CN201169046Y - Apparatus for rapidly controlling injection mold temperature change - Google Patents
Apparatus for rapidly controlling injection mold temperature change Download PDFInfo
- Publication number
- CN201169046Y CN201169046Y CNU2007200759046U CN200720075904U CN201169046Y CN 201169046 Y CN201169046 Y CN 201169046Y CN U2007200759046 U CNU2007200759046 U CN U2007200759046U CN 200720075904 U CN200720075904 U CN 200720075904U CN 201169046 Y CN201169046 Y CN 201169046Y
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- Prior art keywords
- switch valve
- valve
- temperature
- pipeline
- foaming agent
- 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 - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims description 27
- 239000007924 injection Substances 0.000 title claims description 27
- 238000001746 injection moulding Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 14
- 229920000642 polymer Polymers 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 2
- 239000004088 foaming agent Substances 0.000 abstract 9
- 238000005187 foaming Methods 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 15
- 238000000465 moulding Methods 0.000 description 9
- 239000002826 coolant Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- WNEODWDFDXWOLU-QHCPKHFHSA-N 3-[3-(hydroxymethyl)-4-[1-methyl-5-[[5-[(2s)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl]amino]-6-oxopyridin-3-yl]pyridin-2-yl]-7,7-dimethyl-1,2,6,8-tetrahydrocyclopenta[3,4]pyrrolo[3,5-b]pyrazin-4-one Chemical compound C([C@@H](N(CC1)C=2C=NC(NC=3C(N(C)C=C(C=3)C=3C(=C(N4C(C5=CC=6CC(C)(C)CC=6N5CC4)=O)N=CC=3)CO)=O)=CC=2)C)N1C1COC1 WNEODWDFDXWOLU-QHCPKHFHSA-N 0.000 description 1
- 229920007019 PC/ABS Polymers 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a device which can quickly control the temperature change of the injection molding die, which relates to a gas foaming agent flow control device, in particular to a foaming agent flow control system when a gas physical foaming agent is adopted to process the thermoplastic foamed plastic. The gas foaming agent flow control system of the utility model is composed of an inlet stop valve 1, a high pressure container 2, a pressure reducing valve 3, an electromagnetic proportioning valve 4, a high pressure servo valve 7, an adjustable throttle valve 8, pressure sensors 9 and 10, a foaming agent temperature controlling module 11, a temperature sensor 12, a data processing and controlling module 5, an operation interface 6, and a pressure pipeline and a communication wire or a cable which are connected with all the components. The gas foaming agent flow control system has the advantages that the system can be used to control the gas flow quantity and the temperature of the foaming agent by adopting a closed loop according to the flow quantity and the temperature values of the foaming agent injected into the processing device, and the foaming agent flow required by the foaming process can be accurately and evenly inducted into the polymer.
Description
Technical field
The utility model relates to the mould in the plastic products processing, thereby is a kind of by realizing that the variation of injection forming mold mold cavity surface temperature cycle obtains the attemperating unit of the resinous polymer injection-molded product of high-quality apperance concretely.
Prior art
When the injection moulding of routine, the temperature of mould is lower usually, generally between 30 ℃-80 ℃.But concerning a lot of apparent, defectives such as the weld mark that adopts conventional low temperature mould to be difficult to solve to occur in the injection process, current mark, glass emergence on the surface.Solving this problem by the temperature that improves mold temperature and polymer in injection moulding the time is well-known method, sometimes mold temperature can be above 150 ℃, but owing to can not goods be cooled down in the short time, thereby cause molding cycle to increase significantly, thereby cause the production cost height.At disclosed Chinese patent literature CN1211194C, CN1572460A; disclose a kind of for obtaining the method for high-quality apperance injection molding part; promptly before injection; feed heat medium in the pipeline in mould earlier; superheated steam specifically; mould or mold cavity surface are heated rapidly to the softening temperature of thermoplastic resin or are higher than softening temperature; and then feed cooling medium in the same pipeline; cooling water specifically; mould and goods are cooled fast to below the softening temperature of thermoplastic resin, and the demoulding obtains goods then.But only mention that in above-mentioned two patents heat medium and cooling medium circulate in same pipeline, and how not disclose periodically variable device of specific implementation mold temperature and control method.No matter adopt any of these two kinds of methods, all owing to high-temperature medium (as steam) and the mixing of lower temperature cooling medium inside and outside mould, in fact molding cycle is longer thereby cause.
