RU224479U1 - Input box for rolling corner profiles - Google Patents

Abstract

The utility model relates to rolling production, in particular to the design of an input box for rolling corner shaped profiles. The device contains a housing 6, inside of which a lower roller 1 is installed; according to the utility model, it has an upper passage consisting of two separate yokes 3 located on both sides of the lower roller 1, while the upper part of the yoke 3 is secured by means of pins 4 to the cover 2, and the lower free part has the shape of a lower roller 1, while in the cover 2 there are grooves 5, having an oblong shape, made around the studs 4 in such a way as to provide the yoke 3 with the possibility of transverse movement when setting up the box. The utility model is aimed at increasing the service life of rolls. 3 salary f-ly, 4 ill.

Description

The utility model relates to rolling production, in particular to the design of an input box for rolling corner shaped profiles.

An introductory roller box for section rolling mills is known [1] (Author's certificate SU No. 174163; MPK V21V 7/a and V21V 27/02, publ. 08/27/1965, Bulletin No. 17), containing a guide pass and plate spring roller holders with rollers , fixed with clamping screws, and the roller holders are connected to the guide pass through a spherical hinge.

A water roller box for section rolling mills is known [2] (Author's certificate SU No. 474366 A1, MPK B21B 39/16, publ. 06.25.1975, Bulletin No. 23), containing a housing, a rotary sleeve with roller holders, and adjusting screws located in it , securing the bushings against rotation, and gaps installed inside the bushing, wherein the body is connected to the bushing by a spherical hinge, the center of rotation of which is located on the axis of the gap.

An introductory roller box is known [3] (Author's certificate SU No. 958001 A1, IPC B21B 39/16, publ. 09.15.1982, bulletin No. 34), containing

a body inside of which guide passes and lever-type roller holders are mounted, on the fixed axes of which barrels of guide rollers are mounted on rolling bearings, and on rolling bearings due to their preliminary axial loading, the barrels of guide rollers are made of two coaxial rings and are equipped with an elastic gasket in place connector

An introductory box is known [4] (Author's certificate SU No. 1163931 A1, IPC B21B 39/16, publ. 06/30/1985, Bulletin No. 24), containing a housing, roller holders mounted on both sides of its longitudinal axis, consisting of mounted on vertical axes double-armed levers carrying the first and second pairs of vertical rollers in the course of the workpiece task, screw mechanisms for installing the solution between the rollers and guide passes, moreover, windows are made in the roller holders, and the first pair of rollers in the course of the workpiece task is equipped with additional roller holders, made in the form of double-armed levers installed in the windows and mounted on the axes of the said roller holders, while an individual screw mechanism for installing the solution between the first pair of rollers is installed in the free ends of the additional roller holders.

An introductory roller box for wire and section mills is known [5] (Author's certificate SU No. 1503918 A1, MPK B21B 39/16, published on August 30, 1989, Bulletin No. 32), including a housing, guide pass-composite roller holders with upper and lower halves and rollers , and the lower halves of the composite rod holders are made integral with the body.

The disadvantages of all of the above inventions are that two rollers [1-3] or four rollers [4] are used for the task of rolling into a cage, which, when the rollers wear out, creates slipping on the upper roller and the possibility of obtaining a “corner collapse”, and accordingly is not applicable for corner profiles.

The closest technical solution is the invention “Introductory roller box for directing corner rolling” [6] (Author’s certificate SU No. 1731326 A1, IPC B21B 39/16, publ. 05/07/1992, Bulletin No. 17), containing a housing in which an upper guide pass with a profile working surface, side guide rulers, a roller holder with a roller, elements for their fixation are installed, and the upper guide pass is made of a T-shape, the horizontal shelves of which are supported on the upper ends of the side guide rulers, and the middle part of the pass with a profile working surface mounted between the inner side ends of these rulers.

The disadvantage of this device is the need to move the entire box vertically for precise adjustment and to compensate for wear of the upper pass in order to avoid defects.

In the process of rolling corner profiles for the task in the rolls of the finishing group stands, a guide roller box with an upper and lower roller installed in it is most often used - between which the gap is adjusted by moving the rollers apart and bringing them together. As the rollers wear, the gap increases, and a gap also appears between the rolled corner profile and the upper roller. After this, the strip begins to slip during the rolling process, which leads to the formation of a stall angle. To avoid the formation of this defect, the strip must be located quite tightly between the lower and upper guides, therefore, in the proposed utility model, it is proposed to install yokes on the upper side.

The technical result of this utility model is

elimination of the Angle Deflection defect, simplification of the adjustment process, increasing the accuracy of adjustment. This is ensured by the possibility of separate movement of the upper yokes 3 to determine the position at which they equally affect the strip. Separate movement of the yokes 3 also allows you to accurately regulate the pressure of the yokes 3 on the strip vertically by simultaneously bringing them together or apart.

The specified technical result is achieved through the use of the proposed utility model containing a housing 6, inside of which a lower roller 1 is installed; according to the utility model, it has an upper pass, consisting of two separate yokes 3, located on both sides of the lower roller 1, while the upper part The yoke 3 is secured by means of studs 4 to the cover 2, and the lower free part has the shape of a lower roller 1, while the cover 2 is equipped with grooves 5, having an oblong shape, made around the studs 4 in such a way as to provide the yoke 3 with the possibility of transverse movement when setting up the box.

In addition, the number of pins 4 and grooves 5 is set depending on the length of the yoke 3 and the characteristics of the rolled corner profile and preferably ranges from 2 to 16 pieces.

In addition, a steel gasket 7 is installed between the body 6 and the cover 2 and between the yoke 3 and the cover 2.

In addition, screws or rods are used as studs 4.

In addition, there is a stop 8 on the cover 2 to hold the yokes 3 along the rolling direction.

A distinctive feature of the proposed utility model is that they use two separate yokes 3, which are located on both sides of the lower roller 1 and secured by means of pins 4 to the cover 2, thereby providing regulation of the gap between them and the lower roller 1, as well as individual adjustment of their position along the horizontal axis due to the ability to move along the grooves 5, which allows for precise adjustment of the box as it wears out, as well as when changing the thickness of the rolled corner, as well as the possibility of individual adjustment when rolling unequal corner profiles.

The technical essence of the utility model is illustrated by drawings,

which depict:

Fig.1 - location of the yoke 3 relative to the roller;

Fig.2 - general view of the input box assembly;

Fig.3 - position of grooves 5 in the cover 2 of the inlet box;

Fig.4 - side view.

Positions according to drawings:

1. bottom roller;

2. cover;

3. yoke;

4. hairpin;

5. grooves;

6. body;

7. gasket

8. stop

The input box for rolling corner profiles is a housing 6 (Fig. 2), into which a lower roller 1 is installed. A cover 2 is placed on top of the housing 6, to which two yokes 3 are screwed. The yokes 3 are located on both sides of the lower roller 1 and have the upper and lower parts, while the upper part of the yoke 3 through the grooves 5 (Fig. 1) is secured by means of pins 4 to the cover 2, and the lower free part has the shape of a lower roller 1.

The gap between the lower roller 1 and the yokes 3 in the proposed inlet box is adjusted by unscrewing (loosening) the pin 4, which with its cylindrical threaded surface is in contact simultaneously with the cover 2 and the yoke 3, i.e. The yokes 3 move and shift along the grooves 5, which are made longitudinally (Fig. 3), due to which individual adjustment and displacement of each yoke 3 is achieved separately, which will ensure the rolling of both equal and unequal flange profiles using this type of box.

The number of pins 4 and grooves 5 is set depending on the length of the yoke 3 and the characteristics of the rolled corner profile and preferably ranges from 2 to 16 pieces. For example, with a yoke length of 3 - 400 mm and a strip width of 300 mm, the number of studs 4 and grooves 5 is four pieces.

Between the body 6 and the cover 2, as well as between the yoke 3 and the cover 2, a steel spacer 7 is installed to preliminary adjust the vertical position of the yokes 3 and set the gap between the lower roller 1 of the yoke 3 to the characteristics of the rolled profile.

On the cover 2, a stop 8 is made for the yokes 3 to relieve the load from the studs 4. The stop is made on the surface of the cover 2 at the point of contact with the yokes 3 in the form of a protrusion into which the yokes 3 rest, so as to prevent the longitudinal movement of the yokes 3 in the direction rolling.

As gaskets 7, steel plates with holes for fasteners are used to maintain the rigidity of the structure.

Screws or rods are used as pins 4 to ensure that the yoke 3 moves along the grooves 5 relative to each other, and then fixes them motionless.

Analysis of patents and scientific and technical information did not reveal

the use of new essential features used in the proposed utility model according to their functional purpose. Consequently, the proposed utility model meets the “inventive step” criterion.

Thus, the use of the claimed utility model

The inlet box for rolling corner profiles provides:

1. Increasing the service life of the rolls;

2. Simplification of the setup process;

3. Increased tuning accuracy;

4. Elimination of the corner stall defect;

5. Reducing mill downtime.

A source of information:

[1] Copyright certificate SU No. 174163; IPC V21V 7/a and V21V 27/02, publ. 08/27/1965, bulletin. No. 17.

[2] Copyright certificate SU No. 474366 A1, IPC V21V 39/16, publ. 06/25/1975, bulletin. No. 23.

[3] Copyright certificate SUNo. 958001 A1, IPC V21V 39/16, publ. 09/15/1982, bulletin. No. 34.

[4] Copyright certificate SU No. 1163931 A1, IPC V21V 39/16, publ. 06/30/1985, bulletin. No. 24.

[5] Copyright certificate SU No. 1503918 A1, IPC V21V 39/16, publ. 08/30/1989, bulletin. No. 32.

[6] Copyright certificate SU No. 1731326 A1, IPC V21V 39/16, publ. 05/07/1992, bulletin. No. 17.

Claims (4)

1. Input box for rolling corner profiles, containing a housing 6, inside of which a lower roller 1 is installed, characterized in that it has an upper pass, consisting of two separated yokes 3, located on both sides of the lower roller 1, with the upper part of the yoke 3 is secured by means of studs 4 to the cover 2, and the lower free part has the shape of a lower roller 1, while in the cover 2 there are grooves 5 having an oblong shape, made around the studs 4 in such a way as to provide the yoke 3 with the possibility of transverse movement when setting up the box. 2. Inlet box according to claim 1, characterized in that a steel gasket 7 is installed between the body 6 and the cover 2. 3. Inlet box according to claim 1, characterized in that a steel gasket 7 is installed between the yoke 3 and the cover 2. 4. The inlet box according to claim 1, characterized in that on the cover 2 there is a stop 8 for the yokes 3.