US2216586A

US2216586A - Carton lining machine

Info

Publication number: US2216586A
Application number: US250703A
Authority: US
Inventors: George F Burton
Original assignee: PNEUMATIC SCALC CORP Ltd
Current assignee: PNEUMATIC SCALC Corp Ltd
Priority date: 1939-01-13
Filing date: 1939-01-13
Publication date: 1940-10-01
Anticipated expiration: 1957-10-01

Description

G. F. BURTON 2,216,586

CARTON LINING MACHINE Filed Jan. 13, 1939 2 Sheets-Sheet l INVENTOR BY 6041310 cm w ATTO NEY Oct. 1, 1940. G. F. BURTON CARTON LINING MACHINE Filed Jan. 13, 1939 2 Sheets-Sheet 2 ATTORN Y Patented Oct. 1, 1940 UNITED STTES PATENT cries CARTON LINING MACHINE Application January 13, 1939, Serial No. 250,703

8 Claims.

This invention relates to a carton lining machine.

The invention has for an object to provide a carton lining machine of the type in which a formed lining is inserted into a carton and in which provision is made for spreading the flaps of the carton prior to the insertion of the lining in a novel and improved manner whereby certain difficulties formerly encountered in prior carton lining machines may be eliminated and a more satisfactory lined carton produced.

With this general object in view, and such others as may hereinafter appear, the invention consists in the carton lining machine and in the various structures, arrangements and combinations of parts hereinafter described and particularly defined in the claims at the end of this specification.

In the drawings illustrating the preferred embodiment of the invention, Fig. 1 is a perspective View of a sufiicient portion of a lining machine embodying the present invention to enable the invention to be understood; Fig. 2 is a detail in side elevation, partly in cross-section, of one of the flap spreaders arranged to engage one of the end flaps; Fig. 3 is a detail view showing the fiap spreaders arranged to engage the side flaps of the carton; Figs. 4 and 5 are sectional views in plan and front elevations respectively of a portion of the carton transfer mechanism and showing the fiap spreader for the remaining end .flap of the carton; and Figs. 6 and 7 are detail views in front and side elevation respectively of the end flap spreader shown in Figs. 4 and 5.

In general the present invention in its preferred form comprises an improvement upon the carton lining machine illustrated and described in the patent to Hiller and Joplin, No. 13,037,005, dated August 27, 1912, and contemplates particularly an improvement in the fiap spreading mechanism of the machine. As shown in the Hiller and Joplin patent, the flaps were spread by a plurality of spring-pressed fingers, pivotally mounted upon a relatively fixed supporting member and in the operation of the machine, the fingers were spread by the engagement thereof with the end of the descending forming block so that when the forming block was withdrawn, the spreading fingers would be released, and in being released, the fingers would engage the extended sides of the unsupported lining and bend them inwardly in a manner such as to cause a partial collapse of the top of the lining. As a result of this partial collapse of the mouth of the lining trouble was experienced in the sub-' sequent operation of filling the-package at the filling or weighing machine in that some of the material at times fell between the lining and the carton. Difiiculty has also been. experienced at the top closing machine for closing the top of the lining.

Accordingly, the present invention contemplates a carton lining machine in which the flap spreader mechanism is constructed to be operated independently of the withdrawal of the carton forming block to the end that the spreader fingers may be held out of contact with the carton lining during the withdrawal of the forming block and thereby prevent collapsing of the mouth of the liner during such operation.

Referring now to the drawings, the present invention is illustrated as embodied in a machine for lining cartons, and except as to such details as are hereinafter pointed out, the illustrated machine may comprise any of the usual forms of carton lining machines now upon the market, reference being made to the patent to Hiller and Joplin, above referred to, as disclosing the details of construction and mode of operation of such prior art carton lining machines. Inasmuch as many portions of the'carton lining machine of themselves constitute no part of the present invention, it has been deemed sufficient to illustrate only such portions of the carton lining machine as will enable the present invention to be understood. As is generally known, and as illustrated in the above patent, these prior art carton lining machines are provided with means for feeding the lining material from a continuous web and in the operation of the machine, the lining is cut off to the proper length and positioned beneath a plunger or forming block 8. The lining blank is supported upon plates which are spaced apart sufficiently to permit the forming block to descend between them. As the forming block descends, it carries the lining blank down with it and past mechanism which operates to fold the blank around the block to form a lining bag thereon,

and, at the end of the descending stroke, the,

plunger deposits the lining formed thereon into a carton previously positioned beneath the block, whereupon the forming block is withdrawn leaving the lining within the canton.

