JPH0671444A - Electrode wire feeding device - Google Patents

Abstract

PURPOSE:To simply insert and change a wire in a short period by improving a clamping and loosening mechanism inside the feeding device in continuously feeding the electrode wire to a consuming electrode system welding equipment. CONSTITUTION:Wire guides 9, 10, 11 having two fixed rollers rotating with engaging to a driving roller 4 provided on a shaft 3 of a motor 2 and pressing rollers 7, 8 engaging to them, a having holes that an electrode wire W is inserted between two fixed rollers 5, 6 and before and back them are provided on the same line. Then, the pressing rollers 7, 8 and one side ends of pressing arms 16, 17 being respectively integrated is supported by a fulcrum 18 provided to a fixing member 13 fixing the central wire guide 10, and their other end pressing parts 16a, 17a are clamped and loosened with pressing handles 31, 32 which are provided on the upper side of a motor where these pressing parts 16a, 17a are positioned, and which are possible to incline outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an electrode wire feeding device used for feeding an electrode wire to a welding torch, arc welding equipment or the like in welding work.

[0002]

2. Description of the Related Art Conventionally, in consumable electrode type arc welding work and the like, electrode wires having various diameters from a large diameter to a small diameter have been used according to welding conditions, and therefore the wires are always exchanged. As the electrode wire is melted and consumed, it is necessary to feed the electrode wire straight and continuously from the wire reel to the welding site, and the wire supply device is used as an indispensable device.

As such a wire supply device, generally, a structure shown in FIG. 3 is widely used in which the electrode wire is pressed by a fixed roll and a pressure roll and is tensioned and fed linearly. This device will be briefly described. Wire guides 9, 10 and 11 each having a hole in the central portion in the feeding direction of the electrode wire W from the inlet side to the outlet side through which the wire drawn from the wire reel 26 can be inserted are provided in the frame 15. Attached wire guide fixing members 12, 13,
It is fixed by 14. Then, between the wire guide 9 on the inlet side and the wire guide 10 in the center, a first fixed roller 5 having a gear 5a is provided below the electrode wire W to be fed so as to be locked to the frame 15. A first pressure roller 7 having a gear 7a that engages with the gear 5a of the first fixed roller 5 is provided at an upper position facing each other. Similarly, a second fixed roller 6 having a gear 6a below the electrode wire is provided between the central wire guide 10 and the outlet side wire guide 11, and a second fixed roller 6 is provided above and opposite to the second fixed roller 6. A second pressure roller 8 having a gear 8a that engages with the gear 6a is provided, and at least the first and second fixed rollers 5 and 6 of these have a groove through which an electrode wire passes though not shown. It is provided.

Then, the first fixed roller 5 and the second fixed roller 5
The fixed roller 6 is engaged with a gear 4a included in a drive roller 4 which rotates on a shaft 3 of a motor 2 such as a print motor and those gears 5a and 6a, and the rotation of them causes an electrode wire to be fed leftward. , Delivered to welding equipment. The above-mentioned first fixed roller 5 and second fixed roller 6
The first pressure roller 7 and the second pressure roller 8 which are engaged and rotate with each other are integrally formed with the pressure arms 16 and 17, respectively. The flat pressing portions 16a and 17a at the other end, which are attached to the fulcrum 18 provided on the fixing member 13 by rivets or the like, are provided at the other end of the fixing member 19 attached to the frame 15, respectively. 20 and nut 22
The screw 21 is fixed so that the pressing force can be changed. In the figure, reference numeral 23 denotes a motor frame, and the frame 15 is attached to the motor frame 23 by a frame fixing screw 28. And this device B
Is fixed to a pedestal 25 by legs 24. In addition,
26 is a wire reel of the electrode wire W fed to the feeding device B, and 27 is a reel mounting device.

When the electrode wire W is set in the electrode wire feeding device having the above structure, the electrode wire pulled out from the electrode wire reel 26 is first inserted into the wire guide 9 on the inlet side of the feeding device. Pressure part 16 of pressure arm 16
In the state where a is tightened by the screw 21 and the nut 22 and pressed, the first fixed roller 5 and the first pressure roller 7 are in contact with each other, and it is impossible to insert the electrode wire into the groove of both. It is possible. Therefore, the screw 21 is once removed to release the pressured state of the pressure portion 16a of the pressure arm 16, a gap is formed between the first fixed roller 5 and the first pressure roller 7, the electrode wire is passed through, and the center is continued. Through the wire guide 10, and then the screw 21a that fastens the pressing portion 17a of the pressing arm 17 is removed in the same manner as above to remove the screw 21a between the second fixed roller 6 and the second pressing roller 8. After making a gap and passing the electrode wire through it, insert it into the wire guide 11 on the outlet side, pull out the wire tip to the outside of the device, and tighten the pressure parts 16a and 17a with screws before driving the motor. Then, the electrode wire is fed to welding equipment or the like.

