CN114193802B

CN114193802B - Composite pipe production equipment

Info

Publication number: CN114193802B
Application number: CN202111507938.9A
Authority: CN
Inventors: 汪鹏跃; 周章湧; 徐军标; 苏迁; 彭祥瑶; 冀雄
Original assignee: Ad Co ltd
Current assignee: Ad Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2023-05-16
Anticipated expiration: 2041-12-10
Also published as: CN114193802A; WO2023103106A1

Abstract

The invention provides production equipment for a composite pipe, and belongs to the technical field of composite pipes. The composite pipeline solves the problem of lower strength of the composite pipeline in the prior art. The composite pipe production equipment comprises a forming die, a supporting seat, an outer pipe and a winding machine, wherein reinforcing fibers can be coated on the outer peripheral wall of the outer pipe, a forming cavity channel is formed between an outer die sleeve and a core die of the forming die, one end of the outer pipe extends into the outer die sleeve, an annular cavity channel opposite to the forming cavity channel is formed between the outer peripheral wall of the outer pipe and the inner peripheral wall of the outer die sleeve, a roller positioned on the lower side of the outer pipe is arranged on the supporting seat, the roller can form rolling support on the reinforcing fibers on the outer peripheral wall of the outer pipe, and an adjusting structure capable of adjusting the height position of the roller is further arranged on the supporting seat. The invention can make the produced composite pipe have higher strength and quality.

Description

Composite pipe production equipment

Technical Field

The invention belongs to the technical field of composite pipelines, and relates to composite pipe production equipment.

Background

With the continuous expansion of construction of cities and continuous exploitation of oil and natural gas, the demand for transportation pipelines is also increasing. Traditional steel pipelines have poor corrosion resistance and are not easy to carry, and cannot adapt to the current requirements. Meanwhile, the main petroleum and natural gas in China are mostly distributed in deserts, marshes or mountainous areas, the natural environment is severe, the influence of the natural environment is serious when steel pipelines are paved, and the conveying pipelines are extremely easy to damage due to ground subsidence, landslide and other reasons. The fiber reinforced composite pipeline has the advantages of low density, high strength, excellent mechanical properties, such as good processing performance, good chemical stability resistance, heat resistance and the like, and can be stably used for a long time in some complex environments, so that the fiber reinforced composite pipeline is widely applied.

The existing fiber reinforced composite pipe generally comprises an inner layer, a reinforcing layer and an outer layer from inside to outside in sequence, wherein the inner layer is a pipe blank extruded by a plastic extruder, the reinforcing layer is reinforcing fibers wound on the inner layer in a winding mode, so that the aim of improving the structural strength of a plastic pipeline is fulfilled, and the outer layer is a plastic layer attached to the reinforcing layer. While the prior devices for manufacturing the reinforced fiber composite pipeline have different structures, the manufacturing principle is basically consistent, namely, a tube blank is extruded by an extruder, then the reinforced fiber is wound on the surface of the tube blank by a winding machine, and the reinforced fiber composite pipeline is formed by bonding the reinforced fiber composite pipeline by an adhesive. A plastic pipeline molding assembly line (application number: 201811640324.6; application publication number: CN 109664479A) as disclosed in Chinese patent literature, wherein the outflow line enters a molding die through plasticizing raw materials in a first extruder and forms the plasticizing raw materials into an inner pipe, then the inner pipe is shaped and cooled through a first shaping machine, then the inner pipe is sequentially subjected to shaping and cooling through a cloth belt machine and a winding machine, the cloth belt machine axially attaches a first reinforcing belt to the surface of the inner pipe, and the winding machine spirally winds a second reinforcing belt to the surface of the inner pipe. And then, the inner pipe moves into a composite die, the second extruder coats the plasticized raw material on the inner pipe and forms a composite pipe, and finally, the composite pipe moves through a second setting machine and is set and cooled. The composite pipeline produced by the equipment is required to ensure that the prepared pipeline reaches the required strength, and is usually required to be wound in multiple layers, the thickness of the continuous fibers is small, the bonding layer formed by directly winding the continuous fibers on the surface of the inner pipe is small, meanwhile, the bonding force of the contact area between the fibers is limited or the fibers are not bonded at all due to the fact that the fibers of each layer are wound in sequence, the bonding between the layers is weak, and the quality, particularly the strength of the composite pipeline is limited.

