CN106994766A - Deep chamber thick-walled plastic part fretting map injection mold - Google Patents

Deep chamber thick-walled plastic part fretting map injection mold Download PDF

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Publication number
CN106994766A
CN106994766A CN201710271429.8A CN201710271429A CN106994766A CN 106994766 A CN106994766 A CN 106994766A CN 201710271429 A CN201710271429 A CN 201710271429A CN 106994766 A CN106994766 A CN 106994766A
Authority
CN
China
Prior art keywords
plate
die cavity
sprue bush
plastics
needle
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
CN201710271429.8A
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Chinese (zh)
Inventor
梁正华
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.)
Zhejiang Kaihua Mould Co Ltd
Original Assignee
Zhejiang Kaihua Mould 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 Zhejiang Kaihua Mould Co Ltd filed Critical Zhejiang Kaihua Mould Co Ltd
Priority to CN201710271429.8A priority Critical patent/CN106994766A/en
Publication of CN106994766A publication Critical patent/CN106994766A/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
    • B29C45/27Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701Details not specific to hot or cold runner channels
    • B29C45/2708Gates
    • 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
    • B29C45/0025Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29C45/27Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737Heating or cooling means 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
    • B29C45/26Moulds
    • B29C45/27Sprue channels ; Runner channels or runner nozzles
    • B29C45/28Closure devices therefor
    • B29C45/2806Closure devices therefor consisting of needle valve systems
    • B29C45/281Drive means 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
    • B29C45/4005Ejector constructions; Ejector operating mechanisms
    • B29C45/401Ejector pin constructions or mountings
    • 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
    • B29C45/27Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737Heating or cooling means therefor
    • B29C2045/2743Electrical heating element constructions
    • 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
    • B29C45/27Sprue channels ; Runner channels or runner nozzles
    • B29C45/28Closure devices therefor
    • B29C45/2806Closure devices therefor consisting of needle valve systems
    • B29C45/281Drive means therefor
    • B29C2045/2817Several valve pin drive cylinders connected to the fluid distributor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Deep chamber thick-walled plastic part fretting map injection mold, including upper, lower compound plate, main sprue bush is set in upper compound plate, upper compound plate divides into backing plate and divides into core, runner plate is set in core and divides into two or more point of sprue bush, perforation is opened in lower compound plate, support block is set on lower compound plate, set on lower compound plate between support block, lower ejector retainner plate and main thimble, injector push rod is in contact through perforation with lower ejector retainner plate, die cavity is set on support block, die cavity is formed between core and die cavity, there is injection-molded plastic part in die cavity, working of plastics is deep chamber working of plastics, working of plastics wall thickness is more than 3mm, it is characterized in that side gate processed between the core and die cavity, side gate one is connected with a point sprue bush, side gate other end in the middle part of the wall of working of plastics side with communicating, on, auxiliary thimble is set between lower ejector retainner plate to be in contact with the sizing material in side gate, runner plate top sets needle-valve oil cylinder with a point sprue bush opposite position, needle-valve oil cylinder connects needle-valve, needle-valve oil cylinder drives needle-valve to be engaged with a point sprue bush lower end.

