JP3539830B2 - Spraying and collecting welding flux - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flux spraying apparatus in the field of welding, and more particularly, to a flux supply and recovery combined use that removes slag and residual flux generated on the upper surface of a backing copper plate after welding in addition to this spraying. The present invention relates to a back flux spraying device.
[0002]
[Prior art]
For example, in the joint welding of a large-area steel sheet panel, adjacent ends of a steel sheet of several meters in size, which are arranged in a straight line over a length of several tens of meters, are brought into contact with the center position of a backing copper plate. Then, welding between the steel plates is performed from above. For this welding, a welding flux is sprayed on the upper surface of the backing copper plate. The spraying is performed by using a rail to move a spreading trolley equipped with a flux hopper. When the welding is completed, the upper surface of the backing copper plate contains slag melted and solidified by the welding operation and unmelted residual flux, so the upper surface of the backing copper plate is cleaned for the next welding operation. There is a need.
[0003]
Spraying and collecting flux during welding work at plate joining has conventionally required a lot of manual labor. Therefore, a slag crushing tool and a scraper for removing the slag to the side of the backing copper plate are supported on the flux spraying trolley through a locking tool, and the slag is used by using the locking tool when the flux is sprayed. The crushing tool and the scraper are held at a retracted position away from the backing copper plate, and at the time of slag removal, the slag crushing tool and the scraper are held at the operation position where they contact the backing copper plate. A flux spraying truck for selectively performing spraying and slag removal has been developed (Japanese Patent Laid-Open No. 6-344146). The position change of the locking tool between the retracted position and the operating position is manually performed. The cart also has a collection hopper for receiving slag removed from the backing copper plate. After the flux is sprayed on the upper surface of the backing copper plate, a steel plate for welding is arranged on the backing copper plate, and the gap between the steel plates is welded with a single-sided sub-mark. When this is completed, the welded steel plate is carried out from the backing copper plate, and the slag on the backing copper plate is removed and collected.
[0004]
Immediately before the above-mentioned flux spraying before the start of welding, the operator operates the locking tool to move it from the operation position to the retracted position, and operates the flux supply opening of the flux spreading hopper from closed to open. When the flux application is completed, the operator operates the flux supply opening from open to closed and operates the locking member to move it from the retracted position to the operating position. When the welding is completed and the slag is collected, the operator opens the slag discharge port of the collection hopper, removes the slag from the collection hopper, and closes the slag discharge port.
[0005]
[Problems to be solved by the invention]
As described above, in one single-sided sub-mark welding, the operator operates the opening operation of the flux supply opening of the flux spraying hopper, the operation from the operating position of the locking device to the retracted position, and the closing of the flux supply opening. Operation and operation of the locking device from the retracted position to the operating position, and opening and closing of the discharge port of the slag collection hopper must be performed. Since these are hard work, reduction is desirable. On the other hand, the collecting hopper receives the slag removed by the scraper from the upper surface of the backing copper plate, and therefore has a bottom considerably below the upper surface of the backing copper plate. It is necessary to cut the groove which becomes the passage of the. Also, a position where the slag of the collection hopper is discharged requires a deep hole or groove below the bottom of the collection hopper, and the depth is deeper than the passage groove of the slag collection hopper. Construction of these grooves is relatively large floor construction.
[0006]
Therefore, there is a demand for a device which has a function of automatically switching between flux spraying and slag collection, and which can be accommodated in a small space. By providing an electric mechanism on the trolley, it is possible to automate the switching work, but for that purpose, it is necessary to route or wire an electric cable connecting the trolley and the ground control panel along the backing copper plate. In addition, the laying of electric cables is a new problem.
[0007]
The present invention automates the function switching of flux spraying, collection truck spraying, and slag collection, and it is substantially unnecessary to lay or route an electric cable over substantially the entire length of the backing copper plate for this automation. The first object is to make the flux spraying and collection truck fit in a small space, and the second object is to make the groove construction for flux spraying and collection unnecessary or small. This is the third object.
[0008]
[Means for Solving the Problems]
(1) The present invention relates to a truck (1) running along an upper surface of a backing copper plate (3) in a direction in which the backing copper plate extends, and a hopper mounted on the truck to spray welding flux on the upper surface of the backing copper plate. (5), welding with a crusher (30) for crushing slag generated on the upper surface of the backing copper plate by welding, and a scraper (7) for removing slag from the upper surface of the backing copper plate In flux spraying and recovery equipment,
Opening / closing means (6, 17) for opening and closing an opening (5a) for supplying a flux to an upper surface of a backing copper plate of the hopper on the carriage;
Drive means (15, A1 to A4) for driving the crushing tool and the scraper to the slag crushing / removing position and the retreat position on the carriage;
A power supply device (28) and signal transmission means (27a, 27b) mounted on the cart;
On the truck, the flux supply opening is opened via opening / closing means in response to a control signal supplied from the power supply device and given from the signal transmission means, and the crusher and the scraper are opened via driving means. Control means (20) for driving the motor to the retracted position; and
A commanding means (MCB) separated from the trolley for providing the control signal to the control means via the signal transmission means when the trolley is at the first position (standby position);
(FIGS. 1 to 4). In addition, in order to facilitate understanding, symbols or corresponding items of the corresponding elements of the embodiments shown in the drawings and described later are added for reference in parentheses.
[0009]
According to this, the command means (MCB) gives a control signal to the control means (20) via the signal transmission means (27a, 27b) when the bogie (1) is at the first position (standby position). In response to the control signal, the control means (20) opens the flux supply opening (5a) through the opening / closing means (6, 17), and the crusher and the scraper through the driving means (15, A1 to A4). To the retracted position. Therefore, when the truck (1) is at the first position (standby position), the flux supply opening (5a) is automatically opened, and the crushing tool and the scraper move to the retreat position. In this state, when the trolley (1) is driven along the upper surface of the backing copper plate (3) in a direction (forward direction) away from the first position (standby position), the flux of the hopper (5) is opened ( The flux flows down through 5a) to the upper surface of the backing copper plate (3), and the flux rides on the upper surface of the backing copper plate (3). When the truck (1) is at the first position (standby position), the flux supply opening (5a) is opened, the crusher and the scraper are driven to the retreat position, and the truck moves away from the first position (standby position). This state may be maintained as it is during (outbound movement), and power for this purpose is unnecessary or can be covered by power supply from the power supply (28) on the trolley. During the movement, there is no need to supply power to the truck (1) from the ground side or transmit control signals from the command means (MCB) .Therefore, electric cables must be laid along the backing copper plate (3). Rerouting is omitted.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
(2) In addition to the above (1), a position detecting means (19) for detecting arrival of the bogie (1) at the second position (end of flux application) is provided on the bogie (1); In response to the detection of the arrival of the second position by the position detecting means (19), the flux supply opening (5a) is closed via the opening / closing means (6, 17), and the driving means (15, A1 to A4) The crushing tool and the scraper are driven to the slag crushing and removing position via (FIG. 4).