Disclosed Chinese patent literature CN1654185A has then disclosed the device of a kind of and top two akin technical methods of patent documentation quoting from and required realization control, also be that heat medium and cooling medium are successively fed in the same pipeline in the mould by control, and through in the buffer container that switches the heat medium be discharged to respectively beyond the mould or cooling medium, to cut down the consumption of energy.But because two media circulates in same pipeline, the inevitable existence mixes; And when adopting this method, adopted controlling unit too complicated, invest also big.
Summary of the invention
The purpose of this utility model is exactly to adopt the succinct easily apparatus and method of row, realizing the cyclically-varying of mold temperature, when obtaining the good surface appearance quality, making molding cycle the shortest, and cut down the consumption of energy to greatest extent.
The utility model technical purpose realizes, is finished by following technical scheme:
The utility model comprises:
A) steam/chilled(cooling) water return (CWR), comprise the pump 405 that drives with the fluid passage in steam generator 201, hand switch valve 202, hand switch valve 203, controlled switch valve 204, hand switch valve 502, the mould 501, hand switch valve 503, controlled switch valve 407, hand switch valve 403, thermostat 401, hand switch valve 402, by motor 404 by pipeline, the path that electromagnetic switching valve 406 links into an integrated entity, with a port of export and the condenser 408 that is connected of the two ends of controlled switch valve 407 by pipeline and electromagnetic switching valve 406;
B) and compressed air cleaning path and pilot gas path, comprising supplying 301 by compressed air, hand switch valve 302, controlled switch valve 303 is linked in sequence by pipeline, and the outlet of controlled switch valve 303 by pipeline with a) described in the compressed air cleaning path formed after being connected of controlled switch valve 204 in steam/chilled(cooling) water return (CWR) and the pipeline between controlled switch valve 406 and the hand switch valve 502, and on the pipeline between hand switch valve 302 and the controlled switch valve 303, compressed air is connected respectively to magnetic valve 304 with pipeline, magnetic valve 305 and magnetic valve 306 and and then be connected respectively to controlled switch valve 303,407, the 204 pilot gas paths of forming;
C) and central control unit 701, form by programmable processor and operation interface, be connected with magnetic valve 304,305,306 and electromagnetic switching valve 406 usefulness communication cables, and be connected the exchange cycles signal with the control system 702 of injection moulding machine, also be installed at least one temperature sensor 104 that at least one temperature sensor 103 used near the measurement high temperature of the mold cavity surface of mould 501 and measurement low temperature uses and be connected and receive temperature signal.
Description of drawings
Accompanying drawing 1 is the utility model system schematic;
Accompanying drawing 2 uses the schematic diagram of the utility model production sheet products;
Accompanying drawing 3 is an accompanying drawing 2A-A cutaway view.
Specific embodiments
Below in conjunction with accompanying drawing the utility model technical characterictic and correlated characteristic thereof are described in further detail:
Show that as accompanying drawing 1,2 label in the accompanying drawing is represented respectively, 103-temperature sensor, 104-temperature sensor; 201-steam generator, 202-hand switch valve, 203-hand switch valve, 204-controlled switch valve; The supply of 301-compressed air, 302-hand switch valve, 303-controlled switch valve, 304-magnetic valve, 305-magnetic valve, 306-magnetic valve; 401-thermostat, 402-hand switch valve, 403-hand switch valve, 404-motor, 405-pump, 406-electromagnetic switching valve, 407-controlled switch valve, 408-condenser; 501-mould, 502-hand switch valve, 503-hand switch valve; 701-central control unit, 702-control system for shot machine, 801-sheet products.
