Method for operating a laboratory mill, and modular laboratory mill

Abstract

The invention relates to a method for operating a laboratory mill, comprising the steps of: reading in (S2a) a container identifier of a milling container with which the laboratory mill is equipped in order to hold milling material; reading in a tool identifier of a milling tool with which the laboratory mill is equipped in order to comminute the milling material; selecting (S3) at least one control parameter for controlling (S5) a drive, which is designed for driving the milling tool, wherein the step of selecting is carried out depending on the read-in container identifier and the read-in tool identifier; and outputting the selected at least one control parameter to a drive control device for controlling (S5) the drive. The invention also relates to a modular laboratory mill system for comminuting milling material and to a method for operating a modular laboratory mill system of this kind.

Description

[0001] Method for operating a laboratory mill and modular laboratory mill system

[0002] Technical area

[0003] The present invention relates to a method for operating a laboratory mill. Reference is also made to a control device for carrying out such a method and a laboratory mill having such a control device.

[0004] Further reference is made to a modular laboratory mill system for comminuting material to be ground. Reference is also made to a method for operating a modular laboratory mill system and a control device configured to carry out such a method.

[0005] State of the art

[0006] Electrically driven laboratory mills are known from the prior art and are used for comminuting a material to be ground in a laboratory. In such prior art laboratory mills, a grinding tool is connected via a shaft to an electric drive to drive the grinding tool in rotation. For this purpose, it is known to perform a grinding process depending on the type of tool used.

[0007] Description of the invention

[0008] One aspect relates to a method for operating a laboratory mill. The laboratory mill can be configured to comminute a material to be ground. The laboratory mill can be operated with various grinding tools for comminuting the material to be ground. The laboratory mill can be operated with various grinding containers for holding the material to be ground. The material to be ground can be, for example, organic material or inorganic material.

[0009] The method comprises, as one step, reading a container identifier of a grinding container. The container identifier can contain identification data based on which the grinding container, a container type of the grinding container, and / or a container-specific property can be uniquely identified. The laboratory mill can be equipped with the grinding container for holding the material to be ground. The step of reading the container identifier can be performed automatically if the laboratory mill is equipped with or operated with the grinding container.

[0010] The method comprises, as a further step, reading in a tool identifier of a grinding tool. The tool identifier can contain identification data based on which the grinding tool, a tool type of the grinding tool, and / or a tool-specific property of the grinding tool can be uniquely identified. The laboratory mill can be equipped with the grinding tool for comminuting the material to be ground. The step of reading in the tool identifier can be performed automatically when the laboratory mill is equipped or operated with the grinding tool.

[0011] The method comprises, as a further step, selecting at least one control parameter for controlling a drive. The drive can be an electric drive. The electric drive can be configured to drive the grinding tool. The selecting step is carried out depending on the read-in container identifier and the read-in tool identifier. The selecting step can be carried out depending on the grinding container and / or the grinding tool with which the laboratory mill is equipped. Alternatively or additionally, the selecting step can be carried out depending on the container type of the grinding container and / or the tool type of the grinding tool with which the laboratory mill is equipped.Alternatively or additionally, the selection step can be carried out depending on the container-specific properties of the grinding container and / or the tool-specific properties of the grinding tool with which the laboratory mill is equipped. The control parameter can comprise drive data for controlling the electric drive or for driving the grinding tool.

[0012] The method comprises, as a further step, outputting the selected at least one control parameter to a drive control device for controlling the drive. The control parameter may comprise a drive command for controlling the drive, which may comprise the drive data. The control parameter may comprise a drive command for driving the grinding tool, which may be based on the drive data. A control device for operating the laboratory mill, which may be configured to carry out the method, may comprise the drive control device.

[0013] The steps of the method can be carried out automatically in order to operate the laboratory mill according to the method. Thus, the method can automatically control a drive for driving the grinding tool in combination with the grinding container and the grinding tool used, which have been selected for grinding operation by an operator of the laboratory mill. The invention is based on the finding that the drive of the grinding tool required for grinding operation can also depend, in particular, on the grinding container with which the laboratory mill is equipped to hold the grinding tool. Thus, the invention can improve the operation of a laboratory mill.

[0014] According to one embodiment of the method, this can comprise, as a further step, exchanging a grinding container with which the laboratory mill is equipped for holding a material to be ground, with the grinding container with which the laboratory mill is equipped. The grinding container with which the laboratory mill is equipped can be an exchangeable grinding container. The grinding containers can differ in at least one container-specific property. The read-in container identifier can have the container-specific property of the grinding container with which the laboratory mill is equipped. In the step of selecting the at least one control parameter, this can be carried out depending on the container-specific property of the grinding container with which the laboratory mill is equipped.Control of the drive can thus be carried out advantageously depending on a modular equipping of the laboratory mill with the grinding container.

[0015] According to a further embodiment of the method, this can comprise, as a further step, replacing a grinding tool with which the laboratory mill is equipped for comminuting a material to be ground, with the grinding tool with which the laboratory mill is equipped. The grinding tool with which the laboratory mill is equipped can be an exchangeable grinding tool. The grinding tools can differ in at least one tool-specific property. The read-in tool identifier can comprise the tool-specific property of the grinding tool with which the laboratory mill is equipped. In the step of selecting the at least one control parameter, this can be carried out depending on the tool-specific property of the grinding tool with which the laboratory mill is equipped.The drive can thus advantageously be controlled depending on the modular configuration of the laboratory mill with the grinding tool. The laboratory mill can therefore be equipped with a modular configuration of the grinding container and the grinding tool.

[0016] According to a further embodiment of the method, this can comprise, as a further step, reading the container identifier from a container identifier carrier, which the grinding container with which the laboratory mill is equipped for holding the material to be ground can have. The container identifier can be stored on the container identifier carrier. The container identifier can be actively output by the container identifier carrier. Alternatively or in addition to such active output of the container identifier, the container identifier can be passively read from the container identifier. This allows for unique recognition of the grinding container in a particularly reliable manner.

[0017] According to a further embodiment of the method, in the step of reading the container identifier, the container identifier can be read via a contact, which can be set up automatically by manually arranging, attaching, or locking the grinding container to a mill body. The contact can be set up for actively outputting the container identifier by the container identifier carrier. Alternatively or additionally, the contact can be set up for passively reading the container identifier from the container identifier carrier. The container identifier can thus be read efficiently and automatically during the manual arranging, attaching, or locking of the grinding container to the mill body.According to a further embodiment of the method, the contact can be a spring contact, which can be set up automatically by manually arranging, attaching, or locking the grinding container to the mill body. According to a further embodiment of the method, in the step of reading the container identifier, the container identifier can have identification data that identify a container type of the grinding container. The container type can indicate that the grinding container is a grinding container set up for continuous grinding operation or a grinding container set up for discontinuous grinding operation. Continuous operation or discontinuous operation of the drive required for grinding operation can thus be detected using the method.

[0018] According to a further embodiment of the method, this can comprise, as a further step, reading in an operating orientation of the grinding container, in which the grinding container is oriented relative to a mill body for a grinding operation. The operating orientation can be manually set by a user. The grinding container can be pivoted on the mill body into the operating orientation. The selection step can be carried out depending on the read operating orientation. The selection step can thus be carried out depending on the read container identifier, the read tool identifier, and the read operating orientation of the grinding container.A continuous operation of the drive required for a grinding operation, in which the grinding container cannot be pivoted, or a discontinuous operation in which the grinding container can be pivoted, can thus be detected with the method.

[0019] According to a further embodiment of the method, this can comprise, as a further step, a contactless reading of the tool identifier from a tool identifier carrier. The tool identifier can be stored on the tool identifier carrier. The tool identifier carrier can actively output the tool identifier. Alternatively or additionally, the tool identifier can be passively read from the tool identifier carrier. The grinding tool with which the laboratory mill is equipped for comminuting the material to be ground can comprise the tool identifier carrier. This allows for unique recognition of the grinding tool in a particularly reliable manner. According to a further embodiment of the method, the tool identifier carrier can be an RFID transponder that holds the tool identifier. The RFID transponder can transmit the tool identifier.During the contactless reading of the tool identifier, the tool identifier can be read from the RFID transponder using an RFID reader. The RFID reader can be located on the mill body. This allows for unique identification of the grinding tool in a particularly reliable manner.

[0020] According to a further embodiment of the method, in the step of reading the tool identifier, the tool identifier can have identification data that identify a tool type of the grinding tool. The tool type can indicate, for example, that the grinding tool is a cutting tool, a knife tool, a rotor tool, an impact tool, an impact tool, a shearing tool, or a ball tool. The tool type required for the grinding operation, which can indicate a comminution process selected by the user, can thus be identified using the method. Based on the identified grinding tool, the comminution process selected by the user for the material to be ground can be determined automatically, and the drive can be controlled based on this.

