Blade mechanism for cutting test substrate into test specimens and device for cutting test specimens

Abstract

The simple structure allows for easy separation of the remaining test substrate from the cylindrical blade after cutting. [Solution] The blade mechanism is a blade mechanism that is pressed by a press mechanism 20 to cut a test substrate 6 set on a support base 30, and comprises a cylindrical blade 1 that cuts the test substrate 6 into a test piece 7 of a predetermined shape, and an outer blade 10 connected to the cylindrical blade 1 that cuts the test substrate 6 on the outside of the test piece 7.

Description

Technical Field

[0004] , , , , , , , ,

[0001] The present disclosure relates to a blade mechanism for cutting a sheet-like or plate-like test substrate such as plastic, rubber, or metal into test pieces and a test piece cutting device.

Background Art

[0002] Materials used for various applications are subjected to various tests such as tensile tests and impact tests based on standards such as JIS. For example, rubber used in tires, etc., is made into a sheet-like test substrate of a predetermined thickness as a test material for tensile tests and impact tests, and this is cut into dumbbell-shaped test pieces. The test substrate is cut to dimensions that conform to the JIS standard in terms of thickness and outer shape and is used for tensile tests.

[0003] A blade mechanism having a cylindrical blade for cutting a test substrate into a predetermined shape and a test piece cutting device have been developed. The cylindrical blade can punch out and cut a test piece of a predetermined shape with one up-and-down movement. However, depending on the thickness, hardness, material, shape, etc. of the test material, the remaining test substrate (remaining test substrate) of the cut test piece may remain around the cylindrical blade outside the cylindrical blade. Separating the remaining test substrate from the cylindrical blade requires labor and time, and if the cutting operation process is interrupted for separation, the cutting efficiency decreases, leading to a problem of increased cutting costs. The inventor of the present disclosure has developed a test piece cutting device having an outer pusher (see Patent Document 1). The outer pusher can separate the remaining test substrate within the range where it can elastically press the remaining test piece through an elastic body and move it from the remaining position. However, in the cutting of, for example, a thick test substrate or a hard test substrate, the remaining test substrate firmly fits outside the cylindrical blade, and it may be difficult to separate the remaining test substrate from the cylindrical blade with the elastic force of an elastic body such as a coil spring.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] This disclosure was developed with the aim of further eliminating the above-mentioned shortcomings, and one of its objectives is to provide a blade mechanism and test specimen cutting device that have a simple structure and can facilitate the separation of residual test material remaining on the outside of the cylindrical blade after cutting from the cylindrical blade. The description of the objectives and problems of this disclosure does not preclude the existence of other objectives or problems. Furthermore, the embodiments of this disclosure do not need to solve all of these problems. It is also possible to extract other problems from the description, drawings, and claims of this disclosure. [Means for solving the problem]

[0006] A cutting mechanism according to one aspect of the present disclosure is a cutting mechanism for cutting a test substrate that is pressed by a press mechanism and set on a support, comprising a cylindrical blade for cutting the test substrate into a test piece of a predetermined shape, and an outer blade connected to the cylindrical blade for cutting the test substrate on the outside of the test piece.

[0007] A specimen cutting apparatus according to another aspect of the present disclosure comprises a support for placing a test substrate, a blade mechanism for cutting the test substrate placed on the support, and a press mechanism for pressing the blade mechanism, wherein the blade mechanism comprises a cylindrical blade for cutting the test substrate into a specimen of a predetermined shape, and an outer blade connected to the cylindrical blade for cutting test substrate other than the specimen, and the cylindrical blade and the outer blade cut the test substrate by pressing the blade mechanism with the press mechanism. [Effects of the Invention]

[0008] The above-described blade mechanism and test piece cutting device have a simple structure and feature the ability to easily separate the residual test material remaining on the outside of the cylindrical blade after cutting from the cylindrical blade. [Brief explanation of the drawing]

[0009] [Figure 1]This is a schematic perspective view showing a cutting tool mechanism for cutting a test specimen and a test substrate after cutting, according to one embodiment of the present disclosure. [Figure 2] This is a schematic exploded perspective view showing the cutting mechanism and the test substrate before cutting. [Figure 3] This is a schematic plan view showing an example of the arrangement of the outer cutting edge according to another embodiment of the present disclosure. [Figure 4] This is a schematic plan view showing an example of the arrangement of the outer cutting edge according to another embodiment of the present disclosure. [Figure 5] This is a schematic perspective view showing a cutting tool mechanism according to another embodiment of the present disclosure. [Figure 6] This is a schematic front view showing a test specimen cutting device according to another embodiment of the present disclosure. [Modes for carrying out the invention]

[0010] This disclosure may be defined by the following configurations and features. A cutting mechanism according to one embodiment of the present disclosure is a cutting mechanism for cutting a test substrate that is pressed by a press mechanism and set on a support, and comprises a cylindrical blade for cutting the test substrate into a test piece of a predetermined shape, and an outer blade connected to the cylindrical blade for cutting the test substrate on the outside of the test piece.

[0011] The above configuration is a simple structure having an outer blade connected to a cylindrical blade that cuts the test substrate on the outside of the test piece, and has the advantage of making it easy to separate the remaining test substrate remaining on the outside of the cylindrical blade after cutting from the cylindrical blade. The cylindrical blade is shaped to cut the test piece into a predetermined shape, and the remaining test substrate after cutting the test piece surrounds the cylindrical blade in a shape that conforms to the cylindrical blade, and depending on the thickness, hardness, material, etc. of the test substrate, the inner periphery of the remaining test substrate and its vicinity may press against and grip the outer surface of the cylindrical blade, causing it to become stuck and difficult to separate from the cylindrical blade. The above blade mechanism reduces the force with which the inner periphery of the remaining test substrate presses against and grips the outer surface of the cylindrical blade by the outer blade cutting the remaining test substrate on the outside of the cylindrical blade, thereby preventing it from becoming firmly stuck to the cylindrical blade. The outer blade can cut, punch, and separate the remaining test material to facilitate its separation from the cylindrical blade. This blade mechanism utilizes the action of the cylindrical blade cutting the test material into test pieces by the press mechanism, making it easier and smoother to separate the remaining test material in the same stroke. Therefore, this blade mechanism allows the remaining test material to be easily separated from the cylindrical blade upon completion of the cutting process, returning to the raised position after cutting. This allows for efficient cutting without interrupting the cutting process and reduces cutting costs. Furthermore, this blade mechanism contributes to improving cutting accuracy without degrading the quality of the test pieces, and has the advantage of making it easy to separate the remaining test material from the cylindrical blade. This is because, with increasing thickness and material of the test substrate, the outer surface of the test substrate cut by the pressure of the cylindrical blade may bulge and deform. Furthermore, the cylindrical blade may be distorted and deformed by the pressure of the test substrate, hindering the straightness of the blade tip and causing it to narrow at the bottom and widen at the top, which reduces cutting accuracy. Additionally, the remaining test substrate may become difficult to separate from the cylindrical blade. However, the above blade mechanism is effective because the presence of an outer blade connected to the cylindrical blade reduces and prevents distortion and deformation of the cylindrical blade, as well as bulging and deformation of the outer test substrate.

