CN106584789A - Injection molding mould for upper cover of cylinder body of automobile engine - Google Patents

Injection molding mould for upper cover of cylinder body of automobile engine Download PDF

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Publication number
CN106584789A
CN106584789A CN201611184459.7A CN201611184459A CN106584789A CN 106584789 A CN106584789 A CN 106584789A CN 201611184459 A CN201611184459 A CN 201611184459A CN 106584789 A CN106584789 A CN 106584789A
Authority
CN
China
Prior art keywords
core
guide
pin
little
bar
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
CN201611184459.7A
Other languages
Chinese (zh)
Inventor
袁玮骏
黄名兴
唐绍淼
罗丙球
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.)
LIUZHOU TONGWEI MACHINERY Co Ltd
Original Assignee
LIUZHOU TONGWEI MACHINERY 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 LIUZHOU TONGWEI MACHINERY Co Ltd filed Critical LIUZHOU TONGWEI MACHINERY Co Ltd
Priority to CN201611184459.7A priority Critical patent/CN106584789A/en
Publication of CN106584789A publication Critical patent/CN106584789A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332Mountings or guides therefor; Drives therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • B29C2045/338Mould parts with combined axial and transversal movements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/748Machines or parts thereof not otherwise provided for
    • B29L2031/749Motors

Abstract

The invention provides an injection molding mould for an upper cover of a cylinder body of an automobile engine according to the problem that an existing injection molding mould for manufacturing the upper cover of the cylinder body of the automobile engine is complex in structure, high in producing cost, low in producing efficiency and low in plastic-part product size accuracy. The injection molding mould for the upper cover of the cylinder body of the automobile engine is of a layout with two cavities in the mould, dynamic and static cooperation is adopted, and the mould structure is compact. A dog-leg cam side-direction core-pulling mechanism is adopted in the structure for replacing a hydraulic pressure core-pulling mechanism. An adopted large oblique guide rod and small guide rod can form a local shape of a plastic part and serve as an ejecting mechanism, and a used wear-resistant block is wearable and convenient to replace. Results show that the injection molding mould for manufacturing the upper cover of the cylinder body of the automobile engine is simple in structure and convenient to maintain, the cost of a large injection molding mould is lowered, the service life of the large injection molding mould is prolonged, producing efficiency is improved, and product quality is guaranteed.

