Plate impact resistance detection device and detection method thereof

Abstract

The invention discloses a plate impact resistance detection device and a detection method thereof.A supporting device used for supporting a plate is arranged on a base, the supporting device comprises a plurality of supporting pieces, the supporting pieces can be lifted up and down so that different angles can be formed between the plate supported by the supporting pieces and the base, and a drop hammer device is arranged on the base and used for detecting the impact resistance of the plate. The drop hammer device is arranged on the base through the supporting frame and located above the supporting device. The invention provides a plate impact resistance detection device and a detection method thereof, which can enable a plate to be subjected to an impact resistance test at different angles and automatically identify the height change of an impact point at the same time so as to change the acceleration force of a hammering ball, so that the speed of hammering the plate by the hammering ball is kept consistent, and the detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plate impact resistance detection, and in particular to a plate impact resistance detection device and a detection method thereof. BACKGROUND

[0002] In the fields of construction, transportation, packaging and many industries, the impact resistance of the plate is a key indicator to measure its quality and safety. With the rapid development of modern building technology, the plate may face impact loads from different angles in practical application, such as the inclined impact of the building exterior wall under the action of wind, collision, or non-vertical impact caused by inclined placement during transportation. Therefore, comprehensively evaluating the impact resistance of the plate at different angles is of great significance to product quality control and safety design.

[0003] At present, the mainstream plate impact resistance detection device on the market adopts the drop hammer impact test method, such as the patent technology shown in the publication number CN219641477U, which can only realize single-angle impact test perpendicular to the surface of the plate. The device controls the free falling of the hammer body to vertically impact the surface of the plate, simulating the vertical impact working condition. However, this test method has obvious limitations and cannot simulate the inclined impact scenarios that the plate may encounter in practical application. SUMMARY

[0004] The present application provides a plate impact resistance detection device and a detection method thereof to solve the problems in the prior art. The present application supports the plate by setting multiple points and the support pieces can be lifted, so that the plate and the chassis present different angle relationships, thereby simulating the inclined impact scenarios that the plate may encounter in practical application.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a plate impact resistance detection device, a support device is arranged on the base to support the plate, the support device includes multiple support pieces, and the support pieces can be lifted up and down to present different angles between the plate supported thereby and the base, a drop hammer device is arranged on the base through a support frame and located above the support device, an electromagnetic acceleration channel and a sensing device for identifying the height of the plate hammering point are arranged on the drop hammer device, the electromagnetic acceleration channel is used to accelerate the hammering ball electromagnetically to control the speed of the hammering ball when it hits the plate.

[0006] The beneficial effects are that the support device presents different angles between the plate and the base, and when the drop hammer device drops the hammer, it can simulate impact working conditions at different angles, thereby improving the comprehensiveness of the detection and making the detection results closer to the actual application scenarios.

[0007] In the above scheme, preferably, the falling hammer device further includes a ball dispensing device and a ball storage container for storing the hammered balls. The ball dispensing device includes a guide box with one end connected to the upper end of the electromagnetic acceleration channel and the other end connected to the lower end of the ball storage container, and a turntable rotatably disposed in the guide box. The turntable is provided with a groove for accommodating a single hammered ball, and the turntable rotates to move the single hammered ball from the ball storage container to the upper end of the electromagnetic acceleration channel.

[0008] In the above scheme, preferably, the turntable is evenly provided with multiple grooves on its circumference, each groove can only accommodate a single hammer ball, and a servo motor is connected to the turntable to drive its precise rotation.

[0009] In the above scheme, preferably, the support device further includes a first slide rail group fixedly configured on the base and a second slide rail group perpendicular to the first slide rail group. The second slide rail group includes a third rail and a fourth rail. The third rail is configured on the slider of the first slide rail group, and the fourth rail is configured on the base so that the third rail can move parallel to the fourth rail. A plurality of the support members are configured on the slider of the second slide rail group.

[0010] In the above scheme, preferably, a third slider and a fourth slider are slidably arranged on the third track, a first slider and a second slider are slidably arranged on the fourth track, and there are four support members, which are respectively arranged on the four sliders of the second slide rail group.

[0011] In the above scheme, preferably, the support device further includes a first driving device and a second driving device. The first driving device is used to drive the third track to move back and forth in the direction of the first slide rail group, and the second driving device is used to drive the second slider and the fourth slider to move back and forth in the direction of the second slide rail group.

