WO1992016446A2

WO1992016446A2 - Foil dispenser with sectioning device

Info

Publication number: WO1992016446A2
Application number: PCT/DE1992/000234
Authority: WO
Inventors: Reinhard Hörnlein
Original assignee: Melitta Haushaltsprodukte Gmbh & Co. Kommanditgesellschaft
Priority date: 1991-03-23
Filing date: 1992-03-20
Publication date: 1992-10-01
Also published as: EP0535182B1; WO1992016446A3; ATE122641T1; DK0535182T3; EP0535182A1; DE59202224D1; ES2072755T3

Abstract

In a foil dispenser with a sectioning device, a smooth, terminal lug of foil for gripping and withdrawing a fresh sheet of foil is always available and the wear- and maintenance-free sectioning device can be used for all types of foil. To this end, the foil dispenser has housing (1, 11, 21, 101, 110, 120, 130, 140, 160, 180) with a withdrawal slit (5, 15, 25) and a blade carrier (2, 12, 22, 102, 112, 122, 132, 142, 182) with a cutting slide (64, 65, 66, 67, 168, 188, 191, 192), and after a piece of foil is withdrawn the whole surface of the terminal lug of foil (4) is completely covered in a gap (3, 13, 23, 103, 113, 123, 133, 143) between the housing, in the region of the withdrawal slit (5, 15, 25) and a blade groove (6, 16, 26), the blade carrier being moveable with respect to the housing. The foil dispenser with sectioning device can be used, in particular, with household foils such as aluminium foil, paper and transparent foils or similar.

Description

Foil dispenser with separator

The invention relates to a film dispenser with a separating device according to the preamble of the first claim.

Film dispensers with a separating device, in particular for household films such as aluminum, paper, transparent films or the like, are generally known. These household films are usually sold individually packaged in cardboard boxes, which are themselves designed as film dispensers, with the film being able to be separated from the film roll at a sawtooth-shaped tear-off edge. In practice, however, this is often impossible because the cardboard box deforms in the hand during such an attempt or the tear-off edge, which is also made of paper or light metal, bends, so that tear-off is made considerably more difficult and a straight cut is made virtually impossible. Furthermore, with these previously known film dispensers, the remaining film tab still protruding from the film dispenser is not held exactly, so that when the film roll rotates against the pull-out direction when the dispenser housing is slightly shaken, it can rest against the roll. A considerable effort is then required to remove a film web again.

Foil dispensers are also known (EP 0 378 717 AI), the housings of which are provided with removal slots into which the foil flags have to be threaded in order to replace the foil rolls. This often causes considerable problems, in particular in the case of thin transparent films, since the films adhere to the edges of the removal slots and crinkle during insertion. In addition to tear-off edges, separating devices are also known (EP 0265552), which, however, have the disadvantage that only one cutting system which is matched to one type of film is used in each case. If other types of film are placed in the film dispenser, these cutting systems quickly become blunt and can no longer guarantee a clean cut. Furthermore, additional precautions often have to be taken with which a film can be held during a cutting process, which requires additional technical and constructive effort.

The object of the invention is therefore to provide a film dispenser which can be operated in the hand, on the wall or on a table and has a separating device which ensures that any household film can be inserted without major complications, that one after the separation of a sheet of film still protruding from the dispenser housing, for example, even after placing the dispenser in a drawer of a constant length, smoothly ready to be re-engaged and pulled out of another piece of film and the separating device of which is such that it is wear-free and maintenance-free , taking advantage of the different material properties of each film, is equally suitable for all types of film.

The solution to this problem is conveyed by the technical teaching described in the characterizing part of the first claim.

It is particularly advantageous here that, after a piece of film has been cut off, a short, accessible film tab is available for gripping and pulling out a further piece of film, which after removal of a piece of film in the region of the removal slot and the knife groove with one formed by the housing and knife carrier Gap space is covered over the entire surface, the knife carrier being adapted to the contour of the housing and being movable relative thereto, in particular into or both directions can be rotated, swiveled or folded over a hinge. Thanks to the universally applicable separating device, it is further excluded that, for example, an aluminum foil roll is placed in a dispenser that is only intended for transparent films. Possible operating errors are therefore completely excluded from the outset.

According to a preferred embodiment, the housing of the film dispenser and the knife carrier are cylindrical, the knife carrier on the housing being rotatable in one or both directions. This embodiment, like other embodiments, has a removal slot which extends at least to one of the housing ends and through which a film tab for inserting a film roll can be threaded. This removal slot can be very wide by design to make threading as easy as possible. Approximately The knife groove is arranged at 90 ° to the removal slot, the outer diameter of the housing being somewhat reduced in the area in between in order to create the gap space. This gap space has the advantage, on the one hand, that the film is not pressed against the surface of the housing by the knife carrier and therefore does not adhere very firmly to the housing and, on the other hand, that the direction of rotation of the housing within the knife carrier surrounding the housing to a good two thirds is achieved is freely selectable.

