CN112372181A

CN112372181A - Welding method adopting intelligent welding robot arm

Info

Publication number: CN112372181A
Application number: CN202011084518.XA
Authority: CN
Inventors: 孙莉莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2021-02-19
Also published as: CN108620775A; CN108620775B

Abstract

The invention relates to the field of intelligent welding robots, and discloses a welding method adopting an intelligent welding robot arm. This intelligence welding robot arm, when driving servo motor through the power and starting, the electro-magnet circular telegram produces suction, utilize the size of slide rheostat control suction, thereby adjust iron sheet displacement, make the protection casing remove to the weldment work that does not disturb the soldered connection, the spark that produces when utilizing the isolated welding of protection casing simultaneously, the high temperature spark who splashes out in a large number also often "burns" the arm and the pipeline of robot when having avoided current welding robot welding, cause the trouble, reduce work efficiency, and the service life is prolonged.

Description

Welding method adopting intelligent welding robot arm

The application is a divisional application of a patent with the application date of 2018, 4, 27 and the application number of 201810391531.6 and the name of 'an intelligent welding robot arm'.

Technical Field

The invention relates to the field of intelligent welding robots, in particular to a welding method adopting an intelligent welding robot arm.

Background

The welding robot is an industrial robot for performing automatic welding. The welding robot is widely applied to a continuously repeated and monotonous long-time operation scene or a high-risk severe environment welding operation scene in welding operation, and has the characteristics of high productivity, high quality, high stability and the like.

However, the arm and the pipeline of the robot are often "burned" by a large amount of high-temperature sparks splashed out during welding of the existing welding robot, causing failure, reducing the working efficiency, and reducing the service life, and the welding wire feeding of the welding robot only adopts the reservation of the welding wire outside, easily curling and winding when the welding head rotates continuously for many times, thereby bending the welding wire, inconvenient welding of the welding head, thereby reducing the welding quality of the automatic welding machine, and because the welding wire is always conveyed inside the protection tube, when the welding head rotates, the friction force generated by the contact between the welding wire and the protection tube is large, thereby making the welding uneven, thereby reducing the welding effect.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a welding method adopting an intelligent welding robot arm, which has the advantages of spark splashing prevention, convenient welding wire reservation, small friction force between the welding wire and a protective tube and the like, solves the problems that the arm and the pipeline of the robot are often burnt by high-temperature sparks splashed out in large amount when the existing welding robot is used for welding, thereby causing faults, reducing the working efficiency and shortening the service life, and the welding wire feeding of the welding robot only adopts the reserved welding wire outside, thereby being easy to curl and wind when the welding head continuously rotates for many times, causing the welding wire to be bent and inconvenient for welding of the welding head, thereby reducing the welding quality of an automatic welding machine, and because the welding wire is always conveyed inside the protective tube, the friction force generated by the contact between the welding wire and the protective tube when the welding head rotates is large, thereby causing uneven welding, thereby reducing the problem of welding effect.

(II) technical scheme

In order to achieve the purposes of preventing spark splashing, facilitating welding wire reservation and reducing friction force between the welding wire and the protection pipe, the invention provides the following technical scheme: a welding method adopting an intelligent welding robot arm comprises a supporting table, wherein a rotary joint is fixedly arranged on one side of the top of the supporting table, a supporting column is movably sleeved in the middle of the rotary joint, a lower support is movably sleeved on one side of the top of the supporting column, a rotary joint is movably sleeved on the top of the lower support, an upper support positioned on one side of the lower support is movably sleeved on the rotary joint, a fixed shaft is fixedly sleeved at one end, away from the rotary joint, of the upper support, a fixed support is movably sleeved in the middle of the fixed shaft, a rotary support plate is movably sleeved at one end, away from the fixed shaft, of the fixed support, a welding head is fixedly arranged in the middle of the side surface of the rotary support plate, a linkage device is fixedly arranged at the top of the side surface of the rotary support plate, and a connecting, the bottom of the connecting block is fixedly connected with a protective cover, the other end of the linkage device is fixedly connected with an iron sheet positioned at the other side of the rotating support plate, the other side of the rotating support plate is fixedly connected with a positioning rod positioned above the fixed support, one end of the positioning rod far away from the rotating support plate is fixedly connected with a positioning shaft, the top of the side surface of the positioning shaft is fixedly provided with an electromagnet, the top end of the supporting column is movably sleeved with a wire feeding wheel positioned at one side of the lower support, a welding wire is wound on the wire feeding wheel, one end of the welding wire far away from the wire feeding wheel sequentially penetrates through a buffer device and a box body and is movably sleeved with a welding head, the buffer device is fixedly arranged at the side surface of a rotating joint, the box body is fixedly arranged at one side of the top of the upper support, the top and the bottom of, an upper rotating shaft is movably sleeved at the top of an inner cavity of the wire feeding box, an upper roller is fixedly sleeved at one end of the upper rotating shaft, an upper gear positioned on one side of the upper roller is fixedly sleeved on the upper rotating shaft, a lower rotating shaft is movably sleeved at the bottom of the inner cavity of the wire feeding box, a lower roller is fixedly sleeved at one end of the lower rotating shaft, a lower gear positioned on one side of the lower roller is fixedly sleeved on the lower rotating shaft, the outer edge of the lower gear is meshed with the outer edge of the upper gear, a motor box is fixedly connected to the top of the back of the wire feeding box, a servo motor is fixedly installed inside the motor box, an output shaft of the servo motor extends into the wire feeding box and is fixedly connected with the upper rotating shaft, a cleaning brush is fixedly installed on the side wall of the inner cavity of the box body, the cleaning brush is movably sleeved outside a welding wire, one end of the elastic guide pipe is fixedly connected with one end of the welding head, and the elastic guide pipe is movably sleeved outside the welding wire.

Preferably, the linkage device comprises a limiting pipe, the side face of the limiting pipe is fixedly connected with the side face of the rotary support plate, a driven plate is movably sleeved inside the limiting pipe, a linkage shaft is fixedly sleeved in the middle of the driven plate, one end of the linkage shaft extends to the outside of the limiting pipe and is fixedly connected with the connecting block, the other end of the linkage shaft penetrates through the rotary support plate and is fixedly connected with the side face of the iron sheet, a first spring is fixedly connected to the side face of the driven plate, and one end, far away from the driven plate, of the first spring is fixedly connected with the inner wall of the limiting pipe.

Preferably, the first spring is movably sleeved on the linkage shaft, and the elastic force of the first spring is smaller than the adsorption force of the electromagnet in the power-on state.

Preferably, the buffer device includes the limiting plate, limiting plate fixed mounting is on the revolute joint, the quantity of limiting plate is two, and two limiting plates are symmetrical with revolute joint's axle center, the spout has been seted up at the middle part of limiting plate, the bottom fixedly connected with second spring of spout, the one end fixedly connected with of second spring removes the axle, the middle part movable sleeve that removes the axle is equipped with the supporting wheel that is located between two limiting plates.

Preferably, the adjusting device comprises a positioning block, a sliding shaft is fixedly connected to the bottom of the side face of the positioning block, one end, far away from the positioning block, of the sliding shaft is fixedly connected to the inner wall of the box body, a movable sliding block is movably sleeved on the sliding shaft, the bottom of the movable sliding block is fixedly connected to the top of the wire feeding box, a third spring is fixedly connected to the side face of the movable sliding block, the third spring is movably sleeved on the sliding shaft, and one end of the third spring is fixedly connected to the inner wall of the box body.

Preferably, the protective cover is an annular cover, and the inner diameter of the protective cover is larger than the outer diameter of the welding head.

Preferably, the distance between the iron sheet and the electromagnet is equal to the distance between the connecting block and the limiting pipe, and the iron sheet is in contact with the side face of the rotating support plate.

Preferably, the upper roller is located right above the lower roller, the size and the shape of the upper roller are the same as those of the lower roller, and the welding wire is movably connected between the upper roller and the lower roller.

Preferably, the output end of the electromagnet is connected with the input end of the power supply, the output end of the power supply is connected with the input end of the switch, the output end of the switch is electrically connected with the input end of the slide rheostat, the output end of the slide rheostat is electrically connected with the input end of the electromagnet, the output end of the switch is electrically connected with the input end of the servo motor, and the output end of the servo motor is electrically connected with the input end of the power supply.