[0012] In the above scheme, preferably, the second driving device includes a support base and a lead screw. The support base is disposed on the base, and the lead screw is rotatably disposed on the support base. A matching lead screw assembly is disposed on the lead screw assembly, and a first guide rod is fixedly disposed on the lead screw. Two first sliding sleeves are slidably disposed on the first guide rod, and the two first sliding sleeves are respectively fixedly connected to the second slider and the fourth slider.

[0013] In the above scheme, preferably, the support base is provided with a second guide rod, and a second sliding sleeve is slidably arranged on the second guide rod, and the two second sliding sleeves are respectively fixedly connected to the first slider and the third slider.

[0014] In the above scheme, preferably, the upper end of the support member is equipped with a suction cup for adsorbing and fixing the bottom plate of the plate.

[0015] A method for testing the impact resistance of sheet metal: S1: The operator or robot places the sheet on the support device, and the suction cup attaches and fixes the sheet.

[0016] S2: The sensing device on the electromagnetic acceleration channel identifies the height of its lower end relative to the plate surface and determines the plate thickness. The central control unit automatically adjusts the current intensity of the electromagnetic coil on the electromagnetic acceleration channel according to the plate thickness.

[0017] S3: The central control unit raises the control support component according to the requirements, so that the plate and the base are at the required angle.

[0018] S4: The sensing device detects the distance to the hammering point on the plate again, and the central control unit adjusts the current intensity according to the distance difference.

[0019] S5: The ball-dispensing device dispenses the ball, which is accelerated by the electromagnetic acceleration channel and then hammered onto the plate.

[0020] The beneficial effects of the present invention are as follows: The present invention provides a plate impact resistance testing device and its testing method, which can make the plate undergo impact resistance testing at different angles, and automatically identify the height change of the impact point, thereby changing the magnitude of the acceleration force of the hammer ball, so that the speed of the hammer ball hitting the plate remains consistent, thus improving the accuracy of the test. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the operation of the present invention.

[0022] Figure 2 This is a schematic diagram of the device of the present invention.

[0023] Figure 3 This is a plan view of the device of the present invention.

[0024] Figure 4 This is a cross-sectional view of the position of the drop hammer device of the present invention.

[0025] Figure 5 This is a cross-sectional view of the present invention.

[0026] Figure 6 This is a partial enlarged view of the sliding support block of the present invention. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1:

[0028] See Figures 1-6An impact resistance testing device and method for sheet metal, comprising a base 1, wherein a support device 2 for supporting the sheet metal and a drop hammer device 3 for impact testing are disposed on the base 1, the support device 2 comprising a support member 21, a first slide rail group 22, a second slide rail group 23, a first drive device 24 and a second drive device 25.

[0029] The first track group 22 and the second track group 23 are perpendicular to each other. The first track group 22 includes a first track 221 and a second track 222. The second track group 23 includes a third track 231 and a fourth track 232. The first track 221 and the second track 222 are fixed to the base 1 by bolts. Slider blocks are guided and slidably arranged on both the first track 221 and the second track 222. The third track 231 is fixed to the sliders of both the first track 221 and the second track 222 by bolts. The fourth track 232 is fixed to the base 1 by bolts. Thus, the third track 231 can move back and forth along the first track group 22 to change the distance relative to the fourth track 232. A third slider 236 and a fourth slider 237 are guided and slidably arranged on the third track 231. A first slider 234 and a second slider 235 are guided and slidably arranged on the fourth track 232.

[0030] The first driving device 24 and the second driving device 25 both include a support base 251, a lead screw 252 and a lead screw assembly 253. The lead screw 252 is rotatably mounted on the support base 251, and the lead screw assembly 253 is connected to the lead screw 252. A servo motor is mounted on the support base 251 for precisely driving the lead screw 252 to rotate.

[0031] The bracket 251 on the first drive device 24 is fixedly mounted on the base 1, while the wire assembly 253 is fixedly connected to the third track 231 by bolts. When the servo motor on the first drive device 24 rotates, the wire assembly 253 moves on the lead screw 252, thereby driving the third track 231 to move on the first track group 22.

