CN103552222B - The electric heat type heat cycle mould that water jet cools fast and cooling means thereof - Google Patents
The electric heat type heat cycle mould that water jet cools fast and cooling means thereof Download PDFInfo
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- CN103552222B CN103552222B CN201310516758.6A CN201310516758A CN103552222B CN 103552222 B CN103552222 B CN 103552222B CN 201310516758 A CN201310516758 A CN 201310516758A CN 103552222 B CN103552222 B CN 103552222B
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- heating plate
- formpiston
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- coldplate
- cooling
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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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
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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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
-
- 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
- B29C2045/7368—Heating or cooling of the mould combining a heating or cooling fluid and non-fluid means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides the electric heat type heat cycle mould that a kind of water jet cools fast, comprise former and formpiston; Former comprises interconnective former heating plate and former coldplate, and formpiston comprises interconnective formpiston heating plate and formpiston coldplate; In former heating plate and formpiston heating plate, heating and temperature element are installed; The front of former heating plate and the front of formpiston heating plate surround mold cavity; Cooling chamber is offered between former heating plate and former coldplate, between formpiston heating plate and formpiston coldplate; Binding face between former heating plate and former coldplate, binding face between formpiston heating plate and formpiston coldplate are provided with seal; Water jet cooling package cooling water being injected into its back side through cooling chamber is respectively arranged with in former coldplate and formpiston coldplate.The present invention provides the cooling means of this mould simultaneously.Structure of the present invention is simple, heating and cooling effectiveness is high, require lower to Making mold and assembly precision, is convenient to industrial applications.
Description
Technical field
The present invention relates to polymer material molding mould, particularly electric-heating heat circulation injection moulding/blow mold of cooling fast of water jet and cooling means thereof.
Background technology
Injection moulding and blowing are two kinds of forming methods of macromolecular material, and shaping goods are widely used in the industrial circles such as automobile, household electrical appliance and consumer electronics.In recent years, more and more higher requirement is proposed to energy-conservation, the material-saving in the mechanical property of macromolecule material product, presentation quality and shape and size precision and forming process, reduction of discharging and environmental protection etc.
In the injection moulding and blow-molding process of routine, the temperature of mould is controlled in below the heat distortion temperature far below plastics used usually to enhance productivity.But the excessive temperature difference between plastic melt and mold cavity inevitably causes goods existing defects.For injection moulding, lower mold cavity temperature makes the plastic melt premature setting of injection, increases the flow resistance of plastic melt, and such as weld mark, fiber leak outside, surface smoothness is low and the defect such as buckling deformation to cause goods to exist; For blowing, when contacting with low temperature mold cavity after viscous state preform blowup, parison top layer rapid curing, causes product surface easily to occur the open defect such as pit and orange peel line.For improving the quality of goods further, conventional injection moulding and blow-molded article often need follow-up processing procedure.Such as, for improving the presentation quality of goods, need to polish and spray treatment to the surface of moulded products.Subsequent treatment not only obviously extends the production procedure of goods, increases the cost of goods, and healthy and surrounding environment can bring harm to operating personnel.
Rapid thermal cycles is shaping is a kind of polymer material molding new technology in recent years developed.Be different from the mould normal temperature control strategy in conventional injection moulding and blowing, rapid thermal cycles forming technique adopts dynamic analog temperature control mode, namely in forming process, carries out Dynamic controlling to adapt to the demand of forming process different phase to mold temperature to mold temperature.Adopt this dynamic die temperance control mode; make plastic melt or viscous state parison can carry out mold filling or inflation under higher mould-cavity temperature; greatly improve the flow behavior of melt, significantly improve the quality of plastic, the subsequent processes needed for conventional shaping method can be eliminated.
Realize rapid thermal cycles technology and need to arrange heating and cooling device to carry out alternately heating and cooling rapidly to mold cavity, wherein adopt heating to have the advantages such as easy, easy, flexible, low cost and easy care as the mode of heating of thermal source.US Patent No. 5989008 proposes a kind of multiple layers of molds structure, comprise from inside to outside set gradually mold cavity top layer, electric heating layer and die matrix layer.Electrical heating and water cooling mode is adopted to realize Fast Heating and the cooling fast of mold cavity.But this mould structure is complicated, and bond strength between each layer of mould is low, easily produces thermal stress fatigue and destroys, reduce die life in circulation colds and heat succeed each other process.Grant number be 201010174808.3 Chinese patent provide a kind of electrothermal, floating type rapid thermal circulation injection mould, comprise floating type die cavity heating plate, floating core heating plate, die cavity coldplate, core coldplate, liftout attachment, guider etc.By liftout attachment the heating part of this mould and cooling segment (i.e. floating type die cavity heating plate and die cavity coldplate, floating core heating plate and core coldplate) be separated completely, to avoid the mutual interference of mold heated and mold cools down effect, improve efficiency of utilization.But this mould requires very high to manufacture and assembly precision.
