EP1916042A1 - Line for straightening strip material wrapped to a coil and for feeding in the same to a processing machine - Google Patents

Abstract

The line for straightening strip material (3) wrapped to a coil (2) and for feeding in the strip material to a processing machine, comprises a winder (4), on which the coil is holdable and the strip material of the coil is windable, a feed (5) for the delivery of the strip material from the line to the processing machine, a straightening machine (6) displaced between the winder and the feed, a device (23) for cutting the strip material end of the coils and the strip material beginning of the coils, and a device for connecting the cut strip material end with the cut strip material beginning. The line for straightening strip material (3) wrapped to a coil (2) and for feeding in the strip material to a processing machine, comprises a winder (4), on which the coil is holdable and the strip material of the coil is windable, a feed (5) for the delivery of the strip material from the line to the processing machine, a straightening machine (6) displaced between the winder and the feed, a device (23) for cutting the strip material end of the coils and the strip material beginning of the coils according to a predefinable outline related to the level stretched by the length and breadth of the strip, and a device for connecting the cut strip material end with the cut strip material beginning. The straightening machine is hung at guides and its winder-side line inlet is raised or lowered. The cutting device is adjustable so that the non-predefinable outline by stressed places processes the work piece producible from the strip material in the processing machine. The straightening machine comprises a separating mechanism at the line intake so that it is adjustable and controllable. The strip remainder and/or strip end hook of the strip material windable on the winder are obligatorily separated. The separating mechanism is formed as a plasma or laser cutting device, which is propelable with a high number of revolutions and is displaceable by a ball caster spindle mechanism with gear motor in an angle of 90 degrees to the direction of travel of the strip material. A cutting- and connecting device are arranged in the feed at the line-intake side. The distance between the cutting device and the middle of the feed rolls of the feed is an integer multiple of the feed length. The strip material end and -beginning of the coil circumcised by the cutting device are positioned to one another in the area of the connection device arranged between the cutting device and the feed inlet. The distance between the connecting device and the cutting device and/or the center of a feed roller corresponds to the feed length or an integer multiples of the feed length. A cutting and/or a connecting head of the cutting device and/or the connecting device are propelable by a drive device with servomotor, servo frequency converter and ball spindle mechanism. The cutting head is formed as laser or plasma cutter head. The connecting head is formed as laser or plasma welding head. The cutting device cuts according to predefined data in a work piece memory. The connecting device is formed as clinching device. A centering device is arranged in the straightening machine for centering the strip material in horizontal direction. The upper straightening rolls of the straightening machine is held for few seconds in ventilatable manner and the strip side guides of the centering device are centrically adjustable after ventilation of the upper straightening rolls by positioning motor-thread spindle mechanism. The line has displacement gauges or fork light barriers, by which the circulating path of the guides of the centering device is penetratable and is placed in the bandwidth distance in centering position. The strip-side guides are formed as hardened and polished strip-side guides. The feed-side strip outlet of the straightening machine is raised and lowered. The straightening machine and/or the strip inlet of the straightening machine is adjustable with all outside diameters of the coils in an optimal beginning of the strip transfer position. The straightening machine and/or the strip outlet of the straightening machine with different vertical position of the feed and/or the processing machine proximate to the feed motion is adjustable into the optimal beginning of strip transfer position. A swivel bearing of the straightening machine, around which the strip inlet during raising and lowering is tiltable, is adjustable in vertical direction with respect to the guide and/or the guides. A vertical position drive for the strip inlet of the straightening machine comprises a servomotor, servo frequency converter and ball spindle mechanism. A vertical position drive for the strip outlet of the straightening machine comprises two servomotor, servo frequency converter and ball spindle mechanism. A horizontal position drive for the straightening machine comprises a servo gear motor, a precision gear wheel and a precision gear rack. The horizontal and the vertical position drives are operable at the same time. A discharge brake torque of an outlet brake of the winder is controllable dependent upon the outside diameter of the coils. The straightening machine at the strip inlet has a strip end sensor for detecting the availability of the strip remainder. The straightening machine is displaceable by the horizontal position drive with standing straightening machine roles with the strip speed in horizontal direction. A displacement sensor is arranged at the feed motion and by which the strip speed is detectable and transferred to a control device of the horizontal position drive. A sensor startable by the straightening machine is arranged in a predefined distance of 1.5 m. The horizontal position drive is adjustable for a distance of 1 m with a creep speed. A transfer table is arranged within the area of the inlet-side of the separating device. The separating mechanism is formed as compactly formed shears for the strip material beginning.

Description

The invention relates to a belt system for straightening wound into coils strip material and the introduction of the same in a further processing machine, with an unwinder on which the coil halterbar and the strip material from the coil is unwound, a feed, by means of which the strip material from the belt system the finishing machine can be handed over, and a straightening machine, which can be moved between the unwinder on the one hand and the feed on the other hand, suspended from one or more guides and their unwinder side band inlet can be raised and lowered.

With such a belt system, the transfer of the strip material beginning of a coil from the unwinder to the straightening machine and then from the straightening machine to the further processing machine upstream feed can be facilitated.

The invention has the object of developing the generic tape system such that the set-up times when changing a coil are further reduced.

This object is achieved according to the invention by a cutting device for trimming the strip material end of a coil and the strip material beginning of the following coil according to a predeterminable contour, based on the plane defined by the band longitudinal and band width direction, and a connecting device for connecting the trimmed strip material end to the trimmed strip material beginning, wherein the cutting device is adjustable so that the predeterminable contour does not run through stressed areas of the producible from the strip material in the further processing machine workpiece solved. By this combined cutting and connecting device, it is possible to facilitate the introduction of the strip material beginning of a "fresh" coil in the further processing machine considerably, resulting in considerable savings in setup times. As a result, the operational life of the inventive system for straightening coiled coil material and introducing it into a further processing machine compared to the prior art is significantly increased.

