One-time thermal forming device for multi-group barrel outer disc spiral pipe

Abstract

The utility model relates to a one-time thermal forming device for multi-group barrel outer coil spiral pipes, and belongs to the technical field of forming and processing of waste heat recovery heat exchanger outer coil spiral pipes. According to the technical scheme, a high-frequency heater (17) is used for heating and softening steel pipes (16), a clamping roller conveying mechanism is used for conveying the multiple sets of heated and softened steel pipes (16) to the position below a metal barrel (15), and a pressing roller mechanism is used for pressing the heated and softened steel pipes (16) on the surface of the metal barrel (15); the metal cylinder does linear motion and also does rotary motion in the axis direction of the metal cylinder, and the multiple sets of heated and softened steel pipes are spirally wound on the outer surface of the metal cylinder under the combined action of the linear motion and the rotary motion. The device has the advantages that multiple sets of steel pipes are rolled on the outer surface of the metal barrel at a time after being heated at high frequency, the machining efficiency is high, cold machining stress does not exist, the attaching degree between the spiral pipe and the metal barrel is good, and the heat conduction effect is good.

Description

Technical Field

[0001] The utility model relates to a one-time hot forming device for multiple groups of outer coil spiral tubes of cylinders, belonging to the technical field of forming and processing of outer coil spiral tubes of waste heat recovery heat exchangers. Background Art

[0002] During the manufacturing process of flue gas recovery devices such as the coke oven riser waste heat recovery heat exchanger, it is necessary to evenly and tightly arrange multiple sets of parallel spiral coils on the outside of the metal cylinder. The existing processing method mostly uses a spiral coil machine to cold process the steel pipe, and each straight steel pipe is rolled into a spiral tube, and then put on the outside of the metal cylinder. On the one hand, the processing efficiency of rolling each spiral tube separately is low, and it takes up a lot of manpower and mechanical equipment; on the other hand, the cold-processed spiral tube has processing stress and is difficult to process. In addition, after the processed spiral tube is put on the metal cylinder, there is a large gap between the spiral tube and the metal cylinder, which cannot fit tightly, affecting heat conduction. In order to make the spiral tube fit tightly with the metal cylinder, it is necessary to add a pressing process. Utility Model Content

[0003] The purpose of the utility model is to provide a one-time hot forming device for multiple groups of spiral tubes on the outer coil of a cylinder. Multiple groups of steel tubes are rolled and formed at one time through high-frequency heating. The processing efficiency is high, there is no cold processing stress, and the fit between the spiral tube and the metal cylinder is good, thereby solving the above-mentioned problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A one-time hot forming device for multiple groups of outer coil spiral tubes of cylinders, comprising a fixed bracket, a long slide rail, a sliding bracket, a walking power mechanism, a fixed end clamping and rotating mechanism, a mobile end clamping and rotating mechanism, a high-frequency heater, a clamping roller conveying mechanism and a pressing roller mechanism. The fixed bracket is provided with a long slide rail, the sliding bracket is slidably arranged on the long slide rail, the fixed end clamping and rotating mechanism is fixedly arranged at the front end of the sliding bracket, the mobile end clamping and rotating mechanism is slidably arranged at the rear end of the sliding bracket, the fixed end clamping and rotating mechanism and the mobile end clamping and rotating mechanism are used for clamping and rotating a metal cylinder, and the walking power mechanism installed on the fixed bracket is used to drive the sliding bracket on the long slide rail along the axis of the metal cylinder The sliding bracket drives the fixed end clamping rotating mechanism, the metal cylinder and the movable end clamping rotating mechanism to move together; a high-frequency heater and a conveying roller mechanism are arranged in sequence on the left side of the fixed bracket, and a pressing roller mechanism is arranged on the right side; the high-frequency heater is used to heat and soften the steel pipe, the clamping roller conveying mechanism is used to send multiple groups of heated and softened steel pipes to the bottom of the metal cylinder, and the pressing roller mechanism is used to press the heat-softened steel pipes against the surface of the metal cylinder; the metal cylinder makes a linear motion along its axial direction and also makes a rotational motion. Under the joint action of the linear motion and the rotational motion, the multiple groups of heated and softened steel pipes are heated in a spiral shape on the outer surface of the metal cylinder.

[0006] Furthermore, the walking power mechanism includes a servo reduction motor, a servo reduction fixed seat, a coupling, a fixed-end bearing seat, a screw, a movable-end bearing seat, a nut and a nut holder. The servo reduction motor is installed on the fixed bracket through the servo reduction fixed seat. The output shaft end of the servo reduction motor is connected to the front end of the screw through a coupling. The front and rear ends of the screw are respectively provided with a fixed-end bearing seat and a movable-end bearing seat. The fixed-end bearing seat and the movable-end bearing seat are both installed on the fixed bracket. The nut is engaged with the screw to form a spiral pair. The nut is placed inside the nut holder, and the nut holder is fixed on the sliding bracket. The servo reduction motor drives the screw to rotate, so that the nut on the spiral pair moves in a straight line, thereby driving the sliding bracket to walk.

[0007] Furthermore, the fixed end clamping rotating mechanism comprises a driving reduction motor, a motor mounting base, a driving disk and a mounting disk 1, wherein the driving reduction motor is mounted on the front end of the sliding bracket through the motor mounting base, and the driving disk is mounted on the output shaft end of the driving reduction motor, and the driving disk is connected to the mounting disk 1, and the mounting disk 1 is used to clamp the front end of the metal cylinder;

[0008] The mobile end clamping and rotating mechanism comprises a tail base, a slider 2, a tail base slide rail, a bearing seat 1, a driven shaft, a driven disk and a mounting plate 2. Two tail base slide rails are installed in parallel at the rear end of the sliding bracket. Two sliders 2 are installed at the bottom of the tail base. The tail base performs linear motion on the two tail base slide rails through the two sliders 2. Two coaxially arranged bearing seats 1 are respectively installed at the front and rear ends of the tail base. Driven shafts are installed on the two bearing seats 1. A driven disk is installed at the front end of the driven shaft. The driven disk is connected to the mounting plate 2. The mounting plate 2 is used to clamp the rear end of the metal cylinder.

[0009] Furthermore, the mounting plate 1 and the mounting plate 2 have the same structure, and a plurality of steel plate claws are welded inside the mounting plate 1 and the mounting plate 2 along the circumferential direction. The diameter of the circle where the outer surfaces of the plurality of steel plate claws are located matches the inner diameter of the metal cylinder. The metal cylinder is fixed by the mounting plate 1 and the mounting plate 2 and is driven to rotate.

[0010] Furthermore, the clamping roller mechanism includes a clamping roller, a second bearing seat, a supporting roller, a third bearing seat and a roller bracket. The roller bracket is arranged on the left side of the fixed bracket. Two sets of bearing seats and clamping rollers are arranged in parallel up and down on the left side of the roller bracket. The outer surfaces of the two clamping rollers are respectively provided with a plurality of semicircular grooves one matching the multiple groups of steel pipes. The two semicircular grooves one arranged opposite to each other up and down form a circular conveying channel. The diameter of the circular conveying channel is slightly larger than the outer diameter of the steel pipe, which plays a role in positioning the steel pipe. The right side of the roller bracket is provided with a third bearing seat and a supporting roller. The outer surface of the supporting roller is provided with a plurality of semicircular grooves two matching the multiple groups of steel pipes. The multiple groups of steel pipes after heating and softening enter the corresponding semicircular grooves two on the supporting rollers through the corresponding circular conveying channels respectively, and the supporting rollers play a role in assisting forming.

[0011] Furthermore, the pressure roller mechanism includes a pressure roller, a bearing seat four, a pressure roller sliding support, a worm gear lift, an elevator fixed seat, a pressure roller slide rail and a slider three, the elevator fixed seat is arranged on the right side of the fixed bracket, the elevator fixed seat is provided with a pressure roller slide rail, the pressure roller sliding support is slidably arranged on the pressure roller slide rail through the slider three, the pressure roller sliding support is connected to the worm gear lift arranged on the elevator fixed seat, the worm gear lift pushes the pressure roller sliding support to make a linear motion along the pressure roller slide rail, two bearing seats four are provided on the side of the pressure roller sliding support adjacent to the fixed bracket, the pressure roller is tilted between the two bearing seats four, the outer surface of the pressure roller is provided with a plurality of semicircular grooves three matching with a plurality of groups of steel pipes, the ends of the plurality of groups of steel pipes are fixed to the metal cylinder by welding or arc clips, the worm gear lift pushes the pressure roller sliding support and the pressure roller to move forward in the direction of the metal cylinder, and the plurality of semicircular grooves three on the pressure roller are respectively pressed on the corresponding steel pipes, pressing the steel pipe tightly against the outer surface of the metal cylinder.

[0012] Furthermore, two sliders three are welded to the bottom of the pressure roller sliding support, and the two sliders three are respectively slidably set on the two pressure roller slide rails, and the worm gear elevator, the slider three and the pressure roller slide rail are arranged in parallel from top to bottom.

[0013] Furthermore, the fixed bracket is provided with two long slide rails arranged in parallel, and four sliding blocks 1 arranged in parallel are welded to the bottom of the sliding bracket, and every two sliding blocks 1 are matched and installed on one long slide rail.

[0014] Furthermore, annular reinforcing ribs are welded to the ends of a plurality of steel plate claws inside the first and second mounting plates.

[0015] Furthermore, the output end of the servo reduction motor and the center line of the lead screw are located on the same straight line as the center line of the sliding bracket.

[0016] The utility model places 2-6 steel pipes that need to be rolled on the cylinder in parallel and sets a high-frequency heater at the entrance. After being softened by high-frequency heating, multiple groups of steel pipes enter the gap between the pressure roller and the metal cylinder from the upper part of the roller through the clamping action of the clamping roller, and the ends of the multiple groups of steel pipes are fixed on the metal cylinder by welding or arc clips. The worm gear lift applies pressure to the pressure roller, and the inclined pressure roller makes the multiple groups of steel pipes close to the outer surface of the metal cylinder and deforms it in the circumferential direction. The deformation is spiral, and the pitch between adjacent steel pipes is adjusted by adjusting the inclination angle of the pressure roller. The metal cylinder rotates under the drive of the reduction motor. At the same time, the sliding bracket moves along the axis of the metal cylinder under the drive of the lead screw. Under the action of two movements, the multiple groups of steel pipes complete the work of the spiral tube hot plate.

[0017] The positive effects of the utility model are as follows: after high-frequency heating, multiple groups of steel pipes are rolled and formed at one time through the device, with high processing efficiency, no cold processing stress, good fit between the spiral pipe and the metal cylinder, and good heat conduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric drawing of the utility model;

[0019] Figure 2 This is an axonometric diagram of the fixed end clamping rotating mechanism of the utility model;

[0020] Figure 3 This is an axonometric diagram of the clamping roller conveying mechanism of the utility model;

[0021] Figure 4 It is an axonometric diagram of the travel power mechanism of the utility model;

[0022] In the figure: fixed bracket 1, long slide rail 2, slider 1 3, sliding bracket 4, driving reduction motor 5, motor mounting base 6, driving disk 7, tail base 8, slider 2 9, tail base slide rail 10, bearing seat 1 11, driven shaft 12, driven disk 13, mounting plate 1 14A, mounting plate 2 14B, steel plate claw 141, annular reinforcement rib 142, metal cylinder 15, steel pipe 16, high frequency heater 17, clamping roller 18, bearing seat 2 19, roller 20, bearing seat 3 21, roller bracket 22, pressure roller 23, bearing seat 4 24, pressure roller sliding support 25, worm gear elevator 26, elevator fixed seat 27, pressure roller slide rail 28, slider 3 29, servo reduction motor 30, servo reduction fixed seat 31, coupling 32, fixed end bearing seat 33, screw 34, movable end bearing seat 35, nut 36, nut holder 37. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] A one-time hot forming device for a plurality of groups of outer coil spiral tubes of a cylinder, comprising a fixed bracket 1, a long slide rail 2, a sliding bracket 4, a walking power mechanism, a fixed end clamping and rotating mechanism, a mobile end clamping and rotating mechanism, a high-frequency heater 17, a clamping roller conveying mechanism and a pressing roller mechanism, wherein the fixed bracket 1 is provided with a long slide rail 2, the sliding bracket 4 is slidably arranged on the long slide rail 2, the fixed end clamping and rotating mechanism is fixedly arranged at the front end of the sliding bracket 4, the mobile end clamping and rotating mechanism is slidably arranged at the rear end of the sliding bracket 4, the fixed end clamping and rotating mechanism and the mobile end clamping and rotating mechanism are used for clamping and rotating a metal cylinder 15, and the walking power mechanism installed on the fixed bracket 1 is used for driving the sliding bracket 4 to make a straight line along the axis direction of the metal cylinder 15 on the long slide rail 2 The sliding bracket 4 drives the fixed end clamping rotating mechanism, the metal cylinder 15 and the movable end clamping rotating mechanism to move together; the left side of the fixed bracket 1 is provided with a high-frequency heater 17 and a conveying roller mechanism in sequence, and the right side is provided with a pressing roller mechanism; the high-frequency heater 17 is used to heat and soften the steel pipe 16, the clamping roller conveying mechanism is used to send the multiple groups of steel pipes 16 after heating and softening to the bottom of the metal cylinder 15, and the pressing roller mechanism is used to press the heat-softened steel pipe 16 on the surface of the metal cylinder 15; the metal cylinder 15 makes a linear motion along its axial direction and also makes a rotational motion. Under the joint action of the linear motion and the rotational motion, the multiple groups of steel pipes 16 after heating and softening are spirally heated on the outer surface of the metal cylinder 15.

[0025] See attached Figure 1 The walking power mechanism includes a servo reduction motor 30, a servo reduction fixed seat 31, a coupling 32, a fixed end bearing seat 33, a screw 34, a movable end bearing seat 35, a nut 36 and a nut holder 37. The servo reduction motor 30 is installed on the fixed bracket 1 through the servo reduction fixed seat 31. The output shaft end of the servo reduction motor 30 is connected to the front end of the screw 34 through the coupling 32. The fixed end bearing seat 33 and the movable end bearing seat 35 are respectively installed at the front and rear ends of the screw 34. The fixed end bearing seat 33 and the movable end bearing seat 35 are both installed on the fixed bracket 1. The nut 36 is engaged with the screw 34 to form a spiral pair. The nut 36 is placed inside the nut holder 37, and the nut holder 37 is fixed on the sliding bracket 4. The servo reduction motor 30 drives the screw 34 to rotate, so that the nut 36 on the spiral pair moves linearly, thereby driving the sliding bracket 4 to walk.

[0026] See attached Figure 1 and 2 The fixed end clamping rotating mechanism includes a driving reduction motor 5, a motor mounting base 6, a driving disk 7 and a mounting disk 14A. The driving reduction motor 5 is installed at the front end of the sliding bracket 4 through the motor mounting base 6. The driving disk 7 is installed at the output shaft end of the driving reduction motor 5. The driving disk 7 is connected to the mounting disk 14A. The mounting disk 14A is used to clamp the front end of the metal cylinder 15.

[0027] The mobile end clamping and rotating mechanism includes a tail base 8, a slider 29, a tail base slide rail 10, a bearing seat 11, a driven shaft 12, a driven disk 13 and a mounting disk 2 14B. Two tail base slide rails 10 are installed in parallel at the rear end of the sliding bracket 4. Two sliders 29 are installed at the bottom of the tail base 8. The tail base 8 performs linear motion on the two tail base slide rails 10 through the two sliders 29. Two coaxially arranged bearing seats 11 are respectively installed at the front and rear ends of the tail base 8. The two bearing seats 11 are equipped with driven shafts 12. The driven disk 13 is installed at the front end of the driven shaft 12. The driven disk 13 is connected to the mounting disk 2 14B. The mounting disk 2 14B is used to clamp the rear end of the metal cylinder 15.

[0028] See attached Figure 2 The mounting plate 1 14A and the mounting plate 2 14B have the same structure. A plurality of steel plate claws 141 are welded inside the mounting plate 14A and the mounting plate 2 14B along the circumferential direction. The diameter of the circle where the outer surface of the plurality of steel plate claws 141 is located matches the inner diameter of the metal cylinder 15. The metal cylinder 15 is fixed by the mounting plate 14A and the mounting plate 2 14B and driven to rotate.

[0029] See attached Figure 2 and 3 The clamping roller mechanism comprises a clamping roller 18, a bearing seat 19, a roller 20 and a roller bracket 22. The roller bracket 22 is arranged on the left side of the fixed bracket 1. Two sets of bearing seats 19 and clamping rollers 18 are arranged in parallel on the left side of the roller bracket 22. The outer surfaces of the two clamping rollers 18 are respectively provided with a plurality of semicircular grooves 1 that match the multiple groups of steel pipes 16. The two semicircular grooves 1 that are arranged opposite to each other form a circular conveying channel. The diameter of the circular conveying channel is slightly larger than the outer diameter of the steel pipe 16, which plays a role in positioning the steel pipe 16. The roller 20 is arranged on the right side of the roller bracket 22. The outer surface of the roller 20 is provided with a plurality of semicircular grooves 2 that match the multiple groups of steel pipes 16. The multiple groups of steel pipes 16 that have been heated and softened enter the corresponding semicircular grooves 2 on the roller 20 through the corresponding circular conveying channels, and the roller 20 plays a role in assisting the forming.

