TPV clamping strip extrusion die

An extrusion port and strip clamping technology, applied in the field of TPV clamping strip extrusion die, can solve the problems of poor control of feed pressure, difficult adjustment of coating pressure balance, melt fracture and other problems.

Pending Publication Date: 2021-04-20
贵州红阳密封件有限责任公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing TPV strip extrusion die structure has the following problems: (1) There is only one feed port for the TPV material required for the cavity, and the feed pressure is not easy to control, and the product surface is prone to melt fracture or lines, and the surface is rough and melted. (2) There is no melt po

Method used

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Embodiment Construction

[0016] In order to make the purpose, 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.

[0017] Embodiments of the present invention: the structural representation of the TPV strip extrusion die is as follows Figure 1~4 As shown, it includes the first mouth plate 1, the second mouth plate 2, the third mouth plate 3, the diverter plate 4 and the fixing plate 5 which are sequentially stacked and fixed together. Both the mouth plate 2 and the third mouth plate 3 are provided with interconnected cavities, and the second mouth plate 2 is provided with an auxiliary flow channel 7 on one side of the cavity, and the diverter plate 4 is provided with the first The melt pool 8 connected to the mouth plate 1 is fixedly connected with the skeleton positioning core 6 on the fixed plate 5, the center of the skeleton positioning core 6 is provided ...

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Abstract

The invention discloses a TPV clamping strip extrusion die which comprises a first mouth-shaped plate, a second mouth-shaped plate, a third mouth-shaped plate, a splitter plate and a fixing plate which are sequentially overlapped and fixed together, cavities which communicate with one another are formed in the first mouth-shaped plate, the second mouth-shaped plate and the third mouth-shaped plate, an auxiliary runner is arranged on one side of the cavity of the second mouth-shaped plate; a melt pool communicating with the first mouth-shaped plate is formed in the splitter plate, a framework positioning core is fixedly connected to the fixing plate, a guide hole is formed in the center of the framework positioning core, and main runners are symmetrically formed in the two sides of the framework positioning core. Multi-plate mouth-shaped matching is adopted, two feeding ports and one feeding port are adopted to control feeding of the appearance part of the product, each section of cavity is gradually decreased, the back pressure of each mouth-shaped inlet is increased, and roughness, lines and melt cracking of the appearance surface of the product are reduced; and the other feeding port controls feeding of the lip part, and the length of the lip of the product is controlled by independently adjusting the feeding amount of the lip part.

Description

technical field [0001] The invention relates to a TPV strip extrusion die, which belongs to the technical field of automobile product manufacturing. Background technique [0002] The existing TPV strip extrusion die structure has the following problems: (1) There is only one feed port for the TPV material required for the cavity, and the feed pressure is not easy to control, and the product surface is prone to melt fracture or lines, and the surface is rough and melted. (2) There is no melt pool with equal wall thickness, the TPV rubber is basically cut at 90°, the balance of the coating pressure on both sides of the steel strip is not easy to adjust, and it needs to be repeated during production. The backbone position can only be determined by trial and error to ensure that the TPV completely coats the backbone. Contents of the invention [0003] The object of the present invention is to provide a TPV strip extrusion die with simple structure, convenient debugging, high ...

Claims

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Application Information

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IPC IPC(8): B29C48/30
Inventor 郑伟徐超马丽铭
Owner 贵州红阳密封件有限责任公司
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