US1175663A

US1175663A - Die-press.

Info

Publication number: US1175663A
Application number: US94515A
Authority: US
Inventors: Edward W Robinson
Original assignee: INTERNAT BARREL Co
Current assignee: INTERNATIONAL BARREL Co; INTERNAT BARREL Co
Priority date: 1915-01-07
Filing date: 1915-01-07
Publication date: 1916-03-14
Anticipated expiration: 1933-03-14

Description

E. W. ROBINSON.

DIE PRESS.

APPLICATION FILED 1AN.7.1915.

Patented Mann, 1916.

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E W. ROBINSON.

DIE PRESS.

APPLICATION FILED JAN-7,1915. 1, 175,663. Patented Mar. 14, 1916.

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APPLICATION FILED JAN- T, I9I5- 1,175,663. Patented Mar. 14, 1916.

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E. W. ROBINSON.

DIE PRESS.

APPLICATION FILED 1AN.7.1915.

1,175,663. Patented Mar. 14,1916.

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EDWARD W. ROBINSON, OF SAVANNAH, GEORGIA, ASSIGNOR TO INTERNATIONAL BARREL COMPANY, OF SAVANNAH, GEORGIA, A CORPORATION OF GEORGIA.

DIE-PRESS.

' Specification of Letters Patent.

Patented Mar. 14;, 1916.

Application filed January 7, 1915. Serial No. 945.

To all 107mm it may concern:

Be it known that I, EDWARD V. ROBIN- son, a citizen of the United States, residing. in Savannah, Georgia, have invented certain Improvements in Die-Presses, of which the following is a specification.

My invention consists of a press for so acting, by means of dies, upon a sheet metal ring having an angular cross section as to produce a hoop consisting of a ring having substantially parallel flanges projecting at an angle therefrom at each edge, one of said flanges also having, if desired, an inwardly projecting flange at its free edge.

In the accompanying drawings-Figure 1 is a front elevation of a die press made in accordance with my invention; Fig. 2 is a view, partly in side elevation and partly in section; Figs. 3 and at are diagrammatic views illustrating the successive actions of the dies; Fig. 5 is a perspective view of the blank from which the hoop is to be produced; Fig. 6 is a perspective view of the finished hoop, and Fig. 7 is a side elevation of part of the press, illustrating a special feature of my invention.

As shown in Fig. 5 the blank from which the hoop is to be produced consists of a split ring presenting in cross section flanges 1 and 2 and a connecting web 3, the latter being at right angles or thereabout to the flanges 1 and 2, which are in parallel or substantially parallel planes. The purpose of the die press constituting the subject of my present invention is to convert th s ringshaped blank, into a hoop of the character shown in Fig. 6, and consisting of a ring member 4 with outer and

inner flanges

5 and 6 projecting therefrom at a right angle or thereabcut, the inner flange 5 having at its free edge, an inwardly projecting flange 7 parallel or substantially parallel with the ring member 4 of the hoop, although this flange may be omitted if desired.

Although I have shown both the blank and the hoop as in the form of split rings the ends may be welted together if desired before subjecting the blank to the action of the press, and the term ring as used here'n therefore means either a split ring or a continuous ring.

In Figs. 1 and 2, 10 represents the bed of the press having seated therein a plate 11 with projecting annular die 12, said bed also supporting a cross head 13 in which The die 16 is in the form of an inverted cup whose outer annular flange operates in connection with the outerfaceof the annular die 12 and the die 17 is a circular plate operating within the same in conjunction with the upper face of said die and also in conjunction with a ring die 18 disposed adjacent to the inner face of the die 12 and movable vertically in an annular recess in the plate 11, being normally projected by means of one or more coiled springs 19 intel-posed between the base of said recess and the under face of the ring die 18, as shown in Fig. 2. i

The plunger 14; has at the top a head 20 carrying anti-friction rollers 21 which are acted upon by cams 22 on a transverse shaft 23, and the inner plunger 15 has, at the top, an anti-friction roller 21 which is acted upon by a cam 25 on said shaft. The shaft 23 is carried by boxes 26 whch are vertically guided in standards 27 at opposite sides of the cross head 13, said boxes resting upon tapered gibs 28 which can be adjusted by means of set screws 29 so as to raise or lower, to a. limited extent, the boxes 26 and the shaft carried thereby. The cams 22 also act upon anti-friction rollers 30 carried by an upper shaft 31 which is mounted in boxes 82 movable vertically in guides 33 mounted on the standards 27, said shaft 31 being connected by yokes 3% to the head 20 of the plunger 14, as shown in Fig. 1.

