DE202010018466U1 - Device for separating in particular for separating welding plastic sheets - Google Patents

Device for separating in particular for separating welding plastic sheets Download PDF

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Publication number
DE202010018466U1
DE202010018466U1 DE202010018466.5U DE202010018466U DE202010018466U1 DE 202010018466 U1 DE202010018466 U1 DE 202010018466U1 DE 202010018466 U DE202010018466 U DE 202010018466U DE 202010018466 U1 DE202010018466 U1 DE 202010018466U1
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Prior art keywords
wheel
cutting wheel
mating gear
separating
cutting
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DE202010018466.5U
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German (de)
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/22—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
    • 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
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • 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
    • B29C65/743—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7435—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a roller
    • 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
    • B29C65/743—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7443—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc by means of 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
    • 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
    • B29C66/70—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8169—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps the mounting of said pressing elements being laterally movable, e.g. adjustable
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/22—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller
    • B26D1/225—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller for thin material, e.g. for sheets, strips or the like

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Vorrichtung zum Trennen insbesondere zum Trennschweißen von thermoplastischen Kunststoffbahnen, die zwischen einem Schneidrad und einem achsparallelen zylindrischen Gegenrad insbesondere einem Ultraschall-Sonotrodenrad hindurch laufen, wobei das Schneidrad mit seiner kreisförmigen Schneide auf den Zylindermantel des Gegenrades drückt, dadurch gekennzeichnet, dass das Schneidrad und das Gegenrad relativ zueinander axial beweglich angeordnet insbesondere axial verstellbar sind.Device for separating in particular for separating welding of thermoplastic resin webs, which run between a cutting wheel and an axially parallel cylindrical mating wheel, in particular an ultrasonic Sonotrodenrad, the cutting wheel presses with its circular edge on the cylinder surface of the mating gear, characterized in that the cutting wheel and the mating gear are arranged axially movable relative to each other in particular axially adjustable.

Description

Die Erfindung betrifft eine Vorrichtung zum Trennen insbesondere zum Trennschweißen von thermoplastischen Kunststoffbahnen, die zwischen einem Schneidrad und einem achsparallelen zylindrischen Gegenrad insbesondere einem Ultraschall-Sonotrodenrad hindurch laufen, wobei das Schneidrad mit seiner kreisförmigen Schneide auf den Zylindermantel des Gegenrades drückt.The invention relates to a device for separating in particular for separating welding of thermoplastic resin webs, which run between a cutting wheel and an axially parallel cylindrical mating gear, in particular an ultrasonic sonotrode wheel, the cutting wheel presses with its circular cutting edge on the cylinder surface of the mating gear.

Es ist bekannt, thermoplastische Kunststoffbahnen zwischen einem Transportrad und einem Gegenrad zu transportieren und gleichachsig zum Transportrad ein Schneidrad zu lagern, das auf der zylindrischen Mantelfläche des Gegenrades die Kunststoffbahnen schneidet und insbesondere hierbei verschweißt. Zum Verschweißen ist das Gegenrad ein Ultraschall-Sonotrodenrad. Darüber hinaus ist es bekannt, dass das Transportrad gleichzeitig als Ambossrad ausgebildet ist, um Ultraschall-Schweißnähte mit unterschiedlichen Prägungen zu erzeugen.It is known to transport thermoplastic resin webs between a transport wheel and a mating gear and coaxially store a cutting wheel to the transport wheel, which cuts the plastic webs on the cylindrical surface of the mating gear and in particular welded in this case. For welding, the mating gear is an ultrasonic sonotrode wheel. Moreover, it is known that the transport wheel is simultaneously formed as an anvil wheel to produce ultrasonic welds with different imprints.

Die kreisförmige Schneide des Schneidrades ist äußerst scharf und besteht aus gehärtetem Stahl, damit über eine lange Zeit die Schärfe erhalten bleibt. Es hat sich aber gezeigt, dass an der Stelle, an der die Schneide des Schneidrades auf die zylindrische Mantelfläche des Gegenrades insbesondere des Ultraschall-Sonotrodenrades drückt, das Mantelflächenmaterial schon nach kurzer Zeit nachgibt, so dass das Gegenrad/Sonotrodenrad oft gewechselt werden muss.The circular cutting edge of the cutting wheel is extremely sharp and made of hardened steel, so over a long time the sharpness remains. However, it has been found that, at the point where the cutting edge of the cutting wheel presses against the cylindrical outer surface of the mating gear, in particular of the ultrasound sonotrode wheel, the lateral surface material yields after a short time, so that the mating / sonotrode wheel has to be changed frequently.

Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs genannten Art so zu verbessern, dass Gegenrad bzw. das Ultraschall-Sonotrodenrad eine hohe Lebensdauer und Standzeit erhält.The object of the invention is to improve a device of the type mentioned so that mating gear or the ultrasonic sonotrode wheel gets a long life and durability.

Diese Erfindung wird erfindungsgemäß dadurch gelöst, dass das Schneidrad und das Gegenrad relativ zueinander axial beweglich angeordnet insbesondere axial verstellbar sind.This invention is inventively achieved in that the cutting wheel and the mating gear are arranged axially movable relative to each other in particular axially adjustable.

Hierdurch ist erreichbar, dass die kreisförmige Schneide des Schneidrades sich über die zylindrische Mantelfläche des Gegenrades bzw. des Ultraschall-Sonotrodenrades axial bzw. parallel zu den Drehachsen beider Räder vorzugsweise äußerst langsam bewegt, so dass die Schneide des Schneidrades nicht ständig auf demselben Kreis des Gegenrades bzw. des Ultraschall-Sonotrodenrades läuft, sondern die Position wechselt und damit die gesamte Mantelfläche des Gegenrades bzw. des Ultraschall-Sonotrodenrades nutzt. Dies schont das Material des Gegenrades bzw. des Ultraschall-Sonotrodenrades.This makes it possible to achieve that the circular cutting edge of the cutting wheel preferably moves extremely slowly over the cylindrical outer surface of the mating gear or ultrasonic sonotrode wheel axially or parallel to the axes of rotation of both wheels, so that the cutting edge of the cutting wheel is not constantly on the same circle of the mating gear or the ultrasonic horn Sonotrodenrades, but the position changes and thus uses the entire surface of the mating gear or the ultrasonic sonotrode wheel. This protects the material of the counter-wheel or the ultrasonic sonotrode wheel.

Vorzugsweise wird hierbei vorgeschlagen, dass das Gegenrad gegenüber dem Schneidrad und/oder das Schneidrad gegenüber dem Gegenrad axial bewegt wird. Auch ist von Vorteil, wenn während der Drehung von Schneidrad und Gegenrad und des Durchlaufens der Kunststoffbahn(en) eine relative Bewegung von Schneidrad und Gegenrad zueinander in axialer Richtung stetig oder in Schüben derart erfolgt, dass die kreisförmige Schneide stets auf dem Zylindermantel des Gegenrades verbleibt. Alternativ wird vorgeschlagen, dass während des Stillstandes oder bei abgehobener Schneide das Schneidrad und das Gegenrad relativ zueinander axial beweglich angeordnet insbesondere axial verstellbar sind.In this case, it is preferably proposed that the mating gear be moved axially relative to the cutting wheel and / or the cutting wheel relative to the mating gear. It is also advantageous if, during the rotation of the cutting wheel and the counter-wheel and the passage of the plastic web (s), a relative movement of the cutting wheel and counter-wheel takes place continuously in the axial direction or in thrusts such that the circular cutting edge always remains on the cylinder jacket of the counter-wheel , Alternatively, it is proposed that the cutting wheel and the mating gear are arranged axially movable relative to one another during standstill or when the cutting edge is removed, in particular axially.

Ein weiteres Merkmal besteht darin, dass die axiale Bewegung maximal der Breite des Zylindermantels des Gegenrades entspricht. Auch kann die Bewegung abwechselnd in beiden axialen Richtungen erfolgen. Ferner wird vorgeschlagen, dass die axiale Bewegung 0,05 bis 0,3 mm vorzugsweise ca. 0,1 mm pro Umdrehung des Gegenrades beträgt.Another feature is that the axial movement corresponds at most to the width of the cylinder jacket of the counter-wheel. Also, the movement can take place alternately in both axial directions. It is further proposed that the axial movement is 0.05 to 0.3 mm, preferably about 0.1 mm per revolution of the counter-wheel.

