Control method of grinding cleaning assembly and grinding cleaning device

Abstract

The present application provides a control method and a grinding cleaning device for a grinding cleaning assembly, which enables the rotating shaft and the first sleeve to be relatively fixed in the circumferential direction through a flat key, and relatively slidable in the axial direction, so that the rotating shaft can be telescoped relative to the first sleeve and the second sleeve, so that the grinding disc can be close to or away from the grinding cleaning station according to needs; the torque of the rotating shaft can also be transmitted to the first sleeve through the flat key, so that the first sleeve can rotate relative to the second sleeve; the second sleeve is used to be fixed on the external structure to achieve axial fixation of the first sleeve, thereby preventing the rotating shaft and the first sleeve from vibrating in the radial direction, so as to improve the rotation accuracy of the rotating shaft. Compared with the grinding cleaning mechanism using a ball spline shaft, the assembly structure of the rotating shaft, the flat key and the first sleeve in the present application is simpler, thereby simplifying the assembly process of the grinding cleaning assembly and improving the assembly efficiency.

Description

Technical Field

[0001] The present application belongs to the technical field of glass grinding and cleaning, and in particular, relates to a control method for a grinding and cleaning component and a grinding and cleaning device. Background Art

[0002] In the manufacturing process of LCD screens and OLCD screens, polarizer lamination is an essential process. Before laminating the polarizer, the glass sheet used as the laminating carrier needs to be cleaned to ensure the quality of the polarizer lamination. The equipment generally used is a grinding and cleaning machine. The grinding and cleaning machine completes the grinding action on the surface of the glass sheet through the grinding mechanism to achieve the effect of removing impurities on the surface of the glass sheet. The grinding and cleaning machine of the prior art is usually driven by a rolling spline pair. The spline sleeve and the spline shaft of the rolling spline pair can be relatively movable in the axial direction and can transmit torque in the circumferential direction through the ball bearings; the assembly process of the ball bearings between the spline sleeve and the spline shaft is relatively cumbersome, which reduces the overall assembly efficiency of the grinding mechanism. Summary of the invention

[0003] The embodiments of the present application provide a grinding cleaning assembly and a grinding cleaning device to solve the problem that the existing grinding cleaning assembly is difficult to assemble.

[0004] In a first aspect, an embodiment of the present application provides a grinding cleaning assembly, comprising:

[0005] A rotating shaft, wherein the outer peripheral wall of the rotating shaft is provided with a key groove;

[0006] A flat key, comprising a first matching portion and a second matching portion, wherein the first matching portion is installed in the key slot, and the second matching portion protrudes out of a notch of the key slot;

[0007] A first sleeve is sleeved on the rotating shaft, and an inner peripheral wall of the first sleeve is provided with a sliding groove extending in the axial direction, and the sliding groove and the second matching portion can be slidably matched in the axial direction and are relatively fixed in the circumferential direction;

[0008] A second sleeve, sleeved on the first sleeve;

[0009] A bearing is disposed between the first sleeve and the second sleeve, wherein the inner ring of the bearing is fixedly matched with the first sleeve, and the outer ring of the bearing is fixedly matched with the second sleeve;

[0010] A grinding disc is mounted on one end of the rotating shaft.

[0011] Optionally, the flat key extends along the axial direction of the rotating shaft, and the shape and size of the keyway are adapted to the flat key; the sliding groove runs through the end walls at both ends of the first sleeve.

[0012] Optionally, the ratio of the dimension of the first matching portion along the depth direction of the keyway to the dimension of the second matching portion along the depth direction of the keyway is 1 / 4 to 1 / 2.

[0013] Optionally, a gap is formed between a surface of the second matching portion facing away from the key slot and a bottom of the slide slot.

[0014] Optionally, a sliding rib is convexly provided on the side wall of the second matching portion, and the sliding rib has a convex arc surface on one side facing the groove wall of the sliding groove, and the sliding rib can be slidably abutted against the groove wall of the sliding groove.

[0015] Optionally, the flat key is provided with a through hole, and the through hole passes through the first matching portion and the second matching portion; the bottom of the keyway is provided with a fixing hole corresponding to the through hole, and the fixing hole is fixedly assembled with the through hole by a fastener.

[0016] Optionally, two axial ends of the first sleeve protrude from two axial ends of the second sleeve.

[0017] In a second aspect, an embodiment of the present application further provides a control method for a grinding cleaning assembly, wherein the grinding cleaning assembly includes a rotating shaft, a flat key, a first sleeve, a second sleeve, a bearing, a grinding disc, and a pressure sensor;

[0018] The outer peripheral wall of the rotating shaft is provided with a keyway, and the flat key includes a first matching portion and a second matching portion, the first matching portion is installed in the keyway, and the second matching portion protrudes from the notch of the keyway; the first sleeve is sleeved on the rotating shaft, and the inner peripheral wall of the first sleeve is provided with a sliding groove extending in the axial direction, and the sliding groove and the second matching portion can be slidably matched in the axial direction and are relatively fixed in the circumferential direction; the second sleeve is sleeved on the first sleeve; the bearing is provided between the first sleeve and the second sleeve, the inner ring of the bearing is fixedly matched with the first sleeve, and the outer ring of the bearing is fixedly matched with the second sleeve; the grinding disc is installed at one end of the rotating shaft;

[0019] The pressure sensor is installed between the second matching portion and the groove wall of the slide groove, and is electrically connected to the driving device of the grinding and cleaning assembly; the pressure sensor is used to detect the circumferential load on the flat key;

[0020] The control method of the grinding cleaning component includes:

[0021] Obtaining the current circumferential load of the flat key;

[0022] Obtain the current load difference between the current circumferential load and the preset circumferential load;

[0023] It is determined that the current load difference is greater than the preset difference, the operation of the grinding and cleaning component is stopped, and an adjustment request for the flat key is sent to the control terminal.

[0024] Optionally, the step of determining that the current load difference is greater than a preset difference, stopping the operation of the grinding and cleaning component, and sending an adjustment request for the flat key to the control terminal includes:

[0025] Determine that the current load difference is greater than the preset difference;

[0026] Stop working on the grinding cleaning components;

[0027] Compare the current circumferential load with the preset circumferential load;

[0028] Determining that the current circumferential load is less than the preset circumferential load, sending first adjustment information for increasing the circumferential load of the flat key to the control terminal;

[0029] It is determined that the current circumferential load is greater than the preset circumferential load, and second adjustment information for reducing the circumferential load of the flat key is sent to the control terminal.

[0030] In a third aspect, an embodiment of the present application further provides a grinding cleaning device, which includes the grinding cleaning component as described above, or the grinding cleaning component as described above and a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program implements the steps of the control method of the grinding cleaning component as described above when executed by the processor.

[0031] The grinding and cleaning assembly provided in the embodiment of the present application enables the rotating shaft and the first sleeve to be relatively fixed in the circumferential direction through a flat key, and to be relatively slidable in the axial direction, so that the rotating shaft can be telescoped relative to the first sleeve and the second sleeve, so that the grinding disc can be moved closer to or away from the grinding and cleaning station as needed; the torque of the rotating shaft can also be transmitted to the first sleeve through the flat key, so that the first sleeve can rotate relative to the second sleeve; the second sleeve is used to be fixed on the external structure to achieve axial fixation of the first sleeve, thereby preventing the rotating shaft and the first sleeve from vibrating in the radial direction, so as to improve the rotation accuracy of the rotating shaft.

[0032] Compared with the grinding and cleaning mechanism using a ball spline shaft, the assembly structure of the rotating shaft, the flat key and the first sleeve in the present application is simpler, thereby simplifying the assembly process of the grinding and cleaning component and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0034] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0035] Figure 1 A schematic diagram of the structure of the grinding and cleaning assembly provided in an embodiment of the present application.

[0036] Figure 2 A partial cross-sectional schematic diagram of the abrasive cleaning assembly provided in an embodiment of the present application.

[0037] Figure 3 A partial cross-sectional schematic diagram of an abrasive cleaning assembly provided in another embodiment of the present application.

[0038] Figure 4 A partial cross-sectional schematic diagram of an abrasive cleaning assembly provided in yet another embodiment of the present application.

[0039] Figure 5 This is an exploded view of the structure of the abrasive cleaning assembly provided in an embodiment of the present application.

[0040] Figure 6 A cross-sectional exploded view of the abrasive cleaning assembly provided in an embodiment of the present application.

[0041] Figure 7 A schematic flow chart of a control method for a grinding and cleaning assembly provided in an embodiment of the present application.

[0042] Figure 8 A flow chart of details of a method for controlling a grinding and cleaning component provided in an embodiment of the present application.

