JP2572630Y2 - Consumable electrode welding torch - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a consumable electrode type welding torch. 2. Description of the Related Art Conventionally, when performing fillet welding with a consumable electrode type welding torch, as shown in a perspective view of FIG.
The welding power source 2 is connected to the base material 1 to be fillet-welded, the welding torch 3 is opposed to the base material 1, and the wire 5 is projected from the tip 4 at the tip of the welding torch 3 so that the gap between the tip of the wire 5 and the base material 1 Arc 6 is generated in the welding torch 3
The cable 7 connecting the base of the welding power source 2 and the welding power source 2 accommodates the wire 5, the power supply nozzle 8, and the shield gas supply pipe 9, and the mechanical torsion mechanism 42
And is supported by the support arm 41 via the. [0003] With such an apparatus configuration, first, the shielding gas is supplied from the shielding gas supply pipe 9 to the chip 4.
When a no-load voltage is applied from the welding power source 2 and the wire 5 is supplied to the base material 1 through the chip 4, an arc 6 is generated at the moment when the base material 1 and the tip of the wire 5 come into contact with each other. Then, the surface of the base material 1 around which the arc 6 is generated by the arc heat is melted, and the tip of the wire 5 is also melted by the arc heat and moves to the molten portion of the base material 1. At the same time, when the support arm 41 is moved in the welding line direction of the base material 1, a weld bead 43 is formed. However, at this time, it is necessary to swing the arc 6 in order to secure the leg length of the welding bead 43. Therefore, the welding torch 3 must be welded while swinging by the swinging mechanism 42.
When the wire length is about 0A and the wire diameter is 1.6 mm, it is necessary to secure the leg length of 5 to 6 mm. Therefore, the swing of the welding torch 3 needs to swing about 2 to 5 mm at the tip of the wire 5. Usually, when the welding speed is 300 mm / min, the swing cycle is 1/1.
It is about 0 sec. On the other hand, there is a strong demand for higher efficiency of the welding operation at present, and it is required to increase the welding speed to increase the efficiency. To further increase the welding speed, it is necessary to further increase the swing. However, it is difficult to swing the welding torch 3 at high speed because the welding torch 5 is heavy, the cable 7 is hard, and the swing mechanism 42 has a mechanical limit. In addition, if the welding torch 3 is to be swung at a high speed, the swinging mechanism 42 becomes large and not only deteriorates the welding work significantly, but also a peripheral jig for supporting the large swinging mechanism 42 becomes large. And the price may increase. [0004] The present invention has been proposed in view of such circumstances, and can swing the arc at high speed, can achieve high efficiency of welding, Further, it is an object of the present invention to provide a consumable electrode type welding torch which is a swinging mechanism having no mechanical movement and can simplify the swinging mechanism and facilitate a welding operation. [0005] According to one aspect of the present invention For this purpose, soluble
A wire supply nozzle (14) , which is attached via a flexible member (13) to the tip of the base of the contact torch (3) and has a tip (4) attached to the tip thereof, faces the wire supply nozzle (14) . a pair disposed on both sides permanent magnets (15a), and (15b), each of the permanent magnets (15
a central axis thereof is above the permanent magnets with coil centers are identical to exist a small clearance on the outside of (15b) (15
a) and a pair of electromagnetic coils (16a) and (16b) disposed so as to be perpendicular to the polar surfaces of (15b) , and an alternation for applying an alternating voltage to the electromagnetic coils (16a) and (16b). comprising a voltage generator (19), the pair of electromagnetic coils (16a), said upon applying an alternating voltage to the (16b) each of the electromagnetic coils (16a), which paired with (16b)
One between the facing permanent magnets (15a) and (15b)
Attractive force, the other anti-repellent force is generated at the same time, thereby characterized in that as the wire feed nozzle (14) swings. In the consumable electrode welding torch of the present invention, by applying an alternating voltage to the electromagnetic coil, an attractive force and a reaction force are repeatedly generated between the electromagnetic coil and the permanent magnet in accordance with the input voltage of the alternating voltage. I do. Therefore, the wire supply nozzle to which the permanent magnet is fixed swings due to repetition of the attractive force and the reaction force. By changing the cycle of the alternating voltage, the speed of the swing can be controlled. FIG. 1 is a longitudinal sectional view of a welding torch according to an embodiment of the present invention, and FIG. 2 is a front view showing a mode of use of the welding torch. 3
FIG. 4 is an explanatory view for swinging operation of the main welding torch. First, in FIGS. 1 and 2, reference numerals 1 to 9 denote the same members as in FIG. 4, and the torch base 10 is fixed to a support arm 12 by a mounting bolt 11. A wire supply nozzle 14 is attached to a tip of the torch base 10 via a spring 13, and a tip 4 is attached to a tip of the wire supply nozzle 14, and a wire 5 protrudes from the tip. A pair of permanent magnets 15a, 15 having a length of 20 mm, a width of 10 mm and a thickness of 3 mm are provided on opposite sides of the wire supply nozzle 14.
b are respectively fixed. This pair of permanent magnets 15
a and a pair of electromagnetic coils 16a and 16b such that the center of the coil coincides with the outer surface of each of the permanent magnets 15a and 15b and the center axis thereof is perpendicular to the polar surfaces of the permanent magnets 15a and 15b.
Is disposed, and each of the electromagnetic coils 16a and 16b has
