WO2019238830A1

WO2019238830A1 - Transport roller

Info

Publication number: WO2019238830A1
Application number: PCT/EP2019/065519
Authority: WO
Inventors: Marcus Dörr; Fabian FISCHER; Denis MENZER; Werner Schiller
Original assignee: Interroll Holding Ag
Priority date: 2018-06-13
Filing date: 2019-06-13
Publication date: 2019-12-19
Also published as: DE102018004724A1

Abstract

The invention relates to a transport roller (1) for a conveying apparatus, in particular for conveying pallets and/or containers, having a roller body (8) and a drive head (4) which is inserted into a free end of the roller body (8) and has a fastening piece (6), wherein the drive head (4) is fastened by the fastening piece (6) thereof to the roller body (8) in a rotationally fixed manner in the circumferential direction (Um) and in a translationally fixed manner in the axial direction (Ax) by means of an interlocking connection using a connecting body (2), and the connecting body (2) passes in a radial direction (Ra) through all of the roller body (8) and at least some of the fastening piece (6), and the connecting body (2) can be inserted from the outside in the radial direction (Ra).

Description

conveyor roller

description

The invention relates to a conveyor roller for a pallet conveyor for transporting goods such as pallets and / or containers.

The conveyor roller of this type is used, in particular, to transport goods such as pallets and / or containers by means of a conveyor device. Several conveyor pipes are arranged one behind the other transversely to the transport direction, some or all of which are designed as drive rollers. For example, when the conveyor roller is used in a belt conveyor, one of its end rollers is designed as a drive roller, with a conveyor belt wrapping around the drive roller and the other end roller. The drive rollers are usually driven by a tangential chain drive system or a double chain drive system. In the tangential chain drive system, all drive rollers are driven by a single drive chain, a drive force of a drive motor being transmitted from the drive chain to a sprocket with a single-row sprocket provided at a free end of the respective drive roller. Bel the double chain drive system, a double sprocket with a two-row sprocket is provided on the respective drive roller and two, usually adjacent, drive rollers are connected by means of chain circles for transmitting the driving force. The respective sprockets are usually attached to the drive rollers by welding, which is a time-consuming and costly manufacturing method. In the case of non-driven conveyor rollers, so-called rollers, a roller base is provided at each of its two free ends, which receives a bearing for supporting a roller axis. In the drive roller or rollers, a roller base is usually provided on the other free end opposite the chain wheel. Against this background, it is an object of the present invention to provide an improved conveyor roller and a method for providing the improved conveyor roller, which in particular reduces the time and / or financial expenditure involved in production.

The object is achieved by the subject matter of the respective independent patent claims.

One aspect relates to a conveying roller for a conveying device, in particular for conveying pallets and / or containers, with a roller body and a drive head which is inserted into a free end of the roller body and has a fastening socket. The drive head is fastened with its fastening socket by means of a non-positive or positive connection using a, in particular separately formed, connecting body to the roller body in the axial direction and non-rotatably in the circumferential direction. The roller body and the attachment piece are at least partially completely penetrated in the radial direction by the connecting body and the connecting body can be inserted from the outside in the radial direction.

An advantage of the present invention is a simplified production of the conveyor roller without complex welding work, which in turn would require time-consuming and therefore cost-intensive constructional and production-related preparatory and follow-up measures.

Another advantage of the present invention is that with the configuration according to the invention, a form-fitting attachment of the drive head to the roller body is achieved in a simple manner.

A positive connection or fastening often also has a force-locking component, for example by tightening a screw or shrinking after hot riveting; In the context of the present invention, however, the proportion of adhesion is neglected when one speaks of positive locking. A conveying device in the sense of the present invention can be, for example, a pallet conveyor or a belt conveyor.

A roller body can be designed, for example, as a hollow cylindrical tube, which can also be referred to as a roller jacket.

A roller base can in particular be used to close the roller body at the free end opposite the drive head. The roller base can be essentially cylindrical.

A drive head can be designed as a sprocket head or as a double sprocket head.

