US1674920A - Liner-making machine - Google Patents

Description

June 26, 1928. l,674,920

G. A. ROBINSON LINER MAKING MACHINE Filed May 23, 1925 2 Smets-Sheet l ATTORNEYS Jam@ 26, w28, 1,674,920

`G. A. ROBINSON LINER MAKING MACHINE .Filed May 23, 1925 '2 sheets-smvb 2 ATTORNEYS Patented June 26, 11928.

la i u y 'unirse sr GEORGE A. ROBINSON, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO JOHNSON AUTO- IMATIC SEALER CO., LTD., A'IPARTNERSHIP, OF BATTLE CREEK, MICHIGAN.

LINER-MAKING MACHINE.

Application led May 23, 1925. Serial No. 32,410.

The present invention is an improvement' operative engagement with the second or in mechanism for forming bags or liners for high speed set of rollers. The forward edge 50 use alone or for use in cartons or otherconof the sheet is engaged by the high speed tainers. More especially the invention is rollers before the tail or. rear edge of the an improvement in means for feeding `the sheet passes out of the control of the first sheet of paper that is to constitute the bag set of feed rollers, thus maintaining conorvliner rapidly and accurately in position trol of the sheetat all times,insuring the 55 in front of a moving form,l about which they l delivery of the sheet in proper position with sheet is to be Wrapped or made into the its lower edge horizontal, and insuring thebag or liner. application of the glue along the 'entire line rlhe invention relates more particularly of the sheet and before the speed of moveto the type of machine shown in the patent ment of the sheet is accelerated by the high `to George H. Bent, No. 1,480,143, dated speed rollers. Further, the fact that the January 8, 1924, in which both the liner and sheet is sub-ject to the action of the two sets thecarton are made up about moving forms;. of feed rollers at the same time, one set c though it is to be understood that this deoperating at a higher surface speed than the vice is utilizable'in the making of paper bags other, operates to preserve the sheet in an 65 or liners to be used alone. unwrinkled condition.

In View of the fact that the bags orv liners The sheet after it passes under the conare made up around moving forms on an .trol of the high speed rollers is then rapidendless vconveyor that pass a given point at ly delivered into position to be Wrapped the rate of approximately 60 per minute, a about the form. It sometimes happens that 70 substantial problem is presented in feeding a. liner already fmade up about one of the the liner sheets accurately and swiftly in. moving forms will not be dischargedfrom position in front of successive forms and to the same and will return to the sheet Wrapmaintain the sheets in the feeding operation ping position. Accordingly, a safety mechl unwrinkled. Further, when a strip of ad-'i anism is provided to prevent the feed of a 75 hesive is to be applied to the sheet the matsecond sheet about the liner on the form, ter of feeding the sheet accurately aligned preferably in the form of a clutch mecha- 0 and rapidly is rendered more difficult, as the nism the driven side of which is connected adhesive should be applied when the sheet to and drives the first or low speed set of is moving at a relatively lovv7 speed in order feed rollers. I 80 that the adhesive may be applied along the rllhe invention also resides in means for entire line r`of the vsheet and without splash-` insuring the accurate downward feed of the ing of the adhesive. l sheet vas the same passes around the ,sever- Under these conditions it has been found *ing mechanism. rlhe path of the sheet is desirable to provide two sets of sheet feed preferably changed at this point and the 85 rollers, one set of which travels at a much tendency of the'sheet is to continue its horhigher surface speed than the other set. The izontal movement in the direction in which 40 sheets are preferably rst severed from a it approaches the severing mechanism; and web by any suitable cutting or severing it has therefore been found desirable to mechanism and are then fed into engageprovide control mechanism at this point to 9o ment With the first set of feed rollers7 insure the proper translation in movement though sheets fed from a pile might be used. of the sheet. I

If a strip of adhesive is to be applied to the @ther improvements and features will be.

sheet, the gluing mechanism is preferably set forth as the invention is described in depositioned in association with this fset of tail. rollers, which latter delivers the sheets into` The invention will be -better understood particularly the construction and mounting Y of the clutch mechanism which operates to stop the sheet feed if a liner has not been removed from the form;

l Fig. 3 is a side elevation showing the relation of the sheet severing mechanism, the feed rolls, and the severed sheets in difl'er- 'ent positions; and

