Paint film friction resistance test device

Abstract

The utility model relates to the technical field of detection equipment, in particular to a paint film friction resistance test device which comprises a bottom plate and the like, the bottom plate is a bearing carrier of the test device, the guide cylinder is fixedly installed on the top surface of the bottom plate, an opening is formed in the top of the guide cylinder, the piston is installed in the guide cylinder in a sliding mode, the piston is located at the opening in the top of the guide cylinder, and the piston cannot rotate in the guide cylinder; the storage plate is fixedly connected to the top of the piston, and the storage plate is located above the guide cylinder and does not make contact with the guide cylinder; the pressure sensor is arranged at the inner bottom of the guide cylinder; and the pressing block is fixedly arranged at the bottom end of the piston. According to the utility model, the pressure on the paint film on the object placing plate is monitored in real time through the pressure sensor, so that the force applied on the paint film in the test process can be ensured to be accurate and controllable, which is crucial for evaluating the friction resistance of the paint film under different conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field especially relates to a paint film friction resistance test device. BACKGROUND

[0002] With the improvement of consumer's quality requirement to product and the progress of technology, various kinds of paint and coating material appear on the market, these materials not only need to be beautiful, but also need to have good durability and functionality, among which the friction resistance is an important index to evaluate its service life, therefore it is particularly important to develop a method which can accurately measure and compare the friction resistance between different coating materials.

[0003] The patent with the patent announcement number CN213022702U discloses a paint film wear resistance detection device, which comprises a wear resistance detection device body, the wear resistance detection device body comprises a support, a detection base, a relay, a lifting device, a bearing table, a fixing device, a moving device, a friction structure and an electrical controller, the support is welded on both side ends of the detection base, the relay is installed in the inner cavity of the detection base, the lifting device is arranged at the side end of the relay, and the lifting device is fixedly connected with the bearing table; the detection device adjusts the distance between the friction disc and the bearing table through the lifting device, so as to achieve the pressure value of the friction disc on the paint film to be detected, although the detection accuracy can be improved to a certain extent, there are still some problems in actual application, because this adjusting mode may not guarantee that the pressure remains constant during the whole test process, if the pressure fluctuates greatly, the wear degree at different time points or regions may be inconsistent, thereby affecting the accuracy and repeatability of the final result, and there is no mention of how to directly measure the actual pressure acting on the paint film, which may make it difficult for the operator to accurately judge whether the current applied pressure meets the expected set value. UTILITY MODEL CONTENTS

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a paint film friction resistance test device.

[0005] The technical scheme is as follows: a paint film rubbing resistance test device, comprising a bottom plate, a guide cylinder and a piston, the bottom plate is a load-bearing carrier of the test device, the guide cylinder is fixedly installed on the top surface of the bottom plate, the top of the guide cylinder is provided with an opening, the piston is slidably installed in the guide cylinder, the piston is located at the top opening of the guide cylinder, and the piston cannot rotate in the guide cylinder; further comprising: a storage plate fixedly connected to the top of the piston, the storage plate is located above the guide cylinder and does not contact the guide cylinder; a pressure sensor arranged at the inner bottom of the guide cylinder; a pressure block fixedly arranged at the bottom end of the piston, the pressure block cooperates with the pressure sensor to realize real-time reaction of the test pressure of the paint film on the storage plate; two positioning screws are symmetrically and rotatably installed on the top surface of the storage plate; a pressure plate nut is threadedly rotatably fitted on the positioning screw, and the pressure plate nut is used for limiting and pressing the paint film; two air cylinders are symmetrically installed on the two sides of the guide cylinder on the bottom plate; two mounting frames are symmetrically fixedly arranged at the ends of the telescopic rods of the two air cylinders; a polishing piece is arranged on the telescopic rod of the air cylinder through the mounting frame, and the polishing piece is used for applying pressure to the paint film limited on the storage plate and performing polishing test; in the polishing test, the pressure sensor is used to realize real-time sensing of the pressure of the storage plate on the pressure plate, so that the friction resistance performance of the paint film under different pressures by the polishing piece can be better known.

[0006] Preferably, the top surface of the storage plate is made of elastic material, and the bottom surface of the pressure plate nut is provided with a buffer pad, which is lifted under the thread guidance of the positioning screw, so that the paint film placed on the storage plate is elastically limited by the buffer pad of the pressure plate nut, thereby improving the convenience and stability of paint film disassembly.