Description

Deep chamber thick-walled plastic part fretting map injection mold
Technical field
The present invention relates to fretting map injection mold, more particularly to deep chamber thick-walled plastic part fretting map injection mold.
Background technology
In injection mold, in order to prevent the working of plastics of injection molding from shrinking, surface is caused to produce shrink mark, it will usually By the wall thickness control of working of plastics within 3mm, and in some fields(Such as the gadget of automobile)The wall thickness of customer requirement working of plastics must 3mm must be more than, therefore people have invented fretting map injection mold, i.e., by the injection nitrogen in the sizing material that barrel is stirred or Carbon dioxide, makes sizing material foam, in the sizing material injection mould after foaming, and being more than 3mm even if the wall thickness of working of plastics will not also occur Shrink, but because the sizing material flow of foaming is shorter, if die cavity is deeper, completely whole die cavity can not be flowed by causing the sizing material of foaming, from And influence formed product.
The content of the invention
Enter the invention aims to the shortcoming for overcoming prior art to exist there is provided a kind of in the middle part of the side wall of working of plastics Glue, the operation length of rubber foam is adapted, and the sizing material of foaming is filled whole die cavity, it is ensured that the deep chamber that product is normally molded Thick-walled plastic part fretting map injection mold.
The technical scheme of depth chamber thick-walled plastic part fretting map injection mold of the invention is:Including upper compound plate and lower compound plate, on Set to set to set in core, core under backing plate, backing plate under main sprue bush, upper compound plate in compound plate and set under runner plate, runner plate Two or more points of sprue bush are set, are provided with lower compound plate under being set on perforation, lower compound plate between support block, support block Upper ejector retainner plate, lower ejector retainner plate and main thimble are set on compound plate, and the push rod of injector is in contact through perforation with lower ejector retainner plate, in mould Die cavity is set on pin, the working of plastics for having injection molding in die cavity, die cavity is formed between core and die cavity, described working of plastics is deep Chamber working of plastics, the wall thickness of working of plastics is more than 3mm, it is characterised in that:Side gate is formed between described core and die cavity, side is poured Mouthful one with divide a sprue bush be connected, the other end of side gate with being communicated in the middle part of the wall of working of plastics side, upper and lower ejector retainner plate it Between auxiliary thimble is set, auxiliary thimble is in contact with the sizing material in side gate, described runner plate top position corresponding with point sprue bush Needle-valve oil cylinder is installed, needle-valve oil cylinder connection needle-valve, needle-valve oil cylinder drives needle-valve to be engaged with a point sprue bush lower end.
The invention discloses a kind of deep chamber thick-walled plastic part fretting map injection mold, be mainly characterized by core and die cavity it Between be formed with side gate, one of side gate communicates with a point sprue bush, side gate other end and the middle part of working of plastics side wall in die cavity Communicate, there is auxiliary thimble on upper and lower ejector retainner plate, needle-valve oil cylinder, needle-valve oil cylinder connection needle-valve, when mould enters are set on runner plate During row injection, needle-valve oil cylinder drives needle-valve to rise, and now side gate is communicated with a point sprue bush, and foamed plastic is through main sprue bush, stream Guidance tape, point sprue bush, side gate are flowed into the die cavity between core and die cavity, after foamed plastic fills whole die cavity, needle-valve Oil cylinder drive needle-valve blocks downwards the bottom of point sprue bush, the modeling that side gate is molded with the foamed plastic cooling in die cavity Materials and parts, now mould die sinking drives main thimble and auxiliary thimble by the upward ejection device of working of plastics by upper and lower ejector retainner plate.This programme Deep chamber thick-walled plastic part fretting map injection mold, by being formed with side gate, side gate and working of plastics side between core and die cavity Communicated in the middle part of wall, make die cavity depth and foamed plastic operation length be adapted so that foamed plastic can fill it is whole Individual die cavity, it is ensured that product is normally molded.
