Online straightness adjusting device for lip of transfer coating comma scraper

Abstract

The invention provides an online straightness adjusting device for a lip of a transfer coating comma scraper. The online straightness adjusting device comprises a scraper seat assembly, a combined scraper assembly, a scraper angle adjusting assembly, a coating roller assembly and a differential screw adjusting assembly, the combined scraper assembly is arranged beside the coating roller assembly through the scraper base assembly and connected with the scraper angle adjusting assembly and the differential screw adjusting assembly. The combined scraper assembly comprises a scraper shaft core, a scraper and a scraper supporting end. The differential screw adjusting assembly comprises an outer differential screw and an inner differential screw. The outer differential screw is connected with the inner differential screw and the scraper, and the outer differential screw is connected to the scraper shaft core through the inner differential screw. According to the invention, the processing difficulty and the precision requirement of the transfer coating comma scraper can be reduced, the flexible and reliable adjustment effect is effectively realized, the service life of the scraper is prolonged, the cost and the maintenance difficulty of equipment are reduced, and the current coating thickness is ensured to meet the actual coating thickness requirement.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion battery production equipment, in particular to an online straightness adjustment device for the lip of a comma scraper for transfer coating. Background Art

[0002] Compared with traditional batteries, lithium-ion batteries have the advantages of higher energy, stronger discharge capacity and longer cycle life. In addition, their energy storage efficiency can exceed 90% and their safety performance is good. Therefore, lithium-ion batteries have great development prospects in electric vehicles and storage power sources. At present, there are two main ways to coat the pole pieces in the production process of lithium-ion batteries, extrusion coating and transfer coating. Among them, transfer coating is mainly completed by coating rollers, scrapers and back rollers, and the role of the scraper is to scrape off the excess slurry on the coating roller, and the scraping is achieved by the scraper lip. Therefore, the accuracy of the straightness of the scraper lip will directly affect the uniformity of the coating. If the coating is uneven, resulting in uneven distribution of the coating thickness, it will cause local overcharge or over-discharge of the electrode material during use, thereby affecting the performance and life of the lithium battery.

[0003] Although there are devices for controlling the straightness of comma scrapers in the prior art, such as: CN214347599U, a comma scraper UV coating machine, in this public document, a comma scraper is used to reduce the wear of the comma scraper by aluminum oxide particles in the coating, and the comma scraper blade is made of high-speed steel, and then the characteristics of high-speed steel are used to achieve the effect, and the regional division effect of lip adjustment cannot be achieved. CN205613655U, a double-layer structure comma scraper roller with adjustable blade straightness, in this public document, although an adjustment screw is set, the adjustment screw of this scheme is itself integrated, and can only simply adjust the vertical distance from the outer wall to the mandrel, and the adjustment screw cannot be used to separately adjust the different levels of the scraper roller body, and it cannot ensure that the coating thickness meets the actual requirements. CN101602039A A combination device for improving the working accuracy of a comma scraper. In this public document, different positions of the auxiliary shaft are locked on the support arm to generate axial loads of different sizes and directions on the support arm to balance the gravity and bending moment generated by the working load on the comma scraper or the slender shaft. Although it can solve part of the flexural deformation problem, it still cannot achieve the regional division effect of lip adjustment. CN205816115U A coating machine scraper combination device. This public document adopts an internal pressurization structure to adjust or eliminate the flexural deformation of the comma scraper in real time. However, in actual application, this solution not only requires real-time monitoring of the force applied to the scraper, but also requires real-time control of the internal pressurization structure based on the monitored force, which increases the cost in both hardware and software and increases the difficulty of controlling the equipment.

