CN1382935A - Technology for forming composite steel-plastic pipe and apparatus for forming its internal wall - Google Patents
Technology for forming composite steel-plastic pipe and apparatus for forming its internal wall Download PDFInfo
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- CN1382935A CN1382935A CN 02110321 CN02110321A CN1382935A CN 1382935 A CN1382935 A CN 1382935A CN 02110321 CN02110321 CN 02110321 CN 02110321 A CN02110321 A CN 02110321A CN 1382935 A CN1382935 A CN 1382935A
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Abstract
A technology for making composite steel-plastics pipe used to deliver gas or liquid includes coasting plastics on the inner surface of steel pipe with a novel apparatus, coating plastics on its outer surface with extruder, shaping, cooling and cutting. It is suitable for large-diameter composite steel-plastics pipe.
Description
Affiliated technical field
The present invention relates to the manufacturing process and the apparatus field of gas-liquid delivery pipe, the moulding process of a kind of steel-plastic composite pipe of more specifically saying so and inwall forming equipment thereof.
Background technique
Gas-liquid delivery pipe, the especially large diameter pipeline that generally uses mostly is to adopt steel pipe at present, and it is damaged that long-term use is easy to corrosion, and adopt steel-plastic composite pipe, can address this problem.But the manufacturing technology of steel-plastic composite pipe is very complicated, and is especially very difficult to the plastic-coated of inwall.The technology that has attempts plastic extruder is loaded onto right-angle handpiece, opening moulding inwall plastic tube before cold rolled steel pipe joint close, but when producing, be difficult to the wall thickness deviation of control base pipe, and with the argon arc welding technology steel pipe is welded because of it, very easily cause the welded tube opening, and plastic tube is melted, the also easy invar of the inner wall tube of making, the difference of moulding the thermal expansion factor of two kinds of materials makes the tubing layering, peel off, in addition owing to need to install plastic machine head, steel pipe full circle process quilt is cancelled, and it is not round steel pipe to occur, in, the defective of outer plastic tube wall thickness ununiformity, the speed of Sheng Chaning is also very slow simultaneously, is difficult to form large-scale steady production.
The model utility content
The technical problems to be solved in the utility model is, at the problem that exists in the above-described steel-plastic composite pipe production, a kind of new steel-plastic composite pipe production technology is provided, realizes the continuity of steel-plastic composite pipe, large-scale steady production, guarantee the steel-plastic composite pipe quality requirement simultaneously.
For solving the technological scheme that the technical problem proposed takes be, this steel-plastic composite pipe moulding process, be to utilize on the basis of existing cold tube rolling technological process, reequip production, its process characteristic is, at first steel band 1 enters cold rolling mill 2 and is rolled into steel pipe 3, and weld, shaping, in steel pipe 3 inside, carry out the inwall plastic-coated through inwall forming equipment 4 then, the while is in the outside of steel pipe 3, carry out the outer wall plastic-coated through outer co-extruding machine head 5, through calibration sleeve 6 sizings,, shear through cut-off machine 8 again and become a useful person then through 7 coolings of spray tank.
Described steel pipe 3 can be ratio-frequency welded tube or Spiral Steel Pipe.
Described welding process can be highfrequency welding or CO2 protection weldering.
The steel-plastic composite pipe inwall forming equipment that adopts in the production, mainly form by spreader 9, plastic extruder 10 and head 11, be characterized in, this equipment is provided with the pylon 12 that is fixed on the cold-rolling mill frame 16, one side on its top connects spreader 9, opposite side connects plastic extruder 10, the fixedly connected major diameter cover 13 in the bottom of pylon 12, the fixedly connected spiral head 11 of its front end, the fixedly connected flexible coolant jacket 14 of the front end of spiral head 11, major diameter cover 13 opening before steel pipe 3 joint closes stretches into steel pipe 3 inside.
Described elasticity coolant jacket 14 is provided with elastomer portion 15, and pastes mutually with steel pipe 3 inwalls.
Described elastomer portion 15 can adopt inside to be connected with compressed-air actuated long balloons 17, it is outside with helical spring 18 lock rings, the affixed closed airbag 19 of the front end of long balloons 17, long balloons 17 is fixedlyed connected with spiral head 11 by positioning rod 20 with closed airbag 19.
Utilize such production technology and equipment, owing to be the plastic-coated that after steel pipe welds, carries out inside and outside wall again, avoided the destruction of welding fully to tube wall, the elasticity coolant jacket 14 that adopts in the steel-plastic composite pipe inwall forming equipment can guarantee the circularity and the smoothness of inner wall tube, and make wall thickness even, calibration sleeve 6 can guarantee the circularity and the smoothness of outer wall pipe, so just can make the production of steel-plastic composite pipe have continuity and stability, and forms mass production.
