Roller flange, external rotor motor and conveyor roller

Abstract

A drum flange (100) for mounting on an end face of a cylindrical or drum-shaped drum (200) comprises a substantially annular plastic body (110), a bearing (120) and a metal ring (130) surrounding the bearing (120). The ring (130) and the bearing (120) are at least partially embedded in the plastic body (110). The ring (130) has elements for force transmission, the positions of which are distributed over the plastic body (110) or the surface thereof. The element for force transmission comprises at least one locking device (150a, 150b) for transmitting an axial force between the drum (200) and the drum flange (100), and at least one pin (160a, 160b, 160c, 160d) for transmitting a radial force between the drum (200) and the drum flange (100).

Description

Technical Field

[0001] This disclosure relates to roller flanges, external rotor motors having such roller flanges, and conveyor rollers having such roller flanges. Background Technology

[0002] Roller flanges are known in themselves and are, for example, mounted on the end face of cylindrical or drum-shaped rollers. These rollers are, for example, rotor rollers of external rotor motors or rollers of driven or non-driven conveyors.

[0003] Such conveyor rollers are known and commonly used in various types of conveyor systems, such as warehouses, production facilities, and even distribution systems. These conveyor systems are used for conveying and sorting loads. In a conveyor system with this type of conveyor roller (roller conveyor), the conveyed goods are transported by individual conveyor rollers that are in temporary contact with the conveyed goods. Besides electrically driven, motorized conveyor rollers, conveyor systems can also have idle, non-driven conveyor rollers or conveyor rollers driven by motorized conveyor rollers via belts.

[0004] This type of roller typically consists of a tubular outer shell and two roller bases fixed at both ends of the tubular roller shell, wherein roller shafts are fixed or rotatably mounted, for example, by roller bearings. This is crucial for achieving a tight fit between the roller bases within the roller shell to prevent inward or outward axial displacement and to prevent rotational movement between the roller shell and the roller bases. However, achieving this permanent tight fit between the roller bases within the roller shell is difficult. In conventional implementations, if the roller shell and roller bases are made of different materials, for example, the roller shell is made of metal and the roller bases are made of plastic, the connection between the two will quickly loosen due to the different thermal expansion of the materials.

[0005] Specifically, under heavy roller loads in conventional implementations, bending between the roller housing and roller base can loosen the connection between them, causing relative rotation between the roller base and roller housing. Once this relative rotation occurs, it becomes increasingly stronger during continuous operation. On the other hand, metal roller bases offer high quality and increase the roller's inertia. Utility Model Content

[0006] One objective to be achieved is to detail an improved connection concept for conveyor rollers that eliminates these drawbacks and problems of known rollers.

[0007] This objective is achieved through the features of the independent claims. The corresponding dependent claims specify advantageous embodiments that offer convenience and are important aspects of the invention.

[0008] The improved connection concept makes it possible to create, for example, rollers in which the roller base is absolutely and permanently anchored in the roller housing in a simple manufacturing manner for both axial displacement and relative rotation, so that dimensional tolerances can be kept within economically acceptable limits even under high loads and temperature fluctuations.

[0009] In one embodiment of the improved connection concept, a roller flange is configured to be mounted on the end face of a cylindrical or drum-shaped roller, wherein the roller flange includes a substantially annular plastic body, a bearing, and a metal ring surrounding the bearing. The ring and bearing are at least partially embedded in the plastic body. The ring has elements for force transmission, the elements being distributed on the plastic body or its surface (e.g., a circumferential surface). The elements for force transmission include one or more locking devices for transmitting axial force between the roller and the roller flange, such as for axially locking a first roller to the roller flange, and one or more pins for transmitting radial force, or vice versa, such as torque, between the first roller and the roller flange.

[0010] Using metal components for force transmission improves the durability and resistance of the roller flange to both axial displacement and relative rotation. By embedding relatively lightweight metal rings within the plastic body of the roller flange, the mass and inertia of the roller flange increase only slightly.

[0011] In various embodiments, at least one pin of the roller flange is arranged to form a positive connection with at least one corresponding recess in the roller. This allows for the stable transmission of force or torque.

[0012] For example, the ring, bearing, and plastic body are arranged coaxially with the rotation axis of the first roller.

[0013] In various implementations, the ring is attached to the bearing. This allows for simple assembly. It can also be supported by a ring having at least one resilient attachment device (e.g., a leg) that contacts the bearing. This resilient attachment device is used, for example, to facilitate the installation of the ring onto the bearing.

[0014] In various embodiments, the roller flange includes at least one pin-shaped fixing element for securing other rollers and a shoulder for preventing axial displacement of the other rollers.

[0015] In some implementations, the roller flange includes a torque transmitter, such as a pulley or gear, suitable for transmitting torque.

[0016] According to the improved connection concept, the drum flange according to one of the described embodiments can be used in the drums of external rotor motors and / or conveyors.

[0017] In one embodiment of an external rotor motor with a roller flange according to an improved connection concept, the external rotor motor includes a roller, which is designed as, for example, a rotor or an external rotor of an external rotor motor. The roller flange is mounted on the end face of the roller of the external rotor motor. The roller is electrically driven, specifically by the external rotor motor. At least one pin of the roller flange transmits torque from the roller to the roller flange.

[0018] In one embodiment of a non-electric conveyor roller with a roller flange according to an improved connection concept, in an implementation with a torque transmitter, the conveyor roller includes a roller. The roller flange is mounted on the end face of the roller. The roller flange is configured to be driven by an external drive (such as an external rotor motor) by means of a torque transmitter (e.g., by means of a belt or gear attached to the torque transmitter). At least one pin of the roller flange transmits torque from the roller flange to the roller.

[0019] In one embodiment of an electric conveyor roller with a roller flange according to an improved connection concept, the conveyor roller includes an external rotor motor, a first roller (designed as, for example, a rotor or the external rotor of the external rotor motor), and a second roller (arranged concentrically with the first roller). The roller flange is mounted on the end face of the first roller of the external rotor motor. Furthermore, the first roller is driven by the external rotor motor. At least one pin of the roller flange transmits torque from the first roller to the roller flange. The roller flange transmits the torque of the first roller to the second roller.

[0020] In a further development of this electric conveyor roller, the roller flange includes at least one pin-shaped fixing element for securing the second roller and a shoulder for preventing axial displacement of the second roller.

[0021] In an alternative or additional embodiment of this electric conveyor roller, the roller flange includes a torque transmitter (such as a pulley or gear) as described above, configured to transmit torque. The conveyor roller is configured to transmit torque to at least one or more non-electric conveyor rollers of the roller conveyor via a torque transmitter on the roller flange (e.g., via a belt or gear attached to the torque transmitter).

[0022] For example, this makes it possible to realize roller conveyors with several electric conveyor rollers and non-electric conveyor rollers. Attached Figure Description

[0023] The improved connection concept is explained in more detail below using examples of embodiments with reference to the accompanying drawings. Similar elements or elements having the same function are indicated by the same reference numerals. Therefore, it is unnecessary to explain the individual elements again. The examples of embodiments are used to explain, but do not describe, the improved connection concept.

[0024] The figure shows a simplified version:

[0025] Figure 1 A cross-sectional view of an exemplary embodiment of a roller flange mounted on the end face of a roller is shown;

[0026] Figure 2a An exemplary embodiment of the roller flange is shown;

[0027] Figure 2b An exemplary embodiment of a non-overmolded roller flange is shown;

[0028] Figure 2c An exemplary embodiment of the metal ring of the roller flange is shown;

[0029] Figure 3 An exploded view of a roller with a roller flange is shown;

[0030] Figure 4 An exploded view of an exemplary embodiment with a roller flange and a torque transmitter is shown;

[0031] Figure 5a Details of an exemplary embodiment of a metal ring for a roller flange having a torque transmitter are shown;

[0032] Figure 5b A cross-sectional view of an exemplary embodiment of a roller flange with a torque transmitter is shown;

[0033] Figure 6 An exemplary embodiment of an external rotor motor with a drum flange is shown;

[0034] Figure 7 An exemplary embodiment of a roller conveyor with an external rotor motor and a non-electric conveyor roller is shown;

