Drive module and linear transport system

Patent metadata

Field	Value
Publication number	US-11021335-B2
Application number	US-201916657594-A
Country	US
Kind code	B2
Filing date	Oct 18, 2019
Priority date	Apr 21, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A drive module for a linear transport system comprises a housing and a stator, wherein a conveying device of the linear transport system with a magnet arrangement can be arranged on the housing. The stator is arranged in the housing, wherein the stator comprises at least one coil arrangement having at least one coil with at least one stator tooth. The coil arrangement is designed to switchably provide a magnetic traveling field, wherein the magnetic traveling field exits from the coil arrangement at the end faces and passes through the housing shells in order to enter into operative connection with the magnet arrangement of the conveying device of the linear transport system on the outer side of the housing for the purpose of forming a magnetic coupling.

First claim

What is claimed is:

1. A drive module for a linear transport system,
having a housing and a stator,
wherein a conveying device of the linear transport system with a magnet arrangement can be arranged on the housing,
wherein the housing comprises a first housing shell and a second housing shell,
wherein the first housing shell and the second housing shell together delimit a first housing interior,
wherein the stator is arranged in the first housing interior,
wherein the stator comprises at least one coil arrangement having at least one coil with at least one stator tooth,
wherein the coil arrangement is designed to switchably provide a magnetic traveling field,
wherein the stator tooth has a first end face and a second end face which is arranged opposite the first end face,
wherein the first end face is arranged on an inner side of the first housing shell and the second end face is arranged on an inner side of the second housing shell,
wherein the housing shells cover the stator tooth in relation to a surrounding area, and
wherein the magnetic traveling field exits from the coil arrangement at the end faces and passes through the housing shells in order to enter into operative connection with the magnet arrangement of the conveying device of the linear transport system on an outer side of the housing for the purpose of forming a magnetic coupling.

2. The drive module as claimed in claim 1 ,
wherein the first housing shell has a first outer side and the second housing shell has a second outer side,
wherein the first outer side and/or the second outer side are of substantially smooth design,
wherein the housing has a mean roughness value on the outer side, and
wherein the mean roughness value lies in a range of 0.2 μm to 0.8 μm, in particular in a range of 0.4 μm to 0.8 μm.

3. The drive module as claimed in claim 1 ,
wherein the first housing shell has a first outer side and the second housing shell has a second outer side,
wherein the first outer side is arranged in the region of the coil arrangement, and
wherein the first outer side is of substantially planar design.

4. The drive module as claimed in claim 1 ,
wherein the first housing shell has a first outer side and the second housing shell has a second outer side,
wherein the first housing shell has a first coil receptacle,
wherein the first coil receptacle has a first coil receptacle base,
wherein the first coil receptacle base is arranged between the first outer side and the first end side of the stator tooth and separates the first housing interior from the surrounding area,
wherein the first coil receptacle is designed at least in sections in a manner corresponding to the coil, in particular to the stator tooth,
wherein the coil, in particular the stator tooth, engages into the first coil receptacle and bears against the first coil receptacle base by way of the first end face,
wherein the second housing shell has a second coil receptacle which is arranged opposite the first coil receptacle,
wherein the second coil receptacle has a second coil receptacle base,
wherein the second coil receptacle base is arranged between the second outer side and the second end side of the stator tooth and separates the first housing interior from the surrounding area,
wherein the second coil receptacle is designed at least in sections so as to correspond to the stator tooth of the coil, and
wherein the coil, in particular the stator tooth, engages into the second coil receptacle and bears against the second coil receptacle base by way of the second end face.

5. The drive module as claimed in claim 4 ,
wherein at least one of the two coil receptacles has a coil receptacle side face and a coil receptacle opening, and
wherein the coil receptacle side face is designed at least in sections so as to taper from the coil receptacle opening toward the coil receptacle base.

6. The drive module as claimed in claim 5 , wherein the first coil receptacle and the second coil receptacle are in each case provided for each coil, in particular for each stator tooth.

7. The drive module as claimed in claim 4 ,
wherein the coil comprises a winding around the stator tooth and an electrical insulation,
wherein the insulation is of plate-like design and has at least one first cutout,
wherein the first cutout is designed so as to correspond to the stator tooth,
wherein the stator tooth passes through the first cutout, and
wherein the insulation is arranged at least between one of the two housing shells and the winding and the winding is electrically insulated from the housing.

8. The drive module as claimed in claim 1 ,
having a sensor unit for ascertaining a position of the conveying device on the drive module,
wherein the first housing shell, on a side averted from the first housing interior, delimits a second housing interior at least in sections, and
wherein the sensor unit is arranged in the second housing interior.

9. The drive module as claimed in claim 8 ,
wherein the housing comprises a covering element and the sensor unit comprises a sensor,
wherein the covering element is arranged on a first outer side of the first housing shell and closes the second housing interior in relation to the surrounding area,
wherein the sensor is arranged so as to adjoin the covering element,
wherein the covering element is of film-like design, and
wherein the covering element is surface-to-surface bonded to the first outer side.

10. The drive module as claimed in claim 1 ,
wherein the first housing interior is filled with a potting compound,
wherein the potting compound is of thermally conductive design in order to dissipate heat from the stator and to cool the stator, and
wherein the potting compound has a plastic, in particular a thermoset plastic, in particular polyurethane.

11. The drive module as claimed in claim 1 ,
wherein the housing has an at least one first connecting profile and one second connecting profile for positioning the second housing shell relative to the first housing shell,
wherein the first connecting profile is arranged on one housing shell and the second connecting profile is arranged on the other housing shell,
wherein the first connecting profile has at least one protrusion and the second connecting profile has a receptacle which is designed so as to correspond to the protrusion,
wherein the protrusion extends in the direction of the other housing shell, and
wherein the protrusion engages into the receptacle and defines a position of the second housing shell relative to the first housing shell at least in a first direction.

12. The drive module as claimed in claim 11 ,
wherein the first connecting profile has at least one further protrusion and the second connecting profile has a further receptacle which is designed so as to correspond to the further protrusion,
wherein the further protrusion is arranged on one housing shell and the further receptacle is arranged on the other housing shell,
wherein the further protrusion extends in the direction of the other housing shell,
wherein the protrusion and the further protrusion are designed differently from one another,
wherein the receptacle and the further receptacle are designed differently from one another,
wherein the receptacle and the protrusion are arranged on a housing side section of the housing,
wherein the further receptacle and the further protrusion are arranged on a further housing side section of the housing,
wherein the housing side section and the further housing side section adjoin one another, and
wherein the further protrusion engages into the further receptacle and defines a position

Assignees

• Beckhoff Automation Gmbh

Inventors

• Sinzenich Andreas
• Vorbohle Thomas
• Prüssmeier Uwe

Classifications

• B65G54/02 Primary

  electrostatic, electric, or magnetic · CPC title

• B65G2207/26

  Hygienic features, e.g. easy to sanitize · CPC title

• H02K41/031

  of the permanent magnet type · CPC title

• B65G45/00

  Lubricating, cleaning, or clearing devices · CPC title

• H02K5/04

  Casings or enclosures characterised by the shape, form or construction thereof · CPC title