CN202781741U - Highlight injection mould heating and cooling device - Google Patents

Highlight injection mould heating and cooling device Download PDF

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Publication number
CN202781741U
CN202781741U CN 201220416796 CN201220416796U CN202781741U CN 202781741 U CN202781741 U CN 202781741U CN 201220416796 CN201220416796 CN 201220416796 CN 201220416796 U CN201220416796 U CN 201220416796U CN 202781741 U CN202781741 U CN 202781741U
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CN
China
Prior art keywords
pipeline
cooling
heat
mold cavity
electrically heated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220416796
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Chinese (zh)
Inventor
张明磊
王家昌
王小新
王国琪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hisense Mould Co Ltd
Original Assignee
Qingdao Hisense Mould Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Hisense Mould Co Ltd filed Critical Qingdao Hisense Mould Co Ltd
Priority to CN 201220416796 priority Critical patent/CN202781741U/en
Application granted granted Critical
Publication of CN202781741U publication Critical patent/CN202781741U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a highlight injection mould heating and cooling device, which includes a mould cavity, electric heating rods, a pump, a heat exchange medium storage container and a controller, wherein pipelines are arranged on the mould cavity; the electric heating rods are arranged inside the pipelines; clearances for introducing heat exchange medium in are reserved between the electric heating rods and the inner walls of the pipelines; a No.1 control valve is arranged at one end of each pipeline, and a No.2 control valve is arranged at the other end of each pipeline; a temperature sensor is arranged on the mould cavity, and pressure sensors are arranged inside the pipelines; the temperature sensor and the pressure sensors are connected with the inside of the controller; and the pump, the control valves and the electric heating rods are all controlled by the controller. According to the utility model, the mould cavity can be heated to a higher temperature without the need of an external high-pressure boiler or a fixed connecting pipe, and both the transfer velocity and efficiency of heat energy are high; and the highlight injection mould heating and cooling device has the characteristics of better safety and reliability, higher energy transfer efficiency, much shortened injection period and the like.

Description

A kind of high-gloss injection mold heating-cooling device
Technical field
The utility model relates to a kind of high-gloss injection mold heating-cooling device.
Background technology
Injection moulding all is widely used in industrial every field as one of forming method important in the plastic processing.Along with plastic products use increasingly extensive, people are more and more higher to the requirement of precision, surface quality and the intensity of plastic products, still, and for some defectives in the injection moulding process, poor etc. such as: weld mark, current mark, plastic products presentation quality, common injection molding process can't solve at all.In actual production process, mainly improve surface quality and the surface strength of plastic products by the plastic spraying technology, be used for covering up the blemish of plastic products.Surface spraying is the secondary operations to plastic products, adopts the surface spraying technology, not only wastes raw materials for production, wastes energy, and increases the production cost of plastic products, and can cause serious environmental pollution, harm operating personnel's health of human body.
The high light of steam that occurred in nearly 2 years can obtain the product of Gao Guang, the molten trace of nothing without molten trace injection-die, the technique that this mould adopts is in process of injection molding, die cavity or the core rod of injection mold are quickly heated up to the heat distortion temperature that approaches or be higher than polymer, then polymer is expelled in the mold cavity, in injection and pressure maintaining period, just begin quick cooling die die cavity or core rod, after mold temperature is cooled to a certain degree, open mould, take out product.But this mould requires to use high-temperature steam, and energy consumption is high, and security is low, and mould is produced complicated, and the use state that colds and heat succeed each other simultaneously makes the life-span of die cavity and maintenance all have certain defective.
The utility model content
Task of the present utility model is to solve the defective that injection mold heating and cooling mode exists in the prior art, and a kind of high-gloss injection mold heating-cooling device is provided.
Its technical solution is:
A kind of high-gloss injection mold heating-cooling device comprises mold cavity, electrically heated rod, pump, heat-exchange medium storage container and controller; Be provided with pipeline at mold cavity, electrically heated rod is arranged in the pipeline, leave between the inwall of electrically heated rod and pipeline be used to the gap that passes into heating or the heat of cooling medium of exchange, one end of pipeline is the inflow end of heat-exchange medium, be provided with control valve No. one at the inflow end, the other end of pipeline is the outflow end of heat-exchange medium, is provided with control valve No. two at outflow end; Be provided with temperature sensor at mold cavity, in pipeline, be provided with pressure sensor; Said temperature sensor, pressure sensor access controller, said pump, a control valve, No. two control valves, electrically heated rods are controlled by controller.
Above-mentioned pipeline has some, and the distance between each pipeline and the mold cavity surface is 6mm~15mm, and the diameter of pipeline is 8mm~16mm; The diameter of electrically heated rod is than the little 2mm~8mm of diameter of pipeline.
Above-mentioned pipeline is divided into four pipeline group, is laid in respectively on the surrounding of mold cavity; For any one pipeline group, the pipeline in this pipeline group shares a control valve and No. two control valves.
The utility model can have following useful technique effect:
In the utility model, between mold cavity wall and electrically heated rod, pass into the heat hot medium of exchange, when electrically heated rod heats, in pipeline, form confined space, so that the boiling point of liquid constantly promotes along with the rising of pressure, thereby greatly improve the efficiency of heating surface of mold cavity; During cooling, because the existence of electrically heated rod has reduced the pipeline section area, thereby improved the flow velocity of the heat of cooling medium of exchange, improved the cooling effectiveness of mold cavity.The utility model does not need external high-pressure boiler and fixing tube connector, just mold cavity can be heated to higher temperature, and the transfer rate of its heat energy and efficient are all very high.
Advantage of the present utility model is in particular in following several aspect:
1, the product surface gloss is high, has exempted follow-up spraying process.
2, eliminated the fusion line on product surface.
3, do not need the high-pressure boiler of traditional handicraft to come for the injection mold heating, more safe and reliable.
4, the conversion efficiency of the energy is higher.
5, injection cycle can further shorten.
Description of drawings
Below in conjunction with accompanying drawing and the specific embodiment the utility model is illustrated further:
Fig. 1 is the structural principle schematic diagram of a kind of embodiment of a kind of high-gloss injection mold heating-cooling device in the utility model, shows its planar structure.
Fig. 2 is that a kind of partial cutaway of Fig. 1 mode is shown the structural principle schematic diagram, shows a kind of decomposing state.
Fig. 3 is that the another kind of partial cutaway of Fig. 1 mode is shown the structural principle schematic diagram.
Fig. 4 is the cross section structure principle schematic of mold cavity in Fig. 1 mode.
The specific embodiment
In conjunction with Fig. 1 to Fig. 4, a kind of high-gloss injection mold heating-cooling device comprises mold cavity 1, electrically heated rod 2, pump, heat-exchange medium storage container and controller.Be provided with pipeline 3 at mold cavity, electrically heated rod is arranged in the pipeline, leave between the inwall of electrically heated rod and pipeline be used to the gap 4 that passes into heating or the heat of cooling medium of exchange, one end of pipeline is the inflow end of heat-exchange medium, be provided with control valve 5 No. one at the inflow end, the other end of pipeline is the outflow end of heat-exchange medium, is provided with control valve 6 No. two at outflow end.Be provided with temperature sensor at mold cavity, in pipeline, be provided with pressure sensor.Said temperature sensor, pressure sensor access controller, said pump, a control valve, No. two control valves, electrically heated rods are controlled by controller.
Above-mentioned controller also can be described as centralized control unit.
Preferably, above-mentioned pipeline has some, and the distance between each pipeline and the mold cavity surface is 6mm~15mm, and the diameter of pipeline is 8mm~16mm; The diameter of electrically heated rod is than the little 2mm~8mm of diameter of pipeline.
More preferably, above-mentioned pipeline can be divided into four pipeline group, is laid in respectively on the surrounding of mold cavity; For any one pipeline group, the pipeline in this pipeline group shares a control valve and No. two control valves.
In order to understand better the utility model, be necessary to introduce a kind of heating and cooling method of above-mentioned high-gloss injection mold heating-cooling device, it may further comprise the steps:
Before injection moulding began, the valve at opening conduits two ends i.e. a control valve and No. two control valves, by the motion of pump, the heat hot medium of exchange (take water as example) constantly were injected in the middle of the gap between electrically heated rod and the inner-walls of duct.When ducted pressure sensor feeds back signal to centralized control unit, when the pressure of the water in the gap reached setup pressure value, valve-off and pump formed a confined space this moment in pipeline.Then electrically heated rod begins the water in the heating confined space under the effect of electric power (electrically heated rod itself is to the water insulation).Water in the confined space, in the process that pressure constantly raises, boiling point also increases (principle of similar pressure cooker), and temperature can reach more than 200 degree Celsius.This moment, electric energy in confined space was transformed effectively for heat energy, and promptly be delivered to mold cavity by heat-exchange medium, mold cavity is heated, thereby make the temperature on mold cavity surface reach rapidly capping value (the capping temperature of mold cavity is higher than 100C usually).
When the temperature on mold cavity surface reaches the capping value, control electrically heated rod stopped heating, injection moulding begins.Behind the full mold cavity of filling plastic of melting, enter cooling stage.This moment pipe ends valve and pump open simultaneously, with the heat of cooling medium of exchange (such as water at low temperature) continuously by the gap between electrically heated rod and the inner-walls of duct.In the certain situation of the power of pump, because the existence of electrically heated rod, the area of section that passes through that supplies water in the pipeline reduces greatly, so that the flow velocity of water at low temperature improves.Thereby can within the same time, take away more heat, reduce rapidly the temperature on mold cavity surface.When temperature sensor recorded the mold cavity surface temperature and reaches preset lower limit, valve and the pump of closing simultaneously the pipeline both sides finished cooling procedure.
In order better to utilize the energy, the heat hot medium of exchange and the heat of cooling medium of exchange are separately to store (circulation) in the middle of the corresponding heat-exchange medium storage container usually.The heat-exchange medium reservoir vessel is positioned at the mould outside, on the circulation line between control valve and No. two control valves.In addition, should be equipped with corresponding cooling device at heat of cooling medium of exchange storage container, be used for reducing the temperature of the heat of cooling medium of exchange.
Above-mentioned heat-exchange medium also can be selected other suitable liquid.
The relevant technologies content of not addressing in the aforesaid way is taked or is used for reference prior art and can realize.
Although below with reference to accompanying drawing; detailed explanation has been carried out in design of the present utility model; but those skilled in the art also can recognize; under the prerequisite that does not break away from the claim restriction; still can make various improvement and conversion to the utility model, and this kind improvement and conversion must be worked as and belonged to protection domain of the present utility model.

