RU2108185C1 - Feeding apparatus for transfer press - Google Patents

Abstract

FIELD: forging equipment, namely feeding apparatuses of transfer presses. SUBSTANCE: apparatus provides part feed due to rotation of carriage carrying double-side clamping devices. Said clamping devices at kinematic cycle are turned by 180 degrees. Drive mechanisms of said carriage and clamping devices are in the form of self-nonbraking threaded joints operating by means of power cylinders. Feeding apparatus is rather compact, its members are placed in press table between die units. EFFECT: improved design, compactness. 2 dwg

Description

 The invention relates to forge-and-press equipment, specifically to the feeding devices of multi-position presses.

 Known designs of multi-position automatic presses equipped with clamshell and tick feeds.

 The disadvantages of such feeding devices include the complexity of their drive, a decrease in the accuracy of movement with an increase in the number of press strokes, and the complexity of commissioning.

 Closest to the claimed invention is a device for removing parts from a stamp, made in the form of two coaxially mounted in one another rotary grippers with oppositely directed screw grooves [2].

 A disadvantage of the known device is the design complexity, the need for a double stroke of the power cylinder to ensure a complete kinematic cycle, low compactness and reliability.

 The invention is aimed at simplifying the design, improving reliability, improving compactness. This is achieved by the fact that the rotary double-sided grippers driven by the power cylinder are equipped with means for joint rotation of the grippers, since they are mounted on a carriage, the rotation of which is carried out from the power cylinder placed in the press table. In this case, the feed design is placed between the stamped positions of the press, and the kinematic cycle is provided in one stroke of the power cylinders, which increases the reliability of the mechanism.

 In FIG. 1 is a general view; FIG. 2 section AA of FIG. one.

 In table 1 of the multi-position press, between the matrix blocks 2, 3, on the bearings 4, 5, a rod 6 is mounted, on which a carriage 7 is fixed with a pneumatic cylinder 8, a spring 9 and a rod 10. The rod 10 is connected to the cross member 11, at the ends of which screws 12, 13 are fixed with non-self-locking thread. The screw thread interacts with the thread of the bushings 14, 15, on which the double-sided grippers 16, 17 are fixed. The rod 6 has a screw connection 18 in the lower part with a non-self-locking thread, with which the pusher 19 is connected, connected to the crossbar 20, mounted on the rods of the pneumatic cylinders 21, 22 . At the bottom of the pusher there is a fitting 23 for supplying air to the cylinder 8. There is also a seal 24. Next to the punch 25, 26 are profile stops 27, 28. In the cylinder 8 is a piston 29.

 Press feed works as follows.

After the working stroke of the press, the product lifted from the matrix block 2 by the ejector is clamped by double-sided grippers 16, 17. The clamp of the product is clamped by supplying air to the pneumatic cylinder 8 under the piston 29, the rod of which is connected to the cross-member 11. Non-self-locking screws 12, 13, mounted on the cross-member interact with the threaded bushings 14, 15 of the grips, providing clamping of the product. When air is supplied to the pneumatic cylinder 8, the spring is compressed. Then, by a signal from the press apparatus command, air is supplied to the lower cavity of the pneumatic cylinders 21, 22, thereby moving upward the crossbar 20 and the pusher 19 connected with it, which through the screw connection 18 with a non-self-locking thread ensures rotation of the stem 6 together with the carriage 7 mounted on it Thus, the means of joint rotation of the grippers provide the transfer of the clamped product from one position to another. Then, at the moment the slider approaches the start point of the working stroke, the signal from the press apparatus command stops the air supply to the cylinder 8 to the piston 29, the spring is squeezed out and, through screw pairs, opens the grippers 16, 17 in opposite directions, which, having turned by an angle of about 180 ^o , abut to the profile limiter 27. After the end of the working stroke and the raising of the slider, the limiter fixed on the slider also rises and the grippers clamp the product lifted from the matrix unit by the ejector. Further, at a signal from the control unit, compressed air is supplied to the upper cavity of the pneumatic cylinders 21, 22, and thereby a downward movement of the overflow 20 and the associated pusher 19 is ensured, which leads to a turn of the carriage 7 with the clamped product. After turning on a signal from the command of the device, air is supplied to the pneumatic cylinder 8 under the piston 29, the product is released, the grippers are pulled apart, resting against the limiter 27 and the cycle repeats.

 The use of the invention allows to simplify the design of the feed, reduce energy consumption for the completion of the kinematic cycle, increase the convenience of maintenance and adjustment.

Claims (1)

 A multi-position press feed comprising a pusher kinematically connected by its rod through non-self-locking screw couplings with double-sided grippers mounted for mutual rotation for clamping-expanding the product, and means for jointly turning the grippers, characterized in that the feed is provided with a carriage at the end of the push rod grippers, and mounted on it with a pneumatic cylinder with a spring-loaded piston, on the rod of which a cross member is fixed, on which screws of the aforementioned non-self-locking brackets are fixed hsya threaded pairs, and means co-rotation grips are designed as screw thread nesamotormozyascheysya in conjunction with its pusher rod, the latter is mounted in bearings on the press table, and linked via a pusher crossbeam with rods additional power cylinders.

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