CN101362375A - Heating arrangement of steam heating die and injection technology using the same - Google Patents
Heating arrangement of steam heating die and injection technology using the same Download PDFInfo
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- CN101362375A CN101362375A CNA2008101417064A CN200810141706A CN101362375A CN 101362375 A CN101362375 A CN 101362375A CN A2008101417064 A CNA2008101417064 A CN A2008101417064A CN 200810141706 A CN200810141706 A CN 200810141706A CN 101362375 A CN101362375 A CN 101362375A
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Abstract
The invention relates to a heating device for heating a mould by using steam, which comprises a mould core with a pouring channel, a high-temperature steam branch for generating high-temperature steam and a high-temperature dry air branch for generating high-temperature dry air, wherein, a filling valve and a spill valve which are communicated with a mould cavity are arranged on the mould core, and the high-temperature steam branch or the high-temperature dry air branch can be continuously guided into the mould cavity by the filling valve and the spill valve; a shutoff valve is arranged on the pouring channel, and used for sealing the pouring channel when the steam or dry air is introduced into the mould cavity. The surface layer of the mould cavity is heated by using the high-temperature steam introduced by the high-temperature steam branch, the steam and the moisture in the mould cavity are removed by using the high-temperature dry air, therefore, the entire mould core is not required to be heated, the heating time to the mould is reduced, and the energy consumption is also reduced; and meanwhile, the structure of the mould is simple, and the cost for manufacturing the mould is low. The invention also discloses a casting process for production by using the device.
Description
[technical field]
The present invention relates to technology of die manufacturing, more particularly, relate to a kind of firing equipment that utilizes high-temperature steam heating mould die cavity top layer, and use this equipment to carry out the processing technology of injection moulding.
[background technology]
In the prior art, traditional injection mold heater adopts heating to add hot water or the good liquid of heat conduction wet goods heat-conductive characteristic usually, then heated water or conduction oil are fed in the mold heated runner, make mould can keep the temperature preset, as patent CN293328, CN2621910Y and CN200957650 in the injecting glue stage.
Studies show that, having more than 100 degrees centigrade if can keep mold temperature in injection phase, especially, when mold temperature reaches more than 150 degrees centigrade, the part strength height that injection mo(u)lding is produced; This is because mould is heated during injection moulding, makes the flowability of raw material in die cavity improve, and has avoided the cooling back to be easy to generate region of stress concentration because of internal density is inhomogeneous.In addition, because the superficial density of part is also very even, this makes surface quality of workpieces very good, welds line as eliminating piece surface, welds trace, ripple, filamentary silver line, surperficial shrink phenomenon, improve product surface quality, product does not need the follow-up process of surface treatment that sprays paint.After the mobile raising of raw material simultaneously, can reduce the floating fine phenomenon that adds fine part, improve yield rate 20-30%; Defectives such as the not high scarce material that produces of flowability, gas line in the time of also can avoiding because of thin-walled injection moulding; Injection cycle in the time of can also reducing the heavy wall moulding.
Increasing to the demand of injection-moulded plastic part surface best bright finish at present, what rise is various appearance to the mold heated technology thereupon, directly heat core rod technology etc. as high-temperature steam heating core rod technology, intermediate frequency or high-frequency heating core rod technology, high-temperature water or heat-conducting oil heating core rod technology and electrothermal tube, purpose is to make cavity surface keep higher temperature in the injection process, makes piece surface reach best bright finish, part bulk strength height.A something in common of these equipment is, cavity surface temperature is to rely on the heat conduction, with heat from the core rod conducted inside to cavity surface.The problem of its existence is that heat is not to be applied directly to cavity surface, and mold heated all needs the relative long time with the cooling required time; Because whole core rod all is heated, produce the required heat of core rod heating so need to consume bigger energy; And owing to bury heating element heater underground in core rod, make Mold Making process relative complex, production cost is very high.And these heating techniques or method only are aimed at the back mould and heat, because if to the front mould heating, because heat conducting cause, thimble also can progressively be heated, thereby the stuck phenomenon of mould thimble can take place easily; But only heating back mould core rod can not thoroughly solve the defective that moulding is easy to generate distortion or warpage again.
In addition, adopt in the mode of high temperature oil, water and Steam Heating mould, special runner need be set on core rod allows these thermal mediums pass through, but runner can be restricted on arranging because of the structure of core rod itself, be easy to like this make that the skin temperature of back mould die cavity is inhomogeneous, the moulding defective that causes some structure can not be resolved.
