JPS6334729Y2 - - Google Patents

Description

[Detailed explanation of the idea]

INDUSTRIAL APPLICATION FIELD This invention relates to an intermediate paper feeding roller for feeding intermediate paper between rolled plates when various rolled plates, particularly ultra-thin plates, are wound up. Conventional technology Generally, when winding thin steel sheets of 0.25 mm or less into a coil, Saran kraft paper or metal laminating paper is placed between the thin steel sheets to prevent scratches caused by contact between the thin steel sheets. An intermediate paper is inserted and the thin steel plates are wound up so that they do not come into contact with each other. At this time, the intermediate paper is fed by a rolled plate roller, such as a round bar-shaped roller placed above or below between the thin steel plate unwinding machine and the winding machine, or a roller with a spiral groove in one direction. This was done using intermediate paper feeding rollers. Problems to be solved by the invention When feeding the intermediate paper using round rod-shaped rollers among the above-mentioned feeding rollers, if the winding speed of the rolled plate is high, the inserted intermediate paper will be pushed outward or If the intermediate paper is inserted between the rolling plates with wrinkles on its surface, there is a risk of wrinkle-like scratches on the rolling plates. When the intermediate paper is fed using grooved rollers, if the winding speed of the rolled plate is slow, crease-like scratches occur on the rolled plate, which reduces the product yield. This invention solves this problem and proposes an intermediate sheet feeding roller that can always accurately feed the rolled sheet without causing any damage, regardless of the winding speed. Means to Solve the Problem This invention uses a point on the cross-sectional diameter line of the circumferential surface of the central part in the axial direction of the roller body and a point within ±45° from the position opposite to said point as starting points. ,
Inclination angle θ5° to 50° toward both ends of the roller, width w5mm to 25
mm, two spiral grooves with depth t0.1mm~3.0mm,
The gist is that the grooves are arranged so that the distance L/width w satisfies 0.5 to 5.0, and two parallel spiral grooves are symmetrically provided on the left and right sides. The feed roller of this invention can be subjected to surface treatment such as heat treatment for hardening or hard chrome plating in order to impart wear resistance to the surface. If the inclination angle θ of the two spiral grooves is less than 5 degrees, wrinkles are likely to occur on the surface of the intermediate paper inserted between the rolling plates to be wound up, which causes vertical folds and wrinkle-like scratches on the rolled plates. If the angle exceeds 50°, an outward tensile force may be applied to the intermediate paper being fed and the paper may be damaged, so the angle was set at 5° to 50°. If the width w of the spiral groove is less than 5 mm, the effect of stretching the wrinkles on the surface of the intermediate paper to be fed will be small, and linear wrinkles will be formed on the intermediate paper, which may cause linear scratches on the rolled plate. If it exceeds 25 mm, it is also undesirable because it is less effective in smoothing out wrinkles on the surface of the intermediate paper and causes scratches on the rolled plate. If the depth t of the spiral groove is less than 0.1 mm, the effect of tightening the wrinkles in the intermediate paper will be small due to the thickness of the intermediate paper, and if it exceeds 3.0 mm, the intermediate paper being fed will be press-fitted into the inclined groove. This is not preferable because it causes linear wrinkles in the intermediate paper. The reason why the ratio L/w of the distance L between the grooves and the width w of the two parallel spiral grooves arranged on the entire circumferential surface of the feed roller is set to 0.5 to 5.0 is that if the ratio is less than 0.5, It is not preferable because it causes warp-like scratches on the intermediate paper, and it is also undesirable if it is 5.0 or more because the effect of smoothing wrinkles in the intermediate paper is small, so it is limited to 0.5 to 5.0. Function An embodiment of this invention is shown in the drawings, and its function will be explained. Two parallel spiral grooves arranged on the left and right sides in the direction of both ends of the feed roller 1 are arranged on the circumferential surface of the central part of the feed roller 1 in the axial direction. From the position on the diameter line facing
Each point within a range of 45° is the starting point,
The most preferable starting point is two opposing points on the roller cross-sectional diameter line. Starting from two points 4 and 5 that face each other on the cross-sectional diameter line of the circumferential surface of the central part of the feed roller 1 in the axial direction,
Two spiral grooves that satisfy the conditions of an inclination angle θ of 5° to 50°, a width w of 5 mm to 25 mm, and a depth t of 0.1 mm to 3.0 mm are formed in the direction of both ends of the roller, and the ratio of the distance between the grooves L/width w is but
0.5 to 5.0, and two spiral grooves are symmetrically arranged on the left and right sides of the roller divided into two at the center. If this feeding roller is used to feed the intermediate paper between the rolled plates to be wound up, the intermediate paper that comes into contact with the circumferential surface of the roller will be rotated by the symmetrical spiral grooves 2,
Because the intermediate paper is fed while applying tension evenly to the left and right due to the action of 3, the intermediate paper moves straight without being biased to the left or right, and wrinkles do not occur. Example Two spiral grooves with an inclination angle of θ20°, a width of 15 mm, and a depth of t of 0.5 mm are formed on the outer peripheral surface of a roller with a length of 600 mm and a diameter of 70 mm, starting from a pair of central points in the axial direction of the roller. They were arranged symmetrically on the left and right sides under the conditions that the groove distance was L35 mm and L/w = 2.3. Use this roller as a feed roller, width 450
When winding a Fe-42%Ni alloy rolled plate with a width of 450mm and a thickness of 0.15mm at a winding speed of 200mm/min, Saran kraft paper with a width of 450mm and a thickness of 0.02mm is used as an intermediate paper between the rolled plates. It was fed and wound into a coil.
Then, the appearance of the rolled plate was examined.
The results are shown in Table 1 as the product yield. For comparison, a roller with the same dimensions as the above example but without grooves, an inclination angle of θ5°, and a width
Using a spiral grooved roller with one spiral groove of w2mm, depth t2mm, and distance between grooves L10mm,
A rolled plate having the same dimensions and material as in the above example was rolled up under the same conditions. Table 1 shows the appearance condition (product yield) of the rolled plate in this case.

[Table] Effects of the invention This invention has two parallel spiral grooves symmetrical with respect to the center on the entire circumferential surface of the roller under certain conditions. Paper without wrinkles
The rolled plate can be sent immediately, there is no risk of wrinkles or scratches on the rolled plate, and as shown in Table 1, there is no occurrence of defective products.

[Brief explanation of the drawing]

Figure 1 is a front view of one embodiment of this invention.
FIG. 2 is a longitudinal sectional side view of the center of the same as above, and FIG. 3 is a partially enlarged front view showing details of the spiral groove. 1...Feed roller, 2, 3...Spiral groove,
4, 5... Starting point, w... Width, t... Thickness, L...
...distance between grooves.

Claims (1)

[Scope of utility model registration request] Starting from a point on the cross-sectional diameter line of the circumferential surface of the center part in the axial direction of the roller body and a point within ±45° from a position opposite to said point, set an inclination angle of θ5° to 50° in the direction of both ends of the roller.゜, width w5mm~25mm, depth
Two spiral grooves with t0.1mm to 3.0mm are arranged so that the distance between grooves L/width w satisfies 0.5 to 5, and two parallel spiral grooves are symmetrically provided on the left and right sides. An intermediate paper feed roller for winding a rolled plate, characterized by: