Full-automatic polishing machine for bent pipe
By designing a fully automatic pipe bending polishing machine, a conductive ring and carbon brush are used to achieve non-rotation polishing of bent pipes. Combined with a conveying and driving device, the problems of low polishing efficiency and inconvenient automatic conveying of bent pipes are solved, thereby improving processing efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 田建军
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-24
AI Technical Summary
Existing pipe bending and polishing equipment has low polishing efficiency and is not convenient for automatic conveying, resulting in insufficient ease of use and precision.
A fully automatic polishing machine for bent pipes was designed, comprising a grinding mechanism, a drive device, a conveying device, a ring track, a conductive ring, and a carbon brush. By using the conductive ring and the carbon brush in combination, 360-degree surface polishing of the bent pipe is achieved without rotation. The automatic conveying and circumferential polishing of the bent pipe are achieved through the coordinated action of the conveying device and the drive device.
It improves the convenience and efficiency of pipe bending polishing, enhances processing accuracy, reduces usage limitations, and improves the convenience of automatic pipe bending conveying.
Smart Images
Figure CN224158233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of polishing machines, and in particular to a fully automatic polishing machine for bending pipes. Background Technology
[0002] In the field of pipe processing and manufacturing, bends are key components for connecting and transporting fluids or gases. Their surface quality directly affects the system's sealing performance, corrosion resistance, and overall aesthetics, thus requiring grinding and polishing.
[0003] Hand-held grinding with a handheld grinder is time-consuming and labor-intensive, and it is difficult to achieve the required precision on the workpiece surface. While existing straight pipes can be polished mechanically, bent pipes cannot rotate on a track due to their curvature, so there is currently no suitable machine to replace manual polishing.
[0004] For example, in existing pipe bending and polishing equipment, such as the patent with authorization announcement number CN218965101U, this utility model discloses a pipe bending and polishing machine, which relates to the field of pipe bending and polishing technology. It includes: a base plate, on the upper surface of the base plate, a mounting seat one and a mounting seat two are fixedly connected, a control pulley is provided on the mounting seat one, a control motor is provided on the mounting seat one, the output end of the control motor is fixedly connected to the control pulley, a polishing disc is provided on the mounting seat two, a drive belt is provided between the control pulley and the polishing disc, and two polishing mechanisms are provided on the polishing disc.
[0005] However, it was found during the use of the polishing equipment that it had low polishing efficiency for bent pipes, and that the equipment was not convenient for automatically conveying bent pipes, which reduced the ease of use. Utility Model Content
[0006] To solve the above-mentioned technical problems, this utility model provides a fully automatic pipe polishing machine that realizes polishing during the moving and conveying of bent pipes, achieves polishing effect on different positions of the surface of the bent pipe without rotating it, improves the convenience of polishing large bent pipes, increases processing efficiency, and improves the convenience of automatic conveying of bent pipes.
[0007] This utility model discloses a fully automatic polishing machine for bent pipes, comprising a machine body and a cylinder, the cylinder being rotatably mounted on the inner side wall of the machine body; it also includes a grinding mechanism, a drive device, a conveying device, an annular track, a conductive ring, and carbon brushes. The annular track and the conductive ring are respectively disposed on the outer side wall of the cylinder, and the carbon brushes are mounted on the inner side wall of the machine body, with the carbon brushes in frictional contact with the conductive rings. Multiple sets of grinding mechanisms are disposed on the cylinder, used for polishing the bent pipes, and the conductive rings are electrically connected to the multiple sets of grinding mechanisms. The machine body is provided with a drive device for driving the cylinder to rotate, and a conveying device is disposed on the side of the machine body for conveying the bent pipes... Automatic conveying: The bent pipe to be polished is placed on the conveying device, which automatically conveys the bent pipe to the space between cylinders. The drive device rotates the cylinders, causing multiple grinding mechanisms to move circumferentially. Simultaneously, the rotating grinding mechanisms polish the surface of the bent pipe 360 degrees, achieving polishing during the bending pipe's movement and conveying process. Furthermore, the use of conductive rings and carbon brushes allows for polishing of different areas of the bent pipe's surface without rotation, improving the convenience and efficiency of polishing large bent pipes, enhancing the convenience of automatic conveying, and improving processing accuracy.
