JPH065888U - Slide cutter - Google Patents

Abstract

(57) [Summary] [Purpose] To realize compactness by completely cutting the cutting method and to improve the cutting ability, so-called sharpness. [Structure] A slide cutter characterized in that a fixed blade or a fixed blade holder and a movable blade or a movable blade holder are connected to each other near both ends by a link piece, and the movable blade intersects the fixed blade by driving the link piece. Is.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention cuts a long sheet such as roll paper, and is particularly suitable for cutting the loaded roll paper into a required length by incorporating it in a fax machine.

[0002]

[Prior art]

 Conventional cutters of this type rotate the movable blade as described in Japanese Utility Model Laid-Open No. 56-176197, and swing the movable blade as described in Japanese Utility Model Laid-Open No. 61-148590. There was something to move.

[0003]

[Problems to be solved by the device]

 OA equipment such as facsimiles is becoming smaller and lighter at a remarkable speed, and there is an increasing demand for smaller and lighter built-in cutters. However, in both the rotary type and the swing type, the above-mentioned conventional cutter requires the movable blade to rotate about the lengthwise axis, so that the width of the movable blade is about twice the width of the movable blade. I was trying. This proposal realizes compactness by making the cutting method completely new, and further improves the cutting ability, so-called sharpness.

[0004]

[Means for Solving the Problems]

 The present invention is characterized in that fixed blades or fixed blade holders and movable blades or movable blade holders are connected with link pieces near both ends thereof, and the movable blades are connected to the fixed blades by driving the link pieces. It is a slide cutter.

[0005]

[Action]

 The slide cutter of the present invention is extremely thin and compact because the movable blade moves in the same plane instead of the conventional rotary movement. By arranging the fixed blade and the movable blade non-parallel, by arranging the two link pieces non-parallel, or by making the distance between the fulcrums of the two link pieces different, An angle can be given at the time of intersection, that is, a shear angle can be given. The shear angle can be set arbitrarily by designing these things alone or in combination. Further, in the present invention, since the movable blade is moved by the circular link piece, unlike the guillotine cutter, when the movable blade descends and crosses the fixed blade, it also moves in the longitudinal direction. That is, when the sheet is cut, the movable blade does not simply descend, but cuts while pulling in the length direction. For this reason, the cutting is extremely smooth and the cutting surface is good.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a slide cutter 1 of an embodiment, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a front view of a slide cutter of another embodiment, FIG. 4 is a front view showing its driving state, and FIG. 6 is a front view of the slide cutter of the embodiment, FIG. 6 is an end view of the AA line, and FIG. 7 is a front view of the cutting end state.

The slide cutter 1 shown in FIGS. 1 and 2 is the simplest one, in which fulcrums 4, 5 are provided near both ends of the fixed blade 2, and fulcrums 6, 7 are provided near both ends of the movable blade 3. 4, 6 are linked by a link piece 8, and fulcrums 5, 7 are linked by a link piece 9. A guide plate 10 is formed on the fixed blade 2 in contact with the movable blade 3. When one of the link pieces, for example, the link piece 8 is driven in the direction of the arrow around the fulcrum 4, the link piece 9 also moves in the direction of the arrow around the fulcrum 5 so that the movable blade 3 makes a circular motion. It descends and contacts the fixed blade 2, and cuts the roll paper between the fixed blade and the movable blade. Since the movable blade 3 descends and moves in the longitudinal direction, the sheet is cut while being pulled. In the case of the present embodiment, the fixed blade and the movable blade are arranged in parallel, the link pieces 8 and 9 are attached at the same angle, and the distance between the fulcrums 4 and 6 and the distance between the fulcrums 5 and 7 are also equal, so that the fixed blade is fixed. The blade and the movable blade intersect in a parallel state, and no shear angle occurs during cutting. Actually, a larger shear angle allows smoother cutting, but in the present embodiment, the shear angle is eliminated for the sake of simplicity of explanation.

In the slide cutter 11 shown in FIGS. 3 and 4, fulcrums 14 and 15 are provided near both ends of the fixed blade 12 and fulcrums 16 and 17 are provided near both ends of the movable blade 13, respectively. Reference numeral 16 is a link piece 18, and fulcrums 15 and 17 are connected by a link piece 19. Since the link pieces 18 and 19 are not parallel and the distances between the fulcrums are different, when the link pieces are driven in the direction of the arrow from the state shown in FIG. 3, the movable blade 13 is cut at the time of cutting as shown in FIG. Inclination with respect to the fixed blade 12 causes a shear angle.

In the slide cutter 21 shown in FIGS. 5, 6 and 7, since the fixed blade and the movable blade are extremely thin, the fixed blade 23 is attached to the fixed blade holder 22 and the movable blade 25 is attached to the movable blade holder 24. ing. The fixed blade holder 22 is provided with fulcrums 26 and 27 near both ends, and the movable blade holder 24 is provided with fulcrums 28 and 29 near both ends. The fulcrums 26 and 28 are link pieces 30 and the fulcrums 27 and 29 are links. It is connected by a piece 31. A lower end of the link piece 30 extends downwardly to form a long hole 32, and a pin 34 protruding from the worm wheel 33 is engaged with the long hole 32. A tooth profile is formed on the outer periphery of the worm wheel 33, which meshes with the worm 36 and is rotated by the motor 35. When the worm wheel 33 is rotated in the arrow direction, that is, clockwise, from the state of FIG. 5, the link piece 30 starts to rotate counterclockwise and the link piece 31 starts to rotate clockwise, and the movable blade 25 gradually descends. Move to the left. Eventually, the fixed blade and the movable blade start intersecting from the left end, and then intersect from the center to the right end until the state shown in FIG. 7 is reached. The shear angle is the largest at the start of cutting, gradually decreases, and becomes the smallest at the end of cutting, which is extremely rational. Since the worm wheel 33 still continues to rotate in the direction of the arrow after cutting, the link piece 30 rotates clockwise, the link piece 31 rotates counterclockwise, and the movable blade 25 gradually rises to the state shown in FIG. Then, the motor 35 stops.

[0010]

[Effect of device]

 Since the movable blade of the present invention does not rotate or swing but moves in its plane, the slide cutter can be made extremely narrow and compact. Since it does not require a shaft or bearing for rotating the movable blade, it is also lighter in weight, and rationalization of assembly work and cost reduction can be realized by reducing the number of parts. For cutting, the shear angle can be set freely, so a sufficiently large shear angle can be used to reduce the cutting torque. In addition, when cutting, the movable blade moves in the lengthwise direction, that is, while pulling, that is, the cutting is extremely smooth, and the cutting surface is also good.

[Brief description of drawings]

FIG. 1 is a front view of a slide cutter 1 according to an embodiment.

FIG. 2 is a sectional view of a slide cutter 1 according to an embodiment.

FIG. 3 is a front view of a slide cutter 11 according to an embodiment.

FIG. 4 is a front view showing a driving state of the slide cutter 11 of the embodiment.

FIG. 5 is a front view of the slide cutter 21 of the embodiment.

6 is an end view taken along the line AA in FIG.

FIG. 7 is a front view of the slide cutter 21 according to the embodiment when it has been cut.

[Explanation of symbols]

 1 slide cutter 2 fixed blade 3 movable blade 4 fulcrum 5 fulcrum 6 fulcrum 6 fulcrum 7 fulcrum 8 link piece 9 link piece 10 guide plate 11 slide cutter 12 fixed blade 13 movable blade 14 fulcrum 15 fulcrum 16 fulcrum 17 fulcrum 18 link piece 19 link piece 21 Slide cutter 22 Fixed blade holder 23 Fixed blade 24 Movable blade holder 25 Movable blade 26 Support point 27 Support point 28 Support point 29 Support point 30 Link piece 31 Link piece 32 Long hole 33 Worm wheel 34 pin 35 Motor 36 Worm

Claims (1)

[Scope of utility model registration request] 1. A fixed blade or a fixed blade holder and a movable blade or a movable blade holder are connected near both ends with link pieces, and the link pieces are driven to cross the movable blade with the fixed blade. Slide cutter