EP2162249B1 - Straightening machine having a straightening roller rapid-change system, and a method for rapidly changing straightening rollers of a straightening machine - Google Patents

Abstract

The present invention relates to a straightening machine (1) having a straightening roller rapid-change system, having an upper and a lower housing (7, 3) for receiving a plurality of upper and lower straightening rollers (9, 11), all or only some of which are driven and serve for straightening metallic material, wherein the upper and lower straightening rollers (9, 11) are mounted at each of their ends (56) and the driven straightening rollers are connected at one of their ends to a drive shaft (21, 23), and wherein the drive shafts (21, 23) can be driven via at least one distributor gearbox (19) by means of at least one motor (17), and the drive shafts (21, 23), the at least one distributor gearbox (19) and the at least one motor (17) are situated on one side of the straightening machine (1). The straightening machine according to the invention is distinguished in that the upper straightening rollers (9), at the side situated opposite the side of the drive shafts (21), are each rotatably mounted by means of at least one rolling bearing (39) in an upper, front bearing strip (25) which can be detachably connected to the upper housing (7), in that the lower straightening rollers (11), at the side situated opposite the side of the drive shafts (23), are each rotatably mounted by means of at least one rolling bearing (39) in a lower, front bearing strip (27) which can be detachably connected to the lower housing (3), in that, following removal of the upper/lower front bearing strip (25, 27), the upper/lower straightening rollers (9, 11) are accessible and can be moved individually out of the straightening machine by an axial movement, in that the straightening roller rapid-change system has a receiving device (59) for receiving the upper/lower straightening rollers (9, 11) that have been moved out, and in that the receiving device (59) has, for the purpose of mounting the straightening rollers (9, 11), a plurality of system strips (67, 68) which run transversely to the axial direction of the straightening rollers (9, 11) and have indentations (77) on their upper side for receiving the straightening rollers (9, 11). The present invention also relates to a method for rapidly changing straightening rollers of a straightening machine.

Description

The present invention relates to a straightening machine with straightening rollers quick-change system and a method for quick change or for quick removal and installation of straightening rollers of a leveler and, where appropriate, their supports.

Roller straightening machines are used for straightening mostly metallic goods. Between two on gap d. H. Zigzag-shaped straightening roller rows arranged one another, the straightening material is moved through it so that it comes to elastic-plastic alternating movements such that the material to be straightened leaves the straightening machine in the planned state. In many cases, the straightening on impurities such as scaling, which fall off during the straightening process and collect and build up in the machine. Conventional straightening machines may further comprise support elements of straightening rollers in the form of support rollers intended to prevent unintentional bending of straightening rollers.

Due to the one hand, the contamination of the material to be machined and on the other hand, the wear of the straightening rollers, it is necessary to regularly clean the straightening rollers and possibly the support elements used for this purpose, and to replace when worn.

To accomplish this time-saving, it has been proposed to arrange the straightening rollers in a cassette, wherein the upper straightening rollers are arranged in a cassette and the lower straightening rollers are also arranged in a cassette.

Such a cassette changing system shows, for example, the EP 0 142 882 A1 in which it is proposed to arrange the upper straightening rollers in a carrier which is in vertical direction, after which the cassette can be replaced.

In straightening machines with cassette changing device, the upper and lower straightening roller sets (bearing strips, support rollers and straightening rollers) are each in a block, i. H. summarized in a cassette, for example by mounting the parts on a common base plate. The cassettes can be moved out of the machine either individually or together, usually with the aid of a special device, and placed on a rack in front of the machine. For cleaning or maintenance of straightening rollers and support rollers cassettes must be disassembled, which is very time consuming. In order to keep the downtimes of the machines and possibly also of the entire processing systems very short, replacement cassettes are provided, which are installed in exchange with the removed cassette in the leveler. Disadvantage of this design is, inter alia, a significantly increased design effort with correspondingly high costs, not only correspondingly high material usage, but also corresponding processing time. These disadvantages are even greater with large roller leveling machines.

Therefore, solutions have already been proposed for replacing individual rolls in straightening machines in order to avoid the expense of cassette replacement systems.

