KR101105914B1 - Apparatus for removing deformity portion of the hot rolled strip - Google Patents

Abstract

According to the present invention, when the stainless strip is rolled in a hot rolling mill, the cam and the top portion and the end portion are not rolled in a straight direction due to the temperature deviation of the slab, but the cam bar is rolled in a somewhat irregular curved shape. In the annealing pickling plant, there is a problem in that the productivity of the scrap is reduced because the processing time of the scrap is long in cutting the top and the end portions in order to prevent the tip of the strip during threading and to prevent the telescope of the inner winding portion when winding. In order to solve this problem, the present invention is a device to facilitate the scrap processing by making a two-stage table.

Cambar, Upper Table, Lower Table, Cylinder

Description

Defect removal device of hot rolled strips {APPARATUS FOR REMOVING DEFORMITY PORTION OF THE HOT ROLLED STRIP}             

1 is a block diagram of a general scrap processing apparatus;

2 is a perspective view showing a defect removal device of a hot rolled strip according to the present invention;

3 is a perspective view showing a state in which the removal device shown in FIG. 2 is operated after removing the cam bar of the hot rolled strip;

4 is a perspective view showing an apparatus for treating a cam bar portion cut in a hot rolled strip;

5 is a front view showing a state before removing the cam bar portion from the hot rolled strip;

Figure 6 is a front view showing a state after removing the cam bar portion from the hot rolled strip.

Description of the Related Art

21: steel table roll

22, 32: table roll bearing block

23-1, 23-2: side cylinder

24: bearing block protective cover

25: table roll drive motor

31: Luba table roll                 

33: table gear cylinder

40, 41: sensor bar

42-1, 42-2: Sensor bar adjustment screw

43: sensor bar drive motor

44, 45: light sensor

46: sensor bar support

100: strip

100-1: Scrap Cambar

110: shaa cutting device

150: scrap box

160: fixed threading table

A: detector

B: upper table

C: lower table

The present invention relates to an apparatus for removing defects or irregularities in the top and end portions of strips when uncoiling and threading hot rolled strip coils for secondary processing of rolled strip coils in a hot rolling mill. The present invention relates to a device for removing defects such as cambars, telescopes, and ears that occur in the strip top part or the end part due to slab temperature deviation or poor control when rolling in a hot rolling mill.

In general, the slabs are hot rolled in strip form in a hot rolling process and then wound in coil form. This hot rolled coil is unwound for secondary processing as needed. On the other hand, when the slab is hot-rolled in a hot rolling process, defects such as cam bars, telescopes, eyelets, etc. are generated at the top and end portions of the strip due to temperature deviation or poor control. The cam bar is mainly a defective portion generated within 10 meters from the top portion or the end portion.

At this time, when the cam bar appears as a relatively short defect portion of about 5 meters or less from the top portion or the end portion, the cam bar is continuously cut out by the shar cutting device and treated with shar scrap. If the cam bar appears as a defective portion of 5 meters or more and 10 meters or less from the top portion or the end portion, it is removed by the vacuum hoist on the threading table after being cut by the share cutting device.

Referring to FIG. 1, the strip coil wound after hot rolling is uncoiled from the uncoiler device 140 for secondary processing, and at this time, the top portion of the strip 100 is pinched by the filler table 120. Is induced. Then, if the diver table 14 is up, the thread cutting device is threaded up to the char cutting device 110, and the defect portion formed at the top portion of the strip 100 is cut and processed into the strip scrap 100-1. That is, after cutting into the strip scrap 100-1, the divert table 14 is down and the strip 100 is threaded to the table device 10 to complete the threading operation.

However, in the conventional coil preparation line, the threading operation on the strip is delayed during strip scrap processing, thereby reducing the efficiency and productivity of the strip. In particular, in the continuous line, the delaying of the threading operation directly affects welding delay and quality. There is a problem.

The present invention has been proposed in order to solve the conventional problems as described above, when uncoiling a strip coil mounted on an uncoiler device, the strip is a table device while treating a defect formed in the top or end portion of the strip with a scrap. The upper table handles scrap and the lower table serves as a threading table by using a two-stage table that moves up and down so that the threading time can be delayed. It is an object of the present invention to provide an apparatus for removing defects of hot rolled strips.