[0012] In addition to the above embodiments, a blade mechanism according to another embodiment of the present disclosure has a cylindrical blade with a cylindrical cutting edge at its lower end for cutting the test substrate into a test piece, and an outer blade with an outer cutting edge at its lower end for cutting the test substrate, and the outer cutting edge of the outer blade can be made to be substantially the same height as the cylindrical cutting edge of the cylindrical blade. The above configuration has the advantage of a simple structure in which the outer cutting edge of the outer blade is substantially the same height as the cylindrical cutting edge of the cylindrical blade, and the residual test substrate remaining on the outside of the cylindrical blade after cutting can be easily separated from the cylindrical blade. Furthermore, the above configuration allows the cylindrical blade and the outer blade to cut the test substrate simultaneously, reduces distortion of the cylindrical blade, improves straightness in the cutting direction, suppresses and reduces outward bulging and deformation of the test substrate, and improves the cutting accuracy of the test piece. In this disclosure, the statement that the outer cutting edge of the outer blade is "substantially the same height as the cylindrical cutting edge of the cylindrical blade" means that the cutting edge of the outer blade is positioned within 5 mm above or below the cutting edge of the cylindrical blade, or that the outer cutting edge of the outer blade is positioned within ±5% of the height (H) of the cylindrical blade.

[0013] In addition to the above embodiments, the blade mechanism according to other embodiments of this disclosure allows the outer blade to extend in a linear manner. This configuration has a simple structure in which the side blade extends in a linear manner, and has the advantage that the remaining test material remaining on the outside of the cylindrical blade after cutting can be easily separated from the cylindrical blade. This is because the outer blade, which is connected to the cylindrical blade and extends in a linear manner, cuts, thereby reducing the force with which the inner periphery and vicinity of the remaining test material press against and grip the outer surface of the cylindrical blade.

[0014] In addition to the above embodiments, the blade mechanism according to other embodiments of the present disclosure allows the outer blade to extend outward by 1 cm or more from the cylindrical blade. This configuration has the advantage of a simple structure in which the outer blade extends outward by 1 cm or more, which reduces the force with which the inner periphery of the remaining test material presses and grips the outer surface of the cylindrical blade, and allows the remaining test material remaining on the outside of the cylindrical blade after cutting to be easily separated from the cylindrical blade.

[0015] Other embodiments of the blade mechanism of this disclosure may have a plurality of outer blades in addition to the above embodiments. The above configuration has the advantage of a simple structure with a plurality of outer blades, the ability to cut the remaining test material at multiple spaced positions, the ability to reduce the force with which the inner periphery presses and grips the outer surface of the cylindrical blade, and the ability to easily separate the remaining test material remaining on the outside of the cylindrical blade after cutting from the cylindrical blade.

[0016] In addition to the above embodiments, the blade mechanism according to other embodiments of this disclosure can have two or more outer blades arranged in a parallel position. The above configuration is a simple structure in which two or more outer blades are arranged in a parallel position, and has the features that, for example, they can be spaced apart to cut in parallel, they can be connected to partially separate the remaining test material, they can be arranged symmetrically or on short blades and long blades on both sides to separate the remaining test material into two or more pieces, the force with which the inner periphery presses and grips the outer surface of the cylindrical blade can be reduced, and the remaining test material remaining on the outside of the cylindrical blade after cutting can be easily separated from the cylindrical blade.

[0017] In addition to the above embodiments, the blade mechanism according to other embodiments of this disclosure can connect the outer blade perpendicularly to the cylindrical blade. This configuration has the advantage that the outer blade can cut with a cutting line perpendicular to the inner edge (inner surface) of the remaining test material, the force with which the inner edge presses and grips the outer surface of the cylindrical blade can be reduced, and the remaining test material remaining on the outside of the cylindrical blade after cutting can be easily separated from the cylindrical blade. The above blade mechanism has the advantage that, by connecting the outer blade perpendicularly to the cylindrical blade, distortion and deformation of the cylindrical blade and swelling and deformation of the outer test material can be effectively reduced and prevented, cutting accuracy can be improved, and the remaining test material can be easily separated from the cylindrical blade.

[0018] In addition to the above embodiments, a cutting mechanism according to another embodiment of the present disclosure has a cylindrical cutting tool having a pair of long blades for cutting both side edges on the long side of the test piece, and a pair of short blades connected to both ends of the long blades for cutting both side edges on the short side of the test piece, and an outer cutting tool can be provided connected to the short blades. The above cutting mechanism has the advantage that the cutting of the outer cutting tool has minimal impact on the cutting of the test area, while the remaining test material can be easily separated from the cylindrical cutting tool.

[0019] In addition to the above aspect, the cutting tool mechanism according to another embodiment of the present disclosure has a cylindrical cutting tool having a test area cutting edge for cutting the test area of the test piece and a chucking area cutting edge for cutting the chucking area of the test piece, and the outer cutting tool can be connected to the chucking area cutting edge. The above cutting tool mechanism has the feature that the remaining test substrate can be easily separated from the cylindrical cutting tool while minimizing the influence of the cutting of the outer cutting tool on the cutting of the test area.

[0020] In addition to the above aspect, the cutting tool mechanism according to another embodiment of the present disclosure has a cylindrical cutting tool having a test area cutting edge for cutting the test area of the test piece and a chucking area cutting edge for cutting the chucking area of the test piece, and the outer cutting tool can be connected to the test area cutting edge. The above cutting tool mechanism has the feature that the presence and cutting of the outer cutting tool can contribute to the improvement of the cutting accuracy and make it easier to easily separate the remaining test substrate from the cylindrical cutting tool.

