CN102107516A - Double-screw extruder - Google Patents
Double-screw extruder Download PDFInfo
- Publication number
- CN102107516A CN102107516A CN2010105748311A CN201010574831A CN102107516A CN 102107516 A CN102107516 A CN 102107516A CN 2010105748311 A CN2010105748311 A CN 2010105748311A CN 201010574831 A CN201010574831 A CN 201010574831A CN 102107516 A CN102107516 A CN 102107516A
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- China
- Prior art keywords
- screw extruder
- screw
- double
- long bolt
- gear
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- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/42—Non-identical or non-mirrored screws
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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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a double-screw extruder, and belongs to the field of plastic mechanical manufacturing. At present, a double-screw extruder with simple structure, reasonable design and two screws of different lengths is unavailable. The double-screw extruder comprises a driving motor, a distribution box with a driving gear and a driven gear, a reduction box, a machine cylinder, an exhaust system, a hopper, a feed system and a machine frame, wherein the driving motor, the distribution box, the reduction box and the machine cylinder are arranged on the machine frame; the reduction box, is connected with the driving motor; the driving gear in the distribution box is connected with the reduction box, and is matched with the driven gear; the feed system is connected with the machine cylinder; and the exhaust system is arranged on the machine cylinder. The double-screw extruder is characterized by also comprising a long screw and a short screw which are arranged on the driving gear and the driven gear; and the long screw and the short screw are both positioned in the machine cylinder. The double-screw extruder has reasonable structural design, scientific layout, stable pressure and excellent extruding performance, and combines the advantages of a single-screw extruder and the double-screw extruder.
Description
Technical field
The present invention relates to a kind of double screw extruder, especially relate to a kind of two double screw extruders that screw rod is different in size, can not only be applicable to parallel parallel dual-screw extruding machine and parallel counter rotation twin screw extruder, also be applicable to taper counter rotation twin screw extruder and conical parallel dual-screw extruding machine, belong to plastics machinery and make the field.
Background technology
How many extruders commonly used can be divided into single screw extrusion machine, double screw extruder and multi-screw extruder according to screw rod quantity, and at present, it is more that single screw extrusion machine and double screw extruder use on market.In order to make double screw extruder have good plasticizing capacity, those of skill in the art are used to consider and need are arranged to the length of two screw rods in the double screw extruder isometric.For example, open day is on 05 24th, 2006, publication number is in the Chinese patent of CN1775505, a kind of conical parallel dual-screw extruding machine is disclosed, this conical parallel dual-screw extruding machine is made up of institutes such as drive motors, shaft coupling, deceleration distributor box, feed system, machine barrel, conical double-screw, gas extraction system, pelletizing system and hoppers, two screw rods in this conical double-screw are conical screw, and the length of these two screw rods is isometric.For another example, open day is on 08 20th, 2008, and publication number is in the Chinese patent of CN101247932, discloses a kind of Heterodromy double-screw extruder, and two parallel rotors of this Heterodromy double-screw extruder axis also are isometric.And for example, open day is on December 24th, 2003, publication number is in the Chinese patent of CN1462682, discloses a kind of double screw extruder that is used for middle and high viscosity system, and this length of two screwing elements that is used for the double screw extruder of middle and high viscosity system also is isometric.
As everyone knows, double screw extruder has the good advantage of plasticizing capacity, but its pressure transient; And single screw extrusion machine has the stable advantage of extrusion pressure, but its plasticizing capacity is bad.In sum, if the advantage of above-mentioned two kinds of screw extruders can be united two into one, the scope of application of screw extruder will further be enlarged, and this will be a major reform in the screw extruder industry.
But, also do not develop at present a kind of simple in structure, reasonable in design, two double screw extruders that screw rod is different in size, cause present double screw extruder to be difficult to reach simultaneously the twin-screw plasticizing capacity and reach the stable advantage of extrusion pressure well, thereby limited the scope of application.
Summary of the invention
The objective of the invention is to overcome above shortcomings in the prior art, and provide a kind of reasonable in design, scientific arrangement, pressure stability, the double screw extruder that extrusion performance is good.
