On-line cleaning device for the outer surface of a workpiece

Abstract

The application discloses an online cleaning device for the outer surface of a workpiece, which comprises a rack serving as a bearing main body, a jacking device, a supporting mechanism for supporting the workpiece, a jacking mechanism for jacking the workpiece on the supporting mechanism to a clamping height, a clamping and rotating device, a clamping mechanism for clamping the jacked workpiece, a rotating mechanism for driving the clamped workpiece to rotate around its axis, and a cleaning device comprising a cleaning head with a drivable cleaning part, wherein the drivable movement of the cleaning head makes the cleaning part clean the outer surface of the workpiece. The application is designed for the workpiece-shaped workpiece and the situation that the outer surface of the workpiece needs to be cleaned for 360 degrees. The jacking device, the clamping and rotating device and the cleaning device are used to realize the automatic cleaning of the outer surface of the workpiece, help the closed-loop production of the production line, reduce the personnel intervention and improve the product yield.

Description

Technical Field

[0001] This invention relates to the field of precision manufacturing technology, and in particular to an online cleaning device for the outer surface of a workpiece. Background Technology

[0002] In some precision manufacturing processes, such as the sealing and coating of cast workpieces, glue overflow is inevitable after coating, resulting in poor appearance of the workpiece. Manual grinding and rework are often required. However, manual grinding and rework is not only inefficient, but also relies heavily on the experience and sense of responsibility of the workers, which may result in poor cleaning results.

[0003] Therefore, how to efficiently clean the workpieces of the product is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] In view of this, the present invention provides an online cleaning and wiping device for the outer surface of a workpiece, which realizes automatic cleaning and wiping of the outer surface of the workpiece, helps the production line to achieve closed-loop production, reduces human intervention, and improves product yield.

[0005] The present invention provides an online cleaning device for the outer surface of a workpiece, which adopts the following technical solution:

[0006] An online cleaning device for the outer surface of a workpiece includes:

[0007] The frame serves as the main load-bearing structure;

[0008] A lifting device, comprising a lifting mechanism and a support mechanism for supporting a workpiece, wherein the lifting mechanism is used to lift the workpiece on the support mechanism to a clamping height;

[0009] A clamping and rotating device, comprising a clamping mechanism and a rotating mechanism, wherein the clamping mechanism is used to clamp the lifted workpiece, and the rotating mechanism is used to drive the clamped workpiece to rotate around its axis.

[0010] A cleaning device includes a cleaning head having a driveable cleaning section, the driveable movement of which causes the cleaning section to clean the outer surface of a workpiece.

[0011] Optionally, the clamping and rotating device includes a main clamping mechanism, a secondary clamping mechanism, and a drive mechanism. The drive mechanism is used to adjust the distance between the main clamping mechanism and the secondary clamping mechanism. The main clamping mechanism is provided with an active rotating part, which can be driven to rotate the workpiece. The rotating mechanism is used to drive the active rotating part to rotate. The secondary clamping mechanism is provided with a driven rotating part.

[0012] Optionally, the cleaning device includes a second driving mechanism, which is used to drive the cleaning head to move in a vertical direction.

[0013] Optionally, the cleaning device further includes a connecting arm. The fixed arm includes a fixed arm, a sliding arm, and a drive mechanism. The sliding arm is slidably fitted inside the fixed arm, and the cleaning head is disposed on the sliding arm. The drive mechanism is used to drive the sliding arm to move and adjust the overall length of the connecting arm.

[0014] Optionally, the driving mechanism includes a first driving member, a second driving member, and a third driving member. The first driving member is used to drive the main clamping mechanism to move, the second driving member is used to drive the secondary clamping mechanism to move, and the clamping rotation device further includes a sliding seat. The first driving member and the second driving member are disposed on the sliding seat, and the third driving member is used to drive the sliding seat to slide along the axial direction of the workpiece.

[0015] Optionally, it also includes a control system, which is used to control the start and stop, speed and stroke of drive mechanism one, drive mechanism two, drive mechanism three, and rotating mechanism, as well as to detect the detection angle of the rotating mechanism.

[0016] Optionally, the drive mechanism three includes an elastic element and an electric cylinder. A length detection sensor is installed inside the connecting arm. The length detection sensor is used to detect the sliding distance of the sliding arm. The elastic element is used to drive the sliding arm to move away from the fixed arm. The electric cylinder is used to drive the sliding arm to reciprocate. When cleaning the workpiece for the first time, the drive mechanism three resets. The elastic element drives the sliding arm to move outward so that the cleaning head is pressed against the outer surface of the workpiece. The rotating mechanism is driven to rotate. The length detection sensor transmits the sliding distance of the sliding arm to the control system. After the rotating mechanism rotates one revolution, the cleaning device resets. The drive mechanism three drives the workpiece to move axially so that the uncleaned part of the workpiece moves below the cleaning head. The cleaning steps are repeated until the axial outer surface of the workpiece is cleaned. When cleaning the same workpiece, the control system controls the stroke of the electric cylinder according to the stroke of the drive mechanism three, the rotation speed of the rotating mechanism, and the corresponding length detection sensor.

[0017] Optionally, the movable end of the electric cylinder is equipped with an electromagnet, which is attracted to the sliding arm after being energized.

[0018] Optionally, an airbag is provided between the connecting arm and the cleaning head. The airbag has multiple areas along the circumference of the cleaning part. The areas of the airbag can be inflated or inhaled to drive the cleaning head to rotate. A pressure detection sensor is provided inside the airbag to detect the pressure of the area. The control system controls the inflation and deflating of each area of ​​the airbag and receives the pressure value detected by the pressure detection sensor.

[0019] Optionally, the support mechanism includes a support plate for supporting the bottom of the workpiece, and the lifting mechanism is used to drive the support plate to lift the workpiece to a specified height in a vertical direction.

[0020] In summary, the present invention includes at least one of the following beneficial technical effects: for workpieces that require 360° cleaning of their outer surface, the invention is specifically designed to achieve automatic cleaning of the workpiece's outer surface through a lifting device, a clamping and rotating device, and a cleaning device, thereby facilitating closed-loop production on the production line, reducing human intervention, and improving product yield. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the connecting arm according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the airbag according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the airbag and the cleaning head in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Workpiece; 3. Lifting mechanism; 4. Support mechanism; 5. Airbag; 6. Cleaning device; 7. Rotating mechanism; 8. Main clamping mechanism; 9. Secondary clamping mechanism; 10. Drive component one; 11. Drive component two; 12. Drive component three; 13. Sliding seat; 14. Drive mechanism two; 15. Cleaning head; 16. Cleaning part; 17. Connecting arm; 18. Fixed arm; 19. Sliding arm; 20. Elastic element; 21. Electric cylinder; 22. Length detection sensor; 23. Electromagnet; 24. Support plate. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0027] This invention discloses an online cleaning device for the outer surface of a workpiece.

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4An online cleaning device for the outer surface of a workpiece includes a frame 1, a lifting device, a clamping and rotating device, and a cleaning device 6. The frame 1 serves as the main support. The lifting device includes a lifting mechanism 3 and a support mechanism 4 for supporting the workpiece 2. The lifting mechanism 3 is used to lift the workpiece 2 on the support mechanism 4 to the clamping height. The clamping and rotating device includes a clamping mechanism and a rotating mechanism 7. The clamping mechanism is used to clamp the lifted workpiece 2, and the rotating mechanism 7 is used to drive the clamped workpiece 2 to rotate around its axis. The cleaning device 6 includes a cleaning head 15, which has a driveable cleaning part 16. The driveable movement of the cleaning head 15 causes the cleaning part 16 to clean the outer surface of the workpiece 2.

[0029] For workpieces that require 360° cleaning of their outer surface, an automatic cleaning device is achieved through a lifting device, a clamping and rotating device, and a cleaning device 6. This helps the production line achieve closed-loop production, reduces human intervention, and improves product yield.

[0030] The worker places the workpiece on the support mechanism 4. The control system controls the lifting mechanism 3 to lift the workpiece to the clamping height so that the workpiece can be clamped by the clamping mechanism. Then, the control system controls the clamping mechanism to clamp the workpiece. After clamping, the cleaning head 15 is driven to move to the outer surface of the workpiece, and the cleaning part 16 rotates. Then, the control system controls the rotation mechanism 7 to start and drive the workpiece to rotate a certain angle. When the rotation mechanism 7 rotates 360 degrees, it indicates that the outer surface of the workpiece in contact with the cleaning part 16 has been cleaned. At this time, the control system controls the clamping mechanism to move along the axial direction of the workpiece so that the cleaning part 16 cleans the remaining un-cleaned parts of the workpiece. This work process is repeated until the workpiece is cleaned. Then, the lifting mechanism 3 contacts the workpiece, the clamping mechanism separates from the workpiece, and the lifting mechanism 3 drives the workpiece down to the support mechanism 4, completing the workpiece cleaning process.

[0031] In this embodiment, the support mechanism 4 includes a support plate 24 and a support base. The support plate 24 supports the bottom of the workpiece. Two support plates 24 are provided, spaced apart on the support base along the axial direction of the workpiece. The lifting mechanism 3 drives the support plates 24 to lift the workpiece to a specified height in the vertical direction. In this embodiment, the lifting mechanism 3 is a cylinder, and the piston rod of the cylinder is fixedly connected to the support base. The control system controls the start, stop, and travel of the lifting mechanism 3.

[0032] In this embodiment, the clamping and rotating device includes a main clamping mechanism 8, a secondary clamping mechanism 9, a sliding seat 13, and a first driving mechanism. The first driving mechanism is used to adjust the distance between the main clamping mechanism 8 and the secondary clamping mechanism 9. In this embodiment, the first driving mechanism is a cylinder. The first driving mechanism is respectively provided on the main clamping mechanism 8 and the secondary clamping mechanism 9. In this embodiment, the first driving mechanism includes a first driving member 10, a second driving member 11, and a third driving member 12. The first driving member 10 is used to drive the main clamping mechanism 8 to move, the second driving member 11 is used to drive the secondary clamping mechanism 9 to move, the first driving member 10 and the second driving member 11 are provided on the sliding seat 13, and the third driving member 12 is used to drive the sliding seat 13 to slide along the axial direction of the workpiece. The control system controls the start, stop, and stroke of the first driving member 10, the second driving member 11, and the third driving member 12.

[0033] The control system controls the start, stop, and corresponding travel of the drive components 10 and 11 on the main clamping mechanism 8 and the auxiliary clamping mechanism 9. Drive components 10 and 11 are used to move the corresponding clamping mechanisms, adjusting not only the distance between the main clamping mechanism 8 and the auxiliary clamping mechanism 9, but also, when the distance between the main clamping mechanism 8 and the auxiliary clamping mechanism 9 is fixed, simultaneously controlling the travel of drive component 12 to drive the workpiece to move along its own axial position.

[0034] In this embodiment, the secondary clamping mechanism 9 is located at the end of the workpiece axially close to the frame 1, and the primary clamping mechanism 8 is located at the end of the workpiece axially away from the frame 1. The extendable stroke of the driving member 12 is greater than the axial length of the workpiece. Under the drive of the driving member 12, the primary clamping mechanism 8 and the secondary clamping mechanism 9 can move the workpiece axially so that the outer surface of the workpiece is in contact with the cleaning head 15.

