CN117102743A - Wire feeding system, welding machine head and sealing welding equipment - Google Patents

Abstract

The application provides a wire feeding system, a welding machine head and sealing welding equipment, relates to the technical field of welding equipment, and solves the technical problem that a wire reel is complicated in replacement mode due to the installation structure of the wire reel in the welding machine head. The wire feeding system comprises a driving mechanism, a locking assembly, a mounting piece and a disc shell, wherein the disc shell is internally provided with a welding wire disc and a wire feeding assembly, the mounting piece is fixed in a welding machine head, the locking assembly is connected with the mounting piece, a guide part is arranged on the disc shell, a guide groove is arranged on the mounting piece, and the guide part is in sliding connection with the guide groove; when the guide part is positioned in the guide groove, the locking component can be clamped with or separated from the disc shell under the action of external force, and when the locking component is clamped with the disc shell, the disc shell is fixedly connected with the mounting part, and the driving mechanism is in transmission connection with the wire feeding component. The quick assembly disassembly of dish shell can be accomplished, is more suitable for the manipulator operation than the mode of directly dismantling the wire reel, is particularly useful for the welding operation in the sealed chamber.

Description

Wire feeding system, welding machine head and sealing welding equipment

Technical Field

The application relates to the technical field of welding equipment, in particular to a wire feeding system, a welding machine head and sealing welding equipment.

Background

When the workpiece to be welded is provided with dangerous articles which are easy to diffuse and leak, the welding process needs to be carried out in the sealing chamber, equipment maintenance in the sealing chamber needs to be carried out remotely through a manipulator arranged in the sealing chamber, and an operator operates outside the sealing chamber.

Wire feeding systems in the prior art include reels that are wound with wire, and when the wire on the reels is used up, in the prior art, the reels are manually removed from the welding head and then replaced with a new reel.

The present inventors found that there are at least the following technical problems in the prior art: because the operation process of taking out the wire reel from the welding head is more refined, when the welding head is used in an environment where operators with a certain dosage of nuclear radiation or narrow space cannot enter, the manipulator is difficult to replace manual work, and the wire reel is difficult to take out from the welding head, so that welding wire replacement is difficult.

Disclosure of Invention

The application aims to provide a wire feeding system, a welding machine head and a sealing welding device, which are used for solving the technical problem that the wire reel is complicated in replacement mode due to the installation structure of the wire reel in the welding machine head in the prior art _。 The preferred technical solutions of the technical solutions provided by the present application can produce a plurality of technical effects described below.

In order to achieve the above purpose, the present application provides the following technical solutions:

the application provides a wire feeding system, which comprises a driving mechanism, a locking assembly, a mounting piece and a disc shell, wherein a wire disc and a wire feeding assembly are arranged in the disc shell, and the wire feeding system comprises:

the mounting piece is fixed in the welding machine head, the locking assembly is connected with the mounting piece, the disc shell is provided with a guide part, the mounting piece is provided with a guide groove, and the guide part is in sliding connection with the guide groove;

when the guide part is positioned in the guide groove, the locking component can be clamped with or separated from the disc shell under the action of external force, and when the locking component is clamped with the disc shell, the disc shell is fixedly connected with the mounting piece, and the driving mechanism is in transmission connection with the wire feeding component.

Preferably, the locking assembly comprises a handle, a screw, and a latch block, wherein:

the handle and the clamping blocks are respectively fixed at two ends of the screw rod, and the screw rod is in threaded connection with the mounting piece: the guide part is provided with a bayonet, the guide part rotates the handle forward when being matched in place in the guide groove, the clamping block can penetrate through the guide groove to be inserted into the bayonet, the handle rotates reversely, and the clamping block can be separated from the bayonet.

Preferably, the wire feeding assembly comprises a driven wheel, a wire feeding wheel and a compression wheel which are rotatably connected in the disc shell, wherein: the driven wheel is fixedly connected with the wire feeding wheel, and a wire feeding gap for a welding wire to pass through is formed between the wire feeding wheel and the pressing wheel;

the driving mechanism comprises a driving device and a driving wheel which are in driving connection, and when the guide part is matched in place in the guide groove, the driving wheel is meshed with the wire feeding wheel;

the wire feeding device is characterized in that a wire correcting wheel is further arranged in the disc shell, the wire correcting wheel is positioned in the wire feeding direction of the wire feeding assembly, the wire correcting wheels are distributed on two sides of the wire feeding gap, and at least one side of the wire feeding wheel is a movable wire feeding wheel; when the movable wire feeding wheel moves along the horizontal direction, the gap between the movable wire feeding wheel and the wire feeding wheel at the other side can be adjusted, so that welding wires passing through the wire feeding gap are in a straight line state.

Preferably, a guide nozzle is arranged on the disc shell, and the guide nozzle is communicated with the wire feeding gap; the mounting piece is provided with a wire feeding pipe, and the guide part is inserted into the wire feeding pipe when being matched in place in the guide groove.

