HK1012501B - Peeling device, tape processing device incorporating the same, and tape printing apparatus incorporating the latter - Google Patents

Description

Stripping device, paper tape processing device containing the same and paper tape printing device containing the same

The present invention relates to a peeling apparatus (peeling apparatus) for peeling a peeling paper from a tape having the peeling paper, for example; the tape processing device is composed of the peeling device and a trimming device for shaping and cutting the end of the tape peeling paper formed into a label shape into a circular arc shape; the paper tape printing device is provided with the paper tape processing device.

As a conventional finisher, there is one disclosed in Japanese patent application laid-open No. Hei 3-287397, which is disposed on a tape printing apparatus. In this type of web printing device, a finishing device is provided which is adapted to the web width of the web release paper forming the object to be finished, and the finishing device is replaced each time according to the web width. The trimming device is composed of a cutter assembly for trimming the end of the paper strip of the cut-off paper strip and a guide member for guiding the paper strip inserted into the cutter assembly. After printing is completed, the paper tape with the release paper discharged from the paper tape printing device is inserted into the trimming device, so that the two corners of the paper tape with the release paper are formed into circular arcs, and the ends are automatically trimmed and cut.

On the other hand, as a conventional peeling device, one disclosed in Japanese patent application laid-open No. 5-169749 is known. The peeling device is a subsidiary of a paper tape printing apparatus, and is configured to clamp a corner portion of a paper tape with a peeling paper between a punch and a die to partially permanently deform the paper tape with the peeling paper. In this case, since the return shapes of the tape base and the release paper in the permanent deformation are different depending on the material properties of the tape, the release paper is slightly peeled from the tape base by the punching of the punch. Therefore, the release paper can be peeled from the tape with the release paper by using this portion as a portion to be peeled by hand.

In such a conventional peeling device, it is necessary to determine the impact area and the impact depth of the punch and the die in consideration of the rigidity and difference between the tape base and the release paper and the adhesion force of the adhesive to the release paper, and hence peeling reliability is poor and it is not satisfactory. Further, since the tape base and the release paper are permanently deformed, there are problems that a bending defect is generated in the tape base, unevenness is generated in the tape base stuck to the sticking object, and the tape base is easily peeled from the sticking object.

Since the finisher and the peeler are not operated simultaneously, when the paper tape is set separately in a printing apparatus or the like, it is necessary to provide a configuration in which a drive source such as a motor is provided separately. Thus, an overlapping portion occurs in the apparatus structure, and the entire apparatus is increased in size and cost.

The invention provides a stripping device which can reliably and efficiently strip stripping paper from an adhesive paper tape.

The object of the invention 2 is to provide a paper tape processing apparatus and a paper tape printing apparatus provided with the paper tape processing apparatus, which are limited between a trimming mechanism and a peeling mechanism as much as possible, make the apparatus structure common, and enable the apparatus to be miniaturized and cost-down.

A peeling apparatus according to embodiment 1 of the present invention for achieving the above object 1 is a peeling apparatus for partly peeling a peeling paper from an adhesive tape which is formed by laminating a tape base having one side surface coated with an adhesive and a peeling paper adhered to the tape base via the adhesive, the peeling apparatus comprising: a drive source that generates a drive force; a revolving body that is rotationally driven by power transmitted from the driving source; a peeling protrusion provided on an end surface of the rotator, and rotating and contacting with a tape base side of an end portion of the adhesive tape to deflect and release the peeling protrusion; a holding mechanism guiding the insertion of the adhesive paper tape to the stripping protrusion and leaving a free end adjacent to the stripping protrusion to hold an end of the adhesive paper tape.

With this peeling device, when the end of the adhesive tape is brought close to the peeling protrusion which rotates by the rotating body by the holding mechanism, the free end of the adhesive tape repeats flexing or releasing of the flexing operation by the peeling protrusion. At this time, since the peeling protrusion is in rotary contact with the tape base side of the adhesive tape, the free end of the adhesive tape is deflected with the tape base as the outside and the peeling tape as the inside. Since the radius of curvature (R) formed by this deflection is small on the release paper tape side and large on the paper tape base side, an interlayer slip against the adhesive is generated between the paper tape base and the release paper. And the leading end of the release paper slightly protrudes from the leading end of the base of the paper tape by the slippage between the layers. Thus, when the adhesive tape is separated from the adhesive tape after the peeling protrusion deflects the adhesive tape to the maximum, the tip of the peeling protrusion is separated from the tape base body with a slight time interval, and then is separated from the peeling paper. In a state where the peeling protrusion is separated from the tape base, the tip of the peeling protrusion presses the peeling paper to bring (the free end of) the tape base into a free state, and the tape base returns from the deflected state to the original linear state together with the adhesive. At this time, when the elastic force due to the recovery of the tape base exceeds the adhesion force of the adhesive to the release paper, the release paper is peeled off from the tape base. Even when the tape is not peeled, since the adhesive force of the adhesive to the release paper is reduced, the release paper is peeled from the tape base by repeating this operation. Further, if the above-mentioned deflection is in the region of elastic deformation for (the free end of) the tape base and in the region of permanent deformation for (the free end of) the release paper, the release paper remains bent after the deflection is released and the release paper after the release is not stuck to the tape base again although the tape base returns to its original shape. On the other hand, since the peeling projections are provided on the end face of the rotator, the end of the paper tape base can be made sufficiently deep toward the center of the rotator, and the entire device can be made more compact and smaller than the case where the peeling projections are provided on the peripheral surface of the rotator.

Preferably, the peeling protrusion is continuously brought into contact with the end portion of the adhesive tape from the leading end to the base end of the free end of the adhesive tape.

With this preferred embodiment, the free end of the adhesive tape can be gradually bent from the portion having a small attachment area to the portion having a large attachment area. That is, the peeling operation is performed from the portion that is easily peeled to the portion that is difficult to peel. When the adhesion force of the adhesive to the release paper is small and only the adhesion force is considered, the adhesive is in a state of being easily peeled, but the start portion of peeling is difficult to form. Therefore, by performing the peeling operation from the easy-to-peel portion to the difficult-to-peel portion, the start of peeling can be easily formed, and peeling of the release paper at the free end of the adhesive tape can be promoted. In the rotary contact method, when the tip of the adhesive tape is brought close to the center of the rotator, the peeling protrusion (contact surface) is inclined or curved with respect to the radial extension of the rotator; on the other hand, when (the contact surface of) the peeling protrusion is provided along the radial direction of the rotator, the leading end of the adhesive tape is formed so as to be adjacent to a position eccentric from the center of the rotator. When the tip of the adhesive tape is brought close to the rotator in the axial direction, the (contact surface of the) peeling protrusion is inclined or curved to protrude.

Preferably, the holding means has a side guide wall for guiding a side of the end of the adhesive tape along an end face of the rotator in an inserted manner.

Since the corner of the end of the adhesive tape constitutes the portion where the peeling paper is most easily peeled, when the corner is brought into contact with the peeling protrusion, it is usually necessary to bring the adhesive tape obliquely close to the peeling protrusion. However, with this configuration, the peeling protrusion can be brought into contact with one corner of the end portion of the adhesive tape inserted toward the center of the rotator. That is, even if the end of the adhesive tape is brought into parallel proximity with the peeling protrusion, the corner can be brought into rotary contact with the peeling protrusion. Therefore, the device structure can be simplified, and the trouble of inserting the adhesive tape obliquely can be eliminated.

Preferably, the holding means has a pair of guide walls for guiding the adhesive tape in a manner that the adhesive tape is bent in the front-back direction with respect to the insertion direction and inserted.

In this preferred mode, the end portion of the adhesive paper tape is bent, whereby the adhesive paper tape can be held by its own rigidity on the holding mechanism. That is, by inserting the adhesive tape into the holding mechanism, it is not necessary to hold the adhesive tape by using a special member such as a press adhesive tape. This allows the adhesive tape to be smoothly inserted into and withdrawn from the holding mechanism.

Preferably, a portion of the holding mechanism opposite to the side guide wall is opened to the outside.

In this way, the peeled adhesive tape can be easily ejected from the holding mechanism in the direction opposite to the side guide wall. Further, unlike the case where the adhesive paper tape is withdrawn from the curved holding mechanism in the opposite direction to the insertion direction, the release paper capable of preventing the peeling is re-stuck. Furthermore, it is possible to insert, i.e. peel off, various adhesive tapes irrespective of the tape width.

Preferably, at least one of the pair of face guide walls is provided with a chamfered portion for receiving a corner portion of an end of the adhesive tape at a tip of the face guide wall on the side of the release paper of the adhesive tape on the side of the release projection so that the corner portion becomes a free end.

In this way, the corner of the end of the adhesive tape which is most easily peeled off can be made to be adjacent to the peeling protrusion as a free end by simply inserting the adhesive tape into the holding mechanism.

Preferably, the leading end of the peeling protrusion is formed in parallel with the opposing chamfered portion.

In this manner, the corners (free ends) of the end portions of the adhesive tape can be uniformly and sufficiently bent, and the peeling function can be stabilized.

Preferably, when the thickness of the adhesive tape is t, the clearance δ between the leading end of the peeling protrusion and the oblique side facing each other in parallel satisfies the condition t ≦ δ ≦ 10 t.

Preferably, the separation projection is formed of a plurality of separation projection pieces arranged substantially radially on an end surface of the rotator, and the separation projection pieces include a long separation projection piece and a short separation projection piece.

In this manner, the long peel-off projection piece deflects the entire free end of the end portion of the adhesive tape, and the short peel-off projection piece deflects the leading end portion of the free end of the end portion of the adhesive tape. Thus, in the adhesive paper tape which is difficult to peel, the long peeling protrusion pieces weaken the adhesive force of the adhesive to the whole peeling paper of the free end, and the short peeling protrusion pieces intensively peel the tip of the free end which is easy to peel. Therefore, the release start can be easily formed, and the release of (the release paper of) the adhesive tape can be further promoted.

Preferably, a drive control means is provided for causing the drive source to generate a drive force before the leading end of the adhesive tape is inserted into the turning locus of the peeling protrusion.

Preferably, the drive control means detects a leading end of the adhesive tape inserted adjacent to the holding means and causes the drive source to generate the drive force.

In this case, the peeling protrusion is rotated when the end of the adhesive tape approaches the peeling protrusion because the rotation of the rotator is started by the driving source while the adhesive tape is inserted into the holding mechanism. That is, the end of the adhesive tape is gradually inserted into the turning locus of the peeling protrusion which turns, and finally, is bent from the tip end portion which forms the free end portion.

The 2 nd embodiment of the present invention made to achieve the above 2 nd object is a tape processing apparatus for processing a tape with a release paper, comprising: a trimming mechanism for trimming and cutting the end of the paper tape with the release paper; a peeling mechanism for peeling the peeling paper from the paper tape with the peeling paper; a single driving mechanism for operating the trimming mechanism and the peeling mechanism; and a power transmission mechanism for transmitting the power of the driving mechanism to the trimming mechanism and the peeling mechanism.

With this paper tape processing apparatus, the power of the driving mechanism can be transmitted in 2 directions via the power transmission mechanism, and the trimming mechanism and the peeling mechanism can be operated separately. Thus, the trimming means can perform trimming and cutting of the end of the tape with the release paper, while the peeling means can perform peeling of the release paper from the tape with the release paper. That is, the trimming mechanism and the peeling mechanism can be operated by a single driving mechanism, and one driving source can be shared between the trimming mechanism and the peeling mechanism.

Preferably, the drive mechanism includes a drive shaft and a motor for rotating the drive shaft in the forward and reverse directions, and the power transmission mechanism is a one-way clutch having an input side fixed to the drive shaft and an output side connected to the dressing mechanism, and transmitting only a forward rotational force of the motor to the dressing mechanism.

In this case, when the motor rotates forward, the power transmission mechanism can transmit power to the trimming mechanism and the peeling mechanism to operate both the trimming mechanism and the peeling mechanism, and when the motor rotates backward, the one-way clutch can prevent power from being transmitted to the trimming mechanism and only the peeling mechanism operates. Thus, no load of the trimming mechanism acts on the motor when the peeling mechanism is operated. In this case, the load of the peeling mechanism for peeling the release paper from the tape with the release paper is smaller than the load of the end of the tape for shaping and cutting the release paper with the trimming mechanism. That is, the trimming means performs the shaping cutting when the peeling means subjected to a small idling load is idling, and the trimming means subjected to a large idling load completely stops operating when the peeling means performs the peeling operation, so that the load applied to the motor as a whole can be reduced.

Preferably, the one-way clutch is provided with: a 1 st gear fixed to the drive shaft; a 2 nd gear meshed with the 1 st gear; an output wheel which is arranged on the same shaft with the 2 nd gear and connects the output side with the trimming mechanism; and a clutch body disposed between the 2 nd gear and the output wheel and transmitting only the positive rotational force of the motor to the dressing mechanism.

In this manner, the power transmitted from the 1 st gear to the 2 nd gear can be transmitted from the 2 nd gear to the output wheel via the clutch body in the case of positive rotational power, and the dressing mechanism can be operated. On the other hand, in the case of reverse power, the power can be cut off by the clutch body. Since the output wheel is provided coaxially with the 2 nd gear, the clutch body can be simply configured concentrically with the drive shaft.

Preferably, the clutch body is provided with: a ratchet wheel arranged on any one of the 2 nd gear and the output wheel; a pawl provided on the other side, capable of freely rotating, and engaged with the ratchet; a spring for biasing the pawl in the engaging direction.

In this way, the clutch mechanism capable of operating correctly can be configured very simply from the ratchet and the pawl.

Preferably, the dressing mechanism includes a crank mechanism for converting the rotation of the output wheel into reciprocating movement, and a cutter for performing cutting operation by the reciprocating movement of the crank mechanism.

In this way, the cutter for performing a series of cutting operations by reciprocating movement can be constituted by the crank mechanism. That is, the cutter can be configured to move or rotate the movable blade in parallel.

Preferably, the 1 st gear further includes an output unit for transmitting the rotating power of the motor in forward and reverse rotation to the peeling mechanism.

In this way, the rotation power of the motor in the forward and reverse rotation can be transmitted to the peeling mechanism with a simple structure using the 1 st gear. The output unit body may be provided with a one-way clutch, or a one-way clutch may be provided between the output unit and the peeling mechanism to operate only the peeling mechanism when the motor is rotated reversely.

Preferably, the one-way clutch includes an input-side phase ratchet fixed to the drive shaft and an output-side phase ratchet rotatably and slidably supported in the axial direction on the drive shaft.

In this way, the one-way clutch can be configured with a simple structure. In addition, the two phase ratchets are in sawtooth shapes, so that the rotation power can be continuously transmitted by the input side phase ratchet and the output side phase ratchet without idle rotation in the forward rotation process; when the rotation is reversed, the output side phase ratchet and the input side phase ratchet are separated to instantly release the connection between the two, and the power can be instantly and smoothly cut off.

Preferably, said output side phase ratchet has a worm on the output side, and said dressing mechanism has a worm wheel on the input side which engages said worm; an adhesive for rotating the worm in conjunction with the drive shaft is disposed between the drive shaft and the worm.

In this way, when the input-side phase ratchet is rotated in the normal direction by the drive shaft, the worm of the output-side ratchet rotates in conjunction with the drive shaft in a state where both phase ratchets are not engaged. At this time, although the worm rotates the worm wheel of the dresser meshing with the worm, the worm wheel rotates without applying a load to the dresser, and as a result, the worm moves in the axial direction (receives a force in the axial direction) while rotating in conjunction with the screw of the worm wheel. Thus, the output-side phase ratchet is coupled to the input-side ratchet, the rotational power of the input-side phase ratchet is transmitted to the output-side phase ratchet, and the dressing mechanism is operated by the output-side phase ratchet. On the other hand, when the input-side phase ratchet is reversed by the drive shaft, the input-side phase ratchet springs the output-side phase ratchet forward, and the output-side phase ratchet that is sprung open rotates its worm in conjunction with the drive shaft, and moves in the axial direction away from the input-side phase ratchet via the worm wheel. Thereby, the rotation power from the input side phase ratchet to the output side phase ratchet is cut off.