Referring to accompanying drawing 1, one pair of mould 501 is set, the fluid passage that wherein has die cavity and cooling medium to pass through, and at close certain surface mounting temperature sensor 103 and 104 of die cavity.On the import and export pipeline of the fluid passage of mould 501 hand switch valve 502 and 503 have been installed respectively.Hand switch valve 502 is connected with the exit hand switch valve 202 of steam generator 201 by connecting line, controlled switch valve 204.Steam generator 201 is connected by the water supply line of a hand switch valve 203 with the scene.Be connected with the hand switch valve 403 at the water return outlet place of thermostat 401 by pipeline, controlled switch valve 407 at hand switch valve 503.And the hand switch valve 402 at the delivery port place of thermostat 401 is connected to electromagnetic switching valve 406 by connecting line, the pump 405 that driven by motor 404.One of them outlet of electromagnetic switching valve 406 is connected between controlled switch valve 204 and the hand switch valve 502 on the pipeline by connecting line, and is communicated with.And the outlet of the another one of electromagnetic switching valve 406 is connected with condenser 408 by connecting line.Two other connector of condenser 408 is connected with hand switch valve 503 by pipeline respectively, and connects and be communicated on the pipeline between controlled solenoid valve 407 and the hand switch valve by connecting line.
One of concrete feature of the present utility model is to adopt compressed air that steam in fluid passage or cooling water blown out between the fluid passage at steam and cooling water in alternately by mould 501, thereby improves heat exchange efficiency and shorten molding cycle.Specific implementation method be with the outlet hand switch valve 302 of the compressed air supply 301 at scene by connecting line, controlled solenoid valve 303, directly connect then and be communicated on the pipeline between electromagnetic switching valve 406 and the controlled switch valve 204.And between controlled switch valve 303 and hand switch valve 302, be connected respectively to magnetic valve 304 by connecting line, on magnetic valve 305 and the magnetic valve 306.And the outlet of magnetic valve 304 is connected with controlled switch valve 303, and magnetic valve 305 is connected with controlled switch valve 407, and magnetic valve 306 is connected with controlled switch valve 204.Whole system just can operate under the control of central control unit 701 like this.
After whole device connects by above-described mode, can turn round and control, obtain needed effect by method of describing below and step.
At first hand switch valve 203,302,402,403,502,503 all is transferred to open position.After treating that steam that steam generator 201 is produced reaches the temperature (for example 170 ℃) and pressure (for example 9bar) of setting, open hand switch valve 202.Suppose that at the beginning of the cycle mould 501 is not closed, the control system 702 of injection machine is sent the matched moulds signal to the central control unit 701 of injection machine closing unit and the utility model device.The central control unit 701 of the utility model device sends signal to magnetic valve 306 after receiving signal, switch valve 204 is shown in an open position; Simultaneously send signal, switch valve 407 is shown in an open position to magnetic valve 305.At this moment steam flows into and passes through the fluid passage of mould 501 fast by pipeline, make the surface of the die cavity of mould 501 be warmed up to a design temperature, for example 130 ℃, the temperature sensor 103 that is installed near mold cavity surface feeds back to central control unit 701 with the temperature signal that detects.When temperature sensor 103 detected temperature reached the temperature value of setting, central control unit 701 sent the signal that injection can begin to the control system 702 of injection machine, and at this moment injection machine is carried out the injection action.Simultaneously or delay the time that an injection is finished to be needed, central control unit 701 sends signal to magnetic valve 306, makes switch valve 204 be in the position of closing; Issue a signal to magnetic valve 304 simultaneously, make switch valve 303 be in open mode.At this moment, compressed air can blow out the steam in the fluid passage in the mould 501 apace.Central control unit 701 sends signal to magnetic valve 304 and makes switch valve 303 be in closed condition then, while or of short duration time-delay are sent signal to electromagnetic switching valve 406 makes cooling water changing flow direction hand switch valve 502 directions, cooling water is sent in the fluid passage of mould 501 by motor 404 driving pumps 405, the mold cavity surface of mould 501 is reduced to a design temperature, for example 80 ℃.The temperature sensor 104 that meanwhile is installed near mould 501 mold cavity surfaces feeds back to central control unit 701 with temperature signal.When temperature sensor 104 detected temperature dropped to design temperature, central control unit 701 sends to the control system 702 of injection machine can the die sinking signal; And simultaneously send signal to magnetic valve 304 switch valve 303 is shown in an open position, send signal to electromagnetic switching valve 406 and make it cooling water flow to condenser 408 directions.This moment, compressed air blew out the cooling water in mould 501 fluid passages, waited for that next circulation feeds high-temperature steam, and injection machine is finished operations such as die sinking pickup simultaneously.By in the fluid passage of mould 501, alternately feeding high-temperature steam and cooling water repeatedly, be that the temperature of the mold cavity surface of mould 501 alternately changes like this, realize that production has the high goods of surface quality.Alternately enter between the mould fluid passage at steam/cooling water and clean owing to used compressed air in the device of the present utility model, the efficient of heating and cooling is improved greatly, thereby shaping cycle duration is shortened.
