EP0468013A1 - Device for issuing web sections. - Google Patents

Device for issuing web sections.

Info

Publication number
EP0468013A1
EP0468013A1 EP91903297A EP91903297A EP0468013A1 EP 0468013 A1 EP0468013 A1 EP 0468013A1 EP 91903297 A EP91903297 A EP 91903297A EP 91903297 A EP91903297 A EP 91903297A EP 0468013 A1 EP0468013 A1 EP 0468013A1
Authority
EP
European Patent Office
Prior art keywords
roller
roll
dispensing
web
button
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91903297A
Other languages
German (de)
French (fr)
Other versions
EP0468013B1 (en
Inventor
Bernhard Wirtz-Odenthal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCOTT-FELDMUEHLE GmbH
Feldmuehle Scott GmbH
Original Assignee
SCOTT-FELDMUEHLE GmbH
Feldmuehle Scott GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SCOTT-FELDMUEHLE GmbH, Feldmuehle Scott GmbH filed Critical SCOTT-FELDMUEHLE GmbH
Publication of EP0468013A1 publication Critical patent/EP0468013A1/en
Application granted granted Critical
Publication of EP0468013B1 publication Critical patent/EP0468013B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means
    • A47K10/36—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices
    • A47K10/3687—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices with one or more reserve rolls
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means
    • A47K10/36—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices
    • A47K10/3631—The cutting devices being driven manually
    • A47K10/3643—The cutting devices being driven manually by pulling the paper
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means
    • A47K10/36—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices
    • A47K10/3631—The cutting devices being driven manually
    • A47K2010/365—Triggering mechanism for the blade
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means
    • A47K10/36—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices
    • A47K2010/3675—Braking devices

Definitions

  • the invention relates to a device for dispensing web sections, in particular paper towels from a dispensing roll with automatic switching of the output to a supply roll when the dispensing roll is exhausted, in which a spring-loaded button in contact with the material web of the dispensing roll detects the presence of the material web of the dispensing roll and in the absence thereof via a lever construction, the end of the material web of the dispensing roller presses against the beginning of the material web of the supply roll and jointly feeds both material webs to a pressure roller and the counter roller which is in engagement with it.
  • Reel sheet dispensers are known in a variety. In addition to the dispensers of wiping or cleaning towels, the dispensers of towels have received the greatest importance, which is why the invention is to be dealt with below using the example of a towel dispenser, but without restricting it to them.
  • Towel dispensers which are equipped with a supply roll and which use the supply roll on the first roll when the paper supply is exhausted are known from US Pat. No. 4,236,679, EP-OS 319 166, EP-OS 235 446 and DE- OS 28 12 756 known. According to US Pat. No. 4,236,679, it is proposed to arrange the material rollers one above the other on articulated suspension levers, as a result of which they are in contact with one another and to support the lower roller on a transport roller. After the lower web roll has been exhausted, the bearing levers swing back and the reserve roll takes the place of the first dispensing roll. However, there is no guarantee that the beginning of the web of the spare roll will also emerge from the bottom of the dispenser.
  • EP-OS 319 166 provides for the delivery of web material by means of a rack-operated sliding surface, around which the material of the first roll is looped and leads to the removal opening.
  • the start of the web of the second roll is placed on the sliding surface and pressed onto the transport roll with a pressure plate.
  • the pressure plate has notches from which the start of the web of the second paper roll is held. If the first paper roll has been unwound, the greater friction of the transport roll increases the frictional resistance between the beginning of the web of the second paper roll and the transport roll, whereby the paper is pulled over the catches and reaches the outlet opening.
  • the friction can fluctuate considerably depending on the type of paper * inserted, it cannot be guaranteed that as long as paper remains on the first roll Output is not already being pulled off the second roll of paper. Two sheets can therefore be output, which means that paper consumption doubles.
  • EP-OS 235 446 shows a changeover mechanism in which a sensor, which is connected to a lever system, scans the diameter of the first roller and, as the diameter decreases, a pressure roller, the transport roller over which the paper is passed, is levered over the lever system , feeds. Below the pressure roller, the beginning of the web of the reserve roller is mounted at a fixed point, which is then pressed onto the transport roller when the first roller has essentially been unwound, as a result of which material can be unwound from the reserve roller. With this construction it is not ensured that the beginning of the web of the reserve roll can be gripped, just as little is it ensured that it is not unintentionally pulled off with the first web.
  • DE-OS 28 12 756 describes a towel dispenser in which the first paper roll is arranged above the spare roll, the web to be pulled off being guided along a spring-loaded sensor between two rollers held at a distance to a transport and counter-pressure roller and from there to the exceptional opening becomes.
  • the web to be dispensed is kept under tension between the first roll and the transport roll, and the beginning of the web of the second paper roll is introduced into the nip.
  • a roller of the rollers forming the nip is on the feeler lever stored.
  • a spring presses the sensor in the direction of the empty winding tube of the first paper roll and thus presses the web end of the first paper roll in the nip against the beginning of the web of the second paper roll, which is thereby also removed can.
  • the disadvantage here is that the pressure in the nip must be relatively high so that the second paper web is taken along. This in turn means that only very tear-resistant paper can be used, since the sensor only keeps the nip open when it is pressed back against the spring force by the first paper web.
  • the nature of the paper changes as a result of moisture from the air humidity, ie it stretches so that the original tension of the web is no longer present, the sensor is pressed by the spring in the direction of the first paper roll, so that the nip is inadvertently reduced and thus start the simultaneous dispensing of paper from the second roll.
  • the object of the present invention is to avoid the disadvantages described above.
  • a button under spring tension with the material web of the dispensing roll detects the presence of the material web of the dispensing roll and detects it Missing over one Lever construction presses the end of the material roll of the dispensing roller against the beginning of the material web of the supply roll and together feeds both material webs to a pressure roller and the counter roller that is engaged with it
  • the button lies on the dispensing roller and unlocks it Via lever, a catch or a projection of a swivel plate
  • the swivel plate carries a bearing and can be moved around a swivel pin by means of a spring
  • the spring rotates the swivel plate with the supply roller resting on the bearing against a toothed roller
  • the toothed roller presses the end of the material web
  • the paper web to be drawn off is guided along the supply roll at a distance from the toothed roll.
  • the supply roll is blocked by a brake in accordance with a preferred embodiment of the invention, and thus unwinding of the paper is reliably prevented. If the dispensing roll has been unwound to a few layers, a lever mechanism releases the locking mechanism of a swivel plate, which carries a bearing of the supply roll, the swivel plate with bearing and storage roll is pressed by spring force against the paper web pulled off the dispensing roll and with it against the sprocket and comes out of the engagement of the brake by this movement.
  • the supply roll By further pulling the paper web off the first roll, i.e. the Dispensing roll, the supply roll, which is no longer blocked, is rotated, ie the beginning of the web of the supply roll is unwound with the paper web of the dispensing roll, fed to the portioning roll via a pressure roll and pulled off by it. Until the paper on the delivery roll is completely used up, two to four web sections are dispensed, which are double-layered, which is necessary for the safety of the functioning of the dispenser.
  • the button is pressed onto the dispensing roller by means of a button spring, the button being expediently connected to a holding rod by means of a hinge pin.
  • the handrail is preferably mounted in a handrail guide and is engaged with a catch of the swivel plate.
  • the spring that presses the button on the dispensing roller is also the actuator for the handrail. H. it pulls the support rod upwards as the diameter of the dispensing roller decreases, so that the end of the support rod approaches the support rod guide and thus releases the catch of the swivel plate.
  • the pivoting of the supply roll can only take place after the release and thus the output of web sections can be switched from the delivery roll to the supply roll.
  • push button / handrail / detent An alternative solution for the combination of push button / handrail / detent provides that the push button consists of a flat profile, which is on the dispenser roll has an overlying slide piece and engages via a pin in a control fork of an L-profile, the L-profile expediently being pivoted about a bearing pin and being able to engage with the projection of the pivot plate.
  • the button scans the roller diameter of the dispensing roller, the slide piece resting on the dispensing roller.
  • the button moves in the direction of the roller center, whereby the pin opposite the slide in the control fork of the L-profile swivels the L-profile, so that the projection of the swivel plate, when the dispensing roller is practically unwound, no longer with the L- Profile related.