Preferably, a stopper is provided for restricting the axial movement of the worm while maintaining the engagement between the worm and the worm wheel in a state where the engagement between the input-side phase ratchet and the output-side phase ratchet is released.

In this case, the worm of the output-side phase ratchet is restricted from moving in the axial direction by the stopper after the engagement between the input-side phase ratchet and the output-side phase ratchet is released, and the worm wheel becomes resistant and becomes in the rotation stop state against the sticking force of the adhesive. Since the engagement between the worm and the worm wheel is maintained by the stopper in this state, when the drive shaft is subsequently rotated in the normal direction, the worm moves in the axial direction while rotating in conjunction with the drive shaft as described above, and the output-side phase ratchet and the input-side phase ratchet are engaged with each other. That is, the interruption between the output-side phase ratchet and the input-side phase ratchet can be automatically performed by the forward and reverse rotation of the drive shaft.

Preferably, the dressing mechanism includes a crank mechanism for converting rotation of the worm wheel into reciprocating movement, and a cutter for performing cutting operation by reciprocating movement of the crank mechanism.

In this way, the cutter for performing a series of cutting operations by reciprocating movement can be constituted by the crank mechanism. That is, the cutter can be configured to move or rotate the movable blade in parallel. The cutter can be made into a clamp shape by a structure for rotating the movable blade, and the cutter with sharpness and durability and stable cutting performance can be formed.

Preferably, the input-side phase ratchet further includes an output unit for transmitting the rotating power of the motor in forward and reverse rotation to the peeling mechanism.

In this way, the reverse and forward rotation power of the motor can be transmitted to the peeling mechanism with a simple structure using the input-side phase ratchet. Further, a one-way clutch may be provided in the output unit main body or between the output unit and the peeling mechanism, and only the peeling mechanism may be operated when the motor is rotated reversely.

Preferably, the paper peeling device further comprises a device housing for forming a trimming guide opening for guiding the inserted paper tape with the peeling paper to the trimming mechanism and a peeling guide opening for guiding the paper tape with the peeling paper to the peeling mechanism; the dressing guide opening and the peeling guide opening are disposed adjacent to each other.

In this case, the tape with the release paper is inserted into the trimming guide opening in the device case when the tape with the release paper is trimmed and cut, and the tape with the release paper is inserted into the peeling guide opening when the tape with the release paper is peeled. That is, since the insertion position is different depending on the handling of the tape with the release paper, it is possible to prevent the user from handling the tape erroneously. Further, since the trimming guide opening and the peeling guide opening are provided adjacent to each other, the working area for processing the paper tape with the release paper can be arranged in a concentrated manner, and the path of the power transmission mechanism for transmitting power to the trimming mechanism and the peeling mechanism can be shortened, thereby simplifying the structure of the power transmission mechanism.

Preferably, the tape inserting direction of the tape peeling paper is different between the finishing guide opening and the peeling guide opening.

In this case, when the shaping cutting of the tape with the release paper is performed and when the release paper is peeled, it is necessary to recognize the direction in which the tape with the release paper is inserted into the trimming guide opening and the peeling guide opening, respectively, and it is possible to further eliminate the tape handling error of the tape with the release paper.

Preferably, a forward rotation control mechanism is provided for detecting the tape inserted into the finishing guide opening and rotating the motor forward.

In this case, the motor is rotated in the forward direction by the forward rotation control means when the tape with the release paper is inserted into the trimming guide opening, and therefore, the shaping and cutting of the tape with the release paper can be performed simply by inserting the tape with the release paper into the trimming guide opening, that is, without performing any operation other than the insertion operation.

Preferably, a reverse control mechanism is provided for detecting the tape inserted into the peeling guide opening and reversing the motor.

In this case, the motor is rotated in the reverse direction by the reverse rotation control means when the tape with the release paper is inserted into the peeling guide opening, and therefore, the release paper can be peeled off from the tape with the release paper by simply inserting the tape with the release paper into the peeling guide opening, that is, without performing any operation other than the insertion operation.

In accordance with embodiment 3 of the present invention to achieve the above object 2, there is provided a tape printing apparatus which can use a tape with a release paper, comprising: a printing mechanism for printing on the paper tape with the release paper; a cutter mechanism for cutting the paper tape with the release paper into a predetermined length; a paper tape conveying mechanism for conveying the paper tape printed by the printing mechanism and provided with the release paper to the outside by being adjacent to the cutter mechanism; and a tape processing device for processing the tape cut into the predetermined length of the release paper. A trimming mechanism for shaping and cutting the end of the paper tape cut into the predetermined length; a peeling mechanism for peeling the release paper from the paper tape cut into the predetermined length; a single driving mechanism for operating the trimming mechanism and the peeling mechanism; and a power transmission mechanism for transmitting the power of the driving mechanism to the trimming mechanism and the peeling mechanism.

With this web printing apparatus, it is possible to print on a web with a release paper, cut it, and convey it to the outside of the apparatus. Furthermore, the printed paper tape with the release paper can be shaped, cut (trimmed) and peeled (peeled) by the same device. Therefore, a label that can be easily and visually attached can be easily produced from a paper tape with a release paper.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description thereof, which proceeds with reference to the accompanying drawings.

Fig. 1 is an external perspective view of a paper tape printing apparatus according to an embodiment of the present invention.

FIG. 2 is a top view of a web printing apparatus according to one embodiment of the present invention.

Fig. 3 is a front view of a web handling device installed in a web printing device.

Fig. 4 is a top view of a web handling device incorporated in a web printing device.

Fig. 5 is a right side view of the web handling apparatus installed in the web printing apparatus.

Fig. 6 is a rear view of the tape processing apparatus incorporated in the tape printing apparatus.

Fig. 7 is a top view showing a relationship between a peeling protrusion and a peeling inlet of the tape processing apparatus.

Fig. 8 is a top view showing a peeling operation of the printing paper tape.

Fig. 9 is an enlarged top view showing a peeling operation of the printing paper tape.

Fig. 10 is a perspective view showing a state where the release paper is peeled from the printing paper tape by the paper tape processing apparatus.

Fig. 11 is an enlarged cross-sectional view showing the periphery of the worm of the 1 st modification of the light engagement mechanism.

Fig. 12 is an enlarged cross-sectional view showing the periphery of the worm of the 2 nd modification of the light engagement mechanism.

Fig. 13A and 13B are top views showing 2 peeling forms of the printing paper tape, respectively.

Fig. 14 is a rear view around the clutch mechanism of embodiment 2.

Fig. 15 is a top view of the periphery of the clutch mechanism of embodiment 2.

Fig. 16 is an exploded oblique view around the clutch mechanism of embodiment 2.

Next, a tape processing apparatus and a tape printing apparatus provided with the same according to an embodiment of the present invention will be described with reference to the drawings. This tape printer prints desired characters, graphics, and the like on a printing paper tape of a tape-release paper, and cuts the printing paper tape printed thereon to a predetermined length to form a label-like printing paper tape. The tape printer has a function of shaping and cutting the corner of the label-like printing tape into a circular arc shape, and a function of partially peeling off the release paper at the corner of the label-like printing tape.

Fig. 1 is an oblique view of a paper tape printing apparatus. Fig. 2 is a top view thereof. As shown in these figures, the tape printer 1 includes a device case 2 for housing the components, an input unit 3 having a plurality of input keys 3a disposed on the front half of the device case 2, a display unit 4 disposed on the rear half of the device case 2, and an opening/closing cover 5. The tape cartridge 6 is mounted inside the switch cover 5, and the printing tape T is accommodated therein, and the mounting of the tape cartridge 6 can be confirmed from the outside through a see-through window 7 formed in the switch cover 5.

Further, a print head 8 and a printing roll roller 9 are disposed inside the opening/closing cover 5, the former being located near the tape cartridge 6 and constituting a printing mechanism, and the latter being located on the tape cartridge 6 facing the print head 8 and constituting a tape feeding mechanism. The printing tape T is fed from the tape cartridge 6 by the printing roll roller 9, and is fed to the outside of the apparatus while being printed by the printing head 8. Further, a cutter mechanism 10 is installed in the apparatus housing 2 near the left side of the tape cartridge 6, and a tape discharge port 11 for feeding the printing tape T to the outside of the apparatus is formed in the left side portion of the apparatus housing 2 adjacent to the cutter mechanism 10. The printing tape T is fed from the tape discharge port 11 while being printed, but when printing is completed, the feeding operation of the printing tape T is stopped, and the cutter mechanism 10 is operated to cut the printing tape T to a predetermined length (printing portion + blank).

