CN102601959A - Extruder for HDPE (High Density Polyethylene) winding reinforced pipe - Google Patents
Extruder for HDPE (High Density Polyethylene) winding reinforced pipe Download PDFInfo
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- CN102601959A CN102601959A CN2012100927634A CN201210092763A CN102601959A CN 102601959 A CN102601959 A CN 102601959A CN 2012100927634 A CN2012100927634 A CN 2012100927634A CN 201210092763 A CN201210092763 A CN 201210092763A CN 102601959 A CN102601959 A CN 102601959A
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Abstract
The invention provides an extruder for an HDPE (High Density Polyethylene) winding reinforced pipe, belonging to the technical field of machinery, and solving the technical problems that the existing extruder for the HDPE winding reinforced pipe is inconvenient to operate and easy to have an accident, and the like. The extruder for the HDPE winding reinforced pipe comprises a base 1 and a base 2, wherein the base 1 and the base 2 can hold a main engine and a mould respectively; the base 1 is provided with a combustion module which can heat the mould, an extrusion module 1 which can form a main pipe body on the mould, and an extrusion module 2 which can attach a reinforced pipe on the main pipe body. The extrusion module 2 is connected with a core pipe conveying unit and an external casing conveying unit on the base 2; the base 1 can be fixed on the ground; a horizontal guide rail which can be fixed on the ground is arranged below the base 2; and the base 2 is connected on the horizontal guide rail in a sliding way, and a driving mechanism which can drive the base 2 to move along the horizontal guide rail is arranged between the base 2 and the horizontal guide rail. The invention has the advantages that: the operation is simple, the precision is high, the efficiency is high, and the like.
Description
Technical field
The invention belongs to field of mechanical technique, relate to the extruding machine of the process equipment of a kind of carat of pipe, particularly a kind of carat of pipe.
Background technology
The definition of polyethylene (PE) winding structure pipe is: with polyvinyl resin is main, and being used to of adopting that winding shaping process processes do not have the general designation of the thermoplastic pipe of interior pressure effect.Be characterized in: 1) the extremely strong chemical resistance corrosion and the ability of erosion.2) the good shock resistance of pliability is strong.3) cold resistance, ageing-resistant.Connect simple, safe and reliable.4) in light weight, easy construction.5) anti-wear performance is strong.Service life is more than 50 years, and non-maintaining in lifetime.6) drainage performance is superior.Wholesomeness is good, and recovery capable of circulation is used.
This tubing generally is called a carat pipe again, and general carat of pipe comprises main pipe and the reinforced pipe that is wrapped in its lateral surface, and reinforced pipe comprises core pipe and outer sleeve body, and outer sleeve body is wrapped in the lateral surface of core pipe.
It is rare to be used to produce this carat of equipment of managing at present; The disclosed a kind of production device of wall tube of large aperture framework-tube polyethylene winding structure of its structure such as patent (CN201275880Y); Comprise combustion system, skeleton pipe induction system, extruding machine, skeleton pipe reel, mobile trolley used, electrical control cabinet, cooling back installation, pressure frame, rotation roller frame; Particularly flat die oral area length dimension is 170-230mm in the flow passage system; An end of support link is connected with driving sleeve through bearing pin in the roller mould, and its other end is connected with the support link frame, and the support link frame connects to form with final drive shaft through the axle of having strong market potential.This equipment can extrusion molding, but also exists defective, mobile trolley used being slidingly connected on the guide rail in this device; Guide rail fixes on the ground, extruding machine be fixed on mobile trolley used on, form extruding machine during work and move and motionless working method such as mould; Cause mobile trolley used heavy burden bigger; The operator will follow extruding machine to move, and operation is relatively more inconvenient, occurs accident easily.
Summary of the invention
The objective of the invention is the problems referred to above to existing technology existence, the extruding machine of a kind of carat of pipe is provided, technical problem to be solved by this invention is to reduce the weight of extruding machine movable part, thereby improves its machining accuracy.
