JPS59213287A - Attracting device with rotor by dc electromagnet - Google Patents

Abstract

PURPOSE:To lightly and effectively attract and transfer a machined iron plate or the like by providing a rotor formed of an elastic material pressed in an opposite attracting direction freely in the rotation and elevational movements on the lower surface of an electromagnet, and providing a similar rotor on the lower surface of a pole magnetized in different polarity from the rotor. CONSTITUTION:An electromagnet M is composed by winding an electromagnet coil 6 on a coil core 4, and mounted on the center of the inner surface of the upper surface iron plate 1 of a long case A. A rotor B1 formed of other magnet material such as a steel ball is provided on the lower surface of the core 4, free in the rotation and the elevational movements to the core 4, and pressed and energized in the opposite attracting direction, and the rotor B1 is provided to be magnetized in the same polarity. Columnar units 13 of a magnetic material are mounted on both sides of the inner surface of the plate 1, magnetized in different polarity from the rotor B1, and a rotor B2 formed of other magnetic material such as a steel ball is similarly provided to the rotor B1 at the center on the lower surface. An electromagnet M and the columnar unit 13 are alternately disposed in a case A so that the rotors B1, B2 become poles in the magnetized state, thereby lightly and effectively attracting and transferring an iron plate E.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction device with a rotating body using an H-flow electromagnet, which is used as a holding device for shearing, etc., for cutting thin plates or long objects made of magnetic materials such as iron plates.

Conventionally, as this type of adsorption device, Japanese Patent No. 982205 (
(Special Publication No. 54-14786), Utility Model Registration Box 1.
24. No. 1884 (publication number 9191 of 1984)
, Utility Model Registration No. 1292709 (Utility Model Registration No. 1292709
624/publication), but none of these! The roller body, which is equipped with two rollers coaxially and freely rotating at a certain interval, is captured by a rail core that is magnetized by an excitation coil. Because of this structure, there is no problem in adsorbing and transferring the iron plate, etc. to be processed along the JFJ line along the rotational direction of the roller, but displacement to the left and right or diagonally, etc. is due to the relationship with the adsorption force. However, in order to achieve precision in cutting dimensions, etc., it is necessary to adjust the applied voltage to lower the suction force to the extent that it can be lifted, and carefully insert the board along the sight gauge. There was room for improvement in actual use.

This invention has been made with the aim of eliminating such drawbacks, and in particular, by replacing the conventional gluer with a steel ball or other rotating body, it is possible to easily and reliably adsorb and transfer the iron plate, etc. to be processed, and to move it forward and backward. By making it possible to move in any direction (left, right, diagonal), we aim to improve the accuracy of cutting dimensions, etc., and improve workability. The object of the present invention is to provide a suction device for rotating a rotating body using a DC electromagnet, which ensures reliability of suction and holding through automatic adjustment of force, and also realizes an improvement in safety.

Below is a concrete GJ based on one example, iii
! Akira 4-ru.

In Figures 1 to 5, (Δ) is minus one side iron plate (
Side yokes (2) are attached to the bottom of both sides of 1), (2) is a long case that is fixed by GJ-, such as screws or welding, and formed into a cross-sectional opening shape, and forms a magnetic circuit, and is attached to both sides of the top iron plate (1). The second part has a boss (:3J,
(3)'k (ifii is getting better.

f+ua is an electromagnet constructed by winding an electromagnetic coil (6) around a coil core (4) with a coil bobbin (5) and all valves 1-. 7) From 6.2, several poems are installed in a hanging manner. (B,) is a rotating body made of steel balls or other magnetic materials installed at the center of the bottom surface of the coil core (4) of the electromagnet, which rotates and moves up and down relative to the coil/L core (4). is free and is pressed in the anti-adsorption direction (downward in the figure), and each rotating body (B1) is provided so as to be magnetizable to the same polarity. That is, the rotating body (B1) is held in a hemispherical holding case (8) made of magnetic material through a bearing (9) so that it can rotate freely with its lower part exposed. The holding case (8) is pressed against the anti-adsorption force surface (indicated in the figure) by pressing and bending, and fitted into the support case (11) made of magnetic material so that it can freely move up and down. Me 1
: H, Q l-me The support case (11) is inserted into the inlet hole (12+) drilled in the center of the lower surface of the coil core (4), and the lower part of the rotating body (B1) is inserted through the adhesive. It is buried and fixed in such a way that it protrudes slightly downward (see Figure 5).
13) is a book-like body made of magnetic material, and bolts (14, 1) are installed on both sides of the inner surface of the top iron plate (1) of the long case (Δ). A rotating body (B2) made of a steel ball or other magnetic material is magnetized with a different polarity to (B1), and is free to rotate and move up and down in the opposite direction ( The structure is similar to that of the rotating body (B1).
), so we will refer to the same number and omit its explanation. Equipped with the above rotating body (B+)'? The columnar body (13) equipped with W electromagnet opening) and a rotating body (B2) is a rotating body (E,)
, (B2) become magnetic poles in the magnetized state. For example, the rotating body (B,)
is one pole, and the rotating body rE2) GJ: becomes the S pole, so that the N and S poles alternate (see Figure 2).
.

