Method for monitoring seaming tools

Abstract

A method for monitoring seaming tools for a sealer for sealing a container includes providing a seaming tool and a monitoring device for monitoring the seaming tool, the monitoring device including a rotation sensor which is signal-connected to the monitoring device, by which rotation sensor the rotation of the seaming tool can be measured. Rotating the seaming tool and monitoring the seaming tool by measuring a temporal course of the rotation of the seaming tool by the rotation sensor.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to European Application No. 24213083.9, filed on Nov. 14, 2024, the contents of which are hereby incorporated herein by reference.TECHNICAL INFORMATION

[0002] The disclosure relates to a method for monitoring seaming tools of a sealer. The disclosure further relates to a device and a sealer for carrying out the method.BACKGROUND

[0003] When filling beverage cans or food cans, the cans pass through a can sealer after being filled with the beverage or the food, the filled cans running in via a feed path and can lids running in via a further feed path. The can sealer usually has several similar arrangements arranged in the form of a carousel, in which in each case one can is sealed with a can lid. The can lids are in this case guided onto the cans and held on the can with a seaming head. This holding also serves to fix the cans against breaking out of the circular path through which the cans pass in the can sealer on account of the centrifugal force. In the can sealer, in this case the can with the can lid is seamed at the edge via a seaming roller and is thus sealed. As a rule, the can with the can lid is in this case additionally rotated about its own axis of symmetry by the seaming head. For rotation, the seaming rollers and seaming heads are arranged on a respective seaming shaft or seaming roller bolt.

[0004] A conventional can sealer is described in DE 749636 and DE 4234115 A1. The can sealer comprises a clamping device for receiving a can to be sealed. In the operating state, the can to be sealed is introduced into the clamping device and is secured by the latter in the axial and radial direction. Likewise, a can lid is introduced in a centered manner over the can opening of the can to be sealed. The can has a circumferential can flange in the region of the can opening, and the can lid has a circumferential can lid flange. To seal the can opening by the can lid, the can sealer additionally comprises two seaming rollers which are mounted rotatably about in each case one axis, which seaming rollers press the can flange and the can lid flange together by a substantially radially acting force, the pressing being effected by a continuous rolling in the circumferential direction along the circumference of the can opening.

[0005] A further conventional can sealer is known from GB 2098899 A. The can sealer comprises a clamping device for receiving the can to be sealed and a seaming roller. In the operating state, the can to be sealed is introduced into the clamping device and is secured by the latter in the axial and radial direction. Likewise, a can lid is introduced in a centered manner over the can opening of the can to be sealed. The can has a circumferential can flange in the region of the can opening of the can body, and the can lid has a circumferential can lid flange.SUMMARY

[0006] Therefore, for sealing the cans, seaming tools are required which comprise, inter alia, the above-mentioned seaming rollers and seaming heads. It has been determined that the seaming tools deform the metal of can and lid and are therefore subject to wear caused by pressure and friction. The seaming tools therefore have to be replaced from time to time. An important quality feature of seaming rollers is the number of cans guaranteed by the manufacturer which can be sealed with this seaming roller.

[0007] If the data are recorded properly, the number of sealed cans of a seaming roller can be determined roughly and the wear of the seaming tools can be monitored roughly. However, manual recordings by the user are required for this purpose.

[0008] There is no reliable method for monitoring the wear of seaming tools.

[0009] Thus, the object of the disclosure is to provide a method for monitoring seaming tools and a device and a sealer which avoid the disadvantageous effects known from the prior art. In particular, it should be made possible to monitor the wear of seaming tools of a sealer accurately and reliably.

[0010] The object is met by a method according to the disclosure for monitoring seaming tools of a sealer and a device and a sealer for carrying out the method according to the disclosure.

[0011] According to the disclosure, a method for monitoring seaming tools for a or of a sealer for sealing a container is proposed. The method according to the disclosure comprises the provision of a seaming tool and the provision of a monitoring device for monitoring the seaming tool. In this case, the monitoring device comprises a rotation sensor which is signal-connected to the monitoring device, by which rotation sensor the rotation of the seaming tool can be measured. The seaming tool is rotated, in particular rotated about a seaming axis, and monitored by measuring a temporal course of the rotation of the seaming tool by the rotation sensor.

[0012] In an embodiment of the disclosure, the measured temporal course of the rotation can be evaluated by the monitoring device. In this case, the evaluation can comprise, in particular, a state of wear of the seaming tool being determined from the temporal course of the rotation.

[0013] In the method according to the disclosure, several seaming tools, which can be used, in particular, for fastening a lid to a container, can also be provided and monitored. In addition, the sealer can be provided which comprises the seaming tool and the monitoring device in order to monitor the seaming tools during the operation of the sealer. Alternatively, the seaming tool and the monitoring device can also be part of a test station for checking seaming tools, which test station checks, in particular, seaming tools after their production.

[0014] In a preferred embodiment, the rotation sensor can be arranged on the seaming tool, in particular can be arranged in the seaming tool. In this case, the rotation sensor can be arranged, for example, in the seaming tool by being arranged on a cover of the seaming tool / an inner side of a housing of the seaming tool. Alternatively or additionally, the rotation sensor can be arranged with respect to the seaming tool in such a way that the rotation of the seaming tool can be measured. In particular, more than one rotation sensor can be used in order to check a single seaming tool in order to verify the measurements of the sensors.

[0015] In an embodiment of the disclosure, the rotation sensor can be a Hall sensor, that is to say a sensor which measures a voltage difference which is generated on an electrical conductor when a magnetic field is perpendicular to the flow direction of an electrical current. In this way, the rotation can be detected, since the Hall sensor can detect an approaching or departing magnetic field during the rotation.

[0016] While the rotation sensor can also be an optical sensor or gyrometer, however, it is particularly preferably the Hall sensor. In this case, the monitoring device can advantageously comprise a magnet, in particular a permanent magnet, which interacts with the Hall sensor in order to measure the rotation of the seaming tool. In this case, the Hall sensor can particularly preferably be a 3D Hall sensor. In this case, the magnet (in particular the magnets) is preferably fastened to the seaming tool or integrated into the seaming tool, and the Hall sensor is preferably fastened to the housing or in the housing of the sealer or of the device. This can be implemented in particular in that the Hall sensor is provided as part of a measuring head in the interior of the sealer / of the device. The Hall sensor can comprise a semiconductor layer which is supplied with a constant current. The current is influenced by a magnetic field component perpendicular to the current direction of the constant current, and the Hall sensor supplies an evaluatable Hall voltage which can be tapped off and used to detect the temporal course of the rotation. The Hall sensor therefore interacts with the magnet in that it is excited differently by it in dependence on the executed rotational movement of the seaming tool.

[0017] Furthermore, the monitoring device can comprise an electrical printed circuit board for generating output signals. For shielding against external interference fields, the Hall sensor can be arranged between metallic shielding elements. In this case, the metallic shielding element can at the same time form a flux concentrator for the magnetic field generated by a permanent-magnetic component. A signal change at the Hall sensor is effected by a change in the relative distance between the Hall sensor and the magnet as a result of the rotation of the seaming tool.

[0018] The seaming tool can be a seaming means (device) which can be rotated about a seaming axis, such as a seaming roller for seaming a lid on the container or a seaming head for holding and rotating the container with the lid.

[0019] Within the scope of the disclosure, the rotation sensor can measure the rotation of the seaming tool about the seaming axis, that is to say how often the seaming tool rotates within a specific time, in particular the rotation sensor can therefore measure a rotation frequency of the seaming tool. In this case, in particular a change in the rotation frequency of the seaming tool can be monitored. The state of wear of the seaming tool can in this case be determined, in particular, from abrupt changes in the rotation frequency. A sudden, in particular stepped, decrease in the rotation frequency can in this case be an indication of wear of the seaming tool. If such a change in the rotation frequency is determined by the monitoring device, a wear signal can be output, so that the corresponding seaming tool can be replaced.

[0020] Particularly preferably, in the method according to the disclosure, the rotation of the seaming tool is measured after the end of a sealing operation of the container and / or the rotation of the seaming tool is measured when the seaming tool (in particular the seaming roller) is not in engagement with the container or after the seaming tool has been in engagement with the container. If a seaming tool such as the seaming roller is no longer in contact with the container after the container has been sealed, the seaming roller continues to rotate for a certain period of time on account of the kinetic energy transmitted from the container to the seaming roller. The seaming roller therefore runs out. Sudden changes in the rotation frequency during running out, such as, for example, sudden stopping of the seaming roller, can indicate that the seaming roller is worn out. If the seaming roller runs out for too long, this can also be an indication of increasing wear.

