CN1857816A - Convex ring extruding method and machine for composite steel-plastic pipe - Google Patents
Convex ring extruding method and machine for composite steel-plastic pipe Download PDFInfo
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- CN1857816A CN1857816A CN 200610051780 CN200610051780A CN1857816A CN 1857816 A CN1857816 A CN 1857816A CN 200610051780 CN200610051780 CN 200610051780 CN 200610051780 A CN200610051780 A CN 200610051780A CN 1857816 A CN1857816 A CN 1857816A
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Abstract
The convex ring extruding machine for composite steel-plastic pipe has a casing comprising outer cylinder, front cylinder cap and back cylinder cap; a movable mold inside the cavity of the casing, a thrust cylinder piston connected to the movable mold and inside the inner cylinder, a ring piston set between the inner cylinder and the outer cylinder, a die block fixing block fitted movably to the front end of the ring piston, a fixed die connected to the die block fixing block; and a repositioning spring in the die block fixing block. On the back cylinder cap, there are thrust cylinder oil inlet pipe, thrust cylinder oil returning pipe and ring cylinder oil inlet pipe; and on the outer cylinder, there is ring cylinder oil returning pipe. The method of producing composite steel-plastic pipe with the extruding machine is also provided.
Description
Technical field
The present invention relates to a kind of technology and supporting pipe fitting of being connected between the connection and steel-plastic composite pressure pipe and other pipeline and pipe fitting between the steel-plastic composite pressure pipe of being used for, be mainly used in the supply and the discharging of fluid, belong to pipe connections and make the field.
Background technology
The five-layer structure steel-plastic composite pressure pipe is to be the intermediate layer with the butt welding steel pipe, ectonexine is polyolefin plastics, adopt hot melt adhesive special, be composited by extruding forming method, comprise the novel tube of five-layer structures such as inner plastic, hot melt adhesive special, steel layer, hot melt adhesive special, outer layer plastic.The five-layer structure steel-plastics composite pipe, not only have steel pipe pressure-bearing height, intensity is good, rigidity is big, shock resistance, thermal coefficient of expansion is little and corrosion-resistant, amount is light, cleaning is nontoxic, fluid resistance the is little characteristics of plastic tube, and, have some unique advantages such as circularity height, air-tightness are good, impermeabilisation, noise is low, heat preservation and insulation good, not only insulate but also be easy to survey, the optimum performance price compares again owing to plastic tube and metal tube are carried out perfectly compound.Steel-plastic composite pressure pipe has clear superiorities such as lighter weight, cheap cost, good mechanical performance and good antiseptic property, be suitable for carrying at the fluid in fields such as urban construction water supply, combustion gas, blowdown, chemical industry, oil, mining industry, pharmacy, agricultural irrigation, be used for replacing the energy consumption height, easily get rusty, traditional piping materials such as fouling, life-span are short, the cast tube of ship bulky, steel pipe, application prospect is very wide.
Because the five-layer structure steel-plastic composite pressure pipe is as bearing course with thin-wall steel tube, the ectonexine plastics are anticorrosive coat, each layer is thin-wall construction, common connected mode is inapplicable on steel-plastic composite pressure pipe, therefore whether its interconnection technique is suitable for reliable, whether pipe fitting with low cost, be easy to make, and determined the whether success of popularization of this novel tube.Connected mode between the existing steel-plastic composite pressure pipe and connecting tube can be described as of a great variety, multifarious, interface principle mainly contains the differential formula, card is pressed (draw-in groove) formula, nut formula, buried multiple connected modes such as ground spigot-and-socket, hot melten type, but also exist pipe fitting cost height, anti-pull-out force low, reduce overcurrent bore, various problems such as not quick detachable.Owing on connected mode and pipe fitting production and cost, exist all unsatisfactory problems, thereby promoting the use of of steel-plastic composite pressure pipe be greatly limited.
Technical scheme
The present invention is in order to solve the little technical problem of the anti-pull-out force of pipe fitting interface that steel-plastic composite pressure pipe forms because of the pipe fitting defective in promoting the use of process, and the steel-plastics composite pipe bulge loop pressing method and the extruder of design.
