JP6594753B2 - Peeling jig and peeling device - Google Patents

Description

  The present invention relates to a magnetic material workpiece such as a laminated steel sheet peeling jig and a peeling apparatus using the same.

  After separating steel sheets one by one with a peeling jig from a stack of multiple magnetic workpieces, for example, steel sheets, only the top layer using a lift magnet, holder, vacuum, etc. A peeling device is used to take out the water. The peeling jig induces a magnetic pole opposite to the magnetic pole generated in the peeling jig in the opposite laminate, so that the same magnetic pole is induced between the steel plates and the repulsive force acts between the steel plates to be laminated. An interval is generated. In this case, as a magnetization method provided in the peeling jig, there are a permanent magnet method, an electromagnet method, and a permanent electromagnetic method using these in combination.

  The present applicants use a permanent electromagnetic method to change the magnetic force separating the uppermost steel plate and the next steel plate and the magnitude of the magnetic force separating the lower layers to ensure separation. The peeling apparatus which moves a peeling jig away from a tool and a laminated body of a floating state was proposed (refer to patent documents 1).

JP 2009-84025 A

  In order to increase the separation capability of the above-described peeling jig, it is necessary to dispose the permanent magnets built in the yoke having a large magnetic force more closely and densely, and it is necessary to wind more coils around the electromagnets. However, increasing the magnetic attraction between the peeling jig and the laminated steel sheet in order to enhance the separation ability places a heavy burden on taking out only the uppermost steel sheet.

  For example, a permanent magnet built in the peeling jig needs to be separated from the laminated steel plates, and the peeling jig needs to be moved using a device such as a cylinder. Depending on the distance to be separated and the capacity of the cylinder, a large device (such as an air unit or a hydraulic unit) is required.

Further, while the laminated steel sheets are separated, it is necessary to continue to energize a plurality of electromagnet coils built in the peeling jig in the laminating direction of the steel sheets and the depth direction of the yoke, which requires large power consumption. In addition, since a large amount of power is required, the amount of heat generated by the coil is increased, the separation ability is lowered, and the separation operation may become unstable. Further, when the number of turns of the coil is increased, there is a restriction that the area of the magnetic pole acting surface that becomes the core cannot be increased.
Furthermore, when only one of the uppermost layers is attracted and held by the pickup from the state where the opposed laminated steel plates are magnetized, the magnetic attraction force by the magnetic circuit formed between the peeling jigs is too strong. There is a risk that it will take time to take out.

  The present invention has been made in order to solve these problems. The object of the present invention is to easily take out, reduce power consumption, and generate heat when taking out a separated magnetic work piece magnetized on the same magnetic pole. It is an object of the present invention to provide a peeling jig that suppresses the separation and maintains the separation performance and a peeling apparatus that can promote downsizing of the apparatus, simplification of the structure, and energy saving using the peeling jig.

In order to achieve the above object, the present invention comprises the following arrangement.
Each magnetic body work is arranged on the main body of the peeling device so as to face one side of a plurality of magnetic work pieces made of a magnetic material loaded on a loading table, and a magnetic circuit is always formed between the magnetic work pieces. the a peeling jig and separated state magnetized in the same magnetic pole, a pair of coils arranged in parallel, the yoke bottom core part in the center of the pair of coils are inserted connecting the core unit with each other, respectively An electromagnet having a magnetic yoke formed with a side yoke portion that stands up more forward and covers the outer periphery of each coil, and is disposed in contact with the front end surfaces of the pair of core portions of the electromagnet. comprising a pair of permanent magnets forming a magnetized magnetic flux acting surface on the magnetic pole, and a demagnetization mode weakening the magnetic flux acting on the magnetic workpiece from said permanent magnet is energized to the electromagnet, the permanent magnet The magnetic flux acting from A degaussing mode off, in which characterized in that it is switched each the intensity of the magnetic force generated in the magnetic flux acting surface.