The object of the invention can be realized through following technical proposal: the extruding machine of a kind of carat of pipe; Comprise a pedestal one and the pedestal two that can place mould that to place main frame; Described pedestal one be provided with one can to the burning module of mold heated, one can moulding main pipe on the mould extrude that module one and one can adhere to reinforced pipe on the main pipe extrude module two; It is characterized in that; Described core pipe supply unit on extruding module two and being arranged on pedestal two links to each other with the outer sleeve body supply unit; Described pedestal one can fix on the ground, and the below of described pedestal two is provided with the horizontal guide rail that can fix on the ground, and described pedestal two is slidingly connected on the horizontal guide rail and is provided with between the two and can drive the driving mechanism that this pedestal two moves along this horizontal guide rail.
The operation principle of this device is following: after starting working, mould is placed on the pedestal two, the burning module is started working to mold heated; Extrude module one extrusion plastic material then on mould; Rotational forming formation main pipe along with mould extrudes module two and on main pipe's lateral wall, extrudes reinforced pipe, because temperature is than higher; The outer wall of reinforced pipe and main pipe's outer wall welding are mutually fixed, and form finished product.This device adopts the below that horizontal guide rail is located at pedestal two, and pedestal two can move along horizontal guide rail in the process of work, forms motionless and the working method that mould moves of extruding part; Making the operator can stand in the original place operates machines; Improved operating efficiency greatly,, made the load of horizontal guide rail and driving mechanism part reduce simultaneously because mould part is in light weight more a lot of than extruding part; Can reduce the specification of horizontal guide rail, reduce cost.
In the extruding machine of a kind of carat of above-mentioned pipe; Described driving mechanism comprises being connected and is arranged on the chain on the horizontal guide rail; This chain and horizontal guide rail laterally arrange; Be installed with the driven wheel and the engine that circumferentially can rotate on the described pedestal two, be provided with the drive mechanism that can the former transmission of torque be given the latter between the main shaft of described engine and the driven wheel, described driven wheel and described chain are meshed.Engine begins to rotate the back and drives the driven wheel rotation, and driven wheel rotates back and chain generation relative displacement, thereby the position of pedestal two and horizontal guide rail is changed; Reach mobile purpose; The fit system that it adopts driven wheel and chain makes that the automation control ratio of engine is more convenient, and chain is than the easy processing of tooth bar; Reduce cost, the cooperation of chain and driven wheel simultaneously also can keep precision.
In the extruding machine of a kind of carat of above-mentioned pipe; As another kind of scheme; Described driving mechanism comprises and laterally arranges and be connected in the tooth bar on the horizontal guide rail sidepiece; Described pedestal two is provided with the driven wheel that can be meshed with described tooth bar, is installed with engine on the described pedestal two, is provided with the drive mechanism that can the former transmission of torque be given the latter between the main shaft of described engine and the driven wheel.Cooperation between driven wheel and the tooth bar also is more stable a kind of mode.
In the extruding machine of a kind of carat of above-mentioned pipe, described drive mechanism comprises a change gear box, and the input of described change gear box links to each other with the main shaft of engine, and its output links to each other with driven wheel.Change gear box can be done an adjustment to rotating speed and torque.
In the extruding machine of a kind of carat of above-mentioned pipe, described engine is motor or hydraulic motor.Motor ability source clean, easy to use, hydraulic motor power is big, electrodeless variable-speed.
In the extruding machine of a kind of carat of above-mentioned pipe, described horizontal guide rail comprises that two can be connected in ground guide rail one and guide rail two, and this guide rail one laterally arranges with the guide rail two-phase, and the distance between this guide rail one and the guide rail two is 1m～3m.Two parallel guide rails one and guide rail two are set, further improve the stability of guiding.
In the extruding machine of a kind of carat of above-mentioned pipe; Described burning module comprise one can movable telescopic mechanical arm and several shower nozzles; Described mechanical arm is connected on the pedestal one; Described shower nozzle is connected on the mechanical arm, also is provided with tanks on the described pedestal one, is connected with delivery conduit between described tanks and the shower nozzle.Shower nozzle is sprayed onto the lateral surface of mould after with ignited fuel, thereby realizes preheating mould.
In the extruding machine of a kind of carat of above-mentioned pipe, the described module one of extruding comprises and extrudes first and feeding spiro rod one, and described outlet of extruding first inlet and feeding spiro rod one is connected, and described feeding spiro rod is connected on the pedestal one.To extruding first place, plastics are through extruding first being expressed on the mould with plastic conveying and plastic for feeding spiro rod one.
In the extruding machine of a kind of carat of above-mentioned pipe; The described module two of extruding comprises an extrusion die; Described extrusion die comprises a bag die orifice and a bag die sleeve that is set in this bag die orifice outside; Be provided with between described bag die orifice and the bag die sleeve and can hold the passage of extruding that outer sleeve body passes through, describedly extrude the annular shape that passage is side-closed, the center of described bag die orifice offers and can hold the current central passage of core pipe; The inlet of described central passage links to each other with core pipe supply unit, and the described inlet of extruding passage links to each other with the outer sleeve body supply unit.Outer sleeve body is the annular shape that is side-closed through extruding on the lateral surface of passage attached to the core pipe because extrude passage, so the side of the outer sleeve body of extruding also is totally enclosed, the lateral surface that outer sleeve body is wrapped in the core pipe does not have axial slit.
In the extruding machine of a kind of carat of above-mentioned pipe; Described pedestal two is provided with feeding reel and leading truck; Described core pipe supply unit comprises a support body that is connected on the pedestal two; Be provided with in the described support body some to main conveying roller and auxiliary conveying roller, but every pair of main conveying roller or auxiliary conveying roller all are provided with relatively and the middle current conveying gap of core tube feeding of leaving, and are installed with auxiliary drive motor on the described support body; The main shaft of described drive motors links to each other with one of them main conveying roller, and is connected through driving-belt between described main conveying roller and the auxiliary conveying roller.The core pipe generally is wound on the feeding reel, enters into through leading truck in the central passage of bag die orifice, and drive motors drives main conveying roller and rotates; Main conveying roller drives auxiliary conveying roller through driving-belt and rotates; To be positioned at jointly and carry the core pipe in gap to drive forwards, it drives the core pipe through paired main conveying roller and auxiliary conveying roller, and is simple in structure; Carry and stablize good directionality.
In the extruding machine of a kind of carat of above-mentioned pipe; Described feeding reel is provided with a hair-dryer; The rotating shaft of this feeding reel is provided with a wireway, and the input port of this wireway links to each other with hair-dryer, and its delivery outlet can link to each other with the end of core pipe on being wound on the feeding reel.Through the power air being imported in the hollow duct of core pipe, can play the effect of support to the outer wall of core pipe, make the core pipe indeformable under hot environment, Forming Quality is good, also can after the core pipe is wrapped on the mould lateral surface, play the effect of cooling.
In the extruding machine of a kind of carat of above-mentioned pipe, described outer sleeve body supply unit comprises the feeding spiro rod two that is installed on the pedestal one, and the outlet of described feeding spiro rod two links to each other with the described inlet of extruding passage.
Compared with prior art,
1, this device adopts the below that horizontal guide rail is located at pedestal two, and pedestal two can move along horizontal guide rail in the process of work, forms motionless and the working method that mould moves of extruding part; Making the operator can stand in the original place operates machines; Improved operating efficiency greatly,, made the load of horizontal guide rail and driving mechanism part reduce simultaneously because mould part is in light weight more a lot of than extruding part; Can reduce the specification of horizontal guide rail, reduce cost.
2, wherein, driving mechanism adopts the fit system of driven wheel and chain, makes that the automation control ratio of engine is more convenient, and chain reduces cost than the easy processing of tooth bar, and the cooperation of chain and driven wheel simultaneously also can keep precision.
3, outer sleeve body is the annular shape that is side-closed through extruding on the lateral surface of passage attached to the core pipe because extrude passage, so the side of the outer sleeve body of extruding also is totally enclosed, the lateral surface that outer sleeve body is wrapped in the core pipe does not have axial slit, and intensity is good.
Description of drawings
Fig. 1 is carat overall structure front elevational schematic of the extruding machine of pipe.
Fig. 2 is carat overall structure schematic top plan view of the extruding machine of pipe.
Fig. 3 is the structural representation of pedestal two and horizontal guide rail.
Fig. 4 is a structure cross-sectional schematic of extruding module two.
Fig. 5 is a structure schematic top plan view of extruding module two.
Fig. 6 is a structure schematic side view of extruding module two.
Fig. 7 is the structural representation of bag die orifice.
Fig. 8 is the structural representation of bag die sleeve.
Fig. 9 is the structural representation of core pipe supply unit.
Figure 10 is the structural representation of hair-dryer and feeding reel.
Among the figure, 1, pedestal one; 2, pedestal two; 31, horizontal guide rail; 32, driven wheel; 33, engine; 34, change gear box; 35, chain; 36, guide rail one; 37, guide rail two; 41, hair-dryer; 42, wireway; 5, feeding reel; 6, mould; 7, outer sleeve body supply unit; 71, feeding spiro rod two; 8, burning module; 81, mechanical arm; 82, shower nozzle; 9, extrude module one; 91, extrude first; 92, feeding spiro rod one; 10, extrude module two; 101, extrusion die; 1011, bag die orifice; 1012, bag die sleeve; 1013, extrude passage; 1014, central passage; 11, core pipe supply unit; 111, leading truck; 112, support body; 113, main conveying roller; 114, auxiliary conveying roller; 115, driving-belt.
The specific embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
Like Fig. 1, Fig. 2 and shown in Figure 3; The extruding machine of this carat of pipe comprises a pedestal 1 and the pedestal 22 that can place mould 6 that can place main frame; Pedestal 1 is provided with one can be to the burning module 8 of mould 6 heating, specifically, burning module 8 comprise one can movable telescopic mechanical arm 81 and several shower nozzles 82; Mechanical arm 81 is connected on the pedestal 1; Shower nozzle 82 is connected on the mechanical arm 81, also is provided with tanks on the pedestal 1, is connected with delivery conduit between tanks and the shower nozzle 82.Shower nozzle 82 is with the lateral surface that is sprayed onto mould 6 behind the ignited fuel, thus realization preheating to mould 6.
Also be provided with on the pedestal 1 one can be on mould 6 the moulding main pipe extrude module 1; Extrude module 1 comprise extrude first 91 with feeding spiro rod 1; Extrude first 91 the inlet and the outlet of feeding spiro rod 1 and be connected, feeding spiro rod is connected on the pedestal 1.To extruding first 91 places, plastics are expressed on the mould 6 through extruding first 91 feeding spiro rod 1 with plastic conveying and plastic.
Like Fig. 4, Fig. 5, Fig. 6, Fig. 7 and shown in Figure 8; Also be provided with on the pedestal 1 one can on the main pipe, adhere to reinforced pipe extrude module 2 10; Core pipe supply unit 11 on extruding module 2 10 and being arranged on pedestal 22 links to each other with outer sleeve body supply unit 7, specifically, extrudes module 2 10 and comprises an extrusion die 101; Extrusion die 101 comprises a bag die orifice 1011 and a bag die sleeve 1012 that is set in these bag die orifice 1011 outsides; Bag die orifice 1011 and bag be provided with between the die sleeve 1012 can hold that outer sleeve body passes through extrude path 10 13, extrude the annular shape that path 10 13 is side-closed, the center of bag die orifice 1011 offers and can hold the current central passage 1014 of core pipe; The inlet of central passage 1014 links to each other with core pipe supply unit 11, and the inlet of extruding path 10 13 links to each other with outer sleeve body supply unit 7.Outer sleeve body supply unit 7 comprises the feeding spiro rod 2 71 that is installed on the pedestal 1, and the outlet of feeding spiro rod 2 71 links to each other with the inlet of extruding path 10 13.Outer sleeve body is the annular shapes that are side-closed through extruding on the lateral surface of path 10 13 attached to the core pipe because extrude path 10 13, so the side of the outer sleeve body of extruding also is totally enclosed, the lateral surface that outer sleeve body is wrapped in the core pipe does not have axial slit.
As shown in Figure 3; Pedestal 1 can fix on the ground; The below of pedestal 22 is provided with the horizontal guide rail 31 that can fix on the ground, and pedestal 22 is slidingly connected on the horizontal guide rail 31 and is provided with between the two and can drive the driving mechanism that this pedestal 22 moves along this horizontal guide rail 31.Specifically; Driving mechanism comprises being connected and is arranged on the chain 35 on the horizontal guide rail 31; This chain 35 laterally arranges with horizontal guide rail 31; Horizontal guide rail 31 comprises that two can be connected in ground guide rail 1 and guide rail 2 37, and this guide rail 1 parallels setting with guide rail 2 37, and the distance between this guide rail 1 and the guide rail 2 37 is 1m～3m.Be installed with the driven wheel 32 and engine 33 that circumferentially can rotate on the pedestal 22; Be provided with the drive mechanism that can the former transmission of torque be given the latter between the main shaft of engine 33 and the driven wheel 32; Driven wheel 32 is meshed with chain 35; Drive mechanism comprises a change gear box 34, and the input of change gear box 34 links to each other with the main shaft of engine 33, and its output links to each other with driven wheel 32.Change gear box 34 can be done an adjustment to rotating speed and torque.In the present embodiment, engine 33 is a motor, but also can be hydraulic motor as another kind of mode.Engine 33 begins to rotate the back and drives driven wheel 32 rotations, and driven wheel 32 rotates the back and relative displacement takes place chain 35, thereby the position of pedestal 22 and horizontal guide rail 31 is changed, and reaches mobile purpose.
As another kind of scheme; Driving mechanism also can be: comprise laterally arranging and being connected in the tooth bar on horizontal guide rail 31 sidepieces; Pedestal 22 is provided with the driven wheel 32 that can be meshed with tooth bar; Be installed with engine 33 on the pedestal 22, be provided with the drive mechanism that can the former transmission of torque be given the latter between the main shaft of engine 33 and the driven wheel 32.
Like Fig. 9 and shown in Figure 10; Pedestal 22 is provided with feeding reel 5 and leading truck 111; Core pipe supply unit 11 comprises a support body 112 that is connected on the pedestal 22; Be provided with in the support body 112 some to main conveying roller 113 and auxiliary conveying roller 114, but every pair of main conveying roller 113 or auxiliary conveying roller 114 all is provided with relatively and the middle current conveying gap of core tube feeding of leaving is installed with auxiliary drive motor on the support body 112; The main shaft of drive motors links to each other with one of them main conveying roller 113, and is connected through driving-belt 115 between main conveying roller 113 and the auxiliary conveying roller 114.The core pipe generally is wound on the feeding reel 5; Enter into through leading truck 111 in the central passage 1014 of bag die orifice 1011; Drive motors drives main conveying roller 113 and rotates; Main conveying roller 113 drives auxiliary conveying roller 114 through driving-belt 115 and rotates, and will be positioned at jointly and carry the core pipe in gap to drive forwards.Feeding reel 5 is provided with a hair-dryer 41, and the rotating shaft of this feeding reel 5 is provided with a wireway 42, and the input port of this wireway 42 links to each other with hair-dryer 41, and its delivery outlet can link to each other with the end of core pipe on being wound on feeding reel 5.Through the power air being imported in the hollow duct of core pipe, can play the effect of support to the outer wall of core pipe, make the core pipe indeformable under hot environment, Forming Quality is good, also can after the core pipe is wrapped on mould 6 lateral surfaces, play the effect of cooling.
The operation principle of this device is following: after starting working, mould 6 is placed on the pedestal 22, burning module 8 is started working to mould 6 heating; Extrude module one 9 extrusion plastic materials then on mould 6; Rotational forming formation main pipe along with mould 6 extrudes module 2 10 and on main pipe's lateral wall, extrudes reinforced pipe, because temperature is than higher; The outer wall of reinforced pipe and main pipe's outer wall welding are mutually fixed, and form finished product.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. the extruding machine of a carat pipe; Comprise that one (1) and one of a pedestal can placing main frame can place the pedestal two (2) of mould (6); Described pedestal one (1) be provided with one can to the burning module (8) of mould (6) heating, one can mould (6) go up the moulding main pipe extrude that one (9) and one of module can adhere to reinforced pipe on the main pipe extrude module two (10); It is characterized in that; Described core pipe supply unit (11) on extruding module two (10) and being arranged on pedestal two (2) links to each other with outer sleeve body supply unit (7); Described pedestal one (1) can fix on the ground; The below of described pedestal two (2) is provided with the horizontal guide rail (31) that can fix on the ground, and described pedestal two (2) is slidingly connected on the horizontal guide rail (31) and is provided with between the two and can drive the driving mechanism that this pedestal two (2) moves along this horizontal guide rail (31).
2. the extruding machine of a kind of carat of pipe according to claim 1; It is characterized in that; Described driving mechanism comprises being connected and is arranged on the chain (35) on the horizontal guide rail (31); This chain (35) and horizontal guide rail (31) laterally arrange; Be installed with the driven wheel (32) and the engine (33) that circumferentially can rotate on the described pedestal two (2), be provided with the drive mechanism that can the former transmission of torque be given the latter between the main shaft of described engine (33) and the driven wheel (32), described driven wheel (32) and described chain (35) are meshed.
3. the extruding machine of a kind of carat of pipe according to claim 1; It is characterized in that; Described driving mechanism comprises and laterally arranges and be connected in the tooth bar on horizontal guide rail (31) sidepiece; Described pedestal two (2) is provided with the driven wheel (32) that can be meshed with described tooth bar, is installed with engine (33) on the described pedestal two (2), is provided with the drive mechanism that can the former transmission of torque be given the latter between the main shaft of described engine (33) and the driven wheel (32).
4. according to the extruding machine of claim 1 or 2 or 3 described a kind of carat of pipes; It is characterized in that; Described drive mechanism comprises a change gear box (34), and the input of described change gear box (34) links to each other with the main shaft of engine (33), and its output links to each other with driven wheel (32).
5. according to the extruding machine of claim 1 or 2 or 3 described a kind of carat of pipes; It is characterized in that; Described horizontal guide rail (31) comprises that two can be connected in ground guide rail one (36) and guide rail two (37); This guide rail one (36) and guide rail two (37) parallel setting, and the distance between this guide rail one (36) and the guide rail two (37) is 1m～3m.
6. according to the extruding machine of claim 1 or 2 or 3 described a kind of carat of pipes; It is characterized in that; Described burning module (8) comprise one can movable telescopic mechanical arm (81) and several shower nozzles (82), described mechanical arm (81) is connected on the pedestal one (1), described shower nozzle (82) is connected on the mechanical arm (81); Also be provided with tanks on the described pedestal one (1), described tanks and shower nozzle are connected with delivery conduit between (82).
7. according to the extruding machine of claim 1 or 2 or 3 described a kind of carat of pipes; It is characterized in that; The described module one (9) of extruding comprises and extrudes first (91) and feeding spiro rod one (92); Describedly extrude the inlet of first (91) and the outlet of feeding spiro rod one (92) is connected, described feeding spiro rod is connected on the pedestal one (1).
8. according to the extruding machine of claim 1 or 2 or 3 described a kind of carat of pipes; It is characterized in that; The described module two (10) of extruding comprises an extrusion die (101); Described extrusion die (101) comprises a bag die orifice (1011) and a bag die sleeve (1012) that is set in this bag die orifice (1011) outside; Be provided with between described bag die orifice (1011) and bag die sleeve (1012) can hold that outer sleeve body passes through extrude passage (1013), describedly extrude the annular shape that passage (1013) is side-closed, the center of described bag die orifice (1011) offers and can hold the current central passage (1014) of core pipe; The inlet of described central passage (1014) links to each other with core pipe supply unit (11), and the described inlet of extruding passage (1013) links to each other with outer sleeve body supply unit (7).
9. the extruding machine of a kind of carat of pipe according to claim 8; It is characterized in that; Described pedestal two (2) is provided with feeding reel (5) and leading truck (111); Described core pipe supply unit (11) comprises a support body (112) that is connected on the pedestal two (2); Be provided with in the described support body (112) some to main conveying roller (113) and auxiliary conveying roller (114), every pair of main conveying roller (113) or auxiliary conveying roller (114) but all relatively be provided with and the middle current conveying gap of core tube feeding of leaving, described support body is installed with auxiliary drive motor on (112); The main shaft of described drive motors links to each other with one of them main conveying roller (113), and is connected through driving-belt (115) between described main conveying roller (113) and the auxiliary conveying roller (114).
10. the extruding machine of a kind of carat of pipe according to claim 9; It is characterized in that; Described feeding reel (5) is provided with a hair-dryer (41); The rotating shaft of this feeding reel (5) is provided with a wireway (42), and the input port of this wireway (42) links to each other with hair-dryer (41), and its delivery outlet can link to each other with the end of core pipe on being wound on feeding reel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210092763.4A CN102601959B (en) | 2012-03-31 | 2012-03-31 | Extruder for HDPE (High Density Polyethylene) winding reinforced pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210092763.4A CN102601959B (en) | 2012-03-31 | 2012-03-31 | Extruder for HDPE (High Density Polyethylene) winding reinforced pipe |
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| CN102601959A true CN102601959A (en) | 2012-07-25 |
| CN102601959B CN102601959B (en) | 2015-05-20 |
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| CN102601959B (en) | 2015-05-20 |
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