EP4013596A1

EP4013596A1 - Variable corrugator

Info

Publication number: EP4013596A1
Application number: EP20747378.6A
Authority: EP
Inventors: Florian Baumeister; Christian MIENER
Original assignee: Fraenkische Industrial Pipes GmbH and Co KG
Current assignee: Fraenkische Industrial Pipes GmbH and Co KG
Priority date: 2019-08-13
Filing date: 2020-07-27
Publication date: 2022-06-22
Also published as: CN114206598A; DE102019212130A1; CA3148003A1; WO2021028203A1

Abstract

The invention relates to a corrugator (10), comprising sequences of circumferential shaping jaws, at least one changing device (16, 18), which is designed to exchange a shaping jaw, and a provisioning device (30), which is designed to provide the changing device (16, 18) with a predetermined shaping jaw in a waiting position (WP1, WP2) from a plurality of shaping jaws (36) arranged outside the sequences of shaping jaws arranged circumferentially at the corrugator (10) and/or to remove a shaping jaw provided in the waiting position (WP1, WP2) and to feed said shaping jaw to a plurality of shaping jaws (36) arranged outside the sequences of shaping jaws arranged circumferentially at the corrugator (10).

Description

Exchange corrugator

Description The invention relates to a corrugator for producing pipes, in particular corrugated pipes.

Corrugators are used, for example, to manufacture corrugated pipes. In this case, for example, a plastic material is introduced into the corrugator and, by means of overpressure and / or underpressure, is brought to bear on molding surfaces which are formed on the mold jaws of the corrugator in order to form the corrugated pipe. The corrugator usually comprises a plurality of mold jaws which have the molding surfaces. The mold jaws typically move in a rotating manner on the corrugator, so that depending on the rotational speed, number and size of the mold jaws, one and the same mold jaw repeatedly passes a defined position on the corrugator after a predetermined time. If one now wants to produce corrugated pipes with a uniform diameter but different lengths, the corrugator can be equipped with molding jaws in such a way that all molding surfaces of the molding jaws are identical to one another. In this way, an endless corrugated pipe with a uniform diameter can be produced. In a subsequent processing step, this endless corrugated pipe can then be cut to the desired lengths.

If, on the other hand, you want to manufacture corrugated pipes that have a variable diameter over their length, for example an area with an enlarged diameter compared to the rest of the corrugated pipe, then the corrugator can be equipped with molding jaws, which enable the production of corrugated pipe sections with a small diameter from Allow corrugated pipe sections with increasing diameter, a production of corrugated pipe sections with a large diameter and a production of corrugated pipe sections with decreasing diameter. However, due to the system, that is, due to the way in which the corrugator works, only an endless corrugated tube can be produced in which the enlarged diameter occurs in a constant periodic sequence. If, for example, corrugated pipes are desired which have exactly one section with an enlarged diameter, then these can only be produced in a single length without producing large waste of material.

However, if you want to produce different corrugated pipes which, for example, have a different number of sections with an enlarged diameter, but the same overall length, the equipping of the corrugator for each corrugated pipe has to be reconfigured in a complex manner. The corrugator is usually equipped by hand or using complex additional units. The process has to be interrupted, in particular a corrugator has to be brought to a standstill.

Because of this high expenditure of time and money to equip a corrugator, small series or even one-off production of specific corrugated pipes are often not feasible. It is therefore the object of the present invention to provide a corrugator which makes it possible to flexibly adapt the design of a corrugated pipe to be produced during the production process and thereby reduce the set-up costs of the corrugator. This object is achieved by a corrugator for the production of tubes, in particular corrugated tubes, comprising at least two sequences of rotating mold jaws, each of which have at least one shaping surface, wherein in a predetermined area of the corrugator two mold jaws abut against one another in such a way that their molding surfaces form a mold for forming a tube, at least one changing device which is set up to hold a mold jaw of the corresponding sequence of mold jaws against one on one to exchange mold jaws assigned to the waiting position assigned to the changing device, wherein the changing device is further configured to change the mold jaw while the sequence of mold jaws is being advanced on the corrugator, and wherein the corrugator further comprises a provision device which is configured to produce a predetermined mold jaw from a plurality of mold jaws, which is arranged outside the series of mold jaws running around the corrugator, to be taken and made available to the waiting position of the changing device and / or a mold jaw present at the waiting position z u remove and feed these mold jaws to the plurality of mold jaws arranged outside of the series of mold jaws arranged around the corrugator.

In this way, the provision device can remove a corresponding molding jaw from a storage device and make it available at the waiting position. If a mold then passes through the rotating sequence of mold jaws, which can be taken from the sequence of mold jaws on the basis of a previous determination, the changing device can remove this mold jaw from the sequence of mold jaws and at the same time the mold jaws provided at the waiting position in the Insert sequence of mold jaws.

After the changing process, the removed mold jaw can be removed from this corresponding waiting position by the provision device and are stored, for example, in the storage device of the plurality of mold jaws which are not part of the sequence of mold jaws rotating around the corrugator. In order to be able to guarantee an exact exchange of the mold jaws, it can be advantageous that the changing device is set up to apply a first predetermined force, for example a predefined pressure, against the sequence of rotating mold jaws as soon as the mold jaw to be removed enters the changing device . If the mold jaw to be removed has then completely entered the changing device, the changing device can be set up to carry out the changing process with a second predetermined force, for example a pressure. In particular, the second predetermined force can be greater than the first predetermined force. The use of an, in particular electronically controlled,

Force curve conceivable. Furthermore, the changing device can be designed in such a way that a receiving width of the changing device, i.e. a width of the section of the changing device which receives a mold jaw to be removed, removes it from the sequence of rotating mold jaws and removes a mold jaw provided at the waiting position into the sequence of inserts circumferential mold jaws, essentially corresponds to the width of a single mold jaw. In other words, the “width” of an individual mold jaw or the changing device is a dimension which is measured along a direction of advancement of the sequence of mold jaws on the corrugator.

However, since it is almost impossible to manufacture all the mold jaws of the corrugator with an exactly identical width, a play compensation unit can also be provided on the corrugator, which is set up in the event that the mold jaw to be removed has a greater width than the mold jaw to be inserted to close a gap between adjacent mold blocks, and in the event that the mold jaw to be removed has a smaller width than the mold jaw to be inserted, to allow the two mold jaws adjacent to the mold jaw to be removed to be pushed apart in order to be able to insert the wider mold jaw between these two adjacent mold jaws. The play compensation unit can electromechanically detect and compensate for play between adjacent mold jaws after the changing process.

The play compensation can be done by changing the length of the orbit. Corrugators can for this purpose consist of several modules arranged next to one another, there being start and / or end modules which contain a curved area of the orbit and / or intermediate modules which form a straight area of the corrugator. To set the game, the start and / or end modules can be moved towards or away from the intermediate modules. However, only the end module, which is also referred to as the “outlet module”, is preferably adjusted, since a drive unit for driving the mold jaws in the corrugator can be located directly on the start module, which is also referred to as the “inlet module”. In this case, the start and / or end modules can advantageously run in a guide (for example a T-slot or a dovetail guide) introduced into the base plate of the corrugator.

The local change of the module can take place via at least one motor-driven spindle. The electrical signal for adjustment for this can come from a computer unit which, based on a previously measured play between the mold jaws, can determine a corresponding angular rotation of the spindle and thus a shift of the start and / or end module. For this purpose, the game can be recorded using a measuring device, for example an optical unit, which comprises a light-emitting and a light-receiving unit and / or a camera, which is set up to to detect a distance between two mold jaws. The measuring device can preferably be arranged in an inlet area of mold jaws in the corrugator or in front of the drive unit, since a corresponding play can reach a maximum size shortly before this drive unit. This is because the drive unit for driving the mold jaws in the corrugator can push them in their direction of rotation so that the mold jaws can rest against one another in the direction of rotation after the drive unit. In order to detect the mold jaws, markings in particular can be attached to the mold jaws.

