A heat treatment device for seamless stainless steel pipe

Abstract

The utility model relates to stainless steel pipe processing technical field especially, and is a kind of seamless stainless steel pipe heat treatment device, including base, slide, mounting bracket, limiting component and drive component B, heating tank is set up on base, through-hole is set up on heating tank, and electric heating coil is set up in heating tank;Slide is slidably arranged on base, and drive component A that drives two slides to be synchronously close or away is set up on base, chuck is set up on slide;Mounting bracket is connected with clamping jaw, pivot is set up on mounting bracket, positioning wheel is set up on pivot, and the direction of rotation of positioning wheel on two chucks is same;Limiting component limits that positioning wheel can only rotate in one direction;Drive component B is set up on mounting bracket, and drive component B drives positioning wheel to rotate under working condition.The utility model has the function of active conveying stainless steel pipe, and the motor on two chucks does not need to adjust speed consistency or adjust its distribution start-stop time, and simultaneously, the device can also be applicable to different outer diameter stainless steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe processing technology, and in particular to a heat treatment device for seamless stainless steel pipes. Background Technology

[0002] After being formed, seamless stainless steel pipes need to undergo heat treatment, which mainly includes annealing, normalizing, quenching and tempering. By heating and then cooling the steel pipe, internal stress can be eliminated and the material properties of the stainless steel pipe can be optimized.

[0003] Chinese patent CN222613414U discloses a heat treatment device for seamless stainless steel pipes. The battery panel of this utility model powers the heating wire at the top, raising its temperature and heating the transported stainless steel pipe at high temperature. The heat can also be controlled by the battery panel, making the device more convenient to use. The second motor drives the second telescopic rod inside to push the cold treatment plate to one side. The cold treatment plate clamps the stainless steel pipe, enabling the device to remove wear at the joint of the stainless steel pipe, making the processing more precise, reducing manual operation, and making the processing more convenient.

[0004] However, the device still has shortcomings: it uses electric heating wires for indirect heating, which requires a long time to heat the stainless steel pipe to a high temperature, and it lacks a structure for actively traction and conveying the stainless steel pipe, making operation time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a heat treatment device for seamless stainless steel tubes.

[0006] The technical solution of this utility model is: a heat treatment device for seamless stainless steel pipe, including a base, a heating box set on the base, a through hole set on the heating box, an electric heating coil set inside the heating box, and the electric heating coil being coaxial with the through hole;

[0007] The slide includes two slides, both of which are slidably mounted on the base and located on opposite sides of the heating box. The base is provided with a drive assembly A that drives the two slides to move closer or further apart synchronously. The slides are provided with chucks having no less than three jaws.

[0008] Mounting brackets, including multiple mounting brackets, each mounting bracket is connected to the corresponding gripper on the side. The mounting bracket is provided with a rotating shaft that is rotatably connected to it. Positioning wheels are coaxially mounted on the rotating shaft, and the positioning wheels on the two chucks rotate in the same direction.

[0009] A limiting component is provided on the rotating shaft and acts on the positioning wheel to restrict the positioning wheel from rotating in only one direction.

[0010] And drive component B, which is mounted on one of the mounting brackets and drives the positioning wheel on the mounting bracket to rotate when in operation.

[0011] Preferably, the heating box includes a control box, a flip cover, and a latch. The bottom of the control box is connected to the base. A PLC controller is installed inside the control box and is electrically connected to the heating coil. An arc-shaped groove A communicating with its inner cavity is provided on the control box. A hinge is provided on the control box. The flip cover is rotatably connected to the control box via the hinge, and the flip cover and the control box are controlled to open and close via a latch. An arc-shaped groove B communicating with its inner cavity is provided on the flip cover, and a through hole is formed by the mating of the arc-shaped groove A and the arc-shaped groove B.

[0012] Preferably, the heating coil has a built-in high-precision temperature sensor, which includes, but is not limited to, a platinum resistance thermometer, and is electrically connected to the PLC controller.

[0013] Preferably, the drive component A includes a bidirectional module, a guide rail is provided on the base, two carriages are slidably connected to the guide rail, the body of the bidirectional module is connected to the base and parallel to the guide rail, and the two output slides of the bidirectional module are respectively connected to the carriages on the corresponding sides.

[0014] Preferably, the limiting component includes a ratchet and a ratchet tooth. A circular groove coaxial with the positioning wheel is provided on the positioning wheel, and a sliding groove communicating with the circular groove is provided on the positioning wheel. The ratchet is located in the circular groove and coaxially connected to the rotating shaft. A spring rod is provided in the sliding groove. The ratchet tooth is connected to the movable end of the spring rod, and the ratchet tooth is inserted into the circular groove and engages with the ratchet tooth in one direction.

