CN101767435A - Compound co-extrusion conical screw extruder - Google Patents
Compound co-extrusion conical screw extruder Download PDFInfo
- Publication number
- CN101767435A CN101767435A CN201010128512A CN201010128512A CN101767435A CN 101767435 A CN101767435 A CN 101767435A CN 201010128512 A CN201010128512 A CN 201010128512A CN 201010128512 A CN201010128512 A CN 201010128512A CN 101767435 A CN101767435 A CN 101767435A
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- China
- Prior art keywords
- screw
- screw rod
- conical
- external screw
- extruder
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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
- B29C48/455—Screws arranged to convey material towards each other, e.g. separate screws arranged after each other and feeding in opposite directions
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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
- B29C48/445—Coaxially arranged screws, i.e. one within the other
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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
- B29C48/51—Screws with internal flow passages, e.g. for molten material
- B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/845—Heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a compound co-extrusion conical screw extruder which mainly consists of a charging device, a cylinder, screws, an extruder head, a motor and a driving device. The embedded inner screw and outer screw are arranged in the cylinder. The screwing directions of the inner screw and the outer screw are opposite, and the inner screw and the outer screw do reverse opposite rotation. The two screws can adopt three combination methods that: the inner screw is a conical screw, and the outer screw is a parallel screw; the inner screw is a parallel screw, and the outer screw is a conical screw; and the inner screw and the outer screw are all the conical screws. The embedded screws are connected with the same extruder head. The invention realizes single-machine double-layer co-extrusion, thereby decreasing the quality of the co-extruder hosts, saving the investment and land occupation space of equipment, simultaneously exerting the advantages of the conical screws and enhancing the extruding efficiency and the product processing quality.
Description
Technical field
Compound co-extrusion conical screw extruder of the present invention, can be used for composite plate, film, tubing, sheet material, fiber optic cables, etc. the composite co-extruding of plastic products.
Background technology
Composite co-extruding is that two or more polymer of different nature is carried out compound extruding, and forms the processing method of a multilayer single product.As composite wafer, film, sheet material, tubing, cable and multilayer hollow container etc.Mostly the equipment that is used for composite co-extruding at present is by two or two above screw extruder combinations, be expressed into different materials in the co-extrusion die head respectively, carry out compound, equipment investment is big, complicated, occupation area of equipment is big, and particularly the number of plies of composite article is many more, and this problem is outstanding more, in addition, all need be from the fused materials that different extruder barrels come out through redistributing, to reach the requirement of designed shape of product, molten polymer is in distributed process, the different flow regions that cause, produce the distribution of different melt temperatures and holdup time, not only efficient is low, thereby influences the outward appearance and the quality of goods.
Patent 200510105781.1 has proposed a kind of composite screw co-extruder.Nested inside and outside screw rod is housed in the machine barrel, and the hand of spiral of inside and outside screw rod is opposite, and inside and outside screw rod is made reverse relative rotary motion.Have first and second charge doors on the machine barrel, first charge door is corresponding with the external screw rod feeding section, have cannelure before the external screw rod feeding section, cannelure is corresponding with second charge door of machine barrel, the outer ring surface of cannelure and machine barrel inner surface constitute the closed ring storage compartment, annular has at the bottom of the storage compartment and makes second kind of material enter the charging hole of inner screw, and nested back screw rod connects same extruder head.Adopt an equipment can extrude two kinds of materials simultaneously, avoid or reduced fused materials and redistributed, thereby improved compound extrusion efficiency, improved the composite article quality.
Conical screw extruder screw rod tail diameter increases, and feeding quantity increases, and has improved extruder and has extruded output; The screw rod tail diameter increases the bearing capacity that has also increased screw rod; Feeding section screw channel volume is big, easily adds the bulk density powder of larger volume, also helps the heat conduction, and easier realization is to material heating or cooling; The discharge zone screw diameter is little, and peripheral speed is less, and the shearing of generation is lower, and frictional heat is also less, fire damage dangerous little; The screw channel volume reduces gradually along extruding direction, and material obtains compression gradually, thereby makes screw channel be full of material sooner, guarantees material plasticizing gently continuously; Under same production capacity, back pressure can be lower.
Therefore the parallel screw in the patent 200510105781.1 is substituted the advantage that can effectively bring into play conical screw and complex extruder with conical screw, obtain compound co-extrusion conical screw extruder of the present invention.
Summary of the invention
The present invention has concentrated the advantage of conical screw extruder and composite screw co-extruder.
Among the present invention, nested inside and outside screw rod is housed in the machine barrel, the hand of spiral of inside and outside screw rod is opposite, and inside and outside screw rod is made reverse relative rotary motion.Have first and second charge doors on the machine barrel, first charge door is corresponding with the external screw rod feeding section, have cannelure before the external screw rod feeding section, cannelure is corresponding with second charge door of machine barrel, the outer ring surface of cannelure and machine barrel inner surface constitute the closed ring storage compartment, annular has at the bottom of the storage compartment and makes second kind of material enter the charging hole of inner screw, and nested back screw rod connects same extruder head.On the machine barrel excircle heating collar is installed, is screw rod and machine barrel heating.The inner screw core is equipped with heating rod, is the inner screw heating.The inner screw core can also the admittance deep fat be the inner screw heating.
