KR200215172Y1 - Apparatus for providing roop to prevent heat buckling in the annealing furnace - Google Patents

Abstract

The present invention provides a certain amount of loop in front of the annealing furnace to prevent the cold rolling coil inside the annealing furnace from buckling due to cooling when the annealing line for continuous annealing of the cold rolling coil is stopped. The present invention relates to an automatic loop applying device for preventing heat buckle in an annealing furnace, wherein a device mounted between the deflector roll and the seal roll in front of the annealing furnace to automatically provide a strip loop includes a rotation located between the deflector roll and the seal roll. A roll, a pair of supports for rotatably supporting both ends of the rotary roll, a pair of fixed base frames each mounted to allow the support to reciprocate along a horizontal direction, and the support to reciprocate in a horizontal direction It is composed of a power transmission means for moving, the support by the power transmission means the length of the fixed base frame When reciprocating along this direction, the rotary roll is reciprocated in conjunction with this to provide a strip loop between the deflector roll and the seal roll.

Description

Apparatus for providing roop to prevent heat buckling in the annealing furnace}

The present invention is a plate buckles in the cold rolled coil (buckle; hereinafter, 'buckle) due to the length and width shrinkage generated by the cooling of the hot cold rolled coil inside the annealing furnace when the annealing line in the annealing furnace for continuous annealing the cold rolled coil stops Ring ') phenomenon, and especially annealing furnace to prevent the cold rolling coil inside the annealing furnace from buckling due to cooling when the line stops in the annealing furnace. The present invention relates to an automatic loop applying device for preventing heat buckle inside an annealing furnace which provides a predetermined amount of loops in front.

Generally, a cold rolled coil (hereinafter referred to as a 'strip') is a product obtained by cold rolling a hot rolled coil at room temperature, and its surface is beautiful but its hardness is very high and ductile due to the high residual stress inside the strip generated during cold rolling. Since it is bad, it is difficult to process into the shape suitable for the use.

In order to solve this problem of the strip, heat treatment is performed. The heat treatment is a slow cooling operation after heating the strip above the recrystallization temperature, and the internal residual stress of the strip is eliminated, so that the material of the strip has a softness suitable for processing.

On the other hand, when the annealing operation is interrupted due to mechanical or electrical failures that may occur during continuous annealing operation, worker's work delay, material defects, etc., the hot strip inside the annealing furnace is cooled and contracted in the longitudinal direction and the width direction roll. As the tension applied to the strip hanging on the upper side increases, buckling or breakage occurs in the strip.

Therefore, in order to solve the problems as described above occurring during the interruption of the annealing operation, as shown in Fig. 1, to provide a certain amount of strip loop to compensate for the longitudinal shrinkage due to cooling of the strip. do. In this case, the operator will go to the site to urgently stop operation three times the tension bridle rolls; to rotate the roll so that the strip (C) by using a cell in the panel of the lever (tension bridle roll B ₁ to B _3). However, this loop does not go beyond the tension control unit, so that the strip is pushed between the tension bridle roll 3 and the tension control unit so that the operator can use the jig at the rear of the deflector roll D2. Give a loop while pulling.

As such, even if the annealing operation is stopped, the operation of applying a loop to the strip is a simple operation, and a lot of workers are put in, and the danger of safety accident due to the contact of the strip and the atmosphere leaking from the inside of the annealing furnace due to the high temperature There is a problem that the worker is exposed to the risk of safety accidents due to gas.

The present invention is devised to solve the conventional problems as described above, when performing the annealing heat treatment operation in the annealing furnace to make an annealing steel sheet made of cold-rolled coil strip material, due to the stop of the annealing line An object of the present invention is to provide a loop granting device that can effectively prevent the occurrence of buckling or breakage.

1 is a block diagram of a general annealing furnace.

Figure 2 is a view showing a loop applying operation inside the annealing furnace according to the prior embodiment.

3 is a block diagram showing a loop applying device according to an embodiment of the present invention.

