JPS597531B2 - Press mold holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press mold holding device used to secure an appropriate gap between an upper mold and a lower mold during press mold storage and mold exchange work (mold setup work). .

As a conventional press mold holding device of this type, for example,
There is No. 4-37809.

This will be explained using the structure shown in FIGS. 1 and 2. As shown in the figure, a plurality of cylindrical holding members 3 made of an elastic material such as urethane resin or rubber are fixed to the lower mold 1 (or upper mold 2) to ensure a gap A with respect to the lower mold 1. It is constructed so that the upper die 2 can be supported in equilibrium, and at the same time, the holding member 3 can be bent and pressed as it is without removing the holding member 3 as shown in Fig. 1 during press working. It is something. In addition, 4 in the figure is the bolster of the press machine, 5
is a slide. According to this device, when storing the mold, the upper mold 2 is lifted up by the gap A with respect to the lower mold 1 and held in the same state, so the press mold can be stored with an extremely simple operation, and the mold setup work can be done easily. Even if the slide 5 is adjusted to a predetermined mold height and lowered to a position where it contacts the upper mold 2, the slide 5 and the upper mold 2 are automatically aligned and the holding member 3 Since the elastic deformation of This has the advantage that the removal work of the member 3 can be omitted and the mold setup work can be carried out quickly.

However, such conventional press mold holding devices lack durability because the holding member contracts and deforms with each stroke during press working, and especially in the case of urethane resin, it is difficult to restrict deformation to an extreme. Due to decreased durability, it was necessary to devise various ways to attach the structure to the mold.

This invention was made in view of the above-mentioned five problems, and the mold holding member is divided into two, a holding member attached to one mold, and another holding member detachable from the holding member, and the mold holding member is During setup work, both are used together as a holding member to ensure an appropriate gap between the upper and lower molds, and during normal press processing, only the other holding member is removed and the holding member is used. The purpose of the present invention is to solve the above-mentioned problems by providing a structure that does not shrink.

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 3 shows details of the mold holding member of the press mold holding device according to the present invention, and parts common to those in FIGS. 1 and 2 are given the same reference numerals. On the other hand, a plurality of holding members 10 are provided at appropriate positions on the lower mold 1 to support the upper mold 2 in a balanced state, and each holding member 10 is divided into a lower holding member 11 and an upper holding member 12 in the vertical direction. ing.

The lower holding member 11 is formed into a hollow cylindrical shape from an elastic body such as urethane resin or rubber, and has an inner cylindrical portion 11a.
It is held on the lower die 1 by a stud bolt 13 inserted into the lower die 1.

Note that the head 13a and shank 1 of the stud bolt 13
A gap H is formed between 3b and the inner cylinder portion 11a. The lower holding member 11 is designed to support the upper mold while separating the upper mold 2 from the lower mold 1 and maintaining an appropriate gap between them, against the weight of the upper mold 2 during mold storage. It has a height and elasticity (spring constant). On the other hand, the upper retaining member 12 is preferably formed of an elastic material such as urethane resin or rubber to have approximately the same diameter as the lower retaining member 11, and has a protrusion 14 on its lower surface that matches the inner cylindrical portion 11a of the lower retaining member 11. are integrated.

The fitting between the protrusion 14 and the inner cylindrical portion 11a allows for positioning when the top holding member 12 is placed on the lower holding member 11. Here, Atsupa-holding member 1
The material of the lower retaining member 12 does not necessarily need to be an elastic body as described above, and if the desired purpose is achieved with the height and elasticity of the lower retaining member 11, the upper retaining member 12 may be made of steel, plastic, or wood. It may also be composed of rigid bodies such as. Next, the operation of the device of the present invention will be explained mainly based on FIG.

However, for convenience of explanation, the left half of FIG. 4 shows the normal press working state with the top holding member 12 removed, and the right half of the same figure shows a setup in which the holding members 10 stacked on top of each other are contracted. The state of the mold matching during work. show. First, to set the press mold on the press machine, place the press mold on the bolster 4 of the press machine as in the conventional manner, and then press the slide 5.
Adjust the height of the mold to the specified mold height.

Then, the slide 5 is lowered to the bottom dead center, the lower surface of the slide 5 is brought into contact with the upper surface of the upper mold 2, and the upper mold 2 is fixed to the slide 5 using bolts or a die clamper (not shown).
Fixed to. At this time, since the upper mold 2 is elastically supported by the holding member 10, the mating force between the upper mold 2 and the slide 5 is precisely performed, and the slide 5 of the press machine can be safely moved to the bottom dead center. It can be lowered. In other words, even if the slide 5 is suddenly lowered relative to the upper mold 2, the impact when the slide 5 contacts the upper mold 2 is absorbed and alleviated by the elastic deformation of the holding member 10, and the slide 5, the upper mold 2, and the holding member 10 are damage is prevented. When the setup work is completed in this manner, only the top retaining member 12 is removed, and the slide 5 is moved up and down in the usual manner to perform press working.

Even if the slide 5 including the upper mold 2 descends to the bottom dead center during this pressing process, the lower holding member 11 after the upper holding member 12 is removed does not shrink at all, so its durability is reduced. This is a significant improvement, and it also prevents the holding member from flying off due to chips and cracks that occur over time, ensuring worker safety. In addition, when storing the press die, in the reverse procedure to the above, raise the slide 5 and overlap the upper holding member 12 with the lower holding member 11, then remove the upper die 2 from the slide 5 and place it on the holding member 10. Place it on the

Therefore, the upper mold 2 is kept raised with respect to the lower mold 1 by a certain gap. Note that the holding member 10 may be attached to the upper mold.

As is clear from the above description, in the press mold holding device of the present invention, the mold holding member is divided into two parts: a holding member attached to one mold and another holding member detachable from the holding member, At least the holding member attached to the mold is made of an elastic material, and the holding member is made inoperative by removing the separate holding member during press processing, which greatly improves the durability of the holding member compared to conventional devices. In addition to this, it also has the effect of preventing the holding member from scattering due to chips and cracks that occur over time, thereby ensuring safety for workers.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams showing the configuration of a conventional press, FIG. 3 is a detailed view of only the holding member of this press holding device, and FIG. 4 is the entire press holding device according to the present invention. FIG. 1...lower mold, 2...upper mold, 4...bolster, 5.
...Swid, 10... Holding member, 11... Lower holding member, 12... Top holding member.

Claims (1)

[Claims] 1. In a press mold holding device for interposing a plurality of holding members between an upper mold and a lower mold of a press mold to form a certain gap between the two molds, the holding member is attached to one mold. The holding member is divided into a holding member and another holding member that is detachable from the one holding member, and at least the holding member on the side that is attached to the mold is made of an elastic body, and when storing the mold, the holding member is separated from the one holding member. When the upper die is placed on the lower die with the holding members fitted together, the holding members counter the weight of the upper die and ensure a certain gap between the two dies, while at the same time When the other holding member is removed from the one holding member, the thickness of the other holding member and the thickness of one holding member are adjusted so that the one holding member does not come into contact with the other mold even when the upper mold is at the bottom dead center. A press type holding device characterized in that the height of the members and the spring constant of the one holding member are set respectively.