CN115283772A

CN115283772A - Laser welding rotary wire feeding device

Info

Publication number: CN115283772A
Application number: CN202210798858.1A
Authority: CN
Inventors: 王铎; 王万杰; 黎兴宝; 吴丰华; 蒋明生; 戴威
Original assignee: Jiangsu Yawei Machine Tool Co Ltd
Current assignee: Jiangsu Yawei Machine Tool Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-11-04

Abstract

The invention discloses a laser welding rotary wire feeding device, which comprises a laser welding head and a rotary wire feeding device arranged on the laser welding head through a fixing plate, wherein the rotary wire feeding device comprises a base, a servo motor positioned above the base and a wire feeding mechanism positioned below the base, the base is sleeved on the laser welding head, a cavity structure is arranged in the base, a driven belt wheel sleeved on the laser welding head is arranged in the base, the upper end of the wire feeding mechanism is connected with the driven belt wheel, the servo motor drives the driven belt wheel to rotate, the wire feeding mechanism comprises a supporting plate, a wire feeding head assembly positioned below the supporting plate and an adjusting assembly used for connecting the supporting plate and the wire feeding head assembly and adjusting the state of the wire feeding head assembly, and the problem that the existing wire feeding head assembly cannot adjust the state of a welding wire according to welding requirements after rotating to an adjusting position, so that the welding wire cannot be over against the laser welding head and the welding position to finish a welding task well is solved.

Description

Laser welding rotary wire feeding device

Technical Field

The invention relates to the technical field of laser welding wire feeding, in particular to a rotary wire feeding device for laser welding.

Background

In recent years, with the development of laser welding technology, wire-filling laser welding is adopted, the requirement of workpiece assembly clearance can be greatly reduced, but the wire-filling welding requirement is high, the wire-filling direction needs to be opposite to the welding running direction in the welding process, when the welding circumference or rectangle and the like are sealed and welded, the motion posture of a robot or a laser welding head needs to be changed to adapt to the wire-filling welding requirement, the consistency of the quality of a welding seam is reduced, the welding efficiency is reduced, and corresponding equipment is developed to solve the problems.

Chinese patent with patent number CN210451284U discloses an automatic rotatory thread feeding mechanism, including laser head, motor and bearing, the surface at the fixed plate is installed to the laser head, motor fixed mounting is on the surface of motor fixed plate, through the screw connection between motor fixed plate and the fixed plate, install the action wheel on the output shaft of motor bottom, the fixed plate surface mounting of laser head bottom has the bearing frame, the last surface mounting of rotary sleeve has from the driving wheel, the below of rotary sleeve is installed and is sent a first locking piece, send the below of first locking piece to install and send a first subassembly, the action wheel is connected through the hold-in range between the follow driving wheel.

Use above-mentioned patent the equipment realize the transport to the welding wire, but send a thread packet spare and can't be after rotating the regulation position, when the position welding to different situations, can't adjust the state of welding wire according to the welding demand, cause and can't make the welding wire just to laser welder head and the better completion welding task in welding position, in order to solve above-mentioned problem, the inventor has designed this scheme.

Disclosure of Invention

The invention aims to provide a rotary wire feeding device for laser welding, aiming at solving the problem that the existing wire feeding head assembly cannot adjust the state of a welding wire according to welding requirements after rotating to an adjusting position, so that the welding wire cannot be directly opposite to a laser welding head and the welding position can not finish a welding task well.

The invention is realized by the following steps:

the utility model provides a rotatory wire drive feed unit of laser welding, including the laser welder head, still include the rotatory wire drive feed unit of installing on the laser welder head through the fixed plate, rotatory wire drive feed unit includes the base, be located the servo motor of base top and be located the wire feeder below the base, the base cover is established at the laser welder head and inside sets up to the cavity structure, the inside driven pulleys who establishes on the laser welder head that is provided with of base, wire feeder's upper end and driven pulleys are connected, servo motor drive driven pulleys rotates, wire feeder includes the backup pad, the wire drive feed head subassembly that is located the backup pad below and the adjusting part who is used for joint support board and wire drive feed head subassembly and adjusts the wire drive feed head subassembly state.

