Steel bar sawing and threading all-in-one machine

Abstract

The invention relates to the technical field of all-in-one machines, and discloses a steel bar sawing and threading all-in-one machine which comprises a mounting frame, an annular guide rail is arranged at the top end of the mounting frame, a plurality of sets of normally-closed clamp mechanisms are arranged at the top end of the annular guide rail, and each normally-closed clamp mechanism comprises an upper clamp cover, a lower clamp body, a connecting roller, a torsion spring and a conveying sliding table. The upper clamp cover is arranged at the top end of the lower clamp body, the lower clamp body is arranged at the top end of the conveying sliding table, the connecting rolling wheel is arranged on one side of the upper clamp cover, the linear guide rail is arranged at the top end of the mounting frame, and the follow-up redundancy supporting mechanism is arranged at the top end of the linear guide rail. Steel bar deflection and tailing waste are eliminated through multi-point relay clamping; the follow-up support provides rigid constraint at a sawing point to ensure that a notch is vertical; accurate positioning of the reinforcing steel bars from conveying to machining is achieved through redundancy constraint and undisturbed handover, secondary errors are thoroughly eliminated, and mantle thread chatter marks are completely eradicated; closed-loop circulation conveying works in parallel, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of integrated machine technology, specifically to an integrated machine for sawing and threading steel bars. Background Technology

[0002] The patent application with publication number CN201810481123.X includes a rebar conveying mechanism and a lifting and clamping mechanism. The rebar conveying mechanism includes a guide frame with a first guide shaft fixed on it. A guide seat is sleeved on the first guide shaft, and a lateral drive assembly is connected to the guide seat. The lateral drive assembly can drive the guide seat to slide along the first guide shaft. The lifting and clamping mechanism includes a guide fixing seat, which is fixed on the guide seat. A lifting assembly is fixed on the guide fixing seat. A transition seat is provided at the output end of the lifting assembly, and a clamping assembly is provided on the transition seat for clamping the rebar.

[0003] The advantages are as follows: the lifting components in the lifting and clamping mechanism move up and down to receive the sawn steel bars, which improves the stability and reliability of steel bar transportation and effectively prevents damage to the steel bars during the transfer process; the clamping components in the lifting and clamping mechanism firmly hold the steel bars to prevent them from slipping during the movement; and the steel bar transfer mechanism can accurately transfer the steel bars from the sawing machine to the threading machine to realize the threading processing of the steel bars, which significantly improves production efficiency.

[0004] The existing technologies, including the aforementioned patents, often have the following drawbacks: single-point clamping causes long steel bars to form cantilever beams, resulting in the free end drooping and tailing, and the tail material cannot be grabbed, leading to serious waste. During processing, the middle is suspended without support, causing sawing to bend and threading to vibrate. Intermittent reciprocating motion has idle strokes, resulting in low efficiency. Switching between workstations requires secondary positioning, and the two clamping centers do not coincide, causing positioning errors and resulting in chattering on the threads. It is difficult to achieve both processing quality and efficiency. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] Based on this, the purpose of this invention is to provide a steel bar sawing and threading integrated machine to solve the technical problems of single-point clamping causing long steel bars to form a cantilever beam, resulting in the free end drooping and tailing, and the tail material being unable to be grabbed and wasted seriously; the middle is suspended without support during processing, resulting in bending during sawing and vibration during threading; the intermittent reciprocating motion has idle strokes, resulting in low efficiency; the need for secondary positioning when switching workstations, and the non-coincidence of the two clamping centers causing positioning errors, resulting in chattering marks on the threads, making it difficult to achieve both processing quality and efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a rebar sawing and threading integrated machine, comprising a mounting frame, an annular guide rail at the top of the mounting frame, and multiple normally closed clamping mechanisms at the top of the annular guide rail. Each normally closed clamping mechanism includes an upper clamp cover, a lower clamp body, a connecting roller, a torsion spring, and a conveying slide. The upper clamp cover is located at the top of the lower clamp body, the lower clamp body is located at the top of the conveying slide, the connecting roller is located on one side of the upper clamp cover, the torsion spring is located at the intersection of the upper clamp cover and the lower clamp body, the conveying slide is located at the top of the annular guide rail, a sawing mechanism is located at the top of the mounting frame, a threading machine is located at the top of the mounting frame, a linear guide rail is located at the top of the mounting frame, and a follow-up redundant support mechanism is located at the top of the linear guide rail.

[0009] By adopting the above technical solution, when the conveyor slide moves to the loading station at the front end of the mounting frame, the cylinder on the cylinder bracket above the station is activated, driving the pressure plate at its bottom to extend downward. The pressure plate presses down on the connecting rollers at the tail of all the upper clamp covers at the station, overcoming the spring force of the torsion spring, causing the upper clamp covers to flip upward. At this time, the external loading device or robotic arm lifts the steel bar into the V-groove at the top of the lower clamp body. Then the cylinder resets, the pressure plate is lifted upward, disengaging from the connecting rollers, the torsion spring releases energy, and drives the upper clamp covers to close rapidly downward, clamping the steel bar.

[0010] Furthermore, the follow-up redundant support mechanism includes a movable slide, a support arm, a first cylinder, a clamping wheel, a second cylinder, a V-shaped roller bracket, a limiting plate, and an elastic wheel. The movable slide is located at the top of the linear guide rail, the support arm is located at the top of the movable slide, the first cylinder is located at the top of the support arm, the clamping wheel is sleeved on the output end of the first cylinder and located above the V-shaped roller bracket, the second cylinder is located at the top of the movable slide, the bottom end of the V-shaped roller bracket is sleeved on the output end of the second cylinder, the limiting plate is fixed to the top of the movable slide, and the elastic wheel is rotatably connected to the top of the V-shaped roller bracket.

[0011] By adopting the above technical solution, all the conveying slides holding the reinforcing bars move backward at a uniform speed along the top working section of the annular guide rail under the action of the drive device. When the reinforcing bar is transported to below the sawing mechanism, the control system activates the follow-up redundant support mechanism. The second motor drives the moving slide to accelerate along the linear guide rail to the same speed as the conveying slide, achieving synchronous following. The second cylinder extends, driving the V-shaped roller bracket to rise along the slide of the limiting plate, so that the V-shaped rollers at the bottom of the V-shaped roller bracket support the reinforcing bar to be cut from below. Then, the first cylinder extends, driving the clamping wheel to move towards the reinforcing bar. The steel bar is pressed down from above, firmly constraining it between the V-shaped roller and the clamping roller. At this time, the third cylinder drives the sawing arm to swing downward around the connecting axis, and the first motor drives the saw blade to rotate at high speed to saw the steel bar. Due to the rigid support provided by the follow-up support mechanism near the cutting point, the deflection and vibration of the steel bar are effectively suppressed, ensuring the perpendicularity and flatness of the cut. After sawing is completed, the sawing arm retracts upward, the first cylinder retracts to release the clamping roller, but the second cylinder remains extended, the V-shaped roller still holds the steel bar, and the follow-up support mechanism continues to follow the steel bar and escort it to the next work station.

[0012] Furthermore, the sawing mechanism includes a saw blade, a sawing arm, a connecting shaft, and a first motor. The saw blade is disposed on one side of the sawing arm, the sawing arm is disposed at the top of the connecting shaft, the connecting shaft is disposed at the top of the mounting frame, the first motor is disposed on one side of the sawing arm, a three-jaw chuck is disposed at one end of the threading machine, a second motor is disposed inside the mounting frame and cooperates with a linear guide rail, and is used to drive the movable slide to move along the linear guide rail, a contact wheel is disposed at the bottom of the normally closed clamping mechanism and cooperates with a ring guide rail, and a bracket is disposed inside the mounting frame and cooperates with the sawing mechanism.

