JP2020099601A - Binding band cutting tool - Google Patents

Abstract

To provide a binding band cutting tool by which a binding work by a binding band can be efficiently performed.SOLUTION: A binding band cutting tool comprises a pair of cutting blades 5 of which blade tips 6 can approach and separate from each other, and cuts a binding band 50 by causing the blade tips 6 to approach each other. A recessed part 11, which has a width dimension W2 which is a width dimension W1 of the binding band 50 or more, is formed on one blade tip 6 of the pair of cutting blades 5. A projection 12, which has a shape along a shape of the recessed part 11 so as to fit in the recessed part 11 when the blade tips 6 approach each other, is formed on the other blade tip 6 of the pair of cutting blades 5. The recessed part 11 and the projection 12 are so shaped as to be capable of cutting the binding band 50 so that a corner part is not formed at a cut end part of the binding band 50 by fitting of the projection 12 into the recessed part 11.SELECTED DRAWING: Figure 2

Description

The present invention relates to a cable tie cutting tool.

For example, a binding band used for binding a plurality of cables and the like includes a band-shaped band portion and a head portion provided at one end of the band portion (see, for example, Patent Document 1). When performing a bundling operation with such a binding band, the other end of the band portion is inserted into the insertion hole formed in the head portion and pulled, so that the locking claws formed in the insertion hole are attached to the band. The locking groove formed in the portion is locked. Then, in this state, an operation of cutting the extra length portion of the band portion protruding from the head portion with a cutting tool such as a nipper is performed (for example, refer to Patent Document 2).

JP, 2016-111816, A JP, 2002-119778, A

In the conventional bundling work, when the excess length portion of the band portion is cut with a cutting tool, corner portions are formed on both sides in the width direction of the cut end portion of the band portion, so chamfering is performed to cut off these corner portions. .. For this reason, it is necessary to separately perform the chamfering process after cutting the extra length portion of the band portion with a cutting tool, and there is a problem that the binding work with the binding band cannot be performed efficiently.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a binding band cutting tool capable of efficiently performing a binding operation using a binding band.

The binding band cutting tool of the present invention is a binding band cutting tool in which each blade edge includes a pair of cutting blades that can approach and separate from each other, and cuts the binding band by bringing the blade edges closer to each other, One cutting edge of the cutting blade is formed with a recess having a width dimension greater than or equal to the width of the binding band, and the other cutting edge of the pair of cutting blades, when the cutting edges approach each other. A protrusion having a shape along the shape of the recess is formed so as to fit into the recess, and the recess and the protrusion are formed by fitting the protrusion into the recess. The binding band has a shape capable of being cut so that no corner is formed at the cut end of the binding band.

According to this binding band cutting tool, the blade tips of the pair of cutting blades are brought close to each other, and the protrusion formed on the blade tip of the other cutting blade is fitted into the recess formed on the blade tip of the one cutting blade. The binding band can be cut so that no corner is formed at the cut end of the binding band. As a result, unlike the conventional case, it is not necessary to perform chamfering work for cutting off the corners of the cut end after cutting the binding band, so that the binding work with the binding band can be efficiently performed.

It is preferable that the recess has a concave arc shape and the protrusion has a convex arc shape.
In this case, the recess and the protrusion can be easily formed.

It is preferable that the binding band cutting tool further includes a guide portion that is provided on at least one cutting blade of the pair of cutting blades and that guides the binding band so as to be arranged within a width dimension of the recess. ..
In this case, since the bundling band can be guided by the guide portion so as to be arranged within the width dimension of the recessed portion, the binding band can be reliably cut by the recessed portion and the protruding portion formed at the cutting edges of the pair of cutting blades. can do.

The guide portion is preferably a groove formed on the at least one cutting blade.
In this case, since it is not necessary to separately provide the cutting blade with the guide portion, the configuration of the entire tool can be simplified.

It is preferable that the groove has a shape corresponding to a plurality of binding bands having different width dimensions.
In this case, even when a plurality of types of binding bands having different widths are cut, the plurality of types of binding bands can be reliably guided so as to be arranged within the width dimension of the recess. As a result, the binding work using a plurality of types of binding bands can be efficiently performed.

