CN202878649U - Matching device of materials between adjacent blade plastification and conveying units of blade extruder - Google Patents
Matching device of materials between adjacent blade plastification and conveying units of blade extruder Download PDFInfo
- Publication number
- CN202878649U CN202878649U CN2012205211378U CN201220521137U CN202878649U CN 202878649 U CN202878649 U CN 202878649U CN 2012205211378 U CN2012205211378 U CN 2012205211378U CN 201220521137 U CN201220521137 U CN 201220521137U CN 202878649 U CN202878649 U CN 202878649U
- Authority
- CN
- China
- Prior art keywords
- plasticizing
- blade
- unit
- extruder
- baffle plate
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
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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
- B29C48/565—Screws having projections other than the thread, e.g. pins
-
- 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
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
- B29C48/605—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread being discontinuous
Landscapes
- 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
本实用新型涉及叶片挤出机相邻叶片塑化输运单元间物料匹配装置。叶片挤出机由一组叶片进料单元与若干组叶片塑化输运单元串联叠加而成，相邻叶片塑化输运单元之间通过挡板连接。挡板起导流与密封的作用，上游叶片单元的物料通过挡板上的物料出口平滑流入到下游叶片单元，实现相邻叶片塑化单元之间物料的过渡。该装置实现了叶片挤出机完全正位移输送的塑化输运机理，同时避免了成型过程中存在流动死角、缩短了物料在高温下的停留时间、同时物料的停留时间分布更均匀，减少了物料的热降解。
The utility model relates to a material matching device between adjacent blade plasticizing and transporting units of a blade extruder. The vane extruder is composed of a group of vane feeding units and several sets of vane plasticizing and transporting units stacked in series, and adjacent vane plasticizing and transporting units are connected by baffles. The baffle plays the role of diversion and sealing, and the material of the upstream blade unit smoothly flows into the downstream blade unit through the material outlet on the baffle, so as to realize the transition of materials between adjacent blade plasticizing units. The device realizes the plasticizing transportation mechanism of the vane extruder's complete positive displacement transportation, and at the same time avoids the flow dead angle in the molding process, shortens the residence time of the material at high temperature, and at the same time the distribution of the residence time of the material is more uniform, reducing the Thermal degradation of materials.
Description
Technical field
The utility model relates to the transition method that a kind of two groups of adjacent blades plasticizing transports material between the unit, and specifically the plasticizing of blade extruder adjacent blades transports material matching device between the unit.
Background technology
Blade extruder is to be formed by several blade plasticization unit overlapped in series, and it is opposite that the plasticizing of two adjacent blades transports between unit rotor and the stator eccentric direction, and the adjacent blades plasticizing transports the unit and connects by baffle plate.It is to utilize one group of space with definite geometry that its plasticizing of blade extruder transports principle, the successively ascending more descending cyclically-varying of their volume, when becoming large, volume includes material in, compacting when volume diminishes, plasticizing are also discharged material, realize that the material plasticizing that tensile deformation plays a major role transports.Simultaneously owing to material in the high polymer material plasticizing extrusion molding process will occur from the variation of the forms such as glassy state, elastomeric state, viscous state.The variation of the variation of material form, the compressibility of macromolecule melt and the temperature of material, suffered pressure will directly affect the volume size of certain mass material, thereby each blade plasticizing transports the big or small different of eccentric throw between unit rotor and the stator under the identical condition of stator width.In the plasticizing transport process, material must be continuously transports the unit from the upstream plasticizing and is transitioned into the downstream plasticizing and transports the unit and finish the plasticizing transport process.Eccentric direction and the not of uniform size of eccentric throw cause between the unit because the plasticizing of each compressing tablet transports, thereby are easy to occur the dead angle.The existence at dead angle will prolong at high temperature time of staying of melt, increase the degraded of macromolecular material, simultaneously so that the time of staying skewness of material in the forming process, and then affect surface quality and the mechanical mechanics property of goods.
The utility model content
The purpose of this utility model is to solve the problem that two adjacent blade plasticizings transport units match and material transition, provides the plasticizing of blade extruder adjacent blades to transport material matching device between the unit, and concrete technical scheme is as follows.
Blade extruder adjacent blades of the present utility model plasticizing transports material matching device between the unit, is characterized in being installed in two plasticizings and transports on the baffle plate between the unit and offer material outlet; The baffle plate endoporus is concentric with cylindrical, and interior hole size is identical with the root diameter that plasticizing transports the unit; Described material outlet and inner eccentric holes, eccentric throw are less than or equal to plasticizing and transport the stator of unit and the eccentric throw between the armature spindle, and the material outlet cross section is a circular arc that is connected with the baffle plate inner hole smooth.
Further, according to the difference of material flow through the position, the eccentric throw of the above material outlet circular arc of baffle plate and endoporus is less than or equal to the eccentric throw between stator and the rotor, and described material outlet circular arc is less than the length of hemicycle.
Further, the material outlet position of adjacent two baffle plates is arranged symmetrically with about the rotor center axis in extruder.
The plasticizing of blade extruder adjacent blades transports material matching process between the unit, specifically: the two blades plasticizing that eccentric direction is opposite transports installs baffle plate between the unit, offer material outlet on the baffle plate, this material outlet is connected with the material outlet that the upstream blade plasticizing transports the unit, baffle plate plays water conservancy diversion and sealing function, seamlessly transits so that material transports between the unit in adjacent two plasticizings.
