US1627920A

US1627920A - A cokporatton

Info

Publication number: US1627920A
Authority: US
Publication date: 1927-05-10
Anticipated expiration: 1944-05-10

Description

ay 7 M. .1. MILMOE BLANK FEEDING MECHANISM 6 Sheets-Sheet 1 Filed Dec.

IQYVENTOR.

BY 3 @(M ATTORNEYS.

y M. J. MILMOE BLANK FEEDING MECHANISM ill 6 Sheets-Sheet 2 [LU] u 11 II I n u I! n u I! u M INVENTOR.

BY W y ATTORNEYS.

May 1927' M. J. MILMOE BLANK FEEDING MECHANISM Filed Dec. 1925 6 Sheets-Sheet 3 A TTORNEYS.

LO g IN VENTOR.

ay 7 M. J. MILMOE BLANK FEEDING MECHANISM Filed Dec. 1925 6 Sheets-Sheet 4 INVENTOR. ,9. (Ma 14M BY V d (7 (044 M A @M ATTQRNEYS.

May 10,1927. -i,627,920

M. J. MILMOE BLANK FEEDING MECHANI SM 6 Sh ats-Sheet 5 By 0 1/1444 sr A TTORNEYS.

May 10,1927. M. J. MIL-MOE BLANK FEEDING MECHANISM Filed Dec. 12, 1925 s Sheets-Sheet 6 INVEN TOR.

A T TORNEYS.

Fatented May 10, 192?.

UNETE STA"? ii ei'l MICHAEL 3'. MILHOE, 3F CHICAGQ, ILLlINOIS, ssslon'on TD 1. B. CUE;- IANY, OF CHICAGO, ILLINOIS, CORZORATIOE? GE ILLINOIS.

BLANKFEEDING MEGEANISLYI.

.Appl'ioatic-n filed December 12, 1925.

This invention relates to mechanism for feeding blanks or. sheets and is especially adapted to feed carton blanks to mechanism for forming the blanks into cartons.

' -The,ob 'ect of the invention is to provide a sheet. feeding mechanism which will be accurate. andreliable in its operation, which will be of improved construction, and which will operate on blanks of irregular shape.

. The invention is exemplified in the convination and arrangement of parts shown in the accompanying drawings and described in the following specification, and it is more particularly pointed out in the appended claims. 7

In the drawings,

Fig. l is a top plan view of a blank feed ing mechanism embodying one i'orn'i oi? the present invention. 4

Fig. '2 is side elevation of the mechanism shown in Fig. 1.

Fig. 3 is a top plan View of a detail of construction.

Fig. 4 is an end elevation of the parts shownin'Fig. 3.

Fig: 5 is a rear elevation of the me hanism shownin Figs. 1 and Fig. (3 is a vertical section' substantially on line 6G .of Fig. 1. I

Fig. 7, is an elevation of the mechanism for separating the blanks from the bottom of the stack.

Fig. 8 is an elevation of a detail of constructi'on.

Fig 9 is a top plan View of a'portion of the. mechanism including the stripper- Fig. 10 is an elevation of a carton blank for which the embodiment of the invention shown in the drawings is adapted.

In my, prior application Serial No. 410,4.O1 I have shown a form of carton forming and tilliug mechanism to which un folded carton blanks are supplied, the blanks Serial No. $1,969.

The mechanism as shown in the drawings is upported on a frame 11, which maybe th rear end ot the frame of a carton 'fOIiTr in and filling machine. The machine is l r vided with a main drive shaft 12, which operates a sprocket chain 13 extending upwardly to asprocket Wheel 14 on a jack shaft 15. The shaft 1.5 is provided with a bevel gear 16, which meshes with a cooperating gear 17 on a shaft 18 eXtendingtransverselv of the machine and arranged to drive parts of the blank feeding mechanism. The blanks as shown at 19, Fig. 10, are-irregular in shape comprising a. longitudinal strip and flaps disposed at opposite sides thereof. The blank is folded into theforrn of carton by folding on the transverse lines 20. The flaps are then in position to form closures for the ends of the cartons.

