MXPA98006977A - A gearing provision to drive a reel core of an admission reel for the transfer tape of a transfer departant - Google Patents

Abstract

The present invention relates to a gear arrangement for driving the reel core of an intake spool for a transfer belt through the reel core of a feed spool disposed laterally of and radially offset from the take-up reel in the housing a transfer dispenser or a filler cassette for a transfer dispenser, comprising a first gear wheel designed to drive the intake spool, the pitch diameter of the second gear wheel being less than that of the first gear wheel, a friction clutch that is provided between the reel core of one of the two reels and the associated gear wheel and a radially projecting annular disc that is disposed in each reel core and its side oriented to the other reel, characterized in that the two reel cores rest partially against each other through their disks mutually opposed rings, in which, in addition, the first gear wheel is formed by internal teeth in the reel core of the feed spool inside which the second gear wheel is arranged, in which the intake spool is mounted for rotation in an integral spindle with the housing or cassette through a central annular sleeve and in which the annular sleeve is provided with a lateral extension carrying the second externally toothed gear wheel which meshes with the first gear wheel

Description

A GEAR DISPOSAL FOR DRIVING A REEL CORE OF AN ADMISSION REEL FOR THE TRANSFER TAPE OF A TRANSFER DEPUTY This invention relates to a gear arrangement for driving the reel core of an intake spool for a transfer belt through the reel core of a disposed feed spool; laterally of and radially offset from the intake spool in the housing of a transfer spout, comprising a first gear wheel that is driven by the feed spool and meshed with a second gear wheel designed to drive the intake spool , the passage diameter of the second gear wheel being smaller than that of the first gear wheel, a friction clutch being provided between the urine reel core of the two reels and the associated gear wheel and a projecting annular disc arranged in each reel core and its side oriented to the other reel. Transfer jets are widely used in offices and homes. They are hand-held devices for transferring a film, for example an adhesive film, or a cover film, from a carrier tape to a substrate, the film-coated carrier tape being wound on a feed spool in the dispenser housing and being guided from the feeding reel to an applicator leg projecting from the housing. By means of the applicator leg, the film-coated carrier tape can be pressed onto a substrate, the film layer being separated from the carrier tape and transferred to the substrate in conjunction with the reverse portion of the tape on the applicator leg. The empty carrier tape is then inverted in the applicator leg and returned to an intake spool in the dispenser housing. The feeding reel and the intake spool "and also the applicator leg are often arranged together in a cassette.The feeding spool is rotated by removing the carrier tape from the feeding spool when the dispenser is in use, that is, during its movement on the substrate.The feed spool drives the intake spool through an appropriate intermediate gear and the friction clutch, the design of the gear having to take into consideration the fact that the carrier tape it must always be kept under a certain tension regardless of the unwinding diameter of the carrier tape on the feeding reel and the winding diameter of the carrier tape on the intake spool.In the known transfer dispensers, the intake spool and the spool can be arranged in tandem in the same plane even if this does not lead to relatively large spacer. Instead, however, the two reels can also be arranged side by side, both coaxial and axially deflected spool arrangements being known in a light manner. In this way, the dispenser housing can be made considerably shorter in its longitudinal direction than in the case of reels arranged in tandem in one plane, the housing having to be made slightly thicker only in the vicinity of the spool assembly as a result of the juxtaposition of the reels. This particular solution is adopted especially when the dispenser housing is intended to be in the form of an "elongated" housing in which part of the housing is relatively small in cross section and released for example in the form of an elongated cylinder or the like , which allows the housing to be held there like a relatively thick pencil or fountain pen. The largest