CN110936551A - Plug-in assembly double-color injection molding process - Google Patents

Plug-in assembly double-color injection molding process Download PDF

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Publication number
CN110936551A
CN110936551A CN201910978076.4A CN201910978076A CN110936551A CN 110936551 A CN110936551 A CN 110936551A CN 201910978076 A CN201910978076 A CN 201910978076A CN 110936551 A CN110936551 A CN 110936551A
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CN
China
Prior art keywords
injection molding
product
tpr
abs plastic
color
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
CN201910978076.4A
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Chinese (zh)
Inventor
杨雪辉
黄辉勇
曾新发
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.)
Shenzhen Xingshengda Rubber Plastic Products Co Ltd
Original Assignee
Shenzhen Xingshengda Rubber Plastic Products 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 Shenzhen Xingshengda Rubber Plastic Products Co Ltd filed Critical Shenzhen Xingshengda Rubber Plastic Products Co Ltd
Priority to CN201910978076.4A priority Critical patent/CN110936551A/en
Publication of CN110936551A publication Critical patent/CN110936551A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76551—Time
    • B29C2945/76561—Time duration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76658—Injection unit
    • B29C2945/76668—Injection unit barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76732—Mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76859—Injection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76862—Holding, dwelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B29K2021/003—Thermoplastic elastomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
    • B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/36—Plugs, connectors, or parts thereof

Landscapes

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

Abstract

The invention discloses a plug-in assembly double-color injection molding process, which comprises the following steps: s1 raw material selection: selecting proper amounts of ABS plastics and TPR materials, respectively pouring the ABS plastics and the TPR materials into a screening machine, removing impurities and dust in the ABS plastics and the TPR materials through the screening machine, simultaneously removing metal particles mixed in the ABS plastics and the TPR materials through a magnetic separator, S2, drying raw materials: respectively putting ABS plastics and TPR materials into a dryer for drying, stirring while drying, and S3 injection molding: melting the dried ABS plastic by using a double-color injection molding machine, and injecting the melted ABS plastic into a mold cavity through a nozzle under high pressure; compared with other double-color injection molding processes, the invention has the advantages of low technical price, space saving, mature process, stress resistance, cost reduction, scrap rate reduction and great improvement on the use quality and quality of products.

