EP3028782B1 - Tool changing system and method - Google Patents

Description

The invention relates to a tool change system and a tool change method.

Corresponding tool change systems and methods are for rolling or stretching or transverse rolls, for example, from EP 2 368 647 A1 , of the DE 10 2005 056 649 B3 , of the EP 0 163 104 A2 , of the US 5,600,988 or even the DE 103 17 312 A1 in particular, in each case roller pairs are mounted horizontally one above the other on two roller bearings arranged on both sides of the roller pairs. Also from other pamphlets, such as from the DE 196 33 668 C1 , from the DE 10 2004 063 547 B3 and from the JP 6-47412 A , Roll change systems and methods are known in which, however, much more complex rolling machines are provided with a variety of rollers. Here are these arrangements except for the DE 103 17 312 A1 and the DE 10 2005 056 659 B3 to relatively complex embodiments in which a tool change frame allows both a transverse transport and a vertical transport of the rollers to be changed. Both the DE 10 2005 056 649 B3 as well as the DE 103 17 312 A1 on the other hand, it is important that the rollers can be removed vertically or in succession from shaft stubs of the roller carriers or that they can be returned to their position, which, however, requires considerable structural complexity and, in particular, can be retrofitted only with great difficulty.

Also reveal the DE 969 977 . DE 88 06 968 U1 and the US 5,735,788 arranged in a working position on a roller shaft of a roller and clamped over a clamping ring tools and quick release and -slöseeinheiten with a clamping elements that can be clamped and released in each case via relatively difficult to access actuators.

It is an object of the present invention to provide tool changing systems, tool changing methods, in which a tool change can be performed quickly and reliably and which can optionally also be used in existing rolling machines.

The object of the invention is achieved by tool change systems and tool changing method with the features of the independent claims. Other, if appropriate, also advantageous advantageous embodiments can be found in the dependent claims and the following description.

For example, a tool changing system for changing at least one arranged on a roller shaft in a working position tool comprising a tool change frame, a vertical transport and a transverse transport, retrofits and ensures a fast and reliable tool change when the tool change system is characterized in that the tool change system one of the Tool change rack has separate and with respect to the tool change rack separately transversely movable train frame, wherein the tool change frame has means for connection to the vertical transport and a tool holder for receiving the tool and the Zugrahmen a means for connection to the transverse transport and means for connection to the tool.

Such an arrangement is based on the separation between transverse transport, which attaches to the draw frame, which can be connected to the tool to be changed, and the vertical transport, which attaches to the tool change rack and which provided over the transverse transport. Accommodate tools in a tool holder or can provide for replacement.

The tools to be changed are assemblies which, when used as intended, come into direct contact with the workpiece to be machined. That is, the tools are used, for example, during stretching and / or transverse rolling for contouring and / or preforming of the workpiece.

Accordingly, a quick and reliable feasible tool change, which may possibly also be used in existing rolling, also by means of a tool change process for changing at least one arranged on a whale shaft in a working position tool, which in turn is arranged in a roll stand, which is characterized characterized in that first the tool is connected to a train frame to a composite and a transverse transport are connected to the Zugrahmen and thereafter the tool is moved by means of the transverse transport in conjunction with the Zugrahmen from its working position on a tool change rack or from the tool change rack in its working position.

The tool change frame can then be brought by means of the vertical transport of and / or to a change position, which can be ensured in the rule already with existing vertical transport easily reliable.

The separation between vertical transport and transverse transport allows great flexibility in the specific design of the tool change system, so that it can be readily adapted to existing rolling machines or systems. In particular, it is readily possible to carry out a corresponding tool change, even in more complex rolling machines or systems, if the associated components, such as the transverse transport, the Zugrahmen, the tool change frame and the like are designed to suit.

Preferably, when multiple tools are to be changed, the tools are joined into a composite while the change is being performed. In this way, it is possible to change the tool assembly together with the draw frame, which is accordingly connected to the tools, as a unit, which is accordingly time-saving.

Here, it is conceivable to connect the tools with each other to form a composite, so that they can be deposited together from a roll shaft or from a, in particular central, roll, for example peeled off, or placed on, for example slid. Likewise, the composite of tools on the train frame can be realized, so that the Zugrahmen connects the corresponding tools and thereby at the same time a connection of the Zugrahmens is provided with the tools.

It is understood that the combination of tools and traction frames is not necessarily limited to a roller and / or whale roller. Rather, it is conceivable that the pull frame can also connect tools of different rollers and / or whale rollers or be connected to them.

In the present case, a roller comprises a roller shaft with at least one tool arranged on the roller shaft, as can be found in particular in stretching rollers or transverse rollers. Since, for example, in the case of stretching and transverse rolls, two rolls, that is to say two roll shafts equipped with tools, interact between an upper and a lower roll shaft and thus also between an upper and lower roll.

In this respect, it may be possible for tools to be replaced by several assemblies for changing the tools. This can be done, for example, such that two or more tools are connected to each other on a whale shaft. That is, two or more tools are placed on a whale shaft and joined into a composite. However, it is also possible to join one or more tools arranged on an upper roller shaft to one another with one or more tools arranged on a lower roller shaft. For example, the respective outer tools of the upper and lower roller shaft can be connected to one another in a composite. Any combination of connected is basically possible.

It should be emphasized that the term "draw frame" does not reduce the corresponding assembly to a pure tie rod. Rather, this framework can also be charged with thrust loads and other carrying forces. However, if the loads of the pull frame are limited to the transverse displacements of the tools or rollers, the pull frame can be relatively easy to build, which in particular facilitates its handling even when used in more complex structures within the rolling machine.

On the other hand, the tool change frame can be much more stable and also designed to absorb loads during vertical movements, since the tool change frame can be positioned more flexibly by the separation between transverse transport and vertical transport or between a transverse and a vertical movement, so that its stable structure is not an obstacle becomes.

A quick and reliable feasible tool change, which may optionally be used in existing rolling machines is also by a tool changing system for changing at least one arranged on a whale shaft in a working position tool, comprising a tool change frame, a vertical transport and a change rack guide, the change rack guide as Slotted guide between the tool change frame and a guide support is formed, when the tool change system is characterized in that the slotted guide has an open top, the tool change frame with respect to the working position leading to a change position guide track, which constantly comprises a vertical web component.

Again, the separation between cross-transport and vertical transport is implemented because a corresponding vertical transport without further insert a corresponding tool change rack from above into the guideway and up to the change position lower or, starting from the change position, the tool change frame can be removed again from this guide. In this way, the tool changer can be quickly and reliably spent to its change position, without the need for a use of a separate transverse transport.

This applies in particular if an insertion aid is provided on a guide input of the guideway arranged in the region of the guideway opening. A guideway can also be called a slide track. In particular, by such an insertion, which can be implemented, for example, in a Nuterweiterung a guide, a simple crane or an already existing in appropriate systems hall crane or the like as a vertical transport can be readily used. By this embodiment, there is the advantage that an existing, usually a large hall crane can be used to achieve an exact storage position in combination or interaction with the guideway.

It is understood that the slotted guide or the guideway next to the permanent vertical component, which ensures a reliable movement along the guideway only using a vertical transport, may also have horizontal web components with which a certain trajectory or guideway of the tool change rack can be enforced as long as there is a vertical component at the same time. This allows in particular a simple adaptability of the corresponding tool change system or the corresponding tool change process to different structural conditions, as they can be found in particular during retrofitting.

Thus, this allows the tool change frame, for example, moved horizontally shortly before reaching the change position and be brought closer to the rollers to be changed. Likewise, possibly existing structural conditions can be avoided.

In this context, it should be emphasized that the term "guideway" is to be understood abstractly, since it ultimately focuses on the movement of the tool changer with respect to fixed assemblies. In this respect, the corresponding link guide - and accordingly the associated guide groove - not necessarily be open at the top to realize an open-topped guideway, for example, if the guide is provided on the tool change frame and a corresponding guide spring of the slotted guide on the guide support. In the latter case, the slide would then be open at the bottom, but still lead to an open-topped guideway, since the tool change rack is guided above the guide free and when lowering into the guideway.

Accordingly, a tool change that can be carried out quickly and reliably, which can optionally also be used in existing rolling machines, can be realized by a tool change method for changing tools arranged on roller shafts in a working position, which in turn are arranged in a roll stand, when a tool change rack is along a guide rail leading the tool change frame in relation to the working position is moved away from a change position or moved to the change position and the tool change process is characterized in that the tool change frame by means of a vertical transport introduced into the guideway and lowered from the top to the change position and / or starting from the change position upwards until it leaves the guideway. This method is based on the fact that the tool change frame can be spent by means of vertical transport up to its interchangeable position, while any transverse movement is then realized in another way, located in his change position tool change rack. Accordingly, a separation between vertical transport and horizontal or transverse transport is also provided here.

