US2241664A - Gluing and sheeting machine - Google Patents

Description

J. A. HECKMAN I GLUING AND SHEETING MACHINE May 13, 1941.

Filed Feb. 24, '1938 4 Sheets-Sheet 1 lvlay 13, 1941. J, A, HECKMAN 2,241,664

GLUING AND SHEETING MACHINE Filed Feb. 24, 1958 4 Sheets-Sheet 2 May 13, 1941. J. A. HECKMAN 2,241,664

I GLUING AND SHEETING MACHINE I Filed Feb. 24, 1958 n 4 SheetS-Sheet 5 May 13, 1941.

J. A. HECKMAN 2,241,664

GLUING AND SHEETING MACHINE Filed Feb. 24, 1958 4 Sheets-Sheet 4 Patented May 13, 1941 UNITED sTATEs PATENT OFFICE John A. Beckman, Chicago, Ill., assignor to Miller Wrapping and Sealing Machine Company, Chicago, Ill., a corporation ot Illinois Application February 24, 193s, serial No. 192,332

An object of this invention is to provide a machine for automatically advancing a web from a roll of Cellophane or the like, applying a strip of glue or wax to one or both side edges, apply- 'ing a line of glue or wax transversely of the web and'severing the web to form a sheet.

Another object is the provision of apparatus for applying a strip of glue or a plurality of dots or a single dot of glue as desired to one or both side edges.

Another object is to provide means for applying a transverse "line of glue to a web or sheet.

Still another object is to provide a 'means for floating the gluing mechanism on the roll on which the web passes so 'as torender uniform the application of glue to the web.

These and other objects, as will hereinafter appear, are accomplished by this invention which is fully described in the following specification and shown in the accompanying drawings in which l Figure l'is a side elevation of a machineY einof Fig, 3;

Fig. '5 is an enlarged front elevation ofthe' transverse gluing mechanism of Figs. 2, 3 and 4 showing the glue pot partly in section, the gluing disk in an inoperative position wherein it seals the spout from the glue pot;

Fig. 6 is a similar view'showing the gluing disk in operation wherein its periphery is re ceiving glue from the spout; Y ,Flg. 'l is a partial enlarged view on line 1-1 f Fig. 2; j Y

Fig. 8 is a partial enlarged vertical section 4on. line 8-8 of Fig. 2 showing the cutting and longitudinal gluing mechanism;

Fig. 9 is a partial view on the broken of Fig. 2; and

Figs, 10, 11' and 12 are plan views of the sheet during the process of being glued and cut. I

The embodiment illustrated comprises a gluing and sheeting machine having a main frame I3 having side frame members I4, I5. I

A roll A of Cellophane or the like is mounted to turn in the frame and a web A1l passes up over l an idler roller I6 and over anvoperating roller Il thence under a transverse gluing mechanism B and beneath a knife C where the sheet is sevj ered. After this, the detached sheet Az (Fig, 12)

passes on to the continuously operating belt conveyor I8 (Fig. 8) which is driven in any suitable fashion and which is not shown in detail as it forms no part of the present invention. As the web passes under the roll Il it is glued along the lines D1 and D2 (Fig. 10) by the mechanism represented generally as D in Figs. 2 and 8. Then, after ythe sheet has passed around the roll I'I and has been brought to rest, as will later be described, the transverse gluing mechanism B applies glue to the sheet beginning at the point B1 (Fig. 10) and traveling downward across operations consists of an oscillating lever 20 which is connected to a shaft 2I which is mounted in suitable bracings on the frame of the machine. This shaft carries an operating lever l22 which is connected by means of a connecting rod 23 to a pin 24 on a gear 25 which is mounted on a shaft, not shown, and geared to a pinion 26 which is mounted on a shaft which also carries a sheave or pulley 21 which is driven by a motor 28 by means of asuitable belt 29.

