JPS6317538Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for transferring two blanks in a transfer press.

Conventionally, when blanks are punched out from plate materials using a transfer press and processed, the blanks are punched out in a staggered manner by zigzag blanking and processed one by one in order to improve the efficiency of use of the plate materials.

In recent years, it has become desirable to feed and process two identical blanks at the same time in order to improve production. In this case, in order not to reduce the usage efficiency of the plate material, it is necessary to punch out two blanks at the same time in a staggered manner and to pass them to the feed bar of the transfer, it is necessary to line them up on the feed line of the feed bar.

The purpose of the present invention is to meet this demand and provide a two-blank shifting device in a transfer press that aligns two blanks in a staggered positional relationship on the feed line of the feed bar using the motion of the feed bar. It's about doing. Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, an example of a transfer press 1 is shown. A pair of feed bars 2, 2 are coupled to the transfer unit 3 so as to provide advance return motion in its longitudinal direction and to be slidably guided in a direction perpendicular thereto. Further, the feed bar 2 is connected to the clamp units 4, 4 in a direction perpendicular to the longitudinal direction of the clamp units 4, so that the feed bar 2 is given a clamping/unclamping motion of approaching and separating from each other, and is slidably guided in the longitudinal direction.
A plate material 7 is fed into a mold (not shown) for the first step of the transfer press 1 in the direction of an arrow P, and blanks 8 are simultaneously stamped at two locations A and B in a staggered manner. A chute 9 is provided from the lower part of the mold in the first step to the next idle stage 10, and the punched blank 8 falls onto the chute 9. A pusher 5 is provided at one end of the bed of the press 1. The pusher 5 is guided in the advance direction by the machine body, and is connected to the feed bar 2 while being slidably guided in the clamp direction. The pusher bar 6 of the pusher 5 is on the rear side of the blank 8 (left side in the figure) when the feed bar 2 reaches the return end.
Returning to , as the feed bar 2 advances, the blank 8 is pushed out along the chute 9 to a fixed position on the idle stage 10. As shown in FIG. 2, each time the plate material 7 is fed in the direction of the arrow P by a certain pitch a, blanks 8 are simultaneously punched out at two locations A and B, so as to minimize scrap.

In FIGS. 3, 4, and 5, the feed bars 2, 2 are shown at the return end. A push pin 11 is provided on one side of the pair of feed bars 2 and is slidable in the clamping direction. The push pin 11 is urged toward the clamping direction by a spring 12, and is prevented from coming off at the opposite end. A rack rod 13 is provided at a position facing the push pin 11 and is slidably guided by the body in the clamping direction and biased toward the push pin 11 by a spring 14. The rack rod 13 is prevented from coming out by a stopper 15 so that it stops at a position slightly apart from the push pin 11 when the feed bar 2 is in the position shown in FIG. 3 before starting the clamping motion. A pinion 17 fixed to a vertical shaft 16 rotatably held in the machine body is engaged with the rack portion of the rack rod 13. A central portion of a lever 18 is fixed to the upper end of the shaft 16. One end of receiving plates 19, 19 is pivotally attached to both ends of the lever 18, respectively. A roller 21 is rotatably provided on a central shaft 20 extending downward from the receiving plate 19, and is guided and supported by a guide 22. The guides 22, 22 are fixed horizontally on the bolster 24 from the center of the fixed position of the idle stage 10, where the blank material 8 is pushed out by the pusher bar 6, to the fixed position on the feed line of the feed bars 2, 2 shown by the arrow Q. ing. One of the guides 22 is provided with a stopper 23 that abuts against the roller 21 to position it when the center of the receiving plate 19 comes to a fixed position on the feed line Q. Feed bars 2, 2 have 2 wheels stopped at a fixed position on the feed line Q.
The fingers 25 are placed in a position where they can hold the blanks 8.
Two pairs are provided.

