Clamping type pipe heat treatment equipment

Abstract

The invention relates to the technical field of pipe heat treatment, in particular to clamping type pipe heat treatment equipment. The device comprises a box body, the top of the box body is open, a heater and an electric footstock are arranged in the box body, and a supporting assembly is arranged below the electric footstock. Pipes are placed on the surface of a friction roller, the ends of the electric footstock are controlled to move relatively, and the electric footstock is inserted into a pipe through hole to be pushed until the pipes are located in the center of the friction roller; a servo motor is controlled to drive a friction roller to coaxially rotate, the friction roller drives a pipe to rotate in a friction mode when rotating, meanwhile, the output end of an air cylinder is controlled to drive a pressing plate to move in the vertical direction, a roller rod arranged in the pressing plate is attached to the surface of the pipe to clamp and limit the pipe, and the pipe is prevented from jumping when the end of the pipe rotates due to friction force of the friction roller; therefore, uniform rotation of the pipe is guaranteed, the pipe is uniformly heated, and the heat treatment effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe heat treatment, and more specifically, to a clamping type pipe heat treatment device. Background Art

[0002] Stainless steel pipes are widely used in modern industries, construction, decoration and other fields. In order to meet the performance requirements of stainless steel pipes in different application scenarios, heat treatment is a crucial processing technology. Through heat treatment, the organizational structure of stainless steel pipes can be improved, and their strength, hardness, toughness, corrosion resistance and other properties can be enhanced.

[0003] Regarding heat treatment devices, there are many existing technologies, for example: Chinese Patent Publication No. CN221877110U discloses a heat treatment device for high elongation pipes, which includes a device and a control panel provided on one surface of the device. An explosion-proof device is provided at one end of the device. Input ports and output ports are respectively opened at both ends of the device. One end of the input port is connected to a transport pipe. A heating system is provided outside the transport pipe. A cooling system is provided on one side of the heating system. A quenching tank is provided on one side of the transport pipe. In this invention, the distance between the heating system and the cooling system enables the pipe to have sufficient time to complete solid solution after being heated, avoiding incomplete solid solution of the pipe and thus affecting the elongation and toughness of the pipe. At the same time, by making the quenching medium flow, the temperature of the quenching medium can be made consistent, and the reflux medium can also be filtered through a filter screen to remove the residual metal slag in the medium, ensuring that the quality of quenching will not be affected during subsequent quenching.

[0004] However, in the actual use process, there are still some problems: 1. During the use of current traditional heat treatment equipment, the traditional heat treatment equipment lacks an effective cleaning mechanism for impurity particles on the surface of the pipe. During the processing, storage and transportation of the pipe, various impurities are easily attached to its surface, such as metal debris, dust, oil stains, etc. These impurity particles will seriously interfere with the uniform transfer of heat on the surface of the pipe during heat treatment, and then hinder the overall heating process of the pipe, making the performance of the heat-treated pipe unable to meet the expected standards. 2. Traditional equipment usually directly places the pipe on a heating plate for heat treatment operations. However, the heating plate itself has an inherent problem of uneven temperature distribution. During the heating process, the temperatures of different regions on its surface often have obvious differences, which leads to inconsistent heating degrees of each part of the pipe in contact with the heating plate. The part of the pipe close to the high-temperature region of the heating plate heats up too fast, while the part in the low-temperature region heats up insufficiently. This uneven heating condition makes the internal organizational structure and performance of the pipe show significant inconsistencies after heat treatment, greatly reducing the product quality and use reliability of the pipe.

[0005] In view of this, we propose a solution based on a clamping type pipe heat treatment device. Summary of the Invention

[0006] The purpose of the present invention is to provide a clamping type pipe heat treatment device to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention aims to provide a clamping type pipe heat treatment device, including a box body. The box body is open at the top. Inside the box body, there are a heater and an electric top seat. On the side wall of the box body, there is a guide rail. A moving seat is slidably arranged on the surface of the guide rail. A sealing plate is arranged on the surface of the moving seat. A cylinder is arranged on the top of the sealing plate. A pressing plate is arranged at the end of the piston rod of the cylinder. Inside the pressing plate, there are roller rods. Below the electric top seat, there is a support assembly. The support assembly includes an electric telescopic rod arranged outside the box body. The piston rod at the end of the electric telescopic rod penetrates through the box body and a V-shaped seat is arranged at the end. Friction rollers are arranged at the ends of the V-shaped seat. The friction rollers support the bottom sides of both sides of the pipe. A servo motor is arranged on one side of the V-shaped seat. The output shaft of the servo motor drives the friction rollers to rotate coaxially. A cleaning assembly is arranged at the bottom of the box body.

