EP0448943B1 - Greiferstange zum Greifen von plattenförmigen Gegenständen in einer Maschine zum Herstellen von Verpackungen - Google Patents

Greiferstange zum Greifen von plattenförmigen Gegenständen in einer Maschine zum Herstellen von Verpackungen Download PDF

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Publication number
EP0448943B1
EP0448943B1 EP91101856A EP91101856A EP0448943B1 EP 0448943 B1 EP0448943 B1 EP 0448943B1 EP 91101856 A EP91101856 A EP 91101856A EP 91101856 A EP91101856 A EP 91101856A EP 0448943 B1 EP0448943 B1 EP 0448943B1
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EP
European Patent Office
Prior art keywords
bar
gripper
opening
counter
resilient plate
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.)
Expired - Lifetime
Application number
EP91101856A
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English (en)
French (fr)
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EP0448943A2 (de
EP0448943A3 (en
Inventor
Marcel Yerly
Mauro Chiari
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Bobst Mex SA
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Bobst SA
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Publication date
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Publication of EP0448943A2 publication Critical patent/EP0448943A2/de
Publication of EP0448943A3 publication Critical patent/EP0448943A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/085—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers by combinations of endless conveyors and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/42—Die-cutting

Definitions

  • the present invention relates to gripper bars which, in a machine for working plate elements for the production of packaging, make it possible to pull and position these elements through successive stations for printing, cutting, embossing, upsetting and / or ejecting waste.
  • Such bars are generally attached, at regular intervals and transversely to the direction of travel of the plate elements, to two trains of lateral chains. Inside the machine, these chains run these bars through a circuit composed, first of all, of successive movements of horizontal translation through the various workstations, then, at the end of the machine, of a directed circular movement upwards in the direction of an upper corridor back to the first station, and finally, in a circular movement downwards in the direction of the starting point, that is to say at the level of the front jogging stops d 'a margin table. There, the clamps are opened by a control device which may, depending on the machine, be an integral part or not of the clamp bar.
  • the mechanism opening of the clamps is operated in the opposite direction, so that the new plate element is gripped by the clamp bar to be taken, during the first translation, in the first work station. Since at each workstation, the plate elements must be stopped in order to be able to execute the corresponding cutting, ejection, etc. operation, these elements must be transferred from a station to the 'other according to successive translations composed of acceleration, deceleration and stop.
  • clamp bars must also be sufficiently rigid so as not to deform when the axis of opening of the clamps, an axis which may or may not be an integral part of the bar, is rotated against the action of the numerous springs ensuring the closing of the clips.
  • the rear springs ensuring their closure can only be short and strong to ensure sufficient grip of the plate element. Consequently, the opening torque to be applied to the axis actuating the upper support fingers is high.
  • the clamps are integral with the opening axis, it can only be made of steel and highly dimensioned.
  • the bar is currently made from a more or less rectangular tube and appreciable section. Likewise, the attachments of these bars to the chain trains must be of sufficient size. Such a clamp bar is described, for example, in patent FR-A 1178295.
  • GB-A 791 559 which corresponds to the preamble of claim 1, also describes a device using clamps integral with transverse clamp bars connecting chains of chains arranged in the vicinity of the lateral frames of the machine.
  • the opening of the clamps is carried out by means of a member acting, using a pusher and a lever, on the upper blade of each of the clamps.
  • Such bars also have the disadvantage of acting, by their weight, on the production rate of the machine.
  • the mobile assembly comprising the clamp bars, their associated fasteners and the two trains of lateral chains to which they are attached, constitutes a mass with a great moment of inertia whose possible accelerations are limited by the resistance capacity gripper rod drive members to the stresses resulting from this acceleration, as well as by the power of the main engine.
  • the height of these bars defines the minimum vertical displacement that the lower movable plate must make during the transfer of the plate elements by these bars from one work station to another.