  • the supply roll detaches from the pulp and is pressed against the toothed roll, whereby the issuing of web sections from the supply roll is initiated.
  • Fig. 1 shows the perspective view of a
  • FIG. 2 in an enlarged, partial side view from the right two superimposed
  • FIGS. 4 and 5 are identical to the cutting mechanism of the paper web, FIGS. 4 and
  • FIG. 6 shows a side view of the dispenser from the left
  • FIG. 7 shows the front view of the dispenser
  • FIG. 8 shows the side view of the dispenser from the right
  • 9 shows an alternative solution to FIG. 8.
  • a portioning roller (1) which is provided with a friction lining (2), is arranged in the lower region of the sheet dispenser.
  • the end faces of the portioning roller (1) have a spiral guide (3), in each of which a nose (5) of a slide (6) engages.
  • the slider (6) engages with its slot (7) the shaft (8) of the portioning roller (1). If the portioning roller (1) is moved clockwise by pulling the paper web (39), the nose (5) slides in the spiral guide (3) and thereby moves the slide (6).
  • the slider (6) which is knee-shaped in its lower region, has a joint (11) at the end opposite the nose (5), which connects it to the knife (12) and the knife lever (14) attached to the Bearing blocks (81) of the portioning roller (1) are articulated and the recess (65) engages in the bearing blocks (81), connects.
  • the rear of the knife (12), which is designed as a toothed knife blade, projects beyond the joint (11) and has knife bolts (45) there which engage in the forks (9) of the trigger anchor (10).
  • the release anchor (10) which is articulated to the slide (6) via a stud bolt (44), has a stopper surface (17) on the outside of an anchor surface and the inner stopper surface (82) on the inside of the other anchor surface.
  • the stops (18) arranged on their end faces (43) abut against the stopper surfaces (17) Release anchors (10) which interact with both end faces (43).
  • a web length is unwound in this stop position of the portioning roller (1), at the same time the slide (6) has moved into its outermost position, as a result of which the knife (12) has been brought outwards and thus into the region of the paper web (39) drawn off.
  • the knife (12) is now in engagement with the paper web (39), by further pulling the paper web (39) is cut through and releases the web section (50), at the same time the knife is counter to the spring force direction of the knife spring (13) until it stops moved to a backstop (42), whereby the release anchor (10) on the in the fork (9) of the release anchor (10) engaging knife bolt (45) is rotated around the stud bolt (44), so that the stopper surface (17) from Stop (18) lifts off. Da ⁇ Me ⁇ er (12). locked in this position on the backstop (42) and is only retracted by the knife spring (13) when the web section (50) has been severed, that is, no more tension is exerted on the knife (12).
  • a spring-operated feed to be explained later rotates the portioning roller (1) clockwise by a few degrees until the stop (18) lies against the inner stop surface (82) and locks the portioning roller (1) a second time, thereby creating a new piece the paper web (39) is guided out of the dispenser so that it can be gripped by hand.
  • the nose (5) is guided in the spiral guide beyond the shoulder (4) and the knife (12) is released from the stopper (42) by the knife spring (13). So that the nose (5) by the return spring (15), the Legs (16) of the knife lever (14) attacks, returned to their starting position, so that the knife (12) is retracted.
  • the paper web (39) is located on a delivery roller (38) which is arranged in the upper region of the dispenser and rests on bearing stumps (26).
  • the bearing stump (26) consists of a downwardly sloping pipe section and is an integral part of a folding bearing (24) which is pressed by means of a pressure spring (25) through the right or left inner wall (56), (57) of the dispenser and with it Folded in and out via the folding pin (23).
  • the folding pin (23) is received by eye bearings (66) which are arranged on the inner walls (56, 57).
  • the space between the inner walls (56) and (57) corresponds to the width of the discharge roller (38). If the dispensing roller (38) is used, this is done from below, that is, along the slope (47) of the bearing stumps (26), which fold outwards until the winding tube (76) of the dispensing roller (38) is reached, ie to the time when the pressure spring (25) press the bearing stumps (26) into the winding tube (76) of the dispensing roller (38).
  • the diameter of the dispensing roller (38) is limited by a limiter (51) arranged in the rear wall (53) so that only dispensing rollers (38) with a defined maximum diameter can be used.
  • buttons (31) On the delivery roller (38) there is a button (31) which is mounted in a bearing pin (32) and by means of a key spring (33) is held in the support position.
  • a hinge pin (30) connects the handrail (29) to the button (31) and is guided in a handrail guide (49).
  • the lower area engages with the catch (28) of a swivel plate (27), which can be moved around the swivel pin (22) and carries a folding bearing (24).
  • the button (31) By pulling the paper web (39) from the delivery roller (38), its diameter is reduced, so that the button (31) moves continuously downwards and thus the holding rod (29) is pulled up until the delivery roller (38) is almost empty.
  • the holding rod (29) releases the catch (28) and the swivel plate spring (48) moves the swivel plate (27) and thus the folding bearing (24) in the direction of the toothed roller (21).
  • the supply roll (40) rests on both sides in folding bearings (24). However, one of these folding bearings (24) is located on the swivel plate (27), that is to say that the supply roll is offset on one side by the swivel plate spring (27) and pressed against the toothed roll (21) which is mounted in the toothed roller block (46). As a result, the brake (20) is no longer available. the circumference of the supply roll (40) in engagement so that it can rotate freely.
  • the toothed roller (21) presses the paper web (39) coming from the delivery roller (38) against the supply roll (40), so that the beginning of the web (41) unwinds when the paper web (39) is pulled off the supply roll (40) Pressure rollers (19) reached and passed over the portioning roller (1) to the dispensing opening (55) of the dispenser.
  • two paper webs are now simultaneously output, ie when the paper web (39) is torn off via the knife (12), two sheets are also removed. This doubling of the paper web (39) lasts until the dispensing roll is exhausted, ie practically that two to five double sheets are dispensed before the supply roll (40) is unwound exclusively.
  • the lid (54) of the dispenser has a fill level window (35) in this area, through which the scale (52) of the fill level lever (34) can be seen; the fill of the dispenser can thus be seen from the outside.
  • the scale (52) is designed so that a warning occurs when 2/3 of the supply roll has been used up. If the container is refilled in this state, the now partially unwound supply roll (40) is exchanged for the empty winding tube (76) of the dispensing roll (38) and a new supply roll (40) is inserted into the dispenser.
  • the opening mechanism for the supply roll (40) is constructed differently in FIGS. 1 and 9.
  • the dispensing roller is scanned by a sliding piece (69) resting on the dispensing roller (38), which forms an integral part with a flat profile (71), rotatable about the bolt (70) and a pin (72) on the sliding piece (69) opposite end.
  • This pin (72) engages in the control fork (73) of an L-profile (74), which is connected to the right inner wall (57) of the dispenser via a bearing pin (75).
  • the front area of the L-profile (74) has a hook stop (77) which engages behind a projection (78) of the folding bearing (24) arranged on the swivel plate (27).
  • the toothed roller (21) sits on the right side of the cover (54) in a toothed roller block (46), which is an integral part of the cover (54).
  • the lid is mounted in lid bearings (58) which are located in the right and left inner walls (57, 56). In its upper area near the rear wall (53) it has a holding slot (67) into which a resilient hook (68) arranged on the rear wall engages.
  • the portioning roller (1) is arranged on bearing blocks (81) in the lower region of the cover (54), which is folded forward when the lid (54) is folded down, so that the paper web (39) can be passed comfortably between the pressure rollers (19) and the portioning roller (1) when the roll is changed.
  • the shaft (8) of the portioning roller (1) reaches through one of the bearing blocks (81) and carries at its outer end a curve segment (63) which has a transport surface (64).
  • the curve segment (63) engages with the sliding surface (60) of the transport lever (59), which is pressed against the curve segment (63) by the transport spring (61). If the paper web (39) is pulled off and the portioning roller (1) is rotated, the curve segment (63) is rotated at the same time, ie the sliding surface (60), which is in the idle state of the portioning roller (1) on the transport surface (64), slides along the circumference of the curve segment (63), moves the transport lever (59) downward and tensions it.
  • the portioning roller (1) is locked in that the stopper surface (17) of the trigger anchor (10) abuts the stop (18) of the portioning roller (1) .
