CN102601920B - Production method for covering plastic on copper part - Google Patents
Production method for covering plastic on copper part Download PDFInfo
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- CN102601920B CN102601920B CN201210082728.4A CN201210082728A CN102601920B CN 102601920 B CN102601920 B CN 102601920B CN 201210082728 A CN201210082728 A CN 201210082728A CN 102601920 B CN102601920 B CN 102601920B
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Abstract
The invention relates to a method for producing and machining, in particular to a production method for covering a plastic layer on a copper metal part. A production method for covering plastic on a copper part, disclosed by the invention, comprises the following steps of: a) placing the copper part on a product mould; b) pre-heating the temperature of the product mould and keeping a needed production temperature; c) spraying the plastic into the product mould through an injection molding machine; d) keeping the pressure of the mould by the injection molding machine; and e) de-molding a product after the mould is cooled, wherein the production temperature of the product mould is controlled within 105-115 DEG C; the spraying pressure of the injection molding machine is controlled: the spraying pressure of the first section is 95-105 MPa, the spraying pressure of the second section is 60-70 MPa and the spraying pressure of the third section is 10-20 MPa; a pressure keeping process is controlled: the pressure keeping of the first section is 20-30 MPa and the pressure keeping time is 2 seconds; the pressure keeping of the first section is15-25 MPa and the pressure keeping time is 5 seconds; and a plastic feeding way of a plastic feeding opening of the product mould is improved: the fed plastic of the plastic feeding opening flows to the middle part along two sides. The production method for covering the plastic on the copper part, disclosed by the invention, is used for producing bathroom water heating products with the copper parts which are covered by the plastic.
Description
Technical field
The present invention relates to a kind of method of production and processing, specifically the production method of coated plastic layer on copper metalwork, is mainly used in the production of bathroom water heating product.
Background technology
In bathroom water heating product, water pipe, the first-class accessory of the fire hose are generally the factor of considering corrosion resistance and mechanical strength in process of production.Therefore, early stage water pipe, copper of the most employing of the first-class bathroom water heating product of fire hose accessory or alloy components are produced.Along with the raising of the level of production, and manyly start with from cost consideration, plastic applications has been become to a kind of trend in bathroom water heating product.By coated certain plastic cement forms on copper part this novel bathroom water heating product have equally corrosion resistance characteristic under, the product that weight is compared original copper or alloy components is stronger, production cost is also lower simultaneously.As a kind of tap that is coated with plastic layer of Chinese Patent Application No. 20102030038.3, and a kind of structure for water tap of Chinese Patent Application No. 201220020552.5 and a kind of improved faucet of number of patent application 201220020539.X that applicant has proposed all adopt this process and realize.
The production method preparation of the coated plastic cement of existing this copper part is because of the bathroom water heating product that exists some defective workmanships to cause the to produce part that still comes with some shortcomings, mainly be: the associativity of plastic cement and copper part is not good, and cause the torsion of product, moment of flexure cannot meet the demands, and Sealing Surface fails to meet water shutoff requirement; Product surface fineness is not good enough yet in addition.
Summary of the invention
Therefore, applicant, through constantly research and exploration, constantly improves trial to production technology, proposes the production method of the coated plastic cement of a kind of improved copper part, can make to produce the plastic cement of product and the associativity of copper part and reach better degree, meet performance requirement.
The present invention is specifically achieved through the following technical solutions:
The production method of the coated plastic cement of copper part, comprises step: a) copper part is placed on product mold; B) preheating product mold temperature keep required production temperature; C) by injection machine by plastic cement injection in product mold; D) by injection machine, mould is carried out to pressurize; E) product demoulding after cooling.Wherein, improvements are: the production temperature of product mold is controlled at 105-115 DEG C; The injection pressure of injection machine is controlled: first paragraph 95-105Mpa, second segment 60-70Mpa, the 3rd section of 10-20Mpa simultaneously; And pressure maintaining period is controlled: first paragraph pressurize 20-30Mpa, 2 seconds dwell times, two sections of pressurize 15-25Mpa, 5 seconds dwell times; And the glue mode of entering of the glue-feeder to product mold improves: glue-feeder enter glue be from both sides along product toward intermediate flow.
Further, described injection machine through hot flow path and by plastic cement injection in product mold.Like this, the advantage of increase hot flow path is: can improve runner and walk glue difficulty, reduce injection pressure.
Further, the temperature of the material pipe of described injection machine is first paragraph 255-265 DEG C, second segment 240-250 DEG C, the 3rd section of 225-235 DEG C.Like this, expect that by raising pipe temperature ensures that molten plastic is smooth and easy, solved the difficulty of the stifled nozzle of melten gel.
A product mold that is suitable for the production method of the coated plastic cement of copper part described above, the glue inlet structure of described product mold is: glue-feeder is by being arranged at gum intaking passage and the product die cavity UNICOM of relative both sides of the product die cavity in product mold.
