JP4614225B2 - Single-side welding equipment - Google Patents

Description

The present invention relates to a single-sided automatic welding equipment for welding a material to be welded supplied on a backing device such as a flux backing member and / or a copper plate backing device by a traveling welding machine that travels in the longitudinal direction of the backing device in relates to one side welding equipment for supporting the material to be welded.

  In the single-sided automatic welding equipment, a backing member such as a flux backing member and / or a copper plate backing member, and a welding device that straddles the backing member and can travel in the longitudinal direction of the backing member are provided. . In the welding apparatus, a pair of girders (rails) extending in a direction perpendicular to the longitudinal direction of the backing member are provided outside both ends in the longitudinal direction of the backing member. Each saddle travels in the longitudinal direction of the girder, and the welder travels on the welder beam spanned between the pair of saddles.

  In such a single-sided welding facility, the position where the backing member is disposed is such that the panel on which the steel plate to be welded is temporarily fixed has a weld line (also referred to as a seam) as the temporary attachment portion coincides with the backing member. The saddle moves on the girder in the longitudinal direction of the girder (parallel to the longitudinal direction of the backing member), that is, moves in a direction perpendicular to the longitudinal direction of the backing member. Positioning above the backing member, after which the welder moves on the welder beam, i.e. moves in the longitudinal direction of the backing member, and the welder moves along the welding line so that welding is performed. Made. Such single-sided welding apparatuses are disclosed in Patent Documents 1 and 2.

Japanese Utility Model Publication No. 50-53429 Japanese Utility Model Publication No. 53-21617

  However, in these conventional techniques, there is one backing device and one welding machine that runs on the beam of the welding machine. Two or more welded steel plates are temporarily attached to three or more steel plates to be welded. There is no disclosure about the case where a panel having a wire is welded in one run by two or more welders.

  However, an object to be welded in such a single-sided automatic welding facility is a marine structural material or the like, and such a structural material is extremely large. For this reason, it is necessary to manufacture one structural material panel from a large number of three or more steel plates to be welded. At that time, it is necessary to simultaneously weld a plurality of welding lines to increase the welding efficiency. Therefore, in a recent single-side welding apparatus, a plurality of backing devices are installed in parallel to each other so that the girder is orthogonal to the longitudinal direction of the backing device in the vicinity of both ends in the longitudinal direction of the backing device. A plurality of saddles installed on the girder are provided, and a plurality of pairs of saddles support a plurality of welder beams extending in parallel with the backing device. When a single welding machine runs, a plurality of weld lines of the panel are welded simultaneously.

  In this case, the panel is conveyed so that its weld line is positioned on a backing member such as a flux backing member and / or a copper plate backing member of the backing device. In the vicinity of each backing member, there is a roller member configured by arranging a plurality of rollers along the longitudinal direction of the backing member, and the panel is supported by each roller member in the vicinity of this backing member. Is done. However, the welded steel sheet itself is also enlarged due to the increase in the size of the panel, and therefore the spacing between the backing members is increased. For this reason, the to-be-welded steel plate supported between the roller members in the vicinity of the backing member hangs down due to its own weight at the portion between the roller members, causing a trouble in welding. Note that a pair of roller devices configured by arranging a plurality of rollers along the longitudinal direction of the backing member are installed on the outermost side of the plurality of backing devices. Thus, both side portions of the panel are supported by the roller device.

  The backing member of the backing device is installed on one backing carriage for each backing member and roller member together with the roller member in the vicinity of the backing member described above. It runs on a pair of rails arranged in the vicinity of both ends in the longitudinal direction so as to extend in a direction perpendicular to the longitudinal direction of the backing member. In this way, the backing carriage travels on the rail and adjusts its position so that the mutual spacing of the backing members and the position of the backing member can be aligned with the position of the welding line of the panel. It has become.

  Therefore, the width of the steel plate to be welded on which the panel is large and temporarily fixed is wide, and when the welding line interval is large, the mutual interval between the backing carts is also large. For this reason, the space | interval between roller members is also large, and the center part of the wide to-be-welded steel plate will hang down with dead weight. In order to prevent this sagging, it is conceivable that the roller member is placed on the backing carriage so as to be separated from the backing member, and the roller members are arranged so as to be as evenly spaced as possible. However, if this is done, the backing carriage on which the backing member and the roller member are mounted will be large, and when welding a panel with a small weld line interval, interference will occur between the backing carriages, and the backing It becomes impossible to make the mutual space | interval of a member small. Depending on the design of the ship's hull, the width of the steel plate to be welded varies, and it is necessary for the single-side welding apparatus to be able to weld in these various welding modes. Therefore, it is impossible to take measures to increase the size of the backing truck.

