Rotary positioning mechanism for precise laser welding

Abstract

The invention discloses a rotary positioning mechanism for precise laser welding, and relates to the field of rotary positioning mechanisms, the rotary positioning mechanism comprises a base, a rotary seat and mounting seats, telescopic cylinders are symmetrically mounted in the two mounting seats, telescopic rods are movably mounted on the inner walls of the telescopic cylinders, and one ends of the telescopic rods extend to the outer walls of the mounting seats; push plates are movably mounted at one ends of the two mounting seats, the two push plates are connected with the corresponding telescopic rods respectively, a driving motor is mounted in the base, a driving shaft is mounted at the output end of the driving motor, one end of the driving shaft is connected with the rotating seat, and the driving shaft is movably connected with the multiple telescopic cylinders. According to the laser welding device, the mounting base and the push plate are arranged, the push plate pushes a workpiece from the upper end of the workpiece, the welding end of the workpiece is pushed to the center of the rotating base, laser welding is conducted on the workpiece, and the working efficiency is improved; and harmful gas generated during laser welding is absorbed.

Description

Technical Field

[0001] The invention relates to the field of rotation positioning mechanisms, in particular to a rotation positioning mechanism for precision laser welding. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully used in the precision welding of micro and small parts.

[0003] In the work of precision laser welding, the laser welding gun head is usually mounted on one end of the operating table, and a rotating positioning mechanism is installed on the upper end of the operating table. The operator first performs preliminary spot welding on the workpiece to be welded, and then places the workpiece that has completed the preliminary spot welding on the upper end of the rotating positioning mechanism. After the rotating positioning mechanism fixes the workpiece in the center from the lower end of the workpiece, the rotating positioning mechanism rotates, driving the workpiece to rotate, and at the same time the laser welding gun head welds the workpiece.

[0004] In the prior art, after the workpiece is placed on the upper end of the rotary positioning mechanism, the rotary positioning mechanism mostly fixes the workpiece in the center from the bottom of the workpiece. However, this type of centering fixation method is only suitable for workpieces that are welded at the center. When the welding part is biased towards the center, the operator is required to manually place the welding part of the workpiece to the center of the rotary positioning mechanism. If the placement position deviates, it will cause welding errors and waste of materials. Alternatively, manual welding is used, but the work efficiency is low. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a rotation positioning mechanism for precision laser welding to solve the technical problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a precision laser welded rotation positioning mechanism, comprising a base, a rotating seat and a mounting seat, wherein the rotating seat is movably mounted on the upper end of the base, and the mounting seat is symmetrically mounted on the upper end of the base; The two groups of mounting seats are symmetrically provided with shrinking cylinders, the inner walls of the multiple groups of shrinking cylinders are movably provided with telescopic rods, and one end of the multiple groups of telescopic rods extends to the outer wall of the mounting seats, and one end of the two groups of mounting seats is movably provided with push plates, and the two groups of push plates are respectively connected to the corresponding telescopic rods; A driving motor is installed inside the base, a driving shaft is installed at the output end of the driving motor, and one end of the driving shaft is connected to the rotating seat, and the driving shaft is movably connected to multiple groups of shrinking cylinders.

[0007] By adopting the above technical solution, the problem of the workpiece welding position not being fixed in the center is solved. The push plate is raised by the mounting seat, and the operator places the workpiece to be welded on the upper end of the rotating seat. The drive shaft rotates counterclockwise, driving the transmission shaft to rotate, thereby driving the shrinking tube to rotate, causing the telescopic rod to move outward, thereby driving the push plate to move, and pushing the workpiece to move. After the two sets of push plates push the workpiece welding end from the upper end of the workpiece to the center of the rotating seat, the welding device performs laser welding on the workpiece. The two sets of push plates enable the workpiece welding end to be in the center of the rotating seat, thereby improving work efficiency.

[0008] The present invention is further configured such that a one-way bearing is provided between the driving shaft and the rotating seat, a plurality of groups of limiting holes are provided at the upper end of the rotating seat, a plurality of groups of connecting grooves are provided inside the rotating seat, and the plurality of groups of connecting grooves are respectively connected to the plurality of groups of limiting holes.

[0009] By adopting the above technical solution and setting the one-way bearing, when the drive shaft rotates counterclockwise, the rotating seat does not rotate, and the multiple groups of connecting grooves connect the multiple groups of limiting holes.

