JPS6330086B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stop device for a so-called carrousel reel, which has a rotating reel body with a plurality of reel shafts, each rotatably supported and arranged symmetrically with respect to a central axis. This invention relates to a clamp device.

In the current cold plate rolling operation, so-called continuous cold rolling mills, which can operate continuously without stopping the rolling mill for each strip coil, are used to increase work efficiency and reduce product costs. It is becoming mainstream. As a reel for a continuous cold rolling mill, a so-called carrousel type device conventionally used in special steel strip rolling mills is suitable. A carousel type reel includes a rotating reel body that is rotated intermittently, and a plurality of reel shafts arranged on the same circumference centered on the central axis of the rotating reel body, and the rotating reel body rotates each reel shaft. It is adapted to be indexed and rotated intermittently to index to a predetermined angular position. According to this carousel type reel, while the strip is being continuously unwound from the strip coil attached to one reel shaft, the strip coil attached to the other reel shaft is unwound, and the strip coil that has been unwound is This type of apparatus is suitable as a reel for a continuous cold rolling mill, since it is possible to immediately bring the strip onto the pass line without stopping the rolling of the other strip coil.

FIG. 1 shows a conventional carousel type reel. Reference numeral 1 denotes a rotary reel body rotatably supporting a pair of reel shafts 2a and 2b arranged symmetrically with respect to the axis. Main body 1
One end has a pair of support rollers 3a on the outer peripheral surface,
It is rotatably supported by 3b. A ring gear 4 is fitted to the rotating reel main body 1,
The rotary reel body 1 is rotatably driven by a drive device 6 via a drive pinion 5 meshing with the ring gear 4. On the other hand, a hollow central support shaft 7 is protruded from the other end of the rotary reel main body 1, and this support shaft 7 is rotatably supported by a bearing 9 fixed on a base 8. A drive shaft for driving the reel shafts 2a and 2b supported on the rotating reel body 1 is inserted into the hollow support shaft 7, and this drive shaft is connected to a high-speed motor _M1 or a low-speed motor through a reducer 10. It is adapted to be coupled to one of the prime movers _M2 .

The rotating reel body 1 also includes a reel shaft 2a,
Stop piece 1 for accurately stopping 2b at a predetermined position
1a and a clamp tongue piece 11b (see FIG. 1c). The stop piece 11a is provided on the outer circumferential surface of the rotary reel main body 1 at a position symmetrical with respect to its central axis, and is adapted to be engaged with the stop device 12, and the clamp tongue piece 11b is provided with the clamp device 13. It's starting to engage.
Both the stop device 12 and the clamp device 13 have an engaging member 1 that engages with the stop piece 11a and the tongue piece 11b.
2x and 13x and engaging members 12x and 13
It is composed of hydraulic cylinders 12y and 13y that actuate x. In addition, 14 is the reel shaft 2a, 2
This is a support mechanism for supporting the tip of the rotary reel body 1 and reducing the load applied to the rotating reel body 1.

In the carousel type reel having such a structure, the rotating reel main body 1 is in an upright state and the engaging member 12x is on standby.
Because it is necessary for the stop piece 11a to decelerate before the collision and cause the collision to occur at low speed, and to immediately operate the clamping device 13 to clamp the rotary reel body 1 after the motor has stopped, the engagement member 12x is operated under normal hydraulic pressure. It is done in a cylinder. However, considering the overrun of the rotary reel body 1, a large-diameter hydraulic cylinder is required, and if the cylinder has a large diameter, a large impact force will be generated when the stop piece 11a of the rotary reel body 1 collides with the engaging member 12x. There were drawbacks such as the occurrence of

In order to solve the drawbacks of the conventional structure, the present invention rotates the rotary reel body on a support roller (revolutions with respect to the reel rotation) in order to replace a plurality of reel axes, and after stopping by motor control, clamps the rotary reel body. In this case, it is preferable for the initial reaction force generated in the cylinder to be small in terms of shock mitigation, and in the event of an unexpected trouble, for example, when the motor is out of control, the stop piece of the rotary reel body may collide with the engaging member at a constant speed. Therefore, the cylinder in this case is a stopping device and a clamping device for a carousel type reel, which aims to resolve conflicting demands by using a small-diameter double cylinder when a large capacity is preferred. We aim to provide the following.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a carrousel type reel stopping device and a clamping device according to the present invention will be explained in detail based on embodiments shown in the drawings. In addition, the same numbers are given to the same members as in the conventional structure, and the explanation is omitted.

Two sets of the stopping device 120 and the clamping device 130 according to the present invention are installed on the base 8 at the bottom of the rotary reel body 1 at symmetrical positions with respect to the center of the rotary reel body 1. Stopping and clamping are performed by engaging the stopper arms 121 and 131 with the stopper piece 11a and the clamping tongue piece 11b protruding from the side surface of the girth gear 4. 122 is a stopping fluid cylinder, 132 is a clamping fluid cylinder, and the fluid cylinder 122 has a double cylinder structure as shown in FIG. 2c, and the piston rod 123
A feature is that a predetermined gap l is provided between a and 123b.