[0006]

As described above, in the conventional electrode wire feeder, the gap between the fixed roller and the pressure roller is obtained when the electrode wire is inserted into the device or the wire having a different diameter is replaced. Therefore, it is necessary to remove the screws on the inlet side and the outlet side each time, and it takes too much time to insert or replace the wire, which lowers the work efficiency.

As a result of studies to solve the above-mentioned problems of the conventional electrode wire feeding device, the present inventors have tightened the pressurizing portion of the pressurizing arm by the pressurizing handle which can be tilted via the fulcrum. The present invention has led to the present invention by finding that relaxation is performed.

[0008]

That is, according to the present invention, two fixed rollers which are engaged with a driving roller provided on a shaft of a motor and rotate are supported by a frame, and the two fixed rollers are arranged relative to each other. A pressure roller integral with the pressure arm is provided on the upper part of the pressure roller with an electrode wire insertion gap maintained, and an electrode wire insertion groove is provided on at least one of the fixed roller and the pressure roller, and between the pair of rollers and between the pair of rollers. The wire guides that are locked to the wire guide fixing members attached to the front and rear respectively are provided on the same line, and the central wire guide fixing member has a fulcrum that supports one end of the pressing arm. The electrode handle is characterized in that a pressure handle capable of tilting outward is provided on a motor on which the pressure portion at the other end of the arm is located, via a fulcrum that tightens and loosens the pressure portion. It is an object to provide a Ya feeder.

[0009]

According to the present invention, in the electrode wire feeding device, the pressure handle is attached to the motor at a position on the wire guide fixing member on the inlet side and the outlet side of the device, and the pressure handle is outwardly moved at the lower fulcrum. Inserting the electrode wire so that it can be tilted, tightening between the fixed roller and the pressure roller during feeding,
Since the relaxation is performed, the operation is simple and can be performed in a short time even in the work of inserting the wire, feeding the wire, and replacing the wire with a wire having a different diameter.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described in more detail. In the figure, parts having the same functions as those of the conventional feeding device shown in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a vertical cross-sectional view showing a state in which a wire is inserted from an electrode wire reel into the feeder of the present invention, and a fixed roller and a pressure roller are fastened to each other to feed the wire to a welding machine or the like. FIG. 2 is a longitudinal sectional view showing a state in which the fixed roller and the pressure roller are loosened and the wire is inserted between the rolls. In the figure, an electrode wire W is provided at the center of the feeder A.
Wire guides 9, 10 and 11 having wire holes at the center from the inlet side to the outlet side in the feeding direction of are fixed by respective wire guide fixing members 12, 13 and 14, and between the wire guides 9 and 10. A first fixing roller 5 having a groove through which the electrode wire W passes and a first pressure roller 7 are provided to face each other, and a second fixing having a groove through which the electrode wire W also passes between the wire guides 10 and 11. The roller 6 and the pressure roller 8 are provided so as to face each other. The gears 5a and 6a of the first and second fixed rollers 5 and 6 are included in the drive roller 4 that rotates on the shaft 3 of the motor 2.
In addition to engaging with a, the gears 7a and 8a of the first and second pressure rollers 7 and 8 are engaged with the first and second fixed rollers 5 and 6 by the rotation of the drive roller 4. As the first and second pressure rollers 7 and 8 rotate, the first and second pressure rollers 7 and 8 are pulled out from the wire reel 26, and the wire guide 9 on the inlet side is provided.
The electrode wire W guided through the hole is passed through the central wire guide 10 and the wire guide 11 on the outlet side, and is guided to a welding machine or the like.

The first and second pressure rollers 7 and 8 which engage with the first fixed roller 5 and the second fixed roller 6 and rotate, are formed integrally with the pressure arms 16 and 17, respectively. One end is supported by a fulcrum 18 provided on the wire guide fixing member 13 by a rivet or the like, and the other end is formed along the upper part of the frame 15 to form flat pressing portions 16a, 17a.
Fixed in a state in which the pressure can be changed by pressure pieces 31c and 32c such as nuts screwed to the shaft portions 31b and 32b of the pressure handles 31 and 32 attached to the motor 2 so as to be located above them. Has been done.

The structure and function of this pressure handle will be described with respect to one pressure handle 31.
The shaft portion 31b below the grip portion 31a is threaded, and a pressure piece 31c such as a nut is screwed to the lower portion.
In addition, the wire guide 9 on the inlet side is provided below the shaft portion 31b.
Has a fulcrum 31d fixed by a fixing member 19 provided on a fixing member 12 for fixing the pressure handle 31 so that the pressing handle 31 can be tilted outward as shown in FIG. Has become. When tilted outward, the pressure piece 31c such as a nut is disengaged from the pressure portion 16a of the pressure arm 16, so that the pressure arm 16 is supported only by the fulcrum 18 at one end, and the pressure arm 16 is moved upward. Since the operation of the pressure arm 16 is free,
Since a gap can be maintained between the pressure roller 7 and the first fixed roller 5, it is possible to easily replace or insert wires having different diameters in a short time. The pressure piece 31c such as a nut is for finely adjusting the height from the fulcrum 31d by the screw of the shaft portion 31b, and the wire is passed through one groove between the first fixed roller 5 and the first pressure roller 7. When tightening, the pressing portion 16a of the pressing arm 16 can be adjusted by the pressing piece 31c such as a nut according to the wire diameter. In the pressure handle 32, 32a is a grip portion, and 32b is
Is a shaft portion, 32c is a pressing piece such as a nut, 32d is a fulcrum, and 33 is a fixing member of the fulcrum 32d.

