RU2153944C1 - Method for making bent product - Google Patents

Abstract

FIELD: manufacture of box shaped casings, cover plates, strips, weather strips, window sills, plinths, ridge members of roof and other shaped articles from sheet material in building, machine engineering, agriculture and other branches of industry and national economy. SUBSTANCE: method comprises steps of corrugating sheet materials with formation of parallel corrugations alternating with non-deformed portions of sheet; cutting corrugated sheet along non-deformed portions; bending cut part of sheet with corrugation along line parallel to corrugation for forming new angle between bent portions or for increasing previous angle between said portions. EFFECT: enlarged assortment of bent products, simplified low labor consumption manufacturing process, enhanced quality of products. 4 cl, 24 dwg

Description

 The invention relates to methods for manufacturing bent profiles by bending sheet metal along straight lines and can be used in the manufacture of platbands, window sills, skirting boards, ridge elements for roofs, box casings for covering electrical wiring and pipes, linings, strips, and other profile products used in construction, engineering, agriculture and other fields.

 A known method of manufacturing a bent product, including corrugating sheet material with the formation of parallel corrugations, alternating with undeformed sections of the sheet, and its subsequent longitudinal cutting along the cutting lines parallel to the corrugations located between the corrugations (ed. Certificate of the USSR N 1.201.020, B 21 D 5 / 06, publ. 1985).

 The disadvantage of this method is the narrow range of manufactured products.

 The objective of the invention is to expand the range of manufactured products while ensuring ease of manufacture.

 The problem is solved in that in the method of manufacturing a bent product, including corrugating sheet material with the formation of parallel corrugations, alternating with undeformed sections of the sheet, and its subsequent longitudinal cutting along the cutting lines parallel to the corrugations, cut the corrugated sheet to obtain a strip with corrugation or part thereof , the cut strip is bent along the bend line parallel to the corrugation or its part, with the formation of a new or increase in the existing angle between the bent parts.

 The corrugated sheet is cut either along the cut line passing through the undeformed section; or along the cut line passing along the corrugation profile; or along the cutting lines, one of which passes along the undeformed section, and the other along the corrugation profile.

 In the process of cutting a corrugated sheet, a tape can be cut from it along the cutting line.

 The cut strip is bent along a line passing either along the undeformed section, or along the profile of the corrugation or its part, or along the line connecting the undeformed section with the corrugation.

 When cutting a corrugated sheet along the rib of the corrugation by cutting the tape together with it, the rib of the corrugation can be removed, as a result of which the edges of the products are smooth.

 In FIG. 1 shows a corrugated sheet material with a trapezoidal profile of the corrugation, in FIG. 2 - corrugated material with a triangular profile of the corrugation, in FIG. 3 - corrugated material with a semicircular corrugation profile, in FIG. 4 is a profile of a product A, FIG. 5 is a profile of a product B, in FIG. 6 - profile of the product B, in FIG. 7 - profile of the product G, in FIG. 8 is a profile of a product D, in FIG. 9 is a profile of a product E, in FIG. 10 - profile of the product W, in FIG. 11 - profile of the product And, in FIG. 12 is a profile of an article K, in FIG. 13 is a profile of the product A, in FIG. 14 is a profile of a product M, in FIG. 15 is a profile of an article H, in FIG. 16 is a profile of the product O, in FIG. 17 is a profile of a product P, in FIG. 18 is a profile of a product P, in FIG. 19 is a profile of product C, in FIG. 20 is a profile of the article T, in FIG. 21 is a profile of the product U, in FIG. 22 - profile of the product F, in FIG. 23 is a profile of an article X, in FIG. 24 - product profile C.

 The sheet material is corrugated with the formation of parallel corrugations, for example, trapezoidal 1, triangular 2 or semicircular 3, alternating with undeformed sections 4. The trapezoidal corrugations 1 have ribs 5, 6, side walls 7 and narrow bases 8. Triangular corrugations 2 have ribs 9, 10 and side walls 11. The semicircular corrugations 3 have ribs 12. The corrugated sheet is cut in accordance with option 1 of the method, along the cut line passing along the undeformed section 4 parallel to the corrugations 1, 2 or 3, and in accordance with option 2 of the method, along the cut line, pass yaschey along the profile of corrugation 1, 2 or 3, with the simultaneous separation of its longitudinal profile. In the manufacture of products, both methods can be used simultaneously, when the cut from one edge of the cut part of the corrugated sheet passes along the undeformed section 4, and the other edge along the profile of the corrugation 1, 2 or 3. If necessary, in the process of cutting the corrugated sheet, a strip is cut from it cutting lines. Together with the cut strip, the edge 5, 6, 9, 10, 12 can be removed. The cut part of the corrugated sheet is bent along the bend line parallel to the corrugation or the remaining part of the corrugation with the formation of a new or increase in the existing angle between the bent parts. In this case, the bending line can be located both on the undeformed section 4, and on any of the corrugation elements 1, 2, 3.

 The profiles of products A, B, C, G, D, C, F shown in the drawing are made with cutting the corrugated sheet into undeformed sections 4. The profiles of products E, F, I, K, L, M, N, O, T, U are made cutting a corrugated sheet into corrugations 1, 2, 3. Product profiles P, P, X, C are made with cutting a corrugated sheet along undeformed section 4 and corrugation 1, 2, 3.1

Claims (4)

 1. A method of manufacturing a bent product, comprising corrugating sheet material with the formation of parallel corrugations, alternating with undeformed sections of the sheet, and its subsequent longitudinal cutting along the cut lines parallel to the corrugations, characterized in that the corrugated sheet is cut to obtain a strip with corrugation or part thereof, the cut strip is bent along the bend line parallel to the corrugation or its part, with the formation of a new or increase in the existing angle between the bent parts.  2. The method according to claim 1, characterized in that the corrugated sheet is cut along the cut line passing through the undeformed section.  3. The method according to claim 1, characterized in that the corrugated sheet is cut along the cut line passing along the corrugation profile.  4. The method according to claim 1, characterized in that the corrugated sheet is cut along the cutting lines, one of which passes along the undeformed section, and the other along the corrugation profile.

Images