and slightly - A - thicker housing is arranged at the end of this elongated part to accommodate the two reels, being located above the back of the user's hand when the dispenser is in use (similar to the cover of a fountain pen during writing), ie, in a position where there is no interference with convenient retention of the dispenser in the user's hand in the elongated, thinner part of the housing. A particular interest in the design of these "elongated" transfer jets is also to configure the larger part of the housing at the end of the elongated dispenser in such a way that its width (ie, the axially occupying space of the reels) is so great. small as possible so that the dispenser as an integer is small and handy. In a known transfer dispenser of the type mentioned at the beginning sold under the name "Tombo" where two reels are arranged in a filler cassette, the filler cassette has an intermediate wall section extending longitudinally on one side of the which the feed spool and the other side of which the inlet spool are mounted for rotation. The reel core of the feeding reel is arranged on a rotary assembly which, in turn, is mounted for rotation on an integral spindle with the cassette and which projects from the intermediate wall section thereof. The reel core of the feed spool is retained on the rotary assembly by friction so that a friction clutch operating by friction is formed between the two. The rotating assembly in turn is provided with a radially projecting annular disc projecting radially at the axial end of the reel core of the supply reel which is oriented to the intermediate wall section of the cassette so that it is prevented from The tape slides sideways out of its roller towards the intermediate wall section when the transfer dispenser is in use. Integrally formed with the rotary assembly between the annular disc and the intermediate wall section is a gear wheel that meshes with a second smaller gear wheel from which the central axis is deviated from the central axis of the rotary assembly longitudinally of the dispenser of transfer and which, in turn, comprises an integral lateral arrow section through which it is rotatably mounted in the intermediate wall section of the cassette. This side arrow section projects through the intermediate wall of the cassette to the other side thereof where the reel core of the intake spool is mounted for rotation therein. In addition, the radially projecting side discs are adjusted from the outside to the central spindles of the feed and intake spools at their free axial ends to prevent the carrier tape from sliding laterally out of its roller on its side, too, when the transfer dispatcher is in use. In view of the gear arrangement of the filling cassette of this known transfer dispenser, the space occupied transversely of the cassette, ie, axially of the reels, is comparatively large due not only to the widths of the reels having to be accommodated here. , but also space has to be made for the width of the outer cover disks of both reels, the thickness of the two annular discs, the thickness of the intermediate wall section and the thickness of the two gear wheels on the side of the feeding spool. Additionally, a comparatively large number of parts is involved in the construction of the described gear arrangement of this known transfer dispatcher. Against this background, the problem addressed by the present invention was to provide a gear arrangement of the type mentioned in the principle for juxtaposed reels which would be narrower than the known arrangement and which would have a simple construction involving even fewer parts. In accordance with the invention, the solution to this problem for a gear arrangement of the type mentioned at the beginning is characterized in that the two reel cores rest partially against each other through their mutually opposed annular disks; wherein, in addition, the first gear wheel is formed by internal teeth in the reel core of the feed spool inside which the second gear wheel is disposed; wherein the intake spool is mounted for rotation on an integral spindle with the housing or cassette through an annular sleeve and in which the annular sleeve is provided with a lateral shoulder carrying the second externally toothed gear wheel meshing with the first gear wheel. According to the invention, the space occupied by the width of the transfer dispenser or the filler cassette is distinctly smaller than in the known transfer dispenser because only the width of the two reels and their annular disks has to be covered. The two spools or reel cores, which are supported against each other through their annular discs (and in this way are axially supported to each other), are mounted on the spindle which is integral with the cassette or housing and which projects from a side wall of the housing or the filler cassette. The transfer dispenser does not occupy more space on its width (axially of the reels). Furthermore, the gear arrangement according to the invention has a remarkably small number of parts which have to be adjusted towards or over one another, namely two spool cores, which are provided (for example integrally) with annular disks that project radially; the friction clutch (which is formed in one piece with the side shoulder of its annular sleeve and the teeth of the second gear wheel) and, finally, the spindle - integral with the housing or the cassette - with the side wall section associated with the cassette or the accommodation. The distinctly reduced number of parts needed compared to the known arrangement simplifies the overall construction and greatly accelerates and simplifies the assembly as an integer. In view of the fact that, in accordance with the invention, the reel cores are partially supported against each other through their radially projecting annular disks, the two reel cores can be axially fixed relative to each other without any need to use one. intermediate wall so that, when a reel core is properly supported at its other axial end by a side wall of the housing or filler cassette, the free end of the central annular sleeve that is attached to the other reel only needs to be axially fixed on the spindle to fix the arrangement as a whole firmly in the housing or the cassette. Furthermore, using a gear wheel gear assembly, it is possible, according to the invention, through the presence of internal teeth, to arrange the two gear wheels in the plane of the feed spool (ie, in the inner space) surrounded by its reel core) so that no additional space is needed to accommodate the cog gear assembly. Another advantage of the invention is that the interengaging teeth are not subjected to any load in the force direction. In accordance with the invention, the intake spool, for example, can be made entirely in one piece with the central annular sleeve and its lateral arrow extension provided with teeth to form the second gear wheel. In this case, the friction clutch has to be properly arranged between the spool core of the feed spool and the internal teeth, for example using an appropriate friction fit between the spool core and a rotating assembly formed with the internal teeth. In a particularly preferred embodiment of the invention, however, the friction clutch is disposed between the reel core and the intake spool and the spindle surrounds the central annular sleeve. The friction clutch can assume any appropriate shape. In a particularly preferred embodiment, however, the friction clutch comprises several spring tabs that are radiated from the central annular sleeve that bear under deflection against, and support, the inner diameter of the reel core of the intake spool, that is, form an assembly Rotary for this reel core. In this way, an even longer life for the friction clutch can be achieved than in the case where the friction clutch consists solely of simply a friction fit of the spool core - in a corresponding rotating assembly, as for example in The known gearing arrangement, so that even the lightest signs of friction-induced wear immediately lead to significantly influence the friction moment and, therefore, to a change in the properties of the friction clutch. provided in any suitable form on the spool core of the feed spool In a particularly preferred embodiment, however, the internal teeth are formed integrally on the inner circumference of the spool core of the feed spool so that the teeth and the core reel consist of a single part that is preferably made of plastic co, for example by injection molding. In an advantageous embodiment of the invention, the outer diameters of the annular discs of both spool cores are the same. In this way, the space predetermined by the outer diameter of the feed roll reel - in turn regulated by the required tape length - can also be used completely on the intake side, the core of the intake spool being designed in such a way that the outer diameter of the entire used ribbon roll corresponds to that of the complete feed roll which advantageously provides a low roll height (number of layers of the ribbon roll used).

In another advantageous embodiment of the invention, the reel core of the feeding reel is axially supported on its remote axial end face of the annular disc by the side wall of the housing or a side wall of the filling cassette and, around its internal circumference , it is firmly supported in the housing or cassette by one or more support points that are / are offset from the point of engagement of the internal teeth with the second gear wheel. This is preferably achieved by an arrangement in which the reel core of the supply reel is radially supported from its axis of rotation at a point radially opposite to the point of engagement of its internal teeth with the second gear wheel by an element of support fixed to the side wall of the housing or the cassette, so that two support points are established oriented towards each other through approximately 180s, namely, first the support element itself and second the coupling point between the internal teeth and the second gear wheel. In this way, the reel core of the feed spool is also fixed radially as an integer. In a particularly preferred embodiment, the support element is in the form of an arcuate support element which is fixed to the side wall of the housing or the cassette and extends through a certain angle and which may assume the shape of a small Arched top projecting slightly from the side wall. This arcuate stop rests across the radially outer surface against a corresponding annular shoulder within the reel core of the feed spool and radially supports the spool core while fully maintaining its ability to move in the direction of rotation. Preferably, the arcuate support element radially supports the spool core of the feed spool through an angle of approximately 180s. Instead of a single full-length arched support element, however, several, for example two or three or even more, supporting elements can also be provided, their supporting surfaces being all arranged on a corresponding arc corresponding to the internal diameter of a corresponding annular shoulder on the feed spool. In another particularly preferred embodiment, the support element is integrally formed with a side wall of the housing or the cassette so that a one piece component is formed again. If desired, the arched support element, of course. it can also be made as a separate part and properly fixed to the side wall of the housing or the cassette, for example by means of an adhesive or the like. If the friction clutch of the gear arrangement according to the invention is provided with various spring arms radiating from the central annular sleeve, it is of particular advantage if, in addition to the spring arms, radial support flanges are also provided. to further support the inner diameter of the intake spool in such a manner that they join with the spring arms at their radially internal ends. The radial support flanges are provided at their free ends with support shoes which are each provided on their surface with a co-face side adapted in configuration to the inner surface of the reel core of the intake spool. In a particularly advantageous embodiment, the support shoes are provided on their axial width, that is, their width axially of the intake spool, with a taper sliding radially towards the second gear wheel to allow the friction clutch - in that the spring arms are formed integrally as a single part with the central annular sleeve and its lateral extension with the outer teeth, to be inserted particularly easily and quickly from the outside of the reel core of the intake spool to the inner diameter thereof. This is because a slight conicity is created in this way in the insertion direction which greatly simplifies the assembly. In another advantageous embodiment of the invention, stops are provided projecting radially beyond the support surface onto the support shoes at the axial ends thereof which remain on the side remote from the second gear wheel, the stops axially resting against the annular shoulder provided correspondingly on the inner circumference of the reel core of the intake spool and axially fixing this reel core and, therefore, the intake spool relative to the central annular sleeve. In another particularly preferred embodiment of the invention, the spindle is designed on at least part of its circumference such that it comprises an elastic tongue which terminates axially at the free axial end of the spindle and which can be formed, for example, by two slots. which are parallel to each other and to the central axis of the spindle and which extend axially at a certain distance towards the spindle from the free end thereof, this elastic tongue being provided at its free end with a radially projecting stop which, in the Assembled, it rests axially against the radial end face of the annular sleeve and fixes both reels for rotation relative to the side wall of the housing or the cassette. The invention provides a surprisingly simple and very compact gear arrangement which occupies very little space in the direction of the width of the housing or the filler cassette. Furthermore, the arrangement according to the invention consists of particularly few parts that can be assembled quickly and easily, are simple to make and thus allow the filling cassette or the transfer dispenser as an integer to be manufactured in a particularly economical manner, The invention is described, by way of example, in the following with reference to the accompanying drawings, wherein: Figure 1 is a side elevation of a filler cassette comprising a gear arrangement according to the invention loaded in a housing - shown only schematically - of a transfer dispenser. Figure 2 is a section on line II-II of Figure 1. Figure 3 is a section on an enlarged scale through part of the gear arrangement shown in Figure 1. Figure 4 is a section (on an amplified scale) through the assembly of the feed spool and the interengagement of the internal teeth with the gear wheel that drives the intake spool. Figure 1 is a side elevation of a filler cassette 1 loaded into a housing 2 - shown only in dashed lines - of a transfer dispenser. Figure 2 is a section on line II-II of. Figure 1. The filler cassette 1 has a support structure that includes a side wall 1 '. in