KR20060075287A - Apparatus for cutting bad tail of a strip in the run out table - Google Patents

Abstract

The present invention relates to a bad tail strip cutting device of a runout table.

The present invention relates to a runout table, a sensor disposed at both front ends of the runout table and detecting a defect of a strip moving along the runout table surface, and disposed at a predetermined interval on the sensor and arranged on the lower surface and the lower surface of the strip. A lower / upper strip assembly supporting the knife assembly, a knife assembly which cuts the strip while being moved by the winding wire while the knife is mounted on the knife block, and a plurality of actuators, and cuts the defective strip tail portion to wind up the winding machine. It is possible to fundamentally prevent the bad tail from being blown into the roll.

Table, Sensor, Strip Assembly, Knife Assembly, Actuator

Description

Apparatus for cutting bad tail of a strip in the run out table}

1 is a state diagram illustrating a situation where a bad tail is generated on a conventional runout table;

2 is a block diagram of a bad tail strip cutting device according to the present invention,

3 is a schematic configuration diagram illustrating a strip cutting device according to the present invention;

(a) shows the lower strip assembly,

(b) shows an upper strip assembly and a knife assembly;

(c) is a schematic diagram of a knife assembly is combined,

4 is an operation state of the upper strip assembly of the strip cutting device,

5 is a state diagram in which the strip cutting device supports the strip;

(a) is a state diagram immediately before supporting the strip,

(b) is a state diagram immediately after supporting the strip,

6 is a view illustrating a state in which a knife of a strip cutting device cuts a strip;

7 is a diagram illustrating a knife traveling direction and a cutting direction of the strip cutting device.

Explanation of symbols on the main parts of the drawings

10: Runout Table 12: Swing Runout Table

14 strip 16: sensor                 

18: winding machine 20: lower strip assembly

22: lower frame 24: guide roll

26: strip guide plate 28: the first actuator

30: upper strip assembly 32: upper frame

34: guide roll 36: strip guide plate

38: guide shaft 40: universal shaft

42: second actuator 44: third actuator

50: knife assembly 52: knife

54: Knife Block 56: Knife Guide

58: winding wire 60: pulley

62: reel winch 64: acceleration / deceleration motor

The present invention relates to a device for cutting a bad tail strip of a runout table, and in particular, to cut a bad tail strip of a runout table that can cut hot rolled coils in a steel mill so that a tail roll does not occur on the roll and the surface in the final winding stage of the production process Relates to a device.

In general, the process of producing hot rolled coils is that the rolled strip in finishing is lowered to a constant temperature in a run out table (ROT) and then guided between the upper and lower pinchers of the winder, and the pinch roll is a unit roll and a mandrel. Produced by winding in the form of hot rolled coil.

In the related art, as shown in FIG. 1, the strip 112 of the coil product 110 on the runout table 100 is twisted or enters the winder 120 in a fishtail state, thereby pinching the winder 120. The tail piece was blown in the roll 122, the unit roll 124, and the mandrel 126, or the foreign matter (mark) of the twisted form was left in some cases.

However, the conventional runout table 100 is not provided with a device for cutting the defective tail, so that every time a tail piece and roll mark blown into the pinch roll 122 and the unit roll 124 of the winder 120 are generated. Loss of time and money was generated by sandpaper or grinding wheel of the imported material, and even if the sandpaper or grinding wheel processing could not be completely recovered, the worker was injured due to the malfunction of the winding machine 120. As a result, the rolling production is delayed and also adversely affects the quality of the rolled products.

Accordingly, the present invention has been made in order to solve the above-described problems, even if the tail portion of the rolled strip is twisted or rolled in a fish tail state, it is wound on a winder and is cut on the runout table to generate miss rolls or roll marks. It is an object of the present invention to provide a bad tail strip cutting device for a runout table which can be prevented and the worker can work safely.

In order to achieve the above object, the present invention provides a runout table, a sensor disposed at both front ends of the runout table and detecting a defect of a strip moving along the surface of the runout table, and arranged at a predetermined distance to the sensor. A lower strip assembly supporting the lower surface of the strip, an upper strip assembly disposed corresponding to the lower strip support bay portion and supporting the upper surface of the strip, and installed between the upper strip assembly and the lower strip assembly and having a knife The mounted knife frame is supported by the winding wire to wind or unwind the winding wire so that the knife is cut along the strip, the first and second actuators for operating the strip guide plate and the knife guide, and the winding wire. Including wire drive means for moving knife block .

