JPS60221134A - Press die - Google Patents

Abstract

PURPOSE:To provide a press die enabling a deep drawing with a simple structure by to press a material between an upper die descending inside the upper annular body via the piston of a cylinder and a rubber filled on a die cushion inside the lower annular body. CONSTITUTION:In the press die consisting of an upper die 2 being fixed to a piston 3 of a cylinder 4 provided inside the upper annular body 7 attached to an upper die plate 1 and a rubber 15 of as a lower die being filled on a cushion bar 12 provided inside a lower annular body 9 of lower die and the upper part of backing plate 14, said upper annular body 7 is descended by a slide (figure omitted) via the upper die plate 1 to sandwich a material between with the lower annular body 9. The piston 3 is then descended by the air pressure supplied from air supply routes 5, 6 to advance a forming part 2a of the upper die 2 towards the above rubber 15 and the deep drawing is subjected on the material.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press mold, and more particularly to a press mold using a rubber material for the lower mold.

1-11 It has been known for a long time to utilize the elasticity of rubber and use rubber as one of the punches or dies to perform various processes such as sheet metal. Page'' introduces that since no impact force is applied to the mating mold, inexpensive mold materials can be used, and the structure and installation of the mold are simple.

By the way, this type of press that has been known in the past has not taken deep drawing into consideration.

An object of the present invention is to provide a press die that uses rubber for the lower die and incorporates a Gui cushion to enable deep drawing.

Koyo Stand II The present invention provides an upper ring body including an upper mold having a piston formed in the middle of the upper mold plate, a cylinder that fits on the outer periphery of the upper mold and can supply fluid pressure above and below the piston; a lower ring body corresponding to the upper ring body, a cushion pad accommodated in the lower ring body, a catch that slides with the lower ring body on the outside of the cushion butt, and an upper part of the cushion butt and the catch. The mold is equipped with a filled rubber, the upper plate is mounted on a slide, the lower ring body is mounted on a bolster, and the press molding process is performed by sandwiching the material between the upper ring body and the lower ring body. .

The drawing shows a press die, and the slide and bolster are omitted. An upper mold 2 is attached to the lower surface of an upper mold plate l, and the upper mold plate l is fixed to a slide. A piston 3 is formed in the middle of the upper mold 2, and the piston 3 is housed in a cylinder 4 fitted to the outer periphery of the upper mold 2.
Air supply passages 5 and 6 for alternately pressing both sides of the cylinder 4 are provided to supply air pressure to the upper chamber 4a and lower chamber 4b of the cylinder 4.

The cylinder 4 is formed with an upper ring body 7 that reaches beyond the molding part 2a of the upper mold 2, and a guide ring 8 is provided at the tip edge.

Reference numeral 9 denotes a lower ring body for attaching a lower mold, and a flange 10 for attaching a bolster is provided at the lower end, and the upper end is attached to the upper ring body 7.
It corresponds to Also, the center of the lower end of the lower ring body 9 has a through hole 1.
1 is provided, and a cushion pad 12 is inserted into the lower ring body 9 through the through hole 11.
A seat 14 on which the lower ring body 9 slides is housed. On the inside of the lower ring body 9, the upper parts of the cushion pad 12 and the seat 14 are filled with rubber 15.

The right half of the drawing shows the state immediately before processing with the material m being held between the lower ring 9 and the upper ring 7, and the left half shows the finished processing. While the slide is at the top dead center and descending toward the bottom dead center for molding, air pressure is supplied from the air supply path 6 of the cylinder 4 to the cylinder lower chamber 4b,
Lower the slide while keeping it on the right side of the drawing.

In the example, the rubber used as the lower mold is silicone rubber with zero hardness, and the material m held between the upper ring body 7 and the lower ring body 9 is moved downward by the slide to resist the pressure in the lower chamber 4b. and lower the upper mold 2. In addition, as the upper die 2 descends, the cushion pad 12 also descends against the pressure of the Gui cushion.
When the slide moves down a predetermined stroke and reaches the state shown on the left side of the drawing, the material is molded into a product M that conforms to the shape of the upper mold.

The rubber 15 receives a compressive load during molding, but the volume of the upper mold 2 is the cushion hole N2, and the catch 14 is L-shaped 2.
The material was accommodated by falling at the same time as the material m.
The cushion nod 12 descends to absorb the volume. The lower play (13) of the cushion knot 12 serves to receive the pressure of the gou cushion with a small surface when high pressure is required just before bottom dead center. Further, the pressure for cooking rice may be normal pressure.

When the slide passes the bottom dead center and ascends, air pressure is supplied to the cylinder 4 from the upper air supply path 5 to supply pressure in the cylinder upper chamber 4a and take out the product from the upper die 2.

Note that the material that can be molded in the present invention may be either a resin plate or a metal plate and can be processed in warm or hot conditions.

Processing conditions depending on the type of resin are as follows.

The present invention enables deep drawing with a mold using rubber, and has the effect of being applicable to both resin plates and metal plates.

[Brief explanation of the drawing]

The drawing is a front center sectional view of the assembled mold of the present invention, with the right side from the center line showing the state immediately before processing, and the left side showing the state at the end of processing. 1... Upper mold plate 2... Upper mold 2a... Molding part 3... Piston 4... C') 7f 4a... Cylinder upper chamber 4b...
・Cylinder lower chamber 5.6...Air supply path 7...Upper ring 8...Guide ring 9...Lower ring 1O...Flange U...Through hole
12...Cushion pad 13...Lower plate 1
4...Catch 15...Rubber patent applicant AIDA Engineering Co., Ltd. agent
Patent attorney Tsuki Nakayama

Claims (1)

[Claims] The upper mold plate has an upper mold with a piston formed in the middle,
An upper ring body including a cylinder that fits on the outer periphery of the upper mold and can supply fluid pressure above and below the piston, a lower ring body corresponding to the upper ring body, and a cushion butt and a cushion housed in the lower ring body. It is provided with a catch that slides with the lower ring on the outside of the bat, and rubber filled in the upper part of the cushion butt and the catch, and the upper plate is attached to the slide and the lower ring to the bolster. Characteristic press mold.