Transport device

Abstract

In order to provide a transport device (1) in the form of a planar motor, the transport device has at least one transport section (2) constituting a transport layer (3) and at least one transport unit capable of at least two-dimensional movement in the transport layer (3), different pole pitches are set for at least one first magnet group (MGa) and at least one second magnet group (MGb) on the transport unit, and the transport device can achieve efficient operation, it is stipulated that: the drive coil (AS1) of the first coil group (SG1) of the transport section (2) is spaced apart from the first magnet group (MGa) of the transport unit by a first average coil spacing in the normal direction on the transport layer (3), and the drive coil (AS2) of the second coil group (SG2) is spaced apart from the second magnet group (MGb) of the transport unit by a second average coil spacing in the normal direction on the transport layer (3) that is larger than the first average coil spacing, and the pole pitch of the first magnet group (MGa) on the transport unit is smaller than the pole pitch of the second magnet group (MGb).

Claims

1. A transport device (1) in the form of a planar motor, the transport device having at least one transport section (2) forming a transport layer (3) and at least one transport unit (TE1.1) capable of at least two-dimensional movement in the transport layer (3), a plurality of drive coils (AS1, AS2) being arranged on the transport section (2), and at least one first magnet group (MGa) and at least one second magnet group (MGb) being arranged on the transport unit (TE1.1), the first magnet group and the second magnet group each having a plurality of drive magnets (4), the drive magnets being arranged successively along a certain arrangement direction at a certain pole pitch (Ta, Tb) and having different magnetization directions, the at least one first magnet group being arranged on the at least one transport unit (TE1.1) The magnet group (MGa) and the at least one second magnet group (MGb) are provided with different pole pitches (Ta≠Tb), and a first coil group (SG1) having a plurality of drive coils (AS1) and a second coil group (SG2) having a plurality of drive coils (AS2) are arranged on the transport section (2), the first coil group defining a first main movement direction (H1) for moving the transport unit (TE1.1), the second coil group defining a second main movement direction (H2) for moving the transport unit (TE1.1), the drive coils (AS1) of the first coil group (SG1) being spaced apart from the first magnet group (MGa) of the transport unit (TE1.1) by a first average coil spacing (S1) in the normal direction on the transport layer (3), characterized in that: The drive coils (AS2) of the second coil group (SG2) are spaced apart from the second magnet group (MGb) of the transport unit (TE1.1) in a normal direction on the transport layer (3) at a second average coil spacing (S2) that is larger than the first average coil spacing (S1), and the pole pitch (Ta) of the at least one first magnet group (MGa) on the transport unit (TE1.1) is smaller than the pole pitch (Tb) of the at least one second magnet group (MGb).

2. The transport device (1) according to claim 1, characterized in that At least two transport units (TE1.2, TE2) are provided in a transport device (1), at least one first magnet group (MGa) and at least one second magnet group (MGb) are respectively arranged on the at least two transport units, the first magnet group and the second magnet group each having a plurality of drive magnets (4), the drive magnets being arranged successively in a certain arrangement direction and at a certain pole pitch (Ta, Tb) and having different magnetization directions, all magnet groups (MGa, MGb) of each transport unit (TE1.2, TE2) having the same pole pitch (Ta=Tb), while the pole pitches (Ta, Tb) of the at least two transport units (TE1.2, TE2) are different.

3. The transport device (1) according to claim 2, characterized in that The driving coil (AS1) of the first coil group (SG1) is spaced apart from the first magnet group (MGa) of the transport unit (TE1.2, TE2) at a first average coil spacing (S1) in the normal direction on the transport layer (3), and the driving coil (AS2) of the second coil group (SG2) is spaced apart from the second magnet group (MGb) of the transport unit (TE1.2, TE2) at a second average coil spacing (S2) larger than the first average coil spacing (S1) in the normal direction on the transport layer (T3), and a first movement path (BP1) is determined in the transport layer (3) for the transport unit (TE1.2) having a smaller pole pitch (Ta, Tb), and the transport unit (TE1.2) can move along the first movement path and 3) a second movement path (BP2) is determined for at least one other transport unit (TE2) having a larger pole pitch (Ta, Tb), the transport unit (TE2) being movable along the second movement path, wherein, over a movement path length (LBP1) of the first movement path (BP1), a component of the first main movement direction (H1) is greater than a component of the second main movement direction (H2), and over a movement path length (LBP2) of the second movement path (BP2), a component of the first main movement direction (H1) is less than a component of the second main movement direction (H2).

