SU1763066A1 - Strip-braking device - Google Patents

Abstract

The invention relates to the field of rolling production, in particular to devices for braking strips. The purpose of the invention is to increase productivity by reducing the time required for filling lanes and reducing overall dimensions. After installing the drum winder in the start position of the winding rotary sl 2 o o o O Fig 2

Description

the frame 2 is rotated to a working position by a hydraulic cylinder. In this case, the driving brake roller 4 is located behind the reel drum, the brake element 5 occupies a vertical position in front of the roller 4, the driving roller 18 is installed under the driving brake roller 4, and the other brake element is also installed in a vertical position, pressing the cut strips to the brake element 5, and a separator roller 24 is disposed between the drive roller 18 and the press wiring, dividing the strip. 10 il.

The invention relates to the field of rolling production and can be used in coil strip finishing shops, strip slitting machines.

Devices for braking strips are known that are installed in front of the coilers after looping devices in slitting units, made in the form of driving brake rollers and a pressure roller installed at the entrance of the strips to the braking device and in contact with the driving roller. In such devices, the braking force of the strips is made up of the pre-braking force generated by the pressure roller together with the driving and its reinforcement by the driving rollers.

The disadvantage of such devices is that not all of the cut strips have sufficient braking force due to the unequal clamping force of the cut strips between the drive and pressure rollers (one of the reasons for the uneven clamping is the thickness difference of the cut strips). This leads to the fact that in slitting units with such braking devices, some of the rolls are of poor quality (loose and telescopic winding).

A preliminary braking device is known, the braking force of which is created by the electromagnetic action of the braking elements without contact with the strip.

The disadvantage of such a device is that the braking force generated by the electromagnetic effect is insignificant and requires a large reinforcement by the braking drive rollers, the number of which depends on the magnitude of the pre-braking reinforcement gain. In addition, in such devices, the braking elements are in a horizontal plane, which increases the overall size of the device along the length of the unit, the distance from the disc shears to the winder, and the time required to load the strips into the winder.

The prototype defines a device containing a pre-braking mechanism made of brake elements (press entries) arranged horizontally and a roller brake stand consisting of driving rollers.

The pre-braking mechanism consists of a frame on which movable brake elements (press wiring) and a drive for supplying brake elements to the strip, made in the form of hydraulic cylinders, are installed in the guides. The roller brake cage consists of two swing frames on which the drive rollers are mounted. Each of the swing frames has a turn actuator, made in the form of hydraulic cylinders.

The disadvantages of the prototype are: its large size along the length increases the dimensions of the slitting unit in which the device is installed, increases

the distance from the disc shears to the winder, which influences the time of filling the strips into the winder, which leads to a decrease in productivity; A large number of drives complicates the design and complexity of the device; the inability to use such devices on vertically moving lanes, since it makes it very difficult to refuel lanes in an aggregate.

The aim of the invention is to increase productivity by reducing the time required for filling lanes and reducing overall dimensions.

The goal is achieved by the fact that in a device for braking lanes containing a preliminary braking mechanism with brake elements, a brake stand with two swing frames, their rotation drives and drive rollers mounted on the frames, brake elements

mounted on | rotary frames with the ability to place the working surface of the brake elements in a vertical plane when the working position of the rotary frames.

Comparative analysis with the prototype shows that the proposed device for braking lanes is characterized in that the braking elements are mounted on the swing frames with the possibility of placing the working surface of the braking elements in a vertical plane during the working position of the swing frames.

FIG. 1 shows the device in the working position (view from the movement of the metal), general view; figure 2 is a section aa in figure 1 (longitudinal section of the device in the working position); FIG. 3 is a general view of the device (video of the side of the moving lanes at the time of filling the lanes); figure 4 - section bB in fig.Z (longitudinal section of the device in the position of filling lanes); figure 5 is a view In figure 1 (view of the device from the drive side of the winder); on fig.b - section GGD on FIG. I (a section on a drive of turn of a rotary frame); figure 7 - section dD in figure 1 (section on the lock installed on the rotary frame); FIG. 3 is a section E-E of FIG. 2 (a section on the strip pre-braking mechanism); Fig. 9 is a schematic of the device when four driving brake rollers are mounted on the swing frames together with a preliminary braking mechanism; in fig. 10 - section KK in figure 2 (section on the drive drive roller, pos. 18).

The device for braking the strips is installed in the slitting units at the exit of the loop loop behind the winder drum. The device is a roller brake stand containing a frame 1 with pivoting frames 2 and 3, on which drive rollers 4 and 18 and a separation roller 7 are mounted. Rotate frames 2 and 3 and advance the brake elements (press wiring) 5 and 20 of the preliminary mechanism The braking 6 is produced by drives made in the form of hydraulic cylinders 14 and 26. The swivel frame 2 is fixedly mounted on the axis 8. The axis 8 is mounted on the frame 1 and is made hollow. Inside the axis. 8, a shaft 9 is installed connecting the driving brake roller 4 through the gear system 10 and the chain transmission 11 with the electric motor 12. On the base 1, clamps 13 are installed in the form of pneumatic cylinders for fixing the swing frame 2 with the bed 1. Turning the axis 8 with the rotary frame 2 is carried out by means of a hydraulic cylinder 14, a toothed sector 15 and gear 16 fixed on an axis 8. The swing frame 3 is fixed on a base 1 by means of an axis 117. A drive roller 18c is mounted on it with a drive 19, a brake element (plate) 20 with a pneumatic chamber 21 of the pre-braking mechanism (press wiring) 6, a pressure roller 22 with a pneumatic chamber 23, a separation roller 24 and a clamp 25, s

