A new heating device for winding structure wall pipe

Abstract

The utility model relates to heating equipment technical field, concretely is a kind of new heating device for winding structure wall pipe, the device includes assembly frame, horizontal support arm, oblique support arm, spout fire mechanism and infrared heating mechanism, the utility model discloses new heating device, whole device is supported above extruder with truss, reduces the interference risk, and expands the placing space of other equipment, heating position not only can be adjusted in X direction, Y direction, oblique three directions, but also can use electric push rod to adjust spout fire head angle, use cylinder to adjust the angle of infrared heating lamp group, simultaneously, when spout fire group heats, rear outer heating group rear cylinder retracts, infrared heating lamp group is far from spout fire head, avoids infrared heating lamp tube to bake bad.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, specifically a novel heating device for spiral wound structure wall tubes. Background Technology

[0002] In the production process of spiral wound structured wall tubes, the steel roller mold needs to be heated to 200-300℃ in order to wind the first layer of molten substrate. If the second and third layers are to be wound, the substrate after the first layer is wound needs to be heated again.

[0003] The current main method is to place a heating device structure between the main machine and the winding table, such as... Figure 1 The heating device mainly consists of a support frame, a lower lead screw motor, an upper lead screw motor, an upper flame nozzle, a lower flame return nozzle, an upper infrared heating lamp assembly, and a lower infrared heating lamp assembly. The following problems exist during its use: 1. This device is placed between the plastic extruder and the winding table, which takes up a lot of space and is prone to interference.

[0004] 2. The heating position is only adjusted by the upper and lower lead screws, which is not precise. It is still necessary to manually rotate the upper and lower flame heads and the upper and lower infrared heating lamps to find the exact position.

[0005] 3. When heating the roller mold with a flame head, the flame temperature will radiate to the heating lamp assembly side, which can easily damage the infrared heating lamp tube.

[0006] Therefore, overcoming the aforementioned technical problems and defects has become a key issue that needs to be addressed. Utility Model Content

[0007] The purpose of this invention is to provide a novel heating device for winding structural wall tubes. The entire device is supported above the extruder by a truss, which reduces the risk of interference and expands the placement space for other equipment. The heating position can be adjusted not only in three directions: X, Y, and diagonal, but also the angle of the flame head can be adjusted by an electric push rod and the angle of the infrared heating lamp group can be adjusted by a cylinder. At the same time, when the flame group is heating, the front and rear cylinders of the rear outer heating group retract, and the infrared heating lamp group moves away from the flame head to avoid the infrared heating lamp tubes being burned.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A novel heating device for spiral wound structured wall tubes includes an assembly frame, a horizontal support arm, an inclined support arm, a flame-spraying mechanism, and an infrared heating mechanism. A truss is provided at the lower end of the assembly frame; The horizontal support arm is connected to the assembly frame via a Y-axis drive mechanism. The Y-axis drive mechanism includes a Y-axis drive motor, a Y-axis adjusting screw, a Y-axis adjusting sleeve, a Y-axis guide rail, and a Y-axis slider. The Y-axis drive motor is fixedly mounted on one side of the assembly frame. The Y-axis adjusting screw is rotatably connected inside the assembly frame. One end of the Y-axis adjusting screw extends to the outside of the assembly frame and is connected to the output shaft of the Y-axis drive motor. The Y-axis adjusting sleeve is threadedly engaged with the Y-axis adjusting screw. The Y-axis adjusting sleeve is fixedly connected to the lower surface of the horizontal support arm. The Y-axis drive rod is slidably connected inside the horizontal support arm. The Y-axis guide rail is fixedly connected to the upper surface of the assembly frame. The Y-axis slider is fixedly connected to the lower surface of the horizontal support arm and is slidably engaged with the Y-axis guide rail. The inclined support arm is connected to the horizontal support arm via an X-axis drive mechanism. The X-axis drive mechanism includes an X-axis drive motor, an X-axis adjusting screw, and an X-axis drive frame. The X-axis drive motor is fixedly mounted at the end of the horizontal support arm. The X-axis adjusting screw is rotatably connected inside the horizontal support arm. One end of the X-axis adjusting screw extends to the outside of the horizontal support arm and is connected to the output shaft of the X-axis drive motor. The X-axis drive frame is slidably connected inside the horizontal support arm. An X-axis adjusting sleeve that engages with the threaded drive of the X-axis adjusting screw is provided on the X-axis drive frame. The inclined support rod is fixedly connected to the end of the X-axis drive frame that extends to the outside of the horizontal support arm. An inclined drive mechanism is provided on the inclined support arm. The inclined drive mechanism includes an inclined drive motor, an inclined adjusting screw, and an inclined drive frame. The inclined drive motor is fixedly installed at the end of the inclined support arm. The inclined adjusting screw is rotatably connected inside the inclined support arm. One end of the inclined adjusting screw extends to the outside of the inclined support arm and is connected to the output shaft of the inclined drive motor. The inclined drive frame is slidably connected inside the inclined support arm. An inclined adjusting sleeve that is threadedly engaged with the inclined adjusting screw is provided on the inclined drive frame. A transition frame is provided at one end of the inclined drive frame extending to the inclined support arm. Both the flame-throwing mechanism and the infrared heating mechanism are mounted on the adapter frame.