(III) advantageous effects

Compared with the prior art, the invention provides a welding method adopting an intelligent welding robot arm, which has the following beneficial effects:

1. this intelligence welding robot arm, when driving servo motor through the power and starting, the electro-magnet circular telegram produces suction, utilize the size of slide rheostat control suction, thereby adjust iron sheet displacement, make the protection casing remove to the weldment work that does not disturb the soldered connection, the spark that produces when utilizing the isolated welding of protection casing simultaneously, the high temperature spark who splashes out in a large number also often "burns" the arm and the pipeline of robot when having avoided current welding robot welding, cause the trouble, reduce work efficiency, and the service life is prolonged.

2. This intelligence welding robot arm, elasticity through the second spring, make the supporting wheel withstand the welding wire and reserve, when the soldered connection is rotatory, the welding wire tightens up, it removes to drive the supporting wheel, make it to reserve the welding wire and be convenient for the soldered connection and rotate the during operation and carry the welding wire, utilize the elasticity of third spring simultaneously, make send a box to remove along with the soldered connection is rotatory, it is even to ensure the speed of sending a silk, the welding wire feed of having avoided welding robot only adopts the reservation of welding wire outside, curl and the winding when the many times of continuous rotations of bonding tool easily, thereby make the welding wire crooked, the welding of inconvenient bonding tool.

3. This intelligence welding robot arm in the box body is directly inserted through the welding wire, has reduced the area of contact with the protection tube to reduce the friction, utilize the clearance brush to clear up the welding wire comprehensively simultaneously, ensure that the welding wire is clean, avoided the welding wire to carry in the inside of protection tube all the time, make the bonding tool when rotating, the contact between welding wire and the protection tube and the frictional force that produces is great, make the welding inhomogeneous, thereby reduced the welding effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of a structural cassette of the present invention;

FIG. 3 is a side cross-sectional view of the filament feeding box of the present invention;

FIG. 4 is a schematic view of a structural linkage of the present invention;

FIG. 5 is a schematic view of a structural cushioning device of the present invention;

FIG. 6 is a schematic view of a structural adjustment device of the present invention;

fig. 7 is a schematic diagram of the circuit connection of the electromagnet 17 according to the present invention.

In the figure: 1 supporting table, 2 rotary joints, 3 supporting columns, 4 lower supports, 5 rotary joints, 6 upper supports, 7 fixing shafts, 8 fixing supports, 9 rotary supporting plates, 10 welding heads, 11 linkage devices, 111 limiting pipes, 112 driven plates, 113 linkage shafts, 114 first springs, 12 connecting blocks, 13 protective covers, 14 iron sheets, 15 positioning rods, 16 positioning shafts, 17 electromagnets, 18 wire feeding wheels, 19 welding wires, 20 buffer devices and 201 limiting plates, 202 sliding chutes, 203 second springs, 204 moving shafts, 205 supporting wheels, 21 box bodies, 22 adjusting devices, 221 positioning blocks, 222 sliding shafts, 223 moving sliders, 224 third springs, 23 wire feeding boxes, 24 upper rotating shafts, 25 upper rolling wheels, 26 upper gear wheels, 27 lower rotating shafts, 28 lower rolling wheels, 29 lower gear wheels, 30 motor boxes, 31 servo motors, 32 cleaning brushes, 33 elastic conduits, 34 power supplies, 35 switches and 36 sliding rheostats.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution, a welding method using an intelligent welding robot arm, comprising a supporting table 1, a rotary joint 2 fixedly installed on one side of the top of the supporting table 1, a supporting column 3 movably sleeved in the middle of the rotary joint 2, a lower bracket 4 movably sleeved on one side of the top of the supporting column 3, a rotary joint 5 movably sleeved on the top of the lower bracket 4, an upper bracket 6 positioned on one side of the lower bracket 4 movably sleeved on the rotary joint 5, a fixed shaft 7 fixedly sleeved on one end of the upper bracket 6 far away from the rotary joint 5, a fixed bracket 8 movably sleeved in the middle of the fixed shaft 7, a rotary support plate 9 movably sleeved on one end of the fixed bracket 8 far away from the fixed shaft 7, a welding head 10 fixedly installed in the middle of the side of the rotary support plate 9, a linkage device 11 fixedly installed on the top of, the linkage device 11 comprises a limiting pipe 111, the side surface of the limiting pipe 111 is fixedly connected with the side surface of the rotating support plate 9, a driven plate 112 is movably sleeved inside the limiting pipe 111, a linkage shaft 113 is fixedly sleeved in the middle of the driven plate 112, one end of the linkage shaft 113 extends to the outside of the limiting pipe 111 and is fixedly connected with the connecting block 12, the other end of the linkage shaft 113 penetrates through the rotating support plate 9 and is fixedly connected with the side surface of the iron sheet 14, a first spring 114 is fixedly connected with the side surface of the driven plate 112, the first spring 114 is movably sleeved on the linkage shaft 113, the elastic force of the first spring 114 is smaller than the adsorption force of the electromagnet 17 in the power-on state, so that the electromagnet 17 is powered on and can adsorb the iron sheet 14, the iron sheet 14 can drive the linkage shaft 113 to move, the position of the protective cover 13 at the welding head 10 can be adjusted, one end of the first spring 114 far away from the driven, the protection cover 13 is always positioned at one end of the welding head 10 under the normal state by utilizing the elastic force action of the first spring 114, when the welding head 10 works, the protection cover 13 is adjusted at the position of the welding head 10 in real time by matching with the suction force of the electromagnet 17 to the iron sheet 14 under the electrified state, so that the welding work of the welding head 10 is not interfered while spark splashing is avoided, one end of the linkage device 11, which is far away from the rotating support plate 9, is fixedly connected with the connecting block 12, the bottom of the connecting block 12 is fixedly connected with the protection cover 13, the protection cover 13 is an annular cover, the inner diameter of the protection cover 13 is larger than the outer diameter of the welding head 10, high-temperature sparks generated when the welding head 10 works are blocked by utilizing the protection cover 13, the problem that the high-temperature sparks often burn the arms and the pipelines of the robot is avoided, the faults are caused, the working efficiency is, the distance between the iron sheet 14 and the electromagnet 17 is equal to the distance between the connecting block 12 and the limiting tube 111, the iron sheet 14 contacts with the side surface of the rotating support plate 9, the other side of the rotating support plate 9 is fixedly connected with a positioning rod 15 positioned above the fixed support 8, one end of the positioning rod 15 far away from the rotating support plate 9 is fixedly connected with a positioning shaft 16, the top of the side surface of the positioning shaft 16 is fixedly