KR100614458B1 - Devices for drawing or breaking metal bands or metal sheets - Google Patents

Abstract

In order to extend the effective range of the drive system in the device for drawing or speed reduction of the metal band or sheet 4, including an endlessly rotating chain system, and to adapt the introduction, discharge and drive states to a particular task, shaping. And an elastic lining 12 that can be adapted by the filling parts 31, 32.

Description

Device for drawing or breaking metal bands or metal sheets {DEVICE FOR EFFECTING ONE OF DRAWING AND BRAKING ONE OF METAL BANDS AND METAL SHEETS}

The present invention relates to a drive system of a drawing or breaking device of a metal band or metal sheet in a band line between endless rotating chain systems.

European Patent Publications EP-A-0088347 and EP-A-0195096 can provide the tension or braking force required during braking of a metal band to the surface of the divided or undivided band without damage. Disclosed is a breaking stand for a sheet band.

The use of the vortex effect for the braking of electrically conductive metal bands is disclosed in DE-B 1 288 865. This embodiment is actually used. An important drawback is that certain functions are only given when the band speed reaches about 50 m / min. In addition, the band tension adjustment is made only by the variation of the interval. However, the result is not satisfactory because contact with the magnet causes relative motion when the gap is too small.

Another vortex brake is disclosed in DE 195 24 289 A1. An important difference is that the permanent magnet is moved in a circular path. Only one magnetic path is used for the retention effect. In addition, the parallelism of the permanent magnets occurs only during part of the cycle. As a result, the retention effect is formed in a nonuniform and significantly reduced manner. In order to provide sufficient specific band tension, the rotational speed of the braking rollers should be of a size that can no longer be controlled. In addition, high drive outputs appear at very undesirable efficiencies.

It is an object of the present invention to broaden the possibility of using known braking stands on the one hand, and on the other hand to obtain different specific behaviors for different challenges in the introduction, discharge and driving conditions of carriage-type roller blocks, especially in the band drive area. .

This object is achieved by shaping with strong support in the central region according to the features of the independent claims. The inlet and outlet should be elastically constructed. This configuration is such that high elasticity is obtained in the horizontal direction (band tensioning direction). In addition, since low squeezing is achieved by the present invention, flexing at the inlet and outlet can be significantly reduced. The lining width corresponds to the chain pitch. The arrangement is made between the traveling rollers. With this configuration, it is possible to provide a contact surface sealed to the drive area. This configuration requires synchronous running of the upper carriage chain to the lower carriage chain.

If the lining is relatively thick, a low lining hardness is preferred. By embedding the metal band, the shape error and the band waveform of the metal band in the cross section are compensated without problems. The clearance space formed allows the squeezed volume of the elastic lining to move in a certain way.

Filling parts, such as flat-bar steel, are provided on the linings. In this way, squeegeeing can be adapted in a particular way to the functional task by the stress concentration factor, while a predetermined inclination of the lining in the tension direction can be given almost without limitation.

A suitable application is that only one infinite rotary chain is formed of a rotary table. In this case, a force is introduced into the band by a permanent magnet or an electromagnet to provide braking or tensioning force. The magnetizable metal band is pulled by the tension onto the protective strap of the carriage chain and the driving force is generated according to the value of μ.

Another possibility is that two rotating rollers are equipped with permanent magnets or electromagnets and a parallel, magnetically moving field is formed by an applied magnetic pole, which magnetically moving field is a linear, rotary vortex in the electrically conductive band material. It is suitable to act as a brake.

When energy is supplied conductively or inductively through the rotating system, the metal band is heated. This effect can also be used in galvanic processes or other processes.

When an electronic measuring head is mounted in a rotating system, for example, the band thickness, surface conditions, metal structure, etc. can be tested very accurately because the metal band and the test head may be operated at a fixed position at the same speed for a certain time. Because it can.

When the mechanical linear drive is operated by an electric linear drive, the best mode of operation is given. This embodiment is particularly suitable for high forces and high speeds, since it only loads the infinitely rotating chain system in the linear drive region.

When the braking stand is placed on the control frame at the pass line height, extremely precise control of the band in relation to the center of the band or the band edges is possible, because of this measure the tilting moment is "design". It is not. " For this reason, the tension fluctuation by a vibration is avoided. This is important for rolling, stretching, bending and lightening processes.

The breaking stand or control frame can be extended by the band tension measuring frame. In this case, these units hang on the leaf springs. The reaction force of the band tension is detected without distortion through the measuring cell. The measuring system can measure only horizontal force with high repeatability and can be set to a few newtons depending on the measuring range.