Advantageously, the straightening machine has a separating device at the strip inlet, which can be adjusted and controlled in such a way that a strip residue or bandend hook of the strip material wound up by the unwinder is forcibly separated. This automatic procedure ensures that there are no operational disturbances due to the tape end hooking of the used coil.

Advantageously, the separator can be formed as a pair of scissors, resulting in a comparatively compact design of the separator.

Of course, the separator may alternatively be formed as a cutting disc, which is drivable at a high speed and by means of a ball screw drive with geared motor can be moved.

Furthermore, it is possible to design the separation device as a plasma or laser cutting device.

The cutting and connecting device for trimming or connecting the strip material end of the leading coil with the beginning of the strip material of the following coil is advantageously arranged on the strip inlet side of the feed.

For exact execution of the cutting operation, it is advantageous if the distance between the cutting device and the center of feed rollers of the feed is an integer multiple of the feed length.

In order to realize a reliable connection between the strip material end of the one coil and the strip material beginning of the other coil, the trimmed by the cutting device strip end of a coil and the trimmed by the cutting device strip material beginning of the subsequent coil in the region between the cutting device and the inlet side of the Feed arranged connecting device in flush system be positioned together.

For reliable performance of the connection, it is expedient if the distance between the connecting device on the one hand and the cutting device or the center of the feed rollers of the feed on the other hand corresponds to the feed length or an integral multiple of the feed length.

An exact implementation of the cutting and / or connecting operations is achieved when a cutting and / or a connecting head of the cutting device or the connecting device by means of a drive device with servomotor, servo and ball screw drive is driven.

The cutting head of the cutting device can advantageously be designed as a laser or plasma cutting head.

Accordingly, the connection head of the connecting device may be formed as a laser welding or plasma welding head.

The cutting device can be conveniently controlled according to the data that can be specified in a workpiece memory.

Alternatively, the connecting device can also be designed as a clinching device.

For the exact and exact implementation of the cutting and joining process steps, it is advantageous if the straightening machine is assigned a centering device for centering the strip material in the horizontal direction at the belt inlet and at the belt outlet end. This can be a circumcision of the beginning of the strip material and the band material end be made, wherein the beginning of the strip material and the strip material end can be joined together after virtually quasi-seamless.

For centering located in the straightening strip material, it is expedient if the upper straightening rollers of the straightening machine in a relatively short time, preferably held in a few seconds, lüftbar and band side guides of the centering after ventilation of the upper straightening rollers are centrally adjustable.

The band side guides of the centering devices are expediently adjustable by means of positioning motor threaded spindle drives.

In order to facilitate the positioning of the band side guides of the centering or to make this accurate, Wegaufnehmer or forked light barriers are advantageously provided by means of which the travel of the band side guides of the centering detectable and the band side guides of the centering in Bandbreitenabstand in centering position can be adjusted.

The band side guides can be advantageously designed as hardened and ground band side guide rails.

A further simplification of the operation of the belt system is achieved when the feed side belt outlet of the straightening machine can be raised and lowered, the straightening machine or the belt inlet of the straightening machine is adjustable in all outer diameters of the coil in an optimal Bandanfangsübernahmestellung, and wherein the straightening machine or the Tape spout the Straightening machine at different vertical positions of the feed or the feed following processing machine is adjustable in an optimal Bandanfangsübergabestellung. As a result, an adjustment of the inclination of the straightening machine and beyond the vertical level of the straightening machine to the respective present by the coil located on the unwinder or by the inlet level of the further processing machine requirement profile with a relatively low effort is possible.

Advantageously, the straightening machine has a pivot bearing about which the unwinder side band inlet of the straightening machine when lifting and lowering thereof is pivotable, wherein this pivot bearing in the vertical direction with respect to the guide or the guides is adjustable.

To carry out the adjustment of the straightening machine, it is particularly advantageous if a horizontal positioning drive for the straightening machine and / or a vertical positioning drive for the strip inlet of the straightening machine and / or a vertical positioning drive for the strip outlet of the straightening machine, a drive device with at least one servomotor, servo and Ball screw drive has or have.

For the vertical adjustment of the straightening machine or the same, there are advantages when the vertical positioning drive for the tape inlet of the straightening machine, a servomotor, servo and Kugelrollspindeltrieb and the vertical positioning drive for the belt outlet of the straightening machine have two servomotors, servo inverters and Kugelrollspindeltriebe.

Alternatively, it is possible for a horizontal positioning drive for the straightening machine and / or a vertical positioning drive for the strip inlet of the straightening machine and / or a vertical positioning drive for the strip outlet of the straightening machine to have a drive device with at least one hydraulic setting cylinder, a positioning device and a servo valve. exhibit.

Furthermore, it is advantageous if a horizontal positioning drive for the leveler has a servo gear motor, a precision gear and a precision rack.

To further reduce set-up times, the horizontal and vertical positioning drives can be operated simultaneously.

In order to accomplish the takeover of the strip material from a coil in each case in an optimal manner, it is advantageous if the unwinding side strip inlet of the leveler between an upper position and a lower position is adjustable or verschenkbar, so that the beginning of the tape wound coil material from the vertical direction upper and from the vertical direction in the lower peripheral region of the coil in the tangential direction of the running from the coil beginning of the tape straightening machine can be inserted.