A method of feeding the electrode wire W to a welding machine or the like by using the electrode wire feeding device A of the present invention having the above-mentioned structure will be described. First, the upright pressure handle on the inlet side shown in FIG. Tilt 31 outward with the fulcrum 31d as an axis, as shown in FIG. As a result, the pressing piece 31c of the pressing handle 31 is disengaged from the pressing portion 16a of the pressing arm 16,
Since the pressure arm 16 integrated with the first pressure roller 7 is supported only by the fulcrum 18 at one end thereof, it is possible to operate upward, and the first fixed roller 5 and the first pressure roller 7
There will be a gap between them. Thus wire reel 2
6, the electrode wire W is pulled out, its tip is inserted into the hole of the wire guide 9 on the inlet side, and is passed through the groove of the fixed roller 5 between the first fixed roller 5 and the first pressure roller 7, and the central wire guide 10 is inserted. Through the hole.

Next, the upright pressure handle 32 on the outlet side is tilted outward as shown in FIG. 2 around the fulcrum 32d supported by the fixing member 33 as an axis to press the pressure piece 32c of the pressure handle 32. Is removed from the pressing portion 17a of the pressing arm 17 to provide a gap between the second fixed roller 6 and the second pressing roller 8. Then, the tip of the electrode wire W that has come out of the central wire guide 10 is passed through the groove of the second fixed roller 6,
Further, it is inserted into the hole of the wire guide 11 on the outlet side. After that, both the pressure handles 31 and 32 that have been tilted are returned to the upright state as shown in FIG. 1 and the space between the first fixed roller 5 and the first pressure roller 7 and between the second fixed roller 6 and the second pressure roller 8 is increased. Between the pressurizing pieces 31c, 32 by operating the grip portions 31a, 32a of both pressurizing handles as needed.
The pressing portion 1 of the pressing arms 16 and 17 depending on the wire diameter at c
6a and 17a are pressed to adjust the fastening.

After the insertion work of the electrode wire W in the feeder A is completed in this way, when the motor 2 is rotated to rotate the drive roller 4 clockwise, the gears 4a and 5a, 6a are engaged. Causes the first and second fixed rollers 5 and 6 to rotate counterclockwise, and the first and second pressure rollers 7 and 8 to rotate clockwise to move the electrode wire W passed through the groove of the roller from the wire guide 11 on the outlet side. It can be sent to welding equipment. At this time,
The wire feeding speed may be adjusted by controlling the rotation speed of the motor 2 to control the rotation speed of the gear 4a of the drive roller 4.

In the above-mentioned embodiment, the shaft is screwed as the pressing handle, but the shaft may be a spring to press the pressing piece, or the pressing piece may be a leaf spring. Good.

[0018]

As described above, in the electrode wire feeding device of the present invention, when the wire is inserted between the fixed roller and the pressure roller, the gap is maintained to the outside of the pressure handle on the inlet side and the outlet side. By tilting the wire, it is possible to easily feed the wire to the welding equipment, replace the wire having a different diameter, and feed the wire within a short time.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an electrode wire feeding device of the present invention.

FIG. 2 is a vertical cross-sectional view showing a state of the electrode wire feeder of the present invention when the wire is inserted.

FIG. 3 is a vertical sectional view of a conventional electrode wire feeding device.

[Explanation of symbols]

 2 motor 4 drive roller 5 first fixed roller 6 second fixed roller 7 first pressure roller 8 second pressure roller 15 frame 16 pressure arm 17 pressure arm 18 fulcrum 26 wire reel 31 pressure handle 32 pressure handle W electrode wire

Claims (1)

[Claims] 1. A frame is provided with two fixed rollers that rotate by engaging with a drive roller provided on a shaft of a motor, and the two fixed rollers are integrally formed with a pressure arm at the upper portions facing each other. A pressure roller is provided with an electrode wire insertion gap maintained, and an electrode wire insertion groove is provided in at least one of the fixed roller and the pressure roller, and a wire guide is attached to the frame between the pair of rollers and before and after the pair of rollers. A wire guide locked to the fixing member is provided on the same line, and a central wire guide fixing member has a fulcrum for supporting one end of the pressing arm, and the pressing portion at the other end of the pressing arm is An electrode wire feeding device, characterized in that a pressure handle capable of tightening and loosening the pressure portion is provided on a motor located therein and is tiltable outward through a fulcrum.