Disclosure of Invention

The invention aims at solving the problems in the prior art, and provides a composite pipe production device, which solves the technical problems that: how to make the composite pipe produced by the production equipment have higher strength and quality.

The aim of the invention can be achieved by the following technical scheme: the utility model provides a compound pipe production facility, includes forming die, be formed with the shaping die cavity between forming die's the outer die sleeve and the mandrel, its characterized in that, this production facility still includes supporting seat, outer tube and can wrap up the coiling machine on outer tube peripheral wall with reinforcing fiber, in the outer die sleeve is stretched into to the one end of outer tube, form between the outer peripheral wall of outer tube and the inner peripheral wall of outer die sleeve and just to the annular cavity of shaping die cavity, be equipped with the gyro wheel that is located the outer tube downside on the supporting seat, the gyro wheel can form rolling support to the reinforcing fiber on the outer tube peripheral wall, still be equipped with the adjustment structure that can adjust gyro wheel height position on the supporting seat.

The mold forming cavity channel is used for allowing the molten material to flow through, and the molten material stretches out of the forming mold after forming a pipeline with a required section shape in the forming cavity channel. In this production facility, the coiling machine is direct with reinforcing fiber cladding on the periphery wall of outer tube, because the one end of outer tube stretches into in the outer die sleeve this moment, and form between the periphery wall of outer tube and the interior periphery wall of outer die sleeve with the just annular cavity way of shaping die channel, such design can make the reinforcing fiber on the outer periphery wall of outer tube more smooth and easy entering forming die in, reduce the in-process of reinforcing fiber entering forming die to reinforcing fiber winding angle, winding tensioning force's influence, and then promote the quality and the intensity of composite pipe product. Simultaneously, the reinforcing fiber layer on the outer peripheral wall of the outer tube can pass through the forming cavity and be combined with the melting material in the forming cavity, then the fiber reinforced composite pipeline is formed to extend out of the outlet end of the forming cavity, and then shaping and cooling are carried out.

For the special pipeline forming mode of the production equipment, because the reinforcing fiber needs to enter the forming cavity channel to be combined with the molten material to form the composite pipe, concentricity of the outer pipe and the outer mold sleeve needs to be ensured, so that the annular cavity channel is opposite to the forming cavity channel, and the reinforcing fiber can smoothly pass through. Therefore, this production facility is through setting up the gyro wheel on the supporting seat, rely on the gyro wheel to form rolling support to the reinforcing fiber on the outer peripheral wall of outer tube for the reinforcing fiber is by the in-process of forward tractive, and the gyro wheel can carry out passive rotation, and then avoids causing hard friction to the reinforcing fiber and lead to product quality to reduce, simultaneously, through the high position of adjusting structure adjusting gyro wheel, can adjust the outer tube for the concentricity of outer die sleeve, and the outer tube can receive the support in the production process, and then guarantees that production manufacturing process outer tube and outer die sleeve have higher concentricity all the time, and then promotes the quality of product.

In addition, the production equipment of the composite pipe is completely different from the production principle of the existing equipment, the production equipment is used for extruding a pipe blank through an extruder, then winding reinforcing fibers on the surface of the pipe blank through a winding machine, and forming a molten material and continuous reinforcing fibers into a composite pipe in one step in a forming die, so that the molten material can be compatible and permeated with the reinforcing fibers in the forming die, the bonding effect is better, the strength is higher, and the problem that the strength of the pipe is weakened due to the fact that interlayer bonding of the composite pipe produced by the existing equipment is not firm is solved.