[0011]
According to this, when the trolley (2) reaches the second position (the end point of the flux scatter) during the flux scatter movement (outward movement) of the trolley (1), the flux supply opening (5a) is closed, and the crusher and the scraper are spread. − The slag is moved to the slag crushing and removing position. The flux spreading movement (forward movement) of the trolley (1) is stopped, the open tip of the two steel plates is placed on the flux on the backing copper plate (3), and the single-sided sub-mark welding is performed. After the finished steel sheet is unloaded, the trolley (1) moves (returns) toward the first position (standby position), and the slag generated on the upper surface of the backing copper plate (3) by welding breaks the crusher (30). ) And is removed from the upper surface of the backing copper plate (3) together with the residual flux by the scraper (7).
[0012]
The position detecting means (19) is on the trolley (1), is supplied with power from the power supply device (28) on the trolley, detects the arrival at the second position (the end point of flux application), and controls the trolley (1). 20), the opening / closing means (6, 17) and the driving means (15, A1 to A4) are supplied with power from the power supply device (28), close the flux supply opening (5a), and slag the crusher and the scraper. Since it is driven to the crushing and elimination positions, it is not necessary to supply power and control signals for performing such switching from the ground side, and from the second position (the end point of flux application) to the first position (the standby position). ) May be maintained as it is during the movement of the trolley to the trolley (backward movement), and power for this purpose is unnecessary or can be covered by power supply from the power supply unit (28) on the trolley. During slag crushing and removal movement (return movement), power supply from the ground side to the truck (1) and control signals from the command means (MCB) Transmission is not required, and thus the electrical Ke - or to turn pulling or laid along the backing copper plate (3) Bull becomes optional.
[0013]
(3) The present invention relates to a truck (1) running along the upper surface of the backing copper plate (3) in a direction in which the backing copper plate (3) extends, and a hopper mounted on the truck to spray welding flux on the upper surface of the backing copper plate. (5), welding with a crusher (30) for crushing slag generated on the upper surface of the backing copper plate by welding, and a scraper (7) for removing slag from the upper surface of the backing copper plate In flux spraying and recovery equipment,
Opening / closing means (6, 17) for opening and closing an opening (5a) for supplying a flux to an upper surface of a backing copper plate of the hopper on the carriage;
Drive means (15, A1 to A4) for driving the crushing tool and the scraper to the slag crushing / removing position and the retreat position on the carriage;
A power supply device (28) and signal transmission means (27a, 27b) mounted on the cart;
In response to a control signal supplied from the power supply device and supplied from the signal transmission means, the flux supply opening is closed via opening / closing means and the crusher and the scraper are driven via driving means. Control means (20) for driving to a slag crushing and removing position; and
A commanding means (MCB) separated from the trolley for providing the control signal to the control means via the signal transmission means when the trolley is at the first position (standby position);
(FIG. 5).
[0014]
According to this, the command means (MCB) gives a control signal to the control means (20) via the signal transmission means (27a, 27b) when the bogie (1) is at the first position (standby position). In response to the control signal, the control means (20) closes the flux supply opening (5a) through the opening / closing means (6, 17), and the crusher and the scraper through the driving means (15, A1-A4). Is driven to the slag crushing and removal position.
[0015]
Therefore, when the truck (1) is at the first position (standby position), the flux supply opening (5a) is automatically closed, and the crushing tool and the scraper are moved to the slag crushing and removing position. In this state, when the carriage (1) is driven along the upper surface of the backing copper plate (3) in a direction (forward direction) away from the first position (standby position), the backing copper plate (3) is welded. The slag generated on the upper surface is crushed by the crusher (30), and is removed from the upper surface of the backing copper plate (3) together with the residual flux by the scraper (7).
[0016]
When the truck (1) is at the first position (standby position), the flux supply opening (5a) is closed, and the crushing tool and the scraper are driven to the slag crushing / elimination position, and from the first position (standby position). This state may be maintained as long as the trolley moves away (forward movement), and power for this purpose is unnecessary or can be supplied by the power supply (28) on the trolley, and the slag crushing of the trolley (1) is performed. During the exclusion movement (outbound movement), it is not necessary to supply power to the cart (1) from the ground side or transmit control signals from the command means (MCB), and therefore the electric cable must be attached to the backing copper plate (3). Laying and routing along the space is omitted.
[0017]
(4) In addition to the above (3), a position detecting means (19) for detecting arrival of the truck at a second position (a flux spreading start point) is provided on the truck (1); In response to the detection of the arrival of the second position by the position detecting means, the flux supply opening (5a) is opened through the opening / closing means (6, 17) and the crushing tool and the crushing tool are opened through the driving means (15, A1 to A4). The scraper is driven to the retracted position (FIG. 5).
[0018]
According to this, when the trolley (2) reaches the second position (the flux spraying start point) during the slag crushing and removing movement (outward movement) of the trolley (1), the flux supply opening (5a) is opened, and the crushing tool is opened. And the scraper moves to the retracted position. The slag crushing and removal movement (outward movement) of the cart (1) is stopped, and the cart (1) moves along the upper surface of the backing copper plate (3) from the second position (the starting point of flux application) to the first position ( When driven in the direction (return direction) toward (standby position), the flux of the hopper (5) flows down to the upper surface of the backing copper plate (3) through the opening (5a), and the flux of the backing copper plate (3) Flux is on the upper surface. When the truck (1) reaches the first position (standby position), the flux spreading movement (return movement) of the truck (1) stops. Thereafter, the open tip of the two steel plates is placed on the flux on the backing copper plate (3), and single-sided sub-mark welding is performed.
