Surface dirt cleaning device and method for multi-station pipe bending machine

Abstract

The invention discloses a surface dirt cleaning device and method for a multi-station pipe bending machine, and belongs to the technical field of pipe bending machine cleaning. Comprising a pipe bending machine, a feeding supporting plate is fixedly arranged on the pipe bending machine, a plurality of bearing seats are fixedly arranged on the surface of the feeding supporting plate, bearings are installed on the bearing seats, conveying wheels are installed on the outer sides of the bearings, bearing end covers used for blocking the bearings are arranged on the sides, away from the bearing seats, of the conveying wheels, and gaps exist between the conveying wheels and the bearing seats. And a cleaning device is arranged on the feeding support plate. Rust of the conveying wheel and the bearing seat caused by excessive accumulation of water between the conveying wheel and the bearing seat can be avoided, and the protection effect on the conveying wheel and the bearing in the cleaning process is improved.

Description

Technical Field

[0001] This invention relates to a surface dirt cleaning device and method for a multi-station pipe bending machine, belonging to the field of pipe bending machine cleaning technology. Background Technology

[0002] Pipe bending machines typically require continuous bending of tubular or long rod-shaped materials. Some materials may have impurities such as grease and debris on their surface. After prolonged use, these impurities will remain on the surface of the pipe bending machine, thus requiring cleaning.

[0003] During the cleaning of the pipe bending machine's surface, due to its large surface area, it is usually necessary to use a water hose for overall rinsing. This reduces the labor intensity of cleaning personnel. The mechanical arm of the pipe bending machine is usually wrapped with elastic cloth to prevent dust and liquid from entering the mechanical arm, so it can be directly rinsed with water. However, since the pipe bending machine's feeding structure usually has a rotating wheel assembly for feeding the pipe, water can seep into the bearing of the rotating wheel assembly through the gap between the rotating wheel and the bearing seat, causing it to rust and affecting the normal use of the rotating wheel assembly. If the rotating wheel assembly is cleaned separately with water, it will further promote water seepage into the gap between the rotating wheel and the bearing seat, further affecting the rotating wheel assembly. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a surface dirt cleaning device and method for a multi-station pipe bending machine, which solves the problem in the prior art that the rinsing water flow enters the bearing of the rotating wheel assembly through the gap between the rotating wheel and the bearing seat, causing it to rust and affecting the normal use of the rotating wheel assembly.

[0005] The technical problem to be solved by this invention is achieved by the following technical solution: A surface dirt cleaning device for a multi-station pipe bending machine, comprising a pipe bending machine, a feed support plate fixedly mounted on the pipe bending machine, a plurality of bearing seats fixedly mounted on the surface of the feed support plate, bearings mounted on the bearing seats, a conveyor wheel mounted on the outer side of the bearings, a bearing end cover for sealing the bearings on the side of the conveyor wheel away from the bearing seats, a gap existing between the conveyor wheel and the bearing seats, and a cleaning device mounted on the feed support plate, the cleaning device comprising: The cleaning chamber is located above the feed support plate, and the cleaning chamber and the feed support plate are fixed together with bolts and fasteners. Several cleaning chambers are provided and are located on the side of the cleaning box facing the feed support plate. The cleaning chambers correspond to the positions of the bearing seats. The cleaning section is located on the side of the inner wall of the cleaning chamber away from the feed support plate. The cleaning section is used to clean the surface of the conveyor wheel. The sealing part is located on the inner wall of the cleaning chamber near the feed support plate. The water supply unit, located on the side of the cleaning section away from the sealing section, is used to supply water to the cleaning chamber. An elastic sealing plate is circumferentially arranged around the cleaning cavity on the side of the sealing section closest to the cleaning section. The end of the elastic sealing plate is fixed to the inner wall of the cleaning cavity by an elastic connecting piece. The sealing part includes a second air chamber surrounding the cleaning chamber and opening towards the inside of the cleaning chamber, and a sealing flexible sheet disposed at the opening of the second air chamber to close the second air chamber. An elastic sealing plate abuts against the sealing flexible sheet and the elastic sealing plate blocks the end face of the sealing flexible sheet facing towards the inside of the cleaning chamber. The sealing flexible sheet can expand into the gap between the transmission wheel and the bearing seat and press the end of the elastic sealing plate away from the elastic connecting piece against the outer side of the transmission wheel in the gap. The sealing part also includes an air guiding structure that expands the sealing flexible sheet.

[0006] By adopting the above technical solution, after the cleaning chamber is placed on the feeding support plate and fixed to the feeding support plate with bolts, the conveyor wheel is located inside the cleaning chamber. Then, gas is injected into the second inflation chamber through the inflation structure, causing the sealing flexible sheet to expand. After the sealing flexible sheet expands, it lifts up the elastic sealing plate and presses it against the outer side of the conveyor wheel located in the gap. At this time, the elastic sealing plate is in an inclined state. The water supply unit introduces a small amount of water into the cleaning chamber. During the cleaning process of the conveyor wheel relying on the water flow, the water is conducted through the conveyor wheel to the bearing seat under the action of gravity. During the transmission process, the elastic sealing plate blocks the water generated during cleaning, preventing it from entering the bearing through the gap between the conveyor wheel and the bearing seat. This also prevents excessive water accumulation between the conveyor wheel and the bearing seat, which could lead to rust. This improves the protection of the conveyor wheel and bearing during cleaning. Furthermore, since the cleaning chamber completely covers several conveyor wheels, users can use an external spray nozzle to spray water to clean the remaining structure of the pipe bending machine. The sprayed water will not splash onto the conveyor wheels and cause them to rust, further reducing the impact of cleaning the pipe bending machine on internal structures such as bearings.