As an alternative or in addition to optical detection, detection using RFID or QR code can also be carried out. Thus, even when using an RFID or QR technology, a sequence of successive molding jaw types can be recorded at the same time and compared, for example, with a predetermined sequence of molding jaw types. A deviation of the detected and the predetermined sequence of mold jaws can be output as an error signal, for example. Furthermore, the mold jaws can run in a largely closed channel at least along a section of a “return”, i.e. a section of the circulation path of a respective sequence of mold jaws that does not belong to the predetermined area of the corrugator in which the tube is formed. The largely closed channel can, however, have openings through which an exchange of air present in the channel with ambient air and / or a removal of foreign bodies present in the channel is made possible. In the area of the changing device, the largely closed channel can have further interruptions, on the one hand to enable the mold jaws to be changed by the changing device and, on the other hand, to allow the provision device to remove and provide mold jaws from the waiting position. There the further interruptions can be permanently open or can be opened during operation and / or are essentially closed by a section of the changing device.

In a further development of the present invention, the majority of the mold jaws arranged outside the series of mold jaws surrounding the corrugator can be arranged in an area which, in particular, is completely outside a section of the corrugator which is defined by the series of peripheral mold jaws and / or outside a Section of the corrugator, which is arranged in a direction perpendicular to a plane of rotation of a sequence of mold jaws above and / or below the section defined by the sequence of circumferential mold jaws. If a respective sequence of mold jaws rotating around the corrugator forms a horizontal circuit that is essentially oval or O-shaped, the majority of the mold jaws arranged outside can neither inside the 0 shape nor vertically above or below the through the 0 shape defined area. In this way, it can be made possible that a structural space required by the corrugator according to the invention is essentially identical to a similar conventional corrugator. A storage device for the externally arranged plurality of mold jaws can be removed from an assigned sequence of mold jaws rotating around the corrugator or can be arranged directly adjacent to the respective sequence. In particular, a respective storage device for molding jaws, which is assigned to a corresponding sequence of rotating molding jaws, can be arranged in a common horizontal plane with this sequence of rotating molding jaws.

Furthermore, the provision device can be set up to feed a mold jaw removed from the waiting position to a storage position, which of the plurality is from outside that on the corrugator is assigned to circumferential sequences of mold jaws arranged mold jaws. The storage position is not limited to a single local location of a storage device, which is connected to the storage position, but two mold jaws removed one after the other from the waiting position can be fed to a storage position at different locations of a common storage device.

The memory position can be an individual memory position for a respective type of mold jaw or for each mold jaw in a memory device. That is, in the memory device, each mold jaw can be assigned a memory position of its own, which can be uniquely identified, for example, by a row and column number. Alternatively or additionally, the storage device can be divided into areas in which mold jaws are only stored separately according to different types of mold jaws, for example according to the molding surface of the mold jaw with a small diameter, after the molding surface of the mold jaw with a large diameter, after the molding surface of the mold jaw with increasing diameter and after Forming surface of the mold jaw with decreasing diameter. In this way, the same storage positions can be filled with different mold jaws of the same type, so that the overall space requirement of the storage device can be reduced. Of course, other known storage methods are also conceivable here, such as, for example, so-called chaotic storage, in which free storage spaces are filled with mold jaws, regardless of the design of the mold jaws. The mold jaws can also be distinguished from one another by an individual and / or type-based identifier by a corresponding unit, for example using RFID, barcodes or other codes, such as respective mechanical markings at predetermined positions.

Alternatively, the storage position can be one for all mold jaws, which from removed from the supply device from the waiting position and fed to the plurality of mold jaws arranged outside the series of mold jaws arranged around the corrugator, the same position of a storage device may be. Thus, the supply device can always feed a mold jaw removed from the waiting position, regardless of the design of the mold jaw, to the same storage position of the storage device. Because the provision device only has to be set up to move mold jaws between a single storage position and the waiting position or positions of the associated changing device, the provision device can be designed in a significantly simplified manner.

A transport device can be assigned to the storage position, which is set up to transport a molding jaw provided by the supply device at the storage position away from the storage position and / or to transport one molding jaw from the plurality of molding jaws arranged outside the series of molding jaws that run around the corrugator to the To transport storage position, so that this mold jaw can be removed from the provision device. In this way, the mold jaws fed to the storage position of the storage device can be transported to the respective storage locations, as already described above. It is also conceivable that the transport device is designed as a drag chain or the like, which moves the plurality of mold jaws arranged in the storage device, or at least a subset thereof, in a circumferential manner. The drag chain can, when it has come into engagement with a mold jaw stored at the storage position by the provision device, be displaced in such a way that a free section of the drag chain is again assigned to the memory position, so that a mold jaw can be picked up again from the memory position. Furthermore, the drag chain or an associated drive device can receive a corresponding signal from a control unit in order to set a predetermined mold jaw to provide the drag chain at the storage position of the storage unit so that it can be removed from the provision device. For this purpose, the drag chain can in particular be drivable both forwards and backwards.

