Automatic robot welding equipment and method for copper materials

Abstract

The invention discloses automatic robot welding equipment and method for copper materials, and relates to the technical field of welding, the automatic robot welding equipment comprises a welding bin, a calibration connecting piece is installed on a positioning plate, a butt joint locking unit is arranged at one end of a welding gun body, and the welding gun body is connected with a welding head through the butt joint locking unit. According to the welding gun, a calibration connecting piece is arranged, a limiting ring makes contact with a workpiece through extension of a telescopic air cylinder, a shifting rotating rod is rotated, a second transmission straight gear drives a first transmission straight gear to rotate through rotation of the shifting rotating rod, and therefore the distance from a positioning plate to one end of the welding gun body is adjusted; therefore, fine adjustment of the position of the focus point is achieved, the adjusting efficiency of the position of the focus point of the laser beam is improved, the limiting ring moves to the outer side of the welding head through contraction of the telescopic air cylinder, the bottom end of the air guide pipe is blocked, the piston rod can be prevented from moving relative to the piston barrel, and the welding stability is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a copper material robot automatic welding device and method. BACKGROUND

[0002] Laser welding is a kind of high-efficiency precision welding method using high-energy density laser beam as heat source, which melts and fuses materials together by using highly focused laser beam, and is suitable for various types of materials, and can perform deep welding on thin and thick workpieces. The key steps of laser welding include material positioning, laser beam focusing, welding gun and workpiece distance adjustment and welding process control. Its unique advantages are firm and clean welding, and minimum thermal deformation, and it is widely used in modern manufacturing industry.

[0003] When welding the workpiece, the focal point position of the welding head is adjusted first, so that the welding focal point is located at the weld of the workpiece. Due to the difference of the workpiece, the initial position of welding is different. At this time, the welding focal point needs to be adjusted to the weld position before welding. Generally, the welding gun is moved vertically by the mechanical arm when adjusting the welding focal point. The laser beam focal point is located at the weld by moving the welding gun. In this process, the operator needs to repeatedly operate the mechanical arm, and also needs to repeatedly watch the position of the laser focal point to determine whether the focal point is located at the weld. The operation is complicated, and the calibration efficiency is low. SUMMARY

[0004] The purpose of the present application is to solve the problem of inconvenient and quick adjustment of the position of the laser focal point, and to provide a copper material robot automatic welding device and method.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a copper material robot automatic welding device, comprising a welding bin, a dust hood is installed on the top of the welding bin, a controller is arranged at one end of the welding bin, a positioning table is arranged on the inner side of the welding bin, a mechanical arm is installed inside the welding bin above the positioning table, a positioning plate is connected to one end of the mechanical arm, a calibration connecting piece is installed on the positioning plate, a welding gun body is connected to one end of the positioning plate away from the mechanical arm through the calibration connecting piece, a docking lock unit is arranged at one end of the welding gun body, and a welding head is connected to the welding gun body through the lock unit.

[0006] The calibration connecting piece comprises telescopic air cylinders mounted on both sides of the positioning plate, the output end of the telescopic air cylinder is connected with an extension rod, one end of the extension rod is provided with a limiting ring, the end of the positioning plate away from the mechanical arm is rotationally connected with a first transmission spur gear through a rotating shaft, one end of the first transmission spur gear is fixedly connected with a threaded rod, the outer side of the threaded rod is sleeved with a threaded tube, the two sides of the threaded tube are provided with limiting rods connected with the positioning plate, the outer wall of the threaded tube is in sliding connection with the limiting rods, and one end of the threaded tube away from the threaded rod is fixedly connected with one end of the welding gun body.

[0007] As a further scheme of the present application: the calibration connecting piece further comprises an L-shaped positioning frame mounted on the top of the positioning plate, one side of the L-shaped positioning frame is provided with a piston cylinder, a piston rod extending to the outside of the piston cylinder is inserted into the inside of the piston cylinder, one side of the L-shaped positioning frame is rotationally connected with a dialing rotating rod through a bearing, one end of the dialing rotating rod is fixedly connected with a second transmission spur gear engaged with the first transmission spur gear, one end of the second transmission spur gear is mounted with a disc, one end of the disc is fixedly connected with a snap pin, the outer side of the snap pin is sleeved with a straight slot frame connected with the bottom of the piston rod, the top of the piston cylinder is provided with an air guide pipe, and the outer side of the extension rod is fixedly connected with a gas blocking plug.

