CH673256A5 - Plastic band - for mfr. of helically wound pipe - Google Patents

Plastic band - for mfr. of helically wound pipe Download PDF

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Publication number
CH673256A5
CH673256A5 CH4362/87A CH436287A CH673256A5 CH 673256 A5 CH673256 A5 CH 673256A5 CH 4362/87 A CH4362/87 A CH 4362/87A CH 436287 A CH436287 A CH 436287A CH 673256 A5 CH673256 A5 CH 673256A5
Authority
CH
Switzerland
Prior art keywords
longitudinal
band
edge
ledge
groove
Prior art date
Application number
CH4362/87A
Other languages
German (de)
Inventor
Rachid Keldany
Original Assignee
Ametex Ag
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 Ametex Ag filed Critical Ametex Ag
Priority to CH4362/87A priority Critical patent/CH673256A5/en
Publication of CH673256A5 publication Critical patent/CH673256A5/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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • 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
    • B29C66/124—Tongue and groove 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
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12445—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue having the tongue on the side
    • 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
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4329—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms the joint lines being transversal but non-orthogonal with respect to the axis of said tubular articles, i.e. being oblique
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/128—Stepped joint cross-sections
    • 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
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30321—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of protusions belonging to at least one of the parts to be joined
    • 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
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Abstract

A pipe can be produced from an endless band of plastic material with grooves along both sides which are engaged in each other to form a helical line. The rigid PVC band has on the left end at a distance from the edge a groove with a bottom. The ledge has a top face with a triangular rib to concentrate the energy input on a narrower cross-section when welding ultrasonically. The right end is similarly designed; its ledge fits into the groove of the left end and vice versa. ADVANTAGE - This saves energy and ensures perfect tightness.

Description

BESCHREIBUNG DESCRIPTION

Die Erfindung betrifft ein aus Kunststoffmaterial bestehendes Band zurHerstellungvonRohrenimWickelverfahren durch Verbinden der Bandlängsränder entlang einer schraubenlinienförmig umlaufenden Naht, in welcher ein auf der einen Bandseite abgesetzt ausgebildeter linker Längsrand des Bandes und ein auf der anderen B andseite gegengleich ausgebildeter rechter Längsrand des Bandes formschlüssig ineinandergreifen. The invention relates to a band made of plastic material for the production of tubes in the winding process by connecting the longitudinal edges of the band along a helical circumferential seam, in which a left longitudinal edge of the band, which is offset on one side of the band, and a right longitudinal edge of the band, which is formed in the opposite manner on the other side, interlock positively.

Es ist bekannt, Rohre im Wickelverfahren unter Verwendung eines Profilbandes herzustellen, das an den beiden Rändern unterschiedlich gestaltet, beispielsweise an dem einen Rand mit einer Nut und an dem anderen Rand mit einem zur Nut passend ausgebildeten Steg versehen ist, so dass beim Wickeln dieses Bandes die unterschiedlich gestalteten Ränder ineinander greifen und eine schraubenlinienförmige Naht ergeben, die je nach den gestellten Anforderungen entweder ohne zusätzliche B ear- beitung durch Formschluss der Ränder zusammenhält oder durch Verkleben oder Verschweissen der Ränder zusätzlich noch bearbeitet wird. It is known to produce pipes in the winding process using a profiled strip which is designed differently on the two edges, for example is provided with a groove on one edge and with a web which is designed to match the groove on the other edge, so that when winding this strip the differently designed edges interlock and result in a helical seam that, depending on the requirements, either holds together without additional processing by form-fitting the edges or is additionally processed by gluing or welding the edges.

Für das Herstellen von Rohren nach diesem Wickelverfahren unter Verwendung von Kunststoffmaterial ist es auch bekannt, die Bandlängsränder mit Hilfe von Ultraschallschweissung zu verbinden. Die dafür erforderliche Wärme entsteht bekanntlich dabei unter mechanischer Schwingungseinwirkung als Folge von Reibungsverlusten in dem zu verbindenden Material. Zusätzlich muss ein Druck ausgeübt werden. For the manufacture of pipes according to this winding process using plastic material, it is also known to connect the longitudinal edges of the strip with the aid of ultrasonic welding. As is known, the heat required for this is generated under the action of mechanical vibrations as a result of friction losses in the material to be connected. In addition, pressure must be exerted.

Die der vorliegenden Erfindung zugrunde liegende Aufgabe bestand darin, die Wirtschaftlichkeit dieses Verfahrens zur Her stellung von Rohren wesentlich zu verbessern, indem man mit möglichst geringer elektrischer Energie und möglichst wenig Druck auskommt, um die Ränder des Bandmaterials in einer Naht zu verbinden, bei der auch auf eme zusätzliche Dichtung bei Vorliegen höchster Anforderungen ver#ichtet werden kann. Zu diesem Zweck muss das Band an seinen Längsrändern ultra schallgerecht gestaltet sein, damit die Wärmeentwicklung konzentriert in der Fügezone erfolgen und der aufzuwendende Druck optimal wirksam werden kann. Dies wird durch die Massnahmen nach Anspruch 1 erreicht.Die Querschnittsverjiin gung führt zu einer Konzentrierung der Energie und der Erwärmung und erlaubt damit ein schnelleres Schweissen bei geringe rer Druckanwendung, womit man eine grössere Wirtschaftlichkeit erzielt, und es erübrigt sich ausserdem eine separate Dichtung. Vorzugsweise ist die Querschnittsverjüngung als eine im Querschnitt dreieckförmige Erhebung auf der Mitte der Leisten aussenseite ausgebildet, die mit dem Nutgrund der Längsnut am anderen Bandlängsrand beim Wickeln des Bandes zur Anlage kommt. Das Band bestehtvorzugsweise aus durch Ultraschall verschweissbarem Kunststoffmaterial wie Hart-PVC. The object underlying the present invention was to significantly improve the economy of this method for the manufacture of pipes by using as little electrical energy and as little as possible Pressure comes out around the edges of the tape material in one To join a seam in which an additional seal can also be omitted if the highest requirements are met. For this purpose, the tape must be designed to be ultra sound-proof on its longitudinal edges so that the heat is concentrated in the joining zone and the one to be used Pressure can take effect optimally. This is through the Measures achieved according to claim 1. The cross-sectional reduction leads to a concentration of energy and heating and thus allows faster welding with less pressure application, which achieves greater economy, and a separate seal is also unnecessary. Preferably, the cross-sectional taper is as a Cross-section triangular elevation formed on the center of the strips on the outside, which comes to rest with the groove base of the longitudinal groove on the other longitudinal edge of the strip when winding the strip. The tape is preferably made of ultrasonically weldable plastic material such as rigid PVC.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher beschrieben. Die Zeichnung zeigt einen Querschnitt durch das Band zur Herstellung von Wickelrohren, in grösserem Massstab. An embodiment of the invention is described below with reference to the drawings. The drawing shows a cross section through the tape for the production of winding tubes, on a larger scale.

Das aus Kunststoffmaterial, vorzugsweise aus Hart-PVC bestehende Band 1 weist am linken Rand 2 einwärts im Abstand von der Aussenkante 3 eine Längsnut 4 mit einem Nutgrund 5 auf, gegenüber welchem eine zwischen der Längsnut 4 und der Aussenkante 3 ausgebildete längsverlaufende Leiste 6 nach oben vorsteht. The band 1 consisting of plastic material, preferably of hard PVC, has a longitudinal groove 4 with a groove base 5 on the left edge 2 inwards at a distance from the outer edge 3, opposite which a longitudinal bar 6 formed between the longitudinal groove 4 and the outer edge 3 is directed upwards protrudes.

Der gegenüberliegende Längsrand 7 des Bandes 1 ist gegengleich ausgebildet, wobei in übereinstimmender Weise eine Längsnut 4 im Abstand einwärts von der Aussenkante 3 des Bandes parallel zu einer danebenliegenden Leiste 6 verläuft, wobei der Unterschied zwischen dem linken Rand 2 und dem rechten Rand 7 des Bandes 1 darin besteht, dass die Längsnut 4 an dem einen Längsrand zur oberen Seite des Bandes und an dem anderen Längsrand zur unteren Seite des Bandes hin offen ist. The opposite longitudinal edge 7 of the band 1 is of opposite construction, in which case a longitudinal groove 4 runs parallel to an adjacent strip 6 at a distance inwards from the outer edge 3 of the band, the difference between the left edge 2 and the right edge 7 of the band 1 consists in that the longitudinal groove 4 is open on one longitudinal edge towards the upper side of the band and on the other longitudinal edge towards the lower side of the band.

Aufgrund dieser gegengleichen Ausbildung der beiden Längsränder2 und 7 des Bandes greifen beim schraubenlinienförmigen Wickeln des Bandes die beiden Längsränder formschlüssig ineinander, so dass die Leiste 6 am einen Längsrand in einer Längsnut 4 4 am anderen Längsrand des Bandes zu liegen kommt. Die Breite der Längsnut 4 ist daher nur geringfügig grösser als die Breite der Leiste 6, damit diese ineinandergreifen können. Bei der herzustellenden Verbindung der Längsränder greifen demnach zwei Leisten in zwei Längsnuten ein. Due to this opposite design of the two longitudinal edges 2 and 7 of the tape, the two longitudinal edges engage in a form-fitting manner when the tape is wound helically, so that the strip 6 comes to rest on one longitudinal edge in a longitudinal groove 4 4 on the other longitudinal edge of the tape. The width of the longitudinal groove 4 is therefore only slightly larger than the width of the bar 6 so that they can interlock. When the longitudinal edges are connected, two strips engage in two longitudinal grooves.

Damit beim Herstellen der Schweissnaht in dieser Fügezone eine Erwärmungslokalisierung erreicht wird, ist an der Leistenaussenseite 8, die beim Zusammenfügen einem Nutgrund 5 einer Längsnut 4 zugekehrt ist, eine Querschnittsverjüngung 9 vorgesehen. Diese Querschnittsverjüngung erstreckt sich entlang des Längsrandes des Bandes und ist auf der Längsmittellinie der Leiste 6 angeordnet und besteht aus einer mit der Leiste einstükkig ausgebildeten und vorzugsweise im Querschnitt dreieckförmigen Erhebung mit einem Scheitelwinkel von vorzugsweise 900. So that a heating localization is achieved when producing the weld seam in this joining zone, a cross-sectional taper 9 is provided on the outside of the strip 8, which faces a groove base 5 of a longitudinal groove 4 when it is joined. This cross-sectional taper extends along the longitudinal edge of the band and is arranged on the longitudinal center line of the strip 6 and consists of an elevation which is formed in one piece with the strip and is preferably triangular in cross section with an apex angle of preferably 900.

Ebenso ist aber auch eine oben abgerundete Form der Erhebung möglich, die symmetrisch zur Längsmittellinie ausgebildet ist. However, a rounded form of the elevation is also possible, which is symmetrical to the longitudinal center line.

Die Basis der im Querschnitt dreieckförmigen Erhebung 9 ist etwa gleich der halben Breite der Leistenaussenseite 8. Die Querschnittsverjüngung bewirkt eine Konzentrierung der Erwärmung in der Fügezone beim Verbinden der Längsränder des Bandes 1 durch Ultraschallschweissung, so dass die Herstellung von Rohren im Wickelverfahren durch Energieeinsparung wirtschaftlicher durchführbar ist. The base of the elevation 9, which is triangular in cross section, is approximately equal to half the width of the outside of the strip 8. The narrowing of the cross section causes the heating in the joining zone to be concentrated when the longitudinal edges of the strip 1 are connected by means of ultrasonic welding, so that the production of tubes in the winding process can be carried out more economically by saving energy is.

Claims (4)

PATENTANSPRÜCHEPATENT CLAIMS 1. Aus Kunststoffmaterial bestehendes Band zur Herstellung von Rohren im Wickelverfahren durch Verbinden der Bandlängsränder entlang einer schraubenlinienförmig umlaufenden Naht, in welcher ein auf der einen B andseite abgesetzt ausgebil deter linker Längsrand des Bandes und ein auf der anderen Bandseite gegengleich ausgebildeter rechter Längsrand des Bandes formschlüssig ineinander greifen, dadurch gekennzeichnet, dass an jedem Bandlängsrand (2, 7) eine im Abstand einwärts von der Aussenkante (3) verlaufende Längsnut (4) neben einer zwischen dieser und der Aussenkante parallel sich erstreckenden und gegenüber dem Nutgrund (5) der Längsnut (4) vorstehenden Leiste (6) ausgebildet ist, welche zum passenden Eingreifen in die Längsnut (4) am jeweils anderen Bandlängsrand (2, 7) bestimmt und zum Verbinden der Bandlängsränder durch Ultraschallschweissung an der beim Ineinandergreifen dem Nutgrund (5) zugewandten Leistenaussenseite (8) mit einer Querschnittsverjüngung (9) zwecks Erwärmungslokalisierung in der Fügezone versehen ist.1. Made of plastic material band for the production of pipes in the winding process by connecting the longitudinal band edges along a helical circumferential seam in which a left longitudinal edge of the band formed on the one side of the band and a right longitudinal edge of the band formed on the other side of the opposite side form-fitting intermesh, characterized in that on each longitudinal band edge (2, 7) a longitudinal groove (4) running inward from the outer edge (3) at a distance apart from a longitudinal groove (4) extending parallel to the outer edge and opposite the groove base (5) of the longitudinal groove ( 4) projecting ledge (6) is designed, which is intended for a suitable engagement in the longitudinal groove (4) on the other longitudinal edge of the strip (2, 7) and for connecting the longitudinal edges of the strip by ultrasonic welding on the outside of the ledge (8) facing the groove base (5) when they interlock ) with a cross-sectional taper (9) ks heating localization is provided in the joining zone. 2. Band nach Anspruch 1, dadurch gekennzeichnet, dass die Querschnittsverjüngung an der Leistenaussenseite (8) eine auf der Längsmittellinie derselben verlaufende, zu dieservorzugsweise im Querschnitt symmetrisch ausgebildete und zur Endkante hin schmäler werdende, mit der Leiste einstückig ausgebildete Erhebung (9) ist.2. Band according to claim 1, characterized in that the cross-sectional tapering on the outside of the ledge (8) is an elevation (9) running on the longitudinal center line thereof, which is preferably symmetrical in cross-section and narrows towards the end edge and is made in one piece with the ledge. 3. Band nach Anspruch 2, dadurch gekennzeichnet, dass die Erhebung (9) an der Leistenaussenseite (8) im Querschnitt dreieckförmig mit einem Scheitelwinkel von vorzugsweise 900 ausgebildet ist.3. Band according to claim 2, characterized in that the elevation (9) on the outside of the ledge (8) is triangular in cross section with an apex angle of preferably 900. 4. Band nach Anspruch 3, dadurch gekennzeichnet, dass die Basis der im Querschnitt dreieckförmigen Erhebung (9) etwa gleich der halben Breite der Leistenaussenseite (8) ist. 4. Band according to claim 3, characterized in that the base of the triangular cross-section elevation (9) is approximately equal to half the width of the strip outside (8).
CH4362/87A 1987-11-06 1987-11-06 Plastic band - for mfr. of helically wound pipe CH673256A5 (en)

Priority Applications (1)

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CH4362/87A CH673256A5 (en) 1987-11-06 1987-11-06 Plastic band - for mfr. of helically wound pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4362/87A CH673256A5 (en) 1987-11-06 1987-11-06 Plastic band - for mfr. of helically wound pipe

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CH673256A5 true CH673256A5 (en) 1990-02-28

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CH4362/87A CH673256A5 (en) 1987-11-06 1987-11-06 Plastic band - for mfr. of helically wound pipe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975494A2 (en) 2007-03-27 2008-10-01 REHAU AG + Co Helical support
DE102015114765A1 (en) * 2015-09-03 2017-03-09 Airbus Operations Gmbh Method for producing and connecting two extended sections of an aircraft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975494A2 (en) 2007-03-27 2008-10-01 REHAU AG + Co Helical support
EP1975494A3 (en) * 2007-03-27 2011-03-16 REHAU AG + Co Helical support
DE102015114765A1 (en) * 2015-09-03 2017-03-09 Airbus Operations Gmbh Method for producing and connecting two extended sections of an aircraft

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