[0007] The present invention is further configured such that the cleaning unit includes: The first inflation chamber surrounds the inner wall of the cleaning chamber and communicates with the cleaning chamber. The first inflation chamber is also connected to the air guiding structure. A flexible cleaning sheet is positioned at the connection between the first inflation chamber and the cleaning chamber, thereby sealing the first inflation chamber. The brush layer is fixedly installed on the side of the cleaning flexible sheet facing the inside of the cleaning cavity, and the brush layer can abut and adhere to the outer surface of the conveyor wheel. The rotating part is located inside the cleaning chamber on the side away from the feed support plate. The rotating part is used to drive the conveyor wheel to rotate.

[0008] By adopting the above technical solution, while the air guiding structure inflates the second inflation chamber, it also introduces some gas into the first inflation chamber, causing the air pressure in the first inflation chamber to increase and the cleaning flexible sheet to expand into the cleaning chamber. Then, the cleaning flexible sheet expands into the groove on the surface of the conveyor wheel that contacts the tube, and the brush layer abuts against the groove of the conveyor wheel. As the rotating part drives the conveyor wheel to rotate, the conveyor wheel and the brush layer rub against each other, thereby cleaning the dirt attached to the groove of the conveyor wheel, achieving the purpose of cleaning the conveyor wheel.

[0009] The present invention is further configured such that the gas guiding structure includes: The air delivery tube has one end connected to both the second inflation chamber and the first inflation chamber. The air supply port is fixed on the outer side of the cleaning chamber and is connected to the other end of the air supply pipe.

[0010] By adopting the above technical solution, the gas supply port is connected to an external gas supply device, which allows the external gas supply device to introduce gas into the second inflation chamber through the gas guide pipe, and then into the first inflation chamber and the second inflation chamber respectively, thereby achieving the function of gas conduction.

[0011] The invention is further configured such that: a drainage cavity is provided in the wall of the cleaning cavity on the side of the elastic connecting piece away from the second inflation cavity; the drainage cavity surrounds the cleaning cavity; a plurality of water inlet channels are provided through the drainage cavity toward the inner wall of the cleaning cavity; the openings of the water inlet channels extend to the connection between the elastic connecting piece and the cleaning cavity; a water collection cavity communicating with the drainage cavity is provided in the cleaning box; and a drainage port communicating with the water collection cavity is fixedly provided on the outer side of the cleaning box.

[0012] By adopting the above technical solution, the water flow that is blocked by the elastic sealing plate in the cleaning chamber is introduced into the drainage chamber through the water inlet channel, and then stored in the water collection chamber. Finally, it is discharged through the drainage port, thus achieving the purpose of drainage and avoiding excessive water flow from accumulating in the space between the cleaning chamber and the conveyor wheel, which would affect the cleanliness of the conveyor wheel.

[0013] The present invention is further configured such that: the water supply unit includes a water supply cavity surrounding the wall of the cleaning chamber, the water supply cavity having a plurality of water spray holes extending through it toward the inside of the cleaning chamber, and a water supply port fixedly provided on the outer side of the cleaning chamber, one end of the water supply port extending into the cleaning chamber and communicating with the water supply cavity.

[0014] By adopting the above technical solution, the water supply port can be connected to an external water supply device, and then water flow is introduced into the water supply chamber and introduced into the cleaning chamber through the spray hole. Since the size of the spray hole opening is fixed, the water flow speed introduced into the cleaning chamber is constant when the water supply device does not change the flow rate, thus avoiding the impact of a large amount of water flow entering the cleaning chamber in a short time on the sealing flexible sheet.

[0015] The present invention is further configured such that: the middle part of the elastic sealing plate away from the extension direction of the elastic connecting piece is a bent structure, and an inner protrusion and an outer protrusion are fixedly provided on the side of the elastic sealing plate facing the sealing flexible piece and away from the sealing flexible piece, respectively, with the inner protrusion always abutting against the sealing flexible piece.

[0016] By adopting the above technical solution, since the elastic sealing plate is bent in the middle, when the conveyor wheel has not entered the cleaning chamber, the end of the elastic sealing plate away from the elastic connecting piece abuts against the flexible sealing piece under the action of gravity. At this time, the outer protrusion extends to the inside of the cleaning chamber, and the inner protrusion always abuts against the flexible sealing piece. The elastic sealing plate can shield the flexible sealing piece, preventing sharp foreign objects on the conveyor wheel from scratching the flexible sealing piece when the conveyor wheel enters the cleaning chamber, which is beneficial to improving the service life of the flexible sealing piece. When the conveyor wheel enters the cleaning chamber, the outer protrusion, located inside the cleaning chamber, will interfere with the movement of the conveyor wheel into the cleaning chamber. At this time, the conveyor wheel exerts a squeezing effect on the outer protrusion away from the cleaning chamber. The reaction force between the outer protrusion and the conveyor wheel can form friction to hinder the transmission. The conveyor wheel enters the cleaning chamber, whereby pressure is transmitted to the flexible sealing sheet via the elastic sealing plate and the inner protrusion. This causes the flexible sealing sheet to deform further toward the second inflation chamber, increasing the air pressure within the second inflation chamber. At this point, the gas is transmitted in reverse through the air guide tube to the first inflation chamber, causing the flexible cleaning sheet to slightly expand into the cleaning chamber. The brush layer on the flexible cleaning sheet can then contact the edge of the conveyor wheel end. Since the expanded flexible cleaning sheet extends into the groove on the conveyor wheel, when the groove is not aligned with the flexible cleaning sheet, the flexible cleaning sheet applies pressure to the surface of the conveyor wheel and, under the action of friction, further slows down the process of the conveyor wheel entering the cleaning chamber. This reduces the force of the cleaning chamber falling and impacting the feed support plate under gravity after the cleaning chamber is aligned with the conveyor wheel.

