JP7442987B2 - Tape cutter - Google Patents

Description

The present invention relates to a tape cutter that cuts an end of a tape pulled out from a wound tape such as an adhesive tape.

Conventionally, there has been a clip-type method in which a first holding part and a second holding part hold an arbitrary part of an annularly wound adhesive tape, and then cut the end of the tape to an arbitrary length. A tape cutter is known (for example, Patent Document 1).

The tape cutter disclosed in the above-mentioned Patent Document 1 has an arc-shaped upper surface of a blade stopper included in the first clamping part attached to the outer circumferential surface of the tape, and the first clamping part and the second clamping part are connected to each other. It is configured so that the tape can be clamped and the end of the tape can be cut from this state with a cutter blade attached to a blade stopper.

Japanese Patent Application Publication No. 2018-162150

However, in the tape cutter disclosed in Patent Document 1, the tip of the cutter blade is set to be close to the outer peripheral surface of the tape with respect to the blade stopper, so the tip of the tape on the winding side after cutting is It easily adhered to the outer peripheral surface of the tape. For this reason, when the tape end is pulled out by pinching the tip of the tape end for the next use, it is difficult to pinch the tip of the tape end, resulting in a problem that the tape is not easy to use.

The present invention has been made in view of the above circumstances, and provides a tape that is easier to use by making it easier to pinch the tip of the tape on the winding side after cutting and pulling out the end of the tape. The purpose is to provide cutters.

A tape cutter according to the present invention is a tape cutter that cuts an end of a tape pulled out from a wound tape, and includes a cutter body disposed on the outer circumferential side of the tape, and a cutter body rotatably supported by the cutter body. and a clamping part disposed on the inner circumferential side of the tape to sandwich the tape in cooperation with the cutter body from a side surface of the tape, and urging the clamping part to rotate toward the cutter body. a biasing member; a first convex portion provided on the side of the cutter body facing the tape, protruding toward the tape and extending generally in the width direction of the tape; and the tape of the cutter body. a second protrusion that is provided at a position opposite to the first protrusion in the circumferential direction of the tape, protrudes toward the tape and extends substantially in the width direction of the tape; The first protrusion includes a first contact portion that contacts the outer peripheral surface of the tape, and a first contact portion that extends from the first contact portion in a direction away from the tape and that extends toward the end of the tape. a first tape end contact surface that can be contacted by the second convex portion, and the second convex portion includes a second contact portion that contacts the outer peripheral surface of the tape; a second tape end contact surface that extends in a direction away from the tape and that the tape end can contact, the tape end being cut at the tip of the first tape end contact surface; A serrated first blade portion is provided, a serrated second blade portion for cutting the tape end portion is provided at the tip of the second tape end contact surface, and the first serrated blade portion is provided at the tip of the second tape end contact surface. The blade portion and the second blade portion are characterized in that the roughness of the blades is different.

With this configuration, when the tape cutter according to the present invention pinches the tape between the cutter body and the pinching part, the tape cutter cuts the end of the tape with the first blade part while holding the tape from one side surface. It is used in either a used state or a second used state in which the tape is held from the other side surface and the end of the tape is cut by the second blade.

In the first usage state, when the pulled-out tape end is cut by the first blade part with the tape end in contact with the first tape end contact surface, the tape on the winding side after cutting is cut by the first tape. The tip that was in contact with the end contact surface separates from the tape and becomes a knob that does not adhere to the outer peripheral surface of the tape. Therefore, when the tape is used next time, the tip of the tape can be easily pinched and the end of the tape can be easily pulled out, which improves usability.

In addition, in the second usage state, when the pulled out tape end is cut by the second blade part while in contact with the second tape end contact surface, the tape on the winding side after cutting is cut by the second blade part. The tip, which was in contact with the tape end contact surface, separates from the tape and becomes a knob that does not adhere to the outer circumferential surface of the tape. Therefore, when the tape is used next time, the tip of the tape can be easily pinched and the end of the tape can be easily pulled out, which improves usability.

The usage conditions mentioned above are selected depending on the type of tape (for example, different thicknesses, hardness, etc.) and intended use. If you want to cut with fine grain, use the blade with finer roughness. That is, according to the tape cutter of the present invention, the roughness of the cut edge of the tape can be selected from two types.

Further, in the tape cutter according to the present invention, the first contact portion of the first convex portion includes a first corner portion that contacts the outer peripheral surface of the tape in a substantially line contact state, and the second The second abutting portion of the convex portion includes a second corner portion that abuts the outer circumferential surface of the tape in a substantially linear contact state.

With this configuration, the tape cutter according to the present invention can be attached to the tape at two points by bringing the first corner and the second corner separated in the circumferential direction of the tape into contact with the outer peripheral surface of the tape. The tape is supported and stabilized, making it easier to cut the tape. In addition, the tape is in a state in which the first corner and the second corner are subjected to a crease process, so that the tip of the tape after cutting, which serves as the knob margin, is in a bent state away from the outer circumferential surface of the tape. becomes easier to retain.

According to the present invention, the tip of the wound tape after being cut can be easily pinched and the end of the tape can be easily pulled out, thereby improving usability.

1 is a perspective view showing a tape cutter according to a first embodiment of the present invention set on a tape; FIG. FIG. 2 is a perspective view showing a state in which the tape cutter according to the first embodiment of the present invention is opened with fingers. FIG. 1 is a plan view of a tape cutter according to a first embodiment of the present invention. 4 is a view taken along the IV arrow in FIG. 3. FIG. It is a bottom view of the tape cutter concerning a 1st embodiment of the present invention. 4 is a view taken along the VI arrow in FIG. 3. FIG. FIG. 4 is a cross-sectional view of a portion corresponding to the VII-VII arrow direction in FIG. 3, showing the action when cutting the tape end with the first blade of the tape cutter according to the first embodiment of the present invention. be. FIG. 3 is a cross-sectional view of the tape after the end portion of the tape has been cut by the tape cutter according to the first embodiment of the present invention. It is a top view of the tape cutter based on 2nd Embodiment of this invention. FIG. 9 is a view taken along the X arrow in FIG. 9; It is a bottom view of the tape cutter based on 2nd Embodiment of this invention. FIG. 9 is a view taken along arrow XII in FIG. 9; 9 is a cross-sectional view of a portion corresponding to the XIII-XIII arrow in FIG. be. It is a perspective view which shows the state where the tape cutter based on 2nd Embodiment of this invention is set on the tape. FIG. 7 is a cross-sectional view of a tape after the end portion of the tape has been cut with a tape cutter according to a second embodiment of the present invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
In FIGS. 1 to 7, reference numeral T1 indicates a clip-type tape cutter according to the first embodiment of the present invention. As shown in FIG. 1, the tape cutter T1 according to the present embodiment sets a tape 10 such as an adhesive tape wrapped in an annular shape around the outer periphery of a winding core 13 to the tape 10 in a state where the tape 10 is sandwiched together with the winding core 13. The tape end 10a pulled out from the tape 10 can be cut. The tape 10 according to the present embodiment is an adhesive tape or the like that has an adhesive layer on the inner peripheral surface side in a wound state, and its type is not limited.

First, the configuration of the tape cutter T1 will be explained.

The tape cutter T1 according to the first embodiment includes a cutter body 1 disposed on the outer circumference side of the tape 10, and a cutter body 1 rotatably supported by the cutter body 1 and disposed on the inner circumference side of the tape 10. A clamping part 2 that cooperates with the cutter body 1 from the side to sandwich the tape 10, a coil spring 3 that urges the clamping part 2 to rotate toward the cutter body 1, and a side of the cutter body 1 facing the tape 10. a first convex portion 11 provided on the side of the cutter body 1 facing the tape 10 and protruding toward the tape 10 and extending substantially in the width direction of the tape 10; A second convex portion 12 is provided at a position spaced apart in the circumferential direction of the tape 10, protrudes toward the tape 10, and extends substantially in the width direction of the tape 10.