provided with the electromagnet 17, the output end of the electromagnet 17 is connected with the input end point of a power supply 34, the output end of the power supply 34 is connected with the input end point of a switch 35, the output end of the switch 35 is electrically connected with the input end point of a slide rheostat 36, the output end of the slide rheostat 36 is electrically connected with the input end of the electromagnet 17, the output end of the switch 35 is electrically connected with the input, the electromagnet 17 is electrified to generate suction force to drive the iron sheet 14 to move, the sliding rheostat 36 is utilized to adjust the resistance, so as to adjust the suction force of the electromagnet 17, and further control the position of the protective cover 13, so as not to interfere with the work of the welding head 10, the top end of the support column 3 is movably sleeved with the wire feeding wheel 18 positioned on one side of the lower support 4, the wire feeding wheel 18 is wound with the welding wire 19, one end of the welding wire 19 far away from the wire feeding wheel 18 sequentially penetrates through the buffer device 20 and the box body 21 and is movably sleeved with the welding head 10, the buffer device 20 is fixedly arranged on the side surface of the rotating joint 5, the buffer device 20 comprises two limiting plates 201, the two limiting plates 201 are fixedly arranged on the rotating joint 5, the two limiting plates 201 are symmetrical about the axis of the rotating joint 5, the middle part of the limiting plates 201 is provided with a sliding groove 202, the bottom of the sliding groove, the middle part of the movable shaft 204 is movably sleeved with a supporting wheel 205 positioned between the two limiting plates 201, the supporting wheel 205 is enabled to prop against the welding wire 19 for reservation by utilizing the elastic force of the second spring 204, when the welding head 10 rotates, the welding wire 19 is tightened to drive the supporting wheel 205 to move, so that the reserved welding wire 19 is convenient for the welding head 10 to convey welding wires when the welding head 10 rotates to work, the box body 21 is fixedly arranged at one side of the top part of the upper bracket 6, the top part and the bottom part of the inner cavity of the box body 21 are both fixedly provided with an adjusting device 22, the adjusting device 22 comprises a positioning block 221, the bottom part of the side surface of the positioning block 221 is fixedly connected with a sliding shaft 222, one end of the sliding shaft 222, far away from the positioning block 221, is fixedly connected with the inner wall of the box body 21, the movable shaft 222 is movably sleeved with a movable, the third spring 224 is movably sleeved on the sliding shaft 222, one end of the third spring 224 is fixedly connected with the inner wall of the box body 21, the elastic force of the third spring 224 is utilized to enable the wire feeding box 21 to move along with the rotation of the welding head 10, the wire feeding speed is ensured to be uniform, the welding quality is high, the same wire feeding box 23 is fixedly connected between the two adjusting devices 22, the upper rotating shaft 24 is movably sleeved at the top of the inner cavity of the wire feeding box 23, the upper roller 25 is fixedly sleeved at one end of the upper rotating shaft 24, the upper roller 25 is positioned right above the lower roller 28, the size and the shape of the upper roller 25 are the same as those of the lower roller 28, the welding wire 19 is movably connected between the upper roller 25 and the lower roller 28, the upper roller 25 and the lower roller 28 are mutually matched to extrude and convey the welding wire 19, the upper gear 26 positioned at one side of the upper roller 25 is, the bottom of the inner cavity of the wire feeding box 23 is movably sleeved with a lower rotating shaft 27, one end of the lower rotating shaft 27 is fixedly sleeved with a lower roller 28, the lower rotating shaft 27 is fixedly sleeved with a lower gear 29 positioned on one side of the lower roller 28, the outer edge of the lower gear 29 is meshed with the outer edge of the upper gear 26, the top of the back of the wire feeding box 23 is fixedly connected with a motor box 30, a servo motor 31 is fixedly installed inside the motor box 30, the output shaft of the servo motor 31 extends into the wire feeding box 23 and is fixedly connected with the upper rotating shaft 24, the side wall of the inner cavity of the box body 21 is fixedly provided with a cleaning brush 32, the cleaning brush 32 is movably sleeved outside the welding wire 19, the side of the box body 21 is fixedly connected with an elastic guide pipe 33, one end of the elastic guide pipe 33 is fixedly connected with one end of the.

