Method for monitoring crimping tools

Abstract

A reliable method for monitoring the wear of crimping tools. [Solution] A method for monitoring a crimping tool for sealing a container, comprising a crimping tool (8,9) and a monitoring device (20) for monitoring the crimping tool (8,9), wherein the monitoring device (20) is equipped with rotation sensors (21,22) that are signal-connected to the monitoring device (20), the rotation sensors enable the measurement of the rotation of the crimping tool (8,9), and the method monitors the crimping tool (8,9) by rotating the crimping tool (8,9) and measuring the time elapsed of the rotation of the crimping tool (8,9) using the rotation sensors (21,22).

Description

Technical Field

[0001] The present invention relates to a method for monitoring a can sealer tightening tool. The present invention further relates to an apparatus and a can sealer for carrying out the method according to the present invention.

Background Art

[0002] When filling a beverage can or a food can, the can passes through a can sealer after being filled with the beverage or food, the filled can flows through a feed path, and the can lid flows through a further feed path. The can sealer usually has several similar arrangements arranged in the form of a rotary conveyor, and in each arrangement, one can is sealed with a can lid. In this case, the can lid is guided onto the can and held on the can by a tightening head. This holding also serves to fix the can so that the can does not escape from the circular path through which the can passes within the can sealer due to centrifugal force. In this case, in the can sealer, the can with the can lid is tightened at the edge via a tightening roller and thereby sealed. In this case, generally, the can with the can lid is further rotated about the symmetry axis of the can itself by the tightening head. For the rotation, the tightening roller and the tightening head are arranged on respective tightening shafts or tightening roller bolts.

[0003] General-purpose can sealers are described in German Patent Application Publication No. 749636 and German Patent Application Publication No. 4234115. The can sealer includes a tightening device for receiving the sealed can. In the operating state, the sealed can is introduced into the tightening device and fixed axially and radially by the tightening device. Similarly, the can lid is centered and introduced onto the can opening of the sealed can. The can has a circumferential can flange in the region of the can opening, and the can lid has a circumferential can lid flange. In order to seal the can opening with the can lid, the can sealer further includes two tightening rollers each rotatably mounted about one axis. The tightening rollers press the can flange and the can lid flange together by a force acting substantially in the radial direction. This pressing is performed by continuously rolling circumferentially along the periphery of the can opening.

[0004] Further can sealers are well known from the specification of British Patent Application Publication No. 2098899. The can sealer comprises a clamping device for receiving the can to be sealed and a crimping roller. In operation, the can to be sealed is introduced into the clamping device and secured axially and radially by the clamping device. Similarly, the can lid is introduced centered 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.

[0005] Therefore, in order to seal the cans, a crimping tool is required, in particular, which includes the crimping roller and crimping head described above. These crimping tools deform the metal cans and lids and are therefore worn down by pressure and friction. Therefore, the crimping tools need to be replaced as needed. An important quality feature of a crimping roller is the number of cans that can be sealed with this crimping roller, as guaranteed by the manufacturer.

[0006] If the data is properly recorded, it is possible to roughly determine the number of cans sealed by the crimping roller and to roughly monitor the wear of the crimping tool. However, this requires manual recording by the user.

[0007] Therefore, there is no reliable method for monitoring the wear of the crimping tool. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] German Patent Application Publication No. 749636 [Patent Document 2] German Patent Application Publication No. 4234115 [Patent Document 3] UK Patent Application Publication No. 2098899 [Overview of the project] [Problems that the invention aims to solve]

[0009] Therefore, the object of the present invention is to provide a method, apparatus, and sealer for monitoring a crimping tool that avoids undesirable effects known from the prior art. In particular, it is necessary to enable accurate and reliable monitoring of the wear of the crimping tool of the sealer. [Means for solving the problem]

[0010] This objective is achieved by a method according to the present invention for monitoring a sealer crimping tool, and by an apparatus and sealer for carrying out the method according to the present invention.

[0011] According to the present invention, a method is proposed for monitoring a sealer crimping tool for sealing a container. The method according to the present invention includes providing a crimping tool and providing a monitoring device for monitoring the crimping tool. In this case, the monitoring device includes a rotation sensor that is signal-connected to the monitoring device, and the rotation sensor can measure the rotation of the crimping tool. The crimping tool is rotated, in particular, around a crimping shaft, and is monitored by the rotation sensor measuring the time elapsed of the rotation of the crimping tool.

