CN204566606U - A kind of exhaust injection machine exhaust structure - Google Patents
A kind of exhaust injection machine exhaust structure Download PDFInfo
- Publication number
- CN204566606U CN204566606U CN201520258198.3U CN201520258198U CN204566606U CN 204566606 U CN204566606 U CN 204566606U CN 201520258198 U CN201520258198 U CN 201520258198U CN 204566606 U CN204566606 U CN 204566606U
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- Prior art keywords
- barrel
- exhaust
- exhaust outlet
- valve pocket
- injection machine
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- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of exhaust injection machine exhaust structure, barrel is provided with exhaust outlet, exhaust outlet is trough type structure, a side relative with driving screw direction of rotation in the two sides that exhaust outlet is longer seamlessly transits in the inner cavity surface of barrel, and the outside of exhaust outlet is provided with gas operated device, is provided with valve pocket in gas operated device, valve pocket is communicated with barrel by an air guide duct, valve pocket is provided with spherical spool, and the opening part of valve pocket is provided with catch, is connected with coil tension spring between spherical spool and catch.Exhaust structure of the present utility model mates with the rotation status of driving screw, can be exhausted better; When material is spilled over to exhaust outlet, material can again fall to being back in barrel along seamlessly transitting side under the drive of screw rod, guarantees that exhaust outlet is not blocked, avoids causing pollution; Barrel and external environment condition distance, the structure of ball valve and coil tension spring constitutes check valve body structure, and isolation effect is good, and extraneous air is difficult to enter in barrel, and melt oxidative phenomena can not occur.
Description
Technical field
The utility model relates to injection machine technical field, is specifically related to be vented the exhaust structure in injection machine.
Background technology
Screw injection molding machine is the most widely used current a kind of injection molding machine product.Screw injection molding machine operationally, generally first granular or powdered plastic are joined in barrel, plastics are made to become molten condition by the rotation of barrel inner screw and the heating of barrel, then plastics forward is ordered about by the rotation of screw rod, plastics are penetrated from nozzle with very high pressure and speed, being injected in close die, is required moulded plastic products through pressurize, cooling Post RDBMS.
Need to carry out drying to raw material before part screw injection molding machine is reinforced, to reduce the moisture in raw material, this injection machine needs to arrange drying machine or dehumidifier, causes cost to increase, production environment is impacted, and raw material material property less stable after overbaking dehumidification treatments.Part screw injection molding machine arranges exhaust outlet on barrel, but the phenomenon that exhaust outlet is blocked often appears in current this injection machine, and effect on moisture extraction is difficult to be guaranteed.Because dehumidifying degassing effect is poor, the product quality of therefore current injection machine is difficult to improve.
In order to overcome above problem, there is vented injection machine on the market now.This injection machine does not need to carry out drying individually again, and by the scavenging action of plasticizing apparatus, quality of item is fine.The material injecting out to sky after not having dry PMMA to plastify on common injection machine, the inside is full of the minute bubbles of white; The air pocket that some escaping gases produce still is had in dried PMMA injecting products; And not having the quality of PMMA material directly through the injection moulding of vented injection machine through super-dry good, material is transparent, and the inside is bubbles or else.
Vented injection machine is provided with reciprocating vented screw, the course of work of material in exhaust screw is: gas expansion → bubbles burst in plastics melting, compression → melt decompression → melt and with melt separation → exhaust, exhaust after material carry out shearing homogenizing once again.Exhaust is realized by the exhaust outlet be located on barrel, traditional exhaust outlet is located on barrel by the mode of boring, after melt easily enters into exhaust outlet, melt can accumulate in exhaust ports to be difficult to fall after rise in barrel, thus exhaust outlet is blocked, in addition, the melt in barrel and external environment condition are easy to contact, extraneous air easily enters in barrel, causes the generation of melt oxidative phenomena.
Summary of the invention
In order to solve above technical problem, the utility model provides a kind of exhaust injection machine exhaust structure, and material can not gather in exhaust ports, guarantees that exhaust outlet keeps unimpeded always, and the melt simultaneously in barrel also can avoid oxidation.
The utility model is achieved through the following technical solutions:
A kind of exhaust injection machine exhaust structure, comprise barrel, the driving screw be connected in series successively is provided with in barrel, sub-screw and screw head, driving screw is provided with feeding section from top successively to end, compression section, releasing section and transition, the position of the corresponding releasing section of barrel is provided with exhaust outlet, described exhaust outlet is and barrel central axis direction trough type structure in the same way, a side relative with driving screw direction of rotation in the two sides that exhaust outlet is longer seamlessly transits in the inner cavity surface of barrel, the outside of described exhaust outlet is provided with the gas operated device be fixed on barrel, valve pocket is provided with in gas operated device, valve pocket is communicated with barrel by an air guide duct, valve pocket is provided with spherical spool, the opening part of valve pocket is provided with catch, coil tension spring is connected with between spherical spool and catch, spherical spool is pressed in air guide duct place under the tension force of coil tension spring.