[0035] In this embodiment, the main clamping mechanism 8 is rotatably fitted with an active rotating part, which can be driven to rotate around its own axis. The rotating mechanism 7 is used to drive the active rotating part to rotate. In this embodiment, the rotating mechanism 7 is a servo motor, which is connected to the active rotating part. The active rotating part can be driven by the servo motor to drive the workpiece to rotate. The secondary clamping mechanism 9 is provided with a driven rotating part. The speed, rotation angle, and number of rotations of the servo motor are transmitted to the control system.

[0036] Since the distance between drive component 10 and drive component 2 is fixed, the axial length of the workpiece can be determined by subtracting the initial extension stroke of drive component 10 and drive component 2 from the fixed distance between drive component 10 and drive component 2. Since the horizontal displacement between the cleaning part 16 and the fixed end of drive component 10 is fixed, the difference between the extension distance of drive component 10 and the fixed horizontal displacement is compensated by drive component 3 12, or by the extension and retraction of drive component 10 and drive component 2 11. This allows the workpiece to be cleaned from the end closest to the frame 1 to the end furthest from the frame 1, ensuring the cleaning effect of the workpiece. It is suitable for workpieces of any length and has low requirements for the accuracy of the workpiece placement on the support block, making cleaning convenient.

[0037] In this embodiment, after the difference compensation is completed, the point is recorded as the starting point (zero point). The extension stroke of the first drive component 10 and the second drive component 11 is transmitted to the control system. The control system calculates the axial length of the workpiece, uses the starting point as the zero point, and establishes the XYZ axis. The axial width of the workpiece is the positive length in the X direction, the Y direction is the outer surface radius of the workpiece, and the Z direction is the rotation angle of the rotating mechanism 7. Thus, a three-dimensional image of the workpiece of this model is established and transmitted to the control system for storage. When the workpiece of this model is cleaned again later, the cleaning device 6 directly cleans the workpiece according to the established three-dimensional image, thereby improving the cleaning effect and cleaning efficiency.

[0038] In this embodiment, the cleaning head 15 includes a cleaning body and a cleaning part 16. The cleaning part 16 is rotatably mounted on the cleaning body. The cleaning body has a built-in motor that drives the cleaning part 16 to rotate. The cleaning part 16 is detachably mounted on the cleaning body for easy replacement. In this embodiment, one cleaning head 15 is arranged radially forward and backward on the frame 1. The two cleaning heads 15 are inclined and can contact the tangential surface of the outer surface of the workpiece to complete the cleaning of the outer surface of the workpiece.

[0039] In this embodiment, the cleaning device 6 further includes a connecting arm 17, and a fixed arm 18 including a fixed arm 18, a sliding arm 19, and a third drive mechanism. The sliding arm 19 is slidably fitted within the fixed arm 18, and the cleaning head 15 is disposed on the sliding arm 19. The third drive mechanism is used to drive the sliding arm 19 to move and adjust the overall length of the connecting arm 17. The frame 1 is provided with a track along the vertical direction. In this embodiment, the cleaning device 6 includes a second drive mechanism 14. In this embodiment, the second drive mechanism 14 is a cylinder, and the control system controls the start, stop, and extension / retraction stroke of the second drive mechanism 14. The second drive mechanism 14 is used to drive the cleaning head 15 to move vertically, causing the cleaning head 15 to contact or separate from the outer surface of the workpiece. A sliding block is provided inside the track. The sliding block is slidably fitted inside the track in the vertical direction. The second drive mechanism 14 is located on the top of the frame 1 and is used to drive the sliding block to slide in the vertical direction. The fixed arm 18 is fixedly installed on the sliding block. A sliding groove is opened at the end of the sliding arm 19 away from the sliding block. The sliding arm 19 is slidably fitted inside the sliding groove.

