JP2802350B2 - Cutting tool - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cutting tool for cutting a sheet-like workpiece into a fixed form.

[Prior art] Conventionally, commercially available cutters,
There are scissors. When using these cutting tools, a cutting tool is applied at a right angle to a sheet-like workpiece, and the cutting tools are moved along a processing line to perform cutting into a fixed shape.

[Problem to be Solved by the Invention] However, for example, when it is desired to cut only a specific page of an edited booklet into a fixed form, or in a liquid crystal film (1) shown in FIG. 4, one film-like transparent electrode layer ( 2u) If you want to perform processing to expose (2l),
In the former case, it is difficult to cut off only a specific page, and there is a risk that a lower page may be cut off unnecessarily. The latter case will be described in detail below with particular reference to FIGS. 5 (a), (b) and (c). In other words, the liquid crystal film (1) is composed of a pair of polyethylene terephthalate PET layers (3u) (3l)
Each of the inner surfaces is also coated with a pair of indium tin oxide ITO layers (2u) (2l) as a transparent electrode layer in the form of a film, and a liquid crystal layer (2l) is interposed between the two ITO layers (2u) (2l). 4) is interposed to form a multilayer. In the conventional processing method, first, FIG.
First, the cutter (5) is applied to the liquid crystal film (1) at a right angle, and a cut (7) is made along the processing line (6) to a desired depth. Next, as a second step, the upper part of the workpiece to the desired layer by hand (in this case, the upper PET layer (3u), the upper transparent electrode layer (2u), the liquid crystal layer (4)) (8u ) To the lower part of the workpiece (in this case,
Lower transparent electrode layer (2l) and lower PET layer (3l)) (8l)
After being separated using a cutter (5) or the like, the workpiece upper part (8u) is bent along the above-mentioned cut (7) as shown in FIG. As a third step,
As shown in FIG. 5 (c), after the above-described processing, the cutter (5) is inserted from the back surface of the work upper portion (8u) along the above-mentioned cut (7), and the cutting operation is completed. With such a processing method, the blade is hit at right angles to the sheet-shaped workpiece, so that it is difficult to adjust the cutting depth, and the lower transparent electrode layer (2
l) may be cut, or the two transparent electrode layers (2u) and (2l) may come into contact with each other at the time of cutting, and may not be used as the liquid crystal film (1).

Further, in this case, it is difficult to reliably form the cut portion in a straight line by using a general commercially available cutter. For these reasons, in the electrode exposure processing of the liquid crystal film (1), skill is required to perform an accurate and reliable operation.

In such a situation as described above, when performing such a cutting process, it is possible to solve the problem if it is possible to simultaneously cut and cut the sheet-like workpiece by inserting a blade almost parallel to the sheet. Become. That is, in the above-mentioned electrode exposure processing of the liquid crystal film, a blade is inserted into a boundary between an upper part of a workpiece and a lower part of the workpiece, and the blade is moved along the boundary, and further processed along a predetermined processing line. It suffices if there is one that can cut the upper part of the object.

The purpose of the present application is, even in the case of a multilayered sheet-like processed product,
An object of the present invention is to provide a cutting tool that can surely separate and cut a specific layer into a certain shape.

Means for Solving the Problems In order to achieve this object, a cutting tool according to the present invention includes a thin blade-shaped cutting tool near a bottom surface of a processing tool body having a main body guide surface for guiding the cutting tool in a processing direction. So that the abdomen is parallel or almost parallel to the bottom surface, and
The blade edge is directed to the processing direction side and is mounted so as to intersect at an acute angle with the processing direction, and further, a workpiece guide portion for determining a cutting position for cutting the sheet-shaped workpiece with respect to the blade edge is provided. It is characterized by having been done.

[Operation] When using this cutting tool, the bottom surface of the cutting tool body is used in contact with a sheet-like workpiece. That is, in this state, the thin blade-shaped blade mounted on the processing tool main body is disposed so as to be substantially parallel to the surface of the sheet-shaped workpiece with its blade edge directed toward the processing direction. Then, the end of the cut portion (for example, a specific page of a booklet or a specific upper layer portion of a liquid crystal film) in the sheet-like workpiece is arranged so as to come to the upper side of the thin blade-shaped blade. Then, a reference member having a desired cutting shape such as a ruler is brought into contact with a main body guide surface provided on the processing tool main body, and the cutting processing tool is guided and advanced along the reference member.
With this configuration, the cut portion of the sheet-shaped workpiece first attempts to move on the blade edge of the thin blade-shaped blade toward the processing tool main body. Here, the cutting position of the sheet-shaped workpiece with respect to the blade edge is set by the workpiece guiding portion, and the workpiece is cut at this position. In such a state, as the cutting tool advances, the cutting process can be advanced so that the cut portion is raised up to the upper part of the thin blade.

[Effects of the Invention] By using the cutting tool described above, a cutting tool is inserted almost in the sheet surface forming direction to cut the workpiece, and the cutting shape can be changed to a desired shape using the main body guide surface. It is possible to control the shape.

In addition, it is possible to separate and cut a specific layer of a sheet-like workpiece formed in a multilayer shape into a predetermined shape, and to make the cutting edge substantially parallel to the workpiece surface. The following layers do not scratch or cut the surface. Moreover, since the cutting tool itself is easy to operate, even non-experts can perform accurate and accurate processing. In particular, when this cutting tool is used for the above-described electrode exposure processing of the liquid crystal film, the electrode exposure can be performed without cutting the lower transparent electrode layer or unexpectedly connecting the two transparent electrode layers. Processing has become possible.

[Example] A cutting tool (10) of the present application will be described with reference to the drawings. First, the configuration of each part of the cutting tool (10) will be described below.

This cutting tool (10) has a rectangular parallelepiped processing tool body (11), a thin blade-shaped cutting tool (12) attached to it, and
A work guide member (13) as a work guide. The thin blade-shaped cutting tool (12) is arranged such that the bottom surface of the abdomen (14) as a long side thereof is flush with the bottom surface (15) of the processing tool main body (11) and the processing tool main body (11). ) So that it extends to one lateral side. The blade edge (16) of the thin blade-shaped blade (12) is in the processing direction (A)
To the side and at an acute angle (α) to the processing direction (A). With this configuration, the processing tool main body (11) and the thin blade-shaped blade (12) are integrated, and the bottom surface (15) and the abdomen (1) are integrated.
4) The bottom surface can be moved by abutting the sheet-like workpiece. On the other hand, in the processing tool main body (11), a second lateral side (11b) opposite to the first lateral side (11a) on the side where the above-mentioned thin blade-shaped cutting tool (12) extends extends along a straight line. The cutting tool (10) is formed in such a state that it functions as a main body guide surface and is brought into contact with a ruler (17) or the like to guide the cutting tool (10).

Next, the configuration of a portion where the cutting edge (16) of the above-mentioned thin blade-shaped blade (12) forms a cutting position (B) for cutting a part of the sheet-shaped workpiece will be described. This portion is formed as an intersection between the above-mentioned blade edge (16) and the workpiece guide member (13). That is, the workpiece guide member (13) is attached to the extension side of the thin blade-shaped blade (12), extends in the processing direction (A) from the lower surface of the thin blade-shaped blade (12), and has its tip (13).
The structure in which t) is located above the cutting edge (16) of the thin blade-shaped cutting tool (12) is adopted. The processing tool body (1
On the cutting direction side of 1), an arc-shaped tip holding portion (11t) is provided so as to hold the sheet-shaped workpiece.

Next, an example in which the above-described cutting tool (10) is used to perform the above-described electrode exposure processing of the liquid crystal film (1) will be described with reference to FIGS.

First, the liquid crystal film (1) will be described. This liquid crystal film (1) is also provided as a pair of transparent electrode layers on the inner surfaces of a pair of PET layers (3u) and (3l) arranged vertically as described above. An ITO layer (2u) (2l) is arranged, and a liquid crystal layer (4) is coated between the two ITO layers (2u) (2l) to form a multilayer. Here, the thickness of each layer is described as follows: PET layer (3u) (3l), ITO layer (2u)
(2l) and liquid crystal layer (4) are 175 microns and 600
Angstrom, about 20 microns, and the liquid crystal film (1) itself is about 0.2 mm. When no voltage is applied between these electrodes (2u) and (2l), the liquid crystal is randomly arranged due to the compressive force of the capsule wall, which is a component of the liquid crystal, and the light is dispersed. In this state, an electric field is generated in the liquid crystal layer (4), and the liquid crystal molecules rise, and the light is transmitted as it is to be in a transparent state.

In order to connect an electric terminal to each of the ITO films (2u) and (2l) of the liquid crystal film (1) so that a voltage can be applied, an electrode exposing process is required. As shown in FIGS. 3 and 4, it is necessary to expose the transparent electrode layers (2u) and (2l) linearly at both ends of the liquid crystal film (1). In this process, as shown in FIG. 4, the liquid crystal layer (4) is cut beyond the upper transparent electrode layer (2u) (2l) as viewed from the processing side, and the lower transparent electrode layer (2l) is cut. (2u)
It is the work of exposing.

In this process, first, the liquid crystal film (1)
The liquid crystal layer (4) in question and the lower transparent electrode layer (2l) are separated at the end (9) of the portion to be cut. Then, the tip of the thin blade (12) is inserted between the two layers (4) and (21) at the end (9). In addition, the main body guide surface (11
A ruler (17) is applied in a desired direction along b) to determine a processing direction (A). This state is shown in FIG.

Following this state, the cutting tool (10) of the present application is pushed along the ruler (17) while the ruler (17) is fixed. In this way, the upper workpiece (in this example, the upper PET layer (3u), the upper transparent layer) located on the side to be cut from the cutting position (B) due to the progress of the blade edge (16) in the processing direction (A). The electrode layer (2u), the liquid crystal layer (4)) (8u) are the lower workpiece (in this case, the lower transparent electrode layer (3l) and the lower PE
Following this, it separates from the T-layer (3l)) (8l) and rolls up above the cutting edge (16). Simultaneously with this operation, the upper workpiece (8u) is cut along the processing direction (A) at the above-described cutting position (B). Thus, the cut surface (C) can be cut into a predetermined shape with the lower transparent electrode layer (2l) securely exposed. This state is shown in FIG. In this case, the cutting operation is performed only by the pressing operation of the cutting tool of the present application, so that the operation can be efficiently and accurately performed.

[Another Embodiment] In the above embodiment, an example in which the cutting is performed by the pressing operation of the cutting tool (10) has been described, but this may be performed by a pulling operation. In this case, a thin blade (12)
Is in a direction opposite to the above-described example.

Furthermore, as an example of the cutting process, an example in which a thin film member (liquid crystal film) formed in a multilayer shape is processed up to an intermediate layer thereof has been described. Of course, it can also be used to cut the entire sheet along its cutting plane (C) in its thickness direction.

Further, the workpiece guide portion (13) may be fixedly formed on either the thin blade-shaped cutter (12) or the processing tool main body (11), and may be integrally provided from the processing tool main body (11). Is also good.

Further, the thin blade-shaped cutting tool (12) does not need to be provided flush with the bottom surface (15) of the processing tool body (11), but may be mounted near the bottom surface so as to satisfy a predetermined requirement. . Further, it is possible to adopt a structure in which the thin blade-shaped blade (12) can be replaced, and a structure in which a used blade is cut and removed.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a perspective view of the cutting tool of the present application, and FIG.
Is a diagram showing a state at the start of use of the cutting tool, FIG. 2 (b) is a diagram showing a state of using the cutting tool, and FIG.
The figure is a perspective view of the processed liquid crystal film, FIG. 4 is a view of the liquid crystal film in a used state, and FIGS. 5 (a), (b) and (c).
Is a process drawing of a conventional processing step. (10) Cutting tool, (12) Thin blade, (13)
…… Work guide member, (A)… Work direction, (B)…
Cutting position, (1) ... liquid crystal film

────────────────────────────────────────────────── (5) References JP-A-1-113086 (JP, A) JP-A-55-8716 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B26B 3/08

Claims (6)

(57) [Claims] 1. A cutting tool for cutting a sheet-like workpiece into a fixed form, wherein a bottom surface of a processing tool body (11) having a body guide surface (11b) for guiding the cutting tool in a processing direction (A). 15) A thin blade-shaped blade (12) is placed near the abdomen (14) so that the abdomen (14) is parallel or almost parallel to the bottom surface (15).
And, the blade edge (16) is mounted so that it faces the processing direction (A) side and crosses the processing direction (A) at an acute angle (α). A cutting tool provided with a workpiece guide (13) for determining a cutting position (B) for cutting the sheet-shaped workpiece. 2. The thin blade-shaped knife (12) has an abdomen (14).
The cutting tool according to claim 1, wherein a lower surface of the cutting tool is mounted and fixed to a bottom surface (15) of the processing tool body (11) so as to be flush with the bottom. 3. The work guide portion (13) extends from the lower surface side of the thin blade-shaped blade (12) so that its tip (13t) is located above the blade edge (16). And the cutting position (B) is set at the cutting edge (1).
3. The cutting tool according to claim 2, wherein the cutting tool is formed at a position where the workpiece guide section intersects with the workpiece guide section. 4. The cutting device according to claim 1, wherein said workpiece guide portion (13), which is a member separate from said processing tool body (11), is fixed to said thin blade-shaped blade (12). Processing tools. 5. The cutting device according to claim 1, wherein the workpiece guide portion (13), which is a member separate from the processing tool body (11), is fixed to the processing tool body (11). Processing tools. 6. A cutting tool according to claim 1, wherein said workpiece guide portion (13) is integrally connected to said tool body (11).