[0009] Furthermore, the flame-spraying mechanism includes an upper flame-spraying group, a lower flame-spraying group, an upper electric push rod, and a lower electric push rod. The L-shaped mounting plates on the rear sides of the upper and lower flame-spraying groups are rotatably connected to the adapter frame. The bodies of the upper and lower electric push rods are rotatably connected to the adapter frame. The telescopic rod of the upper electric push rod is rotatably connected to the L-shaped mounting plate of the upper flame-spraying group, and the telescopic rod of the lower electric push rod is rotatably connected to the L-shaped mounting plate of the lower flame-spraying group. When the telescopic rod of the upper or lower electric push rod extends or retracts, the upper or lower flame-spraying group adjusts its angle.

[0010] Furthermore, the infrared heating mechanism includes a vertical plate, a front and rear adjusting cylinder, an upper infrared heating lamp group, a lower infrared heating lamp group, an upper adjusting cylinder, and a lower adjusting cylinder. A linear slide rail is provided on one side of the vertical plate, and a linear slider is fixedly connected to the adapter frame. The linear slider slides in cooperation with the linear slide rail. The cylinder body of the front and rear adjusting cylinder is fixedly connected to the vertical plate, and the telescopic rod of the front and rear adjusting cylinder is fixedly connected to the adapter frame. The upper infrared heating lamp group and the lower infrared heating lamp group are rotatably connected to the vertical plate, and the cylinder bodies of the upper adjusting cylinder and the lower adjusting cylinder are rotatably connected to the vertical plate. The piston rod of the upper adjusting cylinder is rotatably connected to the back of the upper infrared heating lamp group, and the piston rod of the lower adjusting cylinder is rotatably connected to the back of the lower infrared heating lamp group. When the telescopic rod of the front and rear adjusting cylinder extends or retracts, the upper infrared heating lamp group and the lower infrared heating lamp group move back and forth with the upright plate. When the telescopic rod of the piston rod of the upper adjusting cylinder or the piston rod of the lower adjusting cylinder extends or retracts, the upper infrared heating lamp group or the lower infrared heating lamp group adjusts its angle.

[0011] Furthermore, the lower end of the horizontal support arm is fixedly connected to the first detection plate, and two first metal proximity switches are provided on the assembly frame to sense the position of the first detection plate.

[0012] Furthermore, the horizontal support arm is provided with an elongated hole along its length, and a second detection plate is provided at the upper end of the horizontal drive rod. The second detection plate passes through the elongated hole, and two second metal proximity switches are provided on the outside of the horizontal support arm for sensing the position of the second detection plate.

[0013] Furthermore, the inclined support arm is provided with an elongated hole along its length, and a third detection plate is provided at the upper end of the inclined drive frame. The third detection plate passes through the elongated hole, and two third metal proximity switches are provided on the outside of the inclined support arm for sensing the position of the third detection plate.

