CN221560190U

CN221560190U - Beam string laser composite welding clamp structure

Info

Publication number: CN221560190U
Application number: CN202323606715.5U
Authority: CN
Inventors: 范永利; 张效峰; 刘腾; 杨文祥; 赵长志
Original assignee: Carl Cruise Robot Technology China Co ltd
Current assignee: Carl Cruise Robot Technology China Co ltd
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-08-20
Anticipated expiration: 2033-12-28

Abstract

The utility model discloses a string beam laser composite welding fixture structure, which comprises a main beam, a plurality of rotary compressing mechanisms and a plurality of centering positioning mechanisms, wherein the rotary compressing mechanisms and the centering positioning mechanisms are arranged in a staggered manner along the length direction of the main beam, each rotary compressing mechanism comprises a fixed seat, a rotary arm, two compressing mechanisms and a rotary driving device, the fixed seat is fixed on the main beam, the rotary arm is in an arc shape and is arranged on the fixed seat, two ends of the rotary arm are respectively positioned on two sides of the main beam, the rotary driving device is arranged on the fixed seat, and the two compressing mechanisms are respectively arranged at two ends of the rotary arm and compress a workpiece to be welded from the left side or the right side along with the rotation of the rotary arm. According to the utility model, through the rotation of the rotary pressing mechanism, the clamping part of the workpiece can be changed according to the requirement when the workpiece is welded, the workpiece is not required to be loosened after the welding on one side of the workpiece is finished, and the workpiece is clamped in a centering way again, so that the welding efficiency of the workpiece can be effectively improved.

Description

Beam string laser composite welding clamp structure

Technical Field

The utility model relates to a string beam laser composite welding fixture structure, and belongs to the technical field of welding.

Background

The current laser composite welding of the bridge is realized by adopting a special machine, the variety of the bridge is increased along with the diversification of the market, and the technological parameters of the composite welding are also continuously optimized and adjusted. The existing special machine is only applicable to one workpiece, welding process parameters are difficult to adjust, such as welding angles cannot be adjusted, so that the existing special machine is difficult to adapt to market demands of few parts and multiple types, robot welding is adopted, due to the flexibility, welding parameters can be adjusted, the welding machine has the advantages that the existing special machine does not have, the bridge usually needs to be welded on two sides, the clamps of the existing special machine clamp the bridge from one side when the bridge is welded, the clamps clamping the bridge need to be loosened when the bridge is welded on the other side, the bridge needs to be clamped on the other side of the bridge, and welding efficiency of the bridge is difficult to effectively improve due to the fact that the welding on two sides of the bridge is clamped through centering at least twice.

Disclosure of Invention

The utility model aims to provide a string beam laser composite welding fixture structure, which solves the technical defect that in the prior art, welding is carried out on two sides of a string beam, multiple clamping is needed, and the welding efficiency is affected.

In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a string beam laser compound welding anchor clamps structure, including the girder, a plurality of rotatory hold-down mechanism and a plurality of centering positioning mechanism, wherein rotatory hold-down mechanism and centering positioning mechanism set up along the length direction of girder is crisscross, rotatory hold-down mechanism includes the fixing base, the swinging boom, two hold-down mechanisms and rotary drive device, the fixing base is fixed on the girder, the swinging boom is circular-arc, and set up on the fixing base, the both ends of swinging boom are located the both sides of girder respectively, rotary drive device installs on the fixing base for the drive swinging boom is rotatory on the fixing base, two hold-down mechanisms are installed respectively at the both ends of swinging boom, and compress tightly the work piece that waits to weld from left side or right side along with the rotation of swinging boom. The utility model sets up a plurality of rotary hold-down mechanisms, through the rotation of the rotary hold-down mechanism, make hold-down mechanism can clamp the work piece from both sides of the work piece to be welded, before welding, the rotary hold-down mechanism rotates to one side of the work piece, when welding passes a rotary hold-down mechanism, the rotary hold-down mechanism rotates to the other side to clamp the work piece until the side of the work piece is welded, all rotary hold-down mechanisms rotate to one side that has already been welded and clamp the work piece from one side that has already been welded, at this moment, weld the work piece from another side of the work piece again, the work piece position is motionless in the whole process, the welding one side does not need to clamp the work piece again, thus raise the efficiency of welding of both sides of the string beam, the utility model can finish the centering of the work piece automatically, cooperate with the robot, the utility model can realize the automatic welding of the work piece, the rotary hold-down mechanism in the utility model can use only a part of it according to the work piece to be welded, thus make the utility model applicable to the welding of the work piece of different length, the utility model has raised the universality.