[0021] The monitoring of the seaming tool can comprise that the measured temporal course of the rotation of the seaming tool is compared with a standard. The standard can be stored in the monitoring device and can be a course of the rotation frequency of a new / unworn seaming tool. In this case, in particular a measured standstill time (time until standstill) of the seaming tool can be compared with the standard (that is to say a standstill time of a new / unworn seaming tool).

[0022] According to the disclosure, a device for carrying out the method according to the disclosure is further proposed. The device comprises the seaming tool and a monitoring device for monitoring the seaming tool, wherein the monitoring device comprises the rotation sensor which is signal-connected to the monitoring device, by which rotation sensor the rotation of the seaming tool can be measured. In particular, the device can be the test station.

[0023] Furthermore, a sealer for carrying out the method according to the disclosure is proposed, which comprises the seaming tool for fastening a lid to a container and the monitoring device for controlling and monitoring the sealer, wherein the monitoring device comprises the rotation sensor which is signal-connected to the monitoring device, by which rotation sensor the rotation of the seaming tool can be measured.

[0024] The sealer can have an arrangement which is arranged in a working space of the sealer and has a plurality of sealing stations comprising the seaming tool. In this case, the rotation sensor can be arranged on the seaming tool and / or the sealer in such a way that the seaming tool can be monitored by a measurement of the rotation of the seaming tool about the seaming axis.

[0025] In an embodiment of the disclosure, the monitoring device can be part of a controller of the sealer. by the method according to the disclosure, it can be made possible to assign the state of wear to each seaming tool in the controller. For this purpose, each seaming tool is equipped by a sensor system (that is to say a rotation sensor) which makes it possible to measure the rotation of the seaming tool.

[0026] The seaming means is preferably arranged removably on one end of the seaming shaft, that is to say can be fastened to the seaming shaft via a fastening mechanism and can thus be exchanged (for example for a tool change). The seaming shaft can be configured as a seaming head shaft and the seaming means can be configured as the seaming head for fixing the can lid on the can body. The seaming axis is then the axis about which the seaming head shaft or the seaming head rotates in the operating state. Alternatively or additionally, the seaming shaft can be configured as a seaming roller shaft and the seaming means can be configured as the seaming roller for seaming the can lid onto the can body. The seaming axis is then (alternatively or additionally) the axis about which the seaming roller shaft or the seaming roller rotates in the operating state.

[0027] Each seaming tool can have the rotation sensor at the same point of a stator (that is to say a part of the seaming tool / of the seaming tool which is static / immovable in the operating state / during the sealing of the container). Since increased hygiene requirements are intended to be met in the working space of the sealer, the rotation sensor can be countersunk in an upper part of the sealer and can only move into the working space when monitoring of the seaming tools is carried out. The rotation sensor can therefore be arranged on the sealer in such a way that it can be introduced into the working space.

[0028] In an embodiment of the disclosure, a limit value for a specific parameter of the rotation can be stored in the monitoring device and, after the limit value for the seaming tool has been reached, a wear signal can be output via the monitoring device. This wear signal can either inform the user and / or stop the sealer, in order thus to allow timely replacement / timely checking of the seaming tools.

[0029] The sealing of the container can comprise the positioning of the container on a lifting station of the sealing station and the seaming of the lid to the container with the seaming roller and the seaming head. Finally, the sealed container can be removed from the working space of the sealer.

[0030] The sealing station can comprise a sealing head for sealing the container with the lid. In this case, the sealing head can comprise the seaming means for seaming the lid to the container. The seaming means can in this case be the seaming roller and the seaming head. The or each sealing head can therefore comprise at least one seaming roller (particularly preferably two seaming rollers) and a seaming head. In this case, the sealing head can comprise a seaming shaft or seaming roller bolt which can be rotated about a seaming axis, wherein the seaming means is arranged on one end of the respective seaming shaft / of the respective seaming roller bolt (seaming head and seaming roller can therefore be rotated in particular via the respective seaming shaft / the respective seaming roller bolt).

[0031] In particular, two seaming rollers can be arranged on a seaming lever, in each case one seaming roller for a first seaming operation and one seaming roller for a second seaming operation. However, the first and the second seaming roller can also be arranged on a separate seaming lever. The sealer according to the disclosure or the arrangement can further comprise the lifting station (or a plurality of lifting stations) for lifting the container. In this case, the lifting stations can be arranged opposite the sealing heads in the arrangement.

[0032] The sealer according to the disclosure is preferably configured as a can sealer. In this case, the container can be a can and the lid can be a can lid, which are seamed together by the can sealer. The can sealer usually has, as an arrangement, several similar sealing stations (preferably sealing heads and lifting stations) which are arranged in the form of a carousel, in which sealing stations in each case one can is sealed with a can lid.

[0033] In the operating state of the can sealer, the seaming rollers are brought with their respective seaming profile into contact with a can lid flange of the can lid and a can flange of the can. By rotation of the can, the seaming roller is then rotated in the circumferential direction of the can, whereby the can flange is seamed with the can lid flange. For rotation of the can, the can is preferably clamped between the seaming head and the lifting station, the seaming head being rotated about the seaming axis with the seaming shaft.

[0034] Within the scope of the disclosure, the can can be understood to mean a rotationally symmetrical container which is sealed by the can sealer and the associated seaming roller. A can can preferably comprise a metal, in particular aluminum or steel.

[0035] In principle, the sealer can preferably comprise at least two types of seaming rollers with preferably different seaming profiles (wherein the corresponding sealing head comprises seaming rollers of both types), so that cans can be sealed according to a double seaming principle in which the cans are as a rule sealed in two stages. In this case, in each case one type of seaming roller is responsible for one stage. The first type of seaming roller produces a preliminary seam (first seaming operation), while the second type of seaming roller completely seals the can / the bundle (second seaming operation).

[0036] When the can is clamped in the sealing station between the lifting station and the seaming head, the first seaming operation takes place with the first seaming roller of the sealing station, but the second operation preferably takes place with the second seaming roller of another (adjacent) sealing station. Therefore, when sealing a can, the seaming rollers of two sealing stations can always be involved.BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The disclosure is explained in more detail below on the basis of exemplary embodiments with reference to the drawings.

[0038] FIG. 1 is a plan view of a can sealer;

[0039] FIG. 2 is a side view of a sealing station;

[0040] FIG. 3 is a seaming roller;

[0041] FIG. 4 is a comparison of rotation frequencies of seaming rollers.DETAILED DESCRIPTION

[0042] FIG. 1 shows a plan view of a can sealer 1000 according to the disclosure.

[0043] The can sealer 1000 according to FIG. 1 comprises two lid supply devices 11 for supplying a lid 101 to a lid feeder 10, which transports the lids 101 to the can 100.

[0044] In this case, the lid feeder 10 comprises a lid movement device 4, which is arranged movably in such a way that the lid 101 can be moved to the can 100 by the lid movement device 4. For this purpose, the lid movement device 4 is fastened to a shaft and is arranged rotatably by this shaft, so that the lid 101 can be moved by a rotation of the lid movement device 4.

[0045] Furthermore, the lid feeder 10 comprises a lid guide 15A, 15B, which is arranged on the lid movement device 4, for guiding the lid 101 to the can 100. For this purpose, the lid guide 15A, 15B has a first rail 15A and a second rail 15B running parallel to the first rail 15A, wherein the lid 101 is arranged between the rails 15A, 15B in such a way that the lid 101 is guided by the movement of a lid carrier 19 of the lid movement device 4 between the rails 15A, 15B in the direction of point Z, where the lid 101 is united with the can 100 running in along A from a container feeder 12.

[0046] Furthermore, the sealer 1000 comprises a seaming process / arrangement 14 with sealing stations in the form of seaming stations for sealing the can 100 with the lid 101. In this case, the seaming process 14 is arranged in a working space 2 of the can sealer 1000, which working space is surrounded by a housing 3.

[0047] In this case, the lid 101 is introduced along C by the lid supply device 11 into the working space 2 of the can sealer 1000 and is guided from the lid guide 15A, 15B to the can 100.

[0048] However, before the lids are placed on the lid guide 15A, 15B, a de-stacking process takes place, in which the lids 101 are separated individually from a stack.

[0049] The cans 100 with lid 101 are then guided to the seaming process 14. During the feeding to the seaming process 14, the can 100 and the lid 101 are gassed with a gassing device 5 arranged in a stationary manner on the lid feeder 10 and the container feeder 12. The can 100 with the lid 101 is then clamped and sealed by the seaming process 14. The sealed can is conveyed by a further rotor into a can outlet 18.

[0050] FIG. 2 shows a schematic illustration of a sealing station 1 with the can 100 to be sealed and the can lid 101, in which a monitoring device 20 is connected to rotation sensors 21, 22.

