Automobile paint film quality detection device

Abstract

The utility model relates to the technical field of paint film detection devices, and discloses an automobile paint film quality detection device which comprises a mounting seat plate, and a deformable elastic block is detachably mounted below the mounting seat plate; the supporting structure is arranged below the elastic block, is used for fitting the bending of the workpiece and detecting a paint film, and comprises guide pipes, contraction grooves and a detection head, the elastic block is fixedly provided with a plurality of guide pipes, the guide pipes are provided with a plurality of contraction grooves, and the guide pipes form a corrugated structure capable of radially contracting through the contraction grooves; the circumferential surface of the guide pipe forms a corrugated structure through a plurality of shrinkage grooves, the movement range of the detection head can be greatly expanded to adapt to the concavo-convex of the automobile part by matching with the elastic block capable of elastically deforming, and the guide pipe can form multi-point support for the bottom of the elastic block on the basis of ensuring the deformation capability of the bottom of the elastic block; and the paint surface thickness detection precision of uneven positions is not lost.

Description

Technical Field

[0001] This utility model relates to the technical field of paint film testing devices, and in particular to a device for testing the quality of automotive paint film. Background Technology

[0002] In the field of automotive testing, paint film thickness testing is one of the procedures.

[0003] A search revealed prior art discloses a paint film thickness measuring device (publication number: CN113776481B), including:

[0004] The measurement module includes several probes, each probe having a measuring end that can face the paint surface to be measured when in measurement mode;

[0005] The substrate is capable of deformation, and each of the probes is spaced apart on the substrate. The substrate can move the probes through its own deformation so that the end faces of two of the measuring ends can deviate from the same plane.

[0006] The support member is used to drive the substrate to deform so that the end face of each of the measuring ends can match the shape of the paint surface to be measured.

[0007] Existing technology uses a deformable substrate to bond automotive parts to ensure that the detection head adheres to the parts. However, the solid structure of the substrate requires a large force to fully deform and bond with the parts. During the inspection of the paint surface, the detection position may be damaged due to excessive pressure. In the case of a completely hollow structure, when bonding with parts, the lack of support in the center position results in a deviation in the contact force between the detection head and the parts compared to the detection head closer to the side wall, affecting the detection accuracy and uniformity.

[0008] Therefore, we propose a device for testing the quality of automotive paint film. Utility Model Content

[0009] The present invention mainly solves the technical problem of uneven bonding force between the substrate and the components, and provides a device for testing the quality of automotive paint film.

[0010] To achieve the above objectives, this utility model adopts the following technical solution: a device for detecting the quality of automotive paint film, comprising:

[0011] Mounting base plate, with a deformable elastic block detachably installed below the mounting base plate;

[0012] A support structure is provided below the elastic block to accommodate the bending of the workpiece and detect the paint film. The support structure includes a guide tube, a shrinkage groove, and a detection head. Several guide tubes are fixedly installed on the elastic block. Several shrinkage grooves are formed in the guide tubes, which form a radially shrinkable corrugated structure. The detection head is elastically installed at the lower end of the shrinkage groove.

[0013] In a preferred embodiment of this utility model, the conduit is formed into a circular tube structure, and the conduit and the elastic block are integrally formed.

[0014] In a preferred embodiment of this utility model, the shrinkage groove is formed on the outer circumferential surface of the conduit, and the shrinkage groove is annular. Several identical shrinkage grooves are equidistantly arranged on the circumferential surface of the conduit.

[0015] In a preferred embodiment of this utility model, the support structure further includes a telescopic rod, which is detachably connected to the guide tube, and the detection head is fixedly installed on the output shaft of the telescopic rod.

[0016] In a preferred embodiment of this utility model, the support structure further includes a slot, the lower end of the conduit has a slot, the telescopic rod is interference-fitted with the slot, and the telescopic rod is inserted into the slot.

[0017] In a preferred embodiment of this utility model, the mounting base plate is formed into a rectangular block, and a rectangular groove is provided at the bottom of the mounting base plate. The elastic block is embedded in the rectangular groove, and an ear plate for installation is fixedly provided on one side of the mounting base plate. The ear plate has an installation hole.

