Cavity and core stress-free floating die frame
A floating mold base and core technology, which is applied in the field of mechanical tooling and molds to eliminate force imbalance and improve service life and quality.
Inactive Publication Date: 2012-12-12
NANCHANG UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to provide a floating mold base that avoids the force of the cavity core in view of the main problems existing in the existing typical standard injection molds.
Method used
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[0009] The invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0010] The structure of the present invention includes: mold cavity, fixed template, equal height block A, equal height block B, core, movable template, compression spring, compression bolt, support block.
[0011] Install equal-height block A on the fixed template, and equal-height block B on the movable template. By controlling the height of the equal-height blocks, ensure that there is a certain gap between the cavity and the core, which should be smaller than the plastic injection molded product. The minimum flash overflow value for . The compression spring is installed in the support block, pressed under the movable formwork, and connected and fixed by compression bolts to ensure a certain floating gap between the movable formwork and the support block.
[0012]
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The invention discloses a cavity and core stress-free floating die frame. The cavity and core stress-free floating die frame comprises a cavity, a fixed die plate, a contour block A, a contour block B, a core, a movable die plate, a pressing spring, a pressing bolt and a supporting block, wherein the contour block A is arranged on the fixed die plate, the contour block B is arranged on the movable die plate, the existence of certain gaps between the cavity and the core is ensured through the control for the height of the contour blocks, the pressing spring is arranged in the supporting block and under the movable die plate and is connected and fixed through the pressing bolt, and thus the existence of certain floating gaps between the movable die plate and the supporting block is ensured. According to the cavity and core stress-free floating die frame disclosed by the invention, a pressing impact stress between the cavity and the core is removed, the service life and the quality of a die are greatly increased, and the unbalance force of the fixed die plate and the movable die plate, caused by processing error, can be removed trough the contour blocks and the pressing spring.
Description
technical field [0001] The invention relates to a floating formwork base free from cavity and core stress, and belongs to the field of mechanical tooling molds. Background technique [0002] At present, the injection mold has formed a standard structure. When injecting products, there is a certain gap between the fixed template and the movable template, and the cavity and the core are tightly pressed together to prevent plastic from overflowing and flashing. The entire force of the mold is borne by the cavity and core. We know that the cavity and the core are the main parts of the mold. The continuous opening and closing of the mold during the working process will have a great impact on the cavity and the core, which will seriously affect the product quality and reduce the service life of the cavity and the core. This is a major problem with typical standard injection molds today. Contents of the invention [0003] The purpose of the present invention is to provide a flo...
Claims
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IPC IPC(8): B29C45/26
Inventor 邱国旺梁祖强
Owner NANCHANG UNIV