  • the movable stage make the shortest possible displacement.
  • the height of the clamp bars should be minimized, for example, to about the height of the chain trains.
  • the clamps are currently made entirely of metal, the clicking caused by their opening and closing creates a significant noise which must be tried to eliminate.
  • such bars are generally connected at their two ends to the two trains of lateral chains by means of two so-called "floating" attachment devices so that, on the margin table, the plate element can be exactly positioned and oriented relative to the direction of travel and the workstation.
  • Such “floating” devices generally comprise a connecting element engaged with one end of the clamp bar and elastically connected to the corresponding side chain train.
  • this connection is thus designed that, to free the end of the bar from the corresponding connection element, each chain of chains must be separated transversely.
  • These “floating” attachment devices of the prior art therefore have the drawback of requiring disassembly of the chains of trains with respect to the machine in the case, for example, where a clamp bar should be replaced.
  • these fastening devices are generally heavy, difficult to execute and therefore expensive.
  • the "floating" attachment device comprises a connecting piece connected to the bar and to a special chain train link.
  • the connecting piece is provided with two arms engaged respectively with the outside of the lower and upper walls of the bar, and two male and female knuckles located one towards the upstream edge and the other towards the downstream edge of the closed off.
  • the special link has a male knuckle.
  • the male and female knuckles are connected to each other by means of two rods which pass through them by corresponding bores, the male knuckle being mounted on the rods so as to allow a slight movement with elastic take-up in the running direction of the trains of chains. It should be noted that, in this attachment device, the height of the two arms is added to that of the bar.
  • the object of the present invention is to produce a clamp bar whose weight and height dimension are reduced to a minimum, but whose rigidity and gripping force are sufficient to withstand the stresses and forces involved during the operation of the machine. .
  • the clamp bar must also be provided a device for attaching to the chain trains which is simple and light, while allowing easy assembly and disassembly of the bar relative to the two side chain trains.
  • the associated device for opening the clamps must also be lighter and require a lower opening control effort while ensuring maximum simultaneous opening of all the clamps.
  • such a clamp bar must allow a reduction in the cost of manufacture and maintenance, as well as a significant reduction in the noise level generated by it in the various workstations.
  • FIG. 1 represents an embodiment of a clamp bar according to the prior art, comprising a hollow hexagonal profile 1, two elastic blades 2, 3, one of which 2 serves as a clamp and the other 3 of counter clamp, located outside and above the upper wall of the hollow profile 1 at the downstream edge of which (with reference to the movement of the plate element) they are fixed by means of screws 9 and nut 10.
  • Au upstream edge of the profile is fixed, using a screw 7, an extension bracket 4 on which the free ends of the clamp 2 and the counter-clamp 3 come to bear.
  • the clamp 2 is provided with a stud 14 extending through an opening 5 made in the bracket 4.
  • a control member 6, in contact with the stud 14, is provided to open the clamp 2.
  • the clamp bar essentially consists of a bar 100 proper, clamps each comprising an upper finger 110 and a counter clamp 125, of an opening axis of clamps 140 and two fastening devices 165, 169 situated at each end of the bar 100 to connect the latter to the side chain trains (not shown).
  • the bar 100 is produced from a hollow aluminum, magnesium or composite material. Seen in cross section, the advantage of this bar 100 is trapezoidal with an upper wall 100a, a lower wall 100b and two upstream side edges 100c and downstream 100d converging at 45 ° upwards.
  • the thickness of this bar 100 is approximately 3 mm, except for two inwardly oriented thicknesses, one on the bottom wall 100b close to the center line, the other in the bottom corner of the upstream edge 100c. These extra thicknesses will be used thereafter to accommodate element fixing screws.
  • This profile also has a short horizontal extension 100e extending the bottom wall 100b on the upstream side. In other words, this horizontal extension 100e constitutes a tongue extending over the entire length of the bar 100.
  • the upstream edge 100c of the bar 100 is pierced, at regular intervals, with windows 112, and the end downstream of the bottom wall 100b is pierced with circular access orifices 116 in correspondence with the windows 112.
