Automatic polishing equipment for transformer cooling pipe and working method of automatic polishing equipment

Abstract

The invention discloses automatic polishing equipment for a transformer cooling pipe and a working method thereof.The automatic polishing equipment for the transformer cooling pipe comprises a machine base, a feeding device, a conveying device, a rotating mechanism, a polishing device, a pipe limiting base and a control module; the feeding device is used for conveying the pipes to the polishing machine; the polishing device is used for polishing the pipe; the pipe limiting seat is used for supporting the pipe conveyed out of the feeding device and limiting the pipe to be separated from the pipe limiting seat; the rotating mechanism drives the pipe on the pipe limiting seat to rotate, so that the polishing wheel of the polishing machine can polish the periphery of the pipe; the feeding driving assembly, the feeding driving assembly, the polishing machine and the rotating driving motor are all electrically connected with the control module. Compared with the prior art, automatic feeding can be achieved, pipes can be polished, manual participation can be reduced, the labor cost is greatly reduced, and the polishing efficiency and quality can also be improved.

Description

Technical Field

[0001] This invention relates to the field of transformer cooling tube processing technology, and in particular to an automatic polishing device for transformer cooling tubes and its working method. Background Technology

[0002] In the field of transformer cooling systems, cooling pipes, as core heat dissipation components, are mainly used for heat conduction and medium flow in oil-immersed or water-cooled transformers. Their materials are typically steel, copper, or stainless steel to ensure efficient heat dissipation, corrosion resistance, and long-term stability. With the development of power equipment towards larger capacity and higher reliability, the requirements for the precision of the outer surface treatment of cooling pipes are increasing. Especially for stainless steel or metal cooling pipes, outer surface polishing has become an important means to optimize surface finish, reduce corrosion risk, and improve appearance quality. Particularly in highly corrosive environments (such as offshore transformers), a smooth outer surface can prevent scale buildup and improve overall durability. In existing technologies, the outer surface polishing of cooling pipes mostly relies on manual or semi-automatic methods, such as using a polishing wheel driven by a rotary motor to polish the outer surface of the metal pipe. However, manual or semi-automatic polishing is susceptible to human factors, resulting in surface roughness deviations and uneven quality, and is also inefficient. Summary of the Invention

[0003] The primary objective of this invention is to provide an automatic polishing device for transformer cooling pipes, which automatically polishes the surface of the pipes, reducing manual intervention, saving labor costs, and improving efficiency.

[0004] Another objective of this invention is to provide a method for operating an automatic polishing device for transformer cooling pipes.

[0005] To address the aforementioned technical problems, the present invention provides the following technical solution: An automatic polishing device for transformer cooling tubes includes a base, a feeding device, a conveying device, a rotating mechanism, a polishing device, a tube limiting seat, and a control module. The feeding device and the conveying device are both mounted on the base, with the feeding device adjacent to the conveying start end of the conveying device and the polishing device adjacent to the base and located at the conveying end end of the conveying device. The feeding device is used to transport pipes to the feeding device. The feeding device includes a feeding box, a feeding drive assembly, and a guide plate, all fixed on the machine base. The feeding box is used to store pipes and is located on one side adjacent to the feeding start end of the feeding device. The guide plate is located between the feeding box and the feeding device, and at least two guide plates are spaced apart along the feeding direction of the feeding device. The top side of the guide plate gradually slopes downward from the end near the feeding box to the end away from the feeding box, and the end of the top side of the guide plate away from the feeding box is adjacent to the feeding device. The feeding drive assembly is used to transport the pipes in the feeding box one by one to the top side of the guide plate. The feeding device includes feeding wheels, conveyor bars, and a feeding drive assembly, all mounted on the machine base. Two feeding wheels are provided and spaced apart along the conveying direction of the pipe. The conveyor bar has a circular cross-section and is wound between the two feeding wheels. Two conveyor bars are provided and spaced apart along the axial direction of the feeding wheels. A feeding space supporting the pipe is formed between the upper sides of the two conveyor bars. The end of the guide plate away from the loading box is close to the feeding space. The feeding drive assembly is used to drive one of the feeding wheels to rotate. The polishing device includes a polishing machine and polishing wheels. There are two polishing machines, and the polishing wheels are provided on both sides of the two polishing machines facing each other. A polishing passage for the pipe to pass through is formed between the two polishing wheels. The pipe limiting seat is fixed on the machine base and located between the polishing machine and the feeding device. The upper part of the pipe limiting seat is provided with a pipe limiting groove for the pipe to pass through, so as to support the pipe that is delivered out of the feeding device and restrict the pipe from leaving the pipe limiting seat. The rotating mechanism includes a connecting support, a rotating pressure roller, and a rotating drive motor. Two connecting supports are provided, each fixed to one of the two polishing machines, and each adjacent to one of the two sides of the pipe limiting seat. The rotating pressure roller is rotatably connected between the two connecting supports and located above the pipe limiting seat. The rotating drive motor is fixed to one of the connecting supports, and its output shaft is coaxially fixed with the rotating pressure roller. The outer circumference of the rotating pressure roller is provided with multiple raised strips, which are spirally arranged around the outer circumference of the rotating pressure roller. When the rotating drive motor drives the rotating pressure roller to rotate, the raised strips can cause the pipe on the pipe limiting seat to rotate, thereby allowing the polishing wheel of the polishing machine to polish the outer circumference of the pipe. The feeding drive assembly, the polishing machine, and the rotary drive motor are all electrically connected to the control module.