[0015] Preferably, the drive assembly B includes a motor A and a coupling A. The body of the motor A is connected to the mounting bracket, and the output end of the motor A is connected to the rotating shaft through the coupling A.

[0016] Preferably, the chuck includes a chuck body and a drive assembly C. The drive assembly C includes a helical gear plate, a helical gear, a motor B, and a coupling B. The helical gear plate is disposed on the inner wall of the chuck body and is rotatably connected to it coaxially. A planar helical guide bar is disposed on the end of the helical gear plate opposite to the tooth pattern. The jaws are provided with tooth grooves that engage with the planar helical guide bar. A drive shaft is disposed on the chuck body. The helical gear is coaxially connected to the drive shaft and meshes with the helical gear plate. The body of the motor B is connected to the chuck body, and the output end of the motor B is connected to the drive shaft through the coupling B.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] By setting up a heating box consisting of a control box and a flip cover, the heating coil is installed on the flip cover, which facilitates the replacement of the heating coil and the cleaning of the internal space of the heating box. The combination structure of the chuck body, grippers, mounting bracket and positioning wheel facilitates the clamping and positioning of stainless steel tubes with different outer diameters. The ratchet and ratchet structure makes it easy to move the stainless steel tube according to the speed of the slower motor when two motors are working at the same time, without the need to adjust the speed of the two motors to be exactly the same, or to control the two motors separately, reducing the difficulty of equipment production and debugging. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the heating box.

[0021] Figure 3 This is a schematic diagram of the connection structure between the chuck and the carriage;

[0022] Figure 4 This is a schematic diagram of the connection structure between the gripper and motor B.

[0023] Figure 5 This is a schematic diagram of the connection structure between the positioning wheel and the rotating shaft.

[0024] Reference numerals: 1. Base; 2. Control box; 201. Arc groove A; 3. Flip cover; 301. Arc groove B; 4. Heating coil; 5. Hook and latch; 6. Guide rail; 7. Carriage; 8. Two-way module; 9. Chuck body; 10. Gripper; 11. Mounting bracket; 12. Shaft; 13. Positioning wheel; 131. Circular groove; 132. Slide groove; 14. Ratchet; 15. Spring rod; 16. Ratchet tooth; 17. Motor A; 18. Helical gear plate; 19. Flat spiral guide bar; 20. Helical gear; 21. Motor B; 22. Air guide shroud; 23. Turbine; 24. Intake pipe. Detailed Implementation

[0025] Example 1

[0026] like Figures 1-5As shown, the present invention proposes a heat treatment device for seamless stainless steel pipes, comprising a base 1, a slide 7, a mounting bracket 11, a limiting component, and a driving component B. A heating box is mounted on the base 1, with a through hole. An electric heating coil 4 is installed inside the heating box, coaxial with the through hole. The heating box includes a control box 2, a flip cover 3, and a latch 5. The bottom of the control box 2 is connected to the base 1. A PLC controller is installed inside the control box 2, electrically connected to the electric heating coil 4. An arc-shaped groove A201 communicating with its inner cavity is provided on the control box 2. A hinge is provided on the control box 2. The flip cover 3 is rotatably connected to the control box 2 via the hinge, and the flip cover 3 and the control box 2 are controlled to open and close via the latch 5. An arc-shaped groove B301 communicating with its inner cavity is provided on the flip cover 3, and the through hole is formed by the cooperation of the arc-shaped groove A201 and the arc-shaped groove B301. The latch 5 includes a female latch and a hook. The hook is connected to the flip cover 3, and the female latch is connected to the control box 2. The hook and the female latch are engaged. The heating coil 4 has a built-in high-precision temperature sensor, which includes, but is not limited to, a platinum resistance thermometer. The high-precision temperature sensor is electrically connected to the PLC controller. There are two carriages 7, which are slidably mounted on the base 1 and located on both sides of the heating box. The base 1 is equipped with a drive assembly A that drives the two carriages 7 to move closer or further away synchronously. The carriages 7 are equipped with a chuck with no less than three jaws 10. The chuck includes a chuck body 9 and a drive assembly C. The drive assembly C includes a helical gear 18, a helical gear 20, a motor B21, and a coupling B. The helical gear 18 is located on the inner wall of the chuck body 9 and is coaxially rotatably connected to it. The helical gear 18 is positioned away from the toothed edge of the toothed part of the chuck body 9. A planar helical guide bar 19 coaxial with the chuck body 9 is provided at the end. Each jaw 10 is arranged in a circular array around the axis of the chuck body 9 and is slidably connected to the chuck body 9. A tube passage coaxial with the chuck body 9 is provided. The jaws 10 are provided with toothed grooves that engage with the planar helical guide bar 19. A drive shaft is provided on the chuck body 9. A helical gear 20 is coaxially connected to the drive shaft and meshes with a helical gear plate 18. The body of motor B21 is connected to the chuck body 9. The output end of motor B21 is connected to the drive shaft through a coupling B. The drive assembly A includes a bidirectional module 8. A guide rail 6 is provided on the base 1. Two slides 7 are slidably connected to the guide rail 6. The body of the bidirectional module 8 is connected to the base 1 and parallel to the guide rail 6. The two output slides of the bidirectional module 8 are respectively connected to the slides 7 on the corresponding sides.Mounting brackets 11 include multiple brackets, each connected to a corresponding gripper 10. Each mounting bracket 11 has several rotating shafts 12 rotatably connected to it. Each rotating shaft 12 has a coaxially mounted positioning wheel 13, and the positioning wheels 13 on both chucks rotate in the same direction. A limiting component is mounted on one of the rotating shafts 12 and acts on the positioning wheel 13 on that shaft 12. The limiting component includes a ratchet 14 and ratchet teeth 16. The positioning wheel 13 has a coaxial circular groove 131 and a sliding groove 132 communicating with the circular groove 131. The ratchet 14 is located within the circular groove 131. It is coaxially connected to the rotating shaft 12. A spring rod 15 is provided in the slide groove 132. The ratchet 16 is connected to the movable end of the spring rod 15, and the ratchet 16 is inserted into the circular groove 131 and engages with the ratchet 14 in one direction, so as to limit the positioning wheel 13 to rotate in only one direction through the limiting component. The drive component B is provided on one of the mounting brackets 11. The drive component B includes a motor A17 and a coupling A. The body of the motor A17 is connected to the mounting bracket 11. The output end of the motor A17 is connected to the rotating shaft 12 through the coupling A. When the drive component B is in working state, it drives the positioning wheel 13 on the mounting bracket 11 to rotate.

[0027] In this embodiment, the stainless steel tube is inserted from the right side of the right-side chuck to the left. Motor B21 is started, driving the transmission shaft to rotate, which in turn rotates the helical gear 20, causing the helical gear disc 18 and the planar spiral guide bar 19 to rotate. This causes the grippers 10 to synchronously approach until all positioning wheels 13 are pressed against the outer wall of the stainless steel tube. Then, the heating coil 4 is started for preheating. The temperature of the heating coil 4 is controlled by a high-precision temperature sensor made of platinum resistance thermometer and a PLC controller. Next, motor A17 is started, driving the rotating shaft 12 to rotate, which in turn rotates the positioning wheel 13 through the engagement of the ratchet 14 and ratchet 16. The positioning wheel 13 rotates to actively transport the stainless steel pipe. The front end of the stainless steel pipe passes through the inside of the heating coil 4 and is heated. After being heated, the stainless steel pipe passes through the pipe passage of the left chuck body 9. Then, the left positioning wheel 13 clamps the pipe. The left and right motors A17 work together to pass the entire stainless steel pipe through the heating coil 4. It should be noted that, in order to facilitate the control of motors A17, the two motors A17 are controlled by a switch to start and stop. The speed difference of motors A17 will not interfere with the transport of the stainless steel pipe due to the presence of ratchet 14 and ratchet 16, and the positioning wheel 13 will not generate much friction with the stainless steel pipe.

[0028] Example 2

[0029] like Figure 1As shown, the heat treatment device for seamless stainless steel tubes proposed in this utility model, compared with Embodiment 1, has a guide shroud 22 coaxially mounted on the chuck body 9 on the discharge side. The guide shroud 22 has an annular structure, and the air outlet of the guide shroud 22 faces its axis. A worm gear 23 coaxially rotates inside the guide shroud 22, and an air inlet pipe 24 communicating with its inner cavity is mounted on the guide shroud 22 at a position offset from its axis. The air inlet pipe 24 is connected to an external blower, and the input end of the blower is connected to a cold air pipe.