  For this reason, in a single-sided automatic welding device equipped with a plurality of existing backing devices, a roller is installed on the floor between the backing devices, or a column whose upper end is bent like an arm The part of the steel plate to be welded between the members is supported. However, since these rollers and columns are fixed to the floor of the factory, there is a problem that these rollers and columns are not always located at the center between the backing devices that are moved in alignment with the position of the welding line. There is a point. If there are two backing devices, the backing device may be positioned at an equal distance around the roller and support, but if there are three or more backing devices, the welding interval is specific. Only the roller and the strut are located in the middle between the backing devices, but when the welding interval deviates from this particular case, the rollers and the struts are not located in the middle between the backing devices. In extreme cases, the rollers and columns fixed to the floor may interfere with the running of the backing cart, and hinder the placement of the backing device in line with the panel welding line.

The present invention was made in view of the above problems, in its one side welding apparatus arranged a plurality of Urato carriage, regardless of the number of Urato truck, the panel portion between Urato carriage, always and to provide a one-side welding equipment that can be supported by the auxiliary carriages in the middle between Urato truck.

Sided welding apparatus according to the present invention includes a pair of backing carriage having a carriage body which runs parallel to arranged respectively opposite directions to each other, and auxiliary carriages disposed between the pair of backing truck, anda backing member mounted on said respective backing truck, before Symbol auxiliary carriages includes a plurality of carriage body traveling in the direction of travel in the same direction of the backing truck, longitudinal auxiliary carriages A frame that extends in parallel to the main body of the auxiliary truck and connects the main bodies of the auxiliary truck, a support section that is installed on the frame and supports the panel, and is spaced apart in the longitudinal direction of the frame. Two gears supported rotatably, and two pairs of racks that are provided in a pair for each gear and mesh with the corresponding gears in the running direction of the bogie body of the backing cart, The bogie body of the backing cart and the bogie body of the auxiliary cart Are provided at positions shifted from each other in the longitudinal direction of the backing carriage and the auxiliary carriage and do not interfere with each other during the movement, and one of the pair of racks provided for each gear is one of One of the pair of backing carts is fixed so as to be perpendicular to the longitudinal direction, and the other is fixed to the other of the pair of backing carts so as to be perpendicular to the longitudinal direction. And the gear and the rack position the auxiliary cart at a central position between the backing carts when the backing cart travels, and the racks are respectively fixed to the backing carts. The opposite side portion enters the lower side of the other backing truck that forms a pair with the backing truck, so that it does not interfere with the approach of the auxiliary carriage and the backing carriage. To do.

Oite the single-sided welding equipment, provided on the carriage body, preferably it has a pressing roller for restraining the back of the rack.

  According to the present invention, when the gear meshes with both of the pair of racks and the gear rotates, the pair of racks move relative to the gear in a direction toward each other or in a direction away from each other. Accordingly, the pair of backing carts move relative to the auxiliary cart in a direction approaching each other or in a direction separating from each other. Therefore, the position of one backing truck is adjusted according to the welding line of the panel, and the distance between the other backing carriage and the one backing carriage is adjusted so that the position of the other backing carriage is the other welding of the panel. When adjusted so as to coincide with the line, the auxiliary carriage provided with the gear meshing with the rack moves so as to be surely located at the center position between the backing carriages. Thus, regardless of the distance between the backing devices, the auxiliary cart is always located at the center position between the backing carts, and the support portion of the auxiliary cart supports the central portion between the weld lines of the panel from below. Therefore, there is no sagging (deflection) of the welded steel plate, and as a result of the welded steel plate correctly facing the weld line, high precision welding is possible, and a panel that matches the design value with high precision can be manufactured. In addition, since the auxiliary cart moves in conjunction with the movement of the backing cart, a driving device for the auxiliary cart is unnecessary. Therefore, the width of the auxiliary carriage (the length in the opposite direction of the backing carriage) can be reduced, and the minimum approach distance between the backing carriages can be reduced despite the provision of the auxiliary carriage. A wide range of panels can be welded simultaneously from a panel having a small weld line interval to a large panel.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. 1A and 1B are views for explaining the principle of the present invention. FIG. 1A is a schematic plan view showing the mutual relationship between a pair of racks 1 and 2 and a gear 3, and FIG. 3 is a schematic plan view showing a mutual relationship with a carriage 6. FIG. The racks 1 and 2 are fixed to the backing carts 4 and 5 so that the surfaces on which the teeth are formed are opposed to each other and the arrangement direction of the teeth is perpendicular to the longitudinal direction of the backing carts 4 and 5. ing. A gear 3 is provided on the auxiliary cart 6 so as to be rotatable with its rotation axis vertical, and this gear 3 is disposed on the auxiliary cart 3 so as to mesh with both teeth of the racks 1 and 2. The sets of these racks 1 and 2 and the gear 3 are disposed at two locations that are separated from each other in the longitudinal direction of the backing devices 1 and 2 and the auxiliary carriage 6.

  In FIG. 1B, when the gear 3 rotates clockwise, the rack 1 moves to the right and the rack 2 moves to the left relative to the gear 3, and the backing carts 4 and 5 are mutually connected. It moves relative to the gear 3 in the direction approaching. On the other hand, when the gear 3 rotates counterclockwise, the rack 1 moves to the left and the rack 2 moves to the right relative to the gear 3, and the backing carts 4 and 5 are separated from each other. Relatively to the gear 3. If the backing truck 5 is stopped, the rack 2 does not move. Therefore, when the gear 3 moves toward the backing carriage 5 by (1/2) · L according to the rotation angle of the gear 3, the rack 2 moves to the left (1/2) · L relative to the gear 3. Therefore, the rack 1 moves to the right relative to the gear 3 by (1/2) · L. Since the rack 2 does not move, the rack 1 eventually moves to the right by L, the backing carriage 4 moves to the right by L, and the auxiliary carriage 6 moves to the right by (1/2) · L. Therefore, even if the backing carts 4 and 5 move to a predetermined position according to the welding line of the panel, the auxiliary cart 6 always moves to the center between the backing carts 4 and 5. Therefore, the support part provided on the auxiliary cart 6 always supports the central part between the backing members of the panel from below.

  By arranging such an auxiliary cart 6 between the respective backing devices, a plurality of welding lines can be welded simultaneously so that the steel plate to be welded does not hang down even with a large panel.

Next, an embodiment of the present invention will be specifically described. Figure 2 is a front view, showing a one-side welding equipment according to an embodiment of the present invention, (a) shows the state where the backing truck 4,5 is farthest from the auxiliary carriages 6, (b) the backing carriage 4 , 5 indicate the state closest to the auxiliary cart 6. FIG. 3 is a plan view showing the auxiliary cart 6. FIG. 4 is a plan view showing a rack and a gear portion.

  As shown in FIG. 2, the backing cart 4 (5) of the backing device 50 has a cart body 51 and a pair of wheels 52 and 53 that are separated in a direction perpendicular to the longitudinal direction of the backing member. The carriage main body 51 can be moved by the wheels 52 and 53 so as to approach and separate from each other. In the backing device 50, a flux backing member 54 and a copper plate backing member 55 are mounted on the backing carriage 4 (5). The flux backing member 54 and the copper plate backing member 55 are backing members extending perpendicular to the paper surface in FIG. The flux backing member 54 disperses the flux in the toy extending perpendicularly to the paper surface, stores the flux in the toy, raises the toy, and transports the flux onto the panel welding line. It is pressed against the bottom surface. The copper plate backing member 55 raises and presses the copper plate arranged so as to extend perpendicular to the paper surface to the lower surface of the weld line of the panel. Below these flux backing members 54 and copper plate backing members 55, there are provided recovery portions 58 for recovering the solidified flux and molten metal after use. Further, a roller device 56 for supporting the panel is provided between the flux backing member 54 and the copper plate backing member 55 in each backing device 50. Further, the flux backing device 54 and the copper plate are provided. A pair of roller devices 57 for supporting the panel are also provided on both outer sides of the backing device 55. The roller device 56 rolls and rotates on the panel without having a driving device, and the roller device 57 has a motor installed on each roller and is rotated to carry the panel onto the roller device 57. The panel on the device 57 is carried out. Further, a magnet suction device 59 is disposed on the same base as the base of the roller 56, that is, between the flux backing member 54 and the copper plate backing member 55, and magnetically attracts and fixes the panel. Thus, the panel is prevented from being lifted when the backing member is pressed against the lower surface of the panel.

