KR19990007481U - Pipe automatic welding device - Google Patents

Abstract

The present invention relates to an automatic welding device for pipes, and in particular, a lead screw 45 is vertically embedded in a transport box 47 fixed to a floor so as to be rotatable, and a moving block 47-embedded in the transport box 47. 1) the shanghai song section (85) is screwed through by the lead screw (45); The support body 40 is attached to one side of the movable block 47-1, and the guide roller 42 is built in the support body 40, and the arm 30 is supported by the guide roller 42. Forward and backward by the motor 43, the front and rear conveyance and driving unit 84 is inserted into the arm 30 so that the drive shaft 31 is rotated by the motor (50); The drive shaft 11-1 having the roller 11-1 mounted on the main body 10, which is fixed to the front end surface of the arm 30 and penetrated by the front end of the drive shaft 31, is formed of the drive shaft 31. A wire feeding part 83 which is penetrated so as to be engaged with a front end and a roller 11-2 which is engaged with the roller 11-1 is attached to a support 18 attached to the front surface of the main body 10; The welding torch 20, which is attached to the main body 10 and has a wire 61 supplied from the wire reel 60, and a shielding gas supply line 73-2 connected to the welding machine 80, is coupled thereto. It relates to a pipe automatic welding device, characterized in that consisting of.

Description

Pipe automatic welding device

The present invention relates to an automatic welding device for pipes, and in particular, by automatically welding a small pipe and an inner circumferential surface of a hollow shaft, which the worker cannot weld in close proximity, to protect the worker from harmful gases and rays generated during welding and to improve the productivity of the work. The present invention relates to an automatic welding device for pipes.

In general, the steelmaking industry is to form a steel sheet in a bending roll (bending roll) (not shown) in a cylindrical shape to connect to the required dimensions and weld the connection to make the pipe (100).

The automatic welding device of the cylindrical container currently used is placed on the rotating means 500 for rotating the circular container 100 to be welded about its center axis, driving the automatic welding device of the cylindrical container Proximity to the cylindrical container 100 to be welded and stop the bogie 400.

The horizontal head 30 is horizontally attached to the vertical post 40 of the automatic welding device of the cylindrical container, and the welding head 205 is positioned inside the cylindrical container 100 to be welded.

When the welding power supply 80 is turned “ON”, the welding current controller 301 and the welding wide feeder 10 are turned “ON” while the image processor 302 and the groove copying controller 303 in the home photographing means 200 are turned on. ) Will turn on at the same time.

In this way, when the automatic welding device of the cylindrical container is ready for operation, the supply current of the welding wire 61 is set in the welding current controller 301 and the welding speed is set in the speed controller 304 of the rotating means 500. After setting, when the valve 71 of the shielding gas cylinder is opened, the shielding gas is supplied to the welding nozzle 20 through the flow meter 72 and the welding current controller 301. ) And the speed controller 304 of the rotating means 507 rotates the cylindrical container 100 to be welded while the rotating means 500 is driven.

The welding wire 61 is supplied with a current of -pole from the welding current controller 301, and the cylindrical container 100 to be welded is simultaneously supplied with + pole and the welding wire 61 is to be welded. When contacted with the cylindrical container 100, arc (ARC) is generated and welding starts.

At this time, when welding is started, the shape of the welding groove 101-1 is captured by the television camera 201, which is the photographing means of the welding groove 101-1, and is sent to the image processor 302 and the home imitation controller 303. Automatic welding is performed while adjusting the position controllers 206 and 207 of the welding head 205.

However, the image processor 302 for controlling the welding head 205 because the camera 201, which is a photographing means of the welding groove 101-1, cannot photograph a groove shape due to harmful light and gas generated during welding. The home-mimicking controller 303 does not operate and an error occurs welding out of the welding portion 101-1, the distance between the camera 201 and the welding torch 20 is far, and the light shielding film for protecting the camera 201 is generated. In operation 203, the groove phenomenon of the first welding portion 101-1 was not recognized, and various welding defects occurred.

In addition, since the size of the welding head 205 is large, the size of the pipe 100 or the cylindrical container 100 to be welded is limited. In particular, the small diameter pipe copper cannot be welded.

In addition, since the automatic welding device of the cylindrical container is driven by the bogie 400, a rail (not shown) capable of driving the bogie 400 is also required, so that the space is also restricted.

In addition, in the conventional pipe welding apparatus, the distance between the welding wire supplier 10 mounted on the horizontal column 30 and the welding nozzle 20 is large, thus consuming much of the welding wire 61. When the welding head 205 is welded in close proximity to the vertical column 40, the electric wire 62 for supplying current to the welding wire 61 is struck below the horizontal column 30 so that Since it becomes an obstacle during horizontal movement and impossible during horizontal movement, the welding of the linear joint 1016 is virtually impossible, and thus manual welding was performed.

