JP5086758B2 - Backing device and single-side welding device - Google Patents

Description

  The present invention relates to a backing device that presses a flux against the back side of a groove line that abuts a member to be welded, and a single-side welding device provided with the backing device in single-sided welding of a member to be welded such as a metal plate. .

  Conventionally, as a backing device and a single-side welding device including the backing device, for example, Patent Document 1 describes a device having the following configuration. 7 is a perspective view showing a configuration of a conventional single-side welding apparatus (members to be welded are not shown), and FIG. 8 is a diagram showing a configuration of a conventional backing device and single-side welding apparatus (not shown in a welding machine). FIG. 9 is a sectional view of FIG.

  As shown in FIG. 7, the single-sided welding device 100 includes a plurality of rails 107 arranged in parallel in the longitudinal direction of the single-sided welding device 100 at a predetermined interval, and a base having a concave shape in cross section disposed above the rails 107. The frame 104, the backing device 50 installed inside the base frame 104, and the panel moving roller 105a (auxiliary roller 106) that is disposed above the base frame 104 and conveys the member E to be welded above the backing device 50. And a welding machine 60 that is movable along the longitudinal direction of the backing device 50 above the backing device 50.

  As shown in FIG. 8, the backing device 50 includes a flux copper backing first backing portion 51a and a flux backing second back that presses the flux against the back side of the groove line M where the members to be welded E and E are abutted. The abutting portion 51b, a horizontally movable backing frame 54 on which the first backing portion 51a and the second backing portion 51b are mounted, and a pedestal frame 55 arranged immediately below the backing frame 54 are provided. Further, in the gantry frame 55, a first backing portion flux collecting means 56 for collecting the flux dropped from the first backing portion 51a and a second flux for collecting the flux dropped from the second backing portion 51b. A backing portion flux collecting means 57 is provided. Further, the backing device 50 includes a flux supply hopper 59 (see FIG. 7) that can move along the longitudinal direction of the backing device 50.

  The first backing portion 51 a includes a copper plate 52 a that holds the flux and two first air hoses 53 a and 53 a that raise and lower the copper plate 52 a relative to the backing frame 54. The second backing portion 51b includes a bowl-shaped flux container 52b that holds the flux, and two second air hoses 53b and 53b that raise and lower the flux container 52b relative to the backing frame 54.

As shown in FIGS. 7 to 9, in the single-side welding apparatus 100 having such a configuration, the backing frame 54 is moved on the gantry frame 55 using the backing roller 58 provided on the backing frame 54. By doing so, the position of the first backing portion 51a or the second backing portion 51b is adjusted, and the first backing portion 51a or the second backing portion 51b is disposed immediately below the groove line M. Then, the flux supply hopper 59 is moved in the longitudinal direction to supply the flux onto the copper plate 52a or the flux container 52b. Thereafter, air is introduced into the first air hoses 53a, 53a or the second air hoses 53b, 53b to expand them, thereby pressing the copper plate 52a or the flux container 52b against the groove line M side, and the back side of the groove line M. In a state where the flux is in contact with the welding line, welding is performed by the welding machine 60 from the front side of the groove line M.
Japanese Patent Laying-Open No. 2005-319512 (Claim 1, FIG. 1)

  As shown in FIG. 8, in the conventional backing device 50, in order to stabilize the pressing of the flux to the back side of the groove line M, in the first backing portion 51a (second backing portion 51b), By expanding the two air hoses, the copper plate 52a (flux container 52b) is pushed up while maintaining a horizontal state. However, since the expansion of the air hose is adjusted by the introduced air pressure, there is a problem that it is difficult to accurately adjust the air pressure of the two air hoses so that the horizontal state can be maintained.

  In the backing device 50, since each of the first backing portion 51a and the second backing portion 51b includes two first air hoses 53a and second air hoses 53b, the width of each backing portion is When the two are widened, the width becomes even wider. As a result, the distance L3 between the first backing portion 51a and the second backing portion 51b is increased, and the overall width of the backing device is increased. Therefore, the width of the weld line formed above the two backing portions cannot be reduced during welding.

  In the backing device 50, since the distance L3 is long, the magnet device 105b including the auxiliary rollers 106 provided on both longitudinal sides of the first backing portion 51a and the second backing portion 51b and the auxiliary roller 106 are provided. In some cases, the distance between the panel moving roller 105a provided and the welded member E cannot be transported. That is, between the magnet device 105b and the panel moving roller 105a, the welded member E hangs down due to its own weight, collides with the first backing portion 51a and the second backing portion 51b, or gets over the panel moving roller 105a. There was a case that could not be done. In order to enable conveyance of the welded member E, in the backing device 50, a magnet device 105b or an auxiliary roller (not shown) is provided between the first backing portion 51a and the second backing portion 51b. It was necessary.

  Furthermore, in the backing device 50, since the distance L3 is long, in order to collect the used flux dropped from two side-by-side backing portions (first backing portion 51a, second backing portion 51b), Two flux collecting means (first backing part flux collecting means 56 and second backing part flux collecting means 57) are required inside the frame 55 located below each backing part.