Ausführungsbeispiele der Erfindung werden im Folgenden näher beschrieben.Embodiments of the invention will be described in more detail below.

Eine thermoplastische Kunststoffbahn (insbesondere in zwei aufeinander liegenden Lagen) wird zwischen einem unteren zylindrischen Gegenrad und einem darüber angeordneten zylindrischen Transport- und/oder Ambossrad geführt und transportiert. Das Gegenrad ist vorzugsweise ein Ultraschall-Sonotrodenrad und bei Anordnung eines Ambossrades wird eine Ultraschall-Schweißnaht in die Kunststoffbahn eingeprägt. Form und Struktur der Schweißnaht hängt hierbei von der Form und den Konturen der zylindrischen Oberfläche des Ambossrades ab.A thermoplastic plastic web (in particular in two superimposed layers) is guided and transported between a lower cylindrical mating gear and an overlying cylindrical transport and / or anvil wheel. The counter-wheel is preferably an ultrasonic sonotrode wheel and, when an anvil wheel is arranged, an ultrasonic weld is impressed into the plastic web. The shape and structure of the weld depends on the shape and contours of the cylindrical surface of the anvil wheel.

Neben dem Transport- und/oder Ambossrad ist ein Schneidrad angeordnet, dessen kreisförmige Schneide auf der zylindrischen Mantelfläche des Gegenrades bzw. des Ultraschall-Sonotrodenrades aufliegt. Während des Schneidens der Bahn/Bahnen bewegt sich das Schneidrad gegenüber dem Gegenrad bzw. dem Sonotrodenrad und/oder das Gegenrad bzw. das Sonotrodenrad gegenüber dem Schneidrad äußerst langsam in axialer Richtung, so dass die Schneide nach und nach über die gesamte Mantelfläche läuft und damit die gesamte Mantelfläche nutzt.In addition to the transport and / or anvil wheel, a cutting wheel is arranged, the circular blade rests on the cylindrical surface of the mating gear or the ultrasonic sonotrode wheel. During the cutting of the webs / webs, the cutting wheel moves extremely slowly in the axial direction relative to the mating wheel or the sonotrode wheel and / or the mating gear or the sonotrode wheel relative to the cutting wheel, so that the cutting edge gradually moves over the entire mantle surface and thus uses the entire lateral surface.

Ein weiteres Ausführungsbeispiel unterscheidet sich von dem ersten dadurch, dass es sich um eine reine Schneidvorrichtung handelt, so dass das Transport- und/oder Ambossrad fehlt. Aber auch hier bewegt sich das Schneidrad axial zumindest über einen Teil der Mantelfläche des Gegenrades.A further embodiment differs from the first in that it is a pure cutting device, so that the transport and / or anvil wheel is missing. But here too, the cutting wheel moves axially at least over part of the lateral surface of the mating gear.

Bei beiden Ausführungen beträgt die axiale Bewegung 0,05 bis 0,3 mm vorzugsweise 0,1 mm pro Umdrehung des Gegenrades. Ferner kann bei beiden Ausführungen dafür gesorgt werden, dass nach Erreichen des Endpunktes des maximal zulässigen oder eingestellten Weges axialer Bewegung die Bewegung umgekehrt wird und das Schneidrad in entgegengesetzter Richtung über die Mantelfläche des Gegenrades bzw. des Ultraschall-Sonotrodenrades läuft.In both embodiments, the axial movement is 0.05 to 0.3 mm, preferably 0.1 mm per revolution of the counter-wheel. Furthermore, it can be ensured in both embodiments that after reaching the end point of the maximum permissible or set path of axial movement, the movement is reversed and the cutting wheel in the opposite direction over the lateral surface of the mating gear or the ultrasonic sonotrode wheel.

Ferner können beide Ausführungen so gehandhabt werden, dass die axiale Bewegung insbesondere Verstellung des Schneidrades gegenüber dem Gegenrad bzw. dem Sonotrodenrad oder die Bewegung insbesondere Verstellung des Gegenrades bzw. Sonotrodenrades gegenüber dem Schneidrad nicht während des Schneidens, sondern dann erfolgt, wenn die Schneide abgehoben ist und insbesondere während des Stillstandes der Vorrichtung/Maschine.Furthermore, both embodiments can be handled so that the axial movement in particular adjustment of the cutting wheel relative to the mating gear or sonotrode wheel or the movement in particular adjustment of the mating wheel or Sonotrodenrades against the cutting wheel not during cutting, but then takes place when the cutting edge is lifted and in particular during the stoppage of the device / machine.

Claims (7)

Vorrichtung zum Trennen insbesondere zum Trennschweißen von thermoplastischen Kunststoffbahnen, die zwischen einem Schneidrad und einem achsparallelen zylindrischen Gegenrad insbesondere einem Ultraschall-Sonotrodenrad hindurch laufen, wobei das Schneidrad mit seiner kreisförmigen Schneide auf den Zylindermantel des Gegenrades drückt, dadurch gekennzeichnet, dass das Schneidrad und das Gegenrad relativ zueinander axial beweglich angeordnet insbesondere axial verstellbar sind.Device for separating in particular for separating welding of thermoplastic resin webs, which run between a cutting wheel and an axially parallel cylindrical mating wheel, in particular an ultrasonic Sonotrodenrad, the cutting wheel presses with its circular edge on the cylinder surface of the mating gear, characterized in that the cutting wheel and the mating gear are arranged axially movable relative to each other in particular axially adjustable. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Gegenrad gegenüber dem Schneidrad und/oder das Schneidrad gegenüber dem Gegenrad axial bewegt wird.Apparatus according to claim 1, characterized in that the mating gear is moved axially relative to the cutting wheel and / or the cutting wheel relative to the mating gear. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass während der Drehung von Schneidrad und Gegenrad und des Durchlaufens der Kunststoffbahn(en) eine relative Bewegung von Schneidrad und Gegenrad zueinander in axialer Richtung stetig oder in Schüben derart erfolgt, dass die kreisförmige Schneide stets auf dem Zylindermantel des Gegenrades verbleibt.Apparatus according to claim 1 or 2, characterized in that during the rotation of the cutting wheel and mating gear and the passage of the plastic sheet (s) a relative movement of the cutting wheel and mating gear to each other in the axial direction continuously or in batches such that the circular blade always on the cylinder jacket of the counter wheel remains. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass während des Stillstandes oder bei abgehobener Schneide das Schneidrad und das Gegenrad relativ zueinander axial beweglich angeordnet insbesondere axial verstellbar sind.Apparatus according to claim 1 or 2, characterized in that the cutting wheel and the mating gear are arranged relative to each other axially movable during standstill or when the blade is lifted, in particular axially adjustable. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die axiale Bewegung maximal der Breite des Zylindermantels des Gegenrades entspricht.Device according to one of the preceding claims, characterized in that the axial movement corresponds at most to the width of the cylinder jacket of the counter-wheel. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Bewegung abwechselnd in beiden axialen Richtungen erfolgt.Device according to one of the preceding claims, characterized in that the movement takes place alternately in both axial directions. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die axiale Bewegung 0,03 bis 0,3 mm pro Umdrehung des Gegenrades beträgt.Device according to one of the preceding claims, characterized in that the axial movement is 0.03 to 0.3 mm per revolution of the counter wheel.
DE202010018466.5U 2009-07-09 2010-07-01 Device for separating in particular for separating welding plastic sheets Expired - Lifetime DE202010018466U1 (en)

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DE3423674C1 (en) * 1984-06-27 1985-11-21 Bikoma GmbH, Spezialmaschinenfabrik, 5440 Mayen Apparatus for the multi-axis blanking by compression cutting of soft materials, such as paper, plastic, rubber or the like
DE4230938C2 (en) * 1992-09-16 1995-10-05 Heidelberger Druckmasch Ag Device for in-line perforation of continuous material webs
FR2720325B1 (en) * 1994-05-24 1996-08-23 Cera France Welding-cutting head for assembly-cutting machine for superimposed sheet or sheet materials and machines applying them.
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