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Opening and closing device for mould and mould using the same

A shutter and mold technology, applied in the field of molds, can solve the problems of wear, insufficient closing force, unable to provide delayed mold opening effect, etc., and achieve the effects of improving service life, improving stability and simple structure

Inactive Publication Date: 2008-04-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the plastic collar of this type of shutter is easily worn due to repeated closing and separation of the male and female mold bodies, resulting in insufficient closing force provided by the shutter when the subsequent male and female mold bodies are molded together, and cannot provide ideal Delayed mold opening effect

Method used

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  • Opening and closing device for mould and mould using the same
  • Opening and closing device for mould and mould using the same
  • Opening and closing device for mould and mould using the same

Examples

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0012] Referring to FIG. 1 , a mold 100 provided by an embodiment of the present invention includes a male template 10 , a female template 20 and at least one shutter 30 . The shutter 30 is used to delay mold opening between the male template 10 and the female template 20 . The shutter 30 includes a guide pin 31 and a guide pin bushing 32 .

[0013] The guide pin 31 can be fixed on the fixed plate (not shown) on the male template 10 side or be fixed on the male template 10, when the guide pin 31 is fixed on the male template 10, the guide pin 31 can be connected with the male template 10 made into an integral structure. In this embodiment, the guide pin 31 is fixed on a fixing plate (not shown) on one side of the male template 10 , and the guide pin bushing 32 is fixed on the female template 20 .

[0014] Please refer to Fig. 2, described guide pin 31 has ...

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PUM

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Abstract

The present invention provides an opening and closing device for die. It includes a guide pin and a guide pin liner. The described guide pin has a straight bar portion into which the guide pin line can be inserted, on the described straight bar portion a containing hole is set, in the described containing hole a spring and a rigid ball are contained, on end of the described spring is fixed in the bottom portion of said containing hole, its another end is connected with the rigid ball. When the spring is being in natural state, the partial rigid ball is exposed from the containing hole, and the inner wall of the described guide pin liner is equipped with a recessed groove which can be used for containing the above-mentioned partial exposed rigid ball after the die is closed. Said invention also provides a die using said opening and closing device.

Description

technical field [0001] The invention relates to mold technology, in particular to a shutter for a mold and a mold using the shutter. Background technique [0002] After the common mold is pressed (or injected), in order to keep the finished mold body in an initial reusable and unimpeded clean state, the spraying device (nozzle) is usually driven away from the male and female mold bodies to avoid mold After opening, the material of the nozzle still drips continuously; then open the male and female mold bodies. [0003] In the prior art, a shutter is usually installed on the parting surface of the male and female mold bodies to generate a closing force between the male and female mold bodies so that the male and female mold bodies remain temporarily closed when they are about to be opened. The mold opening force overcomes the closing force to separate the male and female mold bodies, thereby achieving the effect of delaying mold opening. The existing shutter usually includes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/20B29C45/64
CPCB29C33/303B29C45/2606
Inventor 杜健生
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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