By adopting the technical scheme, the installation mode of the wire feeding mechanism can be conveniently changed through the work of the rotary wire feeding device, so that the state of the wire feeding mechanism can be adjusted according to the welding requirement, the requirement of a multi-position and multi-direction welding machine is met, the setting of the base is convenient for providing support for the installation of the servo motor and the wire feeding mechanism, the servo motor is convenient for driving the wire feeding mechanism to rotate around a laser welding head through the work of the servo motor, so that the position of the welding wire can be adjusted according to the welding requirement, the setting of the wire feeding mechanism is convenient for adjusting the state of the welding wire through the work, meanwhile, the effective adjustment of the spatial position of the welding wire is realized by matching with the servo motor, the convenience is provided for welding, the setting of the adjusting component is convenient for adjusting the state of the wire feeding head component through the work of the adjusting component, and then the adjusting state of the wire feeding head after the wire feeding head rotates around the laser welding head, so that the welding wire and the laser welding head are matched to complete the welding, and the conveying of the welding wire through the work of the wire feeding head component is facilitated.

Further, the adjusting assembly comprises a motor, a connecting plate group and an adjusting device located below the motor, the motor is placed in an inverted mode, the connecting plate group wraps the motor, the upper end of the connecting plate group is connected with the supporting plate, and the adjusting device is connected with an output shaft of the motor.

By adopting the technical scheme, the motor is arranged so as to drive the rotating plate to rotate on the horizontal plane through the working of the motor, namely, the welding wires rotate on the horizontal plane.

Further, the adjusting device comprises a rotating plate and a tubular motor located below the rotating plate, two connecting plates are symmetrically and fixedly connected to the lower portion of the rotating plate, two ends of the tubular motor are respectively inserted into the two connecting plates, a sleeve is fixedly connected to the upper portion of the wire feeding head assembly, the sleeve is sleeved on the middle portion of the tubular motor, and a plurality of limiting rods of the tubular motor are respectively installed in limiting grooves of the sleeve and the connecting plates.

By adopting the technical scheme, the tubular motor is arranged to drive the welding wire to rotate on the vertical surface through the work of the tubular motor, the tubular motor is matched with the motor to realize the three-dimensional adjustment of the welding wire, so that the welding wire and the laser welding head are matched to complete a welding task, the limiting rod and the limiting groove are arranged to ensure that the two ends and the middle part of the tubular motor are kept relatively static on the connecting plate and the sleeve respectively, and the adjustment of the state of the wire feeding head component is facilitated.

Furthermore, the side of going up of rotor plate has seted up the jack perpendicularly, and the perforation has been seted up perpendicularly to the output shaft of motor, and the output shaft of motor inserts in the jack, and bolt screw thread inserts in the rotor plate and insert in the perforation.

Further, connecting plate group is including the first bottom plate and the second bottom plate that constitute square structure and pass through bolted connection, the equal fixedly connected with riser in two end angle positions department in first bottom plate top, the equal fixedly connected with second riser in two end angle in second bottom plate top, the motor holds in the palm is put in first bottom plate and second bottom plate top, the lateral wall contact of first riser and second riser and motor, the restriction groove has been seted up to the lateral wall of first riser, motor lateral wall fixedly connected with installs the restriction post in the restriction inslot.

By adopting the technical scheme, the first bottom plate and the second bottom plate are convenient to support for the installation of the motor and provide convenience for the quick assembly disassembly motor.

Further, the upper end fixedly connected with buckle board of second riser, the buckle groove has been seted up at terminal surface both ends angle under the backup pad, and the buckle board is installed in the buckle inslot, and first riser upper end is connected with the backup pad.

Furthermore, a hollow shaft fixedly arranged on the laser welding head is arranged inside the driven belt wheel, and a connecting bearing is arranged in a gap between the hollow shaft and the driven belt wheel.

Furthermore, an output shaft of the servo motor inserted into the base is fixedly connected with a driving belt wheel, the driving belt wheel is connected with a driven belt wheel through a synchronous belt, and the synchronous belt is provided with a tensioning device used for adjusting the tensioning degree of the synchronous belt between the driving belt wheel and the driven belt wheel.

