CN105729733B - The molding die of SMC products - Google Patents

The molding die of SMC products Download PDF

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Publication number
CN105729733B
CN105729733B CN201610275546.7A CN201610275546A CN105729733B CN 105729733 B CN105729733 B CN 105729733B CN 201610275546 A CN201610275546 A CN 201610275546A CN 105729733 B CN105729733 B CN 105729733B
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CN
China
Prior art keywords
injection
die
mold
runner
seat
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Application number
CN201610275546.7A
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Chinese (zh)
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CN105729733A (en
Inventor
王少峰
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.)
NINGBO CITY EPL MOULD & PLASTIC Co Ltd
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NINGBO CITY EPL MOULD & PLASTIC 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.)
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Application filed by NINGBO CITY EPL MOULD & PLASTIC Co Ltd filed Critical NINGBO CITY EPL MOULD & PLASTIC Co Ltd
Priority to CN201610275546.7A priority Critical patent/CN105729733B/en
Publication of CN105729733A publication Critical patent/CN105729733A/en
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Publication of CN105729733B publication Critical patent/CN105729733B/en
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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
    • B29C45/32Moulds having several axially spaced mould cavities, i.e. for making several separated 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
    • B29C45/0001Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • 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
    • B29C45/1703Introducing an auxiliary fluid into the mould
    • B29C45/1734Nozzles 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
    • B29C45/72Heating or cooling
    • B29C45/74Heating or cooling of the injection unit
    • 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
    • B29C45/1703Introducing an auxiliary fluid into the mould
    • B29C45/1734Nozzles therefor
    • B29C2045/1737Pin-in-sleeve devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2309/00Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08Glass

Abstract

The invention discloses a kind of molding die of SMC injection-molded items, including upper die component, lower mold assemblies and the guiding mechanism for connecting upper die component and lower mold assemblies, the die cavity of SMC products is formed after upper die component and lower mold assemblies molding;The die cavity is a mould scene 2, and is connected to by runner between two die cavitys;Injection device is equipped in lower mold assemblies between two die cavitys, the discharge port of injection device is connected to runner;The envelope material device for sealing the runner of discharge outlet is equipped in lower mold assemblies below runner.After using the above structure, artificial cost can be both saved, moreover it is possible to the molding cycle for greatly shortening product, to greatly improve production efficiency.