Next, we will discuss the effect. In Figs. 1, 3, 4, and 5, the feed bar 2 is in the third position.
When the return end shown in the figure is reached, the pusher bar 6 of the pusher 5 moves the blank 8 from the punched positions A and B along the chute 9, and moves the blank 8 over the receiving plates 19 and 19 which are stopped at the fixed positions. After completing the work of loading the vehicle, it has retreated to the position indicated by the dashed-dotted line. When the feed bar 2 starts its clamping motion from this state, the push pin 11 pushes the rack rod 13. At this time, since the spring 12 has a stronger urging force than the spring 14, the first spring 14 contracts, the rack rod 13 moves, and the lever 18 is rotated by an angle θ via the pinion 17 and the shaft 16, as shown in FIG. Reach the position shown. During this time, the receiving plate 19 is moved by the roller 21 of its central axis 20.
is guided by the guide 22 and stops at the position where the roller 21 abuts against the stopper 23 of the guide 22. That is, the center of the receiving plate 19 is connected to the feed line Q.
The two blanks 8 are therefore each moved to a fixed position on the feed line Q. The movement up to this point ends with the first half of the clamping motion of the feed bar 2, and thereafter the spring 12 contracts to absorb the movement of the second half of the clamping motion of the feed bar 2. The fingers 25 of the feed bar 2 clamp the blank 8 stopped on the feed line Q as shown in FIG. 5, and the clamping movement is completed. Subsequently, the feed bar 2 starts an advance movement along the feed line Q, and the push pin 11
slides along the end surface of the rack rod 13, and when it comes off, it is restored by the biasing forces of the respective springs 12 and 14. When the rack rod 13 is restored, the receiving plate 19 returns along the guide 22 via the pinion 17 and lever 18. At this time, as the pusher 5 moves forward together with the feed bar 2, the next blank 8 is pushed by the pusher bar 6, moves on the chute 9, and is placed on the restored receiving plate 19. After the feed bar 2 passes the clamped blank 8 onto a mold (not shown) for the next process, it unclamps and returns to the state shown in FIG. 3. The above-mentioned process is repeated to continue the pressing operation.

As is clear from the above explanation, according to the present invention, two blanks punched simultaneously in a staggered manner from a sheet material can be rearranged on the feed line using the clamping motion of the feed bar, so that they can be easily transferred to the next process. The practical effects and advantages are extremely large, such as facilitating the conveyance of blanks by the feed bar and making it possible to efficiently press two blanks at the same time in subsequent steps.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the transfer press showing the arrangement of the embodiment, Fig. 2 is a plan view of the plate material, Fig. 3 is a plan view of the main part showing the state before clamping, and Fig. 4 shows the clamped state. Main part plan view, Figure 5 is 4th
FIG. 2 is a longitudinal cross-sectional view of a main part taken along the - arrow direction in the figure. 1 is Transfer Press, 2 is Feed Bar,
3 is a transfer unit, 4 is a clamp unit, 5 is a pusher, 6 is a pusher bar, 7 is a plate, 8 is a blank, 9 is a chute, 10 is an idle stage, 11 is a push pin, 12 is a spring, 13 is a rack bar, 14 is a spring, 15 is a stopper, 16 is a shaft, 17 is a pinion, 18 is a lever, 19 is a receiving plate, 20 is a central shaft, 21 is a roller, 22 is a guide, 23 is a stopper, 24 is a bolster, and 25 is a finger. be.

Claims (1)

[Scope of utility model registration request] In a transfer press, in which two simultaneously punched blanks are displaced onto the feed line of a transferer and fed simultaneously, a push pin that is biased by a spring in the clamping direction of the feedbar and that is slidable is attached to the feedbar of the transferer. A rack bar is provided in correspondence with the push pin and is biased by a spring in a direction opposite to the direction in which the push pin is biased, and is slidable on the machine body, and a rack portion of the rack bar and A pinion having a vertical shaft that engages with the machine body and is rotatably held in the machine body is provided, a center part of a lever is fixed to the shaft of the pinion, one end part of a receiving plate is connected to both ends of the lever, The center axis of the receiving plate is
1. A device for shifting two blanks in a transfer press, characterized in that a guide is provided for guiding the blank from a position moved by a pusher to a position on a feed line of a transfer press.