The present invention addresses the above problem the technical scheme that is adopted: this double screw extruder comprises drive motors, be provided with the distributor box of driving gear and driven gear, reduction box, machine barrel, gas extraction system, hopper, feed system and frame, described drive motors, distributor box, reduction box and machine barrel are installed on the frame, described reduction box is connected with drive motors, driving gear in the described distributor box is connected with reduction box, this driving gear and driven gear match, described hopper is installed on the feed system, this feed system is connected with machine barrel, described gas extraction system is installed on the machine barrel, its characteristics are: also comprise long bolt and short screw, described long bolt and short screw are installed in respectively on driving gear and the driven gear, described long bolt and short screw all are arranged in machine barrel, and this long bolt and short screw cooperatively interact.
The present invention also comprises shaft coupling, and described reduction box is connected with drive motors by shaft coupling.
Distributor box of the present invention also comprises idler gear, and this idler gear is meshed with driving gear, and described driven gear is meshed with idler gear, and the long bolt and the short screw that drive in the machine barrel rotate in the same way.
Driving gear and driven gear in the distributor box of the present invention are meshed, and drive long bolt and the incorgruous rotation of short screw in the machine barrel.
Long bolt of the present invention and short screw are conical screw.
Long bolt of the present invention and short screw are formed the parallel double-screw structure.
The length of long bolt of the present invention and the length ratio of short screw are more than or equal to 1.1:1.
Distributor box of the present invention also comprises idler gear, and this idler gear is meshed with driving gear, and described driven gear is meshed with idler gear, and the long bolt and the short screw that drive in the machine barrel rotate in the same way.
Driving gear and driven gear in the distributor box of the present invention are meshed, and drive long bolt and the incorgruous rotation of short screw in the machine barrel.
The present invention compared with prior art, have the following advantages and effect: the driving gear that is driven in the distributor box by drive motors rotates, driving gear and driven gear match, driven gear can rotate with the rotation of driving gear, driving gear drives long bolt and rotates, and driven gear drives short screw and rotates.During use, material at first plastifies through long bolt and short screw, and the front end by long bolt measures voltage stabilizing and extrudes then.
It is good and the single screw extrusion machine extrusion performance is good, the advantage of pressure stability that the present invention can satisfy the double screw extruder plasticizing capacity simultaneously, under the prerequisite that guarantees plasticizing quality, increased voltage regulation performance, further promoted the banburying of extruder, make plasticizing more even, more improved the extrusion pressure of complete machine, reach and better extrude effect, make that the complete machine performance is better, improved the plasticizing quality and the output of product greatly.
Of the present invention simple in structure, reasonable in design, easy and simple to handle, the production efficiency height can further be optimized plasticizing capacity and extrude the power performance, has crucial economic worth and market popularization value.The present invention unites two into one the advantage of single screw extrusion machine and the advantage of double screw extruder, promptly merge the double screw extruder plasticizing capacity and reached the big double dominant of single screw extrusion machine extrusion pressure well, reasonable in design, the scope of application is wider, helps promoting the better development of extruder industry.
Description of drawings
Fig. 1 is the structural representation of double screw extruder in the embodiment of the invention.
Fig. 2 is that long bolt and short screw are installed in structural representation in the machine barrel in the embodiment of the invention.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and by embodiment, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment:
Referring to Fig. 1 to Fig. 2, double screw extruder in the present embodiment comprises drive motors 1, shaft coupling 2, distributor box 3, reduction box 4, machine barrel 5, long bolt 61, short screw 62, gas extraction system 7, hopper 8, feed system 9 and frame 10, wherein, be provided with driving gear, idler gear, driven gear in the distributor box 3, idler gear is meshed with driving gear, driven gear is meshed with idler gear, be that driving gear and driven gear match, can drive driven gear by driving gear and rotate.The present invention also can only be provided with driving gear and driven gear in distributor box 3, this driving gear and driven gear are meshed, and promptly driving gear and driven gear match.
Hopper 8 in the present embodiment is installed on the feed system 9, and this feed system 9 is connected with machine barrel 5, and gas extraction system 7 is installed on the machine barrel 5, and the material that is arranged in hopper 8 enters machine barrel 5 by feed system 9.
