Conveyor system for a linear transport system and linear transport system

Abstract

The invention relates to a conveying device (20) for transporting goods, a linear transport system (10), and a method for operating the linear transport system (10), wherein the conveying device (20) comprises a roller assembly (90) with at least one first roller (125) and a second roller (130) arranged offset from the first roller (125), a support unit (95) with a first support (115) and a second support (120), a first magnet arrangement (100), a second magnet arrangement (105), and a guide (110), wherein the first roller (125) is rotatably mounted on the first support (115) about a first axis of rotation (140), and the first magnet arrangement (100) is attached to the first support (115), wherein the second roller (130) is rotatably mounted on the second support (120) about a second axis of rotation (160) spaced apart from the first roller (125).wherein the second magnet arrangement (105) is attached to the second support (120) at a distance from the first magnet arrangement (100), wherein the guide (110) connects the first support (115) to the second support (120) slidably along a sliding axis (250), wherein the sliding axis (250) is inclined at an angle (α) to the second axis of rotation (160) such that when the first support (115) and the second support (120) are displaced relative to each other, the distance (1) between the rollers of the first axis of rotation (140) and the second axis of rotation (160) can be changed.

Description

[0001] The invention relates to a conveying device for transporting goods, a linear transport system with the conveying device and a method for operating the linear transport system.

[0002] From EP 3 476 773 A1, a conveyor device with a carriage and a guide rail is known. The carriage has a plurality of rollers in a roller assembly and a pressure device. The pressure device is connected to one of the rollers, and the other rollers are arranged on the guide rail opposite the roller connected to the pressure device. The pressure device has a spring assembly that presses the roller opposite the other rollers against the guide rail.

[0003] The spring assembly in EP 3 476 773 A1 is designed to ensure reliable contact between the rollers and the guide rail. However, as the rollers wear, the spring tension of the assembly decreases, resulting in weaker contact between the rollers and the guide rail. This can lead to unwanted play in the conveyor system on the guide rail. Furthermore, the conveyor system with this spring assembly is complex and difficult to assemble.

[0004] From EP 3 028 965 A1, a conveying device for transporting products is known. The conveying device comprises a plurality of individually movable carriages for receiving the products and a guide rail on which the carriages are guided. A linear motor drive unit serves to drive the carriages, each carriage having permanent magnets that are operatively connected to coils of the linear motor drive unit. Each carriage has a horseshoe-shaped or U-shaped base support with two legs that surround the guide rail on opposite sides. The base support is divided into at least two interconnected sections, each of which comprises one leg. The sections are movable relative to each other, thus allowing the opening width between the legs to be adjusted.

[0005] From DE 10 2017 108 572 A1, a linear transport system for conveying an object is known, wherein the linear transport system comprises a stationary guide rail and a movable conveying device, wherein the conveying device comprises a first guide unit with a first roller, a second roller and a first turntable, wherein the first roller and the second roller are rotatably mounted on the first turntable and bear against the guide rail, wherein the guide rail has a longitudinal axis extending in the longitudinal direction, wherein the first turntable is rotatably mounted about a turntable axis, wherein the turntable axis is inclined, in particular perpendicular, to the longitudinal axis of the rail.

[0006] From DE 10 2021 107 189 A1 a transport system for transporting objects along a transport route is known, wherein the transport route is formed from at least a first transport route section and at least a second transport route section, wherein the transport system comprises at least one stationary running rail and at least one runner movable along the running rail for transporting the objects along the transport route.

[0007] The object of the invention is to provide a simply constructed conveying device for a linear transport system, a backlash-free linear transport system over its lifetime, and an improved method for operating the linear transport system.

[0008] This problem is solved by means of a conveying device according to claim 1, by means of a linear transport system according to claim 11, and by means of a method for operating the linear transport system according to claim 12. Advantageous embodiments are specified in the dependent claims.

[0009] It was recognized that an improved conveying device for a linear transport system can be provided by comprising a roller assembly with at least one first roller and a second roller offset from the first, a support unit with a first support and a second support, a first magnet assembly, a second magnet assembly, and a guide. The first roller is rotatably mounted on the first support about a first axis of rotation. The first magnet assembly is also attached to the first support. The second roller is rotatably mounted on the second support at a distance from the first roller about a second axis of rotation. The second magnet assembly is attached to the second support at a distance from the first magnet assembly. The first and second rollers are designed to guide the support unit slidably along the guide rail.The guide connects the first support to the second support so that it can slide along a sliding axis. The sliding axis is inclined at an angle to the second axis of rotation such that when the first and second supports are moved relative to each other along the sliding axis, the distance between the rollers on the first axis of rotation and the second axis of rotation can be changed.

[0010] This design has the advantage that the variable distance between the rollers of the conveyor along the track ensures optimal contact between the rollers and the track. Furthermore, it allows for play compensation between the rollers.

[0011] In another embodiment, the first magnet arrangement is mounted on the first support facing the second magnet arrangement and provides a first magnetic field. The second magnet arrangement is mounted on the second support facing the first magnet arrangement and provides a second magnetic field. This design has the advantage that, when mounted, the first magnet arrangement and / or the second magnet arrangement can each act on a stator module and are also attracted towards the stator module when it is deactivated. Activation of the stator module is not necessary to position the rollers at the optimal distance on the guide rail. The conveyor is therefore self-adjusting.

[0012] In a further embodiment, the first support is U-shaped and comprises a first support section, a second support section, and a third support section. The first support section and the third support section are arranged on a common side of the second support section and extend away from the second support section in a common direction. The first roller is rotatably mounted on the first support section. This design has the advantage that, due to its U-shape, the first support can circumferentially enclose the stator module of the linear transport system in sections. Furthermore, this design makes the first support particularly easy and cost-effective to manufacture, for example, using an injection molding process.Furthermore, the U-shaped design of the first beam has the advantage that the first beam can be designed to be particularly rigid and resistant to deformation, and thus high loads can be supported via the first beam on the first roller.

[0013] In another embodiment, the second support is U-shaped and comprises a fourth, a fifth, and a sixth support section. The fourth and sixth support sections are arranged on a common side of the fifth support section and extend from the fifth support section in a common direction. The second roller is rotatably mounted to the fourth support section. Furthermore, the first and fourth support sections abut each other. Due to the U-shaped design, the second support can be positioned on the inside of the first support. Likewise, the second support, like the first, can be manufactured simply and cost-effectively, for example, by injection molding. The U-shaped design also allows the second support, together with the first support, to define an interior space into which the stator module engages.

[0014] In another embodiment, the first support section and the fourth support section are abutting each other. This allows the first support and the second support to guide each other.

[0015] In a further embodiment, the first support has a first receptacle in its first support section. The first receptacle has at least one first receiving surface that extends inclined along a first direction to the sliding axis. The second support engages with the first receptacle at its fourth support section and rests against the first receiving surface to guide the first and second supports. This design has the advantage that the engagement of the fourth support section with the second receptacle prevents unwanted rotation of the second support relative to the first support. This ensures that the first and second supports have only one degree of freedom in their movement relative to each other.

[0016] In a further embodiment, the first magnet arrangement is arranged on the side of the first support section facing away from the first roller. On the sixth support section of the second support, the second magnet arrangement is arranged facing the first magnet arrangement. This design has the advantage that the conveyor requires a particularly small installation space and is especially slim in the direction of the first axis of rotation.

[0017] In a further embodiment, the guide has at least one guide pin and at least one first guide bushing. The guide pin extends along the sliding axis and is connected to the first support. The first guide bushing is connected to the second support. The guide pin passes through at least the first guide bushing such that it guides the second support in a movement along the sliding axis. This design has the advantage that the guide pin and the guide bushing can be formed from simple, known machine elements and, in particular, their dimensions can be easily adapted to one another.

[0018] In a further embodiment, the first support has a second receptacle arranged in the second support section. The fifth support section of the second support engages in the second receptacle, with the first guide bushing being arranged on the fifth support section, and the guide pin passing through the second receptacle and the first guide bushing. This design has the advantage that the installation space requirement is further reduced by the engagement of the fifth support section in the first receptacle, and in particular, this results in a particularly compact conveying device.

[0019] The movement of the first and second supports relative to each other along the sliding axis is limited by the fifth support section of the second support striking a first stop surface of the second receptacle in the first support. This design has the advantage that unintentional loosening or decoupling of the first support from the second support, or unintentional loosening of the guide, can be prevented by the first support striking the second support in the respective first and second end positions.

[0020] A particularly high contact force for pressing the first roller and the second roller against the guide rail can be provided by ensuring that the angle is from 1° inclusive to 7° inclusive, in particular from 2° inclusive to 5° inclusive.

[0021] An improved linear transport system can be provided by a linear transport system comprising a stationary guide rail, a stator module, and a conveying device. The conveying device is designed as described above. The guide rail has a first running surface and a third running surface arranged offset from the first running surface. The first roller rests against the first running surface, and the second roller rests against the third running surface. The stator module is arranged, at least partially, between the first and second magnet arrangements and has a stator tooth arrangement with at least one ferromagnetic stator tooth. The first magnet arrangement is magnetically coupled to at least one of the stator teeth of the stator tooth arrangement and provides a first magnetic force acting in the direction of the stator module.The second magnet arrangement is magnetically coupled to at least one of the stator teeth of the stator tooth arrangement opposite the first magnet arrangement and provides a second magnetic force acting in the direction of the stator module, wherein the guide translates the first magnetic force at least partially into a first contact force and the first support with the first contact force presses the first roller against the first rail running surface, wherein the guide translates the second magnetic force at least partially into a second contact force and the second support with the second contact force presses the second roller against the third rail running surface.

[0022] This design has the advantage that pressing the first and second rollers against the rail running surfaces on both sides ensures backlash-free guidance of the conveyor along the track. In particular, this ensures that the rollers remain securely in contact with the track even while the conveyor is being driven by the traveling element to move it along the sliding axis. This secure contact of the rollers with their respective rail running surfaces is guaranteed both during straight-line travel and when the conveyor is moving around curves. Additional devices for pressing the rollers against the rail running surfaces are unnecessary. As a result, the conveyor, the track, and the stator module are all designed with exceptional simplicity.

[0023] Furthermore, the first and second contact forces ensure tolerance compensation of the conveyor device on the guide rail, so that, for example, even with increasing wear of the rollers and / or the guide rail, the secure contact of the rollers with the guide rail is ensured over the service life of the conveyor device.

[0024] An improved operating method for the linear transport system described above can be provided by magnetically coupling the first magnet arrangement to at least one of the stator teeth of the stator tooth assembly, and by applying a first magnetic force that attracts the first magnet arrangement towards the stator module. Furthermore, the second magnet arrangement is magnetically coupled to at least one of the stator teeth of the stator tooth assembly, and a second magnetic force attracts the second magnet arrangement towards the stator module. The guide translates the first magnetic force into the first contact force, which acts at an angle, particularly perpendicular, to the first axis of rotation. The guide also translates the second magnetic force into the second contact force, which acts at an angle, particularly perpendicular, to the first axis of rotation. The first support transmits the first contact force to the first roller and presses the first roller against the guide rail with the first contact force.The second support transmits the second contact force to the second roller, pressing it against the guide rail. This design has the advantage that the contact forces can press both rollers against the guide rail from both sides, ensuring a backlash-free contact between the rollers and the guide rail both when cornering and traveling straight. Furthermore, the magnetic coupling allows for adjustment of the center-to-center distance between the first and second axes of rotation during operation, while simultaneously minimizing the number of moving parts. In particular, spring elements can be omitted.

[0025] It is particularly advantageous if a defined number of coils of the stator module are energized with an electric current to generate a traveling magnetic field for driving the conveyor. This traveling field is magnetically coupled to the first and second magnet arrangements such that the first magnetic force acts on the first magnet arrangement and the second magnetic force acts on the second magnet arrangement, at least partially, along the first axis of rotation. The traveling field amplifies the magnetic force acting on each respective magnet arrangement, thus increasing the pressure on the rollers against the track during operation of the conveyor, especially when traveling along the guide rail.

[0026] The invention is explained in more detail below with the aid of figures. These show: Fig. 1. A perspective view of a linear transport system; Fig. 2 a sectional view along a Fig. Section plane AA shown in 1 through the in Fig. 1 linear transport system shown; Fig. 3 An enlarged sectional view of a conveyor device of the linear transport system along a Fig. 1 shown section plane EE; Fig. 4 a perspective representation of the in Fig. 3 shown support facility of the in the Fig. Linear transport systems shown in 1 to 3; Fig. 5 a perspective representation of a first support of the in Fig. 4 conveyor system shown; Fig. 6 a sectional view along a Fig. Section BB shown in section 5 through the in Fig. 5 first carriers shown; Fig. 7 another perspective view of the in the Fig. 4 to 6 of the first carrier shown; Fig. 8 another perspective view of the in the Fig. 4 to 7 of the first carrier shown; Fig. 9 a perspective representation of the in Fig. 4 second support shown; Fig. 10 a sectional view along a in Fig. Section BB through the conveying device is shown in section 5; Fig. 11 a sectional view along the in Fig. 2 section plane FF shown through the conveyor device on the running rail; Fig. 12 a sectional view along the in Fig. 2 shown section plane FF through the in Fig. 2 Conveyor device shown in unassembled state in a first position; Fig. 13a a first sectional view along the in Fig. 2 shown section plane FF through the in Fig. 2 Conveyor device shown on the guide rail and the stator module in a first intermediate position; Fig. 13b a second sectional view along the in Fig. 2 shown section plane FF through the in Fig. 2 Conveyor device shown on the guide rail and the stator module in a second intermediate position; Fig. 14 a sectional view along a in Fig. 3 marked cutting plane CC through the in Fig. 3 conveyor system shown; Fig. 15 a sectional view along a in Fig. 4 marked cutting plane DD through the in Fig. 4 shown conveying device; and Fig. 16 a sectional view along the in Fig. Section EE shown in 4 through the in Fig. 4. Conveyor device shown in a second position.

[0027] The following figures refer to a coordinate system. This coordinate system has an x-axis (vertical direction), a y-axis (transverse direction), and a z-axis (longitudinal direction). The coordinate system shown here is a right-handed system. Other coordinate systems are possible, but this example serves to simplify the explanation of the following figures.

[0028] Fig. Figure 1 shows a perspective view of a linear transport system 10.

[0029] The linear transport system 10 has a stationary running rail 15, at least one conveying device 20 and a drive device 25 with at least one stator module 30, a connecting carrier 35 and a control unit 40.

[0030] The connecting carrier 35 can be attached to the underside of a machine bed 39 of the linear transport system 10. In this embodiment, the drive unit 25 has several stator modules 30 arranged adjacent to one another. Each of the stator modules 30 can contain a coil arrangement with a plurality of electrical coils that can be energized separately from one another (not in Fig. (1 shown) and have a stator tooth arrangement 31 with a plurality of stator teeth 32. The coils are arranged side by side and around at least one of the stator teeth 32. Each of the coils can be electrically connected to the control unit 40. The stator tooth 31 comprises a ferromagnetic material.

[0031] The control unit 40 is configured to energize a portion of the coils of the linear transport system 10 with electrical energy in such a way that an electromagnetic traveling field is generated by means of the energized coils, which emerges from the stator module 30. The representation of the traveling field and its magnetic field lines is referred to in Fig. 1. waived.

