Cutting tool mechanism for cutting test base material into test piece, and test piece cutting device

Abstract

To provide a cutting tool mechanism for cutting a test piece with higher accuracy, and a cutting device including the cutting tool mechanism.SOLUTION: A cutting tool mechanism for cutting a test base material 6 by a press mechanism 70 includes a base plate 3 fixed to the press mechanism 70, and a punching blade 1 which is connected to the base plate 3, and has a plurality of cylindrical blades 10 for cutting a plurality of test pieces 7 from the test base material 6, wherein the punching blade 1 has the plurality of cylindrical blades 10 arranged in a width direction of the cylindrical blade 10, and the cylindrical blade 10 has a cutting edge 10a for punching and cutting the test base material 6 into the test pieces 7 on its lower end edge, and cuts the test pieces 7 so that each of the cylindrical blades 10 cuts a test region 7X into a fixed lateral width (W) from the test base material 6 while setting the shape of the cutting edge 10a as a contour of each of the test pieces 7 to be cut.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a blade mechanism for cutting sheet- or plate-shaped test substrates such as plastics or rubber into test pieces to be used in tensile tests, impact tests, etc., and to a test piece cutting device equipped with this blade mechanism. [Background technology]

[0002] Materials used for various purposes undergo various tests such as tensile tests and impact tests based on standards and specifications such as ISO and JIS. Test substrates are cut to dimensions that meet the thickness and outer shape standards and are used for various tests such as tensile tests. For example, rubber used in tires is made into a sheet-like test substrate of a specified thickness and then cut into dumbbell-shaped test pieces for tensile tests and impact tests.

[0003] The present inventors have been developing blade mechanisms and cutting devices (blade mechanisms, etc.) for punching and cutting test pieces from test substrates (see, for example, Patent Document 1). Blade mechanisms, etc., which cut test pieces one by one from test substrates, have the advantage of being able to cut at a predetermined position on the test substrate. However, blade mechanisms, etc., which are connected to a press mechanism via a connecting portion provided on the upper surface of a base plate, have the problem of slight tilt or wobble occurring in the cutting edge of the cylindrical blade when punching the test substrate. In particular, for test pieces that require dimensional accuracy and test substrates where materials are rapidly evolving, slight tilt or wobble occurring in the cutting edge of the cylindrical blade affects the movement and direction of the cutting edge, leading to a decrease in the dimensional accuracy of the test piece cutting and ultimately affecting the results of various tests. Therefore, preventing or suppressing this is an extremely important issue. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-066073 Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure has been developed with the aim of further eliminating the above-mentioned drawbacks, and one of the objects of the present disclosure is to provide a blade mechanism that cuts test pieces with greater precision and a cutting device equipped with this blade mechanism. [Means for solving the problem]

[0006] A blade mechanism according to one aspect of the present disclosure is a blade mechanism that cuts a test substrate using a press mechanism, and includes a base plate fixed to the press mechanism, and a punching blade connected to the base plate and having a plurality of cylindrical blades that cut a plurality of test pieces from the test substrate, the punching blade arranging the plurality of cylindrical blades in the width direction of the cylindrical blade, the cylindrical blade having a cutting edge at its lower edge that punches and cuts the test substrate into test pieces, and the shape of the cutting edge is the outer shape of each test piece to be cut, and each cylindrical blade cuts test pieces from the test substrate with a test area having a constant width (W).

[0007] A test piece cutting device according to another aspect of the present disclosure includes the blade mechanism described in the above aspect, a receiving stand having a cutting surface on which the test substrate to be cut into test pieces is placed and cut, and a press mechanism that presses the blade mechanism against the test substrate placed on the cutting surface. [Effects of the Invention]

[0008] The above-described blade mechanism and the cutting device equipped with this blade mechanism have the advantage of being able to cut test pieces with higher precision. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a schematic perspective view of a blade mechanism according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the blade mechanism shown in FIG. [Figure 3] FIG. 10 is a schematic perspective view of a blade mechanism showing an example of an outer plate, as viewed from below. [Figure 4] FIG. 10 is a schematic plan view from below of a blade mechanism showing another example of an outer plate. [Figure 5] 2 is a schematic plan view showing an example of a test substrate and a test piece cut by the blade mechanism of FIG. 1. FIG. [Figure 6] FIG. 6 is a partial vertical longitudinal sectional view of the blade mechanism taken along line VI-VI in FIG. [Figure 7] FIG. 10 is a schematic plan view showing another example of the arrangement of the cylindrical blades. [Figure 8] 8 is a schematic plan view showing an example of a test substrate and a test piece cut by the blade mechanism of FIG. 7. [Figure 9] 10A and 10B are schematic plan views showing examples of test substrates and test pieces cut by other blade mechanisms. [Figure 10] 10A and 10B are schematic plan views showing examples of test substrates and test pieces cut by other blade mechanisms. [Figure 11] 10A and 10B are schematic plan views showing examples of test substrates and test pieces cut by other blade mechanisms. [Figure 12] FIG. 10 is a schematic diagram of a test piece cutting device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be described in detail below with reference to the drawings. In the following description, terms indicating specific directions or positions (e.g., "upper," "lower," and other terms including these terms) will be used as necessary. However, the use of these terms is intended to facilitate understanding of the invention with reference to the drawings, and the meaning of these terms does not limit the technical scope of the present invention. Furthermore, parts that appear with the same reference numerals in multiple drawings indicate the same or equivalent parts or components. Furthermore, the embodiments described below are illustrative examples of the technical concept of the present invention and are not intended to limit the scope of the present invention. Furthermore, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described below are intended for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, the content described in one embodiment or example may also be applied to other embodiments or examples. Furthermore, the size and positional relationships of components shown in the drawings may be exaggerated for clarity. For example, the cutting edge of a cylindrical blade may be somewhat exaggerated in the drawings to make the structure easier to understand. In this specification, the up and down directions are defined in the drawings.

[0011] The embodiments of the present disclosure may be specified by the following configurations and features. A blade mechanism according to one aspect of the present disclosure is a blade mechanism that cuts a test substrate using a press mechanism, and includes a base plate fixed to the press mechanism, and a punching blade connected to the base plate and having a plurality of cylindrical blades that cut a plurality of test pieces from the test substrate, the punching blade arranging the plurality of cylindrical blades in the width direction of the cylindrical blade, the cylindrical blade having a cutting edge at its lower edge that punches and cuts the test substrate into test pieces, and the shape of the cutting edge is the outer shape of each test piece to be cut, and each cylindrical blade cuts test pieces from the test substrate with a test area having a constant width (W).

[0012] The above configuration has the advantage of being able to cut test pieces with higher precision. This is because the blade mechanism includes a punching blade having multiple cylindrical blades, which are arranged widthwise. The cylindrical blades have the shape of their cutting edges as the outer shape of each test piece to be cut, and each cylindrical blade cuts a test area of ​​a fixed width (W) from the test substrate. A punching blade with multiple cylindrical blades arranged widthwise can arrange the multiple cylindrical blades wider than a blade mechanism with a single cylindrical blade (e.g., Patent Document 1). The cutting edges of each cylindrical blade correspond to the outer shape of each test piece, and the multiple cylindrical blades are arranged close together widthwise. The cutting edges of the multiple cylindrical blades form multiple linear shapes, the outer shape of each test piece, and are pressed against the test substrate simultaneously to cut. This suppresses and prevents slight tilting or wobbling of the cutting edges of the cylindrical blades that may occur when a blade mechanism with a single cylindrical blade punches the test substrate. The blade mechanism having the above-mentioned multiple cylindrical blades can reduce or suppress the difference in height between the longitudinal and / or widthwise (short-side) ends of the blade edge, the inclination of the blade edge, and the deviation in the direction of the blade edge compared to a blade mechanism having a single cylindrical blade, and can prevent or suppress the blade edges from advancing at an angle, improving the straightness of each blade edge and improving the accuracy of the cutting dimensions of each test piece.The above configuration allows the multiple cylindrical blades to prevent the test substrate from shifting in position and suppress swelling and deformation of the test substrate. In a comparative verification test with a blade mechanism having one cylindrical blade, with the same conditions except for the number of cylindrical blades, numerous cuts were made under different conditions or multiple different combinations of the material, thickness, and shape of the test substrate, the shape and quantity of the test piece (test area), and the shape, thickness, material, number, and arrangement of the cylindrical blades.It was found that the cutting dimensional difference due to tilt and wobble of the cutting edge of the cylindrical blade was reduced by approximately 10% to 50%, and it was confirmed that the above configuration can cut test pieces stably with greater precision.

[0013] The above configuration also has the advantage that multiple test pieces can be cut from a test substrate at once under the same cutting conditions, reducing or suppressing errors due to variations in cutting conditions and improving cutting accuracy when comparing multiple cut test pieces. This is because the punching blade has multiple cylindrical blades arranged in the width direction of the cylindrical blades, and multiple test pieces can be cut from the test substrate simultaneously under cutting conditions with the same press pressure with a single up and down movement of the press mechanism that presses each cylindrical blade against the test substrate. Furthermore, each test piece is cut from a region close to each other on the same test substrate, which allows for more uniform cutting conditions than conventional methods that cut test pieces one by one from the test substrate or conventional methods that alternate cutting and rotating each edge of the test piece, thereby reducing or suppressing dimensional errors in each test piece due to variations in cutting conditions. In addition, by cutting multiple test pieces under the same cutting conditions, errors due to variations in cutting conditions can be reduced and suppressed, and by arranging multiple cylindrical blades in the width direction of the cylindrical blade, slight tilt and vibration of the cutting edge of the cylindrical blade can be suppressed and prevented, which both contribute to reducing dimensional errors between multiple test pieces and improving cutting dimensional accuracy.

[0014] Furthermore, the above configuration has the advantage of being able to cut multiple test pieces at once, improving cutting efficiency and reducing costs while reducing wasted space on the test substrate. The blade mechanism allows each cylindrical blade to cut a test piece by simply setting the test substrate in a predetermined cutting position once, allowing multiple test pieces to be cut at once. The blade mechanism determines the position of the test substrate relative to each cylindrical blade by setting and positioning the test substrate in a predetermined cutting position relative to the entire punching blade, eliminating the need to position and align the test substrate relative to each cylindrical blade. This significantly reduces the effort and time required for the cutting process compared to conventional methods that cut test pieces one by one, improving cutting efficiency and reducing costs. Conventional methods that cut test pieces one by one with a single cylindrical blade require setting the test substrate in a predetermined position for each cut, which is time-consuming and labor-intensive, especially when cutting a large number of test pieces, and increases cutting costs. Furthermore, when cutting test pieces one by one, a certain width of margin is required each time to ensure reliable, stable, and safe cutting, which results in a large amount of wasted margin on the test substrate and makes it difficult to cut the test substrate efficiently.However, the above-mentioned configuration for cutting multiple test pieces at once solves these problems.The above-mentioned configuration is because the blade mechanism arranges multiple cylindrical blades in close proximity to each other so that no wasted cutting margin is created in the width direction of the cylindrical blades, allowing the multiple cylindrical blades to efficiently cut the test substrate without creating wasted margin between each cylindrical blade and adjacent cylindrical blades.The above-mentioned configuration can achieve the above effects with a simple configuration and structure.