According to the above configuration, the magnetic circuit is formed and the magnetic workpieces are magnetized on the same magnetic poles and separated from each other simply by arranging the laminated magnetic workpieces facing the pair of permanent magnets. In this state, by energizing the electromagnet to enter the demagnetization mode, the magnetic flux acting on the magnetic workpiece is weakened from the permanent magnet, and only one of the uppermost layers of the laminated magnetic workpieces can be easily taken out. The remaining magnetic work can be returned to the laminated state.
In addition, by adopting a degaussing mode in which the amount of current flowing to the electromagnet is increased, the work of taking out the laminated magnetic work can be reliably and quickly performed by canceling out the magnetic flux acting from the permanent magnet.
Therefore, only when the separated magnetic work is taken out, by energizing the electromagnet in the demagnetization mode or the demagnetization mode, only one of the uppermost layers can be easily taken out, reducing the power consumption and reducing the energization time. By shortening, heat generation can be suppressed and stable separation performance of the peeling jig can be maintained.

The pair of permanent magnets may be disposed adjacent to the front end surfaces of the pair of core portions at a plurality of locations in the height direction with the same magnetized magnetic pole.
As a result, a pair of permanent magnets magnetized on the same magnetic pole along the height direction of the laminated magnetic workpieces are arranged to be opposed to each other at a plurality of locations. The workpieces can be magnetized on the same magnetic pole and separated from each other.

  The demagnetization mode and the demagnetization mode are opposite to each other by energizing the electromagnet so that the magnetic flux generated in the electromagnet and the magnetic flux generated from the magnetic poles of the pair of permanent magnets overlap each other. You may further have the magnetization mode which acts on a body work. In this case, the separation performance can be improved by superimposing the magnetic flux generated in the electromagnet and the magnetic flux generated from the magnetic poles of the pair of permanent magnets on the opposing magnetic work.

The permanent magnet is preferably an irreversible magnet in which the polarity of the magnetized magnetic pole does not change by excitation.
Thereby, the magnetic work facing the permanent magnet having a coercive force is magnetized to the same magnetic pole only by facing the peeling jig in the laminated state, so even if the electromagnet is not necessarily energized, The magnetic workpieces can be separated from each other.

  In the peeling apparatus, the separation jig is separated from the above-described peeling jig, which is disposed with one front side faced to one side of a laminated steel plate in which a plurality of steel plates made of a magnetic material loaded on a loading table are laminated. And a pickup arm that supports a pickup head that holds the uppermost steel plate by suction.

According to the above configuration, when the laminated steel plates opposed to the pair of permanent magnets are separated from each other and the electromagnet is energized in the demagnetization mode or the demagnetization mode, it becomes easy to take out only the uppermost steel plate attracted and held by the pickup arm, and the remaining The laminated steel sheet can be returned to the original laminated state.
Therefore, it is possible to reduce the size without enlarging the apparatus configuration. Further, by shortening the energization time to the coil of the electromagnet as much as possible, it is possible to save power consumption and prevent the separation ability from being lowered due to heat generation.

  If the above-described peeling jig is used, the magnetic workpieces can be magnetized by the same magnetic poles and separated from each other only by placing the laminated magnetic workpieces facing the permanent magnets. When taking out the workpiece, by energizing the electromagnet in the demagnetization mode or demagnetization mode, only one of the top layer can be easily taken out, reducing power consumption and shortening the energization time to suppress heat generation. Therefore, the stable separation performance of the peeling jig can be maintained.

  Moreover, in the peeling apparatus using the peeling jig mentioned above, size reduction can be achieved, without enlarging an apparatus structure. Further, by shortening the energization time to the coil of the electromagnet as much as possible, it is possible to save power consumption and prevent the separation ability from being lowered due to heat generation. Accordingly, it is possible to promote downsizing, simplification, and energy saving of the peeling device.

It is the front view, horizontal sectional view, and vertical sectional view of the peeling jig. It is explanatory drawing of the magnetic circuit formed by the energization / non-energization of the peeling jig of FIG. It is explanatory drawing of a peeling apparatus. It is a conceptual diagram which shows the peeling operation | movement by the peeling apparatus of FIG.