(15) is the bottom cover of the long case (A), which is made of stainless steel plate or brass plate.
) side yokes <2), (2)', and fix the upright pieces (16j, (16f) at both ends with screws etc. to the inner surface of (2)', and insert through holes (
17) to make the lower protruding parts of the rotating bodies (B+) and (B2) slightly protrude from the lower surface of the case through the insertion holes (+71'i. ) to keep the distance between the side yokes (2) and (2)' constant, so the columnar body (+311f penetrates and holds both yoke 1) (11+1°(J++y makes the side yoke (2) ) , (fixed at 2γ. (20゛ is one suction roller installed at the end on the entrance side of the bottom surface of the long case (A). υ is a current-carrying electric wire.

In the configuration described in -1-, when a DC voltage is applied to the electromagnet (b), 'i'1! When the magnetic coil (6) is fully excited, the electromagnetic coil (6) of a plurality of electromagnets (b) arranged in parallel is magnetized so that the G polarity is in the same direction. Therefore, if we unify the directions of the electromagnetic coil zy(6)(1') so that the lower side f is magnetized to the N pole, then
(Magnetic flux b as shown by aγ) flows from N Mi to the S pole forming a closed loop. That is, magnetic flux flows between the iron plate (1) and the coil iron core (4).

Moreover, since the part of the columnar body α3) where the rotating body (B2) is attached is relatively S-pole, the magnetic flux naturally flows in the next path as well.

That is, the arrows (b) and (bY
- (As shown, the magnetic flux flows through one coil core (4). Therefore, both rotating bodies (B, ), (B2) and the other gap part (G), that is, the coil core (4) between the lower surface of the side yoke (2), (2)' and the iron plate (E), and between the lower surface of the columnar body 03 and the iron plate (E). The iron plate (E) is fully adsorbed and held. Further, as the iron plate (E) becomes thicker, the magnetic resistance decreases, so that the magnetic flux passes through it better and the iron plate (E) is attracted more strongly. At this time, the rotating body (El), (B2) is the spring θ(
Since the iron plate (E) is pushed in the suction direction (upward in the figure) against the magnetic pole, the gap (G) with the iron plate (E) becomes narrower, and the iron & (E) gets closer to the magnetic pole and is more stably attracted and held. be.

In addition, since the support case (Ill has a space with a large magnetic resistance due to the insertion of a spring 0), most of the magnetic flux flows from the support case (Ill) to the holding case (8) and the rotating body (1-4).
B)) or (B2) to flow with the rotating body (Bl) or 4
:j', (B2) and bearing (9) are in magnetic phase q
, the degree of adsorption is small. Therefore, even if the iron plate (E) is moved while the iron plate (E) is fully adsorbed, the rotating body (B1) or (B2) will roll easily according to the movement of the iron plate (E). It will be done. That is, the rotating body (B2
) or (B2) and the hair ring (9) stick together and brake the movement of the rotating body (BX) or (B2), causing slippage between the iron plate (E) and the iron plate (E). There will be no slipping or scratches on the top, and the pressing force of the spring 00 will not only automatically adjust the suction force depending on the thickness of the iron plate (E), but also prevent the rolling of the rotating body (B1) or (B2). In addition to making it smooth, the rotating body (B1) or (B2) each becomes a magnetic pole, and by combining these so that the 1 magnetic pole and the S pole are alternate, the iron plate (E) is stably attracted and held in balance. can always be done.