From the patent DD 108 665 a roll changing device on sheet metal straightening machines is known in which the object is to be achieved to achieve the change of leveling rolls without disassembly of the drive system while maintaining the group drive and the possibility of convex and concave Anstellens the straightening rollers. As a solution, it is proposed that the outstanding shaft ends, which are connected in bearing housings dual bearing shafts shrunk onto symmetrically shaped straightening roller sleeves positively connected as a plug connection on the drive shaft and the drive opposite bearing side, the shaft ends with a narrow cylinder-like centerpiece and on both sides subsequent cones are formed. The disadvantage here is that a removal of the complete bearing housing, ie the removal of the upper housing block, is necessary to the straightening rollers get. This means a complete disassembly of straightening machines, which involves the disadvantage of a considerable amount of time.

The applicant has already proposed a straightening machine with a straightening roller quick-change system, having upper and lower housings, for receiving a plurality of upper and lower straightening rollers, all or only partially driven, for straightening metallic material. The upper and lower leveling rolls are supported at each of their ends, and the driven leveling rolls are connected at one of their ends to a drive shaft. The drive shafts are drivable via at least one transfer case by means of at least one motor, and the drive shafts, the at least one transfer case and the at least one motor are located on one side of the leveler.

The present invention has for its object to provide a straightening machine with straightening roller quick change system, especially for large Walzenrichtmaschinen, in which the downtime for removal and installation and cleaning of straightening rollers and the entire straightening unit are reduced, in addition, the handling should be simplified without causing the cost of a cartridge solution.

Furthermore, the present invention seeks to provide a correspondingly inexpensive method for quickly changing straightening rolls of a leveler and, where appropriate, their supports.

The straightening machine according to the invention with straightening roller quick-change system is characterized in that the upper straightening rollers on the side opposite to the drive shafts side in an upper front bearing strip, which is detachably connected to the upper housing, are each rotatably supported by at least one rolling bearing, that the lower straightening rollers on the side of the drive shafts opposite side in a lower front bearing bar, which is detachably connected to the lower housing, each rotatably supported by at least one rolling bearing, that after removing the upper / lower front bearing strip, the upper / lower straightening rollers accessible are and by an axial Movement are individually moved out of the straightening machine, that the straightening roller quick-change system for receiving the moved out upper / lower straightening rollers has a receiving device (59), and that the receiving device for supporting the straightening rollers has a plurality of system strips which extend transversely to the axial direction of the straightening rollers, and have on their upper side indentations for receiving the straightening rollers.

The bearings remain, depending on the embodiment, in the bearing strips or on the straightening rollers.

This ensures that with a few simple steps the straightening rollers are freely accessible and can be moved individually from the straightening machine in a simple manner. This can be done in no time replacement or cleaning of straightening rollers and their supports and they can then be moved back in the straightening machine in the reverse direction and, after the corresponding bearing bar is mounted again in a short time, the straightening machine can be put into operation again become.

This advantage manifests itself, in particular, in the case of large roller leveling machines, in which it can be avoided that the entire superstructure of the leveler must be removed before the upper or lower leveling rollers are accessible.

With particular advantage, the straightening rollers can thus be pulled out of the straightening machine manually or with the aid of a pull-pushing device and be deposited directly on the receiving device, or be pushed back into the straightening machine by the receiving device. The receiving device may advantageously be designed table-shaped.

Advantageously, by the plurality of system strips, which extend transversely to the axial direction of the straightening rollers and have on their upper side indentations for receiving the straightening rollers, a lateral slippage of the straightening rolls avoided and the straightening rollers can be cleaned and checked accordingly. They also maintain their order or order so that it can be established which straightening rollers were particularly stressed or with knowledge of the particular stress these straightening rollers can be routinely replaced according to earlier than the less stressed.

It is particularly advantageous that the straightening rollers are guided both radially and axially at both ends, whereby a one-sided axial fixed bearing is avoided. This increases in particular the simplicity of the design of the respective straightening roller bearing.

In conventional straightening machines, there is the great disadvantage that removal of the individual straightening rollers leads to an offset of the drive shaft axes in the direction of gravity, so that a complex threading of the re-used straightening rollers for connecting to the drive shafts is necessary. Advantageously, a receptacle for holding the upper drive shaft is provided according to the invention for each upper drive shaft. Thus, a lateral displacement of the drive shaft after releasing the connection with this is avoided and the replaced straightening roller can be connected by simple axial displacement with the associated drive shaft again.

In the preferred embodiment of the straightening machine according to the invention, the connection between the lower drive shaft and the lower straightening roller has a coupling sleeve. In order to avoid damage to the drive shaft with coupling sleeve after removal of the straightening roller, a support means is provided which supports the coupling sleeve. For example, the support means may be in the form of a holding plate, by which the coupling sleeve is held in its horizontal position after removal of the straightening roller.

Furthermore, it is advantageous that the receiving device has a platform. This platform contains the system bars. The platform serves to accommodate not only the system rails for supporting the straightening rollers, but also for receiving storage facilities for support roller blocks, as will be described in more detail below.

Advantageously, the height of the platform is adjustable and thus to the corresponding Level of the upper and lower straightening rollers and the upper and lower support roller blocks customizable.

Furthermore, the receiving device may advantageously comprise a system pallet, which then serves to receive the straightening rollers and / or support roller blocks and which is designed such that it is by means of forklift or crane back to the straightening machine and again transported away.

Advantageously, the system pallet can be placed fixed on the platform. As a result, it is advantageously achieved that, in particular, particularly heavy straightening rolls can be laid thereon and stored in a stationary manner. Depending on requirements, the straightening rollers can then be placed on the system pallet on site, ie on the straightening machine or by means of a forklift or crane, to the desired location or again to the straightening machine.

The receiving device may further comprise wheels for forming a mobile carriage, so that it can be moved in a simple manner.

The present invention also includes straightening machines further comprising upper and lower straightening roller supports, such as support roller blocks each having a plurality of support rollers for supporting the associated upper and lower straightening rollers. According to the invention, the support roller blocks are slidably mounted and arranged on stop or bearing strips floating and arranged self-centering on the associated straightening rollers. As a result, the support roller blocks as easy as the straightening rollers can be moved out of the straightening machine and used again in this. Furthermore, it is advantageous that for positioning the support roller blocks in the transverse direction, d. H. Transverse to the transport direction of the material to be straightened, spacers are provided.

Advantageously, the support roller blocks on the system pallets are displaced, and this is accomplished by means of rollers equipped with bars.

In order to enable a particularly easy and manual shifting of the support roller blocks, these are weight relieving via spring-loaded pressure pads with rollers mounted, whereby a simple moving out of the leveler or a slight insertion of the corresponding support roller blocks is made possible together with the support rollers.

• Lösen und Entfernen einer oberen vorderen Lagerleiste, in der die oberen Richtwalzen jeweils mittels eines Wälzlagers gelagert sind, und/oder einer unteren vorderen Lagerleiste, in der die unteren Richtwalzen jeweils mittels eines Wälzlagers gelagert sind, auf der der Seite der Antriebswellen entgegengesetzten Seite, wobei die Wälzlager entweder zusammen mit der Lagerleiste oder bei Fixierung auf den Richtwalzen mit diesen entfernt werden,
• Herausbewegen der einzelnen, frei zugänglichen Richtwalzen in axialer Richtung der Richtwalzen auf die für die Richtwalzen vorgesehenen Systempaletten,
• gegebenenfalls Herausbewegen der jetzt frei zugänglichen Abstützungen auf die dafür vorgesehenen Systempaletten,
• Reinigung der Richtwalzen und Abstützungen auf den Systempaletten,
• Hineinbewegen der gereinigten oder neuen Abstützungen und Richtwalzen in umgekehrter Reihenfolge, und
• Aufsetzen der oberen und/oder unteren Lagerleiste und Befestigen der Lagerleiste am oberen bzw. unteren Gehäuse der Richtmaschine.

The present invention also includes a method for rapidly changing straightening rolls of a straightening machine having an upper casing and a lower casing for accommodating a plurality of upper and lower straightening rolls, all or only partially driven, for straightening metallic material upper and lower straightening rollers are mounted at each end thereof and the driven straightening rollers are connected at one of its ends to a drive shaft, wherein the drive shafts ggfls if necessary. via at least one transfer case (19) are drivable by means of at least one motor and the drive shafts, the at least one transfer case and the at least one motor are located on one side of the leveler, the method comprising the following steps:

• Loosening and removal of an upper front bearing strip, in which the upper straightening rollers are each mounted by means of a rolling bearing, and / or a lower front bearing strip, in which the lower straightening rollers are each mounted by means of a rolling bearing, on the side of the drive shafts opposite side the bearings are either removed together with the bearing bar or when fixing on the straightening rollers with these,
• Moving out of the individual, freely accessible straightening rolls in the axial direction of the straightening rolls onto the system pallets provided for the straightening rolls,
• if necessary moving out of the now freely accessible supports on the system pallets provided for this,
• Cleaning of straightening rollers and supports on the system pallets,
• Moving the cleaned or new supports and straightening rollers in reverse order, and
• Place the upper and / or lower bearing strip and fasten the bearing strip on the upper or lower housing of the leveler.

This ensures that the straightening rollers and their supports are directly accessible by simply loosening and removing the corresponding bearing bar and can be moved out of the straightening machine in the easiest way and after cleaning or replacement can be moved in the simplest way and then used the bearing bar again becomes. This leads to a considerable reduction in time for this process compared to conventional change systems and thus to a significant increase in productivity. Depending on the state of the material to be processed, it may be necessary to have to clean the straightening rollers, in particular the lower straightening rollers, at shorter intervals, for example daily. The temporal advantage is not least also the fact that when changing the straightening rollers, only the bearing bar must be removed and no other components of the straightening machine, as usual in the prior art, must be removed and reinstalled.

Furthermore, it is advantageous that the straightening rollers supporting, floating arranged Stützrollenböcke are manually removed from the straightening and removable again. They can thus be easily cleaned and replaced if necessary and then manually pushed back into the straightening machine. This requires only a few steps and avoids additional tools.

Furthermore, it is advantageous that also the straightening rollers supporting floating arranged Stützrollenböcke are manually or by means of driven pulling / pushing device from the leveler removable and reinserted. As a result, the entire straightening unit can be changed in a simple manner, whereby the recurring occurring cleaning request can be dealt with quickly and easily with appropriate contamination.

Figur 1

eine Seitenansicht einer Ausführungsform der erfindungsgemäßen Richtmaschine;

Figur 2

eine teilweise geschnittene Draufsicht auf die Richtmaschine nach Figur 1;

Figur 3

eine Vorderansicht der erfindungsgemäßen Richtmaschine von Figur 1;

Figur 4

eine prinzipielle Teilschnittdarstellung der Lagerung der oberen und unteren Richtwalzen;

Figur 5

eine Seitenansicht der erfindungsgemäßen Richtmaschine von Figur 1 mit einer Aufnahmevorrichtung des Richtwalzen-Schnellwechsel- systems, wobei der Vorgang des Wechselns der oberen Richtwalzen dargestellt ist;

Figur 6

eine ähnliche Darstellung wie jene von Figur 6, wobei jedoch der Vor- gang des Auswechselns der unteren Richtwalze dargestellt ist;

Figuren 7 und 8

den Vorgang des Schnellwechselns der oberen Richtwalzen;

Figuren 9 und 10

den Vorgang des Schnellwechselns der unteren Richtwalzen;

Figur 11

eine Seitenansicht, ähnlich zu jenen von Figuren 7 bis 10 mit heraus- bewegten oberen und unteren Richtwalzen;

Figur 12

in Vorderansicht und teilweise geschnitten eine weitere Ausführungs- form der Aufnahmevorrichtung des Richtwalzen-Schnellwechsel- systems mit je einem Satz oberer und unterer Richtwalzen;

Figur 13

eine Seitenansicht der erfindungsgemäßen Richtmaschine mit Richt- walzen-Schnellwechselsystem mit einer weiteren Ausführungsform der Aufnahmevorrichtung und teilweise herausbewegter oberer Stützrol- lenböcke;