  • each of these windows 112 are fixed counter-clamps 125 by means of screws 129 passing through the through orifices 128 of the counter-clamp 125 and threads made in the extra thickness appearing at the upstream lower corner 100c.
  • Each counter clamp 125 in the form of a plate, is composed of two wings inclined relative to one another.
  • a first wing extends horizontally upstream by resting on the upper face of the longitudinal tongue 100e.
  • the other wing inclined at 45 ° relative to the horizontal, comes to rest against the outside face of the upstream edge 100c.
  • the particular fork shape of these counter-clamps 125 is produced by stamping or by molding. This shape is such that, once in place, each counter-clamp 125 is thus supported by the longitudinal tongue 100e.
  • the horizontal flat spout of these counter-clamps 125 has a width of about 20 mm and its extreme edge is covered by a strip of vulcanized or glued elastomer 127.
  • the active surface 127 of the counter-clamp 125 is located in the horizontal extension of the lower wall 100b of the bar 100.
  • Each clamp is a steel leaf spring 110, the length, width and thickness of which are approximately 120 mm, 20 mm and 1.2 mm respectively.
  • This same blade 110 is curved at about 60 ° at its first end 110a called the attachment.
  • the blade 110 is bent at 30 ° approximately, then straightened horizontally to be bent again at its end 126 roughly perpendicular to the active surface 127 of the counter-clamp 125.
  • This leaf spring 110 is fixed at its attachment end 110a, slightly bent towards the bottom, on the internal face of the downstream edge 100d of the bar 100 by means of a screw 115 and a nut 120 internal to the bar 100, the latter fixing elements being placed through circular access orifices 116.
  • the leaf spring 110 passes through the entire interior of the profiled bar 100 in order to emerge from the window 112 and to bear at its support end 126 on the active surface 127 of the counter-clamp 125.
  • the end of support 126 of the leaf spring 110 is rectified to reveal a succession of teeth 126.
  • the teeth 126 press with a certain force on the active surface 127 of the counter clamp 125 l hen the screw 115 and nut 120 assembly is tightened to fix the leaf spring 110 in place. It turns out here that the assembly formed by the teeth 126 and the elastomer layer 127 greatly increases the gripping force of the plate element by the clamp bar.
  • the clamp bar 100 is provided with a device for simultaneously opening all the clamps.
  • This opening device comprises an opening axis 140 extending along the axis of the bar 100 and maintained above the internal face of the lower wall 100b of the bar 100 by bearings 142. View in cross section , this opening axis 140 is located about a quarter of the bottom wall 100b of the bar 100 on the upstream side.
  • this opening axis 140 is a hollow tube with thin walls of anodized aluminum and of diameter equal to approximately 10 mm.
  • the bearings 142 are made from synthetic resin and held in place by screws 146, the head of which penetrates into a housing specially drilled in the excess thickness of the bottom wall 100b.
  • this opening axis 140 passes under each leaf spring 110.
  • a cam 144 is attached by gluing or pinning on the upstream side of the opening axis 140, and this, under each leaf spring 110 respectively.
  • These cams 144 have a length substantially equal to the width of the spring blades 110, ie 20 mm, and a generally square cross section with rounded edges except the left side which, as seen in FIG. 3, has a concave circular line corresponding to the perimeter of the opening axis 140. Since the contact surface between the cam 144 and the opening axis 140 is large, the cam 144 can be simply attached to this axis 140 by gluing or pinning.
  • the length, shape and arrangement of the cam 144 relative to the blade 110 are chosen so as to minimize the torque throughout the opening of the clamp. This limitation is obtained, as can be seen in FIG. 3, by the fact that, during the rotation of the cam 144, the length L1 of the lever arm of the flexible opening gradually decreases to compensate for the increase in the force of blade reaction 110.
  • the opening axis 140 emerges from the hollow bar 100.
  • a lever 147 At each end of the axis 140 is mounted a lever 147.
  • means raise the upstream end of the levers 147 to turn the axis 140 anti-clockwise by an angle equal to about 33 °, so to cause the lifting end of the spring blades 110 to be lifted to a height of 6 mm by the respective underlying cams 144.
  • This lifting of the spring blades 110 by the cams 144 over such a height is sufficient for the insertion of elements in standard plate in the clamps. Consequently, the limitation of the opening torque of the clamps described above makes it possible to reduce the dimensions of the opening axis 140.
