A shaft coating method and system

Abstract

The application relates to the technical field of medium coating, in particular to a shaft coating method and system. The shaft coating method comprises the following steps: driving a shaft assembly to rotate around a set axis; moving a coating unit to abut against a to-be-coated outer peripheral wall of the shaft assembly; wherein the maximum size of the part of the coating unit abutting against the to-be-coated outer peripheral wall along the set axis is smaller than the maximum size of the to-be-coated outer peripheral wall along the set axis; forming a coating layer by the region of the shaft assembly abutting against the coating unit; moving the coating unit to a first state along a first direction; wherein the first direction is the direction from the to-be-coated outer peripheral wall to the to-be-coated end part of the shaft assembly; the to-be-coated outer peripheral wall is arranged adjacent to the to-be-coated end part; the coating unit is a multi-layer sheet structure arranged along the set axis in sequence; the first state comprises that the coating unit of part of the layers abuts against the to-be-coated end part and the coating unit of part of the layers abuts against the to-be-coated outer peripheral wall. Thus, the problem of improving the working efficiency of coating medium on the shaft assembly is solved.

Description

Technical Field

[0001] This invention relates to the field of media coating technology, and more specifically, to a shaft coating method and system. Background Technology

[0002] In traditional mechanical fields, shafts are a common mechanical structure. Coating the shaft ends with a fluid medium is an important process after machining. This coating prevents the shaft surface from rusting due to direct contact with the outside environment, thus preventing rust from affecting subsequent assembly. The shaft coating method involves using a brush to coat the shaft ends and their outer peripheral walls with a fluid medium, forming a diaphragm that isolates the shaft ends from direct contact with the outside environment.

[0003] Because it is necessary to coat the shaft end and outer peripheral wall with a fluid medium, such as a friction reducer or lubricant, existing shaft coating methods use two brushes to coat the shaft end and the outer peripheral surface of the shaft end with the fluid medium respectively. However, this method requires performing the coating action in steps: first, the outer peripheral surface of the shaft end is coated with the fluid medium, and then the shaft end face is coated with another brush. This process is cumbersome and affects processing efficiency. Therefore, improving the efficiency of coating shaft assemblies with fluid media has become an urgent technical problem to be solved in this field. Summary of the Invention

[0004] To address the issue of improving the working efficiency of coating media on shaft assemblies, this invention provides a shaft coating method and system.

[0005] In a first aspect, the present invention provides a shaft coating method, comprising:

[0006] The drive shaft assembly rotates around a set axis;

[0007] The coating unit moves to abut against the outer peripheral wall of the shaft assembly to be coated; wherein, the maximum dimension of the portion of the coating unit that abuts against the outer peripheral wall to be coated along the set axis is smaller than the maximum dimension of the outer peripheral wall to be coated along the set axis; a coating is formed in the area of ​​the shaft assembly that abuts the coating unit.

[0008] The coating unit moves to a first state along a first direction; wherein, the first direction is the direction from the outer peripheral wall to be coated to the end of the shaft assembly to be coated; the outer peripheral wall to be coated and the end to be coated are arranged adjacent to each other; the coating unit is a multi-layer sheet structure arranged sequentially along the set axis; the first state includes the coating unit of a partial layer abutting the end to be coated, and the coating unit of a partial layer abutting the outer peripheral wall to be coated.

[0009] Optionally, the coating unit moving to the first state along the first direction includes:

[0010] Based on the coating unit moving to abut against the outer peripheral wall to be coated, the coating unit moves to a second state along the first direction at a first speed; wherein, the second state includes the area on the outer peripheral wall to be coated that has contacted the coating unit within a first area range;

[0011] The coating unit moves to the first state along the first direction at a second speed; wherein the first speed is slower than the second speed; the first state also includes the area on the outer peripheral wall to be coated that has been in contact with the coating unit within a second area range.

[0012] Optionally, the first state further includes the second brush of the coating unit abutting against the outer peripheral wall to be coated, and the first brush of the coating unit abutting against the end to be coated; wherein the second brush undergoes a first deformation, and the first brush undergoes a second deformation; the first deformation is greater than the second deformation, the coating unit includes the first brush and the second brush, and the second brush and the first brush are arranged sequentially along the first direction; the sum of the maximum dimensions of the portions of the first brush and the second brush used to abut against the shaft assembly along the set axis is less than the maximum dimension of the outer peripheral wall to be coated along the set axis.

