Coating width measuring device and coating machine

Abstract

The utility model relates to the technical field of coating area detection, in particular to a coating width measuring device and a coating machine. The coating width measuring device comprises a supporting mechanism, a laser distance measuring sensor, a laser reflector and two aligning mechanisms, the supporting mechanism is used for being installed above a conveying roller set of a coating machine body, and the aligning mechanism is installed on the supporting mechanism. The two alignment mechanisms are located on the same horizontal straight line, the horizontal distance between the two alignment mechanisms is adjustable, and the two alignment mechanisms can be aligned with the boundaries of the two coating areas correspondingly; the laser distance measuring sensor and the laser reflector are installed on the two alignment mechanisms respectively, and the laser distance measuring sensor is provided with a display component for displaying coating width data. The coating width measuring device can directly measure the coating width of the membrane electrode material in the conveying process, equipment does not need to be shut down in the measuring process, a coating machine is prevented from being shut down repeatedly, it is guaranteed that the coating process can be continuously carried out, and therefore the production efficiency of the coating process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating area detection, in particular to a coating width measuring device and a coating machine. Background Art

[0002] In the catalyst layer coating process of membrane electrode materials, the coating width will affect the performance of the membrane electrode material, and then affect the performance of the fuel cell, so the coating width control is extremely important. However, the coating width often fluctuates, so in order to ensure the coating quality, the coating width needs to be measured frequently.

[0003] When measuring the coating area of ​​the membrane electrode material, the coating machine needs to be temporarily shut down, and then the measurement personnel use the measuring tool to measure the width of the coating area, and restart the coating machine after the measurement is completed.

[0004] In this manual measurement method, the production efficiency of the coating process is low due to the need to repeatedly shut down and start the equipment. Utility Model Content

[0005] The utility model aims to overcome the problem in the prior art that manual measurement of the coating area leads to reduced production efficiency of the coating process.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a coating width measuring device on the one hand, which includes a supporting mechanism, a laser ranging sensor, a laser reflector and two alignment mechanisms; the supporting mechanism is used to be installed above the conveying roller group of the coating machine body, and the alignment mechanism is installed on the supporting mechanism; the two alignment mechanisms are located on the same horizontal straight line and the horizontal spacing between them is adjustable, and the two alignment mechanisms can be respectively aligned with the boundaries of the two coating areas; the laser ranging sensor and the laser reflector are respectively installed on the two alignment mechanisms, and the laser ranging sensor has a display component that can display the coating width data.

[0007] In some embodiments, the alignment mechanism includes a base plate and a position adjustment mechanism, a laser ranging sensor or a laser reflector is installed on the horizontally extending base plate, the base plate is installed on the supporting mechanism through the position adjustment mechanism, and the position adjustment mechanism can adjust the horizontal position of the base plate, and a laser marker for aligning the boundary of the coating area is fixedly installed on the base plate.

[0008] In some embodiments, the position adjustment mechanism includes a guide rail, a slider, a mounting platform and an adjustment rod; the guide rail is fixedly installed on the support mechanism, the length direction of the guide rail is parallel to the axis of the conveying roller group of the coater body, the slider is slidably installed on the top of the guide rail, the mounting platform is fixedly installed on one end of the guide rail, the adjustment rod horizontally passes through the mounting platform and can rotate in the mounting platform, the adjustment rod is provided with two limit blocks, and the two limit blocks are respectively located on both sides of the mounting platform in the length direction of the guide rail; the part of the adjustment rod facing the slider is threadedly connected to the slider, the adjustment rod is provided with a rotating wheel, and the mounting platform is located between the rotating wheel and the slider.

[0009] In some embodiments, two extension plates are provided at the bottom of the slider, and the two extension plates are respectively located on both sides of the width direction of the guide rail. The extension plates are provided with long holes extending along the length direction of the guide rail. The two sides of the guide rail in its width direction are respectively provided with horizontally extending guide screws, and the two guide screws pass through the two long holes respectively.

[0010] In some embodiments, the laser marker is mounted on a side of the base plate, and the laser emitting end of the laser marker is vertically downward.

[0011] In some embodiments, a horizontally extending extension block is provided on the side of the bottom plate, and a positioning hole extending vertically through the extension block is provided, and the laser marker is fixedly installed in the positioning hole.