By adopting the technical scheme, the tensioning device is convenient to stably sleeve the driving belt wheel and the driven belt wheel through two ends of the work control synchronous belt, so that the wire feeding mechanism is controlled to rotate through the work of the servo motor.

Further, overspeed device tensioner includes first diaphragm and supports and presses the device, first slip draw-in groove has been seted up to the side of going up of first diaphragm, be provided with first pivot in the first slip draw-in groove, the lateral wall of first pivot is provided with helicitic texture, support and press the device to include the belt pulley, the lower extreme passes through the bearing and connects the connecting axle that inserts in the belt pulley and install the slip cardboard in the connecting axle top, the slip cardboard is installed in first slip draw-in groove, and first pivot screw thread passes the slip cardboard, and the belt pulley contacts with the hold-in range.

Adopt above-mentioned technical scheme, the setting of first diaphragm is convenient for provide the support for the installation of pressing the device, and the setting of pressing the device is convenient for to press the lateral wall of hold-in range, makes the lateral wall of hold-in range remove and tighten, does not influence the rotation of hold-in range simultaneously, and the setting of first pivot is convenient for rotate under the effect of external force, and the control slip cardboard removes in first slip draw-in groove, facilitates for the position that changes the belt pulley.

Further, overspeed device tensioner includes the second diaphragm and two support and press the device, second sliding clamping groove has been seted up to the side of going up of second diaphragm, be provided with the second pivot in the second sliding clamping groove, the lateral wall symmetry of second pivot is provided with two helicitic texture, support and press the device and include the belt pulley, the lower extreme passes through the connecting axle that the bearing connection inserted in the belt pulley and installs the slip cardboard in the connecting axle top, two slip cardboards are installed in first sliding clamping groove, and the both ends difference screw thread of second pivot pass two slip cardboards, and two belt pulleys contact with the both sides wall of hold-in range respectively.

Adopt above-mentioned technical scheme, the setting up of second diaphragm is convenient for provide the support for two installation and removal that support the pressure device, and two setting up of supporting the pressure device are convenient for support the both sides wall of pressing the hold-in range simultaneously to the short distance through the hold-in range removes the tight degree that effectively changes the hold-in range.

Compared with the prior art, the invention has the beneficial effects that:

1. the arrangement of the rotary wire feeding device is convenient for changing the installation mode of the wire feeding mechanism through the work of the rotary wire feeding device, so that the state of the wire feeding mechanism can be adjusted according to the welding requirement, and convenience is provided for meeting the requirements of a multi-point and multi-direction welding machine;

2. the servo motor is arranged to drive the wire feeding mechanism to rotate around the laser welding head through the work of the servo motor, so that the position of the welding wire can be adjusted according to the welding requirement, the state of the welding wire can be adjusted through the work of the wire feeding mechanism, and meanwhile, the servo motor is matched with the wire feeding mechanism to effectively adjust the spatial position of the welding wire, so that the welding is facilitated;

3. the tubular motor is arranged to drive the welding wire to rotate on a vertical surface through the work of the tubular motor, and the tubular motor is adjusted and matched with the motor to adjust the welding wire on a horizontal surface to realize the three-dimensional adjustment of the welding wire, so that the welding wire is matched with a laser welding head to complete a welding task;

4. the tensioning device is arranged so that the two ends of the working control synchronous belt are stably sleeved on the driving belt wheel and the driven belt wheel, and the wire feeding mechanism is controlled to rotate through the working of the servo motor.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is an overall cross-sectional view of the present invention;

FIG. 2 is an overall front view of the present invention;

FIG. 3 is a schematic view of a wire feeder configuration of the present invention;

FIG. 4 is a schematic view of the support plate construction of the present invention;

FIG. 5 is a schematic view of a connector plate set of the present invention;

FIG. 6 is a schematic view of the motor construction of the present invention;

FIG. 7 is a schematic view of the adjustment assembly of the present invention;

FIG. 8 is a first view of the tensioner of the present invention;

FIG. 9 is a schematic view of a first cross plate structure of the present invention;

FIG. 10 is a schematic view of a structure of a biasing device of the present invention;

FIG. 11 is a second view of the tensioner of the present invention;