Description

Lid injection mold on a kind of automobile engine cylinder-body
Technical field
The present invention relates to lid injection mold in Design of Dies technical field, more particularly to a kind of automobile engine cylinder-body.
Background technology
The characteristics of there is high production efficiency and various complicated shape products can be manufactured due to injection mo(u)lding, injection mo(u)lding Have become production plastic products most common method.Generally, injection mo(u)lding design includes that the design of plastic product, mould set The design of meter and Shooting Technique, these factors affects the quality and performance of mould product.Plastic is Hyundai Motor science and technology Progressive developing direction, plastic piece shaping technology is got up with plasticization of Automobile seamless combination, innovates and create forming technique.
Automobile engine cylinder-body is a plastic product, and cylinder body is different, and its corresponding superstructure is also different.Present people Focus on the simplification and innovation of lid injection mold structure on automobile engine cylinder-body, such as the technology people of Ningbo Shuanglin Die Co., Ltd Member devises a kind of core-pulling device of the car engine cover injection mold with side wall back-off structure, by simple several zero Part can just complete the core pulling process of baroque back-off structure, and simple structure, small volume can be realized flat along product side wall The horizontal core pulling in face can realize the horizontal core pulling of vertical product sidewall plane again.Technical staff's design of Dong Feng Auto Corporation technique center Mould using reversible deformation compensate, it is ensured that the dimensional accuracy of automotive engine cylinder cover plastic product.But the layout side of mould Formula is a cavity per mould, and productivity ratio is still not high enough.
Lid plastic product is an internal, outside plastic product with many places groove and hole on automobile engine cylinder-body, The part structure is more complicated, injection mold not easy mold release, for the longer hole inconsistent with die sinking direction is frequently with liquid in production Pressure side-parting core-pulling mechanism, increased operational sequence;And on existing automobile engine cylinder-body lid injection mold core Do not possess push piece function, mould structure is complicated, and manufacture is complicated, and maintenance is inconvenient, and the mold use life-span is low, and production cost is high, Low production efficiency, plastic product dimensional accuracy is low.
The content of the invention
It is an object of the invention to provide lid injection mold on a kind of automobile engine cylinder-body, be up to above-mentioned purpose, this It is bright to be achieved through the following technical solutions:
Lid injection mold on a kind of automobile engine cylinder-body, by the way of sound coordinates and combines, is fixed with Bottom clamp plate 1 Push pedal guide pillar 4, push pedal guide pillar 4 is slidably matched with ejector guide pillar 3, ejector guide pillar 3 and the stationary fit of push pedal 2, fixed on top clamping plate 8 There are Angle Pin 7, sprue bush 16, runner lock pin 21, curved pin 24, latch segment 27, band shoulder guide pin bushing 40 and range line pull bar 41, die cavity 9 with the stationary fit of solid plate 19, core 31 and the stationary fit of moving platen 32, be respectively equipped with cooling water channel on die cavity 9, core 31, and cold But water channel is provided with the removal hole of die cavity 9 away from mold cavity surface apart from equal on solid plate 19, and core 31 is provided with moving platen 32 Removal hole, Angle Pin 7 is slidably matched with side slide 5, and curved pin 24 is slidably matched with angled-lift splits 28, and side slide 5 is fixed with side core 6 Connection, angled-lift splits 28 is fixedly connected with oblique core 25, spring 42 be enclosed within the outside cylinder of range line pull bar 41 and with the phase of solid plate 19 Contact;
Tooth bar is made on cross depression bar, simplifies core-pulling mechanism.One end of cross depression bar 12 is slidably matched with pressing plate 11, cross pressure Bar 12 is connected with little spring 13, and the other end of cross depression bar 12 is provided with rack and pinion 14 and engages, gear 14 and little side core The tooth bar engagement at 10-end;By cross depression bar 12 and the collective effect of gear 14, by the little side type inconsistent with die sinking direction Core 10 is extracted out, simplifies core-pulling mechanism.
Further, wear-resistant block 33 is slidably matched with the bar portion of big inclined guide 23 and the bar portion of little inclined guide 20, auxiliary It is oriented to.
