EP0956255B1 - Manual device for transferring a film from a carrier tape to a substrate - Google Patents

Description

The invention relates to a handheld device for transferring a film from a Carrier tape on a substrate according to the preamble of claim 1.

Handheld devices of the type mentioned are preferred in the office area Apply a colored, opaque or adhesive film from a carrier tape a substrate such as paper is used. With such handheld devices a very clean and locally placed application of the film by the user to reach.

DE 36 44 946 C2 describes a hand-held device for applying an adhesive film a substrate known. The handheld device consists of a housing in which a Supply spool for a carrier tape coated with an adhesive film, one Take-up spool for receiving the carrier tape separated from the adhesive film, a band guiding device and a deflectable, elastically reboundable the carrier band Application device are provided, which protrudes from the housing and which with the Adhesive film coated side of the carrier tape presents the substrate. Further is one with a slip clutch between the supply reel and the take-up reel provided drive connection provided by the drive of the supply reel Pulling off the carrier tape drives the take-up spool at such a speed that the carrier tape always remains taut. For the entire refill handling at The supply reel and the are to simplify band change for the user Winding reel as well as the application device and the tape guide device in one Exchange cassette added. It also contains completely in the housing provided drive connection a so-called drive and a so-called driven driver pin to attach the two coils so that the interchangeable cassette can be used in the exact position in the housing.

In DE 37 36 357 C2 the process of changing the bobbin is continued for the user simplified. The correct position of the removable cassette is in the area of Application device with an additional support centering pin on the housing and one appropriate bracket mount on the removable cassette ensures, furthermore one against the rotation of the interchangeable cassette around the support centering pin securing bracket is provided.

The applicant's German patent application DE 42 20 712 C2 discloses a Handheld device of a particularly simple and small design. The handheld device for Transfer a film from a carrier tape to a substrate. with a housing, in which a supply reel and a take-up reel for the carrier tape rotatably mounted are, and an application device arranged on the housing, is characterized by a special type of drive connection between the coils. The drive connection with slip clutch is in the form of a friction drive directly between the two Coils formed.

A hand-held device of the type specified in the opening paragraph is JP-A-08 175 738 described. In this prior art handheld device, there is a supply spool and one Winding spool for a film coated carrier tape on a Exchangeable cassette stored, which can be inserted into the housing of the handheld device. One out the housing device that stands out for the carrier tape consists of a application bar attached to the housing and one attached to the removable cassette Belt guide device for the carrier belt. In this known embodiment, the Exchangeable cassette has a recess as a space in which the application bar is located in the inserted position of the removable cassette.

Based on the prior art mentioned, it is the task of the present Invention to provide a handheld device of the type mentioned, which a enables simple exchange of the coils and is simple and inexpensive is to be produced.

This object is solved by the features of claim 1. The two-part Construction of the application device, the application bar on the housing and the Tape guide device are attached to the interchangeable cassette, and the Band guide device is designed such that it is a part of the carrier tape Holds the loop in which the application bar when inserting the removable cassette into the Immersed housing enables easy insertion of the interchangeable cassette and clamping of the carrier tape. Since the interchangeable cassette by the construction according to the invention is relatively simple, it is accordingly simple and inexpensive produced.

In a further development of the invention, locking means are provided in the housing of the hand-held device Conditions provided that the interchangeable cassette in a first position when inserted set in which the tape guide protrudes from the application bar, so that the application bar dips into the loop of the carrier tape, and the After replacing the cartridge, set it in an end position in which the Belt guide device is pushed back relative to the application bar, so that the Carrier tape of the loop runs over the application bar.

Further refinements and developments are the subject of further Dependent claims.

Figur 1

ein erfindungsgemäßes Handgerät in Seitenansicht bei abgenommener zweiter Gehäusehälfte;

Figur 2

das Handgerät von Figur 1 in Draufsicht;

Figur 3

die Wechselkassette des Handgeräts von Figur 1 in Seitenansicht;

Figur 4

die erste Gehäusehälfte des Handgeräts von Figur 1 in Seitenansicht;

Figur 5

die zweite Gehäusehälfte des Handgeräts von Figur 1 in Seitenansicht;

Figur 6

die erste Gehäusehälfte von Figur 1 in Ansicht A von Figur 4;

Figur 7

die erste Gehäusehäifte von Figur 6 mit der Wechselkassette in einer ersten Position; und

Figur 8

die erste Gehäusehälfte von Figur 6 mit der Wechselkassette in einer zweiten Position.

A preferred embodiment of the invention is explained below with reference to the accompanying drawings. In it show:

Figure 1

a handheld device according to the invention in side view with the second housing half removed;

Figure 2

the handheld device of Figure 1 in plan view;

Figure 3

the change cassette of the handheld device of Figure 1 in side view;

Figure 4

the first housing half of the handset of Figure 1 in side view;

Figure 5

the second housing half of the handset of Figure 1 in side view;

Figure 6

the first housing half of Figure 1 in view A of Figure 4;

Figure 7

the first housing half of Figure 6 with the removable cassette in a first position; and

Figure 8

the first housing half of Figure 6 with the removable cassette in a second position.

Figures 1 and 2 show a preferred embodiment of a Handheld device according to the invention in the operational state, i.e. with inserted Interchangeable cassette, and Figures 3 to 6 each show the individual components of the Handheld device according to the invention of Figures 1 and 2. With reference to Figures 7 and 8 the insertion of the interchangeable cassette in the housing explained.

The main components of the handheld device 1 are a housing 2 of handy size, one Exchangeable cassette 3, a supply reel 4 rotatably mounted in the exchangeable cassette 3, one in the interchangeable cassette 3, the take-up reel 5 rotatably mounted, one from the housing 2 outstanding application device 6. the one application bar 10 and one There is a tape guide device 11, a carrier tape 7 and one between the spools 4, 5 arranged drive connection 8 with integrated slip clutch 9. All Parts of the handheld device 1 described above and still to be described preferably made of plastic and can - with the exception of the carrier tape 7 - by Injection molding.

The housing 2 has a teardrop shape in the side view according to FIG. 1, this drop shape can be rounded or polygonal. The horizontal width of the housing 2 is relatively small and is about 20 to 25 mm.

The housing 2 consists of a first housing half 2a and one on it Clamping and / or latching attachable second housing half 2b, which in the Representation of Figure 1 was removed. The peripheral side wall 2c of the housing 2 can both on the first housing half 2a and on the second housing half 2b be molded; the embodiment shown shows the side wall 2c on the second housing half 2b. At the lower front corner of the housing 2 is one Passage opening 12 provided through the closed state of the handheld device 1 the application device 6 protrudes from the housing 2. The passage opening 12 is dimensioned so large that between the bottom and the top of the Application device 6 and the side wall 2c of the housing 2 slots are provided, which form the exit or entry opening for the carrier tape 7.

The carrier tape 7 is - depending on the application - with a colored, opaque or adhesive film coated. The carrier tape 7 that can be pulled off the supply reel 4 is guided around the application device 6 and runs back into the housing 2 Take-up spool 5. To apply the film to a substrate such as Paper, the application bar 10 of the application device 6 is pressed against the substrate, so that the film presented to the substrate adheres to the substrate.

The supply reel 4 and the take-up reel 5 are in an exchangeable cassette 3 arranged. The exchangeable cassette 3 is essentially a plate of drop-shaped Outline of the housing 2, which can be inserted or inserted into the first housing half 2a is. For the exact positioning and as an insert for the removable cassette 3 are on the first housing half 2a a plurality of locking means 14 in the form of pins or webs attached, the corresponding locking means 15 in the form of recesses or Engage openings in plate 3. The locking means 14, 15 can be on the edge or be arranged inside the plate 3. The insertion process and the special one The shape of the locking means 14, 15 will be explained in more detail below with reference to FIGS. 6 to 8 described.

On a line 16, which is approximately parallel to the bottom edge of the housing approximately through the middle Housing 2 runs, are on the plate 3, a bearing sleeve 17 for the supply spool 4 and a bearing sleeve 18 is formed for the take-up spool 5. The outside diameter of the Bearing sleeves 17, 18 are kept somewhat smaller than the respective hub parts 4a, 5a of the two corresponding coils 4, 5, so that the coils 4, 5 on the fixed Bearing sleeves 17, 18 are rotatably mounted. In the embodiment described here is the supply reel 4 with respect to the application device 6 in front of the take-up reel 5 arranged.

The drive connection 8 and the slip clutch 9 between the two coils 4, 5 correspond to the drive connection and slip clutch disclosed in DE 42 20 712 C2 of the applicant. Lateral coil walls 4b, 5b each extend from the hub parts 4a, 5a of the spools 4, 5, between which the carrier tape 7 is wound or is wound. The drive connection 8 and the slip clutch 9 are formed by at least one pair of directly engaging friction surfaces 19, 20, which in the present exemplary embodiment are formed on mutually opposite inner and outer sides of the coil walls 4b, 5b. The sum of the distances _d1 / 2 d _2/2 of the friction surfaces 19, 20 of the rotational axes of the respective coils 4, 5 is dimensioned in this case greater than the axial distance a between the two coils 4, 5, so that the friction surfaces 19, 20 of the coil walls 4b, 5b overlap each other. In the present embodiment, the outer spacing of the coil walls 5b of the take-up spool 5 is adapted to the inner spacing of the spool walls 4b of the supply spool 4, so that the take-up spool 5 with its spool walls 5b fits between the spool walls 4b of the supply spool 4, as shown in the plan view of FIG is. In order to nevertheless ensure the lateral guidance of the carrier tape 7 on the supply reel 4. The supply spool walls 4b can be thickened to the inside of the guide width in the winding area.

When driving between the coils 4. 5 exclusively due to The friction effect between preferably flat friction surfaces 19, 20 is a compressive stress between the friction surfaces 19, 20 required to cause the friction. This can due to a slight oversize or undersize of the external distance between the Take-up reel walls 5b and the inner distance between the supply reel walls 4b can be achieved, the prestressing being based on the elasticity of the material, with which the corresponding coil walls are pressed against each other. 4b and 5b are preferably on both mutually associated coil walls Friction surfaces 19 and 20 in the sense described above, so that two Friction surface pairs are present.

The drive connection 8 between the coils 4 and 5 is to be designed so that under Taking into account the effective winding diameters 21 and 22 each Winding spool 5 is driven so quickly that the winding Carrier band section is always slightly tensioned. Above a certain one in the Drive connection 8 effective drive torque occurs in the slip clutch 9 Function, so that the take-up reel 5 is driven faster, but only with a speed corresponding to the speed of movement of the carrier tape 7 rotates to prevent the carrier tape 7 from tearing.

Depending on the base size of the spool, it is necessary that the drive connection 8 contains a gear ratio in order to drive the take-up spool 5 more quickly. In the present exemplary embodiment, this is achieved in that the average diameter d _{1 of} the annular friction surface 19 on the supply reel 4 is dimensioned larger than the average diameter d _{2 of} the annular friction surface 20 on the take-up reel 5.

It is also possible to apply the friction effect between the coil walls 4b, 5b Elevations and depressions in the form of teeth with associated tooth gaps create or replace, the meshing of which can be bridged to the slip clutch 9 form. For a more detailed description of this alternative for the Drive connection 8 is at this point only on DE 42 20 712 C2 of the applicant directed.

Characterized in that the drive connection 8 and the slip clutch 9 in one piece to the Coils 4, 5 are formed, no additional parts are required. Through the Using small and simple components also becomes a simple and Cost-effective production achieved. The arrangement of the two coils 4, 5 in one Interchangeable cassette 3 makes it easier for the user to change the bobbins and through the The above-described design of the drive connection 8 and the slip clutch 9 must the user when changing the bobbin also not on a proper arrangement of the Pay attention to coils 4, 5, as these together with the drive connection 8 and the Slipping clutch 9 attached in the exact mutual position in the interchangeable cassette 3 are.

As already mentioned above, the carrier tape 7 is applied to apply the film a substrate is guided around the application device 6 protruding from the housing 2, which is pressed against the substrate. This application device is according to the invention 6 constructed in two parts. It consists of one attached to the exchangeable cassette 3 Tape guide device 11 and one attached to the first housing half 2a Application bar 10.

The tape guide device 11 on the exchangeable cassette 3 consists essentially of two protruding from the housing 2 webs 11a, which are approximately parallel to each other and run parallel to the carrier tape 7 at least in the front region. In the front The area of the webs 11a each have two lateral boundary walls 11b, between which the carrier tape 7 is passed. The distance between the lateral boundary walls 11b of a web 11a is dimensioned somewhat larger than that Width of the carrier tape 7. There is a recess 11c between the two webs 11a intended. which is limited to the plate 3 by a contact edge 11d and front end is open. The carrier tape 7 is. as seen in Figure 3, in shape a loop around the front ends of the two webs 11a.

