JPH0726075U - Grip switch for spot welding gun - Google Patents

Abstract

(57) [Summary] [Purpose] The two-step stroke switching of the gun cylinder of a portable spot welding gun can be easily performed at hand. [Structure] In a grip switch 1 of a portable spot welding gun, a manual switching valve 6 provided on the head side of a handle portion 2 of the grip switch for switching a stroke of a gun cylinder, and a switch button S of the switching valve are opened and closed. The valve operating lever 7 is provided and the lever is arranged above or near the head of the handle portion.
As a result, the switching valve can be easily opened and closed by simply pressing the lever with the thumb holding the handle, and the two-step stroke of the gun cylinder can be switched with one touch, improving the efficiency of welding work. Dramatically improve safety.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grip switch for a portable spot welding gun.

[0002]

[Prior art]

 Since the portable spot welding gun welds the spot position while the operator holds it in his hand and moves as desired, it is desirable that the grip switch has good operability so that the welding can be performed accurately. Conventional gripping switches for portable spot welding guns are known to have various switch groups such as a welding condition switching switch and a safety switch, as well as a two-stroke manual switching valve for the gun cylinder.

[0003]

[Problems to be solved by the device]

 However, with this type of conventional grip switch, when the operator grips the handle of the switch and the various switches are separated, it is not easy to operate with the gripper's hand. That is, it is difficult to directly operate the switch button of the manual switching valve that is separated by the hand holding the grip switch, and if you try to operate it with one touch, you cannot firmly grasp the handle part of the grip switch. However, if the welding sways or the position of the hitting point shifts, and if the welding work is repeated in such an unstable state, problems related to work accidents will arise and must be avoided. Therefore, in order to solve these problems, it was still necessary to improve the operability and safety of the grip switch.

The object of the present invention is to make it possible to change the two-step stroke of a portable spot welding gun with one touch, making it easy to hit the gun spot accurately and improving the efficiency and safety of welding work. It was done like this.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a stroke switch of a gun cylinder, which is provided on the head side of the handle portion of the grip switch of the grip switch of the spot welding gun. It has a manual switching valve for switching the switch and a valve operating lever for opening and closing the switch of the manual switching valve, and the operating lever is arranged above or near the head side of the handle portion. Means have been taken.

[0006]

[Work]

 Further, in the present invention, when the grip switch is gripped, the operator can easily push the operating lever of the manual switching valve with the thumb of the grip, so that one-handed operation can be performed while firmly gripping the manual switching valve. Switching can be done with one touch. Therefore, a grip switch with excellent operability and safety is realized.

[0007]

【Example】

 1 to 3 are views showing an embodiment of the present invention.

In the figure, reference numeral 1 indicates a grip switch of a portable spot welding gun (not shown). Reference numeral 2 indicates a handle portion of the switch. Reference numeral 3 denotes a push button of the welding start switch arranged on the lower side of the handle portion. Reference numeral 4 is a micro switch built in the handle portion 2 as a welding start switch.

Reference numeral 5 denotes a safety switch installed on the side of the head of the handle 2. This is a safety wave switch that turns the welding start switch on and off, and is located between two protruding guard plates 13 on the side surface. Reference numeral 6 is a manual switching valve having a switch button S on the upper side. This manual switching valve switches between a large opening stroke and a small welding stroke in a two-stage stroke gun cylinder.

Reference numeral 7 is a valve operating lever. The operating lever is supported on the manual switching valve so as to be pivotable in the vertical direction about the hinge P, and the lever panel 8 extending above the head of the handle portion is always provided with the switch button S of the manual switching valve 6. It is pushed up by the spring force that pushes up the operating lever 7.

Reference numeral 9 is a cord connected to the connector of the terminal box attached to the transformer (not shown) side. 10 is a safety cover for protecting the grip of the handle. 11 and 12 are gun mounting portions provided on the head side and the rear side of the grip switch, and either one of the mounting portions can be mounted on the gun side (not shown) depending on the usage.

In the grip switch 1 having such a configuration, the gun mounting portion 11 or the gun mounting portion 12 is bolted to the gun side by adjusting the serration at an arbitrary angle that is easy to operate.

The operation of the grip switch 1 will be described. Turn on the safety switch 5 and press the valve operating lever 7 of the manual switching valve 6 with the thumb of the hand holding the handle portion 2. The switch button S of the manual switching valve 6 is turned on (turned on) and the gun cylinder is opened. It operates and opens the electrode stroke greatly.

With this opening stroke, the electrode can easily clear the obstacle such as the work, and the gun can be moved to the target hitting position. When the valve operating lever 7 is released after moving the gun to the specified position, the switch button S of the manual switching valve 6 is raised (turned off) and the electrode stroke of the gun cylinder is changed from the large opening stroke to the small welding stroke. Replace

When the electrode is aimed at the welding point position by the short welding stroke that has been switched and the push button 3 of the welding start switch 4 is pressed, the electrode pressurizes the welding point position and starts energization for a certain time to join. . In this way, continuous welding is performed by accelerating the tapping tact with a short welding stroke operation during welding. Similarly, switching between large and small two-step strokes of opening and welding can be easily performed by one-touch operation of the valve operating lever.

[0016]

[Effect of device]

 As described above, according to the present invention, in the grip switch of the portable spot welding gun having the manual switching valve of the large and small two-stroke stroke of the gun cylinder, the thumb of the operator who holds the handle of the operating lever for operating the valve. Within the reach of, that is, the operation lever is extended to the hand, so compared to the conventional grip switch, it can be switched with one touch by the thumb holding the handle. Therefore, even if the grip switch is equipped with various switches such as a welding condition switch and a safety switch, the handle can be firmly gripped, and the problem of work accidents due to misalignment of the dot and fatigue of operation can be eliminated.

On the other hand, since the gun mounting portions of the grip switch are provided on both sides of the handle portion, the grip switch can be mounted in any direction so that the grip switch can be easily operated, and the grip switch is excellent in operability and safety. To realize.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the device of the present invention.

FIG. 2 is a side view of the device of the present invention.

FIG. 3 is a view on arrow AA of FIG.

[Explanation of symbols]

 1 Grip switch 2 Handle part 3 Welding start switch push button 4 Micro switch 5 Safety switch 6 Manual switching valve 7 Valve operating lever 8 Bench 9 Code 10 Safety cover 11, 12 Gun mount 13 Guard plate P Hinge S Switch button

Claims (2)

[Scope of utility model registration request] 1. A grip switch for a spot welding gun, which is provided on a head side of a handle portion of the grip switch,
It has a manual switching valve for switching the stroke of the gun cylinder and a valve operating lever for opening and closing the switch of the manual switching valve, and the operating lever is arranged above or near the head side of the handle portion. Grip switch for spot welding guns. 2. The grip switch according to claim 1, wherein the gun mounting portion of the grip switch is provided on the head side and the rear side of the handle section.