JPS62280143A - Laminated steel sheet vibrating separation device - Google Patents

Abstract

PURPOSE:To separate laminated steel sheets securely, by assembling an electromagnet in an automatic steel sheet taking-out device and exiting, boring and moving its magnetic field frequently and quickly for vibrating the steel sheets brought into close contact violently and making the shock of the vibration a change for the steel sheets to react each other to be separated. CONSTITUTION:An electromagnet M is accommodated and fixed in a casing 6 with its both magnetic pole surface 10, 11, positioned in the vicinity of the wall surface of the casing 6. The electromagnets M are mounted on brackets 3 at the both sides of a support table 4 of a pushing-up mechanism of an automatic steel sheet taking-out device T in a confronting relation with laminated steel sheets 9 located between them. The automatic steel sheet taking-out device T has a transportation arm 5 above it and a pushing-up piston 2 is regulated in such a manner that a level of the laminated steel sheet is kept at a height for permitting the arm 5 to clamp the uppermost steel sheet only and a few of the laminated steel sheets 9 at the upper portion are sequential ly pushed up between vibrating separation devices b. An automatic switch for turning on and off a current to be supplied quickly or power supply circuit 1 for frequently switching over the direction of the current is connected to a coil at the outer circumfer ence of the body of an iron core 8 forming the electromagnet M through a variable resistor.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a laminated steel plate separating device, and more specifically, it vibrates the upper parts of a large number of stacked laminated steel plates that are in close contact with each other. The present invention also relates to a vibration isolating device for laminated control plates that uses a magnet to reliably separate the plates one by one.

(Conventional technology) In recent years, with the remarkable progress in steelmaking technology and rolling equipment, steels have been developed with various types of excellent resistance, making them suitable for press forming under harsh conditions.

Thin steel plates have been developed one after another and are being offered to the market.
Its uses have expanded to a wide variety of fields, from single frame parts for automobiles and home appliances, to uniforms for kitchens, baths, and other furniture, and are pressed at the start of each production line.

Alternatively, it is molded as a base using a roller or the like.

When forming these, the required plate thickness 2
A large number of laminated steel plates having the same dimensions and stacked closely together are suspended from above by a carry-out arm, automatically taken out one by one from above, and sequentially placed on the forming table of a forming machine for supply. There was a malfunction in which two or more of the laminated steel plates in close contact with each other were taken out, placed on a molding table, and then molded as they were. For this purpose, recently, the laminated steel plate is placed horizontally on a push-up mechanism that pushes it horizontally upward, and a permanent magnet is disposed on the upper side of the laminated steel plate, and the permanent magnet moves the upper part of the laminated steel plate. A plurality of steel plates are attracted and magnetized, and each steel plate is separated by the repulsive force between rotating magnetic poles of the magnetic force generated in each steel plate. The steel plates are lifted one by one from above by a carry-out arm and taken out. At the same time, the stacked N steel plates are lifted horizontally upward by the above-mentioned lifting mechanism. An automatic steel plate take-out device has been developed that allows the upper part of the steel plate to be pushed up to the side of the magnet at all times, and is now widely used.

(Problem to be Solved by the Invention) However, in the conventional automatic steel plate take-out device, the permanent magnets for separating a large number of stacked steel plates one by one are simply placed close to the upper sides of the laminated steel plates. Therefore, the magnetic field of a permanent magnet in a stationary state is fixed. Therefore, the magnetic force of the upper plurality of steel plates each magnetized by the magnetic field of the magnet and the repulsive separation force between the steel plates due to the repulsion between the same magnetic poles are stable static forces without any change. In addition, if the laminated steel plates are in close contact with each other due to rust preventive oil remaining on the surface of each steel plate, or if they are intertwined with each other at the periphery due to pars etc. that occur when cutting the steel plates, the magnet will There is still a problem in that the steel plates cannot be reliably separated one by one only by the static repulsive force between the rotating magnetic poles of each magnetized steel plate.

Furthermore, when there is a change in the two dimensions of the steel plate thickness, there are complex problems such as searching for a magnet with suitable strength each time and then replacing the previously used magnet.