The shaft 23 may be rotated in any suitable manner, beingin the present instance provided with a clutch 35 whereby it can be connected to or disconnected from a spur wheel 36, loosely mounted on the shaft, and driven by means of a spur pinion 37 from a power shaft'38 adapted to a bearing carried 42 therein for the reception of a lug 43 pro jecting from the inner plunger 15, Ora

? plural-.ty of such slots and lugs may be employed if desired. Depression of .the plunger 14 is effected by action of the cams 22 upon the anti-friction rollers 21 on the head of said plunger and depression of the inner plunger 1S effected by the action of the cam 25 upon the anti-friction roller 24 carried by said plunger 15, lifting of the;

' of the lug 43, but, owing to the slot 42,

commencing at a later of the plunger 14.

In the operation of the press the ringshaped blank is laid upon the top of the period than the lift annular die 12, when the dies16 and 17 are I raised above said. die 12,'the inner' portion of the flange 1 resting upon the top of said die 12, the member 3 extending downwardly along the inner side of said die and the flange 2 resting uponthe top-of the ring die 18. The die 17 first descends and clamps the' flange 1 upon the top of thedie 12 and the flange 2-upon the ring die 18, as shown in Fig. sothat the blank is firmly confined to the-die 12'with the flange 1 projecting out wardly from the top of said die.

On the descent of the die 16 its-outer flange bends the outer portion ofthe flange 1 down around the outer face of the die 12, as shown in Fig. 4. In its descent the die 16 pressed the ring die 18 downwardly in the recess in the die plate 11 and compressed the spring support upon which said ring die is mounted. consequently when the dies are again raised the ring die 18 will be forced upwardly so as to loosen the hoop from the die 12 and permit it to be carried away from the press preparatory to the introduction of a. fresh blank.

In order to insure the lifting of the pressed hoop clear of the die 12 I magnetize the

dies

16 and 17, or either of them, and in order that this magnetic attraction may be intermittent the magnetized die constitutes the pole piece of an electromagnet through the winding of which the electric circuit may be established when the die is at the lower portion of its movement and'can be cut off as the die rises so as to demagnetize the same andpermit the hoop to drop therefrom or be readily removed. In Fig. 7 I have illustrated one construction whereby this result may be attained. In the construction there shown the plunger 14 is provided with a respectively, to the terminals of a n electric I circuit.

The plates 47 and'48 have spring fingers 49 which, when the plunger 14 reaches a certain point in its descent, contact with the plates 46 and establish an electric circuit through the winding 45 so as to convert the r plungers l4'and 15int0 the cores of an electromagnet of which the dies 16 and 17 are independent wirings and electrical connec- The plates 46 are of such tions operating in the manner above dedesired.

. In order to preventthe magnetization of the fixed frame of the machine and the fixed die the crossheadmay be provided with an insulating bushing 50 for the passage of the plunger 14. -V V 7 When the die 17 clamped the flange 2 of the blank against the upper face of the ring" die '18 it also served to flatten out any wrinkles or corrugations which may have" been formed in-said flange while the same was being'bent edgewise into ring form. As

the die 16 bends-the projecting portion of the flange 1 of the blank down around the outer face of the die 12 wrinkles will also be formed at and near the free edge of said flange because of the contraction in diameter to which it is subjected,'but as the die 16 continues its descent these wrinkles will also be flattened by the time the die 16 reaches the limit of its downward movement,'-or if it is not desired to so flatten them the down-V ward movement of the die 16 may be arrested at a higher point. i

The'dies 16 and 17 may be screwed or otherwise detachably mounted upon the lower ends of the

plungers

14 and 15, respectively, so as, to be readily removed and replaced, and the die plate 11 with its annular die 12 and ring die 18 can also be readily removed frorn'the bed plate 10 of the press one set of dies for-another to accordwith differences in the diameter or crosssectional' form of the 'hoop'to he producednBy raising or lowering the boxes 26 of the shaft 23 by means-of the gibs28 the limit of descent of the dies 16 and 17 can be regulated and the press thus adapted for actingupon sheet metal of different-degrees of thickness.