In a further development of the present invention, the provision device can comprise at least one robot arrangement which is set up to detect at least one mold jaw and to move it between the waiting position and the plurality of mold jaws arranged outside the series of mold jaws surrounding the corrugator, in particular the storage position. For this purpose, the robot arrangement can comprise at least one gripper, which is set up to grasp at least one respective mold jaw, and an arm, via which the at least one gripper can be displaced between the storage position and a waiting position.

The robot arrangement can advantageously be designed to be displaceable along precisely two axes, in particular along two axes perpendicular to one another. This very simply designed robot arrangement can thus be set up to move the gripper of the robot arrangement vertically upwards from a waiting position, then horizontally in the direction of a storage device and there vertically downwards to a storage position. Such a robot arrangement can be implemented in a very space-saving manner, so that, if necessary, several of these robot arrangements can be placed closely adjacent to one another.

The changing device can also be set up to move during the changing process of the mold jaws in parallel, and in particular at a substantially identical speed, to the displacement of the sequence of rotating mold jaws in the area of the changing device. If a molding jaw is exchanged for another molding jaw during operation, that is, while the sequence of circulating mold jaws are moved further, then press the mold jaws following the mold jaw to be exchanged of the sequence of circulating mold jaws against the changing device during the changing process. This can lead to an interruption of the continuously rotating sequence of mold jaws or even damage to parts of the corrugator. In order to avoid this, the changing device can be mounted on the corrugator in such a way that it can be displaced over a predetermined section together with the sequence of rotating mold jaws. For this purpose, the changing device can be actively driven together with the movement of the sequence of rotating mold jaws, or it can also be passively "dragged along" by the sequence of rotating molding jaws.

The changing device can also be set up to return to a starting position after changing the mold jaws before changing the mold jaws, so that the mold jaw recently removed from the sequence of rotating mold jaws is arranged in the waiting position. In particular, in order to be able to combine a two-axis robot arrangement with a changing device that can be displaced parallel to the movement of the sequence of rotating mold jaws, it can be advantageous to move the changing device back to a starting position after a changing process, so that a waiting position accessed by the provision device is always arranged at the same position of the corrugator.

Furthermore, the changing device can comprise at least two, in particular exactly two, waiting positions and the supply device can be set up to optionally remove mold jaws from each of the two waiting positions. It should be mentioned at this point that, as far as applicable, the text passages listed above which refer to “the / a waiting position” can be applied to each of the waiting positions of a respective changing device. In particular, the changing device can comprise a linearly operable sliding device which is set up to push a molding jaw to be removed from the sequence of rotating mold jaws in a direction essentially parallel to a plane of rotation of this sequence of molding jaws or into this sequence. Thus, the changing device can comprise a sliding device which has two compartments, each of which can accommodate a mold jaw. These two compartments can each be traversed by the sequence of revolving mold jaws as if they form a section of the above-mentioned channel in which the sequence of revolving mold jaws is displaced. As a result, the two compartments can be designed to be open on opposite sides in the feed direction of the sequence of circumferential mold jaws, in order to allow entry / exit of mold jaws. In the case of two waiting positions of the changing device, the sliding device can comprise three partition walls which extend essentially in the width direction of the changing device and which define the two compartments. Thus, when the changing device is not actuated, one of the compartments can always be in a pass-through position in which it is passed through by the sequence of rotating mold jaws. In this state, the correspondingly other compartment forms a first waiting position at which a molding jaw can be removed from the compartment or can be made available in the compartment. If the changing device is actuated, the compartment located in the first waiting position moves into the flow position and the compartment located in the flow position prior to actuation moves to a second waiting position at which the mold jaw located in this compartment can again be exchanged. With a changing device designed in this way, the feed direction of the sequence of rotating mold jaws runs essentially perpendicular to an actuation direction of the changing device and parallel to the plane which is defined by the sequence of rotating molding jaws. Furthermore, the corrugator can comprise a plurality of changing devices, in particular three or four changing devices. In this way, it is possible, during a single revolution of the sequence of rotating mold jaws on the corrugator, to exchange a respective entire sequence of rotating molding jaws for another entire sequence of rotating molding jaws which has a different sequence / configuration of molding surfaces. Each sequence of mold jaws rotating on the corrugator can be assigned at least one separate supply device and at least one separate changing device. In conventional corrugators, in which two sequences of mold jaws rotate with opposite directions of rotation, one or more supply devices and one or more changing devices can be arranged on each return of the mold jaws. In comparison to the fact that a provision device has to serve both returns of the sequences of rotating mold jaws, this can enable a less complex provision device and / or a faster change of mold jaws.

