Pressing device having a toothed belt

Abstract

A pressing device (1) for pressing finishing tape against circumferential surfaces (2) of substantially cylindrical work piece sections (3) in a finishing process includes at least one elastically bendable pressing element (5) that is substantially inelastic in the longitudinal direction. A support element (6) has two bearings (7), which are arranged at a distance from each other. The pressing element (5) is fastened to the two bearings, and the two bearings are arranged in such a manner that finishing tape is pressed against a circumferential surface (2) by the pressing element (5) across a contact angle (4) using a pressing force. The pressing device (1) is adjustable in order to process work piece sections (3) of different diameters. The pressing element may be a toothed belt (5) having tooth-like ribs (8), and the toothed belt (5) is interlockingly mounted in the support element (6) using the tooth-like ribs (8).

Claims

1. A pressing device (1) for pressing finishing tape against circumferential surfaces (2) of substantially cylindrical work piece sections (3) in a finishing process, the pressing device (1) comprising: at least one elastically bendable pressing element (5) that is substantially inelastic in a longitudinal direction; a support element (6) having two bearings (7) arranged at a distance from each other, wherein the at least on elastically bendable pressing element (5) is fastened to the two bearings, wherein the two bearings are arranged at a distance from each other in such a manner that finishing tape is pressed against a circumferential surface (2) by the pressing element (5) across a contact angle (4) using a pressing force, wherein the pressing device (1) is adjustable in order to process work piece sections (3) of different diameters, wherein the pressing element is a toothed belt (5) having tooth-like ribs (8), and wherein said toothed belt (5) is interlockingly mounted in the support element (6) using the tooth-like ribs (8), the tooth-like ribs (8) formed in end regions of the toothed belt (5) being used to fasten the toothed belt (5) interlockingly to the support element (6) in corresponding recesses (11) formed in the support element.

2. The pressing device (1) according to claim 1, wherein the tooth-like ribs (8) of the toothed belt (5) are arranged on a side of the toothed belt (5) that faces the work piece sections (3).

3. The pressing device (1) according to claim 1, wherein the tooth-like ribs (8) of the toothed belt (5) are arranged on a side of the toothed belt (5) that faces away from the work piece sections (3).

4. The pressing device (1) according to claim 1, wherein the toothed belt (5) comprises a fabric running in the longitudinal direction, and/or steel strips running in the longitudinal direction, around which an elastic plastic is injection-molded, thereby forming the tooth-like ribs (8).

5. The pressing device (1) according to claim 1, further comprising a clamping device (9) configured to fasten the toothed belt (5) to the support element (6).

6. The pressing device (1) according to claim 1, wherein the toothed belt (5) consists of polyurethane, at least on a surface thereof.

7. The pressing device (1) according to claim 1, wherein the tooth-like ribs (8) are introduced only in a portion of the recesses (11) in order to change the length of a section of the toothed belt (5) between the bearings (7).

8. The pressing device (1) according to claim 1, wherein the tooth-like ribs (8) are aligned transversely to the longitudinal direction of the toothed belt (5).

9. The pressing device (1) according to claim 1, wherein the tooth-like ribs (8) are arranged over an entire extent of the toothed belt (5).

10. The pressing device (1) according to claim 1, wherein a position of the toothed belt (5) on the support element (6) is predefined exactly by the recesses (11) in the support element.

11. The pressing device (1) according to claim 1, wherein the toothed belt (5) is fastened to the support element (6) in the longitudinal direction of the toothed belt (5) solely by the interlocking of the toothed belt (5) with the support element (6).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention and the technical background are explained below using the figures; it should be noted that the figures show a preferred embodiment of the invention, but the invention is not limited thereto. In the figures,

(2) FIG. 1: schematically shows a pressing device,

(3) FIG. 2: schematically shows a first embodiment of the support elements of the pressing device, and

(4) FIG. 3: schematically shows a second embodiment of the support elements of the pressing device.

DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS

(5) FIG. 1 shows a device 1 for processing circumferential surfaces 2 of a work piece section 3. The device 1 comprises two pivotable arms 10, at the ends of which a support element 6 is fastened in each case. A toothed belt 5, which can press a finishing tape (not shown) against the circumferential surface 2 of a cylindrical work piece section 3, is fastened to each support element 6. The toothed belt 5, which has tooth-like ribs 8, the longitudinal direction of which is arranged transversely thereto, is fastened interlockingly in recesses 11, which are formed in the support element 6 such that they correspond to the tooth-like ribs 8. In addition, a clamping device 9 can be provided to fasten the toothed belt 5 to the support element 6.

(6) With the pressing device shown, it is possible to process cylindrical work piece sections 3 with different diameters. For instance, FIG. 1 shows the processing of a work piece section 3 with a relatively large diameter on the left-hand side and the processing of a work piece section 3 with a relatively small diameter on the right-hand side. Consequently, the toothed belt 5 and therefore also the finishing tape (not shown) bear against the work piece sections 3 along different contact angles 4.

(7) FIG. 2 shows the support elements 6 with the toothed belts 5 each fastened therein. The toothed belt 5 is fastened to the support element 6 by means of an interlock between the tooth-like ribs 8 thereof and recesses 11 in the support element 6 and is additionally secured by means of a clamping device 9. The clamping device 9 comprises a threaded bore in the support element 6 and a screw fastening that passes through a hole in the toothed belt 5 and engages in the threaded bore. In the embodiment of FIG. 2, the tooth-like ribs 8 are arranged on the side of the toothed belt 5 that faces the work piece section 3.

(8) The embodiment according to FIG. 3 is very similar to the embodiment of FIG. 2, the tooth-like ribs 8 being arranged on the side of the toothed belt 5 that faces away from the work piece section 3.

(9) The specification incorporates by reference the disclosure PCT/EP2015/061148, filed May 20,2015 and DE 20 2014 102 403.4, filed May 22, 2014.

(10) The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawing, but also encompasses any modification within the scope of the appended claims.

LIST OF REFERENCE SYMBOLS

(11) 1 Pressing device 2 Circumferential surface 3 Work piece section 4 Contact angle 5 Toothed belt 6 Support element 7 Bearing 8 Tooth-like ribs 9 Clamping device 10 Arm 11 Recess