[0006] Preferably, the connecting support includes a horizontal plate and a vertical plate, the horizontal plate is fixed on the polishing machine, the vertical plate is fixed on the horizontal plate, a first reinforcing rib is connected between the vertical plate and the horizontal plate, the rotating pressure roller is disposed between the two vertical plates, and the rotating drive motor is fixed on the vertical plate of one of the connecting supports.

[0007] Preferably, a mounting plate is fixed to the side of one of the vertical plates on which the rotary drive motor is installed, away from the other vertical plate, and the rotary drive motor is fixed to the mounting plate.

[0008] Preferably, a second reinforcing rib is connected between the mounting plate and the vertical plate on one of the connecting supports on which the rotary drive motor is installed.

[0009] Preferably, the feeding box has a feeding opening on the side near the feeding device, and feeding baffles are provided on both sides of the feeding opening. The bottom plate of the feeding box gradually slopes downward from the end away from the feeding device to the end near the feeding device. A feeding clearance opening is provided on the side of the bottom plate near the feeding device, corresponding to the feeding opening. The feeding drive assembly includes a feeding cylinder, a feeding lifting frame, and feeding ramps. At least two feeding ramps are provided, and at least two feeding ramps are located between at least two guiding ramps. The feeding ramps are mounted on the feeding lifting frame. The feeding ramp is gradually inclined downwards from the end away from the feeding device to the end closer to the feeding device. A feeding stop bar is provided on the top side of the feeding ramp and at the end closer to the feeding device. The feeding cylinder is fixed on the machine base, and the feeding lifting frame is fixed to the output shaft of the feeding cylinder. The feeding cylinder is used to drive the feeding ramp to rise and fall vertically. When the feeding ramp rises, it drives the pipe that has moved to the feeding clearance opening to rise above the guiding ramp. When the feeding ramp falls, it allows the pipe to fall onto the guiding ramp. The feeding cylinder is electrically connected to the control module.

[0010] Preferably, the feeding stop bar gradually tilts away from the feeding device from the bottom to the top, and the feeding stop bar is made of elastic plastic material.

[0011] Preferably, the feeding device further includes a size adjustment mechanism, which includes a size adjustment plate and a guide shaft. The guide shaft is located inside the feeding box and on the side away from the feeding device. The guide shaft is parallel to the pipe conveying direction. The size adjustment plate is located inside the feeding box and connected to the guide shaft. The size adjustment plate can move along the guide shaft to adjust the size of the feeding box along the pipe conveying direction, so that the position of the size adjustment plate can be adjusted according to the length of the pipe.

[0012] Preferably, the feeding device further includes a feeding limiting seat fixed on the machine base, the feeding limiting seat having a feeding limiting groove, the feeding limiting seat being disposed between the two feeding wheels, the feeding limiting seat being located below the two conveyor bars between the upper sides of the two feeding wheels, and the two conveyor bars entering the feeding limiting groove of the feeding limiting seat.

[0013] Preferably, the device further includes a pushing device and a return box. The pushing device includes a pushing bracket, an extension bracket, a pushing horizontal plate, a blocking horizontal plate, an identification sensor, and a pushing drive assembly. The pushing bracket is mounted on the base and located between the loading box and the feeding device. The pushing bracket extends along the pipe conveying direction. Extension brackets extend from the upper parts of both ends of the pushing bracket towards the feeding device. The two extension brackets extend above the two conveyor bars and are adjacent to the two feeding wheels. The lower part of the extension bracket extends from the loading box to the feeding device. The pusher horizontal plate and the stop horizontal plate are arranged sequentially at intervals in the direction of placement. The identification sensor is provided on one of the extension brackets near the polishing machine. The identification sensor is used to identify the tubes on the conveyor bar. The identification sensor is electrically connected to the control module. The return box is provided on the machine base and located on the side of the feeding device away from the loading box. The pusher drive assembly is electrically connected to the control module and is used to drive the pusher bracket to move in a direction perpendicular to the tube conveying direction, so as to push the tubes on the conveyor bar into the return box.

[0014] This invention also relates to a method for operating an automatic polishing device for transformer cooling tubes, comprising the following steps: The feeding drive assembly transports the pipes in the feeding box one by one to the guide ramp; The guide sloping plate guides the tube on it between the upper parts of the two conveyor bars of the feeding device; The feeding drive assembly of the feeding device drives one of its feeding wheels to rotate, thereby driving the two conveyor bars to transport the pipe to the pipe limiting seat. The rotating pressure roller is pressed on the upper part of the tube located on the tube limit seat. The rotating drive motor drives the rotating pressure roller to rotate, so that the tube rotates by the convex strips on the outer periphery of the rotating pressure roller and continues to move towards the polishing machine. The pipe is passed between the two polishing wheels of the two polishing machines, and the two polishing wheels polish and grind the surface of the pipe.