In addition, also having a weak point in the said equipment is exactly to need to consume more energy.With one 300 tons injection machines is example, and the rated input power of electrical heating die apparatus is about 30kW, and the rated input power of 100 injection machines then reaches 3000kW.
France RocTool company has developed the technology of utilizing electromagnetic induction phenomenon heating mould surface, and it is dark that the die surface part will be heated to 0.2mm, and the part of mould inside 99.9% still is in the state of cooling.But the module of mould must adopt the manufacturing of magnetic steel material.In order to guarantee effective electromagnetism conduction, must contain chromium or nickel in the mold materials, and the magnetic conductivity of P20 mould steel can not satisfy this requirement.P20 is U.S.'s mould steel trade mark, and corresponding is 718 mould steel of Sweden, is to make medium-to-high grade mould core material extremely commonly used, and its equipment cost is higher, and the die cost during manufacturing is also high.
[summary of the invention]
The technical problem to be solved in the present invention is, the defective that power consumption height, production cycle are long or equipment cost is high, die cost is high at various mold heating devices existence in the prior art, a kind of firing equipment of Steam Heating mould is provided, and this equipment can utilize high-temperature steam that the die cavity top layer is directly heated.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of firing equipment that utilizes the Steam Heating mould, comprise the core rod of being with running channel, produce the high-temperature steam branch road of high-temperature steam and the high temperature dry air branch road of generation high temperature dry air, described core rod is provided with injection valve and the spill valve that is communicated with die cavity, and described injection valve and spill valve can continue to import high-temperature steam branch road or high temperature dry air branch road in the die cavity; Described running channel is provided with stop valve, sealing running channel when described stop valve imports steam or dry air in die cavity.
In the firing equipment that utilizes the Steam Heating mould of the present invention, described high-temperature steam branch road comprises and is connected the steam generator that is provided with and can produces high-temperature steam with injection valve, is arranged on the steam inlet valve that control high-temperature steam branch road between injection valve and the steam generator inserts injection valve.
In the firing equipment that utilizes the Steam Heating mould of the present invention, described steam generator comprises the steam boiler that is provided with steam (vapor) outlet and to the water supply tank of steam boiler supplementing water, the steam (vapor) outlet of described steam boiler is connected setting with described steam inlet valve.
In the firing equipment that utilizes the Steam Heating mould of the present invention, be provided with the moisturizing booster pump between described water supply tank and the steam boiler.
In the firing equipment that utilizes the Steam Heating mould of the present invention, be provided with communicating pipe between described spill valve and the water supply tank.
In the firing equipment that utilizes the Steam Heating mould of the present invention, be positioned at water supply tank one end described communicating pipe and be provided with condenser coil.
In the firing equipment that utilizes the Steam Heating mould of the present invention, described high temperature dry air branch road comprises and is connected the high temperature dry air generating means that is provided with and can produces high temperature dry air with injection valve, is arranged on the dry air intake valve that control high temperature dry air branch road between injection valve and the high temperature dry air generating means inserts injection valve.
In the firing equipment that utilizes the Steam Heating mould of the present invention, the inlet end of described injection valve is provided with the communicating pipe that is communicated with described stop valve, this communicating pipe causes the stop valve place with the high-temperature steam in high temperature dry air in the high temperature dry air branch road or the high-temperature steam branch road, makes stop valve be in normally off.
In the firing equipment that utilizes the Steam Heating mould of the present invention, described high temperature dry air generating means comprises successively the air heater that connects, air dryer, air filter, the air compressor that removes oil rectifier and import air from the external world, and described dry air intake valve is arranged on the place, gas outlet of air heater.
In the firing equipment that utilizes the Steam Heating mould of the present invention, described running channel is arranged on the mould of back, described injection valve is arranged on the front mould in the air intake duct, described injection valve is included in the spool that is arranged in the air intake duct and makes spool sealing air intake duct and be in spring under the normally off, and the other end of described spool can slide to the running channel place of back mould and running channel is sealed under the effect of the fluid that enters air intake duct.
Another technical problem that the present invention will solve is, the defective that power consumption height, injection cycle are long or equipment cost is high, die cost is high at various mold heating devices in the prior art exist provides a kind of Shooting Technique of utilizing high-temperature steam directly to heat die cavity.
