JP3456362B2 - Suction conveyor for quenched metal ribbon - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction type conveyor for a quenched metal ribbon, and more particularly to a suction type conveyor for a quenched metal ribbon that captures and conveys the quenched metal ribbon separated from a cooling roll and guides it to a winding device. Concerning the conveyor.

[0002]

As disclosed in Japanese Patent Laid-Open No. 6-182508, a molten metal is poured onto the surface of a cooling roll rotating at a high speed as a manufacturing method for stably mass-producing a quenched metal ribbon. After rapid cooling and solidification to form a metal ribbon, the metal ribbon is peeled off from the cooling roll, and then the metal ribbon is conveyed to a winding device and wound in a coil by the winding device. The strip of metal is stripped from the cooling roll by blowing a compressed gas in the direction, then the strip of metal is adsorbed by a suction type conveyor in the vicinity of this stripping point, and the strip of metal is held in this adsorbed state on the winding device side. There is known a method for manufacturing a metal ribbon, which is characterized in that the metal ribbon is conveyed to the. Further, in the publication, as an apparatus for carrying out the manufacturing method, there is provided a manufacturing apparatus for a metal ribbon having a cooling roll that rotates at high speed and a nozzle that guides the pouring of molten metal to the surface of the cooling roll, An air nozzle having a slit-shaped opening that blows out a compressed gas in the tangential direction of the cooling roll, and a suction type conveyor that conveys the thin strip peeled off from the cooling roll by the air nozzle in an adsorbed state, a metal that is arranged close to the cooling roll. A ribbon manufacturing facility is disclosed.

According to this, the metal ribbon which is rapidly cooled and solidified on the surface of the cooling roll is guided to the winding device without fluttering.

[0004]

However, according to the studies made by the present inventors, the belt (endless belt) wound around the entrance side and exit side rollers of the suction type conveyor is attracted to the outer surface of the belt. The heat input from the metal ribbon that is conveyed and the thermal expansion of the belt reduces the tension of the belt, which makes the rotation direction of the belt unstable and finally causes the metal ribbon to meander. Found to start.

As a conventional technique for preventing the meandering of a conveyor belt, a belt is supported by a wheel which is rotatably supported and rotatable so that its direction can be changed in a horizontal direction, and a belt meandering detection device and the above wheel are provided. A device that automatically corrects the meandering of the belt by mechanically connecting it through a rod (see JP-A-59-22806 and JP-A-59-22807), and a braking disc on the rollers. However, there is a device (see Japanese Patent Laid-Open No. 60-26518) for preventing the belt from meandering by automatically aligning the roller by utilizing the frictional force between the belt and the braking disc.

However, in the above-mentioned device, when the belt is thermally expanded and the belt tension is decreased, the pressing force against the wheel is decreased in the device, so that the centering force is not generated. Further, in the device, since the pressing force to the braking disc is reduced and the aligning force is reduced, the meandering prevention effect cannot be expected even when applied to a conveyor for transporting a quenched metal ribbon.

When the apparatus is applied to a manufacturing apparatus for a quenched metal ribbon, a conveyor for transporting the quenched metal ribbon is operated at a high speed (18
Since it is 00 mpm), there is also a problem that the number of rotations of the wheel increases and the seizure of the bearing easily occurs. As described above, in the conventional apparatus for producing a quenched metal ribbon, the problem that the belt of the suction type conveyor sometimes meanders due to thermal expansion remains unsolved.

An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a suction type conveyor used in an apparatus for producing a quenched metal ribbon, which is capable of suppressing meandering due to thermal expansion of the belt. It is to provide a suction type conveyor for use.

[0009]

MEANS FOR SOLVING THE PROBLEMS Molten metal is injected into a cooling roll that rotates at a high speed and rapidly solidified on the surface of the cooling roll to form a ribbon, which is peeled from the cooling roll and the peeled ribbon. Is a suction type conveyor used in a manufacturing apparatus for a quenched metal strip that is captured and conveyed by a suction type conveyor and guided to a winder, and is wound by the winder, and includes a pair of rolls and a roll. A support mechanism including an endless belt wound around and a suction box for adsorbing a thin band on the conveying surface of the endless belt, a bearing of one of the rolls is supported by a spherical seat, and the spherical seat has a spring. Is supported while receiving a spring force in a direction in which it separates from the other rolls.

According to the present invention, molten metal is injected into a cooling roll that rotates at a high speed and rapidly solidified on the surface of the cooling roll to form a ribbon. The ribbon is peeled from the cooling roll and the peeled ribbon. In a manufacturing apparatus for a quenched metal ribbon which is captured / conveyed by a suction conveyor, guided to a winder, and wound by the winder, a suction conveyor for the quenched metal ribbon is provided as a suction conveyor. It is an apparatus for manufacturing a quenched metal ribbon.