[0012] In some embodiments, the laser reflector includes a base and a reflective plate, the base is installed on the top surface of the corresponding base plate, the reflective plate is vertically connected to the base and extends vertically, the side of the reflective plate facing the laser ranging sensor is a laser reflecting surface, the laser ranging sensor is installed on the top surface of the corresponding base plate, and the laser emitting and receiving part of the laser ranging sensor faces the laser reflecting surface.

[0013] In some embodiments, the laser reflecting surface and the laser emitting end of the corresponding laser marker are located in the same vertical plane; the laser emitting and receiving part of the laser ranging sensor and the laser emitting end of the corresponding laser marker are located in the same vertical plane.

[0014] In some embodiments, the support mechanism includes a crossbeam and an annular support frame, the alignment mechanism is installed on the crossbeam, the crossbeam is installed on the top surface of the support frame, the length direction of the crossbeam is consistent with the length direction of the support frame, and the alignment mechanism is located above the hollow area of ​​the support frame.

[0015] Another aspect of the utility model provides a coating machine, which comprises a coating machine body and the coating width measuring device. The coating width measuring device is installed above the conveying roller group of the coating machine body.

[0016] The above technical solution of the utility model has the following beneficial effects:

[0017] The support mechanism can be installed above the conveying roller group of the coating machine body. During the process of conveying the coated membrane electrode material, if it is necessary to measure the width of the coating area, the horizontal spacing of the two alignment mechanisms can be adjusted so that the two alignment mechanisms are aligned with the boundaries of the two coating areas respectively, so that the spacing between the two alignment mechanisms is equal to the width of the coating area. Then the laser ranging sensor installed on one of the alignment mechanisms emits a laser signal to the laser reflector installed on the other alignment mechanism. The laser ranging sensor calculates the spacing between the two alignment mechanisms based on the return time of the laser signal, and then obtains the width data of the coating area. Therefore, the coating width measuring device can directly measure the coating width of the membrane electrode material during the conveying process without shutting down the equipment during the measurement, avoiding the repeated shutdown of the coating machine, ensuring that the coating process can be carried out continuously, thereby improving the production efficiency of the coating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a coating width measuring device measuring the width of a coating area in one embodiment of the utility model;

[0019] Figure 2 It is a three-dimensional schematic diagram of a coating width measuring device in one embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation of a laser distance measuring sensor and a laser reflector in one embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation of a laser distance measuring sensor and a laser reflector in one embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the installation of the position adjustment mechanism in one embodiment of the utility model.

[0023] Description of Reference Numerals

[0024] 1. Support mechanism; 11. Support frame; 12. Crossbeam; 2. Laser ranging sensor; 3. Laser reflector; 31. Base; 32. Reflection plate; 4. Alignment mechanism; 41. Bottom plate; 411. Extension block; 42. Position adjustment mechanism; 421. Guide rail; 422. Slider; 423. Mounting table; 424. Adjustment rod; 425. Limit block; 426. Rotating wheel; 427. Extension plate; 428. Long hole; 429. Guide screw; 43. Laser marker; 5. Coating machine body; 51. Conveying roller group; 6. Membrane electrode material; 61. Coating area. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the utility model will be described in detail below. In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the utility model, rather than to limit the utility model. For those skilled in the art, the utility model can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the utility model by showing examples of the utility model.

[0026] like Figures 1 to 4 As shown, the utility model provides a coating width measuring device, which includes a supporting mechanism 1, a laser ranging sensor 2, a laser reflector 3 and two alignment mechanisms 4; the supporting mechanism 1 is used to be installed above the conveying roller group 51 of the coating machine body 5, and the alignment mechanism 4 is installed on the supporting mechanism 1; the two alignment mechanisms 4 are located on the same horizontal straight line and the horizontal spacing between them is adjustable, and the two alignment mechanisms 4 can be respectively aligned with the boundaries of the two coating areas 61; the laser ranging sensor 2 and the laser reflector 3 are respectively installed on the two alignment mechanisms 4, and the laser ranging sensor 2 has a display component that can display the coating width data.

[0027] Specifically, the support mechanism 1 can be installed above the conveying roller group 51 of the coating machine body 5, so that the alignment mechanism 4, the laser distance sensor 2 and the laser reflector 3 are vertically spaced apart from the coating area 61 to prevent the coating area 61 from being damaged during the measurement process. The two alignment mechanisms 4 are located on the same horizontal straight line and the horizontal spacing between the two is adjustable, so the two alignment mechanisms 4 can be distributed in the width direction of the coating area 61, and the two can be aligned with the boundaries of the two coating areas 61 respectively. After the two alignment mechanisms 4 are aligned with the boundaries of the two coating areas 61 respectively, the coating width can be obtained by measuring the spacing between the two alignment mechanisms 4.

[0028] In this embodiment, the support mechanism 1 can be installed above the conveying roller group 51 of the coating machine body 5. In the process of conveying the coated membrane electrode material 6, if it is necessary to measure the width of the coating area 61, the horizontal spacing of the two alignment mechanisms 4 can be adjusted so that the two alignment mechanisms 4 are respectively aligned with the boundaries of the two coating areas 61, so that the spacing between the two alignment mechanisms 4 is equal to the width of the coating area 61. Then the laser distance sensor 2 installed in one of the alignment mechanisms 4 emits a laser signal to the laser reflector 3 installed in the other alignment mechanism 4. The laser distance sensor 2 calculates the spacing between the two alignment mechanisms 4 according to the return time of the laser signal, and then obtains the width data of the coating area 61, and displays the coating width data at the display component. Therefore, the coating width measuring device can directly measure the coating width of the membrane electrode material 6 during the conveying process without shutting down the equipment during the measurement, avoiding the coating machine from being shut down repeatedly, ensuring that the coating process can be carried out continuously, thereby improving the production efficiency of the coating process.

[0029] In some embodiments, the display component can be a display screen capable of displaying coating width data. In some other embodiments, the coating width measuring device can also include a display connected to the laser ranging sensor 2 signal, and the display can display the coating width data calculated by the laser ranging sensor 2. In some other embodiments, the laser ranging sensor 2 can be connected to the handheld mobile terminal of the staff, and the laser ranging sensor 2 can send the coating width data to the handheld mobile terminal.

[0030] like Figures 1 to 4 As shown, in some embodiments of the utility model, the alignment mechanism 4 includes a base plate 41 and a position adjustment mechanism 42, the laser ranging sensor 2 or the laser reflector 3 is installed on the horizontally extended base plate 41, the base plate 41 is installed on the supporting mechanism 1 through the position adjustment mechanism 42, and the position adjustment mechanism 42 can adjust the horizontal position of the base plate 41, and a laser marker 43 for aligning the boundary of the coating area 61 is fixedly installed on the base plate 41.

[0031] Specifically, there are two alignment mechanisms 4, the bottom plate 41 of one alignment mechanism 4 is used to install the laser distance sensor 2, and the bottom plate 41 of the other alignment mechanism 4 is used to install the laser reflector 3. When the position of the position adjustment mechanism 42 is adjusted, the position of the bottom plate 41 installed on the position adjustment mechanism 42 will change accordingly, and the position of the laser marker 43 installed on the bottom plate 41 will also change.

[0032] In this embodiment, by adjusting the positions of the two position adjustment mechanisms 42, the light of the two laser markers 43 is aligned with the boundaries of the two coating areas 61, and the laser distance sensor 2 emits a laser signal to the laser reflector 3, and the laser distance sensor 2 determines the width of the coating area 61 according to the reflection of the laser signal. It should be noted that the laser distance sensor 2, the laser reflector 3 and the laser marker 43 can be common devices in the field, and the present utility model will not repeat their structures and principles.

[0033] It should be noted that the alignment mechanism 4 can be any other structural form that can achieve the above technical effects, and the present invention does not limit this.

[0034] like Figures 2 to 5 As shown, in some embodiments of the utility model, the guide rail 421 is fixedly installed on the supporting mechanism 1, the length direction of the guide rail 421 is parallel to the axis of the conveying roller group 51 of the coater body 5, the slider 422 is slidably installed on the top of the guide rail 421, the mounting platform 423 is fixedly installed on one end of the guide rail 421, the adjusting rod 424 horizontally passes through the mounting platform 423 and can rotate in the mounting platform 423, the adjusting rod 424 is provided with two limit blocks 425, and the two limit blocks 425 are respectively located on both sides of the mounting platform 423 in the length direction of the guide rail 421; the part of the adjusting rod 424 facing the slider 422 is threadedly connected to the slider 422, the adjusting rod 424 is provided with a rotating wheel 426, and the mounting platform 423 is located between the rotating wheel 426 and the slider 422.

