Device for cutting packages

Abstract

A device (110) for cutting a package (130), the device (110) comprising a first cutting tool (211), a second cutting tool (221) which can interact with the first cutting tool (211) for cutting the package (130), and a regulation element (360), the position of the second cutting blade (221) relative to the first cutting blade and the compression force acting between the first cutting blade (211) and the second cutting blade (221) can be adjusted by means of the adjusting element (360), and wherein the adjusting element (360) comprises a positioning element (361), the control element (360) comprises a positioning element (362), by means of which the position of the second cutting blade (221) can be adjusted between a working position and a replacement position, and wherein the control element (360) comprises a compression element (362), by means of which the compression force can be adjusted in the working position.

Description

Technical Field

[0001] The utility model relates to a device for cutting packages and a method for cutting packages using the device for cutting packages. Background Art

[0002] Devices for cutting packages are known from the prior art. The devices comprise, on the one hand, a conveying device for the packaging material and, on the other hand, cutting tool assemblies, in particular a first cutting tool assembly and a second cutting tool assembly, which are arranged on opposite sides of the conveyed packaging material and are able to cut the packaging material being transported between them by means of a compressive force acting on each other.

[0003] It is known to design cutting tool assemblies in such a way that the associated cutting tool can be adjusted between a working position and a replacement position in order to enable a mode change or replacement of the cutting tool.

[0004] However, it must be ensured that the pressing force required by the cutting blade remains constant during operation of the device so that reliable cutting of the packaging can be maintained.

[0005] When refitting the cutting tool or switching modes, an undesired adjustment of the pressure force may occur, which may require a readjustment of the corresponding cutting tool. This leads to an increase in the number of refits on the one hand, and on the other hand requires a professional operator to readjust the pressure force after each refit. Utility Model Content

[0006] Starting from the known prior art, the object to be solved is therefore to provide a device for cutting packages and a method for cutting packages, with which a conversion can be carried out more easily and more reliably.

[0007] According to the utility model, the object is achieved by a device for cutting a package according to the following technical solution and a method for cutting a package according to the following technical solution. Advantageous improvements of the utility model are included in the following technical solutions.

[0008] According to the utility model, the device for cutting packaging comprises a first cutting tool, a second cutting tool and a regulating element, wherein the second cutting tool can work together with the first cutting tool to cut the packaging, and the regulating element can be used to adjust the position of the second cutting tool relative to the first cutting tool and the pressure force acting between the first cutting tool and the second cutting tool, wherein the regulating element comprises a positioning element, by means of which the position of the second cutting tool can be adjusted between a working position and a replacement position, and wherein the regulating element comprises a pressure element, by means of which the pressure force can be adjusted in the working position.

[0009] The working position is to be understood as a position in which the second cutting tool can interact with the first cutting tool so that (under a suitably adjusted pressure force) the packaging can be cut. The replacement position is to be understood as a position that is different from the working position of the second cutting tool, in particular a position that is spaced apart from the working position. There can be a spacing in a direction perpendicular to the plane in which the second cutting tool can rotate when cutting the packaging material. Independently of the adjustment of the pressure element, it can be provided that in the replacement position no pressure force acts between the first cutting tool and the second cutting tool.

[0010] In the text which follows, packaging is to be understood as meaning packaging material that is already formed into a package or that has not yet been formed into a package, for example one or more film webs.

[0011] The device according to the invention decouples the adjustment of the pressing force from the adjustment of the position of the second cutting tool, so that even in the case of repeated movement of the second cutting tool between the working position and the exchange position, the adjustment of the pressing force by the pressing element remains unchanged. This simplifies the refitting work, because after the second cutting tool is brought from the working position to the exchange position and back to the working position, it is also possible to dispense with the re-adjustment of the pressing force.

[0012] It can be provided that the device comprises an axis or shaft, on which the second cutting tool is rotatably arranged, and wherein the positioning element comprises an engagement element which can engage in a recess of the axis or shaft, wherein a first recess of the axis or shaft is assigned to the working position and a second recess of the axis or shaft is assigned to the replacement position. With this embodiment, two defined positions are determined for the positioning element, which correspond to the replacement position and the working position of the respective cutting tool. This enables a simple and positionally accurate switch between the working position and the replacement position.

[0013] In one embodiment, the positioning element comprises a prestressing element which prestresses the engagement element in the direction of one of the recesses. The recess can be a recess assigned to the working position and / or a recess assigned to the change position. This ensures that the positioning element fixes the cutting tool in this position when the cutting tool is brought from the working position to the change position or from the change position to the working position, because the engagement element cannot accidentally stay outside the recess.

[0014] The positioning element can include an actuating element for actuating the engagement element and / or a second prestressing element for prestressing the positioning element to a position corresponding to the working position or the change position. This design ensures that the cutting tool is prestressed to one of the positions (working position or change position), which prevents it from being accidentally brought to the corresponding other position.

[0015] In one embodiment, the pressure element comprises an adjustment element, by means of which the position of the second cutting tool relative to the positioning element can be adjusted. The adjustment element can be, for example, an adjustment nut or comprises an adjustment nut, which can be rotatably arranged on the thread to adjust the position of the second cutting tool relative to the positioning element.

[0016] In one embodiment, the pressure element comprises a guide along which the second cutting tool can be moved by actuating the control element. This embodiment ensures that when the pressure force is adjusted, the second cutting tool is not inadvertently brought into a position that could be tilted relative to the first cutting tool, which could lead to damage during operation.

[0017] It can be provided that the pressure element and the positioning element can be actuated independently of one another. This embodiment ensures that the pressure force can be adjusted independently of the positioning in the working position and the change position, which increases the flexibility in adjusting the pressure force.

[0018] In one embodiment, the distance between the working position and the change position in a direction is greater than the movement amplitude of the second cutting tool that can be achieved by the pressure element in this direction. The movement amplitude is to be understood here as the maximum possible change in the position of the second cutting tool by the pressure element, wherein the extreme value of the movement amplitude is arranged along this direction. Therefore, the adjustment of the pressure force can be realized as a fine adjustment of the position of the cutting tool in the working position after the second cutting tool has been brought into the working position, which ensures a more precise adjustment of the pressure force.

[0019] It can be provided that the achievable movement amplitude is less than 10% of the spacing, or less than 5% of the spacing, or less than 3% of the spacing. Thus, the adjustment of the pressing force is carried out by means of a movement with a movement amplitude that is at least one order of magnitude smaller than the movement amplitude for bringing the cutting tool from the change position to the working position, so that a change in the pressing force, in particular in the change position, has no effect or only a small effect on the position of the second cutting tool, which can reduce the risk of injury to the operator.

[0020] In one embodiment, the device comprises a movable protective device, which prevents intervention in the second cutting tool in the protective position, and a locking element, which blocks the actuation of the positioning element and / or the pressure element when the movable protective device is not arranged in the protective position. The risk of injury to the operator is thereby minimized.

[0021] The pressure element can be designed to keep the set pressure force constant independently of the actuation of the positioning element. In this embodiment, the pressure element implements a locking function that fixes the second cutting tool in the position set by the pressure element to define the pressure force, independently of whether the cutting tool is brought to the working position or the replacement position. The repeatability of the setting of the pressure force for cutting the packaging material is thus ensured.

[0022] According to the utility model, a method for cutting packages using the device for cutting packages according to one of the above-mentioned embodiments is also provided, the method comprising bringing the second cutting knife from the replacement position to the working position by operating the control element, and then adjusting the pressure force by operating the pressure element. With this method, the replacement or modification or maintenance of the device for cutting packages can be reliably ensured, and at the same time, the requirements for the operator in terms of fine adjustment of the cutting knife are reduced.

[0023] It can be provided that the setting of the pressure element remains unchanged when the positioning element is actuated. This embodiment ensures the repeatability or reproducibility of the set pressure force even after a change in the position of the second cutting tool.

[0024] In one embodiment, the method further comprises bringing the movable guard device into the guarding position and subsequently actuating the positioning element and / or the pressure element. This increases operational safety, in particular when changing the cutting tool.

[0025] All embodiments described can be combined with one another. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An embodiment of a device for cutting packaging material is shown.

[0027] Figure 2 An embodiment of a cutting tool assembly is shown.

[0028] Figure 3 Embodiments of regulatory elements are shown.

[0029] Figure 4 An embodiment of a positioning element is shown.