I claim:

1. The combination, in a die press, of an' annular die, a pair of die-carrying plungers, and means for independently operating said plungers, the die of one plunger pressing the blank against the face of the annular olie and forwardly along one side of the same, and the die of the other plunger pressing the blank forwardly against the other side of said annular die.

2. The combination, in a olie press, of an annular forming die, a die inside of the same, a pair of die carrying plungers, and means for independently operating said plungers, the die of one plunger pressing the outer portion of the blank forwardly against the outer side of the annular die, and the die of the other plunger pressing the blank against the face of the annular die, forwardly against the inner side of said annular die and against the face of the inner die.

3. The combination, in a die press, of an annular forming die, a yieldingly mounted die inside of the same, and a die-carrying plunger whose die presses the blank against the face of the annular die, forwardly against the inner side of said annular die and against the face of said yieldingly mounted inner die.

4. The combination, in a die press, of an annular forming die, a die inside of the same, a pair of die-carrying plungers, and means for independently operating said plungers, the die of one plunger pressing the blank against the face of the annular die, forwardly against the inner side of the same and against the face of the inner die, and the die of the other plunger pressing the outer portion of the blank forwardly against the outer side of the annular die.

5. The combination, in a die press, of an annular forming die, a yieldingly mounted die inside of the same, a pair of die carrying plungers, and means for independently operating said plungers, the die of one plunger pressing the blank against the face of the annular die, forwardly against the inner side of the same and against the face of the yieldingly mounted inner die, and the die of the other plunger pressing the outer portion of the blank forwardly against the outer face of said annular die. 7

6. The combination, in a die press, of apair of vertically movable die-carrying plungers, cam mechanism for projecting the same and for retracting one of the plungers, and a connection between said plungers whereby one is caused to retract the other.

7. The combination, in a die press, of a pair of movable die carrying plungers, cam mechanism for projecting the same and for retracting one of the plungers, and a lost motion connection between said plungers whereby one is caused to retract the other after the first plunger has completed a portion of its retracting movement.

8. The combination, in a die press, of an annular die, a pair of plunger-s, one disposed 'ithin the other and guided thereby in its longitudinal movement, an inverted cupshaped die carried by the outer plunger and constructed to press the outer portion of the blank forwardly around the outer side of said annular die, a die carried by the inner plunger and operating within said outer die, said inner die being constructed to press the inner portion of the blank forwardly around the inner side of said annular die and means for independently depressing said plungers.

9. The combination, in a die press, of a die carrying plunger, a shaft having cam mechanism for projecting said plunger, ashaft which is also acted upon by the same cam mechanism which projects the plunger, and links connecting said latter shaft and the plunger whereby the same cam mechanism which projects the plunger is also caused to retract the same.

10. The combination, in a die press, of a fixed die, a movable die, a plunger carrying the latter, a shaft having cam mechanism for projecting said plunger, and means for raising and lowering said shaft in respect to the fixed die.

11. The combination, in a die press, of a die carrying plunger, a shaft having cam mechanism for projecting said plunger, boxes carrying said shaft, and adjustable supporting gibs for said boxes whereby they can be raised or lowered.

12. The combination, in a die press, of a fixed die, and a movable die operating in conjunction therewith, said movable die being magnetized so as to lift the pressed object from the fixed die on the retraction of the mo fable die.

13. A die press in which are combined two independently operating dies, means for simultaneously magnetizing both of said dies, and means for simultaneously demagnetizing the same.

14. A die press in which are combined two independently operating dies, one inside of the other, means for simultaneously magnetizing both of said dies, and means for simultaneously demagnetizing the same.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDWARD W. ROBINSON.

Witnesses KATE A. BEADLE, HAMILTON D. TURNER.

Copies of this patent may be obtained for five cents each. by addressing the "Commissioner of Patents,

Washington, D. C.