[0032] Furthermore, in Fig. Figure 1 shows, for example, several conveying devices 20, which may preferably be identical to one another. The conveying devices 20 are arranged at intervals from each other on the guide rail 15. Each of the conveying devices 20 can, for example, be moved independently of the other conveying device 20, for example, along a travel level 182. The conveying device 20 can, for example, transport an object between two stations, for example, in a production plant.

[0033] Fig. 2 shows a sectional view along a Fig. Section plane AA shown in 1 through the in Fig. 1 Linear transport system shown 10.

[0034] In this embodiment, the guide rail 15 is spaced apart from each of the stator modules 30, which are arranged parallel to the guide rail 15. The connecting support 35 connects, for example, the stator module 30 to the guide rail 15. Furthermore, it is supported in Fig. 2 on the underside of the connecting beam 35 on the machine bed 39 (dashed line in Fig. 2 shown schematically) from.

[0035] In this embodiment, the drive unit 25 and the guide rail 15 are designed such that they essentially enclose a circular track, which is, for example, O-shaped. Naturally, the design of the guide rail 15 and the drive unit 25 can be adapted to the specific application of the linear transport system 10.

[0036] The stator module 30 has a first stator side surface 45 and a second stator side surface 50. The first stator side surface 45 faces the guide rail 15. The second stator side surface 50 faces away from the guide rail 15 and is aligned parallel to the first stator side surface 45.

[0037] The first stator side surface 45 and the second stator side surface 50 can each be arranged in different yz planes.

[0038] Each stator tooth 32 extends between the first stator side surface 45 and the second stator side surface 50. The stator tooth 32 extends essentially in the x-direction through the stator module 30.

[0039] A clearance 55 is arranged between the guide rail 15 and the first stator side surface 45. The conveying device 20 engages in the clearance 55, at least partially.

[0040] The guide rail 15 essentially has a plate-shaped design. The guide rail 15 has a first running section 60 and a second running section 65 arranged opposite the first running section 60 in the y-direction. The conveying device 20 is guided through both the first running section 60 and the second running section 65, and the forces on the guide rail 15 are supported via the first and second running sections 60 and 65.

[0041] Fig. Figure 3 shows an enlarged sectional view of the linear transport system 10 along the in Fig. Section plane EE shown in section 1.

[0042] The guide rail 15 has a first running surface 70 and preferably a second running surface 75 in the first running section 60. For example, the first running surface 70 and the second running surface 75 are oriented at an angle to a guide rail side surface 76, which may, for example, be aligned parallel to the first stator side surface 45. The first running surface 70 may, for example, be arranged at a right angle to the second running surface 75. It would also be possible for the guide rail 15 to have an arcuate shape, in particular a semicircular shape, in the first running section 60.

[0043] The second running section 65 is arranged at a transverse (y-direction) distance from the first running section 60. The second running section 65 has a third rail running surface 80 and, for example, a fourth rail running surface 85. The third rail running surface 80 is aligned parallel to the second rail running surface 75, and the fourth rail running surface 85 is aligned parallel to the first rail running surface 70. The first rail running surface 70 and the third rail running surface 80 are located on the side facing the stator module 30, and the second rail running surface 75 and the fourth rail running surface 85 are located on the side facing away from the stator module 30 and adjacent to the running rail side surface 76.

[0044] In the transverse direction (y-direction), the running rail 15 has a maximum width s.

[0045] The conveyor device 20 comprises a roller assembly 90, a carrier unit 95, a first magnet assembly 100, a second magnet assembly 105, a detection flag 195, and a guide 110. The guide 110 is in Fig. 3 schematically indicated by means of dashed lines.

[0046] The carrier unit 95 has a first carrier 115 and a second carrier 120, wherein the first carrier 115 and the second carrier 120 are slidably interlocked.

[0047] The track roller assembly 90 comprises at least one first track roller 125 and one second track roller 130. Additionally, the track roller assembly 90 may, for example, also have a third track roller 135, which is located in Fig. 3 is covered by the first roller 125.

[0048] Fig. 4 shows a perspective view of the in Fig. 3 shown support facility 20.

[0049] The first roller 125 is rotatably mounted on the first support 115 about a first axis of rotation 140. The first axis of rotation 140 is, for example, aligned parallel to the x-axis.

[0050] The first roller 125 has a first guide groove 145 circumferentially around the first axis of rotation 140. The first guide groove 145 is preferably formed corresponding to the guide rail 15 in the first running area 60.

[0051] The first roller 125 has, for example, a first roller running surface 150 and a second roller running surface 155 on the first guide groove 145. The first roller running surface 150 and the second roller running surface 155 are preferably aligned corresponding to the first rail running surface 70 and the second rail running surface 75.

[0052] The second roller 130 is arranged offset in the y-direction from the first roller 125. The second roller 130 is rotatably mounted on the second support 120 about a second axis of rotation 160. The first axis of rotation 140 and the second axis of rotation 160 are aligned parallel to each other. Furthermore, the second axis of rotation 160 can extend parallel to the x-axis. The second roller 130 can be identical to the first roller 125 in order to minimize the variety of parts on the conveyor 20.

[0053] The second roller 130 has a second guide groove 165 extending completely around the second axis of rotation 160 in the circumferential direction. In this embodiment, the second guide groove 165 can, in particular, be shaped to correspond to the second running area 65 of the guide rail 15. The second roller 130 can have a third roller running surface 170 and a fourth roller running surface 175 arranged at an angle to the third roller running surface 170 on the second guide groove 165. The first roller running surface 150 can, for example, be aligned parallel to the fourth roller running surface 175, and the second roller running surface 155 can be aligned parallel to the third roller running surface 170.

[0054] In this embodiment, the first roller running surface 150 and the third roller running surface 170 are arranged on the side facing away from the carrier unit 95, and the second roller running surface 155 and the fourth roller running surface 175 are arranged on the side facing the carrier unit 95.

[0055] In the z-direction, the optional third roller 135 is rotatably mounted on the first support 115 about a third axis of rotation 180, offset from the first roller 125 and the second roller 130. The first axis of rotation 140, the second axis of rotation 160, and the third axis of rotation 180 are aligned parallel to each other and each perpendicular to the running plane 182. The third roller 135 is arranged in a common xz-plane together with the first roller 125. Furthermore, the third roller 135 can be identical to the first roller 125, so that what has been explained for the first roller 125 also applies to the third roller 135.

[0056] The first support 115 and the second support 120 interlock. Both the first support 115 and the second support 120 have, for example, a generally U-shaped basic form. The first support 115 and the second support 120 circumferentially enclose a stator receiving space 181 in sections. The stator module 30 engages in the stator receiving space 181 when assembled.

[0057] The first magnet arrangement 100 is arranged on the first support 115 on a side facing away from the roller arrangement 90. The first magnet arrangement 100 is arranged transversely, for example, between the first roller 125 and the second roller 130. The first magnet arrangement 100 can comprise one or more first permanent magnets 185, wherein the first magnet arrangement 100 provides a first magnetic field by means of the first permanent magnets 185.

[0058] The second magnet arrangement 105 is arranged opposite the first magnet arrangement 100 in the x-direction and preferably comprises at least one or more second permanent magnets 190. The second magnet arrangement 105 provides a second magnetic field.

[0059] Additionally, the conveyor 20 can have a detection flag 195, wherein the detection flag 195 is connected to the first support 115 on one side facing away from the first roller arrangement 90. In the assembled state of the linear transport system 10, the detection flag 195 can engage in the free space 55. The position of the conveyor 20 on the drive unit 25, in particular the stator module 30, can be determined by means of the detection flag 195.