[0008] Preferably, the polishing mechanism includes a traction device, a base, a support arm, a polishing wheel, a tension spring, a first motor, a first pulley, and a first belt. The base is mounted on the inner wall of the cylinder, the end of the support arm is rotatably mounted on the base, the polishing wheel is rotatably mounted on the other end of the support arm, one end of the tension spring is connected to the inner wall of the cylinder, and the other end of the tension spring is connected to the outer wall of the support arm. The first motor is mounted on the inner wall of the cylinder and electrically connected to a conductive ring. A first set of first pulleys is mounted on the output end of the first motor, a second set of first pulleys is connected to the rotating end of the support arm, and a third set of first pulleys is mounted on the rotating end of the polishing wheel. The three sets of first pulleys are connected by a first belt. The transmission and traction device is mounted on the cylinder and is used to traction and swing the support arm. The conveying device transports the bent tube to multiple polishing wheels. Through the coordination of the tension spring and the traction device, the support arm swings and rotates, causing the polishing wheels to contact the surface of the bent tube. At the same time, the tension spring provides elastic tension to the support arm, improving the elastic effect of the contact between the polishing wheels and the bent tube. By starting the first motor, the first motor drives the polishing wheels to rotate through the first pulley and the first belt, causing the polishing wheels to grind and polish the bent tube. Simultaneously, the drive device drives the cylinder to rotate, thereby causing multiple polishing wheels to move circumferentially around the bent tube, achieving the effect of circumferential polishing of the bent tube and improving processing efficiency.
[0009] Preferably, the conveying device includes two sets of supports, two sets of arc-shaped brackets, an arc-shaped housing, two sets of sprockets, a chain, multiple sets of push rollers, multiple sets of first guide rollers, multiple sets of second guide rollers, and a second motor. The two sets of supports are respectively disposed on both sides of the cylinder. The two sets of arc-shaped brackets are respectively installed on the tops of the two sets of supports. The arc-shaped housing is installed on the outer wall of one set of arc-shaped brackets, and an opening is provided on the inner arc surface of the arc-shaped housing. Both sets of sprockets are rotatably mounted on the inner wall of the arc-shaped housing. The chain is fitted onto the two sets of sprockets. Multiple sets of push rollers are respectively installed on the outer wall of the chain, and the push rollers extend outward through the openings in the arc-shaped housing. Multiple sets of first guide rollers are rotatably mounted on the upper and lower sides of the chain, and multiple sets of second guide rollers are rotatably mounted on... On the inner wall of the arc-shaped housing, a second motor is mounted on the outer wall of the arc-shaped housing. The output end of the second motor is connected to one of the sets of sprockets. The bent tube is placed on the arc-shaped bracket with the arc-shaped housing. Then, the second motor drives the sprockets to rotate, so that the two sets of sprockets cooperate to drive the chain to move circumferentially. After the chain moves, it drives multiple sets of push rollers to move, so that the push rollers extending outward push the bent tube to slide and be conveyed on the arc-shaped bracket. In this way, the bent tube is automatically conveyed between multiple sets of polishing wheels, which improves the convenience of automatic conveying of the bent tube. By setting multiple sets of first guide rollers and multiple sets of second guide rollers to guide and support the chain, it is easy to match the shape of the chain with the arc-shaped housing, reduce the wear of the chain on the inside of the arc-shaped housing, and improve the service life.
[0010] Preferably, the traction device includes multiple sets of winding reels, multiple sets of traction ropes, and multiple sets of third motors. The winding reels are rotatably mounted on the inner wall of the cylinder. The traction ropes are respectively connected between the winding reels and the support arms. The third motors are mounted on the inner wall of the cylinder and electrically connected to conductive rings. The output ends of the third motors are respectively connected to the winding reels. The multiple third motors drive the winding reels to rotate, causing them to wind or unwind the traction ropes. When unwinding the traction ropes, multiple tension springs provide tension to the support arms, causing the polishing wheels to move away from each other. Conversely, unwinding causes the polishing wheels to move closer together, improving the convenience of polishing different bent pipes, reducing usage limitations, and increasing adjustment convenience.
