CN103057088A - Strengthening method based on reverse eccentric double-thread grooves for tensile deformation effect and screw - Google Patents
Strengthening method based on reverse eccentric double-thread grooves for tensile deformation effect and screw Download PDFInfo
- Publication number
- CN103057088A CN103057088A CN2012105608160A CN201210560816A CN103057088A CN 103057088 A CN103057088 A CN 103057088A CN 2012105608160 A CN2012105608160 A CN 2012105608160A CN 201210560816 A CN201210560816 A CN 201210560816A CN 103057088 A CN103057088 A CN 103057088A
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- thread groove
- screw rod
- spiral shell
- shell rib
- tensile deformation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/64—Screws with two or more threads
- B29C48/65—Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a strengthening method based on reverse eccentric double-thread grooves for tensile deformation effect and a screw. A vice screw flight below a main screw flight being added into a single screw rod thread groove, the thread groove is distributed into the reverse eccentric double-thread grooves. When the screw rod is used for rotating, the depth of the double thread grooves changes from light to deep and again from deep to light in a 180 degrees phase difference periodic mode, so that the tensile deformation effect is strengthened during the plasticizing and transporting process of the materials. The screw rod to achieve the method is composed of the main screw flight, the vice screw flight and the reverse eccentric double-thread grooves. The main screw flight and the vice screw flight are arranged at intervals. Adjacent thread grooves are arranged in a symmetric eccentric mode opposite to the rotating axis. When the screw rod rotates, the material is plasticized and transported along with the change of the clearance between the thread groove and a cylinder so as to strengthen the tensile deformation effect. The strengthening method based on reverse eccentric double thread grooves for tensile deformation effect and a screw can achieve the efficient plasticizing and transporting of polymeric materials so as to achieve the effects of reducing energy consumption and degradation.
Description
Technical field
The present invention relates to the high polymer material plasticizing process and apparatus, specifically refer to tensile deformation effect intensifying method and the screw rod of a kind of processing of high molecular material based on the two thread grooves of reverse off-centre.
Technical background
Screw rod mechanism is the core that the present macromolecular material that generally adopts transports equipment, the axis Concentric rotation of the general and screw channel of spiral shell rib axis in the screw rod mechanism, material plasticizing transports main effect of dragging to material during by the screw rod rotation, Solid Conveying and Melting is the friction towing, melt Conveying is viscous drag, the velocity gradient of material is mobile vertical with deformation direction with it, and flowing arranged by shear stress with distortion.The mode of movement ubiquity plasticizing capacity of this common single screw rod is poor, and energy consumption is high, the defectives such as material bad adaptability.Therefore in screw rod mechanism, usually take the solid conveying section of barrel is slotted to increase with the frictional force of logistics, increases screw slenderness ratio, optimized the measures such as screw-rod structure and can address the above problem to a certain extent, but the heat engine tool course that these measures certainly will cause again material plasticizing to transport to be experienced lengthens, the device structure volume is large, the easy shortcoming such as degraded of material.
High molecular material blade plasticizing conveying equipment based on tensile deformation has solved the problems referred to above, the advantages such as can realize that heat engine tool course shortens greatly, plasticizing transports Energy Intensity Reduction, and transfer efficiency improves, material adaptability is extensive, but it is complicated that blade plasticizing conveying equipment part consists of, and mounting or dismounting are inconvenient.
Summary of the invention
The objective of the invention is the problem that exists in above technology and the equipment, provide a kind of tensile deformation effect intensifying method and screw rod based on the two thread grooves of reverse off-centre, to solve high, the problems such as device structure is complicated, material bad adaptability of energy consumption in the processing of high molecular material process.
Purpose of the present invention is achieved through the following technical solutions:
A kind of tensile deformation effect intensifying method based on the two thread grooves of reverse off-centre: during single screw rod rotation, be full of the material of reverse eccentric the first thread groove and the second thread groove, periodically change from small to big again from large to small with 180 degree phase differences and be fed forward with the gap of the first thread groove and the second thread groove and barrel, the tensile deformation effect of material in the plasticizing transport process is reinforced.
Screw rod is strengthened in a kind of tensile deformation effect based on the two thread grooves of reverse off-centre: single screw rod is provided with the main spiral shell rib of spiral, has additional secondary spiral shell rib in the spiral spacer of main spiral shell rib, and the diameter of secondary spiral shell rib is less than the diameter of main spiral shell rib; From the top of single screw rod, form the first thread groove between main spiral shell rib and the secondary spiral shell rib, and the second thread groove between secondary spiral shell rib and the main spiral shell rib; With respect to the rotation of single screw rod, the offset of the first thread groove and the second thread groove is identical and eccentric direction is opposite; Offset is greater than 0, poor less than the radius of the first thread groove and the second thread groove and barrel radius.