Fig. '4 is a detail view showing the means for insuring the downward feed of the sheets as they pass around one of the cutter rolls.

rllhe invention will be better understood by reference to the accompanying drawings, in which like reference numerals indicate like parts. As indicated above the invention is particularly adapted for use in connection with machines of the general structure indicated in qthe Bent Patent No. 1,480,143. As herein shown a roll of paper 10 is supportedon a shaft 11 mounted in standards 12, and the web of paper 13 is fed upwardly from saidr roll, passing over 'a suitably supported guide roll 14 and thence over a second guide roll 15 loosely mounted on a shaft 16, thence downwardly between rollers 17 and 18 mounted respectively on driven shafts 19 and 20. rlhese rollers 17 and 18 are preferably metal rolls, and shafts 19 and 20 carry, respectively, gears 21 and 22 that intermesh and insure the rotation of said shafts-to feed the web horizontally into engagement with the severing mechanism. This severing mechanism is preferably in the form of a pair of cooperatingl rollers 23 and 24, one' of which carries a cutting blade 25 and the other of which is provided with a recess 26 that cooperates with said blade. The roller 23 is mounted on driven shaft 27 and the roller 24 is mounted on the drivenshaft 28. The shaft 27 carries a gear 29 and the shaft 28 carries a gear 30 which mesheswith the gear 29.

" The shaft 28 is driven from the driven side of a clutch mechanism, hereinafter more fully described, and the cutter rolls and the feed rolls 17 and 18 are also driven from this shaft. The'feed rolls 17 and 18 are connected to and driven from` shaft 28 through an intermediate idler gear 31 mounted on a stud carried. by the frame of the machine, this idler gear y31 meshing with gear 32 on shaft 28 and also with gear 32 carried by s'haftv20.

In order yto accurately and definitely change the path of the sheet from horizontal to vert-ical as it passes downwardly around aereas@ roller 24 on its way to the sheet feed rollers, a plurality of guide fingers 33 are mounted on a "shaft 34 carried by the cutter roller 23. The shaft 34 on which the fingers 33 are mounted, is provided with an arm 35, positioned outside of the roll 23, and this arm 35 carries a roller` 36 that engages a heartshaped cam 37, which cam 37 is concentric with shaft 27 and is mounted on one of the -proper translation in movement of the As the roller 23 continues to rot-ate sheet. the guide fingers 33 are returned to the fullline position shown in Figure 3. In order to further insure the accurate initiation of the movement of the sheet downwardly, there is preferably also employed a plurality of stationary curved guide fingers 42 mounted on a bar 43, these lingers being spaced between the pair of tension rollers 38.-

As the sheet passes downwardly between the rollers 24 and 38, the forward 'edge of the sheet is engaged by a plurality, preferably two, sheet feed rollers 43, against 4which rollers the sheet is held by tension rollers 44 similar in construction and operation toi A line of adhesive indicated at46 (Fig.

1) is preferabl applied to the sheet as it is progressed ownwardly. This adhesive is preferably applied by a glue roller 47 mounted on shaft 45, and taking the glue from a suitable fountain or receptacle 48. The glue is applied to the sheet while it is moving at the surface speed of the rollers '43,' and the glue is applied to the sheet throughout its linear extent, along theline indicated, before the forward edge of the sheet passes under the control of the' high speed rollers'49.' This isimportant in insuring the accurate and proper application of the strip of adhesiver and to prevent the glue from being splashed about, whichwould be the case if glue were being applied to the sheet while it was being fed by the high speed rollers.

The high speed rollers 49 are mounted on a shaft 50, and preferably two such rollers are employed. rllhe sheet is held in engagement with said rollers by means of tension rollers 51. Shaft 5() carries a. sprocket wheel 52 around which passes a sprocket chain 53 that also passes around a sprocket wheel 54 on a shaft 55 that carries the clutch, hereinafter referred to. These high speed rollers 49 are driven at a speed considerably in excess of the speed of rollers 43, and a surface speed of rotation of rollers 49 about four times as high as the surface speed of rotation of feed rollers 43 has been found to be desirable. lin view of the speed of travel of the forms abont which the liners are to be wrapped and of the close spacing of the forms on the conve aftyer the sheets have been supplied with the line of adhesive, to insure their rapid and accurate delivery in position in front of the proper form. As indicated above, when the advancing edge of the sheet has passed into the bite of rollers 49 and 51 the rear edge of the sheet is still within the bite of the rollers 43 and 44. lit is noted that the tension on p the rollers 44`is heavier than the tension on the rollers 51, in order that the rear edge o the sheet shall be held against the rollers 43 and controlled thereby even after the front edge has passed into the bite of rollers 49 and 51, to insure the sheet being fed at the speed of the rollers 43 until the rear edge of the sheet has passed out of the bite of rollers 43 and 44. 'llhis control of the sheet insures that the adhesive is accurately and properly applied and that the lower edge of the sheet shall be maintained in a horizontal position for proper positioning in front of the form; and the differential speed of movement between the'rollers 43 and 49 insures that the sheet so delivered will be unwrinkled and in perfect condition. The control of the sheets in this manner by the cooperative act-ion o the rollers 43 and 49 obviates the necessity for any side registering of the sheet after it has reached its wrapping position in front of the form; and the high speed of movement of the sheet' underr he influence of the high speed rollers 49, after the glue has been applied to it, insures its presentation to its corresponding form in time for the wrapping operation.

rlihe sheet is deposited by the rollers 49 on a pair 'of stops or supports 56 that are carried by a stationary plate on the frame of the machine, and the sheet is removed from these supports by one of the traveling forms 57. 'llhese forms are carried by a conveyor 58 preferably constituted by a pair of sprocket chains which pass around sprockets 59 and 60 on shaft 61 and sprockets 62 and 63 on shaft` 64. 'llhe movement of the form 57 or that carries the same, it is necessary,l

against the liner sheet, positioned in its path,

insures the wrapping of the liner around the advancing and side faces of the form, and any suitable mechanism, such as that disclosed in Bent Patent No. 1,480,143, may be employed for folding the rear projecting edges of the liner against the rear face of the form. The edge of the sheet that carries the line of adhesive is folded down on the other rear edge of the liner and caused to adhere thereto in any suitable manner. Likewise, the portions of the liner that project above the form may be folded and secured, if desired, in any suitable manner such as that disclosed in Bent Patent No. 1,480, 143. The sheet thus formed into a bag or liner may be removed from the form in any suitable manner, either before or after a carton has been placed or formed on the form around the liner. As seen vin Figure 1, a liner is shown with portions projecting upward above the form at 57 and the complete liner as formed is shown at 57 The drive for the described mechanism is eected by a motor which carries a small pulley 66 on the armature shaft, a belt 67 passing around said pulley and around a pulley I68 carried by shaft 69. Shaft 69 is rovided with a sprocket wheel 70 that drives shaft 61 through sprocket chain 71. llhe f form conveyor 58 is driven from shaft 61 and the movement 0f conveyor 58 edects the rotation of shaft 64, which latter carries. a sprocket wheel 7 2 around which passes a sprocket chain 73 that also passes around a sprocket 74 on shaft 55 and drives the latter. Power is conveyed from shaft 55 toshaft 50 through sprocket chain 53 as heretofore described.

f 1n the event that a liner should not be removed from its form and should again approach the sheet delivery position, it is desired to prevent a second liner from beingVl wrapped around the first. To avoid such a contingency a detector finger 7 5 is provided and this finger is adapted to engage in a sl-ot 76 carried lby each of the forms 57.

rllhe detector nger is positioned to engage the slot in the form one removed from the position in which the sheet is engaged by the form. rfhis finger is mounted on avertical shaft 77, preferably carried in a pair of ball bearings at 78 and 79, and connections are provided from this shaft to the clutch mechanism to open the same should a llner on the form prevent the detector finger from entering the slot 76. rllhis clutch is of any suitable or well known construction, and is provided with la driving partand a driven part, both mounted on shaft 55. rlhe driven part carries a sprocket wheel 80 around which passes a sprocket chain 81 that also passes around a sprocket wheelf82 on shaft 45 and a sprocket wheel 83 on shfaft 28, Accordingly, when the clutch is opened,

shafts and 28 at once cease to rotate.v

rllhis insures the stoppage of the sheet severing mechanism and also the stoppage of the low speed sheet" feed rolls 43. l'llhe clutch is so arranged that when the same is opened, the feed will be interrupted in such-a'position that the sheet that is about to be out from the web will still be in engagement with the severing mechanism, but, in view of the fact that the high speed rolls 49 are continuously driven, t-he sheet that has already been severedand which, in the position of the parts as indicated in Figure 3 is about to pass under the influence of the high speed rollers 49, will be delivered in position to be wrapped about the approaching form 57a. 'ilhe form following 57a is the one on which the liner is already present.