[0012] In one embodiment of the present invention, the time course of the measured rotation can be evaluated by a monitoring device. In this case, the evaluation may, in particular, include the wear condition of the crimping tool determined from the time course of the rotation.

[0013] The method according to the present invention also provides and can monitor several crimping tools that can be used in particular to fasten a lid to a container. Furthermore, a sealer can be provided that includes a crimping tool and a monitoring device for monitoring the crimping tool during the operation of the sealer. Alternatively, the crimping tool and monitoring device can be part of an inspection station for inspecting the crimping tool, which in particular inspects the crimping tool after manufacturing.

[0014] In a preferred embodiment, the rotation sensor can be positioned on the crimping tool, and in particular, within the crimping tool. In this case, the rotation sensor can be positioned within the crimping tool, for example, inside the cover / housing of the crimping tool. Alternatively, the rotation sensor can be positioned relative to the crimping tool so as to be able to measure the rotation of the crimping tool. In particular, two or more rotation sensors can be used to inspect a single crimping tool and verify the measurements of the sensors.

[0015] In one embodiment of the present invention, the rotation sensor can be a Hall sensor, that is, a sensor that measures the voltage difference generated in a conductor when the magnetic field is perpendicular to the direction of current flow. In this way, since the Hall sensor can detect magnetic fields that approach or move away during rotation, it can detect rotation.

[0016] The rotation sensor may be an optical sensor or a gyrometer, but is particularly preferably a Hall sensor. In this case, the monitoring device may advantageously include a magnet, particularly a permanent magnet, that interacts with the Hall sensor to measure the rotation of the crimping tool. In this case, the Hall sensor may particularly preferably be a 3D Hall sensor. In this case, the magnet (particularly multiple magnets) is preferably fastened to or incorporated into the crimping tool, and the Hall sensor is preferably fastened to or within the housing of the sealer or device. This can be implemented in particular by providing the Hall sensor as part of a measuring head inside the sealer / device. The Hall sensor may include a semiconductor layer to which a constant current is supplied. The current is affected by the magnetic field component perpendicular to the direction of the current, and the Hall sensor supplies an evaluable Hall voltage that can be read and used to detect the passage of time of rotation. Thus, the Hall sensor interacts with the magnet by being excited differently by the magnet in response to the rotational movement performed on the crimping tool.

[0017] Furthermore, the monitoring device may include an electrical printed circuit board for generating output signals. For shielding against external interference fields, the Hall sensor can be placed between metal shielding elements. In this case, the metal shielding elements can simultaneously form a flux concentrator for the magnetic field generated by the permanent magnet component. The signal change in the Hall sensor is brought about by the change in the relative distance between the Hall sensor and the magnet as a result of the rotation of the crimping tool.

[0018] The crimping tool can be a crimping means that can be rotated around a crimping shaft, for example, a crimping roller for crimping a lid onto a container, or a crimping head for holding and rotating the container together with the lid.

[0019] Within the scope of the present invention, a rotation sensor can measure the rotation of a crimping tool around a crimping shaft, that is, it can measure the frequency at which the crimping tool rotates within a given time, and therefore, the rotation sensor can, in particular, measure the rotational speed of the crimping tool. In this case, in particular, changes in the rotational speed of the crimping tool can be monitored. In this case, the wear condition of the crimping tool can be determined, in particular, from abrupt changes in rotational speed. In this case, a sudden, especially gradual, decrease in rotational speed can serve as an indicator of wear of the crimping tool. When such a change in rotational speed is detected by the monitoring device, a wear signal can be output, and as a result, the corresponding crimping tool can be replaced.

[0020] Particularly preferably, in the method according to the present invention, the rotation of the winding tool is measured after the completion of the sealing operation of the container, and / or the rotation of the winding tool is measured when the winding tool (particularly the winding roller) is not engaged with the container, or after the winding tool is engaged with the container. When the winding tool such as a winding roller is no longer in contact with the container after the container is sealed, the winding roller continues to rotate for a certain period due to the kinetic energy transmitted from the container to the winding roller. Therefore, the winding roller runs out. For example, a sudden change in the number of rotations during run-out, such as a sudden stop of the winding roller, can indicate that the winding roller is worn. If the run-out of the winding roller is too long, this can also be used as an indicator of increased wear.

[0021] Monitoring of the winding tool can include comparing the measured time course of the rotation of the winding tool with a reference. The reference can be stored in the monitoring device and can be the time course of the number of rotations of a new / unworn winding tool. In this case, in particular, the measured stationary time (time until stationary) of the winding tool can be compared with the reference (i.e., the stationary time of a new / unworn winding tool).

[0022] According to the present invention, an apparatus for implementing the method according to the present invention is further proposed. The apparatus includes a winding tool and a monitoring device for monitoring the winding tool. The monitoring device includes a rotation sensor that is signal-connected to the monitoring device, and the rotation of the winding tool can be measured by the rotation sensor. In particular, the apparatus can be an inspection station.

[0023] Furthermore, a sealer for implementing the method according to the present invention is proposed. The sealer includes a winding tool for fastening a lid to a container and a monitoring device for controlling and monitoring the sealer. The monitoring device includes a rotation sensor that is signal-connected to the monitoring device, and the rotation of the winding tool can be measured by the rotation sensor.

[0024] The sealer can have an arrangement in which a plurality of sealing stations equipped with winding tools are arranged within the working space of the sealer. In this case, the rotation sensor can be arranged on the winding tool and / or the sealer so that the rotation of the winding tool about the winding axis can be measured to monitor the winding tool.

[0025] In one embodiment of the present invention, the monitoring device can be part of the control unit of the sealer. By the method according to the present invention, it is possible to assign a wear state to each winding tool in the control unit. For this purpose, each winding tool is equipped with a sensor system (i.e., a rotation sensor) that enables measurement of the rotation of the winding tool.

[0026] The winding means is preferably removably arranged at one end of the winding shaft. That is, the winding means can be fastened to the winding shaft via a fastening mechanism and thus can be replaced (for example, to replace the tool). The winding shaft can be configured as a winding head shaft, and the winding means can be configured as a winding head for fixing the can lid to the can body. In that case, the winding axis is the axis about which the winding head shaft or the winding head rotates in the operating state. Alternatively or additionally, the winding shaft can be configured as a winding roller shaft, and the winding means can be configured as a winding roller for winding the can lid onto the can body. In that case (alternatively or additionally), the winding axis is the axis about which the winding roller shaft or the winding roller rotates in the operating state.

[0027] Each winding tool can have a rotation sensor at the same point of the stator (i.e., the winding tool that remains stationary / moves not during the sealing of the container / in the operating state / a part of the winding tool). Since the increased hygiene requirements are intended to be met within the working space of the sealer, the rotation sensor can be embedded in the upper part of the sealer and can only move into the working space when the monitoring of the winding tool is being carried out. Therefore, the rotation sensor can be arranged on the sealer so that it can be introduced into the working space.

[0028] In one embodiment of the present invention, a limit value for a specific rotation parameter can be stored in a monitoring device, and a wear signal can be output via the monitoring device after the limit value for the crimping tool is reached. This wear signal can be used to notify the user and / or stop the sealer in order to enable timely replacement / inspection of the crimping tool.

[0029] Container sealing may include positioning the container on the lifting station of the sealing station and crimping the lid onto the container using crimping rollers and a crimping head. Finally, the sealed container can be removed from the sealer's workspace.

[0030] A sealing station may include a sealing head for sealing a container with a lid. In this case, the sealing head may include a crimping means for crimping the lid onto the container. In this case, the crimping means may be a crimping roller and a crimping head. Therefore, the sealing head or each sealing head may include at least one crimping roller (particularly preferably two crimping rollers) and a crimping head. In this case, the sealing head may include a crimping shaft or a crimping roller bolt, the crimping shaft or crimping roller bolt being able to rotate about a crimping axis, and the crimping means being positioned at one end of each crimping shaft / each crimping roller bolt (therefore, the crimping head and crimping roller can rotate particularly via each crimping shaft / each crimping roller bolt).

[0031] In particular, two crimping rollers can be arranged on the crimping lever, one crimping roller for a first crimping operation and one crimping roller for a second crimping operation, respectively. However, the first and second crimping rollers can also be arranged on separate crimping levers. The sealer, or arrangement according to the present invention, may further comprise a lifting station (or a plurality of lifting stations) for lifting the container. In this case, the lifting station may be positioned opposite the sealing head in this arrangement.

[0032] The sealer according to the present invention is preferably configured as a can sealer. In this case, the container can be a can and the lid can be a can lid, and these are crimped together by the can sealer. The can sealer typically has several similar sealing stations (preferably sealing heads and lifting stations) arranged in the form of a rotating conveyor, and at each sealing station, one can is sealed with a can lid.

[0033] In the operation of the can sealer, the crimping rollers contact the can lid flange and the can flange of the can at their respective crimping profiles. By rotating the can, the crimping rollers then rotate circumferentially around the can, thereby crimping the can flange to the can lid flange. To rotate the can, the can is preferably clamped between the crimping head and the lifting station, and the crimping head rotates around the crimping axis together with the crimping shaft.