To operate the stop device and clamp device according to the present invention, first, when the rotary reel body 1 starts rotating, the stopper arms 121 and 131 are placed in a state in which the rotary reel body 1 can be rotated by both cylinders 122 and 132. (dotted chain line in FIG. 2a), and then rotates the rotary reel body 1 by a drive motor (not shown) to rotate the reel shaft 2a,
At the position where 2b is completely replaced, it is stopped by motor control. In principle, the rotating reel body 1 is decelerated and stopped by the drive motor, but
After the rotary reel main body 1 starts rotating, the stopper arm 121 stops the stop piece 11a and the clamping tongue piece 1.
After 1b clears the retracted position of the stopper arm 121, the stop device 120 is immediately returned to the operating state, so when the rotation is stopped, the stop piece 11a either comes into contact with the stopper arm 121 or not. . After that, in order to prevent the rotating reel main body 1 from swinging when the rotation is stopped, the clamp cylinder 132 is operated, and the clamping tongue piece 11 is activated.
b is tightened and clamped by the clamp arm 131.

Considering errors in rotation stop accuracy, the cylinder 122 requires only the minimum force required to clamp the rotary reel body 1 at the steady stop position, but the cylinder 122 has a mechanical stopper to prevent overrun of the rotary reel body 1 when the motor control is malfunctioning. In order to fulfill this role, it is preferable to make the force small at the beginning of operation to soften the impact, and after a certain stroke, to stop the overrun of the rotary reel body 1 with a large force. In order to deal with this, in the present invention, firstly, when the rotation stops normally, the stop piece 11a hits the stopper arm 121 due to an error in stop accuracy, and the rotating reel main body 1 is clamped by cooperation with the stopper arm 131 during the stop and thereafter. Sometimes piston rod 1
Only 23a acts as an acting force, and when the stopper arm 121 is retracted, the double cylinder port 124
Hydraulic oil is fed from piston rods 123a and 124b, and the piston rods 123a and 123b operate simultaneously, but the operating force at this time is only the acting force of piston rod 123a, and the acting force of piston rod 123b does not work, resulting in an idle stroke. ing.

In addition, when the stopper arm 121 is engaged with the stopper piece 11a, the port 125a of the cylinder 122,
Hydraulic oil is fed from the piston rod 125b, but at this time, the cylinder pressing force is only the acting force of the piston rod 123a, and the piston rod 123b has an idle stroke. That is, in the steady stop and clamped states, the piston rods 123a and 123b perform the same function at the same time, but in either state, the stopper arms 121,
The acting force acting on the piston rod 123a is the capacity of the piston rod 123a.
b is not involved in the acting force.

On the other hand, if we consider an unforeseen situation in which the rotary reel body 1 overruns due to malfunction of the drive motor stop control as an unsteady state when the rotation stops, the stop piece 11a of the rotary reel body 1 will collide with the stopper arm 121. , in this case cylinder 12
As for the second reaction force, it is preferable to use a cylinder that produces a small reaction force at the initial stage of the collision and a large reaction force after a predetermined stroke retreat. Therefore, instead of installing a single large-capacity cylinder, double small-capacity cylinders are used. At the initial stage of a collision, the piston rod 123a operates first, and when the piston rod 123a retreats by the gap l between the rods 123a and 123b, it hits the piston rod 123b. After that, the sum of the acting forces of both piston rods 123a and 123b may act on the stopper arm 121 as a reaction force. As a result, the overrun of the rotary reel body 1 can be counteracted with a small reaction force at the initial stage of the collision to soften it, and then can be counteracted with a large reaction force and mechanically stopped.

Incidentally, when the collision energy is large, it can be dealt with by making the cylinder diameter of the piston rod 123b larger than that of the piston rod 123a, or by arranging a plurality of piston rods 123b.

As described above in detail based on the embodiment shown in the drawings, the carousel type reel stop device and clamp device according to the present invention have a simplified structure by using a cylinder, and When the reel body is normally stopped and clamped, the minimum cylinder capacity required for the clamp can be used to reduce the impact when the reel stops, and when the rotating reel body overruns due to an unexpected accident, the impact on the rotating reel body can be alleviated. This enables mechanical stopping, and has the effect of suppressing the reaction force at the initial stage of a collision.

[Brief explanation of drawings]

FIG. 1 schematically shows a conventional carousel type reel, in which a is a front view, b is a plan view, c is a view taken along the line AA of a, and FIG. 2 a is a carousel type reel according to the present invention. FIG. 2b is a sectional view taken along line BB in FIG. 2a, and FIG. 2c is an enlarged sectional view showing the cylinder in FIG. 2a. . In the drawing, 1 is the rotating reel body, 2a and 2b
is a reel shaft, 3a and 3b are support rollers, 4 is a girth gear, 8 is a base, 11a is a stop piece, 11b
120 is a clamping tongue, 120 is a stop device, 121 is a stopper arm, 122 is a cylinder, 123a and 123b are rods, 130 is a clamp device,
131 is a stopper arm, and 132 is a cylinder.

Claims (1)

[Claims] 1. A rotary reel body having a plurality of reel shafts arranged at symmetrical positions with respect to the central axis and each rotatably supported, and a rotary reel body having holes formed on the outer circumferential surface of the rotary reel body at symmetrical positions with respect to the rotational central axis of the rotary reel body. In a carousel type reel comprising two sets of tongue-shaped stop pieces and clamp tongue pieces, and a stopper that engages with the stop pieces and the clamp tongue pieces, each stopper arm is connected to a fluid cylinder for the stopper and a stopper for the clamp. A stopping device and a clamping device for a carousel type reel, characterized in that the stopping device and the clamping device are operated by a fluid cylinder, and the stopper fluid cylinder has a double cylinder structure, and a predetermined gap is provided between the piston rods of the double cylinder structure.