JPH0347836Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a cutter for cutting tapes and strings.

<Prior art> A cutter is provided at the end of a holder body that rotatably supports a tape roll wound with adhesive tape on the side from which the tape is pulled out from the tape roll.
It is conventionally known to use this cutter to cut a required amount of tape pulled out from a tape roll.

<Problems to be Solved by the Invention> The cutter blade provided in the above-mentioned conventional holder is a jagged continuous chevron-shaped blade, and the blade plate is mounted vertically with the blade facing upward.

Even if the blade is a continuous chevron blade, it is attached with the blade facing upward, so there is a risk of accidentally injuring fingers.

Furthermore, the cut edges of the tape cut with this continuous chevron blade will have the same jagged edges as the blade, so for example, in the case of light-shielding adhesive tapes used in fields such as photoengraving and printing plate baking, the cut edges will have jagged edges. This becomes an obstacle when photocopying and printing.

For this reason, in this field, instead of the blade plate mentioned above, a razor with a straight blade is attached so that the cut end of the tape will be a straight line. Accidents resulting in injuries are occurring frequently, and this has become a problem in terms of labor management.

<Means for solving the problem> Therefore, the present invention provides a bearing piece as a cutter,
A blade mounting body with a blade protruding from the periphery is rotatably pivotally connected to the bearing piece, and the blade mounting body is biased in one rotational direction between the blade mounting body and the support body, so that the blade The present invention is characterized in that a biasing means is provided to keep the blade protruding from the peripheral surface of the mounting body from facing upward at all times.

<Operation> Immediately before pulling out a predetermined amount of tape or string, the tape is brought into contact with the blade mount from above, and then the tape or string is pulled out while rotating the blade mount against the bias.
As a result, the blade protruding from the periphery of the blade mount faces upward due to the rotation of the blade mount, cuts the tape or string at the position where it has been pulled out a predetermined amount, and when the cutting is completed, the blade mount is moved by the biasing force of the biasing means. It is reversed to its original state and the blade no longer points upwards.

<Embodiment> In the illustrated embodiment, 1 is a holder body, and the holder body has an accommodation recess 2 on its upper surface for accommodating the lower half of the tape roll T, and an inner part of the tape in the center of both left and right banks of this accommodation part. A pair of holding grooves 4 into which shafts 3' projecting left and right from the center of the fitting frame 3 fitted around the periphery are inserted.
The shaft 3' is received at the lower end of the pair of holding grooves 4 to rotatably hold the tape roll T. Of course, the mechanism for rotatably holding the tape roll of the holder body is not shown in the figure. It is not limited to this structure, and other structures may be used.

End 1' of the holder body 1 on the side from which the tape is pulled out
At the front end, place the inverted U-shaped attachment part 6 of the cutter support 5 over the front wall 7 of the holder body, and if necessary, tighten it to the front wall with screws to fix the cutter support 5 to the holder body. . The cutter support has a pair of bearing pieces 8a and 8b that protrude forward from both left and right sides.
The blade mounting body 11 is attached to a blade plate 10 having a blade 9 with the blade protruding from the circumferential surface of the blade plate 10.
It is rotatably pivoted between a and 8b.

One end 11a of the blade attachment body 11 has an arc-shaped notch 12 opened in the end surface, and the other end 11b
is provided with a radial groove 13. One of the bearing pieces 8a facing the end portion 11a of the blade attachment body provided with the notch 12 is provided with a protrusion 14 cut up and extending into the notch.

To pivotally attach the blade mount 11 to the bearing pieces 8a and 8b, screw the headed screw 15 into the female screw hole in each bearing piece, and insert the shaft of the screw into the center hole opened on each end face of the blade mount 11. let In this case, the inner diameter of the center hole 16 of the end 11b of the blade attachment body having the groove 13 is made slightly larger than the outer diameter of the shaft of the screw, and the coil spring 19 has outward protrusions 17 and 18 at both ends.
into the center hole 16 while inserting one protrusion 17 into the groove 13, and insert the end 11b of the blade attachment body into the center hole 16.
The other protrusion 18 located outside is bent in the direction of compressing the spring so that it is pressed against the front surface of the attachment part 6. Note that the inner diameter of the coil spring 19 is slightly larger than the outer diameter of the shaft portion of the screw 15.

As a result, the small prestress applied to the spring 19 biases the blade mounting body 11 in the counterclockwise direction in FIG. The force of the body prevents further rotation (FIG. 4), and the blade 9 of the blade plate 10 protruding from the circumferential surface of the blade attachment body is oriented laterally toward the tape roll T in this embodiment. Of course, the blade 10 is not oriented sideways, but may be oriented diagonally downward with the blade mount 11 rotated a little more counterclockwise, or directly downward.

Therefore, as shown in FIG. 6, just before pulling out the required amount of tape t from the tape roll T, if the middle of the tape t is brought into contact with the blade mount 11 from above and the remaining length is pulled, the blade mount 11 will be removed from the tape. The other end 12b of the arcuate notch 12 rotates against the bias of the spring 19 until it comes into contact with the protrusion 14 of the bearing piece 8a due to the contact friction or adhesion with the adhesive attached to the tape t. Now, the blade 9, which had been facing sideways, now faces directly upward and cuts the tape t in contact with the circumferential surface of the blade attachment body 11 in the width direction (FIG. 7).