[0013] By adopting the above technical solution, the reinforcing bar is conveyed to the front of the threading machine. The three-jaw chuck at the front of the threading machine extends and clamps the front end of the reinforcing bar. At this time, the V-shaped roller of the follow-up redundant support mechanism still supports the reinforcing bar, and the rear end of the reinforcing bar is still held by the clamps on multiple conveying slides. After the control system confirms that the clamping force of the three-jaw chuck reaches the threshold, it instructs the follow-up support mechanism to release and return to the standby position: the second cylinder retracts to lower the V-shaped roller support, the first cylinder retracts to completely detach the clamping wheel from the reinforcing bar, and the second motor drives the moving slide to return to the initial position (it should be noted that when both the first and second cylinders retract, the follow-up redundant support mechanism will not touch the normally closed clamp mechanism during the return trip). However, the clamps on the conveying slide remain in the clamping state. The threading machine starts, and the three-jaw chuck drives the reinforcing bar to rotate, completing the threading of the end of the reinforcing bar. During this process, the rear end of the reinforcing bar is clamped and fixed by multiple points, and the front end is precisely constrained by the chuck. The entire system has extremely high rigidity, effectively eliminating cutting chatter and ensuring the accuracy of thread processing.

[0014] Furthermore, a cylinder bracket is provided at the top of the mounting frame, a cylinder is provided at one end of the cylinder bracket, a pressure plate is provided at the bottom of the cylinder, and the pressure plate corresponds to the connecting roller. The cylinder is located inside the cylinder bracket and is provided with multiple sets of air pressure pipes. The upper clamp cover and the lower clamp body are elastically connected by a torsion spring. A V-shaped opening is provided between the upper clamp cover and the lower clamp body.

[0015] By adopting the above technical solution, after the threading is completed, the three-jaw chuck is released. In order to avoid interference between the threaded head of the steel bar and the threading machine during subsequent feeding and conveying, the control system commands the conveying slide drive motor to briefly reverse, driving the steel bar to move forward a small distance (default value is 20 centimeters), so that the front end of the steel bar is completely moved to the front of the threading machine.

[0016] Furthermore, the mounting bracket is equipped with a third cylinder, which cooperates with the sawing mechanism. The connecting shaft is equipped with two sets of bearings. The clamping wheel is connected to the first cylinder with a rotating shaft. The limiting plate is equipped with a slide rail that cooperates with the V-shaped roller bracket. The limiting plate is fixed to the movable slide by screws. The support arm is equipped with a cavity that engages with the first cylinder.

[0017] By adopting the above technical solution, the steel bar will be retracted to the unloading station due to the retraction. The cylinder at the unloading station will be activated, the pressure plate will press down on the connecting roller, and the normally closed clamp mechanism will be opened. The external feeding device or robotic arm will take away the processed finished steel bar. The unloaded conveyor slide will continue to move backward along the circular guide rail. After turning at the end of the guide rail, it will return to the front feeding station unloaded from below the mounting frame.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0020] This invention employs multiple normally closed clamping mechanisms that close sequentially along a circular guide rail, forming a multi-point relay clamping of the entire reinforcing bar. Compared to existing technologies where single-point clamping causes long reinforcing bars to form cantilever beams and result in the free end drooping and swinging, this solution distributes the concentrated load into continuous support, fundamentally changing the stress model of the reinforcing bar. When the tail of the reinforcing bar reaches the loading station, the clamp on the last trolley can still firmly grasp it, allowing the tail material that would otherwise be discarded due to inability to clamp to be fully utilized, eliminating material waste. Simultaneously, multi-point clamping ensures that the reinforcing bar is supported throughout its entire length, effectively suppressing deflection deformation caused by its own weight.

