KR100697393B1 - Twin wire feeder - Google Patents

Abstract

A twin wire feeder which enables a welding operation to be performed more promptly by integrally combining two wire feeders with each other, thereby simultaneously feeding two wires smoothly at constant velocity is provided. In a wire feeder for feeding a welding wire, a twin wire feeder is characterized in that two of the wire feeders are integrally combined with each other to feed two wires at the same time. The wire feeder comprises a motor part(30) for rotating a rotary shaft, and first and second wire feeders(80,90) connected to both sides of the motor part. The motor part comprises a stator(32) which receives a power supply from the outside and includes permanent magnets(34) and brushes(36), a rotor(44) fixed to both sides of the stator, and rotary shafts(42) formed at the center of the rotor, axially installed on a mount plate(40) and installed oppositely to each other relative to the stator. The first and second wire feeders comprise a pinion(50), a first stage drive reduction gear(52), a second stage drive reduction gear(54), a first stage variable speed driven reduction gear(56), a second stage variable speed driven reduction gear(58), and two output gears(60).

Description

Twin wire feeder

1 is a schematic perspective view of a twin wire feeder used in the conventional carbon dioxide arc welding.

2 is a perspective view of a twin wire feeder according to the present invention;

3 is an exploded perspective view of the twin wire feeder according to the present invention.

Figure 4 is an exploded perspective view of the motor unit of the twin wire feeder according to the present invention.

5 is a perspective view of a wire feeder of the twin wire feeder according to the present invention.

Figure 6 is a cross-sectional view showing a meshed state of the gear applied to the twin wire feeder according to the present invention.

Explanation of symbols on the main parts of the drawings

1: drive motor 5: wire

10: fastening handle 12: hinge shaft

14: bracket 24: upright member

27: pressure roller 28: feed roller

29: output shaft 30: motor unit

32: stator 34: permanent magnet

35: coupling hole 36: brush

37: power connection line 38: connection groove

39: through hole 40: mounting plate

42: axis of rotation 44: rotor

50: pinion 52: single-speed driven gear

54: 2-stage driven reduction gear 55, 55a, 55b, 55c: shaft

56: 1-speed manual gearbox 58: 2-speed manual gearbox

60: output gear 62: fixed mount

64: bearing 65: shaft high

80: first wire feeder 82: feed roller

84: pressure roller 85: housing

86: pressure handle 87: wire

88: supply port 89: wire guide

90: second wire feeder

The present invention relates to a wire feeder used for feeding a welding wire, and more particularly, to a twin wire feeder capable of feeding two wires at once.

In general, a welding wire feeder (usually a "wire feeder") serves as a metal electrode by supplying a wire to a base material during gas arc welding, and supplies CO 2 or an inert gas through a nozzle at the tip of the torch. The wire is melted with the base material to protect the base material from arcing and melting from the atmosphere while being welded.

In addition, the gas arc welding uses a large current (125 ~ 250A), so the welding speed is high, and the diameter of the wire can be reduced, so that the welding is mainly used in general welding sites (ships, etc.). Device.

As a well-known example, Korean registered utility model No. 0308295 discloses a "twin wire feeder for use in carbon dioxide arc welding," which is an upright member 24 installed upright on the bottom as shown in FIG. A feed motor 28 fitted to the drive motor 1 mounted on the gearbox, a feed roller 28 fitted to the output shaft 29 extending from the drive motor 1, and a hinge shaft 12 to the upright member 24. Pressure rollers 27 respectively installed on two brackets 14 rotatably mounted to each other so as to be engaged with the feeding rollers 28, and one side of each bracket 14 to the upright member 24. It consists of a fastening handle 10 for detachably fixing, and each wire 5 is disposed in two grooves formed in the feed roller 28 so that the double wire 5 is fed to the welding torch. .

However, the twin wire feeder is a device for feeding twin wires specially used for carbon dioxide arc welding, which is inconvenient to use for other welding in which twin wire is not used, and two feeders are provided in one feed roller. If there is a problem in the feed roller because the wire enters there is a problem that can not use the wire feeder.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to combine the two wire feeder integrally to smoothly supply the two wires at the same speed at one time welding action It is possible to weld two parts at the same time to work more quickly, and to provide a twin wire feeder that can efficiently use space in the workplace by reducing the volume of the wire feeder.

The present invention for achieving the object as described above relates to a twin wire feeder, in the wire feeder for feeding the welding wire, the wire feeder is two wire feeders are integrally coupled to feed two wires at the same time It is characterized by.

Here, the wire feeder is characterized in that the first and second wire feeders are coupled to both sides of the motor portion and the motor portion for rotating the rotary shaft.

The motor unit is supplied with power from the outside, and a stator including a permanent magnet and a brush, a rotor fixedly installed at both sides of the stator, and a rotating shaft positioned at a center of the rotor and arranged on a mounting plate, respectively. Characterized in that installed so as to face the center.

