JP2012082023A - Welding wire rewinding device and welding wire rewinding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding wire rewinding device capable of keeping the plastic deformation constant even when applied to welding wire and keeping the tension applied when wire is rewound constant.SOLUTION: In the welding wire rewinding device 1 equipped with a wire feeder 2, a dancer roller 10, and a wire winder 50, the dancer roller 10 includes a fixed pulley 11 and a movable pulley 12 for winding welding wire W, a support mechanism 14 for supporting the movable pulley, a sensor 19 for detecting the position of the movable pulley, a pushing mechanism 20 for pushing the movable roller side, and a wire speed detection mechanism 30 for detecting the speed of the welding wire W. The pushing mechanism 20 has an upper side wheel 21, a lower side wheel 22, a tensioning and laying material 23 that is placed between the upper side wheel and the lower side wheel and engages with the movable pulley supported by the supporting mechanism, a balance weight 24 held on the other side of the tensioning and laying material, a cylinder mechanism 25 for pushing the tensioning and laying material, and a control mechanism 26 for performing control.

Description

  The present invention relates to a welding wire rewinding device and a welding wire rewinding method that unwinds a welding wire wound around a bobbin and rewinds the welding wire to a spool having a smaller diameter than the bobbin.

  Generally, 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 And a dancer roller machine installed between the wire feeding machine and the spool winder. The dancer roller machine used here is used to measure fluctuations in the wire length between the winding machine and the winding machine caused by fluctuations in the rewinding speed between the wire feeding machine and the spool winding machine, wire elongation, etc. It absorbs and functions to keep the tension of the welding wire within a predetermined range. As a device for rewinding a wire provided with a conventional dancer roller machine, devices having various configurations as described below are disclosed.

  First, the wire winding device described in Patent Document 1 sandwiches a wire fed from a wire supply source with a wire pressing piece at each position where the wire is loosened while winding the wire around the workpiece. The feeding is stopped, and further, the fixed pulley and the two moving pulleys are moved to change the straight path of the wire to the curved uneven path to remove the looseness of the wire.

  Moreover, in order to give tension | tensile_strength to a wire, the wire winding apparatus described in patent document 2 continues giving resistance to a wire with a brake roller. In this wire winding device, when the speed of the wire is constant or stopped, the torque motor is controlled between the brake roller and the wire bobbin so that the moving pulley is at the uppermost position of the rail guide, and the wire has a moving pulley. The wire tension is controlled to be equal to the sum of the weight and the repulsive force of the spring. When the wire speed is switched from high speed to low speed, the wire take-up device causes loosening of the wire between the brake roller and the wire bobbin, but the moving pulley descends to eliminate the loosening of the wire. At this time, the tension of the wire is configured to be only the weight of the movable pulley.

  Furthermore, the wire winding device described in Patent Document 3 has a configuration in which the wire body is wound around a winding bobbin via a dancer pulley device and then via a plurality of pressing pulleys. Here, the dancer pulley device is composed of a fixed pulley and an operating pulley that is close to or away from the fixed pulley, and absorbs relatively long-term fluctuations in tension generated in the wire rod being wound. In addition, the minute tension fluctuations that cannot be absorbed by the dancer pulley device are absorbed by the pressure roller by changing the wire path from a straight line to a curved line. The pressing roller is a mechanism that adjusts the pressing force with a spring.

  And in the apparatus of patent document 4, as a method of extending | stretching a filament from the reel by which the several filament was wound up, the structure by which a filament is wound up via a dancer roller and an accumulator It has become. The dancer roller is tensioned to pull the striatum with a spring. The accumulator is composed of two groups of pulleys, and the pulley is a mechanism that applies a force so as to apply tension to the wire with a spring or a weight.

  Furthermore, in the apparatus described in Patent Document 5, the winding drive motor rotates the winding drum in a predetermined direction, and the wire is wound. In this apparatus, the wire is rotated so that the tensioning roller sends the wire toward the load, thereby adjusting the wire tension between the winding drum and the roller.

Japanese Patent Laid-Open No. 06-321427 JP 2007-268631 A JP 05-000768 A Japanese Patent Laid-Open No. 03-200672 Japanese Patent Laid-Open No. 04-053759

However, the conventional apparatuses described above have the following problems.
That is, in the apparatus of Patent Document 1, the wire feeding is stopped during rewinding to remove the looseness of the wire, and the production is instantaneously stopped, resulting in a decrease in productivity. Further, since the operation roller for adjusting the back tension operates so as to sandwich the wire between the fixed roller and the wire, tension is applied to the wire, which may cause plastic deformation of the wire. In particular, in a welding wire, it is important for quality that the straightness of the wire is constant, and it is difficult to apply tension by sandwiching the welding wire.

  In the device of Patent Document 2, since resistance is always given to the wire by the brake roller, there is a concern that the wire surface may be scratched or rough. For a welding wire, scratches and roughness on the surface may be fatal as product quality, making it difficult to apply the present technology to the welding wire. In addition, when the wire feed rate is constant, what gives tension to the wire is mainly the repulsive force due to the spring at the upper end of the rail guide, but the spring is added to the wire because the repulsive force fluctuates due to its expansion and contraction length. The tension is always variable and unstable.

  When the wire feed speed is reduced from high speed to low speed, the moving pulley descends. At this time, the path of the wire passing through the fixed roller and the moving pulley is always fluctuating, and the bending added to the wire ( Plastic deformation) is always variable, and the wire shape (straightness) varies. In a welding wire, it is important in quality that the straightness of the wire is stable (constant), and from this point, the apparatus is difficult to apply to the welding wire.

  The apparatus of Patent Document 3 is a mechanism that keeps the tension of the wire by sandwiching the wire with a plurality of pressing pulleys and changing the path of the wire in a curved shape with respect to a tension fluctuation of a relatively short cycle of the wire. However, in welding wires, it is important to keep the wire bending (plastic deformation) constant, and changing the wire path from a straight line to a curved line impairs the quality of the welding wire. Become. Further, the pressure of the pressing roller is determined by the expansion and contraction of the spring, but since the repulsive force varies depending on the expansion and contraction length, the tension applied to the wire becomes variable.

  In the device of Patent Document 4, the dancer roller and the accumulator use a spring to adjust the wire tension. However, since the repulsive force fluctuates due to the expansion and contraction length of the spring, the tension applied to the wire becomes variable. End up. In addition, the dancer roller moves up and down with respect to the fixed roller. However, since the wire path varies depending on the position of the dancer roller, the straightness of the wire may be impaired. Since it is important in terms of quality that the straightness is stable (constant) for the welding wire, it is difficult to apply the present technology to the welding wire.

  In the apparatus of Patent Document 5, since the tension applying roller rotates so as to oppose the wire feeding direction and tension is applied to the wire, a frictional resistance is generated between the wire and the roller. For this reason, there is a concern that the wire surface may be scratched or roughened. In a welding wire, scratches and roughness on the surface of the wire impair product quality, and it is difficult to apply the present technology to the welding wire.

  The present invention has been devised in view of the above-described problems, and a welding wire rewinding device that can keep plastic deformation constant even when applied to a welding wire, and can maintain constant tension applied when rewinding, and It is an object to provide a welding wire rewinding method.

  The welding wire rewinding device according to the present invention for solving the above-described problems is configured as follows. Namely, a bobbin around which a welding wire is wound is rotatably installed, and a wire feeding machine that feeds the welding wire by driving a feeding rotation drive unit, and a dancer that keeps the tension of the welding wire fed from the bobbin of the wire feeding machine constant. Welding wire rewinding comprising: a roller machine; and a wire winder that rotatably rotates a spool for winding the welding wire via the dancer roller machine and that is rotated in a winding direction by a winding rotation drive unit In the apparatus, the dancer roller machine includes a plurality of fixed pulleys and moving pulleys, each of which includes a plurality of pulleys that are spaced apart from each other so as to wind the welding wire fed from the bobbin. Supports the movable pulley so that it can rotate and supports the fixed pulley so that it can be moved close to and away from the fixed pulley. A mechanism for detecting the position of the movable pulley, a pushing mechanism for adjusting a distance between the movable roller and the fixed roller, a fixed pulley including the plurality of pulleys, and a movable pulley including the plurality of pulleys. A wire speed detection mechanism is provided that detects the speed by winding the welding wire that has passed between them on a winding pulley.

  Furthermore, the welding wire rewinding device includes an upper wheel and a lower wheel, the pressing mechanism being spaced apart along the direction of the welding wire wound around the fixed pulley and the moving pulley, A tension member that is spanned between the upper wheel and the lower wheel and that engages a moving pulley supported by the support mechanism on one side between the upper wheel and the lower wheel, and a weight balance with respect to the moving pulley. So that the balance material held on the other side of the tension member spanned between the upper wheel and the lower wheel and the position of the movable pulley are set to a preset position. The cylinder mechanism that is adjusted by pushing, and the detection position of the moving pulley by the sensor is compared with the set position from the set position to the fixed pulley side. When it is determined that the position has approached, the control to decelerate the feeding rotation drive unit from the current speed is performed, and the detection position of the moving pulley by the sensor is compared with the set position from the set position. When it is determined that the position is away from the fixed pulley side, a control mechanism is provided that performs control so as to accelerate the feeding rotation drive unit from the current speed.

  With this configuration, the welding wire rewinding device rotates the bobbin by the rotational drive of the feeding rotation driving unit from the wire feeding machine and feeds the welding wire. The welding wire rewinding device detects the wire speed when the welding wire is wound between the fixed pulley and the moving pulley of the dancer roller machine and is wound around the winding pulley while maintaining a constant tension. Detected by mechanism. The welding wire rewinding device winds a welding wire from a winding pulley via a dancer roller machine onto a spool of a wire winder by a rotational drive of a winding rotation drive unit. When the dancer roller machine is wound between the fixed pulley and the moving pulley, the moving pulley is supported by the support mechanism so as to be close to and away from the fixed pulley, and the pushing mechanism is set at the set position of the moving pulley. Adjusted and held by The push mechanism engages a movable pulley supported by the support mechanism with a tension member such as a chain spanned between the upper wheel and the lower wheel installed at a predetermined interval, and the position of the tension material on the other side Hold the balance weight. Therefore, the position of the movable pulley engaged with the tension member can be adjusted even if it is pressed with a small force by the cylinder mechanism that is engaged with the tension member on the balance weight side. Then, the welding wire rewinding device decelerates the rotational drive of the feeding rotation drive unit from the current speed based on the position of the moving pulley detected by the sensor by the control mechanism in comparison with a preset set position. The tension of the welding wire is always set to be appropriate by adjusting the position of the moving pulley to the set position by controlling or accelerating from the current speed.

Further, in the welding wire rewinding device, the support mechanism supports a moving guide rail disposed on the left and right of the moving pulley, a moving wheel moving along the moving guide rail, and the moving wheel. It is good also as providing the support frame which supports the said movement pulley rotatably.
With such a configuration, the welding wire rewinding device smoothly moves the support frame along the moving guide rail by the support frame that rotatably supports the moving pulley moving the moving wheel along the moving guide rail. can do.

Further, in the welding wire rewinding device, the pushing mechanism is configured by a first lower wheel and a second lower wheel in which the lower wheel is arranged in parallel at a position spaced apart from the upper wheel by a predetermined distance. Also good.
With this configuration, the welding wire rewinding device is configured such that the lower wheel of the push mechanism is composed of the first lower wheel and the second lower wheel, and the diameter of the lower wheel can be reduced. The movement range can be widened by taking a wide space on the side.

Further, in the welding wire rewinding device, it is advantageous that the wire speed detection mechanism is such that the wire contact surface of the winding pulley has a winding width surface wider than twice the diameter of the welding wire.
With this configuration, since the wire contact surface of the winding pulley is a winding width surface wider than twice the welding wire, when the welding wire rewinding device is wound around the welding wire and pulled toward the spool side, There is no contact with each other at any position where the surface of the welding wire is looped.

In the welding wire rewinding device, the wire speed detection mechanism arranges the installation position of the winding pulley in accordance with the height of the installation position of the spool, and the welding wire is arranged on the rotating shaft of the winding pulley. It is good also as a structure which installed the sensor which measures the speed of this.
With such a configuration, the welding wire rewinding device can measure the feed rate of the welding wire by measuring the rotational speed of the winding pulley around which the welding wire is rotated, and at the same time the height of the spool installation position. Since the winding pulley is also arranged, the winding height of the spool is uniform, and the load on the welding wire can be reduced.

In the welding wire rewinding device, whether the winding diameter of the winding pulley around which the welding wire is wound, the winding diameter of the fixed pulley, and the winding diameter of the moving pulley are the same as the winding diameter of the spool. Or you may form larger than it.
With this configuration, the welding wire rewinding device can be wound around the spool without attaching unnecessary wrinkles because the diameter of each pulley is equal to or greater than that.

Furthermore, in the welding wire rewinding device, the welding wire has the fixed pulley, the moving pulley, the winding pulley, and the pulley when the direction of the welding wire unwound from the bobbin is an abdominal direction. The winding direction may be set so that the spool is wound in the abdomen direction.
With this configuration, the welding wire rewinding device does not apply an unnecessary load to the welding wire when rewinding from the bobbin to the spool.

In the welding wire rewinding device, the welding wire may be a flux wire.
The welding wire rewinding device can rewind from a bobbin to a spool without applying an unnecessary load and without damaging the surface even if the flux wire is easily plastically deformed.

  Further, the welding wire rewinding device includes a wire feeding machine that rotatably installs a bobbin around which the welding wire is wound and feeds the welding wire by driving a feeding rotation driving unit, and a welding wire fed from the bobbin of the wire feeding machine Is installed between a fixed pulley and a moving pulley to maintain a constant tension, and a spool for winding the welding wire via the dancer roller machine is rotatably installed and wound by a winding rotation drive unit. A welding wire rewinding device comprising: a wire winder that rotates in a take-up direction; and a direction in which the moving pulley approaches a fixed pulley from a preset position, or the moving pulley moves away from the fixed pulley. A sensor for detecting the position of the moving pulley in the moving direction, and the detection of this sensor. When the position of the moved pulley approaches the fixed pulley side from the set position, the feeding rotation drive unit is decelerated from the current speed, and the position of the moved pulley detected by the sensor is the set position. It is good also as a structure provided with the control mechanism which controls so that the said extending | stretching rotation drive part may be accelerated from the present speed, when moving away from the said fixed pulley side.

  With this configuration, the welding wire rewinding device detects the position of the moving pulley with a sensor, and determines whether the control mechanism is closer to or farther from the fixed pulley than the set position, thereby feeding out the welding wire. By controlling the rotational drive unit to decelerate or accelerate from the current speed, the tension of the welding wire can always be maintained normal.

  Further, the welding wire rewinding device includes a wire feeding machine that rotatably installs a bobbin around which the welding wire is wound and feeds the welding wire by driving a feeding rotation driving unit, and a welding wire fed from the bobbin of the wire feeding machine Is installed between a fixed pulley and a moving pulley to maintain a constant tension, and a spool for winding the welding wire via the dancer roller machine is rotatably installed and wound by a winding rotation drive unit. A welding wire rewinding device comprising: a wire winder that rotates in a take-up direction; and a direction in which the moving pulley approaches a fixed pulley from a preset position, or the moving pulley moves away from the fixed pulley. A sensor for detecting the position of the moving pulley in the moving direction, and the sensor detects the position of the moving pulley. And a configuration and a control mechanism for controlling the feeding rotary drive unit by the position of the moving pulley that. Further, in the welding wire rewinding device, the control mechanism is input to the input means for inputting the detection position of the moving pulley detected by the sensor, the storage means for storing the set position, and the input means. A determination unit that determines whether or not the detection position exceeds the set position stored in the storage unit, and the determination unit determines that the detection position has exceeded the set position toward the fixed pulley. In this case, a signal for decelerating the speed of the feeding rotation driving unit to a speed slower than a set reference speed is output to the feeding rotation driving unit, and the determination unit does not exceed the detection position. An output unit that outputs a signal at the reference speed to the feeding rotation drive unit when it is determined may be used.

