CN2680444Y - Combined screw rod - Google Patents
Combined screw rod Download PDFInfo
- Publication number
- CN2680444Y CN2680444Y CNU2004200285084U CN200420028508U CN2680444Y CN 2680444 Y CN2680444 Y CN 2680444Y CN U2004200285084 U CNU2004200285084 U CN U2004200285084U CN 200420028508 U CN200420028508 U CN 200420028508U CN 2680444 Y CN2680444 Y CN 2680444Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- semi
- diameter
- equal
- circular arc
- 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
Links
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
- B29C48/507—Screws characterised by the material or their manufacturing process
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The utility model relates to an economical combined screw rod which can be manufactured rapidly, comprising at least one screw rod body(1), a pairs of semicircular arc sleeves(3) and a bearing barrel sleeve(2).
Description
Affiliated technical field
The utility model relates to technology and belongs to a kind of macromolecular material manufacturing or process equipment field, particularly a kind of assembled screw rod bar of the economy that can fast be made.
Background technology
Screw rod is a key components and parts in macromolecular material manufacturing or the processing and forming machinery, and it cooperates with machine barrel (screw sleeve), in conjunction with different geometries, can make or processing and forming goes out various macromolecular material product.
Owing to often differ or alter a great deal with the geometry of root screw rod, being difficult for maybe can not whole screw rod machined, people often adopt assembled screw rod, promptly, the section of similar and different geometry is machined to threaded block respectively, mediates piece, cutout or the like block, then they are made up on demand and be enclosed within on the screw rod bar, and rely on a screw head to screw in screw rod bar front end face, they are fixed tightly on the screw rod bar.And the afterbody of this screw rod bar has the section that one section ratio is with the bar portion larger diameter of each threaded block, after stoping each threaded block, move, bear the powerful axial force that the reach of screw rod when rotation material is brought, and with this axial force transmission to the power transmission shaft that links with screw rod.
In order to carry out this task in good condition, the footpath, the end that the diameter of the expanded diameter section of screw rod bar afterbody should little what threaded block, more advantageously this diameter is greater than the footpath, the end of threaded block.Thus, the size of drawing materials of a screw rod bar will be according to the diameter of its afterbody expanded diameter section.
Yet, it is inserted in the length of threaded block bar portion by the big or small what of the length of this expanded diameter section of what, and being machined into minor diameter from the major diameter of screw rod bar needs long machined man-hour, and waste of material is very big, especially the screw rod bar material is had relatively high expectations, and price is expensive.
German patent DE 3709798A1 discloses a kind of combined type extrusion screw rod, the expanded diameter section of this screw rod tail is replaced by the sub-assembly of a large diameter band screw lira, and first threaded block that contacts this sub-assembly will be connected with this combiner by its internal thread (screw spiral lamination).This connected mode complexity, and require that higher machined precision is arranged, improved manufacturing cost thus.
Summary of the invention
The purpose of this utility model is that the technical scheme by means of a kind of economy solves above-mentioned the deficiencies in the prior art, and a kind of technical scheme of the economic screw rod bar that can fast be made is provided.
The assembled screw rod bar that the utility model relates to comprises the screw rod shaft, a pair of semi-circular arc cover and a load jacket casing.
The technical scheme that the utility model provides, be according to the screw rod shaft, promptly, the diameter dimension of the bar portion section that is with each threaded block of prior art is drawn materials, at screw rod shaft afterbody (expanded diameter section of the prior art) around at least one groove of axle machining, the a pair of semi-circular arc cover of machined in addition with at least one semi-ring crown of roll wing, this protruding wing is consistent with the cross sectional shape of groove, this semi-circular arc cover and protruding wing thereof are joined identical with screw rod shaft afterbody and groove cunning thereof, and load jacket casing of machined, this load jacket casing is circular, its external diameter more than or equal to the footpath, the end of its head threaded block that pastes mutually, its large diameter is more than or equal to the external diameter of semi-circular arc cover, its little internal diameter is more than or equal to screw rod shaft diameter, less than semi-circular arc cover external diameter, it is inserted in from screw rod shaft head, pass the screw rod shaft before, the middle part is inserted in sliding two semi-circular arc that are fitted into screw rod shaft afterbody and is put.After stoping each threaded block, move, bear the powerful axial force that the reach of screw rod when rotation material is brought, and with this axial force transmission to the power transmission shaft that links with screw rod.
Description of drawings
Fig. 1 is the screw rod bar schematic diagram of prior art.
Fig. 2 is that related assembled screw rod bar and the partial schematic sectional view thereof of the utility model implemented in expression.
