MAGNETIC SCREEN LINING FASTENING SYSTEM

Abstract

A fastening system for screening machines and/or setting machines for fastening replaceable screen lining segments and/or replaceable anti-wear elements in or to a screening machine having at least one frame which receives the screen lining segments and/or supports the anti-wear elements. For fastening of a screen lining segment and/or of an anti-wear element at least one adapter is fastened to the frame, the adapter having at least one magnet. The magnet interacts with the frame and/or with at least one ferromagnetic coupling element arranged in a vibration-proof manner in or on the screen lining segment and/or anti-wear element and in this way produces a magnetic connection between the adapter and the frame and/or between the adapter and the screen lining segment and/or anti-wear element. Additionally, a screening machine having such a fastening system.

Claims

1-14. (canceled)

15. A fastening system for screening machines and/or jigs for fastening exchangeable screen lining segments and/or exchangeable wear protection elements in or on a screening machine, comprising: at least one frame that receives the screen lining segments and/or supports the wear protection elements, wherein, in order to fasten a screen lining segment and/or a wear protection element, at least one adapter is fastened to the frame, wherein the adapter comprises at least one magnet, wherein the magnet interacts with the frame and/or with at least one ferromagnetic coupling element that is arranged in or on the screen lining segment and/or wear protection element so as to be vibration-resistant, and thereby establishes a magnetic connection between the adapter and the frame and/or between the adapter and the screen lining segment and/or wear protection element, wherein the one or more ferromagnetic coupling elements is/are molded in each screen lining segment and/or each wear protection element.

16. The fastening system according to claim 15, wherein the adapter is fastened to a component of the screening machine made of a non-ferromagnetic material, in particular in that the adapter is fastened in a force-fit and/or cohesive and/or form-fit manner

17. The fastening system according to claim 15, wherein the adapter is fastened to a component of the screening machine that is made of ferromagnetic material, in particular in that the adapter is fastened in a magnetic and/or force-fit and/or cohesive and/or form-fit manner

18. The fastening system according to claim 15, wherein each adapter comprises a plurality of magnets that are in particular arranged so as to be equidistant.

19. The fastening system according to claim 15, wherein one or more ferromagnetic coupling elements are formed by mounting rails and/or mounting frames, which are magnetically secured to the adapter, wherein screen lining segments and/or wear protection elements are secured to the mounting rails and/or mounting frames in a force-fit and/or form-fit manner and so as to be vibration-resistant.

20. The fastening system according to claim 15, wherein the ferromagnetic coupling element is designed so as to be in parallel with the course of an elongate adapter, continuously or in sections.

21. The fastening system according to claim 15, wherein a plurality of screen lining segments form a screen base, in particular wherein adjacent screen lining segments in each case form a form-fit, in particular comprise a tongue-and-groove connection.

22. The fastening system according to claim 15, wherein a plurality of screen lining segments form a screen base, wherein the last screen lining segments in the transport direction of the screen material are supported, at the end, in the transport direction, against transverse stop elements, in particular against a continuous transverse stop strip, in particular in that the screen lining segments form a form-fit, in particular a tongue-and-groove connection, to the transverse stop strip extending perpendicularly to the transport direction.

23. The fastening system according to claim 15, wherein a plurality of screen lining segments form a screen base, wherein the screen lining segments are supported laterally, in the direction perpendicularly to the transport direction of the screen material, against longitudinal stop elements, in particular longitudinal stop strips, extending in parallel with the transport direction, in particular in that the screen lining segments form a form-fit, in particular a tongue-and-groove connection, to the longitudinal stop strips extending in parallel with the transport direction.

24. The fastening system according to claim 15, wherein the magnet(s) and/or ferromagnetic coupling element(s) comprise at least one undercut.

25. The fastening system according to claim 15, wherein the screen lining segments and the respective adapters for fastening the screen lining segments form a form-fit, in particular a tongue-and-groove connection.

26. The fastening system according to claim 15, wherein the adapters are formed by adapter strips having a symmetrical arrangement of a plurality of magnets, and/or in that the screen lining segments have a rotationally symmetric arrangement of a plurality of ferromagnetic coupling elements and a square basic shape.

27. The fastening system according to claim 15, wherein the adapter comprises magnets that act on both sides, and/or is equipped with magnets on both sides, such that the adapter is able to be magnetically fastened to the frame, and a screen lining segment and/or a wear protection element can be magnetically fastened to the adapter.

28. A screening machine with a support frame for receiving a plurality of screen lining segments for forming a screen base, wherein the support frame comprises the fastening system according to claim 15.

Description

[0044] Three embodiments of the invention are shown in the figures and are described in greater detail in the following. In the figures:

[0045] FIG. 1 is a schematic perspective view of a screen base formed of a plurality of screen lining segments;

[0046] FIG. 2 is the detail view A according to FIG. 1;

[0047] FIG. 3 shows a second exemplary embodiment comprising a frame that is formed by a C-profile and is intended for receiving the adapter strip;

[0048] FIG. 4 shows a third exemplary embodiment comprising a frame that is formed by an angle section and is intended for receiving the adapter strip.

[0049] In the figures, identical components are provided with identical reference signs.

[0050] FIG. 1 is a schematic perspective view of a screen base of a screening machine, which screen base is formed of a plurality of screen lining segments 10, 20. The screen lining segments 10, 20 are subjected to wear and are fastened on the frame 40 of the screening machine so as to be exchangeable. The transport direction of the screen material is indicated by the arrow 5. This means that the screen material to be prepared is applied at the rear end of the screen base that is located at the upper edge of the drawing in the illustration according to FIG. 1, and is transported away via the front end of the screen base that is located at the lower edge of the drawing in the illustration according to FIG. 1.

[0051] Laterally, the screen lining segments 10, 20 are supported against the longitudinal stop strips 41, 42 that extend in parallel with the transport direction 5, in order to conduct away, to the frame 40, any transverse forces acting on the screen lining segments 10, 20.

[0052] In order to absorb the thrusts in the transport direction of the screen material, the last screen lining segments 10, 20 in the transport direction of the screen material are supported, at the end, against the continuous transverse stop strip 45 of the frame 40. As a result, the thrusts acting on the screen lining segments 10, 20 are absorbed, in the transport direction of the screen material, by the frame 40 of the screening machine.

[0053] FIG. 2 is the detail view A according to FIG. 1. The frame 40 of the screening machine can be seen below the screen lining segments 10, 20. The adapter 30 is fastened to the frame 40. The adapter 30 is fastened to the frame 40 in a form-fit manner. The adapter 30 is formed of plastics material, as an injection molded part. Permanent magnets 31, 32 are inserted into the matrix of the adapter 30.

[0054] The two touching screen lining segments 10, 20 rest on the adapter 30, on the top of the adapter 30. The left-hand screen lining segment 10 in FIG. 2 comprises an iron reinforcement which forms a ferromagnetic coupling element 11 that forms a magnetic connection to the magnet 31 of the adapter. The right-hand screen lining segment 20 in FIG. 2 comprises an iron reinforcement which forms a ferromagnetic coupling element 21 that forms a magnetic connection to the magnet 32 of the adapter. The reinforcements strengthen the screen lining segments 10, 20 and extend in parallel with the support of the frame 40 on which the adapter 30, which is also formed as a strip, is fastened. The screen lining segments 10, 20 are made of polyurethane, wherein the reinforcements are molded in. As a result of the course of the reinforcements in parallel with the course of the frame 40, the screen lining segments 10, 20 are flexible, with the result that removal of the screen lining segments 10, 20 from the magnets 31, 32 is facilitated.

[0055] FIG. 3 shows a second exemplary embodiment comprising a frame 40 that is formed by a C-profile and is intended for receiving the adapter strip 30. The adapter strip 30 is formed by a plastics material. The adapter strip 30 comprises undercuts which engage behind the inwardly facing edges of the C-profile 40 and thereby fix the adapter strip 30 to the C-profile 40 in a form-fit manner. Permanent magnets 31, 32 are inserted into the matrix of the adapter 30.

[0056] The screen lining segments 10, 20 are fastened to the adapter 30 in exactly the same way as explained above, with reference to the first exemplary embodiment according to FIG. 2. The two touching screen lining segments 10, 20 rest on the adapter 30, on the top of the adapter 30. The left-hand screen lining segment 10 in FIG. 3 comprises an iron reinforcement which forms a ferromagnetic coupling element 11 that forms a magnetic connection to the magnet 31 of the adapter. The right-hand screen lining segment 20 in FIG. 3 comprises an iron reinforcement which forms a ferromagnetic coupling element 21 that forms a magnetic connection to the magnet 32 of the adapter. The reinforcements strengthen the screen lining segments 10, 20 and extend in parallel with the C-profile of the frame 40 on which the adapter 30, which is also formed as a strip, is fastened. The screen lining segments 10, 20 are made of polyurethane, wherein the reinforcements are molded in. As a result of the course of the reinforcements in parallel with the course of the frame 40, the screen lining segments 10, 20 are flexible, with the result that the removal of the screen lining segments 10, 20 from the magnets 31, 32 is facilitated.

[0057] FIG. 4 shows a third exemplary embodiment comprising a frame 40 that is formed by an angle section and is intended for receiving the adapter strip 30. The adapter strip 30 is formed by a plastics material. The adapter strip 30 comprises undercuts which engage behind the inwardly facing edges of bores in the angle section 40 and thereby fix the adapter strip 30 to the C-profile 40 in a form-fit manner. In order to secure the adapter 30 to the angle section, fastening pins 45 are used, which spread open those regions of the adapter 30 which engage through the bores in the angle section 40 after the adapter 30 has been placed on the angle section 40. The adapter 30 is thus fastened in a manner similar to that in the case of a dowel, by spreading open the connection elements and forming a form-fit connection. Permanent magnets 31, 32 are in turn inserted into the matrix of the adapter 30.

[0058] The screen lining segments 10, 20 are again fastened to the adapter 30 as explained above, with reference to the first exemplary embodiment according to FIG. 2 and the second exemplary embodiment according to FIG. 3.

[0059] The two touching screen lining segments 10, 20 rest on the adapter 30, on the top of the adapter 30. The left-hand screen lining segment 10 in FIG. 4 comprises an iron reinforcement which forms a ferromagnetic coupling element 11 that forms a magnetic connection to the magnet 31 of the adapter. The right-hand screen lining segment 20 in FIG. 4 comprises an iron reinforcement which forms a ferromagnetic coupling element 21 that forms a magnetic connection to the magnet 32 of the adapter. The reinforcements strengthen the screen lining segments 10, 20 and extend in parallel with the C-profile of the frame 40 on which the adapter 30, which is also formed as a strip, is fastened. The screen lining segments 10, 20 are made of polyurethane, wherein the reinforcements are molded in. As a result of the course of the reinforcements in parallel with the course of the frame 40, the screen lining segments 10, 20 are flexible, with the result that the removal of the screen lining segments 10, 20 from the magnets 31, 32 is facilitated.