A continuous winding forming device for a socket pipe

Abstract

The application discloses a continuous winding forming device for a socket pipe, which comprises a winding forming mechanism and a feeding mechanism. The winding forming mechanism comprises a frame body and a forming cage. The forming cage comprises a suspension arm arranged in a cantilever shape on the frame body. The outer end of the suspension arm is provided with a coaxial fixing disc. A forming roller parallel to the suspension arm is rotatably arranged on the fixing disc. The forming roller is uniformly arranged with a plurality of forming rollers along the circumference of the suspension arm. The forming roller comprises a main roller. The one end of the main roller towards the frame body is provided with a sleeve roller which can move axially. The one end of the sleeve roller away from the frame body is an adapter section with gradually decreasing diameter. The main roller and the sleeve roller are provided with a guide mechanism which can transmit torque in the circumference. The forming cage is provided with a feeding driving mechanism for driving the sleeve roller to move along the axial direction of the main roller. The integrated winding device has the advantages of reasonable structure design, continuous winding forming pipe body and socket head, and the like, which is favorable for reducing production cost, improving production efficiency and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe production, in particular to a continuous winding forming device for socket and spigot type pipe. BACKGROUND

[0002] Composite winding pipe is a new type of special-shaped structure wall pipe, which has the advantages of light weight, high pressure bearing capacity, high quality of interface, long service life, corrosion resistance, high ring stiffness, convenient construction and the like, and is widely used in city water supply, drainage, long-distance water transmission and farmland water conservancy irrigation engineering. The composite winding pipe is spirally wound by strip-shaped profiles, and the side edges of the adjacent profiles of the next circle of profiles are buckled and clamped to form a pipe. In order to increase the strength of the connection, adhesive is usually used to connect at the buckling position.

[0003] At present, the composite winding pipe is formed and manufactured by continuous winding process. For example, a kind of HDPE winding pipe production equipment disclosed in Chinese patent document with publication number CN108000858A adopts a driving assembly and a roller, rotatable rollers are arranged between the two end plates of the roller, the rollers are arranged uniformly in the circumferential direction, each roller rotates synchronously in the same direction under the driving of the driving assembly, and the strip material wound on the roller is continuously wound and formed by the rotation of the roller under the condition that the whole roller does not rotate. The continuous forming process of the pipe body moves outward along the axial direction and continuously grows. In this way, the inner diameter of the pipe body must be consistent with the diameter of the circumscribed circle of the plurality of rollers.

[0004] However, in engineering construction, the composite winding pipe is installed in sections, and the adjacent two end composite winding pipes need to be sealed and connected. Therefore, the existing composite winding pipe needs to be separately manufactured with a socket head with an inner diameter matching the outer diameter of the composite winding pipe, and the socket head is welded to one end of the composite winding pipe, so as to facilitate the sealing and connection of the two pipe sections by the socket head in the construction process. This post-welded socket head needs to increase the socket head processing equipment, and the welding can only be completed by manual work, which not only affects the production efficiency, but also increases the production cost. SUMMARY

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present application is how to provide an integrated winding device with reasonable structure design, which can continuously wind and form a pipe body and a socket head, and is beneficial to reduce production cost and improve production efficiency.

[0006] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0007] A continuous winding forming device of a socket pipe comprises a winding forming mechanism and a feeding mechanism for hot extruding continuous strips, the winding forming mechanism comprises a frame and a cylindrical forming cage, the feeding mechanism is located at one side of the forming cage, so that the discharge end of the feeding mechanism can deliver continuous strips along the tangent line of the forming cage; the forming cage comprises a cantilevered suspension arm arranged on the frame, the outer end of the suspension arm is provided with a coaxial fixing disc, a forming roller parallel to the suspension arm is rotatably arranged on the fixing disc, and a plurality of forming rollers are uniformly arranged along the circumference of the suspension arm; the other end of the forming roller is rotatably arranged on the frame, and the frame is provided with a rotary driving mechanism for driving the plurality of forming rollers to rotate in the same direction; the forming roller comprises a main roller, an axially movable sleeve roller is sleeved on one end of the main roller towards the frame, the inner diameter of the sleeve roller is consistent with the diameter of the main roller, and the other end away from the frame is a gradually tapered connecting section; the guiding mechanism for transmitting torque in the circumference direction is arranged between the main roller and the sleeve roller, and the guiding mechanism is located at one end of the main roller and the sleeve roller towards the frame; the forming cage is provided with a feeding driving mechanism for driving the sleeve roller to move along the axial direction of the main roller.