As preferred embodiment, the described exhaust outlet side seamlessly transitted to barrel inner cavity surface be centered by the axle center of barrel, radius increases gradually and transits to the curved surface of barrel outer surface.
As preferred embodiment, described spherical spool is hollow sphere.
As preferred embodiment, described gas operated device and barrel are formed in one structure.
As preferred embodiment, described air guide duct is the curved structure in right angle.
As preferred embodiment, the opening part of described valve pocket is provided with removable capping.
The beneficial effects of the utility model are: exhaust outlet of the present utility model adopts trough type structure, and this structure is mated with the rotation status of driving screw, can be exhausted better; The side of exhaust outlet seamlessly transits in the inner cavity surface of barrel, when material is spilled over to exhaust outlet, under the turning effort of screw rod, these materials can again fall to being back in barrel along seamlessly transitting side under the drive of screw rod, guarantee that exhaust outlet is not blocked, avoid causing pollution; The structure of barrel and external environment condition distance, particularly ball valve and coil tension spring constitutes check valve body structure, and isolation effect is good, and extraneous air is difficult to enter in barrel, and melt oxidative phenomena can not occur.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of embodiment of the utility model.
Symbol description: 1-barrel, 2-screw rod assembly, 3-exhaust outlet, 4-gas operated device, 5-valve pocket, 6-air guide duct, the spherical spool of 7-, 8-catch, 9-coil tension spring.
Detailed description of the invention
With reference to the accompanying drawings and the utility model will be further described in conjunction with the embodiments.
The utility model is applied on exhaust injection machine, is applied to more specifically on the barrel of exhaust injection machine.
Barrel 1 entirety in Fig. 1 is long tubular, and its inside is provided with screw rod assembly 2, and screw rod assembly comprises driving screw, sub-screw and screw head.Driving screw is provided with feeding section, compression section, releasing section and transition successively from top to end.The position of the corresponding releasing section of barrel 1 is provided with exhaust outlet 3.During work, raw material enters in barrel, and under the rotary compression effect of screw rod assembly, raw material can become the melt of molten.Melt can be followed screw rod assembly and be pushed ahead, and ejects after the steps such as exhaust, further compression.
Exhaust outlet entirety of the present utility model is and barrel 1 central axis direction trough type structure in the same way that this structure is different from traditional circular hole structure.The barrel form fit of trough type exhaust outlet and long tubular, can more effectively discharge gas when perforate size is constant.Especially, a side relative with driving screw direction of rotation in the two sides that exhaust outlet of the present utility model is longer seamlessly transits in the inner cavity surface of barrel 1, during work, when melt is spilled over to exhaust outlet, this part material again can fall back in barrel along this side under the effect that rotarily drives of screw rod, guarantee that exhaust outlet can not gather melt, thus ensure that exhaust outlet is not blocked.In addition, the shorter two sides of exhaust outlet 3 are arc-shaped curved surface, and this structure can avoid melt to gather better, are easy to cleaning.
In the present embodiment, exhaust outlet 3 seamlessly transit the side to barrel inner cavity surface be centered by the axle center of barrel, radius increases gradually and transits to the curved surface of barrel outer surface.This embodiment has better improvement effect, and melt can not overflow from exhaust outlet substantially.
As shown in the figure, the outside of exhaust outlet 3 is provided with the gas operated device 4 be fixed on barrel 1, valve pocket 5 is provided with in gas operated device 4, valve pocket 5 is communicated with barrel 1 by an air guide duct 6, valve pocket 5 is provided with spherical spool 7, the opening part of valve pocket 5 is provided with catch 8, is connected with coil tension spring 9 between spherical spool 7 and catch 8.Spherical spool 7 is pressed in air guide duct 6 place under the tension force of coil tension spring 9.During concrete enforcement, spherical spool 7 generally adopts hollow sphere to realize, and coil tension spring 9 then generally selects the spring of weak separation, has less operting differential pressure, guarantee that spherical spool 7 can back down by the gas of barrel inside during work with the check valve making both be formed.Usually, the non-return valve operational pressure reduction that spherical spool 7 and coil tension spring 9 are set up needs at about 3.3kPa, otherwise unfavorable to exhaust.