[0015] Compared with the prior art, the automatic polishing equipment for transformer cooling pipes according to an embodiment of the present invention has the following advantages: In this invention, the feeding drive assembly is used to remove the pipes one by one from the feeding box and place them on the guide ramps. At least two guide ramps can stably support the pipes. Because the top of the guide ramps is inclined, the pipes can fall along the guide ramps into the feeding space formed between the upper parts of the two conveyor bars of the feeding device. Then, the feeding drive assembly can drive the feeding wheel to rotate, thereby driving the two conveyor bars to drive the pipes into the pipe limiting groove of the pipe limiting seat. The rotating pressure roller is made of rubber material, and the upper part of the pipe extends out of the pipe limiting groove. Outside the groove, after the pipe enters below the rotating pressure roller, the convex strip can drive the pipe to rotate within the pipe limiting groove under the rotation of the rotating pressure roller. At the same time, it can also drive the pipe to continue moving towards the polishing machine without interfering with the conveyor strip. Then, the pipe rotates and enters between the two polishing wheels, which can polish the outer circumference of the pipe in all directions, realizing the automatic polishing process of the pipe. Therefore, compared with the prior art, this application can automatically feed and polish the pipe, reduce manual intervention, greatly reduce labor costs, and improve polishing efficiency and quality. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the polishing device and rotating mechanism according to an embodiment of the present invention; Figure 3 This is a schematic diagram from one perspective of the feeding device and the material conveying device according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the feeding device and conveying device from another perspective in an embodiment of the present invention; Figure 5 This is a schematic diagram from one perspective of the feeding drive assembly and feeding device according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the feeding drive assembly and feeding device from another perspective according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the feeding device according to an embodiment of the present invention.

[0017] In the diagram, 1. Base; 2. Feeding device; 21. Feeding box; 211. Feeding opening; 212. Feeding baffle; 213. Feeding clearance opening; 22. Feeding drive assembly; 221. Feeding cylinder; 222. Feeding lifting frame; 223. Feeding ramp; 224. Feeding stop bar; 23. Guide ramp; 24. Size adjustment mechanism; 241. Size adjustment plate; 242. Guide shaft; 3. Feeding device; 31. Feeding wheel; 32. Conveyor bar; 33. Feeding drive assembly; 34. Feeding limit seat; 4. Rotation mechanism; 41. Connecting support; 411. 412. Horizontal plate; 413. Vertical plate; 414. First reinforcing rib; 415. Mounting plate; 416. Second reinforcing rib; 42. Rotary pressure roller; 43. Rotary drive motor; 44. Raised strip; 5. Polishing device; 51. Polishing machine; 52. Polishing wheel; 6. Pipe limiting seat; 7. Pushing device; 71. Pushing bracket; 72. Extension bracket; 73. Pushing horizontal plate; 74. Stopping horizontal plate; 75. Identification sensor; 76. Pushing drive assembly; 761. Pushing guide shaft; 762. Pushing guide slider; 763. Pushing cylinder; 8. Return box. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] In the description of this invention, it should be understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, parts, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts, components, and / or groups thereof. It should be understood that when we say a part is "connected" to another part, it can be directly connected to the other part, or there may be intermediate parts. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0020] like Figures 1 to 7 As shown, the present invention relates to an automatic polishing equipment for transformer cooling pipes, which is used to automatically polish cooling pipes with a circular cross-section, so as to reduce labor costs and improve efficiency.

[0021] The automatic polishing equipment for transformer cooling pipes includes a base 1, a feeding device 2, a feeding device 3, a rotating mechanism 4, a polishing device 5, a pipe limiting seat 6, and a control module. The feeding device 2 and the feeding device 3 are both located on the base 1, and the feeding device 2 is adjacent to the conveying start end of the feeding device 3. The polishing device 5 is adjacent to the base 1 and located at the conveying end of the feeding device 3. The feeding device 2 is used to transport pipes to the feeding device 3. The feeding device 2 includes a feeding box 21, a feeding drive assembly 22, and a guide plate 23, all fixed on the machine base 1. The feeding box 21 is used to store pipes and is located on one side adjacent to the conveying start end of the feeding device 3. The guide plate 23 is located between the feeding box 21 and the feeding device 3, and at least two guide plates 23 are spaced apart along the conveying direction of the feeding device 3. The top side of the guide plate 23 is gradually inclined downward from the end near the feeding box 21 to the end away from the feeding box 21, and the end of the top side of the guide plate 23 away from the feeding box 21 is adjacent to the feeding device 3. The feeding drive assembly 22 is used to transport the pipes in the feeding box 21 one by one to the top side of the guide plate 23. The feeding device 3 includes feeding wheels 31, conveying bars 32, and a feeding drive assembly 33, all mounted on the machine base 1. Two feeding wheels 31 are provided and spaced apart along the conveying direction of the pipe. The conveying bars 32 are made of rubber and have a circular cross-section. The conveying bars 32 are wound between the two feeding wheels 31. Two conveying bars 32 are provided and spaced apart along the axial direction of the feeding wheels 31. A feeding space supporting the pipe is formed between the upper sides of the two conveying bars 32. The end of the guide plate 23 away from the loading box 21 is close to the feeding space. The feeding drive assembly 33 is used to drive one of the feeding wheels 31 to rotate. The polishing device 5 includes a polishing machine 51 and polishing wheels 52. There are two polishing machines 51, and the polishing wheels 52 are provided on both sides of the two polishing machines 51 facing each other. A polishing passage for the pipe to pass through is formed between the two polishing wheels 52. The pipe limiting seat 6 is fixed on the machine base 1 and located between the polishing machine 51 and the feeding device 3. The upper part of the pipe limiting seat 6 is provided with a pipe limiting groove for the pipe to pass through, so as to support the pipe that is delivered out of the feeding device 3 and restrict the pipe from leaving the pipe limiting seat 6. The rotating mechanism 4 includes a connecting support 41, a rotating pressure roller 42, and a rotating drive motor 43. Two connecting supports 41 are provided, each fixed to one of the two polishing machines 51, and each adjacent to one side of the pipe limiting seat 6. The rotating pressure roller 42 is rotatably connected between the two connecting supports 41 and located above the pipe limiting seat 6. The rotating drive motor 43 is fixed to one of the connecting supports 41, and its output shaft is coaxially fixed with the rotating pressure roller 42. The outer circumference of the rotating pressure roller 42 is provided with multiple raised strips 44, which are spirally arranged around the outer circumference of the rotating pressure roller 42. When the rotating drive motor 43 drives the rotating pressure roller 42 to rotate, the raised strips 44 can drive the pipe on the pipe limiting seat 6 to rotate, thereby allowing the polishing wheel 52 of the polishing machine 51 to polish the outer circumference of the pipe. The feeding drive assembly 22, the feeding drive assembly 33, the polishing machine 51, and the rotary drive motor 43 are all electrically connected to the control module.

