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
  • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
  • B65H37/002—Web delivery apparatus, the web serving as support for articles, material or another web
  • B65H37/005—Hand-held apparatus
  • B65H37/007—Applicators for applying coatings, e.g. correction, colour or adhesive coatings

Definitions

• the invention relates to an application foot for a device for transferring a film, in particular a correction film, from a carrier tape onto a substrate, preferably onto paper or the like, in which the carrier tape can be moved over the application foot that can be placed on the substrate.
• the invention relates to a device for transferring a film, in particular a correction film, from a carrier tape onto a substrate and a refill unit for such a device.
• Such a generic application foot and a generic device together with a refill unit are known from EP-B 0 313 719.
• the known device is particularly suitable for the transmission of a correction masking film to z. B. to cover the characters of a typewriter or a printer on paper for correction purposes.
• a carrier tape coated with a correction film runs over an application foot, the carrier tape being pulled off a dispenser spool and wound up by a winding spool.
• a gear with a slip clutch is preferably arranged, which ensures that the carrier tape always lies closely against the application foot.
• the application foot When using the device, the application foot is pressed onto the substrate with the tight-fitting carrier tape coated with the correction layer and pulled over the substrate, the correction layer being transferred to the substrate and adhering there.
• the correction layer tears off in such a way that it is on the carrier tape remaining correction layer end is at a defined beginning, ie as close as possible to an application edge of the application foot. This ensures that the correction film can be transferred to the substrate in a targeted and precise manner the next time it is used.
• the correction layer does not separate directly in the area of the application edge of the application foot, but further back.
• the correction layer is then not located directly on the application edge of the application foot.
• the invention is based on the object of avoiding or at least minimizing impure separation or undefined separation of the film to be transferred from the carrier tape.
• the application foot comprises an application edge which extends essentially transversely to the direction of movement of the carrier tape and that a tear-off aid for the film to be transferred is provided at a distance from the application edge against the direction of movement of the carrier tape.
• the non-transferred and non-transferable film is nevertheless torn off or cut off in the vicinity of the application edge by providing a corresponding tear-off aid according to the invention.
• the tearing aid limits the possible area of flap without then causing additional tearing. This means that the stated distance between the application edge and the tear-off aid is ultimately as small as should be selected without affecting the function and handling of the device or the application foot.
• the undisturbed running of the carrier tape over the application edge must not be disturbed.
• the tear-off aid essentially has a (defined) tear-off edge.
• This tear-off edge preferably extends parallel to the application edge.
• the distance between the application edge and the tear-off edge should, if possible, be only a few millimeters, preferably in a range of about 1-10 mm.
• the application edge does not necessarily have to be very sharp in order to avoid damage to the substrate, but the application edge should only be defined sufficiently precisely in the direction of the movement of the carrier tape in order to be able to place it as precisely as possible To ensure application edge on the substrate, but this does not rule out that the application edge is rounded or in some other way has a certain self-expansion.
• the application edge does not have to be the end edge of a tongue, but it could also be a protruding rib of an extended foot, e.g. of a cylindrical foot, or just around the ultimately well defined contact line of an extended foot e.g. act of a cylindrical foot.
• the tear-off aid is designed as a bracket which overlaps the carrier tape carrying the film. Due to its overlap, this bracket in particular limits the possible tapping area of the film to be retained on the carrier tape and, at the latest in the area of its own position, tears this film when the already transferred end section of this film adheres to the substrate and the device is lifted off the substrate, thereby causing the film is subjected to a tensile force that also acts in the direction of the bracket, or at least acts as a restraining bracket if the film is already torn.
• the tear-off aid has an interruption for threading the carrier tape.
• the carrier tape does not have to be threaded through one of its ends under the bracket, but the ends of the carrier tape can already be fixed, for example on spools, and the carrier tape can be threaded through a slight torsion by interrupting the bracket during assembly.
• the interruption is preferably arranged approximately in the center of the tear-off aid and it is preferably designed as a gap which extends approximately in the direction of movement of the carrier tape. It would of course also be deliberately conceivable, for example, to avoid an independent threading of the carrier tape through the gap.
• the application foot has a guide and / or contact surface that can be turned towards the substrate and that the guide cheeks to be directed from the guide and / or contact surface towards the substrate preferably protrude, which are part of the tear-off aid or on which the tear-off aid is arranged is.
• the carrier tape is guided in a type of tub, particularly in the vicinity of the application edge.
• a tear-off web which connects the free edges of the tub to one another, can therefore be arranged on the guide cheeks as part of the tear-off aid.
• the tear-off web stubs are preferably essentially angular in order to promote a tear-off, and according to a further development of the However, the invention has at its respective free end in each case at a corner region a corner which is defused or broken by a chamfer. This defused corner allows the carrier tape to be threaded through without damage.
• these chamfers can also serve as angled guide surfaces to facilitate threading or threading.
