CN109702948A - Mold is used in a kind of compression molding of thermoplastic polyurethane elastomer - Google Patents
Mold is used in a kind of compression molding of thermoplastic polyurethane elastomer Download PDFInfo
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- CN109702948A CN109702948A CN201811564887.1A CN201811564887A CN109702948A CN 109702948 A CN109702948 A CN 109702948A CN 201811564887 A CN201811564887 A CN 201811564887A CN 109702948 A CN109702948 A CN 109702948A
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- type chamber
- lower die
- mold
- thermoplastic polyurethane
- compression molding
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Abstract
A kind of thermoplastic polyurethane elastomer compression molding mold, comprising: upper mold (1), mold core (2), lower die (3)；Mold core (2) includes profiled body structure, rectangle locating piece (13), handle (12)；Upper mold (1) includes the first type chamber (9), locating slot (5), positioning column (4)；Lower die (3) includes second type chamber (10), locating slot (5), location hole (6), seal groove (7), sealing joint strip (8), locating clip (14)；On touch (1) and lower die (3) molding after, the inner surface of first type chamber (9) and second type chamber (10) is consistent with profiled body structure outer profile, and the locating slot (5) for above touching (1) and lower die (3) is consistent with rectangle locating piece (13) profile.The present invention solves the technical issues of product stripping difficulty and spue line cracking, provides a kind of with easy mold release, the molding die being pressed and molded suitable for thermoplastic elastic material.
Description
Technical field
The present invention relates to rubber, elastomeric material compression molding die technical field, are related to a kind of mold for forming.
Background technique
Thermoplastic polyurethane is a kind of elastomeric material between rubber and plastics.Due to its brilliant draftability
Energy, wear-resisting property, flexible resistance energy, lower temperature resistance and oil resistivity, be widely used in auto industry, various footwear material apparel industries and
Aerospace field.
Thermoplastic polyurethane product at present mostly uses greatly injection, rotational moulding, dips in the production of the techniques such as modeling, but for thin-wall curved-surface
The product of structure, conventional process there are sizes it is uneven, bubble is more the problems such as, rubber product need to be used for reference using hot-forming skill
Art.But due to the operational characteristic of thermoplastic polyurethane, there is the problems such as difficult demoulding, die joint cracking in traditional moulds.
TPU compression molding principle is that material filling is pre-heated to the mould of high temperature using TPU material thermoplastic feature
Tool, then molding pressurization, material quickly fill with type chamber under pressure, obtain and the similar system of cavity dimension after cooling
Product.During compression molding, thermoplastic material generates flowing due to heated, and redundant rubber stock is overflowed from mold die joint, simultaneously
Material is cooled and shaped, and the competition of two kinds of trend is so that spue line part material is in active state, thus product spue line position
It is easy to appear cracking phenomenas.In addition, thermoplastic polyurethane elastomer and metal material have stronger adhesion strength, lead to product
It demoulds extremely difficult.
Summary of the invention
The technical problems to be solved by the present invention are: overcome the deficiencies in the prior art, solves product stripping difficulty and closes
The technical issues of loft cracks provides a kind of with easy mold release, the molding mould being pressed and molded suitable for thermoplastic elastic material
Tool.
The technical scheme adopted by the invention is that: a kind of thermoplastic polyurethane elastomer compression molding mold, comprising: on
Mould, mold core, lower die；
The mold core includes profiled body structure, rectangle locating piece, handle；Profiled body structure one end connects handle, and
Rectangle locating piece is being set at endface position；
The upper mold includes the first type chamber, locating slot, positioning column；On touch lower surface the first type chamber, the first type chamber week be set
Several positioning columns of distribution are enclosed, locating slot is arranged in the first type chamber at proximal port；
The lower die includes second type chamber, locating slot, location hole, seal groove, sealing joint strip, locating clip；Lower die upper surface
Second type chamber is set, and second type chamber sets gradually locating slot, locating clip from from port position；In the die joint of second type chamber
It is provided with seal groove on contour line, sealing joint strip is installed in seal groove；Several location holes, each location hole are distributed around second type chamber
Position it is corresponding with the position of positioning column.