Referring now to Fig. l, in the illustrated embodiment of the invention, the mechanism for spreading the top flaps of the carton prior to the introduction of the forming block and its lining is positioned beneath and in alignment with the forming block 8, and may comprise a plurality of pivotally mounted fingers, preferably four in number. As herein shown, one pair of spreader fingers I0, I2 for spreading the side flaps I 4, I6 respectively, are arranged to be simultaneously operated through mechanical means independently of any contact with the r'eciprocatory forming block 8.

As illustrated in Figs. 1 and 3, the spreader fingers I0, I2 are pivotally mounted in brackets I8, 20, which are fixed to vertical rods 22, 24 respectively. The vertical rods 22, 24 are mounted for vertical adjustment in a fixed part of the machine frame, not shown, but which may comprise a portion of the supporting bracket for the mechanism which wraps the lining blank around the forming block, as illustrated in the patent to Hiller and Joplin above referred to. As herein shown, each finger I0, I2 is provided with an arm 26, 28 respectively, and the fingers are arranged to be rocked, to spread the flaps, through connections from a cam 30 mounted on a cam shaft 34 of the machine through

bevel gears

36, 38, as illustrated. As herein shown, a lever 40, fast upon a rocker shaft 42, provided with a cam roller 44 cooperates with the cam 30 to rock the shaft 42. The flap spreading finger I2 is connected to the rocker shaft 42 by a lever 46 and connecting rod 48 which is operatively connected to the depending arm 28 of the finger I2. The opposed spreader finger 10 is connected to the rocker shaft 42 through connections including a lever 50, link 52, arms 54, 56, mounted upon an intermediate rocker shaft 58, and link 60 which is operatively connected to the upstanding arm 26 of the finger I0. The cam 30 is designed to operate the spreader fingers I0, I2 simultaneously, in timed relation to the operation of the reciprocative forming block 8 so that the flaps I4, I6 are spread out of the way of the forming block with its lining during the descending stroke of the latter, as illustrated in dotted'lines in Fig. 3. In operation, the fingers I0, I2 are retained in this position until the forming block 8 has been withdrawn and until the carton with its lining inserted has been transferred from the position illustrated in Fig. 1 to an outgoing conveyor, as will be described, whereupon the fingers are rocked to the full line position illustrated in Fig.

3, above the carton flaps, to permit a succeeding carton to enter into the lining receiving position as will be hereinafter described.

The remaining pair of

flap spreaders

62, 64 for spreading the

end fiaps

68, 10 respectively, are, as herein shown, constructed and arranged to be moved into and out of operative position with respect to the reciprocative forming block 8, by movable parts of the carton lining machine, and in the preferred embodiment of the invention such movable parts may comprise the carton positioning and transferring mechanism of the machine including the carton pusher I2 and the carton aligning and transferring pocket I4.

The flap spreading finger 62 is mounted upon andv arranged to be moved into and out of operative position during the operation of the machine by the pusher mechanism, and as herein shown, the finger 62 may be pivotally, mounted in an arm I6 secured to an upstanding rod I8 which is held in a bracket 88attached to the pusher plate I2. The finger 62 is provided with a spring I5 which tends to rock the finger upwardly or in an extended position in the path of. the reciprocatory forming block 8 as shown in full lines in Fig. 2. In the operation of the machine, the pusher plate I2 transfers the foremost carton in a line, formed on the incoming conveyor 82, and which has come to rest against a stop plate 84, from a position on the conveyor 82 into the aligning and transferring pocket I4, and in alignment with the reciprocative forming block 8. During this movement, the finger 62 is in its extended position and when the pusher comes to rest, the finger will be disposed in the path of the descending block so that when the block descends, the finger will be moved to the dotted line position illustrated in Fig. 2 to spread the carton fiap. Thereafter, when the lining has been inserted and before the block has been withdrawn, the pusher is retracted, carrying the finger laterally out of operative position with relation to the block so that when the block is withdrawn and the carton is transferred from its lining position, the finger cannot interfere with the extended sides of the lining when the finger returns to its extended position under the influence of the spring I5.

