DE2462343C3 - Device for producing a cylindrical sleeve from a thermoplastic film - Google Patents
Device for producing a cylindrical sleeve from a thermoplastic filmInfo
- Publication number
- DE2462343C3 DE2462343C3 DE2462343A DE2462343A DE2462343C3 DE 2462343 C3 DE2462343 C3 DE 2462343C3 DE 2462343 A DE2462343 A DE 2462343A DE 2462343 A DE2462343 A DE 2462343A DE 2462343 C3 DE2462343 C3 DE 2462343C3
- Authority
- DE
- Germany
- Prior art keywords
- film
- piece
- mandrel
- overlapping
- cover
- 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
Links
Classifications
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- 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
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/40—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles
- B29C53/42—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles using internal forming surfaces, e.g. mandrels
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- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces 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
- B29C66/10—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
- B29C66/40—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
- B29C66/49—Internally supporting the, e.g. tubular, article during joining
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- 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
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- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/822—Transmission mechanisms
- B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Making Paper Articles (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Eine derartige gattungsgemäße Vorrichtung ist aus der DE-OS 22 50 638 bekannt Danach wird ein rechtekkiger Zuschnitt der thermoplastischen Folie durch Vakuumdüsen von einem zylindrischen Dorn erfaßt und aufgewickelt Die Abmessung von Dorn und Zuschnitt sind so aufeinander abgestimmt, daß sich die Ränder des Zuschnitts nach dem Aufwickeln auf dem Dorn etwas überlappen. Die überlappenden Ränder werden dann unter Wärmeeinwirkung verschweißt. Dabei werdenSuch a generic device is known from DE-OS 22 50 638. Thereafter, a rectangular Cutting of the thermoplastic film detected by vacuum nozzles from a cylindrical mandrel and wound up The dimensions of the mandrel and blank are coordinated so that the edges of the Overlap the blank slightly after winding it onto the mandrel. The overlapping edges are then welded under the influence of heat. Be there
.to Wärme und Druck gleichzeitig durch einen beheizten Schweißkopf aufgebracht. Dabei zeigt sich als nachteilig, daß dieser Schweißkopf sehr lange an die Naht gehalten werden muß, bis die Wärme die obenliegende Wand der Folie durchdringt und zur Schweißzone ge-.to heat and pressure simultaneously through a heated one Weld head applied. It turns out to be disadvantageous that this welding head was held against the seam for a very long time until the heat penetrates the overlying wall of the foil and reaches the welding zone.
Λ5 langtΛ5 is enough
Bei der in der US-PS 36 73 033 beschriebenen Vorrichtung zur Herstellung einer zylindrischen Hülse wird ebenfalls ein rechteckiges Folienstück auf einen zylindrischen Dorn gewickelt und dort festgehalten. Die sich überlappenden Kanten des Folienstückes werden auf Schweißtemperatur erhitzt und gegeneinander gedrückt Aul diese Weise entsteht eine flüssigkeitsdichte Längsnaht. Zur Erwärmung der überlappenden Kanten, welche bei der bekannten Vorrichtung durch Strahlungswärme erfolgt ist es erforderlich, daß die Kanten voneinander abgehoben werden. Hierbei verläßt sich die bekannte Vorrichtung vollständig auf die Eigenelastizität der Folie. Diese kann jedoch bei der Erweichung durch den heizenden Strahler verlorengehen. In diesem Fall ist dann nicht mehr gewährleistet daß der Abstand zwischen den beiden überlappenden Kanten erhalten bleibtIn the device described in US Pat. No. 3,673,033 for producing a cylindrical sleeve also a rectangular piece of film wound on a cylindrical mandrel and held there. Which Overlapping edges of the piece of film are heated to welding temperature and pressed against each other This creates a liquid-tight longitudinal seam. To warm the overlapping edges, which takes place in the known device by radiant heat, it is necessary that the edges be lifted from each other. Here, the known device relies completely on its inherent elasticity the slide. However, this can be lost when softened by the heating radiator. In this In this case, it is no longer guaranteed that the distance between the two overlapping edges is maintained remain
Der britischen Patentschrift 13 09 941 ist zu entnehmen, wie ein Klebstoff, der zur Verbindung von zweiBritish Patent 13 09 941 shows how an adhesive is used to connect two
ss Karton-Elementen dient, thermisch reaktiviert werden kann. Hierbei wird jedoch keine flüssigkeitsdichte Naht hergestellt. Die Aufbringung eines definierten Drucks ist nicht erforderlich, solange nur die zu verbindenden Teile in Berührung gebracht werden.ss cardboard elements are used, can be thermally reactivated. In this case, however, there is no liquid-tight seam manufactured. The application of a defined pressure is not necessary as long as only the ones to be connected Parts are brought into contact.
