JPH07101650B2 - Method and apparatus for magnetizing flexible plastic composite linear magnetic material for magnetic therapy - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for magnetizing a linear magnetic body that is magnetized so that the magnetism of the magnetic poles alternates with respect to the axial direction for each minute dimension, and a method thereof. The present invention relates to a magnetizing device, and particularly, it performs magnetizing suitable when a linear magnetic body is a flexible plastic composite material for magnetic therapy.

[Prior Art] Conventionally, a magnetic therapy device using a permanent magnet is known for the purpose of promoting blood circulation, relieving a hypertonic state of muscles, and reducing a muscle pain or a muscle induration state (stiffness). . For example, magnetic belly roll (Jitsuko Sho-39-26259 publication), magnetic supporter (Jitsukoku Sho-50-55791 publication), magnetic futon (Jitsuko Sho-55-44534 publication), magnetic mattress (Jitsukai Sho-56-88268 publication) Etc. have been proposed.

In the permanent magnetic therapy device, a plurality of granular or block-shaped permanent magnets are attached to a mattress or the like at intervals of, for example, 10 mm to 30 cm to secure the magnetic field. The magnetic flux density of 10 drops more than 1/10 of the maximum magnetic flux density on the surface when it is more than 10 cm away from the surface.Therefore, the point-like magnetic field is actually distributed on the surface of the mattress at a predetermined interval. However, it cannot be said that a sufficient magnetic field is secured. Therefore, a linear magnetic member capable of forming a wide magnetic field in a planar shape has been desired.

Therefore, the inventor of the present invention forms a linear or planar magnetic field by weaving a linear flexible plastic composite magnet containing barium ferrite and chlorinated polyethylene as a main component and having a surface density of 800 gauss or more into a fiber cloth body or the like. A magnetic therapy device is proposed (Japanese Utility Model Publication No. 61-91241).

[Problems to be Solved by the Invention] By the way, in a linear magnet used in, for example, a magnetic therapy device, it is desirable that the surface magnetic flux density is 1000 gauss or more and the distribution of the magnetic field is relatively uniform. However, the above publication only describes the magnitude of the surface magnetic flux density of the linear flexible plastic composite magnet, and it is clear about the distribution and direction of the magnetized magnetic poles, as well as the magnetizing method and magnetizing device. It hasn't been.

The present invention has been made in view of the above problems, and provides a magnetizing method and a magnetizing device for alternately inverting and magnetizing magnetic poles at every minute interval with respect to the axial direction of a linear magnetic body. With the goal.

[Means for Solving the Problems] In order to solve the above problems, the present invention is configured such that a plurality of flexible plastic composite linear magnetic bodies are configured so that the polarities of the pole pieces are alternately inverted for each minute dimension l. The magnetic field is instantaneously generated in each pole piece every time the linear magnetic body is pulled by the length of the magnetic pole portion while being drawn in the axial direction at a constant low speed along the magnetic pole portion surface. did.

Further, the present invention, the plastic composite linear magnetic body extruded at a constant low speed is cooled and solidified through a cooling device, and the flexible plastic composite linear magnetic body thus cooled and solidified has a polarity of a pole piece. Each time the linear magnetic body is pulled by the length of the magnetic pole portion while being axially pulled at the constant speed along the magnetic pole portion surfaces that are formed so as to be alternately inverted for each minute dimension l. A magnetic field is instantaneously generated in each magnetic pole piece.

Further, according to the present invention, there is provided a substrate made of a magnetic material in which a plurality of slots are formed at intervals of a minute dimension 1 in one direction on the surface thereof, and a conductor wire embedded in the slots in a wave shape while being folded back at its terminal end. A magnetic part, a DC power source connected to both ends of the conductor wire, a take-off means for taking the flexible plastic composite linear magnetic body at a constant low speed, and the linear magnetic body is the length of the magnetized part. And a detecting means for detecting that the power is taken in by an amount, and the electric current is instantaneously discharged from the power source every time the detecting means detects the taking of the length.