  • the knife (12) tilts back, so that the lock is released, ie the stop (18) and the stopper surface (17) are no longer in engagement.
  • the sliding surface (60) slides on the transport surface (64), ie the transport spring (61) pulls the transport lever (59) into its rest position and thus moves the portioning roller (1) until the stop (18) with the inner one Stopper surface (82) is engaged so that the knife (12) can slide back into its starting position and a new piece of the paper web (39) is transported to the outside.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Replacement Of Web Rolls (AREA)
  • Unwinding Webs (AREA)
  • Steroid Compounds (AREA)
  • Cephalosporin Compounds (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Dispositif de distribution de morceaux de bande (50) présentant un rouleau de distribution (38) et un rouleau de réserve (40), dans lequel un palpeur (31) placé sur le rouleau de distribution (38) détermine le diamètre de celui-ci et débloque par des leviers un cran (28) ou une partie saillante (78), adjointe à une plaque pivotante (27) supportant le palier (24), provoquant le pivotement de la plaque (27) au moyen d'un ressort (48, 79) et, de ce fait, le rouleau de réserve (40) reposant sur le palier (24) est amené en pression contre la bande de papier (39) tirée par le rouleau de distribution (38) et contre le rouleau denté (21) en même temps que la bande. De cette façon, le dernier reste de papier est tiré du rouleau de distribution (28) en même temps que le début de la bande (41) est tiré du rouleau de réserve (40).Device for dispensing pieces of tape (50) having a dispensing roller (38) and a reserve roller (40), in which a feeler (31) placed on the dispensing roller (38) determines the diameter of the latter and releases by levers a notch (28) or a projecting part (78), associated with a pivoting plate (27) supporting the bearing (24), causing the pivoting of the plate (27) by means of a spring (48 , 79) and, as a result, the reserve roller (40) resting on the bearing (24) is brought into pressure against the paper strip (39) pulled by the dispensing roller (38) and against the toothed roller ( 21) together with the tape. In this way, the last remaining piece of paper is pulled from the dispensing roller (28) at the same time as the start of the strip (41) is pulled from the reserve roller (40).

Description

Vorrichtunq zum Ausgeben von Bahnabschnitten Device for dispensing sections of track
Die Erfindung betrifft eine Vorrichtung zum Ausgeben von Bahnabschnitten, insbesondere von Papierhandtüchern von einer Abgaberolle mit automatischer Umschaltung der Ausgabe auf eine Vorratsrolle bei Erschöpfung der Abgaberolle, bei der ein unter Federspannung mit der Materialbahn der Abgaberolle in Berührung stehender Taster das Vorhandensein der Materialbahn der Abgaberolle erfaßt und bei deren Fehlen über eine Hebelkonstruktion das Ende der Materialbahn der Abgaberolle gegen den Anfang der Materialbahn der Vorratsrolle drückt und gemeinsam beide Materialbahnen einer Andruckrolle und der mit ihr in Eingriff stehenden Gegenrolle zuführt.The invention relates to a device for dispensing web sections, in particular paper towels from a dispensing roll with automatic switching of the output to a supply roll when the dispensing roll is exhausted, in which a spring-loaded button in contact with the material web of the dispensing roll detects the presence of the material web of the dispensing roll and in the absence thereof via a lever construction, the end of the material web of the dispensing roller presses against the beginning of the material web of the supply roll and jointly feeds both material webs to a pressure roller and the counter roller which is in engagement with it.
Blattausgeber von Rolle sind in einer Vielzahl bekannt. Die größte Bedeutung haben neben Ausgebern von Wisch- bzw. Putztüchern die Ausgeber von Handtüchern erhalten, weshalb die Erfindung nachstehend am Beispiel eines Handtuchspenders abgehandelt werden soll, ohne sie jedoch darauf zu beschränke . Handtuchspender, die mit einer Vorratεrolle ausgerüstet sind und bei denen bei Erschöpfung des Papiervorrates auf der ersten Rolle auf die Vorratsrolle zurückgegriffen wird, sind aus der US- PS 4,236,679, der EP-OS 319 166, der EP-OS 235 446 und der DE-OS 28 12 756 bekannt. Gemäß der US-PS 4,236,679 wird vorgeschlagen, die Materialwalzen übereinander an gelenkig aufgehängten Lagerhebeln anzuordnen, wodurch sie miteinander in Berührung stehen und die untere Walze auf einer Transportrolle zu lagern. Nach Erschöpfung der unteren Materialbahnrolle schwingen die Lagerhebel zurück und die Reserverolle rückt an die Stelle der ersten Ausgaberolle. Es ist dabei jedoch nicht sichergestellt, daß der Bahnanfang der Reserverolle auch nach unten aus dem Spender austritt.Reel sheet dispensers are known in a variety. In addition to the dispensers of wiping or cleaning towels, the dispensers of towels have received the greatest importance, which is why the invention is to be dealt with below using the example of a towel dispenser, but without restricting it to them. Towel dispensers which are equipped with a supply roll and which use the supply roll on the first roll when the paper supply is exhausted are known from US Pat. No. 4,236,679, EP-OS 319 166, EP-OS 235 446 and DE- OS 28 12 756 known. According to US Pat. No. 4,236,679, it is proposed to arrange the material rollers one above the other on articulated suspension levers, as a result of which they are in contact with one another and to support the lower roller on a transport roller. After the lower web roll has been exhausted, the bearing levers swing back and the reserve roll takes the place of the first dispensing roll. However, there is no guarantee that the beginning of the web of the spare roll will also emerge from the bottom of the dispenser.
Die EP-OS 319 166 sieht die Ausgabe von Bahnmaterial mittels einer zahnstangenbetätigten Gleitfläche vor, um die das Material der ersten Rolle geschlungen wird und zur Entnahmeöffnung führt. Gleichzeitig wird der Bahnanfang der zweiten Rolle auf die Gleitfläche aufgelegt und mit einer Andruckplatte an die Tranεportrolle angedrückt. Die Andruckplatte weist Rasten auf, von denen der Bahnanfang der zweiten Papierrolle gehalten wird. Ist die erste Papierrolle abgewickelt, erhöht sich aufgrund der größeren Reibung der Transportrolle der Reibungswiderstand zwischen dem Bahnanfang der zweiten Papierrolle und der Transportrol e, wodurch das Papier über die Rasten hinweggezogen wird und zur Austrittsöffnung gelangt . Da jedoch die Reibung je nach eingelegter Papiersorte* erheblich schwanken kann, ist nicht εichergestelli , daß, solange noch auf der ersten Rolle sich Papier zur Ausgabe befindet, nicht auch bereits von der zweiten Rolle Papier mit abgezogen wird . Es kann also durchaus zur Ausgabe von zwei Blättern kommen, d. h., daß sich der Verbrauch an Papier verdoppelt.EP-OS 319 166 provides for the delivery of web material by means of a rack-operated sliding surface, around which the material of the first roll is looped and leads to the removal opening. At the same time, the start of the web of the second roll is placed on the sliding surface and pressed onto the transport roll with a pressure plate. The pressure plate has notches from which the start of the web of the second paper roll is held. If the first paper roll has been unwound, the greater friction of the transport roll increases the frictional resistance between the beginning of the web of the second paper roll and the transport roll, whereby the paper is pulled over the catches and reaches the outlet opening. However, since the friction can fluctuate considerably depending on the type of paper * inserted, it cannot be guaranteed that as long as paper remains on the first roll Output is not already being pulled off the second roll of paper. Two sheets can therefore be output, which means that paper consumption doubles.
Der EP-OS 235 446 ist ein Umschaltmechanismus zu entnehmen, bei dem ein Fühler, der mit einem Hebelsystem in Verbindung steht, den Durchmesser der erεten Rolle abtastet und mit zunehmender Durchmesserverringerung über das Hebelsystem eine Andruckrolle, der Txansportrolle, über die das Papier geleitet wird, zuführt. Unterhalb der Andruckrolle ist in einem fixierten Punkt der Bahnanfang der Reserverolle gelagert, der dann, wenn die erste Rolle im wesentlichen abgewickelt ist, an die Transportrolle angedrückt wird, wodurch Material von der Reserverolle abgewickelt werden kann. Bei dieser Konstruktion ist nicht sichergestellt, daß stetε der Bahnanfang der Reserverolle ergriffen werden kann, ebensowenig iεt εichergeεtellt, daß er nicht unbeabεichtigt mit der erεten Bahn abgezogen wird.EP-OS 235 446 shows a changeover mechanism in which a sensor, which is connected to a lever system, scans the diameter of the first roller and, as the diameter decreases, a pressure roller, the transport roller over which the paper is passed, is levered over the lever system , feeds. Below the pressure roller, the beginning of the web of the reserve roller is mounted at a fixed point, which is then pressed onto the transport roller when the first roller has essentially been unwound, as a result of which material can be unwound from the reserve roller. With this construction it is not ensured that the beginning of the web of the reserve roll can be gripped, just as little is it ensured that it is not unintentionally pulled off with the first web.