The length of long bolt 61 is greater than the length of short screw 62 in the present embodiment, and the length ratio of the length of long bolt 61 and short screw 62 is more than or equal to 1.1:1, and promptly long bolt 61 is longer more than 10% than short screw 62.After the front end of the front end of long bolt 61 and short screw 62 was installed on driving gear and the driven gear respectively, the shank of the shank of this long bolt 61 and short screw 62 flushed, and long bolt 61 in the length of machine barrel endoporus greater than the length of short screw 62 at the machine barrel endoporus.
Double screw extruder in the present embodiment in use, starting drive motors 1 starts working, the material that is arranged in hopper 8 enters machine barrel 5 by feed system 9, drive motors 1 rotates by the driving gear that reduction box 4 drives in the distributor box 3, idler gear is meshed with driving gear, driving idler gear by driving gear rotates, driven gear is meshed with idler gear, driving driven gear by idler gear rotates, at this moment, driving gear and the equidirectional rotation of driven tooth crop rotation are done equidirectional rotation thereby drive long bolt 61 with short screw 62.
Because the length of long bolt 61 is greater than the length of short screw 62, in long bolt 61 and short screw 62 mutual zones side by side, long bolt 61 and short screw 62 plastify material jointly; And the front end of long bolt 61 is nearer apart from the outlet of machine barrel 5, promptly only has long bolt 61 in the exit of machine barrel 5, extrudes by 61 pairs of materials of long bolt, and long bolt 61 improves the extrusion performance of complete machine at the machine barrel 5 terminal steady pressures that increase.Double screw extruder in the present embodiment had both kept the advantages such as thrust is big, plasticizing capacity is good of extruding of traditional extruder, had improved output again, had saved energy consumption, also from having increased steady pressure in essence, had reached even more ideal extrusion performance.
More than be applied to embodiment in the parallel dual-screw extruding machine for the present invention, the present invention can also be applied in the counter rotation twin screw extruder, as in distributor box 3, only being provided with driving gear and driven gear, this driving gear and driven gear are meshed, and promptly driving gear and driven gear match.Drive motors 1 is connected with reduction box 4 by shaft coupling 2, reduction box 4 is connected with driving gear, driving gear is connected with long bolt 61, driven gear is connected with short screw 62, can drive long bolt 61 by driving gear and rotate, can drive short screw 62 by driven gear and rotate.When drive motors 1 rotates by the driving gear that reduction box 4 drives in the distributor box 3, driven gear is meshed with driving gear, driving driven gear by driving gear rotates, at this moment, driving gear and the incorgruous rotation of driven tooth crop rotation are done incorgruous rotation thereby drive long bolt 61 with short screw 62.
Need to prove that long bolt 61 among the present invention and short screw 62 cooperatively interact and material plastified be prior art, no longer describe in detail herein.
Though the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technical staff who is familiar with this technology, change and the retouching done in not breaking away from design of the present invention and scope all should belong to protection scope of the present invention.
Claims (9)
1. double screw extruder, comprise drive motors, be provided with the distributor box of driving gear and driven gear, reduction box, machine barrel, gas extraction system, hopper, feed system and frame, described drive motors, distributor box, reduction box and machine barrel are installed on the frame, described reduction box is connected with drive motors, driving gear in the described distributor box is connected with reduction box, this driving gear and driven gear match, described hopper is installed on the feed system, this feed system is connected with machine barrel, described gas extraction system is installed on the machine barrel, it is characterized in that: also comprise long bolt and short screw, described long bolt and short screw are installed in respectively on driving gear and the driven gear, described long bolt and short screw all are arranged in machine barrel, and this long bolt and short screw cooperatively interact.
2. double screw extruder according to claim 1 is characterized in that: also comprise shaft coupling, described reduction box is connected with drive motors by shaft coupling.
3. double screw extruder according to claim 1 and 2 is characterized in that: described distributor box also comprises idler gear, and this idler gear is meshed with driving gear, and described driven gear is meshed with idler gear.
4. double screw extruder according to claim 1 and 2 is characterized in that: driving gear and driven gear in the described distributor box are meshed.
5. double screw extruder according to claim 1 and 2 is characterized in that: described long bolt and short screw are conical screw.