[0011] Preferably, the driving device includes a rotating shaft, a drive wheel, a fourth motor, two sets of second pulleys, and a second belt. The rotating shaft is rotatably mounted on the machine body, the drive wheel is mounted on the outer wall of the rotating shaft and contacts the annular track, the fourth motor is mounted on the outer wall of the machine body, and the two sets of second pulleys are respectively mounted on the end of the rotating shaft and the output end of the fourth motor. The two sets of second pulleys are driven by the second belt. The fourth motor drives the rotating shaft to rotate, and the rotation of the drive wheel, in conjunction with the annular track, drives the cylinder to rotate, thereby improving the convenience of circumferential polishing of the bent pipe.
[0012] Preferably, it also includes multiple sets of protective covers, which are respectively installed on multiple sets of grinding mechanisms; by setting multiple sets of protective covers, the protective effect of the first pulley and the first belt is improved, and the impact of processing debris on them is reduced.
[0013] Preferably, the multiple polishing wheels are detachable; by replacing the multiple polishing wheels with different models, the ease of use for different polishing needs is improved.
[0014] Preferably, the polishing mechanism, conveying device, traction device, and driving device are all controlled and adjusted by a controller, a wireless receiver, and a remote control; the operator sends control signals to the wireless receiver using the remote control, so that the wireless receiver can automatically control the operation of the polishing machine through the controller, thereby improving the convenience of use and operation.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the bent pipe to be polished is placed on the conveying device, and the bent pipe is automatically conveyed to the cylinder by the conveying device. The cylinder is driven to rotate by the driving device, so that the cylinder drives multiple sets of polishing mechanisms to move circumferentially. At the same time, the multiple sets of polishing mechanisms rotate to polish the surface of the bent pipe 360 degrees circumferentially, realizing the polishing process during the movement and conveying of the bent pipe. At the same time, through the use of conductive rings and carbon brushes, the polishing effect of different positions on the surface of the bent pipe can be achieved without rotating the bent pipe. This improves the convenience of polishing large bent pipes, improves the processing efficiency, and also improves the convenience of automatic conveying of bent pipes and improves the processing accuracy. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the isometric structure of this utility model;
[0017] Figure 2 This is a partial isometric structural diagram of the connection between the cylinder and the base, etc.
[0018] Figure 3 This is a partial isometric structural diagram of the connection between the cylinder and the circular track, etc.
[0019] Figure 4 This is a partial isometric structural diagram of the connection between the first motor and the first pulley, etc.
[0020] Figure 5 This is a partial isometric structural diagram showing the connection between the arc-shaped housing and the second motor, etc.
[0021] Figure 6 This is a partial isometric structural diagram of the connection between the chain and the first guide roller, etc.
[0022] Figure 7 This is a partial isometric structural diagram showing the connection between the shaft and the drive wheel, etc.
[0023] Figure 8This is an isometric structural diagram showing the connection between the bracket and the arc-shaped support.
[0024] The attached diagram shows the following markings: 101, machine body; 102, cylinder; 103, circular track; 104, conductive ring; 105, carbon brush; 201, base; 202, support arm; 203, polishing wheel; 204, tension spring; 205, first motor; 206, first pulley; 207, first belt; 301, bracket; 302, arc-shaped bracket; 303, arc-shaped shell; 304, sprocket; 305, chain; 306, push roller; 307, first guide roller; 308, second guide roller; 309, second motor; 401, winding wheel; 402, traction rope; 403, third motor; 501, shaft; 502, drive wheel; 503, fourth motor; 504, second pulley; 505, second belt; 601, protective cover. Detailed Implementation
[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example
[0026] like Figures 1 to 8 As shown, this utility model discloses a fully automatic pipe polishing machine, including a machine body 101 and a cylinder 102, with the cylinder 102 rotatably mounted on the inner wall of the machine body 101; it also includes a polishing mechanism, a driving device, a conveying device, an annular track 103, a conductive ring 104, and a carbon brush 105. The annular track 103 and the conductive ring 104 are respectively disposed on the outer wall of the cylinder 102, and the carbon brush 105 is mounted on the inner wall of the machine body 101, and the carbon brush 105 is in frictional contact with the conductive ring 104. Multiple sets of polishing mechanisms are provided on the cylinder 102, which are used to polish the bent pipe, and the conductive ring 104 is electrically connected to the multiple sets of polishing mechanisms. A driving device is provided on the machine body 101, which is used to drive the cylinder 102 to rotate. A conveying device is provided on the side of the machine body 101, which is used to automatically convey the bent pipe.