[0030] See attached Figure 2 and 3The pressure roller mechanism includes a pressure roller 23, a bearing seat 24, a pressure roller sliding support 25, a worm gear elevator 26, an elevator fixed seat 27, a pressure roller slide rail 28 and a slider 29. The elevator fixed seat 27 is arranged on the right side of the fixed bracket 1. The elevator fixed seat 27 is provided with a pressure roller slide rail 28. The pressure roller sliding support 25 is slidably arranged on the pressure roller slide rail 28 through the slider 29. The pressure roller sliding support 25 is connected to the worm gear elevator 26 arranged on the elevator fixed seat 27. The worm gear elevator 26 pushes the pressure roller sliding support 25 to make a straight line along the pressure roller slide rail 28 Movement, two bearing seats four 24 are provided on one side of the pressure roller sliding support 25 adjacent to the fixed bracket 1, the pressure roller 23 is tiltedly arranged between the two bearing seats four 24, the outer surface of the pressure roller 23 is provided with a plurality of semicircular grooves three matching the plurality of steel pipes 16, the ends of the plurality of steel pipes 16 are fixed to the metal cylinder 15 by welding or arc clips, the worm gear elevator 26 pushes the pressure roller sliding support 25 and the pressure roller 23 toward the metal cylinder 15, the plurality of semicircular grooves three on the pressure roller 23 are respectively pressed on the corresponding steel pipes 16, and the steel pipes 16 are pressed tightly against the outer surface of the metal cylinder 15.

[0031] See attached Figure 2 and 3 Two sliders 3 29 are welded at the bottom of the roller sliding support 25. The two sliders 3 29 are respectively slidably arranged on the two roller slide rails 28. The worm gear elevator 26, the sliders 3 29 and the roller slide rails 28 are arranged in parallel from top to bottom.

[0032] See attached Figure 1 The fixed bracket 1 is provided with two parallel long slide rails 2, and four parallel sliders 3 are welded to the bottom of the sliding bracket 4, and every two sliders 3 are matched and installed on one long slide rail 2.

[0033] See attached Figure 2 Annular reinforcing ribs 142 are welded to the ends of several steel plate claws 141 inside the mounting plate 1 14A and the mounting plate 2 14B.

[0034] See attached Figure 1 The output end of the servo reduction motor 30 and the center line of the lead screw 34 are located on the same straight line as the center line of the sliding bracket 4.

[0035] When the steel pipe 16 starts to heat the coil, multiple groups of straight steel pipes are placed in parallel at the inlet of the device. After the steel pipe 16 passes through the high-frequency heater 17 and is heated to an appropriate temperature, it enters the circular conveying channel formed by two parallel clamping rollers 18 that play a positioning role. Then the ends of the multiple groups of steel pipes 16 enter the semicircular groove 2 of the roller 20 that plays an auxiliary forming role, and are fixed to the metal cylinder 15 by means of clips or welding. The metal cylinder 15 clamped on the mounting plate 1 14A and the mounting plate 2 14B rotates under the drive of the driving reduction motor 5, and the worm gear elevator 26 applies pressure to the pressure roller 23, and the steel pipe 16 is tightly attached to the metal cylinder 15 under the action of the pressure roller 23. At the same time, the sliding bracket 4 drives the metal cylinder 15 to move along its axial direction under the drive of the ball screw. Under the action of two linear motions and rotational motions, multiple groups of steel pipes 16 complete the spiral tube heating coil work. When the spiral tube completes the heating work, move the mounting plate 2 14B backward, separate the metal cylinder 15 from the mounting plate 1 14A, cut the part of the steel pipe 16 extending from the front end of the metal cylinder 15, make the front end of the steel pipe 16 flush with the front end of the metal cylinder 15, and remove the metal cylinder 15 of the spiral steel tube after heating.

[0036] In this embodiment, the fixed bracket 1 is made of steel and steel plate to support and install the equipment. Two long slide rails 2 are installed in parallel on the two cross beams of the fixed bracket 1, and two sliders 3 are set on each long slide rail.