[0018] In a preferred embodiment of this utility model, the elastic block forms a block structure, the elastic block is interference-fitted with the rectangular groove, the elastic block has a contraction cavity inside, and an air nozzle is fixedly installed on the outside of the elastic block to connect to the contraction cavity and inflate the contraction cavity.

[0019] This invention provides a device for testing the quality of automotive paint film. It has the following advantages:

[0020] 1. This automotive paint film quality inspection device incorporates a conduit integrally formed with an elastic block. Each conduit has several shrinkage grooves on its outer circumferential surface, creating a corrugated structure. Combined with an elastically deformable block, when the block is in contact with an automotive component, such as a hood, the deformable block, along with the radially deformable conduit, significantly increases the movement range of the inspection head to accommodate the unevenness of the automotive parts, thereby expanding the inspection range and substantially optimizing inspection efficiency. Furthermore, the deformable elastic block, combined with the shrinkable conduit, ensures the elastic block's bottom deformation capability while providing multi-point support to the bottom of the block. This prevents insufficient support when the elastic block contacts uneven surfaces, allowing the inspection head to fully contact the paint surface of the component without compromising the paint thickness measurement accuracy at uneven locations. The contact force between the inspection head and the component at multiple locations tends to be consistent.

[0021] 2. This automotive paint film quality inspection device, by embedding a telescopic rod into a slot, allows for easy disassembly and replacement of the telescopic rod due to the deformable rubber material of the guide tube, making subsequent maintenance more convenient. Furthermore, the extension and retraction of the output shaft of the telescopic rod can further enhance the movement range of the inspection head to adapt to the unevenness of automotive parts, thus further improving its adaptability.

[0022] 3. This automotive paint film quality inspection device uses an air nozzle to inflate the shrinkage chamber, allowing the bottom of an elastic block to elastically expand and contract within a certain range to adapt to the concave and convex positions of the parts. The elastic block is interference-fitted with the rectangular groove at the bottom of the mounting plate. After the elastic block is squeezed into the rectangular groove, it is inflated through the air nozzle, which ensures that the elastic block maintains a stable connection. This makes it easier to disassemble and assemble the elastic block, and facilitates the replacement of the elastic block if it is damaged. The elastically deformable elastic block after inflation, combined with the elastically connected inspection head, allows the inspection head to form elastic contact with the mounting plate during inspection, reducing the damage to the inspection head and the vehicle paint surface caused by hard contact. Attached Figure Description

[0023] Figure 1 This is one of the overall perspective views of this utility model;

[0024] Figure 2 This is the second overall perspective view of the present utility model;

[0025] Figure 3 This is a horizontal sectional view of the elastic block of this utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the detection head and telescopic rod in the conduit of this utility model;

[0027] Figure 5 This is a partial cross-sectional view of the catheter of this utility model.

[0028] Legend: 10. Mounting base plate; 11. Ear plate; 12. Elastic block; 13. Air nozzle; 14. Contraction chamber; 20. Guide tube; 21. Contraction groove; 22. Telescopic rod; 23. Detection head; 24. Slot. Detailed Implementation

[0029] A device for testing the quality of automotive paint film, such as Figure 2 , Figure 3 and Figure 4 As shown, it includes:

[0030] Mounting base plate 10, with a deformable elastic block 12 detachably installed below the mounting base plate 10;

[0031] A support structure is set below the elastic block 12 to conform to the bending of the workpiece and detect the paint film. The support structure includes a guide tube 20, a shrinkage groove 21 and a detection head 23. Several guide tubes 20 are fixedly installed on the elastic block 12. Several shrinkage grooves 21 are opened on the guide tubes 20. The guide tubes 20 form a radially shrinkable corrugated structure through the shrinkage grooves 21. The detection head 23 is elastically installed at the lower end of the shrinkage grooves 21. The guide tubes 20 form a circular tube structure. The guide tubes 20 and the elastic block 12 are integrally formed. The shrinkage grooves 21 are opened on the outer circumferential surface of the guide tubes 20. The shrinkage grooves 21 are annular. Several identical shrinkage grooves 21 are equidistantly arranged on the circumferential surface of the guide tubes 20.