[0035] Figure 8 An exemplary embodiment of an electric conveyor drum with an external rotor motor is shown;

[0036] Figure 9 Exemplary embodiments of roller conveyors with electrically driven and non-electrically driven conveyor rollers are shown; and

[0037] Figure 10 An exemplary embodiment of a non-electric conveyor roller is shown. Detailed Implementation

[0038] Figure 1 An embodiment of a roller flange 100 for mounting on the end face of a cylindrical or cylindrical roller 200 is shown. The roller flange 100 includes a substantially annular plastic body 110, a bearing 120, and a metal ring 130 surrounding the bearing 120. Only a portion of the metal ring 130 is visible here.

[0039] Figures 2a to 2c The roller flange 100, based on the improved connection concept, is shown in various views. Figure 2a A roller flange 100 is shown, which includes a plastic body 110 and a bearing 120, through which a metal ring 130 is molded (only in the case of a roller flange 100). Figure 2b and Figure 2c (See in the middle).

[0040] The roller flange 100 has elements for force transmission, which are located on the plastic body 110 or its surface (especially the circumferential surface) and are part of the metal ring 130. Figure 2b and Figure 2c Embodiments of such elements for force transmission are shown. On one hand, the metal ring 130 includes one or more locking devices 150a, 150b for transmitting axial force between the roller 200 and the roller flange 110. On the other hand, the ring 130 includes one or more pins 160a, 160b, 160c, 160d for transmitting radial force between the roller 200 and the roller flange 110.

[0041] The force transmission element protrudes from the outer surface of the plastic body 110 after the metal ring 130 is overmolded.

[0042] For example, the metal ring 130 is pushed onto the bearing 120 by one or more resilient attachment devices 170. This allows the ring 130 to be attached to the bearing 120 before being overmolded with plastic. For example, the attachment device may be shaped like a leg to hold the ring centered on the outer ring of the bearing.

[0043] Figure 3 An exploded view of the roller flange 100 mounted on the end face of the roller 200 is shown. The metal ring 130 includes locking devices 150a and 150b for transmitting axial force between the roller 200 and the roller flange 110. After overmolding, the metal ring 130 is essentially located within the plastic overmolded part. Only the elements for force transmission protrude beyond this element.

[0044] exist Figure 3 In one embodiment, the locking devices 150a and 150b are shaped like brackets and have a locking device 153 for locking into the opening or groove 157 of the roller, particularly in the form of a hook.

[0045] exist Figure 3 In one embodiment, one or more pins 160a, 160b, 160c, 160d of the roller flange form a positive connection with a corresponding recess 220a of the roller 200. This connection is used to transmit radial force between the roller flange 100 and the roller 200.

[0046] Figure 4 A roller flange 100 with a torque transmitter 230 is shown according to an improved connection concept in another embodiment. The torque transmitter 230 is implemented, for example, as a pulley, but can also be implemented by gears, etc. The torque transmitter 230 is part of the plastic body 110 of the roller flange 100. The torque transmitter 230 can also be formed by the same overmolding process of embedding the ring 130 and bearing 120 into the plastic body. Thus, only a single overmolding process is required. The torque transmitter 230 is made of the same plastic as the plastic body.

[0047] Figure 5a An embodiment of a ring 130 for a roller flange 100 having a torque transmitter 230 is shown. (Compared to...) Figure 2c Compared to the previous implementation, the resilient attachment devices 160a to 160h extend to increase the distance between the bearing 120 and the roller 200. Therefore, the bearing 120 is located in the region below the torque transmitter 230 and can better dissipate the forces generated in that region.

[0048] Figure 5b A cross-section of this embodiment is shown. The plastic body 110 includes a cross-section shaped, for example, a pulley-shaped torque transmitter 230. For example, the torque transmitter can transmit force to one or more V-belts.

[0049] Figure 6 The application of a roller flange 100 according to an improved connection concept in an external rotor motor 300 is illustrated. In a conventional design, the external rotor motor 300 includes a rigid shaft 240 having a stator 350 and a rotor 360, the rotor rotating about the stator. The rotor 360 is a cylindrical roller, or non-rotatably connected to such a roller. Therefore, in the sense of the improved connection concept, the rotor 360 represents a first roller 200. This allows the roller flange 100 to be connected at its end face to the rotor 200 of the external rotor motor, which is designed as the first roller. The torque of the electrically driven rotor 200 is transmitted from the rotor or roller 200 to the plastic body 110 of the roller flange 100 via one or more pins 160a, 160b of the ring of the roller flange.

[0050] In addition, locking devices 150a and 150b (in) Figure 6 (Not visible in the middle) It resists axial force and loosening of the drum flange 100 and the rotor 200 to fix the connection between the drum flange 100 and the rotor 200.

[0051] By using a roller flange 100 with a torque transmitter 230 on the outer rotor motor 300, the outer rotor motor 300 can drive other non-electric conveyor rollers 310a, 310b in the roller conveyor system 330 via one or more belts 340a, 340b (see Figure 7 ).

[0052] In another embodiment based on the improved connection concept, the external rotor motor 300 is part of the electric conveyor roller 320. Figure 8 This embodiment is illustrated. An electric conveyor roller 320 with a roller flange 100 includes an outer rotor motor 300 and a first roller 200, particularly as the outer rotor of the rotor 360 or the outer rotor motor 300, wherein the roller flange is mounted on the end face of the first roller 200 of the outer rotor motor, and the first roller 200 is driven by the outer rotor motor. The torque of the first roller 200 is transmitted from the first roller 200 to the roller flange 100 via one or more pins 160a, 160b, 160c, 160d of the roller flange.

[0053] The electric conveyor roller 320 also includes a second roller 250 that contacts the product to be conveyed. This second roller 250 is also connected to the roller flange 100. For this purpose, the roller flange has a shoulder 190 with a stop. The second roller 250 is pushed onto the shoulder 190 and contacts the stop to prevent axial displacement of the second roller. The second roller is concentric with the first roller 200 and rotatably fixed to the roller flange, such that the torque of the roller flange 100 can be transmitted to the second roller 250. In this embodiment, the second roller 250 at least partially surrounds the first roller 200.

[0054] In another embodiment, the roller flange 100 has at least one pin-shaped retaining element 180 for securing the second roller 250 (see [link]). Figure 3 This additionally secures the second roller 250 to prevent radial rotation relative to the roller flange. Figure 3 The second roller 250 is not shown in the image, otherwise it would obscure the details of the elements below.

[0055] In another embodiment, the electric conveyor roller 320 is equipped with a roller flange having a torque transmitter 230. Other non-electric conveyor rollers 310a, 310b in the roller conveyor system 330 can be driven by the electric conveyor roller 320 via one or more belts 340a, 340b (see [link to relevant documentation]). Figure 9 ).

[0056] In another embodiment, the roller flange 100 can also be used for a non-electric conveyor roller 310a, such as... Figure 10 As shown. Except for the missing external rotor motor, the structure of the non-electric conveyor roller is similar to... Figure 6The same applies. The non-electric conveyor roller 310a is driven, for example, by an external rotor motor 300 or the electric conveyor roller 320 via belts 340a, 340b through a torque transmitter 230. Torque is transmitted from the roller flange 100 to the first roller 200 via the roller flange and one or more pins 160a, 160b of the roller flange.

[0057] In another embodiment, the roller flange 100 has one or more locking devices 150a, 150b for transmitting axial force between the first roller 200 and the roller flange 100 to axially lock the first roller to the roller flange 100.

Claims

1. A roller flange (100) for mounting on the end face of a cylindrical or drum-shaped roller (200), characterized in that, The roller flange (100) includes - Essentially a ring-shaped plastic body (110). - Bearing (120); and - A metal ring (130) surrounding the bearing (120); in - The ring (130) and the bearing (120) are at least partially embedded in the plastic body (110); - The ring (130) has elements for force transmission, the elements being positioned on the plastic body (110) or its circumferential surface; as well as - The element used for force transmission includes - At least one locking device (150a, 150b) for axially locking the roller (200) to the roller flange (100); and - At least one pin (160a, 160b, 160c, 160d) for transmitting torque between the roller (200) and the roller flange (100).

2. The roller flange (100) according to claim 1, characterized in that, The at least one pin (160a, 160b, 160c, 160d) of the roller flange is arranged to form a positive connection with at least one corresponding recess (220a, 220b) of the roller (200).

3. The roller flange (100) according to claim 1, characterized in that, The ring (130), the bearing (120) and the plastic body (110) are arranged to be coaxial with the rotation axis of the roller (200).

4. The roller flange (100) according to claim 1, characterized in that, The ring (130) slides onto the bearing (120).

5. The roller flange (100) according to claim 4, characterized in that, The ring (130) includes at least one resilient attachment device (170) that contacts the bearing (120).

6. The roller flange (100) according to claim 5, characterized in that, The at least one elastic attachment device (170) is a support leg.

7. The roller flange (100) according to claim 1, characterized in that, The roller flange (100) includes at least one pin-shaped fixing element (180) for fixing the second roller (250) and a shoulder (190) for preventing axial displacement of the second roller (250).

8. The roller flange (100) according to claim 1, characterized in that, The roller flange (100) includes a torque transmitter (230) configured to transmit torque.

9. The roller flange (100) according to claim 8, characterized in that, The torque transmitter (230) is a pulley or a gear.

10. An external rotor motor (300) having a drum flange (100) according to any one of claims 1 to 9, characterized in that, Including the roller (200), the roller (200) is designed as the outer rotor of the rotor (360) or the outer rotor motor (300), wherein - The roller flange (100) is mounted on the end face of the roller (200) of the external rotor motor (300); - The roller (200) is electrically driven; and - The at least one pin (160a, 160b, 160c, 160d) of the roller flange transmits torque from the roller (200) to the roller flange (100).

11. The external rotor motor (300) of the drum flange (100) according to claim 10, characterized in that: - The roller flange (100) includes a torque transmitter (230) suitable for transmitting torque; and - The conveyor roller is configured to transmit torque to at least one non-electric conveyor roller (310a, 310b) of the roller conveyor (330) by means of the torque transmitter (230).

12. The external rotor motor (300) of the drum flange (100) according to claim 11, characterized in that, The torque transmitter (230) is a pulley or a gear.

13. The external rotor motor (300) of the drum flange (100) according to claim 11, characterized in that, The conveyor rollers transmit torque via belts (340a, 340b) or gears attached to the torque transmitter (230).

14. A non-electric conveyor roller (310a, 310b) having a roller flange (100) according to claim 8, characterized in that, The conveyor rollers include rollers (200), wherein - The roller flange (100) is mounted on the end face of the roller (200); - The roller flange (100) is arranged to be driven by an external driver via the torque transmitter (230); and - The at least one pin (160a, 160b, 160c, 160d) of the roller flange transmits torque from the roller flange (100) to the roller (200).

15. The non-electric conveyor rollers (310a, 310b) according to claim 14, characterized in that, The roller flange (100) is configured to be driven by an external rotor motor (300).

16. The non-electric conveyor rollers (310a, 310b) according to claim 14, characterized in that, The roller flange (100) is configured to be driven by a belt (340a, 340b) or gear attached to the torque transmitter (230).

17. An electric conveyor drum (320) having a drum flange (100) according to any one of claims 1 to 9, characterized in that, The conveyor roller includes - External rotor motor (300); - A roller (200), said roller (200) being designed as the rotor (360) or the outer rotor of said outer rotor motor (300); and - A second roller (250), which is concentrically arranged with the roller (200); in - The roller flange (100) is mounted on the end face of the roller (200) of the external rotor motor (300); - The roller (200) is driven by the outer rotor motor; - The at least one pin (160a, 160b, 160c, 160d) of the roller flange transmits torque from the roller (200) to the roller flange (100); and - The roller flange (100) transmits the torque of the roller (200) to the second roller (250).

18. The electric conveyor roller (320) according to claim 17, characterized in that, The roller flange (100) includes at least one pin-shaped fixing element (180) for fixing the second roller (250) and a shoulder (190) for preventing axial displacement of the second roller (250).

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