Poor less than the radius of the first thread groove and the second thread groove and barrel radius of offset preferably is greater than 1/5th of the difference of the radius of the first thread groove and the second thread groove and barrel radius.
Set up the secondary spiral shell rib that is lower than main spiral shell rib in the single screw flight groove of the present invention, thread groove is divided into reverse off-centre two thread grooves spaced apart, the adjacent thread groove is relative decentered distribution with respect to rotation, offset is identical and eccentric direction is opposite, and eccentric amount e is greater than 0 poor less than thread groove radius and barrel radius.During single screw rod rotation, the volume between two thread grooves and the barrel periodically changes from small to big from diminishing greatly with the phase difference of 180 degree again.The material of including two thread grooves in is carried by the friction towing of barrel and single screw rod not only, and simultaneously with plasticizing extruding in the volume-variation Tensile field of force between thread groove and barrel, material tensile deformation effect in the plasticizing transportation is strengthened.
With respect to prior art, the present invention has following advantage:
1, transport conveying equipment with traditional spiro rod plasticizing and compare, the heat engine tool field of force of plasticizing transport process shortens, and plasticizing transports Energy Intensity Reduction, good mixing effect.
2, compare with blade plasticizing conveying equipment, the tensile deformation effect that the present invention is based on the two thread grooves of reverse off-centre is strengthened the screw rod mounting or dismounting conveniently.
Description of drawings
Fig. 1 is a kind of structural representation of strengthening screw rod based on the tensile deformation effect of reverse eccentric thread groove;
Fig. 2 is for strengthening the structural representation that screw rod is applied to extrusion device based on the tensile deformation effect of the two thread grooves of reverse off-centre;
Fig. 3 is for strengthening the structural representation that screw rod is applied to injection moulding apparatus based on the tensile deformation effect of the two thread grooves of reverse off-centre.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further detailed, but the scope of protection of present invention is not limited to the scope of embodiment statement.
As shown in Figure 1, screw rod is strengthened in a kind of tensile deformation effect based on the two thread grooves of reverse off-centre, comprises single screw rod 8, and single screw rod 8 is provided with the main spiral shell rib 1 of spiral, have additional secondary spiral shell rib 2 in the spiral spacer of main spiral shell rib 1, the diameter of secondary spiral shell rib 2 is less than the diameter of main spiral shell rib 1; From the top of single screw rod 8, form the first thread groove 3 between main spiral shell rib 1 and the secondary spiral shell rib 2, and the second thread groove 4 between secondary spiral shell rib 2 and the main spiral shell rib 1; Oppositely eccentric with respect to rotation 5, the first thread grooves 3 of single screw rod 8 and the second thread groove 4, offset is identical and eccentric direction is opposite; Namely the axis 6 of the first thread groove 3 and the second thread groove 4 is positioned at the up and down two ends of the rotation 5 of single screw rod 8, and eccentric amount e is identical, and eccentric amount e is greater than 0 poor less than the radius of the first thread groove 3 and the second thread groove 4 and barrel 9 radiuses; Eccentric amount e is poor less than the radius of the first thread groove 3 and the second thread groove 4 and barrel 9 radiuses, greater than 1/5th of the difference of the radius of the first thread groove 3 and the second thread groove 4 and barrel 9 radiuses; During single screw rod 8 rotation, two thread grooves that the first thread groove 3 and the second thread groove 4 form and the volume between the barrel 9 periodically change from small to big from diminishing greatly with the phase difference of 180 degree again.
A kind of tensile deformation effect intensifying method based on the two thread grooves of reverse off-centre: during single screw rod 8 rotation, be full of the material of reverse eccentric the first thread groove 3 and the second thread groove 4, periodically change from small to big again from large to small with 180 degree phase differences with the gap of barrel 9 and be fed forward with the first thread groove 3 and the second thread groove 4, the tensile deformation effect of material in the plasticizing transport process is reinforced.
As shown in Figure 2, single screw extrusion machine comprises single screw rod 8, barrel 9 and hopper 7.Single screw rod 8 places in the barrel 9, and hopper 7 is connected by screw with barrel 9.Single screw rod 8 is provided with the main spiral shell rib 1 of spiral, has additional secondary spiral shell rib 2 in the spiral spacer of main spiral shell rib 1, and the diameter of secondary spiral shell rib 2 is less than the diameter of main spiral shell rib 1; From the top of single screw rod 8, form the first thread groove 3 between main spiral shell rib 1 and the secondary spiral shell rib 2, and the second thread groove 4 between secondary spiral shell rib 2 and the main spiral shell rib 1; Oppositely eccentric with respect to rotation 5, the first thread grooves 3 of single screw rod 8 and the second thread groove 4, offset is identical and eccentric direction is opposite; Eccentric amount e is greater than 0 poor less than the radius of the first thread groove 3 and the second thread groove 4 and barrel 9 radiuses; Eccentric amount e is poor less than the radius of the first thread groove 3 and the second thread groove 4 and barrel 9 radiuses, greater than 1/5th of the difference of the radius of the first thread groove 3 and the second thread groove 4 and barrel 9 radiuses; During single screw rod 8 rotation, two thread grooves that the first thread groove 3 and the second thread groove 4 form and the volume between the barrel 9 periodically change from small to big from diminishing greatly with the phase difference of 180 degree again.