As a further improvement of the utility model, a gear ring is arranged on one side of the rotating arm, the rotary driving device is a rotary driving motor, a gear is arranged on an output shaft of the rotary driving motor, and the gear is meshed with the gear ring. According to the utility model, the gear is meshed with the gear ring, and the gear drives the rotating arm to rotate, so that the rotary pressing mechanism can adjust the position of clamping the workpiece according to the requirement.

As a further improvement of the utility model, the fixed seat is provided with an arc-shaped channel which penetrates through the left side and the right side of the fixed seat and is matched with the shape of the rotating arm, the rotating arm is arranged in the arc-shaped channel and rotates in the arc-shaped channel, the left side and the right side of the front end and the rear end of the arc-shaped channel are respectively provided with an upper supporting wheel A and a lower supporting wheel A, wherein the upper supporting wheel A is matched with the inner arc-shaped surface of the rotating arm, and the lower supporting wheel A is matched with the outer arc-shaped surface of the rotating arm for supporting the rotating arm. The supporting wheel A can support and guide the rotation of the rotating arm, and the rotating stability of the rotating arm is effectively improved by matching with the arc-shaped channel on the fixing seat.

As a further improvement of the utility model, the left end and the right end of the fixing seat are respectively provided with a front supporting wheel B and a rear supporting wheel B, and the supporting wheels B are matched with the front side surface and the rear side surface of the rotating arm and are used for axially limiting the rotating arm. The supporting wheel B in the utility model can axially limit the rotating arm, and further improve the rotating stability of the rotating arm.

As a further improvement of the utility model, the compressing mechanism comprises a guide post, a compressing block and a compressing driving device, wherein one end of the guide post is fixedly connected with the compressing block, the guide post is arranged along the radial direction of the rotating arm and is in sliding connection with the rotating arm by adopting a linear bearing, and the compressing driving device is arranged on the rotating arm and is connected with the compressing block and is used for driving the compressing block to move along the radial direction of the rotating arm. According to the utility model, the guide post is matched with the linear bearing to guide the movement of the compaction block, and the workpiece is compacted or loosened in the use state through the movement of the compaction block.

As a further improvement of the utility model, the compressing driving device is an electric cylinder, the number of the guide posts is two, the two guide posts are arranged in parallel, a piston rod of the electric cylinder is positioned between the two guide posts and connected with the compressing block, and the piston rod of the electric cylinder stretches and contracts to drive the compressing block to move. According to the utility model, the two guide posts are arranged, so that the moving stability of the compression block is improved, the electric cylinder is adopted to drive the compression block to move, and the structure is simple and the installation is convenient.

As a further improvement of the present utility model, the centering positioning mechanism includes a centering positioning frame, a screw, a slider provided on the screw, a pushing pin provided on the slider, and a centering positioning drive motor, the screw is rotatably connected with the centering positioning frame, the centering positioning drive motor is connected with the screw for driving the screw to rotate, the slider moves synchronously toward directions approaching or separating from each other along with the rotation of the screw, and when the sliders on the screw approach each other, the pushing pin on the slider pushes the workpiece to be welded toward the middle direction of the two pushing pins. According to the centering positioning device, the screw rod is driven to rotate by the centering positioning driving motor, the sliding block is driven to move by the screw rod, and the pushing pin is driven to move by the movement of the sliding block, so that the workpiece is pushed to the middle, and centering positioning of the workpiece is realized.