In order to achieve the above object, according to the present invention, the apparatus for removing defects of a hot rolled strip includes: a cutting device for cutting the strip, and a first table on which the cutting part cut by the cutting device is seated; A second table positioned to be connected to a lower portion of the first table; It is characterized by consisting of a lifting member for lifting up and down the second table.

Preferably, the second table and the first table are connected by a cylinder.

The apparatus for removing defects of the hot rolled strip further includes a detector for detecting the strip passing through the cutting device.

Hereinafter, with reference to the accompanying drawings will be described a configuration of a defect removal device of a hot rolled strip according to the present invention.

First, the hot rolled and wound hot rolled coil is unwound into strips in an uncoiling apparatus, and these strips proceed for secondary processing.

At this time, the defect removal device of the hot rolled strip according to the present invention has a shaar cutting device 110 for cutting the strip 100 passing through, as shown in FIG. Then, the strip 100 passing through the shaar cutting device 110 proceeds to the threading table 160 is fixed along the transport path.

An upper table B and a lower table C may be provided to be lowered and lowered between the shaar cutting device 110 and the fixed threading table 160. In addition, the upper part of the upper table (B) is provided with a sensing unit (A) for detecting the strip passing through the shaar cutting device (110). The shaa cutting device 110 performs a cutting operation when detecting the strip 100 through which the sensing unit A proceeds, in particular, the cam bar 100-1 of the strip top portion. The cam bar 100-1 cut from the strip 100 by the cutting operation of the shaar cutting device 110 is processed into scrap.                     

At this time, the sensing unit (A) for detecting the cam bar (100-1) of the strip is the drive side sensor bar 40 and the work side sensor bar 41 provided on the upper table (B) as shown in FIG. In addition, the drive side sensor bar 40 and the work side sensor bar 41 have drive side light sensors 44-1, 44-2, 44-3, 44-4, 44-5, 44-6, 44-. 7, 44-8, 44-9, 44-10, 44-11) and workside light sensors (45-1, 45-2, 45-3, 45-4, 45-5, 45-6, 45- 7, 45-8, 45-9, 45-10, 45-11) are installed at regular intervals along the length direction. The sensing unit A drives the sensor bar adjusting screws 42-1 and 42-2 for adjusting the distance between the sensor bars 40 and 41 and the adjusting screws 42-1 and 42-2. It further includes a drive motor 43 and a support 46 for supporting the sensor bars 40 and 41.

The upper table B includes upper table cylinders 23-1 and 23-2 located on both sides of the table, a bearing block 22 for rotatably supporting the steel table roll 21 on the table, and a bearing block ( It consists of a protective cover 24, an apron table 13, and a table roll driving motor 25 for protecting 22.

The lower table C is composed of a cylinder 33 mounted on a base (not shown) to move up and down, a table roll bearing block 32, a luba table roll 31, and an apron table 13.

Referring to the operation of the defect removal apparatus according to the present invention configured as described above are as follows.

The sensing unit A for sensing the cam bar 100-1 formed at the top of the strip 100 is supported by the sensor bar support 46, and the sensor bar adjusting screw is connected to the left screw portion 42-1 around the center. The right screw portion 42-2 is symmetrically configured and connected to the sensor bar drive motor 43. Then, the drive side sensor bar 40 is assembled to the sensor bar adjustment screw left screw portion 42-1, and the work side sensor bar 41 is assembled to the sensor bar adjustment screw right screw portion 42-2. The drive side optical sensor 44 is attached to the drive side sensor bar 40, and the work side optical sensor 45 is attached to the work side sensor 41 to detect the strip cam bar 100-1.

The light sensors 44 and 45 are assembled to the sensor bars 40 and 41, and are stripped by being moved symmetrically about the center by the sensor bar drive motor 43 and threaded according to the width of the strip 100. To match the width of.

Since the cam bar 100-1 is bent in the lengthwise direction of the strip 100, the cam bar 100-1 is driven by the drive side optical sensor 44-4 when the top portion of the threaded strip is threaded to the upper table A. 1 to 44-11 and the work side light sensor 45-1 to 45-11, the drive side light sensor 44-11 and the work side light sensor 45-11, which are close to the Shara cutting device 110, are simultaneously It is recognized as a part to be threaded until a detection signal is sent. Therefore, since the cam bar 100-1 is a part to be cut, the cam bar 100-1 is cut in the shaa cutting device 110.

