JP2019093373A - Separation device of thin plate material of laminated nonmagnetic body such as aluminum - Google Patents

Abstract

To provide a separation device of material effective for both of non-magnetic body and magnetic body in consideration of a problem of chip upon contacting of a saw blade and low reliability in separation of nonmagnetic body such as aluminum material, requirement of juxtaposition of separation devices of both sides in a line of producing both of mild steel plate material and aluminum material and the causes of complication and cost increase of a facility apparatus.SOLUTION: In a magnetic flux variable type separation device having a structure formed by arranging a plurality of independent electromagnets vertically in a row or in a plurality of rows, a distribution of magnetic flux of the device assumes a wave form, and the magnetic flux distribution is controlled such that the magnetic flux distribution is moved in the vertical direction and, thereby, conductive body material of the nonmagnetic body is separated by utilizing interaction between the magnetic flux induced into the material and the nonmagnetic body. Further, with respect to the magnetic body material, by retaining magnetic flux of all electromagnets in the same direction and constantly, the magnetic body material is magnetized into the same pole and is separated by utilizing a repulsion force of magnetic force between materials.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a separation apparatus for nonmagnetic material such as aluminum in a material supply apparatus for manufacturing pressed parts of automobiles.

  When two or more pieces of material are pressed with a mold in the production of a vehicle body press part, the press machine stops due to an excessive load, and in some cases, the mold may be damaged or the like, which inhibits production. For this reason, it is necessary to accurately separate and supply the laminated materials for press parts one by one.

  The material of the pressed part for a vehicle body is mostly a mild steel plate, and a magnet is used for separation using the characteristic that the mild steel plate is a magnetic body. An electromagnet or a permanent magnet is brought into close contact with the side surface of the laminated material to magnetize the material, and the material itself is magnetized to achieve separation using the repulsive force of the same pole of the magnet generated between the materials. Since the magnetizing system using this magnet is the most effective as a separation method for the magnetic substance, a magnet type separation apparatus has been widely and widely used since old times.

  In addition to mild steel plates, some aluminum materials are also used for the purpose of reducing the weight of automobiles. Since aluminum is a nonmagnetic material, it is not possible to use a magnet type separation device for iron which is a magnetic material, and a method of hooking the material end with a saw blade-like device, a method of applying strong wind to the material end, or The method of lifting up from the side and the method of combining them are used.

  In the method using a saw blade-like tool, separation is achieved by placing a saw blade-like hook on the side of the laminated material and pulling up the hook to rub up from the bottom. At this time, swarf of material is generated, and this swarf becomes a foreign matter, and it becomes a flaw at the time of molding, which is a factor that adversely affects the surface quality of the pressed part.

  In the method using a strong wind, separation is achieved by applying a strong wind to the end of the material from the side or slightly diagonally below the stacked material and rolling up the material. 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 extremely low as compared with the magnet type separation device for iron material.

  The method of lifting the material so that the material is pulled from the end is to control the rising timing and / or the rising speed of the plurality of suction cups for lifting the laminated material and lift it so that it may come from the edge of the material. It is a method of separating so as to peel off a material which tends to be fixed by the residual cleaning liquid. However, for many materials, it is necessary to make fine adjustments by trial and error, which requires much time and effort, and since the fine adjustments are performed, the certainty of separation is low.

JP, 2009-219339, A JP, 2012-090467, A JP, 2016-160055, A

  Although the method of using a saw blade or strong wind or the method of lifting is devised to cope with the separation method of aluminum material which is nonmagnetic material, the problem of low reliability of chips and separation at the time of contact of the saw blade There is a point. In addition, in the production line where soft steel plate and aluminum material are mixed and produced, in addition to the magnet type separation device for soft steel plate, it is necessary to provide a separation device for aluminum material, and versatility due to complicated equipment Limitations and expensive equipment. Accordingly, the present invention provides a separation apparatus which can reliably separate an aluminum material which is a nonmagnetic material and which is also applicable to a mild steel plate material.

  The magnetic flux variable separation device according to the present invention has a structure in which a plurality of independent electromagnets are vertically arranged in a line or in a plurality of lines, and currents of the electromagnets of the magnetic flux variable separation device are individually controlled to generate magnetic flux. And adjusting the entire magnetic flux distribution of the variable magnetic flux type separation device.

  In the magnetic flux variable separation device, for the nonmagnetic conductive material, the current of the electromagnet of the magnetic flux variable separation device is individually controlled to increase or decrease the magnetic flux of the electromagnet, and By making the distribution of the magnetic flux of the whole of the variable flux type separation device generated by all the electromagnets into a waveform in the longitudinal direction, and controlling the longitudinal waveform distribution of the magnetic flux to move upward in the time axis, When the magnetic flux variable separation device is used in close contact with the side surface of a laminated nonmagnetic conductive material of a thin plate, the magnetic flux induced in the nonmagnetic conductive material and the magnetic flux variable separation device As an interaction with the magnetic flux of the electromagnet, the upward force generated in the nonmagnetic conductive main material is used to separate the nonmagnetic conductive material, and for the magnetic material, Current of all electromagnets of the variable flux type separation device By keeping the magnetic flux variable separation device in close contact with the side surface of the thin plate magnetic body by keeping the same direction and constant, the magnetic material is magnetized to the same pole, and the repulsive force of the magnetic force between the materials is determined. A control method of the above-mentioned flux variable type separation device for separating materials of a magnetic body by using it is characterized.

  It can be applied to separation of nonmagnetic conductive materials such as aluminum, stainless steel and copper.

  It is applicable also to separation of a magnetic material by making the magnetic flux in this device constant also to magnetic bodies, such as a mild steel plate.

  The present invention can be applied to both nonmagnetic materials and magnetic materials, and the equipment can be simplified.

It is explanatory drawing of the structure and magnetic flux distribution of magnetic flux variable type | mold isolation | separation apparatus. It is an explanatory view of an application example of a magnetic flux variable separation device.

  An Arago disk is known as a basic principle of an induction motor. This is because the movement of the magnet generates an eddy current due to electromagnetic induction in the nonmagnetic metal disk, and the magnetic flux interacts with the magnetic flux of the magnet to rotate the disk. Based on this principle, an induction motor or a linear motor controls the current supplied to the arranged electromagnetic coils to change and move the magnetic flux.

  FIG. 1 is an explanatory view of the structure of the magnetic flux variable type separation device (10) of the present invention and the magnetic flux (13) and its distribution (14). The electromagnets (11) forming the magnetic flux variable separation device (10) are independent of each other, and individually control the current (12) of the individual electromagnets (11) to distribute 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) is not limited, and may be the opposite direction to the figure.

  FIG. 2 shows an application example of the magnetic flux variable separation device (10) to a nonmagnetic conductive material. For a nonmagnetic conductive material such as aluminum, the current (12) of the same electromagnet (11) is controlled to change the magnetic flux (13), and induction in the nonmagnetic conductive material (15) The material is separated by utilizing the upward force generated in the nonmagnetic conductive material (15) as the interaction with the magnetic flux (17) generated by the current (16).

  A control method of the magnetic flux variable separation device (10) for the nonmagnetic conductive material will be described in more detail. Control the current (12) of the electromagnet (11) individually while maintaining the direction of the magnetic flux (13) in the same direction without alternating the polarity of all the electromagnets (11) of the variable flux type separation device (10) Increase or decrease the magnetic flux (13). This increase (decrease) or change in the magnetic flux (13) induces a magnetic flux (17) in the same direction in the nonmagnetic conductive material (15). Furthermore, the current (12) of the electromagnet (11) is individually distributed, and the distribution (14) of the entire magnetic flux (13) generated by all the electromagnets (11) of the variable flux type separation device (10) Control so that the longitudinal waveform distribution (14) of the magnetic flux (13) moves upward on the time axis. Thereby, the conduction of the nonmagnetic material is performed as an interaction acting between the magnetic flux (13) of the magnetic flux variable separation device (10) and the magnetic flux (17) induced in the nonmagnetic conductive material (15). The upward force generated in the body material (15) is used to separate the nonmagnetic conductive material (15).

  The electromagnets of the linear motors (patent documents 1 and 2) make their polarities alternate and utilize the attraction and repulsion of the magnets, but the magnetic flux variable separation device (10) of the present invention comprises all the electromagnets (11 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 without alternating the polarity of) and the current (12) of the electromagnet (11) Adjusting the distribution (14) of the magnetic flux (13) as a waveform throughout the variable magnetic flux separation device (10) and controlling the waveform distribution (14) of the magnetic flux (13) to move upward; Force is an interaction principle of the Arago disk that acts between the magnetic flux (13) of the variable flux separation device (10) and the magnetic flux (17) induced in the nonmagnetic conductor material (15) Use

  In addition to the application to the nonmagnetic material described above, for the magnetic material, keep the current (12) of all the electromagnets (11) of the flux variable type separation device (10) in the same direction and constant. The magnetic material is magnetized to the same pole and separated using the magnetic repulsion between the materials.

  In the conventional material separation apparatus (Patent Document 3), separate material separation apparatuses are required for both the magnetic material and the nonmagnetic material, and the structure of the equipment becomes complicated, which becomes a production restriction such as versatility. It also contributed to the increase in equipment cost. Since the magnetic flux variable separation device (10) of the present invention can cope with both magnetic and nonmagnetic conductors by appropriate control of the current (12) of the electromagnet (11), the equipment is simplified. it can.

  The present invention can be applied to the separation of conductive materials of laminated thin plates, regardless of whether they are magnetic or nonmagnetic.

10 Variable-flux type separation device 11 Electromagnet of variable-flux type separation device 12 Current of electromagnet of variable-flux type separation device 13 Flux of electromagnet of variable-flux type separation device 14 Distribution of magnetic flux of variable-flux type separation device 15 Conductivity of nonmagnetic material Body material 16 Induction current 17 Magnetic flux generated by induction current

Claims (2)

  A magnetic flux characterized by forming a structure in which a plurality of independent electromagnets are vertically arranged in a line or in a plurality of lines, and currents of the electromagnets are individually controlled to adjust the magnetic flux and the magnetic flux distribution. Variable separation device.   In the magnetic flux variable separation device, the electromagnets of the magnetic flux variable separation device are maintained in the same direction of the magnetic flux of all the electromagnets of the magnetic flux variable separation device with respect to a nonmagnetic conductive material. Control the current separately to increase or decrease the magnetic flux, so that the distribution of the entire magnetic flux generated by all the electromagnets of the variable flux type separation device is formed into a waveform in the longitudinal direction, and the longitudinal waveform distribution of the magnetic flux is By controlling the magnetic flux variable type separation device to be in close contact with the side surface of the laminated nonmagnetic conductive material of the thin plate by controlling to move upward in the time axis, it is induced in the same material. As an interaction between the magnetic flux and the magnetic flux of the variable-flux type separation device, the upward force generated in the non-magnetic conductive material is used to separate the non-magnetic conductive material and the magnetic The magnetic flux variable separation device for body material When keeping the current of all electromagnets in the same direction and constant and bringing the magnetic flux variable separation device into close contact with the side of the thin plate magnetic body, the magnetic material is magnetized to the same pole, and the magnetic force between the materials The control method of the above-mentioned magnetic flux variable separation device, characterized in that the material of the magnetic body is separated using the repulsive force of

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