  Therefore, in the backing device 50, the width of the entire backing device is increased, and two flux collecting means and the magnet device 105b or the auxiliary roller 106 as the conveying means for the member E to be welded are required. There was a problem that it was likely to be expensive.

  As shown in FIGS. 7 to 9, in the conventional single-side welding apparatus 100, in order to perform the welding by switching the backing method of the backing device 50, it is fixed at a position above the first backing portion 51 a. It is necessary to move the welding machine 60 (welding torch 63) to a position above the second backing portion 51b by a distance L3.

  On the other hand, the welding machine 60 is mounted on a traveling carriage 61 that travels a welding machine beam 101 extending along the longitudinal direction of the first backing part 51a and the second backing part 51b, and is movably attached to the traveling carriage 61. The adjustment jig 62 and a welding torch 63 attached to the adjustment jig 62 are provided.

  Then, the bearing 62 a provided on the adjustment jig 62 moves on the rail 61 a provided on the traveling carriage 61 of the welding machine 60, so that the adjustment jig 62 moves in the width direction and is attached to the adjustment jig 62. The welding torch 63 moves by a distance L4. In the welding machine 60, the distance L4 is determined by the length of the rail 61a on which the bearing 62a moves. If the rail 61a is too long, the rail 61a and the welding wire W supplied to the welding torch 63 interfere with each other, so that the distance L4 cannot be set long.

  In the single-sided welding apparatus 100, since the distance L3 is longer than the distance L4, the movement of the welding machine 60 (welding torch 63) from the first backing part 51a to the second backing part 51b is adjusted by the welding machine 60. It cannot be adjusted only by moving the jig 62. Therefore, in the single-sided welding apparatus 100, the welding machine beam 101 is moved along the beam traveling guide 103 using the beam traveling mechanism 102, whereby the welding machine 60 (welding torch 63) is moved from the first backing part 51a to the first one. 2 Move and adjust to the backing portion 51b.

  Therefore, the single-sided welding apparatus 100 requires the beam traveling mechanism 102 and the beam traveling guide 103 in addition to the welder beam 101, and the beam traveling guide 103 withstands the movement of the welder beam 101 (welder 60). Rigidity is required. Therefore, there existed a problem that the single-sided welding apparatus as a whole was increased in size and the equipment cost was likely to be expensive. Further, the installation of the beam traveling guide 103 and the enlargement of the entire single-sided welding apparatus also take away the effective area of the factory.

  Therefore, the present invention was devised to solve such a problem, and its purpose is to easily press the flux against the back side of the groove line where the member to be welded is abutted, and to a different backing system. Even if two corresponding backing portions are provided, the entire backing device is not increased in size, and a backing device having a low equipment cost is provided. Moreover, also in the single-sided welding apparatus provided with the said backing apparatus, it is providing the single-sided welding apparatus with a low equipment cost, without enlarging the whole single-sided welding apparatus.

In order to solve the above-mentioned problem, a backing device according to claim 1 is configured to be capable of horizontally moving a backing portion that presses a flux against a back side of a groove line that abuts a member to be welded, and a backing portion that mounts the backing portion. A backing frame; a pedestal frame on which the backing frame is mounted and disposed immediately below the backing frame; and a flux collecting means that is disposed on the pedestal frame and collects the flux dropped from the backing portion. A backing device, wherein the backing frame is connected between a top plate extending along a longitudinal direction of the backing portion, a side plate standing on both sides in the width direction of the top plate, and both side plates. The backing plate is disposed between the support plate and the top plate, the flux holding unit holding the flux, the support plate supporting the flux holding unit, and the flux holding unit. Part back And a lifting guide having lifting guide members disposed at predetermined intervals in the longitudinal direction of the air hose on both sides in the width direction of the air hose. One end portion of each elevating guide member is fixed to the support plate, and each elevating guide member is formed so as to be guided along the side plate through a guide hole formed in the top plate. Each lifting guide member is guided by the guide hole and the side plate on both sides in the width direction of the air hose by the expansion or contraction of the air hose, and slides to the same height in the width direction. Is raised and lowered in a horizontal state in the width direction .

According to the said structure, when a backing part is provided with the raising / lowering guide which has an raising / lowering guide member, when raising a flux holding | maintenance part to a groove side by expansion | swelling of one air hose, with expansion | swelling of an air hose The elevating guide member slides to the same height on both sides in the width direction of the air hose. Therefore, the inclination of a flux holding part is prevented and a horizontal state can be maintained.

A backing device according to claim 2 is provided with a first backing portion and a second backing portion that press the flux against the back side of a groove line that abuts a member to be welded, and a horizontal movement that mounts the first backing portion. A first back frame that can be moved, a second back frame that can move horizontally, on which the second back portion is mounted, the first back frame and the second back frame, and the first back frame. A frame that is disposed immediately below the frame and the second backing frame; and one flux collecting means that is disposed on the frame and collects the flux dropped from the first backing portion and the second backing portion. The first backing frame includes a first top plate extending along the longitudinal direction of the first backing portion, and standing on both sides in the width direction of the first top plate. First side plate provided and a first bottom connected between both first side plates The first backing part is disposed between the copper plate for holding the flux, the first support plate for supporting the copper plate, the first support plate and the first top plate, and the copper plate. A first air hose that moves up and down relative to the first backing frame, and a first air hose disposed at predetermined intervals in the longitudinal direction of the first air hose on both sides in the width direction of the first air hose. A first elevating guide having an elevating guide member, wherein one end of each first elevating guide member is fixed to the first support plate, and each first elevating guide member is provided with the first elevating guide member. The first guide hole formed in the top plate is inserted and guided along the first side plate, and each first elevating guide member is expanded or contracted by the first air hose, on both sides in the width direction of the first air hose, the first Is guided by the wellbore and the first side plate, and slide at the same height in the width direction, the raised and lowered in a horizontal state in the first support plate width direction, the second backing frame, said second Urato A second top plate extending along the longitudinal direction of the portion, a second side plate erected on both sides in the width direction of the second top plate, and a second bottom plate connected between the second side plates. The second backing portion is disposed between a flux container for holding flux, a second support plate for supporting the flux container, the second support plate and the second top plate, and the flux One second air hose that moves the container up and down relative to the second backing frame, and a second air hose disposed at predetermined intervals in the longitudinal direction of the second air hose on both sides in the width direction of the second air hose. A second lifting guide having two lifting guide members, and a front In the second elevating guide, one end of each second elevating guide member is fixed to the second support plate, and each second elevating guide member is inserted through a second guide hole formed in the second top plate. The second elevating guide member is formed on both sides in the width direction of the second air hose due to expansion or contraction of the second air hose. The second guide plate is guided by the second guide hole and the second side plate and slides to the same height in the width direction, and the second support plate is moved up and down in a horizontal state in the width direction .

  According to the above configuration, the first backing portion and the second backing portion include the first lifting guide having the first lifting guide member and the second lifting guide having the second lifting guide member. When the copper plate or the flux container is raised to the groove side by the expansion of the first or second air hose of the book, the first lifting guide member or the second guide member is moved along with the expansion of the first or second air hose. Slide to the same height on both sides in the width direction of the first air hose or the second air hose. Therefore, the inclination of the copper plate or the flux container is prevented and the horizontal state can be maintained.

  Further, by providing one flux collecting means for collecting the flux dropped from the first backing part or the second backing part, two flux collecting means corresponding to the first backing part and the second backing part. Compared to a conventional backing device having a magnet device or a support roller between the first backing portion and the second backing portion, the gap between the first backing portion and the second backing portion The distance can be reduced, and a magnet device or a support roller for supporting the member to be welded is also unnecessary.

  According to a third aspect of the present invention, there is provided a backing device comprising a connecting portion for connecting the first backing frame and the second backing frame.

  According to the above configuration, by providing the connecting portion that connects the first backing frame and the second backing frame, the rigidity in the width direction of the first and second backing frames is increased, and the gaps at both ends of the groove line are increased. In this position, the backing frame is prevented from being deformed like a bow, and the centering accuracy of the welder is improved. Further, the used flux that drops from the first backing portion and the second backing portion accumulates between the first backing portion and the second backing portion, and does not reach the flux collecting means. In order to prevent this, it has a function of providing a predetermined interval (space portion) between the first backing portion and the second backing portion.

  The backing device according to a fourth aspect includes a first flux supplying means for supplying a flux to the copper plate and a second flux supplying means for supplying a flux to the flux container.

  According to the said structure, a flux can be uniformly supplied over the longitudinal direction to the copper plate or flux container arrange | positioned in a different height by providing a 1st and 2nd flux supply means.

  A single-side welding apparatus according to a fifth aspect of the present invention is provided to support the backing apparatus according to any one of the first to fourth aspects and the backing apparatus, and extend in a longitudinal direction of the backing apparatus. A base frame, a conveying means disposed above the base frame, for horizontally moving the welded member above the backing device, and fixed above the backing device, from the front side of the groove line And a welding machine for welding the welding member.

  According to the said structure, the horizontal state of the flux holding | maintenance part of a backing device can be maintained by providing the backing device as described in any one of Claim 1 thru | or 4. Further, even when two types of backing parts are provided, the distance between the backing parts can be reduced, and a magnet device or a panel moving roller for conveying a member to be welded between the backing parts becomes unnecessary. Furthermore, since the distance between the backing parts can be reduced, the welding machine (welding torch) between the backing parts can be moved by adjusting the movement of the adjusting jig to which the welding torch is attached. The beam traveling mechanism and the beam traveling guide used for moving the welder beam are not required.

  According to the backing device according to the present invention, it is easy to press the flux to the back side of the groove line that abuts the member to be welded, and two backing portions corresponding to different backing methods are provided. The entire backing device is not enlarged, and the equipment cost is low. In addition, according to the single-sided welding device according to the present invention, in addition to the welded state at the groove line being excellent, the single-sided welding device as a whole is not enlarged, and the equipment cost is low, Installation space is also minimized.

