US1786477A - Blank-separating mechanism - Google Patents

Description

Dec. 30, 1930. H. CARLE 1,786,477

BLANK SEPARATING MECHANISM Original Filed Oct. 18, 1926 s Sheets-Sheet 1 n nun mu I \\II Dec. 30, 1930. CARLE 1,786,477

BLANK S EPARAIING MECHANI SM Original Filed Oct. 18, 1926 3 Sheets-Sheet 2 lllllllIlllllllllfllllflllllllllllll Dec. 30, 1930. H. CARLE 1,786,477

BLANK SEPARATING MECHANISM Original Filed Oct. 18, 1926 3 Sheets-Sheet 5 Patented ea. 3, 193

HAROLD CABLE, F BUFFAICO, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TQ VORTEX CUP COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE BLANK- SEEARATING MECHANISM Original application flied October 18, 1926, Serial No. 1928. Serial This invention relates to an improved blank separating mechanism, and 1s a division of my copending applications for patcut for a flat bottom cup making machine, filed Oct. 18, 1926, U. 8. Serial No. 142,370.

The present invention pertains to a blank separating attachment for use in connection with paper cup making machines, and provides mechanisms whereby cup blanks are adapted to be individually separated by pneumatic means from the top of a stack of blanks carried in an improved blank holding magazine provided with an adjustable bottom and with adjustable guides to permit a stack of blanks to be raised by resilient means governed by the operation of a Geneva gear mechanism.

It is an object of this invention to provide an improved blank carrying magazine attachment for paper cup forming machines, said attachment consistin of a false bottom for supporting a stack of lanks between adjustable guides according a restricted passage for the upward movement of the stack of blanks when an eccentric latch mechanism is released to permit resilient means to raise the false bottom and the stack of blanks a predetermined amount each time a blank is removed from the top of the stack.-

It is also an object of this invention to provide a cup making machine with a magazine having an adjustable blank supporting bottom adapted to automatically raise cup blanks into a position to permit. the uppermost blank to be pneumatically gripped by a transfer block which is adapted in turn to be automatically moved at a predetermined time to cause the gripped blank to be transferred into a machine adapted to form the blank into a cup.

It 'is an object of this invention to provide a blank holding magazine adapted to be connected with and operated from a cup forming machine, and furthermore affording a convenient means whereby a stack of blanks are adapted to be raised into a position by spring means each time a Geneva gear controlled eccentric latch device is released to ermit the uppermost blank of the stack to e gripped by a separating device provided 142,370. Divided and mi application filed June at, No. 288,039.

forthe purpose of transferring the separated blanks one at a time into the cup forming machine."

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

llhis invention (in a preferred form) is illustrated in the drawings and'hereinafter more fully described.

On the drawings:

Figure 1 is a fragmentary top plan View of a cup forming machine equipped with an improved blank separating and feed mechanism forming the subject matter of this invention.

Figure 2 is a fragmentary elevational view of the blank carrying mechanism taken on line IIH of Figure 1. I

Figure 3 is a vertical front view of the blank magazine and feed mechanisms taken on line IIIIU of Figure 1.

Figure 4 is a fragmentary detail view of the Geneva gear control mechanisms taken on line IVIV of Figure 2.

igure 5 is an enlarged top plan view of the blank carrying magazine with the blanks removed.

Figure 6 is a side elevation of the blank carrying magazine taken on line V1Vl of Figure 1.

Figure 7 is a fragmentary detail section taken on line VII-W711 of Figure 5.

Figure-8 is an enlarged fragmentary detail section taken on line VIHV1[H of Figure 2, with parts shown in elevation.

As shown on the drawings:

The present invention relates to a blank holding magazine used in combination with ,a pneumatic blank separating device, both of which form a part of an improved cup making machine. The machine originally consists of a table or platform 1 supported on a suitable framework. Supported above the table 1, is a rotatable spider or turret wheel 2, connected to be driven from the driving unit of the machine, and having rotatably supported thereon, a plurality of formers or mandrels 3. Associated with the platform 1, is a bottom blank punching and feed mechanism represented as a whole by the reference numeral 4, and provided for the purpose of punching and feeding cup bottoms to the mandrels 3.

Rigidly secured to the front right-hand corner of the platform 1, is an extension board or table 5, above which a blank feed arm device 6 is mounted for delivering adhesived blanks to the forming mandrels 3. An adhesive supply mechanism is supported above the table 5 in coacting relation with a pneumatic blank transfer block 7 connected with control means operable from the machine to cause the pneumatic block 7 to be swung over a body blank magazine. The pneumatic transfer block 7 has a pneumatic control mechanism represented as-a whole by the reference numeral 8 connected therewith, to cause a suction action to take place in the block when over the magazine, and furthermore cause a vacuum or suction action in said block to be broken or released after the trans fer block has moved into a position over the adhesive supply device and the feed arm 6. The pneumatic transfer device, the adhesive applying mechanisms, and the adhesived blank feed arm device have been illustrated and described in detail in applicants earlier applications hereinbefore referred to, so that it will be unnecessary to go into a detailed description of these parts in the present application.

