KR102176103B1 - Wire feeder for submerged arc welding - Google Patents

Abstract

The present invention relates to a wire feeder apparatus for submerged arc welding. According to the present invention, the wire feeder apparatus comprises: a wire supply module including a storage container storing a wire therein, and a sub motor unit which is able to selectively supply the wire; a welding module including a main motor unit which pulls the wire supplied from the wire supply module, and welding a parent metal; and a wire transfer module which transfers the wire supplied from the wire supply module to the welding module. An operation speed of the sub motor unit can be different from that of the main motor unit. The present invention is able to prepare wires to be supplied in a large volume, thereby reducing the time of workers to prepare for the work, and constantly performing welding. According to the present invention, the two motors have a different operation speed from that of each other to reduce the fatigue of the motor pulling the wire, thereby improving the life of the apparatus and greatly lowering the error rate of welding.

Description

Wire feeding device for submerged arc welding {WIRE FEEDER FOR SUBMERGED ARC WELDING}

The present invention relates to a wire supply device, and more particularly, to a wire supply device for submerged arc welding (Submerged Arc Welding, SAW).

In general, submerged arc welding (SAW) is widely used for joint welding of ships, steel pipes, pressure vessels, and storage tanks.

Submerged arc welding provides granular fluxes to the joints of a pair of butt-joined conductive base materials, provides a bare wire inside the granular flux, and provides a high current of about 1,500A to 3,000A to the wire and An arc is generated between the conductive base materials, and the joints of the conductive base materials are welded with a molten wire.

In the submerged arc welding, conventionally, the amount of wire supplied at a time corresponds to approximately 150 kg, and the supply of the wire is often cut off during welding, causing inconvenience of frequent filling of new wires.

In addition, the motor pulls out the wire from the storage container for welding, and the fatigue of the motor increases due to the weight and tension of the wire, resulting in a shortening of the life of the welding device.

KR 10-1412336 B1

The present invention is to solve the conventional problems as described above, and an object of the present invention is to provide submerged arc welding in which wire is supplied through a storage container in which the wire is stored in a large amount so that the supply of the wire is not frequently cut off during welding. It is to provide a wire supply device for.

Another object of the present invention is a wire for submerged arc welding that can extend the life by reducing the fatigue level of a motor that draws and transfers the wire using a double-installed motor for pulling and transferring the wire. It is to provide a supply device.

In order to achieve the object of the present invention as described above, a wire supply device for submerged arc welding according to an embodiment of the present invention includes a storage container in which a wire is stored, and a sub A wire supply module including a motor unit; A welding module including a main motor unit pulling a wire supplied from the wire supply module, and welding a base material; And a wire transfer module for transferring the wire supplied from the wire supply module to the welding module, wherein operating speeds of the sub motor unit and the main motor unit may be different from each other.

In the wire supply device for submerged arc welding according to an embodiment of the present invention, the storage container of the wire supply module may be a fail pack capable of supplying a maximum of 1,000 kg of wire.

In the wire supply apparatus for submerged arc welding according to an embodiment of the present invention, the sub-motor unit of the wire supply module comprises: a sub-motor unit for supplying power to withdraw the stored wire from the storage container; A wire strainer part supplied with the wire and preventing twisting of the drawn wire; An endless clutch unit positioned between the storage container and the wire strainer unit to give a gap to the wire supplied for welding; A pressurizing unit in which a wire supplied to the wire strainer is disposed between the endless clutch unit and the supply of the wire is controlled by interlocking with the endless clutch unit; And a reduction gear unit for controlling the speed of the sub-motor unit.

In the wire supply device for submerged arc welding according to an embodiment of the present invention, the endless clutch unit comprises: a body including a disk and a pillar protruding in the center of the disk; A roller in which the pillar is fitted in the center, a groove in which the wire is disposed is formed on an outer surface, and a rotation speed is changed by pressing the pressing unit; A pad disposed on both sides of the roller in the longitudinal direction of the column and selectively controlling rotation of the roller by generating friction with the side surface of the roller; And a pressure spring in which the pillar is fitted in the center. And a cap having an inner surface screwed to the outer surface of the pillar, and the pressure spring may be a radial plate spring that buffers screwing between the cap and the pillar.