[0008] In the above structure, since the sleeve roller is sleeved on the main roller, the outer diameter of the sleeve roller is necessarily larger than the diameter of the main roller, and the diameter of the circumscribed circle of the plurality of sleeve rollers is necessarily larger than the diameter of the circumscribed circle of the plurality of main rollers; since the sleeve roller has a tapered connecting section at the end away from the frame, the diameter of the circumscribed circle at the connecting section is also gradually reduced. During winding forming, the plurality of main rollers start to wind at the position close to the sleeve roller, the rotary driving mechanism drives the plurality of main rollers to rotate in the same direction, so that the continuous strips are wound and formed on the outer surface of the forming cage, the formed pipe body moves outward along the direction away from the frame, and continuously forms subsequent pipe bodies. When the length of the pipe body reaches the expected length, the sleeve roller is pushed outward at the speed of the forward movement of the pipe body through the feeding driving mechanism, and the newly wound continuous strips gradually form an enlarged pipe body under the action of the connecting section, and finally are wound on the sleeve roller to form a socket pipe body.

[0009] Further, the feeding driving mechanism comprises a push disc coaxially sleeved outside the suspension arm, the push disc is provided with a clearance hole corresponding to the main roller, one end of the sleeve roller towards the frame is rotatably matched on the clearance hole through a bearing, and the frame is provided with a linear extension and contraction mechanism arranged in parallel with the suspension arm, and the push disc is connected to the extension and contraction end of the linear extension and contraction mechanism.

[0010] The sleeve roller is installed on the clearance hole of the push disc through a bearing, so that the sleeve roller can rotate with the main roller and move along the axial direction of the main roller under the action of the push disc. All sleeve rollers are connected through the push disc, so that the linear extension and contraction mechanism can drive all sleeve rollers to move simultaneously.

[0011] Further, the pushing disc is provided with first reinforcing ribs extending in the radial direction and second reinforcing ribs extending in the circumferential direction, the first reinforcing ribs are distributed along the circumferential direction of the pushing disc, and the second reinforcing ribs are distributed along the radial direction.

[0012] In this way, the first reinforcing ribs and the second reinforcing ribs can increase the rigidity of the pushing disc, avoid deformation of the pushing disc during axial movement, and affect the smoothness of the operation, thereby prolonging the service life.

[0013] Further, the pushing disc is provided with pushing rods arranged in parallel with the suspension arms on one side of the pushing disc, the pushing rods are uniformly distributed along the circumferential direction of the pushing disc, the pushing rods penetrate into the frame, and a push-pull disc is installed.

[0014] In this way, the push-pull disc can uniformly disperse the pushing force or pulling force of the linear extension mechanism through the circumferentially uniformly distributed pushing rods, so that the pushing disc can move more stably, avoid damage caused by uneven load, and prolong the service life.

[0015] Further, the linear extension mechanism is a hydraulic cylinder.

[0016] Further, the guide mechanism is an external spline arranged on the main roller and an internal spline arranged on the sleeve roller.

[0017] In this way, the internal spline and the external spline can cooperate to transmit power more stably.

[0018] Further, the sleeve roller includes a forming sleeve and a first guide sleeve, the forming sleeve is integrally connected to the connecting section, the internal spline is arranged on the first guide sleeve, and the first guide sleeve is fixedly connected to the forming sleeve.

[0019] Further, the main roller includes a roller body and a second guide sleeve sleeved on the roller body, the external spline is arranged on the second guide sleeve, and the second guide sleeve is fixed to the roller body by bolts.

[0020] With this structure, the existing winding device can be easily upgraded, thereby greatly reducing the equipment cost.

[0021] Further, one end of the main roller penetrates into the frame, the rotary driving mechanism includes a driven sprocket arranged on the main roller and a driving motor, the output end of the driving motor is provided with a driving sprocket, and the driving sprocket and the plurality of driven sprockets are connected by a chain.

[0022] Further, the sleeve roller has an insertion shaft segment matched with the let-hole, the insertion shaft segment is arranged in the let-hole, the insertion shaft segment has a relatively protruding stop ring, both sides of the let-hole have a thrust bearing arranged on the insertion shaft segment, one of the thrust bearings is abutted between the stop ring and the push disc, the other thrust bearing is provided with a stop ring on the side away from the push disc, and the stop ring is fixedly installed on the sleeve roller.

[0023] In this way, the thrust bearings are arranged on both sides of the push disc, the friction between the sleeve roller and the push disc during the pushing and pulling of the push disc is reduced, and the winding and forming is more smooth.

[0024] In conclusion, the integrated winding device has the advantages of reasonable structure design, continuous winding and forming of the pipe body and the socket, reduced production cost, improved production efficiency and the like. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the embodiment.

[0027] Figure 3 It is a schematic diagram of the structure of the push disc and the forming roller.

[0028] Figure 4 It is a schematic diagram of the exploded structure of the push disc and the forming roller. Figure 3

[0029] Figure 5 It is a schematic diagram of the arrangement of the sprocket.

[0030] Figure 6 It is a schematic diagram of the overall structure of the pressure roller mechanism.

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the pressure roller mechanism.

[0032] Figure 8 It is a schematic diagram of the structure of the pressure roller frame.

[0033] Figure 9 It is a schematic diagram of the exploded structure of the pressure roller frame. DETAILED DESCRIPTION

[0034] The application will be further described in detail below in combination with the embodiments.

[0035] In the specific implementation, for example, Figures 1-5 ​As shown, a continuous winding forming device for socket pipe comprises a winding forming mechanism and a feeding mechanism for hot extruding continuous strip, the winding forming mechanism comprises a frame body 1 and a cylindrical forming cage 2, the feeding mechanism is located at one side of the forming cage 2, so that the discharging end of the feeding mechanism can convey the continuous strip along the tangent line of the forming cage 2; the forming cage 2 comprises a cantilevered suspension arm 21 arranged on the frame body 1, the outer end of the suspension arm 21 is provided with a coaxial fixed disc 22, the fixed disc 22 is rotatably provided with a forming roller 23 parallel to the suspension arm 21, and a plurality of forming rollers 23 are uniformly arranged along the circumference of the suspension arm 21; the other end of the forming roller 23 is rotatably arranged on the frame body 1, and the frame body 1 is provided with a rotary driving mechanism 3 for driving a plurality of forming rollers 23 to rotate in the same direction; the forming roller 23 comprises a main roller 231, an axially movable sleeve roller 232 is sleeved on one end of the main roller 231 towards the frame body 1, the inner diameter of the sleeve roller 232 is consistent with the diameter of the main roller 231, and the other end away from the frame body 1 is a gradually tapered connecting section 233; the main roller 231 and the sleeve roller 232 are provided with a guide mechanism for transmitting torque in the circumferential direction, and the guide mechanism is located at one end of the main roller 231 and the sleeve roller 232 towards the frame body 1; the forming cage 2 is provided with a feeding driving mechanism 4 for driving the sleeve roller 232 to move along the axial direction of the main roller 231.

[0036] The feeding driving mechanism 4 comprises a push disc 41 coaxially sleeved outside the suspension arm 21, the push disc 41 is provided with a clearance hole corresponding to the main roller 231, and one end of the sleeve roller 232 towards the frame body 1 is rotatably matched on the clearance hole through a bearing; the frame body 1 is provided with a linear telescopic mechanism parallel to the suspension arm 21, and the push disc 41 is connected to the telescopic end of the linear telescopic mechanism. The sleeve roller is installed on the clearance hole of the push disc through a bearing, so that the sleeve roller can rotate with the main roller and move along the axial direction of the main roller under the action of the push disc. All sleeve rollers are connected through the push disc, so that the linear telescopic mechanism can drive all sleeve rollers to move at the same time.

[0037] In order to increase the overall rigidity of the push disc 41, the push disc 41 is provided with a first reinforcing rib extending in the radial direction and a second reinforcing rib extending in the circumferential direction, a plurality of first reinforcing ribs are arranged along the circumferential direction of the push disc 41, and a plurality of second reinforcing ribs are arranged along the radial direction. The first reinforcing rib and the second reinforcing rib can increase the rigidity of the push disc, avoid deformation of the push disc during axial movement, affect the smoothness of the action, and prolong the service life.

