CN101890787A - High-precision high-speed hot-cold die - Google Patents
High-precision high-speed hot-cold die Download PDFInfo
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- CN101890787A CN101890787A CN2010101622422A CN201010162242A CN101890787A CN 101890787 A CN101890787 A CN 101890787A CN 2010101622422 A CN2010101622422 A CN 2010101622422A CN 201010162242 A CN201010162242 A CN 201010162242A CN 101890787 A CN101890787 A CN 101890787A
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- control valve
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Abstract
The invention provides a high-precision high-speed hot-cold die. The die comprises a moving die, a fixed die and an electric control device, wherein corresponding to the die cavity part, a cooling pipe is embedded transversely in the forming surface of the fixed die, and a heat pipe and a temperature sensor are longitudinally distributed in the forming surface of the fixed die; the inlet of the cooling pipe is provided with an electric control valve; and the electric control valve is in electric connection with the temperature sensor and the electric control device. The die can radically solve the problem of weld lines on the surface and the like to improve the surface smoothness of the product, can greatly shorten the forming period to improve efficiency, avoids cost for secondary processing of spraying a high-glossy paint, and has the yield of over 98 percent; and the processed product does not require subsequent processing after painting, and the finished product ratio is improved by 20 to 30 percent.
Description
Technical field
The present invention relates to the injection molding technology field, be specially a kind of high-precision high-speed hot-cold die.
Background technology
Injection molding technology obtains using very widely in the finished product manufacturing of all trades and professions, and its basic principle is to utilize the tube that shoots material of annotating the shape machine that thermoplastic is heated to molten condition, again vasopressing injection in the injection mold cavity through being condensed into goods.Temperature in the die cavity of control mould is one of main means of control quality of item.Along with plastic products use increasingly extensive, enterprise is more and more higher to the requirement of precision, surface quality and the intensity of plastic products, people have proposed requirements at the higher level to the cost in shape, performance and the generative process of plastic products, environmental protection and saving energy and reduce the cost etc. simultaneously, and traditional injection molding technique has been difficult to adapt to this requirement.Main at present surface quality and the surface strength that improves plastic products by the plastic spraying technology.On the one hand, the surface quality of injecting products is very big to the product quality influence after spraying, if the surface quality of injecting products is relatively poor, is difficult to obtain qualified part by spraying technology.On the other hand, spraying is the secondary operations to plastic product, and not only waste generates raw material, wastes energy, and increases the production cost of plastic products, and causes serious environmental to pollute, harm operating personnel's health of human body.
The molten trace Shooting Technique of Gao Guangwu can obtain the product of high accuracy, best bright finish, no current mark, this technology is in injection molding process, with the die cavity of injection molding or core rod quickly heat up near or be higher than the heat distortion temperature of polymer, then polymer is expelled in the mold cavity, the temperature that in injection and pressure maintaining period, always keeps mould or core rod, quick then cooling die die cavity or core rod are opened mould after mold temperature is cooled to a certain degree, take out product.But the temperature control precision height of this technological requirement mould, the temperature control of mould of plastics Fast Heating and cooling is the injection molding product key link that obtains high accuracy, best bright finish, no current mark.
Summary of the invention
The objective of the invention is to: a kind of high-precision high-speed hot-cold mould is provided, and it can thoroughly solve surperficial weld bond, and defectives such as weld mark have shortened molding cycle significantly, raise the efficiency, and has removed the cost that secondary operations is sprayed high lac varnish from, and yields reaches more than 98%.
The present invention for achieving the above object, the technical scheme that adopts is: a kind of high-precision high-speed hot-cold mould, comprise dynamic model, cover half and electric control gear, crisscross arranged crosswise has two groups of pipelines in the corresponding cavity section, the forming surface of described cover half, wherein, one group is cooling tube, and another group is provided with temperature sensor for heating tube in the described heating tube, described cooling tube import is provided with motor-operated control valve, and described motor-operated control valve is realized being electrically connected with temperature sensor and electric control gear.
Also comprise the compressed air feedway, described compressed air feedway is come round by motor-operated control valve and cooling tube.
The present invention can adopt steam assistant formation technology, on mould in all permanent heating tube, behind the injection machine matched moulds, be blown into high-temperature vapour, at first mold temperature is brought up to a setting value, begin then, after injection machine is finished pressurize and changed cooling over to the cavity injection plastic cement, begin to inject cold water, mold temperature drops to die sinking after the setting value very soon, is blown into air to mould again cold water is blown away fully, finishes whole injection moulding process.The present invention can improve yields greatly by above-mentioned steam assistant formation technology, and concrete advantage is as follows:
1. thoroughly solve surperficial weld bond, weld mark, ripple, filamentary silver line, defectives such as shrink.
2. shorten molding cycle significantly, improved efficient.
3. removed the cost that secondary operations is sprayed paint from, yields reaches more than 98%.
Further improvement of the present invention is: described cooling tube import is provided with flow controller, and described flow controller is realized being electrically connected with electric control gear, realizes cold and hot accuracy control over temperature.
