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Mold system with high/low-temperature rapid conversion function

A fast conversion, low temperature technology, applied in the field of compression molding, can solve problems such as affecting the performance or production efficiency of molded products, excessive heating and cooling conversion time, etc., and achieve the effect of safe demoulding and uniform internal stress distribution.

Inactive Publication Date: 2017-01-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide an energy-saving, high-efficiency, strong applicability, and good product effect in view of the problem that the long heating and cooling conversion time in the existing molding process affects the performance or production efficiency of the molded product. , Safe high / low temperature fast switching mold system

Method used

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  • Mold system with high/low-temperature rapid conversion function

Examples

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Comparison scheme
Effect test

Embodiment

[0025] see figure 1 , a high / low temperature fast switching mold system in the illustration is a preferred embodiment of the present invention, specifically including a high temperature circulation system 1, a low temperature circulation system 2, and a mold assembly composed of an upper mold plate 3 and a lower mold plate 4. An upper die serpentine pipe 301 and a lower die plate 401 are respectively provided inside the upper die plate 3 and the lower die plate 4 for heating or cooling the molding material in the inner cavity of the die. The upper mold serpentine tube 301 and the lower mold serpentine tube 401 respectively form independent circuits with the high temperature circulation system 1 and the cooling circulation system 2, and the high temperature circulation system 1 and the cooling circulation system 2 are heated and cooled by circulating fluid medium , the loop of the high-temperature circulation system and the loop of the low-temperature circulation system are res...

example 1

[0034] Example 1: Preparation of foam sandwich structure flat panel

[0035] In the preparation process of the foam sandwich structure plate in this example, a kind of such as figure 1 The specific preparation method of the high / low temperature rapid conversion mold system shown includes the following steps in sequence:

[0036] 1. Press figure 1 Connect the high / low temperature quick change mold system;

[0037] 2. Close the cryogenic pumping valve 207 and the cryogenic return valve 205;

[0038] 3. Turn on the heater 103 and the high-temperature agitator 102 to uniformly heat the high-boiling liquid (such as silicone oil) in the high-temperature box to 80°C;

[0039] 4. Turn on the cooler 203 and the low-temperature stirrer 202 to uniformly cool the high-boiling liquid (such as silicone oil) in the low-temperature box 204 to 20°C;

[0040] 5. Open the high-temperature pumping valve 107 and the high-temperature return valve 205, so that the high-temperature box and the se...

example 2

[0047] Example 2: Preparation of Glass Fiber Reinforced Thermoplastic Composite (GF / PP)

[0048] The preparation process of the glass fiber reinforced thermoplastic composite material (GF / PP) in this example uses a method such as figure 1 The specific preparation method of the high / low temperature rapid conversion mold system shown includes the following steps in sequence:

[0049] 1. Press figure 1 Connect the high / low temperature quick change mold system;

[0050] 2. Close the cryogenic pumping valve 207 and the cryogenic return valve 205;

[0051] 3. Turn on the heater 103 and the high-temperature agitator 102 to uniformly heat the high-boiling liquid (such as silicone oil) in the high-temperature box to 200°C;

[0052] 4. Turn on the cooler 203 and the low-temperature stirrer 202 to uniformly cool the high-boiling liquid (such as silicone oil) in the low-temperature box 204 to 20°C;

[0053] 5. Open the high-temperature pumping valve 107 and the high-temperature return...

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Abstract

The invention discloses a mold system with a high / low-temperature fast conversion function. An upper mold plate and a lower mold plate of a mold are each internally provided with a snake-shaped pipe. The upper mold snake-shaped pipe and a high-temperature circulating system form an independent loop. The lower mold snake-shaped pipe and a cooling circulating system form an independent loop. A circulating fluid medium is adopted for the high-temperature circulating system for heating, a circulating fluid medium is adopted for the cooling circulating system for cooling, and the loop of the high-temperature circulating system and the loop of the low-temperature circulating system are each provided with a switching valve. According to the mold system with the high / low-temperature fast conversion function, the mold can be heated or cooled rapidly through high-temperature fluid or low-temperature fluid, high / low temperature rapid conversion of the mold is achieved, it is guaranteed that a material (or a component) is shaped under a uniform temperature field, internal stress distribution is uniform, and it is guaranteed that the performance of products is stable and deformation is prevented; and besides, rapid and safe demolding can be achieved.

Description

technical field [0001] The invention belongs to the technical field of compression molding, and in particular relates to a mold system which utilizes a liquid medium to realize fast switching between high and low temperatures. Background technique [0002] The molding process is one of the ancient and effective processes for the preparation of materials (or components). It is to put a certain amount of molding material into the metal mold, and under a certain temperature and pressure, make the molding material in the mold. A processing method of solidification molding in the cavity. Tooling has a significant impact on the success of the compression molding process. [0003] When using the compression molding process to prepare various materials and components, especially thermoplastic (or thermosetting) plastics and their composite materials, it is often necessary for the mold to be transformed between 80-300 / 0-50°C. , so that the material flows, fills and solidifies in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/52
CPCB29C43/52
Inventor 王春齐黄小忠杜作娟岳建岭唐秀之
Owner CENT SOUTH UNIV
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