[0008] As a further improvement of this technical solution, inside the pressing plate, there are roller rods. The roller rods are arranged in an annular array and are in contact with the surface of the pipe.

[0009] As a further improvement of this technical solution, the cleaning assembly includes a first motor arranged on the outer wall of the box body. The output end of the first motor penetrates through the box body and a first lead screw is arranged at the end. A base is arranged on the surface of the first lead screw. When the first lead screw rotates, it drives the base to move horizontally on its surface.

[0010] As a further improvement of this technical solution, a column cylinder is arranged on the surface of the base. A second motor is arranged below the column cylinder. A second lead screw is arranged at the output end of the second motor. A sliding column is arranged on the surface of the second lead screw. The sliding column moves inside the column cylinder. A grinding plate is arranged at the top of the sliding column. The grinding plate grinds and removes impurities on the surface of the rotating pipe.

[0011] As a further improvement of this technical solution, support plates are arranged on both sides of the grinding plate. A collection box is arranged on the surface of the support plates. When the grinding plate moves to grind the surface of the pipe body, the ground impurity particles fall into the collection box for automatic collection.

[0012] As a further improvement of this technical solution, hollow columns are arranged on both sides of the collection box. A limiting rod is slidably arranged on the inner wall of the hollow column. A compression spring is arranged between the hollow column and the limiting rod. The limiting rod squeezes and limits both sides of the collection box.

[0013] As a further improvement of the technical solution, an electric top seat is provided above the friction roller. The electric top seats are symmetrically arranged and are inserted into both sides of the pipe through the electric top seats to automatically adjust its position.

[0014] As a further improvement of the technical solution, first racks are provided on both sides of the bottom of the sliding column, and reinforcement components are provided on the sides of the first racks. The reinforcement components are used to reinforce the center of the pipe.

[0015] As a further improvement of the technical solution, the reinforcement component includes a rotating gear provided on one side of the first rack, a limiting column provided on one side of the rotating gear, and a second rack slidably provided inside the limiting column.

[0016] As a further improvement of the technical solution, a support roller is provided on the top of the second rack, and a return spring is provided between the second rack and the base.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this clamping-type pipe heat treatment equipment, by placing the pipe on the surface of the friction roller, controlling the relative movement of the ends of the electric top seats, inserting the electric top seats into the through holes of the pipe to push until the pipe is at the center of the friction roller, controlling the servo motor to drive the friction roller to rotate coaxially, when the friction roller rotates, it drives the pipe to rotate by friction. At the same time, by controlling the output end of the cylinder to drive the pressing plate to move in the vertical direction, the roller rod provided inside the pressing plate fits the surface of the pipe to clamp and limit it, so that when the end of the pipe rotates due to the frictional force of the friction roller, it avoids jumping, thereby ensuring the uniform rotation of the pipe, making the pipe heat evenly, and improving the heat treatment effect.

[0018] 2. In this clamping-type pipe heat treatment equipment, by controlling the output end of the first motor to drive the first lead screw to rotate, when the first lead screw rotates, it drives the base to move horizontally. During the movement of the base, the output shaft of the second motor drives the second lead screw to rotate coaxially. When the second lead screw rotates, it drives the sliding column to move in the vertical direction. When the sliding column drives the grinding plate to move to the bottom of the pipe, the grinding plate moves horizontally to grind the impurity particles on the surface of the pipe, so that the impurity particles fall off from the surface of the pipe, thereby ensuring the uniformity of heat absorption during the heat treatment of the pipe. By automatically grinding the impurity particles with the grinding plate, the labor intensity of the operators is reduced.

