KR200272224Y1 - Automatic welding device - Google Patents

Abstract

The present invention relates to an improved automatic welding device to reduce the amount of work of the operator and improve the productivity of work by automatically welding the heating clamp member that the worker can not weld for a long time in close proximity to the hot welded object.

The present invention, the vertical movable table that can be adjusted in height up and down on the vertically disposed prop; It is connected to the drive motor mounted on the upper surface of the mobile unit so as to enable power transmission, and is mounted to be rotatable vertically to the other end of the mobile station, and the inner tube constituting the gas supply passage and the welding power supply conduit is fitted therein. Torch rotating unit for rotating the torch in the circumferential direction of the welded object; It is connected to the lower end of the torch rotating unit, and rotated, and has a horizontal movable table movable radially in the plane formed by the rotation direction, the horizontal moving object is provided with a welding wire supply device, the torch in the radial direction of the welded object Torch linear movement unit for linear movement; A rotation connection unit for transmitting the rotational force of the torch rotating unit to the torch linear moving unit and performing linear movement of the horizontal moving unit by the operation of the driving motor; A welding torch mounted on the horizontal movable table and configured to perform welding while linearly moving in a rotational and radial direction with respect to the surface to be welded of the heating clamp member by the operation of the driving motor; And an operation panel for automatically controlling power such as a motor and a welder of the driving motor and the welding wire supply device.

Description

Automatic welding device

The present invention is confronted with an electrode rod that increases the temperature of molten steel in an RH-OB facility that controls molten steel components such as oxygen, silicon, phosphorus, etc. that remove impurities such as oxygen, silicon, and phosphorus in the steelmaking process. The present invention relates to a device for welding a heating clamp piece for supplying heat, and more particularly, by automatically welding a heating clamp member that can not be welded for a long time in close proximity to a high temperature to-be-welded material, thereby reducing the amount of work required by the operator. The present invention relates to an automatic welding device improved to improve productivity.

In general, the heating clamp member is made of copper (cu) having good conductivity, and during use, the bolt that fixes the heating clamp member is relaxed during repeated expansion and contraction at high temperature, thereby forming a gap between the electrode and the electrode. As a result, a spark is generated between the electrode rod and the surface contact portion of the heating clamp member, thereby causing the surface contact portion to melt. In this case, not only the supply of the specified current is impossible, but also the heating effect and the adjustment of the composition of the molten steel are not smooth, and the heating clamp member is periodically replaced and the surface contact portion (welded surface) is welded, machined, and reused. .

On the other hand, copper (cu) material is excellent in thermal conductivity, so the arc heat is not concentrated during welding, so preheating and welding at a high temperature (about 500 ℃).

In this related art, as shown in FIG. 9, after the heating clamp member 200 is heated to a temperature weldable by a preheater (not shown), the switch of the welder 210 is turned on. After preparing the supply of the welding shielding gas by opening the valve of the gas tank 220, the worker grasps the welding torch 230 and drives the welding wire supply device 240 while welding the heating clamp member 200. do. In this process, the welding wire driving device 240 is advanced between the welding wire 248 between the pair of rollers 246 rotated by the driving motor 242 and supplied into the welding torch 230, and the welding surface It is melt attached. When the welding wire 248 is in contact with the heating clamp member 200 to generate a spark, the shielding gas shields the weld from the outside can be a good welding operation.

However, the conventional work method as described above has a high risk of a safety accident by a worker performing a welding operation by directly holding a welding torch 230 in which a high temperature spark is generated, and a fume gas generated during welding. Due to the cause of various occupational diseases, work productivity is deteriorated.

The present invention is to solve the conventional problems as described above, the purpose is to automatically weld the heating clamp member that can not be welded for a long time in close proximity to the high-temperature welded object to reduce the work load of the operator and prevent safety accidents It is an object of the present invention to provide an automatic welding apparatus which is improved to improve the work productivity as well as the quality of the welded part by uniform work.

