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Equipment for reducing internal stress of injection-molded part and injection-molding production method

A technology of injection molded parts and internal stress, which is applied in the field of injection molding production equipment, can solve the problems of stress marks on the surface of injection molded parts, dents on the surface of injection molded parts, and stress generation, so as to avoid poor plasticization and ensure the plasticization ability of mixed materials , the effect of reducing internal stress

Inactive Publication Date: 2021-04-06
NANJING TAOTESI SOFTWARE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After the injection molded part leaves the injection mold, the inside of the thicker part is still not completely cooled, resulting in high temperature transmission to the surface of the injection molded part, making the surface of the injection molded part prone to depressions, local stress and other problems, resulting in secondary processing in the later stage. , the surface of the injection molded part will have stress marks or electroplating peeling and other undesirable phenomena

Method used

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  • Equipment for reducing internal stress of injection-molded part and injection-molding production method
  • Equipment for reducing internal stress of injection-molded part and injection-molding production method
  • Equipment for reducing internal stress of injection-molded part and injection-molding production method

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Effect test

Embodiment 1

[0037] see Figure 1 , a device for reducing the internal stress of injection molded parts, comprising a raw material mixing assembly, an injection molding assembly, an injection cooling assembly, a finished product cooling assembly and a conveyor belt 1, the raw material mixing assembly is connected to the injection molding assembly, and an injection mold 2 is connected to the outlet of the injection molding assembly, The outside of the injection mold 2 is provided with a cooling cavity 3, the cooling cavity 3 is connected with the injection cooling assembly, the finished cooling assembly is located at the side of the injection mold 2, and the conveyor belt 1 is arranged in the finished cooling assembly.

[0038] see Figure II , the raw material mixing assembly includes a stirring tank 4, the top of the stirring tank 4 is provided with a feed hopper 5, the stirring tank 4 is provided with an agitator 6, the upper end of the agitator 6 is fixedly connected with a rotating sha...

Embodiment 2

[0044] An injection molding production method for equipment for reducing internal stress of injection molded parts, specifically comprising the following implementation steps:

[0045] Step 1, the material particles are poured into the stirring tank 4 through the feed hopper 5, the stirring motor 4 is started, the stirring motor 4 drives the agitator 6 to rotate through the rotating shaft 7, and the materials in the stirring tank 4 are mixed and stirred;

[0046] Step 2, after the materials are mixed, the gate motor 11 is started, and the gate motor 11 drives the gate 10 to start discharging, and the material enters the barrel 13 through the discharge port 9;

[0047] Step 3, the heating tube heats the material in the barrel 13, and after the material is melted, the injection motor 15 drives the screw 14 to rotate, the screw 14 squeezes the material and pushes it to the discharge end 16, and the material enters the injection mold 2 through the nozzle;

[0048] Step 4, the circ...

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Abstract

The invention discloses equipment for reducing internal stress of an injection-molded part and an injection molding production method. The equipment comprises a raw material mixing assembly, an injection molding assembly, an injection molding cooling assembly, a finished product cooling assembly and a conveying belt; the raw material mixing assembly is connected with the injection molding assembly; and an injection molding mold is connected to a discharging outlet of the injection molding assembly, a cooling cavity is formed outside the injection molding mold, the cooling cavity is connected with the injection molding cooling assembly, the finished product cooling assembly is located on the side of the injection molding mold, and the conveying belt is arranged in the finished product cooling assembly. By arranging the raw material mixing assembly, material particles for injection molding can be mixed, the material mixing uniformity can be effectively improved, and the mixed material plasticizing capacity is guaranteed; by arranging the injection molding cooling assembly, the injection molding mold can be cooled, and the internal stress existing in an injection molding product can be eliminated advantageously; and by arranging the finished product cooling assembly, the injection-molded part can be continuously cooled through spraying of cooling liquid after being demolded, and the situations that the thick part of the injection-molded part is sunken and the surface bonding line is enlarged due to the fact that internal heat is difficult to release can be prevented.

Description

technical field [0001] The invention relates to the technical field of injection molding production equipment, in particular to a device for reducing internal stress of injection molded parts and an injection molding production method. Background technique [0002] Mold injection molding is a method of producing shapes for industrial products, and products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding molding method and die-casting method. Injection molding machine is the main molding equipment for making thermoplastic or thermosetting materials into various shapes of plastic products using plastic molding molds. Injection molding is realized through injection molding machines and molds. . [0003] After the injection molded part leaves the injection mold, the inside of the thicker part is still not completely cooled, resulting in high temperature transmission to the surface of the injection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/17B29C45/46B29C45/72B29C45/73B29C45/74
CPCB29C45/1769B29C45/46B29C45/7207B29C45/73B29C45/74
Inventor 苏欣
Owner NANJING TAOTESI SOFTWARE TECH CO LTD
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