Toughened glass impact resistance experiment device and method

Abstract

The invention discloses a tempered glass impact resistance experiment device and method, and relates to the technical field of tempered glass performance tests.The tempered glass impact resistance experiment device comprises a main body structure which is composed of a base, a side supporting shell and a top cover shell, and a through groove is formed in the top of the base; the locking structure is fixed at the top of the base and is used for clamping the test glass to cover the through groove; the throwing mechanism is arranged on the top cover shell and used for storing and releasing the steel balls; the screening mechanism is arranged below the base and is used for receiving the steel balls falling down due to breakdown of the test glass to form buffer floating and screening the crushed test glass; the detection mechanism is arranged on the screening mechanism and detects the touch pressure by means of buffer floating; the collecting mechanism is arranged on the main body structure and used for recycling the steel balls; according to the invention, an automatic putting test is realized; broken glass blocks are screened, and whether the four corners are difficult to fall off or not is judged; the problems of low efficiency, large data error and potential safety hazards of traditional testing are solved, and the testing precision and safety are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tempered glass performance testing, and particularly relates to an impact resistance experiment device and method for tempered glass. Background Art

[0002] Due to its high strength, heat resistance and safety performance, tempered glass is widely used in fields such as building facades, automobile windows, and household appliance panels. To ensure that the impact resistance performance of common flat tempered glass meets the standards in actual use, strict impact resistance tests are required. Currently, common testing methods in the industry mainly include free-falling ball impact tests, shotgun bag impact tests, etc., but the existing devices and methods still have the following significant problems: 1. Traditional tests mostly rely on manual operations, such as manually dropping steel balls or shotgun bags, resulting in low test efficiency and results being affected by the skills of the operators, with poor consistency. For example, it is difficult to precisely control the interval and landing position of the steel balls, which may cause deviations in test data. 2. The existing equipment lacks an automated design for collecting and screening broken glass fragments. After the test, it is necessary to manually clean up the fragments and classify them, which is time-consuming and laborious. 3. Most devices only evaluate the glass performance through the number of impacts or the size of the fragments, ignoring the stability detection of the edges and corners after breaking. In actual applications, if there are residual sharp fragments or the edges do not fall off after the glass breaks, it may still pose a safety hazard, and the existing technology lacks effective detection means for this. Summary of the Invention

[0003] The purpose of the present invention is to provide an impact resistance experiment device and method for tempered glass, which solves the problems of low automation and large data errors in traditional tests; inability to detect the state of the four corners of the broken glass, and potential safety hazards.

[0004] The present invention solves the above technical problems through the following technical solutions. The present invention includes a main structure, which is composed of a base, a side support shell and a top cover shell. A through groove is provided at the top of the base. A locking structure is fixed to the top of the base and is used to clamp the test glass to cover the through groove. A dropping mechanism is provided on the top cover shell and is used to store and release steel balls. A screening mechanism is provided below the base and is used to receive the steel balls that fall through the broken test glass to form a buffer float and screen the broken test glass. A detection mechanism is arranged on the screening mechanism to detect the touch pressure by means of the buffer float. A collection mechanism is arranged on the main structure to recycle the steel balls.

[0005] Preferably, the feeding mechanism includes a driver, a prism rod transmission member, and a release disk. The driver drives the release disk to rotate at preset time intervals through the prism rod transmission member. A plurality of storage grooves are equidistantly distributed on the circumference of the release disk, in which steel balls are stored and released through through holes opened on the top cover shell.

[0006] Preferably, the screening mechanism includes a screening plate, a first spring, and a pulling member. The screening plate is elastically connected to the base through the first spring. When the screening plate floats under the impact of the steel balls, the connection between the transmission member and the driver is disconnected through the pulling member; The first spring is fixed to the base through a carrier. The carrier includes a short rod and a lower support. The short rod is fixed on the base, and the lower support is fixed at the lower end of the short rod.

[0007] Preferably, the detection mechanism includes a fixed block, a floating rod, a second spring, and a pressure sensor. There are four fixed blocks fixed at the four corners of the screening plate. A ring sleeve is fixed on the floating rod. The ring sleeve is elastically connected to the fixed block through the second spring. The pressure sensor is arranged at the top end of the floating rod to contact the corner of the broken tempered glass to detect the contact force.

[0008] Preferably, the prism rod transmission member includes a first transmission rod, a second transmission rod, and a transmission sleeve with a prism tube structure. When the transmission sleeve disengages from the first transmission rod, the power transmission of the driver is interrupted. The transmission sleeve is connected to the pulling member; The pulling member includes a first plate rotatably sleeved on the transmission sleeve. The first plate is connected to a long rod. The lower end of the long rod is connected to the screening plate through a second plate.

[0009] Preferably, the storage grooves of the release disk are arranged in ascending order of the weight of the steel balls. The driver drives the release disk to gradually release steel balls of different weights to test the maximum impact kinetic energy.

[0010] Preferably, the locking structure includes a support frame, a pressing frame, and a pressing tool. The support frame is fixed on the base. The pressing tool includes a locking rod and a rotating pressing plate. The rotating pressing plate presses the test glass tightly between the support frame and the pressing frame through the rotation of the locking rod.

[0011] Preferably, the collection mechanism includes a translator, a push plate, a first monitor, a second monitor, a guiding pad, and a collection cup. The guiding pad is U-shaped and has a slope inward at the center to guide the steel balls to be recycled into the collection cup.

[0012] Preferably, the first monitor is an infrared sensor. When the steel ball drops, it triggers the translator to push the push plate to recycle the steel ball. The second monitor monitors that after the steel ball falls into the collection cup, it triggers the translator to push the push plate to reset.

[0013] A method for testing the impact resistance of tempered glass uses the above-mentioned tempered glass impact resistance testing device for experiments. The specific method steps are as follows: Step 1: The locking structure clamps the test glass so that it covers the through groove of the base; Step 2: Place steel balls on the release tray of the dispensing mechanism, and arrange the steel balls in ascending order of weight. Step 3: The driver drives the release tray to rotate, and releases the steel balls at preset time intervals for free fall to impact the surface of the test glass. Step 4: When the steel ball breaks the test glass, along with the fragments falling onto the screening mechanism, the impact on the dispensing mechanism terminates the steel ball dispensing. Step 5: The screening plate floats up and down under the action of Spring 1 to screen the fragments into qualified fragments and unqualified fragments. Step 6: The detection mechanism floats with the screening plate to impact the corner of the broken glass. If the detected peak pressure exceeds a certain value, it is determined that there are fragments that are not easy to fall off. Step 7: The collection mechanism recovers the steel balls, and the qualified fragments fall into the qualified area of the collection drawer, and the impact times, maximum impact kinetic energy, fragment size, and pressure data are recorded.

[0014] The beneficial effects of the present invention compared with the prior art are as follows: 1. Through the prism rod transmission part and the release tray of the dispensing mechanism, the automatic and precise dispensing of steel balls is realized. The driver releases the steel balls at preset time intervals, avoiding the interval deviation and landing error caused by manual operation. Combined with the linkage interruption mechanism of the screening mechanism, the test automatically terminates within 0.1 second after the glass is broken, reducing the number of ineffective impacts. Compared with traditional manual operation, the test efficiency is improved.

[0015] 2. The grid of the screening mechanism dynamically screens the fragments, quickly distinguishing qualified and unqualified fragments. Combined with the pressure sensor of the detection mechanism to detect the instantaneous peak pressure at the broken corner, the safety after the glass is broken is double-determined.

[0016] 3. The collection mechanism uses infrared sensors, namely Monitor 1 53 and Monitor 2 54, to control the translator and the push plate to automatically recover the steel balls. The slope design of the guiding pad ensures that the steel balls slide into the collection cup directionally, avoiding jamming or omission. At the same time, the linkage interruption mechanism and the automatic fragment screening function completely eliminate the risk of cuts when manually cleaning the broken glass. Brief Description of the Drawings

[0017] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is Figure 1 the front sectional structural schematic diagram of Figure 3 is Figure 2 the enlarged structural schematic diagram at A of Figure 4 is Figure 2 the enlarged structural schematic diagram at B of Figure 5 is Figure 2Schematic diagram of the three-dimensional structure; Figure 6 is Figure 5 Schematic diagram of a partial structure; Figure 7 is Figure 6 Schematic diagram of the partial structure decomposition; Figure 8 is Figure 7 Enlarged structure diagram at position C of The numbers in the figure indicate: 1. Main body structure; 11. Base; 12. Side support shell; 13. Top cover shell; 2. Locking structure; 21. Support frame; 22. Pressing frame; 23. Pressing tool; 3. Test glass; 4. Feeding mechanism; 41. Driver; 42. Transmission parts; 421. First transmission rod; 422. Second transmission rod; 423. Transmission sleeve; 43. Release plate; 44. Storage groove; 5. Collection mechanism; 51. Translator; 52. Pushing plate; 53. First monitor; 54. Second monitor; 55. Guide pad; 56. Collection cup; 6. Screening mechanism; 61. Short rod; 62. Lower support; 63. First spring; 64. Screening plate; 65. Pulling part; 7. Detection mechanism; 71. Fixed block; 72. Floating rod; 73. Anti - detachment block; 74. Ring sleeve; 75. Second spring; 76. Pressure sensor; 8. Collection drawer; 9. Steel ball. Detailed implementation mode

