JP5111189B2 - Constant speed rewinding auxiliary device for iron core material - Google Patents

Description

  The present invention relates to a constant speed unwinding auxiliary device for iron core material for rewinding and supplying an iron core material formed by laminating a plurality of amorphous sheet materials at a substantially constant speed from a state of being wound in a circular shape.

  In recent years, amorphous sheet materials have been gradually used instead of directional silicon steel sheets for wound cores such as transformers for power distribution. Therefore, since it can be produced only with a thickness of about several tens of microns, there is a problem that it is very fragile and difficult to handle. For this reason, the amorphous sheet material is generally used as a core material constituting a wound core in a state where a plurality of the amorphous sheet materials are overlapped.

  In manufacturing a wound iron core using the amorphous sheet material, for example, as described in paragraph 0037 and FIG. 8 of Patent Document 1, first, an amorphous sheet material is laminated in a multilayer and wound. The iron core material wound around the take-up drum is fed to the next process at a constant speed and in a looped state by an electrically driven rewinding roller. Subsequently, the fed iron core material is fed into a cutting device by a predetermined length by a feeding roller that is electrically driven in the next process and cut. A one-turn cut type wound core is manufactured by sequentially winding the core material cut into a predetermined length into a circular or rectangular shape.

JP-A-8-45764

  However, in the technique described in Patent Document 1, the rewinding roller is activated when the detection means no longer detects the tip of the loop formed by the iron core material that has been unwound from the winding drum. It is comprised so that it may rewind from a winding drum (refer paragraph 0039 of patent document 1). For this reason, when feeding of the core material to the cutting device by the feeding roller is started and the tip of the loop formed of the core material is no longer detected by the detecting means, the rewinding roller is activated and the core material is removed. When the leading end of the loop is detected by the detecting means along with the rewinding from the winding drum and the feeding of the core material to the cutting device by the feeding roller being stopped, the rewinding roller Stop rewinding from the take-up drum. That is, the rewinding roller repeats driving and stopping in accordance with the feeding of the iron core material by the feeding roller and the stopping of the feeding, thereby rewinding the iron core material and stopping the rewinding.

  However, since the iron core material is wound around the winding drum with some slackness, the followability is poor, and there is a difference in rotational speed between the inner peripheral side and the outer peripheral side of the iron core material. In the case where the rewinding roller is repeatedly driven and stopped, the loosening is partially increased by the inertial force and the iron core material is in a meandering state, and the meandering portion is located on the outer peripheral side of the iron core material. There has been a problem that the iron core material is crushed by its own weight and causes damage such as cracks in the iron core material.

  In view of the above-mentioned problems, the present invention provides a core material formed by stacking a plurality of amorphous sheet materials in a rewind state from a state of being wound in a circular shape, and even when the supply of the core material is stopped. An object of the present invention is to provide a constant speed unwinding auxiliary device for iron core material that can continue unwinding at a substantially constant speed without stopping the unwinding.

In order to solve the above problems, the invention according to claim 1 is characterized in that a plurality of amorphous sheet materials are overlapped.
The hoop material formed by winding the resulting iron core material in a circular shape is electrically rotated by a command from the control device.
The uncoiler to be driven and the iron core material unwound from the hoop material are cut according to a command from the control device.
A pair of engaging rollers rotatably mounted at a predetermined physical interval between the delivery device and the delivery device for delivery to the device;
A roller member disposed so as to be movable up and down by winding an iron core material between the pair of engaging rollers;
A first detecting means for detecting an upper limit position of the roller member; and a first detecting means for detecting a lower limit position of the roller member.
When the mounting frame having the detecting means of 2 is arranged and the roller member exceeds the upper limit position, the control device
When the uncoiler speed increasing command is issued from the position and the roller member exceeds the lower limit position, the control
The uncoiler stop command is issued from the control device.