Description

The molding die of SMC products
Technical field
The present invention relates to the technical fields of mold, are especially a kind of molding die of SMC products.
Background technology
SMC composite materials are one kind of fiberglass, and primary raw material is by GF (special yarn), MD (filler) and various auxiliary agent groups At.The SMC products made of SMC material have excellent electrical insulation capability, mechanical performance, thermal stability, chemically-resistant anti-corrosive properties, Therefore its application range is quite extensive, mainly there is automobile motor cover, mud guard, foot pedal etc., and these SMC products are usual It is produced by molding die.The molding die of traditional SMC products is hot pressing die, it includes dynamic model and cover half, It is equipped with ejecting mechanism in middle dynamic model, when work is put into SMC sheet in hot pressing die, then makes SMC sheet by electric-heating-wire-heating Melt, curing molding after being cooled down using high pressure finally takes out product.The Publication No. as disclosed on National IP Network station " SMC heat pressing and molding molds " patent of CN101733891B, it includes shape after upper die and lower die and upper die and lower die molding At die cavity, the die cavity is provided with the forming surface of shaped article, and the upper mold or lower die, which are provided with, keeps the forming surface heated Uniform heating system, the heating system are evenly distributed on the molding position of the upper die and lower die, and the heating system is water Well, well are by realizing operating temperature in water of connecting.
But the molding die of above-mentioned this traditional SMC products but with the following drawback that:
1) due to many heating wells of having arranged in upper mold or lower die, the processing of one side mold is extremely difficult, Increase production cost, on the other hand reduces the intensity of mold, cause the shortening of service life;
2) such as attached in addition, the process that this SMC sheet cools and solidifies again after melting in mold, molding cycle is longer SMC products shown in Fig. 1, molding cycle each substantially at 3 minutes or so, therefore, reduce production efficiency.
Invention content
The technical problem to be solved by the invention is to provide a kind of simple in structure, at low cost, and production can be greatly improved The molding die of the SMC products of efficiency.
In order to solve the above technical problems, the molding die of SMC products provided by the invention, including upper die component, lower module SMC products are formed after part and the guiding mechanism for connecting upper die component and lower mold assemblies, upper die component and lower mold assemblies molding Die cavity;The die cavity is a mould scene 2, and is connected to by runner between two die cavitys;Lower mold assemblies between two die cavitys Interior to be equipped with injection device, the discharge port of injection device is connected to runner;It is equipped in lower mold assemblies below runner for that will discharge The envelope material device of runner sealing at mouthful.The runner includes that the sprue of vertical direction and two respectively lead to two The runner of the horizontal direction of die cavity, two runners are connected to the upper end of sprue respectively, and lower end and the injection of sprue fill The discharge port connection set.The lower mold assemblies include mold cores, lower mold fixed plate and injection seat, and sprue is located at mould type In the upper end of core, the lower end of mold cores is fixedly connected in lower mold fixed plate;Injection seat is located in mold cores, in injection seat Equipped with the injection flow passage communicated with sprue;The upper angled of the injection device is set to mold cores and lower mold fixed plate It is interior, and the discharge tip in injection device is located in injection seat while being communicated with injection flow passage;The envelope expects the upper of device Portion is vertically arranged in mold cores and lower mold fixed plate, and the mandril upper end sealed in material device is slidably fitted in injection flow passage It is interior, simultaneously switch off or be connected to the discharging of discharge tip.
Injection material set is equipped in the injection seat, injection material, which is locked, to be fitted in injection seat, and the upper end of injection material set It connect and communicates with sprue;The discharge tip of injection device is set on the side wall of injection material set, and the upper end of mandril is slidably matched In injection material set.
Circumferential position limiting structure is equipped between the injection material set and injection seat, which includes positioning pin, The positioning pin also injection material set and injection seat grafting simultaneously.
The injection device further includes barrel, injection head, melting material mechanism and pressing mechanism, and one end of injection head is connected to It is connected in injection seat and with injection flow passage, one end connection of the other end and barrel, the other end and melting material mechanism and the pressurization of barrel Mechanism connects.
The injection device further includes cooling body, which includes cooling cover, water inlet pipe and return pipe, cold But sleeve be socketed in barrel and a part injection head outside, one end of water inlet pipe be connected to the upper end of cooling cover, the other end and Cooling water source is connected to, and the lower end of return pipe and cooling cover connects.
Envelope material device further includes drive cylinder, material set bearing, the bottom of the upper end and injection material set of the material set bearing It pushes against, lower end is fixedly connected with drive cylinder, and the mandril in envelope material device is located in material set bearing.
After using the above structure, compared with prior art, the present invention having the following advantages that:
1) since this mold uses the structure of a mould scene 2, the production efficiency of SMC products is made to be doubled;Meanwhile It is additionally arranged injection device and envelope material device in mold, so that SMC material is injected by way of injection in the die cavity of mold, both may be used To save artificial cost, moreover it is possible to greatly shorten the molding cycle of product, product as shown in Fig. 1, from the 3 of the prior art Minute can shorten to 70 seconds, to greatly improve production efficiency;
