CN101941269A - Injection moulding machine - Google Patents
Injection moulding machine Download PDFInfo
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- CN101941269A CN101941269A CN2009101639365A CN200910163936A CN101941269A CN 101941269 A CN101941269 A CN 101941269A CN 2009101639365 A CN2009101639365 A CN 2009101639365A CN 200910163936 A CN200910163936 A CN 200910163936A CN 101941269 A CN101941269 A CN 101941269A
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Abstract
The invention relates to an injection moulding machine. The injection moulding machine is provided with a hydraulic-driven mould, a plasticizing unit used for melting plastic particles, and an injection mechanism used for injecting plastic melt fluid into the cavity of the mould, wherein the driving mechanism of the mould is provided with a heat exchanger; the heat exchanger can take away the heat of hydraulic fluid; the heat exchanger is connected with a cooling device supplied with cooling water in a flowing aspect; the mould is connected to a cooling loop or a temperature control loop; and the mould and die castings moulded in the mould are cooled or the temperature of the mould is controlled through the loops. The injection moulding machine is provided with a thermocompressor in the form of an adsorption refrigeration machine. A heat-carrying medium heated by the hydraulic loop flows through the inlet end of the thermocompressor, and a cooling medium in the cooling loop or the temperature control loop of the mould flows through the outlet end of the thermocompressor, so that loss heat taken away by the cooling water is favorable for cooling media in the temperature control loop or the cooling loop by using the thermocompressor, and the cooled media cool the mould.
Description
Technical field
The present invention relates to a kind of injection (mo(u)lding) machine that is used to produce plastic mould, it has a hydraulically powered mould, a plasticization unit and a jetting mechanism that is used for to the die cavity injected plastic liquation of mould that is used for the molten plastic particle, wherein the driving mechanism of mould has a heat exchanger, can take away the heat of hydraulic fluid by means of this heat exchanger, and heat exchanger and a cooling device that is supplied to cooling water are linking together aspect flowing, this outer mold is connected in a cooling circuit or the temperature control loop, obtains cooling or mould obtains temperature control by this loop mould and at the die casting of die for molding.
Background technology
Common injection (mo(u)lding) machine is realized the motion of mould by means of a fluid pressure drive device, thereby especially the half of mould of mould is hydraulically opened or closed.In order to plastify plastic grain, such injection (mo(u)lding) machine has a plasticization unit, screw rod for example loads plasticization unit and preferably is preferably electrically heated nozzle place by an electrically heated hot channel at one by a feeder plastic body of fusing is sent in the die cavity of mould.In order to realize the cooling of die casting at short notice, mould has cooling pipe or adjustment pipeline, a kind of corresponding cooling medium is transferred by these pipelines, thereby the die casting in mould and the mould can be cooled off fast, so that can opening mold and take out die casting.
The operation meeting that the injection (mo(u)lding) machine of plastic mould is produced in such being used to produces the loss heat by fluid pressure drive device, and up to the present this loss heat is brought in the atmosphere by a cooling pipe.For hydraulically powered injection (mo(u)lding) machine, this process realizes by one or more heat exchangers, a kind of heat-carrying agent for example current through heat exchanger, and the hydraulic oil of the drive unit heat exchanger of flowing through on the other hand.Hydraulic oil passes through this circulation with loss heat transferred heat-carrying agent, for example water.Heat-carrying agent is drawn towards the cooling device of an outside and obtains cooling there, for example by cooling tower or cooler.Type spare is cooled then by plastic grain moulding in the die cavity of mould of fusing.The cooling of indispensable here process heat/technology is on the one hand by the thermosetting that adds of the frictional heat that causes in the plasticization unit and nozzle or hot channel, and the cooling device and the temperature-adjusting device that are used to regulate mold temperature by the outside forms on the other hand.Cool cycles is moved with a kind of heat-carrying agent again, water for example, wherein in case of necessity through the heat-carrying agent of supercooling be transferred and the pipeline of the mould of flowing through after be cooled.This heat-carrying agent also is drawn towards outside cooling device or temperature-adjusting device and from guiding mould here once more into.
For a kind of like this method of operation, the essential process heat/technology cooling of the loss heat of injection (mo(u)lding) machine driving energy and the adjustment of mould and hot channel can not realize energy balance.
Summary of the invention
From prior art, task of the present invention is, proposes the injection (mo(u)lding) machine that a kind of energy balance of described type is improved.
Propose in order to solve this task, injection (mo(u)lding) machine has the thermocompressor of an adsorbent refrigerator form, through the heat-carrying agent of hydraulic circuit heating,
Especially current are through the arrival end of thermocompressor, its port of export and the cooling circuit of mould or the cooling medium in the temperature control loop are flowed through, thereby the loss heat of being taken away by cooling water is used for the cooling of the medium of temperature control loop or cooling circuit by means of thermocompressor, through the medium cooling die of supercooling.
Though use " cooling water " this address, the heat-carrying agent of other any appropriate can substitute cooling water and refer to this notion and understand.
By according to structure of the present invention, be not used to the cooling and the adjustment of essential technology cooling device from the loss heat of mechanism for driving injection moulding machine, and the cooling requirement of mould is met with preferably not having extra energy consumption.The loss heat of being taken away by cooling water or a kind of corresponding heat-carrying agent that comes from hydraulic circuit will be by a thermocompressor, and promptly so-called adsorbent refrigerator is converted into cold and is drawn towards the essential technology cooling device of mould.Heat energy is realized by for example heat exchanger to the transmission on the thermocompressor from the heat-carrying agent that is connected with hydraulic circuit.The transmission of heat energy (cold) from thermocompressor to the mold cools down loop can realize by means of a heat exchanger equally.
By according to structure of the present invention, the process heat that produces in hydraulic circuit will be used to the cooling of the heat-carrying agent in the cooling circuit.Therefore can realize almost that injection (mo(u)lding) machine drives the loss heat of energy and the essential cold energy balance of process heat/technology of adjustment of mould and hot channel.
Preferably injection (mo(u)lding) machine has an adjusting device, installs the cooling water flow of the hydraulic circuit of regulating mould and the cooling medium stream of temperature control loop or cooling circuit by means of this.
Preferably energy balance is regulated and realized to all heat generating components in the mould and all cooling pipes by the adjusting device of an adjusting device or this class in mould.
In case of necessity, be connected to a pump in the chilled(cooling) water return (CWR) of preferred standard solution hydraulic circuit.
Therefore the loss heat that comes from hydraulic system is passed on the thermocompressor (being similar to a heat pump) by heat-carrying agent and additional pump, so that form low temperature in this place's heat-carrying agent, this low temperature can be used for cooling die.
Can insert a pump in the cooling circuit of mould in addition, the temperature control loop that wherein has different temperatures in the mould can be regulated by one or more adjusting devices.
Therefore cooling medium is transported to mould by a pump, and can move the temperature control loop with different temperatures in the mould by one or more adjusting devices.
Can before the inlet of thermocompressor, insert a control valve in addition, be introduced into compressor or when heat is too high, introduce an external refrigeration device by means of the cooling water of this control valve through heating.
When heat was too high, unnecessary heat can be output to the cooling device of an outside by corresponding control valve.
Can before the inlet of thermocompressor, insert a control valve in addition, be transported to compressor by the cooling water of an outside heat generating components heating by this control valve extraly or alternatively.
When heat hour, essential extra heat can be supplied with by an outside heat generating components by corresponding control valve.
According to the present invention, the energy transmission of heat-carrying agent realizes by a thermocompressor, so this thermocompressor has substituted motor compressor up to the present commonly used.All heat generating components and consumption part all interconnect by a CCU and adjusted in hydraulic circuit and the mould, can have one or more regulating loops at this.
Description of drawings
Showed a kind of graphic embodiment in the accompanying drawing and further specified following.
Unique accompanying drawing has been showed a kind of injection (mo(u)lding) machine that has corresponding unit.
