CN101698325A - High/low temperature water cycle injection molding process for outer frame of high gloss flat panel television - Google Patents
High/low temperature water cycle injection molding process for outer frame of high gloss flat panel television Download PDFInfo
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- CN101698325A CN101698325A CN200910193520A CN200910193520A CN101698325A CN 101698325 A CN101698325 A CN 101698325A CN 200910193520 A CN200910193520 A CN 200910193520A CN 200910193520 A CN200910193520 A CN 200910193520A CN 101698325 A CN101698325 A CN 101698325A
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- water
- flat panel
- panel television
- outer frame
- injection molding
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Abstract
The invention discloses a high/low temperature water cycle injection molding process for an outer frame of a high gloss flat panel television, which comprises the following steps: 1) softening tap water via a water softening device at first; 2) pressurizing the softened water to the pressure between 0.9 and 1.0Mpa via a high pressure water pump, and heating the softened water to the temperature from 150 to 180 DEG C by using an electric heating rod so as to realize non-vaporization; 3) feeding hot water into a stationary mold of an injection mold via the high pressure water pump and the control of a valve to uniformly heat the stationary mold to the temperature from 110 to 120 DEG C, and then implementing injection molding by adopting ABS/PMMA plastic alloy; 4) withdrawing the hot water in water passages back to a container upon the completion of glue injection, feeding in cold water to cool the mold to the temperature below 50-60 DEG C, and opening the mold and taking out the workpiece after about 15-30 seconds of the cooling. According to the invention, high temperature high pressure cold/hot water cycle injection process is adopted to effectively eliminate dissolution mark on the frame of the flat panel television, enhance the gloss on the surface of the product and achieve spraying-free effect, therefore, the process can be extensively applied to the production of the outer frame of the high gloss flat panel television.
Description
Technical field
The present invention relates to a kind of injection molding process, particularly a kind of injection molding process of high gloss flat panel television face frame.
Background technology
At present, along with people are more and more higher to the requirement of flat panel TV, also more and more higher to the performance requirement of flat panel TV outward appearance and environmental protection.And the technological process of injection moulding, polishing, spraying Lacquer finish is adopted in the production of current China flat panel TV face frame, this production method is seriously polluted, the cycle is long, cost is high, seriously hindered the healthy sustainable development of flat panel TV industry, in addition, this injection moulding production technology also makes the product surface glossiness reduce, and with a large amount of dissolving traces, thereby be difficult to meet people's making requirement.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of dissolving trace of eliminating flat panel TV face frame, improve the product surface glossiness, reach the HTHP cold of exempting from spraying effect.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high/low temperature water cycle injection molding process for outer frame of high gloss flat panel television, its step is as follows:
1): by water-softening plant running water is softened processing earlier, reduce the content of Ca, Mg ion in the water;
2), the demineralized water after will handling by high-pressure hydraulic pump is pressurized between 0.9～1.0Mpa, with electrically heated rod demineralized water is heated to 150～180 ℃ and does not vaporize;
3), hot water is fed in the injection mold cover half cover half homogeneous heating to 110～120 ℃, adopt ABS/PMMA plastic alloy ejection formation then by the control of high-pressure hydraulic pump and valve;
4), injection draws back the hot water in the water channel in the container after finishing, and feeds cold water with below mold cools down to 50～60 ℃, after about 15～30 seconds of cool time, workpiece is taken out in die sinking.
The invention has the beneficial effects as follows: the present invention adopts the HTHP cold, effectively eliminated the dissolving trace of flat panel TV face frame, improve the product surface glossiness, reach and exempt from spraying effect, thereby can be widely used in the making of outer frame of high gloss flat panel television.
