Automobile coating film thickness testing device

Abstract

The invention provides an automobile coating film thickness testing device, which belongs to the technical field of automobiles and comprises an automobile paint spraying test selected area shell, an ultrasonic automatic coupling detection system, a data processing system and an automatic paint spraying manipulator device. The ultrasonic automatic coupling detection system is arranged on the periphery of the automobile paint spraying test selected area shell, the ultrasonic automatic coupling detection system is connected with the data processing system, and the ultrasonic automatic coupling detection system accurately detects the paint spraying thickness of a set area of the automobile paint spraying test selected area shell. By setting the automatic automobile coating detection device and setting detection areas to be areas with different shapes, the areas which do not reach the standard in the initial spraying process can be found out, the areas which do not meet the requirement are automatically transmitted to the spraying manipulator, the spraying manipulator automatically changes the spraying parameters, and the coating at any position of the whole automobile meets the design requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to an automobile painting film thickness test device. Background Art

[0002] Current automobile bodies are mainly formed by sheet metal welding. In order to improve the rust prevention performance of the automobile body, the body needs to be subjected to a painting process. The body passes through a specific painting electrophoresis tank, so that an electrophoretic paint film adheres to the inner and outer surfaces of the body, and then primer surfacer, color paint, and clear coat are sprayed on the paint film. Now, painting is basically carried out by robots. However, the thickness of the paint film and the paint for each type of vehicle are different. Therefore, the parameter requirements for robot painting are also different. It is impossible to set corresponding spraying parameters according to different vehicle models and different pigments. Sometimes, the same paint is used, but due to the different shapes of the vehicles, the thickness and data sprayed at the corners are different.

[0003] Currently, there are contact thickness gauges, ultraviolet fluorescence thickness measurement, etc. in the market. However, the contact thickness gauge is easy to scratch the paint surface and cannot form continuous measurement. The ultraviolet fluorescence method is only applicable to paints containing fluorescent agents, and neither can meet the spraying tests before the production of new vehicles. Therefore, it is necessary to design a device that can comprehensively test the thickness of each layer of spray painting according to the shape structure of a specific vehicle, provide valuable data opinions for the later vehicle production, and improve the vehicle production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide an automobile painting film thickness test device to solve the technical problem that the existing automobile painting film thickness cannot be continuously detected according to the specific vehicle shape.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] An automobile painting film thickness test device includes a housing structure of the selected area for automobile painting tests with the same external shape designed for each newly produced vehicle model, an ultrasonic automatic coupling detection system, a data processing system, and an automatic painting robot device. The housing structure of the selected area for automobile painting tests is a housing structure with the same external shape designed for each newly produced vehicle model. The ultrasonic automatic coupling detection system is arranged on the periphery of the housing structure of the selected area for automobile painting tests. The ultrasonic automatic coupling detection system is connected to the data processing system. The ultrasonic automatic coupling detection system accurately detects the painting thickness of the set area of the housing structure of the selected area for automobile painting tests, and then transmits the detection data to the data processing system for processing the detection data, and identifies the corresponding areas that have not yet reached the thickness requirements. Then, the data of the areas that have not reached the corresponding areas is transmitted to the automatic painting robot device, and then the automatic painting robot device automatically changes the spraying parameters of the corresponding areas, so that the spraying of the entire vehicle frame can meet the design requirements.

[0007] Furthermore, the test device can conduct all coating tests on the newly designed vehicle frame. First, it detects the electrocoating layer. When the thickness of the electrocoating layer fails to reach the designed thickness, the data processing system outputs the areas where the thickness is not reached. Then, technicians adjust the electrocoating parameters according to these areas. When the test data does not match, it is necessary to use chemical agents to remove the coating and then spray again according to the adjusted parameters. After the coating of the previous layer meets the design requirements, the spraying parameters are retained, and then the experiment for the next coating is carried out until all sprayed coatings meet the design requirements, obtaining the spraying parameters for all coatings. These spraying parameters are used as the spraying parameters for the production of new vehicles.

[0008] Furthermore, the ultrasonic automatic coupling detection system includes several ultrasonic automatic coupling detection devices and a control and data acquisition device. Several ultrasonic automatic coupling detection devices are arranged on the periphery of the shell of the selected area for automotive painting tests. After a coating is sprayed and completed on the shell of the selected area for automotive painting tests, several ultrasonic automatic coupling detection devices detect the coating thickness of all set areas of the shell of the selected area for automotive painting tests, and then identify whether the coatings in different areas of the shell of the selected area for automotive painting tests meet the design requirements, and then transmit the identification data to the control and data acquisition device.

[0009] Furthermore, the ultrasonic automatic coupling detection device is provided with an ultrasonic probe with a corresponding fitting shape according to the shape of the corresponding area of the shell of the selected area for automotive painting tests to fit on the detection area. If the detected vehicle body area is flat, the front end of the ultrasonic probe is set as the corresponding plane. If the detected vehicle body area is a convex structure, the front end of the ultrasonic probe is set as a concave structure, making the detection thickness accuracy more precise.

[0010] Furthermore, the ultrasonic automatic coupling detection device includes a telescopic movement device, a slide plate, a contact support, an ultrasonic probe, and a telescopic pressure device. The telescopic movement device is arranged at one end of the contact support, and the telescopic movement device drives the slide plate to move back and forth. The telescopic pressure device is arranged at one end of the slide plate, and the ultrasonic probe is arranged on the telescopic pressure device. When the slide plate moves outwards, the ultrasonic probe contacts the vehicle frame, and then the telescopic pressure device compresses and detects the digital value of the pressure, transmitting the pressure data to the control and data acquisition device. The control and data acquisition device controls the telescopic movement device to extend or shorten, so that the pressure between the ultrasonic probe and the vehicle frame reaches the optimal detection value, and then the control and data acquisition device controls the ultrasonic probe to collect the thickness data of the vehicle coating.

[0011] Further, the telescopic motion device is a cylinder or includes a motor and a lead screw. When the telescopic motion device is a cylinder, the telescopic end of the cylinder is connected to the slide plate to drive the slide plate to move back and forth. When the telescopic motion device includes a motor and a lead screw, the motor is fixed at one end of the contact support, one end of the lead screw is connected to the output end of the motor, and the sliding sleeve on the lead screw is connected to the bottom of the slide plate to drive the slide plate to move back and forth.

[0012] Further, the telescopic pressure device includes a chuck, a spring cylinder housing, a pressure sensor, and a spring. The pressure sensor is arranged at the bottom of the spring cylinder housing. The spring is arranged inside the spring cylinder housing, and one end of the spring is connected to the pressure sensor, and the other end of the spring is connected to the bottom of the chuck. The ultrasonic probe is clamped on the chuck.

[0013] Further, the data processing system is used for data processing and position calibration, generating a three-dimensional model of the vehicle frame. Each ultrasonic automatic coupling detection device is provided with a label and a corresponding detection area. The data of the ultrasonic automatic coupling detection device is collected and returned. According to whether the data meets the requirements, if not, the data processing system identifies the non-conforming area and transmits the non-conforming area part in the three-dimensional model of the vehicle frame to the automatic painting robot device. The automatic painting robot device adjusts the spraying parameter data of the corresponding non-conforming area until it meets the requirements.

[0014] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

[0015] By setting the automatic detection device for automobile coatings and setting the detection areas as areas with different shapes, the present invention can find the areas that do not meet the standards during the initial spraying process, automatically transmit the non-conforming areas to the spraying manipulator, and the spraying manipulator automatically changes the spraying parameters, so that the coatings at any position of the whole vehicle meet the design requirements. At the same time, the set ultrasonic automatic coupling detection device reaches the optimal detection force position, with higher detection thickness accuracy, higher efficiency, and faster speed. Description of the Drawings

[0016] Figure 1 is the principle block diagram of the test device of the present invention;

[0017] Figure 2 is the module block diagram of the ultrasonic automatic coupling detection system of the present invention;

[0018] Figure 3 is the structural schematic diagram of the ultrasonic automatic coupling detection device of the present invention;

[0019] Figure 4 is the structural schematic diagram of the lead screw of the ultrasonic automatic coupling detection device of the present invention;

[0020] Figure 5It is a diagram showing the cooperation between the concave ultrasonic probe of the present invention and the convex vehicle body;

[0021] Figure 6 It is a schematic diagram of the internal structure of the spring cylinder of the present invention.

