CN1136991A - Moulding shaping process for surface covering parts - Google Patents
Moulding shaping process for surface covering parts Download PDFInfo
- Publication number
- CN1136991A CN1136991A CN 95105899 CN95105899A CN1136991A CN 1136991 A CN1136991 A CN 1136991A CN 95105899 CN95105899 CN 95105899 CN 95105899 A CN95105899 A CN 95105899A CN 1136991 A CN1136991 A CN 1136991A
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- China
- Prior art keywords
- pressure
- sheet material
- mould
- cowling
- covering
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
A compression moulding technology for surface covering components, especially those for car or motorcycle, which have greate projected area and high requirement on surface finish quality, includes pretreating engineering plastic plate and compressing it on single-side mould by high-pressure air, and features low cost and standard thickness, strength and surface finish quality of surface covering component.
Description
The present invention relates to a kind of moulding shaping process, especially a kind of moulding shaping process of making automobile, motorcycle surface covering parts.
At present, the molding mode of engineering plastics mainly adopts injection moulding, extrusion molding, several technologies such as plastic uptake and blowing, and be applicable to automobile, the making of motorcycle surface covering parts is generally injection molding process, but because of automobile, its projected area of the surface covering parts of motorcycle is big, then requiring corresponding process equipment---vapour moulds machine-tool and mould specification is big, and the thickness of surface covering parts and requirement of strength, make required vapour mould power palpus several times even several requirement that decuples common work, make automobile so adopt existing Shooting Technique, the surface covering parts of motorcycle, the cost of manufacture height, and in manufacturing process, must adopt punch and die moulding, the covering surface smoothness that is made is not satisfactory, gives automobile, the specious shortcoming of bringing of motorcycle.
It is easy to the purpose of this invention is to provide a kind of manufacture craft, and cost of manufacture is lower, and covering thickness, intensity and the surface smoothness made all can reach the compression-molding process of the surface covering parts of standard-required.
The moulding shaping process of surface covering parts of the present invention, its processing step is as follows:
(1) adopts the engineering plastics raw material, be processed into engineering plastics sheet material on request, and engineering plastics sheet material placed in the baking oven preheating and drying;
(2) will be the sheet material of preheating, be provided be hot melt on the special equipment that mould, sheet material compress heater and pressure cowling softening;
(3) mould on the mobile device makes it to contact with sheet material, adds negative pressure earlier, utilizes the sheet material after the plastic uptake principle is softened hot melt to be adsorbed on the mould; Simultaneously, compress pressure cowling, around the sealing plate material, and locking equipment.
(4) charge into gases at high pressure in pressure cowling, compression moulding is adsorbed on the sheet material on the mould, makes the softening sheet material moulding on mould of hot melt, forms covering;
(5) open the water valve that is located on the pressure cowling, evenly be sprayed on the molded covering on mould, the cooling covering with the water that is higher than gas-pressurized pressure;
(6) cool off fully to covering after, stop water spray, discharge gases at high pressure, remove pressure cowling, take out covering, cut edge on request, finish processing.
The mould that is adopted in this technology is an one-side mould.
The interior gases at high pressure of injection pressure cowling that this technology is related, pressure is at 5～15kg/cm
2, be 0.5～10 minute pressing time.
The cooling water of the related injection of this technology, its pressure is higher than 5～10kg/cm of pressurized air pressure
2
This technology is the plastic plate that utilizes after the thermoplastic, by pressure-air compression molding on mould, since compressed air can ten times over negative-pressure vacuum pressure, therefore can reach the moulding purpose ideally on request, reach the desired thickness of surface covering parts, strength criterion.Because of process using the single face mold forming, make the covering outer surface not contact mould, but contact, so can make the covering surface smoothness reach higher standard with pressure-air.Adopt this moulding shaping process, its mould only is 1/tens of a former injection moulding process mould, and the personality of machine-tool, specification etc. are required also greatly to reduce, and the former relatively injection moulding technology of its cost has significantly and descends.This technology is fit to make the surface covering parts that projected area reaches surface smoothness demanding covering, especially automobile, motorcycle greatly.
Followingly further set forth the present invention with reference to embodiment.