The present invention solves this technical problem the technical scheme that is adopted: utilize aforesaid firing equipment, a kind of Shooting Technique is provided, may further comprise the steps:
S1, matched moulds;
S2, close running channel, injection valve and spill valve and high-temperature steam branch road are connected, and continue to feed high-temperature steam in die cavity, reach preset temperature until the die cavity skin temperature;
S3, injection valve and spill valve switch to and the high temperature dry air branch road is connected, and continue to feed high temperature dry air in die cavity, and steam is discharged from and cavity surface is dried in die cavity;
S4, close injection valve and spill valve, open running channel, shoot material;
The demoulding after S5, pressurize, the cooling.
In Shooting Technique of the present invention, the high temperature dry air among the described step S3 is preferably passed through pressurized treatment; High-temperature steam among the described step S2 also preferably passes through pressurized treatment.
Implement the firing equipment of Steam Heating mould of the present invention, has following beneficial effect: be communicated in the die cavity of core rod by injection valve and spill valve by high-temperature steam branch road and high temperature dry air branch road are set, like this behind the mould matched moulds, the high-temperature steam that the high-temperature steam branch road produces can enter die cavity by injection valve and flow out to outside the die cavity by spill valve, high-temperature steam and cavity surface are carried out heat exchange, thereby have improved the temperature on die cavity top layer in the short time at the utmost point; After continuing in die cavity, to feed steam a period of time (several seconds), the temperature on die cavity top layer (cavity surface begins about deeply 2-4mm) is identical with the temperature of cavity surface or be close, can be provided with this temperature reach or slightly exceed shoot material before to the temperature requirement of die cavity (when needs shot material when this temperature design according to mould raw material in die cavity, have good flowability or requirement of strength design or surface quality require definite); And the temperature basically identical before the temperature at other positions of core rod and the matched moulds makes this firing equipment only need the energy of a small amount of heated mould cavity surface layer like this, and does not need whole core rod heating, so energy consumption is low.After the die cavity top layer reaches preset temperature, switching the high temperature dry air branch road by injection valve and spill valve is communicated with die cavity, continue in die cavity, to feed high temperature dry air after a period of time, the moisture content that utilizes high temperature dry air steam unnecessary in the die cavity can be discharged and will be sticked to cavity surface is taken away, and makes whole die cavity drying; Because the high temperature air of this moment is the high temperature that meets design requirement, therefore, the temperature on die cavity top layer can not reduce substantially.Owing to when in die cavity, feeding high-temperature steam or high temperature dry air,, thereby avoid high-temperature steam or high temperature dry air to enter the mouth that shoots material, influence material composition or cause the uneven problem of raw material from running channel with the running channel sealing.
After the die cavity temperature reaches preset temperature, shoot material, the demoulding after the pressurize, cooling, can finish whole process.When cooling, owing to have only the die cavity skin temperature higher, so shorten cool time, also shortened the production cycle of single-piece, improved production efficiency.
In addition, whole firing equipment does not need mould inside is done special structural modification, only the mould that needs mold materials commonly used at present to make can adopt this firing equipment, and the device that produces high-temperature steam and high temperature dry air is very general and common, extensive use in industry, its equipment cost is lower comparatively speaking, and therefore whole firing equipment cost reduces, the Mold Making cost has also reduced.In like manner, the Shooting Technique of implementing this equipment of employing of the present invention can reach equally and cut down the consumption of energy, enhances productivity, and reduces the effect of equipment cost and Mold Making cost.
The invention will be further described below in conjunction with drawings and Examples.
[description of drawings]
Fig. 1 is the structural representation that utilizes the firing equipment of Steam Heating mould of the present invention;
Fig. 2 is the simplified structure schematic diagram that utilizes the firing equipment of Steam Heating mould of the present invention;
Fig. 3 is the structural representation of die cavity inside in the firing equipment that utilizes the Steam Heating mould of the present invention;
Fig. 4 is of the present invention to utilize the another kind of structural representation of die cavity inside in the firing equipment of Steam Heating mould;
Fig. 5 is the flow chart of Shooting Technique of the present invention.
