JP2913382B2 - Adhesive tape cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive tape cassette for storing and holding a tape roll of an adhesive tape used for an automatic envelope sealing device and the like.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Unexamined Patent Publication No. 7-025197
Japanese Patent Application Laid-Open Publication No. H11-163873 discloses a device for automatically attaching an envelope, in which a roll of adhesive tape is fitted to a detachable reel and rotatably attached to a shaft fixed to a tape container. It has been disclosed. The container is fixed to the transfer table, and the leading end of the roll is drawn out between a guide provided in the container and the holding plate.

[0003]

In the above-mentioned conventional apparatus, the adhesive surface side of the adhesive tape is in contact with the holding plate, and when the tape is pulled out, the adhesive sticking out of the guide and the tip of the holding plate. I hold the tape and pull it out,
A force for peeling the adhesive between the holding plate and the adhesive surface of the adhesive tape and a force for pulling out the adhesive tape are required, and a considerably large force is required. As described above, when the load of pulling out the tape is large, a large driving source is required as a driving force for gripping and pulling out, and there is a problem that a cost is increased and a working speed is reduced.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to an adhesive tape cassette containing a roll of adhesive tape, which is installed in an automatic envelope sealing device or the like.
A pair of tape guards to facilitate tape withdrawal
A guide plate is provided, and a guide roller is provided on the tape guide plate so as to be in contact with the adhesive surface side of the adhesive tape, and the guide roller is configured to facilitate peeling of the adhesive surface. A driving force for gripping and pulling is reduced by a small driving source, and an increase in cost and a reduction in working speed are prevented.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a storage chamber for rotatably storing a tape roll in which an adhesive tape is wound, and a pair of tapes near an outlet of the adhesive tape drawn out of the storage chamber. Guide plate swings and faces each other
Clamping surfaces are provided so as to be urged toward each other . A guide roller for facilitating peeling of the adhesive surface is provided on one tape guide plate of the pair of tape guide plates where the adhesive surface side of the adhesive tape contacts.

[0006] It is preferable that the outer peripheral surface of the guide roller is constituted by an uneven surface. Further, it is preferable that one tape guide plate is formed with a protrusion for regulating the displacement of the adhesive tape, and a plurality of small protrusions for reducing the contact area with the adhesive surface of the adhesive tape are formed on the surface. This is preferable from the viewpoint of reducing the load. Further, during passage adhesive tape is pulled out from the tape roll, and this that another guide roller non-adhesive side of the adhesive tape in contact is provided is preferable from the viewpoint of smoothly drawer.

In the adhesive tape cassette constructed as described above, the guide roller provided on one of the guide plates works so that the adhesive surface of the adhesive tape can be easily peeled off, thereby reducing the load when the tape is pulled out. When the outer peripheral surface of the guide roller is an uneven surface, the configuration is simple. Providing a projection or a small projection on one of the guide plates regulates the displacement of the adhesive tape to be pulled out, and also prevents adhesion to the guide plate. And
Providing another guide roller with which the non-adhesive surface side of the adhesive tape is in contact is useful for reducing the load when the adhesive tape is pulled out when the drawing path of the adhesive tape is not straight.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the adhesive tape cassette of the present invention will be described with reference to the drawings. First, as shown in FIGS. 1 and 2, the tape cassette 1 is provided with an attachment lever 1d having a locking claw 1c provided at an intermediate portion thereof on an outer peripheral wall 1b surrounding a storage chamber 1a for the adhesive tape. The cassette is easily attached to and detached from the sealing device. A central shaft 1e is integrally provided upright at the center of the storage chamber 1a. A tape holder 2 is detachably and rotatably provided on the center shaft 1e. A rib 2 a protrudes from the outer peripheral surface of the tape holder 2, and a commercially available tape roll 3 is fitted to the rib 2 a via a roll core 4 in a pressed state.

The lower right corner of the tape cassette 1 (shown in FIG. 1)
The outlet 1f for pulling out the adhesive tape T from the tape roll 3 is located at the position. That is, a cassette lid 1g is disposed at a predetermined distance from the bottom surface of the cassette at the outlet 1f, and the guide roller 5 is supported by the bottom surface of the cassette and the cassette lid 1g. The shafts 6a and 7a for swingably supporting the shaft 7 are supported. The tape guide plate 6 is urged counterclockwise by a spring 6b, and the tape guide plate 7 is urged clockwise by a spring 7b. The spring force of the spring 7b is
The spring force is set to be larger than b. In the vicinity of the center of swing of the tape guide plate 7, a stud projection 7c is provided, which engages with a protrusion 1h provided on the tape cassette, thereby preventing the rotation force of the tape guide plate 7 by the spring 7b. It has become. Recesses 6c (shown in FIGS. 2 and 4) are provided at the distal end portions of both tape guide plates 6 and 7 in order to easily hold the adhesive tape T.

FIG. 3 shows details of the holding surface of the adhesive tape T between the tape guide plates 6 and 7. Since the non-adhesive surface of the adhesive tape is in contact with the sandwiching surface of the guide plate 7, the guide plate 7 has a planar shape, and a bent portion 7d is formed at the upper end thereof to guide the upper side of the tape. Since the adhesive surface of the adhesive tape is in contact with the holding surface of the guide plate 6, a plurality of small projections 6d are formed to reduce the contact area with the adhesive surface, and the height is high along the upper and lower edges. The protrusions 6e are arranged to guide the upper side and the lower side of the tape.

A stopper 8 is formed on the bottom of the cassette. The cassette lid 1g supports the guide roller 5 and, at the same time, supports the pin 9a and the shaft 7a that swingably support the cutter 9 and the tape guide plate 7. The cutter 9 cuts a protruding end of the adhesive tape T drawn from the tape roll 3 from the tape guide plates 6 and 7 to a predetermined length m (shown in FIG. 6).

