Plastic composite pipe sealing and feeding integrated machine

Abstract

The application discloses a plastic composite pipe sealing and feeding integrated machine, which comprises a feeding frame, a pipe supporting seat and an electric heating box arranged along the same axial direction. The feeding frame comprises a supporting frame, a positioning guide group and feeding wheel sets. The supporting frame is provided with a driving motor and a sliding guide ring. The surface of the sliding guide ring is provided with an arc sliding groove. The positioning guide group is matched with the arc sliding groove and the sliding groove through sliding rods and guide pins, so that the sliding guide ring can drive the multiple feeding wheel sets to synchronously perform radial adjustment when the sliding guide ring rotates. The feeding wheel set comprises a mandrel, a hub sleeve and multiple wheel sets. The hub sleeve rotates under the driving of a hub motor, so that the wheel sets axially transport the plastic composite pipe and drive the plastic composite pipe to rotate in a state of abutting against the outer surface of the plastic composite pipe. Through the above structure, the plastic composite pipe can be stably transported and continuously rotated in the clamped state, and the ports can be uniformly heated in the process of approaching the electric heating box, so that the sealing quality and the operation stability are improved.

Description

Technical Field

[0001] This invention relates to the field of plastic composite pipe processing technology, specifically to a plastic composite pipe sealing and feeding integrated machine. Background Technology

[0002] Plastic composite pipes are widely used in fluid transportation and related industrial fields due to their advantages such as corrosion resistance, light weight, and ease of molding. During the production process of plastic composite pipes, the pipe ends typically require heating and softening, followed by heat fusion sealing with caps to ensure the pipe's sealing performance and reliability. Therefore, the sealing process places high demands on the clamping stability, conveying accuracy, and uniform heating of the pipe ends.

[0003] In existing plastic composite pipe sealing equipment, the common structural form often adopts a separate arrangement of independent clamping and conveying mechanisms. For example, the pipe is clamped by grippers, pressure rollers, or fixed sleeves, and then the axial movement of the pipe is achieved by conveying rollers or a pushing mechanism. In actual use, this type of structure often requires multiple clamping or transfer of the pipe between different workstations. It is prone to axial misalignment due to repeated positioning, affecting sealing accuracy. In addition, the overall structure is complex and the continuity of operation is poor.

[0004] In terms of radial clamping of pipes, existing technologies generally use single-point or a few pressure rollers to clamp the pipes, while some equipment applies clamping force through springs or cylinders. This clamping method makes it difficult to ensure uniform force in all directions when the pipe diameter changes or the pipe has slight ellipticity, which can easily lead to local compression or insufficient clamping. This may cause damage to the pipe surface and slippage during transportation or heating, affecting processing stability.

[0005] In addition, during the sealing heating process, some existing equipment only axially transports the plastic composite pipe without applying continuous and stable rotational motion to the pipe, or passively drives the pipe to rotate only through external friction. This results in uneven heating of the pipe ends during the heating process, which can easily lead to local overheating or insufficient softening, thus affecting the quality of the heat-melt sealing and the consistency of the finished product.

[0006] Meanwhile, for equipment employing multiple sets of pressure rollers or multi-station conveying structures, the common driving methods in existing technologies often involve independently setting each drive unit, lacking an effective linkage mechanism. When the equipment needs to adjust the position of the pressure rollers according to changes in pipe diameter, not only is the adjustment process cumbersome, but the synchronization of rotation between multiple sets of pressure rollers is also difficult to guarantee, further increasing the difficulty of equipment debugging and operational instability.

