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Excessive glue preventing method for multi-glue-film injection molding

A technology of anti-spill glue and film, applied in the direction of coating, etc., can solve the problems of unfavorable injection molding yield, poor injection molding, and lifting of automotive trim parts, and achieve the effect of improving injection molding yield

Inactive Publication Date: 2019-11-12
DONGGUAN HIROCA AUTOMOTIVE TRIM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the improvement of science and technology and the development of economy and society, cars have gradually become the means of travel for more and more families. In the process of manufacturing cars, various car accessories are needed. It mainly includes plastic parts and the decorative layer covering the plastic parts. In order to improve the production efficiency of automotive trims, a technology of injection molding plastic parts on the decorative layers has emerged. Since the decorative layers of automotive trims have multiple independent pieces Splicing, in the process of injection molding, the bonding seam between two adjacent independent pieces of decorative layers often causes poor injection molding due to glue overflow, which is not conducive to the improvement of injection molding yield of automotive trim parts

Method used

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  • Excessive glue preventing method for multi-glue-film injection molding
  • Excessive glue preventing method for multi-glue-film injection molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 1 and figure 2 As shown, a kind of polymembrane injection anti-overflow glue method of the present invention comprises the following steps:

[0033] Provide a first adhesive film 1 and a second adhesive film 2, the first adhesive film 1 has a first main body portion 11 and a first bonding edge 12 connected to the first main body portion 11, and the second adhesive film 2 has a second main body portion 21 and the second bonding edge 22 connected to the second body part 21, the patterns, graphics or colors of the first body part 11 and the second body part 21 are different, for example, the color of the first body part 11 is silver , the color of the second main body part 21 is black, utilize the pattern, figure or color that the first main body part 11, the second main body part 21 itself has to decorate the automobile, the first bonding edge 12, the second bonding edge 22 are attached to each other, and the first bonding edge 12 and the second bonding edge...

Embodiment 2

[0049] see figure 1 and figure 2 As shown, the first bonding edge 12 of the first adhesive film 1 and the second bonding edge 22 of the second adhesive film 2 are bonded and fixed together by glue, and the first adhesive film 1 and the second adhesive film 1 are bonded together by glue. The film 2 is bonded and fixed together, which simplifies the fixing structure between the first bonding edge 12 and the second bonding edge 22, and improves the connection efficiency between the two bonding edges.

[0050] The rest of this embodiment is the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here.

Embodiment 3

[0052] see figure 1 and figure 2 As shown, the following steps are also included:

[0053] Provide a fixing piece, the fixing piece fixes the first bonding edge 12 and the second bonding edge 22 together, and uses the fixing piece to firmly fix the two adhesive films together to prevent the two adhesive films from being separated from each other during the injection molding process . Preferably, the fixing piece is covered on the outside of the first fitting side 12 and the second fitting side 22 , and the fixing piece is extended along the length direction of the fitting side. After the injection molding of the film decorative part 5 is completed, the plastic part formed by solidification of molten plastic is covered on the outside of the fixing part, so as to prevent the fixing part from falling off and cause poor use of the film decorative part.

[0054] The rest of this embodiment is the same as that of Embodiment 1, and the features not explained in this embodiment ar...

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Abstract

The invention relates to the technical field of multi-glue-film injection molding, in particular to an excessive glue preventing method for multi-glue-film injection molding. The method comprises following steps: a first glue film and a second glue film are provided, a first attaching edge of the first glue film and a second attaching edge of the second glue film are fixedly connected together, and a glue film unit is formed; an injection mold is provided, the glue film unit is placed in an injection mold cavity of the injection mold, and the injection mold is provided with glue inlet holes; molten plastic is injected into the injection mold cavity of the injection mold through the glue inlet holes, and a glue film trim is formed by the cooled and cured molten plastic and the glue film unit; the molten plastic entering through the glue inlet holes enters the injection mold cavity through two sides, away from each other, of the first attaching edge and the second attaching edge respectively, then the first attaching edge and the second attaching edge are extruded, thereby being stably attached together, the excessive glue phenomenon caused by the fact that the first attaching edge and the second attaching edge are extruded to open by the molten plastic is avoided, and the yield of multi-glue-film injection molding is increased.

Description

technical field [0001] The invention relates to the technical field of multi-adhesive film injection molding, and in particular discloses a multi-adhesive film injection anti-overflow glue method. Background technique [0002] With the improvement of science and technology and the development of economy and society, cars have gradually become the means of travel for more and more families. In the process of manufacturing cars, various car accessories are needed. It mainly includes plastic parts and the decorative layer covering the plastic parts. In order to improve the production efficiency of automotive trims, a technology of injection molding plastic parts on the decorative layers has emerged. Since the decorative layers of automotive trims have multiple independent pieces In the process of injection molding, the bonding seam between two adjacent independent pieces of decorative layers often causes poor injection molding due to glue overflow, which is not conducive to imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/02B29C45/14B29C51/10B29C51/42B29C51/32B29C65/18
CPCB29C45/14508B29C51/10B29C51/32B29C51/42B29C65/18B29C66/1142B29C69/02
Inventor 余泽民庄吴钏李叔明
Owner DONGGUAN HIROCA AUTOMOTIVE TRIM TECH CO LTD
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