[0060] Fig. Figure 5 shows a perspective view of a first support 115 of the in Fig. 4 shown support facility 20.

[0061] To form the U-shaped basic shape, the first support 115 has a first support section 200, a second support section 205 and a Fig. 5 the third support section 210, which is shown essentially concealed. The first support section 200 is plate-shaped and extends essentially in a yz-plane and is arranged on one side of the first support 115 facing the roller assembly 90.

[0062] The second beam section 205 is essentially plate-shaped and extends, for example, essentially in an xz-plane. The third beam section 210 is spaced vertically (x-direction) from the first beam section 200 and has a plate-shaped base. Both the first beam section 200 and the third beam section 210 are attached to the second beam section 205 and extend away from it in a common direction. The second beam section 205 thus connects the first beam section 200 with the third beam section 210. The first beam section 200 and the third beam section 210 can be essentially parallel to each other. Furthermore, the third beam section 210 can be shorter in the transverse direction.

[0063] In this embodiment, the first, second and third support sections 200, 205, 210 are, by way of example, formed in one piece and of a single material.

[0064] The second support section 205 has a fastening surface 215 which is located in Fig. Figure 5 is shown as an example above, where further components can be attached to the conveyor 20 at the mounting surface 215. For example, a support plate of a component to be transported can be attached to the mounting surface 215. It would also be possible for the mounting surface 215 to be arranged on the third support section 210, or for another mounting surface 215 to be arranged on the third support section 210.

[0065] Furthermore, a second receptacle 220 is arranged in the second support section 205. The second receptacle 220 is designed as a through-opening and extends from the mounting surface 215 to a first inner surface 225 of the first support 115. The first inner surface 225 of the first support 115 defines the stator receptacle space 181. The second receptacle 220 can, for example, have a rectangular shape with a viewing direction perpendicular to the mounting surface 215.

[0066] Furthermore, a first opening 230 can be arranged in the first beam section 200. The first opening 230 extends along the first beam section 200 in a transverse direction and is shaped as a through-opening. When viewed perpendicular to the first beam section 200, the first opening 230 can have a rectangular shape.

[0067] The first recording 230 has at least one first recording surface 235 and preferably a second recording surface 240 arranged opposite the first recording surface 235 in the z-direction. The first recording surface 235 and the second recording surface 240 are preferably arranged parallel to each other and can each extend in an xy-plane.

[0068] Fig. Figure 6 shows a sectional view along a [unclear] in Fig. Section BB shown in section 5 through the in Fig. 5 shown first carrier 115.

[0069] The guide 110 has a guide pin 245. The guide pin 245 extends through the second receptacle 220. The guide pin 245 extends along a sliding axis 250. The sliding axis 250 is preferably inclined relative to the second axis of rotation 160. "Inclined" here means a non-perpendicular and non-parallel orientation of the sliding axis 250 with respect to the second axis of rotation 160.

[0070] The second axis of rotation 160 and the lateral axis 250 can, for example, be arranged in a common plane. This plane is, for instance, an xy-plane. The second axis of rotation 160 and the lateral axis 250 intersect in this plane.

[0071] The sliding axis 250 forms an angle α obliquely inclined to the second rotation axis 160. To represent the angle α graphically in Fig. Being able to represent 6 is in Fig. 6 the second axis of rotation 160 in the y-direction in the direction of the sliding axis is shown shifted upwards with the reference symbol 160A.

[0072] The angle α is between 0° and 90°. The first angle α preferably has a value of 1° to 7° inclusive, and preferably 2° to 5° inclusive.

[0073] In this embodiment, the guide pin 245 is, for example, cylindrical in shape. The guide pin 245 has a guide surface 255 on its circumferential side. The guide surface 255 is arranged at a distance from the second receptacle 220.

[0074] To secure the guide pin 245, the first support 115 can have a first pin receptacle 260 and / or a second pin receptacle 265, wherein, in this embodiment, the first pin receptacle 260 and the second pin receptacle 265 are designed as through-holes. The first pin receptacle 260 faces the first support section 200. The second pin receptacle 265 faces the third support section 210 and is located away from the first support section 200. In this embodiment, the first and second pin receptacles 260 and 265 are formed in conjunction with the guide surface 255 in an interference fit system, such that the guide pin 245 is pressed into the first pin receptacle 260 and the second pin receptacle 265.

[0075] Of course, it is also possible that, for example, the guide pin 245 is attached to the first support 115 in a different way. For instance, the guide pin 245 could also be screwed and / or glued into the first and / or second bolt receptacle 260, 265.

[0076] Due to the inclined arrangement of the guide bolt 245 to the second axis of rotation 160, the first bolt receptacle 260 is positioned closer to the mounting surface 215 and further away from the first axis of rotation 140 and / or second axis of rotation 160 than the second bolt receptacle 265 in the transverse direction.

[0077] In this embodiment, the first bolt receptacle 260 and the second bolt receptacle 265 are designed as through openings. Of course, it would also be possible for at least one of the two bolt receptacles 260, 265 to be designed, for example, as a blind hole or in combination with an internal thread.

[0078] In this embodiment, the first receiving area 230 is, for example, designed as a through-opening. The first receiving area 230 is also, for example, open on the side facing the first roller 125. The first receiving surface 235 and the second receiving surface 240 are arranged parallel to each other, with the first and second receiving surfaces 235, 240 being aligned parallel to a further plane in which the sliding axis 250 runs.

[0079] The first support section 200 completely encloses the first receptacle 230 on its circumference, so that the first support section 200 is rigidly shaped and bending of the first support section 200, in particular about a z-axis, can be avoided or minimized.

[0080] Fig. Figure 7 shows another perspective view of the [object] in the Fig. 4 to 6 shown first support 115 and guide bolt 245.

[0081] The second receptacle 220 extends, for example, at least over a minimum extent a in the longitudinal direction of the second support section 205, wherein the second receptacle 220 has a receiving contour with at least one first stop surface 270 and one second stop surface 275. The first stop surface 270 is located on a side facing the first support section 200 and the second stop surface 275 on a side of the second receptacle 220 facing away from the first support section 200. The first stop surface 270 and the second stop surface 275 are inclined to the sliding axis 250 and the first rotation axis 140.

[0082] The first bolt receptacle 260 can terminate in the first stop surface 270, and the second bolt receptacle 265 can terminate in the second stop surface 275. In this embodiment, the first stop surface 270 and the second stop surface 275 are, by way of example, parallel to each other.

[0083] Furthermore, the second receptacle 220 can have a third receptacle surface 280 and a fourth receptacle surface 285 arranged in the z-direction relative to the third receptacle surface 280, which are, for example, aligned parallel to each other and to the sliding axis 250. The third and fourth receptacle surfaces 280, 285 are preferably spaced apart from the guide pin 245.

[0084] The first recording surface 235 of the first recording 230 and the third recording surface 280 of the second recording 220 can be arranged in a common plane and may optionally merge directly into one another. Likewise, the second recording surface 240 of the first recording 230 and the fourth recording surface 285 can be arranged in a common (further) plane and preferably merge directly into one another.

[0085] Fig. Figure 8 shows another perspective view of the area in the Fig. 4 to 7 shown first carrier 115.

[0086] Additionally, the first support 115 can have a third receptacle 290, wherein the third receptacle 290 is arranged on the first inner surface 225 of the third support section 210 facing the first support section 200. In contrast to the first receptacle 230 and the second receptacle 220, the third receptacle 290 is closed on the outside on the side facing away from the first support section 200 (in the x-direction), so that the third receptacle 290 essentially has a groove-shaped design towards the first inner surface 225.