6. double screw extruder according to claim 1 and 2 is characterized in that: described long bolt and short screw are formed the parallel double-screw structure.
7. double screw extruder according to claim 1 and 2 is characterized in that: the length of described long bolt and the length ratio of short screw are more than or equal to 1.1:1.
8. double screw extruder according to claim 1 and 2, it is characterized in that: described distributor box also comprises idler gear, this idler gear is meshed with driving gear, and described driven gear is meshed with idler gear, and the long bolt and the short screw that drive in the machine barrel rotate in the same way.
9. double screw extruder according to claim 1 and 2 is characterized in that: driving gear and driven gear in the described distributor box are meshed, and drive long bolt and the incorgruous rotation of short screw in the machine barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105748311A CN102107516A (en) | 2010-12-06 | 2010-12-06 | Double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105748311A CN102107516A (en) | 2010-12-06 | 2010-12-06 | Double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102107516A true CN102107516A (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105748311A Pending CN102107516A (en) | 2010-12-06 | 2010-12-06 | Double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102107516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562951A (en) * | 2011-12-13 | 2012-07-11 | 向修礼 | Double-screw speed reducer convenient for maintenance |
| CN103407145A (en) * | 2013-08-08 | 2013-11-27 | 常州市吉沃橡塑机械有限公司 | Double-screw extruder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025058A (en) * | 1975-08-14 | 1977-05-24 | Dai Nippon Toryo Co., Ltd. | Continuous extruder for thermosetting resins |
| US4029300A (en) * | 1975-10-17 | 1977-06-14 | The Japan Steel Works Ltd. | Extruder of the degassing and modification type |
| JPH0480014A (en) * | 1990-07-23 | 1992-03-13 | Tooshin:Kk | Extruder |
| CN1452540A (en) * | 2000-09-07 | 2003-10-29 | 卡尔部工业股份有限公司 | Process for producing thermoplastic resin composition and thermoplastic resin composition obtained thereby |
| CN1676307A (en) * | 2004-03-30 | 2005-10-05 | 株式会社神户制钢所 | Conical twin-screw extruder and dehydrator |
| CN1775505A (en) * | 2004-12-17 | 2006-05-24 | 吴汉民 | Conical parallel dual-screw extruding machine |
| CN201960728U (en) * | 2010-12-06 | 2011-09-07 | 吴汉民 | Double screw extruder |
-
2010
- 2010-12-06 CN CN2010105748311A patent/CN102107516A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025058A (en) * | 1975-08-14 | 1977-05-24 | Dai Nippon Toryo Co., Ltd. | Continuous extruder for thermosetting resins |
| US4029300A (en) * | 1975-10-17 | 1977-06-14 | The Japan Steel Works Ltd. | Extruder of the degassing and modification type |
| JPH0480014A (en) * | 1990-07-23 | 1992-03-13 | Tooshin:Kk | Extruder |
| CN1452540A (en) * | 2000-09-07 | 2003-10-29 | 卡尔部工业股份有限公司 | Process for producing thermoplastic resin composition and thermoplastic resin composition obtained thereby |
| CN1676307A (en) * | 2004-03-30 | 2005-10-05 | 株式会社神户制钢所 | Conical twin-screw extruder and dehydrator |
| CN1775505A (en) * | 2004-12-17 | 2006-05-24 | 吴汉民 | Conical parallel dual-screw extruding machine |
| CN201960728U (en) * | 2010-12-06 | 2011-09-07 | 吴汉民 | Double screw extruder |
Non-Patent Citations (1)
| Title |
|---|
| 张平亮: "双螺杆挤出机的进展及其应用", 《工程塑料应用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562951A (en) * | 2011-12-13 | 2012-07-11 | 向修礼 | Double-screw speed reducer convenient for maintenance |
| CN102562951B (en) * | 2011-12-13 | 2015-12-09 | 向修礼 | Be convenient to the Double-screw speed reducer keeped in repair |
| CN103407145A (en) * | 2013-08-08 | 2013-11-27 | 常州市吉沃橡塑机械有限公司 | Double-screw extruder |
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Application publication date: 20110629 |