Compared with prior art, the utlity model has following advantage:
1, simple in structure, baffle plate plays the effect of sealing and water conservancy diversion simultaneously;
2, do not have the dead angle fully, material is residual few;
3, the time of staying of material is more evenly distributed in the plasticizing transport process, has improved plasticizing quality.
Description of drawings
Fig. 1 is blade extruder A--A cutaway view.
Fig. 2 is blade extruder B--B cutaway view.
Fig. 3 is the structural representation of the 3rd baffle plate 3.
Fig. 4 is the structural representation of the first baffle plate 1.
Fig. 5 is the C--C cutaway view of the first baffle plate 1.
Fig. 6 is the structural representation of second baffle 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further, but the claimed scope of the utility model is not limited to the scope of embodiment statement.
Embodiment 1
Referring to Fig. 1, Fig. 2, blade extruder transports unit (II ~ VII) overlapped in series by blade feed unit I and some groups of blade plasticizings and forms, it is opposite with the eccentric direction of stator that adjacent two blades plasticizing transports the unit rotor, the size of the eccentric throw of rotor and stator can be inconsistent, and the plasticizing of two adjacent groups blade transports the unit and is formed by connecting by baffle plate.Because two adjacent groups blade unit eccentric direction is opposite, thereby the position of the discharge gate of two groups of unit is symmetrical about the rotor center axis.
Its plasticizing of blade extruder transports as volume and carries, and the baffle plate that the plasticizing of two adjacent groups blade transports between the unit plays sealing and water conservancy diversion.During rotor, the upstream blade unit is included material in when being transported spatial volume that stator, rotor, blade and baffle plate etc. in the unit surround by blade plasticizing and change from small to big, when this spatial volume is discharged material from large to small the time.Offer material outlet at the baffle plate that connection two adjacent blades plasticizings transport the unit.Material outlet and inner eccentric holes, eccentric throw is less than or equal to the eccentric throw between stator and the rotor, the material outlet cross section is a circular arc that is connected with the baffle plate inner hole smooth, so that material can smoothly transit to the space of baffle plate and stator and enter into the downstream blade unit, realize the transition of material in adjacent two blade units.
As shown in Figure 3, the baffle plate endoporus is concentric with cylindrical, diameter is identical with root diameter and offer material outlet.Material outlet is one section circular arc with inner eccentric holes, and its eccentric throw is less than or equal to the eccentric throw between stator and the rotor.When the blade supply unit was 2 groups of concavo-convex relative blades, the material outlet of second baffle 2 was 1/4 circle, and radius is R, and R is less than or equal to radius and the eccentric distance e sum of armature spindle, and other circular arc then seals.Referring to Fig. 4, Fig. 5, when material enters into plasticizing when transporting unit II from blade feed unit I, material is fully melting also, and transporting resistance is larger.This moment, the material outlet with the first baffle plate 1 was designed to the contraction shape that flow area gradually changes from big to small, reduced flow resistance thereby increase circulation area.Referring to Fig. 6, in order to increase the time of staying, the raising plasticizing melting effect in the material plasticizing transport process, this moment, the material outlet designed arc-shaped appearance with the 3rd baffle plate 3 was symmetrical half circumference, the radius R of circumference is less than or equal to radius and the eccentric distance e sum of armature spindle, and other half circumference then seals.This moment, material can produce backflow between the upstream and downstream unit, had improved the plasticizing melting effect.Transport unit combination by the first different baffle plates 1, second baffle 2, the 3rd baffle plate 3 with some retable, realize the plastication and extrusion process of blade extruder.
Claims (3)
1. blade extruder adjacent blades plasticizing transports material matching device between the unit, it is characterized in that being installed in two plasticizings and transports on the baffle plate between the unit and offer material outlet; The baffle plate endoporus is concentric with the baffle plate cylindrical, and interior hole size is identical with the root diameter that plasticizing transports the unit; Described material outlet and inner eccentric holes, eccentric throw are less than or equal to plasticizing and transport the stator of unit and the eccentric throw between the armature spindle, and the material outlet cross section is a circular arc that is connected with the baffle plate inner hole smooth.
2. device according to claim 1, the eccentric throw that it is characterized in that the above material outlet circular arc of baffle plate and endoporus is less than or equal to the eccentric throw between stator and the rotor, and described material outlet circular arc is less than the length of hemicycle.
3. device according to claim 2 is characterized in that the material outlet position of adjacent two baffle plates is arranged symmetrically with about the rotor center axis in extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205211378U CN202878649U (en) | 2012-10-12 | 2012-10-12 | Matching device of materials between adjacent blade plastification and conveying units of blade extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205211378U CN202878649U (en) | 2012-10-12 | 2012-10-12 | Matching device of materials between adjacent blade plastification and conveying units of blade extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202878649U true CN202878649U (en) | 2013-04-17 |
Family
ID=48070111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205211378U Expired - Fee Related CN202878649U (en) | 2012-10-12 | 2012-10-12 | Matching device of materials between adjacent blade plastification and conveying units of blade extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202878649U (en) |
-
2012
- 2012-10-12 CN CN2012205211378U patent/CN202878649U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151012 |
|
| EXPY | Termination of patent right or utility model |