A bamboo winding composite pipe manufacturing equipment

Abstract

The present invention discloses a bamboo winding composite pipe manufacturing equipment, which belongs to the field of bamboo winding composite pipes, and includes a lining machine, a winding machine, a demoulding machine, a trimming machine and a feeding machine, wherein the lining machine is used to prepare the inner lining layer of the bamboo winding composite pipe on the pipe mold, the winding machine is used to wind the bamboo-based reinforcement layer on the inner lining layer, the trimming machine is used to trim the end of the bamboo winding composite pipe sprayed with an outer protective layer after curing to prepare a socket, the demoulding machine is used to separate the pipe mold from the bamboo winding composite pipe, and the feeding machine is used to provide bamboo powder supply. In the present invention, pouring is very flexible and controllable during the lining process, the winding station has a double workbench, the mold moving space is sufficient, the reflux system is omitted, the trimming station grinding shaft is sealed, and spraying can be performed after grinding, the clamping process of the demoulding process is more powerful and reasonable, the feeding machine structure is more streamlined, and the feeding is stable and reliable. The entire system structure of the equipment of the present invention is more reasonable, and the production is more efficient.

Description

Technical Field

[0001] The present invention belongs to the field of manufacturing bamboo-wound composite pipes, and more specifically, relates to a manufacturing device for bamboo-wound composite pipes. Background Art

[0002] Bamboo-wound composite pipes are a new type of bio-based pipe with bamboo as the matrix material, thermosetting resin as the adhesive, and processed by winding technology. They replace traditional pipes such as spiral welded pipes and prestressed concrete cylinder pipes, and can be widely used in agricultural water, petrochemical, urban construction, housing, storage and transportation and other fields. Bamboo-wound composite pipes have the advantages of renewable resources, light weight, energy saving and low carbon, fire and water resistance, strong earthquake and settlement resistance, good initial mechanical properties, high stability, good heat preservation performance, strong frost resistance, convenient construction and installation, and low comprehensive cost.

[0003] At present, the common processing technology of bamboo-wound composite pipes mainly includes several major links such as preparing the inner lining layer on the pipe mold, treating the bamboo, winding the bamboo on the inner lining layer to form the structural layer, curing, trimming, demolding, and making a protective coating on the pipe surface. Preparing the inner lining layer is the first key link in the processing of bamboo-wound composite pipes, and it is necessary to pour the adhesive on the surface of the pipe mold. The glue pouring grooves in the existing lining machines are all fixed and inclined downward at a certain angle to achieve the glue pouring action. However, this will cause the adhesive in the glue pouring groove to still drip after the glue pouring is completed, resulting in waste of the adhesive.

[0004] Winding the bamboo on the inner lining layer to form the structural layer is an essential link in the processing of bamboo-wound composite pipes. Chinese Patent CN105415698A discloses a forming machine for bamboo-wound tubular products, which winds bamboo strips on the inner lining layer on the surface of the mold through a bamboo strip feeding device to prepare the reinforcing layer. However, simply winding the bamboo strips often fails to meet the requirements of the strength and stiffness of the bamboo-wound composite pipe body. Therefore, an auxiliary reinforcing layer is usually added between the reinforcing layers. The auxiliary reinforcing layer is a clay layer composed of a mixture of resin and filler, and the filler is an inorganic filler or a natural plant filler. The existing bamboo strip winding equipment cannot simultaneously prepare the auxiliary reinforcing layer, so it is necessary to improve the existing reinforcing layer preparation device.

[0005] When the bamboo-wound composite pipe is used, generally, two sections of composite pipes are installed together by using a collar. For the convenience of assembly, it is necessary to use a trimming machine to process and trim the outer wall of the end of the bamboo-wound composite pipe to process the socket section to facilitate the smooth insertion of the pipe gallery. At the same time, after the bamboo-wound composite pipe winds the structural layer, it is also necessary to spray-process its surface, and usually, an additional spraying device needs to be specially set up. In this way, there are many processing devices, the operation is cumbersome, and because the bamboo-wound composite pipe is very large, it is very troublesome to transfer between different devices.

[0006] Demolding is an essential process in the processing of bamboo-wound composite pipes. Correspondingly, a demolding machine that can reliably and effectively remove the pipe mold is required. Bamboo-wound composite pipes are large-scale winding products, with lengths reaching dozens of meters and extremely large weights. Existing demolding equipment cannot effectively demold bamboo-wound composite pipes because it cannot fix the composite pipes well.

[0007] In addition, in the preparation process of some composite pipes, bamboo powder needs to be used. How to achieve smooth transportation of bamboo powder throughout the production process is one of the key issues that the bamboo powder feeding machine for bamboo-wound composite pipes needs to consider.

[0008] Therefore, it is necessary to develop a new type of manufacturing equipment for bamboo-wound composite pipes to overcome the above defects of existing manufacturing equipment for bamboo-wound composite pipes. Summary of the Invention

[0009] Aiming at the defects of the prior art, the purpose of the present invention is to provide a manufacturing equipment for bamboo-wound composite pipes. By improving each link of the lining machine, winding machine, demolding machine, finishing machine and feeding machine, the pouring during the lining process is very flexible and controllable, the winding station has a double workbench, the mold has sufficient moving space, the return system is omitted, the grinding shaft of the finishing station is sealed, and spraying can be carried out immediately after grinding. The clamping process during the demolding process is more powerful and reasonable, the structure of the feeding machine is more streamlined, and the material transportation is stable and reliable.

[0010] To achieve the above purpose, the present invention provides a manufacturing equipment for bamboo-wound composite pipes, which includes a lining machine, a winding machine, a demolding machine, a finishing machine and a feeding machine. Among them, the lining machine is used to prepare the inner lining layer of the bamboo-wound composite pipe on the pipe mold, the winding machine is used to wind the bamboo-based reinforcement layer on the inner lining layer, the finishing machine is used to trim the ends of the bamboo-wound composite pipes that have been cured and sprayed with an outer protective layer to prepare the socket, the demolding machine is used to separate the pipe mold from the bamboo-wound composite pipe, and the feeding machine is used to provide bamboo powder supply. Among them, the lining machine includes a pipe mold positioning mechanism, an inner lining layer fabric conveying and winding mechanism and a glue pouring mechanism. The pipe mold positioning mechanism is used to support and fix the pipe mold and drive it to rotate around the axis. The inner lining layer fabric conveying and winding mechanism and the glue pouring mechanism are both arranged beside the pipe mold positioning mechanism and can both generate relative displacement along the axial direction of the pipe mold with the pipe mold. The inner lining layer fabric conveying and winding mechanism is used to convey the inner lining layer fabric and wind it on the pipe mold. The glue pouring mechanism is used to pour the adhesive onto the winding inner lining layer fabric. The glue pouring mechanism includes a glue inlet pipe, a glue pouring tank and a cylinder. The glue inlet pipe is arranged above the pipe mold, the upper end of the glue inlet pipe is open, the lower end of the glue inlet pipe is communicated with the glue pouring tank, the cylinder is arranged beside the glue inlet pipe, the fixed end of the cylinder is fixedly connected with the glue inlet pipe, and the piston rod of the cylinder is rotatably connected with the glue pouring tank.

[0011] Further, the winding machine includes a winding machine pipe mold positioning mechanism and a feeding mechanism. The winding machine pipe mold positioning mechanism is used to support and fix the pipe mold wound with the inner liner layer and drive it to rotate around the axis. The feeding mechanism is arranged on one side of the winding machine pipe mold positioning mechanism. The feeding mechanism and the pipe mold can generate relative displacement along its axial direction. The feeding mechanism includes a base, a first slide rail and a second slide rail that are arranged side by side along the axial direction of the pipe mold on the base, and a bamboo strip conveying and winding system and a particle conveying and winding system that are respectively mounted on the first slide rail and the second slide rail. The bamboo strip conveying and winding system is slidably matched with the first slide rail. The bamboo strip conveying and winding system is used to convey the bamboo strip and wind it on the pipe mold to obtain a reinforcing layer. The particle conveying and winding system is slidably matched with the second slide rail. The particle conveying and winding system is used to convey the bio-based particles and wind them on the pipe mold to obtain an auxiliary reinforcing layer. The feeding mechanism further includes a first telescopic driving mechanism and a second telescopic driving mechanism. The first telescopic driving mechanism is used to drive the bamboo strip conveying and winding system to reciprocate along the radial direction of the pipe mold on the first slide rail. The second telescopic driving mechanism is used to drive the particle conveying and winding system to reciprocate along the radial direction of the pipe mold on the second slide rail.

[0012] Further, the finishing machine includes a finishing machine head seat, a finishing machine tail seat, a finishing moving track, a finishing mechanism and a spraying mechanism. The finishing machine head seat and the finishing machine tail seat are both arranged on the finishing moving track and are slidably matched with it. The finishing machine head seat and the finishing machine tail seat are used to support the bamboo-wound composite pipe and can drive the bamboo-wound composite pipe to rotate. The finishing mechanism is arranged between the finishing machine head seat and the finishing machine tail seat and on one side of the finishing moving track, and is used to finish the outer wall of the end of the bamboo-wound composite pipe when it rotates. The spraying mechanism is used to spray the outer wall of the bamboo-wound composite pipe when it rotates.

[0013] Further, the demolding machine includes a frame and a pipe supporting mechanism and a demolding mechanism that are respectively arranged on both sides of the frame. Among them, the pipe supporting mechanism is used to support the bamboo-wound composite pipe, and the demolding mechanism is used to pull the pipe mold to move along its axial direction to demold the pipe mold from the bamboo-wound composite pipe. A pipe clamping mechanism is arranged on the frame. The pipe clamping mechanism includes a plurality of telescopic clamping claws distributed circumferentially and arc-shaped clamping plates detachably arranged at the ends of each telescopic clamping claw. A travel switch is arranged on each telescopic clamping claw. The inner and outer diameters of the arc-shaped clamping plate are the same as the inner and outer diameters of the bamboo-wound composite pipe. The arc-shaped clamping plate is used to contact the end of the bamboo-wound composite pipe close to the frame during demolding, so as to clamp the bamboo-wound composite pipe. The pipe supporting mechanism includes a pipe supporting track and a pipe supporting vehicle slidably matched with the pipe supporting track. The pipe supporting vehicle can move along the pipe supporting track to adjust its position.

