JP2011183436A - Recovering and scattering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recovering and scattering device provided with a hopper, which has a large capacity for storing flux, conveys a large amount of flux and scatters the flux in a proper amount. <P>SOLUTION: The recovering and scattering device 50 is provided with a recovering and scattering carriage 51 on which the hopper 52 for storing the flux F is placed, scatters the flux F and recovers the used flux F. The hopper 52 is provided with: upper opening ports 52e, 52e' opening toward the upper side; lower opening ports 52f, 52f' formed on inner bottoms 52h, 52h' of the hopper 52; and opening and closing valves 57, 58 for opening and closing the lower opening ports 52f, 52f'. Lengths in the conveyance direction of the lower opening ports 52f, 52f' are formed in a length of at least 1/5 of the lengths in the conveyance direction of the upper opening ports 52e, 52e'. Areas S2 of inner bottoms 52h, 52h' are formed in a size of at least 20% of the areas S1 of the upper opening ports 52e, 52e'. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In the present invention, when performing single-sided automatic welding along the weld line of the temporarily welded material, the back-up flux pressed against the back surface of the weld line is supplied and the used flux generated by welding is recovered. The present invention relates to a collecting and spraying device.

  In general, steel plates used for ships and the like are formed by joining steel plates of a certain size by welding because they require a large steel plate area. In the single-sided welding equipment used for the welding work of the steel sheet, when welding the material to be welded (welded steel sheet) from one side by a welding machine, the welded material is welded to form a weld bead on the back surface of the steel sheet. Along the line, welding is performed while pressing the backing flux in the trough against the back surface of the steel sheet by the backing device.

  The backing flux, the underlay flux laid under the backing flux, and the used backing flux are generally composed mainly of a collection and spreading cart (cart) equipped with a hopper that stores these fluxes. Transport, supply, removal, and recovery are performed by the collected recovery device (see, for example, Patent Documents 1 and 2).

  The collection and distribution cart is located at the bottom of the panel line, and it is necessary to move along the welding line in the back space formed by the lifting device provided in the backing device descending. The size of the trolley is limited, and the overall size of the carriage is limited.

  As described in Patent Documents 1 and 2, the conventional hopper mounted on the collection and spreading cart is formed in a substantially inverted triangular shape that is reduced in diameter toward the lower side in front view and side view, The volume is reduced in a funnel shape from the upper opening to the lower opening. At the inner bottom of the hopper, a lower opening is formed to spread the flux. Thus, the hopper is an inverted quadrangular pyramid in which the inner wall surface of the storage portion is inclined from the upper opening to the inner bottom so that the flux stored in the hopper is smoothly supplied from the upper layer toward the lower layer. It is formed into a shape.

JP 2006-175447 A (paragraph [0058], FIG. 1, FIG. 3 and FIG. 4) Japanese Patent No. 3930793 (FIG. 3)

  However, in the collection and dispersion devices described in Patent Documents 1 and 2, since the outer dimensions of the height and width of the collection and distribution carriage are limited, the size of the entire hopper is also limited. For this reason, the storage capacity which can convey and spread a flux at a time with a collection spreader cart was also limited.

  The present invention has been devised in view of the problems, and the problem is that the storage capacity of the flux is large, and the recovery is provided with a hopper that can transport a large amount of flux at a time and spray it in an appropriate amount. It is to provide a spraying device.

  In order to solve the above-described problem, the recovery and spreading device according to claim 1 is provided with a hopper for storing a flux used for one-side welding along a welding line in which the workpieces are abutted to each other, and the welding A recovery and distribution carriage that moves along a line, and that disperses the flux and recovers the used flux, wherein the hopper includes an upper opening that opens upward; A lower opening formed at the bottom and an on-off valve that opens and closes the lower opening, and the length of the lower opening in the conveying direction is 1/5 of the length of the upper opening in the conveying direction It is formed in the above length, The area of the said inner bottom is formed in the magnitude | size of 20% or more of the area of the said upper opening opening, It is characterized by the above-mentioned.

  According to such a configuration, the hopper of the recovery and spreading device is wider than the ratio of the area of the inner bottom to the upper opening of the hopper that is generally used conventionally. The hopper formed in this way increases the storage capacity of the flux by increasing the area of the inner bottom while maintaining the height, length, and width of the entire hopper at the specified dimensions. It can be larger than the storage capacity of the hopper. Furthermore, the flux in the hopper can be used without waste by setting the length in the transport direction of the lower opening to 1/5 or more of the upper opening of the hopper.

  According to a second aspect of the present invention, there is provided a collecting and dispersing apparatus according to the first aspect, wherein the hopper has vertical inner walls on the front and rear sides in the conveying direction.

  According to this configuration, the hopper is formed in a rectangular shape when viewed from the side, because the front and rear inner walls on the conveyance direction side are vertical. For this reason, the volume in the hopper (flux storage capacity) is increased by the amount by which the front and rear inner walls are not inclined.

  The recovery and spray device according to claim 3 is the recovery and spray device according to claim 1 or claim 2, wherein the lower opening has a maximum opening area when the upper opening is maximized. It is characterized by being formed in 10% or more of the area.

  According to such a configuration, since the hopper has a lower opening having a size of 10% or more of the area of the upper opening on the inner bottom, the area of the inner bottom is more than the area of the lower opening. It will be formed vastly. For this reason, in the hopper, the storage capacity of the flux is larger than the storage capacity of the conventional hopper as the area of the inner bottom is formed wide.