[0015] In another aspect of the blade mechanism of the present disclosure, in addition to the configuration of the above-described aspect, the cylindrical blade has a test area cutting blade for cutting the test area of ​​the test piece, and the test area cutting blade of one cylindrical blade can be arranged in parallel with the test area cutting blade of another cylindrical blade. This configuration has the advantage of being able to cut the test piece with higher precision. This is because the test area cutting blades of multiple cylindrical blades arranged in parallel can prevent the test substrate from shifting in position and suppress bulging and deformation of the test substrate. Furthermore, the multiple test area cutting blades are arranged in multiple lines, and the cutting edges of each cylindrical blade conform to the outline of each test piece and are simultaneously pressed against the test substrate to cut it. This suppresses and prevents slight tilting and shaking of the cutting edges of the cylindrical blades that may occur when the blade mechanism having one cylindrical blade punches the test substrate. Furthermore, the cutting edges of the test area cutting blades of multiple parallel-arranged cylindrical blades form multiple lines, forming the outer shape of each test piece. The parallel-arranged test area cutting blades can be pressed against the test substrate to cut it. This prevents or inhibits the cutting edges of the multiple cylindrical blades from advancing obliquely, improving the straightness of each cutting edge and improving the cutting accuracy of the test area cutting blades. This configuration also has the advantage of allowing the test areas of multiple test pieces to be cut so that they extend in the same direction of the test substrate, thereby more uniformly aligning the cutting conditions for each test piece and reducing errors due to the cutting conditions. The parallel-arranged test area cutting blades also make it easier to set the test substrate in the desired cutting position, and also allow margins to be formed into a desired shape, such as evenly spaced or with a width within a predetermined range, thereby reducing wasted margins on the test substrate. Note that "parallel" means substantially parallel and includes approximately parallel.

[0016] A blade mechanism according to another aspect of the present disclosure includes the configuration of the first aspect described above, in which the cylindrical blade has a test area cutting blade for cutting the test area of ​​the test piece and chucking area cutting blades at both ends of the test area for cutting the chucking area of ​​the test piece, and the test area cutting blade of one cylindrical blade can be arranged in close proximity to the chucking area cutting blade of another adjacent cylindrical blade. This configuration has the advantage of being able to cut test pieces with higher precision. This is because the test area cutting blade and chucking area cutting blade arranged in close proximity can prevent the test substrate from shifting position and suppress bulging and deformation of the test substrate. Furthermore, multiple test area cutting blades are arranged in close proximity in multiple lines, and the cutting edges of each cylindrical blade conform to the contour of each test piece and are pressed against the test substrate simultaneously to cut it, thereby suppressing and preventing slight tilting and wobbling of the cutting edges of the cylindrical blades that may occur when the blade mechanism having one cylindrical blade punches the test substrate. In addition, the test area cutting blade and the chucking area cutting blade are arranged closely together, and the cutting edges of the multiple test area cutting blades form multiple lines, the outer shape of each test piece, so that the multiple test area cutting blades can be pressed against the test substrate to cut it. The multiple cylindrical blades also prevent and suppress the cutting edges from moving obliquely, improving the straightness of each cutting edge and improving the cutting accuracy of the test area cutting blade. The above configuration also has the advantage that the closely arranged test area cutting blade and the chucking area cutting blade can more uniformly set the cutting conditions for each test piece, thereby reducing errors due to the cutting conditions. The above configuration also has the advantage that the closely arranged test area cutting blade and the chucking area cutting blade make it easier to set the test substrate in the specified cutting position and can form the margin into a specified shape, such as a width within a specified range, thereby reducing wasted margin on the test substrate. For example, by shifting the positions of multiple cylindrical blades used to cut dumbbell-shaped test pieces, arranging them alternately, staggered, horizontally or vertically, or diagonally, etc., so that the test area cutting blade of one cylindrical blade is positioned close to the chucking area cutting blade of another adjacent cylindrical blade, the cutting margin of the test substrate after cutting, particularly the margin between the test areas of adjacent test pieces, can be reduced, the cutting area of ​​the test substrate can be narrowed, and test pieces can be cut efficiently from the narrow width of the cutting range of the test substrate.Furthermore, the above configuration reduces variation in the spacing between adjacent cylindrical blades, allowing multiple test pieces to be cut at once under more uniform cutting conditions, reducing errors due to cutting conditions, and improving the accuracy of the cutting dimensions, particularly the cutting dimensions of the test area cutting blade. The above configuration also has the advantage of being able to cut test pieces with greater accuracy, including the chucking area. While the cutting accuracy that matters for test pieces is usually the cutting dimensions of the test area, for test pieces and test substrates that require strict cutting accuracy and conditions, improving the cutting dimensional accuracy of the entire test piece, including the chucking area, can lead to improved accuracy in the cutting dimensions of the test area. In addition, "arranging the test area cutting blade of a cylindrical blade close to the chucking area cutting blade of another adjacent cylindrical blade" means that the center of both ends of the test area cutting blade (cutting edge) of a cylindrical blade is arranged closer to the center of both ends of the chucking area cutting blade (cutting edge) than the center of both ends of the test area cutting blade (cutting edge) of another adjacent cylindrical blade.

[0017] In addition to the configuration of the first embodiment, a blade mechanism according to another aspect of the present disclosure has the following characteristics: the plurality of cylindrical blades have a smallest distance between the cutting edges of the adjacent cylindrical blades that is 1 mm or more and 1 cm or less. This configuration has the advantage of being able to cut test pieces with higher precision. This is because the smallest distance (narrowest distance) between the cutting edges of adjacent cylindrical blades is 1 mm or more and 1 cm or less, allowing the plurality of cylindrical blades to be arranged closely together. This configuration prevents misalignment of the test substrate and suppresses swelling and deformation of the test substrate. The cutting edges of the plurality of cylindrical blades are arranged closely in multiple lines, and the cutting edges conform to the contours of each test piece and are simultaneously pressed against the test substrate to cut it. This suppresses and prevents slight tilting or wobbling of the cutting edges of the cylindrical blades that may occur when the blade mechanism having one cylindrical blade punches the test substrate. The above configuration has the advantage that by setting the narrowest distance between the cutting edges of adjacent cylindrical blades within a certain range, it is possible to reduce variation in the distance between adjacent cylindrical blades, standardize cutting conditions, and reduce errors due to cutting conditions.Furthermore, the above configuration has the advantage that it is possible to reduce the margin of the test substrate after cutting, and to efficiently cut multiple test pieces from the test substrate.

[0018] In addition to the configuration of the first embodiment, a blade mechanism according to another aspect of the present disclosure can arrange multiple cylindrical blades so that the distance between the cutting edge of one cylindrical blade and the cutting edge of an adjacent cylindrical blade is within five times the narrowest distance between the cutting edges of the adjacent cylindrical blades. This configuration allows multiple cylindrical blades to be arranged closely together, with the distance between the cutting edges of adjacent cylindrical blades being within five times the narrowest distance, allowing test pieces to be cut with greater precision. This configuration also allows the distance between the cutting edges of adjacent cylindrical blades to be within a certain range, allowing cutting conditions to be standardized and reducing errors due to cutting conditions. Furthermore, this configuration reduces the margin of the test substrate after cutting, allowing multiple test pieces to be cut efficiently from the test substrate.

[0019] A blade mechanism according to another aspect of the present disclosure may include, in addition to the configuration of the first aspect, an outer plate disposed outside the cylindrical blade and having a pressing surface that presses against the test substrate. This configuration has the advantage that the pressing surface of the outer plate disposed outside the cylindrical blade presses against the test substrate in a planar manner, thereby enabling the test piece to be cut with greater precision. The multiple cylindrical blades and outer plate prevent the test substrate from shifting position and suppress swelling and deformation of the test substrate. The cutting edges of the multiple cylindrical blades are arranged in multiple lines, forming the contours of each test piece. Furthermore, the pressing surface of the outer plate on the outside of the cylindrical blade presses against the test substrate to cut it, thereby suppressing and preventing slight tilt or wobble of the cutting edges of the cylindrical blades that may occur when the blade mechanism having one cylindrical blade punches the test substrate.

[0020] A blade mechanism according to another aspect of the present disclosure includes, in addition to the configuration of the first aspect described above, a cylindrical blade having a single edge with an outer cutting surface, an outer plate positioned outside the cylindrical blade, and arranged for free reciprocating motion parallel to the surface of the base plate on which the blade is fixed. The outer plate is shaped to accommodate the cylindrical blade inside, and its inner shape conforms to the outer peripheral surface of the cylindrical blade. An outer gap can be provided between the inner peripheral surface of the outer plate and the outer peripheral surface of the cylindrical blade to allow the outer plate to reciprocate relative to the cylindrical blade. This configuration has the advantage of being able to cut test pieces with greater precision. A cylindrical blade with a single edge on the outer cutting surface can cut test pieces to a predetermined outer shape and dimensions. The outer plate, positioned outside the cylindrical blade and arranged for free reciprocating motion parallel to the surface of the base plate on which the blade is fixed, can appropriately determine and adjust the pressing strength and timing of the test substrate. Furthermore, the outer plate is shaped so that the cylindrical blade is placed inside, and its inner shape is shaped to follow the outer surface of the cylindrical blade, and an outer gap is provided so that the outer plate can move back and forth relative to the cylindrical blade.This allows the outer plate to come close to the cylindrical blade and to smoothly and stably press the test substrate in a line or plane along the outer surface of the cylindrical blade.The multiple cylindrical blades and outer plate prevent the test substrate from shifting position and suppress bulging and deformation of the test substrate.The cutting edges of the multiple cylindrical blades are arranged in multiple lines, and the cutting edges form the outer shape of each test piece.Furthermore, the pressing surface of the outer plate on the outside of the cylindrical blade presses against the test substrate to cut it, so that the blade mechanism having one cylindrical blade can suppress and prevent slight tilting and shaking of the cutting edge of the cylindrical blade that may occur when punching out the test substrate. Furthermore, the above configuration has the advantage that the outer plate is positioned outside the outermost (most peripheral) cylindrical blade, making it easier to handle the blade mechanism and improving handling safety during cutting, thereby contributing to more efficient cutting and lower costs.

[0021] In addition to any of the above configurations, a blade mechanism according to another aspect of the present disclosure may have a pressing surface disposed inside the cylindrical blade that presses against the test substrate. This configuration has the advantage that the pressing surface of the outer plate disposed outside the cylindrical blade presses against the test substrate in a planar manner, thereby enabling the test piece to be cut with greater precision. This is because, in addition to the multiple cylindrical blades disposed in close proximity, the inner plate disposed close to the cylindrical blade can prevent the test substrate from shifting position and suppress bulging and deformation of the test substrate. A blade mechanism having a single cylindrical blade can suppress and prevent slight tilt or wobble of the cutting edge of the cylindrical blade that may occur when punching the test substrate. The above blade mechanism has the advantage that the outer shape of the inner plate conforms to the inner surface of the cylindrical blade, making the blade mechanism easier to handle, improving handling safety during cutting, and contributing to cutting efficiency and cost reduction. Furthermore, the above blade mechanism has the advantage that the vertical movement of the inner plate makes it easy to remove the test piece after cutting and take it out of the cylindrical blade, thereby improving cutting efficiency and reducing costs.

[0022] A test piece cutting device according to another aspect of the present disclosure can include the blade mechanism according to the above aspect, a receiving table having a cutting surface on which the test substrate to be cut into test pieces is placed and cut, and a press mechanism that presses the blade mechanism against the test substrate placed on the cutting surface. The above configuration has the advantage of being able to cut test pieces with higher precision. The above configuration has the advantage of being able to cut multiple test pieces simultaneously, improving cutting efficiency and reducing costs while reducing wasted space on the test substrate. (Embodiment 1)

[0023] 1 to 3 show a blade mechanism 100 according to the first embodiment. FIG. 1 is a schematic perspective view of the entire blade mechanism 100 from above, FIG. 2 is an exploded perspective view, FIG. 3 is a schematic perspective view from below, FIG. 4 is a schematic plan view showing another example of the outer plate 2, FIG. 5 is a schematic plan view of the cut test substrate 6 and test piece 6, FIG. 6 is a partial vertical cross-sectional view of the blade mechanism 100, FIGS. 7 and 8 are schematic plan views showing another example of the arrangement of the cylindrical blades 10 and the cut test substrate 6 and test piece 7, and FIGS. 9 to 11 are schematic plan views showing the test substrate 6 and test piece 7 cut by another punching blade 1. The drawings showing the cut test substrate 6 and test piece 7 are intended to illustrate the number, shape, and arrangement of the cylindrical blades 10.

[0024] 1 to 3 includes a base plate 3, a punching blade 1 connected to the base plate 3 and cutting a plurality of test pieces 7 from a test substrate 6, an outer plate 2 located outside the punching blade 1 and arranged to move back and forth in a parallel position to the surface of the base plate 3 on the blade fixing side, and an inner plate 4 located inside the cylindrical blade 10 and arranged to move back and forth in a parallel position to the surface of the base plate 3 on the blade fixing side. In the blade mechanism 100, the punching blade 1 has a plurality of cylindrical blades 10, and each time the punching blade 1 is moved back and forth by the press mechanism 70, a plurality of test pieces 7 are punched out and cut from the test substrate 6. (Test substrate 6)

[0025] The test substrate 6 is used for a variety of purposes. This disclosure does not specify the material, thickness, shape, etc. of the test substrate 6 cut by the blade mechanism 100, but includes all test substrates used for tensile tests and the like. The test substrate 6 is, for example, plastic, rubber, vinyl, paper, metal, or a mixture containing two or more different materials including any one of these, or a laminate in which different layers are stacked. The test substrate 6 may be, for example, polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS), polypropylene (PP), polyvinyl chloride (PVC), acrylic resin (PMMA), AS resin (SAN), ABS resin (ABS), polycarbonate (PC), polyamide (PA), polylactic acid (PLA), fluororesin (FR, PTFE, etc.), polybutylene terephthalate (PBT), polyacetal (POM), polyphenylene ether (m-PPE), polysulfone (PSU), polyether sulfone (PES), polyphenylene sulfide (PPS), polyarylate (PAR), phenolic resin (PF), polyurethane resin (PUR), epoxy resin (EP), melamine resin (ME), unsaturated polyester resin (UP), polyamide imide (PAI), polyethylene terephthalate (PE), polypropylene (PP ... These include polyethylene terephthalate (PEI), liquid crystal polymer (LCP), polyethylene ether ketone (PEEK), polyethylene sulfone (PES), natural rubber (NR), synthetic rubber (IR), butadiene rubber (BR), chloroprene rubber (CR), silicone rubber (SR), acrylic rubber (ACM, ANM), urethane rubber (U), fluororubber (FKM), styrene butadiene rubber (SBR), acrylonitrile rubber (NBR), butyl rubber (IIR), ethylene propylene rubber (EPDM), chlorosulfonated polyethylene rubber (CSM), paper, paperboard, metal foil, copper and aluminum plates, brass, stainless steel, natural fibers, synthetic fibers, 3D structured fabrics, paints, adhesives, electrical wire coatings, belts, food ingredients, wood, bamboo, carbon, aramid, SIC fibers, and other high-performance fibers intertwined with resin or rubber, or plates or prepregs (CFRP, CFRTP). The thickness of the test substrate 6 is, for example, a thin film of 1 mm or less, a sheet of 1 to 3 mm, or a plate of 3 mm to 5 cm.The test substrate 6 is not limited to a flexible material, but may also be made of inorganic materials that are almost inflexible, such as ceramics, and the blade mechanism 100 can punch and cut the test substrate 6 with the punching blade 1 without damaging it. (Test piece 7)

[0026] The test substrate 6 is cut into test specimens 7 of predetermined dimensions and shapes having a test area 7X, and various tests such as tensile tests, impact tests, burst tests, and tear tests are performed based on the standard. Below, a specific example (e.g., FIG. 5) in which the test substrate 6 is cut into a dumbbell-shaped test specimen 7 is illustrated, but the shape and dimensions of the test specimen 7 are not specified in this disclosure. The test specimens 7 can be dumbbell-shaped in various sizes and shapes having a predetermined test area 7X and a chucking area 7Y. The test specimens 7 can also be shaped in shapes other than dumbbells, such as crescent, angle, trouser, Elmendorf tear, rectangle, square, strip, polygon, circle, oval, star, cross, symmetrical or asymmetrical, and irregular shapes. The test specimen 7 can be, for example, a rectangular (rectangle or square) specimen with a test area 7X or a fixed width (W) throughout, with chucking areas 7Y at both ends. The test area 7X can also be between or inside the chucking areas 7Y. 5, the width (W) of the test area 7X is narrower than the chucking area 7Y, and chucking areas 7Y wider than the width (W) of the test area 7X are provided at both ends of the test area 7X, giving the test piece 7 an overall dumbbell shape. A test piece 7 with a wide width (W) of the test area 7X that can be chucked can also have an overall rectangular shape with chucking areas 7Y at both ends having the same width as the test area 7X. (1 punching blade, 10 cylindrical blades)

[0027] The punching blade 1 has multiple cylindrical blades 10 and cuts multiple test pieces 7 from the test substrate 6. For example, the punching blade 1 in Figures 1 to 3 has three cylindrical blades 10, and each cylindrical blade 10 cuts a respective test piece 7 from the test substrate 6. The punching blade 1 in Figure 7 shows another example having three cylindrical blades 10 arranged differently from that in Figure 3. The cylindrical blades 10 punch out and cut multiple test pieces 7 from the test substrate 6 with the cutting edge 10a on their lower edge. The cylindrical blades 10 cut test pieces 7 of various shapes from the test substrate 6, with the shape of the cutting edge 10a being the outer shape of the test pieces 7 to be cut. The punching blade 1 and the cylindrical blades 10 are connected and fixed to the base plate 3 and are moved and pressed in the cutting direction by a press mechanism 70 to cut the test substrate 6. The present disclosure does not specify the shape, thickness, material, number, arrangement, etc. of the punching blade 1 and cylindrical blade 10, but rather these should be appropriately determined depending on the material, thickness, shape, number, etc. of the test substrate 6 to be cut, as well as the service life, mode of use, conditions, frequency, etc. of the punching blade 1 and cylindrical blade 10. For example, the punching blade 1 may have 2, 4 (e.g., the cut test specimen 7 shown in FIG. 10), 5, 6 (e.g., the cut test specimen 7 shown in FIGS. 9 and 11), 7, 8, 9, 10, or 10 or more cylindrical blades 10 depending on the size of the test substrate 6 and the size, shape, number, etc. of the test specimens 7 to be cut. Furthermore, the punching blade 1 may have cylindrical blades 10 of the same or different shapes (e.g., FIG. 11).

[0028] The cylindrical blade 10 in Figures 1 to 3 cuts a dumbbell-shaped test piece 7. This cylindrical blade 10 has a pair of long blades 11 that cut both edges on the long sides of the test piece 7, and a pair of short blades 12 that are connected to both ends of the long blade 11 and cut both edges on the short sides of the test piece 7. The pair of long blades 11 has test area cutting blades 11X that cut both sides of the test area 7X, and chucking area cutting blades 11Y that cut both sides of the chucking area 7Y. The cylindrical blade 10 is hollow and has an inner hollow portion 17.

[0029] The cylindrical blade 10 has a pair of parallel test area cutting blades 11X at the portion where the test area 7X of the test piece 7 is cut. The distance (d) between the parallel test area cutting blades 11X is machined with high dimensional precision to cut the test area 7X of the test piece 7 to an accurate width (W). The cylindrical blade 10 for cutting the dumbbell-shaped test piece 7 has chucking area cutting blades 11Y for cutting the chucking portion 7Y at both ends of the test area cutting blade 11X that cuts the test area 7X. The cut dumbbell-shaped test piece 7 shown in Figure 5 has a gradually increasing width from the test area 7X toward the chucking portion 7Y, so the punching blade 1 in Figures 3 and 4 has a gradually increasing distance (d) from the test area cutting blade 11X toward the chucking area cutting blade 11Y. The cylindrical punching blade 1 can cut and separate the test piece 7 from the test material 6. This punching blade 1 has short blades 12 (cutting edges 10a) connecting the edges of the chucking area cutting blades 11Y on both sides.

[0030] The cylindrical blade 10 is a single-edged blade with an outer cutting surface 15 on its outer peripheral surface 13. The single-edged cylindrical blade 10 with the outer cutting surface 15 can cut a test piece 7 from a test substrate 6, and the cut test piece 7 can be smoothly inserted into the inner hollow portion 17 of the cylindrical blade 10. The cylindrical blade 10 is formed by grinding the tip of the cylindrical metal plate with a whetstone or file to form a single-edged cutting edge 10a. The single-edged cutting edge 10a is formed by grinding the outer peripheral surface of the lower end of the cylindrical metal plate to form an outer cutting surface 15. The inner peripheral surface 14 of the single-edged blade of the cylindrical blade 10 can also be ground and polished along the lower end to form a micro-facet (corrected cutting surface). The cylindrical blade 10 is a single-edged blade with only an outer cutting surface 11, or a single-edged blade with a slight inner cutting surface, and the leading edge is a cutting edge 10a, which cuts the test material 6 into test pieces 7. In a single-edged cylindrical blade 10 with an inner cutting surface, the leading edge of the outer cutting surface 15 and the cutting edge 10a is offset toward the outside of the outer surface 13 from the inner surface 14. This offset is, for example, 1 / 10 or less of the thickness. The cutting edge 10a adjusts the offset distance, which is the distance between the cylindrical inner surface 14 and the cutting edge 10a, and the single-edged distance, which is the distance between the cylindrical outer surface 13 and the cutting edge 10a. The cylindrical blade 10 used to cut the dumbbell-shaped test piece 7 has a correcting blade surface on the test area cutting blade 11X to set the offset distance of the cutting edge 10a of the test area cutting blade 11X so that the width (W) of the cut test area can be accurately measured without deviation in the thickness direction. The cylindrical blade 10 can have the inner peripheral surface 14 of one blade be vertical (including nearly vertical) or tapered. By tapering the inner peripheral surface 14 of one blade and / or providing a slight correcting blade surface, the error between the width of the upper surface (cutting start surface) and the width of the lower surface (cutting end surface) of the test area 7X can be reduced, thereby increasing the dimensional accuracy of the width (W). The correcting blade surface can also reduce the inclination angle of the tapered upper surface.

[0031] The cylindrical blade 10 has a cylindrical shape and is used to cut the test material 6 into test pieces 7 with the cutting edge 10a at its lower edge. It can be made, for example, by bending and welding a metal plate 1 to 10 mm thick into a cylindrical shape, or by cutting a metal block into a cylindrical shape using a method such as electrical discharge machining. The cylindrical blade 10 is made of a hardenable steel material, preferably carbon steel, which has excellent workability. The carbon content of carbon steel is adjusted to an optimal value taking into account the required hardness and brittleness. Carbon steel can be made hard by increasing the carbon content. However, since a high carbon content increases brittleness, the carbon content of the steel material to be processed into the blade is, for example, 0.4% to 1.4%, preferably 0.45% to 0.7%.

[0032] The punching blade 1 has multiple cylindrical blades 10 arranged in close proximity. Arranging multiple cylindrical blades 10 in close proximity improves cutting accuracy while preventing unnecessary cutting margins from being generated between test pieces. The proximity position is appropriately determined depending on the material, thickness, shape, etc. of the test substrate 6, the shape, etc. of the test piece 7, and the thickness, outer blade surface 15, and the inclination and shape of the cutting edge 10a of the cylindrical blade 10. The spacing between the cutting edges 10a of the multiple cylindrical blades 10 arranged in close proximity (the minimum spacing between adjacent test pieces 7) is set to, for example, 1 mm or more. This configuration narrows the spacing between the cutting edges 10a, improving the accuracy of the cutting dimensions. For example, when the test substrate 6 is a high-performance fiber, a super engineering plastic such as polyether ether ketone (PEEK), a hard material, a soft material, or a hard material, has a certain thickness or more, has an R, is curved, has an uneven surface, or a combination of these, the difficulty of punching and cutting increases depending on the material, thickness, shape, and size of the test substrate 6. The width (W) of the test area 7X is likely to shift in the thickness direction, resulting in a large difference in width (W), which can lead to problems such as deterioration in the quality of the cut surface, damage to the test substrate 6, whitening, and reduced blade durability, making it difficult to cut to accurate dimensions. The cylindrical blade 10 of the blade mechanism 100 of the present disclosure can cut the exemplary test substrate 6 without problems such as deterioration in the quality of the cut surface, damage to the test substrate 6, whitening, and reduced blade durability. Furthermore, the blade mechanism 100 has the advantage that by punching and cutting multiple test pieces 7 from the test substrate 6 at once using a punching blade 1 in which multiple cylindrical blades 10 are arranged close to each other in the width direction (X direction), the precision of the cut dimensions of the test pieces 7 can be improved compared to cutting the test pieces 7 one by one with a single cylindrical blade. This is because the blade mechanism 100 can suppress and prevent slight tilt and wobble of the cutting edge of the cylindrical blade that may occur when the blade mechanism having one cylindrical blade punches the test substrate 6.

[0033] The narrowest distance between the cutting edge 10a of one cylindrical blade 10 and the cutting edge 10a of another adjacent cylindrical blade 10 is preferably, for example, 1 mm or more and 1 cm or less. By arranging multiple cylindrical blades 10 in close proximity within this range, slight tilt or wobble of the cutting edge of the cylindrical blade that may occur when the blade mechanism having one cylindrical blade punches the test substrate 6 can be more effectively suppressed and prevented. Furthermore, a punching blade 1 having multiple cylindrical blades 10 arranged in close proximity makes it easier to standardize cutting conditions and further reduces wasted space. Furthermore, the distance between the cutting edge 10a of one cylindrical blade 10 and the cutting edge 10a of another adjacent cylindrical blade 10 is preferably within 5 times the narrowest distance. By arranging multiple cylindrical blades 10 in close proximity within this range, slight tilt or wobble of the cutting edge of the cylindrical blade that may occur when the blade mechanism having one cylindrical blade punches the test substrate 6 can be more effectively suppressed and prevented. Furthermore, the variation in the spacing between adjacent cylindrical blades 10 can be reduced, the cutting conditions can be unified, and wasteful margins can be reduced.

[0034] The punching blade 1 has multiple cylindrical blades 10 arranged in the width direction (X direction) of the cylindrical blade 10. The width direction of the cylindrical blade 10 is a direction perpendicular to the test area cutting blade 11X, and is shown as the X direction in Figures 3, 4, 7, 9, etc. Arranging multiple cylindrical blades 10 in the width direction of the cylindrical blade 10 not only includes cases where one or more cylindrical blades 10 are arranged in a position and orientation parallel to the width direction of a certain cylindrical blade 10, but also includes cases where one or more cylindrical blades 10 are arranged in a position and orientation that is less than ±90 degrees with respect to the width direction (X direction) of a certain cylindrical blade 10, and includes one or more cylindrical blades 10 that at least partially overlap when moved parallel to the width direction (X direction) of a certain cylindrical blade 10. In Figures 3 and 4, three cylindrical blades 10 are arranged side by side in a parallel position and orientation in the width direction (X direction). In Figure 7, three cylindrical blades 10 are arranged with the middle cylindrical blade 10 shifted above the cylindrical blades 10 on either side (Y direction). In Figure 9, the cylindrical blades 10 used to cut the test piece 7 are arranged in two rows of three in the width direction (X direction), with each cylindrical blade 10 shifted in a parallel orientation. Multiple cylindrical blades 10 can be arranged side by side and / or vertically, in the same orientation and / or different orientations, and in one or more rows and / or rows. Multiple cylindrical blades 10 can be arranged with the same and / or different shapes.

[0035] The punching knife 1 in Figures 3 and 4 has three adjacent cylindrical blades 10 (10A, 10B, 10C) arranged side by side in the X direction. In the punching knife 1 in the figures, the cutting edges 10a of a pair of short blades 12 connected to both ends of the long blade 11 are arranged parallel to each other, the cutting edges 10a of the short blades 12 of adjacent cylindrical blades 10 (10A, 10B, 10C) are arranged in a straight line, and the cutting edges 10a of the test area cutting blades 11X of adjacent cylindrical blades 10 (10A, 10B, 10C) are arranged parallel to each other. By arranging the cutting edges 10a of multiple test area cutting blades 11X in parallel, the accuracy of the cutting dimensions of the test piece 7 can be improved. Furthermore, by having an inner plate 4 on the inside of the cylindrical blade 10 described later and / or an outer plate 2 on the outside of the cylindrical blade 10 press the test substrate 6 close to the test area cutting blade 11X, misalignment of the test substrate 6 can be prevented, and the test substrate 6 can be maintained in a substantially flat state, improving cutting accuracy.

[0036] The punching blade 1 may have a different number of cylindrical blades 10 than that shown in Figure 3, and the cylindrical blades 10 may be arranged in a different manner. For example, the punching blade 1 may have the test area cutting blades 11X and the chucking area cutting blades 11Y arranged alternately, staggered, side by side, vertically, or in close proximity. For example, the cylindrical blade 10 shown in Figure 7 has the chucking area cutting blade 11Y of the adjacent (middle) cylindrical blade 10B arranged side by side in the X direction between the test area cutting blades 11X of the cylindrical blades 10A and 10C on both sides of the dumbbell-shaped test piece 7 to be cut. By shifting the middle cylindrical blade 10B in the Y direction (upward), the chucking region cutting blade 11Y of the middle cylindrical blade 10B is disposed between the upper and lower chucking region cutting blades 11Y of the cylindrical blades 10A and 10C on both sides, and the chucking region cutting blade 11Y of the middle cylindrical blade 10B can be disposed close to the test region cutting blades 11 of the cylindrical blades 10A and 10C on both sides. Also, the chucking region cutting blades 11Y of the cylindrical blades 10A and 10C on both sides can be disposed close to the test region cutting blade 11 of the middle cylindrical blade 10B. The test area cutting blades 11 of multiple cylindrical blades 10A, 10B, and 10C and the chucking area cutting blades 11Y of other cylindrical blades 10A, 10B, and 10C can be arranged close to each other, preventing the test substrate 6 from shifting position relative to the multiple cylindrical blades 10A, 10B, and 10C, improving cutting accuracy. Figure 8 shows the test substrate 6 and test piece 7 cut by the cylindrical blades 10A, 10B, and 10C of Figure 7. Multiple cylindrical blades 10 arranged close to each other reduce the margins between each cut test piece 7 and narrow the cutting area and width of the test substrate 6. Furthermore, the variation in the spacing between test pieces 7 (the spacing between the test area 7X and the adjacent test piece 7) can be reduced, allowing for standardized cutting conditions, reduced error, and improved cutting dimensional accuracy.

[0037] Furthermore, Figures 9 to 11 show other examples of test substrates 6 and test pieces 7 cut with different numbers and arrangements of cylindrical blades 10. The number, arrangement, and orientation of the cylindrical blades 10 can be determined from the cut test substrates 6 and test pieces 7. In Figure 9, test areas 7X and chucking areas 7Y, in which dumbbell-shaped test pieces 7 are placed at an angle, can be alternately arranged close to each other. In Figure 9, each test piece 7 is placed at an angle relative to the test substrate 6, reducing the margin, but this does not specify the direction or cutting position of the test substrate 6. For example, the test piece 7 can be cut so that it is positioned parallel to one of the outer edges of the test substrate 6. In Figure 10, two chucking areas 7Y are arranged between the test areas 7X on both sides. In Figure 11, test pieces 7B of different shapes (rectangular, oblong, strip-shaped) are arranged in two rows, upper and lower, between dumbbell-shaped test pieces 7A on both sides, and six test pieces 7 are cut. 9 to 11, similar to FIG. 8, multiple closely spaced cylindrical blades 10 enable cutting with high cutting accuracy, while also narrowing the cutting width and cutting area, thereby reducing wasted space between each cut test piece 7. Furthermore, the variation in the spacing between test pieces 7 (the spacing between the test area 7X and the adjacent test piece 7) can be reduced, allowing for standardized cutting conditions, reducing errors, and improving the accuracy of the cut dimensions. Furthermore, the inner plate 4 disposed inside the cylindrical blade 10 and / or the outer plate 2 disposed outside the cylindrical blade 10 press the test substrate 6 in close proximity to the test area cutting blade 11X, preventing the test substrate 6 from shifting position and maintaining the test substrate 6 substantially flat, further improving cutting accuracy. For example, an outer plate 2 (frame portion 20A) shown by the dashed lines in FIGS. 7 to 9 can be provided to press the test substrate 6 along the outer peripheral surface 13 of the cylindrical blade 10.

[0038] The number and arrangement of the cylindrical blades 10 can be changed or adjusted. For example, in a configuration in which the punching blades 1 are detachably connected and fixed to the base plate 3, the number, shape, and arrangement of the cylindrical blades 10 can be changed by replacing the detachable punching blades 1. Furthermore, one or more cylindrical blades 10 can be connected to the base plate 3 via a connecting portion, and the number, shape, and arrangement of the cylindrical blades 10 can be changed by replacing one or more cylindrical blades 10. The blade mechanism 100 can be configured to a detachable or replaceable range. (Outer plate 2)

[0039] The outer plate 2 is an outer pusher disposed outside the punching blade 1 (cylindrical blade 10) and has a pressing surface 21 that presses against the test substrate 6. However, the present disclosure does not specify the shape, thickness, material, or configuration of the outer plate 2. As shown in FIGS. 1 to 3 , the outer plate 2 has a pressing surface 21 on its lower surface. It is located outside the cylindrical blade 10 and can be reciprocated in a parallel orientation to the blade-fixed surface of the base plate 3. The outer plate 2 reciprocates vertically relative to the cylindrical blade 10. The outer plate 2 can appropriately determine and adjust the pressing position and area of ​​the test substrate 6, as well as the pressing strength and timing. The outer plate 2 presses against the surface of the test substrate 6 to be cut with the flat pressing surface 21, forming a shape that conforms to the outer peripheral surface 13 of the cylindrical blade 10 and pressing the test substrate 6 linearly along the outer peripheral surface 13. The outer plate 2 is pushed out by the elastic body 51 at a position where the cutting edge 10a of the cylindrical blade 10 does not contact the surface of the test substrate 6, and the pressing surface 21 presses against the surface of the test substrate 6 ahead of the cutting edge 10a, pressing and holding the test substrate 6 to prevent it from shifting position. Furthermore, the pressing surface 21 holds the test substrate 6 in a substantially flat state, and cutting is possible in a state where bulging, bending, and outward deformation of the test substrate 6 due to the cutting edge 10a are suppressed, improving cutting dimensional accuracy.

[0040] The pressing surface 21, which is shaped to conform to the outer peripheral surface 13 of the cylindrical blade 10, can prevent the test substrate 6 from shifting position and improve the cutting dimensional accuracy, and by arranging the pressing surface 21 close to the outer blade surface 15 of the cylindrical blade 10, the effects of preventing the test substrate 6 from shifting position and improving the cutting dimensional accuracy can be further improved. The pressing surface 21 can be arranged close to the outer blade surface 15 between the inner peripheral surface 23 of the outer plate 2 and the outer peripheral surface 13 of the cylindrical blade 10, as long as it does not interfere with the reciprocating motion of the outer plate 2 relative to the cylindrical blade 10. For example, in a plan view from below, the pressing surface 21 can be arranged so as not to overlap the outer blade surface 15, or can be arranged close enough so that a portion of the pressing surface 21 overlaps the outer blade surface 15.

[0041] The outer plate 2 in Figures 3 and 4 has a frame portion 20A arranged on the outer periphery of the punching blade 1, i.e., on the outside of the outermost cylindrical blade 10. With this configuration, the pressing surface 21 arranged on the outside of the outermost cylindrical blade 10 presses against the surface of the test substrate 6 ahead of the cutting edge 10a, thereby pressing and holding the test substrate 6 so that the cutting area of ​​the test substrate 6 does not shift position. The outer plate 2 in Figures 2 to 4 has a frame-shaped frame portion 20A that surrounds the outer periphery of the punching blade 1. The frame portion 20A in the figures is frame-shaped so that the cylindrical blade 10 is arranged inside, and its inner shape is shaped to fit the outer surface 13 of the cylindrical blade 10, specifically, it is larger than the outer shape of the cylindrical blade 10 that cuts the test piece 7. The frame-shaped frame portion 20A can be formed by processing, for example, a flat plate to provide an opening through which the cylindrical blade 10 can pass, and the pressing surface 21 can be easily made flush without adjusting the horizontal position or posture, allowing the test substrate 6 to be stably pressed over a wide pressing area along the outer peripheral surface 13 of the cylindrical blade 10. The outer plate 2 in FIG. 4 has a rectangular (oblong) outer shape and is provided with curved portions 28 that are chamfered at the four corners, improving the ease of handling and safety of the blade mechanism 100. However, the outer shape of the outer plate 2 can be other than rectangular, such as circular, elliptical, or other irregular shapes.

[0042] The frame-shaped outer plate 2 in FIGS. 3 and 4 connects a pair of vertical frames 20m extending in the vertical direction (Y direction) and a pair of horizontal frames 20n extending in the horizontal direction (X direction). The pair of vertical frames 20m and / or the pair of horizontal frames 20n of the outer plate 2 can have the same width L (length in the width direction), different widths L, or partially different widths L. For example, the vertical frames 20m on both sides of FIG. 3 have protrusions 20X protruding inward (toward the test area cutting blade 11X), making the width (L2) of the region of the cylindrical blade 10 facing the test area cutting blade 11X wider than the width (L1) of the region facing the chucking area cutting blade 11Y. The protrusions 20X in the figures protrude inward from the frame portion 20A (vertical frames 20m) and protrude toward the test area cutting blade 11X from both of the pair of vertical frames 20m. The outer plate 2 having the protrusion 20X can have its inner shape conforming to the outer peripheral surface 13 of the cylindrical blade 10 (test area cutting blade 11X). By bringing the inner peripheral surface 23 of the protrusion 20X close to the outer peripheral surface 13 of the test area cutting blade 11X and pressing the test substrate 6 with the pressing surface 21 of the protrusion 20X close to the cutting line cut by the test area cutting blade 11X, misalignment of the test substrate 6 can be effectively prevented, further improving cutting dimensional accuracy. The horizontal frames 20n on both sides of Figure 3 have the same width (L3). As shown in Figure 4, a pair of vertical frames 20m and a pair of horizontal frames 20n can each have the same width (L1, L3), and the vertical frames 20m and horizontal frames 20n can also have the same width. The pair of vertical frames 20m and / or the pair of horizontal frames 20n can be arranged parallel to each other, and the vertical frames 20m and horizontal frames 20n can be connected at right angles. With this configuration, the cutting position and cutting line can be grasped using either a pair of vertical frames 20m arranged parallel to the outer shape of the test piece 7 or a pair of horizontal frames 20n, and the test piece 7 can be cut at a predetermined position on the test substrate 6. With this configuration, the cutting position, cutting line, and test area 7X can be grasped using either a pair of vertical frames 20m arranged parallel to the test area cutting blade 11X or a pair of horizontal frames 20n arranged perpendicular to the test area cutting blade 11X, and the test piece 7 can be cut at a predetermined position on the test substrate 6.

[0043] The outer plate 2 shown in FIG. 3 has a dumbbell-shaped inner shape that conforms to the cylindrical outer surface 13 of the punching blade 1 and the cylindrical blade 10, providing an outer gap 25 between the outer plate 2 and the outer surface 13 of the punching blade 1. By narrowing the outer gap 25 between the outer plate 2 and the parallel test area cutting blade 11X of the punching blade 1, the outer plate 2 can effectively prevent the test material 6 from shifting position in the area where the test area 7X is cut. Therefore, the outer gap 25 between the test area cutting blade 11X and the outer plate 2 is set to, for example, 5 mm or less, preferably 3 mm or less, and more preferably 2 mm or less. If the outer gap 25 is too narrow, the punching blade 1 and the outer plate 2 will come into contact, hindering smooth relative vertical movement between them. Therefore, the outer gap 25 between the test area cutting blade 11X and the outer plate 2 is set to, for example, 0.1 mm or more, preferably 0.2 mm or more, and more preferably 0.5 mm or more. The inner surface of the outer plate 2 is close to the outside of the test area cutting blade 11X of the punching blade 1, and the outer plate 2 presses against the surface of the test material 6 in the area close to the outside of the test area cutting blade 11X, and can cut the width of the test area 7X with high dimensional accuracy.

[0044] As shown in FIGS. 1 and 6 , an outer gap 25 is provided between the inner peripheral surface 23 of the frame 20A of the outer plate 2 and the outer peripheral surface 13 of the cylindrical blade 10 to allow the outer plate 2 to reciprocate relative to the cylindrical blade 10. The inner peripheral surface 23 of the outer plate 2 in the figures has an opposing surface 23a that faces the outer peripheral surface 13 of the cylindrical blade 10. The opposing surface 23a has an inclined surface 24 that widens upward, allowing the outer gap 25 to visually identify the cutting edge 10a and cutting position. This configuration improves cutting dimensional accuracy and allows the position where the cutting edge 10a of the cylindrical blade 10 contacts the test substrate 6 and the position of the cutting edge 10a during cutting to be confirmed through the outer gap 25 of the frame 20A on any side and / or any of the four corners of the outer plate 2. This simplifies positioning and installation of the test substrate 6, improves cutting efficiency, and reduces costs. It also improves safety during cutting and handling of the blade mechanism 100. The inclined surface 24 relatively widens the outer gap 25 (S2) on the upper surface side of the outer plate 2 compared to the outer gap 25 (S1) on the lower surface side (the pressing surface 21 side) of the outer plate 2. This widens the area in which the cutting edge 10a of the cylindrical blade 10 can be seen from above or diagonally above during cutting. This makes it possible to see a portion of the cutting edge 10a, both ends of the cutting edge 10a, and the cutting edge line, making it easier to confirm the cutting position (FIGS. 1 and 6). The inclined surface 24 also narrows the outer gap 25 (S1) on the lower surface side of the outer plate 2, preventing the operator's fingertips from getting caught and accidentally touching the cutting edge 10a, thereby improving safety during use and handling. The inclined surface 24 also narrows the outer gap 25 (S1) on the lower surface side of the outer plate 2 compared to when no inclined surface is present. This allows the pressing surface 21 to come close to the cylindrical blade 10 and press the test substrate 6, preventing misalignment of the test substrate 6 and improving cutting dimensional accuracy. Furthermore, the inclined surface 24 can also be used as a guide for guiding the position and posture of the cutting edge 10a, or as a stopper for determining the degree of protrusion of the cutting edge 10a.

[0045] If the opposing surface 23a does not have an inclined surface 24, or if there is an inclined surface 24 between the opposing surface 23a and the outer peripheral surface 13 of the cylindrical blade 10, but the inclined surface 24 is approximately parallel to the outer peripheral surface 13, or if there is not enough clearance, the outer gap 25 does not have an inclined surface 24 that widens upward to make the cutting edge 10a visible during cutting. This makes it impossible to confirm the position where the cutting edge 10a contacts the test substrate 6 or the position of the cutting edge 10a during cutting from the outer gap 25, and requires time and effort to set the position of the test substrate 6. In contrast, as shown in Figures 1 and 6, if the outer gap 25 has an inclined surface 24 that widens upward to make the cutting edge 10a visible during cutting, this problem is solved, and the position where the cutting edge 10a of the cylindrical blade 10 contacts the test substrate 6 and the position of the cutting edge 10a during cutting can be confirmed from the outer gap 25. This makes it easy to position the test substrate 6, resulting in more efficient cutting and lower costs. Furthermore, this configuration allows the outer plate 2 to come close to the cylindrical blade 10 and press the test substrate 6, improving the dimensional accuracy of cutting. Also, the outer gap 25 on the underside of the outer plate 2 is wide enough to prevent fingertips from entering the outer gap 25, preventing unintentional contact with the cutting edge and improving safety.

[0046] The inclination angle (θ) of the inclined surface 24 is preferably 20 to 80 degrees, more preferably 30 to 70 degrees, relative to the lower surface (pressing surface 21) of the outer plate 2, so that the outer plate 2 can smoothly reciprocate relative to the cylindrical blade 10 and the cutting position can be confirmed during cutting. If the inclination angle (θ) of the inclined surface 24 is too large, the area in which the position of the cutting edge 10a can be confirmed becomes narrow, or it becomes difficult to confirm the position of the cutting edge 10a, or the outer plate 2 comes into contact with the cylindrical blade 10, making smooth reciprocation difficult. If the inclination angle (θ) of the inclined surface 24 is too small, the strength of the lower tip of the inclined surface 24 or the pressing force may become insufficient in some cases.

[0047] 2 and 3 has a pair of short-blade-opposing surfaces 23B that face the outer peripheral surface 13 of the short blade 12, and a pair of long-blade-opposing surfaces 23A that are connected to the short-blade-opposing surfaces 23B and face the outer peripheral surface 13 of the long blade 11. The outer plate 2 in FIGS. 2 and 3 has inclined surfaces 24 on the pair of short-blade-opposing surfaces 23B, with outer gaps 25 that widen upward. This configuration allows the cutting edge 10a of the cylindrical blade 10 to be recognized by looking through the outer gaps 25 of the blade-opposing surfaces 23B, and also makes the outer gaps 25 of the long-blade-opposing surfaces 23A, particularly the outer gap 25 of the long-blade-opposing surface 23A that faces the outer peripheral surface 13 of the test area cutting blade 11X, narrower than the short-blade-opposing surface 23B side, thereby preventing misalignment of the test substrate 6 and improving cutting dimensional accuracy. However, both the pair of opposing short blade surfaces 23B and the pair of opposing long blade surfaces 23A may have inclined surfaces 24 that widen the outer gap 25 upward. This configuration makes it possible to view the cutting edge 10a of the cylindrical blade 10 by looking into the outer gap 25 from either the opposing short blade surfaces 23B or the opposing long blade surfaces 23A, and makes it easy to view both ends (corners) of the cutting edge 10a of the short blade 12 from the outer gap 25 of the opposing short blade surfaces 23B.

[0048] The outer plate 2's frame 20A may have an inclined surface 24 with an upwardly expanding outer gap 25 on all or part of the opposing surface 23a. This configuration allows the user to check the position where the cutting edge 10a of the cylindrical blade 10 contacts the test substrate 6 and the position of the cutting edge 10a during cutting. This facilitates positioning of the test substrate 6, improves cutting efficiency, and reduces costs. It also improves safety during cutting and handling of the blade mechanism 100. The inclined surface 24 with an upwardly expanding outer gap 25 can be provided on the frame 20A of the outer plate's vertical frame 20m and / or horizontal frame 20n, short and / or long sides, or any of the four corners. The frame 20A of the outer plate 2 shown in Figures 1 and 6 has an inclined surface 24 with an upwardly expanding outer gap 25 on both of the opposing short blade opposing surfaces 23B. In addition, the frame 20A of the outer plate 2 can be provided with an inclined surface 24 with the outer gap 25 widening upward on one of the pair of opposing short blade opposing surfaces 23B or on one or both of the pair of opposing long blade opposing surfaces 23A. Furthermore, the frame 20A of the outer plate 2 can be provided with an inclined surface 24 on the opening window so that the position of the cutting edge 10a can be confirmed during cutting. For example, the opening window in Figure 7 has a corner 23b on one side (upper side of Figure 7) that indicates the position of the corner 10b of the cutting edge 10a on the other side (lower side of Figure 7), making it easy to recognize and confirm the corner 10b of the cutting edge 10a on the other side (lower side of Figure 7).

[0049] This disclosure does not specify the inclined surface 24. The inclined surface 24 can have the same or different inclination angles (θ). For example, the inclination angle (θ1) of the inclined surface 23a of the short blade-facing surface 23B of the outer plate 2 can be smaller than the inclination angle (θ) of the inclined surface 23a of the long blade-facing surface 23A. This configuration makes it easier to check the cutting edge 10a and cutting position from an upward oblique direction on the short blade-facing surface 23B. The inclined surface 24 can be a textured surface or a non-mirror finish, such as a matte cut surface. A non-mirror finish reduces manufacturing costs by eliminating the need for finishing such as mirror polishing or machining. While Figures 1 and 6 show the inclined surface 24 as a flat surface, the inclined surface 24 can also be a curved surface, or a combination of flat and curved surfaces. The inclined surface 24 can also have protrusions, steps, uneven shapes, roundness, etc. For example, the outer plate 2 may be provided with marks such as lines, colors, uneven shapes, or steps that make it easier to recognize and check the cutting edge 10a, cutting position, and cutting line on the opposing surface 23a, inclined surface 24, etc. Also, the lower tip of the opposing surface 23a may be rounded to improve strength.

[0050] An outer gap 25 is provided between the inner peripheral surface 23 of the outer plate 2 and the outer peripheral surface 13 of the cylindrical blade 10. The outer gap 25 is an appropriate distance that allows the outer plate 2 to reciprocate relative to the cylindrical blade 10, allows the cutting edge 10a and cutting position to be confirmed through the outer gap 25, and prevents the cutting edge 10a from being touched by fingertips or the like. For example, the outer gap (S1) on the underside of the outer plate 2 is preferably 0.1 mm or more and 2 cm or less, and more preferably 0.5 mm or more and 1.5 cm or less.

[0051] The outer gap 25 can be the same or different depending on the shape, structure, and configuration of the test piece 7, the blade mechanism 100, and the cylindrical blade 10. For example, in FIG. 6, the outer gap (S1) on the underside of the outer plate 2 is narrower than the outer gap (S2) on the upper side of the outer plate 2. By narrowing the outer gap (S1) on the lower side of the outer plate 2, the cutting edge 10a is prevented from coming into contact with fingertips and other objects, allowing for safe use and handling. Furthermore, the pressing surface 21 of the outer plate 2 is positioned close to the cutting edge 10a, pressing and compressing the test substrate 6 to prevent displacement of the test substrate 6 and suppress deformation, improving cutting accuracy. Furthermore, by widening the outer gap (S2) on the upper side of the outer plate 2, the recognizable area of ​​the cutting edge 10a from an oblique upward direction on the base plate 3 is widened, making it easier to recognize the cutting edge 10a and confirm the cutting position. Furthermore, the outer gap 25 (S1) between the outer plate 2 and the test area cutting blade 11X can be narrower than the outer gaps 25 at other locations. By narrowing the outer gap 25 between the outer plate 2 and the test area cutting blade 11X, safety is improved, positional deviation of the test substrate 6 is effectively prevented, deformation is suppressed, and the width of the test area 7X can be cut with high dimensional accuracy. Therefore, the outer gap 25 between the outer plate 2 and the test area cutting blade 11X is, for example, 1 cm or less, and preferably 5 mm or less. The outer plate 2 may have an inclined surface 24 on a surface other than the test area cutting blade 11X, for example, on the short blade opposing surface 23B, thereby achieving both ease of checking the cutting position and high dimensional accuracy in cutting the test area 7X. The opposing surface 23a of the outer plate 2 is angled and shaped to conform to the outer peripheral surface 13 and cutting edge 10a of the cylindrical blade 10, and by arranging the opposing surface 23a closer to the outer plate 2, the cutting accuracy of the test area 7X can be further improved.

[0052] The outer plate 2 can have a spacing portion 20B located outside the cylindrical blade 10 and positioned between adjacent cylindrical blades 10 (spaces) to press the test substrate 6. The spacing portion 20B can have a pressing surface 21 that presses the test substrate 6, similar to the frame portion 20A, and can press the test substrate 6 all over or partially, effectively preventing misalignment and allowing the test substrate 6 to be cut with reduced or no swelling, bending, or deformation caused by the cutting edge 10a, thereby improving cutting dimensional accuracy. The spacing portion 20B can be shaped to fit the outer peripheral surface 13 of the cylindrical blade 10 and can be positioned close to the cylindrical blade 10, and can particularly be provided outside the test area cutting blade 11X and between adjacent cylindrical blades 10. The spacing section 20B is shaped to fit the test area cutting blade 11X and can be positioned close to the test area cutting blade 11X, or can be positioned on either side of the test area cutting blade 11X, effectively preventing misalignment of the test substrate 6 and improving cutting dimensional accuracy. The spacing section 20B can press the test substrate 6 with the pressing surface 21 without providing a frame section 20A or by narrowing the width of the frame section 20A. The spacing section 20B can also be positioned, connected, and fixed to the surface of the blade fixing side of the base plate 3 in a parallel position so that it can move back and forth freely. The spacing section 20B can have one or more elastic sections 20C that press the test substrate 6 with the elastic force of a cylindrical or columnar elastic body such as rubber or plastic (Figure 4). The spacing portion 20B can have a narrower outer gap 25 than the frame portion 20A, and the opposing surface 23a facing the outer peripheral surface 13 of the cylindrical blade 10 can be parallel (including approximately parallel) to the outer peripheral surface 13. Furthermore, the spacing portion 20B does not have an inclined surface 24 that widens upward to allow the cutting edge 10a to be recognized during cutting. Instead, the outer gap 25 can be perpendicular (including approximately perpendicular) to the pressing surface 21 or parallel to the outer blade surface 15. The opposing surface 23a can be positioned closer to the outer peripheral surface 13 of the cylindrical blade 10 than the frame portion 20A. This proximity of the spacing portion 20B prevents misalignment of the test substrate 6, suppressing swelling, deflection, and deformation of the test substrate 6 due to the cutting edge 10a during cutting, thereby improving cutting dimensional accuracy. The spacing portion 20B can also extend to the outer peripheral surface 13 of the chucking region cutting blade 11Y and be connected to the frame portion 20A.The vertical stroke and pressure of the outer plate 2 are determined appropriately according to the material, thickness, etc. of the test substrate 6, and can be adjusted as necessary.

[0053] As shown in FIG. 6 , when the blade mechanism 100 is in a non-cutting state, the outer plate 2 is pushed out by the elastic body 51 and positioned so that the pressing surface 21 protrudes beyond the cutting edge 10a of the cylindrical blade 10. This configuration protects the cutting edge 10a of the cylindrical blade 10 by covering it with the outer plate 2, while also preventing contact with the cutting edge 10a by fingertips and other objects, ensuring safe use and handling. In addition to the cutting edge 10a not protruding from the underside of the outer plate 2, the narrow outer gap 25 further improves the safety of the blade mechanism 100. The protruding length (H) of the protruding portion 26 of the outer plate 2 protruding from the cutting edge 10a is preferably 1 mm or more, and more preferably 2 mm or more. Even when a fingertip is pressed hard against the pressing surface 21, contact with the cutting edge 10a can be prevented, further ensuring the safety of the blade mechanism 100.

[0054] The outer plate 2 can be made of, for example, a plastic plate or a metal plate. The plastic outer plate 2 can be made of, for example, a plate material made of engineering plastic molded to a predetermined thickness. Such a plastic plate can be made of high-strength, versatile nylon, such as MC nylon. However, plastics other than nylon can also be used. The plastic outer plate 2 can be made thick yet lightweight, and by being positioned protruding from the cutting edge 10a of the cylindrical blade 10, it protects the cutting edge 10a and fingertips, allowing for safe use. The plastic outer plate 2 can be made to have an appropriate thickness and strength to improve safety, and its thickness can be, for example, 5 mm to 3 cm, preferably 6 mm to 2 cm. The plastic outer plate can also be made transparent. A transparent outer plate allows light to pass through, making it easy to check the cutting position and the surface condition of the test substrate 6. (Base Plate 3)

[0055] The base plate 3 is connected to the punching blade 1 and the cylindrical blade 10. The base plate 3 can connect to the outer plate 2 and / or inner plate 4, which are arranged to reciprocate freely in a parallel position on the surface of the blade-fixed side of the punching blade 1. This disclosure does not specify the shape, thickness, material, configuration, structure, or connection manner of the base plate 3. For example, the base plate 3 shown in Figures 1 and 2 is a flat metal plate, and has a connecting portion 32 fixed to its upper surface that is detachably connected to the press mechanism 70, and connects the cylindrical blade 10 and the outer plate 2 to its lower surface. The base plate 3 in Figure 1 has a rectangular outer shape like the outer plate 2 (frame portion 20A), and has its four corners rounded to provide curved portions 38, thereby improving safety.

[0056] The outer shape of the base plate 3 can be smaller than that of the outer plate 2 (frame portion 20A). For example, in FIG. 6, the length (m) of one side of the base plate 3 is shorter than the length (M) of the opposing side of the outer plate 2. This reduces the area obscured by the base plate 3 when viewing the outer gap 25 from an oblique direction above when cutting the test substrate 6. This widens the area in which the cutting edge 10a can be recognized, making it easier to recognize the cutting edge 10a and check the cutting position. The base plate 3 can be shaped in any shape other than a rectangle (rectangle, square), such as a polygon, ellipse, or circle, or can be irregular. This shape can make it easier to check the cutting position from the outer gap 25, and a notch or opening can be provided to expand the area in which the cutting edge 10a can be recognized. (Inner plate 4)

[0057] The inner plate 4 is an inner pusher disposed inside the cylindrical blade 10 and having a pressing surface 41 that presses against the test substrate 6. The inner plate 4 is pushed out by the elastic body 51 at a position where the cutting edge 10a of the cylindrical blade 10 does not contact the surface of the test substrate 6, and the pressing surface 41 presses against the surface of the test substrate 6 ahead of the cutting edge 10a, pressing and holding the test substrate 6 to prevent it from shifting position. This keeps the test substrate 6 substantially flat, and allows cutting while suppressing swelling, deflection, and outward deformation of the test substrate 6 due to the cutting edge 10a, thereby improving cutting dimensional accuracy. The inner plate 4 can press against the test substrate 6 with the pressing surface 41 without providing the outer plate 2 or by narrowing the width of the outer plate 2 (frame portion 20A and / or spacing portion 20B). Furthermore, the inner plate 4, together with the outer plate 2 (frame portion 20A and / or spacing portion 20B), can press the test substrate 6 with the pressing surfaces 41, 21. While the present disclosure does not specify the shape, thickness, or material of the inner plate 4, for example, the blade mechanism 100 shown in FIGS. 2 and 3 has an inner plate 4 located inside the cylindrical blade 10 and arranged to freely reciprocate in a parallel orientation on the blade-fixed surface of the base plate 3. This inner plate 4 can appropriately determine and adjust the pressing position and area of ​​the test substrate 6, as well as the pressing strength and timing. The outer shape of the inner plate 4 is shaped to fit the inner peripheral surface 14 of the cylindrical blade 10, specifically, slightly smaller than the inner shape of the cylindrical blade 10. The inner plate 4 shown in FIG. 3 has a dumbbell-shaped outer shape, and an inner gap 45 is provided between the outer peripheral surface 43 of the inner plate 4 and the inner peripheral surface 14 of the cylindrical blade 10 to allow the inner plate 4 to reciprocate relative to the cylindrical blade 10.

[0058] The inner plate 4 has a flat pressing surface 41 facing the test substrate 6. When the blade mechanism 100 is not cutting, the inner plate 4 is positioned in a protruding position where the pressing surface 41 protrudes from the cutting edge 10a of the cylindrical blade 10. The inner plate 4 can be positioned in the protruding position when pushed out by the elastic body. By positioning the inner plate 4 in the protruding position, the pressing surface 41 can press the surface of the test substrate 6 ahead of the cutting edge 10a, preventing the test substrate 6 from shifting position and maintaining the test substrate 6 in a substantially flat state. Furthermore, the pressing surface 41 in the protruding position prevents the cutting edge 10a from protruding from the underside (pressing surface 41) of the inner plate 4, improving handling safety. The protruding length (h) of the protruding portion 46 of the inner plate 4 protruding from the cutting edge 10a is preferably 1 mm or more, and more preferably 2 mm or more. When the fingertip is unintentionally pressed forcefully against the pressing surface 41, for example, by gripping the pressing surface 41, even if the soft skin of the fingertip sinks into the inner gap 45 or the outer gap 25, contact with the cutting edge 10a can be prevented, improving safety and making it more reliable.

[0059] 6, when not cutting, the blade mechanism 100 has the pressing surface 21 of the outer plate 2 and the pressing surface 41 of the inner plate 4 both positioned in a protruding position protruding from the cutting edge 10a of the cylindrical blade 10. The outer plate 2 and the inner plate 4 sandwich the cutting edge 10a from both the outside and inside, with the pressing surfaces 21, 41 positioned in a protruding position, hiding the cutting edge 10a and preventing workers from unintentionally touching the cutting edge, improving the safety of handling the blade mechanism 100. When not cutting, the blade mechanism 100 has the pressing surface 21 of the outer plate 2 and the pressing surface 41 of the inner plate 4 positioned on the same plane, allowing the test substrate 6 to be pressed evenly and improving cutting accuracy.

[0060] In the blade mechanism 100 shown in FIG. 6, the inner gap 45 is narrower than the outer gap 25. This allows the pressure surface 41 of the inner plate 4, which is adjacent to the inside of the cylindrical blade 10, to press against the test substrate 6, more efficiently preventing misalignment and improving cutting accuracy. The inner plate 4 shown in FIG. 6 has a narrower inner gap 45 (S3) than the outer gap 25 (S1), and the inner plate 4 (pressing surface 41) is positioned closer to the cutting edge 10a than the outer plate 2 (pressing surface 21). The cylindrical blade 10 shown in FIG. 6 is a single-edged blade with an outer blade surface 15, an inclined outer peripheral surface 13, and the inner plate 4 is positioned closer to the inner peripheral surface 14, which is a vertical surface (including a substantially vertical surface), improving cutting accuracy and ensuring safe and easy handling. Meanwhile, the narrow inner gap 45 improves handling safety while shortening the protruding length of the inner plate 4, and makes the protruding portion 46 positioned nearby easier to see and recognize. On the other hand, the outer gap 25 can be made relatively wide, making it easier to check the cutting edge 10a and the cutting position.

[0061] As shown in Figures 1 and 6, the inner plate 4 allows the protrusion 46 protruding from the cutting edge 10a to be visible and recognized through the outer gap 25 during cutting. The protrusion 46 can be a different color from the cutting edge 10a. A protrusion 46 of a different color from the cutting edge 10a, particularly a conspicuous color, makes the protrusion 46 more visible through the outer gap 25 during cutting, making it easier to recognize and confirm the cutting edge line, the positions of both ends (corners), and the cutting position. The protrusion 46 is positioned so that the underline (bottom surface) is parallel to the cutting edge 10a, making it easy to confirm the cutting edge 10a and the cutting position. This is because the cutting edge 10a cuts the test substrate 6 evenly and the pressing surface 41 presses the test substrate 6 evenly, so the underline (pressing surface 41) of the protrusion 46 is positioned parallel to the cutting edge 10a. (Elastic body 51, connecting rod 52)

[0062] The blade mechanism 100 shown in FIGS. 1 to 3 and 6 includes an elastic body 51 that elastically pushes out the outer plate 2, and a connecting rod 52 that connects the outer plate 2 to the base plate 3 so that the outer plate 2 can move back and forth in a parallel position. The shape, configuration, structure, and positioning of the elastic body 51 and the connecting rod 52 are not specified. However, for example, the elastic body 51 is a compression spring such as a coil spring 51a that is disposed between the outer plate 2 and the base plate 3 in a compressed state and elastically pushes out the outer plate 2. The spring constant of the elastic body 51 can be increased to increase the pressure with which the pressing surface 21 of the outer plate 2 presses the test substrate 6. For example, when the outer plate 2 presses and cuts the test substrate 6, the pressure with which the surface of the test substrate 6 is pressed flat can be set to an optimal value by adjusting the spring constant of the elastic body 51 and the position at which the stopper 54 compresses the elastic body 51. The outer plate 2 is connected to the base plate 3 via an elastic body 51, so that when the cutting edge 10a of the cylindrical blade 10 cuts the test substrate 6, the test substrate 6 is pressed with a predetermined pressing force via the elastic body 51, allowing the test substrate 6 to be cut in a state that suppresses deformation of the test substrate 6.

