CN220854402U - Test device - Google Patents

Abstract

The utility model provides a testing device which comprises a clamping unit, a force application unit, a driving unit, a display unit and a pressure sensing unit, wherein the driving unit is connected with the force application unit and drives the force application unit to do horizontal linear motion; the clamping unit is used for clamping a co-plating sheet with a film coating on the surface, and the part of the co-plating sheet exposed out of the clamping unit is positioned on the movement path of the force application unit; the pressure sensing unit is fixed on the force application unit, and the display unit is in signal connection with the pressure sensing unit; after the driving unit is started, the driving unit drives the force application unit to be close to the accompanying plating sheet, and one side of the force application unit, which is away from the pressure sensing unit, applies pressure to the accompanying plating sheet, so that the accompanying plating sheet bends towards the direction away from the force application unit until the driving unit stops moving, and the pressure sensing unit outputs the stress of the accompanying plating sheet in the bending process and transmits the stress to the display unit. The utility model can carry out simple and quick qualitative comparison on the bending strength of different film coatings, and has lower cost.

Description

Test device

Technical Field

The utility model relates to the technical field of coating processes, in particular to a testing device.

Background

Hardness is a performance indicator that measures the degree of softness of a material. It can be understood as the ability of a material to resist elastic deformation, plastic deformation or damage, and also expressed as the ability of a material to resist residual deformation and reverse damage, where hardness is not a simple physical concept, but rather is a comprehensive indicator of mechanical properties such as elasticity, plasticity, strength, and toughness of a material.

For thin film coatings in a film coating process, hardness is a fundamental indicator of its quality. The hardness test method is many, and the test methods are different, so that the test results are different. If the film hardness measuring device is suitable for film hardness measurement, the film hardness can be directly measured by the traditional microhardness meter, but the influence of a matrix is difficult to avoid, and small indentations generated during small-load pressing are difficult to accurately measure. The nanometer press-in instrument is a high-precision instrument capable of accurately controlling and measuring the press-in depth. The technique for measuring the hardness value through the depth of penetration can reduce the influence of the hardness of the matrix on the measured hardness of the film, and meanwhile, the error generated is smaller than that of the diagonal line of the direct pressure measurement mark. However, the nano-indenter has high requirements on the surface finish of the sample, and has larger error of the test result aiming at the film with uneven surface, and the instrument has high price and is difficult to be widely applied to the actual industry.

In the prior art, a device for qualitatively measuring the bending strength of the film coating by comparing the stress of the film coating during bending fracture is not provided, so that the hardness of the film coating is indirectly judged.

Accordingly, there is a need for a new testing device that solves the above-mentioned problems of the prior art.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide a testing device.

In order to achieve the above purpose, the testing device of the utility model comprises a clamping unit, a force application unit, a driving unit, a display unit and a pressure sensing unit, wherein the driving unit is connected with the force application unit and drives the force application unit to do horizontal linear motion; the clamping unit is used for clamping a co-plating sheet with a film coating on the surface, and the part of the co-plating sheet, which is exposed out of the clamping unit, is positioned on the movement path of the force application unit; the pressure sensing unit is fixed on the force application unit, and the display unit is in signal connection with the pressure sensing unit; after the driving unit is started, the driving unit drives the force application unit to approach the accompanying plating sheet, and makes one side of the force application unit away from the pressure sensing unit apply pressure to the accompanying plating sheet, so that the accompanying plating sheet bends towards the direction away from the force application unit until the driving unit stops moving, and the pressure sensing unit outputs the stress of the accompanying plating sheet in the bending process and transmits the stress to the display unit.

The testing device has the beneficial effects that:

The driving unit drives the force application unit to be close to the accompanying plating sheet, and enables one side of the force application unit, which is away from the pressure sensing unit, to apply pressure to the accompanying plating sheet, so that the accompanying plating sheet bends towards the direction away from the force application unit until the driving unit stops moving, the pressure sensing unit outputs the stress of the accompanying plating sheet in the bending process and transmits the stress to the display unit, and the display unit comprises a display and a Programmable Logic Controller (PLC), wherein the Programmable Logic Controller (PLC) is used for collecting and outputting the pressure value sensed by the pressure sensing unit in a concentrated mode, and a stress curve graph of the accompanying plating sheet is drawn on the display according to time by manpower. The test device is characterized in that the change of the bearing force of the accompanying plating sheets plated with different film coatings in the process of bending until the film coatings are broken is tested through bending the accompanying plating sheets plated with different film coatings with the same specification, so that the stress curve graphs of the different film coatings are obtained, the stress magnitudes of the accompanying plating sheets when the different film coatings are broken can be compared, further, the bending strength of the different film coatings can be visually, simply and rapidly compared qualitatively, further, the hardness of the different film coatings can be indirectly compared, and the test device is lower in cost and can be widely applied to industrial production.

Further, the force application unit comprises a first baffle plate, a second baffle plate and a connecting piece, wherein the connecting piece is used for connecting the second baffle plate to the driving unit, an elastic connecting piece is arranged between the first baffle plate and the second baffle plate, one end of the elastic connecting piece is connected with the first baffle plate, and the other end of the elastic connecting piece is connected with one side, facing the first baffle plate, of the second baffle plate, so that a gap is formed between the first baffle plate and the second baffle plate; the pressure sensing unit is positioned in the gap and connected with the first baffle plate and the second baffle plate; the driving unit drives the second baffle to do linear motion, so that the second baffle drives the first baffle to be close to the accompanying plating piece, and the first baffle applies pressure to the accompanying plating piece.

Further, a plurality of sliding rollers are arranged on one side of the first baffle, facing the accompanying plate, and are sequentially arranged on the first baffle in parallel, and the axes of the sliding rollers are parallel to each other and are parallel to the crease direction generated in the bending process of the accompanying plate, so that the resistance of the accompanying plate between the bending process and the first baffle is reduced.

Further, the driving unit comprises a driving piece, a screw rod, a sliding block and a sliding rail, wherein the screw rod is connected with the driving piece, the sliding block is movably sleeved on the screw rod, the sliding block is fixedly connected with the connecting piece, and the connecting piece is in sliding connection with the sliding rail; the driving piece drives the screw to rotate, so that the screw drives the sliding block to do linear motion along the axis of the screw, and further the sliding block drives the connecting piece to do linear motion on the sliding rail.

Further, the connecting piece is provided with a sliding part, and the sliding part is contacted with the sliding rail so as to reduce the resistance of the connecting piece when moving on the sliding rail.

Further, the clamping unit comprises a base, a fastening piece, a first clamping tooth and a second clamping tooth, wherein the fastening piece is arranged in the base in a penetrating way to form threaded running fit, the first clamping tooth is fixed on the base, and the second clamping tooth is fixed on one side, close to the first clamping tooth, of the fastening piece; a gap exists between one side, away from the fastener, of the second clamping tooth and the first clamping tooth, the accompanying plating sheet is positioned in the gap, and the second clamping tooth is driven to be close to the first clamping tooth by rotating the fastener, so that the gap is reduced, and the accompanying plating sheet is fixed; the first clamping teeth are provided with grooves, and the grooves are used for placing the accompanying plating sheets so as to fix the clamping positions of the accompanying plating sheets.

Further, the testing device further comprises an image recording unit, wherein the image recording unit is arranged on one side, far away from the force application unit, of the clamping unit and is used for recording images of bending positions of the accompanying plating sheets in the bending process. The beneficial effects are that: and by observing the fracture condition of the film coating at the bending part of the accompanying plating sheet in the bending process and the combination condition between the film coating and the base material of the accompanying plating sheet at the fracture part of the film coating, the combination force between the film coating and the base material of the accompanying plating sheet is simply judged.

Further, the image recording unit includes a CCD camera.

Further, the testing device further comprises an angle measuring unit, wherein the angle measuring unit is fixed on the first clamping teeth and is used for measuring the bending angle of the accompanying plating sheet, and a plurality of angle scale marks from 0 degrees to 180 degrees are uniformly distributed on the angle measuring unit; when bending does not occur, the clamped part of the side edge of the accompanying plating sheet and the part of the side edge of the accompanying plating sheet, which is exposed out of the first clamping tooth, are positioned on the same straight line, the clamped part of the side edge of the accompanying plating sheet and the 0-degree scale mark of the angle measuring unit are parallel to each other, the part of the side edge of the accompanying plating sheet, which is exposed out of the first clamping tooth, and the 180-degree scale mark of the angle measuring unit are parallel to each other, and the angle measuring unit displays that the initial angle of the accompanying plating sheet is 180 degrees; in the bending process, the crease produced by the accompanying plating sheet is perpendicular to the center point of the angle measuring unit, the clamped part of the side edge of the accompanying plating sheet is always parallel to the 0-degree scale mark of the angle measuring unit, after the driving unit stops moving, the side edge of the accompanying plating sheet is exposed out of the part of the first clamping tooth and a certain angle scale mark, which is positioned between the 0-degree scale mark and the 180-degree scale mark, of the angle measuring unit is parallel to each other, and at the moment, the angle difference value between the 180-degree scale mark and the certain angle scale mark is the bending angle of the accompanying plating sheet. The beneficial effects are that: when the driving unit stops moving, the bending angle of the accompanying plating sheet can be read out from the angle measuring unit, and the operation is simple and quick.

Further, the pressure sensing unit is a pressure sensor.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a testing device according to an embodiment of the present utility model;

FIG. 2 is a top view of a test device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the overall structure of a force applying unit according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram showing a driving unit and a force applying unit according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the overall structure of a bench vice according to the embodiment of the utility model;

Fig. 6 is a graph of pressure versus time during bending of a co-plated sheet according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.

Aiming at the problems existing in the prior art, the embodiment of the utility model provides a testing device which comprises a clamping unit, a force application unit, a driving unit, a display unit and a pressure sensing unit, wherein the driving unit is connected with the force application unit and drives the force application unit to do horizontal linear motion; the clamping unit is used for clamping a co-plating sheet with a film coating on the surface, and the part of the co-plating sheet, which is exposed out of the clamping unit, is positioned on the movement path of the force application unit; the pressure sensing unit is fixed on the force application unit, and the display unit is in signal connection with the pressure sensing unit; after the driving unit is started, the driving unit drives the force application unit to approach the accompanying plating sheet, and makes one side of the force application unit away from the pressure sensing unit apply pressure to the accompanying plating sheet, so that the accompanying plating sheet bends towards the direction away from the force application unit until the driving unit stops moving, the pressure sensing unit outputs the stress of the accompanying plating sheet in the bending process and transmits the stress to the display unit, and the display unit comprises a display and a Programmable Logic Controller (PLC), wherein the Programmable Logic Controller (PLC) is used for collecting and outputting the pressure value sensed by the pressure sensing unit in a concentrated mode, and is manually drawn into a stress graph of the accompanying plating sheet on the display according to time. Therefore, the test device provided by the utility model tests the change of the bearing force of the accompanying plating sheets plated with different film coatings by bending the same accompanying plating sheets plated with different film coatings with the same thickness until the film coatings are broken, so as to obtain the stress curve graph of the different film coatings, and further, the stress of the accompanying plating sheets when the different film coatings are broken can be compared, further, the bending strength of the different film coatings can be visually, simply and rapidly compared qualitatively, and further, the hardness of the different film coatings can be indirectly compared.

FIG. 1 is a schematic diagram of the overall structure of a testing device according to an embodiment of the present utility model; fig. 2 is a top view of a test device according to an embodiment of the present utility model. Referring to fig. 1 and 2, in some embodiments of the present utility model, the testing apparatus includes a test bench 1, a driving unit 2, a force applying unit 3, a bench vice 4, an angle gauge 5, a device operation panel 6, a pressure sensor 7, and a CCD camera 8. The drive unit 2, the bench vice 4, the apparatus operation panel 6, and the CCD camera 8 are all fixed on the test bench 1. The driving unit 2 is connected with the force applying unit 3 and can drive the force applying unit 3 to move horizontally and linearly. The bench vice 4 is provided with a plating accompanying sheet 9 with a film coating on the clamping surface, one part of the plating accompanying sheet 9 is clamped by the bench vice 4, and the other part of the plating accompanying sheet 9 is exposed out of one side of the bench vice 4 away from the test bench 1. The part of the plating accompanying sheet 9, which is exposed out of the bench vice 4, is located on the moving path of the force applying unit 3, that is, in the process that the driving unit 2 drives the force applying unit 3 to do linear motion, when the force applying unit 3 moves to a certain position, the force applying unit 3 contacts with the part of the plating accompanying sheet 9, which is exposed out of the bench vice 4, that is, in the process that the force applying unit 3 does linear motion, the part of the plating accompanying sheet 9, which is exposed out of the bench vice 4, always moves linearly. The device operation panel 6 comprises a display and a Programmable Logic Controller (PLC), the pressure sensor 7 is fixed on one side of the force applying unit 3, which is away from the accompanying plating sheet 9, and is in signal connection with the Programmable Logic Controller (PLC) of the device operation panel 6, and the Programmable Logic Controller (PLC) is used for intensively collecting and outputting the pressure value sensed by the pressure sensor 7. The CCD camera 8 is connected with a Programmable Logic Controller (PLC) of the equipment operation panel 6 through signals, the CCD camera 8 is arranged in parallel with the bench vice 4 and is positioned on one side of the bench vice 4 far away from the force application unit 3, the part of the accompanying plating sheet 9 exposed out of the bench vice 4 is aligned, and one side of the accompanying plating sheet 9 with a film coating faces the CCD camera 8. The angle ruler 5 is fixed on the bench vice 4.

When the driving unit 2 is started, the driving unit 2 drives the force application unit 3 to do horizontal linear motion, and the part of the accompanying plating sheet 9, which is exposed out of the bench vice 4, is gradually close to the accompanying plating sheet 9 until the accompanying plating sheet 9 is contacted. The force applying unit 3 continuously applies pressure to the accompanying plate 9 after contacting with the part of the accompanying plate 9 where the bench vice 4 is exposed, so that the part of the accompanying plate 9 where the bench vice 4 is exposed bends towards the direction away from the force applying unit 3 and continuously approaches the bench vice 4 during bending. After the driving unit 2 stops moving, the bending of the portion of the plating accompanying sheet 9 exposed out of the bench vice 4 is stopped. The pressure sensor 7 continuously records and outputs the pressure born by the accompanying plating sheet 9 in the bending process of the accompanying plating sheet 9, and continuously transmits the pressure to a Programmable Logic Controller (PLC) of the equipment operation panel 6, the Programmable Logic Controller (PLC) outputs the pressure value sensed by the pressure sensor 7 along with time, and the pressure value output by the Programmable Logic Controller (PLC) is manually drawn into a pressure-time curve chart on a display of the equipment operation panel 6. The CCD camera 8 always records the image of the bending position of the film coating in the bending process of the accompanying plating sheet 9 from the start of the driving unit 2 until the stop of the driving unit 2. After the drive unit 2 stops moving, the bending angle of the plating partner 9 is read out from the angle gauge 5.

In some embodiments of the utility model, the angle detection unit comprises an angle ruler.

In some embodiments of the utility model, the display unit is a device operation panel.

In some embodiments of the utility model, the clamping unit is a bench vice.

In some embodiments of the present utility model, the co-plated sheet with the film coating is rectangular sheet, and may also be round, oval, square, or other irregular sheet.

In some embodiments of the utility model, the pressure sensing unit is a pressure sensor or a pressure gauge.

Fig. 3 is a schematic diagram of the overall structure of the force applying unit according to the embodiment of the present utility model. Referring to fig. 1 and 3, in some embodiments of the present utility model, the force applying unit 3 includes a first barrier 31, a second barrier 32, a connection member 33, and an elastic connection member 34, one end of the connection member 33 is fixed to the second barrier 32, and the other end of the connection member 33 is fixed to the driving unit 2. The second baffle 32 and the first baffle 31 are oppositely arranged, a through hole 321 is formed in the second baffle 32, the elastic connecting piece 34 comprises a spring 341 and a movable pin 342, one end of the movable pin 342 penetrates through the through hole 321 and is fixed on one side of the first baffle 31, which faces the second baffle 32, the outer diameter of the movable pin 342 is smaller than the aperture of the through hole 321, the other end of the movable pin 342 is located on one side, which faces away from the first baffle 31, of the second baffle 32, a fixed part 3421 is arranged on one end, which faces away from the first baffle 31, of the movable pin 342, the outer diameter of the fixed part 3421 is larger than the aperture of the through hole 321, and the movable pin 342 is prevented from being separated from the second baffle 32; the spring 341 is sleeved on a movable pin 342 between the first baffle 31 and the second baffle 32, one end of the spring 341 is abutted against one side of the first baffle 31 facing the second baffle 32, and the other end of the spring 341 is abutted against one side of the second baffle 32 facing the first baffle 31. Because of the presence of the spring 341, a gap exists between the second shutter 32 and the second shutter 32, the pressure sensor 7 is located in the gap, one end of the pressure sensor 7 is connected to the side of the first shutter 31 facing the second shutter 32, and the other end of the pressure sensor 7 is connected to the side of the second shutter 32 facing the first shutter 31. The driving unit 2 drives the second baffle 32 to do linear motion through the connecting piece 33, the second baffle 32 drives the first baffle 31 to do linear motion so that the first baffle 31 is close to the part of the accompanying plating sheet 9, which is exposed out of the bench vice 4, and drives the first baffle 31 to apply pressure to the part of the accompanying plating sheet 9, which is exposed out of the bench vice 4, so that the accompanying plating sheet 9 is bent.

In some embodiments of the utility model, the resilient connection comprises a spring.

Referring to fig. 1 and 3, in some embodiments of the present utility model, a plurality of sliding rollers 311 are disposed on a side of the first barrier 31 facing the portion of the plating sheet 9 exposed from the bench vice 4, that is, a side of the first barrier 31 facing away from the second barrier 32, and the plurality of sliding rollers 311 are disposed on the first barrier 31 in parallel with each other. When the first baffle 31 is close to the portion of the plating accompanying sheet 9 exposed out of the bench vice 4, the side surfaces of the sliding rollers 311 are in contact with the portion of the plating accompanying sheet 9 exposed out of the bench vice 4, and in the bending process of the portion of the plating accompanying sheet 9 exposed out of the bench vice 4, folds are generated on the portion of the plating accompanying sheet 9 exposed out of the bench vice 4, and the axes of the sliding rollers 311 are always parallel to each other and are parallel to the directions of the folds, so that the hard contact resistance of the first baffle 31 and the portion of the plating accompanying sheet 9 exposed out of the bench vice 4 is reduced.

In some embodiments of the utility model, the number of sliding rollers is not limited.

Fig. 4 is a schematic diagram of a driving unit and a force applying unit according to an embodiment of the present utility model. Referring to fig. 1, 3 and 4, in some embodiments of the present utility model, the driving unit 2 includes a servo motor 21, a screw 22, a slider (not shown in the drawings) and a slide rail 24, wherein the servo motor 21 is fixedly connected to the screw 22 and drives the screw 22 to rotate around its axis, and the servo motor 21 is simultaneously connected to a Programmable Logic Controller (PLC) of the device operation panel 6 through signals. The screw 22 and the slide rail 24 are juxtaposed. The sliding block is movably sleeved on the screw rod 22 and is in threaded connection with the screw rod 22, and meanwhile, the sliding block is fixedly connected with the connecting piece 33. The side of the connecting piece 33 away from the sliding block is located on the sliding rail 24 and can slide on the sliding rail 24 under the driving of the sliding block. The connecting piece 33 is provided with a sliding part 331, and the sliding part 331 is in contact with the slide rail 24, so that the resistance is reduced when the connecting piece 33 slides on the slide rail 24.

When the servo motor 21 is started, the servo motor 21 drives the screw 22 to rotate, the screw 22 drives the sliding block to linearly move on the screw 22 along the axis of the screw 22, and the sliding block drives the connecting piece 33 to linearly move on the sliding rail 24, so as to drive the first baffle 31 to be close to the part of the plating accompanying sheet 9 exposed out of the bench vice 4 and apply pressure to the part of the plating accompanying sheet 9 exposed out of the bench vice 4.

Fig. 5 is a schematic view of the overall structure of the bench vice according to the embodiment of the utility model. Referring to fig. 1 and 5, in some embodiments of the present utility model, the vise 4 includes a base 41, a fastener 42, a first clamping tooth 43 and a second clamping tooth 44. The base 41 is fixed on the test bench 1, a threaded hole 411 penetrating through the base 41 is formed in the base 41, threads are formed in the fastening piece 42, the fastening piece 42 penetrates through the threaded hole 411 to be in threaded connection with the threaded hole 411, and the length of the fastening piece 42 penetrating through the threaded hole 411 can be adjusted by rotating the fastening piece 42. The first clamping tooth 43 is fixed on the base 41, the second clamping tooth 44 is opposite to the first clamping tooth 43, and one side of the second clamping tooth 44 away from the first clamping tooth 43 is fixedly connected with one side of the fastener 42 close to the first clamping tooth 43. A gap exists between the side of the first clamping tooth 43 facing the second clamping tooth 44 and the side of the second clamping tooth 44 facing the first clamping tooth 43, and a groove (not shown in the figure) is arranged on the side of the first clamping tooth 43 facing the second clamping tooth 44, and the groove is used for placing the co-plating sheet 9 to determine the clamping position of the co-plating sheet 9, and ensures that the clamping position of the co-plating sheet 9 is fixed every time the testing device of the utility model is used. By rotating the fastener 42, the length of the fastener 42 penetrating through the base 41 is adjusted, the second clamping tooth 44 is driven to be close to the first clamping tooth 43, so that a gap between the first clamping tooth 43 and the second clamping tooth 44 is reduced, the first clamping tooth 43 and the second clamping tooth 44 clamp the co-plating piece 9 to fix the co-plating piece, and the force application direction of the first clamping tooth 43 and the second clamping tooth 44 clamping the co-plating piece is perpendicular to the co-plating piece.

Referring to fig. 1 and 5, in some embodiments of the present utility model, the angle gauge 5 is fixed on the first clamping tooth 43, the angle gauge 5 is semicircular, and the straight edge of the angle gauge 5 is parallel to the straight edge of the first clamping tooth 43. A plurality of angle scale marks ranging from 0 degrees to 180 degrees are uniformly distributed on the angle scale 5, and the part of the side edge of the accompanying plating piece 9 clamped by the bench vice 4 is parallel to the 0-degree scale marks of the angle scale 5. When the co-plating sheet 9 is not bent, the portion of the side edge of the co-plating sheet 9, where the first clamping teeth 43 are exposed, is parallel to the 180-degree scale line of the angle ruler 5, and at this time, the initial angle of the co-plating sheet 9 is 180 degrees. When the plating accompanying sheet 9 is in the bending process, the crease generated at the bending position of the side edge of the plating accompanying sheet 9 exposed out of the first clamping tooth 43 is perpendicular to the center point of the angle ruler 5, and the part of the side edge of the plating accompanying sheet 9 exposed out of the first clamping tooth 43 is bent towards the direction close to the bench vice 4, namely towards the direction of the 0 degree scale mark on the angle ruler 5. After the servo motor 21 stops moving, the portion of the side edge of the accompanying sheet 9 exposed out of the first clamping tooth 43 stops bending, at this time, the portion of the side edge of the accompanying sheet 9 exposed out of the first clamping tooth 43 is parallel to a certain angle scale line located between the 0 degree scale line and the 180 degree scale line on the angle scale 5, and the difference between the angle values shown by the angle scale line parallel to the portion of the side edge of the accompanying sheet 9 exposed out of the first clamping tooth 43 is the bending angle of the accompanying sheet 9.

Referring to fig. 1 to 5, the test device of the present utility model is used as follows: firstly, adjusting the bench vice 4 to clamp the co-plating sheet 9 with the film coating, namely, rotating the fastener 42 to enable the second clamping teeth 44 to be far away from the first clamping teeth 43, enlarging a gap between the second clamping teeth 44 and the first clamping teeth 43, placing the co-plating sheet 9 in a groove of the first clamping teeth 43, determining the initial position of the co-plating sheet 9, wherein part of the co-plating sheet 9 is positioned in the groove, and part of the co-plating sheet is exposed out of the groove; and then the fastener 42 is rotated in the opposite direction, so that the second clamping teeth 44 are close to the first clamping teeth 43, the gap between the first clamping teeth 43 and the second clamping teeth 44 is reduced, the co-plating sheet 9 is clamped, and the close contact between the co-plating sheet 9 and the groove is ensured. The plating sheet 9 is partially held by the bench vice 4, and the first clamping teeth 43 and the second clamping teeth 44 are partially exposed, thereby exposing the bench vice 4.

Then, a servo motor 21 is started by a Programmable Logic Controller (PLC) of the equipment operation panel 6, so that the screw 22 rotates to drive a sliding block to do linear motion on the screw 22 along the axis of the screw 22, the sliding block drives a connecting piece 33 to do linear sliding on the sliding rail 24, the connecting piece 33 drives a second baffle 32 and a part of the first baffle 31, which is exposed out of the bench vice 4, towards the plating accompanying sheet 9 to do linear motion, finally one side of the first baffle 31, which is away from the second baffle 32, is contacted with the part, exposed out of the bench vice 4, of the plating accompanying sheet 9, and pressure is applied to the part, exposed out of the bench vice 4, of the plating accompanying sheet 9, towards the direction away from the first baffle 31, which is close to the bench vice 4, of the bench vice 4 is bent. The servo motor 21 is started and the motion stroke of the servo motor 21 is set to be 2.5cm, namely, under the action of the servo motor 21, the sliding block moves on the screw 22 towards the accompanying plating piece 9 at a uniform speed (refer to 1 cm/s) and automatically stops moving after reaching 2.5 cm. Wherein, the movement stroke is mainly determined according to the relative positions of the connecting piece 3 and the accompanying plating piece.