[0004] That is to say, in the prior art, some solutions use an integrated scraper. This integrated processing not only has the problems of high processing difficulty and high precision requirements, but also after the lip is affected and locally deformed, it is impossible to directly adjust and maintain the regional division, and the only option is to replace the scraper, which will cause production stoppages and increased costs. Even if some solutions can adjust the straightness, they only simply adjust the vertical distance from the outer wall to the core axis, and cannot adjust the different hierarchical structures of the scraper roller separately, and cannot ensure that the current coating thickness meets the actual coating thickness requirements during the actual coating process. There are also some solutions that provide solutions for adjusting or eliminating the flexural deformation of the comma scraper, but obviously, they increase the cost of hardware and software and increase the difficulty of control. Summary of the invention

[0005] The technical problem to be solved by the present invention is that it is necessary to provide an online straightness adjustment device for the lip of a transfer coating comma scraper, aiming to effectively reduce its processing difficulty and precision requirements, realize flexible adjustment and maintenance effects of regional division, extend the service life of the transfer coating comma scraper, and reduce the cost and maintenance difficulty of the equipment; on this basis, the different hierarchical structures of the combined scraper assembly can also be adjusted separately, and combined with the overall structure and its assembly and debugging process, to ensure that during the actual coating process, the current coating thickness meets the actual coating thickness requirements.

[0006] To this end, the present invention provides an online straightness adjustment device for the lip of a transfer coating comma scraper, comprising: a scraper seat assembly, a combined scraper assembly, a scraper angle adjustment assembly, a coating roller assembly and a differential screw adjustment assembly; the combined scraper assembly is arranged beside the coating roller assembly through the scraper seat assembly, and the combined scraper assembly is respectively connected to the scraper angle adjustment assembly and the differential screw adjustment assembly; the combined scraper assembly comprises a scraper shaft core, a scraper and a scraper support end, and the scraper is fixed to the scraper shaft core through the scraper support end; the differential screw adjustment assembly comprises an outer differential screw and an inner differential screw, and the outer differential screw is respectively connected to the inner differential screw and the scraper, and the outer differential screw is connected to the scraper shaft core through the inner differential screw; The assembly and debugging process of the online straightness adjustment device for the lip of the comma scraper for transfer coating comprises the following steps: Step S1, firstly, the scraper is sleeved on the scraper shaft core through the scraper support end, and then the differential screw adjustment assembly is installed and adjusted, so that the outer differential screw is connected to the scraper, and the outer differential screw is connected to the scraper shaft core through the inner differential screw, to obtain an assembled combined scraper component; Step S2, installing the combined scraper component obtained in step S1 onto the scraper seat assembly, and then installing the scraper angle adjustment assembly on one side of the scraper seat assembly, the scraper angle adjustment assembly passes through the scraper seat assembly and is connected to the scraper shaft core to obtain an assembled online straightness adjustment device for the lip of the comma scraper for transfer coating; Step S3, adjusting the lip position of the scraper by the scraper holder assembly and the scraper angle adjustment assembly until the lip contacts the surface of the coating roller assembly; Step S4, performing light leakage detection at the junction of the lip and the coating roller assembly by irradiating light. If the light leakage detection value is lower than the preset light leakage threshold, it is judged that there is no light leakage, and the debugging process is completed; otherwise, the inner differential screw is adjusted at the light leakage position where the light leakage detection value is not lower than the preset light leakage threshold, and after adjusting the inner differential screw, the light leakage detection is returned and performed again until it is judged that there is no light leakage; Step S5, firstly, according to the coating thickness requirement, the position of the lip (25) is adjusted by the scraper seat assembly (1) and the scraper angle adjustment assembly (3), and a preset length is tested; then, the difference between the coating thickness after the preset length is tested and the coating thickness requirement is measured to see whether it is less than a thickness difference threshold value; if so, the test coating process is completed; if not, the process returns to adjust the position of the lip (25) again by the scraper seat assembly (1) and the scraper angle adjustment assembly (3), until the difference between the coating thickness after the preset length is tested and the coating thickness requirement is less than the thickness difference threshold value.