  DESCRIPTION OF EMBODIMENTS Embodiments of a backing device and a single-side welding device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing the configuration of a backing device and a single-sided welding device (a welding machine is not shown), FIG. 2 is another embodiment of the backing device, and a single-sided welding device (a welding machine is not shown). FIGS. 3A and 3B are schematic views showing a lifting mechanism of a copper plate or a flux container of a backing device, and FIG. 3A is a diagram illustrating that a copper plate or a flux container is pushed against a member to be welded. FIG. 4 shows a state before hitting, (b) shows a state in which a copper plate or a flux container is pressed against a member to be welded, FIG. 4 is a perspective view showing a configuration of a single-side welding apparatus (a member to be welded is not shown), FIG. 5 is a cross-sectional view of FIG. 4, and FIG. 6 is a cross-sectional view showing the configuration of another embodiment of a backing device and a single-sided welding device (a welding machine is not shown). In the description of the embodiment, the longitudinal direction is a direction parallel to the groove line of the member to be welded, and the width direction is a direction orthogonal to the groove line.

First, a first embodiment of a backing device according to the present invention will be described.
As shown in FIG. 1, a backing device 10 is a device that presses a flux against the back side of a groove line M that a welded member E having a length of, for example, 20 to 30 m on one side is abutted. It is installed in a single-sided welding apparatus 1 that performs arc welding.

  The backing device 10 includes a backing portion 11, a backing frame 17, a gantry frame 21, and flux collecting means 22. Each configuration will be described below.

  The backing portion 11 is a portion that presses the flux against the back side of the groove line M with which the member to be welded E is abutted. 3 (a) and 3 (b) show the backing portion 11 (the first backing portion 11a and the second backing portion 11b) having the same configuration, and will be described with reference as appropriate. In addition, in the backing device 10 of 1st Embodiment, either one of the 1st backing part 11a and the 2nd backing part 11b is provided. The backing portion 11 includes a flux holding portion 12, a support plate 15, a single air hose 13, and a lifting guide 14.

  The flux holding part 12 is a copper plate formed in the longitudinal direction, and holds the flux supplied from the first flux supply means 26a (see FIG. 4) of the single-side welding apparatus 1 on the upper surface thereof. And when the plate | board thickness of the to-be-welded member E is comparatively thick and there is no mistake, the copper plate 12a is used as the flux holding | maintenance part 12, and it is called a flux copper backing type. Moreover, when the plate | board thickness of the to-be-welded member E is comparatively thin, and there is a difference or a plate | board thickness difference, the bowl-shaped flux container 12b is used as the flux holding | maintenance part 12, and it is called a flux backing type.

  The support plate 15 is a long plate formed in the longitudinal direction, and is disposed on the upper portion of the backing frame 17 to support the flux holding unit 12. Moreover, you may use the support auxiliary | assistant board 16 which assists the support with the support plate 15 in order to support the flux holding | maintenance part 12 (refer the 1st backing part 11a of Fig.3 (a), (b)). . A plurality of auxiliary support plates 16 are provided upright from the support plate 15 and are provided at predetermined intervals in the longitudinal direction.

  The air hose 13 is disposed between the support plate 15 that supports the flux holding portion 12 and the backing frame 17. The air hose 13 moves the flux holding portion 12 up and down relative to the backing frame 17 by expansion or contraction. Moreover, like the 2nd backing part 11b of FIG. 3 (a), (b), the 2nd air hose 13c is arrange | positioned directly under the flux container 12b (flux holding | maintenance part 12), and 2nd air hose 13c By expansion, the flux stored in the flux container 12b (flux holding portion 12) may be raised and pressed against the groove line M of the member E to be welded.

The elevating guides 14 are arranged on both sides in the width direction of the air hose 13 arranged at the upper part of the backing frame 17, and have a plurality of elevating guide members 14 arranged at predetermined intervals in the longitudinal direction of the air hose 13. The elevating guide member 14 has one end portion fixed to the support plate 15 that supports the flux holding portion 12, and is inserted through a guide hole 27 formed in the top plate 20 of the backing frame 17. It is formed so as to be guided along the side plate 19 of the frame 17.
The lifting guide member 14 is guided by the guide hole 27 and the side plate 19 of the backing frame 17 on both sides of the air hose 13 by the expansion or contraction of the air hose 13, and slides to the same height. Is moved up and down in a horizontal state, the inclination of the flux holding portion 12 is prevented, and the horizontal state is maintained.

  The elevating guide member 14 is made of, for example, a rod-like member, and has a length sufficient to slide and bring the flux held by the flux holding portion 12 into contact with the back side of the groove line M. . The elevating guide member 14 may have a stopper 14c having a diameter larger than that of the guide hole 27 (second guide hole 27b) at the other end (the second elevating guide member shown in FIGS. 3A and 3B). 14b).