According to a further advantageous embodiment of the belt system according to the invention, the outer diameter of a coil, for example by means of a laser-analog light barrier, detectable and are the distance of the leveler to the unwinder and the Inclination of the straightening machine as a function of the detected Au βendurchmesser of the coil preferably automatically adjustable. As a result, the position of the straightening machine can be set automatically as a function of the changing outer diameter of the coils to be processed.

Moreover, it is advantageous if a trigger brake torque of a drain brake of the unwinder is controllable in dependence on the outer diameter of the coil, so that the force for pulling the strip material from the coil remains constant despite the changing amount of remaining at the unwinder or on the coil strip material.

Expediently, the straightening machine has a belt end sensor at the belt inlet, by means of which it can be detected that only one remaining band is present from the coil.

The leveler is advantageous by means of its horizontal positioning drive in standing straightening machine rolls with the belt speed in the horizontal direction movable.

For this purpose, it is expedient if a feed path sensor is arranged on the feed, by means of which the belt speed is detected and can be forwarded to a control device of the horizontal positioning drive of the straightening machine.

In order reliably to exclude disturbances at the end of a coil, it is advantageous if, at a predeterminable distance, for example 1 to 2, preferably 1.5 m, upstream of the inlet side of the feed, a sensor which can be approached by means of the straightening machine is arranged, by means of which the horizontal positioning drive the straightening machine for a predeterminable distance, for example, 0.5 to 1.5, preferably 1 m, is adjustable in a creep speed.

In order to exclude any disturbances in a generic tape system due to existing at the end of the tape band hoop, it is expedient if the straightening machine of the belt system at its tape inlet has a separator by means of a tape rest or Bandendehaken the unwound from the unwinding strip material is automatically forcibly severed. By appropriate default setting of the belt system, the band remainder is always disconnected without the operator can influence it. As a result, damage to the straightening machine or the subsequent processing machine due to the Bandendehakens be safely excluded.

A simplification of the inlet of the strip material beginning or of the strip material in the straightening machine is achieved if a hinged suspended band transfer table is arranged in the region of the inlet side of the separating device.

The separating device can be advantageously designed as a compact scissors.

Advantageously, the scissors can also be used for the Schopfen the beginning of the strip material.

Alternatively, the separation device may be formed as a separation hunter with a driven at high speed cutting disc, the frequency-controlled by means of a geared motor and a ball screw drive profiled rail guided at an angle is movable by 90 degrees to the direction of the strip material.

Advantageously, the traversing speed of the cutting disc rotating at high speed can be programmed as a function of the strip thickness of the strip material in a workpiece data store.

The separation device can be advantageously designed as a plasma cutting or laser cutting device.

In the following the invention will be explained in more detail by means of embodiments with reference to the drawing.

Figur 1

eine Seitenansicht einer ersten Ausführungsform einer erfindungsgemäßen Bandanlage;

Figur 2

eine Seitenansicht der in Figur 1 gezeigten Ausführungsform der Bandanlage, wobei eine Richtmaschine sowie ein Vorschub der Bandanlage im Vergleich zu Figur 1 in Vertikalrichtung aufwärts verstellt sind;

Figur 3

eine weitere Ausführungsform der erfindungsgemäßen Bandanlage mit einer abwicklerseitig aufwärts geschwenkten Richtmaschine; und

Figur 4

die in Figur 3 gezeigte Ausführungsform der erfindungsgemäßen Bandanlage, wobei die Richtmaschine abwicklerseitig abwärts verschwenkt ist.

Show it:

FIG. 1

a side view of a first embodiment of a belt system according to the invention;

FIG. 2

a side view of the embodiment of the belt system shown in Figure 1, wherein a straightening machine and a feed of the belt system are compared in comparison to Figure 1 in the vertical direction upwards;

FIG. 3

a further embodiment of the belt system according to the invention with an unwrapping side upwards tilted straightening machine; and

FIG. 4

the embodiment of the belt system according to the invention shown in Figure 3, wherein the straightening machine is pivoted downwards on the developer side.

A belt system 1 according to the invention shown in FIGS. 1 to 4 for straightening To coil 2 wound strip material 3 and for the introduction of this strip material 3 in a further processing machine not shown in the figures has an unwinder 4, a feed 5 and a straightening machine. 6

On the unwinder 4, the coil 2 is halterbar and the strip material 3 from the coil 2 unwound. By means of the feed 5, the strip material 3 from the belt system 1 can be transferred to the further processing machine. The straightening machine 6 is movable between the unwinder 4 on the one hand and the feed 5 on the other hand. It is suspended from one or possibly more guides 7.

For horizontal Verfahrung the leveler 6 of the belt system 1, a horizontal positioning 8 is provided, which has a servomotor, a servo-controller and a ball screw drive in the illustrated embodiment. Alternatively, it is possible to design the horizontal positioning drive 8 for the leveler by means of a servo gear motor, a precision gear and a precision rack or by means of a hydraulic actuator cylinder, a path positioning and a servo valve.

The horizontal positioning drive 8 of course includes a suitable control unit, which is not shown in detail in the figures.

The straightening machine 6 is equipped with a vertical positioning drive 10 at its belt inlet 9 facing the unwinder 4. To this vertical positioning drive 10 at the tape inlet 9 of the leveler 6 includes a servo motor, a servo inverter and a ball screw drive. By means of this vertical positioning drive 10, the straightening machine 6 is pivotable about a arranged in the region of the belt outlet 12 of the leveler 6 pivot bearing 13. The straightening machine can thus be pivoted with respect to the pivot bearing 13 approximately between the upper inclination shown in Figure 3 and the lower inclination shown in Figure 4, wherein the inclination of the straightening machine 6 is virtually arbitrarily adjustable.

