KR20150000035U - Automatic welding machine for circle welding turntable carriage - Google Patents

Abstract

The present invention relates to an automatic welding machine using a submerged arc welding method, which is equipped with a turntable on a carriage and is capable of automatic welding when welding a curved welding line, To an automatic welding machine.
According to the present invention, an automatic welding machine to which a circle-welding turntable carriage is attached includes a carriage, a wire drum, a nozzle tip, a wire feeding feeder, and a flux feeder, The automatic welding machine according to claim 1, wherein the main body is connected to the upper portion of the carriage, and a cover is provided on the upper surface of the main body. Unit case; A rotating shaft rotatably mounted on the inside and outside of the turntable unit case; A worm wheel inserted and fixed to the rotating shaft and rotatably installed in the turntable unit case; A worm rotatably installed inside the turntable unit case so as to engage with the worm wheel; A rotary motor fixedly installed in the turntable unit case and driven by a sensing sensor installed in the welding head adjacent to the nozzle tip; A bracket positioned above the turntable unit case and inserted and fixed to the upper portion of the rotating shaft; A circular fixing plate fixed to an upper surface of the bracket; A rotary arm for connecting and fixing the wire drum, the nozzle tip, the wire feeding feeder, and the flux supply cylinder; And a fixture fixing the rotary arm to the upper surface of the circular fixing plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic welding machine for a circle welding turntable,

More particularly, the present invention relates to an automatic welding machine employing a submerged arc welding (SAW) technique. In the automatic welding machine, a turntable is mounted on a carriage, To an automatic welding machine to which a circle-welded turntable carriage is attached to enable automatic welding at the time of welding of a curved welding line.

In general, submerged arc welding (SAW) is a method in which uncoated welding wire is placed in a fine granular flux stacked on the surface of a joint, and arc heat is generated between the substrate and the base material, It is an automatic welding technique for welding metal, which is also called "arc welding" and also called "union melt welding" according to the name of inventor Union Carbide Corporation (mother company of Linde). Examples of the coating include a melting type, a sintered type, and a bond flux type. The advantage of this technique is that by using large currents it is more efficient and the quality of the weld metal is better. Submerged arc welding is mainly used for welding of plate materials which are relatively long downward welding lines such as shipbuilding, steel pipe manufacturing, pressure vessels, storage tanks, etc. and can be continuously welded.

However, the automatic welding machine using the submerged arc welding (SAW) technique is used for welding a straight welding line, and it is recognized that automatic welding of a curved welding line is impossible. This is because the carriage travels on rails using racks and pinions.

In the ship drying process, the welding line is a two-dimensional straight line and a curved line, so that straight welding can be performed by various devices. However, curved welding is carried out by hand of the welding person.

The submerged arc welding is a high efficiency welding method using a welding wire and a flux of 4.8 mm in diameter, which is a welding method commonly used in shipbuilding welding. It is used for the straight welded part and the curved welded part performs manual welding work.

The above manual welding is not only inefficient in workability but also causes internal defects in the welded part and causes environmental problems in the workplace due to the problem of the correction work and the gouging operation using the carbon rod. In fact.

In addition, welders using an automatic welding machine using a submerged arc welding technique have a problem that the manual welding function is lower than that of manual welders, and a separate equipment for manual welding is required.

FIG. 1 is a schematic view for explaining a conventional automatic welding machine, and FIG. 2 is a block diagram including a conventional artificial intelligent automatic welding machine.

As an example of a conventional automatic welding machine, an artificial intelligent automatic welding machine is disclosed in Korean Patent Registration No. 10-0327704 (registered Feb. 25, 2002).