The blanks are held in a magazine com ising

end walls

22 and 23 which are provided with supporting strips 24 and 25, respectively, which are bent "inwardly at. their lower edges to form supporting flanges or ledges 26 and 27. The ends oflthe cartons rest on the ledges 26 and 27, and forwardly pro ecting flaps 2 engage an inclined plate 29 supported on bracket 30 extei'id'ing for-- wardly from the side Wall 22. 'Tlie are bent. slightly upwardly and the lower edge of the plate 25) terminates above the

ledges

26 and 27, so that the l'mverrnost flap-s will pass the lower edge of theplate IX suction head 31 is arranged to engage the l rearwardly extending ii: p 32 of the lowermost carton blank and draw it downwardly away from the other blanks, as shown [in F'g. 7. on the end of an arm ha 'iug an airduct 34; extending longitudinally thereof. The

head 31 is provided with a transversec vlindrical passage 85 having a rotary valve 36 disposed therein. A passage.

being carried to the carton "forming ineehafrom the cylindrical opening 35 tothe connism by a conveyor upon which they are placed by lizind. The present invention is designed especially to cooperate with the carton forming mechanism'shon'n in the aforementioned a 'iplication. and is arranged to supply the hla lrs automatically to the form ing mechanism. It will be understood, how ever. that the invention not limited to the particular machine to which the blanks are fed.

the head 2 tact surface of the head. The rotary valve 36 has cut-away portions 38 and 39 (in-opposite sides thereof arranged to connect the This suction headis formedrigidly 37 extends passage 37 alternately with the air. duct and with a vent opening 10. An arm 4]. is connected to the end of the valve 36 and 1s provided with a pin iiextending into a cam shaped opening; i in a plate it. \Vhen upwardly to engage will be connected to the air duct 34 by means of the port 39. As the arm 33 swings downwardly the pin 42 will strike the lower edge of the cam opening 43 and rotate the arm 41 into the position shown in Fig. 8, so that the port 38 will connect the opening 37 with atmosphere through the port 40. The arm 33 is connected at its end opposite the suction head 31 to a rock shaft 45, which is rovided with a central duct 46 communicatmg with the air duct 34 in the arm 33. The rock shaft 45 extends through a suction chamber 47 and forms a tight connection with the walls of the chamber; The duct 46 is provided with an opening into the suction chamber 47 throu h a pipe line 48, which communicates wit a pump 49. The rock shaft 45 projects from the side of the suction chamber 47 and carries an arm 50 having a cam roller 51 thereon,-which travels in a cam groove 52 in a wheel 53. The wheel 53 is mounted on the shaft 18 so that rotation of the shaft will "osciliate the arm 33 and move the suction head 3111p and down. \Vhen the suction head is raised it will engage the lower face of the lowermost carton blank and on the return movement will draw the flap 32 downwardly into-3'tlie position shown in Fig. 7. Before the suction is released by the v lve 36 a stripper will be moved between t e upper face of the lowermost carton blank and the other blanks in the stack. This stripper comprises a pair of spaced plates 54 and 55, shown more clearly in Figs. 0 and 9. These plates are supported on the swinging frame 56 having forwardly extending

ribs

57 and 58 for supporting the plates 54 and 55, respectively. The frame 56 is supported on a pair of

pins

59 and 60, which are journnled in bearings 61, 62, 63 and 64 extendingupwardly from the frame 56. The pin 59 is supported on a rocker frame 65 comprising a. iair of arms 66 and 67 connected by cross bars 68 and pivoted at their lower ends on a shaft 69 supported by brackets 70 mounted on the frame 11. The shaft 60 is.carried on an arm 71 journaled at '72 on the bracket 70. It will be seen that the frame 65 and the, arm 71 provide a parallel movement for the stripper frame 56. The frame 65 is oscillated by a link 73, which is connected at 74 to the frame 65 and at 75 to an arm 76. The arm 76 is pivotally mounted at 77 on the frame of the machine and is provided with a cam roller 78, which engages a cam groove 79 on the cam wheel 80 mounted on the shaft 18. Rotation of the shaft 18 oscillates the arm 76. which motion is transmitted through the link 73 to the frame 65 and stripper frame 56. The link 73 is adjustable to permit adjustment of the position of the stripper frame. The stripper will move forwardly from the. position shown in Fig. 7 and will engage the upper surface of the carton blank, extracting the carton from the magazine and carrying it downwardly beneath the plate 54 until the stripper plate has reached the position shown in Fig. 6.