The terms “outside” or “inside” and the like used in the following mean in the sense of the present invention that a, in particular idealized or imagined, center point is an innermost point. An outer area in relation to this is an, in particular idealized or imagined, peripheral area. A point or area which is designated as being further outwards than another point or area is therefore located further away in the radial direction from the center point in the direction of the peripheral area than the other point or area.

An axial direction or an axial direction is a direction in an extension of a length of a component. For example, in the case of a hollow cylindrical roller body, the axial direction is oriented approximately parallel to a surface line or the longitudinal axis of the roller body.

A radial direction or radial direction is oriented perpendicular to the axial direction. For example, in the case of a hollow cylindrical roller body, the radial direction coincides with the radius of the roller body. In other words, the radial direction of the hollow cylindrical roller body runs in the direction of its wall thickness. Accordingly, a circumferential direction is a direction in an extent of the circumference of the component.

The connecting body is preferably designed as a rivet, a pin and / or as a screw.

The connecting body can preferably be designed as a blind rivet. With this configuration, a reliable fastening of the fastening socket of the drive head is realized in a simple manner.

As an alternative or in addition thereto, the connecting body can advantageously be designed as a dowel pin or notch pin.

A head or collar of the connecting body is preferably completely accommodated in an end section of a receptacle for the connecting body, the end section being formed on the outside in the radial direction. For example, the end section of the receptacle can be designed as a countersink or stepped bore. With this configuration, a smooth surface of the roller body is ensured, in particular when the conveyor roller is used in a belt conveyor, and the belt is thus protected from damage.

For example, the material of the roller body can at least partially contain steel, plastic, aluminum and / or other plastically deformable materials. The general term aluminum includes, in particular high-strength, aluminum alloys.

Several positive connections are preferably provided. With this configuration, a torsional strength of the fastening of the fastening piece with the roller body can be increased. This also increases the sliding resistance of the fastening of the fastening piece to the roller body. The one or more receptacles for the connecting body or the connecting bodies can be inserted into the fastening piece and into the roller body if the fastening piece is inserted into the roll body or if the fastening piece is separated from the roller body.

In particular, the form-fitting connections can be made uniformly distributed in the circumferential direction.

Alternatively, the form-fitting connections can be designed to be unevenly distributed in the circumferential direction. Depending on the application and / or constructional or other requirements, an adaptable fastening of the fastening piece to the roller body is thus realized.

A roller base is preferably arranged at another free end of the roller body.

More preferably, the roller base is formed with an attachment piece which is identical to the drive head and is attached to the other free end of the roller body in an identical manner to the drive head. With this configuration, the manufacture of a roller (non-driven conveyor roller) with the above-mentioned advantages is easily realized.

A chain wheel or a belt pulley or a bead (annular circumferential groove for receiving a round belt) is preferably formed in one piece with the drive head. With this configuration, a drive roller with the advantages mentioned above is realized in a simple manner. Furthermore, a torsional resistance of the chain wheel in relation to the drive head is thus realized in a simple manner. In addition, storage is simplified by means of the reduced number of parts.

The drive head with the chain wheel integrally formed thereon can be formed without cutting, for example cast, 3-D printed or formed, cutting be shaped, for example from the full milled / turned or manufactured by means of "rapid manufacturing"("rapidmanufacturing"). As an alternative to this, a drive head that is initially manufactured separately can be glued or riveted to a chain wheel that is initially manufactured separately and can thus be formed in one piece. One or more interlocking projections and recesses can be provided on both parts to ensure the rotationally fixed fastening of the two parts in the assembled state.

Alternatively, a chain wheel is preferably detachably attached to the drive head. With this configuration, the sprocket can be replaced when it is worn, thus reducing the costs involved. It is thus also conceivable to change a number of teeth on the chain wheel and thus the speed of the drive roller and to adapt it in a simple manner to different requirements without having to replace the complete drive roller.

The sprocket can, for example, be detachably fastened to the drive head in the circumferential direction in a rotationally fixed manner and non-slip in the axial direction. Alternatively, the sprocket and drive head can be connected to one another in a form-locking manner by means of one or more projections and recesses which ripen into one another in the assembled state, and one or more retaining screws can be provided as a releasable safeguard against axial displacement, which hold the sprocket with connect the drive head.

In particular, a stop ring for the roller body can be formed on the attachment piece. With this configuration, correct insertion of the drive head and / or the roller base with the fastening piece into the roller body is ensured in a simple manner. Furthermore, the insertion of the one or more receptacles for the connecting body or bodies and / or the introduction of the one or more connecting bodies into the housings can be facilitated. For example, the receptacles in the fastening connection can be positioned with sufficient accuracy in the axial direction in relation to the receptacles in the roller body according to a known, respectively constant distance in the axial direction between the stop ring and the respective receptacles, if the drive head and / or the roller base is inserted in the roller body ,

Alternatively or additionally, a positioning device can be provided for positioning the drive head and / or the roller base in the roller body. For example, an optical positioning device such as a radiographic test ("X-ray test") can be provided, by means of which the position of the receptacles in the fastening socket can be determined with the drive head and / or the roller base inserted in the roller body.

The interior of the roller body can be sealed against an external environment of the roller body by means of a sealing element. The drive head and / or the roller base can advantageously be sealed off from the roller body by means of a sealing element. The drive head and / or the roller base - in particular a bearing arranged therein, in which a roller axle is mounted - can be further advantageously sealed against the roller axle by means of a sealing element.

One aspect of the invention relates to a method for providing a conveyor roller with one or more of the features described above, which comprises the steps:

- Insert the drive head in one free end of the roller body and

- Attach the drive head to the roller body using

- Introducing recordings for the connecting body in the reel body and in the mounting piece and

- Introducing the connecting body from the outside in the radial direction.

The advantages of the method for providing the conveyor roller result analogously from the features mentioned and their advantages to the conveyor roller mentioned above. The roller base is preferably formed with a fastening socket which is identical to the drive head and is fastened identically to the drive head at the other free end of the roller body.

The conveyor roller can be subjected to a surface treatment after the attachment pieces have been attached. This means that, for example, anti-rust treatment can be carried out without the need for post-treatment of weld seams.

Furthermore, the conveyor roller can be equipped with a bearing for a roller axis and a roller axis after attaching the mounting piece.

Furthermore, a seal can be provided between the drive head and / or the roller base and the roller body and / or between the bearing and the roller axis during or after the attachment of the attachment piece.

Since all components of the conveyor roller are essentially assembled mechanically, in particular without time-consuming welding work, including time-consuming and labor-intensive preparation and post-processing, a manufacturing effort for the conveyor roller can be reduced. For example, an external electroplating process can be dispensed with, since galvanized pipes can already be used for the roller body because the welding work is no longer necessary.

An embodiment of the conveyor roller according to the invention is explained in more detail below with reference to drawings. It goes without saying that the present invention is not restricted to the exemplary embodiment described below, and that individual features thereof can be combined to form further exemplary embodiments.

Show it: Fifl- 1 shows a cross section through the connecting body in a front view of the conveyor roller according to an embodiment of the invention; and FIG. 2 shows a longitudinal section through the conveyor roller according to FIG. 1 in one

Top view.

The axial direction Ax, the circumferential direction Um and the radial direction Ra are shown in the figures by means of directional arrows, in particular in the manner of a coordinate system. Although the direction arrows only point in one direction, the direction information also contains a respective opposite direction. Two radial directions Ra are given as examples; this is only intended to give an impression of the many possible radial directions Ra.

In the respective top view or side view, the circumferential direction Um coincides with one of the radial directions Ra or is aligned parallel to it and is therefore not shown separately.

A conveyor roller 1 shown in FIG. 1 according to an embodiment of the invention is shown in a cross-section A-A through a plurality of connecting bodies 2 in a front view, the cross-section following the section A-A shown in FIG. 2.

A drive head 4 with a fastening piece 6 is inserted into this roller body 8 at a free end of a roller body 8.

The connecting bodies 2 are designed as blind rivets and are introduced into receptacles 10 from the outside in the radial direction Ra and are shown in a still unlet condition. In this exemplary embodiment, a collar 12 of the rivets protrudes over a surface of the roller body 8, but can be completely accommodated in a depression (not shown here).

In this exemplary embodiment, each of the receptacles 10 completely penetrates the roller body 8 in the axial direction Ax. Also completely in the axial direction Ax penetrated is a mounting piece 6 of a drive head 4, which is inserted into the roller body 8.

The drive head 4 has a receiving bore 14 for a bearing (not shown here) and a through bore 16 for a roller axis (not shown here).

The longitudinal section B-B shown in FIG. 2 through the conveyor roller 1 according to FIG. 1 follows the section B-B shown in FIG. 1. The conveyor roller 1 is designed as a drive roller, the length of which is shown shortened in the axial direction Ax.

On the drive head 4, a chain wheel 18 is formed in one piece at its one free end. In the other end area of the drive head 4, a stop ring 20 is also formed. The drive head 4 is inserted into the roller body 8 until it comes into contact with the roller body 8 with the stop ring 20.

At another free end of the roller body 8, a roller base 22 is provided. The roller base 22 is designed similarly to the drive head 4 with a stop ring 20. Similar to the drive head 4, the roiler base 22 has a receiving bore 14 for a bearing (not shown here) and a through bore 16 for a roller axis (not shown here). The roller axis can be continuous or as an axle stub.

When the sprocket 18 is inserted into the roller body 8, there is usually only a slight frictional connection due to a sliding fit formed between the sprocket 18 or the attachment piece 6 and the roller body 8. The blind riveting caused by force and the resulting clamping is low. The main force transmission takes place via the shear force on the rivet neck through positive locking. LIST OF REFERENCE NUMBERS

1 conveyor roller

2 connecting bodies

4 drive head

6 mounting sockets

8 reel bodies

10 holder for connecting body

12 collars

14 Location hole for bearings

16 through hole for roller axis

18 sprocket

20 stop ring

22 roller base

Ax axial direction

Ra radial direction

To circumferential direction

Claims

claims

1. conveyor roller (1) for a conveyor, in particular for conveying

Pallets and / or containers, with

a roller body (8) and

a drive head (4) inserted into a free end of the roller body (8) and having a fastening piece (6),

wherein the drive head (4) with its attachment piece (6) by means of a positive connection using a connecting body (2) on the roller body (8) in the axial direction (Ax) non-slip and in the circumferential direction (Um) is rotationally fixed and

wherein the roller body (8) is completely penetrated by the connecting body (2) and the fastening piece (6) is at least partially penetrated in the radial direction (Ra) and the connecting body (2) can be inserted from the outside in the radial direction (Ra).

2. Conveyor roller (1) according to claim 1, wherein the connecting body (2) is designed as a rivet, a pin and / or as a screw.

3. conveyor roller (1) according to claim 1 or 2, wherein the connecting body (2) is designed as a blind rivet.

4. Conveyor roller (1) according to one of the preceding claims, wherein a head or collar (12) of the connecting body (2) in an outer radial section (Ra) formed end portion of a receptacle (10) for the connecting body (2) is completely accommodated.

5. conveyor roller (1) according to any one of the preceding claims, wherein a plurality of positive connections are provided.

6. conveyor roller (1) according to any one of the preceding claims, wherein at another free end of the roller body (8) a roller base (22) is arranged.

7. conveyor roller (1) according to claim 6, wherein the roller base (22) with an identical to the drive head (4) formed attachment piece (6) and identical to the drive head (4) at the other free end of the roller body (8) is attached.

8. conveyor roller (1) according to any one of the preceding claims, wherein a sprocket (18) with the drive head (4) is integrally formed or is releasably attached to the drive head (4).

9. Conveyor roller (1) according to one of the preceding claims, wherein a stop ring (20) for the roller body (8) is formed on the fastening piece (6).

10. Method for providing a conveyor roller (1) according to one of the previous

Claims comprising the steps:

- Inserting the drive head (4) into one free end of the roller body (8)

- Attach the drive head (4) to the roller body (8) by means of

- Introducing receptacles (10) for the connecting body (2) in the roller body (8) and in the mounting piece (6) and

- Introducing the connecting body (2) from the outside in the radial direction (Ra).