Hereinafter, an embodiment of a peeling jig and a peeling apparatus according to the present invention will be described with reference to the accompanying drawings.
First, the configuration of the peeling jig 1 will be described with reference to FIGS. 1 and 2. In FIG. 1C, a pair of coils 3 are arranged side by side on a magnetic yoke 2 (for example, a soft iron material). The magnetic yoke 2 includes a core portion 2a inserted into the center portion of the pair of coils 3, a yoke bottom portion 2b connected to the core portions 2a, and an upright front formed from the yoke bottom portion 2b. Covering side yoke portions 2c are respectively formed. The electromagnet 4 is formed by the magnetic yoke 2 and a pair of coils 3.

  In FIG. 1B, permanent magnets 5 are disposed in contact with the front end surfaces of the pair of core portions 2a of the electromagnet 4, respectively. The pair of permanent magnets 5 are magnetized in the N-pole or S-pole in the front-rear direction. As the permanent magnet 5, an irreversible magnet that does not reverse the polarity even when the energization direction to the coil 3 is changed, for example, a rare earth magnet (neodymium magnet, bond magnet, etc.) or a ferrite magnet is preferably used. In the present embodiment, as shown in FIG. 1A, the same magnetic pole (for example, the left row is the S pole and the right row is located at a plurality of locations (for example, three locations) in the height direction on the front end surfaces of the pair of core portions 2a. Are adjacent to each other with N poles). The magnetic poles of the permanent magnets 5 arranged on the left and right may be reversed.

  The opening end on the front side of the magnetic yoke 2 is covered with a casing 7 made of a non-magnetic material (aluminum, stainless steel, brass, resin, etc.). The casing 7 is assembled to the outer surface of the side wall of the magnetic yoke 2 with screws. Further, as shown in FIG. 1B, two rails 8 are provided on the front surface of the casing 7 in the height direction. This rail 8 is a non-magnetic material, and is used as a spacer when the peeling jig 1 is disposed opposite to a laminated surface (side surface portion) of a magnetic material work to be described later. Further, a power cord drawing terminal 9 for supplying power to the coil 3 is provided on the yoke bottom 2 b of the magnetic yoke 2. The power cord lead-out terminal 9 is not limited to the yoke bottom 2b of the magnetic yoke 2, and may be provided on any one of the side yokes 2c that stand upright from the yoke bottom 2b.

For the peeling jig 1 formed as described above, before energization, for example, as shown in FIG. 2 (A), for example, magnetism is passed through a pair of core parts 2a through a pair of permanent magnets 5 and opposite magnetic work pieces. Circuit 10 is formed. That is, the magnetic circuit 10 is formed between the permanent magnet 5 and the magnetic work is magnetized by the same magnetic pole and separated from each other simply by setting the laminated magnetic work facing the peeling jig 1. It becomes a state.
When the electromagnet 4 is energized in a predetermined direction, the magnetic flux generated in the electromagnet 4 and the magnetic flux generated from the magnetic poles of the permanent magnet 5 act on the opposing magnetic work to increase the amount of magnetic flux, thereby separating the work. Performance can also be improved (magnetization mode).

  Next, when taking out the uppermost one of the magnetic workpieces in the separated state, the magnetic circuit 10 can be easily taken out by weakening the magnetic flux acting on the magnetic workpiece from the peeling jig 1. Therefore, as shown in FIG. 2 (B), the electromagnet 4 is energized in a predetermined direction to be in a demagnetization mode, thereby reducing the amount of magnetic flux acting on the opposing magnetic work from the pair of permanent magnets 5 and separating them. Of the magnetic workpieces, only one of the uppermost layers can be easily taken out, and the remaining magnetic workpieces can be returned to the laminated state.

Alternatively, as shown in FIG. 2C, the demagnetization mode in which the amount of current flowing to the electromagnet 4 is increased in the demagnetization mode can be separated by canceling the magnetic flux acting from the pair of permanent magnets 5. The work of taking out only the uppermost one of the magnetic work pieces can be reliably and quickly performed.
Therefore, only when the separated magnetic work is taken out, by energizing the electromagnet 4 in the demagnetization mode or the demagnetization mode, only one of the uppermost layer can be easily taken out, reducing power consumption and energizing time. By shortening the length, heat generation can be suppressed and stable separation performance of the peeling jig 1 can be maintained.