  • cams 144 are not attached along the upstream side of the axis d opening 140 according to a rectilinear generator, but according to a slightly helical generator, so that the clamps located on the ends of the bar 100 are opened first.
  • This arrangement makes it possible to take account of the twist of the opening axis 140, which is only a hollow aluminum tube, during its rotation against the effect of the spring blades 110.
  • the part of the lower face lever 147 coming into contact with control means (not shown) is protected by a layer of elastomer, vulcanized or bonded in order to eliminate noise and reduce wear on the surfaces in contact.
  • Wedges 150 of hardened and hardened steel are fixed by screws inside the bar 100 along the center line of the bottom wall 100b. These shims 150 take up the bending forces acting on the clamp bar 100.
  • the gripper bar 100 is connected at each of its ends to a chain of chains (not shown) by a so-called "floating" fastening device shown on the left part of FIG. 2.
  • This device comprises a fastening piece 165 provided with an upstream arm 170a and a downstream arm 170b, both engaged with the corresponding end of the bar 100.
  • the attachment arms 170a, 170b have a shape which exactly matches the outer face of the upstream edges 100c and downstream 100d from the bar 100 to which they are attached using screws 162 placed from inside the bar 100 through the access orifices 116.
  • the size and arrangement of the attachment arms 170a, 170b are chosen so that they do not increase the height of the clamp bar in any way.
  • the attachment piece 165 is also provided with an upstream female knuckle 167a and a downstream 167b.
  • the "floating" device further comprises a male knuckle 169 forming part of a special link 174 of the chain train (not shown).
  • the male 169 and female 167 knuckles 167a, 167b are interconnected by means of an axis 172 in the form of a rod which passes through them by corresponding bores.
  • the rod 172 In the bore of the male knuckle 169, the rod 172 is surrounded by two bushings 171a, 171b made of synthetic resin separated from one another by a spring 180. A first bush made of synthetic material 171b is bonded to the bore of the male knuckle 169, while that the other sleeve 171a can freely slide in its bore.
  • the rod 172 In the bore of the downstream female knuckle 167b, the rod 172 is surrounded by a stop sleeve 173 acting in relation to a nut 160 engaged with a thread of the downstream end of the rod 172.
  • the upstream end of the rod 172 is provided with a head 172a so that, when the nut 160 is screwed, the rod 172 is fixed longitudinally relative to the female knuckles 167a, 167b.
  • the male knuckle 169 can slide via the synthetic bushing 171b bonded to the bore of the male knuckle 169, while, on the upstream side, this same knuckle slides directly on the upstream bushing 171a.
  • Such a fastening device allows the locking of the clamp bar 100.
  • the male knuckle 169 is also provided with a support arm 176 extending in the direction of the hollow bar 100 and the end of which penetrates inside the latter and engages in free sliding, in the direction of running of the chain of chains, in a hook 178 fixed on the internal face of the lower wall 100b of the bar 100.
  • the arm 176 prevents the rotation of the clamp bar around the rod 172.
  • FIG. 4 a second embodiment of a clamp bar according to the invention is illustrated.
  • the upper finger of the clamp consists of a spring leaf 310 of length greater than the width of the profiled bar 300.
  • the profile of the bar 300 is essentially rectangular.
  • the rectangular windows 312 are drilled at regular intervals along the upstream vertical edge 300c of the bar 300.
  • rectangular windows 311 are also cut in correspondence with the windows 312 along the downstream vertical edge 300d of the bar 300.
  • the attachment end 310a of the spring blade 310 is folded up on itself, so that once engaged through the bar 300 by the windows 311 and 312, it can be fixed to the face bottom of the downstream tongue 303, by means of a screw 315, a washer 318 and a nut 320.
  • the counter-clamp 325 is fixed under the upstream tongue 302 in correspondence with the window 312.
  • the support end of the blade spring 310 has the shape of a pointed tongue 326 curved downwards.
  • the end in correspondence of the counter-clamp 325 has two longitudinal projections.
  • a damping element 371 which, when the clamp is closed, prevents the tongue 326 from coming into contact with the counter-clamp 325.
  • the clamp opening device is completely external to the bar itself.
  • a large opening 330 is arranged under the blade 310, opening through which a roller 345 can pass which controls the opening of the clamps when it is moved upwards using means (not shown). ) controlled by the machine.
  • a layer of elastomer 370 is vulcanized under the leaf spring 310 at the place where the roller 345 pushes.