[0014] Furthermore, the feeding machine includes a powder feeding box, a powder feeding auger, a mixing pipe and a receiving hopper. Among them, the powder feeding auger is connected to the bottom of the powder feeding box. The powder feeding auger is in the shape of an inclined tube, with one end extending into the bottom of the powder feeding box and the other end suspended in the air upward. A spiral rotating shaft is arranged in the powder feeding auger. The end of the powder feeding auger suspended in the air is connected to the mixing pipe through a pipeline. A mixing rod is arranged in the mixing pipe. The resin binder and bamboo powder in the mixing pipe meet and are stirred and mixed. A receiving hopper is arranged below the outlet of the mixing pipe. The resin binder mixed with bamboo powder is conveyed to the required working station through the receiving hopper. A powder feeding box auger is arranged at the bottom of the powder feeding box. The bottom of the powder feeding box is funnel-shaped, and the powder feeding box auger is arranged at the funnel-shaped bottom of the powder feeding box.

[0015] Generally speaking, compared with the prior art by the above technical solutions conceived by the present invention, the following beneficial effects are achieved:

[0016] (1) In the lining machine of the present invention, by setting the cylinder piston rod to be rotatably connected to the glue pouring tank, the glue pouring tank can swing at a certain angle in the vertical direction. When the glue pouring operation is not carried out, the glue pouring tank can return to the horizontal position, avoiding the waste caused by the dripping of the remaining adhesive in the glue pouring tank. Through the design of the longitudinal telescopic rod and the transverse telescopic rod, it is adapted to the preparation of the inner lining layer on the surface of pipe molds with different diameters, and the position of the glue pouring tank is adjusted under different working conditions. By setting a pipe mold connector that can automatically align, the connector can be adjusted adaptively in the radial direction when the main axis of the pipe mold is eccentric. And by setting the second spring, the impact force on the connector during the docking of the pipe mold and the connector is reduced, ensuring the connection accuracy and reliability while extending the service life of the pipe mold connector.

[0017] (2) The winding machine of the present invention is a winding machine that simultaneously includes a bamboo strip conveying and winding system and a particle conveying and winding system. The two systems can move along the radial direction of the pipe mold. When one system is working, the other system moves to a position away from the pipe mold, effectively ensuring the processing reliability and accuracy and improving the production efficiency. The traditional glue pouring winding is replaced by dipping winding. The first dipping tank and the second dipping tank are set, so that the adhesive is attached to the bamboo strips and the mesh cloth in the form of dipping. Similarly, the adhesive and the bio-based particles are also attached to the sand pocket cloth in the form of dipping, which can ensure that the adhesive fully immerses the bamboo strips and the mesh cloth or the sand pocket cloth, achieving a sufficient glue content, and thus ensuring the quality of the finally produced bamboo-wound composite pipe.

[0018] (3) The finishing machine is equipped with a finishing mechanism and a spraying mechanism at the same time. On the one hand, it can achieve the rapid and accurate finishing of both ends of the bamboo-wound composite pipe. On the other hand, it can also carry out spraying processing on the outer wall of the composite pipe. This equipment has a simple structure and is easy to operate, improving the processing efficiency of the bamboo-wound composite pipe. The spraying mechanism is provided with a spraying hood, a blower and an air duct, which can collect the gas generated during the spraying operation and achieve good environmental protection effects. By setting a transparent cover, a blind cover and a lip seal in the grinding head assembly, it plays a good role in dust prevention, sealing and lubrication for the grinding head assembly, prolongs the service life of the grinding head assembly, and ensures its finishing quality.

[0019] (4) In the demolding machine, through the design of the pipe clamping mechanism, a travel switch is set on the telescopic claw. The curved surface of the arc-shaped clamping plate at the end of the telescopic claw is in full contact with the surface of the bamboo-wound composite pipe, which can ensure that the bamboo-wound composite pipe can be effectively limited during demolding, enabling the effective and reliable removal of the pipe mold. This demolding machine has the advantages of simple structure and easy operation. By setting up a pipe external transportation mechanism, the finished bamboo-wound composite pipe after demolding can be transported out of the factory along the track, with high automation and labor cost savings.

[0020] (5) A streamlined design is carried out in the structure. The powder feeding box is directly connected to the powder feeding auger. The bamboo powder of the powder feeding auger directly falls into the mixing pipe. The bamboo powder is evenly mixed with the resin binder in the mixing pipe and then transported to the trough through the hopper. During the whole process, there is no intermediate transfer and temporary storage process for the bamboo powder, which maximally prevents the bridging phenomenon when the bamboo powder aggregates. The powder feeding auger is arranged adjacent to the powder feeding auger at the bottom of the powder feeding box. With their combined action, during the continuous stirring and shaking process, the agglomeration and bridging of the bamboo powder are maximally prevented, and the continuous and stable transportation of the bamboo powder to the powder feeding auger can be achieved. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a bamboo-wound composite pipe lining machine provided by an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of the glue pouring mechanism provided by an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of the pipe mold connector provided by an embodiment of the present invention;

[0024] Figure 4 is a schematic structural diagram of a bamboo-wound composite pipe winding machine provided by an embodiment of the present invention;

[0025] Figure 5 is a three-dimensional structure diagram of the feeding mechanism provided by an embodiment of the present invention;

[0026] Figure 6 is a front view of the feeding mechanism provided by an embodiment of the present invention;

[0027] Figure 7 It is a top view of the feeding mechanism provided by the embodiment of the present invention;

[0028] Figure 8 It is a schematic structural diagram of a bamboo-wound composite pipe trimming machine provided by the embodiment of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the trimming mechanism provided by the embodiment of the present invention;

[0030] Figure 10 It is a schematic structural diagram of the grinding head assembly provided by the embodiment of the present invention;

[0031] Figure 11 It is a schematic structural diagram of the spraying mechanism provided by the embodiment of the present invention;

[0032] Figure 12 It is a schematic structural diagram of a bamboo-wound composite pipe demolding machine provided by the embodiment of the present invention;

[0033] Figure 13 It is a schematic structural diagram of the trusteeship mechanism provided by the embodiment of the present invention;

[0034] Figure 14 It is a schematic structural diagram of the pipe clamping mechanism provided by the embodiment of the present invention;

[0035] Figure 15 It is a schematic structural diagram of the demolding mechanism provided by the embodiment of the present invention;

[0036] Figure 16 It is a schematic structural diagram of the demolding cart provided by the embodiment of the present invention;

[0037] Figure 17 It is a schematic structural diagram of the pipeline external transportation mechanism provided by the embodiment of the present invention;

[0038] Figure 18 It is a front view of the simple type bamboo powder feeding machine for bamboo-wound composite pipes in the embodiment of the present invention;

[0039] Figure 19 It is a left view of the simple type bamboo powder feeding machine for bamboo-wound composite pipes in the embodiment of the present invention;

[0040] Figure 20 It is a three-dimensional view of the simple type bamboo powder feeding machine for bamboo-wound composite pipes in the embodiment of the present invention;

[0041] Figure 21 It is a top view of the simple type bamboo powder feeding machine for bamboo-wound composite pipes in the embodiment of the present invention. Detailed implementation manners

[0042] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] As Figure 1 shown, the present invention provides a bamboo-wound composite pipe liner machine, which includes a pipe mold positioning mechanism 1-1, an inner liner fabric conveying and winding mechanism 1-2 and a glue pouring mechanism 1-3. The pipe mold positioning mechanism 1-1 is used to support and fix the pipe mold and drive it to rotate around the axis. The inner liner fabric conveying and winding mechanism 1-2 and the glue pouring mechanism 1-3 are both arranged beside the pipe mold positioning mechanism 1-1 and can both generate relative displacement along the axial direction of the pipe mold with the pipe mold. The inner liner fabric conveying and winding mechanism 1-2 is used to convey the inner liner fabric and wind it on the pipe mold. The glue pouring mechanism 1-3 is used to pour adhesive onto the inner liner fabric during winding, so that the inner liner fabric is infiltrated with the adhesive to form an inner liner. In order to facilitate the synchronous winding of the inner liner fabric and the pouring of the adhesive, preferably, the inner liner fabric conveying and winding mechanism 1-2 and the glue pouring mechanism 1-3 are arranged on the same workbench, and the workbench is located on one side of the pipe mold positioning mechanism 1-1.

[0044] As Figure 2 shown, the glue pouring mechanism 1-3 includes a glue inlet pipe 1-31, a glue pouring tank 1-32, a cylinder 1-33, a longitudinal telescopic rod 1-34, a transverse telescopic rod 1-35, a glue spreading pipe 1-36 and a stirrer 1-37. Among them, the longitudinal telescopic rod 1-34 and the transverse telescopic rod 1-35 are electric telescopic mechanisms, such as electric push rods, linear motors, etc. The glue inlet pipe 1-31 is located above the pipe mold, and it is vertically connected and fixed to one end of the transverse telescopic rod 1-35. The longitudinal telescopic rod 1-34 is arranged on one side of the pipe mold and is fixedly connected to the end of the transverse telescopic rod 1-35 away from the glue inlet pipe 1-31. The upper end of the glue inlet pipe 1-31 is communicated with the stirrer 1-37. The stirrer 1-37 is provided with a glue inlet. The lower end of the glue inlet pipe 1-31 is vertically connected and communicated with the glue spreading pipe 1-36. A plurality of glue outlets are evenly arranged on the wall of the glue spreading pipe 1-36. The glue pouring tank 1-32 is connected to the wall of the glue spreading pipe 1-36 and is communicated with each other through the glue outlets. The stirrer 1-37 makes the adhesive raw material stirred more evenly, and the adhesive is evenly distributed into the glue pouring tank 1-32 through the plurality of glue outlets on the glue spreading pipe 1-36, and then the surface of the pipe mold is evenly poured with glue. The cylinder 1-33 is arranged beside the glue inlet pipe 1-31. The fixed end of the cylinder 1-33 is fixedly connected to the glue inlet pipe 1-31, and the piston rod of the cylinder 1-33 is rotatably connected to the glue pouring tank 1-32.

[0045] The longitudinal telescopic rod 1-34 can drive the glue pouring tank 1-32 to move up and down in the vertical direction to adapt to the glue pouring of bamboo-wound composite pipe molds with different diameters; the transverse telescopic rod 1-32 can drive the glue pouring tank 1-35 to move radially along the pipe mold, facilitating it to extend above the pipe mold during work and retract to the workbench when not working; the cylinder 1-36 can drive the glue pouring tank 1-35 to swing at a certain angle. When pouring glue, the glue pouring tank swings downward to facilitate pouring the adhesive onto the pipe mold. After the glue pouring is completed, the glue pouring tank rotates counterclockwise to the horizontal position to prevent the remaining adhesive in the glue pouring tank from dripping and causing waste.

[0046] Specifically, the inner liner fabric conveying and winding mechanism 1-2 includes a fabric roll support roller, a conveying roller, a tensioning roller, and a pressing roller. Among them, the raw material fabric roll is placed on the fabric roll support roller and can rotate around it. A plurality of conveying rollers are arranged along the fabric conveying direction, and each conveying roller is used to guide and output the fabric peeled from the fabric roll onto the pipe mold for winding. The tensioning roller is used to keep the conveyed fabric taut during the conveying process, and the pressing roller is located below the pipe mold to press the fabric being wound. Preferably, multiple groups of rotatable support rollers can be arranged circumferentially so that when different types of material rolls need to be wound, for example, when winding natural fiber fabric and mineral knitted felt respectively, the support roller sleeved with the material roll can be rotated to the side close to the pipe mold for conveying.

[0047] Continue to refer to Figure 1 , in order to realize the extension of the inner liner along the axis direction of the pipe mold, the liner making machine of the present invention further includes an axial movement driving mechanism 1-4. The axial movement driving mechanism 1-4 includes a moving track, an axial movement power output mechanism, a gear coaxially connected and rotatable synchronously with the axial movement power output mechanism, and a rack engaged with the gear. The rack is fixed on the moving track, the workbench is connected and fixed with the gear, and the gear is driven by the axial movement power output mechanism to rotate and engage with the rack on the moving track to move, so that the workbench can move linearly back and forth along the axial direction of the pipe mold on the moving track. Of course, it is also possible to make the pipe mold positioning mechanism 1-1 move axially while the inner liner fabric conveying and winding mechanism 1-2 and the glue pouring mechanism 1-3 are fixed.

[0048] In order to better complete the inner liner preparation operation and make the inner liner fabric wind more precisely on the pipe mold, the present invention optimizes the design of the pipe mold positioning mechanism 1-1. Specifically, the pipe mold positioning mechanism 1-1 includes a positioning headstock 1-11, a positioning tailstock 1-12, a pipe mold connector 1-13 and a rotation drive mechanism. The rotation drive mechanism is arranged on the positioning headstock 1-11. The pipe mold connector 1-13 can rotate under the driving force of the rotation drive mechanism. One end of the pipe mold is mounted on the positioning tailstock 1-12, and the other end of the pipe mold is fixedly connected to the pipe mold connector 1-13, so that the pipe mold can rotate synchronously with the rotation of the pipe mold connector 1-13.

[0049] In order to ensure the accuracy and precision of the connection between the pipe mold and the pipe mold connector 1-13, extend the service life of the pipe mold connector 1-13, and improve the accuracy of the liner making machine, the present invention designs the pipe mold connector 1-13 into an automatically aligning connector. Figure 3It is a schematic structural diagram of a pipe mold connector provided by an embodiment of the present invention, which includes a connector body 1-131 arranged at the end of a driving main shaft and used for connecting with the end of the pipe mold, at least two first spring assemblies arranged along the outer periphery of the connector body 1-131, a second spring 1-135 coaxially sleeved with the connector body 1-131, and a thrust assembly 1-132 capable of driving the driving main shaft to move axially. The first spring assembly includes a limit block 1-133 and a first spring 1-134. The limit block 1-133 is arranged along the axial direction of the driving main shaft, and its two ends are respectively a fixed end and a free end. The fixed end faces away from the end of the pipe mold and is fixedly connected to the outer periphery of the connector body 1-131. One side end face of the free end faces and does not abut against the outer peripheral wall surface of the connector body 1-131, and a groove with a certain depth is provided on this side end face. The first spring 1-134 is arranged between the free end and the connector body 1-131, and both ends of the first spring 1-134 are respectively fixed on the bottom surface of the groove and the outer peripheral wall surface of the connector body 1-131. By providing a first spring assembly composed of a limit block 1-133 and a first spring 1-134 on the outer periphery of the connector body 1-131 corresponding to the plug, the connector body 1-131 can make an adaptive offset in the radial direction when the main shaft of the pipe mold is eccentric, so as to prevent the damage of the pipe mold connector 1-13, and the pipe mold connector 1-13 can achieve automatic alignment under the action of the restoring force of the corresponding first spring 1-134. One end of the second spring 1-135 close to the connector body 1-131 is limited on the driving main shaft, and the other end thereof movably abuts against the thrust pulley in the thrust assembly 1-132. The second spring 1-135 can effectively buffer the impact force generated when the pipe mold connector 1-13 abuts against the main shaft of the pipe mold and when the plug is correspondingly inserted into the notch on the end face of the main shaft of the mold, thereby reducing the impact on the pipe mold connector 1-13 during the butt joint of the two main shafts, avoiding its damage, and prolonging the service life of the pipe mold connector 1-13.

[0050] Further preferably, the pipe mold positioning mechanism 1-1 further includes lifting units arranged at both ends of the pipe mold. The lifting units can drive the pipe mold to lift, so as to adjust the distance between the pipe mold and the inner lining fabric conveying and winding mechanism 1-2 after different diameter pipe molds are installed.

[0051] Continue to refer to Figure 1, the glue supply mechanism 1-7 is arranged beside the pipe mold positioning mechanism and is used to provide the adhesives required for the bamboo strip conveying and winding system and the particle conveying and winding system to prepare the reinforcing layer and the auxiliary reinforcing layer. The adhesives include resins, curing agents, etc. The glue supply mechanism 1-7 is a device commonly used in the fiber winding process in the prior art. For example, it specifically includes devices such as a stirring tank and a resin pump. The specific devices used are not further limited in the present invention and are all within the scope of protection. Preferably, the glue supply mechanism 1-7 includes a stirring tank, a filter, and a resin pump connected in sequence. The stirring tank is first connected to the filter, and the filter is then connected to the resin pump. In this way, when resins, curing agents, or other fillers are added to the stirring tank and stirred, if there are lumps or impurity particles, they can be filtered out by the filter and will not adhere to the conveying pipeline of the resin pump to cause blockage, affecting the service life and conveying efficiency of the resin pump conveying pipeline.

[0052] As Figure 4 shown, the present invention provides a winding machine for bamboo-wound composite pipes, which includes a pipe mold positioning mechanism, a feeding mechanism 2-1, a rear pressure roller mechanism 2-6, and a glue supply mechanism 2-7. The feeding mechanism 2-1 is arranged on one side of the pipe mold. The feeding mechanism 2-1 and the pipe mold can generate relative displacement along their axial directions. The feeding mechanism 2-1 includes a bamboo strip conveying and winding system and a particle conveying and winding system. The bamboo strip conveying and winding system is used to convey bamboo strips and wind them on the pipe mold to obtain a reinforcing layer. The particle conveying and winding system is used to convey bio-based particles and wind them on the pipe mold to obtain an auxiliary reinforcing layer. The bio-based particles are one or more of bamboo powder, wood powder, straw powder, and rattan powder. The auxiliary reinforcing layer can effectively utilize the debris (i.e., particulate matter) generated during the production and preparation of bamboo strips, wooden boards, rattan strips, straws, etc. However, this winding layer cannot replace the bamboo strip reinforcing layer and is only used to fill the gaps in the bamboo strip reinforcing layer. According to different process requirements, only the bamboo strip conveying and winding system can be selected during the processing of bamboo-wound composite pipes, or the bamboo strip conveying and winding system and the particle conveying and winding system can work alternately.

[0053] The positioning mechanism of the winding machine tube mold is used to support and fix the tube mold wound with the inner liner and drive it to rotate around the axis. Specifically, the positioning mechanism of the winding machine tube mold includes a winding machine headstock 2-2, a winding machine tailstock 2-3, a tube mold rotation driving mechanism 2-4, and a winding moving track 2-5. The tube mold rotation driving mechanism 2-4 is arranged on the winding machine headstock 2-2. One end of the tube mold is mounted on the winding machine tailstock 2-3, and the other end is connected to the tube mold rotation driving mechanism 2-4. The tube mold rotation driving mechanism 2-4 is used to drive the tube mold to rotate around the axis. Both the winding machine headstock 2-2 and the winding machine tailstock 2-3 are arranged on the winding moving track 2-5 and are slidably matched with it. The winding machine headstock 2-2 and the winding machine tailstock 2-3 can drive the tube mold to move along the winding moving track 2-5 to realize the adjustment of the axial position. The distance between the winding machine headstock 2-2 and the winding machine tailstock 2-3 is adjustable to adapt to tube molds of different lengths.