At the same time of starting the servo motor 21, the CCD camera 8 is started by a Programmable Logic Controller (PLC) of the equipment operation panel 6, the part of the accompanying plating sheet 9 exposed out of the bench vice 4 is aligned, the recording of the image of the bending position of the accompanying plating sheet 9 exposed out of the bench vice 4 in the bending process is automatically started, and until the servo motor 21 stops moving, the CCD camera 8 stops recording. The magnification of the CCD camera 8 is 50-500 times, so that the microscopic morphology change of the bending part of the accompanying plating sheet can be recorded and the image data can be saved.

The pressure sensor 7 records the pressure received by the part of the accompanying plating sheet 9 exposed out of the bench vice 4 in the bending process and transmits the pressure to a Programmable Logic Controller (PLC) of the equipment operation panel 6 through signals, the Programmable Logic Controller (PLC) outputs the pressure value sensed by the pressure sensor 7 along with time, and the pressure value output by the Programmable Logic Controller (PLC) is manually drawn into a pressure-time curve chart on a display of the equipment operation panel 6.

After the servo motor 21 is moved by 2.5cm, the servo motor 21 is started to enable the screw 22 to reversely rotate to drive the sliding block to be away from the accompanying plating piece 9, so that the first baffle 31 is driven to be away from the accompanying plating piece 9, and the first baffle 31 does not apply pressure to the part of the accompanying plating piece 9, which is exposed out of the bench vice 4. The part of the accompanying plating sheet 9 exposed out of the bench vice 4 recovers part deformation under the condition of no pressure, and after the accompanying plating sheet 9 is not changed any more, the angle value on the angle scale corresponding to the part of the accompanying plating sheet 9 exposed out of the bench vice 4 at the moment is directly read out from the angle scale 5, and the absolute value of the difference value between the angle value and 180 degrees is the bending angle of the accompanying plating sheet 9.

Fig. 6 is a graph of pressure versus time during bending of a co-plated sheet according to an embodiment of the present utility model. Referring to fig. 6, in fig. 6, the ordinate of F1 is smaller than F2, F2 is smaller than F3, and F1, F2 and F3 correspond to different pressure values, and point a on the pressure-time graph is the pressure value received by the co-plating sheet at the moment of breaking failure of the thin film coating on the co-plating sheet, and is the failure critical point of the thin film coating on the co-plating sheet.

According to the testing device disclosed by the utility model, the co-plating sheets with the same specification and the same thickness and different types of film coatings can be bent, the pressure-time curve graph of the co-plating sheets with the same specification and the same thickness and different types of film coatings in the bending process can be drawn, the failure critical points of the different types of film coatings in breaking failure can be compared, and the bending strength of the different types of film coatings can be judged by qualitative analysis, so that the hardness of the different types of film coatings can be indirectly judged because the hardness values of materials and the bending strength values have approximate corresponding relations.

Meanwhile, the microscopic morphology change of the broken position of the film coating of different types recorded by the CCD camera is combined, the falling-off area of the film coating of different types at the broken position is compared, the size of the binding force between the film coating of different types and the substrate of the accompanying plating sheet is judged through qualitative analysis, and guidance significance is provided for the selection of the film coating types in the film plating process.

The testing device can also compare the falling areas of the film coatings with different thicknesses at the breaking positions by bending the co-plating sheets with the same specification and the same film coatings with different thicknesses and combining the microscopic morphology changes of the breaking positions of the film coatings with the same thickness recorded by a CCD camera, and can provide guidance significance for the thickness selection of the film coatings in the film plating process by qualitatively analyzing and judging the binding force between the film coatings with different thicknesses and the base materials of the co-plating sheets.

While embodiments of the present utility model have been described in detail hereinabove, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. It is to be understood that such modifications and variations are within the scope and spirit of the present utility model as set forth in the following claims. Moreover, the utility model described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims (10)

1. A testing device is characterized by comprising a clamping unit, a force applying unit, a driving unit, a display unit and a pressure sensing unit,

The driving unit is connected with the force application unit and drives the force application unit to do horizontal linear motion;

The clamping unit is used for clamping a co-plating sheet with a film coating on the surface, and the part of the co-plating sheet, which is exposed out of the clamping unit, is positioned on the movement path of the force application unit;

The pressure sensing unit is fixed on the force application unit, and the display unit is in signal connection with the pressure sensing unit;

After the driving unit is started, the driving unit drives the force application unit to approach the accompanying plating sheet, and makes one side of the force application unit away from the pressure sensing unit apply pressure to the accompanying plating sheet, so that the accompanying plating sheet bends towards the direction away from the force application unit until the driving unit stops moving, and the pressure sensing unit outputs the stress of the accompanying plating sheet in the bending process and transmits the stress to the display unit.