[0007] Preferably, the polishing piece comprises a motor and a polishing wheel, the motor is fixedly installed on the mounting frame, the output shaft of the motor is provided with the polishing wheel, the polishing wheel is located above the storage plate, the polishing wheel and the motor are detachably installed, the polishing wheel can be replaced according to the actual friction test of the paint film, and the application range of the device is improved.

[0008] Preferably, a mounting rod is fixedly connected to the mounting frame, a rotary encoder is arranged at the lower end of the mounting rod, the detection shaft of the rotary encoder is connected with the rotating shaft of the polishing wheel, the rotary encoder is used for detecting the angular displacement or rotating speed of the polishing wheel, and assists the user to adjust the rotating speed of the polishing wheel by controlling the motor, a digital display screen is also arranged on the mounting rod, the digital display screen is electrically connected with the rotary encoder, and the digital display screen is used for displaying the measured value of the rotary encoder, so that the user can intuitively know the polishing state of the polishing wheel to the paint film.

[0009] As preferred, the electric slide rails are further included, two electric slide rails are symmetrically and fixedly installed on the bottom plate, the cylinder is installed on the bottom plate through the corresponding electric slide rail on the same side, the electric slide rails drive the whole polishing part to move through the cylinder, so that the polishing part can be used for resisting friction test on different positions of the limiting paint film on the object plate, and when the polishing parts on the two sides are driven to open towards the direction away from each other through the electric slide rails, the user can conveniently load and unload the materials.

[0010] As preferred, the positioning rod is upwardly protruded and fixed at the central position of the object plate, the upper end of the positioning rod is in a pointed cone shape, and the positioning rod is used for accurately positioning the disc-shaped paint film and accurately limiting the paint film in cooperation with the pressing plate nut.

[0011] The utility model discloses the beneficial effects are:

[0012] 1, the utility model discloses a pressure sensor real -time monitoring the pressure that paint film on the object plate bore, can ensure that the force that the paint film bore in the test process is accurate controllable, this is important for evaluating the friction resistance of paint film under different conditions.

[0013] 2, the utility model discloses the top surface of object plate adopts elastic material, and the bottom of pressing plate nut sets up the buffer pad, can realize the flexible location of paint film under the action of the positioning screw, and this location mode not only can improve the stability when paint film is fixed, but also simplifies the process of loading and unloading and improves the operation convenience.

[0014] 3, the utility model discloses still can through rotary encoder and digital display screen, can accurately measure and show the working condition of polishing wheel, provides the intuitive data feedback for the user, is convenient for adjusting experimental parameter to reach the best effect, and the electric slide rail on the bottom plate makes the whole polishing part can freely move according to the need, carries out comprehensive test to the multiple point of sample surface. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is the sectional view of the utility model guiding cylinder and object plate.

[0017] Figure 3 It is the schematic view of the utility model object plate, positioning screw, pressing plate nut and positioning rod.

[0018] Figure 4 It is the schematic view of the utility model mounting bracket, motor, polishing wheel, mounting rod and rotary encoder.

[0019] Explanation of reference signs: 1 - base plate, 2 - guide cylinder, 3 - piston, 4 - storage plate, 5 - pressure sensor, 6 - pressing block, 7 - positioning screw, 8 - pressing plate nut, 81 - buffer pad, 9 - air cylinder, 10 - mounting frame, 11 - motor, 12 - polishing wheel, 13 - mounting rod, 14 - rotary encoder, 15 - digital display screen, 16 - electric sliding rail, 17 - positioning rod. DETAILED DESCRIPTION

[0020] The exemplary embodiments will be described in detail herein below with reference to the accompanying drawings. In the following description, the same numbers refer to the same elements throughout the drawings, unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0021] A paint film rubbing resistance test device, as shown in Figures 1-4 , comprises a base plate 1, a guide cylinder 2 and a piston 3. The base plate 1 is a load-bearing carrier of the test device. The guide cylinder 2 is fixedly installed on the top surface of the base plate 1. The guide cylinder 2 is provided with an opening at the top. The piston 3 is slidably installed in the guide cylinder 2. The piston 3 is located at the top opening of the guide cylinder 2 and cannot rotate in the guide cylinder 2. The device further comprises a storage plate 4, which is fixedly connected to the top of the piston 3 and is located above the guide cylinder 2 without contacting the guide cylinder 2. A pressure sensor 5 is arranged at the inner bottom of the guide cylinder 2. A pressing block 6 is fixedly arranged at the bottom end of the piston 3. The pressing block 6 cooperates with the pressure sensor 5 to real-time reflect the test pressure of the paint film on the storage plate 4. Two positioning screws 7 are symmetrically and rotatably installed on the top surface of the storage plate 4. A pressing plate nut 8 is threadedly rotatably fitted on the positioning screw 7. The pressing plate nut 8 is used to limit and compress the paint film placed. Two air cylinders 9 are symmetrically installed on both sides of the guide cylinder 2 on the base plate 1. A mounting frame 10 is symmetrically fixedly arranged at the end of the telescopic rod of the two air cylinders 9. A polishing member is arranged on the telescopic rod of the air cylinder 9 through the mounting frame 10. The polishing member is used to apply pressure to the paint film limited on the storage plate 4 and perform polishing test. In the polishing test, the pressure sensor 5 is used to real-time sense the pressure of the storage plate 4 on the pressing plate, so as to better know the rubbing resistance of the paint film under different pressures by the polishing member. The top surface of the storage plate 4 is made of elastic material. The bottom surface of the pressing plate nut 8 is provided with a buffer pad 81. The buffer pad 81 is lifted under the thread guidance of the positioning screw 7, so that the paint film placed on the storage plate 4 is elastically limited by the buffer pad 81 of the pressing plate nut 8, thereby improving the convenience and stability of disassembling and assembling the paint film.

[0022] As Figure 4As shown, the polishing member includes a motor 11 and a polishing wheel 12, the motor 11 is fixedly installed on the mounting frame 10, the output shaft of the motor 11 is provided with the polishing wheel 12, the polishing wheel 12 is located above the storage plate 4, the polishing wheel 12 and the motor 11 are detachably installed, the polishing wheel 12 can be replaced according to the actual friction test of the paint film, and the application range of the device is improved.

[0023] As shown in Figure 2 and Figure 4 As shown, the mounting frame 10 is fixedly connected with a mounting rod 13, the lower end of the mounting rod 13 is provided with a rotary encoder 14, the detection shaft of the rotary encoder 14 is connected with the rotating shaft of the polishing wheel 12, the rotary encoder 14 is used for detecting the angular displacement or rotating speed of the polishing wheel 12, assisting the user to adjust the rotating speed of the polishing wheel 12 through the control of the motor 11, the mounting rod 13 is also provided with a digital display screen 15, the digital display screen 15 is electrically connected with the rotary encoder 14, and the digital display screen 15 is used for displaying the measured value of the rotary encoder 14, so that the user can intuitively know the polishing state of the polishing wheel 12 to the paint film.

[0024] As shown in Figure 2 and Figure 3 As shown, the device also includes an electric sliding rail 16, two electric sliding rails 16 are symmetrically and fixedly installed on the bottom plate 1, the cylinder 9 is installed on the bottom plate 1 through the corresponding electric sliding rail 16 on the same side, the electric sliding rail 16 drives the whole polishing member and the like to move through the cylinder 9, so that the polishing member can be used to test the friction resistance of the paint film at different positions of the storage plate 4, and when the two polishing members are driven by the electric sliding rail 16 to open away from each other, the user can conveniently load and unload; The central position of the storage plate 4 is fixedly provided with an upwardly protruding positioning rod 17, the upper end of the positioning rod 17 is in the shape of a sharp cone, and the positioning rod 17 is used for accurately positioning the disc-shaped paint film, and the paint film is more accurately and symmetrically limited by cooperating with the pressing plate nut 8.

[0025] When the device is used to test the paint film, first, the paint film to be tested is placed on the placement plate 4, the placement plate 4 is made of elastic material, and the top surface is provided with a positioning rod 17 protruding upward, the pointed upper end of the positioning rod 17 is used for accurate positioning of the disc-shaped paint film, so as to ensure that the paint film can be accurately centered and placed, then the buffer pad 81 on the bottom surface of the pressing plate nut 8 is brought into contact with the paint film by screwing the adjusting positioning screw 7, and appropriate pre-tightening force is applied to realize stable fixation of the paint film, when the paint film is fixed, the air cylinder 9 starts to work, drives the mounting bracket 10 and the polishing part to move towards the placement plate 4, until the polishing wheel 12 contacts the surface of the paint film, at this time, the pressure sensor 5 at the bottom of the guide cylinder 2 can monitor the pressure value applied by the polishing part to the paint film on the placement plate 4 in real time through the transmission of the piston 3 and the pressing block 6, so as to ensure the consistency and controllability of the pressure on the paint film during the test, then the motor 11 is started and drives the polishing wheel 12 to rotate, and the surface of the paint film is polished, the rotary encoder 14 installed on the mounting bracket 10 detects the angular displacement or rotating speed of the polishing wheel 12, and transmits the data to the digital display screen 15 for display, the user can adjust the rotating speed of the motor 11 according to the need, so as to control the grinding intensity of the polishing wheel 12, and observe the wear of the paint film under different pressures at the same time, in order to test the friction resistance of the paint film at different positions, the electric sliding rail 16 system can move the polishing part along the two guide rails on the bottom plate 1, so that the polishing wheel 12 can uniformly polish the paint film in different areas, in addition, when the paint film is loaded and unloaded, the polishing parts on both sides can be opened away from each other through the electric sliding rail 16, so as to facilitate quick replacement of the paint film sample.

[0026] Although the present application is described in detail with reference to the above embodiments, it is obvious to those skilled in the art that various changes or modifications can be made to the present application without departing from the principles and spirit of the application defined in the claims, and therefore the detailed description of the embodiments of the present application is only used to explain but not to limit the present application, and the protection scope is defined by the content of the claims.

Claims

1. A paint film rubbing resistance test device, comprising a base plate (1), a guide cylinder (2) and a piston (3), the guide cylinder (2) is fixedly installed on the top surface of the base plate (1), the top of the guide cylinder (2) is provided with an opening, the piston (3) is slidingly installed in the guide cylinder (2), and the piston (3) is located at the top opening of the guide cylinder (2); characterized in that further comprising: a storage plate (4) fixedly connected to the top of the piston (3), the storage plate (4) is located above the guide cylinder (2) and does not contact the guide cylinder (2); a pressure sensor (5) arranged at the inner bottom of the guide cylinder (2); a pressure block (6) fixedly arranged at the bottom end of the piston (3); a positioning screw (7) provided with two and symmetrically rotatably installed on the top surface of the storage plate (4); a pressing plate nut (8) threadedly rotatably fitted on the positioning screw (7), the pressing plate nut (8) is used for limiting and pressing the placed paint film; two air cylinders (9) symmetrically installed on both sides of the guide cylinder (2) on the base plate (1); a mounting bracket (10) symmetrically fixedly arranged at the telescopic rod end of the two air cylinders (9); a polishing member arranged on the telescopic rod of the air cylinder (9) through the mounting bracket (10), the polishing member is used for applying pressure to the paint film limited on the storage plate (4) and performing polishing test.

2. A paint film rub resistance test apparatus according to claim 1, wherein The top surface of the storage plate (4) is made of elastic material, and the bottom surface of the pressing plate nut (8) is provided with a buffer pad (81).

3. A paint film rub resistance test apparatus according to claim 2, wherein the substrate is a glass plate. The polishing member comprises a motor (11) and a polishing wheel (12), the motor (11) is fixedly installed on the mounting bracket (10), a polishing wheel (12) is installed on the output shaft of the motor (11), the polishing wheel (12) is located above the storage plate (4), and the polishing wheel (12) and the motor (11) are detachably installed.

4. A paint film rub resistance test apparatus according to claim 3, wherein the substrate is a glass plate. The mounting bracket (10) is fixedly connected with a mounting rod (13), the lower end of the mounting rod (13) is provided with a rotary encoder (14), the detection shaft of the rotary encoder (14) is connected with the rotating shaft of the polishing wheel (12), a digital display screen (15) is also installed on the mounting rod (13), the digital display screen (15) and the rotary encoder (14) are electrically connected, and the digital display screen (15) is used for displaying the measured value of the rotary encoder (14).

5. A paint film rub resistance test apparatus according to claim 4, wherein the substrate is a glass plate. Further comprising an electric sliding rail (16), two electric sliding rails (16) are symmetrically fixedly installed on the base plate (1), the air cylinder (9) is installed on the base plate (1) through the corresponding electric sliding rail (16) on the same side, and the electric sliding rail (16) drives the entire polishing member to move through the air cylinder (9).

6. A paint film rub resistance test apparatus according to claim 5, wherein the substrate is a glass plate. A positioning rod (17) protruding upward is fixedly arranged at the central position of the storage plate (4), the upper end of the positioning rod (17) is in the shape of a sharp cone, and the positioning rod (17) is used for accurately positioning the disc-shaped paint film.

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