CN102285068B - Injection mold for co-injection of polyurethane (PU) film - Google Patents
Injection mold for co-injection of polyurethane (PU) film Download PDFInfo
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- CN102285068B CN102285068B CN 201110153986 CN201110153986A CN102285068B CN 102285068 B CN102285068 B CN 102285068B CN 201110153986 CN201110153986 CN 201110153986 CN 201110153986 A CN201110153986 A CN 201110153986A CN 102285068 B CN102285068 B CN 102285068B
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Abstract
The invention discloses an injection mold for co-injection of a polyurethane (PU) film. The injection mold comprises a stationary mold (1) and a movable mold (2). A film forming cavity is formed in the stationary mold, an insert cavity is formed in the movable mold, an injection product serving as an insert is put into the injection mold, and the outer surface of the injection product is compounded with a polyurethane (PU) beautifying film by an injection film forming method; and the technical scheme overcomes defects of low efficiency, high working strength, environmental pollution, harm to personal health, low consistency of product quality in the prior art. By the injection mold for co-injection of the PU film, the outer surface of the injection product is compounded with the PU film by the injection film forming method, so that the aims of improving efficiency, reducing working strength, not polluting the environment, not harming health and ensuring consistency of product quality are fulfilled.
Description
Technical field
The present invention relates to a kind of injection mold, specifically refer to be intended to improve the product surface feel for the outer surface composite injection molding one deck at injection-molded item, beautify a kind of injection mold for composite injection molding PU rete of the polyurethane PU rete of product surface effect purposes.
Background technology
In order to improve injection-molded item surface feel, beautify the product surface effect, need to be at the compound one deck polyurethane PU of the outer surface of injection-molded item layer, such as instrument board, the inner decoration strip of high-grade automobile, the injection-molded items such as plastic casing of high-grade mobile phone, panel computer; Prior art follows the embrane method that is sprayed into of PU leather, and the outer surface spraying one deck polyurethane PU coating at injection-molded item behind the coating dry solidification, carries out polishing to coating, the final rete that beautifies at the compound one deck polyurethane PU of the outer surface of injection-molded item again;
Be different from automatic coating, oven dry, polish, batch the PU leather and fur products of scale manufacturing specification, injection-molded item is different because of shape and structure, can only rely on manually one by one operation at the outer surface spraying polyurethane PU of injection-molded item layer, need to rely on the high skilled worker of level of skill, otherwise can cause product property bad because of the coating gage distortion, in addition, the efficient that is sprayed into embrane method be low, working strength is large, the volatilization contaminated environment of solvent, the harm enterprise employee health; Therefore, prior art exists that efficient is low, working strength is large, contaminated environment, harm enterprise employee health, the bad problems and shortcomings of product property uniformity.
Summary of the invention
Problems and shortcomings for above-mentioned prior art existence, the present invention takes to be arranged to the membranous type chamber in cover half, the inserts die cavity is set in dynamic model, injection-molded item is placed injection mold as inserts, with the method for the injection moulding film forming technical scheme of beautifying rete at the compound one deck polyurethane PU of the outer surface of injection-molded item, a kind of injection mold for composite injection molding PU rete is provided, be intended to make by being injection molded into embrane method the production of the outer surface composite polyurethane PU rete of injection-molded item, reach and raise the efficiency, alleviate working strength, non-environmental-pollution, without health hazard, guarantee the conforming purpose of product property.