[0018] The following further elaborates on the above - mentioned and additional technical features and advantages of the present invention with reference to the accompanying drawings. Embodiment

[0019] This embodiment provides a technical solution: a device for impact resistance experiment of tempered glass, as Figure 1-8 shown, including a main body structure 1, which is composed of a base 11, a side support shell 12 and a top cover shell 13. A through - slot is provided at the top of the base 11; the side support shell 12 and the top cover shell 13 are welded by an alloy frame and are used to support other functional modules; A locking structure 2 is fixed on the top of the base 11, including a support frame 21, a pressing frame 22 and a pressing tool 23. The support frame 21 is a square steel frame fixed on the base 11, and the support frame 21 has an elastic pad frame made of silica gel for clamping the test glass 3 to cover the through - slot and avoid edge stress concentration; Optionally, the pressing tool 23 includes a locking rod and a rotating pressing plate, and the rotating pressing plate presses the test glass 3 between the support frame 21 and the pressing frame 22 by the rotation of the locking rod.

[0020] The feeding mechanism 4 is provided on the top cover shell 13 and is used to store and release the steel balls 9. It includes a driver 41, a prism rod transmission member 42 and a release disc 43. The driver 41 is a stepper motor, which drives the release disc 43 to rotate at a preset time interval through the prism rod transmission member 42. A plurality of storage grooves 44 are equidistantly distributed on the circumference of the release disc 43, in which the steel balls 9 are stored and released through a through hole opened on the top cover shell 13.

[0021] It should be noted that in this embodiment, the release disc 43 rotates at a constant speed, and six storage grooves 44 are equidistantly distributed on the circumference of the release disc 43, with a spacing of 60° between each storage groove 44, and the steel balls 9 are released through the through hole every 30 seconds at a preset time interval. Optionally, the storage grooves 44 of the release disc 43 are arranged in ascending order of the weight of the steel balls 9. The driver 41 drives the release disc 43 to gradually release steel balls 9 of different weights to test the maximum impact kinetic energy, and the maximum tolerable impact kinetic energy is calculated through the kinetic energy formula, which refers to free fall motion here.

[0022] The prism rod transmission member 42 includes a first transmission rod 421, a second transmission rod 422 and a transmission sleeve 423 with a prism tube structure. When the transmission sleeve 423 disengages from the first transmission rod 421, the power transmission of the driver 41 is interrupted, and the transmission sleeve 423 is connected to the pulling member 65. It should be noted that the transmission sleeve 423 transmits power to the first transmission rod 421 through a hexagonal prism tube to ensure the rotation accuracy of the release disc 43. The screening mechanism 6 is provided below the base 11 and is used to receive the steel balls 9 that fall through the puncture test glass 3 to form a buffer float and screen the broken test glass 3. It includes a screening plate 64, a first spring 63 and a pulling member 65. The screening plate 64 is elastically connected to the base 11 through the first spring 63. When the screening plate 64 floats under the impact of the steel balls 9, the connection between the transmission member 42 and the driver 41 is disconnected through the pulling member 65. The first spring 63 is fixed to the base 11 through a carrier. The carrier includes a short rod 61 and a lower support 62. The short rod 61 is fixed on the base 11, and the lower support 62 is fixed at the lower end of the short rod 61.

[0023] The pulling member 65 includes a first plate rotatably sleeved on the transmission sleeve 423. The first plate is connected with a long rod, and the lower end of the long rod is connected to the screening plate 64 through a second plate. When the screening plate 64 moves downward, the long rod of the pulling member 65 pulls the transmission sleeve 423 through mechanical linkage, and the response time ≤ 0.1 second to achieve rapid interruption.