With engineering plastics raw material (PVC lucite such as ABS polyethylene), be processed into engineering plastics sheet material, preheating and drying is 12 hours in the special bake oven about 60 ℃.The sheet material of preheating was being heated 3 minutes under 140 ℃ of temperature conditions on the special equipment that is provided with forming convax mould, sheet material hold down gag and pressure cowling, sheet material is softening, on open or the forming convax mould that descends, sheet material is contacted with it, add negative pressure, according to the plastic uptake principle, sheet material is adsorbed on the punch, and simultaneously, the pressure cowling on the equipment presses around the sheet material, make it sealing, and locking.Charged pressure is 10kg/cm in pressure cowling
2Gases at high pressure, compression moulding made the moulding fully on punch of the softening sheet material of hot melt in 3 minutes.After the end to be formed, open the water valve that is located on the pressure cowling, with being higher than gas 7kg/cm
2About water spray moldedly on the plastics of mould, make it cooling.After about 1～3 minute, covering cools off fully, stops water spray, discharges gases at high pressure, removes pressure cowling, takes out covering, cuts edge on request, and manufacture craft is finished.
Claims (3)
1, a kind of moulding shaping process of surface covering parts is characterized in that processing step is as follows:
(1) adopts the engineering plastics raw material, be processed into engineering plastics sheet material on request, and this sheet material placed in the special bake oven preheating and drying;
(2) sheet material of preheating hot melt on the special equipment that does not have mould, sheet material hold down gag and pressure cowling is softening;
(3) mobile mould contacts with sheet material, adds negative pressure, and the sheet material after hot melt is softening is adsorbed on the mould, compresses pressure cowling simultaneously, around the sealing plate material;
(4) charge into gases at high pressure in pressure cowling, compression moulding is adsorbed on the sheet material on the mould, and sheet material moulding on mould that this hot melt is softening forms covering;
(5) open the water valve that is located in the pressure cowling, evenly be sprayed on the covering, cooling with the water that is higher than gas-pressurized pressure;
(6) after covering cools off fully, stop water spray, discharge gases at high pressure, remove pressure cowling, take out covering, cut edge on request, finish processing technology.
2, a kind of moulding shaping process as claimed in claim 1 is characterized in that the gases at high pressure that charge in the pressure cowling, and pressure is 5～15kg/cm
2, be 0.5～10 minute pressing time.
3, a kind of moulding shaping process as claimed in claim 1 is characterized in that the pressure of the cooling water that injects is higher than gases at high pressure 5～10kg/cm in water valve
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95105899 CN1136991A (en) | 1995-05-26 | 1995-05-26 | Moulding shaping process for surface covering parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95105899 CN1136991A (en) | 1995-05-26 | 1995-05-26 | Moulding shaping process for surface covering parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1136991A true CN1136991A (en) | 1996-12-04 |
Family
ID=5075634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95105899 Pending CN1136991A (en) | 1995-05-26 | 1995-05-26 | Moulding shaping process for surface covering parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1136991A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364761C (en) * | 2005-12-31 | 2008-01-30 | 北京玻钢院复合材料有限公司 | Method for mfg. covering unit of composite material for vehicle |
| CN100451280C (en) * | 2005-10-21 | 2009-01-14 | 德胜（苏州）洋楼有限公司 | Method for processing integrated shower room for use in wood house |
| CN102205631A (en) * | 2011-01-20 | 2011-10-05 | 安徽鲲鹏装备模具制造有限公司 | Cooling device used for vacuum forming machine |
| CN103112152A (en) * | 2013-01-05 | 2013-05-22 | 台州市黄岩炜大塑料机械有限公司 | Thermoforming processing method for plastic decorative wall panel |
-
1995
- 1995-05-26 CN CN 95105899 patent/CN1136991A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451280C (en) * | 2005-10-21 | 2009-01-14 | 德胜（苏州）洋楼有限公司 | Method for processing integrated shower room for use in wood house |
| CN100364761C (en) * | 2005-12-31 | 2008-01-30 | 北京玻钢院复合材料有限公司 | Method for mfg. covering unit of composite material for vehicle |
| CN102205631A (en) * | 2011-01-20 | 2011-10-05 | 安徽鲲鹏装备模具制造有限公司 | Cooling device used for vacuum forming machine |
| CN103112152A (en) * | 2013-01-05 | 2013-05-22 | 台州市黄岩炜大塑料机械有限公司 | Thermoforming processing method for plastic decorative wall panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Qingshi Document name: Sight note |
|
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |