Welding surface

Abstract

To provide a welding surface on which welding is safely and quickly performed with high accuracy when a welding worker performs welding work especially at night and in a dark place.SOLUTION: The welding machine includes a welding surface body 100, a light shielding glass part 120 for welding work which is held at a first position fixed to the welding surface body so as to shield the field of view of a welding worker to protect the eyes of the welding worker from welding light and at a second position where the welding work can be visually confirmed without interposing the light shielding glass, and a welding part irradiation / confirmation light 130 which enables visual confirmation of a welded part without interposing the light shielding glass while holding the light shielding glass part for welding work at the second position. When the welded part after welding is confirmed, the light shielding glass part for welding work is held at the second position, and at the same time, the welding part irradiation / confirmation light is automatically turned on without performing the switching operation of a welding worker.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a welding surface that is useful for welding operators to perform welding safely, quickly and with high precision, particularly at night or in dark places. [Background technology]

[0002] Welding masks used by welding workers to protect their faces and eyes from strong light, sparks, and spatters emitted when they perform welding have been known for some time (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 61-45915 [Patent Document 2] Japanese Patent Application Publication No. 5-344998 Summary of the Invention [Problem to be solved by the invention]

[0004] The welding masks described in Patent Documents 1 and 2 serve to protect the face and eyes of welding workers from the strong light, sparks, and spatters emitted when welding.

[0005] On the other hand, the time for welding work at actual work sites is not limited to daytime light hours, but rather there are many cases where welding work must be completed in a limited time in an extremely dark environment around the work area at night or in a small, dark area even during the day.Specific examples include the following:

[0006] For example, when repairing cracks in the reinforcing ribs of girders for monorails or railways that run during the nighttime when the trains are not running, welding work must be continued in a dark environment during a limited, predetermined time during the night when the monorails or railways are not in operation.Similarly, when carrying out earthquake-resistance reinforcement of a factory that operates during the day, welding work must be continued in a dark environment during a limited, predetermined time during the night when the factory is not in operation.

[0007] Furthermore, for example, when welding the inside of a water pipe buried underground, the area around the welding site is always dark and lacks light, regardless of whether it is day or night, so the welding work must be carried out in such a working environment.

[0008] On the other hand, during actual welding work, various inspection procedures must be performed to improve the quality of the welded finish. Specifically, in all welding methods, such as arc welding, TIG welding, and semi-automatic arc welding, it is essential to always check the appearance of the weld bead immediately after welding to ensure that the base materials are securely bonded. This is also true in buildup welding, in which multiple weld beads are layered during welding, which requires the time and effort of checking the weld condition for each weld bead.

[0009] Furthermore, when arc welding is performed, an end of the weld bead is created each time the arc rod is used up, and if a new arc rod is used to connect the start of the next weld bead to this end, defects such as poor penetration are likely to occur at this weld joint. Because these are defects within the joint that can be confirmed by subsequent RT (Radiographic Test) inspections, it is important to form all joints as reliable joints during welding work to prevent such inherent defects from occurring in the joints of the weld bead.

[0010] Therefore, during the welding process, it is necessary to use a grinder to smoothly shape the end of the weld bead so that the next weld bead can be joined reliably. However, in a welding work environment such as at night or in a dark place, reliably shaping each end of the weld bead with a grinder to create the smooth end described above is extremely difficult if there is insufficient light during grinding work.

[0011] Therefore, when welding at night or in a dark place, each time the arc rod is removed and an end portion that will become the connecting portion of the weld bead is formed, the welding worker must take sufficient time to carefully visually inspect the end portion and grind it down with a grinder to ensure a clean weld bead connection, which significantly increases the workload of the welding worker.

[0012] In addition, after the welding work, it is necessary to visually check for spatter adhering to the base metal around the weld bead and remove it with a grinder to improve the appearance quality.