[0013] Optionally, the first state further includes L1 < L2; where L1 is the dimension of the first brush abutting the end to be coated along the second direction; L2 is the maximum dimension of the second brush abutting the outer peripheral wall to be coated along the set axis; the second direction is the direction of the second brush to the set axis, and the second direction is parallel to the radial direction of the shaft assembly; D > 2 × R; D is the dimension of the outer peripheral wall to be coated along the set axis, and R is the radius of the end to be coated.

[0014] Optionally, the shaft coating method further includes:

[0015] Based on the coating unit moving along the first direction to the first state, the coating unit stops moving along the first direction and the coating unit moves along the second direction to the third state; wherein, the third state includes the area on the end to be coated that has been in contact with the first brush being greater than or equal to a first area threshold, L1 < R.

[0016] Optionally, during the process of the coating unit moving to abut against the outer peripheral wall of the shaft assembly, at least a portion of the coating unit deforms circumferentially along the outer peripheral wall to be coated; wherein, the coating assembly includes the coating unit and a bonding groove, the bonding groove penetrating the coating unit along the direction from the coating unit to the shaft assembly.

[0017] Optionally, the shaft coating method further includes:

[0018] Based on the rotation of the drive shaft assembly around a set axis, the supply unit outputs a fluid medium to the top of the coating unit; wherein, the coating assembly includes the coating unit and the supply unit.

[0019] In a second aspect, the present invention provides a shaft coating system applicable to any optional shaft coating method in the first aspect, the shaft coating system comprising:

[0020] Shaft assembly;

[0021] A rotating component capable of driving the shaft assembly to rotate about a predetermined axis;

[0022] A coating unit, wherein the coating unit is a multi-layer sheet structure arranged sequentially along the set axis; at least a portion of the coating unit is an elastomer; a coating is formed on the area of ​​the shaft assembly that abuts the coating unit; the maximum dimension of the portion of the coating unit that abuts the shaft assembly along the set axis is smaller than the maximum dimension of the outer peripheral wall of the shaft assembly to be coated along the set axis;

[0023] The working states of the shaft coating system include the rotating component driving the shaft assembly to rotate around the set axis, the coating unit moving to abut against the outer peripheral wall to be coated, and the coating unit moving to a first state along a first direction; wherein, the first direction is the direction from the outer peripheral wall to be coated to the end of the shaft assembly to be coated; the first state is that part of the coating unit abuts against the end to be coated, and part of the coating unit abuts against the outer peripheral wall to be coated.

[0024] Optionally, the coating unit includes a first brush and a second brush, the second brush and the first brush being arranged sequentially along the first direction; L1 is the dimension of the first brush abutting the end to be coated along the second direction, and L2 is the maximum dimension of the second brush abutting the outer peripheral wall to be coated along the set axis; the second direction is the direction from the second brush to the set axis, and the second direction is parallel to the radial direction of the shaft assembly; D > 2 × R; D is the dimension of the outer peripheral wall to be coated along the set axis, and R is the radius of the end to be coated.

[0025] Optionally, the coating unit further includes an elastic sheet; the elastic sheet is at least connected to the first brush; the stiffness of the elastic sheet is greater than the stiffness of the first brush and the second brush, respectively.

[0026] To address the problem of improving the working efficiency of shaft assembly coated with fluid media, this invention has the following advantages:

[0027] By rotating the drive shaft assembly around a set axis and moving the coating unit to abut against the outer peripheral wall of the shaft assembly to be coated, the maximum dimension of the coating unit along the set axis is smaller than the maximum dimension of the outer peripheral wall to be coated along the set axis, achieving localized coating of the outer peripheral wall of the shaft assembly and forming a coating in the abutment area. When the coating unit moves to a first state along a first direction, based on the fact that the coating unit is a multi-layered sheet structure arranged sequentially along the set axis, some layers of the coating unit abut against the end to be coated, while the remaining layers abut against the outer peripheral wall to be coated, thus simultaneously completing the coating formation on the outer peripheral wall and the end to be coated in a single continuous movement. This process eliminates the need to change coating tools or perform coating actions in steps, reducing operation steps and thereby improving the processing efficiency of coating fluid media onto shaft assemblies. Attached Figure Description

