CN114193803B

CN114193803B - Forming equipment for reinforced and toughened composite pipe

Info

Publication number: CN114193803B
Application number: CN202111509852.XA
Authority: CN
Inventors: 孙华丽; 汪鹏跃; 李海超; 徐军标; 王超峰
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: CN114193803A; WO2023103229A1

Abstract

The invention provides forming equipment for a reinforced and toughened composite pipe, and belongs to the technical field of composite pipes. The composite pipeline solves the problem that the strength of a composite pipeline in the prior art is weaker. This reinforcing and toughening former of compound pipe includes forming die, outer tube support, the outer tube that the level set up and can wrap up the coiling machine on outer tube peripheral wall with reinforcing fiber, and in the tail end of outer tube stretched into forming die, and reinforcing fiber on the outer tube outer wall can be with the compound composite pipe that forms of the melt material that pours into in the forming die and stretch out from forming die's export, the head end of outer tube is connected on outer tube support, and the bottom of outer tube support is connected with the inserts, the inserts have the crotch that is located outer tube support below. The composite pipeline produced by the forming equipment has the advantages of high strength and good toughness.

Description

Forming equipment for reinforced and toughened composite pipe

Technical Field

The invention belongs to the technical field of pipeline production equipment, and relates to a fastener, in particular to a locknut.

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 forming equipment for reinforcing and toughening composite pipes, which solves the technical problems as follows: how to make the composite pipe produced by the forming equipment have higher strength and quality.

The aim of the invention can be achieved by the following technical scheme: the utility model provides a former of compound pipe of reinforcing and toughening, includes forming die, its characterized in that, this former still includes outer tube support, the outer tube that the level set up and can wrap up the coiling machine on outer tube peripheral wall with reinforcing fiber, in the tail end of outer tube stretches into forming die, and reinforcing fiber on the outer tube outer wall can form compound pipeline with the melting material complex that pours into in the forming die and stretch out from forming die's export, the head end of outer tube is connected on outer tube support, the bottom of outer tube support is connected with the inserts, the inserts has the crotch that is located outer tube support below.

In the process of pipeline production, a tractor is required to be used for pulling forward to manufacture a formed pipeline, so that the pipeline continuously extends out of a forming die to realize continuous production. In the forming equipment, the winding machine directly coats the reinforcing fibers on the peripheral wall of the outer tube, combines the reinforcing fibers with the molten materials in the forming die, then forms a fiber reinforced composite pipeline which extends in from the outlet end of the forming die, and then carries out shaping and cooling. Obviously, the production principle of the forming equipment of the composite pipe is completely different from that of the existing equipment, the forming 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.

And to this special pipeline shaping mode of former, because tractor pulling force is very big, can reach tens tons of pulling forces generally, simultaneously because continuous reinforcing fiber cladding is on the periphery wall of outer tube, consequently the pulling force of pulling can be given the outer tube through reinforcing fiber transmission, leads to the outer tube to have the trend of removal, however, to pipeline shaping, even though there is trace removal in the outer tube, also can influence the quality of product. At this moment, through setting up outer tube support, not only realized the installation of outer tube head end, and through connecting the inserts in the bottom of outer tube support, and the inserts have the crotch that is located outer tube support below, like this at the in-process of carrying out equipment installation, can pour the inserts in concrete ground in advance, and then have stronger ground force of grabbing, make outer tube support have higher stability and can not appear horizontal translation because of the effect of traction, guarantee that the outer tube can not appear moving in the equipment operation process, keep higher cooperation precision between outer tube and the forming die, and then guarantee the quality of product.

In the molding equipment for the reinforced and toughened composite pipe, the bottom of the outer pipe bracket is provided with a bottom plate which is horizontally arranged, the embedded part comprises a rod-shaped part which is vertically arranged and a hook part which is connected with the lower end of the rod-shaped part, and the upper end of the rod-shaped part is fixedly connected with the bottom plate. The arrangement of the rod-shaped part is convenient for being connected with the bottom plate, and the hook part can be buried in a deeper position below the ground on the other hand, so that the situation that the ground is cracked under the condition of shallower burying is avoided.

