US976877A - Punching-machine. - Google Patents

Description

c. P. HEINss. PUNGHING MACHINE. .APPLICATION FILED JULY 11,1910.

Patented N0v.29,1910.

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CHRISTIAN F. HEINSS, 0F CINCINNATI, OHIO.

IPUNCHING-IVIACHINE.

Specification of Letters Patent.

Patented Nov. 29, 1910.

Application filed July 11, 1910.' Serial No. 571,437.

To @ZZ whom it may concern:

Be it known that I, CHRISTIAN F. HnrNss, a citizen of the United States, and a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Punching-Machines, of which the following is a speciiication.

The first primary object of my invention is to obviate the liability of the operator to receive injury from the machine while he is feeding it. rIlle second primary object of my invention is to facilitate the feeding of the machine. The third primary object of my invention is to enable the machine to be fed more rapidly.

The several features of my invention and the various advantages resulting from their use conjointly or otherwise will be apparent from the following description and claims.

In the accompanying drawing, making a part of this specification, and in which similar characters of reference indicate corresponding parts, Figure l is a front elevation of a punching machine with which my invention has been incorporated. Fig. 2 is an elevation of the right hand side of this machine. Certain of the dotted lines show the position of the parts of the machine when the rear operator feeds it. In this view, the left hand female die is inclined to the left and out of alinement with the male die, whereas in Fig. l, it is vertical and directly under the male die.

I will now describe my invention in detail.

The machine has mechanism for raising and depressing the male die of the punch. rIhis mechanism may be of any of the well known kinds, or it may be of a new kind. In the present illustrative instance, A indicates the frame of the machine, of suitable form. In the upper portion of the machine there is located a shaft B, duly journaled in the uprights A2, A2 of the frame A. rIhis shaft carries two cams,y alike, and similarly mounted on this shaft B. Each cam is surrounded by the usual strap C. Each strap is at its lower end connected to the upper end of a link piece C2. Each of these link pieces C2 is hinged at its lower end by a hinge C3 to the upper portion of the die seat or holder D. The preferred means for connecting` the straps C, C, respectively to their respective links C2, C2, 1s in each instance a screw threaded rod C4 with set screws. By such a connection, the links C2, C2, and with them the die seat D can be raised or lowered according to the depth of the male die and the vertical position the said die is to occupy when performing its work.

The die seat D carries the usual and well known stripper E, which is hung upon the lugs E2 fixed to the die seat D, by means of bolts E3, one at each lug E2, each bolt connected at its lower end to a lug E4 of the stripper E. A nut on the end of each bolt E2 below the adjacent lug E4 upholds the stripper to the bolt E3. Each bolt is free to slide relative to its lugs in the well known manner. A spring E5 is present on each bolt E3 between the upper lug E2 and the lower lug E4. As the die I-I descends, the stripper descends and meets the outlying portions Y2 of either female die M or N, its downward progress is checked, and the bolts E3 slide through their lugs, and the springs E5 are compressed. After the die H has done its work and is rising,'these springs E5 keep the stripper down and hold down the metal piece just operated upon by the said die and prevent it from rising with the upwardly moving die, and leave it upon the female die M or N in a position to be removed from the latter. The die seat D slides in guideways in the vertical portions A2, A2 of the frame, after the usual manner.

An outline view of one of the cams, its strap C, link piece C2, screw C4, hinge C3, bolt E3, stripper E and die I-I is shown in dotted lines in Fig. 2, but such parts are not therein indicated by characters, the latter being omitted to avoid confusion in the reading of the drawing. The die H is duly fastened to the die seat D. In the present instance, it is connected to the said die seat by bolts H2. Power for rotating the shaft B is derived from a suitable source. In the present instance, such power is imparted to the gear wheel F, which receives its rotatory movement from a gear wheel or pinion not shown. A clutch mechanism J, for putting the power wheel F into engagement with the shaft'B, and thus operating the machine, and for putting this wheel out of engagement with the shaft B when the machine is to be stopped, is shown in connection with said shaft B and the wheel F. Said clutch is duly operated either by hand or by the foot. In the present illustrative instance, it is worked by a treadle F2 through the agency of the rod F3. As such clutch mechat one end projects beyond the same.

anism is Vcommon and well understood, fur ther mention thereof is omitted. The customary fly Vwheel L 1s present on shaft L2,

and journaled in the frame A2.. On the other `end of shaft L2 is a gear L'which meshes'with the large gear'F. This gear F engages with shaft B, and in turn operates the male die H, and through gear VG and cam gear W3 operates the oscillating table P, which servesV as the die block for Vthe female dies.

