CN102975350A - Extruder screw with phase separation function - Google Patents
Extruder screw with phase separation function Download PDFInfo
- Publication number
- CN102975350A CN102975350A CN2012105493044A CN201210549304A CN102975350A CN 102975350 A CN102975350 A CN 102975350A CN 2012105493044 A CN2012105493044 A CN 2012105493044A CN 201210549304 A CN201210549304 A CN 201210549304A CN 102975350 A CN102975350 A CN 102975350A
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- China
- Prior art keywords
- screw
- thread
- screw rod
- extruder screw
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
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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
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
-
- 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)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to the technical field of a plastic extruder screw, and particularly relates to an extruder screw with a phase separation function. The extruder screw comprises a screw body with a thread; a cavity extends inward the material extruding end of the screw body; a through hole connected with the cavity is formed in a screw; the thread comprises a main thread and a secondary thread; the secondary thread is slightly lower than the main thread in radial height; a main thread slot and a secondary thread slot are alternatively formed between the main thread and the secondary thread; and the through hole is formed in the part, corresponding to the cavity, inside the secondary thread groove. As the extruder screw adopts the structure, a solid phase and a melt phase can be subjected to phase separation by the cavity, so that fusion crushing possibility and fisheye crystal points can be greatly reduced; and the extruder screw is applicable to low-temperature efficient plastic extrusion.
Description
Technical field
The present invention relates to macromolecule material extruder technology field, be specifically related to the screw rod of extruder.
Background technology
Macromolecule material plastifies into uniform melt by the heating extrusion system of extruder, and under the pressure-acting of setting up in this course, material is by screw rod continuous extruder head.Screw rod is one of critical component of plastic extrusion machine host extrusion system, it not only plays convey materials, simultaneously the difficulty or ease of the extruding of material, plasticizing, moulding also played an important role, so reasonable selection screw-rod structure and parameter are to obtain desirable product quality and the important step of output.
Because traditional extruder screw is not established hollow structure, thereby in the extruder course of work, solid-phase and melt move to discharging opening in screw channel, solid-phase is fewer and feweri, and melt is more and more, in such process, need the solid-phase of heating owing to wrapped up the technical problem that causes heating effect relatively poor by melt, and the melt that has not needed to heat is constantly being heated, and so just causes easily the overheated phenomenon of melt, forms the broken and brilliant point of flake of melting.
Summary of the invention
The purpose of this invention is to provide a kind of extruder screw with the function of being separated.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: the extruder screw of the function that is separated, comprise screwed screw rod body, the material extruding end of the described screw rod body cavity that extended internally, described screw rod is provided with the through hole that links to each other with described cavity, described screw thread comprises main thread and deputy thread, the radial height of described deputy thread is a little less than the radial height of described main thread, the main screw channel of the alternate formation with described deputy thread of described main thread and time screw channel, the position corresponding with described cavity is provided with described through hole in described the screw channel.
Further, described screw rod body is provided with the bearings cell body near the position of material extruding end.
Further, the helical angle of described main thread equates with the helical angle of described deputy thread.
Further, described deputy thread begins to extend to described material extruding end from the compression section of described screw rod.
Further, the helical angle of described main thread is 9 °～12 ° at the feeding section of described screw rod.
Further, the helical angle of the helical angle of described main thread and described deputy thread is 35 °～40 °.
Further, the degree of depth of described main screw channel is changed to the material extruding end from deep to shallow by the feeding section of described screw rod.
Further, the axial width of described main screw channel is changed to the material extruding end from long to short by the feeding section of described screw rod.
Further, the degree of depth of the close described main thread position of described main screw channel is greater than the degree of depth of described main screw channel near described deputy thread position.
Further, described main screw channel changes from deep to shallow along the degree of depth at described deputy thread place.
Further, the tapered cavity of described cavity, its vertex of a cone is inside, and the cone end, is inside.
Further, described cavity is cylinder or prism.
