CN100519135C - Injection molding production method of conic transparent parts - Google Patents
Injection molding production method of conic transparent parts Download PDFInfo
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- CN100519135C CN100519135C CNB2005100405032A CN200510040503A CN100519135C CN 100519135 C CN100519135 C CN 100519135C CN B2005100405032 A CNB2005100405032 A CN B2005100405032A CN 200510040503 A CN200510040503 A CN 200510040503A CN 100519135 C CN100519135 C CN 100519135C
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Abstract
The present invention discloses an injection molding production method for transparent material and conical parts, which mainly comprises the following steps: a) a main nozzle with large diameter whicThe invention discloses injection molding method for transparent material and conical parts and comprises following steps: a. set main injection nozzle with large diameter of 300%-400% compared with gh is 300% to 400% of the conventional diameter is used on a mould; b) the ejaculation speed is controlled to be 20% to 30% of the conventional speed; c) pressure is kept about 90 seconds to 100 secondeneral value; b. control the injection speed as 20%-30% of general speed; c. when ending injection, keep pressure as 20-25P/ square cm for 90-100s; d. cool for 50-55s, demould and cooling form in clams under the pressure of 20 Pa /cm 2 to 25 Pa /cm 2 after ejaculation is finished; d) the mould is released after the mould is cooled for 50 seconds to 55 seconds after the pressure keep is finished, ap. It can decrease the form of bubble in injection molding parts greatly and increase rate of finished products. nd a conical part is placed in a clamp to be cooled and shaped after the mould is released. The present invention has the advantages that the formation of air bubbles in injection molding parts is greatly reduced, and the rate of finished products is improved.
Description
Technical field
The present invention relates to a kind of injection molding production method of plastic products, especially a kind of injection molding production method of solid transparent plastic products, specifically a kind of injection molding production method of conical GPPS transparent parts.
Background technology
The main body that uses in a large number in certain communication product as shown in Figure 1 is conical transparent plastic part, and material therefor is transparent GPPS material, requires product surface smooth, transparent, inner no bubble, impurity.If carry out mould design and moulding by traditional Shooting Technique, because it is inconsistent that properties of materials adds product each several part wall thickness, size, be easy to produce bubble, not only not attractive in appearance, and badly influencing the normal performance of function, its yield rate has only about 30%, makes the cost height, yield poorly, can't meet consumers' demand.
Summary of the invention
The injection molding production method that the purpose of this invention is to provide a kind of conic transparent parts, with solve exist at present owing to there is the low problem of yield rate that causes in bubble.
Technical scheme of the present invention is:
A kind of injection molding production method of conic transparent plastics by microwave part parts is characterized in that may further comprise the steps:
A kind of injection molding production method of conic transparent parts is characterized in that may further comprise the steps:
A, adopt major diameter master geat on mould, main geat diameter is 300%～400% of a normal dia;
B, control issuing velocity are 20%～30% of conventional speeds;
C, penetrate to finish back pressurize 90～100 seconds under the pressure of 20～25 handkerchiefs;
D, pressurize finish back cooling demoulding after 50～55 seconds, insert after the demoulding and carry out cooling and shaping in the anchor clamps.
Should carry out the final finishing of part in case of necessity.
Beneficial effect of the present invention:
1, starts with from Mould design, be equipped with the reduction shaping speed simultaneously, prolong a series of measures such as dwell time and cool time, solved the problem of the easy formation bubble that this part exists for a long time, yield rate is brought up to more than 80% from original 30%, help reducing cost, enhance productivity.
2, this technology can supply the reference of similar real core body transparent injection-molded parts, especially strengthen the breakthrough in the once design that the application of measure in obtaining satisfied injection moulding effect such as injection hole size, the design of employing down gate are plastic article industry, can on Related product, vigorously promote the use.
Description of drawings
Fig. 1 is a product design structural representation of the present invention.
Fig. 2 is the structural representation of typing anchor clamps of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
The manufacturing process of the transparent microwave antenna of a kind of conical GPPS, the profile of this transparent parts as shown in Figure 1, the dimensional requirement of each several part is as shown in the table.
Can adopt following technological parameter to carry out injection moulding to above-mentioned antenna.
A, adopt major diameter master geat on mould, main geat diameter is 300%～400% of a normal dia; The main geat diameter of this example is 16mm.
B, control issuing velocity are 20%～30% of conventional speeds; Concrete speed can be 3～5mm/s;
C, penetrate to finish back pressurize 90～100 seconds under the pressure of 20～25 handkerchiefs;
D, pressurize finish back cooling demoulding after 50～55 seconds, insert after the demoulding and carry out cooling and shaping in the anchor clamps as shown in Figure 2.
The product of present embodiment is a cone, uses transparent GPPS manufacture of materials, requires product surface smooth, and is transparent, inner no bubble, impurity.
According to product structure feature when the die sinking adopting main cast gate charging to be advisable, this routine gate diameter is φ 16mm (is equivalent to φ 18mm 88%).What injection-moulding device adopted is the 220T injection moulding lathe of Dong Hua company, and what raw material adopted is the transparent GPPS material of raising sub-BASF AG, and the trade mark is PG33.By carrying out injection moulding according to aforementioned technology, the yield rate of product can be stabilized in more than 85%.
Claims (2)
1, a kind of injection molding production method of conical GPPS transparent parts is characterized in that may further comprise the steps:
A, adopt major diameter master geat on mould, main geat diameter is 300%～400% of a normal dia;
B, control issuing velocity are 3～5mm/s;
C, penetrate to finish back pressurize 90～100 seconds under the pressure of 20～25 handkerchiefs;
D, pressurize finish back cooling demoulding after 50～55 seconds, insert after the demoulding and carry out cooling and shaping in the anchor clamps.
2, the injection molding production method of conical GPPS transparent parts according to claim 1 is characterized in that should repairing in case of necessity after the demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100405032A CN100519135C (en) | 2005-06-13 | 2005-06-13 | Injection molding production method of conic transparent parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100405032A CN100519135C (en) | 2005-06-13 | 2005-06-13 | Injection molding production method of conic transparent parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1701941A CN1701941A (en) | 2005-11-30 |
| CN100519135C true CN100519135C (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100405032A Active CN100519135C (en) | 2005-06-13 | 2005-06-13 | Injection molding production method of conic transparent parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100519135C (en) |
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2005
- 2005-06-13 CN CNB2005100405032A patent/CN100519135C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1701941A (en) | 2005-11-30 |
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Owner name: NANJING HUAGE ELECTRONICS + AUTOMOBILE PLASTIC IND Free format text: FORMER OWNER: PANDA ELECTRONICS GROUP CO., LTD. Effective date: 20100416 Owner name: PANDA ELECTRONICS GROUP CO., LTD. NANJING PANDA EL Free format text: FORMER OWNER: NANJING PANDA ELECTRONICS CO., LTD. |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20100416 Address after: 210002 Zhongshan East Road, Jiangsu, China, No. 301, No. Co-patentee after: Panda Electronics Group Co., Ltd. Patentee after: Nanjing Huage Electric Molding Co., Ltd. Co-patentee after: Nanjing Xiongmao Electronics Co., Ltd. Address before: 210002 Zhongshan East Road, Jiangsu, China, No. 301, No. Co-patentee before: Nanjing Xiongmao Electronics Co., Ltd. Patentee before: Panda Electronics Group Co., Ltd. |