The lever 20 has an extension 30 which carries a cam follower roller 30h which acts upon a cam 3| which is mounted on an oscillating lever 32 which is pivotally mounted at 33 on the side of the frame. 'Ihe lever 32 is connected to a vertical link 34 which connects at its upper end with the outer end of a knife 35 (Fig. 2) which is connected atv the/opposite end on-a pivot 33V and which is moved up and down about the pivot 36 as shown in full and dotted lines in Fig. 8.

vAs it descends, the movable knife 35 passes the stationary knife 3l over which passes the. sheet A1 thereby severing the same to produce the sheet A2.

Upon the lever 20 is mounted a member 38 which is adjustable up and down by means of a screw 39 so as to vary the length of web fed at each actuation of the lever 20, the throw of the lever remaining constant. A bar 40 having a rack formed on its upper surface is connected at this ower end tov the member 38 while the rack meshes with a pinion 40'. The pinion is connectedto the roll l1 by means of a suitable ratchet arrangement so that as thev bar 48 moves tothe right,-the roll i1 will be normally driven to feed by means ora stop lssl on the block sa. As the forward the web A'.1, but upon reversal of movei l ment of the bar 48, the roll I1 remains stationary.

The mechanism B for producing the glue line B2 will now bedescribed. This comprises a carriage 4| (Fig. 7) which is slidably mounted upon guide rods 42, 48, which are suitably Ycarried by the main frame. To the carriage 4| is pivotally mounted a' member 44, means of a pin 45, the.

same being normally drawn down by. gravity assisted by a spring 45 (Fig. 3). The member 44 carries a glue pot 41 which is secured thereto by means of a screw 48 (Fig. 5). The level of the glue or wax is shown by the numeral 48.

A'gluing disk 58 is pivotally mountedat 5| on a lever 52 which in turn is pivotally mounted at 58 on the glue pot 41 in the normal inoperative `position shown inFig. 5. The disk 58 has a' flat periphery which rests against a spout 54 which connects with the bottom of the glue pot 41. In this position, the disk 58` which is wide enough to cover the spout 54 serves to close the same so that glue or the like in the glue pot will not flow out. The weight of the disk 58 normally serves to close the opening in the spout and gravity is assisted by a` spring 55 which is placed about a screw 55 passing through an arm 51 rigidly mounted to the glue pot, said screw serving to regulate the distance the disk 58 can leave the spout 54. 'I'his distance will thus fix the depth of the film of glue 58 of Fig. 6 which is shown being applied to the web A1 to form the strip of glue B2 of Fig. 1l.

Thus it will be seen that glue will only be fed to the disk while it is in contact with the web.

The mechanism for bringing this disk into contact with the web will now be described. A cam follower block 58 is pivotally mounted on a pin 58 in the member 44 and is normally pressed upwardly as viewed in Fig. 5 and in a clockwise direction as viewed in Fig. 3 by means of a spring 5|. The block 58 has a pin 52 on which is rotatablymountedva cam follower roller 58.

The carriage 4| is moved back and forth on the guides 42, 48 by means of a steel rope 54 which is secured thereto by means of a screw 85 as shown in Fig. 1. Referring to Fig. 2, the rope 54 passes around sheaves 55, 51 and 58 which are suitably mounted on the main frame. The two vertical sections of the rope 54 at the left of Fig. 2 are shown in Fig. 1 where they pass around sheaves 58, 18 which a're also carried on the main frame. One end of the rope 54* passes around the sheave 58, then passes around a sheave 1| on a lever 88* connected to the lever 88, and is fastened to a stationary pin 12 on the main frame.

The opposite end of the rope 54", after leaving the sheave 18, passes around a sheave 18, thence around a sheave 14. also on thelever 88 and has its end secured to'the main frame at 15.

Thus, it will be seen that as'the lever 28 isv roller moves forward. it follows the cam' 18 as shown in the position 58* (Fis. 4) until it reaches a point near the opposite end of its travel 58b at which point it engages a deflector 11 which forces it back against the action of the spring 5| and it follows tothe position 58h where it rests on the top of a `cam 18. The vertical edge of the cam 15 prevents the roller from again climbing back on the latter cam and causes it to follow the top surface ofthe cam 18.

