CN101491932A - Double-color injection-molding die with active spacing block and preparation method thereof - Google Patents

Double-color injection-molding die with active spacing block and preparation method thereof Download PDF

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Publication number
CN101491932A
CN101491932A CNA2009100246000A CN200910024600A CN101491932A CN 101491932 A CN101491932 A CN 101491932A CN A2009100246000 A CNA2009100246000 A CN A2009100246000A CN 200910024600 A CN200910024600 A CN 200910024600A CN 101491932 A CN101491932 A CN 101491932A
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CN
China
Prior art keywords
punch
injection molding
molding cavity
spacing block
mould
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2009100246000A
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Chinese (zh)
Inventor
查鸿达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Jiawang Precision Mould Co Ltd
Jiangsu Delta Mould Park Development Co Ltd
Original Assignee
Changzhou Jiawang Precision Mould Co Ltd
Jiangsu Delta Mould Park Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Jiawang Precision Mould Co Ltd, Jiangsu Delta Mould Park Development Co Ltd filed Critical Changzhou Jiawang Precision Mould Co Ltd
Priority to CNA2009100246000A priority Critical patent/CN101491932A/en
Publication of CN101491932A publication Critical patent/CN101491932A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a double-color injection moulding mould with a movable separator and a method for preparing the same. Compared with two forms of convex mould translation and convex mould rotation of the prior double-color injection moulding mould, the double-color injection moulding mould is a single-cavity double-injection mould and comprises a convex mould and a concave mould. The moulding surface of the concave mould and the moulding surface of the convex mould form an injection moulding cavity; the convex mould comprises a first convex mould and a second convex mould between which a gap exists; and the gap is provided with a movable separating slice inside, and the movable separating slice extends into the injection moulding cavity and divides the injection moulding cavity into a first injection moulding cavity and a second injection moulding cavity which are not communicated. The mould has the advantages of simple structure, small volume, small ground occupying range, small investment, low energy consumption and high injection moulding efficiency.