The binding band cutting tool is rotatably supported with respect to each other, and a pair of arms provided with the respective cutting blades at one longitudinal end thereof, and the cutting edges of the cutting blades in the pair of arms are separated from each other. Urging means for rotationally urging each of the arms so that the other end portion in the longitudinal direction of each of the pair of arms serves as a grip portion, and the cutting blades of the pair of arms are It is preferable that the blade edges are formed so as to intersect each other when the blade edges are brought close to each other.

In this case, the pair of arms is rotated so as to intersect the cutting edges of the cutting blades provided on the pair of arms against the biasing force of the biasing means while gripping the grips of the pair of arms. The binding band can be cut by operation. Thus, the binding band can be easily cut, so that the binding operation with the binding band can be performed more efficiently. Further, since the blade edges of the pair of cutting blades intersect each other when they are brought close to each other, it is possible to easily form the recessed portion and the protruding portion as compared with the case where the blade edges are butted.

According to the present invention, a binding operation using a binding band can be efficiently performed.

It is a top view of a binding band cutting tool concerning one embodiment of the present invention. It is an expansion perspective view of the front-end|tip part of a 1st and 2nd arm. It is a top view which shows the cut edge part of the band part of a binding band. It is an expansion perspective view which shows the modification of a hollow part and a protrusion part. It is an expansion perspective view which shows the other modified example of a hollow part and a protrusion part. FIG. 7A is an enlarged perspective view showing a first modification of the guide portion, and FIG. 7B is a plan view of the guide portion of the first modification. It is an expansion perspective view which shows the 2nd modification of a guide part. It is an expansion perspective view which shows the 3rd modification of a guide part.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view of a cable tie cutting tool according to an embodiment of the present invention. In FIG. 1, the binding band cutting tool 1 of the present embodiment is made of, for example, a nipper type tool, and cuts an extra length portion of a band portion 51 protruding from a head portion (not shown) of the binding band 50. (See Figure 2). The binding band cutting tool 1 includes a first arm 2 and a second arm 3 which are rotatable with respect to each other, and a biasing force for rotating the first arm 2 and the second arm 3 so that the tip ends of the first and second arms 2 and 3 are separated from each other. And means 4.

A cutting blade 5 capable of cutting the extra length portion of the band portion 51 is provided at the respective tip portions (one end portion in the longitudinal direction) of the first and second arms 2 and 3. Intermediate portions in the longitudinal direction of the first and second arms 2 and 3 are rotatably supported by a support shaft 7 so that the cutting edges 6 of the pair of cutting blades 5 approach and separate from each other. The base end portion (the other end portion in the longitudinal direction) of each of the first and second arms 2 and 3 is a grip portion 8 that is gripped by an operator who performs a cutting operation on the band portion 51.

The biasing means 4 is composed of, for example, a compression coil spring, and is arranged between the arms 2 and 3 on the base end side of the support shaft 7 of the first and second arms 2 and 3. Both ends of the biasing means 4 are connected to the first and second arms 2 and 3, respectively. As a result, the urging means 4 separates the grip portions 8 of the first and second arms 2 and 3 from each other, that is, the cutting edges 6 of the cutting blades 5 of the first and second arms 2 and 3. Are urged to rotate so as to separate them from each other.

As described above, with the gripping portions 8 of the first and second arms 2 and 3 being gripped, the first edges 6 of the pair of cutting blades 5 are made to approach each other against the biasing force of the biasing means 4. The band portion 51 of the binding band 50 can be cut by rotating the second arms 2 and 3.
The biasing means 4 is not limited to the compression coil spring, and other types of springs or the like may be used. Further, the binding band cutting tool 1 does not necessarily have to include the biasing means 4.

FIG. 2 is an enlarged perspective view of the tip end portions of the first and second arms 2 and 3, showing a state where the blade tips 6 of the pair of cutting blades 5 are brought close to each other. In FIG. 2, the tip ends of the first and second arms 2 and 3 are bent into a substantially L-shape so that the cutting edges 6 of the pair of cutting blades 5 face each other in a state where the cutting edges 6 are close to each other. Is formed.