Technical scheme of the present invention is: a kind of steel-plastics composite pipe bulge loop pressing method and extruder are provided, described extruder has adopted the hydraulic technique principle, by extruder extruding steel-plastic composite pressure pipe port, make steel-plastic composite pressure pipe produce a specific bulge loop at port, and this bulge loop cooperated with custom-designed connecting tube, being relied on for connecting tube provides pulling force by the tubing bulge loop, is sealing surface with the pipe end plane, by connecting tube steel-plastic composite pressure pipe is interconnected.On small-bore steel-plastic composite pressure pipe, adopt nut formula connecting tube, and adopt the flange form connecting tube on the large-diameter steel plastic composite pressure pipe.
Provide a kind of steel-plastics composite pipe bulge loop extruder according to such scheme, it connects and composes the extruder housing by outer cylinder and front end housing, back cylinder cover, dynamic model in the cavity volume of extruder housing is connected with thrust cylinder piston, thrust cylinder piston is contained in the inner cylinder tube, be provided with annular cylinder piston between inner cylinder tube and the outer cylinder, annular cylinder piston nose cooperates with the oblique activity of module fixed block, and the module fixed block is connected with fixed die; Be provided with return spring between the module fixed block; Described back cylinder cover is provided with thrust cylinder oil inlet pipe, thrust cylinder oil return pipe, annular cylinder oil inlet pipe, and annular cylinder oil return pipe is arranged on the outer cylinder.
Aforesaid steel-plastics composite pipe bulge loop extruder is characterized in that: described fixed die connects by shackle and fixed die connecting bolt between the module fixed block.
Aforesaid steel-plastics composite pipe bulge loop extruder is characterized in that: be connected with trapezoidal thread between described dynamic model and the thrust cylinder piston.
Aforesaid steel-plastics composite pipe bulge loop extruder is characterized in that: described fixed die and module fixed block are the many valve structures of ring-type.
A kind of steel-plastics composite pipe bulge loop pressing method that adopts above-mentioned extruder is provided below, and it is finished by following steps:
(1) supporting dynamic model and fixed die are installed in the extruder housing;
(2) processed steel-plastics composite pipe is placed in the extruder by the perforate on the front end housing, and make the port of processed steel-plastics composite pipe and the dynamic model no gap of colliding;
(3) open annular cylinder oil pump process switch, inject hydraulic oil from annular cylinder oil inlet pipe, make annular cylinder piston forward cylinder cap direction motion, annular cylinder piston produces radial motion by inclined-plane push module fixed block and fixed die, and then make fixed die hold processed steel-plastics composite pipe tightly, and keep holding tightly state;
(4) open thrust cylinder oil pump process switch, inject hydraulic oil, make thrust cylinder piston and dynamic model, make processed steel-plastics composite pipe form bulge loop by the die cavity shape on the dynamic model to the motion of front end housing direction from thrust cylinder oil inlet pipe;
(5) open thrust cylinder oil pump return switch, inject hydraulic oil from thrust cylinder oil return pipe, make thrust cylinder piston and dynamic model to the motion of back cylinder cover direction, thrust cylinder piston and dynamic model retreat to the work original state;
(6) open annular cylinder oil pump return switch, inject hydraulic oil from annular cylinder oil return pipe, annular cylinder piston is moved to the back cylinder cover direction, annular cylinder piston retreats to the work original state, module fixed block and fixed die flick under the return spring effect and are reset to the work original state, and fixed die unclamps processed steel-plastics composite pipe;
(7) processed steel-plastics composite pipe is taken out by the perforate on the front end housing, dynamic model is reset to the work original state and enters next working cycles.
Can carry out the bulge loop extrusion operation to the steel-plastic composite pressure pipe of different bores by changing the combination of different dynamic models, fixed die in the described step (1).
