EP0712372A1 - Cutting device for a foil dispenser - Google Patents

Cutting device for a foil dispenser

Info

Publication number
EP0712372A1
EP0712372A1 EP94922838A EP94922838A EP0712372A1 EP 0712372 A1 EP0712372 A1 EP 0712372A1 EP 94922838 A EP94922838 A EP 94922838A EP 94922838 A EP94922838 A EP 94922838A EP 0712372 A1 EP0712372 A1 EP 0712372A1
Authority
EP
European Patent Office
Prior art keywords
cutting
knife
cutting device
hold
slot
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.)
Granted
Application number
EP94922838A
Other languages
German (de)
French (fr)
Other versions
EP0712372B1 (en
Inventor
Reinhard Hoernlein
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.)
EMSA GmbH
Original Assignee
EMSA GmbH
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 EMSA GmbH filed Critical EMSA GmbH
Publication of EP0712372A1 publication Critical patent/EP0712372A1/en
Application granted granted Critical
Publication of EP0712372B1 publication Critical patent/EP0712372B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B65H35/0073—Details
    • B65H35/008—Arrangements or adaptations of cutting devices
    • B65H35/0086—Arrangements or adaptations of cutting devices using movable cutting elements
    • 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
    • B26D1/04—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 linearly-movable cutting member
    • B26D1/045—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 linearly-movable cutting member for thin material, e.g. for sheets, strips or the like

Definitions

  • the invention relates to a cutting device of a film dispenser for aluminum, clear, paper films or the like.
  • a cutting mechanism that can be moved over the entire width of the film and has a knife that cuts in both directions of movement, the knife of which extends with play through a cutting slot opening into a guide track and this knife part is embedded in a sliding shoe that can be moved along the guide track.
  • Cutting devices for film dispensers are known (EP 0 378 717 AI), in which rotatably mounted * round knives for cutting the aluminum foil and V-shaped knives fixed in the cutting device are provided for cutting the transparent film. Due to the different types of knives, these cutting devices are structurally complex.
  • a cutting device equipped with a knife for the cutting to length of tapes when winding coils (GB-PS 1 601 056), in which the individual knife in the form of a razor blade, which is inclined to the cutting direction, is held in a holder is determined, makes a cut in only one direction, the knife between two rollers and the rollers and the knife essentially Chen are arranged one behind the other.
  • a cutting device has a complicated structure and only allows cuts in one cutting direction.
  • the relatively large angle of attack prevents jamming in an unstable material to be cut.
  • the invention is based on the object of designing a cutting device for a film dispenser of the type mentioned at the outset in such a way that it can be used for films made from a wide variety of materials using only a fixed knife and has small structural dimensions and few individual parts.
  • This object is achieved in that on the outside of the housing of the film dispenser knife part, which are provided on the top and on the bottom of the knife holding the film on the outer wall of the housing and holding the cutters equipped in the cutting slot extending knife sides one Form an angle with respect to the longitudinal plane of the cutting slot, which is held so flat that the cutting edges have a gate and then the boundary edges of the cutting, in particular over the entire cutting path. insert the aluminum foil into the cutting slot and that the hold-down means interact with the cutting point in the cutting plane of the knife.
  • angle ⁇ is not more than approx. 25 °, preferably approx. 15 °, not only does the cutting device have good cutting behavior when cutting aluminum, transparent and paper foils, but also a short overall length of the cutting device.
  • a further shortening of the overall length of the cutting device results from the arrangement according to the invention of a tab or a bridge part which is arranged between the two knife components which cut in different directions.
  • the tab or the bridge part protrude far into the Cutting slot into it and can be fixed there on a sliding block through which the guidance of the cutting device is realized.
  • the length of the cutting device would have to be approximately twice as large if the knife tip of a pointed knife then had to penetrate deeply into the cutting slot.
  • the overall length of the housing would also have to be extended by this value.
  • the flat angle ⁇ especially when cutting aluminum, prevents a bead-like accumulation of aluminum foil pushed onto one another in front of a knife that may be too steep and which can no longer be severed.
  • the hold-down means are recessed in the vicinity of the cutting slot and in the cutting direction, thereby improving the operation of the knife.
  • those hold-down means that do not consist of pairs of rollers are made of slidable or easily slidable plastic material, such as e.g. Nylon, provided.
  • the knife is made of hardened steel and has a hardness of at least 50 to 60 Rockwell grades, making the knife almost wear-free.
  • the cutting edges of the knife separate the respective film in the transition area of the cutting edges to the cutting slot. If, after many hours of operation of the cutter, the cutter has lost some sharpness in this area can be as practice shows, the aluminum foil still einwanc ⁇ 'rei cut. The transparent films move out of the area lost in sharpness into the cutting slot and are gripped and cut there by an unused cutting part.
  • the cutting of transparent film is wear-free for the knife.
  • the interaction of the knife, the hold-down means and the edges of the cutting slot ensure that the film to be cut is inserted into the cutting slot, ie that the parts of the film lying against the cutting slot are pulled a little into the cutting slot and slightly bent there ⁇ the.
  • This behavior of the film in the arrangement of the cutting device according to the invention significantly improves the cutting process.
  • the single knife of the cutting device can be made in one piece. However, there is also the option of making the knife out of several components, e.g. to be composed of three components. These knife parts are either placed in a shell-like handle part consisting of two parts, which can be connected to a film hinge, on molded pins and recesses. By folding the handle parts together, these knife parts get a firm fit. They can be injected into a holding chassis for assembly with a handle part.
  • a further reduction in the size of the cutting device can be achieved in that the tab or the bridge part is fixed in a slide shoe which has a conicity widening perpendicularly to the plane of the knife with an increasing distance from the knife and which is conical in the cutting slot Counter surfaces is guided, whereby to ensure a good cutting behavior, the side of the slide shoe facing the knife should lie back relative to the housing surfaces for contacting the film.
  • This guidance of the slide shoe in the cutting slot makes additional guide surfaces on the side of the housing facing away from the knife superfluous, and it is also possible to assemble such a slide shoe guided in a conical guide by simply inserting it.
  • the dimensions of the cutting device can thereby be reduced significantly. Further features of the invention result from the subclaims.
  • FIG. 3 shows the knife shown in FIG. 1 with an associated, skid-shaped hold-down device
  • FIG. 4 is a view in the direction of arrow IV in FIG. 3,
  • FIG. 6 is a view in the direction of arrow VI in Fig. 5,
  • Fig. 7 is a one-piece knife in plan
  • FIG. 9 shows a further embodiment of the cutting device in section, with a knife composed of three parts, 10 is a view in the direction of arrow X in FIG. 9,
  • FIG. 11 shows the cutting device according to FIG. 9 in plan view and uncut
  • FIG. 12 shows a further exemplary embodiment of a cutting device in horizontal section with pairs of rollers as
  • FIG. 13 shows a section along the line XIII-XIII in FIG. 12.
  • 16 shows a longitudinal section of a cutting device equipped with two pairs of rollers as hold-down devices
  • FIG. 20 shows a longitudinal section of a cutting device which has leaf spring clips as hold-down means
  • a cutting device with a handle part consisting of two parts, the parts being connected to one another via a film hinge, with the handle part opened,
  • FIG. 23 shows the embodiment according to FIG. 22 with a folded handle part and 24 is a view in the direction of arrow XXIV in FIG. 23.
  • 25 shows a cutting unit with a slide shoe guided inside the cutting slot, basic structure shown in enlarged form
  • 26 is a side view of the cutting unit of FIG. 25
  • the cutting mechanism 1 shown in FIGS. 1 and 2 has an actuating handle 2 in which the fastening part 3 of a knife 4 is embedded.
  • This fastening part of the knife 4 is rectangular in the embodiment shown.
