Film thickness detection device of coating detection equipment

Abstract

The utility model provides a film thickness detection device of coating detection equipment, which comprises a detection assembly, and the detection assembly comprises a rack, an L-shaped support arm, a support plate, a mounting groove, an electric cylinder, an ejector rod, a connecting plate, a connecting hole, a connecting rod, a film tester and a test port. Through online automatic detection, the PCB does not need to be taken out from a production line, movement and manual contact of products in the production process are avoided, the risks that the products are polluted and secondary badness is caused are reduced, meanwhile, positioning and testing positions are more accurate through the camera module, the accuracy of each time of measurement is ensured, and the production efficiency is improved. The problem that sampling points are difficult to align accurately during manual measurement is solved, detection results are recorded automatically, manual input links are reduced, data authenticity and accuracy are improved, timed tasks can be set through the controller, quality control in the production process is ensured to be carried out strictly according to specified time intervals, and production efficiency is improved. And the situation of measurement delay caused by staff work arrangement is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB film thickness detection, in particular to a film thickness detection device for coating detection equipment. Background Art

[0002] The principle of the three-conformal coating process is to form a protective film on the surface of equipment or facilities to block the erosion of moisture, dust, and chemicals. Today, the automotive industry is the main field of three-conformal coating. Especially today when new energy vehicles are fully popularized, cars will encounter various severe weather and road conditions during use, such as rain, mud, salt spray, etc. Three-conformal coating can protect the important electrical systems of the car from corrosion and damage, and extend the service life of the car. Automotive electronics has extremely high requirements for product coating process standards. The coating process includes PCB cleaning machine cleaning the PCB surface, coating machine spraying three-conformal glue on the electronic components on the PCB surface, UV lamp curing glue, and finally coating detection. It is usually required that the coating cured dry film thickness is plus or minus 20um from the standard value to be qualified;

[0003] In the traditional production process of automotive electronics three-proof coating, the coating inspection equipment can only detect whether the components on the PCB surface are covered by the protective film and whether there is splashing three-proof glue in the prohibited coating area through professional camera lights. It cannot detect the thickness of the protective film after curing. It is necessary to use a professional dry film thickness measuring instrument to directly contact the protective film to measure the thickness of the protective film. According to the current three-proof coating production requirements of the automotive industry, the production line must measure the cured dry film thickness every two hours to see if it is within the standard range. At present, this measurement process is to manually take the cured PCB out of the production line for measurement, and manually record the measurement value. The current process has several defects:

[0004] 1. This measurement process will cause the product being manufactured to deviate from the production track, and personnel will contact the PCB board, causing product contamination and secondary defects;

[0005] 2. Usually there are sampling points for curing thickness testing on the product. When manually measuring the curing thickness, it is impossible to accurately align the measuring instrument with the sampling points;

[0006] 3. The two-hour interval cannot be controlled, and quality personnel often fail to measure within the specified time due to other work arrangements;

[0007] 4. The authenticity and accuracy of manual data entry cannot be guaranteed;

[0008] Therefore, a film thickness detection device of a coating detection equipment is proposed. Utility Model Content

[0009] In view of this, the present invention hopes to provide a film thickness detection device for coating detection equipment to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0010] The technical solution of the embodiment of the utility model is implemented as follows: a film thickness detection device of a coating detection device comprises a detection assembly, wherein the detection assembly comprises a frame, an L-shaped support arm, a support plate, a mounting groove, an electric cylinder, a push rod, a connecting plate, a connecting hole, a connecting rod, a film measuring instrument, a limit cylinder, a detection rod and a test port;

[0011] An L-shaped support arm is welded to the middle part of one side of the frame, and one end of the L-shaped support arm away from the frame is fixedly connected to a support plate, a mounting groove is provided at the front part of the upper surface of the support plate, an inner side wall of the mounting groove is fixedly connected to an electric cylinder, a push rod is fixedly connected to the output end of the electric cylinder, an outer side wall of the push rod is fixedly connected to a connecting plate, a connecting hole is provided at the front part of the upper surface of the connecting plate, a connecting rod is fixedly connected to the inner side wall of the connecting hole, a film measuring instrument is fixedly connected to the bottom of the connecting rod, a limiting cylinder is fixedly connected to the middle part of the front surface of the support plate, the outer side wall of the film measuring instrument is slidably connected to the inner side wall of the limiting cylinder, a detection rod is fixedly connected to the center of the lower surface of the film measuring instrument, and a test port is provided at the bottom of the detection rod.

[0012] Further preferably, a camera module is fixedly connected to the outer side of the center of the upper surface of the support plate, a camera lens is arranged at the center of the lower surface of the camera module, and the bottom of the camera lens passes through the center of the upper surface of the support plate.

[0013] Further preferably, a light module is fixedly connected to the lower surface of the support plate near the outer side of the camera lens.

[0014] Further preferably, an operating table is fixedly connected to the middle of the other side of the frame, a controller is fixedly connected to the upper surface of the operating table, the output ends of the camera module and the film measuring instrument are electrically connected to the input end of the controller, and the input ends of the electric cylinder and the light module are electrically connected to the output end of the controller.

[0015] Further preferably, the inner side wall of the limiting cylinder is provided with a plurality of limiting sliding grooves, the outer side wall of the film measuring instrument is fixedly connected with a plurality of limiting sliding bars, and the outer side wall of the limiting sliding bar is slidably connected to the inner side wall of the limiting sliding groove.

[0016] Further preferably, a driving shaft passes through the rear part of one side of the frame, a driving roller is fixedly connected to the middle of the outer side wall of the driving shaft, a driven shaft passes through the front part of one side of the frame, a driven roller is fixedly connected to the middle of the outer side wall of the driven shaft, the outer side wall of the driving roller is rotatably connected to the outer side wall of the driven roller through a transmission belt, a conveying motor is fixedly connected to the outer side of the driving shaft near the rear part of one side of the frame, the output end of the conveying motor is fixedly connected to one end of the driving shaft, the input end of the conveying motor is electrically connected to the output end of the controller, and a plurality of auxiliary rollers are arranged in the middle of both sides of the inner side wall of the frame, and the outer side walls of the auxiliary rollers are rotatably connected to the inner side walls of the transmission belt.

[0017] Further preferably, a plurality of PCB boards are bonded and connected to the upper surface of the conveyor belt, and a film thickness sampling point is arranged on one side of the upper surface of the PCB board.

[0018] Further preferably, support frames are welded at the four corners of the lower surface of the frame.

[0019] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0020] The utility model uses online automatic detection, and there is no need to remove the PCB board from the production line, thus avoiding the movement and human contact of the product during the production process, thereby reducing the risk of product contamination and secondary defects. At the same time, by integrating a high-precision positioning system and a film measuring instrument, the measuring instrument can be accurately aligned with the curing thickness test sampling point on the PCB board to ensure the accuracy of each measurement, and overcome the problem that it is difficult to accurately align the sampling point during manual measurement. The detection results are automatically recorded by the device and can be transmitted to the management system through data, reducing the manual input link, thereby improving the authenticity and accuracy of the data and avoiding the possibility of human error or tampering. The controller can set a timed task to automatically detect the film thickness on the PCB board every two hours to ensure that the quality control in the production process is strictly carried out at the specified time interval, avoiding the situation where measurement delays due to personnel work arrangements are caused.

[0021] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is the overall structure diagram of the utility model;

[0024] Figure 2 This is a structural diagram of the support plate and camera module of the utility model;

[0025] Figure 3 For the utility model Figure 2 Another perspective structure diagram;

[0026] Figure 4 This is a structural diagram of the active roller and the driven roller of the utility model.

[0027] 1. Detection assembly; 11. Frame; 12. L-shaped support arm; 13. Support plate; 14. Mounting groove; 15. Electric cylinder; 16. Push rod; 17. Connecting plate; 18. Connecting hole; 19. Connecting rod; 20. Film measuring instrument; 21. Limiting cylinder; 22. Detection rod; 23. Test port; 24. Camera module; 25. Camera lens; 26. Light module; 27. Operating table; 28. Controller; 29. ​​Limiting slide groove; 30. Limiting slide bar; 31. Active shaft; 32. Active roller; 33. Driven shaft; 34. Driven roller; 35. Conveyor belt; 36. Conveying motor; 37. Auxiliary roller; 38. PCB board; 39. Film thickness sampling point; 40. Support frame. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-Figure 4 As shown, the embodiment of the utility model provides a film thickness detection device for coating detection equipment, including a detection component 1, the detection component 1 includes a frame 11, an L-shaped support arm 12, a support plate 13, a mounting groove 14, an electric cylinder 15, a push rod 16, a connecting plate 17, a connecting hole 18, a connecting rod 19, a film measuring instrument 20, a limit cylinder 21, a detection rod 22 and a test port 23;

[0031] An L-shaped support arm 12 is welded to the middle part of one side of the frame 11, and one end of the L-shaped support arm 12 away from the frame 11 is fixedly connected to a support plate 13, a mounting groove 14 is provided on the front part of the upper surface of the support plate 13, an inner side wall of the mounting groove 14 is fixedly connected to an electric cylinder 15, an output end of the electric cylinder 15 is fixedly connected to a push rod 16, an outer side wall of the push rod 16 is fixedly connected to a connecting plate 17, a connecting hole 18 is provided on the front part of the upper surface of the connecting plate 17, a connecting rod 19 is fixedly connected to the inner side wall of the connecting hole 18, a film measuring instrument 20 is fixedly connected to the bottom of the connecting rod 19, a limiting cylinder 21 is fixedly connected to the middle part of the front surface of the support plate 13, the outer side wall of the film measuring instrument 20 is slidably connected to the inner side wall of the limiting cylinder 21, a detection rod 22 is fixedly connected at the center of the lower surface of the film measuring instrument 20, a test port 23 is provided at the bottom of the detection rod 22, and the film measuring instrument 20 is limited by sliding the film measuring instrument 20 inside the limiting cylinder 21.

[0032] In one embodiment, specifically: a camera module 24 is fixedly connected to the outer side of the center of the upper surface of the support plate 13, a camera lens 25 is arranged at the center of the lower surface of the camera module 24, and the bottom of the camera lens 25 passes through the center of the upper surface of the support plate 13. The image of the PCB board 38 is captured by the camera lens 25 and transmitted to the camera module 24, so that the camera module 24 recognizes the film thickness sampling point 39 on the PCB board 38 through image processing technology.

[0033] In one embodiment, specifically: a light module 26 is fixedly connected to the lower surface of the support plate 13 near the outer side of the camera lens 25 , and the light module 26 is used to fill in the light for the PCB board 38 to be inspected, thereby improving the clarity of the camera module 24 shooting.

[0034] In one embodiment, specifically: an operating table 27 is fixedly connected to the middle of the other side of the frame 11, a controller 28 is fixedly connected to the upper surface of the operating table 27, the output ends of the camera module 24 and the film measuring instrument 20 are electrically connected to the input ends of the controller 28, and the input ends of the electric cylinder 15 and the light module 26 are electrically connected to the output ends of the controller 28, so that the operation of the entire device can be easily controlled through the controller 28.

[0035] In one embodiment, specifically: a plurality of limiting slide grooves 29 are opened on the inner wall of the limiting cylinder 21, a plurality of limiting slide bars 30 are fixedly connected to the outer wall of the film measuring instrument 20, and the outer wall of the limiting slide bar 30 is slidably connected to the inner wall of the limiting slide groove 29. The limiting slide bar 30 on the film measuring instrument 20 slides inside the limiting slide groove 29, thereby limiting the limiting slide bar 30, thereby increasing the stability of the film measuring instrument 20 moving up and down.

[0036] In one embodiment, specifically: a driving shaft 31 passes through the rear part of one side of the frame 11, and a driving roller 32 is fixedly connected to the middle of the outer side wall of the driving shaft 31; a driven shaft 33 passes through the front part of one side of the frame 11, and a driven roller 34 is fixedly connected to the middle of the outer side wall of the driven shaft 33, and the outer side wall of the driving roller 32 is rotatably connected to the outer side wall of the driven roller 34 through a transmission belt 35; a conveying motor 36 is fixedly connected to the outer side of the driving shaft 31 near the rear part of one side of the frame 11, and the output end of the conveying motor 36 is fixedly connected to one end of the driving shaft 31, and the input end of the conveying motor 36 is electrically connected to the output end of the controller 28; a plurality of auxiliary rollers 37 are arranged in the middle of both sides of the inner side wall of the frame 11, and the outer side wall of the auxiliary roller 37 is rotatably connected to the inner side wall of the transmission belt 35. During the transmission process, the auxiliary rollers 37 play a role in supporting and guiding the transmission belt 35 to run smoothly.

[0037] In one embodiment, specifically: a plurality of PCB boards 38 are bonded and connected to the upper surface of the conveyor belt 35, and a film thickness sampling point 39 is provided on one side of the upper surface of the PCB board 38. In order to ensure that the position of each PCB board 38 on the conveyor belt 35 is evenly distributed, limit blocks are provided on the four corners of the conveyor belt 35 near the PCB board 38, so as to accurately position the PCB board 38 on the conveyor belt 35.

[0038] In one embodiment, specifically: support frames 40 are welded to the four corners of the lower surface of the frame 11, and the support frames 40 support the entire device, thereby increasing the stability of the entire device.

[0039] When the utility model is working: after the equipment is started, the controller 28 controls the conveying motor 36 to start through a preset program, drives the active shaft 31 and the active roller 32 to rotate, and then drives the driven roller 34 to rotate through the conveyor belt 35, so as to realize the operation of the entire conveying system. With the movement of the conveyor belt 35, the PCB board 38 is gradually transmitted to the working area of ​​the detection equipment. When the PCB board 38 is transmitted to the bottom of the camera module 24, the camera lens 25 captures the image of the PCB board 38, and identifies the film thickness sampling point 39 on the PCB board 38 through image processing technology. The controller 28 calculates the precise position of the film thickness sampling point 39 on the PCB board 38 according to the image data provided by the camera module 24, and controls the conveying motor 36 through the controller 28 to drive the conveyor belt 35 to move, and fine-tunes the position of the PCB board 38 so that the film thickness sampling point 39 moves to the bottom of the test port 23. Then, the controller 28 sends a command to the electric cylinder 15, and the output end of the electric cylinder 15 drives the ejector rod 16 and the connecting plate 17 to move downward. Since the connecting plate 17 is fixed with a connecting rod 19, the connecting rod 19 The film measuring instrument 20 connected at the bottom also descends accordingly. At the same time, the film measuring instrument 20 maintains stable sliding under the guidance of the limit tube 21 to ensure the accuracy of the measurement process. When the test port 23 at the bottom of the detection rod 22 of the film measuring instrument 20 reaches the film thickness sampling point 39 on the PCB board 38, the film measuring instrument 20 starts to measure the film thickness. After the film measuring instrument 20 completes the measurement, the measured film thickness value is transmitted to the controller 28 in real time through the transmission line. The controller 28 processes the received film thickness data and can selectively transmit the data to the Mes system or other related systems for recording and analysis. After completing the film thickness measurement, the electric cylinder 15 drives the film measuring instrument 20 to rise and reset to prepare for the measurement of the next PCB board 38. At the same time, the conveyor belt 35 continues to run, and transmits the PCB board 38 that has been measured to the next process, and at the same time transmits the new PCB board 38 to the detection area for the next round of measurement. The device can set a timed task through the controller 28, such as automatically measuring the film thickness sampling point 39 on the PCB board 38 every two hours to ensure quality control in the production process.

[0040] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A film thickness detection device for coating detection equipment, characterized in that: The invention comprises a detection assembly (1), wherein the detection assembly (1) comprises a frame (11), an L-shaped support arm (12), a support plate (13), a mounting groove (14), an electric cylinder (15), a push rod (16), a connecting plate (17), a connecting hole (18), a connecting rod (19), a film measuring instrument (20), a limiting cylinder (21), a detection rod (22) and a test port (23); An L-shaped support arm (12) is welded to the middle of one side of the frame (11); an end of the L-shaped support arm (12) away from the frame (11) is fixedly connected to a support plate (13); a mounting groove (14) is provided at the front of the upper surface of the support plate (13); an electric cylinder (15) is fixedly connected to the inner side wall of the mounting groove (14); a push rod (16) is fixedly connected to the output end of the electric cylinder (15); a connecting plate (17) is fixedly connected to the outer side wall of the push rod (16); and an upper portion of the connecting plate (17) is provided with a mounting groove (14). A connecting hole (18) is provided at the front of the surface, a connecting rod (19) is fixedly connected to the inner wall of the connecting hole (18), a film measuring instrument (20) is fixedly connected to the bottom of the connecting rod (19), a limiting cylinder (21) is fixedly connected to the middle of the front surface of the support plate (13), the outer wall of the film measuring instrument (20) is slidably connected to the inner wall of the limiting cylinder (21), a detection rod (22) is fixedly connected to the center of the lower surface of the film measuring instrument (20), and a test port (23) is provided at the bottom of the detection rod (22).

2. The film thickness detection device of the coating detection equipment according to claim 1, characterized in that: A camera module (24) is fixedly connected to the outer side of the center of the upper surface of the support plate (13), a camera lens (25) is arranged at the center of the lower surface of the camera module (24), and the bottom of the camera lens (25) passes through the center of the upper surface of the support plate (13).

3. The film thickness detection device of the coating detection equipment according to claim 2, characterized in that: A light module (26) is fixedly connected to the lower surface of the support plate (13) near the outer side of the camera lens (25).

4. The film thickness detection device of the coating detection equipment according to claim 3 is characterized in that: An operating table (27) is fixedly connected to the middle of the other side of the frame (11), and a controller (28) is fixedly connected to the upper surface of the operating table (27). The output ends of the camera module (24) and the film measuring instrument (20) are electrically connected to the input end of the controller (28), and the input ends of the electric cylinder (15) and the lighting module (26) are electrically connected to the output end of the controller (28).

5. The film thickness detection device of the coating detection equipment according to claim 1, characterized in that: The inner wall of the limiting cylinder (21) is provided with a plurality of limiting sliding grooves (29), the outer wall of the film measuring instrument (20) is fixedly connected with a plurality of limiting sliding strips (30), and the outer wall of the limiting sliding strip (30) is slidably connected to the inner wall of the limiting sliding groove (29).

6. The film thickness detection device of the coating detection equipment according to claim 4, characterized in that: A driving shaft (31) is passed through the rear part of one side of the frame (11), and a driving roller (32) is fixedly connected to the middle part of the outer wall of the driving shaft (31). A driven shaft (33) is passed through the front part of one side of the frame (11), and a driven roller (34) is fixedly connected to the middle part of the outer wall of the driven shaft (33). The outer wall of the driving roller (32) is rotatably connected to the outer wall of the driven roller (34) through a transmission belt (35). A conveying motor (36) is fixedly connected to the outer side of the driving shaft (31) at the rear part of one side of the frame (11), the output end of the conveying motor (36) is fixedly connected to one end of the driving shaft (31), and the input end of the conveying motor (36) is electrically connected to the output end of the controller (28). A plurality of auxiliary rollers (37) are arranged in the middle part of both sides of the inner wall of the frame (11), and the outer wall of the auxiliary roller (37) is rotatably connected to the inner wall of the transmission belt (35).

7. The film thickness detection device of the coating detection equipment according to claim 6, characterized in that: A plurality of PCB boards (38) are bonded and connected to the upper surface of the conveyor belt (35), and a film thickness sampling point (39) is provided on one side of the upper surface of the PCB board (38).

8. The film thickness detection device of the coating detection equipment according to claim 6, characterized in that: Support frames (40) are welded at four corners of the lower surface of the frame (11).

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