JP2010222088A - Welding wire rewinding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a welding wire rewinding method capable of efficiently controlling tension of a welding wire on an inlet side and an outlet side. <P>SOLUTION: In this welding wire rewinding method, the welding wire 5 delivered from a bobbin 3 is wound around a fixed side roller 12 and a moving side roller 13 of a dancer roller device 11, and subsequently the welding wire 5 is wound on a spool 7 having a smaller diameter than that of the bobbin 3. An inlet side wire catcher 21 and an outlet side wire catcher 22 for holding the traveling welding wire 5 are provided in the vicinity of the inlet side and the vicinity of the outlet side of the welding wire 5, respectively, in the dancer roller device 11. By operations of the wire catchers 21 and 22, tension of the welding wire 5 on the inlet side and the outlet side is controlled. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a welding wire rewinding method in which a welding wire wound around a bobbin is fed and wound on a spool having a smaller diameter than the bobbin.

  In a welding wire rewinding device that feeds a welding wire wound around a bobbin and winds it on a spool having a smaller diameter than the bobbin, a wire feeding machine on which the bobbin is set, and a welding wire fed from the bobbin A dancer roller device is disposed between the spool winder in which the winding spool is set. Such a dancer roller device functions to absorb the variation in length caused by the elongation between the wire feeding machine of the welding wire and the spool winder and to keep the tension of the welding wire within a predetermined range. It is. As a conventional dancer roller device, for example, a configuration disclosed in Patent Document 1 is known.

First, a dancer roller device according to Conventional Example 1 disclosed in Patent Document 1 will be described with reference to FIG. 5 of a side view of this dancer roller device. The dancer roller device 51 includes a fixed roller 55 provided on the upper portion of the roller tower 54 and a moving roller 56 provided on the lower portion of the fixed roller 55. The moving roller 56 is configured to slide and drop below the roller tower 54 by its own weight. The welding wire 52 is wound around a fixed roller 55 and a moving roller 56, and then sent in the direction of the arrow in the figure, and passes through a correction roller 58 and a cast roller 59, and a wire drum (not shown) or a spool (not shown). (Omitted) and the like.
In addition, the code | symbol 53 shown to a figure is a wire rod take-up machine, the code | symbol 54a is a slide rod, and the code | symbol 56a is the hollow slider formed by the said slide rod 54a being slidably fitted.

  Next, a dancer roller device according to Conventional Example 2 disclosed in Patent Document 1 will be described with reference to FIG. 6 (a) of its conceptual diagram and FIG. 6 (b) of its side view. . Reference numeral 61 shown in the drawing is a dancer roller device, and this dancer roller device 61 is obtained by changing the moving roller from the sliding method as in the conventional example 1 to the swinging method. That is, the fixed-side roller 65 is supported by a triangular roller support bracket formed on the right side of the dancer frame 61a in FIG. 6B. The moving roller 66 positioned below the fixed roller 65 is provided at one end of the arm 70 pivotally supported by a hinge 74 provided near the left corner of the dancer frame 61a. A swing buffer mechanism 67 described later is provided on the other end side of the arm 70.

  The swing buffer mechanism 67 has a balance weight 71 provided on the other end side of the arm 70, and a bottom side fixed to an appropriate portion of the dancer frame 61a. It is comprised from the air cylinder 72 which moves the roller 6 below. One end of a wire 75 is fastened to the tip of the rod of the balance weight 71, and the other end of the wire 75 is wound around a pulley 73 that rotates coaxially with the hinge 74. The swing buffer mechanism 67 suppresses the moving roller 66 that is about to move down in the direction of its own weight G with the first rotational moment W formed by the gravity of the balance weight 71, and to the first rotational moment W. The second rotational moment V in the opposing direction is formed by the tensile force of the air cylinder 72, and the restrained gravity drop force is supplemented elastically, and the movement of the moving roller 66 is adjusted to be smooth. To do. The welding wire 62 taken up by the wire take-up machine 63 is wound around the fixed side roller 65 and the moving side roller 66 and then sent in the direction of the arrow in the figure, and passes through the correction roller 68 and a cast roller not shown, It is designed to be wound on a spool.

  According to the dancer roller device according to the second conventional example, unlike the moving roller of the dancer roller device according to the first conventional example, the moving roller 6 is quickly lowered by its own weight because it is not restrained by a slide rod or the like. try to. However, the swing buffer mechanism 7 prevents the moving roller 6 from dropping rapidly, so that excessive tension is not applied to the welding wire.

Japanese Utility Model Publication No. 58-060657

  According to the dancer roller devices according to the conventional examples 1 and 2, the speed synchronization of the drive source before and after the dancer roller device is controlled. Furthermore, the length variation of the welding wire due to elongation or the like is absorbed by the approaching / separating operation of the moving roller of the dancer roller device with respect to the fixed roller, and the tension is kept within a predetermined range, which is extremely useful. . However, also in the dancer roller apparatus according to the conventional examples 1 and 2, the welding wire may cause a undulation phenomenon for some reason during the rewinding operation of the welding wire. Since the tension of the welding wire during the undulation phenomenon is not constant, there is a problem to be solved that the quality of the welding wire is lowered during this period. Of course, if the operation of the welding wire rewinding device is stopped, the wavy phenomenon of the welding wire can be eliminated. However, it is preferable for preventing the decrease in productivity to eliminate the undulation phenomenon of the welding wire while continuing the operation of the welding wire rewinding device.

  Moreover, an excessive tension | tensile_strength generate | occur | produces on a welding wire for some reasons during a rewinding operation | work, and a welding wire may cut | disconnect. When the welding wire is cut, the tension is lost, so that the welding wire comes off from the roller, the fixed side roller, the moving side roller, the correction roller, etc. of the wire rod take-up machine 3. As a result, when the rewinding operation of the welding wire is resumed, the welding wire must be wound around the roller, the fixed roller, and the moving roller of the wire rod take-up machine 3 and passed between the correction rollers. Therefore, in addition to requiring a great amount of labor for the welding wire setting operation for resuming the welding wire rewinding operation, there is a problem to be solved that a long time is required (a reduction in productivity due to a reduction in operating rate). is there.

  Accordingly, an object of the present invention is to make it possible to adjust the tension of the welding wire by eliminating the undulation phenomenon that occurs during the rewinding operation, and even if the welding wire is cut during the rewinding operation, It is an object of the present invention to provide a welding wire rewinding method that makes it possible to complete the setting operation in a small amount of time and in a short time.

  The gist of the welding wire rewinding method of the present invention for solving the above-described problem is that a welding wire fed from a bobbin is wound around a stationary roller and a moving roller of a dancer roller device, and then the welding wire A welding wire rewinding method for winding on a spool having a smaller diameter than the bobbin while controlling the tension on the entry side and the exit side of the dancer roller device and the speed synchronization of the drive source before and after the dancer roller device, A wire catcher for holding the traveling welding wire is provided in both the vicinity of the welding wire in the roller device and the vicinity of the exit side.

  The means adopted by the welding wire rewinding method according to claim 2 of the present invention is the welding wire rewinding method according to claim 1, wherein the wire catcher clamps the welding wire.

  The means adopted by the welding wire rewinding method according to claim 3 of the present invention is the welding wire rewinding method according to any one of claims 1 and 2, wherein the cutting of the welding wire is detected. According to a signal output from the wire cutting detection sensor, the feeding and winding of the welding wire are stopped and the wire catcher is operated.

  The means adopted by the welding wire rewinding method according to claim 4 of the present invention is the welding wire rewinding method according to claim 3, wherein the wire cutting detection sensor is based on contact with the cut welding wire. It is in the place which comprises the electricity supply bar which operates the press body operation means which energizes and operates the press body.

  The means adopted by the welding wire rewinding method according to claim 5 of the present invention is the welding wire rewinding method according to claim 3, wherein the wire cutting detection sensor includes a stopper at an upper end portion, and the lower end side includes the stopper. A sliding rod that includes a roller that is in rolling contact with a welding wire, a sliding rod that freely slides and falls, a rod support member that has a stopper contact surface, and a rod support member that slidably supports the cutting of the welding wire. And a limit switch for detecting a drop of the sliding rod that falls based on the pressure and actuating a pressing body actuating means for actuating the pressing body.

  The means adopted by the welding wire rewinding method according to claim 6 of the present invention is the welding wire rewinding method according to claim 3, wherein the wire cutting detection sensor rotates between one end side and the other end side. A rotating rod that is rotatably supported by a moving support portion and includes a roller that is in rolling contact with the welding wire on one end side, and on the other end side of the rotating rod that rotates based on the cutting of the welding wire And a limit switch for operating the pressing body operating means for contacting and operating the pressing body.

  In the welding wire rewinding method according to claim 1 of the present invention, the undulation phenomenon that occurs in the welding wire traveling by the operation of the drive source is detected both in the vicinity of the entrance side and the exit side of the welding wire of the dancer roller device. Since it can be eliminated by clamping that allows the sliding movement of the welding wire by the operation of the wire catcher provided at the location, the tension of the welding wire is controlled to be constant. Therefore, according to the welding wire rewinding method according to claim 1 of the present invention, it is possible to prevent a decrease in the tension of the welding wire due to the undulation phenomenon. The quality of the welding wire to be produced is not deteriorated. Of course, since the rewinding operation of the welding wire is not stopped, the productivity is not lowered.

  In the welding wire rewinding method according to claim 1 of the present invention, even if the operation of the welding wire rewinding device is stopped at the end of the welding wire rewinding, the fixed side roller of the dancer roller device is held by the wire catcher. And the tension between the vicinity of the entry side and the vicinity of the exit side of the welding wire wound around the moving side roller are appropriately maintained. Therefore, according to the welding wire rewinding method according to claim 1 of the present invention, it is not necessary to adjust the tension of the welding wire when starting the winding of the welding wire with a new winding drum or spool, In addition, since the winding of the welding wire can be started, it is possible to contribute to the improvement of the welding wire rewinding work efficiency.

  According to the welding wire rewinding method according to claim 2 of the present invention, the undulation phenomenon of the welding wire is eliminated by clamping with the pressing body of the wire catcher, and the tension is maintained.

  According to the welding wire rewinding method of the third aspect of the present invention, when the feeding and winding of the welding wire are stopped by the signal output from the wire cutting detection sensor that detects the cutting of the welding wire, the wire catcher Thus, both the vicinity of the entrance side and the exit side of the welding wire of the dancer roller device are sandwiched. Accordingly, since a certain tension is applied to the welding wire hung around the fixed side roller and the moving side roller, the welding wire hung around the fixed side roller and the moving side roller loosens, It does not come off the moving roller.

  According to the welding wire rewinding method according to claim 4 of the present invention, by the pressing body of the wire catcher that operates via the operation of the pressing body operating means by the energizing bar that is energized based on the contact with the cut welding wire, Both the vicinity of the entrance side and the exit side of the welding wire of the dancer roller device are clamped.

  According to the welding wire rewinding method according to claim 5 of the present invention, the wire catcher is pressed through the operation of the pressing body operating means by the limit switch that detects the fall of the sliding rod due to the cutting of the cut welding wire. The body sandwiches both the vicinity of the welding wire entrance side and the exit side of the dancer roller device.

  According to the welding wire rewinding method according to claim 6 of the present invention, the wire catcher that operates via the operation of the pressing body operating means by the limit switch that comes into contact with the other end of the rotating rod by cutting the cut welding wire. The pressing body sandwiches both the vicinity of the welding wire entrance side and the exit side of the dancer roller device.

It is a typical side view of the welding wire rewinding apparatus which concerns on embodiment of this invention. 1 is a schematic cross-sectional view of a wire catcher according to an embodiment of the present invention. FIG. 3A is a schematic side view explanatory diagram of a wire cutting detection sensor that detects the cutting of the welding wire, and FIG. 3B is a wire cutting detection that detects the cutting of the welding wire according to the embodiment of the present invention. It is typical plane structure explanatory drawing of a sensor. FIG. 4A is a schematic configuration explanatory diagram of a wire cutting detection sensor according to another embodiment for detecting cutting of the welding wire, and FIG. 4B is another embodiment of detecting the cutting of the welding wire. It is typical structure explanatory drawing of a wire cutting | disconnection detection sensor. It is a side view of the dancer roller device concerning conventional example 1. FIG. 6A is a conceptual diagram of the dancer roller device, and FIG. 6B is a side view of the dancer roller device according to the second conventional example.

  Hereinafter, a welding wire rewinding apparatus according to an embodiment for carrying out the welding wire rewinding method of the present invention will be described with reference to the attached drawings. 1 is a schematic side view of a welding wire rewinding apparatus according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional view of a wire catcher, and FIG. 3A is a wire cutting detection sensor that detects cutting of the welding wire. FIG. 3B is a schematic plan configuration explanatory diagram of a wire cutting detection sensor that detects the cutting of the welding wire, FIG. 3B is a view as viewed from the arrow A in FIG. FIG. 4A is a schematic configuration explanatory diagram of a wire cutting detection sensor according to another embodiment for detecting cutting of the welding wire, and FIG. 4B is another embodiment of detecting the cutting of the welding wire. It is typical structure explanatory drawing of a wire cutting | disconnection detection sensor.

  Reference numeral 1 shown in FIG. 1 is a welding wire rewinding device that winds a welding wire (with flux, diameter: 1.2 to 1.6 mm) wound around a bobbin onto a spool having a smaller diameter than the bobbin. is there. The welding wire rewinding device 1 includes a wire feeding machine 2 in which a bobbin 3 is set and a wire take-up machine 4 that takes up a welding wire 5 fed out from the bobbin 3. A dancer roller device 11 to be described later is disposed between the wire take-up machine 4 and a spool winder 6 on which a detachable spool 7 for winding the welding wire 5 is set. This dancer roller device 11 functions to absorb the length variation between the wire take-up machine 4 and the spool winder 6 of the welding wire 5 and keep the tension of the welding wire 5 within a predetermined range. And is configured as described later. Drive sources such as the wire feeding machine 2, the wire take-up machine 4, and the spool winder 6 are controlled in synchronization by a control panel (not shown).

  That is, in the dancer roller device 11, the fixed side roller 12 is supported by a triangular side support roller support bracket formed on the right side of the dancer frame 11a in FIG. The moving roller 13 located below the fixed roller 12 is provided at one end of the arm 15 pivotally supported by a hinge 19 provided near the left corner of the dancer frame 11a in FIG. Yes. A swing buffer mechanism 14 described later is provided on the other end side of the arm 15.

  The swing buffer mechanism 14 has a balance weight 16 provided on the other end side of the arm 15 and a bottom side fixed to an appropriate portion of the dancer frame 11a. The air cylinder 17 is configured to move the roller 12 downward. One end side of the wire 20 is fastened to the tip of the rod of the balance weight 16, and the other end side of the wire 20 is wound around a pulley 18 that rotates coaxially with the hinge 19.

  The swing buffer mechanism 14 suppresses the moving roller 13 that is about to descend in the direction of its own weight G by the first rotational moment W formed by the gravity of the balance weight 16, and the first rotational moment W The second rotational moment V in the opposing direction is formed by the tensile force generated by the air cylinder 17, and the suppressed self-weight drop force is elastically supplemented to adjust the movement side roller 13 to move smoothly. It is something to do. The welding wire 5 taken up by the wire take-up machine 4 is wound around the fixed-side roller 12 and the moving-side roller 15 and then sent in the direction of the arrow in the figure. A spool 7 set in the take-up machine 6 is wound up and rewinded.

  As is well understood from the above description relating to the configuration of the dancer roller device 11 of the welding wire rewinding device 1, the above configuration of the dancer roller device 11 includes the dancer roller device 1 according to the conventional example 2 and The configuration is exactly the same. In the case of the dancer roller device 11 of the welding wire rewinding device 1 according to the embodiment of the present invention, the side wire catcher 21 entering the vicinity of the entrance side of the welding wire 5 in the dancer roller device 11 and the exit of the welding wire 5 are provided. An outgoing wire catcher 22 is provided in the vicinity of the side.

When a wavy phenomenon that varies the tension occurs in the traveling welding wire 5, it is possible to hold the sliding movement of the welding wire 5 by the operation of the entry side wire catcher 21 and the exit side wire catcher 22. By eliminating the undulation phenomenon (after eliminating the undulation phenomenon, the clamping force with respect to the welding wire 5 is released), the entry side and the exit side of the welding wire 5 of the dancer roller device 11 during the welding wire rewinding operation. Is configured to control the tension between.
Further, when the welding wire rewinding operation is completed, or when the welding wire rewinding device 1 is stopped when the welding wire is cut, the welding wire 5 that has stopped traveling can be held at the stop position. .

  Next, with reference to FIG. 2 of the accompanying drawings, the configuration of the incoming wire catcher 21 and the outgoing wire catcher 22 will be described. However, since the configuration of the entry-side wire catcher 21 and the exit-side wire catcher 22 is exactly the same, the configuration will be described by taking the entry-side wire catcher 21 as an example. That is, the entry-side wire catcher 21 according to the present embodiment includes a plate 21a and a casing 21d, which will be described later, facing the plate 21a at a predetermined distance from the plate 21a, as shown in FIG. ing. One end of the upper side of the plate 21a and the casing 21d in the figure is integrally connected by a connecting member 21c.

  A fixed pressing body 21b is fixed to a side of the plate 21a facing the casing 21d, and a piston 21f having a rod-shaped moving pressing body 21g is provided in a piston chamber 21e that is closed by a sealing lid 21i of the casing 21d. It is stored. The piston chamber 21e communicates with the atmosphere through an electromagnetic valve (corresponding to a pressing body actuating means) (not shown). When the welding wire rewinding operation is normally performed, the movable pressing body 21g is separated from the fixed pressing body 21b by a return spring (pressing body operating means) 21h. On the other hand, when the waving phenomenon occurs in the traveling welding wire 5, when the welding wire rewinding operation is completed, and when the operation of the welding wire rewinding apparatus 1 at the time of cutting the welding wire is stopped, the electromagnetic valve The air pressure of a predetermined pressure is supplied to the piston chamber 21e from a compressed air supply source (not shown) by the switching, and moves in the direction of the fixed pressing body 21b.

  When the winding of the welding wire 5 wound around the bobbin 3 set in the wire feeding machine 2 is finished, a new bobbin 3 is set, and the welding wire 5 drawn out from the new bobbin 3 is taken up. When performing the welding wire setting operation of leading to the spool 7 set on the spool winder 6 through the machine 4 and the dancer roller device 11, the electromagnetic valve is switched, and the return spring 21h of the movable pressing body 21g is used. The separation operation from the fixed pressing body 21b is performed. The separation state of the movable pressing body 21g from the fixed pressing body 21b as described above continues to be maintained throughout the winding operation unless an abnormality (waving phenomenon, cutting) occurs in the winding operation of the welding wire 5. . In the embodiment of the present invention, the inlet wire catcher 21 and the outlet wire catcher 22 are provided with the piston chamber 21e only on one side, but the piston chamber 21e is provided on both sides of the welding wire 5 therebetween. The structure which is made may be sufficient. Moreover, although these entrance side wire catcher 21 and exit side wire catcher 22 are comprised so that the welding wire 5 to run may be clamped from right and left, the structure clamped from the upper and lower sides may be sufficient. Furthermore, the wire catcher is not limited to the above-described configuration, as long as it can hold the traveling welding wire.

In the case of the welding wire rewinding apparatus 1 according to the embodiment of the present invention, when the welding wire 5 is cut due to an excessive tension generated for some reason, a wire cutting detection sensor, which will be described later, detects the cutting of the welding wire 5. The operation of the welding wire rewinding device 1 is stopped by the signal output from the control unit 23, and the feeding and winding of the welding wire 5 are stopped.
Of course, even when the operation of the welding wire rewinding device 1 is stopped, as described above, air of a predetermined pressure is applied to the piston chambers 21e of the inlet and outlet wire catchers 21 and 22 through the electromagnetic valve. The pressure is supplied.

  As shown in FIG. 3, the wire cutting detection sensor 23 is placed in a direction perpendicular to the feeding direction of the welding wire 5 at a position above the welding wire 5 fed from the bobbin 3 set in the wire feeding machine 2. A power supply bar 23a is provided. The energizing bar 23a is energized when the welding wire 5 swung by the bobbin 3 comes into contact with the cutting, and the current controls the driving source of the welding wire rewinding device 1 through the lead wire 23b as a welding wire cutting signal. It is configured to be transmitted to a control panel (not shown).

  By the way, the wire cutting | disconnection detection sensor of the welding wire rewinding apparatus 1 which concerns on the above embodiment is a structure provided with the electricity supply bar 23a as mentioned above. However, the present invention is not limited to the wire cutting detection sensor having such a configuration. For example, a wire cutting detection sensor having a configuration as shown in FIGS. 4A and 4B may be used.

  That is, the wire cutting detection sensor 24 shown in FIG. 4 (a) includes a sliding rod 24a that includes a stopper 24b at the upper end and a roller 24c that includes a roller 24c that is in rolling contact with the welding wire at the lower end. ing. The sliding rod 24a is supported by a rod support member 24d having a stopper contact surface 24e with which the lower surface of the stopper 24b contacts. Further, a control panel (not shown) that detects the cutting of the welding wire 5 by the dropping of the sliding rod 24a that falls based on the cutting of the welding wire 5 and controls the operation of the welding wire rewinding device 1 using the detected cutting signal. Is provided with a limit switch 24f that stops the operation of the welding wire rewinding apparatus 1.

  In addition, the wire cutting detection sensor 25 shown in FIG. 4B is rotatably supported by a rotation support portion 25c between one end side and the other end side, and is a roller 25b that is in rolling contact with the welding wire at one end side. A rotating rod 25a having Further, the cutting of the welding wire 5 is detected by contacting the other end of the rotating rod 25a that is rotated based on the cutting of the welding wire 5, and the operation of the welding wire rewinding device 1 is performed based on the detected cutting signal. A limit switch 25d is provided for transmitting to a control panel (not shown) to be controlled and stopping the operation of the welding wire rewinding apparatus 1. Reference numeral 25e denotes a stopper that regulates the lowest rotation position of the rotation rod 25a.

  Hereinafter, the operation mode of the welding wire rewinding apparatus 1 configured as described above for carrying out the welding wire rewinding method of the present invention will be described. That is, when the operation of the welding wire rewinding device 1 is started by operating a control panel (not shown), the welding wire 5 fed from the bobbin 3 by the wire feeding machine 2 is taken up by the wire take-up machine 4. The welding wire 5 coming out of the wire take-up machine 4 is connected to the incoming wire catcher 21, the fixed roller 12 of the dancer roller device 11, the moving roller 13, the fixed roller 12, the outgoing wire catcher 22, and the cast roller 8. Then, it is wound and rewinded by the spool 7 set in the spool winder 6.

