JPS583008B2 - Device that applies strain to the steel plate surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a steel sheet, in particular a steel sheet that can produce a low core loss electrical steel sheet by imparting minute linear deformation regions (hereinafter referred to as micro-strain) to the surface of the grain-oriented electrical steel sheet. This invention relates to a device that applies strain to a surface.

Efforts have been made to lower the core loss of electrical steel sheets in the past using various methods.One method is to apply a load to a spherical rotor made of a hard material and press it against the steel sheet to rotate the spherical rotor. A method has been developed for drawing lines on the surface of a steel plate while applying a load to the steel plate while applying a load in a direction perpendicular to the direction of movement of the steel plate. There is a known method to do this.

However, in both of these methods, the steel plate is once stopped and drawn, and the drawing direction must be not parallel to the rolling direction, that is, the longitudinal direction of the steel plate, but at a certain angle, preferably at right angles. Moreover, it is known that it is more effective to narrow the wire spacing to 5 to 10 mm, and for this reason, 200,000 or more wires must be drawn perpendicular to the rolling direction for one steel sheet coil.

For this purpose, it is desirable to continuously thread and draw the steel plate, and the appearance of such equipment has been desired.

The present invention is in response to the above-mentioned needs, and aims to provide a device that applies micro-strain to a steel plate extremely efficiently and continuously without stopping the steel plate. However, a plurality of steel balls are buried in each of a plurality of grooves formed on the outer peripheral surface of the roll body, parallel to the longitudinal direction of the roll body, and at arbitrary intervals, and the steel balls are placed at a constant distance. A straining roll configured to be movable in the radial direction of the roll body by the pressing force of the roll body, and a receiving roll configured such that a steel plate to be strained running on the roll circumferential surface is wound around and rotated by the running force of the steel plate. The straining roll is arranged so that the steel plate to be strained can be interposed on the circular surface of the receiving roll, and the moving speed of both rolls is synchronized by a gear mechanism. When the moving speed of the steel plate and the circumferential speed of the straining roll are synchronized, the pressing force of the steel balls of the straining roll is used to continuously create strain lines at regular intervals on the surface of the steel plate to be strained. The feature lies in the device that applies strain to the steel plate surface.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic diagram of a typical line in which the present strain imparting device is installed.

An example will be described below in which two strain rolls are used to introduce strain onto a steel plate at a pitch of a/2.

The untreated steel sheet 1 wound into a coil is rewound by an unwinding machine 6, and is sent out while being pressed against a receiving roll 5 by a guide presser roll/pinch roll 2. B, passes between the guide roll 8 and the receiving roll 5, and is wound around the winder 7.

4 is a drive motor for driving the guide presser roll and pinch roll 2; 3 is a clutch that connects the drive motor and the guide presser roll and pinch roll 2;

The above-mentioned sheet threading is performed by driving the motor 4 by connecting the guide press roll/pinch roll 2 and the motor 4 with a clutch 3.

When the tip of the steel plate 1 is wound around the winder 7, the connection between the guide press roll/pinch roll 2 and the drive motor 4 is severed by releasing the clutch 3.

After that, the steel plate 1 is moved by being pulled between the unwinding machine 6 and the winding machine 7, and the receiving roll 5 is rotated while being wound around the receiving roll 5 without slipping, and the receiving roll 5 and the straining rolls A and B are The same rotational speed mechanism, for example, gears 9 are connected by gears 10.9 and 11, and the rotation of the receiving roll 5 causes the straining rolls A and B to rotate at a circumferential speed synchronized with the moving speed of the steel plate 1.

In this example, the receiving roll 5 and the straining rolls A, B are rotated by the running force of the steel plate 1, but a drive source may be connected to the receiving roll 5 or the straining rolls A, B.

Therefore, points P and Q are where the outer peripheral surfaces of the steel plate 1 wound around the receiving roll 5 and the straining rolls A and B come closest to each other in a state where the moving speed of the steel plate 1 and the circumferential speed of the straining rolls A and B are synchronized. The structure is such that strain lines A and B at a desired interval are continuously applied to the surface of the steel plate 1 in the vicinity of the strain rolls A and B.

Next, details of the receiving roll 5 and the straining rolls A and B will be explained.

