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Low-density polyethylene pipe self-reinforcing extruding noses

A low-density polyethylene and extruder head technology, which is applied in the field of plastic product molding processing machinery, can solve problems such as no consideration, and achieve the effects of easy size control, simple strengthening method, and extended service life

Inactive Publication Date: 2004-04-21
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used plastic extrusion head mainly considers the size and shape, and basically does not consider how to further strengthen and improve the strength of the material during the extrusion process.

Method used

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  • Low-density polyethylene pipe self-reinforcing extruding noses
  • Low-density polyethylene pipe self-reinforcing extruding noses
  • Low-density polyethylene pipe self-reinforcing extruding noses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] Embodiment: a kind of low-density polyethylene pipe self-reinforcing extruder head (see figure 2 ), including the existing machine head body 1, diverter cone 2, bracket 3, gland 6, mandrel 8, heating mantle 9, die mouth cover 7a, faucet 13, water jacket 14, water jacket cover 15, pull rod 16 , splitter taper rod 17 and relevant sealing member 11 and screw 4,5,10, it is characterized in that the corner self-reinforcing module 7b has been increased at die mouth cover 7a place (see figure 2 ), the self-reinforcing module 7b is a rotating body with a certain thickness, which has a corner channel structure inside, and a circular cooling water channel 18 is arranged outside the corner channel structure.

[0012] There can be four 90° corners on the above-mentioned self-reinforcing module 7b with corner channel structure.

[0013] The above-mentioned annular cooling water channel 18 provided outside the corner channel structure can be a spiral water channel (see figure 2 ...

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PUM

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Abstract

A self-strengthened extruding head for extruding out low-density polyethylene pipe is composed of main body, flow splitting cone and its rod, supporter, pressing cover, core die, heating sleeve, die mouth sleeve, water tap, water jacket and its cover, pull rod, sealing part and screws. It features its additional self-strengthened corner module which is a rotary body with a channel structure and a ring channel of cooling water. Its advantages are easy control of pipe size, high quality of product, and long service life of pipe.

Description

(1) Technical field: [0001] The invention relates to a molding and processing machine for plastic products, in particular to a self-reinforcing extruder head for low-density polyethylene pipes. (two) background technology: [0002] Plastic extrusion molding is one of the main processing methods of plastic products. It turns the solid raw material into a uniform melt through the heating of the extruder, and under the action of the extrusion system, it enters and passes through the head at a certain pressure, temperature and speed, such as figure 1 As shown, the high-temperature melt first enters the annular space between the die body 1 and the splitter cone 2, and continues to flow forward along the shape of the annular space between the die 7 and the mandrel 8 to obtain a tubular blank, and then passes through the cooling water Cooling and shaping systems such as sleeve 14 make the tube blank into the required tube product. Plastic extruded pipes account for a large propor...

Claims

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Application Information

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IPC IPC(8): B29C48/32
Inventor 崔宏祥
Owner TIANJIN UNIVERSITY OF TECHNOLOGY