A detection device for PVD coating

Abstract

The present invention relates to the technical field of PVD coating detection, and particularly to a detection device for PVD coatings, including a friction testing machine housing and a precision electronic scale, as well as a friction mechanism provided on the friction testing machine housing. A T-shaped base is fixedly connected to the side wall of the friction testing machine housing, a raised platform is fixedly connected to the top of the T-shaped base, the precision electronic scale is fixedly connected to the top end of the raised platform, an outlet is provided on the side wall of the friction testing machine housing, an L-shaped plate is fixedly connected to the inner side of the outlet, a sliding plate is horizontally slidably connected to the inner side of the L-shaped plate, and a top plate is longitudinally slidably connected to the side wall of the sliding plate. Through the mutual cooperation of the above structures, the present invention can automatically place the test block weighed on the precision electronic scale onto the friction mechanism for testing, and can place the test block back onto the precision electronic scale for weighing after the test is completed, thus eliminating the need for the tester to repeatedly disassemble, and greatly improving the convenience performance of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of PVD coating detection, and particularly to a detection device for PVD coatings. Background Art

[0002] PVD is a surface treatment technology. By depositing one or more layers of thin films such as metals, alloys, and composite materials on the surface of a substrate, the wear resistance, corrosion resistance, aesthetics, etc. of the substrate can be improved. PVD coatings are pollution-free, non-toxic, and non-radioactive materials and have been widely used in industries, automobiles, medical treatment, construction, etc. In order to be able to detect the wear resistance of PVD coatings, a PVD coating is applied to a test block and then placed on a testing machine for wear resistance testing to ensure stability during subsequent use.

[0003] In the prior art, a PVD coating wear resistance detection device with the publication number of CN221781998U, through the provided detection column and detection head, and the plug-in installation method between the detection column and the detection head, enables the staff to quickly remove the detection head from the detection column when the detection head needs to be coated with a PVD coating, and quickly install it at one end of the detection column after the coating is completed, thus facilitating the subsequent detection of the wear resistance of the PVD coating.

[0004] Although it can facilitate the quick removal of the detection head from the detection column, there are still some defects in the actual detection process. Since the detection device lacks an automatic detection function, during the wear resistance detection of the test block coated with a PVD coating, the detection personnel need to first weigh the initial weight of the test block, then install the test block on the testing instrument, and finally, after the detection is completed, the detection personnel need to take out the test block and place it on the weighing device. This is not only time-consuming and laborious, but also requires the detection personnel to repeatedly clamp the test block, greatly reducing the detection efficiency of the device.

[0005] Therefore, a detection device for PVD coatings is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to propose a detection device for PVD coatings to solve the drawbacks existing in the background art.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: A detection device for PVD coating, comprising a friction testing machine housing and a precision electronic scale, as well as a friction mechanism provided on the friction testing machine housing. A T-shaped base is fixedly connected to the side wall of the friction testing machine housing. A raised platform is fixedly connected to the top of the T-shaped base. The precision electronic scale is fixedly connected to the top end of the raised platform. An outlet is provided on the side wall of the friction testing machine housing. An L-shaped plate is fixedly connected to the inner side of the outlet. A sliding plate is horizontally slidably connected to the inner side of the L-shaped plate. A top plate is longitudinally slidably connected to the side wall of the sliding plate. A lower U-shaped frame is fixedly connected to the bottom of the top plate. A clamping mechanism for clamping a test block is provided on the lower U-shaped frame;

[0008] A round rod is fixedly connected to the rear side of the top plate. A horizontal groove is provided on the side wall of the L-shaped plate, and the round rod is movably connected to the inner side of the horizontal groove. An inclined groove that slopes downward is provided on the side wall of the horizontal groove and above the friction mechanism. A notch is provided on the top side of the L-shaped plate. An extension plate is fixedly connected to the top end of the rear side of the L-shaped plate. A driving block is slidably connected to the position corresponding to the extension plate on the top of the L-shaped plate. A pulling rope is fixedly connected between the driving block and the side wall of the sliding plate. A reset mechanism for pulling the sliding plate back to its original position is provided on the L-shaped plate. An electric telescopic cylinder is fixedly connected to the top of the extension plate. A push plate for pushing the driving block to move is fixedly connected to the output end of the electric telescopic cylinder.