  Next, an example of a peeling apparatus using the above-described peeling jig 1 will be described with reference to FIG. The laminated body in which the steel plates 18 as magnetic work are laminated is loaded on a pallet 19 (loading table). The pallet 19 is supported by a lift device 20 having a variable height. The lift device 20 can change the height position of the pallet 19 by changing the standing angle of the intersecting links 20a and 20b. When a plurality of permanent magnets 5 are provided adjacent to each other as the peeling jig 1 in the height direction, the height of the lift device 20 is not necessarily variable.

A pickup device 21 is provided in the vicinity of the lift device 20. A pickup arm 22 is provided on the upper part of the apparatus main body 21a. A pickup head 22 a is swingably supported on the pickup arm 22. The pickup head 22a is provided with adsorption elements 22b that adsorb and hold the uppermost steel plate 18 at a plurality of locations. Various elements such as air adsorption and magnetic adsorption are used as the adsorption element 22b. Moreover, the peeling jig 1 is provided in the upper part of the apparatus main body 21a in the vicinity of the steel plate 18 laminated on the pallet 19. In the peeling jig 1, the permanent magnet 5 serving as a magnetic flux acting surface is disposed to face one side surface of the laminated steel plate 18. The peeling jig 1 is set on the pallet 19 in contact with the side surface of the laminated steel plate 18 via the rail 8.
Note that the peeling jig 1 may be provided over the entire surface of the laminated steel plate 18 in the height direction, or may be disposed so as to face the upper side surface of the laminated steel plate 18.

  In FIG. 3, the pickup arm 22 supported by the apparatus main body 21a is supported so as to be able to perform forward and reverse rotation operations. The steel plate 18 sucked and held by the pickup head 22a is transferred by being transferred to a transfer device such as a conveyor (not shown) by rotating the pickup arm 22 by 180 ° or 90 °, for example. The pallet 19 on which the steel plate 18 has been transferred is transferred by the pallet transfer device 23. When the empty pallet 19 is conveyed by the pallet conveying device 23, the next pallet 19 on which the steel plates 18 are stacked is transferred to the lift device 20.

  The peeling jig 1 is simply loaded with a plurality of steel plates 18 on the pallet 19, magnetized and separated by the same magnetic pole, and energized to the electromagnet 4 to return to the laminated state by demagnetizing or demagnetizing. be able to.

In other words, the laminated steel plate 18 can be separated only by being disposed opposite to the permanent magnet 5. When the electromagnet 4 is energized in the magnetization mode, the amount of separation between the steel plates 18 increases, and the separation operation can be performed reliably.
When the electromagnet 4 is energized in the demagnetization mode or the demagnetization mode, the uppermost steel plate 18 attracted and held by the pickup arm 22 can be easily taken out, and the remaining laminated steel plates 18 can be returned to the original laminated state.
Therefore, it is possible to reduce the size without enlarging the apparatus configuration. Further, by shortening the energization time of the electromagnet 4 to the coil 3 as much as possible, it is possible to save power consumption and prevent the separation ability from being lowered due to heat generation.

  FIG. 4A illustrates the bipolar peeling jig 1 as an example, and shows a state in which the laminated steel plates 18 loaded on the pallet 19 are set to face the peeling jig 1. Since the magnetic flux acting surface of the peeling jig 1 is magnetized to the same magnetic pole (N pole or S pole) in the height direction (lamination direction), the opposite laminated steel plate 18 has the same magnetic pole (S pole or N pole). ) Occurs. Thereby, a repulsive force acts on the laminated steel plates 18 and can be separated from each other.

  When the electromagnet 4 is energized in the demagnetization mode (see FIG. 2B) or the demagnetization mode (see FIG. 2C), the magnetic circuit 10 shown in FIG. The steel plate 18 can be easily taken out, and the remaining laminated steel plate 18 returns to the original laminated state.