In addition, the wire 62 for supplying current to the welding wire 61 is bent so that the supply speed of the welding wire 61 supplied from the welding wire supplier 10 to the welding nozzle 20 is initially set. Since the welding performance is significantly reduced due to the inability to maintain the value, the worker directly enters the interior and causes manual welding, thereby reducing work productivity.

The present invention is fixed to the positioner (Positioner) to rotate the tube and the hollow shaft when welding the inner surface of the tube and hollow shaft in order to solve the conventional problems as described above can be automatically welded continuously located only in the tube In addition, the object of the present invention is to provide an automatic welding device for pipes that can reduce productivity of workers, improve productivity, prevent aspiration of fume generated during welding, and prevent burns and occupational diseases.

1 is a front view showing a conventional pipe welding apparatus,

Figure 2 is a side view showing a conventional pipe welding apparatus;

Figure 3 is a front view showing a welding head portion of a conventional pipe welding apparatus;

Figure 4 is an exploded perspective view showing an automatic pipe welding apparatus according to the present invention,

5 is a perspective view showing a pipe automatic welding device according to the present invention,

Figure 6 is a perspective view showing a state of use of the automatic pipe welding apparatus according to the present invention.

Explanation of symbols for main parts of the drawings

DESCRIPTION OF SYMBOLS 10 Wire supply main body 11-1, 11-2: Wire feed roller 20: Welding torch 21: Welding power supply terminal 30: Arm 31: Drive shaft 34: Rack gear 40: Support body 43: Drive motor 44: Pinion gear 50 : Drive motor 60: Wire reel 70: Sealing gas boom 80: Welding machine 90: Control box 100: Welding pipe 101-1: Welding part

In order to achieve the above object, the present invention is vertically mounted so that the lead screw is rotatable in the transfer box fixed to the floor, and the shanghai sending unit through which the moving block embedded in the transfer box is screwed through the lead screw; A support body is attached to one side of the moving block, a guide roller is built in the support body, and an arm supported by the guide roller is advanced back and forth by a motor, and the drive shaft is inserted into the arm to be rotated by a motor. Forward and backward movement and driving unit; The drive shaft is fixed to the front end of the arm and the roller is mounted to the main body which is penetrated by the front end of the drive shaft is penetrated to engage with the front end of the drive shaft, and is engaged with the roller on the support attached to the front of the main body A wire feeding part on which a roller is mounted; It is attached to the main body is provided with a wire type automatic welding device, characterized in that consisting of a welding torch is coupled to the wire supplied from the wire reel, the sealing gas supply line is connected to the welder.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is an exploded perspective view showing an automatic pipe welding device according to the present invention, Figure 5 is a combined perspective view showing an automatic pipe welding device according to the present invention, Figure 6 is the use of automatic pipe welding device according to the present invention It is a perspective view which shows a state.

The wire feeder 10 is fixed to one end of the arm portion 30, and a welding torch (FORCH) 20 is connected to one end of the wire feeder 10, and the wire feed roller 11 to the left end. -1) (11-2) and the calibration roller 14 are provided.

The wire feed roller 11-1 is connected to the drive shaft 10-1 and fixed with a nut 13.

One end of the drive shaft 10-1 is connected to the bevel gear 12, and the drive shaft 10-1 is connected to rotate through a bearing 19 to reduce rotational resistance.

At this time, the driven roller (11-2) of the wire feed roller (11-1) (11-2) is connected to the roller support portion 18 by a pin (16-2) to open and close, the roller support (18) One end is fixed to the wire feed body 10 with a pin 16-1, while the other end is fixed by the pressure lever 19.

Here, the pressure lever 19 is fixed to the wire feed body 10 by a pin 16-2.

Meanwhile, a terminal 21 for supplying welding power is connected to the welding torch 20 fixed to one end of the wire feed body 10, and a carbon dioxide gas for protecting the welding part is supplied to the side end of the welding torch 20. The nozzle 22 is connected.

The power supply terminal 21 connected to the welding torch 20 is connected to the welding machine 80 by a power cable 87.

At this time, the nozzle 22 connected to the side end of the welding torch 20 is connected to the gas supply hose 73-2, and the hose 73-2 connects the flow meter 72 to the gas cylinder 70. It is connected by media.

Here, one end of the wire supply body 10 is connected to one end of the cylindrical arm 30, and the other end of the arm 30 is connected to a motor 50 for driving the wire supply body 10. .

In addition, the arm 30 has a drive shaft 31 formed therein and the drive shaft 31 has a bevel gear 32 connected to one end of the bevel connected to the shaft 10 of the wire feed roller 11-1. It is connected with the gear 12.