[0007] A further improvement of the present invention is that the combined scraper assembly also includes a first locking nut, and the scraper support end is fixedly connected to the scraper shaft core through the first locking nut; in the step S1, the scraper support end is first inserted into one end of the scraper shaft core, and then the scraper is inserted into the scraper shaft core, and the scraper is engaged with the scraper support end, and finally the scraper support end is inserted into the other end of the scraper shaft core, and the scraper support end is engaged with the scraper, and the scraper shaft core and the scraper support end are fixed by the first locking nut.

[0008] A further improvement of the present invention is that the combined scraper assembly also includes a second locking nut, and the scraper is connected to the scraper support end via the second locking nut; in the step S1, after the scraper shaft core and the scraper support end are fixed by the first locking nut, the position of the scraper is adjusted to the center position of the scraper shaft core, and the scraper and the scraper support end are fixed by the second locking nut; the first locking nut and the second locking nut are staggered.

[0009] A further improvement of the present invention lies in that, in step S3, the process of adjusting the lip position of the scraper through the scraper seat assembly and the scraper angle adjustment assembly is as follows: after the scraper angle adjustment assembly passes through the scraper seat assembly, the lip position of the scraper is adjusted, a connecting shaft is arranged in the scraper seat assembly, the scraper angle adjustment assembly includes an adjustment handle, one end of the scraper angle adjustment assembly is connected to the scraper shaft core through the connecting shaft in the scraper seat assembly, thereby adjusting the lip position of the scraper.

[0010] A further improvement of the present invention is that the scraper is provided with two groups of first threaded holes which are radially symmetrical and linearly equidistantly arranged, and the internal threads of the first threaded holes match the external threads of the external differential screw.

[0011] A further improvement of the present invention is that the first threaded hole is arranged beside the lip.

[0012] A further improvement of the present invention is that two groups of second threaded holes which are radially symmetrical and linearly equidistantly arranged are provided on the scraper shaft core, and the internal threads of the second threaded holes match the external threads of the internal differential screw.

[0013] A further improvement of the present invention is that the position and spacing of the second threaded holes correspond to the position and spacing of the first threaded holes respectively.

[0014] A further improvement of the present invention is that the scraper angle adjustment assembly includes an adjustment handle, and one end of the scraper angle adjustment assembly is connected to the scraper shaft core through a connecting shaft in the scraper seat assembly.

[0015] A further improvement of the present invention is that in the step S, when the light leakage detection value is not lower than the preset light leakage threshold, the inner differential screw is adjusted by rotating the outer differential screw at the light leakage position where the light leakage detection value is not lower than the preset light leakage threshold, so that the distance between the scraper shaft core and the scraper changes, and a strain area is formed relative to the non-rotated outer differential screw, so as to drive the straightness change of the lip of the strain area.

[0016] Compared with the prior art, the beneficial effects of the present invention are: providing an online straightness adjustment device for the lip of a transfer coating comma scraper, assembling and adjusting the independently arranged combined scraper assembly through a scraper seat assembly and a scraper angle adjustment assembly, and providing a regional division basis for the adjustment of the lip through a differential screw adjustment assembly including an outer differential screw and an inner differential screw, so that each group of differential screw adjustment assemblies can adjust the straightness of the lip at the corresponding position; and correspondingly providing an assembly and debugging process for the online straightness adjustment device for the lip of the transfer coating comma scraper, which can adjust the straightness of the lip online / in real time through feedback from the assembly and debugging process, thereby improving the uniformity of the electrode material on the electrode piece. Therefore, the present invention can reduce the processing difficulty and precision requirements of the transfer coating comma scraper, can effectively realize flexible and reliable adjustment and maintenance effects based on regional division, extend the service life of the transfer coating comma scraper, and reduce the cost and maintenance difficulty of the equipment.