As a further improvement of the utility model, the centering and positioning frame is of a hollow box structure, the screw rod is arranged in the centering and positioning frame, the top of the centering and positioning frame is provided with a sliding groove penetrating the inside and the outside of the centering and positioning frame along the left-right direction, the sliding block is arranged in the centering and positioning frame and driven by the screw rod to move along the left-right direction, and the top of the pushing pin penetrates through the sliding groove and synchronously moves along with the movement of the sliding block. The utility model adopts the hollow centering and positioning frame, so that the centering slide block and the screw rod are both positioned in the centering and positioning frame, and the interference to the workpiece is avoided.

As a further improvement of the utility model, the centering and positioning driving motor is arranged at the bottom of the centering and positioning rack and is connected with the screw rod through the speed reducer. The centering positioning driving motor is arranged at the bottom of the centering positioning rack, so that the interference of the centering positioning driving motor on the rotation of the workpiece and the rotary pressing mechanism is avoided.

As a further improvement of the utility model, the push pin is of a telescopic structure for telescopic adjustment according to the height of the work pieces to be welded. The utility model discloses a flexible through pushing away tight round pin can effectually avoid when welding the work piece, pushes away tight round pin and welds the interference that produces.

In summary, the beneficial effects of the utility model are as follows: according to the utility model, through the rotation of the rotary pressing mechanism, the clamping part of the workpiece can be changed according to the requirement when the workpiece is welded, the workpiece is not required to be loosened after the welding on one side of the workpiece is finished, and the workpiece is clamped in a centering way again, so that the welding efficiency of the workpiece can be effectively improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic perspective view of a rotary pressing mechanism according to the present utility model.

Fig. 3 is a schematic perspective view of the centering mechanism in the present utility model.

Wherein: 1. a main beam; 2. a rotary pressing mechanism; 3. centering and positioning mechanism; 4. a fixing seat; 5. a rotating arm; 6. a compressing mechanism; 7. a rotation driving device; 8. a gear ring; 9. a supporting wheel A; 10. a supporting wheel B; 11. a guide post; 12. a compaction block; 13. a compression driving device; 14. a linear bearing; 15. centering and positioning the frame; 16. a slide block; 17. pushing the pin tightly; 18. centering and positioning a driving motor; 19. a sliding groove.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings.

The string Liang Jiguang compound welding fixture structure shown in fig. 1 comprises a main beam 1, a plurality of rotary pressing mechanisms 2 and a plurality of centering positioning mechanisms 3, wherein the main beam 1 is in the prior art, the utility model is not described in detail, the rotary pressing mechanisms 2 and the centering positioning mechanisms 3 are arranged in a staggered manner along the length direction of the main beam 1, namely, one centering positioning mechanism 3 is arranged between two adjacent rotary pressing mechanisms 2, correspondingly, one rotary pressing mechanism 2 is also arranged between every two adjacent centering positioning mechanisms 3, and the utility model uses the length direction of the main beam 1 as the front-back direction and uses the width direction of the main beam 1 as the left-right direction.

As shown in fig. 2, the rotary pressing mechanism 2 in the present utility model includes a fixing base 4, a rotating arm 5, two pressing mechanisms 6 and a rotary driving device 7, the fixing base 4 is detachably mounted at the lower part of the main beam 1 by bolts, the rotating arm 5 is in an arc shape and is slidably disposed on the fixing base 4, two ends of the rotating arm 5 are respectively located at two sides of the main beam 1 and located at two sides of the main beam 1, the rotary driving device 7 is mounted on the fixing base 4 for driving the rotating arm 5 to rotate on the fixing base 4 by taking the center line of the rotating arm 5 as an axis, and the two pressing mechanisms 6 are respectively mounted at two ends of the rotating arm 5 and move upwards or downwards along with the rotation of the rotating arm 5, thereby pressing a workpiece to be welded from the left side or the right side.