[0013] An object of the present invention is to provide a welding mask that helps a welding operator to perform welding safely, quickly, and with high precision, especially when performing welding work at night or in dark places. [Means for solving the problem]

[0014] In order to solve the above-mentioned problems, the welding surface according to claim 1 of the present invention comprises: The welding mask has a welding mask body and a welding mask body attachment part that covers the face of the welding worker when the welding worker performs welding work. The welding mask body is provided with a light-shielding glass portion for welding that can be held in a first position fixed to the welding mask body so as to shield the welding mask body from light when the welding mask body is being welded, and in a second position where the welding mask body can be operated by the welding mask body to manually check the welding condition after welding without using the light-shielding glass to shield the welding mask body from light when the welding mask body is being welded, with at least a portion of the light-shielding glass in the welding mask body being fixed to the welding mask body. a welding portion illumination and confirmation light that allows a welding operator to visually check the welded portion without using the light-shielding glass when checking the state after welding while the light-shielding glass portion for welding is held at the second position; It is equipped with a power supply unit for irradiating and checking lights located on the inside facing the welding operator's face, When a welder checks the welded area after welding, he or she holds the welding work shading glass in the second position and the welding area illumination and confirmation light automatically turns on without the welder having to switch it on or off. [Effects of the Invention]

[0015] According to the present invention, a welding mask can be provided that is useful for welding operators to perform welding safely, quickly, and with high precision, particularly at night or in dark places. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view of a welding mask according to an embodiment of the present invention, showing a state in which a welding operator wearing the welding mask has his or her field of vision obscured by a light-shielding glass. [Figure 2] FIG. 2 corresponds to FIG. 1 and shows the welding mask with the shading glass removed from the field of view of the welding operator wearing the mask. [Figure 3] FIG. 3 is a perspective view showing the inside of the welding surface shown in FIGS. 1 and 2. [Figure 4] FIG. 4 is an electrical circuit diagram of the welding surface shown in FIGS. 1 to 3. [Figure 5] 1 is an explanatory diagram showing a state in which a welding operation and a welding confirmation operation are performed with a welding mask according to an embodiment of the present invention attached; FIG. [Figure 6] 6 is an explanatory view corresponding to FIG. 5 and illustrating the welding operation of a welding portion at a position different from that in FIG. 5. [Figure 7] 5 and 6. FIG. 7 is an explanatory view corresponding to FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] The configuration of a welding mask 10 (hereinafter referred to as "welding mask 10") according to one embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a welding mask according to one embodiment of the present invention, showing a state in which a welder wearing the welding mask has a light-shielding glass covering his field of vision. FIG. 2 is a view corresponding to FIG. 1, showing a state in which the light-shielding glass has been removed from the welder wearing the welding mask.

[0018] The welding mask 10 has a welding mask body 100 and a welding mask body attachment part that covers the face of a welder when performing welding work with the welding mask body 100. The welding mask body 100 is equipped with a light-shielding glass part 120 for welding work on its front side.

[0019] In addition, the welding work shading glass portion 120 can be held at a first position PS1, where it is fixed to the welding mask body 100 so as to shade the welding worker's field of vision to protect the welding worker's eyes from the welding light when welding, and at a second position PS2, where at least a portion of the shading glass is fixed to the welding mask body 100 to shade the welding worker's field of vision when checking the welding condition after welding, allowing the welding worker to visually check the welding condition after welding by operating the welding mask body with his or her hand without passing through the shading glass.

[0020] The welding mask body 100 is also provided on its front side with a welding area illumination / confirmation light 130. The welding area illumination / confirmation light 130 serves to enable the welding operator to visually check the welded area without looking through the light-shielding glass when the welding work light-shielding glass portion 120 is held in the second position PS2 and the welding condition is confirmed.

[0021] Furthermore, the inner portion of the welding mask body 100 that faces the face of the welder is provided with a power supply unit 140 for irradiating the illumination and confirmation light. With this configuration, the welding mask according to the present invention can hold the welding light-shielding glass portion 120 in the second position PS2 when the welder checks the welded joint after welding, and at the same time, The welding area illumination and confirmation light 130 is designed to automatically light up without the welding operator having to perform a switch changeover operation.

[0022] The following provides a supplementary explanation of the specific configuration of the welding mask according to the present embodiment described above. The welding mask body 100 is made of the same material as that of commonly used welding masks.

[0023] The welding mask body 100 is also provided with a handle 190 on the lower front side, and rubber bands 111, 112 (110) that extend from the upper sides of the front side to the back side of the welding mask. The rubber bands 111, 112 (110) are wrapped around the periphery of a work helmet when the welder is wearing it, so that the welding mask itself is kept fixed to the front of the helmet even if the welder does not grasp the handle 190.