[0022] In this invention, the feeding drive assembly 22 is used to remove the pipes one by one from the feeding box 21 and place them on the guide ramp 23. At least two guide ramps 23 can stably support the pipes. Since the top side of the guide ramp 23 is inclined, the pipes can fall along the guide ramp 23 onto the feeding space formed between the upper parts of the two conveyor bars 32 of the feeding device 3. Then, the feeding drive assembly 33 can drive the feeding wheel 31 to rotate, thereby driving the two conveyor bars 32 to drive the pipes into the pipe limiting groove of the pipe limiting seat 6. The rotating pressure roller 42 is made of rubber material, and the upper part of the pipe... Extending out of the pipe limiting groove, after the pipe enters below the rotating pressure roller 42, the convex strip 44 can drive the pipe to rotate within the pipe limiting groove under the rotation of the rotating pressure roller 42. At the same time, it can also drive the pipe to continue moving towards the polishing machine 51 without interfering with the conveyor strip 32. Then, the pipe rotates and enters between the two polishing wheels 52, which can polish the outer circumference of the pipe in all directions, realizing the automatic polishing process of the pipe. Therefore, compared with the prior art, this application can automatically feed and polish the pipe, reduce manual intervention, greatly reduce labor costs, and improve polishing efficiency and quality.

[0023] In this embodiment, the connecting support 41 includes a horizontal plate 411 and a vertical plate 412. The horizontal plate 411 is fixed on the polishing machine 51, and the vertical plate 412 is fixed on the horizontal plate 411. A first reinforcing rib 413 connects the vertical plate 412 and the horizontal plate 411. The two vertical plates 412 of the two connecting supports 41 are arranged facing each other. The rotating pressure roller 42 is disposed between the two vertical plates 412. The rotating drive motor 43 is fixed on the vertical plate 412 of one of the connecting supports 41.

[0024] By setting the first reinforcing rib 413, the stability of the connecting support 41 can be enhanced, so as to stably support the rotating pressure roller 42 and the rotating drive motor 43, and ensure that the pipe can be stably driven to rotate.

[0025] Preferably, a mounting plate 414 is fixed on the side of one of the vertical plates 412 on which the rotary drive motor 43 is mounted, away from the other vertical plate 412. The rotary drive motor 43 is fixed on the mounting plate 414, and a second reinforcing rib 415 is connected between the mounting plate 414 and the vertical plate 412 on one of the connecting supports 41 on which the rotary drive motor 43 is mounted, thereby ensuring that the mounting plate 414 can stably support the rotary drive motor 43.

[0026] In this embodiment, the feeding box 21 has a feeding opening 211 on the side near the feeding device 3, and feeding baffles 212 are provided on both sides of the feeding opening 211. The bottom plate of the feeding box 21 is gradually inclined downward from the end away from the feeding device 3 to the end near the feeding device 3. A feeding clearance opening 213 is provided on the side of the bottom plate near the feeding device 3 and corresponding to the feeding opening 211. The feeding drive assembly 22 includes a feeding cylinder 221, a feeding lifting frame 222, and a feeding inclined plate 223. At least two feeding inclined plates 223 are provided, and at least two feeding inclined plates 223 are located between at least two guiding inclined plates 23. The feeding inclined plates 223 are provided on the feeding lifting frame. On 222, the feeding inclined plate 223 is gradually inclined downward from the end away from the feeding device 3 to the end close to the feeding device 3. The top side of the feeding inclined plate 223 and the end close to the feeding device 3 are provided with a feeding stop bar 224. The feeding cylinder 221 is fixed on the machine base 1. The feeding lifting frame 222 is fixed to the output shaft of the feeding cylinder 221. The feeding cylinder 221 is used to drive the feeding inclined plate 223 to rise and fall in the vertical direction. When the feeding inclined plate 223 rises, it drives the pipe that has moved to the feeding clearance port 213 to rise above the guiding inclined plate 23. When the feeding inclined plate 223 falls, it allows the pipe to fall onto the guiding inclined plate 23. The feeding cylinder 221 is electrically connected to the control module.