[0008] As a further scheme of the present application: the top of the gas blocking plug is at the same horizontal height with the bottom end of the air guide pipe, and the bottom end of the air guide pipe is provided with a sealing gasket.

[0009] As a further scheme of the present application: the inner wall diameter of the limiting ring is greater than the outer wall diameter of the welding head.

[0010] As a further scheme of the present application: the center of the second transmission spur gear is coaxial with the center of the disc, and the center of the disc is in a dislocation state with the center of the snap pin.

[0011] As a further scheme of the present application: the butt joint lock unit comprises an annular connecting bin mounted on the end of the welding gun body away from the positioning plate, a through slot is formed in one side of the annular connecting bin, a clamping block is arranged at one end of the welding head, a clamping groove is formed in the inner wall of the annular connecting bin, an annular sliding plate is in sliding connection with the inner side of the annular connecting bin, and an arc-shaped elastic sheet connected with the annular connecting bin is arranged at the end of the annular sliding plate away from the welding head.

[0012] As a further scheme of the present application: the inner wall diameter of the annular sliding plate is smaller than the maximum diameter of the welding head, and the length and width of the cross section of the clamping block are equal to the length and width of the through slot and the clamping groove.

[0013] As a further scheme of the present application: the number of the through grooves is two, and the two through grooves are symmetrically arranged along the vertical central axis of the annular connecting bin; the number of the clamping grooves is two, and the two clamping grooves are symmetrically arranged along the horizontal central axis of the annular connecting bin.

[0014] As a further scheme of the present application: the depth of the clamping groove is greater than the thickness of the clamping block.

[0015] The present application also discloses a copper material robot automatic welding method, which adopts the above-mentioned copper material robot automatic welding device and comprises the following steps.

[0016] S1: first, fix the workpiece to be welded on the top of the positioning table, and then select the welding head required for welding;

[0017] S2: operate the butt joint lock unit to install the welding head on the welding gun body, start the telescopic cylinder, and move the limiting ring driven by the telescopic cylinder away from the welding gun body, so as to move the limiting ring from the outside of the welding head to one end of the welding head;

[0018] S3: move the positioning plate in the vertical direction through the operation of the mechanical arm, so that the limiting ring contacts the workpiece, and then finely adjust the position of the welding head by operating the calibration connecting piece, so that the focal point of the laser beam emitted by the welding head can be quickly adjusted to the weld;

[0019] S4: move the limiting ring to the outside of the welding head again through the contraction of the telescopic cylinder, so as to prevent the limiting ring from affecting the movement of the welding head, and then move the welding head through the mechanical arm to weld the workpiece.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1. By setting the calibration connecting piece, the limiting ring contacts the workpiece through the extension of the telescopic cylinder, the position turning rod is turned, the second transmission spur gear drives the first transmission spur gear to rotate through the rotation of the position turning rod, so that the distance from the positioning plate to one end of the welding gun body is adjusted, thereby finely adjusting the position of the focal point, improving the adjustment efficiency of the focal point position of the laser beam, and moving the limiting ring to the outside of the welding head through the contraction of the telescopic cylinder, when the telescopic cylinder is completely contracted, the top of the air blocking block contacts the bottom end of the air guide pipe, so that the bottom end of the air guide pipe is blocked, at this time, the air in the piston cylinder loses the flow space, so that the piston rod is prevented from moving relative to the piston cylinder, thereby preventing the welding gun body from moving relative to the positioning plate during welding of the workpiece, and further improving the stability of the welding.

[0022] 2, by setting the butt joint lock unit, the card block is pushed into the inside of the annular continuous warehouse, in this process, the annular slide plate slides in the inside of the annular continuous warehouse, at the same time, the arc elastic sheet is deformed due to extrusion, then the welding head is rotated by 90 degrees, the card block is dislocated with the through slot by the rotation of the welding head, at the same time, the card block is aligned with the card slot, then the annular continuous warehouse is supported, at this time, the annular slide plate will push the annular slide plate to move under the action of the elastic recovery force of the arc elastic sheet, so as to make the annular slide plate push the card block into the inside of the card slot, so as to quickly limit the welding head, so as to realize the quick connection of the welding head, improve the disassembly and assembly efficiency of the welding head. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the schematic diagram of the whole structure of the application;

[0024] Figure 2 It is the connection schematic diagram of the mechanical arm and the welding gun body of the application;

[0025] Figure 3 It is the connection schematic diagram of the positioning plate and the welding gun body of the application;

[0026] Figure 4 It is the connection schematic diagram of the Figure 3 It is the enlarged view of A in the figure;

[0027] Figure 5 It is the connection schematic diagram of the second transmission spur gear and the piston cylinder of the application;

[0028] Figure 6 It is the internal structure schematic diagram of the piston cylinder of the application;

[0029] Figure 7 It is the connection schematic diagram of the annular continuous warehouse and the welding head of the application;

[0030] Figure 8 It is the internal structure schematic diagram of the annular continuous warehouse of the application.

[0031] In the figure: 1, welding warehouse; 2, controller; 3, dust cover; 4, mechanical arm; 5, positioning table; 6, positioning plate; 7, telescopic cylinder; 8, welding gun body; 9, gas blocking block; 10, annular continuous warehouse; 11, welding head; 12, extension rod; 13, limiting ring; 14, threaded pipe; 15, threaded rod; 16, air guide pipe; 17, first transmission spur gear; 18, second transmission spur gear; 19, disc; 20, pin; 21, straight slot frame; 22, piston rod; 23, L-shaped positioning frame; 24, piston cylinder; 25, position shifting rotating rod; 26, through slot; 27, card block; 28, card slot; 29, annular slide plate; 30, arc elastic sheet. DETAILED DESCRIPTION

[0032] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of the present application.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "arranging" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0034] Please refer to Figures 1-8 In the embodiments of the present application, a copper material robot automatic welding device includes a welding bin 1, a dust hood 3 is installed on the top of the welding bin 1, a controller 2 is arranged at one end of the welding bin 1, a positioning table 5 is arranged on the inner side of the welding bin 1, a mechanical arm 4 is installed inside the welding bin 1 and located above the positioning table 5, a positioning plate 6 is connected at one end of the mechanical arm 4, a calibration connecting piece is installed on the positioning plate 6, a welding gun body 8 is connected to the positioning plate 6 away from the mechanical arm 4 through the calibration connecting piece, a docking locking unit is arranged at one end of the welding gun body 8, and a welding head 11 is connected to the welding gun body 8 through the docking locking unit;

[0035] The calibration connecting piece comprises telescopic air cylinders 7 installed on both sides of the positioning plate 6, the output ends of the telescopic air cylinders 7 are connected with extension rods 12, one end of each extension rod 12 is provided with a limiting ring 13, the end of the positioning plate 6 away from the mechanical arm 4 is rotationally connected with a first transmission spur gear 17 through a rotating shaft, one end of the first transmission spur gear 17 is fixedly connected with a threaded rod 15, the outer side of the threaded rod 15 is sleeved with a threaded tube 14, the two sides of the threaded tube 14 are provided with limiting rods connected with the positioning plate 6, the outer wall of the threaded tube 14 is slidably connected with the limiting rods, and one end of the threaded tube 14 away from the threaded rod 15 is fixedly connected with one end of the welding gun body 8.

[0036] In the embodiment, first, the workpiece to be welded is fixed on the top of the positioning table 5, then the welding head 11 required for welding is selected, then the welding head 11 is installed on the welding gun body 8 by operating the butt joint locking unit, the telescopic air cylinders 7 are started, the extension rods 12 drive the limiting rings 13 to move away from the welding gun body 8, so that the limiting rings 13 are moved from the outer side of the welding head 11 to one end of the welding head 11, then the positioning plate 6 is moved in the vertical direction by the operation of the mechanical arm 4, so that the limiting rings 13 are in contact with the workpiece, then the position of the welding head 11 is finely adjusted by operating the calibration connecting piece, so that the focal point of the laser beam emitted by the welding head 11 can be quickly adjusted to the welding seam, then the telescopic air cylinders 7 are retracted, so that the limiting rings 13 are moved to the outer side of the welding head 11 again, so as to prevent the limiting rings 13 from affecting the movement of the welding head 11, and then the workpiece is welded by moving the welding head 11 through the mechanical arm 4.

[0037] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the calibration connecting piece further comprises an L-shaped positioning frame 23 installed on the top of the positioning plate 6, one side of the L-shaped positioning frame 23 is provided with a piston cylinder 24, the inside of the piston cylinder 24 is inserted with a piston rod 22 extending to the outside of the piston cylinder 24, one side of the L-shaped positioning frame 23 is rotationally connected with a dialing rotating rod 25 through a bearing, one end of the dialing rotating rod 25 is fixedly connected with a second transmission spur gear 18 engaged with the first transmission spur gear 17, one end of the second transmission spur gear 18 is installed with a disc 19, one end of the disc 19 is fixedly connected with a snap pin 20, the outside of the snap pin 20 is sleeved with a straight slot frame 21 connected with the bottom of the piston rod 22, the top of the piston cylinder 24 is provided with an air guide pipe 16, and the outside of the extension rod 12 is fixedly connected with a gas blocking plug 9.