In particular, the plurality of mold jaws, which are arranged outside the series of mold jaws circulating on the corrugator, can comprise at least the same number of mold jaws as the number of mold jaws of the corrugator circulating series or series to which the plurality of mold jaws is assigned. In this way, all of the mold jaws that are currently contained in a sequence of circumferential mold jaws can be completely exchanged for mold jaws that are still arranged in a corresponding storage device at this point in time. It is thus possible that a wide variety of tubes can be produced in a seamless transition on the corrugator. In this way set-up times can be shortened and so manufacturing costs can be reduced.

The present invention will be described in greater detail below using an exemplary embodiment with reference to the accompanying drawings. It shows:

FIG. 1 shows a plan view of a partially exposed corrugator according to the present invention; FIG. 2 shows a changing device of the corrugator according to the invention in a first position; and

FIG. 3 shows the changing device from FIG. 2 in a second position. In Figure 1, a corrugator according to the invention is generally with the

Reference numeral 10 denotes. The corrugator 10 has a first half I and a second half II which are adjacent to one another along a center plane A. Arranged on each of the halves I and II of the corrugator 10 is a sequence of mold jaws (not shown) which rotate along the arrows U on the corresponding half I, II of the corrugator 10. In an area in which the mold jaws of the two halves I, II of the corrugator 10 are displaced along the plane A, the mold jaws lie against one another in pairs so that a tube defined by the molding surfaces of the mold jaws can be formed along the plane A. At the end of the tube formation area, the mold jaws are shifted away from each other and fed to a respective return 12, 14, at the end of which the mold jaws are shifted towards each other again in order to rest against each other along plane A. Since the two sequences of mold jaws of halves I and II of corrugator 10 include the same number of mold jaws, which are driven on both halves I and II of corrugator 10 at the same speeds, the same meet again after a complete revolution along arrows U. Mold jaws on top of each other in order to lie against each other in pairs and consequently to form the same pipe section.

It can therefore be seen that a tube produced endlessly by the corrugator 10 repeats itself periodically at the latest after one complete cycle of the two series of mold jaws. In order to be able to manufacture tubes with different lengths and with different designs in a completely flexible manner during continuous operation of the corrugator 10, it is necessary to remove mold jaws from the series of mold jaws and to replace them with differently designed mold jaws.

For this purpose, a changing device 16, 18 is arranged on each return 12, 14 of the corrugator 10 according to the invention, through which a respective sequence of mold jaws is displaced.

Referring now to Figure 2, the changing device 16 of half I of the corrugator 10 is shown in detail, whereby it should be pointed out at this point that the changing device 16 and the changing device 18 are identical, so that an analogous description of the changing device 18 is omitted becomes.