the loaded position of the filler cassette 1, the side wall 1 'is immediately adjacent to a side wall of the housing 2. If the transfer dispenser is of the type that does not accept filler cassettes, the side wall 1' of the cassette 1 The filling shown in Figures 1 and 2 could be formed by the side wall of the housing 2. However, the following embodiments are related to the case illustrated in Figures 1 and 2, where a filler cassette is used even when the expert does not it will have difficulty in observing immediately that the constructive arrangements to be described in what follows could be equally well used in a transfer dispenser without filler cassettes. As can be seen from Figures 1 and 2, the filler cassette - comprises an intake spool formed by a reel core 3 on which a roll 4 of carrier tape 5 coated with film is wound. The carrier belt 5 runs from the supply roll 4 of the carrier reel to a guide element 6 in the shape of a spring arm against which the belt rests under its own tension and which has an equalizing effect in the case of variations in that tension and acts as a guiding element to ensure that the tape runs correctly towards the elongated section 2a - smaller in cross section - of the housing 2 of the transfer dispenser. As shown in Figures 1 and 2, this elongated section 2a of the housing is designed in such a way that it can be easily held by the user on the fingers so that the dispenser as an integer can be retained as a fountain pen or the like. This elongated section 2a of the housing continues into a wider section 2b where the reels and friction clutch are accommodated. even when the section 2b of the housing is only slightly wider than the section 2a (width B in Figure 2), Figure 1 shows that it is much wider (perpendicular to the central axis of the reel core 3). After entering the elongated section 2a of the housing, the carrier tape 5 coated with film is guided to an applicator leg 7 which is disposed at the lower end of the filling cassette, which projects outwardly from the elongated section 2a of the housing in the free end thereof, but of which the width is rotated through 90s to the plane of the carrier tape 5 at its entry point into the guide element 6. Consequently, the film-coated carrier tape 5 is also continuously turned through 90s between the guide element 6 and the pressure edge 8 of the applicator leg 7 so that its plane is parallel to the pressure edge 8 of the leg 7. Applicator The carrier tape 5 is guided by lateral projections 9 on the applicator leg 7.; it passes around the pressure edge 8 and then returns (see Figure 2) through the elongated section 2a of the housing 2 on the other side of the applicator leg 7 to a second point 10 of reverse and. at the same time, it is rotated again through 90a. Using the dispenser, the carrier tape coated with film is pressed to an appropriate substrate (eg paper or the like) by the pressure edge 8 of the applicator leg 7. The film (e.g., "an adhesive film or a cover film) is transferred from the carrier tape to the substrate while the carrier tape 5 released from the film is returned to the admission reel after inversion at the pressure edge 8. through the guide element 10. The intake spool consists of a reel core 11 towards which the carrier tape is wound in the form of a roll 12. Figures 1 and 2 show the phases in which the roll 4 of supply is still fully present in the intake spool, while there is still no supply of tape present in the reel core 11 of the intake spool (which, simply by information, is shown in chain lines in Figure 2 for the case of a full intake spool.) In Figure 1, the outer diameter of the spool core 3 of the feed spool is shown only as a string line to illustrate an association relative of the positions of reel cores 3 and 11. As can be seen from Figure 1, the center axes of the reel cores 3 and 11 are axially offset from one another (ie, longitudinally of the housing 2). It can also be seen from Figures 1 and 2 that, at their axial ends oriented to each other, the spool cores 3 and 11 are each provided with a flanged disc radially projecting. These flanged discs are formed by annular discs 13 and 14. The spool core 3 of the feed spool carries the annular or flanged disc 13 while the spool core 11 carries the annular or flanged disc 14, as best seen in Figure 3 which is a section on an amplified scale to through the gear arrangement shown in Figure 2. The annular disks 13 and 14 rest against each other on their mutually opposite sides so as to support each other in the axial direction. and 11 adjacent spools are slightly offset axially from one another, the radial annular disks 13 and 14 are not in contact with each other on their mutually opposed radially annular surfaces, but only each one covers the other partially in accordance with their relative radial position. , as is shown particularly clearly in Figure 3. However, the mutual surrounding contact surface is large enough to guarantee the support necessary axial. Projecting from, and integrally formed with, the side wall 1 'of the filler cassette 1 is a spindle 15 (Figure 3) on which the complete gear arrangement is mounted, as described in more detail below. The spool core 11 of the intake spool is mounted on the spindle 15 through a friction clutch globally denoted by the reference number 16. The friction clutch 16 comprises the radial support flanges 17 arranged in the shape of a star which are provided at their radial ends with support shoes 18, the spool core 11 of the intake spool being supported around its radial internal circumference by the outer peripheral surface of the support shoes 18. As shown by Figure 3 and, above all, Figure 3, the stops 20 are provided at the axial end of the support shoes 18, "projecting slightly beyond the outer peripheral surface thereof in the radial direction. The radially projecting internal surfaces of the stops 20 are axially supported against a corresponding annular shoulder 21 provided on the inner periphery of the reel core 11 of the intake spool and thus fixed on the spool core 11 relative to the spool core 11. 3 reel core (a - through the reel core 3 - relative to the side wall 1 'of the filler cassette 1.) As shown by the illustration in FIG.

