JPS6010981Y2 - Magnetic levitation device for adsorption separation of sheet materials - Google Patents

Description

[Detailed description of the invention] This invention is a method of suctioning a large number of sheet materials piled up (hereinafter referred to as a stack) one by one, starting from the top layer, for the purpose of carrying out. The present invention relates to a magnetic levitation device used in adsorption separation of sheet materials, which is used to separate sheet materials by magnetic force.

Magnetic levitation devices for this type of adsorption separation of sheet materials are already known.

For example, as shown in FIG. 1, a stack 3 is placed on a table 2 that can be raised and lowered by a table lifter 1, and a vacuum suction lifting device 4 is lowered from an upper position to remove the top sheet material. The sheet material is suctioned and lifted upward, and the vacuum suction elevating device 4 is moved to sequentially convey the sheet material to a sheet feeder or the like.

In this way, only the top sheet material must be peeled off and transported, but in this case, when the top sheet material is lifted, the next sheet material is lifted all at once. There are many.

Therefore, conventionally, a magnetic levitation device 5 for attracting and separating sheet materials has been disposed on the end face of the stack 3 so that each sheet material can be easily separated by magnetic force.

The magnetic levitation device 5 includes a magnet portion 5a that directly contacts the end surface of the stack 3, and a cylinder device 5b for reciprocating the magnet portion 5a as required.

However, in the conventional magnetic levitation device for adsorption and separation of sheet materials, the magnet portion 5a and the piston rod of the fluid pressure cylinder device 5b are fixed, so that the end face of the stack 3 and the front surface of the magnet portion 5a are fixed. There were cases where the two did not come into close contact with each other.

If the sheet material is rectangular, the magnet part 5a will come into close contact with the end face of the stack 3 relatively easily, but if the sheet material is in a shape other than rectangle (hereinafter referred to as irregular shape), the magnet part 5a will come into close contact with the end face of the stack 3 relatively easily. There was a drawback that the front surface of 5a did not come into close contact with the stack 3, and as a result, the peeling performance was significantly reduced.

Therefore, such irregularly shaped sheet materials must be peeled off one by one by the operator directly, which has the drawback of significantly reducing efficiency.

The present invention solves the drawbacks of the prior art as described above, and it is possible to adsorb sheet materials that are not only rectangular but also irregularly shaped and can be brought into close contact with the end face of the stack to obtain the necessary peeling performance. It provides a magnetic levitation device in separation.

Embodiments of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIGS. 2 and 3, a bracket 13a attached to the tip of the piston rod 13 of the cylinder device 12 is rotatably connected to the magnet portion 11 by a pin 14.

In addition, both sides of the base of the magnet part 11 and the bracket 1
A counterbalancing spring means, in this example a pair of springs 15 and 16, is mounted between the spring 3a and the spring 3a.

Due to the action of these springs 15, 16, the magnet part 11 is normally in a neutral position with respect to the piston rod 13.

However, when the piston rod 13 moves forward and, for example, only one side portion of the magnet portion 11 indicated by the symbol P contacts a part of the stack 3, the spring 15. rotates against the action of

A cover 1 as a guide member is provided on the front side of the magnet part 11.
7 is a provision.

This cover 17 is preferably made of non-magnetic stainless steel or the like in order to prevent the adhesion of iron powder or the like.

Further, as shown in FIG. 3, a guide bar 18 is provided parallel to the piston rod 13, and a member 19 having a guide hole 19a for guiding the guide bar is provided on the side of the cylinder 12.

4 and 5 show a modification of the invention.

A magnet portion 22 is connected to the piston rod of the cylinder device 20 via a bracket 21.

That is, this magnet part 22 is arranged so as to be rotatable with respect to the bracket 21 via a pin 23.

Further, a cover 24 made of a non-magnetic material, for example stainless steel, is arranged on the front surface of the magnet part 22.

Since the cover 24 is arranged wider in the front, back, left and right than the width of the magnetic steel 22a provided in the magnet part 22, it not only facilitates rotation of the magnet part but also functions as a protection member for the magnet part. Since the gap 25 is provided in the middle, weakening of the magnetic force can be prevented.

FIG. 6 shows a practical example of the device of the present invention.

In this usage example, the front surface of the magnet portion is configured to come into contact with the end surface of the stack from the direction along the traveling direction P of the stack 3.

That is, when the handle 31 is turned, the power is transmitted to one end of the arm 33 via a gear mechanism within the gear box 32.

Although not shown in the figure, a locking means for stopping and fixing the rotation of the arm when the arm 33 rotates around the support 34 to a predetermined position is provided at a predetermined position on the support 34 or the arm. It is arranged in.

A fluid pressure cylinder 35 is fixed to the tip of the arm 33.

A magnet portion 36 is disposed at the tip of the piston rod of this cylinder 35.

A cover 37 made of a non-magnetic material is provided on the front surface of the magnet section 36 to protect the magnetic steel.