[0040] In this embodiment, the driving mechanism three includes an elastic element 20 and an electric cylinder 21. A length detection sensor 22 is fixedly installed in the sliding groove. The length detection sensor 22 is used to detect the sliding distance of the sliding arm 19. The length detection sensor 22 can be a laser rangefinder or a pull rope length sensor. In this embodiment, a pull rope length sensor is used. The elastic element 20 applies an outward preload to the sliding arm 19 to drive the sliding arm 19 to move away from the fixed arm 18. In this embodiment, the elastic element 20 is a spring, and multiple springs are arranged at circumferential intervals along the movable end of the electric cylinder 21 to make the movement of the sliding arm 19 more stable. The electric cylinder 21 is used to drive the sliding arm 19 to slide back and forth. The fixed end of the electric cylinder 21 is fixedly installed in the sliding groove, and the movable end of the electric cylinder 21 is connected to the sliding arm 19. The control system receives and stores the detection distance value of the length detection sensor 22.

[0041] In this embodiment, an electromagnet 23 is provided at the movable end of the electric cylinder 21. When the electromagnet 23 is energized, it is attracted to the sliding arm 19. At this time, the extension and retraction of the electric cylinder 21 can drive the sliding arm 19 to extend and retract.

[0042] When cleaning this type of workpiece for the first time, the rotation angle and number of rotations of the servo motor are reset, as are drive mechanisms one, two (14), and three. Drive components one (10) and two (11) drive the main clamping mechanism 8 and the auxiliary clamping mechanism 9 to move and clamp the workpiece. The control system establishes the X-axis length, drive mechanism two (14) is activated, driving the cleaning head 15 to move downwards. After moving to the designated position (at this time, the cleaning part 16 is not in contact with the workpiece), the electromagnet 23 is de-energized, and the elastic element 20 drives the sliding arm 19 to move outwards, so that the cleaning head 15 presses against the outer surface of the workpiece, driving the rotation mechanism 7 to rotate. The length detection sensor 22 transmits the sliding distance of the sliding arm 19 to the control system. After the mechanism 7 rotates one revolution, the cleaning device 6 resets. At this time, the control system establishes the corresponding Y and Z axes based on the length value detected by the length detection sensor 22 and the rotation angle. Then, the drive component 3 12 drives the workpiece to move along the axial direction, so that the uncleaned part 16 of the workpiece moves to below the cleaning head 15. The cleaning steps are repeated until the cleaning in the X-axis direction is completed. When cleaning the same type of workpiece, the control system drives the extension and retraction strokes of the drive component 1 10, drive component 2 11, and drive component 3 12, the rotation speed of the rotating mechanism 7, and the extension and retraction strokes of the electric cylinder 21 detected by the corresponding length detection sensor 22, so that the cleaning part 16 is continuously pressed against the workpiece, eliminating the need for the electromagnet 23 to be de-energized.

[0043] Through the above technical solutions and corresponding working processes, this device can be adapted to cleaning workpieces of different lengths and sizes with high precision. Moreover, it does not require high precision in the placement of the workpiece, as the position of the workpiece relative to the cleaning part 16 can be adjusted by the drive mechanism. It has strong applicability and high versatility.

[0044] In addition, the control system controls the speed of the rotating mechanism 7. When cleaning this type of workpiece for the first time, the rotation speed of the cleaning section 16 and the rotating mechanism 7 can be increased to further improve the cleaning effect and efficiency.

[0045] In this embodiment, an airbag 5 is provided between the connecting arm 17 and the cleaning head 15. The airbag 5 has multiple regions along the circumference of the cleaning part 16. The more regions there are, the more precise the control of the rotation of the cleaning part 16 is. Each region of the airbag 5 can be individually inflated or inhaled to control the rotation direction of the cleaning head 15. Each region of the airbag 5 is provided with a pressure detection sensor for detecting the region's pressure. The control system controls the inflation and deflation of each region of the airbag 5 and receives the pressure value detected by the pressure detection sensor.

[0046] In this embodiment, a pressure threshold range is preset in the control system. Within this pressure threshold range, the cleaning part 16 and the workpiece are in a tight contact state, which can ensure the cleaning part 16 can clean the workpiece.