2) heating well channel simple and compact for structure in mold, not numerous, to simplify the difficulty of processing of part, It further reduces the cost, while also improving the structural strength of mold;
3) it is provided with cooling body on injection device, is because when starting material feeding in barrel, the temperature of material there are 150 DEG C of left sides The temperature on the right side, such barrel can also increase, to influence its service life and performance, it is therefore desirable to which cooling body leads in barrel Water is cooled down;
4) setting of positioning pin is to generate skidding between injection material set and injection seat in order to prevent, to ensure discharging spray Mouth can be more accurately connected to the injection canal in injection seat always;
5) mandril being slidably matched in injection material set enables injection to complete pushing rod and up ejects, in this way can be going out Material nozzle is blocked.
Description of the drawings
Fig. 1 is the design of part schematic diagram of SMC products.
Fig. 2 be SMC products of the present invention molding die in part-structure schematic diagram.
Fig. 3 is the structural schematic diagram of the molding die of SMC products of the present invention.
Fig. 4 is the enlarged structure schematic diagram in the portions A in Fig. 3.
Wherein, 1, sprue;2, runner;3, injection material set;4, injection seat;5, injection head;6, cooling cover;7, material set Bearing;8, drive cylinder;9, mold cores;10, barrel;11, water inlet pipe;12, return pipe;13, discharge tip;14, injected current Road;15, mandril;16, lower mold fixed plate;17, positioning pin.
Specific implementation mode
Present invention will be explained in further detail with reference to the accompanying drawings and detailed description.
By Fig. 1~SMC products of the present invention shown in Fig. 4 molding die structural schematic diagram it is found that it includes upper module It is formed after part, lower mold assemblies and the guiding mechanism for connecting upper die component and lower mold assemblies, upper die component and lower mold assemblies molding The die cavity of SMC products.The die cavity is a mould scene 2, and is connected to by runner between two die cavitys.Between two die cavitys Lower mold assemblies in be equipped with injection device, the discharge port of injection device is connected to runner.It is equipped in lower mold assemblies below runner Envelope material device for sealing the runner of discharge outlet.
The runner includes the sprue 1 and two horizontal directions for respectively leading to two die cavitys of a vertical direction Runner 2, two runners 2 are connected to the upper end of sprue 1 respectively, and the lower end of sprue 1 and the discharge port of injection device connect It is logical.
The lower mold assemblies include mold cores 9, lower mold fixed plate 16 and injection seat 4, and sprue 1 is located at mold cores In 9 upper end, the lower end of mold cores 9 is fixedly connected in lower mold fixed plate 16.Injection seat 4 is located in mold cores 9, injection The injection flow passage 14 communicated with sprue 1 is equipped in seat 4.The upper angled of the injection device is set to 9 He of mold cores Discharge tip 13 in lower mold fixed plate 16, and in injection device is located in injection seat 4 while being communicated with injection flow passage 14.Institute The Upper vertical for the envelope material device stated is set in mold cores 9 and lower mold fixed plate 16, and seals the mandril 15 in material device Upper end is slidably fitted in injection flow passage 14, simultaneously switches off or be connected to the discharging of discharge tip 13.
It is equipped with injection material in the injection seat 4 and covers 3, injection material covers 3 close-fittings in injection seat 4, and injection material set 3 Upper end connect and communicates with sprue 1.The discharge tip 13 of injection device be set to injection material set 3 side wall on, mandril 15 it is upper End is slidably fitted in injection material set 3.
Circumferential position limiting structure is equipped between the injection material set 3 and injection seat 4, which includes positioning pin 17, the positioning pin 17 also injection material set 3 and 4 grafting of injection seat simultaneously.
The injection device further includes barrel 10, injection head 5, melting material mechanism and pressing mechanism, and one end of injection head 5 connects It is connected in injection seat 4 and is connected to injection flow passage 14, the other end is connect with one end of barrel 10, the other end and melting material of barrel 10 Mechanism is connected with pressing mechanism.
The injection device further includes cooling body, which includes cooling cover 6, water inlet pipe 11 and return pipe 12, cooling cover 6 is socketed in outside barrel 10 and the injection head 5 of a part, and one end of water inlet pipe 11 connects with the upper end of cooling cover 6 Logical, the other end is connected to cooling water source, and return pipe 12 is connect with the lower end of cooling cover 6.
Envelope material device further includes drive cylinder 8, expects set bearing 7, and the upper end of the material set bearing 7 covers 3 with injection material Bottom pushes against, and lower end is fixedly connected with drive cylinder 8, and the mandril 15 in envelope material device is located in material set bearing 7.
The course of work of molding die of the present invention is as follows:Before starting injection, drive cylinder 8 first retracts mold, drives top Bar 15 also retracts;At this point, the heating mechanism of injection device first melts SMC sheet, then by pressing mechanism by melting state SMC material injection in barrel 10 enters note after passing sequentially through injection head 5, the injection canal in injection seat 4, discharge tip 13 Injection flow passage 14 in shooting set 3, then enter two die cavitys from two runners 2 respectively after reaching sprue 1;When in die cavity After expecting that injection fillers are complete, drive cylinder 8 starts to eject, and mandril 15 is driven up to eject, until sealing discharge tip 13, in this way Shot process can be completed the tapping channel of material to blocking.
The above is only preferably feasible implementation example of the invention, cannot therefore be the interest field for limiting to the present invention, For those skilled in the art, other all made with technical scheme of the present invention and technical concept are various corresponding Change should all belong within the protection domain of the claims in the present invention.