[0017] On this basis, the different levels of the combined scraper assembly can be individually adjusted through the matching external differential screws and internal differential screws, and the scraper and scraper shaft core of the combined scraper assembly can be individually adjusted through a simple and efficient structure. Combined with the overall structure and its assembly and debugging process, a trial coating process (i.e., a trial spraying process) is carried out before the formal transfer coating spraying process to ensure that during the actual coating process, the current coating thickness meets the actual coating thickness requirements, thereby effectively ensuring the production yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of an embodiment of the present invention; Figure 2 is a front cross-sectional structural schematic diagram of an embodiment of the present invention; Figure 3 is a side structural schematic diagram of an embodiment of the present invention; Figure 4 is a schematic diagram of a side cross-sectional structure of an embodiment of the present invention; Figure 5 is a structural schematic diagram of a differential screw adjustment assembly according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the local structural assembly of an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In the description of the present invention, if it involves a description of orientation, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. If a certain technical feature is referred to as "set", "fixed", "connected", or "installed" on another technical feature, it can be directly set, fixed, or connected to the other technical feature, or it can be indirectly set, fixed, connected, or installed on the other technical feature.

[0020] In the description of the present invention, if "several" is involved, it means more than one; if "multiple" is involved, it means more than two; if "greater than", "less than", or "exceed" is involved, it should be understood as not including the number itself; if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first", "second", etc. are involved, they should be understood as being used only to distinguish the names of the same or similar technical features, and should not be understood as implying / indicating the relative importance of the technical features, the number of the technical features, or the order of the technical features.

[0021] The preferred embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 6 As shown, this embodiment provides an online straightness adjustment device for the lip of a comma scraper for transfer coating, comprising: a scraper seat assembly 1, a combined scraper assembly 2, a scraper angle adjustment assembly 3, a coating roller assembly 4 and a differential screw adjustment assembly 5; the combined scraper assembly 2 is arranged beside the coating roller assembly 4 through the scraper seat assembly 1, and the combined scraper assembly 2 is respectively connected to the scraper angle adjustment assembly 3 and the differential screw adjustment assembly 5; the combined scraper assembly 2 comprises a scraper shaft core 21, a scraper 22 and a scraper support end 23, and the scraper 22 is fixed on the scraper shaft core 21 through the scraper support end 23; the differential screw adjustment assembly 5 comprises an outer differential screw 51 and an inner differential screw 52, ​​and the outer differential screw 51 is respectively connected to the inner differential screw 52 and the scraper 22, and the outer differential screw 51 is connected to the scraper shaft core 21 through the inner differential screw 52; The assembly and debugging process of the online straightness adjustment device for the lip of the comma scraper for transfer coating comprises the following steps: Step S1, firstly sleeve the scraper 22 onto the scraper shaft core 21 through the scraper support end 23, and then install and adjust the differential screw adjustment assembly 5, so that the outer differential screw 51 is connected to the scraper 22, and the outer differential screw 51 is connected to the scraper shaft core 21 through the inner differential screw 52, ​​to obtain an assembled combined scraper component; Step S2, installing the combined scraper component obtained in step S1 onto the scraper seat assembly 1, and then installing the scraper angle adjustment assembly 3 on one side of the scraper seat assembly 1, the scraper angle adjustment assembly 3 passes through the scraper seat assembly 1 and is connected to the scraper shaft core 21, to obtain an assembled online straightness adjustment device for the lip of the comma scraper for transfer coating; Step S3, adjusting the position of the lip 25 of the scraper 22 by the scraper holder assembly 1 and the scraper angle adjustment assembly 3 until the lip 25 contacts the surface of the coating roller assembly 4; Step S4, performing light leakage detection at the junction of the lip 25 and the coating roller assembly 4 by irradiating light. If the light leakage detection value is lower than the preset light leakage threshold, it is determined that there is no light leakage, and the debugging process is completed; otherwise, the inner differential screw 52 is adjusted at the light leakage position where the light leakage detection value is not lower than the preset light leakage threshold, and after adjusting the inner differential screw 52, ​​the light leakage detection is returned and performed again until it is determined that there is no light leakage; Step S5, firstly, according to the coating thickness requirement, the position of the lip (25) is adjusted by the scraper seat assembly (1) and the scraper angle adjustment assembly (3), and a preset length is tested; then, the difference between the coating thickness after the preset length is tested and the coating thickness requirement is measured to see whether it is less than a thickness difference threshold value; if so, the test coating process is completed; if not, the process returns to adjust the position of the lip (25) again by the scraper seat assembly (1) and the scraper angle adjustment assembly (3), until the difference between the coating thickness after the preset length is tested and the coating thickness requirement is less than the thickness difference threshold value.

