DE2836590C2 - Welding and cutting device for welding and cutting a plastic film - Google Patents

Welding and cutting device for welding and cutting a plastic film

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Publication number
DE2836590C2
DE2836590C2 DE2836590A DE2836590A DE2836590C2 DE 2836590 C2 DE2836590 C2 DE 2836590C2 DE 2836590 A DE2836590 A DE 2836590A DE 2836590 A DE2836590 A DE 2836590A DE 2836590 C2 DE2836590 C2 DE 2836590C2
Authority
DE
Germany
Prior art keywords
welding
plastic film
stack
cutting
cutting device
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
Application number
DE2836590A
Other languages
German (de)
Other versions
DE2836590B1 (en
Inventor
Friedrich Ing.(Grad.) 4530 Ibbenbueren Wieligmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
C Keller GmbH and Co KG
Original Assignee
C Keller GmbH and Co KG
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 C Keller GmbH and Co KG filed Critical C Keller GmbH and Co KG
Priority to DE2836590A priority Critical patent/DE2836590C2/en
Priority to IT23574/79A priority patent/IT1121396B/en
Priority to GB7924667A priority patent/GB2028223B/en
Priority to FR7920290A priority patent/FR2434021A1/en
Publication of DE2836590B1 publication Critical patent/DE2836590B1/en
Application granted granted Critical
Publication of DE2836590C2 publication Critical patent/DE2836590C2/en
Expired legal-status Critical Current

Links

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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B29C65/7451—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • 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
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8227—Transmission mechanisms using springs
    • 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
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/005—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for removing material by cutting
    • 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

Description

Die Erfindung betrifft eine Schweiß- und Schneidvorrichtung zum Schweißen und Schneiden einer schmalen Kunststoff-Folie an einer Vorrichtung zum Einwickeln eines auf einer Palette befindlichen Stapels, der mil der schmalen Kunststoff-Folie in einer Schraubenlinie umwickelt wird, wobei die Vorrichtung zum Einwickeln auf einem die Palette und den Stapel aufnehmenden Drehtisch und einem neben dem Drehtisch angeordneten Gestell besteht, in welchem die Kunststoff-Folie in einer Halterung gelagert ist, die an einem im Gestell auf- und abbewegbaren Schlitten befestigt ist.The invention relates to a welding and cutting device for welding and cutting a narrow plastic film on a device for wrapping of a stack on a pallet, which with the narrow plastic film in a helical line is wrapped, the device for wrapping on a receiving the pallet and the stack Turntable and a frame arranged next to the turntable, in which the plastic film is in a bracket is mounted which is attached to a slide that can be moved up and down in the frame.

Aus der DE-OS 27 24 100 ist eine Vorrichtung zum Einwickeln eines auf einer Palette befindlichen Stapels bekannt, bei der der Stapel mittels einer aus PVC bestehenden Kunststoff-Folie umwickelt wird. Durch die Klebtähigkeit der PVC-Folie haften die um den Stapel gewickelten Folienlagen aneinander. Das hintere Ende der Folie wird deshalb mittels einer Bürste an die um den Stapel gewickelte Folie gepreßt und haftet daran fest.From DE-OS 27 24 100 a device for Wrapping a stack located on a pallet is known in which the stack is made of PVC existing plastic film is wrapped. Due to the adhesiveness of the PVC film, they adhere to the Stack of wrapped film layers together. The rear end of the film is therefore attached to the with a brush Foil wrapped around the stack is pressed and adhered to it.

Diese Haftung ist jedoch nicht von Dauer, da sich die Enden der Folie beim Transport des Stapels von der umgewickelten Folie ablösen, so daß die Gefahr der Loslösung der um den Stapel gewiekelten Folie besteht.However, this liability is not permanent as the Detach the ends of the film from the wrapped film during transport of the stack, so that the risk of There is detachment of the film wrapped around the stack.

Die DE-OS 24 13 807 zeigt eine Vorrichtung zum Einwickeln eines auf einer Palette befindlichen Stapels, bei der der Stapel mittels einer dehnbaren Kunststoff-Folie aus Polyäthylen in mehreren Lagen umwickelt wird. Das hintere Ende der Folie wird durch eine von Hand zu bedienende Schweißvorrichtung mit der um den Stapel gewickelten Folie verschweißt und anschlieDE-OS 24 13 807 shows a device for wrapping a stack on a pallet, in which the stack is wrapped in several layers by means of a stretchable plastic film made of polyethylene will. The rear end of the film is welded to the around by a manually operated welding device the stack of wrapped film is welded and then

ßend mit einem Messer abgeschnitten.cut off with a knife.

