Automatic sealing device for wire mesh skeleton pipe

By designing an automatic sealing device, and utilizing clamps, pipe end processing, and heat fusion devices, automated sealing of steel wire mesh reinforced pipes was achieved, solving the problems of low sealing quality and efficiency, and improving sealing quality and efficiency.

CN118163365BActive Publication Date: 2026-06-26ANHUI HAOJIA PIPE IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI HAOJIA PIPE IND CO LTD
Filing Date
2024-04-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The sealing process of existing steel wire mesh reinforced pipes relies on manual operation, which makes it difficult to guarantee the sealing quality, has a low degree of automation, and low work efficiency.

Method used

Design an automatic sealing device for steel wire mesh reinforced pipes, including a clamping device, a pipe end processing device, a hydraulic press device, and a hot melt device. The device automatically completes the clamping, grinding, hot melt, and welding processes of the steel wire mesh reinforced pipes through a motor and hydraulic system.

Benefits of technology

It achieves efficient and automatic sealing of steel wire mesh reinforced pipes, improving sealing quality and work efficiency, and enhancing the degree of automation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of pipe processing equipment, and particularly relates to an automatic sealing device for steel wire mesh skeleton pipe, which comprises a rack, a workbench fixedly installed on the rack, vertically arranged gantry devices symmetrically arranged on both sides of the workbench, a lifting device connected to the gantry devices, a pipe mouth processing device connected to the lower end of the lifting device, a clamp device slidingly connected to the right end of the workbench, a hydraulic machine device fixedly arranged at the left end of the workbench, and a hot melting device arranged between the hydraulic machine device and the pipe mouth processing device. The novel clamp device can efficiently clamp, disassemble and feed the steel wire mesh skeleton pipe, the pipe mouth processing device cooperates with the lifting device to automatically polish and trim the end of the steel wire mesh skeleton pipe during the translation of the steel wire mesh skeleton pipe, the hydraulic machine device and the hot melting device can automatically weld the sealing ring on the steel wire mesh skeleton pipe, the welding precision is high, and the working efficiency is greatly improved.
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Description

Technical Field

[0001] This invention belongs to the technical field of pipe processing equipment, specifically relating to an automatic sealing device for steel wire mesh reinforced pipes. Background Technology

[0002] Steel wire mesh reinforced pipe, also known as steel wire mesh reinforced plastic composite pipe, is a composite wall pipe with a core layer of high-strength steel wire continuously wound into a reinforcing skeleton, and a polyethylene special material that meets the requirements of the conveying medium is uniformly extruded to form an integral pipe wall. It is suitable for water supply and gas transmission pipeline systems. After the steel wire mesh reinforced pipe is cut, it needs to be sealed to prevent fluid and dust from entering between the steel wire mesh. Currently, most technologies use plastic ring butt welding sealing technology, which heat-fuses the plastic ring to the pipe end face. The sealing process is as follows: First, the pipe end face is ground to make it flat and remove oxide scale; then, the pipe end face and the plastic ring are placed on both sides of a heating mold and heat-fused simultaneously; then, the plastic ring is immediately removed and pressed onto the pipe end face; finally, the welded part is trimmed. In the existing production process, the above process is mostly carried out manually, which makes it difficult to guarantee the sealing quality, and the automation level is low, resulting in low work efficiency.

[0003] Therefore, in view of the above-mentioned shortcomings, this application proposes an automatic sealing device for steel wire mesh reinforced pipes that can effectively solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic sealing device for steel wire mesh reinforced pipes, thereby effectively solving the problems existing in the prior art.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows:

[0006] An automatic sealing device for steel wire mesh reinforced pipes includes a frame, a workbench fixedly mounted on the frame, vertical gantry frames symmetrically arranged on both sides of the workbench, a lifting device connected to the gantry frames, a pipe end processing device connected to the lower end of the lifting device, a clamping device slidably connected to the right end of the workbench, the clamping device being slidably connected to the frame, and a hydraulic press fixedly mounted on the left end of the workbench, with a heat fusion device provided between the hydraulic press and the pipe end processing device.

[0007] As a further feature of the above solution, a guide rail is provided on the center line of the upper end face of the frame, and a clearance groove with an opening to the right is provided on the worktable. The clearance groove is located directly above the guide rail, and positioning blocks are symmetrically provided on both sides of the clearance groove.

[0008] As a further provision of the above solution, the clamping device includes a driving device and a clamping table. The driving device is slidably connected to the guide rail, and the clamping table is slidably connected to the clearance groove. The driving device and the clamping table are fixedly connected. The clamping table is provided with symmetrical vertical supports, and a fixed clamping plate is slidably installed on the supports. The upper surface of the fixed clamping plate is connected to a third motor device. The wire mesh skeleton tube is placed between the clamping table and the fixed clamping plate. The third motor device drives the fixed clamping plate to move downward on the support, clamping the wire mesh skeleton tube on the clamping device. The driving device reciprocates on the guide rail, driving the wire mesh skeleton tube to move left and right.

[0009] As a further provision of the above solution, the lifting device includes a cylinder, which is vertically and fixedly installed on the gantry frame device. A lifting rod is fixedly connected to the lower end of the cylinder, and a connecting plate is connected to the lower end of the lifting rod. The cylinder drives the connecting plate to move up and down through the lifting rod.

[0010] As a further provision of the above solution, the pipe processing device includes a support platform, which is fixedly connected to a connecting plate. A rotating device is provided at the center of the support platform. A first motor device is connected to the upper end of the rotating device, and a vertical mounting plate is connected to the lower end of the rotating device. Fixing blocks are provided at the lower ends of both sides of the mounting plate. The fixing blocks can cooperate with positioning blocks. A grinding turntable is mounted on the mounting plate. A second motor device is provided above the grinding turntable. A gear shaft is provided at the output end of the second motor device, and the gear shaft is rotatably connected to the mounting plate.

[0011] As a further feature of the above solution, the grinding turntable is cylindrical, and a mounting ring groove is formed on the cylindrical surface of the grinding turntable. The grinding turntable is rotatably connected to the mounting plate through the mounting ring groove. A grinding device is provided on one end face of the grinding turntable. The grinding device includes a grinding ring groove, which is coaxial with the grinding turntable. Gear teeth are formed on the outer edge of the grinding ring groove, and the gear teeth mesh with a gear shaft. A dressing device is provided on the other end face of the grinding turntable. The dressing device has dressing teeth. A second motor device drives the gear shaft to rotate, and through the cooperation between the gear shaft and the gear teeth, the grinding turntable is rotated.

[0012] As a further provision of the above scheme, the hydraulic press device includes a hydraulic press, the right end of which is provided with a hydraulic rod, and a pressure block is fixedly connected to the right end of the hydraulic rod, and a sealing ring can be clamped on the pressure block.

[0013] As a further provision of the above scheme, the hot-melt device includes a hot-melt box, which is vertically fixed on the workbench. The hot-melt box has an upward-opening hot-melt cavity. Through slots are opened on both sides of the hot-melt box, and the through slots communicate with the hot-melt cavity. A vent is opened at the lower end of the hot-melt cavity, which can play a role in pressure reduction. A hot-melt plate is slidably connected inside the hot-melt cavity, and a connecting rod is provided at the upper end of the hot-melt plate.

[0014] As a further feature of the above solution, a bridge is provided on the upper surface of the hot melt box, and a lifting device is provided on the bridge. The lifting device is connected to a connecting rod. The lifting device drives the hot melt plate to slide up and down in the hot melt cavity through the connecting rod. When the hot melt plate is at the lowest point, the through groove is completely blocked. When the hot melt plate is at the highest point, the through groove is completely open.

[0015] The beneficial effects of this invention are:

[0016] When sealing wire mesh reinforced pipes, this equipment places one end of the wire mesh reinforced pipe between the clamping table and the fixed clamping plate. The third motor drives the fixed clamping plate to move downward on the support, clamping and fixing the wire mesh reinforced pipe onto the clamping device. The drive device starts, moving the wire mesh reinforced pipe to the left. At the same time, the cylinder is activated, driving the connecting plate downward through the lifting rod. The rotating device and grinding turntable on the bearing platform move downward synchronously. When the fixed block connects with the positioning block, the mounting plate is fixed on the worktable. The grinding turntable is coaxial with the wire mesh reinforced pipe. The second motor starts, driving the grinding turntable to rotate through the engagement of the gear shaft and gear teeth. The wire mesh reinforced pipe moves to the left, and the end of the wire mesh reinforced pipe enters the grinding ring groove. After the grinding ring groove grinds the end of the wire mesh reinforced pipe, the wire mesh reinforced pipe retracts to the right, and the end of the wire mesh reinforced pipe exits the grinding ring groove. The lifting rod drives the connecting plate to move upward, and the pipe end processing device avoids the path of the leftward movement of the wire mesh reinforced pipe.

[0017] The wire mesh reinforced tube continues to move to the left, while the lifting device drives the hot melt plate to slide downwards in the hot melt chamber via the connecting rod. When the hot melt plate is at its lowest point, the through groove is completely blocked, and the wire mesh reinforced tube enters the through groove and contacts the hot melt plate. The hydraulic press is started, and the sealing ring on the pressure block is pushed to the right into the through groove to contact the hot melt plate via the hydraulic rod. The hot melt plate simultaneously heats the end of the wire mesh reinforced tube and the sealing ring. After the heat melting is completed, the lifting device drives the hot melt plate to slide upwards to the highest point. At this time, the through groove is completely connected, and the pressure block continues to move to the right, welding the molten sealing ring and the end of the wire mesh reinforced tube together.

[0018] After welding, the clamping device moves the wire mesh skeleton tube to the right. When it reaches the bottom of the tube end processing device, the first and second motor devices start and drive the grinding turntable to rotate 180° through the rotating device. The lifting rod drives the grinding turntable to move downward synchronously. The trimming device contacts the end of the wire mesh skeleton tube, and the trimming teeth rotate to trim and flatten the end of the wire mesh skeleton tube, completing the entire sealing process.

[0019] This invention, through the design of a novel clamping device, enables efficient clamping, disassembly, and forward / backward feeding movement of wire mesh reinforced tubes. The tube end processing device, in conjunction with the lifting device, can automatically grind and trim the ends of the wire mesh reinforced tubes during translation, saving labor time. The hydraulic press and hot-melt device can automatically weld the sealing ring onto the wire mesh reinforced tubes with high welding precision, greatly improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0021] Figure 2 This is a front view of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0023] Figure 4 This is a diagram showing the relationship between the gantry frame device and the pipe end processing device of the present invention;

[0024] Figure 5 This is a schematic diagram of the nozzle processing device of the present invention;

[0025] Figure 6 This is a schematic diagram of the grinding turntable of the present invention;

[0026] Figure 7 This is a schematic diagram of the hydraulic press device and the hot melt device of the present invention.

[0027] 1. Frame; 2. Workbench; 3. Gantry frame assembly; 4. Lifting device; 5. Pipe end treatment device; 6. Clamping device; 7. Hydraulic press assembly; 8. Hot melt assembly; 9. Steel wire mesh reinforced pipe; 10. Sealing ring; 101. Guide rail; 201. Clearance groove; 202. Positioning block; 401. Cylinder; 402. Lifting rod; 403. Connecting plate; 501. Bearing platform; 502. Rotating device; 503. First motor assembly; 504. Mounting plate; 5041. Fixing block; 505. Grinding turntable; 5051. Mounting ring groove; 5052. Grinding device 5052-1, Grinding ring groove; 5052-2, Gear tooth; 5053, Dressing device; 5053-1, Dressing tooth; 506, Second motor device; 601, Drive device; 602, Fixture table; 6021, Support; 603, Fixed clamping plate; 604, Third motor device; 701, Hydraulic press; 702, Hydraulic rod; 703, Pressure block; 801, Hot melt box; 8011, Hot melt cavity; 8012, Through groove; 8013, Vent hole; 802, Cable tray; 803, Hot melt plate; 8031, Connecting rod; 804, Lifting device. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-7 This application will be described in detail with reference to the embodiments.