The specific embodiment
Showed an injection (mo(u)lding) machine 1 that has a hydraulically powered mould 2 (being two plate (Backen) moulds in the present embodiment) in the accompanying drawings.Be provided with a plasticization unit 3 that is used for the molten plastic particle in addition, at the feeder of a plastic grain of this 4 expression.Plasticization unit 3 carries out the transition in the die cavity of mould 2 through a hot channel 5 and a nozzle.2 the drive unit 6 of being used to move moulds is only represented with sketch.Driving realizes by a hydraulic system.Hydraulic fluid is guided through a heat exchanger 7, and a kind of on the other hand heat-carrying agent, especially cooling water flow is through heat exchanger.Coolant intake pipe road and output channel indicate with 8 and 9 respectively.
This outer mold 2 is connected with a cooling circuit or adjustment loop.Flow ipe and reflux line indicate with 10 and 11 respectively.Injection (mo(u)lding) machine is equipped with the thermocompressor 12 of an adsorbent refrigerator form in addition.Through the flow through entrance side of this refrigeration machine of the cooling water 9 of hydraulic circuit heating.A corresponding connecting pipe indicates with 13.The cooling water of heat is transfused to by pipeline 9,13 and fails back by pipeline 14, and introduces heat exchanger 7 through piping 8 once more in case of necessity.The heat of the cooling water that transports is used to change into the cooling energy in thermocompressor.Compressor 12 has a cooling circuit that has an output channel 15 and a flow ipe 16 in addition.Output channel 15 is connected with the pipeline 10 of mould by a valve, and cold thus medium can be used for the cooling of mould 2.Reflux through the cooling medium of heating by pipeline 11 and flow back in the loop through piping 16 in case of necessity.Be used to the cooling of adjustment loop or cooling circuit medium in this way through the cooling water of hydraulic circuit heating.Can in the loop, be provided with in case of necessity pump 17 or 18 and various distributing valve be used for the outflow of medium.Heat energy outside 19 places can the amount of imports or export unnecessary heat energy in addition.Can additionally drain or import heat-carrying agent at 20 places.
Various temperature sensor indicates with " T ", and their measured value is processed and be used to the control of running in a control device that does not draw.
The method of operation of this device is further specified in an embodiment.The loss heat is brought atmosphere into by an external refrigeration device that is positioned at 21 places, thereby the hydraulic oil in the fluid pressure drive device 6 of injection (mo(u)lding) machine 1 preferably obtains cooling by a table oil heat exchanger by heat exchanger 7.
Tributary through overregulating of hydraulic system heat is drawn towards thermocompressor 12 through a triple valve 22.Thermocompressor 12 cools off about 5 degree Kelvins with this heat tributary and will carry back once more in the hydraulic pressure circulation through the medium of supercooling by reflux line 14.
By the heat absorption in the compressor 12, be arranged in the cold-producing medium vaporising under vacuum of compressor and on condenser, cool off.Condensed cold-producing medium with lower temperature in the condensation chamber inner accumulated.Here produce the lower cooling medium of temperature and be transported to heat exchanger 24, be used for the cooling of mould, and use for mold cools down circulation (pipeline 10) thus by a pump 17 by a heat exchanger 23.
The heat that the device that is condensed absorbs is regulated and is brought to once more on another consumable part or the aftercooler in aftercooler through a triple valve 25.As an alternative, adjusting can realize by the controlled blower fan of rotating speed.
Cooling water is carried also by a pump 18 by heat exchanger 24, and (through piping 11) comes ground cooling again by mould 2.Here cooling water flow is through one or more flow control valves 26, thus the temperature of each bar cooling pipe adjusted ( pipeline 10 or 11 through-flow).
The necessary heat of evaporation process in the compressor 12 will be measured and be regulated by a central computer 29 by thermo detector 27,28, and this computer links to each other with regulating element with corresponding measuring cell.These connect owing to clear reason is not drawn.
Less when the heat that comes from the hydraulic system cooling device, when for example device starts, can supply with the extra heat of the storage heater that comes from an additional heating device by a motor-driven valve, for example a joint on piping 13.As an alternative, extra cooling requirement or heat demand are regulated through valve 30 by the cooler or the adjustment instrument of outside.