The cutter body 1 is a rectangular plate-shaped member. Moreover, the holding part 2 is a rectangular plate-shaped member, and has a crank-shaped shape bent in the thickness direction as shown in FIG. The cutter main body 1 and the holding part 2 are obtained by molding resin, for example, but the material is not limited to resin.

As shown in FIGS. 4 and 6, the cutter body 1 has a knob 1a and a pair of hinge pieces 1b at one end, and the clamping part 2 has a knob 2a and a pair of hinge pieces 2b at one end. has. The cutter body 1 and the holding part 2 are rotatably connected via a hinge shaft 4 inserted through the hinge pieces 1b and 2b.

The coil spring 3 is, for example, a torsion coil spring or the like, and constitutes the biasing member of the present invention. The coil spring 3 is mounted on the hinge shaft 4 and supported between the knobs 1a and 2a. Note that the biasing member of the present invention is not limited to the coil spring 3, but may be of any form as long as it biases the holding portion 2 to rotate toward the cutter body 1 side.

As shown in FIG. 2, the tape cutter T1 according to the present embodiment separates the clamping part 2 from the cutter body 1 by pinching the gripping parts 1a and 2a from the outside against the biasing force of the coil spring 3. It is designed so that it can be rotated to Then, when the knobs 1a and 2a are released, the clamping part 2 relatively rotates toward the cutter body 1 side due to the biasing force of the coil spring 3 and closes as shown in FIG. 4, whereby the cutter body 1 and the clamping part 2, the tape 10 and the winding core 13 can be held between them.

As shown in FIG. 3, the cutter body 1 has an edge 1c on one side and an edge 1d on the other side that extend in the longitudinal direction.

As shown in FIG. 7, the edge 1c of the cutter body 1 has the first convex portion 11 described above. Further, the edge portion 1d of the cutter body 1 has the second convex portion 12 described above.

As shown in FIG. 7, the first convex portion 11 has a substantially trapezoidal cross section. The first convex portion 11 has a first abutting portion 11A that abuts the outer circumferential surface 10b of the tape 10 on its inner edge. The first contact portion 11A includes a first corner portion 11a that contacts the outer circumferential surface 10b of the tape 10 in a substantially linear contact state. The first corner 11a has a triangular cross-section, and the angle at its apex is preferably in the range of 60° to 120°, for example, and more preferably an acute angle.

Further, the first convex portion 11 extends diagonally outward from the first corner 11a of the first contact portion 11A while being spaced from the outer peripheral surface 10b of the tape 10, so that the tape end 10a can come into contact with the first convex portion 11. It includes a first upwardly inclined bottom surface 11b. The first upwardly inclined bottom surface 11b constitutes the first tape end contact surface of the present invention.

In the first convex portion 11, a first blade portion 11B for cutting the tape end portion 10a is provided at the tip of the first upwardly inclined bottom surface 11b. The first blade portion 11B is integrally molded with the cutter body 1. For example, if the cutter body 1 is made of resin, the first blade portion 11B is also made of resin. The first blade portion 11B is not integrally formed with the cutter body 1, but may be made of a thin metal plate, for example, and may be fixed to the cutter body 1 by adhesive or other means.

As shown in FIG. 5, the first blade portion 11B is specifically composed of a jagged blade in which a large number of triangular blades are formed in a sawtooth shape.

As shown in FIG. 7, the second convex portion 12 has a substantially rectangular cross section whose thickness decreases slightly toward the tip, and has a substantially rectangular cross-section that is formed on the outer circumferential surface 10b of the tape 10. It has a tape contacting surface 12c consisting of a circular arc surface along the same direction.

Next, an example of how to use and the effect of the first embodiment will be described.

