Cold runner die for automobile plastic parts
A technology for cold runners and plastic parts, applied in the field of cold runner molds, can solve the problems of waste of raw materials, large fluid flow resistance, unstable quality of molded products, etc., and achieve the effect of improving yield, small flow resistance and difficult curing
Inactive Publication Date: 2016-08-03
SHENZHEN KAIZHONG PRECISION TECH CO LTD
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Problems solved by technology
[0003] What the present invention aims to solve is that the existing thermosetting engineering material mold is a hot runner mold, and the fluid flows easily in it and is cured by heat before entering the mold cavity, which in turn leads to large fluid flow resistance, serious waste of raw materials, and unstable quality of molded products. Problems, thus providing a cold runner mold for automotive plastic parts with low flow resistance of thermosetting engineering material molding fluid, less waste of raw materials, full molded products without missing materials, and high yield rate
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[0023] A cold runner mold for automotive plastic parts of the present invention will be described in detail below with reference to the accompanying drawings.
[0024] see figure 2 , in this embodiment, a cold runner mold for automotive plastic parts, including: a mold body 1; a runner 2 extending downward from the upper surface of the mold body 1, and the initial end of the runner 2 forms Injection port; mold cavity 3, formed in the mold body 1, which is used to form the contour of the product; runner 4, used to communicate with the runner 2 and each of the mold cavities 3, the runner 2 The fluid in the cavity is respectively introduced into each mold cavity 3; the heating assembly 5, adjacent to the mold cavity 3, is used to keep the temperature in the mold cavity 3 higher than the curing temperature of the thermosetting material; it also includes inhibiting the heating component 5 from The thermal insulation component 6 of the flow channel 2 and the flow channel 4 conduct...
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The invention discloses a cold runner die for automobile plastic parts. Because a heat isolation assembly used for suppressing heat conduction of a heating component towards a runner and a sub-runner is arranged in a die body, temperatures in the runner and the sub-runner can be easily kept below a curing temperature of a thermosetting material, thus fluids in the runner and the sub-runner are difficult to cure. Therefore, the fluids are difficult to cure in the sub-runner and the runner in the cold runner die for the automobile plastic parts, which is disclosed by the invention, and then raw material waste is reduced; and moreover, because the fluids are difficult to cure in the sub-runner and the runner, a flow resistance is low, the fluids can easily enter die cavities, and then the yield of products can be increased.
Description
technical field [0001] The invention relates to the field of molds, in particular to a cold runner mold for injection molding thermosetting engineering materials. Background technique [0002] Due to the characteristics of heat resistance, wear resistance, high voltage resistance, high mechanical strength and good dimensional stability, thermosetting engineering materials have a wide range of applications. Including household appliances, office and industrial equipment, automobile and other industries. Existing thermosetting plastics are injection molded in hot runner molds, such as figure 1 As shown, the hot runner mold usually includes a hot runner whose starting end is an injection port, a runner for dividing the fluid in the hot runner into each cavity, and a mold cavity corresponding to the shape of the product. Because the temperature in the hot runner and the runner is relatively high At the same time, in order to meet the requirement that the injection molding liqu...
Claims
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IPC IPC(8): B29C45/26B29C45/27B29C45/73
CPCB29C45/2602B29C45/2737B29C45/2756B29C45/7312B29C2045/2743
Inventor 张浩宇王裕芳
Owner SHENZHEN KAIZHONG PRECISION TECH CO LTD