[0027] Because the bottom plate of the feeding box 21 is inclined, the pipe inside the feeding box 21 can roll to the feeding clearance opening 213. Blocked by the feeding baffle 212, the pipe will not fall out of the feeding opening 211. Then, the feeding cylinder 221 drives the feeding ramp 223 to rise, thereby lifting the pipe at the feeding clearance opening 213. After the feeding ramp 223 rises above the feeding box 21, the pipe rolls down along the top side of the feeding ramp 223. The tube is brought to the feeding baffle 212, and then the feeding cylinder 221 drives the feeding inclined plate 223 to descend so that the tube falls onto the guiding inclined plate 23. After the tube separates from the feeding baffle 212, the tube falls completely onto the guiding inclined plate 23 and rolls along the guiding inclined plate 23 to the feeding device 3. The feeding cylinder 221 drives the feeding inclined plate 223 to move vertically, so that the tubes can be taken out one by one for subsequent polishing.

[0028] Preferably, the feeding stop bar 224 is gradually inclined away from the feeding device 3 from the lower end to the upper end, and the feeding stop bar 224 is made of elastic plastic material.

[0029] Since the feeding cylinder 221 can drive the pipe to move upward when it drives the feeding ramp 223 upward, the pipe will have upward inertia at the moment the feeding cylinder 221 stops driving the feeding ramp 223. As a result, the pipe will jump on the feeding ramp 223. Therefore, by tilting the feeding baffle 212, the upward jumping of the pipe can be stopped to prevent the pipe from jumping and falling or shifting its position, thus affecting normal feeding. At the same time, the feeding baffle 224 is made of elastic plastic material, which can also buffer the upward jumping of the pipe. Moreover, the feeding baffle 224 is tilted so that when the feeding cylinder 221 drives the feeding ramp 223 downward, the pipe can fall smoothly onto the guide ramp 23 along the feeding baffle 224, ensuring smooth feeding of the pipe.

[0030] Furthermore, the feeding device 2 also includes a size adjustment mechanism 24, which includes a size adjustment plate 241 and a guide shaft 242. The guide shaft 242 is located inside the feeding box 21 and on the side away from the feeding device 3. The guide shaft 242 is parallel to the pipe conveying direction. The size adjustment plate 241 is located inside the feeding box 21 and connected to the guide shaft 242. The size adjustment plate 241 can move along the guide shaft 242 to adjust the size of the feeding box 21 along the pipe conveying direction, so that the position of the size adjustment plate 241 can be adjusted according to the length of the pipe.

[0031] By adjusting the size adjustment plate 241 to adapt to the length of the pipe, the size adjustment plate 241 is brought close to the end of the pipe. That is, the two ends of the pipe are brought close to the size adjustment plate 241 and the side of the feeding box 21 facing the size adjustment plate 241, so that the pipe can roll smoothly to the feeding clearance opening 213, which helps to ensure that pipes of different sizes can be fed smoothly.

[0032] In this embodiment, the feeding device 3 further includes a feeding limiting seat 34 fixed on the machine base 1. The feeding limiting seat 34 has a feeding limiting groove. The feeding limiting seat 34 is located between the two feeding wheels 31. The feeding limiting seat 34 is located below the two conveyor bars 32 between the upper sides of the two feeding wheels 31, and the two conveyor bars 32 enter the feeding limiting groove of the feeding limiting seat 34.

[0033] With the feeding limit seat 34 in place, and the two conveying bars 32 correspondingly entering the feeding limit groove, the feeding limit seat 34 can support the conveying bars 32, and the feeding limit groove of the feeding limit seat 34 can limit the two conveying bars 32, thereby preventing the two conveying bars 32 from separating in a direction away from each other. Therefore, when the two conveying bars 32 support and convey the pipe, it can prevent the pipe from falling between the two conveying bars 32 due to its own weight, ensuring the smooth feeding of the pipe.

[0034] Preferably, multiple feeding limit seats 34 are provided, and the multiple feeding limit seats 34 are arranged at intervals along the pipe conveying direction, so that the multiple feeding limit seats 34 can support the conveyor bar 32 and further ensure the smooth feeding of the pipe.

[0035] In this embodiment, the automatic polishing equipment for transformer cooling tubes further includes a pushing device 7 and a return box 8. The pushing device 7 includes a pushing bracket 71, an extension bracket 72, a pushing horizontal plate 73, a blocking horizontal plate 74, an identification sensor 75, and a pushing drive assembly 76. The pushing bracket 71 is mounted on the base 1 and located between the loading box 21 and the feeding device 3. The pushing bracket 71 extends along the tube conveying direction. The upper parts of both ends of the pushing bracket 71 extend towards the feeding device 3 with extension brackets 72. The two extension brackets 72 extend above the two conveyor bars 32, and the two extension brackets 72 correspond one-to-one with the two adjacent feeding wheels 31. The lower part of the extension bracket 72... The pusher horizontal plate 73 and the stop horizontal plate 74 are arranged sequentially at intervals from the loading box 21 to the feeding device 3. The identification sensor 75 is provided on an extension bracket 72 near the polishing machine 51. The identification sensor 75 is used to identify the pipe on the conveyor bar 32. The identification sensor 75 is electrically connected to the control module. The return box 8 is located on the machine base 1 and on the side of the feeding device 3 away from the loading box 21. The pusher drive assembly 76 is electrically connected to the control module and is used to drive the pusher bracket 71 to move in a direction perpendicular to the pipe conveying direction, so as to push the pipe on the conveyor bar 32 into the return box 8.

