Re-entrant traction injection mold and working method thereof
A technology of injection molding and injection mold, which is applied in the field of injection molding machines, can solve problems such as product arc deformation, and achieve the effect of simplifying the design
Pending Publication Date: 2018-05-29
太仓朗盛金属制品有限公司
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Problems solved by technology
For injection molding products with radians, the corresponding radian shape is usually designed in the injection molding cavity, and then the injection molded products are ejected from the mold through the product ejection mechanism. However, during the ejection and demoulding process of the product, the product The output mechanism will produce a certain thrust on the arc shape, causing the original product arc deformation
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[0022] Such as figure 1 A side concave traction injection molding mold shown is characterized in that: a movable mold base 1, a fixed mold base 2, an ejection traction mechanism 3, a movable mold fixing base 4 and a clamping cylinder 5, and the movable mold base 5 is arranged on On the movable mold holder 4, the left end of the movable mold holder 4 is connected to the mold clamping cylinder 5, the fixed mold holder 2 is arranged parallel to the movable mold holder 1, and the ejection traction mechanism 3 is arranged through the movable mold holder 4 and the movable mold holder. Inside the mold base 1, the middle position of the fixed mold base 2 is provided with an injection gate 21, and the inner side of the fixed mold base 2 is provided with a branch flow channel 22 communicating with the injection gate 21. There is a molded groove flow channel 11.
[0023] In this embodiment, the moving mold fixing seat 4 is provided with a moving mold positioning block 41, and the moving...
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The invention discloses a re-entrant traction injection mold. The re-entrant traction injection mold comprises a movable mold seat, a fixed mold seat, an injection traction mechanism, a movable mold fixing seat and a mold assembly air cylinder, wherein the movable mold seat is arranged on the movable mold fixing seat; the left end of the movable mold fixing seat is connected with the mold assemblyair cylinder; the fixed mold seat is arranged parallel to the movable mold seat; the injection traction mechanism is arranged inside the movable mold fixing seat and the movable mold seat in a penetrating manner; an injection molding sprue gate is arranged at the middle position of the fixed mold seat; a branch runner communicating with the injection molding sprue gate is arranged on the inner side of the fixed mold seat; and a molding grooved runner is arranged on the movable mold seat. Through the injection traction mechanism, an injection molded product can be pulled from the side, so thatnot only can the action of demolding the injection molded product from the fixed mold seat by achieved, but also the injection molded product can be subject to arc treatment during a withdrawal process of the injection traction mechanism, and the design of inner molding cavities on the fixed mold seat and the movable mold seat can be simplified. Accordingly, the re-entrant traction injection moldis convenient and practical.
Description
technical field [0001] The invention relates to the technical field of injection molding machines, in particular to an undercut traction injection molding mold and a working method thereof. Background technique [0002] Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products a complete structure and precise dimensions. It is used in industrial production for injection molding, blow molding, extrusion, die-casting or stamping. This kind of mold, during injection molding, mainly realizes the processing of the shape of the article through the change of the physical state of the molding material. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the molding cavity, and is cooled and shaped in the cavity. Then the upper and lower molds are separated, and the product is ejected from the cavity through the product ejection mechanism to leave the mold. Because the...
Claims
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IPC IPC(8): B29C45/26B29C45/40
CPCB29C45/2602B29C45/40B29C45/4005B29C2045/4063
Inventor 夏继文
Owner 太仓朗盛金属制品有限公司