Automatic glue injection device for toughened hollow glass

CN224749387UActive Publication Date: 2026-09-15XINYU XUJIE GLASS CO LTD
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Patent Information

Application Number
CN202522229222.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-22
Publication Date
2026-09-15
Estimated Expiration
2035-10-22

AI Technical Summary

Technical Problem

胶体混合不均,影响密封性能,注胶压力不稳定,导致注胶不均或溢胶,在注胶过程中,由于胶体粘度大、流动性有限,以及注胶速度快慢不一,很容易在胶层内部卷入或残留空气,形成气泡

Benefits of technology

该钢化中空玻璃的自动注胶装置,通过设置的液压气缸驱动液压升降杆可带动伸缩块在支撑架内侧面升降工作,实现可调节两个连接杆使用位置,设置的两个密封盘可对储存筒的使用进行密封工作,设置的安装杆利用限位盘对活动绞龙限位安装,设置的活动绞龙跟随伸缩块的升降旋转对储存筒内胶体进行搅拌工作,设置的下压盘跟随伸缩块的升降对储存筒内胶体施压,实现匀速的将胶体下压通过过滤注胶网注胶至注胶模具内,设置的伸缩杆受到圆角定位板下压时压缩安装弹簧,对弹性垫施压重力,实现对注胶模具进行振动将内部多余气泡通过排气孔排出,实现注胶质量。

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Abstract

The utility model discloses an automatic glue injection device of toughened hollow glass relates to toughened hollow glass processing technical field, including L shape support plate, support frame, the one end of support frame is provided with glue injection auxiliary assembly, and hydraulic cylinder drive hydraulic lift lever can drive telescopic block to lift work on the inside face of support frame, realizes adjustable two connecting rod use position, and two sealing discs can carry out sealing work to the use of storage cylinder, and the installation rod utilizes spacing disc to limit installation to movable screw conveyor, and movable screw conveyor follows the lift rotation of telescopic block and carries out stirring work to the colloid in storage cylinder, and the lift of lower pressure disc follows telescopic block and presses the colloid in storage cylinder, realizes the even speed and press through the filter glue injection net glue injection to glue injection mould, and telescopic link is compressed installation spring when receiving the lower pressure of round corner positioning plate, and the pressure gravity of elastic pad is realized, realizes the vibration of glue injection mould and exports through the exhaust hole to the inside excess air bubble, realizes glue injection quality.
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Description

Technical Field

[0001] This utility model relates to the field of tempered insulating glass processing technology, and in particular to an automatic glue-applying device for tempered insulating glass. Background Technology

[0002] Insulating glass, as an excellent material for heat insulation, sound insulation, and energy saving, is widely used in modern building doors, windows, curtain walls, and other fields. One of its core manufacturing processes involves forming an air gap between two or more glass substrates using spacers, and then double-sealing the edges with butyl sealant and polysulfide / silicone sealant to ensure the airtightness and long-term stability of the air gap. The quality of the second sealant application (usually polysulfide or silicone sealant) directly determines the service life and performance of the insulating glass. Traditional sealant application processes mainly rely on manual operation or semi-automated equipment, which presents several prominent problems. Uneven mixing of the adhesive affects sealing performance; unstable injection pressure leads to uneven injection or overflow. During the injection process, due to the high viscosity and limited fluidity of the adhesive, as well as inconsistent injection speeds, air can easily be trapped or remain within the adhesive layer, forming bubbles. These bubbles become stress concentration points, compromising the integrity and density of the adhesive layer. Manual operation is not only labor-intensive and inefficient, but its precision and stability are also highly susceptible to subjective factors such as worker skill level and fatigue, resulting in variations in injection quality between different batches and even between different edges of the same piece of glass. This makes it difficult to meet the demands of modern large-scale, high-standard production. Existing automated equipment often has a relatively fixed structure, poor adaptability to injection tanks of different specifications and depths, and inconvenient adjustments. Furthermore, the complex structure also leads to a higher failure rate and maintenance costs.

[0003] To address the above issues, it is necessary to design an automatic glue-applying device for tempered insulating glass to overcome these problems. Summary of the Invention

[0004] The main objective of this invention is to provide an automatic glue-applying device for tempered insulating glass, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An automatic glue-applying device for tempered insulating glass includes an L-shaped support plate and a support frame, wherein one end of the support frame is provided with a glue-applying auxiliary component. The glue injection auxiliary component includes a hydraulic cylinder disposed on the inner side of the support frame. A hydraulic lifting rod is disposed at the output end of the hydraulic cylinder. A telescopic block is sleeved on the outer wall of the hydraulic lifting rod. A fixed frame is installed at the bottom of the hydraulic cylinder. A fixed ring is installed at the end of the fixed frame away from the support frame. Storage cylinders are sleeved on the inner sides of both fixed rings. A connecting rod is connected to the end of each telescopic block away from the hydraulic lifting rod. A sealing plate is installed at one end of each of the two connecting rods. An installation rod is connected to the bottom of the sealing plate. A limit plate is sleeved on one end of the outer wall of each of the two installation rods. A movable auger is connected to the bottom of each installation rod via a movable rod. A rounded corner positioning plate is installed at the bottom of each of the movable auger via a fixed rod. A telescopic rod is connected to the dead corner at the bottom of each of the rounded corner positioning plates. An installation spring is installed on the outer wall of each of the four telescopic rods. An elastic pad is connected to the bottom of each telescopic rod. A glue injection mold is installed at the bottom of the elastic pad. Vent holes are opened at both ends of the top of the glue injection mold.

[0006] In a preferred embodiment of this utility model, the hydraulic cylinder is rotatably connected to the hydraulic lifting rod, the telescopic block is sleeved on one end of the outer wall of the hydraulic lifting rod, and the telescopic block is rotatably connected to the two connecting rods.

[0007] As a preferred embodiment of this utility model, the connecting rod is rotatably connected to the sealing disc, the sealing disc is rotatably connected to the two mounting rods, the limiting disc is fixedly sleeved on the outer wall of the mounting rod, the mounting rod is rotatably connected to the movable auger through a movable rod, and the movable auger is threadedly fixedly connected to the lower pressure plate through a reinforcing rod.

[0008] As a preferred embodiment of this utility model, a limit spring is fixedly connected to one end of the top of the two connecting rods near the telescopic block, and a limit block is installed at one end of the two limit springs away from the connecting rods. The limit block is threadedly fixedly connected to the top of the support frame.

[0009] As a preferred embodiment of this utility model, the top of the rounded corner positioning plate is fixedly connected to the bottom of the storage cylinder, and a filter glue injection screen is installed on the bottom of the inner side of the storage cylinder. The rounded corner positioning plate is rotatably connected to the four telescopic rods.

[0010] As a preferred embodiment of this utility model, the telescopic rod is fixedly connected to the mounting spring, the bottom of the telescopic rod is rotatably connected to the elastic pad, and the elastic pad is fixedly connected to the injection mold.

[0011] Beneficial effects Compared with the prior art, the present invention has the following beneficial effects: This automatic glue-filling device for tempered insulating glass uses a hydraulic cylinder to drive a hydraulic lifting rod, which in turn moves a telescopic block up and down within the support frame. This allows for adjustment of the positions of two connecting rods. Two sealing discs seal the storage cylinder. An installation rod uses a limit disc to limit the movable auger. The movable auger rotates and moves with the telescopic block, stirring the glue in the storage cylinder. A pressure plate, also moving with the telescopic block, applies pressure to the glue in the storage cylinder, uniformly pressing the glue down through the filter and into the glue-filling mold. When the telescopic rod is pressed down by the rounded corner positioning plate, it compresses the installation spring, applying gravity to the elastic pad. This vibrates the glue-filling mold, expelling excess air bubbles through the vent, ensuring high-quality glue filling. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the telescopic block installation structure of this utility model; Figure 3 This is a schematic diagram of the installation structure of the movable auger and the lower pressure plate of this utility model; Figure 4 This is a schematic diagram of the installation structure of the injection mold of this utility model.

[0013] In the diagram: 1. L-shaped support plate; 2. Support frame; 3. Hydraulic cylinder; 4. Hydraulic lifting rod; 5. Telescopic block; 6. Connecting rod; 7. Sealing disc; 8. Limiting spring; 9. Limiting block; 10. Fixing frame; 11. Fixing ring; 12. Storage cylinder; 13. Mounting rod; 14. Limiting disc; 15. Movable auger; 16. Lower pressure plate; 17. Rounded corner positioning plate; 18. Filter glue injection screen; 19. Telescopic rod; 20. Mounting spring; 21. Elastic pad; 22. Glue injection mold; 23. Vent hole. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figures 1-4 As shown, an automatic glue-applying device for tempered insulating glass includes an L-shaped support plate 1 and a support frame 2, with a glue-applying auxiliary component provided at one end of the support frame 2. The glue injection auxiliary component includes a hydraulic cylinder 3 disposed on the inner side of the support frame 2. A hydraulic lifting rod 4 is disposed at the output end of the hydraulic cylinder 3. A telescopic block 5 is sleeved on the outer wall of the hydraulic lifting rod 4. A fixed frame 10 is installed at the bottom of the hydraulic cylinder 3. A fixed ring 11 is installed at the end of the fixed frame 10 away from the support frame 2. A storage cylinder 12 is sleeved on the inner side of each of the two fixed rings 11. A connecting rod 6 is connected to the end of the telescopic block 5 away from the hydraulic lifting rod 4. A sealing plate 7 is installed at one end of each of the two connecting rods 6. An installation rod 13 is connected to the bottom of the sealing plate 7. A limit plate 14 is sleeved on one end of the outer wall of each of the two installation rods 13. A movable auger 15 is connected to the bottom of the installation rod 13 through a movable rod. A pressure plate 16 is installed at the bottom of the movable auger 15 through a fixed rod. Hydraulic cylinder 3 is rotatably connected to hydraulic lifting rod 4. Telescopic block 5 is sleeved on one end of the outer wall of hydraulic lifting rod 4. Telescopic block 5 is rotatably connected to two connecting rods 6. Connecting rod 6 is rotatably connected to sealing disc 7. Sealing disc 7 is rotatably connected to two mounting rods 13. Limiting disc 14 is fixedly sleeved on the outer wall of mounting rod 13. Mounting rod 13 is rotatably connected to movable auger 15 through movable rod. Movable auger 15 is threadedly fixedly connected to lower pressure plate 16 through reinforcing rod. Limiting spring 8 is fixedly connected to the top of the two connecting rods 6 near telescopic block 5. Limiting block 9 is installed at the end of the two limiting spring 8 away from connecting rod 6. Limiting block 9 is threadedly fixedly connected to the top of support frame 2. Specifically, in this embodiment, it consists of an L-shaped support plate 1 and a support frame 2 vertically fixed thereon. The L-shaped support plate 1 provides the installation foundation for the entire device, ensuring its stability during operation. The support frame 2 serves as the motion guide and load-bearing body for the glue injection actuator. A hydraulic cylinder 3 is fixedly installed on the inner top of the support frame 2, acting as the vertical power source for the entire device. The output end of the hydraulic cylinder 3 is connected to a hydraulic lifting rod 4. The hydraulic lifting rod 4 and the hydraulic cylinder 3 are rotatably connected, allowing for slight angular deviations during installation and operation to prevent jamming. A telescopic block 5 is sleeved on the outer wall of the hydraulic lifting rod 4. The telescopic block 5 and the hydraulic lifting rod 4 are connected by a key or spline, ensuring that the rotational movement of the hydraulic lifting rod 4 will not be transmitted to the telescopic block 5, but the axial lifting movement can be transmitted synchronously. The two sides of the telescopic block 5 slide against the inner side of the support frame 2, serving a guiding and stabilizing function. Two connecting rods 6 are symmetrically connected to the bottom sides of the telescopic block 5 via pivots. The other end of the connecting rod 6 is also connected to the sealing disc 7 via a pivot, ensuring that the sealing disc 7 remains horizontal during lifting and lowering, achieving reliable sealing. A limit spring 8 is fixedly connected to the top of the connecting rod 6 near the end of the telescopic block 5. A limit block 9 is installed at the other end of the limit spring 8. The limit block 9 is fixedly connected to the top of the support frame 2 by bolts. When the telescopic block 5 descends, the limit spring 8 is stretched, providing downward pulling force to ensure sufficient sealing pressure between the sealing disc 7 and the storage cylinder 12, while also serving as a sealing mechanism. For buffering, two parallel mounting rods 13 are fixedly connected to the bottom center of the sealing disc 7. A limit plate 14 is fixedly sleeved on the outer wall of the mounting rod 13 to limit the axial position of the movable auger 15. The bottom of the mounting rod 13 is rotatably connected to the movable auger 15 through a movable rod. The rotational power of the movable auger 15 is driven by the lifting and lowering of the telescopic block 5 to lift and lower the movable auger 15 and thus rotate. The bottom of the movable auger 15 is fixedly connected to a lower pressure plate 16 through a reinforcing rod thread. The diameter of the lower pressure plate 16 is slightly smaller than the inner diameter of the storage cylinder 12 to ensure that it can slide freely up and down inside the cylinder and effectively apply pressure to the colloid.

