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Die locking injection molding method for precutting soft small fabric

A fabric and soft technology, applied in the coating and other directions, can solve the problems of increasing the cost of fabrics, increasing investment in process equipment and labor costs, and achieving the effect of improving the utilization rate of fabrics, getting rid of the dependence of high-end injection molding equipment, and reducing manufacturing costs.

Inactive Publication Date: 2012-02-15
CHANGCHUN FAWAY ADIENT AUTOMOTIVE SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a pre-cut soft small fabric injection molding method to solve the problem that the low-pressure injection molding technology of traditional soft fabrics increases the cost of fabrics on the one hand, and also increases the investment and labor costs of subsequent process equipment.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Die locking injection molding method for precutting soft small fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Include the following steps:

[0016] (1) Product design: During product design, a process supplementary area is reserved around the edge of the product for the design of hanging holes for the fabric. The diameter of the hanging holes is 6mm. The distribution of the hanging holes requires one to be arranged near each corner area of ​​the product. , at the same time, reserve the gate position of the mold in the process supplement area;

[0017] (2) Mold design: The thickness of the mold cavity is processed according to the thickness of the plastic skeleton plus the thickness of the skin after compression. The gate of the mold is designed in the process supplement area reserved for the product, and the diameter of the gate is 3.5mm. This structure can effectively avoid melting direct burns of the visible surface of the product by the glue;

[0018] (3) Fabric selection: The outer surface material of the fabric is suitable for both PVC and fabric, and the inner surface re...

Embodiment 2

[0023] Include the following steps:

[0024] (1) Product design: During product design, a process supplementary area is reserved around the edge of the product for the design of hanging holes for the fabric. The diameter of the hanging holes is 6mm. The distribution of the hanging holes requires one to be arranged near each corner area of ​​the product. , at the same time, reserve the gate position of the mold in the process supplement area;

[0025] (2) Mold design: The thickness of the mold cavity is processed according to the thickness of the plastic skeleton plus the thickness of the skin after compression. The gate of the mold is designed in the process supplement area reserved for the product, and the diameter of the gate is 3.5mm. This structure can effectively avoid melting direct burns of the visible surface of the product by the glue;

[0026] (3) Fabric selection: The outer surface material of the fabric is suitable for both PVC and fabric, and the inner surface re...

Embodiment 3

[0031] Include the following steps:

[0032] (1) Product design: During product design, a process supplementary area is reserved around the edge of the product for the design of hanging holes for the fabric. The diameter of the hanging holes is 6mm. The distribution of the hanging holes requires one to be arranged near each corner area of ​​the product. , at the same time, reserve the gate position of the mold in the process supplement area;

[0033] (2) Mold design: The thickness of the mold cavity is processed according to the thickness of the plastic skeleton plus the thickness of the skin after compression. The gate of the mold is designed in the process supplement area reserved for the product, and the diameter of the gate is 3.5mm. This structure can effectively avoid melting direct burns of the visible surface of the product by the glue;

[0034] (3) Fabric selection: The outer surface material of the fabric is suitable for both PVC and fabric, and the inner surface re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a die locking injection molding method for precutting soft small fabric, which belongs to a method for compositing fabrics having soft foam with a plastic skeleton. The method comprises the steps of designing a product, designing a die, selecting a fabric, cutting the fabric and selecting a skeletal material; an injection speed is set to be in a range of 55 mm / s to 60 mm / s, injection pressure is set to be 70 bar to 80 bar, pressure maintaining time is set to be 4 to 6 seconds, the temperature of a charging barrel of an injection machine is set to be 180 to 200 DEG C, and the temperature of hot fluid channel of the die is set to be 210 DEG C. The advantages of the invention are as follows: a soft fabric with an area smaller than the area of the plastic skeleton is compounded with a plastic substrate through the technology of die locking injection molding; a fabric utilization rate is increased by 30%.

Description

technical field [0001] The invention belongs to a method for compounding a fabric with soft foam and a plastic skeleton. Background technique [0002] The composite molding technology of the fabric and the plastic skeleton through the injection molding process is called low-pressure injection molding technology, because this process requires that a small injection pressure must be used during the injection molding process to prevent the fabric at the gate from being bruised. For fabrics with soft foam, the injection molding machine also requires the special function of mold opening injection to reduce the burn of the foam by molten plastic. Due to the weak control ability of the mold opening injection molding process on the flow of sol, the fabric of the product is objectively required. The size should be larger than the cavity size of the mold, and the excess fabrics larger than the outline skeleton need to be trimmed in the subsequent process. The low-pressure injection m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C45/17
Inventor 孙军李瑞文毕宏华于善平厉研张继堂沈金华
Owner CHANGCHUN FAWAY ADIENT AUTOMOTIVE SYST CO LTD