JPH05285659A - Wire feeder for torch welding - Google Patents

Abstract

PURPOSE:To always maintain the wire feeder clean and to prevent overheat of a motor by providing a fan to execute forced ventilation for a head of a roller for feeding a wire and a ventilating window. CONSTITUTION:The wire 17 is introduced into a box 2, passed through a, through-hole 11 in an output axis 3 of the hollow motor 1, straightened while being pulled by the roller 5, passes the roller 5 in the head 6 end is sent to a torch cable 6 from a connecting member 15. During operation of the motor 1, since air around the head 6 of the roller 5 for feeding the wire is sucked by the fan 13 for suction in accordance with rotation of the output axis 3 and the inside of the head 6 is subjected to forced ventilation, the air is discharged accompanied by dust, etc., from the ventilating window 14 for discharge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torch welding wire feeder for feeding a welding wire by a roller.

[0002]

2. Description of the Related Art Conventionally, there is a torch welding wire feeder as shown in FIG. That is, 31 is a hollow motor, the output shaft 32 of the motor 31 penetrates through the center of the motor, and a screw 33 is formed at one end of the output shaft 32, and the screw 33 is attached to the screw 33. A head 35 having a wire feeding roller 34 is screwed on. A through hole 36 for wire feeding is formed in the center of the output shaft 32 in the axial direction. In addition, 37 is a track as shown by a virtual line.
Reference numeral 39 is a connecting member for connecting the cable 38, and 39 is the output shaft 32 when the head 35 is screwed onto the output shaft 32.
It is a notch surface for fixing the output shaft for preventing rotation of the shaft.

And, such a torch welding wire is used.
In the feeding device of the above, a wire 40 from a wire reel (not shown) passes through a through hole 36 formed in the output shaft 32 of the hollow motor 31 and is pulled and corrected by the roller 34. It passes through the roller 34 in the head 35, is sent from the connecting member 37 to the torch cable 38, and is used for torch welding.

[0004]

By the way, in the torch welding wire feeder as described above, wire dust is generated when the wire 40 is pulled and straightened by the roller 34. However, this may make it impossible to smoothly operate the feeder for the accumulated wire in the head 35. Therefore, it is necessary to regularly clean the inside of the head 35 with compressed air or the like.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to forcibly ventilate the inside of the head to prevent wire-dust and the like in the head. An object of the present invention is to provide a wire feeding device for torch welding which can automatically remove and smoothly feed the wire.

[0006]

In order to achieve the above object, a feed device for a torch welding wire according to the present invention is a wire which is axially centered on an output shaft which penetrates a central portion of a hollow motor. -A feed device for a torch welding wire in which a feed through-hole is bored and a screw formed at one end of the output shaft is screwed with a head of a feed roller. A suction fan is placed on the motor side wall of the wire feeding roller head, or a blower fan is placed inside the hollow motor, and a ventilation window is opened in the head. It is a thing.

[0007]

[Operation] Torch welding wire constructed as described above
In the feeding device, the head of the wire feeding roller rotates with the rotation of the output shaft during the operation of the motor, and the suction fan operates. Then, the air sucked by the suction fan enters the head of the wire feeding roller, and while forcedly ventilating in the head, the wire is entrained with dust and the like through the exhaust ventilation window. Is discharged.

Further, in the invention of claim 2, during the operation of the motor, the blower fan operates in accordance with the rotation of the output shaft,
The air sucked from one ventilation window cools the inside of the motor while being discharged from the other ventilation window through the ventilation fan, and the discharged air immediately blows the head of the wire feeding roller. While entering the inside and forcibly ventilating the inside of the head, the wire-dust and the like are entrained to remove the wire-dust and the like from the inside of the head.

[0009]

Embodiments of the present invention will be described with reference to FIGS. First, in the first embodiment of FIGS. 1 and 2,
Reference numeral 1 is a hollow motor installed in a box 2, and an output shaft 3 of the hollow motor 1 penetrates the center of the motor. A screw 4 is formed on one end of the output shaft 3, and a head 6 having a wire feeding roller 5 is formed on the screw 4.
The boss portion 7 is screwed.

The other end of the output shaft 3 penetrates the inside of the motor 1 toward the side wall 8 opposite to the head 6 side, projects outward from the side wall 8, and outputs to the projecting portion 9. A notch surface 10 for fixing the shaft is formed, and a through hole 11 for wire feeding is formed at the center of the output shaft 3 in the axial direction.

A suction fan 13 is arranged on the side wall 12 of the head 6 of the wire feeding roller 5 on the motor side. I am trying to send it within 6. Reference numeral 14 denotes a ventilation window for discharging the air sent into the head 6. In addition, 15 is a torch cable 1 as shown by a virtual line.
It is a connecting member for connecting the six.

In the torch welding wire feeder having the above structure, the wire reel (not shown) is used.
When the wire 17 from the ruler is fed into the box 2, first, from the protruding portion 9 to the through hole 11 of the output shaft 3 in the hollow motor 1.
It passes through the roller 5 in the head 6, is straightened by being stretched by the roller 5, passes through the roller 5 in the head 6, is sent from the connecting member 15 to the torch cable 16, and is used for torch welding. is there.

While the motor 1 is operating, the head 6 of the wire feeding roller 5 is rotated with the rotation of the output shaft 3 and the suction fan 13 is operated. Air is sucked by the suction fan 13 and enters the head 6 of the wire feeding roller 5, and while the air is forcedly ventilated in the head 6, wire-dust and the like are accompanied by an exhaust ventilation window. It is discharged from 14.

Next, in the second embodiment shown in FIG. 3, the first
Since the position of the fan for forced ventilation differs from that of the embodiment and the rest of the configuration is substantially the same, the same members are designated by the same reference numerals and the description thereof is omitted.

A blower fan 18 is fixedly arranged on the output shaft 3 in the hollow motor 1 so as to operate with the rotation of the output shaft 3. Further, 19 is a ventilation window for suction which is opened on the side wall 8 of the hollow motor 1.
Reference numeral 0 is a ventilation window provided for exhaust on the other side wall 21 of the hollow motor 1, and reference numeral 22 is a ventilation window opened on the side wall 12 of the roller head 6 on the motor side.

Therefore, during operation of the motor 1, the output shaft 3
The blower fan 18 is operated in accordance with the rotation of the fan 1, and the air sucked from the suction ventilation window 19 is forcibly cooled in the motor 1 while being discharged from the other ventilation window 20 through the blower fan 18. The air discharged from the ventilation window 20 is immediately transferred to the ventilation window 2
2 into the head 6 of the wire feeding roller 5,
Wires and dust are entrained during forced ventilation in the head 6 and the wires and dust from the inside of the head are removed from the ventilation window 14 for exhaust.

[0017]

Since the present invention has the above-mentioned structure, the air sucked by the suction fan during the operation of the motor is passed through the suction fan to the inside of the head of the wire feeding roller. During the forced ventilation in the head, the wire is accompanied by dust and is discharged to the outside of the head from the ventilation window for exhaust, so the inside of the head of the wire feeding roller is always clean. It is maintained and the wire can be fed smoothly at all times without regular cleaning.

Further, in the invention of claim 2, while the motor is in operation, the cooling air sucked by the blower fan passes through the blower fan and is discharged from the ventilation window for exhausting the inside of the motor. Force cooling. Therefore, overheating of the motor is prevented and the rotation of the motor becomes stable. Moreover,
The exhaust gas discharged from the motor immediately enters the head of the wire feeding roller, and the wire dust is entrained in the head while the air is forcedly blown inside the head. Therefore, the wire can be fed smoothly at all times.

[Brief description of drawings]

FIG. 1 is a side view of a torch welding wire feeder according to the present invention.

FIG. 2 is a sectional view taken along the line E-I of FIG. 1.

FIG. 3 is a side view of another embodiment of the torch welding wire feeder according to the present invention.

FIG. 4 is a side view of a torch welding wire feeder of the conventional example.

[Explanation of symbols]

 1 Hollow Motor 3 Output Shaft 4 Screw 5 Roller 6 Head 11 Through Hole 12 Motor Side Wall 13 Suction Fan 14 Ventilation Window 17 Wire-18 Ventilation Fan 19 Ventilation Window 20 Ventilation Window 22 Ventilation Window

Claims (2)

[Claims] 1. A wire feed through hole is formed in an output shaft passing through a central portion of a hollow motor at an axial center, and a screw formed at one end of the output shaft is used for wire feed. In a torch welding wire feeder to which the roller head of (1) is screwed, a suction fan is arranged on the motor side wall of the wire feeding roller head and A torch welding wire feeder characterized by having an exhaust ventilation window in the head. 2. An output shaft penetrating the center of the hollow motor is provided with a through hole for wire feeding in the axial center, and a screw formed at one end of the output shaft is used for wire feeding. In a torch welding wire feeder having the head of the roller attached thereto, a blower fan is arranged on the output shaft in the hollow motor, and both side walls of the motor and the roller. The torch welding wire feeder is characterized by opening ventilation windows on both side walls of the head.