Each of the iron cores 17 is inserted, and a screw 18 for adjusting the swing width by entering and exiting is incorporated therein. Each of the electromagnetic coils 16a, 16b is connected to an alternating voltage generator 19. In such an apparatus, the operation until the arc 6 is generated is the same as that of the conventional apparatus. Then, the arc 6 is swung to secure the leg length. The swing operation will be described with reference to FIG. First, an alternating voltage is applied from the alternating voltage generator 19 to the electromagnetic coils 16a and 16b. Thus, a reaction force and an attractive force are repeatedly generated between the electromagnetic coil 16a and the permanent magnet 15a and between the electromagnetic coil 16b and the permanent magnet 15b according to the alternating voltage, and the wire supply nozzle 14 is swung by this force. Hereinafter, the state in which the reaction force and the attractive force act will be specifically described. The polarity of the permanent magnet 15a facing the electromagnetic coil 16a is defined as an S pole, and the polarity of the permanent magnet 15b facing the electromagnetic coil 16b is defined as an N pole. A positive voltage is input to the electromagnetic coils 16a and 16b. Here, +24 V is input because the electromagnetic coils 16a and 16b have a rating of 24V. Since the electromagnetic coils 16a and 16b are installed in advance so that the polarities are symmetrical, the electromagnetic coils 16a and 16b on the side facing the permanent magnets 15a and 15b are arranged.
6b becomes the same polarity, and when + 24V is input,
Electromagnetic coil 16 facing permanent magnets 15a, 15b
The polarities of a and 16b are set to be S poles. As a result, +24 V is applied to the electromagnetic coil 16.
When they are input to the a and 16b, while the electromagnetic coil 16a and the permanent magnet 15a are facing each other, they become S poles with each other, so that a reaction force is generated. On the other hand, the electromagnetic coil 16b and the permanent magnet 15
Since there are an N pole and an S pole between b and b, an attractive force is generated. Accordingly, the wire supply nozzle 14 is eccentric to the left from the spring 13 as shown in FIG. Conversely, when -24 V is input from the alternating voltage generator 19, an attraction is generated between the permanent magnet 15a and the electromagnetic coil 16a as an S pole and an N pole, and N is applied between the permanent magnet 15b and the electromagnetic coil 16b. Reaction force occurs because it becomes poles,
As shown in FIG. 3B, the wire supply nozzle 14 is eccentric to the right. Therefore, the alternating voltage is changed to the electromagnetic coils 16a, 16
When inputting to b, the wire supply nozzle 14 swings. As described above, in the mechanism of the welding torch of the present invention,
There is no mechanical movement, and it can swing at high speed. By changing the period of the alternating voltage, the swing speed can be increased and the swing can be made up to 100 Hz. Further, the swing width can be adjusted by inserting and removing the screw 18, and the maximum swing width at the tip of the tip 4 can be set to 2 mm. Thus, when performing fillet welding using such a welding torch, a leg length of 5 to 6 mm, which is a sound weld bead shape, can be ensured even at a welding speed of 2000 mm / min. In summary, according to the present invention, a welding torch is provided.
(3) together with the attached via a flexible member (13) to the tip of the base and tip wire feed nozzle (14) is mounted (14) at its front end, opposite sides of the wire feed nozzle (14) Pair of permanent magnets arranged in
(15a), (15b) and the above-mentioned respective permanent magnets (15
a) and (15b), the center of the coil coincides with a small gap outside, and the center axis thereof is aligned with each of the permanent magnets (15).
a) and a pair of electromagnetic coils (16a) and (16b) disposed so as to be perpendicular to the polar surfaces of (15b) , and an alternation for applying an alternating voltage to the electromagnetic coils (16a) and (16b). comprising a voltage generator (19), the pair of electromagnetic coils (16a), said upon applying an alternating voltage to the (16b) each of the electromagnetic coils (16a), which paired with (16b)
One between the facing permanent magnets (15a) and (15b)
Attractive force, the other anti-repellent force is generated at the same time, by thereby and to the wire supply nozzle (14) is swung, it can swing the arc at high speed, high efficiency of the welding The present invention is industrially extremely useful because a consumable electrode type welding torch that can be achieved and has no mechanical movement, so that the oscillating mechanism can be simplified and the welding operation can be facilitated, is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of one embodiment of a consumable electrode type welding torch of the present invention. FIG. 2 is a front view showing a usage mode of the present welding torch. FIG. 3 is an explanatory diagram for a swing operation of the main welding torch. FIG. 4 is a perspective view showing a usage mode of a conventional welding torch. [Description of Signs] 1 Base material 2 Welding power source 3 Welding torch 4 Tip 5 Wire 6 Arc 7 Cable 8 Power supply nozzle 9 Shield gas supply pipe 10 Torch base 11 Mounting bolt 12 Support arm 13 Spring 14 Wire supply nozzle 15a, 15b Permanent magnet 16a, 16b Electromagnetic coil 17 Iron core 18 Screw 19 Alternating voltage generator

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23K 9/30 B23K 9/022

Claims (1)

(57) [Claims for utility model registration] A wire supply nozzle (14) attached to the tip of the base of the welding torch (3) via a flexible member (13) and having a tip (4) attached to the tip. When, the wire pair of permanent magnets disposed on opposite sides of the supply nozzle (14) (15a), and (15b), each of the permanent magnets (1
5a) and (15b), the center of the coil coincides with a small gap outside, and the center axis of the coil coincides with each of the permanent magnets (1).
5a) and a pair of electromagnetic coils (16a) and (16b) disposed so as to be perpendicular to the polar surfaces of (15b) and an alternating coil for applying an alternating voltage to the electromagnetic coils (16a) and (16b). comprising a voltage generator (19), the pair of electromagnetic coils (16a), each electromagnetic coil upon application of an alternating voltage to (16b) (16a), and this (16b)
Opposing permanent magnets (15a), and characterized in that as one is attractive force, the other anti-repellent force is generated at the same time, whereby the wire feed nozzle (14) swings between (15b) Consumable electrode welding torch.