by means of which the swivel frame 3 is connected to the swivel frame 2. The latch 25 is made in the form of a two-piston pneumatic cylinder. The frame 3 rotates - 5 with hydraulic cylinders 26. The pre-braking mechanism 6 consists of two brake elements (plates) 5 and 20 installed on the swing frames 2 and 3 and the drive for pressing the plate 20 to the brake element (plate) 5, made in as pneumatic chambers 21. Brake elements 5 and 20 can be made in the form of felt belts 27 and 28 with rubber gasket 29 and 30 or in the form of electric

5 mechanisms, such as linear electric motors, which create braking without contact with the bands by the action of electromagnetic fields. Number of driving brake rollers on swivel

0 frames 2 and 3 may be different, for example 4.

The device works as follows. Before starting, the device for braking strips is set to the position of filling the tapes. In this case, at first the swiveling frame 3 is turned by hydraulic cylinders 26 on the axis 17 at an angle a 2 is set to the extreme right position. Then turn the frame 2 together with the axis

0 8 through the toothed sector 15 and gear 16 by the hydraulic cylinder 14 rotates by angle a to the position in which the driving roller 4, separating roller 7 and the braking element (plate) 5 are set5 to the upper position, forming the necessary clearance for the passage of the winder drum with the filled tapes to the start position of winding (the directions of rotation of frames 2 and 3 are shown by an arrow). AT

In the start position of the winding of the strips, the reel of the winder (shown in FIG. 4 by thin lines) is aligned with the axis 8 of the swing frame 2.

After installing the winder drum, the turning start frame 2 is positioned by the hydraulic cylinder 14, the toothed sector 15 and the gear 16 to the working position (figure 2, 5 - the position of the turn frame 2 when braking the strips),

0 while the driving brake roller 4 is located behind the reel drum, the brake element (plate) 5 takes upright position in front of the driving brake roller 4, the separator roller 5, turning, separates the lanes and is set at the exit of the bands from the loop loop we (Fig.2). The inserts clamps 13 connecting the pivot frame 2 to the bed 1. The pivot frame 3 from the fueling position (Fig. 4) is rotated by means of hydraulic cylinders 26 to the working position (Fig. 2), while the driving roller 18 is set under the driving brake roller 4 , the brake element (plate) 20 of the press wiring is installed in a vertical position, pressing the cut strips to the brake element (plate) 5, and the separation roller 24 is positioned between the drive roller 18 and the press wiring, the strip section. Then the clamps 25 are connected, connecting the swing frame 2 to the swing frame 3. Air chamber 21 is supplied with the necessary pressure air to create the required force of pressing the strips 20 to the brake element 5 of the press wiring 6 and to create the necessary preliminary tension. lanes in front of the drive roller 18 and the drive brake roller 4, the unit is activated at operating speed. During the operation of the unit, the drive rollers also create braking of the lanes, intensifying the preliminary braking several times. The increase in the braking force of the driven rollers depends on the angle of the strips on the rollers. To this end, more than two rollers can be mounted on the swing frames 2 and 3. (Figure 9 shows the layout of the device when installing four driving brake rollers mounted on the swing frames 2 and 3).

After winding is finished, the winder is retracted to the unloading position of the coils and the strips are loaded onto the winder drum. The tabs 13 disconnect the pivoting frame 2 with the frame 1, the latches 25 unplug the pivoting frames 2 and 3. The device

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22 Ю 83

for braking the lanes is set to the refueling position of the lanes.

During the operation of the unit, it is possible to wind small rolls with the disaggregation of the original large roll. In this case, the cutting of strips can be carried out on a roll in close proximity to the driving brake roller 4. In order to cut the strips to the reel drum for subsequent refueling, the pressure roller 22 with the pneumatic chamber 23 presses the strips to the driving brake roller 4, the electric motor 12 is turned on and the chain gear 11 and the gear system 10 rotate the drive brake roller 4, feeding the strips to the drum of the winder.

Using the device will reduce the time for refueling lanes, reduce capital costs and increase productivity.

Claims (1)

Invention Formula A device for braking lanes, containing a pre-braking mechanism with brake elements, a braking stand with two swinging frames, their turning drives, and drive rollers mounted on the frames, which, in order to increase productivity by reducing the time for filling lanes and reducing the overall dimensions, the brake elements are mounted on the swing frames with the possibility of placing the working surface of the brake elements in a vertical plane at the working position turning frames, n Spreading the turn early / f / s2 Pcwtt / turn direction  J, s J j 9 gpf 990C92.1 Faye. 7 Mexa / ft / zm nayulny brake & ke c FIG. 9 / 7f I Fig.8 Sideboard rollers, mustache & lemny on the turning frame 2 Rollers lr1 / M # s mustache / weight pullers on pot paste j 18 N n13L vL23 Fig.Yu