The application also provides a welding machine head, which comprises a machine head body, a welding gun connected with the machine head body and the wire feeding system, wherein the wire feeding system is communicated with at least one welding gun;

the welding gun comprises a welding gun body, a rotation driving device, a clamping rod, a tungsten electrode and a clamping head part, wherein:

the welding gun body is provided with a shaft cavity, the clamping rod is positioned in the shaft cavity, the clamping head part is fixedly connected with the lower part of the welding gun body, and the inner cavity of the clamping head part is communicated with the shaft cavity;

the inner cavity of the chuck part is provided with an inner conical surface, the lower end of the clamping rod is provided with an outer conical surface, and the inner diameter of the inner conical surface and the outer diameter of the outer conical surface are gradually reduced along the direction deviating from the driving device;

the rotation driving device is in transmission connection with the clamping rod and is used for driving the clamping rod to move along the axis direction of the welding gun body; when the outer conical surface moves to a position attached to the inner conical surface, the tungsten electrode is clamped and fixed by the clamping rod, and when the outer conical surface moves to a position separated from the inner conical surface, the tungsten electrode can be taken out from the clamping rod.

Preferably, the welding gun comprises a nut part, and the rotation driving device is in driving connection with the nut part and is used for driving the nut part to rotate; the nut part is in threaded connection with the shaft cavity, the nut part abuts against or is connected with the tungsten electrode clamp, and the nut part can push the clamp rod to linearly move towards the direction of the clamp head.

Preferably, the lower extreme of clamping lever is provided with more than two jack catch, the jack catch is around the axis evenly distributed of clamping lever, the outer conical surface is located all the periphery of jack catch, the outer conical surface with when interior conical surface is laminated mutually, all the jack catch draws close mutually and will the tungsten electrode centre gripping is fixed.

Preferably, the welding head further comprises a rotating body, an inner driving device, a transverse welding gun and a spot welding gun, wherein:

the inner driving device is fixed in the machine head body and is in driving connection with the rotating machine body so that the rotating machine body can rotate compared with the machine head body, and a positioning structure for positioning a workpiece to be welded is arranged on the rotating machine body;

the spot welding gun is fixed at the axis position of the rotating machine body, the transverse welding gun is communicated with the wire feeding system, and the transverse welding gun and the wire feeding system are fixedly connected to the side part of the rotating machine body.

The application also provides a sealing welding device which comprises a sealing chamber, a suspension device and the welding machine head;

the suspension device comprises a lifting mechanism which can be arranged in a reciprocating manner in the vertical direction and is connected with the machine head body through a flexible piece;

the welding machine head can move between the maintenance station and the welding station.

Preferably, the suspension device further comprises a cantilever beam, a rotating column, a fixed support column, a lifting driving device and a rotation driving device, wherein:

the rotary column is rotationally connected to the top end of the fixed support column, and the rotary driving device is in driving connection with the rotary column and is used for driving the rotary column to rotate in a horizontal plane;

the cantilever beam is fixedly connected with the rotating column, a vertical sliding rail is arranged at one end of the cantilever beam, which is far away from the rotating column, and the lifting mechanism is in sliding connection with the vertical sliding rail;

the lifting driving device is driven and connected with a wheel body, the top of the rotating column and one end of the cantilever beam, which is connected with the lifting mechanism, are respectively provided with a fixed pulley, a traction rope is wound on the wheel body, the traction rope bypasses the fixed pulleys and is fixedly connected with the lifting mechanism, and the lifting mechanism can be driven to ascend or descend when the wheel body rotates forwards or reversely.

Compared with the prior art, the wire feeding system, the welding machine head and the sealing welding equipment provided by the application have the following beneficial effects: when the welding wire reel is installed, the mechanical arm can clamp the reel shell, the guide part of the reel shell slides into the guide groove of the installation piece, after the reel shell is matched with the installation piece in place, the mechanical arm screws the locking assembly, the locking assembly is clamped with the reel shell, meanwhile, the reel shell is fixedly connected with the installation piece, and the driving mechanism is in transmission connection with the wire feeding assembly, so that the installation of the welding wire reel is completed; when the wire reel needs to be disassembled, the mechanical arm is used for screwing the locking assembly, the locking assembly is separated from the reel shell, and the mechanical arm clamps the reel shell to slide out of the guide groove of the mounting piece so as to disassemble the reel shell. According to the wire feeding system, through the structure, the disc shell can be quickly disassembled and assembled, and compared with a mode of directly disassembling the wire disc, the wire feeding system is more suitable for manipulator operation, and is particularly suitable for welding operation in a sealing chamber.

The welding machine head and the sealing welding equipment are provided with the wire feeding system, so that the replacement efficiency of the wire reel can be improved, and the welding machine head and the sealing welding equipment are particularly suitable for welding operation in a sealing chamber

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a wire feed system;

FIG. 2 is a schematic view of the structure within the disc housing;

FIG. 3 is a schematic view of one view of the mounting member;

FIG. 4 is a schematic view of another view of the mounting member;

FIG. 5 is a schematic structural view of a wire feed assembly;

FIG. 6 is a schematic structural view of a welding head;

FIG. 7 is a cross-sectional view of a welding head;

FIG. 8 is a schematic cross-sectional view of a spot welding gun and a transverse welding gun;

FIG. 9 is a schematic view of the structure of the clamping bar;

FIG. 10 is a schematic view of the overall structure of the seal welding apparatus;

FIG. 11 is a top view of a seal welding apparatus;

FIG. 12 is a schematic view of the mating structure of the suspension device and the welding head;

fig. 13 is a schematic structural view of a tub to be welded according to the prior art.

In the figure 1, a wire feeding system; 11. a disc housing; 111. a guide part; 112. a bayonet; 113. a guide nozzle; 12. a mounting member; 121. a wire feeding tube; 122. a guide groove; 13. a wire reel; 14. a locking assembly; 141. a handle; 142. a screw; 143. a clamping block; 15. a wire feeding assembly; 151. driven wheel; 152. wire feeding wheel; 153. a pinch roller; 16. a driving mechanism; 161. a driving device; 162. a driving wheel; 17. a welding wire; 181. wire correcting wheel; 182. an adjusting screw; 183. a moving block; 19. a clamping block; 2. a welding head; 21. a handpiece body; 31. a spot welding gun; 32. a transverse welding gun; 301. a welding gun body; 302. a rotation driving device; 303. a clamping rod; 3030. a claw; 3031. an outer conical surface; 304. a tungsten electrode; 305. a clip part; 3051. an inner conical surface; 306. a nut portion; 41. rotating the body; 411. positioning a guide plate; 42. an inner drive device; 5. a sealed chamber; 501. a welding station; 502. a maintenance station; 6. a suspension device; 61. a lifting mechanism; 62. a cantilever beam; 63. rotating the column; 64. fixing the support column; 65. a lifting driving device; 66. a rotation driving device; 67. a wheel body; 68. a fixed pulley; 69. a traction rope; 7. a flexible member; 8. a counterweight device; 9. a monitoring device; 100. a tub body; 200. a cover body; 300. spot welding the weld; 400. and (5) transversely welding the welding seams.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, based on the examples herein, which are within the scope of the application as defined by the claims, will be within the scope of the application as defined by the claims.

In the description of the present application, it should be understood that the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The embodiment of the application provides a wire feeding system, a welding machine head and a sealing welding device, which can improve the replacement efficiency of a wire reel and are particularly suitable for welding operation in a sealing chamber

The technical solution provided by the present application is described in more detail below with reference to fig. 1 to 13.

Example 1

As shown in fig. 1 to 5, the present embodiment provides a wire feeding system 1 including a driving mechanism 16, a locking assembly 14, a mounting member 12, and a tray housing 11 having a wire tray 13 and a wire feeding assembly 15 disposed therein, wherein: the mounting piece 12 is fixed in the welding machine head 2, the locking assembly 14 is connected with the mounting piece 12, the disc shell 11 is provided with the guide part 111, the mounting piece 12 is provided with the guide groove 122, and the guide part 111 is in sliding connection with the guide groove 122; when the guide part 111 is located in the guide groove 122, the locking component 14 can be clamped with or separated from the disc shell 11 under the action of external force, when the locking component 14 is clamped with the disc shell 11, the disc shell 11 is fixedly connected with the mounting piece 12, and the driving mechanism 16 is in transmission connection with the wire feeding component 15.

The mounting member 12 is located in the welding head 2, and the disc housing 11 is fixedly connected with the mounting member 12, i.e. the disc housing 11 is fixedly connected with the welding head 2. Referring to fig. 1, a damping disc shaft is rotatably connected to a disc housing 11, and a wire reel 13 is sleeved on the damping disc shaft. When the disc housing 11 is detached, the wire reel 13 in the disc housing 11 can be replaced.

Referring to fig. 1 and 2, a clamping block 19 is provided on the disc housing 11 for clamping by a robot, which can move the disc housing 11 by grasping the clamping block 19.

In the wire feeding system 1 of the embodiment, when the wire reel 13 is installed, the mechanical arm can clamp the reel shell 11, so that the guide part 111 of the reel shell 11 slides into the guide groove 122 of the installation piece 12, after the reel shell 11 is matched with the installation piece 12 in place, the mechanical arm screws the locking assembly 14, the locking assembly 14 is clamped with the reel shell 11, meanwhile, the reel shell 11 is fixedly connected with the installation piece 12, the driving mechanism 16 is in transmission connection with the wire feeding assembly 15, and the installation of the wire reel 13 is completed; when the wire reel 13 needs to be detached, the locking assembly 14 is screwed by the manipulator, the locking assembly 14 is separated from the reel shell 11, and the manipulator clamps the reel shell 11 to slide out of the guide groove 122 of the mounting piece 12 so as to detach the reel shell 11. The wire feeding system 1 can complete the quick assembly and disassembly of the disc shell 11 through the structure, is more suitable for the operation of a mechanical arm than the mode of directly disassembling the wire reel 13, and is particularly suitable for the welding operation in the sealing chamber 5.