[0024] Both ends of the rubber bands 111, 112 (110) extending from the left and right sides of the welding mask body 100 are equipped with Velcro (registered trademark) not shown here, and the elastic force of the rubber bands 111, 112 (110) can be adjusted by adjusting how the Velcro (registered trademark) is attached, thereby firmly fixing the welding mask body 100 to the front side of the helmet (see Figures 5 to 7). However, if the welding mask body 100 can be firmly attached to the helmet using only the rubber bands, Velcro (registered trademark) is not necessarily required in the present invention.

[0025] An opening is formed in the approximate center region of the front surface of welding mask body 100, allowing the welder to visually observe the welded area while using the welding mask, and a thin metal front substrate frame 102 is attached around this opening and to the outside of the welding mask to maintain the welding operation light-shielding glass part 120 attached between first position PS1 and second position PS2. Transparent protective glass 103 is attached within the frame of front substrate frame 102.

[0026] In addition, a rear substrate frame 104 is provided on the rear side of the welding mask body 100 so as to sandwich the periphery of the opening of the welding mask body 100, and the front substrate frame 102 and the rear substrate frame 104 are engaged with each other so that these substrate frames 102, 103 are firmly fixed around the periphery of the opening of the welding mask body 100.

[0027] The welding work shading glass part 120 comprises a shading glass main body 121, a shading glass fixing frame body 122, and two tension coil springs 123, one end of which is connected to a predetermined part of the shading glass fixing frame body 122 and the other end of which is connected to a predetermined position on the front substrate frame 102.

[0028] The elastic force of the two tension coil springs 123 maintains the welding operation light-shielding glass portion 120 attached to the front substrate frame 102 between the first position PS1 and the second position PS2.

[0029] During welding, the welding operator performs the actual welding by placing the welding light-shielding glass portion 120 in the first position PS1, overlapping it with the front side of the front substrate frame 102, and overlapping the light-shielding glass in front of the transparent protective glass 103. During welding or when checking the welding, the welding light-shielding glass portion 120 is moved away from the front substrate frame 102, allowing the welding operator to check the condition of the weld bead Wb and its vicinity after welding through the transparent protective glass 103 while still wearing the welding mask body 100.

[0030] In addition, the welding work shading glass part 120 can be instantly selected between the first position PS1 and the second position PS2 by the welding worker using his own hand to pinch and move the protrusion 125 provided on one end of the shading glass fixing frame 122 of the welding work shading glass part 120, and then using the snap action caused by the elastic force of the tension coil spring 123.

[0031] In this embodiment, the welding area illumination / confirmation light 130 is a thin COB (Chip On Board) type LED light, and is attached to a portion of the upper side of the front substrate frame 102. Furthermore, when the welding operation light-shielding glass part 120 is in the first position PS1, that is, when it is overlapped on the upper side of the front substrate frame 102, the welding area illumination / confirmation light 130 is sandwiched between them to avoid being affected by sparks and spatter during the welding operation.

[0032] It goes without saying that, as long as the effects of the present invention can be achieved, illumination means other than a COB-type LED light may be used for the welding area illumination / confirmation light 130. Furthermore, the installation position of the welding area illumination / confirmation light 130 is not limited to the installation position in this embodiment, and other suitable locations may be used as long as the effects of the present invention can be achieved.

[0033] Then, the welding work shading glass part 120 is moved from the first position PS1 to the second position PS2, and the entire shading glass obscuring the welding worker's field of vision is moved upward from the field of vision, and at the same time, the welding part illumination / confirmation light 130 is turned on.

[0034] In this embodiment, when the welding work shading glass part 120 reaches the second position PS2 from the first position PS1, a part of it presses the push switch 105 located near the upper side of the front substrate frame 102 of the welding surface, and the welding area illumination / confirmation light 130 stays lit as long as the welding work shading glass part 120 remains in the second position PS2, helping the welding worker to reliably check the welding area (weld bead Wb and its surrounding area).

[0035] Figure 3 is a perspective view showing the inside of the welding mask body 100 shown in Figures 1 and 2. In this figure, a horizontally long rectangular opening is shown inside the welding mask body 100, i.e., at a position within the field of view of the welder while using the welding mask, to allow visual confirmation during welding work and to visually check the condition after welding work has been completed.