Figure 1, to be specifically mentioned in this respect, the spring arms 19 project from the support flanges 17 and, at their radial ends, they have circular end flanges 22 with which they rest against the inner periphery of the core 11 of reel under a certain elastic deviation. The support flanges 17 with their support shoes 18 and the spring arms 19 with the end flanges 22 together form a rotational assembly on which the spool core 11 of the intake spool is radially supported and which, at the same time, It serves as a friction clutch. At their radially internal ends, the support flanges 17 are joined together by an annular section 23 which, in turn, is connected by the connecting ribs 24 to a central annular sleeve 25. as shown in particular in FIG. 3, the annular sleeve 25 has a lateral arrow extension 26 projecting towards the interior of the spool core 3 and which is provided externally with teeth 27, as shown particularly clearly in FIG. Figure 4 which is a section through the central plane IV-IV of the feeding reel (see figure 3). The spool core 3 of the feed spool in turn is provided in its internal diameter with internal teeth 28 and thus forms a first internally toothed gear wheel which ST meshes with the second gear wheel formed from the arrow extension 26 and the external teeth 27, as can be seen particularly clearly from Figure 4. The clutch d? friction consisting of the support flanges 17, the support shoes 18, the spring arms 19 with their end flanges 22, the connecting section 23, the connecting ribs 24, the annular sleeve 25 and its arrow extension 26 lateral with the external teeth 27 is made in a piece of plastic. The radial support surfaces of the support shoes 18 may be in the form of cylinder sections, as shown in Figures 2 and 3. Alternatively, they may be provided with a slight taper towards the side wall 1 'of the filler cassette 1 to facilitate the introduction during the assembly process. However, this taper should only be very light to ensure good radial external contact with the inner periphery of the reel core 11 of the intake spool in the assembled state. As can be seen from Figure 3, an axially extending spring-loaded tongue 29 is provided on the circumference of the spindle 15. It is formed by two axial indentations 30 in the spindle body 15 that non-ST extend fully through its axial length starting from the free end of the spindle 15. At its axial end, the tongue 29 d? The spring is provided with a radially projecting stop 31 which retains axially? the radial end face of the annular sleeve 25 and prevents it from sliding out of the spindle 15. At the axial end facing the side wall 1 'of the filler cassette 1, the reel core 3 of the feed spool is provided with a annular shoulder 32 projecting radially inwardly and through which it is supported on the one hand at the outer periphery, 'of the terminal section of the arrow extension 26 of the annular sleeve 25 in the angular region where the internal teeth 28 of the core 3 of the spool is interengaged with the external teeth 27 of the arrow extension 26. In addition, the flanged disk 13 is supported on its internal diameter by the external circumference 36 of a step on the arrow extension 26, as clearly shown in Figure 3 (right hand half). In this way, a support is created between the spool core 3 and the arrow extension 26 on both sides of the sides of the interengaging teeth of the external teeth 27 of the arrow extension 26 and the internal teeth 28 of the core 3. of reel of the feeding reel so that the almost ideal engagement between the gear rings and the external teeth 27 of the internal teeth 28 can be achieved. On the radially opposite side, the reel core 3 of the feed reel is supported by the radial inner surface of an annular shoulder 32 of an arcuate support element 33 projecting in one piece from the side wall 1 'of the filler cassette 1. The support element 33 extends peripherally through an angle slightly more than 180s and supports the cart core 3 radially relative to the spindle 15. Above all, the spool core is suitably supported for rotation by the element 33 d? support and the interacoplamy of the internal teeth 28 with the external teeth 27 of the extension 26 