[0014] Furthermore, a heat insulation plate is provided on the adapter frame, and the heat insulation plate is located between the flame-spraying mechanism and the infrared heating mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a novel heating device for spiral wound structured wall tubes. By configuring a truss, the position of the entire heating device is raised, avoiding spatial interference with the extruder and expanding the placement space for other equipment. The heating point can be adjusted not only in three directions—X, Y, and oblique—but also by adjusting the angle of the burner head via an electric push rod and the angle of the infrared heating lamp assembly via an adjusting cylinder. During the burner assembly's heating, the two infrared heating units are retracted by the front and rear adjusting cylinders, moving them away from the high-temperature area of ​​the burner head to prevent the infrared heating lamps from being damaged. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a heating device in the prior art; Figure 2 This is a diagram illustrating the usage status of a novel heating device for spiral wound structure wall tubes, as shown in the embodiment. Figure 3 This is a schematic diagram of the structure of a novel heating device for a wound-wall tube, as shown in the embodiment. Figure 4 This is a cross-sectional view of a novel heating device for use with wound structure wall tubes, as illustrated in the embodiment. Figure 5 This is a schematic diagram of the electric actuator and L-shaped mounting plate in the embodiment.

[0017] Explanation of key component symbols: 10-Assembly frame, 11-Truss.

[0018] 20 - Horizontal support arm, 21 - Y-axis drive motor, 22 - Y-axis adjusting screw, 23 - Y-axis adjusting sleeve, 24 - Y-axis guide rail, 25 - Y-axis slider; 30- Inclined support arm, 31- X-axis drive motor, 32- X-axis adjusting screw, 33- X-axis drive frame, 34- X-axis adjusting sleeve, 35- Inclined drive motor, 36- Inclined adjusting screw, 37- Inclined drive frame, 38- Inclined adjusting sleeve, 39- Adapter frame; 41-First detection board, 42-First metal proximity switch, 43-Second detection board, 44-Second metal proximity switch, 45-Third detection board, 46-Third metal proximity switch; 51-Upper flamethrower assembly, 52-Lower flamethrower assembly, 53-Upper electric push rod, 54-Lower electric push rod, 55-L-shaped mounting plate; 61-Upright plate, 62-Front and rear adjustment cylinder, 63-Upper infrared heating lamp assembly, 64-Lower infrared heating lamp assembly, 65-Upper adjustment cylinder, 66-Lower adjustment cylinder, 67-Linear slide rail, 68-Linear slider; 70 - Insulation board. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 2 to 5This utility model provides a novel heating device for spiral wound structure wall tubes, including an assembly frame 10, a horizontal support arm 20, an inclined support arm 30, a flame-spraying mechanism, and an infrared heating mechanism.

[0021] A truss 11 is provided at the lower end of the assembly frame 10.

[0022] The horizontal support arm 20 is connected to the assembly frame 10 via a Y-axis drive mechanism. The Y-axis drive mechanism includes a Y-axis drive motor 21, a Y-axis adjusting screw 22, a Y-axis adjusting sleeve 23, a Y-axis guide rail 24, and a Y-axis slider 25. The Y-axis drive motor 21 is fixedly mounted on one side of the assembly frame 10. The Y-axis adjusting screw 22 is rotatably connected inside the assembly frame 10. One end of the Y-axis adjusting screw 22 extends to the outside of the assembly frame 10 and is connected to the output shaft of the Y-axis drive motor 21. The Y-axis adjusting sleeve 23 is threadedly engaged with the Y-axis adjusting screw 22. The Y-axis adjusting sleeve 23 is fixedly connected to the lower surface of the horizontal support arm 20. The Y-axis drive screw 22 is slidably connected inside the horizontal support arm 20. The Y-axis guide rail 24 is fixedly connected to the upper surface of the assembly frame 10. The Y-axis slider 25 is fixedly connected to the lower surface of the horizontal support arm 20. The Y-axis slider 25 is slidably engaged with the Y-axis guide rail 24.

[0023] The inclined support arm 30 is connected to the horizontal support arm 20 via an X-axis drive mechanism. The X-axis drive mechanism includes an X-axis drive motor 31, an X-axis adjusting screw 32, and an X-axis drive frame 33. The X-axis drive motor 31 is fixedly mounted at the end of the horizontal support arm 20. The X-axis adjusting screw 32 is rotatably connected inside the horizontal support arm 20. One end of the X-axis adjusting screw 32 extends to the outside of the horizontal support arm 20 and is connected to the output shaft of the X-axis drive motor 31. The X-axis drive frame 33 is slidably connected inside the horizontal support arm 20. An X-axis adjusting sleeve 34 is provided on the X-axis drive frame 33, which is threadedly engaged with the X-axis adjusting screw 32. The inclined support rod 30 is fixedly connected to one end of the X-axis drive frame 33 that extends to the outside of the horizontal support arm 20.