  With such a configuration, the welding wire rewinding device is configured such that the position of the moving pulley detected by the sensor is input by the input unit, and the determination unit compares the position with the set position stored in advance from the storage unit, and outputs the output unit based on the comparison result. Since the speed of the feeding rotation driving unit is controlled to be reduced or set to the reference speed via the dancer, the dancer roller machine can always apply a constant tension to the welding wire.

  Further, the welding wire rewinding method according to the present invention includes a wire feeding machine that rotatably installs a bobbin around which a welding wire is wound and feeds the welding wire by driving a feeding rotation driving unit, and a bobbin of the wire feeding machine. A dancer roller machine that winds between a fixed pulley and a movable pulley that are spaced apart from each other and feeds a welding wire to be fed out and keeps the tension constant, and a spool that winds up the welding wire that is fed through the dancer roller machine In a welding wire rewinding method in which a welding wire is rewinded from the bobbin to the spool by a welding wire rewinding device, which is detachably installed and rotated in a winding direction by a winding rotation driving unit. The welding wire is fed to a dancer roller machine by the wire feeding machine, and the dancer low While performing the adjustment process of adjusting the tension of the welding wire in the machine, the dancer roller machine performs the process of winding the welding wire on the spool of the wire winding machine with the tension of the welding wire fixed, and the adjustment process includes adjusting the position of the moving pulley. When the moving pulley is out of a preset threshold range detected by a sensor, the control mechanism decelerates the reference speed of the feeding rotation drive unit, and the position of the moving pulley detected by the sensor is When the value falls within the threshold range, a step of setting the feeding rotation drive unit to a reference speed is performed.

  According to such a procedure, in the welding wire rewinding method, in the adjustment step, the position of the moving pulley is detected by a sensor, and compared with a threshold value, the speed of the welding wire fed through the feeding rotation drive unit is adjusted based on the result. By controlling in this manner, the tension in the dancer roller machine is appropriately applied to the welding wire.

The welding wire rewinding apparatus and the welding wire rewinding method according to the present invention have the following excellent effects.
The welding wire rewinding device engages a tension pulley supported by the upper wheel and the lower wheel with a moving pulley supported by a support mechanism, and a constant weight is provided to the tension member by a cylinder mechanism. The moving pulley is adjusted to be close to and away from the fixed pulley so that the pressure of the welding wire is adjusted by the control mechanism, and the position of the moving pulley detected by the sensor according to the position of the moving pulley of the welding wire driven by the feeding rotary drive unit By adjusting the feeding speed, it is possible to properly adjust the tension in the dancer roller machine.

Therefore, since the welding wire rewinding device always gives a constant tension to the welding wire by pushing the cylinder mechanism, it is possible to suppress loosening of the welding wire during rewinding and to suppress vibration caused by the loosening. Therefore, it is possible to prevent the welding wire from being disturbed due to loosening or vibration of the welding wire.
In addition, since the welding wire rewinding device does not have a configuration in which the welding wire is sandwiched between the bobbin and the spool, the plastic deformation (bending) of the welding wire can be kept constant, and the welding wire Does not cause scratches or roughness on the surface.

  In the welding wire rewinding device, the moving pulley is provided on the support frame so that the moving pulley is rotatable, and the support mechanism is configured so that the moving wheel moves along the moving guide rails arranged on the left and right of the support frame. It becomes possible to stably move the moving pulley by the moving mechanism so as to be close to and away from the fixed pulley.

  The welding wire rewinding device can reduce the diameter of the lower wheel compared to the upper wheel by using the first lower wheel and the second lower wheel provided with the lower wheel of the pushing mechanism. .

  Since the winding width surface of the winding pulley is more than twice that of the welding wire, the welding wire rewinding device does not contact the welding wires even when the welding wire is wound around the winding pulley. No damage to the shape. Further, since the rotation of the winding pulley is measured as the feed rate of the welding wire, the speed can be accurately measured.

  In the welding wire rewinding device, the winding drum diameter of the winding pulley, the winding drum diameter of the fixed pulley, and the winding drum diameter of the moving pulley are formed to be the same as or larger than the winding drum diameter of the spool. No excessive plastic deformation is caused on the welding wire to be wound. Further, even if the direction in which the welding wire is wound around each pulley is aligned in the anti-node direction, the welding wire to be wound around the spool is not subjected to excessive plastic deformation.

  In the welding wire rewinding method, in the adjustment process, the feeding rotation drive unit is controlled by comparison with a threshold value based on the state in which the position of the moving pulley is detected by a sensor, so that the welding wire is wound by loosening or vibration of the welding wire. Disturbance can be prevented, plastic deformation (bending) of the welding wire can be kept constant, and scratches and roughness are not generated on the surface of the welding wire.

It is a side view showing typically the whole welding wire rewinding device concerning the present invention. It is a figure which shows the dancer roller machine of the welding wire rewinding apparatus which concerns on this invention, (a) is a side view of a dancer roller machine, (b) is a front view of a dancer roller machine. It is a block diagram showing a control state by showing typically a dancer roller machine of a welding wire rewinding device concerning the present invention. (A)-(d) is a schematic diagram which shows the timing which switches the state which winds a welding wire around the spool of the welding wire rewinding apparatus which concerns on this invention, and the pressure of a cylinder mechanism.

Hereinafter, a welding wire rewinding device and a welding wire rewinding method according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the welding wire rewinding device 1 rewinds the welding wire W wound around the bobbin BW to the spool SP. The welding wire rewinding device 1 includes a wire feeding machine 2 that feeds the welding wire W, a dancer roller machine 10 that gives a constant tension to the welding wire W fed from the wire feeding machine 2, and a dancer machine 10 And a wire winder 50 that winds the welding wire W onto a spool. The welding wire rewinding apparatus 1 is configured to dispose the dancer roller machine 10 between the wire feeder 2 and the wire winder 50. In the welding wire rewinding apparatus 1, the drive pulses of the wire feeder 2, the wire winder 50, and the like are synchronously controlled by a control panel (not shown).

  As shown in FIG. 1, the welding wire W wound around the bobbin BW is, for example, a flux-cored wire, and a case where the diameter is in the range of 1.2 to 1.6 mm will be described as an example. The bobbin BW has a larger diameter than the spool SP to be rewinded, and winds a longer welding wire W. And the bobbin BW is installed so that it may be installed in the wire feeder 2 and fed out.

The wire feeding machine 2 installs the bobbin BW and feeds the welding wire W to the dancer roller machine 10 at a predetermined speed. The wire feeding machine 2 mainly includes an installation table 3 on which the bobbin BW is rotatably installed, and a supply rotation driving unit 4 that rotates the bobbin BW installed on the installation table 3 to feed out the welding wire W. Yes.
The installation table 3 has a general configuration having a transmission mechanism that installs the bobbin BW and rotatably holds the bobbin BW to transmit the drive from the feeding rotation driving unit 4. The feeding rotation drive unit 4 is a drive motor that rotates the bobbin BW installed on the installation table 3. For example, a motor such as a spindle motor (vector motor) or a servo motor can be used.

