JPH0428658Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a press device used for punching workpieces, etc.

[Conventional technology]

Conventional press equipment is a press equipped with an upper die in which a punch is removably embedded in a punch plate, a lower die that presses a workpiece in cooperation with the upper die, and a press ram that moves the upper die up and down. When the mechanism is fixed on a base and the punch is to be replaced, the entire mold is removed from the base, carried to a separately prepared workbench, separated into an upper mold and a lower mold, and then the upper mold is disassembled. The structure is such that the punch can be replaced.

[Problem that the invention attempts to solve]

However, the above-mentioned work has to be done manually by workers, which is time-consuming and labor-intensive, resulting in poor work efficiency and a lack of safety.

[Means for solving problems]

In this invention, a punch plate is disposed below the fixed plate so as to be separable from the fixed plate, and the punch, which has a flange formed at the upper end of the punch plate, can be detached upwardly and downwardly. The press ram is fixed to the fixing plate and moves the upper die up and down. A press mechanism is disposed on the press portion of the base, and the press mechanism transfers the punch plate separated from the fixed plate from the press portion of the base to the replacement portion connected thereto, and the replacement portion. A transfer device is attached to the fixed plate or the press ram, and a fluid is attached to the fixed plate or the press ram to detachably support the punch plate from below and to bring the punch plate and the fixed plate into contact with each other or to separate them. By providing a pressure-driven clamp, the above-mentioned conventional problems are solved.

[Effect]

When it becomes necessary to replace the punch, with the upper mold in contact with the lower mold by the press ram, the clamp supporting the punch plate from below is driven by fluid pressure to separate it from the punch plate. After the punch plate, which is in contact with the fixed plate by the clamp, can be separated, the press ram is raised together with the fixed plate, the fixed plate and the punch plate are separated, and the collar of the punch is placed on the upper surface of the punch plate. The punch plate is then moved by a transfer device from the press part of the base to the replacement part connected thereto to replace the punch. Also,
After the punch has been replaced, the punch plate is returned to the press part by the transfer device, the press ram is lowered together with the fixed plate, the fixed plate and the punch plate are brought into contact, and then the clamp is driven by fluid pressure. The punch plate is supported from below by a clamp, and the punch plate is pressed and fixed against the fixed plate.

〔Example〕

1 and 2 show an outline of a press apparatus according to the present invention, and C in the figures is a base. This base C consists of a press part X and an exchange (working) part Y integrally connected thereto. A press mechanism D, which will be described later, is disposed in the press portion X of the base C. E is a transfer device attached to the base C, which separates the punch plate 4 of the press mechanism D from the press ram 1 (see Fig. 3) and moves it to the replacement part Y, and also transfers the punch plate 4 to the press part X. It is now possible to return to

FIG. 3 shows the detailed structure of the press mechanism D. In this embodiment, the die set 2 and the upper die backing plate 3 constitute the fixed plate P, and the upper die backing plate 3 and the punch plate 4 constitute the fixed plate P. They are not connected to each other and have a structure that allows them to be separated. A fluid pressure-driven clamp 11 is provided on the side surface of the fixed plate P to detachably support the punch plate 4 from below and press the punch plate 4 against the upper backing plate 3. Then, by pressing the clamp 11 against the punch plate 4, the punch plate 4 and the fixed plate P are brought into contact with each other,
Moreover, by separating the clamp 11 from the punch plate 4, the punch plate 4 and the fixed plate P can be separated. Further, in the punch plate 4, a punch 5 having a flange portion 5a at its upper end is installed in an inverted convex-shaped through hole of the punch plate 4 or supported by a presser plate 6. ing. As a result, the punch 5 is transferred to the punch plate 4.
It is possible to separate upwardly from the line, but not downwardly.

In addition, in this embodiment, the punch plate 4
and the stripper bucking plate 7,
A spring 10a is incorporated to bias these in the direction of separating them from each other. In the above, the die set 2, the upper die backing plate 3, the stripper backing plate 7, and the stripper plate 8 constitute an upper die A, and under the upper die A, a work piece is placed in cooperation with the upper die A. A lower mold B is provided for pressing the.

In the figure, 12 is a guide post, 13 is a guide bush, 14 is a ball retainer, 15 is a mold positioning member, and 16 is a set clamp.

Therefore, when punching a workpiece using the press mechanism configured as described above, it is sufficient to press the punch plate 4 against the upper backing plate 3 using the clamp 11 and fasten it to the press ram 1, and the operation of each part is the same as in the conventional method. The operation is similar to that in a press mechanism.