On the other hand, a tape processing device 12 for shaping and cutting the end of the printing tape T into a circular arc shape and peeling off the peeling paper c from the printing tape T is installed in the device case 2 behind the display unit 4. A tape feed port 13 for feeding an end of the printing tape T into the tape processing device 12 is formed on the device case 2 corresponding to the tape processing device 12. The tape inlet 13 is integrally formed by a shaping/cutting inlet (a shaping/cutting guide) 14 inclined toward the inside of the device case 2 and a peeling inlet (a peeling guide) 15 provided so as to intersect the shaping/cutting inlet 14. When the printing tape T is inserted into the shaping and cutting inlet 14, the tape processing device 12 is driven to shape and cut the corner portion of the end of the printing tape T into a circular arc shape. Similarly, when the printing tape T is inserted into the peeling inlet 15, the tape processing apparatus 12 is driven to peel off the peeling paper c at the corner of the end of the printing tape T.

The tape printer 1 first opens the opening/closing cover 5 to install the tape cartridge 6 in the device case 2, and then closes the opening/closing cover 5. Then, a power switch (not shown) is used to input operation power, and the input unit 3 is used to input printed characters and the like. When a character string to be input is to be converted into characters, a predetermined input 3a is operated to instruct printing, and printing is performed on a printing tape T continuously output from a tape chuck 6 by a printing head 8. The printing and parallel printing tape T is fed from the printing roll roller 9 and is fed to the outside from the tape discharge port 11. Therefore, when the feeding of the printing tape T is stopped in printing characters, the cutter mechanism 10 is driven to cut the printing tape T.

On the other hand, when the cut printing paper tape is inserted into the shaping and cutting inlet 14, the corner of the printing paper tape T is shaped and cut into an arc shape. The opening width of the shaping and cutting inlet 14 corresponds to the maximum width of the printing tape T, and both corners are simultaneously shaped and cut when the printing tape T having the maximum width is inserted, while each of both corners is shaped and cut when a narrow printing tape T is inserted because the printing tape T moves left and right in the shaping and cutting inlet 14. When the insertion is performed with the printing tape T reversed in the front-rear direction, the four corners of the printing tape T can be cut. When the printing tape T is inserted into the peeling inlet 15 before the shaping and cutting are not performed, the peeling paper C at the corner of the end of the printing tape T can be peeled. When the release paper is peeled off from the printing tape T, the printing tape T can be stuck to the object to be adhered as a label by using the peeled portion as a hand grip portion.

The printing tape T is a so-called release-paper-attached adhesive paper, and is composed of a tape base a on which an adhesive b is applied, and a release paper c (see fig. 9) which is attached to the tape base a via the adhesive b. The tape base a is made of vinyl chloride resin, polypropylene resin, or the like, and in the present embodiment, polyethylene terephthalate (PET) is used. The release paper c is made of silicon-treated paper for easy release. The printing paper tape T has various tape widths, for example, 24mm, 18mm, 12mm, 9mm, and these various printing paper tapes T having different widths are wound around and are accommodated in the tape cartridge 6 and supplied together with the tape cartridge 6.

Next, the tape processing apparatus 12 will be described in detail with reference to fig. 3 to 5. Fig. 3 is a front view showing the periphery of the tape processing apparatus 12, fig. 4 is a top view of the tape processing apparatus 12 shown in fig. 3, and fig. 5 is a right side view of the tape processing apparatus 12 shown in fig. 3. As shown in these figures, the tape processing apparatus 12 is provided with a motor (drive mechanism) 21 capable of rotating forward and backward, a trimming mechanism 22 for shaping and cutting an end portion of the printing tape T, a peeling mechanism 23 for partially peeling off the peeling paper c from the printing tape T, a clutch mechanism (power transmission mechanism) 24 for transmitting power of the motor 21 to the trimming mechanism 22 and the peeling mechanism 23, and a main frame 25 and a sub-frame 26 for supporting these components. The motor 21 is rotated in the forward direction by turning on a below-described dressing switch 61, and is rotated in the reverse direction by turning on a peeling switch 91. The rotation power of the motor 21 is transmitted to the dressing mechanism 22 and the peeling mechanism 23 by being split by the clutch mechanism 24. At this time, the clutch mechanism 24 serves as a trigger to interrupt the forward and reverse rotations of the motor 21, and transmits power to the dressing mechanism 22 and the peeling mechanism 23 when the motor 21 rotates forward, and transmits power only to the peeling mechanism 23 when the motor 21 rotates backward.

The main frame 25 includes a lower frame portion 31, an upper frame portion 32 disposed parallel to the lower frame portion 31 with a certain gap therebetween, a connecting frame portion 33 connecting the lower frame portion 31 and the upper frame portion 32, and a back frame portion 34 disposed parallel to the connecting frame portion 33. The sub-frame 26 is located between and parallel to the lower frame portion 31 and the upper frame portion 32. The motor 21 is supported by the lower frame portion 31, the trimming mechanism 22 is supported by the connecting frame portion 33 and the back frame portion 34, and the peeling mechanism 23 is supported by the lower frame portion 31 and the sub-frame portion 26.

The motor 21 is attached to the lower frame portion 31 from below, and its drive shaft 27 extends through the lower frame portion 31 to the vicinity of the upper frame portion 32. The clutch mechanism 24 is mounted on the drive shaft 27.

The clutch mechanism 24 includes an input side clutch 41 fixed to the drive shaft 27 of the motor 21 and an output side clutch 42 rotatably and axially slidably supported on the drive shaft 27 of the motor 21. The input side clutch 41 is integrally formed by a gear portion (output portion) 43 disposed on the lower frame portion 31 side of the drive shaft 27 and transmitting power to the peeling mechanism 23, and an input side phase pawl 44 protruding upward from an end surface of the gear portion 43. The output clutch 42 is integrally formed by a worm 45 disposed on the upper frame portion 32 side of the drive shaft 27 and transmitting power to the dresser mechanism 22, and an output phase pawl 46 projecting downward from an end surface of the worm. Although not shown in the drawings, a grease (light engagement mechanism) having high viscosity such as grease is provided between the worm (output side clutch 42)45 and the drive shaft 27, and the worm (output side clutch 42)45 is rotated in conjunction with the rotation of the drive shaft 27 by this grease.

The input-side phase pawl 44 and the output-side phase pawl 46 are disposed so as to face each other, and transmit power to the dresser mechanism 22 by bringing them close to each other and engaging them (meshing with each other), and cut off power transmission to the dresser mechanism 22 by disengaging them and releasing their engagement. Specifically, when the input-side phase pawl 44 is rotated in the normal direction with the input-side phase pawl 44 and the output-side phase pawl 46 engaged, the engaged state is maintained and the transmission of the operating force is performed; when the reverse rotation is performed, the input-side phase pawl 44 springs open the output-side phase pawl 46 to release the engaged state, thereby cutting off the power transmission.

On the other hand, the worm 45 is engaged with a worm wheel (intermediate transmission mechanism) 47 having a function of an idler gear on the dressing mechanism 22 side. The worm wheel 47 is integrally formed with a crank wheel 56 described below, and is rotatably supported on a shaft member 48 extending rearward from the connecting frame portion 33. A stopper 49 is provided on the upper frame portion 32 coaxially with the drive shaft 27 and projecting downward, and a small diameter portion of the stopper 49 is inserted into an upper end portion of the worm 45 with a certain play. The stopper 49 restricts upward movement of the worm 45, thereby constantly maintaining the worm 45 and the worm wheel 47 in a meshed state. Further, since the stopper 49 has a washer or the like attached to its small diameter portion, the position of the worm 45 can be finely adjusted.

When the drive shaft 27 is rotated in the normal direction by the motor 21 in the clutch mechanism 24 configured as described above, the input side clutch 41 rotates in the normal direction, and the output side clutch 42 rotates in conjunction with the viscous action of grease. At this time, the worm 45 of the output side clutch 42 meshes with the worm wheel 47, and therefore the worm wheel 47 rotates, but the reaction force is received from the worm wheel 47 receiving the load of the dressing mechanism 22. Therefore, the output side clutch (worm 45)42 is gradually moved downward on the drive shaft 27 while being rotated in conjunction with the threads of both, and comes into contact with the input side clutch 41. When the output side clutch 42 hits the input side clutch 41, the input side phase pawls 44 and the output side phase pawls 46 are engaged, the output side clutch 42 and the input side clutch 41 are connected, and the rotational force of the motor 21 is transmitted to the dresser mechanism 22 through the output side clutch 42 and the worm wheel 47.

Conversely, when the drive shaft 27 is rotated in the reverse direction by the motor 21, the input-side phase pawl 44 springs open the output-side phase pawl 46, and in contrast to the above, the worm 45 and the worm wheel 47 are screwed together, so that the output-side clutch (worm 45)42 moves upward on the drive shaft 27 while rotating slowly in conjunction with each other, and collides with the stopper 49. By this series of operations, the output side clutch 42 and the input side clutch 41 are completely disengaged, and the power transmitted to the dresser mechanism 22 is cut off. On the other hand, the output side clutch 42 of the brake member 49 is stopped from interlocking rotation while being subjected to viscous resistance of grease. In addition, even when the drive shaft 27 rotates in the forward and reverse directions, the power can be transmitted to the peeling mechanism 23 through the gear portion 43 of the input clutch 41.

In the clutch mechanism 24 of the present embodiment, the input-side phase pawls 44 and the output-side phase pawls 46 constitute a clutch, and the worm 45 and the worm wheel 47 constitute a worm gear, so that the engagement and disengagement of the two pawls 44 and 46 can be automatically performed by the motor 21 in forward and reverse rotation by combining the two. Of course, as described above, the two phase pawls 44, 46 may be engaged or disengaged by a spring or a pressure lever that presses the output side pawl 46 against the input side phase pawl 44, but unlike the case where a spring is used in the present embodiment, the spring noise (noise) and the friction loss can be prevented from occurring in the two pawls 44, 46 because the two pawls 44, 46 are completely disengaged at the time of the disengagement. Further, unlike the case of using a press rod, a mechanism for operating the press rod can be omitted. Therefore, the structure is simple, the operation sound is reduced, and the durability is improved.

As described below, the operating load of the peeling mechanism 23 is extremely small as compared with the operating load of the trimming mechanism 22 when it is not cut. Therefore, the power transmitted to the trimming mechanism 22 is cut off only when the peeling mechanism 23 is caused to perform the peeling operation, and the load on the motor can be sufficiently reduced. Of course, the cost is increased, but such a clutch mechanism 24 may be provided on the peeling mechanism 23 side.

Next, a modified example of another light joining mechanism that replaces high viscosity grease such as grease will be described with reference to fig. 11 and 12. In the modification 1 of fig. 11, a collar 101 of resin is interposed between a worm (output side clutch 42)45 and a drive shaft 27, and 3 tie-up substitute projections 101a, 101a are formed on the inner peripheral surface of the collar 101. Each tie-substitute projection 101a is in contact with the drive shaft 27, and the worm (output side clutch 42)45 is rotated in conjunction with the rotation of the drive shaft 27 by the tie-substitute projection 101 a.

Similarly, in the 2 nd modification shown in fig. 12, a resin collar 102 is interposed between the worm (output side clutch 42)45 and the drive shaft 27, and 3 spring pieces 102a, 102a are integrally formed on the inner peripheral surface of the collar 102. Each spring piece 102a is lightly urged against the drive shaft 27 to be in contact therewith, and the worm (output side clutch 42)45 is rotated in conjunction with the drive shaft 27 by the action of the spring piece 102 a. In this case, the metallic spring piece may be formed so as to be incorporated into the collar without being integrated therewith. Further, the collar 101, 102 may be formed integrally with the worm (output clutch 42) 45.

Next, the dressing mechanism 22 is explained. As shown in fig. 3 to 5, the dressing mechanism 22 includes a flat plate-shaped cutter 51 disposed so as to cover the clutch mechanism 24 from above, and a crank mechanism 52 for causing the cutter 51 to perform a cutting operation.

The cutter 51 is composed of a fixed blade 53 and a movable blade 54, and is formed by pressing, press forging, and bending a thin plate of elastic stainless steel or the like. Specifically, a rectangular thin plate is punched out with a pair of left and right cutting portions (including cutting lines) 55, 55 left to stand in a substantially "U" shape, and a fixed blade 53 is formed on the inner side thereof and a movable blade 54 is formed on the outer side thereof. The rear part of the fixed blade 53 is placed on the upper end surface of the back frame part 34, and the front part is screwed to the upper frame part 32. On the other hand, the rear center of the movable blade 54 is connected to the crank mechanism 52.

The pair of left and right cutting portions 55, 55 are portions for cutting the left and right corner portions of the printing paper tape T adjacent thereto into circular arc shapes, and each of the portions is composed of a circular arc-shaped cutting blade portion 55a formed on the fixed blade 53 and a cutting blade portion 55b of the movable blade 54 formed into a shape complementary thereto. In this case, the cutting blade portions 55b of the movable blade 54 are twisted and bent in the vertical direction, and when the movable blade 54 performs a cutting operation (turning) in the vertical direction with the tip portion as a fulcrum, the cutting blade portions 55b are folded like scissors with respect to the cutting blade portion 55a of the fixed blade 53. The pair of right and left cutting portions 55, 55 are disposed in the device case 2 so as to face the shaping and cutting inlet 14.

As shown in fig. 6, the crank mechanism 52 is composed of a crank wheel 56 integrated with the worm wheel 47, an eccentric pin 57 provided to protrude from a front end surface of the crank wheel 56, and a slide plate 58 having a long hole 58a engaged with the eccentric pin 57. The slide plate 58 is sandwiched between the back frame part 34 and a guide plate 59 disposed behind the back frame part 34, and is guided slidably in the vertical direction by 2 guide pins 60, 60 bridged between the back frame part 34 and the guide plate 59. The rear portion of the movable blade 54 is inserted into the upper portion of the slide plate 58 and fixed, and the movable blade 54 is vertically moved by the slide plate 58 to perform a cutting operation.

A long hole 58a formed in the slide plate 58 extends in the left-right direction, and the slide plate 58 is moved up and down while the eccentric pin 57 rotated (revolved) by the crank wheel 56 slides in the long hole 58a in the left-right direction. That is, a crank mechanism for converting the rotary motion into the reciprocating linear motion is formed in this portion. The finisher mechanism 22 having the above-described configuration is further provided with a finisher switch (forward rotation control mechanism) 61 for operating the cutter 51 by rotating the motor 21 forward when the printing paper tape T is inserted into the shaping/cutting inlet 14.

As shown in fig. 5, the dressing switch 61 is composed of a pivot arm 62 adjacent to the lower end of the shaping/cutting inlet 14, a switch arm 63 having a tip end portion contacting the pivot arm 62, and a switch body 64 contacting a base portion of the switch arm 63. The rotating arm 62 is composed of a cylindrical main body 62a rotatably supported by the device case 2, a plurality of receiving portions 62b provided at axial intermediate positions of the main body 62a, and a pressing portion 62c provided at an axial end portion of the main body 62a (see fig. 3, 4, and 5), the receiving portions 62b are adjacent to the shaping/cutting inlet 14, and the pressing portion 62c is in contact with a tip end of the switch arm 63. When the printing paper tape T is inserted into the shaping and cutting inlet 14, the receiving portion 62b is pressed by the printing paper tape T, and the pressing portion 62c is rotated about the main body 62a, thereby pressing the switch arm 63.

The switch arm 63 is formed by a plate spring having a base end fixed to the device case 2, and slightly presses the rotary arm 62 by abutting the receiving portion 62b of the rotary arm 62 against the shaping/cutting inlet 14 via the pressing portion 62c of the rotary arm 62. The switch arm 63 in the standby state springs up the pressing portion 62c by the spring force, and closes the switch body 64 that is in contact therewith. On the other hand, when the switch arm 63 is pressed down by the pressing portion 62c against the elastic force, the switch arm 63 presses the switch body 64, thereby turning on the switch body.

