An electric loading device and loading test method for glass extreme cold bending

Abstract

This invention discloses an electric loading device and loading test method for glass extreme cold bending, relating to the field of glass cold bending test technology. It includes a welded base and an extended loading device. A nut-lifting type lifter is installed inside the lower end of the welded base. The front side of the nut-lifting type lifter is connected to a support plate, and the rear end of the support plate is connected to linear rails on both the left and right sides. The linear rails are installed on the front and rear sides of the lower end of the welded base. A lead screw motor is installed on the top of the welded base, connected to a lead screw. A pressure sensor is installed at the bottom of the lead screw, with its lower end threaded into a ball joint. The bottom of the ball joint is connected to a loading head. This invention introduces an extended loading device, which, in conjunction with the loading head, forms a multi-loading point structure, making the cold bending loading test more stable. Simultaneously, the combination of the adjusting component and the extended component allows for flexible adjustment of the auxiliary loading point position and size, making the glass plate cold bending loading test more efficient and stable.

Description

Technical Field

[0001] This invention relates to the field of glass cold bending testing technology, specifically to an electric loading device and loading test method for glass extreme cold bending. Background Technology

[0002] With the continuous innovation and breakthroughs in modern architectural design, architects have an increasing demand for complex shapes such as curved surfaces, hyperboloids, and freeform surfaces, and the application of curved glass has become more and more common. However, the processing of these special-shaped glass is not only technically difficult, but also accompanied by high costs and long production cycles. In order to reduce production costs and shorten the cycle, cold bending glass technology has gradually attracted attention. Through computer-aided design and other means, the feasibility of cold bending glass technology is evaluated and the processing process is optimized.

[0003] Currently, traditional manual loading methods are difficult to achieve precise synchronous control of multi-point loading, which limits the accuracy of test data and makes it difficult to truly reflect the stress changes during the glass cold bending process. This results in insufficient loading synchronization and accuracy, affecting the glass cold bending test results.

[0004] Meanwhile, during the cold bending process of glass, there are various types of glass cold bending states, including long sides, cylindrical surfaces, and corners. Among them, when cold bending activities are carried out on long sides, cylindrical surfaces, and corners, it is generally necessary to set up recording points to meet the requirements of the glass cold bending activities. Corner cold bending generally uses one loading point. However, when cold bending activities are carried out on long sides and cylindrical surfaces, a large number of loading points are required. A single cold bending recording device generally has only one cold bending loading point, which leads to low adaptability of recording points when testing long sides and cylindrical surfaces cold bending. This requires a large number of cold bending devices, resulting in cumbersome and chaotic control issues. Summary of the Invention

[0005] The purpose of this invention is to provide an electric loading device and loading test method for glass extreme cold bending, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] On one hand, a glass extreme cold bending electric loading device is proposed, including a welded base body. A nut-lifting type lifting mechanism is installed inside the lower end of the welded base body. The front side of the nut-lifting type lifting mechanism is connected to a support plate. The rear end of the support plate is connected to linear rails on both the left and right sides. The linear rails are installed on the front and rear sides of the lower end of the welded base body. A lead screw motor is installed on the top of the welded base body. The lead screw motor is connected to a lead screw. A pressure sensor is installed at the bottom of the lead screw. The lower end of the pressure sensor is threadedly connected to a ball joint. The bottom of the ball joint is connected to a loading head. The device also includes an extended loading device located outside the loading head. The extended loading device includes a docking ring, which is connected to the outer side of the upper end of the loading head. Side plates are fixedly connected to both sides of the docking ring. A sleeve plate is fitted outside the side plates on both sides. A fixed frame is fixedly connected to the rear side of the docking ring. A servo motor is installed on the rear side of the fixed frame. The front side of the servo motor is connected to an adjustment component, which is installed on the upper end of the docking ring. An extension component is provided at the lower end of the sleeve plate.

[0008] The adjustment assembly includes a rotating shaft, which is longitudinally connected to the front side of the servo motor. A bevel gear is provided on the front side of the rotating shaft, and a gear disk is meshed with the lower end of the bevel gear. A rotating seat is provided at the bottom of the gear disk, and the bottom of the rotating seat is connected to the upper end of the docking ring. Fixed plates are fixed on both sides of the outer end of the rotating seat. Connecting arms are rotatably connected to the upper end of the fixed plates on both sides, and the end of the connecting arm away from the fixed plate is connected to the upper end of the sleeve plate.