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Manipulator (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Advancing Webs (AREA)
  • Specific Conveyance Elements (AREA)
  • Chain Conveyers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Coating Apparatus (AREA)
  • Basic Packing Technique (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Packaging Of Special Articles (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Clamps And Clips (AREA)

Claims (18)

  1. Greiferstange zum Erfassen von plattenförmigen Werkstücken für eine Druck-, Stanz-, Präge- und/oder Rillmaschine zur Herstellung von Verpackungen mit einer Hohlprofilstange (100, 300), die wenigstens eine obere Wand (100a, 300a) und eine untere Wand (100b, 300b) sowie je einen Rand hinten (100c, 300c) und vorn (100d, 300d), und Greifer, die in regelmässigen Abständen über die Stange (100, 300) angeordnet sind und aus je einem oberen Finger (110, 310) in der Form einer Flachfeder bestehen, welch letztere an einem Ende (110a, 310a) am Rand (100d, 300d) vorn an der Stange (100, 300) befestigt ist, während das andere Ende (110b, 310b) mit Abstützung auf einem Greifergegenstück (125, 325) auf dem Rand (100c, 300c) hinten abgestützt wird, aufweist, wobei die Stange (100, 300) mit ihren Enden jeweils an zwei seitlichen Kettenzügen angebracht ist, dadurch gekennzeichnet, dass jede Flachfeder (110, 310), deren Länge grösser ist als die Breite der Stange (100, 300) ist, den Innenraum der besagten Stange (100, 300) durchquert und aus einem Fenster (112, 312) am Rand (100c, 300c) hinten an der Stange (100, 300) herausragt.
  2. Greiferstange gemäss Patentanspruch 1, dadurch gekennzeichnet, dass das Befestigungsende (110a) der Flachfeder (110) so gebogen ist, dass es an der Innenseite des Randes (100d) vorn befestigt werden kann.
  3. Greiferstange gemäss einem der vorstehenden Patentansprüche, dadurch gekennzeichnet, dass das Abstützende (110b) der Flachfeder (110) in der Richtung der unteren Wand (100b) der Stange (100) nach unten gebogen ist, wobei sich die aktive Fläche (127) des Greifergegenstücks (125) nach hinten bis auf die Höhe der unteren Wand (100b) erstreckt, während das Abstützende (126) der Flachfeder (110) sozusagen lotrecht zur aktiven Fläche (127) des Greifergegenstücks (125) nach unten gebogen ist.
  4. Greiferstange gemäss einem der vorstehenden Patentansprüche mit einer Antriebsvorrichtung zum Öffnen der Greifer in der Form einer Drehachse (140), die sich in der Längsrichtung der Greiferstange (100) erstreckt, wobei diese Achse (140) mit Hilfe eines Antriebshebels (147) zum Öffnen der Greifer an den beiden Enden der Greiferstange (100) gedreht und von der Maschine angetrieben wird, dadurch gekennzeichnet, dass die drehbare Öffnungsachse (140) auf Lagern (142) dreht, die an der unteren Wand (100b) der Stange (100) befestigt sind, sich über die ganze Innenseite der Hohlstange (100) unter den Flachfedern (110) in der Nähe des Randes (100c) hinten erstreckt, wobei mit der Achse (140) fest verbundene Öffnungsorgane (144) auf die Unterseite der einzelnen Flachfedern (110) in einer Zone zwischen dem Viertel und dem Drittel der Länge der Flachfeder (110) vom Abstützende (126) aus gemessen einwirken.