[0035] Specifically, the adjusting rod 424 includes a first rod segment, a second rod segment and a third rod segment connected in sequence. The mounting platform 423 is located between the first rod segment and the slider 422, and the rotating wheel 426 is installed on the first rod segment. The second rod segment is horizontally inserted into the mounting platform 423, and the second rod segment can rotate relative to the mounting platform 423. Two limit blocks 425 are installed on the second rod segment at intervals, one of which is in contact with a side of the mounting platform 423 facing the rotating wheel 426, and the other limit block 425 is in contact with a side of the mounting platform 423 facing the slider 422. The two limit blocks 425 can limit the axial movement of the adjusting rod 424. The slider 422 is provided with a threaded hole extending along the length direction of the guide rail 421, and the third rod segment is threadedly connected to the threaded hole.

[0036] In this embodiment, the adjusting rod 424 is threadedly connected to the slider 422, and the threaded connection structure can convert the rotation of the adjusting rod 424 into linear movement. Therefore, by rotating the rotating wheel 426, the slider 422 can be driven to move linearly along the guide rail 421, and the linear movement of the slider 422 will drive the bottom plate 41 to move linearly, thereby aligning the laser marker 43 on the bottom plate 41 with the boundary of the coating area 61, that is, aligning the light of the laser marker 43 with the boundary of the coating area 61.

[0037] like Figures 2 to 5 As shown, in some embodiments of the utility model, two extension plates 427 are provided at the bottom of the slider 422, and the two extension plates 427 are respectively located on both sides of the width direction of the guide rail 421, and the extension plates 427 are provided with long holes 428 extending along the length direction of the guide rail 421, and the two sides of the guide rail 421 in its width direction are respectively provided with horizontally extending guide screws 429, and the two guide screws 429 pass through the two long holes 428 respectively.

[0038] Specifically, the extension plate 427 extends vertically, and the two extension plates 427 are respectively located on both sides of the width direction of the guide rail 421. The extension plate 427 has a limiting function to prevent the slider 422 from being separated from the guide rail 421. In addition, the guide screw 429 has a guiding function, and the cooperation between the long hole 428 and the guide screw 429 ensures that the slider 422 can move stably in a straight line.

[0039] like Figures 2 to 4 As shown, in some embodiments of the present invention, the laser marker 43 is installed on the side of the bottom plate 41, and the laser emitting end of the laser marker 43 is vertically downward.

[0040] Specifically, the laser ranging sensor 2 and the laser reflector 3 are both installed on the top surface of the base plate 41, so the laser marker 43 is installed on the side of the base plate 41, and the laser ranging sensor 2 or the laser reflector 3 will not interfere with the disassembly and assembly of the laser marker 43, and the two laser signals will not affect each other.

[0041] like Figures 2 to 4 As shown, in some embodiments of the utility model, a horizontally extending extension block 411 is provided on the side of the bottom plate 41, and the extension block 411 is provided with a positioning hole extending vertically through, and the laser marker 43 is fixedly installed in the positioning hole. The bottom plate 41 and the extension block 411 can be connected by an integral molding method or a welding method. The extension block 411 is specifically used to install the laser marker 43 to prevent the laser ranging sensor 2 or the laser reflector 3 from interfering with the disassembly and assembly of the laser marker 43. In addition, the installation method of the laser marker 43 helps to align the light of the laser marker 43 with the boundary of the coating area 61.

[0042] In some embodiments, the light of the laser marker 43 may be in a dot shape, a cross shape, a straight line shape, etc., so that the light is aligned with the boundary of the coating area 61 .

[0043] like Figures 2 to 4As shown, in some embodiments of the utility model, the laser reflector 3 includes a base 31 and a reflecting plate 32, the base 31 is installed on the top surface of the corresponding bottom plate 41, the reflecting plate 32 is vertically connected to the base 31 and extends vertically, the side of the reflecting plate 32 facing the laser ranging sensor 2 is a laser reflecting surface, the laser ranging sensor 2 is installed on the top surface of the corresponding bottom plate 41, and the laser emitting and receiving part of the laser ranging sensor 2 faces the laser reflecting surface.

[0044] Specifically, the laser reflector 3 is an L-shaped plate. The base 31 is a horizontally extending plate, and the reflector 32 is vertically connected to the base 31. The reflector 32 can be stably connected to the top surface of the bottom plate 41 through the bottom plate 41. The laser transmitting and receiving part of the laser ranging sensor 2 can transmit a laser signal to the laser reflecting surface, and the laser reflecting surface reflects the laser signal back to the laser transmitting and receiving part of the laser ranging sensor 2. The laser ranging sensor 2 can calculate the width of the coating area 61 according to the signal transmission time.