The guide carrier is preferably formed separately from a roller carrier in which the roller shafts are arranged, so that the guide carrier, on the one hand, performs its leading function by enabling a simple and reliable tool change and, on the other hand, can be easily retrofitted. Accordingly, cumulatively or alternatively to the other features of the present invention, a tool change system for changing at least one arranged on a whale shaft in a working position tool comprising a tool change frame, a vertical transport and a change frame guide, the change frame guide as a guide link between the tool change frame and a Guide carrier is formed, advantageous if the tool change system is characterized in that the guide carrier is formed separately from the roll carrier in which the rollers are arranged to perform a tool change quickly and reliable and this optionally also come in existing rolling machines for use ,

As already mentioned above, as a vertical transport in particular a crane in question. This has the advantage that in factories regularly corresponding cranes are present, with which also very large loads can be carried. In particular, by the separately provided guide support a crane can spend a tool change rack easy and reliable to the guide carriers and thus to the guideway, as they can readily be provided at the appropriate position and preferably with an open-topped guideway and an insertion.

The transverse transport, however, can be particularly easy to implement, for example, by a cable that can be placed with his winch also slightly away from the rolling machine, while the rope as such does not take much space and even under complex structural conditions still led to the Zugrahmen can be. It is particularly advantageous if a pulley is provided for the rope, so that different directions of movement can be realized with the same cable. In particular, it is therefore possible to implement with the same rope both a removal and a mounting tools on Walzwellen.

As already indicated at the outset, such tool changing systems or tool changing methods are of importance, in particular in transverse rolls or in stretch rolls. Although only two rollers interact with each other here, the corresponding tools are very heavy and therefore difficult to handle. Also, the roller carrier must absorb relatively large roller forces, so that they build very compact and expensive, which in turn makes access to these rollers considerably more difficult.

This applies in particular to stretching rolls, in which the tools must be withdrawn axially from the rolls and pushed back onto them, in particular if appropriately designed and complex exchanging devices for changing the entire set of tools are already present. Accordingly, it is advantageous if the tools are displaced axially to the roll axes of the rolling waves on the tool change frame and from the tool change frame to the whale rollers. Of course, this advantage may also apply to rollers other than stretching rollers, but is of considerable importance in particular for stretching rollers.

Due to the separation of transverse transport and vertical transport, as already described above, the axial movement component can be readily realized by means of transverse transport, with a suitable embodiment, it is possible that the tools only axially displaced and therefore always either in the roll carriers or on corresponding non-displaced roll components on the one hand or on Tool holders of the tool change rack are supported against the force of gravity. Accordingly, the transverse transport can also be made relatively easy and easy to handle. Once the tools have been received on the tool changer, then the vertical transport, which can be readily designed for very high loads, can take over the onward transport.

In this context, it should be mentioned that the vertical transport can certainly be designed for transverse movements, as this is common, for example, in overhead cranes. Within the leadership or closer environment of the rolling machine is largely dispensed with his querverlagernden skills, as this is then realized by the leadership.

A rapid tool change, which can also be readily implemented in existing rolling machines, can also be implemented cumulatively or alternatively by a roller comprising a roller shaft and tools arranged on the roller shaft in a working position independently of the other features of the present invention characterized in that it comprises a tool clamping clamping ring with a quick release and release unit.

Such a quick release and release unit may in particular comprise a locking pin and / or a clamping screw. The backup font is preferably used as axial securing, the clamping screw can in particular represent a clamping element.

As axial securing can preferably serve a securing element which is arranged captive on the clamping ring and can be moved from a securing position to a release position and back. This can be done for example by a corresponding rotation of the fuse element or a corresponding axial displacement. Possibly. can also be a rocker arm assembly or otherwise be used, with a fuse element, which can be displaced by a rotational movement between its securing position in its release position, turns out to be particularly compact and easy to operate.

In particular, a groove or a similar recess can be provided on the whale shaft, in which the securing element engages in its securing position. Such a groove or recess can be easily introduced later in a whale shaft. On the other hand, corresponding projections may be attached to the roll shaft or placed on the same, which of the securing element in its Be engaged behind the securing position accordingly, in order to realize in this way an axial securing.

