SU452381A1 - The method of transporting thin strips mainly on the outlet rolls of broadband machines - Google Patents

Description

(54) METHOD FOR TRANSPORTING THIN STRIPS PRIORLY ON REFLECTIVE ROLLANGES OF BROADBAND MILLS

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Known is the process of transporting thin strips predominantly on outgoing roller conveyors of broadband mills, which includes the supply of air along the bottom surface. polosg. However, with this method due

aerodynamic phenomena, the front end of the thin end of the runway (less than 2 mm on the roller table, eliminates the possibility of increasing the filling speed of the transport of the strip along the diverting role of Gano and makes it difficult for the front end to grip the winder.

The described method differs from the known one in that the air flow is fed in the direction opposite to the runway of the strip, and the flow rate is set as a function of the total strip and the speed of its movement along the roller table. In addition, the air flow is fed at an angle to the axis of transport. This prevents the front end of the strip from the roller of the roller table from beating and creates an air cushion after the task of the front end of the strip.

FIG. shows the implementation of the proposed method; in fig. 4 possible ways to implement the method

Lane 1 after leaving the last v broadband finishing stand; Mill 2 is located on the roller table 3, rollers 4 of which are made with strands 5. Tubes 6 are placed in the brook x 5, through the heads of which 7 air is blown from the compressor. The tubes 6 are equipped with a turning mechanism 8. The downhill conveyor is finished with a coiler 9. The arrangement of the tubes 6 in the creek x 5 of the roller 4 prevents damage to the tubes by the moving strip.

The method of transporting a thin strip along the roller table is realized in the following manner.

The front end of the thin strip 1 moving at a high filling speed meets on its way a powerful air resistance P, under the action of which it rises above the level of the rollers of the roller a.

However, this rise of the front end along the lengths of food, gzheK-- until a certain point. Upon encountering resistance in the form of a raised end of the strip, the air begins to about 3 .4.

to flow it along the bottom surface with an eye, V ... creates a speed of movement with an output Vj greater than relative,

p1l, 1E1i J,. of the spirit relative to the bottom surface and the speed of air movement along the upper rail, equal to V.j +. Upper surface of vo. Moreover, when the strip is defined, the air at this time is the angle of the front end elevated. at

The speeds Vn will tend to zero.,; 2

Due to the unequal relative speed-: As a result of exceeding: the speed of overgrowing of the airflow around the upper air flow relative to the lower ponies of V, and lower V, the surfaces of the front of the strip compared to the unclamped knock of the strip regarding

null (- ..--), where P is the outcome — the upper surface of the strip receives up to 02 additional air pressure on the upper

the pressure p is the density of air, the V surface of the strip is equal to:

air velocity is relative-.

but the surface, there is a pressure difference (

SRI of air on the lower and upper surfaces of the raised anteromal end, strip: The resulting additional pressure

air pressure on the upper surface1: the other strip is pressed by the rollers with rollers.

The RO (FQ tends to P) turns out to be pain-Jpg, thereby preventing its beating.

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sew compared to the pressure on the bottom

surface R. At a critical moment, the subject matter

determined by bending the front end of the strip and reducing the speed Vn to zero,

marked forces along with the weight of the I1 band. The method of transportation of thin by more elastic properties exceeds the rise of los mainly to those who take the rolling force from the oncoming air flow,; and h a

The front end of the moving lane is sharply; y and, in order to prevent it: it is lowered onto the roller conveyor, in order to re-start the beat of the front end of the strip to rise into the air under the impact of the roller table;

airflow, there is a non-direction against the course of the strip, and the speed

The restraining beating of the front end of the driving-: flow is set as a function of the thickness

from a thin strip along the roller conveyor. the strip and its speed on the roll table. Coming from the filling speed of the engine.

neither a thin strip nor its thickness (linear-2, Method 1, which distinguishes

weight), through tubes 6 (fig. 2) through the fact that, in order to create an air

Dexterous 7 along the bottom surface of the front-, cushion after the front-end task

the end of lane 1 towards its movement; stripes, the air flow is fed at an angle

forcing air at a speed of the transport axis.

452381

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