RU2101112C1 - Coiler of cold rolled strip in rolling mill - Google Patents

Abstract

FIELD: rolling, mainly thin precision strips in plants for producing metallic articles, steel rolling plants and other specialized plants. SUBSTANCE: coiling member in the form of bobbin is mounted on shaft joined with drive mechanism by means of universal spindle. Said shaft is mounted in bearings on traverse bar provided with mechanism for moving it along vertical guiding columns. Said mechanism is arranged on cross piece connecting said columns. Said traverse bar with bobbin is set in predetermined level by means of motion mechanism. It provides deflection of strip from horizontal plane by angle β in zone between bobbin and rolls of working stand. AT coiling strip onto bobbin angle β has tendency for changing. In order to avoid it traverse bar is displaced in vertical direction along said guiding columns and in the result angle β remains constant. EFFECT: possibility of regulating deflection angle of strip ends outside deformation zone of rolling stand and sustaining its value at coiling process without use of guiding rollers, without increase of coiler dimensions. 3 dwg

Description

 The invention relates to the field of rolling production and can be used when rolling strips at metallurgical, steel-rolling and other specialized enterprises.

 A known coiler for a cold-rolled strip, comprising a cast frame and a drum for winding the strip mounted therein on a drive shaft [1], The drive shaft is stationary on two frame supports and is connected to a drive consisting of an electric motor and a gearbox.

 The disadvantage of this winder is its low technological capabilities. Since the drum mounted on the shaft in this winder does not have the ability to move in the frame, and, therefore, relative to the rolling stand, it does not allow you to adjust the angle of deviation of the strip ends from the horizontal plane outside the deformation zone, i.e. does not allow to change the distribution of compression between the rolls of the stand. To regulate this angle and maintain it during winding with increasing roll diameter, guide rollers [2] are installed between the mill stand and the coiler, which, due to their small diameter, contribute to the emergence of significant bending stresses in the strip, which, together with the tensile stresses, cause the strip to be injured , changing its properties in thickness, which reduces the quality of the strips. This disadvantage is most noticeable when rolling especially thin strips.

 The closest in technical essence and the achieved effect to the proposed one is a coiler of a rolling mill for a cold-rolled strip, containing an organ winding strip made in the form of a drum mounted on a shaft connected to a drive [3] There is a mechanism for horizontal movement of the winding organ relative to the rolling mill, consisting of mounted on the basis of a worm screw interacting with a gear wheel mounted on the shaft of a winding body (drum). For particularly thin strips of large length, the winding body is made in the form of a spool, which eliminates the change in the shape of the roll when removing it from the winder and further transportation.

 The disadvantage closest to the proposed winder solutions [3] is the possibility of a slight change in the angle of deviation of the ends of the strip from the horizontal plane with horizontal movement of the winding body. The increase in the horizontal stroke of the winding body leads to an increase in the dimensions of the winder, an increase in production space.

 The objective of the invention is to increase the range of regulation of the angle of deviation of the ends of the strip outside the deformation zone of the working stand of the rolling mill and maintaining a given angle during winding of the strip without significantly increasing the dimensions of the coiler.

 The problem is achieved in that in the winder of a rolling mill for a cold rolled strip containing a winding strip, an organ mounted on a shaft connected to the drive, and a shaft displacement mechanism with a winding body relative to the rolling mill, according to the invention, a shaft with a winding body in the form of a spool is connected with driven by a universal spindle and mounted on bearings in the traverse, equipped with a mechanism for moving along vertical guide columns mounted on a connecting column crossbar.

 The fact that the shaft with the winding body has the ability to move vertically along the guide columns makes it possible to effectively regulate the angle of deviation of the ends of the strip from the horizontal plane and to support it during winding with even small amounts of movement of the shaft with the winding body. Changing the angle with vertical movement of the shaft occurs an order of magnitude faster than with horizontal movement. The range of regulation of this angle is expanding. The movable coupling of the shaft with the drive is provided by a universal spindle.

 Vertical movement of the traverse with the shaft and the spool allows you to set and maintain during the rolling and winding the specified angle of the strip deviation from the horizontal plane at the inlet (rear winder) or at the exit (front winder) of the deformation zone without the use of additional rollers that injure the strip.

 In FIG. 1 shows the installation of a winder relative to the working stand of a rolling mill; in FIG. 2 view of the winder from the side of the spool installation (the spool shown); in FIG. 3 type of winder in plan.

 The winder of a rolling mill includes a crosshead 1, in which an output shaft 2 is mounted on bearings (not shown), on which a spool 3 is put on to wind the rolled strip. Traverse 1 is installed on the guide vertical columns 4 with the possibility of vertical movement using a screw mechanism 5 for moving the traverse. The input shaft 2 with the spool 3 is connected to the drive 6 through a universal spindle 7. The mechanism 5 is mounted on the crossbar 8.

 Winder works as follows. The traverse 1 with the spool 3 using the screw mechanism 5 located on the crossbar 8 to move the traverse is set to a predetermined height and thereby ensures the strip deviates from the horizontal plane by an angle β in the area between the spool 3 and the rolls of the working stand 9. During the rolling of the output shaft rotation strip 2 with the bobbin 3 is carried out from the drive 6 through the universal spindle 7. In this case, when winding onto the bobbin 3 as a result of increasing the diameter of the strip of the strip, the angle b will tend to change. To avoid this, in the function, for example, the number of turns of the strip on the spool 3, a corresponding vertical movement of the beam 1 (for example, lifting) is carried out along the vertical guide columns 4 and the angle b remains constant. Thus, the application of the proposed technical solution allows you to set and adjust the specified angle of entry or exit of the strip from the deformation zone during the rolling process without the use of intermediate devices and, in particular, rollers.

 The proposed winder rolling mill, it is advisable to apply when rolling thin high-precision strips with the same properties or a given gradient of properties in thickness.

Sources of information:
1. A.A. Korolev, G.M. Nikolayevsky. Mechanical equipment of rolling shops, state publishing house for ferrous and non-ferrous metallurgy.-M.1953, p. 331-332, fig. 269.

2. USSR author's certificate N 687668, cl. ³ B 21 B 1/22, 1981.

 3. Japan patent, cl. 12 C 211.4 N 14065, claimed 21.01.65.1967.

Claims (1)

 Winder of a rolling mill for a cold-rolled strip containing a winding member mounted on a shaft connected to the drive and a shaft displacement mechanism relative to the rolling mill, characterized in that the winding member is made in the form of a spool, the shaft being connected to the drive by a universal spindle and mounted on bearings in the traverse having a mechanism for moving along vertical guide columns mounted on a crossbar connecting the columns.

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