[0024] An inclined drive mechanism is provided on the inclined support arm 30. The inclined drive mechanism includes an inclined drive motor 35, an inclined adjusting screw 36, and an inclined drive frame 37. The inclined drive motor 35 is fixedly installed at the end of the inclined support arm 30. The inclined adjusting screw 36 is rotatably connected inside the inclined support arm 30. One end of the inclined adjusting screw 36 extends to the outside of the inclined support arm 30 and is connected to the output shaft of the inclined drive motor 35. The inclined drive frame 37 is slidably connected inside the inclined support arm 30. An inclined adjusting sleeve 38 is provided on the inclined drive frame 37 to engage with the inclined adjusting screw 36 through a threaded transmission. An adapter frame 39 is provided at one end of the inclined drive frame 37 extending to the inclined support arm 30.

[0025] The flame-spraying mechanism includes an upper flame-spraying assembly 51, a lower flame-spraying assembly 52, an upper electric push rod 53, and a lower electric push rod 54. The L-shaped mounting plates 55 on the rear sides of the upper flame-spraying assembly 51 and the lower flame-spraying assembly 52 are rotatably connected to the adapter frame 39. The bodies of the upper electric push rod 53 and the lower electric push rod 54 are rotatably connected to the adapter frame 39. The telescopic rod of the upper electric push rod 53 is rotatably connected to the L-shaped mounting plate 55 of the upper flame-spraying assembly 51, and the telescopic rod of the lower electric push rod 54 is rotatably connected to the L-shaped mounting plate 55 of the lower flame-spraying assembly 52. ​​When the telescopic rod of the upper electric push rod 53 or the telescopic rod of the lower electric push rod 54 extends or retracts, the upper flame-spraying assembly 51 or the lower flame-spraying assembly 52 is adjusted in angle.

[0026] The infrared heating mechanism includes a vertical plate 61, a front and rear adjusting cylinder 62, an upper infrared heating lamp group 63, a lower infrared heating lamp group 64, an upper adjusting cylinder 65, and a lower adjusting cylinder 66. A linear slide rail 67 is provided on one side of the vertical plate 61, and a linear slider 68 is fixedly connected to the adapter frame 39. The linear slider 68 slides in cooperation with the linear slide rail 67. The cylinder body of the front and rear adjusting cylinder 62 is fixedly connected to the vertical plate 61, and the telescopic rod of the front and rear adjusting cylinder 62 is fixedly connected to the adapter frame 39. The upper infrared heating lamp group 63 and the lower infrared heating lamp group 64 are rotatably connected to the vertical plate 61, and the cylinder bodies of the upper adjusting cylinder 65 and the lower adjusting cylinder 66 are rotatably connected to the vertical plate 61. The piston rod of the upper adjusting cylinder 65 is rotatably connected to the back of the upper infrared heating lamp group 63, and the piston rod of the lower adjusting cylinder 66 is rotatably connected to the back of the lower infrared heating lamp group 64.

[0027] When the telescopic rod of the front and rear adjusting cylinder 62 extends or retracts, the upper infrared heating lamp group 63 and the lower infrared heating lamp group 64 move back and forth with the upright plate 61. When the telescopic rod of the piston rod of the upper adjusting cylinder 65 or the piston rod of the lower adjusting cylinder 66 extends or retracts, the upper infrared heating lamp group 63 or the lower infrared heating lamp group 64 adjusts its angle.

[0028] As a preferred embodiment, the lower end of the horizontal support arm 20 is fixedly connected to the first detection plate 41, and two first metal proximity switches 42 are provided on the assembly frame 30 to sense the initial position and maximum stroke position of the first detection plate 41.

[0029] As a preferred embodiment, the horizontal support arm 20 is provided with an elongated hole along its length, and a second detection plate 43 is provided at the upper end of the X-axis drive frame 33. The second detection plate 43 passes through the elongated hole, and two second metal proximity switches 44 are provided on the outside of the horizontal support arm 20 to sense the initial position and maximum stroke position of the second detection plate 43.

[0030] As a preferred embodiment, the inclined support arm 30 is provided with an elongated hole along its length, and a third detection plate 45 is provided at the upper end of the inclined drive frame. The third detection plate 45 passes through the elongated hole, and two third metal proximity switches 46 are provided on the outside of the inclined support arm 30 to sense the initial position and maximum stroke position of the third detection plate 45.

[0031] As a preferred embodiment, a heat insulation plate 70 is provided on the adapter frame 39, and the heat insulation plate 70 is located between the flame-spraying mechanism and the infrared heating mechanism.

[0032] The novel heating device for spiral wound structured wall tubes disclosed in this embodiment is used in the following way: Start the X-axis drive motor 31 to adjust the position of the flame-spraying mechanism and the infrared heating mechanism in the X-axis direction. Start the oblique drive motor 35 to adjust the oblique position of the flame-spraying mechanism and the infrared heating mechanism. Start the upper electric push rod 53 and the lower electric push rod 54 to adjust the angle of the upper flame-spraying group 51 and the lower flame-spraying group 52. At the same time, slowly correct the X-axis and oblique positions until they are adjusted to the appropriate positions and angles.

[0033] Start the Y-axis drive motor 21 to adjust the position of the flame-spraying mechanism and the infrared heating mechanism in the Y-axis direction, and determine the heating position of the flame-spraying mechanism and the infrared heating mechanism in the axial direction of the roller mold.

[0034] Start the active support roller motor of the winding table, the roller mold starts to rotate, the flame mechanism is ignited, and the roller mold is heated to a suitable temperature. Start the extruder to extrude molten plastic, and winding begins. The winding table and the roller mold move synchronously along the axial direction, and the molten plastic is continuously wound around the outside of the roller mold.

[0035] After the first layer is wrapped, the flame-spraying mechanism is turned off, and the wrapping table returns to its initial position.

[0036] The piston rod of the front and rear adjusting cylinder 62 extends, and the upper infrared heating lamp group 63 and the lower infrared heating lamp group 64 move toward the side closer to the roller mold along with the upright plate 61. The piston rod of the upper adjusting cylinder 65 drives the upper infrared heating lamp group 63 to rotate on the upright plate 61, and the piston rod of the lower adjusting cylinder 66 drives the lower infrared heating lamp group 64 to rotate on the upright plate 61, thereby realizing the angle adjustment of the two sets of infrared heating lamp groups.

[0037] Start the active support roller motor of the winding table, the roller mold starts to rotate, start the infrared heating lamp group to heat, start the extruder to extrude molten plastic, and the second layer of winding begins.

[0038] Subsequent multi-layer winding is similar to the second layer winding, until the thickness required by the customer is achieved.

[0039] The final layer is a corrugated pipe wrapped with molten plastic.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel heating device for spiral wound structural wall tubes, characterized in that: Includes an assembly frame, horizontal support arm, inclined support arm, flame-spraying mechanism, and infrared heating mechanism; A truss is provided at the lower end of the assembly frame; The horizontal support arm is connected to the assembly frame via a Y-axis drive mechanism. The Y-axis drive mechanism includes a Y-axis drive motor, a Y-axis adjusting screw, a Y-axis adjusting sleeve, a Y-axis guide rail, and a Y-axis slider. The Y-axis drive motor is fixedly mounted on one side of the assembly frame. The Y-axis adjusting screw is rotatably connected inside the assembly frame. One end of the Y-axis adjusting screw extends to the outside of the assembly frame and is connected to the output shaft of the Y-axis drive motor. The Y-axis adjusting sleeve is threadedly engaged with the Y-axis adjusting screw. The Y-axis adjusting sleeve is fixedly connected to the lower surface of the horizontal support arm. The Y-axis drive rod is slidably connected inside the horizontal support arm. The Y-axis guide rail is fixedly connected to the upper surface of the assembly frame. The Y-axis slider is fixedly connected to the lower surface of the horizontal support arm and is slidably engaged with the Y-axis guide rail. The inclined support arm is connected to the horizontal support arm via an X-axis drive mechanism. The X-axis drive mechanism includes an X-axis drive motor, an X-axis adjusting screw, and an X-axis drive frame. The X-axis drive motor is fixedly mounted at the end of the horizontal support arm. The X-axis adjusting screw is rotatably connected inside the horizontal support arm. One end of the X-axis adjusting screw extends to the outside of the horizontal support arm and is connected to the output shaft of the X-axis drive motor. The X-axis drive frame is slidably connected inside the horizontal support arm. An X-axis adjusting sleeve that engages with the threaded drive of the X-axis adjusting screw is provided on the X-axis drive frame. The inclined support rod is fixedly connected to the end of the X-axis drive frame that extends to the outside of the horizontal support arm. An inclined drive mechanism is provided on the inclined support arm. The inclined drive mechanism includes an inclined drive motor, an inclined adjusting screw, and an inclined drive frame. The inclined drive motor is fixedly installed at the end of the inclined support arm. The inclined adjusting screw is rotatably connected inside the inclined support arm. One end of the inclined adjusting screw extends to the outside of the inclined support arm and is connected to the output shaft of the inclined drive motor. The inclined drive frame is slidably connected inside the inclined support arm. An inclined adjusting sleeve that is threadedly engaged with the inclined adjusting screw is provided on the inclined drive frame. A transition frame is provided at one end of the inclined drive frame extending to the inclined support arm. Both the flame-throwing mechanism and the infrared heating mechanism are mounted on the adapter frame.