The specific embodiment
A kind of high/low temperature water cycle injection molding process for outer frame of high gloss flat panel television, its step is as follows:
1): by water-softening plant running water is softened processing earlier, reduce the content of Ca, Mg ion in the water, make demineralized water reach the hardness number of industrial demineralized water: hardness is spent less than 1, thereby effectively guarantees not produce incrustation scale in the water heating cooling procedure;
2), the demineralized water after will handling by high-pressure hydraulic pump is pressurized between 0.9～1.0Mpa, with electrically heated rod demineralized water is heated to 150～180 ℃ and does not vaporize;
3), hot water is fed in the injection mold cover half cover half homogeneous heating to 110～120 ℃, adopt ABS/PMMA plastic alloy ejection formation then by the control of high-pressure hydraulic pump and valve; Molding time can be adjusted according to the size and the planform of product, and this step is to feed high pressure-temperature hot water, and instantaneous raising injection mold cover half temperature improves the colloidal sol flowability, eliminates the dissolving trace of injection surface;
4), injection draws back the hot water in the water channel in the container after finishing, and feeds cold water with below mold cools down to 50～60 ℃, after about 15～30 seconds of cool time, workpiece is taken out in die sinking.The concrete time is adjusted according to product size and structure, and this design is recycled to hot water in the container, improves thermal efficiency utilization rate, feeds cold water, and the mould molding cycle is effectively shortened in cooling fast.
The present invention adopts the HTHP cold/hot water cycle injection process, has effectively eliminated the dissolving trace of flat-panel television surface frame, improves the product surface glossiness, reaches and exempts from spraying effect, thereby can be widely used in the making of outer frame of high gloss flat panel television.
Claims (2)
1. high/low temperature water cycle injection molding process for outer frame of high gloss flat panel television, it is characterized in that: this method comprises the steps:
1): by water-softening plant running water is softened processing earlier, reduce the content of Ca, Mg ion in the water;
2), the demineralized water after will handling by high-pressure hydraulic pump is pressurized between 0.9～1.0Mpa, with electrically heated rod demineralized water is heated to 150～180 ℃ and does not vaporize;
3), hot water is fed in the injection mold cover half cover half homogeneous heating to 110～120 ℃, adopt ABS/PMMA plastic alloy ejection formation then by the control of high-pressure hydraulic pump and valve;
4), injection draws back the hot water in the water channel in the container after finishing, and feeds cold water with below mold cools down to 50～60 ℃, after about 15～30 seconds of cool time, workpiece is taken out in die sinking.
2. a kind of high/low temperature water cycle injection molding process for outer frame of high gloss flat panel television according to claim 1 is characterized in that: the described softening processing of step 1) will make demineralized water reach the hardness number of industrial demineralized water: hardness is less than 1 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910193520A CN101698325A (en) | 2009-10-30 | 2009-10-30 | High/low temperature water cycle injection molding process for outer frame of high gloss flat panel television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910193520A CN101698325A (en) | 2009-10-30 | 2009-10-30 | High/low temperature water cycle injection molding process for outer frame of high gloss flat panel television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101698325A true CN101698325A (en) | 2010-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910193520A Pending CN101698325A (en) | 2009-10-30 | 2009-10-30 | High/low temperature water cycle injection molding process for outer frame of high gloss flat panel television |
Country Status (1)
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| CN (1) | CN101698325A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729437A (en) * | 2011-04-15 | 2012-10-17 | 珠海格力电器股份有限公司 | Molding method for panel of injection molded part and air-conditioner display apparatus |
| CN103624915A (en) * | 2013-12-09 | 2014-03-12 | 四川长虹模塑科技有限公司 | Manufacturing method of air-conditioning panel |
| CN107803967A (en) * | 2017-10-26 | 2018-03-16 | 广州中新汽车零部件有限公司 | One kind injection high smooth product is without pressurize moulding process |
-
2009
- 2009-10-30 CN CN200910193520A patent/CN101698325A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729437A (en) * | 2011-04-15 | 2012-10-17 | 珠海格力电器股份有限公司 | Molding method for panel of injection molded part and air-conditioner display apparatus |
| CN102729437B (en) * | 2011-04-15 | 2014-12-17 | 珠海格力电器股份有限公司 | Molding method for panel of injection molded part and air-conditioner display apparatus |
| CN103624915A (en) * | 2013-12-09 | 2014-03-12 | 四川长虹模塑科技有限公司 | Manufacturing method of air-conditioning panel |
| CN107803967A (en) * | 2017-10-26 | 2018-03-16 | 广州中新汽车零部件有限公司 | One kind injection high smooth product is without pressurize moulding process |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100428 |