This cover 37 is also formed with a gap 22a extending in the vertical direction shown in FIG. 5 to protect the magnetic steel when the magnet section rotates and to prevent weakening of the magnetic force.

In use, first turn the handle 31 by hand to bring the arm 33 close to the end surface of the sheet material 3, and when a predetermined distance is reached, the rotation of the arm 33 is locked by the locking means.

Thereafter, the cylinder device 35 is operated to bring the cover 37 on the front side of the magnet section 36 into contact with the end surface of the stack 3.

FIG. 7 shows another example of the use of the device of the present invention.

In this example, the stack 3 has a rectangular configuration.

The device of the present invention is arranged on one side of the stack 3 in the conveying direction, and the straightening device 30 is arranged on the other side.

The straightening device 30 is configured to straighten one end surface of the stack 3 to a predetermined state by reciprocating a pressing member 31 over a predetermined width using a cylinder device 32.

When the stack 3 is conveyed to a predetermined position as shown by the arrow Q, the pressing member 31 of the straightening device 30 is advanced by a predetermined amount to restrict one end surface of the stack 3, and as shown in FIGS. 1 to 5. Magnet part 11 of the device of the present invention
Or 22 is brought into contact with the other end surface of the stack 3.

At the same time, a device of the type shown in FIG. 6 is brought into contact with the stack 3 from both end faces.

That is, by rotating the arm 33, the cover 37, which is attached to the front surface of the magnet section 36 disposed at the tip thereof, is brought into contact with the end surface of the stack 3 from both sides.

In this way, the stack 3 is corrected to a predetermined position and is given removability by the magnetic force of the magnet portions 11 or 22 and 36.

The sheet materials 33 that are in a state where they can be easily peeled off are successively lifted from the top one by a vacuum suction lifting device equipped with a suction cup (not shown) and conveyed to the next stage in the same manner as in the prior art.

FIG. 8 shows yet another example of use of the device of the present invention.

In this example, the sheet material has an irregular shape.

Therefore, the magnet portion 11 or 22 shown in FIGS. 2 to 5 rotates when it comes into close contact with the end surface of the stack 3.

In addition, in the magnetic levitation device for adsorption and separation of sheet materials of the type shown in FIG. 6, the magnet part 36 on the left side in the figure is in close contact with the end surface of the stack 3 in a state substantially similar to that in FIG. However, the magnet part 36 on the right side in the figure is brought into close contact with the end surface of the stack 3 in a relatively largely rotated state as shown in the figure.

In the case of such irregularly shaped sheet materials, when using a magnetic levitation device for conventional sheet material adsorption separation, the magnet part does not come in close contact with the end face of the stack 3, making it difficult to ensure peelability. However, when the product of the present invention is used, as illustrated in FIG. 8, all the magnet parts are brought into close contact with the end faces of the stack 3, so that effective peelability can be obtained.

As described above, the magnetic levitation device for sheet material according to the present invention is configured such that the magnet part can be reciprocated within a predetermined stroke range by a fluid pressure cylinder, and the end of the piston rod of the fluid pressure cylinder and the magnet part are connected. Since the connection is rotatable and the magnet part is configured in a swinging manner, the sheet material can be brought into close contact with the end face of the appropriate stack not only for rectangular shapes but also for any other irregular shapes.

Therefore, the magnetic levitation device can be universally applied to many types of sheet materials, and the remarkable effect of being able to effectively separate the sheet materials from each other can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing how a magnetic levitation device is used in the conventional adsorption separation of sheet materials, and Fig. 2 is a schematic plan view showing an example of the magnetic levitation device in the adsorption separation of sheet materials according to the present invention. , Fig. 3 shows the A-A of the magnetic levitation device shown in Fig. 2.
4 is a schematic vertical sectional view showing another modification of the present invention; FIG. 5 is a view of the magnetic levitation device shown in FIG. 4 as viewed from the X direction; and FIG. The figure is a perspective view showing an example of the use of the magnetic levitation device of the present invention, FIG. 7 is a schematic plan view showing the use of the magnetic levitation device of the present invention, and FIG. 8 is another example of the use of the magnetic levitation device of the present invention. FIG. 2 is a schematic plan view showing an example. 10... Magnetic levitation device for adsorption and separation of sheet materials, 11... Magnet section, 12...
・Fluid pressure cylinder, 20...Fluid pressure cylinder,
22... Magnet part, 33... Arm, 35... Fluid pressure cylinder, 36...
・Magnet part.

Claims (1)

[Claims for Utility Model Registration] 1. A cover is attached to a magnet section, the magnet section is rotatably attached to a piston rod of a fluid pressure cylinder, and a balancing spring means is provided between the piston rod and the magnet section. A magnetic levitation device for adsorption separation of sheet materials, characterized by: 2. A magnetic levitation device for adsorption and separation of sheet materials according to claim 1, wherein the springing means is two springs.