Therefore, existing electrothermal rapid thermal cycles mould exists that heating/cooling effectiveness is low, mould structure is complicated, die life is short, Making mold and assembly precision require the problems such as height.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide simple, that the water jet manufactured and assembly precision requirement is lower is cooled the fast electric heat type heat cycle mould of a kind of structure.
Another object of the present invention is to provide a kind of by above-mentioned mould realize easy to operate, be easy to application, cool cooling means fast.
In order to achieve the above object, the present invention adopts technical scheme as described below.
The electric heat type heat cycle mould that water jet cools fast, comprises former and formpiston; Former comprises interconnective former heating plate and former coldplate, and formpiston comprises interconnective formpiston heating plate and formpiston coldplate; Be provided with heating and temperature element in former heating plate and formpiston heating plate, preferably, heating is electrical bar, and temperature element is thermocouple; The front of former heating plate and the front of formpiston heating plate surround mold cavity; Cooling chamber is offered between former heating plate and former coldplate, between formpiston heating plate and formpiston coldplate; Binding face between former heating plate and former coldplate, binding face between formpiston heating plate and formpiston coldplate are provided with seal; Be provided with water jet cooling package cooling water being injected into the former heating plate back side through cooling chamber in former coldplate, in formpiston coldplate, be provided with water jet cooling package cooling water being injected into the formpiston heating plate back side through cooling chamber.This mould structure can make the back side of cooling water by water jet cooling package high velocity jet former heating plate and the back side of formpiston heating plate, effectively improves cooling effectiveness; The existence of cooling chamber, decreases the contact area between heating plate and coldplate, makes assembling simple and convenient; Seal can effectively prevent the cooling water in cooling chamber from leaking.
Water jet cooling package comprises cooling duct and jet nozzle, and cooling duct is opened in former coldplate and formpiston coldplate, and jet nozzle is connected by the exit end face of screw with cooling duct, and just to the back side of former heating plate and the back side of formpiston heating plate.
Jet nozzle spherically shape protrudes to cooling chamber, offers multiple spray orifice of globally arranging in jet nozzle equably, and this structure is conducive to the jeting area increasing cooling water, strengthens cooling effectiveness; The quantity of jet nozzle can be determined according to the cooled region area at the back side of former heating plate, formpiston heating plate, to guarantee that whole cooled region can evenly cool rapidly.
Be provided with support member between former heating plate and former coldplate, between formpiston heating plate and formpiston coldplate, support member is through cooling chamber.Preferably, support member is support column, and its cross sectional shape can be circle, rectangle or square, and the sectional dimension of support column and quantity can be determined according to the magnitude of load born needed for former heating plate and formpiston heating plate are in forming process.The strength and stiffness that support member can significantly improve former heating plate and formpiston heating plate are set, improve the mold use life-span.
Heat shield is provided with between support member and former heating plate, between support member and formpiston heating plate; Heat shield effectively can avoid the heat transfer between former heating plate and support member, between formpiston heating plate and support member, improves efficiency of utilization.
The bottom of cooling chamber arranges at least one coolant outlet, coolant outlet water pump, and the cooling water in cooling chamber can be extracted out by water pump fast; Under the prerequisite that the bottom size of cooling chamber allows, offer the more and larger-size coolant outlet of quantity as much as possible, to discharge cooling water fast.
Former heating plate and former coldplate are connected by screw, and formpiston heating plate and formpiston coldplate are connected by screw.
The cooling means of the electric heat type heat cycle mould that water jet cools fast, utilizes water jet cooling package to make cooling water directly spray the back side of former heating plate and the back side of formpiston heating plate, cools fast former heating plate and formpiston heating plate; This method has easy to operate and that cooling effectiveness is high advantage.
The cooling means of the electric heat type heat cycle mould that water jet cools fast, comprises the steps: that a. passes into cooling water toward the cooling duct in former coldplate and formpiston coldplate, starts the water pump connected with coolant outlet simultaneously; B. cooling water is formed uniformly the High-Pressure Water that multiply is dispersion shape distribution after jet nozzle, sprays the back side of former heating plate and formpiston heating plate, and the cooling water be detained in cooling chamber is constantly discharged by water pump simultaneously; C., when former heating plate and formpiston heating plate are cooled to predetermined temperature, stop passing into cooling water toward cooling duct, after the cooling water in chamber to be cooled drains, stop pump working.