Above-mentioned external screw rod is driven through reduction box by motor and rotates, and inner screw is fixed on the stator, and external screw rod is made reverse relative rotary motion in making.Interior external screw rod also can be done the reverse rotation campaign by motor-driven respectively.
Above-mentioned interior external screw rod can carry out following respective combination according to the different characteristics of material and institute's fabricated product and the process conditions of processing.
A. external screw rod adopts conical screw, and inner screw adopts parallel screw.
B. external screw rod adopts parallel screw, and inner screw adopts conical screw.
C. interior external screw rod all adopts conical screw.
Effect of the present invention: owing to the nested reverse rotation interior external screw rod opposite in external screw rod with rotation direction, interior external screw rod can be extruded identical or different material simultaneously, the relative rotation speed of inner screw is interior external screw rod actual speed sum, the relative rotation speed of inner screw then improves greatly, the also corresponding raising of the conveying capacity of inner screw and output; When extruding identical material, an extruder can be equivalent to the effect of two single screw extrusion machines, has improved output and extrusion efficiency; When extruding different materials, can realize the unit double-layer coextrusion, also can reduce multi-layer co-extruded unit main frame number, save investment and occupation area of equipment, and the extrusion efficiency height, simple to operate, easy to maintenance.Use unit double-layer coextrusion composite machine head in addition, material can not enter from the side, can remedy the shortcoming of traditional co-extrusion technology, avoids the vestige of " weld bond ", improves product processing quality.Follow according to material and the different characteristics of institute's fabricated product and the process conditions of processing etc., (a, b c), give full play to the advantage of conical screw, improve plasticizing effect, obtain better goods can to carry out three kinds of above-mentioned screw combinations.
Specific embodiments
Compound co-extrusion conical screw extruder of the present invention mainly comprises: motor 11, reduction box 2, machine barrel 5, external screw rod 7, inner screw 8, stator 1, the first charge door 4, the second charge doors 3, machine barrel heating collar 6, inner screw heater 9, mouthful mould 10.
Operation principle (see figure 1): driven by motor external screw rod when rotation, and produce opposite rotatablely moving between the inner screw (fixing or motor drives separately).Add a kind of material by loading hopper 4, enter that external screw rod pushes, carries, plasticizing, fusion.Add another kind of material by loading hopper 3, the cannelure and the machine barrel inner surface that enter into the external screw rod front end constitute in the sealing storage compartment, circumferentially distribute along the external screw rod cannelure, and enter inner screw from the charging hole 12 of annular storage compartment.The material that enters inner screw under the effect of the turning effort of external screw rod and core heating rod, extruding, carry, plasticizing and fusion.Because the direction of rotation of inner screw and external screw rod is opposite, and the inside and outside screw flight hand of spiral is also opposite, two kinds of materials are carried along the same direction of screw rod, import same extruder composite machine head 10 extrusion moldings.
The present invention has three kinds of screw combinations modes
A. external screw rod adopts conical screw, and inner screw adopts parallel screw.(Fig. 2)
B. external screw rod adopts parallel screw, and inner screw adopts conical screw.(Fig. 3)
C. interior external screw rod all adopts conical screw.(Fig. 4)
Can carry out corresponding screw combinations selection according to the different characteristics of material and institute's fabricated product and the process conditions of processing.Obtain good goods, realized lower energy consumption.
Description of drawings
Fig. 1 is the structural representation of compound co-extrusion conical screw extruder
Fig. 2 all adopts the schematic diagram of conical screw for interior external screw rod
Fig. 3 adopts parallel screw for inner screw, and external screw rod adopts the schematic diagram of conical screw
Fig. 4 adopts conical screw for inner screw, and external screw rod adopts the schematic diagram of parallel screw
Fig. 5 is the A-A cutaway view among Fig. 2, Fig. 3, and 4 corresponding construction is similar
Claims (4)
1. compound co-extrusion conical screw extruder, mainly by feeding device, machine barrel, screw rod, machine head port mould and motor and transmission device are formed, it is characterized in that: nested interior external screw rod is housed in the machine barrel, the hand of spiral of interior external screw rod is opposite, and interior external screw rod is made reverse relative rotary motion, the same first charge door and second charge door of having of machine, first charge door is corresponding with the external screw rod feeding section, have cannelure before the external screw rod feeding section, cannelure is corresponding with second charge door of machine barrel, the outer ring surface of cannelure and inner surface constitute the closed ring storage compartment, having at the bottom of the annular storage compartment makes second kind of material enter the charging hole of inner screw, connect same extruder head behind the nested screw rod, inside and outside two screw rods can carry out the combination of conical screw and parallel screw, can be conical screw entirely also.
2. according to requiring 1 described screw extruder in the right, it is characterized in that: external screw rod is rotated by motor-driven, and inner screw is fixed on the stator or separately by another motor-driven, external screw rod is made reverse relative rotary motion in making.