FIGS. 4 and 5 show one tape guide plate 6 in an enlarged manner. Tape guide plate 6 is adhesive tape T
A guide roller 10 is rotatably provided at an intermediate portion of the tape guide plate 6, and elastically contacts the tape guide plate 7 via the guide roller to hold the adhesive tape T therebetween. ing. The outer peripheral surface of the guide roller 10 is formed of an uneven surface having a shape in which abacus balls are arranged in the axial direction, and has fine shaft portions 10a integrally protruding at both upper and lower ends.
On the tape guide plate 6 side, a bearing 6f for bearing the thin shaft portion 10a is formed, and the guide roller 10 is rotatably supported by the bearing 6f. As shown in FIG. 5, the tape guide plate 6 is in the shape of a letter "H", and the guide roller 10 is located at the bent part of the letter "H". Reinforcing ribs 6h and 6i are formed on both surfaces between the bent portion and a shaft hole 6g through which the shaft 6a passes.

In order to set the tape roll 3 in the tape cassette 1, the adhesive tape T is pulled out from the tape roll 3, and mounted on the tape holder 2 via the roll core 4, and the tape holder 2 is attached to the tape cassette 1. is fitted to a central axis 1e, tape cassette 1 tape roll 3
In the storage room 1a. The pulled-out adhesive tape T is wrapped around the guide roller 5 as shown in FIG. 6, and the non-adhesive surface of the adhesive tape T is in contact with the guide roller 5 at this time.

Next, the tape guide plate 6 is swung clockwise around the shaft 6a against the spring 6b so that a gap is provided between the tape guide plate 6 and the guide plate 7, and the leading end of the adhesive tape T is inserted into the gap. The tape guide plate 6 is returned to the original position after the portion is made to protrude by passing between the opposing holding surfaces of the tape guide plates 6 and 7. Thereby, the non-adhesive surface of the adhesive tape T is pressed against the holding surface of the tape guide plate 7 in a state where the adhesive surface side of the adhesive tape T is in contact with the guide roller 10, and the adhesive surface side of the adhesive tape T faces the small protrusions 6 d. The guide plates 6 and 7 are in a state of protruding from the distal ends.

In a state where the protruding end of the adhesive tape T is pulled, as shown in FIG. 6, the tape guide plate 7 is positioned so as to be prevented from further retreating by the stopper 8, so that the cutter 9 is moved to the pin 9a. The cutter 9 is swung to the center, moved from the retracted position of the cutter (shown in FIG. 1) to the cutting position (shown in FIG. 6), and cuts the tape T protruding at the tip of the cutter 9. At the cutting position of the cutter 9, the distance between the tip of the cutter and the tip of the guide plate 7 is set to m, so that the length of the adhesive tape T protruding from the guide plate is always equalized to the uniform length m. This becomes the initial position, and enables the adhesive tape T to be stably gripped under uniform conditions.

[0016]

The present invention is embodied in the form described above and has the following effects. One of the tape guide plate disposed in the outlet to draw the adhesive tape, the guide rollers in contact against the adhesive surface of the adhesive tape is provided, since the the guide rollers and configuration to facilitate separation of the adhesive surface, in such sealing device This adhesive tape cassette
Bets it is possible to reduce the load during the withdrawal of the tape by the apparatus when set, to achieve a reduction in cost driving force of the gripping drawer as requiring a small driving source,
Work speed can be improved.

By making the outer peripheral surface of the guide roller an uneven surface, peeling can be easily performed with a simple configuration. By providing a projection or a small projection on one of the guide plates, displacement of the adhesive tape to be pulled out can be regulated, and adhesion to the guide plate can be prevented, so that the drawer can be smoothly drawn. By providing another guide roller with which the non-adhesive side of the adhesive tape is in contact, even if the adhesive tape withdrawal path is not straight, the direction can be easily changed, and the load at the time of withdrawal can be reduced. Can be.

[Brief description of the drawings]

FIG. 1 is an enlarged plan view showing a state in which a tape roll is mounted on a tape cassette.

FIG. 2 is a front view of the tape cassette of FIG.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG. 1;

FIG. 4 is an enlarged front view showing a holding surface of one tape guide plate.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a plan view showing a state in which a protruding end of the adhesive tape in FIG. 1 is cut.

[Explanation of symbols]

 T Adhesive tape 1 Tape cassette 1a Storage chamber 1f Exit of adhesive tape 3 Tape roll 5 Guide roller 6 with non-adhesive side contacting 6d Small projection 6e Projection 10 Guide roller with adhesive side contact

Claims (5)

(57) [Claims] An accommodating chamber for rotatably accommodating a tape roll in which the adhesive tape is wound, wherein a pair of tape guide plates swing near an outlet of the adhesive tape drawn out of the accommodating chamber. Movable and opposed clamping surfaces
Are provided so as to be urged toward each other , and one of the pair of tape guide plates, on which the adhesive surface side of the adhesive tape is in contact, facilitates peeling of the adhesive surface. An adhesive tape cassette provided with a guide roller. 2. The adhesive tape cassette according to claim 1, wherein the guide roller has an outer peripheral surface formed of an uneven surface. 3. The adhesive tape cassette according to claim 1, wherein the one tape guide plate is provided with a projection for restricting the displacement of the adhesive tape. 4. The method according to claim 1, wherein a plurality of small protrusions are formed on the surface of the one tape guide plate to reduce a contact area with the adhesive surface of the adhesive tape. Characteristic adhesive tape cassette. 5. A guide roller according to any one of claims 1 to 4, wherein another guide roller with which the non-adhesive surface side of the adhesive tape is in contact is provided in a passage through which the adhesive tape is drawn from the tape roll. And adhesive tape cassette.