  5. Greiferstange gemäss Patentanspruch 4, dadurch gekennzeichnet, dass die nockenförmigen Öffnungsorgane (144) so auf der Öffnungsachse (140) angebracht sind, dass die entsprechenden Befestigungspunkte eine leicht spiralartige Linie beschreiben, um die Verdrehung dieser Achse (140) während ihrer Drehung zum Öffnen der Greifer auszugleichen.
  6. Greiferstange gemäss Patentanspruch 5, dadurch gekennzeichnet, dass die Form, Abmessung und Anordnung der einzelnen Nocken (144) in bezug auf die Flachfeder (110) so gewählt sind, dass die Hebelarmlänge (L₁) des Greifers fortschreitend so abnimmt, damit die Zunahme des Wiederstands der Flachfeder (110) ausgeglichen und das Öffnungsdrehmoment so begrenzt werden kann.
  7. Greiferstange gemäss einem der Patentansprüche 4 und 6, dadurch gekennzeichnet, dass die Öffnungsachse (140) aus einem anodisierten Aluminiumrohr besteht.
  8. Greiferstange gemäss einem der Patentansprüche 4 bis 7, dadurch gekennzeichnet, dass die Lager (142) und die Öffnungsnocken (144) aus Kunstharz bestehen, wobei die besagten Nocken (144) durch Aufkleben oder Versplinten auf der Öffnungsachse befestigt sind.
  9. Greiferstange gemäss Patentanspruch 1, deren obere Wand (300a) eine Zunge (303) umfasst, die sich nach vorn in bezug auf die Hohlstange (300) erstreckt, dadurch gekennzeichnet, dass das Befestigungsende (310a) der Flachfeder (310) durch ein Fenster (311) am Rand (300d) vorn an der Stange (300) herausragt und um ungefähr 180° nach oben gebogen ist, damit das besagte Ende an der Unterseite der Zunge (303) vorn befestigt werden kann.
  10. Greiferstange gemäss einem der Patentansprüche 1, 2, 3 oder 9, bei welcher das Öffnen der einzelnen Greifer von einem mit der Maschine fest verbundenen Antriebsorgan (345) individuelle bewerkstelligt wird, dadurch gekennzeichnet, dass das Greifergegenstück (325) mit einer Öffnung j(330) versehen ist, die sich zwischen dem Rand (330c) hinten an der Stange (300) und der aktiven Fläche (327) des Greifergegenstücks (325) befindet, wobei die besagte Öffnung durch die einzelnen Greiferöffnungsorgane (345) durchquert wird.
  11. Greiferstange gemäss einem der vorstehenden Patentansprüche, die mit beiden Enden an einem speziellen Kettenglied (174) der beiden seitlichen Kettenzüge durch eine Befestigungsvorrichtung verbunden ist, dadurch gekennzeichnet, dass jede Befestigungsvorrichtung wenigstens ein Befestigungsstück (165) mit zwei Befestigungsarmen (170a, 170b) umfasst, wobei die letzteren abnehmbar mit dem Rand (100c) hinten und dem Rand (100d) vorn an der Stange (100) verbunden und so gestalltet sind, dass jeder Arm (170a, 170b) der äusseren Form des Randes angepasst ist, ohne die Höhe der Greiferstange (100) zu vergrössern.