[0021] In addition to the above aspect, the cutting tool mechanism according to another embodiment of the present disclosure can divide the remainder of the test substrate other than the test piece (remaining test substrate) into two or more parts by the outer cutting tool. The above cutting tool mechanism has the feature that it can cut the remaining test substrate into a state where it can be surely separated from the cylindrical cutting tool.

[0022] In addition to the above aspect, the cutting tool mechanism according to another embodiment of the present disclosure can make the length (L2) of the outer cutting edge of the outer cutting tool not less than the width (Z) of the remaining test substrate other than the test piece to be cut. The above configuration has the feature that it can surely divide the remaining test substrate cut by the outer cutting tool, can significantly or efficiently reduce the force for pressing and clamping the outer surface of the cylindrical cutting tool by the inner peripheral edge, and can easily separate the remaining test substrate remaining outside the cylindrical cutting tool after cutting from the cylindrical cutting tool.

[0023] A specimen cutting apparatus according to another embodiment of the present disclosure comprises a support for placing a test substrate, a blade mechanism of any of the above embodiments for cutting the test substrate placed on the support, and a press mechanism for pressing the blade mechanism, wherein the blade mechanism comprises a cylindrical blade for cutting the test substrate into a specimen of a predetermined shape, and an outer blade connected to the cylindrical blade for cutting test substrate other than the specimen, and the cylindrical blade and the outer blade cut the test substrate by pressing the blade mechanism with the press mechanism. The specimen cutting apparatus described above has a simple structure connected to the cylindrical blade, and has the advantage that residual test substrate remaining on the outside of the cylindrical blade after cutting can be easily separated from the cylindrical blade, thus reducing the cost of the cutting process and work.

[0024] The present invention will be described in detail below with reference to the drawings. In the following description, terms indicating specific directions or positions (for example, "up," "down," and other terms including these) will be used as needed. The use of these terms is for the purpose of facilitating the 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. Also, parts with the same reference numerals appearing in multiple drawings indicate the same or equivalent parts or components. Furthermore, the embodiments described below illustrate specific examples of the technical concept of the present invention and do not limit the present invention to those described below. Also, the dimensions, materials, shapes, and relative arrangements of the components described below are intended to be illustrative, and not to limit the scope of the present invention unless otherwise specified. Moreover, the content described in one embodiment or example is applicable to other embodiments and examples. Furthermore, the dimensions and sizes in the schematic diagrams are not precise, and the size and positional relationships of the members shown in the drawings may be exaggerated for clarity. The vertical direction is specified in the drawings. (Test substrate 6, test specimen 7)

[0025] The test substrate 6, used for various applications, is cut into test pieces 7, and various tests such as tensile tests, impact tests, burst tests, and tear tests are performed according to standards. The test piece 7 has a test area 7X of predetermined dimensions and shape. This disclosure does not specify the material, thickness, shape, size, etc., of the test substrate 6, but includes all test substrates 6 used for tensile tests, etc. The test substrate 6 may include one or more of the following: plastic, rubber, vinyl, paper, metal, carbon fiber, aramid fiber, SiC fiber, glass fiber, high-performance fibers, or prepregs (CFRP, CFRTP). In addition to flexible materials, the test substrate 6 may also include inorganic materials that are hardly flexible, such as ceramics, and the cutting mechanism 1 can punch and cut the test substrate 6 with a cylindrical blade 1 without damaging it. The test piece 7 exemplified in Figure 1, etc., is dumbbell-shaped, with a narrow test area 7X in the center and wide chucking areas 7Y at both ends of the test area 7X. The tensile strength of the test area 7X is measured by chucking the test specimen 7 at both ends 7Y with a testing machine and cutting it to a specific width. However, this disclosure does not specify the shape or dimensions of the test specimen 7 to be cut. The test specimen 7 can be any shape or dimension as specified and tested, including dumbbell shape and other shapes. (Embodiment 1, blade mechanism 100)

[0026] The blade mechanism 100 according to Embodiment 1 shown in Figures 1 and 2 cuts the test substrate 6 into test pieces 7. The blade mechanism 100 is a blade mechanism that is pressed against the press mechanism 20 to cut the test substrate 6 set on the support base 30, and comprises a cylindrical blade 1 for cutting the test substrate 6 into test pieces 7 of a predetermined shape, and an outer blade 10 connected to the cylindrical blade 1 for cutting the test substrate 6 on the outside of the test piece 7. (Cylindrical blade 1)

[0027] The cylindrical blade 1 has a cylindrical shape for cutting the test substrate 6 into a predetermined shape. The cylindrical blade 1 can cut test pieces 7 of various shapes by setting the shape of the blade tip 1a to the outer shape of the test piece 7 to be cut. The cylindrical blade 1 illustrated in Figures 1 and 2 cuts the test substrate 6 into a dumbbell-shaped test piece 7. The cylindrical blade 1, which has a longitudinal direction and a transverse direction, has a pair of long blades 2A for cutting both side edges on the long side of the test piece 7, and a pair of short blades 2B connected to both ends of the long blades 2A for cutting both side edges on the transverse side of the test piece 7. The pair of long blades 2A has a test area cutting blade 2X for cutting both sides of the test area 7X, and a chucking area cutting blade 2Y for cutting both sides of the chucking area 7Y. The cylindrical blade 1 is a hollow cylinder and has an inner hollow portion.

[0028] The cylindrical cutting tool 1 can be manufactured, for example, by bending a metal plate with a thickness of 2 mm to 10 mm and welding it into a cylindrical shape, or by cutting and machining a metal block into a cylindrical shape using methods such as electrical discharge machining. The cylindrical cutting tool 1 is made of steel that can be hardened, but preferably, carbon steel with excellent workability is suitable. The carbon content of the carbon steel is adjusted to an optimal value considering the required hardness and brittleness. Carbon steel can be made harder by increasing the carbon content. However, if the carbon content is high, it becomes brittle, so carbon steel with a carbon content of, for example, 0.4% or more and 1.4% or less, preferably 0.45% or more and 0.7% or less is used.

