A precision welding fixture for positioning reinforcing bars

Abstract

This utility model discloses a precision welding fixture for positioning rebar, including a support base, an operating frame fixedly mounted on the top of the support base, symmetrical adjustment components on the top of the operating frame's base plate, and a welding component positioned in the center of the bottom of the operating frame's top plate. This welding fixture adjusts the angle of the rebar to be welded, activating a motor to rotate the rotating shaft, which in turn rotates the support rod. The angle can be easily adjusted using scale lines and a pointer. The corresponding rebar is fixed by the clamping component, ensuring the connection point of the two rebars is located in the center of the welding component, making welding more convenient. This solves the problems of existing technologies where, when positioning rebar for welding, complex nodes (such as L-shapes or other angles) require multiple adjustments, leading to a high risk of welding deformation; reliance on manual positioning results in poor accuracy, low efficiency, and a tendency for misalignment; and existing fixtures are mostly designed for single-diameter rebars, lacking versatility.

Description

Technical Field

[0001] This utility model relates to the field of steel bar welding technology in building construction, and in particular to a steel bar positioning and welding clamp. Background Technology

[0002] Rebar welding involves using electric welding equipment to extend or cross-connect rebars axially. Existing methods require multiple adjustments for complex joints (such as L-shapes or other angles) during welding positioning, leading to a high risk of welding deformation. Secondly, a single clamp is often only suitable for specific specifications or types of rebars; different clamps are needed for rebars of different diameters and arrangements, increasing construction costs and operational complexity. Thirdly, some clamps are complex in structure and cumbersome to operate, requiring significant manpower and time for installation and debugging, reducing construction efficiency. Furthermore, existing clamps may cause rebar displacement during welding due to insecure clamping, resulting in weld cracking and unstable welding quality. Utility Model Content

[0003] This utility model discloses a precision welding fixture for positioning reinforcing bars, aiming to solve the technical problems of existing fixtures for welding and positioning reinforcing bars. These problems include the need for multiple adjustments at complex nodes (such as L-shapes or other angles), resulting in a high risk of welding deformation; reliance on manual positioning, leading to poor accuracy, low efficiency, and easy misalignment; and the fact that existing fixtures are mostly designed for reinforcing bars of a single diameter, resulting in poor versatility.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A precision welding fixture for positioning rebar includes a support base. An operating frame is fixedly mounted on the top of the support base. Adjustment components are symmetrically arranged on the top of the bottom plate of the operating frame. A welding component is arranged in the middle of the bottom of the top plate of the operating frame. The adjustment components include mounting slots, which are symmetrically opened on both sides of the top of the support base. A motor is fixedly mounted at the bottom of each mounting slot. A rotating shaft is fixedly mounted at the output end of each motor. Support rods are symmetrically rotatably connected to the top of the bottom of the operating frame. Fixed discs are symmetrically fixedly mounted on the top of the bottom plate of the operating frame and outside the support rods. The top of each rotating shaft passes through the bottom plate of the operating frame and is fixedly connected to the support rod. Each fixed disc has a scale line on its top. A pointer is fixedly mounted on one side of each support rod near the scale line. A positioning seat is fixedly mounted on the top of each support rod. A clamping component is arranged on the top of each positioning seat.

[0006] During use, the angle of the rebar to be welded is used to start the No. 1 motor to drive the rotating shaft, which in turn drives the support rod to rotate. The angle can be easily adjusted using scale lines and pointers. The corresponding rebar is then fixed by the clamping assembly, ensuring that the connection point of the two rebars is located in the middle of the welding assembly, making welding more convenient. This solves the problems of existing rebar positioning methods, which require multiple adjustments for complex nodes (such as L-shapes or other angles), resulting in a high risk of welding deformation; reliance on manual positioning, leading to poor accuracy, low efficiency, and a tendency for misalignment; and the fact that existing clamps are mostly designed for rebars of a single diameter, resulting in poor versatility.

[0007] In a preferred embodiment, the clamping assembly includes sliding grooves. Sliding grooves are symmetrically and equidistantly formed on the tops of both positioning seats. Sliding blocks are slidably connected inside each sliding groove. A bidirectional lead screw is rotatably connected inside the middle sliding groove on the tops of the two positioning seats. The bidirectional lead screw passes through corresponding sliding blocks on both sides and is threadedly connected to the sliding blocks. A second motor is connected to the outer side of the positioning seat and near the bidirectional lead screw via a fixing frame. The output end of the second motor is fixedly connected to the bidirectional lead screw. Clamping plates are fixedly installed on the tops of the sliding blocks on the same side.

[0008] By setting up a clamping assembly, the reinforcing bar is placed between two corresponding clamping plates. The output end of the No. 2 motor rotates, driving the bidirectional lead screw to rotate. The sliding block then moves the clamping plate toward the reinforcing bar, clamping and fixing it more firmly.

[0009] In a preferred embodiment, the welding assembly includes a fixing ring, which is fixedly installed at the bottom of the top plate of the operating frame. A through groove is formed inside the fixing ring. An mounting ring is fixedly installed on one side of the fixing ring. A fixing ring is fixedly installed on the side of the mounting ring closest to the fixing ring. A movable groove is provided between the fixing ring and the fixing ring. A gear ring is fixedly installed on the side of the fixing ring away from the mounting ring. A limit ring is formed inside the fixing ring and near the through groove. A limit rod is movably connected inside the limit ring. A power supply box is fixedly installed at one end of the limit rod. A rotating rod is rotatably connected to the end of the power supply box away from the limit rod. A drive gear is fixedly installed on the outer side of the rotating rod, meshing with the gear ring. An annular groove is formed inside the mounting ring. A No. 3 motor is installed inside the annular groove. The rotating rod extends through the movable groove into the annular groove and is fixedly connected to the output end of the No. 3 motor. An electric telescopic rod is fixedly installed at the bottom of the power supply box. A welding machine is fixedly installed at the output end of the electric telescopic rod.

[0010] By setting up a welding assembly, after the two steel bars are fixed by adjusting the assembly, the output end of motor No. 3 rotates, driving the rotating rod to rotate, which in turn drives the drive gear to rotate. Then, through the gear ring, the drive gear makes a circular motion around the center of the gear ring. The electric telescopic rod and welding machine facilitate multi-angle welding of the steel bars, making the welding more solid and saving time and effort.

[0011] In a preferred embodiment, the support base has a water storage chamber inside, the bottom plate of the operating frame has a drainage groove between the two fixed plates, the top of the support base has a water inlet groove near the drainage groove, a spray pipe is fixedly installed through one side of the middle of the back plate of the operating frame, and one side of the support base is connected to a water outlet pipe through a water pump. One end of the water outlet pipe extends through the water storage chamber, and the water pump and the spray pipe are connected by a hose.

[0012] After welding is completed, a water pump, water outlet pipe, and hose are installed to guide the liquid inside the water storage chamber to the spray pipe, and spray the weld area and the top of the operating frame base plate for cleaning.

[0013] In a preferred embodiment, a drainage groove is provided in the middle of the bottom of the fixing ring, and a baffle is fixedly installed on the outer side of the top of the operating frame base plate.

[0014] The addition of a drain trough allows the sprayed liquid to flow back into the water storage chamber during the spraying process at the weld joint, while the baffle prevents the sprayed liquid from overflowing from the top of the operating frame base plate.

[0015] In a preferred embodiment, a fixing rod is fixedly installed on the top of the positioning seat and inside the sliding grooves on both sides. The fixing rod passes through the sliding block on both sides and is slidably connected to the sliding block. A damping rod is fixedly installed at equal intervals on the top of the positioning seat through a connecting seat. A support plate is connected to the top of the damping rod. A spring is sleeved on the outside of the damping rod. The two ends of the spring are fixedly connected to the support plate and the connecting seat on the top of the positioning seat, respectively.

[0016] By setting a fixed rod, the stability of the sliding block driving the clamping plate to move is enhanced. The combination of the damping rod, support plate and spring is beneficial for supporting the bottom of the steel bar to be welded.

[0017] The precision welding fixture for rebar positioning provided by this utility model has the following advantages:

[0018] This utility model, in use, activates a motor to rotate a shaft by adjusting the angle of the steel bar to be welded, which in turn rotates a support rod. The angle can be easily adjusted using scale lines and a pointer. The corresponding steel bar is then fixed in place by a clamping assembly, ensuring the connection point of the two steel bars is located in the middle of the welding assembly, making welding more convenient. It solves the problems of existing steel bar welding positioning methods, which require multiple adjustments for complex nodes (such as L-shapes or other angles), leading to a high risk of welding deformation; reliance on manual positioning, resulting in poor accuracy, low efficiency, and a tendency for misalignment; and the fact that existing clamps are mostly designed for single-diameter steel bars, lacking versatility. Attached Figure Description

[0019] Figure 1 This is a right-side perspective view of a precision welding fixture for positioning reinforcing bars proposed in this utility model.

[0020] Figure 2 This is a right-side perspective sectional view of a precision welding fixture for positioning reinforcing bars proposed in this utility model.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0023] In the attached diagram: 1. Support base; 11. Water storage chamber; 12. Drainage trough; 13. Water inlet trough; 14. Spray pipe; 15. Water pump; 16. Water outlet pipe; 2. Operating frame; 21. Baffle; 3. Adjustment assembly; 31. Mounting slot; 32. Motor No. 1; 33. Rotating shaft; 34. Fixed plate; 35. Support rod; 36. Scale line; 37. Pointer; 38. Positioning seat; 39. Clamping assembly; 391. Sliding groove; 392. Bidirectional lead screw; 393. Sliding block; 394. Clamping plate; 395. Fixed... 396. Fixed frame; 397. Motor No. 2; 398. Fixed rod; 399. Damping rod; 390. Support plate; 3910. Spring; 4. Welding assembly; 41. Fixed ring; 42. Through groove; 43. Mounting ring; 44. Power supply box; 45. Electric telescopic rod; 46. Welding machine; 47. Rotating rod; 48. Drive gear; 49. Fixed ring; 410. Gear ring; 411. Limiting ring; 412. Limiting rod; 413. Annular groove; 414. Movable groove; 415. Motor No. 3; 416. Drainage groove. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] This utility model discloses a precision welding fixture for positioning reinforcing bars.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A precision welding fixture for positioning rebar includes: a support base 1, an operating frame 2 fixedly mounted on the top of the support base 1, an adjustment component 3 symmetrically arranged on the top of the bottom plate of the operating frame 2, and a welding component 4 arranged in the middle of the bottom of the top plate of the operating frame 2. The adjustment component 3 includes a mounting groove 31, which is symmetrically opened on both sides of the top of the support base 1. A motor 32 is fixedly mounted inside the bottom of each mounting groove 31. A rotating shaft 33 is fixedly mounted on the output end of each motor 32. Support rods 35 are symmetrically rotatably connected to the top and bottom of the operating frame 2. Fixed plates 34 are symmetrically fixedly mounted on the top of the bottom plate of the operating frame 2 and outside the support rods 35. The top of each rotating shaft 33 passes through the bottom plate of the operating frame 2 and is fixedly connected to the support rods 35. A scale line 36 is provided on the top of each fixed plate 34. A pointer 37 is fixedly mounted on one side of the support rod 35 and near the scale line 36. A positioning seat 38 is fixedly mounted on the top of each support rod 35. A clamping component 39 is provided on the top of each positioning seat 38.

[0027] In this embodiment, the angle of the steel bar to be welded is used to start motor 32, which drives the rotating shaft 33 to rotate, and further drives the support rod 35 to rotate. The scale line 36 and pointer 37 facilitate the adjustment of the required angle. The corresponding steel bar is fixed by the clamping component 39, so that the connection between the two steel bars is located in the middle of the welding component 4, making welding more convenient. This solves the problems of existing steel bar welding positioning, where complex nodes such as L-shapes or other angles require multiple adjustments, resulting in a high risk of welding deformation; and the reliance on manual positioning, which is inaccurate, inefficient, and prone to misalignment, leading to low work efficiency. In addition, existing clamps are mostly designed for steel bars of a single diameter, resulting in poor versatility.

[0028] The clamping assembly 39 includes a sliding groove 391. The tops of the two positioning seats 38 are symmetrically and equidistantly provided with sliding grooves 391. Sliding blocks 393 are slidably connected inside each sliding groove 391. A bidirectional lead screw 392 is rotatably connected inside the sliding groove 391 located in the middle of the tops of the two positioning seats 38. Corresponding sliding blocks 393 pass through both sides of the bidirectional lead screw 392 and are threadedly connected to the sliding blocks 393. A second motor 396 is connected to the outer side of the positioning seat 38 near the bidirectional lead screw 392 via a fixing frame 395. The output end of the second motor 396 is fixedly connected to the bidirectional lead screw 392. Clamping plates 394 are fixedly installed on the tops of the sliding blocks 393 on the same side. By setting up the clamping assembly 39, the reinforcing bar is placed between the two corresponding clamping plates 394. The output end of the second motor 396 rotates, driving the bidirectional lead screw 392 to rotate. Furthermore, the sliding blocks 393 drive the clamping plates 394 to move towards the reinforcing bar, clamping and fixing it more firmly.

[0029] The welding assembly 4 includes a fixing ring 41. The fixing ring 41 is fixedly installed at the bottom of the top plate of the operating frame 2. A through groove 42 is provided inside the fixing ring 41. An mounting ring 43 is fixedly installed on one side of the fixing ring 41. A fixing ring 49 is fixedly installed on the side of the mounting ring 43 closest to the fixing ring 41. A movable groove 414 is provided between the fixing ring 49 and the fixing ring 41. A gear ring 410 is fixedly installed on the side of the fixing ring 49 away from the mounting ring 43. A limit ring 411 is provided inside the fixing ring 41 and on the side closest to the through groove 42. A limit rod 412 is movably connected inside the limit ring 411. A power supply box 44 is fixedly installed at one end of the limit rod 412. A rotating rod 47 is rotatably connected to the end of the power supply box 44 away from the limit rod 412. A drive gear 48 is fixedly installed on the outer side of the rotating rod 47. The drive gear 48 and the gear ring... The 410 meshing connection has an annular groove 413 inside the mounting ring 43. A No. 3 motor 415 is installed inside the annular groove 413. The rotating rod 47 extends through the movable groove 414 into the annular groove 413 and is fixedly connected to the output end of the No. 3 motor 415. An electric telescopic rod 45 is fixedly installed at the bottom of the power box 44. A welding machine 46 is fixedly installed at the output end of the electric telescopic rod 45. By setting the welding assembly 4, after the two steel bars are fixed by the adjusting assembly 3, the output end of the No. 3 motor 415 rotates, driving the rotating rod 47 to rotate, which in turn drives the drive gear 48 to rotate. Then, through the gear ring 410, the drive gear 48 makes a circular motion around the center of the gear ring 410. The electric telescopic rod 45 and the welding machine 46 facilitate multi-angle welding of the steel bars, making the welding more solid and saving time and effort.

[0030] The support base 1 has a water storage chamber 11 inside. The bottom plate of the operating frame 2 has a drainage trough 12 located between the two fixed plates 34. The top of the support base 1 has a water inlet trough 13 near the drainage trough 12. A spray pipe 14 is fixedly installed through one side of the middle of the back plate of the operating frame 2. One side of the support base 1 is connected to a water outlet pipe 16 through a water pump 15. One end of the water outlet pipe 16 extends through the water storage chamber 11. The water pump 15 and the spray pipe 14 are connected by a hose. After welding, the liquid inside the water storage chamber 11 is guided to the spray pipe 14 by the water pump 15, the water outlet pipe 16 and the hose, and sprayed to the weld and the top of the bottom plate of the operating frame 2 for cleaning.

[0031] The fixed ring 41 has a drainage groove 416 in the middle of its bottom, and a baffle 21 is fixedly installed on the outer side of the top of the operating frame 2 base plate. The drainage groove 416 is designed to allow the sprayed liquid to flow back into the water storage chamber 11 when the welding area is sprayed. The baffle 21 is designed to prevent the sprayed liquid from overflowing from the top of the operating frame 2 base plate.

[0032] The positioning seat 38 has a fixed rod 397 fixedly installed on its top and inside the sliding grooves 391 on both sides. The fixed rod 397 passes through the sliding block 393 on both sides and is slidably connected to the sliding block 393. The positioning seat 38 has a damping rod 398 fixedly installed at equal intervals on its top through a connecting seat. The top of the damping rod 398 is connected to a support plate 399. The outside of the damping rod 398 is fitted with a spring 3910. The two ends of the spring 3910 are fixedly connected to the support plate 399 and the connecting seat on the top of the positioning seat 38, respectively. By setting the fixed rod 397, the stability of the sliding block 393 driving the clamping plate 394 to move is enhanced. The combined use of the damping rod 398, the support plate 399 and the spring 3910 is beneficial for supporting the bottom of the steel bar to be welded.

[0033] All electrical devices in this plan are powered by an external power source.

[0034] Working principle: When in use, the angle of the steel bar to be welded is used to start the No. 1 motor 32 to drive the rotating shaft 33 to rotate, which in turn drives the support rod 35 to rotate. The scale line 36 and pointer 37 make it easy to adjust the angle as needed. The corresponding steel bar is fixed by the clamping component 39, so that the connection of the two steel bars is located in the middle of the welding component 4, making welding more convenient.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A precision welding fixture for positioning reinforcing bars, comprising a support base (1), characterized in that, An operating frame (2) is fixedly installed on the top of the support base (1). An adjustment component (3) is symmetrically arranged on the top of the bottom plate of the operating frame (2). A welding component (4) is arranged in the middle of the bottom of the top plate of the operating frame (2). The adjustment component (3) includes a mounting groove (31). The mounting groove (31) is symmetrically opened on both sides of the top of the support base (1). A No. 1 motor (32) is fixedly installed at the bottom of each mounting groove (31). A rotating shaft (33) is fixedly installed at the output end of each No. 1 motor (32). The bottom and top of the operating frame (2) are symmetrically rotatably connected. There is a support rod (35). A fixed plate (34) is symmetrically fixedly installed on the top of the bottom plate of the operating frame (2) and outside the support rod (35). The top of the rotating shaft (33) passes through the bottom plate of the operating frame (2) and is fixedly connected to the support rod (35). The top of the fixed plate (34) is provided with a scale line (36). A pointer (37) is fixedly installed on one side of the support rod (35) and near the scale line (36). A positioning seat (38) is fixedly installed on the top of the support rod (35). A clamping component (39) is provided on the top of the positioning seat (38).

2. The precision welding fixture for positioning reinforcing bars according to claim 1, characterized in that, The clamping assembly (39) includes a sliding groove (391). The tops of the two positioning seats (38) are symmetrically provided with sliding grooves (391) at equal intervals. Sliding blocks (393) are slidably connected inside the sliding grooves (391). A bidirectional lead screw (392) is rotatably connected inside the sliding groove (391) located in the middle of the tops of the two positioning seats (38). The bidirectional lead screw (392) passes through the corresponding sliding blocks (393) on both sides and is threadedly connected to the sliding blocks (393). A second motor (396) is connected to the outer side of the positioning seat (38) and close to the bidirectional lead screw (392) through a fixing frame (395). The output end of the second motor (396) is fixedly connected to the bidirectional lead screw (392). A clamping plate (394) is fixedly installed on the top of the sliding blocks (393) on the same side.

3. The precision welding fixture for positioning reinforcing bars according to claim 1, characterized in that, The welding assembly (4) includes a fixing ring (41). The fixing ring (41) is fixedly installed at the bottom of the top plate of the operating frame (2). A through groove (42) is provided inside the fixing ring (41). An mounting ring (43) is fixedly installed on one side of the fixing ring (41). A fixing ring (49) is fixedly installed on the side of the mounting ring (43) near the fixing ring (41). A movable groove (414) is provided between the fixing ring (49) and the fixing ring (41). A toothed ring (410) is fixedly installed on the side of the fixing ring (49) away from the mounting ring (43). A limiting ring (411) is provided inside the fixing ring (41) and on the side near the through groove (42). A limiting rod (412) is movably connected inside the limiting ring (411). A power supply box (44) is fixedly installed at one end of the power supply box (412). A rotating rod (47) is rotatably connected to the end of the power supply box (44) away from the limiting rod (412). A drive gear (48) is fixedly installed on the outside of the rotating rod (47). The drive gear (48) meshes with the gear ring (410). An annular groove (413) is opened inside the mounting ring (43). A No. 3 motor (415) is installed inside the annular groove (413). The rotating rod (47) extends through the movable groove (414) into the annular groove (413) and is fixedly connected to the output end of the No. 3 motor (415). An electric telescopic rod (45) is fixedly installed at the bottom of the power supply box (44). A welding machine (46) is fixedly installed at the output end of the electric telescopic rod (45).

4. A precision welding fixture for positioning reinforcing bars according to claim 1, characterized in that, The support base (1) has a water storage chamber (11) inside. The bottom plate of the operating frame (2) has a drainage groove (12) between the two fixed plates (34). The top of the support base (1) has a water inlet groove (13) near the drainage groove (12). A spray pipe (14) is fixedly installed through one side of the back plate of the operating frame (2). One side of the support base (1) is connected to a water outlet pipe (16) through a water pump (15). One end of the water outlet pipe (16) extends through the water storage chamber (11). The water pump (15) and the spray pipe (14) are connected by a hose.

5. A precision welding fixture for positioning reinforcing bars according to claim 3, characterized in that, The bottom center of the fixing ring (41) is provided with a drain groove (416), and a baffle (21) is fixedly installed on the outer side of the top of the bottom plate of the operating frame (2).

6. A precision welding fixture for positioning reinforcing bars according to claim 2, characterized in that, A fixing rod (397) is fixedly installed on the top of the positioning seat (38) and inside the sliding grooves (391) on both sides. The fixing rod (397) passes through the sliding block (393) on both sides and is slidably connected to the sliding block (393). A damping rod (398) is fixedly installed at equal intervals on the top of the positioning seat (38) through a connecting seat. A support plate (399) is connected to the top of the damping rod (398). A spring (3910) is sleeved on the outside of the damping rod (398). The two ends of the spring (3910) are fixedly connected to the support plate (399) and the connecting seat on the top of the positioning seat (38), respectively.

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