Figur 14

in Vorderansicht und teilweise geschnitten die Aufnahmevorrichtung für die oberen Stützrollenböcke gemäß Figur 13;

Figur 15

eine weitere Ausführungsform der Aufnahmevorrichtung in Vorderan- sicht für besonders schwere Stützrollenböcke;

Figur 16

eine Seitenansicht der erfindungsgemäßen Richtmaschine mit Richt- walzen-Schnellwechselsystem gemäß Figur 1 mit teilweise herausbe- wegten unteren Stützrollenböcken; und

Figur 17

eine Vorderansicht auf die Aufnahmevorrichtung gemäß Figur 16.

Further details, features and advantages of the present invention will become apparent from the following description with reference to the drawings. It shows:

FIG. 1

a side view of an embodiment of the straightening machine according to the invention;

FIG. 2

a partially sectioned plan view of the leveler after FIG. 1 ;

FIG. 3

a front view of the straightening machine according to the invention of FIG. 1 ;

FIG. 4

a schematic partial sectional view of the storage of the upper and lower straightening rollers;

FIG. 5

a side view of the straightening machine according to the invention of FIG. 1 with a receiving device of the straightening roller quick-change system, wherein the process of changing the upper straightening rollers is shown;

FIG. 6

a representation similar to that of FIG. 6 but showing the process of replacing the lower straightening roller;

FIGS. 7 and 8

the process of quick change of upper straightening rollers;

FIGS. 9 and 10

the process of quick change of the lower leveling rolls;

FIG. 11

a side view similar to those of FIGS. 7 to 10 with moved out upper and lower leveling rolls;

FIG. 12

in front view and partially cut another embodiment of the receiving device of the straightening roller quick-change system with one set of upper and lower straightening rollers;

FIG. 13

a side view of the straightening machine according to the invention with straightening roller quick-change system with a further embodiment of the Receiving device and partially moved upper support roller blocks;

FIG. 14

in front view and partially cut the receiving device for the upper support roller blocks according to FIG. 13 ;

FIG. 15

a further embodiment of the receiving device in front view for particularly heavy support roller blocks;

FIG. 16

a side view of the straightening machine according to the invention with straightening roller quick-change system according to FIG. 1 with partially moved lower Stützrollenböcken; and

FIG. 17

a front view of the receiving device according to FIG. 16 ,

In the figures, the same components are designated by the same reference numerals.

In FIG. 1 a straightening machine 1 according to the invention is shown in side view. The straightening machine has a lower housing 3 (for example in the form of a machine bed) on which the straightening unit 5 is constructed consisting of an upper housing 7 with upper straightening rollers 9 and lower straightening rollers 11 mounted in the lower housing 3.

To support the upper straightening rollers 9 upper support roller blocks 13 and lower support roller blocks 15 are provided for supporting the lower straightening rollers. To drive the upper and lower straightening rollers is a motor 17 which drives a transfer case 19 upper drive shafts 21 and lower drive shafts 23. The upper drive shafts 21 are designed as drive shafts and connected to the upper straightening rollers 9. The lower drive shafts 23 are formed as rigid drive shafts and connected to the lower straightening rollers 11.

For storage of the upper straightening rollers 9, a front upper bearing bar 25 for supporting the lower straightening rollers 11, a front lower bearing bar 27 is provided, wherein the front bearing rails 25 and 27 on that side of the straightening machine are arranged, which is opposite to the side at which the straightening roller drive 17, 19, 21, 23 is located.

On this page, the upper straightening rollers 9 are mounted by means of a rear upper bearing bar 29 and the lower straightening rollers 11 are mounted by means of a rear lower bearing bar 31.

In FIG. 2 the straightening machine 1 is shown in plan view without the upper housing 7. One recognizes the front upper bearing strip 25, which by means of three screws 26 on the upper housing 7 (see. FIG. 1 ) is attached.