In a further advantageous embodiment of the film dispenser, the housing is likewise cylindrical, but the knife carrier surrounds it only in an angular range of approximately 100 °, the side facing away from the cutting slide, which extends approximately beyond the removal slot, being foldable via a hinge is attached to the housing. The foil tab protruding from the removal slot thus remains between the housing and the knife carrier after a foil sheet has been severed, which can be easily folded away to grab the foil flag.

When folding onto the housing, two locking cams, which are located on the side at the front end of the knife carrier, snap into two catches of the housing so that the knife carrier remains in this position even when the film dispenser is put down, so that the film flag also in this version fully covered and preserved in its original length.

Another advantageous embodiment of the invention consists of a likewise cylindrical housing, on the front side of which a knife carrier, which likewise encloses the housing by approximately 100 °, is mounted eccentrically. In the removal position, this is pivoted so that it clears the removal slot and the knife groove, so that a film web can be removed from the housing without any problems. In the closed position, the knife carrier is pivoted over the removal slot and knife groove, so that a gap is also generated here, which protects the film from external influences. As a movement limitation for the pivoting movement of the knife carrier, the housing is provided with a notch in the removal position and with a stop cam in the closed position. Another additional advantage of the above-mentioned film dispenser with separating device can be seen in the storage of the film roll, which is frictionally centered on the conical bodies engaging in the roll, and which, even if both cone bodies are adjustable, can be clamped centrally in the film dispenser. The Verstell¬ mechanism of the cone body can be realized by many different mechanisms, such as. B. by threads that have such a high pitch that they act self-locking or by other locking mechanisms. Embodiments in which the film rolls can be inserted by opening or unscrewing the housing can be emphasized as further advantageous configurations of the subject matter of the invention. The housing is advantageously opened via a hinge which divides the housing into an upper and a lower part. The design of the hinge is freely selectable, the use of a film hinge appears to be an inexpensive variant.

Another embodiment of the housing consists of two partial cylinders, of which the outer encloses the inner in such a way that in a certain position relative to one another a lateral longitudinal opening is created which is wider than a film roll to be inserted thick. For the design of the knife holder, there are several favorable design forms in these two aforementioned basic variants. For example, the knife carrier can have the shape of a cylindrical cutout of approximately 90 °, the inner radius of which approximately coincides with the outer radius of the housing part and at the ends of which disks arranged perpendicular to it are arranged, which engage in the front openings of the housing in such a way that the Knife holder is pivotable on the housing surface. The possible swivel angle of the knife carrier can be limited to any desired angular dimension by housing grooves or the like.

These disks, like the disks inserted in the shell-shaped upper part, have a large central bore which, after a film roll has been inserted and the housing has been closed, can be used to insert a stopper axially into the film roll into the housing. The housing is kept closed in the simplest way and the film roll is centered. To prevent unwanted removal of the plug from the housing, it is equipped with a catch that strikes an inner surface of the housing when the plug is pulled out. Furthermore, it is particularly advantageous to alternately provide the outside of the housing with smooth and matt surface sections, which serve for the functionality of the film dispenser and also for easier handling. For example, thin transparent film adheres specifically to high-gloss surfaces, so that the knife holder can be turned over in any direction without the film lifting off and creasing. On the other hand, the transparent film stands out from the matt surfaces, which can be used to allow a narrow strip with a matt surface in the area of the cut edge in order to be able to lift a small piece of film if it is desired to pull out another film web. Aluminum foil, on the other hand, partly reacts in opposite ways, i.e. it adheres to the rougher surfaces, which is also desirable in the area of the knife groove, as this can produce an excellent cut quality.

The axial storage of a film roll in a dispenser housing can take place not only through the mentioned stopper, but also particularly advantageously via a cuboid block fastened on a spring tab, which is briefly pivoted when the roll is inserted, so that a correspondingly rounded end face is then inside bears against the cardboard sleeve and presses axially against an inward-facing surface of the block on the opposite side against the end face of the cardboard sleeve and the entire film roll is held in this way. The angular position of the cuboid block determines the pull-out resistance of the film web.

A particular advantage of the film dispenser with separating device is the simple construction of the cutting device from at least one rotatable cutting wheel and a cutting knife assigned to it, which cooperate together with a knife groove that is matched to them in the shape. A particularly advantageous embodiment of the separating device according to the invention has two rotatable cutting wheels arranged opposite one another, between which a knife is arranged to be stationary or tiltable about an axis. The cutting wheels simultaneously fulfill one or more tasks during the cutting process. In all cases, it holds the film on both sides of the knife groove fixed to the housing or prestresses it between the two cutting wheels engaging in the knife groove. When cutting aluminum and paper foils, this pretension is already sufficient to exceed the tensile strength of the respective material, so that the knife arranged between the cutting wheels is not stressed, and when the transparent film is separated, the cutting wheels are taut from the spaced-apart cutting wheels is clamped, can separate them easily and almost wear-free.

The most advantageous embodiment of the cutting wheels is a bevel gear shape, the cutting wheels with their large end faces being arranged facing one another in the cutting slide. They are about the same size, have the same thickness, the same cone angle and the same diameter of the smaller end face. Parts of the cone surfaces roll on the active surfaces of the knife groove, a further part of the cone surfaces still extending into the knife groove.

