CN221791508U - Welding fixture - Google Patents

Abstract

The utility model discloses a welding fixture, including a welding fixture main frame and a clamping base, a movable frame is arranged above the outside of the welding fixture main frame, rotating disks are arranged on both sides of the inside of the movable frame, clamping bases are arranged on both sides of the inside of the welding fixture main frame, a servo motor is arranged at the bottom of the inside of the clamping base, and the output end of the servo motor is connected to a coaxial gear. The hydraulic cylinder arranged in the utility model can push the movable frame to move, and since the movable frame is fixedly connected to a fixed rack, and the fixed rack is meshed with a synchronous gear, the movable frame can be synchronously moved with the fixed rack, and the fixed rack can push the synchronous gear to rotate, and since the synchronous gear, the rotating disk and the fixed shaft are fixedly connected to the clamping base, the synchronous gear, the rotating disk and the fixed shaft can be synchronously rotated with the clamping base, the rotation angle of the clamping base can be changed, and the rotation angle of the front wing plate to be welded can be synchronously changed, and the front wing plate to be welded can be adjusted to a suitable position to adapt to welding of different parts.

Description

A welding fixture

Technical Field

The utility model relates to the technical field of clamps, in particular to a welding clamp.

Background Art

When a car is produced, it is divided into modular parts for production. After the production of each part is completed, it is assembled and welded. For example, the front fender of a car requires the assistance of a welding fixture for welding.

After searching, in a manual welding fixture table for automobile welding fixture with announcement number CN218575387U, the utility model discloses a manual welding fixture table for automobile welding fixture, including a fixed frame, a rotating mechanism, a locking mechanism and a smoke removal mechanism, wherein a top frame is installed at the upper end of the outer wall of the fixed frame, and a motor is installed at the upper end of the inner wall of the fixed frame, the rotating mechanism is installed at the top end of the outer wall of the fixed frame, the locking mechanism is fixed on the rotating mechanism, and the smoke removal mechanism is installed at the top end of the inner wall of the top frame. The manual welding fixture table for automobile welding fixture, through the setting of the rotating mechanism, such a setting can drive the rotating shaft to rotate under the drive of the motor, so that the angle of the processing seat can be adjusted, and the bearing capacity of the processing seat is improved under the auxiliary support of the supporting wheel, the stability is improved, and it is convenient for auxiliary staff to perform welding processing on parts at different positions in sequence, which effectively reduces the labor burden of the staff and improves the working efficiency of the device. The welding fixture has the following problems:

The manual welding fixture used in general welding fixtures uses a hand wheel to drive a screw to push two sets of locking blocks to clamp the automobile welding workpiece, which is used to limit the position of the automobile welding workpiece. The welding head often welds one side of the welding workpiece. When welding the other side of the welding workpiece, the welding workpiece needs to be turned over and re-clamped, which will reduce the efficiency of welding the workpiece. To this end, we propose a welding fixture.

Utility Model Content

The purpose of the utility model is to provide a welding fixture to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding fixture, comprising a welding fixture main frame and a clamping base, characterized in that: a movable frame is arranged above the outside of the welding fixture main frame, rotating disks are arranged on both sides of the movable frame, a clamping base is arranged on both sides of the inside of the welding fixture main frame, a servo motor is arranged at the bottom of the clamping base, the output end of the servo motor is connected to a coaxial gear, a driven gear is arranged on one side of the coaxial gear, a bidirectional screw rod is connected to the output end of the driven gear, screw rod sliders are sleeved on both sides of the bidirectional screw rod, an adjusting support rod is arranged on one side of the screw rod slider, one end of the adjusting support rod is movably pin-connected to the screw rod slider, and the other end is connected to a movable sleeve block, a guide slide rod is passed through the inside of the movable sleeve block, and a clamping plate is connected to one side of the movable sleeve block.

Preferably, the servo motor is meshed with a bidirectional lead screw through a coaxial gear and a driven gear, the two parts of the bidirectional lead screw have opposite threads, the bidirectional lead screw passes through the interior of a lead screw slider, the lead screw slider is movably connected to a movable sleeve block through an adjusting support rod, the movable sleeve block is movably pin-connected to the adjusting support rod, the guide slide rod passes through the interior of the movable sleeve block, and the movable sleeve block is fixedly connected to the clamping plate.