The blank feeding mechanism embodying the principles of the present invention will now be described in detail. Positioned adjacent the front edge of the table 5, is a magazine supporting post or sleeve 9, having an integral arm 10, which is rigidly secured to the upper surface of the table 5. Mounted upon the upper end of the sleeve 9 is a flat plate or head 11, to which a magazine base plate 12 is rigidly fastened.

Secured upon the top of the baseplate 12 are a plurality of stationary guide arms 13 and a pair of adjustable guide arms 14, which are adjustable in guide slots 15, provided in the base plate 12. Also mounted upon one corner of the base plate 12 is a stop arm 16 which is slightly higher than the drive arms 13 and 14, and carries an adjustable stop screw 17 The screw 17 serves as a stop to limit the swing of a cup blank transfer frame 18 forming a part of the blank supporting or transfer mechanism connected with the pneumatic block 7.

Each of the blank guide arms 13 and 14 is provided with a smooth liner plate 19 fastened at the lower end to the respective guide arms, and having the upper end free to be adjusted by means of ,a set screw 20. The liner plates 19 serve to control the upward movement of a blank supporting plate 21 by the frictional engagement between the stack of blanks;22 and said liner plates 19.

The upper ends of the liner plates 19 are adapted to be deflected inwardly by the screws 20 to form a restricted passage for the upward movement of the stack of blanks.

Positioned above the magazine base plate '12 is a movable false bottom or cup blank supporting plate 21, which is shaped as illustrated in Figure 5, to slide upwardly and downwardly between the guide arms 13 and 14. The false bottom is adapted to carry the stack of cup blanks 22 which are of segment shape as illustrated in Figure 1. The blank carrier plate 21 is secured upon the upper end of a post or rod 23. A pin 24 (Figure 3) projects from the post 23 and slides in a longitudinal slot 25 provided in the sleeve 9. The post 23 is slidable through the sleeve 9 and passes upwardly through an opening 26 in the base plate 12. Connected to the lower end of the post 23 is one end of a control spring 27, the upper end of which is secured to the bottom of the table 5, and normally acts to raise the blank carrier plate 21 and the stack of cup blanks carried thereon to permit the uppermost cup blank in the stack to be delivered against the bottom of the blank transfer block 7 when the same is positioned over the magazine.

Secured around the post 23 is a collar or I sleeve 28 having a slot in one side thereof to permit an eccentric disc 29 to coact with the;

post at predetermined times to pull the same downwardly against the action of the spring 27. The disc 29 is supported on a stub shaft 30 carried by a pair of brackets 31 fixed on the sleeve 28. Fixed on one end of the stub shaft 30 is a crank arm 31 to which one end of a connecting link 32 is pivotally connected (Figure 6).v The other end of the link 32 is pivoted to a toggle arm 33 which slidably projects through a slot 34 formed in a guide bracket 35 secured to the table 5.

A pin 36 projects through the slot 34 and serves as a fulcrum for the free end of the toggle arm 33. The second end of the toggle arm 33 is pivoted to one end of-a crank arm 37, the other end of which is fixed on one end of a shaft 38 j ournaled in bearing brackets 39 and 40, supported on the table 5. Se-

cured on the shaft 38 adjacent the bearing to one end of a connecting rod 42 having a turnbuckle 43 intermediate the ends'thereof to permit adjustment of the connecting rod. The other end of the connectingrod 42 is pivoted to a crank arm 44 (Figure 4) secured on a shaft 45. journaled in a bearing bracket 46 supported beneath the table 1. A Geneva gear 47 is fixed on the shaft 45 and coacts with a Geneva gear 48 fixed on a cam shaft 49 to receive a drive therefrom. The cam shaft 49 is connected to receive a drive from the cup forming machine.

From the cup blank carrying magazine the blanks 22 are adapted to be removed one at a time from the top of the stack. This operation is performed automatically at predetermined times by means of the blank transfer mechanism 7 which is operable from the drivmg mechanisms of the cup forming machine, while the suction operation thereof is go verned by the pneumatic control mechanisms 8. A detailed description of the pneumatic blank transfer block 7 the blank transfer frame 18, and the pneumatic control mechanisms 8, are omitted since they have been sufiiciently described in applicants earlier applications for patents hereinbefore referred to.

The operation is as follows:

In connection with the detailed description of the blank holding magazine mechanism comprising one of the attachments of a cup forming machine, a brief description of the operation of the improved blank feeding and separating mechanism will now be given. When the machine is started by operating a control lever or the like, a drive is transmitted from the machine to the blank feeding mechanisms.