[0022] In the drawings, 1 - motor, 2 - slide plate, 3 - spring cylinder, 4 - contact support, 5 - chuck, 6 - ultrasonic probe, 7 - perforation, 8 - lead screw, 9 - pressure sensor, 10 - spring, 11 - chuck base, 12 - convex vehicle body, 13 - concave ultrasonic probe. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following preferred embodiments are cited with reference to the drawings for further detailed description of the present invention. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0024] As Figure 1-6 shown, an automobile paint film thickness test device includes a housing of the selected area for automobile painting test, an ultrasonic automatic coupling detection system, a data processing system, and an automatic painting robot device. The housing of the selected area for automobile painting test is a housing structure with the same external shape designed for each newly produced vehicle model. The ultrasonic automatic coupling detection system is arranged on the periphery of the housing of the selected area for automobile painting test. The ultrasonic automatic coupling detection system is connected to the data processing system. The ultrasonic automatic coupling detection system accurately detects the paint thickness of the set area of the housing of the selected area for automobile painting test, and then transmits the detection data to the data processing system for processing the detection data, and identifies the corresponding areas that have not reached the thickness requirement. Then, the data of the areas that have not reached the corresponding areas is transmitted to the automatic painting robot device, and then the automatic painting robot device automatically changes the spraying parameters of the corresponding areas, so that the spraying of the entire vehicle frame can meet the design requirements. The automatic painting robot device includes an existing automatic spraying robot and also includes a display screen. Technicians can use the display screen to set the initial spraying parameters, and at the same time, the spraying parameters transmitted by the data processing system are also displayed on the display screen. The points detected by the ultrasonic automatic coupling detection system are set according to the shape of the vehicle. For example, if one side is flat, one or two detection points can be set. Setting two detection points can achieve more accurate detection. However, for some curved places or concave and convex positions, detection points are also set. The shape of the front end of the ultrasonic probe for detection is complementary to a detection housing and can be completely fitted, making the later detection of the thickness more accurate.

[0025] In the embodiments of the present invention, the test device realizes all coating tests on the newly designed vehicle frame. First, the electrophoretic layer is detected. When the thickness of the electrophoretic layer does not reach the designed thickness, the data processing system outputs the area where the thickness is not reached. Then, the technical personnel change the electrophoretic parameters according to the area where the thickness is not reached. When the test data does not match, it is necessary to use chemical agents to remove the coating and then spray again according to the adjusted parameters. After the coating of the previous layer meets the design requirements, the spraying parameters are retained, and then the experiment of the next coating is carried out until all the sprayed coatings meet the design requirements, and the spraying parameters of all coatings are obtained. The spraying parameters are used as the spraying parameters for the production of new vehicles.

[0026] In the embodiments of the present invention, the ultrasonic automatic coupling detection system includes a plurality of ultrasonic automatic coupling detection devices and a control and data acquisition device. The plurality of ultrasonic automatic coupling detection devices are arranged on the periphery of the shell of the selected area of the vehicle painting test. After the spraying of a coating on the shell of the selected area of the vehicle painting test is completed, the plurality of ultrasonic automatic coupling detection devices detect the thickness of the coatings in all set areas of the shell of the selected area of the vehicle painting test, and then identify whether the coatings in different areas of the shell of the selected area of the vehicle painting test meet the design requirements, and then transmit the identification data to the control and data acquisition device.

[0027] In the embodiments of the present invention, the ultrasonic automatic coupling detection device is provided with an ultrasonic probe 6 with a corresponding fitting shape according to the shape of the corresponding area of the shell of the selected area of the vehicle painting test to be fitted on the detection area. If the detected body area is flat, the front end of the ultrasonic probe 6 is set to the corresponding plane. If the detected body area is a convex structure, the front end of the ultrasonic probe 6 is set to a concave structure, and the detection thickness accuracy is more precise.