Depth chamber thick-walled plastic part fretting map injection mold of the invention, described main sprue bush and a point sprue bush outer wall is set respectively Put heating coil.There is heating coil, main sprue bush and a point sprue bush are heated by heating coil, are particularly being molded into During the working of plastics cooling of type and when mould is molded, the sizing material in main sprue bush and point sprue bush is set to keep heat to melt state.Institute The sizing material groove of triangle is formed respectively with the main thimble and auxiliary thimble stated.There is the sizing material groove of triangle, when mould is molded, glue Sizing material in hopper can hold the waste material in the working of plastics and side gate of injection molding, play position-limiting action to it, it is to avoid plastics Part and waste material are sticked on core, it is ensured that working of plastics can stay in die cavity side.
Brief description of the drawings
Fig. 1 is the matched moulds status architecture schematic diagram of deep chamber thick-walled plastic part fretting map injection mold;
Fig. 2 is the needle-valve and a point sprue bush mated condition structural representation of deep chamber thick-walled plastic part fretting map injection mold;
Fig. 3 is the die opening state structural representation of deep chamber thick-walled plastic part fretting map injection mold.
Embodiment
The present invention relates to a kind of deep chamber thick-walled plastic part fretting map injection mold, as shown in Fig. 1-Fig. 3, including upper compound plate 1 With lower compound plate 2, set in upper compound plate to set in core 5, core under setting backing plate 4, backing plate under main sprue bush 3, upper compound plate and set Two or more points of sprue bush 7 are set under runner plate 6, runner plate, is provided with perforation 8, lower compound plate and sets in lower compound plate 2 Put and upper ejector retainner plate 10, lower ejector retainner plate 11 and main thimble 12, the push rod 13 of injector are set on the lower compound plate between support block 9, support block It is in contact through perforation 8 with lower ejector retainner plate, die cavity 14 is set on support block, formed between core 5 and die cavity 14 in die cavity, die cavity There is the working of plastics 15 of injection molding, described working of plastics is deep chamber working of plastics, and the wall thickness of working of plastics is more than 3mm, and its feature exists In:Side gate 16 is formed between described core 5 and die cavity 14, one of side gate is connected with a point sprue bush 7, side gate Other end sets auxiliary thimble 17, auxiliary thimble and side with being communicated in the middle part of the side wall of working of plastics 15 between upper and lower ejector retainner plate 10,11 Sizing material in cast gate 16 is in contact, and the described top of runner plate 6 sets needle-valve oil cylinder 18, pin with point opposite position of sprue bush 7 Valve oil cylinder connects needle-valve 19, and needle-valve oil cylinder drives needle-valve to be engaged with a point sprue bush lower end.It is mainly characterized by core 5 and die cavity Side gate 16 is formed between 14, one of side gate communicates with a point sprue bush 7, the other end of side gate 16 and working of plastics 15 in die cavity Communicated in the middle part of the wall of side, have auxiliary thimble 17 on upper and lower ejector retainner plate 10,11, needle-valve oil cylinder 18, needle-valve are set on runner plate 6 Oil cylinder connects needle-valve 19, when mould is molded, and needle-valve oil cylinder drives needle-valve to rise, now side gate 16 and a point sprue bush 7 Communicate, the mould that foamed plastic is flowed between core 5 and die cavity 14 through main sprue bush 3, runner plate 6, point sprue bush 7, side gate 16 In chamber, after foamed plastic fills whole die cavity, needle-valve oil cylinder 18 drives the downward bottom for blocking point sprue bush 7 of needle-valve 19, The working of plastics 15 that side gate 16 is molded with the foamed plastic cooling in die cavity, now mould die sinking, by upper and lower ejector retainner plate 10th, 11 main thimble 12 and auxiliary thimble 17 are driven by the upward ejection device of working of plastics.This programme depth chamber thick-walled plastic part fretting map note Mould, by being formed with side gate 16 between core 5 and die cavity 14, side gate makes with being communicated in the middle part of the side wall of working of plastics 15 The depth of die cavity and the operation length of foamed plastic are adapted, so that foamed plastic can fill whole die cavity, it is ensured that product Normal shaping.Described main sprue bush 3 and point outer wall of sprue bush 7 sets heating coil 20 respectively.There is heating coil 20, by adding Heat coil is heated to main sprue bush 3 and a point sprue bush 7, is particularly when the working of plastics 15 of injection molding is cooled down and mould During die sinking, the sizing material in main sprue bush 3 and point sprue bush 7 is set to keep heat to melt state.Described main thimble 12 and auxiliary thimble 17 In be formed respectively with the sizing material groove 21 of triangle.There is the sizing material groove 21 of triangle, when mould is molded, the sizing material energy in sizing material groove The waste material in the working of plastics 15 and side gate 16 of injection molding is held, position-limiting action is played to it, it is to avoid working of plastics and waste material are viscous It is attached on core, it is ensured that working of plastics 15 can stay in the side of die cavity 14.

