CN102294806A - Cooling and heating device of injection molding mold - Google Patents
Cooling and heating device of injection molding mold Download PDFInfo
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- CN102294806A CN102294806A CN2011102696235A CN201110269623A CN102294806A CN 102294806 A CN102294806 A CN 102294806A CN 2011102696235 A CN2011102696235 A CN 2011102696235A CN 201110269623 A CN201110269623 A CN 201110269623A CN 102294806 A CN102294806 A CN 102294806A
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- cooling
- reversal valve
- compressor
- reversing valve
- heat exchanger
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Abstract
The invention discloses a cooling and heating device of an injection molding mold. The device comprises a compressor (1), a heat exchanger (2), a throttling element (3), four reversing valves and a connecting pipeline (4); a cooling and heating loop (6) is formed in the injection molding mold (5); the cooling and heating loop (6) is provided with two accesses; and the exhaust end of the compressor is connected with the reversing valve I, the air intake end of the compressor is connected with the reversing valve II, the other two connecting ends of the reversing valve I and the reversing valve II are respectively connected with one end of the heat exchanger and the first access, the other end of the heat exchanger is connected with the reversing valve III and the reversing valve IV, the throttling element is connected in series between the reversing valve III and the reversing valve IV, and the reversing valve III and the reversing valve IV are also connected with the second access. By adopting the device, the mold is cooled uniformly, and dirt is not produced in a cooling passage; and the cooling part and the heating part of the device are integrated, so that cooling and heating of the mold are realized in one device.
Description
Technical field
The present invention relates to the injection mold field, is a kind of cooling and heater of injection mold specifically.
Background technology
In injection moulding, the temperature of mould directly has influence on Products Quality and production efficiency.Because it is the performance of various plastics is different with the moulding process requirement, also different to the requirement of mold temperature.The temperature that generally is expelled to plastics in the mould is 200-300 ℃, after melt is solidified into goods, and the demoulding from the lower mould of temperature.The reduction of mold temperature mainly relies on and feeds cooling medium in the mould, heat is taken away, depend primarily on the cooling effect of cooling system the cool time of injection mold, according to statistics, account for 2/3 of the whole infusion cycles cycle cool time of mould, therefore shortening the cool time in infusion cycles cycle is the key of enhancing productivity; And for the plastics of the mould temperature of having relatively high expectations (80-120 ℃), if mould is bigger, area of dissipation is wide, sometimes depend merely on and inject high temperature plastics to come heating mould be not enough, heater need be set, the effect of heater is the thermal loss of compensation injection mold in injection moulding, prevents the plastics premature setting of the fusion in the mould.
But what the injection mold cooling of prior art was more is the available cycles water cooling, usually adopts cooling-water machine to cool off when mold cools down is had relatively high expectations; Resistance, deep fat or hot water conduction heating are generally adopted in the heating of injection mold.The subject matter of its existence is as follows: (1), cooling system and heating system are diverse device, in the time of need cooling off as mould, use cooling system, when mould need heat, use heating system, and two system's independent operatings are not optimized; (2), cooling system uses after a period of time the easily fouling in the cooling circuit of mould of the solid deposits in the water, reduction heat transfer efficiency; (3), during cooling die, the temperature of water will raise, there is certain temperature difference in the mould water in-out port, it is uneven and cause product quality to descend to be easy to generate temperature control.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of and cool off evenly, can in the cooling duct, not produce the cooling and the heater of the injection mold of dirt, the cooling segment of this device and heating part are one, and cooling and heating to mould are realized in a covering device.
Technical solution of the present invention is, a kind of cooling and heater of injection mold of following structure are provided, comprise compressor, heat exchanger, restricting element, four reversal valves and connecting line, on injection mold, be provided with cooling and heating circuit, described cooling and heating circuit are provided with two import and export, the exhaust end of described compressor connects reversal valve I, the inlet end of compressor connects reversal valve II, two other link of described reversal valve I and reversal valve II is imported and exported with an end and first of heat exchanger respectively and is connected, the other end of described heat exchanger is connected with reversal valve IV with reversal valve III, be in series with restricting element between described reversal valve III and the reversal valve IV, reversal valve III also is connected with second import and export with reversal valve IV.
Adopt above structure, the present invention compared with prior art has the following advantages: adopt structure of the present invention, utilize air conditioner heat pump system that injection mold is cooled off and heat, the present invention is different from general air conditioner heat pump system again, the design of four three-way diverter valves can be controlled the flow direction of working medium (as: cold-producing medium) in connecting line preferably, and working medium flows to different connecting lines under making cooling and heating two operating modes, convenient refrigeration, the switching that heats, the present invention's cooling is good with the Controllable Temperature of heating, can make that mold cools down is even, can in the cooling duct, not produce dirt, and the cooling segment of this device and heating part be one, and cooling and heating to mould are realized in a covering device.
As improvement, described reversal valve is a three-way diverter valve, and the flow direction of working medium can be better controlled in this design.
