BRPI0716770B1 - PROCESS AND DEVICE FOR CONNECTING METAL STRIPS ON A COILING ENGINE - Google Patents

Abstract

process and device for winding metal strips on a winding mandrel. The invention relates to a method and a device for winding metal strips (2) over a winding mandrel (3) disposed in a winder well (1), to which the metal strip is fed by a propeller having a lower and an upper drive roller (5, 6), and for the guide is provided a table (7) 10 below the metal strip (2) and above the metal strip there is arranged a swiveling strip deviation well as a swivel well cap (11) contiguous to that close to the winding mandrel. For a measure of the strip traction in the winder pit, the propellant must be so adjusted that the strip stroke enables a winding of the metal strip to a straight edge coil. To achieve this, the longitudinal tensile force exerted by the propellant on the metal strip 20 (2) for controlling the course of the strip by the propellant is determined by means of an immersing strip tension measuring device (13) from above. on the metal strip (2) and the measurement signal is fed to a thruster adjustment device (22). In a suitable device, the strip deflection is performed as a rotary strip traction measuring device (13) by immersing over the metal strip (2) and provided with a deflection body (15), which has an arm. a rotatable mounted roller (16), with a roller (17) at its front end, between which the biasing body (15) and the roller arm (16) are provided with a force measuring means (20), which is connected by signal technique with a thruster adjustment device (22).

Description

PROCESS AND DEVICE FOR WINDING METAL STRIPS ON A WINDING CHUCK

The invention relates to a process and a device for winding metal strips on a winding mandrel disposed in a winder shaft, to which the metal strip is added by a propeller having an upper and lower propeller roller , for the guide a table is provided below the metal strip and above the metal strip there is a rotating strip deviation as well as a rotating well cap adjacent to that until close to the winding mandrel.

A known propellant of DE 195 20 709 Al has a stationary mounted lower roller and an upper roller that can be launched against it. The upper launchable roller is mounted displaceable by means of a pressure medium cylinder, which is formed by two reciprocating rockers, which are joined in the region of their common pivot axis by a base mounted bilaterally in the propeller frame. The rockers of this propeller can be displaced by pressure medium cylinders that can be activated separately, and the base joining the rockers together is performed as a torsion spring.

By introducing different launch forces with small differential force from the pressure medium cylinders, different pivot angles of the rockers and thus the launchable upper roller can be obtained. Because the pivoting of the upper roller can influence the traction force exerted by the propellant on the strip and, thus, adjust the traction distribution.

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DE 197 04 447 Al is known as a measuring roller for measuring the flatness of a rolling strip that is under tension in a hot rolling mill. One or more of these measuring rollers, which are compressed from below against the laminating strip, can be arranged between the laminator frames of the finishing train and / or in the lamination direction after the last laminator frame of the finishing train and / or before the propulsion apparatus for a winder and / or between the propulsion apparatus and the winder. With a measuring roller arranged between the propulsion device and the winder, the measured value obtained can be used for the pivoting of the propulsion device and, in this way, regulating the course of the strip when winding on the winding mandrel.

DE 199 53 524 Al made a loop lifter known, which can measure an existing cuneiform due to the longitudinal traction, predominant in a metal strip, by the width of the strip. The loop lifter features a loop lifter roller mounted on both sides on each swivel arm. The swivel arms are divided respectively by a joint on an axle arm and a roller arm and joined with a loop lifter shaft. The articulation deflects a replacement force exerted by the metal strip on the rotary lifter roller launched from below against the metal strip to the force gauge on the rotating arms. The replacement force corresponds to the longitudinal traction, so it can be determined from the measured replacement forces. To prevent suspension of the force gauge roller arm, the shaft arm and the roller arm are joined

3/12 to each other by a retaining element. Whether based on the total longitudinal traction or the determined wedge fraction, the exit or entry directions executed as rolling mill or propeller frames can be post-regulated, such as the number of revolutions or the launch of the rollers.

The invention aims to improve in such a way a process and a device of the type mentioned at the beginning that a better measurement of traction of a metal strip in the winder pit can be obtained, which serves to regulate the propulsion or propellant apparatus with such a influence of the strip course that a straight edge metal compound is obtained.