Compared with prior art, the present invention has following advantage.
(1) structure is simple.Heating is directly installed in mold heated plate and heats mold cavity by the present invention, and compared with existing multiple layers of molds structure, structure of the present invention simply, easily realizes.
(2) mold cools down and the efficiency of heating surface high.The present invention adopts the water jet type of cooling to cool mould, and compared with the mould convection current type of cooling of routine, the present invention significantly improves the cooling effectiveness of mould; Mold heated plate separates with coldplate by cooling chamber in the present invention completely, avoids the mutual interference of mold heated and mold cools down effect, significantly improves the efficiency of heating surface of mould.Therefore, present invention significantly reduces the molding cycle of moulded products, improve production of articles efficiency.
(3) require lower to the manufacture of mould and assembly precision.The present invention adopts screw mold heated plate and coldplate to be linked together, and in forming process, relative motion does not occur each other.Therefore, compared with existing electrothermal, floating mold structure, the present invention requires lower to the manufacture of mould and assembly precision.
(4) mould strength and rigidity high.Be provided with support member in the cooling chamber of the present invention between mold heated plate and coldplate, make mould have higher strength and stiffness, effectively can bear the shock loading in forming process, thus reduce the deflection of heating plate.
Accompanying drawing explanation
Fig. 1 is the electric heat type heat cycle mould structural representation that water jet of the present invention cools fast.
Fig. 2 is the I-I sectional view of mould structure shown in Fig. 1.
Fig. 3 is the C place close-up schematic view in mould structure shown in Fig. 2.
Fig. 4 a is fluidic nozzle configurations schematic diagram, and Fig. 4 b is II-II sectional view of jet nozzle shown in Fig. 4 a.
Fig. 5 a-5d is the process schematic of the electric heat type heat cycle mould moulded products adopting water jet to cool fast.
Above-mentioned each number in the figure is described as follows.A-former; B-formpiston; 1-former heating plate; 2-former coldplate; 3-formpiston heating plate; 4-formpiston coldplate; 5-electrical bar; 6-thermocouple; 7-cooling duct; 8-cooling chamber; The back side of 9-former heating plate; The back side of 10-formpiston heating plate; 11-jet nozzle; 12-screw; 13-support column; 14-heat shield; 15-seal; 16-coolant outlet; 17-spray orifice; 18-holding screw; 19-moulded products.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiment of the present invention is not limited thereto.
Fig. 1 to Fig. 4 shows concrete structure of the present invention, and Fig. 5 a to 5d shows the course of work of the present invention.
The electric heat type heat cycle mould that water jet of the present invention cools fast comprises former A and formpiston B.Former A comprises former heating plate 1 and former coldplate 2, and formpiston B comprises formpiston heating plate 3 and formpiston coldplate 4; In former heating plate 1 and formpiston heating plate 3, equally distributed electrical bar 5 and equally distributed thermocouple 6 are all installed; Be provided with water jet cooling package in former coldplate 2 and formpiston coldplate 4, water jet cooling package makes cooling water directly spray the back side 9 of former heating plate, the back side 10 of formpiston heating plate; Screw 12 is adopted respectively former heating plate 1 to be connected with formpiston coldplate 4 with former coldplate 2, formpiston heating plate 3; Cooling chamber 8 is offered respectively between former heating plate 1 and former coldplate 2, between formpiston heating plate 3 and formpiston coldplate 4, cooling chamber 8 is the cavity that the back side of former heating plate 1 and formpiston heating plate 3 caves inward, and occupies the area of the back side overwhelming majority of former heating plate 1 and formpiston heating plate 3; Binding face between former heating plate 1 and former coldplate 2, binding face between formpiston heating plate 3 and formpiston coldplate 4 are respectively arranged with seal 15, and seal 15 can prevent the cooling water in cooling chamber 8 from leaking.
Water jet cooling package comprises cooling duct 7 and jet nozzle 11.Cooling duct 7 is opened in former coldplate 2 and formpiston coldplate 4; Jet nozzle 11 is connected by the exit end face of holding screw 18 with cooling duct 7, and just to the back side 9 of former heating plate and the back side 10 of formpiston heating plate.
Jet nozzle 11 spherically shape protrudes to cooling chamber 8, and offer multiple tiny spray orifice 17 in jet nozzle 11 equably, spray orifice 17 is globally arranged (as shown in Figs. 4a and 4b), and this structure is conducive to the jeting area increasing cooling water, strengthens cooling effectiveness; The quantity of jet nozzle 11 can be determined according to the cooled region area at the back side 10 of the back side 9 of former heating plate and formpiston heating plate, to guarantee that whole cooled region can evenly cool rapidly.