As the carriage 4i is now returned toward the right in Fig. 4, the roller 58 drops off the end of the cam 18 as shown at 58. Up to this time,

the gluing mechanism of Fig. 5 has been raised so that the disk 58 is out of contact with the web A1, but as the roller 58 runs oi the cam 18 the disk 58 is droppedinto contact with the web A1 as shown in Fig.- 4'and as the gluing mechanism is propelled to the right, the disk 58 will remain in contact with the web until the roller reaches a position 58d in which it runs up the face of an inclined cam 18. Between the positions of rollers 58 and 58d, the disk 58 has been in contact with the web A1 and has rolled thereon thereby depositing a strip of glue Bz as shown in Figs. 4 and 6.

The roller then continues to move to the right in rocked back and forth, the rope 54 will be fed back Iand forthl thereby drawing with it the carriage 4| of Fig. 7- and the gluing disk 58. This disk is raised and lowered by means of longitudinal cams over which the cam follower roller 58 passes. These cams areshown in Figs. 3 and 4. This transverse gluing mechanism is normally in the position shown at the left hand side of Fig. 3 and the right hand side of Fig. 4.

' With the parts in this position, as the carriage -moves to the right in Fig. 3 and to the left in Fig.

4, the roller 58 rides up on a runway 16 and is held there longitudinal cam or by the spring 5I and Fig;4 from the position 58d to the position 58 at which point'it has passed the end of the cam 15 and the spring 5| again forces the roller over to a position where it will again ride upon top of the cam 15 when the follower is again' moved to the left.

' I'he cams 18 and 18 are mounted on a screw 88 which has right hand threads on one end and left hand threads on the other, the screwbeing suitably journaled in theframe that supports the guides 42 and 48 and having an adjusting handle 8| for rotating it soas to adjustthe distance between the cams 18 and 18, thereby adjusting the length of the glued strip B.

The mechanism for applying' the longitudinal strips of glue D1 and D will now be described. The parallel gluing mechanisms D of.Flg. 2 and 8 are mounted onvarms 82 which are slidably and adjustably mounted upon a hollow shaft 88 which carries a spline or key 84, these arms being adjustable longitudinally of the shaft 88 by means of the screws and key 84. This shaft is -rotatable in suitable lbearings 85, 81 which are carried by the main frame.

The arm 82 (Fig. 8) carries a guide pin 88 on which is slidably mounted a member 89 which has an adjusting screw 88 at its lower end, the head of this screw normally being held up against the end of the pin 88 by means of a spring 8|. The member 88 has secured thereto a glue pot 82 in which rotates a gluing disk 88 which dips in the glue, the level of the latter being shown by the number 84. The glue pot is covered by a suitable adjustable lid having a slot through which the glue disk 88 operates. A finger 85 at each side of this disk removes glue from the sides of the disk. A pressure roller 85 is mounted to roll on the pin 81 at the upper end of -a pressure lever 88 which is pivotally connected to the upper end of the lever 82 by means oi' pin 88. A

, spring :|88 connects .the levers 82 and 88 and its center lying inside the pin 88 constantly tending to keep the roller 85 in contact with the roll I1 so as to exert a slight pressure on the web'All contact with the web and consequently no glue is applied. When, however, the gluing disk is moved back to the full line position'of .the gluing disk I3, the latter is in contact with the web and glue will be applied thereto. to form the 'longitudinal glue lines DI, D2 of Fig. l0.

The method of moving the shaft 03 to accomplish this will now be described. Referring to Fig. 1, a cam follower is mounted on the end of a lever |02 which is pivotally mounted at |03 on the side of the frame. Cams |04 and |05 are mounted on a carriage |00 which is slidably mounted on guides |01 which are carried by a bracket |00 secured to the main frame. The carriage is connected by means of a link |09 to the oscillating lever 20 so as to be moved back and forth as the lever is oscillated.