[0030] Figure 5 Another embodiment of a regulatory element is shown. DETAILED DESCRIPTION

[0031] Figure 1A schematic diagram of a device 110 for cutting packages is shown. The device can be a conveyor device 104, which can be designed, for example, as a continuous conveyor belt on which the packaging material 130 can be conveyed. The term package should be understood below not only as a fully formed package, but also as a raw material, in particular a film web, as shown here by way of example with a film web 130.

[0032] When the packaging material or package 130 is transported along the conveying direction T, it passes through the cutting tool assembly 100 of the device 110. The cutting tool assembly 100 comprises, for example, a frame 113, in which at least one or more first cutting tools 111 and at least one or more second cutting tools 121 can be arranged in a rotatable manner (for example around a respective first drive shaft or drive axis 101 and a second drive shaft or drive axis 102).

[0033] Preferably, one first cutting knife 111 is respectively provided with at least one second cutting knife 121, which are arranged relative to each other so that they exert a compressive force on each other. The packaging or packaging material 130 is conveyed along between the first cutting knife 111 and the second cutting knife 121, so that the packaging material is cut by the first cutting knife and the second cutting knife under the joint action of the compressive force acting between the cutting knives and the conveying of the packaging material 130. Thus, one or more separated webs 131 to 134 of the packaging material or packaging are produced.

[0034] The device 110 may also include a control unit 180, or such a control unit may be assigned to the device. The control unit may be designed to control or regulate the functions of the device and may in particular be designed as a computer or processor unit with an associated memory.

[0035] Figure 2 Shown as Figure 1 A more detailed schematic diagram of the cutting tool assembly 200 is shown.

[0036] In the embodiment shown here, the cutting tool assembly 200 comprises a frame 202 which extends above the conveying plane of the packaging material and which can be connected to a base of the device 110 , for example.

[0037] One or more second cutting knives 221 , 224 and 225 may be arranged in the frame 202 to cooperate with the corresponding first cutting knives 211 , 213 and 214 to cut the packaging material.

[0038] In the embodiment shown here, the first cutting tools 211, 213 and 214 are rotatably supported on a shaft or axis 212. In this embodiment, the axis here extends through the center of the first cutting tools 211, 213 and 214. However, this is not mandatory. It can also be provided that the cutting tools are only rotatably supported on an axis that is otherwise fixed and are rotated via a separate drive shaft, for example by means of one or more transmission mechanisms or gears.

[0039] The cutting tools 221, 224 and 225 assigned to the corresponding first cutting tools 211, 213 and 214 are also arranged in a rotatable manner. Similar to the first cutting tools, this can be achieved by rotatable support on a shaft or axis (not shown here), or by rotatable support in the cutting tool suspension part 250 and the corresponding second cutting tools 221, 224 and 225 are connected to the drive shaft via a suitable transmission element 223 to rotate the corresponding second cutting tool.

[0040] The cutting tool suspension 250 can be fixed to the frame 202, for example to the upper part 226. It is also conceivable that the respective cutting tool suspension 250 is detachably connected to the frame 202 via the connecting element 227. However, this is not mandatory.

[0041] The corresponding second cutting tools 221, 224 and 225 can preferably be arranged in a rotatable manner in the cutting tool suspension part 250, so that the cutting tool suspension part 250 is used as a frame or support part for the second cutting tools. However, the arrangement of the second cutting tools in the corresponding cutting tool suspension part 250 is not mandatory, but the cutting tools can also be arranged, for example, on a suitable shaft or axis without a corresponding cutting tool receiving part, for rotation.

[0042] The present utility model is not limited to this.

[0043] It will be described below that the position of the corresponding second cutting tool relative to the associated first cutting tool is adjusted by adjusting the position of the second cutting tool 221. It should be understood that the embodiments described below can also be implemented by connecting the control element according to the utility model to the cutting tool suspension part 250 of the corresponding second cutting tool 221, so as to achieve the adjustment of the position and / or the pressure force which is still to be described below.

[0044] Although in principle the terms first cutting tool and second cutting tool are used here essentially in a manner corresponding to their usual meaning, it is not mandatory for the first cutting tool and the second cutting tool to be designed with cutting edges for cutting through the packaging or packaging material. It can also be provided that the first cutting tool or the associated second cutting tool does not comprise a cutting edge and serves only as a counterpressure element for the associated first or second cutting tool, which counterpressure element comprises a cutting edge and achieves cutting of the packaging by a suitable pressure force between the first cutting tool and the second cutting tool.

