coater

By installing coating and inspection devices inside the coating machine and utilizing the linkage of the conveyor device, coating and inspection can be completed in the same chassis, solving the problem of uncontrollable coating quality, saving floor space, and improving space utilization.

CN224559192UActive Publication Date: 2026-07-28GD MIDEA AIR CONDITIONING EQUIP CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GD MIDEA AIR CONDITIONING EQUIP CO LTD
Filing Date
2025-07-30
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

Existing coating machines cannot control the coating quality when coating PCB boards, and cannot detect it in real time, which requires additional coating AOI inspection and increases the floor space required.

Method used

The coating machine is equipped with a coating device and a testing device. The PCB board is conveyed in the machine through a conveying device. The coating device performs coating near the input port, and the testing device performs quality testing near the output port, so that coating and testing can be completed in the same machine.

Benefits of technology

No additional testing equipment is required, saving floor space and improving the space utilization of the PCB coating and processing production line.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224559192U_ABST
    Figure CN224559192U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of coating machines, it is related to PCB processing technical field, wherein, coating machine includes cabinet, conveying device, coating device and detection device;The cabinet has input and output, the input is used to input the PCB board to be coated, the output is used to output the PCB board after detection, the conveying device is located in the cabinet, for conveying PCB board between the input and the output, the coating device is located in the cabinet, and it is close to the input setting, the coating device is used to carry out coating operation to the PCB board on the conveying device, the detection device is located in the cabinet, and it is close to the output setting, the detection device is used to carry out coating quality detection to the PCB board after coating on the conveying device;The technical scheme provided by the utility model can save the floor area of PCB coating processing production line, improve the space utilization of PCB coating processing production line.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of PCB processing technology, and in particular to a coating machine. Background Technology

[0002] PCB boards require coating during processing. However, existing coating machines cannot control the coating quality and cannot obtain the coating quality of the PCB board. If inspection is required, an additional coating AOI is needed, which increases the overall footprint. Utility Model Content

[0003] The main purpose of this invention is to propose a coating machine that aims to save the floor space of PCB coating processing lines and improve the space utilization rate of PCB coating processing lines.

[0004] To achieve the above objectives, the coating machine proposed in this utility model includes:

[0005] The chassis has an input port and an output port. The input port is used to input the PCB board to be coated, and the output port is used to output the PCB board after testing.

[0006] A conveying device, located inside the chassis, is used to convey PCB boards between the input port and the output port;

[0007] A coating device, located inside the chassis and near the input port, is used to perform coating operations on the PCB board on the conveying device; and

[0008] The detection device is located in the chassis and near the output port. The detection device is used to detect the coating quality of the PCB board coated on the conveying device.

[0009] In one embodiment, the conveying device includes a first conveying component and a second conveying component arranged sequentially along the conveying direction. The input end of the first conveying component faces the input port, and the output end of the second conveying component faces the output port. The output end of the first conveying component is connected to the input end of the second conveying component. The coating device is used to coat the PCB board located on the first conveying component, and the detection device is used to detect the PCB board located on the second conveying component.

[0010] In one embodiment, the coating device is located on one side of the conveying device along the Z-axis, and the detection device is located on the side of the coating device away from the conveying device along the Z-axis.

[0011] In one embodiment, the coating machine further includes a receiving member disposed in the chassis, the receiving member having a receiving cavity, the receiving cavity having a detection port facing the second conveying component, the detection device including a detection component and a viewing element, the detection component being disposed in the receiving cavity and facing the detection port, and the viewing element covering the detection port.

[0012] In one embodiment, the receiving member is disposed on the outer surface of the chassis, and the chassis has an opening that corresponds to and communicates with the detection port.

[0013] In one embodiment, the detection component includes a camera, a lens, and a light source. The lens is disposed at the imaging end of the camera and faces the detection port, and the light-emitting end of the light source faces the detection port.

[0014] In one embodiment, the coating apparatus includes a coating output component and a moving mechanism. The moving mechanism includes a first moving component and a second moving component. The first moving component is used to drive the coating output component to move in the XY plane, and the second moving component is used to drive the coating output component to move along the Z-axis direction, which is perpendicular to the XY plane.

[0015] In one embodiment, the first moving component includes a first sub-moving component and a second sub-moving component, the first sub-moving component being used to drive the coating output component to move along the X-axis direction, and the second sub-moving component being used to drive the coating output component to move along the Y-axis direction.

[0016] In one embodiment, the coating machine further includes a screening device disposed on one side of the chassis. The screening device includes a waste storage component, a third conveying component, and a switching drive component. The waste storage component is used to store PCBs with unqualified coating quality. The waste storage component has a receiving station that docks with the third conveying component and a storage station away from the receiving station. The switching drive component is used to switch the waste storage component between the receiving station and the storage station. The third conveying component is used to receive PCBs from the output port and convey PCBs with unqualified coating quality to the waste storage component.

[0017] In one embodiment, the coating machine further includes a control device electrically connected to both the coating apparatus and the detection device.

[0018] The technical solution of this utility model involves setting up a coating device and a testing device inside the casing of a coating machine, and setting up a conveying device inside the casing. The conveying device transports PCB boards from the input port to the output port, allowing the coating device to perform coating operations on the PCB boards on the conveying device near the input port, and allowing the testing device to perform coating quality testing on the PCB boards on the conveying device near the output port. In this way, the coating and testing of PCB boards can be carried out in the same casing through the linkage of the conveying device, eliminating the need for an additional testing machine to perform coating quality testing on the coated PCB boards. This can save the floor space of the PCB board coating processing production line and improve the space utilization rate of the PCB board coating processing production line. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the coating machine provided by this utility model;

[0021] Figure 2 for Figure 1 Schematic diagram showing the installation of the intermediate coating device and the testing device within the chassis;

[0022] Figure 3 for Figure 2 Internal structure diagram of the mid-chassis;

[0023] Figure 4 for Figure 3 A schematic diagram showing the layout of the coating and testing devices;

[0024] Figure 5 for Figure 4 A schematic diagram of the structure of an embodiment of the transmission device;

[0025] Figure 6 for Figure 4 A schematic diagram of the structure of an embodiment of the detection device;

[0026] Figure 7 for Figure 1 A schematic diagram of one embodiment of the screening device.

[0027] Explanation of icon numbers:

[0028] 100. Coating machine; 101. Input port; 102. Output port; 10. Chassis; 20. Coating device; 21. Coating output component; 22. Moving mechanism; 221. First moving component; 221a. First sub-moving component; 221b. Second sub-moving component; 222. Second moving component; 30. Detection device; 31. Detection component; 311. Camera; 312. Lens; 313. Light source; 32. Perspective component; 33. Mounting bracket; 40. Conveying device; 41. First conveying component; 42. Second conveying component; 50. Receiving component; 60. Screening device; 61. Waste storage component; 62. Third conveying component; 63. Switching drive component.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] When the PCB board is processed, a coating operation needs to be carried out. When the existing coating machine performs the coating operation on the PCB board, the coating quality is uncontrollable, and the coating quality of the PCB board cannot be obtained. If detection is required, additional coating AOI needs to be added for detection, resulting in an increase in the overall floor area.

[0034] The utility model provides a coating machine.

[0035] Please refer to Figures 1 to 7 As shown, in an embodiment of the utility model, the coating machine includes a chassis 10, a conveying device 40, a coating device 20, and a detection device 30; the chassis 10 has an input port 101 and an output port 102. The input port 101 is used to input the PCB board to be coated, and the output port 102 is used to output the detected PCB board. The conveying device 40 is arranged in the chassis 10 and is used to convey the PCB board between the input port 101 and the output port 102. The coating device 20 is arranged in the chassis 10 and is close to the input port 101. The coating device 20 is used to perform a coating operation on the PCB board on the conveying device 40. The detection device 30 is arranged in the chassis 10 and is close to the output port 102. The detection device 30 is used to detect the coating quality of the coated PCB board on the conveying device 40.

[0036] In the utility model, the detection device 30 can be set as an industrial camera. By taking pictures of the coated PCB board with the industrial camera, the image information of the coated PCB board is obtained and compared with the pre-stored information in the database. When the comparison is qualified, it indicates that the coating quality is qualified. The coating device 20 can include multiple coating spray guns, and multiple coating spray guns can perform coating on multiple positions on the PCB board simultaneously. The conveying device 40 can be set as a conveyor chain. The conveyor chain extends from the input port 101 to the output port 102 in the chassis 10. When the PCB board enters the chassis 10 from the input port 101, it moves towards the output port 102 through the conveyor chain. In this case, the coating device 20 can perform a coating operation on the PCB board on the conveyor chain near the input port 101 side. The coated PCB board moves towards the output port 102 through the conveyor chain, and the coating quality can be detected by the detection device 30 near the output port 102 position.

[0037] With such a setting, the coating operation of the PCB board and the coating quality detection operation of the coated PCB board can be carried out in the same coating machine 100. Through the conveyor device 40自带 in the coating machine 100, the coated PCB board can be conveyed to the working area of the detection device 30. By making the conveyor device 40 cooperate with the detection device 30, the coating quality detection can be realized. There is no need to set an additional coating detection machine outside the coating machine 100 for coating quality detection, which can save floor area and improve space utilization rate.

[0038] This invention provides a coating device 20 and a testing device 30 within the chassis 10 of a coating machine 100, and a conveying device 40 within the chassis 10. The conveying device 40 transports PCB boards from the input port 101 to the output port 102. The coating device 20 can perform coating operations on the PCB boards on the conveying device 40 near the input port 101, and the testing device 30 can perform coating quality testing on the PCB boards on the conveying device 40 near the output port 102. In this way, the coating and testing of the PCB boards can be carried out in the same chassis 10 through the linkage of the conveying device 40, eliminating the need for an additional testing machine to perform coating quality testing on the coated PCB boards. This saves floor space in the PCB board coating processing production line and improves the space utilization rate of the PCB board coating processing production line.

[0039] To ensure that the coating and testing operations inside the chassis 10 can operate independently without interference, such as Figure 4 , Figure 5 As shown, in one embodiment, the conveying device 40 includes a first conveying component 41 and a second conveying component 42 arranged sequentially along the conveying direction. The input end of the first conveying component 41 faces the input port 101, and the output end of the second conveying component 42 faces the output port 102. The output end of the first conveying component 41 is connected to the input end of the second conveying component 42. The coating device 20 is used to coat the PCB board located on the first conveying component 41, and the detection device 30 is used to detect the PCB board located on the second conveying component 42.

[0040] It is understandable that the first conveying component 41 and the second conveying component 42 can each be driven by independent drivers. That is, when the first conveying component 41 is conveying the PCB board, the second conveying component 42 may not be working, and the PCB board on the second conveying component 42 may remain stationary. Alternatively, the first conveying component 41 may not be working, and the PCB board to be coated on the second conveying component 42 may remain stationary, allowing the coating device 20 to coat the PCB board. The second conveying component 42 can then transmit the inspected PCB board from the output port 102. In this way, the coating and inspection operations within the chassis 10 can be carried out independently by the independent operation of the first conveying component 41 and the second conveying component 42.

[0041] The conveying device 40 may further include two mounting frames that are spaced apart relative to each other along the Y-axis. The first conveying component 41 may include two first conveying chains that are spaced apart relative to each other along the Y-axis. Each first conveying chain is mounted on a corresponding mounting frame, and the upper end surfaces of the two first conveying chains constitute a conveying surface for conveying the PCB board. The second conveying component 42 may include two second conveying chains that are spaced apart relative to each other along the Y-axis. Each second conveying chain is mounted on a corresponding mounting frame, and the upper end surfaces of the two first conveying chains constitute a conveying surface for conveying the PCB board. The first and second conveying chains are arranged sequentially along the X-axis direction of PCB board conveying, and each of the first and second conveying chains is driven by an independent driving component.

[0042] like Figure 3 , Figure 4 As shown, in one embodiment, the coating device 20 is located on one side of the conveying device 40 along the Z-axis direction, and the detection device 30 is located on the side of the coating device 20 away from the conveying device 40 along the Z-axis direction.

[0043] The Z-axis direction can be set to the vertical direction. The coating device 20 is located above the conveying device 40, and the detection device 30 is located above the coating device 20. With this arrangement, the space in the height direction of the housing 10 can be used to place the detection device 30 outside the range of motion of the coating spray gun of the coating device 20. When the coating spray gun of the coating device 20 moves inside the housing 10, it will not interfere with the coating device 20.

