Method for shortening molding cycle of paper holder of copier

A molding cycle and copier technology, which is applied in the field of shortening the molding cycle of a copier paper holder to achieve the effects of improving production efficiency, reducing production costs, and reducing energy consumption

Inactive Publication Date: 2010-12-22
SHENZHEN CHANGHONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many cases, in order to improve the deformation of the product, the molding cooling time is prolonged, resulting in an excessively long injection molding cycle
It is more difficult to avoid the deformation of the product and shorten the cooling time of the molding

Method used

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  • Method for shortening molding cycle of paper holder of copier
  • Method for shortening molding cycle of paper holder of copier
  • Method for shortening molding cycle of paper holder of copier

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Embodiment Construction

[0016] Below in conjunction with embodiment the present invention is described in further detail:

[0017] The method for shortening the molding cycle of the copier paper support includes:

[0018] 1. Adopt the clamping force of "mold clamping (one stage) 75, mold clamping (second stage) 70, and mold clamping (five stages) 146" to ensure that the product has no burrs, and to extend the mold, the tie rod of the injection molding machine, the toggle and the template. service life.

[0019] 2. Use the injection speed of "injection (one) 85, injection (two) 95, injection (three) 75, injection (four) 65" to avoid air bubbles in the product.

[0020] 3. Set the holding time of "holding pressure (1) 1 second, holding pressure (2) 2 seconds" and related parameters (see the following parameter table for details) to ensure the weight of the product.

[0021] 4. Set the temperature of the barrel to 70 degrees, set 6 sets of machine water for the front mold, set 4 sets of frozen water a...

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Abstract

The invention relates to a method for shortening molding cycle of a paper holder of a copier. The method comprises the following steps: (1) adopting three-stage mold clamping force to ensure the product to be free of burrs and prolong the service lives of tie bars, toggles and templates of molds and injection molding machines; (2) adopting four-stage injection speed to avoid the product from having bubbles; (3) setting two-stage holding time to ensure the weight of the product; (4) setting appropriate material temperature and water lines (6 groups for the front mold and 7 groups for the rear mold) and lowering the mold temperature to shorten the cooling time of the mold from 30s to 18s; (5) setting 10 hot runners and four-stage injection pressure to avoid the product from deforming; and (6) charging while cooling, opening and closing the mold and even holding, ejecting multiple times while opening the mold and carrying out last ejecting and withdrawing while closing the mold. The method effectively solves the following technical problems: the 500*560*155mm products are not deformed, have normal surfaces and dispense with secondary processing during production, and the molding cycle is 38s so as to achieve the output of 68000 single molds per month.

Description

technical field [0001] The invention relates to a method for shortening the molding cycle of a copier paper holder. Background technique [0002] The well-known injection molding cycle refers to the time from mold closing to the next mold closing, including the time required for mold closing, injection, pressure holding, cooling and mold opening. Clamping is generally divided into four sections: fast clamping, slow clamping, low pressure mold protection and high pressure mold clamping. Mold opening is generally divided into three stages: first slow mold opening, fast mold opening and second slow mold opening. In the molding cycle, in order to shorten the injection molding cycle, it is generally to shorten the molding cooling time. However, in many cases, in order to improve the deformation of the product, the molding cooling time is prolonged, resulting in an excessively long injection molding cycle. It is more difficult to avoid product deformation and shorten the moldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76
Inventor 张泰胡深海朱文展陈玉香
Owner SHENZHEN CHANGHONG TECH CO LTD
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