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Injection molding technique for PP-LGF30 material storage battery holder

A PP-LGF30, battery technology, applied in the field of injection molding, can solve the problems of low quality of finished products, complex process steps, short cycle time, etc., to achieve the effects of good product quality, lower production costs, and short cycle time

Inactive Publication Date: 2016-11-16
WUHU HENGXIN AUTO INTERIOR TRIM COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of the prior art, such as complex process steps, long cycle, high cost and low quality of finished product, in the plastic battery bracket injection molding process, and to provide an injection molding process for a PP-LGF30 material battery bracket. The present invention The hot runner injection molding process is adopted. Since the runner in the hot runner mold has a heating device, the raw materials are in a molten state throughout the injection molding cycle, which saves raw materials and reduces production costs. At the same time, the process steps of the present invention are simple, easy to implement, and highly automated. , short cycle time and good product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The injection molding process of a battery bracket made of PP-LGF30 in this embodiment specifically includes the following steps:

[0037] Step 1. Raw material pretreatment:

[0038] Use an oven to dry the PP-LGF30 material for 4 hours at a temperature of 75-85°C. It should be noted that if the PP-LGF30 material is exposed to hot and humid air for a long time, it will absorb a small amount of water. If the water content and volatile matter in the PP-LGF30 material exceed 2%, it will cause product quality problems. Therefore, it is necessary to dry the PP-LGF30 material before molding to avoid quality defects such as silver streaks, streaks or bubbles on the product surface. Technical personnel creatively discovered through long-term production practice that the drying treatment of PP-LGF30 material for 4 hours under the condition of baking material temperature of 75-85°C is most beneficial to production. Specifically, in this embodiment, the baking material temperature is 7...

Embodiment 2

[0056] Same as Example 1, the difference is that in this example, the baking temperature is 80°C. Specifically, in this embodiment, the fixed mold in the injection mold is heated to 55°C, and the movable mold is heated to 45°C. Specifically, in this embodiment, the holding pressure is 55 bar.

Embodiment 3

[0058] The same as Example 1, the difference is that in this example, the baking temperature is 85°C. Specifically, in this embodiment, the fixed mold in the injection mold is heated to 60°C, and the movable mold is heated to 50°C. Specifically, in this embodiment, the holding pressure is 60 bar.

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Abstract

The invention discloses an injection molding technique for a PP-LGF30 material storage battery holder and belongs to the field of injection molding. The injection molding technique comprises the steps that firstly, a raw material is pretreated; secondly, an injection molding system and an injection mold are pretreated; thirdly, plastifying is carried out, specifically, the PP-LGF30 material pretreated in the first step is added to a barrel treated in the second step, and the material is heated to the melted state; fourthly, the mold is closed; fifthly, the melted PP-LGF30 material is injected into the heated mold through a nozzle of a hot runner treated in the second step; sixthly, pressure is maintained, specifically, the pressure is maintained through even injection; seventhly, cooling molding is carried out; eighthly, the mold is opened; and ninthly, demolding is carried out. The injection molding technique is simple in step, easy to implement, high in degree of automation, short in cycle and good in product quality.

Description

Technical field [0001] The invention relates to the technical field of injection molding, and more specifically, to an injection molding process for a battery bracket made of PP-LGF30. Background technique [0002] Injection molding is a method of producing shapes for industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression method and die casting method. Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes. Injection molding is realized by injection molding machines and molds. [0003] With the intensification of the energy crisis and the increasing awareness of human environmental protection, "lightweight" is becoming one of the important directions for the future development of the automotive industry, and "replacement of steel with plastic" is a very effective way to achieve the developme...

Claims

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Application Information

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IPC IPC(8): B29C45/77B29C45/78
CPCB29C45/77B29C45/78B29C2945/76498B29C2945/76531
Inventor 周超群孟祥磊陈磊王冬
Owner WUHU HENGXIN AUTO INTERIOR TRIM COMPANY
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