[0045] Figure 3 The relationship between the first cutting tool 211 and the associated second cutting tool 221 is shown, wherein the second cutting tool 221 is schematically shown to be located in the cutting tool suspension part 250 associated therewith. The second cutting tool 221 is supported in a rotatable manner around a drive shaft or drive axis 222, which can in particular extend through the center of the second cutting tool 221. As mentioned above, the arrangement of the second cutting tool 221 that can rotate around the drive axis or drive axis 222 is not mandatory. It can also be provided that the second cutting tool 221 is supported in a rotatable manner around a common shaft or axis, which does not transmit a driving force to the cutting tool 221 itself, and the corresponding drive shaft or drive axis can extend parallel to the shaft or axis and transmit the driving force to the second cutting tool 221, for example via a suitable transmission mechanism.

[0046] If the first cutting tool 211 and the second cutting tool 221 are positioned appropriately relative to each other, a pressing force 390, schematically shown here, acts between the two cutting tools. In this case, the first cutting tool 211 and the second cutting tool 221 may touch each other and / or a pressing force acts on the surfaces touching each other and / or on the packaging material conveyed between them. The packaging material can be cut by the pressing force.

[0047] In order to enable replacement or cleaning of the second cutting tool 221, a regulating element 360 is provided according to the utility model, and the regulating element is designed so that the position of the second cutting tool relative to the first cutting tool 211 can be changed between a working position and a replacement position spaced apart from the working position. In the working position, the second cutting tool 221 is Figure 3The arrangement shown and / or the compressive force can be applied to the first cutting tool, wherein in the replacement position no compressive force acts between the first cutting tool 211 and the second cutting tool 221, and in particular the second cutting tool 221 can be spaced apart from the first cutting tool 221. In addition, the control element is designed according to the utility model so that the compressive force between the first cutting tool 211 and the second cutting tool 221 can be adjusted in the working position of the second cutting tool 221.

[0048] For this purpose, the regulating element 360 according to the utility model includes a positioning element 361. The positioning element is shown as a coupling element 368 (for example, in the form of a screw or bolt) and a recess (hereinafter also referred to as a receiving portion) 363 and 364 arranged in the shaft or axis 222 as a whole. Other embodiments can also be considered. In this embodiment, it is stipulated that the coupling element 368 can be engaged in each of the receiving portions 363 and 364. In the embodiment shown here, the receiving portion 363 corresponds to the position in which the cutting tool 221 is in the working position, and the recess 364 spaced apart from it corresponds to the replacement position, in which the second cutting tool 221 can be spaced apart from the first cutting tool 211, but there is no compressive force between the first cutting tool and the second cutting tool. The positioning element is designed, for example, to include a sleeve 369, which can be connected to the coupling element or the coupling element can be arranged therein. The sleeve can substantially carry the second cutting tool 221, and the movement of the second cutting tool 221 between the working position and the replacement position can be achieved by moving the sleeve after the engagement element 368 is disengaged. If the engagement element 368 is brought into the corresponding recess 363 or 364 again, the second cutting tool is locked in the working position or the replacement position.

[0049] In the working position, a clearly defined pressure force that enables cutting of the packaging is advantageously present between the first cutting tool 211 and the second cutting tool 221. In order to maintain this pressure force in a reproducible manner as far as possible (in particular in a manner that is independent of whether the second cutting tool 221 is repeatedly displaced between the working position and the replacement position), according to the present invention, the control element 360 also includes a pressure element 362, which is designed to adjust the pressure force of the second cutting tool 221 on the first cutting tool 211 in the working position.

[0050] This should preferably be understood as meaning that the pressure element is able to achieve adjustment of the second cutting tool 221 relative to the regulating element 360 and in particular relative to the positioning element 361, wherein the position of the second cutting tool 221 can preferably be adjusted using the pressure element 362 in a manner that is independent of a change in the position of the second cutting tool 221 between the working position and the replacement position.

[0051] In the embodiment shown here, the pressure element 362 comprises an adjusting screw or an adjusting nut 365, which can cause the second cutting tool 221 to move relative to the positioning element 361, in particular relative to the sleeve 369. For this purpose, it can be provided that the second cutting tool 221 is arranged in a guide or on a guide 367, which can be provided, for example, as part of the sleeve 369 and can include one or more guide elements, which extend parallel to the longitudinal direction of the shaft or axis 222 and can be arranged, for example, equidistantly relative to each other along the circumferential direction of the shaft 222. For example, two or three such guide elements can be provided.