To use the tape cutter T1, first, as shown in FIG. 2, open the holding part 2 by separating it from the cutter body 1 with the knobs 1a and 2a in between. As shown in FIG. 1, the first blade portion 11B is directed toward the tape end 10a to be cut, the cutter body 1 is placed on the outer circumferential side of the tape 10, and the clamping portion 2 is placed on the inner circumferential side of the tape 10. The tape 10 and the winding core 13 are sandwiched from one side surface 10c of the tape 10 and set on the tape 10 so that the tape 10 and the winding core 13 are arranged.

When setting the tape cutter T1 on the tape 10 in this manner, the length from the first blade portion 11B to the tip edge of the tape end portion 10a is set to be the cutting length. As shown in FIG. 7, in the tape cutter T1 set on the tape 10, the first corner portion 11a on the first convex portion 11 side is in approximately line contact with the outer peripheral surface 10b of the tape 10, and On the convex portion 12 side of No. 2, the tape abutting surface 12c abuts against the outer circumferential surface 10b of the tape 10.

Next, the surface of the root portion (the portion rising from the outer peripheral surface 10b of the tape 10) of the tape end 10a that has been peeled off and pulled out from the tape 10 is placed on the first upwardly inclined bottom surface 11b of the cutter body 1 as shown in FIG. From this state, the tape end 10a is lifted upward and applied to the first blade 11B and pulled, thereby cutting the tape end 10a with the first blade 11B in a tearing manner.

According to the tape cutter T1 according to the first embodiment, the pulled-out tape end 10a is cut by the first blade portion 11B while being in contact with the first upwardly inclined bottom surface 11b. As a result, as shown in FIG. 8, the tip 10e of the tape 10 on the winding side after cutting, which was in contact with the first upwardly inclined bottom surface 11b, is separated from the tape 10 and attached to the outer circumferential surface 10b of the tape 10. It will be a pinch fee if you don't. Therefore, the tip end 10e of the tape 10 can be easily pinched during the next use, and the tape end 10a can be easily pulled out, resulting in improved usability.

Further, according to the tape cutter T1 according to the first embodiment, the tape 10 is subjected to a crease pressing process by the first corner portion 11a, and therefore, the tip of the tape 10 after cutting, which becomes the knob margin. 10e can be easily maintained in a bent state away from the outer circumferential surface 10b of the tape 10. As shown in FIG. 7, the creasing process by the first corner 11a is preferably performed at an angle as large as possible if the rising angle θ1 of the first upwardly inclined bottom surface 11b is within this range, for example, about 15° to 60°. can be effectively obtained. Note that the rising angle θ1 in this case is an extension of a line connecting the inner edge 12d of the second protrusion 12 that contacts the outer peripheral surface 10b of the tape 10 and the first corner 11a of the first protrusion 11. This refers to the angle between L1 and the first upwardly inclined bottom surface 11b.

(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. 9 to 15. The second embodiment differs from the first embodiment described above in that the form of the second convex portion 12 of the cutter body 1 is different, and the second convex portion 12 is provided with a second blade portion 12B. The second embodiment differs in this point, and other configurations other than these are the same as the first embodiment. Therefore, in the following explanation, the differences from the first embodiment will be mainly explained, and the explanation of the same configuration as the first embodiment will be omitted.

Reference numeral T2 in FIGS. 9 to 14 indicates a tape cutter according to the second embodiment of the present invention. The tape cutter T2 according to the second embodiment is provided on the side of the cutter main body 1 facing the tape 10 at a position spaced apart from the first convex portion 11 in the circumferential direction of the tape 10, and protrudes toward the tape 10. At the same time, it is provided with a second convex portion 12 extending substantially in the width direction of the tape 10.

As shown in FIG. 13, the second convex portion 12 in the second embodiment is formed to have a substantially trapezoidal cross section. Contrary to FIG. 7, FIG. 13 shows a cross section with the second protrusion 12 on the right side and the first protrusion 11 on the left side.

The second convex portion 12 in the second embodiment has a second contact portion 12A that contacts the outer circumferential surface 10b of the tape 10 on its inner edge. The second contact portion 12A includes a second corner portion 12a that contacts the outer circumferential surface 10b of the tape 10 in a substantially linear contact state. The second corner 12a has a triangular cross-section, and the angle at its apex is preferably in the range of 60° to 120°, for example, and more preferably an acute angle, similar to the first corner 11a described above.