[0087] The third receiver 290 has a fifth receiver surface 295 and a sixth receiver surface 300 arranged offset in the z-direction relative to the fifth receiver surface 295. The fifth receiver surface 295 can be arranged parallel to the sixth receiver surface 300. In particular, the fifth receiver surface 295 and the third receiver surface 280 can be arranged in a common plane, for example, an xy-plane, and preferably merge into one another. The sixth receiver surface 300 and the fourth receiver surface 285 can also be arranged in a common (further) plane, for example, an xy-plane, and preferably merge into one another.

[0088] On the side facing the first inner surface 225, the first support section 200 has a first magnetic mounting surface 305. The first magnet arrangement 100 is attached to the first magnetic mounting surface 305 (in Fig. 8 (indicated by dashed lines) is attached. The attachment can be done, for example, by means of a screw connection or an adhesive connection.

[0089] Fig. Figure 9 shows a perspective view of the in Fig. 4 shown second carrier 120.

[0090] The second support 120 essentially has a U-shaped basic form. The second support 120 comprises a fourth support section 310, a fifth support section 315, and a sixth support section 320. The fourth support section 310 and the sixth support section 320 are arranged on a common side of the fifth support section 315 and are offset from each other in the vertical (x-direction). The fourth support section 310 and the sixth support section 320 extend away from the fifth support section 315 on a common side and, when disassembled, can be aligned parallel to each other and along the y-axis. In this embodiment, the sixth support section 320 is, for example, shorter in the transverse direction than the fourth support section 310.

[0091] Due to the U-shaped design of the second support 120, the second support 120, together with the fourth to sixth support sections 310, 315, 320, partially encloses the stator receiving space 181 with a second inner surface 340, into which the stator module 30 engages in the assembled state of the linear transport system 10.

[0092] The fourth support section 310 can be beam-shaped. Opposite the fifth support section 315 in the y-direction, the second roller 130 can be rotatably attached to a first free end of the fourth support section 310 about the second axis of rotation 160.

[0093] On a second free end of the sixth beam section 320, facing away from the fixed end 335 of the sixth beam section 320, the sixth beam section 320 has a widening area 330. The widening area 330 projects beyond the narrow area 331 of the sixth beam section 320, which is arranged between the widening area 330 and the fixed end 335, on both sides in the z-direction.

[0094] As a result, the sixth support section 320 has a side view (the viewing direction of the side view is in Fig. 9 (indicated by an arrow) shows an exemplary T-shaped basic form.

[0095] On the side of the widening area 330 facing the second inner side 340, which faces the fourth support section 310, the sixth support section 320 has a second magnetic mounting surface 345. When the conveyor device 20 is assembled, the second magnet arrangement 105 (dashed line in Fig. (shown in 9) attached, for example screwed on.

[0096] The second beam 120 has a first end face 351 on the side facing the viewer. The first end face 351 can, for example, be planar and extend over the fourth beam section 310, the fifth beam section 315, and the narrow area 331 of the sixth beam section 320. The first end face 351 is overlaid in the z-direction by the widening area 330 of the sixth beam section 320.

[0097] Opposite the first end face 351 in the z-direction, the second support 120 has a second end face 352, which is preferably arranged parallel to the first end face 351. The second end face 352 preferably extends over the fourth support section 310, the fifth support section 315 and the narrow area 331 of the sixth support section 320, wherein, for example, the second end face 352 is projected beyond the widening area 330 in the z-direction.

[0098] Fig. Figure 10 shows a sectional view along a [unclear] in Fig. Section 4 shown, section plane BB through the conveying device 20.

[0099] In Fig. For the sake of clarity, the illustration of the roller arrangement 90, the first magnet arrangement 100 and the first support 115 is omitted.

[0100] The second support 120 has a through-opening 350 in the fifth support section 315. The through-opening 350 extends along the sliding axis 250 and is thus oriented obliquely to the first axis of rotation 140, the second axis of rotation 160, and / or the third axis of rotation 180. The through-opening 350 is preferably stepped such that it has a first bushing receptacle 355 on one side and a second bushing receptacle 360 ​​opposite it in the x-direction.

[0101] The first bushing receptacle 355 is, for example, arranged on the side facing the fourth support section 310, while the second bushing receptacle 360 ​​is arranged on the side facing away from the fourth support section 310. Furthermore, the first bushing receptacle 355 is positioned further away from the fourth support section 310 in the y-direction than the second bushing receptacle 360.

[0102] Between the first bushing receptacle 355 and the second bushing receptacle 360, an inner circumferential side 365 of the through-hole 350 is formed with a smaller radius than in the area of ​​the first and second bushing receptacles 355, 360.

[0103] A first guide bushing 370 is inserted into the first bushing receptacle 355 and a second guide bushing 375 is inserted into the second bushing receptacle 360, preferably pressed in, so that the respective guide bushing 370, 375 is connected to the second carrier 120.

[0104] The guide bushings 370, 375 can have a different material than the second support 120 and the guide pin 245.

[0105] Fig. Figure 11 shows a sectional view along the in Fig. Section 4 shown in section BB through the conveyor device 20 on the running rail 15 and the stator module 30.

[0106] The first support 115 and the second support 120 interlock, with the second support 120 being arranged at least partially on the inside of the first support 115. Together, the first support 115 and the second support 120 enclose the stator receiving space 181, into which one of the stator modules 30 engages.

[0107] Furthermore, the first and second magnet arrangements 100, 105 are arranged essentially opposite each other in the x-direction. However, the second magnet arrangement 105 can have a height offset h relative to the first magnet arrangement 100. Furthermore, the guide 110 allows the first support 115 and the second support 120 to be displaceable relative to each other, such that the distance b between the first magnet arrangement 100 and the second magnet arrangement 105 in the x-direction can be varied.

[0108] In the assembled state of the conveying device 20, the guide pin 245 not only passes through the second receptacle 220, but also through the first guide bushing 370, the second guide bushing 375 and the through-opening 350. The guide pin 245, with its circumferential guide surface 255, rests against the inside of the guide bushings 370 and 375, whereby the guide bushings 370 and 375 and the second support 120 connected to the guide bushings 370 and 375 are arranged to be displaceable relative to the guide pin 245 and thus along the sliding axis 250.

[0109] A radial gap is provided between the guide surface 255 and the through opening 350 in the fifth support section 315, so that unnecessary wear on the guide surface 255 and unwanted rubbing of the fifth support section 315 directly against the guide pin 245 during movement of the second support 120 and the first support 115 relative to each other is avoided.

[0110] Furthermore, the fifth support section 315 engages the second support 120 almost completely in the second recess 220. Additionally, the sixth support section 320 projects into the third recess 290 with its narrow section 331. The widening section 330, to which the second magnet arrangement 105 is attached, is located outside the third recess 290 of the first support 115 on the side facing away from the fifth support section 315.

[0111] The fourth support section 310 engages the second support 120 in the first receptacle 230. The fourth support section 310 is arranged relative to the first support section 200 such that the second roller 130 is positioned on the guide rail 15 essentially opposite the first roller 125 and the third roller 135 in the y-direction.

[0112] The second support 120 is arranged to be displaceable relative to the first support 115 between a first position and a second position along the sliding axis 250 by means of the guide 110. Both the first position and the second position constitute limit positions beyond which no further displacement of the first support 115 and the second support 120 relative to each other is possible. The first and second positions can only be assumed when the conveyor 20 is disassembled, i.e., when the conveyor 20 is not mounted on the guide rail 15 or when the rollers 125, 130, 135, 140 are worn far beyond a permissible limit.

[0113] Due to their adjustability, the first support 115 and the second support 120 can be arranged relative to each other in different intermediate positions between the first and second positions. The intermediate position represents a typical, regular operating state of the conveyor 20 when mounted on the guide rail 15, particularly when, for example, the wear limits of the rollers 120, 125, 130, 135 are observed.