Next, to explain the case where the suction device of the invention of (2) and (7) is used as a holding device of a shearing machine, Figs.
In the figure, an iron plate (E
), and (2) is a hack gauge that determines the cutting = f method, and is designed to be able to freely adjust the movement in the front and back direction. (23 is a fixed lower blade, the upper side is a movable upper blade, and the upper side is a plate holder. The suction device (D) is used to hold the iron plate (F, ) to be cut, which is placed on the table (T) of the shearing machine (F). The upper surface and its rotating body <B+), (B2) downward or 11) - located on the flat surface, or the rotating body (
It is preferable to install it so that it is located facing downwards in B1) (B2) or slightly below the top surface of the iron plate (E), but under normal usage conditions (in this case, there is no need to adjust it each time, and the rotating body (B
l) Since (B2) can be moved upward against the spring QG under magnetic attraction, it is best to set the position for relatively thin objects so that the gap due to the thickness of the iron plate (E) (G
) The size of the rotating body (B+) due to the iron plate insertion Q, (
The mechanical push-up G of B2) naturally changes, so the suction action! Coupled with the automatic adjustment of the suction force due to the thickness and thinness of the U and L plates (13), smooth and reliable suction and holding is always performed without causing any distortion or the like. Shear link machine (F
), when the movable upper blade (2) is at the upper limit position, this state is detected by a suitable detector (for example, a limit switch) and the electromagnetic coil (6) of the suction device M (D) is energized. Therefore, when the iron plate (E) on the table (T) is moved backward, the iron plate (E) is moved to the rotating body (B+), (B
2) Move lightly until it hits the back gauge □□□, which is suctioned and held by S and is set in advance. When it hits the iron plate (E) or the back gauge (2), an appropriate detector (for example, a beam switch) detects this and lowers the plate holder to release the iron plate (
When E) is suppressed and held, the movable upper blade (C) is maintained in a state where it can be lowered by manual or foot switch etc.
When the iron plate (El) is lowered and reached just before cutting, the electromagnetic coil (6) is de-energized by cutting off the current to the suction device (D) by appropriate means, and the cutting is rubbed with G to avoid any hindrance. In addition, a side gauge (not shown) was installed on one side of the shearing machine (CF), and the cut (E) was placed along this side gauge G so that 11- was placed at the corner from the beginning. In addition to holding and moving the iron plate to be cut (
Depending on the size of the B+, it may be difficult to insert it along the side gauges at the same time on the left and right sides, such as when seven people are handling a long object.
11 In some cases, it may not be possible to make a line along the side gauge until reaching the cutting position theory. By using the adsorption device (D) of this invention, the iron plate (1:) is
1-Free to the right, diagonally to the inn. It is extremely effective because it can be moved.

In addition, although shown in Fig. 8 (IJ) and M, the top iron plate (
To 1)! This is an example in which a set of Mj & stone (goods) is installed in a row, and the relative G is different polarity (2+, since there is no iron core like (21'), the side yoke is magnetized. Part 1-1. A rotating body is installed around the fill iron core, which is wound with an electromagnetic coil so that it is magnetized by Shinden N hard and S@I.
It is something that can be written. In this case, since the magnetic flux of the rotating body G can be concentrated and its adsorption force can be strengthened, it can be applied to a relatively large shear link machine or the end of a shear link machine.

As explained above, this invention is capable of moving back and forth while maintaining the horizontal accuracy of machining iron plates, etc., as explained above.

Free movement in left and right, diagonal directions, etc., 1 displacement and plate thickness (increased suction force) allows joints to move more easily and reliably than M, and the cutting dimension is 11'1 degree. When used as a holding device for a shearing machine, the steel plate can be cut to a specified size without bending. In addition to saving labor and manpower, it is possible to make full use of machine capabilities.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention with a partially cut-out size of 1ft1.
Fig. 2 is the same elevation view, Fig. 3 is the X-〉, section 111 of Fig. 1, and Fig. The cross-section mJ diagram, Figures 6 and 7 are for the usage form store/
A hemostasis diagram showing an example of the hemostasis diagram and the side... Figures 1 and 2 are explanatory diagrams of different magnetization states. (A), Long case, [1) Upward iron plate, (2)+,
(2+'・Side yoke, (goods)・Box, magnet, (4)・Coil core, (6)−・Electromagnetic coil, (B+), (B
2)・Rotating body, Q(+・・pressing spring, 04・・column body.

Claims (1)

[Claims] A rotating body consisting of a steel ball or other magnetic material, which is free to rotate and move freely on the underside of the coil core around which a 11-magnetic coil is wound, and is pressed in the anti-adsorption direction, prepares for magnetization in the same polarity.
The lower surface of the first magnetic pole, which is magnetized with a polarity different from that of the rotating body, serves as a similar rotating body, and these rotating bodies are placed in a long case made of a magnetic material with an opening in cross section, and a portion thereof is inserted from the bottom surface of the case. An adsorption device with a rotating body using direct current magnets, characterized in that the magnets are arranged alternately so as to project slightly and become magnetic poles in a magnetized state CJ.