That is, when the printing tape T is properly inserted into the shaping/cutting inlet 14, the switch body 64 is turned on by the turning arm 62 and the switch arm 63, and when the printing tape T is withdrawn from the shaping/cutting inlet 14, the switch body 64 is cut. When the switch main body 64 is turned on, the motor 21 is rotated forward by the Controller (CPU)28 to perform the cutting operation of the tool 51, and when the switch main body 64 is turned off, the motor 21 is stopped to stop the cutting operation of the tool 51. That is, the trimming mechanism 22 is automatically operated by inserting the printing tape T into the shaping and cutting inlet 14, and the end portion of the printing tape T is shaped and cut into an arc shape.

Next, the peeling mechanism 23 is explained. As shown in fig. 3, 4, and 6, the peeling mechanism 23 includes an intermediate gear 71 meshing with the gear portion 43 of the input side clutch 41, an input gear 72 meshing with the intermediate gear 71, and a peeling wheel 73 (a rotator) integrally formed with the input gear 72. A peeling protrusion 74 is provided on the upper end surface of the peeling wheel 73, and the peeling protrusion 74 rotates together with the peeling wheel 73 to perform operations of deflecting and releasing the deflection of the end portion of the printing paper tape T. On the other hand, the printing paper tape is peeled by repeating the operations of flexing and releasing the flexing, but the peeled portion is held by the peeling inlet (holding mechanism) 15 so as to constitute the free end Ta (see fig. 8).

The intermediate gear 71 is rotatably supported on a support shaft 75, and the support shaft 75 is bridged between the lower frame portion 31 and the sub-frame portion 26; the input gear 72 and the peeling wheel 73, which are integrally formed, are rotatably supported by a shaft member 76 extending upward from the lower frame portion 31. The peeling wheel 73 rotates in accordance with the forward and reverse rotation of the motor 21 via the two gears 71 and 72, but peels the printing paper tape T by the rotation when the motor 21 rotates in the reverse direction (see fig. 7). Here, before describing the structure of the peeling protrusion 74 in detail, the structure of the peeling inlet 15 facing the rotating peeling protrusion 74 will be described.

The peeling inlet 15 is integrally formed in the apparatus casing 2, and includes a pair of front and rear guide walls 81 and 81 for guiding the front and rear sides of the inserted printing paper tape T, and a side guide wall 82 for guiding the lower side. The side guide walls 82 guide the printing paper tape T along the upper end surface of the peeling wheel 73 and guide the paper tape adjacent to the peeling projections 74. As shown in fig. 1 and 7, the pair of guide walls 81 and 81 are bent into a substantially S-shape with respect to the insertion direction, and the printing paper tape T is inserted thereinto so that the printing paper tape T is bent into a substantially S-shape, and its end (free end) protrudes substantially toward the axis of the peeling wheel 73 and is adjacent to the peeling protrusion 74.

Thus, since the pair of face guide walls 81, 81 are curved, the printing paper tape T inserted therein is held supported between the two face guide walls 81, 81 by its own rigidity, leaving the free end Ta adjacent to the peeling protrusion 74. Therefore, the printing tape T can be held without requiring a special clamping member, and the printing tape T can be smoothly inserted. The portion facing the side guide wall 82, that is, the portion corresponding to the upper surface of the apparatus casing 2 is opened, so that various printing paper tapes T can be inserted regardless of the width of the paper tape T, and the printing paper tape T is allowed to be withdrawn upward (see fig. 1). Since the printing paper tape T is withdrawn upward in this way, it is not necessary to withdraw the printing paper tape T via the curved surface guide wall 81, and the peeled release paper c can be prevented from being stuck to the base tape a again.

The peeling inlet 15 and the peeling protrusion 74 of the present embodiment are designed on the premise that the printing tape T is inserted with the printing surface facing itself. This is done by the user while checking the printing surface, following a general situation, i.e. when handling a paper web to be printed. Therefore, according to the demand of the peeling inlet 15 (not shown), the user stands the printing paper tape T with the base tape a side facing toward himself or herself and the peeling paper c side facing forward, and inserts the printing paper tape T into the peeling inlet 15. In response to this, the peeling protrusion 74 contacts the base tape a side to turn the printing paper tape T in a flexible manner (see fig. 7), and the pair of surface guide walls 81, 81 as a whole are curved in a direction opposite to the turning direction. Thus, the peeling projections 74 are deflected against the bending force applied to the printing paper tape T.

On the other hand, in the present embodiment, one corner portion of the end portion of the printing paper tape T is bent, and this portion is peeled off in a triangular shape. Therefore, the receiving member 83 having the inclined edge portion 83a at the tip end of the surface guide wall 81 located on the side of the release paper c (forward in the rotation direction) is disposed on the pair of surface guide walls 81, 81 (see fig. 3 and 6). The beveled edge 83a of the receiving member 83 faces the rotating peeling protrusion 74, and the free end Ta of the deflected printing paper tape T is received from the peeling paper c side in a triangular shape as the peeling protrusion 74 rotates. This makes it possible to peel off the corner portion, which is most likely to peel off, positively at the end of the printing paper tape T.

As shown in fig. 7, the peeling projections 74 are constituted by 4 short projection pieces 77 each extending in the radial direction from a circular projection 79 formed in the center of the upper end face of the peeling wheel 73 and 4 long projection pieces 78 each extending substantially at right angles from the base of each short projection piece 77. In this case, the end of the printing paper tape T adjacent to the long and short projecting pieces 78, 77 extends to a position slightly eccentric from the axis of the peeling wheel 73, and the short projecting piece 77 is continuously brought into rotary contact with the base end side from the front end side with respect to the end (free end Ta) of the printing paper tape T, so that the free end Ta of the printing paper tape T is deflected from the front end side. Similarly, the long projecting piece 78 extends from an eccentric position in a substantially radial direction on the upper end surface of the peeling wheel 73, and continuously turns from the leading end side to the base end side with respect to the free end Ta of the printing paper tape T, and is deflected from the leading end side.

Further, when the adhesive force of the adhesive to the release paper c is extremely small and the release paper is peeled from the tape base a, the peeling is effectively spread from this portion to the entire region of the free end Ta as the start portion of the peeling. The free end Ta of the triangle is more likely to be peeled off as the bonding area becomes smaller as it approaches the tip. Therefore, by bending the free end Ta of the printing paper tape T from the distal end side toward the base end side, peeling of the distal end portion of the free end Ta can be promoted, and the distal end portion of the free end Ta is collectively bent and released from the bending operation (peeling operation) by the short projection piece 77, and a peeling start portion can be formed. From this state, the peeling operation by the long protrusion piece 78 spreads the peeling over the entire region of the free end Ta to peel the release paper c at the free end. At the same time, the long projecting piece 78 strongly contacts the center of one side (the portion corresponding to the long side of the printing paper tape T) of the free end Ta, and the short projecting piece 77 strongly contacts the center of the other side (the portion corresponding to the short side of the printing paper tape T), so that the free end Ta is uniformly deflected over the entire area.

In this way, since the peeling projections 74 are formed by the long projection pieces 78 and the short projection pieces 77 and are continuously brought into rotary contact with the printing paper tape T from the leading end side toward the base end side, the peeling of the printing paper tape T can be promoted. The peeling projections 74 may be constituted by only a plurality of long projection pieces 78, or a single long projection piece 78.

The long projecting pieces 78 and the short projecting pieces 77 are configured such that the contact surfaces corresponding to the printing paper tape T are perpendicular to the upper end surface of the peeling wheel 73, and the leading ends thereof are chamfered (see fig. 3 and 6) so as to be opposed to the inclined edge portion 83a of the receiving member 83 in parallel. In this case, in order to cause the end (free end Ta) of the printing paper tape T to deflect for peeling (although this is determined by the material properties of the printing paper tape T), it is generally preferable to form the printing paper tape T so that the thickness thereof is "T" and the gap between the tip of the long projecting pieces 78 opposed in parallel and the inclined edge portion 83a is "δ",

t.ltoreq.delta.ltoreq.10 t.

Thus, the rigidity of the tape base a can be effectively utilized in the peeling work, and the occurrence of a warp on the tape base a can be prevented (details will be described later).