As hereinbefore stated, the pusher plate I2 is arranged to be reciprocated to transfer the foremost carton from the incoming conveyor 82 onto a supporting plate 86 and into the pocket I4 by which the carton is positioned directly beneath and in alignment with the forming block 8. As herein shown, the pusher plate I2 is attached to the end of a slide bar 90 which is mounted in a slide bracket 92 attached to the machine frame. The pusher I2 is arranged to be reciprocated in timed relation to the operation of the forming block 8 by a cam 94 mounted on the main cam shaft 34, through connections including a twoarmed lever, one arm 06 of which is provided with a cam roller 98 cooperating with the path I80 of'the cam 94. The second arm I02 of the two-armed lever is connected by a link I04 to a lever I06 fast on a rocker shaft I08. A second lever IIO, also fast on the rocker shaft I08 is connected by a link II2 to the slide bar 90 upon which the pusher plate I2 is mounted. Thus, during the operation of the machine, the finger 62 is carried into and out of operative position with respect to the reciprocatory block 8.

The remaining flap spreader 64, for spreading the end flap I0 is mounted to be moved into and out of operative relation to the reciprocative block 8 by the engagement of the transfer pocket I4 during the movement of the latter to and from a position in alignment with the forming block and a position over an outgoing conveyor II4 where the lined carton is released and by which 1 successive cartons are delivered from the machine. As herein shown, see Figs. 6 and '7, the finger 64 is pivotally mounted in an arm II6 fast on a vertical rod I I8 which is mounted in a hub I20 pivotally mounted on the shaft I22 supported in a bracket I24. A spring I26 normally tends to hold the rod I I8 in a vertical position up against a stop screw I28 so that the finger 64 is held out of the path of the reciprocative block and in the position illustrated by full lines in Fig. 6. The finger 64 although pivotally mounted is frictionally held in any position to which it is moved by a spring I30 which urges the finger against friction washers I32. In order to rock the hub I20 to present the finger in operative position to spread the flap 10, the hub I2 is provided with an extension I34 which carries a clamping member I36 to which a contact rod I38 is fixed. The contact rod I38 is normally disposed in the path of the transfer pocket I4 so that in operation, when the pocket is moved to lining position, the side wall I of the pocket engages the contact finger and rocks the unit to present the finger in operative position as shown by full lines in Fig. 5. Thereafter, when the block 8 descends, the end of the block engages the finger and moves it to the dotted line position illustrated in Fig. 5 to spread the flap '10. The finger remains in this position until the lining has been inserted and the block fully withdrawn and until the pocket is moved whereupon the unit will be rocked back to its vertical position by the spring I26. During its return movement the finger 64 is arranged to be reset to its extended position, as shown in Fig. 5, and for this purpose, the finger is provided with a tail piece I42 which is arranged to engage a stationary resetting member I 44 which is fast in the bracket I24.

The carton aligning and transferring pocket I4, as herein illustrated, is mounted upon a slide member I slidingly mounted in a bracket I52 attached to the machine frame. The pocket is arranged to be reciprocated in timed relation to the movement of the forming block 8 by a cam I54, mounted on the cam shaft 34, through connections including a cooperating cam roller I55 carried by one arm I58 of a bell-crank, the second arm I60 being connected by a link 162 to the slide member I50. One of the side walls, I64, of the pocket I4 is hinged and provision is made for rocking the side I64 to release the carton onto the moving belt I I4 during the transferring operation and, to this end, an arm I68 extending from the hinged wall I64 is provided with a cam roller I10 which is arranged to engage a stationary cam piece I12 mounted on the slide bracket I52 as clearly shown in Fig. 4. A spring I14 normally holds the pivotally mounted wall IE4 in its closed or carton engaging position. Thus, during the operation of the machine, the flap spreader finger 64 is moved into and out of operative position by the movement of the transfer pocket I4.

From the description thus far, it will be observed that none of the flap spreading fingers are dependent for their operation upon the withdrawal of the forming block 8 and that the fingers are either removed from operative position or held out of engagement with the extended top of the liner until the lined carton has been removed from lining position so that the extended top of the liner cannot be collapsed by the resetting movement of the fiap spreader fingers thereby producing a lined carton having the extended sides disposed vertically and in a condition more 55 suitable for the subsequent operations of filling and closing the lining top.

While the preferred embodiment of the invention has been herein illustrated and described, it will be understood that the invention may be embodied in other forms within the scope of the following claims.