  • a centrally arranged tab 5 which is rectangular in plan in the embodiment shown, which extends through a cutting slot 6 of the housing 7 of the film dispenser and is fixed in a slide shoe 8.
  • This slide shoe 8 is movably mounted parallel to the cutting slot 6 in a guide channel 9 which is delimited by webs 10 extending parallel to the cutting slot 6.
  • the cutting unit 1 is guided in the guide channel 9, while the knife 4 passes through the cutting slot 6 with play on both sides.
  • the knife 4 has a cutting edge 11 on each side facing the possible direction of movement. These cutting edges 11, which start from the fastening part 3, extend over the entire depth of the cutting slot 6 and end at the fastening tab 5.
  • the cutting edges 11 form an angle ⁇ with respect to the longitudinal plane of the cutting slot 6, which is kept so flat that the cutting edges 11 insert the boundary edges of the cut of the film into the cutting slot 6 already during the first cut and then over the entire cutting distance.
  • the angle ⁇ must be less than 20 °. To achieve good cutting conditions and a small overall length of the knife 4 and thus the cutting unit 1, an angle ⁇ is selected which is approximately 15 °.
  • the knife 4 is made of hardened steel and preferably has a hardness of at least 50 to 60 Rockwell degrees.
  • the cutting unit 1 is equipped with hold-down means 12, 14, which are preferably provided on the top and on the underside of the knife 4 and place the film on the housing wall during the movement of the cutting unit 1. If they do not consist of pairs of rollers, these hold-down means 12, 14 are made of sliding . and non-slip plastic material, e.g. made of nylon, which shows very good sliding properties on the matt side of the aluminum foil.
  • the hold-down means are designed as runners 12 which, in the plan according to FIG. 1, stand out from the cutting slot 6 at the free end regions 13 and in the illustrated embodiment have an arcuate course in these end regions 13.
  • two pairs of rollers 14 which are spaced apart in the cutting direction and which hold the knife 4 between them can also be provided as hold-down means.
  • FIG. 8 shows a pair of rollers 14 designed as a hold-down device, in which a roller 15 is equipped with a hollow pin 16 which projects beyond the roller width and which can be inserted into a corresponding receptacle 17 of a second roller 18.
  • the knife 4 is arranged between two pairs of rollers 15, 16. 9, 10 and 11 show a cutting unit 19 which is equipped with a knife which consists of several parts.
  • the knife has two parts 21 equipped with cutting edges 20 and a bridge part 22 between the slide shoe 23 and the actuating handle 24.
  • the parts 21 are enclosed with the exception of the cutting edges 20 by the actuating handle 24, while the bridge part 22 is embedded on the one hand in the actuating handle 24 and on the other hand in the slide shoe 23 or is fastened as parts, as already described.
  • FIGS. 12 and 13 show an exemplary embodiment of a cutting device in which two pairs of rollers 14 spaced apart from one another are provided as hold-down means and are largely encapsulated by the actuating handle 25 in that they are rotatably mounted in receptacles 26 of the actuating handle 25 .
  • the axle journals 27, 28 of the rollers 14 are received by a bearing recess 29 in the actuating handle 25.
  • rollers 14 forming the hold-down device are provided with chamfers 30 adjacent to the knife 4 arranged between the rollers of a pair of rollers 14, so that the roller parts adjacent to the knife 4 do not affect the cutting operation of the knife 4. affect.
  • hold-down means as shown in FIGS. 1, 2, 3, 4, are designed as runners 12 or strips, these hold-down means are recessed in the vicinity of the cutting slot 6 and in the cutting direction, so that the cutting operation is not effected by these hold-down means is impaired and any splash burr is behind.
  • the hold-down devices are designed as strips 31, 32 which engage in the actuating handle
  • the operating handle 24 are integrated or form parts of the operating handle.
  • Strips 32 are parallel to the cutting slot 6 parallel fenden strip 31 angled and form an acute angle with the cutting slot 6.
  • the outer housing surface 33 assigned to the cutting device projects outwards relative to the other outer housing surface 34. This simplifies the cutting of the film insofar as the film, which is subjected to tensile stress by hand, is stretched in the area of the cutting device via the housing projection, which is delimited on the outside by surface 33. This simplifies the handling of the film and the cutting.
  • the front front in the area of the cutting slot 6 can be bulbous or crowned.
  • the cutting device according to FIGS. 14 and 15 has an actuating handle 24 which at the same time forms the hold-down means. It can be seen from FIG. 15 that the actuating handle 24 and thus the hold-down means in the vicinity of the knife 4 have a groove-like recess 34 on each knife side.
  • the chamfers 30 provided on the roller pairs 14 of the embodiment according to FIGS. 16 and 17 act in the same way in the vicinity of the knife 4.
  • endless soft rubber bands 35 are provided as hold-down means, which run around rollers 36 designed as rims, the rollers 36 being provided with pins 37 and being rotatably mounted in the actuating handle 1.
  • the actuating handles 38 are equipped with leaf spring clips 39, which act as hold-down means and can be formed in an arc shape from plastic. These leaf spring clips 39 are designed and arranged in such a way that, during operation, the spring bears slightly under pressure on the outer surface of the housing of the film dispenser or on the film, so that the clips 39 sweep over the film with uniform pressure during cutting.
  • the knife consists of the parts 40 and 41, which are provided with cutting edges 42 and a bridge part 43, through which the handle 44 is connected to the sliding shoe 45.
  • the bridge part 43 has the same thickness as the knife parts 41 and 42, is made of the same material and is hardened.
  • This bridge part 43 is T-shaped and has a transverse web 46, against which the knife parts 40 and 41 bear in a form-fitting manner, and are thus supported.
  • the actuating handle 44 consists of two shell parts 47 and 48, which are preferably connected to one another in an articulated manner via a film hinge 49.
  • the shell part 47 has pins 50, 51 which are inserted through bores 52 in the knife parts 40 and 41 when the handle parts 47 and 48 are folded together.
  • this cutting device can have either pairs of rollers or skids as hold-down means.
  • 25 and 26 show the basic structure of a further advantageous embodiment of a cutting device according to the invention, in which a tab 5 or a bridge part 22, 43 of a knife 4 cutting on both sides is fixed in a slide shoe 8 which is inside the cutting device slot 6 is guided and is held in this cutting slot 6 by a tapering away from the knife 4, increasing conicity.
  • the knife 4 is as described above NEN embodiments between rollers 14 in a grip part 1 and engages with the component formed here as a tab 5 in the cutting slot 6.
  • the cutting slot 6 is formed at least in the area of the cutting slot 6 in a thick-walled housing part which is formed from the two lamella-like housing parts 54 and 55.
  • the cutting slot 6 has a conicity which widens on the side facing away from the knife 4 and which is preferably formed in the range of a few degrees of angle, preferably approximately 10 °.
  • the slide shoe 8, on which the knife 4 can be fixed here with its tab 5, has a rectified and equally large conicity, so that the slide shoe 8 is guided in the cutting slot 6 after insertion in such a way that its facing the knife , non-conical outer surface is a little behind the outer housing surface 33, on which the film 53 rests during the cutting process. This creates sufficient space for cutting the film 53 with the knife 4, into which the cutters 11 arranged on both sides penetrate.
  • slide shoe 8, knife 4, rollers 14 and handle 1 takes place in such a way that by slightly pushing apart the lamella-like housing components 54 and 55, the cutting slot 6 is briefly expanded so that the preassembled unit made of slide shoe 8, knife 4 and handle 1 with the sliding shoe 8 can be inserted into the cutting slot. Due to the conical fit of the sliding block 8 and the cutting slot 6, after the lamellae 54 and 55 have been released, it is slidably clamped in the two sides of the lamellae 54 and 55 forming the cutting slot 6.
  • the dimensional arrangement of the slide shoe 8, knife 4 and rollers 14 allows the handle piece 1 to be easily moved on the outer surface 33 of the housing, the film 53 being able to be cut.
  • This design with a sliding shoe 8 guided in the cutting slot 6 permits a considerably more compact design of the cutting device and eliminates the need for the construction of specially required guide strips on the rear side of the associated housing walls 54 and 55 the length of the sliding block 8, which essentially corresponds to the length of the knife 4, ensures a uniform and precise guidance of the cutting device.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Vending Machines For Individual Products (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