[0051] The sealing station 1 comprises a can support with lifting station 23, a seaming head 9 and a seaming roller 8 which is mounted rotatably about a seaming shaft and has a seaming roller profile 111. The can lid 101 is arranged in a centered manner over the opening of the can 100. The can 100 has a circumferential can flange in the region of the can opening, and the can lid 101 has a circumferential can lid flange.

[0052] During the sealing operation, the seaming roller 8 is brought into contact with the can flange and the can lid flange via the seaming roller profile 111. In this case, the can flange and the can lid flange are pressed together by a substantially radially acting force via the seaming roller 8. In this case, the pressing is effected by continuous rolling of the seaming roller 8 in the circumferential direction along the circumference of the can opening.

[0053] For seaming, the can 100 is rotated in this case by a clamping device comprising lifting station 23 and seaming head 9, by the seaming head 9 being rotated about the seaming axis X with the seaming shaft.

[0054] Monitoring of the seaming roller 8 and / or of the seaming head 9 can be carried out by the monitoring device 20.

[0055] For this purpose, the seaming roller 8 comprises a first permanent magnet 6 and the seaming head 9 comprises a second permanent magnet 7. In addition, the rotation sensors 21, 22 which are signal-connected to the monitoring device 20 are arranged on the seaming roller 8 or the seaming head 9 in such a way that the permanent magnets 6, 7 can act on the rotation sensors 21, 22, that is to say the permanent magnet 6 acts on the rotation sensor 21 and the permanent magnet 7 acts on the rotation sensor 22.

[0056] In this case, the rotation sensors 21, 22 are Hall sensors 21, 22. For monitoring of the seaming roller 8 and of the seaming head 9, the seaming head 9 is rotated with can 100 and lifting station 23. Since the seaming roller 8 moves in the circumferential direction along the circumference of the can opening, the seaming roller 8 is also set in rotation. After the end of a sealing operation of the can 100, that is to say when the seaming roller 8 and the seaming head 9 are no longer in engagement with can 100 and lid 101, a temporal course of the rotation or a rotation frequency of seaming roller 8 and seaming head 9 is detected by the rotation sensors 21, 22. In this case, running out of the seaming roller 8 is of interest in particular. Of course, only the seaming roller 8 or only the seaming head 9 can also be monitored.

[0057] In order to monitor the seaming roller 8 and the seaming head 9, the Hall sensors 21, 22 are supplied with a constant current by the monitoring device 21. A magnetic field component perpendicular to the current direction acts on the constant current by the permanent magnets 6, 7, and the Hall sensor supplies an evaluatable Hall voltage which is tapped off by the monitoring device 20 and is used to detect the rotation frequency. In this case, seaming roller 8 and seaming head 9 can in each case comprise a plurality of permanent magnets.

[0058] If sudden changes in the rotation frequency, such as sudden stopping of the seaming roller 8 during running out of the seaming roller 8, are detected, this is recognized by the monitoring device 20. The monitoring device 20 can then indicate, by an output signal, that the corresponding seaming roller 8 is worn out and replacement / checking is necessary.

[0059] In addition, a standard for the temporal course of the rotation of seaming roller 8 and / or seaming head 9 can be stored in the monitoring device 20. The measured course of the rotation frequency is then compared with the standard by the monitoring device. In this case, not only sudden changes can be detected as a deviation from the standard, but also a comparison of the standstill times can take place. If a seaming roller 8 runs out for too long, this can be an indication of wear, in particular wear of the bearing.

[0060] The monitoring of the seaming roller 8 and / or of the seaming head 9 can be effected either after each sealing of a can 100 or at regular intervals, for example after 1000, 10000 or 100000 cans. The desired interval for monitoring can be stored in the monitoring device 20 and can be reduced in particular with increasing number of sealed cans.

[0061] FIG. 3 shows a preferred embodiment of a seaming roller 8 for the method according to the disclosure. The seaming roller 8 comprises four permanent magnets 6 (in principle, any desired plurality of permanent magnets 6, such as 2 or 3 permanent magnets, can also be used). The permanent magnets 6 are arranged on a seaming roller lid 60 of the seaming roller 8, which lid covers a bearing of the seaming roller 8. Alternatively, the permanent magnets 6 can also be arranged on an inner side of the seaming roller lid 60.

[0062] FIG. 4 shows a comparison of a rotation frequency 81 of a worn-out seaming roller with a rotation frequency 82 of a good seaming roller (which can be used, in particular, as a standard). A comparison of the rotation frequency of running-out seaming rollers is shown.