Ybe termed a double die block P. But this double die block P is practically in operation a single block. This block P is hinged below, namely: it is fixed on a shaft P2. This shaft P2 is journaled in the frame A ad n this end portion is lixed one end of a lever R, whose other end R2 is connected by a pivot R3 to one end of a connecting rod S. The other end ofthis connecting rod S is AVpivoted to the lower end ofa lever V by a pivot connection T. This connecting rod S may be lengthened or shortened, and I prefer to effect this adjustment as to its length j as shown, and as follows: The rod S is V.te

made in three sections. One end section S2 is pivoted to the lever R.' The other end section S2 is pivoted to the lever V. The middle section is a right and left hand screw whose screw threaded ends are respectively Yscrewed to their respective adjacent end sections S2. By rotating this screw in one direction, the rod S is shortened. By rotating this screw in the other direction, the rod S is lengthened. Set nuts S3, S3, respectively tighten and set the screw St at the respective ends of said screw S4. The lever V is pivoted on pivot shaft V2 to the frame A2. The upper end of this lever V carries a rollerV V3, shown in dotted lines in both Figs.

- '-1 and 2. This roller V3 is located in a cam the frame A2.

groove 1, 2, 1, 2, of a grooved cam W. This cam W 1s fixed on a shaft W2 journaled m On this shaft W2 1s concen- V trically fixed a gear wheel 1V 3, whose teeth @VW mesh with the teeth V5 of the gear wheel WG. The latter is mounted on the shaft B, and isV rotated thereby. 'Vhile the connecting rod S adjustable as to length primarily regulates the distance between the `lever V, the connection T now to be described regulates the amount of throw of the lever V which is to be imparted to lever R,

VdiesV M and N.

Y,This bolt T passes through the slot T2 and therefore to the die block P, and the This connection is as follows: In-the lower end of the lever V is a slot T2. The bolt T passes through a washer T3 in and upon the front of the lever Vi through the adjacent connecting rod S2 and Vthen through a washer on and against the other or back side of the said rod S2: This washer is indicated by dotted lines in Fig.

2. The bolt T is duly secured in front by a nut T4 screwed on to it, and at the rear by its head or a suitable nut. Thus the connection between the connecting rod S and the lever V is such that the pivot T and with it the adjacent end of the connecting Vrod S can be moved up and down in the slot T2 and fixed at a desired point therein. Obviously the distance the lever V will move the die block P will be increased or diminished as the pivot T is set farther from the pivot V2 of the lever V or set nearer to the said pivot V2. Y

The cam groove of the cam 1V is shaped so as to consist of four divisions. The two opposite divisions 1 and 1 are at substantially the same distance from the shaft `\V2 of the cam. Division 2 of the groove is farther from the said shaft W2 than either of the said divisions 1, 1. Division 2 is nearer to the said pivot than either of the said divisions 1, 1. The object of these conformations 1, 2, 1, 2, of this groove will be apparent from the functions it performs. These functions will now be described.

Suppose the parts of the machine to be in the position shown in Fig. 2. The ma* chine is started. It matters not in which direction the cam V rotates, but for the sake of perspicuous description, let usassume that this cam W is revolving from the left of the shaft W2 up over and down to the right of said shaft 72, and down to the right'and up at the left of the said shaft 72. The female die M is directly below the die H. As the parts operate, the eccentrics on the shaft B depress die H to the female die M, and cause the die H to punch or cut or otherwise form and operate on the metal placed upon this female die M. At the same time this operation is going on, an operator located at the left side or front of the machine is placing` on the female die N a piece of metal on which the-male die H is soon to operate. Meanwhile the cam 1V is rotating,`and the grooved part 2 of the groove is moving along the roller V2. By the time the upper groove 1 has come to the roller V, the die H has risen and left upon the female die M the metal it has newly formed' therewith. 'As the upper groove l comes onto the roller V3, it moves the roller to the left, and moves the female die M away from under the male die H and moves it over to the right into the position shown by dotted lines in Fig. 2 As this female die M is thus moved, of course the female die N is moved to the right and is brought directly under the male die H. l/Vhile the cam lV is moving the groove 2 along the roller V3, the male die I-I again descends and cuts, punches or otherwise forms the metal previously laid upon this female die N by the operator at the left. At' this time the operator at the right (or back) side of the machine takes off' from the female die M, now as mentioned atsaid left (or back) side of the machine, the metal already operated upon by the male die H, and places on the said female die M a fresh piece of metal .to be operated upon. The male die H rises, and by this time the second groove l of the cam groove is moving onto the roller V 3, and this groove l causes the lever V to move the female dies M and N to the left, and brings the female die N under the male die H, and locates the female die N to the right of the machine and in the position it occupies in the drawing, and wherein it was when the description of this operation began. The operator at the right removes from this male die N the metal newly shaped by the said male die H, and places on the said die a fresh piece of metal to be formed. As the machine continues to be operated, the aforedescribed operations are repeated.

F rom the foregoing description, it will be seen that by my invention the efficiency of the machine is very much increased. Two operators are enabled to feed the machine and one is always removing the newly punched, cut or otherwise formed piece of metal from one of the female dies, and putting on this die a new piece of metal to be operated on while the machine is operating on a piece of metal presented by the other die. Thus the speed of the machine is more than doubled, because there is no machinery and no narrow clogged space in the way of each operator when he comes to remove the worked piece from the female die and replace it with a new piece to be operated upon. But the female die is away from the stripper and male die, and there is plenty of room above the female die in which to handle the pieces to be fed to the machine, and to be removed therefrom. The safety of the hands of the operator is also insured, insomuch as his hands are never under the male die, or under the stripper, and there is nothing that can accidentally descend and bruise, mash or cut his hands.