Die DE-OS 28 12 756 beschreibt einen Handtuchspender, bei dem die erste Papierrolle über der Reserverolle angeordnet ist, wobei die abzuziehende Bahn an einem federbeaufschlagten Fühler entlang zwischen zwei auf Abstand gehaltenen Walzen hindurch zu einer Transport- und Gegendruckwalze und von dieser zur Ausnahmeöffnung geführt wird. Die auszugebende Bahn wird dabei zwischen der ersten Rolle und der Transportrolle unter Spannung gehalten, in den Walzenspalt der Bahnanfang der zweiten Papierrolle eingeführt. Eine Walze der den Walzenspalt bildenden Walzen ist an dem Fühlerhebel gelagert. Fehlt also die Papierbahn zwischen erster Rolle und Anpreß- bzw. Gleitfläche, so drückt eine Feder den Fühler in Richtung der leeren Wickelhülse der ersten Papierrolle und preßt damit das Bahnende der ersten Papierrolle im Walzenspalt an den Bahnanfang der zweiten Papierrolle, der dadurch mit abgezogen werden kann. Nachteilig dabei ist, daß der Andruck im Walzenspalt relativ hoch sein muß, damit die zweite Papierbahn mitgenommen wird. Das bedingt wiederum, daß nur sehr reißfestes Papier eingesetzt werden kann, da der Fühler den Walzenspalt nur geöffnet hält, wenn er durch die erste Papierbahn entgegen der Federkraft zurückgedrückt wird. Bereits durch Feuchtigkeitseinwirkung aus der Luftfeuchtigkeit ändert sich die Beschaffenheit des Papieres, d. h. es dehnt sich, so daß die ursprünglich vorhandene Spannung der Bahn nicht mehr vorhanden ist, der Fühler von der Feder in Richtung der ersten Papierrolle gedrückt wird, so daß unbeabsichtigt der Walzenspalt verringert und damit die gleichzeitige Ausgabe von Papier von der zweiten Rolle in Gang gesetzt wird.DE-OS 28 12 756 describes a towel dispenser in which the first paper roll is arranged above the spare roll, the web to be pulled off being guided along a spring-loaded sensor between two rollers held at a distance to a transport and counter-pressure roller and from there to the exceptional opening becomes. The web to be dispensed is kept under tension between the first roll and the transport roll, and the beginning of the web of the second paper roll is introduced into the nip. A roller of the rollers forming the nip is on the feeler lever stored. If the paper web between the first roll and the pressing or sliding surface is missing, a spring presses the sensor in the direction of the empty winding tube of the first paper roll and thus presses the web end of the first paper roll in the nip against the beginning of the web of the second paper roll, which is thereby also removed can. The disadvantage here is that the pressure in the nip must be relatively high so that the second paper web is taken along. This in turn means that only very tear-resistant paper can be used, since the sensor only keeps the nip open when it is pressed back against the spring force by the first paper web. The nature of the paper changes as a result of moisture from the air humidity, ie it stretches so that the original tension of the web is no longer present, the sensor is pressed by the spring in the direction of the first paper roll, so that the nip is inadvertently reduced and thus start the simultaneous dispensing of paper from the second roll.
Aufgabe der vorliegenden Erfindung ist, die vorstehend beschriebenen Nachteile zu vermeiden.The object of the present invention is to avoid the disadvantages described above.
Bei einer Vorrichtung zum Ausgeben von Bahnabschnitten, insbesondere Papierhandtüchern von einer Abgaberolle mit automatischer Umschaltung der Ausgabe auf eine Vorratsrolle bei Erschöpfung der Abgaberolle, bei der ein unter Federspannung mit der Materialbahn der Abgaberolle in Berührung stehender Taster das Vorhandensein der Materialbahn der Abgaberolle erfaßt und bei deren Fehlen über eine Hebelkonstruktion das Ende der Materialbahn der Abgaberolle gegen den Anfang der Materialbahn der Vorratsrolle drückt und gemeinsam beide Materialbahnen einer Andruckrolle und der mit ihr in Eingriff stehenden Gegenrolle zuführt, wird diese Aufgabe durch die Kombination folgender Merkmale gelöst: der Taster liegt auf der Abgaberolle auf und entriegelt über Hebel eine Raste bzw. einen Vorsprung einer Schwenkplatte, die Schwenkplatte trägt ein Lager und kann um einen Schwenkbolzen mittels einer Feder bewegt werden, die Feder dreht die Schwenkplatte mit der auf dem Lager ruhenden Vorratsrolle gegen eine Zahnrolle, die Zahnrolle drückt das Ende der Materialbahn der Abgaberolle gegen den Bahnanfang der Vorratsrolle.In a device for dispensing web sections, in particular paper towels from a dispensing roll with automatic changeover of the dispensing to a supply roll when the dispensing roll is exhausted, in which a button under spring tension with the material web of the dispensing roll detects the presence of the material web of the dispensing roll and detects it Missing over one Lever construction presses the end of the material roll of the dispensing roller against the beginning of the material web of the supply roll and together feeds both material webs to a pressure roller and the counter roller that is engaged with it, this task is solved by the combination of the following features: the button lies on the dispensing roller and unlocks it Via lever, a catch or a projection of a swivel plate, the swivel plate carries a bearing and can be moved around a swivel pin by means of a spring, the spring rotates the swivel plate with the supply roller resting on the bearing against a toothed roller, the toothed roller presses the end of the material web the delivery roll against the beginning of the web of the supply roll.
Während des Abwickelvorganges der Papierbahn von der Abgaberolle, die als erste Rolle oberhalb der Vorratsrolle angeordnet ist, wird die abzuziehende Papierbahn an der Vorratsrolle entlang in einem Abstand zur Zahnrolle geführt. Während dieser Zeit ist die Vorratsrolle gemäß einer bevorzugten Ausgestaltung der Erfindung durch eine Bremse blockiert und damit eine Abwicklung des Papieres sicher verhindert. Ist die Abgaberolle bis auf wenige Lagen abgewickelt, so gibt ein Hebelmechanismus die Arretierung einer Schwenkplatte, die ein Lager der Vorratsrolle trägt, frei, die Schwenkplatte mit Lager und Vorratεrolle wird durch Federkraft gegen die von der Abgaberolle abgezogene Papierbahn und mit dieser gegen die Zahnrolle gedrückt und kommt durch diese Bewegung aus dem Eingriff der Bremse heraus. Durch weiteres Abziehen der Papierbahn von der ersten Rolle, also der Abgaberolle, wird die Vorratsrolle, die nun nicht mehr blockiert ist, gedreht, d. h. der Bahnanfang der Vorratsrolle wird mit der Papierbahn der Abgaberolle abgewickelt, über eine Andruckwalze der Portionierwalze zugeführt und von dieser mit abgezogen. Bis zum völligen Aufbrauchen des Papiers auf der Abgaberolle werden zwei bis vier Bahnabschnitte ausgegeben, die doppellagig sind, was zur Sicherheit der Funktionsweise des Spenders erforderlich ist.During the unwinding process of the paper web from the delivery roll, which is arranged as the first roll above the supply roll, the paper web to be drawn off is guided along the supply roll at a distance from the toothed roll. During this time, the supply roll is blocked by a brake in accordance with a preferred embodiment of the invention, and thus unwinding of the paper is reliably prevented. If the dispensing roll has been unwound to a few layers, a lever mechanism releases the locking mechanism of a swivel plate, which carries a bearing of the supply roll, the swivel plate with bearing and storage roll is pressed by spring force against the paper web pulled off the dispensing roll and with it against the sprocket and comes out of the engagement of the brake by this movement. By further pulling the paper web off the first roll, i.e. the Dispensing roll, the supply roll, which is no longer blocked, is rotated, ie the beginning of the web of the supply roll is unwound with the paper web of the dispensing roll, fed to the portioning roll via a pressure roll and pulled off by it. Until the paper on the delivery roll is completely used up, two to four web sections are dispensed, which are double-layered, which is necessary for the safety of the functioning of the dispenser.