  As shown in FIGS. 1 and 2, the dancer roller machine 10 is configured to wind a welding wire W fed from a wire feeder 2 between a fixed pulley 11 and a moving pulley 12 to maintain a constant tension. The dancer roller machine 10 includes a fixed pulley 11 and a moving pulley 12 around which a welding wire W is wound, a support mechanism 14 that supports the moving pulley 12 so as to be close to and away from the fixed pulley 11, and a moving pulley 12 of the support mechanism 14. And a pusher mechanism 20 that adjusts the position of the moving pulley 12 supported by the support mechanism 14 and a sensor 19 that detects the position of the moveable pulley 12 moved by the pusher mechanism 20 (see FIG. 3). And a wire speed detection mechanism 30 installed at a position where the welding wire W is unwound toward the spool SP. The dancer roller machine 10 is provided with a wire catcher 9 before the welding wire W is wound around the fixed pulley 11, so that it can cope with the introduction guide of the welding wire W and the cutting of the welding wire W.

  As shown in FIGS. 2A and 2B, the fixed pulley 11 and the moving pulley 12 are spaced apart from the housing frame 13 so as to face each other. The fixed pulley 11 is configured by stacking a plurality of pulleys 11a, and is rotatably supported by a support shaft 11b so that each pulley 11a is individually rotatable. The support shaft 11 b that supports the fixed pulley 11 is fixed to the housing frame 13.

  The moving pulley 12 is configured by stacking a plurality of pulleys 12a, and is rotatably supported by a support shaft 12b fixed to the support mechanism 14 so that each pulley 12a is individually rotatable. The moving pulley 12 is configured such that the number of pulleys 12a to be overlapped is one less than the number of pulleys 11a to be overlapped with the fixed pulley 11 here.

  As shown in FIGS. 2A and 2B, the support mechanism 14 that supports the moving pulley 12 can move the moving pulley 12 close to and away from the fixed pulley 11 along the housing frame 13 (in this case, in the vertical direction). ). The support mechanism 14 includes a moving guide rail 15 installed on both sides of the moving pulley 12 along the housing frame 13, a moving wheel 16 that moves along the moving guide rail 15, and a support frame that supports the moving wheel 16. 17.

The moving guide rails 15 are installed on the left and right along the left and right frame pillars 13 a and 13 a of the frame 13. The moving guide rail 15 is not particularly limited in terms of installation length, shape, and the like, as long as the moving wheel 16 can be linearly moved up and down.
The moving wheel 16 rotates and moves along the moving guide rail 15. Here, the moving wheels 16 are arranged at four locations, but the number and size thereof are not particularly limited.

The support frame 17 rotatably supports each of the moving wheels 16 and also supports the moving pulley 12 at the center thereof. The support frame 17 includes a support arm 17a that rotatably supports the moving wheel 16, and a main body frame 17b that supports the support arm 17a and rotatably supports the moving pulley 12.
Here, the support arm 17a is installed on the left and right of the main body frame 17b, supporting the upper and lower two moving wheels 16,16. The support arm 17a is formed in a U shape here, and the same shape can be used on the left and right. Further, the main body frame 17b is formed in a rectangular shape, and the support arms 17a and 17a are fixed so that the moving wheel 16 supported by the support arm 17a protrudes on both sides. The main body frame 17b is provided with a support shaft 12b at its center for rotatably supporting the moving pulley 12.

  Here, the left and right side portions of the main body frame 17b are guided inside the movement guide rails 15 and 15, and the left and right side portions of the moving wheel 16 and the main body frame 17b are moved to the movement guide rails 15 and 15, respectively. In an engaged state, it is configured to move in the vertical direction (in the direction of approaching and separating from the fixed pulley 11) along the movement guide rails 15 and 15. With such a configuration, the moving pulley 12 may generate vibrations by rotating. However, the main body frame 17b is located on the left and right sides of the moving guide rails 15 and 15 on the sides of the moving wheel 16 and the main body frame 17b. Since it moves so as to be pinched, it is possible to move up and down while minimizing the influence of the vibration.

  As shown in FIGS. 2A and 2B, the pushing mechanism 20 pushes the support mechanism 14 that rotatably supports the moving pulley 12 in the direction of approaching and separating from the fixed pulley 11. The pushing mechanism 20 is disposed between the frame pillars 13 a and 13 a of the housing frame 13, and spans the upper wheel 21, the lower wheel 22, the upper wheel 21 and the lower wheel 22, and the movement of the support mechanism 14. The tension member 23 engaged with the pulley 12, the balance weight 24 held by the tension member 23, the cylinder mechanism 25 that pushes the tension member 23, the cylinder mechanism 25, and the feeding rotation drive unit 4 are controlled. And a control mechanism 26 (see FIG. 3).

  The upper wheel 21 is rotatably held on a wheel shaft 21a supported between the frame pillars 13a and 13a at a predetermined distance. The upper wheel 21 is installed at a position that does not contact the fixed pulley 11.

  The lower wheel 22 forms a pair with the upper wheel 21 and supports the tension member 23. Here, the lower wheel 22 includes a first lower wheel 22a and a second lower wheel 22b. Yes. The first lower wheel 22a and the second lower wheel 22b are installed on the lower frame of the housing frame 13 in parallel with 13c. The first lower wheel 22a and the second lower wheel 22b are spaced apart from each other. Here, the first lower wheel 22a and the second lower wheel 22b are rotatably installed on the lower frame 13c with an interval corresponding to the diameter of the upper wheel 21. By configuring the lower wheel 22 as the first lower wheel 22a and the second lower wheel 22b, the wheel diameter can be reduced and the moving range of the balance weight 24 and the moving pulley 12 that moves along the stretch member 23 Can be taken more widely.

  As shown in FIGS. 2A and 2B, the tension member 23 is engaged with the moving pulley 12 and pushed. The tension member 23 engages the main body frame 17b with the upper and lower ends of the main body frame 17b via the attachment members 23a on one side (hereinafter referred to as a hanging side) hung on the upper wheel 21 and the lower wheel 22. Thus, the movable pulley 12 is engaged, and the balance weight 24 is held on the other side (hereinafter referred to as the suspended other side) hung on the upper wheel 21 and the lower wheel 22. The tension member 23 is configured such that, on the other side of the suspension, the cylinder mechanism 25 is engaged, and the rod member of the cylinder mechanism 25 operates up and down in a range where the rod protrudes and retracts.

  The tension member 23 is stretched over the upper wheel 21 and the lower wheel 22, and the one engaged with the cylinder mechanism 25 is moved within a predetermined range on one side and the other side of the suspension. If it is possible, the form is not particularly limited as long as it is a long strip member such as a chain, an endless belt, or a wire. When the tension member 23 holds the balance weight 24 on the other side of the suspension and engages the cylinder mechanism 25, a weight attachment member 23 c is interposed on the upper end side of the balance weight 24. The weight attaching member 23c is limited in its shape and the like as long as the engaging portion 24a protruding to the upper end side of the balance weight 24, the tip end portion of the cylinder mechanism 25, and the tension member 23 can be attached and engaged. Here, a trapezoidal mounting bracket is used here.

  The balance weight 24 is set and held so as to have a weight equivalent to the load applied to the moving pulley 12. The balance weight 24 is not limited as long as it can apply a weight such as a metal plate. Further, the balance weight 24 can be detachably engaged with a weight having a disc shape and an engagement groove formed from the outer periphery toward the center in the locking portion 24a without releasing the engagement with the tension member 23. It is configured to be able to stop.

  The cylinder mechanism 25 pushes the tension member 23. The cylinder mechanism 25 is supported by the upper frame 13b, engages with the tension member 23 via the weight attachment member 23c, and pushes the tension member 23 with a predetermined pressure by the control mechanism 26 (see FIG. 3). It is configured to move. The cylinder mechanism 25 has a configuration in which a rod 25a, a cylinder 25b for projecting and retracting the rod 25a, and a rod 25a for projecting and retracting by applying pressure to the cylinder 25b. The structure of the cylinder mechanism 25 is limited as long as the tension member 23 can be pushed with a constant pressure even if the length of the rod 25a protruding and retracting from the cylinder 25b such as air pressure and hydraulic pressure changes. is not.