[0038] The top of the air blocking plug 9 is at the same level with the bottom end of the air guide pipe 16, the bottom end of the air guide pipe 16 is provided with a sealing gasket, the inner wall diameter of the limiting ring 13 is larger than the outer wall diameter of the welding head 11, the center of the second transmission spur gear 18 is coaxial with the center of the disc 19, and the center of the disc 19 is in a staggered state with the center of the bayonet 20.

[0039] In the embodiment, when the limiting ring 13 contacts the workpiece, the position adjusting rod 25 is rotated, the second transmission spur gear 18 is driven to rotate by the rotation of the position adjusting rod 25, the first transmission spur gear 17 is driven to rotate by the second transmission spur gear 18, the distance between the positioning plate 6 and the one end of the welding gun body 8 is adjusted, the fine adjustment of the focus point position is realized, the disc 19 rotates synchronously with the second transmission spur gear 18, the straight slot frame 21 moves up and down by the disc 19 through the bayonet 20, when the piston rod 22 moves downward, the external air enters the piston cylinder 24 through the air guide pipe 16, and the air in the piston cylinder 24 is extruded out of the piston cylinder 24 when the piston rod 22 moves upward, and finally the air is discharged through the air guide pipe 16, when the focus point of the laser emitted by the welding head 11 is located at the weld, the limiting ring 13 is moved to the outside of the welding head 11 by the contraction of the telescopic cylinder 7, the top of the air blocking plug 9 contacts the bottom end of the air guide pipe 16 when the telescopic cylinder 7 is completely contracted, the bottom end of the air guide pipe 16 is blocked, the air in the piston cylinder 24 loses the flow space, the piston rod 22 is prevented from moving relative to the piston cylinder 24, the welding gun body 8 is prevented from moving relative to the positioning plate 6 during the welding of the workpiece, and the stability of the welding is further improved.

[0040] Please refer to Figure 2 、 Figure 3 、 Figure 7 、 Figure 8 The butt joint locking unit comprises the annular connecting bin 10 mounted at the one end of the welding gun body 8 away from the positioning plate 6, the through slot 26 is formed in one side of the annular connecting bin 10, the clamping block 27 is arranged at one end of the welding head 11, the clamping groove 28 is formed in the inner wall of the annular connecting bin 10, and the annular sliding plate 29 is slidably connected to the inner side of the annular connecting bin 10.

[0041] The inner wall diameter of the annular sliding plate 29 is smaller than the maximum diameter of the welding head 11, the length and width of the cross section of the clamping block 27 are equal to the length and width of the through slot 26 and the clamping groove 28, the number of the through slot 26 is two, the two through slots 26 are symmetrically arranged along the vertical central axis of the annular connecting bin 10, the number of the clamping groove 28 is two, the two clamping grooves 28 are symmetrically arranged along the horizontal central axis of the annular connecting bin 10, and the depth of the clamping groove 28 is greater than the thickness of the clamping block 27.

[0042] In this embodiment: when installing the welding head 11, first align the clamping block 27 with the through slot 26, then push the clamping block 27 into the inside of the annular connecting bin 10, in the process, the annular sliding plate 29 slides in the inside of the annular connecting bin 10, at the same time, the arc-shaped elastic sheet 30 deforms due to extrusion, then rotate the welding head 11 by 90 degrees, through the rotation of the welding head 11, the clamping block 27 is dislocated with the through slot 26, at the same time, the clamping block 27 is aligned with the clamping slot 28, then support the annular connecting bin 10, at this time, the annular sliding plate 29 will push the annular sliding plate 29 to move under the action of the elastic restoring force of the arc-shaped elastic sheet 30, so as to make the annular sliding plate 29 push the clamping block 27 to be buckled into the inside of the clamping slot 28, in this way, the welding head 11 can be quickly limited, so as to realize the quick connection of the welding head 11, and improve the disassembly and assembly efficiency of the welding head 11.