[0028] Figure 1 A schematic flowchart of an embodiment of shaft coating method is shown;

[0029] Figure 2 A schematic diagram of an embodiment of a shaft coating system is shown;

[0030] Figure 3 A partial view A of an embodiment of an axis coating system is shown;

[0031] Figure 4 A front view of an embodiment of an axis coating system is shown;

[0032] Figure 5 A three-dimensional schematic diagram of a coating unit in an embodiment of an shaft coating system is shown;

[0033] Figure 6 Another perspective schematic diagram of a coating unit in an embodiment of an axial coating system is shown.

[0034] Reference numerals: 10, rotating assembly; 11, supporting unit; 111, supporting roller; 112, frame; 12, rotating unit; 121, rotating wheel; 122, drive unit; 20, coating assembly; 21, storage unit; 22, supply unit; 23, coating unit; 231, first brush; 232, second brush; 24, bonding groove; 25, drive unit; 30, shaft assembly. Detailed Implementation

[0035] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0036] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0037] In methods for coating shaft ends with a fluid medium, two brushes are typically used to coat the shaft end and its outer peripheral wall with the fluid medium, respectively. After solidification on the shaft, the fluid medium forms an anti-friction coating or a lubricating coating, thus protecting the shaft end and its outer peripheral wall. However, this method cannot simultaneously coat the shaft end and its outer peripheral wall during the coating process, requiring the switching of the two brushes, resulting in low efficiency in coating the shaft end. Therefore, improving the efficiency of coating shaft assemblies with a fluid medium has become a pressing technical problem to be solved in this field.

[0038] Example 1:

[0039] A shaft coating system applied to a shaft coating method includes a shaft assembly 30; a rotating assembly 10, which can drive the shaft assembly 30 to rotate about a set axis; a coating unit 23, which is a multi-layer sheet structure arranged sequentially along the set axis; at least a portion of the coating unit 23 is an elastomer; and a coating is formed on the area of ​​the shaft assembly 30 that abuts the coating unit 23.

[0040] This embodiment discloses a shaft coating method, such as Figure 1 As shown, the shaft coating method includes steps S10-S30:

[0041] Step S10: Drive shaft assembly 30 rotates around a set axis; wherein, the set axis refers to the central axis of shaft assembly 30.

[0042] In step S20, the coating unit 23 moves to abut against the outer peripheral wall of the shaft assembly 30 to be coated; wherein, the maximum dimension of the portion of the coating unit 23 that abuts against the outer peripheral wall to be coated along the set axis is smaller than the maximum dimension of the outer peripheral wall to be coated along the set axis; the area of ​​the shaft assembly 30 that abuts against the coating unit 23 forms a coating.

[0043] Specifically, the portion of the coating unit 23 that abuts against the outer peripheral wall to be coated is smaller than the size of the outer peripheral wall to be coated, so that the brush used by the coating unit 23 is smaller than the shaft assembly 30, thereby allowing the coating unit 23 to adapt to more models of shaft assemblies 30. The outer peripheral wall to be coated can be the entire outer peripheral wall or a partial outer peripheral wall, depending on the actual application. The coating unit 23 coats the outer peripheral wall to be coated with a fluid medium, so that the area of ​​the outer peripheral wall to be coated that has been in contact with the coating unit 23 forms a coating, thereby isolating the outer peripheral wall to be coated from the outside world, thereby preventing the outer peripheral wall to be coated from rusting and affecting the subsequent assembly of the shaft. The fluid medium adhered to the coating unit 23 can be a friction reducer or a lubricating oil. For example, the coating can be a friction reducer coating or a lubricating oil film.

[0044] Step S30, the coating unit 23 moves to a first state along a first direction; wherein, the first direction is the direction from the outer peripheral wall to be coated to the end of the shaft assembly 30 to be coated (i.e., as shown in the figure). Figure 2 (shown in the X direction); the outer peripheral wall to be coated and the end to be coated are adjacent to each other; the coating unit 23 is a multi-layer sheet structure arranged sequentially along a set axis; the first state includes the coating unit 23 of a partial layer abutting the end to be coated, and the coating unit 23 of a partial layer abutting the outer peripheral wall to be coated.

[0045] Specifically, in existing technologies, two different brushes are typically used to coat the shaft end and the outer peripheral wall of the shaft with a fluid medium, respectively. During the coating process, one brush is used to coat the outer peripheral wall of the shaft end first, and then the other brush is used to coat the shaft end. This method requires the use of different brushes and the need to change brushes during the coating process, resulting in low efficiency in coating the shaft assembly 30 with the fluid medium. In this invention, a multi-layered sheet-like brush is used to simultaneously coat the end to be coated and the outer peripheral wall to be coated, thereby improving the efficiency of coating the shaft assembly 30 with the fluid medium.

[0046] Furthermore, step S30 includes steps S31-S32: each step will be described in detail below, and steps S10, S20, S31 and S32 are executed in sequence.

[0047] Step S31: Based on the coating unit 23 moving to the outer peripheral wall to be coated, the coating unit 23 moves to the second state along the first direction at a first speed; wherein, the second state includes the area on the outer peripheral wall to be coated that has been in contact with the coating unit 23 within a first area range;

[0048] Specifically, the first area range is preset to be 60% to 70% of the area of ​​the outer peripheral wall to be coated.

[0049] In step S32, the coating unit 23 moves to a first state along a first direction at a second speed; wherein the first speed is slower than the second speed; the first state also includes the area on the outer peripheral wall to be coated that has been in contact with the coating unit 23 within a second area range.

[0050] For details, please refer to Figure 2 The second area range is preset to be 80% to 100% of the area of ​​the outer peripheral wall to be coated. The first speed is slower than the second speed. When the coating unit 23 coats the outer peripheral wall to be coated at the first speed, the fluid medium on the coating unit 23 is more firmly adhered to the outer peripheral wall to be coated. Since the coating unit 23 simultaneously abuts against the outer peripheral wall to be coated and the end to be coated in the first state, the coating unit 23 will also abut against the outer peripheral wall to be coated during the process of moving from the second state to the first state. Therefore, the time taken from the second state to the first state is shortened, thereby improving the working efficiency of coating the shaft assembly 30 with fluid medium.

[0051] Further, please refer to Figure 2 and Figure 5The first state also includes the second brush 232 of the coating unit 23 abutting against the outer peripheral wall to be coated, and the first brush 231 of the coating unit 23 abutting against the end to be coated; wherein, the second brush 232 undergoes a first deformation, and the first brush 231 undergoes a second deformation; the first deformation is greater than the second deformation, the coating unit 23 includes the first brush 231 and the second brush 232, and the second brush 232 and the first brush 231 are arranged sequentially along the first direction; the sum of the maximum dimensions of the portions of the first brush 231 and the second brush 232 used to abut against the shaft assembly 30 along the set axis is less than the maximum dimension of the outer peripheral wall to be coated along the set axis.

[0052] When the coating unit 23 moves to the first state, the deformation of the first brush 231 is small and the deformation of the second brush 232 is large. After the first brush 231 separates from the outer peripheral wall to be coated, it rebounds, which is conducive to the first brush 231 abutting against the end to be coated. The second brush 232 keeps abutting against the outer peripheral wall to be coated. The large deformation allows the second brush 232 to have a larger contact area with the local outer peripheral wall to be coated near the end to be coated in the circumferential direction of the shaft. Thus, the first brush 231 coats the end to be coated and the second brush 232 coats the outer peripheral wall to be coated simultaneously in the first state, improving the working efficiency of coating the shaft assembly 30 with fluid medium.

[0053] Furthermore, the coating unit 23 may include a plurality of first brushes 231 and second brushes 232 arranged sequentially along the first direction, thereby improving the efficiency of coating the shaft assembly 30 with a fluid medium.

[0054] Further, please refer to Figure 3 The first state also includes L1 < L2; where L1 is the dimension of the first brush 231 abutting the end to be coated along the second direction; L2 is the maximum dimension of the second brush 232 abutting the outer peripheral wall to be coated along the set axis; the second direction is the direction from the second brush 232 to the set axis, and the second direction is parallel to the radial direction of the shaft assembly 30; D > 2 × R; D is the dimension of the outer peripheral wall to be coated along the set axis, and R is the radius of the end to be coated.

[0055] Specifically, by setting the length L1 of the first brush 231 to be less than the length L2 of the second brush 232, the first brush 231 is shorter and easier to separate from the outer peripheral wall to be coated. When the coating unit 23 moves to the first state, the first brush 231 can reach the end to be coated, while the longer second brush 232 is not easy to detach from the outer peripheral wall to be coated. When the coating unit 23 moves to the first state, the second brush 232 still abuts against the outer peripheral wall to be coated. This achieves the purpose of the first brush 231 coating the end to be coated and the second brush 232 coating the outer peripheral wall to be coated simultaneously in the first state, improving the working efficiency of the fluid medium coating the shaft assembly 30. At the same time, controlling the length of the first brush 231 and the second brush 232 can reduce costs in practical applications.

[0056] Please refer to the following: Figure 3 and Figure 6 The dimension D of the outer peripheral wall to be coated is set to be greater than twice the radius R of the end to be coated. Corresponding to the setting of the length of the first brush 231 and the second brush 232, during the coating process, the first brush 231 with a shorter length L1 abuts against the end to be coated with a shorter radius R, and the second brush 232 with a longer length L2 abuts against the outer peripheral wall with a longer dimension D. In this way, the first brush 231 and the second brush 232 are adapted to the length of the end to be coated and the outer peripheral wall to be coated, which facilitates the coating work of the shaft assembly 30.

[0057] Furthermore, after step S30, the shaft coating method also includes step S40: each step can be described in detail below, and steps S10 to S30 and step S40 are executed sequentially;

[0058] Step S40: Based on the coating unit 23 moving to the first state along the first direction, the coating unit 23 stops moving along the first direction and the coating unit 23 moves along the second direction (the second direction can be as follows). Figure 3 (As shown in the top-to-bottom direction) moves to the third state; wherein, the third state includes the area on the end to be coated that has been in contact with the first brush 231 being greater than or equal to the first area threshold, L1 < R.

[0059] Specifically, the first area threshold is 85% of the area of ​​the end to be coated. The actual value shall prevail. As can be seen from the above, the length L1 of the first brush 231 is relatively short, so when the first brush 231 coats the end to be coated, it needs to move along the second direction to completely coat the area of ​​the end to be coated.

[0060] Furthermore, during the process of the coating unit 23 moving to abut the outer peripheral wall of the shaft assembly 30, at least part of the coating unit 23 deforms circumferentially along the outer peripheral wall to be coated; wherein, the coating assembly 20 includes the coating unit 23 and the bonding groove 24, the bonding groove 24 penetrating the coating unit 23 along the direction from the coating unit 23 to the shaft assembly 30.

[0061] Specifically, the setting of the bonding groove causes the coating unit 23 to deform when it comes into contact with the end to be coated, increasing the area of ​​the coating unit 23 that comes into contact with the end to be coated of the shaft assembly 30 in the circumferential direction. This allows the coating unit 23 to coat the area of ​​the shaft assembly 30 with fluid medium more quickly, thereby improving the working efficiency of the coating unit 23 in coating the shaft assembly 30 with fluid medium.

[0062] Furthermore, step S10 also includes step S11: steps S10 and S11 are executed sequentially;

[0063] Step S11: Based on the rotation of the drive shaft assembly 30 around a set axis, the supply unit 22 outputs fluid medium to the top of the coating unit 23; wherein, the coating assembly 20 includes the coating unit 23 and the supply unit 22.

[0064] Specifically, the supply unit 22 outputs the fluid medium from the top of the coating unit 23, increasing the path for the fluid medium to move to the bottom of the coating unit 23, preventing the fluid medium from dripping from below the coating unit 23 and causing contamination of the operating area and waste of the fluid medium. The output fluid medium can be a friction reducer or a lubricating oil. At the same time, the supply unit 22 can output the fluid medium in a way that outputs a set volume or a set weight to the coating unit 23 at set intervals, depending on the actual application.