[0043] 10. Rotating shaft; 11. Keyway; 20. Flat key; 30. First sleeve; 31. Slide groove; 40. Second sleeve; 50. Bearing; 60. Grinding disc; 111. Fixing hole; 21. Through hole; 70. Pressure sensor. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] The embodiment of the present application provides a grinding cleaning assembly and a grinding cleaning device to solve the problems of low processing efficiency and unstable internal structure of the existing grinding cleaning assembly. It will be described below with reference to the accompanying drawings.

[0046] The abrasive cleaning assembly provided in the embodiment of the present application can be applied to an abrasive cleaning device. Figures 1 to 3 , Figure 1 A schematic diagram of the structure of the grinding and cleaning assembly provided in an embodiment of the present application. Figure 2 A partial cross-sectional schematic diagram of the abrasive cleaning assembly provided in an embodiment of the present application. Figure 3 A partial cross-sectional schematic diagram of a grinding and cleaning assembly provided in another embodiment of the present application. The grinding and cleaning assembly comprises: a rotating shaft 10, the outer peripheral wall of which is provided with a keyway 11; a flat key 20, comprising a first mating portion and a second mating portion, the first mating portion being mounted in the keyway 11, and the second mating portion protruding out of the notch of the keyway 11; a first sleeve 30, sleeved on the rotating shaft 10, the inner peripheral wall of the first sleeve 30 being provided with a slide groove 31 extending in the axial direction, the slide groove 31 and the second mating portion being slidably matched in the axial direction and relatively fixed in the circumferential direction; a second sleeve 40, sleeved on the first sleeve 30; a bearing 50, disposed between the first sleeve 30 and the second sleeve 40, the inner ring of the bearing 50 being fixedly matched with the first sleeve 30, and the outer ring of the bearing 50 being fixedly matched with the second sleeve 40; and a grinding disc 60, mounted on one end of the rotating shaft 10.

[0047] In this embodiment, specifically, the rotating shaft 10 is used to connect with the driving device of the grinding and cleaning device, and the driving device is connected to one end of the rotating shaft 10 away from the grinding disc 60, and the driving device can drive the rotating shaft 10 to rotate and move axially. The rotating shaft 10 will drive the grinding disc 60 to rotate together, and the grinding disc 60 will rotate along the surface of the glass substrate, and with the assistance of the cleaning agent, dust and other debris attached to the surface of the glass substrate can be removed. Since the radial dimension of the grinding disc 60 is larger than the radial dimension of the rotating shaft 10, when the grinding disc 60 is working, the shaft end connected to the grinding disc 60 will vibrate radially, affecting the grinding and cleaning effect of the grinding disc 60.

[0048] The second sleeve 40 is used to be fixed to the fixed frame of the grinding and cleaning device, and is rotatably matched with the first sleeve 30 through the bearing 50, and the torque can be transmitted between the first sleeve 30 and the rotating shaft 10 through the flat key 20. That is to say, the rotating shaft 10 will drive the first sleeve 30 to rotate relative to the second sleeve 40. Since the second sleeve 40 itself is fixed, the radial vibration of the rotating shaft 10 can be effectively absorbed and buffered by the second sleeve 40, thereby reducing the vibration generated by the grinding disc 60, so as to improve the rotation accuracy of the grinding disc 60 and thus improve the grinding and cleaning effect.

[0049] The flat key 20 and the slide groove 31 can be slidably matched, so that the rotating shaft 10 can make axial movement relative to the first sleeve 30, that is, it can be extended and retracted relative to the first sleeve 30 and the second sleeve 40. In the grinding and cleaning device, the first sleeve 30 and the second sleeve 40 are fixed in the axial direction, and the rotating shaft 10 can drive the grinding disc 60 to be extended and retracted relative to the first sleeve 30 and the second sleeve 40, so that the grinding disc 60 can be close to or away from the glass substrate in different grinding and cleaning stages to achieve grinding and cleaning work or avoid the glass substrate.