This objective is achieved with a process according to the invention by the fact that the longitudinal traction force exerted by the propellant on the metal strip for the control of the strip travel by the propellant is determined by means of an immersing strip traction measuring device. over the metal strip in the winder shaft and the measurement signal is added to a throttle setting. By pivoting according to the invention of the strip tension measuring device above the metal strip, especially at the end of the strip, an optimal bonding angle can also be observed. This would not be possible when pivoting the strip tension measuring device from below, as in this case the binding angle is very limited by the strip deviation required above the metal strip, including well cap, and so small that in the the end of the strip is no longer a safe measurement. The measurement at the end of the strip, however, is precisely important because there the conduction of the strip is

4/12 particularly difficult due to the no longer present traction of the finishing stage strip

It has been proposed that the cuneiform present due to the predominant longitudinal traction in the metal strip by the width of the strip, determined by the strip immersing with a link angle in the metal strip, is already determined from the measured mounting forces of a support of the strip device.

To do so, according to a preferred design of the indirect, it is possible to use an angle produced on the roll of the measuring device of the direct or link pull strip by immersing it in the metal strip.

The linkage angle ensures the transmission of force from the metal strip to the roller and from there to the force gauge integrated in the roller.

To activate the strip, at least one cylinder is required, according to a proposal of the invention, a rotating cylinder with stroke adjustment, engaging a rotating arm on the rear side. Alternatively, they can be two rotating cylinders. Another possibility for activating the strip tension measuring device is to provide the strip tension measuring device in a U-shaped frame, in which a cylinder engages in the symmetry axis of the frame.

It is therefore recommended that the binding angle is kept approximately constant for adjusting the roll immersion depth. The binding angle depends on the stroke of the rotating cylinder or the rotating cylinders

5/12 and the diameter of the wound coil. In order to observe an optimal link throughout the process, the course of at least one rotating cylinder can be adjusted. The theoretical value can be calculated during the winding process depending on the momentary coil diameter, the optimal link and the geometric data. To determine the stroke on the rotating cylinder or next to the cylinder, a path gauge can be fitted; optionally, the rotary strip tension measuring device can be equipped with an angle measurement, so that the stroke of the rotating cylinder can be calculated. The momentary diameter of the coil can be determined from the counted revolutions of the winding mandrel and the thickness of the metal strip. Alternatively, a direct measurement of the coil diameter is possible, eg with an optical laser measuring device.

According to another advantageous configuration of the invention, the roll of the strip tension measuring device is pre-accelerated before pivoting to the speed of the metal strip. As the roll is rotated during the strip winding process, prior acceleration prevents damage to the metal strip by an acceleration operation that is subsequently required. The roller can be driven mechanically and / or electrically and / or hydraulically.

A device for achieving the objective set by the invention, especially for carrying out the process, is characterized according to the invention by the fact that the strip deviation is performed as a rotating strip tension measuring device from above to inside the

6/12 strip of metal and provided with a deflection body, which features a rotating mounted roller arm, carrying a roller at its front end, and between the deflection body and the roller arm there is a means of measuring force, which is connected by signal technique with a throttle adjustment device. The strip tension measuring device thus simultaneously fulfills the classic strip drift function. From the non-operating position, that is, from the suspended standby position, therefore, the entire strip tension measuring device rotates counterclockwise downwards, to the operational position immersing in the entering metal strip, and conducts, with measurement like this simultaneously active, the metal thread for the next winding spindle.

The operation of the strip tension measuring device as a simultaneous strip deviation is preferably assisted by the fact that at least one front segment of the table following the inner propeller roller below the metal strip is performed as a turntable. This rotates clockwise around an axis of the lower drive roller.

According to an advantageous embodiment of the invention, the deflection body joins a swivel arm on the rear side with a swivel arm on the front side of the strip tension measuring device. With only one rotating cylinder, which would be arranged on the rear side and thus on the drive side, the diverter body as a union between the swing arm on the drive side and the swing arm on the service side absorbs the torsion load, which would result in unilateral activation of the measuring device

7/12 strip pull by just one rotating cylinder on the rear or drive side.

If, advantageously, on the axis of rotation of the strip tension measuring device distant from the roller arm housing the actuated mounted roller, a driven bypass roller is arranged, the metal strip can be protected against damage when it is guided along the path of the lower propeller roller to the next roller in the contiguous winder pit.

A variant of the invention provides that the strip tension measuring device with the roller arm pointing towards the winding mandrel is mounted integrated in the upper well cover. In this arrangement there is a combination of strip tension measuring device and well cap. The front roller of the strip tension measuring device would be followed by a cover extending to the first compression roller of the winding mandrel, and the free space for the upper propeller roller would be filled with a conventional deviation.