[0009] Preferably, the extension component includes a spherical shaft embedded inside the sleeve plate. A micro motor is installed on the upper end of the spherical shaft, and the bottom of the spherical shaft is connected to the protective shell. An auxiliary loading structure is installed on the lower end of the protective shell, and the upper end of the auxiliary loading structure is connected to the bottom output end of the micro motor.

[0010] Preferably, the auxiliary loading structure includes a connecting shaft, which is connected to the bottom of the micro motor. The lower end of the connecting shaft is connected to a turntable. A guide groove is provided inside the turntable, and a docking shaft is inserted into the guide groove. A moving strip is connected to the upper end of the docking shaft. An arc-shaped plate is fixedly connected to the outside of the moving strip. The moving strip is slidably inserted into a limiting groove, which is located inside the lower end of a guide plate. The upper end of the guide plate is connected to the inside of the protective shell, and a rubber sleeve is installed on the outside of the arc-shaped plate.

[0011] Preferably, the docking ring is detachably installed on the outer side of the upper end of the loading head, and a limiting groove is formed on the top of the docking ring.

[0012] Preferably, the connecting arm is arranged in an inverted V-shape, and the two connecting arms on both sides are installed in opposite directions.

[0013] Preferably, the spherical shaft is movably embedded inside the sleeve plate, and the embedded position of the spherical shaft is horizontally opposite to the movable position of the bottom of the ball joint.

[0014] Preferably, the guide grooves are equidistantly spaced along the inner circumference of the turntable, and the guide grooves on each side are all arranged in an arc-shaped groove.

[0015] Preferably, the number of arc-shaped plates and rubber sleeves is the same, and both arc-shaped plates and rubber sleeves are circumferentially equidistantly distributed.

[0016] On the other hand, a loading test method for an electric loading device for extreme cold bending of glass is also proposed, including the following steps:

[0017] S1. Connect the welding base to the worktable, and determine the loading position and clamping position based on the size of the glass plate, the test requirements and the preset glass surface shape;

[0018] S2. Install the equipment at the loading and clamping positions of the glass plate. Taking a rectangular glass plate and cold bending of the long side as an example, the testing equipment is installed on the two long sides of the glass plate, and there are five loading points on each of the two long sides.

[0019] S3. Level the glass plate using a jack and displacement gauge;

[0020] S4. After leveling, the screw motor and screw drive are used to make the loading head abut against the loading point, so as to force the glass to undergo cold bending deformation. At the same time, with the extension loading device set on the outside of the loading head, the multi-contact loading of the long side cold bending can be met.

[0021] S5. When performing corner bending, the constraint device needs to be installed on the upper part of the support plate and used to constrain and align with the three corners of the glass plate. At this time, with the transmission assistance of the nut lifting type lifting machine, the height of the support plate can be adjusted at a uniform speed to match the corner bending height of the glass plate. At this time, the loading head can apply pressure to one side of the loading point through the transmission cooperation between the screw motor and the screw to achieve the corner bending activity.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This invention incorporates a docking ring, side plates, sleeve plates, a servo motor, and an adjustment assembly. When the servo motor operates, the rotating shaft within the adjustment assembly rotates. As the shaft rotates, a bevel gear positioned in front of it engages with a transmission gear. The gear rotates stably through the rotational docking effect of the limiting groove on the upper end of the rotating seat and the docking ring. The fixing plates on both sides of the outer end of the rotating seat, in conjunction with the rotation, push the connecting arm outwards towards the sleeve plate on the outer end of the side plate. This outward movement of the sleeve plate allows for flexible lateral adjustment of the auxiliary loading position of the extension assembly positioned below the sleeve plate, enabling diverse adjustments to the auxiliary loading point according to different situations.

[0024] The extended component allows the rubber sleeve to cooperate with the loading head to form a multi-point loading structure, ensuring stable loading during cold bending of the glass plate. Simultaneously, the spherical shaft enables physical alignment and adapts to changes in the glass surface during cold bending, improving the service life of the rubber sleeve. When the micro-motor rotates the bottom connecting shaft, the turntable rotates synchronously. The docking shaft, connected to the guide groove inside, can move the moving strip outwards through the rotation and shape of the guide groove. The moving strip is guided by the limiting groove at the lower end of the guide plate, allowing for linear outward movement. Thus, the moving strips on each side can simultaneously push the arc plate outwards, causing the rubber sleeves connected to the outside of the arc plate to unfold simultaneously, allowing for flexible adjustment of the auxiliary loading point dimensions to adapt to different auxiliary cold bending conditions. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the extended loading device of the present invention;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the extended loading device of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the extended component of the present invention;