In the molding equipment for the reinforced and toughened composite pipe, the bottom plate is rectangular, and the embedded parts are respectively arranged on at least two side edges of the bottom plate. The forming die, the winding machine, the outer tube supporting frame and the extruder are sequentially arranged along the axial direction of the outer tube. Preferably, at least one of the above-mentioned inserts is provided on the side of the bottom plate close to the direction of the mold, and on both the left and right sides thereof, respectively. Through the design, a plurality of sides of the bottom plate are fixed by the embedded parts, and then the stability of the outer tube support is further improved through the embedded parts at a plurality of different positions, the situation that the outer tube support and the outer tube move due to traction force is avoided, and the product quality is guaranteed to be high.

In the molding equipment for the reinforced and toughened composite pipe, the bottom plate is provided with the through hole for the upper end of the rod-shaped part to pass through, and the upper end of the rod-shaped part is in threaded connection with the first nut pressed on the top surface of the bottom plate. The design can facilitate the installation of the embedded part, so that the manufacturing is convenient and the cost is low.

In the molding equipment of the reinforced and toughened composite pipe, the molding equipment further comprises an extruder and a core pipe penetrating in the outer pipe, wherein the molding die comprises an outer die sleeve and a core die, a molding cavity is formed between the outer die sleeve and the core die, a discharge pipe is connected to a discharge port of the extruder, the head end of the core pipe is fixedly connected to an outer pipe support and is communicated with the discharge pipe, the tail end of the core pipe extends into the molding die and is communicated with the molding cavity of the molding die, and the outer pipe and the core pipe are coaxially arranged with the outer die sleeve. 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 molding equipment of the reinforced and toughened composite pipe, the outer pipe support further comprises a support body, the head end of the outer pipe and the head end of the core pipe are both connected to the support body, the bottom of the support body is provided with a support plate which is horizontally arranged, a rubber pad is paved between the support plate and the bottom plate, a plurality of vertically arranged adjusting bolts are arranged on the edge of the support plate in a penetrating mode, a plurality of nuts II which are in one-to-one correspondence with the adjusting bolts are arranged on the bottom plate, the rod portions of the adjusting bolts penetrate through the support plate and are in threaded connection with the corresponding nuts II, and the heads of the adjusting bolts are propped against the top surface of the support plate. The forming die for manufacturing the pipeline is generally horizontally arranged, so that the levelness of the outer pipe and the core pipe is ensured firstly for keeping concentricity with the outer die sleeve of the forming die. At this time, through this design, aim at makes the height of support body can be adjusted, and then adjusts the height of outer tube and core tube head end to guarantee the levelness of outer tube and core tube. Specifically, by tightening the adjusting bolt, the rubber pad can be pressed downwards, and at the moment, the supporting plate is shifted downwards in a micro way by means of micro deformation of the rubber pad, and the head ends of the outer tube and the core tube are lowered downwards in a micro way; on the contrary, when the adjusting bolt is unscrewed, the rubber pad can rebound and deform to jack up the supporting plate upwards, so that the head ends of the outer tube and the core tube are slightly lifted upwards.