[0019]
The position detecting means (19) is on the trolley (1), is supplied with power from the power supply device (28) on the trolley, detects arrival at the second position (the flux spreading start point), and controls the trolley (1). 20), the opening / closing means (6, 17) and the driving means (15, A1 to A4) are supplied with power from the power supply (28) to open the flux supply opening (5a) and to retract the crushing tool and the scraper. Since it is driven to the position, it is not necessary to supply power and control signals for performing such switching from the ground side, and from the second position (starting point of flux application) to the first position (standby position). This state may be maintained during the movement of the carriage (return movement), and for this purpose, no electric power is required or the power can be supplied by the power supply device (28) on the carriage. During (return), there is no need to supply power to the truck (1) from the ground side or transmit control signals from the command means (MCB). There, therefore electric Ke - the omission or to turn pulling or laying table along the backing copper plate (3).
[0020]
(5) The power supply device (28) is a battery; the signal transmission means (27a, 27b) controls the command connected to the command means (MCB) when the carriage (1) is at the first position (standby position). The bogie-side connectors (27a, 27b) connected to the side connectors (27ra, 27rb) (FIGS. 4, 5).
[0021]
According to this, the control means (20) on the trolley (1) is connected to the command means (MCB) by connector connection when the trolley (1) is at the first position (standby position).
[0022]
(6) It further comprises a screw conveyor (29a, 29b) separated from the carriage (1), which receives the slag removed by the scraper (7) and extends in the direction in which it extends along the backing copper plate (3). .
[0023]
According to this, the slag removed by the scraper (7) is conveyed by the screw conveyors (29a, 29b) in the direction in which it extends along the copper plate (3). No collection hopper is required on the trolley (1), and the trolley (1) is of small size. The screw conveyors (29a, 29b) can be much smaller in cross section cut across the copper plate (3) than a similar cross section of the recovery hopper. Even when a groove is cut on the floor and a screw conveyor is installed there, the cross-section of the groove is small and the groove construction for collecting slag and residual flux is unnecessary. Or it is small and easy to construct.
[0024]
Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.
[0025]
【Example】
-1st Example-
FIG. 1 shows a first embodiment of the present invention. The bogie frame 1 is equipped with wheels 2a to 2d, and these wheels 2a to 2d ride on rails 4a and 4b on both sides of a horizontally disposed backing copper plate 3. A chain (not shown) is disposed in parallel with the rails 4a and 4b, and the chain is driven forward by a drive mechanism (not shown) mainly composed of an electric motor, so that the bogie frame 1 moves forward (flux spreading traveling) to the left. Then, when the chain is driven backward, the bogie frame 1 moves backward (slag crushing, collection traveling) to the right.
[0026]
A hopper 5 for supplying a flux is mounted on the bogie frame 1. The bottom plate of the hopper 5 is provided with a slit opening 5a for supplying a flux, and the hopper shutter 6 which is in contact with the lower surface of the bottom plate 5 has oblong openings 6a to 6c. The joint 6 d of the hopper shutter 6 is connected to the electric drive 17. The electric drive 17 includes a nut, a screw rod screwed to the nut, a speed reducer for rotating the nut, and an electric motor 17m (FIG. 4) for rotating the input shaft of the speed reducer. 6 is connected to the threaded rod, the hopper shutter 6 is driven to open (driving from left to right in FIG. 1) by forward rotation of the electric motor 17m, and reversely rotated by the electric motor 17m. The hopper shutter 6 is driven to close (drive from right to left in FIG. 1).
[0027]
The normally open switch 18a is closed when one set of openings 6a of the hopper shutter 6 is aligned with the bottom opening 5a of the hopper 5, and is normally opened when the second set of openings 6b is aligned with the opening 5a. The normally open switch 18c is closed when the opening 18b is closed and the third set of openings 6c is aligned with the opening 5a, and the shutter 6 is on the left, and the left limit position where all of the openings 6a to 6c are out of the opening 5a. At this time, the normally open switch 18d is closed. These switches 18a to 18d are provided for detecting a shutter position.
[0028]
When the electric motor 17m of the electric drive 17 is driven forward (shutter open) when the shutter 6 is at the left limit position (the switch 18d is closed), the shutter 6 moves to the right, and first, the oval opening. 6c is aligned with the slit opening 5a as shown in FIG. 1, and the switch 18c is switched from open to closed. In this state, the flux in the popper 5 falls on the upper surface of the backing copper plate 3 through the elongated opening 6c. When the hopper shutter 6 is further moved rightward, the oval opening 6b is aligned with the slit 5a, and the switch 18b is switched from open to closed. When the switch 18a is further moved to the right, the switch 18a is switched from open to closed with the oval opening 6a aligned with the slit 5a. Which position of the upper surface of the backing copper plate 3 in the direction crossing the copper plate is determined depending on which of the oblong openings 6a to 6c is aligned with the slit 5a.
[0029]
To the right of the hopper 5 is a copying table 9. FIG. 2 shows an enlarged portion of the copying table 9. FIG. 2 is an enlarged side view showing around 9 parts of the copying table, and shows a cross section of the scraper 7 and the brush 8 taken along a center line extending in the longitudinal direction (lateral direction) of the backing copper plate 3. Referring to FIGS. 1 and 2, a scraper 7 and a brush 8 (FIG. 2) are mounted on a copying table 9. The crushing tool 30 is connected to the copying table 9 by link mechanisms (11 to 14, A1 to A4). A copying roller 10 (FIG. 2) is rotatably supported by the copying table 9, and when the copying table 9 is at the slag crushing and collecting position shown in FIG. The rider rides on the upper surface, and the scrapers 7 and the brushes 8 constantly hit the upper surface of the copper plate 3 even while traveling to the right along the upper surface of the backing copper plate 3. At this time, the copying table 9 is at the slag crushing and collecting position. In this case, the copying table 9 and the crushing tool 30 are connected only by the link arm 12 of the link mechanism (11 to 14, A1 to A4). Thus, the copying table 9 can be moved up and down, and the crushing tool 30 does not hinder the copper sheet copying movement of the copying table 9, and both the copying table 9 and the crushing tool 30 move along with the bogie frame 1 to the right. Towed by
[0030]
FIG. 3 shows an enlarged front view of the crusher 30 viewed from the right end in FIG. Referring to FIG. 2 and FIG. 3, lifting rods 22a and 22b are attached to the base 21 of the crushing tool 30 so as to be able to move up and down (however, there are upper and lower limits), and penetrate the coil springs 24a and 24b. I have. Support legs 23a and 23b are fixed to lower ends of the lifting rods 22a and 22b. The shaft body 25 is fixed to the support legs 23a and 23b. There are three types of ratchet wheels 26a to 26c (a total of 12) between the supporting legs 23a and 23b, and the shaft 25 passes through the center hole of these ratchets. It is freely rotatable. As clearly shown in FIG. 3, the cross-sectional shape of the backing copper plate 3 is substantially mountain-shaped, and each of the ratchet wheels 26 a to 26 c follows the upper surface of the backing copper plate 3 to rotate accordingly. The size (diameter) of the ratchet wheels 26a to 26c is determined.