[0047] In this embodiment, the lateral expansion and contraction of the airbag 5 is more convenient than the longitudinal expansion and contraction. That is, when the airbag 5 is inflated, it first expands in the direction close to the cleaning head 15, and then expands in the direction perpendicular to the cleaning head 15. The design of the airbag 5 area and the coordinated design of the pressure detection sensor enable the cleaning head 15 to detect protrusions and depressions on the workpiece. When the drive component 12 moves the workpiece axially or the rotation mechanism 7 moves the workpiece circumferentially, if the control system detects that the pressure value detected by the pressure detection sensor in a certain area is less than the preset pressure threshold, and the pressure remains less than the threshold even after continued inflation, it indicates that there is a depression at that point. The control system inflates the airbag 5 area within the pressure threshold range, causing the cleaning part 16 to rotate towards the airbag 5 area below the pressure threshold range. When the pressure in the airbag 5 below the pressure threshold range is within the pressure threshold range, inflation stops, completing the cleaning of the depression area of ​​the workpiece. Similarly, if the pressure value of the airbag 5 in a certain area is significantly higher than the pressure threshold, it indicates that there is a protrusion. The control system then controls the airbag 5 in the corresponding area to inflate or inhale, driving the cleaning part 16 to rotate, ensuring that the airbag 5 area is stably within the pressure threshold range.

[0048] In this embodiment, the airbag 5 not only ensures that the cleaning part 16 remains in a tight contact with the cleaning part 16, but also maintains this tight contact even if the radii of adjacent cleaning parts 16 change slightly. Simultaneously, it effectively prevents excessive cleaning force between the cleaning parts 16 and the cleaning part 16, ensuring that the cleaning force between the cleaning parts 16 and the cleaning part 16 remains within a reasonable range. Furthermore, the contact condition can be detected by the pressure value of the pressure sensor. For example, when cleaning this type of workpiece for the first time, the drive mechanism 2 14 drives... When the cleaning head 15 moves down to the designated position, if the pressure sensor does not detect a change in pressure, it indicates that the cleaning part 16 is not in contact with the outer surface of the workpiece. In this case, the drive mechanism 14 continues to move down until the pressure value is within the pressure threshold range. Alternatively, if the pressure value is too high, it indicates excessive downward movement. In this case, the drive mechanism 14 moves up until the pressure value is within the pressure threshold range (or it can stop moving if the pressure value is within the pressure threshold range before moving to the designated position). This eliminates the need for operators to manually move the drive mechanism 14 for different types of workpieces each time. Momentum can be reset or measured, greatly improving work efficiency, versatility, and applicability. Secondly, it can also detect the cleaning effect. When the driving component 312 does not move the workpiece axially and the rotating mechanism 7 does not move the workpiece circumferentially: a. If the pressure value gradually decreases within the threshold range, it indicates that impurities still exist at that location; b. If the pressure value remains constant and continues to increase after inflation, it indicates that the location has been cleaned; if the pressure value increases and then decreases after inflation, c. if the decrease is significant, it indicates that impurities still exist at that location. If there is poor contact between the workpiece and the cleaning head 15 (possibly due to the cleaning part 16 removing the thick-section of the workpiece during cleaning, causing a large change in the distance between the cleaning part 16 and the workpiece), then inflate the air to bring the pressure value within the pressure threshold range; or if the decrease is small, it indicates that the workpiece is hard (a false stability occurs, requiring a certain time or rotation speed to remove the workpiece), then increase the rotation speed of the cleaning part 16 until the pressure value stabilizes, and then repeat step b to achieve self-detection of the cleaning effect.

