JP3240430U - Weld surface - Google Patents

Abstract

An object of the present invention is to provide a welding surface on which welding can be performed safely, quickly, and with high precision when a welding operator performs welding, particularly at night and in a dark place. A welding face body (100) and a first position fixed to the welding face body to block the welder's field of view to protect the welder's eyes from the welding light, and a light-shielding glass. Welding light-shielding glass part 120 that can be held at a second position where the light-shielding glass part 120 can be visually observed without light shielding, and a portion after welding without the light-shielding glass in a state where the light-shielding glass part for welding work is held at the second position. is provided, and when the welded portion after welding is confirmed, the welding operation light-shielding glass portion is held at the second position and at the same time, the welded portion irradiation/confirmation light is turned on by the welding operator. Lights up automatically without performing the switch switching operation. [Selection drawing] Fig. 2

Description

TECHNICAL FIELD The present invention relates to a welding surface that helps a welding operator to perform welding operations safely, quickly and with high precision, especially at night and in the dark.

Welding surfaces used to protect the welder's face and eyes from strong light, sparks, and spatter emitted when the welder performs welding work have been known for some time (for example, Patent Document 1 and Patent Document 2).

Japanese Utility Model Laid-Open No. 61-45915 JP-A-5-344998

The welding surface described in Patent Document 1 and Patent Document 2 is used to protect the welder's face and eyes from the strong light, sparks, and spatter emitted when the welder performs welding work. play.

On the other hand, the actual time for welding work at the site is not limited to the bright hours of the day. Quite often, a welding operation must be completed for a given limited time. Specifically, the following are mentioned.

For example, in the repair of cracks in reinforcement ribs of girders for running monorails and railways during night hours when they are not running, in a dark work environment during a limited number of nights when monorails and railways are not in operation. Welding work must continue. Likewise, in the case of seismic reinforcement of a factory that is in operation during the daytime, welding work must be continued in a dark work environment during a limited period of time at night when the factory is not in operation.

In addition, for example, when welding the inner surface of a water pipe buried underground, the surroundings of the welding location are always dark with no light coming in regardless of day or night, so welding in such a work environment is difficult. work must be done.

On the other hand, during the actual welding work, it is necessary to proceed with the welding work while performing various confirmation work in order to improve the quality of the weld finish. Specifically, for example, in all welding forms such as arc welding, TIG welding, and semi-automatic arc welding, it is necessary to always check the appearance of the weld bead immediately after welding to confirm that the base metals are securely bonded to each other. Required. This is the same in the case of build-up welding in which weld beads are overlapped many times during welding, and it takes time and effort to check the welding state for each weld bead.

Also, each time an arc rod is used up during arc welding, a weld bead ends. defects are likely to occur. Since this is a defect inside the seam that is confirmed by a subsequent RT inspection (radiographic test), etc., all the seams must be secured during the welding operation so as not to cause such inherent defects in the seams of the weld bead. It is important to form it as a seam.

Therefore, in the process of welding work, it is required to smoothly shape the end portion of the weld bead with a grinder so that the next weld bead can be reliably spliced. However, in a welding work environment at night or in a dark place, it is difficult to reliably shape each end of the weld bead with a grinder so that each end of the weld bead becomes a smooth end as described above. It will be a very difficult task.

Therefore, in the welding work environment at night or in a dark place, every time the arc rod disappears and the edge that becomes the joint part of the weld bead is formed, the edge should be visually checked for a sufficient amount of time. The welding bead connection portion must be scraped with a grinder while confirming the weld bead connection portion in a clean state, which considerably increases the work load on the welding operator.

In addition, after the welding work, it is necessary to visually check the spatter adhering to the base material around the weld bead and remove it with a grinder to improve the appearance quality.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a welding surface that is useful for a welding operator to perform welding work safely, quickly and with high accuracy, especially at night and in a dark place.