[0010] The present invention is further configured such that an annular groove is opened at the bottom end of the rotating seat, and the annular groove is connected to multiple groups of connecting grooves, a limiting plate is installed at the bottom end of the annular groove, a limiting track is installed on the inner wall of the base, and the outer wall of the limiting plate is movably connected to the inner wall of the limiting track, an air pipe is installed at one end of the limiting track, and the air pipe is connected to an external suction pump and an air filter device.

[0011] By adopting the above technical solution, the air pump is started, suction is generated through the air pipe, and suction is generated inside the limiting track, and the limiting plate is movably connected to the limiting track, so that the suction enters the annular groove through the limiting plate, and the annular groove is connected to multiple groups of connecting grooves, and the multiple groups of connecting grooves are connected to one end of multiple groups of limiting holes, so that the limiting holes generate suction, the limiting holes at the lower end of the workpiece adsorb and fix the workpiece, and the remaining limiting holes recover harmful gases generated during laser welding.

[0012] The present invention is further configured such that the cross-sections of the two groups of mounting seats are both "L"-shaped, transmission shafts are installed inside the two groups of mounting seats, transmission bevel gears are installed on the upper ends of the two groups of transmission shafts, and the two groups of transmission shafts are connected to the drive shafts respectively through a second belt.

[0013] By adopting the above technical solution, the mounting seat lifts the push plate. When the drive shaft rotates, the two sets of transmission shafts are connected to each other through the second belt, so the two sets of transmission shafts rotate, thereby driving the two sets of transmission bevel gears to rotate.

[0014] The present invention is further configured such that linkage shafts are installed inside the two groups of mounting seats, linkage bevel gears are installed at one end of the two groups of linkage shafts, and the two groups of linkage bevel gears are respectively meshed and connected with the two groups of transmission bevel gears.

[0015] By adopting the above technical solution, the two sets of transmission bevel gears rotate, and the two sets of transmission bevel gears are respectively meshed and connected with the two sets of linkage bevel gears, thereby driving the two sets of linkage bevel gears to rotate, and then driving the two sets of linkage shafts to rotate.

[0016] The present invention is further configured such that the two groups of linkage shafts are respectively connected to the multiple groups of shrinking cylinders via a first belt, and springs are installed inside the multiple groups of shrinking cylinders.

[0017] By adopting the above technical solution, when the two groups of connecting shafts rotate, the two groups of connecting shafts are respectively connected to the multiple groups of shrinking cylinders through the first belt, thereby driving the multiple groups of shrinking cylinders to rotate. When the rotating seat rotates, the telescopic rod moves into the shrinking cylinder, and the telescopic rod continues to move, squeezing the spring, and the spring pushes the telescopic rod to be continuously threadedly connected with the shrinking cylinder.

[0018] The present invention is further configured such that the two groups of push plates are relatively inclined away from one end of the telescopic rod, and air suction grooves are provided at the lower ends of the push plates, and rubber cushion layers are installed on the outer walls of the two groups of push plates.

[0019] By adopting the above technical solution, when the two groups of push plates are displaced, the outer wall of the push plate contacts the outer wall of the upper end of the workpiece and pushes the workpiece to displace, and the outer wall of the push plate is relatively inclined, so that the workpiece moves toward the center of the rotating seat and moves toward the center position of the push plate at the same time, thereby improving the effect of moving the workpiece toward the center position of the rotating seat.

[0020] The present invention is further configured such that two groups of corrugated hoses are installed at one end of the two groups of mounting seats, and one end of multiple groups of corrugated hoses are respectively connected to the air outlet ends of the push plates, and one end of multiple groups of corrugated hoses are connected to the limiting rails through connecting pipes.

[0021] By adopting the above technical solution, when suction is generated inside the limit track, the connecting pipe connects the limit track with the corrugated hose, and one end of the corrugated hose is connected to the air outlet end of the push plate, so that suction is generated at the lower end of the limit plate, further recovering the harmful gas generated during laser welding, thereby improving the harmful gas recovery effect.

[0022] The present invention is further configured such that a visual camera is installed on one side of the base, and the visual camera is electrically connected to the driving motor and the suction pump.