[0009] In the above technical solution, further, a pair of support frames are fixedly connected between the bottom of the extension plate and the top of the T-shaped base.

[0010] In the above technical solution, further, a fixed seat is fixedly connected to the notch. An upper guide roller is rotatably connected to the inner side of the fixed seat. A lower guide roller is rotatably connected to the position corresponding to the extension plate on the top of the L-shaped plate, and the pulling rope passes through the outer walls of the upper guide roller and the lower guide roller respectively.

[0011] In the above technical solution, further, the reset mechanism includes a volute spring. A pair of discs are fixedly connected to the side wall of the L-shaped plate. A winding roller is rotatably connected between the discs. A reset rope is wound around the winding roller. One end of the reset rope is fixedly connected to the outer wall of the winding roller. The other end of the reset rope is fixedly connected to the side wall of the sliding plate. The volute spring is arranged inside the winding roller, and one end of the volute spring is fixedly connected to the inside of the winding roller, and the other end of the volute spring is fixedly connected to the side wall of one of the discs.

[0012] In the above technical solution, further, the clamping mechanism includes clamping plates, and there are a pair of the clamping plates. Both ends of the inner side of the lower U-shaped frame are provided with recessed grooves. The clamping plates are both arranged in the grooves, and on the sides of the clamping plates away from each other, there are lower right-angle blocks with inclined surfaces fixedly connected thereto and penetrating through the outer wall of the lower U-shaped frame. Above the lower right-angle blocks and on the top of the top plate, there are extrusion rods penetrating and slidingly connected. The bottom of the extrusion rod is inclined. A connecting plate is fixedly connected between the tops of the extrusion rods. On the top of the connecting plate, there is an upper right-angle block with an inclined surface. Top grooves are provided on the tops of the L-shaped plate and the lengthened plate. At the position of the top groove at the bottom of the push plate, there is an upper block for extruding the inclined surface of the upper right-angle block fixedly connected thereto. Inside the L-shaped plate and above the inclined groove, there is an extrusion right-angle block with an inclined surface fixedly connected thereto.

[0013] In the above technical solution, further, upper springs are fixedly connected between the bottom of the top plate and the outer walls of the extrusion rods, and lower springs are fixedly connected between the bottoms of the lower right-angle blocks and the outer walls of the lower U-shaped frame.

[0014] In the above technical solution, further, rubber pads are fixedly connected to the sides of the clamping plates close to each other, and the rear side of the upper block is provided with a smooth arc surface.

[0015] In the above technical solution, further, a touch sensor is fixedly connected to the side wall of the L-shaped plate away from the raised platform. The touch sensor is electrically connected to the friction mechanism and the electric telescopic cylinder through a controller.

[0016] In the above technical solution, further, a cleaning brush for cleaning the debris at the bottom of the test block is fixedly connected inside the friction testing machine housing and below the outlet. A collection box for collecting debris is slidably connected to the bottom end inside the friction testing machine housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the mutual cooperation of structures such as the clamping mechanism, the reset mechanism, and the L-shaped plate, the present invention can automatically place the test block weighed on the precision electronic scale onto the friction mechanism for testing, and can place the test block back onto the precision electronic scale for weighing after the test is completed, thus eliminating the need for the tester to disassemble repeatedly, greatly improving the convenience performance of the device.

[0019] 2. Through the mutual cooperation of the cleaning brush, the collection box, and the reset mechanism, the present invention can automatically clean the debris at the bottom of the test block after the test is completed, thus ensuring the accuracy of subsequent weighing, further improving the accuracy of the test results of the device, and further improving the convenience performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front three-dimensional structural schematic diagram of the detection device of the present invention;

[0021] Figure 2 Schematic diagram of the overall external structure of the friction testing machine housing of the present invention;

[0022] Figure 3 Schematic diagram of the overall external structure of the raised platform of the present invention;

[0023] Figure 4 Schematic diagram of the overall external structure of the L-shaped plate and the extension plate of the present invention;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of the front part of the L-shaped plate of the present invention with a partial section;

[0025] Figure 6 Schematic diagram of the overall external structure of the sliding plate and the top plate of the present invention;

[0026] Figure 7 Schematic diagram of the overall external structure of the clamping mechanism of the present invention;

[0027] Figure 8 Schematic diagram of the overall external structure of the clamping block of the present invention;

[0028] Figure 9 Attachment of the present invention Figure 4 Schematic diagram of the partial enlarged structure at position A in the figure.

[0029] In the figure: 1. Friction testing machine housing; 2. Friction mechanism; 3. T-shaped base; 4. Raised platform; 5. Outlet; 6. Extrusion right-angle block; 7. L-shaped plate; 8. Sliding plate; 9. Top plate; 10. Lower U-shaped frame; 11. Round rod; 12. Horizontal groove; 13. Inclined groove; 14. Notch; 15. Extension plate; 16. Driving block; 17. Pulling rope; 18. Electric telescopic cylinder; 19. Pushing plate; 20. Support frame; 21. Fixed seat; 22. Upper guide roller; 23. Lower guide roller; 24. Volute spring; 25. Disc; 26. Winding roller; 27. Clamping plate; 28. Groove; 29. Lower right-angle block; 30. Extrusion rod; 31. Connecting plate; 32. Upper right-angle block; 33. Top groove; 34. Upper block; 35. Upper spring; 36. Lower spring; 37. Rubber pad; 38. Touch sensor; 39. Cleaning brush; 40. Collection box; 41. Reset rope; 42. Precision electronic scale. Detailed implementation manners

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0031] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0032] As Figures 1-9 shown, a detection device for a PVD coating includes a friction testing machine housing 1 and a precision electronic scale 42, as well as a friction mechanism 2 provided on the friction testing machine housing 1. The friction mechanism 2 mainly drives a friction roller to rotate through a motor to achieve wear resistance testing of the PVD coating on the surface of the test block, which is a mature technology in the prior art and will not be described in detail herein. A T-shaped base 3 is fixedly connected to the side wall of the friction testing machine housing 1, a raised platform 4 is fixedly connected to the top of the T-shaped base 3, and the precision electronic scale 42 is fixedly connected to the top end of the raised platform 4. The precision electronic scale 42 uses an electronic scale for experiments to ensure the accuracy during the entire detection process. An outlet 5 is provided on the side wall of the friction testing machine housing 1, an L-shaped plate 7 is fixedly connected to the inner side of the outlet 5, a sliding plate 8 is horizontally slidably connected to the inner side of the L-shaped plate 7, a top plate 9 is longitudinally slidably connected to the side wall of the sliding plate 8, a lower U-shaped frame 10 is fixedly connected to the bottom of the top plate 9, and a clamping mechanism for clamping the test block is provided on the lower U-shaped frame 10;

[0033] A round rod 11 is fixedly connected to the rear side of the top plate 9, a horizontal groove 12 is provided on the side wall of the L-shaped plate 7, and the round rod 11 is movably connected to the inner side of the horizontal groove 12. An inclined groove 13 that slopes downward is provided on the side wall of the horizontal groove 12 and above the friction mechanism 2. Through the setting of the inclined groove 13, it is convenient to squeeze the lower U-shaped frame 10 to move downward, so that the clamped test block contacts the friction roller on the friction mechanism 2. A notch 14 is provided on the top side of the L-shaped plate 7, an extended plate 15 is fixedly connected to the top end of the rear side of the L-shaped plate 7, a driving block 16 is slidably connected to the position corresponding to the extended plate 15 on the top of the L-shaped plate 7, a pull rope 17 is fixedly connected between the driving block 16 and the side wall of the sliding plate 8, and a reset mechanism for pulling the sliding plate 8 to reset is provided on the L-shaped plate 7. An electric telescopic cylinder 18 is fixedly connected to the top of the extended plate 15, a push plate 19 for pushing the driving block 16 to move is fixedly connected to the output end of the electric telescopic cylinder 18, and a pair of support frames 20 are fixedly connected between the bottom of the extended plate 15 and the top of the T-shaped base 3. The extended plate 15 can be supported by the support frames 20;

[0034] The reset mechanism includes a volute spring 24. A pair of discs 25 are fixedly connected to the side wall of the L-shaped plate 7. A winding roller 26 is rotatably connected between the discs 25. A reset rope 41 is wound around the winding roller 26. One end of the reset rope 41 is fixedly connected to the outer wall of the winding roller 26, and the other end of the reset rope 41 is fixedly connected to the side wall of the sliding plate 8. The volute spring 24 is provided inside the winding roller 26, and one end of the volute spring 24 is fixedly connected to the inside of the winding roller 26, and the other end of the volute spring 24 is fixedly connected to the side wall of one of the discs 25;

[0035] When conducting wear resistance detection on a test block with a PVD coating, first place the test block on a precision electronic scale 42 for weighing and record the initial data. After weighing, the weighed test block can be pushed into the lower U-shaped frame 10. Subsequently, control the electric telescopic cylinder 18 to start and pull the push plate 19 to move. First, it will drive the upper block 34 at the bottom of the push plate 19 to move, thereby squeezing the upper right-angle block 32 to drive the clamping mechanism to operate and clamp the test block in the lower U-shaped frame 10. Subsequently, the push plate 19 moves beside the driving block 16, and then the push plate 19 will push the driving block 16 to slide on the L-shaped plate 7 and the extension plate 15. At this time, the upper block 34 will slide inside the top groove 33, thereby pulling the pull rope 17 and pulling the sliding plate 8 to slide inside the L-shaped plate 7 under the guidance of the upper guide roller 22 and the lower guide roller 23. At the same time, it will push the top plate 9, the lower U-shaped frame 10, and the clamped test block to move. At the same time, it will drive the round rod 11 to slide inside the horizontal groove 12. And when the sliding plate 8 slides, it will pull the reset rope 41 to gradually pull out from the winding roller 26. And because the other end of the reset rope 41 is fixed on the winding roller 26, when the reset rope 41 is pulled out, it will drive the winding roller 26 to rotate simultaneously. At the same time, because one end of the scroll spring 24 is fixed on the side wall of the disc 25 and the other end is fixed inside the winding roller 26, when the winding roller 26 rotates, it will gradually compress the scroll spring 24;

[0036] Then, under the continuous push of the electric telescopic cylinder 18, the lower U-shaped frame 10 slides past the outlet 5 and moves into the friction testing machine housing 1. Subsequently, the round rod 11 slides out of the horizontal groove 12 and slides into the inclined groove 13. Thus, under the extrusion of the inclined groove 13, it will drive the top plate 9 to slide downward on the side wall of the sliding plate 8, and at the same time drive the lower U-shaped frame 10 and the test block to slide downward, and then gradually move the test block onto the friction roller on the friction mechanism 2 until the test block is completely in contact with the friction roller. At this time, the lower U-shaped frame 10 will touch the touch sensor 38. Then, the touch sensor 38 will transmit a signal to the controller. The controller controls the electric telescopic cylinder 18 to stop running and controls the friction mechanism 2 to start to conduct wear resistance testing on the test block. Finally, after the testing is completed, control the electric telescopic cylinder 18 to move in the reverse direction, and then repeat the above operations in reverse for resetting. Finally, push the test block out of the lower U-shaped frame 10 for weighing.

[0037] To improve the smoothness during the operation of the device, a fixed seat 21 is fixedly connected at the notch 14. The upper guide roller 22 is rotatably connected inside the fixed seat 21. The lower guide roller 23 is rotatably connected at the top of the L-shaped plate 7 at a position corresponding to the extension plate 15. And the pull rope 17 passes through the outer walls of the upper guide roller 22 and the lower guide roller 23 respectively. Through the settings of the upper guide roller 22 and the lower guide roller 23, it can play a guiding role in the sliding of the pull rope 17 and can avoid the direct contact of the pull rope 17 with the corner of the notch 14, thereby increasing the service life of the pull rope 17.