Further, the core for forming plastic medial surface shape is inlayed in the side of little inclined guide 20, big inclined guide 23, it is little tiltedly Guide rod 20 is engaged respectively with core 31, and large and small inclined guide constitutes combination type core with core.
Further, during die sinking, solid plate 19 is moved to left, and is separated with top clamping plate 8;At the same time, sprue condensate 17 with Sprue bush 16 is separated, and in the presence of runner lock pin 21, runner condensate 22 is pulled out;At the same time in the effect of gear 14 Under, little side core 10 is extracted, and in the presence of Angle Pin 7, side slide 5 drives side core 6 complete along the guide runner of moving platen 32 Into side core core pulling, in the presence of curved pin 24, angled-lift splits 28 drives oblique core 25 to complete oblique type along the guide runner of moving platen 32 Core core pulling works;Solid plate 19 continues to move to left, and when range line pull bar 41 is encountered, solid plate 19 stops movement;Continue dynamic model part Move to left, force shop bolt 39 to be deviate from from the pit of solid plate 19;Plastic bag on core 31 as dynamic model continues to move to left, directly Contact with push pedal 2 to injection machine push rod, push pedal 2 promotes ejector pin retaining plate 35, in the effect of little inclined guide 20 and big inclined guide 23 Under, the core pulling work inside plastic is realized, and little inclined guide 20 and big inclined guide 23 push away plastic jointly while core pulling Arc-shaped inner surface, little inclined guide 20, big inclined guide 23 and thimble 15 release plastic;During matched moulds, by shoulder leader pin 37 with Make without shoulder guide pin bushing 38 and band shoulder guide pin bushing 40, the accurate pairing of cover half two large divisions, and release link 36 makes ejecting mechanism reset;Tiltedly Guide pillar 7 makes side core 6 reset, and curved pin 24 makes oblique core 25 reset.
The invention has the beneficial effects as follows:The present invention replaces hydraulic core extracting machine using curved pin side core-drawing mechanism in structure Structure, the large and small inclined guide of employing can form the local shape of plastic, and ejecting mechanism can be done again, and the wear-resistant block for being used was both resistance to Mill is conveniently replaceable again.As a result show:Make the injection mold structure covered on automobile engine cylinder-body simple, it is easy to maintenance, reduce The cost of large injection mold, increased the service life of large mold, improve productivity ratio, it is ensured that the quality of product.
Description of the drawings
Fig. 1 is lid injection mold front view on the engine cylinder-body of the present invention;
Fig. 2 is lid injection mold top view on the engine cylinder-body of the present invention;
In figure, 1- Bottom clamp plates, 2- push pedals, 3- ejector guide pillars, 4- push pedal guide pillars, 5- side slides, 6- side cores, 7- Angle Pins, 8- cover half bases, 9- die cavities, 10- side cores, 11- pressing plates, 12- cross depression bars, 13- little springs, 14- gears, 15- thimbles, 16- Sprue bush, 17- sprue condensates, 18- briquettings, 19- solid plates, the little inclined guides of 20-, 21- runner lock pins, 22- runners Condensate, the big inclined guides of 23-, the curved pins of 24-, the oblique cores of 25-, 26- straight pins, 27- latch segments, 28- angled-lift splitses, hexagonal spiral shell in 29- Nail, 30- baffle plates, 31- cores, 32- moving platens, 33- wear-resistant blocks, 34- inclined guide slider guides, 35- ejector pin retaining plates, 36- resets Bar, 37- shoulder leader pins, 38- is without shoulder guide pin bushing, 39- shop bolts, 40- band shoulder guide pin bushings, 41- range line pull bars, 42- springs.
Specific embodiment
Accompanying drawing is combined below by specific embodiment to be described in further detail the present invention.
Lid injection mold is coordinated using sound and is combined on the automobile engine cylinder-body of the present invention, the mould features compact structure.Such as Shown in accompanying drawing 1, accompanying drawing 2, push pedal guide pillar 4 is fixed with Bottom clamp plate 1, push pedal guide pillar 4 is slidably matched with ejector guide pillar 3, push pedal Guide pin bushing 3 and the stationary fit of push pedal 2, are fixed with Angle Pin 7, sprue bush 16, runner lock pin 21, curved pin 24, lock on top clamping plate 8 Tight block 27, band shoulder guide pin bushing 40 and range line pull bar 41, die cavity 9 and the stationary fit of solid plate 19, core 31 and the stationary fit of moving platen 32, type Be respectively equipped with cooling water channel on chamber 9, core 31, and cooling water channel away from mold cavity surface apart from equal, be provided with type on solid plate 19 The removal hole in chamber 9, is provided with the removal hole of core 31 on moving platen 32, Angle Pin 7 is slidably matched with side slide 5, curved pin 24 with it is oblique Slide block 28 is slidably matched, and side slide 5 is fixedly connected with side core 6, and angled-lift splits 28 is fixedly connected with oblique core 25, and spring 42 is enclosed within Contact in the outside cylinder of range line pull bar 41 and with solid plate 19.