  The recovery / spreading device according to claim 4 is the recovery / spreading device according to any one of claims 1 to 3, wherein the flux is pressed against the back side of the weld line of the workpiece. The hopper is composed of a backing flux and an underlay flux laid under the backing flux, and the hopper has a backing flux storage portion in which the backing flux is stored and the underlay in the hopper. A partition plate that divides into an underlay flux storage portion in which the flux is stored, and the opening and closing valves are respectively provided below the inner bottom of the hopper, and the lower opening is opened to open the backing flux or the It is characterized by spraying underlay flux.

  According to this configuration, the hopper of the recovery and spreading device has a wide bottom surface of the two storage portions, the backing flux storage portion for storing the backing flux and the underlay flux storage portion for storing the underlay flux. As a result, the volume of the two accommodating portions is also increased. For this reason, if a collection conveyance truck conveys a large amount of backing flux and underlay flux at a time and opens an on-off valve, each appropriate quantity of flux will be spread.

  The recovery and spray device according to claim 5 is the recovery and spray device according to any one of claims 1 to 4, wherein the on-off valve is slidable in a horizontal direction under the lower opening. And a flux outlet that discharges the flux is formed. It is sprayed from the spraying port.

  According to such a configuration, the recovery and spraying device sprays the underlay flux or the backing flux loaded on the hopper when the on-off valve is appropriately opened and closed.

  The recovery and spraying device according to claim 6 is the recovery and spraying device according to claim 5, wherein the lower opening is formed in a rectangular shape that is long in a transport direction of the recovery spraying carriage, and the spraying port is connected to the recovery spraying device. A plurality of the trolleys are formed in the conveying direction of the scatter carriage, and are arranged in a line along the weld line.

  According to such a configuration, a plurality of spray ports of the recovery and scattering device are formed in the transport direction of the recovery and distribution cart, and the flux is aligned with the weld line by being arranged in a line along the weld line. Can be sprayed accurately on the position.

  According to the recovery and spray device of the first aspect of the present invention, the area of the inner bottom of the hopper of the recovery and spray device is formed to have a size of 20% or more of the area of the upper opening. Even if there is a size limitation, the flux storage capacity is drastically increased while maintaining the size within the outer diameter size limitation, and a large amount of flux is conveyed and sprayed in an appropriate amount at once. be able to. For this reason, since the collection | recovery dispersion | distribution apparatus can convey a flux in large quantities for a short time, it can improve the conveyance efficiency of a flux.

  According to the collecting and dispersing apparatus of the second aspect of the present invention, the capacity of the hopper is increased by increasing the volume in the hopper by the amount of the inner walls before and after the conveying direction side being vertical and not inclined. Can do.

  According to the recovery and spray device of the third aspect of the present invention, the maximum opening area when the lower opening is opened to the maximum is formed to be 10% or more of the area of the upper opening. Even if the outer dimensions are limited, the flux storage capacity can be increased as compared with a conventional hopper without exceeding the outer diameter, and a large amount of flux can be conveyed and sprayed at one time. For this reason, the collecting and spreading device can convey and spread a large amount of flux in a short time, thereby reducing the number of operations for loading and replenishing the flux on the collecting and spreading carriage, and improving the flux carrying efficiency and spreading efficiency. Can be improved.

  According to the collection and spraying device of claim 4 of the present invention, the hopper includes two storage portions, a backing flux storage portion and an underlay flux storage portion, so that a large amount of the backing flux storage portion and By transporting the underlay flux, each flux can be dispersed in an appropriate amount. For this reason, the collection trolley equipped with a hopper can efficiently perform the scatter work with a single trolley when transporting and spreading the backing flux and the underlay flux. Can be improved.

  According to the recovery / spreading apparatus of the fifth aspect of the present invention, the underlay flux or the backing flux loaded on the hopper can be properly sprayed by appropriately opening and closing the on-off valve.

  According to the recovery and spray device according to claim 6 of the present invention, the plurality of flux spray ports are formed toward the transport direction of the recovery and distribution cart, and are arranged in a line along the weld line. The flux can be accurately dispersed according to the position of the weld line. For this reason, when welding with a single-sided welding apparatus, it is possible to suppress the occurrence of poor welding due to poor adhesion of the flux and obtain a good weld shape.

It is a principal part expansion longitudinal cross-sectional view which shows the single-sided welding apparatus in which the collection | recovery dispersion | spreading apparatus which concerns on this invention is used. It is a principal part perspective view which has a partial cross section which shows the single-sided welding apparatus in which the collection | recovery dispersion | spreading apparatus which concerns on this invention is used. It is a principal part enlarged front view which has a partial cross section which shows the collection | recovery dispersion | spreading apparatus which concerns on this invention. It is a figure which shows the collection | recovery dispersion | spreading apparatus which concerns on this invention, and is a principal part enlarged front view which has a partial cross section which shows a state when pressing the flux with a wheel. It is a figure which shows the collection | recovery dispersion | spreading apparatus which concerns on this invention, and is a principal part enlarged front view which has a partial cross section which shows a state when raising a flux. It is a side view which shows the collection | recovery dispersion | spreading apparatus which concerns on this invention. It is a figure which shows the collection | recovery dispersion | spreading apparatus which concerns on this invention, and is an enlarged plan view which shows a state when the lower open port is closed. It is a figure which shows the collection | recovery dispersion | spreading apparatus which concerns on this invention, and is an enlarged plan view which shows a state when a lower open port is opened. It is a schematic perspective view which shows the hopper of the collection | recovery dispersion | spreading apparatus which concerns on this invention. It is a schematic perspective view which shows the comparative example of the hopper of a collection | recovery dispersion | spreading apparatus.

  An embodiment of a recovery and distribution device 50 according to the present invention will be described in detail with reference to the drawings. In the description of the embodiment, the longitudinal direction is a direction parallel to the weld line M of the workpiece E, and the width direction is a direction orthogonal to the weld line M. Prior to the description of the recovery / spreading device 50, the single-side welding device 1 in which the recovery / spreading device 50 is used will be described.

≪Configuration of single-sided welding equipment≫
As shown in FIG. 1, the single-sided welding device 1 is a welding device that uses a flux F to weld materials E, E to one-side by a welding machine 30 along a welding line M. The single-sided welding device 1 includes a welding machine 30, a carriage frame 104, a material to be welded and fixing means 105, a backing device 10, a support structure 20, a gantry frame 27, and a lifting device 26, which will be described later. And a recovery flux conveying device 28 and a recovery spraying device 50 (see FIG. 2).

<Flux composition>
As shown in FIG. 2, the flux F is made of a powdery material used for the purpose of removing oxides and harmful substances generated by welding, blocking the atmosphere of the welded part, shaping the welded part shape, and the like. The flux F consists of two types, for example, a backing flux F1 pressed against the back side of the welding line M (see FIG. 1) and an underlay flux F2 laid below the backing flux F1. The backing flux F <b> 1 and the underlay flux F <b> 2 are separately stored and transported in the hopper 52 of the collection and distribution cart 51 of the collection and distribution device 50 described later, and are distributed and stacked on the trough 40. Thereafter, the upper backing flux F1 is supplied so as to be in close contact with the back side of the welded portion of the material to be welded E (see FIG. 1) during welding.

≪Configuration of welded material≫
As shown in FIG. 1, the material to be welded E is a steel plate or the like having a large area used in a ship or the like, and is made of, for example, a large metal flat plate with a side of 10 to 30 m. The welded material E is formed by welding and joining welding lines M of steel plates of a certain size by a welding machine 30.

≪Configuration of welder≫
As shown in FIG. 1, the welding machine 30 is a machine that is disposed above the backing device 10 and welds the workpiece E from the front side of the welding line M. The welding machine 30 is movably attached to a welding machine traveling carriage 31 that travels a welding machine beam 101 that extends along the longitudinal direction of the backing member 11 of the backing apparatus 10, and the welding machine traveling carriage 31. An adjustment jig 32 and a welding torch 33 attached to the adjustment jig 32 are provided.

  Then, the bearing 31a is fixed to the welding machine traveling carriage 31, and the adjustment jig 32 is moved to the backing member by moving the welding machine moving rail 32a provided in the adjustment jig 32 via the fixed bearing 31a. 11, the welding torch 33 attached to the adjustment jig 32 moves.

≪Dolly frame structure≫
As shown in FIGS. 2 and 3, the bogie frame 104 is formed so as to have a concave shape in cross-section, with a steel square frame, the upper part is opened, and the backing device 10 is supported inside, It is a frame extending along the longitudinal direction of the backing device 10. The carriage 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 extending from the auxiliary beams 104d and 104d toward the opposite side of the backing device 10, respectively. It has. In the bogie frame 104, wheels 108 are installed below the connecting beams 104 b, and the wheels 108 move on a plurality of rod-like rails 107 arranged in parallel at a predetermined interval in the longitudinal direction of the backing device 10. Accordingly, the backing device 10 moves in the width direction.

  The welded material conveying and fixing means 105 is disposed above the auxiliary beam 104d of the carriage frame 104 and horizontally moves the welded material E (see FIG. 1) above the backing device 10, and the panel moving roller 105a. The magnet device 105b and the like. Further, in order to assist the conveyance and fixing means 105 to convey the workpiece E (see FIG. 1), an auxiliary roller 106 is disposed on the top of the carriage frame 104 (cantilever 104e).

≪Configuration of backing device≫
As shown in FIG. 1, the backing device 10 is a device that presses the flux F against the back surface of the welding line M where the materials to be welded E and E are abutted to each other. is set up.
As shown in FIG. 3, the backing device 10 includes a backing member 11 (described later) and an air hose 25 that raises and lowers the backing member 11, and is provided on the support structure 20.

≪Configuration of backing member≫
As shown in FIG. 3, the backing member 11 is a portion that presses the flux F stored in the trough 40 against the back surface of the welding line M. The backing member 11 is made of, for example, a trough-type backing device 10 that presses the flux F stored in the trough 40 against the back surface of the welding line M. The backing member 11 includes a flux F, a trough 40 that holds the flux F, and a trough frame 41. As shown in FIG. 4, at the upper part of the backing device 10, a recovery and spreading device 50 for supplying the backing flux F1 and the underlay flux F2 to the trough 40 is arranged movably in the direction of the welding line M (see FIG. 1). Has been.

