CN101791843A - Steam heating system for controlling quick temperature change of injection mold - Google Patents
Steam heating system for controlling quick temperature change of injection mold Download PDFInfo
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- CN101791843A CN101791843A CN 201010300196 CN201010300196A CN101791843A CN 101791843 A CN101791843 A CN 101791843A CN 201010300196 CN201010300196 CN 201010300196 CN 201010300196 A CN201010300196 A CN 201010300196A CN 101791843 A CN101791843 A CN 101791843A
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Abstract
The invention relates to a steam generating device, in particular to a steam heating system for controlling quick temperature change of an injection mold, which is particularly used for obtaining a resin polymer injection molding product with high quality appearance by realizing integration of modules such as a steam boiler, a steam reservoir, a steam controller and the like. The steam heating system comprises a water supply tank 9, one or more parallel electric heating steam generators 6 and a steam reservoir 2 which are connected in series by conduits; and each steam generator 6 is connected with the steam reservoir 2 by two conduits, wherein one of the conduits comprising a one-way valve 5 is directly connected with the steam reservoir 2. The steam heating system has the advantages that the water temperature in the water supply tank is improved and the energy consumption can be greatly reduced because the electric heating steam generators in the system can make full use of the heat of condensed water in the steam reservoir and the heat of the return water of the system to heat a heat exchanger in the water supply tank. For example, when a front frame of a 47' liquid crystal television is produced, the production energy consumption can be reduced by 50 percent by the steam heating system and the molding period is properly shortened compared with a steam generator of a large-sized boiler.
Description
Technical field
The present invention relates to steam raising plant, particularly a kind of steam-heating system of controlling quick temperature change of injection mold, be exactly to pass through to realize the integrated of modules such as steam boiler, steam accumulator and steam controller concretely, thereby at the resinous polymer injection-molded product that obtains high-quality apperance.
Background technology
When the plastic products of injection mo(u)lding high-quality apperance,, be a kind of process commonly used by to the fast-changing control of mold temperature.Because steam special thermodynamic feature, easy enforcement and technology controlling and process are stable, adopting steam is the most general as heat medium.The open Chinese patent ZL200720075904.6 that authorizes disclosed a kind of for obtaining the device of the control injection mold variations in temperature that the high-quality apperance injection molding part develops as on December 24th, 2008, this device for the applicant for combustion gas is installed, the client of oil-fired steam boiler develops, this matching requirements user has large-scale steam boiler, storage vapour device and jet chimney etc., the problem of Cun Zaiing is in practice: the one,, big-and-middle-sized oil-burning gas-fired boiler all requires special boiler room, far away from the production scene, generally all need very long jet chimney steam could be inserted the steam controller, the energy consumption brought of pipeline heat radiation is just inevitable like this; The 2nd, because the heat radiation of storage vapour device is inevitable and form condensed water in storage vapour device, and condensed water can only regularly be got rid of by blowoff valve, takes away a large amount of heats, and can not recycle; The 3rd,, when adopting described steam to carry out technology controlling and process,, directly drained or mixed with cooling water to not being recovered by the steam behind the mould, cause great energy waste; The 4th,, the steam of a large-scale steam boiler production can offer respectively by a plurality of steam controllers and overpay the injection mold use.If but when having only one pair of injection mold to produce, also must open large-scale steam boiler, this would not only improve operating cost, and the control device adds energy consumption inevitably; The 5th,, the formality complexity that large-scale steam boiler is installed, in the use restriction many, cause user's inconvenience.
Summary of the invention
The present invention seeks to solve the deficiency of technique scheme, a kind of steam heater of controlling quick temperature change of injection mold is provided, this device is a kind of integrated system, in use significantly reduces energy resource consumption simultaneously.
The object of the invention realizes, is finished by following technical scheme:
The present invention includes is connected in series by the electric heating steam generator 6 of water supply tank 9 and one or more parallel connections and steam accumulator 2 usefulness pipelines forms, each steam generator 6 all has two pipelines to be connected with steam accumulator 2, and one of them pipeline that comprises check valve 5 directly is connected on the steam accumulator 2; Steam accumulator 2 is arranged on the upper end of electric heating steam generator 6, makes that the condensed water in the memory 2 can rely on gravity current to electric heating steam generator 6, is provided with heat exchanger 12 in the water supply tank 9.