[0114] Furthermore, due to the displaceability and the sliding axis 250 arranged at an angle to the first to third axis of rotation 140, 160, 180 and the driving plane 182, a roller spacing 1, which is determined in the embodiment with respect to the y-axis between the first and third axis of rotation 140, 180 to the second axis of rotation 160, is variable.

[0115] Thus, in the first position the track roller spacing 1 can be minimized and in the second position the track roller spacing 1 can be maximized. The first position is described in detail in Fig. 12 and in detail in the second position Fig. 16 received. Examples of possible intermediate positions between the first position and the second position of the first carrier 115 and the second carrier 120 are in the Fig. 13a and Fig. 13b shown.

[0116] The ideal roller spacing is 1, and thus the alignment of the first support 115 and the second support 120 relative to each other is such that the first roller 125 and preferably the third roller 135, with its first roller running surface 150, rests against the first rail running surface 70 and with its second roller running surface 155 against the second rail running surface 75, and the second roller 130, with its third roller running surface 170, rests against the third rail running surface 80 and with its fourth roller running surface 175, preferably rests against the fourth rail running surface 85.

[0117] The stator module 30 is designed to be magnetically conductive, at least in the area of ​​the stator receiving space 181.

[0118] When the conveyor 20 is mounted on the stator module 30, the first magnetic field acts on the ferromagnetic stator tooth 32 of the stator tooth assembly 31, which is arranged opposite it in the x-direction, such that the first magnet assembly 100 is attracted towards the stator module 30 with the first magnetic force F1. The second magnetic field acts on the ferromagnetic stator tooth 32 of the stator tooth assembly 31, which is arranged opposite it in the x-direction, such that the second magnet assembly 105 is attracted towards the stator module 30 with the second magnetic force F2. The first magnetic force F1 and the second magnetic force F2 are directed oppositely to each other and have different values. Both the first magnetic force F1 and the second magnetic force F2 act in the x-direction.

[0119] The first magnetic force F1 is coupled to the first roller 125 and preferably to the third roller 135 via the first support 115 and the guide 110. The guide 110 translates at least a portion of the first magnetic force F1, acting along the x-axis, into a first contact force FA1 acting in the y-direction. The first contact force FA1 presses the first roller 125 and / or the third roller 135 against the guide rail 15 in the y-direction. Thus, the first magnetic force F1 acts indirectly on the first and third rollers 125 and 135 via the first support 115 and the guide 110. The guide rail 15 provides a first counterforce FG1 at the first running section 60, corresponding to and acting in the opposite direction to the first contact force FA1.

[0120] The second magnetic force F2 acts from the second magnet arrangement 105 via the second support 120 and the guide 110 onto the second roller 130. The guide 110 translates a second component of the second magnetic force F2, acting in the x-direction, into a second contact force FA2 acting in the y-direction. The second contact force FA2 acts opposite to the first contact force FA1 in the y-direction such that the second roller 130 is pressed towards the guide rail 15 on the side facing away from the first roller 125. Furthermore, the first guide rail 15 provides a second counterforce FG2 at the second running area 65, which corresponds to the second contact force FA2 but is directed against it.

[0121] Both the first counterforce FG1 and the second counterforce FG2 prevent further displacement of the first support 115 and the second support 120 relative to each other, so that the first and second supports 115, 120 remain in the intermediate position. This makes the conveyor 20 self-adjusting on the guide rail 15.

[0122] Furthermore, in the intermediate position, a longitudinal gap is arranged between the first stop surface 270 and the fifth support section 315 and between the second stop surface 275 and the fifth support section 315.

[0123] The first contact force FA1 and the second contact force FA2 further ensure that the first roller 125 and / or third roller 135 are securely in contact with the first running area 60 and that the second roller 130 is securely in contact with the second running area 65 of the running rail 15.

[0124] In particular, a backlash-free contact between the rollers 125, 130, 135 and the guide rail 15 can be ensured. Furthermore, tolerance compensation can be ensured even in the event of wear of the rollers 125, 130, 135 and a consequent reduction in the rolling diameter of the rollers 125, 130, 135 and / or the running areas 60, 65. For tolerance compensation, the first support 115 and the second support 120 are shifted relative to each other by means of the first magnetic force F1 and the second magnetic force F2, such that the first and second rollers 125, 130 contact their respective first running area 60 and the second roller 130 contacts its second running area 65.

[0125] The rigid design of the first support 115 and the positioning of the first roller 125 and the third roller 135 on the guide rail 15 cause the second support 120 in particular to move relative to the first support 115 along the sliding axis 250 in order to minimize the distance b.

[0126] Fig. Figure 12 shows a sectional view along the in Fig. Section BB shown in 4 through the in Fig. 4 Conveyor system 20 shown in unassembled state.

[0127] In Fig. In the first position, the second support 120 is arranged relative to the first support 115 and displaced along the guide 110. In the first position, the roller spacing 1 is at its maximum with respect to the first axis of rotation 140 and the second axis of rotation 160 in the y-direction. Furthermore, the distance b between the first magnet arrangement 100 and the second magnet arrangement 105 is at its maximum.

[0128] In the first position, the fifth support section 315 rests against the first stop surface 270 of the second receptacle 220, which is located on the side facing away from the first support section 200 and the fourth support section 310. Further movement along the sliding axis 250, during which the sixth support section 320, and thus the second magnet arrangement 105, is moved away from the first magnet arrangement 100 and the first support section 200, is blocked by this stop, so that the distance b cannot be increased beyond the first position. This prevents the first support 115 and the second support 120 from unintentionally separating from each other.

[0129] The first position represents the reassembled state of the conveyor unit 20, which is avoided when the conveyor unit 20 is mounted on the guide rail 15. In the reassembled state, the first and second magnetic forces F1, F2 do not act on the first magnet arrangement 100 and the second magnet arrangement 105, so that no magnetic force-induced displacement of the first support 115 and second support 120 relative to each other occurs. The reassembled state is a state in which the conveyor unit 20 is not integrated into the linear transport system 10, i.e., it is not attached to the guide rail 15 and the stator module 30.

[0130] Fig. Figure 13a shows a first sectional view along the in Fig. 2 shown section plane FF through the in Fig. 2. Conveyor device shown on the running rail and the stator module in a first intermediate position. Fig. Figure 13b shows a second sectional view along the in Fig. 2 shown section plane FF through the in Fig. 2 Conveyor device shown on the running rail and the stator module in a second intermediate position different from the first intermediate position.

[0131] A first air gap 380 with a first air gap width s1 is arranged longitudinally between the first magnet arrangement 100 and the first stator side face. A second air gap 385 with a second air gap width s2 is arranged longitudinally between the second magnet arrangement 105 and the first stator side face 50.

[0132] As already mentioned in the context of Fig. As explained in section 11, the displacement of the first support 115 and the second support 120 relative to each other occurs primarily through a movement of the second support 120 along the sliding axis 250 relative to the first support 115. Due to the rigid design of the first support 115 and the fixed rail spacing of the guide rail 15 to the stator module 30, the first air gap 380 remains essentially constant in the first air gap width s1 during movement.

[0133] In Fig. Figure 13a shows the first intermediate position of the first support 115 and the second support of the conveyor device 20 on the guide rail 15. The roller spacing 1, the first air gap 380, the second air gap 385, and the distance b of the magnet arrangements 100, 105 are shown, which are varied by shifting the second support 120 relative to the first support 115 to accommodate the respective geometry of the rollers 125, 130, 135, 140 and the guide rail 15.

