CN101020355A - Heating and cooling system for injection molding machine - Google Patents
Heating and cooling system for injection molding machine Download PDFInfo
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- CN101020355A CN101020355A CN 200710027021 CN200710027021A CN101020355A CN 101020355 A CN101020355 A CN 101020355A CN 200710027021 CN200710027021 CN 200710027021 CN 200710027021 A CN200710027021 A CN 200710027021A CN 101020355 A CN101020355 A CN 101020355A
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- clamping seat
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Abstract
The present invention relates to one kind of heating and cooling system for injection molding machine. In the mold locking unit comprising one first mold seat and one second mold seat capable of being closed and opened, there are at least one heater set between the second mold seat and the second mold block and one fluid pipe inside the first mold seat. The heating and cooling system can heat and cool the mold fast, and this can eliminate faults of the molded product, reduce mold opening time and raise production capacity.
Description
[technical field]
The present invention relates to heating of a kind of Jet forming machine and cooling system, be meant especially a kind of can be to the mould system of heating and cooling rapidly.
[background technology]
Press, the method for plastic shaping is divided into ejection formation, blow molding, vacuum thermoforming, compression forming, extraction moulding ... or the like.Wherein, ejection formation can output plastic product in shape, fascia from simple cup to complexity, big or small then can both make to the large-scale finished products such as bathtub that surpass 20Kg from the clock and watch pinion of 0.01g, the advantage that have complex structure, size is accurate and quality is stable, be among the various plastic shaping methods, most important, also be the technology of the most generally using.Its material commonly used then includes polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and ABS etc.
So-called plastics ejection forming technique mainly is to utilize Jet forming machine, the plastic raw materials (calling melten gel in the following text) that melts is injected among the confined space of metal die, the melten gel of waiting after the cooled and solidified, can obtain the plastic product of the confined space equal shape of metal die therewith in metal die.
And Jet forming machine is except injection unit (extruder), automatically controlled and oil hydraulic system, when the melten gel cooling forming, mainly is to be main formation system with mode locking unit (also claiming sandwich mold unit).This mode locking unit is by closure locking or the first clamping seat of opening and the second clamping seat (also claiming a plate and tailgate) are constituted mutually, after setting is commonly called as the module of male and female mould respectively on the first clamping seat and the second clamping seat, after making the first clamping seat and the second clamping seat closed mutually lock (matched moulds), can penetrate the program of filling and cooling forming.
In the process of aforementioned ejection formation, because when melten gel injects the die cavity of male and female module, pyrosol contacts with cold die cavity chamber wall and can form thin solidification layer, and the melten gel temperature on the close wall also can reduce, make the flowing velocity of melten gel be maximum in the center, then practically negligible near the flow velocity of chamber wall.
This melten gel is the inconsistent situation of flow velocity in the die cavity of male and female module, if in the male and female module of structure more complicated, will form sinuous flow, make and occur ripples line and joint line on the working of plastics finished product easily, add the interior air of part die cavity because of having little time to discharge formed bubble, make that the outward appearance flaw on the finished product is more apparent serious.
Outward appearance flaw on the above-mentioned plastic product is inevasible defective for many manufacturers, and also therefore many manufacturers all can spend higher secondary operations expense, with spray paint or various methodologies such as plating with it removal.
But the method for this secondary operations also can't be suitable in outward appearance and the very strict industry of dimensional requirement for some except increasing manufacturing cost.Therefore, how can be filled to by ejaculation in the process of cooling forming, avoid the generation of outward appearance flaws such as above-mentioned ripples line, bubble and joint line as far as possible, just become the target of this case inventor research at working of plastics.
Take a broad view of in the prior art, have a kind of method of utilizing the increase mold temperature to eliminate joint line to be used by industry.This method is on the first clamping seat or the second clamping seat electrical bar to be set, and utilize High Level AC Voltage to drive electrical bar and produce high heat, in order to do applying high temperature to penetrating the melten gel of filling in mould, make melten gel flow velocity in the die cavity of male and female module unanimity of can trying one's best, avoid producing sinuous flow.