Nachteilig ist hierbei, daß zum Verschweißen der Enden und zum Schneiden der Folie eine Bedienungsperson vorhanden sein muß, die zudem durch Hochheben und Andrücken der Schweißvorrichtung an. den mit Folie bedeckten Stapel schwere körperliche Arbeit verrichten muß. Abgesehen von den hohen Lohnkosten, die sich hierdurch ergeben und die Wirtschaftlichkeit des Umwicklungsvorganges lu_rabsetzen, besteht außerdem der Nachteil, daß die Leistung von der Zuverlässigkeit und der Schnell'gkeit der eingesetzten Bedienungsperson abhängt. Denn bei der zu verschweißenden Folie kommt es hauptsachlich auf einen bestimmten Anpreßdruck an, mit dem die Schweißvorrichtung während des Schweißvorganges an die Folie gehalten wird, und der von der Bedienungsperson oft nicht eingehalten wird, so daß sich entweder Schweißlöcher in der Folie bilden, durch die Feuchtigkeit eindringen kann oder aber die Folie ist nicht genügend verschweißt, so daß sich diese wieder löst.The disadvantage here is that one operator is required to weld the ends and cut the film must be present, which also by lifting and pressing the welding device on. the stack covered with foil has to do heavy physical work. Except for the high ones Labor costs that result from this and reduce the profitability of the wrapping process, there is also the disadvantage that the performance depends on the reliability and speed of the used operator depends. Because it mainly occurs with the film to be welded a certain contact pressure with which the welding device is applied during the welding process the film is held, and which is often not observed by the operator, so that either Form welding holes in the foil through which moisture can penetrate or the foil is not welded sufficiently so that it loosens again.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Einwickeln eines auf einer Palette befindlichen Stapels derart mit einer Schweiß- und Schneidvorrichtung zu versehen, daß das Verschweißen der Enden der Folie mit der den Stapel umwickelten Folie ohne Bedienungsperson und damit ohne Handarbeit vonstatten geht und daß der den Schweißvorgang bestimmende Anpreßdruck so gehalten ist, daß eine den Anforderungen auf Dichtheit und Haltbarkeit genügende Schweißung vollzogen werden kann.The invention is based on the object of a device for wrapping one on a pallet located stack to be provided with a welding and cutting device that the welding the ends of the film with the film wrapped around the stack without an operator and thus without manual labor takes place and that the contact pressure determining the welding process is held so that a Sufficient welding requirements for tightness and durability can be carried out.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Schweißvorrichtung aus einem Schweißbalken und einem an dem Schweißbalken befestigten Winkelhebel besteht,der mittels einer Kolben-Zylinder-Einheit schwenkbar am Schlitten angeordnet ist und daß die Schneidvorrichtung aus einem gezackten Messer besteht, welches zwischen Stapel und Schlitten an einem schwenkbar am Winkelhebcl gelagerten Hebel bcfestigi ist.According to the invention, this object is achieved in that the welding device consists of a welding bar and an angle lever which is fastened to the welding bar and which is actuated by means of a piston-cylinder unit is pivotably arranged on the carriage and that the cutting device consists of a serrated knife consists, which bcfestigi between the stack and the carriage on a pivotable lever mounted on the Winkelhebcl is.

Die Ausbildung und Anordnung der Schweiß- und Schneidvorrichtung bewirkt, daß der Schweiß- und Schneidvorgang nunmehr automatisch ohne Einsät/, einer Bedienungsperson vor sich geht. Dies wirkt sich entsprechend vorteilhaft auf die Betriebskosten aus. Außerdem ist auch rine höhere Durchsatzleistung zu verzeichnen, da der Arbcitsablauf nunmehr zügig und rasch vor sich geht. Der für das Verschweißen der Folie richtige Anpreßdruck ist über den Winkelhebel und die Kolben-Zylinder-Einheit einstellbar.The design and arrangement of the welding and cutting device causes the welding and The cutting process now takes place automatically without sowing / an operator. This affects correspondingly beneficial to the operating costs. In addition, there is also a higher throughput rate Record, because the work flow is now brisk and quick. The one for welding the foil The correct contact pressure can be set using the angle lever and the piston-cylinder unit.

