A stress testing instrument and method for glass products

Abstract

This invention discloses a stress testing instrument and method for glass products, belonging to the field of strength characteristic testing of glass products. It includes a support part and a ball-dropping detection part connected to the upper end of the support part; it also includes an anti-stress accumulation component, which includes a baffle plate, a surrounding plate fixed to the upper end of the baffle plate, a ball-dropping opening inside the baffle plate, a sliding groove inside the baffle plate, a rebound blocking part located inside the baffle plate, and a power-releasing component connected inside the baffle plate to push the rebound blocking part to move. When the ball hits the glass and causes the first impact and rebounds, the baffle plate can physically isolate the rebounding ball from the glass, thereby ensuring the final failure state of the glass. By intercepting the rebounding ball, the energy superposition caused by subsequent uncontrolled impacts is completely eliminated, avoiding the degradation of the test from single impact to fatigue impact; making the test results fully conform to the standard of single load, ensuring the purity of the experimental data.

Description

Technical Field

[0001] This invention relates to the field of strength characteristic testing of glass products, and more specifically, to a stress tester and testing method for glass products. Background Technology

[0002] Glass products refer to products or articles made primarily of glass through various processing techniques (such as blowing, pressing, drawing, casting, coating, etc.).

[0003] During the manufacturing process of glass products, stress testing is required. Mechanical stress testing of the strength characteristics of solid materials is an important part of stress testing and performance evaluation of glass products. Mechanical stress testing refers to measuring the load-bearing limit, elastic modulus, or fatigue life of glass as a solid material by applying external mechanical loads (compression, tension, bending force), with the aim of verifying the structural strength of the material.

[0004] The impact resistance of glass products (such as laminated glass, automotive windshields and high-performance industrial glass) is a core indicator for assessing their safety; the falling ball impact test, as a standardized means of simulating the strength characteristics of glass under dynamic loads, evaluates the toughness of materials by measuring the critical fracture energy.

[0005] During a falling ball impact test, after the steel ball bounces off the glass upon its first impact, it must be effectively intercepted to prevent uncontrolled secondary impacts and avoid the test degenerating from a "single impact test" into a "fatigue impact test." To address this issue, several interception schemes have emerged in existing technologies:

[0006] Chinese invention patent application CN112033829A discloses a magnetic interception scheme that uses an electromagnetic ring with a through hole to try to capture a steel ball in the air. However, since the magnetic force in the central region of the electromagnetic field tends to be zero and the steel ball is in a state of high speed, the attraction of the magnetic field over a long distance has extremely high uncertainty. The ball is very likely to hit the inner wall of the ring and cause violent vibration, or even the interception will fail.

[0007] Chinese invention patent application CN121275518A discloses an interception scheme using an interceptor plate, and Chinese utility model patent CN217385062U discloses an interception scheme that collects bouncing balls at a receiving end. The interceptor plate and receiving end are often made of hard materials. When a high-speed rebounding steel ball directly impacts the hard interceptor, it generates a violent secondary rebound, causing the ball to bounce erratically on the interception mechanism. This not only generates significant mechanical noise and vibration, interfering with the measurement environment of precision sensors, but may also lead to fatigue damage or plastic deformation of the interception mechanism due to frequent stress. Most existing interception devices focus only on physical blocking, neglecting the rapid dissipation of the steel ball's residual kinetic energy and the stability of its capture. Summary of the Invention

[0008] In view of the problems existing in the prior art, the purpose of this invention is to provide a stress tester and testing method for glass products.

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A stress testing instrument for glass products includes a support part and a falling ball detection part connected to the upper end of the support part;

[0011] It also includes an anti-stress accumulation component, which includes a baffle 1, a surrounding plate 2 fixed to the upper end of the baffle 1, a ball drop opening opened inside the baffle 1, a sliding groove opened inside the baffle 1, a rebound blocking part located inside the baffle 1, a power storage and release component connected inside the baffle 1 to push the rebound blocking part to move, an electric push rod fixed to the baffle 1, a push plate slidably connected to the inner wall of the ball drop opening and fixed to the telescopic end of the electric push rod on one side, and an infrared sensing part fixed to the lower part of the baffle 1.