[0023] By adopting the above technical solution, the movement of the workpiece is observed by a visual camera, so as to control the drive motor and the suction pump accordingly.

[0024] In summary, the present invention mainly has the following beneficial effects: 1. The present invention solves the problem of the workpiece welding position not being fixed in the center by providing a mounting seat and a push plate. The push plate is raised by the mounting seat, and the operator places the workpiece to be welded on the upper end of the rotating seat. The driving shaft rotates counterclockwise, driving the transmission shaft to rotate, thereby driving the shrinking tube to rotate, causing the telescopic rod to move outward, thereby driving the push plate to move, and pushing the workpiece to move. After the two groups of push plates push the workpiece welding end from the upper end of the workpiece to the center of the rotating seat, the visual camera controls the driving shaft to rotate clockwise and the suction pump to start, and the welding device performs laser welding on the workpiece. The two groups of push plates enable the workpiece welding end to be in the center of the rotating seat, thereby improving work efficiency.

[0025] 2. The present invention is provided with a push plate, a rotating seat, a limiting hole and an air pipe. The air pipe is connected to an air suction pump. When the air suction pump is started, suction is generated through the air pipe, so that the limiting holes generate suction. The limiting holes at the lower end of the workpiece adsorb and fix the workpiece, and the remaining limiting holes recover the harmful gases generated during laser welding. At the same time, suction is generated at the lower end of the push plate to further recover the harmful gases generated during laser welding, thereby improving the recovery effect of harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the base installation of the rotary positioning mechanism for precision laser welding of the present invention; Figure 2 It is a structural schematic diagram of the rotary positioning mechanism for precision laser welding of the present invention; Figure 3 A schematic diagram of a driving motor of a rotary positioning mechanism for precision laser welding according to the present invention; Figure 4 It is a schematic diagram of a rotating seat of the rotating positioning mechanism for precision laser welding of the present invention; Figure 5 A side cross-sectional view of a rotating seat of a rotating positioning mechanism for precision laser welding according to the present invention; Figure 6 It is a schematic diagram of a mounting seat of a rotary positioning mechanism for precision laser welding according to the present invention; Figure 7 It is a schematic diagram of the limiting track of the rotary positioning mechanism for precision laser welding of the present invention; Figure 8 This is a schematic diagram of the internal structure of the mounting seat of the rotary positioning mechanism for precision laser welding described in the present invention.

[0027] In the figure: 1. base; 2. rotating seat; 3. limiting hole; 4. connecting groove; 5. annular groove; 6. limiting plate; 7. driving motor; 8. driving shaft; 9. one-way bearing; 10. limiting track; 11. air pipe; 12. mounting seat; 13. transmission shaft; 14. transmission bevel gear; 15. linkage bevel gear; 16. linkage shaft; 17. first belt; 18. contraction cylinder; 19. telescopic rod; 20. push plate; 21. connecting pipe; 22. corrugated hose; 23. second belt. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The following describes an embodiment of the present invention based on its overall structure.

[0030] Precision laser welded rotary positioning mechanism, such as Figure 1 - Figure 8 As shown, it includes a base 1, a rotating base 2 and a mounting base 12. The rotating base 2 is movably mounted on the upper end of the base 1, a workpiece is placed on the upper end of the rotating base 2, and the mounting base 12 is symmetrically mounted on the upper end of the base 1; The two groups of mounting seats 12 are symmetrically installed with shrinking cylinders 18, and the inner walls of the multiple groups of shrinking cylinders 18 are movably installed with telescopic rods 19. The shrinking cylinders 18 rotate to drive the telescopic rods 19 to move, and one end of the multiple groups of telescopic rods 19 extends to the outer wall of the mounting seat 12. The push plates 6 are movably installed at one end of the two groups of mounting seats 12. The mounting seats 12 lift the push plates 6, and the two groups of push plates 6 are respectively connected to the corresponding telescopic rods 19, and the push plates 6 push the workpiece to move; A driving motor 7 is installed inside the base 1, and a driving shaft 8 is installed at the output end of the driving motor 7. When the driving motor 7 is started, the driving shaft 8 is driven to rotate, and one end of the driving shaft 8 is connected to the rotating seat 2. The driving shaft 8 is movably connected to the multiple groups of shrinking cylinders 18. When the driving shaft 8 rotates, it drives the rotating seat 2 and the multiple groups of shrinking cylinders 18 to operate.