[0031]
The arm 11 is fixed to the base 21, and the arm 11 is rotatably connected to the towing leg 15. 2 and 3, the crushing tool 30 is pressed by the arm 11. The lifting rods 22a and 22b are substantially vertical, the teeth of the ratchets 26a to 26c hit the upper surface of the backing copper plate 3, and the coil springs 24a and 24b are considerably compressed (slag crushing position). At this time, as described above, the scraper 7 and the brush 8 are positioned at the slag crushing and collecting positions by the link mechanisms (11 to 14, A1 to A4).
[0032]
The electric drive 15 lifts the copying table 9 and the crushing tool 30 via the link mechanism (11 to 14, A1 to A4) from the “slag crushing and collecting position” (FIG. 2), and the copying table 9 is lifted to be a scraper. 7, the brush 8 and the copying roller 10 move upward away from the backing copper plate 3, and the crushing tool 30 rotates counterclockwise about the axis A4 (FIG. 2), so that the ratchet wheels 26a to 26c It is driven to the "retreat position" that has moved upward away from the backing copper plate 3, and is driven in the opposite direction.
[0033]
The electric drive 15 includes a nut, a threaded bar screwed to the nut, a speed reducer for rotating the nut, and an electric motor 15m (FIG. 4) for rotating the input shaft of the speed reducer. The free ends of the rotating arms 13 (11 to 14, A1 to A4) are connected to the threaded rod. The rotating arm 13 is fixed to a support shaft A1 whose position is fixed.
[0034]
By the reverse rotation of the electric motor 15m, the screw rod is protruded to the left, and the arm 13 rotates counterclockwise in FIG. 2, and likewise, the lifting shaft fixed to the support shaft A1 and the shaft A1. The levers 14a and 14b rotate counterclockwise. The pull-up lever 14a hits the axis A2 by rotating counterclockwise and lifts it while supporting it downward. At this time, a pushing force acting rightward in FIG. 2 acts on the copying table 9 via the axis A2, and the arm 12 rotates clockwise around the axis A4 whose position is fixed, and rotates via the axis A3. The right end side of the copying table 9 rises. Thus, the copying table 9 rises while substantially maintaining the horizontal posture (FIG. 2). On the other hand, the crushing tool 30 is rotated counterclockwise about the axis A1 by the pulling lever 14b so that the crushing tool 30 flips the ratchet wheels 26a to 26c obliquely rightward upward in FIG. Rotate counterclockwise around. When the free end of the pull-up lever 14a enters the detection field of view of the reflection type optical sensor 16b (when the tip of 14a rotates to a position facing the sensor 16b), the detection signal of the optical sensor 16b changes from low level L. It becomes high level H. At this time, the reverse rotation drive of the electric motor 15m is stopped, and the position (not shown) of the copying table 9 and the crushing tool 30 at this time is the "retreat position".
[0035]
When the electric motor 15m is driven to rotate forward when in the "retreat position", the screw rod moves to the right, the arm 13 rotates clockwise, and the pull-up levers 14a, 14b also rotate clockwise. By the rotation, the copying table 9 descends, and the crushing tool 30 rotates clockwise about the axis A4. Finally, as shown in FIG. 2, the copying table 9 is supported by the backing copper plate and the claws of the crushing tool 30 are caught. The compression coil springs 24a are compressed by the wheels 26a to 26c hitting the backing copper plate. After the lifting lever 14a is separated from the axis A2, the reflection plate 13r has an angle at which the light projected by the reflection type optical sensor 16a is reflected toward the optical sensor 16a as shown in FIG. The detection signal 16a changes from the low level L to the high level H. At this time, the forward rotation of the electric motor 15m is stopped, and the position of the copying table 9 and the crushing tool 30 (FIG. 2) at this time is the "slag crushing and collecting position". The scraper 7 and the brush 8 have a lower end in the shape of a "<"-shaped plow corresponding to two oblique sides of an isosceles triangle, and the apex of the triangle is on the center line of the backing copper plate 3. As a result, when the scraper 7 and the brush 8 move to the right in FIG. 1, the residual flux and the slag that have hit the scraper 7 and the brush 8 move along the scraper 7 toward both side surfaces of the backing copper plate 3. The scraper 7 is slightly inclined to the left to easily separate the slag (FIG. 2).
[0036]
Screw conveyors 29a and 29b (FIG. 1) for recovering flux are laid outside the rails 4a and 4b of the backing copper plate 3, and the residual flux and slag hitting the scraper 7 and the brush 8 are removed by the scraper. It moves toward both side edges of the backing copper plate 3 along the brush 7 and the brush 8, and falls on the screw conveyors 29a and 29b. The dropped residual flux and slag are transported by a screw conveyor 29a, 29b to a collection box (not shown) at one end of the conveyor 29.
[0037]
FIG. 1 is referred to again. When the left end of the bogie frame 1 is expressed as a front end and the right end is expressed as a rear end in FIG. 1, a battery 28 and an on-board control circuit 20 are mounted on the front end of the bogie frame 1. On-board connectors 27a and 27b are mounted on the rear end of the bogie frame 1, and the contacts of these connectors are electrically connected to the on-board control circuit 20. An infrared sensor 19 is installed near the connector 27a with its light receiving surface facing upward, and the sensor 19 is also electrically connected to the on-board control circuit 20. The normally open switches 18a to 18d already described and the sensors 16a and 16b shown in FIG. 2 are also electrically connected to the on-board control circuit 20. The on-board connectors 27a and 27b are mounted on the trolley 1 at positions and orientations at which the trolley 1 runs rightward at the end point of rightward travel of the trolley 1 to be coupled with command side connectors 27ra and 27rb (FIG. 4) installed at standby positions on the ground. .