The body edge of one of the two cutting wheels, which is formed by the large end face and the conical surface, is rounded, while the same body edge of the other cutting wheel is formed with sharp edges. In embodiments with only one cutting wheel, only the sharp-edged one is present.

The fixed cutting knife, which can also be designed to be tiltable, has a V-shaped cutting edge, so that it is functional from both end positions of the cutting carriage. The cutting angles are dimensioned so that they are behind the Contour of the cutting wheels lie so that the desired cutting or

Separation effect is made possible in the first place. Below the bevels, however, the knife tip emerges from the contour of the cutting wheels and extends into the area of the groove base.

It can also prove to be very practical and advantageous that the knife carrier can have a further separating device, which is located, for example, on its front edge in the region of the knife guide, and which consists of teeth which are sharp on several sides and which are shaped in this way can that a tooth flank continues to rest on the housing, thereby largely eliminating the risk of injury. The user of such a film dispenser can therefore choose whether he wants to achieve a straight clean cut or a slightly jagged tear-off edge with a very high quality.

The greatest advantage of this film dispenser according to the invention is therefore its versatility. On the one hand, it can be handled with both hands or with one hand, does not require any special attention after use, but can be stored carefree after removing a film, even on damp documents or in drawers, in which it flings back and forth when opening and closing the same is without the risk that the foil flag slips back into the housing and can be threaded back into the removal slot only with difficulty. Furthermore, the film dispenser can be used individually or together with other others in fixed wall mounts or table devices, in which it is stored ready for use or can be easily removed for use.

Further advantageous refinements of the invention emerge together with the further subclaims. Some exemplary embodiments of the subject matter of the invention are described in more detail below with reference to drawings. Show it:

1 cross section through a film dispenser with the intermediate position of the twisted knife carrier indicated, FIG. 2 cross section through a film dispenser with the knife carrier indicated, FIG. 3 cross section through a film dispenser with the knife carrier pivoted in the closed position, FIG. 4 cross section through a film dispenser with the knife carrier pivoted into the removal position ,

5 shows the knife carrier rotated in the cutting position, FIG. 6 intermediate position of a rotatable knife carrier, FIG. 7 shows the removal position of a rotatable knife carrier on the dispenser housing, FIG. 8 view of a film dispenser with a rotatable knife carrier in the removal position, FIG 11 partial view of a film dispenser, FIG. 12 cross section through a film dispenser with rotatable knife carrier in the cutting position, FIG. 13 partial view of the film dispenser from FIG. 12 in section, FIG. 14 cross section through a film dispenser with cutting system for transparent film, FIG. 15 knife variant for cutting aluminum and paper film 16 shows a partial view of FIG. 14 in section, FIG. 17 shows a cross section of the film dispenser with a cutting system for aluminum and paper films, FIG. 18 shows a knife variant for very small rolls, FIG. 19 shows a partial view of FIG. 17 in section, 20 cross section through film dispenser with a cutting system only for transparent film, FIG. 21 partial view of FIG. 20 in section, FIG. 22 cross section through film dispenser for additional tear-off edge, FIG. 23 partial view of the film dispenser according to FIG. 22,

Figure 24 film dispenser with rotatable knife carrier and radial

Row of teeth, FIG. 25 view of the film dispenser according to FIG. 24 with partial section, FIG. 26 longitudinal section through film dispenser with cone bodies adjustable on both sides, FIG. 27 longitudinal section through film dispenser with cone body adjustable on one side, FIG. 28 longitudinal section through film dispenser with latchable cone body,

FIG. 29 top view of the film dispenser shown in FIG. 28, FIG. 30 a wall holder with two film dispensers in view, FIG. 31 a side view of a wall fastening, FIG. 32 a side view of the opposite wall fastening, FIG. 33 top view of a wall fastening according to FIG. 32, FIG 34 a wall mounting variant with two film dispensers, FIG. 35 a side view of the wall mounting according to FIG. 33, FIGS. 36 and 37 each a suspension device for a film dispenser, FIGS. 38 and 39 an open film dispenser,

40 and 41 a closed film dispenser in two views, FIGS. 42 and 43 arrangement of smooth and matt surfaces, FIGS. 44 and 45 a sectional view of a round housing in two views, - H -

Figure 46 and 47 is a sectional view of a housing in two views, Figure 48 is a side view of Figures 9 and 10, unfolded in

Section, Figure 49 is a side view of Figures 9, 10, 11 in the closed state, Figure 50 and 51 is a sectional view of a round housing with

Clamping device for the film roll, Figure 52 and 53 unfolded representation of the film dispenser after

FIGS. 13 and 14, FIGS. 54 and 55 show the variation of a knife carrier in two views, FIGS. 56 and 57 a film dispenser with a laterally producible opening in the open state in two views, FIGS. 58 and 59 film dispensers according to FIGS. 19 and 20 in the removal position FIGS. 60 and 61 two versions of the axial film holder, FIGS. 62 and 63 another version of the film dispenser in the cutting position in two views,