[0036] During pipe polishing, the baffle plate 74 is positioned close to the upper part of the two conveyor bars 32 on the side away from the loading box 21. This serves to stop the pipe from rolling off the guide plate 23 onto the two conveyor bars 32 due to excessive inertia, preventing it from rolling off the side away from the loading box 21. The two conveyor bars 32 then transport the pipe to the polishing machine 51 for surface polishing. During this process, the pipe can pass through the identification sensor 75. When the pipe has traveled and polished a certain size, and the identification sensor 75 can no longer detect the pipe, it sends a signal to the control module. The control module then controls the feeding drive assembly 33 to drive the feeding wheel 31. The rotation is reversed to transport the pipe away from the polishing machine 51. At the same time, the rotary drive motor 43 drives the rotary pressure roller 42 to reverse. After the pipe reaches the pipe conveying start point, the push drive assembly 76 drives the push support 71 to move towards the feeding device 3, so as to drive the push horizontal plate 73 to push the pipe between the upper parts of the two conveyor bars 32 into the return box 8 for automatic collection of the semi-polished pipe. After the unpolished pipes in the loading box 21 are all in a semi-polished state and fall into the return box 8, the user can put the semi-polished pipes back into the loading box 21 in the opposite direction to repeat the above polishing work and polish the remaining part of the semi-polished pipe, thereby completing the overall polishing work of the pipe.

[0037] Preferably, the pusher drive assembly 76 includes a pusher guide shaft 761, a pusher guide slider 762, and a pusher cylinder 763. The pusher guide shaft 761 is provided on the base 1 along the pipe conveying direction, and the pusher guide shaft 761 extends perpendicular to the pipe conveying direction. A plurality of pusher guide sliders 762 are slidably connected to the plurality of pusher guide shafts 761 one by one. The pusher bracket 71 is fixed on the plurality of pusher guide sliders 762 to guide the pusher bracket 71. The pusher cylinder 763 is fixed on the base 1, and the output end of the pusher cylinder 763 is fixedly connected to the pusher bracket 71 to drive the pusher bracket 71 to move in a direction perpendicular to the pipe conveying direction.

[0038] The present invention also relates to a method for operating the automatic polishing equipment for transformer cooling tubes, comprising the following steps: The feeding drive assembly 22 conveys the pipes in the feeding box 21 one by one to the guide plate 23; The guide plate 23 guides the pipe on it to the upper part between the two conveyor bars 32 of the feeding device 3; The feeding drive assembly 33 of the feeding device 3 drives one of its feeding wheels 31 to rotate, thereby driving the two conveyor bars 32 to transport the pipe to the pipe limiting seat 6. The rotating pressure roller 42 presses on the upper part of the tube located on the tube limit seat 6. The rotating drive motor 43 drives the rotating pressure roller 42 to rotate, so that the tube rotates through the raised strips 44 on the outer periphery of the rotating pressure roller 42 and continues to move toward the polishing machine 51. The pipe is passed between the two polishing wheels 52 of the two polishing machines 51, and the two polishing wheels 52 polish and grind the surface of the pipe.