[0027] like Figure 4As shown, the polishing mechanism includes a traction device, a base 201, a support arm 202, a polishing wheel 203, a tension spring 204, a first motor 205, a first pulley 206, and a first belt 207. The base 201 is mounted on the inner wall of the cylinder 102. The end of the support arm 202 is rotatably mounted on the base 201. The polishing wheel 203 is rotatably mounted on the other end of the support arm 202. One end of the tension spring 204 is connected to the inner wall of the cylinder 102, and the other end of the tension spring 204 is connected to the outer wall of the support arm 202. The motor 205 is installed on the inner wall of the cylinder 102. The first motor 205 is electrically connected to the conductive ring 104. The first set of first pulleys 206 is installed on the output end of the first motor 205. The second set of first pulleys 206 is connected to the rotating end of the support arm 202. The third set of first pulleys 206 is installed on the rotating end of the polishing wheel 203. The three sets of first pulleys 206 are connected by a first belt 207 for transmission. The traction device is set on the cylinder 102 and is used to pull and swing the support arm 202.
[0028] In this embodiment, the bent pipe to be polished is placed on a conveying device, which automatically transports the bent pipe between cylinders 102. The driving device drives the cylinders 102 to rotate, causing the cylinders 102 to drive multiple sets of polishing mechanisms to move circumferentially. At the same time, the rotation of multiple sets of polishing mechanisms polishes the surface of the bent pipe 360 degrees circumferentially, realizing polishing during the movement and transportation of the bent pipe. In addition, the use of conductive rings 104 and carbon brushes 105 allows for polishing of different positions on the surface of the bent pipe without rotation, improving the convenience of polishing large bent pipes, increasing processing efficiency, improving the convenience of automatic conveying of bent pipes, and improving processing accuracy. Example
[0029] Based on Example 1, such as Figure 5As shown, this utility model discloses a fully automatic pipe bending polishing machine. The conveying device includes two sets of supports 301, two sets of arc-shaped brackets 302, an arc-shaped shell 303, two sets of sprockets 304, a chain 305, multiple sets of push rollers 306, multiple sets of first guide rollers 307, multiple sets of second guide rollers 308, and a second motor 309. The two sets of supports 301 are respectively arranged on both sides of the cylinder 102. The two sets of arc-shaped brackets 302 are respectively installed on the top of the two sets of supports 301. The arc-shaped shell 303 is installed on the outer wall of one of the arc-shaped brackets 302. The inner arc surface of the arc-shaped shell 303 is provided with... The device has an opening, with two sets of sprockets 304 rotatably mounted on the inner wall of the arc-shaped housing 303. A chain 305 is fitted onto the two sets of sprockets 304. Multiple sets of push rollers 306 are respectively mounted on the outer wall of the chain 305. The push rollers 306 extend outward through the opening of the arc-shaped housing 303. Multiple sets of first guide rollers 307 are respectively rotatably mounted on the upper and lower sides of the chain 305. Multiple sets of second guide rollers 308 are rotatably mounted on the inner wall of the arc-shaped housing 303. A second motor 309 is mounted on the outer wall of the arc-shaped housing 303. The output end of the second motor 309 is connected to one of the sets of sprockets 304.
[0030] like Figure 4 As shown, the traction device includes multiple sets of winding wheels 401, multiple sets of traction ropes 402, and multiple sets of third motors 403. The multiple sets of winding wheels 401 are all rotatably mounted on the inner side wall of the cylinder 102. The multiple sets of traction ropes 402 are respectively connected between the multiple sets of winding wheels 401 and the multiple sets of support arms 202. The multiple sets of third motors 403 are all mounted on the inner side wall of the cylinder 102 and electrically connected to the conductive ring 104. The output ends of the multiple sets of third motors 403 are respectively connected to the multiple sets of winding wheels 401.
[0031] like Figure 7 As shown, the drive device includes a rotating shaft 501, a drive wheel 502, a fourth motor 503, two sets of second pulleys 504, and a second belt 505. The rotating shaft 501 is rotatably mounted on the machine body 101. The drive wheel 502 is mounted on the outer wall of the rotating shaft 501 and contacts the annular track 103. The fourth motor 503 is mounted on the outer wall of the machine body 101. The two sets of second pulleys 504 are respectively mounted on the end of the rotating shaft 501 and the output end of the fourth motor 503. The two sets of second pulleys 504 are driven by the second belt 505.
[0032] like Figure 1 As shown, it also includes multiple sets of protective covers 601, which are respectively installed on multiple sets of grinding mechanisms;
[0033] like Figure 4 As shown, the multiple polishing wheels 203 are detachable.
[0034] like Figure 1As shown, the grinding mechanism, conveying device, traction device and driving device are all controlled and adjusted by a controller, a wireless receiver and a remote control.
[0035] In this embodiment, the conveying device transports the bent pipe between multiple polishing wheels 203. Through the coordination of the tension spring 204 and the traction device, the support arm 202 swings and rotates, causing the polishing wheels 203 to contact the surface of the bent pipe. Simultaneously, the tension spring 204 provides elastic tension to the support arm 202, improving the elasticity of the contact between the polishing wheels 203 and the bent pipe. By starting the first motor 205, the first motor 205 drives the polishing wheels 203 to rotate via the first pulley 206 and the first belt 207, causing the polishing wheels 203 to polish the bent pipe. At the same time, the driving device drives the cylinder 102 to rotate, causing the multiple polishing wheels 203 to move circumferentially around the bent pipe's pushing roller 306 degrees, achieving circumferential polishing of the bent pipe and improving processing efficiency. The bent tube is placed on the arc-shaped bracket 302 with the arc-shaped housing 303. Then, the second motor 309 drives the sprocket 304 to rotate, so that the two sets of sprockets 304 cooperate to drive the chain 305 to move circumferentially. After the chain 305 moves, it drives multiple sets of push rollers 306 to move, so that the push rollers 306 protruding from the outside push the bent tube to slide and transport on the arc-shaped bracket 302, thereby automatically transporting the bent tube between multiple sets of polishing wheels 203, improving the convenience of automatic transport of the bent tube. By setting multiple sets of first guide rollers 307 and multiple sets of second guide rollers 308 to guide and support the chain 305, it is easy to match the shape of the chain 305 with the arc-shaped housing 303, reducing the wear of the chain 305 on the inside of the arc-shaped housing 303 and improving the service life.
[0036] like Figures 1 to 8 As shown, this utility model discloses a fully automatic pipe polishing machine. During operation, the pipe to be polished is placed on a conveying device, which automatically transports the pipe to the space between cylinders 102. The drive device rotates the cylinders 102, causing multiple grinding mechanisms to move circumferentially. Simultaneously, the rotation of the multiple grinding mechanisms polishes the surface of the pipe 360 degrees circumferentially, achieving polishing during the pipe's movement and conveying process. This achieves the effect of polishing different positions on the surface of the pipe without it rotating.
[0037] The main functions achieved by this utility model are:
[0038] 1. By using the conductive ring 104 and carbon brush 105 together, the surface of the bent pipe can be polished 360 degrees at different positions without rotating, which improves the convenience of polishing large bent pipes and increases processing efficiency.
[0039] 2. Improve the convenience of automatic pipe bending and conveying, and enhance processing accuracy;
[0040] 3. Improve the convenience of polishing different bent pipes and reduce usage limitations.
[0041] The conductive ring 104, carbon brush 105, first motor 205, second motor 309, third motor 403 and fourth motor 503 of the fully automatic pipe bending polishing machine of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A fully automatic pipe bending polishing machine, comprising a machine body (101) and a cylinder (102), the cylinder (102) being rotatably mounted on the inner wall of the machine body (101); characterized in that, It also includes a grinding mechanism, a drive device, a conveying device, a ring track (103), a conductive ring (104), and a carbon brush (105). The ring track (103) and the conductive ring (104) are respectively set on the outer wall of the cylinder (102). The carbon brush (105) is installed on the inner wall of the machine body (101) and the carbon brush (105) is in frictional contact with the conductive ring (104). Multiple grinding mechanisms are set on the cylinder (102) for polishing the bent pipe. The conductive ring (104) is electrically connected to the multiple grinding mechanisms. A drive device is set on the machine body (101) for driving the cylinder (102) to rotate. A conveying device is set on the side of the machine body (101) for automatically conveying the bent pipe.