[0016] Both fixed rings 11 are fitted with rounded corner positioning plates 17 at their bottoms. The dead corners at the bottom of the rounded corner positioning plates 17 are connected to telescopic rods 19. The outer walls of the four telescopic rods 19 are fitted with mounting springs 20. The bottom of the telescopic rods 19 is connected to an elastic pad 21. The bottom of the elastic pad 21 is fitted with an injection mold 22. Both ends of the top of the injection mold 22 are provided with vent holes 23. The top of the rounded corner positioning plate 17 is fixedly connected to the bottom of the storage cylinder 12. The bottom of the inner side of the storage cylinder 12 is equipped with a filter glue injection screen 18. The rounded corner positioning plate 17 is rotatably connected to four telescopic rods 19. The telescopic rods 19 are fixedly connected to the mounting springs 20. The bottom of the telescopic rods 19 is rotatably connected to the elastic pads 21. The elastic pads 21 are fixedly connected to the glue injection mold 22. Specifically, in this embodiment, a fixing bracket 10 is installed on the side of the cylinder body of the hydraulic cylinder 3. Two fixing rings 11 are installed at the other end of the fixing bracket 10. Two storage cylinders 12 are detachably fitted into the fixing rings 11 for easy replacement and cleaning. The bottom of the storage cylinder 12 is funnel-shaped, with a glue outlet at its lowest point and a filter glue injection screen 18 installed thereon. A rounded corner positioning plate 17 is fixedly connected to the bottom of the storage cylinder 12. The rounded corner positioning plate 17 is not only used to connect the vibration component below, but its rounded corner design at the bottom also facilitates initial alignment with the glass surface or positioning fixture when the equipment is lowered. Telescopic rods 19 are connected to four positions at the bottom of the rounded corner positioning plate 17. The telescopic rods 19 are rotatably connected to the rounded corner positioning plate 17, allowing for slight swaying. Each telescopic rod 19 has a mounting spring 20 fitted on its outer wall. The upper end of the mounting spring 20 abuts against the rounded corner positioning plate 17, and the lower end abuts against a retaining ring fixed to the telescopic rod 19 or is directly connected to an elastic pad. The bottom of all telescopic rods 19 is connected to an elastic pad 21. The elastic pad 21 is made of highly elastic rubber or polyurethane material and is used to transmit vibration and protect the components below. A glue injection mold 22 is fixedly installed at the bottom of the elastic pad 21. The shape of the glue injection mold 22 matches the spacer groove of the insulating glass, and vent holes 23 are opened at both ends of its top to expel air bubbles generated during glue injection.

[0017] In the initial state, the hydraulic cylinder 3 is retracted, and the telescopic block 5 is in the high position. The operator injects the mixed sealant into the two storage cylinders 12, places the insulating glass assembly to be sealed on the worktable below the sealant injection mold 22, and adjusts its position so that the sealant injection mold 22 is aligned with the glass spacer groove. The hydraulic cylinder 3 is activated, driving the hydraulic lifting rod 4 and the telescopic block 5 to descend as a whole. The connecting rod 6 drives the sealing disc 7 to move downward until it is tightly pressed against the top opening of the storage cylinder 12, forming a seal. During this process, the limit spring 8 is stretched, providing a continuous sealing pre-tightening force. The telescopic block 5 continues to descend, driving the movable auger 15 and the lower pressure plate 16 into the sealant body of the storage cylinder 12. At this time, the drive motor is started, causing the movable auger 15 to rotate at high speed, continuously stirring the colloid and preventing it from settling. At the same time, the hydraulic system provides constant downward pressure, squeezing the colloid downward at a uniform and stable speed through the pressure plate 16. After being filtered by the glue injection screen 18, the colloid is injected into the glass spacer through the glue injection mold 22. When the working head descends to the point where the rounded corner positioning plate 17 contacts the glass surface, the descent is hindered. The remaining pressure provided by the hydraulic system forces the telescopic rod 19 to retract upward, forcefully compressing the mounting spring 20. The compressed spring generates high-frequency vibration, which is transmitted to the glue injection mold 22 and the colloid inside through the elastic pad 21, causing air bubbles to rise and be discharged from the vent hole 23, thereby obtaining a dense glue layer. After the glue injection is completed, the hydraulic cylinder 3 works in reverse, driving the entire actuator to rise. The sealing plate 7 separates from the storage cylinder 12, the movable auger 15 and the pressure plate 16 detach from the colloid, and the vibration component resets under the elastic force of the mounting spring 20. The equipment returns to the initial standby state, waiting for the next work cycle.

