Active pay-off stand for hoop bending machine

Abstract

The present invention discloses an active pay-off stand for a hoop bending machine, which belongs to the technical field of steel bar hoop bending, and is designed to solve the defects of existing devices that cannot actively rotate to pay out wires. The active pay-off stand for the hoop bending machine of the present invention comprises: a support unit, including a base and a pay-off drum for placing wire rod steel bars, and the wire rod steel bars can rotate synchronously with the pay-off drum; a pay-off unit, including a motor, the output end of the motor is connected to the pay-off drum through a driving transition component and can drive the pay-off drum to rotate; and a speed adjustment unit, including a speed adjustment swing arm, a start-stop part and a speed adjustment line buckle for passing the end of the wire rod steel bars, and the speed adjustment swing arm has a pay-off state position and a stop state position and can swing between the two state positions. The active pay-off stand for the hoop bending machine of the present invention realizes active pay-off, and the speed adjustment unit can adjust the rotation speed of the wire rod steel bars to avoid the surface of the wire rod steel bars being worn due to the pulling of the hoop bending machine, and the pay-off efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar bending hoops, and in particular to an active pay-off frame for a hoop bending machine. Background Art

[0002] The hoop bending machine is a device used to automatically bend steel bars, and the wire pay-off stand is a matching mechanism for placing wire rod steel bars.

[0003] The existing pay-off frame has a simple structure and a single function, and is only used to place the wire rod steel bar. When the wire rod steel bar is bent, a hoop bending machine is required to pull the wire rod steel bar, and the pay-off frame rotates under the friction force of the wire rod steel bar to realize the pay-off.

[0004] The defects of the pay-off stand include: it cannot actively rotate to pay out the wire, resulting in low pay-off efficiency; the surface of the wire rod is easily worn under the mutual force between the hoop bending machine, the wire rod and the pay-off stand; the pay-off stand has a large inertia whether it is from stationary to rotation or from rotation to stationary, and the pay-off stand cannot be started or stopped in time when the hoop bending machine starts or stops working, resulting in the wire rod being pulled violently or too much wire being paid out, resulting in the wire rod piling up at the entrance end of the hoop bending machine. Summary of the invention

[0005] The purpose of the present invention is to provide an active wire-paying frame for a hoop bending machine, which has high wire-paying efficiency and avoids wearing the surface of the wire rod steel bar.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An active pay-off stand for a hoop bending machine comprises: a supporting unit comprising a base and a pay-off drum for placing wire rod steel bars, the wire rod steel bars can rotate synchronously with the pay-off drum, and the pay-off drum is arranged on the base; a pay-off unit comprises a motor, the output end of the motor is connected to the pay-off drum through a driving transition component and can drive the pay-off drum to rotate; and a speed adjustment unit comprises a speed adjustment swing arm, a start-stop member and a speed adjustment line-passing buckle for passing the end of the wire rod steel bars, the speed adjustment line-passing buckle is installed on the speed adjustment swing arm, and the speed adjustment swing arm is arranged on the base through a swing arm bracket assembly; the speed adjustment swing arm has a pay-off state position and a line-stop state position and can swing between the two state positions, when the speed adjustment swing arm is in the pay-off state position, the start-stop member starts the motor, and when the speed adjustment swing arm is in the line-stop state position, the start-stop member stops the motor.

[0008] In particular, the swing arm bracket assembly includes a rotating support, a rotating frame and a speed regulating swing arm bracket, the speed regulating swing arm is installed on the speed regulating swing arm bracket, the speed regulating swing arm bracket is installed on the rotating frame, the rotating frame is pivotally connected to the rotating support through a rotating shaft, and a lever serving as the start and stop member is provided on the end of the rotating shaft.

[0009] In particular, a lifting ring is installed on the rotating frame, an adjusting block is arranged on the base, and a spring in a tension state is connected between the lifting ring and the adjusting block.

[0010] In particular, an upper limit rod and a lower limit rod for limiting the swing angle of the rotating frame are provided on the rotating support. When the rotating frame abuts against the upper limit rod, the speed adjustment swing arm is in a line-stopping state position, and when the rotating frame abuts against the lower limit rod, the speed adjustment swing arm is in a line-releasing state position.

