CN202088436U - Screw special for polyvinyl chloride (PVC) cold bending tube extruder - Google Patents
Screw special for polyvinyl chloride (PVC) cold bending tube extruder Download PDFInfo
- Publication number
- CN202088436U CN202088436U CN2011200937815U CN201120093781U CN202088436U CN 202088436 U CN202088436 U CN 202088436U CN 2011200937815 U CN2011200937815 U CN 2011200937815U CN 201120093781 U CN201120093781 U CN 201120093781U CN 202088436 U CN202088436 U CN 202088436U
- Authority
- CN
- China
- Prior art keywords
- pvc
- screw
- feed back
- cold bending
- bending tube
- 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 - Lifetime
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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
- B29C48/585—Screws provided with gears interacting with the flow
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a screw, in particular to a screw special for a polyvinyl chloride (PVC) cold bending tube extruder. A plasticizing section is arranged on the screw, and a feed back chute is arranged on the screw edge of the plasticizing section. The length Z of the plasticizing section is from 130mm to 150mm, the width D of the feed back chute is from 20mm to 22mm, and the distance between the bottom of the feed back chute and the bottom of the screw edge is from 4mm to 5mm. The preferable length Z of the plasticizing section is 140mm, and the preferable width D of the feed back chute is 20mm. When tubes are produced by the screw special for the PVC cold bending tube extruder, even though materials are small, a part of materials can be sent back through the feed back chute and mixed with the next sent materials so as to achieve the purpose of being fully plasticized. The screw special for the PVC cold bending tube extruder can guarantee the load stability of a main motor and ensures the extruded materials to be fully plasticized, thereby guaranteeing the density and stability of produced tubes and ensuring the tube quality to be stable.
Description
Technical field
The utility model relates to a kind of screw rod, particularly a kind of PVC clod wash pipe extruder bolt special.
Background technology
Screw rod is installed in the machine barrel of extruder, its fluxing zone length of screw rod of using at present is 80mm, the feed chute width is 16mm, and the bottom of feed chute is 10mm to the distance of spiral shell rib bottom, and such screw-rod structure makes material be easy to be transferred away from the bottom of feed chute.When material is a little less, just there is not feed back to come, so can not plastify at all; When material was many, screw rod can not bear too big load (because screw-rod structure Φ 45-Φ 97, Φ 55-Φ 110, Φ 65-Φ 132, Φ 80-Φ 156 these models of China's use at present all are the hypercone screw rod, very sensitive to load) again.So be difficult to the stability of main control system electric current (load), cause extruding pipe material unstable and influence quality, make the user product in use often be arranged, also have the deliquescing in summer, the problem that becomes fragile winter by curved situation of breaking.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of density and stability that had both guaranteed to produce tubing is provided, has also guaranteed the PVC clod wash pipe extruder bolt special that pipe workpiece quality is stable, solved above-mentioned problems of the prior art.
The technical scheme that solves the problems of the technologies described above is: a kind of PVC clod wash pipe extruder bolt special, screw rod is provided with fluxing zone, have feed chute on the spiral shell rib of fluxing zone, described fluxing zone length Z is 130～150mm, the width D of feed chute is 20～22mm, and the bottom of feed chute is 4～5mm to the distance of spiral shell rib bottom.
Described fluxing zone length Z is 140mm, and the width D of feed chute is 20mm.
The utility model is at the deficiencies in the prior art, by changing the parameter of spiro rod plasticizing section, has improved the performance of PVC clod wash pipe.The utility model spiro rod plasticizing segment length Z is 130～150mm, and the width D of feed chute is 20～22mm, and the bottom of feed chute is 4～5mm to the distance of spiral shell rib bottom, and preferred fluxing zone length Z is 140mm, and the width D of feed chute is 20mm.Like this, more after a little while, can guarantee that also some material is not sent by feed chute at material, again with the material of sending here later mixing and reach the purpose of abundant plasticizing.Both guarantee the load stability of main motor, and guaranteed that again the material of extruding is fully plasticizing, thereby guaranteed to produce the density and the stability of tubing, also guaranteed the stable of pipe workpiece quality.The PVC clod wash pipe that adopts the utility model to squeeze out can reach best requirement in seasonal resistance to compression (degree of ring just), makes the clod wash pipe in not deliquescing in summer, and do not become fragile winter.
Below, the technical characterictic to the PVC clod wash pipe extruder bolt special of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings
Fig. 1～Fig. 3: the PVC clod wash pipe extruder bolt special structural representation of the utility model.
Fig. 1: front view.
The B of Fig. 2: Fig. 1 is to view (amplification).
Fig. 3: feed chute structural representation (amplification).
Among the figure: 1-spiral shell rib, 2-feed chute.
The specific embodiment
Embodiment one:
A kind of PVC clod wash pipe extruder bolt special is (referring to Fig. 1～Fig. 3), screw rod is provided with fluxing zone, has feed chute 2 on the spiral shell rib 1 of fluxing zone, and described fluxing zone length Z is 140mm, the width D of feed chute is 20mm, and the bottom of feed chute is 4～5mm to the distance of spiral shell rib bottom.By the change of screw rod parameter, the product P VC clod wash pipe that squeezes out has reached and has adapted to the performance of using various seasons, and don't needs to change original installation method.
As a kind of conversion of present embodiment, the adjustment that the fluxing zone length Z on the described screw rod and the width D of feed chute can be suitable, the value of general Z is 130～150mm, the value of D is 20～22mm.
Claims (2)
1. PVC clod wash pipe extruder bolt special, screw rod is provided with fluxing zone, has feed chute on the spiral shell rib of fluxing zone, it is characterized in that: described fluxing zone length Z is 130～150mm, the width D of feed chute is 20～22mm, and the bottom of feed chute is 4～5mm to the distance of spiral shell rib bottom.
2. PVC clod wash pipe extruder bolt special according to claim 1, it is characterized in that: described fluxing zone length Z is 140mm, and the width D of feed chute is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200937815U CN202088436U (en) | 2011-04-01 | 2011-04-01 | Screw special for polyvinyl chloride (PVC) cold bending tube extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200937815U CN202088436U (en) | 2011-04-01 | 2011-04-01 | Screw special for polyvinyl chloride (PVC) cold bending tube extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202088436U true CN202088436U (en) | 2011-12-28 |
Family
ID=45363525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200937815U Expired - Lifetime CN202088436U (en) | 2011-04-01 | 2011-04-01 | Screw special for polyvinyl chloride (PVC) cold bending tube extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202088436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057083A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | High polymer material eccentricity spiral stirring type compulsory feeding method and device thereof |
-
2011
- 2011-04-01 CN CN2011200937815U patent/CN202088436U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057083A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | High polymer material eccentricity spiral stirring type compulsory feeding method and device thereof |
| CN103057083B (en) * | 2012-12-20 | 2015-07-01 | 华南理工大学 | High polymer material eccentricity spiral stirring type compulsory feeding method and device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |