NL2004380C2 - Welding-wire rewinding method. - Google Patents

Welding-wire rewinding method. Download PDF

Info

Publication number
NL2004380C2
NL2004380C2 NL2004380A NL2004380A NL2004380C2 NL 2004380 C2 NL2004380 C2 NL 2004380C2 NL 2004380 A NL2004380 A NL 2004380A NL 2004380 A NL2004380 A NL 2004380A NL 2004380 C2 NL2004380 C2 NL 2004380C2
Authority
NL
Netherlands
Prior art keywords
wire
welding wire
welding
rewinding
pressure body
Prior art date
Application number
NL2004380A
Other languages
Dutch (nl)
Other versions
NL2004380A (en
Inventor
Shinichi Nishimoto
Original Assignee
Kobe Seiko Sho Kobe Steel Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Seiko Sho Kobe Steel Kk filed Critical Kobe Seiko Sho Kobe Steel Kk
Publication of NL2004380A publication Critical patent/NL2004380A/en
Application granted granted Critical
Publication of NL2004380C2 publication Critical patent/NL2004380C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/003—Regulation of tension or speed; Braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/036—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism

Description

WELDING-WIRE REWINDING METHOD
BACKGROUND OF THE INVENTION
1. Field of the Invention 5 The present invention relates to a welding-wire rewinding method of feeding a welding wire wound around a bobbin and winding the welding wire around a spool having a diameter smaller than that of the bobbin.
2. Description of the Related Art 10 In a welding-wire rewinding apparatus that feeds a welding wire wound around a bobbin and winds the welding wire around a spool having a diameter smaller than that of the bobbin, a dancer roller device is disposed between a wire feeding unit having the bobbin set therein and a spool 15 winding unit having set therein the spool around which the welding wire fed from the bobbin is to be wound. Such a dancer roller device has a function of maintaining the tension of the welding wire within a predetermined range by absorbing fluctuations in the length of the welding wire 20 caused by stretching of the welding wire between the wire feeding unit and the spool winding unit. Known examples of a dancer roller device of the related art include a configuration disclosed in Japanese Unexamined Utility Model Registration Application Publication No. 58-060657.
25 First, a dancer roller device according to a first 2 related-art example disclosed in the above publication will be described with reference to Fig. 5, which is a side view of this dancer roller device. A dancer roller device 51 includes a fixed roller 55 provided at an upper section of a 5 roller tower 54 and a movable roller 56 provided below the fixed roller 55. The movable roller 56 is configured to be slidably descendable to the lower side of the roller tower 54 by the own weight of the movable roller 56. A welding wire 52 is hooked around the fixed roller 55 and the movable 10 roller 56, is subsequently delivered in the direction of an arrow in the drawing, and is then wound around a wire drum (not shown), a spool (not shown), or the like via adjustment rollers 58 and a casting roller 59.
Reference numeral 53 in the drawing denotes a wire 15 receiving unit, 54a denotes a sliding rod, and 56a denotes a hollow sliding member slidably fitted around the sliding rod 54a.
Next, a dancer roller device according to a second related-art example disclosed in the same publication will 20 be described with reference to Fig. 6A, which is a schematic view thereof, and Fig. 6B, which is a side view thereof. Reference numeral 61 in the drawings denote a dancer roller device. In the dancer roller device 61, a movable roller is changed from a sliding type, as in the first related-art 25 example, to a rocking type. Specifically, a fixed roller 65 3 is supported by a roller-supporting bracket having a triangular shape in side view and formed on the right side of a dancer frame 61a in Fig. 6B. A movable roller 66 located below the fixed roller 65 is provided at one end of 5 an arm 70 pivotally supported by a hinge 74 provided near a left corner of the dancer frame 61a in the drawing. A rocking shock-absorbing mechanism 67, to be described below, is provided at the other end of the arm 70.
The rocking shock-absorbing mechanism 67 includes a 10 balance weight 71 provided at the other end of the arm 70 and an air cylinder 72 whose bottom is fixed to an appropriate section of the dancer frame 61a and which causes the arm 70 and the movable roller 66 to move downward against the balance weight 71. One end of a wire 75 is 15 fastened to an end of a 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 rocking shock-absorbing mechanism 67 has a function of suppressing the movable roller 66, which tries to descend in the 20 direction of its own weight G, with a first rotation moment W produced by the gravity of the balance weight 71, and also has an adjusting function of elastically complementing the suppressed self-weight descending force by producing a second rotation moment V acting in a direction against this 25 first rotation moment W by using a pulling force by the air 4 cylinder 72 so as to allow the movable roller 66 to move smoothly. A welding wire 62 received by a wire receiving unit 63 is hooked around the fixed roller 65 and the movable roller 66, is subsequently delivered in the direction of an 5 arrow in the drawing, and is then wound around a wire drum, a spool, or the like via adjustment rollers 68 and a casting roller (not shown).
Unlike the movable roller in the dancer roller device according to the first related-art example, the movable 10 roller in the dancer roller device according to the second related-art example is not restrained by a sliding rod or the like, and the movable roller 66 thus tries to descend quickly due to its own weight. However, since the rocking shock-absorbing mechanism 67 prevents a rapid descent of the 15 movable roller 66, excessive tension is prevented from being applied to the welding wire.