In the composite pipe production equipment, the production equipment further comprises an extruder, a core pipe is arranged in the outer pipe in a penetrating mode, the core pipe, the outer pipe and the outer die sleeve are arranged coaxially, the inlet end of the core pipe is communicated with the extruder, and the outlet end of the core pipe extends into the outer die sleeve and is communicated with the forming cavity of the forming die. The core pipe is communicated with the extruder, so that the molten material extruded by the extruder can enter the core pipe, and the molten material flowing out of the core pipe finally enters a forming cavity of the forming die. The core tube is arranged in the outer tube, so that the core tube, the outer tube and the outer die sleeve are coaxially arranged, the movement mode of the molten material flowing out of the core tube is consistent with that of the reinforced fibers, the molten material can be better combined with the reinforced fibers in the forming cavity, the molten material is uniformly distributed in the circumferential direction of the forming cavity, and the quality of the manufactured composite pipeline is good.

In the composite pipe production equipment, a plurality of support sleeves are sleeved on the peripheral wall of the core pipe, the peripheral wall of each support sleeve is propped against the inner peripheral wall of the outer pipe, and the plurality of support sleeves are arranged at intervals in sequence along the length direction of the core pipe. The molten material flowing out of the core tube needs to be diffused all around along the radial direction in the forming die, so that higher concentricity between the core tube and the outer die sleeve needs to be ensured, the diffusion is uniform, and the product quality is improved. Because the core pipe length is longer, set gradually a plurality of support cover through the length direction of core pipe for the core pipe receives the support of support cover, and stability has been guaranteed and has set up with outer tube coaxial all the time. Moreover, the supporting sleeve enables the core pipe and the outer pipe to be relatively fixed, so that the height of the core pipe can be synchronously adjusted in the process of adjusting the height of the outer pipe through the adjusting mechanism, and further the core pipe and the outer pipe are guaranteed to have higher concentricity with the outer mold sleeve. Of course, in the actual operation process, if the concentricity of the outer die sleeve and the outer tube in the horizontal direction has deviation, the deviation can be solved by adjusting the horizontal position of the outer die sleeve.

In the above-mentioned composite pipe production facility, every support cover all includes public cover and female cover, the core pipe is that a plurality of concatenation pipes splice in proper order end to end and forms, in the concatenation department of arbitrary two concatenation pipes, the tip cover of one concatenation pipe is equipped with foretell public cover, and the tip cover of another concatenation pipe is equipped with female cover, link firmly through the fastener between public cover and the female cover. In the scheme, the length of the core pipe is longer, and can reach more than 10 meters generally, and the core pipe is formed by sequentially splicing a plurality of spliced pipes end to end, so that the problems of complex processing and difficult guarantee of coaxiality caused by once-forming of the longer core pipe are avoided. Through setting up public cover and female cover in every concatenation department, connect through the fastener between public cover and the female cover for the connection between the adjacent concatenation pipe is not only stable good, and after each concatenation pipe is connected well and is formed the core pipe moreover, can make the core pipe have higher axiality.

In the above-mentioned composite pipe production facility, female cover has the annular concave shoulder that encircles its hole setting on the terminal surface of public cover, have the annular flange of embedding annular concave shoulder on the public cover, set up a plurality of bolt via holes that set gradually along its circumference on the public cover, set up a plurality of bolt holes that set up with bolt via hole one-to-one on the female cover, all wear to be equipped with foretell fastener in every bolt via hole, the fastener is bolt and the fastener passes bolt via hole and corresponding bolt hole threaded connection. The male sleeve and the female sleeve belong to small-sized parts, and the machining precision of the male sleeve and the female sleeve is easy to ensure. Therefore, the male sleeve and the female sleeve are matched through the annular flange and the annular concave shoulder, so that the female sleeve and the male sleeve can have higher matching precision, and the splicing of two spliced pipes can be ensured to have higher coaxiality. Meanwhile, the male sleeve and the female sleeve are connected through a plurality of bolts, so that the male sleeve and the female sleeve are connected stably, and the coaxiality of the equipment in the running process cannot be changed.