[specific embodiment]
As shown in Figure 1, 2, 3, in the preferred embodiment of the firing equipment that utilizes the Steam Heating mould of the present invention, comprise core rod 1, be arranged on injection valve 3 and spill valve 2 on the core rod 1, be arranged on stop valve, high-temperature steam branch road 20 and high temperature dry air branch road 30 on the core rod running channel.Wherein, core rod 1 is provided with running channel, is used for raw material is injected in the die cavity 4 of core rod 1.Injection valve 3 and spill valve 2 are arranged on the core rod 1 and with die cavity 4 and are communicated with, and are the check valve of unidirectional conducting.Injection valve 3 and spill valve 2 are not closed when having high-temperature steam or high temperature dry air to import, to guarantee that whole die cavity 4 is airtight.According to concrete mould structure difference, injection valve 3 and spill valve 2 also can be set to a plurality of, and guaranteeing at least has an injection valve 3 and spill valve 2 to be communicated with it in the die cavity 4 of each separate space.
High-temperature steam branch road 20 comprises steam generator, be provided with steam inlet valve 22 between steam generator and the injection valve 3, be used to control high-temperature steam branch road 20 and insert injection valve 3, thereby the high-temperature steam that produces in the high-temperature steam branch road 20 is imported in the die cavity 4 by injection valve 3.Steam generator can be the device of various generation high-temperature steams, in a preferred embodiment of the invention, steam generator comprises steam boiler 23 and water supply tank 24, wherein, steam boiler 23 is provided with a steam (vapor) outlet, and above-mentioned steam inlet valve 22 can be arranged on steam outlet, water supply tank 24 moisturizing in steam boiler 23, be heated the back and form high-temperature steam in steam boiler 23, water supply tank 24 can connect running water 25, and can be by water compensating valve being installed to water supply tank 24 automatic water supplements.Between water supply tank 24 and steam boiler 23, also be provided with moisturizing booster pump 26, can continue to produce high-temperature steam to guarantee steam boiler 23.Also can by-passing valve 27 be set simultaneously,,, form self-loopa moisturizing booster pump 26 other connecing so that when not needing the moisturizing supercharging at moisturizing booster pump 26 places.When steam inlet valve 22 was opened, injection valve 3 accessed to die cavity 4 with high-temperature steam branch road 20, and the high-temperature steam that steam generator produces enters in the die cavity 4 and cavity surface carries out discharging from spill valve 2 after the heat exchange; Continue to feed high-temperature steam after a period of time, the temperature on die cavity top layer improves fast, until reaching default temperature, can monitor this temperature by thermal probe to die cavity top layer is set in core rod 1, perhaps use the temperature-sensitive elements such as heat sensor of other types to monitor, perhaps directly debug,, operate again to obtain the optimum value of these parameters by temperature and pressure and the duration of regulating high-temperature steam.
In high temperature dry air branch road 30, comprise the dry air intake valve 32 of the high temperature dry air branch road 30 access injection valves 3 that high temperature dry air generating means and control high temperature dry air generating means produce.Wherein the high temperature dry air generating means can be set to comprise air heater 33, air compressor 34 and air dryer 37, outside air forms gases at high pressure through air compressor 34 backs successively like this, the gas pressure that forms preferably is set to 2-10 atmospheric pressure, preferably is set to 4-8 atmospheric pressure; Become dry air after removing moisture through air dryer 37 again, through air heater 33 heating, make the temperature of dry air reach default temperature then, promptly equal or be slightly larger than the die cavity skin temperature that meets the demands, thereby form high temperature dry air.Preferably air being carried out filtering before air enters air heater handles, therefore, be preferably in and air filter 36 be set between air heater 33 and the air compressor 34 and remove oil rectifier 35, with suspensions such as the impurity in the removing air, dust, guarantee that the air that enter in the die cavity 4 are clean.When dry air intake valve 32 is opened, injection valve 3 inserts high temperature dry air branch road 30 in the die cavity 4, high temperature dry air is discharged die cavity 4 with the steam in the die cavity 4 by spill valve 2, and the water evaporates that will stick to cavity surface is simultaneously discharged again, has guaranteed the clean influence that is not subjected to steam in the die cavity 4.