[0021] This invention features a redundant, follow-up support mechanism below the sawing mechanism. When the reinforcing bar is conveyed to the sawing position, the moving slide and the conveying slide are precisely synchronized. The second cylinder drives the V-shaped roller bracket to rise, and the first cylinder drives the clamping wheel to press the reinforcing bar down from above, forming a rigid constraint near the cutting point. This design solves the defects of existing technologies where the reinforcing bar is suspended in the middle without support and bends under stress during sawing. Because the support point coincides with the sawing point and follows it, the reinforcing bar remains completely still when the saw blade cuts in, fundamentally eliminating deflection and vibration, ensuring the perpendicularity and flatness of the cut, and extending the saw blade's lifespan.

[0022] This invention employs a redundant constraint logic of "first receiving, then releasing" in the threading process. When the three-jaw chuck clamps the front end of the rebar, the V-shaped rollers of the follow-up support mechanism continue to support it, and the rear section of the rebar is still held by clamps on multiple conveyor slides. Only after the control system confirms that the chuck clamping force is sufficient does it release the support mechanism and the rear clamps sequentially. This process achieves a seamless transition of the rebar from the conveying state to the processing state, ensuring that the spatial position of the rebar is always precisely constrained and never released. Compared to the shortcomings of existing technologies where station switching requires secondary positioning and the misalignment of the two clamping centers leads to positioning errors, this solution ensures strict alignment between the sawing center and the threading center, resulting in chatter-free thread processing and a significant increase in yield. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first perspective;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point A;

[0025] Figure 3 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of point B;

[0027] Figure 5 This is a schematic diagram of the overall structure of the present invention from a third perspective;

[0028] Figure 6 For the present invention Figure 5 Enlarged view of point C;

[0029] Figure 7 This is a schematic diagram of the internal structure of the present invention;

[0030] Figure 8 This is a schematic diagram showing the position of the normally closed clamping mechanism of the present invention;

[0031] Figure 9 This is a schematic diagram of the position of the follow-up redundant support mechanism of the present invention.

[0032] In the diagram: 1. Mounting bracket; 2. Normally closed clamping mechanism; 201. Upper clamp cover; 202. Lower clamp body; 203. Connecting roller; 204. Torsion spring; 205. Conveying slide; 3. Circular guide rail; 4. Contact wheel; 5. Cylinder; 6. Bracket; 7. Sawing mechanism; 701. Saw blade; 702. Sawing arm; 703. Connecting shaft; 704. First motor; 8. Follow-up redundant support mechanism; 801. Moving slide; 802. Support arm; 803. First cylinder; 804. Clamping wheel; 805. Second cylinder; 806. V-shaped roller bracket; 807. Limiting plate; 808. Elastic wheel; 9. Linear guide rail; 10. Threading machine; 11. Three-jaw chuck; 12. Second motor; 13. Third cylinder; 14. Cylinder bracket; 15. Pressure plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0034] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0035] like Figures 1 to 9As shown, the present invention provides a rebar sawing and threading integrated machine, including a mounting frame 1. A ring guide rail 3 is provided at the top of the mounting frame 1. Multiple normally closed clamping mechanisms 2 are provided at the top of the ring guide rail 3. Each normally closed clamping mechanism 2 includes an upper clamp cover 201, a lower clamp body 202, a connecting roller 203, a torsion spring 204, and a conveying slide 205. The upper clamp cover 201 is located at the top of the lower clamp body 202, and the lower clamp body 202 is located at the top of the conveying slide 205. The connecting roller 203 is located on one side of the upper clamp cover 201. The torsion spring 204 is located at the intersection of the upper clamp cover 201 and the lower clamp body 202. The conveying slide 205 is located at the top of the ring guide rail 3. A sawing mechanism 7 and a threading machine 10 are provided at the top of the mounting frame 1. A linear guide rail 9 is provided at the top of the frame 1, and a follow-up redundant support mechanism 8 is provided at the top of the linear guide rail 9. When the conveyor slide 205 moves to the loading station at the front end of the mounting frame 1, the cylinder 5 on the cylinder bracket 14 above the station is activated, driving the pressure plate 15 at its bottom to extend downward. The pressure plate 15 presses down on the connecting rollers 203 at the tail of all the upper clamp covers 201 at the station, overcoming the elastic force of the torsion spring 204, causing the upper clamp covers 201 to flip upward. At this time, the external loading device or robotic arm lifts the steel bar into the V-shaped groove at the top of the lower clamp body 202. Then the cylinder 5 resets, the pressure plate 15 is lifted upward, disengaging from the connecting rollers 203, the torsion spring 204 releases energy, and drives the upper clamp covers 201 to quickly close downward, clamping the steel bar.