[0054] Preferably, the positioning mechanism of the winding machine tube mold further includes lifting units arranged at both ends of the tube mold. The lifting units can drive the tube mold to lift, so as to facilitate the adjustment of the distance between the tube mold of different diameters and the bamboo strip conveying and winding system and the particle conveying and winding system after installation. The rear pressing roller mechanism 2-6 is arranged on one side of the positioning mechanism of the winding machine tube mold. It includes a pressing roller, which is used to roll on the surface of the reinforcing layer during the winding process to expel air bubbles. The glue supply mechanism 2-7 is arranged beside the positioning mechanism of the winding machine tube mold and is used to provide the adhesives required for preparing the reinforcing layer and the auxiliary reinforcing layer for the bamboo strip conveying and winding system and the particle conveying and winding system. The adhesives include resin, curing agent, etc. The glue supply mechanism 2-7 is a device commonly used in the fiber winding process in the prior art. For example, it specifically includes a stirring tank, a resin pump and other devices. Specifically, which device is adopted is not further limited in the present invention and is within the protection scope. Preferably, the glue supply mechanism 2-7 includes a stirring tank, a filter and a resin pump connected in sequence. The stirring tank is first connected to the filter, and the filter is then connected to the resin pump. In this way, when resin, curing agent or other fillers are added to the stirring tank for stirring, if there are lumps or impurity particles, they can be filtered out by the filter and will not adhere to the conveying pipeline of the resin pump to cause blockage, affecting the service life and conveying efficiency of the resin pump conveying pipeline.

[0055] Specifically, the feeding mechanism 2-1 includes a base 2-101, a first slide rail and a second slide rail that are arranged side by side along the axial direction of the pipe mold on the base 2-101. The bamboo strip conveying and winding system and the particle conveying and winding system are respectively mounted on the first slide rail and the second slide rail. The bamboo strip conveying and winding system is slidably engaged with the first slide rail, and the particle conveying and winding system is slidably engaged with the second slide rail. The feeding mechanism 2-1 further includes a first telescopic driving mechanism and a second telescopic driving mechanism. The first telescopic driving mechanism is used to drive the bamboo strip conveying and winding system to reciprocate along the radial direction of the pipe mold on the first slide rail, and the second telescopic driving mechanism is used to drive the particle conveying and winding system to reciprocate along the radial direction of the pipe mold on the second slide rail.

[0056] Combined with Figure 5 、 Figure 6 and Figure 7As shown, the bamboo strip conveying and winding system includes a bamboo strip roll supporting roller 2-102, a mesh cloth roll supporting roller 2-103, a mesh cloth guiding roller 2-104, a first conveying roller 2-105, a first tension roller 2-106, a first pressing roller 2-107 and a first dipping tank 2-108. The bamboo strip roll is placed on the bamboo strip roll supporting roller 2-102 and can rotate around the bamboo strip roll supporting roller 2-102. The mesh cloth roll is placed on the mesh cloth roll supporting roller 2-103 and can rotate around the mesh cloth roll supporting roller 2-103. The bamboo strip peeled from the bamboo strip roll supporting roller 2-102 and the mesh cloth peeled from the mesh cloth roll supporting roller 2-103 are both positioned on the mesh cloth guiding roller 2-104. A plurality of first conveying rollers 2-105, a first dipping tank 2-108 and a first pressing roller 2-107 are arranged in sequence along the conveying direction of the bamboo strip and the mesh cloth. Each of the first conveying rollers 2-105 is used to guide and convey the bamboo strip and the mesh cloth into the first dipping tank 2-108. The first tension roller 2-106 is used to keep the conveyed bamboo strip and mesh cloth taut during the conveying process. The first pressing roller 2-107 is located below the pipe mold to press the bamboo strip and the mesh cloth after being infiltrated with the adhesive onto the pipe mold. The first telescopic driving mechanism includes a first telescopic arm 2-109 and a first hydraulic cylinder. The first hydraulic cylinder is fixedly arranged in the base 2-101. One end of the first telescopic arm 2-109 is fixedly connected to one end of the bamboo strip conveying and winding system close to the first pressing roller 2-107. The other end of the first telescopic arm 2-109 is hinged to the piston rod of the first hydraulic cylinder. The telescopic movement of the first telescopic arm 2-109 drives the bamboo strip conveying and winding system to make a reciprocating movement along the radial direction of the pipe mold on the first slide rail. One end of the bamboo strip conveying and winding system close to the first pressing roller 2-107 is also connected with a hydraulic cylinder, which is used to press the first pressing roller 2-107 against the surface reinforcement layer of the pipe mold, and at the same time, the pressure of the first pressing roller 2-107 is automatically controlled. Multiple groups of the first telescopic arm 2-109 and the first hydraulic cylinder can be arranged. In this embodiment, two groups are preferably arranged in parallel. When winding the reinforcement layer on the pipe mold, the bamboo strip conveying and winding system is driven to approach the pipe mold by the elongation of the first telescopic arm 2-109, and the first pressing roller 2-107 is located below the pipe mold to press the reinforcement layer.

[0057] Continue to refer to Figure 5 、 Figure 6 and Figure 7, the particle conveying and winding system includes a sand cloth guiding roller 2-111, a second conveying roller 2-112, a second tension roller 2-113, a second pressing roller 2-114 and a second dipping tank 2-115. The sand cloth is positioned on the sand cloth guiding roller 2-111. A plurality of second conveying rollers 2-112, a second dipping tank 2-115 and a second pressing roller 2-114 are arranged in sequence along the conveying direction of the sand cloth. Each of the second conveying rollers 2-112 is used to guide and convey the sand cloth into the second dipping tank 2-115. The second tension roller 2-113 is used to keep the conveyed sand cloth taut during the conveying process. The second pressing roller 2-114 is located below the pipe mold to press the sand cloth impregnated with the adhesive onto the pipe mold. A feeding hopper 2-116 is arranged above the second dipping tank 2-115, and the feeding hopper 2-116 is used to add bio-based particles into the second dipping tank 2-115. Preferably, a stirrer 2-118 is arranged in the second dipping tank 2-115 to stir the bio-based particles and the adhesive evenly to achieve uniform winding of the auxiliary reinforcing layer material. The second telescopic driving mechanism includes a second telescopic arm 2-117 and a second hydraulic cylinder. The second hydraulic cylinder is fixedly arranged in the base 2-101. One end of the second telescopic arm 2-117 is fixedly connected to one end of the particle conveying and winding system close to the second pressing roller 2-114. The other end of the second telescopic arm 2-117 is hinged to the piston rod of the second hydraulic cylinder. The telescopic movement of the second telescopic arm 2-117 drives the particle conveying and winding system to make a reciprocating movement along the radial direction of the pipe mold on the second slide rail. One end of the particle conveying and winding system close to the second pressing roller 2-114 is also connected with a hydraulic cylinder, which is used to press the auxiliary reinforcing layer on the surface of the pipe mold by the second pressing roller 2-114 and simultaneously realize automatic control of the pressure of the second pressing roller 2-114. Multiple groups of the second telescopic arm 2-117 and the second hydraulic cylinder can be arranged. In this embodiment, two groups are preferably arranged in parallel. When winding the auxiliary reinforcing layer on the pipe mold, the particle conveying and winding system is driven to approach the pipe mold by the elongation of the second telescopic arm 2-117, and the second pressing roller 2-114 is located below the pipe mold to press the auxiliary reinforcing layer.

[0058] Further preferably, when winding the reinforcing layer, the bamboo strip conveying and winding system approaches the pipe mold (the first telescopic arm 2-109 elongates), and the first pressing roller 2-107 is located below the pipe mold. At this time, the particle conveying and winding system is far away from the pipe mold (the second telescopic arm 2-117 contracts); when winding the auxiliary reinforcing layer, the particle conveying and winding system approaches the pipe mold (the second telescopic arm 2-117 elongates), and the second pressing roller 2-114 is located below the pipe mold. At this time, the bamboo strip conveying and winding system is far away from the pipe mold (the first telescopic arm 2-109 contracts). This leaves space for the movement of the pipe mold. Otherwise, it will cause the two ends of the pipe mold to be blocked and unable to wind the reinforcing layer or the auxiliary reinforcing layer.

[0059] Further preferably, a first reflux baffle 2-110 is provided on the side of the first pressing roller 2-107 away from the first dipping tank 2-108, and a second reflux baffle 2-119 is provided on the side of the second pressing roller 2-114 away from the second dipping tank 2-115. In this way, the excess adhesive extruded by the pressing action of the pressing roller can flow back to the dipping tank through the reflux baffle for reuse, avoiding the waste caused by the excess adhesive dripping on the ground. At the same time, in this way, there is no need to specially provide a material receiving tank under the pipe mold, which also saves the equipment cost.

[0060] As Figure 8 shown, an embodiment of the present invention provides a bamboo-wound composite pipe finishing machine, which is used to process and finish the outer walls of both ends of an un-demolded bamboo-wound composite pipe. The finishing machine includes a finishing machine head seat 3-1, a finishing machine tail seat 3-2, a finishing moving track 3-3, a finishing mechanism 3-4, and a spraying mechanism 3-5. The finishing machine head seat 3-1 and the finishing machine tail seat 3-2 are used to support the bamboo-wound composite pipe and can drive the bamboo-wound composite pipe to rotate. Specifically, the tail of the un-demolded bamboo-wound composite pipe is erected on the finishing machine tail seat 3-2, and the head is connected to the finishing machine head seat 3-1 through a pipe mold head. Both the finishing machine head seat 3-1 and the finishing machine tail seat 3-2 are arranged on the finishing moving track 3-3 and are slidably matched with it, so that the distance between the finishing machine head seat 3-1 and the finishing machine tail seat 3-2 can be adjusted to adapt to bamboo-wound composite pipes of different lengths. The finishing machine head seat 3-1 and the finishing machine tail seat 3-2 can drive the bamboo-wound composite pipe to make a reciprocating motion on the finishing moving track 3-3. The finishing mechanism 3-4 is arranged between the finishing machine head seat 3-1 and the finishing machine tail seat 3-2 and is located on one side of the finishing moving track 3-3, and is used to finish the outer wall of the end of the bamboo-wound composite pipe when it rotates. Through the axial movement and rotation around the axis of the bamboo-wound composite pipe, the outer walls of its two ends are finished, and the finishing mechanism 3-4 is fixed, which is convenient for cleaning the waste materials cut and dropped during the finishing process. The spraying mechanism 3-5 is used to spray the outer wall of the bamboo-wound composite pipe when it rotates, and different coatings are sprayed according to the processing technology requirements of the bamboo-wound composite pipe.