When the welding head 10 works, firstly, the welding wire 19 bypasses the supporting wheel 205 and the upper roller 25 according to words and passes through the welding head 10, then, when the welding head works, the servo motor 31 is driven to start through the starting power supply 34, meanwhile, the electromagnet 17 is powered on to generate suction, the sliding rheostat 36 is used for controlling the size of the suction, so that the moving distance of the iron sheet 14 is adjusted, the protective cover 13 is moved to the position where the welding head 10 is not interfered with, meanwhile, the protective cover 13 is used for isolating sparks generated during welding, finally, when the welding head 10 works and rotates, the welding wire 19 is tightened to drive the supporting wheel 205 to move, the welding wire 19 is reserved to be convenient for the welding head 10 to convey welding wires during rotation work, meanwhile, the wire feeding box 21 is moved along with the rotation of the welding head 10 by the elasticity of the.

To sum up, the intelligent welding robot arm drives the servo motor 31 to start through the power supply 34, meanwhile, the electromagnet 17 is electrified to generate suction, the sliding rheostat 36 is used for controlling the size of the suction, so that the moving distance of the iron sheet 14 is adjusted, the protective cover 13 is moved to a position where the welding work of the welding head 10 is not interfered, meanwhile, the protective cover 13 is used for isolating sparks generated during welding, and the problem that the arm and the pipeline of the robot are often burnt by a large amount of high-temperature sparks splashed during welding of the existing welding robot is avoided, so that the work efficiency is reduced, and the service life is shortened; the supporting wheel 205 is enabled to prop against the welding wire 19 for reservation through the elastic force of the second spring 204, when the welding head 10 rotates, the welding wire 19 is tightened to drive the supporting wheel 205 to move, so that the reserved welding wire 19 is convenient for the welding head 10 to rotate and convey welding wires when working, meanwhile, the wire feeding box 21 is enabled to move along with the rotation of the welding head 10 by utilizing the elastic force of the third spring 224, the uniform wire feeding speed is ensured, the welding wire feeding of a welding robot is avoided, the welding wire is prevented from being reserved outside only by adopting the welding wire, and the welding wire is easy to curl and wind when the welding head continuously rotates for multiple times, so that the welding wire is bent and inconvenient for; the welding wire 19 is directly connected into the box body 21, so that the contact area with the protective tube is reduced, friction is reduced, meanwhile, the cleaning brush 32 is used for comprehensively cleaning the welding wire 19, the cleanness of the welding wire 19 is ensured, the welding wire is prevented from being conveyed inside the protective tube all the time, and when the welding head rotates, the friction force generated by the contact between the welding wire and the protective tube is large, so that the welding is uneven, and the welding effect is reduced; the problem of a large amount of high temperature sparks that splash out when current welding robot welds also often "burn" the arm and the pipeline of robot, cause the trouble, reduce work efficiency, reduce life, and, welding robot's welding wire feed only adopts the reservation of welding wire outside, curl and twine easily when the bonding tool rotates in succession many times, thereby make the welding wire crooked, the welding of inconvenient bonding tool, thereby make the welding quality of automatic welding machine reduce, and because the welding wire is carried in the inside of protective tube all the time, make the bonding tool when rotating, the frictional force that produces of contact between welding wire and the protective tube is great, make the welding inhomogeneous, thereby the welding effect has been reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. A welding method adopting an intelligent welding robot arm is characterized in that: firstly, the welding wire (19) is wound around a supporting wheel (205) and an upper roller (25) according to words and passes through a welding head (10); the intelligent welding robot arm comprises a supporting table (1), wherein a rotary joint (2) is fixedly arranged on one side of the top of the supporting table (1), a supporting column (3) is sleeved at the middle part of the rotary joint (2), a lower support (4) is sleeved at one side of the top of the supporting column (3), a rotary joint (5) is sleeved at the top end of the lower support (4), an upper support (6) located on one side of the lower support (4) is sleeved at the upper part of the rotary joint (5), a fixed shaft (7) is fixedly sleeved at one end, away from the rotary joint (5), of the upper support (6), a fixed support (8) is sleeved at the middle part of the fixed shaft (7), a rotary support plate (9) is sleeved at one end, away from the fixed shaft (7), of the fixed support (8), and a welding head (10) is fixedly arranged at the middle part of the side surface of the rotary, the top of the side surface of the rotary support plate (9) is fixedly provided with a linkage device (11), one end of the linkage device (11) far away from the rotary support plate (9) is fixedly connected with a connecting block (12), the bottom of the connecting block (12) is fixedly connected with a protective cover (13), the other end of the linkage device (11) is fixedly connected with an iron sheet (14) positioned at the other side of the rotary support plate (9), the other side of the rotary support plate (9) is fixedly connected with a positioning rod (15) positioned above the fixed support (8), one end of the positioning rod (15) far away from the rotary support plate (9) is fixedly connected with a positioning shaft (16), the top of the side surface of the positioning shaft (16) is fixedly provided with an electromagnet (17), the top end of the support column (3) is movably sleeved with a wire feeding wheel (18) positioned at one side of the lower support (4), and, one end, far away from the wire feeding wheel (18), of the welding wire (19) sequentially penetrates through a buffer device (20) and a box body (21) and is movably sleeved with a welding head (10), the buffer device (20) is fixedly installed on the side face of a rotating joint (5), the box body (21) is fixedly installed on one side of the top of an upper support (6), adjusting devices (22) are fixedly installed on the top and the bottom of the inner cavity of the box body (21), a same wire feeding box (23) is fixedly connected between the two adjusting devices (22), an upper rotating shaft (24) is movably sleeved on the top of the inner cavity of the wire feeding box (23), an upper roller (25) is fixedly sleeved at one end of the upper rotating shaft (24), an upper gear (26) located on one side of the upper roller (25) is fixedly sleeved on the upper rotating shaft (24), a lower rotating shaft (27) is movably sleeved on the bottom of the inner cavity of the, the fixed cover of one end of lower pivot (27) is equipped with lower gyro wheel (28), fixed cover is equipped with the lower gear (29) that is located lower gyro wheel (28) one side on lower pivot (27), the outer edge of lower gear (29) and the outer edge meshing of upper gear (26), send the top fixedly connected with motor box (30) at the silk box (23) back, the inside fixed mounting of motor box (30) has servo motor (31), the output shaft of servo motor (31) extends to the inside of sending silk box (23) and with upper pivot (24) fixed connection, the lateral wall fixed mounting of box body (21) inner chamber has cleaning brush (32), cleaning brush (32) activity suit is in the outside of welding silk (19), the side fixed connection of box body (21) has elastic conduit (33), the one end and the one end fixed connection of soldered connection (10) of elastic conduit (33), the elastic conduit (33) is movably sleeved outside the welding wire (19); when the welding head (10) works, the servo motor (31) is driven to start by the starting power supply (34), meanwhile, the electromagnet (17) is electrified to generate suction, the size of the suction is controlled by the sliding rheostat (36), so that the moving distance of the iron sheet (14) is adjusted, the protective cover (13) is moved to the position where the welding work of the welding head (10) is not interfered, meanwhile, sparks generated during welding are isolated by the protective cover (13), finally, when the welding head (10) works and rotates, the welding wire (19) is tightened, the supporting wheel (205) is driven to move, the welding wire (19) is reserved to facilitate the welding head (10) to convey the welding wire during rotating work, meanwhile, the elastic force of the third spring (224) is utilized, the wire feeding box (21) moves along with the rotation of the welding head (10), and the wire feeding.

