CN104690890A - Electric heating type rapid heat cycle molding injection mold - Google Patents
Electric heating type rapid heat cycle molding injection mold Download PDFInfo
- Publication number
- CN104690890A CN104690890A CN201310663737.7A CN201310663737A CN104690890A CN 104690890 A CN104690890 A CN 104690890A CN 201310663737 A CN201310663737 A CN 201310663737A CN 104690890 A CN104690890 A CN 104690890A
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- plate
- cavity plate
- injection mold
- heating type
- core plate
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Classifications
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- 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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/007—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass injection moulding tools
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to an electric heating type rapid heat cycle molding injection mold. The mold comprises a core plate and a cavity plate, wherein the core plate and the cavity plate are respectively connected with support plates; the support plates are characterized by connecting a plurality of ordinary steel plates with poor heat-conducting properties in a criss-cross manner to form a latticed structure; part of meshes in closed holes formed by matching the support plates with the core plate and the cavity plate are preferably selected and heating elements are installed inside the meshes by utilizing special heat insulation devices to achieve rapid heating of the molding surface of the mold; the cavity plate is formed by a molding layer and a base layer; the base layer is prepared with ordinary hot work mold steel by adopting a conventional process; the molding layer is prepared by superposing high-quality mold steel with good heat fatigue resistance and terrific polishing property on the surface of the base layer by adopting an overlay welding method; cooling pipelines are arranged on the core plate and the base layer of the cavity plate to achieve rapid cooling of the molding surface of the mold. The electric heating type rapid heat cycle molding injection mold has the beneficial effect that innovative designs of the material, the structure, and the like are put forward.
Description
Technical field
The invention belongs to the injection molding technology field of materials processing subject, particularly relate to a kind of electrical heating type high-gloss injection mold.
Background technology
High light injection molding technology, as an extremely potential green forming technique, has attracted a large amount of scholars to carry out research and extension to it, but the development of high light injection molding technology is still immature, also there is the problem that many witches are to be solved.Particularly at high-gloss injection mold design and manufaction technical elements, Problems existing is particularly outstanding.
Because the forming surface polishing required precision of high-gloss injection mold is high, so, first require that its mold materials must possess excellent polishing performance; Secondly, because in normal productive process, Fast Heating and quick cooling hocket repeatedly, high-gloss injection mold forming part easily produces Under Thermal Fatigue Damage, thus causes mould invalidation, therefore, require that cavity plate material also must possess the ability of good heat resistance, thermal deformation resistant and heat fatigue.According to the above requirement to high-gloss injection mold cavity plate material, people often select import high-quality mould steel, as the CENAI of FDAC, the NAK80 of Japanese Datong District and Sweden's hot die steel (VIDAR SUPERIOR), these mold materials have good dimensional stability and polishing performance and higher heat shock resistance and thermal fatigue property, it is the first-selection of high-gloss injection mold material, but these high-quality price of steel product are expensive, cause the high expensive of mould.
Existing electrical heating type high-gloss injection mold also also exists the low outstanding problem of the efficiency of cycle, in order to shorten molding cycle and improve injection moulding production efficiency, the structural design of electrical heating type high-gloss injection mold must take into full account the requirement of mould Fast Heating and cooling fast, this just requires must adopt special method for designing or structure in Design of Dies, to reduce the thermal capacity of mould as far as possible, thus improve the efficiency of cycle.
So, the present invention is directed to the innovative design that electrical heating type high-gloss injection mold carries out materials and structures two aspect, while guarantee product quality, reduce the production cost of mould, reduce the thermal capacity of mould and the loss of heat, to improve heating cooling effectiveness, shorten molding cycle.
Summary of the invention
The object of the invention is the deficiency overcoming above-mentioned technology, there is provided a kind of electrical heating type high-gloss injection mold, this cavity board is made up of base layer and shape layer, and selects two kinds of different steel to make, greatly can save the consumption of high-quality mould steel, thus reduce die cost.The gripper shoe of mold cores and die cavity have employed latticed design, can reduce the thermal capacity of mould and the loss of heat greatly, improves heating cooling effectiveness, shortens molding cycle, meanwhile, greatly can also alleviate the weight of mould.Simultaneously, the mesh utilizing gripper shoe to coordinate with core plate and core plate to be formed is as the installing hole of heating element heater, thus eliminate the trouble offering separately heating element heater installing hole on cavity board and core plate, and improve the intensity of cavity board and core plate.
For above reaching the object that describes, present invention employs following concrete technical scheme.
A kind of electrical heating type high-gloss injection mold, this mould comprises core plate and cavity plate, and described core plate and cavity plate are connected to gripper shoe.The general steel plate that described gripper shoe is differed from by polylith heat conductivility, connects into latticed structure by crisscross.Preferred gripper shoe coordinates the part mesh in the blind hole formed with core plate and cavity plate, utilize special heat-proof device, heating element heater is arranged on the inside of these mesh, realize the Fast Heating to molding surface.Described die cavity is made up of shape layer and base layer, the very thin thickness of described shape layer.Described base layer adopts common process manufacture by common hot die steel, and described shape layer is selected to be possessed good thermal fatigue resistance and the splendid high-quality mould steel of polishing performance and adopt welding method to superpose on the surface at base layer to make.Described core plate and cavity plate base layer offer cooling pipe, and is connected with attemperating unit, in pipeline, pass into the quick cooling of low-temperature cooling water realization to molding surface.Described core plate and the inner position near forming surface of cavity plate are also provided with temperature measuring equipment.Temperature measuring equipment, heater, cooling device are connected with attemperating unit.
Described electrical heating type high-gloss injection mold comprises core plate and cavity plate.
Described core plate and cavity plate are connected to gripper shoe.
Described gripper shoe is fenestral fabric.
Described fenestral fabric is made up of squared mesh.
The design criteria of described fenestral fabric is the structural strength that will ensure mould.
Described fenestral fabric is welded by crisscross by plurality of steel plates.
Described steel plate all adopts the general steel plate of heat conductivility difference.
Described gripper shoe coordinates the part mesh inside in the closed mesh formed to be provided with heating element heater with core plate and cavity plate, realize the Fast Heating to die surface.
The described preferred criterion of part mesh for installing heating element heater is the homogeneous heating that will ensure molding surface.
Between described heating element heater and gripper shoe, heat insulating substrate is installed.
Described cavity plate is made up of shape layer and base layer.
Described base layer selects common hot die steel to make.
Described shape layer is selected possesses good thermal fatigue resistance and the splendid high-quality mould steel of polishing performance is made.
The preparation method of described cavity plate, is characterized in that:
The first step: with the base layer of conventional method processing and fabricating cavity plate;
Second step: adopt welding method to superpose shaping layer material on the surface at base layer, make cavity plate blank;
3rd step: sanding and polishing is carried out, to meeting roughness requirements to the type rooved face of die cavity blank.
Described core plate and cavity plate base layer offer cooling pipe.
Be connected with cooling medium or compressed air in described cooling pipe, cooling pipe is provided with the reversal valve of controlled cooling model pipeline break-make, and reversal valve is connected with attemperating unit, by passing into the quick cooling of low-temperature cooling water realization to molding surface in pipeline.
Described cavity plate and the inner position near forming surface of core plate are separately installed with temperature measuring equipment.
Described temperature measuring equipment is thermocouple.
Owing to have employed technique scheme, the electrical heating type high-gloss injection mold of the present invention has the beneficial effect of following several aspect.
1. production cost is low;
Because of cavity board shape layer very thin thickness, the ratio accounting for cavity board cumulative volume is general not high, and the volume of cavity board is larger, and the volume fraction shared by shape layer can be less.So, adopt expensive high-quality mould steel to manufacture shape layer, cheap common die steel making base layer, can be implemented in and meet die surface there is good polishability and corrosion resistance, while ensureing moulding surface quality, greatly save the consumption of expensive high-quality mould steel.Owing to having set up the gripper shoe that can improve the intensity of mould in cavity plate and core plate, so, while meeting mould structure requirement of strength, the thickness of cavity plate and core plate can be reduced, thus saved the consumption of mould steel.Simultaneously, the mesh utilizing gripper shoe to coordinate with core plate and core plate to be formed is as the installing hole of heating element heater, thus eliminate the trouble offering separately heating element heater installing hole on cavity board and core plate, and improve the intensity of cavity board and core plate.So the present invention can reduce the production cost of mould greatly, there is good economic benefit.
2. the efficiency of cycle is high;
Because the gripper shoe be connected with cavity plate and core plate have employed latticed non-solid structure, while guarantee mould structure intensity, the thermal capacity of mould can be reduced greatly.Simultaneously, due to heat-blocking action and the heat-blocking action of heat insulating substrate set up between heating element heater and gripper shoe of air in gripper shoe mesh, and the bad thermal conductivity of supporting plate material, so, in the heating period of mould, effectively can reduce heat to scatter and disappear to gripper shoe direction, thus be conducive to improving mold heated efficiency, reduce energy ezpenditure; In the mold cools down stage, effectively can reduce the heat of gripper shoe to cavity plate transmission, thus improve the cooling effectiveness of mould, be conducive to the consumption reducing energy equally.
3. mold weight is light;
Fenestral fabric is made after the gripper shoe optimization that cause is connected with cavity plate and core plate, it is while the structural strength ensureing mould, no matter mold weight, be that the aspect such as transport or operation is all more convenient than the gripper shoe of entity structure and quick if being alleviated greatly.
In a word, the present invention is directed to the aspects such as the materials and structures of electrical heating type high-gloss injection mold and carried out innovative design, make this mould have the significant advantages such as production cost is low, heating cooling effectiveness is high, product surface quality good, mold weight is light.
Accompanying drawing explanation
Fig. 1 is electrical heating type high-gloss injection mold structural representation of the present invention.
Fig. 2 is the partial enlarged drawing at I place in Fig. 1.
Fig. 3 is the supporting plate structure schematic diagram of electrical heating type high-gloss injection mold of the present invention.
In figure: 1, core side heat insulating substrate, 1 ', cavity side heat insulating substrate 2, sprue bush, 3, sprue, 4, runner, 5, cast gate, 6, core fixing plate, 7, core gripper shoe, 7 ', cavities bear plate, 8, plastic, 9, cavity plate, 901, cavity plate moulding section, 902, cavity plate body portion, 9001, cooling pipe in cavity plate, 10, thermocouple in core plate, 10 ', thermocouple in cavity plate, 11, impression bolster, 12, backing plate, 13, support, 14, moving clamping plate, 15, push rod, 16, thimble fixed head, 17, the heating element heater of die cavity side, 17 ', the heating element heater of core side, 18, core plate, 19, fixed clamping plate, 18001, cooling pipe in core plate, 701 steel plates.
Detailed description of the invention
For understanding technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figures 1 to 3, a kind of electrical heating type high-gloss injection mold that the present invention announces, it comprises cavity plate 9 and core plate 18, described cavity plate 9 and core plate 18 are connected to gripper shoe 7 ' and 7, described gripper shoe 7 ' and 7 adopts the general steel plate 701 of polylith heat conductivility difference, connect into latticed structure by crisscross, described fenestral fabric is made up of squared mesh, and the size of mesh and distribution need optimal design to ensure the performance requirement of mould each side.And as shown in Figure 3, gripper shoe 7 ' and 7 matches with cavity plate 9 and core plate 18 the Kong Weiwei closed state located, after needs coordinate with cavity plate 9 and core plate 18, form blind bore.Part mesh preferably in this some holes, and embed heat insulating substrate 1 and 1 ' (as shown in Figure 2) in hole, is arranged on the inside of these mesh, realizes the Fast Heating to die surface by heating element heater 17 and 17 '.Described cavity plate 9 is made up of shape layer 901 and base layer 902, the very thin thickness of described shape layer 901, about 0.4 ~ 4mm.Described base layer 902 adopts common process manufacture by common hot die steel, described shape layer 901 is selected possesses good thermal fatigue resistance and the splendid high-quality mould steel of polishing performance, as the CENA1 of FDAC, adopt welding method to superpose on the surface at base layer 902 to make, and through sanding and polishing to required roughness.Described core plate 18 and cavity plate base layer 902 offer cooling pipe 18001 and 9001, cooling medium or compressed air is connected with in described cooling pipe, cooling pipe is provided with the reversal valve of controlled cooling model pipeline break-make, reversal valve is connected with attemperating unit, by passing into the quick cooling of low-temperature cooling water realization to die surface in pipeline.Described core plate and cavity plate are also provided with thermocouple 10 and 10 ' as temperature measuring equipment, and are connected with attemperating unit.Temperature measuring equipment, heater, cooling device are connected with attemperating unit.
Operation principle of the present invention is as follows:
According to the course of mold temperature change, a complete high light injection molding cycle can be divided into the mold heated stage, and high temperature keeps stage, mold cools down stage and low temperature to keep the stage.Be described in detail below in conjunction with the operation principle of above-mentioned several working stage to a kind of electrical heating type high-gloss injection mold of the present invention.
In the mold heated stage, attemperating unit is to the heating element heater 17 in gripper shoe 7 and 7 ' and 17 ' energising, a large amount of Joule heats that heating element heater produces constantly spread in cavity plate 9 and core plate 18, thus raise the temperature on cavity plate 9 surface and core plate 18 surface, and the gripper shoe 7 ' and 7 be connected with core plate 18 with cavity plate 9 is owing to have employed latticed non-solid structure, the thermal capacity of mould can be reduced greatly, simultaneously, due to the heat-blocking action of air in mesh in gripper shoe 7 and 7 ' and the heat insulating substrate 1 set up between heating element heater and gripper shoe and 1 ' heat-blocking action, and the bad thermal conductivity of supporting plate material, effectively can reduce heat to scatter and disappear to gripper shoe direction, thus reduce thermal loss and improve the efficiency of heating surface.In mold heated process, be arranged on thermocouple in core plate 18 and cavity plate 9 10 and 10 ' respectively to the temperature of attemperating unit Real-time Feedback mold cavity surface and whose surfaces, when temperature is increased to the temperature upper limit of setting, attemperating unit cuts off the power supply of heating element heater 17 and 17 ', thus stops heating mould.
Keep the stage at high temperature, mould is in matched moulds state, and the plastic melt in injecting machine material tube will enter mold cavity, until melt is full of die cavity completely through nozzle, sprue 3, runner 4, cast gate 5 successively.Because mould-filling time is very short, thus in the process mold cavity temperature substantially can maintain heating terminate after state.In the process, if mold cavity temperature declines too many, attemperating unit can give heating element heater 17 and 17 ' energising again, to maintain the condition of high temperature on mold cavity surface and whose surfaces.
In the mold cools down stage, attemperating unit opens cooling water pipeline by controlling reversal valve, low-temperature cooling water flows in the cooling pipe 18001 and 9001 in core plate 18 and cavity plate 9, the heat that core plate 18 and cavity plate 9 comprise is pulled away constantly spreading in low-temperature cooling water, thus reduce the temperature of whose surfaces and mold cavity surface, with plastic cement 8 in quick cooling die die cavity.In mold cools down process, due to the non-conductor that the air in gripper shoe 17 and 17 ' mesh is heat, and gripper shoe has selected the steel of heat conductivility difference, so, the heat diffusion that can reduce gripper shoe enters in the low-temperature cooling water in cooling pipe, thus reduces thermal loss and improve die surface cooling effectiveness.In cooling procedure, be arranged on thermocouple in core plate 18 and cavity plate 9 10 and 10 ' respectively in real time to the temperature of attemperating unit feedback-type wicking surface and mold cavity surface, when temperature is reduced to the lowest temperature preset, attemperating unit switches reversal valve and stops in heating and cooling system, passing into low-temperature cooling water, to stop cooling die.
The stage is kept at low temperature, attemperating unit opens high-pressure gas pipeline by controlling reversal valve, gases at high pressure enter in cooling pipe, cooling water residual in pipeline is drained, thus avoid the excessive descent of mold temperature, effectively avoid cooling water residual in cooling pipe to the interference of mold heated in next molding cycle simultaneously, be conducive to improving mold heated efficiency.In this stage, the temperature of plastic cement 8 has been cooled to meet and has ejected requirement, opens mould, takes out plastic 8, thus complete an injection molding cycle.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electrical heating type high-gloss injection mold, this mould comprises core plate and cavity plate, described core plate and cavity plate are connected to gripper shoe, the general steel plate that described gripper shoe is differed from by polylith heat conductivility, by crisscross connection, and coordinate with core plate and cavity plate the fenestral fabric being formed and there is closed mesh, by special heat-proof device, part mesh heating element heater being arranged on latticed gripper shoe is inner, form heater, the shape layer that described cavity plate is made up of two kinds of different materials and base layer form, and cooling pipe is offered respectively on cavity plate base layer and core plate, form cooling device.
2. electrical heating type high-gloss injection mold according to claim 1, it is characterized in that: mould comprises core plate and cavity plate, described core plate and cavity plate are connected to gripper shoe.
3. electrical heating type high-gloss injection mold according to claim 1, it is characterized in that: the general steel plate that described gripper shoe is differed from by polylith heat conductivility, by crisscross connection, and coordinate with core plate and cavity plate the fenestral fabric being formed and there is closed mesh.
4. electrical heating type high-gloss injection mold according to claim 1, is characterized in that: heating element heater is installed in part mesh on the supporting plate, and is provided with heat insulating substrate between heating element heater and gripper shoe.
5. electrical heating type high-gloss injection mold according to claim 1, is characterized in that: described cavity plate is made up of shape layer and base layer.
