JP6779428B2 - Transfer device - Google Patents

Description

The present invention relates to a transfer device that supplies a work material to a metal press machine.

When a metal part is press-molded to manufacture a product, the more complicated the shape, the more press operations are required. In such a case, by arranging the press dies in a row and sequentially moving the work material, it is possible to manufacture a metal part having a complicated shape with one press machine. At this time, a transfer device is used to move the work material.

The configuration of a general two-dimensional transfer device is shown in FIG. In (a), the work material 101 is placed on each of the work material stages 31 arranged in a row when the upper mold is raised. A pair of arms 21 are arranged on both sides of each work material stage 31.

In (b), the arm 21 is extended by the arm driving means 22 to hold the work material 101. Since the arm 21 and the arm driving means 22 are installed on the transfer bar 11, the transfer bar 11 moves to the lower part of the drawing in (c), so that each work material is moved to the next work material stage 31. Sent.

In (d), each work material 101 is placed on a new work material stage 31 by degenerating the arm 21. In this state, as shown in (e), the upper mold 32 is lowered to press-mold the work material 101. At this time, as shown in (f), the transfer bar 101 returns to its original position. By repeating this series of operations, the work material 101 can be sequentially transferred.

However, when the shape of a part becomes complicated, the number of press operations increases, and the press dies must be arranged in accordance with the number of press operations, which causes a problem that the press machine becomes large.

In order to solve the above problems, for example, Patent Document 1 proposes a multi-row transfer device in which a transfer slide plate is provided with a plurality of multi-row grooves and a work material is held in the grooves. In this technology, by moving the multi-row transfer slide plate, it is possible to move a plurality of work materials at the same time, but a means for holding and releasing the work material in each groove of the transfer slide plate is provided. Since a plurality of transfer slide plates must be provided, the structure of the transfer slide plate becomes complicated, which leads to an increase in manufacturing cost. Further, since the transfer slide plate is a reciprocating type, if the transfer slide plate is reciprocated for each press operation, the number of materials to be held is reduced, and if the transfer slide plate is returned for each multiple press operations, the transfer slide The operation of the plate becomes discontinuous, causing problems in cooperation with the press machine. In addition, as the transfer slide plate moves, the work material in the groove moves linearly, and although many products can be manufactured at the same time, the shape is complicated and many dies are used. In the case of products, the transfer slide plate becomes long, and as a result, the press machine must be enlarged.

Further, in Patent Document 2, the reference plate is composed of a plurality of lines, and the workpieces located on the reference plates are sequentially moved by the transfer unit at the same time, so that a plurality of products can be produced at one time. A transfer mold has been proposed. In this technique as well, only by providing a plurality of reference plates, the work material only moves linearly on each reference plate. Therefore, the same problems as in the case of Patent Document 1 remain.

Japanese Unexamined Patent Publication No. 8-252698 Special Table 2015-514592

The present invention has been made in view of the above-mentioned problems of the conventional technology, and realizes a compact size of the press machine by moving the work material in a zigzag pattern instead of linearly, thereby reducing the cost. That is the issue.

In order to solve the above-mentioned problems, in the transfer device according to the present invention, a pair of transfer bars arranged in parallel with each other, having a plurality of holding means capable of holding and releasing the work material, and movable back and forth, left and right, or up and down. In the transfer device including the driving means for moving the transfer bar back and forth, left and right, or up and down, the holding means is configured to move the material to be processed in a zigzag manner. In two-dimensional transfer, the transfer bar moves only back and forth and left and right, whereas in three-dimensional transfer, up and down movement is added to it. Therefore, the present invention can be applied to both two-dimensional and three-dimensional transfers.

It is preferable that each of the plurality of holding means includes a pair of arms that can be expanded and contracted in a direction perpendicular to the transfer bar.

When moving the work material, it is preferable that the arms of the adjacent holding means operate in the direction opposite to the length direction of the arms. When moving the work material, there are cases where the material itself is moved and cases where the material is placed on a jig or the like and moved together with the jig, but it is desirable to be able to handle both of these.

It is also preferable that the work material stages are provided in two rows in parallel, and the arms are configured to alternately move the work material to the first row stage and the second row stage.

