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Thermoplastic plastic hot-press forming mold and mold taking method thereof

A thermoplastic, hot-pressing molding technology, applied in sampling, analyzing materials, measuring devices, etc., can solve problems such as difficulty and single mold taking, and achieve the effect of simple operation, solving difficult mold taking, and not easy to damage.

Active Publication Date: 2021-12-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a thermoplastic thermoforming mold and its mold taking method, which solves the problem of single mold and taking mold in the existing thermoplastic material molding process. Difficult problem

Method used

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  • Thermoplastic plastic hot-press forming mold and mold taking method thereof
  • Thermoplastic plastic hot-press forming mold and mold taking method thereof
  • Thermoplastic plastic hot-press forming mold and mold taking method thereof

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specific Embodiment

[0040] Specific examples are as follows: Prepare ultra-high molecular weight polyethylene raw powder (ultra-high molecular weight polyethylene powder is used in this embodiment, but this molding die is applicable to all thermoplastic materials). Place the lower formwork 10 on a flat position, install the mold taking pad 9 on the lower formwork 10, fix the middle formwork 8 and the lower formwork 10 through the fixing bolts 11, and place Figure 7 For the tensile sample mold shown, add ultra-high molecular weight polyethylene powder to the inside of the mold. The thickness of the tensile sample mold should be slightly smaller than the standard thickness, so as to prevent the thickness from reaching If it is less than the standard requirement, the upper template 7 is placed to realize mold closing.

[0041] Put the installed hot pressing mold into the platform center of the hot press, start the hot press, set the temperature at 100°C-500°C, and the pressure at 2-30Mpa, wait for ...

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Abstract

The invention discloses a thermoplastic plastic hot-press forming mold and a mold taking method thereof. The mold comprises a lower mold plate, a mold taking cushion block, a middle mold plate and an upper mold plate. A groove matched with the mold taking cushion block is formed in the upper surface of the lower mold plate, the mold taking cushion block is movably arranged in the groove, a through hole is further formed in the middle of the lower mold plate, and the mold taking cushion block can be touched through the through hole. The middle mold plate is arranged on the lower mold plate in a sleeving manner, the middle mold plate, the lower mold plate and the upper mold plate form a mold cavity, and different types of molds are placed in the mold cavity. The mold further comprises a mold taking sleeve, a hydraulic rack and a piston rod. According to the thermoplastic plastic hot-press forming mold and the mold taking method thereof, different types of molds are placed in the mold cavity, so that the problem of mold simplification of an existing thermoplastic material compression molding process is solved; and the groove matched with the mold taking cushion block is formed in the upper surface of the lower mold plate, and the through hole is formed in the middle of the lower mold plate, so that the piston rod can penetrate through the through hole to touch the mold taking cushion block, and the problem that mold taking is difficult is solved.

Description

technical field [0001] The invention belongs to the technical field of thermoplastics preparation, and in particular relates to a thermoplastic hot-press forming mold and a mold taking method thereof. Background technique [0002] Thermoplastics refer to materials that can soften above a certain temperature and have a certain degree of fluidity, and show hardening characteristics after cooling. This state can be repeated many times and always has plasticity. Polyethylene, polypropylene, polyvinyl chloride, etc. are all thermoplastics. [0003] Compared with metals, thermoplastics have many advantages, such as short processing time, high specific strength, recyclability, light weight, high rigidity, etc., and can achieve the purpose of weight reduction, shock absorption, and noise reduction. With the continuous advancement of the concept of "replacing steel with plastic", the average annual growth rate of the global engineering plastics market demand will reach 10% to 15%. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/36B29C43/50G01N1/36
CPCB29C43/36B29C43/50G01N1/36G01N2001/366
Inventor 周新聪杨超振黄健汪鹏
Owner WUHAN UNIV OF TECH
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