[0052] It will be understood that the second cutting tool is not fixedly connected to the adjusting element and in particular not to the guide, but can be connected to the engagement element, for example, via a holder in which the second cutting tool is rotatably mounted.

[0053] The adjusting nut or adjusting bolt 365 can be supported in a rotatable manner against the rotary bearing 381, so that the rotation of the adjusting bolt 365 causes the position of the second cutting tool 221 to change relative to the positioning element 361. As a result, in the working position of the second cutting tool 221, a fine adjustment of the distance between the first cutting tool 211 and the second cutting tool 221 can be achieved, which is independent of whether the position of the second cutting tool is adjusted to the working position or the replacement position by means of the positioning element 361.

[0054] Therefore, by adjusting the pressure element to achieve a certain pressure force of the second cutting tool 221 in the working position, the pressure force can be adjusted in a reproducible manner (i.e., in particular, independently of the readjustment of the second cutting tool between the working position and the replacement position using the positioning element), and thus remains unchanged even when the second cutting tool 221 is switched between the working position and the replacement position.

[0055] It can be provided that the pressure element includes a counter pressure element 366 (e.g. in the form of a spring) in addition to the adjusting nut or the common adjusting element 365. The counter pressure element 366 can be designed so that it forms the maximum permissible pressure force as the counter pressure and prevents the second cutting tool 221 from moving too far, for example in the direction of the first cutting tool 211 or in the direction of the counter pressure element.

[0056] Although in Figure 3In the embodiment shown, exactly one positioning element 361 is provided, but two compression elements 362 and 372 are shown here by way of example, which are arranged on opposite sides of the shaft or axis 222 as part of the control element and are connected to the second cutting tool 221. This is not mandatory, and it can also be provided that only one compression element 362 or 372 is provided. However, in order to ensure that the compression force acting on the cutting tool 221 is as uniform as possible along the entire circumference of the second cutting tool 221 and in particular to ensure that the second cutting tool is positioned in a plane perpendicular to its axis of rotation without deviation as much as possible, it can be provided that a plurality of compression elements 362 and 372 are arranged in particular equidistantly along the circumference or shaft or axis 222 of the cutting tool. This also makes it possible to fine-tune the position of the second cutting tool 221 relative to the first cutting tool 211 relative to the control element 360 and in particular relative to the positioning element 361 along the circumferential direction of the first cutting tool 221, which can improve the accuracy of the compression force.

[0057] With the aid of the regulating element according to the utility model, the pressing force of the second cutting tool 221 on the first cutting tool 211 is decoupled from the change in the position of the second cutting tool 221 between the working position and the replacement position, so that maintenance work can be completed with a smaller adjustment amount when the second cutting tool 221 returns to the working position.

[0058] Figure 4 Other embodiments of positioning elements 361 of control elements are shown. Figure 3 In the embodiment shown, the engagement element 368 is generally designed as a screw. Figure 4 middle.

[0059] However, in Figure 4 In the embodiment shown, the screw is arranged in a guide 481 or a receiving portion 481 of the positioning element (for example, it can be part of a sleeve 369). In order to manipulate the engagement element 368, an operating element 385 can be provided, which is arranged here in a manner that can be moved along the direction of the double arrow shown to promote the movement of the engagement element 368 in the direction of the recess 363 or the recess 364 (depending on the positioning of the positioning element). The operating element can be implemented, for example, as a handle or a button, and in particular arranged away from the positioning element 361. As a result, the distance between the operator and the regulating element and therefore also the distance to the second cutting tool 221 can be increased, which can minimize the risk of injury.

[0060] In addition or alternatively, it can be provided that the positioning element comprises a preload element 482, and the engaging element 368 is preloaded in the direction of the recess 363 or 364, so that when the engaging element 368 is positioned in the region of the corresponding recess 363 or 364, the preload element 482 moves the engaging element 368 into the recess 363 or 364 without the operator having to manipulate this. This achieves a reliable fixation of the positioning element and therefore the second cutting tool 221 in the working position or in the replacement position.