4 is a view showing an operating state of the loop applying device according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: drive motor

2: chain gear

3: chain

7: fixed base

9: moving guide

R: Rotary Roll

In order to achieve the above object, according to the present invention, the deflector roll and the front part of the annealing furnace to automatically provide a strip loop to prevent the occurrence of buckling on the cold rolled steel strip inside the annealing furnace when the annealing line stops; The device mounted between the seal rolls includes a rotary roll positioned between the deflector roll and the seal roll, a pair of supports for rotatably supporting both ends of the rotary roll, and the support so that the support can be reciprocated along a horizontal direction. And a pair of fixed base frames, each of which is mounted, and a power transmission means for reciprocating the support in the horizontal direction, wherein the support is reciprocated along the longitudinal direction of the fixed base frame by the power transmission means. Interlock the strip roll to form a strip loop between the deflector roll and the seal roll. And it characterized in that.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

3 and 4, the automatic loop applying device for preventing heat buckle during the annealing furnace stop according to the present invention, the motor (1) as a power generating unit, the chain rotating shaft 10 for transmitting power, and the chain fixed shaft (50) ), Fixed bases 7A, 7B and guide rails 12, and guides 9A, 9B moving on the guide rails 12, and all power transfer is through the chain.

The power generated by the motor 1 rotates the chain gear 2A, and the chain gear 2A is inserted into a key groove machined inside the chain gear 2A to prevent separation. The washer was fixed to the end of the rotating shaft of the motor (1) with a fixing bolt.

The power transmitted to the chain 3A rotates the chain rotation shaft 10, and at this time, the chain gear 2B assembled to the chain rotation shaft 10 also has the same configuration as the chain gear 2A of the drive shaft of the motor 1. Are assembled.

The chain 3B is connected to transmit power to the chain fixed shaft 50 through the chain gear 2C, and the rear side of the chain rotating shaft 10 is assembled to the chain rotating shaft 10A for assembling the chain gear 2C. The gear 2C was assembled, the key was inserted, and then fixed with a fixing nut to prevent the chain gear 2C from falling off.

The connection between the chain rotation shaft is made through the spline gear and the chain rotation shaft is fixed to the fixed bases 7A and 7B by the bearing blocks 11A and 11b so that they can be driven simultaneously. As the chains 3A and 3B move, the guides 9A and 9B move left and right on the guide rails 12 installed on the fixed bases 7A and 7B. The guides 9A and 9B are guide rails 12. Shafts 6A and 6B were installed on guides 9A and 9B to prevent them from escaping.

The shafts 6A and 6B are assembled to the fixed bases 7A and 7B so that the keys are inserted into the key grooves so as not to rotate. Four bolts are assembled with washers to prevent the shafts 6A and 6B from coming off and the keys coming out.

The chain fixed shaft 50 is composed of two, and as the shaft rotates to fix the chain fixed shaft 50 with the fixed bearing blocks (4A, 4B), consisting of a bearing (30C) for smooth rotation, When the chain gear 2D is assembled with a key at the center of the chain fixing shaft 50, the chain gear 2D is fixed to the chain gear fixing bolts 25B on both sides to prevent the chain gear 2D from being separated.

The guides 9A and 9B moving on the guide rail 12 by the chains 3B and 3C are connected to the chains 3B and 3C. At this time, the chain ring is attached to the guides 9A and 9B, and is connected with the chains 3B and 3C and fixed with a chain pin. In order to prevent the chain pin from falling off, double the pin fixing plate and fasten the chain pin.

Referring back to FIG. 4, during normal line operation, the strip proceeds in the state indicated by the solid line. When the annealing furnace stops, as indicated by the imaginary line, the chain 3 is driven by the motor 1. When the power is transmitted, the guides 9A and 9B retreat backwards to generate a loop. When the guide moves backward, when the limit sensor touch bar 8C touches the limit sensor 8B, the driving of the motor 1 is stopped.

Subsequently, after a predetermined time, for example, 10 seconds, the motor 1 is again driven in reverse to advance the guides 9A and 9B so that when the limit sensor touch bar 8C touches the limit sensor 8A, the motor 1 ) Will stop running. Thus, it is configured to operate one cycle at line stop.

Permanently, a loop applying device for preventing a heat buckle during line stop during the continuous annealing operation of the cold rolled coil (strip) 1 is mounted between the deflector roll D2 and the seal roll S at the front of the annealing furnace.

First, as shown in FIG. 1, when the roll 17 of the rapid cooling section, which is an indicator of the operation of the annealing furnace, is stopped, the third roll TBR moves the strip C forward while rotating forward. Then, two seconds after the third roll TBR (B) is started, the drive motor 1 of the loop applying device according to the present invention operates.

The power generated by the motor 1 rotates the chain gear 2A along the axis of the motor 1, and the chain gear connected to the chain rotation shaft 10 while the chain 3A engaged with the chain gear 2A rotates. Rotate 2B). The chain rotation shaft 10 is rotated by the rotation of the chain gear 2B, and two chain gears 2C and 2E are connected to the chain rotation shaft 10 so that the chain rotation shaft 10 rotates at the same time. To rotate.