^ The particular form of clutch that is illustrated herein employs a punter 84 pivoted,

at 85 to one end of an arm 86 pivoted to the frame of the machine at 87. rlhe lower free end of the punter'84 is connected to one end of a link 88, the other end of which is connected to the free end of an arm 89 carried by vert-ical shaft 77. Normally the detector finger 7 5 and the link 88 hold thelower end of punter 84 in position over the horizont-al arm of a bell crank lever 90 pivoted at 91, to rock said lever 'by the action of a cam 92 carried by shaft 55, said cam engaging a roller 93 carried by arm 86.

yWhen the punter 84 rocks the bell crank 90 the vertical arm thereof moved out of the course of travel of a clutch pawl 95 (Fig.

and the clutch is maintained closed, but 1f the punter should not rock the bell crank 90, as would be the case if the detector fin ger were unable to enter the slot 76 due to the presence of a liner, the vertical arm of said bell crank would remain in the path of travel of pawl 95, strike the tail or left hand end thereof (Fig. 2), and operate to disengage the clutch. A disk 93 is plO- vided with a single tooth 94 and this disk continuously rotates with shaft 55 in the direction of the`arrow, as in Figure 2. lin driving position this`tooth is engaged by the nose of pawl 95 which is pivoted at 96 yona second disk 97 mounted on'a sleeve 97 loose on shaft 55. The sprocket 80 iS fixed to this sleeve and rotates when said sleeve rotates. The vertical arm of the bell crank 90, as before stated, is normally removed from the path of the pawl 95, but in the event that the' detector mechanism operates, this ver` tical arm remains" in the path of the pawl 95, engages ,the tail of said pawl, and accordingly trips the same and disengages the nose ofthe pawl from the tooth 94, thus yleaving the disk 97 and sprocket 80 stationary, stopping the operation of the paper feeding andl cutting mechanism, and interrupting the feed of the sheet' above t-he high -speedvrollers 49. `-f f Lef/4,92@

which is connected to an arm 103 secured to the bell crank 90.

By the present invention the sheets are accurately and rapidly fed into position to be wrappedabout the forms and the mechanism is adapted to feed said sheets tothe forms for the production of a. high quality of bag or liner at the rate of 60 or more per minute. v

While for the purpose of'illustration one expression of the inventive idea. has been herein illustrated and ldescribed in detail, it is to be understood that the invention is, susceptible of expression in various mechanical forms within the limits of the appended claims, and it is alsoto be understood that thc terms vertical and horizontal as applied to the direction of feed of the sheets are relative terms. It will further be understood that under certain conditions as, for example, where waxed paper is used, it may be unnecessary to apply a stripof adhesive thereto, as the Wax coating on. the paper mechanism for feeding the sheet downwardly into-the path of travel of the form, said mechanismcomprising low speed feeding means and high speed feeding means arranged in spacedl superimposed relation above said endless carrier.

2. The combination with a. horizontally movable endless carrier having a form thereon, of means for feeding sheets vertically into the path of travel of the" form, said means including low speed feeding lrollers and high speed feeding rollers arranged in spaced superimposed relation adjacent the endless carrier, said high speed feeding rollers' delivering the sheets into positionrto be enga-ged about the form. v

3. )'llhe combination with a horizontally movable endless carrier having a form thereshaped to guide 4. ln combination, a moving form, means for feeding sheets of paper in position to be Wrapped aboutthe form and comprising a plurality of low speed rollers spaced apart on a common axis and a plurality of high speed rollers spaced apart on a common axis, and a corresponding number of tension devices associated With both the low speed rollers and the high speed rollers, the tension devices associa-ted with the lovv speed rollers being stronger than the tension devices associated With the high speed rollers.