[0030] Figure 6 This is a three-dimensional structural diagram of the auxiliary loading structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the breakdown structure of the auxiliary loading structure of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0033] In the diagram: Welded base-1, Nut lifting type lifting machine-2, Support plate-3, Linear rail-4, Screw motor-5, Screw-6, Pressure sensor-7, Ball joint-8, Loading head-9, Extended loading device-10, Connecting ring-101, Side plate-102, Sleeve plate-103, Fixed frame-104, Servo motor-105, Adjustment component-106, Rotating shaft-1061, Bevel gear-1062, Gear plate-1063, Rotating seat-1064 1065, Fixed plate, 1066, Connecting arm, 107, Extension component, 1071, Spherical shaft, 1072, Micro motor, 1073, Protective shell, 1074, Auxiliary loading structure, 10741, Connecting shaft, 10742, Turntable, 10743, Guide groove, 10744, Connecting shaft, 10745, Moving bar, 10746, Arc plate, 10747, Limiting groove, 10748, Guide plate, 10749. Detailed Implementation

[0034] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0035] Please see Figure 1 This invention provides an electric loading device and loading test method for glass extreme cold bending, including a welded base 1, a nut-lifting type lifting machine 2 is provided inside the lower end of the welded base 1, the front side of the nut-lifting type lifting machine 2 is connected to a support plate 3, the rear end of the support plate 3 is connected to a linear rail 4 at the left and right ends, and the linear rail 4 is installed on the front and rear sides of the lower end of the welded base 1, a lead screw motor 5 is installed on the top of the welded base 1, the lead screw motor 5 is connected to a lead screw 6, a pressure sensor 7 is provided at the bottom of the lead screw 6, the lower end of the pressure sensor 7 is threadedly connected to a ball joint 8, the bottom of the ball joint 8 is connected to a loading head 9, and an extended loading device 10 is provided outside the loading head 9.

[0036] Specifically, the upper end of the support plate 3 can be equipped with constraint devices for the corresponding long side, cylindrical surface and corner cold bending. After installation, the constraint points and loading points can be set according to the cold bending mode. In this way, when the glass plate is cold bent at the corner, after the three sides are constrained, the lead screw motor 5 can be run to drive the lead screw motor 5 and lead screw 6 to meet the downward movement of the bottom connected loading head 9, so that the loading head 9 abuts against the loading point of the glass plate and applies downward pressure to meet the corner cold bending of the glass plate. When the loading head 9 applies pressure, the ball joint 8 can achieve physical centering and adapt to the changes in the glass surface during the cold bending loading process to ensure the safety of the loading head 9.

[0037] When performing long-side or cylindrical cold bending activities, at least five loading points need to be set on the long side of the glass plate. The stable operation of the long-side or cylindrical cold bending activities can be achieved by simultaneously running the loading heads 9 at the five loading points.

[0038] Please see Figures 2-3 In this embodiment, the extended loading device 10 includes a docking ring 101, which is connected to the outer side of the upper end of the loading head 9. Side plates 102 are fixedly connected to both sides of the docking ring 101. A sleeve plate 103 is sleeved on the outside of the side plates 102, and the sleeve plate 103 can extend and retract along the outside of the side plates 102. A fixed frame 104 is fixedly connected to the rear side of the docking ring 101. A servo motor 105 is installed on the rear side of the fixed frame 104. The front side of the servo motor 105 is connected to the adjustment component 106, and the adjustment component 106 is installed on the upper end of the docking ring 101. An extension component 107 is provided at the lower end of the sleeve plate 103.

[0039] The docking ring 101 is detachably installed on the outer side of the upper end of the loading head 9, and a limiting groove is provided on the top of the docking ring 101. In this way, the docking ring 101 can be limited to rotate and dock with the adjustment component 106, ensuring the stable operation of the rotation adjustment process of the adjustment component 106.

[0040] Please see Figure 4 In this embodiment, the adjustment component 106 includes a rotating shaft 1061, which is longitudinally connected to the front side of the servo motor 105. A bevel gear 1062 is provided on the front side of the rotating shaft 1061. A gear disk 1063 is meshed with the lower end of the bevel gear 1062. A rotating seat 1064 is provided at the bottom of the gear disk 1063. The bottom of the rotating seat 1064 is connected to the limiting groove opened at the upper end of the docking ring 101. Fixing plates 1065 are fixed on both the front and rear sides of the rotating seat 1064. A connecting arm 1066 is rotatably connected to the upper end of both fixing plates 1065. The end of the connecting arm 1066 away from the fixing plate 1065 is rotatably connected to the upper end of the sleeve plate 103.