In the wire supply device for submerged arc welding according to an embodiment of the present invention, the roller may contain different types of materials including brass.

In the wire supply device for submerged arc welding according to an embodiment of the present invention, when the wire is supplied to the welding module, the main motor unit rotates and pulls the wire, and the sub-motor unit rotates. When the wire is withdrawn from the storage container and the wire is not supplied to the welding module, the main motor unit stops rotating, and the sub-motor unit operates, but the roller is not rotated to prevent the wire from being drawn out. have.

In the wire supply apparatus for submerged arc welding according to an embodiment of the present invention, the wire transfer module includes: a pulley that selectively maintains tension while maintaining the transfer of the wire transferred from the wire supply module without being twisted; And a robot arm on which the pulley is mounted and supporting transfer of the wire between the wire supply module and the welding module.

In the present invention, since the supplied wire can be prepared in a large amount, the operator's work preparation time can be reduced and welding can be made continuously.

In the present invention, since the two motors have different operating speeds, the fatigue of the motor pulling the wire is reduced, thereby improving the life of the device and significantly reducing the defective rate of welding.

1 is a block diagram of a wire supply device for submerged arc welding according to an embodiment of the present invention.
2 is a view showing a sub motor unit of a wire supply device for submerged arc welding according to an embodiment of the present invention.
3 is a view of FIG. 2 viewed from a different angle.
4 is a view showing an endless clutch part of a wire supply device for submerged arc welding according to an embodiment of the present invention.
5 is a view showing the configuration of the endless clutch of FIG. 4 separated.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function obstructs an understanding of the embodiment of the present invention, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected or connected to that other component, but between each component another component It is to be understood that may be “connected”, “coupled” or “connected”.

Hereinafter, a wire supply device for submerged arc welding according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a wire supply device for submerged arc welding according to an embodiment of the present invention.

1, a wire supply device for submerged arc welding according to an embodiment of the present invention may largely include a wire supply module 100, a welding module 200, and a wire transfer module 300. have.

The wire supply module 100 may include a storage container 110 in which a wire W is stored and a sub motor unit 120.

The storage container 110 is preferably in the form of a Pail Pack in which the wire W used for submerged arc welding (SAW) can be stored in a large capacity. In addition, the storage container 110 has conventionally accommodated 150 kg of wire (W), but in the present invention, it is preferable to accommodate 1,000 kg of wire (W). For reference, the wire W used for welding in an embodiment of the present invention may be a large wire having a diameter of 4 mm or more.

2 is a view showing a sub motor unit of a wire supply device for submerged arc welding according to an embodiment of the present invention, and FIG. 3 is a view of FIG. 2 viewed from a different angle.

1 to 3, the sub-motor unit 120 is a configuration for withdrawing the wire (W) stored in the storage container 110, the sub-motor unit 130 and the wire strainer unit 140, endless clutch It may include a unit 150, a pressing unit 160 and a reduction gear unit 170.

The sub-motor unit 130 may supply power to withdraw the wire W stored in the storage container 110.

The wire strainer unit 140 is supplied with the drawn wire W and can prevent twisting of the drawn wire W.

The endless clutch unit 150 may give a gap to the supplied wire (W). That is, the endless clutch unit 150 may be located between the storage container 110 and the wire strainer unit 140, and when the wire W is supplied, the main motor unit 210, which will be described later, is a wire ( It can significantly reduce fatigue caused by pulling W).

A wire W may be disposed between the pressing unit 160 and the endless clutch unit 150. That is, before the wire W is supplied to the wire strainer unit 140, it may be disposed between the endless clutch unit 150 and the pressing unit 160. The pressing unit 160 may interlock with the endless clutch unit 150 and control the supply of the wire W.

The reduction gear unit 170 may control the speed of the sub-motor unit 130.

FIG. 4 is a view showing an endless clutch part of a wire supply device for submerged arc welding according to an embodiment of the present invention, and FIG. 5 is a view showing the configuration of the endless clutch part of FIG. 4 separated.

4 and 5, the endless clutch unit 150 may include a body 151, a roller 152, a pad 153, a pressure spring 154 and a cap 155.