The present invention has the following advantages compared with prior art:
The one, the bulge loop process operation is simple.Because use the hydraulic technique of electromechanical integration, not high to operating personnel's specification requirement, labor intensity of operating personnel is low, only need put into pipe, press switch and get final product, be convenient to promote the use of;
The 2nd, connecting tube has superpower anti-pull-out force.Because connecting tube mainly is to be that load relies on the steel pipe in the steel-plastic composite pressure pipe, thereby makes connecting tube have superpower anti-pull-out force, the connecting tube resistance to plucking takes off the withstand voltage limit of ability near steel-plastic composite pressure pipe itself;
The 3rd, connecting tube does not reduce the overcurrent bore substantially.Because it is sealing surface that connecting tube relies on the pipe end plane, sealing is reliable, and connecting tube does not reduce the overcurrent bore in the steel-plastic composite pressure pipe substantially, has avoided the loss of flood peak;
The 4th, the quick detachable maintenance of connecting tube.Because nut formula and flange form connecting tube mainly interconnect with screw thread and bolt mode, be convenient to dismounting, thereby can carry out Breakdown Maintenance easily;
The 5th, the connecting tube cost is low.Connecting tube available heat plastic engineering injection molding processes is easy to large-scale production, and is with low cost.
Description of drawings
Fig. 1 is the cross-sectional view that hydraulic jack of the present invention is in the initialization state.
Fig. 2 is the cross-sectional view of hydraulic jack shown in Figure 1 to the extrusion modling of steel-plastics composite pipe bulge loop;
Fig. 3 is the present invention adopts nut formula connecting tube on small-bore steel-plastic composite pressure pipe a part section structural representation.
Fig. 4 is the present invention adopts the flange form connecting tube on the large-diameter steel plastic composite pressure pipe a part section structural representation.
Embodiment
Referring to Fig. 1 and Fig. 2:
A kind of steel-plastics composite pipe bulge loop extruder is provided, it connects and composes the extruder housing by outer cylinder 10 and front end housing 15, back cylinder cover 2 by cylinder barrel connecting bolt 9, dynamic model 3 in the cavity volume of extruder housing is connected with thrust cylinder piston 4, thrust cylinder piston 4 is contained in the inner cylinder tube 6, be provided with annular cylinder piston 7 between inner cylinder tube 6 and the outer cylinder 10, annular cylinder piston 7 front ends are oblique activity with module fixed block 11 and cooperate, and module fixed block 11 is connected with fixed die 13; Be provided with return spring 16 between the module fixed block 11; Described back cylinder cover 2 is provided with thrust cylinder oil inlet pipe 5, thrust cylinder oil return pipe 1, annular cylinder oil inlet pipe 8, and annular cylinder oil return pipe 17 is arranged on the outer cylinder 10.After above setting is finished, by annular cylinder and thrust cylinder totally two oil cylinders constitute the complex liquid compressing cylinder, be used to drive extruder work.
Described fixed die 13 connects by shackle and fixed die connecting bolt 12 between module fixed block 11.
Be connected with trapezoidal thread between described dynamic model 3 and the thrust cylinder piston 4.
Described fixed die 13 and module fixed block 11 are the many valve structures of ring-type.
The method of utilizing above-mentioned extruder to produce the steel-plastics composite pipe bulge loop is provided below:
(1), there is return spring 16 to make it evenly separately between the module fixed block 11 according to selected supporting dynamic model 3 and the fixed die 13 of steel-plastic composite pressure pipe caliber size to be processed;
(2) processed steel-plastics composite pipe 14 is put into steel-plastics composite pipe bulge loop extruding working head by the perforate on the front end housing 15, and make the port of processed steel-plastics composite pipe 14 and the dynamic model 3 no gap of colliding;
(3) open annular cylinder oil pump process switch, inject hydraulic oil from annular cylinder oil inlet pipe 8, annular cylinder piston 7 is moved to front end housing 15 directions, annular cylinder piston 7 produces radial motion by inclined-plane push module fixed block 11 and fixed die 13, and then make fixed die 13 hold processed steel-plastics composite pipe 14 tightly, and keep holding tightly state;
(4) open thrust cylinder oil pump process switch, inject hydraulic oil, make thrust cylinder piston 4 and dynamic model 3, make processed steel-plastics composite pipe 14 form bulge loop by the die cavity shape on the dynamic model 3 to the motion of front end housing 15 directions from thrust cylinder oil inlet pipe 5;
(5) open thrust cylinder oil pump return switch, inject hydraulic oil from thrust cylinder oil return pipe 1, make thrust cylinder piston 4 and dynamic model 3 to the motion of back cylinder cover 2 directions, thrust cylinder piston 4 and dynamic model 3 retreat to the work original state;
(6) open annular cylinder oil pump return switch, inject hydraulic oil from annular cylinder oil return pipe 17, annular cylinder piston 7 is moved to back cylinder cover 2 directions, annular cylinder piston 7 retreats to the work original state, module fixed block 11 and fixed die 13 flick under return spring 16 effects and are reset to the work original state, and fixed die 13 unclamps processed steel-plastics composite pipe 14;
(7) processed steel-plastics composite pipe 14 is taken out by the perforate on the front end housing 15, dynamic model 3 is reset to the work original state and enters next working cycles.
