JPH06198594A - Cutter and cutting plotter using it - Google Patents

Abstract

PURPOSE:To certainly cut sheets to be cut without exfoliating any sheet in a necessary part simultaneously in the case of exfoliating a sheet in an unnecessary part. CONSTITUTION:In the tip 73 of a cutter 70, two cutting blades whose backs 74 are so set as to face each other with the central axis as a center are formed with their insides bent in respectively and the tips 75 of both blades are formed in their mulually connected state. The blade tips 75 are forced to be eccentric from the central axis by a predetermined distance so that they can move by following the central axis. In the case of a cutting blade 76 for cutting sheets to be cut its longitudinal section, which crosses the cutting direction at right angles, is formed into V-shape. And in the cutting blade 76, a chip discharge hole which penetrates the central part in the cutting direction is constituted along the back 77.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter for cutting a cutting sheet into figures, characters or symbols (hereinafter simply referred to as "figures") of any shape, and a cutting plotter using the cutter. .

In general, a cutting plotter has been widely used which cuts a cutting sheet into a figure having an arbitrary shape by moving a cutter relative to the cutting sheet in the XY directions by computer control.

In such a cutting plotter, the cutting edge is eccentric from the central axis by a predetermined distance to rotatably hold the cutter in a cutter holder, which is relatively moved in the XY directions with respect to the cutting sheet. The cutting sheet is supported by a driving device that moves to the position, and is cut by a computer control into a figure having an arbitrary shape.

As an example of such a cutting plotter, FIG. 5 shows the structure of a paper move type cutting plotter. As shown in the figure, the cutting plotter 1 includes a cutting pen 2 to which a cutter is attached, and a driving device 7 that moves the cutting pen 2 in the Y direction. Further, the cutting pen 2 is supported by an elevating mechanism 4 with a screw 3 and is driven in the Z direction by driving the elevating mechanism 4. Reference numeral 6 denotes a Y rail supported by the side covers 5 and 5 ', along which the drive device 7 moves in the Y direction.
Reference numerals 8 and 8 ′ are a pair of pinch rollers arranged at both ends of the Y rail 6, and the pair of grid rollers 10, 10 ′ arranged at both ends of the bed 9 are pressed to hold the cutting sheet 11 for cutting. Sheet 11 for X
It is designed to be conveyed in the direction.

That is, in the cutting plotter 1, the driving device 7 is moved to the Y position with the cutting pen 2 lowered.
Sheet 11 for cutting while moving in the direction
Is moved in the X direction to cut the cutting sheet into a figure having an arbitrary shape.

As a cutter used in such a cutting plotter 1, when the blade tip is eccentric from the central axis by a predetermined distance and attached to the cutter holder, it becomes rotatable and the cutter is easily replaced. There is used a cutter that can be attached to and detached from the holder and can always project the blade edge from the cutter holder by a predetermined length. FIG. 6 shows an example of the configuration of a cutting pen to which such a cutter is attached.

As shown in the drawing, the cutter holder 21 has a cylindrical holder member 23 having an inner peripheral portion 22 extending substantially in the same diameter over the central axis direction, and the holder member 2 is provided at the substantially center thereof.
Disk-shaped magnet 2 so as to make circumferential contact with the inner peripheral portion 22 of
5 is arranged, and the pivot bearing 27 is integrally attached to the magnet 25 by magnetically attracting the lower surface of the magnet 25. The magnet 2
On the upper surface of 5, a backup member 29 is arranged with its peripheral surface fixed to the inner peripheral portion 22 of the holder member 23. The backup member 29 is made of a metal capable of attracting the magnet 25, so that the magnet 25 and the pivot bearing 27 are fixed at predetermined positions in the cutter holder 21. The outer peripheral portion 24 of the magnet 25 and the outer peripheral portion 26 of the pivot bearing 27 are in circumferential contact with the inner peripheral portion 22 of the holder member 23. Further, the lower end portion 3 in the inner peripheral portion of the holder member 23
0 is formed in a concave portion 31 having a diameter larger than that of the inner peripheral portion 22 on the upper side, and a miniature bearing 32 is arranged in the concave portion 31.

The base end 41 of the 40 has a conical shape,
The distal end portion 42 is a cutter formed as a marking blade (knife) with the cutting edge 43 oriented in the cutting direction, the base end portion 41 is rotatably supported by the pivot bearing 27, and the lower side peripheral surface is a miniature bearing 32. It is detachably mounted in the cutter holder 21 while being supported by the. The upper surface of the cutter 40 is made of a magnetic metal, and therefore, the upper magnet 25 urges the cutter 40 upward. Also, this cutter 40
The cutting edge 4 moves so that the cutting edge 44 can move following the central axis.
4 is eccentric by a predetermined distance from the central axis.

In the above construction, when the cutting pen 2 is moved by the drive unit 7 of the cutting plotter 1 along each line segment forming a figure of an arbitrary shape, the cutter 40 naturally rotates in the direction along the line segment. Then, the cutting sheet 11 can be cut into a figure having an arbitrary shape.

FIG. 7 shows an example of a cutting sheet 11 cut by the cutting plotter 1 having the above-mentioned cutter, and FIG. 7 (a) is a plan view showing an example in which “phrases” are cut, ) Is an enlarged sectional view of the cutting sheet showing the cut state.

In the cutting sheet 11, generally, a sheet 50 in which an adhesive layer 52 is laminated on one side of a sheet layer 51 such as a synthetic resin sheet, a rubber sheet or a paper sheet.
Is used in which the adhesive layer 52 is laminated so as to face the release paper 53.

By the way, the cutting plotter 1 is set so that the cutter pressure is adjusted by the drive unit 7 so that the cutting edge 44 of the cutter 40 reaches the release paper 53 of the cutting sheet 11 but does not cut through the release paper 53.
The cutting sheet 11 cut into a figure having an arbitrary shape by the cutting plotter 1 in such a state is cut as shown in FIG.
As shown in FIG. 5, it is divided into a necessary portion 54 (for example, a graphic portion) and an unnecessary portion 55 (for example, a portion other than the graphic). Then, the sheet 50 of the unnecessary portion 55 is peeled from the release paper 53 by hand or machine, and the sheet 50 of the necessary portion 54 is used after being copied from the release paper 53 by an application sheet (not shown). The application sheet has an adhesive layer having a relatively weak adhesive force on one side.

[0013]

However, in the cutting sheet 11 cut into a figure of an arbitrary shape, particularly when the area of the sheet 50 of the necessary portion 54 is small, the sheet 50 of the unnecessary portion 55 is removed from the release paper 53. At the time of peeling, the necessary portion 5 together with the sheet 50 of the unnecessary portion 55
The sheet 50 of No. 4 was sometimes peeled off.

Therefore, the sheet 50 of the unnecessary portion 55 must be peeled from the release paper 53 while the sheet 50 of the necessary portion 54 is pressed against the release paper 53 with tweezers or the like. The workability at was extremely poor.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to surely cut a cutting sheet so that when a sheet of an unnecessary portion is peeled off, the sheet of a necessary portion is not peeled off at the same time. The object is to provide a cutter that can be used and a cutting plotter using the cutter.

[0016]

In order to achieve the above object, the cutter according to the present invention is such that the blade tip is eccentric by a predetermined distance from the central axis, and the vertical cross-sectional shape orthogonal to the cutting direction of the cutting blade is substantially V-shaped. And the central portion of the substantially V-shaped cutting blade is formed as a chip discharge hole penetrating in the cutting direction. Further, in the cutting plotter according to the present invention, the cutter is supported by a driving device that moves relative to the cutting sheet in the XY direction, and the cutting sheet is cut into a figure of an arbitrary shape by computer control. Is configured as follows.

[0017]

When the cutting sheet is cut into a figure of an arbitrary shape, the sheet at the cut portion is scraped off by the cutting blade formed in a substantially V shape, so that the necessary portion sheet and the unnecessary portion sheet are completely removed. Be cut free. Therefore, when the sheet of the unnecessary portion is peeled from the release paper, the sheet of the necessary portion is not peeled together with the sheet of the unnecessary portion.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. The same components as those of the above-described conventional cutter and the cutting plotter using the same are denoted by the same reference numerals, and detailed description of the configuration and operation will be omitted.

FIG. 1 shows a cutting pen using a cutter according to an embodiment of the present invention, and FIG. 2 shows the cutter.

The cutting pen 60 shown in FIG.
The cutter 70 shown in FIG. 2 is attached to the conventional cutter holder 21 shown in FIG. Therefore, only the configuration of the cutter 70 is different from that of the conventional cutting pen 2, and the detailed description of the cutter holder 21 is omitted.

In FIG. 2, (a) is an enlarged front view of the tip of the cutter as viewed from the cutting direction, (b) is a side view of the cutter shown in (a), and (c) is ( a)
The rear view of the cutter shown in FIG. 3 and the bottom view of the cutter shown in (b) are shown in (d).
2A is a perspective view of the cutter viewed from the direction of the arrow A in FIG. 2A, and FIG. 2B is a perspective view of the cutter viewed from the direction of the arrow B of FIG. 2C. ing.

As shown in the drawing, the cutter 70 has a base end 72 formed in a conical shape at the upper end of a round bar-shaped cutter body 71 so as to be rotatably supported by the pivot bearing 27 ( (See FIG. 1), a tip end portion 73 for cutting the cutting sheet is formed at the lower end.

At the tip portion 73, two marking blades, which are provided so as to face each other around the central axis of the blade back 74, are formed by being bent inward, and the blade tips 75 of both blades are connected to each other. Has been formed. The cutting edge 75 is eccentric by a predetermined distance t from the central axis so that the cutting edge can move following the central axis as in a conventional cutter. The cutting blade 76 for cutting the cutting sheet has a V-shaped vertical cross-section that is orthogonal to the cutting direction. Further, the cutting blade 76 is provided with a chip discharging hole 78 penetrating the central portion in the cutting direction over the back portion 77 of the blade. still,
You may form a front-end | tip part by using a thick material and cutting off the inside of the cutting edge 76 leaving the part.

Although the construction of the cutter used for the cutting pen is shown above, any cutting plotter provided with a cutter holder may be directly attached.

In the above construction, the cutter used for the cutting plotter or cutting pen is
It produces a different action on the cutting sheet.

When a cutting pen using the above-mentioned cutter is moved along each line segment forming a figure of an arbitrary shape by the drive device of the cutting plotter, it naturally moves in the direction along the line segment as in the conventional cutting pen. The cutter rotates to cut the cutting sheet into a figure having an arbitrary shape. However, the cutting state of the cutting sheet is completely different from the conventional cutting state.

FIG. 4 shows an example of a cutting sheet cut by a cutting plotter having the above-mentioned cutter. FIG. 4 (a) is a plan view showing an example of cutting “phrases”, and FIG. 4 (b) is a plan view. Is an enlarged sectional view of the cutting sheet showing the cut state. The same components as those of the conventional cutting sheet described above are designated by the same reference numerals, and detailed description of the configuration and operation is omitted.

As can be seen by comparison with reference to FIG. 7, which shows an example of a cutting sheet cut by a cutting plotter with a conventional cutter,
The cutting state of the conventional cutting sheet 11 is such that the sheet 50 of the necessary portion 54 and the sheet 50 of the unnecessary portion 55 are in contact with each other, whereas the cutting state of the cutting sheet 11 of the embodiment is Is cut with the sheet 50 of the required portion 56 and the sheet 50 of the unnecessary portion 57 separated from each other.

That is, since the conventional cutter is a printing blade, the sheet layer 51, the adhesive layer 52, and a part of the release paper 53 are only cut perpendicularly to the surface of the cutting sheet 11, whereas in the embodiment, Since the cutter 70 has the cutting blade 76 so that the vertical cross-sectional shape orthogonal to the cutting direction is V-shaped, as shown in FIG. 4B, the cut portion of the cutting sheet 11 is cut. A V-shaped groove trace 58 is formed on the groove.

As a result, when the conventional cutting pen is used in the cutting sheet 11 that is cut into figures of arbitrary shape, the sheet 50 of the necessary portion 54 and the sheet 50 of the unnecessary portion 55 are in contact with each other after cutting. Since the state is in the state, when the sheet 50 of the unnecessary portion 55 is peeled from the release paper 53, the sheet 50 of the necessary portion 54 may be peeled together with the sheet 50 of the unnecessary portion 55. When the cutting pen 60 of the example is used, the sheet 50 of the unnecessary portion 57 and the sheet 50 of the unnecessary portion 57 are completely separated from each other, and thus the sheet 50 of the unnecessary portion 57 is peeled from the release paper 53. When
The sheet 50 of the unnecessary portion 57 and the sheet 50 of the necessary portion 56 are not separated from each other.

As described above, in the cutting sheet 11 cut by the cutter and the cutting plotter using the cutter, only the sheet 50 of the unnecessary portion 57 can be easily peeled off from the release paper 53, and the unnecessary portion 57 is removed. The workability in the peeling operation of the sheet 50 is extremely good.

Next, the function and effect of the chip discharging hole 78 shown in the structure of the cutter 70 will be described.

When the cutting sheet 11 is cut into a figure having an arbitrary shape by the cutter 70, a part of the cutting sheet 11 is scraped off by the V-shaped cutting blade 76 to generate linear chips. To do. When continuously cutting a certain distance or more, the chips generated by the cutting may be spirally accumulated in the central portion of the cutting blade 76 and may not be cut.

The chip discharging hole 78 of the cutter is provided for discharging chips generated by cutting. That is, the chips of the cutting sheet 11 cut by the cutter 70 are sequentially extruded rearward as the cutter 70 moves, and are discharged from the chip discharge holes 78. As a result, it is possible to continuously cut a long distance without the chips generated by the cutting being accumulated in the central portion of the cutting blade 76.

It should be noted that the chips generated by cutting with the cutter are likely to form a spiral shape, and therefore the chip discharging hole 78 of the cutter is preferably as large as possible, but it is provided with a shape and a size through which the chips can be inserted. Anything is fine. Further, the shape of the cutting edge of the cutter may be V-shaped in the vertical cross-section orthogonal to the cutting direction, or may be U-shaped as long as the cut portion of the cutting sheet 11 is groove-shaped. Furthermore, although the cutter used in the cutting plotter is described in the above embodiment, the present invention is not limited to this, and the cutter may be held by hand and used.

[0036]

Since the cutting edge of the cutter of the present invention is formed in a substantially V-shape in the vertical cross section orthogonal to the cutting direction, the cutting sheet cut by this cutter is unnecessary from the necessary sheet. The part of the sheet is completely separated. Therefore, when the sheet of the unnecessary portion is peeled from the release paper, the sheet of the necessary portion is not peeled together with the sheet of the unnecessary portion, and the peeling operation is facilitated. Furthermore, since the cutting edge is provided with a chip discharging hole 78 that penetrates the central portion in the cutting direction, the chips generated by cutting do not accumulate in the central portion of the cutting blade, and a long distance can be continuously applied. Can be cut. Also,
When this cutter is used for a cutting plotter, it becomes possible to efficiently draw a figure having a wide cutting line.

[Brief description of drawings]

FIG. 1 is a semi-longitudinal sectional view of a cutting pen using a cutter according to an embodiment of the present invention.

FIG. 2 is an enlarged explanatory view of an essential part showing an example of a cutter of the present invention, (a) is a front view, (b) is a side view, (c) is a rear view, and (d) is a bottom view.

3 is a perspective view of the cutter shown in FIG. 2, FIG.
2A is a diagram viewed from the A direction, and FIG. 2B is a diagram viewed from the B direction of FIG. 2C.

FIG. 4 is an example of a cutting sheet cut by a cutting plotter having a cutter of the present invention, (a) is a plan view showing an example in which “phrases” are cut,
FIG. 6B is an enlarged cross-sectional view of a main part showing the cut state.

FIG. 5 is a perspective view of a paper move type cutting plotter.

FIG. 6 is a semi-longitudinal sectional view of a cutting pen using a conventional cutter.

FIG. 7 is an example of a cutting sheet cut by a cutting plotter having a conventional cutter,
FIG. 7A is a plan view showing an example in which “phrases” are cut, and FIG.

[Explanation of symbols]

 1 Cutting Plotter 2 Cutting Pen 3 Screw 4 Lifting Mechanism 5, 5'Side Cover 6 Y Rail 7 Drive Device 8, 8'Pinch Roller 9 Bed 10, 10 'Grid Roller 11 Cutting Sheet 21 Cutter Holder 22 Inner Circumference 23 Holder Member 24 Outer peripheral portion 25 Magnet 26 Outer peripheral portion 27 Pivot bearing 28 Outer peripheral portion 29 Backup member 30 Lower end portion 31 Recessed portion 32 Miniature bearing 40 Cutter 41 Base end portion 42 Tip portion 43 Cutting blade 44 Blade edge 50 Sheet 51 Sheet layer 52 Adhesion layer 53 Separation Paper pattern 54 Necessary part 55 Unnecessary part 56 Necessary part 57 Unnecessary part 58 Groove mark 60 Cutting pen 70 Cutter 71 Cutter body 72 Base end part 73 Tip part 74 Back side 75 Blade edge 76 Cutting edge 77 Back part 78 Chip discharge Hole

Claims (2)

[Claims] 1. The cutting edge is eccentric by a predetermined distance from the central axis to form a vertical cross section perpendicular to the cutting direction of the cutting blade in a substantially V shape, and the central portion of the substantially V shaped cutting blade is formed. A cutter characterized by a chip discharge hole that penetrates in the cutting direction. 2. A cutting device for supporting a cutter on a driving device that moves relative to the cutting sheet in the XY directions, and cutting the cutting sheet into figures, characters or symbols of any shape by computer control. A plotter as the cutter according to claim 1.
A cutting plotter characterized by using the cutter described in 1.