[0011] In particular, the rotating support includes a rotating support upper plate and a rotating support lower plate arranged in parallel, the rotating support upper plate and the rotating support lower plate are respectively coaxially provided with through holes, the rotating frame is arranged between the rotating support upper plate and the rotating support lower plate, and the rotating shaft passes through the through holes on the rotating support upper plate, the rotating frame and the rotating support lower plate in sequence; the upper limit rod and the lower limit rod are both arranged between the rotating support upper plate and the rotating support lower plate and are respectively located on both sides of the rotating frame.

[0012] In particular, the drive transition assembly includes a driving sprocket arranged on the output end of the motor, a driven sprocket arranged on the pay-off drum, and a chain connected between the driving sprocket and the driven sprocket.

[0013] In particular, the drive transition assembly also includes a motor mounting plate for mounting the motor, and an adjustment plate and a limit bolt are provided on the base, and the extension direction of the limit bolt is parallel to the extension direction of the chain; the motor mounting plate is adjustably connected to the adjustment plate, and the bottom end of the limit bolt abuts against the motor mounting plate and the bottom extension length of the limit bolt is adjustable.

[0014] Particularly, a mounting groove is provided at the bottom of the pay-off drum, the mounting groove is sleeved on the driven sprocket, and the pay-off drum is fixedly connected to the driven sprocket by bolts.

[0015] In particular, the support unit also includes two base swing arms respectively arranged on both sides of the speed adjustment swing arm, the base swing arm is arranged on the base through a base swing arm bracket, and the base swing arm is provided with a base wire buckle, and the end of the wire rod steel bar passes through the base wire buckle.

[0016] In particular, a wire-paying steel pipe is horizontally arranged on the wire-paying drum and a wire-paying column is vertically arranged, and the wire rod steel bar is placed on the wire-paying steel pipe and sleeved on the outer side of the wire-paying column.

[0017] The active pay-off frame for the hoop bending machine of the present invention comprises a supporting unit, a pay-off unit and a speed regulating unit. The pay-off drum is driven by a motor to rotate, and the wire rod placed on the pay-off drum rotates synchronously with the pay-off drum to realize the function of active pay-off, which solves the problem that the prior art cannot actively pay-off. The speed regulating unit can start and stop the motor when the pay-off speed is too fast or too slow, thereby adjusting the rotation speed of the wire rod (i.e. the rotation speed of the pay-off drum) to avoid the surface of the wire rod being worn due to the pulling of the hoop bending machine, and the pay-off efficiency is high. The motor is started and stopped in time to avoid the wire rod being pulled or piled up at the feeding end of the hoop bending machine. The structure is reasonable and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a combined structure of an active pay-off frame and wire rod steel bars for a hoop bending machine provided in a specific embodiment of the present invention;

[0019] Figure 2 It is a top view of a combined structure of an active pay-off frame and wire rod steel bars for a hoop bending machine provided in a specific embodiment of the present invention;

[0020] Figure 3 It is a cross-sectional view of an active pay-off stand for a hoop bending machine provided in a specific embodiment of the present invention;

[0021] Figure 4 It is a top view of the structure of the active pay-off stand for the hoop bending machine provided by the specific embodiment of the present invention after the pay-off reel is removed;

[0022] Figure 5 is a cross-sectional view of a speed regulating swing arm and a swing arm bracket assembly provided in a specific embodiment of the present invention;

[0023] Figure 6 is a cross-sectional view of a pay-off unit provided in a specific embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of a base swing arm, a base swing arm bracket and a base wire buckle combination structure provided by a specific embodiment of the present invention;

[0025] Figure 8 It is a structural schematic diagram of an active pay-off stand for a hoop bending machine provided in a specific embodiment of the present invention when the wire is not paid out or the wire is paid out too fast;

[0026] Fig. 9 It is a structural schematic diagram of an active pay-off stand for a hoop bending machine provided in a specific embodiment of the present invention when the pay-off is too slow. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] This embodiment discloses an active pay-off frame for a hoop bending machine. Figures 1 to 9 As shown, the active pay-off frame includes a support unit, a pay-off unit and a speed adjustment unit. The support unit includes a base 11 and a pay-off drum 12 for placing the wire rod steel bar 4. The wire rod steel bar 4 can rotate synchronously with the pay-off drum 12, and the pay-off drum 12 is arranged on the base 1. The pay-off unit includes a motor 21, and the output end of the motor 21 is connected to the pay-off drum 12 through a driving transition component and can drive the pay-off drum 12 to rotate. The speed adjustment unit includes a speed adjustment swing arm 31, a start-stop member and a speed adjustment wire buckle 32 for passing the end of the wire rod steel bar 4. The speed adjustment wire buckle 32 is installed on the speed adjustment swing arm 31, and the speed adjustment swing arm 31 is arranged on the base 11 through a swing arm bracket assembly 33; the speed adjustment swing arm 31 has a pay-off state position and a stop state position and can swing between the two state positions. When the speed adjustment swing arm 31 is in the pay-off state position, the start-stop member starts the motor 21, and when the speed adjustment swing arm 31 is in the stop state position, the start-stop member stops the motor 21.