[0017] The invention is further configured such that: the rotating part includes a rotating disk; the cleaning chamber extends through the cleaning box on the side away from the feeding support plate, and the rotating disk is rotatably disposed at the through-hole; a connecting shaft is coaxially disposed on the side of the rotating disk facing the feeding support plate; the end of the connecting shaft is splinedly inserted into the rotating disk; a pressing plate is fixedly disposed on the end of the connecting shaft away from the rotating disk, abutting against the end face of the conveyor wheel; a locking bolt is disposed on the side of the rotating disk away from the connecting shaft; the end of the locking bolt is inserted into the rotating disk and threadedly connected to the rotating disk; the end of the locking bolt inserted into the rotating disk can abut against the connecting shaft to restrict the axial movement of the connecting shaft; a return spring is disposed between the rotating disk and the pressing plate; the return spring is disposed around the connecting shaft and its two ends are respectively fixed to the rotating disk and the pressing plate; a driving structure for driving the rotating disk to rotate is disposed on the outer side of the cleaning box away from the feeding support plate.

[0018] The present invention is further configured such that the driving structure includes: Synchronizing rods, several of which are provided and fixed on the side of the rotating disk away from the feed support plate, The connecting plate is located at the end of the synchronizing rod furthest from the rotating disc. The sprocket is fixedly mounted on the connecting disc and is coaxial with the rotating disc. Several sprockets are connected by a chain to form a sprocket group. A transmission box is provided on the side of the cleaning box away from the feed support plate, which surrounds the sprockets. A drive motor is fixedly installed on the outside of the transmission box. The drive motor is coaxially connected to one of the sprockets.

[0019] By adopting the above technical solution, when the cleaning chamber is completely placed on the feeding support plate, the conveyor wheel is fully inserted into the cleaning chamber. By rotating the locking bolt, the locking bolt can move towards the feeding support plate under the action of the thread structure, thereby pressing the connecting shaft and driving the pressing plate towards the conveyor wheel. Finally, the pressing plate presses against the conveyor wheel, at which point the return spring is stretched. Under the action of the friction force generated by the pressing plate pressing the conveyor wheel, the conveyor wheel and the pressing plate can rotate synchronously. By starting the drive motor, the drive motor drives one sprocket to rotate. At this time, under the action of the chain, all sprockets rotate. When the sprockets rotate, they drive the connecting disc to rotate, thereby causing the connecting disc to drive the rotating disc to rotate through the synchronizing rod. Since the connecting shaft is splinedly connected to the rotating disc, the rotating disc drives the pressing plate to rotate through the connecting shaft, so that the conveyor wheel can rotate stably in the cleaning chamber, achieving the purpose of driving the conveyor wheel.

[0020] A cleaning method for a surface dirt cleaning device of a multi-station pipe bending machine, the cleaning method including: S1: Align the cleaning chambers on the cleaning box with the bearing seats respectively, then place the cleaning box on the feeding support plate and use bolts to fix the feeding support plate to the cleaning box. S2: Inflate the second air chamber through the air guide structure to expand the sealing flexible sheet. At this time, the sealing flexible sheet expands to the gap between the conveyor wheel and the bearing seat, and the end of the elastic sealing plate away from the elastic connecting sheet abuts against the conveyor wheel. S3: Water is introduced into the water supply chamber through the water supply port, and the water is sprayed onto the outer side of the conveyor wheel through the spray hole; S4: The cleaning unit is activated to clean the conveyor wheel, and the elastic sealing plate traps water. S5: Close the cleaning unit to complete the cleaning process.

[0021] The beneficial effects of this invention are as follows: the water supply unit introduces a small amount of water into the cleaning chamber. During the cleaning process of the conveyor wheel using the water flow, the water is conducted through the conveyor wheel to the bearing seat under the action of gravity. During the conduction process, it is blocked by the elastic sealing plate. At this time, the water generated during cleaning cannot enter the bearing through the gap between the conveyor wheel and the bearing seat. It also avoids excessive accumulation of water between the conveyor wheel and the bearing seat, which would cause the conveyor wheel and the bearing seat to rust. This improves the protection effect on the conveyor wheel and the bearing during the cleaning process. At the same time, since the cleaning box completely covers several conveyor wheels, the user can use an external spray nozzle to spray water to clean the remaining structure of the pipe bending machine. The sprayed water will not splash onto the conveyor wheel and cause it to rust, further reducing the impact of cleaning the pipe bending machine on the internal bearing and other structures. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention installed on a pipe bending machine; Figure 2 This is a schematic diagram of the feeding module of the pipe bending machine in this invention; Figure 3 This is a schematic diagram of the driving structure in this invention; Figure 4 This is a partial sectional view of the present invention installed on a pipe bending machine; Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 for Figure 5 A schematic diagram of the structure of the flexible sealing sheet when it is not expanded.

