Compression mold
A compression mold and compression molding technology, applied in the field of compression molds, can solve problems such as poor pressure transmission, failure to form, loose plastic, etc., and achieve the effects of solving poor pressure transmission and improving quality and authenticity rate
Active Publication Date: 2017-07-18
安徽江南泵阀集团有限公司
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Problems solved by technology
[0005] The technical effect of the present invention lies in: adopting the composite molding technology of multi-directional pressurization, the thermoplastic plastic with poor fluidity can be pressed evenly from multiple directions gradually during molding, and the molten plastic can be pressed into the mold cavity, which is a good solution. The quality of molded products and the authenticity rate are significantly improved due to the problems of poor fluidity plastics such as poor pressure transmission during one-way molding, small pressure farther away from the pressure head, loose plastic, and failure to form.
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[0012] Such as figure 1 Shown, a kind of compression molding mold, comprises core and the outer mold that core periphery and core are arranged at intervals, the clamping cavity between described outer mold and mold core constitutes the die cavity of mould, and described outer mold is provided with There are at least two dies, the dies and the outer die form a relative sliding fit, and the dies form a pressing action on the cavity, and the dies are arranged away from each other on the periphery of the cavity.
[0013] As a preferred embodiment of the present invention, the outer mold includes a pump casing 20, the pump casing 20 is a cylindrical structure closed at one end or both ends, and the cylindrical wall is provided with a short wall that penetrates the cylindrical wall and overhangs outwards. Pipe 21, the short pipe 21 is used to form the outlet of the water pump.
[0014] Further, the core includes a cylindrical core seat 10, the core seat 10 penetrates the cylinder c...
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The invention relates to a compression mold which is mainly applied to compression molding of wear-resistant and corrosion-resistant plastics with relatively poor thermoplastic flowability. The compression mold comprises a mold core and an external mold which is arranged on the periphery of the mold core and is arranged with the mold core at an interval, wherein a mold cavity of the mold can be formed by a clamping cavity between the external mold and the mold core, at least two press molds are arranged on the external mold, relative sliding fit can be formed between each press mold and the external mold, the press molds can also form extrusion action on the mold cavity, and each press mold is arranged distantly from each other on the periphery of the mold cavity. According to the compression mold disclosed by the invention, a multi-directional pressurized composite mold pressing technology is adopted to ensure that thermoplastic plastics with poor flowability can be gradually and uniformly pressed from a plurality of directions in a mold pressing process, and molten plastics can be pressed into the mold cavity; and the difficult problems that the plastics with poor flowability have unsmooth pressure transfer, have small pressure at the part which is relatively far away from a press head, are loose, and cannot be molded in a one-way mold pressing procedure can be well solved, and the quality and qualified product rate of mold pressing products can be significantly improved.
Description
technical field [0001] The invention relates to a compression molding mold, which is mainly used for compression molding plastics with poor thermoplastic fluidity such as wear resistance and corrosion resistance. Background technique [0002] In the current production process of corrosion-resistant and wear-resistant plastic pumps, ultra-high molecular weight polyethylene materials with good corrosion-resistant and wear-resistant properties are generally used for molding and lining. The transmission is not smooth, the pressure is small far away from the pressure head, the plastic is loose and cannot be molded, and the rate of molded genuine products has always been low, especially in the process of manufacturing complex-shaped workpieces such as pump casings, which can only be made into rings at the expense of hydraulic performance. Runner, otherwise it will not be possible to form. Contents of the invention [0003] The purpose of the present invention is to provide a th...
Claims
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IPC IPC(8): B29C43/36
CPCB29C43/36
Inventor 吴敏吴同茂胡敏胡海洋
Owner 安徽江南泵阀集团有限公司