CN202147383U - PE (polyurethane) thick-wall pipe - Google Patents
PE (polyurethane) thick-wall pipe Download PDFInfo
- Publication number
- CN202147383U CN202147383U CN201120269470U CN201120269470U CN202147383U CN 202147383 U CN202147383 U CN 202147383U CN 201120269470 U CN201120269470 U CN 201120269470U CN 201120269470 U CN201120269470 U CN 201120269470U CN 202147383 U CN202147383 U CN 202147383U
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- thick
- pipe
- mould
- internal diameter
- wall
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Abstract
The utility model discloses a PE (polyurethane) thick-wall pipe, which comprises a die. The die gap of the die is 1-1.05 times of the thickness of a pipe billet, and the inner diameter of a sizing sleeve is 0.98-1 time of that of a nose die. Existing pipe extrusion technology is improved to form the PE thick-wall pipe. A large-bore pipe fitting made of the thick-wall pipe produced by the aid of the technology is stable and reliable in quality, conforms to plastic pipe design specifications, and is well received by users in practical application. As an assorted product of a PE plastic pipe, the PE thick-wall pipe has wide market application prospect and fills the blank of domestic large-bore PE thick-wall pipe billets.
Description
Technical field
The utility model relates to a kind of tubing production technology, is a kind of PE thick-wall tube specifically.
Background technology
In PE pipeline field, pipe fittings such as the main fingering orchid of used connecting tube, reducing, threeway, steel-plastic joint, ball valve, small-bore pipe fitting can be produced through Shooting Technique because itself is in light weight; And many products such as the pipe fitting of big specification such as flange, reducing, reducer tee, steel-plastic joint, ball valve are difficult to through the production of weldering system owing to complex structure, again because weight is big; As adopt Shooting Technique to produce; Then need the investment of huge injection-moulding device and mould, do not reach in the market demand under the situation of economic flow rate, very uneconomical; Technical also immature, all there is the shrinkage cavity problem that is difficult to overcome in the pipe fitting that now domestic some producer adopts Shooting Technique to produce the above bore of 500mm.
At present, the thickest of tubing extruding production line design is SDR11 (SDR is the ratio of a pipe diameter and wall thickness) standard series, and wall thickness still can't overcome greater than a lot of difficulties of tubing (as about PE heavy wall pipe SDR5) in production technology of SDR11 series.
The utility model content
The purpose of the utility model is exactly on the basis of existing tube extruding equipment and technology, and extruder mould and expressing technique are improved, make full use of simultaneously plastics machinability and PE thick-wall tube production technology.
The technical scheme of the utility model is:
A kind of PE thick-wall tube, described tubing comprises mould, and said mould mouth die clearance is 1-1.05 a times of pipe thickness, and the calibration sleeve internal diameter size is 0.98-1 a times of machine head port mould internal diameter.Preferably, said mould mouth die clearance is 1.05 times of pipe thickness, and the calibration sleeve internal diameter size is 0.99 times of machine head port mould internal diameter.
Described PE thick-wall tube; It is 1.05 times of calibration sleeve internal diameter that said mould also is included in gripper shoe cambered surface diameter near calibration sleeve; Last gripper shoe cambered surface diameter is 1.03 times of tube outer diameter; Intermediate support plate cambered surface size value changes between these two values step by step, and guarantees gripper shoe cambered surface bottom at grade.
The utility model beneficial effect is: PE thick-wall tube production technology is that existing tubing extruding technology is improved.The heavy caliber pipe fitting steady quality that the thick-wall tube that uses this technology to produce is made is reliable; Meet the plastic conduit design specification; In practical application, obtained user's favorable comment; As the auxiliary products of PE plastic pipe, have market application foreground widely, it is blank to have filled up domestic heavy caliber PE heavy wall pipe.
Description of drawings
Fig. 1 is the main technique flow chart of the utility model.
The specific embodiment
The exemplary embodiments that embodies the utility model characteristic and advantage will be described in detail in following explanation.Be understood that the utility model can have various variations on various embodiment, the scope of its neither disengaging the utility model, and explanation wherein and accompanying drawing be the usefulness of being used as explanation in itself, but not in order to restriction the utility model.
This PE thick-wall tube production technology is on the basis of existing PE tubing extruding production line, from the following aspects equipment and technology is improved respectively:
(1) improvement of mould
Because heavy wall pipe wall thickness is thicker,, should be not less than pipe thickness or big slightly by about 2～5% so mouthful die clearance is bigger than common tubing.Simultaneously, the calibration sleeve internal diameter size should or ratio mouth mould internal diameter slightly little about 1% formation with assurance vacuum consistent with the machine head port mould internal diameter.Near the gripper shoe cambered surface diameter of calibration sleeve 1.05 times of calibration sleeve internal diameter; Last gripper shoe cambered surface diameter is 1.03 times of tube outer diameter; Intermediate support plate cambered surface size value changes between these two values step by step, and guarantees gripper shoe cambered surface bottom at grade.