2. The test device according to claim 1, wherein the force applying unit includes a first shutter, a second shutter, and a connecting member connecting the second shutter to the driving unit, an elastic connecting member is provided between the first shutter and the second shutter, one end of the elastic connecting member is connected to the first shutter, and the other end of the elastic connecting member is connected to a side of the second shutter facing the first shutter so that a gap is formed between the first shutter and the second shutter;

The pressure sensing unit is positioned in the gap and connected with the first baffle plate and the second baffle plate;

The driving unit drives the second baffle to do linear motion, so that the second baffle drives the first baffle to be close to the accompanying plating piece, and the first baffle applies pressure to the accompanying plating piece.

3. The testing device according to claim 2, wherein a plurality of sliding rollers are disposed on a side of the first baffle facing the accompanying sheet, the sliding rollers are sequentially disposed on the first baffle in parallel, and axes of the sliding rollers are parallel to each other and are parallel to a crease direction generated by the accompanying sheet during bending, so as to reduce resistance between the accompanying sheet and the first baffle during bending.

4. The testing device according to claim 2, wherein the driving unit comprises a driving member, a screw rod, a sliding block and a sliding rail, the screw rod is connected with the driving member, the sliding block is movably sleeved on the screw rod, the sliding block is fixedly connected with the connecting member, and the connecting member is slidably connected with the sliding rail;

The driving piece drives the screw to rotate, so that the screw drives the sliding block to do linear motion along the axis of the screw, and further the sliding block drives the connecting piece to do linear motion on the sliding rail.

5. The test device of claim 4, wherein the connector is provided with a sliding portion that contacts the slide rail to reduce resistance of the connector to movement on the slide rail.

6. The test device of claim 1, wherein the clamping unit comprises a base, a fastener, a first clamping tooth and a second clamping tooth, the fastener is arranged in the base in a penetrating way to form a threaded rotation fit, the first clamping tooth is fixed on the base, and the second clamping tooth is fixed on one side of the fastener close to the first clamping tooth; a gap exists between one side, away from the fastener, of the second clamping tooth and the first clamping tooth, the accompanying plating sheet is positioned in the gap, and the second clamping tooth is driven to be close to the first clamping tooth by rotating the fastener, so that the gap is reduced, and the accompanying plating sheet is fixed;

the first clamping teeth are provided with grooves, and the grooves are used for placing the accompanying plating sheets so as to fix the clamping positions of the accompanying plating sheets.

7. The testing device of claim 1, further comprising an image recording unit, wherein the image recording unit is disposed on a side of the clamping unit away from the force applying unit, and is configured to record an image of a bending position of the co-plating sheet during bending.

8. The test device of claim 7, wherein the image recording unit comprises a CCD camera.

9. The testing device of claim 6, further comprising an angle measuring unit fixed on the first clamping tooth for measuring a bending angle of the co-plating piece, wherein a plurality of angle graduation lines from 0 degrees to 180 degrees are uniformly distributed on the angle measuring unit;

When bending does not occur, the clamped part of the side edge of the accompanying plating sheet and the part of the side edge of the accompanying plating sheet, which is exposed out of the first clamping tooth, are positioned on the same straight line, the clamped part of the side edge of the accompanying plating sheet and the 0-degree scale mark of the angle measuring unit are parallel to each other, the part of the side edge of the accompanying plating sheet, which is exposed out of the first clamping tooth, and the 180-degree scale mark of the angle measuring unit are parallel to each other, and the angle measuring unit displays that the initial angle of the accompanying plating sheet is 180 degrees;

In the bending process, the crease produced by the accompanying plating sheet is perpendicular to the center point of the angle measuring unit, the clamped part of the side edge of the accompanying plating sheet is always parallel to the 0-degree scale mark of the angle measuring unit, after the driving unit stops moving, the side edge of the accompanying plating sheet is exposed out of the part of the first clamping tooth and a certain angle scale mark, which is positioned between the 0-degree scale mark and the 180-degree scale mark, of the angle measuring unit is parallel to each other, and at the moment, the angle difference value between the 180-degree scale mark and the certain angle scale mark is the bending angle of the accompanying plating sheet.

10. The test device of claim 1, wherein the pressure sensing unit is a pressure sensor.