In the invention according to claim 2, the core material formed by superimposing a plurality of amorphous sheet materials is circular.
An uncoiler that rotates and drives the hoop material formed by winding it electrically according to a command from the control device,
With the feeding device that sends the iron core material unwound from the hoop material to the cutting device in response to a command from the control device.
A pair of anchoring rollers rotatably mounted at a predetermined physical interval between the pair of anchoring rollers.
A roller member that can be moved up and down by winding an iron core material, and detecting the upper limit position of the roller member
First detecting means, second detecting means for detecting a lower limit position of the roller member, and the first and second
The third and fourth detections for detecting the range in which the uncoiler rotates at a constant speed between the detection means
An attachment frame body having a means is arranged, and the control member is moved as the roller member moves upward from the third detection means.
The control device issues a command to increase the speed of the uncoiler, and the roller member moves downward from the fourth detecting means.
The decoiler's deceleration command is issued from the control device according to
And

  According to the first aspect of the present invention, when the iron core material is sent out, the roller member wound so that the iron core material forms a V-shape between the pair of engaging rollers resists its own weight. While raising the distance corresponding to the difference between the amount of iron core material delivered by the apparatus and the amount of iron core material unwound from the hoop material by the uncoiler, the hoop material is caused by its own weight when the iron core material is stopped. Since the roller member is moved up and down as the core material is lowered by the distance corresponding to the amount of the iron core material to be rewound, that is, as the core material is fed and stopped by the feeding device, the feeding of the core material is performed. Even when stopped, the uncoiler can continue to drive (rotate) at a substantially constant speed without stopping. As a result, since the uncoiler does not repeat driving and stopping in accordance with the feeding and stopping of the iron core material, meandering (waving) portions of the iron core material are generated in the middle of the hoop material around which the iron core material is wound. While being able to prevent well, the meandering part is crushed by the weight of the iron core material itself located on the outer peripheral side from this, and it is possible to satisfactorily prevent damage such as cracks from occurring in the iron core material. it can.

  According to a second aspect of the present invention, the core material is maintained while continuing to drive (rotate) the uncoiler by accelerating or decelerating the rotational speed of the uncoiler according to the position of the roller member detected by the detecting means. Can be rewound from the hoop material without excess or deficiency. Further, since the uncoiler can accelerate or decelerate the rotational speed step by step in accordance with the position of the roller member detected by the detecting means, the uncoiler suddenly accelerates (accelerates) during the rewinding of the iron core material. It is possible to prevent sudden start-up or sudden deceleration (rapid stop), and as a result, it is good that a meandering (waving) portion of the iron core material is generated in the middle of the hoop material around which the iron core material is wound. In addition, the meandering portion is crushed by the weight of the iron core material itself located on the outer peripheral side from this, so that it is possible to satisfactorily prevent the iron core material from being damaged such as cracking. .

  Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS. In FIG. 1, 1 is a hoop formed by winding a core material 1a formed by laminating a plurality of (for example, 5) amorphous sheet materials in a circular shape, and 2 includes a cored bar 2a that is driven to rotate by an electric motor (not shown). The hoop material 1 is attached to the cored bar 2a and rotated in a predetermined direction (clockwise in FIG. 1) to sequentially rewind the core material 1a from the hoop material 1. 3 is a feeding device that feeds the core material 1a unwound from the hoop material 1 to a cutting device 4 to be described later by a preset length dimension, and 4 is sent by the sending device 3 by a preset length dimension. This is a cutting device for cutting the iron core material 1a. The uncoiler 2, the delivery device 3 and the cutting device 4 are driven and controlled by commands from a control device (not shown).

  5, when unwinding the iron core material 1 a from the hoop material 1, the uncoiler 2 to which the hoop material 1 is attached is prevented from repeating driving and stopping as much as possible, and is driven at a substantially constant speed (a slight acceleration / deceleration). The constant-speed rewinding auxiliary device 5 is provided between the uncoiler 2 and the delivery device 3 as shown in FIG. Hereinafter, the configuration of the constant speed rewinding auxiliary device 5 will be described with reference to FIGS. 1 to 3. In FIG. 1, 6 is a mounting frame formed by combining steel materials such as angle steel. 7 is a guide roller that is rotatably attached to the upper right side of the mounting frame 6 and guides the iron core material 1a unwound from the hoop material 1 to the engaging roller 8a described later, and 8a and 8b are the mounting frames. It is a pair of left and right engaging rollers that are rotatably attached to the center of the body 6 at a predetermined interval. 9 is a guide rail disposed along the vertical direction (height direction) of the mounting frame 6 between the pair of engaging rollers 8a and 8b, and 10 is a roller that moves up and down along the guide rail 9. As shown in FIG. 2, the roller member 10 is rotatably attached to a mounting plate 9 b fixed so as to straddle the moving bodies 9 a and 9 a provided on the guide rail 9.

  11a is a first detection means that is disposed on the mounting frame 6 at a position below the pair of engaging rollers 8a and 8b and detects the upper limit position of the roller member 10, and 11b is a predetermined height from the lower end of the mounting frame 6. This is a second detection means that is disposed at the vertical position and detects the lower limit position of the roller member 10. The first and second detection means 11a and 11b are composed of, for example, photoelectric transmission sensors, and are fixed to the mounting frame 6 with the roller member 10 interposed therebetween as shown in FIG. The light projecting part and the light receiving part are opposed to the tip part of the flat L-shaped mounting seat 12 in which the part extends to the vicinity of the center part in the length direction of the roller member 10 (vertical direction in FIG. 3). It is installed in the state. In addition, the space | interval between the said 1st, 2nd detection means 11a, 11b is set so that it may become larger than the length dimension of the iron core material 1a wound by the outermost periphery of a wound iron core. The detection signals output from the first and second detection means 11a and 11b are input to a control device (not shown), and drive control of the uncoiler 2 is performed according to the input signals.

  Next, the operation of the present invention will be described with reference to FIG. 1 and FIGS. FIG. 1 shows a state (initial state) before starting the feeding of the iron core material 1a, and the iron core material 1a unwound from the hoop material 1 is located on the upper side of the guide roller 7 of the constant speed rewinding auxiliary device 5 → In the order of the upper side of one engaging roller 8a → the lower side of the roller member 10 → the upper side of the other engaging roller 8b, it is led out toward the feeding device 3 in a state where it is wound without slack so as to form a V-shape. ing. At this time, as shown in FIG. 1, the roller member 10 descends to the lower side of the mounting frame body 6 along the guide rail 9 due to its own weight, and comes into contact with a stopper 6 a provided at the lower portion of the mounting frame body 6. ing. Further, the iron core material 1a wound so as to form a V-shape between the roller member 10 and the pair of engaging rollers 8a and 8b is detected by the second detecting means 11b (that is, the roller member). 10 has reached the lower limit position), the uncoiler 2 is stopped by a command from a control device (not shown).

  In the above state, when the feeding device 3 is activated by a command from a control device (not shown) and the feeding of the iron core material 1a to the cutting device 4 side is started, the iron core material 1a is connected to the pair of engaging rollers 8a and 8b. Since the uncoiler 2 is stopped, the roller member 10 wound so as to form a V-shape between the hoop material 1 and the iron core material 1a is not rewound, so that the amount of the iron core material 1a sent out is reduced. It starts to rise along the guide rail 9 against its own weight by a corresponding distance. Then, the iron core material 1a wound so as to form a V shape between the roller member 10 and the pair of engaging rollers 8a and 8b is detected by the second detecting means 11b as shown in FIG. If it raises to the position which is not performed, the uncoiler 2 will be started by the command from the control apparatus which is not illustrated.

  The uncoiler 2 takes some time from starting to reach a predetermined speed (normal rewinding speed of the iron core material 1a), and the feeding speed of the iron core material 1a is the same as that of the normal iron core material 1a. Since it is set so as to be faster than the return speed, the roller member 10 moves along the guide rail 9 to above the mounting frame 6 as shown in FIG. However, compared with the length dimension of the iron core material 1a wound so as to form a V-shape between the engaging rollers 8a and 8b and the roller member 10, the feeding device 3 at the beginning of the feeding of the iron core material 1a. Since the length of the iron core material 1a to be delivered is short, the roller member 10 reaches a position exceeding the upper limit position along the guide rail 9 as shown in FIG. 6 (that is, a position where the roller member 10 is not detected by the first detection means 11a). It will not rise.

  Subsequently, when the core material 1a is delivered by the delivery device 3 by a preset length, the delivery device 3 stops the delivery of the core material 1a according to a command from a control device (not shown). On the other hand, since the uncoiler 2 continues to unwind the iron core material 1a from the hoop material 1 without stopping rotation (driving), a predetermined amount (unwinding speed of the iron core material 1a) even during stoppage of the feeding of the iron core material 1a. Of the iron core material 1a) is rewound from the hoop material 1. Accordingly, the roller member 10 of the constant-speed rewinding auxiliary device 5 in which the iron core material 1a is wound so as to form a V shape between the pair of engaging rollers 8a and 8b is, for example, illustrated in FIG. As shown in FIG. 4 from the position indicated by 5, a distance corresponding to the amount of the iron core material 1 a rewound from the hoop material 1 by its own weight is provided below the mounting frame 6 along the guide rail 9 (first It moves gradually (to a position not detected by the detection means 11b). As a result, since the load corresponding to the weight of the roller member 10 is applied to the iron core material 1a rewound from the hoop material 1, it is possible to satisfactorily prevent the iron core material 1a from being slackened.