[0023] In step S5 described in this embodiment, the preset length of trial coating refers to the preset length of trial spraying, and the value of this length can be set according to actual conditions and needs. The thickness difference threshold refers to a preset judgment threshold for the difference between the coating thickness after the preset length of trial coating and the coating thickness requirement, and this thickness difference threshold can also be set according to actual conditions and needs. Through the setting of step S5 in this embodiment, a trial coating process (i.e., a trial spraying process) can be performed before the transfer coating spraying process is formally performed to ensure that the current coating thickness meets the actual coating thickness requirement, thereby effectively ensuring the production yield of the product.

[0024] In this embodiment, the combined scraper assembly 2 no longer adopts an integrated scraper structure, but includes independent components such as a scraper shaft core 21, a scraper 22 and a scraper support end 23. The scraper 22 is sleeved in the middle of the scraper seat assembly 1 through the scraper shaft core 21 and the scraper support end 23, and the scraper support end 23 is locked at both ends of the scraper shaft core 21 to position and limit the scraper 22; a plurality of groups of differential screw adjustment assemblies 5 are arranged in the screw holes of the scraper 22 and the scraper shaft core 21, and each group of differential screw adjustment assemblies 5 includes corresponding sleeved outer differential screws 51 and inner differential screws 52, the outer differential screws 51 are connected to the scraper 22, and the inner differential screws 52 are connected to the scraper shaft core 21, so as to realize the straightness adjustment of the lip 25 at the corresponding position through the differential screw adjustment assemblies 5 at each position.

[0025] In step S3 of this embodiment, the position of the lip 25 of the scraper 22 is adjusted by the scraper seat assembly 1 and the scraper angle adjustment assembly 3, which means that the scraper angle adjustment assembly 3 passes through the scraper seat assembly 1 to adjust the position of the lip 25 of the scraper 22. Preferably, Figure 2 As shown, a connecting shaft 11 is provided in the scraper seat assembly 1. The scraper angle adjustment assembly 3 in this embodiment includes an adjustment handle. One end of the scraper angle adjustment assembly 3 is connected to the scraper shaft core 21 through the connecting shaft 11 in the scraper seat assembly 1, thereby adjusting the position of the lip 25 of the scraper 22. The scraper 22 can be rotated and locked on the scraper seat assembly 1 along with the scraper shaft core 21 and the scraper support end 23. In the step S4, the preset light leakage threshold refers to a preset threshold for judging the light leakage detection value, which can be set and adjusted according to actual conditions; when the light leakage detection value is lower than the preset light leakage threshold, it is judged that there is no light leakage, that is, the lip 25 is in smooth contact with the surface of the coating roller assembly 4, and the surface of the coating roller assembly 4 is padded with a pole piece during the actual coating process.

[0026] like Figure 1 As shown, the combined scraper assembly 2 described in this embodiment also includes a first locking nut 24, and the scraper support end 23 is fixedly connected to the scraper shaft core 21 through the first locking nut 24; in the step S1, the scraper support end 23 is first inserted into one end of the scraper shaft core 21, and then the scraper 22 is inserted into the scraper shaft core 21, and the scraper 22 is connected with the scraper support end 23 by interlocking connection, and finally the scraper support end 23 is inserted into the other end of the scraper shaft core 21, and the scraper support end 23 is connected with the scraper 22 by interlocking connection, and the scraper shaft core 21 and the scraper support end 23 are fixed by the first locking nut 24, so as to ensure the reliable connection and detachable assembly between the scraper shaft core 21 and the scraper support end 23, which is convenient for later debugging and maintenance.