[0034] Within the scope of the present invention, a can can be understood to mean an axially symmetrical container that is sealed by a can sealer and associated crimping rollers. The can may preferably be made of metal, particularly aluminum or steel.

[0035] In principle, the sealer may preferably be equipped with at least two types of crimping rollers having different crimping profiles (the corresponding sealing head may be equipped with both types of crimping rollers), and as a result, the cans can be sealed according to a double crimping principle in which the cans are generally sealed in two stages. In this case, each type of crimping roller is responsible for one stage. The first type of crimping roller creates a preliminary seam (first crimping operation), and the second type of crimping roller completely seals the cans / bundles (second crimping operation).

[0036] When the can is tightened at the sealing station between the lifting station and the crimping head, the first crimping operation is performed by the first crimping roller of the sealing station, while the second operation is preferably performed by the second crimping roller of another (adjacent) sealing station. Therefore, when sealing the can, the crimping rollers of both sealing stations can always be involved.

[0037] The present invention will be described in more detail below with reference to the drawings, based on exemplary embodiments. [Brief explanation of the drawing]

[0038] [Figure 1] This is a plan view of a can sealer. [Figure 2] This is a side view of the sealing station. [Figure 3] This is a diagram showing a crimping roller. [Figure 4] This diagram shows a comparison of the rotational speeds of the crimping rollers. [Modes for carrying out the invention]

[0039] Figure 1 shows a plan view of the can sealer 1000 according to the present invention.

[0040] The can sealer 1000 shown in Figure 1 is equipped with two lid supply devices 11 for supplying lids 101 to the lid supply unit 10, and the lid supply unit 10 transports the lids 101 to the can 100.

[0041] In this case, the lid feeding unit 10 is equipped with a lid moving device 4, which is movably positioned to move the lid 101 onto the can 100. For this purpose, the lid moving device 4 is fixed to a shaft and rotatably positioned by this shaft, so that the lid 101 can be moved by the rotation of the lid moving device 4.

[0042] Furthermore, the lid feeding section 10 is equipped with lid guides 15A and 15B, which are located on the lid moving device 4 and guide the lid 101 onto the can 100. For this purpose, the lid guides 15A and 15B have a first rail 15A and a second rail 15B extending parallel to the first rail 15A. The lid 101 is positioned between rails 15A and 15B such that the lid carrier 19 of the lid moving device 4 moves between rails 15A and 15B, guiding the lid 101 in the direction of point Z. Here, the lid 101 is integrated with the can 100 flowing along A from the container feeding section 12.

[0043] Furthermore, the sealer 1000 includes a crimping process / arrangement 14 having a sealing station in the form of a crimping station for sealing the can 100 with a lid 101. In this case, the crimping process 14 is located in the working space 2 of the can sealer 1000, which is enclosed by a housing 3.

[0044] In this case, the lid 101 is introduced along C into the working space 2 of the can sealer 1000 by the lid supply device 11 and guided to the can 100 by the lid guides 15A and 15B.

[0045] However, before the lids are placed on the lid guides 15A and 15B, a destacking process is performed to separate the lids 101 individually from the stack.

[0046] Next, the can 100 with the lid 101 attached is guided to the crimping process 14. While being fed to the crimping process 14, the can 100 and the lid 101 are treated with gas by the gas treatment device 5 which is stationary in the lid feeding section 10 and the container feeding section 12. Then, the can 100 with the lid 101 attached is crimped and sealed by the crimping process 14. The sealed can is then transported to the can outlet 18 by a further rotor.

[0047] Figure 2 shows a schematic diagram of a sealing station 1 having a sealed can 100 and a can lid 101, and the monitoring device 20 is connected to rotation sensors 21 and 22.

[0048] The sealing station 1 comprises a can support having a lifting station 23, a crimping head 9, and a crimping roller 8, the crimping roller 8 being rotatably mounted around a crimping shaft and having a crimping roller profile 111. The can lid 101 is centered and positioned over the opening of the can 100. The can 100 has a circumferential can flange in the area of ​​the can opening, and the can lid 101 has a circumferential can lid flange.

[0049] During the sealing operation, the crimping roller 8 contacts the can flange and can lid flange via the crimping roller profile 111. In this case, the can flange and can lid flange are pressed together by a force acting substantially radially through the crimping roller 8. This pressing is achieved by continuously rolling the crimping roller 8 circumferentially along the periphery of the can opening.