In order that the lowermost carton may be easily extracted from beneath the other cartons in the stack it is desirable to lift the stack of cartons at the time that the lowermost carton is extracted. This result is secured b means of a pair of lifters comprising sli e bars 81 and 82. These bars are provided with

grooves

83 and 84, which slidably engage pins 85 and 86 on supporting

brackets

87 and 88 respectively. The lifters are provided with nose pieces 89 and 90 arranged to extend beneath the edges of the carton blanks. The lifter 81 is in the rear of the lifter 82 for the reason that the lifter 81 engages the rearwardly projecting end flaps while the lifter 82 is positioned in registration with the edge of the main body portion of the carton. The lifter 89 carries a roller 9.1 arranged to engage the upper edge of a cam plate 92 supported on the rib 57 of the stripper frame 56. In like manner the lifter 82 is provided with a roller 93 arranged to engage a cam plate 94 on the supporting rib 58. As the strlpper frame swings forwardly the cam plate will carry the lifter forwardly against tie rear edge of the carton and the rollers will travel on the upper faces of the cam platesto. lift the cartons and free the lowermost blank so that it may be withdrawn from the ledges26 and 27. The lifters 81 and 82 are provided with cam faces 95 and 96, which engage cooperating fixed stops 97 and 98 to swim the lifters forwardly as they are raised by the cam plates.

A reciprocating slide is provided for receiving the carton blanks as they are extracted from the magazine and for moving them forwardly into positionto be engaged by the carton forming mechanism. This slide comprises a bar 1.00 having a longitudinal groove provide-I; with rack teeth 101 for meshing with a gear 102. The gear 102 is mounted on a sh;.1ft1O3, which carries a pinion 104 meshing with a rack 105. The rack 105 is provided with a cam fork 106 at its lower end which engages the drive shaft 12 and which carries a cam when 107 engaging a cam groove 108 in a cam wheel 109 secured to the shaft 12. By this mechanism reciprocation is imparted to the bar 100. A plate 110 is secured to the rear end of the bar and carries a pivot pin 111 having a forwardly extending arm 112 mounted thereon. The forward end of the arm 112 is provided with a cross piece 113 The

blades

114 and 115 underlie the plates 54 and 55, respectively. A link 116 is pivotally connwged at 117 to the arm 112 and the lower d d, of the link is provided on the lower'end oi the arm 67 of the frame (35. Vlhen the'frame is swung rearwardly the'pin l-l9 will engage the upper end of the slot 118 and raise the arm i712 and the

blades

114 and 115 into. the position shown in Fig. 7. The blades will be irictionally retained in this position by friction clamp shown more clearly in Figs. 5; and 4. This clamp comprises a bracket 120 mounted on the frame plate 121. A pair of ears extend laterally from the bracket 120 and a jaw member 123 is pivotally mounted at 124 between the ears 122. A vspring 1*2-3 closes the upper end of the jaw member against the arm 112 and clamps the arm between" the jaw member 123 and an upwardly projecting flange 125 on the bracket- 120. This will retainthe

blades

114 and 115 in their uppermost position until they are forced downwardly by the pressure of the stripper against the extracted carton blank In this way the blades serve to support the blank against the lower face of the stripper and prevent displacement of the blank during its downward movement from the lowerend of the stack. The rack 109 remains stationary during the downward movement oi the blades. This movement will position the rear edge of the carton in front of the forward ends of a pair of fingers 126. These fingers are supported on a transverse. plate 127 secured to the front ed act the plate 110. When the carton blankas been moved a stack of blanks, a suction head for engaging a projecting portion of the lowen most blank of the stack and tor moving said projecting portion downwardly, a stripper a rranged to enterthe spaee between the said projecting portion and the-remaining blanks in said magazine to extract said blank froin said magazine, and a litter operated by said stripper to raise the remaining blanks in aid magazine to permit said lowermost blank to be easily withdrawn irom said suport in; l dges.