In the molding equipment of the reinforced and toughened composite pipe, the supporting plate is rectangular, the adjusting bolts are respectively arranged on at least two parallel side edges of the supporting plate, a plurality of counter bores corresponding to the nuts II one by one are formed in the bottom surface of the bottom plate, the nuts II are arranged in the corresponding counter bores, and gaskets are further arranged between the nuts II and the bottoms of the counter bores. Preferably, the side edge of the supporting plate, which is close to the direction of the die, and the left side edge and the right side edge are respectively provided with three adjusting bolts. The traction force of the traction machine is transmitted to the frame body through the outer tube, so that the connection between the bottom plate and the supporting plate needs to bear the action of the traction force. The supporting plate and the bottom plate are connected by a plurality of adjusting bolts, so that the design on one hand ensures good connection stability between the bottom plate and the supporting plate by virtue of the plurality of adjusting bolts, and the loosening condition caused by the action of traction force can be avoided; on the other hand, the design also enables that in the adjusting process, according to actual conditions, adjusting part adjusting bolts can be selected to adjust the height or levelness of the supporting plate, so that higher adjusting precision is achieved, and higher concentricity between the outer tube and the core tube and between the outer die sleeve can be ensured after adjustment.

In the molding equipment of the reinforced and toughened composite pipe, the first end of the outer pipe is provided with the first connecting flange, the outer pipe support is fixedly connected with the connecting plate in vertical arrangement, the end face of the first connecting flange is abutted against the side face of the connecting plate, and a plurality of first bolts in threaded connection with the connecting plate are arranged on the first connecting flange along the circumferential direction. Due to the connection structure between the outer tube and the outer tube support, the pulling force is also required to be borne. Therefore, through vertical setting connecting plate on outer tube support, set up flange one simultaneously at the head end of outer tube, flange one is connected through a plurality of bolts with the connecting plate, guarantees that connection stability is good between outer tube and the outer tube support, and then can resist great tractive force and can not appear not hard up condition, avoids the reduction of outer tube and forming die cooperation precision because of the loosening, the aversion of outer tube to guarantee that product quality is good.

In the molding equipment of the reinforced and toughened composite pipe, the connecting plate is provided with the mounting hole, the head end of the core pipe is provided with the second connecting flange, the head end of the core pipe is inserted into the mounting hole, the second connecting flange is abutted against the side face of the connecting plate, a plurality of bolts connected with the connecting plate in a threaded manner are circumferentially arranged on the second connecting flange, and the outlet end of the discharging pipe extends into the mounting hole and is inserted into the port of the core pipe. The head end of core pipe is pegged graft in the mounting hole, and the mounting hole has the location effect to the core pipe, on this basis, and the second connection flange of core pipe head end passes through bolt two and connects on the connecting plate, can further promote the stability of core pipe, makes equipment in the operation, and core pipe stability is good, can effectively guarantee its concentricity between outer tube and the outer die cover, and then guarantees that the molten material distributes evenly in the die cavity way circumference, and then makes the composite conduit pipe wall of making even, of good quality.

In the forming equipment of the reinforced and toughened composite pipe, the mounting hole is a step hole, the end face of the second connecting flange is provided with an annular protruding portion which is matched and spliced with the large-caliber section of the step hole, the inner diameter of the annular protruding portion is the same as the inner diameter of the small-caliber section of the step hole, and the outlet end of the discharging pipe is matched and spliced with the small-caliber section of the step hole and the annular protruding portion. The step hole is matched with the annular protruding part, so that the step hole forms support and radial positioning on the core pipe, the stability of the installation of the core pipe is guaranteed to be good, and the influence of the displacement of the core pipe on the forming quality of the composite pipeline is avoided. The inner diameter of the annular protruding part is the same as the inner diameter of the small-caliber section of the step hole, so that the outlet end of the discharging pipe is matched and spliced with the small-caliber section of the step hole and the annular protruding part, and the discharging pipe has larger splicing depth and good stability, and can be ensured to stably convey the molten material to the core pipe.

Compared with the prior art, the forming equipment of the reinforced and toughened composite pipe has the following advantages:

1. the forming 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 bonding 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.

2. Through set up the embedded part of burying underground on outer tube support for outer tube support has higher stability and can not appear horizontal translation because of the effect of tractive force, guarantees that the outer tube can not appear moving in the equipment operation in-process, keeps higher cooperation precision between outer tube and the forming die, and then guarantees the quality of product.