As an alternative embodiment, referring to fig. 1, 3 and 4, the guide part 111 has a strip structure, and the guide part 111 and the guide groove 122 are vertically arranged; the locking assembly 14 includes a handle 141, a screw 142, and a latch 143, wherein: the handle 141 and the clamping block 143 are respectively fixed at two ends of the screw rod 142, and preferably, the handle 141, the screw rod 142 and the clamping block 143 are in an integrated structure, the structure is stable, and the screw rod 142 is in threaded connection with the mounting piece 12: the bayonet 112 is provided on the guide portion 111, when the guide portion 111 is fitted in place in the guide groove 122, the handle 141 is rotated forward, the clamping block 143 can be inserted into the bayonet 112 through the guide groove 122, the handle 141 is rotated backward, and the clamping block 143 can be separated from the bayonet 112.

As shown in fig. 2 and 3, when the hand grip 141 is rotated in the forward direction by the robot, since the screw 142 is screwed with the mount 12, the block 143 moves toward the bayonet 112 and can be inserted into the bayonet 112, and at this time, mechanical fixation of the disk case 11 and the mount 12 can be completed. When the manipulator rotates the handle 141 in the opposite direction, the clamping block 143 moves away from the bayonet 112, the clamping block 143 can be separated from the bayonet 112, at this time, the manipulator can withdraw the disc shell 11 from the mounting piece 12, and after the disc shell 11 is moved out of the sealing chamber 5, the disc shell 11 with the new wire reel 13 is replaced.

In this embodiment, the disc housing 11 is fixedly connected to the mounting member 12, and at the same time, the driving mechanism 16 is in transmission connection with the wire feeding assembly 15.

Specifically, referring to fig. 3-5, the wire feeding assembly 15 includes a driven wheel 151 rotatably coupled within the disc housing 11, a wire feeding wheel 152, and a pinch wheel 153, wherein: the driven wheel 151 is fixedly connected with the wire feeding wheel 152, and a wire feeding gap for the welding wire to pass through exists between the wire feeding wheel 152 and the pressing wheel 153; the driving mechanism 16 comprises a driving device 161 and a driving wheel 162 which are in driving connection, and when the guide part 111 is matched in place in the guide groove, the driving wheel 162 is meshed with the wire feeding wheel 152; the disc shell 11 is also internally provided with a wire correcting wheel 181, the wire correcting wheel 181 is positioned in the wire feeding direction of the wire feeding assembly 15, the wire correcting wheels 181 are distributed on two sides of the wire feeding gap, and at least one wire feeding wheel 152 is a movable wire feeding wheel 152; when the wire feeding wheel 152 is moved in the horizontal direction, the gap between the wire feeding wheel 152 and the wire feeding wheel 152 on the other side can be adjusted, so that the welding wire passing through the wire feeding gap is in a straight line state.

Referring to fig. 3 and 5, the driving wheel 162 passes through the side wall of the mounting member 12, and when the guide 111 slides in along the guide groove, the self weight of the tray housing 11 can complete the contact to complete engagement of the wire feeding wheel 152 with the driving wheel 162 as the guide 111 slides down; this structure can be in realizing the drive connection of actuating mechanism 16 and wire feed subassembly 15 to and the fixed connection of dish shell 11 and mounting 12, and dish shell 11 and mounting 12 can quick replacement.

The driving device 161 may be a motor, and drives the driving wheel 162 to rotate, when the guiding portion 111 is in place in the guiding groove, the driving wheel 162 is engaged with the wire feeding wheel 152, the driving wheel 162 drives the wire feeding wheel 152 to rotate, and the wire feeding wheel 152 is engaged with the pressing wheel 153 to feed the welding wire.

Referring to fig. 5, the disc housing 11 is screwed with an adjusting screw 182, the movable wire feeding wheel 152 is rotatably connected to the moving block 183, the end of the adjusting screw 182 abuts against the moving block 183, and the adjusting screw can push the moving block 183 to move under the driving of an external force, so that the gap between the wire feeding wheels 152 at two sides is adjusted, the welding wire passing through the wire feeding gap is in a straight line state, and the stable feeding of the welding wire is ensured.

As an alternative embodiment, referring to fig. 1 and 2, a guide nozzle 113 is provided on the tray housing 11, and the guide nozzle 113 communicates with the wire feeding gap; the mount 12 is provided with a wire feed pipe 121, and the guide nozzle 113 is inserted into the wire feed pipe 121 when the guide portion 111 is fitted in place in the guide groove 122. The matched structure of the guide nozzle 113 and the wire feeding pipe 121 can ensure that the welding wires smoothly move the wire feeding system 1, and the welding wires moving out of the wire feeding gap in the wire feeding assembly can enter the wire feeding pipe 121 through the guide nozzle 113 and be conveyed into a corresponding welding gun through the wire feeding pipe 121.

In the wire feeding system 1 of the present embodiment, the wire reel 13 is replaced by replacing the reel housing 11. During replacement, the manipulator lifts the disc housing 11 through the clamping block 19, and the disc housing 11 and the mounting piece 12 can be smoothly matched in place through the guide part 111 and the guide groove, and then the butt engagement of the driving wheel 162 and the wire feeding wheel 152 is completed through the self weight of the disc housing 11. And then the locking mechanism is used for locking the disc housing 11 and the mounting piece 12.

Example two

Referring to fig. 6 and 7, the present embodiment provides a welding head 2, which includes a head body 21, a welding gun connected to the head body 21, and the wire feeding system 1, wherein the wire feeding system 1 is in communication with at least one welding gun.

Under the conditions of long-time welding, poor protective gas protection effect and the like of the argon arc welding of the tungsten electrode 304, the tungsten electrode 304 is seriously burnt, and the welding quality is influenced. Therefore, tungsten electrode 304 argon arc welding requires frequent replacement of tungsten electrode 304 to ensure good welding quality. At present, in the automatic argon arc welding operation process, a mode of manually assisting in replacing the tungsten electrode 304 is generally adopted, so that the production efficiency is affected, and the mode cannot be applied in special environments, such as environments where operators cannot enter, such as nuclear radiation with a certain dosage or a narrow space.

In view of the above problems, referring to fig. 8 and 9, the welding gun of the present embodiment includes a gun body 301, a clamping rod 303, a tungsten electrode 304 and a chuck portion 305, where the clamping rod 303 is located in the gun body 301 and can move along an axis of the gun body 301, the chuck portion 305 is fixed in the gun body 301 and is sleeved outside a lower end of the clamping rod 303, an inner cavity of the chuck portion 305 has an inner conical surface 3051, an outer conical surface 3031 is provided at a lower end of the clamping rod 303, and an inner diameter of the inner conical surface 3051 and an outer diameter of the outer conical surface 3031 gradually decrease in a direction away from the driving device 161; when the outer tapered surface 3031 moves to a position to be in contact with the inner tapered surface 3051, the clamping rod 303 clamps and fixes the tungsten electrode 304, and when the outer tapered surface 3031 moves to a position to be separated from the inner tapered surface 3051, the tungsten electrode 304 can be taken out from the clamping rod 303.

Referring to fig. 8 and 9, the welding gun further includes a rotation driving device 302, the welding gun body 301 has a shaft cavity, the clamping rod 303 is located in the shaft cavity, the clamping head 305 is fixedly connected with the lower part of the welding gun body 301, and the inner cavity of the clamping head 305 is communicated with the shaft cavity; the rotation driving device 302 is in transmission connection with the clamping rod 303, and is used for driving the clamping rod 303 to move along the axis direction of the welding gun body 301.

Specifically, the rotation driving device 302 is connected to the welding gun body 301 through a connection flange, and is fixed by screws.

The rotation driving device 302 may be an actuator capable of generating a rotation motion, such as a revolving cylinder, a motor, or a hydraulic rotary cylinder. For example, the rotation driving device 302 may be a rotary cylinder, and the rotary cylinder is driven to perform a rotation motion by compressed gas with a certain air pressure, so as to complete the clamping and fixing of the tungsten electrode 304; alternatively, the rotation driving device 302 may be a stepper motor, and the pulse current is controlled to drive the stepper motor to perform a rotation motion, thereby completing the clamping and fixing of the tungsten electrode 304. Alternatively, the rotation driving device 302 may be a hydraulic rotation cylinder, and the flow of hydraulic oil is controlled to perform rotation movement, so as to complete clamping and fixing of the tungsten electrode 304.

According to the structure, the clamping rod 303 can clamp or release the tungsten electrode 304, when the clamping rod 303 does not clamp the tungsten electrode 304, the manipulator can clamp the tungsten electrode 304 to take the tungsten electrode 304 out of the welding gun, and the tungsten electrode 304 can be replaced quickly without entering the sealing chamber 5 manually.

As an alternative embodiment, the welding gun comprises a nut part 306, and the rotation driving device 302 is in driving connection with the nut part 306 and is used for driving the nut part 306 to rotate; the nut portion 306 is threadedly coupled to the shaft cavity, the nut portion 306 being clamped against or coupled to the tungsten electrode 304, the nut portion 306 being capable of pushing the clamping rod 303 to move linearly in the direction of the clamping head 305.

The connector is fixed on an output shaft of the rotation driving device 302 through a rotation stopping screw; the rotation driving device 302 (an actuator such as a revolving cylinder, a motor or a hydraulic rotating cylinder capable of generating a rotation motion) rotates and drives the connector to rotate, and simultaneously drives the nut to rotate.

In this embodiment, the rotation driving device 302 may drive the nut to perform a rotation motion, and convert the rotation motion into a linear motion of the clamping rod 303 through the nut, and then clamp and fix the tungsten electrode 304 through the outer cone 3031 and the inner cone 3051 where the clamping rod 303 contacts the chuck portion 305.

In this embodiment, since the screw thread structure is formed between the nut portion 306 and the welding gun body 301, the rotation motion of the nut portion can be converted into the downward linear motion of the clamping rod 303 along the axial direction of the welding gun body 301, so as to push the clamping rod 303 to tightly press the clamping head 305, and since the contact surface of the tungsten electrode 304 and the clamping head is in a conical surface structure, the downward pushing force can be converted into the clamping force for fixing the tungsten electrode 304, thereby playing a role in clamping the tungsten electrode 304; the rotation driving device 302 (an actuator such as a rotary cylinder, a motor or a hydraulic rotary cylinder which can generate rotary motion) rotates reversely, so that the loosening action of clamping the tungsten electrode 304 can be completed.

As an alternative embodiment, referring to fig. 9, when the outer cone 3031 of the clamping rod 303 and the inner cone 3051 of the chuck part 305 are not pressed against each other, more than two claws 3030 are disposed at the lower end of the clamping rod 303, the claws 3030 are uniformly distributed around the axis of the clamping rod 303, the outer cone 3031 is located at the outer circumferences of all the claws 3030, and when the outer cone 3031 is attached to the inner cone 3051, all the claws 3030 are close to each other and clamp and fix the tungsten electrode 304.

Referring to fig. 8 and 9, when the outer tapered surface 3031 of the clamping rod 303 and the inner tapered surface 3051 of the chuck part 305 are pressed against each other, the claws 3030 tightly hold the tungsten electrode 304 under the pressure of the inner tapered surface 3051 of the chuck part 305; when the outer tapered surface 3031 of the clamping rod 303 and the inner tapered surface 3051 of the chuck 305 are separated from each other, the claw 3030 loses the pressure action of the inner tapered surface 3051 of the chuck 305, and the interaction force between the claw 3030 is insufficient to clamp and fix the tungsten electrode 304, and at this time, the tungsten electrode 304 can be pulled out by clamping the tungsten electrode 304 by a manipulator.

As an alternative embodiment, referring to fig. 6 and 7, the welding head 2 further includes a rotating body 41, an inner driving device 42, a transverse welding gun 32, and a spot welding gun 31, wherein: the inner driving device 42 is fixed in the machine head body 21 and is in driving connection with the rotating machine body 41 so that the rotating machine body 41 can rotate relative to the machine head body 21, and a positioning structure for positioning a workpiece to be welded is arranged on the rotating machine body 41; the spot welding gun 31 is fixed at the axial position of the rotating body 41, and the transverse welding gun 32 is communicated with the wire feeding system 1 and fixedly connected to the side part of the rotating body 41.

The transverse welding gun 32 and the spot welding gun 31 each adopt the above-described gun configuration. The inner drive 42 may be a motor. The inner driving device 42 drives the rotating body 41 to rotate, so that the transverse welding gun 32 and the spot welding gun 31 are driven to perform welding work.

Referring to fig. 6 and 7, the positioning structure on the rotating body 41 may be a positioning guide plate 411 to accomplish accurate positioning of the welding head 2 and the workpiece to be welded, where the positioning accuracy is within 0.5 mm. After the rotating body 41 is positioned with the workpiece to be welded, the spot welding gun 31 and/or the transverse welding gun 32 can weld the workpiece to be welded.

Referring to fig. 13, fig. 13 is a schematic view illustrating a structure of a tub 100 to be welded according to the related art. The barrel body 100 to be welded is welded by argon tungsten-arc welding with a tungsten electrode 304. The exhaust hole of the cover body 200 is welded by adopting a non-filler wire spot welding mode; the transverse welding seam 400 between the cover body 200 and the barrel body 100 is welded by adopting a filler wire transverse welding mode. The welding seam between the cover body 200 and the barrel body 100 is a butt-joint girth weld, in the welding process, single-sided welding and double-sided molding are needed, in order to ensure the welding seam quality of the back surface of the welding seam (namely the joint with the cover body 200), before welding, back protection argon is needed to be injected into the cavity through the exhaust hole of the cover body 200, and after the cavity is filled with the argon, welding is performed, so that the back of the welding seam is prevented from being oxidized in the welding process.

In this embodiment, the positioning guide plate 411 on the welding head 2 can be positioned with the tub body 100, after positioning, the transverse welding gun 32 is used for welding the transverse welding seam 400 of the tub body 100, and the spot welding gun 31 is used for welding the spot welding seam 300 of the tub body 100, so that the sealing welding of the tub body 100 is completed, and the welding efficiency can be improved.

Referring to fig. 12, a counterweight device 8 is provided on a rotating body 41, and the counterweight device 8 and the transverse welding gun 32 are provided on opposite sides of the rotating body 41 for improving the balance performance of the structure. Referring to fig. 6, a monitoring device 9, such as a camera, is fixed on the rotating machine head, and is used for monitoring the welding condition, so that a worker outside the sealing chamber 5 can know the welding condition conveniently.

Example III

The present embodiment provides a seal welding apparatus, which includes a seal chamber 5, a suspension device 6, and the above-described welding head 2, as shown in fig. 10 and 11; the suspension device 6 comprises a lifting mechanism 61, wherein the lifting mechanism 61 is arranged in a reciprocating manner in the vertical direction and is connected with the machine head body 21 through a flexible piece 7; a maintenance station 502 and a welding station 501 are provided in the sealing chamber 5, and the welding head 2 is movable between the maintenance station 502 and the welding station 501.

Referring to fig. 11, a workpiece placement rack is disposed on the welding station 501, for fixing a workpiece to be welded, a tungsten electrode 304 replacement device may be disposed on the maintenance station 502, and the suspension device 6 drives the welding head 2 to move between the two stations, as shown in fig. 11.

