JP2553895B2 - Floater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to the above-mentioned large number of stacked iron plates when they are taken out one by one and sent to the next step, for example, a pressing step. The present invention relates to a floater in which the ends of the iron plates can be floated so as to be spaced apart from each other so that the iron plates can be easily taken.

(Prior Art) In a conventional floater, as shown in FIG. 8, a magnetic flux applying member 4h in which the tip surfaces of the magnetic poles 4ah and 4bh are flat surfaces is provided inside a case 3h having a rectangular planar shape. As for what is provided, an iron plate having a straight edge shape as shown by an imaginary line, for example, an iron plate 1'having a rectangular planar shape can be appropriately separated.

(Problems to be Solved by the Invention) However, in the case of the above configuration, the iron plate 1 in which the shape of the end line 1a is an arc shape as shown in FIG.
In the case of attempting to separate the magnetic poles, a gap is formed between the end edge 1a having the arc shape as described above and the tip surface of the magnetic pole,
There was a problem that the magnetic flux 25h from the magnetic flux applying member 4h could not work well on the iron plate 1 and the mutual separation of the iron plates became uncertain.

Except for the above-mentioned problems of the prior art, the present invention can appropriately separate the layered stacked iron plates whose edges have a straight shape, and the edge has a concave arc shape. An object of the present invention is to provide a floater capable of appropriately separating the stacked iron plates from each other.

(Means for Solving Problems) A floater according to the present invention comprises a base frame and a magnetic flux applying member provided on the base frame, and the base frame is for contacting an edge of an iron plate to be levitated. Of the non-magnetic material, the surface of the side plate on the side of the iron plate is formed to bulge in an arc shape in the direction orthogonal to the floating direction of the iron plate, while the magnetic flux applying member extends along the inner surface of the side plate. The magnetic flux applying member is configured so that the pair of magnetic poles rotate in a direction orthogonal to the iron plate levitation direction along the concave arc surface of the side plate. It was movably pivotally attached to the base frame.

(Operation) When a magnetic flux is applied from the magnetic flux applying member to the end portions of a large number of stacked iron plates, the end portions of the iron plates are magnetized to have the same magnetism. Therefore, the ends of the iron plates repel each other, and a space is formed between them.

(Example) Hereinafter, drawings showing an example of the present application will be described. First
In FIGS. 3 to 3, 1 is an iron plate in which a large number are stacked, and 2 is a floater for separating the iron plates 1 at their edges. In the floater 2, 3 is a base frame, 4 is a magnetic flux applying member, and is pivotally attached to the base frame 3 with a pivoting member 5. The base frame 3 is composed of a cylindrical side plate 7, and a bottom plate 8 and a top plate 9 attached to one end and the other end of the side plate 7, respectively. The base frame 3 supports the magnetic flux applying member 4 and also serves as a protective cover for the magnetic flux applying member 4. ing. Each member of the base frame 3 is made of a non-magnetic material such as non-magnetic stainless steel.

Next, the magnetic flux applying member 4 constitutes a magnet body having a U-shaped cross section in a horizontal plane, and the U-shaped tip portions are magnetic poles 4a and 4b. The end surfaces 4a ', 4b' of these magnetic poles are formed in an arc surface centered on the center of rotation of the magnetic flux applying member 4 with respect to the base frame 3 (corresponding to the axis of the side plate 7), and on the inner surface of the side plate 7. They face each other with a slight gap 10 therebetween. The magnetic flux applying member 4 is composed of two permanent magnets 11 and 12 and a yoke 13 which magnetically connects the magnetic poles of each one of the magnets. The magnets 11 and 12 and the yoke 13 are integrally connected. The magnetic poles 4a and 4b are constituted by the other magnetic poles of the magnets 11 and 12, respectively. The magnetic flux applying member 4 may be configured by an electromagnet having a magnetizing coil as is well known.

Next, the pivot member 5 comprises a bearing 17 attached to the bottom plate 8 and the top plate 9 of the base frame, and a shaft 18 attached to the yoke 13 of the magnetic flux applying member 4, and the shaft 18 is rotated by the bearing 17. It is movably supported. A radial bearing or a thrust bearing may be used as the bearing 17 so that the magnetic flux applying member 4 can be lightly rotated with respect to the base frame 3.

In the case of the above configuration, when the end portions 1b of the iron plates 1 placed in a stacked manner on the mounting surface 23 are separated from each other, the floater 2 is mounted along with the end edge 1a. Placed on the placing surface 24, the height of the placing surface 24 is set so that the magnetic poles 4a and 4b are exactly opposed to the end 1a of the iron plate 1 placed on the placing surface 23. Good to keep. Mounting surface 2 above
3,24 may be the floor of the workshop or the top of the workbench.

In the above-mentioned state, as shown in FIG. 1, the magnetic flux 25 emitted from the magnetic poles 4a and 4b of the magnetic flux applying member 4 passes through the inside of each superposed iron plate 1. As a result, in the end portions 1b of the iron plates 1 that are stacked as shown in FIG. 3, vertically adjacent portions are magnetized to have the same magnetism. As a result, the magnetized portions of the iron plate 1 mutually repel each other, and as a result, the end portion 1b of each iron plate 1 is shown in FIGS.
As shown in the figure, they are vertically separated from each other. In this case, since the side plate 7 is made of a non-magnetic material, adsorption of the edge 1a of the iron plate 1 on the surface does not occur, and the contact between the cylindrical side plate 7 and the edge 1a is normally (Side plate 7 and edge
Since the point (line) contact is made (except when the arc shape of 1a is the same), the frictional force that hinders the floating of the iron plate is extremely small,
The separation of the edges of the iron plate from each other is done properly.