Description of drawings
The process flow diagram of Fig. 1-first embodiment of the invention
The plan view of Fig. 2-Fig. 1
The process flow diagram of Fig. 3-second embodiment of the invention
The plan view of Fig. 4-Fig. 2
The structural representation of steel-plastic composite pipe inwall forming equipment among Fig. 5-embodiments of the invention 1 or the embodiment 2
The side view of Fig. 6-Fig. 5
The structural representation of elasticity coolant jacket 14 among Fig. 7-Fig. 5
The schematic representation of the steel-plastic composite pipe inwall molding procedure in Fig. 8-embodiment of the invention 1 or 2
Embodiment
Provide embodiments of the invention below in conjunction with accompanying drawing, be used for further specifying technical solution.
Embodiment 1, with reference to figure 1,2,5,6,7,8.Find out that by Fig. 1,2 this steel-plastic composite pipe moulding process is to utilize on the basis of existing cold tube rolling technological process, reequip production, its process characteristic is that at first steel band 1 enters cold rolling mill 2 and is rolled into steel pipe 3, and weld, shaping, in steel pipe 3 inside, carry out the inwall plastic-coated through inwall forming equipment 4 then, the while is in the outside of steel pipe 3, carry out the outer wall plastic-coated through outer co-extruding machine head 5, through calibration sleeve 6 sizings,, shear through cut-off machine 8 again and become a useful person then through 7 coolings of spray tank.Described steel pipe 3 is ratio-frequency welded tubes, adopts highfrequency welding that it is welded.
The steel-plastic composite pipe inwall forming equipment that adopts in the production, shown in Fig. 5,6, be provided with the pylon 12 that is fixed on the cold-rolling mill frame 16, one side on its top connects spreader 9, opposite side connects plastic extruder 10, the fixedly connected major diameter cover 13 in the bottom of pylon 12, the fixedly connected spiral head 11 of its front end, the fixedly connected flexible coolant jacket 14 of the front end of spiral head 11, major diameter cover 13 opening before steel pipe 3 joint closes stretches into steel pipe 3 inside.Described elasticity coolant jacket 14 as shown in Figure 7, for inside is connected with compressed-air actuated long balloons 17, it is outside with helical spring 18 lock rings, the affixed closed airbag 19 of the front end of long balloons 17, and long balloons 17 is fixedlyed connected with spiral head 11 by positioning rod 20 with closed airbag 19.
In the production, steel pipe reaches the circularity of standard through welding and shaping complete routine, and the while has guaranteed that also inside and outside wall moulds the circularity of pipe.When carrying out the inwall plastic-coated, spreader 9 carries out gluing (with reference to figure 8) by 22 pairs of steel pipe 3 inwalls of gluing runner, simultaneously, plastic extruder 10 carries out plastic-coated by 23 pairs of steel pipe 3 inwalls of plastic-coated runner, carry out shaping through elasticity coolant jacket 14 then, cooling, wherein the resilient outer surface of the long balloons 17 of elasticity coolant jacket 14 and closed airbag 19 relies on the pressure of its internal compression air, carry out floating to inwall, and use the cooling water in the cooling water channel that produces by helical spring 18 lock ring long balloonses 17, inwall is cooled off, simultaneously, because the plugging action of closed airbag 19, cooling water produces certain pressure to long balloons 17 and inwall, and cooling water will play certain lubrication, makes the surperficial luminosity of inwall further perfect.Outer wall carries out the outer wall plastic-coated through outer co-extruding machine head 5, carries out sizing and polishing by calibration sleeve 6 then, through 7 coolings of spray tank, shears through cut-off machine 8 and can produce high-level steel-plastic composite pipe.
The steel-plastic composite pipe inwall forming equipment that adopts in the production, its structure is identical with the steel-plastic composite pipe inwall forming equipment structure described in the embodiment 1, wherein major diameter cover 13 also is that the opening before Spiral Steel Pipe 3 joint closes stretches into steel pipe 3 inside, and major diameter cover 13 is overlapped with the medial axis of shaping steel tube 3.
By production process and principle similarly to Example 1, can produce the steel-plastic composite pipe of standard.Adopt so bigbore spiral welded steel pipe of explained hereafter particularly suitable.