[0029] The active pay-off stand is provided with a motor 21, which drives the pay-off drum 12 to rotate. The wire rod 4 placed on the pay-off drum 12 rotates synchronously with the wire rod 4, thereby realizing the function of active pay-off, solving the problem that the prior art cannot actively pay-off. The speed adjustment unit can start and stop the motor 21 when the pay-off speed is too fast or too slow, thereby adjusting the rotation speed of the wire rod 4 (that is, the rotation speed of the pay-off drum 12) to avoid the surface of the wire rod 4 being worn due to the pulling of the hoop bending machine, and the pay-off efficiency is high. The motor 21 is started and stopped in time, which can prevent the wire rod 4 from being pulled or piled up at the feeding end of the hoop bending machine. The structure is reasonable and easy to use.

[0030] The specific implementation method of realizing that the start-stop member starts and stops the motor 21 when the speed regulating swing arm 31 is in different state positions is not limited, preferably, Figures 2 to 4 As shown, the swing arm bracket assembly 33 includes a rotating support 331, a rotating frame 332 and a speed regulating swing arm bracket 333. The speed regulating swing arm 31 is mounted on the speed regulating swing arm bracket 333, and the speed regulating swing arm bracket 333 is mounted on the rotating frame 332. The rotating frame 332 is pivotally connected to the rotating support 331 through a rotating shaft 334, and the rotating frame 332 can swing around the rotating shaft 334. A lever 335 as a start-stop member is fixedly provided on the end of the rotating shaft 334 by bolts, and the lever 335 can rotate synchronously with the rotating shaft 334. A motor switch 211 is provided on the rotating support 331, and the motor 21 can be started and stopped when the lever 335 presses the motor switch 211.

[0031] Of course, other methods can also be used to realize the start-stop component to start and stop the motor 21 when the speed adjustment swing arm 31 is in different state positions. For example, a signal generating device that can emit signals in a straight line direction is provided on the rotating shaft 334. When the rotating shaft 334 rotates to a set angle, the signal generating device is set toward the motor 21. At this time, the signal covers the motor 21, thereby controlling the start and stop of the motor 21.

[0032] On the basis of the above structure, a lifting ring 3321 is installed on the rotating frame 332, an adjusting block 111 is provided on the base 11, and a spring 336 in a stretched state is connected between the lifting ring 3321 and the adjusting block 111. In order to balance the force, two lifting rings 3321 can be symmetrically installed on the rotating frame 332, two connecting structures can be symmetrically provided on the adjusting block 111, and two springs 336 are respectively provided between the corresponding lifting rings 3321 and the connecting structures on the adjusting block 111.

[0033] An upper limit rod 3311 and a lower limit rod 3312 for limiting the swing angle of the rotating frame 332 are provided on the rotating support 331. When the rotating frame 332 abuts against the upper limit rod 3311, the speed regulating swing arm 31 is in the line-stopping state position. When the rotating frame 332 abuts against the lower limit rod 3312, the speed regulating swing arm 31 is in the line-releasing state position, thereby limiting the swing angle of the rotating frame 332.

[0034] The specific setting positions of the upper limit rod 3311 and the lower limit rod 3312 are not limited, preferably, Figure 5 As shown, the rotating support 331 includes a rotating support upper plate 3313 and a rotating support lower plate 3314 which are arranged in parallel, and through holes are coaxially arranged on the rotating support upper plate 3313 and the rotating support lower plate 3314 respectively, and the rotating frame 332 is arranged between the rotating support upper plate 3313 and the rotating support lower plate 3314, and the rotating shaft 334 passes through the through holes on the rotating support upper plate 3313, the rotating frame 332 and the rotating support lower plate 3314 in sequence, so that the rotating frame 332 is pivotally mounted on the rotating support 331. The upper limit rod 3311 and the lower limit rod 3312 are both arranged between the upper plate 3313 of the rotating support and the lower plate 3314 of the rotating support and are respectively located on both sides of the rotating frame 332. The structures of the upper limit rod 3311 and the lower limit rod 3312 are more stable. When the rotating frame 332 hits the upper limit rod 3311 or the lower limit rod 3312 at a higher rotation speed, it will not cause the upper limit rod 3311 or the lower limit rod 3312 to be skewed or deformed.