Claims (3)

1. a high-gloss injection mold heating-cooling device comprises mold cavity, electrically heated rod, pump, heat-exchange medium storage container and controller; It is characterized in that: be provided with pipeline at mold cavity, electrically heated rod is arranged in the pipeline, leave between the inwall of electrically heated rod and pipeline be used to the gap that passes into heating or the heat of cooling medium of exchange, one end of pipeline is the inflow end of heat-exchange medium, be provided with control valve No. one at the inflow end, the other end of pipeline is the outflow end of heat-exchange medium, is provided with control valve No. two at outflow end; Be provided with temperature sensor at mold cavity, in pipeline, be provided with pressure sensor; Said temperature sensor, pressure sensor access controller, said pump, a control valve, No. two control valves, electrically heated rods are controlled by controller.
2. a kind of high-gloss injection mold heating-cooling device according to claim 1, it is characterized in that: described pipeline has some, and the distance between each pipeline and the mold cavity surface is 6mm~15mm, and the diameter of pipeline is 8mm~16mm; The diameter of electrically heated rod is than the little 2mm~8mm of diameter of pipeline.
3. a kind of high-gloss injection mold heating-cooling device according to claim 1, it is characterized in that: described pipeline is divided into four pipeline group, is laid in respectively on the surrounding of mold cavity; For any one pipeline group, the pipeline in this pipeline group shares a control valve and No. two control valves.
CN 201220416796 2012-08-21 2012-08-21 Highlight injection mould heating and cooling device Expired - Fee Related CN202781741U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220416796 CN202781741U (en) 2012-08-21 2012-08-21 Highlight injection mould heating and cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220416796 CN202781741U (en) 2012-08-21 2012-08-21 Highlight injection mould heating and cooling device

Publications (1)

Publication Number Publication Date
CN202781741U true CN202781741U (en) 2013-03-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220416796 Expired - Fee Related CN202781741U (en) 2012-08-21 2012-08-21 Highlight injection mould heating and cooling device

Country Status (1)

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CN (1) CN202781741U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102785338A (en) * 2012-08-21 2012-11-21 青岛海信模具有限公司 Highlight injection mould heating and cooling device and heating and cooling method thereof
CN103302831A (en) * 2013-06-17 2013-09-18 李金国 Die temperature control system and method
CN106426781A (en) * 2016-11-11 2017-02-22 深圳天珑无线科技有限公司 Injection mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102785338A (en) * 2012-08-21 2012-11-21 青岛海信模具有限公司 Highlight injection mould heating and cooling device and heating and cooling method thereof
CN103302831A (en) * 2013-06-17 2013-09-18 李金国 Die temperature control system and method
CN103302831B (en) * 2013-06-17 2015-08-12 李金国 A kind of mold temp. controlling system and control method
CN106426781A (en) * 2016-11-11 2017-02-22 深圳天珑无线科技有限公司 Injection mold

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20160821

CF01 Termination of patent right due to non-payment of annual fee