JPS6056729A - Method of taking out designated number of iron sheets from stack of iron sheets - Google Patents

Abstract

PURPOSE:To separate and take out a designated number of iron sheets by measuring the number of iron sheets floated by magnetic force and inserting a fork member. CONSTITUTION:When an electric current is applied to a magnetic force generating device 10, the upper portion of iron sheets is floated. Subsequently, when a motor 18 is started, a screw shaft 16 is turned through a pair of bevel gears 20, 17 by the turning force to lower a sleeve 14, so that a photo-electric switch 29 of a fork member 27 integral with the sleeve 14 is adapted to measure the number of floated iron sheets 2. When the measured number amounts to a designated number, a controller is operated to stop the motor 18. Whereupon, a switch valve is operated to send pressurized air to a cylinder 24, so that a piston rod 26 is advanced to insert the fork member between the measured number of iron plates and the subsequent iron sheet. On detecting such insertion, a limit switch is operated to start the motor 18 reversely so that the fork member 27 is moved above the stacked iron sheets.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for taking out a predetermined number of iron plates from a stack of thin iron plates used, for example, as an iron core of a rotating electric machine.

[Technical background of the invention]

Generally, in order to take out a predetermined number of iron plates from a laminated iron plate, a worker counts the number of laminated iron plates, separates and takes out the predetermined number of iron plates by hand, but repetitive manual work requires mental stress. However, there are disadvantages such as severe physical fatigue, poor work efficiency, and frequent mistakes in counting the number of sheets.

Therefore, as shown in FIG. 1, a stack of iron plates 2, 2, etc. is placed on the table lifter 1, and one side of the stack is fixed using the fixed arm 4 of the separating and extracting device 8 arranged adjacently. A hook 6 formed at the tip of the movable arm 5 that fully contacts and moves in the horizontal direction.
A technical means has been developed in which a predetermined number of iron plates are separated and taken out by moving the iron plate 2 held by the iron plate 2 in the direction of arrow A.

The above technical means, as shown in FIG.
, and the length of the hook 6 provided on the movable arm 5 is made to have a thickness of t and a slightly shorter dimension 1, and the iron plate 2 is separated by the movement of the movable arm 5.

[Problems with background technology]

However, with the above technical means, the iron plate cannot be separated and taken out.

Since this is done by sliding the iron plate, scratches occur on the surface of the iron plate, which is unfavorable in terms of quality, and scratches are a big problem, especially when the iron plate surface is coated. In addition, if the thickness of the iron plate is extremely thin, the length 1 of the hook 6 may be set smaller than the thickness t of the iron plate. In such a case, the hook 6 may cause large scratches on the surface of the iron plate, and If the length 1 of the hook 6 is too shorter than the thickness t of the iron plate, the number of iron plates to be taken out will vary, and depending on the relationship between the hook and the thickness of the iron plate, it may become quite troublesome to separate and take out the iron plates. be.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object of the present invention is to provide a method for accurately measuring and separating a predetermined number of iron plates from a laminated iron plate without damaging the surface of the iron plates.

[Summary of the Invention] The present invention provides a magnet on the upper side surface of a laminated iron plate, measures a predetermined number of iron plates levitated by magnetic force using a sensor,
By inserting a fork under the measured iron plate and raising the fork, you can take out the exact number of pieces without damaging the iron plate surface.

It is designed to be taken out separately.

[Embodiments of the invention]

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

In FIG. 8, the same members as in FIG. 1 are given the same reference numerals.

In FIG. 8, reference numeral 1o indicates a magnetic force generating device such as an electromagnet, and a magnetic force generating device t.

is a support shaft 11゜1 erected on both sides of the table lifter 1.
It is attached to 1. The magnetic force generating device [10, 10] is arranged in the same horizontal plane and adjacent to the side surface of the laminated iron plate 2 placed on the table lifter 1, and is arranged on the uppermost surface of the laminated iron plate 2 and this by the magnetic force generated by energization. The multiple iron plates following the above are kept in a floating state.

On the other hand, a Nureve 14 is attached to a vertically vertically slidable joint frame 13 of the separating and extracting device 12, which is disposed adjacent to the table lifter 1. Nureve 1 above
4 and the frame 13 have grooves 13a and 14a extending in the axial direction.
They are connected to each other by a key 15 attached to the. A threaded shaft 16 arranged to extend in the vertical direction is screwed into the threaded portion provided at the lower end of the Nurieve 14, and a motor 18 attached to the bevel gear 17 is fixed to the lower end of the threaded shaft 16. The screw shaft 16 is rotated by meshing with a bevel gear 20 provided on the shaft 19.

On the other hand, a bracket 22 is fixed to a flange 21 provided on the upper end side of the sleeve 14 via bolts 23, and an air cylinder 24 is provided on this bracket 22 so as to extend laterally. There is still a guide rod 25 arranged parallel to this air cylinder.

A proximal end 28 of a fork-like member 270 is secured to the end of the cylinder rod 26 of the air cylinder 24. In order to ensure the lateral movement of the fork-like member 27,
The end of the guide rod 25 is connected to this fork-shaped member 27. At the tip of the fork-shaped member 27,
A reflective photoelectric switch 29 is provided so that the number of iron plates 2.2 in a floating state can be measured by the reflective photoelectric switch 29.

The detection signal of the number of iron plates from the reflective optical switch 29 is sent to a controller 30, as shown in FIG. This signal is then compared with the detection signal. When both signals match, the controller 30 is activated, and the fork-shaped member 270 is moved back and forth and the fork-shaped member 27 is moved up and down to separate and take out a predetermined number of iron plates from the laminated iron plates.

Next, the effect will be explained.

First, the setting device 31 is operated to determine the number of 20 iron plates to be skewered, and the number is stored in the controller 30.

Next, move the table lifter 1 and move the magnetic force generator 10.
is positioned close to the side near the top surface of the laminated iron plates 2.

In this case, the fork member 27 is positioned above the top surface of the iron plate 2.

In this state, when the magnetic force generating device IO is energized, the magnetic force generated thereby causes the upper part of the iron plate 2 to float above the lamination, as shown in FIG. 5a.

Next, when the operation switch is operated to start the motor 18, its rotational force rotates the screw shaft 16 through a pair of bevel gears 20.17, and by the screw shaft 160 rotations,
As shown in FIG. 5, the Nurieve 14 is lowered and the photoelectric switch 29 of the fork-like member 27 provided integrally therewith is activated.
However, the number of 20 iron plates floating was counted.

When the number measured by the photoelectric switch 29 reaches a predetermined value, the controller 30 is activated to stop the motor 18.

Then, a switching valve (not shown) operates, pressurized air is sent to the air cylinder 24, and the binton rod 26 moves forward, so that the fork-shaped member 27 moves between the measured number of iron plates and the following iron plate. (Fig. 5C).

When the insertion of the fork-like member 27 is completed, a limit switch (not shown) is activated to detect this movement.

The motor 18 is started in the opposite direction and the fork-like member 27 is turned on.

As shown in Figure 5d, it is moved above the laminated iron plate.

As a result, a predetermined number of iron plates are separated from the laminated iron plates.

The switching valve is then actuated and the pier tongue 26 of the air cylinder 24 is retracted, as shown in FIG. 5e.

The separated iron plate 2 can be easily taken out manually or the like.

6 and 7 show another embodiment of the present invention, in which the flange 14 of the Nureve 14 is
A spur gear 40 is fixed to a, and a bracket 42 to which a flanged shaft 41 is fixed is attached to the center hole of the spur gear 40 so as to be rotatable in a horizontal plane via a bearing 43.

This bracket 42 is attached to the shaft 45 of the motor drive.
By meshing the gear 46 provided on the bracket 42 with the spur gear 40, the air cylinder 24 and fork-shaped member 27 provided on the bracket 42 are rotated as shown in FIG.

〔Effect of the invention〕

As described above, according to the present invention, the number of iron plates levitated by magnetic force is measured, a fork member is inserted between the levitated iron plates, and a predetermined number of iron plates are separated and taken out, thereby preventing scratches on the iron plate surface. It is possible to accurately separate a predetermined number of iron plates without attaching a steel plate, and if the separating device is appropriately arranged, automated and continuous work becomes possible, and productivity can be improved.

[Brief explanation of drawings]

Fig. 1 is a side view showing a part of a conventional iron plate separation/removal device in cross section, Fig. 2 is an explanatory diagram of the operation of the same device, and Fig. 3 is a cross section showing a part of the device used to carry out the present invention. Side view showing,
Figure 4 is a control block diagram of the device, Figures 5a to 5
Figure e is a diagram showing the operating procedure, and Figures 6 and 7 are diagrams showing other embodiments of the present invention. 1...Table lifter, 2...Laminated iron plate, 10...
・Electromagnet, 13... Phonome, 14... 2 leaves, 21... Flange, 22... Bracket, 24...
...Air cylinder, 26...Pier tongue, 27.
...Fork-shaped member, 29...Photoelectric nuitchi. Applicant's agent Kiyoshi Inomata 15 Figure 1 Figure 2 Figure 3 Figure 14? q Figure 6 Figure 7

Claims (1)

[Claims] A plurality of magnetic force generators are arranged adjacent to each other around the upper part of the laminated iron plate, and the uppermost surface of the laminated iron plate and the following plural iron plates are brought into a floating state by the magnetic force generated by the magnetic force generator, and then placed at the fork end of the take-out device. The number of iron plates in a floating state is measured by an attached sensor, a fork is inserted under a predetermined number of iron plates, and the fork is raised to take out a predetermined number of iron plates from a laminated iron plate. How to take out a number of iron plates.