JP6959491B2 - Separation device for thin plate materials of non-magnetic materials such as laminated aluminum - Google Patents

Description

The present invention relates to a separation device for a non-magnetic material such as aluminum in a material supply device for manufacturing stamped parts of an automobile.

In the production of stamped parts for vehicle bodies, if two or more materials are pressed by a die, the press machine is stopped due to an overload, and in some cases, the die is damaged, which hinders production. Therefore, it is necessary to accurately separate and supply the laminated materials for pressed parts one by one.

Most of the stamped parts for the vehicle body are made of mild steel plate, and a magnet is used for the separation by utilizing the characteristic that the mild steel plate is a magnetic material. The material is magnetized by bringing an electromagnet or a permanent magnet into close contact with the side surface of the laminated material, and the material itself is magnetized, so that separation is achieved by using the repulsive force of the same pole of the magnet generated between the materials. Since the magnetization method using this magnet is the most effective as a separation method for a magnetic material, a magnet type separation device has been widely and generally used since ancient times.

In addition to mild steel sheets, aluminum materials are also used for the purpose of reducing the weight of automobiles. Since aluminum material is a non-magnetic material, a magnetic separator for iron material, which is a magnetic material, cannot be used. A method of lifting the magnet by rolling it up or a method of combining them is used.

In the method using a saw blade-shaped instrument, a saw blade-shaped hook is applied to the side surface of the laminated material, and the hook is pulled up by rubbing from the bottom to the top for separation. At this time, shavings of the material are generated, and these chips become foreign substances, which become scratches during molding and contribute to adversely affecting the surface quality of the pressed parts.

In the method using strong wind, the laminated material is separated by rolling up the material by applying a strong wind to the edge of the material from the side or slightly diagonally below. However, since the material itself is in a state of being in close contact with the residual cleaning liquid, there is a problem in the certainty of separation, and the separation effect is remarkably low as compared with the magnet type separation device for iron materials.

The method of lifting the material from the edge is to control the ascending timing and speed of multiple suction cups for lifting the laminated material, or both of them, and to lift the material from the edge. Therefore, it is a method of separating the material that tends to be stuck by the residual cleaning liquid so as to peel it off. However, for many materials, fine adjustment by trial and error is required, a lot of labor is required, and since the fine adjustment is performed, the certainty of separation is low.

Japanese Unexamined Patent Publication No. 2009-219339 Japanese Unexamined Patent Publication No. 2012-090467 Japanese Unexamined Patent Publication No. 2016-160055

As a method of separating aluminum material, which is a non-magnetic material, we have devised a method of using a saw blade or strong wind and a lifting method, but there is a problem of chips when the saw blade contacts and low certainty of separation. There is a point. In addition, in a line that mixes and produces mild steel sheets and aluminum materials, it is necessary to equip a separation device for aluminum materials in addition to the magnet type separation device for mild steel sheets, which makes it versatile due to the complexity of equipment. It is a cause of restrictions and expensive equipment. Therefore, a separating device capable of reliably separating an aluminum material which is a non-magnetic material and which can be applied to a mild steel plate material is provided.

The variable magnetic flux separator of the present invention has a structure in which a plurality of independent electromagnets are vertically arranged in a row or arranged in a plurality of rows, and the current of the electromagnets of the variable magnetic flux separator is individually controlled to obtain a magnetic flux. It is characterized by adjusting the overall magnetic flux distribution of the variable magnetic flux separator.

In the variable magnetic flux separator, for a non-magnetic conductive material, the current of the electromagnet of the variable magnetic flux separator is individually controlled to increase or decrease the magnetic flux of the electromagnet, and the variable magnetic flux separator of the variable magnetic flux separator. By forming the distribution of the magnetic flux of the entire variable magnetic flux separator generated in all the electromagnets into a waveform in the vertical direction and controlling the vertical waveform distribution of the magnetic flux to move upward on the time axis, When the magnetic flux variable separator is used in close contact with the side surface of the thin non-magnetic conductive material in which the laminated magnetic flux variable separator is used, the magnetic flux induced in the non-magnetic conductive material and the magnetic flux variable separator As an interaction with the magnetic flux of the electromagnet, the non-magnetic conductive material is separated by using the upward force generated in the present material, and the magnetic material is separated. By holding the currents of all the electromagnets of the variable magnetic flux separator in the same direction and constant, when the variable magnetic flux separator is brought into close contact with the side surface of the magnetic material of the thin plate, the magnetic material is the same. It is characterized by a control method of the magnetic flux variable type separating device which is magnetized to a pole and separates a magnetic material by utilizing the repulsive force of a magnetic force between the materials.

It can be applied to the separation of non-magnetic conductive materials such as aluminum, stainless steel, and copper.

For magnetic materials such as mild steel plates, by keeping the magnetic flux in this device constant, it can also be applied to the separation of magnetic materials.

It can be applied to both non-magnetic and magnetic materials, and equipment can be simplified.

It is explanatory drawing of the structure and magnetic flux distribution of the magnetic flux variable type separator. It is explanatory drawing of the application example of the magnetic flux variable type separation apparatus.

Arago's disk is known as the basic principle of induction motors. This means that the movement of the magnet causes an eddy current generated by electromagnetic induction in the non-magnetic metal disk, and the magnetic flux interacts with the magnetic flux of the magnet to rotate the disk. Based on this principle, induction motors and linear motors control the current flowing through the arranged electromagnetic coils to change and move the magnetic flux.

FIG. 1 shows an explanatory diagram of the structure of the magnetic flux variable type separator (10) of the present invention, the magnetic flux (13), and its distribution (14). The electromagnets (11) forming the magnetic flux variable separator (10) are independent of each other, and the current (12) of each electromagnet (11) is individually controlled to control the magnetic flux (13) of the electromagnet (11) and its distribution. Adjust (14). The direction of the magnetic flux (13) shown in FIG. 1 is an example, and the direction of the magnetic flux (13) may be the exact opposite of that shown in the figure.

FIG. 2 shows an example of application of the variable magnetic flux separator (10) to a non-magnetic conductive material. For a non-magnetic conductive material such as aluminum, the current (12) of the electric magnet (11) is controlled to change the magnetic flux (13) to induce the non-magnetic conductive material (15). The material is separated by utilizing the upward force generated in the non-magnetic conductor material (15) as an interaction with the magnetic flux (17) generated by the electric current (16).

The control method of the magnetic flux variable type separator (10) for the non-magnetic conductor material will be described in more detail. The polarities of all the electromagnets (11) of the variable magnetic flux separator (10) are kept in the same direction of the magnetic flux (13) without alternating, and the current (12) of the electromagnet (11) is individually controlled. The magnetic flux (13) is increased or decreased. By increasing or decreasing the magnetic flux (13), that is, changing, the magnetic flux (17) in the same direction is induced in the non-magnetic conductive material (15). Further, the current (12) of the electromagnet (11) is individually changed, and the distribution (14) of the entire magnetic flux (13) generated by all the electromagnets (11) of the magnetic flux variable separator (10) has a waveform in the vertical direction. It is controlled so as to form, and the vertical waveform distribution (14) of the magnetic flux (13) is controlled to move upward on the time axis. As a result, the conductivity of the non-magnetic material acts as an interaction between the magnetic flux (13) of the variable magnetic flux separator (10) and the magnetic flux (17) induced in the conductive material (15) of the non-magnetic material. The non-magnetic conductive material (15) is separated by utilizing the upward force generated in the body material (15).

The electromagnets of the linear motors (Patent Documents 1 and 2) alternate their polarities and utilize the attractive and repulsive forces of the magnets. However, the variable magnetic flux separator (10) of the present invention has all the electromagnets (11). ) Is not alternated, the magnetic flux (13) is increased or decreased by increasing or decreasing the current (12) while keeping the direction of the magnetic flux (13) in the same direction, and the current (12) of the electromagnet (11) is individually increased or decreased. By adjusting, the distribution (14) of the magnetic flux (13) is made into a waveform in the entire magnetic flux variable type separator (10), and the waveform distribution (14) of the magnetic flux (13) is controlled to move upward. The force that is the principle of the Arago disk acting between the magnetic flux (13) of the variable magnetic flux separator (10) and the magnetic flux (17) induced in the non-magnetic conductive material (15). To use.

In addition to the above-mentioned application to the non-magnetic material, the currents (12) of all the electromagnets (11) of the magnetic flux variable type separator (10) are held in the same direction and constantly with respect to the magnetic material. Magnetic materials are magnetized to the same pole and separated using the magnetic repulsive force between the materials.

In the conventional material separation device (Patent Document 3), separate material separation devices are required for both the magnetic material and the non-magnetic material, which complicates the structure of the equipment and imposes production restrictions such as versatility. At the same time, it was one of the reasons for the high price of equipment. The variable magnetic flux separator (10) of the present invention can handle both magnetic and non-magnetic conductors by appropriately controlling the current (12) of the electromagnet (11), thus simplifying the equipment. can.