Further, the second convex portion 12 extends diagonally outward from the second corner 12a of the second contact portion 12A while being spaced apart from the tape 10, and has a second convex portion 12 that can be contacted by the tape end 10a. It includes an upwardly inclined bottom surface 12b. The second upwardly sloped bottom surface 12b constitutes the second tape end contact surface of the present invention.

In the second convex portion 12, a second blade portion 12B for cutting the tape end portion 10a is provided at the tip of the second upwardly inclined bottom surface 12b. The second blade part 12B is molded integrally with the cutter body 1 similarly to the first blade part 11B. Note that the second blade portion 12B may also be formed of a thin metal plate, for example, instead of being integrally molded with the cutter body 1, and may be fixed to the cutter body 1 by adhesive or other means.

As shown in FIG. 11, the second blade part 12B is composed of a jagged blade in which a large number of triangular blades are formed in a sawtooth shape, similar to the first blade part 11B, but unlike the first blade part 11B, The roughness, that is, the height of the blade, the depth of the groove, and the pitch of the blade are different. Specifically, the second blade part 12B is a jagged blade with finer mesh than the first blade part 11B, and has a smaller blade height and blade groove depth than the first blade part 11B. The pitch is fine.

Hereinafter, an example of how to use and the effect of the second embodiment will be described.

In the tape cutter T2 according to the second embodiment, when the tape 10 and the core 13 are held between the cutter body 1 and the holding part 2, the tape 10 is held from one side surface 10c and the first blade part 11B is used to hold the tape 10 and the core 13. In the first usage state (see FIG. 1) in which the tape end 10a is cut, and as shown in FIG. It is used in any of the second usage states in which the tape end 10a is cut at 12B.

In the first usage state, similarly to the first embodiment described above, the surface of the root portion of the tape end 10a pulled out from the wound tape 10 is in contact with the first upwardly inclined bottom surface 11b. Cutting is performed using the blade portion 11B of No. 1. As a result, in the tape 10 on the winding side after cutting, the tip 10e of the tape 10 that was in contact with the first upwardly inclined bottom surface 11b is separated from the outer circumferential surface 10b, and becomes a knob margin that does not adhere to the outer circumferential surface 10b. (See Figure 8).

In the second usage state shown in FIG. 14, the surface of the root portion of the tape end 10a pulled out from the wound tape 10 is in contact with the second upwardly inclined bottom surface 12b, as shown in FIG. Then, it is cut by the second blade portion 12B. As a result, as shown in FIG. 15, in the tape 10 on the winding side after cutting, the tip 10e of the tape 10 that was in contact with the second upwardly inclined bottom surface 12b is separated from the outer circumferential surface 10b and becomes attached to the outer circumferential surface 10b. It becomes a knob that does not stick.

Therefore, in both the first and second usage states, after cutting the tape end 10a, the tip 10e of the tape 10 can be easily pinched and the tape end 10a can be easily pulled out during the next use. This improves usability.

The above-mentioned first and second usage conditions are selected depending on the type of tape (for example, different thicknesses, hardness, etc.) and intended use. The blade part 11B is used for cutting, and when a fine cut is desired, the second blade part 12B is used for cutting. For example, when cutting with the first blade part 11B, the cut edge of the tape end 10a becomes a clear jagged cut, and when cutting with the second blade part 12B, the cut edge of the tape end 10a has a substantially linear shape with a series of fine jags. Become. That is, according to the tape cutter T2 according to the second embodiment, the roughness of the cutting edge of the tape end 10a can be selected from two ways.

Further, as shown in FIG. 13, in the tape cutter T2 set on the tape 10, the first corner 11a on the first convex portion 11 side is in approximate line contact with the outer peripheral surface 10b of the tape 10. , on the second convex portion 12 side, the second corner portion 12a abuts the outer circumferential surface 10b of the tape 10 in a substantially linear contact state. In this way, the first corner 11a and the second corner 12a, which are spaced apart in the circumferential direction of the tape 10, come into contact with the outer circumferential surface 10b of the tape 10, so that the tape 10 is attached to the tape 10 in a two-point supported state. As a result, the tape end 10a can be easily cut.

Further, according to the tape cutter T2 according to the second embodiment, the tape 10 is in a state where the first corner portion 11a and the second corner portion 12a are subjected to a crease pressing process, which becomes a knob margin. The tip end 10e of the tape 10 after cutting is easily maintained in a bent state separated from the outer circumferential surface 10b of the tape 10.

As shown in FIG. 13, in the creasing process using the second corner portion 12a, the rising angle θ2 of the second upwardly inclined bottom surface 12b is, for example, 15° to 60°, similar to the first upwardly inclined bottom surface 11b described above. As long as the angle is within this range, preferably the angle is as large as possible to effectively obtain the angle. The rising angle θ2 here is an extension of a line connecting the first corner 11a of the first convex portion 11 and the second corner 12a of the second convex portion 12 that contact the outer circumferential surface 10b of the tape 10. This refers to the angle between the line L2 and the second upwardly inclined bottom surface 12b.

Although the present invention can be applied to various types of adhesive tapes, it is particularly suitable for paper adhesive tapes that tend to maintain their folded state, such as masking tapes.

Advantageous Effects of the Invention The present invention improves ease of use by making it easier to pinch the tip of the wrapped tape after cutting, such as an adhesive tape, to easily pull out the end of the tape. The present invention can provide a tape cutter, and is useful in general for clip-type tape cutters that are used to hold tape.

1 Cutter body 1a, 2a Knob part 1c, 1d Edge part 2 Clamping part 3 Coil spring (biasing member)
10 Tape 10a Tape end 10b Tape outer circumferential surface 10c Tape side surface 10e Tape tip 11 First convex portion 11A First contact portion 11B First blade portion 11a First corner portion 11b First upward slope Bottom surface (first tape end contact surface)
12 Second convex portion 12A Second contact portion 12B Second blade portion 12a Second corner portion 12b Second upwardly inclined bottom surface (second tape end contact surface)
13 Core T1, T2 Tape cutter

Claims (2)

A tape cutter that cuts an end of a tape pulled out from a wrapped tape,
a cutter body disposed on the outer peripheral side of the tape;
a clamping part rotatably supported by the cutter body and disposed on the inner peripheral side of the tape, cooperating with the cutter body from a side surface of the tape to sandwich the tape;
a biasing member that biases the holding portion to rotate toward the cutter body;
a first convex portion provided on a side of the cutter body facing the tape, protruding toward the tape and extending substantially in the width direction of the tape;
Provided on the side of the cutter main body facing the tape and at a position spaced apart from the first convex portion in the circumferential direction of the tape, protruding toward the tape and extending generally in the width direction of the tape. a second convex portion,
The first convex portion includes a first contact portion that contacts the outer circumferential surface of the tape, and extends in a direction away from the first contact portion with respect to the tape so that the end portion of the tape can come into contact with the first convex portion. a first tape end contact surface;
The second convex portion includes a second contact portion that contacts the outer peripheral surface of the tape, and a second contact portion that extends in a direction away from the tape so that the end portion of the tape can come into contact with the second convex portion. a second tape end contact surface;
A serrated first blade portion for cutting the tape end portion is provided at the tip of the first tape end contact surface,
A serrated second blade portion for cutting the tape end portion is provided at the tip of the second tape end contact surface,
A tape cutter , wherein the first blade portion and the second blade portion have different blade roughness . The first contact portion of the first convex portion includes a first corner portion that contacts the outer peripheral surface of the tape in a substantially line contact state,
The tape cutter according to claim 1 , wherein the second contact portion of the second convex portion includes a second corner portion that contacts the outer peripheral surface of the tape in a substantially linear contact state.

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