[0023] In the diagram: 10. Feed support plate; 14. Air supply port; 15. Water supply port; 16. Conveyor wheel; 17. Bearing; 18. Bearing seat; 19. Bearing end cover; 20. Cleaning box; 21. Cleaning chamber; 22. Transmission box; 23. Divider cover; 24. Drive motor; 25. Sprocket; 26. Chain; 27. Connecting disc; 28. Synchronizing rod; 29. ​​Drain port; 30. Rotating disc; 31. Locking bolt; 32. Connecting shaft; 33. Pressing plate; 34. Return spring; 40. First inflation chamber; 41. Cleaning flexible sheet; 42. Air guide pipe; 43. Water supply chamber; 44. Water spray hole; 45. Second inflation chamber; 47. Water collection chamber; 48. Drain chamber; 49. Sealing flexible sheet; 50. Elastic sealing plate; 51. Elastic connecting piece; 52. Outer protrusion; 53. Inner protrusion; 54. Water inlet channel. Detailed Implementation

[0024] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0025] like Figures 1 to 2 As shown, a surface dirt cleaning device for a multi-station pipe bending machine includes a pipe bending machine with a feeding module. The feeding module includes a feeding support plate 10, on which a plurality of bearing seats 18 are fixedly disposed. The bearing seats 18 are arranged opposite to and staggered along the extending direction of the feeding support plate 10. The movement path of the pipe passes between the opposite bearing seats 18. Bearings 17 are installed on the bearing seats 18, and a conveying wheel 16 is installed on the outside of the bearings 17. The outer side of the conveying wheel 16 is surrounded by a groove for clamping the pipe. The pipe feeding direction and the relationship between the pipe and the conveying wheel 16 are as follows. Figure 2 As shown, a bearing end cap 19 for sealing the bearing 17 is provided on the side of the conveyor wheel 16 away from the bearing housing 18. There is a gap between the conveyor wheel 16 and the bearing housing 18. The cleaning device is detachably mounted on the feed support plate 10.

[0026] like Figures 3 to 4As shown, the cleaning device includes a cleaning housing 20, cleaning chambers 21, an elastic sealing plate 50, a cleaning section, a sealing section, and a water supply section. The cleaning housing 20 is detachably mounted above the feed support plate 10. The cleaning housing 20 and the feed support plate 10 are fixed together by bolts. The bolts penetrate the cleaning housing 20 and are inserted into the feed support plate 10, and are threadedly connected to the feed support plate 10. Several cleaning chambers 21 are provided and opened on the side of the cleaning housing 20 facing the feed support plate 10. The positions of the several cleaning chambers 21 correspond to the positions of several bearing seats 18, and the conveyor wheel 16 can be inserted into the cleaning chamber 21. The cleaning section is located on the inner wall of the cleaning chamber 21 away from the feed support plate 10. The cleaning section is used to clean the surface of the conveyor wheel 16. The sealing section is located on the inner wall of the cleaning chamber 21 near the feed support plate 10. An elastic sealing plate 50 is circumferentially arranged around the cleaning chamber 21 on the side of the sealing section near the cleaning section. The end of the elastic sealing plate 50 is fixed to the inner wall of the cleaning chamber 21 by an elastic connecting piece 51. The middle part of the elastic sealing plate 50 extending away from the elastic connecting piece 51 has a bent structure. An inner protrusion 53 and an outer protrusion 52 are fixedly provided on the side of the elastic sealing plate 50 facing the sealing flexible piece 49 and away from the sealing flexible piece 49, respectively. The inner protrusion 53 always abuts against the sealing flexible piece 49. The sealing section includes a second inflation chamber 45 surrounding the cleaning chamber 21 and opening towards the inner side of the cleaning chamber 21, and a sealing flexible piece 49 located at the opening of the second inflation chamber 45 to close the second inflation chamber 45. The sealing flexible piece 49 is made of a flexible expandable material, such as rubber or polytetrafluoroethylene. The elastic sealing plate 50 abuts against the sealing flexible sheet 49, and the elastic sealing plate 50 blocks the end face of the sealing flexible sheet 49 facing the inside of the cleaning chamber 21. The sealing flexible sheet 49 can expand into the gap between the conveyor wheel 16 and the bearing seat 18 and press the end of the elastic sealing plate 50 away from the elastic connecting piece 51 against the outer side of the conveyor wheel 16 in the gap. When the end of the elastic sealing plate 50 away from the elastic connecting piece 51 abuts against the conveyor wheel 16, the end of the elastic sealing plate 50 facing the elastic connecting piece 51 tilts towards the feed support plate 10. The sealing part also includes an air guiding structure that expands the sealing flexible sheet 49. The water supply part is provided on the side of the cleaning part away from the sealing part. The water supply part is used to provide water flow into the cleaning chamber 21. The water flow flows through the inner wall of the cleaning chamber 21 to the cleaning part.

[0027] like Figures 4 to 5As shown, the cleaning unit includes a first inflation chamber 40, a flexible cleaning sheet 41, a brush layer, and a rotating part. The first inflation chamber 40 is formed around the inner wall of the cleaning chamber 21 and communicates with the cleaning chamber 21. The first inflation chamber 40 is connected to the air guiding structure. The flexible cleaning sheet 41 is disposed at the connection between the first inflation chamber 40 and the cleaning chamber 21 and seals the first inflation chamber 40. The flexible cleaning sheet 41 is made of a wear-resistant flexible material, such as polytetrafluoroethylene. The brush layer is fixedly disposed on the side of the flexible cleaning sheet 41 facing the inside of the cleaning chamber 21. The brush layer can abut against and fit against the outer side of the conveyor wheel 16. Depending on the actual working conditions, the brush layer can be replaced with a rubber layer. The dirt attached to the groove of the conveyor wheel 16 is removed by friction and the generated heat. The rotating part is disposed inside the cleaning chamber 21 on the side away from the feed support plate 10. The rotating part is used to drive the conveyor wheel 16 to rotate. The rotating part includes a rotating disk 30. A cleaning chamber 21 extends through the cleaning box 20 on the side away from the feed support plate 10, with the rotating disk 30 rotatably positioned at the through-hole. A connecting shaft 32 is coaxially arranged on the side of the rotating disk 30 facing the feed support plate 10. The end of the connecting shaft 32 is splinedly connected to the rotating disk 30. A pressing plate 33 is fixedly arranged at the end of the connecting shaft 32 away from the rotating disk 30, abutting against the end face of the conveyor wheel 16. A locking bolt 31 is provided on the side of the rotating disk 30 away from the connecting shaft 32 for locking. The end of the bolt 31 is inserted into the rotating disk 30 and threadedly connected to the rotating disk 30. The end of the locking bolt 31 inserted into the rotating disk 30 can abut against the connecting shaft 32 to restrict the axial movement of the connecting shaft 32. A return spring 34 is provided between the rotating disk 30 and the pressing plate 33. The return spring 34 is arranged around the connecting shaft 32 and its two ends are fixed to the rotating disk 30 and the pressing plate 33 respectively. A drive structure for driving the rotating disk 30 to rotate is provided on the outer side of the cleaning box 20 away from the feeding support plate 10.

[0028] like Figures 3 to 4 As shown, the drive structure includes a sprocket 25, a connecting disc 27, and a synchronizing rod 28. Several synchronizing rods 28 are provided and fixed to the side of the rotating disk 30 away from the feed support plate 10. The connecting disc 27 is located at the end of the synchronizing rod 28 away from the rotating disk 30. The sprocket 25 is fixedly mounted on the connecting disc 27 and coaxially arranged with the rotating disk 30. Several sprockets 25 are connected by a chain 26 to form a sprocket assembly. A transmission housing 22 surrounding the sprockets 25 is provided on the side of the cleaning box 20 away from the feed support plate 10. A drive motor 24 is fixedly mounted on the outside of the transmission housing 22. The drive motor 24 is coaxially arranged with one of the sprockets 25 and is poweredly connected. A partition cover 23 surrounds the drive motor 24 to isolate it from the external environment.

[0029] like Figures 4 to 6As shown, the gas guiding structure includes a gas supply port 14 and a gas guiding pipe 42. One end of the gas guiding pipe 42 is connected to the second inflation chamber 45 and the first inflation chamber 40, respectively. The gas supply port 14 is fixed to the outer side of the cleaning chamber 20, and the other end of the gas supply port 14 is connected to the gas guiding pipe 42. The gas supply port 14 is connected to an external gas supply device, which allows the external gas supply device to introduce gas into the second inflation chamber 45 through the gas guiding pipe 42, and then into the first inflation chamber 40 and the second inflation chamber 45, respectively, to achieve the function of gas conduction.

[0030] like Figures 5 to 6 As shown, a drain cavity 48 is provided inside the wall of the cleaning chamber 21 on the side of the elastic connecting piece 51 away from the second inflation cavity 45. The drain cavity 48 surrounds the cleaning chamber 21, and several water inlet channels 54 are provided through the drain cavity 48 towards the inner wall of the cleaning chamber 21. The openings of the water inlet channels 54 extend to the connection between the elastic connecting piece 51 and the cleaning chamber 21. A water collection cavity 47 communicating with the drain cavity 48 is provided inside the cleaning box 20, and a drain port 29 communicating with the water collection cavity 47 is fixedly provided on the outer side of the cleaning box 20. When the water flow is blocked by the elastic sealing plate 50, the water flow is guided into the drain cavity 48 through the water inlet channels 54 under the action of the inclined elastic sealing plate 50, so as to avoid the water flow accumulating at the elastic sealing plate 50 and affecting the sealing effect.

[0031] like Figure 4 As shown, the water supply unit includes a water supply chamber 43 surrounding the wall of the cleaning chamber 21. The water supply chamber 43 has several water spray holes 44 extending through it towards the inside of the cleaning chamber 21. A water supply port 15 is fixedly installed on the outer side of the cleaning housing 20, with one end extending into the cleaning housing 20 and communicating with the water supply chamber 43. The water supply port 15 can be connected to an external water supply device, allowing water to flow into the water supply chamber 43 and then into the cleaning chamber 21 through the water spray holes 44. Since the opening size of the water spray holes 44 is fixed, the water flow velocity into the cleaning chamber 21 remains constant without changing the flow rate of the water supply device, preventing a large amount of water from entering the cleaning chamber 21 in a short time and affecting the sealing of the flexible sealing sheet 49.

[0032] During the initial cleaning, the water supply unit is not used. Instead, air is supplied to the inflation structure via an external air supply device. At this time, the sealing flexible sheet 49 and the cleaning flexible sheet 41 expand. The sealing flexible sheet 49 seals the structure, and the brush layer on the cleaning flexible sheet 41 rubs against the groove on the conveyor wheel 16. The heat generated by the friction is conducted to the dirt, promoting the dirt to detach from the conveyor wheel 16. Then, the water supply unit is used to introduce water into the cleaning chamber 21 for cleaning, resulting in a stronger cleaning effect.

[0033] During normal use, after the cleaning chamber 20 is placed on the feeding support plate 10, it is fixed to the feeding support plate 10 with bolt fasteners. At this time, the conveyor wheel 16 is located inside the cleaning chamber 21. Then, gas is injected into the second inflation chamber 45 through the inflation structure to expand the sealing flexible sheet 49. After the sealing flexible sheet 49 expands, it lifts up the elastic sealing plate 50 and presses it on the outer side of the conveyor wheel 16 located in the gap. At this time, the elastic sealing plate 50 is in an inclined state. The water supply part introduces a small amount of water into the cleaning chamber 21. During the cleaning process of the conveyor wheel 16 by the water flow, the water is conducted through the conveyor wheel 16 to the bearing seat 18 under the action of gravity. During the conduction process, it is blocked by the elastic sealing plate 50. Then, it is introduced into the drain chamber 48 through the water inlet channel 54, and then enters the water collection chamber 47 for storage. Finally, it is discharged through the drain port 29, which achieves the purpose of drainage and avoids excessive water flow accumulating in the space between the cleaning chamber 21 and the conveyor wheel 16, affecting the cleaning of the conveyor wheel 16. At this time, the water generated during cleaning cannot enter the bearing 17 through the gap between the conveyor wheel 16 and the bearing seat 18. This also prevents excessive water accumulation between the conveyor wheel 16 and the bearing seat 18, which could cause rusting. This improves the protection of the conveyor wheel 16 and the bearing 17 during the cleaning process. Since the cleaning box 20 completely covers several conveyor wheels 16, the user can use an external spray nozzle to spray water to clean the remaining structure of the pipe bending machine. The sprayed water will not splash onto the conveyor wheel 16 and cause it to rust, further reducing the impact of cleaning the pipe bending machine on the internal bearings and other structures.