4. The transport device (1) according to any one of claims 1 to 3, characterized in that The pole pitch (Ta, Tb) of the drive magnets (4) of at least one magnet group (MGa, MGb) of at least one transport unit (TE1.1) is determined as a function of the average coil spacing (S1, S2) of the drive coils (AS1, AS2) cooperating with the magnet group.

5. The transport device (1) according to any one of claims 1 to 3, characterized in that The magnet width (MBi) of the drive magnets (4) of at least one magnet group (MGa, Mgb) of at least one transport unit (TE1.1) and / or the magnet height (MHi) in the normal direction on the transport layer (3) is determined as a function of the pole pitch (Ta, Tb) of the corresponding magnet group (MGa, Mgb).

6. The transport device (1) according to any one of claims 1 to 3, characterized in that The magnet groups (MGa, Mgb) of at least one transport unit (TE1.1) have magnet group areas of equal size (AMGa=AMGb) and / or drive magnets (4) with equal numbers of magnets (NMa=NMb) and / or the at least one transport unit (TE) has a square or rectangular transport unit base area.

7. The transport device (1) according to any one of claims 1 to 3, characterized in that The drive magnets (4) of at least one magnet group (MGa, MGb) of at least one transport unit (TE1.1) each have a magnet width (MBi) of the same magnitude, adjacent drive magnets (4) of the magnet group (MGa, MGb) directly adjoining one another.

8. A transport unit (TE1.1) for a transport device (1) in the form of a planar motor according to any one of claims 1 to 7, wherein at least two magnet groups (MGa, MGb) are arranged on the transport unit, each of the at least two magnet groups comprising a plurality of drive magnets (4), the drive magnets being arranged one after the other along a defined arrangement direction with a defined pole pitch (Ta, Tb) and having different magnetization directions, the pole pitches (Ta, Tb) of the at least two magnet groups (MGa, MGb) being different, characterized in that: The magnet width (MBi) and / or the magnet height (MHi) in the normal direction on the bottom side of the transport unit of the drive magnets (4) of at least one magnet group (MGa, MGb) is determined as a function of the pole pitch (Ta, Tb) of the corresponding magnet group (MGa, MGb).

9. The transport unit (TE1.1) according to claim 8, characterized in that The drive magnets (4) of at least one magnet group (MGa, MGb) each have a magnet width (MBi) of the same size, and adjacent drive magnets (4) of the magnet group (MGa, MGb) directly adjoin one another.

10. Transport unit (TE1.1) according to claim 8 or 9, characterized in that The at least two magnet groups (MGa, Mgb) have magnet group areas of equal size (AMGa=AMGb) and / or drive magnets (4) having the same number of magnets (NMa=NMb) and / or the transport unit (TE1.1) has a square or rectangular transport unit base area.