Among Fig. 1 to Fig. 2:
1. screw rod shaft
2. load jacket casing
3. semi-circular arc cover
4. protruding wing/groove, and cross sectional shape
5. the screw rod bar of prior art
B. protruding wing/groove width
The specific embodiment
The specific embodiment of the assembled screw rod bar that the utility model is related is described in detail as follows with reference to accompanying drawing:
With reference to Fig. 1:
The screw rod bar (5) of prior art, its afterbody major diameter ledge and screw rod shaft are one, threaded block (not shown) is inserted in from screw rod bar front end, pastes mutually with the protuberance office.The size of drawing materials of screw rod bar will be according to the diameter of its afterbody expanded diameter section.
With reference to Fig. 2:
The assembled screw rod bar that the utility model relates to comprises a screw rod shaft (1), an a pair of semi-circular arc cover (3) and a load jacket casing (2).
Screw rod shaft (1) afterbody is around two grooves of axle machining (4), a pair of semi-circular arc cover (3) interior Side machining two semi-ring crown of rolls wing (4), this protruding wing (4) is consistent with the cross sectional shape (4) of groove (4), this semi-circular arc cover (3) and protruding wing (4) thereof are joined identical with screw rod shaft (1) afterbody and groove (4) cunning thereof, load jacket casing (2) is circular, its external diameter more than or equal to the footpath, the end of its head threaded block (not shown) that pastes mutually, its large diameter is more than or equal to the external diameter of semi-circular arc cover (3), its little internal diameter more than or equal to screw rod shaft (1) diameter less than semi-circular arc cover (3) external diameter, it is inserted in from screw rod shaft (1) head, pass screw rod shaft (1) before, sliding being fitted on two semi-circular arc covers (3) of screw rod shaft (1) afterbody is inserted at the middle part.After stoping each threaded block (not shown), move, bear the powerful axial force that the reach of screw rod when rotation material is brought, and with this axial force transmission to the power transmission shaft (not shown) that links with screw rod.
Claims (5)
1. assembled screw rod bar, comprise at least one screw rod shaft (1), an a pair of semi-circular arc cover (3) and a load jacket casing (2), it is characterized in that: its screw rod shaft (1) tail surface has at least one around axle groove (4), its semi-circular arc cover (3) has at least one and the corresponding protruding wing of screw rod shaft (1) tail surface groove shape (4), its load jacket casing (2) is circular, its external diameter is more than or equal to the footpath, the end of head the threaded block that pastes mutually with it, its large diameter is more than or equal to the external diameter of semi-circular arc cover (3), and its little internal diameter is more than or equal to screw rod shaft (1) diameter, less than semi-circular arc cover (3) external diameter.
2. assembled screw rod bar according to claim 1 is characterized in that: its groove (4) width is more than or equal to 2 millimeters.
3. assembled screw rod bar according to claim 1 is characterized in that: its protruding wing (4) width is more than or equal to 2 millimeters.
4. assembled screw rod bar according to claim 1 is characterized in that: the cross sectional shape of its groove (4) is semicircle, arc, fan rectangle, rectangle, irregular arc or irregular shape.
5. assembled screw rod bar according to claim 1 is characterized in that: the cross sectional shape of its protruding wing (4) is semicircle, arc, fan rectangle, rectangle, irregular arc or irregular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200285084U CN2680444Y (en) | 2004-03-11 | 2004-03-11 | Combined screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200285084U CN2680444Y (en) | 2004-03-11 | 2004-03-11 | Combined screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2680444Y true CN2680444Y (en) | 2005-02-23 |
Family
ID=34607171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200285084U Expired - Fee Related CN2680444Y (en) | 2004-03-11 | 2004-03-11 | Combined screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2680444Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103282183A (en) * | 2011-03-31 | 2013-09-04 | 株式会社日本制钢所 | Screw shaft structure for double-shaft extruder |
-
2004
- 2004-03-11 CN CNU2004200285084U patent/CN2680444Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103282183A (en) * | 2011-03-31 | 2013-09-04 | 株式会社日本制钢所 | Screw shaft structure for double-shaft extruder |
| KR20140018208A (en) * | 2011-03-31 | 2014-02-12 | 가부시끼가이샤 니혼 세이꼬쇼 | Screw shaft structure for double-shaft extruder |
| CN103282183B (en) * | 2011-03-31 | 2015-08-12 | 株式会社日本制钢所 | The screw shaft structure of double screw extruder |
| KR102014244B1 (en) * | 2011-03-31 | 2019-08-26 | 가부시끼가이샤 니혼 세이꼬쇼 | Screw shaft structure for double-shaft extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |