EP0423292B1 - Profiled rod for a web-spreading roller - Google Patents

Profiled rod for a web-spreading roller Download PDF

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Publication number
EP0423292B1
EP0423292B1 EP90906944A EP90906944A EP0423292B1 EP 0423292 B1 EP0423292 B1 EP 0423292B1 EP 90906944 A EP90906944 A EP 90906944A EP 90906944 A EP90906944 A EP 90906944A EP 0423292 B1 EP0423292 B1 EP 0423292B1
Authority
EP
European Patent Office
Prior art keywords
web
profiled rod
intermediate support
base body
rod according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90906944A
Other languages
German (de)
French (fr)
Other versions
EP0423292A1 (en
Inventor
Heinrich Schmidt
Otto Lorenz
Werner Geyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erhardt and Leimer GmbH
Original Assignee
Erhardt and Leimer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19893914766 external-priority patent/DE3914766C1/en
Application filed by Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Publication of EP0423292A1 publication Critical patent/EP0423292A1/en
Application granted granted Critical
Publication of EP0423292B1 publication Critical patent/EP0423292B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/02—Rollers
    • D06B23/026—Rollers characterised by particular surface features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B65H2404/1119—Details of cross-section or profile shape with at least an axial cavity on the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/114—Built-up elements
    • B65H2404/1141—Built-up elements covering a part of the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/131—Details of longitudinal profile shape
    • B65H2404/1316—Details of longitudinal profile shape stepped or grooved
    • B65H2404/13163—Details of longitudinal profile shape stepped or grooved in longitudinal direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/18—Rollers composed of several layers