FIG. 2 is a cross-sectional view along A-A (and a cross-sectional view along E-Y) of the receiving roll 5 and straining roll A (and straining roll B) shown in FIG.
shows.

The receiving roll 5 is equipped with a gear 9 as shown in the figure, and a gear part 10 of the straining roll A and a gear part 11 of the straining roll B.
It meshes with the.

The receiving roll 5 is used by being attached to a fixed frame 12, which is partially illustrated.

13 and 14 are rolling bearings, 15 is a roll shaft, 16 and 1
7 is a retaining ring for receiving the rolling bearings 13 and 14 and fixing them to the roll 5; 18 is a rotation stopper plate for the roll shaft 15; 19
is a set bolt that sets the rotation stopper plate 18.

The receiving roll 5 can be rotated around a roll shaft 15 with a small rotational moment.

Next, straining roll A and straining roll B (straining roll A and straining roll B have exactly the same structure and will be hereinafter explained as straining roll A) are composed of an outer cylinder 20 and an inner cylinder 21. As shown in FIG. 3, grooves 2 are formed on the circumferential surface of the outer cylinder 20 at a constant pitch a in the circumferential direction, parallel to the central axis of the outer cylinder 20.
2 is cut, and a plurality of balls (steel balls) 23 for applying strain to the steel plate 1 are arranged in the groove 22.
3 has both ends pressed with a constant force by compression springs 24 and 25, and remains stationary at a predetermined position.

Reference numerals 26, 27, 28, and 29 are guides for the compression springs 24 and 25, and 30 is a spring holding screw.

Further, in the groove 22, as shown in FIGS. 3 and 4A, a bar 31 is provided inside the ball 23 to move the ball 23 by a certain distance e in the radial direction of the outer cylinder 20.
is placed, and this bar 31 is connected to the pin 3 as shown in Fig. 4A.
2, 33, members 34, 35, and 36, members 34 and 35 are connected in a link shape by a pin 32, members 35 and 36 are connected in a link shape by a pin 33, and members 34 and 35 are connected in a link shape. 35 and member 3
5 and 36 are rotatable around pins 32 and 33, respectively, and are connected to the ball 2 by a bar 31.
3 can be pressed evenly.

The tip of the member 36 (the left end in the figure) is spherical as shown in FIG.
The friction plates 57 and 58 are pressed against each other.

Further, in the groove 22, an intermediate ball 38 is placed inside this bar 31.
A plurality of intermediate balls 38 are arranged, and contact with the bar 31 is controlled by an intermediate ball 38.
Therefore, when the bar 31 moves in a direction parallel to the central axis of the outer cylinder 20, it can move while receiving only a small resistance force.

Both ends of the intermediate ball 38 are still pressed by the compression springs 39 and 40, and the intermediate ball 38 remains stationary at a predetermined position.

41 is a guide for the compression spring 40, and 42 is a spring holding screw.

Further, a bar 43 is placed in the groove 22 inside the intermediate ball 38, and this bar is fitted into the outer cylinder 20 so that it can freely move in the radial direction.

The outer cylinder 20 is provided with fluid inlet/outlet holes 44 equal in number to the number of rows of balls 23.

As shown in FIGS. 2 and 3, grooves 45 are cut in the inner cylinder 21 of the straining roll A parallel to the longitudinal direction of the roll shaft 54 at a certain pitch in the circumferential direction. A tube 46 is installed with a blind cover 47 provided at one end thereof and an open state at the other end for fluid ingress and egress.

The open end of the rubber tube 46 is fitted into the pressurized fluid inlet/outlet hole 44 in the outer cylinder 20 .

In addition, the inner cylinder 21 is connected to the outer cylinder 20, and the rubber tube 46 is connected to the bar 4.
The fastening bolt 48 is fitted so that it overlaps the inside of 3.
49, 50 and the disc 51, the inner tube 21 and the outer tube 20 are tightened together.

The rubber tube 46 is expanded by applying an appropriate fluid pressure inside through the fluid inlet/outlet hole 44, and presses the ball 23 against the steel plate 1 via the bar 43, the ball 38, and the bar 31.

The inner cylinder 21 is set on a strain-applying roll shaft 54 by means of rolling bearings 52 and 53.