[0032] In this solution, a conduit 20 integrally formed with the elastic block 12 is provided, and several shrinkage grooves 21 are opened on the outer circumferential surface of each conduit 20. The circumferential surface of the conduit 20 forms a corrugated structure through multiple shrinkage grooves 21. In conjunction with the elastically deformable elastic block 12, when the elastic block 12 is attached to the automotive part, such as the hood, the deformable elastic block 12, together with the radially deformable conduit 20, can greatly improve the movement range of the detection head 23 to adapt to the concavity and convexity of the automotive parts, thereby improving the detection range and substantially optimizing the detection efficiency without sacrificing the accuracy of paint thickness detection at uneven locations. Secondly, the deformable elastic block 12, together with the shrinkable conduit 20, can provide multi-point support for the bottom of the elastic block 12 while ensuring the deformation capability of the bottom of the elastic block 12. This avoids the lack of support when the bottom of the elastic block 12 contacts the concavity and convexity of the parts, so that the detection head 23 can fully contact the paint surface of the parts.

[0033] like Figure 5As shown, the support structure also includes a telescopic rod 22, which is detachably connected to the conduit 20. The detection head 23 is fixedly installed with the output shaft of the telescopic rod 22. The support structure also includes a slot 24, with a slot 24 opened at the lower end of the conduit 20. The telescopic rod 22 is interference-fitted with the slot 24, and the telescopic rod 22 is inserted into the slot 24. As a supplement to the above solution, in order to achieve an elastic connection between the detection head 23 and the conduit 20, the telescopic rod 22 is an elastic telescopic rod. By embedding the telescopic rod 22 into the slot 24, the telescopic rod 22 can be easily disassembled and installed due to the deformable rubber material of the conduit 20 for easy individual replacement, making subsequent maintenance more convenient. The extension and retraction of the output shaft of the telescopic rod 22 can further improve the movement range of the detection head 23 to adapt to the concavity and convexity of automotive parts, thus further improving its adaptability. The top of the conduit 20 is provided with holes for wiring.

[0034] like Figure 1 and Figure 2 As shown, the mounting plate 10 is formed into a rectangular block, and a rectangular groove is opened at the bottom of the mounting plate 10. The elastic block 12 is embedded in the rectangular groove. An ear plate 11 for installation is also fixed on one side of the mounting plate 10. The ear plate 11 has a mounting hole. The elastic block 12 is formed into a block structure and is interference-fitted with the rectangular groove. A contraction cavity 14 is provided inside the elastic block 12. An air nozzle 13 is fixedly installed on the outside of the elastic block 12, which connects to the contraction cavity 14 and inflates the contraction cavity 14. By inflating the contraction cavity 14 through the air nozzle 13, the bottom of the elastic block 12 can spring within a certain range. The elastic block 12 adapts to the concave and convex positions of the parts, and the rectangular groove at the bottom of the mounting plate 10 is interference-fitted with the elastic block 12. After the elastic block 12 is squeezed into the rectangular groove, it is inflated through the air nozzle 13, so that the elastic block 12 can maintain a stable connection. It is more convenient to disassemble and install the elastic block 12, and it is convenient to disassemble and replace the elastic block 12 after it is damaged. The elastic block 12, which can be elastically deformed after inflation, works with the elastically connected detection head 23. During the test, the detection head 23 can form elastic contact with the mounting plate 10, reducing the damage to the detection head 23 and the vehicle paint caused by hard contact.

[0035] The working principle of this utility model is as follows: air is injected into the shrinkage cavity 14 through the air nozzle 13, so that the bottom of the elastic block 12 can elastically stretch and deform within a certain range to adapt to the concave and convex positions of the parts. The elastic block 12 is interference-fitted with the rectangular groove at the bottom of the mounting plate 10. After the elastic block 12 is squeezed into the rectangular groove, air is injected through the air nozzle 13, so that the elastic block 12 can maintain a stable connection. The telescopic rod 22 is embedded in the slot 24. When the elastic block 12 is in contact with the car parts, such as the hood, the deformable elastic block 12, together with the radially deformable guide tube 20, can greatly improve the movement range of the detection head 23 to adapt to the concave and convex positions of the car parts, thereby improving the detection range. The detection head 23 can fully contact the paint surface of the parts to measure the thickness and uniformity of the paint surface.