Accordingly, when the tip ends of the first and second arms 2 and 3 are rotated to bring the blade tips 6 closer to each other, the pair of cutting blades 5 rotate in the rotation direction of the first arm 2 (arrows in the figure). The blade edges 6 intersect with each other in a direction substantially perpendicular to the rotation direction of the second arm 3 (direction of arrow B).

The tip 6 of the cutting blade 5 at the tip of the first arm 2 is formed with a recess 11 having a width W2 that is greater than or equal to the width W1 of the band 51. In the present embodiment, the width dimension W2 of the recess 11 is set to be the same as the width dimension W1 of the band portion 51. The width dimension W2 of the recess 11 may be set to be larger than the width dimension W1 of the band portion 51.

The cutting edge 5 of the cutting blade 5 at the tip of the second arm 3 has a shape such that the cutting edge 5 is fitted into the depression 11 when the cutting edges 6 of the pair of cutting blades 5 approach and intersect with each other. A protrusion 12 having a shape along the side is formed.

The recessed portion 11 and the protruding portion 12 have a shape that allows the band portion 51 to be cut so that the cut portion of the band portion 51 does not have a corner when the protruding portion 12 is fitted in the recessed portion 11. .. In the present embodiment, for example, the recess 11 is formed in a concave arc shape, and the protrusion 12 is formed in a convex arc shape.

As a result, by fitting the protruding portion 12 into the recessed portion 11 and cutting the band portion 51 between the recessed portion 11 and the protruding portion 12, as shown in FIG. 3, the cut end portion 51 a of the band portion 51 is It is formed in a convex arc shape, and corners are not formed on both sides in the width direction of the cut end portion 51a.

In the present embodiment, the recess 11 is formed in the blade tip 6 of the first arm 2 and the protrusion 12 is formed in the blade tip 6 of the second arm 2. However, the protrusion 12 is formed in the blade tip 6 of the first arm 2. May be formed, and the recessed portion 11 may be formed in the cutting edge 6 of the second arm. Further, in the present embodiment, the recessed portion 11 and the protruding portion 12 are formed one by one, but may be formed by a plurality.

In FIG. 2, the cutting blade 5 of the second arm 3 is provided with a guide portion 13 that guides the band portion 51 before cutting so as to be arranged within the width dimension W2 of the recess 11. The guide portion 13 of the present embodiment includes a concave groove formed on the cutting blade 5 of the second arm 3. The width W3 of the groove 13 is set to be slightly larger than the width W1 of the band portion 51 (width W2 of the recess 11).

The bottom surface 13a of the groove 13 is an inclined surface that is inclined so that the groove depth gradually increases from the inner side (the protruding portion 12 side) to the outer side. Accordingly, by guiding the band portion 51 before cutting in the direction of the white arrow in the drawing along the groove 13, the band portion 51 can be reliably arranged within the width dimension W2 of the recess 11. ..

In the present embodiment, the groove 13 is formed in the tip portion (cutting blade 5) of the second arm 3, but, for example, the tip portion (cutting blade 5) of the first arm 2 is in the same direction as the second arm 3. When the second arm 3 is bent, the groove 13 may be formed at the tip of the first arm 2 instead of or in addition to the groove 13.

As described above, according to the binding band cutting tool 1 of the present embodiment, the cutting edges 6 of the pair of cutting blades 5 of the first and second arms 2 and 3 are brought close to each other to form the recess formed in the cutting edge 6 of the first arm 2. By fitting the protruding portion 12 formed on the cutting edge 6 of the second arm 3 into the portion 11, the band portion 51 is cut so that the cut end portion 51a of the band portion 51 of the binding band 50 does not have a corner portion. be able to. As a result, unlike the conventional case, it is not necessary to carry out chamfering work for cutting off the corners of the cut end after cutting the binding band, so that the binding work with the binding band 50 can be performed efficiently.

Further, since the recessed portion 11 is formed in a concave arc shape and the protruding portion 12 is formed in a convex arc shape, the recessed portion 11 and the protruding portion 12 can be easily formed.
Further, the binding band cutting tool 1 includes a guide portion 13 that guides the band portion 51 so as to be arranged within the width dimension W2 of the recess 11. Accordingly, since the guide portion 13 can guide the band 51 so as to be arranged within the width dimension W2 of the recessed portion 11, the recessed portion 11 and the protruding portion 12 respectively formed on the cutting edges 6 of the pair of cutting blades 5. Thus, the band portion 51 can be surely cut.

Further, since the guide portion 13 is a groove formed in the cutting blade 5 of the second arm 3, it is not necessary to separately provide the guide portion 13 on the cutting blade 5. Thereby, the configuration of the entire tool can be simplified.
In addition, the first and second arms 2 and 3 of the cutting blade 5 are made to cross each other against the biasing force of the biasing means 4 while gripping the gripping portions 8 of the first and second arms 2 and 3. The band portion 51 can be cut by rotating the arms 2 and 3. As a result, the band portion 51 can be easily cut, so that the binding operation with the binding band 50 can be performed more efficiently. Further, since the cutting edges 6 of the pair of cutting blades 5 intersect with each other when they are brought close to each other, the recessed portion 11 and the protruding portion 12 can be formed more easily than when the cutting edges 6 are butted.

The recessed portion 11 and the protruding portion 12 in the above-described embodiment are formed in a concave arc shape and a convex arc shape, but are formed in another shape unless the cut end portion 51a of the band portion 51 has a corner portion. May be. For example, as shown in FIG. 4, the depression 11 may be formed in a gentle concave V shape, and the protrusion 12 may be formed in a gentle convex V shape. Further, as shown in FIG. 5, the depression 11 may be formed in a gentle concave shape, and the protrusion 12 may be formed in a gentle convex shape.

FIG. 6A is an enlarged perspective view showing a first modification of the guide portion 13. Further, FIG. 6B is a plan view of the guide portion 13 of the first modified example. In FIGS. 6A and 6B, the guide portion 13 of this modification has a shape corresponding to a plurality of types of binding bands 50 in which the width dimensions of the band portions 51 are different from each other.

Specifically, the guide portion 13 of this modified example is composed of a concave arc-shaped groove formed in the cutting blade 5 of the second arm 3. The width dimension W3 of the groove 13 is set to be slightly wider than the width dimension W11 of the wide band portion 51. As a result, the guide portion 13 of the present modification is arranged not only in the band portion 51 having the wide width dimension W11 but also in the width dimension W2 of the recessed portion 11 not only in the band portion 51 having the narrow width dimension W12. You can be guided to do so.

Therefore, according to the binding band cutting tool 1 of the first modified example, even when a plurality of types of binding bands 50 having different width dimensions of the band portion 51 are cut, each of these types of binding band 50 can be reliably performed. It can be guided so as to be arranged within the width dimension W2 of the recess 11. As a result, the binding work using the binding bands 50 of a plurality of types can be efficiently performed.

FIG. 7 is an enlarged perspective view showing a second modification of the guide portion 13. In FIG. 7, the guide portion 13 of this modification has a shape corresponding to a plurality of types of binding bands 50 in which the width dimensions of the band portions 51 are different from each other, as in the first modification of FIG. 6A. .. Specifically, the guide portion 13 of this modified example includes a concave first groove 131 and a second groove 132 formed in the cutting blade 5 of the second arm 3.

The bottom surface 131a of the first groove 131 is an inclined surface that is inclined so that the groove depth gradually increases from the inner side (the protruding portion 12 side) to the outer side.
The second groove 132 is formed on the bottom surface 131a of the first groove 131 and has a width dimension W32 formed to be narrower than the width dimension W31 of the first groove 131. The bottom surface 132a of the second groove 132 is an inclined surface having a larger inclination angle than the bottom surface 131a of the first groove 131, and the groove depth gradually increases from the inner side (projection 12 side) to the outer side. Is inclined to.

The width W31 of the first groove 131 is set to be slightly larger than the width W11 of the wide band portion 51 (width W2 of the recess 11).
The width dimension W32 of the second groove 132 is set to be slightly larger than the width dimension W12 of the band portion 51 formed to be narrow.