Be provided with support column 13 between former heating plate 1 and former coldplate 2, between formpiston heating plate 3 and formpiston coldplate 4, support column 13 is fixed by interference fit or the mode such as to be threaded, and support column 13 is through cooling chamber 8.Heat shield 14 is provided with between support column 13 and former heating plate 1, between support column 13 and formpiston heating plate 3, heat shield 14 can effectively be avoided the heat transfer between former heating plate 1 and support column 13, between formpiston heating plate 3 and support column 13 and produce thermal loss, thus improves efficiency of utilization.
The bottom of cooling chamber 8 arranges at least one coolant outlet 16, and coolant outlet 16 is connected with water pump (not shown), can promptly be discharged to make the cooling water in cooling chamber 8.
Below in conjunction with Fig. 5 a-5d, formulate is carried out to the course of work of the present invention.Control Variation Features according to rapid thermal cycles mould temperature, rapid thermal cycles mold work process can be divided into mould Fast Heating, high temperature to keep, cooling and low temperature keep four-stage fast.
(1) mould rapid heat-up stage.As shown in Figure 5 a, when rapid thermal cycles forming process starts, former A and formpiston B is in die opening state.Electrical bar 5 is energized, and heats former heating plate 1 and formpiston heating plate 3.In heating process, the air layer (in cooling chamber 8) existed between former heating plate 1 and former coldplate 2, between formpiston heating plate 3 and formpiston coldplate 4 can play heat-blocking action; Heat shield 14 can avoid the heat trnasfer between former heating plate 1 and support column 13 and between formpiston heating plate 3 and support column 13 effectively.Like this, effectively can reduce the thermal loss of former heating plate 1 and formpiston heating plate 3, significantly improve the efficiency of heating surface of mould.The temperature of former heating plate 1 and formpiston heating plate 3 measured in real time by thermocouple 6, and when former heating plate 1 and formpiston heating plate 3 reach the temperature preset, electrical bar 5 power-off stops heating former heating plate 1 and formpiston heating plate 3.Subsequently, former A and formpiston B enters the high temperature maintenance stage.
(2) mould high temperature keeps the stage.As shown in Figure 5 b, in this stage, former A and formpiston B carries out matched moulds under the effect of forming machine clamping mechanism.Afterwards, for injection moulding, plastic melt is injected in mold cavity and carries out mold filling; For blowing, the parison of clamping carries out inflation under compressed air effect.Support column 13 can make former heating plate 1 and formpiston heating plate 3 effectively bear shock loading in forming process, reduces the deflection of heating plate, improves the form and dimensional precision of moulded products 19.
(3) the quick cooling stage of mould.As shown in Figure 5 c, in this stage, cooling water is passed into the cooling duct 7 in former coldplate 2 and formpiston coldplate 4, cooling water is as shown in Figs. 4a and 4b through jet nozzle 11(concrete structure) spray the back side 9 of former heating plate and the back side 10 of formpiston heating plate with higher speed, former heating plate 1 and formpiston heating plate 3 are cooled fast, the cooling water sprayed is discharged from the coolant outlet 16 bottom cooling chamber 8 under the effect of water pump, the cooling water reusable edible of discharge.The type of cooling of this employing water jet strengthens the heat transfer between cooling water and mold heated plate significantly, improves the cooling effectiveness of mould.When the temperature value that thermocouple 6 is measured is reduced to the calcining temperature of moulded products 19, water jet cooling package stops spraying former heating plate 1 and formpiston heating plate 3, and mould enters low temperature and keeps the stage.
(4) mould low temperature keeps the stage.As fig 5d, in this stage, former A and formpiston B carries out die sinking under the effect of forming machine clamping mechanism, takes out moulded products 19.
Subsequently, rapid thermal cycles forming process enters next circulation.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. the electric heat type heat cycle mould that cools fast of a water jet, comprise former and formpiston, former comprises interconnective former heating plate and former coldplate, formpiston comprises interconnective formpiston heating plate and formpiston coldplate, be provided with heating and temperature element in former heating plate and formpiston heating plate, the front of former heating plate and the front of formpiston heating plate surround mold cavity; It is characterized in that: between described former heating plate and former coldplate, between formpiston heating plate and formpiston coldplate, offer cooling chamber, binding face between described former heating plate and former coldplate, the binding face between formpiston heating plate and formpiston coldplate are provided with seal, be provided with water jet cooling package cooling water being injected into the former heating plate back side through cooling chamber in former coldplate, in formpiston coldplate, be provided with water jet cooling package cooling water being injected into the formpiston heating plate back side through cooling chamber;
Described water jet cooling package comprises cooling duct and jet nozzle, and cooling duct is opened in former coldplate and formpiston coldplate, and jet nozzle is arranged on the exit end face in cooling duct, and just to the back side of former heating plate and the back side of formpiston heating plate;
Described jet nozzle is connected by the exit end face of screw with cooling duct;
Described jet nozzle spherically shape protrudes to cooling chamber, offers multiple spray orifice of globally arranging in jet nozzle equably.