In addition, the first and second wire feeders are connected to the rotating shaft of the motor unit and engaged with the pinion and the pinion arranged on the mounting plate to receive the rotation of the pinion to reduce the rotational speed of the first stage driven reduction gear and the first stage. A two-stage driven reduction gear that receives rotation of the driven reduction gear and maintains the rotational speed; a first-stage driven reduction gear that is engaged with the two-stage driven reduction gear and decelerates the reduced rotational speed; And a two speed shift reduction gear that is engaged with the gear shift reduction gear to maintain a reduced rotation speed, and two horizontally compatible output gears that output the rotational force of the two speed shift reduction gear. It is done.

In addition, the first stage driven reduction gear, the first variable speed reduction gear, and the output gear is characterized in that formed of any one of the material of the MC nylon or SM45C.

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

First, Figure 2 shows a perspective view of a twin wire feeder according to the present invention, the present invention is composed of two wire feeders, that is, the first and second wire feeders (80, 90) are integrally coupled. The first and second wire feeders 80 and 90 are coupled to both the left and right sides of the motor unit 30 in the center.

And Figure 3 shows an exploded perspective view of the twin wire feeder according to the present invention, the present invention is largely the first and second wire feeder in which the multi-stage reduction gear is installed on both the left and right sides of the motor portion 30 and the motor portion 30 in the center It consists of (80,90). In more detail, as shown in FIG. 4, the motor unit 30 receives power from the outside, but includes a stator 32 including a plurality of permanent magnets 34 and two brushes 36, and the stator 32. It consists of a rotor 44 which rotates in contact with the brush 36 of the () and a rotating shaft 42 located in the center of the rotor (44).

Here, the stator 32 has a through hole 39 formed to insert the rotary shaft 42 at the center thereof, and is opposite to each other so as to supply power to the first and second wire feeders 80 and 90 installed at both left and right sides thereof. The two are integrally formed so as to face the direction, but the connection portion 38 of the stator 32 formed on both sides is the power connection line 37 is located and the connecting groove 38 of the appropriate depth so that the rotary shaft 42 does not touch each other. Is formed.

The mounting plate 40 facing the stator 32 is provided with a rotor 44 which is powered by the brush 36 and rotates by the magnetic force of the permanent magnet 34, and the rotor 44 is provided. In the center of the rotating shaft 42, which is integrally rotated with the rotor 44 and axially coupled to the pinion 50 on the opposite side of the mount plate 40 is arranged. The rotor 44 is preferably installed spaced apart from the mount plate 40 so that friction with the mount plate 40 does not occur.

5 and 6 are cross-sectional views illustrating a perspective view of a wire feeder and a geared state applied to a wire feeder among twin wire feeders according to the present invention. Referring to FIG. The explanation is as follows.

First, a first-stage driven reduction gear 52 is engaged with the pinion 50 connected to the rotation shaft 42 of the motor unit 30 and installed on the mounting plate 40 to receive the rotation of the pinion 50. Reduces the rotational speed, and the second stage driven reduction gear 54 is arranged on the same axis as the shaft 55a of the first stage driven reduction gear 52 with a smaller diameter than the first stage driven reduction gear 52. Maintain a reduced speed.

The rotation of the reduced speed pinion 50 is transmitted to the first gear stage reduction gear 56 meshed with the second gear stage reduction gear 54, and the shaft of the first gear stage reduction gear 56 is rotated. On the same axis as 55b, a two-speed geared reduction gear 58 is arranged with a diameter smaller than that of the first-speed geared reduction gear 56.

The first and second speed reduction gears 56 and 58 perform the same role as the first and second speed reduction gears 52 and 54, and more specifically, the rotation of the second speed reduction gear 54 is performed. Re-decelerating and transmitting to the output gear 60.

In addition, two output gears 60 which are horizontally compatible with each other in order to reduce and output the re-decelerated rotation speed again are engaged with the two-speed driven reduction gear 58. The output gear 60 is a wire feeder. It is connected to the feed roller 82 and the same shaft (55c) installed outside the housing 85 of the, the feed roller 82 is rotated in accordance with the rotation of the output gear (60).

Here, the reduction gears are fixedly coupled to the shaft fixing part 65 formed in the mounting plate 40, the shaft fixing part 65 is the shaft when interlocking with the other gear and the fixed mount 62 for fixing the shaft 55 It is preferable that the bearing 64 is configured to allow idle rotation of only 55.

One embodiment of the above configuration will be described in more detail. First, the first-stage driven reduction gear 52 is a helical gear made of MC nylon or a material of SM45C. It is preferable that the single driven reduction gear 52 and the same shaft 55a are installed with a smaller diameter than the first-stage driven reduction gear 52, but the material is formed of a metal having the same material as the shaft 55a.

