Device for preventing off-shell phenomenon in product assembly

A technology for products and moving molds, applied in the field of devices to prevent the separation of product assembly shells, can solve problems such as poor shipments, product flatness not meeting requirements, and prone to warping and deformation, so as to improve production efficiency and ensure shipments. quality effect

Inactive Publication Date: 2012-09-26
KUSN TUOAN PLASTIC PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A polypropylene (PP plastic) lower cover, see figure 1 , it is prone to warping deformation during the injection molding process. When assembling with the upper cover, when figure 1 After locking the product with two screws on the parting surface shown, the flatness of the product still cannot meet the requirements, and the shell separation between the product and the upper cover is obvious, and the maximum gap between the shell and the cover reaches 0.86 mm, while the standard The tolerance requirement is only ±0.2 mm, exceeding the tolerance requirement by 0.46 mm, resulting in a defective rate of more than 58.34%

Method used

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  • Device for preventing off-shell phenomenon in product assembly
  • Device for preventing off-shell phenomenon in product assembly
  • Device for preventing off-shell phenomenon in product assembly

Examples

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Embodiment 1

[0013] Such as figure 2 As shown, a device for preventing product assembly from separating includes a fixed mold 1, a product 2, a movable mold 3, and a set screw hole 4. The fixed mold 1 is installed and fixed on the movable mold 3, and the fixed mold 1 and the movable mold The parting surface between the molds 3 is an arc surface.

[0014] A product 2 is installed in the cavity between the fixed mold 1 and the movable mold 3 .

[0015] There are two symmetrical set screw holes 4 corresponding to the position of the product 2 in the moving mold 3 .

[0016] The new mold design uses a pre-deformation device, that is, the parting surface (PL) is designed to be arc-shaped, which is opposite to the warping deformation direction of product 2 and has the same arc. In this way, after product 2 is injection molded, the warping deformation will pull the parting surface (PL) from the arc shape to almost a horizontal plane. After modifying the mold device, the warping deformation of...

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PUM

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Abstract

The invention relates to a device for preventing the off-shell phenomenon in product assembly, which comprises a fixed mould (1), a product (2), a movable mould (3) and tightening screw holes (4), wherein the fixed mould (1) is mounted and fixed on the movable mould (3); and a parting surface between the fixed mould (1) and the movable mould (3) is an cambered surface. The device has the advantages of ensuring the product delivery quality and improving the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of moulds, in particular to a device for preventing product assembly shells from separating. Background technique [0002] A polypropylene (PP plastic) lower cover, see figure 1 , it is prone to warping deformation during the injection molding process. When assembling with the upper cover, when figure 1 After locking the product with two screws on the parting surface shown, the flatness of the product still cannot meet the requirements, and the shell separation between the product and the upper cover is obvious, and the maximum gap between the shell and the shell reaches 0.86mm, while the standard The tolerance requirement is only ±0.2 mm, which exceeds the tolerance requirement by 0.46 mm, resulting in a defective rate of more than 58.34%. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a device for preventing product assembly shell separation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26
Inventor 罗昌义罗昌国罗宣华
Owner KUSN TUOAN PLASTIC PRODS
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