As improvement, described cooling and heater also comprise controller, described controller is electrically connected with compressor and four reversal valves, like this, by controller control compressor and reversal valve work, can control the frequency of compressor operation, in time regulate the switching direction of reversal valve, and then regulate the size and the flow direction of working medium flow.
As improvement, described restricting element is capillary or expansion valve, can select suitable restricting element according to the size of injection mold, when mould hour can adopt capillary, when mould is big, then adopt expansion valve, promptly can select suitable restricting element according to the size of refrigeration (heat) amount.
Description of drawings
Accompanying drawing is the cooling of injection mold of the present invention and the structural representation of heater.
As shown in the figure: 1, compressor, 2, heat exchanger, 3, restricting element, 4, connecting line, 5, injection mold, 6, cooling and heating circuit, 7, reversal valve I, 8, reversal valve II, 9, first imports and exports, and 10, reversal valve III, 11, reversal valve IV, 12, second import and export 13, plug, 14, deflection plate.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in the figure, the cooling of injection mold of the present invention and heater, comprise compressor 1, heat exchanger 2, restricting element 3, four reversal valves and connecting line 4, on injection mold 5, be provided with cooling and heating circuit 6, described cooling and heating circuit 6 are provided with two import and export, the exhaust end of described compressor 1 connects reversal valve I7, the inlet end of compressor 1 connects reversal valve II8, two other link of described reversal valve I7 and reversal valve II8 is imported and exported 9 with an end and first of heat exchanger 2 respectively and is connected, the other end of described heat exchanger 2 is connected with reversal valve IV11 with reversal valve III10, be in series with restricting element 3 between described reversal valve 10 and the reversal valve IV11, reversal valve III10 also is connected with second import and export 12 with reversal valve IV11.
Described reversal valve is a three-way diverter valve, also is not limited to three-way diverter valve certainly, also can adopt four-way change-over valve, if adopt four-way change-over valve, owing to Duoed a link than triple valve, can carry out otherwise designed to this link that has more.
Described cooling and heater also comprise controller, and described controller is electrically connected with compressor and four reversal valves.Described restricting element 3 is capillary or expansion valve.
Described first import and export and second import and export are the import and export of working medium on the injection mold, and in refrigeration, first import and export are to export, and second import and export are import, and when heating, first import and export are import, and second import and export are outlet; Described cooling and heating circuit for the sealing since the cooling with heating circuit processing in, many positions in loop are got through, so need to adopt plug 13 with its sealing, and in the loop, being provided with deflection plate 14, deflection plate can make the working medium one-way flow, and anti-backflow.
Operation principle of the present invention:
1, when needs cools off mould.Air conditioner heat pump system plays a part air conditioner cooling system, open compressor, working medium is under the effect of compressor, pressure increases, temperature raises, the gaseous working medium that becomes HTHP enters in the heat exchanger, this moment, heat exchanger played the condenser effect of air conditioner cooling system, and working medium and extraneous air heat exchange are condensed into highly pressurised liquid with cooling behind the heat transferred air, by becoming the two-phase mixture of low-temp low-pressure after the restricting element throttling, enter into the cooling circuit of mould, in cooling circuit, evaporate, from mould, absorb its needed gasification latent heat, at this moment, mould is equivalent to the evaporimeter effect of refrigerated air-conditioning system.Working medium enters into compressor after becoming the working medium of cryogenic gaseous through cooling circuit, circulation and so forth.The working medium needed heat that freezes mainly is the gasification latent heat that relies on himself, and its temperature basically and do not change.If the water refrigeration, the heat that absorbs mould mainly is the sensible heat that relies on water, and mold temperature reduces, and the temperature of water raises.
In the whole circulation process, working medium absorbs the heat of mould in cooling circuit, thereby reach the purpose of refrigeration, heat exchanger is the equipment of quantity of heat given up, and the heat of drawing from mould is taken away by outside air in heat exchanger 9 together with the heat that merit transformed of compressor consumption.According to the second law of thermodynamics, the merit that compressor consumed (electric energy) has played compensating action, and working medium is constantly absorbed heat from mould, and to the air heat release, thereby realize mould is cooled off.
2, when needs heat mould, by the flow direction of working medium in controller and the commutator change air conditioner heat pump system, at this moment, air conditioner heat pump system plays a part heat pump.Working medium is under the compressor effect, the gaseous working medium that becomes HTHP enters into cooling circuit, mould is heated, this moment, mould played a part condenser, working medium is condensed into highly pressurised liquid by mould heat absorption back cooling, by becoming the two-phase mixture of low-temp low-pressure after the restricting element throttling, enter in the heat exchanger, working medium is evaporated at heat exchanger, from the heat exchanger of flowing through, absorb the dry flue gas that heat becomes low-temp low-pressure in the air in the external world, enter into compressor, at this moment, heat exchanger plays a part evaporimeter, and so forth circulation.
Controller is by changing the frequency of compressor variable driving power, can in a big way, regulate the rotating speed of compressor as required, make that system's refrigerating capacity and heating capacity are changed in a big way, controller also can be controlled the pressure of working medium and regulate chilling temperature and heating-up temperature.