FIG. 12 is a second cross plate configuration of the present invention;

FIG. 13 is a third view of the tensioner of the present invention;

in the figure: 1. a servo motor; 11. a driving pulley; 12. a synchronous belt; 2. a tensioning device; 21. a first transverse plate; 211. a first sliding card slot; 212. a first rotating shaft; 22. a pressing device; 221. a pulley; 222. a connecting shaft; 223. a sliding clamping plate; 23. a second transverse plate; 231. a second sliding card slot; 232. a second rotating shaft; 3. a base; 4. a driven pulley; 5. a hollow shaft; 51. connecting a bearing; 6. a fixing plate; 7. a wire feeder; 71. a support plate; 711. a fastening groove; 72. a connecting plate group; 721. a first base plate; 722. a first vertical plate; 723. a limiting groove; 724. a second base plate; 726. a second vertical plate; 727. a buckle plate; 73. a motor; 731. a restraining post; 732. perforating; 74. an adjusting device; 741. a rotating plate; 742. a jack; 743. connecting plates; 744. a tubular motor; 745. a limiting rod; 746. a sleeve; 75. a wire feed head assembly; 8. and (5) welding a head by laser.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Example 1: referring to fig. 1 and 2: a laser welding rotary wire feeding device comprises a laser welding head 8 and a rotary wire feeding device, wherein the rotary wire feeding device is installed on the laser welding head 8 through a fixing plate 6.

Referring to FIG. 1: the rotary wire feeding device comprises a base 3, a servo motor 1 positioned above the base 3 and a wire feeding mechanism 7 positioned below the base 3, a cavity structure is arranged inside the base 3, through holes are formed in the upper side wall and the lower side wall of the base 3, the diameter of the through hole in the lower side wall is larger than that of the through hole in the upper side wall, a hollow shaft 5 is arranged at the position of the through hole, the hollow shaft 5 is sleeved on a laser welding head 8, a driven pulley 4 sleeved on the hollow shaft 5 is arranged inside the base 3, a connecting bearing 51 is arranged between the hollow shaft 5 and the driven pulley 4, an output shaft fixedly connected with a driving pulley 11 is inserted into the base 3 by the servo motor 1, the driving pulley 11 is connected with the driven pulley 4 through a synchronous belt 12, and the synchronous belt 12 is provided with a tensioning device 2 used for adjusting the tensioning degree of the synchronous belt 12 between the driving pulley 11 and the driven pulley 4.

Referring to fig. 3 and 4: the wire feeding mechanism 7 comprises a supporting plate 71, a wire feeding head assembly 75 positioned below the supporting plate 71 and an adjusting assembly used for connecting the supporting plate 71 and the wire feeding head assembly 75, the upper end of the supporting plate 71 extends into the through hole and is connected with the driven belt wheel 4, and two end corners of the lower end surface of the supporting plate 71 are provided with clamping grooves 711.

Referring to fig. 3, 4, 5, 6 and 7: the adjusting component comprises a motor 73, a connecting plate group 72 and an adjusting device 74 positioned below the motor 73, the motor 73 is placed in an inverted state, an output shaft of the motor 73 is vertically provided with a through hole 732, the adjusting device 74 comprises a rotating plate 741 and a tubular motor 744 positioned below the rotating plate 741, an insertion hole 742 is vertically arranged on the upper side surface of the rotating plate 741, the output shaft of the motor 73 is inserted into the insertion hole 742, a bolt is inserted into the rotating plate 741 and inserted into the through hole 732 through the bolt,

the rotating plate 741 is provided with a camera for positioning so as to monitor the relative position of the welding wire with respect to the laser and welding head 8 and the welding point in real time, two connecting plates 743 are symmetrically and fixedly connected below the rotating plate 741, two ends of the tubular motor 744 are respectively inserted into the two connecting plates 743, a sleeve 746 is fixedly connected above the wire feeding head assembly 75, the sleeve 746 is sleeved on the middle part of the tubular motor 744, the end surface of the sleeve 746 is provided with a pressing ring plate through spring connection, the pressing ring plate has a sidewall with a frosted layer to press the connecting plates 743, and a plurality of limit rods 745 of the tubular motor 744 are respectively installed in limit grooves of the sleeve 746 and the connecting plates 743,