In theory, this method of electrical bar heating of utilizing is no doubt feasible, but its shortcoming is firing rate very slow (generally is heated to big 200 ℃ and needs one hour approximately), and heating the time is that entire die is heated, can't be at some the position local heat on the mould, the effect on practice is very limited; Add penetrate finish after after (generally also needing one hour) can die sinking will treat mold cools down to the 80 ℃ left and right sides at least the time, make this heating means only be used on some specialities, not by widespread.
[summary of the invention]
The present invention's purpose is to provide a kind of Jet forming machine heating and cooling system, its be a kind of can be to the rapid system of heating and cooling of mould, mainly be in the mode locking unit of Jet forming machine, heater and fluid line are set, allow and be fixed on first and second module (male and female mould) on the mode locking unit in the process of ejection formation, can be heated rapidly and be cooled off, by this to reach the outward appearance flaws of eliminating on the finished product such as ripples line, bubble and joint line.
The present invention realizes like this, the mode locking unit of this system is by being constituted by the closed mutually first clamping seat and the second clamping seat that locks or open, wherein the first clamping seat medial surface can be fixed for first module, the corresponding surface of the second clamping seat and the first clamping seat is provided with second module, when first and second clamping seat locks mutually, make first and second module closure, the die cavity space between first and second module injected for melten gel, it is characterized in that:
Be provided with at least one heater between the second clamping seat and second module, this heater can produce high heat and see through second module melten gel is heated when melten gel is injected die cavity space between first and second module, in case the moving melten gel of fluid stopping forms sinuous flow, this heater stops heating when colloidal sol is finished; The first clamping seat inside is provided with fluid line, but but fluid input of cooling after heater stops heating, and the melten gel after ejection formation is finished is by cooling and shaping fast.
When the above-mentioned first clamping seat was implemented, the outside was provided with pipe joint and is communicated in fluid line.The second clamping seat medial surface is provided with one and is embedded and fixes the groove that second module is used, and the back then is provided with perforation and is communicated in groove.This heater generally is arranged in the storage tank of second module in the form of sheets, and its both sides respectively are provided with power line, and power line passes the perforation connection power supply of the second clamping seat.Remove this, be provided with a dividing plate between the groove of the second clamping seat and the heater, the high temperature that heater is produced can unidirectional second module that conducts to.
The effect that the present invention can reach is as follows:
1. when locking mutually, first and second clamping seat make first and second module form closure state, and when melten gel is injected die cavity space between first and second module, see through the power supply that power line provided and make the high heat of heater moment generation, can be through the conduction of second module and the melten gel in the die cavity space is heated, make melten gel flow velocity in the die cavity space that enters first and second module unanimity of can trying one's best, avoiding producing sinuous flow, and reach the purpose of eliminating the outward appearance flaws such as ripples line, bubble and joint line on the finished product by this.
2 after ejection formation is finished and is stopped the heater heating, enter fluid line in the first clamping seat by pipe joint input cooling fluid, can make cooling fluid that first module on the first clamping seat is carried out heat exchange, with the rapid cooling and shaping of the quilt of the melten gel in the die cavity space that makes first and second module, can significantly save the die sinking time of waiting for cooling by this, to reach the purpose that increases production capacity.
3. heater can utilize the direct current of high current low voltage to produce high heat, not only has the advantage of high security and Fast Heating, can also heat and the control temperature at the different parts multiple spot at the demand of mould, to reach aforementioned purpose.
4. the cooling fluid that injects in the fluid line can be cooling fluid, to reach the function of quick cooling; And for fear of when heating cooling fluid cause the danger of electric leakage, but input air is discharged cooling fluid when die sinking, after heating is next time finished and stopped the power supply supply, imports cooling fluid again, to improve security.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of first embodiment of the invention.
Fig. 2 is the structural representation of first embodiment of the invention.
Schematic diagram when Fig. 3 is the first embodiment of the invention matched moulds.
Fig. 4 is the structural representation of second embodiment of the invention.