Such as: wall thickness of moulding be 2.5 millimeters, length be 350 millimeters, wide be 350 millimeters shaped as frame part, the width of frame is 80 millimeters, shape as shown in Figure 2.Adopt a kind of PC/ABS compound to come moulding, the softening point temperature of this material is 90 ℃.A die cavity is arranged in the mould.Position at the close mold cavity surface of cover half is equipped with 4 temperature sensors (described 103 and 104), roughly in the centre position of each frame.Temperature sensor is connected to central control unit 701.The cooling water outlet and inlet of cover half is connected according to device noted earlier and of the present utility model, and the cooling water outlet and inlet of dynamic model only is connected with cooling-water machine.Central control unit of the present utility model is connected with the input port with the relevant signal output of injection machine.After connection finishes, open the power supply of injection machine and the utility model device.Compare test.
First kind of scheme, the method by central control unit 701 programming or parameter adjustment places the position of forever closing with switch valve 303, does not promptly use the compressed air cleaning in the steam/cooling water path in cover half.When injection machine sent the matched moulds signal, switch valve 204 was opened, and input high-temperature steam heating mould mold cavity surface makes it to be heated to 120 ℃ in mould.When the detected temperature of temperature sensor reaches 120 ℃, but central control unit 701 sends the injection signal to injection moulding machine.Receive when central control module 701 and to send instruction after injection is finished signal and close switch valve 204, and send instruction transfer valve 406 is delivered to cooling water pump in the cooling duct of cover half, the mold cavity surface of mould is cooled off.When temperature sensor detects temperature and reaches 80 ℃, but central control unit 701 sends the die sinking signal to injection machine.After this injection machine is finished die sinking pickup work.And will switch to by the cooling water of transfer valve 406 and flow to the condenser direction.Injection machine begins next mold-closing injection operation then.By this scheme, the whole circulation time needs 95 seconds.But in the surface-brightening of the goods of cover half moulding, weldless trace, defectives such as current mark.
Second kind of scheme according to method described in the utility model and step, before feeding Steam Heating and before feeding water quench, all opened switch valve 303 usefulness compressed air the fluid passage in the cover half cleaned.Adopt this scheme, whole shaping cycle duration only needs 78 seconds, and has light on the surface of cover half moulding, weldless trace, defectives such as current mark.
Contrast above-mentioned two kinds of schemes, it is about 20% that the utility model can shorten molding cycle, has obvious superiority.
Though below design and embodiment according to the utility model purpose 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 utility model, and this improvement and conversion still should belong to protection domain of the present utility model.
Claims (1)
1, a kind of device of controlling the injection mold variations in temperature is characterized in that:
A) steam/chilled(cooling) water return (CWR), comprise by pipeline steam generator (201), hand switch valve (202), hand switch valve (203), controlled switch valve (204), hand switch valve (502), fluid passage in the mould (501), hand switch valve (503), controlled switch valve (407), hand switch valve (403), thermostat (401), hand switch valve (402), pump (405) by motor (404) driving, the path that electromagnetic switching valve (406) links into an integrated entity is with a port of export and the condenser (408) that is connected of the two ends of controlled switch valve (407) by pipeline and electromagnetic switching valve (406);
B) and compressed air cleaning path and pilot gas path, comprising by compressed air supply (301), hand switch valve (302), controlled switch valve (303) is linked in sequence by pipeline, and the outlet of controlled switch valve (303) by pipeline with a) described in the compressed air cleaning path formed after being connected of controlled switch valve (204) in steam/chilled(cooling) water return (CWR) and the pipeline between controlled switch valve (406) and the hand switch valve (502), and on the pipeline between hand switch valve (302) and the controlled switch valve (303), compressed air is connected respectively to magnetic valve (304) with pipeline, magnetic valve (305) and magnetic valve (306) and and then be connected respectively to controlled switch valve (303), (407), (204) the pilot gas path of Zu Chenging;