Definitions

  • the invention relates to a profile strip of the type specified in the preamble of claim 1.
  • a profile strip of this type known from DE-OS 24 00 741 consists of a lamellar body made of aluminum, which is provided with an elastomeric surface layer.
  • the production of the two parts of the profile strip is complex.
  • the application of the surface layer requires extraordinary care and is therefore time-consuming.
  • the surface layer can hardly be renewed, so that a worn profile strip must be replaced by a new one.
  • the surface layer tends to peel off especially under the forces exerted by the web.
  • a profile bar which consists of a C-shaped metal rail with claw-shaped bent-in legs and a support glued to the straight back.
  • the pad is a plastic adhesive slip in the form of a single-sided adhesive strip.
  • the edges of the pad must end at a distance from the edges of the back, because there the adhesive strength is insufficient and the pad can peel off.
  • the area usable for power transmission to the web is limited; the durability of the pad leaves something to be desired because the centrifugal force works on the pad. Attaching or replacing the pad for repairs is tedious. Additional adhesive is often used to increase the adhesive strength of the pad.
  • the invention has for its object to provide a profile strip of the type mentioned, which is durable despite the rough working conditions when spreading webs and is characterized by an inexpensive manufacture and easy assembly and repair options.
  • the intermediate carrier can be produced from a material that is very tight to the support.
  • the support can therefore no longer be detached from the intermediate support under the forces exerted by the web.
  • the support can also extend over the entire detachable width of the intermediate carrier.
  • the intermediate carrier together with the support can be a prefabricated component which can be produced practically endlessly inexpensively, then cut to the required length and pushed onto the base body as required.
  • the grip of the intermediate carrier on the base body is sufficient to reliably withstand the centrifugal forces on the one hand and the forces of the web on the other hand.
  • the clamp handle holds the intermediate carrier with the support securely on the base body even in the longitudinal direction when the web spreading roller is working.
  • the pretension is dimensioned such that it is easy to pull on the intermediate carrier, as is its rapid removal for repair purposes. Due to the simple, inexpensive manufacture of the intermediate carrier with its support, it can be thrown away when the support is worn and replaced with a new section. It is favorable that due to the clamp handle no consideration needs to be given to the material pairing between the intermediate carrier and the base body, so that the material of the intermediate carrier with regard to the cost-effective production and good connection to the support, the base body, however, with regard to the structural strength, the sliding properties and its corrosion resistance, each freely selectable during operation.
  • the clamp grip of the intermediate carrier on the base body which at the same time ensures a frictional connection and a positive fit, ensures that the intermediate carrier with the support under the centrifugal forces and also the forces of the web can no longer be detached from the base body, but on the other hand the intermediate carrier for assembly and repair can be deducted from the base body by replacing it.
  • the frictional engagement of the clamp handle acts predominantly in the longitudinal direction of the base body and prevents the reaction forces occurring in the longitudinal direction of the profile strip from displacing the intermediate carrier on the base body when the web of material spreads out.
  • the clamp handle saves additional security measures between the both parts.
  • the measures of claim 3 are advantageous.
  • the three materials in the combined composition offer the best prerequisites in terms of effectiveness.
  • the feature of claim 4 is also important for the cost-effective production.
  • Such continuous profile strands in particular extruded profiles, are inexpensive and can be produced to size, are easy to store and ship. Cutting the required sections to length does not require any special tools and can also be carried out directly at the location of the profile strip.
  • the shape accuracy of the modern extrusion process ensures that the components fit together correctly at all times and that the clamp is firmly seated, which can only be removed by arbitrary removal.
  • these two components are even made together in an extruded profile, which is useful because of the good connectivity between hard PVC and soft PVC.
  • fix the support separately on the intermediate carrier by gluing.
  • the intermediate carrier takes over the holding function for the support without being necessary for the dimensional stability and the sliding property of the profile strip during operation. Therefore, the choice of material for the intermediate carrier can be based on an easy to manufacture, as strong and durable connection to the support.
  • the edition is reduced to one or more contact strips, each of which grips the web and pulls it into the desired position.
  • the contact strip can be designed on its free upper side only with a view to optimum grip on the web. Since the contact strip is attached to the intermediate carrier, which is preferably made of plastic, it is not subject to the restrictions that arise when elastic plastic material is connected to a relatively hard material, for example the metallic base body. Also for critical web qualities an optimal grip can be achieved from the profile strip to the web, whereby optimal grip for particularly sensitive webs also means a particularly gentle but effective power transmission.
  • the web does not have to come into contact with the free top of the intermediate carrier itself, so that the previously disturbing adhesive residues on the intermediate carrier no longer have a disruptive influence.
  • the additional measure of the contact strip on the one hand optimizes the grip, on the other hand the manufacture of the profile strip or the intermediate carrier with the contact strip can be simplified.
  • the positive connection between the contact strip and the intermediate carrier helps in the transmission of the torque.
  • the contact strip can be attached in the longitudinal groove with an adhesive that remains elastic after setting, which prevents hard adhesive contamination on the free surfaces.
  • the groove prevents glue from escaping at all.
  • the groove edge provides good support for the inserted contact strip.
  • the embodiment according to claim 7 has also proven to be very suitable, in which the contact strip is formed in one piece with the intermediate carrier and holds the web so far from the free upper side of the intermediate carrier that the web no longer comes into contact with the other components . It is favorable to provide the above contact strip with a surface structure. This could be done with a trailing knurled wheel during manufacture.
  • This cross-sectional shape can be realized with simple shapes.
  • the converging holding legs ensure that the profile strip sits well in the spreader roller with always low resistance to displacement.
  • the clamp grip of the legs offers a self-locking, firm fit, with sufficient tolerance, which is not least achieved by the non-binding bows.
  • the legs adapt approximately to the slope of the side wall from the web.
  • the webs have an approximately prism-shaped cross section, which is very easy to master in terms of production technology. With its convex curvature and in cooperation with the straight underside of the profile strip, the back ensures the desired linear support area. With slight tilting movements, which the profile strip can certainly exert on the web, the support area is shifted in the circumferential direction on the back of the web. This is irrelevant to the effective transfer of the spreading forces to the web; in view of the fact that the axial adjustment is always easy to move, this is a desirable effect.
  • the converging holding legs are supported by the centrifugal force on the converging flanks, provided that the profile strip is not pressed by the contact pressure of the web anyway in the linear support on the back of the web.
  • the selected cross-sectional shape is also favorable in terms of production technology, the assembly and disassembly of the profiled strips is particularly simple because they only have to be pushed or pulled off in the axial direction.
  • the feature of claim 11 is advantageous with regard to a good fit of the intermediate carrier on the base body and the displacement of the intermediate carrier on the base body that can be carried out with justifiable forces for mounting or repairing the profile strip.
  • the intermediate carrier When the intermediate carrier is pushed on, the strength of the convergence of its clamp legs is adapted by elastic deformation to the convergence of the holding legs of the base body and at the same time the desired adaptation is achieved.
  • a profile strip 1 is seated on an undercut web 2 of a support ring 3 of a web spreading roller (not shown) which is approximately trapezoidal in cross section.
  • the profile strip 1 has the shape indicated in FIG. 2 in a plan view.
  • the jacket of the spreader roller is formed by a plurality of profile strips 1 lying closely next to one another, which overlap in the central region of the spreader roller with finger-like end parts 27 and are pulled apart and pushed together again in the axial direction with each revolution of the spreader roller.
  • the web 29 on the spreading roller is thereby spread out. This is a common principle.
  • several support rings 3 are placed one behind the other in the spreading roller in the axial direction with aligned webs 2 in order to guide the profiled strips 1.
  • the profile strip 1 consists of an approximately C-shaped base body 4 in cross section, further of an intermediate carrier 5 pushed onto the base body 4 in the longitudinal direction with approximately the same, only slightly wider cross section than the base body 4, and one on an outside 13 of the Intermediate carrier 4 attached, frictional and elastic pad 6.
  • the base body 4 is e.g. made of stainless steel and is a cut section of an endless profile strand, expediently an extruded profile. It has a flat, straight back part 9 in cross-section, from which struts 8 holding legs 7 converging over arches 8 on both sides. The angle enclosed between each holding leg 7 and the back part 9 is approximately 57 ° in the embodiment shown.
  • the intermediate carrier 5 is e.g. from a section of an endless extruded profile made of hard PVC. It has a straight transverse web 12 in cross-section, from which struts 11 which converge over bends 11.
  • the clamp legs 10 are pressed against the holding legs 7 from the outside with pretension.
  • the broken line 25 indicates that the clamp leg 10 forms an angle ⁇ with the crossbar 12 when the intermediate carrier 5 is removed, which angle is smaller than the angle ⁇ .
  • the greatest width of the intermediate carrier 5 is indicated by B.
  • the support 6 has a convexly curved upper side 14, the radius of curvature expediently having the center of the axis of the spreading roller, not shown.
  • the support 6 ends on both edges immediately in front of the greatest width B of the intermediate carrier 5 with wedge-shaped tapered edge lips 15.
  • the edge lips 15 are flattened on the outside in the area 16.
  • a crescent-shaped free space 17 remains between each arch 11 of the intermediate support 5 and the adjacent arch 8 of the main body 4, which ensures a secure clamp fit of the intermediate support 5 on the main body 4.
  • the intermediate carrier 5 has only a line contact with the holding web 2.
  • the support 6 can be made in one piece with the intermediate carrier 5, for example be extruded.
  • the pad 6 suitably consists of soft PVC with a Shore hardness of approximately 60 °. But it is also conceivable to stick the pad 6 on the intermediate carrier 5. Since hard PVC and soft PVC can be connected to each other very firmly, the pad 6 has a high resistance to detachment.
  • the connection zone between the support 6 and the intermediate carrier 5 is indicated by 24.
  • the web 2 of the support ring 3 has a convexly curved back 18 about the axis of the spreader roller, not shown, on which the base body 4 rests with line contact 19, so that there are free spaces between the shoulders 22 in cross section of the web 2 and the base body 4 23 arise.
  • narrow gaps s are kept free between the inner sides of the holding legs 7 and the side walls 20 of the web 2.
  • a recess 21 adjoins the side walls 20, which leads to the adjacent side wall 20, not shown, of the next web 2. This configuration allows the profiled strips 1 to be placed very close together, so that they may even touch with their arches 11 during operation.
  • Fig. 2 it is indicated at 26 how each profile strip 1 is coupled with an axial displacement drive.
  • the intermediate support 5 connected to the support 6 is pushed onto the base body 4 in the longitudinal direction thereof, so that it is fixed with a clamp grip on the holding legs 7 and the back 28 of the base body 4.
  • This clamp grip prevents the intermediate carrier 5 from lifting too far from the base body 4 under centrifugal forces.
  • the clamp handle causes the intermediate carrier 5 to be held in the longitudinal direction of the profile strip I, which ensures the correct transmission of the spreading forces to the web 29.
  • the clamp grip allows the intermediate carrier 5 with the support 6 to be pushed on with a reasonable amount of force and to be removed again for replacement.
  • the intermediate carrier 5 is advantageously cut with the support 6 from an endless extruded profile in the length just required.
  • FIG. 3 shows a profile strip 1 without a base body 4.
  • a support made of elastic plastic material with a convex top is attached by gluing, which extends to the lateral shoulders 32 of the intermediate carrier 5.
  • a single wide longitudinal groove 30 is formed in the plastic support 6, into which a contact strip K is glued.
  • the strenght s of the contact strip K is selected such that the longitudinal edges of the contact strip K, designated 33, protrude slightly beyond the support 6.
  • the longitudinal grooves 30 are already formed in the intermediate carrier 5 and are arranged in such a way that the distance between the grooves 30 corresponds approximately to the groove width B.
  • a contact strip K made of flexible material is inserted in each longitudinal groove 30 and fastened with adhesive.
  • This embodiment saves the elastic support 6 according to FIG. 1 and replaces it with the inserted contact strips K.
  • the side edges 35 of the contact strips K are supported on the groove edges 36.
  • the adhesive therefore only needs to be provided centrally under the contact strip K, so that it does not swell out at the side edges.
  • the free upper sides 14 of the contact strips K protrude from the surface of the intermediate carrier 5 and they are designed with regard to optimum grip for the web 29, e.g. profiled or sticky or provided with a textile structure.
  • the contact strips K can expediently consist of a carrier material with a mohair layer on the top.
  • the intermediate body 5 sits with its clamp legs 10 on the base body 4 and covers the back part 9 and its holding leg 7.
  • the contact strips K are formed in one piece with the intermediate carrier 5, for example by extrusion.
  • the free top of the contact strips can in turn be profiled or sticky or provided with a textile structure.
  • the free upper sides 14 of the two contact strips K are either flat and roof-shaped in relation to one another or slightly cambered.
  • the web W is slightly drawn into the intermediate space 34 and also on both sides of the contact strips when running over the profile strip, as a result of which the grip on the free upper sides 14 is increased.

Abstract

A profiled rod for a web-spreading roller has an elongated basic body of approximately C-shaped cross-section with holding legs on both sides and with a friction-grip elastic support on its back. The support (6) is fastened to an intermediate support (5) made of stiffer material than the support (6) itself and the intermediate support (5) is pushed lengthwise onto the basic body (4) and detachably fastened to its back (28) and holding legs (7) with a clamping claw.