The present invention has been made in view of the above circumstances, and its purpose is to solve the above problems, and to easily adapt to changes in the thickness of a steel plate by simply varying the magnetic field.
Another object of the present invention is to provide a laminated @slope vibration isolating device that can reliably separate steel plates that are brought into close contact one by one.

(Means for Solving the Problems) As a means for achieving the above object, the vibration isolating device for laminated steel plates according to the present invention has a push-up mechanism for moving the stacked N steel plates horizontally upward, and the above-mentioned In an apparatus in which a magnet is disposed close to the upper side of a stack of steel plates, the steel plates are suspended from above by a transfer arm, and the steel plates are automatically taken out one by one from above, using an electromagnet as the magnet. The input current can be switched between "on" and "off", or the polarity can be changed by separating the upper layers of the laminated steel plates one by one using vibration and magnetic force, and the current is optimized according to the two dimensions of the steel plate thickness. The structure is such that it is adjustable.

(Function) According to the above configuration, the present invention allows the input terminal of the electromagnet disposed close to the upper side of the laminated steel plate to be "input".
When this happens, a magnetic field is generated between the two poles of the electromagnet, and the upper parts of the laminated steel plates on the sides of the electromagnet are magnetized and magnetized, and the repulsive force between the same magnetic poles causes each steel plate to become an electromagnet. Separate the sides and levitate.

Next, when the input terminal of the electromagnet is turned off, the magnetic field disappears, and the individually levitating steel plates descend and approach their original laminated form, but the remaining magnetism causes them to stick together. It doesn't reach that point. Then, the above input current is turned on,
If the "off" operation is repeated rapidly and alternately, the multiple steel plates will be vibrated up and down, and the steel plates that are in close contact with each other or intertwined with each other due to oil on the surface of the steel plates or pars on the periphery of the steel plates, etc. The steel plates are dynamically peeled off and floated, and the uppermost steel plate, which vibrates with a particularly large amplitude, is reliably separated into only one piece.

In addition, even when the input direction of the input current of the electromagnet is alternately changed and the polarity is changed frequently, the residual magnetism of each steel plate can be erased and changed at once, and each steel plate is attracted to the attraction surface of the magnet each time. It attacks later, repeats this process, vibrates, and is separated.

Furthermore, adaptation to changes in one dimension of the thickness of the steel plate can be made by simply adjusting the strength of the input current to the electromagnet, and the above-mentioned technical problem can be solved.

(Example) Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 1 is a plan view showing an embodiment of a vibration isolation device according to the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. FIG. 3 is a plan view of an automatic steel plate take-out device to which the present invention is applied, and FIG. 4 is a circuit diagram of the present invention.

In Figures 1 to 4, (M) is a tm stone for adsorbing a part of the steel plate, and the drawing shows a coil (7) wound around the outer circumference of the body of the U-shaped iron core (8). We show an example where αφ,
αυ is M! which is opposite to N or S depending on the input direction of the coil (7). This is a magnetic pole surface that can become a pole.

The electromagnet (M) is housed and fixed in the casing (6) with both magnetic pole faces QOI and αυ close to the wall surface of the casing (6), and is used in the automatic steel plate take-out device (T) as in the case of conventional magnets. As shown in FIG. 3, they are placed on brackets (3) on both sides of the pedestal (4) of the push-up mechanism with laminated steel plates (9) interposed therebetween.

In this case, the electromagnet (old magnetic pole faces Oe, αB) are connected to the laminated steel plate (9) through the casing (6) wall, respectively.
It is more preferable that U7 be disposed symmetrically and close to the center line of the upper side of U7.

The automatic steel plate take-out device (T) has a transport arm (5) above it that can move the steel plate by suspending it vertically and laterally, and places laminated steel plates (9)... The push-up piston (2) that pushes upwards is connected to the transfer arm (
5) clamps only the topmost steel plate, keeping the level at a constant height and pushing up the upper parts of the laminated steel plates (9) one after another between the vibration isolation devices (B) and (B). has been adjusted to.