[0021] According to one embodiment of the method, in the step of selecting the at least one control parameter, a control parameter for controlling an output speed of the drive can be selected depending on the read-in container identifier and / or the read-in tool identifier. The control parameter can be selected depending on the grinding container, the container type of the grinding container, and / or the container-specific property. Alternatively or additionally, the control parameter can be selected depending on the grinding tool, the tool type of the grinding tool, and / or the tool-specific property. The step of outputting the selected at least one control parameter to the drive control device can be performed to bring about an operating speed of the grinding tool.The operating speed of the grinding tool for a grinding operation can thus be selected depending on the container identifier and / or the read-in tool identifier. According to a further embodiment of the method, in the step of selecting the at least one control parameter, a control parameter for controlling an output rotational direction of the drive can be selected depending on the read-in container identifier and / or the read-in tool identifier. The control parameter can be selected depending on the grinding container, the container type of the grinding container, and / or the container-specific property. Alternatively or additionally, the control parameter can be selected depending on the grinding tool, the tool type of the grinding tool, and / or the tool-specific property.The step of outputting the selected at least one control parameter to the drive control device can be performed to establish an operating direction of the grinding tool. The operating direction of the grinding tool for a grinding operation can thus be selected depending on the container identifier and / or the read-in tool identifier. The operating direction can be a rotational direction of the grinding tool.

[0022] Another aspect relates to a control device for controlling a drive of a laboratory mill. The control device is configured to carry out the method according to the preceding aspect.

[0023] Yet another aspect relates to a laboratory mill for comminuting a material to be ground. The laboratory mill has a drive for driving a grinding tool. The laboratory mill also has the control device according to the previous aspect for controlling the drive.

[0024] Further embodiments are described below. Embodiments according to one aspect may be corresponding embodiments according to another aspect.

[0025] According to one embodiment, a method for operating a laboratory mill, comprising the steps of: reading in a container identifier of a grinding container with which the laboratory mill is equipped for holding a material to be ground, reading in a tool identifier of a grinding tool with which the laboratory mill is equipped for comminuting the material to be ground, selecting at least one control parameter for controlling a drive which is configured to drive the grinding tool, wherein the step of selecting is carried out as a function of the read-in container identifier and the read-in tool identifier, and outputting the selected at least one control parameter to a drive control device for controlling the drive.

[0026] According to a further embodiment, the method comprises the further step of exchanging a grinding container with which the laboratory mill is equipped for holding a material to be ground, with the grinding container with which the laboratory mill is equipped, wherein the grinding containers differ in at least one container-specific property. According to a further embodiment, the method comprises the further step of exchanging a grinding tool with which the laboratory mill is equipped for comminuting a material to be ground, with the grinding tool with which the laboratory mill is equipped, wherein the grinding tools differ in at least one tool-specific property.

[0027] According to a further embodiment, the method comprises the further step of reading the container identifier from a container identifier carrier provided on the grinding container with which the laboratory mill is equipped for holding the material to be ground. According to a further embodiment, the method comprises, in the step of reading the container identifier, the container identifier is read via a contact that is automatically set up by manually arranging the grinding container on a mill body. According to a further embodiment, the method comprises, wherein the contact is a spring contact that is automatically set up by manually attaching the grinding container to the mill body.According to a further embodiment of the method, wherein in the step of reading the container identifier, the container identifier has identification data which identify a container type of the grinding container, which indicates one of a grinding container set up for a continuous grinding operation or a grinding container set up for a discontinuous grinding operation.

[0028] According to a further embodiment, the method comprises the further step of reading in an operating orientation of the grinding container, in which the grinding container is oriented relative to a mill body for grinding operation, wherein the step of selecting is carried out depending on the read-in operating orientation. According to a further embodiment, the method comprises the further step of contactlessly reading out the tool identifier from a tool identifier carrier which has the grinding tool with which the laboratory mill is equipped for comminuting the material to be ground. According to a further embodiment, the method, wherein the tool identifier carrier is an RFID transponder which holds the tool identifier, and wherein in the step of contactlessly reading out the tool identifier, the tool identifier is read out from the RFID transponder by an RFID reader.According to a further embodiment of the method, wherein in the step of reading the tool identifier, the tool identifier comprises identification data which identifies a tool type of the grinding tool, which indicates one of a rotor tool, a cutting tool, a knife tool, a disk tool and a ball tool.

[0029] According to a further embodiment of the method, wherein in the step of selecting the at least one control parameter, a control parameter for controlling an output speed of the drive is selected as a function of the read-in container identifier and / or the read-in tool identifier, and wherein the step of outputting the selected at least one control parameter to the drive control device is carried out to bring about an operating speed of the grinding tool.According to a further embodiment of the method, wherein in the step of selecting the at least one control parameter, a control parameter for controlling an output rotational direction of the drive is selected as a function of the read-in container identifier and / or the read-in tool identifier, and wherein the step of outputting the selected at least one control parameter to the drive control device is carried out to bring about an operating direction of the grinding tool.

[0030] According to one embodiment, a control device for controlling a drive of a laboratory mill, which is configured to carry out the method according to one of the preceding embodiments. According to one embodiment, a laboratory mill for comminuting a material to be ground, which has a drive for driving a grinding tool and the control device according to the preceding embodiment for controlling the drive.

[0031] Another aspect concerns a modular laboratory mill system for grinding material. The material to be ground can be, for example, organic or inorganic material.

[0032] The modular laboratory mill system comprises a mill body. The mill body can be configured as a mill base. The laboratory mill can be configured as a tabletop unit, whereby the mill body can be arranged upright on a laboratory bench. The laboratory mill can also be configured as a floor-standing unit, whereby the mill body can be arranged freestanding.

[0033] The modular laboratory mill system has at least two grinding tools that can be arranged on the mill body in a modular, interchangeable manner. The modularity of the laboratory mill system can thus refer to the fact that the grinding tools form interchangeable modules of the laboratory mill system, each of which can be arranged individually on the mill body. The grinding tools can therefore be grinding modules that can be arranged on the mill body in a modular, interchangeable manner. The grinding tools can be different grinding tools.

[0034] One grinding tool of the grinding tools has a rotationally driven comminution tool, which is designed to comminute the material to be ground. The comminution tool can be arranged in a grinding container. Another grinding tool of the grinding tools has a rotationally driven grinding chamber, which is designed to hold the material to be ground. The grinding chamber itself, however, is not designed to comminute the material to be ground. The grinding chamber can be arranged in the grinding container. The grinding chamber can be a closed grinding chamber. The grinding chamber can contain grinding media, which are designed to comminute the material to be ground. The grinding media can be freely movable grinding media arranged in the grinding chamber.

[0035] The modular laboratory mill system has a drive configured to transmit torque to the grinding tools for comminuting the material to be ground. The laboratory mill system can be operated in one operating state in which one grinding tool is arranged on the mill body. The laboratory mill system can be operated in a further operating state in which the additional grinding tool is arranged on the mill body.

[0036] The drive can be configured as a contactless magnetic coupling for transmitting the torque to the comminution tool in one operating state and for transmitting the torque to the grinding chamber in the further operating state. The drive can be an electric drive. The contactless magnetic coupling non-contactingly couples the comminution tool in one operating state and the grinding chamber in the further operating state to drive components of the electric drive. The contactless magnetic coupling can non-contactingly couple the comminution tool in one operating state and the grinding chamber in the further operating state to the drive components of the electric drive. The contactless magnetic coupling can have a drive side and an output side, which can be designed as magnetic coupling halves.This allows for particularly efficient exchange of grinding tools, and the drive of a tool can be set up with a short set-up time using the contactless magnetic coupling.

[0037] The drive components of the electric drive can comprise at least one of an electric motor and a shaft for driving the drive side of the contactless magnetic coupling. The drive components can comprise the drive side of the contactless magnetic coupling. The grinding tools can each comprise the output side of the contactless magnetic coupling. The drive side and the output side of the contactless magnetic coupling can each comprise a plurality of magnets, i.e., at least two magnets, which can be magnetically coupled in pairs. The magnets can be permanent magnets.

[0038] According to one embodiment of the laboratory mill system, it can have a control device for controlling the drive. The control device can be configured to control the drive such that the torque and / or a rotational speed is transmitted to the comminution tool or the grinding chamber based on the presence of one of the operating states. The drive can therefore be designed to operate the grinding tools over a torque range and / or rotational speed range based on the presence of one of the operating states. With the modular laboratory mill system, the grinding tools can be operated with the drive over the torque range, wherein the torque range can be designed to operate the grinding tools in different grinding operating modes.With the modular laboratory mill system, the grinding tools can be operated with the drive across a wide speed range, with the speed range being designed to operate the various grinding tools in different grinding modes. This allows for efficient implementation of various requirements for driving the comminution tool or the grinding chamber.

[0039] According to a further embodiment of the laboratory mill system, the control device can be configured to control the drive in such a way that the rotational speed is transmitted to the comminution tool or the grinding chamber in a temporally fluctuating manner based on the presence of one of the operating states. Thus, temporally variable requirements for driving the grinding tool can also be realized.

[0040] According to a further embodiment of the modular laboratory mill system, the grinding tools can be pivotably mounted on the mill body in at least one of the operating states. The contactless magnetic coupling can be pivotably mounted on the mill body. Furthermore, the electric drive can also be pivotably mounted on the mill body. The electric drive, the contactless magnetic coupling, and the grinding tools can thus be pivotably mounted on the mill body in at least one of the operating states. The laboratory mill can thus be operated in different grinding modes depending on the operating orientation of the grinding tool.

