JPH05200454A - Automatic die changing device - Google Patents

Abstract

PURPOSE:To provide a high-performance automatic die changing device to reduce loss of time for the die change in the production of many kinds in small quantities in a press, etc. CONSTITUTION:Plural upper dies 2 are arranged on the circumference of an upper die table 1 rotated by an upper die actuator 5 round an upper die axis 4, plural lower dies 7 are arranged on the circumference of a lower die table 6 rotated by a lower die actuator 10 round a lower die axis 9, the upper die table 1 and the lower die table 6 are rotated according to the kinds of productions to set the upper die 2 and the lower die 7 automatically to a prescribed position. Consequently, the dies can be changed automatically and the subject automatic die changing device which can reduce loss of time for the die change is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic die changer for a press or the like.

[0002]

2. Description of the Related Art Recently, there has been a strong demand for reduction of die switching loss time in high-mix low-volume production.

A conventional mold device will be described below.
FIG. 2 shows a mold device of a conventional press machine. As shown in FIG. 2, the upper mold 15 is attached to a plate 16, and the plate 16 slides a slide shaft 17 up and down.
The lower die 18 is fixed to the press table 19.

The operation of the mold apparatus configured as described above will be described below. The ram 21 of the pressing machine 20 is lowered by hydraulic pressure, the plate 16 and the upper die 15 are pushed down, the workpiece 22 set in the lower die 18 is pressurized, and press working is performed.

[0005]

However, in the above-mentioned conventional structure, since the die replacement must be performed manually, in the case of high-mix low-volume production, it takes time to replace the die and a large loss time occurs. Therefore, there is a problem that productivity is significantly reduced.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an automatic mold changer capable of automatically changing molds.

[0007]

To achieve this object, the present invention provides a plurality of upper molds on the circumference of an upper mold table which is rotated by an upper mold actuator about an upper mold shaft, In addition, a plurality of lower molds are arranged on the circumference of a lower mold table that is rotated by a lower mold actuator around the lower mold shaft.

[0008]

With this configuration, the upper and lower mold tables can be rotated by the upper and lower mold actuators according to the product to be produced, and the required upper and lower molds can be automatically set.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a plurality of upper molds 2 are arranged on the circumference of an upper mold table 1 so as to be vertically slidable via springs 3. Upper mold table 1 is upper mold shaft 4
Is connected to the upper actuator 5. A plurality of lower molds 7 are arranged on the circumference of the lower mold table 6 so as to be vertically slidable via springs 8.
The lower die table 6 is connected to the lower die actuator 10 by a lower die shaft 9.

The operation of the automatic die-changing device constructed as described above will be described with reference to FIG. First, the upper mold 2 and the lower mold 7 corresponding to the product type are set at predetermined positions by rotating the upper mold table 1 and the lower mold table 6 by the upper mold actuator 5 and the lower mold actuator 10, respectively. Next, the ram 13 of the press machine 12 is lowered by hydraulic pressure to push down the upper mold 2. The upper mold 2 pushed down simultaneously lowers the lower mold 7 and the workpiece 14 set on the lower mold 7, and the lower surface of the lower mold 7 comes into contact with the press table 11 and at the same time, pressurization to the workpiece 14 starts. Press processing is performed. When the ram 13 rises after the completion of the press working, the upper die 2 and the lower die 7 are automatically raised to their original positions by the restoring forces of the spring 3 and the spring 8.

As described above, according to the present embodiment, the upper die table 1 and the lower die table 6 in which the plurality of upper die 2 and the lower die 7 are arranged in advance are provided with the upper die actuator 5 and the lower die table 5 according to the product type. By rotating the mold actuator 10,
Since the required upper mold 2 and lower mold 7 are automatically installed at predetermined positions, the molds can be automatically replaced and the loss time of the mold replacement can be reduced.

[0013]

As is apparent from the above description of the embodiments, the present invention rotates the upper mold table and the lower mold table having a plurality of upper molds and lower molds to rotate the upper mold table and the lower mold table according to the product type. Since the mold and the lower mold can be automatically installed in the predetermined positions, it is possible to automatically change the mold when producing a large amount of small quantities of various products, and to improve productivity by reducing the loss time of the mold change. The switching device can be realized.

[Brief description of drawings]

FIG. 1 is a front view of an automatic mold switching device according to a first embodiment of the present invention.

FIG. 2 is a front view of a conventional mold device.

[Explanation of symbols]

 1 Upper mold table 2 Upper mold 4 Upper mold shaft 5 Upper mold actuator 6 Lower mold table 7 Lower mold 9 Lower mold shaft 10 Lower mold actuator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoki Fukami 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A plurality of upper molds are arranged on the circumference of an upper mold table which is rotated by an upper mold actuator about an upper mold shaft, and a lower mold which is rotated by a lower mold actuator about a lower mold shaft. An automatic mold changer consisting of a plurality of lower molds arranged on the circumference of a mold table.