CN102990898B - Method and device for matching materials among adjacent blade plasticization transportation units of blade squeezer - Google Patents
Method and device for matching materials among adjacent blade plasticization transportation units of blade squeezer Download PDFInfo
- Publication number
- CN102990898B CN102990898B CN201210385143.XA CN201210385143A CN102990898B CN 102990898 B CN102990898 B CN 102990898B CN 201210385143 A CN201210385143 A CN 201210385143A CN 102990898 B CN102990898 B CN 102990898B
- Authority
- CN
- China
- Prior art keywords
- blade
- sending unit
- baffle plate
- material outlet
- plasticizing
- 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
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
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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 a method and a device for matching materials among adjacent blade plasticization transportation units of a blade squeezer. The blade squeezer consists of a group of blade feeding units and a plurality of blade plasticization transportation units, which are connected in series in an overlapping manner; the adjacent blade plasticization transportation units are connected through baffles having stream guidance and sealing effects; and the materials of the blade units on the upstream smoothly flow into the blade units on the downstream through material outlets in the baffles, so that the transition of the materials among the adjacent blade plasticization transportation units can be realized. With the adoption of the method provided by the invention, a plasticization transportation mechanism of entire positive displacement transportation of the blade squeezer can be realized; and meanwhile, the flow dead angle in a molding process can be avoided; the remaining time of the materials at a high temperature is reduced; the distribution of remaining time of the materials is uniform; and the thermal degradation of the materials can be reduced.
Description
Technical field
The present invention relates to the transition method of material between a kind of two groups of adjacent blades plasticizing sending unit, specifically material matching process and device between blade extruder adjacent blades plasticizing sending unit.
Background technology
Blade extruder is formed by several blade plasticization unit overlapped in series, and two adjacent blades plasticizing sending unit rotors are contrary with eccentric direction between stator, and adjacent blades plasticizing sending unit is connected by baffle plate.It is utilize to have the space determining geometry that its plasticizing of blade extruder transports principle, their volume can ascending descending cyclically-varying more successively, material is included in when volume becomes large, compacting when volume diminishes, plasticizing effluent material, realize the material plasticizing that tensile deformation plays a major role and transport.Simultaneously because the change from forms such as glassy state, elastomeric state, viscous states will occur material in high polymer material plasticizing extrusion molding process.The change of material form, the compressibility of macromolecule melt and the temperature of material, the change of suffered pressure will directly affect the volume size of certain mass material, and thus under the condition that stator width is identical, between each blade plasticizing sending unit rotor and stator, the size of eccentric throw is different.In plasticizing transport process, material must be transitioned into downstream plasticizing sending unit from upstream plasticizing sending unit continuously and complete plasticizing transport process.Because between each compressing tablet plasticizing sending unit, eccentric direction and the not of uniform size of eccentric throw cause, be thus easy to occur dead angle.The existence at dead angle, by extending the melt time of staying at high temperature, increasing the degraded of macromolecular material, makes the residence time destribution of material in forming process uneven simultaneously, and then affects surface quality and the mechanical mechanics property of goods.
Summary of the invention
The object of the invention is to the problem of solution two adjacent blades plasticizing sending unit coupling and material transition, provide blade extruder adjacent blades to plastify material matching process and device between sending unit, concrete technical scheme is as follows.
Material matching process between blade extruder adjacent blades plasticizing sending unit, specifically: between the two blade plasticizing sending unit that eccentric direction is contrary, baffle plate is installed, baffle plate offers material outlet, the material outlet that this material outlet plastifies sending unit with upstream blade is connected, baffle plate plays water conservancy diversion and sealing function, and material is seamlessly transitted between adjacent two plasticizing sending unit.
Realize the device of above-mentioned matching process, be characterized in being arranged on the baffle plate between two plasticizing sending unit and offer material outlet; Baffle plate endoporus is concentric with cylindrical, and interior hole size is identical with the root diameter of plasticizing sending unit; Described material outlet and inner eccentric holes, eccentric throw is less than or equal to the eccentric throw between the stator of plasticizing sending unit and armature spindle, and material outlet cross section is a circular arc be connected with baffle plate inner hole smooth.
Further, according to the difference of material flow through position, on baffle plate, the eccentric throw of described material outlet circular arc and endoporus is less than or equal to the eccentric throw between stator and rotor, and described material outlet circular arc is less than the length of hemicycle.
Further, the material outlet position of adjacent two pieces of baffle plates is arranged about rotor center axisymmetrical in an extruder.
Compared with prior art, tool of the present invention has the following advantages:
1, structure is simple, and baffle plate plays the effect of sealing and water conservancy diversion simultaneously;
2, do not have dead angle completely, material is residual few;
3, plastify the residence time destribution of material in transport process evenly, improve plasticizing quality.
Accompanying drawing explanation
Fig. 1 is blade extruder A--A sectional view.
Fig. 2 is blade extruder B--B sectional view.
Fig. 3 is the structural representation of third gear plate 3.
Fig. 4 is the structural representation of the first baffle plate 1.
Fig. 5 is the C--C sectional view of the first baffle plate 1.