In order to solve the above-mentioned problems, the welding surface according to claim 1 of the present invention includes:
Having a welding surface body and a welding surface body mounting part that covers the face with the welding surface body when the welding operator performs welding work,
The welding surface body includes a first welding surface body fixed to the welding surface body so as to shield the welding operator's field of view in order to protect the welding operator's eyes from the welding light when the welding operator performs welding. together with the position of the welder, in a state where at least a part of the light-shielding glass for the welder's field of view is fixed to the welding surface body during the confirmation work of the welding state after welding, by the welding operator's hand operation A light-shielding glass portion for welding work that can be held at a second position where the state after welding can be visually observed without passing through the light-shielding glass,
When confirming the state after welding, the welder can visually observe the welded portion without going through the light shielding glass while the light shielding glass for welding work is held at the second position. Welding part irradiation/confirmation light,
Equipped with a power supply unit for irradiation and confirmation light irradiation provided in the inner part facing the welder's face,
When the welding operator checks the welded part after welding, the light-shielding glass part for welding work is held at the second position, and at the same time, the welded part irradiation/confirmation light is automatically turned on without the welding operator's switching operation. It is characterized by that it came to light up.

ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide a welding surface that is useful for a welding operator to perform welding work safely, quickly, and with high accuracy, especially at night and in a dark place.

1 is a perspective view of a welding surface according to an embodiment of the present invention, showing a state in which the field of vision of a welding operator wearing the welding surface is covered with light-shielding glass; FIG. FIG. 2 is a view corresponding to FIG. 1 and showing a state in which the light-shielding glass is removed from the field of view of the welding operator wearing the welding surface; FIG. 3 is a perspective view showing the inner side of the weld surface shown in FIGS. 1 and 2; FIG. 4 is an electrical circuit diagram provided on the welding surface shown in FIGS. 1 to 3; FIG. FIG. 4 is an explanatory diagram showing a state in which a welding operation and a welding confirmation operation are performed with the welding surface according to one embodiment of the present invention attached. FIG. 6 is an explanatory view showing a welding operation of a welded portion at a position different from that in FIG. 5 corresponding to FIG. 5; FIG. 7 is an explanatory view showing the welding operation of a welded portion at a position different from that of FIGS. 5 and 6, corresponding to FIG. 5;

Hereinafter, the configuration of a welding surface 10 (hereinafter referred to as "welding surface 10") according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a welding surface according to one embodiment of the present invention, showing a state in which the field of view of a welding operator wearing the welding surface is covered with light-shielding glass. FIG. 2 is a view corresponding to FIG. 1, and shows a state in which the light-shielding glass is removed from the field of view of the welding operator wearing the welding surface.

The welding surface 10 has a welding surface body 100 and a welding surface body mounting portion for covering the face with the welding surface body 100 when a welding operator performs welding work. The welding surface main body 100 is provided with a light shielding glass portion 120 for welding work on the front side thereof.

Further, the welding work light-shielding glass portion 120 is fixed to the welding surface main body 100 so as to block the welder's field of view in order to protect the welder's eyes from the welding light when the welder performs welding. In addition to the first position PS1, the welding operator's hand with at least a part of the light-shielding glass for the welding operator's field of view fixed to the welding surface main body 100 during the welding state confirmation work after welding By operation, the state after welding can be held at a second position PS2 that allows visual observation without passing through the light-shielding glass.

The welding surface body 100 is also provided with a welding area irradiation/confirmation light 130 on its front side. When confirming the state after welding, the welded portion irradiation/confirmation light 130 illuminates the welded portion without passing through the light shielding glass while the light shielding glass portion 120 for welding work is held at the second position PS2. It plays the role of making it visible to the welding operator.

A power supply unit 140 for irradiation with a light for irradiation/confirmation is provided in the inner portion of the welding surface body 100 facing the face of the welding operator. With such a configuration, the welding surface according to the present invention holds the welding work light-shielding glass portion 120 at the second position PS2 when the welding operator checks the welded portion after welding.
The weld area irradiation/confirmation light 130 is automatically turned on without any switching operation by the welder.

A more specific configuration of the welding surface according to the present embodiment described above will be supplementarily described below. The weld surface body 100 is made of the same material as a generally used weld surface.

In addition, the welding surface body 100 is provided with a handle 190 on the lower side of its front surface, and rubber bands 111, 112 (110) extending from the upper side of both sides of the front surface to the back side of the welding surface. The rubber bands 111, 112 (110) are wrapped around the helmet while the welding operator is wearing the work helmet, so that the welding surface itself can be secured to the helmet even if the welding operator does not grip the hand rod 190. It is designed to remain fixed to the front.