The locking pin is preferably designed such that it can be actuated by means of a simple rotation of 180 °. This means that then by means of the simple rotation of the clamping ring can be secured quickly on the whale shaft or released from it. For this purpose, the locking pin has a recess which, by rotation of the securing pin, enables a securing of the clamping ring on the roller shaft and a removal or placing of the clamping ring from or onto the roller shaft. By the locking pin, it is possible that by a 180 ° rotation of the locking pin of the clamping ring can be secured to the roll shaft.

It is understood that the quick release and release unit does not necessarily have to have a clamping screw as a clamping element. Rather, other clamping elements can be provided, which are correspondingly axially effective. Preferably, these clamping elements comprise an actuating element, with which it actuates, as can be tensioned or relaxed. Such an actuating element can accordingly be in particular a screw head of a clamping screw. Preferably, the actuating element is axially outward, so pointing away from the tools, so that it - unlike the in the DE 88 06 968 U1 or in the US 5,735,788 disclosed roller assemblies - light and relatively freely accessible. As a result, the set-up times can be considerably minimized, since in particular fast-working tools can be used for the actuation.

Preferably, the clamping element is axially aligned, ie parallel to the axis of the respective roller, so that the corresponding clamping forces can act directly and without further deflections and builds the clamping element relatively uncomplicated.

The clamping screw preferably has a clamping head and a screw head, the clamping head applying clamping forces to the tools and the screw head serving to actuate the clamping screw. In particular, the clamping screw can be arranged such that the clamping head can be referred to as axially inward, pointing to the tools and the screw head as axially outboard, pointing away from the tool end. By this arrangement, the clamping screw, it is possible to put on the screw head of the clamping screw a corresponding tool, for example in the form of a impact wrench and to clamp the clamping screw. Thus, the clamping ring allows with a Such quick release and release a much faster tool change than known solutions.

Such a clamping ring can easily put on with the whale shaft and then clamp the tools axially. Due to the quick release and release unit, the corresponding roll change can be considerably accelerated compared to known arrangements. The ring shape of the clamping ring requires that here also a separation between transverse displacement for removing the clamping ring and vertical displacement, in order to then provide another clamping ring, preferably can be implemented. A corresponding clamping ring can also be retrofitted without further ado, because in any case in corresponding positions clamping devices are provided, which can be replaced by a corresponding clamping ring.

In one embodiment, the quick release and release unit can comprise on an inner side of the clamping ring two inner system areas for engagement with the roller in a tensioned state, which are arranged in the circumferential direction opposite one another but axially offset. If an axially unilateral force is exerted on a ring formed in this way and adapted in its direction and in its moment to the offset, then the two inner plant areas become tense. If the direction of this force is changed, so the ring dissolves, since he can then yield to a corresponding moment

Accordingly, it is advantageous for the quick release and release unit to comprise two release regions, which are arranged adjacent to one of the inner bearing regions and the other of the inner machine regions, wherein in the release regions the inner side recesses outwards relative to the adjacent inner system region. This allows structurally particularly simple way a release when the axially acting clamping force decreases or vice versa.

A corresponding clamping ring can be provided in a structurally simple manner, in particular, if the inner side of the clamping ring is designed in the area of the inner bearing areas and / or in the region of the release areas of a partial cylinder jacket, since corresponding partial cylinder jackets can be provided simply and precisely by rotating machining operations.

The axes of the sub-cylinders associated with the inner-area areas preferably coincide with one another, so that the inner-area areas can be provided in one work step. This is correspondingly easy to implement in terms of manufacturing technology.

In this case, the radius of the associated sub-cylinders of these inner equipment areas may be formed to match the radius of the associated roller shaft of the roller, so that the clamping ring with its inner system areas abut very well on this roller shaft and form a corresponding frictional connection.

Accordingly, it is also advantageous if the axes of the partial cylinders associated with the release areas coincide with one another, since this is likewise easy to implement in terms of manufacturing technology.

A jumping back of the release areas can be realized structurally particularly simple if the axes of the partial cylinders belonging to the inner system areas and the axes of the partial cylinders belonging to the release areas intersect. In this way, the clamping ring opens directly in the release areas.

Cumulatively or alternatively, the radii of the partial cylinders associated with the release regions may be larger than those of the partial cylinders associated with the inner equipment regions, whereby likewise a return of the inner side of the clamping ring in the region of the release regions can be readily ensured, and especially if the axes of the part-cylinders belonging to the respective regions can also be realized structurally without further ado.

The clamping ring may include a roller shaft to the form-fitting effective axial securing, which is arranged in the circumferential direction in an angular segment of 180 °, in the middle of which one of the two indoor equipment areas is arranged, which is axially closer to the tools than the other of the two indoor equipment areas. As a result, the form-fittingly effective axial securing can precisely position the inner system area closer to the tools, in particular in the event of a lack of tension, in order to avoid, in particular, slippage during bracing. Depending on the concrete implementation, a corresponding positive connection can be realized for example by a locking pin which engages in a groove on the roller.

A simple clamping can be realized in that the clamping ring comprises an axially acting on one of the tools clamping element, which is arranged in the circumferential direction in an angular segment of 180 °, in the middle of which one of the two indoor equipment areas is arranged axially further away from the tools is the other of the two indoor areas.

In this way, due to this clamping element axially applied to the tool clamping force causes a rear torque in the clamping ring, which presses the two inner equipment areas each against the surface of the rolling shaft and thus forces a frictional connection or frictional engagement.

Preferably, the axial securing and the clamping element in the circumferential direction of the clamping ring are arranged opposite to each other, it being understood that in this case deviations up to 90 ° could be recognized without the effect is significantly impaired.

In particular, it is understood that - if necessary - several clamping elements or axial securing can be provided distributed over the circumference.

It is understood that the features of the solutions described above or in the claims can optionally also be combined in order to implement the advantages in a cumulative manner.

Figur 1

eine schematische Ansicht einer Walzmaschine mit einem Werkzeugwechselsystem;

Figur 2

die Anordnung nach Fig. 1 bei geöffnetem Walzenständer;

Figur 3

eine Detaildarstellung zweier Spannringe für die Anordnung nach Fign. 1 und 2;

Figur 4

die Anordnung nach Fig. 3 in Aufsicht axial zu den Walzen mit gelöstem Sicherungselement;

Figur 5

einen Spannring nach Fign. 3 und 4 mit gesichertem Sicherungselement;

Figur 6

eine Detailansicht der Verliersicherung der Spannringe nach Fign. 3 und 4;

Figur 7

eine Seitenansicht eines Werkzeugwechselgestells für die Anordnung nach Fign. 1 und 2;

Figur 8

eine Frontansicht des Werkzeugwechselgestells nach Fig. 7;

Figur 9

die Anordnung nach Fig. 2 bei eingesetztem Werkzeugwechselgestell (Walzenständer nicht dargestellt); und

Figur 10

einen Schnitt durch die Anordnung nach Fig. 9.

Further advantages, objects and features of the present invention will be explained with reference to the following description of exemplary embodiments, which are shown in particular in the appended drawing. In the drawing show:

FIG. 1

a schematic view of a rolling machine with a tool change system;

FIG. 2

the arrangement after Fig. 1 when the roll stand is open;

FIG. 3

a detailed representation of two clamping rings for the arrangement FIGS. 1 and 2 ;

FIG. 4

the arrangement after Fig. 3 in plan view axially to the rollers with dissolved securing element;

FIG. 5

a clamping ring after FIGS. 3 and 4 with secured fuse element;

FIG. 6

a detailed view of the captive securing the clamping rings after FIGS. 3 and 4 ;

FIG. 7

a side view of a tool change rack for the arrangement according to FIGS. 1 and 2 ;

FIG. 8

a front view of the tool change rack after Fig. 7 ;

FIG. 9

the arrangement after Fig. 2 with inserted tool change frame (roll stand not shown); and

FIG. 10

a section through the arrangement according to Fig. 9 ,

The rolling machine 10 shown in the figures comprises two horizontally stacked rollers 80, each comprising a roller shaft 12 and a plurality of tools 11 which are arranged on the respective roller shafts 12, and at This embodiment can be used as stretching rollers. The upper roller shaft 12a is disposed above the lower roller shaft 12b. The rollers 80 are arranged in roller carriers 13, one of which is axially displaceable and which absorb the forces occurring between the rollers 80 during the rolling processes.

The entire rolling machine 10 is arranged in a foundation 14 of a workshop (not shown here) (see FIG. 10 ).

The rolling machine 10 is provided with a tool changing system 15 that can optionally also be retrofitted.

This tool change system 15 includes a tool change rack 20 (see FIGS. 7 to 10 ), a vertical transport 30, a transverse transport 40, a pull frame 50 and a change rack guide 60.