The present invention adopts scheme as above, can make to produce the plastic cement of product and the associativity of copper part and reach better degree, meets performance requirement.Adopt plastic cement and the copper part associativity of existing manufacturing process bad, product is tested: gas testing occurs Seepage in air pressure 0.2Mpa situation, plastic cement cracking in torsion 30N*M situation, torque resistant test failure.Adopt its plastic cement of product and the copper part associativity of manufacture of the present invention good, after tested can seepage in air pressure 0.45-0.8Mpa situation, torque resistant test has also obtained good improvement, and in torsion 61N*M situation, plastic cement can cracking.
Brief description of the drawings
Fig. 1 is the glue inlet structure improvement schematic diagram of product mold of the present invention.
Fig. 2 is the product structure schematic diagram that product mold of the present invention is produced.
Detailed description of the invention
Now the present invention is further described with detailed description of the invention by reference to the accompanying drawings.
Realize the production method that is coated plastic cement as being coated with more first-class copper parts of the fire hose of plastic layer as mentioned in background technology, comprise step: a) copper part is placed on product mold; B) preheating product mold temperature keep required production temperature; C) by injection machine by plastic cement injection in product mold; D) by injection machine, mould is carried out to pressurize; E) product demoulding after cooling.The detail of these steps is that those skilled in the art are known, no longer by all launch in detail in steps explanation.Only stress some emphasis improvement steps of technique different from the past below:
(1) the production temperature of product mold is controlled: the production temperature of product mold is controlled at 110 ± 5 DEG C.For improving the mechanical strength of this series products, in the plastic cement of injection moulding, be the melten gel that contains glass, in existing technique, the production temperature of product mold is generally that applicant finds in practice at 85 DEG C, at this temperature, out the floating fibre of product appearance is very heavy in injection mo(u)lding, and product adhesion is bad.Here, we promote mold temperature, rise to 110 DEG C by original 85 DEG C, and floating fine phenomenon improves, and product adhesion is also more stable, makes intensity can reach metal faucet torsion, moment of flexure testing standard, and Sealing Surface meets water shutoff requirement, and surface smoothness is good;
(2) the injection pressure of injection machine is controlled: first paragraph 100 ± 5Mpa, second segment 65 ± 5Mpa, the 3rd section of 15 ± 5Mpa.In existing technique, injection pressure first paragraph is 75Mpa, and second segment is 40Mpa, and the 3rd section is 10Mpa.Applicant finds in practice, and injection pressure product there will be starved like this, and surface is gloss not, because the pressure of first paragraph is only penetrated 1/3 of filled with product, second segment and the 3rd section of pressure are few, and glue cannot be noted progressive die chamber.And method correlation glue laminated power of the present invention improves, like this product starved, surface not gloss be just improved.Because first paragraph pressure is just penetrated 2/3 of filled with product, second segment and the 3rd section of pressure are supplied starved and not gloss defect of surface;
(3) pressure maintaining period is controlled: first paragraph pressurize 25 ± 5Mpa, 2 seconds dwell times, two sections of pressurize 20 ± 5Mpa, 5 seconds dwell times.Original first paragraph pressurize 55 ± 5Mpa in existing technique, 6 seconds dwell times, second segment pressurize 45 ± 5Mpa, 7 seconds dwell times.Applicant finds in practice, and pressure is crossed conference middle water hole is stopped up or compressive strain like this.Therefore, just overcome this problem by the process modification of above-mentioned pressure maintaining period;
(4) the glue mode of entering of the glue-feeder to product mold improves: glue-feeder enter glue be from both sides along product toward intermediate flow.The glue mode of entering in existing technique is to enter glue from centre.Applicant finds in practice, and institute's injection molding product size is unstable like this, and deformation of products is large.Consult shown in Fig. 1, applicant improves the glue inlet structure to product mold, and glue-feeder is by being arranged at the gum intaking passage 12 and product die cavity 11 UNICOMs of relative both sides of the product die cavity 11 in product mold 1.Like this, make to become by glue-feeder from both sides along product toward intermediate flow into the mode of glue, make its product gummosis smooth and easy, dimensional stability is good, is out of shape littlely, meets again product secondary and becomes shaping associativity.Consulting shown in Fig. 2 is the product 2 of producing by this product mold.
In addition, preferred, applicant also correlation adhesive process is further improved to enhance productivity and yield.Owing to having increased hot flow path, injection machine through hot flow path and by plastic cement injection in product mold.Like this, can improve runner and walk glue difficulty, injection pressure reduces.In existing technique, owing to there is no hot flow path, injection molding channel is long, walks comparatively difficulty of glue, and injection pressure is large, easily causes water hole to stop up.