The present invention has following beneficial effect: the extruder screw of the function that is separated of the present invention, comprise screwed screw rod body, material extruding end at the screw rod body is extended with cavity to inside screw, be provided with main thread and deputy thread at the screw rod body, the structure of main screw channel and time screw channel and through hole, the effect of main thread is convey materials, prevent that material from flowing backwards, the radial height of deputy thread is a little less than the radial height of described main thread, deputy thread can stop the material of solid-phase to flow in time screw channel, allow the material of melt to flow in time screw channel, the melt via through holes flows in the screw cavity, thereby realizes separating of solid-phase and melt.The screw rod body is provided with the bearings cell body near the position of material extruding end, can between screw rod and barrel, bearing be installed, power intake by bearing and screw rod supports screw rod, changed the design of by screw flight and material tube inner wall screw rod being supported in the prior art, reduce the wearing and tearing to barrel, also reduced the power output of motor simultaneously.Adopt in addition the extruder screw with the function of being separated of the present invention, also have the beneficial effect of increasing work efficiency with quality of material, reduction energy consumption.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is the structural representation of the embodiment of the invention two.
Fig. 3 is the structural representation of the embodiment of the invention three.
Fig. 4 is the structural representation of the embodiment of the invention four.
Fig. 5 is the structural representation of the embodiment of the invention five.
Fig. 6 is the structural representation of the embodiment of the invention six.
Fig. 7 is the structural representation of the embodiment of the invention seven.
Fig. 8 is the structural representation of the embodiment of the invention eight.
Fig. 9 is the structural representation of the embodiment of the invention nine.
Figure 10 is the structural representation of the embodiment of the invention ten.
Figure 11 is the structural representation of the embodiment of the invention 11.
Figure 12 is the structural representation of the embodiment of the invention 12.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Embodiment one, as shown in Figure 1, the extruder screw of the function that is separated of the present invention, comprise screwed screw rod body 1, the material extruding end 1-1 of described screw rod body 1 cavity 2 that extended internally, described screw rod is provided with the through hole 3 that links to each other with described cavity 2, described screw thread comprises main thread 4 and deputy thread 5, the radial height of described deputy thread 5 is a little less than the radial height of described main thread 4,7 positions corresponding with described cavity 2 are provided with described through hole 3 in the described main thread 4 and the main screw channel 6 of described deputy thread 5 alternate formation and time screw channel 7, described screw channel.In the present embodiment, adopt said structure, main thread 4 matches with the barrel of extruder, and material is had the conveying effect, also can avoid material to flow backwards simultaneously.Deputy thread 5 can allow the material of melting flow in time screw channel 7, also can stop solid-phase material to flow in time screw channel 7 simultaneously.Material via through holes 3 through being heated to the melting phase is separated in the cavity of screw rod, causes the material operation in the main screw channel unobstructed, significantly improves operating efficiency; Because the macromolecule material of melting phase is separated in the cavity of screw rod, also can avoid the macromolecule material of melting to produce superheating phenomenon, significantly improve product quality; The solid phase macromolecule material in time separates with melting phase macromolecule material, is conducive to the abundant heat absorption melting of solid-phase material, is conducive to improve heat utilization rate, has and falls the effect that can subtract consumption.
Embodiment two, as shown in Figure 2, described screw rod body 1 is provided with bearings cell body 8 near the position of material extruding end 1-1, wherein, bearing support slot body is used for bearing is installed, and bearing case and barrel suit, so that main thread contacts with barrel is little, by the power intake studdle of bearing and the screw rod other end, change existing design by screw flight and material tube inner wall studdle, prolong the service life of barrel and screw rod.Screw rod of the prior art is not owing to there is cavity, material can only be extruded by the surface of screw rod body, therefore can not be designed with the structure of bearings at the material extruding end of screw rod, otherwise just stop the outflow of fused materials, and fused materials of the present invention flows out by the screw rod inner chamber, so the bearing supporting screw can be installed.Because screw rod is by the jockey studdle of bearing and screw rod power intake, so that the screw thread on the screw rod and the frictional resistance between the material tube inner wall significantly reduce, thereby prolonged the service life of screw rod and barrel, also significantly reduced the input power of motor, saved the energy.
Wherein, the material output of screw rod and the bearing between the barrel can adopt self-aligning ball bearing, cylinder roller bearing, self-aligning roller bearing, needle bearing, taper roll bearing.