[0036] For example, the follow-up redundant support mechanism 8 includes a movable slide 801, a support arm 802, a first cylinder 803, a clamping wheel 804, a second cylinder 805, a V-shaped roller bracket 806, a limiting plate 807, and an elastic wheel 808. The movable slide 801 is located at the top of the linear guide rail 9, the support arm 802 is located at the top of the movable slide 801, the first cylinder 803 is located at the top of the support arm 802, the clamping wheel 804 is sleeved on the output end of the first cylinder 803 and located above the V-shaped roller bracket 806, the second cylinder 805 is located at the top of the movable slide 801, the bottom end of the V-shaped roller bracket 806 is sleeved on the output end of the second cylinder 805, the limiting plate 807 is fixed to the top of the movable slide 801, and the elastic wheel 808 is rotatably connected to the top of the V-shaped roller bracket 806. Additionally, multiple conveyor slides 205 are located behind this workstation. The normally closed clamping mechanism 2 can also pass through the front opening clamping station and close in sequence to form a multi-point relay clamping of the whole steel bar. All the conveying slides 205 that clamp the steel bars move backward at a constant speed along the top working section of the ring guide rail 3 under the action of the driving device. When the steel bar is transported to the bottom of the sawing mechanism 7, the control system starts the follow-up redundant support mechanism 8. The second motor 12 drives the moving slide 801 to accelerate along the linear guide rail 9 to the same speed as the conveying slide 205 to achieve synchronous following. The second cylinder 805 extends and drives the V-shaped roller bracket 806 to rise along the slide of the limiting plate 807, so that the V-shaped roller at the bottom of the V-shaped roller bracket 806 supports the steel bar to be cut from below. Then the first cylinder 803 extends and drives the clamping wheel 804 to move towards the steel bar and press the steel bar from above, firmly constraining the steel bar between the V-shaped roller and the clamping wheel.

[0037] For example, the sawing mechanism 7 includes a saw blade 701, a sawing arm 702, a connecting shaft 703, and a first motor 704. The saw blade 701 is disposed on one side of the sawing arm 702, the sawing arm 702 is disposed at the top of the connecting shaft 703, the connecting shaft 703 is disposed at the top of the mounting frame 1, and the first motor 704 is disposed on one side of the sawing arm 702. A three-jaw chuck 11 is disposed at one end of the threading machine 10. A second motor 12 is disposed inside the mounting frame 1, and the second motor 12 cooperates with the linear guide rail 9 and is used to drive the movable slide 801 to move along the linear guide rail 9. A normally closed clamping mechanism 2 is provided with a contact wheel 4 at its bottom end, and the contact wheel 4 cooperates with the annular guide rail 3. The mounting frame 1 is equipped with a support 6, which cooperates with the sawing mechanism 7. The third cylinder 13 drives the sawing arm 702 to swing downward around the connecting shaft 703, and the first motor 704 drives the saw blade 701 to rotate at high speed to saw the steel bar. Due to the rigid support provided by the follow-up support mechanism near the cutting point, the bending and vibration of the steel bar are effectively suppressed, ensuring the verticality and flatness of the cut. After sawing, the sawing arm 702 retracts upward, the first cylinder 803 retracts to release the clamping wheel 804, but the second cylinder 805 remains extended, the V-shaped roller still holds the support, and the follow-up support mechanism continues to follow the steel bar and escort it to the next work station.