[0028] In the embodiments of the present invention, the ultrasonic automatic coupling detection device includes a telescopic motion device, a slide plate 2, a contact support 4, an ultrasonic probe 6 and a telescopic pressure device. The telescopic motion device is arranged at one end of the contact support 4. The telescopic motion device drives the slide plate 2 to move back and forth. The telescopic pressure device is arranged at one end of the slide plate 2. The ultrasonic probe 6 is arranged on the telescopic pressure device. When the slide plate 2 moves outwards, the ultrasonic probe 6 contacts the vehicle frame, and then the telescopic pressure device compresses and detects the digital value of the pressure, and transmits the pressure data to the control and data acquisition device. The control and data acquisition device controls the telescopic motion device to extend or shorten so that the pressure between the ultrasonic probe 6 and the vehicle frame reaches the optimal detection value, and then the control and data acquisition device controls the ultrasonic probe 6 to collect the thickness data of the vehicle coating.

[0029] In the embodiments of the present invention, the telescopic motion device is a cylinder or includes a motor 1 and a lead screw 8. When the telescopic motion device is a cylinder, the telescopic end of the cylinder is connected to the slide plate 2 to drive the slide plate 2 to move back and forth. When the telescopic motion device includes a motor 1 and a lead screw 8, the motor 1 is fixed at one end of the contact support 4, one end of the lead screw 8 is connected to the output end of the motor 1, and the sliding sleeve on the lead screw 8 is connected to the bottom of the slide plate 2 to drive the slide plate 2 to move back and forth.

[0030] In the embodiments of the present invention, the telescopic pressure device includes a chuck 5, a spring cylinder housing, a pressure sensor 9, and a spring 10. The pressure sensor 9 is arranged at the bottom of the spring cylinder housing. The spring 10 is arranged inside the spring cylinder housing, and one end of the spring 10 is connected to the pressure sensor 9, and the other end of the spring 10 is connected to the bottom of the chuck 5. The ultrasonic probe 6 is clamped on the chuck 5.

[0031] In the embodiments of the present invention, the data processing system is used for data processing and position calibration, generating a three-dimensional model of the vehicle frame. Each ultrasonic automatic coupling detection device is provided with a label and a corresponding detection area. The data of the ultrasonic automatic coupling detection device is collected and returned. According to whether the data meets the requirements, if not, the data processing system identifies the non-conforming area and transmits the non-conforming area part in the three-dimensional model of the vehicle frame to the automatic painting robot device. The automatic painting robot device adjusts the spraying parameter data of the corresponding non-conforming area until it meets the requirements. Before the previous detection, the data processing system has already saved the labels and coordinates of all detection points, as well as the data of the specific shape of the detection area. After the later detection, by directly comparing, it can be known which specific position needs to change the spraying parameters.

[0032] This device can find out the non-conforming areas in the initial spraying process, automatically transmit the non-conforming areas to the spraying manipulator, and the spraying manipulator automatically changes the spraying parameters, so that the coating at any position of the whole vehicle meets the design requirements. At the same time, the set ultrasonic automatic coupling detection device reaches the optimal detection force position, with higher detection thickness accuracy, higher efficiency, and faster speed.

[0033] Matters not described in the present invention are well-known technologies.

[0034] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An automotive painting film thickness test device, characterized in that: It includes the shell of the selected area for automotive painting test, an ultrasonic automatic coupling detection system, a data processing system, and an automatic painting robot device. The shell of the selected area for automotive painting test is a shell structure with the same external shape designed for each newly produced vehicle model. The ultrasonic automatic coupling detection system is arranged on the periphery of the shell of the selected area for automotive painting test. The ultrasonic automatic coupling detection system is connected to the data processing system. The ultrasonic automatic coupling detection system accurately detects the painting thickness of the set area of the shell of the selected area for automotive painting test, and then transmits the detection data to the data processing system to process the detection data, and identifies the corresponding areas that have not reached the thickness requirement. Then, it transmits the data of the areas that have not reached the corresponding areas to the automatic painting robot device. Then, the automatic painting robot device automatically changes the spraying parameters of the corresponding areas, so that the spraying of the entire vehicle frame can meet the design requirements.