[0038] In order to firmly hold the test block, the clamping mechanism includes clamping plates 27. There are a pair of clamping plates 27. At both inner ends of the lower U-shaped frame 10, recessed grooves 28 are provided. The clamping plates 27 are arranged in the grooves 28. The grooves 28 are used to accommodate the clamping plates 27 and the rubber pads 37, avoiding obstruction when the lower U-shaped frame 10 moves to the side of the test block. On the opposite sides of the clamping plates 27, lower right-angle blocks 29 with inclined surfaces are fixedly connected and penetrate through the outer wall of the lower U-shaped frame 10. At the top of the top plate 9 and above the lower right-angle blocks 29, extrusion rods 30 are slidably connected through. The bottom of the extrusion rod 30 is inclined. A connecting plate 31 is fixedly connected between the tops of the extrusion rods 30. A upper right-angle block 32 with an inclined surface is fixedly connected to the top of the connecting plate 31. Top grooves 33 are provided at the tops of the L-shaped plate 7 and the extension plate 15. At the bottom of the push plate 19 and at the position of the top groove 33, an upper block 34 for extruding the inclined surface of the upper right-angle block 32 is fixedly connected. An extrusion right-angle block 6 with an inclined surface is fixedly connected inside the L-shaped plate 7 and above the inclined groove 13. Upper springs 35 are fixedly connected between the bottom of the top plate 9 and the outer walls of the extrusion rods 30. Lower springs 36 are fixedly connected between the bottoms of the lower right-angle blocks 29 and the outer walls of the lower U-shaped frame 10. Through the arrangement of the upper springs 35 and the lower springs 36, it is convenient to quickly reset the extrusion rods 30 and the lower right-angle blocks 29 when releasing the extrusion of the upper right-angle block 32.

[0039] When the electric telescopic cylinder 18 is started to drive the push plate 19 to move, it will drive the upper block 34 to move simultaneously. Then, the arc surface of the upper block 34 extrudes the inclined surface of the upper right-angle block 32, causing the upper right-angle block 32 to slide downward. At the same time, it drives the extrusion rod 30 to move downward and gradually stretch the upper spring 35. Subsequently, the inclined surface at the bottom of the extrusion rod 30 extrudes the inclined surface at the top of the lower right-angle block 29, thereby pushing the two lower right-angle blocks 29 to move towards each other and gradually compressing the lower spring 36, so as to push the clamping plates 27 to move towards each other, realizing the clamping and fixing of the test block in the lower U-shaped frame 10. Subsequently, through the continuous movement of the upper block 34, the bottom of the upper block 34 moves onto the inclined surface of the upper right-angle block 32, maintaining the extrusion of the upper right-angle block 32. At this time, the upper right-angle block 32 will slide out of the top groove 33 and be extruded by the upper block 34 to the inside of the L-shaped plate 7. Subsequently, the push plate 19 moves to the side of the driving block 16, thereby pushing the driving block 16 to drive the sliding plate 8 and the lower U-shaped frame 10 to move. At the same time, under the thrust of the sliding plate 8, the top plate 9 and the upper right-angle block 32 will be pushed away from below the upper block 34 and pushed to the lower part of the L-shaped plate 7, so as to squeeze the upper right-angle block 32 through the inside of the L-shaped plate 7 and maintain the clamping of the test block inside the lower U-shaped frame 10.

[0040] Subsequently, the clamped test block is moved to the friction mechanism 2 for detection. During this process, when the round rod 11 is extruded downward by the inclined groove 13, the upper right-angle block 32 will also move below the extrusion right-angle block 6 (and the top side of the upper right-angle block 32 can be set to a bevel shape for better extrusion by the bevel of the extrusion right-angle block 6). Thus, when the top plate 9 and the round rod 11 slide downward under the extrusion of the inclined groove 13, the extrusion right-angle block 6 will maintain the extrusion of the upper right-angle block 32. Finally, when resetting after the detection is completed, the above operations will be repeated in reverse for resetting. This process is repeated, thereby realizing the automatic loading and unloading of the device.

[0041] To improve the clamping effect on the test block, rubber pads 37 are fixedly connected to the closer sides of the clamping plates 27. Through the setting of the rubber pads 37, the anti-slip property after the clamping plates 27 clamp the test block can be improved, thereby enhancing the stability of the clamping mechanism for clamping the test block. Moreover, the rear side of the upper block 34 is set as a smooth arc surface. Setting the side wall of the upper block 34 as a smooth arc surface can more smoothly extrude the upper right-angle block 32 to slide downward, improving the smoothness during the operation of the device.

[0042] To improve the automation efficiency of the device, a touch sensor 38 is fixedly connected to the side wall of the L-shaped plate 7 and away from the raised platform 4. The touch sensor 38 is electrically connected to the friction mechanism 2 and the electric telescopic cylinder 18 through a controller. Through the setting of the touch sensor 38, after the electric telescopic cylinder 18 pulls the sliding plate 8, the lower U-shaped frame 10, and the test block to move above the friction mechanism 2, at this time, the lower U-shaped frame 10 will touch the touch sensor 38. Subsequently, the touch sensor 38 transmits a signal to the controller, and the controller controls the electric telescopic cylinder 18 to stop operating. At the same time, the controller controls the friction mechanism 2 to start, realizing the automatic detection of the PVD coating on the test block, eliminating the need for the tester to start the friction mechanism 2 after the test block arrives, further improving the convenience performance of the device.

[0043] To be able to automatically clean the debris at the bottom of the test block after the test is completed, a cleaning brush 39 for cleaning the debris at the bottom of the test block is fixedly connected inside the friction testing machine housing 1 and below the outlet 5. A collection box 40 for collecting debris is slidably connected to the inner bottom end of the friction testing machine housing 1. Through the setting of the cleaning brush 39, when the reset mechanism pulls the sliding plate 8 and the test block and other structures for resetting, it can drive the test block to pass above the cleaning brush 39, thereby automatically cleaning the debris at the bottom of the test block, ensuring the accuracy of subsequent weighing, improving the accuracy of the test results of the device, and further enhancing the convenience performance of the device. At the same time, through the setting of the collection box 40, the debris swept down and dropped during the friction testing process can be collected and processed, facilitating subsequent unified handling and further improving the convenience performance of the device.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention.