  The backing frame 17 is a frame on which the backing portion 11 is mounted, and a top plate 20 extending along the longitudinal direction of the backing portion 11 and standing on both sides in the width direction of the top plate 20. And a bottom plate 18 connected between the side plates 19 and 19. Further, the bottom plate 18 is supported by a backing roller portion 21 a disposed on the top of the gantry frame 21, and when the elevating guide member 14 has a stopper 14 c, the stopper 14 c comes into contact with the bottom plate 18. Therefore, the bottom plate 18 does not need to be provided over the entire length in the longitudinal direction. The bottom plate 18 is supported by the backing roller portion 21a. When the elevating guide member 14 has the stopper 14c, the stopper 14c also abuts. It is sufficient to have a length of. The top plate 20 extends over the entire length in the longitudinal direction of the backing portion 11, an air hose 13 is disposed on the top plate, and guide holes for guiding the lifting guide member 14 on both sides in the width direction of the air hose 13. 27 is formed. Further, the side plates 19, 19 guide the slide of the lifting guide member 14. The backing frame 17 is horizontally moved in the width direction on the backing roller portion 21a by a driving mechanism (not shown) having an engaging portion that engages with the bottom plate 18.

  The gantry frame 21 is a frame that is disposed directly below the backing frame 17 and that moves up and down in the vertical direction. The frame 21 is supported by the lifting means 23 and a backing roller portion 21a is disposed at the top. The gantry frame 21 is formed in a substantially box shape by joining square members and plate members, and includes a lower frame 21b extending in the width direction, and side frames 21c formed in a ladder shape at both ends of the lower frame 21b. 21c and a pair of sandwiching plates 21d, 21d interposed between the side frames 21c, 21c. The pair of sandwiching plates 21d and 21d are spaced apart from each other at a predetermined interval in the longitudinal direction to sandwich the backing roller portion 21a, and the upper end of the lifting / lowering means 23 is abutted and supported at the lower end. Further, a plurality of the pair of sandwiching plates 21d and 21d are arranged in parallel at a predetermined interval over the entire length of the side frame 21c. Further, the lifting / lowering means 23 is inserted into the lower frame 21b.

  The flux collecting means 22 is arranged inside the gantry frame 21 and collects the used flux scraped off after welding the groove line M. The flux collecting means 22 includes a tapered portion 22a that expands above the gantry frame 21 and a screw-like conveyor portion 22b that discharges the collected flux to the outside.

Next, a second embodiment of the backing device according to the present invention will be described.
As shown in FIGS. 2, 3A, and 3B, the backing device 10A includes a first backing portion 11a and a second backing portion 11b, a first backing frame 17a, and a second backing portion. A frame 17b, a gantry frame 21, and one flux collecting means 22 are provided. Here, each of the first backing portion 11a and the second backing portion 11b includes one air hose (the first air hose 13a and the second air hose 13b), whereby each backing portion 11a, The width of 11b becomes narrow and the distance L1 between the 1st backing part 11a and the 2nd backing part 11b can be set narrowly. That is, the distance L1 is set between the first backing portion 51a and the second backing portion 51b in the conventional backing device 50 including two air hoses (the first air hose 53a and the second air hose 53b). It can be set narrower than the distance L3 (see FIG. 8).

  Further, the backing device 10A includes a first backing portion 11a, a copper plate 12a, a first support plate 15a, a single first air hose 13a, and a first lifting guide (first lifting guide member) 14a. The second backing portion 11b includes a flux container 12b, a second support plate 15b, one second air hose 13b, and a second lifting guide (second lifting guide member) 14b.

Hereinafter, each configuration of the backing device 10A will be described.
Here, since the gantry frame 21 and the flux collecting means 22 of the backing device 10A are the same as those in the first embodiment, the description thereof is omitted.
Further, the first backing frame 17a (the first bottom plate 18a, the first side plate 19a, the first top plate 20a, the first guide hole 27a) and the second backing frame 17b (the second bottom plate 18b, the second backing plate) of the backing device 10A. Since the two side plates 19b, the second top plate 20b, and the second guide holes 27b) are the same as the backing frame 17 (the bottom plate 18, the side plates 19, the top plate 20, and the guide holes 27) of the first embodiment, the description will be made. Omitted.

The first backing portion 11a and the second backing portion 11b of the backing device 10A correspond to the backing portion 11 of the first embodiment (the backing device 10).
And the copper plate 12a, the 1st support plate 15a, the 1st air hose 13a, and the 1st raising / lowering guide (1st raising / lowering guide member) 14a in the 1st backing part 11a are the flux of 1st Embodiment (backing apparatus 10). It corresponds to the holding part 12, the support plate 15, the air hose 13, and the lifting guide (lifting guide member) 14.
Similarly, the flux container 12b, the second support plate 15b, the second air hose 13b, and the second lifting guide (second lifting guide member) 14b in the second backing portion 11b are the same as those in the first embodiment (the backing device 10). Correspond to the flux holding portion 12, the support plate 15, the air hose 13, and the lifting guide (lifting guide member) 14.
Accordingly, the first backing portion 11a and the second backing portion 11b are also the same as those in the first embodiment, and thus description thereof is omitted.

  In the backing device 10A, the backing frame 17 includes a first backing frame 17a on which the first backing portion 11a is mounted and a second backing frame 17b on which the second backing portion 11b is mounted. A connecting portion 24 that connects the first backing frame 17a and the second backing frame 17b may be provided.

  The connection part 24 will not be specifically limited if the rigidity of the width direction of the 1st backing frame 17a and the 2nd backing frame 17b is improved. Moreover, it is preferable that the connection part 24 is provided with two or more at predetermined intervals over the longitudinal direction, ie, it is provided with two or more space parts 25. FIG. By providing the space portion 25, it is possible to prevent the used flux scraped off from the first backing portion 11 a and the second backing portion 11 b from collecting in the connecting portion 24.