[0049] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An online cleaning device for the outer surface of a workpiece, characterized in that: include: The frame serves as the main load-bearing structure; A lifting device, comprising a lifting mechanism and a support mechanism for supporting a workpiece, wherein the lifting mechanism is used to lift the workpiece on the support mechanism to a clamping height; A clamping and rotating device, comprising a clamping mechanism and a rotating mechanism, wherein the clamping mechanism is used to clamp the lifted workpiece, and the rotating mechanism is used to drive the clamped workpiece to rotate around its axis. A cleaning device includes a cleaning head having a driveable cleaning part, the driveable movement of the cleaning head causing the cleaning part to clean the outer surface of the workpiece; The clamping mechanism includes a main clamping mechanism, a secondary clamping mechanism, and a drive mechanism. The drive mechanism is used to adjust the distance between the main clamping mechanism and the secondary clamping mechanism. The main clamping mechanism is provided with an active rotating part, which can be driven to rotate the workpiece. The rotating mechanism is used to drive the active rotating part to rotate. The secondary clamping mechanism is provided with a driven rotating part. The cleaning device includes a second drive mechanism, which is used to drive the cleaning head to move in the vertical direction; The cleaning device also includes a connecting arm, which includes a fixed arm, a sliding arm, and a drive mechanism. The sliding arm is slidably fitted inside the fixed arm, and the cleaning head is disposed on the sliding arm. The drive mechanism is used to drive the sliding arm to move and adjust the overall length of the connecting arm. The driving mechanism includes a first driving component, a second driving component, and a third driving component. The first driving component is used to drive the main clamping mechanism to move, the second driving component is used to drive the secondary clamping mechanism to move, and the clamping rotation device also includes a sliding seat. The first driving component and the second driving component are disposed on the sliding seat, and the third driving component is used to drive the sliding seat to slide along the axial direction of the workpiece.

2. The online cleaning device for the outer surface of a workpiece according to claim 1, characterized in that: It also includes a control system, which is used to control the start and stop, speed and stroke of drive mechanism one, drive mechanism two, drive mechanism three, and rotating mechanism, as well as to detect the detection angle of the rotating mechanism.

3. The online cleaning device for the outer surface of a workpiece according to claim 2, characterized in that: The drive mechanism includes an elastic element and an electric cylinder. A length detection sensor is provided inside the connecting arm. The length detection sensor is used to detect the sliding distance of the sliding arm. The elastic element is used to drive the sliding arm to move away from the fixed arm. The electric cylinder is used to drive the sliding arm to slide back and forth. When cleaning the workpiece for the first time, the drive component resets, the elastic element drives the sliding arm to move outward so that the cleaning head presses against the outer surface of the workpiece, and drives the rotating mechanism to rotate. The length detection sensor transmits the sliding distance of the sliding arm to the control system. After the rotating mechanism rotates one revolution, the cleaning device resets, the drive component drives the workpiece to move axially, so that the undone part of the workpiece moves under the cleaning head. The cleaning steps are repeated until the axial outer surface of the workpiece is cleaned. When cleaning the same workpiece, the control system controls the electric cylinder stroke according to the stroke of the drive component, the rotation speed of the rotating mechanism and the corresponding length detection sensor.

4. The online cleaning device for the outer surface of a workpiece according to claim 3, characterized in that: An electromagnet is provided at the movable end of the electric cylinder, and the electromagnet is attracted to the sliding arm after being energized.

5. The online cleaning device for the outer surface of a workpiece according to claim 2, characterized in that: An airbag is provided between the connecting arm and the cleaning head. The airbag has multiple areas along the circumference of the cleaning part. The areas of the airbag can be inflated or inhaled to drive the cleaning head to rotate. A pressure detection sensor is provided inside the airbag to detect the pressure of the area. The control system controls the inflation and deflating of each area of ​​the airbag and receives the pressure value detected by the pressure detection sensor.

6. The online cleaning device for the outer surface of a workpiece according to claim 1, characterized in that: The support mechanism includes a support plate for supporting the bottom of the workpiece, and a lifting mechanism for driving the support plate to lift the workpiece to a specified height in a vertical direction.

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