3. The molding equipment is manufactured and molded through a one-step method, has the advantage of high production efficiency, and can shorten the length of a production line, so that the occupied area of the equipment is small.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

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

FIG. 3 is a schematic illustration of the connection of an outer tube bracket to an outer tube in accordance with the present invention.

Fig. 4 is a cross-sectional view of the bottom of the outer tube support frame of the present invention.

Fig. 5 is a second cross-sectional view of the bottom of the outer tube support of the present invention.

Fig. 6 is an enlarged view at a in fig. 5.

Fig. 7 is an enlarged view of a portion of the top of the outer tube bracket of the present invention.

Fig. 8 is a cross-sectional view of a molding die in the present invention.

In the figure, 1, a forming die; 1a, an outer die sleeve; 1b, a core mold; 1c, forming a cavity channel; 1d, a shunt; 1e, an annular cavity; 2. an outer tube bracket; 21. a bottom plate; 211. a via hole; 212. countersink; 22. a frame body; 23. a support plate; 24. a rubber pad; 25. a connecting plate; 251. a mounting hole; 3. an outer tube; 31. a first connecting flange; 4. a winding machine; 5. an insert; 51. a rod-shaped part; 52. a hook portion; 6. a first nut; 7. an extruder; 8. a discharge pipe; 9. an adjusting bolt; 10. a gasket; 11. a first bolt; 12. a core tube; 121. a second connecting flange; 122. an annular protruding portion; 13. a second bolt; 14. a support sleeve; 15. a support base; 16. a roller; 17. and a second nut.

Detailed Description

The following is a specific embodiment of the present invention and a technical solution of the present invention is further described with reference to the accompanying drawings, but the present invention is not limited to this embodiment.

As shown in fig. 1 and 2, the molding equipment of the reinforced and toughened composite pipe comprises a molding die 1, an extruder 7, an outer pipe bracket 2, an outer pipe 3 horizontally arranged and a winding machine 4 capable of wrapping reinforcing fibers on the peripheral wall of the outer pipe 3, wherein a core pipe 12 is arranged in the outer pipe 3 in a penetrating manner, a discharge pipe 8 is connected to a discharge port of the extruder 7, the head end of the core pipe 12 is communicated with the discharge pipe 8, and after the core pipe 12 is communicated with the extruder 7, molten materials such as PE of molten materials can be provided in the molding die. The tail end of the outer tube 3 stretches into the forming die 1, and the reinforcing fiber on the outer wall of the outer tube 3 can be compounded with the molten material injected into the forming die 1 to form a compound pipeline and stretch out from the outlet of the forming die 1, and the head end of the outer tube 3 is connected to the outer tube bracket 2.

As shown in fig. 3, the outer tube support 2 further includes a frame 22 and a bottom plate 21 disposed horizontally at the bottom, the bottom plate 21 is rectangular, the head end of the outer tube 3 and the head end of the core tube 12 are both connected to the

frame

22, 6 embedded inserts 5 are connected to the bottom plate 21, and specifically, two inserts 5 are disposed on a side edge of the bottom plate 21 near the mold direction, a left side edge of the bottom plate 21, and a right side plate of the bottom plate 21. The design makes the multiple sides of the bottom plate 21 all receive the fixation of the embedded part 5, and then further promotes the stability of the outer tube support 2 through the embedded part 5 at multiple different positions, avoids the condition that the pulling force effect causes the outer tube support 2 and the outer tube 3 to move, and ensures that the product quality is high.

As shown in fig. 4, the insert 5 includes a rod-shaped portion 51 vertically disposed and a hook portion 52 connected to a lower end of the rod-shaped portion 51, and an upper end of the rod-shaped portion 51 penetrates through the ground to be fixedly connected to the base plate 21. Specifically, the bottom plate 21 is provided with a through hole 211 through which the upper end of the rod-shaped portion 51 passes, and the upper end of the rod-shaped portion 51 is screwed with a first nut 6 pressed on the top surface of the bottom plate 21. The arrangement of the hook portion 52 promotes the grip force, so that the insert 5 can bear a large tensile force without moving, and the arrangement of the rod portion 51 makes the hook portion 52 buried in a deep position below the ground, so that the situation that the ground is cracked under the condition of shallow burying is avoided.