[0050] The number of the flat key 20 can be one or more; for example, the number of the flat keys 20 can be more than one, and the multiple flat keys 20 are arranged at intervals along the circumference of the rotating shaft 10, and the number and position of the keyway 11 and the slide groove 31 correspond to the flat keys 20; in this way, the position for transmitting torque between the rotating shaft 10 and the first sleeve 30 can be increased to improve the rotational stability of the first sleeve 30. The grinding and cleaning assembly provided in the embodiment of the present application enables the rotating shaft 10 and the first sleeve 30 to be relatively fixed in the circumferential direction through the flat key 20, and relatively slidable in the axial direction, so that the rotating shaft 10 can be telescopic relative to the first sleeve 30 and the second sleeve 40, so that the grinding disc 60 can be close to or away from the grinding and cleaning station according to needs; the torque of the rotating shaft 10 can also be transmitted to the first sleeve 30 through the flat key 20, so that the first sleeve 30 can rotate relative to the second sleeve 40; the second sleeve 40 is used to be fixed on the external structure to achieve the axial fixation of the first sleeve 30, so as to prevent the rotating shaft 10 and the first sleeve 30 from vibrating in the radial direction, so as to improve the rotation accuracy of the rotating shaft 10. Compared with the grinding and cleaning mechanism using a ball spline shaft, the assembly structure of the rotating shaft 10, the flat key 20 and the first sleeve 30 in the present application is simpler, so that the assembly process of the grinding and cleaning assembly can be simplified and the assembly efficiency can be improved.

[0051] The flat key 20 can be in a square shape or a long strip shape, and there is no limitation here, as long as the flat key 20 can slide with the slide groove 31. For example, please refer to Figure 5 , Figure 5 The structural exploded diagram of the grinding cleaning assembly provided in the embodiment of the present application. The flat key 20 extends along the axial direction of the rotating shaft 10, and the shape and size of the keyway 11 are adapted to the flat key 20; the slide groove 31 runs through the end walls at both ends of the first sleeve 30. The flat key 20 is in the shape of an elongated strip, which can increase the abutment area with the slide groove 31, thereby further improving the stability of the torque transmitted between the rotating shaft 10 and the first sleeve 30. In addition, the relative limit displacement of the rotating shaft 10 in the axial direction can also be increased; it can be understood that when the rotating shaft 10 moves to the limit position in the axial direction relative to the first sleeve 30, the flat key 20 is always partially located in the slide groove 31.

[0052] Exemplarily, the ratio of the dimension of the first matching portion along the depth direction of the keyway 11 to the dimension of the second matching portion along the depth direction of the keyway 11 is 1 / 4 to 1 / 2, for example, it can be 1 / 4, 1 / 3, 1 / 2. The dimension of the flat key 20 along the depth direction of the keyway 11 can be understood as the thickness of the flat key 20, the first matching portion is the part of the flat key 20 in the keyway 11, and the second matching portion is the part of the flat key 20 in the slide groove 31; setting the thickness ratio of the first matching portion to the second matching portion to 1 / 4 to 1 / 2 can not only ensure the matching stability of the flat key 20 and the slide groove 31, but also reasonably control the groove depth of the slide groove 31 to ensure the overall structural stability of the first sleeve 30.

[0053] Each side wall of the second matching portion may abut against the groove wall of the sliding groove 31, or a gap may be formed between part of the side wall and the groove wall of the sliding groove 31. For example, please refer to Figure 4 , Figure 4 A partial cross-sectional schematic diagram of a grinding and cleaning assembly provided in another embodiment of the present application. A gap is formed between the side of the second mating portion facing away from the keyway 11 and the bottom of the slideway 31, and the gap will not affect the push of the flat key 20 on the wall of the slideway 31, that is, it will not affect the transmission of torque between the rotating shaft 10 and the first sleeve 30, and can reduce the friction area between the flat key 20 and the bottom of the slideway 31, thereby reducing the friction force on the rotating shaft 10 during axial movement, so that the axial movement process of the rotating shaft 10 is smoother.

[0054] The side wall of the second matching portion can be an arc surface or a plane surface. Exemplarily, the side wall of the second matching portion is convexly provided with a sliding rib (not shown), and the sliding rib is convexly arc-shaped on one side facing the groove wall of the slide groove 31, and the sliding rib can slide against the groove wall of the slide groove 31. The convex arc surface can reduce the contact area between the flat key 20 and the groove wall of the slide groove 31, thereby reducing the sliding friction between the flat key 20 and the groove wall of the slide groove 31, so as to reduce the resistance encountered by the shaft 10 during the axial movement, and further improve the stability of the axial movement of the shaft 10.