the connecting plate set 72 comprises a first bottom plate 721 and a second bottom plate 724 which form a square structure and are connected through bolts, a first vertical plate 722 is fixedly connected to the positions of two end corners above the first bottom plate 721, a second vertical plate 726 is fixedly connected to the positions of two end corners above the second bottom plate 724, the motor 73 is supported above the first bottom plate 721 and the second bottom plate 724, the first vertical plate 722 and the second vertical plate 726 are in contact with the side wall of the motor 73, a limiting groove 723 is formed in the side wall of the first vertical plate 722, a limiting column 731 arranged in the limiting groove 723 is fixedly connected to the side wall of the motor 73, a snap plate 727 is fixedly connected to the upper end of the second vertical plate 726, the snap plate 727 is arranged in the snap groove 711, and the upper end of the first vertical plate 722 is connected with the supporting plate 71.

Referring to fig. 8, 9 and 10: overspeed device tensioner 2 includes first diaphragm 21 and supports and presses device 22, first diaphragm 21 is installed in the lateral wall cross bore of base 3, first slide groove 211 has been seted up to the side of going up of first diaphragm 21, be provided with first pivot 212 in the first slide groove 211, the lateral wall of first pivot 212 is provided with the helicitic texture, it includes belt pulley 221 to support and press device 22, the lower extreme passes through the bearing and connects the connecting axle 222 that inserts in belt pulley 221 and the slip cardboard 223 of installing in connecting axle 222 top, the slip cardboard 223 is installed in first slide groove 211, and first pivot 212 screw thread passes slip cardboard 223, and belt pulley 221 and hold-in range 12 contact.

The arrangement of the rotary wire feeding device facilitates the change of the installation mode of the wire feeding mechanism through the work of the rotary wire feeding device, so that the state of the wire feeding mechanism can be adjusted according to the welding requirement, and convenience is provided for meeting the requirements of multi-point and multi-direction welding machines.

The setting of base 3 is convenient for provide the support for servo motor 1 and wire feeder 7's installation, servo motor 1's setting is convenient for rotate round laser welder head 8 through its work drive wire feeder 7, so as to adjust the position of welding wire according to the welding demand, wire feeder 7's setting is convenient for pass through the state of work regulation welding wire, realize the effective regulation to welding wire spatial position with servo motor 1 cooperation simultaneously, facilitate for the welding, overspeed device tensioner 2's setting is convenient for establish on driving pulley 11 and driven pulley 4 through the stable cover in both ends of its work control hold-in range 12, so as to rotate through servo motor 1 work control wire feeder 7.

The setting of the adjusting assembly is convenient for adjusting the state of the wire feeding head assembly 75 through the work of the adjusting assembly, and then the wire state of the welding wire is adjusted after the wire feeding head assembly 75 rotates around the laser welding head 8, so that the welding wire is matched with the laser welding head 8 to complete the welding, and the setting of the wire feeding head assembly 75 is convenient for completing the welding wire conveying through the work of the wire feeding head assembly.

The setting of motor 73 is convenient for drive rotor plate 741 to rotate on the horizontal plane through its work, namely rotate on the horizontal plane to the welding wire, the setting of tubulose motor 744 is convenient for drive the welding wire through its work and rotate on vertical, realize the three-dimensional regulation to the welding wire, so that welding wire and laser welding head 8 cooperate and accomplish the welding task, the setting of support clamp ring board is convenient for offset the gravity of sending a wire head subassembly 75 with the effect of even board 743 resistance, so that send the wire head subassembly 75 after the messenger adjustment state stably to place, be convenient for adjust the state of sending a wire head subassembly 75 under the effect of tubulose motor 744 simultaneously, the setting of gag lever 745 and spacing groove is convenient for make the both ends and the middle part of tubulose motor 744 keep relatively static in even board 743 and sleeve 746 respectively, be convenient for adjusting the state of sending a wire head subassembly 75, the setting of first bottom plate 721 and second bottom plate 724 is convenient for providing the support for the installation of motor 73, and provide convenience for quick assembly and disassembly motor 73.