[0061] Continue to refer to Figure 8 , specifically, a groove is provided at the top of the finishing machine tail seat 3-2, and two rollers are symmetrically arranged in the groove. The tail of the un-demolded bamboo-wound composite pipe is erected between the two rollers and can rotate around its central axis. A rotation driving device is arranged on the finishing machine head seat 3-1, and this rotation driving device is connected to the pipe mold head in the bamboo-wound composite pipe and can drive the pipe mold head to rotate around its central axis, thereby driving the entire un-demolded bamboo-wound composite pipe to rotate.

[0062] As Figure 9As shown in the figure, the trimming mechanism 3-4 includes a trimming platform 3-41, a pipe head trimming unit and a pipe tail trimming unit that are arranged side by side along the axial direction of the bamboo-wound composite pipe on the trimming platform 3-41. Since the structures at both ends of the finished bamboo-wound composite pipe are different, in order to facilitate processing, two trimming units are provided. The pipe head trimming unit is used to trim the outer wall of the pipe head of the non-demolded bamboo-wound composite pipe to form a socket end; the pipe tail trimming unit is used to trim the outer wall of the pipe tail of the non-demolded bamboo-wound composite pipe to form a spigot end. A material receiving groove can be arranged below the pipe head trimming unit and the pipe tail trimming unit so that the waste generated by trimming and cutting falls into the material receiving groove. Specifically, the pipe head trimming unit includes a saw blade 3-44 and a second driving motor 3-45. The second driving motor 3-45 drives the saw blade 3-44 to rotate through the output shaft, and then trims the pipe head of the bamboo-wound composite pipe to form a socket end. The pipe tail trimming unit includes a grinding head assembly 3-42 and a first driving motor 3-43. The grinding head assembly 3-42 is drivingly connected to the first driving motor 3-43. The first driving motor 3-43 is used to drive the grinding head assembly 3-42 to rotate, and then trims the pipe tail of the bamboo-wound composite pipe to form a spigot end.

[0063] Further, referring to Figure 10, the grinding head assembly 3-42 includes a combined tool 3-421, a grinding head shaft 3-422, a pair of first rolling bearings 3-423, a bearing positioning sleeve 3-424, a first through cover 3-425, a second rolling bearing 3-426, a second through cover 3-427, a blind cover 3-428 and a lip seal 3-429. One end of the grinding head shaft 3-422 is sleeved with the combined tool 3-421, and the other end is drivingly connected to the first drive motor 3-43. The combined tool 3-421 is composed of a plurality of cutter discs with different diameters and arranged coaxially, and blades are installed on the circumferences of the cutter discs. A pair of first rolling bearings 3-423 and a second rolling bearing 3-426 are respectively sleeved on the grinding head shaft 3-422 and located at both ends of the combined tool 3-421. First through covers 3-425 are arranged at both ends of the pair of first rolling bearings 3-423, and a bearing positioning sleeve 3-424 is arranged between the pair of first rolling bearings 3-423 on the grinding head shaft 3-422. A second through cover 3-427 and a blind cover 3-428 are respectively arranged on both sides of the second rolling bearing 3-426, and the blind cover 3-428 completely closes one end of the grinding head shaft 3-422 close to the combined tool 3-421. Both the first rolling bearing 3-423 and the second rolling bearing 3-426 can be deep groove ball bearings. The bearing positioning sleeve 3-424 and the first through cover 3-425 can axially position the inner and outer rings of the first rolling bearing 3-423, and the second through cover 3-427 and the blind cover 3-428 can axially position the outer ring of the second rolling bearing 3-426. Lip seals 3-429 are provided between the first through cover 3-425 and the grinding head shaft 3-422, and between the second through cover 3-427 and the grinding head shaft 3-422. The first through cover 3-425, the second through cover 3-427, the blind cover 3-428 and the lip seal 3-429 cooperate to achieve the functions of dust prevention, sealing and lubrication maintenance inside the grinding head assembly 3-42. Continue to refer to Figure 10 , preferably, the first drive motor 3-43 drives the grinding head assembly 3-42 to rotate through a pulley. Specifically, a grinding head pulley is installed at one end of the grinding head shaft 3-422 away from the combined tool 3-421, a drive pulley is installed on the output shaft of the first drive motor 3-43, and the grinding head pulley is connected to the drive pulley through a belt.

[0064] As Figure 11As shown, the spraying mechanism 3-5 includes a spray gun 3-51, a spray frame 3-52, a spray hood 3-53, a fan 3-54 and an air duct 3-55. The spray hood 3-53 is arranged above the bamboo-wrapped composite pipe, and the bottom of the spray hood 3-53 is welded to the outer side of the main beam of the trimming movable track 3-3. The spray frame 3-52 is fixed on the spray hood 3-53, and the spray gun 3-51 is arranged on the spray frame 3-52 and is located inside the spray hood 3-53, and is used for spraying the outer wall of the bamboo-wrapped composite pipe. The fan 3-54 is arranged on the top of the spray hood 3-53, and the air inlet of the fan 3-54 is connected to the top of the spray hood 3-53, and the air outlet of the fan 3-54 is connected to the air duct 3-55, and the end of the air duct 3-55 away from the fan 3-54 leads to an external gas collection device. Specifically, the fan 3-54 is a centrifugal exhaust fan, and the gas generated by the spray gun spraying paint is extracted through the fan 3-54 and discharged outside the factory along the duct 3-55. Preferably, the spray hood 3-53 is arched, so as to effectively cover the bamboo-wrapped composite pipe and suck the atomized gas in the hood during spraying; the spray hood 3-53 is preferably made of transparent material, so that the staff can clearly observe the spraying and exhaust conditions in the hood during spraying.

[0065] If Figure 12 As shown, an embodiment of the present invention provides a bamboo winding composite pipe demoulding machine, which includes a frame 4-1 and a trustee mechanism 4-2 and a demoulding mechanism 4-3 respectively arranged on both sides of the frame 4-1, wherein the frame 4-1 can be a gantry frame, on which a pipe clamping mechanism 4-4 is arranged, and the pipe clamping mechanism 4-4 is used to clamp the end of the bamboo winding composite pipe close to the frame 4-1 when the bamboo winding composite pipe is demoulded, the trustee mechanism 4-2 is used to support the bamboo winding composite pipe to be demoulded and the finished bamboo winding composite pipe after demoulding, and the demoulding mechanism 4-3 is used to pull the pipe mold to move along its axial direction to remove the pipe mold from the bamboo winding composite pipe. A pipe transport mechanism 4-5 is also arranged on one side of the trustee mechanism 4-2, and the pipe transport mechanism 4-5 is used to transport the bamboo winding composite pipe after demoulding out of the demoulding plant.

[0066] If Figure 13 As shown, the trusteeship mechanism 4-2 includes a trusteeship track 4-21 and a trusteeship vehicle 4-22 that slides with the trusteeship track 4-21. The trusteeship vehicle 4-22 is used to support the bamboo-wrapped composite pipe. The trusteeship vehicle 4-22 can move along the trusteeship track 4-21 (to Figure 1For example, it can move left and right along the hosting track 4-21) to adjust the position, and then realize the adjustment of the support position of the bamboo-wound composite pipe. At the same time, it can also adjust the position of the bamboo-wound composite pipe on the hosting track 4-21. Specifically, the hosting vehicle 4-22 can be driven by an external power source (such as a motor) to move along the hosting track 4-21. The external power source can be drivingly connected to the hosting vehicle 4-22 through gears and chains, or rollers can be installed on the hosting vehicle 4-22, and the external power source drives the rollers to move to realize the movement of the hosting vehicle 4-22. The specific driving method is not elaborated here. To ensure the reliability of the support, multiple hosting vehicles 4-22 can be provided, preferably two. To adapt to the support of bamboo-wound composite pipes of various diameters, the support surface at the top of the hosting vehicle 4-22 is designed as a V shape.

[0067] Combined with Figure 12 and Figure 14 As shown, the pipe clamping mechanism 4-4 includes a plurality of telescopic claws 4-41 evenly distributed circumferentially on the frame 4-1 and arc-shaped clamping plates 4-42 detachably arranged at the ends of each telescopic claw 4-41. Preferably, four telescopic claws 4-41 are provided. By adjusting the telescopic movement of the telescopic claws 4-41, the position of the arc-shaped clamping plate 4-42 is adjusted. During demolding, the arc-shaped clamping plate 4-42 contacts the end of the bamboo-wound composite pipe near one end of the frame 4-1, and then clamps the bamboo-wound composite pipe so that it will not move as the demolding mechanism 4-3 pulls the pipe mold to move. To ensure that the bamboo-wound composite pipe can be completely clamped and not move, the inner and outer diameters of the arc-shaped clamping plate 4-42 are the same as those of the bamboo-wound composite pipe. In this way, the contact area between the arc-shaped clamping plate 4-42 and the end of the bamboo-wound composite pipe is increased, thereby enhancing the fixing effect of the bamboo-wound composite pipe during demolding. By the detachable setting of the arc-shaped clamping plate 4-42, arc-shaped clamping plates of different sizes can be replaced to adapt to bamboo-wound composite pipes of different diameters. Preferably, a travel switch is provided on each telescopic claw 4-41 to control the telescopic stroke of the telescopic claw 4-41 and perform limit protection on it.

