CN202623250U - Screw for twin-screw extruders - Google Patents
Screw for twin-screw extruders Download PDFInfo
- Publication number
- CN202623250U CN202623250U CN2012202877014U CN201220287701U CN202623250U CN 202623250 U CN202623250 U CN 202623250U CN 2012202877014 U CN2012202877014 U CN 2012202877014U CN 201220287701 U CN201220287701 U CN 201220287701U CN 202623250 U CN202623250 U CN 202623250U
- Authority
- CN
- China
- Prior art keywords
- kneading
- piece
- pieces
- mandrel
- section
- 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
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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
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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
-
- 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
- B29C48/54—Screws with additional forward-feeding elements
-
- 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
- B29C48/55—Screws having reverse-feeding elements
-
- 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
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a screw for twin-screw extruders. The screw comprises a mandrel, one end of the mandrel is provided with a spline, the other end of the mandrel is provided with a locking screw, the mandrel between the spline and the locking screw is provided with a thread bushing, the thread bushing is composed of a first thread bushing and a second thread bushing, the first thread bushing is close to one end of the locking screw, the second thread bushing is close to one end of the spline, and a plurality of kneading block assemblies are sequentially arranged on the mandrel between the first thread bushing and the second thread bushing; the kneading block assemblies are connected with the first thread bushing through reverse thread blocks; and the thread bushing among the kneading block assemblies is provided with a side feed inlet. According to the scheme, products extruded by using the screw extruder are better in plasticizing effect, more stable in product performance, and better in product appearance.
Description
Technical field
The utility model is located at the extruder apparatus field, relates in particular to a kind of double screw extruder and uses screw rod.
Background technology
Screw extruder is widely used in various fields as the manufacturing of macromolecular material and the visual plant of processing and forming, therefore is applicable to that the extruder of different aspect and product is of a great variety.Extruder screw is mediated piece and generally all is used on the twin-screw, when twin-screw rotates in barrel in the same way, drives and mediates the piece rotation, and whether the gap between the two kneading pieces is even, directly influences the melting effect of powdery paints.
But existing extruder screw is divided into transmission shaft cervical part of esophagus, feeding section, mixing section and extruding zone mostly; In the screw rod commonly used; Use screw rod and the junction of mediating piece is screw thread in the same way, and the combination angle of mediating between the piece is less, normally 56 °, 56 ° combinations; 60 °, 4 °, 56 ° combinations, 45 °, 5 °, 56 ° combinations; When producing, because problem such as rotary speed is very fast, and the plasticizing effect that extruded product can occur is relatively poor, and performance of products is relatively poor, and product mass color effect is bad.
Therefore, how addressing the above problem, is the content that the utility model will be studied.
Summary of the invention
The utility model provides a kind of double screw extruder to use screw rod, its objective is poor, the low apparent bad problem of product that reaches of properties of product of product plasticizing effect that existing screw rod makes that solves.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of double screw extruder is used screw rod, and said screw rod comprises mandrel, is provided with spline at an end of mandrel; The other end is established lock screw; On the mandrel between spline and the lock screw, be provided with thread bush, said thread bush is provided with several and mediates pieces combination by forming near first thread bush of lock screw one end with near second thread bush of spline one end, on the mandrel between said first thread bush and second thread bush, being arranged in order; Be connected through the reverse thread piece between the combination of said kneading piece and said first thread bush; Thread bush is provided with the side spout between said several kneading piece combinations.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described several are mediated pieces and are combined as four, are made as the A section successively along the mass transport direction and mediate that the piece combination is mediated in piece combination, B section, the C section mediates the piece combination and the D section is mediated the piece combination; The kneading piece combination of said A section is followed successively by reverse thread piece, 90 ° of kneading pieces, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of B section is followed successively by 60 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of C section is followed successively by 45 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of D section is followed successively by 45 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces.
2, in the such scheme, said kneading piece combination is positioned at the keyway on the said mandrel.
3, in the such scheme, be provided with mixing groove between the said adjacent kneading piece.
4, in the such scheme, the width of said each mixing groove is identical.
5, in the such scheme, its edge curve shape of said kneading piece is oval, and the center has a gear shape mandrel trepanning, and the curve at transverse two ends and radius initial point do not overlap with the center of trepanning.
6, in the such scheme, said plasticizing is meant that plastics reach flow regime and have good plastic overall process through heating in barrel.
7, in the such scheme, said kneading piece thickness refers to and is belonging to the thickness on the in-plane perpendicular to mediating piece.
Because the technique scheme utilization, the utility model compared with prior art has advantage:
1, because the utility model adopts the reverse thread piece to be connected in kneading piece and thread bush junction; And the angle of mediating piece is strengthened, and stop product successively, make that entry time, speed and the temperature of product are all controlled preferably; Make the product plasticizing more even; Performance is stronger, and makes that its surface of product that processes is more smooth, and appearance is better.
2, because the utility model through the position of adjustment reverse thread piece and the angle of mediating piece, has not only been realized function mixing or reaction, be to mix more evenly, stir more thoroughly, finally make properties of product stability better, plasticity is better.
3, the utility model is simple in structure, and is convenient, practicality.
Description of drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is used for the utility model and is mediated the block structure sketch map.