[0027] like Figure 1As shown, the combined scraper assembly 2 described in this embodiment also includes a second locking nut 26, and the scraper 22 is connected to the scraper supporting end 23 through the second locking nut 26; in the step S1, after the scraper shaft core 21 and the scraper supporting end 23 are fixed by the first locking nut 24, the position of the scraper 22 is adjusted to the center position of the scraper shaft core 21, and the scraper 22 and the scraper supporting end 23 are fixed by the second locking nut 26; thereby ensuring the reliable connection and detachable assembly between the scraper 22 and the scraper supporting end 23, which is convenient for later debugging and maintenance. It is worth mentioning that in the present embodiment, the first locking nut 24 and the second locking nut 26 are staggered, such as the first locking nut 24 is located on the outer side of the scraper supporting end 23, and the second locking nut 26 is located on the inner side of the scraper supporting end 23, and they are also staggered in the axial direction; therefore, there is no need to perform avoidance design for the assembly of the two locking nuts, which is beneficial to improving the overall assembly efficiency of the device, and also brings about a fool-proof effect to avoid making mistakes in the locking position.

[0028] like Figure 1 and Figure 6 As shown, the scraper 22 of this embodiment is provided with two groups of first threaded holes that are arranged radially symmetrically and linearly equidistantly, and the internal threads of the first threaded holes match the external threads of the external differential screw 51. For example, from the center to both sides, there are 17 φ18 deep 3 countersunk holes arranged equidistantly, each circle center has an M8x1 screw hole, two M8 screw holes are symmetrical in the middle, and a φ5.5 hole is opened at the outermost end. Correspondingly, the scraper shaft core 21 of this embodiment is also provided with two groups of second threaded holes that are arranged radially symmetrically and linearly equidistantly, and the internal threads of the second threaded holes match the external threads of the internal differential screw 52. The number of the first threaded holes and the second threaded holes are both multiple, and the position and spacing of the second threaded holes correspond to the position and spacing of the first threaded holes, so that more differential screw adjustment components 5 can be adapted, thereby effectively improving the adjustment precision.

[0029] It should be noted that if Figure 4 As shown, in this embodiment, the position of the first threaded hole is set next to the position of the lip 25. Therefore, on the one hand, the space of the lip 25 can be efficiently utilized to improve the assembly efficiency of the differential screw adjustment component 5, and it can also be more conducive to the subsequent debugging process; on the other hand, through such a compact structural design, the straightness adjustment sensitivity of the lip 25 is effectively improved, which facilitates the adjustment of the differential screw adjustment component 5 to be quickly fed back to the lip 25.

[0030] Preferably, in step S4 described in the present embodiment, when the light leakage detection value is not lower than the preset light leakage threshold, the inner differential screw 52 is adjusted by rotating the outer differential screw 51 at the light leakage position where the light leakage detection value is not lower than the preset light leakage threshold, thereby causing the distance between the scraper shaft core 21 and the scraper 22 to change, forming a strain area relative to the non-rotated outer differential screw 51, so as to drive the straightness change of the lip 25 of the strain area.