[0041] According to a further embodiment of the modular laboratory mill system, the grinding tools can be operated in one operating orientation in a discontinuous grinding operation. The operating orientation can be a horizontal operating orientation, in which an axis of the grinding tool can be oriented vertically. The grinding tools can be operated in a further operating orientation in a continuous grinding operation. The further operating orientation can, in particular, be a vertical operating orientation, in which an axis of the grinding tool can be oriented horizontally.

[0042] According to a further embodiment of the modular laboratory mill system, the additional grinding tool, which has the rotationally driven grinding chamber, can be designed as a ball tool. In the further operating state, the modular laboratory mill system can be operated as a ball mill. The additional grinding tool can have grinding media that can be freely movable in the grinding chamber. The grinding media can be balls.

[0043] According to a further embodiment of the modular laboratory mill system, the grinding tool, which has the rotationally driven comminution tool, can be configured as at least one of a rotor tool, a disc tool, a cutting tool, a mortar tool, a crushing tool, an impact tool, and a knife tool. In one operating state, the modular laboratory mill system can be operated as at least one of a rotor mill, a disc mill, a cutting mill, a mortar mill, a crushing mill, an impact mill, and a knife mill.

[0044] According to a further embodiment of the modular laboratory mill system, the comminution tool can be mounted on an axle in one operating state, which axle can have a stationary position. The comminution tool can have the axle. The comminution tool can be rotatably mounted on the axle, wherein the grinding tool can be mounted on the axle via at least one ball bearing. The torque can be transmitted to the comminution tool via the contactless magnetic coupling to generate rotation of the comminution tool. To drive the comminution tool via the contactless magnetic coupling, the comminution tool can have the output side of the contactless magnetic coupling.

[0045] According to a further embodiment of the modular laboratory mill system, the grinding chamber can be mounted on an axle in the further operating state, which axle can have a stationary position. The grinding chamber can have the axle. The grinding chamber can be rotatably mounted on the axle, wherein the grinding tool can be mounted on the axle via at least one ball bearing. The torque can be transmitted to the comminution tool via the contactless magnetic coupling to generate rotation of the comminution tool. To drive the grinding chamber via the contactless magnetic coupling, the grinding chamber can have the output side of the contactless magnetic coupling.

[0046] A further aspect relates to a method for operating a modular laboratory mill system. The modular laboratory mill system can be the modular laboratory mill system according to the preceding aspect. The modular laboratory mill system according to the preceding aspect can be configured to carry out the method.

[0047] The method includes, as one step, reading in a tool identifier based on the presence of one of the operating states. The tool identifier can comprise identification data based on which the grinding tool, the additional grinding tool, a tool type, and / or a tool-specific grinding tool property can be uniquely identified. The step of reading in the tool identifier can be performed automatically when the grinding tools are exchanged or the laboratory mill is equipped or operated with the grinding tool.

[0048] The method comprises, as a further step, selecting at least one control parameter for controlling the drive. The selection step is carried out depending on the read-in tool identifier. The selection step can be carried out depending on the grinding tool with which the laboratory mill is equipped. The control parameter can comprise drive data for controlling the electric drive or for driving the grinding tool.

[0049] The method comprises, as a further step, outputting the selected at least one control parameter to a drive control device for controlling the drive. The control parameter may comprise a drive command for controlling the electric drive, which may comprise the drive data. The control parameter may comprise a drive command for driving the grinding tool, which may be based on the drive data. A control device for operating the laboratory mill, which may be configured to carry out the method, may comprise the drive control device.

[0050] According to one embodiment of the method, this can comprise, as a further step, reading in an operating orientation of the grinding tool arranged on the mill body, which is pivotably mounted on the mill body. The operating orientation can be manually adjustable by a user. The comminution tool can be pivoted into the operating orientation in one operating state and / or the grinding chamber can be pivoted into the operating orientation in the further operating state. The selection step can be carried out depending on the read operating orientation. The selection step can thus be carried out depending on the read tool identifier and the read operating orientation.

[0051] According to a further embodiment of the method, this can include, as a further step, a contactless reading of the tool identifier from a tool identifier carrier, which the grinding tool arranged on the mill body can have. The tool identifier can be stored on the tool identifier carrier. The tool identifier carrier can actively output the tool identifier. Alternatively or additionally, the tool identifier can be passively read from the tool identifier carrier.

[0052] Yet another aspect relates to a control device for controlling a drive of a modular laboratory mill system which is configured to carry out the method according to the preceding aspect.

[0053] A further aspect relates to comminuted ground material produced with a laboratory mill according to the preceding aspect. The comminuted ground material can be removed from the grinding container after the grinding operation. Alternatively or additionally, the comminuted ground material can be discharged from the grinding container during the grinding operation.

[0054] Further embodiments are described below. Embodiments according to one aspect may be corresponding embodiments according to another aspect.According to one embodiment, a modular laboratory mill system for comminuting material to be ground, comprising a mill body, at least two grinding tools which can be arranged in a modular, interchangeable manner on the mill body, wherein one grinding tool of the grinding tools has a rotationally drivable comminution tool which is designed to comminute the material to be ground, and wherein a further grinding tool of the grinding tools has a rotationally drivable grinding chamber which is designed to hold the material to be ground, and a drive which is designed to transmit a torque to the grinding tools for comminuting the material to be ground, wherein the laboratory mill system can be operated in one operating state in which the one grinding tool is arranged on the mill body and in a further operating state in which the further grinding tool is arranged on the mill body.

[0055] According to a further embodiment, the modular laboratory mill system comprises a control device for controlling the drive, wherein the control device is configured to control the drive such that the torque and / or a rotational speed is transmitted to the comminution tool or the grinding chamber based on the presence of one of the operating states. According to a further embodiment, the modular laboratory mill system comprises a control device configured to control the drive such that the rotational speed is transmitted to the comminution tool or the grinding chamber in a temporally fluctuating manner based on the presence of one of the operating states.

[0056] According to a further embodiment, the modular laboratory mill system comprises the grinding tools being pivotably mounted on the mill body in at least one of the operating states. According to a further embodiment, the modular laboratory mill system comprises the grinding tools being operable in one operating orientation, in particular in a horizontal operating orientation, in a discontinuous grinding mode, and the grinding tools being operable in a further operating orientation, in particular in a vertical operating orientation, in a continuous grinding mode.

[0057] According to a further embodiment, the modular laboratory mill system is designed as a ball tool, wherein the additional grinding tool, which has the rotationally driven grinding chamber, is designed as a ball tool. According to a further embodiment, the modular laboratory mill system is designed as at least one of a rotor tool, a disc tool, a cutting tool, a mortar tool, a crushing tool, an impact tool, and a knife tool.

[0058] According to one embodiment, a method for operating a modular laboratory mill system according to one of the preceding embodiments, comprising the steps of: reading in a tool identifier based on the presence of one of the operating states, selecting at least one control parameter for controlling the drive of the modular laboratory mill system, wherein the step of selecting is carried out depending on the read-in tool identifier, and outputting the selected at least one control parameter to a drive control device for controlling the drive.

[0059] According to a further embodiment, the method comprises the further step of reading in an operating orientation of the grinding tool arranged on the mill body, which grinding tool is pivotably mounted on the mill body, wherein the step of selecting is carried out depending on the read operating orientation. According to a further embodiment, the method comprises the further step of contactlessly reading out the tool identifier from a tool identifier carrier which the grinding tool arranged on the mill body has.

[0060] According to one embodiment, a control device for controlling a drive of a modular laboratory mill system, which is configured to carry out the method according to one of the preceding embodiments.

[0061] Short description of the characters

[0062] Figure 1 shows a perspective view of a laboratory mill according to one embodiment. Figure 2 shows the laboratory mill in a sectional view through a mill body and a grinding container of the laboratory mill according to respective embodiments.

[0063] Figure 3 shows a contactless magnetic coupling of the laboratory mill between an electric drive and a grinding tool of the laboratory mill in a sectional view according to respective embodiments.

[0064] Figure 4 shows the contactless magnetic coupling of the laboratory mill according to an embodiment in an isolated and perspective view.

[0065] Figure 5 shows an adjusting mechanism for engaging and disengaging the contactless magnetic coupling of the laboratory mill according to one embodiment.

[0066] Figure 6 shows the grinding container of the laboratory mill in a perspective view of a container bottom of the grinding container.

[0067] Figure 7 shows a grinding container carrier of the laboratory mill according to an embodiment.

[0068] Figure 8a shows the grinding container of the laboratory mill with a safety locking device according to one embodiment.

[0069] Figure 8b shows the grinding container of the laboratory mill with a safety interlock and a locking device according to respective further embodiments.

[0070] Figure 9 shows the laboratory mill with an operating group in a sectional view according to the respective embodiments.

[0071] Figure 10 shows a laboratory mill system with modularly interchangeable grinding tools according to one embodiment.

[0072] Figure 11 shows the laboratory mill in a schematic representation according to an embodiment.

[0073] Figure 12 shows a flow chart with method steps for operating the laboratory mill according to an embodiment.

[0074] Figure 13 shows a further flowchart with method steps for operating the laboratory mill according to another embodiment. Detailed description of embodiments

[0075] Figure 1 shows a laboratory mill 100. The laboratory mill 100 can be designed as a tabletop device, wherein the laboratory mill 100 can be placed on a laboratory table (not shown in the figures). The laboratory mill 100 has a mill body 2, which can have a housing 3. The housing 3 can consist of at least one housing component 4. A control device 110, shown in Figure 2, for controlling the laboratory mill 100 is arranged in the mill body 2. A power supply 1, shown in Figure 9, for supplying energy to an electric drive 40, shown in Figure 3, for driving a grinding tool 20, shown in Figure 3, can also be arranged in the mill body 2.

[0076] The laboratory mill 100 can have an operating group 210 arranged on the mill body 2. The operating group 210 can have two user interfaces 211, 221, which can be operated by a user of the laboratory mill 100 to control a grinding operation of the laboratory mill 100 in which the grinding tool 20 is operated. The user interfaces 211, 221 can be connected to the control device 110 to communicate a grinding parameter, which can be set by the user via at least one of the user interfaces 211, 221, to the control device 110. The control device 110 can be configured to control the grinding operation based on the adjustable grinding parameter.

[0077] The laboratory mill 100 may include a touchscreen 212 arranged on the mill body 2, wherein the touchscreen 212 may include the first user interface 211. The first user interface 211 may be formed on a touch-sensitive area 214 of the touchscreen 212. The touch-sensitive area 214 may be configured to recognize a grinding parameter selected by the user by touching the touch-sensitive area 214, wherein the first user interface 211 is configured to communicate the grinding parameter to the control device 110.

[0078] The laboratory mill 100 can have a second user interface 221, which can have a rotary knob 222. The rotary knob 222 can be configured to recognize a grinding parameter selected by the user by rotating the rotary knob 222. The rotary knob 222 can be designed as a rotary knob 222 that can be removed from the mill body 2. A positioning aid 216 can be arranged on the mill body 2 or on the housing 3, which predetermines a desired position of the removable rotary knob 222 on the mill body 2. The rotary knob 222 can thus be manually attached to the desired position by the user using the positioning aid 216.

[0079] The laboratory mill 100 has a grinding container 10, which can be manually attached to the mill body 2 and manually removed therefrom. The grinding container 10 can be arranged on the mill body 2 with another grinding container (not shown) in a manually interchangeable manner. The grinding container 10 has a grinding bowl 18 and a container lid 16 for closing the grinding bowl 18. The container lid 16 can have an addition opening 5 for adding grinding material to the grinding container 10. The grinding container 10 can therefore be configured for continuous grinding operation with continuous addition of grinding material into the grinding container 10 during grinding operation. The grinding container 10 can have an outlet opening 6, from which ground material comminuted in the grinding container 10 can be dispensed. The comminuted ground material can be dispensed during continuous grinding operation.

[0080] According to one embodiment of the laboratory mill 100, the grinding container 10 can have a safety interlock 70. The safety interlock 70 is configured to prevent the user from opening the container lid 16 during grinding operation. The safety interlock 70 is also configured to prevent the container lid 16 from opening in the operating state of the grinding container 10 shown in Figure 1, in which it is attached to the mill body 2.

[0081] According to one embodiment of the laboratory mill 100, the laboratory mill 100 can have a pivot joint 7 for pivoting the grinding container 10 relative to the mill body 2. The grinding container 10 can be pivoted about a pivot axis 8 relative to the mill body 2, wherein the pivot axis 8 can be designed as a horizontal pivot axis 8 when the laboratory mill 100 is standing on the laboratory bench. The grinding container 10 can thus be pivoted on the mill body 2 for continuous grinding operation. The laboratory mill 100 can be operated in discontinuous operation with the grinding container 10 in the non-pivoted state shown in Figure 1. In continuous operation, the grinding container can be pivoted approximately 90 degrees about the pivot axis 8 from the state shown in Figure 1.

[0082] Figure 2 shows the laboratory mill 100 in a section through the mill body 2 and the grinding container 10. The mill body 2 can have a grinding container support 9, on which the grinding container 10 is arranged. The grinding container support 9 can be arranged on the pivot joint 7 and can be pivoted about the pivot axis 8 relative to the mill body 2. The grinding container support 9 can thus be pivotally connected to the mill body 2 via the pivot joint 7.

[0083] The laboratory mill 100 has an electric drive 40, which can be arranged on the grinding container support 9. The electric drive 40 can be connected to a drive control device 41, which is configured to control the electric drive 40. The drive control device 41, which can be arranged in the grinding container support 9, is electrically connected to the control device 110, which is arranged in the mill body 2. The electric drive 40 can be arranged in the grinding container support 9 or on it. According to one embodiment, the electric drive 40 and the grinding container 10, which can both be arranged on the grinding container support 9, can be pivotable relative to the mill body 2. The electric drive 40 and the grinding container 10 can thus be pivoted together by means of the rotary joint 7 about the pivot axis 8 relative to the mill body 2.The laboratory mill 100 can also have an orientation sensor 34, which is configured to detect a pivot angle of the grinding container support 9 relative to the mill body 2. The orientation sensor 34 can be configured as a rotary encoder and arranged on the rotary joint 7. The orientation sensor 34 can also be configured as an inclination sensor and arranged on the grinding container support 9.

[0084] The laboratory mill 100 has a grinding tool 20 arranged in the grinding container 10. The grinding tool 20 can be manually arranged in the grinding container 10 and manually removed therefrom. The grinding tool 20 can be arranged in the grinding container 10 so that it can be manually exchanged with another grinding tool (not shown). The grinding tool 20 can be designed as a rotor tool, as in the embodiment of the laboratory mill 100 shown in the figures. The grinding tool 20 can be rotatably mounted on an axis 22 arranged in the grinding container 10. During grinding operation, in which the tool 20 is operated in rotation about the axis 22, the axis 22 can have a stationary position in the grinding container 10. The electric drive 40 can be coupled to the grinding tool 20 for driving the grinding tool 20 in rotation via a contactless magnetic coupling 42.The grinding tool 20 can have a grinding screen 19 through which the ground material is discharged. The grinding screen 19 can be cylindrical and arranged coaxially with the axis 22 so that the ground material can pass through it in a radial direction.

[0085] The laboratory mill 100 may include a vibration sensor 90, which may be arranged on the mill body 2. The vibration sensor 90 may be configured to detect vibrations of the laboratory mill 100 during grinding operation, which vibrations are generated by the rotational operation of the grinding tool 20. The vibration sensor 90 may be connected to the control device 110, wherein the control device 110 may be configured to control the grinding operation of the laboratory mill 100 based on the vibrations detected by the vibration sensor 90.

[0086] Figure 3 shows the grinding tool 20, the electric drive 40, and the magnetic coupling 42 in detail. Also shown is an adjusting mechanism 50, which is configured to engage and disengage a magnetic coupling of the contactless magnetic coupling 42.

[0087] The grinding container 10 has a container bottom 15 on which the grinding tool 20 can be arranged. The container bottom 15 can have a base plate 13, which according to one embodiment is made of zirconium dioxide. The base plate 13 can have a flat bottom surface 14 on which the grinding tool 20 can be arranged without mechanical guidance. The container bottom 15 can form a closed container bottom 15 through which no drive component for driving the grinding tool 20 is guided. The grinding tool 20 can have the axis 22, on which comminution tools 25, which according to the embodiment of the grinding tool 20 shown in the figures are designed as rotors, which can be radially mounted on the axis 22 via at least one ball bearing 26, are arranged. The comminution tools 25 can be arranged for rotational movement on the axis 22.The grinding screen 19, which surrounds the comminution tools 25, can be fixedly arranged on the axis 22. The contactless magnetic coupling 42 has an output side 43, which can be connected in a rotationally fixed manner to the comminution tools 25 and can be rotatably mounted on the axis 22 together with them via the ball bearings 26.

[0088] The axle 22 can be held on the bottom surface 14 and the container lid 16. The axle 22 can be held radially and / or axially on the bottom surface 14 and the container lid 16. The axle 22 can be held non-rotatably on the bottom surface 14 and / or the container lid 16, wherein the axle 22, the container bottom 15, and / or the container lid 16 can have an anti-rotation device (not shown in the figures), which can be configured to establish the stationary position of the axle 22. The anti-rotation device can have a rotation lock, which can be configured to absorb a residual torque that can be transmitted via the ball bearing 26 through the magnetic coupling to the axle 22 during grinding operation with the grinding tool 20 rotating. The anti-rotation device or the rotation lock can thus block a relative rotation of the axle 22 to the grinding container 10. A movement of the axle 22 in the circumferential direction of the axle 22 can thus be prevented.As shown in Figure 2, the container lid 16 can have an axle mount 27 for axially holding the axle 22 in the grinding container 10 and / or the anti-rotation device. The axle 22 can be axially and / or radially fixed between the bottom surface 14 of the axle mount 27. The position of the axle 22 in the grinding container 10 can thus be fixed in a stationary manner in the grinding container 10 by the contactless magnetic coupling 42, the axle mount 27, and / or the anti-rotation device.

