JP2005305546A - Light shielding protector with illuminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make welding possible by lighting the weld zone and its periphery with an illuminator like a halogen lamp and thereby viewing them as a see-through image on a liquid crystal display equipped with a camera function. <P>SOLUTION: This is a system in which an arc weld zone and its periphery are illuminated with an illuminator having a large visible light quantity like a halogen lamp provided on a light shielding protector, in which this reflected light is put through a shielding glass filter of a medium filter number and made visible on a liquid crystal display equipped with a camera function, and in which welding is concurrently performed while glaring arc beams are suppressed with a welding gas nozzle and the light shielding glass. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a visual check of the position of a welded part and its periphery during inert gas arc welding and mag welding.

  The conventional light-shielding protective device is a state where a certain degree of light-shielding glass shields the ultraviolet rays and intense rays of the arc light and welds by visually observing only the central portion of the arc light. It was almost impossible to see and the lighting equipment was not attached.

Problems to be solved by the invention

  The problem to be solved is that the welding start point and the peripheral position during welding cannot be visually confirmed.

  Secondly, there is prevention of eye fatigue due to strong light passing through the light-shielding glass, and prevention of damage to the eyeball due to ultraviolet rays and spattering.

Means for solving the problem

The present invention uses a slightly bright shading glass for the shading protection device, and prevents UV, infrared rays, radiant heat and intense visible light from the welded part by seeing through a liquid crystal display with a camera function inside. In addition, the main feature is that the periphery of the welded portion is illuminated with a lamp having a continuous spectrum and having a large amount of visible light without generating ultraviolet rays, such as a halogen lamp, and is displayed on a display.

  In addition, the gas nozzle of the torch is slightly stood up and handled so that the central part of the arc light that goes straight is a blind spot, and the arc light appears on the display and prevents the field of view from being difficult to see.

The invention's effect

  According to the image display method of the present invention, the conventional light-shielding protective device is provided with an illumination lamp, a light-shielding glass, and a camera function, so that it is less likely to look directly into the part being welded for positioning at the start of welding. This has the advantage of making the welding operation efficient and easy as well as reducing the load on the machine.

  Even when the arc welding part and its surroundings are viewed while illuminating with a halogen lamp etc., only a certain degree of shading glass is unfavorable to the eyes because it suffers from ultraviolet rays, infrared rays and radiant heat from the arc light. While seeing through the light-shielding glass and the LCD with camera function while illuminating, do not reflect the ultraviolet rays, infrared rays and radiant heat from the welded part, and visually observe the welded part and its surroundings with visible light without emitting it. Is possible.

  A lighting tool for displaying an image of the arc welding portion and its periphery by a liquid crystal display is performed by a halogen lamp or the like having a large visible light amount that does not emit ultraviolet rays.

  This shading protective device is effective in preventing eye damage caused by sputtering, peeling of the face due to ultraviolet rays, etc., and facilitates welding.

  It is assumed that a light shielding glass with a medium degree of light shielding number is used so that the reflected light illuminated by the illumination lamp passes as much as possible and the arc light is shielded as much as possible.

  Since the halogen lamp for illumination becomes high temperature, it is covered with a metal mesh at an appropriate position from the light source, and further, a small motor fan is attached to the upper part of the light shielding protector to forcibly cool the metal mesh for air cooling and heat dissipation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the figure, the shading protector main body 1 has the same material and structure as the conventional shading protector, but a multi-intensity halogen lamp 8 is provided on the upper front side of the main body to illuminate the welded portion and its periphery. Visual confirmation of the vicinity of the welded part was made.

  This reflected light passes through the light-shielding glass 4 and is projected on the liquid crystal display 2 with a camera function inside. However, during arc welding, when the arc light is directly incident on the display, a part of the display is strongly white. Since it only emits light, the arc light is suppressed by the shielding glass, and the welding angle of the gas nozzle of the torch is slightly raised to cover the arc light center.

It is a front view of a light-shielding protective device It is side surface sectional drawing of a light-shielding protective device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shading protective device body 2 Liquid crystal display body 3 Liquid crystal display camera 4 Shading glass 5 Protection plate glass 6 Handle 7 Window 8 Halogen lamp 9 Wire net 10 Motor fan

Claims (2)

  In arc welding, in order to confirm the position of the part being welded and its surroundings, UV light such as a halogen lamp is not generated, and the visible part has a continuous spectrum and is illuminated by a lighting tool with a large amount of visible light. For the purpose of visual observation, in order to suppress intense arc light and allow reflected light to pass through as much as possible, it is viewed through a camera function using a light-shielding glass, and this is reflected on the liquid crystal display while ultraviolet, infrared, radiant heat, and dazzling are used during welding. A luminaire and a transparent image display system with a light-shielding glass filter that suppresses light and prevents spatter.   A method of forcibly air-cooling a small motor fan attached to the top of a light-shielding protective device to prevent breakage of the lighting lamp used to display the periphery of the welded liquid crystal display and overheating of the protection wire mesh for preventing burns.

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