As shown in fig. 5, the bottom of the frame 22 is provided with a support plate 23 which is horizontally arranged, the support plate 23 is rectangular, a rubber pad 24 is paved between the support plate 23 and the bottom plate 21, nine vertically arranged adjusting bolts 9 are arranged on the edge of the support plate 23 in a penetrating manner, a plurality of nuts two 17 which are in one-to-one correspondence with the adjusting bolts 9 are arranged on the bottom plate 21, the rod parts of the adjusting bolts 9 penetrate through the support plate 23 and are in threaded connection with the corresponding nuts two 17, and the heads of the adjusting bolts 9 are abutted against the top surface of the support plate 23. Specifically, as shown in fig. 4, three adjusting bolts 9 are respectively arranged on the side edge, close to the direction of the die, of the supporting plate 23 and the left and right side edges, as shown in fig. 6, a plurality of counter bores 212 corresponding to the nuts two 17 one by one are formed on the bottom surface of the bottom plate 21, the nuts two 17 are arranged in the corresponding counter bores 212, a gasket 10 is further arranged between the nuts two 17 and the bottoms of the counter bores 212, and the gasket 10 is preferably a loosening gasket 10. By tightening the adjusting bolt 9, the rubber pad 24 can be pressed downwards, and at the moment, the supporting plate 23 is shifted downwards by a small amount by virtue of the small amount deformation of the rubber pad 24, and the head ends of the outer tube 3 and the core tube 12 are lowered downwards by a small amount; on the contrary, when the adjusting bolt 9 is unscrewed, the rubber pad 24 can rebound and deform to jack up the supporting plate 23 upwards, so that the head ends of the outer tube 3 and the core tube 12 are slightly lifted upwards. By this design, the aim is to allow the height of the frame 22 to be adjusted, and thus the heights of the outer tube 3 and the head end of the core tube 12, to ensure the levelness of the outer tube 3 and the core tube 12. Preferably, as shown in fig. 2, a supporting seat 15 is further arranged between the forming die 1 and the winding machine 4, a roller 16 is arranged on the supporting seat 15, the rotation axis of the roller 16 is perpendicular to the axis of the outer tube 3, and the reinforcing fiber on the peripheral wall of the outer tube 3 can be supported by the rotation of the roller 16.

As shown in fig. 7, the head end of the outer tube 3 is provided with a first connecting flange 31, the outer tube bracket 2 is fixedly connected with a connecting plate 25 which is vertically arranged, the end face of the first connecting flange 31 is abutted against the side face of the connecting plate 25, and a plurality of first bolts 11 which are in threaded connection with the connecting plate 25 are circumferentially arranged on the first connecting flange 31. The first connecting flange 31 is connected with the connecting plate 25 through the first bolts 11, so that good connection stability between the outer tube 3 and the outer tube support 2 is ensured, and further, larger traction force can be resisted without loosening, and the reduction of the matching precision of the outer tube 3 and the forming die 1 caused by loosening and shifting of the outer tube 3 is avoided, so that good product quality is ensured.