[0012] The rebound blocking part includes a second baffle that slides in the groove, two magnetic plates fixed to both sides of the second baffle, and two electromagnets fixed inside the first baffle and respectively attached to one side of the two magnetic plates.

[0013] Furthermore, the energy storage and release assembly includes a fixed seat fixed inside the baffle, a slide block slidably connected in the slide groove, and a spring with its two ends connected to the fixed seat and the slide block respectively. One side of the slide block is in contact with one side of the baffle.

[0014] Furthermore, the upper and lower ends of the electric actuator both extend outward through the baffle, and protective pads are fixed to the lower ends of the electric actuator and the infrared sensing part. A protective cover for shielding the upper end of the electric actuator is fixed to the upper end of the baffle.

[0015] Furthermore, a buffer pad is fixed to one side of the push plate.

[0016] Furthermore, the upper end of the second baffle is provided with a groove, and the upper end of the second baffle is also connected to a flexible ball receiving part. The flexible ball receiving part includes a plate body connected to the upper end of the second baffle, a slot opened inside the plate body, and a mesh body fixed to the inner wall of the slot.

[0017] Furthermore, the baffle two is internally connected to a lifting anti-sinking part, which includes a movable groove inside the baffle two, a connecting column movably inserted into the movable groove, a movable seat slidably in the movable groove, a spring two located in the movable groove, and a magnetic suction member two fixed to the upper end of the movable seat. The lower end of the connecting column is fixed to the upper end of the movable seat, and the two ends of the spring two are respectively connected to the lower end of the movable seat and the inner wall of the movable groove.

[0018] Furthermore, multiple magnetic suction components are fixedly attached to the inner wall of the groove, and a buffer pad is fixedly attached to the inner wall of the groove. The buffer pad is located above the multiple magnetic suction components. Multiple fixing posts are also fixedly attached to the inner wall of the groove, and one end of each fixing post passes through the buffer pad and extends upward. A hanging ring is fixedly attached to the extended end of each fixing post, and a traction rope is attached to the hanging ring. The other end of the traction rope is connected to the lower end of the net.

[0019] Furthermore, the support part includes a base, a surrounding plate fixed to the upper end of the base, and two positioning parts fixed to the upper end of the base and symmetrical to each other. The positioning part includes a pad fixed to the upper end of the base, a frame fixed to the upper end of the base, a screw rod screwed into the frame, and pressure plates that slide on both sides with the inner wall of the frame and whose upper ends are rotatably connected to the lower end of the screw rod. The ball-dropping detection part includes a support rod fixed to the upper end of the base, a mounting frame positioned and connected to the outside of the support rod, and a magnetic attraction component fixed inside the mounting frame for magnetically attracting the steel ball.

[0020] Furthermore, it also includes a height adjustment part for adjusting the height of the baffle, and the height adjustment part includes a support base, a lifting seat slidably connected to the inner wall of the support base, two connecting frames fixed to one side of the lifting seat, a guide rod movably inserted into the lifting seat, a screw rod screwed into the lifting seat, and a motor fixed to the upper end of the lifting seat with its output shaft connected to the screw rod. One side of each of the two connecting frames is fixed to both sides of the baffle, both ends of the guide rod are fixed to the inner wall of the support base, and both ends of the screw rod are rotatably connected to the inner wall of the support base.

[0021] A method for detecting stress using a stress detector includes the following steps:

[0022] S1. Position the glass product using the positioning part, control the motor to drive the lifting seat to descend, so that the baffle is positioned above the glass product;

[0023] S2. The magnetic components inside the mounting bracket are de-energized, causing the magnetically attracted steel ball on the mounting bracket to fall. The falling steel ball passes through the ball drop opening and applies force to the glass product. The steel ball bounces upward on the glass product and passes through the ball drop opening. When the steel ball passes through the infrared sensing unit for the first time, the infrared sensing unit controls the electromagnet inside the baffle one to be de-energized. The energy storage and release component pushes the baffle two to move in the slide and block the ball drop opening.