Steel-plastics composite pipe bulge loop extruding working head can by change different dynamic model 3, fixed die 13 combinations are carried out the bulge loop extrusion operation to the steel-plastic composite pressure pipe of different bores.
Referring to Fig. 3:
A kind of steel-plastics composite pipe nut formula connecting tube is provided, and it is mainly used in the connection of small-bore steel-plastic composite pressure pipe.
Its body is processed by the thermoplastic engineering plastic injection moulding, and its cross-section structure is seen Fig. 3:
The operation principle and the assemble sequence of steel-plastics composite pipe nut formula connecting tube are:
The one, be inserted in first attachment cap 18.First attachment cap 18 is inserted in to be connected steel-plastic composite pressure pipe 14 standby;
The 2nd, extruding steel-plastics composite pipe bulge loop.The special-purpose bulge loop extruder of steel-plastic composite pressure pipe 14 usefulness steel-plastics composite pipes that is connected that packages first attachment cap 18 is extruded bulge loop;
The 3rd, general assembly.After installing sealing ring 19 on first connector 20, with first connector 20 and first attachment cap 18 by existing be threaded promptly to finish after screwing be linked and packed.
Referring to Fig. 4:
A kind of steel-plastics composite pipe flange form connecting tube is provided, and it is mainly used in the connection of large-diameter steel plastic composite pressure pipe.
Its body is processed by the thermoplastic engineering plastic injection moulding, and its cross-section structure is seen Fig. 4: the operation principle and the assemble sequence of steel-plastics composite pipe flange form connecting tube are:
The one, be inserted in second attachment cap 21.Second attachment cap 21 is inserted in to be connected steel-plastic composite pressure pipe 14 standby;
The 2nd, extruding steel-plastics composite pipe bulge loop.The special-purpose bulge loop extruder of steel-plastic composite pressure pipe 14 usefulness steel-plastics composite pipes that is connected that packages second attachment cap 21 is extruded bulge loop;
The 3rd, general assembly.After installing sealing ring 19 on second connector 23, promptly finish being linked and packed after second connector 23 and second attachment cap 21 screwed by connecting bolt 22.
Claims (6)
1, a kind of steel-plastics composite pipe bulge loop extruder, it is characterized in that: it connects and composes the extruder housing by outer cylinder and front end housing, back cylinder cover, dynamic model in the cavity volume of extruder housing is connected with thrust cylinder piston, thrust cylinder piston is contained in the inner cylinder tube, be provided with annular cylinder piston between inner cylinder tube and the outer cylinder, annular cylinder piston nose cooperates with the oblique activity of module fixed block, and the module fixed block is connected with fixed die; Be provided with return spring between the module fixed block; Described back cylinder cover is provided with thrust cylinder oil inlet pipe, thrust cylinder oil return pipe, annular cylinder oil inlet pipe, and annular cylinder oil return pipe is arranged on the outer cylinder.
2, steel-plastics composite pipe bulge loop extruder as claimed in claim 1 is characterized in that: described fixed die connects by shackle and fixed die connecting bolt between the module fixed block.
3, steel-plastics composite pipe bulge loop extruder as claimed in claim 1 is characterized in that: be connected with trapezoidal thread between described dynamic model and the thrust cylinder piston.
4, steel-plastics composite pipe bulge loop extruder as claimed in claim 1 is characterized in that: described fixed die and module fixed block are the many valve structures of ring-type.
5, a kind of steel-plastics composite pipe bulge loop pressing method is characterized in that it is finished by following steps:
(1) supporting dynamic model and fixed die are installed in the extruder housing;
(2) processed steel-plastics composite pipe is placed in the extruder by the perforate on the front end housing, and make the port of processed steel-plastics composite pipe and the dynamic model no gap of colliding;
(3) open annular cylinder oil pump process switch, inject hydraulic oil from annular cylinder oil inlet pipe, make annular cylinder piston forward cylinder cap direction motion, annular cylinder piston produces radial motion by inclined-plane push module fixed block and fixed die, and then make fixed die hold processed steel-plastics composite pipe tightly, and keep holding tightly state;
(4) open thrust cylinder oil pump process switch, inject hydraulic oil, make thrust cylinder piston and dynamic model, make processed steel-plastics composite pipe form bulge loop by the die cavity shape on the dynamic model to the motion of front end housing direction from thrust cylinder oil inlet pipe;
(5) open thrust cylinder oil pump return switch, inject hydraulic oil from thrust cylinder oil return pipe, make thrust cylinder piston and dynamic model to the motion of back cylinder cover direction, thrust cylinder piston and dynamic model retreat to the work original state;
(6) open annular cylinder oil pump return switch, inject hydraulic oil from annular cylinder oil return pipe, annular cylinder piston is moved to the back cylinder cover direction, annular cylinder piston retreats to the work original state, module fixed block and fixed die flick under the return spring effect and are reset to the work original state, and fixed die unclamps processed steel-plastics composite pipe;
(7) processed steel-plastics composite pipe is taken out by the perforate on the front end housing, dynamic model is reset to the work original state and enters next working cycles.
6, steel-plastics composite pipe bulge loop pressing method as claimed in claim 5 is characterized in that: by changing the combination of different dynamic models, fixed die the steel-plastic composite pressure pipe of different bores is carried out the bulge loop extrusion operation in described step (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610051780 CN1857816A (en) | 2006-06-02 | 2006-06-02 | Convex ring extruding method and machine for composite steel-plastic pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610051780 CN1857816A (en) | 2006-06-02 | 2006-06-02 | Convex ring extruding method and machine for composite steel-plastic pipe |
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| CN1857816A true CN1857816A (en) | 2006-11-08 |
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| CN 200610051780 Pending CN1857816A (en) | 2006-06-02 | 2006-06-02 | Convex ring extruding method and machine for composite steel-plastic pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270843B (en) * | 2008-04-24 | 2012-11-21 | 王林秋 | Production method of hose elbow connection and processing device used in the method |
| CN103434019A (en) * | 2013-07-19 | 2013-12-11 | 桐乡市德盛纸业有限公司 | Mud composite paper bobbin machine and mud composite bobbin production method |
| CN105598294A (en) * | 2016-02-24 | 2016-05-25 | 河海大学文天学院 | Cold extrusion die for torque tube of passenger car seat |
| CN108723203A (en) * | 2018-07-12 | 2018-11-02 | 重庆伦瑞风传动科技有限公司 | Mini-tiller shell decompressor |
-
2006
- 2006-06-02 CN CN 200610051780 patent/CN1857816A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270843B (en) * | 2008-04-24 | 2012-11-21 | 王林秋 | Production method of hose elbow connection and processing device used in the method |
| CN103434019A (en) * | 2013-07-19 | 2013-12-11 | 桐乡市德盛纸业有限公司 | Mud composite paper bobbin machine and mud composite bobbin production method |
| CN103434019B (en) * | 2013-07-19 | 2016-01-13 | 桐乡市德盛纸业有限公司 | The production method of mud compound paper pipe machine and mud compound paper pipe |
| CN105598294A (en) * | 2016-02-24 | 2016-05-25 | 河海大学文天学院 | Cold extrusion die for torque tube of passenger car seat |
| CN108723203A (en) * | 2018-07-12 | 2018-11-02 | 重庆伦瑞风传动科技有限公司 | Mini-tiller shell decompressor |
| CN108723203B (en) * | 2018-07-12 | 2024-02-02 | 重庆伦瑞风传动科技有限公司 | Mini-tiller shell stamping device |
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