  Next, when the cutting of the iron core material 1a by the cutting device 4 is completed, the sending device 3 is activated by a command from a control device (not shown), and the sending of the iron core material 1a is resumed. Accordingly, as shown in FIG. 4, the roller member 10 that has been lowered along the guide rail 9 to a position that is not detected by the second detection means 11 b has the amount of the iron core material 1 a sent out by the sending device 3. The uncoiler 2 moves upward along the guide rail 9 against its own weight by a distance corresponding to the difference from the amount of the iron core material 1 a that is unwound from the hoop material 1. This is because the feeding speed of the iron core material 1a is set to be faster than the rewinding speed. Then, when the iron core material 1a is sent by the sending device 3 in a predetermined length dimension, the sending device 3 is stopped by a command from a control device (not shown). Thereafter, the above operation is repeated until the feeding of the core material 1a forming one wound core is completed. That is, the roller member 10 repeats the up-and-down movement between the first and second detection means 11a and 11b as the iron core material 1a is sent and stopped by the sending device 3, thereby moving the uncoiler 2 at a constant speed. Can be rotated.

  When the roller member 10 is raised to a position exceeding the upper limit position along the guide rail 9 as shown in FIG. 6 during the feeding of the iron core material 1a (that is, the pair of engaging rollers 8a and 8b and the roller member 10 When the iron core material 1a wound so as to form a V-shape rises to a position where it is not detected by the first detecting means 11a), the rewinding amount is smaller than the sending amount of the iron core material 1a. Therefore, the uncoiler 2 is controlled to increase (accelerate) the rotation speed according to a command from a control device (not shown) in order to increase the rewinding amount of the iron core material 1a. When the roller member 10 is lowered to the lower limit position along the guide rail 9 as shown in FIG. 1 while the iron core material 1a is being fed or stopped (ie, a pair of the engaging rollers 8a and 8b and the roller). When the iron core material 1a wound so as to form a V shape with the member 10 is lowered to a position detected by the second detection means 11b), the rewinding amount is larger than the feeding amount of the iron core material 1a. Therefore, the uncoiler 2 is controlled to stop the rotation (drive) by a command from a control device (not shown) in order to stop the rewinding of the iron core material 1a.

  Thus, in the present invention, the roller member 10 of the constant speed rewinding auxiliary device 5 is unwound from the hoop material 1 by the amount of the iron core material 1a fed by the feeding device 3 and the uncoiler 2 when the iron core material 1a is fed. The roller member 10 is lifted along the guide rail 9 by a distance corresponding to the difference from the amount of the iron core material 1a and the roller member 10 is set in accordance with the amount of the unwinded iron core material 1a. By lowering the distance along the guide rail 9 by the distance, the uncoiler 2 can continue to rotate at a substantially constant speed not only when the iron core material 1a is delivered but also when the delivery is stopped. As a result, since the uncoiler 2 does not repeat driving and stopping in accordance with the feeding and stopping of the iron core material 1a, meandering (waving) of the iron core material 1a in the middle of the hoop material 1 around which the iron core material 1a is wound. It is possible to satisfactorily prevent the occurrence of the portion, and the meandering portion is crushed by the weight of the core material 1a itself located on the outer peripheral side, thereby causing damage such as cracking in the core material 1a. Can be prevented well.

  Next, a second embodiment of the present invention will be described with reference to FIGS. The difference between the second embodiment and the first embodiment is that the first detection means 11a for detecting the upper limit position of the roller member 10 of the constant speed rewinding auxiliary device 5 and the lower limit position of the roller member 10 are as follows. The detection means for detecting the roller member 10 is arranged at the intermediate position in the height direction of the mounting frame 6 between the second detection means 11b to be detected. In FIG. For example, two (third and fourth) detection means 11c and 11d are arranged between the first and second detection means 11a and 11b. The third and fourth detection means 11c and 11d are composed of, for example, a photoelectric transmission type sensor in the same manner as the first and second detection means 11a and 11b, and the height direction of the mounting frame 6 (FIG. 7). (Vertical direction) between the first and second detection means 11a and 11b, for example, at equal intervals.