The body 151 may include a disk 151a and a pillar 151b protruding from the center of the disk 151a. The pillar 151b may have a thread (not shown) formed on at least a portion of the outer peripheral surface.

The roller 152 may have a ring shape and a pillar 151b may be fitted in the center. The roller 152 may have a groove 152a formed on an outer surface formed of a curved surface along the circumferential direction. The supplied wire W may be disposed in the groove 152a.

The roller 152 may be interlocked with the pressing unit 160 to be described later, and the rotation speed may be changed by the pressing of the pressing unit 160.

For reference, the roller 152 may include different types of materials to improve durability. Brass may be included as the heterogeneous material. Referring to FIG. 5, the roller 152 may include a ring-shaped steel layer on the outside and a ring-shaped brass layer on the inside. In addition, if the roller 152 is formed of only one material, frictional heat between the pad 153 and the pressing unit 160 may be increased, and the possibility of mechanical defects may also be increased. That is, in one embodiment of the present invention, the roller 152 is easy to transfer the frictional heat with the column 151b by the pressing of the pressing unit 160 to the outside, including a brass layer (unsigned), and thus stability It can also be secured.

Meanwhile, the roller 152 may be an alloy material containing different types of materials to improve durability. At this time, the roller 152 may include a material of brass.

The pad 153 may have a ring shape and a pillar 151b may be fitted in the center.

The pad 153 may include a first pad 153a and a second pad 153b, and a column 151b so that the roller 152 is positioned between the first pad 153a and the second pad 153b. It is desirable to fit in. That is, a pair of pads 153a and 153b may be disposed on both sides of the roller 152 in the longitudinal direction of the pillar 151b. The first pad 153a and the second pad 153b may selectively adjust the rotation of the roller 152 by generating friction with the side surface of the roller 152. On the other hand, if it is determined that the pad 153 is worn due to friction with the roller 152, it can be replaced as a consumable product.

The pressure spring 154 has an annular shape and a column 151b may be fitted in the center. For reference, the pressure spring 154 is preferably a leaf spring, and more preferably radial to buffer the screwing of the cap 155 and the column 151b, which will be described later.

The cap 155 may have a screw thread (not shown) so that the inner surface is screwed with the outer surface of the pillar 151b. At this time, the pressing force of the pressure spring 154 may be adjusted according to the rotation of the cap 155, that is, the degree of screwing between the cap 155 and the column 151b.

The welding module 200 may weld a base material (unsigned) through a wire W supplied from the wire supply module 100.

The welding module 200 may include a main motor unit 210, and the main motor unit 210 may pull the wire W from the wire transfer module 300 to be described later. That is, the wire W supplied from the wire supply module 100 is transferred through the wire transfer module 300 to be described later, and the transferred wire W is pulled by the main motor unit 210 of the welding module 200. The base material can be welded by pulling.

When the wire (W) is supplied to the welding module, the main motor (not shown) of the main motor unit 210 rotates and pulls the supplied wire (W), at this time, the sub motor unit 130 of the sub motor unit 120 ) Can be withdrawn from the storage container 110 while rotating.

Further, when the wire W is not supplied to the welding module, the main motor of the main motor unit 210 may stop rotating. At this time, the sub-motor unit 130 is operated, but the roller 152 is stopped rotating by the pad 153 or the pressing unit 160, so that the wire W can be prevented from being drawn out from the storage container 110. .

Consequently, operating speeds of the main motor unit 210 and the sub motor unit 120 may be different from each other.

The wire transfer module 300 may be disposed between the wire supply module 100 and the welding module 200, and as mentioned above, the wire W supplied from the wire supply module 100 is connected to the welding module 200. ).

The wire transfer module 300 may include a robot arm 310 and a pulley 320.

The robot arm 310 may support transfer of the wire W between the wire supply module 100 and the welding module 200.

As shown in the drawing, the robot arm 310 may have a flooring material (not shown) placed on the floor and a support (not shown) in the shape of a'+' disposed on the top of the flooring material, but this is to explain the present invention. It is not limited thereto, and may have various forms, and any configuration may be included as long as the wire W is transferred.