FIGS. 4 and 6 show the first housing half 2a in side view and in view A. shown by Figure 4. The application bar 10 is preferably in one piece with the first Housing half 2a and formed in the front area in the form of a wedge 10a. The The tip of this preferably rigid wedge 10a is advantageously rounded. The rear part of the application bar 10 is opposite the horizontal width of the wedge 10a graded and forms an edition 10c. The order bar leads from this edition 10c 10 at the end in the form of a slope 10d down to the level of the plate 3. in the rear area 10c, 10d is, as shown in Figure 4, a receiving opening 10b in the Application bar 10 is provided, the one provided on the second housing half 2b Centering device 23 (Figure 5) takes.

Analogous to the application bar 10, the locking means 14 are on the first housing half 2a graded. The locking means 14, as shown in Figure 6, of the Application bar 10 also in the rear area on a pad 14a, which is about the same level above the plate 3 as the support 10c of the application bar 10. At the the rear end is also a slope 14b on the support 14a intended.

The insertion of the exchangeable cassette 3 is described below with reference to the two figures 7 and 8. First, the exchangeable cassette 3 is placed on the supports 10c and 14a the application bar 10 or the locking means 14 placed. The contact edge is there 11d of the tape guide 11 and the contact edge 15a of the opening 15 on the rear edges 10e, 14c of the front areas of the application bar 10 and the Locking means 14 on. To make the change cassette 3 easier in this first position the rear edges 10e, 14c can advantageously be beveled.

As shown in FIG. 7, the exchangeable cassette 3 is immersed in this first position Application bar 10 with its wedge 10a in the tight around the tape guide 11 loop around the carrier tape 7. Then the removable cassette 3 moved back until the contact edges 11d and 15a over the bevels 10d and 14b slide down and the plate 3 rests on the housing half 2a.

This end position is shown in Figure 8. The wedge 10a of the application bar 10 protrudes into this position by the two webs 11a of the belt guide device 11 from the Housing 2 out, the carrier tape 7 taut around the tip of the wedge 10a is led around. The lateral position of the carrier tape 7 is still by the lateral boundary walls 11b on the webs 11a of the belt guide device 11 guaranteed.

The two-part application device 6 according to the invention described above has the following Advantage: The application bar 10 integrally formed on the first housing half 2a serves for Insert the interchangeable cassette 3 into the housing 2 at the same time as the receiving and Positioning device for the tape guide device formed on the interchangeable cassette 3 11 and for tensioning the carrier tape 7. So you need next to the Application device 6 only the relatively simply shaped locking means 14 on the Housing 2, and the removable cassette 3 and the carrier tape 7 are still simple and Can be used in the exact position in the housing 2. On the removable cassette 3 itself is on Place a complex application device 6 as in conventional handheld devices only a simple tape guide 11 is formed. The exchangeable cassette 3 is thus simple, material-saving and inexpensive to manufacture.

As shown in FIG. 5, the second housing half 2b has a secure receptacle for the two coils 4, 5 in the housing 2b two bearing sleeves or bolts 24 and 25 for the Recording of the molded sleeves 17 and 18 on the interchangeable cassette 3. The The outer diameter of the bearing sleeves or bolts 24, 25 corresponds approximately to that Inner diameter of the bearing sleeves 17, 18, preferably a light one Clamping effect can be achieved.

Furthermore, a is concentric with the bearing sleeve 24 on the second housing half 2b Support ring 26 of larger diameter attached. The diameter and the height of the support ring 26 are dimensioned so that the coil wall 4b of the supply coil 4 in their inner area (within the friction surface 19) rests on this support ring 26.

In addition, the second housing half 2b above the passage opening 12 on the Outside of the side wall 2c, a fastening device 27 for a (not shown) Cover cap on. The cover cap can be removed from the passage opening 12 outstanding applicator 6 can be folded around so that when not in use of the hand-held device 1, the application device 6 and that guided around it Carrier tape 7 are protected.

Also on the outside of the side wall 2c is in the area above the Through opening 12 a corrugation 28 is provided. The corrugation 28 serves that user to rest his index finger so that the handheld device 1 is safe from the user can be held in the hand.