[0065] Example 2:

[0066] This embodiment provides a shaft coating system, which is applied to any of the shaft coating methods described in the above embodiments, such as... Figure 2 As shown, the shaft coating system may include:

[0067] Shaft assembly 30; Coating unit 23 coats the shaft assembly 30 with a fluid medium, so that the fluid medium forms a coating on the shaft assembly 30 to prevent the shaft assembly 30 from rusting when in contact with the outside world, thereby affecting subsequent assembly.

[0068] Rotating component 10, which can drive shaft assembly 30 to rotate around a set axis;

[0069] The coating unit 23 is a multi-layer sheet structure arranged sequentially along a set axis; at least a portion of the coating unit 23 is an elastic body; a coating is formed on the area of ​​the shaft assembly 30 that abuts the coating unit 23; the maximum dimension of the portion of the coating unit 23 that abuts the shaft assembly 30 along the set axis is smaller than the maximum dimension of the outer peripheral wall of the shaft assembly 30 to be coated along the set axis; the coating unit 23 is capable of adsorbing fluid medium, and the coating unit 23 can be a brush or a felt, preferably a felt.

[0070] The working state of the shaft coating system includes the rotating component 10 driving the shaft assembly 30 to rotate around a set axis, the coating unit 23 moving to abut against the outer peripheral wall to be coated, and the coating unit 23 moving to a first state along a first direction; wherein, the first direction is the direction from the outer peripheral wall to be coated to the end of the shaft assembly 30 to be coated; the first state is that part of the coating unit 23 abuts against the end to be coated, and part of the coating unit 23 abuts against the outer peripheral wall to be coated.

[0071] Specifically, in operation, the shaft coating system first drives the shaft assembly 30 to rotate along the central axis, then drives the coating unit 23 to abut against the outer peripheral wall of the shaft assembly 30 to be coated. Then, as the coating assembly 20 moves closer to the end to be coated, 60% to 70% of the area of ​​the outer peripheral wall to be coated is coated. Finally, some of the coating units 23 are moved to abut against the end to be coated, and some of the coating units 23 abut against the outer peripheral wall to be coated, so that the coating unit 23 can coat both the end to be coated and the outer peripheral wall to be coated at the same time, thereby improving the working efficiency of coating the shaft assembly 30 with fluid media.

[0072] Further, the coating unit 23 includes a first brush 231 and a second brush 232, the second brush 232 and the first brush 231 being arranged sequentially along a first direction; L1 is the dimension of the first brush 231 abutting the end to be coated along a second direction, and L2 is the maximum dimension of the second brush 232 abutting the outer peripheral wall to be coated along a set axis; the second direction is the direction from the second brush 232 to the set axis, and the second direction is parallel to the radial direction of the shaft assembly 30; D > 2 × R; D is the dimension of the outer peripheral wall to be coated along the set axis, and R is the radius of the end to be coated.

[0073] Specifically, by setting the length L1 of the first brush 231 to be less than the length L2 of the second brush 232, the first brush 231 is shorter and easier to separate from the outer peripheral wall to be coated. When the coating unit 23 moves to the first state, the first brush 231 can reach the end to be coated, while the longer second brush 232 is not easy to detach from the outer peripheral wall to be coated. When the coating unit 23 moves to the first state, the second brush 232 still abuts against the outer peripheral wall to be coated. This achieves the purpose of the first brush 231 coating the end to be coated and the second brush 232 coating the outer peripheral wall to be coated simultaneously in the first state, improving the working efficiency of coating the shaft assembly 30 with fluid medium. At the same time, controlling the length of the first brush 231 and the second brush 232 can reduce costs in practical applications.

[0074] Specifically, the dimension D of the outer peripheral wall to be coated is set to be greater than twice the radius R of the end to be coated. This corresponds to the setting of the lengths of the first brush 231 and the second brush 232. During the coating process, the first brush 231, which has a shorter length L1, abuts against the end to be coated with a shorter radius R, while the second brush 232, which has a longer length L2, abuts against the outer peripheral wall to be coated with a longer dimension D. In this way, the lengths of the first brush 231 and the second brush 232 are matched with the end to be coated and the outer peripheral wall to be coated, which facilitates the coating work of the shaft assembly 30.