[0029] The cylindrical blade 1 can have a cutting edge 1a formed by grinding the lower end of the cylindrical outer surface and / or the cylindrical inner surface. The cylindrical blade 1 in Figure 1 has a cylindrical cutting edge 1a at its lower end for cutting the test substrate 6 into a test piece 7, and has an outer cutting surface at the lower end of the cylindrical outer surface to form a single-edged cutting edge 1a. The cylindrical blade 1 can have a cutting edge 1a formed by grinding the lower end of the cylinder with a grinding wheel or file. The cutting edge 1a has an outer cutting surface formed by grinding the lower end of the cylindrical outer surface. The single-edged cutting edge 1a can cut the test substrate 6 to a predetermined size and shape. The single-edged cutting edge 1a can have a modified cutting surface that is narrower in vertical width than the outer cutting surface along the lower end on the inner surface side, and the cutting edge 1a can be positioned off-center to the outer surface of the cylindrical inner surface. As the thickness of the test substrate 6 increases, the vertical cutting ability of the single-edged blade tip 1a decreases, and the side of the cut test piece 7 may narrow at the bottom and widen at the top, resulting in a mismatch or error between the top and bottom surfaces of the test piece 7 on the side where cutting begins. This can make it easier for the remaining test substrate 8 to get caught in the cylindrical blade 1 and may also cause problems with cutting accuracy. However, the outer blade 10 can mitigate or eliminate this problem, improving the vertical cutting ability of the cylindrical blade 1 and thus improving cutting accuracy. This is because the outer blade 10, when connected to the cylindrical blade 1, can suppress distortion of the cylindrical blade 1, improve vertical cutting ability, and the outer blade 10 can suppress swelling and deformation of the test substrate 6 on the outside of the cylindrical blade 1.

[0030] The blade mechanism 100 may have a connecting portion 3 that connects the cylindrical blade 1 to the press mechanism 20. The connecting portion 3 illustrated in Figures 2 and 6 connects the cylindrical blade 1 to the press mechanism 20 via a first plate 4. The first plate 4 is connected and fixed above the cylindrical blade 1, and completely or partially closes the upper opening. The first plate 4 can also be connected to the outer blade 10. However, the blade mechanism 100 can be connected to the press mechanism 20 by members and structures other than the first plate 4, and the blade mechanism 100 may have a structure that does not have the first plate 4. (Outside knife 10)

[0031] The outer blade 10 cuts the test substrate 6 (residual test substrate 8) outside the test piece 7, except for the test piece 7. The outer blade 10 is connected to the cylindrical blade 1 and cuts the residual test substrate 8 that is positioned outside the cylindrical blade 1. The outer blade 10 cuts in a way that reduces, releases, disperses, and facilitates separation of the residual test substrate 8 from the cylindrical blade 1 by reducing, releasing, and dispersing the force that the residual test substrate 8 exerts on the cylindrical blade 1 by cutting in a shape that does not firmly surround the cylindrical blade 1 along the outer surface of the cylindrical blade 1, thereby facilitating the separation of the residual test substrate 8 from the cylindrical blade 1. The outer blade 10 has an outer extension portion 11 that extends outward from the cylindrical blade 1 and an outer connecting portion 13 that connects the outer extension portion 11 to the cylindrical blade 1. The outer extension portion 11 in Figures 1 to 4 is flat and has a linear extension portion 12 that extends linearly outward from the outer connecting portion 13. The linear extension portion 12 can efficiently cut and shave the remaining test material 8 in a linear manner over the shortest distance, severing the continuity and connection that the remaining test material 8 has along the cylindrical blade 2, and reducing the force with which the remaining test material 8 presses and grips the cylindrical blade 1. The outer extension portion 11 can also have shapes other than a straight line, for example, it can be curved, or a combination of a straight and curved shape, and multiple outer extension portions 11 extending in different directions can be connected. It can have a curved portion that curves, a bent portion that flexes and bends, and a bent portion that connects the outer extension portions 11. The outer extension portion 11 in Figures 1 and 2 is in an upright, vertical position, similar to the cylindrical blade 1, but it can also be in an inclined position. This disclosure does not specify the number, arrangement, shape, size, length, orientation, or connection angle of the outer blades 10, but rather allows the use of any structure or configuration that can cut the remaining test substrate 8 and facilitate its separation from the cylindrical blade 1.

[0032] The outer blade 10 has an outer cutting edge 10a at its lower end for cutting the test substrate 6. The shape, arrangement, orientation, and structure of the outer cutting edge 10a can define, set, and adjust the straightness, perpendicularity, and cut surface of the cutting direction, and are determined within an appropriate range. The outer cutting edge 10a can be a single-edged or double-edged cutting edge. The outer cutting edge 10a can be substantially the same height as or different from the cylindrical cutting edge 1a of the cylindrical blade 1. By setting the outer cutting edge 10a of the outer blade 10 to be substantially the same height as the cylindrical cutting edge 1a of the cylindrical blade 1, the cylindrical blade 1 and the outer blade 10 can cut the test substrate 6 simultaneously. By positioning the outer cutting edge 10a of the outer blade 10 within 5 mm above or below the cutting edge 1a of the cylindrical blade 1, or within ±5% of the height (H) of the cylindrical blade 1, the outer cutting edge 10a can be made to be substantially the same height as the cylindrical cutting edge 1a of the cylindrical blade 1, allowing the cylindrical blade 1 and the outer blade 10 to start cutting the test material 6 simultaneously. Alternatively, by positioning the outer cutting edge 10a of the outer blade 10 higher than the cutting edge 1a of the cylindrical blade 1, the outer cutting edge 10a of the outer blade 10 can start cutting the test material 6 after the cutting edge 1a of the cylindrical blade 1. By positioning the outer cutting edge 10a of the outer blade 10 lower than the cutting edge 1a of the cylindrical blade 1, the outer cutting edge 10a of the outer blade 10 can start cutting the test material 6 before the cutting edge 1a of the cylindrical blade 1.

[0033] The length (L2), thickness (w), height (t), shape, and structure of the outer blade 10 are set and selected within an appropriate range depending on the thickness, material, degree of clogging of the test piece 7, and the width of the remaining test substrate 8. The thickness (w) of the outer blade 10 is set to be greater than or equal to the thickness required to cut the remaining test substrate 8, for example, 2 mm to 10 mm. The thickness (w) of the outer blade 10, the difference in thickness between the upper end of the outer blade 10 or the upper part to be cut and the outer blade tip 10a, the degree of reduction in thickness (w) toward the outer blade tip 10a, and the height, shape, and position (uneven location) of the outer blade tip 10a can be adjusted to control the cutting resistance and the width that is inserted and used to widen the cutting line. The thickness (w) and height (t) of the outer blade 10 can be the same overall or partially different (w) and height (t). For example, the outer blade 10 can have its thickness (w) reduced from the connecting portion 3 towards the outer tip, making the thickness (w) at the tip thinner than that of the connecting portion 3. The outer blade 10 can have the same or different thickness, height, size, and material as the cylindrical blade 1. By making the outer blade 10 thinner than that of the cylindrical blade 1, the cutting resistance is reduced, making it easier to separate the remaining test material 8. The length (L2) of the outer blade 10 (outer extension portion 11) from the outer connecting portion 13 to the outermost tip can be set to, for example, 1 cm or more, to ensure a width that facilitates cutting, slicing, and separating the remaining test material 8 that surrounds, clamps, and is continuously connected by the cylindrical blade 1. The length (L2) of the outer extension portion 11 can be determined according to the width (z) of the remaining test material 8 to be cut. The length (L2) of the outer extension 11 can be, for example, 40% or less, 30% or less, of the longitudinal length (L1) of the cylindrical blade 1, and can be greater than or less than the transverse length of the cylindrical blade 1. It can be less than or equal to the maximum width between the cutting edges 1a in the transverse direction of the cylindrical blade 1 (width of the chucking area cutting blade 7Y (W2) in Figure 2). It can be greater than or equal to the minimum width between the cutting edges 1a in the transverse direction of the cylindrical blade 1 (width of the test area cutting blade 7X (W1) in Figure 2). The height (t) of the outer blade 10 can be greater than or equal to the thickness of the remaining test substrate 8 so as to cut the remaining test substrate 8, and can be the same height as or different from the height of the cylindrical blade 1.

[0034] The outer blades 10 can have a shape that separates and divides the remaining test material 8 into two or more parts. In the pair of outer blades 10 shown in Figures 1 and 2, the length (L2) of each blade is set to be greater than or equal to the width (Z) of the remaining test material 8 that each outer blade 10 cuts. The pair of outer blades 10 cuts the remaining test material 8 into two parts, remaining test material 8A and 8B, and the force with which the remaining test material 8A and 8B press and grip the cylindrical blade 1 in the shorter direction is greatly reduced, allowing the remaining test material 8A and 8B to be separated from the cylindrical blade 1 very easily and reliably, thereby making the cutting process more efficient and cost-effective. The force with which the two divided remaining test material 8A and 8B press and grip the cylindrical blade 1 on the inner edge side is greatly reduced, so they do not rise with the cylindrical blade 1 when it rises in the press mechanism 20, or they fall due to their own weight when it rises, or they can be separated very easily from the outside of the cylindrical blade 1. In Figure 1, the outer blade 10 is connected perpendicularly to the short blade 2B of the cylindrical blade 1, but the outer blade 10 can also be connected to the long blade 2A. In Figure 1, the length (L2) of both of the pair of outer blades 10 is greater than or equal to the width (Z) of the remaining test substrate 8, but only one of them can be greater than or equal to the width (Z) of the remaining test substrate 8, and the length (L2) of three or more outer blades 10 can be greater than or equal to the width (Z) of the remaining test substrate 8. In Figure 5, the length (L2) of the outer blade 10 is less than the width (Z) of the remaining test substrate 8, but by cutting and severing the continuity and connection that the remaining test substrate 8 has along the cylindrical blade 2, the force with which the remaining test substrate 8 presses and grips the cylindrical blade 1 can be reduced, and the separation of the remaining test substrate 8 from the cylindrical blade can be facilitated. If the length (L2) of the outer blade 10 is greater than or equal to the width (Z) of the remaining test substrate 8, the outer blade 10 may have a non-cutting edge portion at the lower end of the outer tip, without an outer cutting edge 10a. This structure improves the safety of handling the blade mechanism and allows for smooth, easy, and safe setting of the test substrate 6 onto the support base 30.

[0035] The cutting mechanism 100 has one or more outer cutting blades 10 for one cylindrical cutting blade 1. The cutting mechanism 100 in Figures 1 and 2 has two outer cutting blades 10, and the two outer cutting blades 10 are arranged symmetrically as a pair. The pair of outer cutting blades 10 in Figures 1 and 2 has a first outer cutting blade 10A1 and a second outer cutting blade 10A2. The outer cutting blades 10 have one or more outer connecting parts 13 that connect to the cylindrical cutting blade 1. The one or more outer cutting blades 10 can be arranged and connected in any of the postures and positions shown, for example, in Figures 3 and 4. The outer blades 10 can be connected to the short blades 2B (10A1~10A2) and / or the long blades 2A (10B1~10B2, 10C1~10C2, 10D1~10D6) of the cylindrical blade 1, and can be connected to the chucking area cutting blades 2Y (10A1~10A2, 10B1~10B2, 10C1~10C2) and / or the test area cutting blades 2X (10D1~10D6) of the cylindrical blade 1. One or more outer blades 10 can be connected to the test area cutting blades 2X (10D1~10D6). Two or more pairs of outer blades 10 can be arranged in symmetrical positions with respect to a line or point (e.g., 10A1 and 10A2, 10B1 and 10B2, 10C1 and 10C2, 10D1-10D3 and 10D4-10D6, 10B1 and 10C1, 10D1 and 10D3, etc.). A pair of outer blades 10 can be connected to the short blades 2B, long blades 2A, chucking area cutting blades 2Y, and test area cutting blades 2X on either side or one side of the cylindrical blade 1 (10A1-10A2, 10B1-10B2, 10C1-10C2).