5. ltnlcombination, an endless carrier having a form thereon, sheet cutting means spaced from the carrie-r including a pair of rollers one provided with movable fingers arranged to guide the sheets'around the other, means for feeding a web to said sheet cutting means, and sheet feeding means interposed between said cutting means and the carrier and comprising a low speed device receiving the sheet from the cutting means and a high speed device receiving the sheet from the low speed device and delivering said sheet in position to be wrapped about the form on said carrier.

6. ln combination, an endless carrier having a. form thereon, sheet cutting means spaced from the carrier comprising a pair o rollers, a severing blade carried by one of said rollers, and automatically operated fingers carried by the blade roller and the sheet around the other roller, means' for feeding a Web to the sheet cutting means, and sheet feeding means interposed between said cutting means and the carrier and comprising low speed rollers receiving the sheet from the cutting means and high speed rollers receiving the sheet from the low speed rollers and delivering said Sheet in position to be wrapped about the form on said' endless carrier.

' 7. lln combination, a movable form around which a sheet of paper is adapted to be.l

Wrapped, high speed rollers for feeding the sheets into Wrapping position, loW speed rollers for feeding the sheets to said high speed V rollers, anda liner operated detector mecha.-

nism for interrupting the rotation of said low speed rollers When a liner is present on said form..

8. ln combination, a movable-form around which a sheet of paper is adapted to be Wrapped, a web feeding means, rotary means for severing the web into sheets, sheet feeding means for delivering the sheets into position to be Wrapped comp-rising two sets of rollers,

means for driving said sheet severing means and one of the sets of rollers, and a liner 0perated detector mechanism for preventing rotation of said sheet severing means and said set of rollers When a liner is present on said form.

9. ln combination, a moving form about which a sheet of paper is to be- Wrapped,

means for feeding the sheets into Wrapping position in front of said form comprising loW speed rollers and high speed rollers, means for continuously driving the high speed rollers, and a liner operated detector mechanism for preventing rotation of the low speed rollers when a liner is present on said' form.

l0. ln combination, a horizontally movable endless carrier having a form thereon about which a sheet of paper is to be Wrapped, means for feeding said sheet vertically to a posit-ion in front of the form and comprising lo\v speed rollers and high speed rollers arranged in spaced superimposed relation adjacent. the endless carrier, and a glue roller mounted on the axis of the low speed rollers and adapted to apply a strip of adhesive to the sheet.

1l. ln combination, a horizontally movable endless carrier having a form thereon yabout which a sheet of paper is to be wrapped, means for feeding said sheet vertically to a posit-ion in front of the vform and comprising low speed rollers and high speed rollers arranged in spaced superimposed relation adjacent the endless carrier, a glue roller mounted on the axis of the low speed rollers and adapted to apply a strip of adhesive to the sheet, and tension means associated with the low speed rollers and operating to hold the rear edge of the sheet in engagement with the loW speed rollers after the front edge of the sheet has been engaged by the high speed rollers and until the rear of the sheet has passed said tension means.

l2. ln combination, a horizontally moving endless carrier having a form thereon about which a sheet of paper is to be wrapped, means for feeding the sheet downwardly in front of the fo-rm comprising 10W speed rollers and high speed rollers disposed in spaced superimposed relation over said endless carrier, and -means for maintaining the lower edge of the sheet in a horizontal plane, comprising tension devices cooperating With the loW speed rollers and the high speed rollers, the tension devices at the low speed rollers being stronger than those at the high speed rollers.

` 13. ln combination, a form about which a blank is to be Wrapped, means for feeding blank material toward the form and comprising low speed rollers and high speed rollers, and means adapted to apply a strip of adhesive to the blank material.

14. ln combination, a form about which a blank is to be Wrapped, loW speed rollers and high speed rollers for feeding the blank to the form, means-for applying a strip of adhesive to the blank, and tension means associated with the low speed rollers and operating to hold one edge of the blank in engagement with the loW` speed rollers after the opposite edge of the blank has been engaged by the high speed rollers and until said first named edge of 'the blank has passed said tension means.

15. In combination, a form about Which a blank is to be Wrapped, 10W speed rollers and high speed rollers for feeding the blank to the form, and means for maintaining the leading edge of the moving blank parallel with the axes of said rollers and comprising l0 In testimony whereof l have signed this 15 specification.

GEORGE A. RiOBlNSON.

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