Both ends of the rubber bands 111, 112 (110) extending from the left and right sides of the welding surface main body 100 are provided with Velcro (registered trademark) not shown here, and the Velcro (registered trademark) is attached. The elastic force of the rubber bands 111, 112 (110) is adjusted according to the conditions to firmly fix the welding surface body 100 to the front side surface of the helmet (see FIGS. 5 to 7). However, if the welding face body 100 can be firmly attached to the helmet only with a rubber band, Velcro (registered trademark) is not necessarily required in the present invention.

An opening is formed in an approximately central region of the front surface of the welding surface body 100 so that the welding operator can see the welded portion while the welding surface is in use. A front side substrate frame 102 made of thin metal is attached to maintain the attached state of the working light shielding glass portion 120 between the first position PS1 and the second position PS2. A transparent protective glass 103 is attached within the frame of the front substrate frame 102 .

In addition, a back side substrate frame 104 is also provided on the back side of the welding surface main body 100 so as to sandwich the periphery of the opening of the welding surface main body 100. , 103 are firmly fixed around the opening of the weld face body 100 .

One end of the light shielding glass portion 120 for welding operation is connected to a light shielding glass main body 121, a light shielding glass fixing frame 122, and a predetermined portion of the light shielding glass fixing frame 122, and the other end is connected to a predetermined position of the front substrate frame 102. It has two tension coil springs 123 connected to.

The elastic force of the two tension coil springs 123 maintains the attachment state of the light shielding glass portion 120 for welding work to the front substrate frame 102 between the first position PS1 and the second position PS2. It has become.

Then, during the welding work, by setting the light-shielding glass portion 120 for welding work to the first position PS1, it is superimposed on the front side of the front substrate frame 102, and the light-shielding glass is superimposed on the front surface of the transparent protective glass 103. , the welder performs the actual welding work. During or after the welding operation, the light shielding glass portion 120 for the welding operation is separated from the front substrate frame 102 so that the welding operator can check the state of the weld bead Wb and its vicinity after welding. The welding surface main body 100 is attached through a transparent protective glass 103 for confirmation.

In addition, the selection operation between the first position PS1 and the second position PS2 of the welding light-shielding glass portion 120 is performed by the welding operator using his or her own hand to move the light-shielding glass fixing frame of the welding light-shielding glass portion 120 to the position of the light-shielding glass fixing frame. The projecting portion 125 provided at one end of the lower side of the body 122 is pinched and moved, and the snap action by the elastic force of the pulling coil spring 123 is used to instantly perform the movement.

In this embodiment, the welding part irradiation/confirmation light 130 consists of a thin COB (Chip On Board) type LED light and is attached to a part of the upper side of the front board frame 102 . In addition, the welding part irradiation/confirmation light 130 is sandwiched between the light shielding glass part 120 for the welding work, that is, the upper side of the front substrate frame 102, and the light shielding glass part 120 for the welding work is put on the first position PS1, that is, on the upper side of the front substrate frame 102 to perform the welding work. It is not affected by sparks and spatter inside.

Needless to say, the welding portion irradiation/confirmation light 130 may use a certification means other than the COB type LED light as long as the effects of the present invention can be exhibited. Also, the attachment position of the welding portion irradiation/confirmation light 130 is not limited to the attachment position of the present embodiment, and can be attached to any other appropriate location as long as the effects of the present invention can be exhibited.

Then, the welding work light-shielding glass portion 120 is moved from the first position PS1 to the second position PS2 to move the entire light-shielding glass that covers the field of view of the welding operator upward from the field of view, and at the same time, A confirmation light 130 is turned on.

In the present embodiment, the lighting operation of the welding part irradiation/confirmation light 130 is performed when the welding operation light shielding glass part 120 reaches the second position PS2 from the first position PS1. By pushing the push switch 105 provided near the upper side of the front side board frame 102 of the surface, the welding work light-shielding glass part 120 continues to be lit while maintaining the state of the second position PS2, and the welding operator (weld bead Wb and its vicinity) can be reliably confirmed.

FIG. 3 is a perspective view showing the inside of the weld face body 100 shown in FIGS. 1 and 2. FIG. In the figure, the inside of the welding surface body 100, that is, the position where the welding operator can see the welding surface while the welding surface is in use, can be visually confirmed during the welding operation, and the state after the welding operation can also be visually confirmed after the welding operation. An oblong rectangular opening is shown.

Then, during the welding operation, the welding operator passes through the state in which the transparent protective glass 103 and the light shielding glass are overlapped at the first position PS1 where the welding operation light shielding glass portion 120 is superimposed on the front side substrate frame 102. Welding work is performed while protecting the eyes of the operator.

Further, after the welding operation, in order to check the quality of the welded portion (weld bead Wb and its vicinity), the light shielding glass portion 120 for welding operation is moved to the second position PS2, and transparent protection is performed without passing through the light shielding glass. The state after welding can be accurately confirmed only through the glass 103. - 特許庁

In the case of this embodiment, a power supply unit 140 is fixed to the upper side of the opening on the inner side of the welding surface, and is composed of a disk case having a certain thickness and a dry battery housed therein. A part of the power supply unit 140 is provided with a power switch 141 for turning on/off the supply of electricity from the power supply unit itself.

FIG. 4 is an electrical circuit diagram associated with the welding surfaces shown in FIGS. 1-3. With such a circuit configuration, the power switch 141 of the power supply unit 140 is turned off when it is not related to the welding work, and the power switch 141 of the power supply unit 140 is turned on during the welding work so that the push switch 105 described above is turned on. When pressed by the light shielding glass portion 120 for welding work, that is, when the welded part is visually confirmed after the welding work, until the welding work is restarted after the visual confirmation work of the welding state is finished, the welded part It is possible to light the irradiation/confirmation light 130 .

That is, in order to temporarily remove the light shielding glass from the field of view when confirming whether or not the welded portion is securely and neatly welded, the welding work light shielding glass portion 120 is manually moved from the first position PS1 to the second position. to position PS2. Simultaneously with this operation, the push switch 105 is pushed by the light shielding glass portion 120 for welding work, and this area is brightly illuminated so that the welding operator can confirm the welded portion at a glance. ing.

Hereinafter, the effects of the present invention will be described with reference to the drawings based on the above-described embodiment. FIG. 5 is an explanatory diagram showing a state in which a welding operation and a welding confirmation operation are performed with the welding surface according to one embodiment of the present invention attached. Also, FIG. 6 is an explanatory diagram showing the welding operation of a welded portion at a position different from that in FIG. 5, corresponding to FIG. Also, FIG. 7 is an explanatory view showing the welding operation of a welded portion at a position different from that in FIGS. 5 and 6, corresponding to FIG.

As explained in the problems to be solved above, the time for actual welding work at the site is not limited to the bright hours of the day, but rather the surroundings of the work area at night become extremely dark. There are quite a lot of cases where the welding work must be completed in a predetermined limited time in the environment, but according to the present invention, it is possible to quickly and reliably perform the welding work of good quality in such a working environment. At the same time, it is possible to reduce the physical burden on the welding operator and ensure safety in a dangerous working environment such as welding at a high place.

For example, in the repair of cracks in reinforcement ribs of girders for running monorails and railways during night hours when they are not running, in a dark work environment during a limited number of nights when monorails and railways are not in operation. In addition, welding work must be continued at high places, but by using the welding surface according to the present invention, high-quality welding work can be performed quickly and reliably, and the physical fatigue and burden of the welder can be reduced. Safety during work can be ensured.

Similarly, in the case of seismic reinforcement of a factory that is in operation during the daytime, welding work in a dark and high place work environment in the factory during a limited period of time during the night when the factory is not in operation. In addition to reducing the physical fatigue and burden of the welder, safety during the work can be ensured.

In addition, for example, when welding the inner surface of a water pipe buried in the ground, the welding work can be completed quickly and reliably, and the physical fatigue and burden of the welder can be reduced. safety inside can be ensured.

More specifically, quality welding operations can be performed in the exemplary welding environment described above. In other words, even at night or in a dark work environment where sunlight does not hit the ground, it is possible to proceed with the welding work while checking the workmanship by illuminating the welded part with a light immediately after welding. In all welding forms such as semi-automatic arc welding, it is essential to always check the appearance of the weld bead immediately after welding to confirm that the base metals are securely bonded. This is the same in the case of build-up welding in which weld beads are overlapped many times at the time of welding, and it is possible to instantly confirm whether or not the welded state is good for each weld bead.