  As shown in FIG. 3, the control mechanism 26 inputs the position of the moving pulley 12 detected by the sensor 19 and controls the feeding rotation drive unit 4 based on a preset installation position (threshold value). is there. The control mechanism 26 controls the cylinder mechanism 25 based on a signal from the traverser 40 of the wire winder 50 described later. The control mechanism 26 will be described after the wire winder 50 is described.

The sensor 19 is not particularly limited in its mounting position and structure as long as it can detect the position of the moving pulley 12 and can send a signal of the detection position to the control mechanism 26.
Next, as shown in FIG. 1, the welding wire W that has passed between the fixed pulley 11 and the moving pulley 12 is wound around the winding pulley 31 and then wound around the wire winder 50.

  The winding pulley 31 is installed at a position where the welding wire W is wound once and the welding wire W is sent to the wire winder 50. This winding pulley 31 is provided with a sensor (not shown) on the rotating shaft as a wire speed detection mechanism 30 for detecting the feed speed of the welding wire W. The sensor that detects the speed of the welding wire W is configured to measure the speed of the welding wire W by measuring the number of rotations of the rotating shaft. In addition, as a means for measuring the rotation speed of the rotating shaft, a means for measuring mechanically or a means for detecting the speed from the sound (frequency) of rotating the rotating shaft can be used.

  Further, the winding pulley 31 is configured so that the wire contact surface has a winding width surface wider than twice the diameter of the welding wire W. Since the winding pulley 31 has a wide winding width surface, when the welding wire W is wound and rotated, the welding wires W do not come into contact with each other so that the surface of the welding wire W is damaged. There will be nothing at all. If the installation position of the winding pulley 31 matches the installation position of the spool SP, the winding pulley 31 does not apply an extra load to the welding wire W when the welding wire W is wound around the spool SP. It is in a state that can be smoothly wound up, and is more preferable.

  In this dancer roller machine 10, since the control mechanism 26 detects the position of the moving pulley 12 by the sensor 19 and controls the cylinder mechanism 25, the tension of the welding wire W is always kept constant and the spool is maintained. Can be sent to SP.

  As shown in FIG. 1, the wire winder 50 is for winding the welding wire W from the dancer roller machine 10 onto the spool SP. The wire winder 50 has a traverser 40 that reciprocates and moves the welding wire W in the width direction of the spool SP at predetermined intervals, and the spool SP is rotatably installed at a position where the welding wire W that is distributed by the traverser 40 is wound. And a take-up rotation drive unit 56 that rotates the spool SP installed on the spool installation table 55.

  The traverser 40 is reciprocally moved over the winding width of the spool SP so that the welding wire W is aligned and wound around the spool SP. The traverser 40 includes a guide roller 41, a reciprocating unit 42 for reciprocating a welding wire W supported by the guide roller 41 over a preset reciprocating range, and a sliding movement of the reciprocating unit 42. A guide roller 44 for guiding the welding wire W to the spool SP, a sensor (not shown), and the like are mainly provided between the slide mechanism 43 and the spool SP after the reciprocating portion 42. The speed signal of the moving speed of the reciprocating unit 42 of the traverser 40 is detected by a sensor and sent to the control mechanism 26 described later. The configuration of the traverser 40 is not limited as long as the traverser 40 can reciprocate the welding wire W at a set winding speed.

  The spool installation base 55 has a mechanism that rotatably installs the spool SP and transmits the rotational drive from the take-up rotation drive unit 56. The winding rotation driving unit 56 is a driving unit such as a spindle motor, a vector motor, a general-purpose motor, or a servo motor that rotates the spool SP at a predetermined speed.

  As described above with respect to the mechanical structure, the welding wire rewinding device 1 supports the moving pulley 12 in the dancer roller machine 10 via the cylinder mechanism 25 so as to be movable up and down, and keeps the tension applied to the welding wire W constant. Therefore, it is possible to rewind the welding wire W from the bobbin BW to the spool SP by always applying a constant tension to the welding wire W. In the welding wire rewinding apparatus 1, here, the winding drum diameter of the winding pulley 31, the winding drum diameter of the fixed pulley 11, and the winding drum diameter of the moving pulley 12 are the same as the winding drum diameter of the spool SP or It is larger than that. With this configuration, the load that causes unnecessary plastic deformation on the welding wire W is minimized.

  Next, the control mechanism 26 will be described. As shown in FIG. 3, the control mechanism 26 is based on a rotation speed control mechanism 26 </ b> A that controls the feeding rotation drive unit 4 based on the position of the moving pulley 12 detected by the sensor 19 and a signal from the traverser 40. A cylinder control mechanism 27 that controls the cylinder mechanism 25 is provided. Here, the control mechanism 26 will be described as a configuration including a display means 28 that receives a signal indicating the speed from the wire speed detection mechanism 30 and displays the signal on the display monitor 29.

  The rotation speed control mechanism 26A compares the input detection position of the moving pulley 12 with the set position, and if the detection position is closer to the fixed pulley 11 than the set position, the rotation speed control mechanism 26A Control to decelerate from the current speed of the drive unit 4 is performed. In addition, as a result of comparing the input detection position with the set position, the rotation speed control mechanism 26A determines that the current speed of the feed rotation drive unit 4 when the detection position is on the position side away from the fixed pulley from the set position. Control to accelerate more.

The rotational speed control mechanism 26A includes an input unit 26a, a storage unit 26b, a determination unit 26c, and an output unit 26d.
The input means 26 a is for inputting the value of the detected position of the moving pulley 12 detected by the sensor 19. The value of the detection position input by the input unit 26a is sent to the determination unit 26c.
The storage unit 26b stores a preset setting position (threshold value) that serves as a reference for controlling the moving pulley 12. This storage means 26b is constituted by a general means for storing any one of an analog base set by a hard disk, a memory, a volume and the like.

  The determination unit 26c compares the value of the detection position from the input unit 26a with the threshold value that is the set position stored in the storage unit 26b. As a result, the detection position approaches the fixed pulley side from the set position. In the case of the position, it is determined that the feeding speed of the welding wire W is fast, and the value of the detection position is compared with the threshold value. As a result, the detection position is at a position away from the fixed pulley side from the set position. In some cases, it is determined that the feed rate of the welding wire W is slow. Then, the determination unit 26c outputs the determination result to the output unit 26d.

  The output unit 26d receives a signal from the determination unit 26c and outputs a signal to the feeding rotation driving unit 4. When the output means 26d receives a signal indicating that the feed speed of the welding wire W is fast, the output means 26d outputs a signal for reducing the rotational speed of the feeding rotation drive unit 4, and the feed speed of the welding wire W is slow. When the signal of the determination result is received, a signal for accelerating the rotation speed of the feeding rotation drive unit 4 is output. The output means 26d outputs a signal in which the degree of acceleration and deceleration is linearly changed according to the displacement of the dancer position.

  Since the rotational speed control mechanism 26A is configured as described above, the detection position of the moving pulley 12 detected by the sensor 19 is input by the input means 26a, and the input detection position is stored in advance in the storage means 26b. The setting position (threshold value) is compared with the determination means 26c for determination, and the determination result is controlled by the signal output from the output means 26d, so that the feed rotation drive unit 4 is controlled. Therefore, between the fixed pulley 11 and the moving pulley 12 The plastic deformation of the wound welding wire can be kept constant, and a constant tension can be always applied.

  Next, the cylinder control mechanism 27 will be described. The cylinder control mechanism 27 controls the cylinder mechanism 25 when the welding wire W is wound around the spool SP. The cylinder control mechanism 27 includes a wire detection position input unit 27a, a storage unit 27b, a wire detection position determination unit 27c, and a cylinder control signal output unit 27d. The cylinder control mechanism 27 is configured here to control the cylinder mechanism 25 by a position signal (a position at which the welding wire W is slid left and right) sent from a sensor (not shown) of the traverser 40. ing.

  The wire detection position input means 27a inputs a position signal from the traverser 40 that distributes the welding wire W to the left and right within the width range of the spool SP. The position signal from the traverser 40 is, for example, a signal obtained by detecting a movement position of the reciprocating movement unit 42 that moves the welding wire W to the left and right with a sensor (not shown).