2. The intelligent welding robot arm of claim 1, wherein: the linkage device (11) comprises a limiting pipe (111), the side face of the limiting pipe (111) is fixedly connected with the side face of the rotating support plate (9), a driven plate (112) is movably sleeved inside the limiting pipe (111), a linkage shaft (113) is fixedly sleeved in the middle of the driven plate (112), one end of the linkage shaft (113) extends to the outside of the limiting pipe (111) and is fixedly connected with the connecting block (12), the other end of the linkage shaft (113) penetrates through the rotating support plate (9) and is fixedly connected with the side face of the iron sheet (14), a first spring (114) is fixedly connected to the side face of the driven plate (112), and one end, far away from the driven plate (112), of the first spring (114 is fixedly connected with the inner wall of the limiting pipe (111).

3. An intelligent welding robot arm as recited in claim 2, wherein: the first spring (114) is movably sleeved on the linkage shaft (113), and the elastic force of the first spring (114) is smaller than the adsorption force of the electromagnet (17) in the electrified state.

4. The intelligent welding robot arm of claim 1, wherein: buffer (20) include limiting plate (201), limiting plate (201) fixed mounting is on rotation joint (5), the quantity of limiting plate (201) is two, and two limiting plate (201) are in order to rotate the axis symmetry of joint (5), spout (202) have been seted up at the middle part of limiting plate (201), the bottom fixedly connected with second spring (203) of spout (202), the one end fixedly connected with of second spring (203) removes axle (204), the middle part movable sleeve of removing axle (204) is equipped with supporting wheel (205) that is located between two limiting plate (201).

5. The intelligent welding robot arm of claim 1, wherein: adjusting device (22) includes locating piece (221), bottom fixedly connected with slide shaft (222) of locating piece (221) side, the one end that locating piece (221) was kept away from in slide shaft (222) and the inner wall fixed connection of box body (21), movable sleeve is equipped with removal slider (223) on slide shaft (222), the bottom of removing slider (223) and the top fixed connection who send silk box (23), the side fixedly connected with third spring (224) of removal slider (223), third spring (224) activity suit is on slide shaft (222), and the inner wall fixed connection of the one end of third spring (224) and box body (21).

6. The intelligent welding robot arm of claim 1, wherein: the protective cover (13) is an annular cover, and the inner diameter of the protective cover (13) is larger than the outer diameter of the welding head (10).

7. An intelligent welding robot arm as recited in claim 2, wherein: the distance between the iron sheet (14) and the electromagnet (17) is equal to the distance between the connecting block (12) and the limiting pipe (111), and the iron sheet (14) is in contact with the side face of the rotating support plate (9).

8. The intelligent welding robot arm of claim 1, wherein: the upper roller (25) is located right above the lower roller (28), the size and the shape of the upper roller (25) are the same as those of the lower roller (28), and a welding wire (19) is movably connected between the upper roller (25) and the lower roller (28).

9. The intelligent welding robot arm of claim 1, wherein: the output end of the electromagnet (17) is connected with the input end of a power supply (34), the output end of the power supply (34) is connected with the input end of a switch (35), the output end of the switch (35) is electrically connected with the input end of a slide rheostat (36), the output end of the slide rheostat (36) is electrically connected with the input end of the electromagnet (17), the output end of the switch (35) is electrically connected with the input end of a servo motor (31), and the output end of the servo motor (31) is electrically connected with the input end of the power supply (34).