2. The automotive paint film thickness test device according to claim 1, wherein: The test device realizes all coating tests on the newly designed vehicle frame. First, it detects the electrophoretic layer. When the thickness of the electrophoretic layer does not reach the design requirement, the data processing system outputs the areas that do not reach the thickness. Then, the technical personnel change the electrophoretic parameters according to the areas that do not reach the thickness. When the test data does not match, it is necessary to use chemical agents to remove the coating and then spray again according to the adjusted parameters. After the coating of the previous layer meets the design requirements, the spraying parameters are retained, and then the experiment of the next layer is carried out until all the sprayed coatings meet the design requirements, and the spraying parameters of all coatings are obtained. The spraying parameters are used as the spraying parameters for the production of new vehicles.

3. The automotive paint film thickness test device according to claim 1, characterized in that: The ultrasonic automatic coupling detection system includes several ultrasonic automatic coupling detection devices and a control and data acquisition device. Several ultrasonic automatic coupling detection devices are arranged on the periphery of the shell of the selected area for automotive painting test. After the spraying of a coating on the shell of the selected area for automotive painting test is completed, several ultrasonic automatic coupling detection devices detect the coating thickness of all set areas of the shell of the selected area for automotive painting test, and then identify whether the coatings in different areas of the shell of the selected area for automotive painting test meet the design requirements, and then transmit the identification data to the control and data acquisition device.

4. The automotive paint film thickness test device according to claim 3, characterized in that: The ultrasonic automatic coupling detection device sets an ultrasonic probe (6) with a corresponding fitting shape to fit on the detection area according to the shape of the corresponding area of the shell of the selected area for automotive painting test. If the detected body area is flat, the front end of the ultrasonic probe (6) is set to a corresponding plane. If the detected body area is a convex structure, the front end of the ultrasonic probe (6) is set to a concave structure, and the detection thickness accuracy is more precise.

5. The automotive paint film thickness test device according to claim 4, characterized in that: The ultrasonic automatic coupling detection device includes a telescopic motion device, a slide plate (2), a contact support (4), an ultrasonic probe (6), and a telescopic pressure device. The telescopic motion device is arranged at one end of the contact support (4), and the telescopic motion device drives the slide plate (2) to move back and forth. The telescopic pressure device is arranged at one end of the slide plate (2), and the ultrasonic probe (6) is arranged on the telescopic pressure device. When the slide plate (2) moves outwards, the ultrasonic probe (6) contacts the vehicle frame, and then the telescopic pressure device compresses and detects the digital value of the pressure, and transmits the pressure data to the control and data acquisition device. The control and data acquisition device controls the telescopic motion device to extend or shorten, so that the pressure between the ultrasonic probe (6) and the vehicle frame reaches the optimal detection value, and then the control and data acquisition device controls the ultrasonic probe (6) to collect the thickness data of the vehicle coating.

6. The automotive paint film thickness test device according to claim 4, characterized in that: The telescopic motion device is a cylinder or includes a motor (1) and a lead screw (8). When the telescopic motion device is a cylinder, the telescopic end of the cylinder is connected to the slide plate (2) to drive the slide plate (2) to move back and forth. When the telescopic motion device includes a motor (1) and a lead screw (8), the motor (1) is fixed at one end of the contact support (4), one end of the lead screw (8) is connected to the output end of the motor (1), and the sliding sleeve on the lead screw (8) is connected to the bottom of the slide plate (2) to drive the slide plate (2) to move back and forth.

7. The automotive paint film thickness test device according to claim 4, characterized in that: The telescopic pressure device includes a chuck (5), a spring cylinder housing, a pressure sensor (9), and a spring (10). The pressure sensor (9) is arranged at the bottom of the spring cylinder housing, the spring (10) is arranged inside the spring cylinder housing, one end of the spring (10) is connected to the pressure sensor (9), the other end of the spring (10) is connected to the bottom of the chuck (5), and the ultrasonic probe (6) is clamped on the chuck (5).

8. The automotive painting film thickness test device according to claim 4, characterized in that: The data processing system is used for data processing and position calibration, generating a three-dimensional model of the vehicle frame. Each ultrasonic automatic coupling detection device is provided with a label and a corresponding detection area. The data of the ultrasonic automatic coupling detection device is collected and returned. According to whether the data meets the requirements, if not, the data processing system identifies the non-conforming area and transmits the non-conforming area part in the three-dimensional model of the vehicle frame to the automatic painting robot device. The automatic painting robot device adjusts the spraying parameter data of the corresponding non-conforming area until it meets the requirements.

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