1 is a schematic view showing an overall automatic welding apparatus according to the present invention;

Figure 2 is an exploded perspective view showing a torch linear moving part of the automatic welding device according to the present invention;

3 is a block diagram showing a torch rotating part of the automatic welding device according to the present invention;

4 is a plan view along the A direction shown in FIG. 3;

5 is a detailed view of the camshaft rotational connection provided in the automatic welding device according to the present invention;

6 is a cross-sectional view of the gas supply unit provided in the automatic welding device according to the present invention,

a) is a configuration diagram of the upper end of the gas supply unit,

b) is a block diagram of the lower end of the gas supply unit;

7 is a sectional view of a welding torch equipped in the automatic welding device according to the present invention;

8 is a block diagram of a manual welding device according to the prior art.

* Explanation of symbols for the main parts of the drawings *

10 ..... Vertical Carrier 22 ..... Drive Motor

28 ..... rotating tube 31 ..... vertical tube

40 ..... torch moving part 54 ..... welding wire supply motor

60 ..... Rotary connection 62 ..... Connecting clutch

69 ..... Lift lever 80 ..... Gas supply

82,92 .... Quick Coupling 99 ..... Operator Panel

200 .... heating clamp member 210 .... welding machine

In order to achieve the above object, the present invention is equipped with a welding machine, a welding sealing gas tank, a welding wire feeder, etc., to an apparatus for welding a heating clamp piece (heating clamp piece) used in the RH-OB facility of the steelmaking process In

Vertical moving table that can be adjusted in height up and down on the vertically arranged shore; It is connected to the drive motor mounted on the upper surface of the mobile unit so as to enable power transmission, and is mounted to be rotatable vertically to the other end of the mobile station, and the inner tube constituting the gas supply passage and the welding power supply conduit is fitted therein. Torch rotating unit for rotating the torch in the circumferential direction of the welded object; It is connected to the lower end of the torch rotating unit, and rotated, and has a horizontal movable table movable radially in the plane formed by the rotation direction, the horizontal moving object is provided with a welding wire supply device, the torch in the radial direction of the welded object Torch linear movement unit for linear movement; A rotation connection unit for transmitting the rotational force of the torch rotating unit to the torch linear moving unit and performing linear movement of the horizontal moving unit by the operation of the driving motor; A welding torch mounted on the horizontal movable table and configured to perform welding while linearly moving in a rotational and radial direction with respect to the surface to be welded of the heating clamp member by the operation of the driving motor; And an operation panel for controlling power of the motor and the welding machine of the driving motor and the welding wire supply device, and automatically controlling the driving power according to a preset timing.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1, the automatic welding device 1 according to the present invention is equipped with a welding machine, a welding sealing gas tank, a welding wire feeder, and the like, and a temperature raising device for raising the temperature of molten steel in the RH-OB facility of the steelmaking process. The welding surface 200a of the heating clamp piece 200 facing the electrode and supplying power is automatically raised and welded.

The automatic welding device 1 of the present invention has a vertical movable table 10 that can be adjusted vertically on a vertically arranged strut 5, and the vertical movable table 10 moves to the upper side of the base 12. One side is coupled to the slidable movement on the pair of struts (5) arranged vertically, the lower end of the moving block 14 protruding screw member 16 is installed to be rotatable on the rear side of the struts (5) Is screwing in. The screw member 16 is provided with a handle 16a at an upper end. When the operator rotates the handle 16a, the screw member 16 is rotated, and the movable block 14 screwed thereto is moved up and down. The movable table 10 coupled to the movable block 14 is moved up and down.

On the other hand, the coupling surface of the vertical movable table 10 and the support (5) is wedge-shaped convex protrusions 18 at both edges of the vertical movable table 10 to allow only the vertical displacement of the vertical movable table 10, respectively. Is formed, and the wedge-shaped guide groove 18a into which the wedge-shaped protrusion 18 can be inserted is formed on the side of the support 5 facing the support 5, so that the vertical movable table 10 is a wedge-shaped convex protrusion. Due to the 18 and the concave guide groove 18a, it is possible to move up and down on the support 5 by moving up and down the moving block 14 without being separated from the support 5.

In addition, the torch rotating unit 20 located on one side of the upper surface of the vertical movable table 10 is for rotating the welding torch in the circumferential direction of the welded object, which is a forward and reverse rotation operation on the vertical movable table 10. It is possible to drive motor 22, the rotating shaft 22a of the drive motor 22 extends to the other side of the vertical movable table 10 through the bearing block 24, the bevel gear 26a at the front end Is mounted. In addition, the torch rotating unit 20 has a rotating tube 28 having a bevel gear 26b corresponding to the bevel gear 26a formed on an outer circumferential surface thereof, as shown in detail in FIG. 3. Vertically mounted to be rotatable, the rotary tube 28 has a hollow structure and is rotatably mounted with respect to the vertically movable table 10 through a bearing 29, the lower part of which will be described later. The rotating plate 42 of the torch linear movement unit 40 is integrally connected. Therefore, when the driving motor 22 is operated to rotate the rotating shaft 22a in a predetermined direction, the rotating tube 28 connected to the rotating shaft 22a through the bevel gears 26a and 26b is rotated and rotated. The rotating plate 42 connected to the pipe 28 is rotated in the same direction. In addition, a tooth 28a is formed on an upper surface of the bevel gear 26b of the rotary tube 28, which is to be coupled to the tooth 62a of the connection clutch 62 of the rotary connection 60, which will be described later. will be.

In addition, another hollow vertical tube 31 is fitted inside the rotary tube 28, and the vertical tube 31 is equipped with another bevel gear 31 a at its lower end, and the outer circumferential surface thereof is It is mounted to the other end of the vertical movable table 10 to be vertically rotatable, the inner peripheral surface of the rotary tube 28 to form a predetermined gap to rotate, the inner protection tube 33 made of an insulator, An inner tube 35 serving as a gas supply passage and a welding power supply conduit is integrally fitted.

In addition, the upper and lower portions of the torch rotating unit 20 are respectively provided with a gas supply unit 80, which is quick, respectively, on the upper and lower ends of the inner tube 35 extending to the upper and lower sides of the vertical tube 31, as shown in FIG. The gas supply pipe 84 is detachably and rotatably connected by using a coupling (Quick Coupling) 82. In addition, a ring terminal 86 extending from the welder 210 and supplying power to the inner pipe 35 made of the conductor is connected to an upper side of the gas supply pipe 84. In the lower side of the) is connected to the ring terminal 88 of the wire 87 for connecting the power to the torch 95 to be described later.

Thus, the inner tube 35 serves as a conductor that connects the power from the welder 210 to the torch 95. At the same time, since the inner pipe 35 is made of a hollow conduit and the gas supply pipe 84 is connected to the upper portion, a welding shielding gas flows into the inner pipe 35, and a lower end thereof supplies the gas to the welding torch 95. Another gas supply pipe 90 to be connected is to be connected through the quick coupling 92.

On the other hand, the inner tube 35 is insulated from the vertical tube 31 by a protective tube 33 made of an insulator. In addition, the quick couplings 82 and 92 connecting the gas supply pipes 84 and 90 to the upper and lower portions of the inner pipe 35 have a known structure in which a ball or the like is mounted therein, and an operator easily views the inner pipe. The gas supply pipes 84 and 90 can be detached from the upper and lower portions of the 35, and since they are widely used in the field of pipe coupling, detailed description thereof will be omitted.

Then, the torch is rotated in connection with the lower end of the torch rotation part 20, the torch straight movement part 40 is provided with a torch 95 which is capable of adjusting the welding torch 95 in the radial direction with respect to the welding surface 200a of the welded object. 2, the bracket 43 is formed at a predetermined interval to the lower side of the rotating plate 42, and the screw member 45 is rotatably mounted through the bracket 43. A bevel gear 45a is formed at one end of the screw member 45, and is coupled to the bevel gear 31a mounted at the lower end of the vertical pipe 31 to rotate the force from the vertical pipe 31. It receives and rotates the screw member 45.

In addition, the center of the screw member 45 is n-shaped horizontal linear guide 48 is screwed, the welding wire supply device 50 is provided on the horizontal linear guide 48, the horizontal linear guide (48) On the lower side, the welding torch 95 is mounted to be detachable by screwing as shown in FIG. Therefore, when the rotating plate 42 is rotated by the driving motor 22, the welding torch 95 rotates the welding surface 200a of the workpiece to be welded through the horizontal linear movable base 48 connected to the rotating plate 42. It can be rotated in the circumferential direction, if the screw member 45 of the lower portion of the rotary plate 42 is rotated, it is possible to move in the radial direction of the welded object due to the linear movement of the horizontal linear guide 48 screwed thereto.