[0068] As Figure 15 shown, the demolding mechanism 4-3 includes a combined bed 4-31 and a demolding vehicle 4-32 arranged on the combined bed 4-31. The demolding vehicle 4-32 can move along the combined bed 4-31 to pull the pipe mold to move. Specifically, the demolding vehicle 4-32 can be driven by an external power source (such as a motor) to move along the combined bed 4-31. The external power source can be drivingly connected to the demolding vehicle 4-32 through gears and chains, or rollers can be installed on the demolding vehicle 4-32, and the external power source drives the rollers to move to realize the movement of the demolding vehicle 4-32. The specific driving method is not elaborated here. Any method that can drive the demolding vehicle 4-32 to move along the combined bed 4-31 is applicable to the present invention. Combined with Figure 16, a clamping groove 4-33 is provided at the top of the demolding cart 4-32, and a U-shaped baffle 4-34 is provided on one side of the clamping groove 4-33. The U-shaped baffle 4-34 is used to fix the pipe mold head inside the clamping groove 4-33, so as to realize that the demolding cart 4-32 moves the whole pipe mold out of the bamboo-wound composite pipe by dragging the pipe mold head.

[0069] Specifically, the combined bed body 4-31 is assembled by multiple bed bodies with the same structure. The reason for such design is that the bamboo-wound composite pipe is a large-scale winding product with a length of more than ten meters or even dozens of meters. Therefore, the required length of the pipe mold is also relatively long. To ensure the smooth demolding of the pipe mold, the length of the bed body needs to be at least greater than the length of the pipe mold. If the bed body is an integral structure, it will greatly increase the engineering difficulty and have high requirements for the operating space. Therefore, the present invention proposes a combined bed body structure. By dividing it into multiple bed body units, each unit is independently processed, and then the units are assembled to obtain the whole bed body. In this way, the engineering difficulty can be greatly reduced, and it is also convenient for operation and processing. As Figure 15 shown, the combined bed body 4-41 is composed of three bed body units, namely the first bed body unit, the second bed body unit, and the third bed body unit. Of course, in actual operation, the number of bed body units can be determined according to actual needs. Preferably, stroke switches are provided at both ends of the combined bed body 4-31 to control the stroke position of the demolding cart 4-32 and perform left and right limit protection on the demolding cart 4-32.

[0070] Further preferably, the demolding mechanism 4-3 further includes a pipe mold support mechanism 4-35 provided on the combined bed body 4-31. The pipe mold support mechanism 4-35 is located between the frame 4-1 and the demolding cart 4-32. The pipe mold head is stuck in the clamping groove 4-33 on the demolding cart 4-32, and the tail of the pipe mold is supported by the pipe mold support mechanism 4-35 after demolding. Preferably, rollers are provided on the upper surface (i.e., the support surface) of the pipe mold support mechanism 4-35 to facilitate the transmission and transportation of the pipe mold on the pipe mold support mechanism 4-35.

[0071] Usually, a truck is used to transport the finished bamboo-wound composite pipe out of the demolding workshop. However, the turning radius of a large truck is extremely large, which invisibly increases the floor area of the workshop and also raises the labor cost. In order to reduce the processing cost of the bamboo-wound composite pipe, the present invention designs a pipeline external transportation mechanism 4-5, as Figure 17As shown in the figure, the pipe external transportation mechanism 4-5 includes two conveying tracks 4-51 vertically arranged with respect to the hosting track 4-21 and an external transportation track 4-52 arranged parallel to the hosting track 4-21. One end of each conveying track 4-51 is close to the hosting track 4-21, and the other end is close to the external transportation track 4-52. A conveying trolley 4-53 that is slidably engaged therewith is arranged on each conveying track 4-51, and an external transportation trolley 4-54 that is slidably engaged therewith is arranged on the external transportation track 4-52. The conveying trolley 4-53 is used to transport the bamboo-wound composite pipe between the hosting track 4-21 and the external transportation track 4-52, and the external transportation trolley 4-54 is used to transport the bamboo-wound composite pipe out of the factory building. Preferably, the conveying trolley 4-53 includes a pallet 4-531 and a liftable bracket 4-532. The pallet 4-531 is installed on the liftable bracket 4-532, and the liftable bracket 4-532 is arranged such that the height of the pallet 4-531 is adjustable. To ensure the reliability of the support, multiple external transportation trolleys 4-54 can be arranged, preferably two. To adapt to the support of bamboo-wound composite pipes with various diameters, the support surface at the top of the external transportation trolley 4-54 is designed as a V shape.

[0072] Further preferably, the pipe external transportation mechanism 4-5 further includes a support platform 4-55 located between the two conveying tracks 4-51, and one end of the support platform 4-55 is close to the hosting track 4-21, and the other end is close to the external transportation track 4-52. Before the demolding process, it is necessary to trim the end of the bamboo-wound composite pipe. However, since the pipe mold is still embedded in the bamboo-wound composite pipe during the trimming process, in order to avoid the grinding tool damaging the surface of the pipe mold, the end of the bamboo-wound composite pipe usually trimmed by the trimming machine is not completely trimmed. By arranging the support platform 4-55, the bamboo-wound composite pipe can roll on the support platform 4-55 while performing the remaining trimming operations on both ends of the bamboo-wound composite pipe.

[0073] Figure 18 is the front view of the simple-type bamboo-wound composite pipe bamboo powder feeding machine in the embodiment of the present invention, Figure 19 is the left view of the simple-type bamboo-wound composite pipe bamboo powder feeding machine in the embodiment of the present invention, Figure 20 is the three-dimensional view of the simple-type bamboo-wound composite pipe bamboo powder feeding machine in the embodiment of the present invention, Figure 21 is the top view of the simple-type bamboo-wound composite pipe bamboo powder feeding machine in the embodiment of the present invention. The above four figures show the structure of the bamboo-wound composite pipe bamboo powder feeding machine from different angles. The following further elaborates in detail in combination with the above four figures:

[0074] The simple bamboo powder feeding machine for the bamboo-wound composite pipe of the present invention includes a powder feeding box 5-1, a powder feeding auger 5-2, a mixing pipe 5-6, and a receiving hopper 5-7. Among them, the powder feeding auger 5-2 communicates with the bottom of the powder feeding box 5-1. A powder feeding box auger 5-10 is arranged at the bottom of the powder feeding box. The bottom of the powder feeding box is funnel-shaped, and the powder feeding box auger 5-10 is arranged at the funnel-shaped bottom of the powder feeding box. The powder feeding auger 5-2 is in the shape of an inclined tube. One end extends into the bottom of the powder feeding box, and the other end is suspended in the air upward. A motor is arranged at the end of the powder feeding auger 5-2 suspended in the air. The motor is connected to the spiral rotating shaft in the powder feeding auger to drive the rotating shaft to rotate, thereby driving the bamboo powder to be transported upward from the bottom of the powder feeding box. The end of the powder feeding auger 5-2 suspended in the air is communicated with the mixing pipe 5-6 through a pipeline. Specifically, a guiding pipe 5-3 communicating with the pipe wall of the powder feeding auger 5-2 is arranged at the end of the powder feeding auger 5-2 suspended in the air. The guiding pipe 5-3 communicates with a feeding pipe 5-4. The guiding pipe 5-3 is inclined downward, and the feeding pipe 5-4 is vertically downward and communicates with the mixing pipe 5-6. Stirring rods 5-9 are arranged in the mixing pipe 5-6. The stirring rods 5-9 are provided with a plurality of mutually intersecting stirring rods along the axial direction of the mixing pipe 5-6, which are used for stirring the bamboo powder and the resin binder in the mixing pipe 5-6 to achieve uniform mixing of the bamboo powder and the resin binder. A receiving hopper 5-7 is arranged below the outlet of the mixing pipe 5-6. The resin binder mixed with bamboo powder is transported to the required working station through the receiving hopper 5-7. A resin inlet is arranged on the outer wall of the mixing pipe 5-6 near the feeding pipe 5-4. A material trough 5-12 is arranged below the receiving hopper 5-7. Stirring rods 5-11 are arranged in the material trough 5-12. The stirring rods 5-11 are connected to an external power mechanism so as to be driven to rotate, thereby leveling the resin binder mixed with bamboo powder. A plurality of mutually intersecting stirring rods are arranged on the stirring rods 5-11, which are used for stirring and leveling the resin binder mixed with bamboo powder to achieve continuous and stable supply of materials.

[0075] In an embodiment of the present invention, a stepped working station footrest 5-8 is arranged at the bottom of the material trough 5-12 for the staff to stand on to monitor the material situation in the material trough. The working station footrest 5-8 is made of steel or plastic materials, and it can also be used as a support body to support the motor or other components arranged nearby. In an embodiment of the present invention, an electronic scale is arranged at the bottom of the feeding box for monitoring the quality of the bamboo powder used. In fact, without setting an electronic scale, only by combining the capacity of the pitch in the powder feeding auger and the rotation speed of the powder feeding auger, the quality of the bamboo powder used can also be calculated. Further combined with the electronic scale arranged at the bottom of the powder feeding box, the quality of the bamboo powder used can be more accurately known. In the present invention, the powder feeding box auger 5-10, the stirring rods 5-9 arranged in the mixing pipe 5-6, and the stirring rods 5-11 are all connected to their respective corresponding motors, and the corresponding auger or stirring rod is driven by the motor to rotate, thereby driving or pushing the materials.