[main element symbol description]
10........ the first clamping seat 11........ recess 12........ fluid line
13........ the pipe joint 20........ first module 21........ die cavity space
30........ the second clamping seat 31........ groove 32........ perforation
40........ the second module 41........ storage tank 50........ heater
51........ power line 60........ dividing plate 61........ breach
[specific embodiment]
As shown in Figure 1 and Figure 2, Jet forming machine heating of the present invention and cooling system include: one first clamping seat 10, one first module 20, one second clamping seat 30, one second module 40, a heater 50 and a dividing plate 60, wherein:
It is fixing for first module 20 that these first clamping seat, 10 medial surfaces are provided with recess 11, inside is provided with and is centered around recess 11 fluid line 12 on every side, the outside is provided with pipe joint 13 and is communicated in fluid line 12, when entering fluid line 12 by pipe joint 13 input cooling fluids, cooling fluid can carry out heat exchange to first module 20 on the first clamping seat 10.These first module, 20 lateral surfaces have the die cavity space 21 of the shape of both finalizing the design.During enforcement, the cooling fluid of fluid line 12 inputs can be cooling fluid or high velocity air.
This second clamping seat 30 can be with respect to 10 displacements of the first clamping seat, form locking condition (matched moulds) during the two closing, away from the time form opening, the second clamping seat 30 and the corresponding face of the first clamping seat 10 be provided with one can ccontaining second module 40 groove 31, the back then is provided with perforation 32 and is communicated in groove 31.
This second module 40 is embedded in the groove 31 of the second clamping seat 30, and when first and second clamping seat 10,30 mutual closings locked, second module 40 and first module 20 formed closure states, to seal the die cavity space 21 of first module 20; The back of this second module 40 is provided with storage tank 41 with the corresponding face of the second clamping seat 30.
This heater 50 generally is arranged in the storage tank 41 of second module 40 in the form of sheets, and its both sides respectively are provided with power line 51, and the perforation 32 that power line 51 passes the second clamping seat 30 connects power supplys, makes heater 50 be produced high heat and to 40 heating of second module.During enforcement, heater 50 is the heating plates that produce high heat with the electrical impedance principle, and its power supply then makes the high heat of heater 50 moments generation with the direct current of high current low voltage.
This dividing plate 60 is arranged between the groove 31 and heater 50 of the second clamping seat 30, and the high temperature that heater 50 is produced can unidirectional second module 40 that conducts to.During enforcement, on the dividing plate 60 with respect to the power line 51 of heater 50, but be provided with the breach 61 that power supply source line 51 passes through.
As shown in Figure 3, when first, two clamping seats 10,30 mutual closing lockings, make first, two modules 20,40 form closure state, and the melten gel (not shown) injects first, two modules 20, when becoming the die cavity space 21 of closed state between 40, heater 50 sees through the power supply that power line 51 provided and moment produces high heat, can be through the conduction of second module 40 and to the heating of the melten gels in the die cavity space 21, make and enter first, two modules 20, melten gel flow velocity in 40 the die cavity space 21 unanimity of can trying one's best, avoiding producing sinuous flow, and reach the ripples line of eliminating on the finished product by this, bubble, and the purpose of outward appearance flaw such as joint line.
After ejection formation is finished and is stopped the power supply supply of heater 50, enter fluid line 12 by the 13 input cooling fluids of the pipe joint on the first clamping seat 10, can make cooling fluid that first module 20 on the first clamping seat 10 is carried out heat exchange; At this moment, because it is made that the first clamping seat 10 and first module 20 are the thermal conductivity good metal, so can significantly save the die sinking time of waiting for cooling by this, to reach the purpose that increases production capacity fast with the rapid cooling and shaping of melten gel in the die cavity space 21 of first and second module 20,40.
Above-mentioned heating and cool time test through this case inventor, second module 40 is heated to 200 ℃ by room temperature only needs about 10 seconds, but and after stopping to heat first module 20 is cooled to 80 ℃ of die sinking, also only need about 10 seconds time, for known techniques, the time required in the processing procedure can be shortened significantly.
Moreover, the cooling fluids that inject in the fluid line 12 on the first clamping seat 10 are if during cooling fluid, cooling fluid causes the danger of electric leakage during for fear of heating, can import high velocity air when die sinking discharges cooling fluid, after heating is next time finished and is stopped the power supply supply, import cooling fluid again, to improve security.
In addition, the aforementioned direct current of high current low voltage that utilizes produces high hot heater 50, not only has the advantage of high security and Fast Heating, can also heat and the control temperature at the different parts multiple spot at the demand of mould, to reach aforementioned purpose.Embodiment for example shown in Figure 4, if when having zones of different to need local heat on second module 40, a plurality of heaters 50 can be separately positioned on the storage tank 41 interior relative positions of second module 40, make a plurality of heaters 50 give local heat to the zones of different on second module 40 simultaneously.In the present embodiment, the perforation 32 on the breach 61 that power supply source line 51 passes through on the power line 51 on a plurality of heaters 50, the dividing plate 60 and the second clamping seat 30 is equal number and the position is corresponding.
