JPH0515435Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to an improvement of a three-post transfer press.

Conventional technology A transfer press uses a pair of transfer bars to sequentially transport a material to multiple processing stations and sequentially perform multiple press processes to form a molded product. Since the crown is long, the crown housing the slide drive unit is supported by a plurality of uprights, for example, a total of six uprights, three in the front and three in the rear.

In addition, the transfer press described above has, for example, two moving bolsters that can be moved in and out of the press body so that the mold can be easily replaced during off-site setup. A mold is placed at each station.

These moving bolsters usually run on rails installed in the front and back direction of the press body so that they can be moved in and out of the press body, but when moving each moving bolster into and out of the press body, care must be taken to avoid interference with the uprights. Conventionally, as shown in FIG. 3, the width _L2 of the moving bolster b is set smaller than the interval _L1 between the uprights a.

For this reason, when the moving bolsters b are accommodated in the press body c from the front and rear directions, a gap L ₄ larger than the width L ₃ of the upright a is generated between each moving bolster b.

This gap L ₄ is normally used for processing stations W ₁ , W ₂ of mold d placed on moving bolster b...
It is larger than the pitch P between.

Therefore, if you try to perform continuous machining on machining stations W ₁ and W ₂ on moving bolster b on the upstream side and machining stations W ₃ , W ₄ , and W ₅ on moving bolster b on the downstream side, each moving bolster b An idle station is installed between the processing stations W ₂ and 2.
When transporting materials to W ₃ , it is necessary to temporarily place them at the idle station.

This idle station not only does not contribute to the machining process, but also increases the total number of processes, so if the idle station is installed on the back side of the central upright a, as in the transfer press shown in Figure 3, there is a problem that productivity will decrease. be.

In order to improve this problem, as shown in FIG.
A transfer press has also been proposed in which the gap L ₄ between the uprights is made smaller than the width L ₃ of the upright a, so that there is no need to provide an idle station on the back side of the upright a.

Problems to be Solved by the Invention However, in the transfer press described above, in order to move the moving bolster carried into the press body in the lateral direction, it is necessary to provide wheels for traversing, rails for traversing, etc. There is a problem with increasing costs.

This invention was made to improve the above-mentioned problems, and the purpose is to provide a transfer press with a simple configuration that does not require an idle station between the moving bolsters housed in the press body. It is.

Means and operation for solving the problem In order to achieve the above object, this invention has two moving bolsters that can be moved in and out of the press body in the front and back directions, and a plurality of processing stations for each moving bolster. In the multi-step molding transfer press installed, press from the front and rear so that the pitch between the final processing station of the upstream moving bolster and the first processing station of the downstream moving bolster is equal to the pitch between other processing stations. Each moving bolster is housed within the main body, and the width of the central upright located between each moving bolster is smaller than the interval between each moving bolster, so there is no need to provide an idle station between each moving bolster. Productivity is improved, and since there is no need to move the moving bolster inside the press body, there is no need for wheels or rails for the movement.

Embodiment An embodiment of this invention will be described in detail with reference to the drawings.

In the figure, 1 is the main body of the transfer press,
Above the bed 2, in the transport direction of material A (arrow B)
A total of six uprights 3, three on the front side and three on the rear side, are erected apart from each other, and a crank 4 housing a slide drive mechanism (not shown) is supported between the upper ends of these uprights 3. .

Reference numerals 5 and 6 denote two moving bolsters that can be taken in and out of the press body 1 from the front of the press body 1. Two molds 7 are placed on one moving bolster 5, and two molds 7 are placed on the other moving bolster 6.
Three molds 7 are placed at equal pitches in the material conveyance direction B, and these moving bolsters 5 and 6 are connected to rails 8 installed from inside the press body 1 to the front or rear of the press body 1. Up arrow C
It is possible to move freely in any direction.

On the other hand, among the uprights 3 of the press body 1, the central upright 3b is the left and right uprights 3a, 3c.
It is formed to be narrower in advance.

That is, the two moving bolsters 5,
When a plurality of molds 7 are arranged at equal pitches on the press body 1, it is necessary to ensure the pitch between the molds 7 by bringing the moving bolsters 5 and 6 closer together within the press body 1. However, if the moving bolsters 5 and 6 are placed close to each other within the press body 1,
Moving bolster 5 on central upright 3b,
6 interfere with each other, and the moving bolsters 5 and 6 cannot be pulled out to the front of the press body 1 as they are.

Therefore, in this invention, the width of the central upright 3b is made narrow so as not to interfere with each of the moving bolsters 5 and 6 when they are pulled out.

That is, the width W of the central upright 3b is formed to be slightly narrower than the distance l between the moving bolsters 5 and 6 housed within the press body 1.

This allows the processing stations W ₁ to W ₅ on each of the moving bolsters 5 and 6 to be continuous, and also allows the linear rail 8 installed linearly from inside the press body 1 to the front or rear of the press body 1. Since each of the moving bolsters 5 and 6 can be taken out and put in along the mold 7, the mold 7 can be easily replaced.

In the figure, 9 is a slide, 10 is a transfer bar that clamps the material A and sequentially conveys it to each processing station _W1 to _W5 , and 11 is a driving device thereof.

Effects of the invention As detailed above, this invention accommodates each moving bolster from the front and back so that the processing station installed on each moving bolster is continuous within the press body, and is located between each moving bolster. Because the width of the central upright is narrower than the distance between each moving bolster,
Even if the moving bolster is taken in and out of the press body when replacing the mold, the moving bolster and upright will not interfere.

Further, since it is not necessary to provide an idle station between each moving bolster, there is no idle station that does not contribute to machining, and productivity is improved.

Furthermore, since there is no need to traverse the moving bolsters in the direction toward each other after storing them in the press body, there is no need for wheels or rails for traversing, which reduces costs, and the center between each upright is the center of the load. Therefore, no unbalanced load occurs during molding.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with FIG. 1 being a front view, FIG. 2 being a cross-sectional view, and FIGS. 3 and 4 being explanatory views of a conventional transfer press. 1 is the press body, 3b is the central upright, 5,
6 is a moving bolster, and W ₁ to W ₅ are processing stations.

Claims (1)

[Scope of utility model registration request] A multi-step molding transfer in which a plurality of processing stations W ₁ , W _{2 .} . . are installed for each moving bolster 5, 6 on two moving bolsters 5, 6 that can be moved in and out of the press body 1 in the front and rear directions. In the press, a pinch between the final processing station W ₂ of the upstream moving bolster 5 and the first processing station W ₃ of the downstream moving bolster 6 causes the other processing stations W ₁ , W ₂ , W ₄ ,
Each moving bolster _5, 6 is housed in the press body 1 from the front and back direction so as to be equal to the pitch between each moving bolster 5, and the width W of the central upright 3b located between each moving bolster 5, 6 is A transfer press formed by making the interval between 5 and 6 smaller than l.