DD293083A5 - PROCESS FOR PRODUCING ROLLERS - Google Patents

PROCESS FOR PRODUCING ROLLERS Download PDF

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Publication number
DD293083A5
DD293083A5 DD90339090A DD33909090A DD293083A5 DD 293083 A5 DD293083 A5 DD 293083A5 DD 90339090 A DD90339090 A DD 90339090A DD 33909090 A DD33909090 A DD 33909090A DD 293083 A5 DD293083 A5 DD 293083A5
Authority
DD
German Democratic Republic
Prior art keywords
end pieces
piece
plastic
hose
annular grooves
Prior art date
Application number
DD90339090A
Other languages
German (de)
Inventor
Siegfried Schuetz
Heinz Kretschmer
Original Assignee
Pentacon Dresden Kamera- Und Kinowerke,De
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
Application filed by Pentacon Dresden Kamera- Und Kinowerke,De filed Critical Pentacon Dresden Kamera- Und Kinowerke,De
Priority to DD90339090A priority Critical patent/DD293083A5/en
Publication of DD293083A5 publication Critical patent/DD293083A5/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4895—Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • B29C65/542—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts by injection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • B29C65/548—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts by capillarity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
    • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
    • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
    • B29L2031/326—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing made wholly of plastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Herstellung von Walzen durch Verbinden eines aus einem Metallrohr bestehenden Grundkoerpers mit zwei Endstuecken aus Kunststof oder Metall und UEberziehen mit einem Schlauchstueck aus einem plastischen oder elastischen Stoff, wobei die Endstuecken mit Ringnuten versehen werden. Zwecks Erreichung einer dauerhaften und chemikaliendichten Verbindung zwischen den Endstuecken und dem Schlauchstueck wird das Schlauchstueck ueber jeder Ringnut mit mindestens einem Durchbruch versehen, und Loesungsmittel oder Klebstoff mittels einer Kanuele durch den Durchbruch in die Ringnuten gespritzt.{Walzen; Grundkoerper; Endstuecken; Schlauchstueck; Stoff, plastisch, elastisch; Durchbruch; Loesungsmittel; Klebstoff; Kanuele, gespritzt; Ringnuten}The invention relates to a method for the production of rolls by joining a consisting of a metal tube Grundkoerpers with two end pieces made of plastic or metal and Uberziehen with a Schlauchstueck of a plastic or elastic material, wherein the end pieces are provided with annular grooves. To achieve a permanent and chemical-tight connection between the end pieces and the hose piece, the hose piece over each annular groove is provided with at least one opening, and solvent or adhesive is injected by means of a canoe through the opening into the annular grooves. Grundkoerper; finials; Schlauchstueck; Fabric, plastic, elastic; Breakthrough; Solvent; Adhesive; Canoe, sprayed; ring grooves}

Description

Ringnuten gespritzt wird. Vorzugsweise wird mindestens so viel Lösungsmittel oder Klebstoff eingespritzt, daß der Raum der Ringnuten ausgefüllt wird. Sofern der Werkstoff, aus dem das Schlauchstück besteht, es zuläßt, wird der Durchbruch durch Einstich mit der Kanüle erzeugt.Ring grooves is injected. Preferably, at least as much solvent or adhesive is injected that the space of the annular grooves is filled. If the material from which the piece of tubing is made, it allows, the breakthrough is generated by puncture with the cannula.

Mit der Erfindung wird auf einfache Weise eine feste und chemikaliendichte Verklebung zwiochen den Endstücken und dem Schlauchstück erreicht.With the invention, a solid and chemical-tight bonding zwiochen the end pieces and the hose piece is achieved in a simple manner.

Ausführungsbeispielembodiment

Die Erfifidung wird nachstehend anhand eines Ausführungsbeispiels näher erläutert. In der zugehörigen Zeichnung ist die Ausführung des Verfahrens schematisch dargestellt, wobei eine Walze im Schnitt angedeutet ist.The Erfifidung will be explained below with reference to an embodiment. In the accompanying drawing, the execution of the method is shown schematically, wherein a roller is indicated in section.

