Welding light-shielding partition and light-shielding device for steel frame welding

Abstract

To provide a welding light shield with excellent durability. 【Solution means】An outer frame 5 formed by connecting upper and lower horizontal frame members 2 and 3 and left and right vertical frame members 4 and 4, a flat lower panel 8 provided at the lower part inside the outer frame 5, and a flat upper panel 7 provided inside the outer frame 5 above the lower panel 8, a middle horizontal frame member 6 provided between the upper panel 7 and the lower panel 8 for vertically partitioning the inside of the outer frame 5, and a leg member 9 provided at the lower part of the vertical frame member 4. The upper panel 7 has translucency that allows visual recognition from one side to the other side and shields ultraviolet rays, and the lower panel 8 has a higher ultraviolet light shielding rate than the upper panel 7. As a result, compared with the conventional sheet-like ones, by using the panels 7 and 8, it becomes highly durable against the heat of welding, and the landscape and wind resistance can be improved. In addition, the upper panel 7 that shields ultraviolet rays and the lower panel 8 with a high ultraviolet light shielding rate can shield ultraviolet rays. Moreover, it is possible to visually recognize the products transferred over the light shield 1.

Description

Technical Field

[0001] The present invention relates to a welding light-shielding partition and a light-shielding device for steel frame welding.

Background Art

[0002] Conventionally, as this type of product, there is a combination consisting of a rigid frame provided with an upper connecting part and a lower connecting part to connect the upper and lower horizontal frames respectively, and an insertion part into a pedestal formed at the lower end, a pedestal having three or more insertion holes drilled in a straight line on the upper part of the base into which the insertion part is to be inserted, a horizontal frame having an end connecting part to be connected to the upper and lower connecting parts of the rigid frame at the end, and a shielding sheet having tubular parts through which the horizontal frame is to be inserted at the upper and lower edges of a flexible sheet body (for example, Patent Document 1), or a light-shielding partition in which thin tubular bodies are provided symmetrically and stepwise on both side edges of an intermediate plate made of a light-shielding material and on the other side edge of an end plate with a support attached to one side edge, and the thin tubular bodies on each side edge of a plurality of intermediate plates and step plates are alternately arranged vertically with their axial centers aligned, and an axial rod is inserted and joined, and a pedestal is attached to the lower end of the support via a connecting rod so as to be height-adjustable (for example, Patent Document 2).

[0003] In the case of using a light-shielding sheet as in Patent Document 1 above, there are problems such as a short service life due to the heat influence of welding, etc., and after the installation of the light-shielding sheet, it deteriorates over time, and discoloration, deflection, and damage are likely to occur due to the influence of heat and contact with welded products, etc., which impairs the landscape.

[0004] On the other hand, in the case of using an intermediate plate made of a metal material or the like as in Patent Document 2, the service life is longer than that of a light-shielding sheet, but there is a problem that if the product hits the intermediate plate and is damaged during the transportation of products such as steel frames, it is difficult to repair. By the way, in the case of the partition as described above, the product may be transferred over the partition, and since the product cannot be seen through the intermediate plate, it is inconvenient for transferring the product.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] Therefore, the present invention aims to solve the above problems and provides a welding light-shielding partition and a steel-frame welding light-shielding device with excellent durability. [Means for Solving the Problems]

[0007] The invention according to claim 1 is a welding light-shielding partition comprising an outer frame formed by connecting upper and lower horizontal frame members and left and right vertical frame members, a flat lower panel provided at the lower part inside the outer frame, a flat upper panel provided inside the outer frame above the lower panel, a middle horizontal frame member provided between the upper panel and the lower panel for vertically partitioning the inside of the outer frame, and a leg member provided at the lower part of the vertical frame member, wherein the upper panel has translucency allowing visual recognition from one side to the other side and shields ultraviolet rays, and the lower panel has a higher ultraviolet light-shielding rate than the upper panel.

[0008] The invention according to claim 2 is characterized in that the lower panel is made of an opaque material.