At the belt outlet 12 of the leveler 6, two vertical positioning drives 14 are provided by means of which the belt outlet of the leveler 6 and with this the pivot bearing 13 of the leveler 6 are adjustable in the vertical direction. With a comparatively small ground clearance 15 of the feed 5, the belt outlet 12 of the straightening machine 6 is in a comparatively low position, whereas with a comparatively large ground clearance 16 of the feed 5, the belt outlet 12 of the straightening machine 6 is arranged higher, as can be seen in particular from FIGS 1 and 2 results.

Alternatively, the vertical positioning drives 10, 14 of the straightening machine 6 may also have hydraulic actuating cylinders, path positions and servo valves.

A strip material start of a processed coil 2, which is located on the unwinder 4, is held by a hydraulically operated pressure roller with hydraulic drive and multi-disc brake. The diameter of coil 2 is detected by a laser-analogue light barrier. Depending on the outer diameter of the coil 2, the straightening machine 6 is moved horizontally to the unwinder 4 or to the coil 2; in addition, the inclination the straightening machine 6 also set according to the outer diameter of the coil 2 so that the beginning of the strip material is optimally inserted into the straightening machine 6 and in the band inlet 9. The alignment of the straightening machine 6 takes place automatically by means of the vertical positioning drives 10, 14 at the belt inlet 9 and belt outlet 12 of the straightening machine 6. The laser-analogue light barrier of the unwinder 4 can furthermore be used to control a withdrawal brake torque of a drain brake of the unwinder 4.

With gradually decreasing outer diameter of the coil 2, the withdrawal force with which the strip material 3 is withdrawn from the unwinder 4 and from the coil 2, is kept constant by means of a falling braking torque, wherein, of course, different band cross sections of different coils 2 are taken into account in the setting.

Before the start of the straightening operation, the straightening machine 6 is moved by means of the horizontal positioning drive 8 into a belt cross-section, in particular the belt thickness, taking into account the optimal distance from the unwinder 4 or the coil 2, this positioning of the straightening machine 6 taking place automatically. If this optimum distance between the leveler 6 and the unwinder 4 or the coil 2 is set, the feed 5, without a belt loop between the belt outlet 12 of the leveler 6 and the inlet side 17 of the feed 5 oscillates excessively, the strip material 3 with forward optimum stroke rate in the further processing machine, not shown in the figures.

• Die beiden vertikalen Positionierantriebe 14 am Bandauslauf 12 der Richtmaschine 6 und der vertikale Positionierantrieb 10 am Bandeinlauf 9 der Richtmaschine 6 verfahren die Richtmaschine 6 in eine optimale Position, in der die Richtmaschine 6 etwa in Richtung einer Tangente des Bandmaterialanfangs, der von der hydraulisch betätigten Andrückrolle des Abwicklers 4 gehalten wird, so dass der neue Bandmaterialanfang in einfacher Weise in den Spalt zwischen geöffneten Vorbiege-und Einzugrollen der Richtmaschine 6 eingebracht werden kann. Die Verstellvorgänge zur Ausrichtung der Vertikalposition und der Neigung der Richtmaschine 6 beginnen simultan mit der horizontalen Verfahrung der Richtmaschine 6 mittels des horizontalen Positionierantriebs 8, so dass aufgrund der Gleichzeitigkeit der Verstellbewegungen Rüstzeit eingespart und dementsprechend Produktionszeit gewonnen werden kann.

If a new coil 2 is used on the unwinder 4, so that there is a new beginning of the strip material, the following sequence results:

• The two vertical positioning 14 on the belt outlet 12 of the leveler 6 and the vertical positioning 10 at the belt inlet 9 of the leveler 6 process the leveler 6 in an optimal position in which the leveler 6 approximately in the direction of a tangent of Bandmaterialanfangs, of the hydraulically operated pressure roller is held by the unwinder 4, so that the new beginning of the strip material can be introduced in a simple manner in the gap between the open Vorbiege and feed rollers of the leveler 6. The adjustment operations for aligning the vertical position and the inclination of the straightening machine 6 start simultaneously with the horizontal Verfahrung the leveler 6 by means of the horizontal positioning drive 8, so that saved due to the simultaneity of the adjustment setup time and accordingly production time can be obtained.

• Anhalten der horizontalen Verfahrung der Richtmaschine 6,
• Aufwärtsschwenken der Richtmaschine 6 um deren Schwenklager 13, bis die schräg verlaufende Vorderkante des vorderen Tischteils 19 vom Außenumfang des Coils 2 entfernt ist, damit bei der darauf folgenden Drehung des Coils 2 am Abwickler 4 die Außenmantelfläche des Coils 2 nicht beschädigt wird, wobei der Abstand zwischen der Vorderkante des vorderen Tischteils 19 und der Außenmantelfläche des Coils 2 ca. 5 mm bis 10 mm betragen sollte,
• Einschalten eines hydromotorischen Wickelantriebs des Abwicklers 4 und eines hydromotorischen Andruckrollenantriebs, wobei jeweils eine Lamellenbremse freigeschaltet wird.

At the belt inlet 9 of the straightening machine 6, a hydraulically pivotable tape transfer table 18 is provided. The tape transfer table 18 consists of two table parts 19, 20, which are connected to each other by means of a hinge 21. When starting the tape transfer table 18 in the horizontal Verfahrung the leveler 6 bends the front table part 19 from. This kinking operation activates a proximity switch which initiates the following operations in succession:

• Stopping the horizontal movement of the straightening machine 6,
• Swinging up the straightening machine 6 about its pivot bearing 13 until the oblique front edge of the front Table part 19 is removed from the outer circumference of the coil 2, so that in the subsequent rotation of the coil 2 on the unwinder 4, the outer circumferential surface of the coil 2 is not damaged, wherein the distance between the front edge of the front table part 19 and the outer circumferential surface of the coil 2 approximately 5 mm to 10 mm,
• Switching on a hydromotorischen winding drive of the unwinder 4 and a hydromotorischen Andruckrollenantriebs, wherein in each case a multi-disc brake is released.