1 and 2, the conventional artificial intelligent automatic welder 100 includes a remote welding current volume 22 for varying a feed rate of a motor for supplying an electrode wire 21, An artificial intelligent automatic welder (100) having a remote welding voltage volume (23) and realizing precise welding through a wire feeder (20) connected to a welding gun (30) provided with a torch switch (32) An inverter power supply 120 for smoothing and converting an input AC input voltage into a DC low-voltage high-current output power so as to output a stable arc in a wide band up to a range of ± 20%; The inverter power supply unit 120 may be configured to generate a pulse wave by comparing an error of a voltage generated from the inverter power supply unit 120 with a saw tooth wave and then output a uniform output current in accordance with a predetermined reference voltage, A PWM (Pulse Width Modulation) controller 130 for controlling the PWM controller 130; A memory 140 for storing and storing logic parameters of welding parameters including the type of the welding material to be welded, the type of gas used, the welding posture, and the type of the electrode wire 21; A switch operating unit 150 for selecting and selecting logic data of various welding parameters stored in the memory 140; A logic operation for processing the logic data of the welding parameters stored in the memory 140 by the selection of the switch operating part 150 and outputting the desired welding voltage of 10 to 40 V and the desired welding current of 50 to 350 A A controller unit 160; And a use power conversion unit 170 for converting the power supplied from the inverter power supply unit 120 into a used power supply and supplying the power to the PWM control unit 130 and the main controller unit 160, By simply inputting the welding material and the welding gas, the welding thickness, the welding posture, the shape of the welding portion, and the thickness of the electrode wire 21 by using various kinds of welding conditions using the microprocessor of the controller unit 160 in a database, It is possible to quickly and precisely realize the optimum welding conditions for realizing the welding and it is applicable to the electronic three (all posture) welds of vertical, horizontal, inclined, downward, upward, In the circle posture welding of semicircular or circular shape, since it relies on manual welding, its function as an automatic welding machine is insufficient. LA had a problem that it causes discomfort due to the welding operation.

In order to solve the above problems, the present invention has been made to solve the above-mentioned problems, and an automatic welding machine using a submerged arc welding (SAW) technique has a turntable mounted on a carriage, Welding of lines can be done automatically by using the same equipment without changing the equipment or technique, and by continuously welding the curved welding line like straight line welding line, it is possible to perform excellent welding quality and welding work quickly and easily by uniform welding And an automatic welding machine to which a circle-welded turntable carriage is attached.

According to another aspect of the present invention, there is provided an automatic welding machine including a carriage, a wire drum, a nozzle tip, a wire feeding feeder, and a flux feeder. The automatic welding machine includes a wire- A known automatic welding machine for continuously welding a welding wire in a flux covering a welding line of two base materials to realize welding with an arc heat generated between the welding wire and the base material, A turntable unit case having a cover on an upper surface of the main body; A rotating shaft rotatably mounted on the inside and outside of the turntable unit case; A worm wheel inserted and fixed to the rotating shaft and rotatably installed in the turntable unit case; A worm rotatably installed inside the turntable unit case so as to engage with the worm wheel; A rotary motor fixedly installed in the turntable unit case and driven by a sensing sensor installed in the welding head adjacent to the nozzle tip; A bracket positioned above the turntable unit case and inserted and fixed to the upper portion of the rotating shaft; A circular fixing plate fixed to an upper surface of the bracket; A rotary arm for connecting and fixing the wire drum, the nozzle tip, the wire feeding feeder, and the flux supply cylinder; And a fixture fixing the rotary arm to the upper surface of the circular fixing plate.

In the turntable unit case, a plurality of thrust bearings and ball bearings are provided on a rotating shaft.

The rotation motor is controlled and driven through a start / stop switch by sensing the rotation starting point of the two base material welding lines and the starting point marked at the rotation end point by the detection sensor.

According to the automatic welding machine with the circle-welding turntable carriage according to the present invention, the curved welding line is automatically welded by using the turntable mounted on the carriage, It is possible to reduce the time required for the welding and the preparation of the welding tool and to reduce the inconvenience of the welding work and to improve the welding quality by the uniform welding and to perform the welding work quickly and easily.

In addition, continuous welding of straight and curved welding lines does not cause arc disconnection, so gouging work for correcting welding defects is unnecessary, which can prevent environmental pollution in the workplace. There is an effect that it is prevented.