[0075] Furthermore, the coating unit 23 also includes an elastic sheet (not shown); the elastic sheet is at least connected to the first brush 231; the stiffness of the elastic sheet is greater than the stiffness of the first brush 231 and the second brush 232, respectively.

[0076] Specifically, when the elastic sheet is at least partially connected to the first brush 231, and the stiffness of the elastic sheet is greater than that of the first brush 231, the first brush 231 can more easily separate from the outer peripheral wall to be coated in the first state, thereby abutting against the end to be coated, achieving simultaneous coating of the end to be coated and the outer peripheral wall to be coated. Simultaneously, when the elastic sheet is at least partially connected to the second brush 232, and the stiffness of the elastic sheet is greater than that of the second brush 232, the second brush 232 abuts more tightly against the outer peripheral wall to be coated, achieving coating of the outer peripheral wall near the shaft end with a fluid medium.

[0077] In another embodiment, the coating unit 23, the storage unit 21, the supply unit 22, the bonding groove 24, and the drive unit 25 together constitute the coating assembly 20. The storage unit 21 can store the fluid medium and supply the fluid medium to the coating unit 23 through the supply unit 22. The supply unit 22 is connected to the storage unit 21 and the coating unit 23 respectively, and supplies the fluid medium in the storage unit 21 to the coating unit 23. The drive unit 25 provides driving force to the coating unit 23, driving the coating unit 23 to coat the shaft assembly 30 with the fluid medium.

[0078] The rotating assembly 10 includes a support unit 11 and a rotating unit 12. The support unit 11 is placed at the bottom to provide a reference surface for placing the shaft assembly 30, preventing the coating effect from being affected by the unevenness of the bottom surface. The rotating unit 12 is arranged opposite to the support unit 11, with the shaft assembly 30 in between. The rotating unit 12 abuts against the middle area of ​​the shaft assembly 30 and drives the shaft assembly 30 to rotate along the central axis, which facilitates the coating unit 23 to coat the shaft assembly 30 with the fluid medium, further improving the working efficiency of the shaft coating system.

[0079] For details, please refer to Figure 4 The supporting unit 11 includes a supporting wheel 111 and a frame 112. The supporting wheel 111 and the frame 112 are movably connected. The frame 112 provides support at the bottom. The supporting wheel 111 is mounted on the frame 112 to support the shaft assembly 30 and prevent the shaft assembly 30 from deviating or shifting when rotating along the central axis, thereby affecting the coating work of the coating unit 23. The rotating unit 12 includes a rotating wheel 121 and a driving part 122. The rotating wheel 121 can move to abut against the shaft assembly 30 and drive the shaft assembly 30 to rotate. The driving part 122 is connected to the rotating wheel 121 and drives the rotating wheel 121 to rotate.

[0080] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A shaft coating method, characterized in that, The shaft coating method includes: The drive shaft assembly rotates around a set axis; The coating unit moves to abut against the outer peripheral wall of the shaft assembly to be coated; wherein, the maximum dimension of the portion of the coating unit that abuts against the outer peripheral wall to be coated along the set axis is smaller than the maximum dimension of the outer peripheral wall to be coated along the set axis; a coating is formed in the area of ​​the shaft assembly that abuts the coating unit. The coating unit moves to a first state along a first direction; wherein, the first direction is the direction from the outer peripheral wall to be coated to the end of the shaft assembly to be coated; the outer peripheral wall to be coated and the end to be coated are arranged adjacent to each other; the coating unit is a multi-layer sheet structure arranged sequentially along the set axis; the first state includes the coating unit of a partial layer abutting the end to be coated, and the coating unit of a partial layer abutting the outer peripheral wall to be coated.

2. The shaft coating method according to claim 1, characterized in that, The coating unit moving to the first state along the first direction includes: Based on the coating unit moving to abut against the outer peripheral wall to be coated, the coating unit moves to a second state along the first direction at a first speed; wherein, the second state includes the area on the outer peripheral wall to be coated that has contacted the coating unit within a first area range; The coating unit moves to the first state along the first direction at a second speed; wherein the first speed is slower than the second speed; the first state also includes the area on the outer peripheral wall to be coated that has been in contact with the coating unit within a second area range.