[0076] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bamboo winding composite pipe manufacturing equipment, characterized in that: It includes a lining machine, a winding machine, a demoulding machine, a trimming machine and a feeding machine, wherein the lining machine is used to prepare an inner lining layer of a bamboo-wound composite pipe on a pipe mold, the winding machine is used to wind a bamboo-based reinforcement layer on the inner lining layer, the trimming machine is used to trim the end of the bamboo-wound composite pipe sprayed with an outer protective layer after curing to prepare a socket, the demoulding machine is used to separate the pipe mold from the bamboo-wound composite pipe, and the feeding machine is used to provide bamboo powder supply, wherein, The lining making machine comprises a tube mold positioning mechanism (1-1), an inner lining fabric conveying and winding mechanism (1-2) and a glue pouring mechanism (1-3), wherein the tube mold positioning mechanism (1-1) is used to support and fix the tube mold and drive it to rotate around an axis, the inner lining fabric conveying and winding mechanism (1-2) and the glue pouring mechanism (1-3) are both arranged beside the tube mold positioning mechanism (1-1) and can generate relative displacement with the tube mold along the axial direction of the tube mold, the inner lining fabric conveying and winding mechanism (1-2) is used to convey the inner lining fabric and wind it on the tube mold, and the glue pouring mechanism (1-3) is used to pour adhesive onto the inner lining fabric being wound. The glue spraying mechanism (1-3) comprises a glue feeding pipe (1-31), a glue spraying tank (1-32) and a cylinder (1-33); the glue feeding pipe (1-31) is arranged above the tube mold; the upper end of the glue feeding pipe (1-31) is open; the lower end of the glue feeding pipe (1-31) is connected to the glue spraying tank (1-32); the cylinder (1-33) is arranged beside the glue feeding pipe (1-31); the fixed end of the cylinder (1-33) is fixedly connected to the glue feeding pipe (1-31); the piston rod of the cylinder (1-33) is rotatably connected to the glue spraying tank (1-32); specifically, The glue spraying mechanism (1-3) further comprises a longitudinal telescopic rod (1-34) and a transverse telescopic rod (1-35); the glue inlet pipe (1-31) is vertically connected and fixed to one end of the transverse telescopic rod (1-35); the longitudinal telescopic rod (1-34) is arranged on one side of the tube mold and is fixedly connected to one end of the transverse telescopic rod (1-35) away from the glue inlet pipe (1-31); The glue spraying mechanism (1-3) further comprises a glue dispensing tube (1-36) and a stirrer (1-37), wherein the glue dispensing tube (1-36) is vertically connected to the lower end of the glue inlet tube (1-31) and communicates with each other, a plurality of glue outlets are evenly arranged on the tube wall of the glue dispensing tube (1-36), the glue spraying tank (1-32) is connected to the tube wall of the glue dispensing tube (1-36) and communicates with each other through the glue outlets, the stirrer (1-37) is arranged at the upper end of the glue inlet tube (1-31) and communicates with the glue inlet tube (1-31), and a glue inlet is arranged on the stirrer (1-37). The tube mold positioning mechanism (1-1) comprises a positioning machine head seat (1-11), a positioning machine tail seat (1-12), a tube mold connector (1-13) and a rotary drive mechanism. The rotary drive mechanism is arranged on the positioning machine head seat (1-11). The tube mold connector (1-13) can rotate under the driving force of the rotary drive mechanism. One end of the tube mold is mounted on the machine tail seat (1-12), and the other end is connected and fixed to the tube mold connector (1-13), so that the tube mold can rotate synchronously with the rotation of the tube mold connector (1-13). The tube mold connector (1-13) is an automatically aligned connector, comprising a connector body (1-131) arranged at the end of the driving spindle and used to connect to the end of the tube mold, at least two first spring components arranged along the outer periphery of the connector body (1-131), and a thrust component (1-132) capable of driving the driving spindle to move axially, wherein the first spring component comprises a limit block (1-133) and a first spring (1-134), wherein the limit block (1-133) is arranged along the axial direction of the driving spindle, and its two ends are respectively a fixed end and a free end, wherein the fixed end is away from the end of the tube mold and is fixedly connected to the outer periphery of the connector body (1-131), and one end face of the free end is directly opposite to and does not abut against the tube mold end. The outer peripheral wall surface of the connector body (1-131) is provided with a groove of a certain depth on the side end surface, the first spring (1-134) is arranged between the free end and the connector body (1-131), and the two ends of the first spring (1-134) are respectively fixed on the bottom surface of the groove and the outer peripheral wall surface of the connector body (1-131), and the tube mold connector (1-13) also includes a second spring (1-135) coaxially sleeved with the connector body (1-131), one end of the second spring (1-135) close to the connector body (1-131) is limited on the driving main shaft, and the other end thereof is movably abutted against the thrust pulley in the thrust assembly (1-132).

2. The bamboo winding composite pipe manufacturing equipment according to claim 1, characterized in that: The winding machine comprises a winding machine tube mold positioning mechanism and a feeding mechanism (2-1), wherein the winding machine tube mold positioning mechanism is used to support and fix a tube mold wound with an inner lining layer and drive it to rotate around an axis, and the feeding mechanism (2-1) is arranged on one side of the winding machine tube mold positioning mechanism, and the feeding mechanism (2-1) and the tube mold can generate relative displacement along their axial direction. The feeding mechanism (2-1) comprises a base (2-101), a first slide rail and a second slide rail which are arranged in parallel on the base (2-101) along the axial direction of the tube mold, and a bamboo strip conveying and winding system and a particle conveying and winding system which are respectively mounted on the first slide rail and the second slide rail, the bamboo strip conveying and winding system being in sliding cooperation with the first slide rail, the bamboo strip conveying and winding system being used to convey bamboo strips and wind them around the tube mold to obtain a reinforcement layer, the particle conveying and winding system being in sliding cooperation with the second slide rail, the particle conveying and winding system being used to convey bio-based particles and wind them around the tube mold to obtain an auxiliary reinforcement layer; the feeding mechanism (2-1) also comprises a first telescopic driving mechanism and a second telescopic driving mechanism, the first telescopic driving mechanism being used to drive the bamboo strip conveying and winding system to make a reciprocating motion along the radial direction of the tube mold on the first slide rail, and the second telescopic driving mechanism being used to drive the particle conveying and winding system to make a reciprocating motion along the radial direction of the tube mold on the second slide rail.

3. The bamboo winding composite pipe manufacturing equipment according to claim 2, characterized in that: The trimming machine comprises a trimming machine headstock (3-1), a trimming machine tailstock (3-2), a trimming movable track (3-3), a trimming mechanism (3-4) and a spraying mechanism (3-5); the trimming machine headstock (3-1) and the trimming machine tailstock (3-2) are both arranged on the trimming movable track (3-3) and slidably cooperate with the trimming movable track (3-3); the trimming machine headstock (3-1) and the trimming machine tailstock (3-2) are used to support the bamboo-wound composite pipe and drive the bamboo-wound composite pipe to rotate; the trimming mechanism (3-4) is arranged between the trimming machine headstock (3-1) and the trimming machine tailstock (3-2) and is located on one side of the trimming movable track (3-3), and is used to trim the outer wall of the end of the bamboo-wound composite pipe when the bamboo-wound composite pipe rotates; the spraying mechanism (3-5) is used to spray the outer wall of the bamboo-wound composite pipe when the bamboo-wound composite pipe rotates.

4. The bamboo winding composite pipe manufacturing equipment according to claim 3, characterized in that: The demoulding machine comprises a frame (4-1) and a supporting mechanism (4-2) and a demoulding mechanism (4-3) respectively arranged on both sides of the frame (4-1), wherein the supporting mechanism (4-2) is used to support the bamboo-wound composite pipe, and the demoulding mechanism (4-3) is used to pull the pipe mould to move along its axial direction so as to remove the pipe mould from the bamboo-wound composite pipe; The frame (4-1) is provided with a pipe clamping mechanism (4-4), the pipe clamping mechanism (4-4) comprising a plurality of telescopic clamping claws (4-41) distributed along the circumferential direction and an arc-shaped clamping plate (4-42) detachably arranged at the end of each telescopic clamping claw (4-41), each telescopic clamping claw (4-41) being provided with a travel switch, the inner and outer diameters of the arc-shaped clamping plate (4-42) being the same as the inner and outer diameters of the bamboo-wound composite pipe, the arc-shaped clamping plate (4-42) being used to contact the end of the bamboo-wound composite pipe close to one end of the frame (4-1) during demoulding, thereby clamping the bamboo-wound composite pipe, The trusteeship mechanism (4-2) comprises a trusteeship track (4-21) and a trusteeship vehicle (4-22) that is slidably matched with the trusteeship track (4-21); the trusteeship vehicle (4-22) can move along the trusteeship track (4-21) to adjust its position.

5. The bamboo winding composite pipe manufacturing equipment according to claim 4, characterized in that: The material feeding machine comprises a powder feeding box (5-1), a powder feeding auger (5-2), a stirring tube (5-6) and a receiving hopper (5-7), wherein the powder feeding auger (5-2) is connected to the bottom of the powder feeding box (5-1), the powder feeding auger (5-2) is in an inclined tubular shape, one end of which extends into the bottom of the powder feeding box and the other end is suspended upward in the air, a spiral rotating shaft is arranged in the powder feeding auger, and the end of the powder feeding auger (5-2) suspended in the air is connected to the stirring tube (5-6) through a pipeline, and the stirring tube (5-6) is connected to the stirring tube (5-6) through a pipeline. A stirring rod (5-9) is arranged in the stirring tube (5-6), the resin binder and bamboo powder in the stirring tube (5-6) meet and are stirred and mixed, a receiving hopper (5-7) is arranged below the outlet of the stirring tube (5-6), the resin binder mixed with bamboo powder is transported to a required work station through the receiving hopper (5-7), and a powder box stirring dragon (5-10) is arranged at the bottom of the powder box, the bottom of the powder box is funnel-shaped, and the powder box stirring dragon (5-10) is arranged at the bottom of the powder box in the shape of a funnel.