The object of the present invention is achieved like this: a kind of injection mold for composite injection molding PU layer, comprise cover half, dynamic model, wherein: the recessed film forming die cavity that the outer surface shape face that is provided with shape and injection-molded item below the described cover half has superposeed and matched after the PU thicknesses of layers size, in the edge of closing on described film forming die cavity, be provided with the flash groove of the groove formation of a circle sealing along the edge of film forming die cavity, between the edge of film forming die cavity and flash groove, also be provided with the flanging flange that the convex tendon of a circle sealing consists of, the degree of depth of described flash groove equates that with the gauge of PU rete the height of described flanging flange equates with the gauge of PU rete;
The cast gate of cover half is arranged on the edge of film forming die cavity one end, and is positioned within the closed loop that flash groove consists of and does not communicate with flash groove; The other end at the film-forming type cavity edge relative with gate location, be positioned at the position that does not communicate with flash groove within the closed loop of flash groove formation, also be provided with exhaust passage upwards in the film forming die cavity, the upper end of exhaust passage is provided with the plug that is subjected to exhaust cylinder control, and exhaust cylinder is arranged on the resettlement groove that is arranged in above the cover half;
The film forming die cavity that is provided with position and cover half above the described dynamic model is corresponding, shape is coincide with the inner surface shape face of injection-molded item, the degree of depth equates with the corresponding thickness of injection-molded item, recessed inserts die cavity; Being provided with some thimbles for demoulding purposes in the dynamic model communicates with the bottom surface of described inserts die cavity.
Operation principle
Be horizontal installation during mold work, the fore-and-aft direction of job description is the above-below direction that said structure is described.
During application, embed injection-molded item in the inserts die cavity of dynamic model as inserts, dynamic model carries injection-molded item and moves forward matched moulds, behind the mould matched moulds, the edge that the flanging flange of cover half is pushed down injection-molded item with the injection-molded item compacting in the inserts die cavity of dynamic model, form between the film forming die cavity of cover half and the outer surface of injection-molded item and take the chamber of polyurethane PU film forming in, starting exhaust cylinder affects plug to open the exhaust passage, injection machine injects the polyurethane PU fluid of melting between the outer surface of the film forming die cavity of cover half and injection-molded item, air in the film forming die cavity discharges by the exhaust passage, start exhaust cylinder and promote the plug closes vent passage, the pressurize cooling, on the outer surface of injection-molded item, just be compounded with one deck polyurethane PU rete after the cooling, die sinking ejects the goods of the multiple film of injection moulding, again through removing PU cold burden head, the post processing of surface finish, acquisition is compounded with the plastic product of injection moulding PU rete.The injection moulding film forming makes the production of the outer surface composite polyurethane PU rete of injection-molded item avoid the bad drawback of solvent contamination, quality consistency of spraying film forming.
Above-mentioned, the present invention takes to be arranged to the membranous type chamber in cover half, the inserts die cavity is set in dynamic model, injection-molded item is placed injection mold as inserts, with the method for the injection moulding film forming technical scheme of beautifying rete at the compound one deck polyurethane PU of the outer surface of injection-molded item, having overcome prior art exists efficient low, working strength is large, contaminated environment, the harm enterprise employee health, the problems and shortcomings that the product property uniformity is bad, a kind of injection mold for composite injection molding PU rete that provides makes the production of the outer surface composite polyurethane PU rete of injection-molded item reach and raises the efficiency by being injection molded into embrane method, alleviate working strength, non-environmental-pollution, without health hazard, guarantee the conforming purpose of product property.
Description of drawings
Fig. 1 is the cross-sectional schematic of the structure of a kind of injection mold for composite injection molding PU rete of the present invention;
Fig. 2 be among Fig. 1 A section draw enlarged drawing;
Fig. 3 is the side view cutaway drawing of Fig. 1;
Fig. 4 uses a kind of injection mold for composite injection molding PU rete of the present invention, is injection molded into the schematic diagram of membrane product.
Below in conjunction with the embodiment in the accompanying drawing the present invention is described in further detail, but should not be construed as any limitation of the invention.
Among the figure: cover half 1, flash groove 11, flanging flange 12, cast gate 13, exhaust cylinder 14, exhaust passage 15, plug 16, dynamic model 2, thimble 21, injection-molded item 01, PU rete 02, PU cold burden head 03.
The specific embodiment
Consult Fig. 1～Fig. 4, a kind of injection mold for composite injection molding PU layer of the present invention, comprise cover half 1, dynamic model 2, wherein: the recessed film forming die cavity that the outer surface shape face that is provided with shape and injection-molded item 01 below the described cover half 1 has superposeed and matched behind PU rete 02 gauge, in the edge of closing on described film forming die cavity, be provided with the flash groove 11 of the groove formation of a circle sealing along the edge of film forming die cavity, between the edge of film forming die cavity and flash groove 11, also be provided with the flanging flange 12 that the convex tendon of a circle sealing consists of, the degree of depth of described flash groove 11 equates that with the gauge of PU rete 02 height of described flanging flange 12 equates with the gauge of PU rete 02;
The cast gate 13 of cover half 1 is arranged on the edge of film forming die cavity one end, and is positioned within the closed loop that flash groove 11 consists of and does not communicate with flash groove 11; The other end at the film-forming type cavity edge relative with cast gate 13 positions, be positioned at the position that does not communicate with flash groove 11 within the closed loop of flash groove 11 formations, also be provided with exhaust passage 15 upwards in the film forming die cavity, the upper end of exhaust passage 15 is provided with the plug 16 that is subjected to exhaust cylinder 14 controls, and exhaust cylinder 14 is arranged on the resettlement groove that is arranged in above the cover half 1;
The film forming die cavity that is provided with position and cover half 1 above the described dynamic model 2 is corresponding, shape is coincide with the inner surface shape face of injection-molded item 01, the degree of depth equates with the corresponding thickness of injection-molded item 01, recessed inserts die cavity; Being provided with some thimbles 21 for demoulding purposes in the dynamic model 2 communicates with the bottom surface of described inserts die cavity.
Operation principle
Be horizontal installation during mold work, the fore-and-aft direction of job description is the above-below direction that said structure is described.
During application, embed injection-molded item 01 in the inserts die cavity of dynamic model 2 as inserts, dynamic model 2 carries injection-molded item 01 and moves forward matched moulds, behind the mould matched moulds, the edge that the flanging flange 12 of cover half 1 is pushed down injection-molded item 01 with injection-molded item 01 compacting in the inserts die cavity of dynamic model 2, form between the film forming die cavity of cover half 1 and the outer surface of injection-molded item 01 and take the chamber of polyurethane PU film forming in, starting exhaust cylinder 14 affects plug 16 to open exhaust passage 15, injection machine injects the polyurethane PU fluid of melting between the outer surface of the film forming die cavity of cover half 1 and injection-molded item 01, air in the film forming die cavity discharges by exhaust passage 15, start exhaust cylinder 14 and promote plug 16 closes vent passage 15, the pressurize cooling, on the outer surface of injection-molded item 01, just be compounded with one deck polyurethane PU rete after the cooling, die sinking ejects the goods of the multiple film of injection moulding, again through removing PU cold burden head 03, the post processing of surface finish, acquisition is compounded with the plastic product of injection moulding PU rete.The injection moulding film forming makes the production of the outer surface composite polyurethane PU rete of injection-molded item avoid the bad drawback of solvent contamination, quality consistency of spraying film forming.
Claims (1)
1. injection mold that is used for composite injection molding PU layer, comprise cover half (1), dynamic model (2), it is characterized in that: the recessed film forming die cavity that the outer surface shape face that is provided with shape and injection-molded item (01) below the described cover half (1) has superposeed and matched behind PU rete (02) gauge, in the edge of closing on described film forming die cavity, be provided with the flash groove (11) of the groove formation of a circle sealing along the edge of film forming die cavity, between the edge of film forming die cavity and flash groove (11), also be provided with the flanging flange (12) that the convex tendon of a circle sealing consists of, the degree of depth of described flash groove (11) equates that with the gauge of PU rete (02) height of described flanging flange (12) equates with the gauge of PU rete (02);