In einem Grundkörper 1, der aus einem Rohrstück aus Hartaluminium besteht, ist ein Endstück 2 aus Hart-PVC eingesetzt. Das Endstück 2 ragt zum Teil aus dem Innern des Grundkörpers 1 heraus und erweitert sich dabei auf den Außendurchmesser des Grundkörpers 1. In ein mittiges Sackloch des Endstückes 2 ist ein Lagerzapfen 3 eingesetzt. Umfänglich besitzt das Endstück 2 eine Ringnut 4. Am anderen Ende des Grundkörpers 1, welches nicht dargestellt ist, befindet sich ein gleiches Endstück mit einem Lagerzapfen und einer umfänglichen Ringnut.In a base body 1, which consists of a piece of pipe made of hard aluminum, an end piece 2 made of hard PVC is used. The end piece 2 projects in part out of the interior of the main body 1 and thereby expands to the outer diameter of the base body 1. In a central blind hole of the end piece 2, a bearing pin 3 is inserted. At the other end of the base body 1, which is not shown, there is a same end piece with a bearing pin and a circumferential annular groove.

Die Länge der Walze ergibt sich somit aus der Länge des Grundkörpers 1 zuzüglich der Länge der aus dem Grundkörper herausragenden Teile der Endstücke 2. Über diese Länge trägt die Walze einen Bezug 5 aus Weich-PVC, der zweckmäßigerweise durch Überziehen eines entsprechend langen Schlauchstückes gebildet wird. Durch diesen Bezug 5 hindurch wird eine Kanüle 6 hindurchgestochen, bis sie den durch die Ringnut 4 und den Bezug 5 begrenzten Hohlraum erreicht hat. Durch diese Kanüle 6 wird in den Hohlraum Cyclohexanon 7 gespritzt, bis der Hohlraum ausgefüllt ist. Durch die Kapillarwirkung wird erreicht, daß die Fläche zwischen dem Endstück 2 und dem Bezug 5 auch mit Cyclohexanon 7 benetzt wird. Das Cyclohexanon bewirkt ein Anlösen der benetzten Oberflächen und in dessen Folge ein festes Haften ohne Lücken, so daß zwischen dem Endstück 2 und dem 8ezug 5 eine chemikaliendichte Verbindung erreicht wird. Der nach dem Entfernen der Kanüle 6 zurückbleibende Einstich füllt sich auch mit Cyclohexanon, wodurch er verschlossen wird. Anstelle von Cyclohexanon kann auch ein anderes Lösungsmittel angewendet werden. Die Auswahl wird sich nach den Werkstoffen richten, aus denen das Endstück 2 und der Bezug 5 besteht. Statt eines Lösungsmittels kann auch ein Klebstoff verwendet werden.The length of the roller thus results from the length of the main body 1 plus the length of the protruding from the body parts of the end pieces 2. Over this length, the roller carries a cover 5 made of soft PVC, which is advantageously formed by coating a correspondingly long length of hose , Through this reference 5 through a cannula 6 is pierced until it has reached the limited by the annular groove 4 and the reference 5 cavity. Through this cannula 6 is injected into the cavity cyclohexanone 7 until the cavity is filled. The capillary effect ensures that the surface between the end piece 2 and the cover 5 is also wetted with cyclohexanone 7. The cyclohexanone causes a dissolution of the wetted surfaces and as a result, a firm adhesion without gaps, so that between the end piece 2 and the 5zuge a chemical-tight compound is achieved. The puncture remaining after removal of the cannula 6 also fills with cyclohexanone, thereby closing it. Instead of cyclohexanone, another solvent can also be used. The selection will depend on the materials of which the tail 2 and the reference 5 consists. Instead of a solvent, an adhesive may also be used.

Claims (3)