W) Die US-PS 3G 10 114 beschreibt ein Verfahren zum Verschließen einer Schachtel, bei dem ein Folienstück um einen Dorn gewickelt wird und die überlappenden Endabschnitte von innen her auf Schweißtemperatur erwärmt und danach zusammengedrückt werden. Fer-W) The US-PS 3G 10 114 describes a method for Closing a box in which a piece of film is wrapped around a mandrel and the overlapping End sections are heated from the inside to welding temperature and then pressed together. Fer-
Iis ncr wird bei diesem Verfahren ein Strom heißer Lufi /.wischen die überlappenden lindabschniite derart gerichtet, daß der obenliegende nacheilende Endabschnitt abgehoben wird und die beiden Endabschnitte eine V-In this process, a stream of hot air is used /. wipe the overlapping lind sections in such a way that that the overhead trailing end section is lifted off and the two end sections have a V-
förmige Tasche bilden, in weiche die heiße Luft einströmt und dadurch das thermoplastische Material erhitzt Zur Bildung und zum Offenhalten der V-förmigen Tasche werden zusätzlich ein Bügel und ein Führungsblech benötigt sForm a shaped pocket into which the hot air flows and thereby heating the thermoplastic material to form and hold open the V-shaped Bag, a bracket and a guide plate are also required s
Die Vorrichtungen des Standes der Technik weisen entweder den Nachteil auf, daß die Schweißzeiten wegen der doppelten Materialdicke der überlappenden Enden zu lang sind, oder benötigen zusätzliche Führungsmittel oder verlassen sich auf Eigenschaften, die iu beim Erweichen des thermoplastischen Materials verlorengehen können.The devices of the prior art have either the disadvantage that the welding times because of the double material thickness of the overlapping Ends are too long, require additional guidance, or rely on properties iu can be lost during the softening of the thermoplastic material.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der angegebenen Art zu schaffen, bei der in einfacher Weise die sich überlappenden Kanten des Fo- is lienstücks zur Erwärmung ihrer inneren Seiten zuverlässig abgehoben werden und dabei besonders kurze Taktzeiten erzielt werden.The invention is based on the object of creating a device of the specified type in which in simply the overlapping edges of the fois lienstücks are reliably lifted off to heat their inner sides and are particularly short Cycle times can be achieved.
Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöstThis object is achieved according to the invention by a device with the characterizing features of Claim 1 solved
Vorteilhafte Weiterbildungen der erfindungsgemäßen Vorrichtung sind in den Unteransprüchen angegeben. Advantageous further developments of the device according to the invention are specified in the subclaims.
Ein Ausführungsbeispiel der Erfindung ist nächstehend anhand der Zeichnung näher erläutert Es zeigtAn embodiment of the invention is as follows explained in more detail with reference to the drawing It shows
F i g. 1 in schematischer Übersicht die aufeinanderfolgenden Schritte zur Herstellung einer zylindrischen Hülse aus einer Folienbahn,F i g. 1 shows a schematic overview of the successive steps for producing a cylindrical Sleeve made from a sheet of film,
Fig.2 eine Draufsicht auf eine Vorrichtung zum .11) Herstellen einer zylindrischen Hülse, teilweise im Schnitt,Fig. 2 is a plan view of a device for .11) Manufacture of a cylindrical sleeve, partially in section,
F i g. 4 das Ablenken der Heißluft und Verschweißen undF i g. 4 the deflection of the hot air and welding and
In F i g. 1 ist ganz links gezeigt, wie die vordere Kante eines Folienstücks 118 von einem Formdorn 131 unter Verwendung einer vertikalen Reihe von Vakuumöffnungen 135 aufgegriffen wird; danach wird der Dorn 131 durch einen Zahnstangenantrieb um 540° gedreht In der zweiten gezeigten Lage, in der der Dorn 131 um 180° gedreht ist, wird ein Schlitten, der später genau beschrieben wird, in radialer Richtung auf den Dorn 131 zu geschoben, so daß eine Rolle 436, welche ihre größte Ausdehnung in senkrechter Richtung hat und die über die Höhe des Folienstücks 118 verläuft, dessen Oberfläche bet uhrt, so daß es auf dem Dorn 131 gehalten wird. In der dritten gezeigten Lage, in der die 540° -Drehung des Domes 131 beendet ist, liegen die 5» vertikal verlaufenden Kanten des Folienstücks 118 übereinander. Aus einer nach vorn zulaufenden Düse 427a wird dann heiße Luft auf die überlappenden Kanten gerichtet, so daß das thermoplastische Material erweicht Die heiße Luft wirkt gleichzeitig auf beide Kanten des Folienstücks ein, so daß die zum Verschweißen notwendige Zeit abgekürzt wird. Die heiße Luft hat vorzugsweise eine Temperatur im Bereich von 288 bis 343°C.In Fig. 1 is shown on the far left, as is the front edge a piece of film 118 from a mandrel 131 using a vertical row of vacuum ports 135 is picked up; then the mandrel 131 is rotated through 540 ° by a rack and pinion drive In the second position shown, in which the mandrel 131 is rotated by 180 °, a slide that will later be exactly is described, pushed in the radial direction on the mandrel 131, so that a roller 436, which is its largest Has extension in the vertical direction and which runs over the height of the film piece 118, the Surface is clocked so that it is held on the mandrel 131. In the third position shown, in which the 540 ° rotation of the dome 131 is complete, the 5 » vertically extending edges of the film piece 118 one above the other. From a nozzle that tapers to the front 427a then hot air is directed at the overlapping edges, so that the thermoplastic material softens The hot air acts simultaneously on both edges of the piece of film, so that the Welding time is shortened. The hot air is preferably at a temperature in Range from 288 to 343 ° C.
Während die heiße Luft gegen die überlappenden «> Kanten gerichtet wird, sucht sich die hintere Kante des Folienstücks 118 von der Oberfläche des Domes 131 abzuheben. So wird zusammen mit der vorderen Kante des Folienstücks eine V-förmige Tasche zur Aufnahme der heißen Luft gebildet An einer der hinteren Kante benachbarten Stelle bleibt die Rolle 436 in Kontakt mit dem Folienstück, so daß die hintere Kante in der geeigneten, dem heißen Luftstrom ausgesetzten Lage gehalten wird.While the hot air against the overlapping «> Edges is straightened, seeks the rear edge of the film piece 118 from the surface of the dome 131 take off. In this way, together with the front edge of the piece of film, a V-shaped pocket becomes a receptacle At a point adjacent to the rear edge, the roller 436 remains in contact with the hot air the piece of film so that the rear edge is in the appropriate position exposed to the hot air stream is held.
Nach Erweichung der Kanten des Folienstücks 118 wird ein kalter Druckstempel 429 durch Nocken an die überlappenden Kanten angedrückt; die erweichten Oberflächen werden zu einer Schweißnaht vereinigt Damit ist die Herstellung der zylindrischen Hülse 117 beendet Zu diesem Zeitpunkt wird der Unterdruck an den Offnungen 135 abgeschaltet, so daß die Hülse 117 von dem Dom 131 abgenommen werden kann. In der vierten gezeigten Lage, in der der Druckstempel 429 durch Nocken an das Folienstück 118 angedrückt wird, wird heiße Luft von dem Folienstück 118 weggeleitet, wodurch ein Verziehen der Seitenwände verhindert wird. Nach Verschweißen der Kanten werden der Druckstempel 429 und die Rolle 436 von der Hülse 117 wegbewegt (fünfte gezeigte Lage), so daß sie diese nicht mehr berühren; der Dom 131 kommt in eine Lage, in der die Hülse ausgestoßen und über die Formdorne 141 geschoben wird.After the edges of the piece of film 118 have softened, a cold plunger 429 is attached to the overlapping edges pressed; the softened surfaces are combined to form a weld seam The manufacture of the cylindrical sleeve 117 is thus ended. At this point in time, the negative pressure is on the openings 135 switched off, so that the sleeve 117 from the cathedral 131 can be removed. In the fourth position shown, in which the pressure stamp 429 is pressed against the piece of film 118 by cams, For example, hot air is directed away from the piece of film 118, thereby preventing the sidewalls from buckling will. After the edges have been welded, the plunger 429 and the roller 436 are removed from the sleeve 117 moved away (fifth layer shown) so that they don't touch more; the dome 131 comes into a position in which the sleeve is ejected and over the mandrels 141 is pushed.
Wie in den F i g. 2,3,4 und 5 gezeigt ist, wird die heiße Luft von einem Luftregler 427c geliefert, welcher Luft in geeigneter Menge, z. B. 170 bis 200 L/min, dem unteren Ende eines Heißluftheizers zuführt, welcher vertikal zu jedem Dorn 131 und in dessen Nähe angebracht ist Der Heißluftheizer weist einen vertikalen, langen Heißluftkanal 427 auf, welchem durch ein Rohr und durch einen Anschluß 437/ Luft vom Luftregler 427c zugeführt wird und welcher an einem Ende 4276 offen ist, so daß die Luft nach oben entweichen kann. Innerhalb des KanalsAs shown in Figs. 2,3,4 and 5 is shown, the hot one Air supplied from an air regulator 427c which supplies air in an appropriate amount, e.g. B. 170 to 200 L / min, the lower one The end of a hot air heater attached vertically to and in the vicinity of each mandrel 131 Hot air heater has a vertical, long hot air duct 427, which through a pipe and through a Port 437 / air is supplied from air regulator 427c and which is open at one end 4276 so that the Air can escape upwards. Inside the channel
427 ist ein nicht gezeigter, geeigneter Heizer angebracht, durch welchen die Luft beim Durchströmen erhitzt wird. Der Luftheizer ist auf einer horizontalen Platte 427e angebracht, welche an der oberen Oberfläche einer Speiche 4226 des Karussells 422 durch Bolzen 427/ befestigt ist Die Platte 427e ist mit einer aufrechten Stütze 427g versehen, an welcher der Heißluftheizer durch Schellen und Bolzen 427Λ befestigt ist Über der öffnung 4276 am Ende des Kanals 427 ist ein beweglicher Deckel 428 vorgesehen, so daß die heiße Luft nach dem Herumwickeln des Folienstücks 118 um den Dorn 131 und nach seinem Verschweißen, wie in F i g. 1 gezeigt von der Seitenwand des Folienstücks links weggeleitet werden kann. Hierdurch wird ein Verziehen verhindert Wie F i g. 5 zeigt wird der Deckel 428 durch ein vertikal angebrachtes Verbindungsgestänge 428a bewegt. Er ist durch eine Feder in die offene Lage vorgespannt. Der Deckel 428, welcher an einem Träger 4286 am oberen Abschnitt des Kanals 427 durch einen Stift 428c befestigt ist stellt einen Teil des Verbindungsgestänges dar. Der DeckelA suitable heater, not shown, is attached 427, through which the air as it flows through is heated. The air heater is mounted on a horizontal plate 427e, which is attached to the upper Surface of a spoke 4226 of the carousel 422 is fastened by bolts 427 / The plate 427e is with a Upright support 427g is provided, to which the hot air heater is attached by clamps and bolts 427Λ A movable cover 428 is provided over the opening 4276 at the end of the channel 427 so that the hot air after wrapping the piece of film 118 around the mandrel 131 and after welding it, as in Fig. 1 shown can be diverted away from the side wall of the piece of film on the left. Through this warping is prevented as shown in FIG. 5 shows the lid 428 being attached by a vertically Link rod 428a moves. It is biased into the open position by a spring. The cover 428, which is attached to a bracket 4286 at the upper portion of the channel 427 by a pin 428c a part of the connecting rod. The cover
428 bildet so einen Hebel; sein der Kammer 427 gegenüberliegendes Ende ist schwenkbar durch eine einen verschiebbaren Zapfen enthaltende Vorrichtung 428e am oberen Abschnitt eines vertikal angebrachten Verbindungsstückes 428c/ angebracht Die den verschiebbaren Zapfen aufweisende Vorrichtung 428e ist durch eine Feder 428/nach oben vorgespannt Auf das obere Ende des Verbindungsstückes 428c/ ist ein einstellbarer Anschlag 428g aufgeschraubt, so daß die vom Deckel freigegebene öffnung eingestellt werden kann. Wird die Geschwindigkeit der Vorrichtung vergrößert, so werden längere Schließzeiten des Deckels erforderlich; die oben beschriebene Einstellvorrichtung erlaubt dann eine flexible Anpassung an verschiedene Arbeitsgeschwindigkeiten.428 thus forms a lever; its end opposite the chamber 427 is pivotable by a a slidable pin containing device 428e on the upper portion of a vertically mounted Connector 428c / attached The device 428e having the sliding pin is biased upward by a spring 428 / On the upper end of the connector 428c / is a adjustable stop 428g screwed so that the the opening released by the lid can be adjusted. Will the speed of the device enlarged, longer closing times of the lid are required; the adjustment device described above then allows flexible adaptation to different working speeds.
Das Verbindungsstück 428c/ist durch eine Feder 428Λ, die mit der Platte 427e verbunden ist, nach unten vorgespannt, so daß der Deckel 428 in seine offeneThe connecting piece 428c / is by a spring 428Λ, which is connected to the plate 427e, biased downward so that the lid 428 in its open
55
schwenS mit einem Betätigungshebel 428/ verbun- anfängt, ein Folienstück 118 um sich herum zu w.nden.swiveling with an actuating lever 428 / begins to w.nd a piece of film 118 around itself.
?ηΤ3ΪΚ428/Ί« durcheilen Zapfen 428/an einem so daß die Rolle 436 die SeUe des auf dem Dorn? ηΤ3ΪΚ428 / Ί «rush through pin 428 / on one so that the roller 436 is the position of the on the mandrel
dT^OboflSe der Platte 427e befestigt ist Das von 180" des Domes berührt Wie F. g 2 und d,e zweitedT ^ OboflSe of plate 427e is attached that touched by 180 "of the dome As F. g 2 and d, e second
andere Ende des Hebels 428/ trägt eine sphärische der in F i g. 1 gezeigten Stellungen deutlich zeige*stehtthe other end of the lever 428 / carries a spherical one of the type shown in FIG. 1 clearly show the positions shown *
bahn 428n aufliegt die auf den Speichen 4226 des außen über, so daß dieser 429 vom f °hen*tü£k «^™track 428n rests on the spokes 4226 of the outside over, so that this 429 from the f ° hen * tü £ k «^ ™
S^Z^l^c^einsoiorugesSc^^ Wgender hoher Abschnut j^**"«*^ 4Mb S ^ Z ^ l ^ c ^ einsoiorugesSc ^^ Turning high cut-off j ^ ** "« * ^ 4Mb
des Deckels 428 herbeiführt, nachdem das Folienstück führt zum Andrücken des Druckstempels 429 an dieof the cover 428 after the piece of film leads to the pressing of the plunger 429 against the
iSumdenDofnlllherumgewickeltwordenistsodaß überlappenden, erweichten Enden«es ^ns^oiSumdenDofnlll has been wrapped around so that the overlapping, softened ends «es ^ ns ^ o
heiße Luft eeeen die Berührfläche zwischen den daß die Schweißung durchgeführt wird und dehot air eeeen the contact surface between the weld being carried out and the
Ss&sfesrr saw" ää^Ss & sfesrr saw " ää ^
ißnaht zwischen den erweichten, 25 stücken aus besonders dünnem Material, da die heißeSeam between the softened, 25 pieces made of particularly thin material, because the hot one
so daß sie 3« Erhitzung der nebeneinanderliegenden Abschnitte desso that they 3 «heating the adjacent sections of the
S^e^Uin^eVl^tungnaiSinnengedrückt Folienstücks führt offensichtlich gleichzeitig zu einer w^rTHieXch wfrd der Druckstempel 429 zurückge- beträchtlichen Verminderung der zur Herstellung derS ^ e ^ Uin ^ eVl ^ tungnaiSeenly pressed foil piece obviously leads to one at the same time w ^ rTHieXch wfrd the pressure stamp 429 back- considerable reduction in the production of the
rogen so daß er an der nach außen weisenden Fläche Schweißnaht erforderhchen Zeit roe so that it takes time to weld the surface facing outwards
eines ringförmigen Anschlagrings 479 anschlägt Der an annular stop ring 479 strikes the
konzentrisch zur Welle 810' angebracht und wird auf attached concentrically to the shaft 810 'and is on
dem Karussell durch Arme 434 gehalten. Jeder Arm 434held to the carousel by arms 434. Each arm 434
weist einen vertikalen, säulenförmigen Abschnitt 434a has a vertical columnar portion 434a
auf welcher von der oberen Fläche des Karussells 422 aus den Anschlagring 479 trägt Auf dem Anschlagring 479 sind in Umfangsrichtung in Abständen radial verlaufende, als Zugang vorgesehene Schlitze 479a vorgesehen, so daß die Kolbenstange 430 und der Zylinder 431 den Anschlagring 479 durchsetzen können. Der Zylinder 431 ist an einem ringförmigen Trägerring 432 befestigt weicher auf dem Karussell 422 durch vertikale Säulen 433 befestigt ist, welche von den Enden horizontal angebrachter freitragender Abschnitte 434Ö der Arme 434 nach oben verlaufen.on which from the top surface of the carousel 422 carries the stop ring 479 On the stop ring 479 are slots 479a which run radially at intervals in the circumferential direction and are provided as access provided so that the piston rod 430 and the cylinder 431 can pass through the stop ring 479. The cylinder 431 is attached to an annular support ring 432 which is softer on the carousel 422 vertical columns 433 is attached, which from the ends of horizontally mounted cantilevered sections 434Ö of arms 434 extend upward.
F j σ 2 z*\<n daß der Druckstempel 429 in einem nach außen weisenden, vertikalen Schlitz eines Schlittens angebracht ist Eine vertikale Rolle 436 ist Seite an Seite bei dem Druckstempel durch eine Welle 436a angebracht Eine Feder 437 umgibt die Welle 436a und spannt diese nach außen vor, so daß eine nachgebende Halterung zum Andrücken des Folienstücks 118 an den Dorn 131 entsteht Der Schlitten 435 wird durch die Bewegung seiner Kolbenstange 430 bewegt Das dem Druckstempel 429 gegenüberliegende Ende der Kolbenstange 430 weist eine Nocke 430a auf, welches einer ω vertikalen Fläche einer seitlichen Nockenbahn 4306 folgt Die Nockenbahn 4306 bewegt sich nicht und ist durch eine Nabe 430c auf einem feststehenden, vertikalen, zur Welle 810' konzentrischen Schaft 810' befestigt .F j σ 2 z * \ <n that the plunger 429 is mounted in an outwardly facing vertical slot of a carriage A vertical roller 436 is attached side by side to the plunger by a shaft 436a. A spring 437 surrounds the shaft 436a and biases this outwards, so that a yielding holder for pressing the piece of film 118 against the mandrel 131 is created. The slide 435 is moved by the movement of its piston rod 430 Surface follows a lateral cam track 4306 The cam track 4306 does not move and is mounted by a hub 430c on a fixed, vertical shaft 810 'concentric with the shaft 810'.
Die Nockenbahn 430f> erstreckt sich in Umfangsncntung des Karussells über einen Bogen, welcher den während des Schweißzyklus zurückgelegten WegThe cam track 430f> extends circumferentially of the carousel over an arc that shows the path covered during the welding cycle
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2462343A DE2462343C3 (en) | 1974-04-25 | 1974-04-25 | Device for producing a cylindrical sleeve from a thermoplastic film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2462343A DE2462343C3 (en) | 1974-04-25 | 1974-04-25 | Device for producing a cylindrical sleeve from a thermoplastic film |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2462343A1 DE2462343A1 (en) | 1977-03-10 |
DE2462343B2 DE2462343B2 (en) | 1980-10-30 |
DE2462343C3 true DE2462343C3 (en) | 1985-12-05 |
Family
ID=5934966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2462343A Expired DE2462343C3 (en) | 1974-04-25 | 1974-04-25 | Device for producing a cylindrical sleeve from a thermoplastic film |
Country Status (1)
Country | Link |
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DE (1) | DE2462343C3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4310369A (en) * | 1979-12-12 | 1982-01-12 | Dixico Incorporated | Apparatus and method for fabricating a flexible cylinder from multi-ply flexible web material having metal and plastic plies |
DE29507067U1 (en) * | 1995-04-27 | 1995-09-28 | Paul Kiefel GmbH, 83395 Freilassing | Device for glue-free folding of trim parts |
DE19804221A1 (en) * | 1998-02-04 | 1999-08-05 | Natec Reich Summer Gmbh Co Kg | Method and device for producing a continuous film tube from a flat film web |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3610114A (en) * | 1969-07-24 | 1971-10-05 | Stanley J Kaminsky | Mechanism for heating container sealing surfaces |
GB1309941A (en) * | 1970-01-07 | 1973-03-14 | Mardon Son Hall Ltd | Method and apparatus for sealing cartons |
US3673033A (en) * | 1970-02-02 | 1972-06-27 | Sweethart Plastics Inc | Method for making disposable plastic bucket |
-
1974
- 1974-04-25 DE DE2462343A patent/DE2462343C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2462343B2 (en) | 1980-10-30 |
DE2462343A1 (en) | 1977-03-10 |
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