In the above composite pipe production equipment, the supporting seat comprises a base and a roller seat, wherein the base is provided with a vertically arranged sliding rail, the roller seat is connected with a sliding block in sliding connection with the sliding rail, and the roller is arranged at the top of the roller seat. Through setting up sliding block and slide rail sliding connection, rely on the sliding block to reciprocate to drive the gyro wheel and carry out altitude mixture control, the mode makes the gyro wheel reciprocate the process receive the direction of slide rail for the process of gyro wheel altitude mixture control is stable, the precision is high.

In the above-mentioned composite pipe production facility, the regulation structure includes lead screw, worm and with worm wheel that worm engaged with, the lead screw is vertical to be set up and with gyro wheel seat threaded connection, the worm wheel cover is established on the lead screw and is fixed with lead screw circumference, be connected with the rocking handle that drives worm pivoted on the worm. During operation, the rocking handle is rotated to drive the worm to rotate, so that the worm wheel and the screw rod are driven to synchronously rotate, and the screw rod is in threaded connection with the roller seat, so that the up-and-down movement of the roller seat can be realized through the rotation of the screw rod. Through worm wheel worm gear cooperation, realized reducing gear, not only laborsaving like this, can realize the auto-lock after adjusting moreover to can realize the fine setting of gyro wheel high position, can reach higher regulation precision, make the gyro wheel when forming the support to the reinforcing fiber on the outer peripheral wall of outer pipe, can not produce great pressure again and lead to reinforcing fiber impaired, and then guarantee that the product quality is high.

In the above composite pipe production equipment, the roller seat is provided with a rotating shaft which is horizontally arranged, the axial direction of the rotating shaft is perpendicular to the axial direction of the outer pipe, and the roller is columnar and is connected to the roller seat through the rotating shaft. The design makes the rotation direction of the roller consistent with the movement direction of the reinforcing fiber, and the roller can passively rotate in the processing process, so that the product quality is reduced due to hard friction on the reinforcing fiber is avoided.

In the composite pipe production equipment, the diverter is arranged in the outer die sleeve, and the outlet end of the core pipe is opposite to the diverter. The outlet end of the core tube is opposite to the flow divider, so that the flow divider can diffuse the molten material flowing out of the core tube to the periphery along the radial direction, the further heating and plasticizing are facilitated, the combination effect of the reinforced fibers and the molten material is improved, and the strength of the pipeline is further improved.

In the composite pipe production equipment, the outlet end of the core pipe is fixedly sleeved with the connecting sleeve, the outer peripheral wall of the connecting sleeve abuts against the inner peripheral wall of the outer pipe, and the flow divider is connected to the connecting sleeve through bolts. Through such design, on the one hand, the stability of core pipe exit end has been guaranteed, on the other hand has realized the installation of shunt, and makes the outer perisporium of shunt and the interior perisporium of external mold cover form the clearance that supplies reinforcing fiber to pass. Preferably, eight bolt through holes are formed in the connecting sleeve along the circumferential direction of the connecting sleeve, eight bolt holes which are arranged in one-to-one correspondence with the bolt through holes are formed in the shunt, bolts are respectively arranged in the bolt through holes in a penetrating mode, and the bolts penetrate through the bolt through holes to be in threaded connection with the corresponding bolt holes.