2. Blank feeding mechanism comprising a support for a stack of blanks a suction head for en aging the lower face of the bot tom blank in said stack, a pivoted arm for i i l 3 I l V uppoitmg Hilfl sin-tron ne in nead navin; a contact directed laterally relative to said arm to engage said blank when said ating: lever to more said valve when said head is swung by said arm.

3. Apparatus for feeding blanks compr1singa support for a stack of blanks, a suction head for engaging the blanks in said slack, means for moving said head toward and from said stack, a valve for controlling the operation of said head; an arm connected with said valve, and extending transversely of the direction of movementof said arm, and a stationary cam for engaging said arm to operate said valve-when-said head is moved relative to said stack, said cam having opposed abutment portions between which said arm oscillated by the movc mr-nt of said head. i

4. Apparatus for feeding lanlrs comprising a support for a stack of blanks 'to he fol a suction head for engaging the blanks in said stack, a pivoted arm for supporting said suction head having an air duct communicating with said suction head, a spindle on nfhich said arm is mounted having an air duct therein communicating with the duct in .said arm, an exhaust: chamber through which said spindle passes, the air duct ineaid spindle communicating with the interiorof said exhaust chamber, and means for exhausting air from said cxhaust chan'lber:

5. Apparatus for feeding blanks compris-i ing :1 support for a stack of blank's'to be led, a suction bend fmtcngaging the blanks in said support. an arm for sup .orting said Suction head having an air (uct therein communicutmg with saidhead, a valve for controlling the passage of air through Said air duct a spindle on which said arm lS mounted having an air duct therein com an exhausVc-hamber into which said" spindle extends and with which the air duct in'said spindle communicates, means for exhausting air from-said exhaust chamber; means for swinging said arm about the axis of Said spindle. an operating lever connected with said valve, and a stationary cam for engagin said operating lever to operate said municatingrwith the air duct in said arm,

till

blank and the other blanks in the stack and for moving said plate transversely of the plane thereof away from the blanks in said stack to extract said endmost blank from said supporting means.

7. Blank feeding mechanism comprising a support for a stack of blanks, means for separating a portion of the endmost blank in said stack from the other blanks therein, a stripper plate, a lifter, a cam rail connected with said stripper plate arranged to engage said lifter, and means for movin said stripper plate and cam rail toward said stack to cause said stripper plate to extract the endmost blank from said stack and to cause said cam rail to engage said lifter and shift the other blanks in said stack.

8. Mechanism for feeding blanks having projecting flaps thereon, said mechanism Comprising a support for a stack of blanks, means for engaging a projecting flap on the endmost blank in said stack and for bending said flap away from the remaining blanks in said stack, a stripper plate arranged to enter the space between said flap and said remaining blanks, and a second stripper arranged to enter the space between said endmost blank and the other blanks in said stack subsequent to the entry of sand first named stripper.

9. Mechanism for feeding blanks comprising a magazine for supporting a stack of blanks, means for engaging the lowermost blank in said stack and bending a portion thereof downward, a pair of strippers arranged to enter the space between said lowermost blank and the other blanks in said stack, means for mOving said strippers simultaneously toward said stack, said strippcrs being positioned to enter the space between the blanks of said stack successively.

l0. Mechanism for feeding blanks comprising a magazine for supporting a stack of blanks. means for engaging the lowermost blank in said stack and bending a portion thereof downwardly, a stripper arranged to enter the space between said bent portion and the other blanks in said stack to produce further downward movement of said blank, a second stripper arranged to enter the space between said lowermost blank and the other blanks in said stack subsequentlo the entry of said first named stripper. and lifters cooperating with said strippers to lift the. remaining blanks in said stack.

11. Blank feeding mechanism comprising a support for a stack of blanks, means for bending one edge of the lowermost blank in said stack downwardly, a stripper; arranged to enter the space above the downwardly bent portion of-said blank, a cam rail connected with said stripper and movable therewith. a lifter having a nosepiece for engaging the blanks in said stack, a

roller on said lifter for engaging said cam rail, and a guide for said lifter permitting vertical and lateral movement thereof when engaged by said cam rail.

12. Blank feeding mechanism comprising a magazine for supporting a stack of lanks, means for bending the edge of the lower-' most blank in said stack downwardly, a stripper arranged to enter the s ace thus provided above said lowermost b ank, and means for moving said stripper horizontally toward said stack and downwardly away from the bottom thereof to extract said lowermost blank from said stack.