6. electrical heating type high-gloss injection mold according to claim 5, is characterized in that: described base layer selects common hot die steel to make.
7. electrical heating type high-gloss injection mold according to claim 5, is characterized in that: described shape layer is selected possesses good thermal fatigue resistance and the splendid high-quality mould steel of polishing performance is made.
8. electrical heating type high-gloss injection mold according to claim 5, the preparation method of described cavity plate, is characterized in that:
The first step: with the base layer of conventional method processing and fabricating cavity plate;
Second step: adopt welding method to superpose shaping layer material on the surface at base layer, make cavity plate blank;
3rd step: sanding and polishing is carried out, to meeting roughness requirements to the type rooved face of die cavity blank.
9. electrical heating type high-gloss injection mold according to claim 1, it is characterized in that: described cavity plate base layer and core plate offer cooling pipe, cooling medium or compressed air is connected with in described cooling pipe, cooling pipe is provided with the reversal valve of controlled cooling model pipeline break-make, reversal valve is connected with attemperating unit, by passing into the quick cooling of low-temperature cooling water realization to die surface in pipeline.
10. electrical heating type high-gloss injection mold according to claim 1, is characterized in that: described cavity plate and the inner close forming surface position of core plate are separately installed with temperature measuring equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663737.7A CN104690890A (en) | 2013-12-10 | 2013-12-10 | Electric heating type rapid heat cycle molding injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663737.7A CN104690890A (en) | 2013-12-10 | 2013-12-10 | Electric heating type rapid heat cycle molding injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN104690890A true CN104690890A (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310663737.7A Pending CN104690890A (en) | 2013-12-10 | 2013-12-10 | Electric heating type rapid heat cycle molding injection mold |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346063A (en) * | 2015-12-15 | 2016-02-24 | 安源管道实业有限公司 | Heating and cooling integrated tube end sealing mechanism for steel-plastic composite tube |
| CN107310092A (en) * | 2017-05-26 | 2017-11-03 | 天津大学 | Polymer Melts in Complex shape face optics precision injection molding method and device |
| CN109195766A (en) * | 2016-06-08 | 2019-01-11 | 三菱电机株式会社 | Ejection compress moulding mold and ejection compress moulding method |
| CN111716084A (en) * | 2020-07-01 | 2020-09-29 | 南京工程学院 | Manufacturing method of copper/steel composite injection mold with honeycomb and embedded nail interface structure |
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| CN101531051A (en) * | 2009-04-27 | 2009-09-16 | 宁海县大鹏模具塑料有限公司 | An electrical heating high light injection mold of isolation energy-saving structure |
| JP2010201866A (en) * | 2009-03-05 | 2010-09-16 | Sumitomo Heavy Ind Ltd | Metal mold device, heat insulating member and method of manufacturing metal mold device |
| JP2010201846A (en) * | 2009-03-05 | 2010-09-16 | Kanto Auto Works Ltd | Structure for controlling temperature of mold for injection molding |
| CN203697387U (en) * | 2013-12-10 | 2014-07-09 | 深圳信息职业技术学院 | Electric heating type high-gloss injection mold |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005161798A (en) * | 2003-12-05 | 2005-06-23 | Daito Kogyo Kk | Resin forming mold |
| JP2010201866A (en) * | 2009-03-05 | 2010-09-16 | Sumitomo Heavy Ind Ltd | Metal mold device, heat insulating member and method of manufacturing metal mold device |
| JP2010201846A (en) * | 2009-03-05 | 2010-09-16 | Kanto Auto Works Ltd | Structure for controlling temperature of mold for injection molding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346063A (en) * | 2015-12-15 | 2016-02-24 | 安源管道实业有限公司 | Heating and cooling integrated tube end sealing mechanism for steel-plastic composite tube |
| CN109195766A (en) * | 2016-06-08 | 2019-01-11 | 三菱电机株式会社 | Ejection compress moulding mold and ejection compress moulding method |
| CN107310092A (en) * | 2017-05-26 | 2017-11-03 | 天津大学 | Polymer Melts in Complex shape face optics precision injection molding method and device |
| CN111716084A (en) * | 2020-07-01 | 2020-09-29 | 南京工程学院 | Manufacturing method of copper/steel composite injection mold with honeycomb and embedded nail interface structure |
| CN111716084B (en) * | 2020-07-01 | 2021-07-27 | 南京工程学院 | Manufacturing method of copper/steel composite injection mold with honeycomb and embedded nail interface structure |
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