[0044] To prevent interference between the coating spray gun of the coating device 20 and the inspection device 30 when moving within the chassis 10, the inspection device 30 can be further protruded outside the chassis 10. The inspection device 30 is located on the top outer side of the chassis 10, with an inspection port on the top wall of the chassis 10. This allows the inspection device 30 to inspect the coated PCB board through the inspection port. Because the inspection device 30 is located outside the chassis 10, it will not interfere with the coating spray gun when moving within the chassis 10. This allows for the utilization of vertical space to house the inspection device 30, further reducing the floor space required for the PCB coating production line while avoiding interference.

[0045] The installation of the detection device 30 will be further described below, such as... Figure 3 , Figure 4 , Figure 6 As shown, in one embodiment, the coating machine 100 further includes a receiving member 50 disposed in the housing 10, the receiving member 50 having a receiving cavity having a detection port facing the second conveying component 42, the detection device 30 including a detection component 31 and a transparent element 32, the detection component 31 being disposed in the receiving cavity and facing the detection port, and the transparent element 32 covering the detection port.

[0046] Among them, the detection component 31 can obtain the PCB board image through optical imaging to detect the coating quality of the PCB board. The perspective member 32 can be made of materials such as transparent glass or acrylic board. In this way, the detection component 31 of the detection device 30 can be arranged in the accommodation cavity of the accommodation member 50, and the detection port can be closed by the perspective member 32 of the detection device 30, so that the detection component 31 is in a sealed cavity. Thus, it can be avoided that the dust waste generated by the coating operation in the chassis 10 enters the accommodation cavity from the detection port, contaminating the detection component 31 and affecting the detection effect of the detection component 31. And the detection port is covered by the perspective member 32, which will not affect the optical imaging effect of the detection component 31, and thus will not affect the detection effect of the detection component 31.

[0047] Optionally, the accommodation member 50 is arranged on the outer surface of the chassis 10, and the chassis 10 has an opening corresponding to and communicating with the detection port. With such a setting, while the detection component 31 is fully enclosed and protected from pollution through the accommodation member 50 and the perspective member 32, by arranging the accommodation member 50 on the outer surface of the chassis 10, the detection device 30 can be located outside the moving range of the coating gun of the coating device 20, avoiding interference between the detection device 30 and the coating device 20.

[0048] Next, the composition structure of the detection component 31 will be further introduced. As Figure 6 shown, in an embodiment, the detection component 31 includes a camera 311, a lens 312 and a light source 313. The lens 312 is arranged at the imaging end of the camera 311 and faces the detection port, and the light-emitting end of the light source 313 faces the detection port. Among them, the coating machine 100 of the present invention may further include a control device, which is electrically connected to the camera 311. The light-emitting end of the light source 313 can emit a surface light source to the coated PCB board through the detection port to supplement light for the coated PCB board. The camera 311 can obtain the image information of the coated PCB board through the lens 312 and transmit the obtained image information to the control device. The control device compares the obtained PCB board image information with the pre-stored information in the database. If the comparison is qualified, it indicates that the coating quality of the PCB board is qualified; if the comparison is unqualified, it indicates that the coating quality is unqualified.

[0049] Among them, the detection device 30 further includes a mounting bracket 33. The mounting bracket 33 mounts and fixes the camera 311, the lens 312 and the light source 313 in the accommodation cavity of the accommodation member 50. The perspective member 32 can be arranged on the mounting bracket 33 and cover the detection port through the mounting bracket 33.

[0050] Next, the structure of the coating device 20 will be further introduced. As Figure 3 、 Figure 4As shown, in one embodiment, the coating apparatus 20 includes a coating output component 21 and a moving mechanism 22. The moving mechanism 22 includes a first moving component 221 and a second moving component 222. The first moving component 221 is used to drive the coating output component 21 to move in the XY plane, and the second moving component 222 is used to drive the coating output component 21 to move along the Z-axis direction, which is perpendicular to the XY plane.