[0089] The contactless magnetic coupling 42 has a drive side 45, which can be connected in a rotationally fixed manner to a rotor 46 of an electric motor 47. The electric drive 40 has the electric motor 47, which, according to the embodiment shown in the figures, can be designed as an internal rotor motor. The electric motor 47 has a stator 48, which can surround the rotor 46 and can have windings of the electric motor 47. The drive side 45 of the contactless magnetic coupling 42, which can be driven in rotation by the electric motor 47, can be magnetically coupled to the output side 43 of the contactless magnetic coupling 42 in the delivered state of the contactless magnetic coupling 42 shown in Figure 3. In the magnetic coupling of the contactless magnetic coupling 42 in the delivered state, magnetic forces act between permanent magnet pairs 44, which can have the output side 43 and the drive side 45.The comminution tools 25 can thus be driven in a contactless rotational manner in the grinding container 10 by the magnetic force. The stationary position of the axis 22 can be fixed to the flat bottom surface 14 of the container bottom 15 by the contactless magnetic coupling 42 in the grinding container 10.

[0090] The grinding tool 20 can have a tool identifier carrier 21, which can have a tool identifier for identifying the grinding tool 20. The tool identifier carrier 21 can be designed as an RFID transponder 23, which can be arranged on a bottom region of the grinding tool 20, which can be arranged on the container bottom 15. The RFID transponder 23 can be read by an RFID reader 17 shown in Figures 5 and 7, which can be arranged on the mill body 2. The RFID reader 17 can be connected to the control device 110 in order to read the tool identifier and communicate it to the control device 110.

[0091] Figure 4 shows the output side 43 and the drive side 45 of the contactless magnetic coupling 42 in an isolated view. The drive side 45 and the output side 43 can each have a plurality of permanent magnets 44', which can form magnetically coupled permanent magnet pairs 44 when the contactless magnetic coupling 42 is in the engaged state. The magnetic force between the output side 43 and the drive side 45 can thus be formed from accumulated individual magnetic forces between the permanent magnet pairs 44. The output side 43 can be rotatably mounted on the axle 22 via the ball bearings 26 shown in Figure 3, which can thus have a stationary position in the grinding container 10. The comminution tools 25 shown in Figure 3 can be non-rotatably mounted on the output side 43. The drive side 45 can be connected in a rotationally fixed manner or mechanically operatively connected to the rotor 46 of the electric motor 47 shown schematically in Figure 4.A rotational movement of the rotor 46 can thus be transmitted to the comminution tools 25 via the magnetic force of the supplied contactless magnetic coupling 42, wherein the rotational movement is not transmitted to the axis 22 on which the comminution tools 25 are rotatably mounted.

[0092] Figures 3 and 5 show the adjusting mechanism 50 for engaging and disengaging the contactless magnetic coupling 42 shown in Figure 4. The adjusting mechanism 50 is configured to move the drive side 45 of the contactless magnetic coupling 42 relative to the output side 43 of the contactless magnetic coupling 42. The adjusting mechanism 50 can have a translational adjusting mechanism configured to move the drive side 45 translationally relative to the output side 43. The adjusting mechanism 50 can be configured to move the drive side 45 translationally parallel or coaxially to the axis 22.

[0093] The adjusting mechanism 50 can have a cylindrical adjusting body 52, on which the drive side 45 can be movably guided via the electric drive 40. The adjusting body 52 can be connected in a rotationally fixed manner to an actuating member 56. The actuating member 56 can have at least one actuating receptacle 57, into which the grinding container 10 can engage when the grinding container 10 is arranged on the actuating member 56. The grinding container 10 can have at least one engagement element 12, shown in Figure 6, which can engage in the actuating receptacle 57. Rotating the grinding container 10, which engages in the actuating receptacle 57 via the engagement element 12, can cause the adjusting body 52 to rotate. The rotation of the grinding container 10 can occur when the grinding container 10 is arranged and locked on the mill body 2.

[0094] The adjusting mechanism 50 can have actuators 53, which can connect the electric drive 40 to the mill body 2. The actuators 53 can be arranged for translational movement in guide rails 54, which can be arranged on the mill body 2. The guide rails 54 can be fastened to the mill body 2 and can thus form stationary guide rails 54 in the mill body 2 for translational guidance of the actuators 53. The actuators 53 can also be guided in guide grooves 55, which can be formed in the adjusting body 52. ​​The guide grooves 55 can extend helically in sections in the cylindrical adjusting body 52. ​​The partially helical guide grooves 55 can have a constant and / or variable pitch.The translational guidance of the actuators 53 in the guide rails 54 and the helical guidance of the actuators 53 in the cylindrical actuator body 52 can cause an axial movement of the drive side 45 of the contactless magnetic coupling 42 relative to a cylinder axis of the cylindrical actuator body 52 upon rotation of the actuator body 52. ​​The resulting axial movement of the drive side 45 can be the translational movement of the drive side 45, which can occur parallel or coaxially to the axis 22.

[0095] Starting from the grinding container 10, the guide grooves 55 can have a clockwise thread. A clockwise rotation of the grinding container 10 after engagement of the grinding container 10 in the actuating receptacles 57 can cause the drive side 45, which is arranged in the adjusting body 52, to approach the output side 43. The clockwise rotation of the grinding container 10 can occur when the grinding container 10 is arranged and locked on a locking device 65, which is arranged on the mill body 2. The locking device 65 is configured to lock the grinding container 10 to the mill body 2. The grinding container 10 can thus be secured stationary on the mill body 2. The locking device 65 can have a bayonet lock 66.The clockwise rotation of the grinding container 10 can thus cause the contactless magnetic coupling 42 to be moved, whereby the electric drive 40 with the drive side 45 can be brought closer to the output side 43 and thus can be moved with it.

[0096] A counterclockwise rotation of the grinding container 10 upon engagement of the grinding container 10 in the actuating receptacles 57 can cause the drive side 45 to be removed from the output side 43. The counterclockwise rotation of the grinding container 10 can occur upon release of the grinding container 10 from the locking device 65. The counterclockwise rotation of the grinding container 10 can thus cause the contactless magnetic coupling 42 to be separated, whereby the electric drive 40 with the drive side 45 can be removed from the output side 43 and thus separated from it.

[0097] Figure 6 shows the grinding container 10 in a perspective view of the container bottom 15. The grinding container 10 can have a container identifier carrier 11, which can have a container identifier for identifying the grinding container 10. The container identifier carrier 11 can be connected to a spring contact 60, which can be arranged on the container bottom 15.

[0098] Figure 7 shows the grinding container support 9 of the mill body 2 in a perspective view of the locking device 65 for locking the grinding container 10 to the grinding container support 9. Figures 6 and 7 show the spring contact 60, which can have spring contact pins 62 arranged on the grinding container side as shown in Figure 6 and circular contact rails 64 arranged on the mill body side. With the spring contact 60, a wireless

[0099] A data communication section 32 may be formed, which can be established by contacting the spring contact pins 62 with the contact rails 64. The contacting can be established automatically by manually arranging the grinding container 10 on the mill body 2 while locking the grinding container 10 on the locking device 65.

[0100] Via the wireless data communication section 32, operating data of the grinding container 10 and / or the grinding tool 20, which can be detected by the sensor 30 shown in Figure 3, can be communicated from the sensor 30 to the control device 110. The sensor 30 can be configured to detect operating data of the grinding container 10 and / or the grinding tool 20. The operating data can include an operating temperature of the grinding container 10 and / or the grinding tool 20. Alternatively or additionally, the operating data can include a

[0101] Detect the closed state of the grinding container 10 and / or a locking state of the grinding container 10. To detect the locking state, a contact in a locked position of the grinding container 10 on the

[0102] The contact can be arranged on the grinding container support 9. The contact can comprise a spring contact pin 62' arranged on the grinding container side, which can be designed as an end contact 68 on the grinding container side, and a contact rail 64' arranged on the mill body side, which can be designed as an end contact 68 on the mill body side. In the locked position, the end contacts 68 can establish a contact, which can communicate the locked state to the control device 110. The control device 110 can control and enable the grinding operation when the contact is present in the locked state.

[0103] Figure 8a shows the grinding container 10 with the safety locking device 70 according to one embodiment. The safety locking device 70 can be arranged on the grinding container 10. The grinding container 10 is shown in an operating state B of the grinding container 10, which is configured for grinding operation and in which the grinding container 10 is arranged on the mill body 2. In the operating state B configured for grinding operation, the safety locking device 70 is configured to prevent manual movement of the container lid 16 relative to the grinding pot 18. The safety locking device 70 is configured to prevent the container lid 16 from opening.

[0104] The safety locking device 70 can have a locking device 72, which can be arranged on the grinding bowl 18. The locking device 72 can have a movable locking element 74, which can be mounted on the grinding bowl 18. The movable locking element 74 can engage with an active element 78, which can be arranged on the container lid 16 and connected thereto in a rotationally fixed manner. The movable locking element 74 can be designed as a locking pin 75, which can engage with the active element 78. The locking device 72 can have an actuating element 76, which can cause the movable locking element 74 to engage with the active element 78 and thus secure the container lid 16 against rotation.The adjusting element 76 can be designed as a spring 77, which can be configured and arranged on the grinding bowl 18 in such a way that it exerts an adjusting force on the movable locking element 74, which can cause engagement with the active element 78. The spring 77 can preload the movable locking element 74 toward the container lid 16.