[0055] The flat key 20 can be installed in the key slot 11 by a fixed fit, or by other fixing methods. Figure 5 and Figure 6 As shown, Figure 6The cross-sectional exploded view of the grinding cleaning assembly provided in the embodiment of the present application. The flat key 20 is provided with a through hole 21, and the through hole 21 passes through the first matching part and the second matching part; the bottom of the keyway 11 is provided with a fixing hole 111 corresponding to the through hole 21, and the fixing hole 111 is fixedly assembled with the through hole 21 by a fastener. In combination with the above-mentioned embodiment in which the flat key 20 extends axially, the number of the fixing holes 111 can be two, and the two fixing holes 111 are respectively provided at both ends of the length direction of the flat key 20, and the number of the through holes 21 corresponds to the fixing holes 111, so that the fixed position of the flat key 20 and the keyway 11 can be increased to improve the installation stability of the flat key 20. The flat key 20 can also be provided with a positioning hole, and the positioning hole is provided in the middle of the length direction of the flat key 20; the bottom of the keyway 11 can be provided with a positioning pin, and before installing the fastener, the positioning pin is first passed through the positioning hole to realize the positioning of the flat key 20 to avoid position deviation during the fastening process.

[0056] For example, Figure 2 and Figure 3 As shown, the two ends of the first sleeve 30 in the axial direction protrude from the two ends of the second sleeve 40 in the axial direction. The second sleeve 40 is fixed relative to the rotating shaft 10, and the first sleeve 30 can rotate synchronously with the rotating shaft 10 and the grinding disc 60. Therefore, even if the rotating shaft 10 rotates in the axial direction to make the grinding disc 60 abut against the first sleeve 30, it will not affect the rotation of the grinding disc 60, thereby improving the working stability of the grinding and cleaning assembly.

[0057] The grinding and cleaning assembly usually uses water as a cleaning medium to grind and clean the glass substrate, so the grinding and cleaning assembly works in a humid environment. If water vapor enters the first sleeve 30 and causes the flat key 20 to rust, it may affect the matching accuracy of the flat key 20 and the slide groove 31, thereby affecting the torque transmission process between the rotating shaft 10 and the first sleeve 30. If the gap between the flat key 20 and the groove wall of the slide groove 31 is too large, the first sleeve 30 cannot be completely synchronized with the rotating shaft 10 during the rotation of the rotating shaft 10, causing the first sleeve 30 to shake, affecting the rotation accuracy and grinding effect of the grinding disc 60.

[0058] To solve the above problems, the grinding and cleaning assembly provided in the embodiment of the present application also includes a first sealing ring, which is installed at one end of the first sleeve 30 close to the grinding disc 60, and the first sleeve 30 and the wall of the rotating shaft 10 are sealed together through the first sealing ring.

[0059] The end of the first sleeve 30 close to the grinding disc 60 is more easily entered by water vapor splashed by the grinding disc 60. Therefore, a first sealing ring is arranged between the inner circumferential wall of the first sleeve 30 and the outer circumferential wall of the rotating shaft 10, which can effectively prevent water vapor from entering the first sleeve 30 and corroding the flat key 20, so as to improve the sealing and protection effect of the flat key 20, thereby ensuring the internal structural stability of the grinding and cleaning assembly and extending the service life of the grinding and cleaning assembly.

[0060] Exemplarily, the first sealing ring is a lip-shaped sealing ring, such as a Y-shaped sealing ring or a V-shaped sealing ring. The lip-shaped sealing ring can increase the contact area with the peripheral wall of the rotating shaft 10, thereby improving the sealing effect. In addition, the lip-shaped sealing ring can also be elastically deformed with the rotation or axial movement of the rotating shaft 10, thereby reducing the impact on the rotation or axial movement of the rotating shaft 10, and ensuring the sealing effect between the rotating shaft 10 and the first sleeve 30 during the movement.

[0061] The first sealing ring can be directly sandwiched between the inner circumferential wall of the first sleeve 30 and the outer circumferential wall of the rotating shaft 10, or can be fixed on the first sleeve 30 by a limiting structure. Exemplarily, a sealing groove is provided on the inner circumferential wall of the first sleeve 30, and the sealing groove extends along the circumferential direction of the rotating shaft 10, and the first sealing ring is partially embedded in the sealing groove. The sealing groove can realize the relative fixation of the first sealing ring and the first sleeve 30, so that when the rotating shaft 10 moves axially relative to the first sleeve 30, the first sealing ring can be prevented from being brought out of the first sleeve 30 by the rotating shaft 10 or being displaced in the first sleeve 30, thereby improving the installation stability of the first sealing ring.