A cutting device for a foil dispenser for aluminium, transparent, paper foils and the like has a cutting mechanism capable of moving over the whole width of the foil and having a blade that cuts in both directions of displacement. The blade extends with play through a cutting slot that opens into a guiding tract. This part of the blade is embedded in a sliding shoe capable of moving along the guiding track. The cutting mechanism has only one blade (4) fixed in relation to an actuating handle (2, 24, 44) for all types of foils. The cutting edges (11, 20) of the sides of the blade, which extend into a cutting slot (6), are symmetrically arranged in relation to a central link plate (5) or bridge (22, 43) and form an acute angle alpha with a longitudinal edge of the cutting slot (6); alpha equals less than 25 DEG , preferably about 15 DEG . In addition, the cutting device has holding down means arranged at the cutting spot in the cutting plane that cooperate with the blade (4) and that press the foil on the outer wall of the housing onto the part of the blade that is located outside of the housing (7) of the foil dispenser.

Description

Schneidvorrichtung eines Folienspenders Cutting device of a film dispenser
Die Erfindung bezieht sich auf eine Schneidvorrichtung eines Folienspenders für Alu-, Klarsieht-, Papierfolien o.dgl. mit einem über die gesamte Folienbreite bewegbaren, ein in beiden Bewegungsrichtungen schneidendes Messer aufweisenden Schneid¬ werk, dessen Messer sich mit Spiel durch einen in eine Füh¬ rungsbahn einmündenden Schneidschlitz erstreckt und dieses Mes¬ serteil in einem längs der Führungsbahn bewegbaren Gleitschuh eingebettet ist.The invention relates to a cutting device of a film dispenser for aluminum, clear, paper films or the like. With a cutting mechanism that can be moved over the entire width of the film and has a knife that cuts in both directions of movement, the knife of which extends with play through a cutting slot opening into a guide track and this knife part is embedded in a sliding shoe that can be moved along the guide track.
Es sind Schneidvorrichtungen für Folienspender bekannt (EP 0 378 717 AI) , in denen drehbar gelagert* Rundmesser zum Schnei¬ den der Alufolie und in der Schneidvomchtung festgelegte, V- förmige Messer zum Schneiden der Klarsichtfolie vorgesehen sind. Aufgrund der verschiedenen Messerarten sind diese Schneidvorrichtungen konstruktiv aufwendig.Cutting devices for film dispensers are known (EP 0 378 717 AI), in which rotatably mounted * round knives for cutting the aluminum foil and V-shaped knives fixed in the cutting device are provided for cutting the transparent film. Due to the different types of knives, these cutting devices are structurally complex.
Es ist ferner bekannt, zum Schneiden einer angefeuchteten Stoffbahn eine mit einem Messer ausgerüstete Schneidvorrichtung zu verwenden (DE-AS 1 946 081) . Das Messer ist mit einer Spitze versehen und schneidet bei einer Bewegung der Schneidvorrich¬ tung in beiden Richtungen. Da der Schnitt im Bereich der Spitze erfolgt, ist dieses Messer nicht zum Schneiden von Folien aus den unterschiedlichsten Materialien geeignet.It is also known to use a cutting device equipped with a knife for cutting a moistened fabric web (DE-AS 1 946 081). The knife is provided with a tip and cuts in both directions when the cutting device moves. Since the cut is made in the area of the tip, this knife is not suitable for cutting foils from a wide variety of materials.
Es ist weiterhin bekannt, für das Ablängschneiden von Bändern beim Bewickeln von Spulen eine mit einem Messer ausgerüstete Schneidvorrichtung zu verwenden (GB-PS 1 601 056) , bei der das einzelne zur Schnittrichtung schräggestellte Messer in Form ei¬ ner Rasierklinge, die in einem Halter festgelegt wird, einen Schnitt in nur einer Richtung ausführt, wobei das Messer zwi- sehen zwei Rollen und die Rollen sowie das Messer im wesentli- chen hintereinander angeordnet sind. Eine derartige Schneidvor¬ richtung zeigt einen komplizierten Aufbau und läßt auch nur Schnitte in einer Schneidrichtung zu. Außerdem ist durch den relativ großen Anstellwinkel ein Verhaken in einem labilen Schneidgut nicht sicher auszuschließen.It is furthermore known to use a cutting device equipped with a knife for the cutting to length of tapes when winding coils (GB-PS 1 601 056), in which the individual knife in the form of a razor blade, which is inclined to the cutting direction, is held in a holder is determined, makes a cut in only one direction, the knife between two rollers and the rollers and the knife essentially Chen are arranged one behind the other. Such a cutting device has a complicated structure and only allows cuts in one cutting direction. In addition, the relatively large angle of attack prevents jamming in an unstable material to be cut.
Der Erfindung liegt die Aufgabe zugrunde, eine Schneidvorrich¬ tung eines Folienspenders der eingangs genannten Art so zu gestalten, daß sie unter Verwendung ausschließlich eines feststehenden Messers für Folien aus verschiedensten Materia- lien eingesetzt werden kann sowie geringe bauliche Abmaße und wenige Einzelteile aufweist.The invention is based on the object of designing a cutting device for a film dispenser of the type mentioned at the outset in such a way that it can be used for films made from a wide variety of materials using only a fixed knife and has small structural dimensions and few individual parts.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß an dem außerhalb des Gehäuses des Folienspender liegenden Messerteil, der an Ober- und an der Unterseite des Messers die Folie an die Gehäuseaußenwand legende Niederhaltemittel vorgesehen sind und die mit Schneiden ausgestatteten, sich in den Schneidschlitz erstreckenden Messerseiten einen Winkel gegenüber der Längsebene des Schneidschlitzes bilden, der so flach gehalten ist, daß die Schneiden einen Anschnitt und dann auf der ge- samten Schneidstrecke die Begrenzungsränder des Schnittes ins- bes . der Alufolie in den Schneidschlitz einlegen und daß die Niederhaltemittel mit der Schneidstelle in der Schneidebene des Messers zusammenwirken.This object is achieved in that on the outside of the housing of the film dispenser knife part, which are provided on the top and on the bottom of the knife holding the film on the outer wall of the housing and holding the cutters equipped in the cutting slot extending knife sides one Form an angle with respect to the longitudinal plane of the cutting slot, which is held so flat that the cutting edges have a gate and then the boundary edges of the cutting, in particular over the entire cutting path. insert the aluminum foil into the cutting slot and that the hold-down means interact with the cutting point in the cutting plane of the knife.
Sofern der Winkel α nicht mehr als ca. 25°, vorzugsweise ca. 15° beträgt, ergibt sich nicht nur ein gutes Schnittverhalten der Schneidvorrichtung beim Schneiden von Alu-, Klarsicht- und Papierfolien, sondern auch eine kurze Baulänge der Schneidvor¬ richtung.If the angle α is not more than approx. 25 °, preferably approx. 15 °, not only does the cutting device have good cutting behavior when cutting aluminum, transparent and paper foils, but also a short overall length of the cutting device.
Eine weitere Verkürzung der Baulänge der Schneidvorrichtung er- gibt sich durch die erfindungsgemäße Anordnung einer Lasche oder eines Brückenteiles, das zwischen den beiden in unter¬ schiedlicher Richtung schneidenden Messerbestandteilen angeord¬ net wird. Die Lasche oder das Brückenteil ragen weit in den Schneidschlitz hinein und können dort an einem Gleitschuh fest¬ gelegt werden, durch den die Führung der Schneidvorrichtung re¬ alisiert wird. Ohne die Verwendung einer derartigen Lasche oder eines derartigen Brückenteils würde bei dem dann erfor- derlichen tiefen Eindringen der Messerspitze eines spitzen Mes¬ sers in den Schneidschlitz die Länge der Schneidvorrichtung ca. doppelt so groß sein müssen. Hierdurch würde die Gesamtbaulänge des Gehäuses um diesen Wert ebenfalls verlängert werden müssen.A further shortening of the overall length of the cutting device results from the arrangement according to the invention of a tab or a bridge part which is arranged between the two knife components which cut in different directions. The tab or the bridge part protrude far into the Cutting slot into it and can be fixed there on a sliding block through which the guidance of the cutting device is realized. Without the use of such a tab or of such a bridge part, the length of the cutting device would have to be approximately twice as large if the knife tip of a pointed knife then had to penetrate deeply into the cutting slot. As a result, the overall length of the housing would also have to be extended by this value.
