Fire door composite edge sealing device

Abstract

The application discloses a fireproof door composite edge sealing device and relates to the field of fireproof door welding and edge sealing. The device comprises a supporting plate, supporting feet fixedly connected to the two ends of the supporting plate, a plurality of connecting seats equidistantly arranged at the top ends of the two supporting feet, connecting plates commonly arranged in the two connecting seats, a displacement mechanism commonly arranged at the top ends of the two connecting plates, a lifter arranged at one end of the displacement mechanism, a welder arranged at the end of the lifter away from the displacement mechanism, a fixing device fixedly connected to the middle of the top end of the supporting plate, and two displacement plates, two limiting plates, two limiting rods and two positioning mechanisms. The fixing device is provided with a gas cylinder, displacement plates, limiting plates and positioning mechanisms, which can realize efficient and accurate limiting of fireproof doors with different sizes, improve the quality and efficiency of edge sealing operation, ensure the tightness and stability of the edge sealing of the fireproof door, and provide reliable guarantee for the quality of the fireproof door.

Description

Technical Field

[0001] This invention relates to the field of fire door welding and sealing technology, specifically to a composite sealing device for fire doors. Background Technology

[0002] Composite edge sealing of fire doors refers to the process of adding fire-resistant and heat-insulating materials to the edges of the door leaf through a composite process to form a sealed structure. It is a key process to improve the overall performance of fire doors.

[0003] In the existing production process of composite edge sealing for fire doors, the metal frame and fireproof material are usually fixed with clips, rivets, or welding to achieve a stable connection with the door leaf. In specific operation, the welding process is divided into two key steps: first, spot welding is used to fix the distribution of weld points and initially position the relative position of the metal frame and the door leaf; then, full welding is used to continuously weld the key joints to ensure that the weld strength meets the design requirements. At the same time, non-destructive testing technology is used to strictly check for defects such as cracks and incomplete welds. However, in the actual welding edge sealing process, it is necessary to limit the metal frame, fireproof material, and door leaf in three-dimensional space to prevent displacement or deformation caused by welding thermal stress. In the existing technology, the traditional clamping system is mainly designed for standard-sized fire doors. When facing non-standard or irregular-sized doors, there are problems with poor adaptability of the limiting mechanism and insufficient positioning accuracy, which increases the risk of material misalignment during welding, ultimately affecting the sealing performance and overall strength of the edge sealing structure, and may even reduce the fire resistance rating of the fire door. Summary of the Invention

[0004] The purpose of this invention is to provide a composite edge sealing device for fire doors, so as to solve the problems of poor adaptability and insufficient positioning accuracy of the limiting mechanism in the prior art, which affect the sealing performance and overall strength of the edge sealing structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fire door composite edge sealing device, comprising a support plate, both ends of which are fixedly connected to support feet, and multiple connecting seats are installed at equal distances at the top of the two support feet, both connecting seats on both sides are commonly installed with connecting plates, and the top of the two connecting plates are commonly installed with a displacement mechanism, one end of the displacement mechanism is equipped with a lifter, the end of the lifter away from the displacement mechanism is equipped with a welder, and a fixing device is fixedly connected to the middle of the top of the support plate; The fixing device includes a displacement plate, a limiting plate, a limiting rod, a cylinder, and a positioning mechanism. Two limiting plates, two limiting rods, and two positioning mechanisms are provided. The two limiting plates are fixedly connected to the two sides of the bottom end of the displacement plate, the two limiting rods are fixedly connected to the opposite surfaces of the two limiting plates, the two positioning mechanisms are movably inserted and connected to the outer surfaces of the two limiting rods, and the cylinder is fixedly connected to the bottom end of the displacement plate.

[0006] Furthermore, the bottom end of the cylinder is fixedly connected to the top center of the support plate, and the two limiting plates are respectively movably inserted into the two first limiting grooves. Both ends of the limiting plates are set as inclined structures.

[0007] Furthermore, the positioning mechanism includes a bracket, a second limiting groove, a mounting groove, a pressing mechanism, and a first spring. The second limiting groove is opened at one end of the bracket. There are two mounting grooves and two pressing mechanisms, and the two pressing mechanisms are movably inserted into the second limiting groove. The first spring is fixedly connected between the two pressing mechanisms. The two mounting grooves are opened at the middle of one end of the bracket. The bracket is fixedly connected to the top of the support plate.

[0008] Furthermore, the limiting rod is movably inserted into the two mounting slots.

[0009] Furthermore, the clamping mechanism includes a support rod, a clamping seat, a sliding block, a second spring, and a circular plate. The clamping seat is fixedly connected to one end of the support rod, the sliding block is movably inserted into the outer surface of the support rod, the circular plate is fixedly connected to the other end of the support rod, the second spring is fixedly connected between the circular plate and the sliding block, and the sliding block is movably inserted into the second limiting groove.

[0010] Furthermore, the second spring is sleeved on the outer surface of the support rod, the support rod is configured as an L-shaped structure, and one end of the sliding block is fixedly connected to the first spring.

[0011] Furthermore, a first limiting groove is provided at the center of the top of the support plate, and slide rails are installed on both sides of the top of the support plate. Limiting devices are slidably connected to the outer surfaces of both sides of the slide rails. Multiple limiting holes are provided at equal intervals on both sides of the top of the support plate, and a control panel is installed on one end of one of the connecting plates.

[0012] Furthermore, both slide rails are located between the limiting holes on both sides.

[0013] Furthermore, the limiting device includes a slide block, a connecting block, a limiting seat, a support frame, an electric telescopic rod, a fixing plate, and a clamping plate. The connecting block is fixedly connected to the top of the slide block, the limiting seat is installed on one side of the top of the connecting block, the support frame is fixedly connected to the other side of the top of the connecting block, the electric telescopic rod is installed on the top of the support frame, the fixing plate is fixedly connected to the output end of the electric telescopic rod, the clamping plate is installed on the end of the fixing plate away from the electric telescopic rod, and the slide block is slidably connected to the outer surface of the slide rail.

[0014] Furthermore, the limiting seat is installed in the corresponding limiting hole by screws.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves efficient and precise positioning of fire doors of different sizes through the coordinated operation of multiple components, including a cylinder, a displacement plate, a limiting plate, and a positioning mechanism. During the positioning process, the cylinder opens and closes to raise and lower the limiting plate. The tilt angle at both ends of the limiting plate pushes the positioning mechanism to move, allowing both ends of the positioning mechanism to fit against the corners of the door frame, thus effectively positioning the door frame and ensuring the fire door remains stable during subsequent operations without shifting or shaking. Simultaneously, the limiting rod connected to the limiting plate slides within the mounting groove and the first limiting groove, improving the displacement stability of the pressing mechanism and ensuring accurate pressing operations. Furthermore, the metal frame and fireproof design ensure reliable operation. When materials and door panels are placed, their respective thicknesses exert a pushing effect on the clamping seat, ensuring that the clamping seat remains tightly fitted to the door panel. Regardless of changes in door panel size, the clamping seat automatically adjusts its position to ensure consistent contact. This design not only adapts to the edge sealing needs of fire doors of different sizes, greatly improving the equipment's versatility and applicability, and reducing the hassle of replacing equipment or making complex adjustments due to differences in fire door sizes, but also significantly improves the quality and efficiency of edge sealing operations, ensuring the tightness and stability of fire door edge sealing and providing a reliable guarantee for the quality of fire doors.

[0016] This invention utilizes the coordinated operation of a sliding seat, a limiting seat, a slide rail, a limiting hole, an electric telescopic rod, and a clamping plate. With the limiting seat and support plate being detachable, when adapting to a specific size fire door, workers can flexibly adjust the limiting seat on the sliding seat according to the actual size of the fire door. Then, the limiting seat and support plate are detachably connected using screws. This detachable design makes adjustment extremely convenient, requiring no complex operations or significant time, allowing for rapid preparation for adapting to different sizes of fire doors. The electric telescopic rod and clamping plate can press the metal frame, and the fixing and limiting devices can stably fix the metal frame, fireproof materials, and door leaf, achieving efficient adaptation to different sizes of fire doors and stable fixation of the metal frame, fireproof materials, and door leaf.

[0017] This invention utilizes the coordinated operation of a displacement mechanism, a lifting device, and a welding device. The displacement mechanism enables the welding device to move flexibly in four directions (front, back, left, and right). Simultaneously, the lifting device controls the welding device to lift and lower during the welding process. Through the cooperation of the displacement mechanism and the lifting device, the welding device can automatically switch welding positions and precisely weld the edges of the fire door, avoiding errors and instabilities that may occur during manual operation. Under the precise control of the automated system, the weld seam can achieve a high-quality standard of being firm, crack-free, or free of incomplete welds. Each weld point is uniform and full, and the welded joints are tightly bonded, effectively improving the overall sealing performance and structural strength of the fire door. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 A cross-sectional view of the overall structure provided in an embodiment of the present invention; Figure 3 A cross-sectional view of the overall structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 8 This is a structural schematic diagram provided for an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Support plate; 2. Support foot; 3. Connecting plate; 4. Control panel; 5. Displacement mechanism; 6. Lifter; 7. Welder; 8. Fixing device; 9. Limiting device; 10. Connecting seat; 11. Limiting hole; 12. First limiting groove; 13. Slide rail; 91. Slide seat; 92. Connecting block; 93. Limiting seat; 94. Support frame; 95. Electric telescopic rod; 96. Fixing plate; 97. Clamping plate; 81. Displacement plate; 82. Limiting plate; 83. Limiting rod; 84. Cylinder; 85. Positioning mechanism; 851. Bracket; 852. Second limiting groove; 853. Mounting groove; 854. Pressing mechanism; 855. First spring; 541. Support rod; 542. Pressing seat; 543. Sliding block; 544. Second spring; 545. Circular plate. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0022] Please see Figure 1 - Figure 8As shown, a fire door composite edge sealing device includes a support plate 1. The support plate 1 is characterized in that support feet 2 are fixedly connected to both ends of the support plate 1, and multiple connecting seats 10 are installed at equal distances on the top of the two support feet 2. A connecting plate 3 is installed in both connecting seats 10 on both sides, and a displacement mechanism 5 is installed on the top of the two connecting plates 3. A lifting device 6 is installed at one end of the displacement mechanism 5, and a welding device 7 is installed at the end of the lifting device 6 away from the displacement mechanism 5. A fixing device 8 is fixedly connected to the middle of the top of the support plate 1. The fixing device 8 includes a displacement plate 81, a limiting plate 82, a limiting rod 83, a cylinder 84, and a positioning mechanism 85. There are two limiting plates 82, two limiting rods 83, and two positioning mechanisms 85. The two limiting plates 82 are fixedly connected to the two sides of the bottom end of the displacement plate 81, the two limiting rods 83 are fixedly connected to the opposite sides of the two limiting plates 82, the two positioning mechanisms 85 are movably inserted and connected to the outer surface of the two limiting rods 83, and the cylinder 84 is fixedly connected to the bottom end of the displacement plate 81. The bottom end of the cylinder 84 is fixedly connected to the top center of the support plate 1. The two limiting plates 82 are respectively movably inserted into the two first limiting grooves 12. Both ends of the limiting plates 82 are set as inclined structures. The top center of the support plate 1 is provided with a first limiting groove 12, and slide rails 13 are installed on both sides of the top of the support plate 1. Limiting devices 9 are slidably connected to the outer surfaces of both sides of the slide rails 13. Multiple limiting holes 11 are provided at equal intervals on both sides of the top of the support plate 1. A control panel 4 is installed on one end of one of the connecting plates 3. Both slide rails 13 are located between the two limiting holes 11 on both sides.

[0023] As can be seen from the above, in actual operation, the metal frame, fireproof material, and door leaf are placed sequentially on the top of the support plate 1. The fireproof material is located between the metal frame and the door leaf, and the metal frame, fireproof material, and door leaf are all located between the limiting device 9 and the fixing device 8. Due to the thickness of the metal frame, fireproof material, and door leaf, the positioning mechanism 85 is pushed. The positioning mechanism 85 is compressed and contracted, and both ends of the two positioning mechanisms 85 are in contact with the door leaf. The cylinder 84 is activated, and the output end of the cylinder 84 contracts, causing the output end to drive the displacement plate 81 to move downward. The displacement plate 81 pushes the limiting plate 82 to move downward, and the inclined surface of the limiting plate 82 pushes the positioning mechanism 85 to move, thus positioning the door. Mechanism 85 is close to the corner of the inner wall of the door leaf. The door leaf is limited by two positioning mechanisms 85. According to the size of the fire door, the limiting device 9 is pulled to slide on the outer surface of the slide rail 13. After moving to the appropriate position, it is fixed. Then the limiting device 9 is activated so that one end of the limiting device 9 is attached to the metal frame, thereby fixing the metal frame, fireproof material and door leaf. During the welding and sealing operation, the displacement mechanism 5 is used to drive the welder 7 to move back and forth and left and right. Then the lifting device 6 is used to realize the lifting and lowering of the welder 7 during welding, thereby realizing the automatic conversion of the welding position during the sealing operation, ensuring the accuracy and firmness of the butt joint, and ensuring that the weld is firm and free of cracks or false welds. Example

[0024] refer to Figure 6 , Figure 7 and Figure 8 As shown, the positioning mechanism 85 includes a bracket 851, a second limiting groove 852, a mounting groove 853, a pressing mechanism 854, and a first spring 855. The second limiting groove 852 is opened at one end of the bracket 851. There are two mounting grooves 853 and two pressing mechanisms 854, and the two pressing mechanisms 854 are movably inserted into the second limiting groove 852. The first spring 855 is fixedly connected between the two pressing mechanisms 854. The two mounting grooves 853 are opened at the middle of one end of the bracket 851. The bracket 851 is fixedly connected to the top of the support plate 1. The clamping mechanism 854 includes a support rod 541, a clamping seat 542, a sliding block 543, a second spring 544, and a circular plate 545. The clamping seat 542 is fixedly connected to one end of the support rod 541. The sliding block 543 is movably inserted into the outer surface of the support rod 541. The circular plate 545 is fixedly connected to the other end of the support rod 541. The second spring 544 is fixedly connected between the circular plate 545 and the sliding block 543. The sliding block 543 is movably inserted into the second limiting groove 852.

[0025] As can be seen from the above, when placing the metal frame, fireproof material, and door leaf, since all three have a certain thickness, they will exert a pushing force on the pressing seat 542 after being placed in place. After the pressing seat 542 is subjected to force, it drives the support rod 541 to slide in the sliding block 543. The sliding of the support rod 541 causes the circular plate 545 to shift, thereby stretching the second spring 544 and leaving an elastic buffer space. After the placement is completed, the cylinder 84 is activated, and its output end contracts, causing the displacement plate 81 to move down. The displacement plate 81 then pushes the limiting plate 82 down. The inclined surface of the limiting plate 82 generates a lateral component force, pushing the support rod 541 to shift. The support rod 541 drives the pressing seat 542 to move, making it close to the corner of the inner wall of the door leaf. At the same time, the sliding block 543 shifts in the second limiting groove 852, pulling the first spring 855 to extend. At this time, the two positioning mechanisms 85 work together to accurately limit the door leaf from different directions, ensuring the stability of the door leaf position during operation and providing a reliable guarantee for subsequent welding and other operations.

[0026] Preferably, the second spring 544 is sleeved on the outer surface of the support rod 541, the support rod 541 is configured as an L-shaped structure, and one end of the sliding block 543 is fixedly connected to the first spring 855.

[0027] As can be seen from the above, when the sliding block 543 is connected to the first spring 855, it can be reset by the force of the first spring 855 when there is no restriction. Example

[0028] refer to Figure 3 and Figure 5 As shown, the limiting device 9 includes a slide block 91, a connecting block 92, a limiting seat 93, a support frame 94, an electric telescopic rod 95, a fixing plate 96, and a clamping plate 97. The connecting block 92 is fixedly connected to the top of the slide block 91. The limiting seat 93 is installed on one side of the top of the connecting block 92. The support frame 94 is fixedly connected to the other side of the top of the connecting block 92. The electric telescopic rod 95 is installed on the top of the support frame 94. The fixing plate 96 is fixedly connected to the output end of the electric telescopic rod 95. The clamping plate 97 is installed on the end of the fixing plate 96 away from the electric telescopic rod 95. The slide block 91 is slidably connected to the outer surface of the slide rail 13.

[0029] As can be seen from the above, during the actual installation of fire doors, due to the differences in the specifications and dimensions of different fire doors, the staff needs to operate precisely according to the actual size of the fire door, pull the limiting device 9, and make it slide smoothly along the outer surface of the slide rail 13 to ensure that it reaches the appropriate position that matches the size of the fire door. After the limiting device 9 moves to the predetermined position, it is firmly fixed with screws. The tightening action of the screws can effectively ensure that the position of the limiting device 9 is stable during subsequent operations and will not shift due to external factors, providing a reliable foundation for the entire fixing process. After the limiting device 9 is fixed, the staff will activate the electric telescopic rod 95, whose output end extends and drives the fixing plate 96 to move. The fixing plate 96 further drives the clamping plate 97 to move towards the metal frame. As the clamping plate 97 continues to move, it gradually approaches the metal frame and finally fits tightly against the surface of the metal frame, so that the metal frame, fireproof material and door leaf are stably fixed together to form a solid whole, providing stable conditions for subsequent welding and other processing procedures, and ensuring the installation quality of the fire door.

[0030] Preferably, the limiting seat 93 is installed in the corresponding limiting hole 11 by screws.

[0031] As can be seen from the above, the limiting seat 93 can be disassembled and assembled with the support plate 1 as needed.

[0032] Furthermore, this invention is designed and applied in the field of fire door composite welding edge sealing. In actual operation, the staff needs to place the metal frame, fireproof material and door leaf in a specific order on the top of the support plate 1. The fireproof material is placed between the metal frame and the door leaf, and it is ensured that the metal frame, fireproof material and door leaf are all within the range defined by the limiting device 9 and the fixing device 8. When placing the metal frame, fireproof material and door leaf, since each of these three has a certain thickness, when they are placed in the corresponding position, they will push the pressing seat 542. After being pushed, the pressing seat 542 will drive the support rod 541 to slide inside the sliding block 543. The sliding of the support rod 541 will further push the circular plate 545 fixedly connected to it to move. The displacement of the circular plate 545 will cause the second spring 544 connected to it to be stretched and extended. After the above placement operation is completed, cylinder 84 is activated, and the output end of cylinder 84 begins to retract. This retraction action will cause the displacement plate 81 fixedly connected to it to move downward. During the downward movement of displacement plate 81, it will push the limiting plate 82 fixedly connected to it to move downward together. When the limiting plate 82 moves downward, it will push the support rod 541 to move due to the inclination angle of its inclined surface. During the displacement of support rod 541, it will drive the pressing seat 542 movably inserted to it to move together, so that the pressing seat 542 is tightly attached to the corner of the inner wall of the door leaf. At the same time, when the sliding block 543 moves in the second limiting groove 852, it will pull the first spring 855 fixedly connected to it to extend. At this time, through the coordinated action of the two positioning mechanisms 85, the door leaf is effectively limited to ensure that the door leaf is stable in position during operation. Next, based on the actual size of the fire door, the staff needs to pull the limiting device 9 to slide it on the outer surface of the slide rail 13. After the limiting device 9 moves to the appropriate position, the limiting seat 93 is fixed to the limiting hole 11 with screws to ensure that the position of the limiting device 9 is stable. Then, the electric telescopic rod 95 is started. The output end of the electric telescopic rod 95 begins to extend and drives the fixed plate 96 to move through the output end. The displacement of the fixed plate 96 will further drive the clamping plate 97 to move, and finally make the clamping plate 97 tightly fit against the surface of the metal frame. Through this series of operations, the metal frame, fireproof material and door leaf are stably fixed together, making full preparations for subsequent welding operations. When entering the welding and sealing stage, the displacement mechanism 5 can drive the welder 7 to move flexibly in four directions: forward, backward, left, and right. At the same time, the lifting device 6 can control the welding device 7 to lift and lower during the welding process. Through the cooperation of the displacement mechanism 5 and the lifting device 6, the welder 7 can automatically change the welding position and accurately weld the edge of the fire door. This automated welding method greatly ensures the accuracy and firmness of the joint, ensuring that the weld meets the quality standards of being firm, without cracks or false welds, thereby effectively improving the overall quality and performance of the fire door.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fire door composite edge sealing device, comprising a support plate (1), characterized in that, Both ends of the support plate (1) are fixedly connected to support feet (2), and multiple connecting seats (10) are installed at equal distances on the top of the two support feet (2). Both connecting seats (10) on both sides are installed with connecting plates (3), and the top of the two connecting plates (3) are installed with displacement mechanisms (5). One end of the displacement mechanism (5) is equipped with a lifter (6), and the end of the lifter (6) away from the displacement mechanism (5) is equipped with a welder (7). The top center of the support plate (1) is fixedly connected with a fixing device (8). The fixing device (8) includes a displacement plate (81), a limiting plate (82), a limiting rod (83), a cylinder (84), and a positioning mechanism (85). There are two of each of the limiting plate (82), the limiting rod (83), and the positioning mechanism (85). The two limiting plates (82) are fixedly connected to the bottom sides of the displacement plate (81), the two limiting rods (83) are fixedly connected to the opposite sides of the two limiting plates (82), the two positioning mechanisms (85) are movably inserted and connected to the outer surface of the two limiting rods (83), and the cylinder (84) is fixedly connected to the bottom of the displacement plate (81).