As shown in fig. 2, the specific structure of the present utility model for realizing the rotation of the rotary arm 5 on the fixed seat 4 by the rotation driving device 7 is: a gear ring 8 is arranged on one side of the rotating arm 5, the gear ring 8 is a half gear ring, namely the gear ring 8 is a part of a complete gear ring, a rotary driving device 7 adopts a rotary driving motor which is detachably arranged on a fixed seat 4 through bolts, a speed reducer is arranged on the fixed seat 4, an output shaft of the rotary driving motor is connected with an input shaft of the rotary driving motor, a gear is arranged on an output shaft of the speed reducer, the gear is meshed with the gear ring 8, the rotary driving motor drives the gear to rotate, and the gear ring is driven to rotate through the meshing of the gear and the gear ring, so that the whole rotating arm 5 is driven to rotate on the fixed seat 4, and the rotating range of the rotating arm 5 in the utility model is plus or minus 70 degrees. The utility model has the arc-shaped channel penetrating the left and right sides of the fixed seat 4 and matching with the shape of the rotating arm 5, the rotating arm 5 is arranged in the arc-shaped channel and rotates in the arc-shaped channel, the left and right sides of the front and rear ends of the arc-shaped channel are respectively provided with an upper supporting wheel A9 and a lower supporting wheel A9, the rotating shafts of the supporting wheels A9 are fixed on the fixed seat 4, the supporting wheels A9 at the upper side are matched with the inner arc-shaped surface of the rotating arm 5, the supporting wheels A9 at the lower side are matched with the outer arc-shaped surface of the rotating arm 5, and are used for supporting the rotating arm 5 and guiding the rotation of the rotating arm 5; the utility model is provided with the front and rear supporting wheels B10 at the left and right ends of the fixed seat 4 respectively, the supporting wheels B10 are matched with the front and rear side surfaces of the rotating arm 5 and are used for axially limiting the rotating arm 5, and the supporting wheels A9 and the supporting wheels B10 guide the rotation of the rotating arm 5 and axially limit the rotating arm 5, so that the rotating stability of the rotating arm 5 is improved.

As shown in fig. 2, the compressing mechanism 6 in the utility model comprises a guide post 11, a compressing block 12 and a compressing driving device 13, wherein the guide post 11 is in a circular rod shape, one end of the guide post 11 is fixedly connected with the compressing block 12, the guide post 11 is arranged along the radial direction of the rotating arm 5 and is in sliding connection with the rotating arm 5 by adopting a linear bearing 14, and the compressing driving device 13 is arranged on the rotating arm 5 and is connected with the compressing block 12 for driving the compressing block 12 to move along the radial direction of the rotating arm 5. The compression driving device 13 in the utility model preferentially adopts two electric cylinders, wherein the number of the guide posts 11 is two, the two guide posts 11 are arranged in parallel, the piston rods of the electric cylinders are positioned between the two guide posts 11 and are parallel to the guide posts 11, the free ends of the piston rods of the electric cylinders are connected with the compression blocks 12, the piston rods of the electric cylinders are telescopic and used for driving the compression blocks 12 to move, the guide posts 11 guide the movement of the mine compression blocks 12, the stability of the movement of the compression blocks 12 is improved, the stroke of the compression blocks 12 in the utility model is 350mm, and proper electric cylinders can be selected according to the stroke and the proper length of the guide posts 11.

As shown in fig. 3, the centering and positioning mechanism 3 in the utility model comprises a centering and positioning frame 15, two screw rods, a sliding block 16 arranged on the screw rods, a pushing pin 17 arranged on the sliding block 16, a speed reducer and a centering and positioning driving motor 18, wherein the speed reducer is detachably arranged in the middle of the centering and positioning frame 15 by adopting bolts, one ends of the two screw rods, which are far away from each other, are rotationally connected with the centering and positioning frame 15 by adopting bearing seats, one ends of the two screw rods, which are opposite, are connected with the speed reducer and are driven to rotate in the same direction, so that the two screw rods are respectively positioned at two sides of the speed reducer, the two screw rods are rotationally opposite, the centering and positioning driving motor 18 is connected with the speed reducer, the two screw rods are driven to synchronously rotate by the speed reducer, the sliding blocks 16 on the two screw rods synchronously move towards the directions which are close to each other or are far away from each other along with the rotation of the screw rods, and when the sliding blocks 16 on the screw rods are close to each other, the pushing pin 17 on the sliding block 16 pushes a workpiece to be welded towards the middle direction of the two pushing pins 17, and centers the workpiece to be positioned.