• the chamfer is preferably arranged on the outer rear edge of the respective tear-off web stub, which can be turned towards the substrate and faces the direction of movement of the carrier tape.
• a further development of the invention provides that the guide cheeks widen in their course from their end facing the application edge to their end facing away from the application edge and correspondingly protrude further from the guide and / or contact surface.
• the guide cheeks can preferably be essentially triangular (fin-shaped).
• the guide cheeks are particularly pronounced where they have to lead the carrier tape into or out of the area of the application foot or in or from the further vicinity of the application edge, while they are possibly not very pronounced in the area of the application edge to ensure the exact placement of the Do not hinder application edge on the substrate.
• the application foot is preferably designed as a replaceable part and, for this purpose, preferably has a bearing head which can be inserted in a form-fitting manner in a corresponding receptacle of a device for transferring a film.
• the application foot is also characterized in that the area surrounding the application edge is arranged on a largely tongue-shaped intermediate piece.
• the job foot can thus be trained to save material.
• the tongue-shaped intermediate piece is advantageously elastically deformable in the manner of a leaf spring, so that the application foot exerts pressure on the Substrate can be placed and used, but due to the elasticity a certain pressure limitation or softening can take place.
• the elasticity or deformability can of course be limited at a stop. This stop could be a housing edge or the like at the latest.
• the flexibility of the application foot thus leads to a kind of pendulum movement of the application edge.
• a resilience or elasticity or deformability could of course also be provided by spring elements other than a leaf spring.
• the tongue-shaped intermediate piece can additionally be fitted in at least one section to taper it.
• a further development of the invention provides that guide cheeks and guide surfaces can be provided in particular on both sides of the application edge, that is to say on the side on which the carrier tape arrives and on the side on which the carrier tape moves away from the application edge.
• a spacer can be provided according to a development of the invention, via which the carrier tape runs in the direction of movement of the carrier tape as seen from the application edge.
• a favorable angle can be formed, on the one hand, between the run of the carrier tape that runs towards the application edge and that run away from the application edge.
• this can also give the carrier tape an additional tension so that it lies closely against the application edge. This can happen in particular if the spacer has an arc, as is preferably provided.
• the spacer preferably has a thickened and / or rounded guide edge or a guide bead at the free end of its arc for guiding the carrier tape in particular without damage.
• the application edge can also be rounded.
• the application edge could also be a rib-like elevation.
• the application edge or the area immediately adjacent to it can additionally have at least one elevation which can be placed on the substrate in order to generate an increased pressing pressure. These can be, for example, knobs or, for example, ribs running in the direction of movement of the carrier tape.
• these surveys should not be so distinctive that they leave traces on the film to be transmitted.
• the application foot is preferably made entirely or partially of plastic, preferably as an integral plastic injection molded part.
• the device preferably comprises a take-up spool and an unwinding spool for the carrier tape, the carrier tape being movable from the unwinding spool in its direction of movement over the application edge to the take-up spool.
• the take-up reel and the take-up reel are preferably coupled to one another by means of a coupling which comprises a coupling member which maintains the tension of the carrier tape over the application edge, this coupling member preferably being a slip clutch member.
• a coupling which comprises a coupling member which maintains the tension of the carrier tape over the application edge, this coupling member preferably being a slip clutch member.
• at least the part of the application foot that has the application edge protrudes freely accessible from a housing of the device.
• This housing can preferably be formed essentially from two half-shells to be separated from one another or to be folded. Even the device as such can preferably entirely or partially made of plastic, preferably made of injection molded parts.
• the device comprises a refill unit which is exchangeable and which in turn comprises at least the application foot, the take-up spool, the take-off spool and the coupling.
• the corresponding carrier tape with the film to be transferred can already be pre-assembled and guided over the application edge.
• FIG. 1 shows a side view of a generic device known per se
• FIG. 2 shows a perspective bottom view of an application foot according to the invention
• FIG. 3 shows the front view of the application foot according to FIG. 2,
• Figure 4 is a side view of the application foot according to Figures 2 and 3 and
• FIGS. 5 shows a further side view of the application foot according to FIGS. 2 and 3.
• FIG. 1 shows a side view of an apparatus for transferring a film, in particular a correction film, from a carrier tape to a substrate.
• This device comprises a housing 2 which can essentially consist of two half-shells and can thereby be opened.
• the half-shells can be made of transparent plastic, for example.
• a frame 2a is inserted or inserted into the housing 2, which can also be provided as a replaceable refill cassette.
• a projecting foot 1 according to the invention protrudes from this frame 2a, which also protrudes from the housing 2 when the frame 2a is inserted into the housing 2.
• roller devices are known in principle, for example from WO 02/083535.
• a correction roller for applying a correction agent film to a substrate
• the problems described at the outset can occur.
• the application foot 1 is improved in accordance with the invention, but this cannot be seen from the side view of FIG. 1.
• FIG. 1 is therefore intended to serve as a basic illustration in particular for orientation in explaining the invention.
