System for testing tungsten carbide impact resistance of glass

Abstract

The invention relates to the field of glass performance testing, in particular to the field of glass safety performance testing, and more particularly relates to a glass carbide impact resistance testing system, the position of a tungsten carbide impact head is adjusted through the X axis and the Z axis of an X, Y and Z three-axis moving lifting mechanism, so that the tungsten carbide impact head meets the requirement of the impact position, and then the impact position is adjusted through the Y axis and the Z axis. Up-down movement of the tungsten carbide impact head is achieved, and then impact is simulated. Due to the fact that movement of the Y axis can be controlled by a PLC and other control structures, force controllability can be achieved. It is particularly concerned that after impact, fragment counting can be further achieved through cooperation of a picture collector and a glass cover (needing to be manually placed), and then glass safety testing is completed.

Description

Technical Field

[0001] This invention relates to the field of glass performance testing, particularly to the field of glass safety performance testing, and more specifically to a glass carbide impact resistance testing system. Background Technology

[0002] To ensure the safety of glass components used in appliances such as refrigerators, mechanical strength tests are mandatory. Tungsten carbide impact testing is a method that uses a tungsten carbide impact head as a testing tool specifically designed to test and ensure the mechanical strength of refrigerator glass panels.

[0003] In the tungsten carbide impact test, the glass to be tested is first placed on a rigid horizontal surface. Then, a conical tungsten carbide impact head, weighing 75±5g and with a tip angle of 60°±2°, is placed approximately 13mm from the midpoint of the longest edge of the glass. The experimenter then strikes the impact head with a hammer. After the glass shatters, a 50mm×50mm transparent cover is placed on the broken glass, positioned 25mm from the outer edge of the sample. The number of fragments inside the transparent cover is counted to determine the mechanical strength of the glass.

[0004] However, the inventors of this invention have noticed that this testing method relies excessively on the personal experience of the experimenter. Each experimenter strikes with different force, resulting in different glass fragments, which leads to inconsistent test results. Furthermore, the angle of the hammer during striking, held in one hand with a hammer and the other with a tungsten carbide impact head, also affects the direction and extent of glass sample breakage, thus impacting the accuracy of the experiment. Summary of the Invention

[0005] In response to the aforementioned newly discovered problems, the inventors of this invention sought to find a solution that could reduce the impact of human factors on experimental results in the testing project, ensure the uniformity and standardization of the testing process, improve the accuracy of the testing results, and reduce the deviation of testing results caused by human intervention.

[0006] Based on this, the inventors of this invention have creatively proposed a glass tungsten carbide impact resistance testing system that can automate the testing process.

[0007] The glass tungsten carbide impact resistance testing system disclosed in this invention includes: a test plane for placing the sample to be tested; a fixed base with a mounting through hole, in which a hammer rod is installed, and the bottom end of the hammer rod is fixedly connected to a tungsten carbide impact head; an image acquisition device is installed on the lower surface of the fixed base; and an X, Y, Z three-axis moving and lifting mechanism, in which a movable seat that can move along the X, Y, Z axes is provided, and the fixed base is fixed to the movable seat in the X, Y, Z three-axis moving and lifting mechanism.

[0008] In one specific implementation, the X, Y, and Z three-axis moving and lifting mechanism includes a frame and X-axis lead screw and X-axis lead screw motor, Y-axis lead screw and Y-axis lead screw motor, and Z-axis lead screw and Z-axis lead screw motor. The frame includes two parallel support bases, with a crossbeam spanning the upper ends of the two parallel support bases. The moving base is slidably engaged with the crossbeam, and an X-axis slide rail is formed on the crossbeam. The crossbeam is installed in the Y-axis slide rail along the Y-axis direction. The lower ends of the two support bases are respectively engaged in the two parallel Z-axis slide rails along the Z-axis direction.

[0009] In this invention, the X-axis and Y-axis form a vertical plane, and the X-axis and Z-axis form a horizontal plane. The test plane is parallel to the horizontal plane formed by the X-axis and Z-axis and is located below this horizontal plane.

[0010] In one specific implementation, the image acquisition device is an industrial camera. Industrial cameras are video image acquisition devices used in industrial settings, capable of directly storing images on a hard drive. Compared to ordinary cameras, industrial cameras offer significant advantages in resolution, frame rate accuracy, lighting adaptability, and exposure control, making them more suitable for image acquisition in industrial environments.

[0011] In one specific implementation, a computer host connected to the industrial camera is also included.