[0036] During welding, the welding worker's eyes are protected by the overlapping transparent protective glass 103 and the light-shielding glass at the first position PS1 where the welding light-shielding glass part 120 is overlapped on the front substrate frame 102.

[0037] Furthermore, after the welding work, when checking the quality of the welded portion (weld bead Wb and its surrounding area), the welding work shading glass portion 120 is moved to the second position PS2, so that the condition after welding can be accurately checked only through the transparent protective glass 103, without using the shading glass.

[0038] In this embodiment, a power supply unit 140 is fixed above the opening inside the welding surface, and is made up of a disk case with a certain thickness and a dry cell battery housed in it. A part of the power supply unit 140 is provided with a power switch 141 that turns on and off the supply of electricity from the power supply unit itself.

[0039] Figure 4 is an electrical circuit diagram provided in the welding surface shown in Figures 1 to 3. This circuit configuration makes it possible to turn off the power switch 141 of the power supply unit 140 when there is no welding work involved, and to turn on the power switch 141 of the power supply unit 140 during welding work, and to turn on the welded part illumination / confirmation light 130 when the above-mentioned push switch 105 is pressed by the welding work light-shielding glass unit 120, that is, from the time when the welded part is to be visually checked after welding work is completed until the welding work is resumed after the visual check of the welded state is completed.

[0040] That is, when checking whether the welded portion has been welded securely and neatly, the welding work light-shielding glass portion 120 is manually moved from the first position PS1 to the second position PS2 to temporarily remove the light-shielding glass from view. At the same time as this action, the welding work light-shielding glass portion 120 presses the push switch 105, illuminating the area brightly and emitting light with sufficient illuminance so that the welding worker can check the welded portion at a glance.

[0041] The effects of the present invention will be described below based on the above-described embodiment with reference to the drawings. Fig. 5 is an explanatory diagram showing a state in which welding and welding confirmation work are being performed while wearing a welding mask according to one embodiment of the present invention. Fig. 6 is an explanatory diagram corresponding to Fig. 5 showing welding of a welding part in a position different from that shown in Fig. 5. Fig. 7 is an explanatory diagram corresponding to Fig. 5 showing welding of a welding part in a position different from that shown in Figs. 5 and 6.

[0042] As explained in the problem to be solved above, the time when welding work is performed on-site is not limited to daylight hours, and there are many cases where welding work must be completed within a specified limited time in an extremely dark environment around the work area at night. However, according to the present invention, high-quality welding work can be performed quickly and reliably in such a work environment, and at the same time, the physical burden on the welding worker associated with the work can be reduced, thereby ensuring safety in dangerous work environments such as welding work at high altitudes.

[0043] For example, when repairing cracks in the reinforcing ribs of girders for monorails or railways that run at night when the trains are not running, welding work must be carried out in a dark work environment and at high altitudes during a limited, specified time at night when the monorail or railway is not in operation.However, by using the welding mask of the present invention, high-quality welding work can be carried out quickly and reliably, and the physical fatigue and strain on the welding worker can be reduced, ensuring safety during the work.

[0044] Similarly, when carrying out earthquake-resistance reinforcement of a factory that operates during the day, welding work can be carried out quickly and reliably in the same way as described above during the limited, specified hours at night when the factory is not operating, in a dark working environment, especially at high altitudes within the factory, and the physical fatigue and burden on the welding workers can be reduced, ensuring safety during work.

[0045] Furthermore, when welding the inside surface of a water pipe buried underground, for example, the welding work can be completed quickly and reliably, and the physical fatigue and burden on the welding worker can be reduced, ensuring safety during the work.

[0046] More specifically, high-quality welding can be performed in the above-described exemplary welding work environment. In other words, even at night or in a dark work environment underground where sunlight does not reach, the welding work can be performed while checking the quality of the work by shining a light on the welded area immediately after welding. In all welding methods, such as arc welding, TIG welding, and semi-automatic arc welding, it is essential to always check the appearance of the weld bead immediately after welding to ensure that the base materials are securely joined. This also applies to build-up welding, in which multiple weld beads are layered during welding, and it is possible to instantly check whether the weld condition is good for each weld bead.

[0047] Furthermore, if the arc rod is removed during arc welding and the joint at the end of the weld bead where the next weld bead will be is not smoothed with a grinder, a defective weld will occur inside the weld bead when the next arc welding is performed to join the weld bead. However, this can be prevented by removing the shading glass as needed during welding work and shining a light on the weld to directly check the welded part and perform reliable welding while constantly checking the quality of the weld. This also contributes to reducing the physical strain on the welder caused by checking the work involved in welding at night or in dark places.

[0048] In other words, even when an end portion that will become the connecting portion of the weld bead is formed each time the arc rod is removed and the end portion must be visually inspected and ground down with a grinder to create a clean weld bead connection, the use of the welding portion of the present invention makes it possible to carry out this process quickly and efficiently.

[0049] Furthermore, even when spatter adhering to the base material around the weld bead after welding is visually inspected and removed with a grinder to improve the appearance quality, the use of the welding surface according to the present invention makes it possible to carry out this process quickly and efficiently.

[0050] The above-described embodiment is merely an example for achieving the effects of the present invention, and the material, shape, size, thickness, etc. of each component of the present invention can be appropriately modified in design as long as the same effects can be achieved. Specifically, for example, unlike this embodiment, another illumination light may be provided instead of the LED light as long as it has the function of achieving the effects of the present invention.

[0051] Furthermore, the welding area illumination / confirmation light may be attached to any suitable location on the welding mask body other than that of the above-described embodiment, as long as it has the same function as the above-described embodiment and can exert the same effects of the present invention. Similarly, the shape of the welding area illumination / confirmation light itself is not limited to the shape of the above-described embodiment.

[0052] Furthermore, in this embodiment, the power supply unit for irradiating the illumination and confirmation light uses a switch case made of resin with an on / off switch that has three built-in AAA batteries, but other power sources may be used as long as they can achieve the effects of the present invention, for example, a power supply unit for irradiating the illumination and confirmation light that has a rechargeable lithium ion secondary battery, and other than that, the power supply unit for irradiating the illumination and confirmation light may also be used that has, for example, a button battery, thereby making the power supply unit itself smaller and lighter.

[0053] Furthermore, if there is provided in only one part of the electrical circuit a switch that can keep the welding area illumination / confirmation light always off when the welding work shading glass section is in the second position and always on when it is in the first position, i.e., a switch equivalent to the push switch in the above-mentioned embodiment, the switch provided in the illumination / confirmation light power supply section itself in the above-mentioned embodiment may be omitted.

[0054] Furthermore, in the above-described embodiment, the drawings and the accompanying written description have been described based on a welding mask that includes a hand-held rod and is tightly wrapped around the welder's helmet with a rubber band, allowing the welder to perform welding reliably while protecting his or her face. However, it goes without saying that the present invention can be applied to a leather welding mask, known as a "gin mask," which is made of leather and is particularly suitable for welding in tight spaces, instead of a cardboard material that has been specially treated for excellent welding work, and still achieve the same effects. [Explanation of symbols]

[0055] 10 Welding Mask 100 Welding mask body 102 Front board frame 103 Protective Glass 104 Back side board frame 105 Push Switch 111,112(110) Rubber band 120 Welding work shading glass 121 Blackout glass body 122 Light-shielding glass fixing frame 123 Tension coil spring 125 Protrusion 130 Welding part illumination and confirmation light 140 Power supply section 141 Power switch 190 Handheld Stick PS1 1st position PS2 2nd position Wb Weld bead

Claims

[Claim 1] The welding mask has a welding mask body and a welding mask body attachment part that covers the face of the welding worker when the welding worker performs welding work. The welding mask body is provided with a light-shielding glass portion for welding that can be held at a first position fixed to the welding mask body so as to shield the welding mask body from light when the welding mask body is being welded, and at a second position where the welding mask body can be operated manually by the welding mask body to allow the welding mask body to be checked after welding without passing through the light-shielding glass, with at least a portion of the light-shielding glass in the welding mask body being fixed. a welding portion illumination / confirmation light that allows a welding operator to visually check the welded portion without using the light-shielding glass when checking the state after welding while the welding operation light-shielding glass portion is held at the second position; and The welding machine is provided with a power supply unit for irradiating the light for illumination and confirmation, which is provided on the inner part facing the face of the welding operator. This welding mask is characterized in that when a welding operator checks a welded part after welding, the welding work light-shielding glass part is held in the second position and at the same time, a welding part illumination / confirmation light is automatically turned on without the welding operator having to perform a switch switching operation.

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