[Operation] In the flexible plastic composite linear magnetic body for magnetic therapy, the polarity of the magnetic pole piece is reversed every minute dimension l (L) of the order of millimeters. At a constant low speed of about a meter, it can be taken without tearing. Then, every time the linear magnetic body is taken out by the length of the magnetic pole portion, a magnetic field is instantaneously generated in each magnetic pole piece so that the required coercive force is obtained, for example, for several milliseconds. Further, despite the generation of the coercive force, the magnetic body is linear and the contact surface with the magnetic pole portion is extremely small, so that the smooth take-up operation is performed without breaking.
After that, when the linear magnetic body is taken out by the length of the magnetic pole portion, the non-magnetized portion following the linear magnetic body is reversed in the axial direction at every minute dimension l so that the polarity of the magnetic pole is reversed at once for each length of the magnetic pole portion. Is magnetized. Particularly, in the case where the linear magnetic body is continuously drawn, there is almost no movement within the magnetic field generation time, so there is no effect on the magnetic flux density of the magnetized magnetic pole.

Further, the linear magnetic body is extruded at a constant low speed, then cooled and solidified through a cooling device, and subsequently, when the linear magnetic body is taken out at the constant speed by the length of the magnetic pole portion, The subsequent unmagnetized portion is magnetized at a time for each length of the magnetic pole portion so that the polarity of the magnetic pole is reversed in the axial direction for each minute dimension l.

Further, the power source is momentarily discharged, for example, for several milliseconds each time it is detected that the linear magnetic body that is drawn in the axial direction along the magnetized part surface is taken out by the size of the magnetized part.
Magnetization is performed once for each length of the magnetized portion so that the polarity of the magnetic pole is reversed at intervals of a minute dimension l. The DC power supply instantaneously discharges a current required to generate a magnetic field in which the linear magnetic body has a required coercive force.

[Embodiment] FIG. 1 is a diagram showing a manufacturing process of a flexible plastic composite linear magnetic body for magnetic therapy using a magnetizing device according to the present invention.

The flexible plastic composite linear magnet for magnetic therapy is manufactured as follows. That is, the linear magnetic material extruded at a low speed of, for example, 2 m per minute from the extrusion molding machine S ₁ is cooled and solidified by the cooling device S ₂ while being drawn by the drawing machine S ₃ , and wound on the winding machine S ₄ . Taken. Next, the wound-up linear magnetic body is magnetized by the magnetizing device S ₅ so that the polarities of the magnetic poles are reversed at every predetermined small dimension l (L) in the axial direction, and then the take-up machine S 5 It is taken up by ₆ and taken up by the winder S ₇ .

FIG. 2 is a perspective view showing an example of the magnetizing device S ₅ . FIG. 3 is a plan view of the magnetizing device S ₅ . In FIG. 2, the magnetic pole portion 2 of the magnetizing yoke is constructed as follows. That is, a slot 1a having a groove width 12 (see FIG. 4) cut in a direction perpendicular to the longitudinal direction is formed in the longitudinal direction on the surface of a flat plate-shaped base 1 made of a magnetic material, preferably a ferromagnetic material such as iron. An appropriate number is formed at intervals l1 (see FIG. 4). Further, in the slot 1a, a conductor wire 3 made of copper or the like and having a diameter substantially equal to the groove width l2 is corrugated by being folded back at the end of each slot 1a as shown in FIG. It is embedded, and a direct-current exciting current is supplied to both ends of the conductor plate 3 from a capacitor-type magnetizing power source 5. The conductor wire 3 is not limited to one, and a plurality of conductor wires 3 may be bundled and embedded.

The capacitor-type magnetizing power supply 5 discharges the electric charge accumulated in the large-capacity capacitor through the conductor wire 3
A large exciting current is instantaneously supplied.

In the above configuration, when an exciting current is supplied to the conductor wire 3, N and S magnetic poles are formed on each magnetic pole piece 1b as shown in FIG. 4, and the magnetic pole portion 2 has a minute constant size l (= l1 + l2). ), A magnetic pole whose polarity is reversed is formed. For example, l1 = 1.5m
When m, l2 = 2.5 mm and the maximum current and an exciting current of 10000 amperes are applied to the conductor wire 3, approximately 10000 is applied to the pole piece 1b.
The magnetic poles having a Gaussian magnetic flux density are formed so as to be alternately inverted with a short dimension of 4.0 mm pitch.