Description

Plug-in assembly double-color injection molding process
Technical Field
The invention relates to the technical field of injection molding, in particular to a plug-in assembly double-color injection molding process.
Background
The double-color plastic molding process is a molding process in which two different materials are injected into the same set of mold, so that an injected part is formed by the two materials. Some two materials are different in color, and some materials are different in hardness, so that the aesthetic property, the assembly performance and other performances of the product are improved, the molded plastic product has color separation, color mixing or irregular patterns, and the appearance effect cannot be obtained by common injection molding and surface decoration. The alternating of the plasticized melt in the two injection molding machines with the same specification is completed by the injection of the nozzle, and is controlled by the action of a program control valve between a plasticizing machine barrel and the nozzle, and generally, the double-shot injection molding is also required in the production of the plug-in assembly.
However, the existing insert assembly two-color injection molding process has the following disadvantages in actual operation, and during injection molding, the raw materials contain dust and impurities, so that the molded finished product is brittle or has lines, which not only affects the use effect of the product, but also reduces the quality of the product.
Disclosure of Invention
The invention aims to provide a plug-in assembly double-color injection molding process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a plug-in assembly double-color injection molding process comprises the following steps:
s1, selecting raw materials: selecting proper amounts of ABS plastic and TPR materials, respectively pouring the ABS plastic and TPR materials into a screening machine, removing impurities and dust in the ABS plastic and TPR materials through the screening machine, simultaneously removing metal particles mixed in the ABS plastic and TPR materials through a magnetic separator,
s2, drying raw materials: the ABS plastic and the TPR material are respectively put into a drier for drying and stirring at the same time of drying,
s3, injection molding: melting the dried ABS plastic by a double-color injection molding machine, injecting the melted ABS plastic into a mold cavity through a nozzle under high pressure, maintaining the pressure for 20-60 seconds, cooling to 65-75 ℃, curing to form a first-color product, periodically opening the mold, keeping the first-color product in a male mold, rotating a movable mold plate of the molding machine for 180 degrees to close the mold, melting the dried TPR material, injecting the melted TPR material into the mold cavity through the nozzle under high pressure, maintaining the pressure for 15-30 seconds,
s4, cooling: the cooling time is set according to the thickness of the product, the standard of the cooling time setting is that the cooling of the product after the product is demoulded is set on the basis of no shrinkage, the coolant passes through the cooling hole on the precision injection mould to cool the raw material in the mould cavity,
s5, demolding: after the cooling stage, the mold is opened, the ejector rod is ejected out by the ejector device on the forming machine, the product is pushed out, and the assembly of the double-color plug-in components is obtained,
s6, post-processing: the product is polished, cleaned and cleaned to ensure the smoothness of the appearance,
s7, packaging: and packaging the post-processed product by using a packaging machine.
Preferably, wherein the TPR material has a melting temperature lower than the melting temperature of the ABS plastic.
Preferably, the temperature of the mold is 40-80 ℃, the injection pressure is 70-120 Mpa, the injection time is 3-5S, the pressure maintaining pressure is 50-70 Mpa, and the cooling time is 15-50S.
Preferably, the temperature of the charging barrel in the injection molding process is 180-230 ℃.
Preferably, the drying time in step S2 is 30min, and the drying temperature is 80 ℃.
Preferably, the finished product is checked for 100% to distinguish whether the product is good or bad.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, impurities and dust in the ABS plastic and TPR material can be effectively removed by carrying out impurity removal treatment on the ABS plastic and TPR material, the cleanliness of the ABS plastic and TPR material is ensured, the condition that the plug-in assembly is crisp or has lines is avoided, and the quality of the plug-in assembly can be ensured.
2. According to the invention, the ABS plastic and the TPR material are used as raw materials, the hardness of the ABS plastic is slightly high, the hardness of the TPR material is slightly low, the ABS plastic and the TPR material are not required to be bonded through an adhesive at normal temperature, the ABS plastic and the TPR material are not easy to fall off, and the product quality is greatly improved.
3. Compared with other double-color injection molding processes, the invention has the advantages of low technical price, space saving, mature process, stress resistance, cost reduction, scrap rate reduction and great improvement on the use quality and quality of products.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A plug-in assembly double-color injection molding process comprises the following steps:
s1, selecting raw materials: selecting proper amounts of ABS plastic and TPR materials, respectively pouring the ABS plastic and TPR materials into a screening machine, removing impurities and dust in the ABS plastic and TPR materials through the screening machine, simultaneously removing metal particles mixed in the ABS plastic and TPR materials through a magnetic separator,
s2, drying raw materials: the ABS plastic and the TPR material are respectively put into a drier for drying and stirring at the same time of drying,