[0030] In this embodiment, when it is necessary to accelerate the cooling of the high-temperature stainless steel pipe, the cold air in the cold air pipe is drawn by the blower and injected into the air inlet pipe 24. The low-temperature air in the air inlet pipe 24 enters the air guide hood 22 and drives the turbine 23 to rotate, so that the cold air is blown evenly onto the surface of the stainless steel pipe that passes through the inner channel of the annular air guide hood 22, so that it is cooled evenly and the cooling efficiency is high.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A heat treatment apparatus for seamless stainless steel tubes, characterized in that, include: A base (1) is provided on the base (1), a heating box is provided on the heating box, a through hole is provided on the heating box, and an electric heating coil (4) is provided inside the heating box. The electric heating coil (4) is coaxial with the through hole. The slide (7) includes two slides (7), both slides (7) are slidably mounted on the base (1) and located on both sides of the heating box respectively. The base (1) is provided with a drive assembly A that drives the two slides (7) to move closer or further away synchronously. The slides (7) are provided with a chuck with no less than three jaws (10). Mounting bracket (11), including multiple mounting brackets (11), each mounting bracket (11) is connected to the corresponding side gripper (10), a rotating shaft (12) is provided on the mounting bracket (11) and rotated thereon, a positioning wheel (13) is coaxially provided on the rotating shaft (12), and the positioning wheels (13) on the two chucks rotate in the same direction; A limiting component is provided on the rotating shaft (12) and acts on the positioning wheel (13) to restrict the positioning wheel (13) to rotate in only one direction. And drive component B, which is mounted on one of the mounting brackets (11) and drives the positioning wheel (13) on the mounting bracket (11) to rotate when in operation.

2. The heat treatment apparatus for seamless stainless steel tubes according to claim 1, characterized in that, The heating box includes a control box (2), a flip cover (3), and a latch (5). The bottom of the control box (2) is connected to the base (1). A PLC controller is installed inside the control box (2). The PLC controller is electrically connected to the heating coil (4). An arc groove A (201) communicating with its inner cavity is provided on the control box (2). A hinge is provided on the control box (2). The flip cover (3) is rotatably connected to the control box (2) through the hinge. The flip cover (3) and the control box (2) are controlled to open and close through the latch (5). An arc groove B (301) communicating with its inner cavity is provided on the flip cover (3). The through hole is formed by the cooperation of the arc groove A (201) and the arc groove B (301).

3. The heat treatment apparatus for seamless stainless steel tubes according to claim 2, characterized in that, The heating coil (4) has a built-in high-precision temperature sensor, which includes, but is not limited to, platinum resistance thermometers. The high-precision temperature sensor is electrically connected to the PLC controller.

4. The heat treatment apparatus for seamless stainless steel tubes according to claim 1, characterized in that, The drive assembly A includes a bidirectional module (8), a guide rail (6) is provided on the base (1), and two slides (7) are slidably connected to the guide rail (6). The body of the bidirectional module (8) is connected to the base (1) and parallel to the guide rail (6). The two output slides of the bidirectional module (8) are respectively connected to the slides (7) on the corresponding side.

5. The heat treatment apparatus for seamless stainless steel tubes according to claim 1, characterized in that, The limiting assembly includes a ratchet (14) and a ratchet tooth (16). A circular groove (131) is provided on the positioning wheel (13) and a sliding groove (132) is provided on the positioning wheel (13) that communicates with the circular groove (131). The ratchet (14) is located in the circular groove (131) and is coaxially connected to the rotating shaft (12). A spring rod (15) is provided in the sliding groove (132). The ratchet tooth (16) is connected to the movable end of the spring rod (15) and is inserted into the circular groove (131) and engages with the ratchet tooth (14) in one direction.

6. The heat treatment apparatus for seamless stainless steel tubes according to claim 1, characterized in that, The drive assembly B includes a motor A (17) and a coupling A. The body of the motor A (17) is connected to the mounting bracket (11), and the output end of the motor A (17) is connected to the rotating shaft (12) through the coupling A.

7. The heat treatment apparatus for seamless stainless steel tubes according to claim 1, characterized in that, The chuck includes a chuck body (9) and a drive assembly C. The drive assembly C includes a helical gear disc (18), a helical gear (20), a motor B (21), and a coupling B. The helical gear disc (18) is disposed on the inner wall of the chuck body (9) and is rotatably connected to it. A planar helical guide bar (19) is disposed on the end of the helical gear disc (18) away from the tooth pattern. The jaws (10) are provided with tooth grooves that engage with the planar helical guide bar (19). A drive shaft is disposed on the chuck body (9). The helical gear (20) is coaxially connected to the drive shaft and meshes with the helical gear disc (18). The body of the motor B (21) is connected to the chuck body (9). The output end of the motor B (21) is connected to the drive shaft through the coupling B.

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