[0024] It should be noted that the screening plate 64 is a 304 stainless steel square grid with a grid size of 8mm × 8mm in this embodiment. It is elastically connected to the base 11 through the first spring 63 on the short rod 61 via the carrier. When the screening plate 64 moves downward by more than 5mm under the impact of the steel balls 9, the transmission sleeve 423 is pulled by the pulling member 65 to disengage from the prism rod transmission member 42, interrupting the power transmission of the driver 41. The detection mechanism 7 is arranged on the screening mechanism 6 and floats with buffering to detect the touch pressure; it includes a fixed block 71, a floating rod 72, a second spring 75 and a pressure sensor 76. There are four fixed blocks 71 which are fixed at the four corners of the screening plate 64. A collar 74 is fixed on the floating rod 72. The collar 74 is elastically connected to the fixed block 71 through the second spring 75. The pressure sensor 76 is arranged at the top end of the floating rod 72 to contact the corner of the broken tempered glass to detect the contact force.

[0025] It should be noted that an anti - detachment block 73 is arranged at the lower end of the floating rod 72. The pressure sensor 76 adopts an existing technology model to detect the pressure value obtained when the pressure sensor 76 rises to the fixed position of the test glass 3 or above, such as 50N. If it exceeds, it is judged whether it is not easy to fall off.

[0026] The collection mechanism 5 is arranged on the main structure 1 for recycling the steel balls 9; it includes a translator 51, a push plate 52, a monitor 53, a monitor 54, a guide pad 55 and a collection cup 56. The guide pad 55 is U - shaped and has a slope inward at the center. The slope of the guide pad 55 optimizes the sliding path of the steel balls 9 to avoid jamming; it guides the steel balls 9 to be recycled into the collection cup 56.

[0027] Optionally, the monitor 53 is an infrared sensor. It monitors that when the steel ball 9 drops, it triggers the translator 51 to push the push plate 52 to recycle the steel ball 9. The monitor 54 monitors that when the steel ball 9 falls into the collection cup 56, it triggers the translator 51 to push the push plate 52 to reset.

[0028] It should be noted that the translator 51 is a linear motor, which drives the push plate 52 to push the steel ball 9 to the collection cup 56 at a speed of 0.5m / s. The monitors 53 and 54 are infrared photoelectric sensors, which are respectively used to detect the dropping signal of the steel ball 9 and the recycling position. The collection drawer 8 is divided into a qualified broken piece area to collect fragments with a size ≤ 8mm.

[0029] In this embodiment, when using this device for the impact resistance test of tempered glass, the specific working principle is as follows: First, lock the glass; the test glass 3 to be measured is clamped above the through - slot at the top of the base 11 by the support frame 21 and the pressing frame 22 of the locking structure 2. The rotating pressing plate of the pressing tool 23 applies pressure evenly through the lever principle of the locking rod, ensuring that the edge of the glass is protected by the silicone elastic gasket frame to avoid stress concentration.

[0030] Subsequently, drop the steel balls 9; the driver 41 of the dropping mechanism 4 is started, and the release disc 43 is driven to rotate at a constant speed through the hexagonal prism - structured transmission rod 421 and transmission rod 422 of the transmission part 42. The six storage slots 44 of the release disc 43 are arranged in ascending order according to the weight of the steel balls 9. One steel ball 9 is released every 30 seconds and freely falls from the height of the top cover shell 13, vertically impacting the center of the glass, calculating the impact kinetic energy and recording it.

[0031] When the steel ball 9 breaks the glass, the fragments fall through the through slot onto the screening plate 64 of the screening mechanism 6. The screening plate 64 compresses the first spring 63 under the impact of the fragments and moves downward by more than 5 mm. The pulling member 65 connected by the short rod 61 and the lower support 62 pulls the transmission sleeve 423 away from the first transmission rod 421, physically interrupting the power transmission of the driver 41 and stopping the delivery of the steel ball 9.

[0032] The screening plate 64 floats up and down with an amplitude of 3 mm under the action of the first spring 63. Qualified fragments ≤ 8 mm fall into the qualified area of the collection drawer 8 through the grid, and check whether there are any remaining fragments. At the same time, the fixed block 71 of the detection mechanism 7 drives the floating rod 72 to move up and down through the second spring 75, and the pressure sensor 76 impacts the corner of the broken glass. If the peak pressure exceeds 50 N, it is determined that "the fragments are not easily detached", indicating that the test glass 3 has a defect of not being easily broken.

[0033] After the monitor 53 of the collection mechanism 5 detects the signal of the steel ball 9 falling, it starts the translator 51 after a 5-second delay to drive the push plate 52 to push the steel ball 9 into the collection cup 56 at a speed of 0.2 m / s along the direction set by the guiding pad 55. The monitor 54 resets after confirming the recovery; the collection drawer 8 collects the fragments.

[0034] Finally, the external connected PLC controller integrates the impact times, fragment size distribution and pressure data to generate a test report including the energy - times curve, qualification rate and risk level.

[0035] A method for testing the impact resistance of tempered glass, using the above-mentioned experimental device for testing the impact resistance of tempered glass, and the specific method steps are as follows: Step 1: The locking structure 2 clamps the test glass 3 so that it covers the through slot of the base 11; the support frame 21 and the pressing frame 22 of the locking structure 2 clamp the test glass 3 so that it covers the through slot of the base 11. Step 2: Place the steel balls 9 in the release tray 43 of the delivery mechanism 4, and the steel balls 9 are arranged in increasing order of weight; place the steel balls 9 in the storage grooves 44 of the release tray 43. Step 3: The driver 41 drives the release tray 43 to rotate, and releases the steel balls 9 at preset time intervals to freely fall and impact the surface of the test glass 3; the driver 41 drives the release tray 43 to rotate at preset time intervals, for example: 30S, and record the impact times and kinetic energy. Step 4: When the steel ball 9 breaks the test glass 3, along with the fragments falling onto the screening mechanism 6, it acts on the delivery mechanism 4 under the impact to terminate the delivery of the steel ball 9; the fragments fall onto the screening plate 64 of the screening mechanism 6, and the screening plate 64 is pressed down under the impact and disconnects the connection between the prism rod transmission member 42 and the driver 41 through the pulling member 65, realizing the termination of the delivery of the steel ball 9. Step Five: The screening plate 64 floats up and down under the action of the first spring 63 to screen the fragments into qualified fragments and unqualified fragments; the screening plate 64 floats up and down through the first spring 63 to realize vibration-accelerated screening of the fragments. Step Six: The detection mechanism 7 floats with the screening plate 64 to impact the corners of the broken glass. If the detected peak pressure exceeds a certain value, it is determined that there are fragments that are not easily detached; the floating rod 72 and the pressure sensor 76 of the detection mechanism 7 impact the corners of the test broken glass 3. If the peak pressure exceeds a certain value, such as 50 N, it is determined that there are fragments that are not easily detached. Step Seven: The collection mechanism 5 recovers the steel balls 9, and the qualified fragments fall into the qualified area of the collection drawer 8, and the impact times, the maximum impact kinetic energy, the fragment size and the pressure data are recorded. The translator 51 of the collection mechanism 5 pushes the push plate 52 to recover the steel balls 9 into the collection cup 56, and the qualified fragments fall into the qualified area of the collection drawer 8.

[0036] The above are only the preferred embodiments of the present invention, which are illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all of them will fall within the protection scope of the present invention.

Claims

1. An impact resistance test device for tempered glass, characterized in that, It includes a main body structure (1), which is composed of a base (11), a side support shell (12) and a top cover shell (13). A through groove is provided at the top of the base (11). A locking structure (2) is fixed to the top of the base (11) and is used to clamp a test glass (3) to cover the through groove. A feeding mechanism (4) is arranged on the top cover shell (13) and is used to store and release steel balls (9). A screening mechanism (6) is arranged below the base (11) and is used to receive the steel balls (9) that fall after piercing the test glass (3) to form a buffer float and screen the broken test glass (3). A detection mechanism (7) is arranged on the screening mechanism (6) to detect the touch pressure by means of the buffer float. A collection mechanism (5) is arranged on the main body structure (1) to recover the steel balls (9).

2. The impact resistance test device for tempered glass according to claim 1, wherein, The feeding mechanism (4) includes a driver (41), a prism rod transmission member (42) and a release disc (43). The driver (41) drives the release disc (43) to rotate at a preset time interval through the prism rod transmission member (42). A plurality of storage grooves (44) are equidistantly distributed on the circumference of the release disc (43), and steel balls (9) are stored therein and released through through holes opened on the top cover shell (13).