[0041] The connecting arm 1066 is arranged in an inverted V-shape, and the two connecting arms 1066 are installed in opposite directions. In this way, the push-pull transmission of the connecting arm 1066 can flexibly adjust the auxiliary loading position of the extension component 107.

[0042] Specifically, if it is necessary to adjust the loading point position of the auxiliary loading structure 1074 inside the expansion component 107, the servo motor 105 located on the rear side of the fixed frame 104 can be operated to rotate the rotating shaft 1061 connected to the front output end of the servo motor 105. As the rotating shaft 1061 rotates, the bevel gear 1062 connected to its front side will rotate synchronously, thereby meshing with the gear disk 1063 connected to the lower end of the transmission. At this time, the gear disk 1063 will cooperate with the rotating seat 1064 at the bottom and the limit opened at the upper end of the docking ring 101. The groove limits the rotational docking effect, and rotates. Through the rotation of the rotating seat 1064, the fixed plate 1065 located on its front and rear sides can rotate synchronously, thereby pushing the corresponding connecting arm 1066 at the upper end, so that the two connecting arms 1066 push synchronously in opposite directions. Thus, the sleeve plate 103 that is docked at one end of the two connecting arms 1066 respectively will cooperate with the guide of the side plate 102 to realize the lateral adjustment of the loading position of the auxiliary loading structure 1074, so that the loading position can be flexibly adjusted according to different loading conditions.

[0043] Meanwhile, the auxiliary loading structures 1074 on both sides can be combined with the loading head 9 to form a three-point loading structure, so that a cold bending recording device has three loading points, which greatly enhances its long side or cylindrical surface cold bending loading effect.

[0044] Please see Figures 5-8 In this embodiment, the extension component 107 includes a spherical shaft 1071, which is embedded inside the sleeve plate 103. A micro motor 1072 is installed on the upper end of the spherical shaft 1071, and the bottom of the spherical shaft 1071 is connected to the protective shell 1073. An auxiliary loading structure 1074 is installed on the lower end of the protective shell 1073, and the upper end of the auxiliary loading structure 1074 is connected to the bottom output end of the micro motor 1072.

[0045] The auxiliary loading structure 1074 includes a connecting shaft 10741, which is connected to the bottom of the micro motor 1072 and vertically inserted into the spherical shaft 1071. The lower end of the connecting shaft 10741 is connected to the turntable 10742. The turntable 10742 has guide grooves 10743 evenly spaced inside. A docking shaft 10744 is inserted into the guide groove 10743. A moving strip 10745 is connected to the upper end of the docking shaft 10744. An arc plate 10746 is fixedly connected to the outside of the moving strip 10745. The moving strip 10745 slides into the limiting groove 10747, which is located inside the lower end of the guide plate 10748. The upper end of the guide plate 10748 is connected to the inside of the protective shell 1073. A rubber sleeve 10749 is installed on the outside of the arc plate 10746.

[0046] The spherical shaft 1071 is movably embedded inside the sleeve plate 103, and the embedded position of the spherical shaft 1071 is horizontally opposite to the bottom movable position of the ball joint 8. In this way, in conjunction with the multi-directional rotation effect of the spherical shaft 1071, the extension component 107 can realize multi-directional loading activities.

[0047] Among them, the guide grooves 10743 are equally spaced along the inner circumference of the turntable 10742, and the shape of each guide groove 10743 is an arc-shaped groove, which ensures that the guide grooves 10743 can meet the outward adjustment and conduction activities when they rotate; the number of arc-shaped plates 10746 and rubber sleeves 10749 is the same, and the arc-shaped plates 10746 and rubber sleeves 10749 are equally spaced in the circumference, that is, the arc-shaped plates 10746 and rubber sleeves 10749 cooperate to meet the configuration of auxiliary loading points and the flexible adjustment of the loading point size.

[0048] Specifically, when the loading head 9 moves downward and abuts against the glass plate through the transmission of the lead screw motor 5 and lead screw 6, and performs the pressure cold bending activity, the auxiliary loading structure 1074 set at the lower end of the two side sleeves 103 can cooperate with the internal rubber sleeve 10749 to achieve lateral auxiliary expansion loading and abutment, thereby improving the loading effect of the loading head 9 on the glass plate.