The changing device 16 comprises a sliding device 20 which is connected to a drive 22 in such a way that the sliding device 20 can be shifted between the position shown in FIG. 2 and the position shown in FIG. The drive 22 can be designed, for example, as a pneumatically operated piston-cylinder arrangement or as an electric drive with a linear axis or spindle drive. Arranged on the sliding device 20 of the changing device 16 are three partition walls 24, which are arranged essentially along a width direction B of the changing device 16 or parallel to a feed direction U of the sequence passing through the changing device 16 run from mold jaws. The three partition walls 24 define a first compartment 26 and a second compartment 28 on the sliding device 20. In the position shown in FIG. 2, the first compartment 26 is in a pass-through position DP through which the corresponding sequence of mold jaws passes without the Sequence of mold jaws would be affected. In the position of the sliding device 20 shown in FIG. 2, the second compartment 28 is in a first waiting position WP1. Referring back to FIG. 1, it can be seen that the compartments 26 and 28 are open on their upper side, that is to say on a side above the plane of the sheet in FIG. 1. Thus, a molding jaw arranged in the second compartment 28 of the sliding device 20, which is in the first waiting position WP1 in FIG. 1, can be provided by a provision device 30, which in the exemplary embodiment shown in FIG

Robot arrangement 30 is designed with a gripper 32 and are moved to a storage position SP of one of the half I of the corrugator 10 or the storage device 34 associated with the sequence of rotating mold jaws arranged thereon. From the storage position SP, the mold jaw can then be fed to a plurality of mold jaws 36, which are arranged outside the series of mold jaws running around the corrugator 10. The expression “outside of the corrugator 10” is intended to mean in this context that the corresponding plurality of mold jaws 36 is not arranged in an area spanned by the arrows U or in an area arranged above or below it perpendicular to the plane of the sheet. Of course, half II of the corrugator 10 can be assigned an analog provision device and storage device, with reference to the description of half I of the corrugator 10 for reasons of clarity.

Then the storage position SP can be a new mold from the A plurality of mold jaws 36 arranged outside the corrugator 10 are supplied, which mold jaws 36 are transported from there by the provision device 30 to the waiting position WP1.

If a predetermined mold jaw from the sequence of mold jaws rotating on half I of the corrugator 10 is to be exchanged for the mold jaw provided at the waiting position WP1, the changing device 16 changes at the moment at which the predetermined mold jaw has completely entered the first compartment 26 , from the position shown in FIG. 2 into the position shown in FIG. The predetermined molding jaw arranged in the first compartment 26 has, as shown in FIG. 3, been shifted to a second waiting position WP2, whereas the molding jaw provided in the second compartment 28 has been shifted into the throughput position DP, so that it replaces the removed one Mold jaws has been inserted as part of the sequence of rotating mold jaws.

The provision device 30 can now remove the molding jaw from the second waiting position WP2, feed it to the storage position SP, then remove a new molding jaw from there and make it available at the second waiting position WP2 for a new change process.

The drive 22 is advantageously designed or controlled in such a way that as soon as a mold jaw to be exchanged enters the passage position DP of the sliding device 20 of the changing device 16 (shown dotted in FIG. 2), the sliding device 20 applies a first force or a first pressure p1 is displaced against the sequence of rotating mold jaws in the alternating direction (that is, either from the position shown in FIG. 2 into the position shown in FIG. 3 or vice versa). If the mold jaw to be exchanged has completely entered the first compartment 26 arranged in the passage position DP (in FIG shown in dotted lines), the sliding device 20 is displaced in the alternating direction with a second force or a second pressure p2, which is greater than the first force or the first pressure p1, so that the one in the second compartment 28 arranged molding jaws (shown in dashed lines in FIG. 3) are fed to the sequence of molding jaws which rotate along the arrows U at the passage position DP.

Claims

Expectations

1. Corrugator (10) for the production of pipes, in particular corrugated pipes, comprising at least two sequences of circumferential mold jaws, each of which has at least one molding surface, wherein in a predetermined area (A) of the corrugator (10) two mold jaws lie against one another in such a way that the shaping surfaces of which form a mold for forming a pipe, at least one changing device (16, 18) which is set up to provide a mold jaw of the corresponding sequence of mold jaws against a waiting position (WP1, WP2) assigned to the changing device (16, 18) To exchange mold jaws, wherein the changing device (16, 18) is also set up to the

To change mold jaws during an advance of the sequence of mold jaws on the corrugator (10), and wherein the corrugator (10) further comprises a supply device (30) which is set up to provide a predetermined mold jaw from a plurality of mold jaws (36), which outside the on

Corrugator (10) is arranged circumferential sequences of mold jaws, to be found and to the waiting position (WP1, WP2) of the

Providing changing device (16, 18) and / or removing one of the mold jaws present at the waiting position (WP1, WP2) and these mold jaws from outside the corrugator

(10) to feed circumferential sequences of mold jaws arranged mold jaws (36).