The beginning of the strip material then slides over the strip transfer table 18 into the open bending and drawing rollers of the leveling machine 6. In the direction of the strip material behind the upper feed roller of the leveler, a sensor for detecting the beginning of the strip material is arranged. As soon as the sensor detects the arrival of the strip material beginning, a hydraulic adjustment of the upper feed roller of the leveler 6 takes place.

The contact force of the upper feed roller of the leveler 6 is determined by means of a proportional pressure control valve and a pressure sensor according to the bandwidth and the strength properties of the strip material 3. Thereafter, the Vorbiegerolle, which is arranged in the strip running direction upstream of the feed roller, in its Vorbiegeposition. The Anstellhub the Vorbiegerolle is, if this is in the Vorbiegeposition stopped by a transducer in dependence on the thickness of the strip material. The Vorbiegerolle is in its Vorbiegeposition, the drive means of the leveler 6 is turned on, by means of the bending, retraction and straightening rollers of the leveler be set in rotary motion. As a result, the beginning of the strip material is then driven out of the straightening machine 6. Another sensor, which is arranged on the belt outlet 12 of the straightening machine 6, detects the beginning of the strip material and sets the horizontal positioning drive 8 of the straightening machine 6 or the servomotor and the servo converter thereof in operation. The straightening machine 6 is then moved by means of the horizontal positioning drive 8 in the direction of the feed 5. During the movement of the straightening machine 6 out of the area of the unwinder 4 in the direction of the feed 5, the straightening machine 6 is offset by means of the vertical positioning drives 10, 14 in the horizontal. Thereafter, the leveler 6 is moved by means of the vertical positioning drives 10, 14 in a vertical position corresponding to the height of the inlet side 17 of the feed 5, which may correspond approximately to the height of sub-tools of the feed 5 downstream press. Such sub-tools of presses can eg inlet height of 100 mm to 450 mm have; Therefore, it is extremely advantageous for a problem-free transfer of Bandmaterialanfangs in the feed 5, when the straightening machine 6 in the transfer of Bandmaterialanfangs in the feed 5 has the same vertical level as the feed 5 and thus the inlet of the downstream press.

If the beginning of the strip material is behind the feed rollers of the feed 5 in the detection range of a sensor, straightening roller drives are stopped and then the upper feed roller is lowered by a hydraulic setting cylinder. The contact pressure and thus the contact force of the upper feed roller is determined by a stepper motor, which is controlled by a proportional pressure control valve. The setting values are stored in a workpiece data memory, usually for about 250 different workpieces, stored.

By means of this precisely meterable setting force, which is achieved by means of its pressure sensor which switches off precisely when a set pressure value is reached, it is no longer necessary for the operator of the conveyor system 1 to enter other pressure values manually whenever the workpiece widths or workpiece materials change. In addition, the accurate specification of the contact force band skew, which is due to excessive contact pressures or insufficient tape drive, which occurs at too low Anstelldruck avoided.

After the strip material beginning between the feed rollers of the feed 5 is fixed, is caused by the control unit of the belt system that the leveler 6 is moved to its directional position, the exact directional position depends inter alia on the thickness of the strip material 3. The Verfahrung or adjustment of the leveler 6 is carried out by the roller drives the leveler 6; In this case, the leveler 6 promotes strip material 3, which is stored in a belt loop, which forms between the belt outlet 12 of the leveler 6 and the inlet side 17 of the feed 5. From this belt loop takes in the further process of the feed 5, the strip material. 3

The operator of the conveyor system 1 subsequently controls in Einrichtbetrieb the beginning of the strip material for cutting into the finishing machine. After some feed thrusts with respective subsequent processing engine hub have been made, the belt system 1 is set to automatic mode.

The coil 2 is processed until a remainder of the same is detected by a belt end 9 of the straightening machine 6 arranged belt end.

For the processing of the remaining strip material 3, it is advantageous if, after appropriate signaling of the belt end sensor, the straightening machine 6 is moved by its horizontal positioning drive 8 without the straightening rollers of the straightening machine 6 rotating with the feed speed of the belt material 3 towards the feed 5. In this method, a comparatively flat belt loop, which corresponds to the thickness of the strip material 3, driven so that the rest of the band does not deform unnecessarily. The rest of the band then does not fall, as is common in stationary dressing systems known from the prior art, onto the hall floor or on transfer bridges, as a result of which surface damage and soiling on the strip material 3 are avoided.

In this case, the speed of the strip material 3 is transmitted to the horizontal positioning drive 8 or to its control by a feed path sensor. The belt speed results from the number of strokes per minute and the stroke length. Accordingly, the straightening machine 6 moves during the workpiece production with belt speed in the direction of the feed. 5

When the belt outlet 12 of the leveler 6 is about 1.20 m in front of the inlet side 17 of the feed 5, the transport of the strip material end by the horizontal Verfahrung the straightening machine 6, without turning the rollers of the leveler 6, interrupted by a then actuated proximity switch. The proximity switch sets a belt inlet side of the straightening machine 6 provided separator 22 in operation. By means of this Tennvorrichtung 22 a provided at the end of the strip material Bandendehaken is separated. The severed Bandendehaken falls - always in the same place - in a scrap container. This scrap container, which may be a car with two scrap containers, can be moved out of the belt system 1 at right angles to the running direction of the strip material 3, for example.