• An unwinding spool 5 and a winding spool 4 for a carrier tape 3 are inserted into the frame 2a and are coupled to one another in terms of drive.
• the carrier tape is guided around on the outside of the application foot 1 on its way from the supply reel 5 to the take-up reel 4.
• the carrier tape 3 still carries the agent to be applied as a film to a substrate, while the strand of the carrier tape 3 returning from the application foot 1 to the take-up reel 4 no longer carries this agent, since this has already been released onto a substrate is.
• FIG. 2 shows a perspective bottom view of the application foot 1 according to the invention.
• the same components are identified by the same reference numbers as in FIG. 1.
• FIG. 2 shows in particular the design of the application foot 1 according to the invention, as well as the course of the carrier tape 3 around this application foot 1.
• the carrier tape 3 is in particular guided tightly over an application edge 6 of the application foot 1.
• This tightness is achieved by the drive coupling of the supply reel 5 and the take-up reel 4, in particular by means of a transmission ratio of a transmission, which cannot be explained in detail here, which in particular can also include a slip clutch.
• the application foot according to the invention can preferably be made as an injection molded part made of plastic. It comprises an intermediate piece 7 which connects the part of the application foot 1 which carries the application edge 6 to a bearing head 9 which can be positively inserted into a corresponding receptacle of the frame 2a.
• the intermediate piece 7 can be designed to be elastically resilient like a leaf spring, which can be further favored by a waisted taper 8.
• this is namely to apply the agent from the carrier tape 3 to a sheet of paper lying, for example, just on a table top, with the application foot 1 placed obliquely down on this sheet of paper and with a certain pressure on the Pressed paper and then pulled as far over the paper while maintaining this pressure, according to the length of a film section to be applied to the paper.
• the device is then raised again so that the film section applied to the paper tears off as precisely as possible along the application edge 6 because it sticks to the paper, while the agent remaining on the carrier tape 3 adheres there and is therefore also lifted off when the device is lifted.
• the resilient flexibility of the intermediate piece 7 is favorable for pressing the application foot onto the paper or onto a substrate, in particular in order, for example, to avoid damage to the application foot 1 or to prevent the application edge 6 from tilting.
• the contact pressure is moderated or, as it were, controlled or more controllable.
• the lower run of the carrier tape 3 leading to the application edge 6 in FIG. 2 still bears the agent that can be applied to a substrate, ideally with a sharp tear-off edge directly parallel to the application edge 6.
• the upper run of the application belt 6 leading away from this Carrier tape 3, on the other hand, should be medium-free.
• the carrier tape 3 is guided around the application edge 6, an upper spacer 10, upper, lateral guide cheeks 11 and lower lateral guide cheeks 12 being essentially involved.
• tear-off web stubs 13 are arranged on the lower guide cheeks, which protrude toward one another. These tear-off bar stubs 13 form a type of bridge on the underside over the lower run of the carrier tape 3 leading to the application edge 6.
• the tear-off bar stubs could in principle also be designed as a continuous tear-off bar and connected to one another. Then the carrier tape 3 would have to be threaded through an eyelet under this bridge during its assembly.
• the carrier tape 3 In the formation of tear-off bar stubs, as shown in FIG. 2, it is instead possible for the carrier tape 3 to be threaded between the ends of the tear-off bar stubs 13. This threading is promoted by chamfers 14 in the region of the ends of the tear-off stub ends 13.
• the tear-off web stubs 13 together, if necessary, form a tear-off edge for a film to be applied to a substrate.
• the film section applied to the substrate should separate cleanly along the application edge 6 from the film still adhering to the carrier tape 3.
• the film can be detached from the carrier tape 3 on the lower run of the carrier tape.
• This area of the so-called flap is then according to the distance between the application edge 6 and the tear-off bar stub 13, because at the latest at these tear-off bar stubs the flattened part of the film would tear off and fall onto the substrate.
• This distance between the application edge 6 and the tear-off web stubs 13, which would have to be rewound in this way, should preferably be only a few millimeters, for example of the order of magnitude of one centimeter.
• the tear-off bar stubs 13 must not be placed too close to the application edge 6, so that they do not interfere with the exact placement of the application edge 6 on the substrate, since they themselves hit the substrate.
• FIG. 3 shows a front view of the application foot according to the invention according to FIG. 2.
• the same reference numbers are again, as in the subsequent figures, designated by the same reference numbers as in FIGS. 1 and 2.
• FIGS. 4 and 5 show the two side views of the application foot 1 according to FIGS. 2 and 3.
• the bend of the spacer 10 simultaneously encloses or forms a receiving sleeve 16 for a centering pin, which can be arranged on at least one of the housing shells of the housing 2 and when the frame 2a is inserted into the housing 2 for an exact orientation and positioning of the application foot 1 in the area of the housing or out of this, ensures.

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• Adhesive Tape Dispensing Devices (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

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ID=34960410

Family Applications (1)

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Cited By (1)

Families Citing this family (5)

Citations (3)

• 2004
  • 2004-05-28 DE DE200410026720 patent/DE102004026720A1/de not_active Withdrawn
• 2005
  • 2005-02-16 WO PCT/EP2005/001542 patent/WO2005118447A1/de not_active Application Discontinuation
  • 2005-02-16 EP EP05707419A patent/EP1753684B1/de not_active Not-in-force
  • 2005-02-16 ES ES05707419T patent/ES2394212T3/es active Active

Patent Citations (3)

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