On the other hand, the welding wire supply device 50 is provided with a wire drum 52 on which the welding wire 52a is wound on one side of the horizontal linear movement table 48, the wire supply motor 54 is mounted on one side thereof, The rotation shaft of the wire supply motor 54 is provided with a pinch roller 56 to supply the welding wire 52a to the welding torch 95 on the lower side between the idle roller 57. This means that the wire 52a should be smoothly supplied during the welding operation. This means that the wire supply motor 54 is properly rotated to supply the wire 52a to the welding torch 95, and at the time of supply of the wire 52a. In this case, the wire drum 52 can be rotated on the horizontal linear moving base 48.

Rotating connection part 60 is provided to transmit the rotational force of the torch rotating part 20 to the torch linear moving part 40 to make linear movement of the horizontal linear moving base 48 by the operation of the driving motor 22. Bar, which is to allow the screw member 45 of the torch linear movement unit 40 is rotated to achieve a linear movement of the welding torch 95, the structure is shown in detail in FIGS.

The rotation connector 60 is a pivoting lever 64 connected to the rotatable middle portion on the bracket 62 upright on the other side of the vertical movable table 10, and to be rotatable at one end of the pivoting lever 64. It is connected by a pin, extends downwardly through the vertical movable platform 10, is elastically supported by a spring 65 at the lower surface of the vertical movable platform 10, the lower end is equipped with a roller 67 Has a lever 69. In addition, when the roller 67 is located below, a long protrusion 71 as shown in FIG. 5 is formed on the upper portion of the rotating plate 42, and when the roller 67 passes over the long protrusion 71. The lifting lever 69 is raised while compressing the spring 65. On the other hand, the other end side of the pivot lever 64 is branched into two branches as shown in Figure 4 in the annular central groove 73 of the connecting clutch 62 is splined to the upper side of the vertical pipe (31) By having the projections 75 to be rotatably fitted, the pivoting lever 64 is connected without being pulled out of the annular central groove 73 even during the rotation of the connecting clutch 62.

This configuration is such that when the lifting lever 69 is lifted by the roller 67 and the long projection 71, the connecting clutch 62 is moved downward on the vertical pipe 31 and the lower surface of the connecting clutch 62. Tooth 62a formed in the tooth and the tooth 28a formed on the upper surface of the bevel gear 26b of the rotary tube 28 are connected to each other. During the downward movement, the spline is connected to the upper surface of the vertical tube 31 as shown in FIG. 4 so that it is connected to the rotary tube 28 through the gears 28a and 62a to rotate. If it is, the vertical pipe 31 is rotated at the same time.

As a result, when the lifting lever 69 is raised by the long protrusion 71 of the rotating plate 42, the other end of the pivoting lever 64 is lowered to lower the connecting clutch 62 and the connecting clutch 62. Tooth 62a is coupled to the tooth 28a of the rotary tube 28 to transmit the rotation operation of the rotary tube 28 to the coupling clutch 62, and the vertical tube splined to the coupling clutch 62 31), the rotation of the vertical tube 31 rotates the screw member 45 of the torch linear moving portion 40 through the lower bevel gears (31a) (45a), the screw member 45 The rotation of the horizontal movement of the linear movement table 48 is connected to the torch 95 is a linear movement.

However, when the roller 67 of the lifting lever 69 exceeds the long protrusion 71 of the rotating plate 42, the lifting lever 69 is lowered by the restoring force of the spring 65, which is a rotation lever ( 64 is lowered, and the other side of the pivoting lever 64 is raised to lift the connecting clutch 62 on the vertical pipe 31. In this case, the connection clutch 62 is separated from the upper surface gear 28a of the rotary tube 28 to block the transmission of rotational force, and at the same time, the rotation of the vertical tube 31 is also stopped. This stops the screw member 45 of the torch linear moving part 40 operated by the rotation of the vertical pipe 31, and the linear movement of the welding torch 95 stops. Therefore, the welding torch 95 is linearly movable only when the long protrusion 71 of the rotary plate 42 passes under the lifting lever 69, and stops when the long protrusion 71 passes, and the rotary plate ( When the long protrusion 71 passes over the lower portion of the roller 67 of the lifting lever 69 again, the stop is repeated. As a result, the horizontal linear movement table 48 is repeated. Is moved to the rightmost side of the screw member 45, and comes into contact with the limit switch 59a mounted thereon, and transmits an electric signal to linearly move until the operation of the driving motor 22 is stopped. The moved position is to be located in the center of the welding surface (200a) of the welded object.

On the other hand, the limit switch 59a is electrically connected to an operation panel 99 and the like, which will be described later, and the operation panel 99 reverses the rotation of the drive motor 22 based on an electrical signal of the limit switch 59a. It is possible to perform various preset operations such as turning off the welding power source, cutting off the welding shielding gas supply, or the like.

In addition, the welding is mounted on the horizontal linear movable base 48 and performs welding while linearly rotating and radially moving with respect to the surface to be welded 200a of the heating clamp member 200 by the operation of the driving motor 22. With the torch 95, the welding torch 95 is detachably mounted to the horizontal linear movable base 48 by screwing, as shown in Figure 7, the welding wire 52a is supplied through the inside The supply pipe 96 to be formed and a through hole 96 in the center thereof are formed, and an outer side of the through hole 96 has a flow path 97 through which welding sealing gas passes. The welding torch 95 is connected so that the ring terminal 98 is rotatably connected to the upper side of the wire supply pipe 96 into which the welding wire 52a is inserted to receive the welding power, and the ring terminal 98 is connected to the welding torch 95. As described above, the mounted conductive line 87 is connected to the lower end of the vertical pipe 31 as a ring terminal 88. In addition, one side of the gas pipe 90 for supplying the welding shielding gas is connected to an upper side flow path 97 of the welding torch 95, and the other side of the gas pipe 90 provides a quick coupling 92 to a lower end of the vertical pipe 31. Is connected by to supply the welding shielding gas into the interior of the welding torch 95.

In addition, the control unit 99 for controlling the power to the motor 54 and the welding machine 210 of the drive motor 22 and the welding wire supply device 50, and automatically control them according to a preset timing, The operation of the present invention is automatically performed according to a program set in advance by the operation panel 99.

The automatic welding device 1 of the present invention configured as described above is arranged as shown in FIG. 1 when the welding welding is to be made to the welded surface 200a of the heating clamp member 200. That is, the preheating device in which the heating clamp member 200 is placed on the lower side of the welding torch 95 is positioned, and the heating clamp member 200 is preheated through the preheating device. Then, the horizontal linear movable table 48 is moved on the screw member 45 so that the welding wire 52a of the welding torch 95 is located at the circumferential edge of the welded surface 200a. 69, the roller 67 at the bottom maintains the state positioned behind the long protrusion 71 of the rotating plate 42 immediately, and supplies the welding current through the operation panel 99, and supplies the welding wire 52a. Then, the drive motor 22 is operated to weld once in the circumferential direction of the welded surface 200a. In this case, the rotation of the welding torch 95 is the rotary tube 28 is rotated on the vertical movable table 10 through the bevel gear 26a, 26b pair as the drive motor 22 operates, When the connected rotary plate 42 is rotated, the welding torch 95 connected to the lower portion of the rotary plate 42 through the horizontal linear guide 48 is also rotated. In addition, since the rotation radius of the welding torch 95 is adjusted in advance to be equal to the radius of the circumference of the welded object, the outer edge of the welded surface 200a can be welded once.

During the welding operation, the welding power source is connected by ring terminals 86 and 88 connected to the upper and lower ends of the vertical pipe 31 and the conductive wires 87 connected to the welding terminals 95 to connect to the welding torch 95. It is applied to the welding torch 95 so that welding is performed on the surface to be welded 200a through the welding wire 52a. In the case of welding sealing gas, the gas supply pipes 84 and 90 and the vertical pipe 31 are used. It flows through the inner tube 35 of the welding torch 95, and is injected from the lower end.

In addition, the welding wire 52a is rotated by the pinch roller 56 by the operation of the welding wire supply motor 54, the wire 52a is drawn out from the wire drum 52 and continuously into the welding torch 95. To be supplied.