2. The fire door composite edge sealing device according to claim 1, characterized in that, The bottom end of the cylinder (84) is fixedly connected to the top center of the support plate (1), and the two limiting plates (82) are respectively movably inserted into the two first limiting grooves (12). Both ends of the limiting plates (82) are set as inclined structures.

3. The fire door composite edge sealing device according to claim 1, characterized in that, The positioning mechanism (85) includes a bracket (851), a second limiting groove (852), a mounting groove (853), a pressing mechanism (854), and a first spring (855). The second limiting groove (852) is opened at one end of the bracket (851). There are two mounting grooves (853) and two pressing mechanisms (854), and the two pressing mechanisms (854) are movably inserted into the second limiting groove (852). The first spring (855) is fixedly connected between the two pressing mechanisms (854). The two mounting grooves (853) are opened at the middle of one end of the bracket (851). The bracket (851) is fixedly connected to the top of the support plate (1).

4. The fire door composite edge sealing device according to claim 1, characterized in that, The limiting rod (83) is movably inserted into two mounting slots (853).

5. A fire door composite edge sealing device according to claim 3, characterized in that, The clamping mechanism (854) includes a support rod (541), a clamping seat (542), a sliding block (543), a second spring (544), and a circular plate (545). The clamping seat (542) is fixedly connected to one end of the support rod (541). The sliding block (543) is movably inserted into the outer surface of the support rod (541). The circular plate (545) is fixedly connected to the other end of the support rod (541). The second spring (544) is fixedly connected between the circular plate (545) and the sliding block (543). The sliding block (543) is movably inserted into the second limiting groove (852).

6. A fire door composite edge sealing device according to claim 5, characterized in that, The second spring (544) is sleeved on the outer surface of the support rod (541), the support rod (541) is configured as an L-shaped structure, and one end of the sliding block (543) is fixedly connected to the first spring (855).

7. A fire door composite edge sealing device according to claim 1, characterized in that, The support plate (1) has a first limiting groove (12) at the top center. The support plate (1) has slide rails (13) installed on both sides of the top. The outer surfaces of both sides of the slide rails (13) are slidably connected to limiting devices (9). The support plate (1) has multiple limiting holes (11) at equal distances on both sides of the top. One end of the connecting plate (3) is equipped with a control panel (4).

8. A fire door composite edge sealing device according to claim 7, characterized in that, Both slide rails (13) are located between the two limiting holes (11) on both sides.

9. A fire door composite edge sealing device according to claim 7, characterized in that, The limiting device (9) includes a slide (91), a connecting block (92), a limiting seat (93), a support frame (94), an electric telescopic rod (95), a fixing plate (96), and a clamping plate (97). The connecting block (92) is fixedly connected to the top of the slide (91). The limiting seat (93) is installed on one side of the top of the connecting block (92). The support frame (94) is fixedly connected to the other side of the top of the connecting block (92). The electric telescopic rod (95) is installed on the top of the support frame (94). The fixing plate (96) is fixedly connected to the output end of the electric telescopic rod (95). The clamping plate (97) is installed on the end of the fixing plate (96) away from the electric telescopic rod (95). The slide (91) is slidably connected to the outer surface of the slide rail (13).

10. A fire door composite edge sealing device according to claim 9, characterized in that, The limiting seat (93) is installed in the corresponding limiting hole (11) by screws.

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