JPH0634880U - X type welding gun - Google Patents

Abstract

(57) [Abstract] [Purpose] To construct a compact and lightweight gun body by installing a pressure cylinder separately from the gun body, and to provide an X-type welding gun that is efficient and easy for welding work. To do. [Structure] In an X-type welding gun in which upper and lower arms 3 and 4 are pivoted at the tip of a bracket 1 attached to a base 2,
A spring 8 for urging the upper and lower arms in the opening direction is arranged in front of the pivot, and a lower arm is arranged in front of the spring.
A lever 14 having the upper surface of the upper arm as a fulcrum 15 is attached to the tip of a support plate 12 fixed to the arm, and a pressure cylinder 16 is installed at the rear end of the lever, separated from the gun body. X-type welding gun in which the pressure rod 18 of FIG.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an X-type welding gun in which a pressure cylinder is installed separately from the gun body.

[0002]

[Prior art]

 Conventionally, in an X-type welding gun, a vertical arm is pivoted at the tip of a bracket attached to the base, and a pressure cylinder is installed in the gun body behind the pivot, and the pressure cylinder is used to raise and lower. I was opening and closing the arm.

[0003]

[Problems to be solved by the device]

 By the way, in the above X-type welding gun, since the pressurizing cylinder is installed in the gun body, there is a problem that the gun body becomes large and the weight also increases.

The present invention has been made in view of the above problems of the prior art. The object of the present invention is to install a pressurizing cylinder separately from the gun body to provide a compact structure. It aims to provide an X-type welding gun that is efficient and easy to carry out by constructing a lightweight and lightweight gun body.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the X-type welding gun according to the present invention has a spring for urging the upper and lower arms in the opening direction in front of the pivots of the upper and lower arms, and in front of the spring. A lever with the upper surface of the upper arm as a fulcrum is attached to the tip of a support plate fixed to the lower arm, and a pressure cylinder is installed at the rear end of the lever separately from the gun body. It is characterized in that the pressure rod of 1 is brought into contact with the pressure rod.

[0006]

With the X-type welding gun configured as described above, when the rear end of the lever is pressed by the pressure rod from the pressure cylinder that is separated from the gun body, the upper part The fulcrum of the arm is pushed and the lower arm is pulled upward, so that the electrodes at the tips of both arms come close to each other for welding work. Further, when the pressure rod is retracted by the pressure cylinder to release the contact with the rear end of the lever, the upper and lower arms are moved in the opening direction by the spring and the electrodes are separated from each other. Further, since the pressurizing cylinder is not installed behind the pivot portion of the gun body, the gun body can be made compact and lightweight by that amount.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of an X-type welding gun according to the present invention, FIG. 2 is a plan view of a main portion thereof, and 1 is a bracket attached to a base 2. An upper arm 3 and a lower arm 4 are pivoted by a shaft 5 at the tip of the bracket 1.

Reference numeral 6 is an electrode attached to the tip of the upper arm 3, 7 is an electrode attached to the tip of the lower arm 4, and the upper and lower arms 3 and 4 are in front of the pivot 5. Is biased in the opening direction by the spring 8. Further, stoppers 9 and 10 are adjustably attached to the upper and lower arms 3 and 4 in the vicinity of the pivot 5, and the respective tips of the stoppers 9 and 10 are directed to a stopper receiver 11 provided on the bracket 1. Has been done.

Support plates 12, 12 are fixed to the lower arm 4 in front of a spring 8, and a pin 13 is installed at a tip of each of the support plates 12, 12 and a lever 13 is attached to the pin 13. The front end of -14 is pivotally attached. The lever 14 constitutes a lever which is bent halfway toward the upper surface of the upper arm, and the bending point of the lever 14 comes into contact with the upper surface of the upper arm to serve as a fulcrum 15.

Reference numeral 16 is a pressure cylinder attached to a board 17 at a position different from the board 2, and is installed separately from the gun body. The tip of the pressure rod 18 from the pressure cylinder 16 is directed toward the rear end of the lever 14. When the pressure rod 18 is extended by the pressure cylinder 16, the tip of the pressure rod 18 is extended. Contacts the rear end of the lever 14 and presses the rear end of the lever 14.

Therefore, when the rear end of the lever 14 is pressed by the pressure rod 18 from the pressure cylinder 16, the fulcrum 15 of the upper arm 3 is pressed and the lower arm 4 is pulled upward. As a result, the electrodes 6 and 7 at the tips of the arms 3 and 4 come close to each other to clamp the work 19 and are used for welding work. When the pressure rod 16 is retracted by the pressure cylinder 16 to release the contact with the rear end of the lever 14, the upper and lower arms 3 and 4 move in the opening direction by the spring 8 and the electrodes 6 and 6 are released. 7 moves away from work 19.

As described above, since the pressurizing cylinder 16 is not installed in the gun body, the structure of the gun body is compact and lightweight. Therefore, it is possible to perform welding work in a narrow space where the gun is large and welding work is difficult to perform conventionally. Moreover, it can be conveniently applied as a welding gun for robots due to its light weight. In addition, if a plurality of levers 14 having different lengths and shapes are prepared, the levers can be selectively used according to the environment of the welding location and the like, and optimal welding work can be performed.

[0013]

[Effect of device]

 Since the present invention has the above-described structure, since the pressurizing cylinder is not installed in the gun body, the structure of the gun body is compact and lightweight. Therefore, not only is it possible to perform welding work in a narrow place where the gun is large and welding work is difficult to perform in the past, but it is also possible to use it conveniently as a robot welding gun due to its light weight. It is an easy X-type welding gun.

Further, since the upper and lower arms are opened and closed by a simple lever and spring, the X-type welding gun has a simplified structure.

[Brief description of drawings]

FIG. 1 is a side view of an X-type welding gun according to the present invention.

FIG. 2 is a plan view of a main part of an X-type welding gun according to the present invention.

[Explanation of symbols]

 1 bracket 2 base 3 upper arm 4 lower arm 5 pivot 8 spring 12 support plate 14 lever 15 fulcrum 16 pressure cylinder 18 pressure rod

Claims (1)

[Scope of utility model registration request] 1. An X-type welding gun in which an upper and lower arms are pivoted at the tip of a bracket attached to a base, and a spring for urging the upper and lower arms in the opening direction is arranged in front of the pivot. A lever having the upper surface of the upper arm as a fulcrum at the tip of a supporting plate fixed to the lower arm in front of the spring
The X-type welding gun is characterized in that a pressure rod of a pressure cylinder installed separately from the gun body is brought into contact with the rear end of the lever.