[0009] The invention according to claim 3 is characterized in that the upper panel is made of acrylic resin and the lower panel is made of aluminum.

[0010] The invention according to claim 4 is characterized in that the upper panel is made of polycarbonate resin and the lower panel is made of aluminum.

[0011] The invention according to claim 5 is characterized in that the leg member in the front-rear direction is provided at the lower part of the vertical frame member, the outer frame, the middle horizontal frame member and the leg member are made of aluminum, a buffer material having higher elasticity than aluminum is provided on the front and rear lower surfaces of the leg member, and the leg member is self-standing and provided so as to be movable from the installation location.

[0012] The invention according to claim 6 is a welding light-shielding device using the welding light-shielding screen according to claim 3 or 4, wherein the leg members in the front-rear direction are provided at the lower part of the vertical frame member, and the outer frame, the intermediate horizontal frame member, and the leg members are aluminum profile materials. The profile material has groove portions for attaching the edges of the upper panel and the lower panel to the opposing outer surfaces with a square cross-section. A plurality of the welding light-shielding screens are arranged side by side to form a partition wall so as to partition the working place of the steel frame welding and the outside. At least one of the welding light-shielding screens is provided movably in the middle of this partition wall. Except for the movably provided welding light-shielding screen, the adjacent welding light-shielding screens are connected. Buffer materials having higher elasticity than aluminum are provided on the lower surfaces in the front and rear of the leg members of the movably provided welding light-shielding screen. The movably provided welding light-shielding screen is self-standing at the middle and moving places of the partition wall by the leg members, and by moving the movably provided welding light-shielding screen, a passage is formed in the middle of the partition wall, which is characterized in that.

Effects of the Invention

[0013] According to the configuration of claim 1, compared with the conventional sheet-like one, by using a panel, it becomes highly durable against the heat of welding, and the landscape and wind resistance can be improved. In addition, the upper panel that shields ultraviolet rays and the lower panel with a high light-shielding rate can shield ultraviolet rays.

[0014] In addition, it becomes possible to visually recognize the product transferred over the screen.

[0015] According to the configuration of claim 2, it is possible to block ultraviolet rays and visible light harmful to the eyes generated by welding.

[0016] According to the configuration of claim 3, the upper panel is excellent in heat resistance and is difficult to crack, and is suitable for installation at locations easily affected by the heat of welding.

[0017] According to the configuration of claim 4, the upper panel is less likely to be damaged, is inexpensive, and can be installed inexpensively at a location where the influence of heat is relatively small.

[0018] According to the configuration of claim 5, the working space and the outside are partitioned by a plurality of screens, and by moving some of the screens from the installation location, a passage can be formed between the working space and the outside. Also, by providing a buffer material on the legs of the screens installed at uneven locations such as the factory floor, wobbling can be prevented and the movable screens can be installed stably.

[0019] According to the configuration of claim 6, in steel frame welding where heat generation is large, the partition wall formed by arranging screens to partition the working place and the outside can shield ultraviolet rays from the outside and has excellent durability. Also, the movable screens can be moved, and products and the like can be transported between the welding location and the outside using the passage. Since the movable screens are provided with buffer materials, they can be installed stably before and after movement. Furthermore, since the upper and lower panels are attached by inserting the edges into the groove portions of the profiles, in case of damage, the profiles can be disassembled and the upper and lower panels can be easily replaced.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0021] A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiments described below do not limit the content of the present invention described in the scope of utility model registration. Also, not all of the configurations described below are essential requirements of the present invention.