d? arrow which in turn is supported for rotation by the spindle 15 integral with the housing. The fact that, as shown in Figure 3, the spool core 3 of the feed spool and the friction clutch 16 are supported by each other (through the arrow extension 26 and the outer diameter of the connecting ribs 24). ) ensures that the two interengaging gear rings 27 and 28 are always in the ideal position relative to one another. The illustrated gear arrangement is attached as follows: First, the spool core 3 is axially adjusted to the support member 33 and, with the radial inner peripheral surface of its annular shoulder 32, pressed against the outer peripheral surface of the element 33 of support and in this way is aligned. The friction clutch 6 is then inserted axially into the radial interior of the reel core 11 of the intake spool until the stops 20 contact the associated annular shoulder 21 of the reel core 11. The arrow extension 26 of the central annular sleeve 25 is then pushed axially towards the spindle 15 until the external teeth 27 in the arrow extension 26 mesh with the internal teeth 28 in the reel core 3 of the intake spool and the stop 31 of radial retention of the spring tongue 29 axially fixed to the central annular sleeve 25. In this position, the two opposite side faces of the annular disks 13 and 14 also align with each other. This completes the assembly of the complete gear arrangement that can only occur from one direction. The gear arrangement has only a few parts that are normally made of appropriate plastic; the reel core 11 for the intake spool with the annular disk 14 integrally formed, the clutch 16 d? fully integral friction (with the support flanges 17, the support shoes 18, the spring arms 19, the central annular sleeve 25, the arrow extension 26 and the external teeth 27) and, as a third component, the core 3 of the reel of the admission reel with its annular shoulder 32 and its annular disk 13. As illustrated, these parts need only be fixed axially towards or over one another in a total of three axial adjustment steps. The "filler" cassette is further provided with a spring tab 34 equipped at its free end with a stop pin 35 (Figures 1 and 2) which, in turn, engages the teeth formed at the radially outer end of the disc 14 annular of the intake spool and that is designed to function as a non-return element that only a winding movement and not an unwinding movement is possible, The slightly offset arrangement of the spools one relative to the other provides in this way a particular space saving arrangement of an element of non-return In the embodiment illustrated, the outer diameter of the reel core of the intake spool is larger than the outer diameter of the reel core 3 of the supply reel. the practical application of the transfer dispenser, the carrier belt 5 is being unwound from the "supply roll, the reel core 3 is made to rotate. Its internal teeth 28 drive the external teeth 27 of the gear wheel 26. Since the pitch diameter of the external teeth 27 is automatically smaller than that of the internal teeth 28, a revolution of the spool core 3 during unwinding produces more than one revolution of the gear tooth 26 and, therefore, more a revolution of the central annular sleeve 25 and - through the clutch "16 d" friction of the spool core 11 - the intake spool This ensures that, even when the roll 4 of the feed spool is full, the winding distance in the spool number 11 is greater from the beginning than the length of the unwinding carrier tape 5 so that the carrier tape 5 is immediately placed under tension.When the tape tension required, i.e. Corresponding braking movement in the spool core 11 of the intake spool is achieved, the friction clutch 16 starts to slide in. However, this always ensures that, even when the roll 4 on the feeding reel is complete, the required tape tension is accumulated and loop-free winding to the intake spool is ensured. as the unwinding diameter of the roll 4 on the feed spool decreases and the diameter of the ribbon roll 12 on the spool d? Admission increases, the difference in speed between the two spool cores becomes more pronounced so that the friction clutch 16 has to accommodate a correspondingly greater slip.