Further improvement of the present invention is: be provided with heating rod in the described heating tube.The electrically heated rod that utilization is embedded in mould inside directly heats injection mold, improved efficient, the injection machine injection moulding finish change cooling over to after, cold water is injected in beginning in cooling tube, mold temperature drops to die sinking after the setting value very soon, be blown into air to mould again cold water is blown away fully, finish whole injection moulding process.
The present invention has also avoided having heat absorption and then delaying the mould programming rate because of cooling water in the mold heated process; Prevented the harm that cooling water causes pipeline and operating personnel because of heating and gasifying.
Description of drawings
Fig. 1 is an assembling sketch of the present invention.
Fig. 2 is that the A of cover half among Fig. 1 is to schematic diagram.
Fig. 3 is the structural representation of cooling tube.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1 to Figure 3, a kind of high-precision high-speed hot-cold mould comprises dynamic model 1, cover half 2 and electric control gear, accompanies upper and lower workpiece 3 and cap pouring port within dynamic model 1 and cover half 2; In cover half 2, be docile and obedient preface from top to bottom and laterally be embedded with cooler 4, vertically be embedded with heating tube 5, all coolers 4 all are tightly connected with the flow controller of pipeline and cooling fluid, and the flow controller of cooling fluid and motor-operated control valve 6 are carried out with electric control gear and be electrically connected; Be inserted in the heating tube of cover half 2 and electrically heated rod is perpendicular, temperature sensor is installed in the die body and with the electric control gear implementation and is electrically connected; The action of electric control gear is by the accurate control of instrument.
The course of work of the present invention is: by instrument design temperature number, after treatment to electric control gear output control signal, flow by the cooling fluid of the size of current of control signal control heater and cooler, the electrically heated rod that utilization is embedded in mould inside directly heats injection mold, at first mold temperature is brought up to a setting value, begin then to the cavity injection plastic cement, after injection machine is finished pressurize and is changed cooling over to, begin to inject cold water, mold temperature drops to die sinking after the setting value very soon, be blown into air to mould again cold water is blown away fully, finish whole injection moulding process.The present invention utilizes electric heating in 20 seconds the plastic cement temperature to be heated to forming temperature 280 degree, can it is cooled to about 20 degree afterwards.
The present invention can thoroughly solve surperficial weld bond, and defectives such as weld mark improve product surface fineness; Can shorten molding cycle significantly, raise the efficiency, remove the cost that secondary operations is sprayed high lac varnish from, yields reaches more than 98%; Product after its processing does not need the following process of spraying paint, and improves yield rate 20-30%.
Claims (4)
1. high-precision high-speed hot-cold mould, comprise dynamic model, cover half and electric control gear, it is characterized in that: corresponding cavity section, crisscross arranged crosswise has two groups of pipelines in the forming surface of described cover half, and wherein, one group is cooling tube, another group is heating tube, be provided with temperature sensor in the described heating tube, described cooling tube import is provided with motor-operated control valve, and described motor-operated control valve is realized being electrically connected with temperature sensor and electric control gear.
2. high-precision high-speed hot-cold mould according to claim 1 is characterized in that: also comprise the compressed air feedway, described compressed air feedway communicates with cooling tube by motor-operated control valve.
3. high-precision high-speed hot-cold mould according to claim 1 is characterized in that: described cooling tube import is provided with flow controller, and described flow controller is realized being electrically connected with electric control gear.
4. high-precision high-speed hot-cold mould according to claim 1 is characterized in that: be provided with heating rod in the described heating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101622422A CN101890787A (en) | 2010-05-05 | 2010-05-05 | High-precision high-speed hot-cold die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101622422A CN101890787A (en) | 2010-05-05 | 2010-05-05 | High-precision high-speed hot-cold die |
Publications (1)
| Publication Number | Publication Date |
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| CN101890787A true CN101890787A (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101622422A Pending CN101890787A (en) | 2010-05-05 | 2010-05-05 | High-precision high-speed hot-cold die |
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| CN (1) | CN101890787A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385498A (en) * | 2014-11-18 | 2015-03-04 | 南通久盛新材料科技有限公司 | Full-automatic glass fiber reinforced plastic demolding system |
| CN106182660A (en) * | 2016-09-08 | 2016-12-07 | 苏州路熙光电科技有限公司 | A kind of die temperance control device |
| CN109693355A (en) * | 2018-12-26 | 2019-04-30 | 海天塑机集团有限公司 | A kind of die temperance control method and system of injection molding machine |
| CN115214097A (en) * | 2022-07-18 | 2022-10-21 | 俄木罗钱 | Injection mold cooling system |
-
2010
- 2010-05-05 CN CN2010101622422A patent/CN101890787A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385498A (en) * | 2014-11-18 | 2015-03-04 | 南通久盛新材料科技有限公司 | Full-automatic glass fiber reinforced plastic demolding system |
| CN106182660A (en) * | 2016-09-08 | 2016-12-07 | 苏州路熙光电科技有限公司 | A kind of die temperance control device |
| CN109693355A (en) * | 2018-12-26 | 2019-04-30 | 海天塑机集团有限公司 | A kind of die temperance control method and system of injection molding machine |
| CN115214097A (en) * | 2022-07-18 | 2022-10-21 | 俄木罗钱 | Injection mold cooling system |
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Legal Events
| Date | Code | Title | Description |
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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: 20101124 |