Fig. 6 is the structural representation of second baffle 2.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described further, but the scope of protection of present invention is not limited to the scope of embodiment statement.
embodiment 1
See Fig. 1, Fig. 2, blade extruder plastifies sending unit (II ~ VII) overlapped in series by blade feed unit I and some groups of blades and forms, adjacent two blade plasticizing sending unit rotors are contrary with the eccentric direction of stator, the size of the eccentric throw of rotor and stator can be inconsistent, and two adjacent groups blade plasticizing sending unit is formed by connecting by baffle plate.Because two adjacent groups blade unit eccentric direction is contrary, thus the position of the discharge gate of two groups of unit is about rotor center axisymmetrical.
Its plasticizing of blade extruder transports as volume conveying, and the baffle plate between two adjacent groups blade plasticizing sending unit plays sealing and water conservancy diversion.When rotor rotates, when the spatial volume that stator, rotor, blade and the baffle plate etc. that are plastified in sending unit by blade surround is changed from small to big, upstream blade unit includes material in, when this spatial volume from large to small time discharge material.The baffle plate of connection two adjacent blades plasticizing sending unit offers material outlet.Material outlet and inner eccentric holes, eccentric throw is less than or equal to the eccentric throw between stator and rotor, material outlet cross section is a circular arc be connected with baffle plate inner hole smooth, make material can smoothly transit to the space of baffle plate and stator and enter into downstream blade unit, realize the transition of material in adjacent two blade units.
As shown in Figure 3, baffle plate endoporus is concentric with cylindrical, diameter is identical with root diameter and offer material outlet.Material outlet be one section with the circular arc of inner eccentric holes, its eccentric throw is less than or equal to the eccentric throw between stator and rotor.When blade supply unit is 2 groups of concavo-convex relative blades, the material outlet of second baffle 2 is 1/4 circle, and radius is radius and the eccentric distance e sum that R, R are less than or equal to armature spindle, and other circular arc then seals.See Fig. 4, Fig. 5, when material enters into plasticizing sending unit II from blade feed unit I, material is not melting completely also, and transporting resistance is larger.Now the design of the material outlet of the first baffle plate 1 is become the contraction shape that flow area gradually changes from big to small, increase circulation area thus reduce flow resistance.See Fig. 6, in order to increase time of staying in material plasticizing transport process, improve plasticizing melting effect, be now symmetrical half circumference by the material outlet designed arc-shaped appearance of third gear plate 3, 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.Now material can produce backflow between upstream and downstream unit, improves plasticizing melting effect.Combined with some retable sending unit by the first different baffle plates 1, second baffle 2, third gear plate 3, realize the plastication and extrusion process of blade extruder.
Claims (2)
1. material matching process between blade extruder adjacent blades plasticizing sending unit, it is characterized in that, between the two blade plasticizing sending unit that eccentric direction is contrary, baffle plate is installed, baffle plate offers material outlet, the material outlet that this material outlet plastifies sending unit with upstream blade is connected, baffle plate plays water conservancy diversion and sealing function, and material is seamlessly transitted between adjacent two plasticizing sending unit; Be arranged on the baffle plate between two plasticizing sending unit and offer material outlet; Baffle plate endoporus is concentric with baffle plate cylindrical, and interior hole size is identical with the root diameter of plasticizing sending unit; Described material outlet and inner eccentric holes, eccentric throw is less than or equal to the eccentric throw between the stator of plasticizing sending unit and armature spindle, and material outlet cross section is a circular arc be connected with baffle plate inner hole smooth; On baffle plate, the eccentric throw of described material outlet circular arc and endoporus is less than or equal to the eccentric throw between stator and rotor, and described material outlet circular arc is less than the length of hemicycle.
2. material matching process between blade extruder adjacent blades plasticizing sending unit according to claim 1, is characterized in that the material outlet position of adjacent two pieces of baffle plates is arranged about rotor center axisymmetrical in an extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385143.XA CN102990898B (en) | 2012-10-12 | 2012-10-12 | Method and device for matching materials among adjacent blade plasticization transportation units of blade squeezer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385143.XA CN102990898B (en) | 2012-10-12 | 2012-10-12 | Method and device for matching materials among adjacent blade plasticization transportation units of blade squeezer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102990898A CN102990898A (en) | 2013-03-27 |
| CN102990898B true CN102990898B (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210385143.XA Expired - Fee Related CN102990898B (en) | 2012-10-12 | 2012-10-12 | Method and device for matching materials among adjacent blade plasticization transportation units of blade squeezer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102990898B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100496927C (en) * | 2008-01-25 | 2009-06-10 | 华南理工大学 | Polymer material plasticizing and transporting method and apparatus based on draft flowing deformation |
-
2012
- 2012-10-12 CN CN201210385143.XA patent/CN102990898B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100496927C (en) * | 2008-01-25 | 2009-06-10 | 华南理工大学 | Polymer material plasticizing and transporting method and apparatus based on draft flowing deformation |
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| Publication number | Publication date |
|---|---|
| CN102990898A (en) | 2013-03-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20191012 |