Description

A kind of bicolor injection mould and preparation method with active spacing block
One, technical field
The present invention relates to a kind of bicolor injection mould, specifically a kind of bicolor injection mould with active spacing block.
Two, background technology
Traditional bicolor injection mould claims polychrome mould, many materials injection mould to have " punch translation " and " punch rotation " two kinds of forms again.
The mould of " punch translation ", it has first die, two dies of second die and a punch.First die, second die, first barrel, second barrel are arranged on injection machine to be decided on the plate.Punch is arranged on the motor-driven plate of injection moulding.The die cavity that the profile of first die and the profile of punch are formed is the part of finished product.Its injection moulding process: during the first barrel injection that communicates with die cavity, the punch and the first die closure are finished the injection of first kind of plastics.After first kind of plastics solidified, first die separated with punch, and the semi-finished product that formed by first kind of plastics rest on the punch, and moved to the position of aiming at second die with punch.The profile of second die and the profile of punch are formed die cavity, after the injection machine closure, when second barrel that communicates with die cavity carries out the injection of second kind of plastics, second kind of plastics just is filled into the space in the die cavity, after second kind of plastics solidified, injection machine was opened mould, the push rod action, make finished product break away from punch, take out complete goods.
The double-color mold of " punch rotation " form, it has first die, two dies of second die and first punch, the back-to-back punch that is combined into of second punch to be called for short combined heave die.This punch is rotatable.The die cavity that the profile of the profile of first die and first punch is formed is the part of finished product.The die cavity that the profile of the profile of second die and second punch is formed is another part of finished product.The double coloured plastic injection machine that is equipped with has first barrel that communicates with die cavity, two barrels of second barrel that communicate with die cavity, and second barrel generally is arranged on the vertical direction of the injection machine direction of motion.First kind of plastics of first barrel injection, second kind of plastics of second barrel injection.This mould can be injected two kinds of different plastics simultaneously.After two kinds of plastics injecting solidified, injection machine was opened and is ejected complete goods (only be being ejected of complete goods on second punch, " semi-finished product " that first kind of plastics form are still stayed on first punch) by push rod.After taking down goods, " semi-finished product " of first kind of plastics formation are followed second punch and are turned over 180 degree, after the injection machine closure, carry out next one circulation.
Because first, second barrel of " punch translation " pattern is injection in turn, and first, second barrel of " punch rotation " pattern is simultaneously injected.So, same product, the efficient of using " punch rotation " mode of manufacture is with 200% of the efficient of " punch translation " mode of manufacture.
The common drawback of above-mentioned two kinds of double-color molds, be exactly that punch, die quantity are more, the investment amount is bigger, mould development is comparatively complicated, require injection machine that bigger working space is arranged simultaneously, operation during work is more loaded down with trivial details, and wherein the mould of " punch rotation " pattern needs rotation when work, has reduced injection moulding efficient.
Three, summary of the invention:
The purpose of this invention is to provide a kind of bicolor injection mould and preparation method with active spacing block, is that a kind of mechanism is simple, to need not large size plastic jetting-moulding device supporting, and the high double-color mold of injection moulding efficient.
A kind of bicolor injection mould with active spacing block comprises punch, die, decides plate, moves plate, push rod, die socket, feeding cylinder, the profile of die and the profile of punch are formed injection molding cavity, described punch comprises first punch and second punch two parts, and is gapped between two parts; In this gap, be provided with and extend into the active spacing block that in the injection molding cavity injection molding cavity is divided into two first injection molding cavities that do not communicate and second injection molding cavity; First injection molding cavity and second injection molding cavity communicate with the first cast passage, the second cast passage respectively; Active spacing block is connected with transmission mechanism; Active spacing block can withdraw from injection molding cavity along the gap under the drive of transmission mechanism, the top surface of active spacing block is sealed the gap between first punch and second punch two parts, forms the injection molding cavity that one first injection molding cavity is communicated with second injection molding cavity this moment.
When first kind of plastics carried out injection moulding by the cast passage to first injection molding cavity, because active spacing block makes first injection molding cavity not communicate with second injection molding cavity, first kind of plastics can only be full of first injection molding cavity, and can not flow into second injection molding cavity.After first kind of parts of plastics solidified, drive active spacing block by transmission mechanism and withdraw from injection molding cavity and make and sealed by the top surface of active spacing block, at this moment formed the injection molding cavity of another sealing at the profile of the profile of the top surface of the active spacing block at punch profile place, second punch, die and first kind of set plastic face in the gap at punch profile place.When second kind of plastics injecting carried out injection moulding by the cast passage to this injection molding cavity by second barrel, second kind of plastics just had been full of this injection molding cavity.This moment, first kind of plastics and second kind of plastics were combined into finished product.This double-color mold is single chamber dijection mould.
As a further improvement on the present invention; the width in described gap is slightly larger than the width that is arranged on active spacing block wherein; first punch or the distance between second punch that active spacing block is relative with it are excessive; the plastics of melting state will enter between active spacing block first punch or second punch relative with it, make the mould cisco unity malfunction.If this distance is too small, first punch and second punch will clamp active spacing block, make that it can not proper motion.General in the use of mould, framedly be out of shape by the meeting that influences of injection pressure downwards, can produce a very big power that compresses first punch and second punch.The process experiment draws active spacing block first punch relative with it, the clearance distance between second punch is preferably about 0.02mm.
The present invention adopts a die and punch divided into two parts to realize double-shot moulding, and mould structure is uncomplicated, and volume is little, does not need injection machine that bigger working space is arranged, so invest lessly, energy consumption is low.Simultaneously, in injection moulding process, die or punch do not have extra rotation, mobile action, injection moulding efficient height.
A kind of bicolor injection mould with active spacing block of the present invention with respect to " punch translation " and " punch rotation " two kinds of forms of traditional double-shot moulding mould, is a kind of innovation, and this double-color mold is single chamber dijection mould.Mould structure is uncomplicated, and volume is little, does not need injection machine that bigger working space is arranged, and invests lessly, and energy consumption is low.Simultaneously, in injection moulding process, die or punch do not have extra rotation, mobile action, have improved injection moulding efficient.
Four, description of drawings
Fig. 1 is the structural representation of this invention;
Fig. 2 is the structural representation of first punch;
Fig. 3 is the structure chart of active spacing block;
Fig. 4 Fig. 5 is the structural representation of " punch translation " mould;
Fig. 6 is the structural representation of the mould of " punch rotation ";
Member among the figure comprises: 1-decides plate, 2-second barrel, 3-active spacing block, 4-second barrel, 5-second punch, 6-first punch, 7-limited block, 8-push rod, the moving plate of 9-, 10-transmission mechanism, 11-convex mould base, 12-die, 13-first injection molding cavity, 14-second injection molding cavity.
Five, the specific embodiment:
The invention will be further described below in conjunction with drawings and Examples.
A kind of bicolor injection mould and preparation method of the present invention with movable active spacing block, wherein a kind of bicolor injection mould with active spacing block comprises punch, die 12, decide plate 1, moving plate 9, push rod 8, die socket 11 and feeding cylinder, described punch comprises first punch 6 and second punch 5, first punch 6 and second punch 5 are inlayed in the convex mould base 11 jointly, convex mould base is arranged on the motor-driven plate 9 of injection moulding, die 12 is arranged on injection machine to be decided on the plate 1, the profile of die 12 and the profile of punch are formed injection molding cavity, first injection molding cavity 13 and second injection molding cavity 14 respectively with first barrel 2, second barrel 4 communicates; Be extruded with two limited blocks 7 on the surface 5 of first punch 6 with respect to second punch, limited block 7 contacts with second punch, 5 surfaces, and the surface of first punch 6 and second punch 5 forms the gap, and active spacing block 3 is set in the gap.Described active spacing block 3 is meshed with two limited blocks 7, limited block 7 is to be used for controlling the position of active spacing block 3 in active procedure to prevent that the deviation effects injection moulding from appearring in banking stop, fixedly connected by connecting rod with the piston rod of transmission mechanism 10 in the lower end of active spacing block 3, active spacing block 3 can be provided with push rod 8 respectively through first punch 6 and second punch 5 along the side slip of limited block 7 on the described moving plate 9 under the drive of transmission mechanism 10.
When active spacing block 3 moves upward when extending in the injection molding cavity, injection molding cavity is divided into two first injection molding cavities 13 that do not communicate and second injection molding cavity 14.When active spacing block 3 moves downward when withdrawing from injection molding cavity, the gap at punch profile place is sealed by the upper surface of active spacing block 3, and wherein first barrel 2 communicates with first injection molding cavity 13, and second barrel 4 communicates with second injection molding cavity 14.
The width in described gap is slightly larger than the width of the active spacing block 3 that is arranged on wherein, first punch 6 or the distance between second punch 5 that active spacing block 3 is relative with it are excessive, the plastics of melting state will enter between active spacing block 3 first punch 6 or second punch 5 relative with it, make the mould cisco unity malfunction.If this distance is too small, first punch 6 and second punch 5 will clamp active spacing block 3, make that it can not proper motion.General in the use of mould, framedly be out of shape by the meeting that influences of injection pressure downwards, can produce a very big power that compresses first punch 6 and second punch 3.The process experiment draws active spacing block 3 first punch 6 relative with it, the clearance distance between second punch 3 is preferably about 0.02mm.
When first kind of plastics carried out injection moulding by the cast passage to first injection molding cavity 13, because active spacing block makes first injection molding cavity 13 not communicate with second injection molding cavity 14, first kind of plastics was full of first injection molding cavity 13, and do not flow into second injection molding cavity 14.After first kind of plastics solidifies, drive active spacing blocks 3 by transmission mechanism 10 and withdraw from injection molding cavity and make and sealed by the top surface of active spacing block 3, at this moment formed the injection molding cavity of another sealing at the profile of the profile of the top surface of the active spacing block 3 at punch profile place, second punch 6, die and first kind of set plastic face in the gap at punch profile place.When second kind of plastics injecting carries out injection moulding by the cast passage to this injection molding cavity by second barrel 4, second kind of plastics just has been full of this injection molding cavity, solidify Deng second kind of institute's injection molding material, this moment, first kind of plastics and second kind of plastics were combined into finished parts, active force by push rod 8 ejects finished parts from the punch profile at last, finish whole process, this double-color mold is single chamber dijection mould.