6. The bamboo winding composite pipe manufacturing equipment according to claim 5, characterized in that: The bamboo strip conveying and winding system comprises a bamboo strip winding roller (2-102), a mesh cloth winding roller (2-103), a mesh cloth guide roller (2-104), a first conveying roller (2-105), a first tension roller (2-106), a first pressing roller (2-107) and a first glue dipping tank (2-108); the bamboo strip roll is placed on the bamboo strip winding roller (2-102) and can rotate around the bamboo strip winding roller (2-102); the mesh cloth roll is placed on the mesh cloth winding roller (2-103) and can rotate around the mesh cloth winding roller (2-103); the bamboo strip strip peeled off from the bamboo strip winding roller (2-102) and the mesh cloth winding roller (2-103) are rolled onto the bamboo strip conveying and winding system; -103) are all positioned on the mesh cloth guide roller (2-104), and a plurality of first conveying rollers (2-105), first glue dipping tanks (2-108) and first pressing rollers (2-107) are sequentially arranged along the conveying direction of the bamboo strips and the mesh cloth, each of the first conveying rollers (2-105) is used to guide the conveyed bamboo strips and the mesh cloth to the first glue dipping tank (2-108), the first tension roller (2-106) is used to keep the conveyed bamboo strips and the mesh cloth tensioned during the conveying process, and the first pressing roller (2-107) is located below the tube mold to press the bamboo strips and the mesh cloth impregnated with adhesive onto the tube mold.

7. The bamboo winding composite pipe manufacturing equipment according to claim 6, characterized in that: The first telescopic drive mechanism comprises a first telescopic arm (2-109) and a first hydraulic cylinder, wherein the first hydraulic cylinder is fixedly arranged in the base (2-101), one end of the first telescopic arm (2-109) is fixedly connected to one end of the bamboo strip conveying and winding system close to the first pressing roller (2-107), and the other end of the first telescopic arm (2-109) is hinged to the piston rod of the first hydraulic cylinder, and the first telescopic arm (2-109) is telescopically driven to drive the bamboo strip conveying and winding system to reciprocate along the radial direction of the tube mold on the first slide rail, and a first reflux baffle (2-110) is arranged on a side of the first pressing roller (2-107) away from the first dipping tank (2-108).

8. The bamboo winding composite pipe manufacturing equipment according to claim 7, characterized in that: The particle conveying and winding system comprises an abrasive cloth guide roller (2-111), a second conveying roller (2-112), a second tension roller (2-113), a second pressing roller (2-114) and a second glue dipping tank (2-115); the abrasive cloth is arranged on the abrasive cloth guide roller (2-111) and positioned; a plurality of second conveying rollers (2-112), second glue dipping tanks (2-115) and second pressing rollers (2-114) are sequentially arranged along the conveying direction of the abrasive cloth; each of the second conveying rollers (2-11 2) is used to guide the conveyed emery cloth to the second glue dipping tank (2-115), the second tension roller (2-113) is used to keep the conveyed emery cloth tensioned during the conveying process, the second pressing roller (2-114) is located below the tube mold to press the emery cloth soaked in adhesive onto the tube mold, and a feeding hopper (2-116) is provided above the second glue dipping tank (2-115), and the feeding hopper (2-116) is used to add bio-based particles to the second glue dipping tank (2-115).

9. The bamboo winding composite pipe manufacturing equipment according to claim 8, characterized in that: The second telescopic drive mechanism comprises a second telescopic arm (2-117) and a second hydraulic cylinder, wherein the second hydraulic cylinder is fixedly arranged in the base (2-101), one end of the second telescopic arm (2-117) is fixedly connected to one end of the particle conveying and winding system close to the second clamping roller (2-114), and the other end of the second telescopic arm (2-117) is hinged to the piston rod of the second hydraulic cylinder, and the second telescopic arm (2-117) is telescopically driven to drive the particle conveying and winding system to reciprocate on the second slide rail along the radial direction of the tube mold.

10. The bamboo winding composite pipe manufacturing equipment according to claim 9, characterized in that: The spraying mechanism (3-5) comprises a spray gun (3-51) and a spraying frame (3-52); the spraying frame (3-52) is arranged on one side of the trimming moving track (3-3); the spray gun (3-51) is mounted on the spraying frame (3-52) and is used for spraying the outer wall of the bamboo-wound composite pipe; the spraying mechanism (3-5) further comprises a spraying hood (3-53), a fan (3-54) and an air duct (3-55); the spraying hood (3-53) is arranged above the bamboo-wound composite pipe, The spray rack (3-52) is fixedly mounted on the spray hood (3-53), the spray gun (3-51) is located inside the spray hood (3-53), the fan (3-54) is arranged on the top of the spray hood (3-53), the air inlet of the fan (3-54) is connected to the top of the spray hood (3-53), the air outlet of the fan (3-54) is connected to the air duct (3-55), and the end of the air duct (3-55) away from the fan (3-54) is connected to a gas collection device.

11. The bamboo winding composite pipe manufacturing equipment according to claim 10, characterized in that: The trimming mechanism (3-4) comprises a trimming platform (3-41) and a pipe head trimming unit and a pipe tail trimming unit arranged in parallel on the trimming platform (3-41) along the axial direction of the bamboo-wound composite pipe. The pipe head trimming unit is used to trim the outer wall of the pipe head of the bamboo-wound composite pipe that has not been demoulded. The pipe tail trimming unit is used to trim the outer wall of the pipe tail of the bamboo-wound composite pipe that has not been demoulded. The pipe tail trimming unit comprises a grinding head assembly (3-42) and a first driving motor (3-43). The grinding head assembly (3-42) comprises a combined tool (3-421) and a grinding head shaft (3-422). One end of the grinding head shaft (3-422) is sleeved with the combined tool (3-421), and the other end is drivingly connected to the first driving motor (3-43). The first driving motor (3-43) is used to drive the grinding head assembly (3-42) to rotate, thereby trimming the pipe tail of the bamboo-wound composite pipe to form a socket end. The grinding head assembly (3-42) comprises a pair of first rolling bearings (3-423), a bearing positioning sleeve (3-424), a first transparent cover (3-425), a second rolling bearing (3-426), a second transparent cover (3-427), a cover (3-428) and a lip seal ring (3-429); the pair of first rolling bearings (3-423) and the second rolling bearing (3-426) are respectively sleeved on the grinding head shaft (3-422) and located at two ends of the combined tool (3-421); the first transparent cover (3-425) is provided at both ends of the pair of first rolling bearings (3-423); the first transparent cover (3-425) and the first transparent cover (3-429) are connected to each other. The outer ring of the rolling bearing (3-423) is positioned, a bearing positioning sleeve (3-424) is arranged between a pair of first rolling bearings (3-423) on the grinding head shaft (3-422), a second transparent cover (3-427) and a blind cover (3-428) are respectively arranged on both sides of the second rolling bearing (3-426), the second transparent cover (3-427), the blind cover (3-428) and the outer ring of the second rolling bearing (3-426) are positioned, and a lip seal ring (3-429) is arranged between the first transparent cover (3-425) and the grinding head shaft (3-422), and between the second transparent cover (3-427) and the grinding head shaft (3-422).

12. The bamboo winding composite pipe manufacturing equipment according to claim 11, characterized in that: The device also comprises a pipeline external transport mechanism (4-5), wherein the pipeline external transport mechanism (4-5) comprises two conveying rails (4-51) arranged perpendicularly to the entrusted rail (4-21) and an external transport rail (4-52) arranged parallel to the entrusted rail (4-21), one end of the conveying rail (4-51) is close to the entrusted rail (4-21), and the other end is close to the external transport rail (4-52), each conveying rail (4-51) is provided with a conveying trolley (4-53) slidably matched therewith, and the external transport rail (4-52) is provided with an external transport trolley (4-54) slidably matched therewith, and the conveying trolley (4-53) is used to transport the bamboo-wrapped composite pipe between the entrusted rail (4-21) and the external transport rail (4-52), The pipeline transport mechanism (4-5) further comprises a support platform (4-55) located between the two conveying tracks (4-51), wherein one end of the support platform (4-55) is close to the trustee track (4-21), and the other end is close to the transport track (4-52). The transport trolley (4-53) comprises a support plate (4-531) and a liftable support (4-532), wherein the support plate (4-531) is mounted on the liftable support (4-532).

13. The bamboo winding composite pipe manufacturing equipment according to claim 12, characterized in that: The demoulding mechanism (4-3) comprises a combined bed (4-31) and a demoulding vehicle (4-32) arranged on the combined bed (4-31); the demoulding vehicle (4-32) can move along the combined bed (4-31) to pull the tube mold to move; a slot (4-33) is arranged on the top of the demoulding vehicle (4-32); a U-shaped baffle (4-34) is arranged on a side of the slot (4-33) close to the frame (4-1); the U-shaped baffle (4-34) is used to fix the tube mold head inside the slot (4-33); and travel switches are arranged at both ends of the combined bed (4-31). The demoulding mechanism (4-3) further comprises a tube mold support mechanism (4-35) arranged on the combined bed (4-31); the tube mold support mechanism (4-35) is located between the frame (4-1) and the demoulding vehicle (4-32); and a roller (4-36) is arranged on the supporting surface of the tube mold support mechanism (4-35).

14. The bamboo winding composite pipe manufacturing equipment according to claim 13, characterized in that: A motor is provided at the end of the powder-loading agitator (5-2) suspended in the air, and the motor is connected to a spiral rotating shaft in the powder-loading agitator to drive the rotating shaft to rotate, thereby driving the bamboo powder to be transported upward from the bottom of the powder-loading box. At the same time, a guide pipe (5-3) connected to the pipe wall of the powder-loading agitator (5-2) is also provided at the end of the powder-loading agitator (5-2) suspended in the air, and the guide pipe (5-3) is connected to the discharge pipe (5-4). The guide pipe (5-3) is inclined downward, and the discharge pipe (5-4) is vertically downward and connected to the stirring pipe (5-6). The stirring pipe (5-6) is provided with a resin inlet at the outer wall close to the discharge pipe (5-4).

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