[0063] It can be seen that, in contrast to the rotation frequency 82, the rotation frequency 81 of the worn-out seaming roller decreases more slowly.

[0064] That is to say the time until the worn-out seaming roller comes to a standstill (that is to say the standstill time / runout time) is longer than in the case of the good seaming roller.

[0065] During the sealing process, the seaming roller rotates with the cans. When the seaming process has ended, the seaming roller rotates until it comes to a standstill. The deceleration of the seaming roller until it comes to a standstill can be measured in the method according to the disclosure. The time until the seaming roller comes to a standstill is a feature of the state of wear of the seaming roller. This can be an indication of the wear of the bearing, as a result of which a replacement of the seaming roller is necessary.

[0066] In addition, further defects can be monitored with the measurements. Not only can it be checked whether the seaming roller lid detaches itself, but also the quality of the seam can be checked during the sealing of the can.

[0067] by the method according to the disclosure, up-to-date knowledge about the state of the machine and tools can thus be obtained and a standstill of the machine due to defective tools can thus be avoided. Data about the quality of tools can be collected and production losses due to poor seaming, such as, for example, so-called skidders, can be avoided.

[0068] The disclosure is not restricted to the disclosed embodiments. Other variations of the disclosed embodiments can be understood and brought about by persons skilled in the art when practicing a claimed disclosure from a study of the drawings, the disclosure and the dependent claims. In the claims, the word “comprising” does not exclude any other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality. The mere fact that certain measures are repeated in dependent claims which differ from one another does not mean that a combination of these measures cannot be advantageously used. Any reference signs in the claims should not be interpreted as restricting the scope.

Claims

1. A method for monitoring seaming tools for a sealer for sealing a container, the method comprising:providing a seaming tool and a monitoring device for monitoring the seaming tool, the monitoring device comprising a rotation sensor which is signal-connected to the monitoring device, the rotation sensor measuring a rotation of the seaming tool;rotating the seaming tool;monitoring the seaming tool by measuring a temporal course of the rotation of the seaming tool by the rotation sensor2. The method according to claim 1, wherein a sealer is provided and comprises the seaming tool and the monitoring device.

3. The method according to claim 1, wherein the rotation sensor is arranged on the seaming tool.

4. The method according to claim 1, wherein the rotation sensor is arranged with respect to the seaming tool so as to be capable of measuring the rotation of the seaming tool.

5. The method according to claim 1, wherein the rotation sensor is a Hall sensor.

6. The method according to claim 1, wherein the seaming tool is a seaming device configured to be rotated about a seaming axis.

7. The method according to claim 6, wherein the seaming device is a seaming roller configured to seam a lid to the container.

8. The method according to claim 1, wherein a rotation frequency of the seaming tool is measured by the rotation sensor.

9. The method according to claim 1, wherein the rotation of the seaming tool is measured after completion of a sealing operation of the container or the rotation of the seaming tool is measured when the seaming tool is not in engagement with the container.

10. The method according to claim 1, wherein the monitoring of the seaming tool comprises the measured temporal course of the rotation of the seaming tool being compared with a standard.

11. The method according to claim 10, wherein a measured standstill time of the seaming tool is compared with the standard.

12. A device for carrying out the method of claim 1, comprising:the seaming tool; andthe monitoring device configured to monitor the seaming tool, the monitoring device comprising the rotation sensor signal-connected to the monitoring device, and configured to measure the rotation of the seaming tool.

13. A sealer for carrying out the method of claim 1, comprisingthe seaming tool configured to fasten a lid to the container; andthe monitoring device configured to control and monitor the sealer, the monitoring device comprising the rotation sensor signal-connected to the monitoring device, by and configured to measure the rotation of the seaming tool.

14. The sealer according to claim 13, further comprising an arrangement s arranged in a working space of the sealer and having a plurality of sealing stations comprising the seaming tool.

15. The sealer according to claim 13, wherein the rotation sensor is arranged on the seaming tool or the sealer such that the seaming tool is capable of being monitored by measurement of the rotation of the seaming tool about a seaming axis.

16. The method according to claim 1, wherein a rotation frequency of the seaming tool is measured by the rotation sensor, the rotation sensor monitoring a change in the rotation frequency of the seaming tool is monitored.

17. The method according to claim 1, wherein the rotation sensor is arranged in the seaming tool.

18. The method according to claim 1, wherein the rotation sensor is a Hall sensor and the seaming tool comprises in particular a permanent magnet.

Images