JPH0735663Y2 - Welding gun support equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a welding gun supporting device for temporarily holding a welding gun in a welding robot when the welding gun is replaced.

[Prior Art] For example, in a welding robot used in an automobile body assembly line, it may be necessary to selectively use different types of welding guns depending on the structure, shape, and the like of the workpiece.

Therefore, in order to remove the welding gun in use from the robot or attach another welding gun to the robot, a welding gun supporting device for temporarily holding these welding guns is required.

Then, in order to meet this demand, support arms are provided on both side surfaces of the welding gun, the support arms are placed on the supporting column, and the positioning pins provided on the supporting arm are fitted into the positioning holes of the supporting column to form the welding gun. There is one that is held at a predetermined position (see, for example, Japanese Patent Laid-Open No. 59-104278).

[Problems to be Solved by the Invention] In such a conventional technique, since the welding gun is supported at two points, it is unstable, and since the positioning pin is aligned with the positioning hole, its mounting is troublesome and precise operation is required. There is a problem of needing it.

The present invention has been made in view of such problems of the conventional technology, and the purpose thereof is to easily mount the welding gun without requiring special consideration for mounting operation. It is an object of the present invention to provide a welding gun supporting device that is capable of supporting the welding gun in a stable manner by supporting the welding gun at three points.

[Means for Solving the Problems] In order to achieve the above object, a welding gun supporting device according to the present invention has a concave groove for supporting a pivot pin arranged on an upper surface thereof and two horizontal grooves below the concave groove. Rails are provided and the positions of locking rods for locking the arms of the welding gun are adjustable between the rails.

[Operation] In order to remove a welding gun in use from the robot or attach another welding gun to the robot, in order to temporarily hold these welding guns on the support device, Fit the pivot pins provided on both sides of the welding gun into the groove provided on the upper surface of the supporting device, adjust the locking rod to match the position of the arm of the welding gun, and weld with the locking rod. Lock gun arm. As a result, the welding gun is supported at three points.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 is a support device for the welding gun 2, and the two support frames 3, 3 are connected to each other by upper and lower parallel rails 4, 5. Grooves 6 and 7 for supporting the welding gun 2 are provided on the upper surface of each support frame 3. Also,
A holding member 9 for holding the locking rod 8 is fixed between the upper and lower rails 4 and 5 so as to be adjustable left and right (see FIG. 2),
An elongated hole 10 is formed in the holding member 9, and the locking rod 8 is fixed through the elongated hole 10 so that the vertical and tilt angles can be adjusted. Further, clampers 11 and 12 that cover the recessed grooves 6 and 7 are provided on the upper surface of each support frame 3 via respective clamp cylinders 13 and links 14.

The welding gun 2 is composed of a pressure cylinder 15, an equalizer 16, a transformer 17, an arm 18, a pressure rod 19, etc., as shown by the phantom line in FIG. The pivot pins 20 and 21 are projected. 22 is a gun changer.

In order to mount the welding gun attached to the robot (not shown) or the welding gun newly attached to the robot on the support device 1, first the clamp cylinders 13 and 13 are used to form the clampers 11 and 12 into the concave grooves 6 and 7, respectively. , The pivot pins 20 and 21 projecting to both side surfaces of the welding gun 2 are fitted into the grooves 6 and 7, respectively, and the locking rod 8 is attached to the arm 18 of the welding gun.
The arm 18 of the welding gun 2 is locked by the locking rod 8 by adjusting so as to match the position. The adjustment means adjusts the left and right positions by moving the holding member 9 between the rails 4 and 5, and adjusts the up and down positions by moving the locking rod 8 in the elongated hole 10 up and down and changing the inclination. is there.

In this manner, with the welding gun 2 supported by the support device 1 at three points, the clamp cylinders 13 and 13 cover the pivot pins 20 and 21 fitted in the concave grooves 6 and 7 with the clampers 11 and 12, respectively. The welding gun 2 is stably held by the supporting device 1.

Therefore, it is advisable to remove the welding gun 2 from the robot or attach the welding gun 2 to the robot in this state.

[Advantage of the Invention] According to the present invention, it is easy to mount the welding gun on the supporting device by simply fitting the pivot pin into the concave groove, so that the mounting operation of the welding gun does not require special consideration. It can be placed on. In addition, the welding gun mounted on the supporting device has the above-mentioned 2
Since it is supported at three points by the three concave grooves and the locking rod, it can be held in a stable state in the supporting device.

[Brief description of drawings]

FIG. 1 is a side view of a welding gun supporting device according to the present invention,
FIG. 2 shows the front view. 1 ... Supporting device, 2 ... Welding gun, 4,5 ... Rail, 6,7
...... Concave groove, 8 ...... Locking rod, 18 ...... Arm, 20,21 ...... Pivot pin.

Claims (1)

[Scope of utility model registration request] 1. A welding gun supporting device for supporting pivot pins provided on both side surfaces of a welding gun, wherein a groove for supporting the pivot pins is provided on an upper surface, and a horizontal groove is provided below the groove. A welding gun supporting device, comprising two rails, wherein the position of a locking rod for locking the arm of the welding gun is adjustable between the rails.