Zweckmäßigerweise ist zwischen Schweißbalkcn und Messer eine Druckrolle angeordnet, die die Kunststoff-Folie vor dem Schweiß- und Schneidvorgang mittels Federkraft an den Stapel drückt.A pressure roller, which holds the plastic film, is expediently arranged between the welding bar and the knife before the welding and cutting process presses against the stack by means of spring force.

Durch die Betätigung der Druckrolle vor dem Schweiß- und Schneidvorgang kann der Schneidvorgang anstatt nach bereits vor bzw. zu gleicher Zeit mit dem Schweißvorgang stattfinden, wodurch der Schweiß- und Schneidvorgang in wesentlich kürzerer Zeit vonstatten gehen kann.By activating the pressure roller before the welding and cutting process, the cutting process instead of taking place before or at the same time as the welding process, whereby the Welding and cutting process can take place in a much shorter time.

Von Vorteil ist weiterhin, daß auch die Schneidvorrichtung durch eine Kölben-Zylindef-Hinhcil schwenkbar ist.Another advantage is that the cutting device can also be pivoted by means of a piston-cylinder attachment is.

In der Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung schematisch veranschaulicht. Es zeigtIn the drawing is an embodiment of the Subject of the invention illustrated schematically. It shows

Fig. 1 eine Ansicht der Vorrichtung, die an einem auf- und abbewegbaren Schlitten befestigt ist,Fig. 1 is a view of the device, which is attached to a and movable carriage is attached,

Fig. 2 eine Draufsicht auf die Vorrichtung gemäßFig. 2 is a plan view of the device according to

Fig. 1.Fig. 1.

Die Schweiß- und Schneidvorrichtung I ist an einem in einem Gestell (nicht dargestellt) auf- und abbewegbaren Schlitten 2 befestigt, in welchem die Kunststoff-Folie 3 rollenförmig in einer Halterung (nicht dargestellt) gelagert ist. Die Kunststoff-Folie 3 wird von der Halterung abgezogen und über eine Rolle 4 und Haltebacken 5 einem Stapel 6 zugeführt, dort durch einen Klemmgreifer (nicht dargestellt) an den Stapel 6 gelegt und durch Drehung des Stapels 6 in Richtung des Pfeiles 7 in einer Schraubenlinie um den Stapel 6 gewickelt, wobei der Schlitten 2 sich in vertikaler Richtung auf- bzw. abbewegt. Nachdem der Wickelvorgang beendet ist, wird die Kunststoff-Folie 3 durchgeschnitten und das Ende der Kunststoff-Folie 3 mit der um den Stapel 6 gewickelten Kunststoff-Folie 3 verschweißt.The welding and cutting device I can be moved up and down on a frame (not shown) Fastened carriage 2, in which the plastic film 3 is in the form of a roll in a holder (not shown) is stored. The plastic film 3 is pulled off the holder and over a roller 4 and Holding jaws 5 fed to a stack 6, there by a clamping gripper (not shown) on the stack 6 and by rotating the stack 6 in the direction of the arrow 7 in a helical line around the stack 6 wound, the carriage 2 moving up and down in the vertical direction. After the wrapping process is finished, the plastic film 3 is cut and the end of the plastic film 3 with the Plastic film 3 wound around the stack 6 is welded.

Die Schweißvorrichtung besteht aus einem Schweißbalken 8 und einem schwenkbar am Schlitten 2 gelagerten Winkelhebel 9, der am Schweißbalken 8 befestigt ist. Eine am Schlitten 2 befesiigte Kolben-Zylinder-Einheit 10 greift am Winkelhebel 9 an und verschwenkt diesen und damit den Schweißbalken 8 in Richtung der Pfeile 11 in die Betriebs- (Fig. 2) bzw. Außerbetriebsstellung.The welding device consists of a welding bar 8 and an angle lever 9 which is pivotably mounted on the carriage 2 and which is attached to the welding bar 8 is attached. A piston-cylinder unit attached to slide 2 10 engages the angle lever 9 and pivots it and thus the welding bar 8 in Direction of arrows 11 in the operating (Fig. 2) or Out of order.

Die Schneidvorrichtung besteht aus einem gezackten Messer (12), welches an einem Hebel 13 befestigt is'. Der Hebel i2 ist schwenkbar am Winkelhebel 9 gelagert und wird durch eine am Winkelhebel 9 befestigte Kolben-Zylinder-Einheit 14 derart verschwenkt, daß das Messer 12 die vor dem Messer 12 verlaufende Kunststoff-Folie 3 durchschneiden kann.The cutting device consists of a serrated knife (12) which is attached to a lever 13 '. The lever i2 is pivotably mounted on the angle lever 9 and is fastened to the angle lever 9 by a device The piston-cylinder unit 14 is pivoted in such a way that the knife 12 extends in front of the knife 12 Can cut through plastic film 3.

Zwischen dem Schweißbalken 8 und dem Messer 12 ist eine Druckrolle 15 angeordnet, die die Kunststoff-Folie 3 vor dem Schweiß- und Schneidvorgang mittels einer Feder 16 an den Stapel 6 drückt. Die Druckrolle 15 steht über Hebel 17 mit dem Schweißbalker. 8 in Verbindung, wobei die Hebel 17 an dem Schweißbalken 8 schwenkbar gelagert sind.Between the sealing bar 8 and the knife 12, a pressure roller 15 is arranged, which the plastic film 3 presses against the stack 6 by means of a spring 16 before the welding and cutting process. The pressure roller 15 stands over lever 17 with the welding bar. 8 in connection, the levers 17 on the sealing bar 8 are pivotably mounted.

Sobald die Druckrolle 15 die Kunststoff-Folie 3 an den Stapel 6 drückt, treten auch die Haltebacken 5 in Tätigkeit und klemmen die Kunststoff-Folie 3 fest, so daß zwischen Druckrolle 15 und Haltebacken 5 die Kunststoff-Folie 3 straff gespannt ist und das Messer 12As soon as the pressure roller 15 presses the plastic film 3 against the stack 6, the holding jaws 5 also enter Activity and clamp the plastic film 3 so that between the pressure roller 15 and the retaining jaws 5 The plastic film 3 is stretched taut and the knife 12

.'u zum Schneidvorgang in Aktion treten kann..'u can go into action for the cutting process.

Mit der Kolben-Zylinder-Einheit \<j ist es möglich, genau den Anpreßdruck einzustellen, den der Schweißbalken 8 beim Schweißvorgang besitzen muß. Es werden dadurch Schweißnähte erzeugt, die lochlos nnd.With the piston-cylinder unit \ <j it is possible to set exactly the contact pressure that the welding bar 8 must have during the welding process. This creates weld seams that are hole-free.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (3)

Patentansprüche:Patent claims: 1. Schweiß- und Schneidvorrichtung zum Schweißen und Schneiden einer schmalen Kunststoff-Folie an einer Vorrichtung zum Einwickeln eines auf einer Palette befindlichen Stapels, der mit der schmalen Kunststoff-Folie in einer Schraubenlinie umwickelt wird, wobei die Vorrichtung zum Einwickeln aus einem die Palette und den Stapel aufnehmenden Drehtisch und einem neben dem Drehtisch angeordneten Gestell besteht, in welchem die Kunststoff-Folie in einer Halterung gelagert ist, die an einem im Gestell auf- und abbewegbaren Schlitten befestigt ist, dadurch gekennzeichnet, daß die Schweißvorrichtung aus einem Schweißbalken (8) und einem an dem Schweißbalken (8) befestigten Winkelhebel (9) besteht, der mittels einer Kolben-Zylinder-Einheit (10) schwenkbar am Schlitten (2) angeordnet ist, und daß die Schneidvorrichtung aus einem gezackten Messer (12) besteht, welches zwischen Stisnsl (6) und Schlitten (2) an einem schwenkbar am Winkelhebel (9) gelagerten Hebel (13) befestigt ist.1. Welding and cutting device for welding and cutting a narrow plastic film on a device for wrapping a stack located on a pallet, the one with the narrow Plastic film is wrapped in a helical line, with the device being made for wrapping a turntable receiving the pallet and the stack and one arranged next to the turntable There is a frame in which the plastic film is stored in a holder that is attached to an im Frame up and down movable carriage is attached, characterized in that the Welding device consisting of a welding bar (8) and one attached to the welding bar (8) Angle lever (9) is made by means of a piston-cylinder unit (10) is arranged pivotably on the carriage (2), and that the cutting device is off a serrated knife (12), which between Stisnsl (6) and carriage (2) on a is pivotally attached to the angle lever (9) mounted lever (13). 2. Schweiß- und Schneidvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Schweißbalken (8) und Messer (12) eine Druckrolle (15) angeordnet ist, die die Kunststoff-Folie vor dem Schweiß- und Schneidvorgang mittels Federkraft an den Stapel (6) drückt.2. Welding and cutting device according to claim 1, characterized in that between Sealing bar (8) and knife (12) a pressure roller (15) is arranged, which the plastic film before The welding and cutting process presses against the stack (6) by means of spring force. 3. Schweiß- und Schneidvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß auch die Schneidvorrichtung (12, 13) durch eine Kolben-Zylinder-Einheit (14) schwenkbar is;3. Welding and cutting device according to claim 1, characterized in that also the Cutting device (12, 13) is pivotable by a piston-cylinder unit (14);
DE2836590A 1978-08-21 1978-08-21 Welding and cutting device for welding and cutting a plastic film Expired DE2836590C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2836590A DE2836590C2 (en) 1978-08-21 1978-08-21 Welding and cutting device for welding and cutting a plastic film
IT23574/79A IT1121396B (en) 1978-08-21 1979-06-14 WELDING AND CUTTING DEVICE FOR WELDING AND CUTTING A SHEET IN SYNTHETIC MATERIAL
GB7924667A GB2028223B (en) 1978-08-21 1979-07-16 Device for welding and cutting a strip of plastics film
FR7920290A FR2434021A1 (en) 1978-08-21 1979-08-08 WELDING AND CUTTING DEVICE FOR WELDING AND CUTTING A PLASTIC SHEET

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2836590A DE2836590C2 (en) 1978-08-21 1978-08-21 Welding and cutting device for welding and cutting a plastic film

Publications (2)

Publication Number Publication Date
DE2836590B1 DE2836590B1 (en) 1979-10-31
DE2836590C2 true DE2836590C2 (en) 1980-07-10

Family

ID=6047594

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2836590A Expired DE2836590C2 (en) 1978-08-21 1978-08-21 Welding and cutting device for welding and cutting a plastic film

Country Status (4)

Country Link
DE (1) DE2836590C2 (en)
FR (1) FR2434021A1 (en)
GB (1) GB2028223B (en)
IT (1) IT1121396B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE432916B (en) * 1980-01-08 1984-04-30 Karl Johan Back PROCEDURE AND DEVICE FOR DRAFT FILM PACKAGING
DK669288A (en) * 1987-12-01 1989-06-02 Automated Packaging Syst Inc APPARATUS AND PROCEDURE FOR FILLING BAGS
GB8824358D0 (en) * 1988-10-18 1988-11-23 D J Developments Eng Improvements in garment protection
DE4236760C2 (en) * 1992-10-30 1996-08-22 Erapa Ceka Maschbau Device for the automatic cutting of adhesive tape wound on winding material
EP1415913A1 (en) * 2002-10-30 2004-05-06 Dnc, S.A. Machine and method for wrapping a plastic film around pallets
CN106142545B (en) * 2016-07-29 2018-09-28 天津市旭辉恒远塑料包装股份有限公司 A kind of electric cutting device
CN117342081B (en) * 2023-12-04 2024-02-02 新启航包装科技(泰州)有限公司 Plastic package sealing device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2184212A5 (en) * 1972-05-12 1973-12-21 Iwatani & Co
US3867806A (en) * 1973-04-04 1975-02-25 Lantech Inc Process of making a stretched-wrapped package
DE2450373A1 (en) * 1974-10-23 1976-04-29 Bauer Eberhard MACHINE FOR COVERING ITEMS WITH PLASTIC FILM
CA1064380A (en) * 1976-05-28 1979-10-16 William G. Lancaster Automatic wrapping apparatus

Also Published As

Publication number Publication date
DE2836590B1 (en) 1979-10-31
GB2028223A (en) 1980-03-05
FR2434021A1 (en) 1980-03-21
IT7923574A0 (en) 1979-06-14
GB2028223B (en) 1982-06-30
IT1121396B (en) 1986-04-02

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