Example

[0022] Figs. 1 to 6 show Example 1 of the present invention. As shown in the figures, the welding light-shielding partition 1 forms an outer frame 5 by connecting upper and lower horizontal frame members 2 and 3 and left and right vertical frame members 4 and 4 erected on the left and right. Inside this outer frame 5, an intermediate horizontal frame member 6 is provided at the center in the height direction of the upper and lower horizontal frame members 2 and 3. Inside the outer frame 5, a flat upper panel 7 is provided above the horizontal frame member 6, and a flat lower panel 8 is provided below the horizontal frame member 6. The upper and lower panels 7 and 8 close the inside of the outer frame 5. Note that the height dimensions of the lower panel 8 and the upper panel 7 are the same. Also, in this example, the inside of the outer frame 5 is closed by two panels 7 and 8, but it may be closed by three or more panels as in Example 2 described later.

[0023] Also, the lower part of the vertical frame member 4 extends downward from the position of the lower horizontal frame member 3, and leg members 9 and 9 in the front-rear direction are fixed to the lower ends of the vertical frame members 4 and 4. The lower end of the vertical frame member 4 is fixed to the upper surface at the center in the front-rear direction of this leg member 9.

[0024] The horizontal frame members 2, 3, and 6, the vertical frame members 4 and 4, and the leg members 9 and 9 are made of a profile 10 such as an aluminum extrusion molding. The substantially square cross-section shown in Fig. 2 is continuous in the length direction, and substantially T-shaped groove portions 12 are formed at the center in the width direction of the four side surfaces 11, 11, 11, and 11. These groove portions 12, 12, 12, and 12 integrally have a central portion 13 and hollow corner portions 14, 14, 14, and 14 provided in four directions from this central portion 13.

[0025] Then, as shown in FIG. 2, the edge portions 7F and 8F of the upper and lower panels 7 and 8 are inserted into the groove portion 12, and a packing material 15 is disposed between the edge portions 7F and 8F and the groove portion 12 to fix the edge portions 7F and 8F to the frame members 2, 3, 4, and 6.

[0026] Also, the profile members 10 are assembled by connecting them to each other by a known connection structure (not shown). The connection structure includes connection bolts, connection brackets, connection connectors, connection nut bodies, etc., which are not shown respectively. The connection bolts and the connection nut bodies are used in the same manner as the bolt 42 and the nut body 41 described later.

[0027] In the center in the depth direction of the T-shaped groove portion 12, a rectangular wide portion 12W is formed. A rectangular connection nut body is inserted into this wide portion 12W from the end of the frame member, and the connection bolt is screwed into this connection nut body to connect the profile members 10 to each other, and the screen 1 can be assembled. Similarly, the above connection structure can be used for connecting the profile members 10 to each other hereinafter. When assembling, the connection bolt may be screwed into the profile member 10, or the profile members may be connected to each other using only the connection bolt. Conversely, by disassembling the frame members 2, 3, 4, and 6 assembled by the connection structure, the upper and lower panels 7 and 8 can be replaced with new ones.

[0028] The upper edge portion 7F of the upper panel 7 is attached to the lower groove portion 12 of the upper horizontal frame member 2, the lower edge portion 7F of the upper panel 7 is attached to the upper groove portion 12 of the middle horizontal frame member 6, the upper edge portion 8F of the lower panel 8 is attached to the lower groove portion 12 of the middle horizontal frame member 6, and the lower edge portion 8F of the lower panel 8 is attached to the upper groove portion 12 of the lower horizontal frame member 3. Also, the left and right edge portions 7F and 8F of the upper and lower panels 7 and 8 are attached to the inner groove portions 12 and 12 of the left and right vertical frame members 4.

[0029] Also, connect the leg member 9 and the lower end of the vertical frame member 4 with a connecting tool such as a bolt (not shown). For example, insert a bolt (not shown) from the groove portion 12 below the leg member 9 to the central portion 13 of the leg member 9, and screw the upper end of this bolt into the through hole 13T of the central portion 13 of the leg member 9 for fixation. Further, as shown in FIG. 2, arrange substantially L-shaped brackets 21 before and after the lower end of the leg member 9, and fix the vertical piece portion 22 of this bracket 21 to the front and rear surfaces of the vertical frame member 4 with a connecting tool such as a bolt (not shown), and at the same time, fix the horizontal piece portion 23 of the bracket 21 to the front upper surface and the rear upper surface of the leg member 9 with a connecting tool such as a bolt (not shown).

[0030] In addition, as the bolt screwed into the through hole 13T, a bolt that cuts a thread in the through hole 13T like a tapping screw can be used. Alternatively, in order to enable screwing of the bolt, the through hole 13T at the necessary location may be tapped.

[0031] As shown in FIG. 4, provide a light-shielding device 31 for steel structure welding on the floor surface 30 of a factory where welding is performed. This light-shielding device 31 arranges a plurality of light-shielding partitions 1, 1,... side by side left and right so as to surround or partition the steel structure welding site from the outside. Also, at the corners of the partitions 1, 1, the partitions 1, 1 are arranged in the intersecting direction in plan view, and connect the vertical frame members 4, 4 at the ends of adjacent light-shielding partitions 1 with a connecting member 33 to form a partition wall 32. Further, in the middle of the partition wall 32, there is an open portion 34 serving as a passage in which at least one partition 1 is provided movably. This open portion 34 can be blocked by the movable partition 1. If the movable partition 1 is moved from the open portion 34, it is possible to go back and forth between the welding location and the outside through the open portion 34, or to take in and out products and devices. And the above light-shielding device 31 for steel structure welding is particularly suitable for light shielding during semi-automatic long-time continuous welding. Note that steel structure welding uses arc welding for steel structure welding and does not include laser welding.

[0032] In the screen 1 provided in the opening 34, buffer members 24 made of a rubber material or the like, which are setting blocks, are provided on the lower surfaces in the front and rear of the leg member 9. And this buffer member 24 is a rubber-made square setting block for receiving the vertical load of the screen 1, which is placed on the floor surface 30 made of a concrete surface or the like, and a material with higher elasticity than the aluminum leg member 9 is used.

[0033] In addition, except for the screen 1 provided in the opening 34, the leg member 9 may be fixed to the floor surface 30 of the factory by an anchor (not shown). In the case of fixing, there are cases where the buffer member 24 is used and cases where it is not used.

[0034] As shown in FIGS. 5 and 6, the connecting member 33 includes nut bodies 41, bolts 42, washers 43, and a connecting plate 44. A pair of through holes 45, 45 are formed in the connecting plate 44. The nut bodies 41, 41 are inserted into the wide portions 12W, 12W from the ends of the adjacent vertical frame members 4, 4, and the bolts 42, 42 inserted through the washers 43 and the through holes 45 are screwed into the nut bodies 41, 41 of the vertical frame members 4, 4, and the adjacent vertical frame members 4, 4 are connected by the connecting plate 44.

[0035] In addition, a tool engaging portion 42K into which a hexagonal wrench or the like is fitted is provided on the head of the bolt 42. Further, the nut body 41 can be used together with a nut holder (not shown), and the square nut body 41 is in a state of being prevented from rotating within the wide portion 12W.

[0036] The upper panel 7 has translucency that allows objects on one side (the outside of the welding operation) to be visible from the other side (the welding operation side) under normal lighting conditions in the factory, and shields at least a part of the ultraviolet rays generated during welding operations or the like. Examples include polycarbonate (registered trademark: Sumitomo Bakelite Co., Ltd.) made of a polycarbonate plate material with a gray smoky color.

[0037] In this way, since the upper panel 7 has translucency that allows objects on one side (the outside of the welding operation) to be visible from the other side (the welding operation side), when transferring products and materials over the partition 1 using an overhead crane or the like, the operation can be performed while visually confirming. Also, unlike the case where the work area and the outside are partitioned by opaque materials, since the operators on both sides inside and outside the partition 1 can see each other, the operator can construct a work space where work can be stably performed without feeling loneliness or alienation. And from the perspective of disaster prevention, the operator at the welding site can be recognized from the outside through the partition at eye level of a person.

[0038] The lower panel 8 is a plate made of aluminum (including aluminum alloy), which is an opaque material, and a material with a higher ultraviolet light shielding rate than the upper panel 7 is used. Even if it is not made of aluminum, it can be made of metal, for example, in Claims 1 and 2, materials made of iron, stainless steel, copper, or titanium can be used. Also, in Claims 1 and 2, the outer frame 5 and the intermediate horizontal frame member 6 can also be made of materials such as iron, stainless steel, copper, or titanium.

[0039] In this way, in this embodiment, corresponding to Claim 1, there is a welding light-shielding partition 1 including an outer frame 5 formed by connecting the upper and lower horizontal frame members 2 and 3 and the left and right vertical frame members 4 and 4, a flat lower panel 8 provided at the lower part inside the outer frame 5, a flat upper panel 7 provided inside the outer frame 5 above the lower panel 8, an intermediate horizontal frame member 6 provided between the upper panel 7 and the lower panel 8 and vertically partitioning the inside of the outer frame 5, and a leg member 9 provided at the lower part of the vertical frame member 4. The upper panel 7 has translucency that allows the other side to be visible from one side and shields ultraviolet rays. Since the lower panel 8 has a higher ultraviolet light shielding rate than the upper panel 7, compared with the conventional sheet-like ones, by using the panels 7 and 8, it becomes highly durable against the heat of welding and can improve the landscape and wind resistance. Also, the upper panel 7 that shields ultraviolet rays and the lower panel 8 with a high ultraviolet light shielding rate can shield ultraviolet rays. Moreover, it is possible to visually confirm the products transferred over the partition 1.

[0040] Thus, in this embodiment, corresponding to claim 2, since the lower panel 8 is made of an opaque material, it is possible to block ultraviolet rays and visible light harmful to the eyes generated by welding.

[0041] Thus, in this embodiment, corresponding to claim 4, since the upper panel 7 is made of polycarbonate resin and the lower panel 8 is made of aluminum, the upper panel 7 is less likely to be damaged, is inexpensive, and can be installed inexpensively in places where the influence of heat is small.

[0042] Thus, in this embodiment, corresponding to claim 5, a leg member 9 in the front-rear direction is provided at the lower part of the vertical frame member 4, the outer frame 5, the intermediate horizontal frame member 6, and the leg member 9 are made of aluminum, and buffer materials 24 having higher elasticity than aluminum are provided on the front and rear lower surfaces of the leg member 9. Since it is self-supporting by the leg member 9 and is provided so as to be movable from the installation location, the work space and the outside are partitioned by a plurality of screens 1, and by moving a part of the screens 1 from the installation location, an open portion 34 serving as a passage can be formed between the work space and the outside. By providing the buffer material 24 at the legs of the screen 1 installed in an uneven place such as the factory floor 30, wobbling can be prevented and the movable screen 1 can be stably installed.

[0043] Thus, in this embodiment, corresponding to claim 6, there is provided a light-shielding device 31 for steel frame welding using the light-shielding partition 1 for welding described in claim 3 or 4. A leg member 9 in the front-rear direction is provided at the lower part of the vertical frame member 4. The outer frame 5, the intermediate horizontal frame member 6, and the leg member 9 are made of aluminum profile 10. The profile 10 has groove portions 12 for attaching the edges 7F and 8F of the upper panel 7 and the lower panel 8 to the opposing outer surfaces with a square cross-section. A plurality of light-shielding partitions 1 for welding are arranged to form a partition wall 32 so as to partition the working place of steel frame welding from the outside. At least one light-shielding partition 1 for welding is movably provided in the middle of this partition wall 32. Except for the movably provided light-shielding partition 1 for welding, adjacent light-shielding partitions 1, 1 are connected. Buffer materials 24 having higher elasticity than aluminum are provided on the front and rear lower surfaces of the leg member 9 of the movably provided light-shielding partition 1 for welding. The movably provided light-shielding partition 1 for welding is self-standing in the middle of the partition wall 32 and at the moving place by the leg member 9. By moving the movably provided light-shielding partition 1 for welding, an open portion 34 serving as a passage is formed in the middle of the partition wall 32. Therefore, in steel frame welding where a large amount of heat is generated, the partition wall 32 formed by arranging the partitions 1 so as to partition the working place from the outside can shield ultraviolet rays from the outside and has excellent durability. Also, by moving the movably provided partition 1 and using the open portion 34 serving as a passage, products and the like can be transported between the welding place and the outside. Since the buffer material 24 is provided on the moving partition 1, it can be stably installed before and after moving. Furthermore, since the upper and lower panels 7 and 8 have a structure in which the edges 7F and 8F are inserted into the groove portions 12 of the profile 10 for attachment, when damaged, the profile 10 can be disassembled and the upper and lower panels 7 and 8 can be easily replaced.