[0007] In summary, existing plastic composite pipe sealing equipment still has shortcomings in terms of the integration of clamping and conveying, the uniformity of radial clamping, the synchronization of multiple conveying components, and the uniformity of heating during the sealing process. It is difficult to simultaneously meet the comprehensive requirements of structural simplification, stable operation, and sealing quality control. Therefore, it is necessary to provide a compact, integrated clamping and conveying plastic composite pipe sealing and conveying machine that can achieve multi-pipe delivery component linkage and ensure uniform heating of the pipe ends, in order to overcome the aforementioned technical deficiencies. Summary of the Invention

[0008] The present invention aims to solve the problems commonly found in existing plastic composite pipe sealing equipment, such as the independent clamping, conveying and heating processes, the large number of clamping operations, poor positioning consistency, uneven heating of the pipe ends during the heating process, and insufficient sealing quality stability. The present invention provides a plastic composite pipe sealing and feeding integrated machine.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] This invention provides a plastic composite pipe sealing and feeding integrated machine, comprising a feeding frame, a support bracket, and an electric heating box arranged along the same axial direction. The feeding frame is used for radial clamping, axial conveying, and rotational driving of the plastic composite pipe; the support bracket is used for supporting the plastic composite pipe during conveying; and the electric heating box is used for heating and softening the ends of the plastic composite pipe and completing the sealing process.

[0011] The pipe feeding rack includes a support frame, a positioning guide group, and a pipe feeding abutment wheel. Through the cooperation of the drive motor, sliding guide ring, arc sliding groove, and the sliding groove, the radial synchronous adjustment of the pipe feeding abutment wheel relative to the plastic composite pipe is realized. Through the cooperation of the hub motor and worm gear drive, the axial conveying and self-rotation drive of the plastic composite pipe in the clamped state is realized, thereby meeting the requirements of stable conveying and uniform heating in the sealing process.

[0012] The pipe feeding rack includes a support frame, a positioning guide assembly, and pipe feeding abutments. The pipe feeding abutments consist of multiple abutments arranged circumferentially to radially clamp the outer surface of the plastic composite pipe. In the clamped state, the pipe feeding abutments, driven by a drive, propel the plastic composite pipe axially while maintaining its rotation. By integrating clamping, axial conveying, and rotational drive into the same pipe feeding rack structure, multi-station switching and repeated clamping are avoided, ensuring consistent positioning of the plastic composite pipe during the sealing process and improving operational continuity and stability.

[0013] In a preferred embodiment, a sliding guide ring is rotatably mounted on the support frame. An arc-shaped groove is formed on the surface of the sliding guide ring. The bearing seats in the positioning guide assembly cooperate with the arc-shaped groove and the groove via sliding rods and guide pins. This allows the sliding guide ring to drive multiple bearing seats to move synchronously in the radial direction when rotating, thereby adjusting the radial position of the pipe-feeding rollers relative to the plastic composite pipe. This centralized drive method enables synchronous radial adjustment of multiple sets of pipe-feeding rollers, ensuring uniform and reliable clamping of the plastic composite pipe under different pipe diameter conditions. This avoids localized compression or insufficient clamping, improving the versatility and clamping stability of the equipment.

[0014] In a preferred embodiment, each feed roller is further configured with a hub motor to drive the hub sleeve to rotate. This allows the roller to apply a tangential driving force to the plastic composite pipe while it is in contact with the outer surface of the pipe, thereby achieving axial conveying and rotation of the plastic composite pipe while maintaining its clamping state. The continuous contact of multiple rollers during conveying ensures a smooth and reliable process, and keeps the plastic composite pipe rotating throughout the sealing process, promoting uniform heating at the ends.

[0015] The mandrel in the pipe feeding roller is driven by a worm gear drive and is connected to the mandrels of adjacent pipe feeding rollers through a transmission shaft. This allows multiple pipe feeding rollers to rotate synchronously when the worm gear drive drives a single mandrel to rotate.

[0016] By using a linkage structure between the worm gear drive and the transmission shaft, the number of drive sources is simplified while ensuring the synchronization of multiple sets of pipe feeding rollers during rotation, thereby improving the coordination and stability of the plastic composite pipe conveying and rotation process.

[0017] In a preferred embodiment, the pipe feeder is further configured such that, during the axial conveying and rotational driving of the plastic composite pipe, the end of the plastic composite pipe gradually approaches and faces the heating surface of the electric heating box, while maintaining the rotation of the plastic composite pipe throughout the heating process. This continuous rotation of the plastic composite pipe during heating ensures that each part of the port is heated sequentially, preventing localized overheating or underheating, improving the consistency of the port's molten state, and thus enhancing sealing quality and product yield.

[0018] The beneficial effects achieved by this invention are as follows:

[0019] 1. In this invention, by setting multiple pipe feeding rollers in the pipe feeding rack and cooperating with radially adjustable positioning guides, an integrated structural design for radial clamping, axial conveying and self-rotation driving of plastic composite pipes is realized. This ensures that the plastic composite pipes are always in a stable and controlled state during conveying, positioning and sealing processes, avoiding positioning errors caused by multiple station switching or multiple clamping in existing equipment, and improving the continuity and stability of the overall operation.

[0020] 2. In this invention, the synchronous radial guidance of the bearing seat by the sliding guide ring and the arc sliding groove enables the centralized adjustment of multiple sets of pipe feeding rollers, so that the pipe feeding rollers can automatically form a uniform clamp according to the change of the outer diameter of the plastic composite pipe. This ensures reliable clamping of the pipe and avoids damage to the pipe surface caused by excessive local compression, thereby improving the equipment's adaptability to plastic composite pipes of different specifications.

[0021] 3. In this invention, the hub motor drives the pipe feeding rollers to rotate as a whole, and the worm gear drive and transmission shaft work together to achieve the linkage of multiple sets of pipe feeding rollers. This allows the plastic composite pipe to obtain stable axial conveying and continuous rotation while being clamped. During the end heating process, it can achieve uniform heating, effectively improve the consistency of the melting state of the plastic composite pipe end, thereby improving the sealing quality and the finished product qualification rate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the surface structure of a pipe feeder according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of a support frame and its surface structure according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the positioning guide assembly and the pipe delivery wheel structure according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the bearing housing and transmission shaft structure according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the pipe feeding roller structure according to an embodiment of the present invention;

[0028] Figure 7 This is an exploded view of the pipe feed roller according to an embodiment of the present invention;

[0029] Figure label:

[0030] 1. Pipe feeder; 2. Pipe support holder; 3. Electric heating box;

[0031] 100. Support frame; 110. Drive motor; 120. Sliding guide ring; 130. Sliding groove; 111. Gear disc; 121. Arc sliding groove;

[0032] 200. Positioning guide assembly; 210. Bearing housing; 220. Drive shaft; 230. Worm gear drive component; 211. Slide rod; 212. Guide pin; 213. Hub motor; 221. Telescopic rod; 222. Transmission joint ball;

[0033] 300. Pipe feed roller; 310. Mandrel; 320. Hub sleeve; 330. Roller; 311. Ball groove; 312. Worm gear ridge; 313. Joint groove; 321. Shaft pin seat; 331. Worm gear groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0035] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0036] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a plastic composite pipe sealing and feeding integrated machine.

[0037] Combination Figures 1-7 As shown, the present invention provides a plastic composite pipe sealing and feeding integrated machine, which includes a pipe feeding frame 1, a pipe support seat 2 and an electric heating box 3 arranged sequentially along the same axis.

[0038] The pipe feeder 1 is used to clamp, axially transport, and rotate the plastic composite pipe; the support base 2 is used to support the plastic composite pipe in the middle during the pipe feeding process, and its top surface is equipped with multiple balls to reduce the frictional resistance during the axial movement of the plastic composite pipe; the electric heating box 3 is used to heat and soften the ends of the plastic composite pipe to complete the subsequent sealing operation.

[0039] Combination Figure 3 As shown, the pipe delivery rack 1 includes a support frame 100, a positioning guide group 200, and a pipe delivery stop wheel 300.

[0040] The support frame 100 serves as the overall mounting base, with a drive motor 110 fixedly mounted on its surface and a sliding guide ring 120 rotatably mounted thereon. The output end of the drive motor 110 is provided with a gear 111, which meshes with the outer peripheral surface of the sliding guide ring 120 to drive the drive motor 110 to rotate the sliding guide ring 120 around its axis.

[0041] The surface of the support frame 100 is provided with a plurality of grooves 130 in the radial direction. Each groove 130 is used to guide and limit the radial displacement of the positioning guide group 200.

[0042] Combination Figure 3 and Figure 4 As shown, the positioning guide assembly 200 includes several bearing seats 210, a transmission shaft 220, and a worm gear drive 230 fixed to the surface of one of the bearing seats 210.

[0043] Each bearing housing 210 has a slide rod 211 fixedly connected to its surface. The slide rod 211 is slidably sleeved on the inner side of the corresponding slide groove 130, allowing the bearing housing 210 to move radially along the support frame 100. A guide pin 212 is fixedly installed on the surface of the slide rod 211.

[0044] The surface of the sliding guide ring 120 is provided with arc-shaped grooves 121, which are arranged in an arc shape and their number corresponds one-to-one with each sliding rod 211. The guide pin 212 is slidably sleeved on the inner side of the arc-shaped groove 121. When the drive motor 110 drives the sliding guide ring 120 to rotate, the guide pin 212 is guided by the arc-shaped groove 121, so that each bearing seat 210 produces synchronous radial sliding on the support frame 100.

[0045] Specifically, the sliding guide ring 120 rotates around the equipment axis under the drive of the drive motor 110. Since the surface of the sliding guide ring 120 has arc-shaped grooves 121, and each arc-shaped groove 121 slides in engagement with the guide pin 212 on the corresponding bearing seat 210, when the sliding guide ring 120 rotates, the arc-shaped grooves 121 generate relative displacement with respect to the guide pins 212. Because the arc-shaped grooves 121 are arranged in an arc shape, their groove shape extends circumferentially along the sliding guide ring 120, and the two ends of the arc-shaped grooves 121 are close to the axial center and outer periphery of the sliding guide ring 120, respectively, during the rotation of the sliding guide ring 120, the guide pins 212 generate a radial displacement component under the guidance of the arc-shaped grooves 121. The guide pin 212 is fixedly installed on the surface of the slide rod 211, while the slide rod 211 is slidably sleeved in the groove 130 on the surface of the support frame 100, so that the slide rod 211 and its connected bearing seat 210 can only move in the radial direction of the support frame 100, thereby converting the rotational motion of the guide ring 120 into the radial sliding motion of the bearing seat 210. By controlling the rotation direction and rotation angle of the drive motor 110, the guide ring 120 can be made to rotate in the forward or reverse direction, thereby driving multiple bearing seats 210 to move synchronously closer to the axis of the support frame 100 or further away from the outer periphery, realizing the radial clamping or radial release adjustment of the pipe feeding roller 300 relative to the plastic composite pipe.

[0046] In this embodiment, the sliding guide ring 120 and the drive motor 110 are arranged coaxially, and both are annular structures, so that the plastic composite pipe can pass through along the axial direction of the equipment.

[0047] Combination Figure 6 and Figure 7 As shown, the pipe feed roller 300 is rotatably mounted on the surface of the bearing housing 210. The pipe feed roller 300 includes a spindle 310, a hub sleeve 320, and several rollers 330.

[0048] The hub sleeve 320 is rotatably sleeved on the outside of the spindle 310. Each bearing seat 210 is provided with a hub motor 213 on its surface. The hub motor 213 is used to drive the corresponding hub sleeve 320 to rotate independently around the spindle 310.

[0049] Several axle pin seats 321 are fixedly installed on the outer circumferential surface of the hub sleeve 320, and multiple abutment rollers 330 are rotatably installed on the surface of the axle pin seats 321 and are evenly distributed in a circumferential direction along the outer circumference of the hub sleeve 320. The axle pin seats 321 and abutment rollers 330 are divided into two groups, and the two groups are staggered, so that at least one abutment roller 330 is always in contact with the outer surface of the plastic composite pipe during the rotation of the hub sleeve 320.

[0050] In this embodiment, the abutment wheel 330 has a spindle-shaped structure and a worm gear groove 331 is provided on its surface; the outer periphery of the spindle 310 is provided with a worm gear spiral ridge 312 arranged in a spiral shape. The abutment wheel 330 is driven by meshing with the worm gear spiral ridge 312 through the through hole provided on the surface of the hub sleeve 320, thereby driving the abutment wheel 330 to rotate synchronously during the rotation of the hub sleeve 320.