The setting of first diaphragm 21 is convenient for provide the support for the installation that supports and press device 22, and the setting that supports and press device 22 is convenient for support and press the lateral wall of hold-in range 12, makes the lateral wall of hold-in range 12 remove and tighten, does not influence the rotation of hold-in range 12 simultaneously, and the setting of first pivot 212 is convenient for rotate under the effect of external force, and control slip cardboard 223 removes in first slip draw-in groove 211, facilitates for the position that changes belt pulley 221.

Firstly, the staff controls the tensioning device 2 to adjust the tensioning degree of the synchronous belt 12, the work of the wire feeding mechanism 7 driven by the servo motor 1 is facilitated, when the laser welding head 8 moves to a specified position and needs to feed wires, the control system sends an instruction to the rotary wire feeding device, the driven belt wheel 4 is driven to rotate through the work of the servo motor 1, the wire feeding mechanism 7 is further driven to rotate to a corresponding position around the laser welding head 8, the state of the wire feeding head assembly 75 is changed through the work of the motor 73 and the tubular motor 744, the state of the welding wires is adjusted to be right opposite to the welding position, and the welding task is effectively completed.

Example 2: referring to fig. 10, 11, 12 and 13: the device provided by the embodiment of the present invention has the same implementation principle and the same technical effects as those of the embodiment 1, and for brief description, corresponding contents in the embodiment 1 can be referred to for the points not mentioned in the embodiment.

The tensioning device 2 comprises a second transverse plate 23 and two pressing devices 22, the second transverse plate 23 is installed in an upper side wall transverse hole of the base 3, a second sliding clamping groove 231 is formed in the upper side face of the second transverse plate 23, a second rotating shaft 232 is arranged in the second sliding clamping groove 231, two thread structures are symmetrically arranged on the side wall of the second rotating shaft 232, the pressing devices 22 comprise belt pulleys 221, the lower end of each sliding clamping plate is connected with a connecting shaft 222 inserted into the corresponding belt pulley 221 through a bearing and a sliding clamping plate 223 installed above the corresponding connecting shaft 222, the two sliding clamping plates 223 are installed in the first sliding clamping groove 211, two ends of the second rotating shaft 232 penetrate through the two sliding clamping plates 223 in a threaded mode respectively, and the two belt pulleys 221 are in contact with two side walls of the synchronous belt 12 respectively.

The setting of second diaphragm 23 is convenient for provide the support for two installation and removal that support and press device 22, and two setting that support and press device 22 are convenient for support the both sides wall of pressing hold-in range 12 simultaneously to remove the effective degree of tightening that changes hold-in range 12 through the short distance of hold-in range 12.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a rotatory wire drive feed unit of laser welding, includes laser welding head (8), its characterized in that: still include and install the rotatory wire drive feed unit on laser welder head (8) through fixed plate (6), rotatory wire drive feed unit includes base (3), is located servo motor (1) of base (3) top and is located wire feeder (7) of base (3) below, base (3) cover is established on laser welder head (8) and inside sets up to the cavity structure, base (3) inside is provided with driven pulley (4) of cover on laser welder head (8), the upper end and the driven pulley (4) of wire feeder (7) are connected, servo motor (1) drive driven pulley (4) rotate, wire feeder (7) include backup pad (71), are located the wire feeder subassembly (75) of backup pad (71) below and are used for connecting backup pad (71) and wire feeder subassembly (75) and adjust the adjusting part of wire feeder subassembly (75) state.

2. A laser welding rotary wire feeder according to claim 1, characterized in that the adjusting assembly comprises a motor (73), a connecting plate group (72) and an adjusting device (74) positioned below the motor (73), the motor (73) is placed in an inverted state, the connecting plate group (72) wraps the motor (73) and is connected with the upper end of the connecting plate group (72) and the supporting plate (71), and the adjusting device (74) is connected with an output shaft of the motor (73).