As the steel plate 1 is pulled and moved by the winder 7, rotational force is applied from the steel plate 1 to the receiving roll 5, and the rotational force is transmitted from the gear part 9 of the receiving roll 5 to the gear part 10 of the straining roll A. The strain roll A is configured to easily rotate around a shaft 54 fixed to bearings 52 and 53.

55 and 56 are rolling bearings, and 52 and 53 are retaining rings for fixing the inner cylinder 21.

As shown in FIGS. 2, 5, and 6, at one end of the fixed shaft 54, there is a disk 59 to which a flat friction plate 57 and a swash plate friction plate 58 are attached, and a key 60 and a tightening nut. 61.

The spherical end of the bar 31 is pressed against the friction plates 67 and 58 by the compression spring 37, and as the straining roll A rotates, the bar 31 causes friction between the disc 59 and the plates 57, 58.
The bar 31 moves parallel to the longitudinal direction of the roll shaft 54 while rotating around the shaft 54 and passing through the swash plate portion 58 .

At this time, when fluid pressure is applied within the rubber tube 46, the ball 23 rolls and moves on the steel plate 1 while being pressed against the steel plate 1, giving strain to the steel plate 1.

At this time, the spring 25 is compressed by being pushed by the ball 23, and the spring 25 is compressed by the ball 23.
Stretch by the movement of 4pa ball 23.

In this example, the bar 31 is moved by the friction plate 57 of the disc 59 and the swash plate friction plate 58, but the present invention is not limited to this, and other driving sources (for example, a cylinder) may be used.
Piston operation may be performed using the .

At the other end of the fixed shaft 54 is a port 62 for introducing fluid into the rubber tube 46, as shown in FIGS. 2, 7, and 8.
and port 6 for withdrawing fluid from rubber tube 46.
3 is provided with a disc 64 which is prevented from rotating by a key 65, and a tightening nut 68 via a compression spring 66 and a spring restraining seat 67.
is pressed against the outer cylinder 20 of the straining roll A.

A pipe 69 for introducing pressure fluid is connected to the fluid introduction port 62 of the disc 64.

Further, a pipe 70 for releasing the fluid to the atmosphere is attached to the fluid discharge port 63.

71 is a guide for the spring 66.

The strain-applying roll A is used by being attached to a fixed frame 12, which is partially illustrated.

72 is a rotation stopper plate for the shaft 54, and 73 is a set bolt for setting the rotation stopper plate.

Next, the procedure for applying strain to the steel plate 1 will be described.

For the sake of explanation, a virtual rotation reference line X is provided on the straining roll A, and the explanation will be given with reference to FIGS. 5 to 8.

As mentioned above, the steel plate 1 is wound around the receiving roll 5 so as not to slip, and the movement speed of the steel plate 1 is synchronized with the circumferential speed of the straining roll A. Distortion is applied to the surface.

a) First, we will explain how to apply continuous strain using strain applying roll A.

As shown in FIGS. 2, 3, 7, and 8, pressure fluid is regulated from a fluid source to a pipe 69 and a fluid introduction port 62.
sent to.

Due to the rotation of the straining roll A, an arbitrary fluid inlet/outlet hole 44 opens at a port 62 at an angle α° from the rotation reference line X of the straining roll A.
When reaching point A, pressure fluid enters the tube 46 as shown in FIG. 3, and the expansion of the tube 46 pushes the bar 43, and the bar 43 transmits a pushing force to the intermediate ball 38, causing the intermediate ball 38 to push the bar 31. , the force is transmitted to the ball 23, and the ball 23 flies out from the roll surface by a height e.

When the straining roll A further rotates by β°, the ball 23 comes into contact with the steel plate 1 that is being moved around the receiving roll 5.
As the straining roll A further rotates, the balls 23 are pushed back in the radial direction of the straining roll A.

When the straining roll A further rotates by γ°, the spherical tip of the bar 31 reaches the entrance point D of the swash plate friction plate 58, as shown in FIGS. 5 and 6, and the straining roll A further rotates by δ°. During this time, the spherical tip of the bar 31 passes through the sloped surface of the swash plate friction plate 58, reaches point E, moves in a direction parallel to the roll axis 54 by a distance of 2 x d (d is the ball diameter), and 31, the balls 23 roll parallel to the roll shaft 54 by a distance d while being pressed against the steel plate 1, giving a strain of length d×N (N = number of balls) on the steel plate surface, causing strain. Complete the deployment.