It is touched on described after being molded with lower die, the inner surface and profiled body structure outer profile one of the first type chamber and second type chamber
It causes, above touches consistent with rectangle locating piece profile with the locating slot of lower die.
The die joint of the first type chamber, second type chamber and mold core is coated with teflon plate.
The sealing joint strip is heat vulcanized silicone rubber, fluorubber or other tartans.
The section of the seal groove is rectangular or T-type, and the section of sealing joint strip is O-shaped or rectangle；Wherein, T-type seal groove
Cooperate rectangular seal adhesive tape, quad seal slot cooperates O-shaped sealing joint strip.
The advantages of the present invention over the prior art are that:
(1) present invention uses polytetrafluoroethylene (PTFE) (Teflon) anti-sticking coating, and product surface obtained is smooth, no current mark, gas
Hole, thickness are uniform, the features such as gasproof Compressive Strength height；Mold uses sealing structure, and resulting product spue line position overlap is thin, material
It has excellent performance, intensity height.
(2) for the present invention in material compression molding by mould pressurizing, it is real that sealing joint strip generation compression generates interference fit
Existing upper and lower mould land area fits closely, to be made, product size is uniform, surface is smooth, quality is stable, easily demoulding thermoplastic
Property polyurethane molded article.
Detailed description of the invention
Fig. 1 is that thermoplastic elastomer (TPE) is pressed and molded upper mold schematic diagram；
Fig. 2 is mould core schematic diagram；
Fig. 3 is lower die schematic diagram；
Fig. 4 is lower die T-type seal groove, rectangular seal adhesive tape assembling schematic diagram；
Fig. 5 is lower die square type seal groove, O shape sealing joint strip assembling schematic diagram.
Fig. 6 is the structure chart of mold.
Specific embodiment
It is described in further detail with reference to the accompanying drawings and embodiments.
A kind of thermoplastic elastomer (TPE) compression molding die, as shown in Figure 6, comprising: upper mold 1, mold core 2, lower die 3；
As shown in Fig. 2, mold core 2 includes profiled body structure, rectangle locating piece 13, handle 12；Profiled body structure one end
Handle 12 is connected, and rectangle locating piece 13 is being set at endface position；
As shown in Figure 1, upper mold 1 includes the first type chamber 9, locating slot 5, positioning column 4；On touch 1 lower surface be arranged the first type chamber
9,9 surrounding of the first type chamber is distributed several positioning columns 4, and locating slot 5 is arranged in the first type chamber 9 at proximal port；
As shown in figure 3, lower die 3 includes second type chamber 10, locating slot 5, location hole 6, seal groove 7, sealing joint strip 8, positioning
Folder 14；Second type chamber 10 is arranged in 3 upper surface of lower die, and second type chamber 10 sets gradually locating slot 5, positioning from close port position
Folder 14；It is provided with seal groove 7 on the die joint contour line of second type chamber 10, sealing joint strip 8 is installed in seal groove 7；Second type
10 surrounding of chamber is distributed several location holes 6, and the position of each location hole 6 is corresponding with the position of positioning column 4.
On touch 1 and after lower die 3 molds, the inner surface of the first type chamber 9 and second type chamber 10 and profiled body structure outer profile
Unanimously, above touch 1 and lower die 3 locating slot 5 it is consistent with 13 profile of rectangle locating piece.
The die joint of first type chamber 9, second type chamber 10 and mold core 2 is coated with teflon plate.
Sealing joint strip 8 is heat vulcanized silicone rubber, fluorubber or other tartans.Material passes through when being pressed and molded
Mould pressurizing, sealing joint strip generates compression generation interference fit and realizes that upper and lower mould land area fits closely, so that product ruler be made
It is very little uniformly, surface is smooth, quality is stable, easily demoulding thermoplastic polyurethane molded article.