[0032] The support base 251 of the second driving device 25 is also fixedly mounted on the base 1, and is perpendicular to the first driving device 24 and offset vertically, so that they will not collide when moving. The support base 251 of the second driving device 25 is fixedly mounted with a first guide rod 2531 in the same direction as the first track group 22, and the support base 251 is connected to the middle position of the second guide rod 2511. A second sliding sleeve 2512 is slidably mounted on the second guide rod 2511 on the left and right sides of the support base 251. The two second sliding sleeves 2512 are fixedly mounted on the first slider 234 and the third slider 236, respectively. Since the support base 251 is fixed and the first slider 234 is fixedly mounted on the base 1, the first slider 234 is always fixed and cannot move, while the third slider 236 can only move along the direction of the first track group 22 with the third track 231.

[0033] The second drive device 25 has a first guide rod 2531 fixedly mounted on the wire assembly 253, with the fixed position being the middle position of the first guide rod 2531 and parallel to the second guide rod 2511. The first guide rod 2531 also has two first sliding sleeves 2532 slidably mounted on it. The two first sliding sleeves 2532 are located on the left and right sides of the wire assembly 253, respectively, and are fixedly mounted on the second slider 235 and the fourth slider 237 by bolts. When the second drive device 25 is driven, the second slider 235 and the fourth slider 237 move along the direction of the second slide rail group 23. Since the second slider 235 is slidably mounted on the fourth track 232, it can only move along the direction of the second slide rail group 23. The fourth slider 237 is fixedly mounted on the third track 231, so it can move along the direction of the second slide rail group 23 and also along the direction of the first track group 22.

[0034] Each of the first slider 234, the second slider 235, the third slider 236, and the fourth slider 237 is equipped with a support member 21. The support member 21 is a hydraulic, pneumatic, or electric telescopic rod, and a suction cup member 211 that can generate negative pressure suction is provided at the upper end of the telescopic member to adsorb the back of the plate.

[0035] The first slider 234, the second slider 235, the third slider 236 and the fourth slider 237 form a right-angled quadrilateral mechanism. Driven by the first driving device 24 and the second driving device 25, the length and width of the right-angled quadrilateral mechanism can change, thereby enabling it to adapt to the support operation of plates of different lengths and widths.

[0036] Each slider is equipped with a support member 21, which can extend and retract vertically. As a result, the four points extend to different heights according to the instructions of the equipment control center, so that the supporting plate and the base 1 present different angle relationships.

[0037] Since the tested boards are of different sizes, the position of the support point needs to be changed when conducting impact resistance testing. This is achieved by moving the first slider 234, the second slider 235, the third slider 236, and the fourth slider 237 to change the position of the support point, thus adapting it to different sizes of boards for impact resistance testing.

[0038] A vision or laser sensor can be mounted on the base 1 to identify the length and width dimensions of the material to be tested, and then the central control unit can automatically adjust the support point.

[0039] The falling hammer device 3 includes an electromagnetic acceleration channel 31, a ball ejection device 32, and a ball storage hopper 33. The ball ejection device 32 includes a guide box 321, which has a guide cavity and holes at both ends that are only large enough for the hammered ball to pass through. A turntable 322 is rotatably arranged inside the guide box 321. The turntable 322 has multiple grooves 323 that can only accommodate a single hammered ball. There can be one or more grooves 323. In this embodiment, four are preferred. The upper hole of the guide box 321 is equipped with a ball storage hopper 33 for storing the hammered ball, and the upper end of the electromagnetic acceleration channel 31 is fixedly connected to the lower hole.

[0040] The ball storage hopper 33 is conical, allowing all the hammered balls inside to move automatically downwards. Initially, the groove 323 on the turntable 322 aligns with the ball drop hole at the lower end of the ball storage hopper 33, and a hammered ball in the ball storage hopper 33 falls onto the groove 323. At this time, the turntable 322 rotates 180 degrees and transports the hammered ball to the upper end of the electromagnetic acceleration channel 31. The hammered ball undergoes free fall within the electromagnetic acceleration channel 31. Simultaneously, multiple electromagnetic coils are arranged on the electromagnetic acceleration channel 31. When the electromagnetic coils are energized, they generate a magnetic field, which accelerates the hammered ball as it passes through, causing it to fall from a lower height. When it strikes the surface of the board, its final speed reaches the speed required for detection.

[0041] A distance sensor is installed at the lower end of the electromagnetic acceleration channel 31 to detect the distance between the lower end of the electromagnetic acceleration channel 31 and the lower end of the plate surface. When the support member 21 on the support device 2 is adjusted to the required angle between the plate and the base 1 under the control of the central control unit, the vertical position of the vertical point below the electromagnetic acceleration channel 31 changes. Therefore, during the drop hammer test, the distance sensor first identifies the distance between the lower end of the electromagnetic acceleration channel 31 and the impact point. The central control unit compares this distance with the initial distance and adjusts the current of the electromagnetic coil according to the difference in distance so that the speed at which the hammer ball hits the plate meets the set speed value.