[0038] For example, a cylinder bracket 14 is provided at the top of the mounting frame 1, a cylinder 5 is provided at one end of the cylinder bracket 14, and a pressure plate 15 is provided at the bottom of the cylinder 5, with the pressure plate 15 corresponding to the connecting roller 203. The cylinder 5 is located inside the cylinder bracket 14 and is provided with multiple sets of air pressure pipes. The upper clamp cover 201 and the lower clamp body 202 are elastically connected by a torsion spring 204. A V-shaped opening is provided between the upper clamp cover 201 and the lower clamp body 202. The rebar is conveyed to the front of the threading machine 10, and the three-jaw chuck 11 at the front end of the threading machine 10 extends and clamps the front end of the rebar. At this time, the V-shaped roller of the follow-up redundant support mechanism 8 still supports the rebar, and the rear end of the rebar is still clamped by the clamps on multiple conveying slides 205. After the control system confirms that the clamping force of the three-jaw chuck 11 reaches the threshold, it commands... The follow-up support mechanism 8 is released and returns to the standby position: the second cylinder 805 retracts to lower the V-shaped roller bracket 806, the first cylinder 803 retracts to completely detach the clamping wheel 804 from the rebar, and the second motor 12 drives the moving slide 801 back to the initial position (it should be noted that when both the first cylinder 803 and the second cylinder 805 retract, the follow-up redundant support mechanism 8 will not touch the normally closed clamp mechanism 2 during the return journey), but the clamp on the conveying slide 205 remains in the clamping state. The threading machine 10 starts, and the three-jaw chuck 11 drives the rebar to rotate, completing the thread processing at the end of the rebar. During this process, the rear end of the rebar is clamped and fixed at multiple points, and the front end is precisely constrained by the chuck. The entire system has extremely high rigidity, effectively eliminating cutting chatter and ensuring the accuracy of thread processing.

[0039] For example, the mounting frame 1 is equipped with a third cylinder 13, which cooperates with the sawing mechanism 7. The connecting shaft 703 is equipped with a bearing, and there are two sets of bearings. The clamping wheel 804 is connected to the first cylinder 803 with a rotating shaft. The limiting plate 807 is equipped with a slide that cooperates with the V-shaped roller bracket 806. The limiting plate 807 is fixed to the moving slide 801 with screws. The support arm 802 is equipped with a cavity that engages with the first cylinder 803. After the threading is completed, the three-jaw chuck 11 is released. In order to avoid interference between the threaded end of the rebar and the threading machine 10 during subsequent feeding and conveying, the control system commands the conveying slide 205 to briefly reverse the drive motor, which drives the rebar to move forward a small distance (default value is 20 centimeters), so that the front end of the rebar is completely moved to the front of the threading machine 10.

[0040] Working principle and usage process of this invention:

[0041] When the conveyor slide 205 moves to the loading station at the front end of the mounting frame 1, the cylinder 5 on the cylinder bracket 14 above the station is activated, driving the pressure plate 15 at its bottom to extend downward. The pressure plate 15 presses down on the connecting rollers 203 at the tail of all the upper clamp covers 201 at the station, overcoming the elastic force of the torsion spring 204, causing the upper clamp covers 201 to flip upward. At this time, the external loading device or robotic arm lifts the steel bar into the V-groove at the top of the lower clamp body 202. Then the cylinder 5 resets, the pressure plate 15 is lifted upward, disengaging from the connecting rollers 203, and the torsion spring 204 releases energy, driving the upper clamp covers 201 to close rapidly downward, clamping the steel bar.

[0042] In addition, the normally closed clamping mechanism 2 on the multiple conveying slides 205 located behind this workstation can also form a multi-point relay clamping of the entire steel bar by passing through the front opening clamping workstation in sequence and closing.

[0043] All the conveying slides 205 holding the reinforcing bars move backward at a constant speed along the top working section of the annular guide rail 3 under the action of the drive device. When the reinforcing bars are transported to the bottom of the sawing mechanism 7, the control system activates the follow-up redundant support mechanism 8. The second motor 12 drives the moving slide 801 to accelerate along the linear guide rail 9 to the same speed as the conveying slide 205, achieving synchronous following. The second cylinder 805 extends, driving the V-shaped roller bracket 806 to rise along the slide of the limiting plate 807, so that the V-shaped rollers at the bottom of the V-shaped roller bracket 806 support the reinforcing bar to be cut from below. Then the first cylinder 803 extends, driving the clamping wheel 804 to move towards the reinforcing bar from above. Press down on the reinforcing bar, firmly constraining it between the V-shaped roller and the clamping wheel. At this time, the third cylinder 13 drives the sawing arm 702 to swing downward around the connecting shaft 703, and the first motor 704 drives the saw blade 701 to rotate at high speed to saw the reinforcing bar. Due to the rigid support provided by the follow-up support mechanism near the cutting point, the deflection and vibration of the reinforcing bar are effectively suppressed, ensuring the verticality and flatness of the cut. After sawing is completed, the sawing arm 702 retracts upward, the first cylinder 803 retracts to release the clamping wheel 804, but the second cylinder 805 remains extended, the V-shaped roller still holds the reinforcing bar, and the follow-up support mechanism continues to follow the reinforcing bar and escort it to the next work station.

[0044] The reinforcing bar is conveyed to the front of the threading machine 10. The three-jaw chuck 11 at the front end of the threading machine 10 extends and clamps the front end of the reinforcing bar. At this time, the V-shaped rollers of the follow-up redundant support mechanism 8 still support the reinforcing bar, and the rear end of the reinforcing bar is still held by the clamps on multiple conveying slides 205. After the control system confirms that the clamping force of the three-jaw chuck 11 has reached the threshold, it commands the follow-up support mechanism 8 to release and return to the standby position: the second cylinder 805 retracts to lower the V-shaped roller bracket 806, the first cylinder 803 retracts to completely disengage the clamping wheel 804 from the reinforcing bar, and the second motor 12 drives the movement. The slide 801 returns to its initial position (it should be noted that when both the first cylinder 803 and the second cylinder 805 retract, the follower redundant support mechanism 8 will not touch the normally closed clamp mechanism 2 during the return journey), but the clamp on the conveying slide 205 remains in the clamping state. The threading machine 10 starts, and the three-jaw chuck 11 drives the steel bar to rotate, completing the threading of the steel bar end. During this process, the rear end of the steel bar is clamped and fixed by multiple points, and the front end is precisely constrained by the chuck. The entire system has extremely high rigidity, effectively eliminating cutting chatter and ensuring the accuracy of threading.

[0045] After the threading is completed, the three-jaw chuck 11 is released. In order to avoid interference between the threaded head of the steel bar and the threading machine 10 during subsequent feeding and conveying, the control system commands the conveying slide 205 to drive the motor to reverse briefly, causing the steel bar to move forward a short distance. The default value is 20 centimeters (which can be preset according to the steel bar specifications), so that the front end of the steel bar is completely moved to the front of the threading machine 10.

[0046] At this time, the steel bar will be retracted to the unloading station due to the retraction. The cylinder 5 of the unloading station will be activated, the pressure plate 15 will press down the connecting roller 203, and the normally closed clamp mechanism 2 will be opened. The external feeding device or robotic arm will take away the finished steel bar. The unloaded conveyor slide 205 will continue to move backward along the circular guide rail 3. After turning at the end of the guide rail, it will return to the front feeding station from below the mounting frame 1 and enter the next work cycle.

[0047] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A rebar sawing and threading integrated machine, comprising a mounting frame (1), characterized in that, The mounting bracket (1) is provided with an annular guide rail (3) at its top. The annular guide rail (3) is provided with multiple normally closed clamping mechanisms (2) at its top. Each normally closed clamping mechanism (2) includes an upper clamp cover (201), a lower clamp body (202), a connecting roller (203), a torsion spring (204), and a conveying slide (205). The upper clamp cover (201) is located at the top of the lower clamp body (202), and the lower clamp body (202) is located at the top of the conveying slide (205). The connecting roller... (203) is set on one side of the upper clamp cover (201), the torsion spring (204) is set at the intersection of the upper clamp cover (201) and the lower clamp body (202), the conveying slide (205) is set at the top of the annular guide rail (3), the top of the mounting frame (1) is provided with a sawing mechanism (7), the top of the mounting frame (1) is provided with a threading machine (10), the top of the mounting frame (1) is provided with a linear guide rail (9), and the top of the linear guide rail (9) is provided with a follow-up redundant support mechanism (8).

2. The integrated steel bar sawing and threading machine according to claim 1, characterized in that: The follow-up redundant support mechanism (8) includes a movable slide (801), a support arm (802), a first cylinder (803), a clamping wheel (804), a second cylinder (805), a V-shaped roller bracket (806), a limiting plate (807), and an elastic wheel (808). The movable slide (801) is located at the top of the linear guide rail (9), the support arm (802) is located at the top of the movable slide (801), and the first cylinder (803) is located at the top of the support arm (808). At the top of 802, the clamping wheel (804) is sleeved on the output end of the first cylinder (803) and located above the V-shaped roller bracket (806). The second cylinder (805) is set at the top of the movable slide (801). The bottom end of the V-shaped roller bracket (806) is sleeved on the output end of the second cylinder (805). The limiting plate (807) is fixed at the top of the movable slide (801). The elastic wheel (808) is rotatably connected to the top of the V-shaped roller bracket (806).

3. The integrated steel bar sawing and threading machine according to claim 1, characterized in that: The sawing mechanism (7) includes a saw blade (701), a sawing arm (702), a connecting shaft (703), and a first motor (704). The saw blade (701) is located on one side of the sawing arm (702), the sawing arm (702) is located at the top of the connecting shaft (703), the connecting shaft (703) is located at the top of the mounting bracket (1), and the first motor (704) is located on one side of the sawing arm (702).

4. The integrated steel bar sawing and threading machine according to claim 1, characterized in that: The threading machine (10) is provided with a three-jaw chuck (11) at one end. The mounting frame (1) is provided with a second motor (12), which cooperates with the linear guide rail (9) and is used to drive the moving slide (801) to move along the linear guide rail (9). The normally closed clamping mechanism (2) is provided with a contact wheel (4) at the bottom end, which cooperates with the annular guide rail (3). The mounting frame (1) is provided with a bracket (6), which cooperates with the sawing mechanism (7).

5. The integrated steel bar sawing and threading machine according to claim 1, characterized in that: The mounting bracket (1) is provided with a cylinder bracket (14) at the top, and a cylinder (5) is provided at one end of the cylinder bracket (14).

6. The integrated steel bar sawing and threading machine according to claim 5, characterized in that: The cylinder (5) is provided with a pressure plate (15) at the bottom end, and the pressure plate (15) corresponds to the connecting roller (203). The cylinder (5) is located inside the cylinder bracket (14) and is provided with multiple sets of air pressure pipes.

7. The integrated steel bar sawing and threading machine according to claim 1, characterized in that: The upper clamp cover (201) and the lower clamp body (202) are elastically connected by a torsion spring (204), and a V-shaped opening is provided between the upper clamp cover (201) and the lower clamp body (202).

8. The integrated steel bar sawing and threading machine according to claim 1, characterized in that: The mounting bracket (1) is equipped with a third cylinder (13), and the third cylinder (13) cooperates with the sawing mechanism (7). The connecting shaft (703) is equipped with a bearing, and the number of bearings is two sets.

9. A steel bar sawing and threading integrated machine according to claim 2, characterized in that: A rotating shaft is provided at the connection between the clamping wheel (804) and the first cylinder (803), and a slide rail is provided inside the limiting plate (807) to cooperate with the V-shaped roller bracket (806).

10. A steel bar sawing and threading integrated machine according to claim 2, characterized in that: The limiting plate (807) and the movable slide (801) are fixed together by screws, and the support arm (802) has a cavity inside that engages with the first cylinder (803).

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