Preferably, hydraulic cylinders are connected to both sides of the top of the movable frame, fixed racks are connected to both sides of the movable frame, a synchronous gear is provided at the front end of the fixed rack, a rotating disk is connected to the output end of the synchronous gear, and a fixed shaft is connected to the output end of the rotating disk.

Preferably, the movable frame is fixedly connected to the hydraulic cylinder, the movable frame is fixedly connected to the fixed rack, the fixed rack is meshed with the synchronous gear, and the synchronous gear, the rotating disk and the fixed shaft are fixedly connected to the clamping base.

Preferably, annular limiting ring grooves are provided on both sides of the outer wall of the main frame of the welding fixture, and limiting rings are provided inside the limiting ring grooves.

Preferably, the limiting ring is matched with the limiting ring groove, and the limiting ring is fixedly connected to the rotating disk.

Compared with the prior art, the beneficial effects of the utility model are:

The servo motor provided in the utility model drives the driven gear and the bidirectional lead screw to rotate synchronously through the coaxial gear, so that the bidirectional lead screw drives the lead screw sliders on both sides to move. Since the threads of the bidirectional lead screw parts corresponding to the two lead screw sliders are opposite, the bidirectional lead screw can push the two lead screw sliders closer to each other. Since the lead screw slider is movably connected with the movable sleeve block through the adjusting support rod, the lead screw slider pulls the movable sleeve block and the clamping plate closer to each other along the central axis direction of the guide slide rod through the adjusting support rod, so that the clamping plate clamps the two sides of the front wing plate to be welded, which can be used to limit the position of the front wing plate to be welded.

The hydraulic cylinder provided in the utility model can push the movable frame to move. Since the movable frame is fixedly connected to the fixed rack, and the fixed rack is meshed with the synchronous gear, the movable frame and the fixed rack can be moved synchronously, and the fixed rack can push the synchronous gear to rotate. Since the synchronous gear, the rotating disk and the fixed shaft are fixedly connected to the clamping base, the synchronous gear, the rotating disk and the fixed shaft can be rotated synchronously with the clamping base, the rotation angle of the clamping base can be changed, and the rotation angle of the front wing plate to be welded can be changed synchronously, and the front wing plate to be welded can be adjusted to a suitable position to adapt to welding of different parts.

The limiting ring provided in the utility model rotates synchronously with the rotating disk, the limiting ring can rotate inside the limiting ring groove, and the limiting ring can provide rotating support for the rotating disk.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic diagram of a partially enlarged structure of point A in FIG1 of the present invention.

In the figure: 1. Main frame of welding fixture; 2. Movable frame; 3. Hydraulic cylinder; 4. Fixed rack; 5. Driven gear; 6. Limiting ring; 7. Limiting ring groove; 8. Clamping base; 9. Servo motor; 10. Coaxial gear; 11. Driven gear; 12. Bidirectional lead screw; 13. Lead screw slider; 14. Adjusting support rod; 15. Guide slide rod; 16. Movable sleeve block; 17. Clamping plate; 18. Rotating disk; 19. Fixed shaft.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

