Thomson blade

Abstract

This design allows for the creation of uncut sections in the middle of a punch-out cut section, which is formed by a reference section where the tip line of the cutting edge is continuous, by locally creating sections where the tip line is missing. [Solution] In a Thomson blade in which a sharp-angled cutting edge Ta is formed on one side edge of a strip-shaped blade plate T, the cutting edge Ta has a reference portion 3 in which the tip line S of the cutting edge Ta is continuous, and an offset portion 4 that is offset in the blade thickness direction F from the reference portion 3 at an intermediate position of the reference portion 3, and a tip line missing portion 5 is formed between the end of the offset portion 4 and the reference portion 3.

Description

Technical Field

[0001] The present invention relates to a Thomson time used for punching out a main part of a required shape from a sheet-like material. On the blade

Background Art

[0002] The Thomson blade has an unhardened cutting edge, is bent to match the design of the punching line, and is fitted into a veneer board to form a Thomson die.

[0003] The processing of the Thomson blade is to bend the body (shank part) and the cutting edge of a strip-shaped blade plate simultaneously with a bending machine, and as disclosed in Patent Document 1, there is a technique of forming small undulating fine wave blades only on the cutting edge, and further forming large undulating large wave blades on the fine wave blades.

[0004] The sheet punching blade of this Patent Document 1 has fine wave blades and large wave blades formed only on the cutting edge at the tip of the blade plate, and can punch a sheet with a regular or irregular curved cutting line (punching line).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The punching blades of the technology of Patent Document 1 and other conventional technologies have a continuous tip line from one end to the other end whether the cutting edge of the Thomson blade is straight or curved, and are the best blades for completely die-cutting a main part of a sheet-like material according to the design from the surrounding residue part.

[0007] ​However, recently there has been a demand for cutting lines formed on sheet-like materials that do not allow for complete separation of the essential parts, but rather leave very localized uncut areas within the cut lines, leaving the essential parts in an incompletely separated state, or leaving multiple localized uncut areas within a certain range, so that when the essential parts are separated, the uncut areas break in a way that resembles a natural tear. The conventional technology described above is finding it difficult to meet such demands.

[0008] The present invention aims to provide a Thomson blade and a Thomson blade processing apparatus that can solve the problems of the conventional technology.

[0009] The present invention aims to provide a Thomson blade that allows for the formation of localized uncut sections along the cutting line by forming an offset section and a missing tip section at an intermediate position in the reference section where the tip line of the cutting edge is continuous.

[0010] The present invention aims to provide a Thomson blade that can be made to spontaneously break by forming multiple uncut sections locally along the cut line, by forming multiple deviation sections and missing tip sections at intermediate positions in the reference section where the tip line of the cutting edge is continuous. do. [Means for solving the problem]

[0011] Honpatsu A specific means for solving the problems in a Thomson blade is a Thomson blade in which a sharp-angled cutting edge Ta is formed on one side edge of a strip-shaped cutting plate T, wherein the cutting edge Ta has a reference portion 3 in which the tip line S of the cutting edge Ta is continuous, and offset portions 4 are formed at multiple intermediate positions of the reference portion 3 that are offset from the reference portion 3 in the blade thickness direction F, and a tip line missing portion 5 is formed between the end of the offset portion 4 and the reference portion 3, and the multiple offset portions 4 are offset in one direction in the blade thickness direction F. and , those that are deviated in a direction other than the blade thickness direction F. Toga mixed doing ru.

[0012] This invention in Thomson cutting machine PlaceA Thomson cutting machine is provided, comprising a cutting plate support member 6 that supports the back and one side of a strip-shaped cutting plate T, a pressing member 7 that advances relative to the cutting plate support member 6 and is pressed against the cutting plate T, and a pushing mechanism 8 that moves the pressing member 7 forward and backward relative to the cutting plate support member 6, wherein the cutting plate support member 6 has a base surface 9 that supports the back of the cutting plate T and a receiving surface 10 that faces one side of the cutting plate T and supports the cutting plate T, and the receiving surface 10 has a relief recess 11 that faces the cutting edge Ta of the cutting plate T, and the pressing member 7 is provided with a pressing projection 12 on the upper front surface that faces the relief recess 11 and pushes and bends the cutting edge Ta of the cutting plate T in the blade thickness direction F to form a tip line missing portion 5 within the relief recess 11. [Effects of the Invention]

[0013] According to the Thomson blade of the present invention, when a sheet-like material is punched out, a locally uncut portion can be formed in the middle of the cut line, which is formed by a reference portion where the tip line of the blade edge is continuous, by a portion where the tip line is missing.

[0014] According to the Thomson blade of the present invention, when a sheet-like material is punched out, multiple uncut sections can be formed in the middle of the cut line, which is formed by a reference section in which the tip line of the blade edge is continuous. These sections are offset from the tip line in one direction, one direction, or both directions in the blade thickness direction F, and irregular natural fracture lines can be formed when the key part is removed by hand.

[0015] This invention in According to the Thomson cutting machine, by simply pressing a pressing projection against the cutting edge of the cutting plate and bending it into the relief recess, an offset portion and a tip line missing portion can be easily formed on the cutting edge. [Brief explanation of the drawing]

[0016] [Figure 1] A perspective view showing an embodiment of the Thomson blade of the present invention. [Figure 2] This is a plan view of the main section. [Figure 3] This is a cross-sectional view along line XX in Figure 2. [Figure 4] This is a magnified plan view of a Thomson blade. [Figure 5] It is a plan view showing a cut line for sheet punching. [Figure 6] It is a plan view of a Thomson blade processing device. [Figure 7] It is a side view of a Thomson blade processing device. [Figure 8] It is a plan view showing a modification example of a tip line missing part and a pressing protrusion.

Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0018] In FIGS. 1 to 5, a Thomson blade 1 used for die-cutting sheet-like materials such as sheet materials, cardboard, and corrugated cardboard is illustrated. This Thomson blade 1 has a blade tip Ta with a sharp tip formed on one side edge of a strip-shaped blade plate T. The blade plate T is bent or curved at a plurality of locations in the longitudinal direction and is fitted into a veneer plate to constitute a Thomson die.

[0019] FIG. 5 shows punching the sheet-like material 15 along the cut line C of a square design, clearly separating the central main part 15a and the residual part 15b around it, and forming two types of uncut parts U, namely, a single uncut part U1 on the upper and lower horizontal punching lines and an intermittent uncut part U2 on the left and right side horizontal punching lines.

[0020] FIG. 4 is an enlarged view of the shape of the Thomson blade 1 forming the two types of uncut parts U1 and U2 in FIG. 5 as seen from the blade tip. A single tip line missing part 5 forming a single uncut part U1 is formed in the upper horizontal part, and a plurality of tip line missing parts 5 forming an intermittent uncut part U2 are formed in the right side part.

[0021] FIGS. 1 to 3 illustrate one shape and processing method of the single tip line missing part 5 or the plurality of tip line missing parts 5 of the Thomson blade 1.

[0022] On the sharp-angled cutting edge Ta of one side edge of the strip-shaped cutting plate T of the Thomson blade 1, a reference portion 3 is formed where the tip line S of the cutting edge Ta is continuous, and an offset portion 4 is formed at an intermediate position of the reference portion 3, offset in the blade thickness direction F from the reference portion 3. A tip line missing portion 5 is formed between the end of the offset portion 4 and the reference portion 3. Since there are two offset portions 4 protruding, the tip line missing portion 5 is located between the two offset portions 4.

[0023] When the pressing member 7 is pressed against the cutting edge Ta of the strip-shaped cutting plate T of the Thomson blade 1, with its sides supported by the receiving surface 10 of the cutting plate support member 6 shown by the dashed line in Figures 2 and 3, the cutting edge Ta is bent into the relief recess 11 within the receiving surface 10 of the cutting plate support member 6, thereby forming a locally displaced portion 4 at the cutting edge Ta. By breaking through the maximum bent portion of this displaced portion 4 with the pressing member 7, a tip line missing portion 5 is formed in the middle of the reference portion 3.

[0024] The deviation portion 4 is a bent or curved portion from the reference portion 3, and the tip line S remains in that portion as well, allowing a cut line C to be formed on the sheet material 15. However, the tip line S of the deviation portion 4 may become lower as it approaches the tip line missing portion 5.

[0025] When forming multiple single tip line missing sections 5 along the entire length of the Thomson blade 1, the strip-shaped blade plate T is moved relative to the receiving surface 10 of the blade plate support material 6, and the position in which the pressing member 7 is pressed is changed.

[0026] In Figures 1-3, the multiple tip line missing sections 5 are formed at one or more locations along the entire length of the Thomson blade 1. The strip-shaped blade plate T is placed against the receiving surface 10 of the blade plate support material 6, and after the first pressing of the pressing member 7, the strip-shaped blade plate T is shifted in the longitudinal direction and pressed a second and third time, thereby forming the displacement section 4 and the tip line missing sections 5 by the pressing member 7.

[0027] During these multiple processing steps, if the extension distance of the pressing member 7 is made approximately uniform, a displaced portion 4 with approximately uniform protrusion dimensions is formed, and the size and shape of this displaced portion 4 and the tip line missing portion 5 become approximately the same. Furthermore, if the extension distance of the pressing member 7 is varied, the size and shape of the displaced portion 4 and the tip line missing portion 5 will change accordingly. In addition, the size and shape of the displaced portion 4 and the tip line missing portion 5 can also be changed by changing the tip shape of the pressing member 7.

[0028] Furthermore, when processing multiple times, if the side surface of the strip-shaped blade plate T that contacts the receiving surface 10 of the blade plate support material 6 is reversed, two types of offset portion 4 and tip line missing portion 5 formed on the cutting edge Ta can be formed: one that protrudes from one side and one that protrudes from the opposite side.

[0029] The multiple missing tip lines 5 form multiple uncut sections U in the sheet material 15 punched out by the Thomson blade 1, which are offset from the cut line C made by the tip line S of the blade edge Ta. When the residue 15b is removed manually to remove the essential part 15a, the uncut sections U will exhibit irregular natural fracture lines.

[0030] Figure 8 shows a modified example of one shape and processing method for a single tip line missing portion 5 or multiple tip line missing portions 5 of the Thomson blade 1.

[0031] At the sharp-angled cutting edge Ta of one side edge of the strip-shaped cutting plate T of the Thomson blade 1, a reference portion 3 is formed where the tip line S of the cutting edge Ta is continuous, and a single offset portion 4 is formed at an intermediate position of the reference portion 3, offset in the blade thickness direction F from the reference portion 3, and a tip line missing portion 5 is formed between the free end of this single offset portion 4 and the reference portion 3.

[0032] The pressing member 7 in Figure 8 has a tip shape formed as a single-sided blade 7a. By pressing it against the cutting edge Ta of the strip-shaped blade plate T, whose side is supported by the receiving surface 10 of the blade plate support member 6, it advances into the relief recess 11 within the receiving surface 10 of the blade plate support member 6, thereby making a cut in the cutting edge Ta. The inclined surface of the single-sided blade 7a pushes and bends it to form a displaced portion 4, and a tip line missing portion 5 is formed between the maximum bent portion of this displaced portion 4 and the remaining cutting edge Ta.

[0033] Figures 6 and 7 show the overall structure of the Thomson cutting machine.

[0034] This Thomson cutting machine 20 includes a blade plate support member 6 that holds the back and one side of the strip-shaped blade plate T, a pressing member 7 that advances relative to the blade plate support member 6 and is pressed against the blade plate T, and a pushing mechanism 8 that moves the pressing member 7 forward and backward relative to the blade plate support member 6.

[0035] The machine base 21 of the die cutting machine 20 is provided with left and right guide rails 22, and a support base 23 is attached to one side of these left and right guide rails 22, and a blade plate support material 6 is fitted into this support base 23 so as to be removable upward. The position of the support base 23 relative to the machine base 21 can be adjusted using a position adjustment device 24.

[0036] The blade plate support member 6 is formed by removing a triangular section from the top of a rectangular prism-shaped member at diagonal positions. The bottom surface of the triangular space is used as a base surface 9 that supports the back of the blade plate T, and the diagonally opposite surface is formed as a support surface 10 that faces one side of the blade plate T and supports the blade plate T.

[0037] The receiving surface 10 has a relief recess 11 facing the cutting edge Ta of the blade plate T, allowing the pressing member 7 to enter, and also allowing the displaced portion 4 of the cutting edge Ta, which is pressed and bent by the pressing member 7, to enter.

[0038] A pushing body 26 is mounted on the other side of the left and right guide rails 22, and a pressing member 7 is mounted on this pushing body 26. The lever 27 of the pushing mechanism 8 is pivotally supported on the device base 21, and the lever 27 and the pushing body 26 are connected by a pushing rod 28, allowing the pressing member 7 to move forward and backward toward the blade plate support member 6 by the swinging of the lever 27.

[0039] The pressing member 7 has a pressing projection 12 on its upper front surface that faces the relief recess 11 and presses and bends the cutting edge Ta of the blade plate T in the blade thickness direction F to form an offset portion 4 and a tip line missing portion 5 within the relief recess 11.

[0040] This pressing member 7 is attached to the pressing body 26 via shims, spacers, etc., so that its height can be adjusted, and it is also replaceable, allowing it to accommodate multiple types of Thomson blades 1 with different width dimensions. Furthermore, the blade plate support member 6 is designed so that the vertical dimension of the relief recess 11 is extended, allowing it to accommodate multiple types of Thomson blades 1 with different width dimensions. In the aforementioned embodiment of the Thomson blade, a Thomson blade has a sharp-angled cutting edge Ta formed on one side edge of a strip-shaped blade plate T. The cutting edge Ta has a reference portion 3 on which the tip line S of the cutting edge Ta is continuous, and an offset portion 4 that is offset in the blade thickness direction F from the reference portion 3 at an intermediate position of the reference portion 3, and a tip line missing portion 5 is formed between the end of the offset portion 4 and the reference portion 3.

[0041] This configuration allows for the formation of uncut sections U by intermittently occurring tip line missing sections 5 along the punching cut line C, which is formed by a reference section 3 through which the tip line S of the cutting edge Ta is continuous.

[0042] Furthermore, in the embodiment of the Thomson blade, a Thomson blade has a sharp-angled cutting edge Ta formed on one side edge of a strip-shaped blade plate T, and the cutting edge Ta has a reference portion 3 on which the tip line S of the cutting edge Ta is continuous, and offset portions 4 that are offset from the reference portion 3 in the blade thickness direction F at multiple intermediate positions of the reference portion 3, and a tip line missing portion 5 is formed between the end of the offset portion 4 and the reference portion 3, and the multiple offset portions 4 are offset in one direction of the blade thickness direction F, offset in the other direction of the blade thickness direction F, or a mixture of these directions.

[0043] This configuration allows for the formation of multiple uncut sections U that are offset from the tip line S in one direction, the other direction, or both directions in the blade thickness direction F by multiple tip line missing sections 5 in the middle of the punching cut line C formed by the reference section 3 through which the tip line S of the cutting edge Ta is continuous, thus enabling the formation of irregular natural break lines when the key part is removed manually.

[0044] Furthermore, in the embodiment of the Thomson blade, the multiple displacement portions 4 are those with substantially uniform displacement in the blade thickness direction F, those with varying displacements in the blade thickness direction F, or a mixture of both.

[0045] This configuration allows for the formation of multiple uncut sections with identical or different displacements, and enables the creation of more irregular spontaneous fracture lines when the key parts are manually removed.

[0046] Furthermore, in the embodiment of the Thomson cutting apparatus, the Thomson cutting apparatus includes a cutting plate support member 6 that supports the back and one side of a strip-shaped cutting plate T, a pressing member 7 that advances relative to the cutting plate support member 6 and is pressed against the cutting plate T, and a pushing mechanism 8 that moves the pressing member 7 forward and backward relative to the cutting plate support member 6, wherein the cutting plate support member 6 has a base surface 9 that supports the back of the cutting plate T and a receiving surface 10 that faces one side of the cutting plate T and supports the cutting plate T, and the receiving surface 10 has a relief recess 11 that faces the cutting edge Ta of the cutting plate T, and the pressing member 7 is provided with a pressing projection 12 on the upper front surface that faces the relief recess 11 and pushes and bends the cutting edge Ta of the cutting plate T in the blade thickness direction F to form a tip line missing portion 5 within the relief recess 11.

[0047] With this configuration, the displacement portion 4 and the tip line missing portion 5 can be easily formed on the cutting edge Ta of the blade plate T simply by pressing the pressing projection 12 against it and bending it into the relief recess 11.

[0048] It should be noted that the present invention is not limited to the embodiments described above, and the shape, configuration, and combination of the components can also be changed.

[0049] For example, the cutting edge Ta on one side edge of the strip-shaped cutting plate T is shown as a center cutting edge (double-sided cutting edge), but it may also be a two-stage cutting edge, a single cutting edge, or other special punching blades. [Explanation of Symbols]

[0050] 1 Thomson blade 3 Reference part 4. Displacement 5. Missing part of the tip 6 Blade plate receiving material 7 Pressing member 7a Single-sided blade 8 Pushing mechanism 9 Base surface 10 Receiving surface 11 Recessed recess 12 Pressing projection 15. Sheet material 15a Main part 15b Residue section 20 Thomson cutting machine 21 Equipment stand 22 Guide rails 23 Support stand 24 Position adjustment tool 26 Pushing body 27 Lever 28 Push rod C cut line F Blade thickness direction S tip line T blade plate Ta blade tip U Uncut Section U1 Solo Uncut Section U2 Intermittent Uncut Section

Claims

1. In a Thomson blade in which a sharp-angled cutting edge (Ta) is formed on one side edge of a strip-shaped cutting plate (T), The cutting edge (Ta) has a reference portion (3) along which the tip line (S) of the cutting edge (Ta) is continuous, and offset portions (4) that are offset from the reference portion (3) in the blade thickness direction (F) at multiple intermediate positions in the reference portion (3), and a tip line missing portion (5) is formed between the end of the offset portion (4) and the reference portion (3). The Thomson blade is characterized in that the multiple displaced portions (4) and tip line missing portions (5) are a mixture of those displaced in one direction in the blade thickness direction (F) and those displaced in the other direction in the blade thickness direction (F).

2. The Thomson blade according to Claim 1, characterized in that the plurality of displaced portions (4) have a mixture of displaced portions of different magnitudes in the blade thickness direction (F).

3. The Thomson blade according to claim 1 or 2, characterized in that the plurality of displaced portions (4) and tip line missing portions (5) are a mixture of different sizes and shapes.

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