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Two color injection molding die and injection molding method

A two-color injection molding and mold technology, applied in the field of injection molds, can solve the problems of high production cost and many processes of two-color injection molding, and achieve the effect of reducing development investment and processing procedures

Inactive Publication Date: 2012-03-21
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of high production cost and many processes in the existing two-color injection molding, and proposes a low-cost and few-process two-color injection mold for the TV panel and a method for secondary injection molding using the mold

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  • Two color injection molding die and injection molding method
  • Two color injection molding die and injection molding method
  • Two color injection molding die and injection molding method

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Embodiment Construction

[0021] like figure 1 As shown, the two-color injection mold proposed by the preferred embodiment of the present invention includes a fixed mold 101 and a movable mold composed of a core 201 and a base 202 . Limiting bosses 16, 17 are arranged on both sides of the left and right square irons (horn irons) in the base 202, and the first group of needle plates 1, the second group of needle plates 2 and the third group of needle plates 9 are stacked successively in the base. The third group of needle plates 1, 9 are respectively located below and above the position-limiting bosses 16, 17, and the position-limiting protrusions respectively limit the distances that the needle plates of the first group move upward and the needle plates of the third group move downward. On the left side of the bottom plate of the movable mold, there is vertically provided a central guide column 10 for the three groups of needle plates to slide, and on the left side between the first and second groups o...

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Abstract

A two color injection molding die comprises a fixed die, and a moving die which is composed of a core and a base. Two sides of an inner surface of the base are provided with a limit boss, the base is internally stacked up with a first group of pin plates, a second group of pin plates and a third group of pin plates, the first group of pin plates and the third group of pin plates are respectively positioned below and above the limit boss, and the limit boss respectively limits the distance that the first group of pin plates move upwards and the third group of pin plates move downwards. A moving die base plate is provided with a middle guide post on which the three groups of pin plates slide, a limit screw is positioned between the first group of pin plates and the second group of pin plates, a return mechanism is positioned between the third group of pin plates and the core, and the third group of pin plates are provided with an ejection mechanism which is capable of moving the third group of pin plates upwards and downwards; and the three groups of pin plates are provided with at least one set of pin regulating mechanism which causes the core and a fixed die injection molding cavity to form or block an injection molding space required by post locations of various specifications. The invention further provides an injection molding method. The two color injection molding die andthe injection molding method help overcome defects of the prior art.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to a two-color injection mold for a TV cover and a secondary injection molding method using the mold. Background technique [0002] The molding process of the two-color injection molding face shell parts of the TV requires that the pillars cannot be formed when the transparent material is injected for the first time, and all the pillars of various heights must be formed during the second injection. Using two-color special injection molding machines and standard two-color molds to form large-size two-color parts requires a lot of investment in equipment and molds, so the production cost is high and the production process is more. Contents of the invention [0003] The present invention aims to solve the technical problems of high production cost and many processes of the existing two-color injection molding, and proposes a low-cost and few-process two-color injection mold for a TV pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/26B29C45/16
Inventor 高西成王德辉王玉年安云集储彪
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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