  The peeling jig 1 may be disposed to face one side surface of the laminated steel plate 18 as shown in FIG. 4 (A), but is arranged to face both side surfaces of the laminated steel plate 18 as shown in FIG. 4 (B). May be. Moreover, you may provide the peeling jig | tool 1 in multiple places in any one side surface or both side surfaces. Furthermore, as shown in FIG. 4 (C), the peeling jig 1 may be fitted to the support column 24 supported upright on the frame 27 so as to be slidable in the height direction. A slide member 25 is slidably fitted into the frame 27, and the position of the peeling jig 1 in the height direction can be adjusted by the slide member 25. The slide member 25 is fixed at a predetermined height position by tightening the screw 26 that is screw-fitted to the slide member 25 with respect to the column 24.

  According to the above configuration, it is possible to reduce the size without increasing the size of the device configuration. Further, by shortening the energization time to the coil of the electromagnet as much as possible, it is possible to save power consumption and prevent the separation ability from being lowered due to heat generation. Accordingly, it is possible to promote downsizing, simplification, and energy saving of the peeling device.

In each of the above-described embodiments, the peeling jig 1 in which three permanent magnets 5 are stacked on the magnetic yoke 2 in the height direction (work stacking direction) is illustrated. Or either. Further, the magnetic work is not limited to the steel plate 18 but may be another work such as an iron plate.
Further, the magnetic poles at the front end and the rear end of the permanent magnet 5 are not limited to those shown in the figure, and may have opposite polarities.

  DESCRIPTION OF SYMBOLS 1 Separation jig 2 Magnetic body yoke 2a Core part 2b Yoke bottom part 2c Side yoke part 3 Coil 4 Electromagnet 5 Permanent magnet 7 Casing 8 Rail 9 Power cord lead-out terminal 10 Magnetic circuit 18 Steel plate 19 Pallet 20 Lift device 20a, 20b Link 21 Pickup Device 21a Device main body 22 Pickup arm 22a Pickup head 22b Adsorption element 23 Pallet transport device 24 Post 25 Slide member 26 Screw 27 Frame

Claims (5)

Each magnetic body work is arranged on the main body of the peeling device so as to face one side of a plurality of magnetic work pieces made of a magnetic material loaded on a loading table, and a magnetic circuit is always formed between the magnetic work pieces. Is a peeling jig that magnetizes the magnetic poles in a separated state,
A pair of coils arranged side by side, and a core part is inserted in the center part of the pair of coils, and a side yoke part is formed to stand forward from the bottom of the yoke connecting the core parts and covering the outer periphery of each coil. An electromagnet having a magnetic yoke,
A pair of permanent magnets that are disposed in contact with the front end surfaces of the pair of core portions of the electromagnet and that form magnetic flux acting surfaces magnetized on different magnetic poles ,
The magnetic force generated on the magnetic flux acting surface by a demagnetization mode in which the electromagnet is energized to weaken a magnetic flux acting on the magnetic workpiece from the permanent magnet and a demagnetization mode in which the magnetic flux acting on the permanent magnet is canceled. A peeling jig characterized in that each strength can be switched.   The peeling jig according to claim 1, wherein the pair of permanent magnets is disposed adjacent to the front end surfaces of the pair of core portions at a plurality of locations in the height direction with the same magnetized magnetic pole.   In the demagnetization mode and the demagnetization mode, a current is applied to the electromagnet in the opposite direction so that the magnetic flux generated in the electromagnet and the magnetic flux generated from the magnetic poles of the pair of permanent magnets are overlapped and opposed to each other. The peeling jig according to claim 1, further comprising a magnetizing mode that acts on the magnetic field.   The peeling jig according to any one of claims 1 to 3, wherein the permanent magnet is an irreversible magnet in which the polarity of the magnetized magnetic pole does not change by excitation. The peeling jig according to any one of claims 1 to 4, wherein a permanent magnet is disposed opposite one side surface of a laminated steel plate in which a plurality of steel plates made of a magnetic material loaded on a loading table are laminated. ,
And a pickup arm that supports a pickup head that sucks and holds the uppermost steel sheet separated by the peeling jig.

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