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A kind of abs vacuum low pressure injection molding and machining method for ear hole repairing

An injection molding, vacuum and low pressure technology, applied in the field of repairing ABS finished products, can solve the problems of affecting production efficiency, difficult to find inserts, long time consuming, etc., and achieve the effect of reliable strength of molded parts, easy to take and use, and not easy to shrink.

Inactive Publication Date: 2016-04-20
CHONGQING CONSTR ELECTROMECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to product defects and irregular shapes, it is difficult to find matching inserts. If the fit is improper, there will be gaps after bonding and the strength is not enough. If an insert matching the defect position is processed first, it will take too long and affect production. efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described in detail below in combination with specific embodiments.

[0017] During concrete implementation: a kind of ABS vacuum low-pressure injection molding and the method for repairing the lug holes of machine-added molded parts, using sodium bicarbonate powder to stack and add to the defect of the auger holes of the formed parts, then dripping glue to infiltrate the sodium bicarbonate powder, and then using Manually shape the shape of the ear hole, and after the glue is cured, it can be ground and repaired in place.

[0018] Specifically, the method includes the following steps: a. Place the formed part flat so that the defect is upward, and insert a standard rod with a diameter smaller than 0.05-0.2 wires in the lug hole into the lug hole vertically; b. Use sodium bicarbonate powder Stack on the defect of the ear hole of the formed part outside the standard rod. The outer surface of the standard rod has a layer of transparent...

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PUM

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Abstract

The invention discloses a support ear hole repairing method of an ABS vacuum low-pressure injection molded part and a machining molded part. The support ear hole repairing method is characterized in that sodium bicarbonate powder is stacked in the defect positions of the molded parts; then, glue is dripped to completely infiltrate the sodium bicarbonate powder; the shapes of support ear holes are manually shaped; and after the glue is cured, the shapes of the support ear holes are grinded and finished in place. The method can quickly finish the repairing of the support ear holes of the ABS molded parts, and has such advantages as simplicity, convenience, quickness, high efficiency and reliable strength and consistent appearance of the repaired mold parts.

Description

technical field [0001] The invention relates to a method for repairing ABS finished products; in particular, it relates to a method for repairing lug holes of ABS vacuum low-pressure injection molding and machined parts. Background technique [0002] Vacuum low-pressure injection molding is a process that completes injection molding with low pressure and high temperature. It is generally used in the manufacture of components such as motorcycle and automobile covers, engine cases, case covers, and water pump covers. When the ABS vacuum low-pressure injection molding process is implemented, it is necessary to make a prototype that simulates the shape of the formed part, and then make a silicone rubber mold based on the prototype, and then vacuum-cast the two-component raw materials of polyol and isocyanate into the silicone rubber mold. However, there are defects such as air shrinkage cavities, inclusions and insufficient pouring during the molding process, and insufficient po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/00
Inventor 谭学兵王东王小平
Owner CHONGQING CONSTR ELECTROMECHANICAL CO LTD