Patent GB-191322068-A (GB)
Title: Improvements in Metal Punching Machines.
Inventor: PAYNE THEODORE PESINGER
IPC: B21D28/24
Filed: 1913-09-30
Granted: 1914-10-30
Abstract: 22,068. Payne, T. P. Sept. 30. Punching.-Punching-machines for structural members such as I-beams are arranged to take a member from a stock supply, punch it in a determined manner and deliver it to stock, all the operations being either automatic or controllable by a single operator from a central point. The machine comprises (1) feed-rails for progressing stock beams up to a fixed limiting position; (2) means for taking the foremost beam from the feed-rails and delivering it on to feed-rolls; (3) alining-means for the beam; (4) semi-automatic means for indicating the length of the alined beam; (5) means for removing the punched beam from the feed-rolls and delivering it on to stock rails; (6) means for traversing the beams along the stock rails ; (7) automatic means for laterally moving one of the punch frames for the flanges in accordance with the depth of the beam; (8) automatic means for vertically moving the base carrying the flange and web punch frames in accordance with the width of the beam; (9) means for adjusting the flange punch-holders on their ram symmetrically with regard to the web of the beam; (10) means for traversing the web punch head laterally from a fixed station according to the location of holes required, and for returning it to that station after punching; (11) gag-controlling means for selecting various combinations of punches; (12) a controlling station where are located lieyboard controls of the type described in Specification 22,067/13, gag-operating levers, and switches for the various motor circuits &c. (1) Three sets of rails are employed, one stationary and two having oppositely - phased coupling-rod-like movements alternately to lift the beams from the fixed rails and move them forwards. The rails are flanged and are mounted on grooved eccentrics chain-geared to a common shaft with independent motor drive. The return movement of the rails is effected by weights or springs, friction-rolls relieving the rails from the eccentrics. (2) Rails 40, Fig. 14, operated similarly to the rails above and provided with a dog 39 pass under the flange of the foremost beam x located against a stop 26, raise the flange to clear the stop and move it forward on to the rolls 80. The rails 40 are driven faster than the supply rails to ensure only one beam being taken. (3) The beams are alined by rolls 151 arranged at intervals on each side of the punch frames. Other rolls are brought up to engage the opposite side of the beam, in the proximity of the punches, by the punch frames in movement (7). Of these the roll 191, Fig. 19, opposite the supply rails has a rising and falling motion to permit the incoming beam to pass freely over it. (4) On location against the rolls 151 and against an end stop, a series of fingers 125, Fig. 14, arranged at integral feet from the end stop, are pressed in, thereby raising numbered indicators 126 into the position shown in dotted lines. The number on the last indicator raised determines the integral feet in the beam. The indicators are carried by an angle bar 120 slidably mounted as controlled by a rack and pinion to shift the bar from a normal or zero position until the next indicator contacts the end of the beam. Dials geared to the pinion then indicate the odd inches and fraction. (5) After the measuring, the operator withdraws a detent allowing the end stop to swing aside. The beam is then fed by the rolls 80 step by step through the punch frames as limited by an end stop moved as described in the above-mentioned Specification. Beyond the punches, rails similar to the rails 40 remove the beam from the rolls- 80 and deliver it to the stock rails. (6) The beam is then engaged by dogs on an endless chain and carried away from the machine. The various rails and the chains each have a separate motor. (7) The punch frames 160, 382, Fig. 8, for the flanges are laterally staggered to provide more room for constructional details, and are carried by a vertically adjustable base 166. The frame 382 is mounted in a fixed position with reference to the stationary alining rolls 151, but the frame 160 is laterally movable by a screw 167 geared to a motor 170 in circuit with switch and reversing gear operated according to the direction of movement required. As an example, let it be assumed that a deep beam is following a shallow one. When the shallow beam has passed through the machine, the lever 190, which engages the beam, is swung by a spring into the position shown dotted in Fig. 19. Springs 220 are thus permitted to rock the lever system 230, 221, 225, 218. The coupling-rod 217 thus moves a slide 212, allowing the roll 191 to drop for the incoming beam to pass over. The bellcrank 230 has one arm formed as a hand-lever working between switches 237, 238, shown displaced, and in the present (dotted) position the switch 237 is closed. The frame 160 is thereby moved to the right and by linkage 199, 197, Fig. 8, and 195, Fig. 19, moves the slide 210, which carries the roll 191, in unison. As soon as the roll passes from under the beam, the lever 230 is thrown by hand into the other position, the slide 212 is thereby moved to raise the roll 191, and the motor is reversed, bringing a cutout 231 into contact with the flange and thereby stopping the motor. The beam, having moved the lever 190 into the full-line position, retains the lever 230 against return by its spring. The lever 190 also actuates switches in the motor 'circuits of the rails 40 and rolls 80. (8) As the beam comes into position on the rolls 80 it engages an arm 260, Fig. 8, on a rock-shaft. A further arm on the rock-shaft controls the position of a weighted plunger 275 actuating a reversing-switch with a neutral position. The bracket 262 supporting the arm is carried by the punch frame. According to the direction in which the shaft is rocked, a motor rotates screws 279, 280 to raise or lower the base 166 carrying the punch frames until the consequent displacement of the bracket 262 restores the arm and switch to its neutral position. (9) The punch-holders 415 are adjustable on the ram heads 340 by right and left hand screws 351 rotatable from the control station. (10) The web-punch head 480 is traversed laterally on its frame by rack bars 500, 510 geared up to operating and indicating mechanism at the control station, preferably having a motor drive through a worm-wheel with sliding key controlled as described in the above-mentioned Specification. After each punching, on the up-stroke of the ram, a pivoted trip 527, Fig. 31, attached to to the ram and inoperative on the punching- stroke, engages an arm 529 and throws over a switch 532 to reverse the motor and return the punch head to its initial position. On arrival, a finger 530 again reverses the motor ready for a fresh positioning of the punch head corresponding to a further setting of the control device. (11) The punches are provided with springs which may be as shown at 368, Fig. 28, or may be helical and located within a recess in the holder. The gags consist of slides 412 slotted on the side of the operating-lugs 414 which have a pin-and-slot connexion to arms on rock-shafts linked to quadrant levers at the control station. (12) A bank of switches is provided at the control station so that, in the event of a succession of similar beams passing, the automatic positioning means for the punches &c. may be cut out of operation. The automatic controls are so arranged that, on the machine being ready for a beam, the rails 40 are started up. When a beam is in position on the rolls 80, the rolls are driven and the rails 40 stopped. When the beam is completely punched, the rolls 80 are stopped and the delivery rails are started. In the embodiment shown, the punches are actuated hydraulically and the frames are resiliently mounted to ensure contact of the die with the work.