[0030] like Figure 1 , Figure 2 As shown, this embodiment discloses an automatic sealing device for steel wire mesh reinforced pipes. A workbench 2 is fixedly installed on the frame 1. Vertical gantry frames 3 are symmetrically arranged on both sides of the workbench 2. A lifting device 4 is connected to the gantry frame 3. A pipe end processing device 5 is connected to the lower end of the lifting device 4. A clamping device 6 is slidably connected to the right end of the workbench 2. The clamping device 6 is also slidably connected to the frame 1. A hydraulic press device 7 is fixedly installed on the left end of the workbench 2. A heat fusion device 8 is provided between the hydraulic press device 7 and the pipe end processing device 5.

[0031] like Figure 3 , Figure 4As shown, a guide rail 101 is provided on the center line of the upper end face of the frame 1, and a clearance groove 201 with an opening to the right is opened on the worktable 2. The clearance groove 201 is located directly above the guide rail 101, and positioning blocks 202 are symmetrically provided on both sides of the clearance groove 201. The clamping device 6 includes a driving device 601 and a clamping table 602. The driving device 601 is slidably connected to the guide rail 101, and the clamping table 602 is slidably connected to the clearance groove 201. The driving device 601 and the clamping table 602 are fixedly connected. A symmetrical vertical support 6021 is provided on the clamping table 602. A fixed clamping plate 603 is slidably installed on the support 6021. The upper end face of the fixed clamping plate 603 is connected to the third motor device 604.

[0032] The lifting device 4 includes a cylinder 401, which is vertically fixed on the gantry frame device 3. A lifting rod 402 is fixedly connected to the lower end of the cylinder 401, and a connecting plate 403 is connected to the lower end of the lifting rod 402. The cylinder 401 drives the connecting plate 403 to move up and down through the lifting rod 402.

[0033] like Figure 5 , Figure 6 As shown, the pipe processing device 5 includes a support platform 501, which is fixedly connected to the connecting plate 403. A rotating device 502 is provided at the center of the support platform 501. A first motor device 503 is connected to the upper end of the rotating device 502, and a vertical mounting plate 504 is connected to the lower end of the rotating device 502. Fixing blocks 5041 are provided at the lower ends of both sides of the mounting plate 504. The fixing blocks 5041 can be connected with the positioning blocks 202. A grinding turntable 505 is installed on the mounting plate 504. A second motor device 506 is provided above the grinding turntable 505. A gear shaft is provided at the output end of the second motor device 506, and the gear shaft is rotatably connected to the mounting plate 504.

[0034] The grinding turntable 505 is cylindrical, and a mounting ring groove 5051 is opened on the cylindrical surface of the grinding turntable 505. The grinding turntable 505 is rotatably connected to the mounting plate 504 through the mounting ring groove 5051. A grinding device 5052 is provided on one end face of the grinding turntable 505. The grinding device 5052 includes a grinding ring groove 5052-1, which is coaxial with the grinding turntable 505. Gear teeth 5052-2 are opened on the outer edge of the grinding ring groove 5052-1, and the gear teeth 5052-2 are meshed with the gear shaft. A dressing device 5053 is provided on the other end face of the grinding turntable 505. The dressing device 5053 is provided with dressing teeth 5053-1. The second motor device 506 drives the gear shaft to rotate. Through the cooperation between the gear shaft and the gear teeth 5052-2, the grinding turntable 505 is driven to rotate.

[0035] like Figure 7As shown, the hydraulic press device 7 includes a hydraulic press 701, a hydraulic rod 702 is provided at the right end of the hydraulic press 701, and a pressure block 703 is fixedly connected to the right end of the hydraulic rod 702. The sealing ring 10 can be clamped on the pressure block 703.

[0036] The hot-melting device 8 includes a hot-melting box 801, which is vertically fixed on the workbench 2. The hot-melting box 801 has an upward-opening hot-melting cavity 8011. Through slots 8012 are formed on both sides of the hot-melting box 801, communicating with the hot-melting cavity 8011. A vent 8013 is formed at the lower end of the hot-melting cavity 8011, which reduces pressure. A hot-melting plate 803 is slidably connected inside the hot-melting cavity 8011. 3. A connecting rod 8031 ​​is provided at the upper end; a bridge 802 is provided on the upper surface of the hot melt box 801, and a lifting device 804 is provided on the bridge 802. The lifting device 804 is connected to the connecting rod 8031. The lifting device 804 drives the hot melt plate 803 to slide up and down in the hot melt cavity 8011 through the connecting rod 8031. When the hot melt plate 803 is at the lowest point, the through groove 8012 is completely blocked. When the hot melt plate 803 is at the highest point, the through groove 8012 is completely open.

[0037] The working principle of this invention is as follows: One end of the wire mesh skeleton tube 9 is placed between the clamping table 602 and the fixed clamping plate 603. The third motor device 604 drives the fixed clamping plate 603 to move downward on the bracket 6021, clamping and fixing the wire mesh skeleton tube 9 onto the clamping device 6. The drive device 601 is started, driving the wire mesh skeleton tube 9 to move to the left. At the same time, the cylinder 401 is started, driving the connecting plate 403 downward through the lifting rod 402. Then, the rotating device 502 and the grinding turntable 505 on the bearing platform 501 move downward synchronously. When the fixing block 5041 is connected to the positioning block 202, the mounting plate 504 is fixed. On workbench 2, the grinding turntable 505 is coaxial with the wire mesh reinforcement tube 9. The second motor device 506 is started, and through the cooperation of the gear shaft and gear teeth 5052-2, the grinding turntable 505 is driven to rotate. The wire mesh reinforcement tube 9 moves to the left, and the end of the wire mesh reinforcement tube 9 enters the grinding ring groove 5052-1. After the grinding ring groove 5052-1 grinds the end of the wire mesh reinforcement tube 9, the wire mesh reinforcement tube 9 retracts to the right, and the end of the wire mesh reinforcement tube 9 exits the grinding ring groove 5052-1. The lifting rod 402 drives the connecting plate 403 to move upward, and the tube end processing device 5 avoids the path of the leftward movement of the wire mesh reinforcement tube 9. The wire mesh reinforced tube 9 continues to move to the left, while the lifting device 804, through the connecting rod 8031, drives the hot melt plate 803 to slide downwards within the hot melt cavity. At its lowest point, the hot melt plate 803 is completely blocked from the through groove 8012. The wire mesh reinforced tube 9 enters the through groove and contacts the hot melt plate 803. The hydraulic press 701 starts, and through the hydraulic rod 702, it pushes the sealing ring 10 on the pressure block 703 to the right into the through groove 8012, where it contacts the hot melt plate 803. The hot melt plate 803 simultaneously heat-melts the ends of the wire mesh reinforced tube 9 and the sealing ring 10. After the heat melting is complete, the lifting device 804 drives the hot melt plate 803 to slide upwards to its highest point. At this point, the through groove 8012 is completely open, and the pressure block 703 continues to move to the right, welding the molten sealing ring 10 and the end of the wire mesh skeleton tube 9; the clamping device 6 drives the wire mesh skeleton tube 9 to move to the right, and when it runs below the tube end processing device 5, the first motor device 503 and the second motor device 506 start, and drive the grinding turntable 505 to rotate 180° through the rotating device 502, and the lifting rod 402 drives the grinding turntable 505 to move downward synchronously, and the trimming device 5053 contacts the end of the wire mesh skeleton tube 9, and the trimming teeth 5053-1 rotate to trim and flatten the end of the wire mesh skeleton tube 9.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic sealing device for steel wire mesh reinforced pipes, comprising a frame, wherein a worktable is fixedly mounted on the frame, characterized in that, The workbench is symmetrically equipped with vertical gantry frames on both sides. A lifting device is connected to the gantry frame. A pipe end processing device is connected to the lower end of the lifting device. A clamping device is slidably connected to the right end of the workbench. The clamping device is also slidably connected to the machine frame. A hydraulic press is fixedly installed on the left end of the workbench. A heat fusion device is provided between the hydraulic press and the pipe end processing device. The pipe processing device includes a support platform, which is fixedly connected to a connecting plate. A rotating device is provided at the center of the support platform. A first motor device is connected to the upper end of the rotating device, and a vertical mounting plate is connected to the lower end of the rotating device. Fixing blocks are provided at the lower ends of both sides of the mounting plate. The fixing blocks can be connected with positioning blocks. A grinding turntable is mounted on the mounting plate. A second motor device is provided above the grinding turntable. A gear shaft is provided at the output end of the second motor device. The gear shaft is rotatably connected to the mounting plate. The grinding turntable is cylindrical, and an mounting ring groove is formed on the cylindrical surface of the grinding turntable. The grinding turntable is rotatably connected to the mounting plate through the mounting ring groove. A grinding device is provided on one end face of the grinding turntable. The grinding device includes a grinding ring groove, which is coaxial with the grinding turntable. Gear teeth are formed on the outer edge of the grinding ring groove, and the gear teeth mesh with a gear shaft. A dressing device is provided on the other end face of the grinding turntable, and the dressing device is provided with dressing teeth. The lifting device lowers the pipe end processing device to grind the steel wire mesh skeleton pipe end with the grinding ring groove, and raises the pipe end processing device to avoid the translation path of the steel wire mesh skeleton pipe; the rotating device can drive the grinding turntable to rotate 180° so that the trimming device can trim the welded steel wire mesh skeleton pipe end.

2. The automatic sealing device for steel wire mesh reinforced pipes according to claim 1, characterized in that, The upper end face of the frame is provided with a guide rail, and the worktable has an opening to the right with a clearance groove located directly above the guide rail. Positioning blocks are symmetrically provided on both sides of the clearance groove.

3. The automatic sealing device for steel wire mesh reinforced pipes according to claim 1, characterized in that, The clamping device includes a driving device and a clamping table. The driving device is slidably connected to the guide rail, and the clamping table is slidably connected to the clearance groove. The driving device and the clamping table are fixedly connected. The clamping table is provided with symmetrical vertical supports, and a fixed clamping plate is slidably installed on the supports. The upper surface of the fixed clamping plate is connected to a third motor device.

4. The automatic sealing device for steel wire mesh reinforced pipes according to claim 1, characterized in that, The lifting device includes a cylinder, which is vertically and fixedly installed on the gantry frame device. A lifting rod is fixedly connected to the lower end of the cylinder, and a connecting plate is connected to the lower end of the lifting rod.

5. The automatic sealing device for steel wire mesh reinforced pipes according to claim 1, characterized in that, The hydraulic press device includes a hydraulic press, and a hydraulic rod is provided at the right end of the hydraulic press. A pressure block is fixedly connected to the right end of the hydraulic rod, and a sealing ring can be clamped on the pressure block.

6. The automatic sealing device for steel wire mesh reinforced pipes according to claim 1, characterized in that, The hot-melting device includes a hot-melting box, which is vertically fixed on a workbench. The hot-melting box has an upward-opening hot-melting cavity. Through slots are opened on both sides of the hot-melting box, and the through slots communicate with the hot-melting cavity. A vent hole is opened at the lower end of the hot-melting cavity. A hot-melting plate is slidably connected inside the hot-melting cavity, and a connecting rod is provided at the upper end of the hot-melting plate.

7. The automatic sealing device for steel wire mesh reinforced pipes according to claim 6, characterized in that, The upper surface of the hot melt box is provided with a bridge, and the bridge is provided with a lifting device, which is connected to the connecting rod.