[0051] In this embodiment, each bearing housing 210 surface is provided with a hub motor 213, and the output end of the hub motor 213 is driven to be connected to the hub sleeve 320 in the corresponding pipe feeding wheel 300, so as to drive the pipe feeding wheel 300 to rotate as a whole around the axis of the plastic composite pipe.

[0052] When the hub motor 213 starts, the hub sleeve 320 rotates around the spindle 310 under its driving action. Multiple abutment rollers 330, evenly distributed around the outer circumference of the hub sleeve 320, move synchronously around the axis of the plastic composite tube. Since the abutment rollers 330 maintain contact with the outer surface of the plastic composite tube after radial adjustment, they apply tangential friction to the outer surface of the plastic composite tube during the rotation of the hub sleeve 320.

[0053] The aforementioned tangential frictional force forms a component force in the axial direction of the plastic composite pipe, enabling the plastic composite pipe to maintain its clamped and rotating state while generating a stable axial conveying displacement along the equipment axis. By adjusting the speed and direction of rotation of the hub motor 213, the conveying speed and direction of the plastic composite pipe can be controlled, thereby achieving forward conveying of the plastic composite pipe towards the electric heating box 3 or reverse conveying away from the electric heating box 3.

[0054] Meanwhile, since the pipe feeding roller 300 is composed of multiple rollers 330 distributed along the circumference, and the rollers 330 contact the outer surface of the plastic composite pipe in sequence during the rotation of the hub sleeve 320, the plastic composite pipe always maintains a continuous, self-rotating force state during the conveying process, avoiding slippage or unstable conveying caused by single-point drive.

[0055] Through the above structure and working process, the hub motor 213 not only drives the overall rotation of the pipe feeding wheel 300, but also forms a stable and continuous friction transmission relationship between the pipe feeding wheel 300 and the plastic composite pipe, so that the plastic composite pipe can be axially transported while being clamped and rotating, providing a reliable motion basis for the subsequent port heating and sealing processes.

[0056] Combination Figure 5 As shown, the mandrel 310 has ball-and-socket grooves 311 at both ends for engaging with the drive shaft 220. The drive shaft 220 includes a telescopic rod 221 and drive joint balls 222 arranged at both ends of the telescopic rod 221, with the drive joint balls 222 sleeved in the ball-and-socket grooves 311.

[0057] The inner side of the ball groove 311 is provided with several circumferentially distributed arc-shaped sliding teeth, and the surface of the transmission joint ball 222 is provided with tooth grooves that are adapted to the arc-shaped sliding teeth, so that the adjacent feeding pipe abutment wheel 300 can be connected and rotated synchronously through the transmission shaft 220.

[0058] The surface of the spindle 310 is also provided with a engagement groove 313. The output end of the worm drive 230 engages with the engagement groove 313 for transmission, so that the worm drive 230 can drive the spindle 310 to rotate.

[0059] In this embodiment, the worm gear drive 230 is fixedly mounted on the surface of one of the bearing seats 210, and its output end engages with the engagement groove 313 opened on the surface of the spindle 310 in the corresponding feed tube abutment 300 to drive the spindle 310 to rotate around its own axis.

[0060] When the worm drive 230 is activated, its output rotational power is directly transmitted to the corresponding spindle 310 through the engagement groove 313, causing the spindle 310 to generate stable rotational motion. Since the worm drive 230 adopts a worm-worm gear transmission structure, it has a large transmission ratio and good self-locking characteristics during transmission, which is conducive to achieving precise control and stable maintenance of the spindle 310's rotational speed.

[0061] Both ends of the spindle 310 are provided with ball joint grooves 311 for engaging with the transmission joint balls 222 at both ends of the transmission shaft 220. The transmission shaft 220 includes a telescopic rod 221 and transmission joint balls 222 arranged at both ends of the telescopic rod 221. The transmission joint balls 222 can rotate relative to each other within the ball joint grooves 311 and are allowed to deflect at a certain angle.