In the above accompanying drawing: 1, mandrel; 2, spline; 3, lock screw; 4, thread bush; 6, several mediate the piece combination; 7, side spout; 8, a gear shape mandrel trepanning; 9, reverse thread; 10, mixing groove; 41, first thread bush; 42, second thread bush.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment:
Show like Fig. 1～2; A kind of double screw extruder is used screw rod, and said screw rod comprises mandrel 1, is provided with spline 2 at an end of mandrel 1; The other end is established lock screw 3; On the mandrel 1 between spline 2 and the lock screw 3, be provided with thread bush 4, said thread bush 4 is provided with several and mediates pieces combination 6 by forming near first thread bush 41 of lock screw 3 one ends with near second thread bush 42 of spline 2 one ends, on the mandrel 1 between said first thread bush 41 and second thread bush 42, being arranged in order; Be connected through reverse thread 9 between the combination 6 of said kneading piece and said first thread bush 41; Thread bush is provided with side spout 7 between said several kneading piece combinations 6.
It is four that described several are mediated pieces combination 6, is made as the A section successively along the mass transport direction and mediates that the piece combination is mediated in piece combination, B section, the C section mediates the piece combination and the D section is mediated the piece combination; The kneading piece combination of said A section is followed successively by reverse thread piece, 90 ° of kneading pieces, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of B section is followed successively by 60 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of C section is followed successively by 45 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of D section is followed successively by 45 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces.
The keyway that said kneading piece combination 6 is positioned on the said mandrel 1.
Be provided with mixing groove 10 between the said adjacent kneading piece.
The width of said each mixing groove 10 is identical.
Its edge curve shape of said kneading piece is oval, and the center has a gear shape mandrel trepanning 8, and the curve at transverse two ends and radius initial point do not overlap with the center of trepanning.
The utility model adopts the reverse thread piece to be connected in kneading piece and thread bush junction; And the angle of mediating piece is strengthened, and stop product successively, make that entry time, speed and the temperature of product are all controlled preferably; Make the product plasticizing more even; Performance is stronger, and makes that its surface of product that processes is more smooth, and appearance is better.
Because the utility model through the position and the angle of mediating piece of adjustment reverse thread piece, has not only been realized function mixing or reaction, be to mix more evenly, stir more thoroughly, finally make properties of product stability better, plasticity is better.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model.
Claims (6)
1. a double screw extruder is used screw rod; Said screw rod comprises mandrel (1); End at mandrel (1) is provided with spline (2); The other end is established lock screw (3); On the mandrel (1) between spline (2) and the lock screw (3), be provided with thread bush (4), it is characterized in that: said thread bush (4) is provided with several and mediates pieces combinations (6) by forming near first thread bush (41) of lock screw (3) one ends with near second thread bush (42) of spline (2) one ends, on the mandrel (1) between said first thread bush (41) and second thread bush (42), being arranged in order; Be connected through reverse thread piece (9) between said kneading piece combination (6) and said first thread bush (41); Thread bush is provided with side spout (7) between said several kneading piece combinations (6).
2. double screw extruder according to claim 1 is used screw rod; It is characterized in that: it is four that described several are mediated pieces combinations (6), is made as the A section successively along the mass transport direction and mediates that the piece combination is mediated in piece combination, B section, the C section mediates the piece combination and the D section is mediated the piece combination; The kneading piece combination of said A section is followed successively by reverse thread piece, 90 ° of kneading pieces, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of B section is followed successively by 60 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of C section is followed successively by 45 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces; The kneading piece combination of D section is followed successively by 45 ° and mediates piece, 4 ° of kneading pieces, 56 ° of kneading pieces.
3. double screw extruder according to claim 1 is used screw rod, it is characterized in that: said kneading piece combination (6) is positioned at the keyway on the said mandrel (1).
4. double screw extruder according to claim 1 is used screw rod, it is characterized in that: be provided with mixing groove (10) between the said adjacent kneading piece.
5. double screw extruder according to claim 4 is used screw rod, it is characterized in that: the width of said each mixing groove (10) is identical.
6. double screw extruder according to claim 1 is used screw rod; It is characterized in that: its edge curve shape of said kneading piece is for oval; The center has a gear shape mandrel trepanning (8), and the curve at transverse two ends and radius initial point do not overlap with the center of trepanning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202877014U CN202623250U (en) | 2012-06-19 | 2012-06-19 | Screw for twin-screw extruders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202877014U CN202623250U (en) | 2012-06-19 | 2012-06-19 | Screw for twin-screw extruders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202623250U true CN202623250U (en) | 2012-12-26 |
Family
ID=47376489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202877014U Expired - Fee Related CN202623250U (en) | 2012-06-19 | 2012-06-19 | Screw for twin-screw extruders |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202623250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773990A (en) * | 2012-06-19 | 2012-11-14 | 苏州博云塑业有限公司 | Screw for double-screw extruder |
-
2012
- 2012-06-19 CN CN2012202877014U patent/CN202623250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773990A (en) * | 2012-06-19 | 2012-11-14 | 苏州博云塑业有限公司 | Screw for double-screw extruder |
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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: 20121226 Termination date: 20150619 |
|
| EXPY | Termination of patent right or utility model |