≪Configuration of trough≫
As shown in FIG. 4, the trough 40 is a long container that supports the flux F supplied from the collecting and dispersing device 50 so as to be supplied to a position below the welding line M (see FIG. 1). Become. The trough 40 is disposed along the weld line M, and is made of a heat-resistant elastic body formed in a substantially U-shaped groove when viewed from the front and formed in a substantially linear groove when viewed from the top. The trough 40 is fixed together with the fixing plate 41b in a state where the upper and lower ends of the trough 40 are interposed inside the upper ends of the pair of trough support frames 41a and 41a and the fixing plate 41b is attached. By being fixed by the tool 41c, the trough support frames 41a and 41a are arranged so as to span between the upper ends of the trough support frames 41a and 41a. The trough 40 is formed of a material whose bottom portion is deformed when it is pushed upward by the expansion of the first air hose 25a or the second air hose 25b disposed below the trough 40.

≪Configuration of trough frame≫
As shown in FIG. 5, the trough frame 41 is a frame member that holds the left and right ends of the trough 40. The trough frame 41 includes trough support frames 41a and 41a erected on both left and right sides of the trough 40, fixing plates 41b and 41b for fixing the trough 40 to the trough support frames 41a and 41a, and fixing plates 41b and 41b. Fixing means 41c, 41c for fixing the trough support frames 41a, 41a to the trough support frames 41a, 41a, a support plate 42 for erecting the trough support frames 41a, 41a, and a guide rod 24 suspended from the center of the lower surface of the support plate 42. A rail 44 (see FIG. 6) on which wheels 59 of the collection and distribution carriage 51 to be described later roll is fixed integrally. The trough frame 41 is configured to be lifted and lowered by two types of lifting means such as expansion and contraction of the third air hose 25c and the lifting device 26.

≪Air hose configuration≫
As shown in FIGS. 4 and 5, the air hose 25 is a hose whose height is variable by expansion or contraction due to compressed air fed into the air hose 25. The air hose 25 functions as a lifting device that raises and lowers the trough 40 containing the flux F directly or indirectly to press the flux F against the back surface of the weld line M of the material E to be welded. The air hose 25 is composed of three types of hoses, for example, one first air hose 25a, one second air hose 25b, and two third air hoses 25c, for a total of four. The 1st air hose 25a, the 2nd air hose 25b, and the 3rd air hose 25c are each connected to a pressurization apparatus (illustration omitted), and compressed air is supplied.

  The first air hose 25a, the second air hose 25b, a hose band (not shown), and a hose band fixing clip (not shown) are formed in a trough frame formed in a concave shape when viewed in cross section below the trough 40 having a U-shaped cross section. 41 is mounted on the inner bottom. The first air hose 25a and the second air hose 25b are vertically arranged between the trough 40 and the upper part of the trough frame 41 so that the second air hose 25b having a smaller diameter than the first air hose 25a is arranged vertically with the first air hose 25a. In an overlapped state, the trough frame 41 is arranged along the length direction.

≪Configuration of support structure≫
As shown in FIG. 5, the support structure 20 is a frame on which the backing member 11 is mounted on the upper portion, and is arranged along the weld line M. The support structure 20 includes a top plate 23 that extends along the longitudinal direction of the backing member 11, side plates 22, 22 that are suspended on both sides in the width direction of the top plate 23, and both side plates 22, 22. Between the bottom plate 21 horizontally connected to each other, the chain support rails 71 and 72 provided on one side plate 22, and the chain support rails 71 and 72. The flux is placed on the endless chain (not shown). And a cover member 29 that suppresses F from falling.

  The top plate 23 is a long thick plate material extending over the entire length in the longitudinal direction of the backing member 11, and third air hoses 25 c and 25 c are disposed on the top plate 23. Between the pair of third air hoses 25c, 25c placed on the top plate 23, a guide hole (not shown) is formed in which the guide rod 24 is inserted so as to be movable up and down.

As shown in FIG. 3, the bottom plate 21 is supported by a backing roller portion 27 a disposed on the top of a gantry frame 27 described later, and adjusts the position of the backing member 11 in the width direction with respect to the welding line M. The stopper 24a of the guide rod 24 when the bottom plate 21 is raised comes into contact with the bottom plate 21. The support structure 20 is horizontally moved in the width direction on the backing roller portion 27a (see FIG. 2) by a support structure driving device (not shown) provided with an engagement portion that engages with the bottom plate 21. .
The side plate 22 is a thick plate member that serves as a support column of the support structure 20, and is arranged in parallel along the weld line M.

  The guide rod 24 is an elevating guide member that supports the support plate 42 so as to move in the vertical direction when the support plate 42 is raised and lowered by the air hose 25, with respect to the top plate 23 and the bottom plate 21 of the support structure 20. It consists of a support that is supported so that it can move up and down.

≪Configuration of mount frame≫
As shown in FIG. 3, the gantry frame 27 is a frame that is arranged immediately below the support structure 20 and is framed in a substantially box shape that moves up and down in the vertical direction. A backing roller portion 27a is disposed. The gantry frame 27 is interposed between a lower frame 27b extending in the width direction, side frames 27c and 27c formed in a ladder shape at both ends of the lower frame 27b, and the side frames 27c and 27c. It has a pair of clamping plates 27d and 27d.

≪Configuration of recovered flux transfer device≫
As shown in FIG. 3, the recovered flux conveying device 28 is a conveying device that is disposed inside the gantry frame 27 and collects and conveys the used flux F that has been scraped off after welding of the welding line M. , Consisting of a screw conveyor. The recovered flux conveyance device 28 includes an inclined portion 28a that expands in a V shape above the gantry frame 27, and a screw-like conveyor portion 28b that discharges the recovered flux F to the outside.