Subsequently, hydraulic motors, which drive the rollers of the straightening machine 6, automatically take over the further transport of the straightened band remainder. With each feed stroke, these hydraulic motors are given a pulse from the feed 5. The amount of fluid for the speed and thus the rotational speed of the rollers of the leveler 6, which corresponds to the belt speed, is determined by a proportional flow control valve.

Since most finishing machines, such as stamping and pressing, can process strip material of different strip thicknesses and high material strength, the strip end hook, which can not be passed through straightening machine 6 and not through the further processing machine, should generally be severed. For this purpose, the upstream of the straightening machine at the band inlet 9 arranged separator 22 is used.

The separator 22 may be formed as a compact, hydraulically operated scissors, which is fastened to the tape inlet 9 of the leveler 6. In this embodiment can the hinged suspended band transfer table 18 at the inlet of the separator 22 and the scissors are held. The cutting device 22 or the scissors can also be used for the Schopfen the beginning of the strip material.

In addition, the separating device 22 may be designed as a separating hunter with a rotating at a high speed cutting wheel. The cutting disc is guided by means of a frequency-controlled geared motor profiled rail via a ball screw drive, wherein the adjustment direction is perpendicular to the direction of the strip material 3. The separation hunter is also arranged at the belt inlet 9 of the leveler 6. The travel speed for the cutting wheel of the separating device 22 is then programmed depending on the thickness of the strip material 3 to be processed in the workpiece data memory. Also in this embodiment of the separating device 22, the tape transfer table 18 is attached to the separating device 22.

Furthermore, it is possible to design the separating device 22 as a plasma or laser cutting device.

Due to the use of the separating device 22 in the region of the strip inlet 9 of the leveler 6 results in a considerable time and material savings.

When the above-mentioned tape end sensor detects the tape material end, in the tape unit 1 described above, the separation of the tape end hook by means of the separator 22 necessarily begins only after this process is completed, the remaining tape remaining in accordance with the individual feed lengths in Einzelhubbereich the straightening machine 6 are passed. The operator is thus forced to perform the separating cut by means of the separating device 22.

On the inlet side of the feed 5, the above-described conveyor system 1 has a cutting and connecting device. A cutting or connecting head of this cutting and connecting device 23 is selectively movable in three directions of movement, in the tape passage direction, in the belt plane perpendicular to the tape passage direction and vertically to the tape passage direction.

The cutting head of the cutting and connecting device 23 is movable in the rail guided by means of a drive, which is formed by a servo motor, a servo inverter and a ball screw.

The cutting process and the bonding process can be done by a laser cutting or laser welding head or plasma cutting or plasma welding head, possibly the connection process but also by clinching.

The strip material end is guided in the strip running direction before the feed 5 by means of two continuously adjustable, hardened and ground strip side guide strips 24. The employment of the two band side guide rails 24 via a handwheel with bandwidth display by means of a right or left threaded spindle drive.

The remaining tape is positioned by the feed 5, depending on the required feed length. The cutting device of combined cutting and connecting device 23 X feed lengths is positioned in front of the center of the feed rollers 25 before the feed 5. With a feed length of 100 mm and X = 2, the distance between the cutting device of the cutting and connecting device 23 to the center of the feed 5 and the feed rollers 25 is thus 200 mm.

The cutting device cuts according to predetermined data, which are stored in the workpiece memory, in the tape running direction and in the horizontal, perpendicular to the direction of tape running direction from the rest of the tape. The cutting profile or the contour of the cut is placed so that the later following connection points from the strip material end of the expiring strip or coil 2 and the beginning of the strip material of the new strip or coil 2 not in a sensitive area, where in the downstream processing machine small sections, eg small holes, to be cut, would be destroyed by a stamp of the finishing machine. After trimming the strip material end, the feed 5 clocks to allow the strip separation point to free one feed stroke or multiple feed strokes of the strip material end out of the separation point region.

The straightening machine 6 with the beginning of the strip material of the new coil 2, which protrudes over a provided on the belt outlet 12 of the straightening machine 6 hinged band transfer table 26, passes, driven by the horizontal positioning 8, the beginning of the strip material of the new coil 2 in the cutting position for the beginning of the strip material.

With the same contour in Bandlauf- and a horizontal direction perpendicular to the direction of tape running direction, in which the strip material end of the previous coil 2 has been cut, the beginning of the strip material of the new coil 2 is also trimmed.

With narrow strip material 3, it may happen that the beginning of the strip material is offset laterally in the straightening machine 6. This can be effected by an indirect employment of the upper straightening rollers 27 of the straightening machine 6 that the upper straightening rollers 27 of the straightening machine and their upper feed roller are aired within a few seconds, the running direction of the strip material 3 is corrected and then the upper straightening rollers 27 of the leveler 6th be closed again.

If the upper straightening rollers 27 of the straightening machine and the upper feed roller of the same need to be lifted, keep the Bandvorbiegerollen before the feed rollers of the leveler 6 the beginning of the strip material in the leveler 6, so that the weight of the belt loop, the strip material 3 does not pull out of the leveler 6.

At the belt inlet 9 of the straightening machine and at the belt outlet 12 of the same are provided via hydraulic motors and displacement sensor adjustable centering devices 28, 29, which are each equipped with band side guides 30 and 31 respectively. The required position of the strip material 3 is produced by way of a touch probe operation. After the correction of the tape run, the beginning of the tape material is trimmed as described above.

