A tensile testing machine

Abstract

The utility model discloses a drawing testing machine, including the upper joint and lower joint of opposite setting and set up in the calibration structure between upper joint and lower joint, calibration structure includes a plurality of calibration parts, sets up respectively in the surface of upper joint and lower joint, and is provided with the calibration pole between the calibration part of upper joint and lower joint, in the process of calibrating upper joint and lower joint, through respectively inserting the both ends of calibration pole into the calibration part of upper joint and lower joint, makes upper joint and lower joint keep consistent in front -back direction. The utility model discloses simple structure, through the setting of calibration part and calibration pole, solve the inclination problem of upper and lower joint in front -back position, such design can guarantee that upper and lower joint are in the same direction of front -back dimension, prepare for the stretching operation of subsequent placement sample, also guarantee the accuracy of experimental data.

Description

Technical Field

[0001] This utility model relates to the technical field of sheet coating pull-out strength testing equipment, specifically a pull-out testing machine. Background Technology

[0002] In the field of materials surface engineering, solid lubricant coating technology is widely used to improve the wear resistance and corrosion resistance of material surfaces, thereby extending their service life. To evaluate the bonding strength between such coatings and the substrate, a universal testing machine is typically used to perform a pull-off test. During this test, the installation accuracy of the specimen directly affects the accuracy of the experimental results.

[0003] Currently, commonly used universal testing machines employ wedge clamps to connect the upper and lower clamping blocks to the upper and lower connectors, and center the specimen by adjusting the position of the fixing pins. However, in actual operation, the upper and lower connectors are prone to tilting in the front-to-back direction during clamping, making it difficult to ensure that they are both perpendicular to the ground and in the same vertical plane. This installation deviation will cause the specimen to not be placed vertically, resulting in uneven stress during tensile testing, affecting the authenticity and repeatability of the test data, and hindering the accurate assessment of the film-substrate bond strength. Therefore, a pull-out testing machine is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a pull-out testing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pull-out testing machine, comprising an upper connector and a lower connector arranged opposite to each other, and a calibration structure disposed between the upper connector and the lower connector;

[0006] The calibration structure includes several calibration components, which are respectively disposed on the surfaces of the upper connector and the lower connector. A calibration rod is disposed between the calibration components of the upper connector and the lower connector. During the calibration of the upper connector and the lower connector, the two ends of the calibration rod are inserted into the calibration components of the upper connector and the lower connector respectively, so that the upper connector and the lower connector are aligned in the front-to-back direction.

[0007] As a further embodiment of this utility model: the calibration element is a calibration hole, and the inner diameter of the calibration hole is adapted to the outer diameter of the end of the calibration rod.

[0008] As a further embodiment of this utility model: the calibration component is a limiting sleeve, which is fixedly connected to both the upper and lower connectors, and the limiting sleeve has a hole that matches the end of the calibration rod.

[0009] As a further embodiment of this utility model, it further includes a workbench and a crossbeam disposed above the workbench, wherein the workbench and the crossbeam are connected by a number of side columns.

[0010] As a further embodiment of this utility model: wedge-shaped clamps are provided on the end faces of the workbench and the crossbeam respectively, and the two wedge-shaped clamps are connected to the workbench and the crossbeam respectively through the first column and the second column.

[0011] As a further embodiment of this utility model: the wedge clamp has a limiting groove, and two wedge clamping blocks are provided inside the limiting groove. The wedge clamp is equipped with a handle that can adjust the opening angle of the two wedge clamping blocks.

[0012] As a further embodiment of this utility model: both of the wedge-shaped clamps are equipped with adjustment structures, which are used to adjust the left and right positions of the upper connector and / or the lower connector, respectively.

[0013] As a further embodiment of this utility model: the adjustment structure includes a metal rod, one end of which is located between the two wedge-shaped clamps, and the other end of which is inserted into the interior of the lower connector. The lower connector is provided with a fixing pin, and the end of the fixing pin passes through the lower connector and the metal rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This application solves the problem of tilting of the upper and lower joints in the front and back positions by setting up calibration parts and calibration rods. This design can ensure that the upper and lower joints are in the same direction in the front and back dimensions, which prepares for the subsequent placement of the sample for tensile operation and also ensures the accuracy of experimental data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pull-out testing machine of this utility model;

[0017] Figure 2 This is a schematic diagram of the wedge-shaped clamp of this utility model;

[0018] Figure 3 This is a schematic diagram of the calibration component of this utility model;

[0019] Figure 4 This is a schematic diagram of another embodiment of the calibration component of this utility model;

[0020] Figure 5 This is a schematic diagram of the calibration rod of this utility model;

[0021] Figure 6 This is a schematic diagram of the combination of the limiting block and the wedge-shaped clamping block of this utility model;

[0022] Figure 7 This is a schematic diagram of the combination of the handle and the T-block of this utility model;

[0023] In the diagram: 1. Workbench; 2. Crossbeam; 3. Side column; 4. First column; 5. Second column; 6. Wedge clamp; 7. Upper connector; 8. Lower connector; 9. Limiting groove; 10. Limiting block; 11. Wedge clamp; 12. T-block; 13. Handle; 14. Metal rod; 15. Fixing pin; 16. Calibration structure; 161. Calibration hole; 162. Limiting sleeve; 163. Calibration rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7 In this embodiment of the present invention, a pull-out testing machine includes an upper connector 7 and a lower connector 8 disposed opposite to each other, and a calibration structure 16 disposed between the upper connector 7 and the lower connector 8.