[0019] 3. In the clamping type pipe heat treatment equipment, by controlling the output end of the second motor to drive the second lead screw to rotate in the reverse direction, when the second lead screw rotates, it drives the sliding column to move downward in the vertical direction. During the movement of the sliding column, it drives the grinding plate away from the bottom of the pipe. When the sliding column moves downward in the vertical direction, the first racks provided on both sides of it move downward simultaneously. During the downward movement of the first racks, they drive the rotating gear to mesh and rotate. When the rotating gear rotates, it drives the second rack provided on one side of it to move in the opposite direction to the first rack, that is, the second rack moves upward in the vertical direction. During the movement of the second rack, it drives the support roller to move until the support roller moves to the bottom of the pipe, so as to support the center of the pipe and avoid bending deformation during the heat treatment of the pipe, thereby ensuring the quality of the pipe heat treatment. Description of the Drawings

[0020] Figure 1 is the overall structure sectional view of the present invention; Figure 2 is the overall structure schematic diagram of the present invention; Figure 3 is the structure schematic diagram of the impurity removal component of the present invention; Figure 4 is the structure schematic diagram of the reinforcement component of the present invention; Figure 5 is the sectional view of the impurity removal component of the present invention; Figure 6 is the structure schematic diagram of the pressing plate of the present invention; Figure 7 is the structure schematic diagram of the collection box of the present invention; Figure 8 is the structure schematic diagram of the support component of the present invention.

[0021] The meanings of each label in the figure are as follows: 100, box body; 101, heater; 102, electric top seat; 200, guide rail; 201, moving seat; 202, sealing plate; 203, cylinder; 204, pressing plate; 205, roller rod; 300, impurity removal component; 301, first motor; 302, first lead screw; 303, base; 304, cylinder barrel; 305, second motor; 306, second lead screw; 307, sliding column; 308, grinding plate; 309, support plate; 310, collection box; 311, hollow column; 312, limit rod; 313, compression spring; 314, first rack; 400, reinforcement component; 401, rotating gear; 402, limit column; 403, second rack; 404, support roller; 405, return spring; 500, support component; 501, electric telescopic rod; 502, V-shaped seat; 503, friction roller; 504, servo motor. Detailed Embodiments

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0024] The purpose of this embodiment is to provide a clamping-type pipe heat treatment device. Refer to Figures 1-8 As shown, it includes a box body 100. The box body 100 is open at the top. A heater 101 and an electric top seat 102 are provided inside the box body 100. A guide rail 200 is provided on the side wall of the box body 100. A moving seat 201 is slidably provided on the surface of the guide rail 200. A sealing plate 202 is provided on the surface of the moving seat 201. A cylinder 203 is provided on the top of the sealing plate 202. A pressing plate 204 is provided at the end of the piston rod of the cylinder 203. A roller rod 205 is provided inside the pressing plate 204. A support assembly 500 is provided below the electric top seat 102. The support assembly 500 includes an electric telescopic rod 501 provided outside the box body 100. The piston rod at the end of the electric telescopic rod 501 penetrates through the box body 100 and a V-shaped seat 502 is provided at the end. Friction rollers 503 are provided at the ends of the V-shaped seat 502. The friction rollers 503 support the bottom sides of the pipe. A servo motor 504 is provided on one side of the V-shaped seat 502. The output shaft of the servo motor 504 drives the friction rollers 503 to rotate coaxially. An impurity removal assembly 300 is provided at the bottom of the box body 100.

[0025] Considering that when heat-treating a pipe, in order to facilitate the quick clamping of the pipe and make the pipe roll uniformly inside the box body 100 for heat treatment, therefore, a roller rod 205 is provided inside the pressing plate 204. The roller rods 205 are arranged in an annular array, and the roller rods 205 are in contact with the surface of the pipe. By passing through and placing on the surface of the friction roller 503 provided at the end of the V-shaped seat 502, and by controlling the servo motor 504 to drive the friction roller 503 to rotate coaxially, when the friction roller 503 rotates, it drives the pipe to rotate by friction. At the same time, by controlling the output end of the cylinder 203 to drive the pressing plate 204 to move in the vertical direction, the roller rods 205 provided inside the pressing plate 204 are in contact with the surface of the pipe to limit it, so that when the end of the pipe rotates due to the frictional force of the friction roller 503, it avoids jumping, thereby ensuring the uniform rotation of the pipe, making the pipe heat evenly, and improving the heat treatment effect.