The cup blanks 22 are supported in the magazine upon the false bottom 21 which is adapted to be raised by the action of the spring 27 to position the uppermost cup blank against the bottom of the blank transfer block 7 and the blank transfer frame 18. The false bottom 21 is held in place by the frictional engagement of the edges of the stack of blanks with the liner plates 19. The uppermost cu blank 22 is now adapted to be removed rom the top of the stack due to the suction action created in the pneumatic block 7 by the pneumatic control mechanisms 8. The blank transfer block 7- is adapted to be swung at a predetermined time from the position illustrated in Figure 1 into a position over the magazine, limited by the .contact of the transfer frame 18 with the stop screw 17 on the stop arm 16. The block 7 is moved over the magazine in time to permit the uppermost blank 22 to be moved into engagement with the bottom of the pneumatic block 7 when the magazine bottom 21 is raised. At this stage in the operation, the pneumatic control mechanism 8 is actuated from the machine to exhaust the air from the block 7, thereby causing the uppermost blank in the magazine to be gripped by suction to the under face of the blank transfer block 7. The control mechanisms connected with the pneumatic transfer block are now set in operation to swing the blank transfer block 7 back into the position illustrated in Figure l. The gripped blank 22 is thus transferred from the top of the stack of blanks in the magazine into a position ready to have adhesive a plied thereto before the blank is fed to a orming' mandrel 3 of the cup forming machine.

I am aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

I claim as my invention:

1. In a machine of the class described, the combination with a blank transfer mechanism, of a blank magazine mechanism comprising a base section, a plate movably supported thereon, uprights secured on said base section to the outside of said plate, and to the outside of a stack of cup blanks supported on said plate, resilient guide strips secured to the inner faces of said uprights, means for adjusting said guide strips to form a restricted passage through which the stack of cups is adapted to be moved, resilient means for raising the plate and the stackiof blanks thereon to cause the uppermost blank to be moved into engagement with said transfer means, control means for. holding the blank supporting plate in a stationary position against the action of said resilient means, release mechanisms connected with said control means, and gear mechanisms for automatically operating said release mechanisms at predetermined times.

2. In a cup making machine of the class described the combination with a blank transfer mechanism, of means for operating said blank transfer mechanism, a magazine base supported on the machine, a post slidably mounted in said base, aplate supported on the upper end of said post adapted-to have a stack of blanks mounted thereon, resilient guides on said base between which the stack of blanks and said plate are adapted to be raised to move the uppermost blank into engagement with said blank transfer mechanism, a spring connected with said post for raising the same, an eccentric latch coacting with said post, control mechanisms connected with said eccentric latch to hold the same in latchingengagement with said post against the action of said spring, and a Geneva gear mechanism operated from the machine and adapted to automatically actuate said control mechanism to permit theplate and the blanks thereon to be raised a predetermined amount by said spring with the removal of each blank by said transfer mechanism.

8. In a machine of the class described, the combination with a blank transfer device, of a vertically adjustable support adapted to carry a stack of blanks thereon, resilient means for elevating said support and the blanks thereon, to move the uppermost blank into a position ready to be removed by said transfer device, eccentric means for holding the support against movement by said resilient means, link mechanisms connected with said eccentric means, and Geneva gear mechanisms operated by the machine and connected with said link mechanisms to actuate the same at predetermined times to release the eccentric means each time a blank is removed from said support by said transfer device.

4. In a machine of the class described, the combination with a magazine base section, of an adjustable support for carrying a stack of blanks, guides on said base section, adjustable resilient members on said guides aflording a restricted passa e for the upward movement of said stack 0 blanks, eccentric latch means for holding the adjustable support against upward for raising said adjustable support and the blanks thereon, and control mechanisms for automatically releasing said eccentric latching means at predetermined times to permit saidresilient means to elevate the adjustable support and the blanks thereon.

5. In a machine of the class described, the combination witha magazine, of a plate movably mounted therein and adapted to carry a stack of blanks, resilient liner plates in said magazine, means for adjusting 'said liner plates to form a restricted passage for said stack of blanks, a spring for raising said plate, a cam latch mechanism for holding said plate against upward movement by said spring, and control means for releasing said latch mechanisms at predetermined times to permit the spring to raise the stack of blanks upwardly between said resilient liner plates.

6. In a machine of the class described, the combination with a magazine base section having an opening therein, a post slidably mounted to project upwardly through said opening, a plate supported on saidpost to carry a stack of blanks, adjustable guides on said magazine affording a restricted passage for the upward movement of said stack of blanks, an eccentric latch coacting with said post, a spring connected with said post to cause .upward movement of said plate and said stack of blanks when the eccentric latch is released, and Geneva gear mechanisms governing the operation of said eccentric latch to permit the resilient means to raise the plate at predetermined times to elevate the stack of blanks.

7. In a machine of the class described, the combination with a transfer device, of an adjustable support adapted to carry a stack of cup blanks, a spring for raising said adjustable support to move theuppermost blank into engagement with said transfer device, adjustable resilient guides afiording a restricted passage for the upward movement of said adjustable support and the blanks carried thereon, a latch mechanism for restricting the upward movement of said adjustable support, and gear control means for automatically releasing the latch mechanism at predetermined times to permit raising of the stack of blanks a predetermined distance each time a blank is removed from the top of said stack.

In testimony whereof I have hereunto subscribed my name at Buffalo, Erie County,

New York.

movement, resilient means HAROLD CABLE.

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