In FIG. 3 is in front view, the straightening machine 1 of the invention FIGS. 1 and 2 shown. The view is the view from the right in the FIGS. 1 and 2 , wherein schematically the upper straightening rollers 9 and the lower straightening rollers 11 are shown, between which the straightening gap 10 is located. The upper support roller blocks 13 and the lower support roller blocks 15 have a plurality of support rollers 16, which are arranged laterally offset from one another.

The upper support roller blocks 13 have a plate-shaped holding portion 33 which projects slightly on both sides and cooperates on both sides with an L-shaped upper stop bar 35. As a result, an extremely simple support for the upper support roller blocks 13 is provided, which can be changed by simply moving in position.

In FIG. 4 is again a schematic representation of the straightening machine 1 according to the invention with upper straightening rollers 9 and lower straightening rollers 11 and their storage by needle bearings 39 and combi bearings 41 in the front upper and lower and rear upper and lower bearing strips 25, 27, 29, 31 shown. How out FIG. 4 Particularly clear, after loosening the screws 26 and removing the front upper and / or lower bearing bar 25, 27, a free access to the upper straightening rollers 9 and / or lower straightening rollers 11 is provided. Due to the peg-shaped bearing portions 56, whose cross section is smaller than the cross section of the processing portions 57 of the upper and lower straightening rollers 9, 11, it is readily apparent that by simply pulling on the upper and lower Straightening rollers, which can still be easily pulled out of the bearings 39 and 41 in the upper rear bearing strip 29 and upper rear bearing strip 31 bearing portions 56 and thus the upper and lower straightening rollers 9 and 11 along their axes X can be moved axially accordingly. The bearings 29, 41 remain, depending on the embodiment, in the bearing strips or on the straightening rollers.

In FIG. 5 schematically the removal of the upper straightening rollers 9 is shown. After removing the upper front bearing strip 25, this is placed on a receiving device 59. The receiving device 59 comprises in the embodiment according to FIG. 5 a height adjustable by means of adjusting 62 lifting table 61, which has an upper platform 63. The adjusting device 62 is able to extend and retract a corresponding rod 64 and thus to change the height of the upper platform 63.

On the upper platform 63, a system palette 65 is arranged. This will be further described below. On the system pallet 65 system strips 67 are arranged in the transverse direction to the upper straightening rollers, which serve to support the upper straightening rollers 9. How out FIG. 5 easily seen, can be done by simply pulling out the upper straightening roller 9 on the system strips 67 an extremely simple and fast removal of the upper straightening roller from the leveler 1. The upper straightening rollers 9 are freely accessible on the receiving device 59 and can be cleaned, tested and replaced accordingly. Furthermore, it can be seen that a correspondingly simple and quick pushing back the upper straightening rollers 9 in the leveler back is possible. The receiving device 59 in the embodiment according to FIG. 5 in particular serves to accommodate heavy straightening rollers and can be moved accordingly by crane or forklift.

FIG. 6 shows a similar representation as FIG. 5 , but with the difference that now reach the lower straightening rollers 11 for removal. Accordingly, the platform 63 and resting on her system pallet 65 has been lowered so that a horizontal alignment of the recordings of the system strips 67 is achieved with the lower straightening rollers 11.

In the FIGS. 7 and 8 the removal of the upper straightening rollers is shown, wherein as a receiving device 59, a lift truck is provided which has corresponding wheels 70 for its movement. Also, the lift truck 69 is adjustable in height. After placing the upper bearing strip 25 on the system pallet 65 on the platform 63 of the receiving device 59 according to FIG. 7 the upper straightening rollers 9 are pushed onto the system strips 67, as seen from FIG. 8 seen.

In the FIGS. 9 and 10 is the moving out of the lower straightening rollers 11 similar to the upper straightening rollers 9 of FIGS. 7 and 8 shown. The platform 63 was adapted by means of lifting truck 69 according to the height of the lower straightening rollers 11.

In FIG. 11 is then shown that both the upper straightening rollers 9 and the lower straightening rollers 11 were mounted on the lift truck 69, 9 further system strips 68 were placed on the system strips 67 on the upper straightening rollers. The receiving device 59 is thus able to receive both the front upper 25 and the front lower system bar 27 and the upper and lower straightening rollers 9 and 11.