FIGS. 64 and 65 the dispenser according to FIGS. 25 and 26 in the removal position in two views, FIGS. 66 to 69 embodiments of a friction wheel in different views and representations, FIGS. 70 and 71 a further version of a film dispenser in a sectional side view in the closed and opened state, 72 and 73 show a hinged film dispenser in two views, FIGS. 74 and 75 film dispenser according to FIGS. 72 and 73 in the open state in two views,

76 to 83 foil dispenser according to FIGS. 72 to 75 in individual parts FIG. 84 a cross section through a cutting device, FIG. 85 a side view of FIG. 84 in section, FIG. 86 a foil dispenser in longitudinal section, FIG. 87 a cross section through the foil dispenser according to FIG. 86, Figure 88 shows a cross section through a further embodiment of a

Separating device, Figure 89 is a side view of Figure 88 in section, Figure 90 is a cutting slide with an inclined friction wheel.

1 to 37 show variations of the film dispenser with separating device, the housing 1, 11, 21 of which is essentially cylindrical, the inside diameter of which is somewhat larger than that of commercially available household film rolls and the one removal slot 5, 15, 25 for a film web 31 which extends at least up to one housing end or also over the entire housing length. Approximately 90 ° to this removal slot 5, 15, 25, a knife groove 6, 16, 26 is provided on the outside of the housing, which cooperates with the cutting device of the knife holder 2, 12, 22, which will be explained in more detail below.

Furthermore, the cylindrical housing 1, 11, 21 is provided with inwardly directed cone bodies 40, 41, 42, 43, on which a film roll 30 is mounted centrally with friction in the housing. In order to ensure this type of bearing, at least one cone body 40-43 must be axially adjustable. In the case of a conical body 42, this is achieved via a cylindrical end piece which is provided with a thread 45 which interacts with an internal thread 44 of the housing 1. The thread 45 has a very high pitch, which ensures that the friction in the thread is greater than that of the film roll on the conical surface, so that an adjusted pre-tension of a film roll 30 is maintained. The threads 45 are in accordance with the direction of rotation of the film roll 30 or against Direction of rotation equipped with right or left-hand threads.

FIG. 27 shows a conical body 43 which is provided at its cylindrical end with a web 47 which is guided in the removal slot 5 of the housing 1. The web 47 is made slightly narrower than the dimension of the removal slot, so that the housing 1 for mounting a housing cover 51, which engages around the housing 1, snaps into the radial groove, can be easily compressed. In this cover 51, a threaded spindle is rotatably fixed, on which the conical body 43 provided with a through thread 50 is held adjustably.

Another version of the film centering is achieved by means of the conical body 41, the cylindrical end piece of which is also provided with a web 46, which is guided in the removal slot 5 of the housing 1, and the web has notches 48, which have slot catches arranged in the initial region of the removal slot 5 49 cooperate, so that an adjustment of the centering of different roll lengths is also possible here.

A knife carrier 2, 12, 22 is clamped onto the housing 1, 11, 21, the inside diameter of which corresponds to the outside diameter of the housing 1 and which surrounds it in a range of approximately 230 °. The Trennvorric device 33 is arranged in the region of an edge of the knife carrier. Lateral locking cams 7, 17 are also provided in this area, which correspond to detents arranged over the circumference of the housing in order to define defined positions of the knife carrier 2, 12, 22 relative to the

To ensure housing 1, 11, 21. A catch is located in the pull-out direction of the film web 31 behind the knife groove 6 and a further catch is provided through the removal slot 5. In the edge areas of the cylindrical housing 1 in the area between the knife groove 6 and the removal slot 5, the housing can be designed such that a cam 32 is generated by increasing and decreasing wall thickness, on which the locking cam 7 of the knife carrier 2 rests, so that when Rotating the housing 1 and knife carrier 2 against each other creates a larger slot than would be the case if only the cam were guided along the surface of the housing.

The outer diameter of the housing 1 or the housing wall thickness is reduced in the area between the removal slot 5 to just before the knife groove 6 over the length of the knife groove 6 to produce a gap 3. This gap 3 can also be generated or enlarged in that the inside diameter of the knife carrier 2 is made enlarged in this area.

A possible sequence of film removal is shown in FIGS. 5-7. In FIG. 5, the knife carrier 2 is in the cutting position with the film web 31 leading vertically downward. After the longitudinal movement of the cutting carriage along its guide 63, an exactly separated film web can be removed. To remove a piece of film again, the knife carrier 2 is rotated counter to the direction of rotation of the film roll into the removal position, being raised so far from the film swinging around the housing that it remains in its original position. A further possibility of being able to grasp the film flag again is not to rotate the knife carrier 2, but rather the housing 1 counter to the direction of rotation of the film roll, until the knife carrier 12 engages in the desired position in the region of the removal slot. The film web 31 can then be pulled out in any length, after which the knife carrier 2 is rotated around the housing 1 or the housing 1 in the knife carrier 2 such that the separating device 33 engages over the knife groove 6. Since the removal slot 5 and knife groove 6 are arranged approximately at 90 ° to one another, a rotation of approximately 90 ° is also required to rotate the knife carrier 2 relative to the housing, whereas when the housing 1 is rotated within the knife carrier 2, a rotation of approximately 270 ° is required. For better handling of the film dispenser and also for protection against rolling away, the housing, as shown in FIGS. 10 and 11, can be provided with an edge 19, 20 which protrudes beyond the knife carrier 2. The possible wall or table holders of the film dispensers are also designed in accordance with these possibilities. FIG. 30 shows a version of a wall holder 85, 81, in which the housing is fixed over the holder and the knife carrier 2 can be rotated back and forth like a visor. In the