According to the bad tail strip cutting device for a runout table according to the present invention, by cutting the bad tail of the strip on the runout table it is possible to fundamentally block the bad tail is blown into the roll of the winder.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

2 is a block diagram of a bad tail strip cutting device according to the present invention, Figure 3 is a schematic exploded view of the strip cutting device according to the present invention.

The defective tail strip cutting device of the runout table according to the present invention, as illustrated in FIGS. 2 and 3, detects a defect of the runout table 10 and the strip 14 moving along the surface of the runout table 10. The sensor 16, the lower and upper strip assemblies 20 and 30 which are spaced apart from the sensor 16 and which support the lower and lower surfaces of the strip 14, and the knife 52 are knives 52 It consists of the knife assembly 50 which cuts the strip 14, moving by the winding wire 58 in the state attached to the block 54. As shown in FIG. Here, the lower and upper strip assemblies 20 and 30 and the knife assembly 50 are inclined at a predetermined angle with respect to the conveying direction of the strip 14.

The runout table 10 has a swing runout table 12 at the center thereof, and a pair of sensors 16 for detecting a defect of the strip 14 at the front side thereof, and a winding machine 18 at the rear side thereof. Is arranged.

The swing runout table 12 is hinged to one side of the runout table 10, and the lifting cylinders 13 are mounted at both ends thereof. Therefore, the swing runout table 10 is configured to rotate with a certain radius of rotation from the ground when the elevating cylinder 13 is operated.

The sensor 16 is configured to detect flatness on the surface of the strip 14 disposed on the runout table 10. Here, when the sensor 16 detects a bad tail of the strip 14, the knife assembly 50 moves while the lower / upper strip assemblies 20 and 30 are in close contact with the surface of the strip 14. Is to cut the bad tail of the strip (14).

As shown in FIG. 3A, the lower strip assembly 20 includes a lower frame 22 and a plurality of guide rolls 24 seated on the lower frame 22 and in contact with the lower surface of the strip 14. It consists of the strip guide plate 26 provided. A pair of first actuators 28 are installed at the bottom of the lower frame 22 to raise and lower the strip guide plate 26.

The upper strip assembly 30, as shown in Figure 3b, the upper frame 32 and a plurality of guide rolls 34 mounted to the lower portion of the upper frame 32 and in contact with the upper surface of the strip 14 It is composed of a pair of strip guide plate 36 having a) and a guide shaft 38 provided on the upper frame 32 so as to be movable from side to side.

The upper frame 32 has a substantially c-shape so that the strip guide plate 36 and the knife assembly 50 are inserted therein, and both ends of the upper frame 32 are supported by the support part 32a so as to be movable in a horizontal direction. The shaft 38 is provided. 5A and 5B, one end is hinged to the guide shaft 38 and the other end is fixed to the knife guide 56 while penetrating the upper frame 32. 40) is installed. In addition, the second actuator 42 is installed in the upper frame 32, the shaft end is coupled to the guide shaft 38. Therefore, as the second actuator 42 operates, as shown in FIG. 4, the guide shaft 38 moves in the left direction, and the universal shaft 40 is raised to the knife guide with respect to the upper frame 32. It is supposed to lower 56.

Meanwhile, as shown in FIG. 2, the upper strip assembly 30 is lifted up and down by the third actuator 44.

3B and 3C, the knife assembly 50 includes a knife block 54 provided with a knife 52, a knife guide 56 for guiding the knife block 54, and the knife. The winding wire 58 which supports the block 54 is comprised.

As shown in FIG. 6, the knife 52 is configured to cut the strip 14 while engaging the strip 14 with a pair of upper and lower cutters 52a and 52b in front. Here, as shown in Fig. 7, the knife 52 is inclined at a predetermined angle in the strip traveling direction so that the knife 52 moves in the inclined direction. This is so that the cutting direction of the knife 54 becomes the vertical direction of the strip 14 in consideration of the speed of the moving strip 14.