[0024] S3. When the second baffle moves into the ball drop hole, the second spring pushes the movable seat, connecting column and plate to rise. The rise of the plate causes the net to rise. When the net rises, the traction rope in the groove applies traction force to the middle of the net, so that the net forms an inverted pyramid shape. The rebounding steel ball falls into the net and slides to the bottom of the net and is attracted and positioned by the magnetic suction component.

[0025] S4. Control the motor to drive the lifting seat and baffle to rise, so that the glass product that has been impacted by the steel ball is exposed. Control the positioning unit to cancel the positioning of the glass product and remove the glass product.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] (1) This scheme is equipped with an anti-stress accumulation component. When the infrared sensor detects the falling ball, it controls the electromagnet to be de-energized, and the energy storage and release component pushes the second baffle to move and block the ball falling opening. When the falling ball hits the glass and causes the first impact and bounces, the second baffle can physically isolate the rebounding steel ball from the glass, thereby ensuring the final failure state of the glass. By intercepting the rebounding ball, the energy superposition caused by subsequent uncontrolled impacts is completely eliminated, avoiding the degradation of the test from single impact to fatigue impact. The measured performance data (such as critical fracture height) will be more accurate and have better repeatability. This makes the test results fully meet the standard of single load and ensures the purity of the experimental data.

[0028] (2) This solution is equipped with a flexible ball receiving part and a net is set at the upper end of the second baffle. The net can absorb and dissipate the residual kinetic energy of the steel ball, prevent the ball from rebounding again after falling on the second baffle, and also prevent the ball from impacting the second baffle and causing the second baffle to deform; reduce noise, impact and equipment damage.

[0029] (3) This scheme is equipped with a lifting anti-sinking part. When the second baffle moves horizontally and blocks the ball landing opening, the second spring can push the movable seat, connecting column and plate to move upward. The upward movement of the plate can drive the net to move upward. The net actively moves upward to meet the baffle at the moment the second baffle moves into place, shortening the free time of the steel ball to bounce in the air. At the same time, after the net is lifted upward, the distance between the net and the second baffle is increased, so that the bottom of the net is suspended, avoiding the situation where the ball sinks into the net and touches the second baffle below.

[0030] (4) This scheme is equipped with a hanging ring and a traction rope. When the net rises, the traction rope can pull the center of the net and pull the net into a pyramid shape. When the ball falls on the net, it will roll along the slope to the lowest point, converting kinetic energy into downward rolling potential energy, thus completely eliminating the risk of flying out to the side. The area of ​​the net wall covering the ball gradually increases, and the frictional resistance also increases. This is a gentler and more stable buffering effect than simply hitting the flat net. At the same time, the magnetic suction in the groove can hold the ball that has rolled to the center, so that it can quickly come to a stop and be positioned in the predetermined position. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2This is a schematic diagram of the positioning part and stress accumulation prevention component of the present invention;

[0033] Figure 3 This is a schematic diagram of the electric actuator, protective pad, and infrared sensing part of the present invention;

[0034] Figure 4 This is a schematic diagram of the ball dropper, chute, pusher plate, and buffer pad of the present invention.

[0035] Figure 5 This is a schematic diagram of the rebound blocking part and the energy storage and release component of the present invention;

[0036] Figure 6 This is a schematic diagram of the groove and buffer pad structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the magnetic suction component, fixing post, lifting ring, and traction rope of the present invention;

[0038] Figure 8 This is a schematic diagram of the lifting and anti-sagging part structure of the present invention;

[0039] Figure 9 This is a schematic diagram of the second magnetic suction component of the present invention.

[0040] Explanation of the labels in the diagram:

[0041] 1. Support unit; 11. Base; 12. Enclosure panel one; 13. Positioning unit; 131. Pad; 132. Frame; 133. Screw; 134. Pressure plate; 2. Ball detection unit; 21. Support rod; 22. Mounting frame; 3. Height adjustment unit; 31. Support seat; 32. Guide rod; 33. Lead screw; 34. Lifting seat; 35. Motor; 4. Anti-stress accumulation component; 41. Connecting frame; 42. Baffle one; 421. Ball drop port; 422. Slide groove; 423. Protective cover; 43. Enclosure panel two; 44. Electric push rod; 45. Infrared sensing unit; 46. 47. Protective pad; 471. Push plate; 472. Buffer pad one; 48. Rebound blocking part; 483. Baffle two; 484. Magnetic suction plate; 485. Electromagnet; 49. Power storage and release component; 496. Slide seat; 497. Spring one; 498. Fixed seat; 5. Groove; 51. Buffer pad two; 52. Magnetic suction part one; 6. Flexible ball receiving part; 61. Plate body; 62. Slot; 63. Net body; 7. Lifting anti-sinking part; 71. Connecting column; 72. Movable seat; 73. Spring two; 74. Magnetic suction part two; 8. Fixed column; 9. Hanging ring; 10. Traction rope. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1 to 9 A stress testing instrument for glass products includes a support part 1 and a ball-falling detection part 2 connected to the upper end of the support part 1. The support part 1 includes a base 11, a surrounding plate 12 fixed to the upper end of the base 11, and two positioning parts 13 fixed to the upper end of the base 11 and symmetrical to each other. The positioning part 13 includes a pad 131 fixed to the upper end of the base 11, a frame 132 fixed to the upper end of the base 11, a screw 133 screwed into the frame 132, and a pressure plate 134 whose two sides are slidably connected to the inner wall of the frame 132 and whose upper end is rotatably connected to the lower end of the screw 133. The ball-falling detection part includes a support rod 21 fixed to the upper end of the base 11, a mounting frame 22 positioned and connected to the outside of the support rod 21, and a magnetic suction assembly fixed inside the mounting frame 22 for magnetically attracting a steel ball.

[0044] It also includes an anti-stress accumulation component 4, which includes a baffle 42, a second enclosure 43 fixed to the upper end of the baffle 42, a ball drop opening 421 opened inside the baffle 42, a slide groove 422 opened inside the baffle 42, a rebound blocking part 48 located inside the baffle 42, a force release component 49 connected inside the baffle 42 to push the rebound blocking part 48 to move, an electric push rod 44 fixed inside the baffle 42, a push plate 47 slidably connected to the inner wall of the ball drop opening 421 and fixed to the telescopic end of the electric push rod 44 on one side, and an infrared sensing part 45 fixed below the baffle 42; a buffer pad 471 is fixed to one side of the push plate 47.

[0045] The rebound blocking part 48 includes a second baffle 481 that slides in the slide groove 422, two magnetic plates 482 that are fixed to both sides of the second baffle 481, and two electromagnets 483 that are fixed inside the first baffle 42 and respectively attached to one side of the two magnetic plates 482.

[0046] The power storage and release assembly 49 includes a fixed seat 493 fixed inside the baffle 42, a slide 491 slidably connected in the slide groove 422, and a spring 492 whose two ends are respectively connected to the fixed seat 493 and the slide 491. One side of the slide 491 is in contact with one side of the baffle 481.

[0047] The upper and lower ends of the electric actuator 44 both penetrate the baffle 42 and extend outward. The lower ends of the electric actuator 44 and the infrared sensing part 45 are both fixed with protective pads 46. The upper end of the baffle 42 is fixed with a protective cover 423 for shielding the upper end of the electric actuator 44.

[0048] It also includes a height adjustment part 3 for adjusting the height of the baffle 42, and the height adjustment part 3 includes a support base 31, a lifting base 34 slidably connected to the inner wall of the support base 31, two connecting brackets 41 fixed to one side of the lifting base 34, a guide rod 32 movably inserted into the lifting base 34, a screw rod 33 screwed into the lifting base 34, and a motor 35 fixed to the upper end of the lifting base 34 with its output shaft connected to the screw rod 33. One side of each of the two connecting brackets 41 is fixed to both sides of the baffle 42, both ends of the guide rod 32 are fixed to the inner wall of the support base 31, and both ends of the screw rod 33 are rotatably connected to the inner wall of the support base 31.