C) and central control unit (701), form by programmable processor and operation interface, be connected with communication cable with magnetic valve (304), (305), (306) and electromagnetic switching valve (406), and be connected the exchange cycles signal with the control system (702) of injection moulding machine, also be installed at least one temperature sensor (104) that at least one temperature sensor (103) used near the measurement high temperature of the mold cavity surface of mould (501) and measurement low temperature uses and be connected and receive temperature signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200759046U CN201169046Y (en) | 2007-11-23 | 2007-11-23 | Apparatus for rapidly controlling injection mold temperature change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200759046U CN201169046Y (en) | 2007-11-23 | 2007-11-23 | Apparatus for rapidly controlling injection mold temperature change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201169046Y true CN201169046Y (en) | 2008-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200759046U Expired - Lifetime CN201169046Y (en) | 2007-11-23 | 2007-11-23 | Apparatus for rapidly controlling injection mold temperature change |
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| Country | Link |
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| CN (1) | CN201169046Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019676A (en) * | 2010-10-29 | 2011-04-20 | 深圳大学 | Heating equipment of steam heating mould |
| CN103185656A (en) * | 2012-01-02 | 2013-07-03 | 恩格尔奥地利有限公司 | Method used for monitoring temperature control device of dies of injection molding machine or die-casting machine |
| CN103648745A (en) * | 2011-06-30 | 2014-03-19 | 佳能株式会社 | Manufacturing method of molding and mold |
| CN104162958A (en) * | 2013-05-17 | 2014-11-26 | 上海甬兴塑胶有限公司 | Quick steam forming device for decoration panel |
| CN107020730A (en) * | 2017-05-30 | 2017-08-08 | 天津颐和中威精密机器有限公司 | Injection moulding machine into mould time equalization control system |
| CN112936708A (en) * | 2021-01-25 | 2021-06-11 | 芜湖市洪源新材料有限公司 | Heating control structure of vacuum forming device |
| CN114074452A (en) * | 2020-08-21 | 2022-02-22 | 汉达精密电子(昆山)有限公司 | A vapor-compressed gas combined rapid cooling and rapid heating system and method |
| CN121018849A (en) * | 2025-10-29 | 2025-11-28 | 浙江华腾电子有限公司 | A method for preparing an injection mold for molding aerospace electrical appliance bases |
-
2007
- 2007-11-23 CN CNU2007200759046U patent/CN201169046Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019676A (en) * | 2010-10-29 | 2011-04-20 | 深圳大学 | Heating equipment of steam heating mould |
| CN103648745A (en) * | 2011-06-30 | 2014-03-19 | 佳能株式会社 | Manufacturing method of molding and mold |
| CN103648745B (en) * | 2011-06-30 | 2015-12-23 | 佳能株式会社 | The manufacture method of mechanograph and mould |
| CN103185656A (en) * | 2012-01-02 | 2013-07-03 | 恩格尔奥地利有限公司 | Method used for monitoring temperature control device of dies of injection molding machine or die-casting machine |
| CN104162958A (en) * | 2013-05-17 | 2014-11-26 | 上海甬兴塑胶有限公司 | Quick steam forming device for decoration panel |
| CN104162958B (en) * | 2013-05-17 | 2017-06-30 | 上海甬兴塑胶有限公司 | One kind decoration panel rapid vapor shaped device |
| CN107020730A (en) * | 2017-05-30 | 2017-08-08 | 天津颐和中威精密机器有限公司 | Injection moulding machine into mould time equalization control system |
| CN114074452A (en) * | 2020-08-21 | 2022-02-22 | 汉达精密电子(昆山)有限公司 | A vapor-compressed gas combined rapid cooling and rapid heating system and method |
| CN114074452B (en) * | 2020-08-21 | 2024-03-19 | 汉达精密电子(昆山)有限公司 | A vapor compressed gas combined with rapid cooling and rapid heating system and method |
| CN112936708A (en) * | 2021-01-25 | 2021-06-11 | 芜湖市洪源新材料有限公司 | Heating control structure of vacuum forming device |
| CN121018849A (en) * | 2025-10-29 | 2025-11-28 | 浙江华腾电子有限公司 | A method for preparing an injection mold for molding aerospace electrical appliance bases |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081224 |