[0039] Specifically, the feeding cylinder 221 drives the feeding ramp 223 to move upward, thereby passing through the feeding clearance opening 213 to lift a pipe. After the feeding ramp 223 moves upward above the guide ramp 23, the feeding cylinder 221 drives the feeding ramp 223 to descend, allowing the pipe to fall onto the guide ramp 23. Then, the pipe rolls down along the guide ramp 23 between the upper parts of the two conveyor bars 32. Then, the feeding drive assembly 33 drives the feeding wheel 31 to rotate, thereby driving the two conveyor bars 32 to move the pipe towards the polishing machine 51. After the pipe enters the pipe limiting groove of the pipe limiting seat 6 and moves below the rotating pressure roller 42, the rotating pressure roller 42 can drive the pipe to rotate without affecting the pipe's continued movement towards the polishing machine 51. Thus, the pipe rotates and is polished by the polishing machine 51. After the polishing wheel 52, the outer circumference of the pipe can be polished evenly. After the identification sensor 75 fails to identify the pipe, the feeding drive assembly 33 drives the feeding wheel 31 to reverse, so as to move the remaining pipe away from the polishing machine 51. After the pipe moves to the pipe conveying start end of the feeding device 3, the pushing cylinder 763 drives the pushing bracket 71 to move towards the feeding device 3, so as to drive the pushing horizontal plate 73 to push the pipe between the upper parts of the two conveying bars 32 into the return box 8, so as to automatically collect the semi-polished pipe. After the unpolished pipes in the loading box 21 are all in a semi-polished state and fall into the return box 8, the user can put the semi-polished pipes back into the loading box 21 in the opposite direction to repeat the above polishing work, polish the remaining part of the semi-polished pipe, and thus complete the overall polishing work of the pipe.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An automatic polishing device for transformer cooling pipes, characterized in that, The device includes a base (1), a feeding device (2), a feeding device (3), a rotating mechanism (4), a polishing device (5), a pipe limiting seat (6), and a control module. The feeding device (2) and the feeding device (3) are both located on the base (1), and the feeding device (2) is adjacent to the beginning of the feeding device (3). The polishing device (5) is adjacent to the base (1) and located at the end of the feeding device (3). The feeding device (2) is used to transport the pipe to the feeding device (3). The feeding device (2) includes a feeding box (21), a feeding drive assembly (22), and a guide plate (23), all fixed on the machine base (1). The feeding box (21) is used to store the pipe, and the feeding box (21) is adjacent to the feeding start end of the feeding device (3). The guide plate (23) is located between the feeding box (21) and the feeding device (3), and the guide plate (23) is used to transport the pipe to the feeding device (3). At least two inclined plates (23) are provided at intervals along the conveying direction of the feeding device (3). The top side of the guiding inclined plate (23) is gradually inclined downward from the end near the feeding box (21) to the end away from the feeding box (21). The top side of the guiding inclined plate (23) away from the feeding box (21) is adjacent to the feeding device (3). The feeding drive assembly (22) is used to convey the pipes in the feeding box (21) one by one to the top side of the guiding inclined plate (23). The feeding device (3) includes feeding wheels (31), conveyor bars (32) and feeding drive assembly (33) all mounted on the base (1). There are two feeding wheels (31), and the two feeding wheels (31) are spaced apart along the conveying direction of the pipe. The cross-section of the conveyor bar (32) is circular. The conveyor bar (32) is wound between the two feeding wheels (31). There are two conveyor bars (32), and the two conveyor bars (32) are spaced apart along the axial direction of the feeding wheels (31). A feeding space for supporting the pipe is formed between the upper sides of the two conveyor bars (32). The end of the guide plate (23) away from the loading box (21) is close to the feeding space. The feeding drive assembly (33) is used to drive one of the feeding wheels (31) to rotate. The polishing device (5) includes a polishing machine (51) and polishing wheels (52). There are two polishing machines (51), and the polishing wheels (52) are provided on both sides of the two polishing machines (51) facing each other. A polishing passage for the pipe to pass through is formed between the two polishing wheels (52). The pipe limiting seat (6) is fixed on the machine base (1) and located between the polishing machine (51) and the feeding device (3). The upper part of the pipe limiting seat (6) is provided with a pipe limiting groove for the pipe to pass through, so as to support the pipe that is transported out of the feeding device (3) and restrict the pipe from leaving the pipe limiting seat (6). The rotating mechanism (4) includes a connecting support (41), a rotating pressure roller (42), and a rotating drive motor (43). Two connecting supports (41) are provided, each fixed to one of the two polishing machines (51), and each connected support (41) is adjacent to one side of the pipe limiting seat (6). The rotating pressure roller (42) is rotatably connected between the two connecting supports (41) and located above the pipe limiting seat (6). The rotating drive motor (43) is fixed to one of the connecting supports (51). The rotating roller (42) is fixed coaxially with the output shaft of the rotary drive motor (43) on the connecting support (41). The outer circumference of the rotary roller (42) is provided with a plurality of raised strips (44). The raised strips (44) are spirally wrapped around the outer circumference of the rotary roller (42). When the rotary drive motor (43) drives the rotary roller (42) to rotate, the raised strips (44) can drive the pipe on the pipe limiting seat (6) to rotate, so that the polishing wheel (52) of the polishing machine (51) can polish the outer circumference of the pipe. The feeding drive assembly (22), the feeding drive assembly (33), the polishing machine (51), and the rotary drive motor (43) are all electrically connected to the control module.

2. The automatic polishing equipment for transformer cooling pipes according to claim 1, characterized in that, The connecting support (41) includes a horizontal plate (411) and a vertical plate (412). The horizontal plate (411) is fixed on the polishing machine (51), and the vertical plate (412) is fixed on the horizontal plate (411). A first reinforcing rib (413) is connected between the vertical plate (412) and the horizontal plate (411). The rotating pressure roller (42) is located between the two vertical plates (412), and the rotating drive motor (43) is fixed on the vertical plate (412) of one of the connecting supports (41).

3. The automatic polishing equipment for transformer cooling pipes according to claim 2, characterized in that, A mounting plate (414) is fixed to one of the vertical plates (412) on which the rotary drive motor (43) is mounted, away from the other vertical plate (412), and the rotary drive motor (43) is fixed to the mounting plate (414).

4. The automatic polishing equipment for transformer cooling pipes according to claim 3, characterized in that, A second reinforcing rib (415) is connected between the mounting plate (414) and the vertical plate (412) on one of the connecting supports (41) on which the rotary drive motor (43) is mounted.