Der flache Winkel α verhindert vor allem beim Schneiden von Aluminium, daß sich vor einem ggf. zu steil stehenden Messer eine aufeinander geschobene, wulstförmige Ansammlung von Alumi¬ niumfolie bildet, die nicht mehr durchtrennt werden kann.The flat angle α, especially when cutting aluminum, prevents a bead-like accumulation of aluminum foil pushed onto one another in front of a knife that may be too steep and which can no longer be severed.
Bei einer vorteilhaften Ausführungsform der Erfindung sind die Niederhaltemittel im Nahbereich des Schneidschlitzes und in Schneidrichtung nutartig ausgespart, wodurch die Arbeitsweise des Messers verbessert wird. Ebenso sind diejenigen Niederhal¬ temittel, die nicht aus Rollenpaaren bestehen, aus gleitfähigem oder leicht rutschbaren Kunststoffmaterial, wie z.B. Nylon, vorgesehen.In an advantageous embodiment of the invention, the hold-down means are recessed in the vicinity of the cutting slot and in the cutting direction, thereby improving the operation of the knife. Likewise, those hold-down means that do not consist of pairs of rollers are made of slidable or easily slidable plastic material, such as e.g. Nylon, provided.
Das Messer besteht aus gehärtetem Stahl und ist mit einer Härte von mindestens 50 bis 60 Rockwell-Graden zu versehen, dadurch ist das Messer nahezu verschleißfrei .The knife is made of hardened steel and has a hardness of at least 50 to 60 Rockwell grades, making the knife almost wear-free.
Die Schneiden des Messers trennen die jeweilige Folie im Über¬ gangsbereich der Schneiden zum Schneidschlitz. Sofern in diesem Bereich nach vielen Betriebsstunden der Schneidvorrichtung die Schneide etwas an Schärfe verloren hat, können, wie die Praxis zeigt, die Alufolien noch einwanc ~'rei geschnitten werden. Die Klarsichtfolien bewegen sich aus Gern an Schärfe verlorenen Be¬ reich in den Schneidschlitz hinein und werden dort von einem nicht abgenutzten Schneidenteil erfaßt und geschnitten.The cutting edges of the knife separate the respective film in the transition area of the cutting edges to the cutting slot. If, after many hours of operation of the cutter, the cutter has lost some sharpness in this area can be as practice shows, the aluminum foil still einwanc ~ 'rei cut. The transparent films move out of the area lost in sharpness into the cutting slot and are gripped and cut there by an unused cutting part.
Das Schneiden von Klarsichtfolie ist für das Messer verschlei߬ frei . Das Zusammenwirken des Messers, der Niederhaltemittel sowie der Kanten des Schneidschlitzes sorgen dafür, daß die zu schnei¬ dende Folie in den Schneidschlitz eingelegt wird, d.h. daß die am Schneidschlitz anliegenden Partien der Folie in den Schneid- schlitz ein Stück hineingezogen und dort leicht umgebogen wer¬ den. Durch dieses Verhalten der Folie in der erfindungsgemäßen Anordnung der Schneidvorrichtung wird der Schneidvorgang deut¬ lich verbessert.The cutting of transparent film is wear-free for the knife. The interaction of the knife, the hold-down means and the edges of the cutting slot ensure that the film to be cut is inserted into the cutting slot, ie that the parts of the film lying against the cutting slot are pulled a little into the cutting slot and slightly bent there ¬ the. This behavior of the film in the arrangement of the cutting device according to the invention significantly improves the cutting process.
Das einzige Messer der Schneidvorrichtung kann einstückig aus- gebildet sein. Es besteht aber auch die Möglichkeit, das Messer aus mehreren Bauteilen, z.B. aus drei Bauteilen zusammenzuset¬ zen. Diese Messerteile werden entweder in ein aus zwei Teilen bestehendes schalenartiges Griffteil, welches mit einem Film¬ scharnier verbunden sein kann, auf angeformte Zapfen und Aus- nehmungen eingelegt. Durch das Zusammenklappen der Griffteile erhalten diese Messerteile einen festen Sitz. Sie können in ein Haltechassis zur Montage mit einem Griffteil eingespritzt wer¬ den.The single knife of the cutting device can be made in one piece. However, there is also the option of making the knife out of several components, e.g. to be composed of three components. These knife parts are either placed in a shell-like handle part consisting of two parts, which can be connected to a film hinge, on molded pins and recesses. By folding the handle parts together, these knife parts get a firm fit. They can be injected into a holding chassis for assembly with a handle part.
Eine weitere Verringerung der Baugröße der Schneidvorrichtung ist dadurch erzielbar, daß die Lasche oder das Brückenteil in einem Gleitschuh festgelegt wird, der eine senkrecht zur Ebene des Messers sich mit vergrößerndem Abstand zum Messer erwei¬ ternde Konizität aufweist und der im Schneidschlitz an entspre¬ chenden konischen Gegenflächen geführt ist, wobei zum Gewähr- leisten eines guten Schnittverhaltens die dem Messer zugewandte Seite des Gleitschuhs gegenüber den Gehäuseflächen zur Anlage der Folie zurückliegen sollte. Durch diese Führung des Gleit¬ schuhs im Schneidschlitz werden zusätzliche Führungsflächen auf der dem Messer abgewandten Seite des Gehäuses überflüssig, ebenfalls ist eine Montage eines derartigen, in einer konischen Führung geführten Gleitschuhs durch einfaches Einstecken reali¬ sierbar. Die Abmessungen der Schneidvorrichtung lassen sich hierdurch deutlich reduzierenn. Weitere Merkmale der Erfindung ergeben sich aus den Unteran¬ sprüchen.A further reduction in the size of the cutting device can be achieved in that the tab or the bridge part is fixed in a slide shoe which has a conicity widening perpendicularly to the plane of the knife with an increasing distance from the knife and which is conical in the cutting slot Counter surfaces is guided, whereby to ensure a good cutting behavior, the side of the slide shoe facing the knife should lie back relative to the housing surfaces for contacting the film. This guidance of the slide shoe in the cutting slot makes additional guide surfaces on the side of the housing facing away from the knife superfluous, and it is also possible to assemble such a slide shoe guided in a conical guide by simply inserting it. The dimensions of the cutting device can thereby be reduced significantly. Further features of the invention result from the subclaims.
Ausführungsbeispiele der Schneidvorrichtung sind in den Zeich¬ nungen dargestellt und werden im folgenden beschrieben. Es zei¬ gen:Exemplary embodiments of the cutting device are shown in the drawings and are described below. It shows:
Fig. 1 eine Schneidvorrichtung und den zugeordneten Teil des Gehäuses eines Folienspenders im Grundriß,1 is a cutting device and the associated part of the housing of a film dispenser in plan,
Fig. 2 eine Ansicht in Richtung des Pfeiles II,2 is a view in the direction of arrow II,
Fig. 3 das in der Fig. 1 aufgezeigte Messer mit zugeordne¬ tem, kufenförmig ausgebildetem Niederhalter,3 shows the knife shown in FIG. 1 with an associated, skid-shaped hold-down device,
Fig. 4 eine Ansicht in Richtung des Pfeiles IV in Fig. 3,4 is a view in the direction of arrow IV in FIG. 3,
Fig. 5 das Messer der Schneidvorrichtung im Grundriß mit aufgesetzten Rollenpaaren, die als Niederhalter für die zu schneidende Folie wirken,5 the knife of the cutting device in plan with attached roller pairs, which act as hold-downs for the film to be cut,
Fig. 6 eine Ansicht in Richtung des Pfeiles VI in Fig. 5,6 is a view in the direction of arrow VI in Fig. 5,
Fig. 7 ein einstückiges Messer im Grundriß undFig. 7 is a one-piece knife in plan and