[0042] Since different thicknesses of boards require different hammering forces, and the impact and the mass and velocity of the impacting object are related, while the mass of the hammer ball does not change, the hammering force required for different boards can be adapted by changing the speed at which the hammer ball strikes the board.

[0043] Initially, all support components 21 are in a retracted state, i.e., at zero position. At this time, the robot or operator places the plate on the support component 21. The plate and the base 1 are parallel. The distance sensor first detects the distance between the electromagnetic acceleration channel 31 and the upper surface of the plate, and then identifies the thickness of the plate. The central control unit adjusts the current intensity of the electromagnetic coil according to the identified plate thickness, so that the hammer ball can be used for hammering operations on plates of different thicknesses.

[0044] After the initial current setting for the appropriate thickness is completed, the plate is subjected to impact tests at different angles as needed. After the plate angle is adjusted, the distance sensor detects the distance again, and the central control unit compares it with the initial distance. Based on the distance difference, the central control unit adjusts the current of the electromagnetic coil so that the speed at which the hammer ball hits the plate matches the set speed value.

[0045] Its working principle or usage method is as follows: Initially, the support 21 is in the zero position. The operator or the central control unit adjusts the position of the four support points according to the impact resistance requirements, and then places the plate on the support device 2. The suction cup 211 on the support 21 will attract the plate. At this time, the plate and the base 1 are in a parallel state. The distance sensor first detects the distance between the electromagnetic acceleration channel 31 and the upper surface of the plate, and then identifies the thickness of the plate. The central control unit adjusts the current intensity of the electromagnetic coil according to the identified plate thickness, so that the hammer ball can be used for hammering operations on plates of different thicknesses.

[0046] After setting the initial current intensity, impact resistance testing is performed as needed. If only impact resistance testing in a parallel state is required, the turntable 322 rotates 180 degrees to transport the hammer ball in the ball storage hopper 33 to the upper end of the electromagnetic acceleration channel 31. The hammer ball undergoes free fall within the electromagnetic acceleration channel 31, and the electromagnetic coil accelerates the passing hammer ball. When it strikes the surface of the plate, its final speed reaches the speed required for testing.

[0047] If an impact test of the inclined surface is required, after the initial current intensity is set, the four support members 21 will rise to the set height as needed, so that the plate and the base 1 will present different angles. At the same time, the first drive device 24 and the second drive device 25 will drive synchronously, so that the second slider 235, the third slider 236 and the fourth slider 237 will move, so that the three will follow the position change of the support member 21 after the plate angle changes, so that the plate will tilt in the direction of the first slide rail group 22 and the second slide rail group 23.

[0048] Example 2:

[0049] See Figures 1-6 The difference from Embodiment 1 is that a sliding support block 26 is also provided between the support members 21, but the rest are the same.

[0050] The first slider 234 and the second slider 235 have a first contact 261 on the suction cup 211 of the support member 21. The third slider 236 and the fourth slider 237 have a second contact 262 on the suction cup 211 of the support member 21. The first contact 261 and the second contact 262 are guided and slidably connected together. When the suction cup 211 is adsorbed on the lower end surface of the plate, the upper end surfaces of the first contact 261 and the second contact 262 abut against the lower end surface of the plate. Thus, the two sliding support blocks 26 form two support platforms, which enhances the support force on the plate.

[0051] Furthermore, when it is necessary to perform an inclined surface impact test, after the initial current intensity is set, except for the suction cup 211 on the first slider 234 which is in a negative pressure adsorption state, the other three are in a depressurized and relaxed state. Therefore, as the four support members 21 rise to the set height as required, the plate is adsorbed by the suction cup 211 on the first slider 234 and moves along with the suction cup 211 on the first slider 234. During the movement, the sliding support block 26 provides sliding support for the plate. Therefore, the four support members 21 do not undergo displacement changes. Thus, it is not necessary for the first drive device 24 and the second drive device 25 to perform synchronous drive work, thereby simplifying the control process.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for testing the impact resistance of sheet metal, characterized in that: Including the base (1), The base (1) is equipped with a support device (2) for supporting the plate. The support device (2) includes multiple support members (21), and the support members (21) can be raised and lowered to make the plate supported by it present different angles with the base (1). The drop hammer device (3) is mounted on the base (1) via a support frame and is located above the support device (2). The drop hammer device (3) is equipped with an electromagnetic acceleration channel (31) and a sensing device for identifying the height of the hammering point on the plate. The electromagnetic acceleration channel (31) is used to electromagnetically accelerate the hammer ball and control the speed of the hammer ball when it hits the plate.