[0062] Exemplarily, a boss is formed on the peripheral wall of the rotating shaft 10 near one end of the grinding disc 60, and the boss extends along the circumference of the rotating shaft 10. The grinding disc 60 is connected to the side of the boss away from the first sleeve 30. An active area is formed between the boss and the flat key 20, and one end of the first sleeve 30 installed with the first sealing ring can move axially relative to the rotating shaft 10 in the active area. The rotating shaft 10 can move axially until the boss abuts against the first sleeve 30, or the flat key 20 abuts against the first sealing ring, so that the boss and the first sealing ring can jointly limit the axial displacement of the rotating shaft 10; in this way, the limiting structure of the rotating shaft 10 can be simplified.

[0063] Exemplarily, the grinding disc 60 is provided with a mounting hole, and the end of the rotating shaft 10 is fixedly matched with the mounting hole; the grinding and cleaning assembly also includes a second sealing ring, which is installed between the grinding disc 60 and the boss and is arranged around the mounting hole.

[0064] A mounting groove is provided on one side of the grinding disc 60 facing the boss, and the mounting groove is located on the outer peripheral side of the second sealing ring. An assembly groove is provided on one side of the boss facing the grinding disc 60, and the position of the assembly groove corresponds to the position of the mounting groove. The assembly groove and the mounting groove can be fixedly matched by a fixing pin to achieve relative fixation of the grinding disc 60 and the boss. The second sealing ring can prevent water vapor from entering the mounting groove or the assembly groove from the gap between the mounting hole and the rotating shaft 10, thereby preventing the fixing pin from getting damp and rusting, so as to ensure the assembly stability of the grinding disc 60 and the boss.

[0065] Exemplarily, the grinding and cleaning assembly further includes a third sealing ring, which is mounted on one end of the second sleeve 40 close to the grinding disc 60, and the second sleeve 40 and the first sleeve 30 are sealed together through the third sealing ring. The grinding and cleaning assembly further includes a fourth sealing ring, which is mounted on one end of the second sleeve 40 away from the grinding disc 60, and the second sleeve 40 and the first sleeve 30 are sealed together through the fourth sealing ring. The third sealing ring and the fourth sealing ring can prevent water vapor from entering the interior of the second sleeve 40, thereby preventing the bearing 50 from getting damp and rusting, so as to improve the working stability of the bearing 50.

[0066] Specifically, the third sealing ring can be set as a lip-shaped sealing ring to increase the contact area with the first sleeve 30, thereby improving the sealing effect. The grinding and cleaning assembly can also include two buckle rings installed on the outer peripheral wall of the first sleeve 30, and the third sealing ring is limited between the two buckle rings, thereby improving the installation stability of the third sealing ring.

[0067] In combination with the above-mentioned embodiment in which both ends of the first sleeve 30 protrude from both ends of the second sleeve 40, the inner wall of the second sleeve 40 away from the grinding disc 60 can form a sealing step, and the outer wall of the first sleeve 30 away from the grinding disc 60 forms a limiting step, and the fourth sealing ring is installed between the sealing step and the limiting step, thereby improving the installation stability of the fourth sealing ring.

[0068] The embodiment of the present application also proposes a grinding cleaning device, which includes a grinding cleaning component. The specific structure of the grinding cleaning component refers to the above embodiment. Since the grinding cleaning device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0069] It should be noted that when the flat key 20 slides relative to the slide groove 31, the friction between the flat key 20 and the slide groove 31 is a sliding friction. When the friction coefficient of the contact surface remains unchanged, the magnitude of the sliding friction depends on the tightness of the fit between the flat key 20 and the slide groove 31, that is, the contact force between the flat key 20 and the slide groove 31. If the contact force is too large, the friction generated by the flat key 20 and the slide groove 31 is too large, which will cause a greater obstruction to the axial movement of the rotating shaft 10. If the contact force is too small, during the rotation of the rotating shaft 10 and the first sleeve 30, the first sleeve 30 and the rotating shaft 10 cannot be completely synchronized, and a speed difference is likely to occur, causing the first sleeve 30 to wobble, affecting the rotation stability of the grinding disc 60. Therefore, the tightness of the fit between the flat key 20 and the slide groove 31 should be reasonably controlled, that is, the contact force between the flat key 20 and the slide groove 31 is adjusted by adjusting the installation state of the flat key 20.

[0070] For example, see Figure 4 The grinding and cleaning assembly also includes a pressure sensor 70, which is installed between the second matching portion and the groove wall of the slide groove 31 and is electrically connected to the driving device of the grinding and cleaning assembly; the pressure sensor 70 is used to detect the circumferential load on the flat key 20.