  On the other hand, as shown in FIG. 3, the auxiliary cart 6 has, for example, nine cart bodies 10 separated in the longitudinal direction. As shown in FIG. 2, each carriage body 10 has two wheels 11 and 12 that are separated in the same direction as the wheels 52 and 53 of the backing truck 4 (5), and the backing truck on the rail 17. It can move in the same direction as 4 (5). In addition, the space | interval of the wheels 11 and 12 of the trolley | bogie main body 10 differs every other, and the trolley | bogie main body with a wide wheel space | interval and the bogie main body with a narrow wheel space | interval are arrange | positioned alternately. A long frame 14 extending in parallel with the longitudinal direction of the backing member is fixed on each cart body 10 so as to connect each cart body 10, and this frame 14 is supported by all the cart bodies 10. Has been. A plurality of support columns 15 are erected on the frame 10 so as to be separated from each other in the longitudinal direction, and a roller 13 is attached to the upper end portion of the support column 15 in the longitudinal direction of the frame 14. It is installed so as to be able to rotate at right angles to. The lower surface of the panel is supported by the plurality of rollers 13. When the panel is carried in and out in the longitudinal direction of the backing member, this roller rolls on the lower surface of the panel and rotates.

  As shown in FIG. 3, the gear 14 is provided on the frame 14 of the auxiliary carriage 6 at two positions spaced apart in the longitudinal direction with the rotation axis thereof being vertical. As shown in FIG. 2, a gear support 16 is fixed to the lower surface of the frame 14, and as shown in FIGS. 2 and 4, the gear 3 has its rotational axis on the gear support 16. It is installed vertically and rotatable. On the other hand, as shown in FIG. 4, in the backing carts 4 and 5, racks 1 and 2 are swung by pins 25 and 26, respectively, on backing cart frames 21 and 22 extending in the longitudinal direction of the backing member. Supported as possible. In the gear support portion 16 installed on the auxiliary carriage frame 14, press rollers 23 and 24 are installed in the vicinity of the gear 3 with their rotation axes vertical, and the press rollers 23 and 24, the gear 3, Racks 1 and 2 are interposed between the two. As a result, the pressing rollers 23 and 24 restrain the back surfaces of the racks 1 and 2 so that the racks 1 and 2 are not detached from the gear 3 and maintain the meshed state of the racks 1 and 2 and the gear 3.

  The carriage main body 10 of the auxiliary carriage 6 and the carriage main bodies 51 of the backing carriages 4 and 5 are provided at positions shifted from each other in the longitudinal direction of the frame 14, that is, the longitudinal direction of the backing member. . Therefore, as shown in FIG. 2B, the backing carts 4 and 5 and the auxiliary carts 6 are moved to a position where the frame 14 of the auxiliary cart 6 and the cart bodies 51 of the backing carts 4 and 5 are almost in contact with each other. Can approach. That is, the backing carts 4 and 5 can approach each other regardless of the length of the cart body 10 determined by the distance between the wheels 11 and 12 of the auxiliary cart 6, and the width of the frame 14 is the backing carts 4 and 5. The minimum approach distance.

  Next, the operation of the single-side welding apparatus configured as described above will be described. First, the positions of the backing devices 4 and 5 are adjusted according to the position or interval of the welding line of the panel to be welded. For example, the position of the right backing device 50 shown in FIG. 2 is adjusted to the predetermined welding line position of the panel to be transported by driving the backing cart 5. Thereafter, the backing cart 4 of the left backing device 50 is driven, and the interval between the backing cart 4 and the backing cart 5 of the left backing device 50 is adjusted to the interval between the welding lines, The position of the left backing device 50 is also adjusted to a predetermined weld line position of the panel. Thereafter, the panel is arranged so that the panel is conveyed to the place where the backing device is disposed and the weld line is on the backing member. A plurality of welders run on a welder beam provided in parallel to the backing member, and an arc is generated by a welding wire fed from a torch of the welder to temporarily attach the panel to the groove. Are welded along the weld line.