In the specific implementation, gas operated device 4 can be absolute construction, adopts the mode of installing to be fixed on barrel 1, also can be one-body molded with barrel 1, and the latter's structure is compacter, air guide better effects if.
In order to reach better protection effect, air guide duct 6 is preferably designed for the curved structure in right angle, and this structure can avoid external dust to enter in barrel, guarantees that inner melt is not contaminated.In addition, the opening part of valve pocket can install removable capping further, and this is sealed on the opening sealing of valve pocket when injection machine does not use, and plays more perfect dust-proof effect.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. an exhaust injection machine exhaust structure, comprise barrel, the driving screw be connected in series successively is provided with in barrel, sub-screw and screw head, driving screw is provided with feeding section from top successively to end, compression section, releasing section and transition, the position of the corresponding releasing section of barrel is provided with exhaust outlet, it is characterized in that: described exhaust outlet is and barrel central axis direction trough type structure in the same way, a side relative with driving screw direction of rotation in the two sides that exhaust outlet is longer seamlessly transits in the inner cavity surface of barrel, the outside of described exhaust outlet is provided with the gas operated device be fixed on barrel, valve pocket is provided with in gas operated device, valve pocket is communicated with barrel by an air guide duct, valve pocket is provided with spherical spool, the opening part of valve pocket is provided with catch, coil tension spring is connected with between spherical spool and catch, spherical spool is pressed in air guide duct place under the tension force of coil tension spring.
2. one exhaust injection machine exhaust structure according to claim 1, is characterized in that: the described exhaust outlet side seamlessly transitted to barrel inner cavity surface be centered by the axle center of barrel, radius increases gradually and transits to the curved surface of barrel outer surface.
3. one exhaust injection machine exhaust structure according to claim 1, is characterized in that: described spherical spool is hollow sphere.
4. one exhaust injection machine exhaust structure according to claim 1, is characterized in that: described gas operated device and barrel are formed in one structure.
5. one exhaust injection machine exhaust structure according to claim 1, is characterized in that: described air guide duct is the curved structure in right angle.
6. one exhaust injection machine exhaust structure according to claim 1, is characterized in that: the opening part of described valve pocket is provided with removable capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258198.3U CN204566606U (en) | 2015-04-24 | 2015-04-24 | A kind of exhaust injection machine exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258198.3U CN204566606U (en) | 2015-04-24 | 2015-04-24 | A kind of exhaust injection machine exhaust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204566606U true CN204566606U (en) | 2015-08-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520258198.3U Expired - Fee Related CN204566606U (en) | 2015-04-24 | 2015-04-24 | A kind of exhaust injection machine exhaust structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204566606U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034389A (en) * | 2015-09-06 | 2015-11-11 | 成都思维智造科技有限公司 | Spray head structure of large 3D printer |
| CN105034383A (en) * | 2015-09-06 | 2015-11-11 | 成都思维智造科技有限公司 | Environment-friendly 3D printer nozzle structure |
| CN108247007A (en) * | 2018-01-24 | 2018-07-06 | 重庆百吉四兴压铸有限公司 | Chain gear chamber cover processing technology |
| CN110978393A (en) * | 2019-12-17 | 2020-04-10 | 徐福全 | Injection mold for injection molding machine |
| CN115316336A (en) * | 2022-08-18 | 2022-11-11 | 许扣宝 | Aquaculture oxygen supply device |
-
2015
- 2015-04-24 CN CN201520258198.3U patent/CN204566606U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034389A (en) * | 2015-09-06 | 2015-11-11 | 成都思维智造科技有限公司 | Spray head structure of large 3D printer |
| CN105034383A (en) * | 2015-09-06 | 2015-11-11 | 成都思维智造科技有限公司 | Environment-friendly 3D printer nozzle structure |
| CN108247007A (en) * | 2018-01-24 | 2018-07-06 | 重庆百吉四兴压铸有限公司 | Chain gear chamber cover processing technology |
| CN110978393A (en) * | 2019-12-17 | 2020-04-10 | 徐福全 | Injection mold for injection molding machine |
| CN115316336A (en) * | 2022-08-18 | 2022-11-11 | 许扣宝 | Aquaculture oxygen supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190722 Address after: 316000. B, No. 4, No. two, Lingang Road, Shuangqiao street, Dinghai District, Zhejiang, Zhoushan Patentee after: ZHEJIANG ZHOUSHAN HUAYI MACHINERY MANUFACTURING Co.,Ltd. Address before: 241000 No. 97 Changjiang South Road, Yijiang hi tech Industrial Development Zone, Wuhu, Anhui Patentee before: WUHU MISI MACHINERY TECHNOLOGY CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 |