[0062] When a single spindle 310 driven by the worm gear drive 230 rotates, its rotational motion is transmitted to the drive shaft 220 through the meshing of the ball socket 311 and the transmission ball 222. The drive shaft 220 then synchronously transmits the rotational power to the spindles 310 in the adjacent pipe feed rollers 300, thereby causing the spindles 310 of multiple pipe feed rollers 300 to rotate in a coordinated manner.

[0063] Because the telescopic rod 221 in the transmission shaft 220 has axial telescopic capability, and the transmission joint ball 222 and the ball groove 311 have a spherical fit structure, the pipe feed rollers 300 can still maintain a stable power transmission relationship when the radial adjustment position changes, thereby ensuring the synchronous rotation of multiple pipe feed rollers 300 at different radial positions.

[0064] Through the above structure and working process, the worm gear drive 230 only needs to drive the spindle 310 of one of the pipe feeding rollers 300 to realize the linkage rotation of multiple pipe feeding rollers 300 through the transmission shaft 220. While simplifying the drive structure, it ensures the consistency and coordination of multiple sets of pipe feeding rollers in the process of conveying and rotating plastic composite pipes.

[0065] Working principle and usage process of this invention:

[0066] This invention uses a pipe feeder to clamp, axially transport, and rotate plastic composite pipes, and uses an electric heating box to heat and seal the pipe ends, thus achieving integrated operation of plastic composite pipes in the transportation, positioning, and sealing processes. Its working principle and usage process are as follows.

[0067] During operation, the plastic composite pipe is first inserted and positioned within the pipe feeder 1. Multiple pipe feed rollers within the pipe feeder 1 radially clamp the outer surface of the plastic composite pipe, maintaining a stable axial position and radial orientation within the pipe feeder 1. Driven by the pipe feeder 1, the plastic composite pipe is conveyed along its own axis while being clamped, and simultaneously maintains its rotational motion during conveying.

[0068] By controlling the radial displacement of the pipe feeder 1, the plastic composite pipe gradually moves towards the electric heating box 3 during axial transport, so that the end of the plastic composite pipe faces and approaches the heating surface of the electric heating box 3. The end of the plastic composite pipe is heated by thermal radiation from the electric heating box 3. During this process, the pipe feeder 1 continuously drives the plastic composite pipe to rotate around its own axis, causing the end face of the plastic composite pipe to rotate relative to the electric heating box 3, softening the end and facilitating heat fusion connection with the sealing cap.

[0069] Because the plastic composite tube maintains its rotation state during the heating process, each position at the end of the plastic composite tube can sequentially contact the heating surface of the electric heating box 3, thereby making the end face more uniformly heated and avoiding local overheating or underheating. This is beneficial to improving the consistency of the melting state of the plastic composite tube end and the sealing quality.

[0070] Once the end of the plastic composite tube reaches the preset heating state, it can be conveyed axially in the opposite direction via the tube feeder 1, causing the end of the plastic composite tube to detach from the electric heating box 3 and proceed to subsequent processes or complete the sealing operation. Through the above process, the present invention achieves coordinated control of the plastic composite tube during clamping, conveying, rotation, and end heating, improving the stability of the sealing process and the quality of the finished product.