As shown in fig. 3, the centering and positioning frame 15 in the utility model is a cuboid hollow box structure, a screw rod and a speed reducer are both arranged inside the centering and positioning frame 15, sliding grooves 19 penetrating the inside and the outside of the centering and positioning frame 15 are formed in the top of the centering and positioning frame 15 along the left-right direction, two sliding grooves 19 are respectively formed in the left side and the right side of the top of the centering and positioning frame 15, sliding blocks 16 are arranged inside the centering and positioning frame 15 and driven by the screw rod to move along the left-right direction, the top of each pushing pin 17 penetrates through the sliding groove 19 and synchronously moves along with the movement of the sliding blocks 16, two pushing pins 17 are arranged at the top of each sliding block 16, and the two pushing pins 17 respectively extend upwards from the two sliding grooves 19 to center the centering and positioning frame 15.

As shown in fig. 3, the centering driving motor 18 in the present utility model is detachably mounted at the bottom of the centering frame 15 using bolts, and the centering driving motor 18 is extended downward into the main beam 1. The pushing pin 17 is of a telescopic structure, can be adjusted in a telescopic mode according to the height of a workpiece to be welded in a use state, so that the pushing pin 17 cannot interfere with a welding gun, the pushing pin 17 can adopt a structure that an inner sleeve is arranged in an outer sleeve, the whole pushing pin 17 can be telescopic through telescopic of the inner sleeve in the outer sleeve, and telescopic structure can be realized in the prior art, for example, telescopic and fixing of the inner sleeve and the outer sleeve are realized through threaded fit of the inner sleeve and the outer sleeve.

When the centering positioning device is used, a workpiece to be welded is placed on a main beam 1, centering positioning is carried out through a centering positioning mechanism 3, specifically, two sliding blocks 16 are driven to move in opposite directions through a centering positioning driving motor 18, so that a pushing pin 17 on the sliding blocks 16 is driven to move in opposite directions, the workpiece to be welded is pushed towards the middle parts of the two sliding blocks 16, and finally centering positioning is finished; the rotary arms 5 are driven to rotate by the rotary driving device 7, all the rotary arms 5 rotate leftwards, the pressing mechanisms 6 on the left side of the rotary arms drive the pressing blocks 12 to press the workpieces to be welded, the welding on the left side of the workpieces to be welded is performed by the robot, when the first rotary pressing mechanism 2 is welded, the first rotary pressing mechanism 2 is driven to rotate rightwards by the rotary driving device 7 and presses the workpieces from the right side by the pressing mechanisms 6 on the right side of the first rotary pressing mechanism, when the second rotary pressing mechanism 2 is welded, the second rotary pressing mechanism 2 is driven to rotate rightwards by the rotary driving device 7 and presses the workpieces from the right side by the pressing mechanisms 6 on the right side of the second rotary pressing mechanism 2, so that the welding gun is driven to weld the workpieces from the left side of the workpieces until all the workpieces are welded, and then the workpieces are loosened for further processing.

Parts of the above description not specifically described are either prior art or may be implemented by prior art. Moreover, the embodiments of the present utility model are described in the preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Equivalent changes and modifications of the utility model are intended to be within the scope of the present utility model.

Claims

1. A string roof beam laser composite welding anchor clamps structure, its characterized in that: including girder (1), a plurality of rotatory hold-down mechanism (2) and a plurality of centering positioning mechanism (3), wherein rotatory hold-down mechanism (2) and centering positioning mechanism (3) are crisscross along the length direction of girder (1) to be set up, rotatory hold-down mechanism (2) are including fixing base (4), swinging boom (5), two hold-down mechanism (6) and rotary drive device (7), fixing base (4) are fixed on girder (1), swinging boom (5) are circular-arc, and set up on fixing base (4), the both ends of swinging boom (5) are located the both sides of girder (1) respectively, rotary drive device (7) are installed on fixing base (4), be used for driving swinging boom (5) rotatory on fixing base (4), both ends at swinging boom (5) are installed respectively to two hold-down mechanism (6) are followed the rotation of swinging boom (5) and are pressed the work piece of waiting the welded from left side or right side.