[0026] The calibration structure 16 includes several calibration components, which are respectively disposed on the surfaces of the upper connector 7 and the lower connector 8. A calibration rod 163 is disposed between the calibration components of the upper connector 7 and the lower connector 8. During the calibration process of the upper connector 7 and the lower connector 8, the two ends of the calibration rod 163 are inserted into the calibration components of the upper connector 7 and the lower connector 8 respectively, so that the upper connector 7 and the lower connector 8 are consistent in the front-back direction.

[0027] Please see Figure 3 and Figure 5 In one embodiment, preferably, the calibration element is a calibration hole 161, the inner diameter of which is adapted to the outer diameter of the end of the calibration rod 163. In this way, when the calibration rod 163 is inserted into the calibration hole 161, the upper connector 7 and the lower connector 8 can be kept consistent in the front-to-back direction, thereby ensuring that the tensile force exerted on the plate by the drawing equipment is uniform.

[0028] Please see Figure 4 and Figure 5 In another embodiment, preferably, the calibration component is a limiting sleeve 162. The limiting sleeve 162 is fixedly connected to both the upper connector 7 and the lower connector 8. The limiting sleeve 162 has a hole that matches the end of the calibration rod 163. With this design, when the calibration rod 163 is inserted into the hole, the upper connector 7 and the lower connector 8 can be kept consistent in the front-back direction, thereby ensuring that the tensile force exerted on the plate by the pulling device is uniform.

[0029] Please see Figure 1-2 In one embodiment, preferably, it further includes a workbench 1 and a crossbeam 2 disposed above the workbench 1. The workbench 1 and the crossbeam 2 are connected by a plurality of side columns 3. Wedge-shaped clamps 6 are provided on the adjacent end faces of the workbench 1 and the crossbeam 2. Two wedge-shaped clamps 6 are respectively connected to the workbench 1 and the crossbeam 2 through a first column 4 and a second column 5. The first column 4 and the second column 5 are fixedly connected to the wedge-shaped clamps 6, wherein the first column 4 is fixedly connected to the workbench 1, while the second column 5 is movably connected to the crossbeam 2. The crossbeam 2 is provided with a driving device for driving the second column 5 to move up and down relative to the crossbeam 2. The switch of the driving device is disposed on the side column 3 (not shown in the figure). The specific structure and working principle of the driving device are prior art and will not be described in detail here.

[0030] Please see Figure 2-7 In one embodiment, preferably, the wedge clamp 6 has a limiting groove 9, and two wedge clamps 11 are provided inside the limiting groove 9. The wedge clamp 6 is equipped with a handle 13 that can adjust the opening angle of the two wedge clamps 11.

[0031] Specifically, the wedge clamp 6 has a placement groove that communicates with the limiting groove 9. The end of the handle 13 is inserted into the placement groove and rotatably connected to it. The adjacent end faces of the two wedge clamps 11 are each provided with a slot. A T-shaped block 12 is provided between them. The T-shaped block 12 is inserted into the slot and has a toothed structure at its lower end, which meshes with the toothed end of the handle 13 inserted into the placement groove. Due to the limiting effect of the two wedge clamps 11 on the T-shaped block 12, the T-shaped block 12 can only move in the up and down direction. The two side walls of the limiting groove 9 gradually contract inward from bottom to top, and the inclined surfaces of the non-adjacent ends of the two wedge clamps 11 are consistent with the slope of the side walls. The wedge clamp 6 is equipped with multiple limiting blocks 10, and the multiple limiting blocks 10 are in contact with the surfaces of the two wedge clamps 11 respectively. With the cooperation of the multiple limiting blocks 10, the movement direction of the wedge clamps 11 can be restricted.

[0032] Therefore, by pulling the handle 13 up and down, the toothed end of the handle 13 can drive the T-block 12 to move upward or downward. When the handle 13 is lifted, the toothed end of the handle 13 drives the toothed groove structure of the T-block 12 to move. At this time, the T-block 12 moves downward. When the T-block 12 drives the two wedge-shaped clamps 11 to move downward synchronously, the wedge-shaped clamps 11 expand outward along the side wall of the limiting groove 9, and the distance between them increases. Conversely, when the wedge-shaped clamps 11 move upward synchronously with the T-block 12, the distance between them decreases under the action of the inclined plane. This achieves the control of the opening angle of the two wedge-shaped clamps 11, and achieves the purpose of clamping or releasing the metal rod 14.