[0045] like Figure 3 As shown, in some embodiments of the utility model, the laser reflection surface and the laser emitting end of the corresponding laser marker 43 are located in the same vertical plane; the laser emitting and receiving part of the laser distance sensor 2 and the laser emitting end of the corresponding laser marker 43 are located in the same vertical plane. Therefore, the distance between the laser reflection surface and the laser emitting and receiving part of the laser distance sensor 2 is equal to the distance between the laser emitting ends of the two laser markers 43. Since the laser emitting end of the laser marker 43 can emit light aligned with the boundary of the coating area 61, when the laser emitting ends of the two laser markers 43 are respectively aligned with the boundaries of the two coating areas 61, the distance between the laser emitting ends of the two laser markers 43 is equal to the width of the coating area 61, and then the distance between the laser reflection surface and the laser emitting and receiving part of the laser distance sensor 2 will also be equal to the width of the coating area 61. According to the transmission time of the laser signal, the laser distance sensor 2 can easily and directly obtain the width of the coating area 61.

[0046] In other embodiments, the laser reflection surface and the laser emitting end of the corresponding laser marker 43 are not in the same vertical plane; similarly, the laser emitting and receiving part of the laser distance sensor 2 and the laser emitting end of the corresponding laser marker 43 are not in the same vertical plane. In this way, there is always a fixed difference between the distance between the laser emitting ends of the two laser markers 43 and the distance between the laser reflection surface and the laser emitting and receiving part of the laser distance sensor 2. The fixed difference is set in the operation system of the laser distance sensor 2. The laser distance sensor 2 obtains the distance between the laser reflection surface and the laser emitting and receiving part of the laser distance sensor 2 according to the transmission time of the laser signal, and then calculates the distance between the laser emitting ends of the two laser markers 43 through the distance and the above-mentioned fixed difference, thereby obtaining the width of the coating area 61.

[0047] like Figure 2 As shown, in some embodiments of the utility model, the support mechanism 1 includes a cross beam 12 and an annular support frame 11, the alignment mechanism 4 is installed on the cross beam 12, the cross beam 12 is installed on the top surface of the support frame 11, the length direction of the cross beam 12 is consistent with the length direction of the support frame 11, and the alignment mechanism 4 is located above the hollow area of ​​the support frame 11.

[0048] Specifically, the support frame 11 can be installed above the conveying roller group 51 of the coating machine body 5, and the hollow area of ​​the support frame 11 is opposite to the conveying roller group 51. The length direction of the support frame 11 and the length direction of the crossbeam 12 are consistent with the axis of the conveying roller group 51. The alignment mechanism 4 is located above the hollow area of ​​the support frame 11 to ensure that the detection signal of the alignment mechanism 4 can detect the boundary of the coating area 61. In addition, the two alignment mechanisms 4 can adjust their positions on the crossbeam 12 so that the two alignment mechanisms 4 can be aligned with the boundaries of the coating area 61 respectively.

[0049] In some embodiments, the guide rail 421 of the position adjustment mechanism 42 is installed on the top surface of the beam 12, and the extension block 411 and the laser marker 43 on the base plate 41 are facing the hollow area of ​​the support frame 11 to ensure that the light of the laser marker 43 can illuminate the boundary of the coating area 61.

[0050] like Figure 1 As shown, the utility model further provides a coater, which includes a coater body 5 and the coating width measuring device of the above embodiment, and the coating width measuring device is installed above the conveying roller group 51 of the coater body 5.

[0051] Specifically, the coater body 5 includes a first support plate and a second support plate that are horizontally spaced apart, the first support plate and the second support plate extend vertically, and the first support plate and the second support plate are connected by a connecting beam. One end of the conveying roller set 51 is rotatably connected to the first support plate, and the conveying roller set 51 extends from the first support plate to the second support plate. Of course, the first support plate and the second support plate are spaced apart along the axis of the conveying roller set 51. The coating width measuring device is installed on the top of the first support plate and the second support plate. During the conveying process of the membrane electrode material 6, the alignment mechanism 4 can be aligned with the boundary of the coating area 61.

[0052] In this embodiment, the coating machine adopts the coating width measuring device of the above embodiment, so the coating machine can also achieve the above technical effects.