Referring to the operation of the upper table (B), the scrap cam bar (100-1) cut by the shaar cutting device 110 is driven from the shaar cutting device 110 by driving the table roll driving motor (25). Then, by reducing the upper table drive side cylinder 23-1 and expanding the upper table work side cylinder 23-2, the upper table B is inclined toward the drive side and thereby on the steel table roll 21. Cam bar 100-1 is dropped into the scrap box 150.

Meanwhile, the drive side upper bearing block protective cover 24 prevents the bearing block from being damaged when the cam bar 100-1 slides down to the scrap box 150.

Referring to the operation of the lower table (C), when the hot rolled coil is unwound in the uncoiler device 140 so that the cam bar 100-1 of the strip 100 passes through the shar cutting device 110, the upper table ( B) the table device cylinder 33 is kept in a reduced state so that it is flush with the fixed threading table 160 so that the lower table C is located in the lower direction of the traveling direction of the strip 100.

When the strip cam bar 100-1 is cut in the shaa cutting device 110 and the table roll driving motor 25 is driven to separate the strip cam bar 100-1 from the shaa cutting device 110, the table device cylinder 33 immediately expands so that the lower table C is flush with the fixed threading table 160 so that the strip 100 from which the defective portion, ie the cam bar 100-1 has been removed, is quickly threaded.

That is, when the strip coil 100 is completely mounted to the uncoiler device 140, the operation in which the sensor bars 40 and 41 are opened or narrowed by the sensor bar driving motor 43 by the width of the mounted strip is performed. ) Before the thread is threaded.

The strip coil 100 is guided to the pinch roll device 120 by the filler table 130, and the strip 100 is threaded by the pinch roll device 120 and the uncoiler device 140. do. When the top portion of the strip 100 passes through the shar cutting device 110 and enters the sensing region of the sensing unit A, the drive side optical sensors 44-1 to 44-11 and the work side optical sensors 45-1 to 45-11 each begin to sense the edge of the strip 100. The uncoiler device 140, the pinch roll device 120, and the table roll drive motor 25 interlock with each other until the drive side light sensor and the work side light sensor transmit sensing signals at the same time. Ding.

However, even though the cam bar portion is too long, the top of the strip 100 detects either one of the drive optical sensor 44-1 and the work side optical sensor 45-1. If two side light sensors 45-11 are not detected at the same time, the strip threading is stopped once and the shar cutting device 110 is operated to generate one strip cam bar 100-1.

By repeating the above operation, the cam bar portion may be completely removed, or the defective portion such as the ear 100-2 found in the strip coil 100 appearance inspection process may be scraped even if the cam bar portion is not.

If the scrap is completely removed with a single scrap, the lower table C is raised by the operator's signal or automatic sequencing so that the table device cylinder 33 is extended and raised so that the height of the lower table C is the same as that of the fixed threading table 160. The strip 100 can be normally threaded.

When the strip 100 is completely uncoiled so that the end of the strip begins to escape from the uncoiler device 140, the sensing unit A is activated again. At this time, if the drive side light sensor 44-11 and the work side light sensor 45-11 do not detect one side of the cam cam bar, the strip is immediately stopped and the shaar cutting device 110 is reversed. It works.

After the shaar cutting device is operated, the strip 100 end part quickly exits the lower table C, and the table device cylinder 33 is reduced so that the lower table C and the upper table B are down. The cam bar 100-1 can be processed.

Processing of the strip cam bar 100-1 is carried out with the strip cam bar 100-1 cut and the strip 100 with the lower table C and the upper table B up by the expansion of the table device cylinder 33. You can take care of this at the time you normally thread.

When the table device cylinder 33 is expanded, the upper table drive side cylinder 23-1 is reduced, and the upper table work side cylinder 23-2 is expanded so that the upper table B is inclined to the drive side, so that the steel table roll The strip cam bar 100-1 which was on 21 is naturally dropped into the scrap box 150.

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 recognize that modifications and variations can be made to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. shall.

According to the present invention, since the scrap processing time can be zeroed in removing the cam bar portion or the defect portion of the top portion or the end portion of the strip coil, the productivity can be greatly improved.

Claims (3)

A cutting device for cutting the strip; A first table on which the cut portion cut by the cutting device is seated; A second table positioned to be connected to a lower portion of the first table; An elevating member for elevating the second table; And the second table and the first table are connected by a cylinder. delete The method of claim 1 The apparatus for removing a defect of a hot rolled strip further comprising a sensing unit for sensing the strip passing through the cutting device.

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