Description

Die Erfindung betrifft eine Profilleiste der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a profile strip of the type specified in the preamble of claim 1.

Eine aus der DE-OS 24 00 741 bekannte Profilleiste dieser Art besteht aus einem Lamellenkörper aus Aluminium, der mit einer elastomeren Oberflächenschicht versehen ist. Die Herstellung der beiden Teile der Profilleiste ist aufwendig. Das Anbringen der Oberflächenschicht erfordert außerordentliche Sorgfalt und ist deshalb zeitaufwendig. Ein Erneuern der Oberflächenschicht läßt sich kaum durchführen, so daß eine verschlissene Profilleiste durch eine neue ersetzt werden muß. Die Oberflächenschicht neigt insbesondere in den Randbereichen zum Ablösen unter den durch die Warenbahn ausgeübten Kräften.A profile strip of this type known from DE-OS 24 00 741 consists of a lamellar body made of aluminum, which is provided with an elastomeric surface layer. The production of the two parts of the profile strip is complex. The application of the surface layer requires extraordinary care and is therefore time-consuming. The surface layer can hardly be renewed, so that a worn profile strip must be replaced by a new one. The surface layer tends to peel off especially under the forces exerted by the web.

Es ist ferner aus der Praxis eine Profilleiste bekannt, die aus einer C-förmigen Metallschiene mit klauenförmig eingebogenen Halteschenkeln und einer auf den geraden Rücken aufgeklebten Auflage besteht. Die Auflage ist ein Kunststoff-Haftbeleg in Form eines einseitig klebenden Klebestreifens. Die Ränder der Auflage müssen in einem Abstand von den Rändern des Rückens enden, weil dort die Klebekraft nicht ausreicht und sich die Auflage ablösen kann. Die zur Kraftübertragung auf die Warenbahn nutzbare Fläche ist beschränkt; die Haltbarkeit der Auflage läßt zu wünschen übrig, weil die Zentrifugalkraft an der Auflage arbeitet. Das Anbringen oder Austauschen der Auflage zu Reparaturzwecken ist mühsam. Oftmals wird zusätzlich Klebstoff benutzt, um die Klebekraft der Auflage zu erhöhen.It is also known from practice a profile bar, which consists of a C-shaped metal rail with claw-shaped bent-in legs and a support glued to the straight back. The pad is a plastic adhesive slip in the form of a single-sided adhesive strip. The edges of the pad must end at a distance from the edges of the back, because there the adhesive strength is insufficient and the pad can peel off. The area usable for power transmission to the web is limited; the durability of the pad leaves something to be desired because the centrifugal force works on the pad. Attaching or replacing the pad for repairs is tedious. Additional adhesive is often used to increase the adhesive strength of the pad.

Es ist ferner aus der DE-C-3 518 568 ein Profilbandabschnitt aus einem elastischen Material bekannt, der nur annähernd wie eine Profilleiste arbeitet, denn der Bandabschnitt ist elastisch und bietet die seitliche Versetzung durch die Dehnung des Bandabschnitts. Im übrigen greift der C-förmig ausgebildete Profilabschnitt um die Seitenränder eines Querstegs. Die Oberseite des Bandabschnitts ist zur besseren Haftung aufgerauht oder mit einer rutschfesten Beschichtung versehen.It is also known from DE-C-3 518 568 a profile strip section made of an elastic material which only works approximately like a profile strip, because the strip section is elastic and offers lateral displacement due to the stretching of the strip section. Furthermore the C-shaped profile section engages around the side edges of a crossbar. The top of the tape section is roughened for better adhesion or provided with a non-slip coating.

Der Erfindung liegt die Aufgabe zugrunde, eine Profilleiste der eingangs genannten Art zu schaffen, die trotz der groben Arbeitsbedingungen beim Ausbreiten von Warenbahnen haltbar ist und sich durch eine kostengünstige Herstellung und eine leichte Montage bzw. Reparaturmöglichkeit auszeichnet.The invention has for its object to provide a profile strip of the type mentioned, which is durable despite the rough working conditions when spreading webs and is characterized by an inexpensive manufacture and easy assembly and repair options.

Die gestellte Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale gelöst.The object is achieved according to the invention by the features specified in the characterizing part of patent claim 1.

Da bei dieser Ausbildung die Auflage unter Vermittlung des Zwischenträgers am für die Halterung verantwortlichen Grundkörper angebracht ist, läßt sich der Zwischenträger aus einem eine sehr feste Verbindung mit der Auflage eingehenden Material herstellen. Die Auflage kann sich deshalb vom Zwischenträger unter den von der Warenbahn ausgeübten Kräften nicht mehr ablösen. Die Auflage kann sich ferner über die gesamte lösbare Breite des Zwischenträgers erstrecken. Der Zwischenträger kann zusammen mit der Auflage ein vorgefertigtes Bauelement sein, das kostengünstig praktisch endlos hergestellt, dann auf die jeweils benötigte Länge abgelängt und nach Bedarf auf den Grundkörper aufgeschoben wird. Der Klammergriff des Zwischenträgers auf dem Grundkörper reicht aus, den Fliehkraften einerseits und den Kräften der Warenbahn andererseits zuverlässig zu widerstehen. Der Klammergriff hält den Zwischenträger mit der Auflage beim Arbeiten der Warenbahn-Ausbreitwalze auch in Längsrichtung sicher auf dem Grundkörper. Die Vorspannung wird so bemessen, daß das Aufziehen des Zwischenträgers einfach möglich ist, wie auch sein rasches Abziehen zu Reparaturzwecken. Aufgrund der einfachen, kostengünstigen Herstellbarkeit des Zwischenträgers mit seiner Auflage kann dieser bei verschlissener Auflage weggeworfen und durch einen neuen Abschnitt ersetzt werden. Günstig ist dabei, daß wegen des Klammergriffes keine Rücksicht auf die Materialpaarung zwischen dem Zwischenträger und dem Grundkörper genommen zu werden braucht, so daß das Material des Zwischenträgers im Hinblick auf die kostengünstige Herstellung und gute Verbindung mit der Auflage, des Grundkörpers hingegen hinsichtlich der Gestaltfestigkeit, der Gleiteigenschaften und seiner Korrosionsfestigkeit, jeweils im Betrieb frei wählbar ist.Since, in this embodiment, the support is attached to the base body responsible for the mounting with the intermediary of the intermediate carrier, the intermediate carrier can be produced from a material that is very tight to the support. The support can therefore no longer be detached from the intermediate support under the forces exerted by the web. The support can also extend over the entire detachable width of the intermediate carrier. The intermediate carrier together with the support can be a prefabricated component which can be produced practically endlessly inexpensively, then cut to the required length and pushed onto the base body as required. The grip of the intermediate carrier on the base body is sufficient to reliably withstand the centrifugal forces on the one hand and the forces of the web on the other hand. The clamp handle holds the intermediate carrier with the support securely on the base body even in the longitudinal direction when the web spreading roller is working. The pretension is dimensioned such that it is easy to pull on the intermediate carrier, as is its rapid removal for repair purposes. Due to the simple, inexpensive manufacture of the intermediate carrier with its support, it can be thrown away when the support is worn and replaced with a new section. It is favorable that due to the clamp handle no consideration needs to be given to the material pairing between the intermediate carrier and the base body, so that the material of the intermediate carrier with regard to the cost-effective production and good connection to the support, the base body, however, with regard to the structural strength, the sliding properties and its corrosion resistance, each freely selectable during operation.