[0061] It can be provided that the actuating element and the pretensioning element 482 together realize a bayonet connection, so that when the engaging element 368 is actuated via the actuating element 385 while the engaging element 368 is pretensioned in the recess 363 or 364 by the pretensioning element 484, the pretensioning is released and the engaging element 368 moves into a released position in which it is no longer engaged in the recess 363. When the actuating element 384 is actuated again, the pretensioning effect of the pretensioning element 482 can be released again, so that the engaging element 368 is pretensioned in the corresponding recess 363 or 364.

[0062] Alternatively or additionally, the positioning element can include a second pretensioning element 483, so that, for example, it can be connected to a fixed part (e.g. frame 202) 484 of the device for cutting the packaging and the positioning element 361 is pretensioned in a position corresponding to the replacement position or working position of the second cutting tool 221, in particular so that the coupling element 368 is arranged or pretensioned in the area of ​​the recess 363 or 364 associated with this position.

[0063] The prestressing element described so far can be designed in particular as a spring or include a spring, which is connected on one side to the movable part of the positioning element and on the other side is preferably connected to the fixed part of the device. Alternatively, the prestressing element can also be designed as a magnet with synonymous poles (e.g. two north poles or two south poles) facing each other, so that their repulsive force can achieve prestressing of the positioning element or the engaging element. Other embodiments are also conceivable here, for example by means of a flexible element made of a metal film, etc.

[0064] Figure 5 Other embodiments of the control element 360 are shown. They basically correspond to Figure 3 The embodiment shown in the figure can also be used in Figure 4 Each of the embodiments described in the present invention is combined.

[0065] For the sake of clarity, the positioning element and the pressure element are only schematically shown here.

[0066] In the embodiment shown here, the second cutting tool 221 is also equipped with a movable protective device 591. The protective device can be designed so that it is designed to cover at least a part of the second cutting tool 221. Thus, for example, it can be provided that the movable protective device 591 can cover the part of the second cutting tool that is not in contact with the first cutting tool 211 in the working position. In particular, it can be provided that the movable protective device covers the part of the second cutting tool 221 that is located on the side opposite to the package 130 to be cut with reference to the rotation axis R of the second cutting tool 221. If, for example, the second cutting tool is located at Figure 1 If the movable protective device is placed on the packaging 130 in the illustration of the device 110 in FIG. 1 , the movable protective device can be designed so that it completely covers the second cutting tool 221 above the rotation axis of the second cutting tool 221 .

[0067] It can be provided that the movable protective device 591 only surrounds the second cutting tool 221, without making physical contact with the second cutting tool 221. However, the relative arrangement of the movable protective device 591 in the protective position can be designed to prevent the operator from intervening in the movable protective device, and in particular to prevent intervening at the cutting edge that may be provided on the second cutting tool 221. Alternatively or additionally, it can also be provided that the movable protective device 591 fixes the second cutting tool 221 in a rotationally fixed manner, so that even if the operator unintentionally intervenes in the second cutting tool 221, at least the risk of injury related to the rotation of the second cutting tool 221 is prevented. For this purpose, when the movable protective device is brought into the protective position to prevent the operator from intervening in the second cutting tool 221, the movable protective device can be in physical contact with the second cutting tool 221.

[0068] In the embodiment described here, the device can also include a locking element 592. The locking element can be designed to lock or block the movement of the second cutting tool 221 from the working position to the replacement position and / or vice versa by means of the positioning element 361 when the movable protective device 591 is not arranged in the protective position, wherein the movable protective device at least partially shields the second cutting tool 221 from operator intervention. For this purpose, it can be provided, for example, that as long as the movable protective device is not arranged in the protective position (as shown here), the locking element does not allow the engagement element 368 to move out of the recess 363, which is assigned to the working position of the second cutting tool 221 in the embodiment shown here.

[0069] Alternatively or additionally, the locking element 592 can also prevent adjustment of the pressure force by blocking or locking the pressure element 362 so that an operator cannot actuate an adjusting element or an adjusting nut of the pressure element, for example, which can likewise minimize the risk of injury.

[0070] For this purpose, the blocking element can achieve a blocking of the movement of the positioning element and / or the pressure element or parts thereof and is not limited to limiting the possible movement of the engagement element or the adjusting nut.