Large and small inclined guide can form the local shape of plastic, and ejecting mechanism can be done again, simplify mould structure.It is little tiltedly to lead The core for forming plastic medial surface shape is inlayed in the side of bar 20, and big inclined guide 23, little inclined guide 20 match respectively with core 31 Close, large and small inclined guide constitutes combination type core with core, be not only easy to processing, and large and small inclined guide is realized in plastic when molding Plastic is together released while portion takes out side with push rod.
Wear-resistant block improves die life, is easy to maintenance.The bar portion and little inclined guide 20 of wear-resistant block 33 and big inclined guide 23 Bar portion be slidably matched, auxiliary be oriented to, use wear-resisting steel making, material is durable;Wear-resistant block is absolute construction, it is easy to assembles, change And maintenance.
Tooth bar is made on cross depression bar, simplifies core-pulling mechanism.One end of cross depression bar 12 is slidably matched with pressing plate 11, and ten Word depression bar 12 is connected with little spring 13, and the other end of cross depression bar 12 is provided with rack and pinion 14 and engages, gear 14 and little side type The tooth bar engagement at core 10-end.By cross depression bar 12 and the collective effect of gear 14, by the little side inconsistent with die sinking direction Core 10 is extracted out, simplifies core-pulling mechanism.
During die sinking, mould is moved to left first in I-I die joint partings, i.e. solid plate 19, is separated with top clamping plate 8;It is same with this When, sprue condensate 17 is separated with sprue bush 16, and in the presence of runner lock pin 21, runner condensate 22 is pulled out;With this Simultaneously in the presence of gear 14, little side core 10 is extracted, and in the presence of Angle Pin 7, side slide 5 drives the edge of side core 6 The guide runner of moving platen 32 completes side core core pulling, and in the presence of curved pin 24, angled-lift splits 28 drives oblique core 25 along moving platen 32 guide runner completes oblique core core pulling work;Solid plate 19 continues to move to left, and when range line pull bar 41 is encountered, solid plate 19 stops It is mobile;Dynamic model part continues to move to left, and forces shop bolt 39 to be deviate from from the pit of solid plate 19, in II-II die joint partings, As dynamic model continues to move to left on core 31, until injection machine push rod is contacted with push pedal 2, push pedal 2 promotes push rod to fix to plastic bag Plate 35, in the presence of little inclined guide 20 and big inclined guide 23, realizes the core pulling work inside plastic, and little inclined guide 20 And big inclined guide 23 pushes away the arc-shaped inner surface of plastic, little inclined guide 20, big inclined guide 23 and thimble 15 jointly while core pulling Plastic is released;During matched moulds, by shoulder leader pin 37 with make without shoulder guide pin bushing 38 and band shoulder guide pin bushing 40, cover half two large divisions it is accurate Pairing, and release link 36 makes ejecting mechanism reset;Angle Pin 7 makes side core 6 reset, and curved pin 24 makes oblique core 25 reset.
To sum up, injection mold structure complexity, production cost of the present invention for lid on existing making automobile engine cylinder-body The low problem of height, low production efficiency, plastic product dimensional accuracy, the mould of design is the chamber layout of a mould two.Adopt in structure Curved pin side core-drawing mechanism replaces hydraulic core pulling mechanism, the large and small inclined guide of employing to form the local shape of plastic, and energy Ejecting mechanism is done, the wear-resistant block for being used is not only wear-resisting but also is conveniently replaceable.As a result show:Make the note covered on automobile engine cylinder-body Mould simple structure, it is easy to maintenance, the cost of large injection mold is reduced, the service life of large mold is increased, carry High productivity ratio, it is ensured that the quality of product.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention, On the premise of without departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's Protection domain.