The storage means 27b is for storing a moving position to be switched in advance in order to switch the pressure of the cylinder mechanism 25 to a reference pressure or a high pressure. The storage means 27b is means for storing general data such as a hard disk and a memory. The storage means 27b includes a first switching position (switching position) for switching from the reference pressure to the high pressure on the left side of the spool SP, a second switching position (switching position) for switching from the high pressure to the reference pressure, and a right side of the spool SP. A third switching position (switching position) for switching from the reference position to the high pressure and a fourth switching position (switching position) for switching from the high pressure to the reference pressure are stored.
The switching position can be arbitrarily changed from the first switching position to the fourth switching position, and the pressure can be increased over a certain period of time from immediately before to immediately after the traverser 40 is reversed. This has the effect of suppressing the occurrence of wire vibration. Further, when the switching positions are symmetrical, it is sufficient to store two switching positions.

  The switching position stored in the storage means 27b has a time lag until the cylinder mechanism 25 is switched to the reference pressure or the high pressure by a signal, and is set by taking this time lag into consideration by calculation or calculation. Yes.

  The wire detection position determination means 27c is for comparing the movement position input from the wire detection position input means 27a with the switching position of the storage means 27b. The movement position in the sliding direction indicated by the signal received from the wire detection position input means 27a is compared with the switching position stored in the storage means 27b, so that the movement position is the first switching position or the third switching position. When the position is exceeded, it is determined that it is necessary to output a high pressure switching signal for applying a pressure at which the pressure of the cylinder mechanism 25 becomes a preset high pressure, and the moving position exceeds the second switching position and the fourth switching position number. If it is determined, it is determined that it is necessary to output a reference pressure switching signal that becomes a preset reference pressure from a high pressure. That is, the wire detection position determination means 27c determines to switch the cylinder mechanism 25 so as to apply a preset high pressure at the position (both ends) where the winding layer is further raised in the spool SP of the welding wire W, and the same winding When in the layer, it is determined to apply a preset reference pressure to the cylinder mechanism 25. The result determined by the wire detection position determination means 27c is output to the cylinder control signal output means 27d.

  Here, the cylinder control signal output means 27d outputs a signal for switching the cylinder mechanism 25 to either the reference pressure or the high pressure. This cylinder control signal output means 27d is switched so that the cylinder mechanism 25 becomes a preset reference pressure based on the determination signal (reference pressure determination signal or high pressure determination signal) received from the wire detection position determination means 27c. A switching signal or a switching signal for switching the cylinder mechanism 25 so as to achieve a set high pressure is output to the cylinder mechanism 25.

  Since the cylinder control mechanism 27 is configured as described above, a signal from the traverser 40 is input by the wire detection position input means 27a, and the cylinder mechanism 25 is set to the reference pressure or high pressure by the wire detection position determination means 27b. Control is performed to switch the pressure of the cylinder mechanism 25 by a switching signal from the cylinder control signal output means 27c.

  Further, the control mechanism 26 includes display means 28 for displaying the speed detected from the wire speed detection mechanism 30 of the dancer roller machine 10 on the display monitor 29. The display means 28 inputs a speed signal sent from the wire speed detection mechanism 30 and displays it on the display monitor 29 as a number or graph so that the operator can visually recognize it. The display means 28 can output and display the signal input to the control mechanism 26 on the display monitor 29 so that the operator can visually recognize the signal. In addition to the speed display, the signal from the wire speed detection mechanism 30 can be used in various ways such as control of the spool SP drive speed (keep the wire at a constant speed), traverse movement speed control, and the like. .

Next, the operation of the welding wire rewinding apparatus 1 will be described.
First, the welding wire rewinding apparatus 1 installs the bobbin BW on the installation base 3 of the wire feeding machine 2 and also installs the spool SP on the spool installation base 55 of the wire winder 50 so that the welding wire W is attached to the bobbin BW. And is wound around the fixed pulley 11 and the moving pulley 12 of the dancer roller machine 10, and the welding wire W is engaged with the spool SP via the dancer roller machine 10. When setting the welding wire W to each pulley, when the direction of the welding wire W unwound from the bobbin BW is the abdominal direction, the fixed pulley 11, the moving pulley 12, the winding pulley 31, In addition, the winding direction is set so that the spool SP is wound in the abdomen direction. By aligning the direction of the welding wire W in this way, it is possible to minimize the cause of plastic deformation of the welding wire W.

  And the welding wire rewinding apparatus 1 drives the bobbin of the wire feeding machine 2 by driving the feeding rotation driving unit 4 of the wire feeding machine 2 and the winding rotation driving unit 56 of the wire winding machine 50 in synchronization. The welding wire W is fed out from BW, and the tension of the welding wire W is kept constant by the dancer roller machine 10 and wound around the spool SP.

When the welding wire W passes through the dancer roller machine 10, the first pulley 11 a from the first pulley 11 a of the fixed pulley 11 to the first pulley 12 a of the moving pulley 12, the second pulley 11 a of the fixed pulley 11 to the second of the moving pulley 12. The pulley 12a is wound around the wire winder 50 side from the winding pulley via each pulley 11a of the fixed pulley 11 and each pulley 12a of the moving pulley 12.
When the welding wire W is kept in a state where the tension is kept constant by the dancer roller machine 10, the position of the moving pulley 12 is detected by the sensor 19, and the control mechanism is based on the detected position of the moving pulley. The feeding rotation drive unit 4 is controlled by the 26 rotation speed control mechanism 26A.

  That is, the rotational speed control mechanism 26A compares the setting position stored in the storage means 26b with the moving pulley 12 detected by the sensor 19 by the determining means 26c, and the detected position of the moving pulley 12 is set. When it is determined that the position is close to the fixed pulley 11 side from the position, a signal is sent from the output means 26d to the feeding rotation drive unit 4 so as to decelerate from the current speed. Further, the rotation speed control mechanism 16A compares the setting position stored in the storage unit 26b with the detection position of the moving pulley 12 detected by the sensor 19 by the determination unit 26c, and the detection position of the moving pulley 12 is When it is determined that the position moves away from the set pulley 11 with respect to the fixed pulley 11, the output means 26d sends a signal to the feeding rotation drive unit 4 so as to accelerate from the current speed.

  Therefore, the moving pulley 12 rotatably supported by the support frame 17 is engaged with the stretching member 23 by the rotational speed of the feeding rotation driving unit 4 being reduced, and the movable pulley 12 is moved from the fixed pulley 11 side. The moving wheels 16, 16, 16, 16 rotate and move along the moving guide rails 15, 15 in the direction of gradually separating. Further, the rotational speed of the feeding rotation drive unit 4 is accelerated, so that the moving pulley 12 is engaged with the tension member 23 in a direction gradually approaching from the fixed pulley 11 side. , 15 move the moving wheels 16, 16, 16, 16 to rotate.

In this way, since the control is always performed so that the position of the moving pulley is detected by the sensor 19 and brought close to the appropriate setting position, the welding wire W passing through the dancer roller machine 10 has a constant tension evenly. It has become such a thing.
Then, the welding wire W that has passed through the dancer roller machine 10 is wound around the spool SP set in the wire winder 50. The spool SP set in the wire winder 50 can wind the welding wire W in a line (one layer) at a time by the operation of the traverser 40. In the welding wire rewinding device, the control performed by the rotation speed control mechanism 26A is an adjustment step.

  The cylinder control mechanism 27 controls the pressure of the cylinder mechanism 25 in accordance with a signal sent from a sensor (not shown) provided in the traverser 40, thereby aligning the windings of the welding wire W wound around the spool SP. It is possible to wind while maintaining a more even tension. That is, as shown in FIG. 4, in the wire winder 50, the traverser 40 slides the position of the welding wire W in the lateral direction from one end of the spool SP to the other end or from the other end to the one end. As shown in FIG. 4A, when winding the first layer of the spool SP, the cylinder mechanism 25 presses the tension member 23 with a reference pressure (normal pressure) to maintain the position of the moving pulley 12. ing. At this time, the cylinder control mechanism 27 determines the signal indicating the sliding movement position when the welding wire W from the traverser 40 is distributed by the wire detection position determination means 27c input from the wire detection position input means 27a. The cylinder mechanism 25 is controlled to become the reference pressure via a signal output from the control signal output means 27d.