In addition, the first gear stage reduction gear 56 meshed with the second gear stage reduction gear 54 is formed of a helical gear made of MC nylon or SM45C, and the first gear stage gear reduction gear 56 and The two-speed geared reduction gear 58 installed on the same shaft 55b is provided with a diameter smaller than that of the first-speed geared reduction gear 56, but the material is made of the same material as the shaft 55b.

Here, the two speed shift reduction gear 58 is again connected to the output gear 60, the output gear 60 is the housing of the wire feeder so as to be horizontally compatible with the two speed shift reduction gear 58 ( Helical gears made of MC nylon are used.

The helical gear made of MC nylon applied to the present invention has superior durability than that of a homogeneous synthetic resin, and a helical gear that delivers quiet and precise rotational force is applied to ensure the precision of the wire feeder.

However, the present invention is not limited to the MC nylon material, and various materials such as general SM45C and helical gears as well as various gears such as spur gears or double helical gears may be applied.

Referring back to the exploded perspective view of the twin wire feeder according to the present invention shown in Figure 3 will be described in detail the operation of the twin wire feeder and the effects thereof.

First, the wires 87 are pushed into the supply ports 88 of the first and second wire feeders 80 and 90, respectively, to seat the wires 87 between the feed rollers 82, and the wires 87 between the wire guides 89. After pulling out and lowering the pressure roller 84 installed to be able to rotate up and down, pushing the pressure handle 86 upward to press the wire 87 seated between the transfer roller 82.

When welding starts, the motor unit 30 operates and the pinion 50 installed on the mounting plate 40 is rotated by the rotation of the rotation shaft 42 to rotate the reduction gears connected to the pinion 50 by gears. It works. Therefore, the rotation of the pinion 50 is decelerated through the first and second speed reduction gears 52 and 54 and the first and second speed reduction gears 56 and 58 and finally the two output gears 60 are rotated. After the re-deceleration through the rotating feed roller 82 protruding to the front of the housing 85 of the wire feeder.

Therefore, the wire 87 is taken out in proportion to the welding speed by the rotation of the feed roller 82, and the free wire 87 can be freely controlled by the role of the above-described gear to adjust the amount of the wire 87 taken out. It becomes possible.

In addition, since the two feed rollers 82 are operated simultaneously, the rotational torque is increased, and due to the quick response performance, the amount of the wire 87 can be sufficiently supplied during operation, thereby not only solving the occurrence of spatter in advance, Since the two wire feeders 80 and 90 are integrally coupled, the two wires 87 can be fed at the same time, so that welding of the two parts can be performed at the same time, thereby reducing the work time.

Although the above-described embodiments have been described with respect to the most preferred examples of the present invention, it is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications can be made without departing from the technical spirit of the present invention.

As described above, according to the twin wire feeder according to the present invention, since the speed reduction, low noise, and strong torque are generated by the multi-stage reduction gear system, it is possible to improve the reliability of the product because it does not generate spatter in the base material. In addition, two wires can be smoothly supplied at the same speed, so that welding of two parts can be performed at the same time, thereby reducing work time and reducing the volume of wire feeder, thus making efficient use of workplace space. Excellent effect such as can be obtained.

Claims (5)

In the wire feeder for supplying the welding wire, The wire feeder is a twin wire feeder, characterized in that two wire feeders are integrally coupled to feed two wires at the same time. The method of claim 1, The wire feeder is a twin wire feeder, characterized in that the first and second wire feeder is coupled to both sides of the motor portion and the motor portion for rotating the rotary shaft. The method of claim 2, The motor unit is supplied with power from the outside, and a stator including a permanent magnet and a brush, a rotor fixedly installed at both sides of the stator, and a rotating shaft positioned in the center of the rotor and arranged on a mounting plate, respectively, the center of the stator. Twin wire feeder, characterized in that installed so as to face. The method of claim 2, The first and second wire feeders are connected to the rotating shaft of the motor unit, are engaged with the pinion and the pinion arranged on the mounting plate, and receive the rotation of the pinion to reduce the rotational speed. A two-stage driven speed reduction gear that maintains the rotation speed by receiving rotation of the short gear, a first-stage driven speed reduction gear that decelerates the reduced rotation speed by being engaged with the two-stage driven speed reduction gear, and the first stage And a two speed shift reduction gear that is engaged with the speed reduction gear and maintains a reduced rotation speed, and two horizontally compatible output gears that output the rotational force of the two speed shift reduction gear. Twin wire feeder. The method of claim 4, wherein The first-stage driven reduction gear, the first-speed drive reduction gear, and the output gear is a twin wire feeder, characterized in that formed of any one of the material of MC nylon or SM45C.

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