[0036] The above structure is designed to work in conjunction with an automated automotive quality inspection system, including a paint film thickness measuring device as described above. The automated automotive quality inspection system further includes:

[0037] A drive mechanism is used to move the paint film thickness measuring device to achieve relative movement between the paint film thickness measuring device and the vehicle under test.

[0038] A control terminal is used to control the operation of the visual positioning device, the drive mechanism, and the paint film thickness measuring device.

[0039] By adopting the above technical solution, the control terminal enables the coordinated operation of the visual positioning device, the drive mechanism, and the paint film thickness measurement device. The drive mechanism can move the visual positioning device around the vehicle under test, scanning the surface of the vehicle to record point cloud data and obtain the paint surface data of each area. Simultaneously, the drive mechanism can also move the paint film thickness measurement device around the vehicle under test, measuring the paint film thickness at multiple locations based on the point cloud data. The mounting plate 10 is fixedly mounted on the drive mechanism. The detection head can measure the paint film thickness using magnetic force measurement, induced current measurement, or ultrasonic measurement, among other methods. In this solution, magnetic force measurement is used as an example. In actual measurement, regardless of the method used, the perpendicularity between the probe 3 and the paint surface under test will affect the accuracy of the thickness measurement. The accuracy of the thickness measurement is best when the axis of the probe 3 is perpendicular to the paint surface.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the quality of automotive paint film, characterized in that, include: Mounting base plate (10), with a deformable elastic block (12) detachably installed below the mounting base plate (10). A support structure is set below the elastic block (12) to conform to the bending of the workpiece and detect the paint film. The support structure includes a conduit (20), a shrinkage groove (21) and a detection head (23). The elastic block (12) is fixedly installed with several conduits (20). Several shrinkage grooves (21) are opened in the conduits (20). The conduits (20) form a radially shrinkable corrugated structure through the shrinkage grooves (21). The detection head (23) is elastically installed at the lower end of the shrinkage groove (21).

2. The automotive paint film quality testing device according to claim 1, characterized in that: The conduit (20) forms a circular tube structure, and the conduit (20) and the elastic block (12) are integrally formed.

3. The automotive paint film quality testing device according to claim 1, characterized in that: The shrinkage groove (21) is formed on the outer circumferential surface of the conduit (20). The shrinkage groove (21) is annular, and several identical shrinkage grooves (21) are equidistantly arranged on the circumferential surface of the conduit (20).

4. The automotive paint film quality testing device according to claim 1, characterized in that: The support structure also includes a telescopic rod (22), which is detachably connected to the conduit (20), and the detection head (23) is fixedly installed on the output shaft of the telescopic rod (22).

5. The automotive paint film quality testing device according to claim 4, characterized in that: The support structure also includes a slot (24), the lower end of the conduit (20) is provided with a slot (24), the telescopic rod (22) is interference-fitted with the slot (24), and the telescopic rod (22) is inserted into the slot (24).

6. The automotive paint film quality testing device according to claim 1, characterized in that: The mounting base plate (10) forms a rectangular block. A rectangular groove is provided at the bottom of the mounting base plate (10). The elastic block (12) is embedded in the rectangular groove. An ear plate (11) for installation is also fixed on one side of the mounting base plate (10). The ear plate (11) has an installation hole.

7. The automotive paint film quality testing device according to claim 1, characterized in that: The elastic block (12) forms a block structure. The elastic block (12) is interference-fitted with the rectangular groove. The elastic block (12) has a contraction cavity (14) inside. An air nozzle (13) is fixedly installed on the outside of the elastic block (12) to connect to the contraction cavity (14) and to inflate the contraction cavity (14).

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