The subsequent joining of the strip material end of the spent coil 2 with the beginning of the strip material of the new Coils 2 takes place in the position in which the strip material end of the spent coil 2 has been positioned by the feed 5 after the circumcision thereof.

In order to get the strip material beginning of the new coil 2 in the same position, the horizontal positioning drive 8 of the leveler 6 is driven accordingly.

The beginning of the strip material of the new coil 2 is positioned flush in front of the strip material end of the used coil 2.

The connection between the beginning of the strip material and the strip material end is made specifically at those locations where welding points or stapling points can be applied which are not positioned in that area where sensitive perforations, for example in the finishing machine or in the tool. Perforations, with small diameters, must be introduced. The connection can also be made by clinching operations.

Thereafter, in the single stroke operation, the feed 5 is clocked with subsequent subsequent processing machine lift until the connection point between the strip material end and the strip material beginning has passed through the downstream processing machine. The joints must be removed after passing through the finishing machine from the workpiece container.

Claims (40)

A strip line for straightening strip material (3) wound into coils (2) and for introducing same into a further processing machine, comprising an unwinder (4) on which the coil (2) can be held and the strip material (3) can be unwound from the coil (2) a feed (5) by means of which the strip material (3) can be transferred from the strip line (1) to the further processing machine, and a straightening machine (6) which can be moved between the unwinder (4) on the one hand and the feed (5) on the other hand, suspended on one or more guides (7) and whose unwinder-side band inlet (9) can be raised and lowered, characterized by a cutting device (23) for trimming the strip material end of a coil (2) and the strip material beginning of the subsequent coil (2) according to a predetermined contour, based on the plane defined by the band longitudinal and bandwidth direction plane, and a connecting device (23) for connecting the trimmed strip material end to the besch Nittenen strip material beginning, wherein the cutting device (23) is adjustable so that the predetermined contour is not through stressed areas of the producible from the strip material (3) in the further processing machine workpiece. A strip line according to claim 1, whose straightening machine (6) has a separating device (22) at the strip inlet (9) which can be adjusted and controlled such that a strip rest or band end hook of the strip material (3) unwound from the unwinder (4) is forcibly severed , Strip system according to claim 2, whose separating device (22) is designed as a pair of scissors. Belt system according to claim 2, whose separating device (22) is designed as a cutting disc which can be driven at high speed and by means of a ball screw drive with geared motor. Strip system according to claim 2, whose separating device (22) is designed as a plasma or laser cutting device. Strip system according to one of claims 1 to 5, the cutting and connecting device (23) is arranged on the strip inlet side of the feed (5). A belt installation according to claim 6, wherein the distance between the cutting device (23) and the center of feed rollers (25) of the feed (5) is an integer multiple of the feed length. A belt installation according to claim 6 or 7, in which the strip material end of the one coil (2) cut by means of the cutting device (23) and the strip material beginning of the subsequent coil (2) trimmed by the cutting device (23) in the region between the cutting device (23) and the inlet side (17) of the feed (5) arranged connecting device (23) are positioned in flush contact with each other. A conveyor system according to any one of claims 6 to 8, wherein the distance between the connecting device (23) on the one hand and the cutting device (23) or the center of the feed rollers (25) of the feed (5) on the other hand corresponds to the feed length or an integer multiple of the feed length. A conveyor system according to any one of claims 1 to 9, wherein a cutting and / or a connecting head of the cutting device (23) and the connecting device (23) by means of a drive device with servomotor, servo and ball screw drive is driven. Strip system according to one of claims 1, 2 and 5 to 10, whose cutting head is designed as a laser or plasma cutting head. Strip system according to one of claims 1 to 11, whose connecting head is designed as a laser welding or plasma welding head. A belt installation according to any one of claims 1 to 12, wherein the cutting device (23) cuts according to specifiable in a workpiece memory data. Belt system according to one of claims 1 to 10 or 13, whose connecting device (23) is designed as a clinching device. A strip line for straightening strip material (3) wound into coils (2) and for introducing same into a further processing machine, comprising an unwinder (4) on which the coil (2) can be held and the strip material (3) can be unwound from the coil (2) , a feed (5), by means of which the strip material (3) from the belt system (1) to the further processing machine can be transferred, and a straightening machine (6) between the unwinder (4) on the one hand and the feed (5) on the other hand movable, suspended from one or more guides (7) and the unwinder side band inlet (9) is raised and lowered, preferably according to one of claims 1 to 14, characterized in that the straightening machine (6) is associated with the belt inlet and belt outlet side in each case a centering device (28, 29) for centering the strip material (3) in the horizontal direction. A conveyor system according to claim 15, in which the upper straightening rollers (27) of the straightening machine (6) are held in a releasable manner, preferably in a few seconds, and belt side guides (30, 31) of the centering devices (28, 29) can be centrally adjusted after the upper straightening rollers (27) have been ventilated are. A belt system according to claim 16, wherein the band side guides (30, 31) of the centering devices (28, 29) are adjustable by means of positioning motor screw drives. Belt system according to claim 16 or 17, with displacement sensors or fork light barriers, by means of which the travel path of the band side guides (30, 31) of the centering devices (28, 29) detectable and the band side guides (30, 31) of the centering devices (28, 29) in the bandwidth distance in the centering position are adjustable. A conveyor system according to any one of claims 16 to 18, the band side guides (30, 31) are formed as hardened and ground band side guide rails. A strip line for straightening strip material (3) wound into coils (2) and for introducing same into a further processing machine, comprising an unwinder (4) on which the coil (2) can be held and the strip material (3) can be unwound from the coil (2) a feed (5) by means of which the strip material (3) can be transferred from the strip line (1) to the further processing machine, and a straightening machine (6) which can be moved between the unwinder (4) on the one hand and the feed (5) on the other hand, suspended on one or more guides (7) and the unwinder-side belt inlet (9) is raised and lowered, preferably according to one of claims 1 to 19, characterized in that the feed side belt outlet (12) of the leveler (6) can be raised and lowered is that the straightening machine (6) or the band inlet (9) of the straightening machine (6) is adjustable in all outer diameters of the coil (2) in an optimal Bandanfangübernahmestellung, and that the straightening machine (6) or the Banda Spout (12) of the straightening machine (6) at different vertical positions of the feed (5) or the feed (5) following further processing machine is adjustable in an optimal initial tape transfer position. A conveyor system according to claim 20, wherein a pivot bearing (13) of the straightening machine (6) about which the unwind side band inlet (9) during lifting and lowering thereof is pivotable in the vertical direction with respect to the guide or the guides (7) is adjustable , A conveyor system according to claim 20 or 21, wherein a horizontal positioning drive (8) for the straightening machine (6) and / or a vertical positioning drive (10) for the tape inlet (9) of the straightening machine (6) and / or a vertical positioning drive (14) for the strip outlet (12) of the straightening machine (6) has or have a drive device with at least one servo motor, servo inverter and ball screw drive. A belt system according to claim 22, wherein the vertical positioning drive (10) for the belt inlet (9) of the straightening machine (6) comprises a servomotor, servo converter and ball screw drive and the vertical positioning drive (14) for the belt outlet (12) of the straightening machine (6) two servomotors , Servo inverter and ball screw drives have. A conveyor system according to claim 20 or 21, wherein a horizontal positioning drive (8) for the straightening machine (6) and / or a vertical positioning drive (10) for the tape inlet (9) of the straightening machine (6) and / or a vertical positioning drive (14) for the strip outlet (12) of the straightening machine (6) has or have a drive device with at least one hydraulic actuating cylinder, a path positioning and a servo valve. A belt system according to any one of claims 20 to 24, wherein a horizontal positioning drive (8) for the straightening machine (6) comprises a servo gear motor, a precision gear and a precision rack. Belt system according to one of claims 20 to 25, in which the horizontal and the vertical positioning drives (8, 10, 14) are simultaneously operable. Strip system according to one of Claims 20 to 26, in which the unwind side band feed (9) of the leveler (6) between an upper position and a lower position is adjustable or pivotable, so that the beginning of the tape wound coil material (3) from the vertically upper and lower in the vertical direction peripheral portion of the coil (2) in the tangential direction of the coil (2) expiring beginning of the strip aligned straightening machine (6) can be inserted. A conveyor system according to any one of claims 1 to 27, wherein the outer diameter of a coil (2), e.g. can be detected by means of a laser-analog light barrier, and the distance of the leveler (6) to the unwinder (4) and the inclination of the leveler (6) depending on the detected outer diameter of the coil (2) are preferably automatically adjustable. A conveyor system according to any one of claims 1 to 28, wherein a withdrawal brake torque of a drain brake of the unwinder (4) in dependence on the outer diameter of the coil (2) is controllable. Strip system according to one of claims 1 to 29, whose straightening machine (6) at the belt inlet (9) has a belt end sensor, by means of which it can be detected that only a residual belt is present from the coil (2). Strip system according to one of claims 20 to 30, whose straightening machine (6) by means of its horizontal positioning drive (8) in standing straightening machine rolls with the belt speed in the horizontal direction is movable. Belt system according to one of claims 20 to 31, wherein the feed (5) a Vorschubwegaufnehmer is arranged, by means of which the belt speed detected and to a control device of the horizontal positioning drive (8) of the leveler (6) can be forwarded. A conveyor system according to claim 31 or 32, wherein at a predetermined distance, e.g. 1 to 2, preferably 1.5 m, upstream of the inlet side (17) of the feed (5) by means of the straightening machine (6) approachable sensor is arranged by means of which the horizontal positioning drive (8) of the leveler (6) for a predetermined distance , eg 0.5 to 1.5, preferably 1 m, in a creep speed is adjustable. A strip line for straightening strip material (3) wound into coils (2) and for introducing same into a further processing machine, comprising an unwinder (4) on which the coil (2) can be held and the strip material (3) can be unwound from the coil (2) a feed (5) by means of which the strip material (3) can be transferred from the strip line (1) to the further processing machine, and a straightening machine (6) which can be moved between the unwinder (4) on the one hand and the feed (5) on the other hand, suspended on one or more guides (7) and whose unwinder-side belt inlet (9) can be raised and lowered, preferably according to one of claims 1 to 33, characterized in that the straightening machine (6) of the belt system (1) at its belt inlet (9 ) has a separating device (22) by means of which a band residue or bandend hook of the unwinding (4) unwound strip material (3) is automatically forcibly detachable. A conveyor system according to claim 34, wherein in the region of the inlet side of the separating device (22) there is arranged a hinged band transfer table (18). Strip system according to claim 34 or 35, whose separating device (22) is designed as a compact scissors. A belt system according to claim 36, wherein the shears (22) are also provided for the Schopfen the beginning of the strip material. Belt system according to claim 34 or 35, whose separating device (22) is designed as a separating hunter with a high speed driven cutting disc, the frequency controlled by a geared motor and a ball screw drive rail guided at an angle of 90 degrees to the direction of the strip material (3) is movable. A belt installation according to claim 38, wherein the travel speed of the high speed rotating cutting disc is programmable in dependence on the strip thickness of the strip material (3) in a workpiece data memory. Strip system according to claim 34 or 35, whose separating device (22) is designed as a plasma cutting or laser cutting device.

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