The cooling requirement that is used for cooling die is by the thermo detector 31,32 on the mould reflux line 11, hot channel 5, plasticization unit 3 and/or the cooling water beginning stream place obtain by central computer 29, and be met by the heat transmission in the thermocompressor 12.The heat demand of production mechanism and cold demand are monitored and are adjusted by means of central computer.
The present invention is not limited to this embodiment, but has multiple variation in the scope of disclosure.
All disclosed new single feature and assemblage characteristics in this specification and/or accompanying drawing all are regarded as essence according to the invention.
Claims (6)
1. be used to produce the injection (mo(u)lding) machine (1) of plastic mould, it has hydraulically powered mould (2), be used for the plasticization unit (3) of molten plastic particle and be used for jetting mechanism to the die cavity injected plastic liquation of mould (2), wherein the driving mechanism (6) of mould (2) has heat exchanger (7), can take away the heat of hydraulic fluid by means of this heat exchanger, and heat exchanger and the cooling device that is supplied to cooling water are linking together aspect flowing, mould (2) is connected in cooling circuit or the temperature control loop, obtain cooling or mould (2) obtains temperature control by this loop mould (2) and at the die casting of die for molding, it is characterized in that, injection (mo(u)lding) machine (1) has the thermocompressor (12) of adsorbent refrigerator form, heat-carrying agent through the hydraulic circuit heating, especially cooling water is at the entrance side described refrigeration machine of flowing through, and the cooling circuit of mould (2) or the cooling medium in the temperature control loop are at the outlet side described refrigeration machine of flowing through, thereby the loss heat of being taken away by cooling water is used for the cooling of the medium of temperature control loop or cooling circuit by means of thermocompressor (12), through the medium cooling die (2) of supercooling.
2. injection (mo(u)lding) machine as claimed in claim 1 is characterized in that, injection (mo(u)lding) machine (1) has adjusting device, can regulate the cooling water flow of hydraulic circuit of mould (2) and the cooling medium stream of temperature control loop or cooling circuit by means of this device.
3. as the injection (mo(u)lding) machine of claim 1 or 2, it is characterized in that, be connected to pump in the chilled(cooling) water return (CWR) of hydraulic circuit.
4. as each injection (mo(u)lding) machine in the claim 1 to 3, it is characterized in that be connected to pump (18) in the cooling circuit of mould (2), the temperature control loop that wherein has different temperatures in the mould (2) can be regulated by one or more adjusting devices.
5. as each injection (mo(u)lding) machine in the claim 1 to 4, it is characterized in that, before the inlet of thermocompressor (12), be connected to control valve, be introduced into compressor (12) or when heat is too high, introduce the external refrigeration device by means of the cooling water of this control valve through heating.
6. as each injection (mo(u)lding) machine in the claim 1 to 5, it is characterized in that, before the inlet of thermocompressor (12), be connected to a control valve, extraly or the cooling water that is alternatively heated by outside heat generating components be transported to compressor (12) by this control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101639365A CN101941269A (en) | 2009-07-03 | 2009-07-03 | Injection moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101639365A CN101941269A (en) | 2009-07-03 | 2009-07-03 | Injection moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101941269A true CN101941269A (en) | 2011-01-12 |
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ID=43433568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101639365A Pending CN101941269A (en) | 2009-07-03 | 2009-07-03 | Injection moulding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101941269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302826A (en) * | 2012-03-15 | 2013-09-18 | 曼盛包装（上海）有限公司 | Cooling method of circulating water for injection mold |
| CN111823527A (en) * | 2020-07-14 | 2020-10-27 | 谢焕演 | Energy-saving and environment-friendly injection mold |
-
2009
- 2009-07-03 CN CN2009101639365A patent/CN101941269A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302826A (en) * | 2012-03-15 | 2013-09-18 | 曼盛包装（上海）有限公司 | Cooling method of circulating water for injection mold |
| CN103302826B (en) * | 2012-03-15 | 2016-03-09 | 曼盛包装（上海）有限公司 | A kind of injection mold is cooled with circulating water method |
| CN111823527A (en) * | 2020-07-14 | 2020-10-27 | 谢焕演 | Energy-saving and environment-friendly injection mold |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110112 |