[0049] By adopting the above technical solution, the glass product is placed between the pressure plate 134 and the pad 131. The screw 133 is rotated to drive the pressure plate 134 to descend, and the pressure plate 134 presses and positions the glass product. The motor 35 is controlled to drive the lead screw 33 to rotate, and the lead screw 33 rotates to drive the lifting seat 34 to descend. The descent of the lifting seat 34 drives the baffle 42 to descend through the connecting frame 41, so that the baffle 42 moves above the glass product. The protective pad 46 can prevent the electric push rod 44 and the infrared sensor 45 from directly contacting the glass product, thus protecting the glass product. The magnetic suction component (electromagnetic chuck) inside the mounting frame 22 is de-energized, and the steel ball attracted by the magnetic suction component falls freely under the action of gravity. The steel ball passes through the ball drop opening 421 and lands on the glass product. When the infrared sensor 45 detects the falling ball, the electromagnet 483 is de-energized, and the force generated by the spring 492 pushes the baffle 481 to move and move it into the ball drop opening 421. The system employs a shielding mechanism. When a steel ball impacts the glass, bounces upward, and falls again, the second baffle 481 physically isolates the rebounding ball from the glass, ensuring the glass's final breakage. By intercepting the rebounding ball, the energy superposition caused by subsequent uncontrolled impacts is completely eliminated, preventing the test from degenerating from a single impact to a fatigue impact. The measured performance data (such as critical fracture height) will be more accurate and repeatable, ensuring that the test results fully meet the standards for a single load and guaranteeing the purity of the experimental data. When it is necessary to retract the second baffle 481 into the first baffle 42 and open the ball drop opening 421, the control electric push rod 44 extends and drives the push plate 47 to slide in the slide groove 422. The push plate 47 pushes the second baffle 481 to move into the first baffle 42. The electromagnet 483 then magnetically attracts the magnetic plate 482, completing the reset and positioning of the second baffle 481, ready for the next test.

[0050] like Figure 5As shown, the upper end of the second baffle 481 is provided with a groove 5, and the upper end of the second baffle 481 is also connected to a flexible ball receiving part 6. The flexible ball receiving part 6 includes a plate 61 connected to the upper end of the second baffle 481, a slot 62 opened inside the plate 61, and a mesh 63 fixed to the inner wall of the slot 62.

[0051] By adopting the above technical solution, a net body 63 is provided at the upper end of the second baffle 481. When the steel ball hits the glass and bounces up and falls again, the second steel ball can land on the net body 63. The net body 63 can absorb and dissipate the residual kinetic energy of the steel ball, preventing the ball from bouncing again after landing on the second baffle 481. It also prevents the impact of the ball on the second baffle 481 from causing deformation of the second baffle 481, thereby reducing noise, impact and equipment damage.

[0052] like Figures 6-9 As shown, the baffle 481 is internally connected to a lifting anti-sinking part 7, which includes a movable groove inside the baffle 481, a connecting post 71 movably inserted into the movable groove, a movable seat 72 slidably connected in the movable groove, a spring 73 located in the movable groove, and a magnetic suction part 74 fixed to the upper end of the movable seat 72. The lower end of the connecting post 71 is fixed to the upper end of the movable seat 72, and the two ends of the spring 73 are respectively connected to the lower end of the movable seat 72 and the inner wall of the movable groove.

[0053] By adopting the above technical solution, when the second baffle 481 moves horizontally and blocks the ball landing opening 421, the second spring 73 can push the movable seat 72, the connecting column 71 and the plate 61 to move upward. The upward movement of the plate 61 can drive the net 63 to move upward. The net 63 actively moves upward to meet the baffle 481 at the moment it moves into position, shortening the free time of the steel ball's rebound flight in the air. At the same time, after the net 63 is raised, the distance between the net 63 and the second baffle 481 is increased, so that the bottom of the net is suspended in the air, preventing the ball from sinking into the net 63 and touching the lower baffle 481.