  Next, the operation of the second embodiment will be described with reference to FIGS. Since the basic operation is the same as that of the first embodiment, detailed description is omitted. When the feeding of the iron core material 1a is stopped in order to cut the iron core material 1a fed by the length set in advance by the feeding device 3, the roller member 10 of the constant speed rewinding auxiliary device 5 It moves below the mounting frame 6 along the guide rail 9 by its own weight by a distance corresponding to the amount of the iron core material 1a unwound from the material 1. The roller member 10 is moved, for example, from the position shown in FIG. 7 (between the first and second detection means 11a and 11c) to the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d). To the position where the iron core material 1a wound so as to form a V-shape between the pair of engaging rollers 8a and 8b and the roller member 10 is detected by the third detecting means 11c. When the control unit (not shown) determines that the roller member 10 is descending along the guide rail 9, the roller member 10 is further moved to the position shown in FIG. 8 (third and fourth detection means 11c). , 11d) to the position shown in FIG. 9 (between the second and fourth detection means 11b, 11d) (that is, a V-shape is formed between the pair of engaging rollers 8a, 8b and the roller member 10). Wound to form When the core material 1a is lowered to the position detected by the fourth detection means 11d), the uncoiler 2 is controlled to slightly lower (decelerate) the rotational speed than the current state in accordance with a command from a control device (not shown). The

  On the other hand, the roller member 10 is lowered from the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d) to the position shown in FIG. 9 (between the second and fourth detection means 11b and 11d). If not (that is, the iron core material 1a wound so as to form a V-shape between the pair of engaging rollers 8a and 8b and the roller member 10 is lowered to a position detected by the fourth detection means 11d. If not, the uncoiler 2 maintains the current rotational speed.

  Next, when the feeding of the iron core material 1 a is resumed, the roller member 10 of the constant speed rewinding auxiliary device 5 is rewound from the hoop material 1 by the amount of the iron core material 1 a fed by the feeding device 3 and the uncoiler 2. It moves above the mounting frame 6 along the guide rail 9 against its own weight by a distance corresponding to the difference from the amount of the iron core material 1a. The roller member 10 is moved, for example, from the position shown in FIG. 9 (between the second and fourth detection means 11b and 11d) to the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d). To the position where the iron core material 1a wound so as to form a V shape between the pair of engaging rollers 8a and 8b and the roller member 10 is not detected by the fourth detection means 11d. When the control unit (not shown) determines that the roller member 10 is rising along the guide rail 9, the roller member 10 is further moved to the position shown in FIG. 8 (third and fourth detection means 11c). , 11d) to the position shown in FIG. 7 (between the first and third detection means 11a, 11c) (that is, a V-shape is formed between the pair of engaging rollers 8a, 8b and the roller member 10). Wrap to form The uncoiler 2 is controlled so as to slightly increase (accelerate) the rotational speed from the current state according to a command from a control device (not shown) when the iron core material 1a rises to a position where it is no longer detected by the third detection means 11c). (That is, control is performed so that the rotational speed of the uncoiler 2 decelerated in paragraph 0023 is restored).

  On the other hand, the roller member 10 is raised from the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d) to the position shown in FIG. 7 (between the first and third detection means 11a and 11c). If not (that is, the iron core material 1a wound so as to form a V-shape between the pair of engaging rollers 8a and 8b and the roller member 10 is raised to a position where it is not detected by the third detecting means 11c. If not, the uncoiler 2 maintains the current rotational speed.

  The roller member 10 is moved from the position shown in FIG. 7 (between the first and third detection means 11a and 11c) to the position shown in FIG. 4 (between the detection means 11c and 11d) or from the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d) to the position shown in FIG. 7 (first and third detection means 11a, 11d, 11c) (ie, when the roller member 10 is not lowered to the position shown in FIG. 9 (between the second and fourth detection means 11b and 11d)), the iron core material 1a Since the unwinding amount is smaller than the sending amount, the uncoiler 2 is controlled to increase (accelerate) the rotational speed by a command from a control device (not shown) in order to increase the unwinding amount of the iron core material 1a. The As a result, the amount of rewinding of the iron core material 1a is corrected so as to be appropriate, so that the roller member 10 exceeds the upper limit position due to a shortage of the amount of rewinding of the iron core material 1a, and the uncoiler 2 is not illustrated. It is possible to prevent the rotation speed from being rapidly increased (rapidly accelerated) by a command from