In this manner, when the cutting of the tape t is completed, the blade attachment body 11 is reversely rotated by the biasing force of the spring 19 and returns to its original state, and the blade 9 in this embodiment is turned sideways again.

The blade mounting body 11 is provided with an axial accommodation groove 21 for accommodating the blade plate 10 and a restraining plate 20 that suppresses the blade plate.
The holding plate 20 is pressed with a small screw 22, and the blade plate 10 is pressed and fixed against one side surface 21a of the housing groove 21. If this causes the blade 9 to become dull, screw 1
5 and 15 from the bearing pieces 8a and 8b, the blade attachment body 11 is removed, and the blade plate 10 can be easily replaced with a new one. Incidentally, the side surface 21a of the accommodation groove 21 against which the blade plate 10 is pressed may be aligned with the radial direction or radial surface passing through the center of the blade mounting body, but it may be moved slightly in parallel from the radial surface as shown in FIGS. 6 and 7. This allows the blade 9 to cut the tape t in the width direction more smoothly.

The cutter support body 5, which integrally includes the attachment portion 6 and the bearing pieces 8a and 8b, and the blade attachment body 11 can be made of metal, plastic, ceramic, glass, wood, or any other arbitrary material.

Alternatively, only one bearing piece may be used, and the mounting body 11 may be pivotally mounted in a cantilevered manner.

In the illustrated embodiment, a protrusion 14 cut and raised from the bearing piece 8a and one end 12a of the arcuate groove 12 of the blade attachment body are shown.
The blade 9 serves as a stopper to receive the blade mount against the biasing force of the spring 19, which is the biasing means, but the structure is not necessarily limited to this, and for example, the blade 9 protruding from the peripheral surface of the blade mount Optionally, the protrusion 14 may be used as a stopper, or an arm that abuts the support body 5 may be protruded from the blade mounting body, and this arm may be used as a stopper.

This stopper is not necessarily necessary, and the spring 1
This can be omitted if the blade 9 faces sideways, diagonally downward, or downward when the blade 9 is unwound.

Further, the blade attachment body 11 is made of aluminum and has a cylindrical shape, but its cross-sectional shape can be varied as long as it has a blade 9 protruding from the circumferential surface and a tape or the like can be brought into contact with the upper surface. It may be of any shape such as square, oval, oval, etc. Furthermore, the surface for contact with tape or the like may be knurled to increase friction.

Further, an adhesive may be applied to the upper surface or a double-sided adhesive tape may be applied.

The blade 9 may be provided in a non-replaceable manner on the blade mount 11, and when the blade becomes dull, the blade mount may be replaced with a new one.

Further, in this embodiment, the support body 5 is fixed to a type of known tape holder using an inverted U-shaped attachment part 6, but the attachment part 6 can be changed appropriately and the support body 5 can be fixed to other types of tape holders. Alternatively, the support 5 may be configured as a stand placed on a desk and used exclusively for cutting tapes or strings.

Further, in this embodiment, the blade plate 10 is straight and faces parallel to the axis of the blade mount 11, but it may be oriented at an angle to the axis of the blade mount 11, or the blade plate 10 may be curved. good. The blade 9 may be a straight edge as shown, but may also be a continuous chevron edge, be inclined from one end to the other end, or be M-shaped.

<Effects of the invention> According to the invention, no matter what kind of blade the blade is, the blade that always protrudes from the circumferential surface of the blade mount does not face upward, and tape or the like is brought into contact with the top surface of the blade mount and is biased. By rotating the blade against the
Therefore, it is possible to provide a cutter that is free from the risk of injuring fingers.

[Brief explanation of the drawing]

The drawings show one embodiment of the cutter of the present invention, and FIG. 1 is a perspective view of a portion of the cutter fixed to a tape holder, FIG. 2 is a side view of a portion of FIG. 1 in section, and FIG. Figure 3 is an exploded perspective view of the cutter, Figure 4 is an explanatory diagram showing the relationship between the blade mounting body and the stopper, and Figure 5 is an exploded perspective view of the cutter.
The figure is an explanatory diagram showing the relationship between the blade attachment body and the biasing means, Fig. 6 is an explanatory diagram of the final state in which the tape has been pulled out by the required amount, and Fig. 7 is an explanatory diagram of the state in which the tape is cut in the width direction. . In the figure, 5 is a support, 8a and 8b are bearing pieces, 9 is a blade, 11 is a blade attachment, and 19 is a spring serving as a biasing means.

Claims (1)

[Scope of utility model registration request] A bearing piece is provided on the support body, a blade attachment body with a blade protruding from the periphery is rotatably pivotally connected to the bearing piece, and the blade attachment body is placed between the blade attachment body and the support body in one direction of rotation. A cutter characterized in that it is provided with a biasing means that biases the blade protruding from the circumferential surface of the blade mounting body so as not to always face upward.