[0050] For crimping, in this case, the can 100 is rotated by a crimping device comprising a lifting station 23 and a crimping head 9, by the crimping head 9 rotating together with the crimping shaft around the crimping axis X.

[0051] Monitoring of the crimping roller 8 and / or crimping head 9 can be performed by the monitoring device 20.

[0052] For this purpose, the crimping roller 8 is equipped with a first permanent magnet 6, and the crimping head 9 is equipped with a second permanent magnet 7. Furthermore, the rotation sensors 21 and 22, which are signal-connected to the monitoring device 20, are positioned on the crimping roller 8 or the crimping head 9 so that the permanent magnets 6 and 7 can act on the rotation sensors 21 and 22, that is, the permanent magnet 6 acts on the rotation sensor 21 and the permanent magnet 7 acts on the rotation sensor 22.

[0053] In this case, the rotation sensors 21 and 22 are Hall sensors 21 and 22. For monitoring the crimping roller 8 and crimping head 9, the crimping head 9 is rotated together with the can 100 and the lifting station 23. The crimping roller 8 also rotates as it moves circumferentially along the periphery of the can opening. After the sealing operation of the can 100 is complete, i.e., when the crimping roller 8 and crimping head 9 are no longer engaged with the can 100 and the lid 101, the elapsed time or number of rotations of the crimping roller 8 and crimping head 9 is detected by the rotation sensors 21 and 22. In this case, there is particular interest in the runout of the crimping roller 8. Of course, it is also possible to monitor only the crimping roller 8 or only the crimping head 9.

[0054] To monitor the crimping roller 8 and the crimping head 9, a constant current is supplied to the Hall sensors 21 and 22 by the monitoring device 21. A magnetic field component perpendicular to the current direction acts on the constant current through the permanent magnets 6 and 7, and the Hall sensors supply an evaluable Hall voltage, which is read by the monitoring device 20 and used to detect the rotational speed. In this case, the crimping roller 8 and the crimping head 9 may each be equipped with multiple permanent magnets.

[0055] If a sudden change in rotational speed is detected, such as when the crimping roller 8 suddenly stops while it is running out, this is recognized by the monitoring device 20. The monitoring device 20 can then indicate, via an output signal, that the corresponding crimping roller 8 is worn and requires replacement / inspection.

[0056] Furthermore, a reference for the time elapsed of rotation of the crimping roller 8 and / or crimping head 9 can be stored in the monitoring device 20. The measured rotational speed is then compared with the reference by the monitoring device. In this case, not only can sudden changes be detected as deviations from the reference, but stop times can also be compared. If the runout of the crimping roller 8 is too long, this can be used as an indicator of wear, particularly bearing wear.

[0057] Monitoring of the crimping roller 8 and / or crimping head 9 can be performed after each can 100 is sealed, or at regular intervals, for example, after sealing 1,000, 10,000, or 100,000 cans. The desired interval for monitoring can be stored in the monitoring device 20 and can be shortened in particular as the number of sealed cans increases.

[0058] Figure 3 shows a preferred embodiment of a crimping roller 8 for a method according to the present invention. The crimping roller 8 comprises four permanent magnets 6 (in principle, two or three permanent magnets, or any desired number of permanent magnets 6 may be used). The permanent magnets 6 are arranged in a crimping roller cover 60 of the crimping roller 8, which covers the bearing of the crimping roller 8. Alternatively, the permanent magnets 6 may be arranged inside the crimping roller cover 60.

[0059] Figure 4 shows a comparison of the rotational speed 81 of a worn crimping roller and the rotational speed 82 of a good crimping roller (which can be used as a reference). It also shows a comparison of the rotational speed of a runout crimping roller.

[0060] In contrast to rotational speed 82, the rotational speed 81 of the worn crimping roller can be seen to decrease more slowly.

[0061] In other words, the time it takes for a worn crimping roller to stop (i.e., stop time / runout time) is longer than that for a good crimping roller.

[0062] During the sealing process, the crimping roller rotates with the can. Once the crimping process is complete, the crimping roller rotates until it stops. The deceleration of the crimping roller until it stops can be measured using the method according to the present invention. The time it takes for the crimping roller to stop is characteristic of the wear state of the crimping roller. This can be used as an indicator of bearing wear, and as a result, the crimping roller may need to be replaced.

[0063] Furthermore, the measurements can be used to monitor for additional defects. Not only can you check whether the crimping roller lid itself has come off, but you can also check the quality of the seams during can sealing.

