JPH1015879A - Cutting blade and cutting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform cutting without producing debris of peeled layers by forming an edge part where a round surface, whose radius in contact with a vertical plane and with a slope crossing the vertical plane at a specific range of angles is specified to be not more than the thickness of a subject to be cut, from which radius the crossing line between the vertical plane and the slope is removed, is used as the surface to be pressed into contact with the subject to be cut. SOLUTION: A cutting blade 1 made of steel, ceramic, etc., is lowered by a lift means in the perpendicular direction onto the lower surface of a chopping board member made of a synthetic resin, wood, etc., and a subject 3 to be cut is sandwiched between the cutting blade 1 and the chopping board member 2 and cut. Therefore in the cutting blade 1, a vertical plane 1a that is approximately parallel to the lowering direction and a slope 1 with an angle of 15 to 40 deg. to the vertical plane 1a are set, and the cutting blade 1 is made to have a round surface 1c whose radius in contact with time vertical plane 1a and the slope 1b is half or less the thickness of the subject 3 to be cut. The round surface 1c is formed at an edge part where the round surface 1c serves as the surface to be pressed into contact with the subject 3 to be cut. Therefore, cutting can be performed without producing debris of peeled layers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting blade and a cutting method for cutting a body to be cut by pressing the body with an opposing surface.
In particular, the present invention relates to a cutting blade and a cutting method suitably used for cutting a laminate composed of a plurality of layers having different elongation elastic moduli at right angles to the surface of the laminate.

[0002]

2. Description of the Related Art A conventional cutting blade for cutting the above-mentioned laminated body at right angles to the lamination surface is a conventional cutting blade which has a vertical surface substantially parallel to the cutting movement direction and an angle in the range of 15 to 40 ° with the vertical surface. The cutting method using the two cutting surfaces is a cutting surface made of a synthetic resin, rubber, wood, or the like. This is a method in which each layer is placed so as to be substantially parallel to the surface of the cutting board member, and the laminate is pressed by the cutting blade and the cutting board member so that the vertical surface of the cutting blade is substantially perpendicular to the surface of the cutting board member.

[0003]

According to the above-described cutting method using a conventional cutting blade, a laminate comprising a plurality of layers having different elongation elastic moduli, such as a photographic film comprising a laminate of a PET film and a gelatin layer. When the laminated body is cut at right angles to the laminated surface, delamination occurs on the cut surface of the laminated body, and the peeled gelatin layer pieces become scum and adhere to various places or mix into the product side. There is a problem that it is easy to cause troubles.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a laminate comprising a plurality of layers having different elongational elasticities, such as a photographic film, is delaminated on a cutting surface, and is thus delaminated. It is an object of the present invention to provide a cutting blade and a cutting method that can be cut without causing scum of a layer piece.

[0005]

Means for Solving the Problems The inventors of the present invention have repeatedly studied the shape of the tip of the cutting blade which solves the above-mentioned problems, and as a result, the tip of the conventional cutting blade except for the leading edge has a tip perpendicular to the tip. The radius contacting the surface and the slope is 1 / th of the thickness of the cut body
By providing a C-plane having an R width of 2 or less, or a width in the perpendicular direction parallel to the leading edge and perpendicular to the vertical surface of the leading end, which is 以下 or less of the thickness of the cutting body, the cut body becomes a PET film. It has been found that even with a photographic film comprising a laminate of gelatin layers, delamination does not occur on the cut surface, and therefore no debris is generated on the gelatin layer pieces.

The present invention has been made based on the above-mentioned knowledge of the present inventors. In a cutting blade for cutting a body to be cut by pressing the same with an opposing surface, the cutting blade is substantially perpendicular to the opposing surface. A vertical surface substantially parallel to the cutting movement direction
A slope that intersects at an angle in the range of 5 to 40 °, and a radius contacting the vertical surface and the slope that removes a portion having an intersection line between the vertical surface and the slope is a half or less of the thickness of the cut body. The three surfaces of the R-face or the front end portion C surface, which is substantially parallel to the intersection line and substantially perpendicular to the vertical surface and whose width in the orthogonal direction is equal to or less than の of the thickness of the cut body, are pressed against the cut body. A cutting blade characterized by having a cutting edge portion, a vertical surface substantially parallel to the cutting movement direction, a slope intersecting the vertical surface at an angle in the range of 15 to 40 °, and the vertical surface and the slope The radius in contact with the vertical surface and the slope that removes the portion having the intersection line is an R surface that is 以下 or less of the thickness of the cut body or the orthogonal surface that is substantially parallel to the intersection line and substantially orthogonal to the vertical surface. It has a cutting edge portion in which three surfaces of the front end portion C surface whose width in the direction is 1/2 or less of the thickness of the cut body are pressed against the cut body. By using a cutting blade, a plurality of layers each having a different elasticity from each other and placed on the cutting board member are stacked on the cutting board member. The cutting method is characterized in that the cutting is performed by pressing with a cutting blade and a cutting board member in a state where the surface is substantially perpendicular to the surface of the cutting board member.

That is, according to the cutting blade and the cutting method of the present invention, the cutting blade has a vertical surface substantially parallel to the cutting movement direction, and
A slope that intersects at an angle in the range of 5 to 40 °, and a radius contacting the vertical surface and the slope that removes a portion having an intersection line between the vertical surface and the slope is a half or less of the thickness of the cut body. The three surfaces of the R-face or the front end portion C surface, which is substantially parallel to the intersection line and substantially perpendicular to the vertical surface and whose width in the orthogonal direction is equal to or less than の of the thickness of the cut body, are pressed against the cut body. With a cutting edge part
The vertical surface of the cutting blade is cut at a right angle to the surface of the laminate of the laminate by cutting the laminate with the cutting blade and the cutting board member, so that the laminate is formed by laminating a plurality of layers having different elongation elastic moduli. Even if it does, delamination does not occur on the cut surface, and therefore, there is no problem that scum of the release layer piece is generated and adheres to the cutting machine or the product.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing an embodiment of a cutting method using a cutting blade of the present invention having a front end formed on an R surface, and FIG. 2 is a cutting view using a cutting blade of the present invention having a front end formed on a C surface. It is a side view which shows the implementation state of a method.

In the drawing, 1 is a cutting blade made of steel, ceramic, or the like, 2 is a cutting board member made of synthetic resin, rubber, wood, or the like, and 3 is a 0.1 mm-thickness placed on the cutting board member 2, for example. PET film 31 and thickness 10μ
This is a cut body of a laminate of a plurality of layers having different elongation elastic moduli, such as a photographic film formed by laminating a gelatin layer 32 having a thickness of m and an adhesive layer 33 having a thickness of several μm therebetween. is there.

The cutting blade 1 is lowered in the direction of an arrow perpendicular to the upper surface of the cutting board member 1 by lifting means (not shown), and presses the cutting body 3 with the cutting board member 2 to cut it. Therefore, the cutting blade 1 in FIG. 1 has a vertical surface 1a substantially parallel to the above-described descending direction, and an angle between the vertical surface 1a and the vertical surface 1a is 15 to 40 °, preferably 20 to 30 in terms of durability and a wide range of adaptability. The radius of the slope 1b in the range of °, the vertical surface 1a and the radius in contact with the slope 1b is 以下 or less of the thickness of the cut body 3, preferably the thickness of the cut body 3 in terms of durability and flexibility. 0.05 to 0.
The cutting blade 1 shown in FIG. 2 has a cutting edge 1 having a one-time radius R surface 1c as a pressure contact surface against the cut body 3, and has a similar vertical surface 1a, inclined surface 1b, and vertical surface instead of the R surface. Surface 1a and slope 1b
Is parallel to the cross line of the cutting member 2, that is, parallel to the upper surface of the cutting board member 2, and orthogonal to the vertical surface 1a and intersecting with the inclined surface 1b is equal to or less than の of the thickness of the cut body 3, and preferably has a wide range of durability and adaptability. C-plane 1 in a range of 0.05 to 0.1 times the thickness of the cut body 3 from the point
It has a cutting edge portion where d is a press contact surface with the cut body 3.

If the angle formed by the vertical surface 1a and the inclined surface 1b of the cutting edge of the cutting blade 1 is greater than 15 °, the durability deteriorates. Conversely, if it exceeds 40 °, the shape of the cut surface deteriorates. If the radius of the R surface 1c or the width of the C surface 1d is smaller than 0.05 times the thickness of the cut body 3, the cut surface is likely to be delaminated, and the thickness of the cut body 3 is １ ／. If it becomes larger, the shape of the cut surface becomes worse.

The cutting blade 1 as described above is pushed down in the direction of the arrow until the R surface 1c or C surface 1d at the tip reaches the surface of the cutting board member 2 or less, so that the cut body 3 is delaminated on the cutting surface. Without cutting, and thus without the generation of scum on the release layer pieces.

[0014]

As described in detail above, according to the cutting method using the cutting blade of the present invention, a plurality of layers having different elongation elastic moduli, such as a photographic film composed of a PET film and a gelatin layer, are used. Even a laminate consisting of laminates,
An excellent effect is obtained in that delamination does not occur on the cut surface, and therefore, there is no problem of generation of scum of the release layer piece and adhesion to the cutting machine or product.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a cutting method using a cutting blade of the present invention having a front end formed on an R surface.

FIG. 2 is a side view showing an embodiment of a cutting method using a cutting blade of the present invention having a tip formed on a C surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting blade 1a Vertical surface 1b Slope 1c R surface 1d C surface 2 Cutting board member 3 Cutting body

Claims (4)

[Claims] 1. A cutting blade for cutting a body to be cut by pressing it against an opposing surface, comprising: a vertical surface substantially perpendicular to the opposing surface and substantially parallel to a cutting movement direction; 40 °
The slope that intersects the angle of the range, and the radius in contact with the vertical surface and the slope that removes the portion having the intersection of the vertical surface and the slope has an R surface that is １ ／ or less of the thickness of the cut body or the R surface. A cutting edge portion in which three surfaces of a front end portion C surface, which is substantially parallel to the crossing line and has a width in the orthogonal direction substantially perpendicular to the vertical surface and equal to or less than の of the thickness of the cut body, is a pressure contact surface with the cut body. A cutting blade characterized by having: 2. The angle between the vertical surface and the inclined surface of the cutting edge portion of the cutting blade is a value in the range of 20 ° to 30 °, and the radius of the R surface or the width in the direction substantially perpendicular to the vertical surface of the C surface is covered. The cutting blade according to claim 1, wherein the thickness is in a range of 0.05 to 0.1 times the thickness of the cutting body. 3. A vertical plane substantially parallel to a cutting movement direction, a slope intersecting the vertical plane at an angle in a range of 15 to 40 °, and a part having an intersection line between the vertical plane and the slope is removed. The radius in contact with the surface and the slope is not more than の of the thickness of the cut body, or the width in the orthogonal direction that is substantially parallel to the intersection line and substantially perpendicular to the vertical plane is the thickness of the cut body. Using a cutting blade having a cutting edge portion with three surfaces of the tip C surface of の or less being a pressure contact surface against the cut body, each of a plurality of layers having different elongation elastic moduli placed on a cutting board member is different from each other. The cutting body of the laminated body composed of the laminate substantially parallel to the surface of the cutting board member is cut by pressing the cutting blade and the cutting board member with the vertical surface of the cutting blade substantially orthogonal to the surface of the cutting board member. Cutting method characterized by the above-mentioned. 4. The angle between the vertical surface and the inclined surface of the cutting edge portion of the cutting blade is a value in the range of 20 to 30 °, and the radius of the R surface or the width in the direction substantially perpendicular to the vertical surface of the C surface is covered. 4. The cutting method according to claim 3, wherein the thickness is in the range of 0.05 to 0.1 times the thickness of the cutting body.