[0031] In summary, this embodiment provides an online straightness adjustment device for the lip of a transfer coating comma scraper, which realizes the assembly and adjustment of the independently set combined scraper assembly 2 through the scraper seat assembly 1 and the scraper angle adjustment assembly 3, and provides a regional division basis for the adjustment of the lip 25 through the differential screw adjustment assembly 5 including the outer differential screw 51 and the inner differential screw 52, ​​so that each group of differential screw adjustment assemblies 5 can adjust the straightness of the lip 25 at the corresponding position; it also provides the assembly and debugging process of the online straightness adjustment device for the lip of the transfer coating comma scraper, which can adjust the straightness of the lip online / in real time through the feedback of the assembly and debugging process, thereby improving the uniformity of the electrode material on the electrode piece. Therefore, the present invention can reduce the processing difficulty and precision requirements of the transfer coating comma scraper, can effectively realize flexible and reliable adjustment and maintenance effects based on regional division, extend the service life of the transfer coating comma scraper, and reduce the cost and maintenance difficulty of the equipment.

[0032] On this basis, the different levels of the combined scraper assembly 2 can be individually adjusted through the matching external differential screws 51 and internal differential screws 52, and the scraper 22 and scraper shaft core 21 of the combined scraper assembly 2 can be individually adjusted through a simple and efficient structure. Combined with the overall structure and its assembly and debugging process, a trial coating process (i.e., a trial spraying process) is carried out before the formal transfer coating spraying process to ensure that during the actual coating process, the current coating thickness meets the actual coating thickness requirements, thereby effectively ensuring the production yield of the product.

[0033] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An online straightness adjustment device for the lip of a comma scraper for transfer coating, characterized in that: include: A scraper seat assembly (1), a combined scraper assembly (2), a scraper angle adjustment assembly (3), a coating roller assembly (4) and a differential screw adjustment assembly (5); the combined scraper assembly (2) is arranged beside the coating roller assembly (4) via the scraper seat assembly (1), and the combined scraper assembly (2) is connected to the scraper angle adjustment assembly (3) and the differential screw adjustment assembly (5) respectively; the combined scraper assembly (2) comprises a scraper shaft core (21), a scraper (22) and a scraper support end (23), and the scraper (22) is fixed to the scraper shaft core (21) via the scraper support end (23); the differential screw adjustment assembly (5) comprises an outer differential screw (51) and an inner differential screw (52), the outer differential screw (51) is connected to the inner differential screw (52) and the scraper (22) respectively, and the outer differential screw (51) is connected to the scraper shaft core (21) via the inner differential screw (52); The assembly and debugging process of the online straightness adjustment device for the lip of the comma scraper for transfer coating includes the following steps: Step S1, firstly sleeve the scraper (22) onto the scraper shaft core (21) via the scraper support end (23), then install and adjust the differential screw adjustment assembly (5), so that the outer differential screw (51) is connected to the scraper (22), and the outer differential screw (51) is connected to the scraper shaft core (21) via the inner differential screw (52), thereby obtaining an assembled combined scraper component; Step S2, installing the combined scraper component obtained in step S1 onto the scraper seat assembly (1), and then installing the scraper angle adjustment assembly (3) on one side of the scraper seat assembly (1), wherein the scraper angle adjustment assembly (3) passes through the scraper seat assembly (1) and is connected to the scraper shaft core (21), thereby obtaining an assembled online straightness adjustment device for the lip of a comma scraper for transfer coating; Step S3, adjusting the position of the lip (25) of the scraper (22) by means of the scraper holder assembly (1) and the scraper angle adjustment assembly (3) until the lip (25) contacts the surface of the coating roller assembly (4); Step S4, performing light leakage detection at the junction of the lip (25) and the coating roller assembly (4) by illuminating the lip (25), and if the light leakage detection value is lower than a preset light leakage threshold, it is determined that there is no light leakage, and the debugging process is completed; Otherwise, adjusting the inner differential screw (52) at a light leakage position where the light leakage detection value is not lower than a preset light leakage threshold, and returning to re-perform light leakage detection after adjusting the inner differential screw (52) until it is determined that there is no light leakage; Step S5, firstly, according to the coating thickness requirement, the position of the lip (25) is adjusted by the scraper seat assembly (1) and the scraper angle adjustment assembly (3), and a preset length is tested; then, the difference between the coating thickness after the preset length is tested and the coating thickness requirement is measured to see whether it is less than a thickness difference threshold value; if so, the test coating process is completed; if not, the process returns to adjust the position of the lip (25) again by the scraper seat assembly (1) and the scraper angle adjustment assembly (3), until the difference between the coating thickness after the preset length is tested and the coating thickness requirement is less than the thickness difference threshold value.

2. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to claim 1, characterized in that: The combined scraper assembly (2) further comprises a first locking nut (24), and the scraper support end (23) is fixedly connected to the scraper shaft core (21) via the first locking nut (24); in the step S1, the scraper support end (23) is first inserted into one end of the scraper shaft core (21), and then the scraper (22) is inserted into the scraper shaft core (21), and the scraper (22) and the scraper support end (23) are engaged and connected, and finally the scraper support end (23) is inserted into the other end of the scraper shaft core (21), and the scraper support end (23) and the scraper (22) are engaged and connected, and the scraper shaft core (21) and the scraper support end (23) are fixed via the first locking nut (24).

3. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to claim 2, characterized in that: The combined scraper assembly (2) further comprises a second locking nut (26), and the scraper (22) is connected to the scraper support end (23) via the second locking nut (26); in the step S1, after the scraper shaft core (21) and the scraper support end (23) are fixed via the first locking nut (24), the position of the scraper (22) is adjusted to the center position of the scraper shaft core (21), and the scraper (22) and the scraper support end (23) are fixed via the second locking nut (26); the first locking nut (24) and the second locking nut (26) are arranged in an offset manner.

4. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to claim 1, characterized in that: The process of adjusting the position of the lip (25) of the scraper (22) by means of the scraper seat assembly (1) and the scraper angle adjustment assembly (3) in step S3 is as follows: after the scraper angle adjustment assembly (3) passes through the scraper seat assembly (1), the position of the lip (25) of the scraper (22) is adjusted; a connecting shaft (11) is arranged in the scraper seat assembly (1); the scraper angle adjustment assembly (3) comprises an adjustment handle; one end of the scraper angle adjustment assembly (3) is connected to the scraper shaft core (21) via the connecting shaft (11) in the scraper seat assembly (1), thereby adjusting the position of the lip (25) of the scraper (22).

5. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to any one of claims 1 to 4, characterized in that: The scraper (22) is provided with two groups of first threaded holes which are radially symmetrical and linearly equidistantly arranged, and the internal threads of the first threaded holes match the external threads of the external differential screw (51).

6. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to claim 5, characterized in that: The first threaded hole is located next to the lip (25).

7. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to claim 5, characterized in that: The scraper shaft core (21) is provided with two groups of second threaded holes which are radially symmetrical and linearly equidistantly arranged, and the internal threads of the second threaded holes match the external threads of the internal differential screw (52).

8. The device for adjusting the straightness of the lip of the comma blade for transfer coating according to claim 7, characterized in that: The positions and intervals of the second threaded holes correspond to the positions and intervals of the first threaded holes respectively.

9. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to any one of claims 1 to 4, characterized in that: The scraper angle adjustment component (3) comprises an adjustment handle, and one end of the scraper angle adjustment component (3) is connected to the scraper shaft core (21) via a connecting shaft (11) in the scraper seat component (1).

10. The device for adjusting the straightness of the lip of the comma scraper for transfer coating according to any one of claims 1 to 4, characterized in that: In the step S4, when the light leakage detection value is not lower than a preset light leakage threshold, the inner differential screw (52) is adjusted by rotating the outer differential screw (51) at the light leakage position where the light leakage detection value is not lower than the preset light leakage threshold, so that the distance between the scraper shaft core (21) and the scraper (22) changes, and a strain area is formed relative to the non-rotated outer differential screw (51), so as to drive the straightness of the lip (25) of the strain area to change.

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