With the dancer roller device according to the first and second related-art examples, the rates of driving sources before and after the dancer roller device are 20 synchronously controlled. Moreover, the dancer roller device is extremely advantageous in that it maintains the tension of the welding wire within a predetermined range by absorbing fluctuations in the length of the welding wire due to stretching thereof by causing the movable roller to move 25 toward and away from the fixed roller. However, even in the 5 dancer roller device according to the first and second related-art examples, the welding wire may undulate due to a certain reason during the welding-wire rewinding process. Since the tension of the welding wire is unstable when 5 undulating, the quality of the welding wire is lowered during this period of undulation, which is a problem that should be solved. It is needless to say that an undulation phenomenon of the welding wire can be eliminated by stopping the operation of the welding-wire rewinding apparatus.
10 However, eliminating the undulation phenomenon of the welding wire while continuing the operation of the welding-wire rewinding apparatus is preferred for preventing the productivity from being lowered.
There may also be a case where the welding wire is cut 15 when excessive tension is applied to the welding wire due to a certain reason during the welding-wire rewinding process. Since the tension is lost when the welding wire is cut, the welding wire becomes detached from a roller in the wire receiving unit 63, the fixed roller, the movable roller, the 20 adjustment rollers, and the like. As a result, when the welding-wire rewinding process is to be resumed, the welding wire needs to be hooked around the roller in the wire receiving unit 63, the fixed roller, and the movable roller and also needs to be extended through between the adjustment 25 rollers. Therefore, in order to resume the welding-wire 6 rewinding process, an enormous amount of labor for setting the welding wire is required in addition to a long period of time (resulting in lower productivity due to a reduced operation rate), which is a problem that should be solved.
5
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a welding-wire rewinding method that allows for an adjustment of the tension of a welding wire by 10 eliminating an undulation phenomenon occurring during a rewinding process and that also allows a welding-wire setting process to be completed with a small amount of labor and within a short period of time even when the welding wire is cut.
15 In order to solve the aforementioned problems, the present invention provides a welding-wire rewinding method of winding a welding wire fed from a bobbin around a spool having a diameter smaller than that of the bobbin in a state where the welding wire is hooked around a fixed roller and a 20 movable roller of a dancer roller device, the method being performed while controlling the tension at an entrance side and an exit side of the welding wire in the dancer roller device and synchronously controlling the rates of driving sources before and after the dancer roller device. In the 25 welding-wire rewinding method, wire catchers that nip the 7 welding wire while permitting sliding of the welding wire are respectively provided near both the entrance side and the exit side of the welding wire in the dancer roller device.
5 In the welding-wire rewinding method according to the present invention, an undulation phenomenon occurring in the welding wire driven by actuating the driving sources can be eliminated by nipping the welding wire in a slidable manner by actuating the wire catchers provided near both the 10 entrance side and the exit side of the welding wire in the dancer roller device, whereby the tension of the welding wire can be stably controlled. Therefore, with the welding-wire rewinding method according to the present invention, since a decrease in the tension of the welding wire caused 15 by an undulation phenomenon can be prevented, the quality of the welding wire wound around the spool during the welding-wire rewinding process is prevented from being lowered. It is needless to say that the productivity is not lowered since the welding-wire rewinding process is not stopped.
20 Furthermore, in the welding-wire rewinding method according to the present invention, even when the operation of a welding-wire rewinding apparatus is stopped upon completion of the welding-wire rewinding process, because the welding wire is nipped by the wire catchers, the tension 25 between near the entrance side and the exit side of the 8 welding wire, which is wound around the fixed roller and the movable roller of the dancer roller device, can be properly maintained. Therefore, in the welding-wire rewinding method according to the present invention, since it is not 5 necessary to adjust the tension of the welding wire when commencing a process of winding the welding wire around a new winding drum or spool, the winding process of the welding wire can be commenced within a short period of time, thereby contributing to enhanced rewinding efficiency of the 10 welding wire.
In the welding-wire rewinding method described above, the wire catchers may each include a pressing body that nips the welding wire.
With such a welding-wire rewinding method, an 15 undulation phenomenon of the welding wire is eliminated by the nipping by the pressing bodies of the wire catchers, whereby the tension is maintained.
In the welding-wire rewinding method, feeding and winding of the welding wire may be stopped in response to a 20 signal output from a wire-cut detection sensor that detects that the welding wire is cut, and the wire catchers may be actuated so as to nip the welding wire.
With such a welding-wire rewinding method, when the feeding and the winding of the welding wire are stopped in 25 response to a signal output from the wire-cut detection 9 sensor that detects that the welding wire is cut, the wire catchers nip the welding wire near both the entrance side and the exit side thereof in the dancer roller device. Therefore, since the welding wire hooked around the fixed 5 roller and the movable roller receives certain tension, the welding wire hooked around the fixed roller and the movable roller is prevented from sagging or from being detached from the fixed roller and the movable roller.
The wire catchers may each include a pressing body that 10 nips the welding wire and pressing-body actuating means configured to actuate the pressing body, and the wire-cut detection sensor may include an electric bar that actuates the pressing-body actuating means by receiving electricity on the basis of contact with the cut welding wire.
15 Accordingly, both sections of the welding wire near the entrance side and the exit side thereof in the dancer roller device are nipped by the pressing bodies of the wire catchers that are actuated by actuation of the pressing-body actuating means by the electric bar that receives 20 electricity on the basis of contact with the cut welding wire.
Alternatively, the wire-cut detection sensor may include a stopper at an upper end thereof, a slidably-descendable sliding rod having a roller, which is rotatably 25 in contact with the welding wire, at a lower end thereof, a 10 rod-supporting member slidably supporting the sliding rod and having a stopper contact surface, and a limit switch that detects a descent of the sliding rod, which descends when the welding wire is cut, and actuates pressing-body 5 actuating means configured to actuate the pressing body.
Accordingly, both sections of the welding wire near the entrance side and the exit side thereof in the dancer roller device are nipped by the pressing bodies of the wire catchers that are actuated by actuation of the pressing-body 10 actuating means by the limit switch that detects a descent of the sliding rod, which descends when the welding wire is cut.
As a further alternative, the wire-cut detection sensor may include a rotating rod whose intermediate section 15 between one end and another end thereof is rotatably supported by a rotatably-supporting section and having a roller, which is rotatably in contact with the welding wire, at the one end thereof, and a limit switch that comes into contact with the other end of the rotating rod, which 20 rotates when the welding wire is cut, and actuates pressing-body actuating means configured to actuate the pressing body.
Accordingly, both sections of the welding wire near the entrance side and the exit side thereof in the dancer roller device are nipped by the pressing bodies of the wire 25 catchers that are actuated by actuation of the pressing-body 11 actuating means by the limit switch that comes into contact with the other end of the rotating rod, which rotates when the welding wire is cut.
5 BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 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 10 catcher according to an embodiment of the present invention; . Fig. 3A is a schematic side view for explaining the configuration of a wire-cut detection sensor according to an embodiment of the present invention that detects that a welding wire is cut, and Fig. 3B is a schematic plan view 15 for explaining the configuration of the wire-cut detection sensor that detects that a welding wire is cut;
Fig. 4A is a schematic view for explaining the configuration of a wire-cut detection sensor according to another embodiment that detects that a welding wire is cut, 20 and Fig. 4B is a schematic view for explaining the configuration of a wire-cut detection sensor according to yet another embodiment that detects that a welding wire is cut;
Fig. 5 is a side view of a dancer roller device 25 according to a first related-art example; and 12
Fig. 6A is a schematic view of a dancer roller device according to a second related-art example, and Fig. 6B is a side view of the dancer roller device.
5 DESCRIPTION OF THE PREFERRED EMBODIMENTS
A welding-wire rewinding apparatus according to an embodiment for implementing a welding-wire rewinding method according to the present invention will be described below with reference to the attached drawings. Fig. 1 is a 10 schematic side view of the welding-wire rewinding apparatus according to the embodiment of the present invention. Fig.
2 is a schematic cross-sectional view of a wire catcher.
Fig. 3A is a schematic side view for explaining the configuration of a wire-cut detection sensor that detects 15 that a welding wire is cut. Fig. 3B is a schematic plan view for explaining the configuration of the wire-cut detection sensor that detects that a welding wire is cut. Specifically, Fig. 3B is a diagram as viewed from an arrow A in Fig. 3A. Fig. 4A is a schematic view for explaining the 20 configuration of a wire-cut detection sensor according to another embodiment that detects that a welding wire is cut. Fig. 4B is a schematic view for explaining the configuration of a wire-cut detection sensor according to yet another embodiment that detects that a welding wire is cut.
25 Reference numeral 1 shown in Fig. 1 denotes a welding- 13 wire rewinding apparatus that winds a welding wire (flux-cored and having a diameter of 1.2 to 1.6 mm) wound around a bobbin onto a spool or the like having a diameter smaller than that of the bobbin. This welding-wire rewinding 5 apparatus 1 includes a wire feeding unit 2 in which a bobbin 3 is set and a wire receiving unit 4 that receives a welding wire 5 fed from the bobbin 3. A dancer roller device 11, to be described below, is disposed between the wire receiving unit 4 and a spool winding unit 6 that has a detachable 10 spool 7 set therein and that winds the welding wire 5 therearound. This dancer roller device 11 has a function of maintaining the tension of the welding wire 5 within a predetermined range by absorbing fluctuations in the length of the welding wire 5 between the wire receiving unit 4 and 15 the spool winding unit 6, and is configured as described below. Driving sources for the wire feeding unit 2, the wire receiving unit 4, the spool winding unit 6, and the like are synchronously controlled by a control board (not shown).
20 Specifically, in the dancer roller device 11, a fixed roller 12 is supported by a roller-supporting bracket having a triangular shape in side view and formed on the right side of a dancer frame 11a in Fig. 1. A movable roller 13 located below the fixed roller 12 is provided at one end of 25 an arm 15 pivotally supported by a hinge 19 provided near a 14 left corner of the dancer frame 11a in Fig. 1. A rocking shock-absorbing mechanism 14, to be described below, is provided at the other end of the arm 15.
The rocking shock-absorbing mechanism 14 includes a 5 balance weight 16 provided at the other end of the arm 15 and an air cylinder 17 whose bottom is fixed to an appropriate section of the dancer frame 11a and which causes the arm 15 and the movable roller 13 to move downward against the balance weight 16. One end of a wire 20 is 10 fastened to an end of a rod of the balance weight 16, and the other end of the wire 20 is wound around a pulley 18 that rotates coaxially with the hinge 19.
The rocking shock-absorbing mechanism 14 has a function of suppressing the movable roller 13, which tries to descend 15 in the direction of its own weight G, with a first rotation moment W produced by the gravity of the balance weight 16, and also has an adjusting function of elastically complementing the suppressed self-weight descending force by producing a second rotation moment V acting in a direction 20 against this first rotation moment W by using a pulling force by the air cylinder 17 so as to allow the movable roller 13 to move smoothly. The welding wire 5 received by the wire receiving unit 4 is rewound by being hooked around the fixed roller 12 and the movable roller 13, then being 25 delivered in the direction of an arrow in the drawing, and 15 finally being wound around the spool 7 set in the spool winding unit 6 via adjustment rollers (not shown) and a casting roller 8.
As it is clearly understood from the above description 5 regarding the configuration of the dancer roller device 11 in the welding-wire rewinding apparatus 1, the above configuration of the dancer roller device 11 is substantially the same as that of the dancer roller device 61 according to the aforementioned second related-art 10 example. In the case of the dancer roller device 11 in the welding-wire rewinding apparatus 1 according to the embodiment of the present invention, an entrance-side wire catcher 21 is provided near the entrance side of the welding wire 5 in the dancer roller device 11, and an exit-side wire 15 catcher 22 is provided near the exit side of the welding wire 5.
When an undulation phenomenon that causes the tension of the running welding wire 5 to fluctuate occurs, the entrance-side wire catcher 21 and the exit-side wire catcher 20 22 are actuated to nip the welding wire 5 in a slidable manner, thereby eliminating the undulation phenomenon (the nipping force applied to the welding wire 5 is released after the elimination of the undulation phenomenon). Consequently, the tension between the entrance side and the 25 exit side of the welding wire 5 in the dancer roller device 16 11 during a welding-wire rewinding process is controlled.
Furthermore, when the operation of the welding-wire rewinding apparatus 1 is stopped at the time when the welding wire 5 is cut upon completion of the rewinding 5 process of the welding wire 5, the welding wire 5 stopped from running can be nipped at the stopped position.
Next, the configuration of the entrance-side wire catcher 21 and the exit-side wire catcher 22 will be described with reference to Fig. 2, which is an attached 10 drawing. Since the entrance-side wire catcher 21 and the exit-side wire catcher 22 have completely the same configuration, the following description of the configuration thereof will be directed to the entrance-side wire catcher 21 as an example. Specifically, as shown in 15 Fig. 2, the entrance-side wire catcher 21 according to this embodiment includes a plate 21a and a casing 21d, to be described below, facing the plate 21a at a position separated therefrom by a predetermined distance. Upper ends of the plate 21a and the casing 21d in the drawing are 20 integrally connected to each other with a connecting member 21c.
A fixed pressing body 21b is fixed to a side of the plate 21a opposite the casing 21d, and a piston 21f having a rod-shaped movable pressing body 21g is accommodated in a 25 piston chamber 21e covered with a sealing cover 21i of the 17 casing 21d. The piston chamber 21e is provided with an electromagnetic valve (corresponding to pressing-body actuating means) (not shown) via which the piston chamber 21e is in communication with the atmosphere. When the 5 welding-wire rewinding process is properly performed, the movable pressing body 21g is kept distant from the fixed pressing body 21b by a return spring (pressing-body actuating means) 21h. On the other hand, when an undulation phenomenon occurs in the running welding wire 5, when the 10 welding-wire rewinding process is completed, or when the operation of the welding-wire rewinding apparatus 1 is stopped at the time when the welding wire is cut, air pressure with a predetermined pressure value is supplied to the piston chamber 21e from a compressed-air supply source 15 (not shown) by switching the electromagnetic valve, so as to cause the movable pressing body 21g to move towards the fixed pressing body 21b.
When the winding process of the welding wire 5 wound around the bobbin 3 set in the wire feeding unit 2 is 20 completed and a subsequent welding-wire rewinding process of setting a new bobbin 3 and guiding a welding wire 5 pulled out from the new bobbin 3 to the spool 7 set in the spool winding unit 6 via the wire receiving unit 4 and the dancer roller device 11 is to be performed, the electromagnetic 25 valve is switched and the return spring 21h causes the 18 movable pressing body 21g to move away from the fixed pressing body 21b. Unless there is an anomaly (such as an undulation phenomenon or a cut wire) in the winding process of the welding wire 5, the aforementioned state where the 5 movable pressing body 21g is kept distant from the fixed pressing body 21b is continuously maintained throughout the course of the winding process. Although the piston chamber 21e is provided only on one side of each of the entrance-side wire catcher 21 and the exit-side wire catcher 22 in 10 this embodiment of the present invention, an alternative configuration in which piston chambers 21e are provided on opposite sides of the welding wire 5 is also permissible. Furthermore, although the entrance-side wire catcher 21 and the exit-side wire catcher 22 are each configured to nip the 15 running welding wire 5 from the left and right sides, an alternative configuration in which the welding wire 5 is nipped from above and below is also permissible. Moreover, the wire catchers are not limited to the above configurations so long as they are capable of nipping a 20 running welding wire.
In the case of the welding-wire rewinding apparatus 1 according to the embodiment of the present invention, if the welding wire 5 is cut by the occurrence of excessive tension due to a certain reason, the operation of the welding-wire 25 rewinding apparatus 1 is stopped in response to a signal 19 output from a wire-cut detection sensor 23, to be described below, that detects that the welding wire 5 is cut, whereby the feeding and the winding of the welding wire 5 are stopped. It is needless to say that, even when the 5 operation of the welding-wire rewinding apparatus 1 is stopped, air pressure with a predetermined pressure value is supplied to the piston chambers 21e in the entrance-side and exit-side wire catchers 21 and 22 via the electromagnetic valves, as described above.
10 As shown in Figs. 3A and 3B, the wire-cut detection sensor 23 includes an electric bar 23a bridged laterally in a direction orthogonal to the feeding direction of the welding wire 5 and disposed above the welding wire 5 fed from the bobbin 3 set in the wire feeding unit 2. The 15 electric bar 23a receives electric current when the cut welding wire 5 swung around by the bobbin 3 comes into contact therewith, and sends the electric current as a welding-wire cut signal, via a lead wire 23b, to the control board (not shown), which synchronously controls the driving 20 sources of the welding-wire rewinding apparatus 1. The electric bar 23a may be disposed at any position where a cut welding wire can come into contact therewith. Although the electric bar 23a is preferably bridged laterally in a direction orthogonal to the wire feeding direction and 25 disposed above the welding wire, as mentioned above, the 20 disposition thereof is not limited.
As described above, the wire-cut detection sensor 23 in the welding-wire rewinding apparatus 1 according to the above embodiment includes the electric bar 23a. However, 5 the wire-cut detection sensor is not limited to the type having such a configuration and may alternatively be, for example, a wire-cut detection sensor having one of the configurations shown in Figs. 4A and 4B.
Specifically, a wire-cut detection sensor 24 shown in 10 Fig. 4A includes a stopper 24b at an upper end thereof, and also includes a slidably-descendable sliding rod 24a having a roller 24c, which is rotatably in contact with the welding wire 5, at a lower end thereof. The sliding rod 24a is supported in a vertically slidable manner by a rod-15 supporting member 24d having a stopper contact surface 24e with which a lower surface of the stopper 24b is in contact. Furthermore, there is also provided a limit switch 24f that detects that the welding wire 5 is cut in accordance with a descent of the sliding rod 24a, which descends when the 20 welding wire 5 is cut, and sends the detected cut signal to the control board (not shown) that controls the operation of the welding-wire rewinding apparatus 1, so as to stop the operation of the welding-wire rewinding apparatus 1.
A wire-cut detection sensor 25 shown in Fig. 4B 25 includes a rotating rod 25a whose intermediate section 21 between one end and the other end thereof is rotatably supported by a rotatably-supporting section 25c and having a roller 25b, which is rotatably in contact with the welding wire 5, at the one end thereof. Furthermore, there is also 5 provided a limit switch 25d that detects that the welding wire 5 is cut by coming into contact with the other end of the rotating rod 25a, which rotates when the welding wire 5 is cut, and sends the detected cut signal to the control board (not shown) that controls the operation of the 10 welding-wire rewinding apparatus 1, so as to stop the operation of the welding-wire rewinding apparatus 1. Reference numeral 25e denotes a stopper that regulates the lowermost rotational position of the rotating rod 25a.
The operation of the welding-wire rewinding apparatus 1 15 having the above configuration for implementing the welding-wire rewinding method according to the present invention will be described below. Specifically, when the operation of the welding-wire rewinding apparatus 1 is commenced by operating the control board (not shown), the welding wire 5 20 fed from the bobbin 3 by the wire feeding unit 2 is received by the wire receiving unit 4. The welding wire 5 exiting the wire receiving unit 4 travels through the entrance-side wire catcher 21, the fixed roller 12 and the movable roller 13 of the dancer roller device 11, then through the fixed 25 roller 12, the exit-side wire catcher 22, and the casting 22 roller 8 so as to be rewound by being wound around the spool 7 set in the spool winding unit 6.
When the winding process of the welding wire 5 by the spool 7 is completed by a continuous operation of the 5 welding-wire rewinding apparatus 1, the operation of the welding-wire rewinding apparatus 1 is stopped and the entrance-side wire catcher 21 and the exit-side wire catcher 22 nip the welding wire 5 near the entrance side and the exit side thereof in the dancer roller device 11. Then, a 10 process of setting a new spool 7 in the spool winding unit 6 and winding the welding wire 5 around the newly set spool 7 is commenced, and this process is repeatedly performed. It is needless to say that when the welding wire 5 wound around the bobbin 3 is entirely rewound around the spool 7, the 15 operation of the welding-wire rewinding apparatus 1 is stopped.
Then, after performing a welding-wire setting process of setting a new bobbin 3, around which a welding wire is wound, in the wire feeding unit 2 and guiding the welding 20 wire 5 pulled out from the new bobbin 3 to the spool 7 set in the spool winding unit 6 via the wire receiving unit 4 and the dancer roller device 11, the operation of the welding-wire rewinding apparatus 1 is commenced.
When an undulation phenomenon occurs in the running 25 welding wire 5 during the above-described rewinding process 23 of the welding wire 5 in the welding-wire rewinding apparatus 1, the entrance-side wire catcher 21 provided near the entrance side of the welding wire 5 in the dancer roller device 11 and the exit-side wire catcher 22 provided near 5 the exit side are actuated so as to nip the welding wire 5 in a slidable manner, thereby eliminating the undulation phenomenon in the welding wire 5 (the nipping force applied to the welding wire 5 is released after the elimination of the undulation phenomenon) and controlling the tension 10 thereof. Consequently, a decrease in the tension of the welding wire 5 caused by an undulation phenomenon is prevented, thereby preventing the product quality of the welding wire 5 wound around the spool 7 from being lowered. In this case, since the undulation phenomenon can be 15 eliminated while continuing the welding-wire rewinding process, the productivity is not lowered.
Furthermore, even when the operation of the welding-wire rewinding apparatus 1 is stopped upon completion of the welding-wire rewinding process, because the welding wire 5 20 is nipped by the entrance-side wire catcher 21 and the exit-side wire catcher 22, the tension between near the entrance side and the exit side of the welding wire 5, which is hooked around the fixed roller 12 and the movable roller 13 of the dancer roller device 11, can be properly maintained. 25 Accordingly, since it is not necessary to adjust the tension 24 of the welding wire 5 when commencing a process of winding the welding wire 5 around a new spool 7, the winding process of the welding wire 5 can be commenced within a short period of time, thereby significantly contributing to enhanced 5 rewinding efficiency of the welding wire 5.
Furthermore, even when the feeding and the winding of the welding wire 5 are stopped upon stoppage of the operation of the welding-wire rewinding apparatus 1 in response to a signal output from the wire-cut detection 10 sensor 23 that detects that the welding wire 5 is cut, the entrance-side wire catcher 21 and the exit-side wire catcher 22 nip near the entrance side and the exit side of the welding wire 5 hooked around the fixed roller 12 and the movable roller 13 of the dancer roller device 11.
15 With the nipping of the welding wire 5 near the entrance side and the exit side thereof, the welding wire 5 hooked around the fixed roller 12 and the movable roller 13 receives certain tension so that the welding wire 5 hooked around the fixed roller 12 and the movable roller 13 is 20 prevented from sagging or from being detached from the fixed roller 12 and the movable roller 13. This eliminates the need for hooking the welding wire 5 around the fixed roller 12 and the movable roller 13 after restoring a cut welding wire 5 and thus allows the winding process of the welding 25 wire 5 to be commenced within a short period of time, 25 thereby significantly contributing to enhanced rewinding efficiency of the welding wire 5. The nipping force applied to the welding wire 5 by the entrance-side and exit-side wire catchers 21 and 22 when the operation of the welding-5 wire rewinding apparatus 1 is stopped at the time when the welding wire 5 is cut or when the welding-wire rewinding process is completed may be greater than or equal to a nipping force that permits sliding of the welding wire 5 when eliminating an undulation phenomenon in the running 10 welding wire 5. The welding wire 5 may be incapable of sliding at such a time of stoppage of the operation.
The welding-wire rewinding method according to the above embodiment of the present invention is described as being applied to the dancer roller device with the 15 configuration according to the aforementioned second related-art example as an example. However, since the present invention is not limited to such a configuration and may also be applied to, for example, the dancer roller device according to the aforementioned first related-art 20 example, the invention is not limited to the configuration according to the above embodiment and is freely modifiable within the scope not deviating from the technical idea of the invention. Furthermore, although the above description is directed to a mode for rewinding a flux-cored welding 25 wire, the invention can be applied to a mode for rewinding 26 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 efficiently be wound around a spool having a diameter smaller than that of 5 the bobbin. Therefore, the invention is suitable for an apparatus and a method for rewinding a welding wire manufactured in a highly efficient production line, such as a flux-cored welding wire manufactured by continuously performing a step of molding a coil-like hoop (steel strip) 10 into a U-shaped steep strip by rewinding the hoop, a step of filling the hoop with the flux in the course of the molding step, and a step of winding the tubular-molded wire filled with the flux while further extending the wire in the same line.

Claims (6)

1. Een werkwijze voor het opnieuw wikkelen van een lasdraad, waarin een lasdraad toegevoerd van een haspel op een spoel wordt gewikkeld die een kleinere diameter heeft dan die van de haspel, in een toestand waarin de lasdraad om een vaste rol en een beweegbare rol van een 5 dansrolinrichting is gehaakt, waarbij de werkwijze uitgevoerd wordt terwijl de spanning aan een ingangskant en een uitgangskant van de lasdraad in de dansrolinrichting wordt geregeld en gelijktijdig de snelheden van aandrijfbronnen voor en achter de dansrolinrichting geregeld worden, waarbij draadvangers die de lasdraad inklemmen terwijl ze glijden van de 10 lasdraad toestaan respectievelijk voorzien zijn in de buurt van zowel de ingangskant als de uitgangskant van de lasdraad in de dansrolinrichting.A method for rewinding a welding wire, wherein a welding wire supplied from a reel is wound onto a spool having a smaller diameter than that of the reel, in a state where the welding wire is around a fixed roll and a movable roll of a dance roller device is hooked, wherein the method is performed while the voltage on an input side and an output side of the welding wire in the dance roller device is controlled and simultaneously the speeds of drive sources in front of and behind the dance roller device are controlled, wherein wire catchers clamping the welding wire while allowing the welding wire to slide or be provided in the vicinity of both the input side and the output side of the welding wire in the dance roll device. 2. De werkwijze voor het opnieuw wikkelen van een lasdraad volgens Conclusie 1, waarbij de draadvangers elk een druklichaam omvatten die de lasdraad inklemt.The method for rewinding a welding wire according to Claim 1, wherein the wire catchers each comprise a pressure body that clamps the welding wire. 3. De werkwijze voor het opnieuw wikkelen van een lasdraad volgens één van Conclusies 1 en 2, waarbij het toevoeren en wikkelen van de lasdraad in reactie op een signaal afgegeven door een draadbreukdetectiesensor die detecteert dat de lasdraad gebroken is worden gestopt, en de draadvangers worden geactiveerd zodat ze de lasdraad 20 inklemmen.The method for rewinding a welding wire according to any of Claims 1 and 2, wherein feeding and winding the welding wire in response to a signal output from a wire break detection sensor that detects that the welding wire is broken are stopped, and the wire catchers are stopped activated so that they clamp the welding wire 20. 4. De werkwijze voor het opnieuw wikkelen van een lasdraad volgens Conclusie 3, de draadvangers elk omvattende een druklichaam dat de lasdraad inklemt en een middel tot het activeren van het druklichaam ingericht om het druklichaam te activeren, en 25 de draadbreukdetectiesensor omvattende een electrische staaf die het middel tot het activeren van het druklichaam activeert door elektriciteit te ontvangen op basis van contact met de gebroken lasdraad.4. The method for rewinding a welding wire according to Claim 3, the wire catchers each comprising a pressure body clamping the welding wire and a means for activating the pressure body adapted to activate the pressure body, and the wire break detection sensor comprising an electric rod which the means for activating the pressure body activates by receiving electricity based on contact with the broken welding wire. 5. De werkwijze voor het opnieuw wikkelen van een lasdraad volgens Conclusie 3, de draadbreukdetectiesensor omvattende een stopper aan een bovenkant daarvan, een glijdende staaf, die glijdend kan dalen, met een rol, die draaibaar in contact is met de lasdraad, aan een onderkant daarvan, een 5 onderdeel voor het ondersteunen van een staaf, dat de glijdende staaf glijdend ondersteunt en dat een stoppercontactoppervlak heeft, en een begrenzerschakelaar die een daling detecteert van de glijdende staaf, die daalt wanneer de lasdraad gebroken is, en waarin de sensor een middel tot het activeren van een druklichaam activeert, dat ingericht is om het 10 druklichaam te activeren.The method for rewinding a welding wire according to Claim 3, the wire break detection sensor comprising a stopper on a top thereof, a sliding rod that can slide down, with a roll rotatably in contact with the welding wire, on a bottom thereof, a member for supporting a bar that slidably supports the sliding bar and that has a stopper contact surface, and a limiter switch that detects a fall of the sliding bar that drops when the welding wire is broken, and wherein the sensor has a means until activating a pressure body, which is adapted to activate the pressure body. 6. De werkwijze voor het opnieuw wikkelen van een lasdraad volgens Conclusie 3, waarin de draadbreukdetectiesensor een roterende staaf omvat waarvan het middendeel tussen een uiteinde en een ander uiteinde daarvan draaibaar ondersteund wordt door een sectie ter draaibare ondersteuning en 15 die een rol omvat, die draaibaar in contact is met de lasdraad, aan het ene uiteinde daarvan, en een begrenzerschakelaar die in contact komt met het ander uiteinde van de roterende staaf, welke roteert wanneer de lasdraad gebroken is, en een middel tot het activeren van een druklichaam activeert, dat ingericht is om het druklichaam te activeren.The method for rewinding a welding wire according to Claim 3, wherein the wire break detection sensor comprises a rotating rod, the middle part of which is rotatably supported between one end and another end thereof by a rotatable support section and which comprises a roller, which is rotatably in contact with the welding wire, at one end thereof, and a limiter switch that contacts the other end of the rotating rod, which rotates when the welding wire is broken, and activates a means for activating a pressure body, which is arranged to activate the pressure body.
NL2004380A 2009-03-23 2010-03-11 Welding-wire rewinding method. NL2004380C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009070036A JP2010222088A (en) 2009-03-23 2009-03-23 Welding wire rewinding method
JP2009070036 2009-03-23

Publications (2)

Publication Number Publication Date
NL2004380A NL2004380A (en) 2010-09-27
NL2004380C2 true NL2004380C2 (en) 2012-06-05

Family

ID=42769555

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2004380A NL2004380C2 (en) 2009-03-23 2010-03-11 Welding-wire rewinding method.

Country Status (4)

Country Link
JP (1) JP2010222088A (en)
KR (1) KR101169858B1 (en)
CN (1) CN101844709B (en)
NL (1) NL2004380C2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5673125B2 (en) * 2010-11-22 2015-02-18 株式会社神津製作所 Winding device
CN103273173B (en) * 2013-05-27 2016-01-27 浙江正和造船有限公司 The recovering tray winding apparatus of welding wire
CN103272968B (en) * 2013-06-08 2015-05-20 天津三英焊业股份有限公司 Section cutting machine of flux-cored wires
KR101721326B1 (en) * 2015-08-11 2017-03-29 두산중공업 주식회사 Guide apparatus of superconducting wire
FR3064934A1 (en) * 2017-04-11 2018-10-12 Compagnie Generale Des Etablissements Michelin METAL MONOFILAMENT VOLTAGE REGULATION INSTALLATION AND METAL MONOFILAMENT WINDING
CN106964666A (en) * 2017-04-28 2017-07-21 天津市永昌焊丝有限公司 A kind of welding wire adjustment device for winding

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860657U (en) * 1981-10-16 1983-04-23 株式会社神戸製鋼所 dancer roller device
AU643143B2 (en) * 1991-06-21 1993-11-04 Sumitomo Heavy Industries Ltd. A method of and an apparatus for producing wire
JPH08273454A (en) * 1995-04-03 1996-10-18 Sumitomo Wiring Syst Ltd Electric wire feeding device
JP3106294B2 (en) 1996-07-23 2000-11-06 株式会社東京精密 Wire saw wire disconnection detector
DE19905860A1 (en) * 1999-02-12 2000-08-17 Schlafhorst & Co W Method for operating a work station of a textile machine producing cross-wound bobbins
WO2003051547A1 (en) * 2001-12-19 2003-06-26 Byong Seop Yoo Continuing rolling apparatus for wire
JP3705359B2 (en) 2001-12-26 2005-10-12 信之 竹本 Disconnection detection device
CN2709080Y (en) * 2004-02-17 2005-07-13 河南省西工机电设备有限公司 Solder wire feeding and winding machine
CN201010391Y (en) * 2007-04-04 2008-01-23 郑州恒杰实业有限公司 Thread drawing machine automatic adjusting vertical lifting tension

Also Published As

Publication number Publication date
KR20100106237A (en) 2010-10-01
CN101844709B (en) 2012-10-03
KR101169858B1 (en) 2012-07-30
CN101844709A (en) 2010-09-29
JP2010222088A (en) 2010-10-07
NL2004380A (en) 2010-09-27

Similar Documents

Publication Publication Date Title
NL2004380C2 (en) Welding-wire rewinding method.
US10604284B2 (en) Stretch wrapping apparatus and method
JP6109844B2 (en) System and method for supplying metal wire with constant tension
JP5974107B2 (en) Aggressive feeding device for feeding metal wire with constant tension
US20130001349A1 (en) Unreeling assembly, particularly for labeling devices
JP2007204191A (en) Yarn take-up device
EP3865441B1 (en) Yarn winding machine
KR20180126952A (en) Apparatus for wire supplying control
US10246284B2 (en) Machine for winding of pre-stretched film reels
KR20010094274A (en) Slitter-rewinder
EP2866236B1 (en) Device for automatic wire tension adjustments during the various steps of winding in machines for winding electric coils
CN112424100B (en) Yarn winding machine
JP2017030951A (en) Automatic tape application method and unit
US8833218B2 (en) Method in turn-up of reeling of fiber webs and a turn-up device for a reel-up of fiber webs
JP5206162B2 (en) Filament winding equipment
JPH08119499A (en) Accumulator
JP2000301234A (en) Method and equipment for coiling
JP2774302B2 (en) Akium roll device
JP2010137301A (en) Continuous sheet feeder
JPH05253617A (en) Guide apparatus for taking out wire rod
JP3767128B2 (en) Sheet unwinding machine
JP2006347639A (en) Long member feeding mechanism
JPH07290321A (en) Wire feeding device for wire electric discharge machine
WO2024039484A1 (en) Single web automatic splicing unwind machine and method
JPH0534123B2 (en)