3. The rotary wire feeder for laser welding according to claim 2, wherein the adjusting device (74) comprises a rotating plate (741) and a tubular motor (744) located below the rotating plate (741), two connecting plates (743) are symmetrically and fixedly connected below the rotating plate (741), two ends of the tubular motor (744) are respectively inserted into the two connecting plates (743), a sleeve (746) is fixedly connected above the wire feeder assembly (75), the sleeve (746) is sleeved on the middle of the tubular motor (744), and a plurality of limiting rods (745) of the tubular motor (744) are respectively installed in limiting grooves of the sleeve (746) and the connecting plates (743).

4. The rotary wire feeder for laser welding according to claim 3, wherein an insertion hole (742) is vertically formed in an upper side surface of the rotating plate (741), an output shaft of the motor (73) is vertically formed with a through hole (732), the output shaft of the motor (73) is inserted into the insertion hole (742), and a bolt is threadedly inserted into the rotating plate (741) and into the through hole (732).

5. The laser welding rotary wire feeding device according to claim 2, wherein the connecting plate set (72) comprises a first bottom plate (721) and a second bottom plate (724) which are formed into a square structure and connected through bolts, a first vertical plate (722) is fixedly connected at two end corner positions above the first bottom plate (721), a second vertical plate (726) is fixedly connected at two end corners above the second bottom plate (724), the motor (73) is supported above the first bottom plate (721) and the second bottom plate (724), the first vertical plate (722) and the second vertical plate (726) are in contact with a side wall of the motor (73), a limiting groove (723) is formed in the side wall of the first vertical plate (722), and a limiting column (731) installed in the limiting groove (723) is fixedly connected to the side wall of the motor (73).

6. The rotary wire feeding device for laser welding according to claim 5, wherein a clamping plate (727) is fixedly connected to an upper end of the second vertical plate (726), clamping grooves (711) are formed in two corners of a lower end face of the support plate (71), the clamping plate (727) is installed in the clamping grooves (711), and an upper end of the first vertical plate (722) is connected with the support plate (71).

7. A laser welding rotary wire feeder according to claim 1, characterized in that the driven pulley (4) is internally provided with a hollow shaft (5) fixedly mounted on the laser welding head (8), and the gap between the hollow shaft (5) and the driven pulley (4) is provided with a connecting bearing (51).

8. The laser welding rotary wire feeding device according to claim 1, wherein the output shaft of the servo motor (1) inserted into the base (3) is fixedly connected with a driving pulley (11), the driving pulley (11) is connected with a driven pulley (4) through a synchronous belt (12), and the synchronous belt (12) is provided with a tensioning device (2) for adjusting the tensioning degree of the synchronous belt (12) between the driving pulley (11) and the driven pulley (4).

9. The rotary wire feeding device for laser welding according to claim 8, wherein the tensioning device (2) comprises a first transverse plate (21) and a pressing device (22), a first sliding clamping groove (211) is formed in an upper side surface of the first transverse plate (21), a first rotating shaft (212) is arranged in the first sliding clamping groove (211), a threaded structure is arranged on an outer side wall of the first rotating shaft (212), the pressing device (22) comprises a belt pulley (221), a connecting shaft (222) with a lower end inserted into the belt pulley (221) through a bearing connection, and a sliding clamping plate (223) arranged above the connecting shaft (222), the sliding clamping plate (223) is arranged in the first sliding clamping groove (211), the first rotating shaft (212) penetrates through the sliding clamping plate (223) in a threaded manner, and the belt pulley (221) is in contact with the synchronous belt (12).

10. The rotary wire feeding device for laser welding according to claim 8, wherein the tensioning device (2) comprises a second transverse plate (23) and two pressing devices (22), a second sliding clamping groove (231) is formed in the upper side surface of the second transverse plate (23), a second rotating shaft (232) is arranged in the second sliding clamping groove (231), two thread structures are symmetrically arranged on the side wall of the second rotating shaft (232), the pressing devices (22) comprise a belt pulley (221), a connecting shaft (222) with the lower end inserted into the belt pulley (221) through a bearing connection, and sliding clamping plates (223) arranged above the connecting shaft (222), the two sliding clamping plates (223) are arranged in the first sliding clamping groove (211), two ends of the second rotating shaft (232) respectively penetrate through the two sliding clamping plates (223) in a threaded manner, and the two belt pulleys (221) respectively contact with two side walls of the synchronous belt (12).