Another embodiment of the receiving device shows the FIG. 12 , The system strips 67 and 68 are connected to each other by means of pins 73 and the lower system strips 67 are also connected by means of pins 73 with the system pallet 65, as shown in the Figures 5 and 6 is shown in a side view. This pallet 65 rests on the platform 63 and can be raised and transported, for example, in the space 64 by forks of a forklift. Alternatively eyelets 75 are provided for transport, in the corresponding hooks of a crane can be suspended, whereby the system pallet 65 can be transported accordingly.

As can further be seen, the upper edge region of the system strips 67 and the lower and upper edge region of the system strips 68 are adapted to the upper and lower straightening rollers 9, 11 by corresponding indentations or depressions 77 are provided, which the straightening rollers 9, 11 at a lateral slippage prevent. Thus, the straightening rollers 9 and 11 are transport safe on the system strips 67 and 68.

In FIG. 13 the removal or replacement of the upper support roller blocks 13 is shown. It can again be used the receiving device 59 with lifting table 61 with adjusting device 62, upper platform 63 on which the system pallet 65 is placed. As seen from the front view FIG. 14 it can be seen 13 longitudinal rails 79 are used to guide the upper support roller blocks, on which the support rollers 16 slide. The embodiment according to FIG. 14 is suitable for lighter upper support roller blocks. For larger straightening machines and larger upper support roller blocks 13, these are moved on side rotatable rollers 81, as in FIG Fig. 15 shown.

In FIG. 16 the removal or replacement of the lower support roller blocks 15 is shown. The receiving device 59 has been further lowered by means of lifting table 61 and on the system pallet 65, a rail 83 has been set with rollers 85, so that the lower support roller blocks 15 can be easily moved over the rollers 85.

The FIG. 17 is a front view of the embodiment of the receiving device according to FIG. 16 , To guide the support roller blocks 15 L-legs 90 are provided which have a round rod 91 at its upper end. This leads the support roller block 15 in the two grooves 92 when pulling out on the system pallet 65th

Thus, with the present invention, both the upper and lower straightening rollers and the upper and lower support roller blocks can be moved out of the straightening machine in the simplest manner, deposited on a corresponding receiving device and then moved back into the straightening machine in a simple manner by essentially horizontal displacement. Due to the simple storage by means of storage strips can be done after a very short time access to the upper and lower straightening rollers and it is avoided further dismantling of components of the straightening machine. Thus, it is particularly advantageous when cleaning the corresponding components of the straightening unit saves a considerable amount of time.

Claims (15)

