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Gate ejection structure of mould

A technology of ejection and mold, applied in the field of ejection gate structure of molds, can solve problems such as affecting mold output efficiency and increasing product rejection rate, and achieves reduction of cold spot probability, improvement of output efficiency, and increase of qualified rate. Effect

Inactive Publication Date: 2012-01-25
VANGUARD TECH WUXI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing mold structure will increase the reject rate of the product and affect the output efficiency of the mold

Method used

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  • Gate ejection structure of mould
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Embodiment Construction

[0007] See figure 1 , which includes a front template 1, a rear template 2, a front mold core 3, a rear mold core 4, the cavity between the front mold core 3 and the rear mold core 4 is a mold cavity, and the product to be molded is located in the mold cavity 5, and the runner 6 After penetrating through the front model core 3, it is connected to the latent gate structure 7, and the latent gate structure 7 is connected to the cavity. The top end is mounted on the latent gate structure 7, the bottom end of the gate thimble 11 penetrates the face needle plate 9 and then fastens and connects the top boss 13 of the top block insert 12, and the bottom needle plate 10 is provided with a top with a large top and a small bottom. The block insert is installed through the groove 14, and the top boss 13 is installed on the upper groove body of the top block insert installed through groove 14, and there is a gap 15 between the bottom end surface of the needle plate 9 and the top surface o...

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Abstract

The invention provides a gate ejection structure of a mould, which is used for enabling cold material debris remained on a gate of the mould to be little when a gate and a product are separated, the probability of cold material spots appearing on the surface of the product to be reduced, the yield of the product to be increased and the output efficiency of the mould to be increased. The gate ejection structure of the mould comprises a front mould plate, a back mould plate, a front mould core and a back mould core, wherein a cavity between the front mould core and the back mould core is a diccavity; a runner is communicated with a subsurface gate structure after penetrating through the front mould core and the back mould core; the subsurface gate structure is communicated with the diccavity; and the bottoms of ejector pins of the product are fixedly connected with a combination body of an ejector retainer plate and an ejector base plate. The gate ejection structure of the mould is characterized in that: the top end of an ejector pin of the gate is ejected on the subsurface gate structure, and the bottom end of the ejector pin of the gate is fixedly connected with a top boss of an ejector block insert after penetrating through the ejector retainer plate.

Description

technical field [0001] The invention relates to the technical field of mold structure, in particular to the ejection gate structure of the mold. Background technique [0002] In the existing molds with latent gates, it is often found that irregular cold spots appear on the surface of the molded product. According to the analysis: the last time when the latent gate was separated from the product, the cold slug chips in the runner remain on the At the gate of the mold, the cold material chip is washed into the cavity when the injection molding is performed again, which is the cold material spot on the surface of the product we see. Further in-depth analysis found that: the cold shavings of the existing molds are produced when the gate and the product are ejected at the same time, in the process of unstable breaking and separation. Therefore, the existing mold structure will increase the reject rate of the product and affect the output efficiency of the mold. Contents of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C45/27B29C45/40
Inventor 张卫
Owner VANGUARD TECH WUXI
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