The cam |04 has a support |04'I which is threaded to receive an adjusting screw ||0 which has an adjusting lever Similarly, the cam |05 has a support |05'I which is threaded to receive a screw ||2 which has an adjusting lever |'|3. Thus it will be seen that eachof the' cams |04 and |05 is individually' adjustable back and forth with respect to the follower |0| with which they cooperate. As will later be seen, the gluing mechanism is held in the dotted line position of Fig. 8 in which it is inoperative so long as the follower |0| rides on top of either of the cams |04 or |05. By bringing these cams therefore together, neither of the longitudinal glue lines D1 or D2 would be formed on the web. By a reverse mechanism, however, which will later be described, this method of operation will just be reversed and gluing will take-place only when the follower |0| rides on top of one or other of the cams |04 or |05. The cam follower lever |02 (Fig. 9) carries two projections 4 and ||5. The shaft 83 is hollow and journaled therein for oscillation is a reversing shaft ||6 having a reversing lever which is normally urged toward the right by means of a spring ||8. The opposite end of the shaft ||6 carries a reversing lever I0 which has one or more teeth |20 adapted toengage in slots |2| in a clutch |22 secured to the end of the shaft 83. The outer end of the reversing lever ||9 is provided with adjusting screws |23, I 24. 'I'he screw |23 is adapted to engage the projection I4 while the screw |24 engages the projection I I'5.

Normally this reversing mechanism will be operated in the full line position in which the lever H9 is operated by the projection ||4 on the cam follower lever. In this position, glue will be applied-by the gluing disk 93 only so long as the follower I 0| does not ride upon either of the cams |04 or |05. So long as it does ride upon one of these cams, the gluing mechanism D will be held in the dotted line position of Fig, 8 and is released to the full line position when the follower runs olf these cams. It will be apparent, however, that by reversing the lever I9 to the dotted line position of Fig. 9, the action of the shaft 83 will be exactly reversed and the glue will'be applied so long as the follower |0| is raised by either of the cams |04 or |05, and that no glue will be applied when the cam follower is off both of these cams.

Thus it will be seen that this latter arrangement in which the lever ||3 is in the dotted line position of Fig. 9, two spots of glue may be applied instead of one, or a single spot of glue may be applied at one end only of the web. 'Ihis is particularly useful where the sheet to be cut is quite small and it is necessary to apply a spot or line of glue to the web considerably in advance 'of cutting the sheet, or in the case of a large sheet.

Thus it will be seen that a very exible'arrangement has been provided for'applying glue to sheets covering a wide variety of shapes and sizes. If desired, the glue may be replaced by a wax. After the wax has' been applied to the sheet and cooled, it may be heated to cause overlapping portions of the sheet when folded about a package to adhere.

I claim:

l. In mechanism of the class described, means for intermittently advancing a web, means for applying glue to a predetermined line along one edge of the web while it is advancing, and transversely movable means for applying a line of glue transversely of the web.

2. In mechanism of the class described, a roll over which passes a web, a glue pot having a gluing disk rotatable therein to pick up a film of glue on its periphery, a lever mounted to rotate about an axis, the glue pot being slidably and yieldably mounted on the lever, and means for moving the lever so that the disk will be moved into and out of engagement with the web as it passes around the roll as the lever is moved.

3. In mechanism of the class described, a roll over which passes a web, a glue pot having a gluing disk rotatable therein to pick up a film on its periphery, a lever mounted to rotate about an axis, the glue pot being slidably mounted on the lever, a stop for the glue pot, a spring for normally yieldably holding the glue pot against the stop, and means for moving the lever so that the disk will be moved into and out of engagement with the web on the roller as the lever is moved.

4. In mechanism of the class described, a roll over which passes a web, a glue pot having a gluing disk rotatable therein to pick up a film of glue on its periphery, a member on which the glue pot is slidably mounted, a stop for limiting the upper movement of the glue pot, a spring tending to hold the glue pot in engagement with the stop, and means for moving the member to cause the gluing disk to engage the web.