The linear magnetic body 4 is magnetized as follows using the above magnetizing device. That is, the linear magnetic body 4 is placed on the magnetizing yoke A in that direction, and a current is passed through the conductor wire 3. Conductor wire 3
When a current flows to the magnetic pole part 2 as described above, N,
The magnetic poles of S are alternately generated for each minute dimension l. Then, by the magnetic field generated in the magnetic pole portion 2, the magnetic pole portion 2 of the linear magnetic body 4 is
The magnetic field is applied to the portion placed on the magnetic pole so that the magnetic poles are reversed at the constant dimension l with respect to the axial direction. In the example of 10,000 Gauss, a coercive force of 1000 Oersted or more can be obtained. When the magnetization is completed, the magnetized portion of the linear magnetic body 4 is detected by a take-up amount detector or a magnetic detector (not shown) which will be described later, and is wound by the winder S ₇ , and the unmagnetized portion that follows is magnetized. It is placed on the part 2 and magnetized by the same operation as described above. Hereinafter, the linear magnetic body 4 is sequentially magnetized repeatedly for each length of the magnetic pole portion 2.

FIG. 5 is a diagram showing the magnetic poles and magnetic field distribution of a linear permanent magnet obtained by magnetizing a linear magnetic body having a circular cross section by the above method. In the same figure, a small magnet having a constant axial dimension l is formed in which an N pole magnetic pole is formed on one side (upper side or lower side in the figure) of the surface and an S pole is formed on the other side half surface in the axial direction. When they are considered to be lined up, the magnetic poles of the linear permanent magnets are continuously formed so as to be opposite to the magnetism of other adjacent minute magnets. Therefore, a magnetic field H _T perpendicular to the axial direction from the upper N pole to the lower S pole is formed, and between the minute magnets and the adjacent minute magnets,
An axial magnetic field H _E is formed in the upper part and the lower part, respectively, and as a whole, the magnetic field H _{T in the} orthogonal direction and the magnetic field H _{E in the} axial direction in which the direction of the magnetic field is reversed in the axial direction for each dimension l are continuous. Formed. Even if the linear permanent magnet with such a magnetic field is twisted to some extent, the magnetic field formed in the vicinity of the outer surface of the linear permanent magnet is held relatively uniformly, so when used in a futon as a magnetic therapy device, for example, A good linear magnetic field can be formed, and the effect of magnetic treatment is further enhanced.

The above magnetizing method and magnetizing apparatus can be applied to a linear magnetic body having an elliptical cross section.

In the above embodiment, the winding operation of the winder S ₇ was intermittent,
It is also possible to continuously magnetize while winding. That is, assuming that the linear magnetic body is magnetized at 6 m / min, for example, when the charging time is about 5 seconds and the discharge time is about 2 milliseconds, the capacitor-type magnetizing power supply device 5 is used within the charging time. The moving distance of the linear magnetic body is 50 cm, and the moving distance of the linear magnetic body is 0.2 mm within the above discharge time. Therefore, the magnetic flux density of the magnetic pole magnetized by the movement within the above discharge time is given. The impact is almost negligible, so
If the size of one magnetization is 50 cm or more, the linear magnetic body can be continuously magnetized while being wound by the winder S ₇ .
In this case, a take-up amount detector is provided in the take-up machine S ₆ , and an exciting current is supplied from the magnetizing power source 5 to the conductor wire 3 every time the linear body is taken out for a predetermined length (for the length of the magnetizing portion 2). The magnetic pole part 2
A magnetic field is generated in each magnetic pole piece 1b. Alternatively,
A magnetism detector is provided on the magnetizing yoke A to monitor the number of magnetic poles of the magnetized linear magnetic body, and when a predetermined number of magnetic poles is counted, an exciting current is supplied from the magnetizing power source 5 to the conductor wire 3. You may

[Effects of the Invention] As described above, in the method for magnetizing the flexible plastic composite linear magnetic material for magnetic therapy according to the present invention, since the linear magnetic material is linear, it resists the magnetic attraction force. Since the magnetic field is instantaneously generated every time the magnetic pole portion is taken out at a low speed, and the magnetic field is alternately inverted for every minute dimension l, it is necessary. The magnetizing work for generating the coercive force can be efficiently and promptly performed as a whole, and the polarity deviation and the overlapping at the time of magnetizing do not occur.