[0038] The push disc 41 has a push rod 42 arranged in parallel with the suspension arm 21 on one side of the frame body 1. The push rod 42 is arranged in a plurality of circumferential directions of the push disc 41. The plurality of push rods 42 are inserted into the frame body 1 and are provided with a push-pull disc 43. The telescopic end of the linear telescopic mechanism is connected to the push-pull disc 43, as shown in the figure. The linear telescopic mechanism in the figure is a hydraulic cylinder. The push-pull disc can evenly disperse the pushing force or pulling force of the linear telescopic mechanism to the push disc through the circumferentially arranged push rods, so that the push disc can move more stably, avoid damage caused by uneven load, and prolong the service life. Figure 2

[0039] The guide mechanism is an outer spline arranged on the main roller 231 and an inner spline arranged on the sleeve roller 232. As shown in the figures, the sleeve roller 232 includes a forming sleeve and a first guide sleeve 234. The forming sleeve is integrally connected to the connecting section 233. The inner spline is arranged on the first guide sleeve 234, and the first guide sleeve 234 is fixedly connected to the forming sleeve. The main roller 231 includes a roller body and a second guide sleeve 235 sleeved on the roller body. The outer spline is arranged on the second guide sleeve 235, and the second guide sleeve 235 is fixed to the roller body by bolts. Figure 3 Figure 4

[0040] In this way, the forming mechanism for the continuous forming pipe with a constant inner diameter in the prior art (such as the rotating roller in CN108000858A) can be improved. By installing a second guide sleeve on the main roller of the existing device, and cooperatively sleeving a first guide sleeve and a sleeve roller, and additionally installing a push disc, a push rod, and a hydraulic cylinder, the existing equipment can be low-cost modified, which reduces production costs and improves production efficiency. Moreover, the continuous winding and forming of the socket head and the pipe body has higher connection strength, thereby improving product quality and market competitiveness.

[0041] The sleeve roller 232 has an insertion shaft section matched with the accommodation hole, and the insertion shaft section is arranged in the accommodation hole. The insertion shaft section has a protruding retaining ring 236. The two sides of the accommodation hole are provided with a thrust bearing 237 sleeved on the insertion shaft section. One of the thrust bearings 237 abuts between the retaining ring 236 and the push disc 41, and the other thrust bearing 237 is provided with a retaining ring on the side away from the push disc 41, and the retaining ring is fixedly installed on the sleeve roller 232. In this way, the thrust bearings are arranged on both sides of the push disc, which can reduce the friction between the sleeve roller and the push disc during the pushing and pulling of the push disc, thereby making the winding and forming more smooth.

[0042] ​​​One end of the main roller 231 extends into the frame body 1, the rotating drive mechanism includes a driven sprocket arranged on the main roller 231 and a drive motor, the output end of the drive motor is provided with a driving sprocket, and the driving sprocket and a plurality of driven sprockets are connected with a chain, as shown in Figure 5 Two adjacent main rollers 231 are provided with auxiliary wheels, the chain sequentially passes through the driven sprocket and the auxiliary wheel, and at least one auxiliary wheel or driven sprocket is connected with the drive motor. That is, the auxiliary wheel or driven sprocket connected with the drive motor is the driving sprocket.

[0043] In the existing winding forming device, in order to adapt to the winding of pipes with different inner diameters, a slot extending radially outward is arranged on the frame 1, and by cooperating with other adjusting mechanisms, all the main rollers can uniformly expand outward or shrink inward, so as to change the diameter of the circumscribed circle of the main roller. For this structure, in the specific implementation, an adjusting slot extending radially outward can be arranged on the push disc 41, an adjusting block is slidably clamped in the adjusting slot, and the accommodation hole is penetratingly arranged on the adjusting block. In this way, the existing equipment can be adapted to the modification.