5. The automatic polishing equipment for transformer cooling pipes according to claim 1, characterized in that, The feeding box (21) has a feeding opening (211) on the side near the feeding device (3), and feeding baffles (212) are provided on both sides of the feeding opening (211) of the feeding box (21). The bottom plate of the feeding box (21) is gradually inclined downward from the end away from the feeding device (3) to the end near the feeding device (3). A feeding clearance opening (213) is provided on the side of the bottom plate near the feeding device (3) and corresponding to the feeding opening (211). The feeding drive assembly (22) includes a feeding cylinder (221), a feeding lifting frame (222), and a feeding inclined plate (223). There are at least two feeding inclined plates (223), and at least two feeding inclined plates (223) are located between at least two guiding inclined plates (23). The feeding inclined plate (223) is provided on the feeding lifting frame (211). 22) The feeding ramp (223) is gradually inclined downwards from the end away from the feeding device (3) to the end close to the feeding device (3). A feeding stop bar (224) is provided on the top side of the feeding ramp (223) and at the end close to the feeding device (3). The feeding cylinder (221) is fixed on the machine base (1). The feeding lifting frame (222) is fixed to the feed cylinder (221). The feeding cylinder (221) is used to drive the feeding inclined plate (223) to rise and fall in the vertical direction. When the feeding inclined plate (223) rises, it drives the pipe that has moved to the feeding clearance port (213) to rise above the guiding inclined plate (23). When the feeding inclined plate (223) falls, it allows the pipe to fall onto the guiding inclined plate (23). The feeding cylinder (221) is electrically connected to the control module.

6. The automatic polishing equipment for transformer cooling pipes according to claim 5, characterized in that, The feeding stop (224) gradually tilts away from the feeding device (3) from the bottom to the top, and the feeding stop (224) is made of elastic plastic material.

7. The automatic polishing equipment for transformer cooling pipes according to claim 5, characterized in that, The feeding device (2) further includes a size adjustment mechanism (24), which includes a size adjustment plate (241) and a guide shaft (242). The guide shaft (242) is located inside the feeding box (21) and on the side away from the feeding device (3). The guide shaft (242) is parallel to the pipe conveying direction. The size adjustment plate (241) is located inside the feeding box (21) and connected to the guide shaft (242). The size adjustment plate (241) can move along the guide shaft (242) to adjust the size of the feeding box (21) along the pipe conveying direction, so that the position of the size adjustment plate (241) can be adjusted according to the length of the pipe.

8. The automatic polishing equipment for transformer cooling pipes according to claim 1, characterized in that, The feeding device (3) further includes a feeding limit seat (34) fixed on the machine base (1). The feeding limit seat (34) has a feeding limit groove. The feeding limit seat (34) is located between the two feeding wheels (31). The feeding limit seat (34) is located below the two conveyor bars (32) between the upper sides of the two feeding wheels (31), and the two conveyor bars (32) enter the feeding limit groove of the feeding limit seat (34).

9. The automatic polishing equipment for transformer cooling pipes according to claim 1, characterized in that, It also includes a pushing device (7) and a return box (8). The pushing device (7) includes a pushing bracket (71), an extension bracket (72), a pushing horizontal plate (73), a blocking horizontal plate (74), an identification sensor (75), and a pushing drive assembly (76). The pushing bracket (71) is mounted on the machine base (1) and located between the loading box (21) and the feeding device (3). The pushing bracket (71) extends along the pipe conveying direction. The upper parts of both ends of the pushing bracket (71) extend towards the feeding device (3) with extension brackets (72). The two extension brackets (72) extend above the two conveyor bars (32), and the two extension brackets (72) are adjacent to the two feeding wheels (31). The lower part of the extension bracket (72) extends from the loading box (21) to the top of the machine base (1). 1) The pusher horizontal plate (73) and the baffle horizontal plate (74) are arranged sequentially at intervals in the direction of the feeding device (3). The identification sensor (75) is provided on an extension bracket (72) near the polishing machine (51). The identification sensor (75) is used to identify the pipe on the conveyor bar (32). The identification sensor (75) is electrically connected to the control module. The return box (8) is located on the machine base (1) and on the side of the feeding device (3) away from the loading box (21). The pusher drive assembly (76) is electrically connected to the control module. The pusher drive assembly (76) is used to drive the pusher bracket (71) to move in a direction perpendicular to the pipe conveying direction, so as to push the pipe on the conveyor bar (32) into the return box (8).

10. A method for operating an automatic polishing device for transformer cooling tubes as described in any one of claims 1-9, characterized in that, Includes the following steps: The feeding drive assembly (22) transports the pipes in the feeding box (21) one by one to the guide sloping plate (23); The guide sloping plate (23) guides the tube on it to the upper part between the two conveyor bars (32) of the feeding device (3); The feeding drive assembly (33) of the feeding device (3) drives one of its feeding wheels (31) to rotate, thereby driving the two conveyor bars (32) to transmit the pipe to the pipe limiting seat (6). The rotating pressure roller (42) presses on the upper part of the tube located on the tube limit seat (6). The rotating drive motor (43) drives the rotating pressure roller (42) to rotate, so that the tube rotates and continues to move toward the polishing machine (51) through the raised strips (44) on the outer periphery of the rotating pressure roller (42). The pipe is inserted between the two polishing wheels (52) of the two polishing machines (51), and the two polishing wheels (52) polish the surface of the pipe.

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