When the winding of the welding wire 5 by the spool 7 is completed by continuing the operation of the welding wire rewinding device 1, the operation of the welding wire rewinding device 1 is stopped, and the incoming wire catcher 21 and the outgoing wire catcher are stopped. 22, the vicinity of the entrance side of the welding wire 5 of the dancer roller device 11 and the vicinity of the exit side are sandwiched. Then, it is sequentially repeated that a new spool 7 is set in the spool winder 6 and the winding operation of the welding wire 5 onto the set new spool 7 is started. Of course, when all of the welding wires wound around the bobbin 3 are wound around the spool 7, the operation of the welding wire winding device 1 is stopped.
Then, a new bobbin 3 around which the welding wire is wound is set in the wire feeding machine 2, and the welding wire 5 drawn from the new bobbin 3 is spooled through the wire take-up machine 4 and the dancer roller device 11. After the welding wire setting operation of guiding to the spool 7 set in the take-up machine 6 is performed, the operation of the welding wire rewinding device 1 is started.

  During the rewinding operation of the welding wire 5 as described above of the welding wire rewinding device 1, when a undulation phenomenon occurs in the traveling welding wire 5, the dancer roller device 11 near the entrance side of the welding wire 5. The undulation phenomenon of the welding wire 5 is eliminated by the clamping that allows the sliding movement of the welding wire 5 by the operation of the entry side wire catcher 21 provided on the outer side and the exit side wire catcher 22 provided in the vicinity of the exit side. After canceling, the clamping force for the welding wire 5 is released), and the tension is controlled. Therefore, since the decrease in the tension of the welding wire 5 due to the undulation phenomenon is prevented, the product quality of the welding wire 5 wound around the spool 7 does not deteriorate. In this case, since the undulation phenomenon can be solved while continuing the rewinding operation of the welding wire, productivity does not decrease.

  Even if the operation of the welding wire rewinding device 1 is stopped at the end of the welding wire rewinding, the fixed side of the dancer roller device 11 is held by the sandwiching of the welding wire 5 by the incoming wire catcher 21 and the outgoing wire catcher 22. The tension between the vicinity of the entrance side and the vicinity of the exit side of the welding wire 5 wound around the roller 12 and the moving side roller 13 is properly maintained. Therefore, since it is not necessary to adjust the tension of the welding wire 5 when starting the winding of the welding wire 5 with the new spool 7, the winding operation of the welding wire 5 can be started within a short time. This can greatly contribute to the improvement of the efficiency of rewinding the wire 5.

  Further, even if the feeding and winding of the welding wire 5 are stopped due to the operation stop of the welding wire rewinding device 1 by the signal output from the wire cutting detection sensor 23 that detects the cutting of the welding wire 5, the incoming wire catcher is stopped. 21 and the exit wire catcher 22 sandwich the vicinity of the entrance side and the exit side of the welding wire 5 wound around the stationary roller 12 and the moving roller 13 of the dancer roller device 11.

  Since the welding wire 5 is sandwiched between the vicinity of the entrance side and the vicinity of the exit side, appropriate tension is applied to the welding wire 5 wound around the fixed side roller 12 and the moving side roller 13. There is no possibility that the welding wire 5 wound around the moving roller 13 is loosened or detached from the fixed roller 12 and the moving roller 13. Therefore, the work of winding the cut welding wire 5 around the fixed side roller 12 and the moving side roller 13 after repair is unnecessary, and the winding of the welding wire 5 can be started in a short time. This can greatly contribute to the improvement of the efficiency of rewinding the welding wire 5. It should be noted that when the welding wire rewinding operation is completed or when the welding wire rewinding device 1 is stopped when the welding wire is cut, the holding force of the welding wire 5 by the entry / exit wire catchers 21 and 22 is the traveling welding wire 5. It is sufficient if the squeezing force is allowed to allow sliding running when the wavy phenomenon is eliminated.

  By the way, the welding wire rewinding method of this invention based on the above embodiment demonstrated as an example the case where it applied with respect to the dancer roller apparatus of the structure which concerns on the said prior art example 2. FIG. However, the present invention is not limited to this configuration, and can be applied to, for example, the dancer roller device having the configuration according to the conventional example 1. Therefore, the present invention is not limited to the configuration according to the embodiment. The design can be freely changed without departing from the technical idea of the present invention. Moreover, although the above description demonstrated the aspect which rewinds a flux-cored welding wire, this invention is applicable also to the aspect which winds up other welding wires, such as a solid welding wire.