[0053] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above are only preferred implementation methods of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A coating width measuring device, characterized in that: It comprises a supporting mechanism (1), a laser distance measuring sensor (2), a laser reflector (3) and two alignment mechanisms (4); The support mechanism (1) is used to be installed above the conveying roller group (51) of the coating machine body (5), and the alignment mechanism (4) is installed on the support mechanism (1); the two alignment mechanisms (4) are located on the same horizontal straight line and the horizontal distance between the two is adjustable, and the two alignment mechanisms (4) can be respectively aligned with the boundaries of two coating areas (61); the laser distance sensor (2) and the laser reflector (3) are respectively installed on the two alignment mechanisms (4), and the laser distance sensor (2) has a display component capable of displaying coating width data.

2. The coating width measuring device according to claim 1, characterized in that: The alignment mechanism (4) comprises a base plate (41) and a position adjustment mechanism (42); the laser distance measuring sensor (2) or the laser reflector (3) is mounted on the base plate (41) extending horizontally; the base plate (41) is mounted on the support mechanism (1) via the position adjustment mechanism (42); and the position adjustment mechanism (42) is capable of adjusting the horizontal position of the base plate (41); and a laser marker (43) for aligning the boundary of a coating area (61) is fixedly mounted on the base plate (41).

3. The coating width measuring device according to claim 2, characterized in that: The position adjustment mechanism (42) comprises a guide rail (421), a slider (422), a mounting platform (423) and an adjustment rod (424); The guide rail (421) is fixedly mounted on the support mechanism (1); the length direction of the guide rail (421) is parallel to the axis of the conveying roller group (51) of the coating machine body (5); the slider (422) is slidably mounted on the top of the guide rail (421); the mounting platform (423) is fixedly mounted on one end of the guide rail (421); the adjustment rod (424) horizontally passes through the mounting platform (423) and can rotate in the mounting platform (423); The adjusting rod (424) is provided with two limit blocks (425), and the two limit blocks (425) are respectively located on both sides of the mounting platform (423) in the length direction of the guide rail (421); the portion of the adjusting rod (424) facing the slider (422) is threadedly connected to the slider (422), the adjusting rod (424) is provided with a rotating wheel (426), and the mounting platform (423) is located between the rotating wheel (426) and the slider (422).

4. The coating width measuring device according to claim 3, characterized in that: Two extension plates (427) are provided at the bottom of the slider (422), and the two extension plates (427) are respectively located on both sides of the width direction of the guide rail (421), and the extension plates (427) are provided with long holes (428) extending along the length direction of the guide rail (421). The two side portions of the guide rail (421) in the width direction are respectively provided with horizontally extending guide screws (429), and the two guide screws (429) pass through the two long holes (428) respectively.

5. The coating width measuring device according to claim 3, characterized in that: The laser marker (43) is installed on the side of the bottom plate (41), and the laser emitting end of the laser marker (43) is vertically downward.

6. The coating width measuring device according to claim 3, characterized in that: A horizontally extending extension block (411) is provided on the side of the bottom plate (41), and the extension block (411) is provided with a positioning hole extending vertically through the extension block, and the laser marker (43) is fixedly installed in the positioning hole.

7. The coating width measuring device according to claim 2, characterized in that: The laser reflector (3) comprises a base (31) and a reflective plate (32); the base (31) is mounted on the top surface of the corresponding bottom plate (41); the reflective plate (32) is vertically connected to the base (31) and extends vertically; a surface of the reflective plate (32) facing the laser distance measuring sensor (2) is a laser reflection surface; the laser distance measuring sensor (2) is mounted on the top surface of the corresponding bottom plate (41); and a laser emitting and receiving part of the laser distance measuring sensor (2) faces the laser reflection surface.

8. The coating width measuring device according to claim 7, characterized in that: The laser reflection surface and the laser emitting end of the corresponding laser marker (43) are located in the same vertical plane; the laser emitting and receiving part of the laser distance measuring sensor (2) and the laser emitting end of the corresponding laser marker (43) are located in the same vertical plane.

9. The coating width measuring device according to claim 1, characterized in that: The support mechanism (1) comprises a crossbeam (12) and an annular support frame (11); the alignment mechanism (4) is mounted on the crossbeam (12); the crossbeam (12) is mounted on the top surface of the support frame (11); the length direction of the crossbeam (12) is consistent with the length direction of the support frame (11); and the alignment mechanism (4) is located above a hollow area of ​​the support frame (11).

10. A coating machine, characterized in that: The coating width measuring device comprises a coating machine body (5) and a coating width measuring device according to any one of claims 1 to 9, wherein the coating width measuring device is installed above a conveying roller group (51) of the coating machine body (5).

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