[0038]
FIG. 4 shows a configuration of the on-board control circuit 20. Command-side connectors 27ra and 27rb are installed at the bogie standby position on the ground, and the contacts of these connectors are connected to the ground-side control board MCB. When the bogie 1 reaches the standby position by traveling rightward and the on-board connectors 27a and 27b are connected to the command-side connectors 27ra and 27rb, the charging circuit CRC is connected to the ground-side power supply (commercial AC) by this connection, and The battery 28 is charged. The power supply circuit PSC supplies the voltage of the battery 28 as a power voltage to the motor drivers 15d and 17d, generates a constant control voltage, and provides the control circuit 20 and the optical sensors 16a, 16b and 19 with each other. The detection signals from the normally open switches 18a to 18d and the optical sensors 16a and 16b are given to the control board MCB via the connectors 27b and 27rb.
[0039]
The control board MCB gives forward and reverse rotation instructions to the motor driver 17d via the connectors 27ra and 27a in response to an operator's command, and refers to the detection signals of the switches 18a to 18d to open the opening 5a of the hopper 5. Is opened or closed by the shutter openings 6a to 6c. In addition, in response to a command from the operator, the vehicle 1 drives the left running drive (forward drive), the right running drive (return drive), and drives the screw conveyor.
[0040]
Flux spray setting:
When the bogie 1 is in the standby position and the on-board connectors 27a and 27b are connected to the command-side connectors 27ra and 27rb, the operator places a flux distribution position (any of the openings 6a to 6c) on the control panel MCB. 5a), the control panel MCB refers to the signals of the switches 18a to 18d and closes the switch (18a) corresponding to the flux spraying position designation (for example, designation of the opening 6a to match the opening 5a). When the switch (18a) is closed, driving of the motor 17m is stopped and the set flux distribution position is displayed.
[0041]
When the switch (18a) is closed, the output of the OR gate R3 of the on-board control circuit 20 becomes a high level H (when the switch 18a is closed, the output of the inverter IN connected thereto becomes H). At this time, if the copying table 9 and the crushing tool 30 are not at the "retreat position", the output of the optical sensor 16b is at the low level L, and the output of the AND gate N3 becomes H, and the flip-flop F2 is set. The Q output becomes a high level H (instruction to drive the motor 15m in reverse). In response to the high level H, the motor driver 15d reversely drives the electric motor 15m. Thereby, the copying table 9 and the crushing tool 30 move to the “evacuation position”.
[0042]
When reaching the "retreat position", the optical sensor 16b detects the pull-up lever 14a, and its output switches from a low level L to a high level H (indicating the "retreat position"). Then, the output of the AND gate N4 becomes H level, resetting the flip-flop F2. By this reset, the Q output of the flip-flop F2 is switched to the low level L (instruction to stop the reverse rotation driving), and the motor driver 15d stops the reverse rotation driving of the electric motor 15m.
[0043]
The control panel MCB starts the forward drive (leftward drive) of the carriage 1 when the operator instructs the flux spraying travel.
[0044]
Flux spraying:
When the carriage 1 moves forward (moves leftward), the welding flux in the hopper 5 falls on the backing copper plate 3 through the slit 5a and the elongated opening (6a), and the scraping plate 32 (FIG. 2) The uniform thick layer is formed.
[0045]
Slag crushing and collection settings:
After passing through the required spraying area (weld portion of the welding member), the infrared sensor 19 reaches directly below an infrared projector (not shown) suspended from the ceiling, and the output of the sensor circuit 19d connected to the sensor 19 becomes low level L (infrared non- (Detection) to a high level H (infrared ray detection: reaching the reversal position).
[0046]
Then, the output of the AND gate N1 of the on-vehicle control circuit 20 becomes H, and the Q output of the flip-flop F1 is inverted from L to H (instructing the reverse rotation driving of the motor 17m). The H is supplied to the motor driver 17d through the OR gate R2, and the motor driver 17d drives the electric motor 17m in reverse in response to the H. The shutter 6 moves to the left by the reverse rotation of the electric motor 17m. When the shutter 6 reaches the left limit position (the opening 5a is fully closed), the normally open switch 18d is closed, and the output of the inverter IN connected thereto is switched from L to H. As a result of this H, the output of the AND gate N2 becomes H, the flip-flop F2 is reset, and its Q output becomes L (stopping reverse driving of the motor). -Stop the reverse drive of the motor 17m.
[0047]
On the other hand, when the normally open switch 18d is closed as described above, the output of the AND gate N5 becomes H, and the Q output of the flip-flop F3 changes from L to H (instructs the electric motor 15m to perform normal rotation drive). ), And the motor driver 15d drives the electric motor 17m forward in response to this H. The forward rotation of the electric motor 15m moves the copying table 9 and the crushing tool 30 to the "slag crushing and collecting position". When the light reaches the “slag crushing and collecting position”, the reflected light of the light reflector 13r enters the optical sensor 16a, and the output is switched from a low level L to a high level H (indicating the “slag crushing and collecting position”). Then, the output of the AND gate N6 becomes high level H, resetting the flip-flop F3. With this reset, the Q output of the flip-flop F3 is switched to the low level L (instruction to stop the normal rotation drive), and the motor driver 15d stops the normal rotation drive of the electric motor 15m.
[0048]
An infrared projector for vertically projecting infrared rays for notifying the infrared sensor 19 of arrival at the reversal position is ceiling-supported by a support (not shown) for detecting the arrival of the carriage 1 and reflected infrared rays from around the infrared sensor 19. There is a bogie sensor that recognizes the bogie, and the bogie detection signal of this bogie sensor is given to the control board MCB, and the control board MCB continues the forward drive for a predetermined distance (evacuation distance) after the bogie detection signal arrives. After that, the forward drive of the carriage 1 is stopped. In addition, in the forward drive (rightward drive) after stopping the spraying of the flux for the predetermined distance (evacuation distance), the bogie 1 is placed on the backing copper plate 3 of the steel plate to be welded, and the next welding and after welding. The carriage 1 is evacuated to a position where there is no problem in carrying out the steel sheet.