  As described above, according to the present invention, a welding wire wound around a bobbin can be efficiently wound on a spool having a smaller diameter than the bobbin. Therefore, a step of rewinding a coiled hoop (steel strip) and forming it into a U-shaped steel strip, a step of filling a flux in the middle of forming the hoop, and further drawing a tubular molding wire filled with the flux It is suitable for a welding wire rewinding apparatus and method manufactured by a highly efficient manufacturing line such as a flux-cored welding wire manufactured by continuously performing the winding process on the same line.

DESCRIPTION OF SYMBOLS 1 ... Welding wire rewinding apparatus 2 ... Wire feeding machine 3 ... Bobbin 4 ... Wire take-up machine 5 ... Welding wire 6 ... Spool winder 7 ... Spool 8 ... Cast roller 11 ... Dancer roller apparatus, 11a ... Dancer frame, 12 ... fixed side roller, 13 ... moving side roller, 14 ... swing buffer mechanism, 15 ... arm, 16 ... balance weight, 17 ... air cylinder, 18 ... pulley, 19 ... hinge, 20 ... wire 21 ... entry side wire catcher, 21a ... Plate, 21b ... Fixed pressing body, 21c ... Connecting member, 21d ... Casing, 21e ... Piston chamber, 21f ... Piston, 21g ... Moving pressing body, 21h ... Return spring, 21i ... Sealing lid 22 ... Outlet wire catcher 23 ... Wire cutting detection sensor, 23a ... Power supply bar, 23b ... Lead wire 24 ... Wire cutting detection Sensor, 24a ... sliding rod, 24b ... stopper, 24c ... roller, 24d ... rod support member, 24e ... stopper contact surface, 24f ... limit switch 25 ... wire cutting detection sensor, 25a ... rotating rod, 25b ... roller, 25c ... rotation support part, 25d ... limit switch

Claims (6)

  The welding wire fed from the bobbin is wound around the stationary roller and the moving roller of the dancer roller device, and the tension of the welding wire on the entrance side and the exit side of the dancer roller device and the front and rear sides of the dancer roller device A welding wire rewinding method for winding on a spool having a diameter smaller than that of the bobbin while controlling speed synchronization of a driving source, wherein the dancer roller device has both the vicinity of the entrance side and the exit side of the welding wire. A welding wire rewinding method, characterized in that a wire catcher is provided for holding a traveling welding wire.   The welding wire rewinding method according to claim 1, wherein the wire catcher includes a pressing body that sandwiches the welding wire.   3. The signal output from a wire cutting detection sensor that detects the cutting of the welding wire stops feeding and winding of the welding wire and activates the wire catcher. The welding wire rewinding method according to Item.   The welding wire rewinding according to claim 3, wherein the wire cutting detection sensor includes an energizing bar for energizing the pressing body actuating means for energizing the pressing body based on contact with the cut welding wire. Method.   The wire cutting detection sensor is provided with a stopper at the upper end and a sliding rod that is provided with a roller that is in rolling contact with the welding wire at the lower end, and a sliding rod that supports the sliding rod in a slidable manner. A rod support member having the stopper contact surface; and a limit switch for detecting a fall of the sliding rod that falls based on the cutting of the welding wire and for actuating a pressing body actuating means for actuating the pressing body. The welding wire rewinding method according to claim 3.   The wire cutting detection sensor is rotatably supported between one end side and the other end side by a rotation support portion, and has a rotating rod provided with a roller that is in rolling contact with the welding wire on one end side, and the welding The welding wire winding according to claim 3, further comprising a limit switch that contacts a second end side of the rotating rod that rotates based on the cutting of the wire and operates a pressing body operating means that operates the pressing body. Replacement method.

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