Other features and details of the invention are apparent from the claims and the following description of an embodiment shown in the drawings. Show:

Fig. 1 - in a schematic representation, a side view of a conventional winder well, according to the current state of the art;

Fig. 2 - in a schematic representation, a side view of a winder shaft with a rotating strip tension measuring device above the metal strip, while simultaneously fulfilling the strip deviation function, which is in the out of position suspended operation

8/12 of the metal strip;

Fig. 3-the object of fig. 2 with the strip tension measuring device pivoted to the measuring or operational position, just before the end of a winding operation; and

Fig. 4 - as a detail, a cross section through a deflection roller mounted on the strip tension measuring device.

A winder well 1, as shown in conventional construction in fig. 1, connects to a rolling mill or finishing stage for winding the metal strip 2 laminated on a winding mandrel 3 for a bale or bobbin 4 (cf. fig. 3). The metal strip 2 is added to the winding mandrel 3 by a propulsion or propellant apparatus, of which only the upper and lower propeller rollers 5, 6 are shown. From the lower driving roller 6 to the winding mandrel 3, a table 7 follows the metal strip 2. The beginning or the end of the metal strip 2 thus added is received by a first compression roller 8, associated with the winding mandrel. winding 3, to which other of these rollers distributed around the periphery are connected.

Above the metal strip 2 there is a strip deviation 9, which abuts the upper drive roller 5 in the waiting position for housing the strip. The strip deflection 9 is pivoted by a cylinder 10, which engages with its plunger rod on a swivel arm of the strip deflection 9. Winder well 1 is closed upwards by a well cap 11 guided from the strip deflection 9 up to the winding spindle 3. For pivoting the well cap 11, it is

9/12 articulated a cylinder 12.

In the execution of winder well 1 shown in figs. 2 and 3, the components coinciding with the winder well described above are provided with the same reference numbers. As an essential distinction, a strip tension measuring device 13 is performed there while simultaneously fulfilling the strip deviation function. This consists of a swivel arm 14 on the rear side or drive side and a swivel arm 14 on the front side, which can be seen in fig. 2 the swivel arm on the rear / drive side. The two swivel arms 14 are joined together by a deflection body 15 (cf. fig. 4) absorbing a torsional load. In addition, it has a roller arm 16, on which a driven roller 17 is mounted at the front end. The roller arm 16 is pivotally mounted by means of a hinge 18. In order to avoid tipping due to the force of gravity, the roller arm 16 is held in place by a retaining element 19.

As soon as the strip tension measuring device 13 is pivoted from above on the metal strip 2 and immerses it with its roller 17 forming a binding angle, by the roller 17 a force is applied, which activates the roller arm 16 in the clockwise. Rotation of the roller arm clockwise, however, is prevented by a force gauge 20, which instead provides a support for the roller arm 16, determines a force produced on the force axis 21 of the support and sends it as a measurement signal. to a regulating device 22 (cf. fig. 3) of the propellant. This can be adjusted in such a way based on the measurement, eg by turning the drive roller 5, 6

10/12 upper and / or lower or parallel rotation of both rollers or by emission of different closing forces on the drive and service side, which can result in a straight edge coil 4 in the winding mandrel 3.

The strip tension measuring device 13 is carried out at its rear end in the direction of the strip travel, away from the roll 17, with a deflection roller 23 provided on its axis of rotation, as shown in figs. 2 and 3 as a cross section in the region of the rotating arm 7 by the sleeve of the bypass roller 23. Also there, winder well 1 is closed upwards by a rotating well cap 11 by means of cylinder 12. Table 7 extending through below the metal strip 2 of the lower drive roller 6 to the winding mandrel 3, leading the metal strip 2, is carried out at least at its front end with a rotating table 24 movable around the axis of the lower drive roller 6 against the clockwise.

From fig. 3, which shows the operational position just before the end of a winding operation for winding the metal strip 2 to a ready bobbin 4, the binding angle, formed by the metal strip 2, can be clearly seen on one side due to to the immersed roll 17 of the strip tension measuring device 13. On the other hand, dashed lines indicate various measurement signals 25 or control signals 26, which enter the regulating device 22 or leave it for rotating means of the upper and lower driving roller 5, 6 (cf. the dashed lines 26 ). The essential parameters for the determination and eventual constant maintenance of an optimal linkage angle throughout the winding process are

11/12 fixed, for example, by detecting the stroke of the rotating cylinder or rotating cylinders 10 of the strip tension measuring device 13, the cylinders being equipped with a path gauge, by measuring the angle of the traction device measurement of strip tension 13 and the momentary diameter of the coil 4. This diameter can be determined from the counted revolutions of the winding mandrel

3 (cf. dashed line 25 starting from and even gives strip thickness. A measurement the diameter gives coil 4 is optionally possible, as with a means in measurement 27 optical laser indicated. In any case it is possible provide a signal in

measurement of the traction measurement of the strip in the winder shaft of a thruster adjustment. This can occur alternatively to the execution shown in the strip pull / strip deviation combination also by the strip pull / well cap measurement device combination. The strip tension measuring device 13 shown in figs. 2 and 3 would then be arranged integrated in the well cap 11 with roller 17 pointing towards the winding mandrel 3, that is, reflected by the line A-A of fig. 2. The free space then of the upper driving roller 5 up to the strip tension measuring device 13 could, in this option, be filled or overcome with a conventional strip deviation 9 (cf. fig. 1).

REFERENCE LIST winder well metal strip winding mandrel bale / bobbin

12/12 upper drive roller lower drive roller table (conductive table) compression roller bypass strip

10 cylinder 11 well cap 12 cylinder 13 measuring device in strip pull 14 swivel arm 15 bypass body 16 roller arm 17 roll 18 articulation 19 retaining element 20 force gauge 21 force axis 22 regulating device of propellant 23 bypass roller 24 turntable 25 measurement signal 26 measurement signal 27 optical measuring medium The laser

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Claims (12)

1. Process for winding metal strips (2) on a winding mandrel (3) disposed in a winder shaft (1), to which the metal strip is added by a propeller with a propeller roller (5, 6 ) lower and upper, and a table (7) is provided below the metal strip (2) for the guide and a rotating strip deviation as well as a rotating well cap (11), contiguous to that until close to the chuck. winding, are arranged above the metal strip, characterized by the fact that the longitudinal traction force, which is exerted on the metal strip (2) by the propellant, for the control of the strip travel through the propellant is detected by means of a strip tension measuring device (13) immersing from above the metal strip (2) in the winder well (1) and the measurement signal is fed to a thruster adjustment device (22). 2/3 approximately constant for adjusting the roll immersion depth (17). 2. Process according to claim 1, characterized by the fact that the cuneiformity of the traction distribution is determined from the measured mounting forces of a support of the strip tension measuring device (13). 3/3 characterized by at least one rotating cylinder (10), which engages the rotating arm (14) on the rear side, with stroke adjustment. 3. Process according to claim 1 or 2, characterized by the fact that a binding angle produced in the roll (17) immersing in the metal strip (2) when pivoting the strip tension measuring device (13) it is used to measure the direct or indirect mounting force. 4. Process according to claim 3, characterized by the fact that the link angle is maintained Petition 870180152907, of 11/19/2018, p. 9/11 5. Process according to claim 3 or 4, characterized in that the roller (17) is subjected to pre-acceleration to the speed of the metal strip (2) before pivoting. 6. Device for winding metal strips (2) on a winding mandrel (3) disposed in a winder shaft (1), to which the metal strip is added by a propellant with a propeller roller (5, 6 ) lower and upper, and a table (7) is provided below the metal strip (2) for guiding and a rotating strip deviation as well as a rotating well cap (11), contiguous to that until close to the winding mandrel. , are arranged above the metal strip, especially for carrying out the process of claim 1, characterized by the fact that the rotary strip deviation is performed as a strip tension measuring device (13) pivotable from above on the metal strip (2 ) and provided with a deflection body (15), which features a rotating mounted roller arm (16), carrying a roller (17) at its front end, and between the deflecting body (15) and the roller arm (16) a force measurement means (20) is provided, which is attached by signal technique with a propellant adjustment device (22). Device according to claim 6, characterized by the fact that the deflection body (15) joins a rotating arm (14) on the rear side with a rotating arm (14) on the front side of the traction measuring device strip (13). 8. Device according to claim 7, Petition 870180152907, of 11/19/2018, p. 11/10 Device according to any one of claims 6 to 8, characterized in that the roller (17) mounted on the roller arm (16) is operable. Device according to any one of claims 6 to 9, characterized in that a driven deflection roller (23) is arranged on the axis of rotation, which is distant from the roller arm, the tension measuring device of strip (13). 11. Device according to any one of claims 6 to 10, characterized in that at least one front segment of the table (7), connected to the lower driving roller (6) below the metal strip (2), is executed as a turntable (24). Device according to any one of claims 6 to 11, characterized in that the strip tension measuring device (13) together with the roller arm (16) is arranged integrated in the well cover (11) top pointing to the winding mandrel (3). Petition 870180152907, of 11/19/2018, p. 11/11