[0026] Impurity particles may hinder heat transfer, resulting in uneven heating of the pipe surface, and further affecting the uniformity of the structure and properties after heat treatment. Before heat treatment, it is usually necessary to remove impurities from the pipe, which increases the labor intensity of the operators. Therefore, the impurity removal assembly 300 includes a first motor 301 provided on the outer wall of the box body 100. The output end of the first motor 301 passes through the box body 100 and a first lead screw 302 is provided at the end. A base 303 is provided on the surface of the first lead screw 302. When the first lead screw 302 rotates, it drives the base 303 to move horizontally on its surface. A column cylinder 304 is provided on the surface of the base 303. A second motor 305 is provided below the column cylinder 304. A second lead screw 306 is provided at the output end of the second motor 305. A sliding column 307 is provided on the surface of the second lead screw 306. The sliding column 307 moves inside the column cylinder 304. A polishing plate 308 is provided at the top of the sliding column 307. The polishing plate 308 polishes and removes impurities on the surface of the rotating pipe. When the stainless steel pipe is placed on the surface of the servo motor 504 and rotates uniformly, by controlling the output end of the first motor 301 to drive the first lead screw 302 to rotate, when the first lead screw 302 rotates, it drives the base 303 to move horizontally. During the movement of the base 303, the output shaft of the second motor 305 drives the second lead screw 306 to rotate coaxially. When the second lead screw 306 rotates, it drives the sliding column 307 to move in the vertical direction. When the sliding column 307 drives the polishing plate 308 to move to the bottom of the pipe, the polishing plate 308 polishes the impurity particles on the surface of the pipe during horizontal movement, so that the impurity particles fall off from the surface of the pipe, thereby ensuring the uniformity of heat absorption during the heat treatment of the pipe. By automatically polishing the impurity particles with the polishing plate 308, the labor intensity of the operators is reduced.

[0027] During the process of grinding the impurity particles on the surface of the pipe, the impurity particles on the pipe surface fall inside the box body 100, which is likely to pollute the internal environment of the box body 100, cause damage to other components, and affect the service life. Therefore, support plates 309 are provided on both sides of the grinding plate 308, and a collection box 310 is provided on the surface of the support plate 309. When the grinding plate 308 moves to grind the surface of the pipe body, the ground impurity particles fall into the collection box 310 for automatic collection. By placing the collection box 310 on both sides of the grinding plate 308, when the grinding plate 308 moves to grind the surface of the pipe, the impurity particles on the pipe surface fall into the collection box 310 for collection, avoiding the pollution of the internal environment of the box body 100 by the impurity particles, thereby improving the service life of the box body 100.

[0028] When the collection box 310 is moving, it is likely to slide off the surface of the support plate 309 due to inertia. Therefore, hollow columns 311 are provided on both sides of the collection box 310, a limiting rod 312 is slidably provided on the inner wall of the hollow column 311, and a compression spring 313 is provided between the hollow column 311 and the limiting rod 312. The limiting rod 312 squeezes and limits both sides of the collection box 310. Hollow columns 311 are provided on both sides of the collection box 310, a limiting rod 312 is slidably provided on the inner wall of the hollow column 311, and a compression spring 313 is provided between the hollow column 311 and the limiting rod 312. The limiting rod 312 squeezes and limits both sides of the collection box 310. When placing the collection box 310, by pressing the limiting rod 312 to slide on the inner wall of the hollow column 311, the compression spring 313 provided inside the hollow column 311 is squeezed during the sliding process of the limiting rod 312. The space between the limiting rods 312 increases during the sliding process, facilitating the placement of the collection box 310 on the surface of the support plate 309. When the placement of the collection box 310 is completed, the extrusion of the limiting rod 312 is stopped. At this time, the limiting rod 312 is reset under the action of the restoring force to limit and fix the side wall of the collection box 310, so that the collection box 310 remains stable during the movement process.