FIGS. 34 and 35 show an embodiment in which the knife carrier 2 is fixed relative to the wall bracket 82 and the housing 1 can be rotated relative to the knife carrier 2. These wall brackets 80, 81, 82 are designed so that the film dispenser can be easily removed from the bracket, but also remains functional on the wall. A

Another version of the wall fastening, which also applies to other embodiments of the film dispenser, is the embodiment according to FIGS. 36 or 37, which is provided with a type of hook or bracket in order to hang it on a rod or a hook.

The housing 11 has a knife carrier 12 which spans it in a range of approximately 100 ° and which is hinged in the region of the removal slot 15 via a joint 83 to the housing 11 such that the knife carrier 12 is approximately 45 ° from the housing 11 can be folded away. In the folded state, the film web 31 runs through the removal slot 15 between the housing 11 and the knife carrier 12. The gap space 13 between the housing 11 and the knife carrier 12 can be very narrow in this version or can be omitted completely, since there is no relative movement between the housing 11 and Knife holder 12 takes place and the film is placed on the housing or on the inside of the knife holder 12 for the function of the film dispenser from Can be an advantage. The knife carrier 12 has two latching cams 17 on its front edge, which engage in catches 18 of the housing and prevent the knife carrier 12 from unintentionally opening.

This dispenser version can also be used in wall or table brackets, although only one version with a fixed housing 11 appears to be useful.

An embodiment of the object of the invention shown in FIGS. 3 and 4 likewise has a cylindrical housing 21 and in each case a removal slot 25 and a knife groove 6, but the

Knife carrier 22 is pivotally mounted on the end faces of the housing 21. As in the previous embodiment, the knife carrier 22 extends over approximately 100 ° and in the removal position releases the area between the removal slot 25 and the knife groove, with its rear edge finding an end stop in the notch 9. In order to cut to length from the film roll 30 in the film web 31, the knife carrier 22 is pivoted over the area between the removal slot 25 and knife groove 6 until it meets a stop cam 10 with its front edge and the film web is held between the housing 21 and knife carrier 22 . The gap 23 covering the foil lug 4 also protects the foil lug from further external influences after the foil dispenser has been cut to length.

The separating device 33 of the knife carriers 2, 12, 22 of the different embodiments of the film dispenser basically consist of a guide 60-63 for the cutting carriage 64-67, in which a cutting device cooperating with the housing 1, 11, 21 is accommodated. The cutting device can be equipped for cutting the different types of foils either with knife types that are partly matched to them or, according to the invention, with a universal separating device. FIGS. 20 and 21 show a cutting device for cutting transparent films from a fixed knife 70 which extends into the knife grooves 16 of the housing 1, 11, 21 and is held in the cutting carriage 67. FIGS. 14, 16 also show a knife only for cutting transparent ¬ film provided cutting device, which also has a fixed knife 70, which is held in the guide carriage 65, which can be moved on the guide 61 along the knife groove 16, the carriage 65 is also equipped with a holding roller 71, which extends in the pulling direction the film is arranged behind the knife 70 and, in addition to or slightly protruding from the edge of the groove, rolls on the housing 1, 11, 21. FIG. 15 shows a cutting tool which is interchangeable for the arrangement of knife and holding roller in FIG. 14, which consists of a cylindrical roller which has a bevel gear-shaped shoulder which, in the installed state, extends into the knife groove 16 extends into, this cutting device is used when cutting aluminum or paper foil. Another cutting device for separating aluminum and

Paper foils are shown in FIGS. 17-19, the cutting wheel consisting of two bevel gears 72, 73, which are assembled with their larger diameters opposite one another, and parts of the cone surfaces roll on chamfers 74 of the knife groove. The carriage 66 is again displaceably held by a corresponding guide 72 on the knife carrier 2, 12, 22. FIG. 18 shows a very small variant of this cutting wheel, the conical surfaces of which are structured, which interact with also structured bevels of the knife groove 16 and thus ensure that the cutting wheel rolls off.

FIGS. 22 and 23 show an additional possibility for cutting a film web to length, with which the front edge 75 of the knife carrier 2, 12, 22 can be equipped. In this case, sharp teeth 76 are introduced on several sides, in any case a tooth flank 77 of a tooth 76 is shaped such that it abuts the housing 1, 11, 21 or the film. The film is held between the housing 1, 11, 21 and the knife carrier 2, 12, 22 during the tearing off and at the same time a risk of injury by the teeth 76 is minimized.

An additional embodiment of the tear-off edge 75 of the knife carrier 2, 1 22 is shown in FIGS. 24 and 25, in which the teeth 76 extend radially to the housing 1, 11, 21 of the film dispenser, the latter being in a disconnected position on a rubber strand 79 inserted into a housing groove 78 support.