≪Configuration of collection and spraying device≫
As shown in FIG. 6, the recovery / spreading device 50 transports and spreads the backing flux F <b> 1 and the underlay flux F <b> 2 that are used when the welded materials E and E are welded to one side along the weld line M. This is a device for collecting the used backing flux F1. The recovery and spraying device 50 sprays the backing flux F1 and the underlay flux F2 on the trough 40 (see FIG. 5), and scrapes and collects the solidified used backing flux F1 and collects it. A drive mechanism (not shown) for moving the collection scattering carriage 51 by driving a support chain 20 along a length direction of the support structure 20 with a chain or belt (not shown) by a drive motor (not shown), and the drive mechanism and the recovery And a traction bracket 53b for connecting the scattering carriage 51.

<Configuration of the collection and spreading cart>
As shown in FIG. 6, the collection and spreading carriage 51 is a carriage that mounts a hopper 52 and travels on the rail 44 along the welding line M. The recovery and spreading carriage 51 is provided on one of the hopper 52 that stores the backing flux F1 and the underlay flux F2, the carriage main body 53 on which the hopper 52 is mounted, and the conveyance direction of the carriage main body 53 (the welding line M direction). The solidified flux scraper 54, the position adjusting device 55 for adjusting the positions of the flux F spray ports 57a, 58a, the scraper 56 provided at the front and rear lower parts of the carriage main body 53, and the carriage main body 53 are provided. A traction portion 53a to which the other end portion of the traction bracket 53b is connected, and a wheel 59 that rolls on the rail 44 and the like are provided.

≪Configuration of collection and spreading cart≫
The collecting and spreading cart 51 includes a partition plate 52g that partitions the storage portion 52a into a backing flux storage portion 52b that stores the backing flux F1 and an underlay flux storage portion 52c that stores the underlying flux F2. The hopper 52 which stores the kind of flux F and the on-off valves 57 and 58 for spraying the backing flux F1 and the underlay flux F2 are mainly provided.

≪Configuration of hopper≫
As shown in FIG. 6, the hopper 52 is a member having a container-like storage portion 52 a for storing the flux F, and is mounted on the collection / dispersion carriage 51. The hopper 52 mainly includes a hopper main body 52d having a storage portion 52a formed with its upper portion expanded.

<Configuration of hopper body>
The hopper main body 52d is a main body that forms the hopper 52, is formed in an inverted triangle shape when viewed from the front (see FIG. 5), and is made of metal that forms a storage portion 52a that is formed in a rectangular shape when viewed from the side and in plan view. It is a member. The hopper main body 52d has inclined wall surfaces 52i and 52i 'that form an inclined inner wall that is inclined on the left and right sides or one side, and vertical wall surfaces 52j and 52j' that form vertical front and rear inner walls. Upper opening 52e, 52e 'opened toward the inside, inner bottom 52h, 52h', and lower opening 52f, 52f 'formed in the inner bottom 52h, 52h', is formed in a substantially container shape. ing. On the lower side of the lower opening 52f, 52f ′ of the hopper body 52d, on-off valves 57, 58 having spraying ports 57a, 58a are respectively slidable in the width direction.

  As shown in FIG. 9, the hopper 52 has the overall dimensions of the height H, the length L, and the width W of the entire hopper within predetermined dimensions. The hopper 52 is formed such that the width of the inner bottoms 52h and 52h ′ is 1/5 W of the width W of the upper opening 52e and 52e ′. The length of the inner bottoms 52h and 52h ′ in the transport direction is formed to the same length L as the length of the upper open ports 52e and 52e ′ in the transport direction. The inner walls before and after the hopper 52 are formed by vertical wall surfaces 52j and 52j ′ and are not inclined. Further, the entire area S2 of the inner bottoms 52h and 52h ′ of the hopper 52 is formed to be 20% or more of the entire area S1 of the upper open ports 52e and 52e ′. For this reason, the hopper 52 is formed in a shape in which the ratio of the size of the area S2 of the inner bottoms 52h, 52h ′ to the area S1 of the upper opening 52e, 52e ′ is increased. The shape (the storage capacity of the flux F) is large.

<Configuration of storage unit>
As shown in FIGS. 6 and 7, the storage portion 52a is formed with a storage space having a substantially inverted quadrangular pyramid shape. The storage section 52a is divided into two parts, a backing flux storage section 52b for storing the backing flux F1 and an underlay flux storage section 52c for storing the underlying flux F2.

<Configuration of upper opening>
The upper open ports 52e and 52e ′ are inlets for the flux F to be input into the storage portion 52a, and are formed of rectangular openings that are divided in the front-rear direction by the partition plate 52g. Between the upper opening 52e, 52e ′ and the inner bottom 52h, 52h ′, the left and right inner wall surfaces are inclined downward from the upper opening 52e, 52e ′ toward the center of the inner bottom 52h, 52h ′. The inclined wall surfaces 52i and 52i ′ (see FIG. 4) formed in the above are formed, and the flux F is guided to the inclined wall surfaces 52i and 52i ′ so as to move toward the spray ports 57a and 58a.