In addition, if the arc rod disappears during arc welding and the spliced part that becomes the next weld bead at the end of the weld bead is not smoothed with a grinder, this internal However, during the welding process, remove the light-shielding glass as appropriate and directly observe the welded area while irradiating it with a light. can be prevented from occurring. In addition, it contributes to reducing the physical burden on the welder caused by the confirmation work associated with such welding at night or in a dark place.

In other words, every time the arc rod disappears and the end of the weld bead joint is formed, the end must be visually checked and ground with a grinder to create a clean weld bead joint. If not, it is possible to perform this process quickly and efficiently using the weld according to the present invention.

In addition, even when the appearance quality is adjusted by visually checking the spatter adhering to the base material around the weld bead after welding work and removing it with a grinder, the weld surface according to the present invention can be used quickly and efficiently. It is possible to perform this process at

Note that the above-described embodiment is merely an example for exhibiting the action and effect of the present invention. can be changed as appropriate. Specifically, for example, unlike the present embodiment, another illumination light may be provided instead of the LED light as long as it has the function of exhibiting this effect of the present invention.

In addition, if the position where the welding part irradiation/confirmation light is attached has the same function as that of the above-described embodiment, and if the effects of the present invention can be exhibited in the same way, the welding surface main body other than the above-described embodiment can be applied. You can install it anywhere. Similarly, the shape of the welding portion irradiation/confirmation light itself is not limited to the shape of the above embodiment.

In addition, regarding the power supply unit for irradiation/confirmation light irradiation, in this embodiment, a switch case made of resin with an on/off changeover switch containing three AAA batteries is used, but the effect of the present invention is exhibited. If it is a power supply other than this, for example, a power supply unit for irradiation/confirmation light irradiation equipped with a lithium ion secondary battery that can be repeatedly charged may be used. As the power source for light irradiation, the power source itself may be reduced in size and weight.

Further, a switch that can always keep the welding part irradiation/confirmation light off when the light shielding glass for welding work is at the second position, and always keep it on when it is at the first position, That is, if only one switch equivalent to the push switch of the above-described embodiment is provided in a part of the electric circuit, the switch provided in the irradiation/confirmation light irradiation power supply unit itself in the above-described embodiment can be omitted. can be

In addition, in the above-described embodiment, each drawing and written explanation based thereon are equipped with a hand-held rod and are tightly wrapped around the welder's helmet with a rubber band to protect the welder's face and ensure the welding work. The description has been based on the configuration of the weld surfaces that can be performed. However, unlike such a form, instead of the cardboard material that has undergone a special treatment that is excellent for welding work, leather is used for welding work in narrow spaces. It goes without saying that even if the present invention is applied, the same effect can be obtained.

REFERENCE SIGNS LIST 10 welding surface 100 welding surface main body 102 front substrate frame 103 protective glass 104 rear substrate frame 105 push switch 111, 112 (110) rubber band 120 light shielding glass portion for welding work 121 light shielding glass main body 122 light shielding glass fixing frame 123 tension coil Spring 125 Protrusion 130 Welding Part Irradiation/Confirmation Light 140 Power Supply 141 Power Switch 190 Hand Rod PS1 First Position PS2 Second Position Wb Weld Bead

Claims (1)

Having a welding surface body and a welding surface body mounting part that covers the face with the welding surface body when the welding operator performs welding work,
The welding surface body includes a first welding surface body fixed to the welding surface body so as to shield the welding operator's field of view in order to protect the welding operator's eyes from the welding light when the welding operator performs welding. together with the position of the welder, in a state where at least a part of the light-shielding glass for the welder's field of view is fixed to the welding surface body during the confirmation work of the welding state after welding, by the welding operator's hand operation A light-shielding glass portion for welding work that can be held at a second position where the state after welding can be visually observed without passing through the light-shielding glass,
When confirming the state after welding, the welder can visually observe the welded portion without going through the light shielding glass while the light shielding glass for welding work is held at the second position. Welding part irradiation/confirmation light,
Equipped with a power supply unit for irradiation and confirmation light irradiation provided in the inner part facing the welder's face,
When the welding operator checks the welded part after welding, the light-shielding glass part for welding work is held at the second position, and at the same time, the welded part irradiation/confirmation light is automatically turned on without the welding operator's switching operation. A welding surface characterized in that it is adapted to illuminate at

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