  Further, the roller member 10 moves from the position shown in FIG. 9 (between the second and fourth detection means 11b and 11d) to the position shown in FIG. 4 (between the detection means 11c and 11d) or from the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d) to the position shown in FIG. 9 (second and fourth detection means 11b, 11d) (when the roller member 10 does not rise to the position shown in FIG. 7 (between the first and third detection means 11a and 11c)), the core material 1a Since the unwinding amount is larger than the sending amount, the uncoiler 2 is controlled so as to reduce (decelerate) the rotational speed by a command from a control device (not shown) in order to reduce the unwinding amount of the iron core material 1a. The As a result, the amount of rewinding of the iron core material 1a is corrected so as to be appropriate. Therefore, when the amount of rewinding of the iron core material 1a is too large, the roller member 10 exceeds the lower limit position, and the uncoiler 2 is not illustrated. It is possible to prevent the rotation speed from being rapidly reduced (sudden deceleration or sudden stop) according to the command from.

  That is, in the second embodiment, if the relationship between the feeding amount and the rewinding amount of the iron core material 1a is properly maintained, the roller member 10 is positioned at the position shown in FIG. , The third detecting means 11a, 11c), and the rotational speed of the uncoiler 2 is controlled to be slightly accelerated (accelerated by the amount decelerated when the roller member 10 is lowered), and the roller member is controlled. 10 is prevented from reaching the upper limit position, and when the feeding of the iron core material 1a is stopped, the roller member 10 is lowered to the position shown in FIG. 9 (between the second and fourth detection means 11b and 11d), and the uncoiler 2 By controlling the rotational speed to be slightly decelerated from the current state (decelerating the amount of acceleration when the roller member 10 is raised) so that the roller member 10 does not reach the lower limit position, The rotational speed of the Nkoira 2 is to maintain substantially constant. On the other hand, when the relationship between the feeding amount and the rewinding amount of the iron core material 1a is not appropriate, for example, when the rewinding amount is smaller than the feeding amount of the iron core material 1a, the roller member 10 delivers the iron core material 1a. Sometimes, every time the position rises from the position shown in FIG. 8 (between the third and fourth detection means 11c and 11d) to the position shown in FIG. 7 (between the first and third detection means 11a and 11c), the uncoiler 2 When the rotational speed is accelerated stepwise and the rewinding amount is larger than the feeding amount of the iron core material 1a, the roller member 10 is moved to the position shown in FIG. By decreasing the rotational speed of the uncoiler 2 step by step each time it is lowered from the fourth detection means 11c and 11d) to the position shown in FIG. 9 (between the second and fourth detection means 11b and 11d), The feeding amount and the rewinding amount of the iron core material 1a Relationship is intended to be corrected so as to be a proper state.

  As described above, in the second embodiment of the present invention, the roller member 10 of the constant speed rewinding auxiliary device 5 when the iron core material 1a is delivered is hooped by the amount of the iron core material 1a delivered by the delivery device 3 and the uncoiler 2. It rises along the guide rail 9 by a distance corresponding to the difference from the amount of the iron core material 1a unwound from the material 1, and forms a V-shape between the roller member 10 and the pair of engaging rollers 8a and 8b. When the iron core material 1a wound in such a manner is no longer detected by the third detection means 11c, the rotational speed of the uncoiler 2 is slightly accelerated from the current level, and when the iron core material 1a is stopped being fed, the roller The member 10 descends along the guide rail 9 by a distance corresponding to the amount of the iron core material 1a unwound from the hoop material 1 by the uncoiler 2, and the roller member 10 and a pair of engaging rollers When the iron core material 1a wound so as to form a V-shape between a and 8b is detected by the fourth detection means 11d, the rotational speed of the uncoiler 2 is slightly decelerated from the current level. As a result, the uncoiler 2 can be gradually accelerated and decelerated (stepwise). As a result, the uncoiler 2 can be accelerated when the roller member 10 exceeds the upper limit position as in the first embodiment. As compared with the case where the uncoiler 2 is decelerated (stopped) when the lower limit position is exceeded, the rotational speed of the uncoiler 2 can be controlled more smoothly (suppressing a sudden change in speed). Accordingly, the uncoiler 2 is not repeatedly driven and stopped in accordance with the repetition of the feeding and stopping of the iron core material 1a, and the uncoiler 2 is not accelerated or decelerated rapidly when the iron core material 1a is sent or stopped. The meandering (waving) portion of the iron core material 1a can be satisfactorily prevented from occurring in the middle of the hoop material 1 around which the iron core material 1a is wound, and the meandering portion is located on the outer peripheral side. By being crushed by the weight of the iron core material 1a itself, it is possible to satisfactorily prevent the iron core material 1a from being damaged such as cracks.