3. The shaft coating method according to claim 1, characterized in that, The first state further includes the second brush of the coating unit abutting against the outer peripheral wall to be coated, and the first brush of the coating unit abutting against the end to be coated; wherein the second brush undergoes a first deformation, and the first brush undergoes a second deformation; the first deformation is greater than the second deformation, the coating unit includes the first brush and the second brush, and the second brush and the first brush are arranged sequentially along the first direction; the sum of the maximum dimensions of the portions of the first brush and the second brush used to abut against the shaft assembly along the set axis is less than the maximum dimension of the outer peripheral wall to be coated along the set axis.

4. The shaft coating method according to claim 3, characterized in that, The first state also includes L1 < L2; where L1 is the dimension of the first brush abutting the end to be coated along the second direction; L2 is the maximum dimension of the second brush abutting the outer peripheral wall to be coated along the set axis; the second direction is the direction of the second brush to the set axis, and the second direction is parallel to the radial direction of the shaft assembly; D > 2 × R; D is the dimension of the outer peripheral wall to be coated along the set axis, and R is the radius of the end to be coated.

5. The shaft coating method according to claim 4, characterized in that, The shaft coating method further includes: Based on the coating unit moving along the first direction to the first state, the coating unit stops moving along the first direction and the coating unit moves along the second direction to the third state; wherein, the third state includes the area on the end to be coated that has been in contact with the first brush being greater than or equal to a first area threshold, L1 < R.

6. The shaft coating method according to claim 1, characterized in that, During the process of the coating unit moving to abut against the outer peripheral wall of the shaft assembly, at least a portion of the coating unit deforms circumferentially along the outer peripheral wall to be coated; wherein, the coating assembly includes the coating unit and a bonding groove, the bonding groove penetrating the coating unit along the direction from the coating unit to the shaft assembly.

7. The shaft coating method according to claim 1, characterized in that, The shaft coating method further includes: Based on the rotation of the drive shaft assembly around a set axis, the supply unit outputs a fluid medium to the top of the coating unit; wherein, the coating assembly includes the coating unit and the supply unit.

8. A shaft coating system, said shaft coating system being applied to a shaft coating method according to any one of claims 1 to 7, said shaft coating system comprising: Shaft assembly; A rotating component capable of driving the shaft assembly to rotate about a predetermined axis; A coating unit, wherein the coating unit is a multi-layer sheet structure arranged sequentially along the set axis; at least a portion of the coating unit is an elastomer; a coating is formed on the area of ​​the shaft assembly that abuts the coating unit; the maximum dimension of the portion of the coating unit that abuts the shaft assembly along the set axis is smaller than the maximum dimension of the outer peripheral wall of the shaft assembly to be coated along the set axis; The working states of the shaft coating system include the rotating component driving the shaft assembly to rotate around the set axis, the coating unit moving to abut against the outer peripheral wall to be coated, and the coating unit moving to a first state along a first direction; wherein, the first direction is the direction from the outer peripheral wall to be coated to the end of the shaft assembly to be coated; the first state is that part of the coating unit abuts against the end to be coated, and part of the coating unit abuts against the outer peripheral wall to be coated.

9. A shaft coating system according to claim 8, characterized in that, The coating unit includes a first brush and a second brush, which are arranged sequentially along the first direction; L1 is the dimension of the first brush abutting the end to be coated along the second direction, and L2 is the maximum dimension of the second brush abutting the outer peripheral wall to be coated along the set axis; the second direction is the direction from the second brush to the set axis, and the second direction is parallel to the radial direction of the shaft assembly; D > 2 × R; D is the dimension of the outer peripheral wall to be coated along the set axis, and R is the radius of the end to be coated.

10. A shaft coating system according to claim 9, characterized in that, The coating unit further includes an elastic sheet; the elastic sheet is at least connected to the first brush; the stiffness of the elastic sheet is greater than that of the first brush and the second brush, respectively.

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