[0033] Please see Figure 2In one embodiment, preferably, both wedge clamps 6 are equipped with adjustment structures for adjusting the left and right positions of the upper connector 7 and / or the lower connector 8, respectively. The adjustment structure includes a metal rod 14, one end of which is located between the two wedge clamps 11, and the other end of which is inserted into the interior of the lower connector 8. The lower connector 8 is provided with a fixing pin 15, the end of which passes through the lower connector 8 and the metal rod 14.

[0034] Both the metal rod 14 and the lower connector 8 have through holes with the same inner diameter, which are adapted to the outer diameter of the fixing pin 15. When the fixing pin 15 is inserted into the through hole, the positions of the lower connector 8 and the metal rod 14 can be fixed. When it is necessary to adjust the left and right position of the lower connector 8, an external force can be applied to the lower connector 8 to move it relative to the metal rod 14, thereby changing the relative position between the two.

[0035] Working principle and usage process of this utility model:

[0036] Before the experiment begins, the wedge-shaped clamp 11 is placed in the limiting groove 9 of the wedge-shaped clamp 6, and the limiting block 10 is fixed to the wedge-shaped clamp 6 with screws to limit the wedge-shaped clamp 11. Then, the handle 13 is pulled up and down, causing the toothed end of the handle 13 to drive the T-shaped block 12 to move up and down synchronously, thereby controlling the opening angle of the two wedge-shaped clamps 11. Next, the metal rod 14 is placed on the support of the two wedge-shaped clamps 11, and the handle 13 is pressed down to fix the position of the metal rod 14. Then, the metal rod 14 is connected to the lower connector 8 by the fixing pin 15. The upper connector 7 is operated in the same way. After all connections are completed, the upper and lower connectors are... External force is applied to the head to position it appropriately on the left and right. The ends of the calibration rods 163 are inserted into the calibration parts of the upper and lower connectors respectively. By operating multiple calibration rods 163 in this way, the tilt of the upper and lower connectors in the front and back positions can be adjusted to ensure that the upper and lower connectors are in the same straight line in the vertical direction. After calibration, the calibration rods 163 are gently removed, and the pre-treated sample is placed in the groove of the upper and lower connectors. At this time, the upper and lower connectors and the sample are in the same straight line in the vertical direction, and the subsequent coating stretching operation can be performed. During the stretching process, the second column 5 is moved upward by the drive device, which increases the distance between the upper and lower connectors and achieves the effect of stretching the sample.

[0037] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0038] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A pull-out testing machine, characterized in that, Includes an upper connector and a lower connector that are positioned opposite each other, and a calibration structure disposed between the upper connector and the lower connector; The calibration structure includes several calibration components, which are respectively disposed on the surfaces of the upper connector and the lower connector. A calibration rod is disposed between the calibration components of the upper connector and the lower connector. During the calibration of the upper connector and the lower connector, the two ends of the calibration rod are inserted into the calibration components of the upper connector and the lower connector respectively, so that the upper connector and the lower connector are aligned in the front-to-back direction.

2. The pull-out testing machine according to claim 1, characterized in that, The calibration component is a calibration hole, the inner diameter of which is adapted to the outer diameter of the end of the calibration rod.

3. The pull-out testing machine according to claim 1, characterized in that, The calibration component is a limiting sleeve, which is fixedly connected to both the upper and lower connectors. The limiting sleeve has a hole that matches the end of the calibration rod.

4. The pull-out testing machine according to any one of claims 2-3, characterized in that, It further includes a workbench and a crossbeam disposed above the workbench, the workbench and the crossbeam being connected by a number of side columns.

5. The pull-out testing machine according to claim 4, characterized in that, The workbench and the crossbeam are each provided with a wedge-shaped clamp on their adjacent end faces. The two wedge-shaped clamps are connected to the workbench and the crossbeam respectively through the first column and the second column.

6. The pull-out testing machine according to claim 5, characterized in that, The wedge clamp has a limiting groove, and two wedge-shaped clamping blocks are provided inside the limiting groove. The wedge clamp is equipped with a handle that can adjust the opening angle of the two wedge-shaped clamping blocks.

7. The pull-out testing machine according to claim 6, characterized in that, Both wedge clamps are equipped with adjustment structures, which are used to adjust the left and right positions of the upper and / or lower connectors, respectively.

8. The pull-out testing machine according to claim 7, characterized in that, The adjustment structure includes a metal rod, one end of which is located between the two wedge-shaped clamps. The other end of the metal rod is inserted into the interior of the lower connector. The lower connector is provided with a fixing pin, the end of which passes through the lower connector and the metal rod.

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