Furthermore, by performing the magnetizing work of the linear magnetic material in conjunction with the extrusion molding process, it is not necessary to temporarily store the extruded product and secure a place, and transfer from storage to the magnetizing process. Since there is no need for such work, there is an advantage that the magnetizing work as a whole can be made efficient and speedy.

Further, a magnetized portion composed of a base made of a magnetic material in which a plurality of slots are formed at intervals of a minute dimension 1 in one direction on the surface thereof, and a conductor wire embedded in a wavy shape while being folded back at the end portion of the slot, A power source connected to both ends of the conductor wire, a take-up means for taking the flexible plastic composite linear magnetic body at a constant low speed, and the linear magnetic body for the length of the magnetized portion. And a current required to generate a magnetic field such that the linear magnetic body has a required coercive force from the power source each time the detection means detects the pulling of the length. Since it is configured to discharge instantaneously, the magnetizing work to generate the required coercive force can be performed efficiently and quickly, and despite the generation of this coercive force, the magnetic substance is linearly removed. Enable and collect By performing the detection, it is possible to provide a magnetizing apparatus polar shift and never occur duplicate such magnetic therapeutic flexibility plastic composite linear magnetic body during magnetization.

[Brief description of drawings]

FIG. 1 is a diagram showing a manufacturing process of a flexible plastic composite linear magnetic body for magnetic therapy according to the present invention using a magnetizing device, and FIG.
FIG. 3 is a perspective view of the magnetizing device according to the present invention, FIG. 3 is a plan view of the magnetizing device, FIG. 4 is a side sectional view of the magnetizing device, and FIG.
The figure is a distribution diagram of magnetic poles and magnetic fields of a flexible plastic composite linear magnet for magnetic therapy magnetized by the magnetizing device according to the present invention. 1 ... Board, 1a ... Slot, 1b ... Magnetic pole piece, 21 ... Magnetic pole part, 3 ... Conductor wire, 4 ... Linear magnetic material, 5 ... Magnetizing power supply

Claims (3)

[Claims] 1. A flexible plastic composite linear magnetic body is axially moved at a constant low speed along a plurality of magnetic pole face surfaces configured so that the polarities of the magnetic pole pieces are alternately inverted for each minute dimension l. A flexible plastic composite linear magnetic material for magnetic treatment, characterized in that a magnetic field is instantaneously generated in each magnetic pole piece every time the linear magnetic material is taken out by the length of the magnetic pole portion while being taken out. Porcelain method. 2. A plastic composite linear magnetic material extruded at a constant low speed is cooled and solidified through a cooling device, and this cooled and solidified flexible plastic composite linear magnetic material has a small pole piece polarity. Each time the linear magnetic body is pulled by the length of the magnetic pole portion while being axially pulled at the constant speed along the magnetic pole portion surfaces that are configured to be alternately inverted for each dimension l. A method for magnetizing a flexible plastic composite linear magnetic material for magnetic therapy, which comprises instantaneously generating a magnetic field on a pole piece. 3. A magnetization comprising a base made of a magnetic material in which a plurality of slots are formed at intervals of a minute dimension 1 in one direction on the surface thereof, and a conductor wire embedded in the slots in a wave shape while being folded back at its end portion. Portion, a DC power source connected to both ends of the conductor wire, a take-up means for taking the flexible plastic composite linear magnetic body at a constant low speed, and the linear magnetic body is the length of the magnetized portion. A magnetic treatment, characterized in that it is provided with a detecting means for detecting that the electric power has been taken out, and the electric current is instantaneously discharged from the power source every time the detecting means detects the taking-out of the length. For magnetizing flexible plastic composite linear magnetic material.