CN204566601U - A kind of exhaust injection machine not overflow screw rod - Google Patents

A kind of exhaust injection machine not overflow screw rod Download PDF

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Publication number
CN204566601U
CN204566601U CN201520258762.1U CN201520258762U CN204566601U CN 204566601 U CN204566601 U CN 204566601U CN 201520258762 U CN201520258762 U CN 201520258762U CN 204566601 U CN204566601 U CN 204566601U
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Prior art keywords
section
metering section
exhaust
level
order
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CN201520258762.1U
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Chinese (zh)
Inventor
何宏雷
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ZHEJING ZHOUSHAN HUAYI MACHINERY MANUFACTURING CO., LTD.
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Meath Wuhu Machinery Science And Technology Ltd
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Abstract

The utility model discloses a kind of exhaust injection machine not overflow screw rod, described screw rod is located in barrel and is rotated, screw rod is provided with feed section, first order compression section, first order metering section, decompression exhaust section, compression section, the second level and second level metering section successively from top to end, the position of the corresponding decompression exhaust section of barrel is provided with exhaust outlet, the spiral groove depth of described second level metering section is greater than the spiral groove depth of first order metering section, and the helical angle of second level metering section is less than the helical angle of first order metering section.The melt conveying capacity of the second level of the present utility model metering section is greater than the melt conveying capacity of first order metering section, and during work, melt can pass through more quickly exhaust outlet, substantially avoided the generation of overflow phenomenon; When carrying out interval injection moulding, during injection, the melt of reflux can remain in the screw channel of second level metering section, can not reflux in decompression exhaust section, namely can not overflow exhaust ports, effectively avoid exhaust outlet blocked and pollute.

Description

A kind of exhaust injection machine not overflow screw rod
Technical field
The utility model relates to injection machine technical field, is specifically related to be vented the screw-rod 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.Be vented and realized by the exhaust outlet be located on barrel, exhaust outlet is generally directly opened on the sidewall of barrel.Due to the existence of exhaust outlet, barrel is no longer closed structure.During work, in barrel, melt is to the feeding of injection moulding discharging opening under the impetus of screw rod, and when melt there will be overflow phenomenon through exhaust outlet, namely melt is spilled over to exhaust ports, affects the normal exhaust function of exhaust outlet and pollutes.Particularly being vented injection machine work is interval, and when melt preformed enters the injection punch die stage, screw rod is under the effect of injection pressure, and melt can along screw channel reflux, and melt is more prone to overflow from exhaust outlet.Traditional injection machine is difficult to overcome the above problems, and needs to improve.
Summary of the invention
In order to solve above technical problem, the utility model provides a kind of exhaust injection machine not overflow screw-rod structure, effectively prevents the generation of overflow phenomenon.
The utility model is achieved through the following technical solutions:
A kind of exhaust injection machine not overflow screw rod, described screw rod is located in barrel and is rotated, screw rod is provided with feed section, first order compression section, first order metering section, decompression exhaust section, compression section, the second level and second level metering section successively from top to end, the position of the corresponding decompression exhaust section of barrel is provided with exhaust outlet, the spiral groove depth of described second level metering section is greater than the spiral groove depth of first order metering section, and the helical angle of second level metering section is less than the helical angle of first order metering section.
Described screw rod is connected in series by driving screw and sub-screw and forms, and feed section, first order compression section, first order metering section, decompression exhaust section and compression section, the second level are located on driving screw, and second level metering section is located on sub-screw.
The beneficial effects of the utility model are: the utility model has carried out particular design to the spiral groove depth of first order metering section and second level metering section and helical angle, the melt conveying capacity of second level metering section is made to be greater than the melt conveying capacity of first order metering section, during work, melt can pass through more quickly exhaust outlet, substantially avoided the generation of overflow phenomenon; When carrying out interval injection moulding, during injection, the melt of reflux can remain in the screw channel of second level metering section, can not reflux in decompression exhaust section, namely can not overflow exhaust ports, effectively avoid exhaust outlet blocked and pollute.
Accompanying drawing explanation
Fig. 1 is the structure chart that the utility model is applied to a kind of embodiment of barrel.
Symbol description: 1-barrel, 2-screw rod, 3-exhaust outlet, I-feed section, II-first order compression section, III-first order metering section, IV-decompression exhaust section, compression section, the V-second level, VI-second level metering section.
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 screw rod 2 is located in barrel 1, the shape of screw rod 2 and barrel 1 form fit.
As shown in the figure, screw rod 2 is provided with feed section I, first order compression section II, first order metering section III, decompression exhaust section IV, compression section, second level V and second level metering section VI successively from top to end.Wherein the position of the corresponding feed section I of barrel 1 is provided with inlet, and material enters in barrel 1 by inlet, is fed forward under the effect of feed section I.First order compression section II is used for compressing the raw material entered and plastifying, and obtains melt.First order metering section III carries out homogenizing to melt, measure and builds pressure.Decompression exhaust section IV is decompression phase, and melting material pressure discharges suddenly, and the gas now in melt can be overflowed by broken bubble, de-aeration, and barrel this position corresponding is provided with exhaust outlet 3, and the gas overflowed in melt is discharged by exhaust outlet 3.Compression section, second level V carries out second time to melt and compresses plasticizing, sets up high pressure.Second level metering section VI is delivered to screw head after carrying out homogenizing, metering and continuation pressurization to melt, outwards injects.
The spiral groove depth of the utility model second level metering section VI is greater than the spiral groove depth of first order metering section III, and the helical angle of second level metering section VI is less than the helical angle of first order metering section III.This design makes the melt conveying capacity of second level metering section be greater than the melt conveying capacity of first order metering section, and during work, melt can pass through more quickly exhaust outlet, substantially avoided the generation of overflow phenomenon; When carrying out interval injection moulding, during injection, the melt of reflux can remain in the screw channel of second level metering section, can not reflux in decompression exhaust section, namely can not overflow exhaust ports, effectively avoid exhaust outlet blocked and pollute.
In general embodiment, screw rod 1 is generally connected in series by driving screw and sub-screw and forms, feed section I, first order compression section II, first order metering section III, decompression exhaust section IV and compression section, second level V are located on driving screw, and second level metering section VI is located on sub-screw.
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 (2)