In the transfer device according to the present invention, the press forming distance can be shortened by moving the work material in a zigzag rather than linearly, and the press machine can be miniaturized, so that the cost of the product can be reduced. Become.

Hereinafter, preferred embodiments of the present invention will be described based on examples. FIG. 1 shows an operation description of the transfer device according to the present invention. The basic configuration of the transfer device according to the present invention is almost the same as that of the conventional transfer device. A plurality of arms 21 and driving means 22 for the arms are arranged in each of the pair of transfer bars 11 and 12. The difference is that in the conventional transfer device, the stage row of the work material is one row, whereas in the transfer device according to the present invention, there are a plurality of stage rows.

The operation of the transfer device according to the present invention will be described with reference to FIG. In (a), the work material 101 (A, B, C, D, E) is placed on each work material stage 31 of the first stage row 1 and the second stage row 2, and each work material stage. The arm 21 corresponding to 31 extends to hold the work piece 101.

Next, in (b), the pair of transfer bars 11 and 12 move downward in the figure (in the direction of the arrow), and the arm 21 holding the work piece A is extended on the right side to the left side. Shrinks and is conveyed to each work material stage 31 on the second stage row 2 side. The arm 21 holding the work material B is conveyed to each work material stage 31 on the first stage row 1 side by extending the left side and contracting the right side. The other work materials C, D, and E are also conveyed to the next stage in the same manner.

In (c), each arm 21 releases the work piece 101 and returns to a fixed position. After that, in (d), the pair of transfer bars 11 and 12 returns to the upper side (arrow direction) in the figure. In this way, the pair of adjacent arms 21 expands and contracts in opposite directions to convey the work material 101 to the first stage row 1 and the second stage row 2 in a zigzag manner.

Another embodiment of the transfer device according to the present invention is shown in FIG. In the embodiment shown in FIG. 1, the workpiece 101 is supported and held from both sides, but in this embodiment, the arm 22 is arranged only on one side of the workpiece stage 31. Along with this, the transfer bar 21 is also arranged on only one side. In this embodiment, since the transfer bar, the arm, and the arm driving means are arranged on only one side, the member cost is reduced, but the arm needs to be provided with the opening / closing means in order to hold the work material.

FIG. 4 shows an explanatory diagram of the effect of the transfer device according to the present invention. (A) is a conventional transfer device, and by arranging each work material stage 31 in one row, a length of “L” is required as a whole. (B) is a transfer device according to the present invention, in which the overall length is increased by arranging the work material stages 31 alternately in the first stage row 1 and the second stage row 2 and shifting their positions from each other. It becomes "l". As is clear from this figure, the processing range can be reduced by using a plurality of stages of the material to be processed.

In the transfer device according to the present invention, the press forming distance can be shortened by moving the work material in a zigzag rather than linearly, and the press machine can be miniaturized, so that the cost of the product can be reduced. Become. Therefore, it can greatly contribute to the manufacture of metal parts having complicated shapes.

It is explanatory drawing explaining the operation of the transfer apparatus by this invention. It is explanatory drawing explaining the operation of the conventional transfer apparatus. It is explanatory drawing which shows another Example of the transfer apparatus by this invention. It is a figure explaining the effect of the transfer apparatus by this invention.

1 1st stage row 2 2nd stage row 11 Transfer bar 12 Transfer bar 21 Arm 22 Arm driving means 31 Work material Stage 32 Upper mold 101 Work material

Claims (1)

A pair of transfer bars arranged parallel to each other, having a plurality of holding means capable of holding and releasing the material to be processed, and movable back and forth, left and right, or up and down, and for moving the transfer bar back and forth, left and right, or up and down. In a transfer device consisting of a driving means
Each of the plurality of holding means includes a pair of arms that can be expanded and contracted in a direction perpendicular to the transfer bar.
Two rows of stages for the work material are provided in parallel.
When the work material is moved, the arms of the adjacent holding means operate in opposite directions with respect to the length direction of the arms, so that the work material is moved into the first row and the second row of the stage. A transfer device characterized in that it is configured to move alternately in rows .