JPS6013891B2 - Alignment storage device for magnetic needle-shaped materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus capable of storing magnetic acicular materials such as needles, nails, or steel fibers mixed into reinforced concrete in a container in close alignment.

When magnetic needle-like materials are stored in a container for transportation or storage, the subordinates are placed randomly or with vibration added, which is effective in keeping them closely aligned and stored in the container. There was no proper equipment. However, since the shape of magnetic needle-like materials is long and thin, they are bulky because they are not aligned when stored, leaving a large amount of space inside the storage container, and the storage weight per unit volume is low, making packaging and transportation costs relatively high. In addition, there were problems such as troublesome work when mixing it into concrete, etc., and damage to the load during transportation. SUMMARY OF THE INVENTION An object of the present invention is to propose an alignment and storage device that can align and densely arrange and store magnetic needles when storing them in a container. In other words, the present invention uses a coil spring to lower a lifting device carrying a storage container for magnetic needle-like materials from above the magnetic field of an electromagnet with different magnetic poles facing each other in the magnetic field according to the weight of the stored needle-like materials. This is an alignment and storage device for magnetic needle-like materials that is configured to be buffered and supported.

This alignment/storage device places magnetic needle-shaped particles in a magnetic field, gives them directionality, and aligns them in a storage container.The storage container is gradually moved into a stronger magnetic field in accordance with the amount of needle-shaped materials introduced from above the magnetic field. The elastic properties of the coil springs are selected so that the top surface of the magnetic needles in the container is always located at the upper end surface of the electromagnet pole. It is possible to align and store a large amount of needle-shaped materials with high density.

Next, the inventive device will be explained based on the drawings.

FIG. 1 is a perspective view showing an example of an alignment device according to the present invention. First, in a magnetic circuit that generates a magnetic field, a pair of electromagnetic coils 22 are wound around opposite ends of an O-shaped yoke 21 across an air gap. A magnetic circuit with opposing pieces can be used.

The elevating device that lowers the storage container 3 for dropping the magnetic needle-shaped material includes, for example, a stopper 1 provided on the bottom of the yoke 21.
Insert the pillars 13 protruding from the bottom of the lifting pedestal 11 made of non-magnetic material into the plurality of vertical holes 15 mentioned in 4. Supporting equipment is available.

The support column 13 is connected to the parking platform 1 via a metal bearing (not shown) or the like.
4, it becomes possible to raise and lower the lifting platform 11 more smoothly. Furthermore, as mentioned above, with the increase in the number of non-magnetic containers 1 such as paper and plastic placed on the lifting pedestal 1, the elastic properties of the coil spring 12 will naturally deteriorate and The upper surface of the electromagnet is always located at the upper end surface of the magnetic pole of the electromagnet.

Located on the parking stand 14 near the bottom of the magnetic pole of the electromagnet,
After the magnetic needle-like materials 1 in the storage container 3 are aligned and stored, the lift pedestal 1
A mitt switch 23 is provided to open the magnetic circuit when 1 falls to the lower limit position. Further, a shoe 2 for dropping the magnetic needle-like material 1 is attached above the lifting platform 11. Here, when considering the attractive force of the magnetic field, it is known that the strength of the magnetic field decreases as the distance between the upper and lower ends of the magnetic pole piece is farthest from the upper end of the magnetic pole piece. Therefore, in the device configured as described above, the storage container 3 is located above the magnetic pole piece at the initial stage when the magnetic needle-like material is introduced, and the magnetic needle-like material to be introduced is They fall onto the bottom surface of the storage container 3 under their own weight without being dragged, and are aligned by the above-mentioned suction force.

Also, as the weight inside the storage container 3 increases, the coil spring turtle 2 is compressed, and the magnetic needle-shaped material inside the storage container 3 is compressed. Since the upper surface is always located at the upper end surface of the magnetic pole of the electromagnet and gradually descends in a strong magnetic field, the magnetic needle-shaped materials 1 are sequentially aligned and deposited in the storage container. After the needle-like material tortoises initially introduced are aligned at the bottom of the needle-like material storage container 3, the storage container 3 is gradually lowered into a strong and constant magnetic field.

As a result, the needle-shaped materials i being put into the container are not magnetized all at once, but are magnetized in the order in which they are immersed, starting from the bottom of the container, and are stored in an aligned manner. They are stored densely in one direction. When the needle-shaped village 1 is put into the storage container 3 and the storage capacity is reached, the lifting platform 1 descends to the bonito-stopping platform wing 4. The magnetic field disappears and the storage container 3 can be easily taken out.

Further, the storage container 3 can also be taken out using a hydraulic cylinder (not shown) that raises the lifting platform 11 in conjunction with the limit switch 23. Of course, the lifting device can be not only one using a coil spring, but also a hydraulic, pneumatic cylinder, or a screw mechanism. A device in which the lifting platform 11 is suspended from above using a coil spring or the like will have the same effect.

Next, embodiments of the present invention will be described in detail. Made of 9 steel fibers with a thickness of 0.25 mm, width of 1 side, length of 25 mm, and weight of 30 mm, the internal dimensions are 44 mm long, 210 mm wide,
It was placed in a cardboard container at a height of 175. Using a device with the same configuration as the one described above, with a magnetic pole piece of 54 pieces x 14 ratio, magnetizing force of 30 kAT, and an average magnetic gradient of 20 K perpendicular to the magnetic field, a magnetic circuit with a maximum magnetic field strength of 200 was used. As a result of introducing the steel fiber at a rate of approximately 4k9'min, the specific gravity inside the container was 2k9'min, which improved the storage rate by 20% compared to the conventional method of injecting steel fiber randomly. When storing magnetic needles in a storage container, the magnetic needles can be automatically and easily aligned and stored in a certain direction, which improves the storage rate per customer, making it easier to pack and store them. This has the effect of ensuring a reduction in transportation costs and further reducing the damage caused by packaging during transportation.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an example of the device of the present invention. In the figure, 1... Magnetic needle-like material, 2... Shooter, 3...
・Storage container, 11... Lifting pedestal, 12... Coil spring
13... Strut, 14... Parking stand 15... Vertical hole, 21...Yoke, 22...Electromagnetic coil. Figure 1

Claims (1)

[Claims] 1. A magnetic circuit in which the different magnetic poles of a pair of electromagnets are opposed to each other in parallel with an air gap, and the other magnetic type is connected with a yoke, and a non-magnetic container for storing magnetic needles in alignment are placed inside the air gap. It consists of a non-magnetic lifting pedestal with a pillar fitted with a coil spring protruding from the bottom in order to buffer and support it so that it can be raised and lowered in the direction perpendicular to the magnetic field, and a parking pedestal having a vertical hole into which the pillar is inserted, An elevating device placed on the bottom of the yoke of the magnetic circuit and a non-magnetic elevating pedestal located near the bottom of the magnetic pole of the electromagnet that cushions and supports the non-magnetic container are interlocked with the elevating and lowering of the magnetic material. and a limit switch that cuts off the power to the electromagnet after the needle-like materials are aligned and stored, and the coil spring is compressed by the weight of the magnetic needle-like materials that are continuously thrown into the non-magnetic container, and the non-magnetic material 1. A device for arranging and storing magnetic needles, characterized in that the apparatus has an elastic property that allows a non-magnetic container to be lowered so that the top surface of the magnetic needles in the container is always located at the upper end surface of the magnetic pole.