2. The chord Liang Jiguang composite welding jig structure as defined in claim 1, wherein: a gear ring (8) is arranged on one side of the rotating arm (5), the rotary driving device (7) is a rotary driving motor, a gear is arranged on an output shaft of the rotary driving motor, and the gear is meshed with the gear ring (8).

3. The chord Liang Jiguang composite welding jig structure according to claim 1 or 2, wherein: the fixing base (4) is provided with an arc-shaped channel penetrating through the left side and the right side of the fixing base and matched with the shape of the rotating arm (5), the rotating arm (5) is arranged in the arc-shaped channel and rotates in the arc-shaped channel, the left side and the right side of the front end and the rear end of the arc-shaped channel are respectively provided with an upper supporting wheel A (9) and a lower supporting wheel A (9), the upper supporting wheel A (9) is matched with an inner arc-shaped surface of the rotating arm (5), and the lower supporting wheel A (9) is matched with an outer arc-shaped surface of the rotating arm (5) and used for supporting the rotating arm (5).

4. A chord Liang Jiguang composite welding jig structure as defined in claim 3, wherein: the left end and the right end of the fixing seat (4) are respectively provided with a front supporting wheel B (10) and a rear supporting wheel B (10), and the supporting wheels B (10) are matched with the front side surface and the rear side surface of the rotating arm (5) and are used for axially limiting the rotating arm (5).

5. The chord Liang Jiguang composite welding jig structure as defined in claim 1, wherein: the compressing mechanism (6) comprises a guide pillar (11), a compressing block (12) and a compressing driving device (13), one end of the guide pillar (11) is fixedly connected with the compressing block (12), the guide pillar (11) is arranged along the radial direction of the rotating arm (5) and is in sliding connection with the rotating arm (5) through a linear bearing (14), and the compressing driving device (13) is arranged on the rotating arm (5) and is connected with the compressing block (12) and is used for driving the compressing block (12) to move along the radial direction of the rotating arm (5).

6. The chord Liang Jiguang composite welding jig structure as defined in claim 5, wherein: the compressing driving device (13) is an electric cylinder, the number of the guide posts (11) is two, the two guide posts (11) are arranged in parallel, a piston rod of the electric cylinder is positioned between the two guide posts (11) and connected with the compressing block (12), and the piston rod of the electric cylinder stretches and contracts to drive the compressing block (12) to move.

7. The chord Liang Jiguang composite welding jig structure as defined in claim 1, wherein: the centering positioning mechanism (3) comprises a centering positioning frame (15), a screw rod, a sliding block (16) arranged on the screw rod, a pushing pin (17) arranged on the sliding block (16) and a centering positioning driving motor (18), wherein the screw rod is rotationally connected with the centering positioning frame (15), the centering positioning driving motor (18) is connected with the screw rod and is used for driving the screw rod to rotate, the sliding block (16) synchronously moves towards directions approaching to or away from each other along with the rotation of the screw rod, and when the sliding blocks (16) on the screw rod approach to each other, the pushing pin (17) on the sliding block (16) pushes a workpiece to be welded towards the middle direction of the two pushing pins (17).

8. The chord Liang Jiguang composite welding jig structure as defined in claim 7, wherein: the centering positioning rack (15) is of a hollow box body structure, the screw rod is arranged inside the centering positioning rack (15), a sliding groove (19) penetrating the inside and the outside of the centering positioning rack (15) is formed in the top of the centering positioning rack along the left-right direction, the sliding block (16) is arranged inside the centering positioning rack (15) and driven by the screw rod to move along the left-right direction, and the top of the pushing pin (17) penetrates through the sliding groove (19) and moves synchronously along with the movement of the sliding block (16).

9. The chord Liang Jiguang composite welding jig structure as defined in claim 8, wherein: the centering and positioning driving motor (18) is arranged at the bottom of the centering and positioning frame (15) and is connected with a screw rod through a speed reducer.

10. The chord Liang Jiguang composite welding jig structure as defined in claim 7, wherein: the pushing pin (17) is of a telescopic structure and is used for carrying out telescopic adjustment according to the height of a workpiece to be welded.