  12. Greiferstange gemäss einem der vorstehenden Patentansprüche, dadurch gekennzeichnet, dass eine Dämpfungsvorrichtung (371) zum Verminderung der Geräuschentwicklung, des Weges und der Abnützung zwischen dem Abstützende (310b) der Flachfeder (310) und dem Greifergegenstück (325) eingebaut ist.
  13. Greiferstange gemäss einem der vorstehenden Pantenansprüche, dadurch gekennzeichnet, dass das Abstützende (126) der Flachfeder (110) sozusagen lotrecht zur aktiven Fläche (127) des Greifergegenstücks (125) mit einem flachen und harten Schnabel gebogen ist.
  14. Greiferstange gemäss einem der Patentansprüche 1 bis 13, dadurch gekennzeichnet, dass das Abstützende (126) der Flachfeder (110) eine gezahnte Form aufweist.
  15. Greiferstange gemäss einem der vorstehenden Patentansprüche, dadurch gekennzeichnet, dass die aktive Fläche (327) des Greifergegenstücks (325) mit wenigstens einem Zahn versehen ist.
  16. Greiferstange gemäss einem der Patentansprüche 1 bis 12, dadurch gekennzeichnet, dass eine Elastomerschicht auf die aktive Fläche (127) des Greifergegenstücks (125) aufvulkanisiert ist.
  17. Greiferstange gemäss einem der Patentansprüche 11 bis 16, dadurch gekennzeichnet, dass das Befestigungsstück (165) mit zwei negativen Scharnierstücken (167a, 167b) versehen ist, die auf der Seite des Randes hinten und des Randes vorn an der Stange (100), und dass das spezielle Kettenglied (174) mit einem positiven Scharnierstück (169) versehen ist, wobei die drei Scharnierstücke (169, 167a, 167b) untereinander mittels einer Achse (172) in der Form eines Stifts, der die entsprechenden Löcher durchquert, verbunden sind, während das positive Scharnierstück (169), das mit Axialspiel auf einen Stift (172) montiert ist, zur Verriegelung der Greiferstange in einer Bearbeitungsstation dient und mit einem Abstützende (176) versehen ist, dessen Ende in einem entsprechenden Stück (178), das auf der Innenseite der unteren Wand (100b) der Stange (100) angebracht ist, frei gleiten kann.
  18. Greiferstange gemäss Patentanspruch 17, dadurch gekennzeichnet, dass im Loch des positiven Scharnierstücks (169) der Stift (172) mit zwei Kunststoffbuchsen (171a, 171b), die längs durch eine Feder (180) voneinander getrennt sind, umgeben ist, dass die erste Buchse (171b) auf der Seite des negativen Scharnierstücks (167b) vorn in das entsprechende Loch eingeklebt ist, während die zweite Buchse (171a) unter der Einwirkung der Feder (180) an das negative Scharnierstück (167a) anstösst und dass die Länge des positiven Scharnierstücks (169) geringer ist als der Abstand zwischen den beiden negativen Scharnierstücken (167a, 167b), damit sich das besagte Axialspiel ergibt.
EP91101856A 1990-03-24 1991-02-11 Greiferstange zum Greifen von plattenförmigen Gegenständen in einer Maschine zum Herstellen von Verpackungen Expired - Lifetime EP0448943B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH979/90A CH681885A5 (de) 1990-03-24 1990-03-24
CH979/90 1990-03-24