When replacing the punch 5, the press ram 1 is first lowered to close the mold, and at that point the clamp 11 is released so that the punch plate 4 and the upper die backing plate 3 can be separated. do. Next, when the press ram 1 is raised to separate the upper mold bucking plate 3 from the punch plate 4, the head of the collar portion 5a of the punch 5 becomes visible from above. In this state, the transfer device E is activated to move the punch plate 4 together with the lower mold B from the press part X to the replacement part Y, where the punch 5 is replaced. Since there is nothing obstructing the press ram 1, etc., the punch 5 can be replaced easily, quickly, and safely without danger.

By the way, in the above embodiment, the clamp 1
1 is attached to the fixed plate P, but it may also be attached to the press ram 1. Further, although a die set 2 and an upper backing plate 3 are provided as a fixed plate P on the lower surface of the press ram 1, the present invention can be similarly applied to a press mechanism in which only the die set 2 is fixed.

The transfer device E shown in the figure also has a configuration in which a connecting member 20, which is attached to the piston rod 18 of the cylinder 17 and protrudes upward from the slit 19 of the base C, is connected to the lower die B, punch plate 4, etc., and moves them. However, there are various types, such as those in which the nut-structure coupling member is moved by rotation of a screw by a motor or the like, and those in which the coupling member is pulled using a chain or wire, and the specific structure thereof is arbitrary.
Furthermore, in the embodiment shown in the figure, the lower mold B is also moved to the replacement part Y, but
It is also possible to move only the punch plate 4.

Needless to say, after the punch 5 has been replaced, the transfer device E is operated again to return the punch plate 4 and the like to the press portion X of the base C.

[Effect of idea]

As explained above, in the present invention, a punch plate is disposed below a fixed plate so as to be separable from the fixed plate, and a punch having a flange formed at the upper end of the punch plate can be detached upwardly. an upper mold that is attached in such a way that it can press the workpiece in cooperation with the upper mold, and a lower mold that is fixed to the fixing plate and that presses the upper mold up and down. A press mechanism having a press ram is disposed on the press part of the base, and the base is equipped with a punch plate separated from the fixed plate, and a press mechanism with a press ram connected thereto from the press part of the base. The fixing plate or press ram is provided with a transfer device for moving the part and from the replacement part to the press part, while the fixing plate or press ram is
Since the punch plate is detachably supported from below and is provided with a fluid-pressure-driven clamp that brings the punch plate and identification plate into contact with or separates them, the press ram connects the upper die to the lower die. While in contact with the fixed plate, the clamp supporting the punch plate from below is driven by fluid pressure to separate it from the punch plate, and the punch plate, which is in contact with the fixed plate by the clamp, can be separated. After the press ram is in the state, the press ram is raised together with the fixed plate, the fixed plate and the punch plate are separated, and the collar of the punch is exposed on the upper surface of the punch plate, and further,
The punch plate is moved from the press part of the base to the replacement part connected thereto by the transfer device and the punch is replaced, so that the punch plate separated from the fixed plate is immediately moved to the replacement part. At the same time, the punch can be replaced easily, quickly, and safely.

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view showing an outline of the press apparatus of the present invention, and FIG. 3 is a sectional view of the main parts of the press mechanism. A...Top mold, B...Bottom mold, C...Base, D...
Press mechanism, E... Transfer device, P... Fixed plate, X... Press part, Y... Replacement part, 1...
Press ram, 4... punch plate, 5... punch, 5a... collar, 11... clamp.

Claims (1)

[Scope of utility model registration request] A punch plate is disposed below the fixed plate so as to be separable from the fixed plate, and the punch plate has a flange formed at its upper end so that the punch can be detached upwardly but cannot be detached downwardly. A press mechanism includes an upper die mounted in the above-mentioned state, a lower die that presses a workpiece in cooperation with the upper die, and a press ram fixed to the fixed plate and that moves the upper die up and down. The punch plate separated from the fixing plate is arranged on the press part of the base, and the punch plate separated from the fixed plate is transferred from the press part of the base to a replacement part connected thereto, and from the replacement part to the press part. A transfer device is attached to the fixed plate or the press ram, and a fluid pressure-driven clamp is provided on the fixed plate or press ram to detachably support the punch plate from below and to bring the punch plate and fixed plate into contact with or to separate them. A press device characterized by being provided with.