KR200412881Y1 - Edge flattener roll and the equipment for remove side ends bending of sheet plate - Google Patents

Abstract

The present invention relates to an edge flattener device for eliminating side end bending of a sheet, and more particularly, a height installed on both supports of a straight type upper and lower edge flattener roll and the upper and lower edge flattener rolls. It is composed of an adjustable liner, which prevents linear bending defects that have occurred in conventional cold rolled steel sheets, and increases the height of the liner according to the material and thickness of the material, working conditions, and the degree of bending defects on the side. It is possible to freely adjust the edge flatner roll to maintain a constant pressure on the material to provide an edge flatner device that can more effectively eliminate the side end bending defects of the material.

Edge flattener roll, flank deflection, sheet metal

Description

Edge flattener roll and the equipment for remove side ends bending of sheet plate}

1 is a front schematic view of a conventional edge flattener roll installed in a prepainted line.

2 is a side schematic view of a conventional edge flatner roll installed on a color paint line;

3 is a front schematic view of an edge flattener roll of the present invention.

4 is a side schematic view of an edge flattener roll of the present invention.

<Code Description of Main Parts of Drawing>

10, 110. Upper edge flattener roll 20, 120. Lower edge flattener roll

100. Cold rolled steel sheet (material) 101. Shipboard bending defect

130. Nylon plate 30. Liner

The present invention relates to an edge flattener device for eliminating side end bending of a thin plate, and more particularly, a height-adjustable liner installed on both supports of a straight upper and lower edge flattener roll and the upper and lower edge flattener rolls. It is composed of (liner), and by this configuration, it is possible to prevent the linear bending defects that occurred in the conventional cold rolled steel sheet material, and to freely adjust the height of the liner according to the material and thickness of the material, working conditions, degree of side defects, A flattener device including an edge flattener roll that can more effectively eliminate side end bending defects of a material by maintaining a constant pressure on the material.

In general, a color coating line (CCL: Color Coating Line) is a line for producing a prepainted steel sheet by coating the primer and finish after the pretreatment of chromate or chromium-free type using a cold rolled steel sheet. Products produced in this way are generally used for building materials and home appliances. In this case, the final product is made only through cutting and processing processes as needed without a subsequent painting process. Therefore, in the case of general prepainted steel sheet, a thin plate of 1 mm or less is used as a material to facilitate processing.

When the material is put into the color coating line, the material wound in the coil state is used. In the case of the thin plate, when the impact or abnormal force is applied to the side part during the handling of the coil, a bent shape defect is likely to occur at the side end part. In particular, large forklifts or cranes are mainly used during the loading / unloading and transfer of coils. In this case, the load of the coils is concentrated on the inner and outer winding side ends of the coil, causing bending defects.

In the case of the material in which such defects occur, uniform coating is not performed due to the bending of the side end part in the coating process of the color coating line, which causes quality defects and damages the surface of the coating roll coated with urethane. Cause.

Therefore, it is necessary to smooth the bending of the side end by using the edge flatner roll in order to eliminate the bending defect of the side end.

Edge flatner rolls used in the related art are eccentric rolls whose both end diameters are larger than the center diameter, and are provided so as to be symmetrical upward and downward to apply pressure only to the side ends of the bent material.

However, in the case of a thin sheet material, when the edge flatner roll is applied, side bending defects are removed, but a linear bending defect parallel to the material traveling direction occurs at a portion where the diameter of the eccentric roll is changed.

This problem is very large when the material is less than 0.6mm thin plate causes a large increase in product defect rate. Therefore, there is an urgent need to improve the shape of the edge flatner roll and the device accordingly so that the edge flatner roll can be applied to the sheet material without the occurrence of secondary defects.

Therefore, in order to solve the problems as described above, to minimize the defect rate and increase the productivity, the present invention provides an improved shape of the edge flatner roll and a device thereof, thereby eliminating side end bending defects without the occurrence of secondary defects. Is the purpose.

In order to achieve the above object, the present invention is characterized by consisting of a linear upper and lower edge flattener roll and a height-adjustable liner (installer) is installed on both supports of the upper and lower edge flattener roll. do.

Referring to the configuration of the present invention based on the accompanying drawings as follows.

1 and 2 is a view schematically showing the structure of the edge flattener roll applied in the prior art, the cold rolled steel sheet 100 is a material between the upper edge flatner roll 110 and the lower edge flatner roll 120 As it passes, the bending defects at the side ends are eliminated.

In the case of the conventional edge flatner roll, the diameter of both side ends is larger than the diameter of the center part, so that a higher pressure may be applied to the side ends than when the roll is closed, as shown in FIG. In this case, the linear flexure 101 parallel to the traveling direction of the material is generated in the material contacting the boundary portion where the diameter of the edge flatner roll varies.

In addition, as shown in FIG. 2, as the gap between the lower edge flattener roll 120 and the material 100 increases when the roll closes, the linear deflection defect becomes larger as the pressure applied to the material 100 increases. Triggered.

Under the current basic working conditions, the gap between the upper edge flattener roll and the material is 1.5mm, and the distance between the lower edge flattener roll and the material is 3.5mm. This change results in different intervals, resulting in different degrees of linear curvature.

3 is a view showing a schematic structure of the edge flattener roll of the present invention, by changing the roll shape from a conventional eccentric roll to a straight roll (straight roll) of the cold rolled steel sheet 100 is the upper edge flattener roll ( While passing between 10) and the lower edge flatner roll 20, side bend defects can be eliminated and linear bend defects in the center of the material can be prevented.

In general, when the straight roll is applied, the pressure applied to the side end is smaller than that of the eccentric roll. Therefore, it is somewhat inefficient to remove the side end bending defects. The bending defect at the end can be effectively removed.

4 is a view schematically showing the application structure of the edge flatner roll according to the present invention, the liner (30) which is hydraulically or pneumatically adjustable height is installed on the bottom surface of the lower edge flatner roll 20 support. .

Therefore, by adjusting the height of the liner, it becomes possible to adjust the distance between the lower edge flatner roll 20 and the raw material, which has not been adjusted in the past.

In addition, the gap between the lower edge flatner roll 20 and the material is changed according to the change of the line tension according to the material and thickness of the material and the working conditions, and thus the pressure of the edge flatner roll applied to the material is changed. In the present invention, by adjusting the height of the liner according to the change of the condition, the gap between the lower edge flattener roll 20 and the material 100 can be kept constant.

In addition, by adjusting the height of the liner 30 in accordance with the degree of side-end bending defects can be adjusted to the pressure applied to the material of the edge flatner roll can be more effectively eliminate the side-end bending defects.

As described above, by improving the edge flatner roll shape and the device accordingly, it is possible to prevent linear bending defects in the center of the material, which occurred when the conventional thin sheet material is applied, and by adjusting the pressure applied to the material by the edge flatner roll, End bend defects can be eliminated, greatly reducing the incidence of defects in the color paint line and improving productivity.

Claims (2)

In the edge flatner device for side-bend removal of the thin plate which consists of the support plate and nylon plate which are installed in both the upper and lower edge flattener rolls, and the upper and lower edge flattener rolls, And the upper and lower edge flattener rolls are configured in a straight shape. The method of claim 1, Edge flattener device for side end bending removal of the thin plate, characterized in that the height adjustable liner (liner) is installed on the lower end of the support.

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