CN102179898A - Double-material die of small plastic parts and forming method of die - Google Patents

Double-material die of small plastic parts and forming method of die Download PDF

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Publication number
CN102179898A
CN102179898A CN201110052172XA CN201110052172A CN102179898A CN 102179898 A CN102179898 A CN 102179898A CN 201110052172X A CN201110052172X A CN 201110052172XA CN 201110052172 A CN201110052172 A CN 201110052172A CN 102179898 A CN102179898 A CN 102179898A
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China
Prior art keywords
die
fixed
cover half
die cavity
thimble
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CN201110052172XA
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Chinese (zh)
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CN102179898B (en
Inventor
景伟德
潘兴兴
陈勇
杨浩
黄俊戎
孙丽云
万岳飞
周明星
范能
王冬华
贺常文
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Yuyao Qinyuan Outdoor Products Co ltd
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CIXI SHENGYI MOLD CO LTD
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Priority to CN 201110052172 priority Critical patent/CN102179898B/en
Publication of CN102179898A publication Critical patent/CN102179898A/en
Application granted granted Critical
Publication of CN102179898B publication Critical patent/CN102179898B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a double-material die of small plastic parts and a forming method of the die. The double-material die comprises a panel, a fixed template, a movable template, a support plate, a bottom plate, a first fixed die, a second fixed die, a movable die, a first charging barrel, a second charging barrel, a first insert, a second insert, a first die cavity, a second die cavity, a semi-finished product, a pull rod, a limit rod, a runner, a heating ring, a heat insulation plate, a cooling system, a first guide post, a first guide sleeve, a second guide post, a second guide sleeve, a screw, a positioning column, a positioning sleeve and the like. The double-material die is suitable for producing the double-material small plastic parts. After a material is ejected into the first die cavity from a first nozzle and then formed, the die is opened, and the formed material is not ejected; the die is closed after rotating for 180 degrees; and the other material is ejected into the second die cavity through the second nozzle and then cooled, the die is opened for the second time, and the product is ejected. By the adopting the double-material die disclosed by the invention, the inaccurate die closing problem is solved by using the die, the service life of the die is prolonged, the probability of generating wastes is reduced at the same time, and the production cost is reduced.

Description

The extra quality mould and the forming method thereof of small plastic spare
Technical field
The present invention relates to a kind of extra quality mould and forming method thereof of small plastic spare, be primarily aimed at small plastic spare double-colored or extra quality requirement.
Background technology
Extra quality mould is meant the injection moulding on same injection machine of two kinds of plastic materials, moulding at twice, but product depanning mould once.General this moulding technology also is double-shot moulding, is finished by a mold usually, and needs special double coloured plastic injection machine.At present, the general two big classes of dividing of extra quality injection mold on the domestic market, one class is the extra quality injection mold of colour mixture, two nozzles that are injection machine are alternately injected same die cavity with materials of different colors, formation does not have the pattern goods on obvious border, another kind of is exactly double-deck extra quality injection mold, and promptly two kinds of two nozzles successively penetrate two kinds of materials the double-colored goods that obvious border is arranged that constitute goods.Extra quality mould is in vogue on the market, and because this technology can make the outward appearance of product more beautiful, and be easy to change color and can spray, will be trend of the market certainly.
The present invention is primarily aimed at double-deck extra quality mass-tone mould, and at present also there is certain problem in existing extra quality mould: 1) dynamic model behind Rotate 180 °, accurate matched moulds; 2) thimble can't reset after ejecting plastic product fully, causes injection defect behind the matched moulds; 3) extra quality die cost is higher; 4) present extra quality mould mainly adopts cold runner, and the waste material that produces in injection moulding process thus is many, causes cost to rise.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of extra quality mould and forming method thereof of small plastic spare is provided.
The extra quality mould of small plastic spare comprises panel, solid plate, moving platen, gripper shoe, base plate, first cover half, second cover half, dynamic model, first barrel, second barrel, first inserts, second inserts, first die cavity, second die cavity, semi-finished product, sprue puller, gag lever post, runner, heating collar and thermal insulation board, cooling system, first guide pillar and first guide pin bushing, second guide pillar and second guide pin bushing, screw, reference column and positioning sleeve, thimble, ejector retainner plate and thimble fixed head, release link and back-moving spring; The upper end of first barrel and second barrel is fixed on the panel, first cover half is stretched in the lower end of first barrel and second barrel, link to each other with running channel in second cover half, panel and solid plate are fixed, moving platen and gripper shoe are fixed, gripper shoe and base plate are fixed, thimble fixed head and ejector retainner plate are fixed, gag lever post one end is fixed on the base plate, the gag lever post other end and ejector retainner plate touch, first cover half and dynamic model are fixed in solid plate and the moving platen, second cover half and dynamic model are fixed in solid plate and the moving platen, first end of inserting and first cover half are fixed, first other end of inserting and dynamic model are fixed, second end of inserting and second cover half are fixed, second other end of inserting and dynamic model are fixed, first is provided with first die cavity in inserting, second is provided with second die cavity in inserting, first cover half, second cover half, dynamic model, solid plate links to each other with cooling system respectively with moving platen, be wound with heating collar around the discharging opening of first barrel, thermal insulation board is fixed on the solid plate around heating collar, the upper end of sprue puller links to each other with running channel, the lower end of sprue puller is fixed between thimble fixed head and ejector retainner plate, the upper end of two thimbles respectively with first die cavity, second die cavity links to each other, the lower end of thimble is fixed between thimble fixed head and ejector retainner plate, first guide pin bushing is fixed in the solid plate, first guide pillar, one end is placed in first guide pin bushing, the other end of first guide pillar is fixed between moving platen and gripper shoe, second guide pin bushing is fixed in thimble fixed head and the ejector retainner plate, second guide pillar passes second guide pin bushing and second guide pillar upper end extend in the moving platen, the second guide pillar lower end is fixed on the base plate, reference column is fixedlyed connected with solid plate by screw, positioning sleeve is fixedlyed connected with moving platen by screw, the upper end of release link is touched mutually with solid plate, the lower end of release link is fixed between thimble fixed head and ejector retainner plate, back-moving spring is around on the release link and solid plate is withstood in the back-moving spring upper end, and the thimble fixed head is withstood in the back-moving spring lower end.
The forming method step of the double-color mold of small plastic spare is as follows:
1) under the matched moulds state, spray plastic liquid to first barrel, plastic liquid flows to first die cavity by the heating collar heating and along runner, cools off by cooling system to obtain the working of plastics semi-finished product;
2) die sinking, sprue puller pulls out plastics unnecessary in the runner, then dynamic model Rotate 180 °;
3) matched moulds, reference column insert in the positioning sleeve, realize accurate matched moulds, semi-finished product enter second cover half and with its formation second die cavity;
4) spray another kind of plastic liquid to second barrel, plastic liquid flows to second die cavity along runner, cools off by cooling system to obtain the working of plastics finished product;
5) die sinking, sprue puller pulls out plastics unnecessary in the runner, then dynamic model Rotate 180 °;
6) pushing-off product process, ejector retainner plate drive thimble moves upward and ejects the working of plastics finished product, and back-moving spring is compressed, and the pushing-off product back center resets under the effect of back-moving spring;
7) matched moulds, reference column inserts in the positioning sleeve, realizes accurate matched moulds, and the while solid plate touches release link resets ejector retainner plate fully, thereby thimble is resetted fully;
8) repeat above process and finish next working of plastics finished product.
