US2576402A

US2576402A - Transfer mechanism

Info

Publication number: US2576402A
Application number: US767794A
Authority: US
Inventors: Max M Kipfer
Original assignee: Aluminum Company of America
Current assignee: Howmet Aerospace Inc
Priority date: 1947-08-09
Filing date: 1947-08-09
Publication date: 1951-11-27
Anticipated expiration: 1968-11-27

Description

Nov. 27, 1951 M. M. KlPFER 2,576,402

TRANSFER MECHANISM Filed Aug. 9, 1947 3 Sheets-Sheet 1 lNl ENTOR.

- Max /7. KIPFER ATTORNE Nov. 27, 1951 KlPFER 2,576,402

TRANSFER MECHANISM Filed Aug. 9, 1947 s Sheets-Sheet 2 INVEN'I'OR.

BY W/ZZMg ATTORNEY Nov. 27, 1951 M, lPFER 2,576,402

TRANSFER MECHANISM 3 Sheets-Sheet 3 Filed Aug. 9, 1947 54 I0 I 58 i 6 ATTORNEY Hub 48, arm 49 and cone 5!] may be made I separately and secured together as by peening, r

welding, upsetting, etc.

The delivery tube 24 is supported by the frame- 8 with its upper end extending within the bed 1 below and to the side of the center line of the slide 25, the centers ofthe delivery tube entrance and of the female die coinciding with the extremes of an arc centered at shaft 46 and equal in degrees to theicircumferential extent of slot 44 in cam 43. It-will be understood that an oscillatable member other than the cylindrical cam shown may be used and the same result achieved by changing the formof the cam slot or relocating the delivery tuber An air line 52 is positioned with an aperture '53 adjacent its closed end in line with the open end of tube 24.

The male pleating die 19, mounted in a housing 54 bolted toan extension of thebed 1, carries the shearing edge 55 and includes-a stationary mandrel'56 and an annulus; 51 carried on

rods

58, 59 which are held yieldably in the position shown in Fig. 6 by suitable means such as springs. Both the annulus and the mandrel are grooved as shown atGll. A stripper plate 6! is mounted in frontof the male die.

The female die H carries an annulus 62 having a shearing edge 63. The main die portion 64 has grooves 65 complementary to the grooves 69. The center of the. die is formedby an ejector 66 sliding in sleeve 51 and carrying pin 68 extending through slots 69 in said sleeve 61,. Springs tend normally to hold the ejector 66 in' retracted position, the advanced position shown in Fig.5 beingthe result of action of the knockout assembly, as will bedescribed. .The operation of the improved apparatus will be readily understood. With the reciprocating assembly retracted, astrip of foil from a roll (not shown) is fed behind the stripper plate 6!, z

or between housing 54 and plate El as viewed in Fig. 6. The roller 26 is then in the position shown in Fig. 5 and as the reciprocating as sembly begins its. forward movement the roller bears upon the lowerwall of. the slot 44 turning the cam. 43 counterclockwise as viewed in Fig. 4 and swinging arm 49 until cone 59 is in linewith the open end of tube 24,. and between said open end and aperture 53. Continued move-. ment of the reciprocating assembly "carries the shearing edge 63 past; the stripper plate 6| so that this edge cooperates with shearing edge 55 to, cut a round blank from thefoil strip. Asthe annulus 5,1 is moved against the yielding support for

rods

58, 59 and the mandrel 56 remains stationary, the ejector 66 being retracted,- the male and female dies form a pleated cup shaped-blank. On retraction of the reciprocat ing mechanism, the' roller 26 travels in the straight portion of slot 44 until the dies are completely disengaged. Approaching the end of the retracting movement the roller bears against the upper wall of slot 44 and turns the "cam clockwise'as .viewed in Fig. 4, swinging arm =4 9- until;the cone 5fl is 'in"-position'between the 4 male and female dies. At that time air is admitted to cylinder 39 projecting piston 49 against the tie rod 38 and swinging levers 36 to bring their free ends against rods 33 to project the heads of adjusting screws 34 against pin 68. This position of the parts is that shown in Figs. 1 and 2. This action thrusts the ejector 66 forwardly to the position shown in'Fig. 6] to place the pleated capsule on the cone 503 At the beginning of the advancing stroke the roller 26 again bears on the lower wall of the cam slot to again swing the arm to bring the cone carrying the pleated capsule in line with a constant or timed air blast from aperture 53 which I dislodges the capsule and directs it, closed end first, into tube 24. The successive capsules fall from the lower end of tube 24 in this same orientation and are properly positioned in the finishing dies 23.