<Configuration of lower opening>
The lower opening 52f, 52f ′ is formed to extend in the front-rear direction at the center of each inner bottom 52h, 52h ′ of the backing flux storage portion 52b and the underlay flux storage portion 52c.
The lower open ports 52f and 52f ′ are formed in a rectangular shape that is long in the transport direction (the direction of the welding line M) of the collection and spreading carriage 51. On the lower side of the lower opening 52f, 52f ′ of the hopper body 52d, on-off valves 57, 58 having spraying ports 57a, 58a are horizontally disposed so as to be slidable in the width direction.
As shown in FIG. 9, in the lower opening 52f, 52f ′, the maximum opening area S3, S3 when the opening is maximized is 10% of the total area S1 of the upper opening 52e, 52e ′. It is formed as described above.

<Configuration of partition plate>
As shown in FIGS. 6 and 7, the partition plate 52g is formed of a flat plate member which is vertically installed in the width direction from the upper opening 52e, 52e ′ in the hopper 52 to the inner bottom 52h, 52h ′. Become.

<Configuration of on-off valve>
As shown in FIG. 7, the on-off valves 57 and 58 are a pair of valves that open and close the lower opening ports 52f and 52f ′ formed on the inner bottoms 52h and 52h ′ of the hopper body 52d. Consists of. The on-off valves 57 and 58 are substantially flat plate-like valve bodies provided on the lower surfaces of the inner bottoms 52h and 52h ′ of the hopper 52 so as to be slidable in the width direction. The backing flux F1 and the underlay flux F2 are respectively sprayed.
The opening / closing valve 57 for the backing flux F1 has a spraying port 57a for discharging the backing flux F1 when it slides and overlaps with the lower opening 52f, 52f ′, and an operator manually opens and closes it. An operation portion 57b that is gripped and operated is formed. Similarly, the opening / closing valve 58 for the underlay flux F2 includes a spraying port 58a that discharges the underlay flux F2 when it slides and overlaps with the lower opening 52f, 52f ′, and an operator when opening and closing. And an operation portion 58b to be operated. That is, the on-off valve 57 and the on-off valve 58 have the same structure and are arranged side by side in the storage portion 52a.

  A plurality of spraying ports 57a, 58a are formed in the central portion of the collection spraying carriage 51 in the transport direction, and are arranged in a line along the weld line M in the transport direction. That is, the spray ports 57a and 58a are disposed on the relative center line S of the weld line M on the inner bottoms 52h and 52h ′ of the hopper body 52d, and spray the flux F on the trough 40 along the weld line M. (See FIG. 2).

<Configuration of the cart body and the towing unit>
As shown in FIG. 6, the carriage main body 53 is a frame structure that forms the main body of the collecting and spreading carriage 51, and mainly includes a skeleton frame that forms a skeleton and a metal plate material fixed to the skeleton frame. Is formed. The carriage main body 53 includes a traction portion 53a to which a traction bracket 53b is attached, the hopper 52, a flux scraper 54 for scraping off unnecessary flux F such as solidified flux F, and flux F spray ports 57a and 58a. Are provided with a position adjusting device 55 for adjusting the position, a scraper 56, the on-off valves 57 and 58, and a wheel 59.

  The traction part 53 a is a member for connecting the carriage main body 53 to a drive mechanism (not shown) that moves the collection / dispersion trolley 51 through the traction bracket 53 b, and is fixed to the center of the side surface of the carriage main body 53. Yes.

<Configuration of flux scraper>
The flux scraper 54 is a member for scraping the solidified used backing flux F <b> 1 on the trough 40. The flake scraper 54 includes a blade 54 a provided obliquely with respect to the conveying direction, and a comb tooth 54 b provided on the blade 54 a and having a tip portion inserted into the flux F in the trough 40. The flux scraper 54 is provided so as to be movable in the vertical direction (see FIG. 6).
As shown in FIG. 5, the solidified flux F is scraped off while the second air hose 25 b is expanded and the trough 40 is lifted to raise the flux F higher than the upper end of the trough frame 41.

<Configuration of position adjusting device>
As shown in FIG. 6, the position adjusting device 55 is a member for adjusting the height of the spray ports 57a, 58a of the flux F, and a connecting member 55a for moving the spray ports 57a, 58a up and down, And an operation handle 55b provided on the connecting member 55a. The spray ports 57a and 58a are used in a state where the operation handle 55b is rotated and lowered when the flux F is sprayed, and when the flux F is collected, the operation handle 55b is reversed and raised to spread the spray port. 57 a and 58 a are retracted from the trough frame 41.

<Configuration of scraper>
The scraper 56 is a member for dropping the flux F falling on the rail 44 downward, and includes a plate-like member 56 a that scrapes the flux F to the outside of the rail 44. The plate-like member 56 a is installed obliquely with respect to the conveyance direction, and causes the flux F dropped on the rail 44 to fall on the recovered flux conveyance device 28.

<Composition of wheel>
The wheel 59 is a wheel for traveling 59a made of a rotating body that rolls on the rail 44 and moves the collecting and spreading carriage 51 in the conveying direction, and a roller for pushing down the trough 40 when spreading the underlay flux F2. Wheel 59b. The traveling wheels 59a are made of, for example, metal, and are arranged on the front and rear, left and right of the carriage main body 53, and roll on the rails 44 provided at the left and right ends of the trough frame 41.

  As shown in FIGS. 4 and 5, the trough pushing wheel 59b is configured so that the underlay flux F2 is appropriately adjusted by rolling the wheel 59b on the underlay flux F2 after the solidified spent flux F is collected. It is an apparatus for adjusting the shape of the trough 40 by pressing the trough 40 by pressing with a pressing force. The wheel 59b is attached to the front surface of the hopper body 52d on the conveyance direction side via a wheel support member 59c that rotatably supports the wheel 59b.