In the peeling mechanism 23 having such a configuration, similarly to the finisher mechanism 22, when the printing tape T is inserted into the peeling lead-in port 15, the motor 21 needs to be driven in reverse. Therefore, the peeling mechanism 23 of the present embodiment is provided with a peeling switch (reverse control mechanism) 91. As shown in fig. 4, the peeling switch 91 is composed of a switch arm 92 rotatably attached to the inner surface of the device case 2 above the peeling wheel 73, and a switch body 93 in contact with the switch arm 92. The switch arm 92 is formed in a substantially L-shape, and has a tip end portion adjacent to the bent portion of the peeling inlet 15 and a tail end portion in contact with the switch main body 93.

The switch arm 92 in the standby state is pressed by a spring (not shown) provided in the switch body 93, and the tip end portion thereof is projected toward the curved portion of the peeling introduction port 15. When the printing paper tape T is inserted into the peeling inlet 15 from this state, the switch arm 92 is pushed by the end of the printing paper tape T and rotated. When the switch arm 92 is rotated, the switch body 93 is pressed against the spring action provided inside and turned on. That is, when the printing paper tape T is inserted into the peeling inlet 15, the switch body is turned on by the switch arm 92, and conversely, when the printing paper tape T is withdrawn from the peeling inlet 15, the switch body 93 is turned off. When the switch main body 93 is turned on, the Controller (CPU)28 causes the motor 21 to rotate in the reverse direction, and the peeling wheel 73 rotates to peel the peeling protrusion 74.

In this case, since the motor 21 starts to rotate in a step when the leading end of the inserted printing paper tape T reaches the bending portion of the peeling inlet 15, the peeling protrusion 74 rotates before the leading end of the printing paper tape T reaches the position of (in the rotation path of) the peeling protrusion 74. Therefore, the end of the printing paper tape T can be inserted deep into the peeling protrusion 74, and the end (free end Ta) of the printing paper tape T can be repeatedly peeled by the two kinds of long and short protrusion pieces 77 and 78 from the front end side. Peeling of the release paper c on the free end Ta can also be promoted by this structure.

Specifically, the peeling action of the long projecting piece 78 (short projecting piece 77) is repeated during the time from the insertion of the free end Ta of the printing paper tape T from the leading end thereof into the turning locus of the long projecting piece 78 to the deep insertion. Therefore, the leading end of the free end Ta which is easily peeled off is peeled off at the initial stage of insertion, and the start of peeling is generated. The peeling is then extended from this peeling start portion to the entire region of the free end Ta. As a result, the release paper c was peeled off by bending as shown in fig. 13A. On the other hand, when the long projecting piece 78 (short projecting piece 77) is rotated after the printing paper tape T is inserted into the rotation path of the long projecting piece 78, the release paper c is also peeled off by bending as shown in fig. 13B, but in this case, the peeling property is slightly poor because no peeling start is generated.

In addition, the peeling switch 91 may be constituted by an optical sensor. Further, if the peeling switch 91 is structured such that the free end Ta of the printing paper tape T is turned before entering the turning locus of the long projecting piece 78, regardless of its position and structure.

Next, the peeling operation of the printing paper tape T formed by the peeling projections 74 will be described in more detail by taking the long projection pieces 78 as examples with reference to fig. 8 and 9. As shown in fig. 8, the free end Ta of the printing tape T is held by the double-sided guide walls 81 and 81 of the peeling inlet 15 and the receiving member 83, and the long protrusion piece 78 is brought into rotary contact with the tape free end. The long projecting pieces 78 are brought into contact with the tape base a side of the printing tape T and bent as described above. Therefore, the free end Ta of the printing tape T is bent with the tape base a as the outer side and the release paper c side as the inner side. Due to the deflection of the free end Ta, as shown in fig. 9, the oblique side portion 83a of the receiving member 83 receiving the free end is curved centering on the oblique side portion, and thus the tape base a is curved largely in radius of curvature (R), and the release paper c is curved largely in radius of curvature (R). As the bending progresses, the interlayer slip between the adhesive b and the release paper c occurs, and the adhesion force of the adhesive b to the release paper c is extremely reduced.

Further, when the free end Ta is bent to the maximum, the tip of the long protrusion piece 78 is disengaged along the tip of the free end Ta, and the free end Ta is sprung up to return to the original state. At this time, the release paper c is protruded from the tape base a by the above-described interlayer slip, and the tip of the long protrusion piece 78 is first detached from the tape base a and then detached from the release paper. When the leading end of the long projecting piece 78 is detached from the tape base body a, the tape returns to the original straight state by its own elastic force and also against the sticking force of the adhesive b to the release paper c. At this time, if the elastic force of the tape base a exceeds the sticking force of the adhesive b weakened by the interlayer slip, the release paper c is peeled from the tape base a. Even when the tape is not peeled off, the peeling paper c can be peeled off from the tape base a by repeated peeling operations because the adhesive force of the adhesive b is weak.

On the other hand, after the long protruding pieces 78 are detached from the tape base a until the long protruding pieces are detached from the release paper c, the release paper c is bent more deeply than the portion of the tape base a slightly protruding. However, the free end Ta of the printing paper tape T formed by the long projecting pieces 78 is set so that the release paper c reaches the permanent deformation region within the limit of elastic deformation of the tape base a. Therefore, in the state where the deflection by the long projecting pieces 78 is released, as shown in fig. 10, the tape base a returns to the original linear state, but the release paper c does not return to the linear state, and a state with a bending defect is formed. Therefore, the release paper c once bent and peeled is not stuck again to the tape base (the adhesive b of the tape a), and the release paper c is completely peeled.

Next, embodiment 2 of the present invention will be described with reference to fig. 14 to 16. The clutch mechanism in the present embodiment is different from that in embodiment 1, and is otherwise the same. The same reference numerals are given to corresponding members, and the description thereof will be omitted.

As shown in the above figures, the clutch mechanism 200 includes the 1 st gear 201 fixed to the drive shaft 27 of the motor 21, the 2 nd gear 202 meshing with the 1 st gear 201, the output wheel 203 disposed coaxially with the 2 nd gear 202, and the clutch body 204 provided between the 2 nd gear 202 and the output wheel 203.

The 1 st gear 201 is integrally formed by a spur gear portion (output portion) 201a on the motor 21 side and a worm portion 201b on the 2 nd gear 202 side. The spur gear 201a corresponds to the gear portion 43 in embodiment 1, and the power of the motor 21 is transmitted from the spur gear 201a to the peeling mechanism 23. The 2 nd gear 202 is constituted by a worm wheel meshing with the worm part 201b, and the worm part 201b of the 1 st gear 201 and the 2 nd gear 202 constitute a worm gear. The 2 nd gear 202 is rotatably supported by a large diameter portion 205a of a shaft member 205 extending rearward from the connecting frame portion 33, and the output wheel 203 is rotatably supported by a small diameter portion 205b of the shaft member 205. The output wheel 203 corresponds to the crank wheel 56 of embodiment 1, and an eccentric pin 57 (any of which is described in detail below) is provided on one end surface as in embodiment 1.

The clutch body 204 is provided with a ratchet wheel 211 integrally formed on an end surface of the output wheel 203 on the opposite side of the eccentric pin 57, a pawl 212 attached to the 2 nd gear 202 opposite thereto, and a plate spring 213 for biasing the pawl 212 toward the ratchet wheel 211.

A pawl 212 is mounted freely rotatably at its middle portion on the end face of the 2 nd gear 202 by means of a shaft pin 214. A stopper pin 215 that engages with the front end of the pawl 212 and limits the depth of engagement of the pawl 212 with the ratchet wheel 211 is provided upright on the end surface of the 2 nd gear 202. The plate spring 213 is formed by bending a plate material which is press-cut into a predetermined shape, and is integrally formed of an arc-shaped mounting portion 213a and a spring portion 213b which extends forward from the front end of the mounting portion 213a while standing at a right angle. The mounting portion 213a is disposed along a flange portion of an end surface of the 2 nd gear 202, and is fixed to the 2 nd gear 202 in a positioned state by an embedded pin 216 and a mounting pin 217 provided upright on the end surface. The spring 213b is bent inward at a middle position, and the leading end thereof engages with the trailing end of the pawl 212 to urge the pawl 212 into engagement with the ratchet 211.