[0011]

1 is a plan view showing an embodiment of a suction type conveyor for a quenched metal ribbon according to the present invention.
(B) is a side view. 1, 1A is a pair of rolls (conveyor rolls), 2 is a frame (conveyor roll frame), 3 is a bearing, 3A is a spherical seat, 4 is a span adjusting bolt, 5 is a spring, 6 is a span adjusting nut, 7
Is a linear rod, 8 is a belt (endless belt), 9 is a linear bush, 10 is a suction box, 11 is a suction type conveyor for a quenched metal ribbon, 13 is a locking nut, 14 and 15 are washers, and A and B.
Is an arrow indicating the direction of movement. The rotation driving means for driving the rotation of the rolls 1 and 1A and the vacuum exhaust pump for exhausting the inside of the suction box 10 to create a vacuum are omitted.

FIG. 2 is a schematic side view showing an example of the apparatus for producing a quenched metal ribbon according to the present invention, in which 21 is a cooling roll, 22 is a nozzle, 23 is molten metal, 24 is a ribbon, and 25 is a ribbon. Is an air slit nozzle, 27 is a winder (winding reel), 28 is a pressing roll, P is a peeling point, and molten metal 23 is injected from a nozzle 22 to a cooling roll 21 that rotates at high speed.
It is rapidly solidified on the 21st surface to form a thin strip 24, and the thin strip 24 is cooled at an exfoliation point P by using an air slit nozzle 25.
The strips 24 are separated from the strip 21, and the strips 24 that have been stripped are captured and conveyed by the suction type conveyor 11 for the quenched metal strips, guided to the winding machine (winding reel) 27, and pressed by the pressing roll 28 to wind the winding machine. By winding with 27, a quenched metal ribbon is manufactured. Note that the same or corresponding portions as those in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 1, a suction type conveyor 11 for quenched metal ribbon of the present invention comprises a pair of rolls 1 and 1A, an endless belt 8 wound around the rolls 1 and 1A, and the endless belt. 8, a suction box 10 for adsorbing a thin strip (not shown in FIG. 1) on the transport surface, and a bearing 3 for one of the rolls (roll 1) is supported by a spherical seat 3A.
3A is supported by a support mechanism having a spring 5 while receiving a spring force in a direction away from the other roll (roll 1A). Although not shown, the endless belt 8
There are many small-diameter suction holes that exert a suction force on the thin ribbon on the transport surface.

The supporting mechanism of the spherical seat 3A will be described with reference to the example of FIG. 1. In this supporting mechanism, the spherical seat 3A is provided on the frame 2 and the linear bush 9 is fixed to the suction box 10.
It is supported by a linear rod 7 slidably engaged with, and a lock nut 13 is screwed into one end in the longitudinal direction, and two washers 14 and 15 are loosely fitted to the other end from there. One of the washers (washer 14) of the span adjustment bolt 4 in which the spring 5 is elastically interposed between the individual washers 14 and 15 and the span adjustment nut 6 is screwed to the othermost end side is attached to the frame 2 Other (washer 15)
Are fixed to the suction boxes 10 respectively. The spring 5 is mounted so that the span adjusting bolt 4 is wound therein.

Here, the spring constant of the spring 5 is appropriately selected (for example, 0.4 kgf / mm), and the span adjusting nut 6 is turned so that the spring 5 can freely extend and the washers 14, 15 are rotated.
By adjusting the span between them (that is, adjusting the span between the rolls 1 and 1A), the spherical seat 3A can be separated from the roll 1A via the linear rod 7 and the spring 5 that engage with the frame 2. It is supported while receiving a force (pushing force of the spring 5).

The procedure for adjusting the span between the rolls 1 and 1A is as follows. First, the span adjusting nut 6 is rotated to move in the direction A (leftward), and the frame 2 provided with the spherical seat 3A supporting the bearing 3 of the roll 1 is moved in direction B (rightward) to narrow the span. A belt 8 having no difference in line length in the width direction is attached. After installation, span adjustment nut 6
Rotate to move in the direction of B (to the right) and guide the frame 2 with the linear rod 7, and to the direction of A (to the left)
When the frame 2 is moved to, the belt tension of the frame 2 (initial tension;
For example, stop when the spring force balances with 30kgf). After that, the span adjusting nut 6 is further rotated to move it in the direction B (to the right) and keep it free.