2. The fully automatic pipe bending polishing machine as described in claim 1, characterized in that, The polishing mechanism includes a traction device, a base (201), a support arm (202), a polishing wheel (203), a tension spring (204), a first motor (205), a first pulley (206), and a first belt (207). The base (201) is mounted on the inner wall of the cylinder (102). The end of the support arm (202) is rotatably mounted on the base (201). The polishing wheel (203) is rotatably mounted on the other end of the support arm (202). One end of the tension spring (204) is connected to the inner wall of the cylinder (102), and the other end of the tension spring (204) is connected to the outer wall of the support arm (202). The first motor (205) is installed on the inner wall of the cylinder (102). The first motor (205) is electrically connected to the conductive ring (104). The first set of first pulleys (206) is installed on the output end of the first motor (205). The second set of first pulleys (206) is connected to the rotating end of the support arm (202). The third set of first pulleys (206) is installed on the rotating end of the polishing wheel (203). The three sets of first pulleys (206) are connected by a first belt (207) for transmission. The traction device is set on the cylinder (102) and is used to traction and swing the support arm (202).
3. The fully automatic pipe bending polishing machine as described in claim 1, characterized in that, The conveying device includes two sets of supports (301), two sets of arc-shaped brackets (302), an arc-shaped housing (303), two sets of sprockets (304), a chain (305), multiple sets of push rollers (306), multiple sets of first guide rollers (307), multiple sets of second guide rollers (308), and a second motor (309). The two sets of supports (301) are respectively set on both sides of the cylinder (102), the two sets of arc-shaped brackets (302) are respectively installed on the top of the two sets of supports (301), and the arc-shaped housing (303) is installed on the outer wall of one of the arc-shaped brackets (302). An opening is provided on the inner arc surface of the arc-shaped housing (303). The two sets of sprockets (304) are connected to the conveying device. 04) All are rotatably mounted on the inner wall of the arc-shaped housing (303). The chain (305) is fitted on two sets of sprockets (304). Multiple sets of push rollers (306) are respectively mounted on the outer wall of the chain (305). The push rollers (306) extend outward through the opening of the arc-shaped housing (303). Multiple sets of first guide rollers (307) are respectively rotatably mounted on the upper and lower sides of the chain (305). Multiple sets of second guide rollers (308) are rotatably mounted on the inner wall of the arc-shaped housing (303). The second motor (309) is mounted on the outer wall of the arc-shaped housing (303). The output end of the second motor (309) is connected to one of the sets of sprockets (304).
4. The fully automatic pipe bending polishing machine as described in claim 2, characterized in that, The traction device includes multiple sets of winding wheels (401), multiple sets of traction ropes (402), and multiple sets of third motors (403). The multiple sets of winding wheels (401) are rotatably mounted on the inner wall of the cylinder (102). The multiple sets of traction ropes (402) are respectively connected between the multiple sets of winding wheels (401) and the multiple sets of support arms (202). The multiple sets of third motors (403) are all mounted on the inner wall of the cylinder (102) and electrically connected to the conductive ring (104). The output ends of the multiple sets of third motors (403) are respectively connected to the multiple sets of winding wheels (401).
5. The fully automatic pipe bending polishing machine as described in claim 1, characterized in that, The drive device includes a rotating shaft (501), a drive wheel (502), a fourth motor (503), two sets of second pulleys (504) and a second belt (505). The rotating shaft (501) is rotatably mounted on the machine body (101). The drive wheel (502) is mounted on the outer wall of the rotating shaft (501) and is in contact with the circular track (103). The fourth motor (503) is mounted on the outer wall of the machine body (101). The two sets of second pulleys (504) are respectively mounted on the end of the rotating shaft (501) and the output end of the fourth motor (503). The two sets of second pulleys (504) are driven by the second belt (505).
6. The fully automatic pipe bending polishing machine as described in claim 1, characterized in that, It also includes multiple sets of protective covers (601), which are respectively installed on multiple sets of grinding mechanisms.
7. The fully automatic pipe bending polishing machine as described in claim 2, characterized in that, The multiple polishing wheels (203) are detachable.
8. The fully automatic pipe bending polishing machine as described in claim 2, characterized in that, The grinding mechanism, conveying device, traction device, and drive device are all controlled and adjusted by a controller, wireless receiver, and remote control.