DE8901563U1 - Curved section of a guide rail of a chain conveyor - Google Patents

Description

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10 February 1989 84 707 G-sb

Gerhard Lanthans, 8014 MBadMm-Menbiberg

Curved section of a guide rail of a chain conveyor

The invention relates to a curved piece made of plastic or similar of a guide rail of a chain conveyor for hinged band chains made of articulated support plates made of steel or another magnetic material for chain conveyors with a U-shaped cross-section, the upwardly pointing legs of which form the rail tracks, which are connected to one another by a continuous web or by web parts arranged at a distance from one another, with Bauer magnets being arranged one after the other in recesses in the rail tracks.

Chain conveyors consist of endless hinged belt chains running in guide rails, which are made up of support plates connected to one another in an articulated manner. In curved sections of the guide rail, the plate guides on the outside of the curved sections tend to lift off. It is known to provide the support plates with dovetail-shaped guide or foot pieces or with angled guide pieces, which fit the rail section in curved sections of the guide rail in a form-fitting manner, so that they are prevented from lifting off.

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It is also known to arrange permanent magnets in the rails of the curved section so that the steel support plates of the hinged chain are held magnetically in contact with the upper sliding surface of the guide rails. A particular problem is the holding of the permanent magnets in the rails of such curved sections. In a curved section of the type mentioned at the beginning, known from DE-GM 84 08 857, the rails on the underside of which are provided with pocket-shaped, elongated cavities at a distance from one another, into which the permanent magnets are inserted and whose edges are provided with a dovetail-shaped undercut circumferential groove into which a cover part with a correspondingly complementary edge is inserted to hold the permanent magnets in the pocket-shaped recesses. This type of arrangement and mounting of the magnets is relatively complex and complicated because the rail sections are provided with pocket-shaped recesses on their undersides at a distance from one another and these have to be closed with special cover parts after the permanent magnets have been inserted. Furthermore, the known curved piece does not allow the permanent magnets to be arranged close together in the rail sections.

The object of the invention is therefore to create a curved piece of the type specified at the outset, in whose rail tracks permanent magnet pieces can be held close together in a simple design.

According to the invention, this object is achieved in a curved section of the generic type in that at least the outer rail section is designed as a carbon profile and successive sections of permanent magnets are held in at least the profile channel of the outer rail section. In the curved section according to the invention, the outer or both rail sections are provided with a longitudinal channel which

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closed at the top by the cover wall of the or the rails. For example, cuboid-shaped permanent magnet pieces can be inserted into this channel in the Welse so that they fill the channel(s) of the curved pieces and in the

Channels are located close together. The length of the permanent magnet pieces

is chosen so that it follows the curvature of the channel

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According to an advantageous embodiment of the invention, the profile channel consists of a groove with a T-shaped cross section, the cross section of the head part corresponding to the cross section of the essentially cuboid-shaped permanent magnets and the web part forming a gap that connects the channel part formed by the head part with the underside of the rail track, which is essentially rectangular in cross section. This channel formed by a T-shaped groove can be easily produced using an approximately mushroom-shaped presetter, the slot in the bottom area of the underside of the profile track not causing any interference because the permanent magnet pieces are securely held in the channel part formed by the head part.

The groove or grooves holding the magnet pieces can also be open on the sides of the rails facing each other. These grooves can also be T-shaped in cross-section, with the cross-sections each rotated by 90° towards each other so that the web parts face each other. The cuboid permanent magnet pieces can in turn be inserted into the channel parts formed by the wider heads in the manner described.

The grooves in the inner side parts of the profile strands can also be closed by a profile strip. The profile strip can be glued to the curved piece or connected to it in a form-fitting manner. The functional shaft is aligned

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the top of the profile strip with the top of the rail track. The profile strip can be made of a particularly low-wear material, so that it further improves the wear resistance of the curved section. The curved section is preferably made of a wear-resistant plastic with good sliding properties.

According to a further embodiment, the rail track is provided with successive chamber-shaped recesses with a T-shaped cross-section that are open at the bottom, with each chamber having an opening in its middle area that extends at least across its width. To produce the recesses, the recess is first milled so that the milling cutter can be inserted into it. The grooves, which are T-shaped in cross-section, are then milled on both sides. The magnet pieces, which correspond in size to the recess, can then be inserted through the wide recess into the T-shaped grooves that adjoin it on both sides.

It is advisable to provide separating webs between the individual chambers at equal angular intervals. These separating webs allow the curved rail sections to be divided into curved sections with predetermined angles, whereby the separating cuts must then be made through the webs. Suitable angular intervals are, for example, 15 degrees.