And the arm 30 is a rack gear 34 is formed in the axial length direction at the lower end, and the support body 40 through which the arm penetrates up and down respectively to support the arm 30 to be able to move back and forth Two pairs of rollers 41 are incorporated.

At this time, the support body 40 is fixed to the motor 43 for driving the arm 30 on one side end, the motor 43 is fitted to the pinion gear 44 on one side end of the rotary shaft 43-1 When the motor 43 is connected to the rack gear 34 of the arm 30, the arm 30 is configured to be movable.

In addition, in the non-slip box 47, which is fixed to the bottom and the rear side is opened, a lead screw 45 is vertically built in the center, and the lead screw 45 is non-slip at the upper and lower ends, respectively. The upper and lower surfaces of the box 47 are mounted by bearings 46.

Here, the handle 48 is fixed to the upper end of the lead screw 45 penetrating the center of the upper surface of the non-slip box 47, the moving block 47-1 embedded in the anti-slip box is a lead screw 45 It is penetrated by a screw, and is attached to the front side surface of the support body 40 at the rear side surface of this moving block 47-1.

Therefore, when the handle 48 is rotated, the moving screw 47-1 moves up and down as the lead screw 45 rotates, and the support body 40 also moves up and down according to the movement of the moving block.

Hereinafter will be described the operation of the present invention.

First, the pipe 100 to be welded is fixed to a positioner (Positioner) (not shown), and the moving block 47-1 is moved upward by rotating the handle 48 for adjusting the height and height of the support body 40 and the arm 30. And the wire supply body 10 are also raised at the same time.

At this time, when the position of the welding torch 20 connected to one end of the wire feed body 10 approaches the welding position 101-1, the operation of the handle 48 is stopped.

Then, the switch 81 of the welder 80 is turned “ON” and the welding current is set in the control box 90.

In addition, when the valve 71 of the sealing gas cylinder 70 is opened, carbon dioxide gas, which is a sealing gas, reaches the welder 80 through the hose 73 through the flow meter 72, and the arm The speed of the drive motor 50 of 30 is set.

Meanwhile, when the welding preparation is completed, the motor 50 is operated in the control box 90, and the bevel gears 32 and 12, which are coupled to each other, rotate while driving the drive shaft 31 embedded in the arm 30.

Then, the driving roller 11-1 is rotated by the rotation of the bevel gear 12, and the driven roller 11-2 is rotated by the friction with the driving roller.

At this time, the wire 61 continuously fed from the wire reel 60 through the guide tube 62 passes through the welding torch 20 and at one side of the welding torch 20. The current of the + pole (anode) is simultaneously received from the pipe 100 to be welded while the current of the negative pole is supplied from the welding residual supply wire 87 connected to the end. As soon as it reaches), it starts arcing while generating arc.

When the welding is started, the drive motor 43 is operated in the control box 90, and the pinion gear 44 is rotated accordingly, and the pinion gear 44 advances the rack gear 34 which is tooth-coupled. .

Therefore, the arm 30 is advanced by the advanced rack gear 34, and the welding torch 20-1 in the axial direction is welded while the welding torch 20 coupled to the front end of the arm 30 is advanced at the same time. .

When the welding torch 20 reaches the end welding line 101a of the pipe 100 when the welding in the axial direction is completed, the motor 43 driving the arm 30 is stopped.

The present invention enables automatic welding without welding the pipe directly to the inside of the pipe when welding, which greatly increases the productivity due to the reduction of the work volume, and is also likely to occur due to the large amount of inhalation of gas generated during welding in a narrow space. Practical effects can be obtained to prevent occupational diseases.

Claims (1)

The lead screw 45 is vertically embedded in the transfer box 47 fixed to the bottom so as to be rotatable, and the moving block 47-1 embedded in the transfer box 47 passes through the screw by the lead screw 45. Being sent to Shanghai; The support body 40 is attached to one side of the movable block 47-1, and the guide roller 42 is built in the support body 40, and the arm 30 is supported by the guide roller 42. Forward and backward by the motor 43, the front and rear conveyance and driving unit 84 is inserted into the arm 30 so that the drive shaft 31 is rotated by the motor (50); The drive shaft 11-1 having the roller 11-1 mounted on the main body 10, which is fixed to the front end surface of the arm 30 and penetrated by the front end of the drive shaft 31, is formed of the drive shaft 31. A wire feeding part 83 which is penetrated so as to be engaged with a front end and a roller 11-2 which is engaged with the roller 11-1 is attached to a support 18 attached to the front surface of the main body 10; The welding torch 20, which is attached to the main body 10 and has a wire 61 supplied from the wire reel 60, and a shielding gas supply line 73-2 connected to the welding machine 80, is coupled thereto. Pipes automatic welding device, characterized in that consisting of.