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Extrusion-die pressing precise forming method and apparatus therefor

A technology of precision molding and extrusion die head, applied in the field of extrusion-molding precision molding, it can solve the problems that the control conditions and operation processes cannot be strictly the same, it is difficult to ensure the precision of precision products, and it is difficult to precisely shape, etc. The effect of shortened molding cycle and continuous molding

Inactive Publication Date: 2009-06-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Continuous and repeated mold filling, because the control conditions and operating process cannot be strictly the same, it is difficult to ensure the accuracy of precision products, that is, it is difficult to achieve precision molding
In addition, due to the process of maintaining pressure and cooling after filling, the cycle is longer; repeated heating, melting and cooling of the product will undoubtedly consume a lot of energy

Method used

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  • Extrusion-die pressing precise forming method and apparatus therefor
  • Extrusion-die pressing precise forming method and apparatus therefor
  • Extrusion-die pressing precise forming method and apparatus therefor

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] Such as figure 1 , 2 , 3, the equipment is composed of three parts: billet extruding and cutting device, molding device, and billet transfer device, and all devices are fixed on the chassis 17, wherein

[0025] Billet extrusion and cutting device: composed of a hopper 11, an extruder 1, an extrusion die 2, and a cutting rod device 4, and is located at the left end of the entire molding equipment. The hopper 11 is a part of the extruder, the extrusion die 2 is fixed on the extruder 1, the cutting rod 4 is installed in the extrusion die 2, and the blank 3 is cut off by the up and down movement of the cutting rod 4.

[0026] Molding device: It is composed of a stamping system 7, an upper mold 8 of a pressing mold, a lower mold 9 and a finished product warehouse 10, and is located in the middle of the entire molding equipment. The upper mold 8 is fixed on the stamping system 7, and the lower mold 9 is fixed on the end of the billet transfer device 5, and can reciprocate l...

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Abstract

The invention relates to a squeeze-mould press precise forming method and the equipment. The said method comprises the raw material melting plastification through squeeze machine, the precise quantitative cut of the base, the linear to-and-fro moving device of the receiving base send it to the mould chamber, and then get the final product through the punch device. The said equipment is composed of the squeeze and cut devices on the base frame, the mould press device, the base receiving and transporting device. Because the mould forming time superposes the time of base squeeze, so the circle period is short. As the cut material control is precise, so the cutting amount is even. The base material press is undergoing in low temperature so as to realize the precise forming and to reduce the energetic consumption.

Description

technical field [0001] The invention relates to an extrusion-molding precision molding method and equipment. The invention mainly aims at the improvement of the preparation method and equipment of some products with symmetrical shapes in polymer processing. Background technique [0002] In the prior art, most of these products are prepared by injection molding, that is, using an injection machine to mix the raw materials evenly, melt and plasticize them, fill them quantitatively into the molding mold, and undergo pressure maintaining and cooling to obtain the final product. [0003] The processing method of injection molding has high requirements on the structure of the mold, and the gate, runner and cooling system all directly affect the quality of the final product. The control of the mold filling process, the pressure holding control, and the ejection control of the product are also very demanding, and these will directly affect the product quality. For continuous and re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/02
Inventor 瞿金平文劲松
Owner SOUTH CHINA UNIV OF TECH
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