As shown in fig. 7, the connecting plate 25 is provided with a mounting hole 251, the head end of the core tube 12 is provided with a second connecting flange 121, the head end of the core tube 12 is inserted into the mounting hole 251, the second connecting flange 121 is abutted against the side surface of the connecting plate 25, the second connecting flange 121 is provided with a plurality of second bolts 13 which are in threaded connection with the connecting plate 25 along the circumferential direction, and the outlet end of the discharging tube 8 extends into the mounting hole 251 and is inserted into the port of the core tube 12. Further, the mounting hole 251 is a step hole, the end face of the second connecting flange 121 is provided with an annular protruding portion 122 which is matched and inserted with the large-caliber section of the step hole, the inner diameter of the annular protruding portion 122 is the same as the inner diameter of the small-caliber section of the step hole, and the outlet end of the discharging pipe 8 is matched and inserted with the small-caliber section of the step hole and the annular protruding portion 122. The inner diameter of the annular protruding portion 122 is the same as that of the small-caliber section of the step hole, so that the outlet end of the material outlet pipe 8 is in matched insertion with the small-caliber section of the step hole and the annular protruding portion 122, and the design ensures that the material outlet pipe 8 has larger insertion depth and good stability, and can ensure that the material outlet pipe stably conveys molten materials to the core pipe 12.

As shown in fig. 8, the forming mold 1 comprises an outer mold sleeve 1a, a core mold 1b and a flow divider 1d fixedly connected to the front end of the core mold 1b are arranged in the outer mold sleeve 1a, the flow divider 1d is connected to a supporting sleeve 14 at the tail end of a core pipe 12 through bolts, and the outer pipe 3 and the core pipe 12 are both coaxially arranged with the outer mold sleeve 1 a. A molding cavity channel 1c is formed between the outer die sleeve 1a and the core die 1b, and the tail end of the core tube 12 extends into the molding die 1 and is opposite to the flow divider 1d, so that the molten material flowing out of the core tube 12 can flow by the flow divider 1d to spread radially and circumferentially so as to flow into the molding cavity channel 1c uniformly. An annular cavity 1e opposite to the molding cavity 1c is formed between the outer peripheral wall of the outer tube 3 and the inner peripheral wall of the outer die sleeve 1a, so that the reinforcing fiber layer on the outer peripheral wall of the outer tube 3 can pass through the molding cavity 1c and be combined with the molten material in the molding cavity 1 c.

When the production equipment of the reinforced and toughened composite pipe 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 7 extrudes the molten material, for example, into a core tube 12 and into the molding 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 12 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.

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, an outer die sleeve; 1b, a core mold; 1c, forming a cavity channel; 1d, a shunt; 1e, an annular cavity; 2. an outer tube bracket; 21. a bottom plate; 211. a via hole; 212. countersink; 22. a frame body; 23. a support plate; 24. a rubber pad; 25. a connecting plate; 251. a mounting hole; 3. an outer tube; 31. a first connecting flange; 4. a winding machine; 5. an insert; 51. a rod-shaped part; 52. a hook portion; 6. a first nut; 7. an extruder; 8. a discharge pipe; 9. an adjusting bolt; 10. a gasket; 11. a first bolt; 12. a core tube; 121. a second connecting flange; 122. an annular protruding portion; 13. a second bolt; 14. a support sleeve; 15. a support base; 16. a roller; 17. nut, etc., but does 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 forming equipment for the reinforced and toughened composite pipe comprises a forming die (1) and is characterized by further comprising an outer pipe bracket (2), an outer pipe (3) horizontally arranged and a winding machine (4) capable of wrapping reinforcing fibers on the peripheral wall of the outer pipe (3), wherein the tail end of the outer pipe (3) extends into the forming die (1), the reinforcing fibers on the outer wall of the outer pipe (3) can be compounded with molten materials injected into the forming die (1) to form a composite pipe and extend out of an outlet of the forming die (1), the head end of the outer pipe (3) is connected to the outer pipe bracket (2), the bottom of the outer pipe bracket (2) is connected with an embedded part (5), and the embedded part (5) is provided with a hook part (52) positioned below the outer pipe bracket (2); the forming equipment further comprises an extruder (7) and a core pipe (12) penetrating through the outer pipe (3), the tail end of the core pipe (12) is communicated with a forming cavity (1 c) of the forming die (1), a discharging pipe (8) is connected to a discharging hole of the extruder (7), a vertically arranged connecting plate (25) is fixedly connected to the outer pipe support (2), a mounting hole (251) is formed in the connecting plate (25), a second connecting flange (121) is arranged at the head end of the core pipe (12), and a plurality of second bolts (13) in threaded connection with the connecting plate (25) are circumferentially arranged on the second connecting flange (121); the mounting hole (251) is a step hole, an annular protruding portion (122) which is matched and spliced with a large-caliber section of the step hole is arranged on the end face of the second connecting flange (121), the inner diameter of the annular protruding portion (122) is the same as the inner diameter of a small-caliber section of the step hole, and the outlet end of the discharging pipe (8) is matched and spliced with the small-caliber section of the step hole and the annular protruding portion (122).