2. Corrugator (10) according to claim 1, characterized in that the majority of the outside of the am

Corrugator (10) circumferential sequences of mold jaws arranged mold jaws (36) are arranged in an area which in particular completely outside a section of the corrugator (10) which is defined by the sequence of rotating mold jaws and / or outside a section of the corrugator (10) which lies above and / or in a direction perpendicular to a plane of rotation of a sequence of mold jaws is arranged under the section defined by the sequence of rotating mold jaws.

3. Corrugator (10) according to claim 1 or 2, characterized in that the supply device (30) is set up to take one from the waiting position (WP1, WP2)

To supply molding jaws to a storage position (SP) which is assigned to the plurality of molding jaws (36) arranged outside of the series of molding jaws surrounding the corrugator (10). 4. Corrugator (10) according to claim 3, characterized in that the storage position (SP) is an individual storage position (SP) for a respective type of molding jaws or for each molding jaw in a storage device (34). 5. Corrugator (10) according to claim 3, characterized in that the storage position (SP) has one for all mold jaws, which are removed from the waiting position (WP1, WP2) by the supply device (30) and the majority from outside the corrugator (10 ) circumferential sequences of mold jaws arranged mold jaws (36) are supplied, same position of a

Storage device (34).

6. Corrugator (10) according to claim 5, characterized in that the storage position (SP) is assigned a transport device which is set up to remove from the storage position (SP) a molding jaw provided by the provision device (30) at the storage position (SP) away to transport and / or to transport a mold jaw from the plurality of mold jaws (36) arranged outside the series of mold jaws surrounding the corrugator (10) to the storage position (SP) so that this mold jaw can be removed from the supply device (30).

7. Corrugator (10) according to one of the preceding claims, optionally according to claim 3, characterized in that the supply device (30) comprises at least one robot arrangement (30, 32) which is set up to grasp at least one mold jaw and between the waiting position (WP1, WP2) and the plurality of mold jaws (36), in particular the storage position (SP), arranged outside the series of mold jaws arranged around the corrugator (10).

8. Corrugator (10) according to claim 7, characterized in that the robot arrangement (30, 32) is designed to be displaceable along exactly two axes, in particular along two axes perpendicular to one another.

9. Corrugator (10) according to one of the preceding claims, characterized in that the changing device (16, 18) is further designed to move during the changing process of the mold jaws in parallel, and in particular at a substantially identical speed, to the displacement (U ) to move the sequence of rotating mold jaws in the area of the changing device (16, 18). 10. Corrugator (10) according to claim 9, characterized in that the changing device (16, 18) is further configured to after changing the mold jaws to one Return to the starting position immediately before changing the mold jaws, so that the mold jaw recently removed from the sequence of rotating mold jaws is arranged at the waiting position (WP1, WP2).

11. Corrugator (10) according to one of the preceding claims, characterized in that the changing device (16, 18) comprises at least two, in particular exactly two, waiting positions (WP1, WP2) and that the provision device (30) is set up to optionally mold jaws from each of the two

Waiting positions (WP1, WP2) can be found.

12. Corrugator (10) according to claim 11, characterized in that the changing device (16, 18) comprises a linearly operable sliding device (20) which is set up to remove a mold jaw to be removed from the sequence of circumferential mold jaws in a plane to a plane of rotation this sequence of mold jaws in a substantially parallel direction (p1, p2) out or into this sequence.

13. Corrugator (10) according to one of the preceding claims, characterized in that the corrugator (10) has a plurality of changing devices (16, 18), in particular three or four

Changing devices (16, 18) includes.

14. Corrugator (10) according to one of the preceding claims, characterized in that at least one separate provision device (30) and at least one separate changing device (16, 18) is assigned to each sequence of mold jaws rotating on the corrugator (10).

15. Corrugator (10) according to one of the preceding claims, characterized in that the plurality of mold jaws, which are arranged outside the series of mold jaws (36) circulating on the corrugator (10), comprises at least the same number of mold jaws as the number of mold jaws of the series or series circulating on the corrugator (10) which / which the plural of

Is assigned molding jaws.