1. an exhaust injection machine not overflow screw rod, described screw rod is located in barrel and is rotated, it is characterized in that: screw rod is provided with feed section, first order compression section, first order metering section, decompression exhaust section, compression section, the second level and second level metering section successively from top to end, the position of the corresponding decompression exhaust section of barrel is provided with exhaust outlet, the spiral groove depth of described second level metering section is greater than the spiral groove depth of first order metering section, and the helical angle of second level metering section is less than the helical angle of first order metering section.
2. one exhaust injection machine not overflow screw rod according to claim 1, it is characterized in that: described screw rod is connected in series by driving screw and sub-screw and forms, feed section, first order compression section, first order metering section, decompression exhaust section and compression section, the second level are located on driving screw, and second level metering section is located on sub-screw.
CN201520258762.1U 2015-04-24 2015-04-24 A kind of exhaust injection machine not overflow screw rod Active CN204566601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520258762.1U CN204566601U (en) 2015-04-24 2015-04-24 A kind of exhaust injection machine not overflow screw rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520258762.1U CN204566601U (en) 2015-04-24 2015-04-24 A kind of exhaust injection machine not overflow screw rod

Publications (1)

Publication Number Publication Date
CN204566601U true CN204566601U (en) 2015-08-19

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CN201520258762.1U Active CN204566601U (en) 2015-04-24 2015-04-24 A kind of exhaust injection machine not overflow screw rod

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107116765A (en) * 2017-05-20 2017-09-01 宁波优诺姆机械有限公司 A kind of barrel vented injection machine
CN109049398A (en) * 2018-07-23 2018-12-21 合肥市丽红塑胶材料有限公司 A kind of novel plastic VOC removing means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107116765A (en) * 2017-05-20 2017-09-01 宁波优诺姆机械有限公司 A kind of barrel vented injection machine
CN109049398A (en) * 2018-07-23 2018-12-21 合肥市丽红塑胶材料有限公司 A kind of novel plastic VOC removing means

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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

Effective date of registration: 20190627

Address after: 316000 Block B, No. 4, Lingang No. 2 Road, Shuangqiao Street, Dinghai District, Zhoushan City, Zhejiang Province

Patentee after: ZHEJING ZHOUSHAN HUAYI MACHINERY MANUFACTURING CO., LTD.

Address before: 241000 No. 97 Changjiang South Road, Yijiang District High-tech Industrial Development Zone, Wuhu City, Anhui Province

Patentee before: Meath, Wuhu machinery Science and Technology Ltd.

TR01 Transfer of patent right