  As shown in FIG. 4, the backing device 10 </ b> A includes a first flux supply unit 26 a that supplies a flux to the copper plate 12 a (see FIG. 3A), and a flux container 12 b (see FIG. 3A). There may be provided second flux supply means 26b for supplying. The first flux supply means 26a and the second flux supply means 26b are, for example, hoppers, and the shapes thereof are not particularly limited as long as the flux can be supplied.

Next, the single-side welding apparatus according to the present invention will be described.
As shown in FIGS. 2, 4, and 5, the single-sided welding device 1 includes a backing device 10 </ b> A, a base frame 104, a conveying unit 105, and a welding machine 30. Further, instead of the backing device 10A having two types of backing portions (the first backing portion 11a and the second backing portion 11b), the backing device 10 having one kind of backing portion 11 is used. May be. Each configuration will be described below. Since the backing devices 10 and 10A are as described above, description thereof is omitted.

  The base frame 104 is formed so as to have a concave shape in cross-section, with a steel square frame, and the upper side is opened and the backing device 10A is supported inside, along the longitudinal direction of the backing device 10A. This is an extended frame. The base frame 104 is provided with two main beams 104a arranged side by side along the longitudinal direction, a connection beam 104b connected at a right angle between the main beams 104a and 104a, and a vertical installation on the connection beam 104b. A connecting beam 104c, auxiliary beams 104d and 104d installed in parallel above the main beams 104a and 104a, and a cantilever beam 104e protruding from the auxiliary beams 104d and 104d toward the opposite side of the backing device 10A, respectively. Is provided. Further, the base frame 104 is provided with a rotary carriage section 108 below the connecting beam 104b, and the rotary carriage section 108 is placed on a plurality of rails 107 arranged in parallel at predetermined intervals in the longitudinal direction of the single-side welding apparatus 1. Moves in the width direction by moving.

  The conveying means 105 is disposed on the upper portion (auxiliary beam 104d) of the base frame 104 and horizontally moves the member to be welded E above the backing device 10A, and is composed of a panel moving roller 105a, a magnet device 105b, and the like. . Further, in order to assist the conveyance of the welded member E by the conveyance means 105, an auxiliary roller 106 is disposed on the upper portion (cantilever 104e) of the base frame 104.

  The welding machine 30 is fixed above the backing device 10A and welds the member E to be welded from the front side of the groove line M. The welding machine 30 moves to a traveling carriage 31 that travels a welding machine beam 101 that extends along the longitudinal direction of the first backing section 11a and the second backing section 11b of the backing apparatus 10A, and the traveling carriage 31. An adjustment jig 32 that can be attached to the adjustment jig 32 and a welding torch 33 attached to the adjustment jig 32 are provided.

  Then, the bearing 31 a is fixed to the traveling carriage 31, and the adjustment jig 32 moves in the width direction by moving the rail 32 a provided in the adjustment jig 32 via the fixed bearing 31 a, and is attached to the adjustment jig 32. The welding torch 33 is moved by a distance L2. In the welding machine 30, the bearing 31a is fixed, and the adjustment jig 32 (welding torch 33) moves in the width direction together with the rail 32a via the bearing 31a. Therefore, since the rail 32a and the welding wire W supplied to the welding torch 33 do not interfere with each other, the distance L2 can be set longer than the distance L4 shown in FIG.

  Next, operations of the backing device and the single-side welding device will be described with reference to FIGS. As the backing device, a backing device 10A having two types of backing portions (first backing portion 11a and second backing portion 11b) will be described as an example.

(1) Flux is supplied from the first flux supply means 26a to the first backing portion 11a (copper plate 12a). Then, the temporarily welded members E and E are moved by the panel moving roller 105a and the auxiliary roller 106, and the groove line M formed by the welded members E and E is disposed above the backing device 10A. . Then, a drive device (not shown) is operated to perform fine adjustment in the width direction of the first backing portion 11a so that the copper plate 12a is positioned immediately below the groove line M.

  Specifically, the first backing frame 17a on which the first backing portion 11a is mounted is placed on the backing roller portion 21a disposed on the upper portion of the gantry frame 21 disposed immediately below the first backing frame. Move horizontally in the width direction.

(2) When the fine adjustment in the width direction is completed, the magnet device 105b is activated, and the member to be welded E is attracted downward and fixed by magnetism.

(3) Air is introduced into the first air hose 13a, and the first air hose 13a is expanded. Due to the expansion of the first air hose 13a, the first elevating guide (first elevating guide member) 14a is moved to the first guide hole 27a and the first side plate 19a of the first backing frame 17a on both sides of the first air hose 13a. It slides in the guided state and pushes up the first support plate 15a fixed to one end of the first elevating guide member 14a.

  By pushing up the first support plate 15a, the copper plate 12a supported by the first support plate 15a (support auxiliary plate 16) comes into contact with the back side of the groove line M, and the flux is pressed against the back side of the groove line M. Then, while moving the welding machine 30 on the welding machine beam 101 at a predetermined speed, one-sided submerged arc welding is performed from the front side of the groove line M by the welding torch 33 to weld the members to be welded E and E.

(4) Next, when there are a plurality of groove lines M, the air in the first air hose 13a is discharged, and the first elevating guide (first elevating guide member) 14a and the first support plate 15a are lowered. Then, the copper plate 12a is pushed down from the back side of the member E to be welded, and the gantry frame 21 is lowered by the lifting means 23, and the first backing portion 11a is further pushed down from the back side of the member to be welded E. Then, similarly to the above (1), the flux is supplied to the copper plate 12a, and fine adjustment is performed so that the copper plate 12a is positioned immediately below the next groove line M, and the above (2) to (3) are performed. Such an operation is performed until the groove line M disappears.

  Further, when switching the backing method from the flux copper backing type to the flux backing type, the rail 32a of the adjustment jig 32 is moved in the width direction via the bearing 31a of the traveling carriage 31 of the welding machine 30, thereby The welding torch 33 is moved from the top of the first backing portion 11a (copper plate 12a) to the second backing portion (flux container 12b). And it welds according to said (1)-(4). The second flux supplying means 26b as the flux collecting means, the second backing part 11b as the backing part (flux container 12b, second support plate 15b, second air hose 13b, second lifting guide (second lifting guide member). 14b) The second backing frame 17b is used as the backing frame.

3A and 3B, the flux container 12b is pushed up in the following two stages and comes into contact with the back side of the groove line M.
First, air is introduced into the second air hose 13b disposed on the second backing frame 17b (second top plate 20b), and the second air hose 13b is expanded. Along with the expansion of the second air hose 13b, the second elevating guide member 14b slides while being guided by the second guide hole 27b and the second side plate 19b of the second backing frame 17b, and the flux container 12b is predetermined. It pushes up to the height (the height at which the flux container 12b is in contact with the member E to be welded). The expansion of the second air hose 13b (sliding of the second elevating guide member 14b) is such that the stopper 14c provided at the other end of the second elevating guide member 14b contacts the lower part of the second backing frame 17b. (Up of the first stage).
Next, air is introduced into the second air hose 13c disposed below the flux container 12b, and the second air hose 13c is expanded. Due to the expansion of the second air hose 13c, the flux in the flux container 12b is pressed against the member E to be welded (second stage push-up).

  Thus, the reason why the backing method can be switched by adjusting the movement of the welding torch 33 is that the distance between the first backing portion 11a and the second backing portion 11b in the backing device 10A. This is because L1 can be set narrower than the distance L2 in which the position of the welding torch 33 can be adjusted. The reason why the distance L1 can be set narrowly is that air hoses (first air hose 13a and second air hose 13b) built in the first backing portion 11a (copper plate 12a) and the second backing portion 11b (flux container 12b) are used. ) Is composed of one.

  As shown in FIG. 8, the conventional backing device 50 includes a wide first backing portion 51a and second backing member each incorporating two air hoses (first air hose 53a and second air hose 53b). This section 51b is provided. Therefore, the distance L3 between the first backing portion 51a and the second backing portion 51b cannot be set narrower than the distance L2 (see FIG. 5) where the position of the welding torch can be adjusted.

  The embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.

For example, the above-described backing device and single-sided welding device have been described by taking as an example the case where the member to be welded flows in the width direction (direction orthogonal to the longitudinal direction of the backing device). However, as shown in FIG. 6, even when the member to be welded E flows in the longitudinal direction, the backing device 10, 10A (see FIGS. 1 and 2) and the single-side welding device 1 (FIG. 4, FIG. 5) and a single-side welding apparatus 1A (the welding machine is not shown) can be used. For example, the backing device 10B includes a first backing portion 11a and a second backing portion 11b, a first backing frame 17a, a second backing frame 17b, a pedestal frame 21, and flux collecting means 22. And a connecting portion 24 is further provided. The single-sided welding device 1A includes a backing device 10B, a base frame 104, a conveying means 105, and a welding machine (not shown). In addition, in FIG. 6, about the structure same as backing device 10, 10A and the single-sided welding apparatus 1, the same code | symbol was attached | subjected. And in the backing device 10B, the raising / lowering means 23 (refer FIG. 1, FIG. 2) which raises / lowers the mount frame 21 is unnecessary.
Moreover, although the raising / lowering guide member 14 (1st raising / lowering guide member 14a, 2nd raising / lowering guide member 14b) was demonstrated as a rod-shaped member, the shape may be plate shape.