In addition, a distance of 20 to 30m can be formed from the storage container 110 to the main motor unit 210, and the robot arm 310 covers the distance from the storage container 110 to the main motor unit 210. Can have a length

The pulley 320 may be mounted on the robot arm 310. The pulley 320 may maintain the transfer of the wire W transmitted from the wire supply module 100 so as not to be twisted. The pulley 320 may change or maintain the tension of the transferred wire W according to the user's selection. In the present invention, the pulley 320 has been described as being mounted on the robot arm 310, but may be arranged in various configurations and places according to the user's selection.

In the wire transfer module 300, the wire W transferred by the different operating speeds of the main motor unit 210 and the sub motor unit 120 may be partially stretched, which is supplied to the welding module 200. By forming a gap in the wire (W), it is not dependent only on the pulling force of the main motor unit 210, the fatigue of the device can be reduced, and the lifespan can also be extended.

What has been described above is merely an embodiment for implementing a wire supply device for submerged arc welding according to the present invention, and the present invention is not limited to the above-described embodiment, and the present invention claimed in the following claims. Without departing from the gist, anyone of ordinary skill in the technical field to which the present invention pertains will have the technical spirit of the present invention to the extent possible to implement various changes.

100: wire supply module 110: storage container
120: sub motor unit 130: sub motor unit
140: wire strainer unit 150: endless clutch unit
151: body 151a: original plate
151b: column 152: roller
152a: groove 153: pad
153a: first pad 153b: second pad
154: pressure spring 155: cap
160: pressurization unit 170: reduction gear unit
200: welding module 210: main motor unit
300: wire transfer module 310: robot arm
320: pulley W: wire

Claims (7)

A wire supply module including a storage container in which a wire is stored and a sub-motor unit capable of selectively supplying the wire;
A welding module including a main motor unit pulling a wire supplied from the wire supply module, and welding a base material; And
A wire transfer module for transferring the wire supplied from the wire supply module to the welding module,
The operating speeds of the sub motor unit and the main motor unit are different from each other,
The sub-motor unit of the wire supply module,
A sub motor unit supplying power to withdraw the stored wire from the storage container;
A wire strainer unit supplied with the wire and preventing twisting of the drawn wire;
An endless clutch unit positioned between the storage container and the wire strainer unit to give a gap to supply of wire for welding;
A pressurizing unit in which a wire supplied to the wire strainer is disposed between the endless clutch unit and the supply of the wire is controlled by interlocking with the endless clutch unit; And
Wire supply device for submerged arc welding comprising a reduction gear unit for controlling the speed of the sub motor unit.
The method according to claim 1,
The wire supply device for submerged arc welding, wherein the storage container of the wire supply module is a fail pack capable of supplying up to 1,000 kg of wire.
delete The method according to claim 1,
The endless clutch part,
A body including a disk and a pillar protruding from the center of the disk;
A roller in which the column is fitted in the center, a groove in which the wire is disposed is formed on an outer surface, and a speed at which the rotational speed is changed by pressing the pressing unit;
A pad disposed on both sides of the roller in the longitudinal direction of the pillar and selectively controlling rotation of the roller by generating friction with the side surface of the roller;
A pressure spring in which the pillar is fitted in the center; And
A cap whose inner surface is screwed to the outer surface of the pillar;
Including,
The pressure spring is a wire supply device for submerged arc welding that is a radial plate spring that buffers screwing between the cap and the column.
The method of claim 4,
The roller is a wire supply device for submerged arc welding containing different kinds of materials including brass.
The method of claim 4,
When the wire is supplied to the welding module, the main motor unit rotates and pulls the wire, the sub-motor unit rotates, and the wire is withdrawn from the storage container,
When the wire is not supplied to the welding module, the main motor unit stops rotating, and the sub-motor unit operates, but the roller is not rotated, thereby preventing the wire from being drawn out. .
The method according to claim 1,
The wire transfer module,
A pulley that selectively maintains tension while maintaining the transfer of the wire transmitted from the wire supply module without being twisted; And
A robot arm on which the pulley is mounted and supporting transfer of the wire between the wire supply module and the welding module;
Wire supply device for submerged arc welding further comprising a.

Images