[0031] See also Figure 3 - Figure 5 A one-way bearing 9 is arranged between the driving shaft 8 and the rotating seat 2, a plurality of groups of limiting holes 3 are provided at the upper end of the rotating seat 2, a plurality of groups of connecting grooves 4 are provided inside the rotating seat 2, and the plurality of groups of connecting grooves 4 are respectively connected to the plurality of groups of limiting holes 3. Through the arrangement of the one-way bearing 9, when the driving shaft rotates counterclockwise, the rotating seat 2 does not rotate, and the plurality of groups of connecting grooves 4 connect the plurality of groups of limiting holes 3.

[0032] See also Figure 4 - Figure 7 A ring groove 5 is provided at the bottom end of the rotating seat 2, and the ring groove 5 is connected to multiple groups of connecting grooves 4, a limiting plate 6 is installed at the bottom end of the ring groove 5, a limiting track 10 is installed on the inner wall of the base 1, and the outer wall of the limiting plate 6 is movably connected to the inner wall of the limiting track 10, an air pipe 11 is installed at one end of the limiting track 10, and the air pipe 11 is connected to the external suction pump and the air filter device. When the suction pump is started, suction is generated through the air pipe 11, and suction is generated inside the limiting track 10, and the limiting plate 6 is movably connected to the limiting track 10, so that the suction enters the inside of the ring groove 5 through the limiting plate 6, and the ring groove 5 is connected to multiple groups of connecting grooves 4, and multiple groups of connecting grooves 4 are connected to one end of multiple groups of limiting holes 3, so that the limiting holes 3 generate suction, the limiting holes 3 at the lower end of the workpiece adsorb and fix the workpiece, and the remaining limiting holes 3 recover the harmful gases generated during laser welding.

[0033] See also Figure 7 - Figure 8 The cross-sections of the two sets of mounting seats 12 are both "L"-shaped. Transmission shafts 13 are installed inside the two sets of mounting seats 12. Transmission bevel gears 14 are installed on the upper ends of the two sets of transmission shafts 13. The two sets of transmission shafts 13 are connected to the drive shaft 8 through the second belt 23 respectively. The mounting seat lifts the push plate 6. When the drive shaft 8 rotates, because the drive shaft 8 and the two sets of transmission shafts 13 are connected to each other through the second belt 23 respectively, the two sets of transmission shafts 13 rotate, thereby driving the two sets of transmission bevel gears 14 to rotate.

[0034] See also Figure 8 A connecting shaft 16 is installed inside the two sets of mounting seats 12, and a connecting bevel gear 15 is installed at one end of the two sets of connecting shafts 16, and the two sets of connecting bevel gears 15 are respectively meshed and connected with the two sets of transmission bevel gears 14. The two sets of transmission bevel gears 14 rotate, and the two sets of transmission bevel gears 14 are respectively meshed and connected with the two sets of connecting bevel gears 15, thereby driving the two sets of connecting bevel gears 15 to rotate, and then driving the two sets of connecting shafts 16 to rotate.

[0035] See also Figure 8 The two groups of linkage shafts 16 are respectively connected to the multiple groups of shrinking cylinders 18 through the first belts 17, and springs are installed inside the multiple groups of shrinking cylinders 18. When the two groups of linkage shafts 16 rotate, the two groups of linkage shafts 16 are respectively connected to the multiple groups of shrinking cylinders 18 through the first belts 17, thereby driving the multiple groups of shrinking cylinders 18 to rotate. When the rotating seat 2 rotates, the telescopic rod 19 moves into the shrinking cylinder 18, and the telescopic rod 19 continues to move, squeezing the spring, and the spring pushes the telescopic rod 19 to be continuously threadedly connected with the shrinking cylinder 18.

[0036] See also Figure 7- Figure 8 The two groups of push plates 6 are relatively inclined at one end away from the telescopic rod 19, and a suction groove is provided at the lower end of the push plate 6. The outer walls of the two groups of push plates 6 are installed with rubber pads. When the two groups of push plates 6 are displaced, the outer wall of the push plate 6 contacts the outer wall of the upper end of the workpiece and pushes the workpiece to displace. The outer wall of the push plate 6 is relatively inclined, so that the workpiece moves toward the center of the rotating seat 2 while moving toward the center position of the push plate 6, thereby improving the effect of moving the workpiece to the center position of the rotating seat 2.