  Then, as shown in FIGS. 4A and 4B, it is determined that the signal indicating the moving position in the sliding direction from the traverser 40 exceeds the switching position (first switching position) of the storage means 27b. In other words, the cylinder mechanism 25 is switched when the welding wire W is located at the position W2 from the other end W1 of the spool. That is, when it is determined that the movement position input from the wire detection position input means 27a exceeds the switching position (first switching position) stored in the storage means 27b by the wire detection position determination means 27c. In addition, it is determined that the pressure of the cylinder mechanism 25 is switched to a high pressure, and a signal for switching the pressure of the cylinder mechanism 25 from the reference pressure to the high pressure is output from the cylinder control signal output means 27d. In the cylinder control mechanism 27, when controlling the pressure of the cylinder mechanism 25 from the cylinder control signal output means 27d, it is necessary to consider a time lag in which the pressure is changed by outputting a signal. Therefore, the cylinder control mechanism 27 calculates in advance the relationship between the moving speed of the slide of the traverser 40 and the switching position in advance, and in the layer wound around the spool SP, the cylinder control mechanism 27 is positioned at the position W1 to W2 in a timely manner. It is preferable that the switching position is set by checking whether the pressure of the mechanism 25 can be switched. The setting of the switching position is preferably set in advance from all of the first switching position to the fourth switching position.

  When the pressure is switched from the reference pressure to the high pressure, the cylinder mechanism 25 applies a force in a direction in which the pressure pushing the engaged tension member 23 is momentarily increased. At this time, the moving pulley 12 is applied with a force in a direction away from the fixed pulley, thereby instantaneously increasing the tension of the welding wire W wound around the spool SP.

  When the welding wire W is wound around the spool SP, the spool rotation speed tends to decrease at the moment when the layer is further raised. That is, since the welding wire rewinding device 1 adjusts the rotation speed of the spool SP so that the wire speed is constant, the spool rotation speed is reduced at a position where the welding wire W is further raised. Therefore, at the moment when the spool SP decelerates, the cylinder mechanism 25 in the dancer roller machine 10 is switched to a high pressure in order to wind the welding wire W without stagnation and without loosening. Is forcibly pressed down to suppress the deflection of the welding wire W.

  Subsequently, as shown in FIGS. 4B and 4C, when the welding wire W is slid laterally by the traverser 40 to the position W2 to W3, the cylinder mechanism 25 is moved from the high pressure to the reference pressure. The operation to switch to is performed. In this case, the movement position in the sliding direction is input from the traverser 40 to the wire detection position input means 27a, and sent from the wire detection position input means 27a to the wire detection position determination means 27c.

  Then, the wire detection position determination means 27c compares the switching position (second switching position) of the storage means 27b with the moving position, and if the moving position exceeds the switching position (second switching position), the cylinder mechanism The timing for switching the pressure of 25 to the reference pressure is determined, and a signal for switching the pressure of the cylinder mechanism 25 from the high pressure to the reference pressure is output from the cylinder control signal output means 27d. Therefore, the tension member 23 pressed by the cylinder mechanism 25 returns to the state where it is pushed by the reference pressure at the position W3 from the position W2. In the welding wire rewinding device 1, similarly, as shown in FIG. 4, the movement position and the switching position (the third switching position and the fourth switching position) are compared and determined on the left side of the spool SP. The same pressure adjustment is performed.

As described above, as shown in FIGS. 4A to 4D, the welding wire rewinding device 1 controls the cylinder mechanism 25 by the cylinder control mechanism 27 of the control mechanism 26, so that both ends of the spool SP. The cause of the loosening of the welding wire W is suppressed at the position where the winding layer changes, and the rewinding operation can be performed by winding the welding wire W around the spool SP with equal tension.
In addition, even if the pressure which presses the tension | tensile_strength material 23 with such a cylinder mechanism 25 is changed instantaneously, there is almost no fluctuation | variation of the position of the moving pulley 12. FIG.

  By the way, in the welding wire rewinding device 1, if an attempt is made to improve by changing the speed of the welding wire W, the welding wire W of the dancer roller machine 10 will be shaken as the speed changes. Therefore, in the welding wire rewinding device 1, the tension applied to the welding wire W at both ends of the spool SP is controlled so as to adjust the pressure applied to the welding wire by the cylinder mechanism 25 when the winding layer is changed. Without changing the speed, the welding wire W can be restrained from swinging and the welding wire W can be wound around the spool SP with equal tension.

  If the control mechanism 26 includes the rotational speed control mechanism 26A, the welding wire rewinding device 1 basically holds the welding wire W around the spool SP from the bobbin BW while keeping the tension of the welding wire W constant. However, by providing the control mechanism 26 with the cylinder control mechanism 27, the tension of the welding wire can be more reliably maintained and wound around the spool SP. Therefore, the welding wire W can perform a welding operation that ensures straightness.

In the welding wire rewinding apparatus 1, the rotational speed of the rotational speed control mechanism 26A is controlled to be decelerated or accelerated by a linear output signal corresponding to the displacement of the detection position of the moving pulley detected by the sensor 19. Although explained, it may be as follows.
That is, the rotation speed control mechanism 26A determines whether or not the determination unit 26c sets the reference pressure or a pressure higher than the reference pressure. That is, the determination unit 26c determines whether the detection position input to the input unit 26a exceeds the set position (threshold value) range stored in the storage unit 26b, and determines whether the detection pressure is set to the reference pressure or not. A signal indicating whether the pressure is applied is output.

When the determination unit 26c determines that the detection position has exceeded the set position, the output unit 26d outputs a signal for decelerating the speed of the feeding rotation driving unit 4 to a preset slow speed from the set reference speed. Output to the rotation drive unit 4. In addition, when the determination unit 26c determines that the detection position does not exceed the set position, that is, within the threshold range, the output unit 26d outputs a signal indicating the reference speed to the feeding rotation drive unit 4.
As described above, the rotational speed control mechanism 26A determines whether or not the drive control of the feed rotation drive unit 4 is within the threshold range, and the feed speed is set so that the reference speed and the deceleration speed slower than the reference speed are set. By controlling the rotation drive unit 4, the tension of the welding wire W by the fixed pulley 11 and the moving pulley 12 can always be kept constant.

Note that the clamping force of the welding wire W by the wire catcher 9 when the welding wire rewinding operation is completed or when the welding wire rewinding operation is stopped when the welding wire is cut eliminates the undulation phenomenon of the traveling welding wire W. It may be more than the clamping force which permits sliding running in the case.
Moreover, in the welding wire rewinding apparatus 1, although the aspect which rewinds the flux-cored welding wire W was demonstrated, it is applicable also to the aspect which winds up other welding wires, such as a solid welding wire.

  Further, the wire detection position determination means 27c may be a signal of the moving speed of the welding wire W distributed by the traverser 40 described later if the received signal is a signal that can indicate the position of the welding wire W. When determining the signal indicating the moving speed of the welding wire W, the wire detection position determining means 27c stores in advance data indicating the moving speed in the memory, and the stored data and the input moving speed. It is comprised so that it may determine by comparing with this signal.