5. In mechanism of the class described, a roll over which passes a web, a blue pot having a gluing disk rotatable therein to pick up a film of glue on its periphery, a lever mounted on a shaft, the glue pot being operably mounted on the lever, and means for rocking the shaft to cause the disk to engage the web as it passes over the roller, said means including a cam, a cam follower, a cam follower lever, and a lever operably connecting the cam follower lever to the shaft, the last-mentioned lever being reversible so as to cause the action of the gluing disk to be reversed upon motion of the cam follower.

6. In mechanism of the class described, a roll over which passes a web, a glue pot having a gluing disk rotatable therein to pick up a film of glue on its periphery, a lever mounted to rotate about an axis, the glue pot being slidably and yieldably mounted on the lever, means for moving the lever so that the disk will be moved into and out of egagement with the web as it passes around. the roll as the lever is moved, a second lever pivotally mounted on the end of the firstmentioned lever, a roller on the free end of the second lever, and spring means for urging the roller toward the roll to yieldably hold the web against the roll.

7. In a gluing and sheeting machine, means for intermittently advancing a web to be gluedand sheeted, means for applying a line ot glue to one side oi the web as it is advanced, means traveling transversely o1' the web and movable into and'out of contact therewith for applying a transverse line of glue, means for adjusting the range of contact of the glue-applying means with the web to limit the lengths and positions of the lines of glue with respect to the web, and means for cutting a glued `sheet from the web.

8. In a gluing and sheeting machine, means for intermittently advancing -a web to be glued and sheeted, means for applying a line of glue to one side of the web as it is'advanced, means traveling transversely of the web for applying a transverse line of glue, and mounted for movement into and out of contact with the web, means for actuating said glue-applying means including cams, and means for adjusting said cams to vary the lengths and positions of the lines of gluing contact With respect to the Web.

9. In a gluing and sheeting machine, means for intermittently advancing a web to be glued and sheeted, means for applying a line of glue to one side of the web as it is advanced, means traveling transversely of the web for applying a transverse line of glue, and mounted for movement into and out of contact with the web, means for actuating said glue-applying means including cams, means for adjusting said cams to vary the lengths and positions of the lines of gluing contact with respect to the web, and means for reversing the action of the cams with respect to the glue-applying means.

10. In a gluing and sheeting machine, means for intermittently advancing a web to be glued and sheeted, means for applying a line of glue to one side of the web as it is advanced, means traveling transversely of the web and movable into and out of contact therewith for applying a transverse line of glue, and means for adjusting the range of contact of the glue-applying means with the web to limit the lengths and positions of the lines of glue with respect to the web.

11. In a gluing mechanism, means for advancing a web, a glue pot having a spout, a gluing disk having its periphery in close proximity to the spout and rotatably mounted upon an arm which is pivotally mounted with Arespect to the spout, the glue pot being pivotally mounted at a point remote from the disk torpormally holding the disk in closing contact with the spout, means for guiding the glue pot and disk in move- .ments across the face of the web, a runway in contiguous relation to said guiding means, and an element connected with the glue pot and adapted to travel upon said runway for tilting the .glue pot toward and from the web to eilect contact with the web and by relative movement of the glue pot and disk to open the spout for the discharge of glue and by reverse movement to close the spout.

12. In a gluing mechanism, a glue pot having a spout, means for imparting relative movements of the spout over the face o! a web, a gluing device normally standing in yieldable contact with the spout to close the same against the discharge of glue, and automatic means for moving the spout and gluing device toward and from the face of the web at predetermined intervals and adapted when the gluing device contacts the web, by additional movement of the spout toward the web, to cause withdrawal of the gluing device from contact with the spout to permit the discharge of glue.

13. In a gluing mechanism, a glue pot having a spout, means for imparting relative movements of the spout over the face of a web, a gluing device normally standing in yieldable contact with the spout to close the same against the discharge of glue, automatic means for moving the spout and gluing device toward and from the face of the web at predetermined intervals and adapted when the gluing device contacts the web, by additional movement of the spout toward the web, to cause withdrawal of the gluing device from contact with the spout to permit the discharge of glue, said automatic means including a runway having thereon a cam, and an element connected with the spout and adapted to travel upon said runway and cam.

JOHN A. HECKMAN.

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