[0018] It should be noted that this utility model is an automatic glue injection device for tempered insulating glass. When in use, before the equipment is started, the hydraulic cylinder 3 is in a retracted state, which drives the hydraulic lifting rod 4 and the telescopic block 5 to rise to the highest position. At this time, the connecting rod 6 is pulled upward, so that the sealing plate 7 is separated from the top opening of the storage cylinder 12, providing space for adding material or cleaning. At the same time, the movable auger 15 and the lower pressure plate 16 at the bottom of the mounting rod 13 are also located above the storage cylinder 12 and do not contact the glue inside the cylinder. The rounded corner positioning plate 17, the telescopic rod 19 and the elastic pad 21 at the bottom are in a naturally extended low position under the elastic force of the mounting spring 20. The glue injection mold 22 maintains a certain distance or just contacts the glass groove to be processed. The operator injects the pre-mixed two-component sealant or single-component glue into the cylinder through the opening at the top of the storage cylinder 12. Hydraulic cylinder 3 is activated, driving hydraulic lifting rod 4 to extend downwards smoothly. Hydraulic lifting rod 4 drives telescopic block 5 to move downwards along the inner side of support frame 2. Telescopic block 5, through connecting rods 6 on both sides, pulls sealing disc 7 to descend synchronously. When the bottom surface of sealing disc 7 is tightly pressed against the top end face of storage cylinder 12, a reliable seal is formed, preventing the colloid from overflowing during subsequent pressurization. At this time, the limiting spring 8 at the top of connecting rod 6 is slightly stretched, playing a role in buffering and maintaining sealing pressure. As it continues to descend, mounting rod 13 drives movable auger 15 and lower pressure plate 16 into the storage cylinder 12 and immerses them in the colloid. When movable auger 15 is completely immersed in the colloid, it drives movable auger 15 to rotate at high speed. The rotating auger continuously and thoroughly stirs the colloid in storage cylinder 12, preventing the colloid from settling or separating, ensuring its uniformity and fluidity. Hydraulic cylinder 3 continues to provide stable downward pressure, transmitting the force to lower pressure plate 16 through telescopic block 5 and connecting rod 6. The lower pressure plate 16 acts like a piston, applying a continuous and constant vertical pressure to the colloid below. Under this pressure, the colloid is evenly squeezed downwards and flows through the filter screen 18 at the bottom of the storage cylinder 12. This filter screen removes any impurities that may be present in the colloid, ensuring the purity of the colloid. Subsequently, the colloid is injected into the colloid injection mold 22 connected to the bottom of the storage cylinder 12 and fills the spacer grooves in the glass along the cavity of the mold. As the entire working head continues to descend, the bottom of the rounded corner positioning plate 17 will contact the glass substrate to be processed or the worktable surface, and it will be unable to descend further. At this time, the hydraulic system is still providing a small downward pressure, which will force the telescopic rod 19 above the rounded corner positioning plate 17 to move upward, thereby strongly compressing the mounting spring 20. The compressed mounting spring 20 stores elastic potential energy and generates high-frequency reciprocating compression and release under the continuous pressure of the system, forming a stable and strong mechanical vibration. This vibration is directly and efficiently transmitted to the injection mold 22 through the telescopic rod 19 and the elastic pad 21. The vibration of the injection mold 22 causes the filling colloid to vibrate as well, causing the tiny air bubbles trapped inside the colloid to rise due to the disturbance and eventually be discharged through the pre-set vent hole 23 at the top of the injection mold 22, thereby forming a dense, bubble-free, high-quality colloid layer. After the pressure holding is completed, the hydraulic cylinder 3 works in reverse, driving the hydraulic lifting rod 4 and the telescopic block 5 to rise upward. The sealing plate 7 first separates from the storage cylinder 12, releasing the seal. Subsequently, the movable auger 15 and the lower pressure plate 16 are pulled out of the colloid. At the same time, the vibration mechanism at the bottom, due to the loss of downward pressure, resets under the elastic force of the mounting spring 20, and the vibration stops.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic glue injection device for toughening hollow glass, comprising an L-shaped support plate (1) and a support frame (2), characterized in that: One end of the support frame (2) is provided with a glue injection auxiliary component; The glue injection auxiliary component includes a hydraulic cylinder (3) disposed on the inner side of the support frame (2). The output end of the hydraulic cylinder (3) is provided with a hydraulic lifting rod (4). The outer wall of the hydraulic lifting rod (4) is fitted with a telescopic block (5). A fixing frame (10) is installed at the bottom of the hydraulic cylinder (3). A fixing ring (11) is installed at the end of the fixing frame (10) away from the support frame (2). A storage cylinder (12) is fitted on the inner side of both fixing rings (11). A connecting rod (6) is connected to the end of the telescopic block (5) away from the hydraulic lifting rod (4). A sealing plate (7) is installed at one end of both connecting rods (6). An installation rod (13) is connected to the bottom of the sealing plate (7). A limit plate (14) is fitted on one end of the outer wall of both installation rods (13). A movable auger (15) is connected to the bottom of the installation rod (13) through a movable rod. A pressure plate (16) is installed at the bottom of the movable auger (15) through a fixed rod.

2. The automatic glue-applying device for tempered insulating glass according to claim 1, characterized in that: Both of the two fixed rings (11) are equipped with rounded corner positioning plates (17) at their bottoms. The dead corners at the bottom of the rounded corner positioning plates (17) are connected to telescopic rods (19). The outer walls of the four telescopic rods (19) are equipped with mounting springs (20). The bottom of the telescopic rods (19) is connected to an elastic pad (21). The bottom of the elastic pad (21) is equipped with a glue injection mold (22). The top two ends of the glue injection mold (22) are provided with vent holes (23).

3. The automatic glue-applying device for tempered insulating glass according to claim 1, characterized in that: The hydraulic cylinder (3) is rotatably connected to the hydraulic lifting rod (4), the telescopic block (5) is sleeved on one end of the outer wall of the hydraulic lifting rod (4), and the telescopic block (5) is rotatably connected to the two connecting rods (6).

4. The automatic glue-applying device for tempered insulating glass according to claim 1, characterized in that: The connecting rod (6) is rotatably connected to the sealing disc (7), the sealing disc (7) is rotatably connected to the two mounting rods (13), the limiting disc (14) is fixedly sleeved on the outer wall of the mounting rod (13), the mounting rod (13) is rotatably connected to the movable auger (15) through the movable rod, and the movable auger (15) is threadedly fixedly connected to the lower pressure plate (16) through the reinforcing rod.

5. An automatic glue-applying device for tempered insulating glass according to claim 1, characterized in that: Limiting springs (8) are fixedly connected to the top of the two connecting rods (6) near the telescopic block (5), and limiting blocks (9) are installed at the ends of the two limiting springs (8) away from the connecting rods (6). The limiting blocks (9) are threadedly fixedly connected to the top of the support frame (2).

6. An automatic glue-applying device for tempered insulating glass according to claim 2, characterized in that: The top of the rounded corner positioning plate (17) is fixedly connected to the bottom of the storage cylinder (12), and a filter glue injection screen (18) is installed on the bottom of the inner side of the storage cylinder (12). The rounded corner positioning plate (17) is rotatably connected to the four telescopic rods (19).

7. An automatic glue-applying device for tempered insulating glass according to claim 2, characterized in that: The telescopic rod (19) is fixedly connected to the mounting spring (20), the bottom of the telescopic rod (19) is rotatably connected to the elastic pad (21), and the elastic pad (21) is fixedly connected to the injection mold (22).