[0043] The above-mentioned copper material robot automatic welding equipment is combined to provide a copper material robot automatic welding method, which specifically includes the following steps:

[0044] S1: first, fix the workpiece to be welded on the top of the positioning table 5, then select the welding head 11 required for welding;

[0045] S2: align the clamping block 27 with the through slot 26, then push the clamping block 27 into the inside of the annular connecting bin 10, in the process, the annular sliding plate 29 slides in the inside of the annular connecting bin 10, at the same time, the arc-shaped elastic sheet 30 deforms due to extrusion, then rotate the welding head 11 by 90 degrees, through the rotation of the welding head 11, the clamping block 27 is dislocated with the through slot 26, at the same time, the clamping block 27 is aligned with the clamping slot 28, then support the annular connecting bin 10, at this time, the annular sliding plate 29 will push the annular sliding plate 29 to move under the action of the elastic restoring force of the arc-shaped elastic sheet 30, so as to make the annular sliding plate 29 push the clamping block 27 to be buckled into the inside of the clamping slot 28, in this way, the welding head 11 can be quickly limited, so as to realize the quick connection of the welding head 11, and improve the disassembly and assembly efficiency of the welding head 11, start the telescopic cylinder 7, through the telescopic cylinder 7, the extension rod 12 drives the limiting ring 13 to move away from the welding gun main body 8, so as to move the limiting ring 13 from the outside of the welding head 11 to one end of the welding head 11;

[0046] S3: the positioning plate 6 is moved in the vertical direction through the operation of the mechanical arm 4, so that the limiting ring 13 is in contact with the workpiece, and when the limiting ring 13 is in contact with the workpiece, the position turning lever 25 is turned, the second transmission spur gear 18 drives the first transmission spur gear 17 to rotate through the rotation of the position turning lever 25, so that the first transmission spur gear 17 drives the threaded rod 15 to rotate, thereby adjusting the distance from the positioning plate 6 to the one end of the welding gun body 8, so as to realize the fine adjustment of the focusing point position, in the process, the disc 19 rotates synchronously with the second transmission spur gear 18, and at the same time, the disc 19 drives the straight slot frame 21 to move up and down through the bayonet lock 20, when the piston rod 22 moves downward, the external air enters the piston cylinder 24 through the air guide pipe 16, and similarly, when the piston rod 22 moves upward, the air in the piston cylinder 24 is extruded out of the piston cylinder 24, and finally discharged through the air guide pipe 16, when the focusing point of the laser emitted by the welding head 11 is located at the weld, the air in the piston cylinder 24 is extruded out of the piston cylinder 24, and finally discharged through the air guide pipe 16, when the focusing point of the laser emitted by the welding head 11 is located at the weld,

[0047] S4: the limiting ring 13 is moved to the outside of the welding head 11 through the contraction of the telescopic cylinder 7, when the telescopic cylinder 7 is completely contracted, the top of the air blocking block 9 is in contact with the bottom end of the air guide pipe 16, so that the bottom end of the air guide pipe 16 is blocked, at this time, the air in the piston cylinder 24 loses the flow space, so that the piston rod 22 is prevented from moving relative to the piston cylinder 24, thereby preventing the welding gun body 8 from moving relative to the positioning plate 6 during the welding of the workpiece, further improving the stability of the welding, so as to prevent the movement of the limiting ring 13 and the welding head 11 from affecting the welding, and then the welding head 11 is moved by the mechanical arm 4 to weld the workpiece.

[0048] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A robotized welding installation of copper material, comprising a welding cell (1), characterized in that, The top of the welding bin (1) is provided with a dust hood (3), one end of the welding bin (1) is provided with a controller (2), the inner side of the welding bin (1) is provided with a positioning table (5), the inside of the welding bin (1) is provided with a mechanical arm (4) above the positioning table (5), one end of the mechanical arm (4) is connected with a positioning plate (6), the positioning plate (6) is provided with a calibration connecting piece, one end of the positioning plate (6) away from the mechanical arm (4) is connected with a welding gun body (8) through the calibration connecting piece, one end of the welding gun body (8) is provided with a butt joint locking unit, the welding gun body (8) is connected with a welding head (11) through the butt joint locking unit. The calibration connecting piece comprises telescopic air cylinders (7) mounted on both sides of the positioning plate (6), the output end of the telescopic air cylinder (7) is connected with an extension rod (12), one end of the extension rod (12) is provided with a limiting ring (13), one end of the positioning plate (6) away from the mechanical arm (4) is rotatably connected with a first transmission spur gear (17) through a rotating shaft, one end of the first transmission spur gear (17) is fixedly connected with a threaded rod (15), the outer side of the threaded rod (15) is sleeved with a threaded tube (14), the two sides of the threaded tube (14) are provided with limiting rods connected with the positioning plate (6), the outer wall of the threaded tube (14) is slidably connected with the limiting rods, one end of the threaded tube (14) away from the threaded rod (15) is fixedly connected with one end of the welding gun body (8).