3. The tempered glass impact resistance test device according to claim 2, characterized in that, The screening mechanism (6) includes a screening plate (64), a first spring (63) and a pulling member (65). The screening plate (64) is elastically connected to the base (11) through the first spring (63). When the screening plate (64) floats under the impact of the steel balls (9), the connection between the transmission member (42) and the driver (41) is disconnected through the pulling member (65). The first spring (63) is fixed to the base (11) through a carrier. The carrier includes a short rod (61) and a lower support (62). The short rod (61) is fixed to the base (11), and the lower support (62) is fixed to the lower end of the short rod (61).

4. The impact resistance test device for tempered glass according to claim 3, wherein The detection mechanism (7) includes fixing blocks (71), floating rods (72), a second spring (75) and a pressure sensor (76). There are four fixing blocks (71) which are fixed at the four corners of the screening plate (64). A ring sleeve (74) is fixed on the floating rod (72). The ring sleeve (74) is elastically connected to the fixing block (71) through the second spring (75). The pressure sensor (76) is arranged at the top end of the floating rod (72) to detect the contact force by contacting the corner of the broken tempered glass.

5. The tempered glass impact resistance test device according to claim 3, characterized in that, The prism rod transmission member (42) includes a first transmission rod (421), a second transmission rod (422) and a transmission sleeve (423) with a prism tube structure. When the transmission sleeve (423) disengages from the first transmission rod (421), the power transmission of the driver (41) is interrupted. The transmission sleeve (423) is connected to the pulling member (65). The pulling member (65) includes a plate one rotatably sleeved on the transmission sleeve (423). The plate one is connected with a long rod, and the lower end of the long rod is connected to the screening plate (64) through a plate two.

6. The impact resistance test device for tempered glass according to claim 2, characterized in that, The storage grooves (44) of the release disc (43) are arranged in ascending order of the weight of the steel balls (9). The driver (41) drives the release disc (43) to gradually release steel balls (9) of different weights to test the maximum impact kinetic energy.

7. The impact resistance test device for tempered glass according to claim 1, wherein, The locking structure (2) includes a support frame (21), a pressing frame (22) and a pressing tool (23). The support frame (21) is fixed on the base (11), and an elastic cushion frame is arranged on the support frame (21). The pressing tool (23) includes a locking rod and a rotating pressing plate. The rotating pressing plate presses the test glass (3) tightly between the support frame (21) and the pressing frame (22) by the rotation of the locking rod.

8. The impact resistance test device for tempered glass according to claim 1, characterized in that, The collection mechanism (5) includes a translator (51), a push plate (52), a monitor one (53), a monitor two (54), a guiding cushion (55) and a collection cup (56). The guiding cushion (55) is U-shaped and has a slope inward at the center to guide the recovery of the steel balls (9) into the collection cup (56).

9. The impact resistance test device for tempered glass according to claim 8, wherein, The monitor one (53) is an infrared sensor. When it monitors that the steel balls (9) fall, it triggers the translator (51) to push the push plate (52) to recover the steel balls (9). The monitor two (54) monitors that the steel balls (9) fall into the collection cup (56) and then triggers the translator (51) to push the push plate (52) to reset.

10. A method for impact resistance test of tempered glass, which is tested by using the impact resistance test device for tempered glass described in any one of claims 1-9, characterized in that, The specific method steps are as follows: Step 1: The locking structure (2) clamps the test glass (3) so that it covers the through groove of the base (11). Step 2: Place the steel balls (9) on the release tray (43) of the feeding mechanism (4). The steel balls (9) are arranged in ascending order of weight. Step 3: The driver (41) drives the release tray (43) to rotate and releases the steel balls (9) at preset time intervals to free fall and impact the surface of the test glass (3). Step 4: When the steel balls (9) break the test glass (3), along with the fragments falling onto the screening mechanism (6), under the impact, it acts on the feeding mechanism (4) to terminate the feeding of the steel balls (9). Step 5: The screening plate (64) floats up and down under the action of the first spring (63) to screen the fragments into qualified fragments and unqualified fragments. Step 6: The detection mechanism (7) floats with the screening plate (64) and impacts the corners of the broken glass. If the detected peak pressure exceeds a certain value, it is determined that there are fragments that are not easy to fall off. Step 7: The collection mechanism (5) recovers the steel balls (9), and the qualified fragments fall into the qualified area of the collection drawer (8), and the impact times, maximum impact kinetic energy, fragment size and pressure data are recorded.

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