JPS60250805A - Production of thin rolled metallic sheet - Google Patents

Abstract

PURPOSE:To form simultaneously plural thin rolled metallic sheets without straining the sheets by providing preliminarily slits to a plate to be rolled then rolling the plate and cutting the rolled sheet at the slit parts. CONSTITUTION:The slits 5 are first formed preliminarily and intermittently to a plate 4 to be rolled in the rolling direction with a slit applying device 7 and thereafter the plate is rolled by a pair of rolling rolls 1 to a prescribed thickness. The slits 5 act as the parts for relieving the strain so that the strain remains hardly in the sheet after rolling. The rolled sheet 2 is then cut in the rolling direction at the slits 5 by a cutter 8, by which two thin rolled metallic sheets 3 are manufactured. The sheets 3 are thus prevented from bending, wrinkling, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a method for simultaneously manufacturing a plurality of rolled thin metal plates of a predetermined width by cutting a rolled plate rolled with a rolling roll in the rolling direction.

[Background technology] Conventionally, thin rolled plates have been produced by rolling using rolling rolls such as crown rolls for up rolling, but in recent years, rolled plates have been rolled by rolling wide rolled plates with rolling rolls. Productivity has been improved by simultaneously manufacturing a plurality of rolled thin metal sheets of a predetermined width by cutting them in different directions. However, when a rolled sheet is rolled, the strain stress is balanced within the rolled sheet, but when it is cut into multiple strips in the rolling direction, the stress is no longer balanced, and the cut rolled thin metal sheet becomes distorted. The drawback was that it was easy.

[Objective of the Invention J The present invention has been made in view of the above-mentioned points, and the object of the present invention is to provide slits in advance in a rolled plate before rolling. To provide a method for manufacturing a rolled thin metal plate in which strain generated during rolling escapes to the slits, and deformation such as bending or wrinkles does not occur in a rolled thin metal plate formed by a plurality of strips.

[Disclosure of the Invention] The method for producing a rolled thin metal plate of the present invention is a method of simultaneously producing a plurality of rolled thin metal plates 3 of a predetermined width by rolling a rolled plate 2 with a rolling roll 1 and cutting it in the rolling direction. In this process, one or more slits 5 are formed intermittently in the rolling direction of the rolled plate 4 before rolling with the rolling rolls 1, and the rolled plate 4 with the slits 5 formed therein is A rolled sheet 2 of a predetermined thickness is formed by rolling with a rolling roll 1, and the rolled sheet 2 rolled with the rolling roll 1 is cut in the rolling direction with a slit 5 to obtain a rolled thin metal plate of a predetermined width. 3 is characterized by forming a plurality of strips at the same time, and by configuring as described above, the drawbacks of the conventional example are solved.

The present invention will be explained in detail below with reference to Examples. Reference numeral 1 denotes rolling rolls such as rolling crown rolls, which are arranged in pairs above and below. A backup roll 6 is attached to each of the rolling rolls 1. A slitting device 7 that intermittently forms slits 5 in the rolled plate 4 is disposed behind the rolling roll 1 (the direction in which the material advances during rolling is the front and the opposite direction is the rear). A cutter [rfi8] for cutting in the rolling direction is arranged in front of the roll. When the plate 4 to be rolled, such as a steel plate, is sent, first, the slit applying device 7 intermittently creates slits 5 in the plate 4 to be rolled in the rolling direction.
is formed. That is, the slit 5 is formed in the shape of a broken line in the rolling direction. A rolled plate 4 with slits 5 formed therein is sent between a pair of rolling rolls 1 and rolled to a predetermined thickness by the pair of rolling rolls 1. At this time, the slits 5 serve as relief parts for strain, and strain is unlikely to remain after rolling. The rolled @2 rolled by the rolling roll 1 is sent to the cutting machine 8 and cut into slits 5.
The rolled thin metal plate 3 is cut in the rolling direction at this point to form two rolled thin metal plates 3. The rolled thin metal plate 3 manufactured in this way is used, for example, to make a resin-coated metal plate by punching a large number of through holes over the entire surface and coating both surfaces with a synthetic resin. The resin-coated metal plate is molded using a 7t-mining machine or the like to manufacture rain gutters and the like.

In the above embodiment, the production of two rolled thin metal plates 3 has been described, but two or more strips can be produced in the same manner. That is, two or more slits 5 are formed by the slit forming device 7, rolled by the rolling roll 1, and then cut 8!
At step 8, cut into two or more strips.

[Effects of the Invention 1 As described above, the present invention includes forming slits by intermittently forming one or more slits in the rolling direction of the rolled plate before rolling it with a rolling roll. Rolling the rolled plate with a rolling roll to form a rolled plate of a predetermined thickness,
A rolled plate rolled by a rolling roll is cut in the rolling direction with slits to simultaneously form multiple rolled thin metal plates of a predetermined width. When cut in the rolling direction to form a rolled thin metal plate, deformation such as creasing does not occur.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing an apparatus for carrying out the method of the present invention;
FIG. 2 is a partially omitted perspective view of the same as above, in which 1 is a rolling roll, 2 is a rolled plate, 3 is a rolled thin metal plate, 4 is a rolled plate, and 5 is a rolled thin metal plate.
is a slit.

Claims (1)

[Claims] [1] In a method of simultaneously manufacturing a plurality of rolled thin metal plates of a predetermined width by cutting a rolled plate in the rolling direction by rolling it with a rolling roll, the rolled plate is covered with One slit is made intermittently across the rolling direction of the rolled plate.
A rolled plate formed with a strip or multiple strips and slits is rolled with a rolling roll to form a rolled plate of a predetermined thickness, and the rolled plate rolled with the rolling rolls is cut in the rolling direction with slits. 1. A method for manufacturing a rolled thin metal plate, comprising simultaneously forming a plurality of rolled thin metal plates having a predetermined width.