  In the present invention, the case where a photoelectric transmission sensor is used as the first to fourth detection means 11a to 11d for detecting the position of the roller member 10 has been described as an example. The position of the roller member 10 may be detected using other detection means (for example, a linear scale or a distance sensor). In the second embodiment of the present invention, the case where two (third and fourth) detection means 11c and 11d are arranged between the first and second detection means 11a and 11b has been described as an example. However, two or more detection means may be arranged between the first and second detection means 11a and 11b. Furthermore, in the second embodiment of the present invention, the case where the third and fourth detection means 11c and 11d are arranged at equal intervals between the first and second detection means 11a and 11b has been described as an example. The third and fourth detection means 11c and 11d may be arranged at unequal intervals.

It is a schematic block diagram which shows a part of wound iron core manufacturing equipment provided with this invention apparatus. It is a perspective view which shows the principal part of this invention apparatus. It is a cross-sectional top view which shows the principal part of this invention apparatus. It is operation | movement explanatory drawing which shows the state in which the roller member is located in the 2nd detection means vicinity. It is operation | movement explanatory drawing which shows the state in which the roller member is located in the 1st detection means vicinity. It is operation | movement explanatory drawing which shows the state in which the roller member is located above the 1st detection means. It is operation | movement explanatory drawing which shows the state in which the roller member is located between the 1st detection means and the 3rd detection means in 2nd Example. It is operation | movement explanatory drawing which shows the state in which the roller member is located between the 3rd detection means and the 4th detection means in 2nd Example. It is operation | movement explanatory drawing which shows the state in which the roller member is located between the 2nd detection means and the 4th detection means in 2nd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoop material 1a Iron core material 2 Uncoiler 3 Sending device 4 Cutting device 5 Constant-speed rewinding auxiliary device 6 Mounting frame 7 Guide roller 8a, 8b Engagement roller 9 Guide rail 10 Roller member 11a-11d 1st-4th detection means

Claims (2)

A hood formed by winding a core material made of a stack of amorphous sheet materials into a circular shape.
An uncoiler that rotates the hoop material electrically by command from the control device, and the hoop material was unwound.
A predetermined physical distance between the iron core material and the delivery device that delivers the core material to the cutting device in response to a command from the control device
A pair of anchoring rollers rotatably attached to each other, and an outer peripheral surface of the hoop material between the pair of anchoring rollers.
A roller member disposed so as to be movable up and down by winding an iron core material so that is on the lower side, and the roller member
First detecting means for detecting the upper limit position of the roller and second detecting means for detecting the lower limit position of the roller member
And when the roller member exceeds the upper limit position, the control device removes the arm from the controller.
When the controller speed-up command is issued and the roller member exceeds the lower limit position, the controller
A constant speed rewinding supplement for iron core material, characterized in that an uncoiler stop command is issued.
Auxiliary device. A hood formed by winding a core material made of a stack of amorphous sheet materials into a circular shape.
An uncoiler that rotates the hoop material electrically by command from the control device, and the hoop material was unwound.
A predetermined physical distance between the iron core material and the delivery device that delivers the core material to the cutting device in response to a command from the control device
A pair of anchoring rollers rotatably attached to each other, and an outer peripheral surface of the hoop material between the pair of anchoring rollers.
A roller member disposed so as to be movable up and down by winding an iron core material so that the
First detection means for detecting an upper limit position, and second detection means for detecting a lower limit position of the roller member;
The first and second detecting means detect a range in which the uncoiler is driven to rotate at a constant speed.
3. A mounting frame provided with a fourth detection means is arranged, and the roller member moves higher than the third detection means.
In accordance with the control unit, a command to increase the speed of the uncoiler is issued, and the roller member detects a fourth detection
The decoiler's deceleration command is issued from the control device as it moves down from the means.
A constant-speed unwinding auxiliary device for iron core material, characterized by

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