CN106426977B - A kind of vertical composite material tube pipeline production line - Google Patents

A kind of vertical composite material tube pipeline production line Download PDF

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Publication number
CN106426977B
CN106426977B CN201610765130.3A CN201610765130A CN106426977B CN 106426977 B CN106426977 B CN 106426977B CN 201610765130 A CN201610765130 A CN 201610765130A CN 106426977 B CN106426977 B CN 106426977B
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China
Prior art keywords
reinforced plastic
fiber
glass reinforced
vertical
mould shaft
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CN106426977A (en
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李鹏飞
李强
王德春
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Qinyang Composite Materials Research Institute Co ltd
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • B29C70/323Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/76Cores

Abstract

The present invention discloses a kind of vertical composite material tube pipeline production line, and Vertical Rack upper end is rotatably assorted with the mould shaft upper end being vertically arranged;Vertical Rack top is equipped with round tube formation mechanism;Vertical Rack below round tube formation mechanism is equipped with fiber winding machine structure and heating device, wherein the fiber for being impregnated with resin is wrapped in outside circumferential fiber by fiber winding machine structure, heating device is located at below the fiber winding machine structure, traction device is coaxially fixed on mould shaft lower end, and traction device traction composite material conduit moves down;Vertical Rack below traction device is equipped with a cutting machine.Traditional horizontal type structure is adjusted to present vertical structure by the present invention, prevent from this way fiber be biased to mould shaft side, thus can reinforced composite pipeline structural strength;And vertical structure of the invention and the organic cooperation of quartz sand sand adding mechanism, also quartz sand can be made to add sand closely knit, can thus effectively reduce the usage amount of fiber.

Description

A kind of vertical composite material tube pipeline production line
Technical field
The invention belongs to pipeline production field more particularly to a kind of vertical composite material tube pipeline production lines.
Background technique
Composite material conduit is a kind of with extensive pipeline, and existing composite material tube pipeline production line is horizontal type structure, Fiber is wrapped on mould shaft, and added with quartz sand outside fiber, and addition quartz sand can effectively reduce the dosage of fiber, To reduce the production cost of composite material conduit.
Existing horizontal composite material tube pipeline production line primary disadvantage is that: due to using horizontal type structure, so fiber and stone Sand can be biased under the effect of gravity on the downside of the axial line of mould shaft, will lead to fiber leakiness in this way, to influence to manage The structural strength in road;Meanwhile horizontal type structure also result in quartz sand plus sand thickness cannot be too thick, thus need more fibres The pipeline of required thickness could be made in dimension, and fiber is at high cost, and the production cost of pipeline cannot thus be effectively reduced.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of vertical composite material tube pipeline production line, pipeline to be improved Structural strength.
Technical scheme is as follows: a kind of vertical composite material tube pipeline production line, it is characterised in that: including vertical machine Frame (1) and traction device, wherein Vertical Rack (1) upper end is rotatably assorted with mould shaft (2) upper end being vertically arranged, the mould Tool axis can rotate under rotating electric machine drive;Vertical Rack (1) top is equipped with round tube formation mechanism, the round tube formation mechanism Glass reinforced plastic band can be wrapped on the mould shaft (2), and form a round tube persistently moved down on mould shaft (2), And the round tube follows mould shaft (2) synchronous rotary;
Vertical Rack (1) below the round tube formation mechanism is equipped with fiber winding machine structure and heating device (11), The fiber for being impregnated with resin is wrapped in outside the circumferential fiber by middle fiber winding machine structure, and heating device (11) is located at the fiber Below winding mechanism, and it will be wrapped in the fiber-heated solidification outside circumferential fiber, to form composite material conduit;
The traction device is coaxially fixed on mould shaft (2) lower end, which draws composite material conduit to moving down It is dynamic;Vertical Rack (1) below the traction device is equipped with a cutting machine (12), this cutting machine can cut through this The composite material conduit of cutting machine, and the composite material conduit cut is carried and is transported by travelling bogie.
The operation principle of the present invention is that: the mould shaft being vertically arranged rotates under rotating electric machine drive, and outside mould shaft Face is formed with round tube, which follows mould shaft synchronous rotary, and fiber is wound outside round tube, and the fiber outside round tube is by adding Thermal forms composite material conduit after being heating and curing, and composite material conduit lower part is by being cut one when cutting machine (12) Section, the composite material conduit cut are carried and are transported by travelling bogie.
Using above technical scheme, traditional horizontal type structure is adjusted to present vertical structure by the present invention, thus can Prevent fiber be biased to mould shaft side, and at this time fiber under the effect of gravity toward clan under the mould shaft being vertically arranged, thus Have the function that be compacted fiber, and then the structural strength of reinforced composite pipeline.
It is vertical between the round tube formation mechanism and fiber winding machine structure as an important preferred embodiment of the invention Rack (1) is equipped with a quartz sand sand adding mechanism, which includes quartz sand conveyer belt (4) and rotation seat (7), in which: be equipped with one plus sand hopper (5) below the quartz sand conveyer belt (4) vertically, which will contain tree The quartz sand of rouge, which is transported to, to be added in sand hopper (5);Described plus sand hopper (5) empty set should add sand hopper to be equipped with vibration outside mould shaft (2) Dynamic device (6), and sand hopper (5) outer wall is added to fix with the rotation seat (7) top, on the rotation seat and the Vertical Rack (1) Support base (8) is rotatably assorted, and rotation seat (7) can rotate synchronously under driving assembly driving with mould shaft (2), thus by quartzy Sand is added to outside the round tube;Described plus sand hopper (5) lower end is coaxially provided with circumferential fiber yarn arranging loop (9), the circumferential direction fiber cloth yarn Annular space covers outside the mould shaft (2), and by circumferential fiber cloth outside quartz sand, to catch quartz sand.
Using the above structure, quartz sand can not only be added, so as to improve the performance of composite material conduit, and quartz sand Sand adding mechanism and the organic cooperation of vertical structure of the invention, also can make quartz sand add sand closely knit, thus increase quartz sand plus sand Thickness, can thus effectively reduce the usage amount of fiber, to achieve the purpose that reduce composite material conduit production cost.
As the prioritization scheme of this case, the round tube formation mechanism includes mounting platform (13), glass reinforced plastic band slope driving (16) and annular reinforcing fiber yarn arranging loop (50) are covered, wherein mounting platform (13) is installed on the Vertical Rack (1), the installation Platform top surface is equipped with the first glass reinforced plastic band loading assemblies and the second glass reinforced plastic band loading assemblies, the structure phase of the two loading assemblies Deng, and the second glass reinforced plastic loading assemblies are located on the inside of the first glass reinforced plastic loading assemblies;The second glass reinforced plastic loading assemblies are by upper Charging tray (14) and feeding shaft (15) are constituted, wherein vertical section of loading plate (14) empty set on feeding shaft (15) top, the feeding shaft Lower part and the mounting platform (13) it is fixed, and the second glass reinforced plastic is lower than the first glass with the loading plate (14) in loading assemblies Loading plate (14) in steel band loading assemblies;Cloth glue bar (10), the cloth glue are equipped on the inside of the second glass reinforced plastic band loading assemblies Bar is fixed on vertically on the mounting platform (13);
Glass reinforced plastic band slope driving set (16) empty set is in the mould shaft (2) top, glass reinforced plastic band slope driving Set upper side is fixed with the Vertical Rack (1) upper end, and lower end of the glass reinforced plastic with slope driving set (16) is inclined-plane, which exists On same root helix, and the glass reinforced plastic band can be pushed down on, and glass reinforced plastic band is made to be helically wound around the mould shaft (2) Outside;It is equipped with a fiberglass reinforced plastic pressurized wheel (17), the fiberglass reinforced plastic pressurized vertically below glass reinforced plastic band slope driving set (16) Wheel is supporting roller, and is mounted on the mounting platform (13) upper surface, and fiberglass reinforced plastic pressurized wheel (17) energy by mounting rack (18) The spiral shape glass reinforced plastic band wound outside compaction mold axis (2);
The annular reinforcing fiber yarn arranging loop (50) is located at mounting platform (13) lower surface, the annular reinforcing fiber yarn arranging loop The annular reinforcing fiber for being impregnated with resin can be wrapped in outside the spiral shape glass reinforced plastic band, to form the round tube.
It designs using the above structure, round tube formation mechanism can be effectively formed round tube, so that fiber is attached to outside round tube Face, and the structure of this round tube formation mechanism is simple, high reliablity, and is easy to implement.Certainly, in the specific implementation process, may be used also Round tube formation mechanism in the form of using other structures, is not limited only to structure described in the present embodiment.
In the present case, the traction device is interior traction device, and including support tube (19) and live spindle (28), wherein Support tube (19) is coaxially installed in the mould shaft (2) lower end, and the support tube is circumferentially arranged with one group of axial bar hole, each axis A traction chain (20) is equipped with into strip-shaped hole, the outer surface of each chain link of the traction chain is equipped with a traction blob of viscose (21);The every traction chain (20) is located between drive sprocket (22) and driven sprocket (23), the drive sprocket with it is corresponding Output chain gear on speed changer (24) output shaft engages, input bevel gear (25) and vertical short axle on the transmission input shaft (26) bevel gear (27) of lower end often engages, and vertical short axle (26) is installed in the live spindle (28) lower end, and live spindle (28) it is coaxially located in the centre bore of the mould shaft (2), and mould shaft (2) can be followed to rotate synchronously.
Using the above structure, the traction device in the present embodiment is drawn using interior mode of traction, so as to effectively, can Pipeline is driven to move down by ground.Certainly, in the specific implementation process, the traction device of other structures form can also be used, Such as external traction apparatus, it is not limited to structure described in the present embodiment.
In the present case, the fiber winding machine structure is cross winding mechanism, and is circumferentially arranged along the mould shaft (2), and Including fiber winding head (29) and feed screw nut's assembly, wherein there is fiber via hole on fiber winding head (29);The fiber winding Head (29) be slidably matched with vertical guide rod (30), which is fixed on mounting base (31), and mounting base with it is described vertical Rack (1) is fixed, and fiber winding head (29) is connected by the feed screw nut's assembly with mounting base (31), and can be in screw rod spiral shell The lower lifting of female component effect.
Using the above structure, cross winding may be implemented, and the structure of fiber winding machine structure is simple, it is easy to implement, reliably Property it is high.
The utility model has the advantages that traditional horizontal type structure is adjusted to present vertical structure by the present invention, fiber is prevented from this way Be biased to mould shaft side, thus can reinforced composite pipeline structural strength;And vertical structure of the invention and quartz The organic cooperation of sand sand adding mechanism, also can make quartz sand add sand closely knit, thus increase quartz sand plus sand thickness, it thus can be effective The usage amount of fiber is reduced, to achieve the purpose that reduce composite material conduit production cost, and then is effectively overcome existing horizontal The defect of composite material tube pipeline production line.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the partial enlarged view of part A in Fig. 1.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As shown in Figure 1, 2, a kind of vertical composite material tube pipeline production line, mainly by Vertical Rack 1, mould shaft 2, tubular It is constituted at mechanism, fiber winding machine structure and quartz sand sand adding mechanism.Wherein, the upper end of Vertical Rack 1 and the mould being vertically arranged Tool 2 upper end of axis is rotatably assorted, which can rotate under rotating electric machine drive.1 top of Vertical Rack is formed equipped with round tube Glass reinforced plastic band can be wrapped on mould shaft 2 by mechanism, the round tube formation mechanism, and formed one on mould shaft 2 and continued downwards Mobile round tube, and the round tube follows 2 synchronous rotary of mould shaft.
Round tube formation mechanism includes mounting platform 13, glass reinforced plastic band slope driving set 16 and annular reinforcing fiber yarn arranging loop 50, wherein mounting platform 13 is installed on Vertical Rack 1, and the top surface of the mounting platform 13 is equipped with the first glass reinforced plastic band loading assemblies With the second glass reinforced plastic band loading assemblies, the structure of the two loading assemblies is equal, and the second glass reinforced plastic loading assemblies are located at first On the inside of glass reinforced plastic loading assemblies.Second glass reinforced plastic loading assemblies are made of loading plate 14 and feeding shaft 15, and wherein loading plate 14 is empty The vertical section on 15 top of feeding shaft is covered, the lower part of the feeding shaft 15 and mounting platform 13 are fixed, and the second glass reinforced plastic band feeding Loading plate 14 in component is lower than the first glass reinforced plastic with the loading plate 14 in loading assemblies.In the second glass reinforced plastic with loading assemblies Inside is equipped with cloth glue bar 10, which is fixed on vertically on mounting platform 13.
Glass reinforced plastic band slope driving covers 16 empty sets on 2 top of mould shaft, upper end of the glass reinforced plastic with slope driving set 16 with 1 upper end of Vertical Rack is fixed.Glass reinforced plastic with slope driving set 16 lower end be inclined-plane, the inclined-plane on same root helix, and Glass reinforced plastic band can be pushed down on, and glass reinforced plastic band is made to be helically wound around 2 outside of mould shaft.Under glass reinforced plastic band slope driving set 16 Fang Shuzhi is equipped with a fiberglass reinforced plastic pressurized wheel 17, which is supporting roller, and is mounted on by mounting rack 18 13 upper surface of assembling platform, and the spiral shape glass reinforced plastic band wound outside 17 energy compaction mold axis 2 of fiberglass reinforced plastic pressurized wheel.Annular enhancing Fiber yarn arranging loop 50 is located at the lower surface of mounting platform 13, which can will be impregnated with the annular of resin Reinforcing fiber is wrapped in outside spiral shape glass reinforced plastic band, to form round tube.
As shown in Figure 1, the Vertical Rack 1 below round tube formation mechanism is equipped with fiber winding machine structure and heating device 11, Wherein the fiber for being impregnated with resin is wrapped in outside circumferential fiber by fiber winding machine structure, and heating device 11 is located at fiber winding Below mechanism, and it will be wrapped in the fiber-heated solidification outside circumferential fiber, to form composite material conduit.
Fiber winding machine structure is cross winding mechanism, and along the circumferential setting of mould shaft 2, and including fiber winding head 29 and silk Stem nut component wherein has fiber via hole on fiber winding head 29;Fiber winding head 29 is slidably matched with vertical guide rod 30, this is perpendicular Straight guide rod is fixed in mounting base 31, and mounting base and Vertical Rack 1 are fixed, and fiber winding head 29 passes through feed screw nut's assembly It is connected with mounting base 31, and can be gone up and down under feed screw nut's assembly effect.
Add as shown in Figure 1, the Vertical Rack 1 between round tube formation mechanism and fiber winding machine structure is equipped with a quartz sand Sand mechanism, the quartz sand sand adding mechanism include quartz sand conveyer belt 4 and rotation seat 7, in which: 4 lower section of quartz sand conveyer belt is vertical Equipped with one plus sand hopper 5, which, which is transported to the quartz sand containing resin, adds in sand hopper 5.Add 5 empty set of sand hopper In 2 outside of mould shaft, sand hopper 5 should be added to be equipped with vibrator 6, in the present case, vibrator 6 is located on the outer wall for adding sand hopper 5.Add sand 5 outer walls that struggle against are fixed with 7 top of rotation seat, which is rotatably assorted with the support base 8 on Vertical Rack 1, and rotation seat 7 can It is rotated synchronously under driving assembly driving with mould shaft 2, so that quartz sand is added to outside round tube.5 lower end of sand hopper is added coaxially to set There is circumferential fiber yarn arranging loop 9,9 empty set of circumferential direction fiber yarn arranging loop is in the outside of mould shaft 2, and by circumferential fiber cloth in quartz sand Outside, to catch quartz sand.
It will be seen from figure 1 that traction device is coaxially fixed on the lower end of mould shaft 2, which draws composite material Pipeline moves down.Vertical Rack 1 below traction device is equipped with a cutting machine 12, this cutting machine 12 can cut off logical The composite material conduit crossing the composite material conduit of the cutting machine, and cutting is carried by travelling bogie and is transported in time.
In the present case, traction device is interior traction device, and including support tube 19 and live spindle 28, wherein support tube 19 Coaxially it is installed in 2 lower end of mould shaft, which is equipped with one in each axial bar hole circumferentially arranged with one group of axial bar hole The outer surface of root traction chain 20, each chain link of the traction chain is equipped with a traction blob of viscose 21.Every traction chain 20 is located at Between drive sprocket 22 and driven sprocket 23, which engages with the output chain gear on corresponding 24 output shaft of speed changer, should Input bevel gear 25 on transmission input shaft often engages with the bevel gear 27 of vertical 26 lower end of short axle.Vertical short axle 26 is installed in 28 lower end of live spindle, and live spindle 28 is coaxially located in the centre bore of mould shaft 2, and mould shaft 2 can be followed to rotate synchronously.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not limitation with the present invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (3)

1. a kind of vertical composite material tube pipeline production line, it is characterised in that: neutral including Vertical Rack (1) and traction device Open frame (1) upper end is rotatably assorted with mould shaft (2) upper end being vertically arranged, which can be under rotating electric machine drive Rotation;Vertical Rack (1) top is equipped with round tube formation mechanism, which can be wrapped in glass reinforced plastic band described On mould shaft (2), and a round tube persistently moved down is formed on mould shaft (2), and the round tube follows mould shaft (2) same Step rotation;
Vertical Rack (1) below the round tube formation mechanism is equipped with fiber winding machine structure and heating device (11), wherein soaking Profit has the fibrous inside of resin to be provided with circumferential fiber, and the fiber for being impregnated with resin is wrapped in the circumferential direction by fiber winding machine structure Outside fiber, heating device (11) is located at below the fiber winding machine structure, and fiber-heated outside circumferential fiber by being wrapped in Solidification, to form composite material conduit;
The traction device is coaxially fixed on mould shaft (2) lower end, and traction device traction composite material conduit moves down;Institute It states the Vertical Rack (1) below traction device and is equipped with a cutting machine (12), this cutting machine can cut through the cutting Composite material conduit at machine, and the composite material conduit cut is carried and is transported by travelling bogie;
Vertical Rack (1) between the round tube formation mechanism and fiber winding machine structure is equipped with a quartz sand sand adding mechanism, The quartz sand sand adding mechanism includes quartz sand conveyer belt (4) and rotation seat (7), in which: perpendicular below the quartz sand conveyer belt (4) Straight to be equipped with one plus sand hopper (5), which, which is transported to the quartz sand containing resin, adds in sand hopper (5);It is described to add Sand hopper (5) empty set should add sand hopper to be equipped with vibrator (6) outside mould shaft (2), and add sand hopper (5) outer wall and the rotation Seat (7) top is fixed, which is rotatably assorted with the support base (8) on the Vertical Rack (1), and rotation seat (7) can be Driving assembly driving is lower and mould shaft (2) rotates synchronously, so that quartz sand is added to outside the round tube;Described plus sand hopper (5) Lower end is coaxially provided with circumferential fiber yarn arranging loop (9), which covers outside the mould shaft (2), and by ring To fiber cloth outside quartz sand, to catch quartz sand;
The round tube formation mechanism includes mounting platform (13), glass reinforced plastic band slope driving set (16) and annular cloth of reinforcement fibers yarn Ring (50), wherein mounting platform (13) is installed on the Vertical Rack (1), which is equipped with the first glass reinforced plastic band Loading assemblies and the second glass reinforced plastic band loading assemblies, the structure of the two loading assemblies is equal, and the second glass reinforced plastic loading assemblies On the inside of the first glass reinforced plastic loading assemblies;The second glass reinforced plastic loading assemblies are by loading plate (14) and feeding shaft (15) structure At, wherein vertical section of loading plate (14) empty set on feeding shaft (15) top, the lower part of the feeding shaft and the mounting platform (13) fixed, and the second glass reinforced plastic is lower than the first glass reinforced plastic with the feeding in loading assemblies with the loading plate (14) in loading assemblies Disk (14);It is equipped with cloth glue bar (10) on the inside of the second glass reinforced plastic band loading assemblies, which is fixed on the installation vertically On platform (13);
Glass reinforced plastic band slope driving set (16) empty set is put in the mould shaft (2) top, glass reinforced plastic band slope driving End is fixed with the Vertical Rack (1) upper end, and lower end of the glass reinforced plastic with slope driving set (16) is inclined-plane, and the inclined-plane is same On root helix, and the glass reinforced plastic band can be pushed down on, and glass reinforced plastic band is made to be helically wound around the mould shaft (2) outside Face;It is equipped with a fiberglass reinforced plastic pressurized wheel (17), the fiberglass reinforced plastic pressurized wheel vertically below glass reinforced plastic band slope driving set (16) For supporting roller, and it is mounted on the mounting platform (13) upper surface by mounting rack (18), and fiberglass reinforced plastic pressurized wheel (17) can press The spiral shape glass reinforced plastic band wound outside tight mould shaft (2);
The annular reinforcing fiber yarn arranging loop (50) is located at mounting platform (13) lower surface, which can incite somebody to action The annular reinforcing fiber for being impregnated with resin is wrapped in outside the spiral shape glass reinforced plastic band, to form the round tube.
2. vertical composite material tube pipeline production line according to claim 1, it is characterised in that: the traction device is interior leads Leading-in device, and including support tube (19) and live spindle (28), wherein support tube (19) is coaxially installed under the mould shaft (2) End, the support tube are equipped with a traction chain (20), this leads circumferentially arranged with one group of axial bar hole in each axial bar hole The outer surface for drawing each chain link of chain is equipped with a traction blob of viscose (21);The every traction chain (20) is located at drive sprocket (22) between driven sprocket (23), which engages with the output chain gear on corresponding speed changer (24) output shaft, the change Input bevel gear (25) on fast device input shaft often engages with the bevel gear (27) of vertical short axle (26) lower end, vertical short axle (26) It is installed in the live spindle (28) lower end, and live spindle (28) is coaxially located in the centre bore of the mould shaft (2), and can Mould shaft (2) are followed to rotate synchronously.
3. vertical composite material tube pipeline production line according to claim 1, it is characterised in that: the fiber winding machine structure is Cross winding mechanism, and be circumferentially arranged along the mould shaft (2), and including fiber winding head (29) and feed screw nut's assembly, There is fiber via hole on middle fiber winding head (29);The fiber winding head (29) is slidably matched with vertical guide rod (30), this is vertical Guide rod is fixed on mounting base (31), and mounting base and the Vertical Rack (1) are fixed, and fiber winding head (29) is described in Feed screw nut's assembly is connected with mounting base (31), and can go up and down under feed screw nut's assembly effect.
CN201610765130.3A 2016-08-30 2016-08-30 A kind of vertical composite material tube pipeline production line Active CN106426977B (en)

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