Use the present invention, thereby adopt accurate positioning device to detect the inaccurate problem of matched moulds that precisely solves of matched moulds; The utilization resetting means is guaranteed the complete return of thimble, reduces consequent product defects; This mold cavity adopts the connecting method of inserting, and has reduced simultaneously because of the die cavity defective causes the risk of changing most of mould the service life of having improved mould, has reduced processing cost; In first time process of injection molding, this mould adopts the hot flow path mode, has reduced the probability that waste material produces, and has reduced production cost.
Description of drawings
Fig. 1 is the vertical view of the extra quality mould of small plastic spare;
Fig. 2 partly cuts open figure for the facing of extra quality mould of small plastic spare;
Fig. 3 looks for the left side of the extra quality mould of small plastic spare and partly cuts open figure;
Fig. 4 is the first molding structure cutaway view of the present invention;
Fig. 5 is the second molding structure cutaway view of the present invention;
Among the figure, panel 1, solid plate 2, moving platen 3, gripper shoe 4, base plate 6, first cover half 81, second cover half 82, dynamic model 7, first barrel 100, second barrel 101, first inserts 110, second inserts 111, first die cavity 120, second die cavity 121, semi-finished product 123, sprue puller 5, gag lever post 16, runner 19, heating collar 140 and thermal insulation board 141, cooling system 13, first guide pillar 92 and first guide pin bushing 91, second guide pillar 160 and second guide pin bushing 161, screw 182, reference column 181 and positioning sleeve 180, thimble 172, ejector retainner plate 171 and thimble fixed head 170, release link 150 and back-moving spring 151.
The specific embodiment
Shown in Fig. 1~5, the extra quality mould of small plastic spare comprises panel 1, solid plate 2, moving platen 3, gripper shoe 4, base plate 6, first cover half 81, second cover half 82, dynamic model 7, first barrel 100, second barrel 101, first inserts 110, second inserts 111, first die cavity 120, second die cavity 121, semi-finished product 123, sprue puller 5, gag lever post 16, runner 19, heating collar 140 and thermal insulation board 141, cooling system 13, first guide pillar 92 and first guide pin bushing 91, second guide pillar 160 and second guide pin bushing 161, screw 182, reference column 181 and positioning sleeve 180, thimble 172, ejector retainner plate 171 and thimble fixed head 170, release link 150 and back-moving spring 151; The upper end of first barrel 100 and second barrel 101 is fixed on the panel 1, first cover half 81 is stretched in the lower end of first barrel 100 and second barrel 101, link to each other with running channel 19 in second cover half 82, panel 1 is fixing with solid plate 2, moving platen 3 is fixing with gripper shoe 4, gripper shoe 4 is fixing with base plate 6, thimble fixed head 170 is fixing with ejector retainner plate 171, gag lever post 5 one ends are fixed on the base plate 6, gag lever post 5 other ends and ejector retainner plate 171 touch, first cover half 81 is fixed in solid plate 2 and the moving platen 3 with dynamic model 7, second cover half 82 is fixed in solid plate 2 and the moving platen 3 with dynamic model 7, first an insert end of 110 and first cover half 81 is fixing, first insert 110 the other end and the dynamic model 7 is fixing, second an insert end of 111 and second cover half 82 is fixing, second insert 111 the other end and the dynamic model 7 is fixing, first inserts is provided with first die cavity 120 in 110, second inserts is provided with second die cavity 121 in 111, first cover half 81, second cover half 82, dynamic model 7, solid plate 2 links to each other with cooling system 13 respectively with moving platen 3, be wound with heating collar 140 around the discharging opening of first barrel 100, thermal insulation board 141 is fixed on the solid plate 2 around heating collar 140, the upper end of sprue puller 5 links to each other with running channel 19,171 of thimble fixed head 170 and ejector retainner plates are fixed in the lower end of sprue puller 5, the upper end of two thimbles 172 respectively with first die cavity 120, second die cavity 121 links to each other, 171 of thimble fixed head 170 and ejector retainner plates are fixed in the lower end of thimble 172, first guide pin bushing 91 is fixed in the solid plate 2, first guide pillar, 92 1 ends are placed in first guide pin bushing 91, the other end of first guide pillar 92 is fixed in 4 of moving platen 3 and gripper shoes, second guide pin bushing 161 is fixed in thimble fixed head 170 and the ejector retainner plate 171, second guide pillar 160 passes second guide pin bushing 161 and second guide pillar, 160 upper ends extend in the moving platen 3, second guide pillar, 160 lower ends are fixed on the base plate 6, reference column 181 is fixedlyed connected with solid plate 2 by screw 182, positioning sleeve 180 is fixedlyed connected with moving platen 3 by screw 182, the upper end of release link 150 is touched mutually with solid plate 2,171 of thimble fixed head 170 and ejector retainner plates are fixed in the lower end of release link 150, back-moving spring 151 is around on the release link 150 and solid plate 2 is withstood in back-moving spring 151 upper ends, and thimble fixed head 170 is withstood in back-moving spring 151 lower ends.
The forming method of the double-color mold of small plastic spare, its step is as follows:
1) under the matched moulds state, spray plastic liquid to first barrel 100, plastic liquid flows to first die cavity 120 by heating collar 140 heating and along runner 19, cools off by cooling system 13 to obtain working of plastics semi-finished product 123;
2) die sinking, sprue puller 5 pulls out unnecessary plastics in the runner 19, then dynamic model 7 Rotate 180 degree;
3) matched moulds, reference column 181 inserts in the positioning sleeves 180, realizes accurate matched moulds, semi-finished product 123 enter second cover half 82 and with its formation second die cavity 121;
4) spray another kind of plastic liquid to second barrel 101, plastic liquid flows to second die cavity 121 along runner 19, cools off by cooling system 13 to obtain the working of plastics finished product;
5) die sinking, sprue puller 5 pulls out unnecessary plastics in the runner 19, then dynamic model 7 Rotate 180 degree;
6) pushing-off product process, ejector retainner plate 171 drive thimbles 172 move upward and eject the working of plastics finished product, and back-moving spring 151 is compressed, and pushing-off product back center 172 resets under the effect of back-moving spring 151;
7) matched moulds, reference column 181 inserts in the positioning sleeve 180, realizes accurate matched moulds, and while solid plate 2 touches release link 150 resets ejector retainner plate 171 fully, thereby thimble 172 is resetted fully;
8) repeat above process and finish next working of plastics finished product.

Claims (2)

1. the extra quality mould of a small plastic spare is characterized in that comprising panel (1), solid plate (2), moving platen (3), gripper shoe (4), base plate (6), first cover half (81), second cover half (82), dynamic model (7), first barrel (100), second barrel (101), first insert (110), second insert (111), first die cavity (120), second die cavity (121), semi-finished product (123), sprue puller (5), gag lever post (16), runner (19), heating collar (140) and thermal insulation board (141), cooling system (13), first guide pillar (92) and first guide pin bushing (91), second guide pillar (160) and second guide pin bushing (161), screw (182), reference column (181) and positioning sleeve (180), thimble (172), ejector retainner plate (171) and thimble fixed head (170), release link (150) and back-moving spring (151); First barrel (100) is fixed on the panel (1) with the upper end of second barrel (101), first barrel (100) stretches into first cover half (81) with the lower end of second barrel (101), link to each other with running channel (19) in second cover half (82), panel (1) is fixing with solid plate (2), moving platen (3) is fixing with gripper shoe (4), gripper shoe (4) is fixing with base plate (6), thimble fixed head (170) is fixing with ejector retainner plate (171), gag lever post (5) one ends are fixed on the base plate (6), gag lever post (5) other end and ejector retainner plate (171) touch, first cover half (81) is fixed in solid plate (2) and the moving platen (3) with dynamic model (7), second cover half (82) is fixed in solid plate (2) and the moving platen (3) with dynamic model (7), first end and first cover half (81) of inserting (110) fixed, first other end and the dynamic model (7) of inserting (110) fixed, second end and second cover half (82) of inserting (111) fixed, second other end and the dynamic model (7) of inserting (111) fixed, first inserts is provided with first die cavity (120) in (110), second inserts is provided with second die cavity (121) in (111), first cover half (81), second cover half (82), dynamic model (7), solid plate (2) links to each other with cooling system (13) respectively with moving platen (3), be wound with heating collar (140) around the discharging opening of first barrel (100), thermal insulation board (141) is fixed on the solid plate (2) around heating collar (140), the upper end of sprue puller (5) links to each other with running channel (19), the lower end of sprue puller (5) is fixed between thimble fixed head (170) and ejector retainner plate (171), the upper end of two thimbles (172) respectively with first die cavity (120), second die cavity (121) links to each other, the lower end of thimble (172) is fixed between thimble fixed head (170) and ejector retainner plate (171), first guide pin bushing (91) is fixed in the solid plate (2), first guide pillar (92) one ends are placed in first guide pin bushing (91), the other end of first guide pillar (92) is fixed between moving platen (3) and gripper shoe (4), second guide pin bushing (161) is fixed in thimble fixed head (170) and the ejector retainner plate (171), second guide pillar (160) passes second guide pin bushing (161) and second guide pillar (160) upper end extend in the moving platen (3), second guide pillar (160) lower end is fixed on the base plate (6), reference column (181) is fixedlyed connected with solid plate (2) by screw (182), positioning sleeve (180) is fixedlyed connected with moving platen (3) by screw (182), the upper end of release link (150) is touched mutually with solid plate (2), the lower end of release link (150) is fixed between thimble fixed head (170) and ejector retainner plate (171), the release link (150) that is around in back-moving spring (151) goes up and solid plate (2) is withstood in back-moving spring (151) upper end, and thimble fixed head (170) is withstood in back-moving spring (151) lower end.
2. forming method of the double-color mold of small plastic spare according to claim 1 is characterized in that its step is as follows:
1) under the matched moulds state, spray plastic liquid to first barrel (100), plastic liquid flows to first die cavity (120) by heating collar (140) heating and along runner (19), cools off by cooling system (13) to obtain working of plastics semi-finished product (123);
2) die sinking, sprue puller (5) pulls out unnecessary plastics in the runner (19), then dynamic model (7) Rotate 180 °;
3) matched moulds, reference column (181) insert in the positioning sleeve (180), realize accurate matched moulds, semi-finished product (123) enter second cover half (82) and with its formation second die cavity (121);
4) spray another kind of plastic liquid to second barrel (101), plastic liquid flows to second die cavity (121) along runner (19), cools off by cooling system (13) to obtain the working of plastics finished product;
5) die sinking, sprue puller (5) pulls out unnecessary plastics in the runner (19), then dynamic model (7) Rotate 180 °;
6) pushing-off product process, ejector retainner plate (171) drive thimble (172) moves upward and ejects the working of plastics finished product, and back-moving spring (151) is compressed, and pushing-off product back center (172) resets under the effect of back-moving spring (151);
7) matched moulds, reference column (181) inserts in the positioning sleeve (180), realizes accurate matched moulds, and while solid plate (2) touches release link (150) resets ejector retainner plate (171) fully, thereby thimble (172) is resetted fully;
8) repeat above process and finish next working of plastics finished product.
CN 201110052172 2011-03-04 2011-03-04 Double-material die of small plastic parts and forming method of die Expired - Fee Related CN102179898B (en)