Thereby, the guide portion 13 of the present modification can guide the band portion 51 having the wide width dimension W11 by the first groove 131 so as to be arranged within the width dimension W2 of the recess portion 11, and The two grooves 132 can guide the band portion 51 having the narrow width dimension W12 to be arranged within the width dimension W2 of the recess 11.

Therefore, according to the binding band cutting tool 1 of the second modified example, even when cutting a plurality of types of binding bands 50 in which the width dimension of the band portion 51 is different, each of these types of binding band 50 can be reliably performed. It can be guided so as to be arranged within the width dimension W2 of the recess 11. As a result, the binding work using the binding bands 50 of a plurality of types can be efficiently performed.

FIG. 8 is an enlarged perspective view showing a third modification of the guide portion 13. In FIG. 8, the guide portion 13 of this modified example is configured separately from the cutting blade 5 of the second arm 3. Specifically, the guide portion 13 of this modification is formed in a U shape as a whole, and the base 133 fixed to the upper surface of the cutting blade 5 of the second arm 3 in FIG. It is constituted by a pair of partitions 134 extending upward in FIG. 8 from both ends in the width direction of 133.

The width W4 between the pair of partitions 134 is set to be slightly larger than the width W1 of the band portion 51 (width W2 of the recess 11). Accordingly, by arranging the band 51 before cutting between the pair of partitions 13 in the guide portion 13 and guiding it in the direction of the white arrow in the figure, the band portion 51 is surely widthwise dimension W2 of the recessed portion 11. Can be placed inside.

All of the above-mentioned embodiments are illustrative and not restrictive. The scope of rights of the present invention is defined by the scope of the claims, and all modifications within the scope equivalent to the configurations described therein are included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Binding band cutting tool 2 1st arm 3 2nd arm 4 Energizing means 5 Cutting blade 6 Cutting edge 7 Support shaft 8 Grasping part 11 Recessed part 12 Projection part 13 Guide part 13a Bottom surface 50 Binding band 51 Band part 51a Cutting end part 131 1st groove 131a bottom surface 132 2nd groove 132a bottom surface 133 base 134 partition W1 width dimension of band section W2 width dimension of recessed section W3 width dimension of guide section W4 width dimension between pair of partitions W11 width dimension of wide band section W12 Width of narrow band W31 Width of first groove W32 Width of second groove

Claims (6)

A binding band cutting tool that includes a pair of cutting blades in which the blade edges of the blades can approach and separate from each other, and that cuts the binding band by bringing the blade edges closer to each other,
One of the cutting edges of the pair of cutting blades is provided with a recess having a width dimension equal to or greater than the width dimension of the binding band,
The other cutting edge of the pair of cutting blades is formed with a protruding portion having a shape along the shape of the recessed portion so that the cutting edge is fitted into the recessed portion when the blade tips approach each other,
The hollow portion and the protruding portion are shaped so that the binding band can be cut so that a corner portion is not formed at a cut end of the binding band by fitting the protruding portion into the hollow portion. Band cutting tool. The binding band cutting tool according to claim 1, wherein the recess has a concave arc shape, and the protrusion has a convex arc shape. The binding band according to claim 1 or 2, further comprising a guide portion that is provided on at least one of the pair of cutting blades and that guides the binding band so as to be arranged within a width dimension of the recess. Cutting tool. The binding band cutting tool according to claim 3, wherein the guide portion is a groove formed in the at least one cutting blade. The binding band cutting tool according to claim 4, wherein the groove has a shape corresponding to a plurality of types of binding bands having different width dimensions. A pair of arms that are rotatably supported with each other, and each of the cutting blades is provided at one end in the longitudinal direction thereof;
And a biasing unit that biases the arms so as to separate the cutting edges of the cutting blades of the pair of arms from each other.
The other end portion in the longitudinal direction of each of the pair of arms is a grip portion,
The binding band cutting tool according to any one of claims 1 to 5, wherein the cutting blades of the pair of arms are formed so that the blade edges intersect each other when the blade edges are brought close to each other. ..

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