[0044] In order to make the continuous strip material more closely adhere to the forming cage during continuous winding forming, a pressure roller mechanism is usually added. The existing pressure roller is mostly an integral cylindrical structure, which is mainly used for continuous winding pipes with constant pipe diameter. In the embodiment, the pipe diameter is transitioned at the connection section. During winding, one part of the strip material is wound with a smaller pipe diameter, and the other part is wound with a larger pipe diameter. In order to make the continuous strip material better adhere to the connection section and realize variable-diameter winding, the pressure roller mechanism with the following structure is adopted in the embodiment. As shown in Figures 6-9 The installation frame body includes a support shaft 702, one end of the pressure roller frame 701 is rotatably sleeved on the support shaft 702, the other end is rotatably provided with a pressure roller sheet 703, and the axial line of the pressure roller sheet 703 is parallel to the support shaft 702; a plurality of pressure roller frames 701 are arranged side by side along the support shaft 702; the installation frame body includes side plates 704 connected to both ends of the support shaft 702, and the two side plates 704 are closely arranged outside the plurality of pressure roller frames 701; one side of the pressure roller sheet 703 protruding in the circumferential direction of the support shaft 702 relative to the pressure roller frame 701 is a pressure side, and each pressure roller frame 701 and the installation frame body have an elastic return member 705 rotating the pressure roller frame 701 towards the pressure side.

[0045] As shown in Figure 6As shown, a limiting plate 706 is connected between the two side plates 704, and is located on the side of the pressing wheel frame 701 away from the support shaft 702. The limiting plate 706 has a limiting strip protruding towards the pressing wheel frame 701, and the limiting strip is located on the pressing side of the pressing wheel frame 701. A beam plate 707 is connected between the two side plates 704, and is located on the side of the support shaft 702 towards the pressing side. The elastic return member 705 is a tension spring connected between the beam plate 707 and the pressing wheel frame 701.

[0046] As shown in Figure 8 and Figure 9 The pressing wheel frame 701 has a semicircular rolling groove, and the diameter of the rolling groove matches the diameter of the pressing wheel piece 703. The pressing wheel piece 703 is rotatably connected in the rolling groove, and the thickness of the pressing wheel piece 703 matches the thickness of the pressing wheel frame 701. One side of the rolling groove is provided with a limiting block 708, and the inner side of the limiting block 708 has an arc surface concentrically connected with the rolling groove. The sum of the central angles of the arc surface and the rolling groove is greater than 180°. The pressing wheel piece 703 is rotatably connected on the arc surface. Specifically, one side of the rolling groove is provided with a threaded hole, the limiting block 708 is provided with a bolt hole penetrating through the limiting block 708 and matching the threaded hole, and the limiting block 708 is installed on the threaded hole through the bolt penetrating through the bolt hole. In order to make the pressing wheel piece rotate more smoothly, the inner wall of the rolling groove has rotatable balls, and the balls are uniformly distributed along the circumference of the rolling groove. The outer circular surface of the pressing wheel piece 703 is matched with the balls.

[0047] The pressing wheel structure of the embodiment is adopted. Since the pressing wheel frame is in the form of a sheet, a plurality of pressing wheel frames are arranged side by side on the support shaft, and each of the pressing wheel frames has an elastic return member between the pressing wheel frame and the mounting frame. In this way, the pressing wheel pieces on the plurality of pressing wheel frames are combined into a pressing wheel. When the continuous strip is pressed on the surface of the forming cage, the reaction force borne by each pressing wheel frame is independent, and the rotation angle of each pressing wheel frame relative to the support shaft is also different with the change of the outer diameter of the surface of the forming mold. Therefore, the forming mold with different diameters can be adapted, and the continuous strip is always attached to the surface of the forming mold, which is beneficial to improve the forming quality of the winding pipe.

[0048] The winding process of the continuous winding forming device of the embodiment for the socket pipe is as follows:

[0049] 1. The continuous strip is pressed on the surface of the main roller by the pressing wheel mechanism, and is continuously formed in a spiral shape around the forming cage with the rotation of the main roller.

[0050] 2. Once the length of the formed tube meets the preset length, the pusher plate is pushed outward by the hydraulic cylinder, and the pushing speed is controlled to be consistent with the feeding speed of the formed tube. At this time, the sleeve roller and the tube are moving synchronously, which can ensure the stability and reliability of the winding.