Compared with the prior art, the production equipment of the composite pipe has the following advantages:

1. this production facility is through setting up the gyro wheel on the supporting seat, relies on the gyro wheel to form rolling support to the reinforcing fiber on the outer peripheral wall of outer tube for reinforcing fiber is by the in-process of forward traction, and the gyro wheel can carry out passive rotation, and then avoids causing hard friction to the reinforcing fiber and lead to product quality to reduce, simultaneously, through the high position of adjusting structure adjusting gyro wheel, can adjust the outer tube for the concentricity of outer die sleeve, and the outer tube can receive the support in the production process, and then guarantees that production manufacturing process outer tube and outer die sleeve have higher concentricity all the time, and then promotes the quality of product.

2. The production equipment forms the melting material and the continuous reinforcing fibers into the composite pipeline in one step in the forming die, so that the melting material can be compatible and permeated with the reinforcing fibers in the forming die, the combination effect is better, the strength is higher, and the problem that the strength of the pipeline is weakened due to weak interlayer bonding of the composite pipeline produced by the existing equipment is solved. Therefore, the composite pipeline produced by the production equipment has the advantages of good quality, high strength and high toughness.

Drawings

Fig. 1 is a front view of the present production apparatus.

Fig. 2 is a partial cross-sectional view of the present production apparatus.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic perspective view of the present production apparatus.

Fig. 5 is a partial cross-sectional view at a forming die.

Fig. 6 is a front view of the support base and the roller.

Fig. 7 is a front view of a supporting seat and a roller in a second embodiment of the invention.

In the figure, 1, a forming die; 1a, a core mold; 1b, an outer die sleeve; 1c, forming a cavity channel; 1d, an annular cavity; 1e, a shunt; 2. a support base; 21. a base; 22. a roller seat; 23. a slide rail; 24. a sliding block; 25. a rotating shaft; 3. an outer tube; 4. a winding machine; 5. a roller; 6. an extruder; 7. a core tube; 71. splicing pipes; 8. a support sleeve; 81. a male sleeve; 811. an annular flange; 812. bolt through holes; 82. a female sleeve; 821. an annular concave shoulder; 822. bolt holes; 9. a fastener; 10. a screw rod; 11. a rocking handle; 12. connecting sleeves; 13. an adjusting plate; 14. an adjusting bolt; .

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Example 1

As shown in fig. 1, 2 and 3, the present composite pipe production apparatus includes a forming die 1, a support base 2, an extruder 6, an outer pipe 3, a winding machine 4 for wrapping reinforcing fibers on the outer peripheral wall of the outer pipe 3, and the like. Core pipe 7 wears to be equipped with in the outer tube 3, is equipped with the gyro wheel 5 that is located outer tube 3 downside on the supporting seat 2, and the gyro wheel 5 can form rolling support to the reinforcing fiber on the outer peripheral wall of outer tube 3, still is equipped with the regulation structure that can adjust gyro wheel 5 high position on the supporting seat 2.

As shown in fig. 5, the forming mold 1 comprises an outer mold sleeve 1b, a core mold 1a and a flow divider 1e are arranged in the outer mold sleeve 1b, a forming cavity channel 1c is formed between the core mold 1a and the outer mold sleeve 1b, one end of an outer pipe 3 stretches into the outer mold sleeve 1b, an annular cavity channel 1d opposite to the forming cavity channel 1c is formed between the outer peripheral wall of the outer pipe 3 and the inner peripheral wall of the outer mold sleeve 1b, the flow divider 1e is arranged in the outer mold sleeve 1b, and the outlet end of a core pipe 7 is opposite to the flow divider 1 e. The outlet end of the core tube 7 is fixedly sleeved with a connecting sleeve 12, the outer peripheral wall of the connecting sleeve 12 is abutted against the inner peripheral wall of the outer tube 3, and the shunt 1e is connected to the connecting sleeve 12 through bolts. By such a design, on the one hand, stability of the outlet end of the core tube 7 is ensured, and on the other hand, installation of the flow divider 1e is achieved, and the outer peripheral wall of the flow divider 1e and the inner peripheral wall of the outer die sleeve 1b form a gap through which the reinforcing fibers pass. Preferably, eight bolt through holes 822 are formed in the connecting sleeve 12 along the circumferential direction of the connecting sleeve, eight bolt holes 812 are formed in the shunt 1e and are in one-to-one correspondence with the bolt through holes 822, bolts are respectively arranged in each bolt through hole 822 in a penetrating mode, and the bolts penetrate through the bolt through holes 822 and are in threaded connection with the corresponding bolt holes 812.