As shown in Figures 1 and 2, the utility model provides a technical solution: a welding fixture, including a welding fixture main frame 1 and a clamping base 8, a movable frame 2 is arranged above the outside of the welding fixture main frame 1, and rotating disks 18 are arranged on both sides of the movable frame 2, and clamping bases 8 are arranged on both sides of the inside of the welding fixture main frame 1, and a servo motor 9 is arranged at the bottom of the clamping base 8, and the output end of the servo motor 9 is connected to a coaxial gear 10, and a driven gear 11 is arranged on one side of the coaxial gear 10, and the driven gear The output end of the wheel 11 is connected to a bidirectional screw rod 12, and both sides of the bidirectional screw rod 12 are sleeved with screw sliders 13. An adjusting support rod 14 is arranged on one side of the screw slider 13. One end of the adjusting support rod 14 is movably pinned to the screw slider 13, and the other end is connected to a movable sleeve block 16. A guide slide rod 15 is penetrated inside the movable sleeve block 16, and a clamping plate 17 is connected to one side of the movable sleeve block 16. The servo motor 9 is meshed with the bidirectional screw rod 12 through the coaxial gear 10 and the driven gear 11. The two parts of the bidirectional screw rod 12 are threaded. On the contrary, the bidirectional screw rod 12 passes through the interior of the screw rod slider 13, the screw rod slider 13 is movably connected to the movable sleeve block 16 through the adjusting support rod 14, the movable sleeve block 16 is movably pinned to the adjusting support rod 14, the guide slide rod 15 passes through the interior of the movable sleeve block 16, the movable sleeve block 16 is fixedly connected to the clamping plate 17, the two sides of the front wing plate of corresponding size width are placed between the two clamping plates 17 on both sides, and the servo motor 9 drives the driven gear 11 and the bidirectional screw rod 12 to rotate synchronously through the coaxial gear 10, so that the bidirectional screw rod 12 Push the screw sliders 13 on both sides to move. Since the threads of the two bidirectional screw rods 12 corresponding to the two screw sliders 13 are opposite, the bidirectional screw rods 12 can push the two screw sliders 13 closer to each other. Since the screw sliders 13 are movably connected with the movable sleeve block 16 through the adjusting support rod 14, the screw slider 13 pulls the movable sleeve block 16 and the clamping plate 17 closer to each other along the central axis direction of the guide slide rod 15 through the adjusting support rod 14, so that the clamping plate 17 clamps the two sides of the front wing panel to be welded, which can be used to limit the position of the front wing panel to be welded.

As shown in Figure 1, both sides of the top of the movable frame 2 are connected to hydraulic cylinders 3, both sides of the movable frame 2 are connected to fixed racks 4, a synchronous gear 5 is provided at the front end of the fixed rack 4, the output end of the synchronous gear 5 is connected to a rotating disk 18, the output end of the rotating disk 18 is connected to a fixed shaft 19, the movable frame 2 is fixedly connected to the hydraulic cylinder 3, the movable frame 2 is fixedly connected to the fixed rack 4, the fixed rack 4 is meshed with the synchronous gear 5, the synchronous gear 5, the rotating disk 18 and the fixed shaft 19 are fixedly connected to the clamping base 8, and the hydraulic cylinder 3 can push the movable frame 2 to move. The movable frame 2 is fixedly connected to the fixed rack 4, and the fixed rack 4 is meshed with the synchronous gear 5, so that the movable frame 2 and the fixed rack 4 can be moved synchronously, and the fixed rack 4 can push the synchronous gear 5 to rotate. Since the synchronous gear 5, the rotating disk 18 and the fixed shaft 19 are fixedly connected to the clamping base 8, the synchronous gear 5, the rotating disk 18 and the fixed shaft 19 can be rotated synchronously with the clamping base 8, the rotation angle of the clamping base 8 can be changed, and the rotation angle of the front wing panel to be welded can be changed synchronously, and the front wing panel to be welded can be adjusted to a suitable position to adapt to welding of different parts.

As shown in Figure 1, an annular limiting ring groove 7 is opened on both sides of the outer wall of the welding fixture main frame 1, and a limiting ring 6 is arranged inside the limiting ring groove 7. The limiting ring 6 is adapted to the limiting ring groove 7, and the limiting ring 6 is fixedly connected to the rotating disk 18. The limiting ring 6 and the rotating disk 18 rotate synchronously. The limiting ring 6 can rotate inside the limiting ring groove 7, and the limiting ring 6 can provide rotation support for the rotating disk 18.