[0037] See also Figure 7 - Figure 8 Two groups of corrugated hoses 22 are installed at one end of the two groups of mounting seats 12, and one end of the multiple groups of corrugated hoses 22 are respectively connected to the air outlet ends of the push plates 6, and one end of the multiple groups of corrugated hoses 22 are connected to the limiting track 10 through the connecting pipe 21. When suction is generated inside the limiting track 10, the connecting pipe 21 connects the limiting track 10 with the corrugated hose 22, and one end of the corrugated hose 22 is connected to the air outlet end of the push plate 20, so that suction is generated at the lower end of the limiting plate 6, and the harmful gas generated during laser welding is further recovered, thereby improving the harmful gas recovery effect.

[0038] See also Figure 1 - Figure 2 A visual camera is installed on one side of the base 1, and the visual camera is electrically connected to the drive motor 7 and the suction pump. The movement of the workpiece is observed by the visual camera, so as to control the drive motor 7 and the suction pump accordingly.

[0039] The working principle of the present invention is as follows: when the operator uses the device, the operator places the workpiece to be welded on the upper end of the rotating seat 12, and the workpiece is preliminarily spot-welded so that the two parts of the workpiece are connected to each other, which is convenient for later welding. The driving motor 7 is started, and the driving shaft 8 is rotated, and the driving shaft 8 is rotated in a counterclockwise direction. Since the one-way bearing 9 is idle at this time, the rotating seat 2 will not rotate with the driving shaft 8; When the driving shaft 8 rotates, since the driving shaft 8 and the two sets of transmission shafts 13 are respectively connected through the second belt 23, the two sets of transmission shafts 13 rotate, thereby driving the two sets of transmission bevel gears 14 to rotate, and the two sets of transmission bevel gears 14 are respectively meshed and connected with the two sets of linkage bevel gears 15, thereby driving the two sets of linkage linkage bevel gears 15 to rotate, and then driving the two sets of linkage shafts 16 to rotate; When the two sets of linkage shafts 16 rotate, the two sets of linkage shafts 16 are respectively connected to the multiple sets of contraction cylinders 18 through the first belts 17, thereby driving the multiple sets of contraction cylinders 18 to rotate, and the multiple sets of contraction cylinders 18 are respectively threadedly connected to the multiple sets of telescopic rods 19, so the telescopic rods 19 are displaced, thereby pushing the push plate 6 to displace; When the two groups of push plates 6 are displaced, the outer wall of the push plate 6 contacts the outer wall of the upper end of the workpiece and pushes the workpiece to displace, and the outer wall of the push plate 6 is relatively inclined, so that the workpiece moves toward the center of the rotating seat 2 while moving toward the center position of the push plate 6, thereby improving the effect of moving the workpiece toward the center position of the rotating seat 2; When the workpiece moves to the center of the rotating seat 12, the visual camera observes the receiving signal, stops the drive motor 7 to drive the drive shaft 8 to rotate counterclockwise, and makes the drive motor 7 drive the drive shaft 8 to rotate clockwise, and starts the suction pump at the same time; When the driving shaft 8 rotates clockwise, the rotating seat 2 is driven to rotate, and at the same time the laser welding device performs laser welding on the workpiece; The suction pump is started, and suction is generated through the air pipe 11, and suction is generated inside the limiting track 10, and the limiting plate 6 is movably connected to the limiting track 10, so that the suction enters the annular groove 5 through the limiting plate 6, and the annular groove 5 is connected to the multiple groups of connecting grooves 4, and the multiple groups of connecting grooves 4 are connected to one end of the multiple groups of limiting holes 3, so that the limiting holes 3 generate suction, and the limiting holes 3 at the lower end of the workpiece adsorb and fix the workpiece, and the remaining limiting holes 3 recover the harmful gas generated during laser welding; When suction is generated inside the limiting track 10, the connecting pipe 21 connects the limiting track 10 with the corrugated hose 22, and one end of the corrugated hose 22 is connected to the gas outlet end of the push plate 20, so that suction is generated at the lower end of the limiting plate 6, and the harmful gas generated during laser welding is further recovered, thereby improving the harmful gas recovery effect; The present invention arranges a mounting seat 12 and a push plate 20. The push plate 20 pushes the workpiece from the upper end of the workpiece and pushes the welding end of the workpiece to the center of the rotating seat, thereby performing laser welding on the workpiece to improve work efficiency. In addition, by arranging the rotating seat 2, the limiting hole 3 and the push plate 20, the workpiece is adsorbed and fixed while absorbing harmful gases generated during laser welding to reduce air pollution.