As in particular the FIGS. 7 and 8 can be removed, the tool change frame 20 comprises two tool holders 21 which are cylindrical and outer diameter of the inner work diameter of the tools 11 are adapted and fixed vertically to one another on a main plate, the position of the tool holders 21 on the main plate 22 of the position of the whale rollers 12 in the roll carriers 13 largely corresponds, so that the tool holders 21 can be readily positioned axially in front of the whale rollers 12 to receive by means of a transverse movement, the tools 11 at a tool change or to return in the reverse manner to the whale waves.

On the main plate 22, a hook extension 23 is also attached, which protrudes substantially parallel to the tool holders 21 of the main plate 22 and a plurality of small recesses (not numbered) carries, in which a crane hook 31 of a hall crane (not shown) mounted the factory can be, as this example in FIG. 9 is indicated.

The plurality of recesses of the hook extension 23 makes it possible to position the crane hook 31 axially different with respect to the center of gravity, since the center of gravity of this tool change rack 20 with or without tools 11 quite with respect to the tools 11 taking into account the question of whether these on the Tool holder 21 are positioned or not, is relocated relevant.

It is understood that - depending on the concrete implementation - the tool change frame 20 can also be configured differently, in particular with regard to the arrangement of the tool holder 21 and the hook extension 23rd

In addition, the tool change frame 20 has an opening 24 for a cable 41 (see in particular FIG. 9 ), which is used in this embodiment as a transverse transport 40.

The transverse transport 40 further comprises a deflection roller 42 for the cable 41, which can be introduced into the roller carrier 13 (see FIG. 9 ), which is the furthest from the cable carrier 41 away from the two roller carriers 13. In this way, the cable 41 can be used as a transverse transport 40 for different directions of movement.

On the tool holders 21, a tool securing device is additionally arranged, which causes a securing in the circumferential direction. Depending on the specific design of the rollers 80, other measures may be provided.

The pull frame 50 (see in particular FIGS. 9 and 10 ) is a substantially rectangular frame, which has connection possibilities to the tools 11. Here, the tools 11 are also connected to each other to form a composite. It is understood that an alternative draw frame 50 also connecting elements to each individual tool, such as horizontal connecting bars, which are respectively connected to the tools or from the Zugrahmen 50 starting reaching to the respective farthest tool 11 and then embracing all tools 11 designed are, may have to represent a composite of tools 11 and pull frame 50 for the tool change, which then implements a corresponding tool change in a very small number of transverse movements or axial movements. Accordingly, it is not absolutely necessary that the tools 11 constantly form a composite with each other.

In addition, a fastening 51 for the transverse transport 40 or for the cable 41 is provided on the draw frame 50 so that it can be connected to the transverse transport 40 quickly and reliably. It is understood that - depending on the specific embodiment - instead of a cable 41 also other cross transport can be used.

For sliding the tools 11 on the whale rollers 12, the guide roller 42 can be used by the cable 41 is deflected over the guide roller and thus pulling in the direction of the whale rollers 12 can be effectively used.

To the tool changer 20 easy and reliable in a change position (see FIGS. 9 and 10 ), the changing rack guide 60 has a slotted guide 61 in two guide beams 62, which are placed laterally of the opening path of the roller carrier 13, which is the guide carrier 62 and the cable 41 next. In this way, the guide support 62 can also optionally retrofit.

Each of the guide beams 62 has a guide groove 63, in which associated guide springs 64, which are provided on the tool change frame 20, can intervene leader.

Here, the slide guides 61 define a guide track 70 for the tool change frame 20, which is open at the top and at its open top guide 71 has an insertion aid 72, which is realized by an extension of the guide groove 63. It is understood that a corresponding guideway 70, which is open at the top and optionally also has an insertion aid at its open-top guide 71, can also be realized in other ways. For this purpose, a sliding guide 61 is not necessarily necessary, in particular, a corresponding guide groove may also be provided on the tool change frame, which is designed to be open at the top in order to ensure a correspondingly open top guide track.

For a change of the tools 11, the roller shafts 12 are first moved to change position and prepared. Then, the roll stand 13, which is the guide beams 62 closest, ascended, as a comparison of Figures 1 and 2 shows.