Working principle: First, place the two sides of the front wing plate of the corresponding size width between the two clamping plates 17 on both sides. The servo motor 9 drives the driven gear 11 and the bidirectional screw 12 to rotate synchronously through the coaxial gear 10, so that the bidirectional screw 12 drives the screw sliders 13 on both sides to move. Since the threads of the bidirectional screw 12 parts corresponding to the two screw sliders 13 are opposite, the bidirectional screw 12 can push the two screw sliders 13 to approach each other. Since the screw slider 13 is movably connected with the movable sleeve block 16 through the adjusting support rod 14, the screw slider 13 pulls the movable sleeve block 16 and the clamping plate 17 to approach each other along the central axis direction of the guide slide rod 15 through the adjusting support rod 14, so that the clamping plate 17 clamps the two sides of the front wing panel to be welded, which can be used to limit the position of the front wing panel to be welded. Then, the hydraulic cylinder 3 can push the movable frame 2 to move. Since the movable frame 2 is fixedly connected to the fixed rack 4, and the fixed rack 4 is meshed with the synchronous gear 5, the movable frame 2 can be moved synchronously with the fixed rack 4, and the fixed rack 4 can push the synchronous gear 5 to rotate. Since the synchronous gear 5, the rotating disk 18 and the fixed shaft 19 are fixedly connected to the clamping base 8, the synchronous gear 5, the rotating disk 18 and the fixed shaft 19 can be rotated synchronously with the clamping base 8, the rotation angle of the clamping base 8 can be changed, and the front wing panel to be welded can be rotated to a suitable angle to adapt to welding at different positions.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a welding fixture, includes welding fixture body frame (1) and centre gripping base (8), its characterized in that: the welding fixture is characterized in that a movable frame (2) is arranged above the outside of the welding fixture main frame (1), rotating discs (18) are arranged on two sides of the inside of the movable frame (2), clamping bases (8) are arranged on two sides of the inside of the welding fixture main frame (1), a servo motor (9) is arranged at the bottom of the inside of the clamping bases (8), a coaxial gear (10) is connected to the output end of the servo motor (9), a driven gear (11) is arranged on one side of the coaxial gear (10), a bidirectional screw (12) is connected to the output end of the driven gear (11), screw sliding blocks (13) are sleeved on two sides of the bidirectional screw (12), one side of each screw sliding block (13) is provided with an adjusting supporting rod (14), one end of each adjusting supporting rod (14) is movably connected with each screw sliding block (13) in a pin joint mode, the other end of each screw sliding block is connected with a movable sleeve block (16), a guide sliding rod (15) is arranged inside the movable sleeve block (16) in a penetrating mode, and one side of each movable sleeve block (16) is connected to a clamping plate (17).

2. A welding jig according to claim 1, wherein: the servo motor (9) is meshed with the bidirectional screw rod (12) through the coaxial gear (10) and the driven gear (11), threads of two parts of the bidirectional screw rod (12) are opposite, the bidirectional screw rod (12) penetrates through the inside of the screw rod sliding block (13), the screw rod sliding block (13) is movably connected with the movable sleeve block (16) through the adjusting support rod (14), the movable sleeve block (16) is movably connected with the adjusting support rod (14) in a pin joint mode, the guide slide rod (15) penetrates through the inside of the movable sleeve block (16), and the movable sleeve block (16) is fixedly connected with the clamping plate (17).

3. A welding jig according to claim 1, wherein: the hydraulic oil cylinder (3) is connected to two sides of the top of the movable frame (2), the fixed racks (4) are connected to two sides of the movable frame (2), the front ends of the fixed racks (4) are provided with synchronous gears (5), the output ends of the synchronous gears (5) are connected with rotating discs (18), and the output ends of the rotating discs (18) are connected with fixed shafts (19).

4. A welding jig according to claim 3, wherein: the movable frame (2) is fixedly connected with the hydraulic oil cylinder (3), the movable frame (2) is fixedly connected with the fixed rack (4), the fixed rack (4) is meshed with the synchronous gear (5), and the synchronous gear (5), the rotary disk (18) and the fixed shaft (19) are fixedly connected with the clamping base (8).

5. A welding jig according to claim 1, wherein: annular limiting ring grooves (7) are formed in two sides of the outer wall of the main frame (1) of the welding fixture, and limiting rings (6) are arranged in the limiting ring grooves (7).

6. A welding jig according to claim 5, wherein: the limiting ring (6) is matched with the limiting ring groove (7), and the limiting ring (6) is fixedly connected with the rotating disc (18).