[0049]
Slag crushing and recovery:
When a steel plate to be welded is placed on the backing copper plate 3, welding is performed, and the steel plate after welding is carried out, the operator instructs the control panel MCB to slag crush and recover (return to the standby position). In response to this, the control board MCB drives the screw conveyors 29a and 29b to drive the carriage 1 backward (to the right). At this time, since the opening 5a of the hopper 5 is closed, there is no supply of the flux from the carriage 1 to the backing copper plate 3. Since the copying table 9 and the crushing tool 30 are at the “slag crushing and collecting position”, the crawler wheels 26 a to 26 c of the crushing tool 30 crush the slag on the upper surface of the backing copper plate 3 with the return movement of the cart 1. The scraper 7 raises the slag and pushes the slag toward the side edge of the backing copper plate 3, and the brush 8 sweeps the upper surface of the copper plate 3 to direct slag particles, powder, and residual flux toward the side edge of the backing copper plate 3. Push. Slugs and the like fall from the side ends onto the screw conveyors 29a and 29b, and are conveyed by the screw conveyors 29a and 29b to a collection box (not shown) at one end of the conveyor 29.
[0050]
Stop at standby position:
In the immediate vicinity of the standby position, there is a bogie sensor for detecting the return of the bogie 1. When the bogie sensor detects the bogie, the control board MCB decelerates the return drive of the bogie 1 to an extremely low speed, and drives the screw conveyors 29a and 29b. To stop. When the equipment ground potential contacts of the connectors 27ra and 27rb reach the equipment contact potential (when the on-board connectors 27a and 27b are connected to the command side connectors 27ra and 27rb), the carriage 1 stops driving again.
[0051]
-Modification of the first embodiment-
In the above-described embodiment, the on-board connectors 27a and 27b are automatically connected to the command side connectors 27ar and 27br when the carriage 1 reaches the standby position by moving rightward. In the modified example, it is assumed that the command side connectors 27ar and 27br are connected to the tip of an electric cable connected to the control board MCB.
[0052]
In this case, the operator operates the forward / backward drive instructing rod of the control board MCB to instruct the control board MCB to go forward, backward, and stop the carriage 1. That is, the operator monitors the position of the carriage 1 and remotely controls the carriage 1. Then, the backward drive of the carriage 1 is stopped at the start end (standby position side) of the flux spraying required area before the standby position, and the operator then connects the command side connectors 27ar, 27br to the onboard connector upper connectors 27a, 27b. Join. According to this modification, the flux spraying start point can be set to the start point of the flux spraying required area before the standby position, and useless flux spraying (flux spraying from the standby position in the first embodiment) (Spray to the beginning of the area) is eliminated.
[0053]
In addition, a bogie sensor provided on a support of the ceiling-mounted infrared projector that projects infrared rays to the infrared sensor 19 is omitted, and the operator monitors the traveling of the bogie 1 and uses the ceiling-mounted infrared projector. , The forward drive of the bogie may be stopped by a command from the operator (operation of the control board MCB) at a place where the vehicle has traveled a desired distance after passing through (after stopping the flux application).
[0054]
In this modified example, an operator monitors the truck 1 and remotely controls it via the control board MCB, and drives the truck 1 again at a desired position (a flux spraying start position) before the standby position. When stopped, the connectors 27ra and 27rb need to be connected to the connectors 27a and 27b. However, the operator can arbitrarily determine the stop position of the forward drive and the return drive of the bogie 1, and the position of the entire length of the backing copper plate 3 can be determined. The operator has a high degree of freedom as to whether to determine the region (1) as a welding (flux distribution region).
[0055]
-2nd Example-
In the first embodiment described above, the hopper 5 is located at the tip end of the bogie frame 1. The copying table 9 and the crushing tool 30 are provided on the rear end side, and these are in a posture of performing slag crushing and recovery by the backward drive (move to the right) of the carriage 1. At the standby position, the opening 5a is opened for spraying the flux and the copying table 9 and the crushing tool 30 are set to the "retreat position" in accordance with an instruction from the control panel MCB. At the time of welding the steel sheet, the trolley 1 is placed at the reverse position opposite to the standby position, and the end of welding (transportation of the welded steel sheet) is waited.
[0056]
In the second embodiment, a copying platform 9 and a crushing tool 30 are provided at the leading end side of the bogie frame 1, and these are in a posture in which slag is crushed and collected by the forward drive (leftward movement) of the bogie 1. A hopper 5 is provided at the rear end side of the bogie frame 1. At the standby position, the opening 5a is closed for slag crushing and recovery according to an instruction from the control panel MCB, and the copying table 9 and the crushing tool 30 are "slag". Crushing and collection position ". At the time of steel plate welding, the trolley 1 is placed at the standby position and the end of welding (transportation of the welded steel plate) is waited.
[0057]
In the mechanical structure of the second embodiment, as described above, the copying platform 9 and the crushing tool 30 are provided at the leading end side of the bogie frame 1, and these are slag crushed and collected by the forward drive (leftward movement) of the bogie 1. Are the same as those in the first embodiment, except that they are in the posture of performing the above operation, and that the hopper 5 is provided on the rear end side of the bogie frame 1, so that illustration and description are omitted. .
[0058]
FIG. 5 shows the configuration of the on-board control circuit 20 of the second embodiment.
Flux spraying position designation:
When the bogie 1 is in the standby position and the on-board connectors 27a and 27b are connected to the command-side connectors 27ra and 27rb, the operator places a flux distribution position (any of the openings 6a to 6c) on the control panel MCB. 5a), the control board MCB transfers the position data to the latches La to Lc of the on-board control circuit 20 and latches (stores) the data (designating the flux distribution position). When the spraying position is specified so that the opening 6a is aligned with the opening 5a, the storage data (1 bit) of the latch La is at a high level H, and the storage data of the latches Lb and Lc is at a low level L.
[0059]
Slag crushing and collection settings:
When the operator instructs the slag crushing and collection setting to the control board MCB, the control board MCB refers to the signals of the switches 18a to 18d and sends a motor drive command for closing the switch 18d to the motor driver 17d. When the switch 18d is closed, the driving of the motor 17m is stopped at that point, and the display of the suspension of the flux application is displayed.
[0060]
At this time, if the copying table 9 and the crushing tool 30 are not at the "slag crushing / recovering position", when the switch 18d is closed and the output of the inverter IN connected thereto becomes high level H, the vehicle The output of the AND gate N3 of the upper control circuit 20 becomes H and the output of the flip-flop F2 becomes H. In response to this, the motor driver 15d drives the motor 15m forward. As a result, when the copying table 9 and the crushing tool 30 reach the "slag crushing and collecting position", the optical sensor 16a detects the pull-up lever 14a, and the output is inverted from L to H. Then, the output of the AND gate N4 becomes H, the flip-flop F2 is reset, and the forward driving of the motor 15m stops.
