Segment roller

Abstract

A segment roller (1) has a roller body (2), which is mounted rotatably about an axis (3). To this end, the roller body (2) has on the outside grooves (9), in which tongues (8) of profiles (7) engage. These profiles (7) grip the material web (5) directly or indirectly. In order to increase the working life and improve the mechanical properties of the profiles (7), the profiles (7) are of shear-resistant configuration and have elastic lips (20). These elastic lips (20) are deformed upon the engagement of the tongue (8) in the groove (9).

Claims

1. A segment roller has at least one profile, at least one axis having a length and at least one roller body that is mounted rotatably about said at least one axis, wherein said at least one roller body has an outside and at least one groove on said outside, said at least one profile has at least one tongue, being displaceable along said length of said at least one axis and engaging said at least one groove, said profile clasps at least one material web directly or indirectly, said at least one profile is of shear-resistant configuration, and on said at least one roller body is provided at least one elastic lip, which, upon the engagement of said at least one tongue in said at least one groove, said at least one tongue is elastically deformable in order to hold said at least one profile with little vibration in a displaceable manner.

2. The segment roller according to claim 1, wherein said at least one elastic lip is integrally connected to said at least one roller body.

3. The segment roller according to claim 1, wherein said at least one elastic lip is configured as a separate part and is plugged into said at least one groove.

4. The segment roller according to claim 3, wherein said at least one separate part is inserted into said at least one groove or tongue, and which at least one groove or tongue is configured in undercut form.

5. The segment roller according to claim 1, wherein said at least one tongue is clasped on both sides by said lips.

6. The segment roller according to claim 1, wherein said at least one elastic lip is assigned at least one spacer.

7. The segment roller according to claim 6, wherein said at least one spacer is elastically adjustable.

8. The segment roller according to claim 1, wherein said at least one elastic lip has a thin-walled configuration in relation to said at least one profile or the groove.

9. The segment roller according to claim 1, wherein said at least one elastic lip establishes a liquid-tight connection.

10. The segment roller according to claim 1, wherein said at least one elastic lip is configured as a sliding part.

11. The segment roller according to claim 1, wherein said at least one profile is held by at least one covering, which clasps the at least one material web.

12. The segment roller according to claim 1, wherein said at least one profile is held at both ends in said grooves.

13. The segment roller according to claim 1, wherein on said outside of said at least one roller body, in the region of said at least one groove, is provided at least one protective boss.

14. A segment roller has at least one profile, at least one axis having a length and at least one roller body that is mounted rotatably about said at least one axis, wherein said at least one roller body has an outside and at least one groove on said outside, said at least one profile has at least one tongue, being displaceable along said length of said at least one axis and engaging said at least one groove, said at least one profile clasps at least one material web directly or indirectly, said at least one profile is of shear-resistant configuration, and on said at least one roller body is provided at least one elastic lip, which, upon the engagement of said at least one tongue in said at least one profile, said at least one tongue is elastically deformable in order to hold said at least one profile with little vibration in a displaceable manner.

15. The segment roller according to claim 14, wherein said at least one elastic lip is integrally connected to said at least one profile.

16. The segment roller according to claim 14, wherein said at least one elastic lip is configured as a separate part and is plugged into said at least one tongue.

17. The segment roller according to claim 16, wherein said at least one separate part is inserted into said at least one groove or tongue, and which at least one groove or tongue is configured in undercut form.

18. The segment roller according to claim 14, wherein said elastic lip comprises two elastic lips and wherein said at least one tongue is clasped on both sides by said two elastic lips.

19. The segment roller according to claim 14, wherein said at least one elastic lip is assigned at least one spacer.

20. The segment roller according to claim 19, wherein said at least one spacer is elastically adjustable.

21. The segment roller according to claim 14, wherein said at least one elastic lip has a thin-walled configuration in relation to said at least one profile or the groove.

22. The segment roller according to claim 14, wherein said at least one elastic lip establishes a liquid-tight connection.

23. The segment roller according to claim 14, wherein said at least one elastic lip is configured as a sliding part.

24. The segment roller according to claim 14, wherein said at least one profile is held at least one covering, which clasps the at least one material web.

25. The segment roller according to claim 4, wherein said at least one profile is held at both ends in said grooves.

26. The segment roller according to claim 14, wherein on said outside of said at least one roller body, in the region of said at least one groove, is provided at least one protective boss.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) Other advantages and characteristics of this invention will be explained in the detailed description below with reference to the associated figures that contain several embodiments of this invention. It should however be understood, that the figure is just used to illustrate the invention and does not limit the scope of protection of the invention.

(2) FIG. 1 shows a spatial representation of a segment roller,

(3) FIG. 2 shows a cross-sectional representation of the segment roller according to FIG. 1, and

(4) FIG. 3 shows the representation according to FIG. 2 of an alternative embodiment.

DETAILED DESCRIPTION OF THE INVENTION

(5) FIG. 1 shows a segment roller 1, which is substantially formed of a roller body 2. This roller body 2 is supported rotatably about an axis 3 in order that the segment roller 1 can clasp a material web 5 running in the running direction 4. The material web 5 is here guided onto the segment roller 1, so that the material web 5, on the basis of its own tension force, presses with a certain force against the segment roller 1.

(6) The roller body 2 has on its outer periphery slat holders 6, which are integrally formed onto the roller body 2. On these slat holders 6, profiles 7 are held displaceably along the length of the axis 3. These profiles 7 are controlled via control means (not represented) on the end faces of the segment roller 1, in order that these, during a revolution of the segment roller 1, perform a rotationally synchronous sliding movement. This sliding movement is then transmitted to the material web 5 in order to have a desired effect on the material web 5. In this way, the material web 5, for example, can be altered in terms of its position and/or spread. In this case, the profiles 7 themselves can also be symmetrically or asymmetrically divided over their length. This division is required, for example, in connection with a spreading of the material web 5.

(7) To this end, the profiles 7 have tongues 8, which are held in grooves 9 of the slat holders 6. Via this connection, the profiles 7 are displaceable in the axial direction, yet firmly, in particular positively, held transversely thereto.

(8) In order to be able to adapt the segment roller 1 beforehand to different material webs 5, on the profile 7 is provided a receptacle 10, in which a covering 11 can be inserted. This covering 11 is then specially adapted to the properties of the respective material web. Upon the changeover of different material webs 5 within a processing machine, the segment roller 1, furthermore, can also be adapted to the new tasks by simple changing of the coverings 11. In further applications, the material web 5 can also be clasped directly by the profile 7.

(9) Both the roller body 2 and the profiles 7 are made of metal. In particular, aluminium and alloys thereof have proved successful for the roller body 2. These can be produced relatively easily in a continuous casting or extrusion process with any chosen length and constant cross section. In this way, a very cost-effective and thus economical manufacture of the roller body 2 is obtained. For the profiles 7, other materials too, in particular ferrous metals, are expedient, in order to achieve a high strength in spite of a thin-walled configuration.

(10) The further description is made with reference to the detailed drawing according to FIG. 2, which in enlarged view shows the slat holders 6 with the tongue 8 and the groove 9 in sectional representation.

(11) On the outside of the slat holder 6 is provided a protective boss 12, which protects the groove 9 from damage. This protective boss 12 has a substantially rectangular cross section and radially overhangs the likewise radially oriented groove wall.

(12) In order to prevent the tongue 8 from colliding, for example, in the groove 9, the tongue 8 of the profile 7 has elastic lips 20. These elastic lips 20 are integrally formed onto the tongue 8 and are configured with substantially thinner walls than the tongue 8. Alternatively, the elastic lips 20 could also be integrally formed onto the groove 9. Due to this thin-walled characteristic, an enhanced flexibility is obtained, so that the material of the profile 7, in the region of the lips 20, is elastically deformable. Preferably, the lips 20 are produced by cold forming of the profile 7. In particular where a non-ferrous metal is used for the profile 7, the lips 20 can also be produced in a single operation with the entire profiling of the profile 7, for instance after the extrusion process.

(13) The lips 20 prevent collision of the tongue 8 in the groove 9 and hence, for example, braking upon a mutual relative movement of both parts. In this way, vibrations of the profile 7 are reliably prevented, and thus the accuracy of movement of the profile 7 improved. Moreover, the lips 20 prevent a penetration of liquid into the groove 9 when the material web 5 is used in the wet region.

(14) FIG. 3 shows a sectional representation according to FIG. 2 of an alternative embodiment of the segment roller. Same reference symbols here denote same parts. Below, only the differences from the embodiment according to FIG. 2 are examined.

(15) In the embodiment according to FIG. 3, the sliding element with elastic lips 20 is provided or the elastic lips 20 with sliding function are provided in a separate part 21. This separate part 21 is preferably produced from a polymer, so that it is relatively easy to achieve the desired elastically deformable and sliding lips 20. The separate part 21 is here held positively in the groove 9. For this purpose, the groove 9 is configured in undercut form. This reliably prevents an accidental detachment of the separate part 21 from the roller body 2. In order to further restrict the mobility of the tongue 8 within the groove 9, in the separate part 21 additional spacers 22 are provided. These limit the displacement travel of the tongue 8 transversely to the axis 3, in addition these spacers 22 also have a sliding function. In this way, undefined positions of the tongue 8 within the groove 9 are prevented and a sliding action of the profile 7 is further maintained. Furthermore, this separate part 21 forms with the slat holder 6 cavities 23, which are compressed in the event of overload. In this way, the spacers 22 are elastically adjustable, so that, in this overload situation too, an elastic mounting of the tongue 8 is given. This resilience is, however, substantially stiffer than that of the lips 20, so that all in all a progressive resilience ensues. In this way, an additional damping effect, which prevents the formation of vibrations in the region of the material web 5, is obtained.

(16) Since some of the embodiments of this invention are not shown or described, it should be understood that a great number of changes and modifications of these embodiments is conceivable without departing from the rationale and scope of protection of the invention as defined by the claims.