KR101118289B1 - Side guide apparatus having inclined-shaped roller - Google Patents

Abstract

An inclined roller attachment side guide device is disclosed. Such a side guide device is provided at a position adjacent to a rolling stand to provide a rolled material to a fixed position, and a roller rotatably provided at the housing side to prevent the generation of foreign matter or chips by rolling contact with the side of the material. Contains wealth. This side guide device is applied to the rear end of the finishing rolling by applying the side guide with two inclined rollers and one vertical roller to maximize the driving force of the roller to prevent the generation of foreign matter or chips generated during hot rolling, and also It prevents the edge cracks of the has the advantage that can be smooth rolling while promoting a high quality surface quality.

Hot rolled, rolled, roller, guide, slanted, vertical, material, looper

Description

Slope Roller Type Side Guide Device {SIDE GUIDE APPARATUS HAVING INCLINED-SHAPED ROLLER}

1 is a perspective view illustrating a process in which a raw material enters a rear stand through a side guide device after passing through a looper and rolls in a conventional filament mill front stand;

Figure 2a is a state diagram showing a state in which foreign matter and chips due to the friction between the side guide device and the material in conventional filamentary rolling, Figure 2b is a friction with the material when the side guide device is provided with a vertical roller State diagram showing a state in which foreign matter and chips are generated.

Figure 3 is a perspective view showing a process of finishing the raw material by the side guide device according to a preferred embodiment of the present invention.

4 is a plan view of FIG.

5 is a side view of FIG. 3;

FIG. 6 is a partial perspective view illustrating a process of removing foreign matter and chips from materials by the vertical and inclined rollers of the side guide device shown in FIG. 3. FIG.

Figure 7 (a) is a view showing the size of the moment arm of the driving force due to the friction between the inclined roller and the material shown in Figure 6, Figure 7 (b) is a view of the distance between the vertical roller and the material shown in Figure 6 Figure showing the size of the moment arm of the driving force due to friction.

The present invention relates to a side guide device for hot rolling, and more particularly, to include foreign materials and side guides due to friction between the material and the side guide during hot rolling by minimizing friction by rolling contact with the material by having an inclined roller and a vertical roller. It relates to a hot rolling side guide device that can prevent.

In general, the hot rolling process is to produce a hot rolled coil by making a material supplied from the heating furnace to a certain dimension and shape through a rolling process, and the rolled material undergoes a cooling and winding process.

This hot rolling process is to pass the material between the two rolls (Roll) to make the product of the desired dimensions and shape, it is difficult to make a thin material immediately thin, so gradually roll the material through rough rolling and finishing rolling do.

In the rough rolling, the bar is produced by adjusting and rolling to a thickness suitable for finishing rolling through a horizontal rolling mill, and also adjusting width through rolling.

In addition, after the rough rolling bar is cut by Crop Shear (Crop shear) is subjected to finishing rolling in order to finally roll to the customer ordered dimensions.

As shown in FIGS. 1 and 2 (a), the finishing rolling is generally performed by arranging six to seven rolling stands continuously and pressing and rolling a bar supplied from rough rolling by a roll. It will produce 25.4mm thick strips. In the finishing rolling, side guides 3 are provided at adjacent positions of the rolling stands 1 and 4 to guide the raw material S into the stands 1 and 4 through the correct positions.

In addition, the looper 2 is provided between the stands 1 and 4 to appropriately adjust the tension of the material inserted into the stands 1 and 4.

However, foreign materials and chips are generated at the contact portion 5 by friction between the side guide 3 and the material S in the process of passing the material S through the stands 1 and 4, The part press-fitted into the rolled material (S) and the foreign material and chips in the final product is impossible to use, causing a lot of quality and productivity constraints.

In addition, when the looper 2 moves up and down, the pass line of the material is also changed up and down, thereby making it difficult to achieve stable hot rolling.

Therefore, as shown in Fig. 2 (b), a method of rolling by attaching one vertical roller 6 to the side guide 3 inlet side has been taken.

In this case, however, the roller drive consists of the transfer of momentum due to friction between the material and the vertical roller, and the momentum is proportional to the material thickness and the speed of the material. There is a problem that can not drive the rollers due to the lack of material is impossible to enter large-scale accidents.

The present invention is to solve the above conventional problems, the object of the present invention is to provide an inclined roller and a vertical roller to minimize the friction force acting on the edge of the material by rolling contact with the material during hot rolling chip and foreign matter It is to provide a side guide device that can prevent the occurrence of.

Another object of the present invention is to provide a side guide device for rolling in a stable state by maintaining a constant pass line of the material even when the looper moves up and down.

In order to achieve the above object, the present invention provides a housing which is provided in the adjacent position of the rolling stand to supply the rolled material in place; It is rotatably provided on the side of the housing provides a hot rolled side guide device including a roller for preventing the generation of foreign matter or chips by rolling contact with the side of the material.