[0061]
Slag crushing and recovery:
When the operator instructs slag crushing and recovery (forward driving of the trolley 1), the control panel MCB starts the forward driving of the trolley 1 and drives the screw conveyors 29a and 29b. At this time, since the opening 5a of the hopper 5 is closed, there is no supply of the flux from the carriage 1 to the backing copper plate 3. Since the copying table 9 and the crushing tool 30 are located at the “slag crushing and collecting position”, the crawler wheels 26 a to 26 c of the crushing tool 30 are moved to the upper surface of the backing copper plate 3 as the bogie 1 moves forward (travels to the left). The slag is crushed, and the scraper 7 raises the slag and pushes the slag toward the side edge of the backing copper plate 3. Push toward the side edge. Slugs and the like fall from the side ends onto the screw conveyors 29a and 29b, and are conveyed by the screw conveyors 29a and 29b to a collection box (not shown) at one end of the conveyor 29.
[0062]
Flux spray setting:
After passing through the required area for slag crushing and recovery, the infrared sensor 19 reaches just below the ceiling-mounted infrared projector, and the output of the sensor circuit 19d connected to the sensor 19 changes from low level L (no infrared detection) to high level. H (infrared ray detection: reaching the reversal position). In response, the output of AND gate N5 of on-vehicle control circuit 20 goes high, flip-flop F3 is set and its Q output goes high, and in response to this H, motor driver 15d drives the motor. 15m is driven reversely. As a result, when the copying table 9 and the crushing tool 30 move to the "retreat position", the output of the optical sensor 16b is inverted from L to H, whereby the output of the AND gate N6 becomes H and the flip-flop F3 is reset. As a result, the Q output becomes L, and the motor driver 15d stops the reverse driving of the motor 15m.
[0063]
On the other hand, when the output of the sensor circuit 19d connected to the sensor 19 is switched to the high level H (infrared ray detection: reaching the reversal position), the switch 18d is closed and the output of the inverter IN connected to it is H. The output of AND gate N1 is inverted from L to H, flip-flop F1 is set and its Q output goes to H, and motor driver 17d responds to this to drive motor 17m forward. The position data set in the latches La to Lc (for example, designation of the opening 6a to be aligned with the opening 5a: designation of the closing of the switch 18a) and output data of the inverter IN represented by opening and closing of the switches 18a to 18c. And the output of the gates Na to Nc (Na among them) becomes H and the output of the gate R1 becomes H, whereby the output of the AND gate N2 becomes high. The signal becomes H, the flip-flop F1 is reset, the Q output thereof becomes L, and the motor driver 17d stops the forward driving of the motor 17m.
[0064]
In addition, a support (not shown) that suspends an infrared projector for vertically projecting infrared light for notifying the infrared sensor 19 of arrival at the inversion position, the arrival of the carriage 1 and the reflected infrared light from around the infrared sensor 19. There is a bogie sensor that recognizes by detecting the bogie sensor, and a bogie detection signal of the bogie sensor is given to the control board MCB, and the control board MCB stops the forward drive of the bogie 1 in response to the bogie detection signal. Then, the driving of the screw conveyors 29a and 29b is stopped.
[0065]
Flux spraying:
Subsequently, the control board MCB starts the backward drive (rightward drive) of the carriage 1. When the carriage 1 moves backward (moves rightward), the welding flux in the hopper 5 falls on the backing copper plate 3 through the slit 5a and the elongated opening (6a), and the scraping plate 32 becomes uniform in thickness. Layer it.
[0066]
Stop at standby position:
In the immediate vicinity of the standby position, there is a bogie sensor for detecting the return of the bogie 1. When the bogie sensor detects the bogie, the control board MCB decelerates the backward drive of the bogie 1 to an extremely low speed. When the equipment ground potential contacts of the connectors 27ra and 27rb reach the equipment contact potential (when the on-board connectors 27a and 27b are connected to the command side connectors 27ra and 27rb), the carriage 1 stops driving again.
[0067]
-Modification of the second embodiment-
Also in the above-described second embodiment, the on-board connectors 27a and 27b are automatically connected to the command side connectors 27ar and 27br when the bogie 1 moves to the right and reaches the standby position. In one modified example, the command side connectors 27ar and 27br are connected to the tip of an electric cable connected to the control panel MCB, as in the above-mentioned modified example of the first embodiment.
[0068]
Also in this case, the operator instructs the control board MCB to operate the forward / backward drive instructing rod of the control board MCB to control the forward / backward drive and stop of the carriage 1. That is, the operator monitors the position of the carriage 1 and remotely controls the carriage 1. Then, the reverse driving of the carriage 1 is stopped at the end of the required flux application area (standby position side) before the standby position, and the operator connects the command side connectors 27ar, 27br to the onboard connector upper connectors 27a, 27b. Join. According to this modification, it is possible to set the end point of the flux spraying required before the standby position to the end point of the flux spraying, and to waste the flux spraying (in the second embodiment, the flux spraying from the standby position to the flux spraying required time). (Dispersion to the end of the area) is eliminated.
[0069]
In addition, a bogie sensor provided on a support of the ceiling-mounted infrared projector that projects infrared rays to the infrared sensor 19 is omitted, and the operator monitors the traveling of the bogie 1 and uses the ceiling-mounted infrared projector. After passing through the vehicle (after stopping the slag crushing and collection), the forward drive of the bogie may be stopped by a command from the operator (operation of the control panel MCB).
[0070]
In this modification as well, the operator monitors the truck 1 and remotely controls it via the control board MCB, and also returns the truck 1 to the desired position (the end of the flux application) before the standby position. When stopped, the connectors 27ra and 27rb need to be connected to the connectors 27a and 27b. However, the operator can arbitrarily determine the stop position of the forward drive and the return drive of the bogie 1, and the position of the entire length of the backing copper plate 3 can be determined. The operator has a high degree of freedom as to whether to determine the region (1) as a welding (flux distribution region).