Vorteilhafte Ausgestaltungen der Erfindung sehen vor, daß der Taster mittels einer Tasterfeder an die Abgaberolle angedrückt wird, wobei zweckmäßig der Taster über einen Gelenkbolzen mit einer Haltestange verbunden ist. Die Haltestange wird dabei bevorzugt in einer Haltestangenführung gelagert, und ist mit einer Raste der Schwenkplatte im Eingriff.Advantageous embodiments of the invention provide that the button is pressed onto the dispensing roller by means of a button spring, the button being expediently connected to a holding rod by means of a hinge pin. The handrail is preferably mounted in a handrail guide and is engaged with a catch of the swivel plate.
Die Feder, die den Taster auf die Abgaberolle drückt, ist gleichzeitig das Betätigungsorgan für die Haltestange, d. h. sie zieht die Haltestange bei sich verringerndem Durchmesser der Abgaberolle nach oben, so daß sich das Ende der Haltestange der Haltestangenführung nähert und damit die Raste der Schwenkplatte freigibt. Erst nach der Freigabe kann das Verschwenken der Vorratεrolle erfolgen und damit die Ausgabe von Bahnabschnitten von der Abgaberolle auf die Vorratsrolle umgeschaltet werden.The spring that presses the button on the dispensing roller is also the actuator for the handrail. H. it pulls the support rod upwards as the diameter of the dispensing roller decreases, so that the end of the support rod approaches the support rod guide and thus releases the catch of the swivel plate. The pivoting of the supply roll can only take place after the release and thus the output of web sections can be switched from the delivery roll to the supply roll.
Eine alternative Lösung für die Kombination Taster/Haltestange/Raste sieht vor, daß der Taster aus einem Flachprofil besteht, das ein auf der Abgaberolle aufliegendeε Gleitstück aufweist und über einen Zapfen in eine Steuergabel eines L-Profiles eingreift, wobei zweckmäßig das L-Profil um einen Lagerzapfen geschwenkt wird und mit dem Vorsprung der Schwenkplatte im Eingriff stehen kann. Auch bei dieser Konstruktion tastet der Taεter den Rollendurchmesser der Abgaberolle ab, wobei das Gleitstück auf der Abgaberolle aufliegt. Mit abnehmendem Durchmesser der Abgaberolle bewegt sich der Taster in Richtung des Rollenzentrums, wodurch der dem Gleitstück gegenüberliegende Zapfen in der Steuergabel des L-Profils das L-Profil verschwenkt, so daß der Vorsprung der Schwenkplatte bei praktisch abgewickelter Abgaberolle, nicht mehr mit dem L-Profil in Verbindung steht. Daraus ergibt sich dieselbe Lösung, d. h. die Vorratsrolle löst sich von der Bre εe und wird gegen die Zahnrolle gedrückt, wodurch das Auεgeben von Bahnabεchnitten von der Vorratsrolle eingeleitet wird.An alternative solution for the combination of push button / handrail / detent provides that the push button consists of a flat profile, which is on the dispenser roll has an overlying slide piece and engages via a pin in a control fork of an L-profile, the L-profile expediently being pivoted about a bearing pin and being able to engage with the projection of the pivot plate. In this construction too, the button scans the roller diameter of the dispensing roller, the slide piece resting on the dispensing roller. With a decreasing diameter of the dispensing roller, the button moves in the direction of the roller center, whereby the pin opposite the slide in the control fork of the L-profile swivels the L-profile, so that the projection of the swivel plate, when the dispensing roller is practically unwound, no longer with the L- Profile related. This results in the same solution, ie the supply roll detaches from the pulp and is pressed against the toothed roll, whereby the issuing of web sections from the supply roll is initiated.
Die Erfindung wird nachstehend anhand der Zeichnungen beschrieben.The invention is described below with reference to the drawings.
Fig. 1 zeigt die perspektivische Darstellung einesFig. 1 shows the perspective view of a
Handtuchrollenspenders, Fig. 2 in vergrößerter, teilweiser Seitenansicht von rechts zwei übereinander angeordneteTowel roll dispenser, Fig. 2 in an enlarged, partial side view from the right two superimposed
Spenderrollen, Fig. 3 den Abschneidemechaniεmus der Papierbahn, Fig. 4 und3, the cutting mechanism of the paper web, FIGS. 4 and
Fig. 5 im Detail ein 'Klapplage ,5 in detail a 'folding position,
Fig. 6 eine Seitenanεicht des Spenders von links, Fig. 7 die Vorderansicht des Spenders, Fig. 8 die Seitenansicht des Spenders von rechts, Fig. 9 eine alternative Löεung zu Fig. 8.6 shows a side view of the dispenser from the left, FIG. 7 shows the front view of the dispenser, FIG. 8 shows the side view of the dispenser from the right, 9 shows an alternative solution to FIG. 8.
Im unteren Bereich deε Blattausgeberε ist eine Portionierwalze (1) angeordnet, die mit einem Reibbelag (2) versehen ist. Die Stirnflächen der Portionierwalze (1) weisen eine Spiralführung (3) auf, in die je eine Nase (5) eines Schiebers (6) eingreift. Der Schieber (6) umgreift mit seinem Langloch (7) die Welle (8) der Portionierwalze (1). Wird durch Ziehen der Papierbahn (39) die Portionierwalze (1) im Uhrzeigersinn bewegt, so gleitet die Nase (5) in der Spiralführung (3) und bewegt dadurch den Schieber (6) .A portioning roller (1), which is provided with a friction lining (2), is arranged in the lower region of the sheet dispenser. The end faces of the portioning roller (1) have a spiral guide (3), in each of which a nose (5) of a slide (6) engages. The slider (6) engages with its slot (7) the shaft (8) of the portioning roller (1). If the portioning roller (1) is moved clockwise by pulling the paper web (39), the nose (5) slides in the spiral guide (3) and thereby moves the slide (6).
Der Schieber (6), der in seinem unteren Bereich knieförmig ausgestaltet ist, weist an dem der Nase (5) gegenüberliegenden Ende ein Gelenk (11) auf, das ihn mit dem Mesεer (12) und dem Meεεerhebel (14), der an den Lagerböcken (81) der Portionierwalze (1) angelenkt iεt und die Auεnehmung (65) in den Lagerböcken (81) durchgreift, verbindet. Daε Mesεer (12), das alε gezahnteε Messerblatt ausgeführt ist, ragt mit seinem rückwärtigen Bereich über das Ge nk (11) hinaus und weist, dort Messerbolzen (45) auf, die in die Gabeln (9) des Auεlöεeankerε (10) eingreifen.The slider (6), which is knee-shaped in its lower region, has a joint (11) at the end opposite the nose (5), which connects it to the knife (12) and the knife lever (14) attached to the Bearing blocks (81) of the portioning roller (1) are articulated and the recess (65) engages in the bearing blocks (81), connects. The rear of the knife (12), which is designed as a toothed knife blade, projects beyond the joint (11) and has knife bolts (45) there which engage in the forks (9) of the trigger anchor (10).