[0012] One specific technical solution also includes a timer. According to standard requirements, it is necessary to count the fragments generated within 5 minutes after the impact. Therefore, the timer automatically starts after the impact and sounds an alarm when 5 minutes have elapsed to ensure the accuracy of the statistical data.

[0013] When connected to a computer host, the timer can be implemented on the computer host.

[0014] In one specific implementation scheme, multiple image capture devices are configured to form an image capture module. Specifically, when four image capture devices are configured, these four devices are fixed to four points on the lower surface of the mounting base, located at the four vertices of a rectangle.

[0015] In one specific technical solution, the test surface is an anti-static experimental table.

[0016] In one specific technical solution, a support structure is also provided below the antistatic experimental table.

[0017] In one specific implementation, the bottom of the support structure is provided with lockable casters.

[0018] In this way, the entire testing system can be moved and transported, making testing more convenient.

[0019] As a specific implementation of the technical solution, a test area is also provided on the test plane, and the test plane at the test area can be opened.

[0020] Furthermore, this opening method utilizes a hinge. That is, when the hinge is locked, the test plane in the test area is seamlessly connected to other parts; when the hinge is opened, the test plane in the test area flips downwards around the hinge axis, and the sample to be tested falls off the test plane.

[0021] This invention utilizes a three-axis (X, Y, Z) lifting mechanism to adjust the position of the tungsten carbide impact head along the X and Z axes, ensuring it meets impact requirements. The Y-axis is then used to move the impact head up and down, simulating an impact. Since the Y-axis movement can be controlled by a PLC or similar control structure, the force can be controlled. Of particular interest is the ability to further count fragments after the impact using an image acquisition device in conjunction with a glass cover (which requires manual placement), thus completing a glass safety test. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. Example 1

[0024] like Figure 1 The glass tungsten carbide impact resistance testing system shown includes: a test plane, which is used to place the sample to be tested; in this embodiment, the test plane is an anti-static test table 1, and the glass sample 2 to be tested is placed on the anti-static test table.

[0025] like Figure 1 As shown, it includes a fixed base 3, which has an installation through hole. A hammer rod 4 is installed in the installation through hole, and the bottom end of the hammer rod is fixedly connected to a tungsten carbide impact head 5.

[0026] Combination Figure 1 As you can see, the tungsten carbide impact head 5 is positioned above the glass sample 2 to be tested. The position of the tungsten carbide impact head 5 is adjusted by a three-axis (X, Y, Z) moving and lifting mechanism. Figure 1 As shown, the position of the tungsten carbide impact head 5 is determined by the fixed seat that fixes it. The rear end of the fixed seat 3 is fixed on the movable seat 6, which is a component of the X, Y, Z three-axis moving lifting mechanism. It has the ability to move along the X, Y, Z three axes.

[0027] Specifically, in combination Figure 1 As can be seen, the X, Y, Z three-axis moving and lifting mechanism includes a frame and an X-axis lead screw 7 and an X-axis lead screw motor 8, a Y-axis lead screw 9 and a Y-axis lead screw motor 10, and a Z-axis lead screw 11 and a Z-axis lead screw motor 12. The frame includes two parallel support bases 13, with a crossbeam 14 spanning the upper ends of the two parallel support bases. The movable seat 6 is slidably engaged with the crossbeam 14, and an X-axis slide rail (not shown from the opposite direction) is formed on the crossbeam 14. The crossbeam 14 is installed in the Y-axis slide rail 15 along the Y-axis direction. The lower ends 1301 of the two support bases are respectively engaged and installed in the two parallel Z-axis slide rails 16 along the Z-axis direction.

[0028] The movable seat 6 can move along the three slide rails: the X-axis slide rail 15, the Y-axis slide rail 16, and the Z-axis slide rail 16, thereby moving in the X and Y vertical planes and the X and Z horizontal planes, which in turn drives the fixed seat to move, thus realizing the movement of the tungsten carbide impact head.

[0029] like Figure 1 As shown, an image acquisition device 17 is installed on the lower surface of the mounting base 3; in this embodiment, four image acquisition devices are installed to form an image acquisition module. It can be seen that the mounting base 3 is rectangular, and the four image acquisition devices are located at the four apex corners of this rectangle.

[0030] In this embodiment, an industrial camera is used as the image acquisition device. For example... Figure 1 As shown, it also includes a computer host 18 connected to the industrial camera.

[0031] Furthermore, it can be seen that a support structure 19 is also provided below the anti-static experimental table 1 described in this embodiment, and a lockable caster wheel 20 is provided at the bottom of the support structure.

[0032] In this way, the entire testing system can be moved and transported, making testing more convenient.