Embodiment

[0044] FIG. 7 shows Embodiment 2 of the present invention. The same parts as those in Embodiment 1 are denoted by the same reference numerals, and the description thereof is omitted and will be described in detail.

[0045] The welding light shield partition 1 in this example is formed higher than that in Example 1. The vertical frame members 4, 4 are formed longer than those in Example 1. The upper horizontal frame member 2 is attached to the upper parts of the left and right vertical frame members 4, 4 that are formed longer. An upper intermediate horizontal frame member 51 is attached at the height position of the upper horizontal frame member 2 in Example 1.

[0046] Also, inside the outer frame 5, an upper panel 7 is provided between the upper intermediate horizontal frame member 51 and the intermediate horizontal frame member 6. An extended upper panel 52 with a smaller height dimension than the upper panel 7 is provided between the upper horizontal frame member 2 and the upper intermediate horizontal frame member 51. Note that the height dimensions of the lower panel 8 and the upper panel 7 are the same, and the height dimension of the extended upper panel 52 is smaller than those of these panels 7, 8. Note that the part above the horizontal frame member 51 of the partition 1 in this Example 2 is the extended part of the partition 1 in Example 1.

[0047] The edge 52F of the extended upper panel 52 is attached to the groove parts 12, 12 of the vertical frame members 4, 4, the upper groove part 12 of the upper intermediate horizontal frame member 51, and the lower groove part 12 of the horizontal frame member 2, similar to the edge parts 7F, 8F of the panels 7, 8 shown in FIG. 2.

[0048] The upper panel 7 and the extended upper panel 52 are made of acrylic plates in cobalt blue, which have translucency that allows objects on one side (the outside of the welding operation) to be visible from the other side (the welding operation side) under normal lighting conditions in the factory, and shield at least part of the ultraviolet rays generated during welding operations and the like.

[0049] For the outer frame 5, the intermediate horizontal frame member 6, and the upper intermediate horizontal frame member 51, in Claims 1 and 2, those made of iron, stainless steel, copper, or titanium can be used. Also, although not corresponding to Claims 5 and 6, it is preferable that the upper intermediate horizontal frame member 51 is also made of an aluminum profile.

[0050] Thus, in this embodiment, the welding light-shielding screen 1 includes an outer frame 5 formed by connecting upper and lower horizontal frame members 2 and 3 and left and right vertical frame members 4 and 4, a flat lower panel 8 provided at the lower part inside the outer frame 5, a flat upper panel 7 provided inside the outer frame 5 above the lower panel 8, a horizontal frame member 6 provided between the upper panel 7 and the lower panel 8 for vertically partitioning the inside of the outer frame 5, and a leg member 9 provided at the lower part of the vertical frame member 4. Therefore, corresponding to claims 1, 2, 4, and 5, it has the same operations and effects as those of the above-described embodiment 1.

[0051] Thus, in this embodiment, corresponding to claim 3, since the upper panel 7 is made of an acrylic resin and the lower panel 8 is made of aluminum, the upper panel 7 has excellent heat resistance and is less likely to crack, and is suitable for installation at locations that are easily affected by the heat of welding.