Referring to fig. 13, when dangerous goods which are easily diffused and leaked are contained in the tub 100, the welding process is required to be performed in the sealing chamber 5, and maintenance of equipment in the sealing chamber 5 is also required to be remotely performed by a robot arm equipped in the sealing chamber 5 (an operator operates outside the sealing chamber 5). The sealing welding equipment in the embodiment is suitable for workpieces to be welded, wherein dangerous objects easy to diffuse and leak are arranged in the workpieces.

Above the interior of the sealing chamber 5 there is a transfer crane (not shown in the figures) with which the workpieces to be welded can be transferred.

The lifting mechanism 61 is used for driving the welding head 2 to descend for welding work or driving the welding head 2 to ascend for waiting for welding of the next workpiece. The machine head body 21 is connected with the lifting mechanism 61 through the flexible piece 7, the flexible piece 7 can be a steel wire rope or the like, and the flexible piece 7 has a structure, when the lifting mechanism 61 descends to the point that the rotating machine body 41 is just contacted with the workpiece to be welded, if the rotating machine body 41 is not completely aligned with the workpiece to be welded, the flexible piece 7 can assist in positioning the guide plate 411 and adaptively positioning the workpiece to be welded.

As an alternative embodiment, referring to fig. 10 to 12, the suspension device 6 of the present embodiment further includes a cantilever beam 62, a rotation column 63, a fixed support column 64, a lift drive 65, and a rotation drive 66, wherein: the rotating column 63 is rotatably connected to the top end of the fixed support column 64, and the rotating driving device 66 is in driving connection with the rotating column 63 and is used for driving the rotating column 63 to rotate in a horizontal plane; the cantilever beam 62 is fixedly connected with the rotating column 63, one end of the cantilever beam 62, which is away from the rotating column 63, is provided with a vertical sliding rail, and the lifting mechanism 61 is in sliding connection with the vertical sliding rail; the lifting driving device 65 is in driving connection with a wheel body 67, fixed pulleys 68 are arranged at the top of the rotating column 63 and at one end of the cantilever beam 62 connected with the lifting mechanism 61, a traction rope 69 is wound on the wheel body 67, the traction rope 69 bypasses the fixed pulleys 68 to be fixedly connected with the lifting mechanism 61, and the lifting mechanism 61 can be driven to ascend or descend when the wheel body 67 rotates forwards or reversely.

Referring to fig. 12, the rotation driving device 66 and the lifting driving device 65 can be motors, and the rotation driving device 66 and the lifting driving device 65 are placed outside the sealed chamber 5 and located in an operation corridor, so that maintenance is convenient (dangerous atmosphere leaks in the sealed chamber 5, so that operators do not enter the sealed chamber as much as possible). Power is transmitted into the interior of the seal chamber 5 through the wall penetrating member, thereby driving the respective mechanism to move.

Referring to fig. 12, the output end of the rotation driving device 66 is provided with a gear, the outer periphery of the rotation post 63 is provided with a gear ring, the gear is meshed with the gear ring, and when the rotation driving device 66 drives the gear to rotate, the rotation of the rotation post 63 compared with the fixed support post 64 can be realized, and thereby, the welding head 2 can be moved between the maintenance station 502 and the welding station 501.

The lifting mechanism 61 of the present embodiment is driven by the lifting driving device 65 to retract and release the traction rope 69 (such as a steel wire rope), so as to drive the welding head 2 to move in the high vertical direction. The rotation driving device 302 drives the rotation column 63 and the cantilever beam 62 to rotate, so that the welding head 2 is driven to move between the welding station 501 and the maintenance station 502.

The flow of the seal welding device of this embodiment is as follows when performing welding operation:

(1) When the workpiece to be welded is not lifted into the sealing chamber 5, the suspension device 6 lifts the welding head 2 to be positioned at the maintenance station 502, which is the initial state of the welding system;

(2) The crane in the sealing chamber 5 lowers the workpiece to be welded onto the workpiece placing rack;

(3) The suspension device 6 drives the welding head 2 to move to the welding station 501, namely, above the workpiece to be welded;

(4) After the welding head 2 is transferred to the upper part of the workpiece to be welded, the lifting mechanism 61 descends, so that the welding head 2 sits on the workpiece to be welded, accurate positioning is finished, and welding work is started.

The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples in this specification.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. Wire feeding system, characterized in that, including actuating mechanism, locking subassembly, installed part and inside be provided with wire reel and wire feeding subassembly's a set of shell, wherein:

the mounting piece is fixed in the welding machine head, the locking assembly is connected with the mounting piece, the disc shell is provided with a guide part, the mounting piece is provided with a guide groove, and the guide part is in sliding connection with the guide groove;

when the guide part is positioned in the guide groove, the locking component can be clamped with or separated from the disc shell under the action of external force, and when the locking component is clamped with the disc shell, the disc shell is fixedly connected with the mounting piece, and the driving mechanism is in transmission connection with the wire feeding component.

2. The wire feed system of claim 1, wherein the locking assembly comprises a handle, a screw, and a cartridge, wherein:

the handle and the clamping blocks are respectively fixed at two ends of the screw rod, and the screw rod is in threaded connection with the mounting piece: the guide part is provided with a bayonet, the guide part rotates the handle forward when being matched in place in the guide groove, the clamping block can penetrate through the guide groove to be inserted into the bayonet, the handle rotates reversely, and the clamping block can be separated from the bayonet.