[0071] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A plastic composite pipe sealing and feeding integrated machine, comprising a pipe feeding frame, a pipe support base, and an electric heating box arranged along the same axis, characterized in that: The pipe feeding frame includes a support frame, a positioning guide group, and a pipe feeding roller. A drive motor is fixedly installed on the surface of the support frame, and a sliding guide ring is rotatably installed thereon. The output end of the drive motor is provided with a gear plate that meshes with the surface of the sliding guide ring for transmission. Several radially arranged sliding grooves are opened on the surface of the support frame. The positioning guide assembly includes several bearing seats, a transmission shaft, and a worm gear drive fixed to the surface of one of the bearing seats. The pipe feeding wheel is rotatably mounted on the surface of the bearing seat. A sliding rod is fixedly connected to the surface of the bearing seat, and the sliding rod is slidably sleeved on the inner side of the sliding groove. A guide pin is fixedly mounted on the surface of the sliding rod. An arc-shaped sliding groove is formed on the surface of the sliding guide ring, and the guide pin is slidably sleeved on the inner side of the arc-shaped sliding groove. The feeding roller includes a mandrel, a hub sleeve, and several rollers. The hub sleeve is rotatably fitted onto the outside of the mandrel. Each bearing seat surface is provided with a hub motor for driving the hub sleeve to rotate. Several shaft pin seats are fixedly installed on the surface of the hub sleeve. The rollers are rotatably installed on the surface of the shaft pin seats and are evenly distributed circumferentially on the outer periphery of the hub sleeve. The outer periphery of the mandrel is provided with worm gear spiral ridges. The rollers have a spindle-shaped structure and their surfaces are provided with worm gear grooves that mesh with the worm gear spiral ridges. Both ends of the mandrel are provided with ball joint grooves for engaging with the drive shaft, and the surface of the mandrel is provided with grooves for engaging with the output end of the worm gear drive component. The transmission coupling groove; the surface worm gear groove of the abutment wheel has a worm gear tooth structure, and the worm gear spiral ridges are arranged in a spiral shape on the surface of the mandrel. The surface of the hub sleeve is provided with several through holes corresponding to the abutment wheel. The outer periphery of the abutment wheel meshes with the worm gear spiral ridges through the through holes for transmission; the transmission shaft includes a telescopic rod and transmission joint balls arranged at both ends of the telescopic rod. The transmission joint balls are sleeved in the ball socket groove of the mandrel. The inner side of the ball socket groove is provided with several circumferentially distributed arc-shaped sliding teeth. The surface of the transmission joint balls is provided with tooth grooves adapted to the arc-shaped sliding teeth, so that adjacent feeding pipe abutment wheels can achieve transmission and synchronous rotation through the transmission shaft.

2. The plastic composite pipe sealing and feeding integrated machine according to claim 1, characterized in that: The arc-shaped sliding grooves are arranged on the surface of the sliding guide ring in an arc shape, and their number corresponds one-to-one with each of the sliding rods. The two ends of the arc-shaped sliding grooves are close to the axial center and the outer periphery of the sliding guide ring, respectively. When the drive motor drives the sliding guide ring to deflect relatively, it guides the bearing seat to slide in the radial direction.

3. The plastic composite pipe sealing and feeding integrated machine according to claim 1, characterized in that: The drive motor is a geared motor structure used to drive the sliding guide ring to rotate. The sliding guide ring and the drive motor are arranged coaxially, and both are ring-shaped to allow the plastic composite pipe to pass through.

4. The plastic composite pipe sealing and feeding integrated machine according to claim 1, characterized in that: The worm drive includes a motor and a worm gear ring. The worm gear ring is sleeved on the surface of the spindle and is adapted to and meshes with the engagement groove structure on the inner side of the spindle for transmission.

5. The plastic composite pipe sealing and feeding integrated machine according to claim 1, characterized in that: The number of the axle pin seats and the abutment wheels is several and they are divided into two groups. The two groups of axle pin seats and abutment wheels are arranged in a circumferential direction on the outer periphery of the hub sleeve, and the two groups are staggered to each other, so that at least one abutment wheel is always in contact with the outer surface of the plastic composite pipe during the rotation of the hub sleeve.

6. The plastic composite pipe sealing and feeding integrated machine according to claim 1, characterized in that: The spindle and the hub sleeve are independently driven and rotated by the hub motor and the worm gear drive, respectively.

7. The plastic composite pipe sealing and feeding integrated machine according to claim 1, characterized in that: The pipe feeding rack is used to transport and rotate the plastic composite pipe along the axial direction of the electric heating box. The electric heating box is used to heat melt and seal the ends of the plastic composite pipe. The top surface of the support base is provided with ball bearings to support the movement of the plastic composite pipe.

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