As described above, the magnetic flux applying member 4 in the floater 2
When the magnetic flux 25 from the iron plate 1 is applied to the iron plate 1, the magnetic flux applying member 4 is rotatable with respect to the base frame 3, so that the magnetic flux applying member 4 has the tips of the two permanent magnets on the edge 1a of the iron plate 1. Rotate to be drawn to the closest position. That is, the magnetic flux applying member 4 itself changes its direction by the force of attracting the iron plate due to the magnetic force, and the magnetic flux 25 is directed in the direction in which the magnetic flux 25 reaches the iron plate 1 most efficiently. The orientation is 4 for each pole.
This is the direction in which the gap between the end faces 4a ', 4b' of the a, 4b and the end face 1a of the iron plate 1 becomes the smallest and the magnetic resistance there becomes the smallest. In this way, since the magnetic flux applying member 4 changes its direction by itself, the floater 2 can be simply placed so that its side plate 7 follows the edge 1a of the stacked iron plate 1, and the above-mentioned separation of the end portions from each other can be performed. It can be done properly.

Further, when the separation is performed as described above, the plurality of iron plates 1 are also positioned by the magnetic force from the magnetic flux applying member 4 such that each edge 1a is in contact with the side plate 7 of the floater 2. Furthermore, in the case of the above-mentioned work, the floater 2 that has been placed in advance
It is also possible to place a plurality of iron plates 1 in the vicinity of the so as to stack them so that their ends are separated from each other.

Next, FIG. 4 shows various examples of the arrangement position of the floater 2 with respect to the iron plate 1. As described above, the floater 2 in which the magnetic flux applying member 4 is rotatable and the side plate 7 has a cylindrical shape is represented by typical examples I to H with respect to the deformed iron plate 1 as shown in FIG. In any case, the magnetic flux is applied to the iron plate 1 regardless of the location along the edge.
The iron plate 1 can be appropriately separated by properly

Next, FIG. 5 shows a different example of how to use the floater 2. As shown, two floaters 2, 2 are arranged along the iron plate 1 to separate the stacked iron plates 1 from each other. Shows an example in which the steps are performed over the entire area of the end portion 1b.

Next, FIG. 6 shows a floater having a different horizontal sectional shape. This example shows an example in which the magnetic flux applying member 4e is restricted within a fixed swinging range (for example, ± 30 °). In this example, the magnetic pole 4ae is in the swinging movable range of the magnetic flux applying member 4e. The side plate 7e is formed in an arc shape only in the portion surrounding the tip surface of 4be.

In addition, parts that are considered to be the same or equivalent in configuration to those in the previous figure in terms of function are denoted by the same reference numerals as those in the previous figure with the letter e added to omit redundant description. (Also, in the case of the next figure, the same letter is used and the letter "f" is added to omit the duplicated explanation.) Next, FIG. 7 shows a further different embodiment, in which the base frame 3f is shown.
On the other hand, an example in which the magnetic flux applying member 4f is fixedly provided is shown. Even in such a floater 2f, the magnetic flux 25f from the magnetic flux applying member 4f efficiently reaches the iron plate 1f,
By artificially deciding the direction of the floater 2f with respect to the iron plate 1f, the ends of the iron plate 1f whose edges are concavely curved can be appropriately floated and separated.

(Effect of the invention) As described above, the present invention is applicable not only to the iron plate 1 having a straight edge, but also to the stacking of the iron plates 1 having a concave arc edge. , It has the feature that it can be appropriately floated and separated.

[Brief description of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a horizontal cross-sectional view showing a magnetic flux application state to an iron plate (I- in FIG. 2).
2 is a sectional view taken along the line II-II in FIG. 1 (the magnetic flux applying member has a side shape), FIG. 3 is a perspective view showing a usage state, and FIG. 4 is a usage state. FIG. 5 is a plan view showing a different example, FIG. 5 is a plan view showing a further different example of the usage state,
FIG. 6 is a horizontal sectional view showing a different embodiment, FIG. 7 is a horizontal sectional view showing a different embodiment, and FIG. 8 is a plan view schematically showing a conventional example. 1 ... Iron plate, 2 ... Floater, 3 ... Base frame, 4 ... Magnetic flux applying member.

Claims (1)

(57) [Claims] 1. A base frame and a magnetic flux applying member provided on the base frame, wherein the base frame has a side plate made of a non-magnetic material for contacting an edge of an iron plate to be levitated. The surface of the side plate on the iron plate side is formed to bulge in an arc shape in a direction orthogonal to the iron plate levitation direction, while the magnetic flux applying member is a pair of magnetic poles arranged along the inner surface of the side plate. The pair of magnetic poles are pivotally attached to the base frame so that the pair of magnetic poles are rotatable along the concave arc surface of the side plate in a direction orthogonal to the iron plate floating direction. A floater characterized by being provided.