In a next step, the traction frame 50 is then screwed to the tools 11 and thereby a corresponding composite is provided, which includes all the tools 11 of the two whale rollers 12, ie the tools 11 of the upper whale roller 12a and the lower whale roller 12b, and the traction frame 50 ,

Thereafter, the tool change frame 20 is inserted with the crane in the guideways 70 and lowered into its change position. As can be seen immediately, the Guideway 70 in each position on a vertical component, so that a corresponding lowering and a subsequent lifting can be readily realized.

Subsequently, the pull rope of the cable 41 is performed through the opening 24 and hooked to the attachment 51. The tools 11 can then be mounted together on the tool holders 21 in the composite-and indeed by the pull frame 50 in conjunction with the tools 11 of both roller shafts 12, bridge elements being previously placed on the roller shafts 12 in this exemplary embodiment in order to control the sequence of movements to stabilize in this regard.

Following this, if necessary, the crane hook 31 is offset in order to compensate for a change in the center of gravity of the tool change frame 20. Subsequently, the tool change frame 20 can be lifted with the crane and transported away. After that, a second tool changer 20 can be discharged according to new tools 11 in the guideway and the change position can be spent. Now, the guide roller 42 is hooked to the roller carrier 13, the traction cable of the cable 41 inserted into the guide roller 42 and hooked on the back of the Zugrahmens 40 in the attachment 51. Subsequently, the tools 11 can be mounted on the whale rollers 12 in conjunction with the pull frame 50.

Now the pull frame 50 is dismantled and removed. The roller carrier 13 can be closed again, after which the rollers 80 can be moved back to the rolling position.

Already by these measures, the set-up times for a tool change in rolls 80 compared to conventional tool changes from previously up to several hours can be reduced to less than an hour without an expensive and non-retrofittable fully automated solution for changing complete tool packages must be used. In particular, the handling of individual tools is also eliminated.

The set-up time can also be reduced by clamping rings 81 to about half an hour, which are solved before mounting the pull frame 50 on the tools 11 and disassembled and reassembled by the tools 11 after disassembly of the pull frame 50.

These clamping rings 81 (see in particular FIGS. 3 to 6 ), in which FIGS. 3 and 4 partial views of the two rollers 80 in the rolling machine 10 (see FIGS. 1, 2 . 9 and 10 ) comprise a quick release and release unit 82, which is essentially realized by a locking pin 87 as axial securing and a clamping screw 91. A clamping head 92 of the clamping screw 91 is directed axially inward, ie pointing towards the tools, so that the clamping screw 91 can be adjusted with simple tools, such as an impact wrench, for example, tensioned or relaxed.

Each of the clamping rings 81 has an inner abutment region 83, with which the clamping ring 81 rests against the respective rolling shaft 12 in the clamped state. In addition, each clamping ring 81 has a release region 84, which springs back outward with respect to the inner lying lying lying but slightly axially offset interior region 83.

Now, if the axial tension is released, the clamping ring 81 can be tilted to the release areas 84, which allows easy assembly and disassembly.

In concrete implementation, the inner bearing portions 83 and the release portions 84 are each implemented by teilzylindermantelelförmige inner regions of the clamping ring 81, the axes 85 intersect, the Teilzylindermantel, which is associated with the Teilzylindermantelflächen the release portions 84, a slightly larger radius than the Teilzylindermantel, the belongs to the two indoor equipment areas 83.

The axes 85 of these two cylinders intersect approximately in the middle of the clamping ring 81 (see FIG. 3 below), so that the clamping ring 81 can also be made by simple manufacturing techniques that rely on rotating tools.

In addition, the clamping ring 81 an axial securing 86, which is realized by a perpendicular to the common axis 85 of the rolling shaft 12 and the indoor equipment areas 83 aligned locking pin 87 which pierces the clamping ring 81 in a corresponding bore. This hole opens at one point (see FIG. 3 ) inwardly, so that the locking pin 87 can engage in a groove, not shown, of the roller shaft 12, to secure the clamping ring 81 in this way axially. The locking pin 87 is also secured by a locking screw 88 against losing (see FIG. 6 ).

This captive securing the locking pin 87, however, takes place such that the locking pin 87 can still be rotated in its bore, so that a recess 89 of the locking pin for securing or unlocking the axial lock 86 can be rotated accordingly. If the recess 89 points to the roller shaft 12 or to the groove of the roller shaft 12, then the clamping ring 81 can be removed, since the axial positive connection between the roller shaft 12 and the roller shaft 12 is sufficient Locking pin 87 and the groove is open while the axial lock 86 engages when the recess points away from the roller shaft 12 and thus the positive connection between the rolling shaft 12 and locking pin 87 is closed.