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CN102179898B CN102179898B (en) 2013-01-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744837A (en) * 2012-07-27 2012-10-24 慈溪市盛艺模具有限公司 Injection mould for preparing screwing cover and using method thereof
CN104260285A (en) * 2014-09-25 2015-01-07 昆山伯建精密模具有限公司 Cold-runner mold
CN105773919A (en) * 2016-04-23 2016-07-20 东莞市盛涵精密塑胶制品有限公司 Inverse die structure with feed inlet and thimble on same side

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104227959A (en) * 2013-06-18 2014-12-24 苏州汉扬精密电子有限公司 Secondary ejection mechanism of double-injection mold
CN106273272A (en) * 2016-09-28 2017-01-04 福州大学 Core two-step exchanges double-shot moulding mould and forming method

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Publication number Priority date Publication date Assignee Title
JPH04310714A (en) * 1991-04-10 1992-11-02 Sekisui Chem Co Ltd Multi-layer molded product
CN1158293A (en) * 1996-11-20 1997-09-03 陕西秦岭航空电气公司 Injection shaping tech. and process method of balance shaft gear
EP1860374A1 (en) * 2005-03-16 2007-11-28 Mitsubishi Engineering-Plastics Corporation Light guiding plate formed of transparent resin, planar light source, and light guiding plate manufacturing method
CN101229581A (en) * 2008-01-25 2008-07-30 华中科技大学 Casting method and mould for car air conditioning compressor slanting plate
CN201960698U (en) * 2011-03-04 2011-09-07 慈溪市盛艺模具有限公司 Dual-material mould for miniature plastic parts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04310714A (en) * 1991-04-10 1992-11-02 Sekisui Chem Co Ltd Multi-layer molded product
CN1158293A (en) * 1996-11-20 1997-09-03 陕西秦岭航空电气公司 Injection shaping tech. and process method of balance shaft gear
EP1860374A1 (en) * 2005-03-16 2007-11-28 Mitsubishi Engineering-Plastics Corporation Light guiding plate formed of transparent resin, planar light source, and light guiding plate manufacturing method
CN101229581A (en) * 2008-01-25 2008-07-30 华中科技大学 Casting method and mould for car air conditioning compressor slanting plate
CN201960698U (en) * 2011-03-04 2011-09-07 慈溪市盛艺模具有限公司 Dual-material mould for miniature plastic parts

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744837A (en) * 2012-07-27 2012-10-24 慈溪市盛艺模具有限公司 Injection mould for preparing screwing cover and using method thereof
CN102744837B (en) * 2012-07-27 2014-08-06 慈溪市盛艺模具有限公司 Injection mould for preparing screwing cover and using method thereof
CN104260285A (en) * 2014-09-25 2015-01-07 昆山伯建精密模具有限公司 Cold-runner mold
CN105773919A (en) * 2016-04-23 2016-07-20 东莞市盛涵精密塑胶制品有限公司 Inverse die structure with feed inlet and thimble on same side

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