1. Verfahren zur Herstellung von Walzen durch Verbinden eines aus einem Metallrohr bestehenden Grundkörpers mit zwei Endstücken aus Kunststoff oder Metall und Überziehen mit einem Schlauchstück aus einem plastischen oder elastischen Stoff, wobei die Endstücken mit Ringnuten versehen sind, dadurch gekennzeichnet, daß das Schlauchstück über jede Ringnut mindestens einen Durchbruch erhält und Lösungsmittel oder Klebstoff mitteis einer Kanüle durch den Durchbruch in die Ringnuten gespritzt wird.1. A method for producing rolls by joining a consisting of a metal tube body with two end pieces made of plastic or metal and coating with a piece of hose made of a plastic or elastic material, wherein the end pieces are provided with annular grooves, characterized in that the piece of hose over each Ring groove receives at least one breakthrough and solvent or adhesive mitteis a cannula is injected through the opening in the annular grooves. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß so viel Lösungsmittel oder Klebstoff eingespritzt wird, daß der Raum der Ringnuten ausgefüllt wird.2. The method according to claim 1, characterized in that so much solvent or adhesive is injected, that the space of the annular grooves is filled. 3. Vorfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Durchbruch durch Einstich mit der Kanüle erzeugt wird.3. ancestor according to claim 1, characterized in that the breakthrough is produced by puncture with the cannula. Hierzu 1 Seite ZeichnungFor this 1 page drawing Anwendungsgebiet der ErfindungField of application of the invention Die Erfindung betrifft ein Verfahren zur Herstellung von Walzen durch Verbinden eines aus einem Metallrohr bestehenden Grundkörpers mit zwei Endstücken aus Kunststoff oder Metall und Überziehen mit einem Schlauchstück aus einem plastischen oder elastischen Stoff, wobei die Endstücken mit Ringnuten versehen werden.The invention relates to a method for the production of rolls by connecting a consisting of a metal tube body with two end pieces made of plastic or metal and coating with a piece of hose made of a plastic or elastic material, wherein the end pieces are provided with annular grooves. Charakteristik des bekannten Standes der TechnikCharacteristic of the known state of the art In fotografischen Durchlauf-Behandlungsgeräten ist es notwendig, die zu behandelnden fotografischen Materialien auf einer U-förmig gekrümmten oder einer geraden Bahn durch die Behandlungsbäder hindurchzuführen und von einem in das andere Bad zu übergeben. Zum Führen und Stützen wird eine Anzahl Transportwalzen benötigt, an die eine Reihe Anforderungen gestellt wird. Sie müssen eine glatte, aber trotzdem griffige Oberfläche besitzen, damit die fotografischen Materialien sicher und schonend transportiert werden. Weiterhin müssen sie chemikalienbeständig sein. Außerdem ist eine Minimierung ihrer Masse erforderlich, um dem Bedienungspersonal die Herausnahme der Walzensätze zwecks Reinigung zu erleichtern. Wegen der genannten Anforderungen haben sich Transportwalzen durchgesetzt, die einen Grundkörper aus einem Metallrohr besitzen. Besonders ist dazu ein Rohr aus Hartaluminium geeignet. Stirnseitig sind zwei Endstücke angesetzt, welche vorzugsweise aus Hartgummi oder Kunststoff, insbesondere Hart-PVC bestehen. Sie sind so beschaffen, daß sie jeweils einen in das Rohr hineinragenden Verbindungszapfen und einen erweiterten Teil mit einem Durchmesser gleich dem Außendurchmesser des Metallrohres besitzen. Gegenüber dem Verbindungszapfen ist jeweils ein Lagerzapfen aus Edelstahl in eine entsprechende Bohrung eingesetzt. Der so hergestellte Walzenkörper trägt einen Bezug aus Kautschuk oder einem thermoplastischen Kunststoff z. B. Weich-PVC. Sofern ein Kautschukbezug verwendet wird, wird eine feste Verbindung des Walzenkörpers mit dem Bezug durch Vulkanisieren erreicht. Dabei hat sich aber gezeigt, daß die Verbindung zwischen Bezug und Endstücken hinsichtlich der Flüssigkeitsdichtigkeit riskant ist, da durch die beim Vulkanisieren auftretende Erhitzung Luft entlang der Endstücken entweicht und die dadurch auftretenden Kanäle Undichtigkeiten hervorrufen. Die Folge ist das Eindringen von Chemikalien in das Innere und Korrosion des Grundkörpers.In continuous photographic processing equipment, it is necessary to pass the photographic materials to be treated through the treatment baths in a U-shaped or straight path and transfer them from one to the other. For guiding and supporting a number of transport rollers is required, to which a number of requirements is made. You must have a smooth, yet non-slip surface, so that the photographic materials are transported safely and gently. Furthermore, they must be resistant to chemicals. In addition, a minimization of their mass is required to facilitate the removal of the roller sets for the purpose of cleaning the operator. Because of the above requirements, transport rollers have prevailed, which have a base body made of a metal tube. Especially a tube made of hard aluminum is suitable. The end face two end pieces are attached, which preferably consist of hard rubber or plastic, in particular hard PVC. They are designed so that they each have a projecting into the tube connecting pin and an enlarged part with a diameter equal to the outer diameter of the metal tube. Opposite the connecting pin a bearing pin made of stainless steel is inserted into a corresponding bore. The roller body thus produced carries a cover made of rubber or a thermoplastic z. B. soft PVC. If a rubber cover is used, a firm connection of the roll body to the cover is achieved by vulcanization. However, it has been shown that the connection between the cover and end pieces is risky in terms of liquid tightness, as escaping through the heating occurring during vulcanization air escapes along the end pieces and cause the resulting channels leaks. The result is the penetration of chemicals into the interior and corrosion of the body. Es ist auch schon bekannt, die Endstücke im Bereich des größeren Durchmessers mit einer Ringnut zu versehen, danach den aus Metallrohr und Endstücken bestehenden Grundkörper mit einer Schicht aus einem flüssigen oder pastösen Elast zu versehen, die Schicht zu vulkanisieren, einen Weichmacher aufzutragen und dann ein Schlauchstück aus Kautschuk oder Gummi überzuziehen (DD-PS 232365). Dabei ist aber die Gefahr sehr groß, daß durch Lufteinschlüsse verbleibende Fehlstellen die Möglichkeit des Eindringens von Chemikalien lassen.It is also already known to provide the end pieces in the region of the larger diameter with an annular groove, then to provide the body consisting of metal tube and end pieces with a layer of a liquid or pasty Elast, to vulcanize the layer to apply a plasticizer and then a Cover rubber or rubber hose section (DD-PS 232365). However, the danger is very great that left through air pockets remaining defects the possibility of penetration of chemicals. Nach DD-PS 229516 wird vorgeschlagen, das aufgezogene Schlauchstück im Randbereich wieder anzuheben und unter den angehobenen Randbereich Kaltvulkanisat aufzutragen. Auch hier ist die Gefahr der Lufteinschlüsse gegeben. Des weiteren ist infolge der Dehnung des Randbereichs damit zu rechnen, daß sich das Schlauchstück nicht wieder vollständig an den Grundkörper anlegt und somit weitere Möglichkeiten für das Eindringen von Chemikalien gegeben sind.According to DD-PS 229516 it is proposed to raise the wound-up piece of tubing in the edge region again and to apply cold vulcanizate under the raised edge region. Again, the risk of air pockets is given. Furthermore, as a result of the expansion of the edge region, it is to be expected that the piece of tubing will not completely rejoin the base body and thus provide further possibilities for the penetration of chemicals. Ziel der ErfindungObject of the invention Es ist daher Zweck der Erfindung, eine dauerhafte und chemikaliendichte Verbindung zwischen den Endstücken und dem Schlauchstück zu erreichen.It is therefore an object of the invention to achieve a durable and chemical-tight connection between the end pieces and the hose piece. Darlegung des Wesens der ErfindungExplanation of the essence of the invention Der Erfindung liegt die Aufgabe zugrunde, die Endbereiche des Schlauchstückes nachträglich ohne Anheben zu verkleben. Erfindungsgemäß wird die Aufgabe gelöst, indem Lösungsmittel oder Klebstoff mittels einer Kanüle durch das überzogene Schlauchstück in die Ringnuten gespritzt wird. Vorzugsweise wird dies erreicht, indem das Schlauchstück über jeder Ringnut mindestens eine ι Durchbruch erhält und Lösungsmittel oder Klebstoff mittels einer Kanüle durch den Durchbruch in dieThe invention has for its object to subsequently bond the end portions of the hose piece without lifting. According to the invention the object is achieved by solvent or adhesive is injected by means of a cannula through the coated piece of tubing in the annular grooves. Preferably, this is achieved by at least one ι breakthrough receives the piece of tubing over each annular groove and solvent or adhesive by means of a cannula through the opening in the
DD90339090A 1990-03-27 1990-03-27 PROCESS FOR PRODUCING ROLLERS DD293083A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DD90339090A DD293083A5 (en) 1990-03-27 1990-03-27 PROCESS FOR PRODUCING ROLLERS

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007066110A1 (en) * 2005-12-06 2007-06-14 Epigem Limited Fine line bonding and/or sealing system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007066110A1 (en) * 2005-12-06 2007-06-14 Epigem Limited Fine line bonding and/or sealing system and method

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