[0071] See also Figure 7 , Figure 7 A flow chart of a control method of a grinding cleaning component provided in an embodiment of the present application. The present application also provides a control method of a grinding cleaning component, the control method of the grinding cleaning component comprising:

[0072] S100, obtaining the current circumferential load of the flat key 20;

[0073] S200, obtaining a current load difference between a current circumferential load and a preset circumferential load;

[0074] S300 , determining that the current load difference is greater than a preset difference, stopping the operation of the grinding and cleaning component, and sending an adjustment request for the flat key 20 to the control terminal.

[0075] The pressure sensor 70 detects the contact force between the flat key 20 and the slide groove 31, that is, the current circumferential load of the flat key 20. If the current circumferential load is greater than or less than the preset circumferential load, a current load difference will be generated between the current circumferential load and the preset circumferential load. If the current load difference is greater than the preset difference, it means that the contact force between the flat key 20 and the slide groove 31 is too large or too small, the shaft 10 has axial motion problems or the grinding disc 60 has unstable rotation. The load difference can be set according to the actual weight or material of the flat key 20. For example, the load difference can be one unit of force or two units of force.

[0076] If the current load difference is greater than the preset difference, it means that there is a problem with the size or installation state of the flat key 20, and it needs to be adjusted in time; the adjustment method is to first stop the work of the grinding and cleaning component, and then send an adjustment request for the flat key 20 to the control terminal. After receiving the adjustment request, the control terminal can notify the user in time, and the user can adjust the flat key 20 according to the specific situation, such as replacing a flat key 20 with a more suitable specification, or taking out the flat key 20 for simple processing and then reinstalling it. Therefore, through this control method, the installation state of the flat key 20 and the slide groove 31 can be adjusted in time, so that the flat key 20 and the slide groove 31 can achieve the most suitable fit tightness, thereby ensuring the axial activity smoothness of the rotating shaft 10 and the synchronous rotation stability of the first sleeve 30 and the rotating shaft 10.

[0077] For details, please refer to Figure 8 , Figure 8 The process details of the control method of the grinding cleaning component provided in the embodiment of the present application are as follows. The steps of determining that the current load difference is greater than the preset difference, stopping the operation of the grinding cleaning component, and sending an adjustment request for the flat key 20 to the control terminal include:

[0078] S310, determining that the current load difference is greater than a preset difference;

[0079] S320, stopping the operation of the grinding and cleaning component;

[0080] S330, comparing the current circumferential load with the preset circumferential load;

[0081] S340, determining that the current circumferential load is less than the preset circumferential load, and sending first adjustment information for increasing the circumferential load of the flat key 20 to the control terminal;

[0082] S350, determining that the current circumferential load is greater than the preset circumferential load, and sending second adjustment information for reducing the circumferential load of the flat key 20 to the control terminal.

[0083] In step S310, if it is determined that the current load difference is greater than the preset difference, it means that the flat key 20 does need to be adjusted, but at this time it is still impossible to determine whether the contact force between the flat key 20 and the slide groove 31 is too large or too small. If each attempt is made, it will take too long and the steps will be complicated, which will affect the adjustment efficiency of the flat key 20. Therefore, if it is determined that the current load difference is greater than the preset difference, the controller will first stop the grinding and cleaning assembly in time to avoid damaging the glass substrate; then the controller will compare the current circumferential load with the preset circumferential load. If it is determined that the current circumferential load is less than the preset circumferential load, it means that the contact force between the flat key 20 and the slide groove 31 is too small, and the circumferential load of the flat key 20 should be increased, such as replacing a slightly larger flat key 20 or adding a contact layer to the flat key 20. The specific method can be selected by the user; the control terminal only needs to send the first adjustment information corresponding to the prompt, such as controlling the indicator light for indicating the increase of the circumferential load of the flat key 20 to light up. If it is determined that the current circumferential load is greater than the preset circumferential load, it means that the contact force between the flat key 20 and the slide groove 31 is too large, and the circumferential load of the flat key 20 should be reduced, for example, by replacing the flat key 20 with a slightly smaller size, or grinding the flat key 20. The specific method can be selected by the user; the control terminal only needs to send a second adjustment information corresponding to the prompt, such as controlling the indicator light indicating the reduction of the circumferential load of the flat key 20.

