CN202241873U - Cooling and heating device of injection mold - Google Patents
Cooling and heating device of injection mold Download PDFInfo
- Publication number
- CN202241873U CN202241873U CN2011203419381U CN201120341938U CN202241873U CN 202241873 U CN202241873 U CN 202241873U CN 2011203419381 U CN2011203419381 U CN 2011203419381U CN 201120341938 U CN201120341938 U CN 201120341938U CN 202241873 U CN202241873 U CN 202241873U
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- Prior art keywords
- cooling
- reversal valve
- compressor
- injection mold
- change valve
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Abstract
The utility model discloses a cooling and heating device of an injection mold, comprising a compressor (1), a heat interchanger (2), a throttling element (3), four change valves and a connecting pipeline (4), a cooling and heating loop (6) is arranged on an injection mould, the cooling and heating loop (6) is provided with two inlet and outlet ports, the air discharge end of the compressor is connected with a change valve I, the air inlet end of the compressor is connected with a change valve II, other two connecting ends of the change valve I and the change valve II are respectively connected with one end of the heat interchanger and a first inlet and outlet port, the other end of the heat interchanger is connected with a change valve III and a change valve IV, the throttling element is connected between the change valve III and the change valve IV in a serial way, and the change valve III and the change valve IV are also connected with a second inlet and outlet port. The cooling and heating device can cool a mold evenly, and dirt can not be generated in a cooling channel, and the cooling part and the heating part of the cooling and heating device are integrated so that the cooling and the heating of the mold can be realized in one device.
Description
Technical field
The utility model 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, depends merely on sometimes to inject high temperature plastics to come heating mould be not enough, and 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, the cooling of the injection mold of prior art is more be the available cycles water-cooled but, when mold cools down is had relatively high expectations, usually adopt cooling-water machine to cool off; Resistance, deep fat or hot water conduction heating are generally adopted in the heating of injection mold.The subject matter of its existence is following: (1), cooling system and heating system are diverse device, in the time of need cooling off like 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 easy 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.
The utility model content
The technical problem that the utility model will solve 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.
The technical solution of the utility model 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, and 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, and 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 utility model compared with prior art has the following advantages: adopt the utility model structure; Utilize air conditioner heat pump system that injection mold is cooled off and heat, the utility model is different from general air conditioner heat pump system again, and 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; The switching of conveniently freezing, heating, the utility model cooling is good with the Controllable Temperature property of heating, can not make mold cools down evenly, 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, and described controller is electrically connected with compressor and four reversal valves, like this; Through 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 cooling and the structural representation of heater of the injection mold of the utility model.
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 import and export 10, reversal valve III, 11, reversal valve IV; 12, second import and export 13, plug, 14, deflection plate.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
As shown in the figure; The cooling of the injection mold of the utility model and heater; Comprise compressor 1, heat exchanger 2, restricting element 3, four reversal valves and connecting lines 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 I 7; The inlet end of compressor 1 connects reversal valve II 8, and 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, and 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; Event needs 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.
The operation principle of the utility model:
1, when needs cools off mould.Air conditioner heat pump system plays a part air conditioner cooling system, compressor and starting, and working medium is under the effect of compressor; Pressure increases, and temperature raises, and 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; Through 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, so reciprocation cycle.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 from mould, drawing 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, through 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, and the gaseous working medium that becomes HTHP enters into cooling circuit, and mould is heated; This moment, mould played a part condenser, and working medium is condensed into highly pressurised liquid by mould heat absorption back cooling, through 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, absorbs 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, so reciprocation cycle.
Controller is through 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 able to change in a big way, controller also can be controlled the pressure of working medium and regulate chilling temperature and heating-up temperature.
Below only be described, but can not be interpreted as it is restriction claim with regard to the utility model preferred embodiment.The utility model not only is confined to above embodiment, and its concrete structure allows variation.In a word, all various variations of in the protection domain of the utility model independent claims, being done are all in the protection domain at the utility model.
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), and 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, and 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 |
|---|---|---|---|
| CN2011203419381U CN202241873U (en) | 2011-09-09 | 2011-09-09 | Cooling and heating device of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203419381U CN202241873U (en) | 2011-09-09 | 2011-09-09 | Cooling and heating device of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202241873U true CN202241873U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203419381U Expired - Fee Related CN202241873U (en) | 2011-09-09 | 2011-09-09 | Cooling and heating device of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202241873U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294806A (en) * | 2011-09-09 | 2011-12-28 | 中国计量学院 | Cooling and heating device of injection molding mold |
| CN104260300A (en) * | 2014-09-29 | 2015-01-07 | 重庆开确科技有限公司 | Electric heating wire type upper cooling injection mold for CPU fan blades |
| CN106945246A (en) * | 2017-03-24 | 2017-07-14 | 运城学院 | A kind of injecting molding die equipment |
| CN108189352A (en) * | 2017-12-29 | 2018-06-22 | 重庆市银盛模具有限公司 | Convenient for the injection mold of cooling |
| CN109910254A (en) * | 2019-01-31 | 2019-06-21 | 贵州省材料产业技术研究院 | A kind of temperature control system of molding mold cavity high-temperature gas circulation |
| CN111469366A (en) * | 2020-04-13 | 2020-07-31 | 青岛科技大学 | Injection mold temperature control method and device |
-
2011
- 2011-09-09 CN CN2011203419381U patent/CN202241873U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294806A (en) * | 2011-09-09 | 2011-12-28 | 中国计量学院 | Cooling and heating device of injection molding mold |
| CN104260300A (en) * | 2014-09-29 | 2015-01-07 | 重庆开确科技有限公司 | Electric heating wire type upper cooling injection mold for CPU fan blades |
| CN104260300B (en) * | 2014-09-29 | 2019-06-18 | 重庆开确科技有限公司 | The cooling injection molding upper mold of electric heating wire type band for cpu fan leaf |
| CN106945246A (en) * | 2017-03-24 | 2017-07-14 | 运城学院 | A kind of injecting molding die equipment |
| CN106945246B (en) * | 2017-03-24 | 2018-10-02 | 运城学院 | A kind of injecting molding die equipment |
| CN108189352A (en) * | 2017-12-29 | 2018-06-22 | 重庆市银盛模具有限公司 | Convenient for the injection mold of cooling |
| CN108189352B (en) * | 2017-12-29 | 2020-10-27 | 重庆市银盛模具有限公司 | Injection mold convenient to cool |
| CN109910254A (en) * | 2019-01-31 | 2019-06-21 | 贵州省材料产业技术研究院 | A kind of temperature control system of molding mold cavity high-temperature gas circulation |
| CN111469366A (en) * | 2020-04-13 | 2020-07-31 | 青岛科技大学 | Injection mold temperature control method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120909 |