Injection mould and Injection molding method

An injection mold and movable mold technology, applied in the field of mold molding equipment, can solve the problems of low molding quality and yield, shrinkage, bulging, etc., and achieve the effects of increasing the flow efficiency of the material flow, increasing the exhaustability, and improving the molding quality.

Inactive Publication Date: 2018-11-09
ZHUHAI GREE PRECISION MOLD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In actual production, defects such as bulging, shrinkage, and lack of glue are

Method used

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  • Injection mould and Injection molding method
  • Injection mould and Injection molding method
  • Injection mould and Injection molding method

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] The applicant found that a single plastic part has uneven thickness, and during the injection molding process, defects such as bulging, shrinkage, and lack of glue are prone to occur at the thin wall. For example, the thickness area of ​​the liquid crystal display area of ​​the panel body of the air conditioner is very thin, and the appearance requirements here are high. If the problem of defects in the thin-walled area of ​​the plastic part cannot be solved, it will not only reduce the appearance and quality of the plastic part, but also increase the cost. These defects are mainly caused b...

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Abstract

The invention provides an injection mould and an injection molding method. The injection mould comprises a moving template and at least moving mould insert arranged on the moving template according toa predetermined position. According to the invention, on the basis of cooperation of the moving mould insert, a waterway, and a gas circuit, air in a mould cavity can flow out, so that mould exhausting is enhanced; the temperature of the moving mould insert during the injection molding process is ensured; because the mould is heated before injection and pressure maintaining, a phenomenon that mobility of the material flow is affected because of too low material flow temperature caused by heat losses of the material flow due to heat transferring and thus a hungry joint problem of an injectionmolding part is avoided. Besides, after injection and pressure maintaining, the mould is cooled by the heat exchange with the waterway, so that the cooling speed and the thermal insulation effect of the mould are controlled; and the material flow temperature is controlled and the material flow flowing efficiency is increased, so that the moulding quality of the thin wall region of a to-be-mouldedelement and the yield of the to-be-moulded element are improved effectively.

Description

technical field [0001] The invention relates to the technical field of mold forming equipment, in particular to an injection mold and an injection molding method. Background technique [0002] In industrial production, the shape of injection molded parts is complex and the demand is large. Usually, there will be uneven wall thickness of injection molded parts. Mobile phones, notebooks, tablet computers, household appliances, etc. are all required to be beautiful, lightweight, and have multiple touch functions. This requires that the injection molded parts of the product must not only have uneven thickness, but also meet the appearance of smooth and defect-free. In actual production, defects such as bulging, shrinkage, and lack of glue are prone to occur at thin-walled parts, resulting in low molding quality and yield. Contents of the invention [0003] In order to solve the above technical problems, an injection mold and an injection molding method for improving the yield...

Claims

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Application Information

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IPC IPC(8): B29C45/26B29C45/34B29C45/73
CPCB29C45/2602B29C45/34B29C45/7312
Inventor 李欣键罗恒王利民杨永刚黄云艳黄炳华施天赐黄泽坚蔡国旗
Owner ZHUHAI GREE PRECISION MOLD CO LTD
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