MAGNETIC SUBSTANCE HOLDING DEVICE
First Claim
1. A magnetic substance holding device for holding and detaching a workpiece that is a magnetic substance, the device comprising:
- a first pole piece assembly comprising at least one first pole piece having a first face and a second face, the first pole piece being a magnetic substance, at least two second pole pieces, each of the second pole pieces having a first face and a second face and being a magnetic substance, and at least two first permanent magnets, one of an N-pole and an S-pole of each of the first permanent magnets being in contact with the first pole piece while the other of the N-pole and the S-pole thereof being in contact with the second pole pieces, respectively;
a second pole piece assembly comprising at least one third pole piece having a first face and a second face, the third pole piece being a magnetic substance, at least two fourth pole pieces, each of the fourth pole pieces having a first face and a second face and being a magnetic substance, and at least two second permanent magnets, their each one pole of opposite polarity to that of the poles of the first permanent magnets in contact with the first pole piece is in contact with the third pole piece while the pole of same polarity to that of the poles of the first permanent magnets in contact with the first pole piece is in contact with the fourth pole pieces, respectively, wherein the first face of the third pole piece faces the second face of the first pole piece while the first face of each of the fourth pole pieces faces the second face of a respective one of the second pole pieces;
at least one coil wound around the first pole piece and/or the third pole piece; and
a control device controlling electric current applied to the coil,wherein the first pole piece assembly and/or the second pole piece assembly is configured to be movable such that they are switched between a first arrangement in which the second faces of the first pole piece assembly are spaced apart from the first faces of the second pole piece assembly, and a second arrangement in which the second faces of the first pole piece assembly come in contact with the first faces of the second pole piece assembly, andwherein the control device which is magnetic substance controls holding and detaching of a workpiece on and from the first faces of the first pole piece assembly or the second faces of the second pole piece assembly, byway of controlling electric current applied to the coil to switch between the first arrangement and the second arrangement.
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Accused Products
Abstract
A magnetic substance holding device includes: a first pole piece assembly comprising at least one first pole piece, at least two second pole pieces, and at least two first permanent magnets; a second pole piece assembly comprising at least one third pole piece, at least two fourth pole pieces, and at least two second permanent magnets; a coil; and a control device. The first pole piece assembly and/or the second pole piece assembly is configured to be movable such that they are switched between a first arrangement in which the second faces of the first pole piece assembly are spaced apart from the first faces of the second pole piece assembly, and a second arrangement in which the second faces of the first pole piece assembly come in contact with the first faces of the second pole piece assembly. The control device controls holding and detaching of a workpiece on and from the first faces of the first pole piece assembly or the second faces of the second pole piece assembly, by way of controlling electric current applied to the coil to switch between the first arrangement and the second arrangement.
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Citations
14 Claims
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1. A magnetic substance holding device for holding and detaching a workpiece that is a magnetic substance, the device comprising:
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a first pole piece assembly comprising at least one first pole piece having a first face and a second face, the first pole piece being a magnetic substance, at least two second pole pieces, each of the second pole pieces having a first face and a second face and being a magnetic substance, and at least two first permanent magnets, one of an N-pole and an S-pole of each of the first permanent magnets being in contact with the first pole piece while the other of the N-pole and the S-pole thereof being in contact with the second pole pieces, respectively; a second pole piece assembly comprising at least one third pole piece having a first face and a second face, the third pole piece being a magnetic substance, at least two fourth pole pieces, each of the fourth pole pieces having a first face and a second face and being a magnetic substance, and at least two second permanent magnets, their each one pole of opposite polarity to that of the poles of the first permanent magnets in contact with the first pole piece is in contact with the third pole piece while the pole of same polarity to that of the poles of the first permanent magnets in contact with the first pole piece is in contact with the fourth pole pieces, respectively, wherein the first face of the third pole piece faces the second face of the first pole piece while the first face of each of the fourth pole pieces faces the second face of a respective one of the second pole pieces; at least one coil wound around the first pole piece and/or the third pole piece; and a control device controlling electric current applied to the coil, wherein the first pole piece assembly and/or the second pole piece assembly is configured to be movable such that they are switched between a first arrangement in which the second faces of the first pole piece assembly are spaced apart from the first faces of the second pole piece assembly, and a second arrangement in which the second faces of the first pole piece assembly come in contact with the first faces of the second pole piece assembly, and wherein the control device which is magnetic substance controls holding and detaching of a workpiece on and from the first faces of the first pole piece assembly or the second faces of the second pole piece assembly, byway of controlling electric current applied to the coil to switch between the first arrangement and the second arrangement. - View Dependent Claims (2, 3, 9, 10, 11)
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4. A magnetic substance holding device for holding and detaching a workpiece that is a magnetic substance, the device comprising:
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a first pole piece assembly comprising at least one first pole piece having a first face and a second face, the first pole piece being a magnetic substance, at least two second pole pieces, each of the second pole pieces having a first face and a second face and being a magnetic substance, and at least two first permanent magnets, one of an N-pole and an S-pole of each of the first permanent magnets being in contact with the first pole piece while the other of the N-pole and the S-pole thereof being in contact with the second pole pieces, respectively; a second pole piece assembly comprising at least one third pole piece having a first face and a second face, the third pole piece being a magnetic substance, at least two fourth pole pieces, each of the fourth pole pieces having a first face and a second face and being a magnetic substance, and at least two second permanent magnets, their each one pole of opposite polarity to that of the poles of the first permanent magnets in contact with the first pole piece is in contact with the third pole piece while the pole of same polarity to that of the poles of the first permanent magnets in contact with the first pole piece is in contact with the fourth pole pieces, respectively, wherein the first face of the third pole piece faces the second face of the first pole piece while the first face of each of the fourth pole pieces faces the second face of a respective one of the second pole pieces; a connection pole piece assembly comprising at least one first connection pole piece having a first face and a second face and being a magnetic substance, and at least two second connection pole pieces, each of the second connection pole pieces having a first face and a second face and being a magnetic substance, wherein the second face of the first connection pole piece faces the first face of the first pole pieces, and the second face of each of the second connection pole pieces faces the first face of the respective one of the second pole pieces; at least one coil wound around the first pole piece and/or the third pole piece; and a control device controlling electric current applied to the coil, wherein at least one of the first pole piece assembly, the second pole piece assembly and the connection pole piece assembly is configured to be movable such that they are switched between a first arrangement in which the second faces of the first pole piece assembly are spaced apart from the first faces of the second pole piece assembly while the first faces of the first pole piece assembly come in contact with the second faces of the connection pole piece assembly, and a second arrangement in which the second faces of the first pole piece assembly come in contact with the first faces of the second pole piece assembly while the first faces of the first pole piece assembly are spaced apart from the second faces of the connection pole piece assembly, and wherein the control device controls holding and detaching of a workpiece on and from the first faces of the connection pole piece assembly or the second faces of the second pole piece assembly, by way of controlling electric current applied to the coil to switch between the first arrangement and the second arrangement. - View Dependent Claims (5, 6, 7, 8, 12, 13, 14)
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Specification