According to a further embodiment, it is provided that the rail tracks are provided with inwardly open grooves into which the magnetic bodies are inserted. The magnetic bodies can extend over the entire cross-section between the rail tracks. The magnetic bodies can consist of magnetic bodies bound by flexible plastic, which can then be elastically or plastically adapted to the feed into

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According to a further embodiment, foil-shaped pockets are provided for holding the magnetic bodies, which are connected and inserted into the permanent magnets.

In a further embodiment of the invention, the rail track consists of an upper profile with grooves open at the bottom into which permanent magnet bodies are inserted, whereby the grooves are closed by a cover plate. The cover plate is expediently made of plastic in order to avoid magnetic feedback.

According to a further embodiment, the rail tracks are provided with pockets or grooves that are open to the inside and closed by plastic profiles. Magnetic bodies can be inserted into these grooves. It is also possible to use the profiles without inserted magnetic bodies if sufficient guidance and holding of the foot pieces of the chain links on the rail tracks is ensured in another way.

The shape of the plastic profiles can be adapted to the base pieces of the chain links.

According to a further embodiment of the invention, it is provided that the grooves are provided in the plastic profiles, which then point outwards, whereby the grooves are then closed by remaining edge strips of the rail tracks.

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According to the invention, it is possible to hold identical or different profile strips holding the magnets or only adapted to the foot pieces in a rail body parallel to one another, so that a modular principle is created according to which rail pieces can be put together to suit the respective requirements. This modular construction is particularly useful in order to be able to implement different rail shapes in a cost-effective manner with little storage.

The profile strips connected to the rail profiles are preferably made of a more wear-resistant plastic, which preferably also has a lower coefficient of friction. In this way, the plastic parts exposed to wear can be made of higher quality material, while the plastic parts that only serve as a holder are made of a cheaper plastic material.

In a further embodiment of the invention, it is provided that the upper parts forming the rail tracks are screwed to the lower parts serving to return the chains by means of threaded bushings being embedded in the lower parts. This embodiment allows the upper parts to be removed for repair or maintenance purposes, whereby they are easily accessible from above.

It is advisable to close the gaps between the profile strips and the rails with a filler, preferably an adhesive, so that no dirt can penetrate into these gaps and no bacteria can accumulate in them.

The profile strips that close the grooves of the rail sections are conveniently held in grooves in the base body and are thus secured against displacement. Other connections can also be provided to prevent displacement.

Examples of the invention are explained in more detail below with reference to the drawing.

Fig.l a plan view of a first embodiment of a curve stack and

Fig.2 and

Fig.3 Cross sections through the curved section according to Fig.1 along the line A-A in different embodiments.

Fig.4 a cross-section through a curved section with T-shaped pockets or grooves open at the bottom,

Fig.5 a bottom view of the curve piece according to Fig.4,

Fig.6 a cross-section through a curved section with lateral grooves arranged in the rail sections and open towards each other, into which continuous magnetic bodies are inserted,

Fig.7 a top view of a magnetic body made of elastic or plastic material inserted into the curved piece according to Fig.6,

Fig.8 a double-layer film web with between the

Pockets formed by cover films, which are separated from each other by intermediate webs,

Fig.9 shows a cross-section corresponding to Fig.6, in which the magnet body consists of individual magnets which are inserted into the pockets of a pocket foil track as shown in Fig.8,

Fig.10 a cross-section through a rail track bolted to a return profile, which consists of a U-shaped profile with grooves open at the bottom in the legs,

Fig.11 a rail track bolted to a return body, in whose profiles forming the rails lateral notches are arranged, which are closed by profile strips,

Fig.12 a representation corresponding to Fig.11 with differently profiled closure strips,

Fig.13 is a representation corresponding to Fig.11 and 12 with profile locking strips with groove-shaped recesses,

Fig. 14 shows a rail track body in which the profiles are provided with grooves that are open to the outside,

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to c rail bodies with different profile strips,

Fig.16 a bottom view of the curved rail sections according to Figs.11 to 13.

The curve section consists of two circularly curved rail sections 1,2, to which straight rail sections 3,4 are connected tangentially. The circularly curved rail sections 1,2 extend over quarter circles and form sector-like sections with a center angle of 90°. The inner rail section 2 is connected to the outer rail section in the manner shown by web sections 5. Sector-like openings with rounded corners are provided between the individual web sections S. As can be seen from Fig. 2

As can be seen, the rail tracks 1,2 are provided with channels 7,8 that are rectangular in cross section and curved concentrically to the rail tracks. The rail tracks 1,2 are rectangular in cross section and the channels 7,8 run just below the sliding surfaces 9,10 on the top of the rail tracks. The channels 7,8 that are rectangular in cross section are connected to the undersides of the rail tracks 1,2 by gap-shaped slots 11,12, so that the channels 7,8 and the slots 11,12 form T-shaped grooves in cross section. These grooves can be cut using appropriately designed milling cutters.

The embodiment according to Fig.3 differs from that according to Fig.2 in that only the outer rail track 1 is provided with a T-shaped groove, while the inner rail track 2» has a dovetail-shaped undercut groove 13 on its inner side, which serves to accommodate correspondingly dovetail-shaped undercut foot pieces of the support plates of the hinged band chain* ^v

Cuboid-shaped permanent magnet pieces 15 are inserted into the channels 7,8, which have a rectangular cross-section. These permanent magnet pieces 15 have a smaller width than the channels, so that they can follow the curvature of the channels.

In the embodiment according to Fig. 4 and 5, pockets 20 with a T-shaped cross section that are open at the bottom and hold permanent magnet pieces are arranged in the rail track 1. These pockets have recesses 21 in their middle area that are wider than the T-shaped grooves 20. The T-shaped grooves are milled from these recesses 21 and, after the grooves have been made, the permanent magnet pieces (not shown) are inserted. After the permanent magnet pieces have been introduced, the recess 21 can be closed by a suitable cover piece.

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In the embodiment according to Fig. 6, grooves 22, 23 are milled into the inner sides of the rail tracks 1, 2, into which permanent magnet pieces 24 are inserted. These permanent magnet pieces can be one piece and bridge the entire width between the rail tracks 1, 2.

The permanent magnet pieces can, as can be seen from Fig.7, consist of a sawtooth-shaped elastic strip, where the angles between the teeth are adapted to the desired bending radius.

In the embodiment according to Fig.8, which shows a top view of the rail section according to Fig.6, individual permanent magnet pieces are inserted into pockets of a holding film, whereby the individual pockets can be open or closed. The film is simply designed in such a way that it fixes the permanent magnet pieces held in it and keeps them in the correct position.

In the embodiment according to Fig. 10, the rail tracks 1, 2 are formed by a profile piece 26 with a U-shaped cross section, the legs of which are provided with grooves that are open towards the bottom. These grooves 27, 28 are closed by a cover plate 29, so that the grooves 27, 28 form chambers in which permanent magnet pieces can be held.

The upper profile part 26 forming the rail tracks 1,2 is connected to the lower part 30 forming the return of the chain by screws that pass through aligned holes 31 and are screwed into threaded bushings that run into the profile part 30 serving the return*

In the embodiment according to Fig.11, the profile part 33 forming the rail tracks 1,2 is provided in the rail tracks 1,2 with grooves

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34,35, which are open towards each other and closed by profile strips 36, which are set into grooves in the web part of the profile 33 for their holding. Permanent magnet pieces can in turn be held in the grooves 34,35.

In Fig. 12, in the right half, a profile strip 38 is shown, which is provided with a dovetail-shaped undercut. This undercut serves to guide correspondingly designed foot pieces of the chains.

Magnet pieces can be inserted or not into the grooves closed by the profile strips 36,38. If magnet pieces are not inserted, plastic chains can also be used, for example.

Because the profiles that guide the chains can be easily designed in different ways, a modular construction is achieved that can be used with both metal chains and plastic chains, regardless of whether magnets are inserted into the recesses used to hold magnets or not.

In the embodiment according to Fig. 18, the profile strips 39 are provided with rectangular grooves 40 into which correspondingly shaped foot pieces of the chains can engage. Such hold-down devices can be provided if holding magnets are not used.

In the embodiment according to Fig. 14, the grooves 41 are not arranged in the base body 42 forming the rail sections, but in the profile strips 43. These profile strips 43 are provided with grooves 41 that are open to the outside and have lower webs 44 that are set into complementary grooves in the base body 42 for their support.

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From Fig.15, rail base bodies 45 can be seen in which two profile strips are held in pairs, i.e. four profile strips in total, so that two chains can be guided parallel to one another in one base body. The example

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The modular construction implemented by the invention can be seen in Fig. 15.

Fig.16 shows a bottom view of the profiles according to Figs.11 to 13, with the pockets incorporated into the rail strands indicated by dashed lines.

Furthermore, it can be seen from the curved section according to Fig. 16 that crosspieces are arranged at an angular distance of about 15 degrees, through which cuts can be made without opening the tubs or boxes, so that different rail guides can also be implemented in a simple manner.

Claims (20)

·· (i M Il K ; : &iacgr;&ggr;&iacgr;\.&iacgr;&igr;&igr;« Mil 10« February 1989 84 707 G-sb Gerhard Langhans, 8014 Monchen-Naubibera Curved section of a guide rail of a chain conveyor Protection claims 1. Curved part made of plastic or similar of a guide rail of a chain conveyor for hinged chains made of articulated support plates made of steel or another magnetic material for chain conveyors with a U-shaped cross-section, the upwardly pointing legs of which form the rail tracks, which are connected to one another by a continuous web or by web parts arranged at a distance from one another, with permanent magnets arranged one after the other in recesses in the rail tracks, characterized, that at least the outer rail track (1) is designed as a hollow profile and that successive sections of permanent magnets (15) are held at least in the profile channel of the outer rail track. 2. Curve piece according to claim 1, characterized in the profile channel consists of a T-shaped groove in cross section wherein the cross section of the head part (7,8) corresponds ^to the cross section of the essentially cuboid-shaped permanent magnets ?;? (15) and the web part has a gap (11,12) vi which forms the channel part formed by the head part _ (1 Oi _i t. J·· &Igr;&Igr;^«.».·!»· A^m to nn«i«/<k>iU> 1«| &ugr;&Agr;&bgr;&Agr;&eegr;«· 1 ir»V>A*t -""?"" I f A *V / lit &Lgr; W ^ f ^^ ^ \j jj ^ ^f ^ 0y j^ ^ ^^ ^ j ^p ^y &Lgr; JIt \f UV^VA ^ ^* mi &khgr; ^ ^ AItI TT ^^ ^7 ^7 j| ^, JL· &Lgr; ^^ ■ ■ ^^ J ft rectangular rail track 0.2). 3. Curved piece according to claim 1 or 2, characterized in that in both rail strands (1, 2, 2") profile channels (7, 8) for receiving and holding permanent magnet pieces (15) \ are provided. 4. Curve piece according to claim 1, characterized in that &igr; the groove or grooves on the facing sides of the Rail lines are open. 5. Curve piece according to claim 4, characterized in that &mdash; AAa hoof am &Iacgr; **■*·«* K &lgr;*««** D«>a Ci 1 1oi 0 4- α naerhincCAn cin/1 . 6. Curved piece according to claim 4 or 5, characterized in that the upper side of the profile strip is flush with the upper side of the rail line. |; 7. Curved section according to claim 1, characterized in that the rail track is provided with successive, downwardly open chamber-shaped recesses with a T-shaped cross section, and that each chamber is provided in its central region with a recess or opening extending at least over its width. 8. Curved section according to claim 7, characterized in that separating webs are provided between the chambers at equal angular intervals. &bull; ar ·> it (f &igr;' &bull; tr ·/> ·> ··«· &igr;&igr; r( 9. Curved section according to claim 1, characterized in that the rail tracks are provided with inwardly open grooves into which magnetic bodies are inserted. 10. Curved piece according to claim 9, characterized in that the magnetic body or bodies consist of magnetic particles bound by a flexible plastic. 11. Curved piece according to claim 10, characterized in that the magnetic body consists of a sawtooth-shaped strip of flexible material. 12. Curved piece according to claim 9, characterized in that permanent magnet bodies are inserted into pockets of a holding film. 13. Curved section according to claim 1, characterized in that the rail tracks consist of profiles with downwardly open grooves into which permanent magnet bodies are inserted and which are closed by a cover plate. 14. Curved section according to claim 1, characterized in that the rail sections are provided with lateral pockets or grooves which are open inwards and are closed by plastic profile strips. 15. Curved piece according to claim 14, characterized in that the plastic profiles closing the grooves are adapted in their shape to the foot pieces of the chain links. 16. Curve piece according to claim 1, characterized in that the grooves are provided in the plastic profile, which are formed by remaining strips of the base body of the slide. .··,·..·! t I in i«i &bull; fill I &igr;&iacgr; &Ggr;&igr; ¹ »!! ! j '"jh.'i ·< »I Il «il ·»· Il »I strands are closed. 17. Curve stack according to claim 1, characterized in that several identical or different profiles, possibly holding magnets, or profile strips adapted only to the foot pieces of the chains, are held parallel to one another in a rail base body. 18. Curve stack according to one of the preceding claims, characterized in that the profile strips consist of a more wear-resistant plastic with preferably a lower friction coefficient. 19. Curve piece according to one of the preceding claims, characterized in that the upper part forming the rail tracks is screwed to the lower part serving for the return by means of threaded bushings being embedded in the lower parts. 20. Curved piece according to one of the preceding claims, characterized in that the joints between the profile strips and rail strands are closed by fillers, preferably adhesives. &bull; * M M I MM Il Mil &bull; » · &igr;&igr;&igr; t·. t &igr;&igr; »* I II IIM* III * f 11*111 I tit I * I III I SIIlI »» M Il MIM* Il M