During the single screw extrusion machine processing macro-molecular material, macromolecular material enters in the barrel 9 from hopper 7, and along with single screw rod 8 rotations, is full of the gap of whole single screw rod 8 and barrel 9, material is forced to carry to outlet under the effect of the thrust of main spiral shell rib 1 and secondary spiral shell rib 2 and barrel 9 inner surface frictional force.When single screw rod 8 rotates, be arranged in the material of the second thread groove 4, with the gap descending ascending variation of the second thread groove 4 with barrel 9, when material is subjected to single screw rod 8 with barrel 9 towing shearing deformation effect, also be subjected to the volume extrusion stretching deformation effect that is caused by spatial variations; And be arranged in the material of the first thread groove 3, equally with the variation of the first thread groove 3 with barrel 9 gaps, so that the suffered tensile deformation effect of material is strengthened.Macromolecule material is polished under the comprehensive function of the stretching field of force and shearing force field, compacting, exhaust, and under the booster action of barrel 9 external heats plastifying fusion, external tapping mold forming goods by connecting with barrel 9 after plasticizing is finished.
As shown in Figure 3, mainly by the single screw rod 5 with stretching invigoration effect, injection cylinder 4, injection barrel 2, nozzle 1, hopper 3, mold closing mechanism 6 parts such as grade form injection device.Hopper 3 charging end faces are fixedly connected with barrel 2, and injection cylinder 4 is fastenedly connected with the single screw rod 5 of injection, and single screw rod 5 places barrel 2 inner chambers.When only screw rod 5 rotates, the material that enters barrel 2 from hopper 3 is subjected to barrel 2 external heats, carried by plasticizing under shearing force field and the acting in conjunction of the enhanced drawing field of force with single screw rod 5 simultaneously, the melt that plasticizing is finished is stored within the measuring room of injection barrel 2 heads, shrink back under the pressure-acting of single screw rod 5 melt in measuring room simultaneously, after reaching goods in the storing amount of injection in the barrel 2 and requiring, single screw rod 5 stops plasticizing, discharge injection pressure by injection cylinder 4 and promote single screw rod 5 forward, material enters mold closing mechanism 6 cooling forming goods through nozzle 1, finish injection, enter simultaneously the next process-cycle.
It also is that single screw rod 5 is improved that macromolecular material list spiro rod plasticizing transportation tensile deformation effect strengthening device is applied to this injection device, single screw rod 5 is provided with the main spiral shell rib of spiral, have additional secondary spiral shell rib in the spiral spacer of main spiral shell rib, the diameter of secondary spiral shell rib is less than the diameter of main spiral shell rib; From the top of single screw rod 5, form the first thread groove between main spiral shell rib and the secondary spiral shell rib, and the second thread groove between secondary spiral shell rib and the main spiral shell rib; With respect to the rotation of single screw rod 5, the first thread groove and the second thread groove are oppositely eccentric, and offset is identical and eccentric direction is opposite; Namely the axis of the first thread groove and the second thread groove is positioned at the up and down two ends of the rotation of single screw rod, and offset is identical, and offset is greater than 0 poor less than the radius of the first thread groove and the second thread groove and barrel radius; Eccentric amount e is poor less than the radius of the first thread groove and the second thread groove and barrel radius, greater than 1/5th of the difference of the radius of the first thread groove and the second thread groove and barrel radius; During single screw rod 5 rotation, two thread grooves that the first thread groove and the second thread groove form and the volume between the barrel 2 periodically change from small to big from diminishing greatly with the phase difference of 180 degree again.
Claims (3)
1. tensile deformation effect intensifying method based on the two thread grooves of reverse off-centre, it is characterized in that: during single screw rod rotation, be full of the material of reverse eccentric the first thread groove and the second thread groove, periodically change from small to big again from large to small with 180 degree phase differences and be fed forward with the gap of the first thread groove and the second thread groove and barrel, the tensile deformation effect of material in the plasticizing transport process is reinforced.
2. screw rod is strengthened in the tensile deformation effect based on the two thread grooves of reverse off-centre that realizes the described method of claim 1, it is characterized in that: single screw rod is provided with the main spiral shell rib of spiral, have additional secondary spiral shell rib in the spiral spacer of main spiral shell rib, the diameter of secondary spiral shell rib is less than the diameter of main spiral shell rib; From the top of single screw rod, form the first thread groove between main spiral shell rib and the secondary spiral shell rib, and the second thread groove between secondary spiral shell rib and the main spiral shell rib; With respect to the rotation of single screw rod, the offset of the first thread groove and the second thread groove is identical and eccentric direction is opposite; Offset is greater than 0, poor less than the radius of the first thread groove and the second thread groove and barrel radius.
3. screw rod is strengthened in the tensile deformation effect based on the two thread grooves of reverse off-centre according to claim 2, it is characterized in that: offset is poor less than the radius of the first thread groove and the second thread groove and barrel radius, greater than 1/5th of the difference of the radius of the first thread groove and the second thread groove and barrel radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560816.0A CN103057088B (en) | 2012-12-20 | 2012-12-20 | Based on tensile deformation effect intensifying method and the screw rod of reverse eccentric two thread groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560816.0A CN103057088B (en) | 2012-12-20 | 2012-12-20 | Based on tensile deformation effect intensifying method and the screw rod of reverse eccentric two thread groove |
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| Publication Number | Publication Date |
|---|---|
| CN103057088A true CN103057088A (en) | 2013-04-24 |
| CN103057088B CN103057088B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210560816.0A Expired - Fee Related CN103057088B (en) | 2012-12-20 | 2012-12-20 | Based on tensile deformation effect intensifying method and the screw rod of reverse eccentric two thread groove |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106808667A (en) * | 2016-12-02 | 2017-06-09 | 湖北工业大学 | Shear plasticizing method in a kind of Wen Zhixiang alternations face |
| CN109249602A (en) * | 2018-10-16 | 2019-01-22 | 昆山兵仕机械有限公司 | A kind of extruder nature feeding mechanism |
| CN109666874A (en) * | 2018-12-28 | 2019-04-23 | 广州阿旺斯复合材料技术有限公司 | A kind of high-strength screw rod |
| CN111629874A (en) * | 2017-10-17 | 2020-09-04 | 巴斯股份公司 | Double-thread screw shaft for mixing kneader |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU923873A1 (en) * | 1980-04-07 | 1982-04-30 | Vnii Rezinotekh Mash | Extruder for processing plastic masses |
| CN201746735U (en) * | 2010-07-26 | 2011-02-16 | 广东金明精机股份有限公司 | Extruder of stone paper production equipment |
| CN203031917U (en) * | 2012-12-20 | 2013-07-03 | 华南理工大学 | Drawing deformation reinforcing screw based on reverse eccentric double-thread grooves |
-
2012
- 2012-12-20 CN CN201210560816.0A patent/CN103057088B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU923873A1 (en) * | 1980-04-07 | 1982-04-30 | Vnii Rezinotekh Mash | Extruder for processing plastic masses |
| CN201746735U (en) * | 2010-07-26 | 2011-02-16 | 广东金明精机股份有限公司 | Extruder of stone paper production equipment |
| CN203031917U (en) * | 2012-12-20 | 2013-07-03 | 华南理工大学 | Drawing deformation reinforcing screw based on reverse eccentric double-thread grooves |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106808667A (en) * | 2016-12-02 | 2017-06-09 | 湖北工业大学 | Shear plasticizing method in a kind of Wen Zhixiang alternations face |
| CN106808667B (en) * | 2016-12-02 | 2018-09-25 | 湖北工业大学 | Shear plasticizing method in a kind of Wen Zhixiang alternations face |
| CN111629874A (en) * | 2017-10-17 | 2020-09-04 | 巴斯股份公司 | Double-thread screw shaft for mixing kneader |
| CN111629874B (en) * | 2017-10-17 | 2022-11-18 | 巴斯股份公司 | Double-thread screw shaft for mixing kneader |
| US11504680B2 (en) | 2017-10-17 | 2022-11-22 | Buss Ag | Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or bioconvex outer peripheral surface in the top view |
| CN109249602A (en) * | 2018-10-16 | 2019-01-22 | 昆山兵仕机械有限公司 | A kind of extruder nature feeding mechanism |
| CN109666874A (en) * | 2018-12-28 | 2019-04-23 | 广州阿旺斯复合材料技术有限公司 | A kind of high-strength screw rod |
| CN109666874B (en) * | 2018-12-28 | 2020-06-09 | 广州阿旺斯复合材料技术有限公司 | High-strength screw |
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| CN103057088B (en) | 2016-01-20 |
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Granted publication date: 20160120 Termination date: 20211220 |