RU74319U1 - CART OF THE ROLLING MILL - Google Patents

Abstract

The claimed utility model relates to the processing of metals by pressure and can be used when rolling solid metal profiles. The technical result is to improve the geometric characteristics of the processed solid metal profiles. To do this, in the cage of the roll forming mill, the casing, inside of which the lower part of the drive roll cage is attached to the casing, in the upper part, instead of the casing of the drive rolls attached to the casing, is used a cage of beams with pressure rollers attached to the casing, in addition, in the direction of the processed sheet metal material in the rolling mill, between the penultimate drive roll and the beam with pressure rollers on both sides additionally installed side rollers, and such side rollers spring-loaded and attached to adjustable levers, one end of which is pivotally directly mounted on this beam, and the other end of which is spring-loaded and pivotally connected to the body through the rod.

Description

The claimed utility model relates to the processing of metals by pressure and can be used when rolling metal profiles from workpieces of measured length.

State of the art

In the prior art, rolling mill stands are known. For example, the mill stand is described in the USSR copyright certificate 1509145 A1, 09/23/1989, B21B 19/02. As the closest analogue to the claimed utility model, we chose a rolling mill stand manufactured by ROLL FORMING ENG 'СО, the products of which can be found on the website www.rollformer.ru, as well as on their various exhibition brochures and reference books. The stand of the rolling mill, selected as the closest analogue, includes a housing, inside of which both the lower and upper parts contain cages of drive rolls attached to the housing.

SUMMARY OF THE INVENTION

The purpose of this claimed utility model is to improve the obtained by roll forming geometric characteristics of metal profiles from workpieces of measured length, the so-called "end effect". To do this, in the stand of the roll-forming mill, the casing, inside of which the casing of the drive rolls attached to the casing is contained in the lower part, in the upper part instead of the casing of the drive rolls attached to the casing, a cage of beams with pressure rollers attached to the casing is used, in addition, in the direction of the processed sheet metal material in the rolling mill, between the penultimate drive roll and the beam with pressure rollers, side rollers are additionally installed on both sides, and such side rollers spring-loaded and attached to adjustable levers, one end of which is pivotally directly mounted

on this beam, and the other end of which is spring-loaded and pivotally connected through the rod to the body.

Enumeration of figures.

Figure 1 presents the proposed stand in the context.

Figure 2 presents the proposed lever (side view aa)

The reference numbers in the drawings indicate: 1 stand, 2 - housing, 3 - drive roll, 4 - beam, 5 - pressure roller, 6 lever, 7 - hinge, 8 - side roller, 9 - rod, 10 - spring, 11 - a glass, 12 - a nut.

Obtaining on roll forming mills of steel shelves with a thickness of 0.7 and 0.9 mm from workpieces of meter length, C-shaped profiles of steel with a thickness of 1.5 mm and a length of one to three meters is accompanied by a permanent defect, called in practice "end" , which means the dissolution of the beginning and end of the product. The length of this defect is usually equal to the distance between the stands of the rolling mill. Technically, this drawback is eliminated by continuous rolling and cutting the finished product behind the mill. But in this case, the mill is more expensive, the setting is more complicated, and for short products, even after continuous rolling and subsequent cutting after the mill, the end effect remains no less.

This proposal addresses this shortcoming as follows. Upon entering the penultimate stand of the C-shaped profile, the side rollers 8, under the action of the spring 10, compress the shelves of the C-shaped profile until the rod 9 rests in the glass 11, which prevents the profile shelves from “flattening”. With further movement of the profile, the end face moves away from the side rollers 8, the resistance of the shelves to bending increases, and when the shelf is supported on the roll of the next stand, it is fully compensated. When the profile leaves the rolls of the previous stand, when the resistance of the shelves to bending is weakened without the support of the rolls of the previous stand, begin

act on the side rollers similarly to the initial operation, but in reverse order. The springs 10 should be for a sheet of 0.7 mm - 100 N, for a sheet of 0.9 mm - 200 N, for a sheet of 1.5 mm - 350-400 N. The springs should be of the following sizes: D≈22 mm, d ≈2; 2.5 and 3.0 mm.

Claims (2)

1. A cage of a rolling mill, including a housing, inside of which a cage of drive rolls attached to the casing is contained in the lower part, characterized in that in the upper part of such casing there is a cage of beams with pressure rollers and pivotally mounted levers, at the lower ends of which are between the roller and the beam lateral rollers are placed, and on the opposite - articulated with adjustments to limit the stroke and the force of the spring-loaded rods associated with the housing, while in the roll forming mill the real stand is installed before respectfully penultimate in the direction of rolling. 2. The cage of the rolling mill, characterized in that the pressure rollers are deployed at an angle to the plane of the product 75-80 degrees.