[0105] The active element 78 can have a conical region 79, which can abut against the movable locking element 74 when the container lid 16 is rotated relative to the grinding bowl 18. The conical region 79 can cause the movable locking element 74 to initially be moved counter to the actuating force of the actuating element 76 when the container lid 16 is rotated relative to the grinding bowl 18, until the movable locking element 74 engages in a receptacle 80 of the active element 78 for receiving the movable locking element 74.

[0106] The locking device 72 can have an actuating element 82, which can be arranged on the container lid 16. The actuating element 82 can be designed as an actuating pin 83, which can be arranged coaxially with the locking pin 75. The locking device 72 can also have a return element 84, which can be designed as a return spring 85. The return element 84 can be configured and arranged on the container lid 16 to move the actuating element 82 in the direction of the actuating force of the actuating element 76. When the actuating element 82 is actuated in operating state B, it can strike the movable locking element 74, which in turn can strike the mill body 2 shown schematically in Figure 8a. Actuation can take place by manually pressing the section of the actuating element 82 protruding from the container lid 16.Release of the safety locking device 70 is thus mechanically blocked in operating state B. If the grinding container 10 is removed from the mill body 2, actuation of the actuating element 82 can cause it to push the movable locking element 74 out of engagement with the receptacle 80, whereby the safety locking device 70 can be released because the movable locking element 74 no longer engages with the active element 78. The safety locking device 70 can therefore only be released after the grinding container 10 has been removed from the mill body 2.

[0107] Figure 8b shows the grinding container 10 with a safety locking device 70 according to a further embodiment. The grinding container 10 is shown in operating state B of the grinding container 10, which is set up for grinding operation. The safety locking device 70 has a locking device 72, which can be arranged on the grinding bowl 18. The locking device 72 can have a movable locking element 74, which can be mounted on the grinding bowl 18. The movable locking element 74 can engage in an active element 78, which can be arranged on the container lid 16 and connected thereto in a rotationally fixed manner. The movable locking element 74 can have a locking pin 75, which can engage in a recess 73 of the active element 78.The locking device 72 can have an adjusting element 76, which can cause the movable locking element 74 to engage with the active element 78 and thus secure the container lid 16 against rotation of the container lid 16 toward the grinding bowl 18. The adjusting element 76 can be designed as a spring 77, which can be configured and arranged on the grinding bowl 18 such that it exerts an adjusting force on the movable locking element 74, which can bring about engagement with the active element 78. The spring 77 can preload the movable locking element 74 in the direction of the container lid 16.

[0108] The grinding container 10 has a locking device 71, which blocks locking of the grinding container 10 to the locking device 65 when the container lid 16 is not arranged on the grinding pot 18 in the arrangement state A of the container lid 16 on the grinding pot 18 shown in Figure 8b, and closes the latter in this state. In the operating state B of the grinding container 10, which is set up for grinding operation, the locking device 71 engages in the locking device 65 and thus blocks movement of the locking element 74, which could release the engagement of the locking pin 75 in the recess 73. The locking device 71 has a locking element 86, which is rotatably mounted on the grinding pot 18. The locking element 86 is movably connected to the locking pin 75 via an eccentric 87, to which the movable locking element 74 is hinged.If the locking pin 75 engages in the recess 73 when the container lid 16 is locked to the grinding bowl 18 in the arrangement state A, the engagement of the locking pin 75 causes the locking element 86 to rotate into a release position F, in which the locking element 86 is arranged such that it can engage the locking device 65. The rotation is effected via the eccentric 87, which is connected to the locking element 86 in a rotationally fixed manner and centrally to a rotation axis of the locking element 86 and eccentrically connected to the locking pin 75. The locking element 86 can be arranged in the engagement element 12, wherein the locking element 86 can have an element structure which, in the release position F, can be arranged in the contour of the engagement element 12 such that the bayonet lock 66 can be engaged.If the locking pin 75 does not engage the recess 73 when the container lid 16 is not locked to the grinding bowl 18 in the arrangement state A, the active element 78 or the actuating force of the actuating element 76 causes the rotation of the locking element 86 into a locked position, in which the locking element 86 is arranged such that it cannot engage the locking device 65. In the locked position, the element structure can be arranged in the contour of the engagement element 12 such that the bayonet lock 66 cannot engage.

[0109] Figure 9 shows the laboratory mill 100 in a sectional view through the control group 210, which is arranged on the mill body 2. The control group 210 is configured to set a grinding parameter for a grinding operation of the laboratory mill 100. The grinding parameter can be set manually by a user via the control group 210. The control group 210 can have a first user interface 211 and a second user interface 221. The grinding parameter can be set by the user either by actuating the first user interface 211 or the second user interface 221.

[0110] The control panel 210 can include the touchscreen 212, which can be configured as the first user interface 211. The control panel 210 can also include a rotary control 222, which can be configured as the second user interface 221. The grinding parameter can be set by the user by selectively operating the touchscreen 212 or the rotary control 222.

[0111] The rotary actuator 222 can be arranged on the touchscreen 212, wherein the rotary actuator 222 can be arranged on an outer display layer 213 of the touchscreen 212. The rotary actuator 222 can be arranged outside the touch-sensitive area 214 of the touchscreen 212. The rotary actuator 222 can be arranged on a rotary encoder 224 and magnetically coupled thereto. The rotary encoder 224 can be arranged below the outer display layer 213, wherein the rotary actuator 222 can be held on the outer display layer 213 via a contactless magnetic coupling with the rotary encoder 224, which can be designed without a mechanical holder for holding the rotary actuator 222 to the outer display layer 213. The rotary actuator 222 can thus be magnetically held to the outer display layer 213 and can be manually removed from it by the user without leaving any residue. The rotary knob 222 can be turned manually to adjust the grinding parameter.The rotary encoder 224 can be configured to detect the set grinding parameter based on a rotation angle of the rotary actuator 222. The rotary actuator 222 can have actuator-side permanent magnets 223 that can be magnetically coupled to the encoder-side permanent magnets 225. The rotary encoder 224 can be configured to detect rotation of the magnetically coupled permanent magnets 223, 225 caused by manual rotation of the rotary actuator 222 by the user. The rotary encoder 224 can be connected to the control device 110 to communicate the set grinding parameter based on a rotation angle of the rotary actuator 222 to the control device 110.

[0112] The rotary knob 222 can also be pressed manually to adjust and / or set the set grinding parameter. The rotary knob 222 can have a further permanent magnet 226, which can be magnetically coupled to a Hall sensor 226 by pressing the rotary knob 222. The rotary encoder 224 can have the Hall sensor 226, which can be arranged under the display outer layer 213. The rotary knob 222 can be pressed against the spring force of a setting spring 221, which resets the rotary knob 222 after being pressed. The rotary encoder 224 can be configured to detect the set grinding parameter based on a magnetic coupling of the permanent magnet 227 with the Hall sensor 226. The rotary encoder 224 can be connected to the control device 110 in order to communicate the set grinding parameter to the control device 110 based on the magnetic coupling.

[0113] The operating group 210 can include the visual positioning aid 216, which can be formed on the display outer layer 213 by a light source 217 arranged beneath the display outer layer 213. Using the visual positioning aid 216, the rotary actuator 222 can be manually positioned on the display outer layer 213 such that the contactless magnetic coupling of the rotary function of the rotary actuator 222 and the magnetic coupling for the push function of the rotary actuator 222 can be configured. The LED light source 217 can be configured as an LED ring, which visualizes a target position for the contactless magnetic coupling and the magnetic coupling through the translucent display outer layer 213.The visual positioning aid 216 can thus be configured to visualize that an actual position of the rotary actuator 222 and the target position of the rotary actuator 222 on the display outer layer 213, on which the rotary actuator 222 is positioned and configured to set the grinding parameter, match or differ from each other.

[0114] Figure 10 shows a laboratory mill system 300 having two grinding tools 20, 20'. The grinding tools 20, 20' can be arranged in a modular, interchangeable manner on the mill body 2. Figure 10 shows an operating state of the modular laboratory mill system 300, in which one grinding tool 20 of the grinding tools 20', 20' is arranged on the mill body 2. The grinding tool 20 arranged on the mill body 2 can be replaced by the additional grinding tool 20'. The grinding tool 20 arranged on the mill body 2 has the comminution tools 25. The additional grinding tool 20' has a rotationally drivable grinding chamber 27.

[0115] The grinding tool 20 arranged on the mill body 2 can be arranged in the grinding container 10. The additional grinding tool 20' can also be arranged in the grinding container 10 in the operating state not shown in Figure 10, in which the additional grinding tool 20' is arranged on the mill body 2. The grinding tool 20 arranged on the mill body 2 can have the tool identifier 21, and the additional grinding tool 20' can have a further tool identifier 21'. In the respective operating state in which the respective grinding tool 20, 20' is arranged on the mill body 2, the grinding tool 20 and the additional grinding tool 21 can be connected via the contactless magnetic coupling 42 to the drive 40 for driving the respective grinding tool 20, 20'. For this purpose, the respective grinding tool 20, 20' can have the output side 43 of the contactless magnetic coupling 42. The drive 40 is connected to the control device 110 via the drive control 41.The modular laboratory mill system 300 may also include the orientation sensor 34, which can detect the operating orientation of the respective grinding tool 20, 20'.

[0116] Figure 11 shows the laboratory mill 100 in a schematic representation with the control device 110, the grinding container 10, the grinding tool 20, the sensor 30, the electric drive 40, the drive control device 41, the contactless magnetic coupling 42, the spring contact 60, the vibration sensor 90, the operating group 210 and the user interfaces 211, 221.

[0117] The control device 110 can be connected to the drive control device 41 for controlling the electric drive 40 and can be configured to control the drive control device 41 for controlling the electric drive 40 and for driving the grinding tool 20. The electric drive 40 can have the drive side 45 and the output side 43 of the contactless magnetic coupling 42. The electric drive 40 can be configured to drive the grinding tool 20.

[0118] The control device 110 can be connected to the container identifier carrier 11 of the grinding container 10 via the spring contact 60 and can be configured to read the container identifier stored on the container identifier carrier 11 in order to control the electric drive 40 for driving the grinding tool 20 based on the container identifier. The control device 110 can be contactlessly connected to the tool identifier carrier 21 of the grinding tool 20 and can be configured to read the tool identifier stored on the tool identifier carrier 21 in order to control the electric drive 40 for driving the grinding tool 20 based on the tool identifier.

[0119] The control device 110 can be connected to the user group 210 and the user interfaces 211, 221 and configured to control at least one of the user interfaces 211, 221 to output a signal to a user of the laboratory mill 100. The control device 110 can also be connected to the vibration sensor 90 to read in a vibration of the laboratory mill 100 detected by the vibration sensor 90.

[0120] Figure 12 shows a flowchart with method steps for operating the laboratory mill 100 shown in Figure 11 or the laboratory mill system 300 shown in Figure 10. The method steps are shown in a chronological sequence according to one embodiment. The method steps can be carried out by the control device 110. In a step 50a, a grinding container (not shown in the figures) with which the laboratory mill 100 was equipped for holding a grinding material can be manually replaced by the grinding container 10 with which the laboratory mill 100 is equipped for holding the grinding material. The grinding containers can differ in at least one container-specific property.In a further step S1a, the container identifier of the grinding container 10, with which the laboratory mill 100 is equipped for holding the material to be ground, can be read from the container identifier carrier 11 via the spring contact 60. The spring contact 60 can be set up automatically by the user manually positioning the grinding container 10 on the mill body 2.

[0121] In a further step S2a, the container identifier of the grinding container 10, with which the laboratory mill 100 is equipped for holding a material to be ground, can be read by the control device 110. The container identifier can have identification data that can identify a container type of the grinding container 10, which can indicate a grinding container configured for continuous grinding operation or a grinding container configured for discontinuous grinding operation.

[0122] In a step S1b, a grinding tool (not shown in the figures) with which the laboratory mill 100 was equipped for comminuting the material to be ground can be manually replaced by a user of the laboratory mill 100 with the grinding tool 20 with which the laboratory mill 100 is equipped for comminuting the material to be ground. The grinding tools can differ in at least one tool-specific property. In a further step S1b, the tool identifier of the grinding tool 20 with which the laboratory mill 100 is equipped for comminuting the material to be ground can be read contactlessly from the tool identifier carrier 21 by the RFID reader 17 shown in Figure 5, which can be embodied as the RFID transponder 23 shown in Figure 3.

[0123] In a further step S2b, the tool identifier of the grinding tool 20 with which the laboratory mill 100 is equipped for comminuting the material to be ground can be read by the control device 110. The tool identifier can include identification data that identify a tool type of the grinding tool 20, which can be one of a rotor tool, a cutting tool, a knife tool, a disc tool, and a ball tool.

[0124] In an optional further step S2c, an operating orientation of the grinding container 10, in which the grinding container 10 is oriented relative to a mill body 2, can be read by the control device 110. The operating orientation can be detected with the orientation sensor 34 shown in Figure 2, wherein the operating orientation can include the pivot angle of the grinding container carrier 9 relative to the mill body 2.

[0125] In a further step S3, at least one control parameter for controlling the electric drive 40 can be selected by the control device 110 depending on the read-in container identifier and the read-in tool identifier. The control parameter can additionally be selected depending on the operating orientation. The control parameter can be selected for controlling an output speed of the electric drive 40 depending on the read-in container identifier and / or the read-in tool identifier. Alternatively or additionally, the control parameter for controlling an output rotational direction of the electric drive 40 can be selected depending on the read-in container identifier and / or the read-in tool identifier.

[0126] In a further step S4, the selected control parameter can be output to the drive control device 41 for controlling the electric drive 40. The control parameter can be output to control an operating speed of the grinding tool 20. Alternatively or additionally, the control parameter can be output to the drive control device 41 to control an operating direction of the grinding tool 20. In yet a further step S5, the electric drive 40 can be controlled by the control device 110 based on the control parameter in order to control the grinding operation of the laboratory mill 100 based on the control parameter.

[0127] Figure 13 shows a flow chart with process steps for operating the device shown in Figure

[0128] 11 or the laboratory mill system 300 shown in Figure 10. The method steps are shown in a chronological sequence according to one embodiment. The method steps can be performed by the control device 110.

[0129] In a step VO, a vibration amplitude and / or a vibration period of a vibration of the laboratory mill 100 can be detected using the vibration sensor 90 arranged on the mill body 2. In a further step, the vibration amplitude and / or vibration period detected by the vibration sensor 90 can be read into the control device 110.

[0130] In a step V1, a vibration behavior of the laboratory mill 100 during a grinding operation can be determined. The step of determining V1 of the vibration behavior can be performed when the grinding tool 20 in the grinding container 10 is rotationally driven by the electric drive 40 during the grinding operation. The vibration behavior can be determined based on the detected vibration amplitude and / or vibration period duration.

[0131] In a further step V2, a limit value for the vibration behavior of the laboratory mill 100 during grinding operation can be read in by the control device 110. The limit value can be provided by an information carrier 24 shown in Figure 3, which can be arranged on the grinding tool 20. Alternatively, the information carrier 24 can be arranged on the grinding container 10. The limit value can be a limit value for the vibration amplitude and / or the vibration period duration.

[0132] In a further step V3, it can be checked whether the determined vibration behavior exhibits a critical vibration state for the grinding operation, wherein it can be checked whether the determined vibration behavior exceeds the read-in limit value. In step V3, it can be checked whether the detected vibration amplitude and / or vibration period exceeds a critical vibration amplitude and / or vibration period. In step V3, the test result can be determined that the determined vibration behavior exhibits the critical vibration state for the grinding operation if the detected vibration amplitude and / or vibration period exceeds the read-in limit value for the vibration amplitude and / or vibration period.Alternatively, in step V3, it can be determined as a test result that the determined vibration behavior does not have the critical vibration state for the grinding operation if the detected vibration amplitude and / or vibration period does not exceed the read limit value for the vibration amplitude and / or vibration period.

[0133] In a further step V4, a technical intervention in the operation of the laboratory mill 100 can be determined based on a test result resulting from the testing step. In step V4, the technical intervention can be determined if the test result in step V3 determined that the determined vibration behavior has the critical vibration state for the grinding operation. The specified technical intervention can be maintenance, repair, or replacement of the grinding tool 20 and / or the grinding container 10, which is necessary to continue the grinding operation. The maintenance can be maintenance of the ball bearing 26 shown in Figure 3. The repair can be balancing the grinding tool 20. The replacement can be replacement of the ball bearing 26 shown in Figure 3 and / or a comminution tool 25 shown in Figure 3.

