SU1593728A1 - Mill for two-row shaping - Google Patents

Abstract

The invention relates to equipment for metal forming and can be used in the production of cold-formed rolled sections. The purpose of the invention is to increase productivity while maintaining the quality of the profiles that are alternately formed in the mill. The mill contains work stands with upper and lower rolls containing molding elements installed with a gap, and vertical rollers in front of each stand. Behind the last stand, a horizontal roller is placed at the molding level. In contact with the forming elements of the lower rolls of all the stands, auxiliary elements are placed, and the first and last stands of each row contain on the upper roll an additional element installed with a clearance of /1.2...1.4/S with respect to the auxiliary element of the lower roll . For one row, the additional elements are cylindrical, and for the other, conical with equal maximum diameters amounting to /1,051...1.072/D c, where D c is the rolling diameter of the forming elements of the upper roll. The mill allows you to increase productivity by 2.2 times. 1 hp f-ly, 1 ill.

Description

(21) 4622892 / 27-27

(22) 11/15/88

(46) 09/23/90. Bul No. 35

(71) Magnitogorsk Metallurgical Combine them. V.I. Lenin

(72) C. G. Antipanov, V.I. Gridnevsky, N.T. Pakhomov and G.M. Arkaev

(53) 621.981.1 (088.8)

(56) USSR Copyright Certificate No. 533424, cl. In 21 D 5/06, 1973.

(54) DOUBLE RANCH PROFILE MILL

(57) The invention relates to equipment for metal forming and can be used in the production of cold-formed rolled sections. The purpose of the invention is to increase productivity while maintaining the quality of the profiles that are alternately formed in the mill. The mill contains work stands with upper and lower rolls containing molding elements installed with a gap, and vertical rollers in front of each stand. Behind the last stand, a horizontal roller is placed at the molding level. In contact with the forming elements of the lower rolls of all the stands, auxiliary elements are placed, and the first and last stands of each row contain on the upper roll an additional element installed with a clearance (1.2 ... 1.4) 5 relative to the auxiliary element of the lower roll . For one row, the additional elements are cylindrical, and for the other, they are conical with equal maximum diameter components (1,051 ... 1,072) Dk where DK is the rolling diameter of the forming elements of the upper roll. The mill allows you to increase productivity by 2.2 times. 1 3. Clause f-ly, 1 ill.

(L

The invention relates to equipment for metal forming and can be used in the production of cold-formed profiles.

The purpose of the invention is to improve the quality when forming corner profiles.

The drawing shows the sequential layout of the main equipment of the mill.

In front of the forming cages there is a cage with disc shears for double dissolution of the original strip blank (this cage serves as a master at the same time). Cutting with the disk knives 1, the blank 2 in two rows (A and B) enters the cage of the first molding mill. This cage (as well as cages V-VIII) contains the upper 3 and lower 4 shafts, on which the upper 5 forming with a diameter of DK and the lower 6 elements are placed, forming working gauges.

In contact with the elements 6 of all the stands, the lower auxiliary elements 7 are installed (cylindrical, except for the stands, V and VIII, where this element is conical). In cells I and IV, cylindrical 8 are installed in contact with the upper forming elements, and conical 9 additional elements with diameters D (1,051 ... 1,072) DK are installed in cells X V and VIII, forming a "free gauge with a gap S equal to 1 , 2 ... 1.4 magnitude of the roll gap S (the latter is equal to the nominal thickness of the moldable half-time).

In front of each stand I-VIII, vertical rollers 10 are installed, under which a strip (“p d) passes non-moldable in these cells. Over the last stand

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VIII of the forming mill is installed at the level of the xx horizontal roller II, which serves as a support for the molded strips (profiles) 12. Auxiliary element 13 is located in cages V and VI. The distance between the cages IV and V, as well as between the cage VIII and the roller P is equal to twice the intercellular distance of the other cages.

The camp works as follows.

The billet, cut in half with a pair of disc shears, enters the molding mill, and the 1–4 strip is not moldable in the cages 1–4, is first lowered under the vertical rollers (indicated by the arrow for row A) into stand I, and in front of the stand V moldings (with the help of additional and auxiliary elements of "free calibers") and is profiled in a cage V-VHI.

Formed in the cages of the I - IV strip passes in them at the level of molding xx, contacting with its edges with the vertical rollers. In stand V, a formed strip of row B comes down under vertical rollers below the level xx (indicated by an arrow) and goes in this position to the stand of the VHI, after which it rises by a horizontal roller to the level of molding, and then both shaped strips are cut to length with flying scissors. .

Example 1. A two-sided profiling mill (by alternately forming the corners 40X40X2) 1-4X50-300, comprising a cage with disk knives and eight forming stands with vertical rollers in front of them and with a horizontal roller installed behind the cage VIII at the level of molding. The intercellular distance is m, and between the cages IV and V and VIII and the horizontal roller 2 2 m. DK 450 mm, 2-, 4 Mm; D, 05 mm.

Example 2. The same angle profiling mill. 50X50X2,5 mm, E)

460 mm:; 3 .3 mm; , 05- D 473 mm.

Example 3. The same mill for the angle 60X60X3 mm, mm; 5.4 S 4.2 mm; , 0720k 504 mm.

Claims (2)

Invention Formula . Two-profile profiling mill for alternately forming each strip, containing working stands with upper and lower rolls, having forming elements, installed with a gap, and vertical rollers in front of each stand, in which on the lower-roll shaft of each the stand is located auxiliary element, and on the shaft of the upper roll part of the stands placed an additional element mounted with a gap relative to the auxiliary element, characterized in that, in order to improve the quality when forming corner profiles, it is equipped with a horizontal roller installed behind the last stand at the molding level, while the auxiliary elements of all the stands are placed in contact with the corresponding. the forming elements of the lower rolls, additional elements are installed on the upper roll of the first and last stands of each row, - the gap between the additional and auxiliary elements is 1.2 ... 1.4 between the rolls the gap, the additional elements of one row are cylindrical, and for the other row are conical with equal maximum diameters amounting to 1.051 ... 1.072 of the rolling diameter of the forming elements of the upper roll.  2. A mill according to claim 1, characterized in that the distance between the last stand of one row and the first stand of another row, as well as between the last stand the mill and the horizontal roller are not less than twice the distance between the other cages. AN 1 A B G b / 5 U eleven 7 7 b L 5 .9 M and/ g 7 5 x-