≪Operation of single-sided welding equipment≫
Next, the operation of the single-side welding apparatus 1 according to the present invention will be described with reference to FIGS.
In the case of performing welding with the single-sided welding apparatus 1 of the present invention, prior to performing the welding operation, preparation steps such as supply of the flux F, which is the preparation, are performed, and at that time, the collecting and spreading carriage 51 is used. The

  As shown in FIG. 7, the collecting and spreading carriage 51 other than the time of spreading before spreading the flux F is in a closed state in which the on-off valves 57 and 58 are pushed in the valve closing direction (arrow A direction). At this time, the spray ports 57a and 58a are displaced from the lower open ports 52f and 52f ′. For this reason, the backing flux F1 and the underlay flux F2 in the backing flux storage portion 52b and the underlay flux storage portion 52c are not discharged from the spray ports 57a and 58a.

FIG. 9 is a schematic perspective view showing the hopper 52 of the recovery and distribution cart 51 of the present invention. FIG. 10 is a schematic perspective view showing a comparative example of the hopper 520 of the collection / dispersion carriage 510.
Here, the storage capacity of the flux F of the hopper 520 of the comparative example and the storage capacity of the flux F of the hopper 52 of the present invention will be described with reference to FIGS. 9 and 10.

  As shown in FIGS. 9 and 10, the hoppers 52 and 520 of the present invention and the comparative example have the same dimensions with the upper open ports 52 e and 520 e ′ having a length L, a width W, and a height H. That is, the hoppers 52 and 520 have the same overall size and are formed in a predetermined external dimension.

The hopper 520 of the comparative example shown in FIG. 10 is of a size used for a general collection and distribution cart 510, and the lengths of the inner bottoms 520h and 520h ′ are 1 / 5L to 1 / 4L and the width is. 1 / 5W. That is, the hopper 520 has a substantially inverted quadrangular pyramid shape in which the length and width in the transport direction are reduced toward the lower side when viewed from the front and the side. For this reason, the area S10 of the upper opening 520e of the hopper 520 is
S10 = W × L
Whereas, the area S20 of the inner bottoms 520h and 520h ′ is
S20 = 1 / 5W × 1 / 4L
The shape is greatly reduced. Note that the area S30 of the lower opening is also reduced in accordance with the area S20 of the inner bottoms 520h and 520h ′.
As a result, the storage capacity V10 of the hopper 520 of the comparative example is
V10 = H / 3 (S10 + S20 + √ (S10 × S20))
= (1 + 1/20 + √ (1/20)) / 3W × L × H
≒ 2 / 5W × L × H
It has become.

On the other hand, the hopper 52 of the present invention is rectangular when viewed from the side, and the length L in the transport direction of the inner bottoms 52h and 52h 'is the same shape as the length L of the upper open ports 52e and 52e'. . That is, the length L in the transport direction of the inner bottoms 52h and 52h ′ is formed to be not less than ½ L of the length in the transport direction of the upper open ports 52e and 52e ′. It is longer than the length in the conveyance direction of 520h ′.
The widths of the inner bottoms 52h and 52h ′ are 1/5 W, which is the same as the hopper 520 of the comparative example, because the spreading width of the flux F is the same.
Note that the length L1 + L2 in the transport direction of the lower opening 52f, 52f ′ can be formed longer to match the length L of the inner bottom 52h, 52h ′ in the transport direction, and the upper opening 52e, 52e ′. It is formed to have a length of 1/5 or more of the length L in the transport direction.

That is, the area S2 of the inner bottoms 52h and 52h ′ of the hopper 52 of the present invention is
S2 = L × 1 / 5W
And is formed in a size of 20% or more of the area S1 of the upper opening 52e, 52e ′. For this reason, the storage capacity V of the hopper 52 of the present invention is
V = 3 / 5W × L × H
Thus, the storage capacity is 1.5 times that of the storage capacity V10 of the hopper 520 of the comparative example. Therefore, since the hopper 52 of the present invention has a large storage capacity compared to the hopper 520 of the comparative example, a large amount of flux F can be conveyed at one time.

  Then, when the flux F is sprayed, the flux F is supplied onto the trough 40 of the backing member 11 from the collection spray cart 51 loaded with the flux F, as shown in FIG. At that time, the air hose 25 is in a contracted state as shown in FIG. Therefore, the trough frame 41 is in a state where the support plate 42 is placed on the upper ends of the side plates 22 and 22 and is lowered. When supplying the flux F, the driving device (not shown) is driven to spread the flux F while running the collection scattering carriage 51 in one direction.

  When spraying the flux F, the on-off valves 57 and 58 in the closed state shown in FIG. Then, as shown in FIG. 8, the on-off valves 57 and 58 move in the valve opening direction (arrow B direction), and a plurality of spraying ports 57a and 58a overlap with the lower opening ports 52f and 52f ′ to open the communication. It becomes a state. Then, the backing flux F1 and the underlay flux F2 in the backing flux storage portion 52b and the underlay flux storage portion 52c are discharged from the spray ports 57a and 58a and sprayed.