FIGS. 38-83 show further embodiments of the subject matter of the invention in various variations.

FIGS. 38-45 and 72-83 are a hinged dispenser, which essentially consists of two components, a bowl-shaped upper part 101a, 110a, 120a, 180a and a similar bowl-shaped lower part 101b, 110b, 120b , 180b, both parts being connected to one another by a hinge 109.

The knife carrier 102, 112, 122, 182 here consists of a shell in the form of a cylindrical cutout of approximately 90 °, which has an inner radius which approximately corresponds to the outer radius of the housing and the disks 105 arranged perpendicularly at its ends, 115, 125, 185 has, which, in the end openings of the housing 101, 110, 120, 180, pivotally support the knife carrier 102, 112, 122, 182. The pivoting angle of the knife holder can be set up as desired using recesses, cams, etc. To at such a panning

To guarantee the free running of the separating device, the housing 101, 110, 120, 140 140, 180 is provided in the areas of the two end stops of the separating device 108 in accordance with the pivoting angle, a radial groove 106, 116, 126, 146, 186. In the shell-shaped upper part 101a, 110a, 180a in the area of

End faces annular discs 105, 135m 185 attached. Hollow cylinders 115 are provided on the end faces in the shell-shaped lower part 101b, 110b, 180b. After inserting a film roll and closing the housing parts, the washers of the upper part rest on the inner end faces of the hollow cylinders. The disks of the knife carrier, those of the upper part and the hollow cylinder 115 have a bore into which a stopper 114 can be inserted axially into the film roll. The plug 114 thus fulfills the role of the roller bearing on the one hand and on the other hand ensures the secure closure of the housing.

In FIG. 42, as also in FIG. 58, the alternately smooth surface sections 150, 151 and the matt surface sections 152, 153, 154 are shown. The differently designed surfaces serve the function and handling of the film dispenser. On the smooth one

For example, transparent film adheres to surfaces much better than on matt surfaces, which can be used as needed. The inside of the housing and the components moving across the gap 103, 113, 123, 133, 143 are accordingly provided with matt, non-stick surfaces.

FIGS. 42-49 show a basically identical film dispenser, the housing parts of which are only partly cylindrical and partly rectangular.

A dispenser variant is presented in FIGS. 50-53, in the shell-shaped upper part 120a of which a drip-like disc 119 is provided in the area of the end faces, which interacts with a tumbler spring 121 provided in the shell-shaped lower part 120b when the catch is in the closed state 124 part of the Disc edge of the disc 119 engages behind. The tumbler spring 121 additionally has an unlocking tab 128 which extends through a lateral housing opening 123 and can be operated from the outside to open the housing.

FIGS. 50-53 and also FIGS. 56-61 show a variation of the film roll mounting. The disk 119 is partially designed as a spring tab 130. On the inward-facing side of the spring clip 130 there is an approximately cuboid block 131 which, with a rounded end face 134, enters an inserted film roll and which faces inward with one end facing away from this

Axially presses the surface against the edge of the film roll and thus clamps it. The angular position of the block 131 relative to the removal slot 135 allows the rolling resistance of the film to be predetermined.

Furthermore, FIGS. 56-59 show a film dispenser variant, the housing of which consists of two partial cylinders, of which the outer 140a partially encloses the inner 140b and both can be rotated relative to one another in such a way that a lateral longitudinal opening 149 for inserting a film roll can be produced is. The separating device 108 is here mounted directly on the outer housing part, so that an extra knife holder can be dispensed with.

This is also the case with the variant which is shown in FIGS. 62-65. In this case, the knife carrier 132 is molded directly onto the upper housing part 130a and the separating device 108 is held displaceably between a section of the housing surface and a guide 130 of the knife carrier. The axis of rotation 138 of the cutting wheels of the separating device 108 runs approximately radially to the central axis 139 of the housing or approximately parallel to the vertical or horizontal division plane 155, 156 of the housing. A conceivable lateral closure of the dispenser housing is shown on the left in FIG. 62, which can be achieved by the deformation of an elastic ring. Finally, FIGS. 66-69 show a variation of the separating device in which a frustoconical friction wheel 148, 158 is provided on the axis of rotation 138 of the cutting wheels, this being arranged such that it lies behind the knives in the pull-out direction of the film and with it larger diameter is also installed in the pull-out direction, this larger diameter being greater than the distance between the axis of rotation 138 and the housing surface, so that the conical friction wheel must deform in order to be able to roll on the housing surface. The film to be cut is advantageously held down and stretched before the separating device is used.

FIGS. 70 and 71 show, as a further variant, a hinged housing 160, the lower part 160b of which has an axial guide 163 in the area in front of the removal slot 164, on which a bowl-shaped knife carrier, which extends at least over the width of a film web with a at the edge provided separation device 108 can be guided along a film web.

FIGS. 72-83 show an optimized variation of the aforementioned film dispenser with separating device in the assembled state, as in individual parts, in several views.