[0051] 3. After the winding length of the socket section meets the preset length, the continuous strip is cut and the end is shaped. The hydraulic cylinder pulls the push plate to retract the sleeve roller, preparing for the next pipe winding.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous winding forming apparatus for a socket-type pipe, comprising a winding forming mechanism and a feeding mechanism for hot extrusion of continuous strip, wherein the winding forming mechanism comprises a frame (1) and a cylindrical forming cage (2), and the feeding mechanism is located on one side of the forming cage (2), such that the discharge end of the feeding mechanism can convey the continuous strip along the tangent of the forming cage (2); characterized in that, The forming cage (2) includes a cantilever arm (21) mounted on the frame (1) in a cantilever shape. The outer end of the cantilever arm (21) has a coaxially mounted fixed disk (22). A forming roller (23) parallel to the cantilever arm (21) is rotatably mounted on the fixed disk (22). Multiple forming rollers (23) are evenly distributed along the circumference of the cantilever arm (21). The other end of each forming roller (23) is rotatably mounted on the frame (1). The frame (1) has a rotary drive mechanism (3) that drives multiple forming rollers (23) to rotate in the same direction. Each forming roller (23) includes a main roller (231). A sleeve roller (232) that can move axially is fitted on one end of the main roller (231) facing the frame (1). The inner diameter of the sleeve roller (232) is the same as the diameter of the main roller (231), and the end away from the frame (1) is a connecting section (233) with a gradually decreasing diameter. There is a guide mechanism between the main roller (231) and the sleeve roller (232) that can transmit torque circumferentially. The guide mechanism is located at the end of the main roller (231) and the sleeve roller (232) facing the frame (1). The forming cage (2) has a feed drive mechanism (4) for driving the sleeve roller (232) to move axially along the main roller (231). The feed drive mechanism (4) includes a push plate (41) coaxially sleeved outside the suspension arm (21). The push plate (41) has a clearance hole corresponding to the main roller (231). The end of the sleeve roller (232) facing the frame (1) is rotatably fitted into the clearance hole through a bearing. The frame (1) has a linear telescopic mechanism arranged parallel to the suspension arm (21). The push plate (41) is connected to the telescopic end of the linear telescopic mechanism. The guide mechanism consists of an external spline on the main roller (231) and an internal spline on the sleeve roller (232).

2. The continuous winding forming device for socket-type pipes as described in claim 1, characterized in that, The push plate (41) has a first reinforcing rib extending radially and a second reinforcing rib arranged circumferentially. Multiple first reinforcing ribs are distributed circumferentially along the push plate (41), and multiple second reinforcing ribs are distributed radially.

3. The continuous winding forming device for socket-type pipes as described in claim 1, characterized in that, The push plate (41) has a push rod (42) on the side facing the frame (1) that is parallel to the cantilever arm (21). Multiple push rods (42) are evenly distributed along the circumference of the push plate (41). Multiple push rods (42) are inserted into the frame (1) and are mounted on a push-pull plate (43). The telescopic end of the linear telescopic mechanism is connected to the push-pull plate (43).

4. The continuous winding forming device for socket-type pipes as described in claim 3, characterized in that, The linear telescopic mechanism is a hydraulic cylinder.

5. The continuous winding forming apparatus for socket-type pipes as described in claim 1, characterized in that, The roller (232) includes a forming sleeve and a first guide sleeve (234), the forming sleeve being integrally connected to the connecting section (233); the internal spline is disposed on the first guide sleeve (234), and the first guide sleeve (234) is fixedly connected to the forming sleeve.

6. The continuous winding forming apparatus for socket-type pipes as described in claim 1, characterized in that, The main roller (231) includes a roller body and a second guide sleeve (235) sleeved on the roller body; the external spline is disposed on the second guide sleeve (235), and the second guide sleeve (235) is fixed on the roller body by bolts.

7. The continuous winding forming apparatus for socket-type pipes as described in claim 1, characterized in that, One end of the main roller (231) extends into the frame (1). The rotary drive mechanism (3) includes a driven sprocket (31) and a drive motor mounted on the main roller (231). The output end of the drive motor is provided with a drive sprocket (32). Chains (33) are connected to the drive sprocket (32) and a plurality of driven sprockets (31).

8. The continuous winding forming apparatus for socket-type pipes as described in claim 1, characterized in that, The roller (232) has an insert shaft section that matches the relief hole, and the insert shaft section passes through the relief hole; the insert shaft section has a relatively protruding retaining ring (236), and both sides of the relief hole have thrust bearings (237) sleeved on the insert shaft section, one of the thrust bearings (237) abuts between the retaining ring (236) and the push plate (41), and the other thrust bearing (237) has a retaining ring on the side away from the push plate (41), and the retaining ring is fixedly installed on the roller (232).

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