[0036] The first outer blade 10A1 and the second outer blade 10A2, illustrated in Figures 1 and 2, are positioned on both sides and at both ends of the cylindrical blade 1, with each outer connecting portion 13 connecting perpendicularly to the central flat portion of the short blades 2B on both sides, excluding the corners 1b, and the outer extensions 11 each extending outward from the outer connecting portion 13 toward opposite sides. The outer blades 10 can be connected to the central flat portion of the cylindrical blade 1, excluding the corners 1b of the short blades 2B and long blades 2A, in either the longitudinal or transverse direction. Furthermore, the outer blades 10 can be positioned and connected such that they form perpendicular bisectors that perpendicularly intersect and bisect the longitudinal or transverse direction of the cylindrical blade 1, the short blades 2B and long blades 2A. In addition, the outer blades 10 (outer extensions 11) can be positioned on a straight line connecting the center point, which is the intersection of the diagonals of the rectangular cylindrical blade 1, and the outer connecting portion 13. The outer blades 10 can be positioned on a centerline that bisects the test piece 7 in either its longitudinal or transverse direction. The outer connecting portion 13 in Figures 1 and 2 connects to the flat portion of the cylindrical blade 1 other than the corner portion 1b, but as illustrated in Figure 4, one or more outer blades 10 (e.g., 10E1 to 10E8) can be provided at the corner portion 1b of the cylindrical blade 1. These outer blades 10 are connected to the corner portion 1b of the cylindrical blade 1 and can reduce the force with which the remaining test substrate 8 presses and grips the cylindrical blade 1 at the corner portion 1b. The outer blades 10 (outer extension portion 11) can be positioned parallel and / or perpendicular to one side of the cylindrical blade 1, the short blade 2B, the long blade 2A, the chucking area cutting blade 2Y, or the test area cutting blade 2X. The first outer blade 10A1 and the second outer blade 10A2 each have an outer connecting portion 13 that connects one end at the base to the cylindrical blade 1, and an outer extension portion 11 extends from the outer connecting portion 13 to the outside of the cylindrical blade 1, with the other end being positioned in an unconnected state without being connected to the cylindrical blade 1. The pair of outer blades 10 in Figures 1 and 2 have the same shape, size, thickness, material, connection, and manufacturing method, but two or more outer blades 10 can have different shapes, sizes, thicknesses, materials, and manufacturing methods.

[0037] Multiple outer blades 10 can be arranged spaced apart from each other (for example, Figures 1 and 2), or they can be arranged in close proximity, parallel or non-parallel, or intersecting and connected. The outer blades 10 can cut the remaining test substrate 8 in a linear fashion, and can also cut in a way that separates a portion of the remaining test substrate 8. The outer blades 10 can have a shape that allows them to punch out separation pieces that partially separate from the remaining test substrate 8. The outer blades 10, together with the cylindrical blade 1, punch out and cut three-dimensional separation pieces from the remaining test substrate 8, thereby creating missing portions, openings, and gaps on the inner circumferential surface side of the remaining test substrate 8, severing the connectivity and continuity of the remaining test substrate 8, and efficiently reducing the force with which the remaining test substrate 8 presses and grips the outer surface of the cylindrical blade 1 in the gaps, thereby facilitating the separation of the remaining test substrate 8 from the cylindrical blade 1. The shape of the separation piece is not specified, but is determined by being surrounded by the outer blade 10 and the cylindrical blade 1, or by being surrounded by the outer blade 10. It can be a regular shape (including approximate shapes) or an irregular shape, such as a triangle, quadrilateral or other polygon, semicircle, semi-ellipse, circle, or ellipse. The outer blade 10 can be configured to form a triangle of separation piece, for example, an isosceles triangle, equilateral triangle, right triangle, or a triangle with sides of different lengths. The outer blade 10 can also be configured to form a shape that facilitates the separation of the remaining test substrate 8 from the cylindrical blade 1, such as an elongated quadrilateral, polygon, or a curved shape, depending on the shape of the cylindrical blade 1 and the remaining test substrate 8. The separating piece can be shaped to conform to the outer shape of the cylindrical blade 1, or to be shaped to contact the outer shape of the cylindrical blade 1, or to include corners 1b of the cylindrical blade 1, or parts where the width (W) of the cylindrical blade 1 increases or decreases, thereby reducing the area in contact between the remaining test substrate 8 and the outer surface of the cylindrical blade 1, and reducing the force pressing and gripping the cylindrical blade 1. The cutting shape of the outer blade 10 and the cylindrical blade 1 connected to the outer blade 10 can be T-shaped, L-shaped, cross-shaped, X-shaped, V-shaped, etc. The outer blade 10 can also be drilled with through holes and openings to provide through holes and openings in the remaining test substrate 8.

[0038] The outer connecting portion 13 can connect the outer extension portion 11 to the cylindrical blade 1 in a perpendicular and / or parallel position, and can also connect in positions other than perpendicular or parallel. As illustrated in Figures 1 to 4, the outer connecting portion 13 can connect the outer extension portion 11 to the outer surface of the cylindrical blade 1 at a right angle, and can also connect at an acute or obtuse angle.

[0039] The blade mechanism 100 may have a contact portion that contacts the remaining test substrate 8 after the cylindrical blade 2 has cut the test piece 7 and the outer blade 10 has cut the remaining test substrate 8, thereby separating the remaining test substrate 8 from the cylindrical blade 1. The contact portion may have irregularities, for example, provided at a position greater than or equal to the thickness of the test substrate 6 from the lower end of the cylindrical blade 2 and / or the outer blade 10, so that it can contact and press against the remaining test substrate 8 after cutting, and also slightly shift the position of the remaining test substrate 8 after cutting, thereby facilitating its separation from the cylindrical blade 1.

[0040] The blade mechanism 100 can have two or more cylindrical blades 1, depending on the number and arrangement of the test pieces 7 to be cut in the same stroke. Each of the two or more cylindrical blades 1 can have an outer blade 10, and can also have an outer blade 10 that connects adjacent cylindrical blades 1. The outer blade 10 can connect the short blades 2B and / or the long blades 2A of adjacent cylindrical blades 1. The blade mechanism 100 described above can cut multiple test pieces 7 simultaneously and facilitate the separation of the remaining test material 8 from the cylindrical blades 1. The outer blade 10 that connects adjacent cylindrical blades 1 can cut, divide, and separate the remaining test material 8 with one outer blade 10, making it possible to separate the remaining test material from adjacent cylindrical blades 1. (Embodiment 2)

[0041] The specimen cutting device 200 according to Embodiment 2 illustrated in Figure 6 comprises a support table 30 on which the test substrate 6 is placed, a blade mechanism 100 for cutting the test substrate 6 placed on the support table 30 into a specimen 7, and a press mechanism 20 for pressing the blade mechanism 100 against the test substrate 6. (Support stand 30)