When the straining roll A further rotates by ε° as shown in FIG. 3, the ball 23 is released from contact with the steel temporary 1.

Furthermore, while the straining roll A rotates ζ°, the fluid inlet/outlet hole 4
4 passes through the end point B of the fluid introduction port 62, the inflow of fluid is cut off, and when it reaches the starting point C of the fluid discharge port 63, the fluid in the rubber tube 46 becomes fluid. The fluid inlet/outlet hole 44 is opened to the atmosphere from the discharge port 63, the rubber tube is shrunk, and the ball 23 is released from restraint.
When reaches point C of the fluid discharge port, the spherical tip of the bar 31 reaches point F of the swash plate friction plate 58 as shown in FIGS. Due to this rotation, the spherical end of the bar 31 moves along the swash plate surface to point G, and the bar 31 returns by a stroke of 2×d.

Therefore, as shown in FIGS. 2 and 3, the ball 23 and the spring 2
4 is pushed back by the spring 25 and returned to its original position, and the intermediate ball 38 and spring 39 are also pushed by the spring 40 and returned to their original positions.

As a result of the above, on the steel plate 1 being moved by the straining roll A, there is a continuous d×N
A strain of length can be introduced.

In addition, a strain line of pitch a' is introduced between the strain line of pitch a introduced by straining roll A by the effect of straining roll B, which is the same as the effect of straining roll A described above. As shown in FIG. 9, a strain line with a required pitch of a/2 is finally provided on the top.

As described above, with this device, it is possible to continuously and efficiently apply minute linear strains to grain-oriented electrical steel sheets, and the rigidity of the straining roll itself has the effect of extending the lifespan. be.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the straining roll and receiving roll of the apparatus of the present invention, and Fig. 3 is a cross-sectional view of A-A and E-E in Fig. 1. 4A is an enlarged view showing the Z section in FIG. 3, FIG. 4B is a partial view showing the movement of the member, and FIG. 61 is a cross-sectional view of the arrow in FIG. 5, FIG. 7 is a cross-sectional view of the car in FIG. 2, FIG.
Figure 9 shows the continuous strain on the steel plate obtained with this device. DESCRIPTION OF SYMBOLS 1... Steel plate, 2... Guide holding roll and pinch roll, 3... Clutch, 4... Motor, 5... Receiving roll, A, B... Straining roll, 9, 10 , 11・
...Gear, 6... Rewinding machine, 7... Winding machine, 8...
Guide roll, 12... fixed frame, 13, 14,
52, 53... Rolling bearing, 15, 54... Roll shaft, 16, 17, 55, 56... Retaining ring, 18, 7
3... Rotation stopper plate, 19, 73... Set bolt,
20... Outer cylinder, 21... Inner cylinder, 22, 45... Groove, 23, 38... Ball (steel ball), 24, 25, 39
, 40, 37, 66... compression spring, 26, 27, 28
, 29, 41, 71... Spring guide, 30, 42...
・Spring retainer screw, 31, 43... Bar, 32, 33・
...Pin, 34, 35, 36...Member, 44...
・Fluid inlet/outlet hole, 46... Rubber tube, 47... Blind lid, 48, 49, 50... Fastening bolt, 51, 59,
64... Disc, 57, 58... Friction plate, 60, 65
... Key, 61, 68 ... Fastening nut, 62, 63
...Port, 67...Spring retainer, 69,70...
·pipe.

Claims (1)

[Claims] 1. A plurality of steel balls are buried in each of a plurality of grooves formed on the outer peripheral surface of the roll body, parallel to the longitudinal direction of the roll body, and at arbitrary intervals, and the steel balls are buried at a certain distance. A straining roll configured to be movable in the radial direction of the roll body by a pressing force, and a receiving roll configured such that a steel plate to be strained running on the roll circumferential surface is wound around and rotated by the running force of the steel plate. The straining roll is arranged so that the steel plate to be strained can be interposed on the peripheral surface of the receiving roll, and the moving speed of both rolls is synchronized by a gear mechanism. It is characterized by continuously applying strain lines at regular intervals to the surface of the steel plate to be strained by the pressing force of the steel balls of the straining roll when the moving speed of the steel plate and the circumferential speed of the straining roll are synchronized. A device that applies strain to the surface of a copper plate.