[0051] The coating output component 21 can be configured as a coating spray gun, and the XY plane can be set parallel to the conveying surface of the first conveying component 41. There are several ways for the first moving component 221 to drive the coating output component 21 to move along the XY plane. For example, the first moving component 221 can be configured as a first sub-moving component 221a and a second sub-moving component 221b. The first sub-moving component 221a drives the coating output component 21 to move along the X-axis, and the second sub-moving component 221b drives the coating output component 21 to move along the Y-axis. The X-axis and Y-axis intersect to form the XY plane, allowing the coating output component 21 to move within the XY plane via the first moving component 221. Alternatively, the first moving component 221 can be configured with multiple swing arms connected sequentially end-to-end. Each swing arm can rotate around the Z-axis at its connection point with the previous swing arm. Multiple driving components can be configured to drive each swing arm to rotate around the Z-axis, with the coating output component 21 positioned at the output end of the last swing arm. The coating output component 21 can then move along the XY plane through the cooperation of multiple swing arms. No specific limitations are specified here.

[0052] With this setup, the coating output component 21 can be driven by the first moving component 221 to move in a plane parallel to the conveying surface of the first moving component 221, so that the first moving component 221 can move to the coating position opposite to the PCB board. Then, the coating output component 21 can be moved vertically by the second moving component 222 to the coating position close to the PCB board, so that the coating output component 21 can release coating material on the PCB board and perform coating operation on the PCB board.

[0053] The first moving component 221 is described below. The first moving component 221 includes a first sub-moving component 221a and a second sub-moving component 221b. The first sub-moving component 221a is used to drive the coating output component 21 to move along the X-axis direction, and the second sub-moving component 221b is used to drive the coating output component 21 to move along the Y-axis direction.

[0054] The first sub-moving component 221a may include an X-axis track and an X-axis drive, and the second sub-moving component 221b may include a Y-axis track and a Y-axis drive. The Y-axis track can be slidably mounted on the X-axis track along the X-axis direction, and the second moving component 222 can be slidably mounted on the Y-axis track along the Y-axis direction. The coating output component 21 can be disposed at the output end of the second moving component 222. The X-axis drive can drive the Y-axis track to move along the X-axis track, thereby driving the coating output component 21 to move along the X-axis direction. The Y-axis drive can drive the second moving component 222 to move along the Y-axis track, thereby driving the coating output component 21 to move along the Y-axis direction, thus realizing the movement of the coating output component 21 along the XY plane.

[0055] like Figure 1 , Figure 7 As shown, in one embodiment, the coating machine 100 further includes a screening device 60 disposed on one side of the chassis 10. The screening device 60 includes a waste storage component 61, a third conveying component 62, and a switching drive component 63. The waste storage component 61 is used to store PCBs with unqualified coating quality. The waste storage component 61 has a receiving station that docks with the third conveying component 62 and a storage station away from the receiving station. The switching drive component 63 is used to switch the waste storage component 61 between the receiving station and the storage station. The third conveying component 62 is used to receive PCBs from the output port 102 and convey PCBs with unqualified coating quality to the waste storage component 61.

[0056] With this setup, if the detection device 30 detects that the PCB board coating quality is unqualified, the PCB board with unqualified coating quality can be moved to the waste storage component 61 of the screening device 60 for temporary storage, so as to avoid the PCB board with unqualified coating quality occupying the second conveying component 42, which would prevent the subsequent coated PCB boards from being detected and the coated PCB boards from being unloaded and moved to the next processing station.

[0057] The third conveying component 62 may include a conveying roller driver and two rows of conveying roller groups arranged opposite each other along the Y-axis. Each conveying roller group may include multiple conveying rollers spaced apart along the X-axis. The conveying roller driver drives the multiple conveying rollers to rotate, so that the third conveying component 62 can receive the PCB board from the output port 102. The waste storage component 61 can be provided with multiple support protrusions spaced apart along the X-axis. Each support protrusion can be located between two adjacent conveyor rollers. The switching drive component 63 can be a cylinder. The multiple support protrusions can be located on two support plates that are spaced apart relative to each other along the Y-axis. The cylinder can drive the two support plates to move and lift along the Z-axis, thereby driving the multiple support protrusions to move and lift along the Z-axis. When the upper surface of the support protrusion is flush with the conveying surface formed by the top tangent of the multiple conveyor rollers, the waste storage component 61 is in the receiving position. The multiple conveyor rollers can move the PCB boards with unqualified coating quality to the multiple support protrusions. When the multiple support protrusions move to the bottom of the multiple conveyor rollers, the waste storage component 61 can be in the storage position to temporarily store the PCB boards with unqualified coating quality. The waste storage component 61 can also be provided with multiple sets of support protrusions along the Z-axis direction. Each set includes multiple support protrusions, so that the waste storage component 61 is provided with multiple support parts along the Z-axis direction. Each support part is used to place a PCB board with unqualified coating quality, so that the waste storage component 61 can temporarily store multiple PCB boards with unqualified coating quality.