Der gleichzeitig einen Kraftschluß und einen Formschluß gewährleistende Klammergriff des Zwischenträgers auf dem Grundkörper stellt gemäß Anspruch 2 sicher, daß sich der Zwischenträger mit der Auflage unter den Fliehkräften und auch den Kräften der Warenbahn nicht mehr vom Grundkörper lösen läßt, daß aber andererseits der Zwischenträger zur Montage und Reparatur durch Auswechseln vom Grundkörper abgezogen werden kann. Der Kraftschluß des Klammergriffs wirkt vorwiegend in Längsrichtung des Grundkörpers und verhindert, daß beim Ausbreiten der Warenbahn die in Längsrichtung der Profilleiste auftretenden Reaktionskräfte den Zwischenträger auf dem Grundkörper verschieben. Der Klammergriff erspart zusätzliche Sicherungsmaßnahmen zwischen den beiden Teilen.The clamp grip of the intermediate carrier on the base body, which at the same time ensures a frictional connection and a positive fit, ensures that the intermediate carrier with the support under the centrifugal forces and also the forces of the web can no longer be detached from the base body, but on the other hand the intermediate carrier for assembly and repair can be deducted from the base body by replacing it. The frictional engagement of the clamp handle acts predominantly in the longitudinal direction of the base body and prevents the reaction forces occurring in the longitudinal direction of the profile strip from displacing the intermediate carrier on the base body when the web of material spreads out. The clamp handle saves additional security measures between the both parts.

Im Hinblick auf die einfache und kostengünstige Herstellung, die leichte Montage und die Haltbarkeit der Profilleiste sind die Maßnahmen von Anspruch 3 vorteilhaft. Insbesondere bieten die drei Werkstoffe in der kombinierten Zusammensetzung die beste Voraussetzung in der Wirkung.In view of the simple and inexpensive manufacture, the easy assembly and the durability of the profile strip, the measures of claim 3 are advantageous. In particular, the three materials in the combined composition offer the best prerequisites in terms of effectiveness.

Für die kostengünstige Herstellung ist ferner das Merkmal von Anspruch 4 wichtig. Solche Endlosprofilstränge, insbesondere Strangpreßprofile sind preiswert und maßgenau herstellbar, gut lagerbar und versendbar. Das Ablängen der jeweils benötigten Abschnitte erfordert keine speziellen Werkzeuge und kann auch direkt am Einsatzort der Profilleiste vorgenommen werden. Die Formgenauigkeit der modernen Strangpreßverfahren sichert zu jeder Zeit ein korrektes Zusammenpassen der Komponenten und den gewünschten festen Klammersitz, der sich nur durch willkürliches Abziehen lösen läßt.The feature of claim 4 is also important for the cost-effective production. Such continuous profile strands, in particular extruded profiles, are inexpensive and can be produced to size, are easy to store and ship. Cutting the required sections to length does not require any special tools and can also be carried out directly at the location of the profile strip. The shape accuracy of the modern extrusion process ensures that the components fit together correctly at all times and that the clamp is firmly seated, which can only be removed by arbitrary removal.

Gemäß Anspruch 5 sind diese beiden Komponenten sogar gemeinsam in einem Strangpreßprofil hergestellt, was wegen der guten Verbindbarkeit zwischen Hart-PVC und Weich-PVC zweckmäßig ist. Denkbar ist es aber auch, die Auflage getrennt am Zwischenträger durch Aufkleben festzulegen. Auch hierbei ist es von Vorteil, daß der Zwischenträger die Haltefunktion für die Auflage übernimmt, ohne für die Formstabilität und die Gleiteigenschaft der Profilleiste im Betrieb nötig zu sein. Deshalb kann sich die Materialauswahl für den Zwischenträger nach einer einfach herstellbaren, möglichst festen und haltbaren Verbindung mit der Auflage richten.According to claim 5, these two components are even made together in an extruded profile, which is useful because of the good connectivity between hard PVC and soft PVC. However, it is also conceivable to fix the support separately on the intermediate carrier by gluing. It is also advantageous here that the intermediate carrier takes over the holding function for the support without being necessary for the dimensional stability and the sliding property of the profile strip during operation. Therefore, the choice of material for the intermediate carrier can be based on an easy to manufacture, as strong and durable connection to the support.

Es hat sich als besonders vorteilhaft erwiesen, die Profilleiste gemäß Anspruch 6 auszubilden. Die Auflage wird zu einem oder mehreren Kontaktstreifen reduziert, die jeweils die Warenbahn ergreifen und in die gewünschte Lage ziehen. Der Kontaktstreifen läßt sich an seiner freien Oberseite ausschließlich im Hinblick auf eine optimale Griffigkeit zur Warenbahn auslegen. Da der Kontaktstreifen am Zwischenträger angebracht ist, der vorzugsweise aus Kunststoff besteht, unterliegt er nicht den Einschränkungen, die sich beim Verbinden elastischen Kunststoffmaterials mit einem relativ harten Material beispielsweise des metallischen Grundkörpers ergeben. Auch für kritische Warenbahn-Qualitäten läßt sich eine optimale Griffigkeit von der Profilleiste zur Warenbahn erzielen, wobei unter optimaler Griffigkeit für besonders empfindliche Warenbahnen auch eine besonders schonende aber wirkungsvolle Kraftübertragung zu verstehen ist. Weil die Oberseite des Kontaktstreifens über die Oberseite des Zwischenträgers ragt, muß die Warenbahn mit der freien Oberseite des Zwischenträgers selbst überhaupt nicht in Kontakt kommen, so daß die bislang störenden Klebstoffreste am Zwischenträger keinen störenden Einfluß mehr haben. Es wird durch die Zusatzmaßnahme des Kontaktstreifens einerseits die Griffigkeit optimiert, andererseits läßt sich die Herstellung der Profilleiste bzw. des Zwischenträgers mit dem Kontaktstreifen vereinfachen. In Drehrichtung der Ausbreitwalze hilft der Formschluß zwischen dem Kontaktstreifen und dem Zwischenträger beim Ubertragen des Drehmoments. Aber auch in Längsrichtung ist eine große Übertragungsfläche zwischen dem Kontaktstreifen und der Aufnahme gegeben, so daß auch bei sehr hoher Griffigkeit der Kontaktstreifen nicht relativ zum Zwischenträger wandert. Der Kontaktstreifen läßt sich in der Längsnut mit einem nach dem Abbinden elastisch bleibenden Kleber anbringen, was harte Kleberverschmutzungen an den freien Flächen ausschließt. Die Nut verhindert, daß überhaupt Klebstoff herausdringt. Ferner gibt der Nutrand dem eingelegten Kontaktstreifen eine gute Abstützung.It has proven to be particularly advantageous to design the profile strip according to claim 6. The edition is reduced to one or more contact strips, each of which grips the web and pulls it into the desired position. The contact strip can be designed on its free upper side only with a view to optimum grip on the web. Since the contact strip is attached to the intermediate carrier, which is preferably made of plastic, it is not subject to the restrictions that arise when elastic plastic material is connected to a relatively hard material, for example the metallic base body. Also for critical web qualities an optimal grip can be achieved from the profile strip to the web, whereby optimal grip for particularly sensitive webs also means a particularly gentle but effective power transmission. Because the top of the contact strip protrudes over the top of the intermediate carrier, the web does not have to come into contact with the free top of the intermediate carrier itself, so that the previously disturbing adhesive residues on the intermediate carrier no longer have a disruptive influence. The additional measure of the contact strip on the one hand optimizes the grip, on the other hand the manufacture of the profile strip or the intermediate carrier with the contact strip can be simplified. In the direction of rotation of the spreading roller, the positive connection between the contact strip and the intermediate carrier helps in the transmission of the torque. But also in the longitudinal direction there is a large transmission area between the contact strip and the receptacle, so that the contact strip does not migrate relative to the intermediate carrier even with a very good grip. The contact strip can be attached in the longitudinal groove with an adhesive that remains elastic after setting, which prevents hard adhesive contamination on the free surfaces. The groove prevents glue from escaping at all. In addition, the groove edge provides good support for the inserted contact strip.

Es hat sich auch die Ausführungsform gemäß Anspruch 7 als sehr geeignet erwiesen, bei der der Kontaktstreifen mit dem Zwischenträger einstückig ausgebildet ist und die Warenbahn so weit von der freien Oberseite des Zwischenträgers abgehoben hält, daß die Warenbahn mit den anderen Komponenten nicht mehr in Kontakt gelangt. Dabei ist es günstig, dem vorstehenden Kontaktstreifen eine Oberflächenstrukturierung zukommen zu lassen. Dies könnte bei der Herstellung durch ein nachlaufendes Rändelrad erfolgen.The embodiment according to claim 7 has also proven to be very suitable, in which the contact strip is formed in one piece with the intermediate carrier and holds the web so far from the free upper side of the intermediate carrier that the web no longer comes into contact with the other components . It is favorable to provide the above contact strip with a surface structure. This could be done with a trailing knurled wheel during manufacture.

Ein weiterer, wichtiger Gesichtspunkt geht aus Anspruch 8 hervor. Die Strukturierung an der freien Oberseite des Kontaktstreifens erhöht die Griffigkeit zwischen der Profilleiste und der Warenbahn zusätzlich. Dabei können zwei verschiedene Aspekte realisiert werden. Bei groben und belastbaren Warenbahnen kann zusätzlich zum reinen Reibschluß ein Formschluß gewählt werden. Bei besonders empfindlichen Warenbahnqualitäten kann hingegen eine besonders schonende und trotzdem reibschlüssige Kraftübertragung vorbestimmt werden.Another important point of view emerges from claim 8. The structuring on the free top of the contact strip increases the grip between the profile strip and the web. Two different aspects can be realized. For coarse and resilient webs, a positive fit can be selected in addition to the pure frictional connection. In the case of particularly sensitive web qualities, on the other hand, a particularly gentle yet frictional power transmission can be predetermined.

Im Hinblick auf die einfache und kostengünstige Herstellung ist die Ausführungsform gemäß Anspruch 9 zweckmäßig. Diese Querschnittsform läßt sich mit einfachen Formen realisieren. Mit den konvergierenden Halteschenkeln wird ein guter Sitz der Profilleiste in der Ausbreitwalze bei stets geringem Verschiebewiderstand erreicht. Der Klammergriff der Schenkel bietet einen selbstsichernden, festen Sitz, mit ausreichender Toleranz, die nicht zuletzt auch von den freibleibenden Bögen erreicht wird. Die Schenkel passen sich annähernd der Schräge der Seitenwand vom Steg an.In view of the simple and inexpensive manufacture, the embodiment according to claim 9 is useful. This cross-sectional shape can be realized with simple shapes. The converging holding legs ensure that the profile strip sits well in the spreader roller with always low resistance to displacement. The clamp grip of the legs offers a self-locking, firm fit, with sufficient tolerance, which is not least achieved by the non-binding bows. The legs adapt approximately to the slope of the side wall from the web.

Eine für die Praxis besonders günstige Ausführungsform geht aus Anspruch 10 hervor. Die Stege haben annähernd prismenförmigen Querschnitt, der fertigungstechnisch sehr einfach zu beherrschen ist. Der Rücken stellt mit seiner konvexen Krümmung in Zusammenarbeit mit der geraden Unterseite der Profilleiste den gewünschten linienförmigen Auflagebereich sicher. Bei geringen Kippbewegungen, die die Profilleiste durchaus auf dem Steg ausüben kann, verlagert sich der Auflagebereich in Umfangsrichtung auf dem Rücken des Steges. Dies spielt für die wirksame Übertragung der Ausbreitkräfte auf die Warenbahn keine Rolle; im Hinblick auf die stets zu gewährleistende Leichtgängigkeit der axialen Verstellung ist dies ein wünschenswerter Effekt. Die konvergierenden Halteschenkel stützen sich unter der Fliehkraft an den konvergierenden Flanken ab, sofern die Profilleiste nicht durch den Auflagedruck der Warenbahn ohnedies in der linienförmigen Auflage auf den Rücken des Steges gedrückt wird. Die gewählte Querschnittsform ist auch in herstellungstechnischer Hinsicht günstig, die Montage und Demontage der Profilleisten gestaltet sich besonders einfach, weil diese nur in axialer Richtung aufgeschoben bzw. abgezogen zu werden brauchen.An embodiment which is particularly favorable in practice can be seen from claim 10. The webs have an approximately prism-shaped cross section, which is very easy to master in terms of production technology. With its convex curvature and in cooperation with the straight underside of the profile strip, the back ensures the desired linear support area. With slight tilting movements, which the profile strip can certainly exert on the web, the support area is shifted in the circumferential direction on the back of the web. This is irrelevant to the effective transfer of the spreading forces to the web; in view of the fact that the axial adjustment is always easy to move, this is a desirable effect. The converging holding legs are supported by the centrifugal force on the converging flanks, provided that the profile strip is not pressed by the contact pressure of the web anyway in the linear support on the back of the web. The selected cross-sectional shape is also favorable in terms of production technology, the assembly and disassembly of the profiled strips is particularly simple because they only have to be pushed or pulled off in the axial direction.

Im Hinblick auf einen guten Sitz des Zwischenträgers am Grundkörper und die mit vertretbaren Kräften durchführbare Verschiebung des Zwischenträgers auf dem Grundkörper zum Montieren oder Reparieren der Profilleiste ist das Merkmal von Anspruch 11 vorteilhaft. Beim Aufschieben des Zwischenträgers wird die Stärke der Konvergenz seiner Klammerschenkel durch elastische Verformung an die Konvergenz der Halteschenkel des Grundkörpers angepaßt und gleichzeitig die erwünschte Anpassung erreicht.The feature of claim 11 is advantageous with regard to a good fit of the intermediate carrier on the base body and the displacement of the intermediate carrier on the base body that can be carried out with justifiable forces for mounting or repairing the profile strip. When the intermediate carrier is pushed on, the strength of the convergence of its clamp legs is adapted by elastic deformation to the convergence of the holding legs of the base body and at the same time the desired adaptation is achieved.

Anhand der Zeichnung wird eine beispielhafte Ausführungsform der Erfindung erläutert.An exemplary embodiment of the invention is explained with reference to the drawing.

Es zeigt:

Fig. 1
einen Querschnitt durch eine Profilleiste einer Warenbahn-Ausbreitwalze in betriebsbereitem Zustand,
Fig. 2
eine Draufsicht auf eine Profilleiste in abgenommenem Zustand,
Fig. 3
eine perspektive Ansicht einer Ausführungsform einer Profilleiste ohne Grundkörper,
Fig. 4
eine perspektive Ansicht einer anderen Ausführungsform einer Profilleiste und
Fig. 5
eine weitere Variante einer Profilleiste ohne Grundkörper in perspektiver Ansicht.
It shows:
Fig. 1
2 shows a cross section through a profile strip of a web spreading roller in the operational state,
Fig. 2
a plan view of a profile strip in the removed state,
Fig. 3
2 shows a perspective view of an embodiment of a profile strip without a base body,
Fig. 4
a perspective view of another embodiment of a profile strip and
Fig. 5
another variant of a profile strip without a base body in a perspective view.

Eine Profilleiste 1 sitzt auf einem im Querschnitt etwa trapezförmigen, hinterschnittenen Steg 2 eines Stützringes 3 einer Warenbahn-Ausbreitwalze (nicht gezeigt). Die Profilleiste 1 hat in einer Draufsicht die in Fig. 2 angedeutete Form. Der Mantel der Ausbreitwalze wird von einer Vielzahl dicht nebeneinanderliegender Profilleisten 1 gebildet, die sich im Mittelbereich der Ausbreitwalze mit fingerartigen Endteilen 27 überlappen und bei jedem Umlauf der Ausbreitwalze abwechselnd in axialer Richtung auseinandergezogen und wieder zusammengeschoben werden. Die Warenbahn 29 auf der Ausbreitwalze wird dadurch ausgebreitet. Dies ist ein übliches Prinzip. Üblicherweise sind in der Ausbreitwalze mehrere Stützringe 3 in Achsrichtung mit fluchtenden Stegen 2 hintereinandergesetzt, um die Profilleisten 1 zu führen.A profile strip 1 is seated on an undercut web 2 of a support ring 3 of a web spreading roller (not shown) which is approximately trapezoidal in cross section. The profile strip 1 has the shape indicated in FIG. 2 in a plan view. The jacket of the spreader roller is formed by a plurality of profile strips 1 lying closely next to one another, which overlap in the central region of the spreader roller with finger-like end parts 27 and are pulled apart and pushed together again in the axial direction with each revolution of the spreader roller. The web 29 on the spreading roller is thereby spread out. This is a common principle. Usually, several support rings 3 are placed one behind the other in the spreading roller in the axial direction with aligned webs 2 in order to guide the profiled strips 1.

Die Profilleiste 1 besteht aus einem im Querschnitt annähernd C-förmigen Grundkörper 4, ferner aus einem auf den Grundkörper 4 in Längsrichtung aufgeschobenen Zwischenträger 5 mit annähernd dem gleichen, nur etwas breiteren Querschnitt wie der Grundkörper 4, und einer auf einer Außenseite 13 des Zwischenträgers 4 angebrachten, reibungsaktiven und elastischen Auflage 6.The profile strip 1 consists of an approximately C-shaped base body 4 in cross section, further of an intermediate carrier 5 pushed onto the base body 4 in the longitudinal direction with approximately the same, only slightly wider cross section than the base body 4, and one on an outside 13 of the Intermediate carrier 4 attached, frictional and elastic pad 6.

Der Grundkörper 4 besteht z.B. aus Nirosta-Stahl und ist ein abgelängter Abschnitt eines Endlosprofilstranges, zweckmäßigerweise eines Strangpreßprofils. Er besitzt im Querschnitt einen ebenen, geraden Rückenteil 9, von dem über beidseitige Bögen 8 konvergierende, gerade Halteschenkel 7 abstreben. Der zwischen jedem Halteschenkel 7 und dem Rückenteil 9 eingeschlossene Winkel liegt bei der gezeigten Ausführungsform etwa bei 57°.The base body 4 is e.g. made of stainless steel and is a cut section of an endless profile strand, expediently an extruded profile. It has a flat, straight back part 9 in cross-section, from which struts 8 holding legs 7 converging over arches 8 on both sides. The angle enclosed between each holding leg 7 and the back part 9 is approximately 57 ° in the embodiment shown.

Der Zwischenträger 5 besteht z.B. aus einem Abschnitt eines endlosen Strangpreßprofils aus Hart-PVC. Er besitzt im Querschnitt einen geraden Quersteg 12, von dem über Bögen 11 konvergierende Klammerschenkel 10 abstreben. Die Klammerschenkel 10 werden mit Vorspannung an die Halteschenkel 7 von außen angepreßt. Die strichlierte Linie 25 deutet an, daß der Klammerschenkel 10 bei abgezogenem Zwischenträger 5 mit dem Quersteg 12 einen Winkel β einschließt, der kleiner ist als der Winkel α. Die größte Breite des Zwischenträgers 5 ist mit B angedeutet. Die Auflage 6 hat eine mit einem Bogen konvex gekrümmte Oberseite 14, wobei der Krümmungsradius zweckmäßigerweise als Mittelpunkt die Achse der nicht-gezeigten Ausbreitwalze hat. An beiden Rändern endet die Auflage 6 unmittelbar vor der größten Breite B des Zwischenträgers 5 mit sich keilförmig verjüngenden Randlippen 15. Die Randlippen 15 sind außen im Bereich 16 abgeflacht. Zwischen jedem Bogen 11 des Zwischenträgers 5 und dem benachbarten Bogen 8 des Grundkörpers 4 verbleibt ein sichelförmiger Freiraum 17, der einen sicheren Klammersitz des Zwischenträgers 5 auf den Grundkörper 4 gewährleistet. Der Zwischenträger 5 besitzt dadurch nur eine Linienberührung mit dem haltenden Steg 2.The intermediate carrier 5 is e.g. from a section of an endless extruded profile made of hard PVC. It has a straight transverse web 12 in cross-section, from which struts 11 which converge over bends 11. The clamp legs 10 are pressed against the holding legs 7 from the outside with pretension. The broken line 25 indicates that the clamp leg 10 forms an angle β with the crossbar 12 when the intermediate carrier 5 is removed, which angle is smaller than the angle α. The greatest width of the intermediate carrier 5 is indicated by B. The support 6 has a convexly curved upper side 14, the radius of curvature expediently having the center of the axis of the spreading roller, not shown. The support 6 ends on both edges immediately in front of the greatest width B of the intermediate carrier 5 with wedge-shaped tapered edge lips 15. The edge lips 15 are flattened on the outside in the area 16. A crescent-shaped free space 17 remains between each arch 11 of the intermediate support 5 and the adjacent arch 8 of the main body 4, which ensures a secure clamp fit of the intermediate support 5 on the main body 4. As a result, the intermediate carrier 5 has only a line contact with the holding web 2.

Die Auflage 6 kann mit dem Zwischenträger 5 in einem Stück gefertigt, z.B. stranggepreßt sein. Die Auflage 6 besteht zweckmäßigerweise aus Weich-PVC mit einer Shorehärte von annähernd 60°. Es ist aber auch denkbar, die Auflage 6 auf den Zwischenträger 5 aufzukleben. Da Hart-PVC und Weich-PVC sehr fest miteinander verbindbar sind, ist eine hohe Ablösefestigkeit für die Auflage 6 gegeben. Die Verbindungszone zwischen der Auflage 6 und dem Zwischenträger 5 ist mit 24 angedeutet.The support 6 can be made in one piece with the intermediate carrier 5, for example be extruded. The pad 6 suitably consists of soft PVC with a Shore hardness of approximately 60 °. But it is also conceivable to stick the pad 6 on the intermediate carrier 5. Since hard PVC and soft PVC can be connected to each other very firmly, the pad 6 has a high resistance to detachment. The connection zone between the support 6 and the intermediate carrier 5 is indicated by 24.

Der Steg 2 des Stützringes 3 hat einen um die nicht gezeigte Achse der Ausbreitwalze mit einem Kreisbogen konvex gekrümmten Rücken 18, auf dem der Grundkörper 4 mit Linienkontakt 19 anliegt, so daß zwischen den Schultern 22 im Querschnitt des Stegs 2 und dem Grundkörper 4 freie Räume 23 entstehen. Zwischen den Innenseiten der Halteschenkel 7 und den Seitenwänden 20 des Stegs 2 sind in dieser Lage enge Spalten s freigehalten. An die Seitenwände 20 schließt sich eine Ausnehmung 21 an, die zur benachbarten, nicht-gezeigten Seitenwand 20 des nächsten Stegs 2 führt. Durch diese Ausgestaltung lassen sich die Profilleisten 1 sehr dicht aneinandersetzen, so daß sie sich im Betrieb gegebenenfalls sogar mit ihren Bögen 11 berühren. In Fig. 2 ist mit 26 angedeutet, wie jede Profilleiste 1 mit einem Axial-Verschiebeantrieb gekuppelt wird.The web 2 of the support ring 3 has a convexly curved back 18 about the axis of the spreader roller, not shown, on which the base body 4 rests with line contact 19, so that there are free spaces between the shoulders 22 in cross section of the web 2 and the base body 4 23 arise. In this position, narrow gaps s are kept free between the inner sides of the holding legs 7 and the side walls 20 of the web 2. A recess 21 adjoins the side walls 20, which leads to the adjacent side wall 20, not shown, of the next web 2. This configuration allows the profiled strips 1 to be placed very close together, so that they may even touch with their arches 11 during operation. In Fig. 2 it is indicated at 26 how each profile strip 1 is coupled with an axial displacement drive.

Der mit der Auflage 6 verbundene Zwischenträger 5 ist in Längsrichtung des Grundkörpers 4 auf diesen aufgeschoben, so daß er mit einem Klammergriff an den Halteschenkeln 7 und dem Rücken 28 des Grundkörpers 4 festgelegt ist. Dieser Klammergriff verhindert, daß unter Zentrifugalkräften der Zwischenträger 5 vom Grundkörper 4 zu weit abhebt. Ferner bewirkt der Klammergriff einen Halt des Zwischenträgers 5 in Längsrichtung der Profilleiste I, der die einwandfreie Übertragung der Ausbreitkräfte auf die Warenbahn 29 sicherstellt. Der Klammergriff gestattet es jedoch, den Zwischenträger 5 mit der Auflage 6 mit vertretbarem Kraftaufwand aufzuschieben und zum Austauschen wieder abzuziehen. Der Zwischenträger 5 ist mit der Auflage 6 zweckmäßigerweise von einem endlosen Strangpreßprofil in der gerade benötigten Länge abgeschnitten.The intermediate support 5 connected to the support 6 is pushed onto the base body 4 in the longitudinal direction thereof, so that it is fixed with a clamp grip on the holding legs 7 and the back 28 of the base body 4. This clamp grip prevents the intermediate carrier 5 from lifting too far from the base body 4 under centrifugal forces. Furthermore, the clamp handle causes the intermediate carrier 5 to be held in the longitudinal direction of the profile strip I, which ensures the correct transmission of the spreading forces to the web 29. However, the clamp grip allows the intermediate carrier 5 with the support 6 to be pushed on with a reasonable amount of force and to be removed again for replacement. The intermediate carrier 5 is advantageously cut with the support 6 from an endless extruded profile in the length just required.

Selbst wenn die Profilleiste 1 unter dem Druck der Warenbahn auf dem Steg 2 kippt, wird im wesentlichen eine Dreipunktauflage beibehalten, die das leichtgängige Verschieben der Profilleiste 1 ermöglicht.Even if the profile bar 1 tilts under the pressure of the web on the web 2, a three-point support is essentially maintained, which enables the profile bar 1 to be moved easily.

Der Figur 3 ist eine Profilleiste 1 ohne Grundkörper 4 zu entnehmen. Auf dem Rücken bzw. Quersteg 12 des Zwischenträgers 5 ist eine Auflage aus elastischem Kunststoffmaterial mit einer bombierten Oberseite durch Kleben angebracht, die bis zu den seitlichen Schultern 32 des Zwischenträgers 5 reicht. Bei dieser Ausführungsform ist in der Kunststoffauflage 6 eine einzige breite Längsnut 30 eingeformt, in die ein Kontaktstreifen K eingeklebt ist. Die Stärke s des Kontaktstreifens K ist so gewählt, daß die mit 33 bezeichneten Längsränder des Kontaktstreifens K geringfügig über die Auflage 6 überstehen.FIG. 3 shows a profile strip 1 without a base body 4. On the back or transverse web 12 of the intermediate carrier 5, a support made of elastic plastic material with a convex top is attached by gluing, which extends to the lateral shoulders 32 of the intermediate carrier 5. In this embodiment, a single wide longitudinal groove 30 is formed in the plastic support 6, into which a contact strip K is glued. The strenght s of the contact strip K is selected such that the longitudinal edges of the contact strip K, designated 33, protrude slightly beyond the support 6.

Wie die Figur 4 zeigt, sind die Längsnuten 30 bereits in dem Zwischenträger 5 eingeformt und so angeordnet, daß der Abstand zwischen den Nuten 30 ungefähr der Nutenbreite B entspricht. In jeder Längsnut 30 ist ein Kontaktstreifen K aus weichelastischem Material eingelegt und mit Klebstoff befestigt. Man erspart sich bei dieser Ausführung die elastische Auflage 6 gemäß Figur 1 und ersetzt diese durch die eingelegten Kontaktstreifen K. Die Seitenränder 35 der Kontaktstreifen K stützen sich an den Nutenrändern 36 ab. Der Klebstoff braucht somit nur mittig unter dem Kontaktstreifen K vorgesehen werden, so daß er an den Seitenrändern nicht herausquillt. Die freien Oberseiten 14 der Kontaktstreifen K ragen aus der Oberfläche des Zwischenträgers 5 hervor und sie sind im Hinblick auf eine optimale Griffigkeit für die Warenbahn 29 ausgelegt, z.B. profiliert oder klebrig gestaltet oder mit einer Textilstrukturierung versehen. Zweckmäßigerweise können die Kontaktstreifen K aus einem Trägermaterial mit einer oberseitigen Mohairschicht bestehen. Der Zwischenkörper 5 sitzt mit seinen Klammerschenkeln 10 auf dem Grundkörper 4 und überfaßt dabei den Rückenteil 9 und dessen Halteschenkel 7.As FIG. 4 shows, the longitudinal grooves 30 are already formed in the intermediate carrier 5 and are arranged in such a way that the distance between the grooves 30 corresponds approximately to the groove width B. A contact strip K made of flexible material is inserted in each longitudinal groove 30 and fastened with adhesive. This embodiment saves the elastic support 6 according to FIG. 1 and replaces it with the inserted contact strips K. The side edges 35 of the contact strips K are supported on the groove edges 36. The adhesive therefore only needs to be provided centrally under the contact strip K, so that it does not swell out at the side edges. The free upper sides 14 of the contact strips K protrude from the surface of the intermediate carrier 5 and they are designed with regard to optimum grip for the web 29, e.g. profiled or sticky or provided with a textile structure. The contact strips K can expediently consist of a carrier material with a mohair layer on the top. The intermediate body 5 sits with its clamp legs 10 on the base body 4 and covers the back part 9 and its holding leg 7.

Bei der Ausführungsform gemäß Figur 5 sind die Kontaktstreifen K einstückig mit dem Zwischenträger 5 beispielsweise durch Extrudieren ausgebildet. Die freie Oberseite der Kontaktstreifen kann wiederum profiliert oder klebrig oder mit einer Textilstruktur versehen sein. Zwischen den beiden Kontaktstreifen K liegt ein Zwischenraum 34, dessen Breite annähernd der Kontaktstreifenbreite B entspricht. Die freien Oberseiten 14 der beiden Kontaktstreifen K sind entweder eben und dachförmig zueinander angestellt oder leicht bombiert. Die Warenbahn W wird beim Laufen über die Profilleiste in den Zwischenraum 34 und auch zu beiden Seiten der Kontaktstreifen geringfügig eingezogen, wodurch der Griff der freien Oberseiten 14 erhöht ist.In the embodiment according to FIG. 5, the contact strips K are formed in one piece with the intermediate carrier 5, for example by extrusion. The free top of the contact strips can in turn be profiled or sticky or provided with a textile structure. Between the two contact strips K there is an intermediate space 34, the width of which approximately corresponds to the contact strip width B. The free upper sides 14 of the two contact strips K are either flat and roof-shaped in relation to one another or slightly cambered. The web W is slightly drawn into the intermediate space 34 and also on both sides of the contact strips when running over the profile strip, as a result of which the grip on the free upper sides 14 is increased.

Claims (11)

  1. A profiled rod (1) for a roller for expanding a product web, with an elongate base body (4) that is displaceable in the longitudinal direction of the expanding roller and approximately C-shaped in cross-section, with holding sides (7) on both sides for mounting the profiled rod (1) on supporting rings (3) assigned to the roller axis, which body carries on its back (28) a friction-active resilient covering (6) extending in the longitudinal direction, characterized in that the covering (6) is mounted on an intermediate support (5) made of a more rigid material as compared with the covering (6), and that the intermediate support (5) is fitted onto the base body (4) in the longitudinal direction of the latter and is held on its back (28) and the holding sides (7) with a clamping grip.
  2. A profiled rod according to claim 1, characterized in that the clamping grip_of the intermediate support (5) is formed by a force fit and form fit, and that the force fit can be released by withdrawing the intermediate support (5) in the longitudinal direction of the base body (4).
  3. A profiled rod according to claim 1 or 2, characterized in that the base body (4) is a metallic section, the intermediate support (5) a synthetic hard material section and the covering (6) a synthetic soft material section.
  4. A profiled rod according to one of claims 1 to 3, characterized in that at least the intermediate support (5) and the covering (6) are sections of continuous profiled castings, preferably extruded profiled sections.
  5. A profiled rod according to one of claims 1 to 4, characterized in that the covering (6) is manufactured in one piece with the intermediate support (5) and is preferably bonded thereto.
  6. A profiled rod according to one of claims 1 to 5, characterized in that the covering (6) is inserted as a contact strip (K) and secured with a form fit in at least one longitudinal groove (30) provided in the intermediate support (5) and that it projects with its top (14).
  7. A profiled rod according to one of claims 1 to 5, characterized in that the covering (6) is formed by at least one narrow contact strip (K) which extends along the profiled rod (1) and is integrally connected to the intermediate support (5), for example, by extrusion.
  8. A profiled rod according to claim 6 or 7, characterized in that the free top (14) of the contact strip (K) has a textured shape, for example, a corrugation, a pile, wart-type projections or grooves.
  9. A profiled rod according to claim 1 or 3, characterized in that the base body (4) has in cross-section a straight back portion (9) and straight holding sides (7) projecting from the back portion (9) in a convergent direction via one arc (8) respectively, each of which sides forms an angle (α) of approximately 60° with the back portion (9).
  10. A profiled rod according to one of claims 1, 3 or 9 characterized in that the base body (4) bears with its back portion (9) in a straight line on the web (2) of the supporting ring (3), which web has a convex curvature in the radial direction, and that holding sides (7) come to bear, preferably in a linear contact, on the side wall (20) of the web (2).
  11. A profiled rod according to one of claims 9 and 10, characterized in that the intermediate support (5) has in cross-section a straight web (12) and straight clip sides (10) projecting in a convergent direction via one arc (11) each, which sides form an angle (β) with the transverse web (12) that is smaller than the angle (α).
EP90906944A 1989-05-05 1990-04-27 Profiled rod for a web-spreading roller Expired - Lifetime EP0423292B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3914766 1989-05-05
DE19893914766 DE3914766C1 (en) 1989-05-05 1989-05-05 Profile ledge for material spreading roll - has C-shaped base body shifting in longitudinal roll direction having holding arms fastenable to support rings, etc.
DE4008220A DE4008220A1 (en) 1989-05-05 1990-03-15 PROFILE BAR FOR A RAILWAY SPREADING ROLLER
DE4008220 1990-03-15

Publications (2)

Publication Number Publication Date
EP0423292A1 EP0423292A1 (en) 1991-04-24
EP0423292B1 true EP0423292B1 (en) 1993-12-22

Family

ID=25880592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906944A Expired - Lifetime EP0423292B1 (en) 1989-05-05 1990-04-27 Profiled rod for a web-spreading roller

Country Status (9)

Country Link
US (1) US5307973A (en)
EP (1) EP0423292B1 (en)
JP (1) JPH0629114B2 (en)
BR (1) BR9006759A (en)
DD (1) DD299598A7 (en)
DE (2) DE4008220A1 (en)
ES (1) ES2047929T3 (en)
PT (1) PT93963A (en)
WO (1) WO1990013503A1 (en)

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US7415881B2 (en) * 2004-08-19 2008-08-26 Fife Corporation Ultrasonic sensor system for web-guiding apparatus
US20060268290A1 (en) * 2005-05-25 2006-11-30 Thieme Gmbh & Co. Kg Printing table for flatbed printers
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US9415963B2 (en) 2013-01-30 2016-08-16 Fife Corporation Sensor controller for interpreting natural interaction sensor for web handling
ITMI20130354U1 (en) * 2013-10-15 2015-04-16 Meccaniche Crizaf S P A Costruzioni MOTOR ROLLER FOR CONVEYOR BELT EQUIPPED WITH HIGH FRICTION TOWARDS THE RIBBON
US9682838B2 (en) * 2015-03-19 2017-06-20 Pearl Technologies, Inc. Stationary idler roll with low coefficient of friction
IT201600104608A1 (en) * 2016-10-18 2018-04-18 Arioli S P A HANDLE FOR MACHINES FOR THE TREATMENT OF FABRICS AND MACHINE INCLUDING THE ASPO
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CN108531996A (en) * 2018-05-10 2018-09-14 潘晨馨 A kind of small electronic support of cotton pocket

Also Published As

Publication number Publication date
DE59003960D1 (en) 1994-02-03
DE4008220A1 (en) 1991-09-26
DD299598A7 (en) 1992-04-30
PT93963A (en) 1991-01-08
EP0423292A1 (en) 1991-04-24
JPH0629114B2 (en) 1994-04-20
ES2047929T3 (en) 1994-03-01
DE4008220C2 (en) 1993-06-17
WO1990013503A1 (en) 1990-11-15
BR9006759A (en) 1991-08-06
US5307973A (en) 1994-05-03
JPH03503275A (en) 1991-07-25

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