3. screw extruder according to claim 1 is characterized in that: installation kit is wrapped with heating collar on the machine barrel excircle, is screw rod and machine barrel heating, and the inner screw core is equipped with heating rod or admittance deep fat, is the inner screw heating.
4. inside and outside two screw rods according to claim 1 can carry out the combination of conical screw and parallel screw, can be conical screw entirely also, it is characterized in that: can inner screw be conical screw, external screw rod is a parallel screw, can inner screw be parallel screw also, external screw rod is a conical screw, can also be conical screw by interior external screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128512A CN101767435A (en) | 2010-03-22 | 2010-03-22 | Compound co-extrusion conical screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128512A CN101767435A (en) | 2010-03-22 | 2010-03-22 | Compound co-extrusion conical screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101767435A true CN101767435A (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010128512A Pending CN101767435A (en) | 2010-03-22 | 2010-03-22 | Compound co-extrusion conical screw extruder |
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| Country | Link |
|---|---|
| CN (1) | CN101767435A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248655A (en) * | 2011-06-10 | 2011-11-23 | 北京化工大学 | Tapered planetary screw extruder |
| CN104511982A (en) * | 2013-09-30 | 2015-04-15 | 克朗斯股份公司 | Device for heating plastic flakes |
| CN106003658A (en) * | 2016-07-11 | 2016-10-12 | 盐城工学院 | Short-screw double material extruding machine |
| CN106042324A (en) * | 2016-07-11 | 2016-10-26 | 盐城工学院 | Contraposition spiral short screw extruder |
| WO2017206128A1 (en) * | 2016-06-01 | 2017-12-07 | 深圳万为智能制造科技有限公司 | Printing head for 3d printing, control system, 3d printer, and printing method |
| CN108044911A (en) * | 2017-12-01 | 2018-05-18 | 展红明 | Screw extrusion apparatus |
| CN114210520A (en) * | 2021-12-08 | 2022-03-22 | 佛山市亨力豪机械有限公司 | Glue spraying machine |
| CN115056394A (en) * | 2022-07-02 | 2022-09-16 | 哈尔滨理工大学 | Heating device of ultraviolet irradiation crosslinking equipment |
| CN117048016A (en) * | 2023-10-11 | 2023-11-14 | 江苏奥瑞斯智能装备有限公司 | Extrusion molding machine for plastic production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939699A (en) * | 2005-09-29 | 2007-04-04 | 北京化工大学 | Composite screw co-extruder |
| CN201721024U (en) * | 2010-03-22 | 2011-01-26 | 北京化工大学 | Compound co-extruding conical screw extruder |
-
2010
- 2010-03-22 CN CN201010128512A patent/CN101767435A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939699A (en) * | 2005-09-29 | 2007-04-04 | 北京化工大学 | Composite screw co-extruder |
| CN201721024U (en) * | 2010-03-22 | 2011-01-26 | 北京化工大学 | Compound co-extruding conical screw extruder |
Non-Patent Citations (1)
| Title |
|---|
| 《高分子材料成型加工》 20090630 周达飞，唐颂超 双螺杆挤出机的应用 中国轻工业出版社 251 1-4 , 1 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248655A (en) * | 2011-06-10 | 2011-11-23 | 北京化工大学 | Tapered planetary screw extruder |
| CN104511982A (en) * | 2013-09-30 | 2015-04-15 | 克朗斯股份公司 | Device for heating plastic flakes |
| WO2017206128A1 (en) * | 2016-06-01 | 2017-12-07 | 深圳万为智能制造科技有限公司 | Printing head for 3d printing, control system, 3d printer, and printing method |
| CN106003658A (en) * | 2016-07-11 | 2016-10-12 | 盐城工学院 | Short-screw double material extruding machine |
| CN106042324A (en) * | 2016-07-11 | 2016-10-26 | 盐城工学院 | Contraposition spiral short screw extruder |
| CN106003658B (en) * | 2016-07-11 | 2018-07-03 | 盐城工学院 | A kind of short screw double-material extruder |
| CN106042324B (en) * | 2016-07-11 | 2019-02-26 | 盐城工学院 | A kind of opposed spiral short screw extruder |
| CN108044911A (en) * | 2017-12-01 | 2018-05-18 | 展红明 | Screw extrusion apparatus |
| CN114210520A (en) * | 2021-12-08 | 2022-03-22 | 佛山市亨力豪机械有限公司 | Glue spraying machine |
| CN115056394A (en) * | 2022-07-02 | 2022-09-16 | 哈尔滨理工大学 | Heating device of ultraviolet irradiation crosslinking equipment |
| CN117048016A (en) * | 2023-10-11 | 2023-11-14 | 江苏奥瑞斯智能装备有限公司 | Extrusion molding machine for plastic production |
| CN117048016B (en) * | 2023-10-11 | 2023-12-26 | 江苏奥瑞斯智能装备有限公司 | Extrusion molding machine for plastic production |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100707 |