The guides 9A, 9B on the guide rails 12 attached to the fixed bases 7A, 7B are moved, and a loop is provided. At this time, the rotation roll (R) connected to the guide (9A, 9B) is subjected to a load while the strip (C) is caught, thereby causing the guide (9A, 9B) does not shake, and the shaft (6A) so that the linear motion , 6B) is fixedly installed.

Each chain 3B, 3C is connected to the chain gears 2C, 2E installed on the chain rotation shaft 10, and the chain fixing shaft in front of the fixed bases 7A, 7B so that the chains 3B, 3C can rotate. 50 is provided with bearing blocks 4A and 4B and bearings to smoothly rotate the chains 3B and 3C.

The guide 9A connected to the chain 3B is moved forward or backward according to the driving direction of the motor 1, and when the operation of the annealing furnace is stopped, the guide C moves to the position indicated by the virtual line of FIG. Will be dragged. At this time, the limit sensor touch bar 8C is mounted on the guide 9A to prevent excessive detachment, and when the limit sensor touch bar 8C moves backward to touch the limit sensor 8B, the driving motor 1 ) Powers off automatically.

On the other hand, after a predetermined time, for example, 10 seconds after the application of the loop, the motor 1 rotates right to transmit power to all the chain gears 2. The transmitted power moves all of the chain 3 and the guides 9A, 9B to return to their original positions. In addition, the limit sensor 8A is attached to the fixed base 7A to prevent excessive detachment of the guide so that the driving of the motor is stopped when the moving guide 9A and the limit sensor touch bar 8C touch the limit sensor 8A. Is stopped.

Summarizing the above, it is as follows.

That is, when the quench zone 17 roll, which is the master roll of the annealing furnace, stops, TBR (B) No. 3 rotates forward, and a loop of strip C is generated, and this loop generation part 3 TBR (B) and TCU It is stacked between (T). At this time, according to the present invention, the motor 1 for transmitting power rotates and pulls the loop of the strip.

When power is transmitted to the guides 9A and 9B, the guides 9A and 9B are moved back and forth in the rotational direction of the chains 3B and 3C while pulling or releasing the strip loop.

Therefore, according to the present invention, when the line operation is stopped artificially and indirectly due to failure of various equipments during annealing heat treatment in the annealing furnace, the loop of the strip is automatically provided to prevent plate shrinkage due to cooling of the strip. It is possible to prevent the occurrence of a problem due to the heat buckle, etc., which occurs when the machine is restarted.

The foregoing is merely illustrative of the preferred embodiments of the present invention, and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and spirit of the invention as set forth in the appended claims. It should be recognized.

Claims (4)

In the apparatus mounted between the deflector roll and the seal roll in the front of the annealing furnace to automatically provide a strip loop to prevent the buckling of the cold rolled steel strip inside the annealing furnace when the annealing line is stopped. A rotary roll positioned between the deflector roll and the seal roll; A pair of supports for rotatably supporting both ends of the rotary roll, A pair of fixed base frames each mounted to allow the support to reciprocate along a horizontal direction; Consists of a power transmission means for reciprocating the support in the horizontal direction, Annealing furnace characterized in that the support roll is reciprocated along the longitudinal direction of the fixed base frame by the power transmission means to provide a strip loop between the deflector roll and the seal roll while the rotary roll reciprocates. Loop applying device to prevent heat buckle at stop. The method of claim 1, The fixed base frame is equipped with a pair of limit sensors to limit the moving distance of the support, the support is equipped with a touch bar, while the support moves along the fixed base frame the touch bar is the limit sensor Heat buckle preventing loop applying device when the annealing furnace stops, characterized in that the movement of the support is stopped in contact with. The method of claim 2, A shaft is fixedly installed along the longitudinal direction of the fixed base frame, and the support is slidably mounted to the shaft to prevent the support from moving along the longitudinal direction of the fixed base frame from being separated from the fixed base frame. Loop buckle for preventing the heat buckle when the annealing furnace is stopped. The method of claim 3, After the annealing line of the annealing line stops and before the support moves along the fixed base frame, the tension bridle roll 3 located in front of the deflector roll of the annealing furnace is operated for a predetermined time. Loop buckle for preventing heat buckle when annealing furnace stops.