Claims (4)

1, a kind of bicolor injection mould with active spacing block, comprise punch, die (12), decide plate (1), move plate (9), push rod (8), feeding cylinder, when cooperating with the profile of punch, the profile of die (12) forms injection molding cavity, it is characterized in that: described punch comprises first punch (6) and second punch (5) two parts, be provided with the gap between two parts, be provided with active spacing block (3) in this gap, described active spacing block (3) stretches into injection molding cavity injection molding cavity is divided into two first injection molding cavities (13) that do not communicate and second injection molding cavity (14); First injection molding cavity (13) links to each other respectively at first barrel (2) and second barrel (4) by the cast passage with second injection molding cavity (14); The lower end of active spacing block (3) is connected with transmission mechanism (10) by connecting rod, described active spacing block (3) can withdraw from injection molding cavity along the gap under the drive of transmission mechanism (10), push rod (8) is set through first punch (6) and second punch (5) on the described moving plate (9) respectively.
2, a kind of bicolor injection mould with active spacing block according to claim 1 is characterized in that, the side that described first punch (6) contacts with active spacing block (3) is provided with two limited blocks (7) that are meshed with active spacing block (3) bottom.
3, a kind of bicolor injection mould with active spacing block according to claim 2 is characterized in that, the width in described punch gap is than the big 0.02mm of width of active spacing block (3).
4, a kind of method of utilizing double-color mold as claimed in claim 1 to prepare moulding may further comprise the steps:
A) punch and the die (12) of first punch (6) and second punch (5) composition is involutory, die (12) profile and punch profile form injection molding cavity;
B) drive separator by transmission mechanism and stretch into injection molding cavity, injection molding cavity is divided into two first injection molding cavities (13) that do not communicate and second injection molding cavity (14) along the gap between first punch (6) and second punch (5);
C) by the cast passage first injection molding cavity (13) is carried out injection moulding;
D) drive active spacing block (3) by transmission mechanism (10) and withdraw from injection molding cavity along the gap and make the top surface of active spacing block (3) seal the gap between first punch (6) and second punch (5) two parts, form the injection molding cavity that one first injection molding cavity (13) is communicated with second injection molding cavity (14) at this moment;
E) by the cast passage second injection molding cavity (14) is carried out injection moulding;
F) withdraw from profiled member by push rod (8) effect.
CNA2009100246000A 2009-02-23 2009-02-23 Double-color injection-molding die with active spacing block and preparation method thereof Pending CN101491932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2009100246000A CN101491932A (en) 2009-02-23 2009-02-23 Double-color injection-molding die with active spacing block and preparation method thereof

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Application Number Priority Date Filing Date Title
CNA2009100246000A CN101491932A (en) 2009-02-23 2009-02-23 Double-color injection-molding die with active spacing block and preparation method thereof

Publications (1)

Publication Number Publication Date
CN101491932A true CN101491932A (en) 2009-07-29

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102038567A (en) * 2009-10-14 2011-05-04 冷博 Condom with self-standing skirt-shaped structure and cock ring and manufacturing method thereof
CN102343648A (en) * 2011-10-31 2012-02-08 吴江江旭纺织有限公司 Double-colored injection mold for spinning
CN103660138A (en) * 2012-09-19 2014-03-26 发那科株式会社 Manufacturing method and injection molding system for multi-color molded article
CN107443684A (en) * 2017-09-26 2017-12-08 南通市众惠模具有限公司 A kind of rapid forming mold of service life length

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957727A (en) * 1982-09-29 1984-04-03 Yoshida Kogyo Kk <Ykk> Method of molding synthetic resin container
JPS5971839A (en) * 1982-10-18 1984-04-23 Bandai Mokei:Kk Multi-color injection molding machine and molding thereby
CN101027173A (en) * 2004-08-18 2007-08-29 佛吉亚汽车内部设备工业公司 Mould for the injection moulding of a plastics part and moulding process
CN201385406Y (en) * 2009-02-23 2010-01-20 江苏长三角模具城发展有限公司 Dual-color injection mould with movable isolation sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957727A (en) * 1982-09-29 1984-04-03 Yoshida Kogyo Kk <Ykk> Method of molding synthetic resin container
JPS5971839A (en) * 1982-10-18 1984-04-23 Bandai Mokei:Kk Multi-color injection molding machine and molding thereby
CN101027173A (en) * 2004-08-18 2007-08-29 佛吉亚汽车内部设备工业公司 Mould for the injection moulding of a plastics part and moulding process
CN201385406Y (en) * 2009-02-23 2010-01-20 江苏长三角模具城发展有限公司 Dual-color injection mould with movable isolation sheet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102038567A (en) * 2009-10-14 2011-05-04 冷博 Condom with self-standing skirt-shaped structure and cock ring and manufacturing method thereof
CN102343648A (en) * 2011-10-31 2012-02-08 吴江江旭纺织有限公司 Double-colored injection mold for spinning
CN103660138A (en) * 2012-09-19 2014-03-26 发那科株式会社 Manufacturing method and injection molding system for multi-color molded article
CN103660138B (en) * 2012-09-19 2016-02-24 发那科株式会社 The manufacture method of polychrome formed products and injection molding system
US9656416B2 (en) 2012-09-19 2017-05-23 Fanuc Corporation Manufacturing method and injection molding system for multi-color molded article
CN107443684A (en) * 2017-09-26 2017-12-08 南通市众惠模具有限公司 A kind of rapid forming mold of service life length

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Application publication date: 20090729