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Exhaustive metal die

A metal mold, metal mold technology, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of limited exhaust area, high cost, affecting product quality, etc., to improve product quality, increase output, and eliminate defects.

Inactive Publication Date: 2007-10-17
陈特夫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method can effectively solve the above problems, but in practice, there are still certain defects, such as limited exhaust area, and long-term use, the ventilating parts are easy to block, affecting product quality, and its manufacturing and assembly are complicated and troublesome. High cost, easy adhesion between product and mold

Method used

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  • Exhaustive metal die
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] As shown in Figure 1, a metal mold that can be exhausted includes a fiber breathable layer 1, a rigid breathable plate 2, a mold base 3, and an exhaust duct 4. The gas in the metal mold cavity is removed through various ways of the exhaust duct. It is discharged to the outside of the mold matrix; the fiber breathable layer 1 is located on the working surface of the mold, and the opposite side of the working surface of the breathable layer 1 is provided with a rigid breathable plate 2. The rigid breathable plate 2 supports the breathable layer 1 to remain unchanged during work, and the rigid breathable plate 2 The other side is in contact with the mold base 3, and an exhaust duct 4 is arranged inside the mold base 3, and the exhaust duct 4 communicates with the external environment of the mold base 3.

Embodiment 2

[0015] As shown in Figure 2, a closed cavity 5 is preset in the mold base body. The volume of the cavity should ensure that the gas discharged through the gas permeable layer 1 enters the closed cavity 5 when the mold is working, and the reaction pressure generated after being compressed is less than the product molding. The working pressure at the time, the connection of the air-permeable layer 1, the rigid air-permeable plate 2, and the mold base 3 are the same as those in the first embodiment, and the exhaust channel 4 communicates with the closed cavity 5.

Embodiment 3

[0017] The difference between this embodiment and Embodiment 2 is that a closed container is provided outside the exhaust mold, and a pipe is used to communicate with the gas discharged from the exhaust mold to replace the closed cavity 5 inside the mold base. Others are the same as in the second embodiment.

[0018] As another embodiment of the present invention, the present invention can also be directly provided with a composite fiber breathable layer on the working surface of the mold base, and fine channels, or fine holes, may be provided on the inner side of the mold base, without the need for rigid breathable plates. Or air-permeable grooves; directly absorb gas through micro-channels or micro-holes and rebound pressure, so that the dust particles adhering to the air-permeable layer of composite fibers can fall off.

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PUM

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Abstract

A metal module is disclosed, on the internal wall of which there is micro-hole air-permeating unit or micro exhausting holes or micro exhausting seam, the air is discharged out from the mould through the air channel. It can be set a sealed inner chamber which has powder for cleaning the substance adhered on the surface of air-permeating layer. Advantages: eliminated defect, improved quality, raised production yield and reduced cost.

Description

Technical field [0001] The invention relates to the technical field of molds, and more specifically to a mold technology that uses powder materials as raw materials for pressing and has an exhaust function, and is suitable for industries such as powder metallurgy, ceramic products, and grinding wheel manufacturing. Background technique [0002] In the process of traditional plastic, rubber, ceramic and grinding wheel products being pressed and formed in the metal mold cavity, due to various reasons, the air existing in the mold cavity or in the product particles cannot be discharged, resulting in product defects. Such as air trapping, water ripples, lack of meat, burrs and pores in plastics and rubber products; delamination, bubbles or cracks in ceramic products. As a result, the product is scrapped or reduced to a defective product. In order to solve this problem, the applicant applied for an invention patent titled "A metal mold capable of venting" on November 29, 2002. The pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/10B28B7/44
Inventor 陈特夫
Owner 陈特夫