JPS6032546B2 - Welding torch mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a welding torch attachment device that is applied to the wrist of an industrial robot.

This type of robot is equipped with a wrist mechanism at the tip of an arm member extending forward from the robot body, consisting of a rotating case with a rotating shaft extending forward and a pair of subrocket bodies on both sides of the rotating case. There is also a type in which a separately prepared welding torch is attached to this, but in this case, the torch is simply attached to the front of the rotating shaft via a mounting plate. Generally speaking, such a device has the disadvantage that the mounting part tends to be large in size, and the core wire is likely to be kinked or bent during operation.The present invention solves the above disadvantage. The purpose is to obtain a device in which a pair of sprocket bodies protrude outward from the tip of an actuating arm member of a robot body, and one of the sprocket bodies is rotatably supported by the actuating arm member. ``In a welding torch mounting device in which a welding torch body is attached to the wrist mechanism, the wrist mechanism includes a rotating case and a rotating shaft supported within the rotating case and rotated by the other sprocket body, A central core wire guide extending in the front-rear direction along the rattan core of the rotating shaft is provided in the rotating case, and the core wire guide also passes through the central core wire guide member. It is characterized by being attached to the end of the shaft.

An example of implementing the present invention will be explained with reference to the attached drawings.

The drawing shows the arm part that extends forward from the robot body and other fixed parts.
a rotating case 4 having a rotating shaft 3 fixed therein and extending forward along the parallax line X-X of the arm tortoise;
The wrist mechanism A is provided with a pair of sprocket bodies 596 on both outer sides thereof. More specifically, the rotating case 4 and the pair of sprocket bodies 5, 6 are rotatably supported around a scale line Y-Y perpendicular to the axis x1X, and the sprocket bodies 5, 6 are rotatably supported. On the other hand, for example, the main body 5 is connected to the case 4 with a pin 7 or the like, and the other side 6
is provided with a bevel gear 9 on an inwardly extending shaft 8 which engages with the bevel gear 10 at the tail end of the rotating shaft 3, thus preventing the rotation of one of the two sprocket bodies 6, e.g. According to the case 4, the rotary shaft 3 is rotated downwardly along the axis Y-Y together with the case 4, and according to the rotation of the other 6, the rotary shaft 3 is rotated downwardly through the bevel gears 9 and 10. Thus, the rotating shaft 3 is rotated about the axis X--X.
In the drawings, reference numerals 11 and 12 indicate chains that drive the sprocket bodies 5 and 6. According to the present invention, the rotary shaft 3 is provided with a central core wire guide 13 extending in the front-rear direction along the axis X-X, and a central core wire guide member 14 that fits the guide 13 on the front surface of the welding shaft 3 is provided. Torch body 15
The welding torch main body 15 has a power supply member on the outer periphery connected to the tail end with a cap nut 16. 1
7, which is superimposed on the front surface of the rotary shaft 3 via an insulating material 18 in the power supply section 17 and fixed thereto with a screw 19 or the like.

In the drawing, reference numeral 20 indicates a rotary case on the outer periphery, 21 indicates a pin that prevents rotation of the case 20, and 22 indicates a gas supply port that opens on the other side. I tried to lean on the side. Incidentally, the core wire guide 13 described above extends rearward and extends over the flexible conduit cable 24 at the rear thereof.
To explain its operation, as one sprocket body 5 rotates, the rotating shaft 3 extends forward from the torch body 15.
, the rotary shaft 3 is moved up and down about the dowel line Y-Y, and as the other sprocket body 6 rotates, the rotating shaft 3 rotates about the axis x-x (accompanied by the torch body 15), thus Appropriate movement can be given to the torch body 15, and in this case, the core wire is guided forward via the core wire guide 13 extending along the sea bream line x-x at the center and the core wire guide member 14. There is no tearing or bending. In this way, according to the present invention, the wrist mechanism provided at the tip of the actuating arm member 1 of the robot body has a rotary shaft 3 mounted in the rotating case 4 of the wrist mechanism along the axis of the rotating shaft 3 supported by the case 4. The welding torch body 15 is provided with a central core wire guide 13 extending in the front-rear direction, and the torch main body 15 is attached to three rotating shafts via a central core wire guide member 14 that fits the core wire guide 13. The installation is done compactly and the torch body 15 is not enlarged.The core wire is supplied to the torch main body 15 by being guided along the axis of the rotating shaft 3 in the rotating case 4 and replaced by the rotation of the wrist mechanism. This has the effect of ensuring smooth supply without any problems.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of an example of the device of the present invention, FIG. 2 is a sectional view taken along the line 0--B, and FIG. 3 is a front view thereof. i...Arm member, X-X...Double line, 3
...Rotating shaft, 4...Rotating case, 5,
6...Sprocket body, A...Wrist mechanism, 13...Core wire guide, 14...
Core wire guide member, 15...Welding torch body. Figure 3 Ship chart N Ship

Claims (1)

[Claims] 1 A pair of sprocket bodies protrude outward from the distal end of the actuating arm member of the robot body, a rotating case rotatably supported by the actuating arm member by one of the sprocket bodies, and a rotary case supported within the rotating case. A welding torch mounting device includes a wrist mechanism including a rotating shaft rotated by the other side of the sprocket body, and a welding torch main body is attached to the wrist mechanism. Attachment of a welding torch characterized in that a central core wire guide extending in the front-rear direction along the welding torch is provided, and the welding torch main body is attached to the rotary shaft end via a central core wire guide member communicating with the core wire guide. Device.