In the specification and claims, wherever I refer to the machine as one for punching, I desire it to be understood that such machines can be for other operations such as cutting and shaping and other kinds of die forming, and wherever the words male die are used, they will be understood to include a cutting knife. Also where the words female die are used, they will be understood to include that part of the die complementary to the male die.

VVhat I claim as new, and of my invention and desire to secure by Letters Patent, is z- 1. In a machine for punching and the like, two female dies fixed to a common shaft, a lever fixed to said shaft, a second lever connected by a connecting rod to the first named lever, and means for oscillating this second lever, and thereby moving said female dies back and forth alternately under the male die, and providing periods of rest for such female dies when one is under the male die, and the other is being relieved of the metal operated on by said die and a new piece of metal to be worked is being placed thereon.

2. In a machine for punching and the like, two female dies fixed to a common shaft, a lever fixed to the said shaft, a second lever connect-ed by a connecting rod to the first named lever, and means for oscillating this second lever, and thereby moving said female dies back and forth alternately under the male die, and providing periods of rest for such female dies when one is under the male die, and the other is being relieved of the metal operated on by the die, and a new piece of metal to be worked is being placed thereon, the said connecting rod adapted to be lengthened and shortened, as desired.

' 3. In a machine for punching and the like, two female dies fixed to a common shaft, a lever fixed to said shaft, a second lever connected by a connecting rod to the first named lever, and means for oscillating this second lever, and thereby 4moving said female dies back and forth. alternately under the male die, and providing periods of rest for such female dies when one is under the male die, and the other is being relieved of the metal operated on by the die and a new piece of metal to be worked is being 1i placed thereon, the lower end of the second named lever being provided with a slot T2, and the pivot connection of the adjacent end of the said connecting rod being adapted to be moved in said slot, and fixed at a desired point therein.

4f. In a machine for punching and the like, two female dies fixed to a common shaft, a lever fixed to saidshaft, a second lever connected by a connecting rod to the first named lever, and means for oscillating this second lever, and thereby moving said female dies back and forth alternately under the male die, and providing periods o f rest for such female dies when one is under the male die, and the other is being relieved of the metal operated on by the die and a new piece of metal to be worked is being placed thereon, and the said connecting rod provided with means for lengthening and shortening it, the lower end of the secondnamed lever being provided with a slot T2, and the pivot connection of the adjacentend ofthe saidA connecting rod being adapted to be moved in said slot and `fixed Vat a desired Y male dies back and forth alternately under themale die, and providing periods f rest forsuch female dies when one is under the male die, and the other is being relieved of themetal operated on by the die and a new Vpiece of metal to be worked is being placed thereon, the lower end of the second named lever being provided with a slot T2, and the pivot connection of the adjacent end of the said connecting rod being adapted to be moved in said slot, and fixed at a desired point therein, and the said connecting rod consisting of the end sections and of a central right and left hand screw. whereby the sections can be approximated or separated.

6. In a punching machine, a male die, two female dies mounted and adapted to move together, a cam adapted to operate the end of an adjacent lever, connectionr intermediate between said lever and the female dies for enabling the said lever to move said female dies, the faces of the cam being four principal ones of which two opposite faces are adapted to hold the female die stationary, one of said female dies being beneath the male die, and of the other two faces one f is adapted to' move the female dies in one direction and the other to move the female dies in the opposite direction.

7. In a'punchmg machine, a male die, two

female dies mounted on a double die-block fixed on a shaft, a lever fixed to said shaft, a second lever, a connecting rod uniting the free end of the first named lever to the adjacent end of the second lever, a cam receiving a projection of this second lever, and adapted thereby to operate the said second lever, the cam having four principal faces, of which two opposite faces are adapted to hold the female dies stationary, one of said female dies being beneath the male die, and of the other two faces one is adapted to move the female dies in one direction and the other to move the female dies in the contrary direction.

8. In a punching machine, a male die, two female dies mounted on a doubledie block fixed on 'a shaft, a lever fixed to said shaft, a second lever, a connecting rod uniting the free end of the first named lever to the adjacent end of the second lever, a cam receiving a projection of this second lever, and adapted thereby to operate the said second lever, the cam having four principal faces, of which two opposite faces are adapted to hold the female dies stationary, one of said female dies being beneath the male die, and of the other two faces one is adapted to move the female dies in one direction and the other to move the female dies in the contrary direction, the said connecting rod being of a construction adapted to be lengthened and shortened, and the pivoted connection of the connecting rod and of the lever directly operated by the cam, including a construction adapted to enable the throw of the said lever to be increased or diminished.

CHRISTIAN F. HEINSS. Attest:

CHARLES W. HOFFMAN, K. SMITH.

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