[0035] Based on the above structure, Figure 6As shown, the drive transition assembly includes a driving sprocket 22 connected to the output end of the motor 21 through a tension sleeve, a driven sprocket 23 arranged on the pay-off drum 12, and a chain 24 connected between the driving sprocket 22 and the driven sprocket 23. The center hole of the driven sprocket 23 is connected to the sprocket shaft 26 through a tension sleeve, and the sprocket shaft 26 is arranged in a sleeve 27, and the sleeve 27 is fixed on the base 11.

[0036] Specifically, the sprocket shaft 26 is stepped, the driven sprocket 23 is connected to the upper end of the sprocket shaft 26 through a tension sleeve, and the bottom surface of the driven sprocket 23 abuts against the step structure of the sprocket shaft 26. The lower end of the sprocket shaft 26 partially penetrates into the sleeve 27, and a bearing is provided between the outer peripheral surface of the sprocket shaft 26 and the inner peripheral wall of the sleeve 27. The inner peripheral wall of the sleeve 27 forms a step surface, and the bearing abuts against the step surface. The end of the sprocket shaft 26 is a screw structure, and the screw structure locks the sprocket shaft 26 on the sleeve 27 through a round nut and a stop washer.

[0037] On the basis of the above structure, the drive transition assembly also includes a motor mounting plate 25 for mounting the motor 21, and an adjustment plate 112 and a limit bolt 113 are provided on the base 11, and the extension direction of the limit bolt 113 is parallel to the extension direction of the chain 24. The motor mounting plate 25 is connected to the adjustment plate 112 in an adjustable manner, and the bottom end of the limit bolt 113 abuts against the motor mounting plate 25, and the bottom extension length of the limit bolt 113 is adjustable. By adjusting the extension length of the limit bolt 113, the position of the motor mounting plate 25 can be changed, thereby changing the distance between the driving sprocket 22 and the driven sprocket 23, and realizing the tension of the chain 24.

[0038] The motor mounting plate 25 is provided with a long hole 251, and the motor mounting plate 25 is connected to the adjustment plate 112 by bolts. When not locked, the bolts can be in the long hole 251. After a suitable position is selected, the bolts lock and connect the motor mounting plate 25 and the adjustment plate 112, so that the motor mounting plate 25 is connected to the adjustment plate 112 in an adjustable position.

[0039] The specific connection method between the pay-off drum 12 and the driven sprocket 23 is not limited, as long as the driven sprocket 23 and the pay-off drum 12 can rotate synchronously. Preferably, a mounting groove is provided at the bottom of the pay-off drum 12, and the mounting groove is sleeved on the driven sprocket 23. The pay-off drum 12 and the driven sprocket 23 are fixedly connected by bolts. The connection structure is simple and stable. Even if the pay-off drum 12 is very heavy and has a large inertia due to the placement of a large number of wire rod steel bars 4, the driven sprocket 23 can quickly start and stop the pay-off drum 12, which is more convenient to use.

[0040] The pay-off drum 12 is provided with a pay-off steel pipe 121 and a pay-off column 122, the wire rod steel bar 4 is placed on the horizontally arranged pay-off steel pipe 121, and the vertically arranged pay-off column 122 is inserted into the wire rod steel bar 4. The placement position of the wire rod steel bar 4 is more stable, avoiding the overall horizontal movement of the wire rod steel bar 4 during the pay-off process, and ensuring that the pay-off work can be carried out stably and smoothly.

[0041] Based on the above structure, Figures 1 to 4 as well as Figure 7 As shown, the support unit also includes two base swing arms 13 respectively arranged on both sides of the speed adjustment swing arm 31, and the base swing arm 13 is arranged on the base 11 through a base swing arm bracket 14. Preferably, the base swing arm 13 is inserted into the base swing arm bracket 14, and then the base swing arm 13 is tightened from the side by bolts.

[0042] The base swing arm 13 is provided with a base wire-passing buckle 15, and the end of the wire rod steel bar 4 passes through a base wire-passing buckle 15, a speed-adjusting wire-passing buckle 32 and another base wire-passing buckle 15 in sequence, and then reaches the feeding end of the hoop bending machine. The base wire-passing buckle 15 and the speed-adjusting wire-passing buckle 32 can both guide the wire rod steel bar 4. In order to reduce the resistance to the wire rod steel bar 4 passing therethrough, the base wire-passing buckle 15 and the speed-adjusting wire-passing buckle 32 preferably include rollers arranged in pairs and capable of rotating around their own axes, and the wire rod steel bar 4 passes between the two rollers. The outer peripheral walls of the two rollers are in contact with the outer peripheral walls of the wire rod steel bar 4 respectively and are slightly squeezed to a certain extent. The degree of squeezing of the wire rod steel bar 4 by the two rollers is based on not significantly hindering the wire rod steel bar 4 from passing through.

[0043] The working process of the active pay-off stand for the hoop bending machine:

[0044] like Figure 8 As shown, when the hoop bender and the motor 21 are not working, the hoop bender will not pull the wire rod 4. At this time, the force on the speed adjustment swing arm 31 is only the tension from the spring 336. The adjustment block 111 is fixed on the base 11 and cannot move, so the ring 3321 "moves" in the direction of the adjustment block 111 under the pull of the spring 336. Because the ring 3321 is fixed on the rotating frame 332, and the rotating frame 332 is installed on the rotating support upper plate 3313 through the rotating shaft 334, the ring 3321 is actually swinging around the rotating shaft 334 under the pull of the spring 336, thereby shortening the distance between the ring 3321 and the adjustment block 111.

[0045] When the hanging ring 3321 swings around the rotating shaft 334 , the rotating frame 332 also swings in the clockwise direction around the rotating shaft 334 , until the side of the rotating frame 332 abuts against the upper limit rod 3311 , and the rotating frame 332 stops swinging.

[0046] When the hoop bending machine and the motor 21 are in working condition, the motor 21 drives the driven sprocket 23 to rotate through the driving sprocket 22 and the chain 24, and the driven sprocket 23 drives the wire pay-off drum 12 to rotate synchronously. When the wire pay-off drum 12 rotates, the wire rod steel bar 4 will push its front structure to move toward the feed end of the hoop bending machine, thereby realizing the active wire pay-off of the wire rod steel bar 4.

[0047] When the wire rod steel bar 4 is released at too fast a speed (the moving sprocket 23 and the wire release drum 12 rotate too fast), the excess wire rod steel bar 4 is accumulated at the feeding end of the hoop bender, so the pulling force of the hoop bender on the wire rod steel bar 4 is very small. Once the pulling force of the hoop bender on the wire rod steel bar 4 is less than the pulling force of the spring 336 on the lifting ring 3321, the spring 336 will pull the lifting ring 3321 toward the adjustment block 111, and the rotating frame 332 will swing clockwise around the rotating shaft 334 until the side of the rotating frame 332 abuts against the upper limit rod 3311. At this time, the lever 335 stops the operation of the motor 21 through the motor switch 211.

[0048] When the wire rod steel bar 4 is unwinding too slowly (the moving sprocket 23 and the unwinding drum 12 rotate too slowly), the hoop bending machine will actively pull the wire rod steel bar 4, so the wire rod steel bar 4 will be subjected to a large pulling force. Fig. 9 As shown, this pulling force is greater than the pulling force of the spring 336 on the hanging ring 3321. Driven by the speed regulating line buckle 32 and the speed regulating swing arm 31, the rotating frame 332 swings counterclockwise around the rotating shaft 334 until the other side of the rotating frame 332 abuts against the lower limit rod 3312, and the lever 335 releases the motor switch 211, and the motor 21 starts working.

[0049] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An active pay-off stand for a hoop bending machine, characterized in that: include: A support unit, comprising a base (11) and a pay-off drum (12) for placing the wire rod reinforcement (4), wherein the wire rod reinforcement (4) can rotate synchronously with the pay-off drum (12), and the pay-off drum (12) is arranged on the base (11); A wire pay-off unit, comprising a motor (21), wherein an output end of the motor (21) is connected to the wire pay-off drum (12) via a driving transition component and can drive the wire pay-off drum (12) to rotate; and A speed regulating unit, comprising a speed regulating swing arm (31), a start-stop member and a speed regulating wire-passing buckle (32) for passing the end of the wire rod steel bar (4), wherein the speed regulating wire-passing buckle (32) is mounted on the speed regulating swing arm (31), and the speed regulating swing arm (31) is arranged on the base (11) via a swing arm bracket assembly (33); the speed regulating swing arm (31) has a wire-releasing state position and a wire-stopping state position and can swing between the two state positions; when the speed regulating swing arm (31) is in the wire-releasing state position, the start-stop member starts the motor (21), and when the speed regulating swing arm (31) is in the wire-stopping state position, the start-stop member stops the motor (21); The swing arm support assembly (33) comprises a rotating support (331), a rotating frame (332) and a speed regulating swing arm support (333); the speed regulating swing arm (31) is mounted on the speed regulating swing arm support (333); the speed regulating swing arm support (333) is mounted on the rotating frame (332); the rotating frame (332) is pivotally connected to the rotating support (331) via a rotating shaft (334); a lever (335) serving as the start / stop member is provided at the end of the rotating shaft (334); the lever (335) can rotate synchronously with the rotating shaft (334); a motor switch (211) is provided on the rotating support (331); when the lever (335) presses the motor switch (211), the motor (21) can be started or stopped; An upper limit rod (3311) and a lower limit rod (3312) for limiting the swing angle of the rotating frame (332) are provided on the rotating support (331); when the rotating frame (332) abuts against the upper limit rod (3311), the speed adjustment swing arm (31) is in a line stopping state position; when the rotating frame (332) abuts against the lower limit rod (3312), the speed adjustment swing arm (31) is in a line releasing state position.

2. The active pay-off stand for a hoop bending machine according to claim 1, characterized in that: A hanging ring (3321) is installed on the rotating frame (332), an adjusting block (111) is provided on the base (11), and a spring (336) in a tensioned state is connected between the hanging ring (3321) and the adjusting block (111).

3. The active pay-off stand for a hoop bending machine according to claim 1, characterized in that: The rotating support (331) comprises a rotating support upper plate (3313) and a rotating support lower plate (3314) which are arranged in parallel, the rotating support upper plate (3313) and the rotating support lower plate (3314) are respectively coaxially provided with through holes, the rotating frame (332) is arranged between the rotating support upper plate (3313) and the rotating support lower plate (3314), and the rotating shaft (334) passes through the through holes on the rotating support upper plate (3313), the rotating frame (332) and the rotating support lower plate (3314) in sequence; the upper limit rod (3311) and the lower limit rod (3312) are both arranged between the rotating support upper plate (3313) and the rotating support lower plate (3314) and are respectively located on both sides of the rotating frame (332).

4. The active pay-off stand for a hoop bending machine according to any one of claims 1 to 3, characterized in that: The drive transition assembly comprises a driving sprocket (22) arranged on the output end of the motor (21), a driven sprocket (23) arranged on the pay-off reel (12), and a chain (24) connected between the driving sprocket (22) and the driven sprocket (23).

5. The active pay-off stand for the hoop bending machine according to claim 4, characterized in that: The drive transition assembly also includes a motor mounting plate (25) for mounting the motor (21); an adjustment plate (112) and a limit bolt (113) are provided on the base (11); an extension direction of the limit bolt (113) is parallel to an extension direction of the chain (24); the motor mounting plate (25) is adjustably connected to the adjustment plate (112); a bottom end of the limit bolt (113) abuts against the motor mounting plate (25); and a bottom extension length of the limit bolt (113) is adjustable.

6. The active pay-off stand for a hoop bending machine according to claim 4, characterized in that: The bottom of the pay-off drum (12) is provided with a mounting groove, the mounting groove is sleeved on the driven sprocket (23), and the pay-off drum (12) and the driven sprocket (23) are fixedly connected by bolts.

7. The active pay-off stand for a hoop bending machine according to any one of claims 1 to 3, characterized in that: The support unit further comprises two base swing arms (13) respectively arranged on both sides of the speed adjustment swing arm (31); the base swing arms (13) are arranged on the base (11) via base swing arm brackets (14); a base wire-passing buckle (15) is arranged on the base swing arm (13); and an end of the wire rod steel bar (4) passes through the base wire-passing buckle (15).

8. The active pay-off stand for a hoop bending machine according to any one of claims 1 to 3, characterized in that: A wire-paying steel pipe (121) is horizontally arranged on the wire-paying drum (12) and a wire-paying upright column (122) is vertically arranged. The wire rod steel bar (4) is placed on the wire-paying steel pipe (121) and sleeved on the outside of the wire-paying upright column (122).

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