[0040] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A precision laser welding rotary positioning mechanism, comprising a base (1), a rotary seat (2) and a mounting seat (12), characterized in that: A rotating seat (2) is movably mounted on the upper end of the base (1), and a mounting seat (12) is symmetrically mounted on the upper end of the base (1); The two groups of mounting seats (12) are symmetrically provided with retractable cylinders (18), the inner walls of the multiple groups of retractable cylinders (18) are movably provided with telescopic rods (19), and one end of the multiple groups of telescopic rods (19) extends to the outer wall of the mounting seat (12), and one end of the two groups of mounting seats (12) is movably provided with push plates (6), and the two groups of push plates (6) are respectively connected to the corresponding telescopic rods (19); A driving motor (7) is installed inside the base (1), a driving shaft (8) is installed at the output end of the driving motor (7), and one end of the driving shaft (8) is connected to the rotating base (2), and the driving shaft (8) is movably connected to the plurality of shrinking tubes (18).

2. The rotary positioning mechanism for precision laser welding according to claim 1, characterized in that: A one-way bearing (9) is provided between the driving shaft (8) and the rotating seat (2); a plurality of groups of limiting holes (3) are provided at the upper end of the rotating seat (2); a plurality of groups of connecting grooves (4) are provided inside the rotating seat (2), and the plurality of groups of connecting grooves (4) are respectively connected to the plurality of groups of limiting holes (3).

3. The rotary positioning mechanism for precision laser welding according to claim 2, characterized in that: The bottom end of the rotating seat (2) is provided with an annular groove (5), and the annular groove (5) is connected to a plurality of groups of connecting grooves (4). A limiting plate (6) is installed at the bottom end of the annular groove (5). A limiting track (10) is installed on the inner wall of the base (1), and the outer wall of the limiting plate (6) is movably connected to the inner wall of the limiting track (10). An air pipe (11) is installed at one end of the limiting track (10), and the air pipe (11) is connected to an external air suction pump and an air filter device.

4. The rotary positioning mechanism for precision laser welding according to claim 1, characterized in that: The two groups of mounting seats (12) have cross-sections of an "L" shape, and transmission shafts (13) are installed inside the two groups of mounting seats (12). Transmission bevel gears (14) are installed at the upper ends of the two groups of transmission shafts (13). The two groups of transmission shafts (13) are connected to the drive shaft (8) via a second belt (23).

5. The rotary positioning mechanism for precision laser welding according to claim 4, characterized in that: A linkage shaft (16) is installed inside the two sets of mounting seats (12), and a linkage bevel gear (15) is installed at one end of the two sets of linkage shafts (16), and the two sets of linkage bevel gears (15) are respectively meshed and connected with the two sets of transmission bevel gears (14).

6. The rotary positioning mechanism for precision laser welding according to claim 5, characterized in that: The two groups of linkage shafts (16) are respectively connected to the multiple groups of shrinking cylinders (18) via first belts (17), and springs are installed inside the multiple groups of shrinking cylinders (18).

7. The rotary positioning mechanism for precision laser welding according to claim 1, characterized in that: The two groups of push plates (6) are arranged at an angle relative to one another at one end away from the telescopic rod (19), and air suction grooves are arranged at the lower ends of the push plates (6). Rubber cushion layers are installed on the outer walls of the two groups of push plates (6).

8. The rotary positioning mechanism for precision laser welding according to claim 7, characterized in that: Two groups of corrugated hoses (22) are installed at one end of each of the two groups of mounting seats (12), and one end of the multiple groups of corrugated hoses (22) are respectively connected to the air outlet ends of the push plates (6), and one end of the multiple groups of corrugated hoses (22) are connected to the limiting track (10) via a connecting pipe (21).

9. The rotary positioning mechanism for precision laser welding according to claim 1, characterized in that: A visual camera is installed on one side of the base (1), and the visual camera is electrically connected to the drive motor (7) and the suction pump.

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