11. A method for operating a transport device (1) in the form of a planar motor, the transport device having at least one transport section (2) forming a transport layer (3) and at least one transport unit (TE1.1) moving at least two-dimensionally in the transport layer (3), a plurality of drive coils (AS1, AS2) being arranged on the transport section (2), and at least one first magnet group (MGa) and at least one second magnet group (MGb) being arranged on the transport unit (TE), the first magnet group and the second magnet group each having a plurality of drive magnets (4), the drive magnets being arranged successively along a certain arrangement direction at a certain pole pitch (Ta, Tb) and having different magnetization directions, the at least one first magnet group being arranged on the at least one transport unit (TE1.1). The magnet group (MGa) and the at least one second magnet group (MGb) are provided with different pole pitches (Ta≠Tb), and a first coil group (SG1) having a plurality of drive coils (AS1) and a second coil group (SG2) having a plurality of drive coils (AS2) are arranged on the transport section (2), the first coil group defining a first main movement direction (H1) for moving the transport unit (TE1.1), the second coil group defining a second main movement direction (H2) for moving the transport unit (TE1.1), the drive coils (AS1) of the first coil group (SG1) being spaced apart from the first magnet group (MGa) of the transport unit (TE1.1) by a first average coil spacing (S1) in the normal direction on the transport layer (3), characterized in that: The drive coils (AS2) of the second coil group (SG2) are spaced apart from the second magnet group (MGb) of the transport unit (TE1.1) in a normal direction on the transport layer (3) at a second average coil spacing (S2) that is larger than the first average coil spacing (S1); and on at least one transport unit (TE1.1), the pole pitch (Ta) of the at least one first magnet group (MGa) is smaller than the pole pitch (Tb) of the at least one second magnet group (MGb).

12. The method according to claim 11, characterized in that At least two transport units (TE1.2, TE2) are moved on a transport layer (3) of a transport device (1), at least one first magnet group (MGa) and at least one second magnet group (MGb) are respectively arranged on the at least two transport units, the first magnet group and the second magnet group each having a plurality of drive magnets (4), the drive magnets being arranged successively in a certain arrangement direction at a certain pole pitch (Ta, Tb) and having different magnetization directions, the same pole pitch (Ta=Tb) being set for all magnet groups (MGa, MGb) of each transport unit (TE1.2, TE2), and the pole pitches (Ta, Tb) of the at least two transport units (TE1.2, TE2) being different.

13. The method according to claim 12, characterized in that The driving coils (AS1) of the first coil group (SG1) are spaced apart from the first magnet group (MGa) of the transport unit (TE1.2, TE2) at a first average coil spacing (S1) in the normal direction on the transport layer (3), while the driving coils (AS2) of the second coil group (SG2) are spaced apart from the second magnet group (MGb) of the transport unit (TE1.2, TE2) at a second average coil spacing (S2) larger than the first average coil spacing (S1) in the normal direction on the transport layer (3), and the transport unit (TE1.2) with the smaller pole pitch (Ta, Tb) moves along the determined first motion path (BP1). The invention relates to a transport layer (3) in which a first main motion direction (H1) moves, while at least one other transport unit (TE2) having a larger pole pitch (Ta, Tb) moves in the transport layer (3) along a determined second motion path (BP2), the motion paths (BP1, BP2) being determined such that, over a motion path length (LBP1) of the first motion path (BP1), a component of the first main motion direction (H1) is greater than a component of the second main motion direction (H2), and over a motion path length (LBP2) of the second motion path (BP2), a component of the first main motion direction (H1) is less than a component of the second main motion direction (H2).

14. The method according to any one of claims 11 to 13, characterized in that The pole pitch (Ta, Tb) of the drive magnets (4) of at least one magnet group (MGa, MGb) of at least one transport unit (TE1.1) is determined as a function of the average coil spacing (S1, S2) of the drive coils (AS1, AS2) cooperating with the magnet group.

15. The method according to any one of claims 11 to 13, characterized in that The magnet width (MBi) and / or the magnet height (MHi) in the normal direction on the transport layer (3) of the drive magnets (4) of at least one magnet group (MGa, MGb) of at least one transport unit (TE1.1) are determined as a function of the pole pitch (Ta, Tb) of the corresponding magnet group (MGa, MGb).

16. The method according to any one of claims 11 to 13, characterized in that The at least two magnet groups (MGa, Mgb) of at least one transport unit (TE1.1) are provided with drive magnets (4) of the same size of magnet group area (AMGa=AMGb) and / or the same number of magnets (NMa=NMb) and / or a square or rectangular transport unit base surface is provided for the at least one transport unit (TE1.1).

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