1. Straightening machine (1) with straightening roller rapid change system, having an upper and a lower housing (7, 3) for receiving a plurality of upper and lower straightening rollers (9, 11), all or only some of which are driven and serve for straightening metal material,
   wherein the upper and lower straightening rollers (9, 11) are mounted at each of their ends (56) and the driven straightening rollers are connected at one of their ends to a drive shaft (21, 23), and
   wherein the drive shafts (21, 23) can be driven via at least one distribution gearbox (19) by means of at least one motor (17) and the drive shafts (21, 23), the at least one distribution gearbox (19) and the at least one motor (17) are situated on one side of the straightening machine (1),
   characterised in that
   the upper straightening rollers (9), at the side situated opposite the side of the drive shafts (21), are each rotatably mounted by means of at least one roller bearing (39) in an upper, front bearing strip (25) which can be detachably connected to the upper housing (7),
   the lower straightening rollers (11), at the side situated opposite the side of the drive shafts (23), are each rotatably mounted by means of at least one roller bearing (39) in a lower, front bearing strip (27) which can be detachably connected to the lower housing (3),
   following removal of the upper / lower front bearing strip (25, 27) the upper / lower straightening rollers (9, 11) are accessible and can be moved individually out of the straightening machine by an axial movement,
   the straightening roller rapid change system comprises a receiving device (59) for receiving the upper / lower straightening rollers (9, 11) that have been moved out, and
   the receiving device (59) comprises, for the purpose of mounting the straightening rollers (9, 11), a plurality of system strips (67, 68) which extend transversely to the axial direction of the straightening rollers (9, 11) and comprise indentations (77) on their upper side for receiving the straightening rollers (9, 11).
2. Straightening machine according to claim 1, characterised in that the straightening rollers (9, 11) are guided both radially (39) and axially (41) at both ends (56).
3. Straightening machine according to claim 1 or 2, characterised in that a receiving element is provided in (47) for each upper drive shaft (21) for holding the upper drive shaft (21).
4. Straightening machine according to one of the claims 1 to 3, wherein the connection between the lower drive shaft (23) and the lower straightening roller (11) comprises a coupling sleeve (53), characterised in that a support device (55) is provided which supports the coupling sleeve (53).
5. Straightening machine according to one of the claims 1 to 4, characterised in that the receiving device (59) comprises a platform (63) with an adjustable height.
6. Straightening machine according to one of the claims 1 to 5, characterised in that the receiving device (59) comprises a system pallet (65), which serves to receive the straightening rollers (9, 11) or support roller blocks (13, 15) and is designed so that it can be transported to and away from the straightening machine by means of a forklift truck or crane.
7. Straightening machine according to claim 6, characterised in that the system pallet (65) can be placed in a fixed manner on the platform (63) of the receiving device (59).
8. Straightening machine according to one of the claims 1 to 7, characterised in that the receiving device (59) comprises wheels (70) for forming a movable carriage (69).
9. Straightening machine according to one of the claims 1 to 8, wherein furthermore upper and lower support roller blocks (13, 15) are respectively provided with a plurality of support rollers (16) for supporting the assigned upper and lower straightening rollers (9, 11), characterised in that the support roller blocks (13, 15) are arranged in a self-centring manner on the assigned straightening rollers (9, 11) so that they can be displaced and are floating by means of stop and bearing strips (25, 27, 29, 31).
10. Straightening machines according to claim 9, characterised in that spacing elements (88) are provided for positioning the support roller blocks (13, 15) in transverse direction.
11. Straightening machines according to claim 9 or 10, characterised in that the support roller blocks (13, 15) can be displaced onto the system pallets (65).
12. Straightening machines according to one of the claims 9 to 11, characterised in that the support roller blocks (13, 15) are mounted via sprung pressure elements with rollers in a weight relieving manner.
13. Method for rapid change of straightening rollers (9, 11) of a straightening machine (1) which comprises an upper housing (7) and a lower housing (3) for receiving a plurality of upper and lower straightening rollers (9, 11), all or only some of which are driven and serve for straightening metal material, wherein the upper and lower straightening rollers (9, 11) are mounted at each of their ends and the driven straightening rollers are connected at one of their ends to a drive shaft (21, 23), wherein the drive shafts (21, 23) can possibly be driven via at least one distribution gearbox (19) by means of at least one motor (17) and the drive shafts, the at least one distribution gearbox and the at least one motor are situated on one side of the straightening machine, characterised in that the method comprises the following steps:

    - releasing and removing an upper front bearing strip (25), in which the upper straightening rollers (9) are respectively mounted by means of a roller bearing (39), and / or a lower front bearing strip (27), in which the lower straightening rollers (11) are respectively mounted by means of a roller bearing (39), at the side situated opposite the side of the drive shafts, wherein the roller bearings are either removed together with the bearing strip or upon fixing on the straightening rollers with these,

    - moving out the individual, freely accessible straightening rollers (9, 11) in axial direction of the straightening rollers onto the system pallets provided for the straightening rollers,

    - possibly moving out the now freely accessible supports onto the system pallets provided for them,

    - cleaning the straightening rollers and supports on the system pallets,

    - moving in the cleaned or new supports and straightening rollers in reverse sequence, and

    - placing the upper and / or lower bearing strip and fixing the bearing strip on the upper or lower housing of the straightening machine.
14. Method according to claim 13, characterised in that the support roller blocks (13, 15) arranged floating and supporting the straightening rollers can also be manually removed from and reintroduced into the straightening machine.
15. Method according to claim 13 or 14, characterised in that the straightening rollers and the support roller blocks can be removed and reintroduced by means of a driven pulling / pushing device.

Images