  Then, as shown in FIG. 5, compressed air is injected into the air hose 25 by a pressurizing device (not shown) to expand, the flux F in the trough 40 is raised, and the back side of the welding line M of the workpiece E Press against. In this state, as shown in FIG. 1, the backing member 11 of the backing device 10 is moved along the welding line M of the workpiece E while moving the welding machine 30 on the welding machine beam 101 at a predetermined speed. One side welding is performed by the welding torch 33 from the front side of the welding line M, and the workpieces E and E are welded.

Next, when there are a plurality of weld lines M, the air in the air hoses 25 and 25 is discharged, the trough frame 41 and the trough 40 are lowered, and the flux F is pulled away from the back side of the welded material E. Then, the gantry frame 27 is lowered by the lifting device 26, the backing member 11 is further lowered from the back side of the material to be welded E, and the flux F is separated from the back surface of the material to be welded E. Thereafter, the used part of the flux F on the trough 40 is removed. That is, after welding with the welding machine 30, the flux F is solidified by welding heat, so the solidified flux F must be removed in order to perform the next welding.
When the flux F is to be removed, the collecting scraper truck 51 is run while the flux scraper 54 is lowered onto the trough 40 from the collecting sprinkler truck 51 shown in FIG. The spent flux F solidified above is scraped off and removed.

  At the same time, as shown in FIG. 3, the removed flux F is recovered from the trough 40 by the flux scraper 54 (see FIG. 6) while the recovery and distribution carriage 51 is running. It is dropped onto the flux conveying device 28, conveyed to a predetermined collection place by the conveyor unit 28b, collected and discarded.

  Thereafter, the collection and distribution carriage 51 is run in a state where the opening and closing valves 57 and 58 are pulled to open the lower opening 52f and 52f ′, and a second flux supply for replenishing the new flux F on the trough 40 is performed. Do.

  Such an operation is performed several times until the weld line M disappears. Then, when the flux F is transported and sprayed by the recovery spray cart 51, a large amount of flux F can be transported at a time and an appropriate amount of flux F can be sprayed. Accordingly, the number of operations for loading and replenishing the flux F on the hopper 52 can be reduced, so that the work efficiency can be improved.

  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, in the above-described embodiment, the single-side welding device 1 including the trough type backing device 10 using the trough 40 has been described as an example. However, the copper plate type using the backing copper plate for the backing device 10 is described. It does not matter.
Moreover, as shown in FIGS. 6-8, you may provide the said partition plate 52g so that attachment or detachment is possible with respect to the accommodating part 52a. For example, in the case of a copper plate type backing device 10 provided with a backing copper plate (not shown), only one kind of backing flux F1 is used, so there may be only one storage portion 52a. For this reason, in the case of the copper plate type backing device 10, the partition plate 52g may not be provided. In this case, the on-off valves 57 and 58 may be integrated into one according to the storage portion 52a.

DESCRIPTION OF SYMBOLS 1 Single-sided welding apparatus 10 Backing apparatus 50 Recovery spraying apparatus 51 Recovery spraying carriage 52 Hopper 52a Storage part 52b Backing flux storage part 52c Underlay flux storage part 52e, 52e 'Upper opening 52f, 52f' Lower opening 52g Partition plate 52h , 52h 'inner bottom 52j, 52j' vertical wall surface (inner wall)
57, 58 On-off valve 57a, 58a Spreading port S1 Area of upper opening S2 Area of inner bottom of hopper S3 Maximum opening area of lower opening E Material to be welded F Flux F1 Backing flux (flux)
F2 Underlay flux (flux)
M welding line

Claims (6)

A hopper for storing a flux used when welding one side along the welding line where the materials to be welded are butted together is provided, and provided with a recovery spraying carriage that moves along the welding line, and the flux is dispersed, In the collection and spraying device that collects used flux,
The hopper has an upper opening that opens upward, and
A lower opening formed in the inner bottom of the hopper;
An on-off valve that opens and closes the lower opening,
The length in the transport direction of the lower opening is formed to be 1/5 or more of the length in the transport direction of the upper opening,
The area of the inner bottom is formed to have a size of 20% or more of the area of the upper opening.   The recovery and spray device according to claim 1, wherein the hopper is formed such that inner walls on the front and rear sides on the conveyance direction side are formed vertically.   The recovery spray according to claim 1 or 2, wherein the lower opening has a maximum opening area that is 10% or more of the area of the upper opening when the opening is maximized. apparatus. The flux consists of two types, a backing flux pressed against the back side of the welding line of the material to be welded, and an underlay flux laid under the backing flux,
The hopper includes a partition plate that divides the hopper into a backing flux storage portion in which the backing flux is stored and an underlay flux storage portion in which the underlay flux is stored,
The said on-off valve is respectively provided under the inner bottom of the said hopper, The said lower opening is opened, and the said backing flux or the said underlay flux is spread | dispersed. The collection | distribution spraying apparatus of any one. The on-off valve is arranged to be slidable in a horizontal direction under the lower opening, and a spout for discharging the flux is formed.
The said flux is sprayed from the said spraying port through the said lower open port, when the said spray port overlaps with the said lower open port by sliding the said on-off valve. Item 5. The collection / dispersion device according to any one of Items4. The lower opening is formed in a rectangular shape that is long in the transport direction of the collecting and spreading carriage,
The said dispersion | spreading opening is formed in multiple numbers toward the conveyance direction of the said collection | recovery distribution trolley | bogie, and is arrange | positioned in a line along the said welding line, The collection | recovery distribution apparatus of Claim 5 characterized by the above-mentioned.

Images