Fig. 8 im Schnitt ein als Niederhalter wirkendes Rollenpaar, zwischen dem das Messer eingespannt ist,8 shows in section a pair of rollers acting as a hold-down device, between which the knife is clamped,
Fig. 9 ein weiteres Ausführungsbeispiel der Schneidvor¬ richtung im Schnitt, mit einem aus drei Teilen sich zusammensetzenden Messer, Fig. 10 eine Ansicht in Richtung des Pfeiles X in Fig. 9,9 shows a further embodiment of the cutting device in section, with a knife composed of three parts, 10 is a view in the direction of arrow X in FIG. 9,
Fig. 11 die Schneidvorrichtung nach der Fig. 9 im Grundriß, und ungeschnitten,11 shows the cutting device according to FIG. 9 in plan view and uncut,
Fig. 12 ein weiteres Ausführungsbeispiel einer Schneidvor- richtung im Horizontalschnitt mit Rollenpaaren als12 shows a further exemplary embodiment of a cutting device in horizontal section with pairs of rollers as
Niederhalter undHold-down and
Fig. 13 einen Schnitt nach der Linie XIII-XIII in Fig. 12.13 shows a section along the line XIII-XIII in FIG. 12.
Fig. 14 eine weitere Ausführungsform der Schneidvorrichtung im Längsschnitt,14 shows a further embodiment of the cutting device in longitudinal section,
Fig. 15 einen Schnitt nach der Linie XV-XV in in Fig. 14,15 shows a section along the line XV-XV in FIG. 14,
Fig. 16 eine mit zwei Rollenpaaren als Niederhalter ausge¬ stattete Schneidvorrichtung im Längsschnitt,16 shows a longitudinal section of a cutting device equipped with two pairs of rollers as hold-down devices,
Fig. 17 einen Schnitt nach der Linie XVII-XVII in Fig. 16,17 shows a section along the line XVII-XVII in FIG. 16,
Fig. 18 eine Schneidvorrichtung im Längsschnitt, die als Nie- derhaltemittel endlose Weichgummibänder aufweist,18 shows a cutting device in longitudinal section, which has endless soft rubber bands as holding-down means,
Fig. 19 einen Schnitt nach der Linie XIX-XIX in Fig. 18,19 is a section along the line XIX-XIX in Fig. 18,
Fig. 20 einen Schneidvorrichtung im Längsschnitt, die als Niederhaltemittel Blattfederbügel aufweist,20 shows a longitudinal section of a cutting device which has leaf spring clips as hold-down means,
Fig. 21 einen Schnitt nach der Linie XXI-XXI in Fig. 20,21 shows a section along the line XXI-XXI in FIG. 20,
Fig. 22 eine Schneidvorrichtung mit einem aus zwei Teilen be¬ stehenden Griffteil, wobei die Teile über ein Film¬ scharnier miteinander verbunden sind, mit auf¬ geklapptem Griffteil,22 a cutting device with a handle part consisting of two parts, the parts being connected to one another via a film hinge, with the handle part opened,
Fig. 23 die Ausführungsform nach der Fig. 22 mit einem zu- sammengeklappten Griffteil und Fig. 24 eine Ansicht in Richtung des Pfeiles XXIV in Fig. 23.FIG. 23 shows the embodiment according to FIG. 22 with a folded handle part and 24 is a view in the direction of arrow XXIV in FIG. 23.
Fig. 25 ein Schneidwerk mit einem innerhalb des Schneid- schlitzes geführten Gleitschuh, prinzipieller Aufbau in Vergrößerung dargestellt25 shows a cutting unit with a slide shoe guided inside the cutting slot, basic structure shown in enlarged form
Fig. 26 Seitenansicht des Schneidwerks der Figur 2526 is a side view of the cutting unit of FIG. 25
Das in den Fig. 1 und 2 aufgezeigte Schneidwerk 1 weist einen Betätigungsgriff 2 auf, in dem der Befestigungsteil 3 eines Messers 4 eingebettet ist. Dieser Befestigungsteil des Messers 4 ist in dem dargestellten Ausführungsbeispiel rechteckförmig ausgebildet. Einstückig mit dem Befestigungsteil 3 des Messers 4 ist eine mittig angeordnete, im dargestellten Ausführungsbei¬ spiel im Grundriß rechteckförmige Lasche 5, die sich durch einen Schneidschlitz 6 des Gehäuses 7 des Folienspenders er¬ streckt und in einem Gleitschuh 8 festgelegt ist. Dieser Gleit- schuh 8 ist parallel zum Schneidschlitz 6 bewegbar in einem Führungskanal 9 gelagert, der durch parallel zu dem Schneid¬ schlitz 6 sich erstreckende Stege 10 begrenzt wird. Das Schneidwerk 1 erhält seine Führung in dem Führungskanal 9, wäh¬ rend das Messer 4 den Schneidschlitz 6 mit beidseitigem Spiel durchtritt.The cutting mechanism 1 shown in FIGS. 1 and 2 has an actuating handle 2 in which the fastening part 3 of a knife 4 is embedded. This fastening part of the knife 4 is rectangular in the embodiment shown. In one piece with the fastening part 3 of the knife 4 is a centrally arranged tab 5, which is rectangular in plan in the embodiment shown, which extends through a cutting slot 6 of the housing 7 of the film dispenser and is fixed in a slide shoe 8. This slide shoe 8 is movably mounted parallel to the cutting slot 6 in a guide channel 9 which is delimited by webs 10 extending parallel to the cutting slot 6. The cutting unit 1 is guided in the guide channel 9, while the knife 4 passes through the cutting slot 6 with play on both sides.
Das Messer 4 weist an jeder der möglichen Bewegungsrichtung zugewandten Seite eine Schneide 11 auf. Diese Schneiden 11, die von dem Befestigungsteil 3 ausgehen, erstrecken sich über die gesamte Tiefe des Schneidschlitzes 6 und enden an der Befestigungslasche 5.The knife 4 has a cutting edge 11 on each side facing the possible direction of movement. These cutting edges 11, which start from the fastening part 3, extend over the entire depth of the cutting slot 6 and end at the fastening tab 5.
Die Schneiden 11 bilden gegenüber der Längsebene des Schneid¬ schlitzes 6 einen Winkel α, der so flach gehalten ist, daß die Schneiden 11 bereits beim Anschnitt und dann auf der gesamten Schneidstrecke die Begrenzungsränder des Schnittes der Folie in den Schneidschlitz 6 einlegen.The cutting edges 11 form an angle α with respect to the longitudinal plane of the cutting slot 6, which is kept so flat that the cutting edges 11 insert the boundary edges of the cut of the film into the cutting slot 6 already during the first cut and then over the entire cutting distance.
Der Winkel α muß kleiner als 20° sein. Zur Erzielung guter Schneidverhältnisse und einer geringen Baulänge des Messers 4 und damit des Schneidwerks 1 wird ein Winkel α gewählt, der ca. 15° beträgt.The angle α must be less than 20 °. To achieve good cutting conditions and a small overall length of the knife 4 and thus the cutting unit 1, an angle α is selected which is approximately 15 °.
Das Messer 4 besteht aus gehärtetem Stahl und weist vorzugs¬ weise eine Härte von mindestens 50 bis 60 Rockwell-Graden auf.The knife 4 is made of hardened steel and preferably has a hardness of at least 50 to 60 Rockwell degrees.
Das Schneidwerk 1 ist mit Niederhaltemitteln 12, 14 ausgerü¬ stet, die vorzugsweise an der Ober- und an der Unterseite des Messers 4 vorgesehen sind und die Folie während der Bewegung des Schneidwerks 1 an die Gehäusewand legen. Sofern sie nicht aus Rollenpaaren bestehen, sind diese Niederhaltemittel 12, 14 aus gleit- .und rutschfähigem Kunststoffmaterial hergestellt, z.B. aus Nylon, welches auf der matten Seite der Alufolie sehr gute Rutscheigenschaften zeigt.The cutting unit 1 is equipped with hold-down means 12, 14, which are preferably provided on the top and on the underside of the knife 4 and place the film on the housing wall during the movement of the cutting unit 1. If they do not consist of pairs of rollers, these hold-down means 12, 14 are made of sliding . and non-slip plastic material, e.g. made of nylon, which shows very good sliding properties on the matt side of the aluminum foil.
In dem Ausführungsbeispiel nach den Fig. 1 und 2 und bei der Darstellung in den Figuren 3 und 4 werden die Niederhaltemittel als Kufen 12 ausgebildet, die im Grundriß nach der Fig. 1 sich an den freien Endbereichen 13 vom Schneidschlitz 6 sich nach außen abheben und in der dargestellten Ausführungsform in die¬ sen Endbereichen 13 einen bogenförmigen Verlauf aufweisen.In the exemplary embodiment according to FIGS. 1 and 2 and in the illustration in FIGS. 3 and 4, the hold-down means are designed as runners 12 which, in the plan according to FIG. 1, stand out from the cutting slot 6 at the free end regions 13 and in the illustrated embodiment have an arcuate course in these end regions 13.
Aus der Fig. 2 folgt, daß das Messer 4 diesen kufenförmigen Niederhalter 12, 13 mittig durchtritt.From Fig. 2 it follows that the knife 4 passes through this skid-shaped hold-down device 12, 13 in the middle.
Als Niederhaltemittel können jedoch auch, wie in den Figuren 5 und 6 dargestellt, zwei in Schneidrichtung beabstandete Rollen¬ paare 14 vorgesehen werden, die das Messer 4 zwischen sich auf¬ nehmen.However, as shown in FIGS. 5 and 6, two pairs of rollers 14 which are spaced apart in the cutting direction and which hold the knife 4 between them can also be provided as hold-down means.
In der Fig. 8 ist ein als Niederhalter ausgebildetes Rollenpaar 14 aufgezeigt, in dem eine Rolle 15 mit einem die Rollenbreite überragenden Hohlzapfen 16 ausgerüstet ist, der in eine ent¬ sprechende Aufnahme 17 einer zweiten Rolle 18 eingesteckt wer¬ den kann. Auch bei dieser Ausführungsform ist zwischen jeweils zwei Rollenpaaren 15, 16 das Messer 4 angeordnet. Die Fig. 9, 10 und 11 zeigen ein Schneidwerk 19, das mit einem Messer ausgerüstet ist, das aus mehreren Teilen besteht. Das Messer weist zwei mit Schneiden 20 ausgerüstete Teile 21 und ein Brückenteil 22 zwischen Gleitschuh 23 und dem Betätigungs- griff 24 auf. Die Teile 21 werden mit Ausnahme der Schneiden 20 vom Betätigungsgriff 24 umschlossen, während das Brückenteil 22 einerseits im Betätigungsgriff 24 und andererseits im Gleit¬ schuh 23 eingebettet ist oder als Teile - wie bereits beschrie¬ ben - befestigt sind.8 shows a pair of rollers 14 designed as a hold-down device, in which a roller 15 is equipped with a hollow pin 16 which projects beyond the roller width and which can be inserted into a corresponding receptacle 17 of a second roller 18. In this embodiment too, the knife 4 is arranged between two pairs of rollers 15, 16. 9, 10 and 11 show a cutting unit 19 which is equipped with a knife which consists of several parts. The knife has two parts 21 equipped with cutting edges 20 and a bridge part 22 between the slide shoe 23 and the actuating handle 24. The parts 21 are enclosed with the exception of the cutting edges 20 by the actuating handle 24, while the bridge part 22 is embedded on the one hand in the actuating handle 24 and on the other hand in the slide shoe 23 or is fastened as parts, as already described.
Die Fig. 12 und 13 zeigen ein Ausführungsbeispiel einer Schneidvorrichtung, bei der als Niederhaltemittel zwei in Ab¬ stand zueinanderstehende Rollenpaare 14 vorgesehen sind, die weitgehend dadurch durch den Betätigungsgriff 25 verkapselt werden, daß sie in Aufnahmen 26 des Betätigungsgriffs 25 dreh- bar gelagert sind. Die Achszapfen 27, 28 der Rollen 14 werden von einer Lagerausnehmung 29 des Betätigungsgriffε 25 aufgenom¬ men.12 and 13 show an exemplary embodiment of a cutting device in which two pairs of rollers 14 spaced apart from one another are provided as hold-down means and are largely encapsulated by the actuating handle 25 in that they are rotatably mounted in receptacles 26 of the actuating handle 25 . The axle journals 27, 28 of the rollers 14 are received by a bearing recess 29 in the actuating handle 25.
Aus der Fig. 13 ist zu entnehmen, daß die den Niederhalter bil¬ denden Rollen 14 benachbart dem zwischen den Rollen eines Rollenpaares 14 angeordneten Messer 4 mit Fasen 30 versehen sind, so daß die dem Messer 4 benachbarten Rollenteile den Schneidbetrieb des Messers 4 nicht, beeinträchtigen.It can be seen from FIG. 13 that the rollers 14 forming the hold-down device are provided with chamfers 30 adjacent to the knife 4 arranged between the rollers of a pair of rollers 14, so that the roller parts adjacent to the knife 4 do not affect the cutting operation of the knife 4. affect.
Sofern die Niederhaltermittel, wie in den Fig. 1, 2, 3, 4 dargestellt, als Kufen 12 oder Leisten ausgebildet sind, sind diese Niederhaltemittel im Nahbereich des Schneidschlitzes 6 und in Schneidrichtung nutartig ausgespart, so daß der Schneid¬ betrieb durch diese Niederhaltemittel nicht beeinträchtigt wird und ein etwaiger Spritzgrat zurückliegt.If the hold-down means, as shown in FIGS. 1, 2, 3, 4, are designed as runners 12 or strips, these hold-down means are recessed in the vicinity of the cutting slot 6 and in the cutting direction, so that the cutting operation is not effected by these hold-down means is impaired and any splash burr is behind.
Bei der Ausführung nach den Fig. 10 und 11 sind die Niederhal- ter als Leisten 31, 32 ausgebildet, die in den BetätigungsgriffIn the embodiment according to FIGS. 10 and 11, the hold-down devices are designed as strips 31, 32 which engage in the actuating handle
24 integriert sind bzw. Teile des Betätigungsgriffs bilden. Die24 are integrated or form parts of the operating handle. The
Leisten 32 sind gegenüber der zum Schneidschlitz 6 parallellau- fenden Leiste 31 abgewinkelt und bilden mit dem Schneidschlitz 6 einen spitzen Winkel.Strips 32 are parallel to the cutting slot 6 parallel fenden strip 31 angled and form an acute angle with the cutting slot 6.
In der Fig. 2 springt die der Schneidvorrichtung zugeordnete Gehäuseaußenfläche 33 gegenüber der übrigen Gehäuseaußenfläche 34 nach außen hin vor. Hierdurch wird das Schneiden der Folie insofern vereinfacht, als die Folie, die ja von Hand aus zugbe- lastet wird, im Bereich der Schneidvorrichtung über den Gehäu¬ sevorsprung, der nach außen durch die Fläche 33 begrenzt wird, gespannt wird. Die Handhabung der Folie und das Schneiden wer- den hierdurch vereinfacht. Ebenso kann die Vorderfront im Be¬ reich des Schneidschlitzes 6 bauchig oder ballig sein.In FIG. 2, the outer housing surface 33 assigned to the cutting device projects outwards relative to the other outer housing surface 34. This simplifies the cutting of the film insofar as the film, which is subjected to tensile stress by hand, is stretched in the area of the cutting device via the housing projection, which is delimited on the outside by surface 33. This simplifies the handling of the film and the cutting. Likewise, the front front in the area of the cutting slot 6 can be bulbous or crowned.
Die Schneidvorrichtung nach den Fig. 14 und 15 weist einen Be¬ tätigungsgriff 24 auf, der gleichzeitig die Niederhaltemittel bildet. Aus der Fig. 15 ist erkennbar, daß der Betätigungsgriff 24 und damit die Niederhaltemittel im Nahbereich des Messers 4 an jeder Messerseite eine nutartige Aussparung 34 aufweisen.The cutting device according to FIGS. 14 and 15 has an actuating handle 24 which at the same time forms the hold-down means. It can be seen from FIG. 15 that the actuating handle 24 and thus the hold-down means in the vicinity of the knife 4 have a groove-like recess 34 on each knife side.
In gleicher Weise wirken die an den Rollenpaaren 14 der Ausfüh¬ rung nach den Fig. 16 und 17 vorgesehenen Fasen 30 im Nahbe¬ reich des Messers 4.The chamfers 30 provided on the roller pairs 14 of the embodiment according to FIGS. 16 and 17 act in the same way in the vicinity of the knife 4.
Durch diese Freilegung des Messers 4 in unmittelbarer Nähe des Schneidschlitzes 6 können Teile der Niederhaltemittel den Schneidbetrieb nicht negativ beeinflussen.Due to this exposure of the knife 4 in the immediate vicinity of the cutting slot 6, parts of the hold-down means cannot negatively influence the cutting operation.
Bei der Schneidvorrichtung nach den Fig. 18 und 19 sind als Niederhaltemittel endlose Weichgummibänder 35 vorgesehen, die als Felgen ausgebildete Rollen 36 umlaufen, wobei die Rollen 36 mit Zapfen 37 versehen und im Betätigungsgriff 1 drehbar gela¬ gert sind.In the cutting device according to FIGS. 18 and 19, endless soft rubber bands 35 are provided as hold-down means, which run around rollers 36 designed as rims, the rollers 36 being provided with pins 37 and being rotatably mounted in the actuating handle 1.
Aus der Fig. 19 ergibt sich, daß an jeder Seite des Messers 4 ein endloses Weichgummiband 35 angeordnet ist. Die Schneidvor- richtung arbeitet auch dann mit guter Funktion, wenn nur an ei¬ ner Messerseite ein endloses Weichgummiband 35 vorgesehen ist. Bei dem Ausführungsbeispiel nach den Fig. 20 und 21 sind die Betätigungsgriffe 38 mit Blattfederbügeln 39 ausgerüstet, die als Niederhaltemittel wirken und aus Kunststoff bogenförmig ausgeformt sein können. Diese Blattfederbügel 39 sind so ausge- bildet und angeordnet, daß im Betrieb die Feder leicht unter Druck an der Außenfläche des Gehäuses des Folienspenders bzw. an der Folie anliegt, so daß beim Schneiden die Bügel 39 mit gleichmäßigem Druck über die Folie streichen.19 that an endless soft rubber band 35 is arranged on each side of the knife 4. The cutting device also functions well if an endless soft rubber band 35 is only provided on one knife side. In the exemplary embodiment according to FIGS. 20 and 21, the actuating handles 38 are equipped with leaf spring clips 39, which act as hold-down means and can be formed in an arc shape from plastic. These leaf spring clips 39 are designed and arranged in such a way that, during operation, the spring bears slightly under pressure on the outer surface of the housing of the film dispenser or on the film, so that the clips 39 sweep over the film with uniform pressure during cutting.
Bei der Schneidvorrichtung nach den Fig. 22 bis 24 besteht das Messer aus den Teilen 40 und 41, die mit Schneiden 42 versehen sind und aus einem Brückenteil 43, durch das der Griff 44 mit dem Gleitschuh 45 verbunden ist. Das Brückenteil 43 hat die gleiche Dicke wie die Messerteile 41 und 42, besteht aus dem gleichen Material und ist gehärtet. Dieses Brückenteil 43 ist T-förmig ausgebildet und weist einen Quersteg 46 auf, an dem die Messerteile 40 und 41 formschlüssig anliegen, und sich so¬ mit abstützen.22 to 24, the knife consists of the parts 40 and 41, which are provided with cutting edges 42 and a bridge part 43, through which the handle 44 is connected to the sliding shoe 45. The bridge part 43 has the same thickness as the knife parts 41 and 42, is made of the same material and is hardened. This bridge part 43 is T-shaped and has a transverse web 46, against which the knife parts 40 and 41 bear in a form-fitting manner, and are thus supported.
Der Betätigungsgriff 44 besteht aus zwei Schalenteilen 47 und 48, die vorzugsweise über ein Filmscharnier 49 gelenkig mit- einander verbunden sind. Das Schalenteil 47 weist Zapfen 50, 51 auf, die durch Bohrungen 52 in den Messerteilen 40 und 41 beim Zusammenklappen der Griffteile 47 und 48 gesteckt werden.The actuating handle 44 consists of two shell parts 47 and 48, which are preferably connected to one another in an articulated manner via a film hinge 49. The shell part 47 has pins 50, 51 which are inserted through bores 52 in the knife parts 40 and 41 when the handle parts 47 and 48 are folded together.
Aus den Darstellungen in den Fig. 22, 23 und 24 ergibt sich, daß diese Schneidvorrichtung als Niederhaltemittel entweder Rollenpaare oder aber Kufen aufweisen kann.From the representations in FIGS. 22, 23 and 24 it follows that this cutting device can have either pairs of rollers or skids as hold-down means.
In den Fig. 25 und 26 ist der prinzipielle Aufbau einer weite¬ ren vorteilhaften Ausführungsform einer erfindungsgemäßen Schneidvorrichtung dargestellt, bei der eine Lasche 5 oder ein Brückenteil 22, 43 eines beidseitig schneidenden Messers 4 in einem Gleitschuh 8 festgelegt ist, der innerhalb des Schneid¬ schlitzes 6 geführt ist und durch eine vom Messer 4 wegwei¬ sende, sich vergrößernde Konizität in diesem Schneidschlitz 6 gehalten wird. Das Messer 4 ist wie bei vorstehend beschriebe- nen Ausführungsformen zwischen Rollen 14 in einem Griffteil 1 festgelegt und greift mit dem hier als Lasche 5 ausgebildeten Bauteil in den Schneidschlitz 6 ein. Der Schneidschlitz 6 ist zumindest im Bereich des Schneidschlitzes 6 in einem dickwandig ausgeführten Gehäuseteil gebildet, der aus den beiden lamellen¬ artig angeordneten Gehäuseteilen 54 und 55 gebildet wird. Der Schneidschlitz 6 weist eine sich auf der vom Messer 4 abgewand¬ ten Seite erweiternde Konizität auf, die vorzugsweise im Be¬ reich weniger Winkelgrade, vorzugsweise etwa 10°, gebildet ist. Der Gleitschuh 8, an dem das Messer 4 hier mit seiner Lasche 5 festlegbar ist, weist eine gleichgerichtete und gleichgroße Ko¬ nizität auf, so daß der Gleitschuh 8 nach dem Einstecken in den Schneidschlitz 6 in diesem derart geführt ist, daß seine dem Messer zugewandte, nicht konische Außenfläche ein wenig gegen- über der Gehäuseaußenflache 33 zurückliegt, auf der die Folie 53 während des Schneidvorganges aufliegt. Hierdurch wird ein ausreichender Freiraum für das Durchtrennen der Folie 53 mit dem Messer 4 gebildet, in den die beidseitig angeordneten Schneiden 11 eindringen. Die Montage von Gleitschuh 8, Messer 4, Rollen 14 und Griffstück 1 erfolgt dergestalt, daß durch leichtes Auseinanderschieben der lamellenartig angeordneten Ge¬ häusebestandteile 54 und 55 der Schneidschlitz 6 kurzzeitig er¬ weitert wird, so daß die vormontierte Einheit aus Gleitschuh 8, Messer 4 und Griffstück 1 mit dem Gleitschuh 8 in den Schneid- schlitz eingesteckt werden kann. Durch die zueinander passende Konizität von Gleitschuh 8 und Schneidschlitz 6 wird dieser nach dem Loslassen der Lamellen 54 und 55 gleitend verschiebbar in den beiden, den Schneidschlitz 6 bildenden Seiten der Lamel¬ len 54 und 55 geklemmt. Die maßliche Anordnung von Gleitschuh 8, Messer 4 sowie Rollen 14 erlauben ein problemloses Verschie¬ ben des GriffStückes 1 auf der Gehäuseaußenfläche 33, wobei die Folie 53 geschnitten werden kann. Diese Bauform mit einem in dem Schneidschlitz 6 geführten Gleitschuh 8 erlaubt eine we¬ sentlich kompaktere Ausführung der Schneidvorrichtung und erüb- rigt die Konstruktion speziell benötigter Führungsleisten auf der Rückseite der zugehörigen Gehäusewandung 54 und 55. Durch die Länge des Gleitschuhes 8, die im wesentlichen der Länge des Messers 4 entspricht, ist eine gleichmäßige und genaue Führung der Schneidvorrichtung gewährleistet. 25 and 26 show the basic structure of a further advantageous embodiment of a cutting device according to the invention, in which a tab 5 or a bridge part 22, 43 of a knife 4 cutting on both sides is fixed in a slide shoe 8 which is inside the cutting device slot 6 is guided and is held in this cutting slot 6 by a tapering away from the knife 4, increasing conicity. The knife 4 is as described above NEN embodiments between rollers 14 in a grip part 1 and engages with the component formed here as a tab 5 in the cutting slot 6. The cutting slot 6 is formed at least in the area of the cutting slot 6 in a thick-walled housing part which is formed from the two lamella-like housing parts 54 and 55. The cutting slot 6 has a conicity which widens on the side facing away from the knife 4 and which is preferably formed in the range of a few degrees of angle, preferably approximately 10 °. The slide shoe 8, on which the knife 4 can be fixed here with its tab 5, has a rectified and equally large conicity, so that the slide shoe 8 is guided in the cutting slot 6 after insertion in such a way that its facing the knife , non-conical outer surface is a little behind the outer housing surface 33, on which the film 53 rests during the cutting process. This creates sufficient space for cutting the film 53 with the knife 4, into which the cutters 11 arranged on both sides penetrate. The assembly of slide shoe 8, knife 4, rollers 14 and handle 1 takes place in such a way that by slightly pushing apart the lamella-like housing components 54 and 55, the cutting slot 6 is briefly expanded so that the preassembled unit made of slide shoe 8, knife 4 and handle 1 with the sliding shoe 8 can be inserted into the cutting slot. Due to the conical fit of the sliding block 8 and the cutting slot 6, after the lamellae 54 and 55 have been released, it is slidably clamped in the two sides of the lamellae 54 and 55 forming the cutting slot 6. The dimensional arrangement of the slide shoe 8, knife 4 and rollers 14 allows the handle piece 1 to be easily moved on the outer surface 33 of the housing, the film 53 being able to be cut. This design with a sliding shoe 8 guided in the cutting slot 6 permits a considerably more compact design of the cutting device and eliminates the need for the construction of specially required guide strips on the rear side of the associated housing walls 54 and 55 the length of the sliding block 8, which essentially corresponds to the length of the knife 4, ensures a uniform and precise guidance of the cutting device.

Claims

Schutzansprüche Protection claims
1. Schneidvorrichtung eines Folienspenders für Alu-, Klar¬ sicht-, Papierfolien o. dgl. mit einem über die gesamte Folienbreite bewegbaren, in beiden Bewegungsrichtungen schneidenden, mit Führungsmitteln ausgeführten Schneid¬ werk,1. Cutting device of a film dispenser for aluminum, clear view, paper films or the like with a cutting mechanism which can be moved over the entire film width and cuts in both directions of movement and is designed with guide means,
dadurch gekennzeichnet, daßcharacterized in that
das Schneidwerk für sämtliche Folienarten ausschließ- lieh ein in Bezug auf einen Betätigungsgriff (2, 24,the cutting unit for all types of foils was borrowed in relation to an operating handle (2, 24,
44) feststehendes Messer (4) aufweist, dessen symme¬ trisch zu einer mittigen Lasche (5) oder einem Brückenteil (22, 43) angeordneten Schneiden (11, 20) der sich in einen Schneidschlitz (6) erstreckenden Messerseiten einen flachen Winkel α gegenüber einer44) has a fixed knife (4), the blades (11, 20) of which are arranged symmetrically with respect to a central tab (5) or a bridge part (22, 43) and which have a flat angle α with respect to the knife sides extending into a cutting slot (6) one
Längskante des Schneidschlitzes (6) bilden, wobei α kleiner als 25°, vorzugsweise ca. 15° ist,Form the longitudinal edge of the cutting slot (6), α being less than 25 °, preferably approximately 15 °,
zwischen den Schneiden (11, 20) und der angrenzenden Kontur der Lasche (5) oder des Brückenteils (22, 43) ein stumpfer Winkel ß vorgesehen ist,An obtuse angle β is provided between the cutting edges (11, 20) and the adjacent contour of the tab (5) or the bridge part (22, 43),
daß die Schneiden (11,20) einen Anschnitt und dann auf der gesamten Schneidstrecke die Begrenzungsränder des Schnittes der Folie, insbesondere der Alufolie, in den Schneidschlitz (6) einlegen,that the cutting edges (11, 20) insert a gate and then the boundary edges of the cut of the foil, in particular the aluminum foil, into the cutting slot (6) over the entire cutting distance,
- und mit der Schneidstelle in der Schneidebene des- And with the cutting point in the cutting plane of the
Messers (4) zusammenwirkende, die Folie an die Gehäu¬ seaußenwand legende Niederhaltemittel an dem außer¬ halb des Gehäuses (7) des Folienspenders liegenden Messerteil vorgesehen sind. Knife (4) cooperating hold-down means which place the film on the outer wall of the housing are provided on the knife part lying outside the housing (7) of the film dispenser.
2. Schneidvorrichtung nach Anspruch 1, dadurch gekennzeich¬ net, daß die Niederhaltemittel als Kufen (12, 13) oder als Leisten (31, 32) ausgebildet sind und daß die Endbereiche der Niederhaltemittel sich von der Schneidebene nach außen abheben, wobei die Leisten (31, 32) bevorzugt auch ein¬ stückig mit einem Betätigungsgriff (24) ausführbar sind.2. Cutting device according to claim 1, characterized gekennzeich¬ net that the hold-down means are designed as runners (12, 13) or as strips (31, 32) and that the end regions of the hold-down means stand out from the cutting plane to the outside, the strips ( 31, 32) can preferably also be carried out in one piece with an actuating handle (24).
3. Schneidvorrichtung nach Anspruch 1, gekenr. leh¬ net, daß als Niederhaltemittel jeweils zwei Rolle:,.,aare3. Cutting device according to claim 1, no. leh¬ net that as a hold-down means two roles:,., aare
(14) vorgesehen sind, zwischen denen das Messer (4) ange- ordnet ist.(14) are provided, between which the knife (4) is arranged.
4. Schneidvorrichtung nach einem der vorhergehenden Ansprü¬ che, dadurch gekennzeichnet, daß die Niederhaltemittel im Nahbereich des Messers (4) und des Schneidschlitzes (6) sowie in Schneidrichtung nutartig ausgespart sind.4. Cutting device according to one of the preceding Ansprü¬ surface, characterized in that the hold-down means in the vicinity of the knife (4) and the cutting slot (6) and in the cutting direction are recessed like a groove.
5. Schneidvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß die Niederhaltemittel als bogenförmige, fe¬ dernde Blattfederbügel (39) ausgebildet sind.5. Cutting device according to claim 1, characterized gekenn¬ characterized in that the hold-down means are designed as an arcuate, spring-loaded leaf spring clip (39).
6. Schneidvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß die Niederhaltemittel als endlose Weichgum- mibänder (35) ausgebildet sind, die als Felgen gestaltete6. Cutting device according to claim 1, characterized gekenn¬ characterized in that the hold-down means are designed as endless soft rubber bands (35) designed as rims
Rollen (36) umlaufen.Roll around (36).
7. Schneidvorrichtung nach Anspruch 1, dadurch gekennzeich¬ net, daß die Messer (4, 21) aus gehärtetem Stahl mit einer Härte von 50 bis 60 Rockwell-Graden bestehen.7. Cutting device according to claim 1, characterized gekennzeich¬ net that the knives (4, 21) consist of hardened steel with a hardness of 50 to 60 Rockwell degrees.
8. Schneidvorrichtung nach einem der Ansprüche 1 bis 7, da¬ durch gekennzeichnet, daß das Messer (4) einstückig ist und zur Festlegung im Gleitschuh (8) eine mittig angeord¬ nete, gelochte Lasche (5) aufweist.8. Cutting device according to one of claims 1 to 7, da¬ characterized in that the knife (4) is in one piece and for fixing in the slide shoe (8) has a centrally arranged, perforated tab (5).
9. Schneidvorrichtung nach Anspruch 1, dadurch gekenn- zeichnet, daß das Messer (4) aus mehreren Teilen besteht, vorzugsweise aus zwei mit Schneiden (20) versehenen Teilen (21) und aus einem Brückenteil (22) zwischen dem Gleit¬ schuh (23) und dem Betätigungsgriff (24) .9. Cutting device according to claim 1, characterized in that the knife (4) consists of several parts, preferably of two parts provided with cutting edges (20) (21) and a bridge part (22) between the slide shoe (23) and the actuating handle (24).
10. Schneidvorrichtung nach Anspruch 9, dadurch gekenn¬ zeichnet, daß das Brückenteil (43) T-förmig ausgebildet ist, einen Quersteg (46) aufweist und die Messerteile (40,10. Cutting device according to claim 9, characterized gekenn¬ characterized in that the bridge part (43) is T-shaped, has a crossbar (46) and the knife parts (40,
41) formschlüssig am Brückenteil (43) anliegen.41) fit positively on the bridge part (43).
11. Schneidvorrichtung nach einem der vorhergehenden Ansprü¬ che, dadurch gekennzeichnet, daß die Lasche (5) oder das Brückenteil (22, 43) in einem Gleitschuh (8, 23) festge- legt sind, der eine senkrecht zur Ebene des Messers (4) sich mit vergrößerndem Abstand zum Messer (4) erweiternde Konizität aufweist, im Schneidschlitz (6) an konischen Ge¬ genflächen geführt ist und mit seiner dem Messer (4) zuge¬ wandten Seite im Schneidschlitz (6) gegenüber den Gehäuse- flächen (33) zur Anlage der Folie zurückliegt.11. Cutting device according to one of the preceding claims, characterized in that the tab (5) or the bridge part (22, 43) are fixed in a slide shoe (8, 23) which is perpendicular to the plane of the knife (4th ) has widening taper with increasing distance from the knife (4), is guided in the cutting slot (6) on conical counter surfaces and with its side facing the knife (4) in the cutting slot (6) opposite the housing surfaces (33 ) behind the film.
12. Schneidvorrichtung nach Anspruch 11, dadurch gekenn¬ zeichnet, daß der Betätigungsgriff (44) aus zwei Schalen¬ teilen (47, 48) besteht, die durch ein Filmscharnier (49) miteinander verbunden sind.12. Cutting device according to claim 11, characterized gekenn¬ characterized in that the actuating handle (44) consists of two Schalen¬ parts (47, 48) which are interconnected by a film hinge (49).
13. Schneidvorrichtung nach einem der vorhergehenden An¬ sprüche, dadurch gekennzeichnet, daß die zugeordnete Ge¬ häuseaußenfläche (33) gegenüber der übrigen Gehäuseaußen¬ fläche (34) nach außen vorspringt. 13. Cutting device according to one of the preceding claims, characterized in that the associated housing outer surface (33) projects outwards relative to the other housing outer surface (34).
EP94922838A 1993-08-07 1994-08-04 Cutting device for a foil dispenser Expired - Lifetime EP0712372B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9311833U 1993-08-07
DE9311833U DE9311833U1 (en) 1993-08-07 1993-08-07 Cutting device of a film dispenser
PCT/DE1994/000901 WO1995004694A1 (en) 1993-08-07 1994-08-04 Cutting device for a foil dispenser

Publications (2)

Publication Number Publication Date
EP0712372A1 true EP0712372A1 (en) 1996-05-22
EP0712372B1 EP0712372B1 (en) 1997-04-16

Family

ID=6896533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94922838A Expired - Lifetime EP0712372B1 (en) 1993-08-07 1994-08-04 Cutting device for a foil dispenser

Country Status (4)

Country Link
EP (1) EP0712372B1 (en)
AT (1) ATE151724T1 (en)
DE (2) DE9311833U1 (en)
WO (1) WO1995004694A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758133B1 (en) * 1997-01-09 1999-04-30 Francois Noel TAPE UNWINDER
DE20100760U1 (en) * 2001-01-16 2002-05-23 Emsa Werke Wulf Gmbh & Co Kg foil dispenser
CN107599018A (en) * 2017-08-25 2018-01-19 蔡胜越 Aluminium foil cutting device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495588A1 (en) * 1980-12-05 1982-06-11 Lapalud Cie Emballages Reins DEVICE FOR THE RUNNING AND CUTTING OF A SHEET OF MATERIAL, IN PARTICULAR PACKAGING, STORED IN THE FORM OF A WINDING
DE3525321A1 (en) * 1985-02-23 1986-08-28 Emsa-Werke Wulf GmbH & Co, 4407 Emsdetten Device for holding a foil roll and for taking off pieces cut off from the foil
DE3823335C2 (en) * 1988-07-09 1994-03-24 Wulf & Co Emsa Werk Device for receiving a film roll and for cutting film sections
DE59202224D1 (en) * 1991-03-23 1995-06-22 Melitta Haushaltsprodukte FILM DISPENSER WITH DISCONNECTING DEVICE.
DE9216733U1 (en) * 1992-12-10 1993-01-28 Hoernlein, Reinhard, 3450 Holzminden, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9504694A1 *

Also Published As

Publication number Publication date
WO1995004694A1 (en) 1995-02-16
ATE151724T1 (en) 1997-05-15
DE59402457D1 (en) 1997-05-22
DE9311833U1 (en) 1993-11-18
EP0712372B1 (en) 1997-04-16

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