[0084] The embodiment of the present application also provides a grinding cleaning device, which includes a grinding cleaning component, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of a control method of the grinding cleaning component when executed by the processor. The specific structure of the grinding cleaning component and the specific steps of the control method of the grinding cleaning component refer to the above embodiment. Since the present grinding cleaning device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0085] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0086] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. The above is a detailed introduction to the grinding and cleaning components provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and scope of application. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A control method for a grinding and cleaning assembly, the grinding and cleaning assembly comprising a rotating shaft, a flat key, a first sleeve, a second sleeve, a bearing, a grinding disc and a pressure sensor; The outer peripheral wall of the rotating shaft is provided with a keyway, and the flat key includes a first matching portion and a second matching portion, the first matching portion is installed in the keyway, and the second matching portion protrudes from the notch of the keyway; the first sleeve is sleeved on the rotating shaft, and the inner peripheral wall of the first sleeve is provided with a sliding groove extending in the axial direction, and the sliding groove and the second matching portion can be slidably matched in the axial direction and are relatively fixed in the circumferential direction; the second sleeve is sleeved on the first sleeve; the bearing is provided between the first sleeve and the second sleeve, the inner ring of the bearing is fixedly matched with the first sleeve, and the outer ring of the bearing is fixedly matched with the second sleeve; the grinding disc is installed at one end of the rotating shaft; The pressure sensor is installed between the second matching portion and the groove wall of the slide groove, and is electrically connected to the driving device of the grinding and cleaning assembly; the pressure sensor is used to detect the circumferential load on the flat key; It is characterized in that The grinding and cleaning assembly further comprises a first sealing ring, which is mounted on one end of the first sleeve close to the grinding disc, and the first sleeve and the rotating shaft are sealed together through the first sealing ring; The inner circumferential wall of the first sleeve is provided with a sealing groove, the sealing groove extends along the circumferential direction of the rotating shaft, and the first sealing ring is partially embedded in the sealing groove; A boss is formed on the peripheral wall of the rotating shaft near one end of the grinding disc, the boss extends along the circumference of the rotating shaft, and the grinding disc is connected to the side of the boss away from the first sleeve; a movable area is formed between the boss and the flat key, and one end of the first sleeve equipped with the first sealing ring can move axially relative to the rotating shaft in the movable area; The control method of the grinding cleaning component includes: Obtaining the current circumferential load of the flat key; Obtain the current load difference between the current circumferential load and the preset circumferential load; Determining that the current load difference is greater than a preset difference, stopping the operation of the grinding and cleaning component, and sending an adjustment request for the flat key to the control terminal; The step of determining that the current load difference is greater than the preset difference, stopping the operation of the grinding and cleaning component, and sending an adjustment request for the flat key to the control terminal includes: Determine that the current load difference is greater than the preset difference; Stop working on the grinding cleaning components; Compare the current circumferential load with the preset circumferential load; Determining that the current circumferential load is less than the preset circumferential load, sending first adjustment information for increasing the circumferential load of the flat key to the control terminal; It is determined that the current circumferential load is greater than the preset circumferential load, and second adjustment information for reducing the circumferential load of the flat key is sent to the control terminal.

2. The control method of the grinding cleaning assembly according to claim 1, It is characterized in that The flat key extends along the axial direction of the rotating shaft, and the shape and size of the keyway are adapted to the flat key; the sliding groove runs through the end walls at both ends of the first sleeve.

3. The control method of the grinding cleaning assembly according to claim 1, It is characterized in that A ratio of a dimension of the first mating portion along a depth direction of the keyway to a dimension of the second mating portion along the depth direction of the keyway is 1 / 4 to 1 / 2.

4. The control method of the grinding cleaning assembly according to claim 1, It is characterized in that A gap is formed between a surface of the second matching portion facing away from the key groove and a groove bottom of the slide groove.

5. The control method of the grinding cleaning assembly according to claim 1, It is characterized in that The side wall of the second matching portion is convexly provided with a sliding rib, and the sliding rib has a convex arc surface facing the groove wall of the sliding groove, and the sliding rib and the groove wall of the sliding groove can be slidably abutted against each other.

6. The control method of the grinding cleaning assembly according to claim 1, It is characterized in that The flat key is provided with a through hole, and the through hole passes through the first matching portion and the second matching portion; the bottom of the key slot is provided with a fixing hole corresponding to the through hole, and the fixing hole is fixedly assembled with the through hole by a fastener.

7. The control method of the abrasive cleaning assembly according to claim 1, It is characterized in that Two ends of the first sleeve in the axial direction protrude from two ends of the second sleeve in the axial direction.

8. A grinding cleaning device, It is characterized in that include: A grinding cleaning component, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the method for controlling the grinding cleaning component as described in any one of claims 1 to 7 are implemented.

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