In this configuration, when the motor 21 rotates in the normal direction, the pawl 212, which is acted on by the plate spring 213, engages with the ratchet wheel 211, and transmits the rotation power of the 2 nd gear 202 to the output wheel 203, thereby rotating the 2 nd gear 202 together with the output wheel 203. When the motor 21 is rotated reversely, the pawl 212 presses the surface of the ratchet 211 against the plate spring 213 to rotate idly, and the power is cut off.

In embodiment 2 having the above-described configuration, the combination of the ratchet 211 and the pawl 212 can easily constitute a clutch mechanism for transmitting the rotational power in one direction.

The clutch mechanism 24 can be applied to various mechanical devices as a one-way clutch in addition to the electronic device.

It will be appreciated by those skilled in the art that while the foregoing has described preferred embodiments of the invention, various modifications may be made without departing from the spirit and scope of the invention.

Claims (27)

1. A peeling device for partially peeling a peeling paper from an adhesive tape comprising a tape base having one side surface coated with an adhesive and a peeling paper laminated on the tape base via the adhesive, characterized by comprising: a drive source that generates a drive force; a revolving body that is rotationally driven by power transmitted from the driving source; a peeling protrusion provided on an end surface of the rotator, and rotating and contacting with a tape base side of an end portion of the adhesive tape to deflect and release the peeling protrusion; and a holding mechanism for guiding the insertion of the adhesive paper tape toward the peeling protrusion and holding the end of the adhesive paper tape by leaving the free end adjacent to the peeling protrusion.

2. The peeling apparatus as claimed in claim 1, wherein: the peeling protrusion is continuously brought into contact with the end of the adhesive tape from the leading end to the base end of the free end of the adhesive tape.

3. The peeling apparatus as claimed in claim 1, wherein: the holding mechanism has a side guide wall for guiding the side of the end of the adhesive tape along the end face of the rotator in an inserted manner.

4. The peeling apparatus as claimed in claim 1, wherein: the holding mechanism has a pair of guide walls for guiding the adhesive tape in a manner that the adhesive tape is bent in the front-back direction with respect to the insertion direction and inserted.

5. The peeling apparatus as claimed in claim 3, wherein: the holding means is opened to the outside at a position opposed to the side guide wall.

6. The peeling apparatus as claimed in claim 4, wherein: at least one of the pair of face guide walls is provided with a bevel portion for receiving a corner portion of an end of the adhesive tape at a tip end of the face guide wall on a release paper side of the adhesive tape on the release projection side so that the corner portion becomes a free end.

7. The peeling apparatus as claimed in claim 6, wherein: the front end of the peeling protrusion is formed in parallel with the opposite bevel portion.

8. The peeling apparatus as claimed in claim 7, wherein: when the thickness of the adhesive tape is t, a gap delta between the leading end of the peeling protrusion and the bevel portion facing in parallel satisfies a condition that t is not less than delta not more than 10 t.

9. The peeling apparatus as claimed in claim 1, wherein: the separation projection is composed of a plurality of separation projection pieces arranged substantially radially on the end surface of the rotator, and the separation projection pieces are mixed with long separation projection pieces and short separation projection pieces.

10. The peeling apparatus as claimed in claim 1, wherein: and a drive control mechanism for generating a drive force by the drive source before the leading end of the adhesive tape is inserted into the rotation path of the peeling protrusion.

11. The peeling apparatus as claimed in claim 10, wherein: the drive control means detects the leading end of the adhesive tape inserted adjacent to the holding means and causes the drive source to generate a drive force.

12. A tape processing apparatus for processing a tape with a release paper, comprising: a trimming mechanism for trimming and cutting the end of the paper tape with the release paper; the peeling apparatus as claimed in claim 1, which peels the peeling paper from the paper tape with the peeling paper; a single driving mechanism for operating the trimming mechanism and the peeling device; and a power transmission mechanism for transmitting the power of the driving mechanism to the dressing mechanism and the peeling device.

13. The paper tape processing apparatus of claim 12, wherein: the power transmission mechanism is a one-way clutch having an input side fixed to the drive shaft and an output side connected to the dressing mechanism, and transmitting only the positive rotational force of the motor to the dressing mechanism.

14. The paper tape processing apparatus of claim 13, wherein: the one-way clutch is provided with: a 1 st gear fixed to the drive shaft; a 2 nd gear meshed with the 1 st gear; an output wheel which is arranged on the same shaft with the 2 nd gear and connects the output side with the trimming mechanism; and a clutch body disposed between the 2 nd gear and the output wheel and transmitting only the positive rotational force of the motor to the dressing mechanism.

15. The paper tape processing apparatus of claim 14, wherein: the clutch body is provided with: a ratchet wheel arranged on any one of the 2 nd gear and the output wheel; a pawl provided on the other side, configured to be freely rotatable, and engaged with the ratchet; a spring for biasing the pawl in the engaging direction.

16. The paper tape processing apparatus of claim 14, wherein: the dressing mechanism is provided with a crank mechanism for converting the rotation of the output wheel into reciprocating movement, and a cutter for performing cutting operation by the reciprocating movement of the crank mechanism.

17. The paper tape processing apparatus of claim 14, wherein: the 1 st gear further includes an output unit for transmitting the rotating power of the motor in forward and reverse rotation to the peeling device.

18. The paper tape processing apparatus of claim 13, wherein: the one-way clutch includes an input-side phase ratchet fixed to the drive shaft and an output-side phase ratchet supported on the drive shaft so as to be rotatable and slidable in the axial direction.

19. The paper tape processing apparatus of claim 18, wherein: the output side phase ratchet wheel is provided with a worm on the output side, and the input side of the trimming mechanism is provided with a worm wheel meshed with the worm; an adhesive for rotating the worm in conjunction with the drive shaft is disposed between the drive shaft and the worm.

20. The paper tape processing apparatus of claim 19, wherein: and a stopper for restricting the axial movement of the worm while maintaining the engagement between the worm and the worm wheel in a state where the engagement between the input-side phase ratchet and the output-side phase ratchet is released.

21. The paper tape processing apparatus of claim 19, wherein: the dressing mechanism is provided with a crank mechanism for converting the rotation of the worm wheel into reciprocating movement, and a cutter for performing cutting operation by the reciprocating movement of the crank mechanism.

22. The paper tape processing apparatus of claim 18, wherein: the input-side phase ratchet further includes an output unit for transmitting the rotating power of the motor in the forward and reverse directions to the peeling device.

23. The paper tape processing apparatus of claim 12, wherein: a device housing having a trimming guide opening for guiding the inserted paper tape with the release paper to the trimming mechanism and a peeling guide opening for guiding the paper tape to the peeling device; the dressing guide opening and the peeling guide opening are disposed adjacent to each other.

24. The paper tape processing apparatus of claim 23, wherein: the tape inserting direction of the tape-peeling paper is different between the trimming guide opening and the peeling guide opening.

25. The paper tape processing apparatus of claim 12, wherein: and a forward rotation control mechanism for detecting the paper tape inserted into the trimming guide opening and rotating the motor forward.

26. The paper tape processing apparatus of claim 12, wherein: and a reverse control mechanism for detecting the paper tape inserted into the peeling guide opening and reversing the motor.

27. A paper tape printing device which can use a paper tape with a release paper is characterized in that: the device is composed of the following mechanisms: a printing mechanism for printing on the paper tape with the release paper; a cutter mechanism for cutting the paper tape with the release paper into a predetermined length; a paper tape conveying mechanism for conveying the paper tape printed by the printing mechanism to the outside by making the paper tape with the release paper close to the cutter mechanism; and a tape processing apparatus for processing the tape cut into the predetermined length with the release paper, wherein the tape processing apparatus comprises a trimming mechanism for shaping and cutting an end portion of the tape cut into the predetermined length with the release paper, the peeling apparatus as set forth in claim 1 for peeling the release paper from the tape cut into the predetermined length with the release paper, a single driving mechanism for operating the trimming mechanism and the peeling apparatus, and a power transmission mechanism for transmitting a power of the driving mechanism to the trimming mechanism and the peeling apparatus.