In addition, FIGS. 3 and 4 show a vibration isolating device according to the present invention (
Although an example is shown in which two pieces of B) are placed relative to each other on both sides of the upper part of the laminated steel plate (9)..., the number of pieces B) is not particularly limited to two; Plate thickness.

It is optional to arrange one to more than one in consideration of changes in dimensions, or to arrange multiple pieces in response to changes in the steel plate (9), enter the necessary aI & as appropriate, and install it independently. , or those disposed opposite to each other may be operated simultaneously or alternately.

As shown in the circuit diagram in Figure 4, a coil (7) wound around the outer circumference of the body of a U-shaped iron core (8) forming an electromagnet (gate) has a variable coil (7) that controls the input current. The current flame quickly "entered" with a resistance Q of 21.0 and a resistance of 1.7.

An automatic switch that turns OFF or a known power supply circuit (1) (for example, AC power) that frequently switches the electrolyte between forward and reverse directions are connected to both electric currents α01. Rapid magnetic field derivation, cancellation, or 5 between αυ
Frequent rod transformations of approximately 0 to 60 cycles of AC frequency are repeatedly and continuously performed to vibrate the side steel plates (9), respectively.

However, it goes without saying that when the carrying arm (5) comes to the clamping position, the magnetic field is fixed to facilitate clamping and to prevent positional displacement.

Further, when adjusting the strength of the magnetic force in response to a change in one dimension of the plate thickness of the steel plate (9), the variable abrasive force @ of the circuit (1),
0 Set a suitable magnet for each old iron.

Furthermore, when loading and replenishing the laminated control plate (9)..., it will be very difficult to load if magnets are generated.
At this time, the manual power supply is turned off so that the steel plates (9) can be loaded.

Furthermore, when the transport arm (5) comes to the clamp position, the magnetic field may be fixed to facilitate clamping and to prevent positional deviation.

(Effects of the Invention) As described above, the present invention incorporates an electromagnet in place of the fixed static magnetic field of the magnet incorporated in the conventional automatic steel plate take-out device, and rapidly and frequently excites and extinguishes the magnetic field. , or by moving it, the closely attached steel plates are violently vibrated, and the impact is generated by the magnetic field. Since this is a trigger for repulsive separation of steel plates, it can also be used to prevent steel plates from sticking together due to oil on the surface of the steel plates, which could not be separated using conventional magnets, or from moored steel plates due to pars on the periphery. definitely 1
It can be separated into pieces.

In addition, even when there is a change in the thickness of a steel plate, there is no need to search for suitable magnets and replace them, as in the past, but by simply adjusting the strength of the current. In addition to being able to easily set the optimal conditions, the magnetic field can be easily fixed or erased just by inputting operations when unloading steel plates using the carry-out arm or when loading and replenishing new steel plates. , and can be reproduced, making it possible to work easily and accurately.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a vibration isolating device according to the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. FIG. 4 is a circuit diagram of the present invention. (B)...Vibration isolation device, (T)...Automatic steel plate take-out device, (gate)...
...is a magnet, (1)...a circuit, (2)...a push-up piston, (3)...a bracket, (4)...... Frame, (5)... Transfer arm, (6)... Casing, (7)... Coil, (8)... Iron core, α0), 0υ...Magnetic pole, (2), α conflict...Variable resistance. Patent applicant Nagao Iron Works Co., Ltd. Representative Patent attorney Yasushi Miyamoto - Potato f diagram γ $ 2 diagram 3 diagram potato 4 diagram

Claims (1)

[Claims] 1. It has a push-up mechanism that moves the laminated steel plate horizontally upward, and a magnet is placed close to the side of the upper part of the laminated steel plate, and the steel plate is automatically suspended from above by a transfer arm. In the device for taking out from above, the magnet is used as an electromagnet, and the input current of the electromagnet can be turned on, turned off, or polarized to separate the upper parts of the laminated steel plates one by one by vibration and magnets. A vibration isolator for laminated steel plates is also characterized in that the current can be adjusted optimally according to the dimensions and thickness of the steel plates.