Claims (4)

1. lid injection mold on a kind of automobile engine cylinder-body, by the way of sound coordinates and combines, it is characterised in that:Dynamic model Push pedal guide pillar 4 is fixed with seat board 1, push pedal guide pillar 4 is slidably matched with ejector guide pillar 3, ejector guide pillar 3 and the stationary fit of push pedal 2 are fixed Angle Pin 7, sprue bush 16, runner lock pin 21, curved pin 24, latch segment 27, band shoulder guide pin bushing 40 and limit are fixed with die holder plate 8 Away from pull bar 41, die cavity 9 and the stationary fit of solid plate 19, core 31 and the stationary fit of moving platen 32, it is respectively equipped with die cavity 9, core 31 Cooling water channel, and cooling water channel away from mold cavity surface apart from equal, the removal hole of die cavity 9, moving platen 32 are provided with solid plate 19 On be provided with the removal hole of core 31, Angle Pin 7 is slidably matched with side slide 5, and curved pin 24 is slidably matched with angled-lift splits 28, side slide 5 are fixedly connected with side core 6, and angled-lift splits 28 is fixedly connected with oblique core 25, and spring 42 is enclosed within the outside cylinder of range line pull bar 41 And contact with solid plate 19;Tooth bar is made on cross depression bar, simplifies tube bundle extracting machine, one end and the pressing plate 11 of cross depression bar 12 are slided Dynamic to coordinate, cross depression bar 12 is connected with little spring 13, and the other end of cross depression bar 12 is provided with rack and pinion 14 and engages, gear 14 Engage with the tooth bar at little side core 10-end;By cross depression bar 12 and the collective effect of gear 14, will differ with die sinking direction The little side core 10 for causing is extracted out, simplifies core-pulling mechanism.
2. mould according to claim 1, it is characterised in that:Wear-resistant block 33 and the bar portion of big inclined guide 23 and little tiltedly lead The bar portion of bar 20 is slidably matched, and auxiliary is oriented to.
3. mould according to claim 1, it is characterised in that:Inlay formation plastic medial surface shape in the side of little inclined guide 20 The core of shape, big inclined guide 23, little inclined guide 20 are engaged respectively with core 31, and large and small inclined guide constitutes combined with core Core.
4. mould according to claim 1, it is characterised in that:During die sinking, solid plate 19 is moved to left, and is separated with top clamping plate 8; At the same time, sprue condensate 17 is separated with sprue bush 16, and in the presence of runner lock pin 21, runner condensate 22 draws Go out;At the same time in the presence of gear 14, little side core 10 is extracted, and in the presence of Angle Pin 7, side slide 5 drives side Core 6 completes side core core pulling along the guide runner of moving platen 32, and in the presence of curved pin 24, angled-lift splits 28 drives the edge of oblique core 25 The guide runner of moving platen 32 completes oblique core core pulling work;Solid plate 19 continues to move to left, when range line pull bar 41 is encountered, solid plate 19 stop movement;Dynamic model part continues to move to left, and forces shop bolt 39 to be deviate from from the pit of solid plate 19;Plastic bag is in core As dynamic model continues to move to left on 31, until injection machine push rod is contacted with push pedal 2, push pedal 2 promotes ejector pin retaining plate 35, tiltedly leads little In the presence of bar 20 and big inclined guide 23, the core pulling work inside plastic, and little inclined guide 20 and big inclined guide 23 are realized Push away the arc-shaped inner surface of plastic jointly while core pulling, little inclined guide 20, big inclined guide 23 and thimble 15 release plastic;Close During mould, by shoulder leader pin 37 with make without shoulder guide pin bushing 38 and band shoulder guide pin bushing 40, the accurate pairing of cover half two large divisions, and reset Bar 36 makes ejecting mechanism reset;Angle Pin 7 makes side core 6 reset, and curved pin 24 makes oblique core 25 reset.
CN201611184459.7A 2016-12-20 2016-12-20 Injection molding mould for upper cover of cylinder body of automobile engine Pending CN106584789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611184459.7A CN106584789A (en) 2016-12-20 2016-12-20 Injection molding mould for upper cover of cylinder body of automobile engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611184459.7A CN106584789A (en) 2016-12-20 2016-12-20 Injection molding mould for upper cover of cylinder body of automobile engine

Publications (1)

Publication Number Publication Date
CN106584789A true CN106584789A (en) 2017-04-26

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM314112U (en) * 2006-11-13 2007-06-21 Cheng Uei Prec Ind Co Ltd Side core-pulling mechanism of mould
CN101670868A (en) * 2009-09-28 2010-03-17 重庆新源模具有限公司 Tail frame of high-end motorcycle and sophisticated and complicated plastic injection mold thereof
CN102310526A (en) * 2011-09-02 2012-01-11 万泰工业(大连)有限公司 Injection mold of automobile locked-lid
JP2014151465A (en) * 2013-02-05 2014-08-25 Calsonic Kansei Corp Molding die
CN104385537A (en) * 2014-11-26 2015-03-04 江苏师范大学 Injection mold for automobile engine cylinder head cover
CN204322445U (en) * 2014-11-26 2015-05-13 江苏师范大学 Cylinder cover for automobile engine injection mold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM314112U (en) * 2006-11-13 2007-06-21 Cheng Uei Prec Ind Co Ltd Side core-pulling mechanism of mould
CN101670868A (en) * 2009-09-28 2010-03-17 重庆新源模具有限公司 Tail frame of high-end motorcycle and sophisticated and complicated plastic injection mold thereof
CN102310526A (en) * 2011-09-02 2012-01-11 万泰工业(大连)有限公司 Injection mold of automobile locked-lid
JP2014151465A (en) * 2013-02-05 2014-08-25 Calsonic Kansei Corp Molding die
CN104385537A (en) * 2014-11-26 2015-03-04 江苏师范大学 Injection mold for automobile engine cylinder head cover
CN204322445U (en) * 2014-11-26 2015-05-13 江苏师范大学 Cylinder cover for automobile engine injection mold

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Application publication date: 20170426