[0052] Also, as an effect in the embodiment, compared with the case of using one custom-made upper panel with a large height dimension, by using two upper panels 7 with a standard width and an extended upper panel 52 with a narrower width than this, the screen becomes inexpensive.

[0053] Note that the present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, although the color of the panel is exemplified in the embodiment, the color of the panel can be appropriately selected. Also, the upper panel of Embodiment 1 may be made of acrylic, the upper panel and the extended upper panel of Embodiment 2 may be made of polycarbonate, or one of the upper panel and the extended upper panel of Embodiment 2 may be made of acrylic and the other may be made of polycarbonate. Furthermore, in claims 1 and 2, panels of various materials can be used. Needless to say, "made of aluminum" includes made of an aluminum alloy. Furthermore, in Embodiment 2, the upper panel may be arranged at the uppermost part of the outer frame, the extended upper panel may be arranged below this upper panel, and an upper intermediate horizontal frame member may be arranged between the upper panel and the extended upper panel. Furthermore, the screens of claims 1 to 5 can be used for various types of welding.

Explanation of Reference Numerals

[0054] 1 Welding light-shielding screen 2 Horizontal frame member 3 Horizontal Frame Member 4 Vertical Frame Member 5 Outer Frame 6 Horizontal Frame Member (Middle Horizontal Frame Member) 7 Upper Panel 7F Edge 8 Lower Panel 8F Edge 9 Leg Member 10 Profile 24 Buffer Material 30 Floor Surface 31 Light Shielding Device for Steel Structure Welding 32 Partition Wall 33 Connecting Member 34 Open Part (Passageway) 52 Extended Upper Panel

Claims

1. The outer frame is made up of the upper and lower horizontal frames and the left and right vertical frames. A flat lower panel provided at a lower portion within the outer frame; a flat upper panel provided within the outer frame above the lower panel; An intermediate horizontal frame member provided between the upper panel and the lower panel and dividing the outer frame into upper and lower parts; A leg member provided at the lower part of the vertical frame member; A welding light-shielding screen comprising: the upper panel has a translucency that allows one side to be seen from the other side and blocks ultraviolet rays; A light-shielding partition for welding, characterized in that the lower panel has a higher ultraviolet ray shielding rate than the upper panel.

2. 2. A light-shielding screen for welding according to claim 1, wherein said lower panel is made of a light-opaque material.

3. 3. A light-shielding screen for welding according to claim 2, wherein said upper panel is made of acrylic resin and said lower panel is made of aluminum.

4. 3. The welding light-shielding screen according to claim 2, wherein said upper panel is made of polycarbonate resin and said lower panel is made of aluminum.

5. A welding shading screen as described in claim 3 or 4, characterized in that the leg members in the front-to-back directions are provided at the lower part of the vertical frame material, the outer frame, the intermediate horizontal frame material and the leg members are made of aluminum, and a cushioning material which is more elastic than aluminum is provided on the front and rear undersides of the leg members, the leg members being self-supporting and movable from the installation location.

6. A light shielding device for steel frame welding using the light shielding screen for welding according to claim 3 or 4, The leg members are provided in the front-rear direction at the lower part of the vertical frame members, and the outer frame, the intermediate horizontal frame members and the leg members are aluminum shaped members, The mold member has grooves on opposing outer surfaces of a rectangular cross section for attaching edges of the upper panel and the lower panel, A plurality of the welding light-shielding screens are arranged to form a partition wall so as to separate the steel frame welding work area from the outside, and at least one of the welding light-shielding screens is provided in a movable manner in the middle of the partition wall, Connecting adjacent welding light-shielding partitions except for the movably provided welding light-shielding partition; A shading device for steel frame welding, characterized in that a cushioning material having a higher elasticity than aluminum is provided on the undersides of the front and rear leg members of the movably installed welding shading screen, the movably installed welding shading screen is supported by the leg members in the middle of the partition wall and at the moved location, and by moving the movably installed welding shading screen, a passage is formed in the middle of the partition wall.

Images