[0034] While the air guide structure inflates the second inflation chamber 45, it also introduces some gas into the first inflation chamber 40, causing the air pressure in the first inflation chamber 40 to increase. The cleaning flexible sheet 41 expands into the cleaning chamber 21, and then expands into the groove on the surface of the conveyor wheel 16 that contacts the tube, with the brush layer abutting against the groove of the conveyor wheel 16. As the rotating part drives the conveyor wheel 16 to rotate, the conveyor wheel 16 and the brush layer rub against each other, thereby cleaning the dirt attached to the groove of the conveyor wheel 16, achieving the purpose of cleaning the conveyor wheel 16.

[0035] Because the elastic sealing plate 50 is bent in the middle, before the conveyor wheel 16 enters the cleaning chamber 21 (i.e., before the cleaning box 20 is installed), the air supply port 14 is sealed with a plug. The end of the elastic sealing plate 50 away from the elastic connecting piece 51 abuts against the flexible sealing piece 49 under gravity. At this time, the outer protrusion 52 extends to the inside of the cleaning chamber 21, and the inner protrusion 53 always abuts against the flexible sealing piece 49. The elastic sealing plate 50 can shield the flexible sealing piece 49, preventing subsequent... As the conveyor wheel 16 enters the cleaning chamber 21, sharp foreign objects embedded in it scratch the sealing flexible sheet 49, which helps to improve the service life of the sealing flexible sheet 49. When the conveyor wheel 16 enters the cleaning chamber 21, the outer protrusion 52, located inside the cleaning chamber 21, interferes with the movement of the conveyor wheel 16 into the cleaning chamber 21. At this time, the conveyor wheel 16 exerts a squeezing effect on the outer protrusion 52, moving it away from the cleaning chamber 21. The reaction between the outer protrusion 52 and the conveyor wheel 16... The force can generate friction to prevent the conveyor wheel 16 from entering the cleaning chamber 21. The pressure is then transmitted to the sealing flexible sheet 49 through the elastic sealing plate 50 and the inner protrusion 53, causing the sealing flexible sheet 49 to deform further toward the second inflation chamber 45. This increases the air pressure in the second inflation chamber 45. At this time, the gas will be transmitted in the opposite direction to the first inflation chamber 40 through the air guide pipe 42, causing the cleaning flexible sheet 41 to expand slightly into the cleaning chamber 21. At this time, the brush layer on the cleaning flexible sheet 41 can contact the edge of the end of the conveyor wheel 16. Since the cleaning flexible sheet 41 extends into the groove on the conveyor wheel 16 after expansion, when the groove is not aligned with the cleaning flexible sheet 41, the cleaning flexible sheet 41 applies pressure to the surface of the conveyor wheel 16 and, under the action of friction, further slows down the process of the conveyor wheel 16 entering the cleaning chamber 21. This reduces the force of the cleaning box 20 falling and colliding with the feed support plate 10 under the action of gravity after the cleaning chamber 21 is aligned with the conveyor wheel 16.

[0036] After the cleaning chamber 20 is fully placed on the feeding support plate 10, the conveyor wheel 16 is fully inserted into the cleaning chamber 21. By rotating the locking bolt 31, the bolt moves towards the feeding support plate 10 under the action of the threaded structure. This presses the connecting shaft 32, causing the pressing plate 33 to move towards the conveyor wheel 16. Finally, the pressing plate 33 presses against the conveyor wheel 16. At this time, the return spring 34 is stretched. Under the action of the friction generated by the pressing plate 33 pressing the conveyor wheel 16, the conveyor wheel 16 and the pressing plate 34... 3. It can rotate synchronously. By starting the drive motor 24, the drive motor 24 drives one sprocket 25 to rotate. At this time, under the action of the chain 26, all sprockets 25 are driven to rotate. When the sprockets 25 rotate, they drive the connecting plate 27 to rotate, so that the connecting plate 27 drives the rotating plate 30 to rotate through the synchronizing rod 28. Since the connecting shaft 32 is splinedly connected to the rotating plate 30, the rotating plate 30 drives the pressing plate 33 to rotate through the connecting shaft 32, so that the conveyor wheel 16 can rotate stably in the cleaning chamber 21, thereby achieving the purpose of driving the conveyor wheel 16.

