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Plastic suction molding method of large-size plastic plate and large-size plastic sucking machine of large-size plastic plate

A plastic sheet and blister forming technology, which is applied to flat products, household appliances, and other household appliances. It can solve the problems that the fire protection level of PMMA materials does not meet the fire protection requirements of buildings, and achieve the effect of narrow heat-softening temperature.

Active Publication Date: 2010-01-06
上海大生牌业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually, signboards and advertisements often require the appearance of concave and convex characters or patterns. In the industry, organic plastic glass (PMMA) is used as the material, because it cannot be stamped by the mold because it will be broken, and it is often used after proper heating. Blister molding, but the fire protection level of PMMA material does not meet the building fire protection requirements; a kind of strong board (PC) material meets the building fire protection requirements, often after it is properly heated, it meets the building fire protection requirements, suitable for shops, company signs, and advertising Applied materials

Method used

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  • Plastic suction molding method of large-size plastic plate and large-size plastic sucking machine of large-size plastic plate
  • Plastic suction molding method of large-size plastic plate and large-size plastic sucking machine of large-size plastic plate
  • Plastic suction molding method of large-size plastic plate and large-size plastic sucking machine of large-size plastic plate

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Embodiment Construction

[0020] The present invention will be further described now in conjunction with accompanying drawing,

[0021] A method for forming large-scale plastic plates by suction, characterized in that:

[0022] Follow the steps below to implement:

[0023] 1) In the upper and lower plate heating devices where the flat plastic plate is located,

[0024] 2) The upper and lower plate heating devices preheat the plate plastic plate to 130-140°C, heat for 5-6 hours to remove moisture; make the water content of the plastic plate less than 0.02%,

[0025] 3) The upper and lower flat-plate heating devices heat the flat plastic sheet to 180-220°C for 5 minutes, and the plastic sheet becomes soft.

[0026] 4) Turn off the lower plate heating device and move out of the plastic plate area,

[0027] 5) The blister mold at the lower part immediately rises vertically to fit closely with the edge of the plastic sheet,

[0028] 6) The air extractor connected to the air extraction hole of the mold c...

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Abstract

The invention relates to a plastic suction molding method of a large-size plastic plate and a large-size plastic sucking machine of the large-size plastic plate, belonging to the technical field of plastic suction molding. The plastic suction molding method of the large-size plastic plate comprises the following steps: a flat plate type plastic plate is preheated and removed in moisture, the flat plate type plastic plate is preheated till a plastic plate material is hot and flexible, a lower heating device is turned off and removed out, a lower-part mould is immediately upwards removed to be closely combined with the edge of the plastic plate, air is sucked by strong force, negative pressure is formed on the inner surface of the lower-part mould, the plastic plate is moulded by plastic suction and then cooled and demoulded, and a finished product is taken down. The large-size plastic sucking machine is provided with heating devices which are respectively positioned above and below an air-powered chassis, a plastic suction mould is positioned below the lower heating device and is provided with an air suction hole connected with an air suction machine, and a detection device with the temperature taken from the plastic plate is connected with a control device. The invention can integrally mould PC materials of various large-size signboards and posters of shops and companies, which accord with the requirement for building fireproofing grade, in a plastic suction molding way, solves the technical problem of difficult plastic suction processing and provides a plastic suction molding technology method and a plastic suction molding device of plastic suction materials for the signboard plastic suction industry.

Description

technical field [0001] The invention belongs to a material molding technology, and specifically relates to the technical field of blister material molding technology. Background technique [0002] Usually, signboards and advertisements often require the appearance of concave and convex characters or patterns. In the industry, organic plastic glass (PMMA) is used as the material, because it cannot be stamped by the mold because it will be broken, and it is often used after proper heating. Blister molding, but the fire protection level of PMMA material does not meet the building fire protection requirements; a kind of strong board (PC) material meets the building fire protection requirements, often after it is properly heated, it meets the building fire protection requirements, suitable for shops, company signs, and advertising Applied materials . However, in order to plasticize the PC material, the PC material must be heated first, so that the PC material can be maintained a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/10B29C51/46B29C51/42B29C51/30B29C51/26B29L7/00
Inventor 周福生
Owner 上海大生牌业制造有限公司
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