2. The forming device of the reinforced and toughened composite pipe according to claim 1, wherein the bottom of the outer pipe bracket (2) is provided with a bottom plate (21) which is horizontally arranged, the embedded piece (5) further comprises a rod-shaped part (51) which is vertically arranged, the hook part (52) is connected to the lower end of the rod-shaped part (51), and the upper end of the rod-shaped part (51) is fixedly connected with the bottom plate (21).

3. The apparatus for forming reinforced toughened composite pipes as claimed in claim 2, wherein said base plate (21) is rectangular and is provided with said inserts (5) at least on two sides of the base plate (21) respectively.

4. The molding equipment for the reinforced and toughened composite pipe as claimed in claim 2, wherein the bottom plate (21) is provided with a through hole (211) for the upper end of the rod-shaped part (51) to pass through, and the upper end of the rod-shaped part (51) is in threaded connection with a first nut (6) pressed on the top surface of the bottom plate (21).

5. The molding apparatus for reinforcing and toughening composite pipes according to any one of claims 2 to 4, wherein the molding die (1) comprises an outer die sleeve (1 a) and a core die (1 b), the molding cavity (1 c) is formed between the outer die sleeve (1 a) and the core die (1 b), the tail end of the core tube (12) extends into the molding die (1) and is communicated with the molding cavity (1 c) of the molding die (1), and the outer tube (3) and the core tube (12) are coaxially arranged with the outer die sleeve (1 a).

6. The forming device of the reinforced and toughened composite pipe according to claim 5, wherein the outer pipe bracket (2) further comprises a bracket body (22), a support plate (23) horizontally arranged is arranged at the bottom of the bracket body (22), a rubber pad (24) is paved between the support plate (23) and the bottom plate (21), a plurality of vertically arranged adjusting bolts (9) are arranged on the edge of the support plate (23) in a penetrating mode, a plurality of nuts (17) corresponding to the adjusting bolts (9) one by one are arranged on the bottom plate (21), the rod portion of each adjusting bolt (9) penetrates through the support plate (23) to be in threaded connection with the corresponding nuts (17), and the head portion of the adjusting bolt (9) abuts against the top surface of the support plate (23).

7. The molding equipment of the reinforced and toughened composite pipe according to claim 6, wherein the supporting plate (23) is rectangular, at least two sides parallel to each other are respectively provided with the adjusting bolts (9), the bottom surface of the bottom plate (21) is provided with a plurality of counter bores (212) corresponding to the nuts (17) one by one, the nuts (17) are arranged in the corresponding counter bores (212), and a gasket (10) is further arranged between the nuts (17) and the bottoms of the counter bores (212).

8. The molding equipment of the reinforced and toughened composite pipe according to claim 5, wherein the head end of the outer pipe (3) is provided with a first connecting flange (31), the end face of the first connecting flange (31) is abutted against the side face of the connecting plate (25), and a plurality of first bolts (11) which are in threaded connection with the connecting plate (25) are arranged on the first connecting flange (31) along the circumferential direction.

9. The molding equipment of the reinforced and toughened composite pipe as claimed in claim 8, wherein the head end of the core pipe (12) is inserted into the mounting hole (251) and the second connecting flange (121) is abutted against the side face of the connecting plate (25).