The cast gate (13) of cover half (1) is arranged on the edge of film forming die cavity one end, and is positioned within the closed loop that flash groove (11) consists of and does not communicate with flash groove (11); The other end at the film-forming type cavity edge relative with cast gate (13) position, be positioned at the position that does not communicate with flash groove (11) within the closed loop of flash groove (11) formation, also be provided with exhaust passage (15) upwards in the film forming die cavity, the upper end of exhaust passage (15) is provided with the plug (16) that is subjected to exhaust cylinder (14) control, and exhaust cylinder (14) is arranged on the resettlement groove that is arranged in above the cover half (1);
The film forming die cavity that is provided with position and cover half (1) above the described dynamic model (2) is corresponding, shape is coincide with the inner surface shape face of injection-molded item (01), the degree of depth equates with the corresponding thickness of injection-molded item (01), recessed inserts die cavity; Being provided with some thimbles for demoulding purposes (21) in the dynamic model (2) communicates with the bottom surface of described inserts die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110153986 CN102285068B (en) | 2011-05-26 | 2011-05-26 | Injection mold for co-injection of polyurethane (PU) film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110153986 CN102285068B (en) | 2011-05-26 | 2011-05-26 | Injection mold for co-injection of polyurethane (PU) film |
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| Publication Number | Publication Date |
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| CN102285068A CN102285068A (en) | 2011-12-21 |
| CN102285068B true CN102285068B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110153986 Active CN102285068B (en) | 2011-05-26 | 2011-05-26 | Injection mold for co-injection of polyurethane (PU) film |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568306A (en) * | 2012-07-24 | 2014-02-12 | 郭敬慧 | Forming mold for TPU membrane and method of preparing the TPU membrane by utilization of the mold |
| CN103737810A (en) * | 2013-12-27 | 2014-04-23 | 中山市利群精密实业有限公司 | Plastic mold dissolving wire structure |
Citations (6)
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| CN101181822A (en) * | 2006-11-14 | 2008-05-21 | 友嘉兴业股份有限公司 | Preparation method of PU putamina having various textures and color diversification |
| CN101537688A (en) * | 2009-04-20 | 2009-09-23 | 东莞兴泰鞋材有限公司 | Shoe material processing method |
| CN101885252A (en) * | 2009-05-15 | 2010-11-17 | 三星电子株式会社 | Be used to the insertion injection moulding method that inserts injection molding film and use this film |
| CN201694137U (en) * | 2010-05-05 | 2011-01-05 | 洪伟添 | Buffer anti-collision automobile front bumper |
| CN201758494U (en) * | 2010-04-06 | 2011-03-09 | 铂邑科技股份有限公司 | Plastic thin-shell element with decorative film coated thereon |
| CN202079732U (en) * | 2011-05-26 | 2011-12-21 | 宁波瑞元模塑有限公司 | Injection mold for composite injection molding of PU (polyurethane) film layer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2033759A1 (en) * | 2007-09-07 | 2009-03-11 | Peguform Gmbh | Method for manufacturing a moulded part with different decorative areas |
| DE102009021413B4 (en) * | 2009-05-14 | 2011-03-31 | Peguform Gmbh | Apparatus and method for producing a decorative surface having a component |
-
2011
- 2011-05-26 CN CN 201110153986 patent/CN102285068B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101181822A (en) * | 2006-11-14 | 2008-05-21 | 友嘉兴业股份有限公司 | Preparation method of PU putamina having various textures and color diversification |
| CN101537688A (en) * | 2009-04-20 | 2009-09-23 | 东莞兴泰鞋材有限公司 | Shoe material processing method |
| CN101885252A (en) * | 2009-05-15 | 2010-11-17 | 三星电子株式会社 | Be used to the insertion injection moulding method that inserts injection molding film and use this film |
| CN201758494U (en) * | 2010-04-06 | 2011-03-09 | 铂邑科技股份有限公司 | Plastic thin-shell element with decorative film coated thereon |
| CN201694137U (en) * | 2010-05-05 | 2011-01-05 | 洪伟添 | Buffer anti-collision automobile front bumper |
| CN202079732U (en) * | 2011-05-26 | 2011-12-21 | 宁波瑞元模塑有限公司 | Injection mold for composite injection molding of PU (polyurethane) film layer |
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| CN102285068A (en) | 2011-12-21 |
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Denomination of invention: An injection mold for composite injection of PU film Effective date of registration: 20220623 Granted publication date: 20131023 Pledgee: China Construction Bank Corporation Ninghai sub branch Pledgor: NINGBO RUIYUAN MOULD & PLASTICS Co.,Ltd. Registration number: Y2022330001081 |
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