2. The novel heating device for a wound-walled tube according to claim 1, characterized in that: The flame-spraying mechanism includes an upper flame-spraying assembly, a lower flame-spraying assembly, an upper electric push rod, and a lower electric push rod. The L-shaped mounting plates on the rear sides of the upper and lower flame-spraying assemblies are rotatably connected to the adapter frame. The bodies of the upper and lower electric push rods are rotatably connected to the adapter frame. The telescopic rod of the upper electric push rod is rotatably connected to the L-shaped mounting plate of the upper flame-spraying assembly, and the telescopic rod of the lower electric push rod is rotatably connected to the L-shaped mounting plate of the lower flame-spraying assembly. When the telescopic rod of the upper or lower electric push rod extends or retracts, the upper or lower flame-spraying assembly adjusts its angle.

3. A novel heating device for a wound-walled tube according to claim 1, characterized in that: The infrared heating mechanism includes a vertical plate, front and rear adjusting cylinders, an upper infrared heating lamp group, a lower infrared heating lamp group, an upper adjusting cylinder, and a lower adjusting cylinder. A linear slide rail is provided on one side of the vertical plate, and a linear slider is fixedly connected to the adapter frame. The linear slider slides in cooperation with the linear slide rail. The cylinder body of the front and rear adjusting cylinder is fixedly connected to the vertical plate, and the telescopic rod of the front and rear adjusting cylinder is fixedly connected to the adapter frame. The upper and lower infrared heating lamp groups are rotatably connected to the vertical plate, and the cylinder bodies of the upper and lower adjusting cylinders are rotatably connected to the vertical plate. The piston rod of the upper adjusting cylinder is rotatably connected to the back of the upper infrared heating lamp group, and the piston rod of the lower adjusting cylinder is rotatably connected to the back of the lower infrared heating lamp group. When the telescopic rod of the front and rear adjusting cylinder extends or retracts, the upper infrared heating lamp group and the lower infrared heating lamp group move back and forth with the upright plate. When the telescopic rod of the piston rod of the upper adjusting cylinder or the piston rod of the lower adjusting cylinder extends or retracts, the upper infrared heating lamp group or the lower infrared heating lamp group adjusts its angle.

4. A novel heating device for a wound-walled tube according to claim 1, characterized in that: The lower end of the horizontal support arm is fixedly connected to the first detection plate, and two first metal proximity switches are provided on the assembly frame to sense the position of the first detection plate.

5. A novel heating device for a wound-walled tube according to claim 1, characterized in that: The horizontal support arm has an elongated hole along its length. A second detection plate is provided at the upper end of the horizontal drive rod, and the second detection plate passes through the elongated hole. Two second metal proximity switches are provided on the outside of the horizontal support arm to sense the position of the second detection plate.

6. A novel heating device for a wound-walled tube according to claim 1, characterized in that: The inclined support arm has an elongated hole along its length. A third detection plate is provided at the upper end of the inclined drive frame. The third detection plate passes through the elongated hole. Two third metal proximity switches are provided on the outside of the inclined support arm to sense the position of the third detection plate.

7. A novel heating device for a wound-walled tube according to claim 1, characterized in that: The adapter frame is equipped with a heat insulation plate, which is located between the flame-spraying mechanism and the infrared heating mechanism.

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