Claims (3)

1. deep chamber thick-walled plastic part fretting map injection mold, including upper compound plate(1)With lower compound plate(2), set master to pour in upper compound plate Muzzle(3), backing plate is set under upper compound plate(4), core is set under backing plate(5), runner plate is set in core(6), runner plate divides into Put two or more points of sprue bush(7), in lower compound plate(2)In be provided with perforation(8), support block is set on lower compound plate(9), mould Upper ejector retainner plate is set on the lower compound plate between pin(10), lower ejector retainner plate(11)With main thimble(12), the push rod of injector(13)Wear Cross perforation(8)It is in contact with lower ejector retainner plate, die cavity is set on support block(14), core(5)With die cavity(14)Between form die cavity, There is the working of plastics of injection molding in die cavity(15), described working of plastics is deep chamber working of plastics, and the wall thickness of working of plastics is more than 3mm, It is characterized in that:Described core(5)And die cavity(14)Between be formed with side gate(16), one and a point sprue bush of side gate (7)It is connected, the other end of side gate and working of plastics(15)Communicated in the middle part of the wall of side, in upper and lower ejector retainner plate(10、11)Between set Put auxiliary thimble(17), auxiliary thimble and side gate(16)In sizing material be in contact, described runner plate(6)Top and a point sprue bush (7)Opposite position sets needle-valve oil cylinder(18), needle-valve oil cylinder connection needle-valve(19), needle-valve oil cylinder drive needle-valve is with dividing a sprue bush Lower end is engaged.
2. depth chamber thick-walled plastic part fretting map injection mold as claimed in claim 1, it is characterised in that:Described main sprue bush (3)With a point sprue bush(7)Outer wall sets heating coil respectively(20).
3. depth chamber thick-walled plastic part fretting map injection mold as claimed in claim 1, it is characterised in that:Described main thimble (12)With auxiliary thimble(17)In be formed respectively with the sizing material groove of triangle(21).
CN201710271429.8A 2017-04-24 2017-04-24 Deep chamber thick-walled plastic part fretting map injection mold Pending CN106994766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710271429.8A CN106994766A (en) 2017-04-24 2017-04-24 Deep chamber thick-walled plastic part fretting map injection mold

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Application Number Priority Date Filing Date Title
CN201710271429.8A CN106994766A (en) 2017-04-24 2017-04-24 Deep chamber thick-walled plastic part fretting map injection mold

Publications (1)

Publication Number Publication Date
CN106994766A true CN106994766A (en) 2017-08-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109849285A (en) * 2018-12-26 2019-06-07 东莞广泽汽车饰件有限公司 A kind of injection forming mold of automobile cup holder panel
CN110341163A (en) * 2019-08-01 2019-10-18 安徽科蓝特铝业有限公司 A kind of automobile buffer beam extrusion molding mould
CN113183411A (en) * 2021-05-20 2021-07-30 苏州康尼格电子科技股份有限公司 Laminated mold and low-pressure glue injection method thereof
CN113561416A (en) * 2020-04-28 2021-10-29 惠州市耀盈精密技术有限公司 Injection mold

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201511498U (en) * 2009-09-25 2010-06-23 滨海模塑集团有限公司 Plastic die large-span hidden type gate
CN201609948U (en) * 2009-09-17 2010-10-20 汉达精密电子(昆山)有限公司 Automatic material-cutting and ejecting mechanism of plastic die gating
CN202037811U (en) * 2011-05-16 2011-11-16 昆明南疆制药有限公司 Valve pin type injection mold
CN206870278U (en) * 2017-04-24 2018-01-12 浙江凯华模具有限公司 Deep chamber thick-walled plastic part fretting map injection mold

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201609948U (en) * 2009-09-17 2010-10-20 汉达精密电子(昆山)有限公司 Automatic material-cutting and ejecting mechanism of plastic die gating
CN201511498U (en) * 2009-09-25 2010-06-23 滨海模塑集团有限公司 Plastic die large-span hidden type gate
CN202037811U (en) * 2011-05-16 2011-11-16 昆明南疆制药有限公司 Valve pin type injection mold
CN206870278U (en) * 2017-04-24 2018-01-12 浙江凯华模具有限公司 Deep chamber thick-walled plastic part fretting map injection mold

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109849285A (en) * 2018-12-26 2019-06-07 东莞广泽汽车饰件有限公司 A kind of injection forming mold of automobile cup holder panel
CN109849285B (en) * 2018-12-26 2023-09-29 东莞广泽汽车饰件有限公司 Injection molding die of automobile cup stand panel
CN110341163A (en) * 2019-08-01 2019-10-18 安徽科蓝特铝业有限公司 A kind of automobile buffer beam extrusion molding mould
CN113561416A (en) * 2020-04-28 2021-10-29 惠州市耀盈精密技术有限公司 Injection mold
CN113183411A (en) * 2021-05-20 2021-07-30 苏州康尼格电子科技股份有限公司 Laminated mold and low-pressure glue injection method thereof

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Application publication date: 20170801