Advantage of the present invention is, because the interior heat exchanger of heat heating water supply tank that the electric heating steam generator in apparatus of the present invention can make full use of the heat of condensed water in the steam memory and utilize system's backwater, thereby the water temperature in the raising water supply tank can significantly reduce energy resource consumption." frame before the LCD TV compares with the large-sized boiler steam generator, uses product of the present invention, and energy consumption reduces by 50%, and molding cycle also has suitable shortening such as producing 47.
Description of drawings
Accompanying drawing 1 structural representation of the present invention and embodiment schematic diagram.
Specific embodiments
In conjunction with the accompanying drawings technical characterictic of the present invention and correlated characteristic thereof are described in further detail down:
Show that as accompanying drawing 1 label in the accompanying drawing is represented respectively: the chassis frame of 1-integrated system, the 2-steam accumulator, the 3-safety valve, the 4-steam pressure gauge, the 5-check valve, the 6-electric heating steam generator, the 7-distribution box, the 8-feed cable, the 9-water supply tank, the 10-water inlet, the 11-switch, the 12-heat exchanger, 13-cooling water source interface, 14-compressed air source interface, 15-heat exchanger interface, 16-heat exchanger interface, the 17-water pump, the 18-pneumatic stopping valve, the 19-pneumatic stopping valve, the 20-pneumatic stopping valve, the 21-pneumatic stopping valve, the 22-pneumatic stopping valve, the 23-control module, 24-injection moulding machine control system, 25-system media output interface, the 26-system media returns interface, 27-system media discharging interface, the 28-injection mold, the 29-temperature sensor, 100-steam accumulator steam outlet, 101-pipeline tie point, 102-pipeline tie point, 103-pipeline tie point, 104-pipeline tie point.
The embodiment of the invention comprises being connected in series by the electric heating steam generator 6 of water supply tank 9 and two parallel connections and steam accumulator 2 usefulness pipelines and forms, each steam generator 6 all has two pipelines to be connected with steam accumulator 2, one of them pipeline that comprises check valve 5 directly is connected on the steam accumulator 2, steam accumulator 2 is arranged on the upper end of electric heating steam generator 6, make the condensed water in the memory 2 can rely on gravity current to electric heating steam generator 6, be provided with heat exchanger 12 in the water supply tank 9.The use of present embodiment is 47 with article of manufacture, and " the LCD TV front plane frame is an example, and injection mold 28 is a cavity mould, is provided with four temperature sensors 29 near appearance surfaces; And the medium channel in the mould allows steam, cooling water and compressed air to pass through smoothly, with the mold cavity surface of Fast Heating and cooling die.Adopt 2 or 5 electric heating steam generators 6 that installation power is 24kW, be installed in parallel on a chassis frame; Every electric heating steam generator is all according to the pressure spot of setting operation automatically.At the back side of steam generator 6, hang a water supply tank 9, comprise water inlet 10, switch 11, built-in heat exchanger 12, water supply tank is connected respectively with every steam generator 6, and the water of higher temperature is provided.Steam accumulator 2 is placed at top at steam generator, contains safety valve 3, steam pressure gauge 4 and delivery outlet 100; All there are two pipelines to be connected between steam accumulator 2 and each steam generator 6, one of them pipeline is used for the steam that steam generator 6 is produced is delivered to steam accumulator 2, and another one contains the bottom that the pipeline of check valve 5 is directly connected to steam accumulator 2, be used for the high-temperature condensation water of steam accumulator 2 is drawn back steam generator, reduce the consumption and the energy consumption of water.And pass through pneumatic stopping valves 19 from steam outlet 100 is 0.5 meter to the pipeline connection length of pipeline tie point 101 again; Be directly connected to system media output interface mouth 25 then, but between tie point 101 and delivery outlet 25, a tie point 102 be set, be used for introducing cleaning compressed air; And output interface 25 is connected with pipeline with the medium channel import of injection mold 28, and system media returns interface 26 and is connected with the medium channel outlet of injection mold 28.The steam that returns from mould is along pipeline, by pneumatic stopping valve 21 and heat exchanger 12, be discharged to the circulation cooling tower system of factory through system media discharging interface then.Steam a large amount of heat transferred will be able to be produced in the cold water of steam and carry out preheating, and the heat that remains in from the steam that mould returns has been utilized once more when the heat exchanger 12.The water inlet 10 of water supply tank is connected with cooling water source interface 13 by pipeline, and for