JPH0349894A - Cutting device for tape - Google Patents

Abstract

PURPOSE:To well cut a tape with its floating prevented by providing a cutter driving mechanism for moving a cutter in a direction at a predetermined angle for a supporting surface diagonally from the upper of a tape upper surface at the time of cutting the tape. CONSTITUTION:A tape T, held on a supporting surface 1a in a holding part 1, is cut by moving a cutter 2 with a cylinder 4 in a direction toward an upper surface of the tape diagonally from the upper of the tape upper surface and in a direction at a predetermined angle theta for the supporting surface 1a. That is, an edge part 2a of the cutter 2 is attached to the tape T diagonally from its upper and moved in a cutter passage 1b while being pressed to the tape supporting surface 1a, and the tape T is cut. As a result, good cutting can be performed by preventing floating of the tape T when it is cut.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape cutting device incorporated in a magnetic tape winding device or the like that connects a magnetic tape to a leader tape and winds it into a cassette.

[Conventional technology]

A conventional cutting device of this type is generally shown in the schematic configuration diagram of FIG. This cutting device is attached to a substrate (not shown) and has a holding section 31 that air-adsorbs the tape T onto a support surface 31a thereof, and a cutter 32 having a blade section 32a forming a predetermined angle θ with respect to the support surface 31a. death,
This cutter 32 is connected to r1 of the tape T parallel to the supporting surface 31a.
Seiaki cutter passage 3 of holding part 31 in the direction (arrow A direction)
1b to cut the tape T.

[Problem to be solved by the invention]

However, in the above conventional example, since the cutter 32 is moved in the middle direction of the tape T, as shown in the explanatory diagram of FIG. 10, when the cutter 32 hits the tape T, the tape T is lifted up. In some cases, the tape T is cut in a wrinkled state, and in this case, there is a problem in that the cut portion is bent or wavy. This problem is particularly likely to occur with tapes coated with a highly hard magnetic material, such as metal tapes.

In addition, in the above conventional example, as shown in the explanatory diagram of FIG. 11, only one point of the blade portion 32a of the cutter 32 hits the tape T, and cutting is performed only at this negative point (point P). There was a problem in that the wear of the blade portion 32a at this point was significant and the return life of the cutter 32 was short.

Therefore, the present invention has been made to solve the problems of the prior art as described above, and its purpose is to:
To provide a tape cutting device that cuts well and has a long life.

[Means to solve the problem]

A tape cutting device according to the present invention has a holding part that holds a long tape in close contact with a support surface, and a blade part extending in a direction forming a predetermined angle with respect to the support surface of the holding part, A cutter that cuts the tape held on the support surface in the width direction by this blade part, and a cutter that is provided at a predetermined position of the holding part and below the cutting position of the tape, and that passes through the cutter when cutting the tape. and a cutter drive mechanism that moves the cutter from diagonally above the upper surface of the tape in a direction forming a predetermined angle with respect to the support surface when cutting the tape.

[For production]

In the present invention, the tape held on the support surface of the holding part is moved by moving the cutter in a direction from diagonally above the top surface of the tape toward the top surface of the tape, and in a direction forming a predetermined angle with the support surface. Cut the tape. That is, the blade of the cutter hits the tape obliquely from above and moves along the cutter path while pressing the tape against the support surface and cuts the tape.

In this manner, the present invention cuts the tape while applying force in the direction of pressing the tape against the support surface, so the tape does not lift up when cutting the tape, and good cutting is achieved.

Furthermore, by moving the cutter in an oblique direction to cut the tape, the blade can be pressed against the tape while being pulled, and a good cut can be achieved.

Furthermore, since the tape is cut using a predetermined length of the blade of the cutter, the wear of the cutter is not at one point but is dispersed over a predetermined length, and the wear is not concentrated at one point.

〔Example〕

The present invention will be explained below based on illustrated embodiments.

FIG. 1 is a schematic configuration diagram showing an embodiment of a tape cutting device according to the present invention. The cutting device of this embodiment allows a long tape T to be air-adsorbed onto the support surface la of the holding part 1. , the tape T held on the support surface la is cut in the rjj direction by a cutter 2 attached to the arm 3, which has a blade 2a extending in a direction forming a predetermined angle θ with respect to the support surface 1a of the holding part l. It is something. In addition, a tape T is attached to the holding part 1.
A cutter passage 1b through which the cutter 2 passes when cutting the tape is formed below the cutting position in the form of a groove or by dividing the holding part 1 into two as shown in the figure. Further, when cutting the tape T, the cutter 2 is moved in a direction B that is from diagonally above the top surface of the tape T (upper right position in the figure) toward the top surface of the tape T and that forms a predetermined angle with the support surface 1a. A cylinder 4 is provided as a cutter drive mechanism.

FIG. 2 is an explanatory diagram showing the tape TJgJ cutting process in the embodiment of FIG. 1. As shown in the figure, in this embodiment, when cutting the tape T held on the support surface la of the holding part 1, the direction is from diagonally above the top surface of the tape T toward the top surface of the tape T. , the cutter 2 is moved in a direction forming a predetermined angle φ with respect to the support surface. Therefore,
The blade part 2a of the cutter 2 hits the tape T from diagonally above,
The cutter path 1b is pressed while pressing the tape T against the support surface 1a.
to cut the tape T.

In this way, according to this embodiment, the tape T is placed on the support surface 1a.
Since the tape can be cut while applying force in the direction of pressing the tape T, the tape T will not lift up as shown in FIG. 10 when the tape T is cut. Therefore, since the tape T can be cut well without wrinkles, the shape of the cut portion of the tape T can be made into a good shape without bends or corrugations.

Also, by moving the cutter 2 in the diagonal direction B,
As shown in the explanatory diagram of FIG. 3, since the blade part 2a can be pressed against the tape T while being pulled, the actual blade edge angle becomes sharper than in the case of simply pressing and cutting.

Therefore, the cutting becomes good, and this also contributes to making the shape of the cut part good.

Furthermore, in this embodiment, as shown in FIG.
As shown in FIG. 11, the blade part 2a
The wear of the cutter 2a is not concentrated at one point, but can be dispersed over the predetermined length 1, so that the life of the cutter 2a can be extended.

Therefore, this device is fully applicable to cutting tapes coated with a highly hard magnetic material such as metal tapes such as DAT tapes.

FIG. 4 is a schematic diagram showing another embodiment of the present invention.

In the same figure, the same reference numerals are given to the same or corresponding components as in the embodiment shown in FIG. This is different from the embodiment. That is, in this embodiment, the cutter 2 is provided on an arm 6 that can pivot around a fulcrum 5, and the end of the arm 6 opposite to the cutter 2 is connected to a cylinder 7.
By pulling upward in the figure, the arm is rotated counterclockwise, and the cutter 2 is pressed against the tape T from diagonally above. Structures and functions other than the above are described in 1 above.
Since it is the same as the case of the embodiment shown in the figure, its explanation will be omitted.

FIG. 5 is a schematic configuration diagram showing still another embodiment of the present invention. In this figure, the same or corresponding components as in the embodiment of FIG. 1 are designated by the same reference numerals.This embodiment differs from the embodiment of FIG. 1 in the driving mechanism of the cutter 2. That is, in this embodiment, the cutter 2 is provided on a plate-shaped arm 8, and the arm 8 is provided with an elongated hole 9 extending in a dogleg shape and an elongated hole 10 extending linearly. Fixed guide pins 11 and 12 are inserted into the elongated holes 9 and 10 of the arm 8, respectively.

Therefore, when the end of the arm 8 on the side where the cutter 2 is not provided is pushed in the direction C by the cylinder 13 when cutting the tape T, the arm 8 is guided by the long holes 9 and 10 and moves to move the cutter 2 to the tape T. Press diagonally from above to cut the tape T. Since the configuration and operation other than those described above are the same as those of the embodiment shown in FIG. 1, the explanation thereof will be omitted.

In this embodiment, for example, in a magnetic tape winding device, the arm 8 is provided so as to extend perpendicularly to the surface of the substrate 14, as shown in FIG.
There is an advantage that the area occupied by the substrates 1 and 4 (the area occupied by the configuration of the cutting device when the substrate 14 is viewed from the direction D) can be smaller than in the embodiments shown in FIGS.

FIG. 6 is a schematic configuration diagram showing still another embodiment of the present invention. In the same figure, the same reference numerals are given to the same or corresponding components as in the embodiment shown in FIG. 5. This embodiment differs from the one shown in FIG. 5 in the shape of the elongated hole 10. Therefore, the trajectory when the cutter 2 is moved is different from that shown in FIG.

The configuration and operation other than those described above are the same as those of the embodiment shown in FIG. 5, so the explanation thereof will be omitted.

FIG. 7 is a schematic configuration diagram showing still another embodiment of the present invention. In the same figure, the same reference numerals are given to the same or corresponding components as in the embodiment shown in FIG. 18 is different from the embodiment shown in FIG. 5 above.

Therefore, the arm 15 moves according to the inner surface shape of the guide 16, and the cutter 2 can therefore be moved in an oblique direction. Since the configuration and operation other than those described above are the same as those of the embodiment shown in FIG. 5, the explanation thereof will be omitted.

FIGS. 8(a) and 8(b) are a schematic configuration diagram and a schematic perspective view showing still another embodiment of the present invention.

In the figure, the same reference numerals are given to the same or corresponding components as those in the embodiment shown in FIG. 5, and the explanation will be given below. In this embodiment, an arm 19 equipped with a cutter 2 is inserted through a guide member 20 so as to be movable in the C direction, and a support shaft 21 fixed to the guide member 20 is incorporated in a bearing (not shown) so as to be rotatable in the E direction. .

The guide member 20 is pulled upward by a spring 22. Further, the arm 19 is provided with a roller 24 that rotates in contact with a guide 23 provided on the upper side. Therefore, in this embodiment, when the arm 19 is moved in the C direction by the cylinder 13, the arm 19 moves diagonally downward while tracing a trajectory determined by the roller 24 along the guide 23. Since the configuration and operation other than those described above are the same as those of the embodiment shown in FIG. 5, the explanation thereof will be omitted.

It should be noted that the present invention is not limited to the six types of embodiments described above,
Other configurations may be used in which the cutter 2 is pressed against the tape T from diagonally above to cut the tape T.

〔Effect of the invention〕

As explained above, according to the present invention, the tape is not lifted up, so the tape can be cut well, and in addition, by pulling the cutter against the tape and applying it, the cutting edge angle can be substantially sharpened. , the cutting becomes good, and therefore the shape of the cut part can be made good. Furthermore, since the tape can be cut using a predetermined length of the blade of the cutter, the wear of the blade does not concentrate on one point, and the life of the cutter can be extremely extended.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a tape cutting device according to the present invention, FIG. 2 is an explanatory diagram showing a tape T cutting process in the embodiment of FIG. 1, and FIG. 3 is a diagram similar to that of FIG. An explanatory diagram showing the cutting process of the embodiment, FIGS. 4 to 7 are schematic configuration diagrams of other embodiments, and FIG. 8 (a>(b) is a schematic diagram of the other embodiments and their FIG. 9 is a schematic perspective view of a conventional tape cutting device; FIG. 10 is a schematic diagram of a conventional tape cutting device;
FIG. 11 is an explanatory diagram for explaining the problem of tape lifting in the conventional example, and FIG. 11 is an explanatory diagram for explaining the problem of cutter wear in the conventional example. DESCRIPTION OF SYMBOLS 1... Holding part, 1a... Support surface, 1b... Cutter path, 2... Cutter, 2a... Blade part, 3.6, 8, 1
5.19... Arm, 4.7.13... Cylinder, 9.10... Long hole, 11.12... Guide pin, T... Tape.

Claims (1)

[Scope of Claims] A holding part that holds a long tape in close contact with a supporting surface; and a blade part extending in a direction forming a predetermined angle with respect to the supporting surface of the holding part; a cutter that cuts the tape held on the support surface in its width direction; and a cutter path provided at a predetermined position of the holding section below the cutting position of the tape, through which the cutter passes when cutting the tape. A tape cutting device comprising: a cutter drive mechanism that moves the cutter from diagonally above the upper surface of the tape in a direction forming a predetermined angle with respect to the support surface when cutting the tape.