[0071]
−Deformation of details−
In each of the first and second embodiments and their modifications, the command side connectors 27ra and 27rb and the vehicle side connectors 27a and 27b are changed to an optical communication device, a radio wave communication device, and / or a sound wave communication device. The communication conditions may be set so that at least the control signal can be transmitted from the command side to the bogie when the bogie 1 is at the standby position and in the vicinity thereof. In this case, a charging connector for connecting the charging circuit CRC to a power supply on the ground is additionally provided. Alternatively, the charging circuit CRC is also omitted, and the battery 28 is charged or replaced in the same manner as a general automobile.
[0072]
In each of the first and second embodiments, the optical sensors 16a and 16b detect the arrival of the copying table 9 and the crushing tool 30 at the retracted position and the slag crushing / recovery position and detect the electric motor 15m. The electric drive 15 has a reverse rotation limit switch and a forward rotation limit switch therein, and the motor driver 15d provides a forward rotation limit to the forward rotation energizing circuit. A stroke end limit type electric drive unit (electric drive 15 + motor driver 15d) in which a normally closed contact of a switch is inserted in series and a normally closed contact of a reverse rotation limit switch is inserted in series in a reverse rotation energizing circuit. ), The optical sensors 16a and 16b, the flip-flops F2 and F3 and the AND gates N4 and N6 are omitted. It may be.
[0073]
Further, an infrared sensor 19 is provided on a carriage, which detects infrared rays from a ceiling-mounted infrared projector to recognize the reaching of the inversion position. You may make it recognize using it. For example, a steel plate panel to be welded is temporarily placed along the backing copper plate 3 without being placed on the copper plate 3, and a truck is driven to spray the flux. When the pre-welding work to be carried on the (upper flux) is always performed, the infrared sensor 19 is used as a proximity switch (for example, a magnetic field type steel plate sensor) for detecting a steel plate, and the detection signal of the proximity switch is not detected from the detection of the steel plate. When the detection is changed, it may be determined that the inversion position has been reached. In this aspect, when the truck goes out of the steel plate area, the flux spraying is automatically stopped.
[Brief description of the drawings]
FIG. 1 is a plan view of a truck for dispersing flux and collecting slag according to a first embodiment of the present invention.
FIG. 2 is an enlarged side view of the copying table 9 and the crushing tool 30 shown in FIG.
FIG. 3 is a front view of the crusher 30 shown in FIG.
FIG. 4 is a block diagram showing a functional configuration of the on-board control circuit 20 shown in FIG.
FIG. 5 is a block diagram showing a functional configuration of an on-vehicle control circuit 20 according to a second embodiment of the present invention.
[Explanation of symbols]
1: Bogie frame 2a-2d: Wheel
3: Backing copper plate 4a, 4b: Rail
5: Hopper 5a: Opening
6: shutter 6a-6c: shutter opening
6d: Joint 7: Scraper
8: Brush 9: Copy stand
10: Copying roller 11: Arm
12: Link arm 13: Rotating arm
14a, 14b: Pulling lever A1 to A4: Shaft
15: Electric drive 15m: Electric motor
16a, 16b: Optical sensor 17: Electric drive
17m: Electric motor 18a-18d: Normally open switch
19: Infrared sensor 20: On-board control circuit
21: base 22a, 22b: lifting rod
23a, 23b: support leg 24a, 24b: coil spring
25: Shaft 26a-26c: Claw wheel
27a, 27b: On-board connector 27ra, 27rb: Command side connector
28: Battery 29a, 29b: Screw conveyor
30: Crusher

Claims (6)

A trolley running along the upper surface of the backing copper plate in the direction in which the backing copper plate extends, a hopper mounted on the trolley and spraying welding flux on the upper surface of the backing copper plate, a slag generated on the upper surface of the backing copper plate by welding In a welding flux dispersing and collecting device comprising a crushing tool for crushing steel and a scraper for removing slag from the upper surface of the backing copper plate,
Opening / closing means for opening / closing an opening for supplying a flux to an upper surface of a backing copper plate of the hopper on the carriage;
Driving means for driving the crushing tool and the scraper on the trolley to a slag crushing / removing position and a retracting position;
A power supply device and signal transmission means mounted on the cart;
On the truck, in response to a control signal supplied from the power supply device and supplied from the signal transmitting means, a flux supply opening is opened via opening / closing means, and a crushing tool and a scraper are provided via driving means. Control means for driving the vehicle to the retracted position; and command means separated from the carriage, for providing the control signal to the control means via the signal transmission means when the carriage is at the first position;
A welding flux spraying and collecting device, comprising: Position detection means for detecting arrival of the truck at the second position is provided on the carriage; wherein the control means closes the flux supply opening via the opening / closing means in response to the position detection means detecting arrival at the second position. The welding flux dispersing and collecting apparatus according to claim 1, wherein the crushing tool and the scraper are driven to the slag crushing and removing position via the driving means. A trolley running along the upper surface of the backing copper plate in the direction in which the backing copper plate extends, a hopper mounted on the trolley and spraying welding flux on the upper surface of the backing copper plate, a slag generated on the upper surface of the backing copper plate by welding In a welding flux dispersing and collecting device comprising a crushing tool for crushing steel and a scraper for removing slag from the upper surface of the backing copper plate,
Opening / closing means for opening / closing an opening for supplying a flux to an upper surface of a backing copper plate of the hopper on the carriage;
Driving means for driving the crushing tool and the scraper on the trolley to a slag crushing / removing position and a retracting position;
A power supply device and signal transmission means mounted on the cart;
On the carriage, the flux supply opening is closed via opening / closing means in response to a control signal supplied from the power supply device and provided from the signal transmission means, and the crusher and the scraper are driven via driving means. Control means for driving the slag crushing and removal position; and
Commanding means separate from the trolley, providing the control signal to the control means via the signal transmission means when the trolley is in the first position;
A welding flux spraying and collecting device, comprising: Position detection means for detecting arrival of the truck at the second position is provided on the carriage; wherein the control means opens the flux supply opening via the opening / closing means in response to the detection of the position detection means reaching the second position. The welding flux dispersing and collecting apparatus according to claim 3, wherein the crushing tool and the scraper are driven to the retracted position via the driving means. The power supply device is a battery; the signal transmission means is a bogie-side connector connected to the command-side connector connected to the command means when the bogie is at the first position; The welding flux spraying and collecting device according to claim 3 or 4. The screw conveyor further comprising a backing copper plate, which extends in a direction in which the backing copper plate extends and receives a slug removed by the scraper, and is separate from a bogie. The welding flux spraying and collecting apparatus according to claim 4 or claim 5.

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