The above only is the present invention's preferred embodiment, and is non-so promptly limit to the present invention's claim; Such as use simple and easy for it modification of institute of specification of the present invention and graphic content and equivalent structure to change, all should in like manner be contained in the present invention's the claim, close and give Chen Ming.
Claims (9)
1. a Jet forming machine heats and cooling system, its mode locking unit is by being constituted by the closed mutually first clamping seat and the second clamping seat that locks or open, wherein the first clamping seat medial surface can be fixed for first module, the corresponding surface of the second clamping seat and the first clamping seat is provided with second module, first, when two clamping seats lock mutually, make first, two module closures, make first, die cavity space between two modules is injected for melten gel, it is characterized in that: be provided with at least one heater between the second clamping seat and second module, this heater injects first at melten gel, can produce high heat during die cavity space between two modules and see through second module melten gel is heated, in case the moving melten gel of fluid stopping forms sinuous flow, this heater stops heating when colloidal sol is finished; The first clamping seat inside is provided with fluid line, but but fluid input of cooling after heater stops heating, and the melten gel after ejection formation is finished is by cooling and shaping fast.
2. Jet forming machine heating and the cooling system according to claim 1 is characterized by the second clamping seat medial surface and are provided with a groove with ccontaining second module of fixing.
3. according to heating of the described Jet forming machine of claim 2 and cooling system, it is characterized by between the groove of the second clamping seat and the heater and be provided with a dividing plate.
4. Jet forming machine heating and the cooling system according to claim 3, the back that it is characterized by second module is provided with storage tank with ccontaining heater and dividing plate with the corresponding face of the second clamping seat.
5. according to heating of the described Jet forming machine of claim 4 and cooling system, it is characterized by heater and be provided with power line, the breach that the power supply source line passes through is set on the dividing plate, and have perforation power supply source line on the second clamping seat and pass to connect power supply.
6. Jet forming machine heating and the cooling system according to claim 1, it is characterized by heater is a plurality of diverse locations that are separately positioned on the second module back.
7. Jet forming machine heating and the cooling system according to claim 1, it is characterized by heater is the heating plate that produces high heat with the electrical impedance principle.
8. according to heating of the described Jet forming machine of claim 7 and cooling system, the power supply that it is characterized by heater is that the direct current with high current low voltage makes heater moment produce high heat.
9. according to heating of the described Jet forming machine of claim 1 and cooling system, it is characterized by cooling fluid and further include cooling fluid and high velocity air, cooling fluid with the melten gel cooling and shaping after, the input high velocity air is discharged cooling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027021 CN101020355A (en) | 2007-02-27 | 2007-02-27 | Heating and cooling system for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027021 CN101020355A (en) | 2007-02-27 | 2007-02-27 | Heating and cooling system for injection molding machine |
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| Publication Number | Publication Date |
|---|---|
| CN101020355A true CN101020355A (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710027021 Pending CN101020355A (en) | 2007-02-27 | 2007-02-27 | Heating and cooling system for injection molding machine |
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| CN (1) | CN101020355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180119A (en) * | 2010-08-05 | 2013-06-26 | 福特全球技术公司 | Foamed resin injection molding apparatus and method |
| CN107984732A (en) * | 2017-12-05 | 2018-05-04 | 芜湖环瑞汽车内饰件有限公司 | A kind of automotive upholstery processes heating unit |
-
2007
- 2007-02-27 CN CN 200710027021 patent/CN101020355A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180119A (en) * | 2010-08-05 | 2013-06-26 | 福特全球技术公司 | Foamed resin injection molding apparatus and method |
| CN107984732A (en) * | 2017-12-05 | 2018-05-04 | 芜湖环瑞汽车内饰件有限公司 | A kind of automotive upholstery processes heating unit |
| CN107984732B (en) * | 2017-12-05 | 2020-01-07 | 芜湖环瑞汽车内饰件有限公司 | Automotive interior spare processing heating device |
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Open date: 20070822 |