JPH079575U - Electrode cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] To remove the deposits such as oxides attached to the tip of the electrode, which causes the consumption of the electrode, at an early stage. [Structure] A small electric motor and a speed reducer are installed in the main body, and a rotating body is provided with a polishing paper that rotates in a direction perpendicular to the direction of rotation of the electric motor at the tip of the rotating body. The paper is pressed against the electrode with a predetermined pressure to remove oxides and the like adhering to the electrode to clean the electrode.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for cleaning electrodes in spot welding in which metal steel plates are superposed and welded.

[0002]

[Prior art]

 The conventional electrode management in spot welding is to use an air motor type or electric type electrode polishing / shaping device that can perform in-line shaping and polishing in addition to the centralized polishing method in which already shaped electrodes are regularly replaced if used for a certain period. The main practice is individual polishing with a manual tip dressing tool.

[0003]

[Problems to be solved by the device]

 With the conventional concentrated electrode polishing method, uniform shaping is possible and welding defects do not occur easily, and the welding quality is guaranteed, but in-line cannot be performed and extra man-hours are required. The higher the cost, the higher the replacement cost. Further, since the air-type or electric-type electrode polishing device and the manual tip dresser mainly perform shaping and polishing, a special tool suitable for the electrode is required and it takes time to perform shaping.

The present invention has been made in order to solve such a problem. The conventional method mainly used for electrode shaping and polishing is used to manage the electrodes to remove oxides and other deposits from the electrodes at an early stage. The purpose is to make it a cleaning method, and to be suitable for it, it is small and lightweight, can be easily operated inline, has a short removal time, has a low equipment cost, and can manage electrodes.

[0005]

[Means for Solving the Problems]

 The electrode cleaner device according to the present invention is not intended to shape the deformation and wear of the electrode tip, but is intended to remove the adhesion of oxides and the like that induces electrode wear at an early stage, and can be easily operated. The aim is to extend the life of the electrode by shortening the removal time and shortening the removal interval within the conventional shaping time.

In the device according to the present invention, a small electric motor and a speed reducer 3 having the same diameter as that of the electric motor 2 are mounted in a body body 9 that can be held by a hand, and a cleaner housing portion 10 at the tip end thereof is A conversion device 4 for converting the rotation direction to a direction perpendicular to the rotation axis of the electric motor or a speed reducer and a rotating disk 5 are provided, and the polishing paper 6 attached to the rotating disk 5 is pressed against the electrode with a predetermined pressure to adhere the electrode. The device is characterized in that the electrode is removed and the electrode is cleaned.

[0007]

[Action]

 In the electrode cleaner device of this invention, the purpose is to remove the deposits on the electrode surface.The rotating force, which has a large ability, causes the electrode to be deformed and polished or excessively removed depending on the pressing force against the electrode, and rather welds. Poor quality. In order to prevent this, it has a rotating force with a proper ability to remove only the deposits on the electrode surface, and when the pressing force of the electrode is increased, the rotation stops and deformation polishing is suppressed.

[0008]

【Example】

 FIG. 1 is a block diagram showing the configuration of the device according to the present invention. The basic structure of this consideration is described below. A small DC electric motor 2 driven by a rechargeable storage battery 1 and a speed reducer 3 (planetary gear 3a, spur gear 3b) directly connected to the shaft of the electric motor convert appropriate rotational force and rotational speed. These parts are contained in a cylindrical body (housing) 9 having a shape and size that can be easily gripped with one hand and operated.

A rotation converter 4 (bevel gear 4a, worm gear 4b) for converting the rotation direction into a direction perpendicular to the motor shaft and a rotary disk directly connected to the shaft are provided in the cleaner housing portion 10 at the tip of the reduction gear 3. It is composed of 5. The rotary disk 5 has a groove in consideration of the shape of the tip of the electrode, and the abrasive paper 6 for removing electrode deposits is attached on the groove for easy replacement. When the switch 7 is turned on and the electrode rotating disk 5 is applied to the electrode portion having the adhered substance by an appropriate pressing force, the adhered substance is removed and the electrode surface is cleaned.

When the electrode cleaner device is not used, the battery 1 is charged by connecting the charger to the charging jack 8. If the switch 7 is accidentally turned on, it will not rotate. 2, 3 and 4 are other examples of the embodiment, in which the type of the speed reducer 3 and the type of the rotation direction changing device 4 are changed and can be used according to the application.

[0011]

[Effect of device]

 As described above, the electrode cleaner of the present invention is a device for easily removing electrode deposits and cleaning the electrode surface in resistance spot welding, and extends the life of the electrode by cleaning and controlling the electrode early. It is also an electrode cleaner used to improve welding quality.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of the present invention.

2 is another embodiment of the electrode cleaner of FIG. 1, in which the reduction gear uses a planetary gear 3a and the rotation converter uses a bevel gear 4a. 2 to 5, the battery unit 1, the switch 7, and the charging jack unit 8 are omitted because they are the same as those in FIG.

3 is an application example of another embodiment of the electrode cleaner of FIG. 1 in which the type of the speed reducer of FIG. 2 is different, and is an example using a spur gear 3b.

FIG. 4 is another example of FIG. 1 in which a worm gear 4b is used to change the rotation direction and to change the converter and the reduction ratio.

5 is another example of the apparatus of FIG. 1 in which rotating disks 5 are arranged vertically and the upper and lower electrodes are simultaneously cleaned.

[Explanation of symbols]

 1 Storage Battery 2 Small Electric Motor 3 Reduction Gear 3a Planetary Gear 3b Spur Gear 4 Rotation Converter 4a Bevel Gear 4b Worm Gear 5 Rotating Disk 6 Polishing Paper 7 Switch 8 Charging Jack 9 Body Body (Case) 10 Cleaner Housing

Claims (1)

[Scope of utility model registration request] 1. A metal steel plate is stacked and sandwiched between a pair of electrodes,
A small electric motor driven by a rechargeable battery and a speed reducer having the same diameter as the small electric motor are provided in the spot welding electrode cleaning operation in which welding pressure is applied by applying a pressure between the electrodes. An electrode cleaner device characterized by comprising a transmission device or a speed reducer for converting a rotation direction into a direction perpendicular to a motor shaft and a rotation device having a cleaning function at its tip.