The support base 2 and the rollers 5 are not illustrated in fig. 4. As shown in fig. 2 to 5, the core tube 7, the outer tube 3 and the outer die sleeve 1b are coaxially arranged, the inlet end of the core tube 7 is communicated with the extruder 6, and the outlet end of the core tube 7 extends into the outer die sleeve 1b and is communicated with the forming cavity 1c of the forming die 1. The outer peripheral wall of the core tube 7 is sleeved with three supporting sleeves 8, the outer peripheral wall of each supporting sleeve 8 abuts against the inner peripheral wall of the outer tube 3, and the three supporting sleeves 8 are arranged at intervals in sequence along the length direction of the core tube 7. The number of support sleeves 8 may be suitably adjusted, such as two, four or five, during the actual manufacturing process.

As shown in fig. 3, each supporting sleeve 8 includes a male sleeve 81 and a female sleeve 82, the core tube 7 is formed by sequentially splicing a plurality of splicing tubes 71 end to end, at the splicing position of any two splicing tubes 71, the end part of one splicing tube 71 is sleeved with the male sleeve 81, the end part of the other splicing tube 71 is sleeved with the female sleeve 82, and the male sleeve 81 and the female sleeve 82 are fixedly connected through a fastener 9. Specifically, the end face of the female sleeve 82 facing the male sleeve 81 is provided with an annular concave shoulder 821 surrounding an inner hole of the female sleeve, the male sleeve 81 is provided with an annular flange 811 embedded in the annular concave shoulder 821, the male sleeve 81 is provided with a plurality of bolt through holes 812 which are sequentially arranged along the circumferential direction of the male sleeve, the female sleeve 82 is provided with a plurality of bolt holes 822 which are arranged in one-to-one correspondence with the bolt through holes 812, each bolt through hole 812 is internally provided with the fastening piece 9 in a penetrating manner, the fastening piece 9 is a bolt, and the fastening piece 9 penetrates through the bolt through holes 812 to be in threaded connection with the corresponding bolt holes 822. The male sleeve 81 and the female sleeve 82 belong to small-sized parts, and the machining precision of the parts is easy to ensure. Therefore, the male sleeve 81 and the female sleeve 82 are matched through the annular flange 811 and the annular concave shoulder 821, so that the female sleeve 82 and the male sleeve 81 can have higher matching precision, and the splicing of the two splicing pipes 71 can be ensured to have higher coaxiality. Meanwhile, the male sleeve 81 and the female sleeve 82 are connected through a plurality of bolts, so that the male sleeve 81 and the female sleeve 82 are connected stably, and the coaxiality of the equipment cannot be changed in the running process.

As shown in fig. 6, the supporting seat 2 includes a base 21 and a roller seat 22, a vertically arranged slide rail 23 is provided on the base 21, a sliding block 24 slidably connected with the slide rail 23 is connected to the roller seat 22, and the roller 5 is provided on the top of the roller seat 22. The roller seat 22 is provided with a rotating shaft 25 which is horizontally arranged, the axial direction of the rotating shaft 25 is vertical to the axial direction of the outer tube 3, and the roller 5 is columnar and is connected to the roller seat 22 through the rotating shaft 25. The adjusting structure comprises a screw rod 10, a worm and a worm wheel meshed with the worm, the screw rod 10 is vertically arranged and in threaded connection with a roller seat 22, the worm wheel is sleeved on the screw rod 10 and is circumferentially fixed with the screw rod 10, and a rocking handle 11 for driving the worm to rotate is connected to the worm. In operation, the rocking handle 11 is rotated to drive the worm to rotate, so as to drive the worm wheel and the screw rod 10 to synchronously rotate, and the screw rod 10 is in threaded connection with the roller seat 22, so that the up-and-down movement of the roller seat 22 can be realized by the rotation of the screw rod 10.