[0049] Meanwhile, when the glass plate is cold-bent under the loading head 9 and the rubber sleeve 10749, the combination of the ball joint 8 and the spherical shaft 1071 can achieve physical alignment and adapt to the changes in the glass surface during the cold bending loading process, thus avoiding the loading head 9 and the rubber sleeve 10749 from being damaged by pressure loading.

[0050] If the contact area of ​​the auxiliary cold bending load needs to be adjusted to meet different auxiliary cold bending load conditions, the micro motor 1072 provided at the upper end of the spherical shaft 1071 can be driven to rotate the bottom connecting shaft 10741. As the connecting shaft 10741 rotates, the turntable 10742 docked at its bottom can rotate synchronously. Then, the docking shaft 10744 connected to the guide groove 10743 opened inside it can be pushed by the rotation of the guide groove 10743 and the shape of the opening. The moving bar 10745 can cooperate with the guide plate 1. The limiting groove 10747 at the lower end of 0748 guides the outward movement. In this way, the moving strips 10745 on each side will cooperate with the guide grooves 10743 on each side, the docking shaft 10744 and the limiting groove 10747 to push outward simultaneously. As a result, the arc plate 10746 docked to the outside of the moving strip 10745 will extend outward simultaneously. Furthermore, the rubber sleeve 10749 docked to the outer end of the arc plate 10746 can extend outward synchronously, so that the outward extending rubber sleeves 10749 on each side cooperate to realize the adjustment of the loading point abutment size, so as to realize the flexible adjustment of the auxiliary loading size according to the loading situation of different loading points.

[0051] A loading test method for an electric loading device for extreme cold bending of glass includes the following steps:

[0052] S1. Connect the welding base 1 to the worktable, and determine the loading position and clamping position based on the size of the glass plate, the test requirements and the preset glass surface shape.

[0053] S2. Install the equipment at the loading and clamping positions of the glass plate. Taking a rectangular glass plate and cold bending of the long side as an example, the testing equipment is installed on the two long sides of the glass plate, and there are five loading points on each of the two long sides.

[0054] S3. Level the glass plate using jacks and displacement gauges to ensure the stability of the glass plate during the cold bending process.

[0055] S4. After leveling, the transmission between the lead screw motor 5 and the lead screw 6 is used to make the loading head 9 abut against the loading point, so as to force the glass to undergo cold bending deformation. During the cold bending process, the ball joint 8 is used to achieve physical centering and adapt to the changes in the glass surface during the cold bending loading process. The pressure sensor 7 can be used to measure the load during the loading process. At the same time, the extended loading device 10 set on the outside of the loading head 9 can meet the multi-contact loading of the long side cold bending.

[0056] S5. When performing corner bending, the constraint device needs to be installed on the upper end of the support plate 3 and used to constrain and connect with the three corners of the glass plate. At this time, with the transmission assistance of the nut lifting type lifting machine 2, the height of the support plate 3 can be adjusted at a uniform speed to match the corner bending height of the glass plate. At this time, the loading head 9 can apply pressure to one side of the loading point through the transmission cooperation of the screw motor 5 and the screw 6 to meet the requirements of corner bending.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A glass extreme cold bending electric loading device, comprising a welded base (1), wherein a nut lifting type lifting machine (2) is provided inside the lower end of the welded base (1), the front side of the nut lifting type lifting machine (2) is connected to a support plate (3), the rear end of the support plate (3) is connected to a linear rail (4) at the left and right ends, and the linear rail (4) is installed on the front and rear sides of the lower end of the welded base (1), a screw motor (5) is installed on the top of the welded base (1), the screw motor (5) is connected to a screw (6), a pressure sensor (7) is provided at the bottom of the screw (6), the lower end of the pressure sensor (7) is threadedly connected to a ball joint (8), and the bottom of the ball joint (8) is connected to a loading head (9); Its features are: It also includes an extended loading device (10) located outside the loading head (9). The extended loading device (10) includes a docking ring (101) connected to the outer side of the upper end of the loading head (9). Side plates (102) are fixedly connected to both sides of the docking ring (101). A sleeve plate (103) is sleeved on the outside of the side plates (102) on both sides. A fixed frame (104) is fixedly connected to the rear side of the docking ring (101). A servo motor (105) is installed on the rear side of the fixed frame (104). The front side of the servo motor (105) is connected to the adjustment component (106), and the adjustment component (106) is installed on the upper end of the docking ring (101). An extension component (107) is provided at the lower end of the sleeve plate (103). The adjustment assembly (106) includes a rotating shaft (1061), which is longitudinally connected to the front side of the servo motor (105). A bevel gear (1062) is provided on the front side of the rotating shaft (1061). A gear disk (1063) is meshed with the lower end of the bevel gear (1062). A rotating seat (1064) is provided at the bottom of the gear disk (1063). The bottom of the rotating seat (1064) is connected to the upper end of the docking ring (101). Fixing plates (1065) are fixed on both sides of the outer end of the rotating seat (1064). Connecting arms (1066) are rotatably connected to the upper ends of the fixing plates (1065) on both sides. The end of the connecting arm (1066) away from the fixing plate (1065) is connected to the upper end of the sleeve plate (103). The expansion component (107) includes a spherical shaft (1071) embedded inside a sleeve plate (103). A micro motor (1072) is mounted on the upper end of the spherical shaft (1071), and the bottom of the spherical shaft (1071) is connected to a protective shell (1073). An auxiliary loading structure (1074) is mounted on the lower end of the protective shell (1073), and the upper end of the auxiliary loading structure (1074) is connected to the bottom output end of the micro motor (1072). The auxiliary loading structure (1074) includes a connecting shaft (10741), which is connected to the bottom of the micro motor (1072). The lower end of the connecting shaft (10741) is connected to the turntable (10742). A guide groove (10743) is provided inside the turntable (10742), and a docking shaft (10744) is inserted into the guide groove (10743). The upper end of the docking shaft (10744) is connected to a moving part. The movable strip (10745) is fixedly connected to an arc-shaped plate (10746) on its outer side. The movable strip (10745) slides into the limiting groove (10747), and the limiting groove (10747) is opened inside the lower end of the guide plate (10748). The upper end of the guide plate (10748) is connected to the inside of the protective shell (1073). The arc-shaped plate (10746) is equipped with a rubber sleeve (10749) on its outside.

2. The glass extreme cold bending electric loading device according to claim 1, characterized in that: The docking ring (101) is detachably installed on the outer side of the upper end of the loading head (9), and a limiting groove is provided on the top of the docking ring (101).

3. The glass extreme cold bending electric loading device according to claim 1, characterized in that: The connecting arm (1066) is arranged in an inverted V-shape, and the two connecting arms (1066) are installed in opposite directions.

4. The glass extreme cold bending electric loading device according to claim 1, characterized in that: The spherical shaft (1071) is movably embedded inside the sleeve plate (103), and the embedded position of the spherical shaft (1071) is horizontally opposite to the bottom movable position of the ball joint (8).

5. The glass extreme cold bending electric loading device according to claim 1, characterized in that: The guide grooves (10743) are equidistantly opened along the inner circumference of the turntable (10742), and the guide grooves (10743) on each side are all arranged in an arc-shaped groove.

6. The glass extreme cold bending electric loading device according to claim 1, characterized in that: The number of the arc-shaped plates (10746) and the rubber sleeves (10749) are the same, and the arc-shaped plates (10746) and the rubber sleeves (10749) are circumferentially equidistantly distributed.

7. A loading test method for a glass ultimate cold bending electric loading device, wherein the glass ultimate cold bending electric loading device is described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Connect the welding base (1) to the worktable, and determine the loading position and clamping position based on the size of the glass plate, the test requirements and the preset glass surface shape; S2. Install the equipment at the loading and clamping positions of the glass plate. Taking a rectangular glass plate and cold bending of the long side as an example, the testing equipment is installed on the two long sides of the glass plate, and there are five loading points on each of the two long sides. S3. Level the glass plate using a jack and displacement gauge; S4. After leveling, the screw motor (5) and screw (6) are used to drive the loading head (9) to the loading point, so as to force the glass cup to undergo cold bending deformation. At the same time, with the extension loading device (10) set on the outside of the loading head (9), the long side cold bending multi-contact loading can be satisfied. S5. When performing corner bending activities, the constraint device needs to be installed on the upper end of the support plate (3) and used to constrain and connect with the three corners of the glass plate. At this time, with the transmission assistance of the nut lifting type elevator (2), the height of the support plate (3) can be adjusted at a uniform speed to match the corner bending height of the glass plate. At this time, the loading head (9) can apply pressure to one side loading point through the transmission cooperation of the screw motor (5) and the screw (6) to meet the corner bending activity.

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