As shown in Figure 3, on core rod 1, be provided with main running channel 51 and divide running channel 52, be respectively equipped with main running channel stop valve 61 in the running channel and divide running channel stop valve 62.Injection valve 3, spill valve 2, branch running channel stop valve 62 both can be arranged on front mould, and the back mould also can be set.When high-temperature steam branch road 20 or high temperature dry air branch road 30 access die cavitys 4, control main running channel stop valve 61 and divide running channel stop valve 62 to end, make running channel seal.So just can prevent effectively that high-temperature steam or high temperature dry air from entering running channel.Main running channel stop valve 61 preferably is set and divides running channel stop valve 62 also to be the check valve of unidirectional conducting, the direction that promptly shoots material conducting oppositely then ends.Also can be provided with the communicating pipe 63 that is communicated with stop valve at the inlet end of injection valve 3, as shown in Figure 1, 2, the inlet of this communicating pipe 63 is arranged between injection valve 3 and the dry air intake valve 32, should also can be arranged between injection valve 3 and the steam inlet valve 22 communicating pipe 63 equally.Like this, when die cavity injects high temperature dry air or high-temperature steam, high temperature dry air or high-temperature steam also can flow to the stop valve place by communicating pipe 63, main running channel stop valve 61 and branch running channel stop valve 62 are closed under pressure, thereby when guaranteeing in die cavity, to feed high temperature dry air or high-temperature steam, stop valve seals running channel, prevents that high temperature dry air or high-temperature steam from entering running channel.Control valve 64,65 also can be set on this communicating pipe to be controlled and is communicated to main running channel stop valve 61 and divides communicating pipe 63 of running channel stop valve 62,63 ' break-make.Equally, also can be set a communicating pipe that is communicated to spill valve, also be provided with the control valve 67 of this break-make on this communicating pipe 66 communicating pipe, same, before the beginning injection moulding, can communicating pipe 66 be opened by control valve equally, utilize high temperature dry air that spill valve is closed.
As shown in Figure 1, in preferred embodiment of the present invention, also can between spill valve 3 and water supply tank 24, be set communicating pipe 7, communicating pipe 7 end at water supply tank 24 be provided with condenser coil 71, make the high-temperature steam or the high temperature dry air of discharging can enter in the water supply tank 24 from spill valve 3.Because the high-temperature steam or the high temperature dry air of discharging from spill valve 3 still have higher temperature, high-temperature steam or high temperature dry air can be mixed with the water of not heating in water supply tank 24 and carried out heat exchange like this, thereby avoiding these heats directly to enter atmosphere has wasted, and use it for water in the default water supply tank 24, just improved certain temperature before making these water enter steam boiler 23, improve the energy utilization rate, further reduced energy consumption.
As shown in Figure 4, in the firing equipment that utilizes the Steam Heating mould of the present invention, injection valve 3 and stop valve structure and the above embodiments in mould are different.Wherein, running channel 51 is arranged on the mould 11 of back, and injection valve 3 is arranged on the front mould 12.Be provided with a slideway 83 that is communicated with air intake duct 82 and die cavity in the front mould, injection valve 3 comprises the spool 81 that is arranged in the slideway 83, and spool 81 can slide in slideway 83.The bezel ring, 89 of a band centre bore 90 can be set in air intake duct 82, and this bezel ring, 89 can be by the setting that is threaded with air intake duct 82 sidewalls; Thereby spool 81 is limited in the slideway 83, prevents that spool 81 from skidding off from air intake duct 82.First end 84 of spool is complementary with air intake duct 82 ends, and when first end 84 of spool slided to air intake duct 82, spool 81 can be with air intake duct 82 sealings; Second end 85 of spool is complementary with running channel 51 ends, and when second end 85 of spool slided to running channel 51 ends, spool 81 can be with running channel 51 sealings.Running channel 51 ends that are preferably in the die joint place are provided with a taper counterbore 86, second end 85 of spool are arranged to the taper that is complementary with this taper counterbore 86; Simultaneously, a conical surface 87 is set in slideway 84, is arranged to the shape that is complementary with this conical surface 87 at first end 84 of spool.When from air intake duct 82 when injection valve 3 injects high-temperature steams or high temperature dry air, high-temperature steam or high temperature dry air promote spool 81 and slide to running channel 51, then spool second end 85 seals up running channel 51, prevent that high-temperature steam or high temperature dry air from entering in the running channel 51, plays the effect of the stop valve in the foregoing description; And forming gap 88 between the conical surface of spool first end and slideway, high-temperature steam or high temperature dry air flow in the die cavity 4 through this gap 88, play the effect of injection valve.When shooting material beginning, the raw material promotion spool 81 that injects from running channel 51 slides to air intake duct 82, when spool first end 84 slides to the air intake duct end, forms conical surface seal between spool 81 and the slideway 83, prevents that raw material from entering in the air intake duct 82.This injection valve 3 has two-way effect of ending simultaneously like this, has save the trouble that stop valve is set in addition, makes that the structure of mould is more simple, it is more convenient to make, saves cost.