[0037] In another embodiment, when cleaning not only the groove of the conveyor wheel 16 but also the outer curved surface of the conveyor wheel 16 is required, the external water supply structure is connected to the drain port 29. The water supply port 15 is used for drainage and is connected to the pumping equipment. At this time, the water flows into the drain chamber 48 through the drain port 29, and then into the cleaning chamber 21 through the water inlet channel 54. Due to the sealing effect of the flexible sealing sheet 49 and the elastic sealing plate 50, the water flow will not enter the gap between the bearing seat 18 and the conveyor wheel 16. At this time, the water flow is located between the conveyor wheel 16 and the inner wall of the cleaning chamber 21. The pressing plate 33 drives the conveyor wheel 16 to rotate, so that the conveyor wheel 16 presses against the water. The body is disturbed, causing the slight foreign matter attached to the conveyor wheel 16 to fall off. As the water volume gradually increases, the water level gradually rises. At this time, the water flow rises upward through the brush layer between the cleaning flexible sheet 41 and the groove of the conveyor wheel 16, and finally enters the water supply chamber 43 through the water spray hole 44, and is then extracted through the water supply port 15. Since there is also water flow in the cleaning flexible sheet 41 and the groove of the conveyor wheel 16, the cleaning flexible sheet 41 can clean the groove of the conveyor wheel 16 normally when the conveyor wheel 16 rotates. This achieves the beneficial effect of producing two cleaning modes for the conveyor wheel 16, namely cleaning the groove of the conveyor wheel 16 alone and cleaning the outer curved surface and the groove of the conveyor wheel 16 together.

[0038] A cleaning method for a surface dirt cleaning device of a multi-station pipe bending machine, the cleaning method including: S1: Align the cleaning chambers 21 on the cleaning box 20 with the bearing seats 18 respectively, and then slowly place the cleaning box 20 on the feeding support plate 10 so that the conveying wheel 16 enters the cleaning chamber 21. After the cleaning box 20 is completely placed on the feeding support plate 10, use bolts to fix the feeding support plate 10 and the cleaning box 20. S2: After connecting the gas supply port 14 to the external gas supply device, the gas is introduced through the gas supply port 14 by the external gas supply device. Then the gas enters the gas guide pipe 42 in the gas guide structure and is conducted to the second inflation chamber 45 and the first inflation chamber 40 through the gas guide pipe 42. After the second inflation chamber 45 is inflated, the sealing flexible sheet 49 expands and deforms. At this time, the sealing flexible sheet 49 expands to seal the gap between the transmission wheel 16 and the bearing seat 18. At the same time, the cleaning flexible sheet 41 expands and deforms and extends into the groove of the transmission wheel 16. Due to the expansion of the sealing flexible sheet 49, the end of the elastic sealing plate 50 away from the elastic connecting piece 51 is pressed to the outer side of the transmission wheel 16 so that the elastic sealing plate 50 and the transmission wheel 16 are tightly abutted. S3: After connecting the water supply port 15 to the external water supply equipment, water is introduced into the water supply chamber 43, and a small amount of water is sprayed onto the outer side of the conveyor wheel 16 through the spray hole 44. At the same time, the amount of water entering the cleaning chamber 21 is adjusted by adjusting the water supply of the external water supply equipment. S4: Start the cleaning unit, causing the pressing plate 33 to drive the transmission wheel 16 to rotate. At the same time, since the cleaning flexible sheet 41 extends into the groove of the transmission wheel 16, the brush layer cleans the groove of the transmission wheel 16 during the rotation of the transmission wheel 16. Combined with the water flow, the cleaning effect can be maximized. The water will flow downward under the action of gravity. At this time, the elastic sealing plate 50 intercepts and discharges the water. S5: Close the cleaning section to stop the pressing plate 33 from driving the transmission wheel 16 to rotate. Then, control the external water supply equipment to stop supplying water. After standing still, control the external air supply equipment to stop supplying air, so that the cleaning flexible sheet 41 and the sealing flexible sheet 49 return to their unexpanded state. Then, the bolt fastening clamp can be removed to separate the feed support plate 10 from the cleaning box 20, thus completing the cleaning process.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface dirt cleaning device for a multi-station pipe bending machine, comprising a pipe bending machine, a feed support plate (10) fixedly mounted on the pipe bending machine, a plurality of bearing seats (18) fixedly mounted on the surface of the feed support plate (10), bearings (17) mounted on the bearing seats (18), a conveyor wheel (16) mounted on the outside of the bearings (17), a bearing end cap (19) for sealing the bearings (17) is provided on the side of the conveyor wheel (16) away from the bearing seats (18), and there is a gap between the conveyor wheel (16) and the bearing seats (18), characterized in that: A cleaning device is provided on the feed support plate (10), the cleaning device including: The cleaning chamber (20) is positioned above the feed support plate (10), and the cleaning chamber (20) and the feed support plate (10) are fixed together by bolts. The cleaning chamber (21) is provided in several parts and is opened on the side of the cleaning box (20) facing the feed support plate (10). The cleaning chamber (21) corresponds to the position of the bearing seat (18). The cleaning section is located on the side of the inner wall of the cleaning chamber (21) away from the feed support plate (10). The cleaning section is used to clean the surface of the conveyor wheel (16). The sealing part is located on the inner wall of the cleaning chamber (21) near the feed support plate (10). The water supply unit is located on the side of the cleaning section away from the sealing section. The water supply unit is used to supply water to the cleaning chamber (21). An elastic sealing plate (50) is circumferentially arranged around the cleaning cavity (21) on the side of the sealing part near the cleaning part. The end of the elastic sealing plate (50) is fixed to the inner wall of the cleaning cavity (21) by an elastic connecting piece (51). The sealing part includes a second inflation chamber (45) surrounding the cleaning chamber (21) and opening toward the inside of the cleaning chamber (21), and a sealing flexible sheet (49) disposed at the opening of the second inflation chamber (45) to close the second inflation chamber (45). An elastic sealing plate (50) abuts against the sealing flexible sheet (49) and the elastic sealing plate (50) blocks the end face of the sealing flexible sheet (49) toward the inside of the cleaning chamber (21). The sealing flexible sheet (49) can expand into the gap between the transmission wheel (16) and the bearing seat (18) and press the end of the elastic sealing plate (50) away from the elastic connecting piece (51) onto the outer side of the transmission wheel (16) in the gap. The sealing part also includes an air guiding structure that expands the sealing flexible sheet (49).

2. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 1, characterized in that: The cleaning department includes: The first inflation chamber (40) surrounds the inner wall of the cleaning chamber (21) and communicates with the cleaning chamber (21). The first inflation chamber (40) is also connected to the air guiding structure. A cleaning flexible sheet (41) is disposed at the connection between the first inflation chamber (40) and the cleaning chamber (21) and closes the first inflation chamber (40). The brush layer is fixedly installed on the side of the cleaning flexible sheet (41) facing the inside of the cleaning cavity (21), and the brush layer can abut and fit against the outer side of the conveyor wheel (16). The rotating part is located inside the cleaning chamber (21) on the side away from the feed support plate (10), and the rotating part is used to drive the conveyor wheel (16) to rotate.

3. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 2, characterized in that: The gas guiding structure includes: The air duct (42) is connected at one end to the second inflation chamber (45) and the first inflation chamber (40) respectively. The air supply port (14) is fixed on the outer side of the cleaning box (20), and the air supply port (14) is connected to the other end of the air guide pipe (42).

4. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 1, characterized in that: A drain cavity (48) is provided in the wall of the cleaning cavity (21) on the side away from the second inflation cavity (45) of the elastic connecting piece (51). The drain cavity (48) surrounds the cleaning cavity (21). Several water inlet channels (54) are provided through the drain cavity (48) facing the inner wall of the cleaning cavity (21). The opening of the water inlet channel (54) extends to the connection between the elastic connecting piece (51) and the cleaning cavity (21). A water collection cavity (47) communicating with the drain cavity (48) is provided in the cleaning box (20). A drain port (29) communicating with the water collection cavity (47) is fixedly provided on the outer side of the cleaning box (20).

5. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 1, characterized in that: The water supply unit includes a water supply chamber (43) surrounding the wall of the cleaning chamber (21). The water supply chamber (43) has several water spray holes (44) extending through the inner side of the cleaning chamber (21). A water supply port (15) is fixedly provided on the outer side of the cleaning box (20). One end of the water supply port (15) extends into the cleaning box (20) and communicates with the water supply chamber (43).

6. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 1, characterized in that: The middle part of the elastic sealing plate (50) extending away from the elastic connecting piece (51) is a bent structure, and an inner protrusion (53) and an outer protrusion (52) are fixedly provided on the side of the elastic sealing plate (50) facing the sealing flexible piece (49) and away from the sealing flexible piece (49), respectively. The inner protrusion (53) always abuts against the sealing flexible piece (49).

7. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 2, characterized in that: The rotating part includes a rotating disk (30). The cleaning chamber (21) is located on the side away from the feeding support plate (10), through which the cleaning box (20) passes and the rotating disk (30) is rotatably positioned. A connecting shaft (32) is coaxially arranged on the side of the rotating disk (30) facing the feeding support plate (10). The end of the connecting shaft (32) is splinedly connected to the rotating disk (30). A pressing plate (33) is fixedly arranged on the end of the connecting shaft (32) away from the rotating disk (30) to abut against the end face of the conveyor wheel (16). A locking bolt (31) is arranged on the side of the rotating disk (30) away from the connecting shaft (32) for locking. The end of the bolt (31) is inserted into the rotating disk (30) and threadedly connected to the rotating disk (30). The end of the locking bolt (31) inserted into the rotating disk (30) can abut against the connecting shaft (32) to restrict the axial movement of the connecting shaft (32). A return spring (34) is provided between the rotating disk (30) and the pressing plate (33). The return spring (34) is arranged around the connecting shaft (32) and its two ends are fixed to the rotating disk (30) and the pressing plate (33) respectively. A drive structure for driving the rotating disk (30) to rotate is provided on the outer side of the cleaning box (20) away from the feeding support plate (10).

8. The surface dirt cleaning device for a multi-station pipe bending machine according to claim 7, characterized in that: The driving structure includes: Synchronizing rods (28) are provided in several units and fixed on the side of the rotating disk (30) away from the feed support plate (10). The connecting plate (27) is located at the end of the synchronizing rod (28) away from the rotating plate (30). The sprocket (25) is fixedly mounted on the connecting disc (27) and is coaxially mounted with the rotating disc (30). Among them, several sprockets (25) are connected by a chain (26) to form a sprocket group. A transmission box (22) surrounding the sprockets (25) is provided on the side of the cleaning box (20) away from the feed support plate (10). A drive motor (24) is fixedly provided on the outside of the transmission box (22). The drive motor (24) is coaxially arranged with a sprocket (25) and poweredly connected.

9. A cleaning method for a surface dirt cleaning device for a multi-station pipe bending machine according to any one of claims 1-8, characterized in that: The cleaning method includes: S1: Align the cleaning chambers (21) on the cleaning box (20) with the bearing seat (18) respectively, then place the cleaning box (20) on the feed support plate (10) and fix the feed support plate (10) and the cleaning box (20) with bolts and fasteners. S2: The sealing flexible sheet (49) is expanded by inflating the second inflation chamber (45) through the air guide structure. At this time, the sealing flexible sheet (49) expands to the gap between the transmission wheel (16) and the bearing seat (18), and at the same time, the end of the elastic sealing plate (50) away from the elastic connecting piece (51) abuts against the transmission wheel (16). S3: Water is introduced into the water supply chamber (43) through the water supply port (15), and the water is sprayed onto the outer side of the conveyor wheel (16) through the spray hole (44); S4: Start the cleaning unit to clean the conveyor wheel (16), and the elastic sealing plate (50) traps the water; S5: Close the cleaning unit to complete the cleaning process.

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