[0058] When the waste storage component 61 is in the storage position, multiple conveyor rollers can continue to convey PCB boards with qualified coating quality, so that the third conveyor component 62 can be used to convey PCB boards with qualified coating quality to the next processing position, so that PCB boards with unqualified coating quality will not affect the operation of the coating machine.

[0059] Optionally, the coating machine 100 further includes a control device, which is electrically connected to the coating device 20 and the detection device 30 respectively. The control device can be an industrial computer, which, through its electrical connection to both the coating device 20 and the detection device 30, allows for the separate control of the coating device 20 and the detection device 30 by a single industrial computer. This reduces the number of components in the coating machine 100 and further reduces its size.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A coating machine, characterized in that, include: The chassis has an input port and an output port. The input port is used to input the PCB board to be coated, and the output port is used to output the PCB board after testing. A conveying device, located inside the chassis, is used to convey PCB boards between the input port and the output port; A coating device is located inside the chassis and near the input port. The coating device is used to coat the PCB board on the conveying device. as well as The detection device is located in the chassis and near the output port. The detection device is used to detect the coating quality of the PCB board coated on the conveying device.

2. The coating machine as described in claim 1, characterized in that, The conveying device includes a first conveying component and a second conveying component arranged sequentially along the conveying direction. The input end of the first conveying component faces the input port, and the output end of the second conveying component faces the output port. The output end of the first conveying component is connected to the input end of the second conveying component. The coating device is used to coat the PCB board located on the first conveying component, and the detection device is used to detect the PCB board located on the second conveying component.

3. The coating machine as described in claim 2, characterized in that, The coating device is located on one side of the conveying device along the Z-axis, and the detection device is located on the side of the coating device away from the conveying device along the Z-axis.

4. The coating machine as described in claim 3, characterized in that, The coating machine further includes a housing disposed in the chassis, the housing having a housing cavity having a detection port facing the second conveying component, the detection device including a detection component and a viewing element, the detection component being disposed in the housing cavity and facing the detection port, and the viewing element covering the detection port.

5. The coating machine as described in claim 4, characterized in that, The receiving element is disposed on the outer surface of the chassis, and the chassis has an opening that corresponds to and communicates with the detection port.

6. The coating machine as described in claim 4, characterized in that, The detection component includes a camera, a lens, and a light source. The lens is located at the imaging end of the camera and faces the detection port, and the light-emitting end of the light source faces the detection port.

7. The coating machine as described in claim 1, characterized in that, The coating device includes a coating output component and a moving mechanism. The moving mechanism includes a first moving component and a second moving component. The first moving component is used to drive the coating output component to move in the XY plane, and the second moving component is used to drive the coating output component to move along the Z-axis direction, which is perpendicular to the XY plane.

8. The coating machine as described in claim 7, characterized in that, The first moving component includes a first sub-moving component and a second sub-moving component. The first sub-moving component is used to drive the coating output component to move along the X-axis direction, and the second sub-moving component is used to drive the coating output component to move along the Y-axis direction.

9. The coating machine as described in any one of claims 2 to 8, characterized in that, The coating machine also includes a screening device located on one side of the chassis. The screening device includes a waste storage component, a third conveying component, and a switching drive component. The waste storage component is used to store PCBs with unqualified coating quality. The waste storage component has a receiving station that docks with the third conveying component and a storage station away from the receiving station. The switching drive component is used to switch the waste storage component between the receiving station and the storage station. The third conveying component is used to pick up PCBs from the output port and convey PCBs with unqualified coating quality to the waste storage component.

10. The coating machine according to any one of claims 2 to 8, characterized in that, The coating machine also includes a control device, which is electrically connected to both the coating device and the detection device.