[0071] Alternatively, a displacement of the sleeve 369 of the control element 360 can also be prevented, for example, by a blocking element when the movable protection device is not arranged in the protection position.

[0072] In the embodiments described so far, the positioning element 361 and the pressing element 362 are broadly described as being used to adjust the position of the second cutting tool 221 between the working position and the exchange position and for adjusting the pressing force in the working position.

[0073] In order to prevent that the adjustment of the pressure force, which is independent of the movement of the second cutting tool between the working position and the replacement position, significantly affects the position of the second cutting tool in the replacement position, or in order to prevent that the movement of the second cutting tool between the working position and the replacement position may lead to a change in the pressure force, it can be provided that the maximum movement amplitude of the second cutting tool that can be achieved by means of the pressure element is significantly smaller than the movement of the second cutting tool between the working position and the replacement position by means of the positioning element. Thus, for example, it can be provided that the distance between the cutting tool in the working position and the cutting tool in the replacement position (and therefore, for example, the distance between the associated recesses 363 and 364) is 5 mm or 1 cm. In this case or independently of this, the maximum change (movement amplitude) of the position of the second cutting tool in the working position by means of the pressure element can be less than 0.5 mm or less than 0.15 mm or less than 0.1 mm. It can generally be provided that the maximum possible movement amplitude that can be achieved by means of the pressure element is less than 10% of the distance between the cutting tool in the working position and the replacement position, in particular less than 5% or less than 3%.

Claims

1. A device (110) for cutting packages (130), characterized in that: The device (110) includes a first cutting tool (211), a second cutting tool (221) and a regulating element (360), wherein the second cutting tool can work together with the first cutting tool (211) to cut the package (130), and the regulating element can be used to adjust the position of the second cutting tool (221) relative to the first cutting tool and the pressure acting between the first cutting tool (211) and the second cutting tool (221), wherein the regulating element (360) includes a positioning element (361), by which the position of the second cutting tool (221) can be adjusted between a working position and a replacement position, and wherein the regulating element (360) includes a pressure element (362), by which the pressure force can be adjusted in the working position.

2. The device (110) according to claim 1, characterized in that The device (110) includes an axis or shaft (222), the second cutting tool (221) is arranged on the axis or shaft in a rotatable manner, and the positioning element (361) includes a coupling element (368), which can be coupled into a recess (363, 364) of the axis or shaft (222), wherein the first recess (363) of the axis or shaft (222) is assigned to the working position and the second recess (364) of the axis or shaft (222) is assigned to the replacement position.

3. The device (110) according to claim 2, characterized in that The positioning element (361) comprises a prestressing element (482) which prestresses the engagement element (368) in the direction of one of the recesses (363, 364).

4. The device (110) according to claim 2 or 3, characterized in that The positioning element (361) comprises an operating element (385) for operating the coupling element (368) and / or a second prestressing element (483) for prestressing the positioning element (361) into a position corresponding to the working position or the changing position.

5. The device (110) according to any one of claims 1 to 3, characterized in that The pressure element (362) comprises an adjustment element (365), by means of which the position of the second cutting tool (221) relative to the positioning element (361) can be adjusted.

6. The device (110) according to claim 5, characterized in that The pressing element (362) comprises a guide portion (367), and the second cutting tool (221) can be moved along the guide portion by operating the adjusting element (365).

7. The device (110) according to any one of claims 1 to 3, characterized in that The pressure element (362) and the positioning element (361) can be manipulated independently of one another.

8. The device (110) according to any one of claims 1 to 3, characterized in that The distance between the working position and the replacement position along a direction is greater than the range of movement of the second cutting tool (221) that can be achieved along the direction by the pressing element (362).

9. The device (110) according to claim 8, characterized in that The achievable movement amplitude is less than 10% of the spacing, or less than 5% of the spacing, or less than 3% of the spacing.

10. The device (110) according to any one of claims 1 to 3, characterized in that The device (110) includes a movable protective device (591) and a locking element (592), wherein the protective device prevents an operator from intervening in the second cutting tool (221) in a protective position, and the locking element locks the operation of the positioning element (361) and / or the pressure element (362) when the movable protective device (591) is not arranged in the protective position.

11. The device (110) according to any one of claims 1 to 3, characterized in that The pressure element (362) is designed to keep the set pressure force constant independently of the actuation of the positioning element (361).

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