1 is a schematic view for explaining a conventional automatic welding machine,
2 is a block diagram including a concrete circuit showing a conventional artificial intelligent automatic welder,
FIG. 3 is a schematic view of an automatic welder equipped with a circle-welding turntable carriage according to the present invention;
Fig. 4 is an enlarged view of the main part of Fig. 3,
5 is a schematic view for explaining a use state of a curved welding line according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an automatic welding machine with a circle-welding turntable carriage according to the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified into various forms, and the same members are denoted by the same reference numerals in the respective drawings, and the detailed description of the known functions and configurations which are judged to unnecessarily obscure the gist of the present invention is omitted do.

FIG. 3 is a schematic view showing an automatic welder equipped with a circle-welding turntable carriage according to the present invention, FIG. 4 is an enlarged view of the main part of FIG. 3, and FIG. 5 is a cross- Fig.

As shown in FIGS. 3 to 5, the automatic welding machine 100 equipped with the circle-woven turntable carriage according to the present invention includes a carriage 110 that is driven by the drive motor 111, a non-covered welding wire 121 A nozzle tip 130 for supplying the welding wire 121 into a fine granular flux covering the welding line of the two base materials; A wire feeding feeder 140 composed of a wire feeding motor 141 and a roller 142 for feeding a welding wire 121 wound on the base plate 120 to the nozzle tip 130, And a flux feeder 150 in which granular fluxes are stored. The welding wire 121 is continuously fed through the wire feeding feeder 140 into the flux covering the welding lines of the two base metals. And the gap between the A known automatic welding machine (100) for realizing welding by heat comprises a main body (211) connected and fixed to an upper portion of the carriage (110), and a cover (212) (210); A rotating shaft 220 installed vertically rotatably on the inside and outside of the turntable unit case 210; A worm wheel 230 inserted into the rotary shaft 220 and rotatably installed in the turntable unit case 210; A worm 240 coupled to the worm wheel 230 and rotatably installed in the turntable unit case 210; A rotation motor 250 fixed to the turntable unit case 210 and driven by the control of a detection sensor 251 installed on the welding head 131 adjacent to the nozzle tip 130, ; A bracket 260 positioned above the turntable unit case 210 and fixed to the upper portion of the rotary shaft 220; A circular fixing plate 270 fixed to the upper surface of the bracket 260; A rotary arm 280 for connecting and fixing the wire drum 120 to the nozzle tip 130, the wire feeding delivery portion 140, and the flux supply cylinder 150; And a fixture (290) for fixing the rotary arm (280) to the upper surface of the circular fixing plate (270).

The turntable unit case 210 includes a plurality of thrust bearings TB1 and TB2 and ball bearings BR1 and BR2 on the rotating shaft 220. [ When the ball bearings BR1 and BR2 used as main bearings are applied to the rotary shaft 220 by the up and down vibrations transmitted to the rotary shaft 220, the thrust bearings TB1 and TB2 have a structural limit The ball bearings BR1 and BR2 are installed on the upper and lower surfaces of the ball bearings BR1 and BR2 to smoothly rotate the ball bearings BR1 and BR2, And the ball bearings BR1 and BR2 can be protected.

The rotation motor 250 detects the position of the starting point marked on the rotation start point S and the rotation end point E of the welding line PW of the base material P1 or P2 by the detection sensor 251, And is controlled and stopped via the switch SW. When the linear welding line PW of the base material P1 or P2 is welded, the detection sensor 251 senses that the rotation motor 250 is not driven, The controller 250 controls the driving of the motor 250 to automatically stop the motor.

The operation and effect of the automatic welder 100 having the circle-welding turntable carriage according to the present invention constructed as described above will be described.

First, the carriage 110 is installed so that a pinion (not shown) of the carriage 110 is engaged with a rack (not shown) of the mark net rail MR and then connected to the wire feeding feeding portion 140, The welding wire 121 protruding to the required position is fixed to the welding line PW between the base materials P1 and P2.

A tap piece (PT) used to prevent welding defects due to the crater phenomenon is installed at the welding start end and the welding end of the welding line PW of the base materials P1 and P2 do.

When power is applied to the carriage 110, electric power is supplied to the driving motor 111 of the carriage 110 mounted on the magnet rail MR so that the carriage 110 can start the welding operation with the tap piece PT ), The welding is performed on the straight weld line PW while running straight along the magnet rail MR. A flux is supplied from the flux supply cylinder 150 so as to cover the surface of the welding line PW between the two base materials P1 and P2 before performing the welding.