FIGS. 66-69 and 84, 85, 88, 89, 90 show the separating device which can be used universally for all types of film which consists of a cutting carriage 64 with a knife 70 and at least one rotatable cutting wheel, in particular a bevel gear-shaped cutting wheel 72, which with its large end face directly adjacent and facing the knife 70 is arranged so that different separating mechanisms can be generated during the separating process according to the type of film. In the cutting pour 64 also two oppositely arranged rotating cutting wheels 72, 73 can be arranged on both sides of the knife 70, the two large end faces of the bevel gears facing the knife 70 and the body edge of a cutting wheel 73, which is formed by the large end face and the conical surface, rounded , whereas the corresponding body edge of the other cutting wheel 72 is sharp-edged. The knife edge of the separating device is V-shaped and sharp on both sides, its tip 93 extends beyond the diameter of the cutting wheel 72 into the knife groove 6, the cutting edges in the region of chamfers 74 of the knife groove 6 behind the contour of the cutting wheel 72 and the cutting wheels 72, 73 withdraw. The cutting wheels 72, 73 can be designed on their contact surfaces with the knife groove 6 as well as the active surfaces of the knife groove 6, the chamfers 74 such that a cutting wheel 72, 73 rolls frictionally and / or positively on the active surfaces, whereby outer part of the conical surface can still extend into the knife groove. In the cutting carriage 64, as shown in FIG. 67 or also in FIG

FIG. 90 shows that a friction wheel can be integrated, which is either frustoconical in cross-section and is arranged in the pull-out direction of the film behind the knife 70 or the cutting wheel 72, in particular also on its shaft 92, a larger diameter pointing in the pull-out direction and this Diameter is greater than the distance between the

Friction wheel axis of rotation and the housing surface or which is set obliquely to the surface of the film dispenser so that the film is additionally clamped in the cutting area during the cutting process.

FIGS. 84, 85 and 88, 89 clearly show how the cutting carriage 64 is displaceably arranged on the knife carrier 2, namely in the guide 60, which is gripped by the lateral shoulders 90 of the cutting carriage 64. The cutting wheels 72, 73 are pressed into the knife groove 6 by elastic forces of the knife carrier 2, but also by the actuating forces. A film web 31 is between the removal slot 5 between The housing 1 and the knife carrier 2 are passed through and held down by this and held during the cutting process by the bevel gears 72, 73 between them and the chamfers 74 of the knife groove 6. The separating mechanism in the case of thin transparent film is approximately that that a bevel gear 72 or both bevel gears 72, 73, by pressing the film into the knife groove, clamp it so that the knife 70 protruding in the lower region over the radius of the cutting wheel 72 Cut clear film. The cutting of aluminum or paper foils is carried out by a similar mechanism, only that the foil is already separated at the sharp edge of the cutting wheel 72 at the latest during tightening because of the lower stretchability of the foil material. Both separation mechanisms can be involved in the separation process alone or in any part. Because the optimal separation mechanism is used for each type of film inserted in the film dispenser, the separation device is extremely wear-free. The complete film dispenser with separating device is therefore extremely robust due to its simple structure and extremely handy and user-friendly due to its practical orientation.

Claims

1. Foil dispenser with separating device, in particular for household foils such as aluminum, paper, transparent films or the like, with a housing

(1, 11, 21, 101, 110, 120, 130, 140, 160, 180) from predominantly rigid housing parts for receiving a film roll (30) which has a removal slot (5, 15, 25) arranged parallel to its longitudinal axis for the Has film, as well as a knife holder (2, 12, 22, 102, 112, 122, 132, 142, 182) with eii a cutting slide (64, 65, .66, 67, 168, 188, 191, 192), the transverse for pulling out a film web (31) with a knife groove (6, 16, 26) provided in the housing so that it can be moved so that a short, accessible film flag (4) is available for grasping and pulling out another film piece once a film piece has been cut off , which can be used universally for any type of film as a handheld, wall or table device and in which after removal of a piece of film, the film flag (4) over the area of the removal slot (5, 15, 25) and the knife groove (6, 16, 26 ) in a gap (3, 13, 2 3, 103, 113, 123, 133, 143) is completely covered, the

Knife holder adapted to the contour of the housing and movable relative to it, in particular rotatable in one or both directions, pivotable or foldable via a hinge (83).

2. Foil dispenser with separating device according to claim 1, characterized gekenn¬ characterized in that knife carrier (2, 12, 22, 102, 112, 122, 132, 142, 182) and housing (1, 11, 21, 101, 110, 120, 130, 140, 160, 180) have detents (7; 17) which correspond to one another at least in the separation position or also in the removal position of the knife carrier (2, 12, 22, 102, 112, 122, 132, 142, 182).

3. Foil dispenser with separating device according to one or both of the aforementioned claims, characterized in that the knife carrier (2, 12, 22) at least in the region of the cutting carriage (64, 65, 66, 67) in different positions from the housing in the separating position (1, 11, 21) can be lifted off or that the housing (101, 110, 120, 130, 140, 160, 180) in the area of at least one end position of the cutting carriage (168, 188) in the direction of movement of the knife carrier (102, 112, 122 , 132, 142, 182) has a recess (106, 116, 126, 146, 186) which is slightly deeper than the cutting edges (165) of the separating device.