It is sectional drawing which shows the structure of the backing device which concerns on this invention, and a single-sided welding apparatus (a welding machine is not shown in figure). It is sectional drawing which shows other embodiment of the backing device which concerns on this invention, and the structure of the single-sided welding apparatus (a welding machine is not shown in figure). (A), (b) is the schematic which shows the raising / lowering mechanism of the copper plate or flux container of the backing apparatus which concerns on this invention, Comprising: (a) is the state before pressing a copper plate or a flux container to a to-be-welded member. (B) shows the state which pressed the copper plate or the flux container on the to-be-welded member. It is a perspective view (member to be welded is not shown) which shows the composition of the single side welding device concerning the present invention. FIG. 5 is a cross-sectional view of FIG. 4. It is sectional drawing which shows the structure of other embodiment of a backing device and a single-sided welding apparatus (a welding machine is not shown). It is a perspective view which shows the structure of the conventional single-sided welding apparatus (a member to be welded is not shown). It is sectional drawing which shows the structure of the conventional backing device and single-sided welding apparatus (a welding machine is not shown). It is sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Single-sided welding apparatus 10 Backing apparatus 11 Backing part 12 Flux holding part 13 Air hose 14 Lifting guide (lifting guide member)
DESCRIPTION OF SYMBOLS 15 Support plate 17 Backing frame 18 Bottom plate 19 Side plate 20 Top plate 21 Mounting frame 22 Flux collection means 27 Guide hole 30 Welding machine 104 Base frame 105 Conveying means

Claims (5)

A backing part that presses the flux against the back side of the groove line where the member to be welded is abutted, a horizontally movable backing frame that mounts the backing part, and a right underneath the backing frame that carries the backing frame A backing device comprising: a gantry frame arranged on the gantry frame; and a flux collecting means arranged on the gantry frame for collecting the flux dropped from the backing portion,
The backing frame includes a top plate extending along the longitudinal direction of the backing portion, a side plate standing on both sides in the width direction of the top plate, and a bottom plate connected between the side plates,
The backing portion is disposed between a flux holding portion that holds flux, a support plate that supports the flux holding portion, and the support plate and the top plate, and the flux holding portion is attached to the backing frame. A single air hose that moves up and down relative to each other, and a lifting guide having lifting guide members arranged at predetermined intervals in the longitudinal direction of the air hose on both sides in the width direction of the air hose,
The elevating guide is such that one end of each elevating guide member is fixed to the support plate, and each elevating guide member is guided along the side plate through a guide hole formed in the top plate. Formed into
Each lifting guide member is guided by the guide hole and the side plate on both sides in the width direction of the air hose by expansion or contraction of the air hose, and slides to the same height in the width direction. A backing device characterized by being raised and lowered in a horizontal state in the width direction . A first backing portion and a second backing portion that press the flux against the back side of the groove line with which the member to be welded is abutted; a horizontally movable first backing frame that mounts the first backing portion; 2 a horizontally movable second back frame that mounts the back portion, the first back frame and the second back frame, and immediately below the first back frame and the second back frame A backing device comprising: a gantry frame arranged on the gantry frame; and one flux collecting means arranged on the gantry frame for collecting the flux dropped from the first backing portion and the second backing portion,
The first backing frame includes a first top plate extending along a longitudinal direction of the first backing portion, a first side plate erected on both sides in the width direction of the first top plate, A first bottom plate connected between the first side plates,
The first backing portion is disposed between a copper plate that holds a flux, a first support plate that supports the copper plate, and between the first support plate and the first top plate, and the copper plate is the first support plate. One first air hose that moves up and down relative to the backing frame, and first elevating guide members that are arranged at predetermined intervals in the longitudinal direction of the first air hose on both sides in the width direction of the first air hose. A first elevating guide having
In the first elevating guide, one end of each first elevating guide member is fixed to the first support plate, and each first elevating guide member is inserted through a first guide hole formed in the first top plate. And formed to be guided along the first side plate,
Each first lifting guide member is guided by the first guide hole and the first side plate on both sides in the width direction of the first air hose by the expansion or contraction of the first air hose, and has the same height in the width direction. Slide up and down, raise and lower the first support plate in a horizontal state in the width direction ,
The second backing frame includes a second top plate extending along the longitudinal direction of the second backing portion, a second side plate erected on both sides in the width direction of the second top plate, A second bottom plate connected between the second side plates,
The second backing portion is disposed between a flux container for holding a flux, a second support plate for supporting the flux container, the second support plate and the second top plate, and the flux container One second air hose that moves up and down relative to the second backing frame, and a second lifting that is arranged at predetermined intervals in the longitudinal direction of the second air hose on both sides in the width direction of the second air hose. A second lifting guide having a guide member,
In the second elevating guide, one end of each second elevating guide member is fixed to the second support plate, and each second elevating guide member is inserted through a second guide hole formed in the second top plate. And formed to be guided along the second side plate,
Each second elevating guide member is guided by the second guide hole and the second side plate on both sides in the width direction of the second air hose by the expansion or contraction of the second air hose, and is the same in the width direction. A backing device that slides to a height and raises and lowers the second support plate in a horizontal state in the width direction .   The backing device according to claim 2, further comprising a connecting portion that connects the first backing frame and the second backing frame.   4. The backing device according to claim 2, further comprising: a first flux supply unit that supplies a flux to the copper plate; and a second flux supply unit that supplies a flux to the flux container. The backing device according to any one of claims 1 to 4,
A base frame that supports the backing device and extends in the longitudinal direction of the backing device;
A conveying means disposed above the foundation frame and horizontally moving the member to be welded above the backing device;
A single-side welding apparatus, comprising: a welding machine that is fixed above the backing apparatus and welds the welding member from the front side of the groove line.

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