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Injection molding process for multi-air-channel auxiliary plastic mold

A plastic mold and multi-air channel technology, applied in the direction of coating, etc., can solve the problems of short service life of parts, low pass rate of parts, affecting parts and other problems, achieve perfect quality, improve smoothness, and eliminate internal stress Effect

Inactive Publication Date: 2017-11-07
滁州市博康模具塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, gas-assisted injection molding is still not enough to eliminate the internal stress of the part, resulting in short service life and low pass rate of the part (the existence of internal stress greatly affects the strength, toughness and appearance gloss of the part, etc.)

Method used

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  • Injection molding process for multi-air-channel auxiliary plastic mold

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0027] Such as figure 1 As shown, it is a multi-air channel auxiliary plastic mold injection molding process described in this embodiment, which includes the following steps:

[0028] Step (1) Plastic mold design:

[0029] Described plastic mold comprises plastic mold body 10, and described plastic mold body 10 is provided with mold cavity 20, and described plastic mold body 10 is also provided with the multi-air channel that cooperates with described mold cavity 20, and described multi-air channel It includes a first airway 30, a second airway 40, a third airway 50 and a partial airway 60, and the first airway 30, the second airway 40 and the third airway 50 are provided with matching The first airway inlet 71 and the first airway outlet 72 , and the partial airway 60 is provided with a second airway inlet 81 and a second airway outlet 82 .

[0030] Step (2) mold pre-cooling stage:

[0031] The cold air flow is injected into the third air channel 50 through the first air c...

specific Embodiment 2

[0046] Such as figure 1 As shown, it is a multi-air channel auxiliary plastic mold injection molding process described in this embodiment, which includes the following steps:

[0047] Step (1) Plastic mold design:

[0048]Described plastic mold comprises plastic mold body 10, and described plastic mold body 10 is provided with mold cavity 20, and described plastic mold body 10 is also provided with the multi-air channel that cooperates with described mold cavity 20, and described multi-air channel It includes a first airway 30, a second airway 40, a third airway 50 and a partial airway 60, and the first airway 30, the second airway 40 and the third airway 50 are provided with matching The first airway inlet 71 and the first airway outlet 72 , and the partial airway 60 is provided with a second airway inlet 81 and a second airway outlet 82 .

[0049] Step (2) mold pre-cooling stage:

[0050] The cold air flow is injected into the third air channel 50 through the first air ch...

specific Embodiment 3

[0065] Such as figure 1 As shown, it is a multi-air channel auxiliary plastic mold injection molding process described in this embodiment, which includes the following steps:

[0066] Step (1) Plastic mold design:

[0067] Described plastic mold comprises plastic mold body 10, and described plastic mold body 10 is provided with mold cavity 20, and described plastic mold body 10 is also provided with the multi-air channel that cooperates with described mold cavity 20, and described multi-air channel It includes a first airway 30, a second airway 40, a third airway 50 and a partial airway 60, and the first airway 30, the second airway 40 and the third airway 50 are provided with matching The first airway inlet 71 and the first airway outlet 72 , and the partial airway 60 is provided with a second airway inlet 81 and a second airway outlet 82 .

[0068] Step (2) mold pre-cooling stage:

[0069] The cold air flow is injected into the third air channel 50 through the first air c...

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PUM

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Abstract

The invention discloses a multi-air channel auxiliary plastic mold injection molding process, comprising the following steps: step (1) plastic mold design; step (2) mold precooling stage; step (3) melt injection stage; step (4) multiple Airway gas injection control stage; step (5) partial nitrogen filling stage; step (6) gas injection end stage; step (7) gas withdrawal stage. The invention eliminates the internal stress existing in the injection molded parts, so that the quality of the injection molded parts is high, and the production efficiency and yield of the mold are greatly improved.

Description

technical field [0001] The invention relates to a multi-air channel auxiliary plastic mold injection molding process, which belongs to the technical field of injection molding. Background technique [0002] Plastic molds are tools that are matched with plastic molding machines in the plastic processing industry to give plastic products a complete configuration and precise dimensions. Due to the variety of plastics and processing methods, and the structure of plastic molding machines and plastic products, the types and structures of plastic molds are also diverse. A combined plastic mold for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The die is a punch with a variable core composed of a punch combined base plate, a punch assembly, a punch combined clamping plate, a cavity cut-off component and a side cut combination plate. The coordinated change of the mold convex, concave mold and auxiliary molding system can process a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C45/26B29C45/73B29C45/76B29C45/77
CPCB29C45/0025B29C45/2602B29C45/7312B29C45/76B29C45/77B29C2945/76498B29C2945/76561
Inventor 李宝笋
Owner 滁州市博康模具塑料有限公司
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