2. A robotic automated welding apparatus for copper material as defined in claim 1, wherein The calibration connecting piece further comprises an L-shaped positioning frame (23) mounted on the top of the positioning plate (6), one side of the L-shaped positioning frame (23) is provided with a piston cylinder (24), the inside of the piston cylinder (24) is inserted with a piston rod (22) extending to the outside of the piston cylinder (24), one side of the L-shaped positioning frame (23) is rotatably connected with a dialing rotating rod (25) through a bearing, one end of the dialing rotating rod (25) is fixedly connected with a second transmission spur gear (18) engaged with the first transmission spur gear (17), one end of the second transmission spur gear (18) is mounted with a disc (19), one end of the disc (19) is fixedly connected with a snap pin (20), the outer side of the snap pin (20) is sleeved with a straight slot frame (21) connected with the bottom of the piston rod (22), the top of the piston cylinder (24) is provided with an air guide pipe (16), the outer side of the extension rod (12) is fixedly connected with a gas blocking plug (9).

3. A robotic automated welding apparatus for copper material as defined in claim 2, wherein The top of the gas blocking plug (9) and the bottom end of the air guide pipe (16) are at the same horizontal height, the bottom end of the air guide pipe (16) is provided with a sealing gasket.

4. A robotic automated welding apparatus for copper material as defined in claim 2, wherein The inner wall diameter of the limiting ring (13) is greater than the outer wall diameter of the welding head (11).

5. A robotic automated welding apparatus for copper material as defined in claim 2, wherein The center of the second transmission spur gear (18) and the center of the disc (19) are coaxial, the center of the disc (19) and the center of the snap pin (20) are in a dislocation state.

6. A robotic automated welding apparatus for copper material as defined in claim 2, wherein The butt joint locking unit comprises a ring-shaped connecting bin (10) mounted at the end of the welding gun body (8) away from the positioning plate (6), a through groove (26) is formed on one side of the ring-shaped connecting bin (10), one end of the welding head (11) is provided with a clamping block (27), a clamping groove (28) is formed on the inner wall of the ring-shaped connecting bin (10), and an annular sliding plate (29) is slidably connected to the inner side of the ring-shaped connecting bin (10).

7. A robotic automated welding apparatus for copper material as defined in claim 6, wherein The inner wall diameter of the annular sliding plate (29) is smaller than the maximum diameter of the welding head (11), and the length and width of the cross section of the clamping block (27) are equal to the length and width of the through groove (26) and the clamping groove (28).

8. A robotic automated welding apparatus for copper material as defined in claim 6, wherein The number of the through grooves (26) is two, and the two through grooves (26) are symmetrically arranged along the vertical central axis of the ring-shaped connecting bin (10), and the number of the clamping grooves (28) is two, and the two clamping grooves (28) are symmetrically arranged along the horizontal central axis of the ring-shaped connecting bin (10).

9. A robotic automated welding apparatus for copper material as defined in claim 6, wherein The depth of the clamping groove (28) is greater than the thickness of the clamping block (27).

10. A robotic automated welding method of copper material, characterized by, The copper material robot automatic welding equipment of any one of claims 1-9 comprises the following steps: S1: first, fix the workpiece to be welded on the top of the positioning table (5), and then select the welding head (11) required for welding; S2: operate the butt joint locking unit to install the welding head (11) on the welding gun body (8), start the telescopic cylinder (7), and move the extension rod (12) and the limiting ring (13) away from the welding gun body (8) through the telescopic cylinder (7), so as to move the limiting ring (13) from the outside of the welding head (11) to one end of the welding head (11); S3: move the positioning plate (6) in the vertical direction through the operation of the mechanical arm (4), so that the limiting ring (13) contacts the workpiece, and then adjust the position of the welding head (11) through the operation of the calibration connecting piece, so that the focal point of the laser beam emitted by the welding head (11) can be quickly adjusted to the weld; S4: move the limiting ring (13) to the outside of the welding head (11) again through the contraction of the telescopic cylinder (7), so as to prevent the limiting ring (13) from affecting the movement of the welding head (11), and then move the welding head (11) through the mechanical arm (4) to weld the workpiece.

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