Der Auslöseanker (10), der über einen Stehbolzen (44) gelenkig mit dem Schieber (6) verbunden ist, weist außen an einer Ankerfläche eine Stopperfläche (17) und innen an der anderen Ankerfläche die innere Stopperfläche (82) auf. Beim Abziehen der Papierbahn (39) über die Portionierwalze (1) wird diese gedreht. Die auf ihren Stirnflächen (43) angeordneten Anschläge (18) stoßen dabei gegen die Stopperflächen (17) der Auslöseanker (10), die mit beiden Stirnflächen (43) zusammenwirken. In dieser Stoppεtellung der Portionierwalze (1) ist eine Bahnlänge abgewickelt, gleichzeitig ist damit der Schieber (6) in seine äußerste Position gefahren, wodurch das Messer (12) nach außen und damit in den Bereich der abgezogenen Papierbahn (39) gebracht wurde. Das Messer (12) steht jetzt mit der Papierbahn (39) im Eingriff, durch weiteres Ziehen wird die Papierbahn (39) durchtrennt und gibt den Bahnabschnitt (50) frei, gleichzeitig wird das Mesεer entgegen der Federkraftrichtung der Messerfeder (13) bis zum Anschlag an eine Rücklaufsperre (42) bewegt, wodurch der Auslöseanker (10) über den in die Gabel (9) des Auslöseankers (10) eingreifenden Messerbolzen (45) um den Stehbolzen (44) gedreht wird, so daß die Stopperfläche (17) sich vom Anεchlag (18) abhebt. Daε Meεεer (12) ist. in dieser Position an der Rücklaufsperre (42) eingerastet und wird erst dann durch die Mesεerfeder (13) zurückgezogen, wenn der Bahnabschnitt (50) abgetrennt ist, also kein Zug mehr auf daε Messer (12) ausgeübt wird. Ein später zu erläuternder, federbetätigter Vorschub dreht die Portionierwalze ( 1 ) um einige Grad im Uhrzeigersinn, bis der Anschlag (18) an der inneren Stopperfläche (82) anliegt und die Portionierwalze (1) zum zweiten Mal arretiert, weiter, wodurch ein neues Stück der Papierbahn (39) aus dem Spender herausgeführt wird, so daß es von Hand ergriffen werden kann. Gleichzeitig mit dieser Drehung wird die Nase (5) in der Spiralführung über den Absatz (4) hinausgeführt und durch die Messerfeder (13) das Messer (12) von dem Stopper (42) gelöst. Damit kann die Nase (5) durch die Rückholfeder (15), die am Schenkel (16) des Messerhebels (14) angreift, in ihre Ausgangsposition zurückgebracht werden, so daß das Messer (12) wieder eingefahren ist.The release anchor (10), which is articulated to the slide (6) via a stud bolt (44), has a stopper surface (17) on the outside of an anchor surface and the inner stopper surface (82) on the inside of the other anchor surface. When the paper web (39) is pulled off over the portioning roller (1), it is rotated. The stops (18) arranged on their end faces (43) abut against the stopper surfaces (17) Release anchors (10) which interact with both end faces (43). A web length is unwound in this stop position of the portioning roller (1), at the same time the slide (6) has moved into its outermost position, as a result of which the knife (12) has been brought outwards and thus into the region of the paper web (39) drawn off. The knife (12) is now in engagement with the paper web (39), by further pulling the paper web (39) is cut through and releases the web section (50), at the same time the knife is counter to the spring force direction of the knife spring (13) until it stops moved to a backstop (42), whereby the release anchor (10) on the in the fork (9) of the release anchor (10) engaging knife bolt (45) is rotated around the stud bolt (44), so that the stopper surface (17) from Stop (18) lifts off. Daε Meεεer (12). locked in this position on the backstop (42) and is only retracted by the knife spring (13) when the web section (50) has been severed, that is, no more tension is exerted on the knife (12). A spring-operated feed to be explained later rotates the portioning roller (1) clockwise by a few degrees until the stop (18) lies against the inner stop surface (82) and locks the portioning roller (1) a second time, thereby creating a new piece the paper web (39) is guided out of the dispenser so that it can be gripped by hand. Simultaneously with this rotation, the nose (5) is guided in the spiral guide beyond the shoulder (4) and the knife (12) is released from the stopper (42) by the knife spring (13). So that the nose (5) by the return spring (15), the Legs (16) of the knife lever (14) attacks, returned to their starting position, so that the knife (12) is retracted.
Die Papierbahn (39) befindet sich auf einer Abgaberolle (38), die im oberen Bereich des Spenders angeordnet ist und auf Lagerstümpfen (26) ruht. Der Lagerstumpf (26) besteht aus einem nach unten abgeschrägten Rohrstück und ist integrales Teil eines Klapplagers (24), das mittels einer Andruckfeder (25) durch die rechte bzw. linke Innenwand (56), (57) des Spenderε gedrückt wird und mit dieεer über den Klappbolzen (23) ein- und auεklappbar verbunden iεt. Der Klappbolzen (23) wird von Augenlagern (66) aufgenommen, die an den Innenwänden (56, 57) angeordnet sind.The paper web (39) is located on a delivery roller (38) which is arranged in the upper region of the dispenser and rests on bearing stumps (26). The bearing stump (26) consists of a downwardly sloping pipe section and is an integral part of a folding bearing (24) which is pressed by means of a pressure spring (25) through the right or left inner wall (56), (57) of the dispenser and with it Folded in and out via the folding pin (23). The folding pin (23) is received by eye bearings (66) which are arranged on the inner walls (56, 57).
Der Zwischenraum zwischen den Innenwänden (56) und (57) entspricht der Breite der Abgaberolle (38). Wird die Abgaberolle (38) eingesetzt, so erfolgt dies von unten, also entlang der Schräge (47) der Lagerstümpfe (26), die dabei nach außen klappen, bis die Wickelhülse (76) der Abgaberolle (38) erreicht ist, also biε zu dem Zeitpunkt, wo die Andruckfeder (25) die Lagerstümpfe (26) in die Wickelhülse (76) der Abgaberolle (38) eindrücken. Der Durchmesser der Abgaberolle (38) wird durch einen in der Rückwand (53) angeordneten Begrenzer (51) so beschränkt, daß nur Abgaberollen (38) mit einem definierten Maximaldurchmesεer eingesetzt werden können.The space between the inner walls (56) and (57) corresponds to the width of the discharge roller (38). If the dispensing roller (38) is used, this is done from below, that is, along the slope (47) of the bearing stumps (26), which fold outwards until the winding tube (76) of the dispensing roller (38) is reached, ie to the time when the pressure spring (25) press the bearing stumps (26) into the winding tube (76) of the dispensing roller (38). The diameter of the dispensing roller (38) is limited by a limiter (51) arranged in the rear wall (53) so that only dispensing rollers (38) with a defined maximum diameter can be used.
Auf der Abgaberolle (38) liegt ein Taεter (31) auf, der in einem Lagerbolzen (32) gelagert und mittels einer Tasterfeder (33) in Auflageposition gehalten wird. Ein Gelenkbolzen (30) verbindet die Haltestange (29) mit dem Taster (31) und wird in einer Haltestangenführung (49) geführt. Der untere Bereich steht mit der Raste (28) einer Schwenkplatte (27) im Eingriff, die um den Schwenkbolzen (22) bewegt werden kann und ein Klapplager (24) trägt. Durch Abziehen der Papierbahn (39) von der Abgaberolle (38) verringert sich deren Durchmesser, so daß sich der Taster (31) kontinuierlich nach unten bewegt und damit die Haltestange (29) nach oben gezogen wird, bis bei fast leerer Abgaberolle (38) die Haltestange (29) die Raste (28) freigibt und die Schwenkplattenfeder (48) die Schwenkplatte (27) und damit daε Klapplager (24) in Richtung der Zahnrolle (21) bewegt.On the delivery roller (38) there is a button (31) which is mounted in a bearing pin (32) and by means of a key spring (33) is held in the support position. A hinge pin (30) connects the handrail (29) to the button (31) and is guided in a handrail guide (49). The lower area engages with the catch (28) of a swivel plate (27), which can be moved around the swivel pin (22) and carries a folding bearing (24). By pulling the paper web (39) from the delivery roller (38), its diameter is reduced, so that the button (31) moves continuously downwards and thus the holding rod (29) is pulled up until the delivery roller (38) is almost empty. the holding rod (29) releases the catch (28) and the swivel plate spring (48) moves the swivel plate (27) and thus the folding bearing (24) in the direction of the toothed roller (21).