Blank feeding mechanism comprising a magazine for supporting a stack of blanks, means for bending a portion of the endmost blank in said stack away from said stack, a stripper plate for entering the space between said bent portion and said stack, guides for holding said stripper plate in substantially parallel positions, and means for moving said stripper plate in the direction of the plane of said blanks and also transversely to the plane therof to extract said lowermostblank from said stack.

14. Mechanism for feeding blanks comp ising a magazine for supporting a stack of blanks to be fed, means for separating a portion of the endmost blank from said stack, a stripper, and parallel motion mechanism for moving said stripper between said endmost blank and the other blanks in said stack'and transversely to the plane of said blanks away from said stack to extract said endmost blank from said stack.

15. Blank feeding mechanism comprising a magazine for supporting a. stack of blanks to be fed. a stripper for engaging the inner face of the endmost blank of said stack, means for engaging the outer face .of said blank, and means for moving said stripper away from said stack to extract said endmost blank therefrom while held between said stripper and said engaging means.

16. Blank feeding mechanism comprising a support for a stack of blanks, means for separating a portion of the endmost blank from said stack, a stripper arranged to enter the space between said endmost blank and said stack, a support for engaging said blank on the face thereof opposite said stripper, means for moving said stripper away from said stack to extract said endmost blank therefrom, and yielding means for holding said engaging means against said blank dur ing the movement of said stripper.

17. Blank feeding mechanism comprising a magazine for supporting a stack of blanks, a suction device for engaging the lowermost blank in-said stack and bending a portion thereof downwardly, a'stripper arranged to enter the space above said downwardly bent portion, a supporting finger arranged to engage the lower face of said endmost blank,

ill

means for moving said stripper downwardly to extract said blank from said magazine, and a. friction brake for retaining said finger against the lower face of said blank during the downward movement thereof.

18. Blank feeding mechanism comprising a magazine for supporting a stack of blanks, a stripper frame for extracting the endmost blank from said stark, parallel motion mechanism for operating said stripper frame, and a forwarding device for receiving the blank from said st ripper frame and moving it away from said stack.

19. Blank feeding mechanism comprising a magazine for supporting a stack of blanks to be fed. means for bending a portion of the ondmost blank in said stack, a stripper for entering the space between said bent portion and stack, means for imparting arcuate movement to said stripper to extract said blank from said stack, a forwarding device for receiving the blank from said stripper, and means for imparting straight line movement to said forwarding device.

20, Mechanism for feeding blanks comprising a magazine for supl'iorting a stock of blanks to be fed, a suction device for bending a portion of the lowermost blank in said stack downwardly, a stripper frame for entering the space above the bent portion of said blank, a pair of arms for supporting said. stripper frame and for imparting arcuate parallel motion thereto, a forwarding device for receiving the blank from said stripper frame, means for imparting straight line movement to said forwarding device A fllililillltllly held movable support connected with said forwarding device, and means for moving said support into engagement with the endmost blank in said stack prior to the operation of said stripper frame thereon.

21. Blank feeding mechanism comprising a magazine for supporting a stack of blanks to be fed, a forwarding device positioned below said magazine, means for imparting reciprocating movement to said forwarding device, a supporting member carried by said forwarding device and movable upwardly therefrom into engagement with the lowermost blank in said magazine, and means for extracting said lowermost blank from said magazine and moving it downwardly on said forwarding device while engaged by said supporting means.

22. Blank feeding mechanism comprising a magazine for supporting a stack of blanks to be fed, means for bending the edge of the lowermost blank in said stack downwardly, a stripper for entering the space above the bent portion of said blank, means for im-- parting horizontal and vertical movement to said stripper to extract said blank from said magazine, a horizontally movable forwarding device for receiving the blank from said stripper, a supporting finger connected with said forwarding device, lost motion connection between said finger and stripper for raising said finger into position against the lower face of the lowermost blank in said magazine, and friction men s for yieldingly holding said finger against said lowermost face when said blank is extracted from said magazine.

In testimony whereof I have signed my name to this specification on this 8th day of December, A. D. 1925.

MICHAEL J. MILMOE.