Having thus described the invention, what is claimed is:

1. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, and means for spreading the flaps of the carton to permit the block with its lining to enter comprising a plurality of pivotally mounted fingers, means for rocking the fingers to spread the flaps, and means for resetting the fingers to operative position for spreading the flaps of a succeeding carton, said resetting means being operated independently of engagement with said block during the withdrawal of the latter whereby to prevent interference with the extended top of the lining by said. flap spreading fingers during the resetting of the latter.

2. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, carton moving means including means for positioning a carton in alignment with said forming block, means for subsequently removing the lined carton from operative position with relation to the forming block, and means for spreading the flaps of the carton to permit the block with its lining to enter comprising a plurality of pivotally mounted fingers, means for rocking the fingers to spread the flaps, and means for resetting the fingers to operative position for spreading the flaps of a succeeding carton, said resetting means being operative after the lined carton has been removed from operative position with relation to said forming block.

3. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, carton moving means including means for positioning a carton in alignment with said forming block, means including a movable pocket for subsequently removing the lined carton from operative position with relation to the forming block, and means for spreading the flaps of the carton to permit the block with its lining to enter the carton comprising a plurality of pivotally mounted fingers, one for each fiap, one of said fingers being carried by said carton positioning means and adapted to be moved out of operative position with relation to said forming block before the withdrawal of the latter, the opposed finger being mounted upon a movable support adapted to move said opposed finger into and out of operative position with said carton flaps by the engagement of said movable pocket, and means for operating the remaining pair of opposed fingers including a cam, designed to reset said remaining fingers after the removal of the lined carton from operative position with relation to the forming block.

4. A carton lining machine having, in combination, a reciprocatory forming block about which the lining is formed, a support for the carton, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, carton moving means including means for positioning a carton in alignment with said forming block, means including a movable pocket for subsequently removing a lined carton from operative position with relation to the forming block and means for spreading the flaps of the carton to permit the block with its lining to enter the carton comprising a plurality of pivotally mounted fingers normally extended horizontally above the top of the oarton flaps and adapted to be moved to spread the flaps during the descent of said forming block to insert the lining and to be reset to operative position for spreading the flaps of a I succeeding carton after the removal of the lined carton from operative position with relation to said forming block.

5. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton and means for spreading the flaps of the carton to permit the block with its lining to enter the carton comprising a plurality of pivotally mounted fingers normally extended horizontally in a position above the top of the carton flaps, at

least one of said fingers being yieldingly mounted and arranged to beoperated by engagement with the forming block during its descending stroke, and means for moving said one finger out of operative position with relation to said block prior to the Withdrawal movement of the latter whereby to prevent said one finger from collapsing the extended top of the lining after said forming block has been withdrawn.

6. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, and

means for spreading the flaps of the carton to permit the block with its lining to enter the carton comprising a plurality of pivotally mounted fingers normally extended horizontally in a position above the top of the carton flaps, at least one of said fingers being yieldingly mounted and arranged to be operated by engagement with the forming block during its descending stroke, a horizontally reciprocated member upon which said one finger is mounted, and means for reciprocating said member adapted to move said finger into operative position during the descending stroke of said block and to withdraw said one finger prior to the withdrawal movement of the block whereby to prevent interference with the extended top of the lining by said one finger during its return to its normal horizontally extended position.

7. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently Withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, carton moving means including means for positioning a carton in alignment with said forming block, means including a movable pocket for subsequently removing the lined carton from operative position with relation to the forming block, and means for spreading the flaps of the carton comprising a plurality of pivotally mounted fingers normally extended horizontally in a position above the top of the carton flaps, at least one of said fingers being frictionally mounted and arranged to be rocked to spread its carton flap by engagement with the forming block during its descending stroke, a movable support for said one finger adapted to move the latter into and out of operative position with relation to said block by engagement with said movable pocket, and means for resetting said one finger to its horizontally extended position during its movement out of operative position with relation to the block.

8. A carton lining machine having, in combination, a reciprocatory forming block about which a lining is formed, means for reciprocating the forming block to deposit the lining in the carton and to subsequently withdraw the block therefrom leaving the top of the lining extending above the score line of the carton, and means for spreading the flaps of the carton to permit the block with its lining to enter the carton comprising a plurality of pivotally mounted fingers normally extended horizontally in a position above the top of the carton flaps, at least one of said fingers being frictionally mounted and arranged to be rocked to spread its carton flap by engagement with the forming block during the descending stroke of the latter, a movable support for said one finger, means for moving said support to present said one finger into and out of operative position with relation to said block, and means for resetting said one finger during its movement out of operative position with relation to said block.

GEORGE F. BURTON.