4. Foil dispenser with separating device according to one or more of the preceding claims, characterized in that the knife carrier (2, 12, 22, 102, 112, 122, 132, 142, 182) for separating a film web in addition to the separating device, a correspondingly shaped Tear-off edge (75, 175, 176), in particular with teeth (76) arranged tangentially in the pull-out direction of the film or perpendicular to it.

5. A film dispenser with separating device according to one or more of the preceding claims, characterized in that it can be easily removed with its housing (1) or on its knife carrier (2) in a table or wall holder (80, 81, 82) and therein is functional.

6. A film dispenser with separating device according to one or more of the preceding claims, characterized in that a film roll (30) either laterally axially or radially through housing parts which can be opened via a hinge or through a longitudinal opening (49) which can be produced by rotating the housing parts against one another. can be inserted into the film dispenser.

7. A film dispenser with separating device according to one or more of the preceding claims, characterized in that the housing (101, 110, 120, 180) consists of two shells connected by a hinge (109), an upper part (101a, 110a, 120a, 180a) and a lower part (101b, 110b, 120b, 180b), which form a cylindrical housing, that the upper part has annular disks (107, 117, 187) in the region of its end faces and the bowl-shaped lower part on the end faces Hohl¬ Cylinder (115) has and after successful insertion of a film roll and folding the housing parts on both sides plug (114) axially through the hollow cylinder (115) and the washers (107, 117, 187) into the film roll, which closed the housing and keep the film centered.

8. Foil dispenser with separating device according to one or more of the preceding claims, characterized in that the bowl-shaped upper part (120a) in the region of the end faces each has a pot-like disc (119) open towards them and that the bowl-shaped lower part (120b ) has a locking spring (121) which is provided with a catch (124) and an unlocking tab (128) which passes through a lateral housing opening (129) and that in the closed state a part of the disc edge of the disc (119) has the catch ( 124) and that part of the disc (119) is designed as a spring tab (130), on the inside of which an approximately cuboid block (131) is attached, which engages with a rounded end face (134) in an inserted film roll and which with a axially presses away from this end face and faces inward against the edge of a film roll and clamps it.

9. A film dispenser with a separating device according to claim 1, characterized in that the knife carrier (132) is formed on the upper housing part (13a) and the separating device (108) between a section of the housing surface and a guide (137) of the knife carrier (132 ) is kept movable.

10. Foil dispenser with separating device according to claim 1, characterized gekenn¬ characterized in that the lower part (160b) in the area in front of the removal slot (164) has an axial guide (163) on which the dispenser-long knife carrier (162) with the separator arranged in the cutting direction - The device (108) can be guided transversely to the film web.

11. A film dispenser with separating device according to one or more of the preceding claims, characterized in that the outer sides of the housing are alternately provided with smooth surface sections (150, 151) and matt surface sections (152, 153, 154) and that the inside of the housing and the over Gaps (103, 113, 123, 133, 143, 173) components that are moved away are provided with matt, non-stick surfaces.

12. A film dispenser with separating device according to one or more of the preceding claims, characterized in that it can be used universally for all types of film and consists of a cutting carriage (64) with a knife (70) and at least one rotatable cutting wheel, in particular one there is a bevel gear-shaped cutting wheel (72) which, with its large end face, is located directly adjacent and facing the knife (70) in such a way that different separating mechanisms can be produced during the separating process in accordance with the type of film.

13. A film dispenser with separating device according to one or more of the pre-mentioned claims, characterized in that its cutting carriage (64) has two oppositely arranged rotating cutting wheels (72, 73) and an intermediate knife (70), the two large end faces of the Bevel gears face the knife (70) and the body edge of a cutting wheel (73), which is formed by the large end face and the conical surface, is rounded, whereas the corresponding body edge of the other cutting wheel (72) is sharp-edged.

14. Foil dispenser with separating device according to one or more of the preceding claims, characterized in that the knife edge of the separating device is V-shaped and sharp on both sides, its tip (93) beyond the diameter of the cutting wheel (72) into the knife groove ( 6) and the cutting edges in the area of bevels (74) of the knife groove (6) behind the contour, the cutting wheel (72) or the cutting wheels (72, 73) withdraw.

15. A film dispenser with a separating device according to one or more of the preceding claims, characterized in that a cutting wheel (72, 73) of the separating device on its contact surfaces with the knife groove (6) and or the active surfaces, the chamfers (74), the knife groove (6) are designed so that a part of the conical surface of a cutting wheel (72, 73) rolls frictionally and / or positively on the active surfaces and an outer part of the conical surface extends into the knife groove (6).

16. A film dispenser with a separating device according to one or more of the preceding claims, characterized in that a friction wheel is integrated in the cutting carriage (64), which is either frustoconical in cross section and in the pull-out direction of the film behind the knife (70) or the cutting wheel (72), in particular arranged on its shaft (92), its larger diameter pointing in the direction of extension and this Diameter is greater than the distance between the friction wheel axis of rotation and the housing surface or that is set at an angle to the surface of the film dispenser, so that the film can be additionally tensioned in the cutting area during the cutting process.