DESCRIPTION OF SYMBOLS 1 Welding wire rewinding apparatus 2 Wire feeding machine 3 Installation stand 4 Feeding rotation drive part 9 Wire catcher 10 Dancer roller machine 11 Fixed pulley 11a Pulley 11b Support shaft 12 Moving pulley 12a Pulley 12b Support shaft 13 Housing frame 13a Frame column 13b Upper frame 13c Lower frame 14 Support mechanism 15 Moving guide rail 16 Moving wheel 17 Support frame 17a Support arm 17b Body frame 19 Sensor 20 Pushing mechanism 21 Upper wheel 21a Wheel shaft 22 Lower wheel 22a First lower wheel 22b Second lower wheel 23 tension member 23a mounting member 24 balance weight 24a locking portion 25 cylinder mechanism 25a rod 25b cylinder 26 control mechanism 26A rotational speed control mechanism 26a input means 26b storage means 6c determination means 26d output means 27 cylinder control mechanism 27a wire detection position input means 27b storage means 27c wire detection position determination means 27d cylinder control signal output means 28 display means 29 display monitor 30 wire speed detection mechanism 31 pulley with winding 40 traverser 41 guide Roller 42 Reciprocating part 43 Slide mechanism 44 Guide roller 50 Wire winder 55 Spool setting table 56 Winding rotation drive part BW Bobbin SP Spool W Welding wire

Claims (11)

A wire feeding machine that rotatably installs a bobbin around which a welding wire is wound and feeds the welding wire by driving a feeding rotation drive unit, and a dancer roller machine that keeps the tension of the welding wire fed from the bobbin of the wire feeding machine constant. And a wire winding machine that rotatably installs a spool for winding the welding wire via the dancer roller machine and rotates the winding wire in the winding direction by a winding rotation drive unit. ,
The dancer roller machine
A fixed pulley and a moving pulley each consisting of a plurality of pulleys that are spaced apart from each other so as to wind the welding wire fed out from the bobbin;
A support mechanism for rotatably supporting the plurality of moving pulleys and for supporting the fixed pulleys so as to be close to and away from each other;
A sensor for detecting the position of the moving pulley;
A pushing mechanism for adjusting a distance between the moving roller and the fixed roller;
A wire speed detection mechanism for detecting a speed by winding a welding wire that has passed between the fixed pulley composed of the plurality of pulleys and the moving pulley composed of the plurality of pulleys around the winding pulley;
The pushing mechanism is
An upper wheel and a lower wheel that are spaced apart along the direction of the welding wire wound around the fixed pulley and the movable pulley;
A tension member that is spanned between the upper wheel and the lower wheel and engages a moving pulley that is supported by the support mechanism on one side between the upper wheel and the lower wheel;
A balance weight held on the other side of the stretch member spanned between the upper wheel and the lower wheel so as to keep a balance of weight with respect to the moving pulley;
A cylinder mechanism that pushes and adjusts the tension member so that the position of the moving pulley is a preset position;
Control for decelerating the feeding rotation drive unit from the current speed when it is determined that the detection position of the moving pulley by the sensor is a position approaching the fixed pulley side from the set position compared to the set position And when it is determined that the detection position of the moving pulley by the sensor is a position away from the set position with respect to the fixed pulley side compared to the set position, the feeding rotation drive unit is moved to the current speed. And a control mechanism that performs control so as to accelerate the welding wire.   The support mechanism has a movable guide rail arranged on the left and right sides of the movable pulley, a movable wheel that moves along the movable guide rail, and supports the movable wheel while rotatably supporting the movable pulley. The welding wire rewinding device according to claim 1, further comprising a support frame.   The said pushing mechanism was comprised by the 1st lower side wheel and 2nd lower side wheel which were arranged in parallel in the position where the said lower wheel spaced apart from the said upper side wheel with the predetermined space | interval. Welding wire rewinding device.   4. The wire speed detection mechanism according to claim 1, wherein the wire contact surface of the winding pulley includes a winding width surface wider than twice the diameter of the welding wire. Item welding wire rewinding device.   The wire speed detection mechanism arranges the installation position of the winding pulley in accordance with the height of the installation position of the spool, and installs a sensor for measuring the speed of the welding wire on the rotating shaft of the winding pulley. The welding wire rewinding device according to claim 1, wherein:   The winding drum diameter of the winding pulley around which the welding wire is wound, the winding drum diameter of the fixed pulley, and the winding drum diameter of the movable pulley are formed to be equal to or larger than the winding drum diameter of the spool. The welding wire rewinding device according to any one of claims 1 to 5.   The welding wire is wound in the abdomen direction to the fixed pulley, the moving pulley, the winding pulley, and the spool when the direction of the welding wire unwound from the bobbin is an abdomen direction. The welding wire rewinding device according to any one of claims 1 to 6, wherein the winding direction is set so that the winding direction is as follows.   The welding wire rewinding device according to any one of claims 1 to 7, wherein the welding wire is a flux wire. A bobbin around which a welding wire is wound is rotatably installed, and a wire feeding machine that feeds the welding wire by driving a feeding rotation driving unit, and a welding wire fed from the bobbin of the wire feeding machine is wound between a fixed pulley and a moving pulley. A dancer roller machine that keeps the tension constant by rotating, and a wire winder that rotatably rotates a spool for winding the welding wire via the dancer roller machine and that is rotated in the winding direction by a winding rotation drive unit In a welding wire rewinding device comprising:
A sensor that detects a position of the moving pulley in a direction in which the moving pulley is close to the fixed pulley from a preset setting position, or a moving direction in which the moving pulley is away from the fixed pulley; and
When the position of the moving pulley detected by the sensor is determined to be closer to the fixed pulley side from the set position compared to the set position, control is performed to decelerate the feeding rotation drive unit from the current speed. And when it is determined that the position of the moving pulley detected by the sensor has moved away from the set position relative to the fixed pulley side compared to the set position, the feeding rotation drive unit is accelerated from the current speed. And a control mechanism that controls the welding wire rewinding device. A bobbin around which a welding wire is wound is rotatably installed, and a wire feeding machine that feeds the welding wire by driving a feeding rotation driving unit, and a welding wire fed from the bobbin of the wire feeding machine is wound between a fixed pulley and a moving pulley. A dancer roller machine that keeps the tension constant by rotating, and a wire winder that rotatably rotates a spool for winding the welding wire via the dancer roller machine and that is rotated in the winding direction by a winding rotation drive unit In a welding wire rewinding device comprising:
A sensor that detects a position of the moving pulley in a direction in which the moving pulley is close to the fixed pulley from a preset setting position, or a moving direction in which the moving pulley is away from the fixed pulley; and
A control mechanism for controlling the feeding rotation drive unit according to the position of the moving pulley detected by the sensor,
The control mechanism includes input means for inputting a detection position of the moving pulley detected by the sensor;
Storage means for storing the set position;
A determination unit that determines whether or not the detection position input to the input unit exceeds the set position stored in the storage unit;
When the determination means determines that the detection position has exceeded the fixed pulley side, a signal for decelerating the speed of the extended rotation drive unit to a speed slower than a set reference speed is provided. And an output means for outputting a signal indicating the reference speed to the feeding rotation drive section when the determination means determines that the detection position does not exceed the detection position. A welding wire rewinding device. A fixed pulley in which a bobbin around which a welding wire is wound is rotatably installed and the welding wire is fed out by driving of a feeding rotation drive unit, and the welding wire fed out from the bobbin of the wire feeding machine is opposed and spaced from each other And a dancer roller machine that winds between moving pulleys and feeds it with a constant tension, and a spool that winds a welding wire fed through the dancer roller machine, and is detachably installed and wound by a take-up rotation drive unit. In a welding wire rewinding method of rewinding a welding wire from the bobbin to the spool by a welding wire rewinding device comprising a wire winder that rotates in a winding direction,
The welding wire is fed to the dancer roller machine by the wire feeding machine, and the tension of the welding wire is adjusted by the dancer roller machine while performing the adjustment process for adjusting the tension of the welding wire in the dancer roller machine. Perform the winding process on the spool,
The adjusting step detects the position of the moving pulley with a sensor, and when the moving pulley is out of a preset threshold range, the control mechanism reduces the reference speed of the feeding rotation drive unit;
And a step of setting the feeding rotation driving unit to a reference speed when the position of the moving pulley detected by the sensor falls within the threshold range.

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