Die Vorratsrolle (40) ruht beidseitig in Klapplagern (24) . Eines dieser Klapplager (24) befindet sich jedoch auf der Schwenkplatte (27), d.h. daß die Vorratsrolle einseitig versetzt durch die Schwenkplattenfeder (27) an die Zahnrolle (21), die im Zahnrollenbock (46) gelagert ist, gedrückt wird. Die Bremse (20) steht dadurch nicht mehr mit. dem Umfang der Vorratsrolle (40) in Eingriff, so daß diese sich frei drehen kann. Die Zahnrolle (21) drückt die von der Abgaberolle (38) kommende Papierbahn (39) gegen die Vorratsrolle (40), so daß sich deren Bahnanfang (41) beim Abzug der Papierbahn (39) von der Vorratεrolle (40) mit abwickelt, die Andruckrollen (19) erreicht, und über die Portionierwalze (1) geführt, zur Auεgabeöffnung (55) deε Spenderε gelangt. Biε zur Erεchöpfung der Abgaberolle (38) werden jetzt gleichzeitig zwei Papierbahnen auεgegeben, d.h. beim Abreißen der Papierbahn (39) über daε Messer (12) werden auch zwei Blatt entnommen. Diese Doublierung der Papierbahn (39) dauert, bis zur Erschöpfung der Abgaberolle, d.h. praktisch, daß zwei bis fünf Doppelblätter ausgegeben werden, ehe ausschließlich von der Vorratsrolle (40) abgewickelt wird.The supply roll (40) rests on both sides in folding bearings (24). However, one of these folding bearings (24) is located on the swivel plate (27), that is to say that the supply roll is offset on one side by the swivel plate spring (27) and pressed against the toothed roll (21) which is mounted in the toothed roller block (46). As a result, the brake (20) is no longer available. the circumference of the supply roll (40) in engagement so that it can rotate freely. The toothed roller (21) presses the paper web (39) coming from the delivery roller (38) against the supply roll (40), so that the beginning of the web (41) unwinds when the paper web (39) is pulled off the supply roll (40) Pressure rollers (19) reached and passed over the portioning roller (1) to the dispensing opening (55) of the dispenser. In order to exhaust the delivery roll (38), two paper webs are now simultaneously output, ie when the paper web (39) is torn off via the knife (12), two sheets are also removed. This doubling of the paper web (39) lasts until the dispensing roll is exhausted, ie practically that two to five double sheets are dispensed before the supply roll (40) is unwound exclusively.
Auf der Vorratsrolle (40) liegt mit einem Füllstandsfühler (37) der Füllstandshebel (34) auf, der durch die Füllstandsfeder (36) in dieser Position gehalten wird. Der Deckel (54) des Spenders besitzt in diesem Bereich ein Füllstandsfenster (35), durch das die Skala (52) des Füllstandεhebelε (34) εichtbar iεt, die Füllung des Spenders ist damit von außen εichtbar . Die Skala (52) ist dabei so ausgelegt, daß bereits eine Warnung auftritt, wenn 2/3 der Vorratsrolle verbraucht sind. Erfolgt in diesem Zustand ein Nachfüllen des Behälters, so wird die jetzt teilweise abgewickelte Vorratsrolle (40) gegen die leere Wickelhülse (76) der Abgaberolle (38) getauscht und eine neue Vorratsrolle (40) in den Spender eingesetzt.The fill level lever (34), which is held in this position by the fill level spring (36), lies on the supply roll (40) with a fill level sensor (37). The lid (54) of the dispenser has a fill level window (35) in this area, through which the scale (52) of the fill level lever (34) can be seen; the fill of the dispenser can thus be seen from the outside. The scale (52) is designed so that a warning occurs when 2/3 of the supply roll has been used up. If the container is refilled in this state, the now partially unwound supply roll (40) is exchanged for the empty winding tube (76) of the dispensing roll (38) and a new supply roll (40) is inserted into the dispenser.
Abweichend von den Figuren 2 bis 8 iεt in Figur 1 und 9 der Auε öse echanismuε für die Vorratsrolle (40) anders aufgebaut. Die Abtastung der Abgaberolle erfolgt dabei durch ein auf der Abgaberolle (38) aufliegendes Gleitεtück (69), daε mit einem Flachprofil (71) ein intergraleε Teil bildet, um den Bolzen (70) drehbar iεt und einen Zapfen (72) an dem dem Gleitstück (69) gegenüberliegenden Ende aufweist. Dieεer Zapfen (72) greift in die Steuergabel (73) eineε L-Profileε (74) ein, daε über einen Lagerzapfen (75) mit der rechten Innenwand (57) des Spenders verbunden iεt. Der vordere Bereich des L-Profiles (74) weist einen Hakenanschlag (77) auf, der hinter einen Vorsprung (78) des auf der Schwenkplatte (27) angeordneten Klapplagers (24) einrastet.Deviating from FIGS. 2 to 8, the opening mechanism for the supply roll (40) is constructed differently in FIGS. 1 and 9. The dispensing roller is scanned by a sliding piece (69) resting on the dispensing roller (38), which forms an integral part with a flat profile (71), rotatable about the bolt (70) and a pin (72) on the sliding piece (69) opposite end. This pin (72) engages in the control fork (73) of an L-profile (74), which is connected to the right inner wall (57) of the dispenser via a bearing pin (75). The front area of the L-profile (74) has a hook stop (77) which engages behind a projection (78) of the folding bearing (24) arranged on the swivel plate (27).
Mit dem Abwickeln der Papierbahn (39) von der Abgaberolle (38) verringert sich deren Durchmesser, so daß das Gleitstück (69) sich in Richtung der Wickelhülse (76) bewegt. Dadurch dreht sich daε Flachprofil (71) mit dem Zapfen (72), der die Steuergabel (73) in Richtung der Rückwand (53) des Spenders bewegt und dadurch das L-Profil (74) so dreht, daß der Hakenanschlag (77) über den Vorsprung (78) gehoben wird. Die Zugfeder (79) verbindet einen Punkt der rechten Innenwand (57) mit dem Ausleger (80) der Schwenkplatte (27), bzw. des Klapplagers (24) und zieht dadurch die Vorratsrolle (40) an die Zahnrolle (21) .When the paper web (39) is unwound from the dispensing roller (38), its diameter decreases, so that the slide (69) moves in the direction of the winding tube (76). As a result, the flat profile (71) rotates with the pin (72), which moves the control fork (73) in the direction of the rear wall (53) of the dispenser and thereby rotates the L-profile (74) so that the hook stop (77) over the projection (78) is raised. The tension spring (79) connects a point of the right inner wall (57) to the extension arm (80) of the swivel plate (27) or the folding bearing (24) and thereby pulls the supply roll (40) onto the toothed roll (21).
Die Zahnrolle (21) sitzt auf der rechten Seite des Deckels (54) in einem Zahnrollenbock (46), der ein integrales Teil des Deckels (54) ist. Der Deckel ist in Deckellagern (58), die sich in der rechten bzw. linken Innenwand (57, 56) befinden, gelagert. Er weist in seinem oberen Bereich in der Nähe der Rückwand (53) einen Halteschlitz (67) auf, in den ein an der Rückwand angeordneter federnder Haken (68) eingreift.The toothed roller (21) sits on the right side of the cover (54) in a toothed roller block (46), which is an integral part of the cover (54). The lid is mounted in lid bearings (58) which are located in the right and left inner walls (57, 56). In its upper area near the rear wall (53) it has a holding slot (67) into which a resilient hook (68) arranged on the rear wall engages.
Im unteren Bereich des Deckels (54) ist auf Lagerböcken (81) die Portionierwalze (1) angeordnet, die beim Abklappen des Deckelε (54) dadurch nach vorne geklappt wird, εo daß die Papierbahn (39) beim Rollenwechsel bequem zwiεchen den Andruckrollen (19) und der Portionierwalze (1) hindurchgeführt werden kann.The portioning roller (1) is arranged on bearing blocks (81) in the lower region of the cover (54), which is folded forward when the lid (54) is folded down, so that the paper web (39) can be passed comfortably between the pressure rollers (19) and the portioning roller (1) when the roll is changed.