  In this case, when the backing carts 4 and 5 are moved to match the position of the welding line, the gear 3 of the auxiliary cart 6 and the racks 1 and 2 of the backing carts 4 and 5 are engaged with each other. As shown in FIG. 1, when the left backing truck 4 moves by L, the auxiliary carriage 6 moves by (1/2) · L in the same direction as the backing truck 4. Therefore, if the position of the auxiliary cart 6 is in the center position between the backing carts 4 and 5 before the auxiliary cart 6 is moved, the position of the auxiliary cart 6 is between the backing carts 4 and 5 after the movement. It remains in the center position. Therefore, when the panel is conveyed to the place where the backing device is disposed, the roller 13 of the auxiliary cart 6 always supports the panel from below at the center position between the backing carts 4 and 5. Therefore, the roller 13 of the auxiliary cart can effectively prevent the panel from drooping due to its own weight, and high-quality and high-precision welding is possible.

  Further, even if the types of panels are different and the welding line intervals are also different, the auxiliary cart 6 moves with the movement of the backing carts 4 and 5 and obstructs the movement of the backing carts 4 and 5. There is no. Therefore, the versatility with respect to the panel type of this single-sided welding apparatus is excellent. Moreover, since the auxiliary cart 6 always supports the panel at the center position between the backing carts 4 and 5 regardless of the type of panel, that is, the welding line interval, the welding quality is always excellent. . And since this auxiliary cart 6 moves by meshing with the racks 1 and 2 and the gear 3, it moves following the movement of the backing carts 4 and 5, and no special driving means is required. . For this reason, the auxiliary cart 6 can be reduced in size, and the provision of the auxiliary cart 6 does not increase the minimum approach distance of the backing devices 4 and 5. For this reason, it is possible to simultaneously weld a plurality of weld lines in a wide range of panels from a panel having a small weld line interval to a large panel.

It is a typical top view explaining the principle of the present invention, (a) is a figure showing a mutual relation between a rack and a gear, and (b) is a figure showing a mutual relation between a backing truck and an auxiliary truck. It is a front view showing one side welding equipment of embodiments of the present invention, showing a case where close (a) if the backing carriage are spaced away from each other, (b) the mutual backing carriage . Similarly, it is a top view of the auxiliary carriage of the single-sided welding apparatus of the embodiment of the present invention. Similarly, it is a top view which shows the rack and gear part of the auxiliary trolley | bogie of the single-sided welding apparatus of embodiment of this invention.

Explanation of symbols

1: 2, rack 3: gear 4, 5: backing cart 6: auxiliary cart 10: cart body 11, 12, 52, 53: wheel 13, 56, 57: roller 14: frame 15: support 16: gear support 17: rail 50: backing cart 51: cart body 54: flux backing member 55: copper plate backing member 59: magnet suction device

Claims (2)

A pair of backing carriage having a carriage body which runs parallel to arranged respectively opposite directions to each other, and auxiliary carriages disposed between the pair of backing the truck is mounted on said respective backing truck had backing and those members, the prior SL auxiliary carriages, a plurality of carriage body and bogie body of auxiliary carriages extending parallel to the longitudinal direction of the auxiliary carriages traveling in the traveling direction in the same direction of the backing truck A frame that supports the main body of each of the auxiliary carts, a support unit that is installed on the frame and supports the panel, and two frames that are rotatably supported at two positions spaced apart in the longitudinal direction of the frame. And a pair of racks that are provided in a pair for each gear and that mesh with the corresponding gears in the traveling direction of the bogie body of the backing carriage, and that are engaged with the gear body of the backing carriage and the auxiliary The bogie body of the bogie means the backing bogie and auxiliary cart The pair of racks provided for the respective gears are provided at positions shifted from each other in the longitudinal direction and do not interfere with each other, and one of the pair of racks is provided on one of the pair of backing carriages. The other side of the pair of backing carriages is fixed so as to be perpendicular to the longitudinal direction, and the gear and the rack are fixed to the back side of the pair of backing carts. When the truck travels, the auxiliary carriage is positioned at a central position between the backing trucks, and the racks have portions opposite to the side fixed to the backing truck. A single-side welding apparatus configured so as not to interfere with the approach between the auxiliary carriage and the backing carriage by entering under the other backing carriage forming a pair. The single-sided welding apparatus according to claim 1, further comprising a pressing roller provided on the carriage main body and restraining a back portion of the rack.

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