2. according to the electric heat type heat cycle mould that water jet according to claim 1 cools fast, it is characterized in that: between described former heating plate and former coldplate, be provided with support member between formpiston heating plate and formpiston coldplate, support member is through cooling chamber.
3. according to the electric heat type heat cycle mould that water jet according to claim 2 cools fast, it is characterized in that: between described support member and former heating plate, between support member and formpiston heating plate, be provided with heat shield.
4. according to the electric heat type heat cycle mould that water jet according to claim 1 cools fast, it is characterized in that: the bottom of described cooling chamber arranges at least one coolant outlet, coolant outlet water pump.
5. according to the electric heat type heat cycle mould that water jet according to claim 1 cools fast, it is characterized in that: described former heating plate and former coldplate are connected by screw, formpiston heating plate and formpiston coldplate are connected by screw.
6. the cooling means of the electric heat type heat cycle mould cooled fast according to the water jet according to any one of claim 1 to 5, it is characterized in that: utilize water jet cooling package to make cooling water directly spray the back side of former heating plate and the back side of formpiston heating plate, former heating plate and formpiston heating plate are cooled fast.
7. the cooling means of the electric heat type heat cycle mould cooled fast according to water jet according to claim 6, it is characterized in that: comprise the steps: that a. passes into cooling water toward the cooling duct in former coldplate and formpiston coldplate, start the water pump connected with coolant outlet simultaneously; B. cooling water is formed uniformly the High-Pressure Water that multiply is dispersion shape distribution after jet nozzle, and carry out injection cooling to the back side of former heating plate and formpiston heating plate, the cooling water be detained in cooling chamber is constantly discharged by water pump simultaneously; C., when former heating plate and formpiston heating plate are cooled to predetermined temperature, stop passing into cooling water toward cooling duct, after the cooling water in chamber to be cooled drains, stop pump working.
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| CN201310516758.6A CN103552222B (en) | 2013-10-28 | 2013-10-28 | The electric heat type heat cycle mould that water jet cools fast and cooling means thereof |
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| CN201310516758.6A CN103552222B (en) | 2013-10-28 | 2013-10-28 | The electric heat type heat cycle mould that water jet cools fast and cooling means thereof |
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| CN103552222B true CN103552222B (en) | 2016-01-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106079262A (en) * | 2016-06-25 | 2016-11-09 | 湖南惟晟信息科技有限公司 | The manufacture method of shaped article and mold for forming |
| CN106738731B (en) * | 2016-12-23 | 2018-08-28 | 重庆润跃机械有限公司 | The injection moulding apparatus that can uniformly cool down |
| CN109786893A (en) * | 2019-02-01 | 2019-05-21 | 苏州安靠电源有限公司 | Inflation type temperature-uniforming plate and battery pack |
| CN113334712A (en) * | 2021-06-07 | 2021-09-03 | 常州市科尚模塑有限公司 | Injection molding device for mold |
| CN114228082B (en) * | 2022-02-23 | 2022-05-10 | 徐州沃斯克机械设备有限公司 | Injection mold for reduction gear |
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| US5989008A (en) * | 1994-11-04 | 1999-11-23 | Wytkin; Andrew J | Multilayer mould apparatus and method |
| CN101823325A (en) * | 2010-05-18 | 2010-09-08 | 山东大学 | Electrically-heating and floating type rapid thermal circulation injection mould |
| CN203580057U (en) * | 2013-10-28 | 2014-05-07 | 华南理工大学 | Electrothermic type thermal cycle mold rapidly cooled through water jet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09136325A (en) * | 1995-11-15 | 1997-05-27 | Uchihama Kasei Kk | Mold apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989008A (en) * | 1994-11-04 | 1999-11-23 | Wytkin; Andrew J | Multilayer mould apparatus and method |
| CN101823325A (en) * | 2010-05-18 | 2010-09-08 | 山东大学 | Electrically-heating and floating type rapid thermal circulation injection mould |
| CN203580057U (en) * | 2013-10-28 | 2014-05-07 | 华南理工大学 | Electrothermic type thermal cycle mold rapidly cooled through water jet |
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