Die Welle (8) der Portionierwalze (1) greift durch einen der Lagerböcke (81) hindurch und trägt an ihrem äußeren Ende ein Kurvenεegment (63), das eine Transportfläche (64) aufweist. Das Kurvensegment (63) steht mit der Gleitfläche (60) des Transporthebelε (59) in Eingriff, der durch die Tranεportfeder (61) an daε Kurvenεegment (63) gedrückt wird. Wird die Papierbahn (39) abgezogen und damit die Portionierwalze (1) gedreht, so wird gleichzeitig daε Kurvensegment (63) gedreht, d. h. die Gleitfläche (60), die sich im Ruhezustand der Portionierwalze (1) auf der Transportfläche (64) befindet, gleitet am Umfang des Kurvensegments (63) entlang, bewegt den Transporthebel (59) nach unten und εpannt dabei die. Transportfeder (61). In dem Moment, in dem die größte Spannung der Transportfeder (61) erreicht ist, erfolgt die Arretierung der Portionierwalze (1) dadurch, daß die Stopperfläche (17) des Auslöεeankerε (10) an den Anεchlag (18) der Portionierwalze (1) stößt. Nach dem Abreißen der Papierbahn (39) kippt das Messer (12) zurück, damit wird die Sperre gelöst, d. h. der Anschlag (18) und die Stopperfläche (17) stehen nicht mehr im Eingriff. Dadurch gleitet die Gleitfläche (60) auf der Transportfläche (64) ab, d. h. die Transportfeder (61) zieht den Transporthebel (59) in seine Ruhelage und bewegt damit die Portionierwalze (1), bis der Anschlag (18) mit der inneren Stopperflache (82) in Eingriff steht, so daß das Messer (12) in seine Ausgangsstellung zurückgleiten kann und ein neues Stück der Papierbahn (39) nach außen transportiert wird. The shaft (8) of the portioning roller (1) reaches through one of the bearing blocks (81) and carries at its outer end a curve segment (63) which has a transport surface (64). The curve segment (63) engages with the sliding surface (60) of the transport lever (59), which is pressed against the curve segment (63) by the transport spring (61). If the paper web (39) is pulled off and the portioning roller (1) is rotated, the curve segment (63) is rotated at the same time, ie the sliding surface (60), which is in the idle state of the portioning roller (1) on the transport surface (64), slides along the circumference of the curve segment (63), moves the transport lever (59) downward and tensions it. Transport spring (61). The moment the maximum tension of the transport spring (61) is reached, the portioning roller (1) is locked in that the stopper surface (17) of the trigger anchor (10) abuts the stop (18) of the portioning roller (1) . After tearing off the paper web (39), the knife (12) tilts back, so that the lock is released, ie the stop (18) and the stopper surface (17) are no longer in engagement. As a result, the sliding surface (60) slides on the transport surface (64), ie the transport spring (61) pulls the transport lever (59) into its rest position and thus moves the portioning roller (1) until the stop (18) with the inner one Stopper surface (82) is engaged so that the knife (12) can slide back into its starting position and a new piece of the paper web (39) is transported to the outside.

Claims

A \-Patentansprüche A \ patent claims
1. Vorrichtung zum Ausgeben von Bahnabschnitten, insbesondere Papierhandtüchern von einer Abgaberolle mit automatischer Umschaltung der Ausgabe auf eine Vorratsrolle bei Erschöpfung der Abgaberolle., bei der ein unter Federspannung mit der Materialbahn der Abgaberolle in Berührung stehender Taster das Vorhandensein der Materialbahn der Abgaberolle erfaßt und bei deren Fehlen über eine Hebelkonstruktion daε Ende der Materialbahn der Abgaberolle gegen den Anfang der Materialbahn der Vorratsrolle drückt und gemeinsam beide Materialbahnen einer Andruckrolle und der mit ihr in Eingriff stehenden Gegenrolle zuführt, gekennzeichnet durch die Kombination folgender Merkmale: der Taster (31) liegt auf der Abgaberolle (38) auf und entriegelt über Hebel eine Raste (28) bzw. einen Vorsprung (78) einer Schwenkplatte ( 21 ) , die Schwenkplatte (27) trägt ein Lager (24) und kann um einen Schwenkbolzen (22) mittels*, einer Feder (48, 79) bewegt werden, die Feder (48, 79) dreht die Schwenkplatte ( ?1 . mit der auf dem Lager (24) ruhenden Vorratsroll (40) gegen eine Zahnrolle (21). Λ -Y1.Device for dispensing web sections, in particular paper towels from a dispensing roll with automatic switching of the dispensing to a supply roll when the dispensing roll is exhausted, in which a spring-loaded button in contact with the material web of the dispensing roll detects and detects the presence of the material web of the dispensing roll the lack of this via a lever construction presses the end of the material web of the dispensing roller against the beginning of the material web of the supply roll and together feeds both material webs to a pressure roller and the counter roller in engagement with it, characterized by the combination of the following features: the button (31) lies on the Dispensing roller (38) and unlocks a catch (28) or a projection (78) of a swivel plate (21) via lever, the swivel plate (27) carries a bearing (24) and can be swiveled around a swivel pin (22) by means of * , one Spring (48, 79) are moved, the spring (48, 79) rotates the swivel plate atte (? 1. with the supply roll (40) resting on the bearing (24) against a toothed roll (21). Λ -Y
Die Zahnrolle (21) drückt das Ende der Materialbahn (39) der Abgaberolle (38) gegen den Bahnanfang (41) der Vorratsrolle (40) .The toothed roller (21) presses the end of the material web (39) of the delivery roller (38) against the beginning of the web (41) of the supply roller (40).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Taster (31) mittels einer Tasterfeder (33) an die Abgaberolle (38) angedrückt wird.2. Device according to claim 1, characterized in that the button (31) by means of a button spring (33) is pressed onto the dispensing roller (38).
3. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Taster (31) über einen Gelenkbolzen (30) mit einer Haltestange (29) verbunden ist.3. Device according to one of claims 1 and 2, characterized in that the button (31) via a hinge pin (30) is connected to a holding rod (29).
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Haltestange (29) in einer Haltestangenführung (49) gelagert ist und mi't einer Raste (28) der Schwenkplatte (27) in Eingriff steht.4. Device according to one of claims 1 to 3, characterized in that the support rod (29) is mounted in a support rod guide (49) and with a detent (28) of the pivot plate (27) is engaged.
5. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Taster (31) auε einem Flachprofil (71) beεteht, das ein auf der Abgaberolle aufliegendeε Gleitstück (69) aufweist und über einen Zapfen (72) in eine Steuergabel (73) eines L-Profiles (74) eingreift.5. Device according to one of claims 1 and 2, characterized in that the button (31) consists of a flat profile (71) which has a slide piece (69) lying on the dispensing roller and via a pin (72) in a control fork ( 73) of an L-profile (74) engages.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das L-Profil (74) um einen Lagerzapfen (75) geschwenkt wird und mit dem Vorsprung (78) der Schwenkplatte (27) in Eingriff stehen kann. A6. The device according to claim 5, characterized in that the L-profile (74) is pivoted about a bearing pin (75) and with the projection (78) of the pivot plate (27) can be engaged. A
Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Vorratsrolle (40) während der Ausgabe von Bahnabschnitten (50) von der Abgaberolle (38) mit einer Bremse (20) in Eingriff steht. Device according to one of claims 1 to 6, characterized in that the supply roll (40) is in engagement with a brake (20) during the delivery of web sections (50) from the delivery roll (38).
EP91903297A 1990-02-10 1991-02-08 Device for issuing web sections Expired - Lifetime EP0468013B1 (en)

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DE4004122A DE4004122A1 (en) 1990-02-10 1990-02-10 DEVICE FOR DISPENSING TRACK SECTIONS
DE4004122 1990-02-10

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AT (1) ATE91863T1 (en)
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DE2623120C2 (en) * 1975-11-19 1985-12-19 Maurice Saint-Etienne Loire Granger Device for simultaneous cutting and dispensing of strips of rolled up materials
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US4552315A (en) * 1983-01-13 1985-11-12 Maurice Granger Rolled web dispenser
FR2587013B2 (en) * 1985-06-20 1987-12-31 Granger Maurice SIMPLIFIED APPARATUS FOR DISTRIBUTING AND SIMULTANEOUSLY CUTTING TAPES OF WOUND MATERIALS, WITH AUTOMATIC CHANGING OF THE ROLL IN SERVICE
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Title
See references of WO9111946A1 *

Also Published As

Publication number Publication date
DK0468013T3 (en) 1993-08-30
DE4004122A1 (en) 1991-08-14
US5244161A (en) 1993-09-14
NO913969L (en) 1991-10-10
WO1991011946A1 (en) 1991-08-22
NO913969D0 (en) 1991-10-10
EP0468013B1 (en) 1993-07-28
ATE91863T1 (en) 1993-08-15
ES2043469T3 (en) 1993-12-16
DE59100225D1 (en) 1993-09-02

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