By the present invention, special effects can be given to the high demands on bands with very high surface sensitivity, such as copper or aluminum bands. In more detail, a special effect can be given by the special supply of the chain with the roller block into the relatively short clamping and drive area by means of a straight guide strip which allows the absorption of the clamping force at the same time. This allows the relatively large pressures necessary to ensure a large tension or holding force to be absorbed without the relative movement between the band and the rotary carriage-type roller block. The special supply of the roller block is made by the introduction and discharge curves in the straight guide strip of the drive area. High elastic transitions are made possible by special shaping. Squeegeeing of the elastic lining is reduced by the insertion of the forming plate.

The configuration of the electrolinear drive has the advantage that the hinge end of the carriage chain link plate is loaded only by deflection and centrifugal forces, while the load from the applied band tension acts only in the driving region. Therefore, the dimensional setting of the hinge can be limited to the deflection force and the centrifugal force. Due to this, wear is minimized.

The drive section may be formed such that current is supplied conductively or inductively to the metal band. This solution is preferably used for the formation of a magnetic field used in the galvanic process, in the heating of the band, in the measurement process in the band, and for induction of retention. For the current supply, an electrically conductive material is inserted into the carriage-type roller block. When the roller block passes through the drive region, the current can be switched. In addition to good efficiency compared to conventional gas or oil fired annealing furnaces, a great advantage of this measure is that the energy supply can be cut off at any time. When the vortex method is used, the band tension is controlled by the opposite speed of the carriage chain, and the holding force can be adjusted by the variation of the frequency.

When the measuring probe is mounted on the lining carrier of the endless rotating chain system, ideal evaluation conditions are given by the rotating table. The challenge of the endless rotating chain system is to support the band and to ensure a fixed band spacing for the measuring head or magnetic coil. The duration of the test operation can be set by the definition of the contact section because the metal band and the endless rotating chain system have the same speed in this area. The application is suitable for band thickness measurement, band stress measurement, surface scanning and other test systems. Alternatively, the current may be supplied laterally from the inside or from the outside. After the carriage chain reaches the parallel section or before it leaves the parallel section, the current is switched on or off.

According to the same system, voltage may be supplied to individual magnets or magnetic coils across the entire segment area. The band is pulled onto the carriage chain by magnetic traction. Band tension can be provided through the infinitely rotating chain system as a function of the force and μ value. This is also possible with permanent magnets. This embodiment is also suitable for the magnetizable metal band.

1 is a cross-sectional view showing a split band breaking stand.

2 is a front view of a breaking stand with a control and measurement frame.

3 is a side view of a breaking stand with a control and measurement frame.

4 and 5 are cross-sectional views of the elastic linings possible under different loading conditions.

6 is a sectional view showing forward and reverse tension by the vortex field;

7 is a cross-sectional view showing the forward and reverse tension by the magnetic field.
Explanation of symbols on the main parts of the drawings
1: winding mandrel 2: wound coil
3: third separator 4: metal band
5: upper rotating roller 6: lower rotating roller
7: 2nd separation part 8: 1st separation part
9: loop 10: split shearer
11,11a: carriage chain 12: lining
13: lining carrier 14: working rail
18: piston rod 19: drive device
20: breaking (tension) stand 21: control frame
23: calibration cell 24: leaf spring
26: support wheel 27: side guide roller
30: clearance space 31,32: support plate
33: permanent magnet 34: magnetic coil
35: elastic block 36: protective spring

Hereinafter, the embodiment shown in the accompanying drawings will be described in detail.

The device shown has the advantage that individual band strips can be fed tangentially to the winding reel without a deflection sheave. The reverse tension formed in the braking stand is transmitted to the take-up point without deflection loss and relative motion. This gives the ideal prerequisites for a uniform specific band tension distribution. Tangential feed is continuously regulated. Reference numeral 1 denotes a winding mandrel of the winding reel, reference numeral 2 denotes a wound coil, reference numeral 3 denotes a third separation of the band strip, reference numeral 4 denotes a metal band, and reference numeral 5 denotes an upper rotation. A roller, 6 a lower rotating roller, 7 a second separator, 8 a first separator for feeding the metal band to the braking stand at right angles from the loop 9, and 10 Represents splitting shears.

A special feature of the solution according to FIG. 2 is that the mechanical linear drive is moved by the electric linear drive 19. By this solution, a large band tension can be introduced into the metal band in the fastest way. During deflection, only the force resulting from the centrifugal force and the hinge movement occurs in the carriage chain. The carriage chain 11 can simply be constructed. The entire drive chain consists of a shaft with a sprocket, a universal shaft, a gear unit, a clutch and an electric motor. At the same time having a high band tension, substantially higher speeds can be handled without problems. Reference numeral 12 denotes an elastic segmented lining, reference numeral 13 denotes a lining carrier, and reference numeral 14 denotes an operation rail.

The braking stand 20 is suspended from the control frame 21 by the leaf springs 24. Band tension can be measured with very low hysteresis and very high repeat accuracy by a weighing cell 23 without distortion due to deflection. The braking and tension stand 20 consists of upright rotating rollers 5, 6. These rotary rollers 5, 6 are arranged opposite each other and are inserted into the guide of the stand 20. The upper rotary roller 5 is set against the lower rotary roller 6 by means of a cylinder-compressed piston rod 18.

The carriage chains 11 and 11a consist of a plurality of carriage-like roller blocks which are joined to each other. This roller block extends over the entire width of the metal band 4 in the direction of the arrow 25 and is rolled on the track by at least the support wheels 26 on both sides, and the side guide rollers 27 and the side guide rollers 27. ) Is in lateral contact. The track extends into the drive region, in which roller blocks facing the drive region hold both sides of the metal band 4 to fix the metal band between the roller blocks.

An elastic lining 12 is provided on the lining carrier 13. The lining width corresponds to the chain pitch T (see FIGS. 4 and 5) and extends within the axle of the support wheels 26 of two adjacent, ie continuous blocks. The axles simultaneously define a defined center of rotation. This elastic lining 12 is constituted by the gap space 30 in such a way that the elastic adaptation structure of the pressed lining is possible on the inlet and outlet sides. The squeegee height of the elastic lining should be as low as possible for as little flexing work as possible. At the same time, in order to allow different band velocities of the individual split band strips through different slopes of the elastic lining as shown in FIG. 5, the elastic lining must have very high elasticity in the band tension direction. This functional inconsistency is solved by the squeegeeing height being adapted to the task via the stress concentration factors by the support plates 31, 32 according to the invention, but only limited to a negligible inclination of the elastic lining. Figure 4 shows the position of the elastic lining when the band tension is small, Figure 5 shows the position of the elastic lining when the band tension is high.

When the permanent magnet 33 or the magnetic coil 34 forming the vortex field is mounted to the lining carrier 13, an electrically conductive band, in particular a band made of aluminum, copper and alloys thereof, can be used for the introduction of band tension. . In this case, the carriage chain is generally moved in the opposite direction to the band driving direction. The length of the contact section can be adapted as needed.

The embodiment according to FIG. 6 is particularly important for metal bands which give very high surface requirements since no contact is made with the braking system. The spacing between the permanent magnet 33 or the magnetic coil 34 can be kept constant by the support of the rotating roller set by the elastic block 35. The metal band 4 is moved between the permanent magnet 33 or the magnetic coil 34 by the traction force. Also shown is a protective strap 36. If the cylinder-compressed piston rod 18 is replaced by a spindle drive, the gap can be set so that the machine has an additional control member.

When a permanent magnet 33 or magnetic coil 34 forming a magnetic field is mounted to the lining carrier 13, a magnetizable metal band can be used for the introduction of band tension. In this case, the carriage chain is moved in the band running direction. The length of the contact section can be adapted as needed.

This embodiment is particularly important for metal bands where the highest surface requirements are given because only one side is in contact with the braking system.

Claims (15)

An apparatus for drawing or breaking a metal band or metal sheet, Two infinitely rotating chain systems in which the metal band or the metal sheet is moved inwards, arranged opposite each other, and forming a gap therebetween; A carriage-type roller block for clamping or driving the metal band or the metal sheet; Elastic lining means for covering the roller block; A plurality of support plates acting on said elastic lining means to control the tension applied to said elastic lining means; And Magnetic field generating means for generating a magnetic field acting on the metal band or the metal sheet to apply at least one of a driving force and a restraining force to the metal band or the metal sheet; Device for drawing or breaking a metal band or metal sheet. The method of claim 1, Said elastic lining means being arranged in a contact region in which said chain system and said metal band or said metal sheet are in contact, Device for drawing or breaking a metal band or metal sheet. The method of claim 1, The magnetic field generating means includes means for generating a vortex, Device for drawing or breaking a metal band or metal sheet. delete An apparatus for drawing or breaking a metal band or metal sheet, Two infinitely rotating chain systems in which the metal band or the metal sheet is moved inwards, arranged opposite each other, and forming a gap therebetween; And Including a vortex system for generating a vortex that acts on the metal band or the metal sheet to generate a linear tension therein; Device for drawing or breaking a metal band or metal sheet. The method of claim 5, wherein The vortex system moves in the same direction as the metal band or the metal sheet moves Device for drawing or breaking a metal band or metal sheet. The method of claim 5, wherein The vortex system moves in a direction opposite to the direction in which the metal band or the metal sheet moves Device for drawing or breaking a metal band or metal sheet. delete delete delete delete delete delete delete delete

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