improving the efficient of mould, cooling water source is preferably through the softening cooling water of handling.Cooling water source interface 13 is connected to pipeline tie point 101 through pipeline, water pump 17, pneumatic stopping valve 18 simultaneously, with the path UNICOM of above-mentioned steam, but can realize that at different states different time is sent to heating or cooling die in the medium channel of mould with 19 by control pneumatic stopping valve 18; Cooling water is through behind the medium channel of mould, and temperature is lower, and the effect that enters heat exchanger 12 is little, may be to the water temperature counter productive in the water supply tank, and therefore returning interface 26 at system media is provided with pneumatic stopping valve 21 between the interface 16 of heat exchanger 12; At pneumatic stopping valve 21 with return a pipeline tie point 103 is set between the interface 26, between system media discharging interface 27, pipeline tie point 104 is set at another interface 15 of heat exchanger 12; Pipeline tie point 103 and 104 usefulness pipelines are coupled together, and a pneumatic stopping valve 22 is set therein; By the unlatching and the shut-in time of control pneumatic stopping valve 21 and 22, realize residual can being fully utilized of returning of steam like this.In the operational version of technology of the present invention, the compressed air one side is as the pilot gas of pneumatic stopping valve; Be as technology gas on the other hand, be used for before logical Steam Heating in the medium channel of mould 28, the cooling water in the mould being blown out, avoid steam in water, to produce the quick-fried and big defective of energy consumption of vapour.Therefore pass through compressed air source interface 14, pneumatic stopping valve 20 in the operational version of the present invention, compressed air is connected to pipeline tie point 102, be used for the technology cleaning.In addition, between compressed air source interface 14 and pneumatic stopping valve 20, compression control is connected on the pilot gas interface of each pneumatic stopping valve, as the switch drive source of the gas of each pneumatic stopping valve by pipeline.And will be discharged according to the path of cooling water from air or the air-water mixture that mould returns.In occupation mode of the present invention, control module 23 adopts PLC and liquid crystal touch screen operation interface.The PLC system sends the switch of 5 pneumatic stopping valves of instruction control by with the communication of the control system 24 of injection moulding machine with accept the observed temperature value of the temperature sensor 29 in the mould, and the start and stop of pump motor, realizes following processing step:
Arrive design temperature when temperature sensor 29 detects temperature, control module 23 sends the control system 24 that signal is given injection moulding machine, allows injection; Injection machine begins injection according to this signal;
After delay time a period of time or injection finish, control module sends instruction, valve 19 is closed, 18 open, and 20 close, and 22 open, 21 close, the motor starting of water pump 17 is carried cooling water in the medium channel of mould, mold temperature is reduced to preset temperature, and discharges from discharging interface 27 then through pneumatic stopping valve 22 by the cooling water in the mould;
Drop to setting value when temperature sensor 29 records mold temperature, control module 23 sends to the control system 24 of injection moulding machine and allows the die sinking signal; Send instruction simultaneously, make valve 18 close, 19 close, 20 open, 21 close, 22 open, the motor of water pump 17 closes, and compressed air blows out the cooling water in the medium channel of mould 28 like this; For next one circulation is prepared;
In said process, steam generator 6 will be worked automatically according to setting pressure, and the steam that produces is stored in the holder 2.Pressure in holder 2 arrives setting value, and steam generator is in holding state.Provide steam generator 6 and control module 23 required power supply by distribution box 7, and distribution box is connected with the power-supply system of factory by cable 8.
In embodiments of the present invention, comprise distribution box, steam generator, steam accumulator, system media output interface, system media returns interface, control module etc. and is integrated on the chassis frame, has made things convenient for to install and use, and bigger advantage is energy-conservation.With respect to the embodiment of ZL200720075904.6, embodiments of the present invention can make described 47, and " energy consumption of frame reduces by 50% before the LCD TV, and molding cycle also has suitable shortening.
Though below design and example according to the object of the invention have been done to elaborate with reference to accompanying drawing; but those of ordinary skills can recognize; under the precondition that does not break away from the claim limited range; still can make various improvement and conversion to the present invention, and this improvement and conversion still should belong to protection scope of the present invention.
Claims (3)
1. control the steam-heating system of quick temperature change of injection mold, it is characterized in that, comprising is connected in series with pipeline by the electric heating steam generator (6) of water supply tank (9) and one or more parallel connections and steam accumulator (2) forms, each steam generator (6) all has two pipelines to be connected with steam accumulator (2), and one of them pipeline that comprises check valve (5) directly is connected on the steam accumulator (2).
2. the steam-heating system of control quick temperature change of injection mold according to claim 1, it is characterized in that, steam accumulator (2) is arranged on the upper end of electric heating steam generator (6), makes that the condensed water in the memory (2) can rely on gravity current to electric heating steam generator (6).
3. the steam-heating system of control quick temperature change of injection mold according to claim 1 is characterized in that, is provided with heat exchanger (12) in the water supply tank (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010300196 CN101791843B (en) | 2010-01-11 | 2010-01-11 | Steam heating system for controlling quick temperature change of injection mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010300196 CN101791843B (en) | 2010-01-11 | 2010-01-11 | Steam heating system for controlling quick temperature change of injection mold |
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| CN101791843A true CN101791843A (en) | 2010-08-04 |
| CN101791843B CN101791843B (en) | 2013-06-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878548A (en) * | 2012-10-17 | 2013-01-16 | 亿恒节能科技江苏有限公司 | Low humidity steam flash double effect heat exchange system |
| CN102878547A (en) * | 2012-10-17 | 2013-01-16 | 亿恒节能科技江苏有限公司 | Outer drying steam triple-effect heat exchange system |
| CN104214756A (en) * | 2013-06-01 | 2014-12-17 | 黄金虎 | High-frequency induction steam generation device and die temperature regulating system with same |
| CN109664453A (en) * | 2018-11-02 | 2019-04-23 | 保定棉金汽车饰件制造有限公司 | A kind of energy conservation epp production line |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201028491Y (en) * | 2007-04-26 | 2008-02-27 | 三威塑胶制品(珠海)有限公司 | Steam generator and uses thereof |
| JP5250223B2 (en) * | 2007-08-20 | 2013-07-31 | 三菱重工プラスチックテクノロジー株式会社 | Temperature control method and temperature control device for molding die |
| CN201275863Y (en) * | 2008-10-15 | 2009-07-22 | 三威塑胶制品(珠海)有限公司 | Auxiliary moulded mould temperature control appliance |
| CN201566110U (en) * | 2010-01-12 | 2010-09-01 | 北京中拓机械有限责任公司 | Steam heating device for controlling quick temperature change of injection mold |
-
2010
- 2010-01-11 CN CN 201010300196 patent/CN101791843B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878548A (en) * | 2012-10-17 | 2013-01-16 | 亿恒节能科技江苏有限公司 | Low humidity steam flash double effect heat exchange system |
| CN102878547A (en) * | 2012-10-17 | 2013-01-16 | 亿恒节能科技江苏有限公司 | Outer drying steam triple-effect heat exchange system |
| CN104214756A (en) * | 2013-06-01 | 2014-12-17 | 黄金虎 | High-frequency induction steam generation device and die temperature regulating system with same |
| CN109664453A (en) * | 2018-11-02 | 2019-04-23 | 保定棉金汽车饰件制造有限公司 | A kind of energy conservation epp production line |
| CN109664453B (en) * | 2018-11-02 | 2020-11-10 | 保定棉金汽车饰件制造有限公司 | Energy-saving epp production line |
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| CN101791843B (en) | 2013-06-19 |
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Owner name: BEIJING CHN-TOP MACHINERY GROUP CO., LTD. Free format text: FORMER NAME: BEIJING CHN-TOP MACHINERY CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 102208 Beijing, Huilongguan, Beijing, Changping District Billiton machinery Refco Group Ltd Patentee after: Co., Ltd of mechanical group is opened up in Beijing Address before: 102208 Beijing, Huilongguan, Beijing, China Billiton Machinery Co., Ltd. Patentee before: Beijing Chn-Top Machinery Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20181016 Address after: 102208 Beijing Changping District science and technology zone 11 Huatong Road Patentee after: Beijing Zhong Tuo Moulding Technology Co., Ltd. Address before: 102208 Beijing Changping District Huilongguan Beijing Zhong Tuo machinery Refco Group Ltd Patentee before: Co., Ltd of mechanical group is opened up in Beijing |
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