CN103192482A - Injection molding process of POM (polyoxymethylene) plastic installing support - Google Patents
Injection molding process of POM (polyoxymethylene) plastic installing support Download PDFInfo
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- CN103192482A CN103192482A CN 201310145846 CN201310145846A CN103192482A CN 103192482 A CN103192482 A CN 103192482A CN 201310145846 CN201310145846 CN 201310145846 CN 201310145846 A CN201310145846 A CN 201310145846A CN 103192482 A CN103192482 A CN 103192482A
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- injection
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- Injection Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to an injection molding process for a POM (polyoxymethylene) plastic installing support. The injection molding process comprises the following steps of: (1) raw material pretreatment; (2) pretreatment by using an injection molding system and an injection mold; (3) plasticizing; (4) injection; (5) pressure maintaining; (6) cooling forming; and (7) mold opening. The prepared installing support is simple in producibility, has high impact resistance, high strength, excellent chemical resistance, good dimensional stability and good surface smoothness.
Description
Technical field
The present invention relates to a kind of injection molding process, particularly a kind of Shooting Technique that installs and fixes the mounting bracket of vehicle body panel beating and bumper.
Background technology
Injection moulding is a kind of general plastic shaping method, is widely used in auto parts and components and makes the field.Injection machine is to utilize mould to make the capital equipment of the plastic products of different shape in liquid molten attitude plastics.Bumper mount requires strict aspect intensity, hardness, rigidity, and nature requires also strict aspect injection moulding, so we carry out perfect to its Shooting Technique.
Summary of the invention
At above deficiency, the object of the present invention is to provide a kind of POM plastic mounting bracket Shooting Technique, effectively improve this handicraft product quality, effectively reduce molding cycle, enhance productivity, save cost.
Technical scheme of the present invention realizes in the following manner: a kind of POM plastic mounting bracket Shooting Technique may further comprise the steps: 1) pretreatment of raw material: 2) adapted to injection system and injection mold preliminary treatment: 3) plasticizing; 4) injection: 5) pressurize; 6) cooling forming; 7) die sinking; It is characterized in that:
1), pretreatment of raw material: utilize baking oven that the POM plastic pellet is carried out 4 hours drying, baking temperature is 60-70 ℃;
2), adapted to injection system and injection mold preliminary treatment: the barrel in the adapted to injection system is heated to 135-175 ℃;
3), plasticizing: the POM particle that the step 1) preliminary treatment is good adds to through step 2) in the barrel handled, be heated to molten condition;
4), injection: with the POM of molten condition through step 2) nozzle of the hot flow path handled is expelled to that injection process is divided into two stages in the heated mould:
The phase I injection pressure is 80Kg/cm
2
The second stage injection pressure is 40Kg/cm
2
5), pressurize: pressure is 55Kg/cm
2, the dwell time is 8S;
6), cooling forming: be 35S cool time;
7), die sinking: part is manually taken out in die sinking.
The present invention has reduced car light lining frame molding cycle and production cost, effectively raises the quality of finished product.Have easy manufacturability, high impact resistance, high strength, good chemical resistance, dimensional stability is good, and product surface fineness is good.
The specific embodiment
A kind of PC plastics car light lampshade Shooting Technique may further comprise the steps:
1, pretreatment of raw material: utilize baking oven that the POM plastic pellet is carried out 4 hours drying, baking temperature is 60-70 ℃;
2, adapted to injection system and injection mold preliminary treatment: the barrel in the adapted to injection system is heated to 135-175 ℃;
3 plasticizings: the raw material plasticizing: the POM particle that step 1 preliminary treatment is good adds in the barrel that step 2 is handled, and is heated to molten condition;
4, Guan Mo;
5 injections: the nozzle of the hot flow path that the POM of molten condition is handled through step 2 is expelled to that injection process is divided into two stages in the heated mould: the phase I injection pressure is 80Kg/cm
2The second stage injection pressure is 40Kg/cm
2
6, pressurize: pressure is 55Kg/cm
2, the dwell time is 8S;
7, cooling forming: be 35S cool time;
8, die sinking: part is manually taken out in die sinking.Repeat 4 to 8 operations, finish up to production.
Product is checked the surface must not have that filamentary silver, foreign matter, stain, contracting are flat, buckling deformation, lack defective such as material.
Claims (1)
1. a POM plastic mounting bracket Shooting Technique may further comprise the steps: 1) pretreatment of raw material: 2) adapted to injection system and injection mold preliminary treatment: 3) plasticizing; 4) injection: 5) pressurize; 6) cooling forming; 7) die sinking; It is characterized in that:
1), pretreatment of raw material: utilize baking oven that the POM plastic pellet is carried out 4 hours drying, baking temperature is 60-70 ℃;
2), adapted to injection system and injection mold preliminary treatment: the barrel in the adapted to injection system is heated to 135-175 ℃;
3), plasticizing: the POM particle that the step 1) preliminary treatment is good adds to through step 2) in the barrel handled, be heated to molten condition;
4), injection: with the POM of molten condition through step 2) nozzle of the hot flow path handled is expelled to that injection process is divided into two stages in the heated mould:
The phase I injection pressure is 80Kg/cm
2
The second stage injection pressure is 40Kg/cm
2
5), pressurize: pressure is 55Kg/cm
2, the dwell time is 8S;
6), cooling forming: be 35S cool time;
7), die sinking: part is manually taken out in die sinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310145846 CN103192482A (en) | 2013-04-25 | 2013-04-25 | Injection molding process of POM (polyoxymethylene) plastic installing support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310145846 CN103192482A (en) | 2013-04-25 | 2013-04-25 | Injection molding process of POM (polyoxymethylene) plastic installing support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103192482A true CN103192482A (en) | 2013-07-10 |
Family
ID=48715386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310145846 Pending CN103192482A (en) | 2013-04-25 | 2013-04-25 | Injection molding process of POM (polyoxymethylene) plastic installing support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103192482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079334A (en) * | 2016-07-12 | 2016-11-09 | 合肥新沪屏蔽泵有限公司 | A kind of preparation method of shielded electric pump electric machine casing |
| WO2017190459A1 (en) * | 2016-05-04 | 2017-11-09 | 四维尔丸井(广州)汽车零部件有限公司 | Overlapping mechanism and injection moulding method therefor |
-
2013
- 2013-04-25 CN CN 201310145846 patent/CN103192482A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190459A1 (en) * | 2016-05-04 | 2017-11-09 | 四维尔丸井(广州)汽车零部件有限公司 | Overlapping mechanism and injection moulding method therefor |
| CN106079334A (en) * | 2016-07-12 | 2016-11-09 | 合肥新沪屏蔽泵有限公司 | A kind of preparation method of shielded electric pump electric machine casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |