A reinforcing bar butt welding device

Abstract

A rebar butt welding device includes a welding machine body, a control system, a mounting frame, two sliders, two clamping mechanisms, a drive mechanism, and a pressure sensor. In actual use, the clamping mechanisms on the two sliders are activated to clamp and fix the two rebars to be butt welded. The drive mechanism on the mounting frame is then activated, driving the second slider to move and gradually approach the first slider, causing the two rebars to press together and weld through the welding machine body. The pressure sensor monitors the clamping pressure of the two rebars. When the clamping pressure reaches a preset value, the control system promptly stops the drive mechanism, ensuring that the quality of the butt weld joints of each welded rebar is approximately the same. Furthermore, the entire operation requires no manual clamping or clamping of the rebars, making operation simpler and saving time and effort. In summary, by using this rebar butt welding device, the clamping pressure of the two rebars can be automatically butt welded and controlled.

Description

Technical Field

[0001] This invention relates to the field of steel bar processing technology, specifically to a steel bar butt welding device. Background Technology

[0002] Butt welding refers to the method of placing the workpieces between two clamping devices, aligning their end faces, and heating them at the contact point to perform welding. Butt welding requires that the cross-sectional dimensions and shapes of the workpieces at the contact point be the same or similar to ensure uniform heating of the contact surface. Butt welding has high productivity and is easy to automate, thus gaining widespread application. Rebar butt welding machines are common rebar butt welding devices in our lives. There are many types of butt welding machines. According to the welding method, they can be divided into three types: resistance butt welding, continuous flash butt welding, and preheating flash butt welding. According to the structural form, they can be divided into spring upsetting type, pneumatic upsetting type, and so on.

[0003] Traditional rebar welding machines often encounter problems during use. Taking the UN-150 flash welding machine as an example, in actual use, it is necessary to manually clamp and fix the rebar to be welded. During the tightening stage of the welding process, manual tightening is also required. This is not only cumbersome, time-consuming and labor-intensive, but also makes it impossible to control the tightening pressure during each welding, resulting in inconsistent quality of the rebar joints after welding. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To solve the above problems, the present invention provides a rebar butt welding device that can automatically butt weld and control the clamping pressure of two rebars.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A rebar butt welding device includes a butt welding machine body for welding rebars and a control system for controlling the butt welding machine body, and further includes:

[0009] Mounting bracket, the mounting bracket being located on top of the butt welding machine body and having a first end and a second end that are spaced apart from each other;

[0010] Two sliders are slidably connected to the mounting bracket and are divided into a first slider near the first end of the mounting bracket and a second slider near the second end of the mounting bracket, so that the first slider and the second slider can move closer to or further away from each other;

[0011] Two clamping mechanisms are respectively disposed on the two sliders for clamping and fixing the reinforcing bars;

[0012] A driving mechanism is disposed at the second end of the mounting bracket and drivenly connected to the second slider, so that the second slider can move closer to or further away from the first slider;

[0013] A pressure sensor, located at the first end of the mounting bracket and abutting against the first slider, is used to monitor the clamping pressure when two steel bars are welded together.

[0014] The welding machine body, the clamping mechanism, the driving mechanism, and the pressure sensor are all electrically connected to the control system.

[0015] Preferably, both the first and second ends of the mounting bracket are provided with bosses, the top of the bosses being flush with the bottom of the steel bar placement area in the clamping mechanism, for supporting the suspended portion of the steel bar.

[0016] Preferably, the clamping mechanism includes:

[0017] A fixing base is detachably connected to the slider;

[0018] A placement groove, located on the side of the fixing base, is used to place reinforcing bars, and the cross-section of the placement groove is L-shaped;

[0019] The hydraulic cylinder has a fixed end and a telescopic end that are far apart from each other. The fixed end of the hydraulic cylinder is mounted on the fixed base, and the telescopic end of the hydraulic cylinder is provided with a clamping block and is arranged corresponding to the placement groove for clamping and fixing the reinforcing bar. The hydraulic cylinder is electrically connected to the control system.

[0020] Preferably, the drive mechanism includes:

[0021] A drive assembly, located at the second end of the mounting bracket and electrically connected to the control system;

[0022] A cam link assembly, one end of which is driven and connected to the drive assembly, and the other end of which is rotatably connected to the second slider, so that the drive assembly can drive the second slider to reciprocate on the mounting bracket through the cam link assembly.

[0023] Preferably, the second end of the mounting bracket is provided with a horizontally open through hole, and the drive assembly includes:

[0024] The motor is fixedly connected to the second end of the mounting bracket and electrically connected to the control system;

[0025] A first gear is located in the through hole and is connected to the motor drive, so that the motor can drive the first gear to rotate;

[0026] The second gear is fixedly connected to the cam connecting rod assembly and meshes with the first gear, so that the first gear can drive the second gear to rotate, thereby driving the cam connecting rod assembly to move.

[0027] Preferably, the device further includes a clamping member having a first surface and a second surface that are far apart from each other. The first surface of the clamping member is connected to the first slider, and the second surface abuts against the pressure sensor, for adjusting the distance between the first slider and the second slider.

[0028] Preferably, the area of ​​the first surface of the clamping member is larger than the area of ​​the second surface, which is used to concentrate the pressure generated by the first slider on the pressure sensor.

[0029] Preferably, it further includes a limiting block, which is located on the mounting bracket and corresponding to the first slider, to prevent the first slider from sliding on the mounting bracket.

[0030] Preferably, it also includes a shielding component disposed on the clamping mechanism to prevent sparks generated during butt welding of the reinforcing bars from flying everywhere.

[0031] Preferably, the shading component includes:

[0032] A shield is slidably connected to the top of the clamping mechanism. The sliding direction of the shield is the same as the sliding direction of the slider, and it is used to shield upward-splashing sparks.

[0033] Two flexible shielding curtains are installed at the front and rear ends of the shielding plate, respectively, to block sparks flying in both directions.

[0034] Both the shielding plate and the shielding curtain are made of flame-retardant material.

[0035] (III) Beneficial Effects

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] The rebar butt welding device includes a main body for welding rebars and a control system for controlling the main body. It also includes a mounting frame, two sliders, two clamping mechanisms, a drive mechanism, and a pressure sensor. In actual use, the control system activates the clamping mechanisms on the two sliders, clamping and fixing the two rebars to be butt welded in the two different clamping mechanisms. Then, the control system activates the drive mechanism at the second end of the mounting frame, driving the second slider to move and gradually approach the first slider, causing the two rebars to press together and be welded through the main body of the butt welding machine. During the continuous pressing process of the two rebars together... The second slider indirectly presses against the first slider, which in turn directly presses against the pressure sensor. Therefore, the pressure sensor can monitor the clamping pressure of the two steel bars. When the clamping pressure reaches the preset value, the control system will stop the drive mechanism in time, so that the two steel bars to be welded will no longer be clamped, thereby ensuring that the quality of the butt weld of each steel bar after welding is approximately the same. At the same time, during the entire operation, there is no need for manual clamping and fixing of the steel bars to be welded, nor is there a need for manual clamping operation, making the operation simpler and saving time and effort. In summary, by using this steel bar butt welding device, the clamping pressure of the two steel bars can be automatically butt welded and controlled. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0039] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is shown. Figure 1 ;

[0040] Figure 2 A schematic diagram of the overall structure of an embodiment of the present invention is shown. Figure 2 ;

[0041] Figure 3 A partial structural schematic diagram of an embodiment of the present invention is shown. Figure 1 ;

[0042] Figure 4 A partial structural schematic diagram of an embodiment of the present invention is shown. Figure 2 ;

[0043] Figure 5 A schematic diagram of the clamping mechanism in this invention is shown. Figure 1 ;

[0044] Figure 6 A schematic diagram of the clamping mechanism in this invention is shown. Figure 2 ;

[0045] Figure 7 A schematic diagram of the clamping mechanism in this invention is shown. Figure 3 ;

[0046] Figure 8 A schematic diagram of the steel reinforcement structure in this invention is shown;

[0047] Figure 9 A schematic diagram of the shielding component in this invention is shown. Figure 1 ;

[0048] Figure 10 A schematic diagram of the shielding component in this invention is shown. Figure 2 .

[0049] In the diagram: 1. Welding machine body; 2. Mounting bracket; 3. Slider; 31. First slider; 32. Second slider; 4. Clamping mechanism; 41. Fixed seat; 42. Placement slot; 43. Hydraulic cylinder; 44. Clamping block; 5. Drive mechanism; 51. Drive assembly; 511. Motor; 512. First gear; 513. Second gear; 52. Cam connecting rod assembly; 6. Pressure sensor; 7. Boss; 8. Reinforcing bar; 9. Through hole; 10. Tightening component; 11. Limiting block; 12. Shielding assembly; 121. Shielding plate; 122. Shielding curtain; 13. Through slot; 14. Moving block; 15. Handle. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] See appendix Figure 1 - Appendix Figure 10This invention discloses a rebar butt welding device, which includes a butt welding machine body 1 for welding rebars and a control system for controlling the butt welding machine body. It also includes a mounting frame 2, two sliders 3, two clamping mechanisms 4, a drive mechanism 5, and a pressure sensor 6. The mounting frame 2 is located on top of the butt welding machine body 1 and has a first end and a second end that are far apart from each other. The two sliders 3 are slidably connected to the mounting frame 1 and are divided into a first slider 31 near the first end of the mounting frame 1 and a second slider 32 near the second end of the mounting frame 1, allowing the first slider 31 and the second slider 32 to move closer or further apart. The two clamping mechanisms 4 are respectively disposed on the two sliders 3 for clamping and fixing the rebars. The drive mechanism 5 is disposed at the second end of the mounting frame 2 and is drivenly connected to the second slider 32, allowing the second slider 32 to move closer or further away from the first slider 31. The pressure sensor 6 is located at the first end of the mounting frame 2 and abuts against the first slider 31, for monitoring the clamping pressure during butt welding of the two rebars. The butt welding machine body 1, the clamping mechanisms 4, the drive mechanism 5, and the pressure sensor 6 are all electrically connected to the control system.

[0052] In practical use, the control system activates the clamping mechanisms 4 on the two sliders 3, thereby clamping and fixing the two steel bars to be butt-welded in the two different clamping mechanisms 4. Then, the control system activates the drive mechanism 5 at the second end of the mounting frame 2, thereby driving the second slider 32 to move and gradually approach the first slider 31, so that the two steel bars are pressed together and welded through the main body 1 of the butt welding machine. During the process of the two steel bars being pressed together, the second slider 32 will indirectly press the first slider 31, and the first slider 31 will directly press the pressure sensor 6. Therefore, the pressure sensor 6 can monitor the pressing pressure of the two steel bars. When the pressing pressure reaches the preset value, the control system will stop the drive mechanism 5 in time, so that the two steel bars to be welded will no longer be pressed together, thereby ensuring that the quality of the butt weld joint of each steel bar after welding is approximately the same. At the same time, during the entire operation, there is no need for manual clamping and fixing of the steel bars to be welded, nor is there a need for manual pressing operation, making the operation simpler and saving time and effort. In summary, by using this steel bar butt welding device, the pressing pressure of the two steel bars can be automatically butt-welded and controlled.

[0053] The welding machine body 1 and the control system described above both use existing technologies. Specifically, the welding machine body 1 includes components such as a welding transformer, left electrode, right electrode, AC contactor, and relay. Their specific structure, connection method, and working principle are common knowledge to those skilled in the art. Control systems are also diverse, so they will not be described in detail here.

[0054] There are various models of pressure sensor 6, but during the process of sealing the gap between the two steel bars and upsetting, the pressure should be 30 to 40 MPa according to the cross-sectional area of ​​the steel bars. Since 1 MPa equals 10 kg, at least a pressure sensor 6 with a range of more than 400 kg is required. Therefore, in this embodiment, the pressure sensor 6 can be a Spatialo SBT673 high-precision automated pressure sensor with a range of 500 kg. Of course, there are many other models of pressure sensor 6 that can be used in this invention, which will not be listed here.

[0055] See appendix Figure 1 Appendix Figure 3 and attached Figure 4 In traditional rebar welding devices, the rebar 8 often warps at one end after clamping, affecting the stability of the entire rebar 8. This invention also suffers from this problem. Because the clamping mechanism 4 itself has a certain thickness, after the rebar 8 is placed, the end of the rebar 8 closest to the clamping mechanism 4 warps, affecting clamping. After clamping, the end of the rebar 8 furthest from the clamping mechanism 4 warps, affecting the stability of the rebar 8. To solve this problem, this embodiment incorporates the following design: specifically, both the first and second ends of the mounting frame 2 are provided with protrusions 7. The top of the protrusions 7 is flush with the bottom of the rebar 8 placement area in the clamping mechanism 4, used to support the suspended portion of the rebar 8. Through this structural design, the rebar 8 remains horizontal after placement, facilitating clamping. Simultaneously, after clamping, its suspended portion is supported by the protrusions 7, making it more stable.

[0056] See appendix Figure 1 and attached Figure 5 - Appendix Figure 7 There are various structures capable of clamping reinforcing bars. Based on the above scheme, this embodiment introduces one structure that can automatically clamp and fix reinforcing bars. Specifically, the clamping mechanism 4 includes a fixed seat 41, a placement groove 42, and a hydraulic cylinder 43. The fixed seat 41 is detachably connected to the slider 3. The placement groove 42 is located on the side of the fixed seat 41 and is used to place the reinforcing bar 8. The cross-section of the placement groove 42 is L-shaped. The hydraulic cylinder 43 has a fixed end and a telescopic end that are far apart from each other. The fixed end of the hydraulic cylinder 43 is installed on the fixed seat 41, and the telescopic end of the hydraulic cylinder 43 is provided with a pressing block 44 and is set corresponding to the placement groove 42 for pressing and fixing the reinforcing bar 8. The hydraulic cylinder 43 is electrically connected to the control system. Through the design of the above structure, the reinforcing bar 8 can be placed in the placement groove 42 on the side of the fixed seat 41. Then, the hydraulic cylinder 43 is started, so that the pressing block 44 presses down to fix the reinforcing bar. After that, the reinforcing bar can be butt-welded. After the butt-welding is completed, the hydraulic cylinder 43 is started again, so that the pressing block 44 is lifted up. Then, the welded reinforcing bar can be taken out.

[0057] Furthermore, the placement groove 42 is L-shaped, rotating 90° clockwise when viewed from left to right, which facilitates the placement and removal of reinforcing bars. In addition, the contact surfaces of the placement groove 42, the clamping block 44, and the reinforcing bar 8 can be designed as arc-shaped, V-shaped, or other structures, which is more conducive to clamping and fixing the reinforcing bar. Buffer pads can also be set on the contact surfaces of the placement groove 42, the clamping block 44, and the reinforcing bar 8, which can not only prevent damage at the contact points but also increase friction, preventing the reinforcing bar from sliding or rotating after fixing. Guide posts can also be set on the clamping block 44, and corresponding guide holes can be set on the fixing seat 41, making the clamping block 44 more stable during movement.

[0058] See appendix Figure 1 Appendix Figure 3 and attached Figure 4 In order to enable the drive mechanism 5 to drive the second slider 32 to reciprocate, the structure of this embodiment is designed as follows: Specifically, the drive mechanism 5 includes a drive component 51 and a cam link assembly 52. ​​The drive component 51 is located at the second end of the mounting frame 2 and is electrically connected to the control system. One end of the cam link assembly 52 is driven and connected to the drive component 51, and the other end is rotatably connected to the second slider 32, so that the drive component 51 can drive the second slider 32 to reciprocate on the mounting frame 2 through the cam link assembly 52. ​​Through the above structural design, the drive mechanism 5 can provide power to drive the cam link assembly 52 to move, and finally achieve the purpose of reciprocating the second slider 32. This allows the second slider 32 to either approach the first slider 31 to complete the tightening stage during steel bar welding, or move away from the first slider 32 to reset and prepare for the next welding.

[0059] The reinforcing bar 8 has a certain length. To prevent the drive assembly 51 from obstructing the placement of the reinforcing bar 8, its structure is designed as follows in this embodiment: Specifically, the second end of the mounting bracket 2 is provided with a horizontally open through hole 9. The drive assembly 51 includes a motor 511, a first gear 512, and a second gear 513. The motor 511 is fixedly connected to the second end of the mounting bracket 2 and electrically connected to the control system; the first gear 512 is located in the through hole 9 and is driven by the motor 511, so that the motor 511 can drive the first gear 512 to rotate; the second gear 513 is fixedly connected to the cam connecting rod assembly 52 and meshes with the first gear 513. A gear 512 enables the first gear 511 to drive the second gear 512 to rotate, thereby driving the cam connecting rod assembly 52 to move. Through the design of the above structure, the motor 511 is prevented from facing the placement slot 42, so that the motor 511 will not affect the placement of the steel bar 8, and the length of the steel bar 8 will not affect the butt welding operation. In use, the motor 511 is started, so that the first gear 512 drives the second gear 513 meshing with it to rotate, thereby causing the cam connecting rod assembly 52 to rotate. After the clamping and butt welding are completed, the motor 511 is rotated in the opposite direction to reset the second slider 32.

[0060] See appendix Figure 4 During the manufacturing process, the dimensions of various components often have errors. In order to more accurately control the distance between the first slider 31 and the second slider 32, the following design is made in this embodiment. Specifically, it also includes a clamping member 10. The clamping member 10 has a first surface and a second surface that are far apart from each other. The first surface of the clamping member 10 is connected to the first slider 31, and the second surface abuts against the pressure sensor 6, which is used to adjust the distance between the first slider 31 and the second slider 32. Through the above structural design, the various components can be more compact and stable, and it is also convenient to control the exposed length of the welded end of the steel bar.

[0061] The area of ​​the pressure sensor 6 is relatively small compared to the first slider 31. If the first slider 31 is directly pressed against the pressure sensor 6, although the pressure can still be measured, the response may not be fast enough. At the same time, the force per unit area on the contact surface between the first slider 31 and the pressure sensor 6 is greater, making it prone to deformation and damage. To solve the above problems, the following design is made in this embodiment: Specifically, the area of ​​the first surface of the clamping member 10 is larger than the area of ​​the second surface, which is used to concentrate the pressure generated by the first slider 31 on the pressure sensor 6. Through the above structural design, the force per unit area on the first slider 31 can be reduced, thereby extending its service life.

[0062] Furthermore, the clamping member 10 can be configured as a Y-shape.

[0063] See appendix Figure 3 Since the first slider 31 can slide back and forth on the mounting bracket 2, the rebar 8 may move back and forth during the picking, placing, and clamping process, which will affect a series of operations involving the rebar 8. In order to solve the above problem, the following solution is made in this embodiment. Specifically, it also includes a limiting block 11, which is located on the mounting bracket 2 and is set corresponding to the first slider 31 to prevent the first slider 31 from sliding on the mounting bracket 2. Through the above structural solution, the first slider 31 can be restricted between the limiting block 11 and the pressure sensor 6, so that it will not move back and forth. At the same time, the first slider 31 is not fixed on the mounting bracket 2. Therefore, the pressure received by the first slider 31 can still be transmitted to the pressure sensor 6, which will not affect the operation of the pressure sensor 6.

[0064] See appendix Figure 1 Appendix Figure 9 and attached Figure 10 When steel bars are welded, a large number of sparks are generated. These sparks fly everywhere, which not only pollute the environment but also easily injure workers. In order to solve the above problems, this embodiment includes the following: Specifically, it also includes a shielding component 12, which is disposed on the clamping mechanism 4 to prevent the sparks generated when the steel bars 8 are welded from flying everywhere.

[0065] There are various structures that can provide a shielding effect, and the setting method can be flexibly adjusted. This embodiment introduces one such structure. Specifically, the shielding component 12 includes a shielding plate 121 and two flexible shielding curtains 122. The shielding plate 121 is slidably connected to the top of the clamping mechanism 4, and the sliding direction of the shielding plate 121 is consistent with the sliding direction of the slider 3, used to shield upward-splashing sparks. The two shielding curtains 122 are respectively installed at the front and rear ends of the shielding plate 121, used to shield sparks splashing in the front and rear directions. Both the shielding plate 121 and the shielding curtains 122 are made of flame-retardant material. Through the design of the above structure, the shielding plate 121 can move according to the distance between the two clamping mechanisms 4, thereby sealing the opening formed at the top of the two clamping mechanisms 4. The shielding curtains 122 can seal the openings formed at the front and rear ends of the two clamping mechanisms 4, thereby completing the shielding of splashing sparks. In addition, since the shielding curtains 122 are made of flexible material, the shielding component 12 does not need to be removed during the handling of the reinforcing bars, which is more convenient.

[0066] Furthermore, a T-shaped through slot 13 can be provided on the top of the clamping mechanism 4, and a moving block 14 corresponding to the through slot can be provided on the baffle plate 121. With this structural design, it is not only easy to disassemble and assemble the baffle component 12, but the baffle component 12 on one clamping mechanism 4 can also be seamlessly connected to another clamping mechanism 4, thereby completing the sealing of the top openings of the two clamping mechanisms 4 and achieving a better sealing effect. In addition, the baffle curtain 122 can be set at the positions corresponding to the front and rear ends of the clamping mechanism 4 for a better baffle effect.

[0067] Furthermore, a handle 15 can be provided on the top of the cover 121 for easy movement and retrieval.

[0068] Furthermore, the shield 121 can be made of silicate board, and the shield curtain 122 can be made of aramid flame-retardant fabric.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcing bar butt welding apparatus comprising a welding machine main body for welding reinforcing bars and a control system for controlling the welding machine main body, characterized in that, Also includes: Mounting bracket, the mounting bracket being located on top of the butt welding machine body and having a first end and a second end that are spaced apart from each other; Two sliders are slidably connected to the mounting bracket and are divided into a first slider near the first end of the mounting bracket and a second slider near the second end of the mounting bracket, so that the first slider and the second slider can move closer to or further away from each other; Two clamping mechanisms are respectively disposed on the two sliders for clamping and fixing the reinforcing bars; A driving mechanism is disposed at the second end of the mounting bracket and drivenly connected to the second slider, so that the second slider can move closer to or further away from the first slider; A pressure sensor, located at the first end of the mounting bracket and abutting against the first slider, is used to monitor the clamping pressure when two steel bars are welded together. The welding machine body, the clamping mechanism, the driving mechanism, and the pressure sensor are all electrically connected to the control system. It also includes a clamping member having a first surface and a second surface that are far apart from each other. The first surface of the clamping member is connected to the first slider, and the second surface abuts against the pressure sensor, for adjusting the distance between the first slider and the second slider. The area of ​​the first surface of the clamping member is larger than the area of ​​the second surface, which is used to concentrate the pressure generated by the first slider on the pressure sensor. It also includes a limiting block, which is located on the mounting bracket and is configured to correspond to the first slider, so as to prevent the first slider from sliding on the mounting bracket.

2. A reinforcing bar butt welding apparatus according to claim 1, wherein Both the first and second ends of the mounting bracket are provided with protrusions. The top of the protrusions is flush with the bottom of the steel bar placement area in the clamping mechanism, and is used to support the suspended part of the steel bar.

3. A reinforcing bar butt welding apparatus as claimed in claim 1, wherein The clamping mechanism includes: A fixing base is detachably connected to the slider; A placement groove, located on the side of the fixing base, is used to place reinforcing bars, and the cross-section of the placement groove is L-shaped; The hydraulic cylinder has a fixed end and a telescopic end that are far apart from each other. The fixed end of the hydraulic cylinder is mounted on the fixed base, and the telescopic end of the hydraulic cylinder is provided with a clamping block and is arranged corresponding to the placement groove for clamping and fixing the reinforcing bar. The hydraulic cylinder is electrically connected to the control system.

4. A reinforcing bar butt welding apparatus according to claim 1, wherein The drive mechanism includes: A drive assembly, located at the second end of the mounting bracket and electrically connected to the control system; A cam link assembly, one end of which is driven and connected to the drive assembly, and the other end of which is rotatably connected to the second slider, so that the drive assembly can drive the second slider to reciprocate on the mounting bracket through the cam link assembly.

5. A reinforcing bar butt welding apparatus as claimed in claim 4 wherein, The second end of the mounting bracket is provided with a horizontally open through hole, and the drive assembly includes: The motor is fixedly connected to the second end of the mounting bracket and electrically connected to the control system; A first gear is located in the through hole and is connected to the motor drive, so that the motor can drive the first gear to rotate; The second gear is fixedly connected to the cam connecting rod assembly and meshes with the first gear, so that the first gear can drive the second gear to rotate, thereby driving the cam connecting rod assembly to move.

6. A reinforcing bar butt welding apparatus according to any one of claims 1 to 5, wherein It also includes a shielding component disposed on the clamping mechanism to prevent sparks generated during butt welding of the reinforcing bars from flying everywhere.

7. A rebar butt welding device according to claim 6, characterized in that, The shading component includes: A shield is slidably connected to the top of the clamping mechanism. The sliding direction of the shield is the same as the sliding direction of the slider, and it is used to shield upward-splashing sparks. Two flexible shielding curtains are installed at the front and rear ends of the shielding plate, respectively, to block sparks flying in both directions. Both the shielding plate and the shielding curtain are made of flame-retardant material.

Images