JPH0638564Y2 - Steel strip edge brushing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a brushing device for a steel strip edge provided in a front stage of an atmosphere annealing furnace.

<Prior Art> For example, a stainless steel strip is cold-rolled and then bright-annealed in an atmosphere such as AX gas. At the entrance and exit of the atmosphere annealing furnace, a sealing device such as felt is usually provided to seal the atmosphere gas.

On the other hand, small steel pieces may be attached to the edge of the cold rolled steel strip due to edge cracks generated during rolling, and if these are caught by the furnace port seal and caught in felt etc. Scratches occur on the surface.

Therefore, conventionally, the foreign matter was removed by the upper and lower brush rolls provided in the degreasing tank after cold rolling, but it was still insufficient, and scratches were often generated.

<Problems to be Solved by the Invention> The present invention provides a steel strip edge brushing device that prevents the occurrence of scratches when passing a cold-rolled steel sheet through an annealing furnace.

<Means for Solving the Problem> The inventors of the present invention have studied in detail the cause of scratches, and as a result, small steel pieces produced during rolling often adhere to both edges of the steel sheet. The inventors of the present invention have determined that this is the cause of defects and have reached the present invention.

That is, the present invention is a steel strip edge brushing device provided in the preceding stage of an atmosphere annealing furnace for annealing a cold rolled steel strip, and runs along a fixed frame that is proud of in the width direction of the steel strip running line. A pair of trolleys is provided, a oscillating frame oscillating in the width direction of the steel strip is hung on each trolley via an oscillating shaft, and the oscillating frame is oscillated by a pin coupled to the trolley. A brush roll which is connected to the moving cylinder and is rotationally driven on the rocking frame in contact with the edge of the steel strip; a drive motor for the brush roll; and the position of the rocking frame on the edge of the steel strip. A control device provided with a guide roller having a position adjusting motor for adjusting along with it, and controlling the distance between the guide roller and the brush roll by the position adjusting motor according to the load current of the drive motor of the brush roll. The provided, and a brushing apparatus of the strip edges, characterized in that a dust collecting apparatus having a dust collecting hood covering the brush roll.

<Operation> The configuration of the present invention will be described with reference to the drawings.

FIG. 1 is a partial side view showing an embodiment of the present invention, FIG. 2 is a view taken along the line X--X in FIG. 3, FIG. 3 is a plan view, and FIG. 4 uses the device of the present invention. It is explanatory drawing of the whole line.

As shown in FIG. 4, in order to solve the above-mentioned problems, the present invention is a steel strip edge brushing device provided in a preceding stage of an atmosphere annealing furnace for cold rolled steel strips, which is a traveling steel strip 1
A pair of carriages 4 that travel along a fixed frame 3 that extends in the width direction, a swing frame 5 that swings in the width direction of the steel plate on each of the carriages via a swing axis A, and the swing thereof. On the frame, a brush roll drive motor 6 rotates the brush roll 2 in contact with the steel strip 1 via a synchro belt 7 and a guide roller position adjusting motor 17 drives a drive chain 18 to adjust the guide roller position. A guide roller 15 for setting the widthwise position of the steel strip 1 along the screw shaft 16, a dust collecting hood 21 for covering the brush roll 2 in a U shape, and a load current of a brush roll drive motor. A control device 9 for controlling the guide roller position adjusting motor 17 is provided. The entire swing frame 5 is connected to a swing cylinder 8 which is pin-connected at 23 to a bracket 22 derived from the truck 4.

Since the width w of the steel strip 1 is different, a pair of guide rollers
The steel strip 1 is guided by 15, 15 and a pair of brush rolls 2, 2 driven to rotate in that state are formed on both edge surfaces E of the steel strip 1.
The foreign matter such as small steel pieces that comes into contact with and adheres to the end surface is removed and sucked out of the line by the dust collector 20.

Further, the relative positions of the brush roll 2 and the guide roller 15 are controlled so that the brush roll is on the inner side of the line. Its relative position is preferably (about 1-2 mm),
The load current 10 of the brush roll drive motor 6 is detected,
The position of the guide roller 15 is adjusted by driving the guide roller position adjusting motor 17 so that the detected current is in the range of the set value current 11.

In order to easily swing the swing frame 5, a counterweight 19 may be provided at the tip of the swing frame 5.

Next, the operation of the device of the present invention will be described.

First, the cold-rolled steel strip 1 is rewound from the payoff reel 12 as shown in FIG. The devised device 13 removes foreign substances attached to both edge surfaces and introduces them into the atmosphere annealing furnace 30, where they are annealed and tension reels are used.
It is rolled up to 14.

In the steel strip edge brushing device 13 of the present invention, the position of the carriage 4 in the plate width direction is set according to the plate width w.

Next, the guide roller is adjusted by the guide roller position adjusting motor 17 so that the circumferential surface of the brush roll 2 is projected inward by about 1 to 2 mm from the guide surface of the guide roller 15. In this state, the position of the carriage 4 in the plate width direction is determined, and the swing frame 5 is positioned by the swing cylinder 8 so that the guide rollers 15 substantially contact both edge surfaces of the steel strip 1.

When the brush roll drive motor 6 is driven in the above-described state, both brush rolls 2 are rotationally driven through the synchro belt 7 to remove foreign matters attached to both edge surfaces of the running steel strip 1. It is then discharged through the dust collection hood to the outside of the line. The brush roll is made of a nylon brush or the like, but is gradually worn. Therefore, the load current of the drive motor 6 of the brush roll 2 is detected and compared with the set value current 11, and the controller is adjusted according to the deviation. The motor for adjusting the guide roll position is driven by 9 and the drive chain 18
The position of the guide roller 15 in the width direction is controlled via the adjusting screw shaft.

The swing cylinder 8 is composed of an air cylinder,
The vibration of the rocking frame 5 can be gently absorbed with respect to the vibration of the width of the steel strip.

<Effect of device> According to the device of the present invention, foreign matters such as small pieces of steel adhering to both edge surfaces of the steel strip can be effectively removed during cold rolling, so that the occurrence rate of scratches at the inlet of the subsequent atmosphere annealing furnace can be improved. Was able to be drastically reduced.

[Brief description of drawings]

1 is a front view of the right half of the device of the present invention when the steel strip 1 is running in the front direction, FIG. 2 is a view taken along the line XX in FIG. 3, and FIG. 3 is a block schematic diagram of the present invention. FIG. 4 shows an application example of the device of the present invention in relation to an atmosphere annealing furnace. A ... rocking shaft, 1 ... steel strip, 2 ... brush roll, 3 ... fixed frame, 4 ... truck, 5 ... rocking frame, 6 ... brush roll drive motor, 7 ... synchro belt, 8 ... rocking cylinder, 9 … Control device, 10… Load current, 11… Set value current, 12… Payoff reel, 13… Steel strip edge brushing device, 14… Tension reel, 15… Guide roller, 16… Guide roller adjusting screw shaft, 17… Guide Roller position adjusting motor, 18… Drive chain, 19… Counter weight, 20… Dust collector, 21… Dust collecting hood, 30… Atmosphere annealing furnace.

Claims (1)

[Scope of utility model registration request] 1. A brushing device for a steel strip edge provided in a front stage of an atmosphere annealing furnace for annealing a cold-rolled steel strip, the pair of strips traveling along a fixed frame that is proud in the width direction of the strip running line. Each of the carts is provided with a rocking frame that rocks in the width direction of the steel strip, suspended through a rocking shaft, and the rocking frame is rocked by a pin connected to the cart. A brush roll connected to the cylinder and driven to rotate on the swing frame in contact with the edge of the steel strip, a drive motor for the brush roll, and the position of the swing frame along the edge of the steel strip. And a control device for controlling the distance between the guide roller and the brush roll by the position adjusting motor according to the load current of the drive motor of the brush roll. And brushing apparatus of the strip edges, characterized in that a dust collecting apparatus having a dust collecting hood covering the brush roll.