[0063] The connecting rod 52 stops the pressing surface 21 of the outer plate 2, which is pressed by the elastic body 51, at a protruding position where it protrudes from the cutting edge 10a of the cylindrical blade 10. The lower end of the connecting rod 52 is fixed to the outer plate 2, and the upper end is inserted into a through-hole 53a of the base plate 3 so as to be able to move back and forth. The connecting rod 52 has a stopper 54 at its upper end, which comes into contact with the upper surface of the base plate 3 to determine the protruding position and protruding length of the outer plate 2 from the cutting edge 10a. The protruding position of the outer plate 2 is set, for example, at approximately 1 mm to 1 cm, preferably 2 mm to 8 mm, from the cutting edge 10a.

[0064] The connecting rod 52 has a male thread 52a at its upper end. A nut 54a is threaded onto the male thread 52a, forming a stopper 54. This structure allows the position of the stopper 54 to be adjusted by adjusting the screw-in position of the nut 54a. The stopper 54 can be configured as a double nut with multiple nuts 54a to prevent loosening due to impact. The connecting rod 52 has its male thread 52a inserted from bottom to top into the insertion hole 53b of the outer plate 2 and through the through-hole 53a of the base plate 3, where the nut 54a is threaded into the hole to connect the outer plate 2 to the base plate 3. The connecting rod 52 has a recess 55 on the underside of the outer plate 2 to prevent the screw head 52b from protruding from the underside of the outer plate 2. The connecting rod 52 is positioned in an appropriate location, such as near the four corners of the base plate 3, that allows the outer plate 2 to reciprocate in a parallel position without interfering with the confirmation of the cutting position. (Embodiment 2)

[0065] The test piece cutting device 200 of Figure 12 includes a receiving table 60 having a cutting surface 61 on which the test substrate 6 is placed and cut, a blade mechanism 100 that cuts multiple test pieces 7 from the test substrate 6, and a press mechanism 70 that presses the blade mechanism 100 against the test substrate 6. (cradle 60)

[0066] The receiving base 60 has a cutting surface 61 on which the test substrate 6 is placed and cut. The receiving base 60 is made of, for example, metal, and is positioned horizontally with the cutting surface 61 on its upper surface as a smooth plane. However, the receiving base 60 can also be made entirely or with its surface made of plastic or rubber. A buffer sheet 62 is placed on the cutting surface 61 of the receiving base 60, allowing the test specimen 7 to be punched out while preventing damage to the cutting edge 10a of the blade mechanism 100. The buffer sheet 62 is, for example, a plastic sheet with a thickness of 1 mm to 5 mm. When the receiving base 60 has the buffer sheet 62 laminated on the upper surface of the cutting surface 61, the cutting edge 10a of the blade mechanism 100 can be brought into close contact with or inserted into the buffer sheet 62 in a state in which the test substrate 6 is to be punched out by the blade mechanism 100, allowing the entire circumference of the test specimen 7 to be neatly cut out from the test substrate 6. However, it is not necessary to place a plastic buffer sheet 62 on the upper surface of the receiving base 60. A buffer sheet 62 other than plastic that is cut by the cutting edge 10a but does not damage the cutting edge 10a of the blade mechanism 100, such as a metal softer than the receiving base 60 such as brass or lead, can be laminated on top of it. Alternatively, the blade mechanism 100 can be brought close to or into contact with the cutting surface 61 of the receiving base 60 without laminating a buffer sheet 62, and the test substrate 6 can be punched out and cut. (Press mechanism 70)

[0067] The press mechanism 70 automatically or manually presses down the blade mechanism 100 to cut the test substrate 6 placed on the cutting surface 61 of the receiving table 60 into test pieces 7. The press mechanism 70 of FIG. 12 includes an upper / lower table 71 to which the blade mechanism 100 is attached and fixed, and a cylinder 72 that moves the upper / lower table 71 up and down. The cylinder 72 presses down the blade mechanism 100 fixed to the underside of the upper / lower table 71, cutting the test substrate 6 on the receiving table 60 into test pieces 7. The press mechanism 70 of FIG. 19 has the cylinder 72 positioned vertically, and the lower end of the extendable rod connected to the center of the upper / lower table 71. With the cylinder 72 extending and retracting the rod, the press mechanism 70 moves the upper / lower table 41 up and down while maintaining the horizontal position.

[0068] The above-described test piece cutting device 200 cuts out a plurality of test pieces 7 from the test substrate 6 by punching in the following steps. (1) The blade mechanism 100 is attached to the press mechanism 70. The vertical stand 71 is placed in the raised position by the cylinder 72, and the connecting portion 32 of the base plate 3 is fixed to the lower surface of the vertical stand 71. (2) The test substrate 6 is set on the receiving stand 60. (3) The blade mechanism 100 is lowered by the press mechanism 70. The final position of the test substrate 6 is adjusted while checking the cutting position and the position where the cutting edge 10a contacts the test substrate 6 from the outer gap 25, and the test substrate 6 is set. The upper and lower table 71 is lowered by the cylinder 72, and the pressing surface 21 of the outer plate 2 presses the test substrate 6 on the outside of the cutting line, and the pressing surface 41 of the inner plate 4 presses the test substrate 6 on the inside of the cutting line. (4) In this state, when the vertical table 71 is further lowered, the cutting edge 10a moves vertically downward to cut the test substrate 6. (5) After cutting, the press mechanism 70 raises the blade mechanism 100, pushes out the cut test pieces 7 from each cylindrical blade 10, and collects the test pieces 7. [Industrial Applicability]

[0069] The present invention can be suitably used as a cutting device for cutting test substrates such as rubber and plastic to cut dumbbell-shaped test pieces to be used in tensile tests, impact tests, etc., and as a blade mechanism for use in this cutting device. [Explanation of symbols]

[0070] 100...Cutting mechanism 200...Test piece cutting device 1...Punching blade 2...Outer plate 3...Base plate 4...Inner plate 6...Test substrate 7...Test piece 7X…Test area 7Y...chucking area 7A...(Dumbbell-shaped) test piece 7B...(rectangular, strip-shaped) test piece 10, 10A, 10B, 10C...Cylindrical blade 10a...Cutting edge 10b...(Cutting edge) corner 11...Long blade 11X...Test area cutting blade 11Y...Chuck area cutting blade 12...short blade 13...Outer surface 14…Inner peripheral surface 15...Outer blade surface 17...Inner hollow part 20A…Frame part 20B…Spacing section 20C...Elastic part 20m…vertical frame 20n…Horizontal frame 20X...Convex part 21...Pressure surface 22...Protruding part 23…Inner peripheral surface 23a...opposing surface 23b…Corner 23A…Long blade opposing surface 23B…Short blade opposing surface 24…Slope surface 25...Outer gap 26...Protrusion 28...Bend 32...Connection part 38...Bend 41...Pressing surface 43...Outer surface 45...Internal gap 46...Protruding part 51...Elastic body 51a...coil spring 52...Connecting rod 52a...Male thread 52b...Screw head 53a...Through hole 53b...Through hole 54...Stopper 54a...Nut 55...recess 60…Cradle 61…Cut surface 62...Buffer sheet 70...Press mechanism 71…Upper and lower stand 72...Cylinder

Claims

1. A blade mechanism for cutting the test substrate with a press mechanism, The blade mechanism a base plate fixed to the press mechanism; a punching blade connected to the base plate and having a plurality of cylindrical blades for cutting a plurality of test specimens from the test substrate; The punching blade is configured to arrange the plurality of cylindrical blades in a width direction of the cylindrical blade, The cylindrical blade has a cutting edge at its lower end edge for punching and cutting the test substrate into test pieces, A blade mechanism in which the shape of the blade tip is the outer shape of each test piece to be cut, and each of the cylindrical blades cuts test pieces with a test area of ​​a fixed width (W) from the test substrate.

2. 2. The blade mechanism according to claim 1, the cylindrical blade has a test area cutting blade that cuts the test area of ​​the test piece, a blade mechanism in which the test area cutting blade of the cylindrical blade and the test area cutting blade of another cylindrical blade are arranged in parallel;

3. 2. The blade mechanism according to claim 1, The cylindrical blade includes a test area cutting blade that cuts a test area of ​​the test piece; and a chucking area cutting blade at each end of the test area for cutting the chucking portion of the test piece, A blade mechanism in which the test region cutting blade of the cylindrical blade and the chucking region cutting blade of another adjacent cylindrical blade are arranged in close proximity to each other.

4. 2. The blade mechanism according to claim 1, The plurality of cylindrical blades are A blade mechanism in which the narrowest distance between the cutting edge of the cylindrical blade and the cutting edge of another adjacent cylindrical blade is 1 mm or more and 1 cm or less.

5. 2. The blade mechanism according to claim 1, The plurality of cylindrical blades are A blade mechanism that positions the cylindrical blades so that the distance between the cutting edge of the cylindrical blade and the cutting edge of another adjacent cylindrical blade is within five times the smallest distance between the cutting edge of the cylindrical blade and the cutting edge of the other adjacent cylindrical blade.

6. 2. The blade mechanism according to claim 1, A blade mechanism including an outer plate disposed outside the cylindrical blade and having a pressing surface for pressing against the test substrate.

7. 2. The blade mechanism according to claim 1, The cylindrical blade is a single-edged blade with an outer cutting surface, an outer plate located outside the cylindrical blade and arranged to freely move back and forth in a parallel position on the surface of the base plate on the blade fixing side; The outer plate is shaped to place the cylindrical blade inside, and its inner shape is shaped to fit along the outer peripheral surface of the cylindrical blade, A blade mechanism in which an outer gap is provided between the inner peripheral surface of the outer plate and the outer peripheral surface of the cylindrical blade, allowing the outer plate to move back and forth relative to the cylindrical blade.

8. A blade mechanism according to any one of claims 1 to 7, A blade mechanism having an inner plate disposed inside the cylindrical blade and having a pressing surface for pressing against the test substrate.

9. The blade mechanism according to claim 1; a receiving table having a cutting surface on which a test substrate to be cut into test pieces is placed and cut; a press mechanism that presses the blade mechanism against a test substrate placed on the cutting surface.

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