And preferred, applicant is also increased to 260 ± 5 DEG C of first paragraphs by the temperature of the material pipe of described injection machine, 245 ± 5 DEG C of second segments, the 3rd section 230 ± 5 DEG C.Like this, expect that by raising pipe temperature ensures that molten plastic is smooth and easy, solved the difficulty of the stifled nozzle of melten gel.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (3)
1. the production method of the coated plastic cement of copper part, comprise step: a) copper part is placed on product mold, b) preheating product mold temperature keep required production temperature, c) by injection machine by plastic cement injection in product mold, d) by injection machine, mould is carried out to pressurize, e) product demoulding after cooling; It is characterized in that: the production temperature of product mold is controlled at 105-115 DEG C; The injection pressure of injection machine is controlled: first paragraph 95-105Mpa, second segment 60-70Mpa, the 3rd section of 10-20Mpa simultaneously; And pressure maintaining period is controlled: first paragraph pressurize 20-30Mpa, 2 seconds dwell times, two sections of pressurize 15-25Mpa, 5 seconds dwell times; And the glue mode of entering of the glue-feeder to product mold improves: glue-feeder enter glue be from both sides along product toward intermediate flow.
2. the production method of the coated plastic cement of copper part according to claim 1, is characterized in that: described injection machine through hot flow path and by plastic cement injection in product mold.
3. the production method of the coated plastic cement of copper part according to claim 1 and 2, is characterized in that: the temperature of the material pipe of described injection machine is first paragraph 255-265 DEG C second segment 240-250 DEG C, the 3rd section of 225-235 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210082728.4A CN102601920B (en) | 2012-03-27 | 2012-03-27 | Production method for covering plastic on copper part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210082728.4A CN102601920B (en) | 2012-03-27 | 2012-03-27 | Production method for covering plastic on copper part |
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| Publication Number | Publication Date |
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| CN102601920A CN102601920A (en) | 2012-07-25 |
| CN102601920B true CN102601920B (en) | 2014-07-16 |
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| CN201210082728.4A Expired - Fee Related CN102601920B (en) | 2012-03-27 | 2012-03-27 | Production method for covering plastic on copper part |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837391B (en) * | 2012-08-22 | 2015-04-22 | 马鞍山市鑫茂铁路器材有限公司 | Gluing process used for gluing of metal |
| CN104589587A (en) * | 2014-12-17 | 2015-05-06 | 杨磊 | Die and process for product surface smoothness treatment |
| CN105128286A (en) * | 2015-09-22 | 2015-12-09 | 洛阳市建园模具制造有限公司 | Operation method for mold for producing compaction sleeve |
Citations (2)
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| CN101134845A (en) * | 2006-08-29 | 2008-03-05 | 陈建林 | Nylon composition for automobile engine cover and injection molding process |
| CN202106510U (en) * | 2011-04-14 | 2012-01-11 | 福州蓝卡潞工业有限公司 | Sliding block glue feeding mechanism of mold |
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| EP1663607B1 (en) * | 2003-09-09 | 2013-06-12 | Mold-Masters (2007) Limited | Hot runner nozzle and manifold seal |
| DE102004053130A1 (en) * | 2004-10-29 | 2006-05-04 | Faurecia Innenraum Systeme Gmbh | Metal and plastic hybrid component for wide range of uses comprises thin metal layer with opening whose collar is inserted through opening in thin metal layer below and injected plastic deforms collar to lock in position |
| US7396227B2 (en) * | 2005-02-23 | 2008-07-08 | Toyota Jidosha Kabushiki Kaisha | Hot runner sprue |
| EP2271471A4 (en) * | 2008-04-15 | 2011-11-30 | Keter Plastic Ltd | System for high pressure injection overmolding |
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2012
- 2012-03-27 CN CN201210082728.4A patent/CN102601920B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134845A (en) * | 2006-08-29 | 2008-03-05 | 陈建林 | Nylon composition for automobile engine cover and injection molding process |
| CN202106510U (en) * | 2011-04-14 | 2012-01-11 | 福州蓝卡潞工业有限公司 | Sliding block glue feeding mechanism of mold |
Non-Patent Citations (5)
| Title |
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| 塑料注塑成型浇口位置优化;申长雨等;《化工学报》;20040331;第55卷(第3期);445-451 * |
| 李凯岭等.注塑成型工艺与设备.《现代注塑模具设计制造技术》.清华大学出版社,2011,68-76. * |
| 注塑成型工艺参数对制品体收缩率变化的影响及工艺参数优化;王利霞等;《高分子材料科学与工程》;20040331;第20卷(第2期);173-178 * |
| 王利霞等.注塑成型工艺参数对制品体收缩率变化的影响及工艺参数优化.《高分子材料科学与工程》.2004,第20卷(第2期),173-178. |
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Inventor after: Dai Jianliang Inventor after: Zhang Zhewei Inventor before: Dai Jianliang |
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Free format text: CORRECT: INVENTOR; FROM: DAI JIANLIANG TO: DAI JIANLIANG ZHANG ZHEWEI |
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Granted publication date: 20140716 Termination date: 20200327 |