[0064] The method according to the present invention allows for obtaining up-to-date knowledge regarding the condition of machinery and tools, and therefore, machine stoppages due to defective tools can be avoided. Data on tool quality can be collected, and production losses due to faulty winding, such as so-called skidders, can be avoided.

[0065] The present invention is not limited to the disclosed embodiments. Other variations of the disclosed embodiments can be understood and provided to those skilled in the art by examining the drawings, this disclosure, and dependent claims in carrying out the claimed invention. In the following claims, the word “comprising” does not exclude any other element or step, and the indefinite article “a” or “an” does not exclude the plural. The mere fact that certain measures are repeated in different dependent claims does not mean that combinations of these measures cannot be used to one's advantage. No reference numeral in the claims should be construed as limiting.

Claims

1. A method for monitoring a crimping tool (8, 9) for a sealer (1000) to seal a container (100), The invention provides a crimping tool (8, 9) and a monitoring device (20) for monitoring the crimping tool (8, 9), wherein the monitoring device (20) includes rotation sensors (21, 22) that are signal-connected to the monitoring device (20), and the rotation sensors are capable of measuring the rotation of the crimping tool (8, 9). Rotating the aforementioned crimping tools (8, 9), The rotation sensors (21, 22) are used to measure the time elapsed of the rotation of the crimping tools (8, 9) and thereby monitor the crimping tools (8, 9). Methods that include...

2. The method according to claim 1, wherein the sealer (1000) is provided, and the sealer (1000) comprises the seam fastening tools (8, 9) and the monitoring device (20).

3. The method according to claim 1 or 2, wherein the rotation sensors (21, 22) are arranged in the crimping tool (8, 9), and in particular are arranged within the crimping tool (8, 9).

4. The method according to any one of claims 1 to 3, wherein the rotation sensors (21, 22) are positioned relative to the crimping tools (8, 9) so as to be able to measure the rotation of the crimping tools (8, 9).

5. The method according to any one of claims 1 to 4, wherein the rotation sensors (21, 22) are Hall sensors (21, 22), and the crimping tools (8, 9) are particularly equipped with permanent magnets (6, 7).

6. The method according to any one of claims 1 to 5, wherein the crimping tool (8, 9) is a crimping means (8, 9) that is rotatable about a crimping shaft (X).

7. The method according to claim 6, wherein the crimping means (8, 9) is a crimping roller (8) for crimping the lid (101) onto the container (100).

8. The method according to any one of claims 1 to 7, wherein the rotational speed of the crimping tools (8, 9) is measured by the rotational sensors (21, 22), and in particular, changes in the rotational speed of the crimping tools (8, 9) are monitored.

9. The method according to any one of claims 1 to 8, wherein the rotation of the crimping tools (8, 9) is measured after the sealing operation of the container (100) is completed, and / or the rotation of the crimping tools (8, 9) is measured when the crimping tools (8, 9) are not engaged with the container (100).

10. The method according to any one of claims 1 to 9, wherein monitoring of the crimping tools (8, 9) includes the elapsed time of the measured rotation of the crimping tools (8, 9) compared to a reference.

11. The method according to claim 10, wherein the measured resting time of the crimping tool (8, 9) is compared with the standard.

12. An apparatus for carrying out the method according to any one of claims 1 to 11, comprising a crimping tool (8, 9) and a monitoring device (20) for monitoring the crimping tool (8, 9), wherein the monitoring device (20) comprises rotation sensors (21, 22) that are signal-connected to the monitoring device (20), and the rotation of the crimping tool (8, 9) can be measured by the rotation sensors.

13. A sealer for carrying out the method according to any one of claims 1 to 12, comprising: a crimping tool (8, 9) for fastening a lid (101) to a container (100); and a monitoring device (20) for controlling and monitoring the sealer (1000), wherein the monitoring device (20) comprises a rotation sensor (21, 22) which is signal-connected to the monitoring device (20), and the rotation sensor can measure the rotation of the crimping tool (8, 9).

14. The sealer according to claim 13, further comprising an arrangement (14) having a plurality of sealing stations (1) arranged in the working space (2) of the sealer (1000) and equipped with the crimping tools (8, 9).

15. The sealer according to claim 13 or 14, wherein the rotation sensors (21, 22) are positioned on the crimping tools (8, 9) and / or the sealer (1000) so as to be able to monitor the crimping tools (8, 9) by measuring the rotation of the crimping tools (8, 9) about the crimping shaft (X).

Images