As shown in Figure 4, Figure 5, to guarantee effectively sealing, 7 section of seal groove is designed as rectangular or T-type, sealing joint strip section
For O-shaped or rectangle, sealing strip compresses magnitude of interference 15~40%.Wherein T-type seal groove cooperates rectangular seal adhesive tape, both can guarantee close
Seal strip is fixed in seal groove, in turn, ensures that sealing effect.Sealing strip material is high temperature heat-resistant vulcanized rubber, such as silicon rubber
Glue, fluorubber, ethylene propylene diene rubber.
Mold cavity is using polytetrafluoroethylene (PTFE) as anti-sticking coating.Coating applies two kinds of materials by primary coat and face and forms.Sealing
7 section of slot can be rectangular, T-type, and sealing joint strip 8 compresses magnitude of interference 15~40%.8 material of sealing joint strip is high temperature heat-resistant vulcanization
Rubber, such as silicon rubber, fluorubber, ethylene propylene diene rubber, sealing joint strip section can be rectangular, round.The mold is all made of
P20 steel, cavity surface are sprayed with polytetrafluorethylecoatings coatings.
Unspecified part of the present invention belongs to common sense well known to those skilled in the art.
Claims (5)
1. a kind of thermoplastic polyurethane elastomer compression molding mold characterized by comprising upper mold (1), mold core (2), under
Mould (3)；
The mold core (2) includes profiled body structure, rectangle locating piece (13), handle (12)；The connection of profiled body structure one end
Handle (12), and rectangle locating piece (13) are being set at endface position；
The upper mold (1) includes the first type chamber (9), locating slot (5), positioning column (4)；On touch (1) lower surface be arranged the first type chamber
(9), it is distributed several positioning columns (4) around the first type chamber (9), locating slot (5) are arranged at proximal port in the first type chamber (9)；
The lower die (3) includes second type chamber (10), locating slot (5), location hole (6), seal groove (7), sealing joint strip (8), determines
Position folder (14)；Second type chamber (10) are arranged in lower die (3) upper surface, and second type chamber (10) is fixed from setting gradually from port position
Position slot (5), locating clip (14)；It is provided on the die joint contour line of second type chamber (10) seal groove (7), in seal groove (7)
It installs sealing joint strip (8)；It is distributed several location holes (6) around second type chamber (10), the position of each location hole (6) and positioning column
(4) position is corresponding.
2. a kind of thermoplastic polyurethane elastomer compression molding mold according to claim 1, it is characterised in that: described
On touch (1) and lower die (3) molding after, the inner surface of the first type chamber (9) and second type chamber (10) and profiled body structure outer profile
Unanimously, the locating slot (5) for above touching (1) and lower die (3) is consistent with rectangle locating piece (13) profile.
3. a kind of thermoplastic polyurethane elastomer compression molding mold according to claim 1 or 2, it is characterised in that:
The die joint of the first type chamber (9), second type chamber (10) and mold core (2) is coated with teflon plate.
4. a kind of thermoplastic polyurethane elastomer compression molding mold according to claim 1 or 2, it is characterised in that:
The sealing joint strip (8) is heat vulcanized silicone rubber, fluorubber or other tartans.
5. a kind of thermoplastic polyurethane elastomer compression molding mold according to claim 1 or 2, it is characterised in that:
The section of the seal groove (7) is rectangular or T-type, and the section of sealing joint strip (8) is O-shaped or rectangle；Wherein, T-type seal groove is matched
Rectangular seal adhesive tape is closed, quad seal slot cooperates O-shaped sealing joint strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564887.1A CN109702948A (en) | 2018-12-20 | 2018-12-20 | Mold is used in a kind of compression molding of thermoplastic polyurethane elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564887.1A CN109702948A (en) | 2018-12-20 | 2018-12-20 | Mold is used in a kind of compression molding of thermoplastic polyurethane elastomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109702948A true CN109702948A (en) | 2019-05-03 |
Family
ID=66256893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564887.1A Pending CN109702948A (en) | 2018-12-20 | 2018-12-20 | Mold is used in a kind of compression molding of thermoplastic polyurethane elastomer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109702948A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756275A (en) * | 2020-12-30 | 2021-05-07 | 哈尔滨铭川运输有限公司 | Aviation logistics transportation ground service classifier and using method |
| CN112879690A (en) * | 2021-01-20 | 2021-06-01 | 哈尔滨铭川运输有限公司 | Make things convenient for submarine pipeline transportation locking fixing device |
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| GB546445A (en) * | 1940-08-03 | 1942-07-14 | Wingfoot Corp | Apparatus for vulcanising floor mats |
| FR2789623B1 (en) * | 1999-02-11 | 2001-04-20 | Patrick Bolzinger | REUSABLE MOLD AND MOLDING METHOD USING SUCH A MOLD |
| CN1400937A (en) * | 2000-02-15 | 2003-03-05 | 陶氏环球技术公司 | Mold for reaction injection molding and reaction injection molding process |
| CN101695863A (en) * | 2009-10-29 | 2010-04-21 | 郑国宏 | Injection mold for continuous-upper injection respiratory ventilation shoe and production process for continuous-upper injection respiratory ventilation shoe |
| CN102303386A (en) * | 2011-08-26 | 2012-01-04 | 中国海洋石油总公司 | Deep water pipeline composite polyurethane elastomer heat insulation layer casting molding device |
| CN105666774A (en) * | 2016-04-22 | 2016-06-15 | 十堰森鑫汽车零部件有限公司 | Hot-press molding die for silicon rubber seal strip for automobile cylinder gasket |
| CN206780846U (en) * | 2016-08-31 | 2017-12-22 | 赛纳集团有限公司 | The processing mold of new polyurethane rain boots |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB546445A (en) * | 1940-08-03 | 1942-07-14 | Wingfoot Corp | Apparatus for vulcanising floor mats |
| FR2789623B1 (en) * | 1999-02-11 | 2001-04-20 | Patrick Bolzinger | REUSABLE MOLD AND MOLDING METHOD USING SUCH A MOLD |
| CN1400937A (en) * | 2000-02-15 | 2003-03-05 | 陶氏环球技术公司 | Mold for reaction injection molding and reaction injection molding process |
| CN101695863A (en) * | 2009-10-29 | 2010-04-21 | 郑国宏 | Injection mold for continuous-upper injection respiratory ventilation shoe and production process for continuous-upper injection respiratory ventilation shoe |
| CN102303386A (en) * | 2011-08-26 | 2012-01-04 | 中国海洋石油总公司 | Deep water pipeline composite polyurethane elastomer heat insulation layer casting molding device |
| CN105666774A (en) * | 2016-04-22 | 2016-06-15 | 十堰森鑫汽车零部件有限公司 | Hot-press molding die for silicon rubber seal strip for automobile cylinder gasket |
| CN206780846U (en) * | 2016-08-31 | 2017-12-22 | 赛纳集团有限公司 | The processing mold of new polyurethane rain boots |
Non-Patent Citations (3)
| Title |
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| 王海斗，徐滨士，刘家浚编著: "《固体润滑膜层技术与应用》", 31 March 2009, 国防工业出版社 * |
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| 黄乃瑜等主编，中国机械工程学会，中国模具设计大典编委会: "《中国模具设计大典 第5卷 铸造工艺装备与压铸模设计》", 31 January 2003, 江西科学技术出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756275A (en) * | 2020-12-30 | 2021-05-07 | 哈尔滨铭川运输有限公司 | Aviation logistics transportation ground service classifier and using method |
| CN112756275B (en) * | 2020-12-30 | 2023-04-11 | 运易通科技有限公司 | Air logistics transportation ground service classifier and using method |
| CN112879690A (en) * | 2021-01-20 | 2021-06-01 | 哈尔滨铭川运输有限公司 | Make things convenient for submarine pipeline transportation locking fixing device |
| CN112879690B (en) * | 2021-01-20 | 2022-10-28 | 福建省恒基建设股份有限公司 | Make things convenient for submarine pipeline transportation locking fixing device |
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Application publication date: 20190503 |
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