In this state, the belt 8 is rotated and the suction box 10 is operated, and then the conveyance of the ribbon is started. Since the temperature of the belt 8 rises up to about 100 ° C during the conveyance of the ribbon,
Thermal expansion of the belt 8 occurs and the belt tension decreases. Then, since the spring force becomes larger than the belt tension,
The frame 2 moves in the direction A (leftward) while being guided by the linear rod 7 until the belt tension and the spring force are balanced. The belt 8 is made of Kepler, for example, and the amount of movement due to its thermal expansion is about 1 to 2 mm.

Here, the thermal expansion of the belt 8 does not always occur uniformly in the width direction. In such a case, the conveyor roll 1 will move in a non-parallel state with respect to the other conveyor roll 1A. However, since the bearing 3 of the conveyor roll 1 is supported by the frame 2 via the spherical seat 3A, no unreasonable force is applied to the frame 2 and the bearing 3 and the rotation of the roll 1 is not hindered. .

That is, even if thermal expansion occurs at the width end of the belt 8 and the belt 8 is partially stretched, the roll 1 instantaneously and smoothly follows the abutting portion of the stretched portion due to the spring force. Further reduction of the belt tension of the one-side stretched portion is suppressed, and heat is taken from the one-side stretched portion of the belt 8 so that the one-side stretched portion returns to the original line length (longitudinal line length). Thereby, the tension distribution (corresponding to the velocity distribution) in the width direction of the belt 8 is kept uniform again. Therefore, even if the widthwise speed difference that causes the meandering occurs, the speed difference is instantly eliminated.

As described above, in the suction type conveyor 11 for the quenched metal ribbon of the present invention, the roll 1 is tilted by the spring 5 so as to follow the one-sided extension of the belt 8, thereby causing the meandering due to the thermal extension of the belt 8. It can be effectively suppressed. Then, according to the apparatus for manufacturing a quenched metal ribbon (exemplified in FIG. 2) provided with the suction type conveyor 11 for the quenched metal ribbon, when the ribbon 24 is captured and conveyed from the peeling point P to the winder 27. Moreover, the meandering due to the thermal expansion of the belt 8 does not occur, and the quenched metal ribbon can be manufactured more stably than before.

[0021]

According to the present invention, the quenched metal ribbon is captured and
Since the meandering due to the thermal expansion of the belt of the suction conveyor to be conveyed can be effectively suppressed, the excellent effect is obtained that the quenched metal ribbon can be manufactured more stably.

[Brief description of drawings]

FIG. 1A is a plan view and FIG. 1B is a side view showing an embodiment of a suction type conveyor for a quenched metal ribbon according to the present invention.

FIG. 2 is a schematic side view showing an example of an apparatus for producing a quenched metal ribbon according to the present invention.

[Explanation of symbols]

1,1A roll (conveyor roll) 2 frames (conveyor roll frame) 3 bearings 3A spherical seat 4 span adjustment bolt 5 springs 6 Span adjustment nut 7 Linear rod 8 belts (endless belts) 9 Linear bush 10 suction box 11 Suction conveyor for quenched metal ribbon 13 Locking nut 14 and 15 washers 21 cooling roll 22 nozzles 23 Molten metal 24 ribbon 25 air slit nozzle 27 Winding machine (winding reel) 28 Pressing roll Arrows indicating the direction of movement A, B P peeling point

Continuation of front page (56) Reference JP-A-7-1091 (JP, A) JP-A-6-182508 (JP, A) JP-A-8-1286 (JP, A) JP-A-7-214251 (JP , A) JP 5-277672 (JP, A) JP 4-356338 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B22D 11/06 360 B22D 11/06 390 B22D 11/128

Claims (2)

(57) [Claims] 1. A molten metal is injected into a cooling roll that rotates at a high speed and rapidly solidified on the surface of the cooling roll to form a ribbon, the ribbon is peeled from the cooling roll, and the peeled ribbon is a suction type conveyor. It is a suction type conveyor used in an apparatus for manufacturing a quenched metal ribbon which is captured and conveyed by a guide to a winder and wound by the winder, and which is a pair of rolls and is wound around the rolls. An endless belt, and a suction box for adsorbing a thin strip on the conveying surface of the endless belt, a bearing of one of the rolls is supported by a spherical seat, and the spherical seat is supported by a support mechanism having a spring to support the roll. A suction type conveyor for rapidly cooling thin metal strips, which is supported while receiving a spring force in a direction away from the others. 2. A molten metal is injected into a cooling roll that rotates at a high speed and rapidly solidified on the surface of the cooling roll to form a ribbon, the ribbon is peeled from the cooling roll, and the peeled ribbon is a suction type conveyor. In a manufacturing apparatus for a quenched metal ribbon, which is captured and conveyed by a guide to a winder and wound by the winder,
An apparatus for producing a quenched metal ribbon, comprising the suction type conveyor for a quenched metal ribbon according to claim 1 as a suction conveyor.