[0134] In a further step V5, a signal can be output to a user of the laboratory mill 100 via the user interface 211 of the operating group 210, wherein the signal comprises visual technical information that visually communicates to the user that the specified technical intervention in the operation of the laboratory mill 100 is required. The signal can comprise visual information that visually communicates to the user that the maintenance, repair, or replacement of the grinding tool 20 and / or the grinding container 10 is required. Reference symbol

[0135] Power supply

[0136] Mill body

[0137] Housing

[0138] Housing component

[0139] Addition opening

[0140] Dispensing opening

[0141] swivel joint

[0142] Swivel axis

[0143] Grinding container carrier

[0144] Grinding container

[0145] Container identifier carrier

[0146] engagement element

[0147] base plate

[0148] Floor area

[0149] Container bottom

[0150] Container lid

[0151] RFID reader

[0152] grinding pot

[0153] Grinding sieve, 20' Grinding tool, 21 1 Tool identifier carrier

[0154] axis

[0155] RFID transponder

[0156] Information carrier

[0157] Shredding tool

[0158] ball bearings

[0159] Axle mount

[0160] Grinding room

[0161] Sensor wireless data communication section

[0162] Orientation sensor electric drive drive control device contactless magnetic coupling output side

[0163] Permanent magnet pair ' permanent magnet

[0164] Drive side

[0165] rotor

[0166] electric motor

[0167] stator

[0168] Adjusting mechanism

[0169] Actuator

[0170] actuator

[0171] guide rail

[0172] guide groove

[0173] Actuator

[0174] Actuation mount

[0175] Spring contact, 62' spring contact pin, 64' contact rail

[0176] locking device

[0177] bayonet lock

[0178] End contact

[0179] Safety interlock

[0180] locking device

[0181] Locking device

[0182] recess

[0183] Locking element

[0184] locking pin

[0185] Actuator

[0186] Feather

[0187] Active element conical area

[0188] Recording

[0189] Actuating element 83 Actuating pin

[0190] 84 Reset element

[0191] 85 Return spring

[0192] 86 locking element

[0193] 87 eccentric

[0194] 90 Vibration sensor

[0195] 100 laboratory mill

[0196] 110 Control device

[0197] 210 Operating group

[0198] 211 , 221 User interface

[0199] 212 touchscreen

[0200] 213 Display outer layer

[0201] 214 touch-sensitive area

[0202] 216 Positioning aid

[0203] 217 lamps

[0204] 221 Adjusting spring

[0205] 222 rotary actuators

[0206] 223 actuator-side permanent magnets

[0207] 224 rotary encoders

[0208] 225 encoder-side permanent magnets

[0209] 226 Hall sensors

[0210] 227 Permanent magnet

[0211] 300 laboratory mill system

[0212] A arrangement state

[0213] B Operating state

[0214] F Release position

[0215] SOa Replace grinding container

[0216] SOb Replace grinding tool

[0217] S1a Read container identifier

[0218] S1b Read tool identifier

[0219] S2a Reading container identifier

[0220] S2b Reading tool identifier

[0221] S2c Reading Operational Orientation

[0222] S3 Select control parameters 54 Output control parameters

[0223] 55 Controlling electric drive

[0224] VO Detecting Vibration

[0225] V1 Determine vibration behavior

[0226] V2 Read limit value

[0227] V3 Check vibration behavior

[0228] V4 Determine technical intervention

[0229] V5 Output Signal

Claims

Patent claims 1. A method for operating a laboratory mill (100), comprising the steps: Reading (S2a) a container identifier of a grinding container (10) with which the laboratory mill (100) is equipped for holding a grinding material, Reading (S2b) a tool identifier of a grinding tool (20) with which the laboratory mill (100) is equipped for comminuting the material to be ground, Selecting (S3) at least one control parameter for controlling (S5) a drive (40) which is configured to drive the grinding tool (20), wherein the step of selecting (S3) is carried out as a function of the read-in container identifier and the read-in tool identifier, and Outputting (S4) the selected at least one control parameter to a drive control device (41) for controlling (S5) the drive (40).

2. Method according to claim 1, with the further step of exchanging (SOa) a grinding container with which the laboratory mill (100) is equipped for holding a material to be ground, by the grinding container (10) with which the laboratory mill (100) is equipped, wherein the grinding containers differ in at least one container-specific property.

3. Method according to claim 1 or 2, with the further step of exchanging (SOb) a grinding tool with which the laboratory mill (100) is equipped for comminuting a material to be ground, by the grinding tool (20) with which the laboratory mill (100) is equipped, wherein the grinding tools differ in at least one tool-specific property.

4. Method according to one of the preceding claims, with the further step of reading (S1a) the container identifier from a container identifier carrier (11) which the grinding container (10) has, with which the laboratory mill (100) is equipped for holding the material to be ground.

5. The method according to claim 4, wherein in the step of reading (S1a) the container identifier, the container identifier is read out via a contact which is set up automatically by manually arranging the grinding container (10) on a mill body (2).

6. The method according to claim 5, wherein the contact is a spring contact (60) which is set up automatically by manually attaching the grinding container (10) to the mill body (2).

7. The method according to any one of the preceding claims, wherein in the step of reading (S2a) the container identifier, the container identifier comprises identification data which identify a container type of the grinding container (10), which indicates one of a grinding container set up for a continuous grinding operation or a grinding container set up for a discontinuous grinding operation.

8. Method according to one of the preceding claims, with the further step of reading in (S2c) an operating orientation of the grinding container (10) in which the grinding container (10) is oriented relative to a mill body (2) for a grinding operation, wherein the step of selecting (S2) is carried out as a function of the read-in operating orientation.

9. Method according to one of the preceding claims, with the further step of contactless reading (S1 b) of the tool identifier from a tool identifier carrier (21) which is provided with the grinding tool (20) with which the laboratory mill (100) is equipped for comminuting the material to be ground.

10. The method according to claim 9, wherein the tool identifier carrier (21) is an RFID transponder (23) which holds the tool identifier, and wherein in the step of contactless reading (S1a) of the tool identifier, the tool identifier is read from the RFID transponder (23) by an RFID reader (17).

11. Method according to one of the preceding claims, wherein in the step of reading (S2b) the tool identifier, the tool identifier comprises identification data which identifies a tool type of the grinding tool (20), which indicates one of a rotor tool, a cutting tool, a knife tool, a disc tool and a ball tool.

12. Method according to one of the preceding claims, wherein in the step of selecting (S3) the at least one control parameter, a control parameter for controlling an output speed of the drive (40) is selected as a function of the read-in container identifier and / or the read-in tool identifier, and wherein the step of outputting (S4) the selected at least one control parameter to the drive control device (41) is carried out to bring about an operating speed of the grinding tool (20).

13. The method according to any one of the preceding claims, wherein in the step of selecting (S3) the at least one control parameter, a control parameter for controlling an output rotational direction of the drive (40) is selected as a function of the read-in container identifier and / or the read-in tool identifier, and wherein the step of outputting (S4) the selected at least one control parameter to the drive control device (41) is carried out to bring about an operating direction of the grinding tool (20).

14. Modular laboratory mill system (300) for comminuting material to be ground, comprising a mill body (2), at least two grinding tools (20, 20'), which can be arranged in a modular, exchangeable manner on the mill body (2), wherein one grinding tool (20) of the grinding tools (20, 20') has a rotationally driven comminution tool (25) which is designed to comminute the material to be ground, and wherein a further grinding tool (20') of the grinding tools (20, 20') has a rotationally driven drivable grinding chamber (28) which is designed to hold the material to be ground, and a drive (40) which is designed to transmit a torque to the grinding tools (20, 20') for comminuting the material to be ground, wherein the laboratory mill system (300) is operable in an operating state in which the one grinding tool (20) is arranged on the mill body (2) and is operable in a further operating state in which the further grinding tool (20') is arranged on the mill body (2).

15. Modular laboratory mill system (300) according to claim 14, comprising a control device (110) for controlling the drive (40), wherein the control device (110) is configured to control the drive (40) such that the torque and / or a rotational speed is transmitted to the comminution tool (25) or the grinding chamber (28) based on the presence of one of the operating states.

16. Modular laboratory mill system (300) according to claim 15, wherein the control device (110) is configured to control the drive (40) such that the rotational speed is transmitted to the comminution tool (25) or the grinding chamber (28) in a time-varying manner based on the presence of one of the operating states.

17. Modular laboratory mill system (300) according to one of claims 14 to 16, wherein the grinding tools (20, 20') are pivotably arranged on the mill body (2) in at least one of the operating states.

18. Modular laboratory mill system (300) according to one of claims 14 to 17, wherein the grinding tools (20, 20') are operable in one operating orientation, in particular in a horizontal operating orientation, in a discontinuous grinding operation, and wherein the grinding tools (20, 20') are operable in a further operating orientation, in particular in a vertical operating orientation, in a continuous grinding operation.

19. Modular laboratory mill system (300) according to one of claims 14 to 18, wherein the further grinding tool (20'), which has the rotationally drivable grinding chamber (28), is designed as a ball tool.

20. Modular laboratory mill system according to one of claims 14 to 19, wherein the grinding tool (20) comprising the rotationally drivable comminution tool (25) is designed as at least one of a rotor tool, a disc tool, a cutting tool, a mortar tool, a crushing tool, an impact tool and a knife tool.

21. A method for operating a modular laboratory mill system (300) according to any one of claims 14 to 20, comprising the steps: Reading (S2b) a tool identifier based on the presence of one of the operating states, Selecting (S3) at least one control parameter for controlling (S5) the drive (40) of the modular laboratory mill system (300), wherein the step of selecting (S3) is carried out as a function of the read-in tool identifier, and outputting (S4) the selected at least one control parameter to a drive control device (41) for controlling the drive (40).

22. Method according to claim 21, with the further step of reading in (S2c) an operating orientation of the grinding tool (20, 20') arranged on the mill body (2), which grinding tool is pivotably arranged on the mill body (2), wherein the step of selecting (S2) is carried out as a function of the read-in operating orientation.

23. Method according to claim 21 or 22, with the further step of contactless reading (S1 b) of the tool identifier from a tool identifier carrier (21) which the grinding tool (20, 20') arranged on the mill body (2) has.

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