[0029] When placing the pipe, in order to quickly place it at the center of the friction roller 503 and make the pipe rotate at a constant speed, an electric top seat 102 is provided above the friction roller 503. The electric top seats 102 are symmetrically arranged. The position of the pipe is automatically adjusted by inserting the electric top seats 102 into both sides of the pipe. When the pipe is placed on the surface of the friction roller 503, by controlling the relative movement of the ends of the electric top seats 102, the electric top seats 102 are inserted into the through holes of the pipe to push until the pipe is at the center of the friction roller 503, facilitating driving the pipe to rotate at a constant speed.

[0030] When the impurities on the surface of the pipe are polished, during the heat treatment process of the pipe, due to the high temperature, the strength of the pipe decreases, and bending may occur at its center. In order to prevent the pipe from deforming during the heat treatment process and affecting the quality of the pipe, therefore, first racks 314 are provided on both sides of the bottom of the sliding column 307, and reinforcement components 400 are provided on the sides of the first racks 314. The reinforcement components 400 are used to reinforce the center of the pipe. The reinforcement components 400 include rotating gears 401 provided on one side of the first racks 314, limit posts 402 provided on one side of the rotating gears 401, second racks 403 slidably provided on the inner walls of the limit posts 402, support rollers 404 provided on the tops of the second racks 403, and return springs 405 provided between the second racks 403 and the base 303. Before the heat treatment, when the surface of the pipe is polished by the polishing plate 308 and completed, the polishing plate 308 moves to below the center of the pipe. Control the output end of the second motor 305 to drive the second lead screw 306 to rotate in the reverse direction. When the second lead screw 306 rotates, it drives the sliding column 307 to move downward in the vertical direction. During the movement of the sliding column 307, it drives the polishing plate 308 away from the bottom of the pipe. When the sliding column 307 moves downward in the vertical direction, the first racks 314 provided on both sides of it move downward at the same time. During the downward movement of the first racks 314, they drive the rotating gears 401 to mesh and rotate. When the rotating gears 401 rotate, they drive the second racks 403 provided on one side of them to move in the opposite direction to the first racks 314, that is, the second racks 403 move upward in the vertical direction. During the movement of the second racks 403, they drive the support rollers 404 to move until the support rollers 404 move to the bottom of the pipe, so as to support the center of the pipe by the support rollers 404, avoid bending deformation of the pipe during the heat treatment process, and thus ensure the quality of the heat treatment of the pipe.

[0031] During specific use, by placing the pipe on the surface of the friction roller 503, control the relative movement of the end of the electric top seat 102. The electric top seat 102 is inserted into the through hole of the pipe and pushed until the pipe is at the center of the friction roller 503. Control the servo motor 504 to drive the friction roller 503 to rotate coaxially. When the friction roller 503 rotates, it drives the pipe to rotate by friction. At the same time, control the output end of the cylinder 203 to drive the pressing plate 204 to move in the vertical direction, so that the roller rods 205 provided inside the pressing plate 204 are attached to the surface of the pipe to limit it, so as to prevent the pipe from jumping when the end of the pipe is rotated by the friction force of the friction roller 503, thereby ensuring the uniform rotation of the pipe, making the pipe heat evenly, and improving the heat treatment effect. By controlling the output end of the first motor 301 to drive the first lead screw 302 to rotate, when the first lead screw 302 rotates, it drives the base 303 to move horizontally. During the movement of the base 303, the output shaft of the second motor 305 drives the second lead screw 306 to rotate coaxially. When the second lead screw 306 rotates, it drives the sliding column 307 to move vertically. When the sliding column 307 drives the grinding plate 308 to move to the bottom of the pipe, as the grinding plate 308 moves horizontally, it grinds the impurity particles on the surface of the pipe, causing the impurity particles to fall off from the surface of the pipe, thereby ensuring the uniformity of heat absorption during the heat treatment of the pipe. By automatically grinding the impurity particles with the grinding plate 308, the labor intensity of the operators is reduced; When the grinding plate 308 moves to grind the surface of the pipe body, the ground impurity particles fall into the inside of the collection box 310 for automatic collection. By placing the collection boxes 310 on both sides of the grinding plate 308, when the grinding plate 308 moves to grind the surface of the pipe, the impurity particles on the surface of the pipe fall into the inside of the collection box 310 for collection, avoiding the contamination of the internal environment of the box body 100 by the impurity particles, thereby increasing the service life of the box body 100; When the grinding of the surface of the pipe by the grinding plate 308 is completed, control the output end of the second motor 305 to drive the second lead screw 306 to rotate in the reverse direction. When the second lead screw 306 rotates, it drives the sliding column 307 to move downward vertically. During the movement of the sliding column 307, the first rack 314 provided on both sides thereof moves downward at the same time. During the downward movement of the first rack 314, it drives the rotating gear 401 to mesh and rotate. When the rotating gear 401 rotates, it drives the second rack 403 provided on one side thereof to move in the opposite direction to the first rack 314, that is, the second rack 403 moves upward vertically. During the movement of the second rack 403, it drives the support roller 404 to move until the support roller 404 moves to the bottom of the pipe, thereby enabling the support roller 404 to support the center of the pipe, avoiding bending deformation during the heat treatment of the pipe, and thus ensuring the quality of the heat treatment of the pipe.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping-type pipe heat treatment device, characterized in that: It includes a box body which is open at the top. Inside the box body, there is a heater and an electric top seat. On the side wall of the box body, there are guide rails. A moving seat is slidably arranged on the surface of the guide rails. On the surface of the moving seat, there is a sealing plate. On the top of the sealing plate, there is a cylinder. At the end of the piston rod of the cylinder, there is a pressing plate. Inside the pressing plate, there are roller rods. Below the electric top seat, there is a support assembly. The support assembly includes an electric telescopic rod arranged outside the box body. The piston rod at the end of the electric telescopic rod penetrates the box body and there is a V-shaped seat at its end. Friction rollers are arranged at the ends of the V-shaped seat. The friction rollers support the bottom sides of both sides of the pipe. On one side of the V-shaped seat, there is a servo motor. The output shaft of the servo motor drives the friction rollers to rotate coaxially. At the bottom of the box body, there is a impurity removal assembly.