[0134] Due to the reduced roller spacing 1, in the first intermediate position the magnet arrangements 100, 105 are arranged at a closer distance b to each other than in the first position, so that the distance b is reduced.

[0135] The first air gap width s1 can differ from the second air gap width s2. In particular, the second support 120 can be displaced relative to the first support such that the second air gap width s2 is reduced compared to the first air gap width. This further results in the first magnetic force F1 being different, and in particular smaller, compared to the magnetic force F2.

[0136] In Fig. 13b the first and second carriers 115, 120 are arranged in the second intermediate position, which is different from the first intermediate position.

[0137] In particular, in the second intermediate position, the second support 120 can be displaced further from the first intermediate position towards the second position relative to the first support 115. This can further reduce the second air gap width s2 compared to the second air gap width s2 in the first intermediate position and compared to the first air gap width s1. As a result, the second magnetic force F2 is greater than the first magnetic force F1, and therefore the first contact force FA1 is also smaller than the second contact force FA2.

[0138] The different roller spacing 1, the different first and second air gap widths s1 and s2, and the different distance b between the magnet arrangements 100, 105 can be caused by a different width s of the guide rail 15 and / or by wear of the rollers 125, 130, 135, 140. The air gap width s1, s2 directly affects the first contact force FA1 and the second contact force FA2 via the first and second magnetic forces, and thus the preload with which the conveyor 20 is attached to the guide rail 15.

[0139] The guide rail 15 can have different widths s along its z-direction, resulting, for example, from wear and tear or from cornering. During self-adjustment, the conveyor 20 assumes various intermediate positions in which it is pre-tensioned on the guide rail 15. In these intermediate positions, further movement of the first support 115 and the second support 120 is essentially limited by the geometry of the guide rail 15.

[0140] The slight inclination of the sliding axis 250 relative to the first pivot axis 140 has the advantage that high first and second contact forces FA1, FA2 can be provided even with low first and second magnetic forces F1, F2. For example, the first contact force FA1 relative to the second contact force FA2 between the rollers 125, 130, 135 can be between 700 and 1100 Newtons, even if the magnetic force F1, F2 between the two magnet arrangements 100, 105 is in the range of 80 to 100 Newtons.

[0141] Furthermore, the guide 110 and the different materials of the guide pin 245 and the guide bushings 370, 375 ensure low-wear guidance that is particularly compact and ensures a high contact force FA1, FA2 on the rollers 125, 130, 135.

[0142] The automatic adjustment of the roller spacing 1 by the magnet arrangements 100, 105 also ensures tolerance compensation. In particular, as the rollers 125, 130, 135 wear, the roller spacing 1 is reduced, causing the second support 120 to move towards the second position and thereby decreasing the distance between the first and second magnet arrangements 100, 105.

[0143] Even when traveling along curves on the guide rail 15, for example when it is curved around the z-axis, the conveyor device 20 with the roller arrangement 90 can optimally adapt to a curve radius of the guide rail 15 by means of the displacement of the first and second supports 115, 120 and the changeability of the roller spacing 1, so that a secure contact of all rollers 125, 130, 135 with the guide rail 15 is ensured.

[0144] Fig. Figure 14 shows a sectional view along a [unclear] in Fig. 3 marked cutting plane CC through the in Fig. 3 shown support facility 20.

[0145] The fourth beam section 310 engages the first receptacle 230 of the first beam section 200 of the first beam 115. The fourth beam section 310 rests with its first end face 351 against the first receptacle side surface 235 and with its second end face 352 against the second receptacle side surface 240. The contact of the fourth beam section 310 with the first and second receptacle side surfaces 235 and 240 prevents unintentional rotation of the second beam 120 about the sliding axis 250.

[0146] In addition, the maximum rotation of the first support 115 and the second support 120 about the sliding axis 250 is limited by the fifth support section 315 striking the third receiving side surface 280 with the first end face 351 and / or the second end face 352 striking the fourth receiving side surface 285.

[0147] Fig. Figure 15 shows a sectional view along a [unclear] in Fig. 4 marked cutting plane DD through the in Fig. 4 shown support facility 20.

[0148] Furthermore, in the third recess 290 of the first support 115, the first end face 351 of the second support 120 abuts the fifth recess side face 295, and the second end face 352 abuts the sixth recess side face 300. The third recess 290 is designed in the y-direction such that in the first position a gap is provided between the narrow area 331 and a recess base of the third recess 290.

[0149] By placing the first end face 351 and the second end face 352 on the respective assigned receiving side surface 235, 240, 280, 285, 295, 300, a rotation of the second support 120 relative to the first support 115 along the sliding axis 250 is avoided even when the conveying device 20 is moved along the running rail 15.

[0150] Furthermore, during the movement between the first and second positions, a reliable displacement of the second support 120 relative to the first support 115 in the respective first to third mountings 220, 230, 290 is ensured. This prevents clicking, pendulum swinging, or tilting of the conveyor 20 on the guide rail 15.

[0151] Fig. Figure 16 shows a sectional view along the in Fig. Section BB shown in 4 through the in Fig. 4 Conveyor system 20 shown in the second position and disassembled state.

[0152] In the second position, the second support 120 is displaced along the sliding axis 250 relative to the first position in such a way that the second support 120 abuts the second stop surface 275 of the second receptacle 220, which is arranged on the side facing the first support section 200 and fourth support section 310, and thereby blocks any further movement of the second support 120 relative to the first support 115.

[0153] In the second position, the distance between the rollers is minimized. Thus, in the second position, the second roller 130 is shifted towards the first and third rollers 125 and 135 compared to the first position.

[0154] The in the Fig.The embodiment of the linear transport system 10, in particular the conveyor device 20, described in sections 1 to 16, has the advantage that, when the traveling field is provided by a part of the coils of the stator module 30, the traveling field can interact with the first magnetic field of the first magnet arrangement 100 and the second magnetic field of the second magnet arrangement 105 in order to move the conveyor device 20 along the guide rail 15.

[0155] Furthermore, by engaging the fifth support section 315 with the respective stop surface 270, 275 in the second receptacle 220 in the first and second positions, it is ensured that, in the limiting case of a maximum displacement of the first support 115 relative to the second support 120, no further displacement is possible. This prevents, for example, the magnet arrangements 100, 105 from adhering to the stator module 30 if, for example, no guide rail 15 is arranged between the rollers 125, 130, 135.

[0156] Furthermore, the conveyor 20 has a small number of components, making it particularly easy and cost-effective to manufacture. In particular, additional spring elements, especially coil springs, are not required to press the rollers 125, 130, 135 against the guide rail 15 in a defined manner. The contact force FA1, FA2 is also significantly increased compared to coil springs. Reference symbol list 10 Linear transport systems 15 Running rail 20 funding institution 25 Drive unit 30 Stator module 31 Stator tooth arrangement 32 Stator tooth 35 connecting beams 39 Machine bed 40 Control unit 45 first stator side surface 50 second stator side surface 55 free space 60 first running area 65 second running area 70 first rail running surface 75 second rail running surface 76 Rail side surface 80 third rail running surface 85 fourth rail running surface 90 roller arrangement 95 carrier unit 100 first magnet arrangement 105 second magnet arrangement 110 Leadership 115 first carrier 120 second carrier 125 first roller 130 second roller 135 third roller 140 first axis of rotation 145 first guide groove 150 first roller running surface 155 second roller running surface 160 second axis of rotation 165 second guide groove 170 third roller running surface 175 fourth roller running surface 180 third axis of rotation 181 Stator mounting chamber 182 Driving level 185 first permanent magnet 190 second permanent magnet 195 Detection flag 200 first support section 205 second support section 210 third support section 215 Mounting surface 220 second recording 225 first inside 230 first recording 235 first recording surface 240 second recording surface 245 guide pins 250 sliding axle 251 Level 255 guide surface 260 first bolt holder 265 second bolt holder 270 first stop surface 275 second stop surface 280 third recording side surface 285 fourth recording side surface 290 third recording 295 fifth recording surface 300 sixth recording surface 305 first magnetic mounting surface 310 fourth support section 315 fifth support section 320 sixth support section 330 widening area 331 narrow area 335 fixed end of the sixth support section 340 second inside 345 second magnetic mounting surface 350 Through opening 351 first front face 352 second front face 355 first socket 360 second socket 365 inner perimeter page 370 first guide bushing 375 second guide bushing 380 first air gap 385 second air gap 390 longitudinal gap a minimal extent b distance F1 first magnetic force F2 second magnetic force FA1 first contact pressure FA2 second contact force 1 Roller spacing h height offset α angle s1 first air gap width s2 second air gap width