It can be applied to the separation of the conductive material of laminated thin plates regardless of whether it is a magnetic material or a non-magnetic material.

10 Variable magnetic flux separator 11 Electromagnetic flux variable separator 12 Electromagnetic current of variable magnetic flux separator 13 Magnetic flux of electromagnet of variable magnetic flux separator 14 Distribution of magnetic flux of variable magnetic flux separator 15 Conductivity of non-magnetic material Body material 16 Induced current 17 Magnetic flux generated by the induced current

Claims (3)

A group of independent magnets arranged vertically in a row, or a group of vertically arranged groups arranged horizontally in multiple rows, for a non-magnetic conductive material. Keeps the direction of the magnetic flux of the electric magnets in the same direction in all of these multiple independent electric magnet groups, and controls the current of the electric magnets individually to increase or decrease the magnetic force, and distributes the total magnetic force generated in all the electric magnets. Is formed into a waveform in the vertical direction, and by controlling the change in the vertical waveform distribution of this magnetic flux so as to move upward on the time axis, a thin non-magnetic material in which the entire group of electromagnets is laminated. When used in close contact with the side surface of the conductive material, the upward force generated in the non-magnetic conductive material as an interaction between the magnetic flux induced in the material and the magnetic flux of the electromagnet group. The non-magnetic conductive material is separated by using the above, and the currents of all the electromagnets constituting this electromagnet group are held in the same direction and constant with respect to the magnetic material, and the electromagnet group is maintained. Lamination characterized by magnetizing the magnetic material to the same pole and separating the magnetic material using the repulsive force of the magnetic force between the materials when the entire material is brought into close contact with the side surface of the magnetic material of the thin plate. A variable magnetic flux separator that is effective for both thin non-magnetic thin plates and laminated magnetic conductive thin plates. A control device that individually controls the current of the electromagnet group forming the magnetic flux variable separator to adjust the magnetic flux and its magnetic flux distribution. For a non-magnetic conductive material, the magnetic flux variable separator While keeping the directions of the magnetic fluxes of all the electromagnets in the same direction, the currents of the electromagnets are individually controlled to increase or decrease the magnetic flux, and the distribution of the entire magnetic flux generated by the variable magnetic flux separator is formed into a vertical waveform. In addition, by controlling the change in the vertical waveform distribution of the magnetic flux so as to move upward on the time axis, the side surface of the non-magnetic conductive material of the thin plate on which the variable magnetic flux separator is laminated. As an interaction between the magnetic flux induced in the same material and the magnetic flux of the electromagnet group when used in close contact with the non-magnetic material, the upward force generated in the non-magnetic conductive material is used to make the non-magnetic material non-magnetic. The conductive material of the body is separated, and the currents of all the electromagnets of the magnetic flux variable separator are held in the same direction and constant with respect to the magnetic material, and the magnetic flux variable separator is made into a thin plate. The first aspect of claim 1 , wherein the magnetic material is magnetized to the same pole when it is brought into close contact with the side surface of the magnetic material, and the magnetic material is separated by utilizing the repulsive force of the magnetic force between the materials. flux variable control unit of the magnetic flux variable separator. In the variable magnetic flux separator and the variable magnetic flux controller, the magnetic flux is maintained for the non-magnetic conductive material while maintaining the magnetic flux directions of all the electromagnets of the variable magnetic flux separator in the same direction. The current of the electromagnets of the variable separator is individually controlled to increase or decrease the magnetic force, and the distribution of the entire magnetic flux generated by all the electromagnets of the variable magnetic flux separator is formed into a waveform in the vertical direction, and the magnetic flux of this magnetic flux is increased or decreased. By controlling the waveform distribution in the vertical direction to move upward on the time axis, the same when the magnetic flux variable separator is used in close contact with the side surface of a thin non-magnetic conductive material on which the magnetic flux variable separator is laminated. As an interaction between the magnetic flux induced in the material and the magnetic flux of the variable magnetic flux separator, the non-magnetic conductive material is subjected to an upward force generated in the non-magnetic conductive material. For the magnetic material, the currents of all the electromagnets of the variable magnetic flux separator are held in the same direction and constant, and the variable magnetic flux separator is placed on the side surface of the magnetic material of the thin plate. The variable magnetic flux separator according to claim 1 , wherein the magnetic material is magnetized to the same pole when they are brought into close contact with each other, and the magnetic material is separated by utilizing the repulsive force of the magnetic force between the materials. A method for separating a thin plate effective for both a laminated non-magnetic thin plate and a laminated magnetic conductor thin plate using the variable magnetic flux control device according to claim 2.

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