[0054] like Figures 6-8 As shown, a plurality of magnetic suction components 52 are fixedly attached to the inner wall of the groove 5, and a buffer pad 51 is fixedly attached to the inner wall of the groove 5. The buffer pad 51 is located above the plurality of magnetic suction components 52. A plurality of fixing posts 8 are also fixedly attached to the inner wall of the groove 5, and one end of the fixing posts 8 passes through the buffer pad 51 and extends upward. A hanging ring 9 is fixedly attached to the extended end of the fixing post 8. A traction rope 10 is attached to the hanging ring 9, and the other end of the traction rope 10 is connected to the lower end of the net body 63.

[0055] By adopting the above technical solution, when the net body 63 rises, the center of the net body 63 can be pulled by the traction rope 10, pulling the net body 63 into a pyramid shape. When the ball lands on the net body 63, it will roll along the slope to the lowest point, converting kinetic energy into downward rolling potential energy, completely eliminating the risk of flying out to the side. The area of ​​the net wall covering the ball gradually increases, and the frictional resistance also increases. This is a gentler and more stable buffering effect than simply hitting the flat net. At the same time, the magnetic suction component 52 in the groove 5 attracts the ball that rolls to the center, allowing it to quickly come to a stop and be positioned in a predetermined position. The magnetic suction component 52 is a magnet.

[0056] Instructions for use: S1. Position the glass product using the positioning part 13, control the motor 35 to drive the lifting seat 34 to descend, so that the baffle 42 is positioned above the glass product.

[0057] S2. The magnetic component inside the control mounting bracket 22 is de-energized, causing the magnetically attracted steel ball on the mounting bracket 22 to fall. The falling steel ball passes through the ball drop opening 421 and applies force to the glass product. The steel ball bounces upward on the glass product and passes through the ball drop opening 421. When the steel ball passes through the infrared sensing unit 45 for the first time, the infrared sensing unit 45 controls the electromagnet 483 inside the baffle 1 42 to be de-energized. The force release component 49 pushes the baffle 2 481 to move in the slide 422 and block the ball drop opening 421.

[0058] S3. When the second baffle 481 moves into the ball drop hole 421, the second spring 73 pushes the movable seat 72, the connecting column 71 and the plate 61 to rise. The rise of the plate 61 drives the net 63 to rise. When the net 63 rises, the traction rope 10 in the groove 5 applies traction force to the middle of the net 63, so that the net 63 forms an inverted pyramid shape. The rebounding steel ball falls into the net 63 and slides to the bottom of the net 63 and is attracted and positioned by the magnetic suction part 52.

[0059] S4. The control motor 35 drives the lifting seat 34 and the baffle 42 to rise, exposing the glass product that has been impacted by the steel ball. The control positioning unit 13 cancels the positioning of the glass product and removes the glass product.

[0060] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A stress testing instrument for glass products, comprising a support part and a falling ball detection part connected to the upper end of the support part, characterized in that: It also includes an anti-stress accumulation component, which includes a baffle 1, a surrounding plate 2 fixed to the upper end of the baffle 1, a ball drop opening opened inside the baffle 1, a sliding groove opened inside the baffle 1, a rebound blocking part located inside the baffle 1, a power storage and release component connected inside the baffle 1 to push the rebound blocking part to move, an electric push rod fixed to the baffle 1, a push plate slidably connected to the inner wall of the ball drop opening and fixed to the telescopic end of the electric push rod on one side, and an infrared sensing part fixed to the lower part of the baffle 1. The rebound blocking part includes a second baffle that slides in the groove, two magnetic plates fixed to both sides of the second baffle, and two electromagnets fixed inside the first baffle and respectively attached to one side of the two magnetic plates. The upper end of the second baffle is provided with a groove, and the upper end of the second baffle is also connected to a flexible ball receiving part. The flexible ball receiving part includes a plate body connected to the upper end of the second baffle, a slot opened inside the plate body, and a mesh body fixed to the inner wall of the slot. The power storage and release assembly includes a fixed seat fixed inside the baffle, a slide block slidably connected in the slide groove, and a spring with its two ends connected to the fixed seat and the slide block respectively. One side of the slide block is in contact with one side of the baffle. The upper and lower ends of the electric actuator both extend outward through the baffle. The lower end of the electric actuator and the lower end of the infrared sensor are both fixed with protective pads. A protective cover for shielding the upper end of the electric actuator is fixed to the upper end of the baffle. A buffer pad is fixed to one side of the push plate; The baffle two is internally connected to a lifting anti-sinking part, which includes a movable groove inside the baffle two, a connecting column movably inserted into the movable groove, a movable seat slidably in the movable groove, a spring two located in the movable groove, and a magnetic suction member two fixed to the upper end of the movable seat. The lower end of the connecting column is fixed to the upper end of the movable seat, and the two ends of the spring two are respectively connected to the lower end of the movable seat and the inner wall of the movable groove.