Embodiment three, and as shown in Figure 3, the helical angle R1 of described main thread 4 equates with the helical angle R2 of described deputy thread 5, in the present embodiment, adopts this scheme, makes things convenient for the screw rod production and processing.Need to prove, helical angle be the incline direction of screw thread and screw rod body radially between angle.
Embodiment four, as shown in Figure 4, described deputy thread 5 begins to extend to described material extruding end 1-1 from the compression section A of described screw rod, because the effect of deputy thread is to stop the solid phase macromolecule material to enter in time screw channel, in the present embodiment, adopt this scheme, allow the macromolecule material of melting phase to enter in time screw channel.
Embodiment five, and as shown in Figure 5, the helical angle R3 of described main thread 4 is 9 °～12 ° at the feeding section B of described screw rod, and in the present embodiment, at feeding section, the helical angle of main thread is 9 °～12 °, can increase the volume of main screw channel, improve reinforced efficient.Helical angle at feeding section is less, also can play the compaction to material.
Embodiment six, and as shown in Figure 6, the helical angle R5 of the helical angle R4 of described main thread 4 and described deputy thread 5 is 35 °～40 °, in the present embodiment, adopt this scheme, the material that is conducive to the melting phase passes through deputy thread, enter time screw channel, then via through holes enters in the cavity of screw rod.
Embodiment seven, as shown in Figure 7, the degree of depth of described main screw channel 6 is changed to material extruding end 1-1 from deep to shallow by the feeding section B of described screw rod, in the present embodiment, the main spiral groove depth W1 of feeding section B is greater than the main spiral groove depth W2 near bearings cell body 8 places, the melting because the macromolecule material of close barrel part absorbs heat first, after the melting phase materials separates, material in the main screw channel is fewer and feweri, the variation from deep to shallow of the degree of depth of main screw channel, be conducive to solid-phase material further near barrel, the heat absorption melting also is conducive to the effect that the melting phase materials separates simultaneously.
Embodiment eight, as shown in Figure 8, the axial width of described main screw channel 6 is changed to material extruding end 1-1 from long to short by the feeding section B of described screw rod, in the present embodiment, the main screw channel axial width L1 of feeding section B is greater than the main screw channel axial width L2 near bearings cell body 8 places, take this structure can allow the macromolecule material of solid phase close to the barrel position, be conducive to separating of solid-phase material heat absorption melting and melting phase materials.
Embodiment nine, and as shown in Figure 9, the degree of depth of described main screw channel 6 close described main thread 4 positions is greater than the degree of depth of described main screw channel 6 near described deputy thread 5 positions, in the present embodiment, take this structure, can form the slope in the master of the unit of the allowing screw channel, the material of melting phase is convenient to flow in time screw channel.
Embodiment ten, as shown in figure 10, described main screw channel 6 changes from deep to shallow along the degree of depth at described deputy thread 5 places, be compression section A master's screw channel along the degree of depth W3 of deputy thread place greater than near bearings cell body 8 master of place spiral groove depth W4, in the present embodiment, adopt this scheme, the material of being convenient to the melting phase is crossed deputy thread, flow in time screw channel, in time the material of fractional melting phase.
Embodiment 11, as shown in figure 11, described cavity 2 tapered cavitys, 2-1 is inside for its vertex of a cone, and end 2-2 is outside for cone, in the present embodiment, adopts this scheme, and its cone-shaped cavity makes things convenient for melting phase macromolecule material to flow out.
Embodiment 12, and as shown in figure 12, described cavity 2 is cylinder or prism, in the present embodiment, adopts this scheme, at first are convenient to the stable outflow of melting phase macromolecule material, are convenient in addition the processing of cavity.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (12)
1. the extruder screw of the function that is separated, comprise screwed screw rod body (1), the material extruding end (1-1) of described screw rod body (1) cavity (2) that extended internally, described screw rod is provided with the through hole (3) that links to each other with described cavity (2), it is characterized in that, described screw thread comprises main thread (4) and deputy thread (5), the radial height of described deputy thread (5) is a little less than the radial height of described main thread (4), described main thread (4) and the main screw channel of the alternate formation of described deputy thread (5) (6) and time screw channel (7), (7) position corresponding with described cavity (2) is provided with described through hole (3) in described the screw channel.