s3, injection molding: melting the dried ABS plastic by a double-color injection molding machine, injecting the melted ABS plastic into a mold cavity through a nozzle under high pressure, maintaining the pressure for 20-60 seconds, cooling to 65-75 ℃, curing to form a first-color product, periodically opening the mold, keeping the first-color product in a male mold, rotating a movable mold plate of the molding machine for 180 degrees to close the mold, melting the dried TPR material, injecting the melted TPR material into the mold cavity through the nozzle under high pressure, maintaining the pressure for 15-30 seconds,
s4, cooling: the cooling time is set according to the thickness of the product, the standard of the cooling time setting is that the cooling of the product after the product is demoulded is set on the basis of no shrinkage, the coolant passes through the cooling hole on the precision injection mould to cool the raw material in the mould cavity,
s5, demolding: after the cooling stage, the mold is opened, the ejector rod is ejected out by the ejector device on the forming machine, the product is pushed out, and the assembly of the double-color plug-in components is obtained,
s6, post-processing: the product is polished, cleaned and cleaned to ensure the smoothness of the appearance,
s7, packaging: and packaging the post-processed product by using a packaging machine.
From the various embodiments above, it is known that: compared with other double-color injection molding processes, the invention has the advantages of low technical price, space saving, mature process, stress resistance, cost reduction, scrap rate reduction and great improvement on the use quality and quality of products.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The two-color injection molding process for assembling the plug-in is characterized by comprising the following steps of: the method comprises the following steps:
s1, selecting raw materials: selecting proper amounts of ABS plastic and TPR materials, respectively pouring the ABS plastic and TPR materials into a screening machine, removing impurities and dust in the ABS plastic and TPR materials through the screening machine, simultaneously removing metal particles mixed in the ABS plastic and TPR materials through a magnetic separator,
s2, drying raw materials: the ABS plastic and the TPR material are respectively put into a drier for drying and stirring at the same time of drying,
s3, injection molding: melting the dried ABS plastic by a double-color injection molding machine, injecting the melted ABS plastic into a mold cavity through a nozzle under high pressure, maintaining the pressure for 20-60 seconds, cooling to 65-75 ℃, curing to form a first-color product, periodically opening the mold, keeping the first-color product in a male mold, rotating a movable mold plate of the molding machine for 180 degrees to close the mold, melting the dried TPR material, injecting the melted TPR material into the mold cavity through the nozzle under high pressure, maintaining the pressure for 15-30 seconds,
s4, cooling: the cooling time is set according to the thickness of the product, the standard of the cooling time setting is that the cooling of the product after the product is demoulded is set on the basis of no shrinkage, the coolant passes through the cooling hole on the precision injection mould to cool the raw material in the mould cavity,
s5, demolding: after the cooling stage, the mold is opened, the ejector rod is ejected out by the ejector device on the forming machine, the product is pushed out, and the assembly of the double-color plug-in components is obtained,
s6, post-processing: the product is polished, cleaned and cleaned to ensure the smoothness of the appearance,
s7, packaging: and packaging the post-processed product by using a packaging machine.
2. The insert assembly two-color injection molding process according to claim 1, wherein: wherein the TPR material has a melting temperature lower than the melting temperature of the ABS plastic.
3. The insert assembly two-color injection molding process according to claim 1, wherein: wherein the temperature of the mold is 40-80 ℃, the injection pressure is 70-120 Mpa, the glue injection time is 3-5S, the pressure maintaining pressure is 50-70 Mpa, and the cooling time is 15-50S.
4. The insert assembly two-color injection molding process according to claim 1, wherein: wherein the temperature of the charging barrel in the injection molding process is 180-230 ℃.
5. The insert assembly two-color injection molding process according to claim 4, wherein: wherein the drying time is 30min and the drying temperature is 80 ℃ in step S2.
6. The insert assembly two-color injection molding process according to claim 1, wherein: wherein, the finished product is checked for 100 percent to distinguish whether the finished product is good or bad.
CN201910978076.4A 2019-10-15 2019-10-15 Plug-in assembly double-color injection molding process Pending CN110936551A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111716638A (en) * 2020-06-25 2020-09-29 徐青 Injection molding process based on double mixed color injection molding machine
CN113492491A (en) * 2021-06-07 2021-10-12 常州市佳乐车辆配件制造有限公司 Dial plate double-color injection molding process for automobile air conditioner grille

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1507997A (en) * 2002-12-18 2004-06-30 东莞翊凯电器制品有限公司 Plastic product with rubber surface and manufacturing method thereof
CN109664460A (en) * 2018-12-26 2019-04-23 苏州敏煌精密电子科技有限公司 A kind of injection molding process of precise injection mould

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1507997A (en) * 2002-12-18 2004-06-30 东莞翊凯电器制品有限公司 Plastic product with rubber surface and manufacturing method thereof
CN109664460A (en) * 2018-12-26 2019-04-23 苏州敏煌精密电子科技有限公司 A kind of injection molding process of precise injection mould

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111716638A (en) * 2020-06-25 2020-09-29 徐青 Injection molding process based on double mixed color injection molding machine
CN113492491A (en) * 2021-06-07 2021-10-12 常州市佳乐车辆配件制造有限公司 Dial plate double-color injection molding process for automobile air conditioner grille

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Application publication date: 20200331

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