Preferably spill valve is arranged on the position of departing from die cavity on the front mould, be communicated with by the groove 22 that is arranged on the die joint place between the outlet 21 of spill valve and the die cavity, die cavity is just in time between spill valve and injection valve like this, flow out from spill valve the every nook and cranny that the high temperature dry air of injecting from injection valve can flow to die cavity again, avoid producing flow dead, thereby steam in the assurance die cavity everywhere can both be discharged from.
As shown in Figure 5, in using the Shooting Technique of utilizing the Steam Heating mould of the present invention, can take following step: earlier with mould matched moulds, step 501 as shown in Figure 4.Operate stop valve again, close running channel; Open steam inlet valve 22 simultaneously, because injection valve 3 is unidirectional conducting,, continue in die cavity 4, to feed high-temperature steam so injection valve 3 is washed open by high-temperature steam and high-temperature steam branch road 20 is inserted die cavity 4, reach preset temperature until the die cavity skin temperature, as shown in Figure 4 step 503.In order to guarantee that high-temperature steam has the good mobility energy, preferably high-temperature steam is carried out pressurized treatments, as discharging again after the supercharging in high-temperature steam generator.Because hypotony can have influence on the mobile performance of high-temperature steam in die cavity, too highly then need to guarantee the explosion-proof performance of associated vessel and increase manufacturing cost.In this heater of the present invention, the pressure of high-temperature steam preferably is set to 2-10 atmospheric pressure, preferably is set to 4-8 atmospheric pressure.Steam off intake valve 22 and open dry air intake valve 32 again, same injection valve 3 is washed open by high temperature dry air and high temperature dry air branch road 30 is inserted die cavitys 4, and high-temperature steam branch road 20 is disconnected; Thereby continue to feed high temperature dry air in die cavity 4, the moisture that adheres on steam in die cavity 4 and the cavity surface is evaporated the back and discharges, as shown in Figure 4 step 505.Close dry air intake valve 32 again, then injection valve 3 and spill valve 2 can be reduced to closed state automatically, are about to high air branch road of high temperature and high-temperature steam branch road 20 and all disconnect; Begin to shoot material, the raw material that the stop valve that is provided with on the running channel is launched into is washed open, perhaps by extension spring is set it is drawn back, and is full of by raw material until whole die cavity 4, as shown in FIG. step 507; Make the good fluidity of raw material because cavity surface temperature is higher this moment, thereby make workpiece can obtain higher surface quality and internal stress distribution.After pressurize a period of time, can take nature cooling or other modes to quicken die cavity 4 coolings, the demoulding again, step 509 as shown in Figure 4, whole Shooting Technique finishes, thereby finishes injection cycle one time.Equally, the high temperature dry air that feeds in die cavity is preferably also passed through pressurized treatment, as heating again after utilizing compressor with supercharging air.The pressure of high temperature dry air preferably is set to 2-10 atmospheric pressure, preferably is set to 4-8 atmospheric pressure.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (12)
1. firing equipment that utilizes the Steam Heating mould, comprise the core rod of being with running channel, it is characterized in that, also comprise high-temperature steam branch road that produces high-temperature steam and the high temperature dry air branch road that produces high temperature dry air, described core rod is provided with injection valve and the spill valve that is communicated with die cavity, and described injection valve and spill valve can continue to import high-temperature steam branch road or high temperature dry air branch road in the die cavity; Described running channel is provided with stop valve, sealing running channel when described stop valve imports steam or dry air in die cavity.
2. mold heated equipment according to claim 1, it is characterized in that described high-temperature steam branch road comprises and is connected the steam generator that is provided with and can produces high-temperature steam with injection valve, is arranged on the steam inlet valve that control high-temperature steam branch road between injection valve and the steam generator inserts injection valve.
3. mold heated equipment according to claim 2, it is characterized in that, described steam generator comprises the steam boiler that is provided with steam (vapor) outlet and to the water supply tank of steam boiler supplementing water, the steam (vapor) outlet of described steam boiler is connected setting with described steam inlet valve.
4. mold heated equipment according to claim 3 is characterized in that, is provided with the moisturizing booster pump between described water supply tank and the steam boiler.
5. mold heated equipment according to claim 4 is characterized in that, is provided with communicating pipe between described spill valve and the water supply tank.
6. mold heated equipment according to claim 5 is characterized in that, is positioned at water supply tank one end described communicating pipe and is provided with condenser coil.