[0045] Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A PVD coating detection device, comprising a friction test housing (1) and a precision electronic scale (42), and a friction mechanism (2) arranged on the friction test housing (1), characterized in that: The side wall of the friction test housing (1) is fixedly connected to a T-shaped base (3), the top of the T-shaped base (3) is fixedly connected to a heightened platform (4), the precision electronic scale (42) is fixedly connected to the top of the heightened platform (4), the side wall of the friction test housing (1) is provided with an outlet (5), the inner side of the outlet (5) is fixedly connected to an L-shaped plate (7), the inner side of the L-shaped plate (7) is laterally slidably connected to a sliding plate (8), the side wall of the sliding plate (8) is longitudinally slidably connected to a top plate (9), the bottom of the top plate (9) is fixedly connected to a lower U-shaped frame (10), and the lower U-shaped frame (10) is provided with a clamping mechanism for clamping a test block; A round rod (11) is fixedly connected to the rear side of the top plate (9); a transverse groove (12) is provided on the side wall of the L-shaped plate (7), and the round rod (11) is movably connected to the inner side of the transverse groove (12); a downwardly inclined groove (13) is provided on the side wall of the transverse groove (12) and located above the friction mechanism (2); a notch (14) is provided on the top side of the L-shaped plate (7); an extension plate (15) is fixedly connected to the top end of the rear side of the L-shaped plate (7); a driving block (16) is slidably connected to the top of the L-shaped plate (7) and at a position corresponding to the extension plate (15); a pull rope (17) is fixedly connected between the driving block (16) and the side wall of the sliding plate (8); a reset mechanism for pulling the sliding plate (8) to reset is provided on the L-shaped plate (7); an electric telescopic cylinder (18) is fixedly connected to the top of the extension plate (15); and a push plate (19) for pushing the driving block (16) to move is fixedly connected to the output end of the electric telescopic cylinder (18); A fixing seat (21) is fixedly connected to the notch (14), an upper guide roller (22) is rotatably connected to the inner side of the fixing seat (21), a lower guide roller (23) is rotatably connected to the top of the L-shaped plate (7) and at a position corresponding to the extension plate (15), and the pull rope (17) passes through the outer walls of the upper guide roller (22) and the lower guide roller (23) respectively; The clamping mechanism comprises a clamping plate (27), a pair of the clamping plates (27) are provided, both ends of the inner side of the lower U-shaped frame (10) are provided with inwardly sunken grooves (28), the clamping plates (27) are arranged in the grooves (28), and the away side of the clamping plates (27) are fixedly connected with a lower right-angle block (29) having an inclined surface and passing through the outer wall of the lower U-shaped frame (10), and the top of the top plate (9) and located above the lower right-angle block (29) are slidably connected with an extrusion rod (30), and the extrusion rod (30) is The bottom is arranged to be inclined, a connecting plate (31) is fixedly connected between the top ends of the extrusion rods (30), an upper right-angle block (32) having an inclined surface is fixedly connected to the top of the connecting plate (31), a top groove (33) is provided on the top of the L-shaped plate (7) and the extension plate (15), an upper block (34) for extruding the inclined surface of the upper right-angle block (32) is fixedly connected to the bottom of the push plate (19) and located at the top groove (33), and an extrusion right-angle block (6) having an inclined surface is fixedly connected to the inner side of the L-shaped plate (7) and located above the inclined groove (13).

2. A PVD coating detection device according to claim 1, characterized in that: A pair of support frames (20) are fixedly connected between the bottom of the extension plate (15) and the top of the T-shaped base (3).

3. A PVD coating detection device according to claim 1, characterized in that: The reset mechanism comprises a scroll spring (24); a pair of disks (25) are fixedly connected to the side walls of the L-shaped plate (7); a winding roller (26) is rotatably connected between the disks (25); a reset rope (41) is wound around the winding roller (26); one end of the reset rope (41) is fixedly connected to the outer wall of the winding roller (26); the other end of the reset rope (41) is fixedly connected to the side wall of the sliding plate (8); the scroll spring (24) is arranged on the inner side of the winding roller (26); one end of the scroll spring (24) is fixedly connected to the inner side of the winding roller (26); the other end of the scroll spring (24) is fixedly connected to the side wall of one of the disks (25).

4. A PVD coating detection device according to claim 1, characterized in that: An upper spring (35) is fixedly connected between the bottom of the top plate (9) and the outer wall of the extrusion rod (30), and a lower spring (36) is fixedly connected between the bottom of the lower right-angle block (29) and the outer wall of the lower U-shaped frame (10).

5. A PVD coating detection device according to claim 1, characterized in that: The clamping plates (27) are fixedly connected to one side thereof with a rubber pad (37), and the rear side of the upper block (34) is configured as a smooth arc surface.

6. A PVD coating detection device according to claim 1, characterized in that: A touch sensor (38) is fixedly connected to the side wall of the L-shaped plate (7) and on the side away from the elevated platform (4); the touch sensor (38) is electrically connected to the friction mechanism (2) and the electric telescopic cylinder (18) via a controller.

7. A PVD coating detection device according to claim 1, characterized in that: A cleaning brush (39) for cleaning debris at the bottom of the test block is fixedly connected to the inner side of the friction test housing (1) and below the outlet (5), and a collection box (40) for collecting debris is slidably connected to the bottom end of the friction test housing (1).

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