2. The clamping type pipe heat treatment equipment according to claim 1, characterized in that: Inside the pressing plate, there are roller rods which are arranged in an annular array and are in contact with the surface of the pipe.

3. The clamping-type pipe heat treatment equipment according to claim 1, characterized in that: The impurity removal assembly includes a first motor arranged on the outer wall of the box body. The output end of the first motor penetrates the box body and there is a first lead screw at its end. A base is arranged on the surface of the first lead screw. When the first lead screw rotates, it drives the base to move horizontally on its surface.

4. The clamping-type pipe heat treatment equipment according to claim 3, characterized in that: On the surface of the base, there is a column cylinder. Below the column cylinder, there is a second motor. The output end of the second motor has a second lead screw. A sliding column is arranged on the surface of the second lead screw. The sliding column moves inside the column cylinder. At the top of the sliding column, there is a grinding plate which grinds and removes impurities on the surface of the rotating pipe.

5. The clamping type pipe heat treatment equipment according to claim 4, wherein: On both sides of the grinding plate, there are support plates. On the surface of the support plates, there are collection boxes. When the grinding plate moves to grind the surface of the pipe body, the ground impurity particles fall into the collection boxes for automatic collection.

6. The clamping-type pipe heat treatment equipment according to claim 5, characterized in that: On both sides of the collection box, there are hollow columns. A limiting rod is slidably arranged on the inner wall of the hollow column. A compression spring is arranged between the hollow column and the limiting rod. The limiting rod squeezes and limits both sides of the collection box.

7. The clamping type pipe heat treatment equipment according to claim 1, characterized in that: Above the friction rollers, there is an electric top seat which is symmetrically arranged. The electric top seat is inserted into both sides of the pipe to automatically adjust its position.

8. The clamping-type pipe heat treatment equipment according to claim 4, characterized in that: On both sides of the bottom of the sliding column, there are first racks. On the side of each first rack, there is a reinforcement assembly which is used to reinforce the center of the pipe.

9. The clamping type pipe heat treatment equipment according to claim 8, characterized in that: The reinforcement assembly includes a rotating gear arranged on one side of the first rack. On one side of the rotating gear, there is a limiting column. A second rack is slidably arranged on the inner wall of the limiting column.

10. The clamping type pipe heat treatment equipment according to claim 9, characterized in that: On the top of the second rack, there is a support roller. A return spring is arranged between the second rack and the base.

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