3. The wire feed system of claim 1, wherein the wire feed assembly comprises a driven wheel, a wire feed wheel, and a pinch wheel rotatably coupled within the disc housing, wherein: the driven wheel is fixedly connected with the wire feeding wheel, and a wire feeding gap for a welding wire to pass through is formed between the wire feeding wheel and the pressing wheel;

the driving mechanism comprises a driving device and a driving wheel which are in driving connection, and when the guide part is matched in place in the guide groove, the driving wheel is meshed with the wire feeding wheel;

the wire feeding device is characterized in that a wire correcting wheel is further arranged in the disc shell, the wire correcting wheel is positioned in the wire feeding direction of the wire feeding assembly, the wire correcting wheels are distributed on two sides of the wire feeding gap, and at least one side of the wire feeding wheel is a movable wire feeding wheel; when the movable wire feeding wheel moves along the horizontal direction, the gap between the movable wire feeding wheel and the wire feeding wheel at the other side can be adjusted, so that welding wires passing through the wire feeding gap are in a straight line state.

4. A wire feed system as defined in claim 3, wherein a guide nozzle is provided on the disc housing, the guide nozzle being in communication with the wire feed gap; the mounting piece is provided with a wire feeding pipe, and the guide part is inserted into the wire feeding pipe when being matched in place in the guide groove.

5. A welding head, comprising a head body, a welding gun connected with the head body and the wire feeding system of any one of claims 1-4, wherein the wire feeding system is communicated with at least one welding gun;

the welding gun comprises a welding gun body, a rotation driving device, a clamping rod, a tungsten electrode and a clamping head part, wherein:

the welding gun body is provided with a shaft cavity, the clamping rod is positioned in the shaft cavity, the clamping head part is fixedly connected with the lower part of the welding gun body, and the inner cavity of the clamping head part is communicated with the shaft cavity;

the inner cavity of the chuck part is provided with an inner conical surface, the lower end of the clamping rod is provided with an outer conical surface, and the inner diameter of the inner conical surface and the outer diameter of the outer conical surface are gradually reduced along the direction deviating from the driving device;

the rotation driving device is in transmission connection with the clamping rod and is used for driving the clamping rod to move along the axis direction of the welding gun body; when the outer conical surface moves to a position attached to the inner conical surface, the tungsten electrode is clamped and fixed by the clamping rod, and when the outer conical surface moves to a position separated from the inner conical surface, the tungsten electrode can be taken out from the clamping rod.

6. The welding head of claim 5 wherein said welding gun includes a nut portion, said rotational drive means being drivingly connected to said nut portion for rotating said nut portion; the nut part is in threaded connection with the shaft cavity, the nut part abuts against or is connected with the tungsten electrode clamp, and the nut part can push the clamp rod to linearly move towards the direction of the clamp head.

7. The welding head according to claim 5, wherein the lower end of the clamping rod is provided with more than two clamping jaws, the clamping jaws are uniformly distributed around the axis of the clamping rod, the outer conical surfaces are positioned on the periphery of all the clamping jaws, and when the outer conical surfaces are attached to the inner conical surfaces, all the clamping jaws are close together and clamp and fix the tungsten electrode.

8. The welding head of claim 5 further comprising a rotating body, an inner drive, a transverse welding torch, and a spot welding torch, wherein:

the inner driving device is fixed in the machine head body and is in driving connection with the rotating machine body so that the rotating machine body can rotate compared with the machine head body, and a positioning structure for positioning a workpiece to be welded is arranged on the rotating machine body;

the spot welding gun is fixed at the axis position of the rotating machine body, the transverse welding gun is communicated with the wire feeding system, and the transverse welding gun and the wire feeding system are fixedly connected to the side part of the rotating machine body.

9. A sealing welding apparatus comprising a sealing chamber, a suspension device and a welding head as claimed in any one of claims 5 to 8;

the suspension device comprises a lifting mechanism which can be arranged in a reciprocating manner in the vertical direction and is connected with the machine head body through a flexible piece;

the welding machine head can move between the maintenance station and the welding station.

10. The seal welding apparatus of claim 9, wherein the suspension device further comprises a cantilever beam, a rotating column, a stationary support column, a lift drive, and a rotation drive, wherein:

the rotary column is rotationally connected to the top end of the fixed support column, and the rotary driving device is in driving connection with the rotary column and is used for driving the rotary column to rotate in a horizontal plane;

the cantilever beam is fixedly connected with the rotating column, a vertical sliding rail is arranged at one end of the cantilever beam, which is far away from the rotating column, and the lifting mechanism is in sliding connection with the vertical sliding rail;

the lifting driving device is driven and connected with a wheel body, the top of the rotating column and one end of the cantilever beam, which is connected with the lifting mechanism, are respectively provided with a fixed pulley, a traction rope is wound on the wheel body, the traction rope bypasses the fixed pulleys and is fixedly connected with the lifting mechanism, and the lifting mechanism can be driven to ascend or descend when the wheel body rotates forwards or reversely.