JPH0560680U - Welding chip automatic extractor - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a welding tip automatic extractor that can automatically extract the tip attached to the welding gun simply by teaching the robot the movement of the welding gun device. It is what [Structure] The tip support rod 2 is formed with a groove 5 through which the tip extracting rod 4 can slide up and down, and the rear support column 3 is provided with a slider.
7 is slidably supported in the front-back direction, and the slider
A rear end of the tip extracting rod is pivotally attached 8 to the front end of the rod, a long hole 11 for holding a tip is formed at the front end of the tip extracting rod, and a stopper abutting against the front surface of the front support column at an intermediate portion. Welding chip automatic extractor equipped with 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic welding tip extractor capable of automatically extracting the tip of a welding gun device for a robot.

[0002]

[Prior Art]

 When the tip of the robot welding gun device is worn or damaged, it is necessary to replace the tip. For this reason, the tip attached to the welding gun was manually extracted using a hand tool or the like.

[Problems to be solved by the device]

By the way, in the above-mentioned conventional techniques, there is a problem that labor is required and labor is involved because human assistance is required.

The present invention has been made in view of the above problems of the conventional technology, and the purpose thereof is to teach the robot the movement of the welding gun device. , We are trying to provide an automatic welding tip extractor capable of automatically extracting the tip attached to the welding gun.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the welding tip automatic extractor according to the present invention has a groove in which a tip extracting rod can slide up and down formed in a front support, and a rear support which supports a slider so as to be slidable in the front-rear direction. Then, the rear end of the chip extracting rod is pivotally attached to the front end of the slider, a long hole for holding chips is formed at the front end of the chip extracting rod, and the front end of the front column is abutted at the middle part. The feature is that a stopper is provided.

[0006]

In the welding gun device having the tip to be replaced, the tip is held in the long hole for holding the tip at the front end of the tip extracting rod by the movement taught by the robot, and then the robot moves the welding gun apparatus. By making a linear movement downward, the long hole causes the tip to be slightly twisted and then separated from the welding gun device.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 1 is a base of an automatic welding chip extracting machine, and a front support 2 and a rear support 3 are erected on the base 1.

A groove 5 is formed in the front support column 2 so that the tip extracting rod 4 can slide up and down. Further, one end of a spring 6 is locked to the upper end of the front support 2, and the other end of the spring 6 is locked to the tip extracting rod 4 so that the tension can be adjusted.

A slider 7 is supported on the rear column 3 so as to be slidable in the front-rear direction, and a rear end of the tip extracting rod 4 can be bent by a shaft 8 at a front end of the slider 7. One end of a spring 9 is locked to the rear end of the slider 7, and the other end of the spring 9 is engaged with a bracket 10 extending rearward from the rear column 3 so that tension can be adjusted. It has been stopped.

Further, a long hole 11 for holding a chip is formed at the front end of the chip extracting rod 4, and the long hole 11 has a large diameter 12 at the rear portion and a reduced diameter 13 at the front portion. ing. Further, a stopper 15 is provided at an intermediate portion of the tip extracting rod 4 so as to be constantly in contact with the guide curved surface 14 formed on the front surface of the front support 2.

In the welding tip automatic extractor having the above-mentioned configuration, when the position shown in FIG. 4, that is, the tip 16 on the rod side and the tip 17 on the arm side face each other as shown in the figure. First, the robot guides the welding gun in the a direction (lateral direction) and positions the tip 16 directly above the large diameter 12 of the elongated hole 11. Then, the groove between the tip 16 and the shank is guided in the b direction (downward) to be positioned within the large diameter 12 of the elongated hole 11. Further, the groove between the tip 16 and the shank is guided in the c direction (transverse direction) and is positioned within the reduced diameter 13 of the elongated hole 11 to obtain the state of FIG.

When the robot vertically lowers the welding gun in the d direction (downward) from this state, the front end of the tip extracting rod 4 is pressed downward, and the tip extracting rod 4 resists the tension of the spring 6. The slider 7 descends in the groove 5, and the slider 7 moves forward against the tension of the spring 9 due to the descending inside of the groove 5, but the stopper 15 guides the front surface of the front column 2 while the tip extracting rod 4 is moving. It is always in contact with the curved surface 14. Then, the tip 16 is disengaged from the welding gun while being slightly twisted by the reduced diameter 13 portion of the elongated hole 11 by the downward movement of the tip extracting rod 4 (see FIG. 6). When the tip 16 is extracted and the welding gun is separated from the welding tip automatic extractor, the tension of the springs 6 and 9 returns the tip extracting rod 4 and the slider 7 to their original positions (the state shown in FIG. 1).

Further, when the tip 17 on the arm side is pulled out, first, the robot guides the welding gun in the e direction (oblique direction) to make the tip 17 in a vertical state, and then in the f direction directly below the large diameter 12 of the long hole 11. (Horizontal direction), then into the large diameter 12 of the long hole 11 in the g direction (upward direction) and further into the reduced diameter 13 of the long hole 11 in the h direction (horizontal direction). When the tip 17 is lowered substantially vertically in the j direction (downward), the tip 17 is disengaged from the welding gun while being slightly twisted by the reduced diameter 13 portion of the elongated hole 11.

[0014]

[Effect of the device]

 According to this invention, the tip placed in the long hole of the automatic welding tip extractor can be easily separated from the welding gun by twisting due to the long hole by the robot's substantially vertical descent, and its operation is also easy. It is an excellent automatic welding tip extractor that does not require human power.

[Brief description of drawings]

FIG. 1 is a side view of an automatic welding tip extracting machine according to the present invention.

2 is a cross-sectional view taken along the line YY in FIG.

FIG. 3 is a plan view of an elongated hole at a front end of a tip extracting rod 4.

FIG. 4 is a movement explanatory view of a rod side tip.

FIG. 5 is a diagram for explaining movement of the arm side chip.

1. FIG. 6 is a side view for explaining the operation of FIG.

[Explanation of symbols]

 2 Front stanchion 3 Rear stanchion 4 Tip extraction rod 5 Groove 7 Slider-8 Pivot shaft 11 Long hole 15 Stopper

Claims (1)

[Scope of utility model registration request] 1. A device for extracting a tip of a welding gun device for a robot, wherein a groove for allowing a tip extracting rod to slide up and down is formed in a front support, and a slider is supported on a rear support so as to be slidable in the front-rear direction. A rear end of the tip extracting rod is pivotally attached to a front end of the slider, a long hole for holding a tip is formed at a front end of the tip extracting rod, and a stopper is provided at an intermediate portion so as to abut against a front surface of the front column. Welding chip automatic extraction machine characterized by that.