Publications (3)

Publication Number Publication Date
EP0448943A2 EP0448943A2 (de) 1991-10-02
EP0448943A3 EP0448943A3 (en) 1992-12-30
EP0448943B1 true EP0448943B1 (de) 1994-09-07

Family

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EP91101856A Expired - Lifetime EP0448943B1 (de) 1990-03-24 1991-02-11 Greiferstange zum Greifen von plattenförmigen Gegenständen in einer Maschine zum Herstellen von Verpackungen

Country Status (11)

Country Link
US (1) US5125640A (de)
EP (1) EP0448943B1 (de)
JP (1) JPH0729704B2 (de)
AT (1) ATE111049T1 (de)
AU (1) AU630283B2 (de)
BR (1) BR9101136A (de)
CA (1) CA2038120C (de)
CH (1) CH681885A5 (de)
DE (1) DE69103794T2 (de)
DK (1) DK0448943T3 (de)
ES (1) ES2058947T3 (de)

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Publication number Priority date Publication date Assignee Title
WO2012038035A1 (fr) 2010-09-22 2012-03-29 Bobst Sa Machine de traitement d'elements en feuilles comprenant un tendeur de trains de chaines

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IT1269473B (it) * 1994-01-26 1997-04-01 Ormag Spa Disposizione di montaggio della barra porta-pinze in macchine cartografiche
CH690098A5 (fr) * 1994-05-04 2000-04-28 Bobst Sa Barre de pinces comportant un dispositif d'attache à un train de chaînes au sein d'une machine de traitement d'éléments en plaque.
CH690097A5 (fr) * 1994-05-04 2000-04-28 Bobst Sa Dispositif d'attache d'une barre de pinces à un train de chaînes au sein d'une machine de traitement d'éléments en plaque.
DE19527439C2 (de) * 1995-07-27 2002-10-24 Heidelberger Druckmasch Ag Greiferbrücke für Ausleger von Druckmaschinen
US6116592A (en) * 1998-03-12 2000-09-12 Heidelberger Druckmaschinen Aktiengesellschaft Sheet conveyor for a delivery of a sheet-fed printing press
US6336310B1 (en) * 1998-09-08 2002-01-08 Sanford Redmond Method and apparatus for making compact packages for speadable product
DE29820660U1 (de) * 1998-11-18 1999-02-11 MAN Roland Druckmaschinen AG, 63075 Offenbach Hohlprofilierter Greifersystemkörper
JP2005126234A (ja) * 2003-10-22 2005-05-19 Heidelberger Druckmas Ag 印刷技術機械を通して枚葉紙を搬送するための装置
US20060032730A1 (en) * 2004-08-13 2006-02-16 Kaufman Paul J Belt conveyor apparatus
EP1647376B1 (de) * 2004-10-15 2008-01-30 Bobst S.A. Verfahren und Vorrichtung zur Aufnahme eines Blattes in einer Maschine zur Bearbeitung von brettförmigem Gut
TWI275484B (en) * 2004-10-15 2007-03-11 Bobst Sa Method and station for unblanked sheet delivery in a machine processing plate elements
EP1772405B1 (de) 2005-10-05 2009-04-08 Bobst S.A. Verfahren zum Positionieren von plattenförmigen Gegenständen in einer Verarbeitungsmaschine
RU2694303C1 (ru) 2016-03-09 2019-07-11 Бобст Мекс Са Сбрасывающий элемент и машина для обработки элементов в виде листов
CN108203010B (zh) * 2016-12-20 2021-03-09 博斯特（上海）有限公司 牙排锁定装置和片材处理设备
RU2768697C1 (ru) * 2018-07-11 2022-03-24 Бобст Мекс Са Корпус штанги захватного механизма для каретки захватного механизма
CN115676253B (zh) * 2023-01-03 2023-03-28 四川远方云天食品科技有限公司 一种流体火锅包装袋限位式筛选检测的链板型输送装置

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US2418065A (en) * 1940-10-16 1947-03-25 Bobst Henri Blank feeding means
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US2867275A (en) * 1956-07-18 1959-01-06 Bobst And Son S A J Sheet gripper means for presses
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IT1167360B (it) * 1983-05-20 1987-05-13 Siasprint Srl Dispositivo a pinza per il trasporto e la messa a registro dei pannelli o fogli da stampare su macchine per la stampa serigrafica a uno o piu' colori
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Publication number Priority date Publication date Assignee Title
WO2012038035A1 (fr) 2010-09-22 2012-03-29 Bobst Sa Machine de traitement d'elements en feuilles comprenant un tendeur de trains de chaines

Also Published As

Publication number Publication date
JPH04226234A (ja) 1992-08-14
DK0448943T3 (da) 1995-02-13
CH681885A5 (de) 1993-06-15
EP0448943A2 (de) 1991-10-02
AU630283B2 (en) 1992-10-22
DE69103794D1 (de) 1994-10-13
EP0448943A3 (en) 1992-12-30
AU7284891A (en) 1991-10-03
CA2038120A1 (en) 1991-09-25
ATE111049T1 (de) 1994-09-15
US5125640A (en) 1992-06-30
BR9101136A (pt) 1991-11-05
JPH0729704B2 (ja) 1995-04-05
DE69103794T2 (de) 1995-01-05
ES2058947T3 (es) 1994-11-01
CA2038120C (en) 1994-10-11

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