Below only just preferred embodiment of the present invention be described, but can not be interpreted as it is restriction to claim.The present invention not only is confined to above embodiment, and its concrete structure allows variation.In a word, all various variations of being done in the protection domain of independent claims of the present invention are all in protection scope of the present invention.
Claims (4)
1. the cooling of an injection mold and heater, comprise compressor (1), heat exchanger (2), restricting element (3), four reversal valves and connecting line (4), it is characterized in that: on injection mold (5), be provided with cooling and heating circuit (6), described cooling and heating circuit (6) are provided with two import and export, the exhaust end of described compressor (1) connects reversal valve I (7), the inlet end of compressor (1) connects reversal valve II (8), two other link of described reversal valve I (7) and reversal valve II (8) is imported and exported (9) with an end and first of heat exchanger (2) respectively and is connected, the other end of described heat exchanger (2) is connected with reversal valve IV (11) with reversal valve III (10), be in series with restricting element (3) between described reversal valve (10) and the reversal valve IV (11), reversal valve III (10) also is connected with second import and export (12) with reversal valve IV (11).
2. the cooling of injection mold according to claim 1 and heater, it is characterized in that: described reversal valve is a three-way diverter valve.
3. the cooling of injection mold according to claim 1 and heater, it is characterized in that: described cooling and heater also comprise controller, described controller is electrically connected with compressor and four reversal valves.
4. the cooling of injection mold according to claim 1 and heater, it is characterized in that: described restricting element (3) is capillary or expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102696235A CN102294806A (en) | 2011-09-09 | 2011-09-09 | Cooling and heating device of injection molding mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102696235A CN102294806A (en) | 2011-09-09 | 2011-09-09 | Cooling and heating device of injection molding mold |
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| Publication Number | Publication Date |
|---|---|
| CN102294806A true CN102294806A (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102696235A Pending CN102294806A (en) | 2011-09-09 | 2011-09-09 | Cooling and heating device of injection molding mold |
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| CN (1) | CN102294806A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105094178A (en) * | 2015-09-15 | 2015-11-25 | 苏州南航腾龙科技有限公司 | Medium flow type rapid heating and cooling temperature control rapid conversion device |
| CN111196018A (en) * | 2018-11-20 | 2020-05-26 | 泰瑞机器股份有限公司 | Thermal cycle energy-saving injection molding machine |
| CN114074452A (en) * | 2020-08-21 | 2022-02-22 | 汉达精密电子(昆山)有限公司 | Vapor compressed gas combined rapid cooling and rapid heating system and method |
| CN117245071A (en) * | 2023-09-21 | 2023-12-19 | 宁波容鑫模具技术有限公司 | Die casting mold cooling device and method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005007736A (en) * | 2003-06-19 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Mold temperature adjusting device |
| CN101472720A (en) * | 2006-04-20 | 2009-07-01 | 卡拉工业公司 | Melt cooler and valving system for an underwater pelletizingprocess |
| CN102152456A (en) * | 2010-12-17 | 2011-08-17 | 东莞市中冠科技发展有限公司 | Energy-saving mould thermoregulator |
| CN202241873U (en) * | 2011-09-09 | 2012-05-30 | 中国计量学院 | Cooling and heating device of injection mold |
-
2011
- 2011-09-09 CN CN2011102696235A patent/CN102294806A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005007736A (en) * | 2003-06-19 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Mold temperature adjusting device |
| CN101472720A (en) * | 2006-04-20 | 2009-07-01 | 卡拉工业公司 | Melt cooler and valving system for an underwater pelletizingprocess |
| CN102152456A (en) * | 2010-12-17 | 2011-08-17 | 东莞市中冠科技发展有限公司 | Energy-saving mould thermoregulator |
| CN202241873U (en) * | 2011-09-09 | 2012-05-30 | 中国计量学院 | Cooling and heating device of injection mold |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105094178A (en) * | 2015-09-15 | 2015-11-25 | 苏州南航腾龙科技有限公司 | Medium flow type rapid heating and cooling temperature control rapid conversion device |
| CN111196018A (en) * | 2018-11-20 | 2020-05-26 | 泰瑞机器股份有限公司 | Thermal cycle energy-saving injection molding machine |
| CN114074452A (en) * | 2020-08-21 | 2022-02-22 | 汉达精密电子(昆山)有限公司 | Vapor compressed gas combined rapid cooling and rapid heating system and method |
| CN114074452B (en) * | 2020-08-21 | 2024-03-19 | 汉达精密电子(昆山)有限公司 | Vapor compressed gas combined quenching and rapid heating system and method |
| CN117245071A (en) * | 2023-09-21 | 2023-12-19 | 宁波容鑫模具技术有限公司 | Die casting mold cooling device and method thereof |
| CN117245071B (en) * | 2023-09-21 | 2024-04-26 | 宁波容鑫模具技术有限公司 | Die casting mold cooling device and method thereof |
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Application publication date: 20111228 |