2. The stress testing instrument for glass products according to claim 1, characterized in that: Multiple magnetic components are fixedly attached to the inner wall of the groove, and a buffer pad is fixedly attached to the inner wall of the groove. The buffer pad is located above the multiple magnetic components. Multiple fixing posts are also fixedly attached to the inner wall of the groove, and one end of each fixing post passes through the buffer pad and extends upward. A hanging ring is fixedly attached to the extended end of each fixing post, and a traction rope is attached to the hanging ring. The other end of the traction rope is connected to the lower end of the net.

3. A stress testing instrument for glass products according to claim 2, characterized in that: The support unit includes a base, a surrounding plate fixed to the upper end of the base, and two symmetrical positioning parts fixed to the upper end of the base. Each positioning part includes a pad fixed to the upper end of the base, a frame fixed to the upper end of the base, a screw rod screwed into the frame, and pressure plates that slide on both sides against the inner wall of the frame and are rotatably connected to the lower end of the screw rod at their upper ends. The ball-dropping detection unit includes a support rod fixed to the upper end of the base, a mounting frame positioned and connected to the outside of the support rod, and a magnetic attraction assembly fixed inside the mounting frame for magnetically attracting the steel ball.

4. A stress testing instrument for glass products according to claim 3, characterized in that: It also includes a height adjustment part for adjusting the height of the baffle, and the height adjustment part includes a support base, a lifting seat slidably connected to the inner wall of the support base, two connecting frames fixed to one side of the lifting seat, a guide rod movably inserted into the lifting seat, a screw rod screwed into the lifting seat, and a motor fixed to the upper end of the lifting seat with its output shaft connected to the screw rod. One side of each of the two connecting frames is fixed to both sides of the baffle, both ends of the guide rod are fixed to the inner wall of the support base, and both ends of the screw rod are rotatably connected to the inner wall of the support base.

5. A method for testing with a stress testing instrument, the method using the stress testing instrument for glass products as described in claim 4, characterized in that: Includes the following steps: S1. Position the glass product using the positioning part, control the motor to drive the lifting seat to descend, so that the baffle is positioned above the glass product; S2. The magnetic components inside the mounting bracket are de-energized, causing the magnetically attracted steel ball on the mounting bracket to fall. The falling steel ball passes through the ball drop opening and applies force to the glass product. The steel ball bounces upward on the glass product and passes through the ball drop opening. When the steel ball passes through the infrared sensing unit for the first time, the infrared sensing unit controls the electromagnet inside the baffle one to be de-energized. The energy storage and release component pushes the baffle two to move in the slide and block the ball drop opening. S3. When the second baffle moves into the ball drop hole, the second spring pushes the movable seat, connecting column and plate to rise. The rise of the plate causes the net to rise. When the net rises, the traction rope in the groove applies traction force to the middle of the net, so that the net forms an inverted pyramid shape. The rebounding steel ball falls into the net and slides to the bottom of the net and is attracted and positioned by the magnetic suction component. S4. Control the motor to drive the lifting seat and baffle to rise, so that the glass product that has been impacted by the steel ball is exposed. Control the positioning unit to cancel the positioning of the glass product and remove the glass product.

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