2. The impact resistance testing device for sheet metal according to claim 1, characterized in that: The drop hammer device (3) further includes a ball dispensing device (32) and a ball storage container (33) for storing hammered balls. The ball dispensing device (32) includes a guide box (321) with one end connected to the upper end of the electromagnetic acceleration channel (31) and the other end connected to the lower end of the ball storage container (33) and a turntable (322) rotatably disposed in the guide box (321). The turntable (322) is provided with a groove (323) for accommodating a single hammered ball. The turntable (322) rotates to move a single hammered ball from the ball storage container (33) to the upper end of the electromagnetic acceleration channel (31).

3. The impact resistance testing device for sheet metal according to claim 2, characterized in that: The turntable (322) is evenly provided with multiple grooves (323) in the circumferential direction. Each groove (323) can only accommodate a single hammer ball. A servo motor is connected to the turntable (322) to drive its precise rotation.

4. The impact resistance testing device for sheet metal according to claim 1, characterized in that: The support device (2) further includes a first slide rail group (22) fixedly disposed on the base (1) and a second slide rail group (23) perpendicular to the first slide rail group (22). The second slide rail group (23) includes a third rail (231) and a fourth rail (232). The third rail (231) is disposed on the slider of the first slide rail group (22), and the fourth rail (232) is disposed on the base (1) so that the third rail (231) can move parallel to the fourth rail (232). A plurality of the support members (21) are disposed on the slider of the second slide rail group (23).

5. The impact resistance testing device for sheet metal according to claim 5, characterized in that: The third track (231) is slidably configured with a third slider (236) and a fourth slider (237), the fourth track (232) is slidably configured with a first slider (234) and a second slider (235), and there are four support members (21), which are respectively configured on the four sliders of the second slide rail group (23).

6. The impact resistance testing device for sheet metal according to claim 5, characterized in that: The support device (2) further includes a first drive device (24) and a second drive device (25). The first drive device (24) is used to drive the third track (231) to move back and forth in the direction of the first slide rail group (22). The second drive device (25) is used to drive the second slider (235) and the fourth slider (237) to move back and forth in the direction of the second slide rail group (23).

7. The impact resistance testing device for sheet metal according to claim 6, characterized in that: The second driving device (25) includes a support base (251) and a lead screw (252). The support base (251) is disposed on the base (1), and the lead screw (252) is rotatably disposed on the support base (251). A matching thread assembly (253) is disposed on the lead screw (252). A first guide rod (2531) is fixedly disposed on the thread assembly (253). Two first sliding sleeves (2532) are slidably disposed on the first guide rod (2531), and the two first sliding sleeves (2532) are respectively fixedly connected to the second slider (235) and the fourth slider (237).

8. The impact resistance testing device for sheet metal according to claim 7, characterized in that: The bracket base (251) is provided with a second guide rod (2511), and a second sliding sleeve (2512) is provided on the second guide rod (2511) for guiding and sliding. The two second sliding sleeves (2512) are respectively fixedly connected to the first slider (234) and the third slider (236).

9. The impact resistance testing device for sheet metal according to claim 8, characterized in that: The upper end of the support member (21) is equipped with a suction cup (211) for adsorbing and fixing the bottom plate of the plate.

10. A testing method using the impact resistance testing device for sheet metal as described in claim 9, characterized in that: S1: The operator or robot places the sheet on the support device (2), and the suction cup (211) adsorbs and fixes the sheet; S2: The sensing device on the electromagnetic acceleration channel (31) identifies the height of its lower end and the plate surface, determines the plate thickness, and the central control unit automatically adjusts the current intensity of the electromagnetic coil on the electromagnetic acceleration channel (31) according to the plate thickness. S3: The central control unit raises the control support (21) according to the requirements, so that the plate and the base (1) present the required angle; S4: The sensing device detects the distance to the hammering point on the plate again, and the central control unit adjusts the current intensity according to the distance difference. S5: The ball-dispensing device (32) dispenses the ball, and the hammered ball is accelerated by the electromagnetic acceleration channel (31) and then hammered onto the plate.

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