In addition, the clamping ring 81 comprises a clamping element 90, which can apply a clamping force coaxially to the axis 85 of the roller shaft 12. The clamping element 90 comprises a clamping screw 91 by means of which a clamping head 92 against an adjacent tool 11 can be axially clamped. In this case, at least two of the clamping elements 90 sit in an angular segment of 180 °, which in the middle of the inner plant area 83, which is furthest away from the tool 11, which is located next to the clamping ring 81. In this way, the clamping force applied axially by the clamping element 90 leads to a tilting moment, which presses both inner system areas 83 against the roller 12.

The clamping elements 90 are arranged opposite to the axial securing 86 in the circumferential direction, so that the axial securing 86 is arranged in an angular segment of 180 °, which in the middle comprises the inner equipment region 83 which is closest to the tool 11 which lies next to the clamping ring 81 ,

The clamping ring 81 with its quick release and release unit 82 can be mounted and dismounted very quickly, whereby the setup times can be further minimized. In addition, it can also be used with existing rollers 80 and accordingly placed in separate transverse and vertical movements on the whale rollers 12 and removed therefrom. LIST OF REFERENCE NUMBERS 10 rolling machine 60 Changing frame lead 11 Tool (numbered as an example) 61 link guide 12 roller shaft 62 guide support 12a upper whale wave (exemplified in Fig. 1 numbered) 63 guide 64 guide spring 12b lower whale wave (exemplified in Fig. 1 numbered) 70 guideway 71 guide entrance 13 roll carriers 72 insertion 14 foundation 80 roller 15 Tool changing system 81 clamping ring 20 Tool change frame 82 Quick release and release unit 21 tool holder 83 Indoor plant area 22 master disk 84 releasing region 23 Hook extension 85 axis 24 Opening for cable 41 86 axial safety 30 vertical transport 87 safety pin 31 Crane hook of a hall crane 88 locking screw 40 cross transport 89 recess 41 cable 90 clamping element 42 Pulley for cable 41 91 clamping screw 50 towing frame 92 clamping head 51 Attachment for cross transport 40

Claims (7)

1. A tool-changing system (15) for changing at least one tool (11) arranged on a rolling shaft (12) in a working position, comprising a tool-changing frame (20), a vertical conveyor (30) and a changeable frame guide (60), wherein the changeable frame guide (60) is configured as a slide guide (61) between the tool-changing frame (20) and a guide carrier (62), characterized in that the guide slide guide (61) has an upwardly open guideway (70) guiding the tool-changing frame (20) in respect of the working position up to a changing position, which guideway comprises a vertical path component and/or that the guide carrier (62) is configured separately from a roller carrier (13) in which the rolling shaft (12) is arranged.
2. The tool-changing system (15) according to claim 1, characterized in that an insertion aid (72) is provided at a guide entrance (71) of the guideway (40) arranged in the region of the guideway opening.
3. The tool-changing system (15) according to claim 1 or 2, characterized in that the tool-changing system (15) is used for changing a plurality of tools (11), possibly also arranged on different rolling shafts (12), and the tools (11) are preferably connected to one another to create an interconnected system.
4. A tool-changing method for changing at least one tool (11) arranged on a rolling shaft (12) in a working position which, for its part, is in turn arranged in a roll housing (13), wherein a tool-changing frame (20) moves away along a guideway (70) guiding the tool-changing frame (20) in respect of the working position from a changing position or moves towards the changing position, characterized in that the tool-changing frame (20) is introduced into the guideway (70) by means of a vertical conveyor (30) and lowered from above into the changing position and/or raised upwards starting from the changing position until the guideway (70) is left.
5. The tool-changing method according to claim 4, characterized in that the tool-changing method is used for changing a plurality of tools (11), possibly also arranged on different rolling shafts (12), and for a tool change the tools (11) are preferably connected to one another to create an interconnected system.
6. A tool-changing system (15) according to one of claims 1 to 3 or a tool-changing method according to claim 4 or 5, characterized in that the vertical conveyor (30) is a crane.
7. The tool-changing system (15) or tool-changing method according to one of the preceding claims, characterized in that the tools (11) are displaced axially from the rolling shafts (12) to the tool-changing frame (20) and from the tool-changing frame (20) to the rolling shafts (12).

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