Claims (6)
1, a kind of steel-plastic composite pipe moulding process, it is characterized in that, at first steel band (1) enters cold rolling mill (2) and is rolled into steel pipe (3), and weld, shaping, then in steel pipe (3) inside, carry out the inwall plastic-coated through inwall forming equipment (4), in the outside of steel pipe (3), carry out the outer wall plastic-coated through outer co-extruding machine head (5), simultaneously then through calibration sleeve (6) sizing, through spray tank (7) cooling, shear through cut-off machine (8) again and become a useful person.
2, steel-plastic composite pipe moulding process according to claim 1 is characterized in that, described steel pipe (3) can be ratio-frequency welded tube or Spiral Steel Pipe.
3, steel-plastic composite pipe moulding process according to claim 1 is characterized in that, described welding process can be highfrequency welding or CO
2The protection weldering.
4, steel-plastic composite pipe inwall forming equipment, mainly by spreader (9), plastic extruder (10) and head (11) are formed, it is characterized in that, this equipment is provided with the pylon (12) that is fixed on the cold-rolling mill frame (16), one side on its top connects spreader (9), opposite side connects plastic extruder (10), the fixedly connected major diameter cover in the bottom of pylon (12) (13), the fixedly connected spiral head of its front end (11), the fixedly connected flexible coolant jacket of the front end of spiral head (11) (14), major diameter cover (13) stretches into steel pipe (3) inside from the preceding opening of steel pipe (3) joint close.
5, steel-plastic composite pipe inwall forming equipment according to claim 1 is characterized in that, described elasticity coolant jacket (14) is provided with elastomer portion (15), and pastes mutually with steel pipe (3) inwall.
6, steel-plastic composite pipe inwall forming equipment according to claim 5, it is characterized in that, described elastomer portion (15) is compressed-air actuated long balloons (17) for inside is connected with, it is outside with helical spring (18) lock ring, the affixed closed airbag of the front end of long balloons (17) (19), long balloons (17) is fixedlyed connected with spiral head (11) by positioning rod (20) with closed airbag (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021103216A CN1192177C (en) | 2002-04-30 | 2002-04-30 | Technology for forming composite steel-plastic pipe and apparatus for forming its internal wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021103216A CN1192177C (en) | 2002-04-30 | 2002-04-30 | Technology for forming composite steel-plastic pipe and apparatus for forming its internal wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1382935A true CN1382935A (en) | 2002-12-04 |
| CN1192177C CN1192177C (en) | 2005-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021103216A Expired - Fee Related CN1192177C (en) | 2002-04-30 | 2002-04-30 | Technology for forming composite steel-plastic pipe and apparatus for forming its internal wall |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777707A (en) * | 2012-07-10 | 2012-11-14 | 浙江双林塑料机械有限公司 | Large-caliber spiral welding steel plastic composite pressure pipe and manufacturing method thereof |
| CN103802341A (en) * | 2012-11-14 | 2014-05-21 | 国塑机械(上海)有限公司 | Winding-welding corrugated steel-plastic pipe equipment and production technology |
| CN103802371A (en) * | 2014-02-24 | 2014-05-21 | 芜湖鑫力管道技术有限公司 | Environmental-protection beautiful composite high-frequency welding pipe and production method thereof |
| CN103921078A (en) * | 2014-05-07 | 2014-07-16 | 张家港市维达纺织机械有限公司 | Continuous production device of plastic coated stainless steel pipeline |
| CN107471587A (en) * | 2017-08-10 | 2017-12-15 | 新兴铸管股份有限公司 | A kind of steel-plastic composite pressure pipe co-extrusion is bonded compound stable-pressure device |
-
2002
- 2002-04-30 CN CNB021103216A patent/CN1192177C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777707A (en) * | 2012-07-10 | 2012-11-14 | 浙江双林塑料机械有限公司 | Large-caliber spiral welding steel plastic composite pressure pipe and manufacturing method thereof |
| CN103802341A (en) * | 2012-11-14 | 2014-05-21 | 国塑机械(上海)有限公司 | Winding-welding corrugated steel-plastic pipe equipment and production technology |
| CN103802371A (en) * | 2014-02-24 | 2014-05-21 | 芜湖鑫力管道技术有限公司 | Environmental-protection beautiful composite high-frequency welding pipe and production method thereof |
| CN103921078A (en) * | 2014-05-07 | 2014-07-16 | 张家港市维达纺织机械有限公司 | Continuous production device of plastic coated stainless steel pipeline |
| CN107471587A (en) * | 2017-08-10 | 2017-12-15 | 新兴铸管股份有限公司 | A kind of steel-plastic composite pressure pipe co-extrusion is bonded compound stable-pressure device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1192177C (en) | 2005-03-09 |
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