Admission of air to the cylinder 39 from the valve 42 is substantially instantaneous, and immediately after actuation of the knockout dc-, vice, the ejector 65 and rods 33 are retracted by springs 70, which, however, may be dispensed with, as the same action would result, although at a later point in the cycle, by reason .of the stationary mounting of mandrel 5'6.-

It will be seen that throughout the travel of roller 26 in the straight portion of cam slot 44, the cone dwells at its lower position. Oscillation of the cone 59 into and out of the capsule receiving position is controlled by travel of the roller in the curved portion of the slot or at the end of. the retracting stroke andat the beginning of the advancing stroke. Movement of the cone is accordingly relatively rapid, and the action of the knockout assembly is timed to occur.

at substantially the instant of full retraction.-

vention is adaptable to 7 other manufactures "as: well, and will be found to be of advantage in any. manufacture of cup, shaped articles in more than one operation. And although the invention-is oft mostpractical. value where such articles are thin walled or otherwise delicate, it is not limited in that respect. Moreover various modifications of construction are contemplated within the invention, which is limited only as defined in the.

appended claims.

I claim: v 1. In apparatus ing openings therethrough and shaped to enter the formed article,-means responsive to the re-- ciprocating movement of said die to oscillate said member between a position coaxial with said;

die on retraction of said die and a withdrawn position onadvancement of said die, and means coinciding with the withdrawn position of said.

member to direct an air blast into said member and outwardly through the openings therein. .2; In apparatus :for forming cup shaped articles including a reciprocating die, a member in the form of a hollow truncated cone having openings in its walls, means responsive to the recip-- rocating movement of said die to oscillate said member :between a position coaxial with said die on, retraction of said die and awithdrawn position on advancement of said die, and means,co-

for forming cup shaped arti-: cles including a reciprocating die, a member hav.

inciding with the Withdrawn position of said cone shaped member to direct an air blast into said cone shaped member and outwardly through the openings therein.

3. In apparatus for forming cup shaped articles including a reciprocating die, a shaft arranged parallel to the direction of movement of the reciprocating die, a member in the form of a hollow truncated cone having openings in its walls carried by said shaft and offset therefrom, means responsive to the reciprocating movement to oscillate said shaft to place said member in position substantially coaxial with the die on retraction of the die and to withdraw it from said position on advancement of the die, and means coinciding with the withdrawn position of said cone shaped member to direct an air blast into said cone shaped member and outwardly through the openings therein.

4. In apparatus for forming cup shaped articles including a reciprocating female die having an independently movable ejector member, a shaft arranged parallel to the direction of movement of the reciprocating die, a member in the form of a hollow truncated cone having openings through its wall carried by said shaft and offset therefrom, means responsive to the reciprocating movement to oscillate said shaft to place said cone member in position substantially coaxial with the die on retraction of the die and to withdraw it on advancement of the die, means actuated upon full retraction of the die to move the ejector member re1ative to the die to dislodge an article from the die, and means coinciding with the withdrawn position of said cone member to direct an air blast into said cone member and through the openings in the wall thereof to dislodge an article from said cone member.

5. In apparatus for forming cup shaped articles including a reciprocating female die adapted to retain the formed article while being retracted and an ejector member incorporated in the die and movable independently thereof, a cylindrical cam arranged parallel to the direction of movement of the die and having a slot in its wall including a relatively long straight portion and a relatively short curved portion at its rearward end, a shaft on said cam extending in the direction of the advancing movement of the die, a member bearing in said slot and reciprocating with the die, a member in the shape of a hollow truncated cone having openings through its wall fixed relative to said shaft and offset therefrom to present said cone shaped member in position substantially coaxial with the die when said bearing member is in said curved slot portion, means actuated upon full retraction of the die to move said ejector member relative to the die to dislodge an article therefrom, and means in line with the position of the cone shaped member when said bearing member is in said straight slot portion for directing an air blast into said cone shaped member and through the openings therein.

6. In apparatus for forming cup shaped articles including a reciprocating assembly carrying a female die adapted to retain the formed article while being retracted and an ejector member incorporated in the die and movable independently thereof, a cylindrical cam arranged parallel to the direction of movement of the die and having a slot in its wall including a relatively long straight portion and a relatively short curved portion at its rearward end, a shaft on said cam extending in the direction of the advancing movement of the die, a stud secured to said reciprocating assembly and carrying a roller bearing in said slot, a member in the shape of a hollow truncated cone having openings through its wall carried by an arm fixed to said shaft to present said cone shaped member in position substantially coaxial with the die when the roller is in said curved slot portion, a pair of levers pivoted on said reciprocating assembly, a pair of plun-gers slidably mounted on said reciprocating assembly, pins on said ejector member in line with said plungers, air actuated means to swing said levers against said rods to move said ejector member relative to the die to dislodge an article therefrom, a valve arranged to open on full retraction of the reciprocating assembly to admit air to said air actuated means, and means in line with the position of said cone shaped member when said roller is in said straight slot portion for directing an air blast into said cone shaped member and through the openings therein to dislodge an article from said cone shaped member.

MAX M. KIPFER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS