Combined core-pulling device of plastic mould of arc hollow product
A technology of plastic molds and core-pulling devices, applied in the field of rotary core-pulling devices using sliders, which can solve the problems of complex demoulding methods, high manufacturing difficulty, and high mold costs, and achieve excellent pressure transmission, good consistency, and simple mold structures Effect
Active Publication Date: 2012-08-15
YANGZHOU HENGSHENG PRECISION MOLD
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Problems solved by technology
Since the above method is suitable for core-pulling of conventional products, it is not suitable for products with arcs, which makes the mold structure, demoulding method complicated, difficult to manufacture and high in mold cost.
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[0020] The present invention as Figure 1-5 As shown, described plastic mold comprises upper mold, lower mold and internal mold 2, is provided with at least one upper mold core 18 on upper mold bottom surface, is provided with at least one lower mold core 17 on lower mold top surface, upper mold core 18 and lower mold core 18. The mold core 17 is respectively provided with an upper mold cavity 18a and a lower mold cavity 17a, and the upper mold cavity 18a and the lower mold cavity 17a form the outer contour molding cavity of the product 16 after the mold is closed; the inner mold 2 is located in the molding cavity Among them, the inner contour molding surface of the product 16 is formed, and the inner mold 2 is flexibly connected to the lower mold through a combined core pulling device, so that the inner mold 2 reciprocates in an arc along the arc axis direction of the molding cavity. Movement; the runner 19 connects the molding cavity of the product 16;
[0021] The combined...
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The invention discloses a combined core-pulling device of a plastic mould of an arc hollow product, relating to a device for carrying out rotary core pulling by using slide blocks. The invention provides a combined core-pulling device of a plastic mould of an arc hollow product, which is simple in structure, high in reliability and quick in demoulding and can further greatly improve the production efficiency. The plastic mould comprises an upper die, a lower die and an inner die, wherein the bottom surface of the upper die is provided with at least an upper die core, the top surface of the lower die is provided with at least a lower die core, the upper and lower die cores are respectively provided with upper and lower die cavities, and the upper and lower die cavities are formed into an outer contour forming cavity of the product after the operation of die assembly is performed; and the inner die is arranged in the forming cavity so as to form an inner contour forming surface of the product, and the inner die is movably connected to the lower die by the combined core-pulling device, so that the inner die makes an arc reciprocating motion along the arc axis direction of the forming cavity. The combined core-pulling device disclosed by the invention realizes the rotary core-pulling action by using the rack-and-gear drive, thereby greatly solving the problem that the rotary core-pulling action is difficult to be completed by using common devices; and the combined core-pulling device is simple and exquisite in structure.
Description
technical field [0001] The invention relates to a plastic mould, in particular to a rotating core pulling device using a slide block. Background technique [0002] With the wide application of plastic products, in the production process of plastic products, people often require the production of beautiful and practical products with curvature and curvature, such as horn-shaped and scabbard-shaped hollow structural parts. Core-pulling methods in the prior art mainly include manual, motorized, hydraulic or air pressure. The manual core-pulling mechanism refers to a mechanism that relies on manpower for side core-pulling. The motorized side core-pulling mechanism refers to the mechanism that relies on the mold opening force of the injection machine or die-casting machine to achieve core-pulling through the relevant transmission parts. The hydraulic or pneumatic core-pulling mechanism refers to a mechanism that configures a special hydraulic cylinder or cylinder on the mold an...
Claims
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IPC IPC(8): B29C33/44
Inventor 侯晨谷任松周小波
Owner YANGZHOU HENGSHENG PRECISION MOLD