[0033] Below, we will describe the operation process of the present invention in conjunction with the above structure: 1. Manually place the sample to be tested, i.e., the glass panel, on the anti-static test table 1. The anti-static test table can be a steel plate table. In specific operation, a fixed rubber pad can be placed under the glass panel to ensure that the glass panel is stable and fixed and will not slip during the experiment. 2. The industrial camera's scanning lens scans the glass panel and records its dimensions via its built-in system. This data is then fed back to the computer, which generates movement commands for the X, Y, and Z-axis moving lifting mechanism. These commands move the movable seat to approximately 13mm from the midpoint of the longest edge of the glass. At this point, the movable seat drives the fixed seat, causing the conical tungsten carbide impact head to automatically move to that position. This control procedure is a mature technology and will not be elaborated upon further.

[0034] Once the tungsten carbide impact head is in place, the Y-axis lead screw motor starts, still using the moving seat to drive the fixed seat, and further driving the tungsten carbide impact head to achieve vertical downward movement, thus generating a hammer blow to shatter the glass. The timer automatically starts timing and lifts up. 3. Manually place a 50mm*50mm transparent cover downwards, 25mm away from the outer edge of the sample, to cover the broken glass panel. It is generally believed that the time for manually placing the transparent cover is usually only a few seconds and will not affect the overall time. For the entire test, this time can be ignored. 4. At the 2-minute mark, use the scanning lenses of the industrial camera, especially the four scanning lenses in the industrial camera module integrated in this example, to scan and count the crack-free fragments within the area covered by the transparent cover. The number of fragments is then displayed on the computer screen (each fragment completely contained within the transparent cover is counted as one fragment, and fragments only partially within the transparent cover are counted as half a fragment). 5. Manually repeat the process of covering the previously uncovered portion of the shattered glass panel with a 50mm*50mm transparent cover facing down and 25mm away from the outer edge of the sample. Then, scan and count the glass fragments inside the covered transparent cover using the method described in step 4 and display the number of fragments. Repeat this process until all fragments have been counted; 6. If the timer has not reached 5 minutes, the counting will proceed smoothly. If the timer has exceeded 5 minutes, the count will be displayed, and a warning message will be displayed indicating that the time has exceeded 5 minutes (the standard requires that the glass crack be generated within 5 minutes, so the test can be set to be valid if it is completed within 5 minutes).

[0035] 7. After completing the test, open the rear hinged door 21 of the steel plate desktop test area, causing the steel plate desktop at the glass panel to be tested to flip downwards, and the broken glass will fall into the trash can below the door opening.

Claims

1. A glass tungsten carbide impact resistance testing system, characterized in that, include: The test plane is used to place the sample to be tested. A fixed base has a mounting through hole, in which a hammer rod is installed. The bottom end of the hammer rod is fixedly connected to a tungsten carbide impact head. An image acquisition device is mounted on the lower surface of the fixed base. The test plane also includes an X, Y, and Z-axis moving and lifting mechanism. This mechanism includes a movable seat that can move along the X, Y, and Z axes. The fixed base is fixed to the movable seat in the X, Y, and Z-axis moving and lifting mechanism. The horizontal plane formed by the X and Z axes lies on the test plane.

2. The glass tungsten carbide impact resistance testing system according to claim 1, characterized in that, The image capture device is an industrial camera.

3. The glass tungsten carbide impact resistance testing system according to claim 2, characterized in that, It also includes a computer host that is connected to industrial cameras.

4. The glass tungsten carbide impact resistance testing system according to claim 1, characterized in that, It also includes a timer.

5. The glass tungsten carbide impact resistance testing system according to claim 1, characterized in that, Multiple image collectors are set up to form an image acquisition module.

6. The glass tungsten carbide impact resistance testing system according to claim 5, characterized in that, When four image capture devices are set up, these four image capture devices are fixed at four points on the lower surface of the mounting base, and these four points are located at the four vertices of a rectangle.

7. The glass tungsten carbide impact resistance testing system according to claim 1, characterized in that, The test surface is an anti-static experimental table.

8. The glass tungsten carbide impact resistance testing system according to claim 7, characterized in that, The anti-static experimental table is also equipped with a support structure underneath.

9. The glass tungsten carbide impact resistance testing system according to claim 1, characterized in that, The bottom of the support structure is equipped with lockable casters.

10. The glass tungsten carbide impact resistance testing system according to claim 1, characterized in that, The test plane also has a test area, and the test plane at the test area can be opened, specifically, in a hinged opening manner.

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