[0037] In this embodiment, the sliding bracket 4 is installed on the upper part of the four sliding blocks 1 3, and can slide linearly on the fixed bracket 1 through the long slide rail 2. The driving reduction motor 5 is fixedly installed at the front end of the sliding bracket 4 through the motor mounting base 6 to provide driving force for the rotation of the metal cylinder 15; the rear end of the sliding bracket 4 is installed with a tail base 8 that can move forward and backward, and the tail base 8 and the driving reduction motor 5 are coaxially arranged with the mounting plate 1 14A and the mounting plate 2 14B, and the metal cylinder 15 can be clamped by moving the tail base 8 forward and backward.

[0038] In this embodiment, two tail base rails 10 are installed in parallel at the rear end of the sliding bracket 4, and two sliders 2 9 are installed on the upper part of each tail base 8. The tail base 8 is installed on the upper part of the slider 2 9, and can perform linear motion on the sliding bracket 4. Two coaxially arranged bearing seats 1 11 are installed at the front and rear of the tail base 8, and a driven shaft 12 is installed on the bearing seat 1 11. A driven disk 13 and a mounting disk 2 14B are installed in sequence at the front end of the driven shaft 12.

[0039] In this embodiment, the travel power mechanism of the sliding bracket 4 is composed of: a servo reduction motor 30, a servo reduction fixing seat 31, a coupling 32, a fixed end bearing seat 33, a lead screw 34, a movable end bearing seat 35 and a nut 36. The servo reduction motor 30 is installed on the fixed bracket through the servo reduction fixing seat 31, and the output shaft cooperates with the coupling 32. The front and rear ends of the lead screw 34 are respectively installed with a fixed end bearing seat 33 and a movable end bearing seat 35, and the front end of the lead screw 34 cooperates with the coupling 32. The nut 36 is meshed on the lead screw 34 and placed inside the nut holder 37. The servo reduction motor 30 drives the lead screw 34 to rotate, so that the nut 36 on the spiral pair produces a linear motion forward and backward, thereby driving the sliding bracket 4 to travel.

[0040] In this embodiment, the roller bracket 22 is installed on the left side of the fixed bracket 1, and two sets of bearing seats 2 19 and clamping rollers 18 are installed in parallel. Multiple semicircular grooves 1 are arranged on the two clamping rollers 18 to form a circular conveying channel, which just accommodates the steel pipe 16 and plays a role in positioning the steel pipe 16. The roller 20 and the matching bearing seat 3 21 are installed at the position of the roller bracket 22 at the lower part of the metal cylinder 15. The outer surface of the roller 20 is provided with multiple semicircular grooves 2 matching the multiple groups of steel pipes 16, and the roller 20 plays a role in assisting the forming.

[0041] In this embodiment, the elevator fixed seat 27 is fixed on the right side of the roller bracket 22 and arranged opposite to the roller bracket 22. The upper part of the elevator fixed seat 27 is parallelly installed with a roller slide rail 28, a slider three 29 and a worm gear elevator 26. The roller sliding support 25 is installed on the slider three 29, and the front part is equipped with an inclined roller 23 and a matching bearing seat four 24. The roller sliding support 25 moves forward and backward along the roller slide rail 28 under the push of the worm gear elevator 26. During the forming process of the steel pipe 16, the roller 23 squeezes the steel pipe 16 to cause it to deform in the circumferential direction, and the deformation is spiral. By adjusting the inclination angle of the roller 23, the pitch between adjacent steel pipes can be adjusted.

[0042] In this embodiment, the driving reduction motor 5 is a variable frequency motor, and the speed can be adjusted according to the production needs. The drive disc 7 and the mounting disc 14A are sequentially installed at the output shaft end of the driving reduction motor 5 to clamp the metal cylinder 15 and provide a circumferential driving force therefor.

[0043] In this embodiment, the mounting plate 14A and the mounting plate 2 14B have the same structure, and are both composed of a connecting plate, a cylinder, a steel plate clamping claw 141 and an annular reinforcing rib 142. A cylinder is welded on one side of the connecting plate, and the outer diameter of the cylinder is the same as the outer diameter of the metal cylinder 15. A plurality of steel plate clamping claws 141 are conveniently arranged along the circumference of the inner wall of the cylinder. An annular reinforcing rib 142 is welded at the end of the steel plate clamping claw 141 to increase the strength of the steel plate clamping claw 141. The connecting plate of the mounting plate 14A is connected to the driving plate 7 by bolts, and the connecting plate of the mounting plate 2 14B is connected to the driven plate 13 by bolts. The diameter of the circle where the outer surface of the plurality of steel plate clamping claws 141 is located matches the inner diameter of the metal cylinder 15. The metal cylinder 15 is fixed and driven to rotate by the mounting plate 14A and the mounting plate 2 14B.

Claims

1. A one-step hot forming device for multiple groups of outer coil spiral tubes, characterized in that: The invention comprises a fixed bracket (1), a long slide rail (2), a sliding bracket (4), a travel power mechanism, a fixed end clamping and rotating mechanism, a mobile end clamping and rotating mechanism, a high frequency heater (17), a clamping roller conveying mechanism and a pressure roller mechanism. The fixed bracket (1) is provided with a long slide rail (2). The sliding bracket (4) is slidably arranged on the long slide rail (2). The fixed end clamping and rotating mechanism is fixedly arranged at the front end of the sliding bracket (4). The mobile end clamping and rotating mechanism is slidably arranged at the rear end of the sliding bracket (4). The fixed end clamping and rotating mechanism and the mobile end clamping and rotating mechanism are used to clamp and rotate a metal cylinder (15). The travel power mechanism installed on the fixed bracket (1) is used to drive the sliding bracket (4) to perform linear motion on the long slide rail (2) along the axial direction of the metal cylinder (15). The sliding bracket (4) driving the fixed end clamping rotating mechanism, the metal cylinder (15) and the movable end clamping rotating mechanism to move together; the fixed bracket (1) is provided with a high-frequency heater (17) and a conveying roller mechanism in sequence on the left side, and a pressing roller mechanism on the right side; the high-frequency heater (17) is used to heat and soften the steel pipe (16), the clamping roller conveying mechanism is used to feed the multiple groups of steel pipes (16) after heating and softening to the bottom of the metal cylinder (15), and the pressing roller mechanism is used to press the steel pipes (16) after heat softening against the surface of the metal cylinder (15); the metal cylinder (15) performs linear motion along its axial direction and also performs rotational motion, and the multiple groups of steel pipes (16) after heating and softening are heated and plated on the outer surface of the metal cylinder (15) in a spiral shape under the combined action of linear motion and rotational motion.

2. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 1, characterized in that: The walking power mechanism comprises a servo reduction motor (30), a servo reduction fixing seat (31), a coupling (32), a fixed end bearing seat (33), a lead screw (34), a movable end bearing seat (35), a nut (36) and a nut holder (37). The servo reduction motor (30) is mounted on the fixed bracket (1) via the servo reduction fixing seat (31). The shaft end of the servo reduction motor (30) is connected to the front end of the lead screw (34) via the coupling (32). The lead screw (34) is respectively mounted at the front and rear ends. There are a fixed end bearing seat (33) and a movable end bearing seat (35), both of which are mounted on a fixed bracket (1), a nut (36) is meshed with a lead screw (34) to form a spiral pair, the nut (36) is placed inside a nut holder (37), and the nut holder (37) is fixed on a sliding bracket (4); a servo reduction motor (30) drives the lead screw (34) to rotate, so that the nut (36) on the spiral pair moves linearly, thereby driving the sliding bracket (4) to move.

3. A one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 1 or 2, characterized in that: The fixed end clamping rotating mechanism comprises a driving reduction motor (5), a motor mounting base (6), a driving disk (7) and a mounting disk 1 (14A); the driving reduction motor (5) is mounted on the front end of the sliding bracket (4) through the motor mounting base (6); the driving disk (7) is mounted on the shaft end of the driving reduction motor (5); the driving disk (7) is connected to the mounting disk 1 (14A); and the mounting disk 1 (14A) is used to clamp the front end of the metal cylinder (15); The mobile end clamping and rotating mechanism comprises a tail base (8), a second slider (9), a tail base slide rail (10), a bearing seat (11), a driven shaft (12), a driven disk (13) and a second mounting disk (14B). Two tail base slide rails (10) are installed in parallel at the rear end of the sliding bracket (4). Two second sliders (9) are installed at the bottom of the tail base (8). The tail base (8) performs linear motion on the two tail base slide rails (10) through the two second sliders (9). Two coaxially arranged bearing seats (11) are installed at the front and rear ends of the tail base (8). The two bearing seats (11) are installed with driven shafts (12). The driven disk (13) is installed at the front end of the driven shaft (12). The driven disk (13) is connected to the second mounting disk (14B). The second mounting disk (14B) is used to clamp the rear end of the metal cylinder (15).

4. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 3, characterized in that: The mounting plate 1 (14A) and the mounting plate 2 (14B) have the same structure. A plurality of steel plate claws (141) are welded to the inside of the mounting plate 1 (14A) and the mounting plate 2 (14B) along the circumferential direction. The diameter of the circle where the outer surface of the plurality of steel plate claws (141) is located matches the inner diameter of the metal cylinder (15). The metal cylinder (15) is fixed by the mounting plate 1 (14A) and the mounting plate 2 (14B) and driven to rotate.

5. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 3, characterized in that: The clamping roller mechanism comprises a clamping roller (18), a second bearing seat (19), a support roller (20), a third bearing seat (21) and a roller bracket (22). The roller bracket (22) is arranged on the left side of the fixed bracket (1). Two sets of second bearing seats (19) and clamping rollers (18) arranged in parallel vertically are arranged on the left side of the roller bracket (22). The outer surfaces of the two clamping rollers (18) are respectively provided with a plurality of semicircular grooves one matching the plurality of groups of steel pipes (16). The two semicircular grooves one arranged in opposite directions vertically form a circular transmission The circular conveying channel has a diameter slightly larger than the outer diameter of the steel pipe (16) and plays a role in positioning the steel pipe (16). A bearing seat (21) and a roller (20) are provided on the right side of the roller bracket (22). The outer surface of the roller (20) is provided with a plurality of semicircular grooves (2) matching the plurality of groups of steel pipes (16). After being heated and softened, the plurality of groups of steel pipes (16) respectively pass through the corresponding circular conveying channels and enter the corresponding semicircular grooves (2) on the roller (20). The roller (20) plays a role in assisting the forming process.

6. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 5, characterized in that: The pressure roller mechanism comprises a pressure roller (23), a bearing seat four (24), a pressure roller sliding support (25), a worm gear lift (26), a lift fixed seat (27), a pressure roller slide rail (28) and a slider three (29), wherein the lift fixed seat (27) is arranged on the right side of the fixed bracket (1), the lift fixed seat (27) is provided with a pressure roller slide rail (28), the pressure roller sliding support (25) is slidably arranged on the pressure roller slide rail (28) via the slider three (29), the pressure roller sliding support (25) is connected to the worm gear lift (26) arranged on the lift fixed seat (27), and the worm gear lift (26) pushes the pressure roller sliding support (25) along the pressure roller slide rail (28) The roller (23) is provided with two bearing seats (24) on one side adjacent to the fixed bracket (1) for linear motion. The roller (23) is tiltedly arranged between the two bearing seats (24). The outer surface of the roller (23) is provided with a plurality of semicircular grooves (3) matching the plurality of steel pipes (16). The ends of the plurality of steel pipes (16) are fixed to the metal cylinder (15) by welding or arc-shaped clips. The worm gear elevator (26) pushes the roller sliding support (25) and the roller (23) forward in the direction of the metal cylinder (15). The plurality of semicircular grooves (3) on the roller (23) are respectively pressed on the corresponding steel pipes (16), so that the steel pipes (16) are pressed tightly against the outer surface of the metal cylinder (15).

7. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 6, characterized in that: Two sliders three (29) are welded to the bottom of the pressure roller sliding support (25), and the two sliders three (29) are respectively slidably arranged on the two pressure roller slide rails (28), and the worm gear elevator (26), the slider three (29) and the pressure roller slide rails (28) are arranged in parallel from top to bottom.

8. A one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 1 or 2, characterized in that: The fixed bracket (1) is provided with two parallel long slide rails (2), and the bottom of the sliding bracket (4) is welded with four parallel sliding blocks (3), and every two sliding blocks (3) are matched and mounted on one long slide rail (2).

9. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 3, characterized in that: Annular reinforcing ribs (142) are welded to the ends of a plurality of steel plate clamping claws (141) inside the first mounting plate (14A) and the second mounting plate (14B).

10. The one-step hot forming device for multiple groups of outer coil spiral tubes according to claim 2, characterized in that: The output end of the servo reduction motor (30) and the center line of the lead screw (34) are located on the same straight line as the center line of the sliding bracket (4).

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