On the other hand, when one welding of the surface to be welded 200a is completed through the above process, the rotating plate 42 is returned to the first position where the rotation has started, and the long side of the upper surface of the rotating plate 42 is returned. The rotary plate 42 continues to rotate while the projection 71 contacts the roller 67 of the lifting lever 69 and raises the lifting lever 69. At this time, the lifting lever 69 is lifted while the roller 67 is traveling on the long protrusion 71, while the other side of the rotating lever 64 connected thereto is lowered while being raised by the long protrusion 71. The teeth 62a of the coupling clutch 62 remain coupled to the teeth 28a of the rotary tube 28, and the rotation of the rotary tube 28 is transmitted to the coupling clutch 62 due to this coupling. The vertical pipe 31 is splined to the connection clutch 62, and the rotation of the vertical pipe 31 is performed by the screw member of the torch linear moving part 40 through the bevel gears 31a and 45a at the bottom. 45), and the rotation of the screw member 45 moves the horizontal linear movable base 48 so that the torch 95 connected thereto moves linearly toward the radial center of the welded surface 200a.

However, the linear movement of the welding torch 95 is made only when the lifting lever 69 is raised by the long protrusion 71, and the movement amount of the torch 95 is the size of the long protrusion 71. By properly setting and adjusting, the welding torch 95 can be moved to an appropriate position inside the welding. On the other hand, if the roller 67 of the lifting lever 69 exceeds the long protrusion 71 of the rotating plate 42, the lifting lever 69 is lowered by the restoring force of the spring 65, which is a rotation lever ( 64 is lowered, and the other side of the pivoting lever 64 is raised to lift the connecting clutch 62 on the vertical pipe 31. Therefore, the connection clutch 62 is separated from the upper surface gear 28a of the rotary tube 28 to block the transmission of the rotational force, and at the same time the rotation of the vertical tube 31 is also stopped, the torch linear moving part 40 The screw member 45 is stopped and the linear movement of the welding torch 95 is stopped.

Therefore, the welding torch 95 is linearly movable only when the long protrusion 71 of the rotary plate 42 passes under the lifting lever 69, and stops when the long protrusion 71 passes, and the rotary plate ( When the long protrusion 71 passes through the lower portion of the roller 67 of the lifting lever 69 again, the movement stops further, and the stop is repeated. As a result, the horizontal linear movement table 48 is repeated. Is moved to the rightmost side of the screw member 45 to the center of the welded surface 200a to be welded.

Then, when the welding operation is made from the circumferential side of the welded surface 200a to the center as described above, the horizontal linear movable table 48 is brought into contact with the limit switch 59a on the right side of the screw member 45 to weld the power source. And the supply of the welding shielding gas is cut off, and the welding torch 95 is returned to its original position.

According to the present invention as described above, by welding the heating clamp member that can not be welded for a long time in close proximity to the hot welded object to reduce the work load of the operator, to prevent safety accidents, and to achieve uniform work In addition to improving the quality of work, the improved effect is obtained to improve the work productivity.

Claims (1)

In the device for welding the heating clamp piece (heating clamp piece) used in the RH-OB equipment of the steelmaking process, equipped with a welding machine 210, a welding sealing gas tank 220, a welding wire feeder, etc. Vertical movable table 10 which can be adjusted vertically on the support (5); It is connected to the drive motor 22 mounted on the upper surface of the vertical movable table 10 so as to enable power transmission, and is mounted to be rotatable vertically to the other end of the vertical movable table 10 and supplies gas therein. A torch rotating part 20 for inserting the inner tube 35 constituting the flow path and the welding power supply conductor, and rotating the torch 95 in the circumferential direction of the welded object; It is connected to the lower end of the torch rotation unit 20, and has a horizontal linear movable base 48 that is radially movable in the plane formed by the rotation direction, the welding wire supply device on the horizontal linear movable base 48 ( 50 is provided, the torch straight moving unit 40 for linearly moving the torch 95 in the radial direction of the welded object; A rotation connection part 60 which transmits the rotational force of the torch rotating part 20 to the torch linear moving part 40 and makes a linear movement of the horizontal linear moving table 48 by the operation of the driving motor 22; A welding torch mounted on the horizontal linear movable base 48 and performing welding while linearly moving in the rotational and radial directions with respect to the welded surface 200a of the heating clamp member 200 by the operation of the driving motor 22 ( 95); And controlling power of the motor 54 of the driving motor 22 and the welding wire supply device 50, the welding machine 210, and the like, and automatically controlling the welding sealing gas opening / closing valve according to a preset timing. Control panel 99; automatic welding device comprising a.