Hereinafter, with reference to the accompanying drawings will be described in detail the foreign material and chip removal apparatus using the inclined roller-attached side guide device according to a preferred embodiment of the present invention.

As shown in Figures 3 to 6, the side guide device 13 for removing foreign matter of the hot rolling line proposed by the present invention is disposed between the front stand 10 and the rear stand 11 by a rolling mill Foreign matter or chips are removed from the edge of the material (S) passing through.

At this time, the opening degree of the side guide device 13 installed on the front of the rear stand 11 during hot rolling, after the width S of the target material S is recognized by the calculator before entering the rear stand 11 It is set automatically with some margin for the material (S) width.                     

The side guide device 13 is provided with a housing 15 and a roller rotatably provided inside the housing 15 to prevent the generation of foreign matter or chips by rolling contact with the side of the strip S. It consists of a part (Roller Portion) 20.

In more detail, the housing 15 is disposed to surround the material S passing through the front and rear stands 10 and 11. Therefore, the material S having passed through the front stand 10 is guided to be inserted into the rear stand 11 at the correct position.

In addition, the rollers 20 are rotatably provided at both sides of the housing 15 to reduce frictional force with the material S. The roller unit 20 is composed of two inclined rollers 17 and 18 arranged on the inlet side of the housing 15 and a vertical roller 19 arranged on the outlet side.

Therefore, while the material S passes through the side guide device 13, the side surfaces of the material S are brought into contact with the inclined rollers 17, 18 and the vertical rollers 19 so that the frictional force is reduced and the foreign matter or chips And the like can be prevented from occurring.

The reason why the rollers are arranged as the inclined rollers 17 and 18 and the vertical rollers 19 is as follows.

That is, as shown in FIGS. 5 and 7A, at the rear end of the finishing rolling, after the material S enters the rear stand 11, in order to improve rollability due to the speed deviation of the front stand 10, a looper ( 12) will rise.

As the looper 12 is raised, the advancing direction of the material S rises at a predetermined angle with the housing 15 by the rise of the looper 12 at the inlet side of the side guide device 13, and the side guide is raised. On the exit side of the device 13, the housing S and the workpiece S are horizontal because the workpiece S is inserted into the rear stand.

Therefore, in order to maximize the momentum moment of the inclined and vertical rollers 19 to smoothly drive the rollers, the two inclined rollers 17 and 18 may be inclined at a predetermined angle to obtain a larger driving moment arm.

In addition, the vertical roller 19 is disposed perpendicular to the traveling direction of the material (S) by maintaining a vertical state with respect to the horizontal line 25 on the housing 15 can maximize the driving force of the roller.

And since the two inclined rollers 17 and 18 and one vertical roller 19 are arranged from the inlet side to the outlet side of the housing 15, the front end portion of the raw material S during hot rolling is the side guide device 13. To reduce the friction between the side guide device 13 and the material S until the rear end of the material S passes completely through the side guide device 13 to prevent foreign substances and chips during hot rolling and The edge crack of S) can be prevented.

Meanwhile, as described above, since the speeds of the rear stand 11 and the front stand 10 are controlled by individual motors during the rolling, a speed difference occurs, so that the looper 12 also corresponds to the stand 10 and 11 of the stand 10 and 11. Since the rolling trajectory of the material (S) is not constant but changes gradually in the vertical direction in response to the speed change, in this case, if the material (S) suddenly rises in the vertical direction, the material (S) is horizontal to the stand during rolling. It is impossible to enter into the case, the rolling property is bad.

Therefore, in order to prevent such a point, the inclined rollers 17 and 18 are tapered in the lower portion 23 (FIG. 7A) to prevent the material S from suddenly rising in the vertical direction, thereby smoothly rolling. can do.

As described above, the side guide device according to the preferred embodiment of the present invention is provided with two inclined rollers and one vertical roller to be applied to the rear end of the finishing rolling to maximize the driving force of the roller to generate foreign materials or chips during hot rolling. It is possible to prevent the occurrence, and also to prevent the edge cracks of the material there is an advantage that can be smooth rolling while achieving a high quality surface quality.

In addition, by forming a taper at the bottom of the inclined roller has a merit that the material can be rolled in a stable state by maintaining a constant pass line even during the vertical movement of the looper.

The present invention can be variously modified by those skilled in the art to which the present invention pertains without departing from the scope of the present invention as claimed in the claims, and is not limited to the specific preferred embodiments described above. .

Claims (3)

A housing provided at a rolling stand adjacent position to supply the rolled material to a proper position; Rotatably provided on the housing side to include a roller for preventing the generation of foreign matter or chips by rolling contact with the side of the material, The roller part consists of two inclined rollers and one vertical roller. Hot rolled side guide device. delete The method according to claim 1, The bottom surface of the inclined roller is a hot rolling side guide device having a tapered shape.

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