Claims

[1] Conveyor device (20) for a linear transport system (10) with a stationary guide rail (15) - wherein the conveyor device (20) - a roller arrangement (90) with at least one first roller (125) and a second roller (130) arranged offset from the first roller (125), - a carrier unit (95) with a first carrier (115) and a second carrier (120), - a first magnet arrangement (100), - a second magnet arrangement (105) and - has a guide (110), - wherein the first roller (125) is mounted on the first support (115) so as to be rotatable about a first axis of rotation (140) and the first magnet arrangement (100) is fastened to the first support (115), - wherein the second roller (130) is mounted on the second support (120) so as to be rotatable about a second axis of rotation (160) at a distance from the first roller (125), - wherein the second magnet arrangement (105) is attached to the second carrier (120) at a distance from the first magnet arrangement (100), - wherein the first roller (125) and the second roller (130) are designed to guide the carrier unit (95) displaceably on the guide rail (15), - wherein the guide (110) connects the first support (115) to the second support (120) displaceably along a sliding axis (250), wherein the sliding axis (250) is oriented at an angle (α) inclined obliquely to the second axis of rotation (160) such that upon displacement of the first support (115) and the second support (120) relative to one another along the sliding axis (250), a roller distance (1) of the first axis of rotation (140) to the second axis of rotation (160) can be changed. [2] Conveying device (20) according to claim 1, - wherein the first magnet arrangement (100) is arranged on the first carrier (115) facing the second magnet arrangement (105) and provides a first magnetic field, - wherein the second magnet arrangement (105) is arranged on the second carrier (120) facing the first magnet arrangement (100) and provides a second magnetic field. [3] Conveying device (20) according to one of the preceding claims, - wherein the first support (115) is U-shaped and has a first support section (200), a second support section (205) and a third support section (210), - wherein the first support section (200) and the third support section (210) are arranged on a common side of the second support section (205) and extend away from the second support section (205) in a common direction, - wherein the first roller (125) is rotatably mounted on the first support section (200). [4] Conveying device (20) according to one of the preceding claims, - wherein the second support (120) is U-shaped and has a fourth support section (310), a fifth support section (315) and a sixth support section (320), - wherein the fourth support section (310) and the sixth support section (320) are arranged on a common side of the fifth support section (315) and extend away from the fifth support section (315) in a common direction, - wherein the second roller (130) is rotatably attached to the fourth support section (310). [5] Conveying device (20) according to claim 4, - wherein the first carrier (115) has a first receptacle (230) in the first carrier section (200), - wherein the first receptacle (230) has at least one first receptacle side surface (235) extending along a first direction inclined to the sliding axis (250), - wherein the second carrier (120) engages with the fourth carrier section (310) in the first receptacle (230) and bears against the first receptacle side surface (235) for guiding the first carrier (115) and the second carrier (120). [6] Conveying device (20) according to claim 5, - wherein the first magnet arrangement (100) is arranged on the first support section (200) on a side facing away from the first roller (125), - wherein the second magnet arrangement (105) is arranged on the sixth carrier section (320) of the second carrier (120) facing the first magnet arrangement (100). [7] Conveying device (20) according to one of the preceding claims, - wherein the guide (110) has at least one guide pin (245) and at least one first guide bush (370), - wherein the guide pin (245) extends along the sliding axis (250) and is connected to the first carrier (115), - wherein the first guide bush (370) is connected to the second carrier (120), - wherein the guide pin (245) extends through at least the first guide bushing (370) such that the guide pin (245) guides the second carrier (120) in a movement along the sliding axis (250). [8] Conveying device (20) according to claim 7, - wherein the first carrier (115) has a second receptacle (220) arranged in the second carrier section (205), - wherein the fifth carrier section (315) of the second carrier (120) engages in the second receptacle (220), - wherein the first guide bush (370) is arranged on the fifth support section (315), - wherein the guide pin (245) passes through the second receptacle (220) and the first guide bush (370). [9] Conveying device (20) according to claim 7 or 8, - wherein a displacement of the first carrier (115) and the second carrier (120) relative to one another along the sliding axis (250) is limited by abutment of the fifth carrier section (315) of the second carrier (120) against a first stop surface (270) of the second receptacle (220) in the first carrier (115). [10] Conveying device (20) according to one of the preceding claims, - where the angle (α) is from 1° to 7° inclusive, in particular from 2° to 5° inclusive. [11] Linear transport system (10) - comprising a stationary guide rail (15), a stator module (30) and a conveyor device (20) according to one of the preceding claims, - wherein the guide rail (15) has a first rail running surface (70) and a third rail running surface (80) arranged offset from the first rail running surface (70), - wherein the first roller (125) rests on the first rail running surface (70) and the second roller (130) rests on the third rail running surface (80), - wherein the stator module (30) is arranged at least in sections between the first magnet arrangement (100) and the second magnet arrangement (105) and has a stator tooth arrangement (31) with at least one ferromagnetic stator tooth (32), - wherein the first magnet arrangement (100) is magnetically coupled to at least one of the stator teeth (32) of the stator tooth arrangement (31) and provides a first magnetic force (F1) acting in the direction of the stator module (30), - wherein the second magnet arrangement (105) is magnetically coupled to at least one of the stator teeth (32) of the stator tooth arrangement (31) opposite the first magnet arrangement (100) and provides a second magnetic force (F2) acting in the direction of the stator module (30), - wherein the guide (110) translates the first magnetic force (F1) at least partially into a first contact force (FA1) and the first carrier (115) presses the first roller (125) against the first rail running surface (70) with the first contact force (FA1), - wherein the guide (110) translates the second magnetic force (F2) at least partially into a second contact force (FA2) and the second carrier (120) presses the second roller (130) against the third rail running surface (80) with the second contact force (FA2). [12] Method for operating a linear transport system (10) according to claim 11, - wherein the first magnet arrangement (100) is magnetically coupled to at least one of the stator teeth (32) of the stator tooth arrangement (31) and a first magnetic force (F1) attracts the first magnet arrangement (100) in the direction of the stator module (30), - wherein the second magnet arrangement (105) is magnetically coupled to at least one of the stator teeth (32) of the stator tooth arrangement (31) and a second magnetic force (F2) attracts the second magnet arrangement (105) in the direction of the stator module (30), - wherein the guide (110) translates the first magnetic force (F1) into the first contact force (FA1), which acts inclined, in particular perpendicular, to the first axis of rotation (140), and the second magnetic force (F2) into the second contact force (FA2), which acts inclined, in particular perpendicular, to the first axis of rotation (140), - wherein the first carrier (115) transmits the first contact force (FA1) to the first roller (125) and presses the first roller (125) against the guide rail (15) with the first contact force (FA1), - wherein the second carrier (120) transmits the second contact pressure force (FA2) to the second roller (130) and presses the second roller (130) against the guide rail (15) with the second contact pressure force (FA2).

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