Claims (6)

1. a kind of molding die of SMC products, including upper die component, lower mold assemblies and connection upper die component and lower mold assemblies The die cavity of SMC products is formed after guiding mechanism, upper die component and lower mold assemblies molding;It is characterized in that:The die cavity is one Mould scene 2, and be connected to by runner between two die cavitys;Injection device, injection are equipped in lower mold assemblies between two die cavitys The discharge port of device is connected to runner;The envelope material for sealing the runner of discharge outlet is equipped in lower mold assemblies below runner Device;The runner includes the sprue (1) and two horizontal directions for respectively leading to two die cavitys of a vertical direction Runner (2), two runners (2) are connected to the upper end of sprue (1) respectively, the lower end of sprue (1) and injection device Discharge port is connected to;The lower mold assemblies include mold cores (9), lower mold fixed plate (16) and injection seat (4), sprue (1) In the upper end of mold cores (9), the lower end of mold cores (9) is fixedly connected in lower mold fixed plate (16);Injection seat (4) In mold cores (9), the injection flow passage (14) communicated with sprue (1) is equipped in injection seat (4);The injection device Upper angled be set in mold cores (9) and lower mold fixed plate (16), and discharge tip (13) position in injection device It is communicated in injection seat (4) while with injection flow passage (14);The Upper vertical of the envelope material device is set to mold cores (9) It is interior with lower mold fixed plate (16), and mandril (15) upper end sealed in material device is slidably fitted in injection flow passage (14), simultaneously Disconnect or be connected to the discharging of discharge tip (13).
2. the molding die of SMC products according to claim 1, it is characterised in that:Note is equipped in the injection seat (4) Shooting set (3), injection material set (3) close-fitting is in injection seat (4), and the upper end of injection material set (3) is connect simultaneously with sprue (1) It communicates;The discharge tip (13) of injection device is set on the side wall of injection material set (3), and the upper end of mandril (15) is slidably fitted in note In shooting set (3).
3. the molding die of SMC products according to claim 2, it is characterised in that:The injection material set (3) and injection Circumferential position limiting structure is equipped between seat (4), which includes positioning pin (17), the positioning pin (17) while also being injected Material set (3) and injection seat (4) grafting.
4. the molding die of SMC products according to claim 1, it is characterised in that:The injection device further includes material One end of cylinder (10), injection head (5), melting material mechanism and pressing mechanism, injection head (5) be connected in injection seat (4) and with injection Runner (14) is connected to, and the other end is connect with the one end of barrel (10), the other end and melting material mechanism and the pressing mechanism of barrel (10) Connection.
5. the molding die of SMC products according to claim 4, it is characterised in that:The injection device further includes cold But mechanism, the cooling body include cooling cover (6), water inlet pipe (11) and return pipe (12), and cooling cover (6) is socketed in barrel (10) and a part injection head (5) outside, one end of water inlet pipe (11) is connected to the upper end of cooling cover (6), the other end with it is cold But water source is connected to, and return pipe (12) is connect with the lower end of cooling cover (6).
6. the molding die of SMC products according to claim 2, it is characterised in that:Envelope material device further includes drive cylinder (8), material set bearing (7), the material cover the upper end of bearing (7) and are pushed against with the bottom of injection material set (3), lower end and drive cylinder (8) it is fixedly connected, the mandril (15) in envelope material device is located in material set bearing (7).
CN201610275546.7A 2016-04-27 2016-04-27 The molding die of SMC products Active CN105729733B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610275546.7A CN105729733B (en) 2016-04-27 2016-04-27 The molding die of SMC products

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Application Number Priority Date Filing Date Title
CN201610275546.7A CN105729733B (en) 2016-04-27 2016-04-27 The molding die of SMC products

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CN105729733A CN105729733A (en) 2016-07-06
CN105729733B true CN105729733B (en) 2018-08-14

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478227A (en) * 1993-10-29 1995-12-26 Ykk Corporation Vertical injection molding machine having a discharge material receiving device
CN201432392Y (en) * 2009-06-02 2010-03-31 张欢庆 One-mold heterogenic cavity passage lock of injection mold
CN102241111A (en) * 2011-06-16 2011-11-16 凡嘉科技(无锡)有限公司 Mold structure with glue-feeding rear mold
CN203665849U (en) * 2014-01-04 2014-06-25 宁波龙韵电器有限公司 Injection nozzle of injection mold
CN204914395U (en) * 2015-07-13 2015-12-30 广东伟达塑机工业有限公司 Mould feed mechanism of inclined injection molding machine
CN205572921U (en) * 2016-04-27 2016-09-14 宁波市益普乐模塑有限公司 SMC injection molding's forming die

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478227A (en) * 1993-10-29 1995-12-26 Ykk Corporation Vertical injection molding machine having a discharge material receiving device
CN201432392Y (en) * 2009-06-02 2010-03-31 张欢庆 One-mold heterogenic cavity passage lock of injection mold
CN102241111A (en) * 2011-06-16 2011-11-16 凡嘉科技(无锡)有限公司 Mold structure with glue-feeding rear mold
CN203665849U (en) * 2014-01-04 2014-06-25 宁波龙韵电器有限公司 Injection nozzle of injection mold
CN204914395U (en) * 2015-07-13 2015-12-30 广东伟达塑机工业有限公司 Mould feed mechanism of inclined injection molding machine
CN205572921U (en) * 2016-04-27 2016-09-14 宁波市益普乐模塑有限公司 SMC injection molding's forming die

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