Claims (15)

CLAIMS:

1. - An arrangement d? gear to drive the reel core of an inlet reel for a transfer belt - through the reel core d? a feed spool disposed laterally of and radially offset from the intake spool in the housing of a transfer dispenser or in a full-size cassette for a transfer dispenser, comprising a first gear wheel designed to drive the carriage Admission, the diameter of step d? the second gear wheel being smaller than that of the first wheel d? gear, a friction clutch that ST provides between the spool core of one of the two spools and the associated gear wheel and an annular disk that ST radially projects that is disposed in each spool core and its side oriented to the other spool, characterized in that the two reel cores ST partially support one another against each other through their mutually opposite annular disks; wherein, in addition, the first gear wheel is formed by internal teeth in the spool core of the feed spool inside which the second gear wheel is disposed; wherein the intake spool is mounted for rotation on an integral spindle with the housing or cassette through a central annular sleeve and in which the annular sleeve is provided with a lateral extension carrying the second wheel d? externally toothed gear that meshes with the first gear wheel.

2. A gear arrangement as described in claim 1, characterized in that the friction clutch is arranged between the reel core of the intake spool and the spindle and surrounds the central annular sleeve.

3. A gear arrangement as described in claim 2, characterized in that the internal teeth are formed integrally on the inner circumference of the reel core of the feed spool.

4.- An arrangement d? gear as described in any of claims 1 to 3, characterized in that the diameter of the reel core of the intake spool is at least as large as that of the reel core of the supply reel.

5. A gear arrangement as described in claim 4, characterized in that the outer diameters of the annular disks of the two spool cores are the same.

6. A gear arrangement as described in any of claims 2 to 5, characterized in that the friction clutch comprises several spring arms that radiate from the central annular sleeve and that lie under the deviation against the diameter inner core reel spool for inlet and reel core support.

7, - A gear arrangement as described in any of claims 1 to 6, characterized in that the reel core of the feed spool is supported axially on its remote axial end face of the annular disc by the housing or the cassette and , around its inner circumference, it is firmly supported in the housing or cassette by one or more support points, which is / are deviated from the point of engagement of the internal teeth with the second gear wheel.

8. A gear arrangement as described in claim 7, characterized in that the reel core of the feed spool is radially supported from its axis of rotation to a point radially opposite point d? coupling of its internal teeth with the second gear wheel by means of a support element fixed to the housing or the cassette.

9. - A gear arrangement as described in claim 8, characterized in that the support element is in the form of an arcuate support element that is fixed to the housing or the cassette and extends through a certain angle.

10. A gear arrangement as described in claim 9, characterized in that the arcuate support element radially supports the feed core through an angle of approximately 1802.

11. A gear arrangement as described in any of claims 8 to 10, characterized in that the support element it is integrally formed with a side wall of the housing or the cassette.

12. A gear arrangement as ST describes in any of claims 6 to 11, characterized in that, in addition to the arms d? spring, the friction clutch also comprises support flanges? radial to support the inner diameter of the reel d? admission with which the spring arms are joined at their radially inner ends.

13. A gear arrangement as described in claim 12, characterized in that the radial support flanges are provided at their free ends with support shoes that are provided on its surface with a bearing face adapted to the inner face of the bearing. reel core of the intake spool.

14. A gear arrangement as described in claim 13, characterized in that stops are provided that project radially beyond d? the support shoes on the support shoes on the axial ends thereof that remain on the sides remote from the second gear wheel, the stops resting axially against an annular shoulder provided correspondingly on the internal circumference of the core d? reel reel d? admission.

15. A gear arrangement as described in claim 14, characterized in that the clutch d? friction, its lateral extension and the second gear wheel are made in a piece of plastic. 16.- An arrangement d? gear as described in any of the preceding claims, characterized in that the integral spindle with the housing or cassette is designed on at least part of its circumference as a tongue extending axially to the free axial end of the spindle and ? ST provides at its free end with a radially projecting stop which, in the assembled state, ST axially supports against the radial end face of the annular sleeve and fixes both reels for rotation relative to the housing or the cassette. SUMMARY OF THE INVENTION In an arrangement for the core (1) of a winding reel for a transfer strip (5) through the core (3) of a supply reel on the radially stepped side of the winding reel in the housing (2). ) of a transfer dispenser or an interchangeable cassette (1) therefor, with a first gear wheel (28) driven by the supply spool which engages a second gear wheel (26, 27) that drives the spool (11). ) of winding, wherein the partial diameter of the second gear wheel (27) is smaller than that of the first (28) and a friction clutch (16) is fitted between the core (11) of one of the two reels and the relevant toothed wheel (27) and there is an annular disc (13; 14) between each reel core (3, 11) and its side facing the other reel, the annular discs (13, 14) of the two cores ( 3, 11) of the reel are partially supported by each other. furthermore, the first toothed wheel (28) has the configuration of an internal gear (28) linked to the core (3) of the supply spool, inside which remains the second gear wheel (27), wherein the winding spool can rotate with a central annular sleeve (25) in an integral support spindle (15) with the housing or cassette. The annular sleeve (25) has an annular fastener (26) that rests on the external teeth of the second gear meshing with the first (28).