7. mold heated equipment according to claim 1, it is characterized in that described high temperature dry air branch road comprises and is connected the high temperature dry air generating means that is provided with and can produces high temperature dry air with injection valve, is arranged on the dry air intake valve that control high temperature dry air branch road between injection valve and the high temperature dry air generating means inserts injection valve.
8. according to claim 2 or 7 described mold heated equipment, it is characterized in that, the inlet end of described injection valve is provided with the communicating pipe that is communicated with described stop valve, this communicating pipe causes the stop valve place with the high-temperature steam in high temperature dry air in the high temperature dry air branch road or the high-temperature steam branch road, makes stop valve be in normally off.
9. mold heated equipment according to claim 7, it is characterized in that, described high temperature dry air generating means comprises successively the air heater that connects, air dryer, air filter, the air compressor that removes oil rectifier and import air from the external world, and described dry air intake valve is arranged on the place, gas outlet of air heater.
10. mold heated equipment according to claim 1, it is characterized in that, described running channel is arranged on the mould of back, described injection valve is arranged on the front mould in the air intake duct, described injection valve is included in the spool that is arranged in the air intake duct and makes spool sealing air intake duct and be in spring under the normally off, and the other end of described spool can slide to the running channel place of back mould and running channel is sealed under the effect of the fluid that enters air intake duct.
11. a use is characterized in that as the Shooting Technique of firing equipment as described in claims 1, may further comprise the steps:
S1, matched moulds;
S2, close running channel, injection valve and spill valve and high-temperature steam branch road are connected, and continue to feed high-temperature steam in die cavity, reach preset temperature until the die cavity skin temperature;
S3, injection valve and spill valve switch to and the high temperature dry air branch road is connected, and continue to feed high temperature dry air in die cavity, and steam is discharged from and cavity surface is dried in die cavity;
S4, close injection valve and spill valve, open running channel, shoot material;
The demoulding after S5, pressurize, the cooling.
12. Shooting Technique according to claim 11 is characterized in that, the high-temperature steam among high temperature dry air among the described step S3 and/or the described step S2 all passes through pressurized treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101417064A CN101362375B (en) | 2008-08-26 | 2008-08-26 | Heating arrangement of steam heating die and injection technology using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101417064A CN101362375B (en) | 2008-08-26 | 2008-08-26 | Heating arrangement of steam heating die and injection technology using the same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010564913.8A Division CN102145533B (en) | 2008-08-26 | 2008-08-26 | Heating equipment for steam heating mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101362375A true CN101362375A (en) | 2009-02-11 |
| CN101362375B CN101362375B (en) | 2011-06-08 |
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| CN2008101417064A Expired - Fee Related CN101362375B (en) | 2008-08-26 | 2008-08-26 | Heating arrangement of steam heating die and injection technology using the same |
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Cited By (5)
| 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 |
| CN102049843A (en) * | 2009-11-09 | 2011-05-11 | 汉达精密电子(昆山)有限公司 | Heating and cooling system |
| CN105082482A (en) * | 2014-05-23 | 2015-11-25 | 陈南吉 | Acceleration and pressurization energy saving device for injection molding machine |
| CN109910140A (en) * | 2018-08-31 | 2019-06-21 | 上海圣奎塑业有限公司 | Insulation board steam heats production equipment and method |
| CN114179307A (en) * | 2021-11-29 | 2022-03-15 | 葛洪三 | Injection molding method |
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2008
- 2008-08-26 CN CN2008101417064A patent/CN101362375B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049843A (en) * | 2009-11-09 | 2011-05-11 | 汉达精密电子(昆山)有限公司 | Heating and cooling system |
| CN102049843B (en) * | 2009-11-09 | 2013-04-24 | 汉达精密电子(昆山)有限公司 | Heating and cooling system |
| CN102019676A (en) * | 2010-10-29 | 2011-04-20 | 深圳大学 | Heating equipment of steam heating mould |
| CN105082482A (en) * | 2014-05-23 | 2015-11-25 | 陈南吉 | Acceleration and pressurization energy saving device for injection molding machine |
| CN109910140A (en) * | 2018-08-31 | 2019-06-21 | 上海圣奎塑业有限公司 | Insulation board steam heats production equipment and method |
| CN114179307A (en) * | 2021-11-29 | 2022-03-15 | 葛洪三 | Injection molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101362375B (en) | 2011-06-08 |
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