2. the extruder screw of the described function that is separated according to claim 1 is characterized in that, described screw rod body (1) is provided with bearings cell body (8) near the position of material extruding end (1-1).
3. the extruder screw of the described function that is separated according to claim 1 and 2 is characterized in that the helical angle of described main thread (4) equates with the helical angle of described deputy thread (5).
4. the extruder screw of the described function that is separated according to claim 1 and 2 is characterized in that, described deputy thread (5) extends to described material extruding end (1-1) from compression section (A) beginning of described screw rod.
5. the extruder screw of the described function that is separated according to claim 1 and 2 is characterized in that the helical angle of described main thread (4) is 9 °～12 ° at the feeding section (B) of described screw rod.
6. the extruder screw of the described function that is separated according to claim 3 is characterized in that the helical angle of the helical angle of described main thread (4) and described deputy thread (5) is 35 °～40 °.
7. the extruder screw of the described function that is separated according to claim 1 and 2 is characterized in that the degree of depth of described main screw channel (6) is changed to material extruding end (1-1) from deep to shallow by the feeding section (B) of described screw rod.
8. the extruder screw of the described function that is separated according to claim 1 and 2 is characterized in that the axial width of described main screw channel (6) is changed to material extruding end (1-1) from long to short by the feeding section (B) of described screw rod.
9. the extruder screw of the described function that is separated according to claim 1 is characterized in that, described main screw channel (6) near the degree of depth of described main thread (4) position greater than the degree of depth of described main screw channel (6) near described deputy thread (5) position.
10. the extruder screw of the described function that is separated according to claim 1 and 2 is characterized in that the degree of depth that described main screw channel (6) is located along described deputy thread (5) changes from deep to shallow.
11. the extruder screw of the described function that is separated is characterized in that according to claim 1 and 2, the tapered cavity of described cavity (2), and its vertex of a cone (2-1) is inside, and the cone end (2-2) is outside.
12. the extruder screw of the described function that is separated is characterized in that according to claim 1 and 2, described cavity (2) is cylinder or prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105493044A CN102975350A (en) | 2012-12-18 | 2012-12-18 | Extruder screw with phase separation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105493044A CN102975350A (en) | 2012-12-18 | 2012-12-18 | Extruder screw with phase separation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102975350A true CN102975350A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105493044A Pending CN102975350A (en) | 2012-12-18 | 2012-12-18 | Extruder screw with phase separation function |
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| CN (1) | CN102975350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481484A (en) * | 2013-09-27 | 2014-01-01 | 昆山凯诺尔金属制品有限公司 | Plastic extruder with charging port stirring function |
| CN103496145A (en) * | 2013-09-30 | 2014-01-08 | 昆山市华浦塑业有限公司 | Gas-assisted extrusion equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689182A (en) * | 1970-03-27 | 1972-09-05 | Midland Ross Corp | Extruder providing radial and axial melt removal |
| CN2670090Y (en) * | 2004-01-07 | 2005-01-12 | 上海鲍曼泵业有限公司 | Double-screw colloidal comminutor |
| CN202965172U (en) * | 2012-12-18 | 2013-06-05 | 海龙节能环保科技南通有限公司 | Extruder screw rod with phase separation function |
-
2012
- 2012-12-18 CN CN2012105493044A patent/CN102975350A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689182A (en) * | 1970-03-27 | 1972-09-05 | Midland Ross Corp | Extruder providing radial and axial melt removal |
| CN2670090Y (en) * | 2004-01-07 | 2005-01-12 | 上海鲍曼泵业有限公司 | Double-screw colloidal comminutor |
| CN202965172U (en) * | 2012-12-18 | 2013-06-05 | 海龙节能环保科技南通有限公司 | Extruder screw rod with phase separation function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481484A (en) * | 2013-09-27 | 2014-01-01 | 昆山凯诺尔金属制品有限公司 | Plastic extruder with charging port stirring function |
| CN103496145A (en) * | 2013-09-30 | 2014-01-08 | 昆山市华浦塑业有限公司 | Gas-assisted extrusion equipment |
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Application publication date: 20130320 |