To form a loop when the handheld device 1 is used incorrectly To avoid carrier tape 7, the take-up reel 5 can preferably be a (not shown) backstop are assigned. The backstop can, for example be formed by a pawl drive, consisting of one on the Circumferential edge of one of the winding reel walls 5b arranged ring gear, which with interacts with a latch arm. The latch arm extends approximately tangentially Direction to the ring gear and is so with a spring force against the ring gear applies that the pawl arm runs in the winding direction over the ring gear and in the opposite direction of rotation by engaging the ring gear Reverse rotation of the take-up reel 5 locks.

Claims (11)

1. Hand-held appliance (1) for transferring a film from a carrier tape (7) to a substrate, having

   a casing (2),

   an interchangeable cassette (3) which can be inserted into the casing (2),

   a supply spool (4) for a carrier tape (7) coated with a film and a wind-up spool (5) for taking up the carrier tape (7) separated from the film, both spools being accommodated in the interchangeable cassette (3),

   an applicator device (6) which deflects the carrier tape (7), projects out of the casing (2) and presents the side of the carrier tape (7) coated with the film to the substrate, and which consists of an applicator strip (10) attached to the casing (2) and of a tape-guiding device (11), attached to the interchangeable cassette (3), for the carrier tape (7), the tape-guiding device (11) being formed such that it holds a part of the carrier tape (7) ready as a loop into which the applicator strip (10) plunges when the interchangeable cassette (3) is being loaded into the casing (2), and

   a drive connection (8), provided with a slip clutch (9), between the supply spool (4) and the wind-up spool (5), which, when the supply spool (4) is driven by the carrier tape (7) being drawn off, drives the wind-up spool (5) at a rotational speed which is such that the carrier tape (7) always remains tensioned,

   characterised in that
   the applicator strip (10) has a seat (10c) which secures the interchangeable cassette (3), when it is being loaded into the casing (2), in a position in which the tape-guiding device (11) protrudes with respect to the applicator strip (10) such that the applicator strip (10) plunges into the loop of the carrier tape (7) and the interchangeable cassette (3) with tape-guiding device (11) can be moved back with respect to the applicator strip (10) and inserted into the casing (2).
2. Hand-held appliance according to Claim 1,
   characterised in that
   locking means (14) for the interchangeable cassette (3) are provided in the casing (2) which secure the interchangeable cassette (3) in a position in which the tape-guiding device (11) is moved back with respect to the applicator strip (10) such that the carrier tape (7) of the loop runs over the applicator strip (10).
3. Hand-held appliance according to Claim 2,
   characterised in that
   the locking means (14) have seats (14a) which secure the interchangeable cassette (3), when it is being loaded into the casing (2), in a position in which the tape-guiding device (11) protrudes with respect to the applicator strip (10) such that the applicator strip (10) plunges into the loop of the carrier tape (7) and the interchangeable cassette (3) with tape-guiding device (11) can be moved back with respect to the applicator strip (10) and inserted into the casing (2).
4. Hand-held appliance according to Claim 2 or 3,
   characterised in that
   the locking means (14) have slopes (14b) for simplifying the operation of loading the interchangeable cassette (3) into the casing (2).
5. Hand-held appliance according to one of the preceding claims,
   characterised in that
   the applicator strip (10) has slopes (10d) for simplifying the operation of loading the interchangeable cassette (3) into the casing (2).
6. Hand-held appliance according to one of Claims 2 to 5,
   characterised in that
   openings or recesses (15) in which the locking means (14) of the casing (2) engage are provided on the interchangeable cassette (3).
7. Hand-held appliance according to one of the preceding claims,
   characterised in that
   the tape-guiding device (11) has a cutout (11c) for receiving the applicator strip (10).
8. Hand-held appliance according to one of the preceding claims,
   characterised in that
   the casing (2) consists of a first casing half (2a) and a second casing half (2b), the side wall (2c) of the casing (2) being integrally moulded onto one of the two casing halves (2a, 2b), and in that the applicator strip (10) and the locking means (14) are integrally moulded onto the first casing half (2a).
9. Hand-held appliance according to one of the preceding claims,
   characterised in that
   the applicator strip (10) is integrally moulded as a rigid component onto the casing (2).
10. Hand-held appliance according to one of the preceding claims,
    characterised in that
    the interchangeable cassette (3) is designed as a plate onto which two bearing sleeves (17, 18) for the spools (4, 5) are integrally moulded.
11. Hand-held appliance according to one of the preceding claims,
    characterised in that
    the drive connection (8) and the slip clutch (9) is formed by a direct friction contact between the spool bodies (4b, 5b).

Images