(2) improvement of cutting scheme
Since this technology can not the criterion of failure pipe production line integrality; The planet cutting saw is not made any change; When producing thick-walled pipe; Every production drive sleeve is interrupted produces one section light-wall pipe, on pipe production line, thick-walled pipe is cut into segment in advance, on horizontal saw mill, further cuts according to the pipe fitting processing request then.
(3) improvement of processing technology
In order to eliminate the uneven and minimizing tube wall internal stress of pipe thickness, tubing is extruded the melt temperature of processing and should about 150 degree, be extruded output and be controlled at the floor level that hauling machine allows, and is controlled at about 300kg/h like 125mm screw extruder output.
(A) equipment preheating: extrude production requirement by standard tubing machine barrel and die head are carried out preheating;
(B) select suitable mouth mould and calibration sleeve, the calibration sleeve internal diameter size should be consistent with the machine head port mould internal diameter or slightly littler by about 1% than mouthful mould internal diameter; The mouth die clearance is more equal or big slightly by about 2～5% than pipe thickness; The gripper shoe cambered surface diameter of calibration sleeve is 1.05 times of calibration sleeve internal diameter, and last gripper shoe cambered surface diameter is 1.03 times of tube outer diameter, and intermediate support plate cambered surface size value changes between these two values step by step, and guarantees gripper shoe cambered surface bottom at grade;
(C) adjustment of equipment such as hauling machine, cast-cutting saw, roll-over table is identical with the preparation of standard tubing.
(D) joint is made
Open extruder and extrude material base, the aging layer with specific purpose tool removal traction tube end surfaces inserts preheating in the material base with pipe end, rule of thumb confirms preheating time, and is good up to the joint welding.
(E) start
Start also improves extruded velocity to optimum yield gradually after setting the pipe substance.When material base gets into calibration sleeve, open vacuum tank water pump and vavuum pump, adjustment vacuum begins to produce the heavy wall pipe.
(F) ordinary production of heavy wall pipe
Production technology during heavy wall pipe ordinary production is according to the difference of thick-walled pipe specification and different, but technological temperature is basic identical.See the following form:
| Barrel zone temperature ℃ | Die head temperature ℃ | Vacuum tank temperature ℃ | Bosh temperature ℃ |
| 150～155 | 150～155 | 20～25 | 30～55 |
In normal productive process, tubing is every to be produced the 0.5m light-wall pipe at a distance from fixed length (decide according to needing) (wall thickness is 20～40mm), and carries out cut mark thin the locating of wall, is beneficial to the online cutting of thick-walled pipe.
(G) shut down
Produce 3.0～4.0m thin-wall pipes during shutdown, this is the traction of tubing for ease, simultaneously in order to guarantee that tubing cools off fully.Keeping the time of vacuum decides according to the length of vacuum tank.
Those skilled in the art should recognize change and the retouching of under the situation of scope that does not break away from the appended the utility model that claim disclosed of the utility model and spirit, being done, and all belong within the protection domain of claim of the utility model.
Claims (3)
1. PE thick-wall tube, it is characterized in that: described tubing comprises mould, said mould mouth die clearance be pipe thickness 1-1.05 doubly, the calibration sleeve internal diameter size be the machine head port mould internal diameter 0.98-1 doubly.
2. PE thick-wall tube according to claim 1 is characterized in that: described tubing comprises mould, and said mould mouth die clearance is 1.05 times of pipe thickness, and the calibration sleeve internal diameter size is 0.99 times of machine head port mould internal diameter.
3. PE thick-wall tube according to claim 1; It is characterized in that: it is 1.05 times of calibration sleeve internal diameter that said mould also is included in gripper shoe cambered surface diameter near calibration sleeve; Last gripper shoe cambered surface diameter is 1.03 times of tube outer diameter; Intermediate support plate cambered surface size value changes between these two values step by step, and guarantees gripper shoe cambered surface bottom at grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120269470U CN202147383U (en) | 2011-07-25 | 2011-07-25 | PE (polyurethane) thick-wall pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120269470U CN202147383U (en) | 2011-07-25 | 2011-07-25 | PE (polyurethane) thick-wall pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202147383U true CN202147383U (en) | 2012-02-22 |
Family
ID=45588457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120269470U Expired - Fee Related CN202147383U (en) | 2011-07-25 | 2011-07-25 | PE (polyurethane) thick-wall pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202147383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081647A (en) * | 2017-12-13 | 2018-05-29 | 贵州黔峰管业有限公司 | A kind of manufacturing process of PE feed pipes |
-
2011
- 2011-07-25 CN CN201120269470U patent/CN202147383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081647A (en) * | 2017-12-13 | 2018-05-29 | 贵州黔峰管业有限公司 | A kind of manufacturing process of PE feed pipes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20130725 |