When the composite pipe production equipment is manufactured, the manufactured composite pipe is required to be continuously pulled out of the forming die 1 by a traction machine so as to realize continuous production. The tractor is prior art and is not shown in the figures. The extruder 6 extrudes a melt such as PE into a core tube 7 and into the forming die 1. Meanwhile, the winding machine 4 winds the continuous reinforced fiber on the outer peripheral wall of the outer tube 3 along the circumferential direction, the reinforced fiber coated on the outer peripheral wall of the outer tube 3 continuously enters the forming die 1 under the action of the traction machine, and is combined with the molten material flowing out of the core tube 7 in the forming cavity channel 1c, and then a fiber reinforced composite pipeline is formed and extends from the outlet end of the forming cavity channel 1c, and then shaping and cooling are carried out. In the actual manufacturing process, an axial yarn feeding structure can be further arranged, the axial yarn feeding structure wraps a plurality of continuous reinforcing fibers axially arranged along the outer tube 3 on the peripheral wall of the outer tube 3 to form an axial fiber layer, and the winding machine 4 winds the continuous reinforcing fibers outside the axial fiber layer along the circumferential direction.

Example two

The structure and principle of this embodiment are similar to those of the first embodiment, except that, as shown in fig. 7, the adjusting structure includes an adjusting plate 13 and an adjusting bolt 14, the adjusting plate 13 is horizontally disposed and fixedly connected with a base 21, a vertically disposed slide rail 23 is disposed on the base 21, a slide block 24 slidably connected with the slide rail 23 is connected to a roller seat 22, and a roller 5 is disposed on the top of the roller seat 22. The adjusting bolt 14 is in threaded connection with the adjusting plate 13, the adjusting bolt 14 is vertically arranged, and the tail end face of the rod part of the adjusting bolt 14 abuts against the lower end face of the roller seat 22. By rotating the adjusting bolt 14, the adjusting bolt can move up and down, and then the roller seat 22 is driven to move up and down, so that the height position of the roller 5 is adjusted.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, the forming die is used more herein; 1a, a core mold; 1b, an outer die sleeve; 1c, forming a cavity channel; 1d, an annular cavity; 1e, a shunt; 2. a support base; 21. a base; 22. a roller seat; 23. a slide rail; 24. a sliding block; 25. a rotating shaft; 3. an outer tube; 4. a winding machine; 5. a roller; 6. an extruder; 7. a core tube; 71. splicing pipes; 8. a support sleeve; 81. a male sleeve; 811. an annular flange; 812. bolt holes; 82. a female sleeve; 821. an annular concave shoulder; 822. bolt through holes; 9. a fastener; 10. a screw rod; 11. a rocking handle; 12. the terms connection sleeve etc. do not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.

Claims

1. The production equipment for the composite pipe comprises a forming die (1) and an extruder (6), wherein a forming cavity channel (1 c) is formed between an outer die sleeve (1 b) of the forming die (1) and a core die (1 a), a flow divider (1 e) is arranged in the outer die sleeve (1 b), and the production equipment is characterized by further comprising a supporting seat (2), an outer pipe (3) and a winding machine (4) capable of wrapping reinforcing fibers on the peripheral wall of the outer pipe (3), one end of the outer pipe (3) stretches into the outer die sleeve (1 b), an annular cavity channel (1 d) which is opposite to the forming cavity channel (1 c) is formed between the peripheral wall of the outer pipe (3) and the inner peripheral wall of the outer die sleeve (1 b), a roller (5) positioned on the lower side of the outer pipe (3) is arranged on the supporting seat (2), the roller (5) can form a rolling support for reinforcing fibers on the peripheral wall of the outer pipe (3), and an adjusting structure capable of adjusting the height position of the roller (5) is also arranged on the supporting seat (2). Core pipe (7) are worn to be equipped with in outer tube (3), the entry end of core pipe (7) with extruder (6) intercommunication, the exit end of core pipe (7) stretch into in outer die sleeve (1 b) and with shaping cavity (1 c) intercommunication of forming die (1), have the interval between the outer perisporium of core pipe (7) and the inner perisporium of outer tube (3), the exit end of core pipe (7) is still fixed the cover and is equipped with adapter sleeve (12), the perisporium of adapter sleeve (12) supports and leans on the inner perisporium of outer tube (3), shunt (1 e) are through bolted connection on adapter sleeve (12).

2. The composite tube production apparatus according to claim 1, wherein the core tube (7), the outer tube (3) and the outer jacket (1 b) are arranged coaxially.

3. The composite pipe production device according to claim 2, wherein a plurality of support sleeves (8) are sleeved on the outer peripheral wall of the core pipe (7), the outer peripheral wall of the support sleeves (8) is abutted against the inner peripheral wall of the outer pipe (3), and the plurality of support sleeves (8) are sequentially arranged at intervals along the length direction of the core pipe (7).

4. A composite pipe production device according to claim 3, wherein each supporting sleeve (8) comprises a male sleeve (81) and a female sleeve (82), the core pipe (7) is formed by sequentially splicing a plurality of splicing pipes (71) end to end, the splicing part of any two splicing pipes (71) is provided with the male sleeve (81) in a sleeved mode at the end portion of one splicing pipe (71), the female sleeve (82) is provided with the end portion of the other splicing pipe (71), and the male sleeve (81) and the female sleeve (82) are fixedly connected through a fastener (9).

5. The composite pipe production device according to claim 4, wherein the end face of the female sleeve (82) facing the male sleeve (81) is provided with an annular concave shoulder (821) arranged around an inner hole of the female sleeve, the male sleeve (81) is provided with an annular flange (811) embedded in the annular concave shoulder (821), the male sleeve (81) is provided with a plurality of bolt through holes (812) which are sequentially arranged along the circumferential direction of the male sleeve, the female sleeve (82) is provided with a plurality of bolt holes (822) which are arranged in one-to-one correspondence with the bolt through holes (812), each bolt through hole (812) is internally provided with the fastening piece (9), and the fastening piece (9) is a bolt and is in threaded connection with the corresponding bolt hole (822) through the bolt through hole (812).

6. The composite pipe production device according to any one of claims 1 to 5, wherein the supporting seat (2) comprises a base (21) and a roller seat (22), a vertically arranged sliding rail (23) is arranged on the base (21), a sliding block (24) which is in sliding connection with the sliding rail (23) is connected to the roller seat (22), and the roller (5) is arranged on the top of the roller seat (22).

7. The composite pipe production equipment according to claim 6, wherein the adjusting structure comprises a screw rod (10), a worm and a worm wheel meshed with the worm, the screw rod (10) is vertically arranged and is in threaded connection with the roller seat (22), the worm wheel is sleeved on the screw rod (10) and is circumferentially fixed with the screw rod (10), and a rocking handle (11) for driving the worm to rotate is connected to the worm.

8. The composite pipe production equipment according to claim 6, wherein the roller seat (22) is provided with a rotating shaft (25) horizontally arranged, the axis direction of the rotating shaft (25) is perpendicular to the axis direction of the outer pipe (3), and the roller (5) is columnar and is connected to the roller seat (22) through the rotating shaft (25).

9. A composite pipe production plant according to any one of claims 2 to 5, characterized in that the outlet end of the core pipe (7) is directly opposite the flow divider (1 e).