[0042] The support stand 30 has a cutting surface 31 for placing the test substrate 6 in a predetermined position and cutting it. The cutting surface 31 is shaped to match the test substrate 6 so that the test substrate 6 can be set in a predetermined position. In Figure 6, the cutting surface 31 is a smooth plane provided in a horizontal position, and the test substrate 6 is positioned in a horizontal position. The support stand 30 can be made of metal, or it can be made of materials other than metal in whole or in part, for example, the surface can be made of plastic or rubber. In the case of a metal support stand 30, a cushioning sheet 32 ​​is placed on the cutting surface 31 as shown in Figure 6. The cushioning sheet 32 ​​can punch out and cut the test substrate 6 and remaining test substrate 8 into a predetermined shape while preventing damage to the cutting edge 1a and outer cutting edge 10a of the blade mechanism 100. The cushioning sheet 32 ​​is an elastic sheet made of plastic, rubber, etc., with a thickness of 1 mm to 5 mm. The support base 30, which has a cushioning sheet 32 ​​laminated on its upper surface, can be used to cleanly cut the entire circumference of the test piece 7 from the test substrate 6 by bringing the cutting edge 1a of the cutting mechanism 100 into close contact with the cushioning sheet 32, or by inserting the cutting edge 1a of the cutting mechanism 100 into the surface of the cushioning sheet 32, while the test substrate 6 is being punched out by the cutting mechanism 100. However, the support base 30 does not necessarily need to have a plastic cushioning sheet 32 ​​on its upper surface. Instead of a plastic cushioning sheet 32, a cushioning sheet 32 ​​other than plastic that is cut by the cutting edge 1a but does not damage the cutting edge 1a, such as a metal softer than the support base 30, such as brass or lead, can be laminated, or the cutting mechanism 100 can be brought close to or in contact with the cutting surface 31 of the support base 30 to punch out and cut the test substrate 6. (Press mechanism 20)

[0043] The press mechanism 20 moves the cylindrical blade 1 of the blade mechanism 100 in a direction that presses it against the test substrate 6, cutting the test substrate 6 placed on the cutting surface 31 of the support base 30 into a test piece 7. The press mechanism 20 moves the blade mechanism 100 in a first direction. In this disclosure, the first direction indicates the direction in which the press mechanism 20 moves the blade mechanism 100. In Figure 6, the first direction is the vertical direction and includes a downward direction (downward direction) in which the cylindrical blade 1 approaches the support base 30 and a direction (upward direction) in which the cylindrical blade 1 moves away from the support base 30. The press mechanism 20 moves the blade mechanism 100 in the first direction within the range of its stroke, with the uppermost position where the cylindrical blade 1 is furthest away from the support base 30 being the upward position before cutting or at the end of the cutting process, and the lowermost position where the cylindrical blade 1 is closest to the support base 30 being the cutting position. The difference between the upward position and the cutting position of the cylindrical blade 1 is the movable distance. The press mechanism 20 moves the blade mechanism 100 back and forth between a raised position and a cutting position. The cutting process begins with the blade mechanism 100 in the raised position, cutting the test piece 7 and the remaining test substrate 8 at the cutting position, and then returning to the raised position to complete the cutting. The press mechanism 20 moves (descends) the cylindrical blade 1 from the raised position furthest from the support base 30 toward the support base 30, cuts the test substrate 6 at the cutting position closest to the support base 30, and after cutting moves (rises) toward the support base 30, returning to the initial raised position. In Figure 6, the press mechanism 20 moves the blade mechanism 100 vertically up and down relative to the test substrate 6 which is positioned horizontally, pushes the blade mechanism 100 down to cut the test substrate 6, and after cutting pulls up the blade mechanism 100 and moves toward the support base 30 (test substrate 6).

[0044] The press mechanism 20 is not structurally specific and can use any structure that moves the connected blade mechanism 100 in a first direction, including, for example, hydraulic, pneumatic, mechanical, automatic, and manual types. The press mechanism 20 illustrated in Figure 6 includes a connecting part 22 that is attached to and fixed to the connecting part 3 on the blade mechanism 100 side, and a cylinder 21 that reciprocates the blade mechanism 100, connected via the connecting parts 3 and 22, in a first direction toward and away from the receiving base 30. The connecting part 22 can directly or indirectly connect and fix the blade mechanism 100 to the cylinder 21, and the blade mechanism 100 fixed to the lower part of the connecting part 22 can be pushed down by the cylinder 21 to cut the test substrate 6 on the receiving base 30 into a test piece 7. In the press mechanism 20 of Figure 6, the cylinder 21, which is positioned vertically, reciprocates up and down while holding the blade mechanism 100 in a horizontal position. The lower end of the cylinder 21 is connected to the center of the first plate 4.

[0045] The test specimen cutting device 200 may have a contact portion that contacts the remaining test substrate 8 after cutting the test specimen 7, separating it from the cylindrical blade 1. This contact portion is connected to the press mechanism 20 and can be fixed in a predetermined position. In this configuration, when the press mechanism 20 moves the blade mechanism 100 away from the support base 30 after cutting the test specimen 7, the contact portion fixed in a predetermined position contacts the remaining test substrate 8, preventing the remaining test substrate 8 from rising above the contact position of the remaining test substrate 8, even if the remaining test substrate 8 is rising together with the cylindrical blade 1. This ensures that the remaining test substrate 8 does not rise above the contact position of the remaining test substrate 8, and the movement of the blade mechanism 100 away from the support base 30 by the press mechanism 20 ensures that the remaining test substrate 8 is reliably separated from the cylindrical blade 1. One or more contact portions may be provided, and the number and arrangement of the contact portions are appropriately determined according to the shape, thickness, material, and degree of engagement of the remaining test substrate 8. Multiple contact points simultaneously contact the remaining test substrate 8, allowing for smooth separation from the cylindrical blade 1 while maintaining a horizontal position without tilting the remaining test substrate 8. This is particularly effective and preferable when the shape of the test piece 7 is elongated. Multiple contact points can be positioned outside the short blade 2B and / or the long blade 2A, or outside the chucking area 7Y and / or the test area 7X. Multiple contact points can be spaced apart in the longitudinal or transverse directions, and can be positioned on both sides of the remaining test substrate 8 with respect to the hole in the test piece 7. Furthermore, multiple contact points can be positioned along one side of the hole in the test piece 7. In particular, when the shape of the test piece is elongated, arranging multiple contact points spaced apart in the longitudinal directions allows for efficient separation of the remaining test substrate 8 from the cylindrical blade with a small number of contact points. For example, two or more contact points can be positioned to contact the outside of the short blades 2B on both sides, four or more contact points can be positioned to contact the four corners of the remaining test substrate 8, and two or more contact points can be positioned to contact both sides of the hole for the test piece 7 in the longitudinal center of the remaining test substrate 8. The contact points are preferably positioned above the remaining test substrate 8 so as not to interfere with setting the test substrate 6 onto the support stand 30. The contact points can be fixed so as to be movable, and for example, the contact points can be moved, set, and fixed to a predetermined position after the test substrate 6 has been set on the support stand 30.