When the carriage 110 reaches the rotation start point S, the rotation start point S is detected by the detection sensor 251 and the rotation motor 250 is driven. At this time, the running of the carriage 110 is stopped.

When the rotation motor 250 is driven, the worm 240 rotates in the rotation motor 250, and the worm 240 rotates the worm wheel 230 with the decelerated rotation. At this time, the desired reduction gear ratio and drive torque can be obtained by the worm 240 and the worm wheel 230.

When the worm wheel 230 is rotated at a deceleration speed, the rotation shaft 220 inserted and fixed in the worm wheel 230 rotates simultaneously with the worm wheel 230, The bracket 260 fixed to the upper portion of the rotation shaft 220 rotates.

A circular fixing plate 270 fixed to the upper surface of the bracket 260 and a rotary arm 280 fixed to the upper surface of the circular fixing plate 270 are simultaneously rotated and a curved welding line PW ).

When the detection sensor 251 reaches the rotation end point E, the rotation of the rotation motor 250 is stopped and the rotation of the turntable 200 is stopped. That is, as shown in FIG. 3, the curved welding line PW between the rotation start point S and the rotation end point E is automatically welded by the rotation of the turntable 200 as the nozzle tip 130 is positioned do.

Therefore, automatic welding is possible for the curved welding line formed of the ¼ circular, semicircular, and circular shapes using the turntable 200 mounted on the carriage 110 as described above.

As described above, although the present invention has been described with reference to certain exemplary embodiments and drawings, it is to be understood that the present invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. Various modifications and variations are possible within the scope of the appended claims.

100: Automatic welder 110: Carriage
111: running motor 120: wire drum
121: Flux cored wire 130: Nozzle tip
131: welding head 140: wire feeding feeder
141: wire feeding motor 142: roller
150: flux supply cylinder 200: turntable
210: turntable unit case 211: main body
212: cover 220:
230: Wemma Hui 240: Warmer
250: rotation motor 251: detection sensor
260: bracket 270: circular fixing plate
280: rotary arm 290: fastener
S: Start point of rotation E: End point of rotation
P1, P2: Base material PT: Tip piece
PW: Welding line BR1, BR2: Ball bearing
TB1, TB2: Thrust bearing SW: Start / stop switch

Claims (3)

The wire feeder 140 includes a carriage 110, a wire drum 120, a nozzle tip 130, a wire feeding feeder 140, and a flux feeder 150. The wire feeder 140 includes a welding wire 121 ) Is continuously fed into a flux covering the welding line of the two base materials and is welded with arc heat generated between the base material and the base material,
A main body 211 connected to the upper portion of the carriage 110 and a cover 212 mounted on the upper surface of the main body 211;
A rotating shaft 220 installed vertically rotatably on the inside and outside of the turntable unit case 210;
A worm wheel 230 inserted into the rotary shaft 220 and rotatably installed in the turntable unit case 210;
A worm 240 coupled to the worm wheel 230 and rotatably installed in the turntable unit case 210;
A rotation motor 250 fixed to the turntable unit case 210 and driven by the control of a detection sensor 251 installed on the welding head 131 adjacent to the nozzle tip 130, ;
A bracket 260 positioned above the turntable unit case 210 and fixedly installed at an upper portion of the rotary shaft 220;
A circular fixing plate 270 fixed to the upper surface of the bracket 260;
A pipe-shaped rotary arm 280 for connecting and fixing the wire drum 120 to the nozzle tip 130, the wire feeding delivery portion 140, and the flux supply cylinder 150; And
And a fixture (290) for fixing the rotary arm (280) to the upper surface of the circular fixing plate (270). The method according to claim 1,
Wherein a plurality of thrust bearings TB1 and TB2 and ball bearings BR1 and BR2 are provided on the rotating shaft 220 in the turntable unit case 210. [ The method according to claim 1,
The rotation motor 250 detects the position of the starting point marked on the rotation start point S and the rotation end point E of the welding line PW of the two base materials P1 and P2 by the detection sensor 251, And the control unit is controlled to be driven and stopped through a stop switch (SW).

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