The knife block 54 is fixedly supported by the winding wire 58 to move along the knife guide 56 as the winding wire 58 is wound.

On the other hand, the wire driving means is a reel winch 62 and the speed of the reel winch 62 to wrap the winding wire 58 in the opposite direction of the pulley 60 and the pulley 60 to change the direction of the winding wire (58). It consists of the acceleration / deceleration motor 64 which varies.

Hereinafter, the operation of the bad tail strip cutting device of the runout table according to the present invention will be described with reference to FIGS.

As shown in FIG. 2, when the strip no cut or the bad rolling property is poor in the rolling process, the sensor 16 detects the flatness of the strip 14 so that a bad strip tail signal is transmitted to the strip cutting device. Transmitted to cut the strip tail portion defective portion.

When the traveling strip 14 passes through the runout table 10, the strip guide plate 26 is raised as the first actuator 42 is operated by the signal of the sensor 16, and the second actuator ( As the 44 is operated, the knife guide 56 is lowered so that the strip guide plates 26 and 36 press the strip 14 to a constant pressure. At this time, the strip 14 is stably maintained, such as flow or vibration shock during the up and down, left and right rolling of the strip in a continuous state. At the same time, the knife 52 coincides with the face of the strip 14 as in FIG. 5B.

Subsequently, when rotating according to the traveling speed of the strip 14 with the acceleration / deceleration motor 64, the winch reel 62 is driven accordingly, and one side of the winding wire 58 is wound on the winch reel 62 while the other As the side is released, the winding wire 58 is moved. At this time, the knife block 54 fixed to the winding wire 58 moves together with the winding wire 58, and at the same time, the upper and lower cutters 52a and 52b of the knife 52 installed on the knife block 54 are separated from the strip 14. The strip is cut as it is engaged and rotated.

The cut strip 14 tail portion is divided from the most strip, and the ongoing strip is wound around the winder 18, in which the swing runout table 12 swings by the lowering cylinder 13 As one end rises and the scrap inlet is opened, the defective strip tail portion that follows is dropped into the scrap box installed at the bottom of the runout table 10.

According to the bad tail strip cutting device according to the present invention as described above, in the process of producing a hot rolled coil by rolling in a hot state in a steel mill, the bad tail is blown to the roll of the winder by cutting the bad strip tail portion It can be blocked fundamentally. In addition, as described above, the miss roll is generated, thereby preventing the rolling operation from being interrupted according to the miss roll treatment.

Claims (5)

Runout table, Sensors disposed at both front ends of the runout table to detect a defect of a strip moving along the runout table surface; A lower strip assembly disposed at the sensor at a predetermined interval, the lower strip assembly including a lower guide plate and a strip guide plate mounted on the lower frame and having a plurality of guide rolls contacting the lower surface of the strip; A strip guide plate disposed corresponding to the lower strip assembly and having a top guide, a plurality of guide rolls mounted under the top frame and in contact with the top surface of the strip; A lower strip assembly composed of guide shafts, A knife assembly installed between the lower strip assembly and the upper strip assembly, the knife block having a knife installed thereon, a knife guide for guiding the knife block, and a winding wire fixedly supporting the knife block; First and second actuators for operating the strip guide plate and the knife guide respectively; The apparatus for cutting a bad tail strip of a runout table including a wire driving means for winding the winding wire to move the knife block. According to claim 1, wherein the runout table is provided with a swing runout table in the center, the swing runout table is hinged to one side with respect to the runout table and the lifting cylinder is mounted on both ends, the lifting cylinder is operated The bad tail strip cutting device of the runout table, characterized in that the lower surface rotates with a certain radius of rotation from the ground. The apparatus of claim 1, further comprising a third actuator for elevating the upper strip assembly with respect to the ground. The apparatus of claim 1, wherein the knife of the knife assembly is inclined at a predetermined angle in the strip traveling direction in consideration of the speed of the strip so that the cutting direction is perpendicular to the strip. The runout according to claim 1, wherein the wire driving means comprises a pulley for changing the direction of the winding wire, a reel winch surrounding the winding wire in a direction opposite to the pulley, and an acceleration / deceleration motor that varies the speed of the reel winch. Bad tail strip cutting device on the table.

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