[0046] The above-described blade mechanism 100 and test piece cutting device 200, for example, in the following process, the cylindrical blade 1 cuts the test piece 7 from the test substrate 6, while the outer blade 10 cuts the remaining test substrate 8 other than the test piece 7. (1) The cutting mechanism 100 is attached to the press mechanism 20. The cylinder 21 is used to position the cutting mechanism 100 in the raised position, and then the connecting part 3 on the cutting mechanism 100 side is fixed to the connecting part 22 on the press mechanism 20 side. (2) Place the test substrate 6 on the support stand 30. (3) The press mechanism 20 lowers the blade mechanism 100, and the cutting edge 1a and the outer cutting edge 10a move vertically downward, so that the cylindrical blade 1 and the outer blade 10 press-cut the test substrate 6. (4) After cutting, the press mechanism 20 raises the blade mechanism 100 to the raised position, making it easy to separate the remaining test substrate 8 from the cylindrical blade 1, and the cut test piece 7 is recovered. [Industrial applicability]

[0047] This disclosure is suitable for use as a cutting tool mechanism and test piece cutting device that have a simple structure and facilitate the separation of the remaining test substrate from the cylindrical blade after cutting. [Explanation of Symbols]

[0048] 100...Blade mechanism 200…(Test specimen) cutting device 1…Cylindrical blade 1a...Blade tip 1b…Corner 2A...Long blade 2B... Short blade 2X…Test area cutting blade 2Y...Chucking area, cutting blade 3...Connection part 4…First Plate 6…Test substrate 7…Test specimen 7X…Examination Area 7Y...Chucking area 8, 8A, 8B…Residual test substrates 10, 10A1~10A2, 10B1~10B2, 10C1~10C2, 10D1~10D6, 10E1~10E8, 10X1~10X4, 10X41~10X42, 10Y1~10Y2, 10Z1~10Z3, 10R, 10W1~10W4… outer edge blades 10a…outer edge 11…Outer extension 12…Straight line extension 13…Outer connecting part 20…Pressure Agency 21…シリンダ 22…Connecting Section 30…Receive the platform 31…cut surface 32...Buffering シート

Claims

1. A cutting mechanism that cuts a test substrate set on a support base by being pressed down by a press mechanism, A cylindrical blade for cutting the test substrate into a test piece of a predetermined shape, A cutting mechanism comprising an outer cutting blade connected to the cylindrical cutting blade for cutting the outer surface of the test specimen.

2. A cutting tool mechanism according to claim 1, The cylindrical blade has a cylindrical cutting edge at its lower end for cutting the test substrate into a test piece. The aforementioned outer blade has an outer cutting edge at its lower end for cutting the test substrate, A cutting mechanism in which the outer cutting edge of the outer cutting tool is substantially the same height as the cylindrical cutting edge of the cylindrical cutting tool.

3. A cutting tool mechanism according to claim 1, A cutting mechanism in which the outer cutting edge extends in a straight line.

4. A cutting tool mechanism according to claim 1, The outer blade is a blade mechanism that extends outward from the cylindrical blade by 1 cm or more.

5. A cutting tool mechanism according to claim 1, A cutting mechanism having two or more of the aforementioned outer cutting blades.

6. A cutting tool mechanism according to claim 1, A cutting mechanism comprising two or more outer cutting tools arranged in a parallel position.

7. A cutting tool mechanism according to claim 1, A cutting mechanism in which the outer cutting tool is connected perpendicularly to the cylindrical cutting tool.

8. A cutting tool mechanism according to claim 1, The aforementioned cylindrical blade, A pair of long blades for cutting both sides of the long edge of the test specimen, It has a pair of short blades connected to both ends of the long blade to cut off both edges on the short side of the test piece, A cutting mechanism in which the outer cutting edge is connected to the short cutting edge.

9. A cutting tool mechanism according to claim 1, The aforementioned cylindrical blade, A test area cutting blade for cutting the test area of ​​the test specimen, It has a chucking area cutting blade for cutting the chucking area of ​​the test piece, A cutting mechanism comprising the outer cutting blade connected to the chucking area cutting blade.

10. A cutting tool mechanism according to claim 1, The aforementioned cylindrical blade, A test area cutting blade for cutting the test area of ​​the test specimen, It has a chucking area cutting blade for cutting the chucking area of ​​the test piece, A cutting mechanism comprising the outer cutting blade connected to the test area cutting blade.

11. A cutting tool mechanism according to claim 1, A cutting mechanism in which the outer cutting tool divides the remaining portion of the test substrate other than the test piece into two or more parts.

12. A cutting tool mechanism according to any one of claims 1 to 11, The length of the outer cutting edge (L2) of the outer cutting tool is A cutting mechanism whose width (Z) is greater than or equal to the width of the remaining test substrate other than the test piece to be cut.

13. A support stand for placing the test substrate, A cutting mechanism for cutting the test substrate placed on the aforementioned support stand, A test piece cutting device comprising a press mechanism that presses against the aforementioned blade mechanism, The aforementioned cutting mechanism, A cylindrical blade for cutting the test substrate into a test piece of a predetermined shape, The cylindrical blade is connected to an outer blade for cutting test substrates other than the test piece, A test piece cutting device wherein the cylindrical blade and the outer blade cut the test substrate by pressing the blade mechanism with the press mechanism.

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