Punching device

Abstract

To provide a punching device that can accurately cut out a pattern surface from a printed matter.SOLUTION: A punching device 1 comprises a paper bundle setting part 7, a movable part 5, a pushing-up part 2 and a cutting part 10. The pushing-up part 2 moves the movable part 5 and the paper bundle setting part 7 in a vertical direction. The cutting part 10 is arranged above, in the vertical direction, the paper bundle setting part 7 to oppose to a paper bundle set on the paper bundle setting part 7. An incision is formed in advance between a frame of a paper surrounding the pattern surface of the printed matter and the pattern surface, and the pattern surface is connected to the frame of the paper through a joint. The cutting part 10 has a cutting blade for pressing the frame of the paper of the printed matter. The paper bundle setting part 7 has a support part 7b for supporting the pattern surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a punching device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is a technique for cutting out only the patterned surface from a stack of sheets of printed matter on which a pattern has been formed, such as that described in Patent Document 1, for example.

[0003] Patent Document 1 describes a technology related to a cutting machine that includes at least a clamp that presses the material to be cut to secure it during cutting, a cutting blade that cuts the material to a predetermined size, and a support table for placing the material. The clamp also includes a partial pressure reduction device that uniformly presses the convex portions of the material to be cut, which are used for binding or securing the spine, and the convex portions of the material other than the convex portions. The partial pressure reduction device also has a function that allows it to be installed on the clamp. The partial pressure reduction device also includes at least an upper / middle layer that includes a pressure reduction section for absorbing contact pressure with the convex portions of the material to be cut, and a bottom layer that comes into contact with the material to be cut and has a highly smooth surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2022-157939 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the technology described in Patent Document 1, when cutting a stack of sheets made of tacky paper with low friction between the sheets, it was difficult to securely hold the stack of sheets with a clamp. As a result, the technology described in Patent Document 1 had a problem in that when cutting the stack of sheets with a cutting blade, the printed matter shifted, making it impossible to accurately cut out the patterned surface from the printed matter.

[0006] SUMMARY OF THE INVENTION In consideration of the above problems, an object of the present invention is to provide a punching device that can accurately cut out a pattern surface from a printed material. [Means for solving the problem]

[0007] In order to solve the above problems and achieve the object of the present invention, the punching device comprises a paper stack setting section in which a paper stack consisting of multiple printed materials each having a patterned surface and a paper frame surrounding the patterned surface is set, a movable section that supports the paper stack setting section, a push-up section that moves the movable section and the paper stack setting section in an up-and-down direction, and a cutting section that is arranged above the paper stack setting section in an up-and-down direction and faces the paper stack set in the paper stack setting section, wherein the cutting section has a cutting blade that presses the paper frame of the printed materials, and the paper stack setting section has a support section that supports the patterned surface.

[0008] The punching device of the present invention is also characterized in that the cutting blade has a blade that is recessed in an arc shape. [Effects of the Invention]

[0009] According to the punching device having the above configuration, the pattern surface can be accurately cut out from the printed matter. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing a punching device according to an embodiment of the present invention; [Figure 2] 1 is a perspective view showing a cutting unit of a punching device according to an embodiment of the present invention; [Figure 3] 1 is a plan view showing a cutting unit of a punching device according to an embodiment of the present invention; [Figure 4] 1 is a perspective view showing a long cutting blade of a cutting unit of a punching device according to an embodiment of the present invention; [Figure 5] 1 is a perspective view showing a short cutting blade of a cutting unit of a punching device according to an embodiment of the present invention; [Figure 6] FIG. 2 is a plan view of the short cutting blade as seen from the bottom side. [Figure 7] 6 is a cross-sectional view A of the short cutting blade shown in FIG. 5. [Figure 8] 6 is a cross-sectional view B of the short cutting blade shown in FIG. 5. [Figure 9] FIG. [Figure 10] 1 is a perspective view showing a base of a punching device according to an embodiment of the present invention; [Figure 11] 10A to 10C are diagrams illustrating the operation of the punching device according to the embodiment of the present invention. [Figure 12] 10A to 10C are diagrams illustrating the operation of the punching device according to the embodiment of the present invention. [Figure 13] 10A to 10C are diagrams illustrating the operation of the punching device according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a punching device according to an embodiment will be described with reference to Figures 1 to 13. Note that common members in each figure are given the same reference numerals.

[0012] 1. Example of implementation First, the configuration of a punching device according to this embodiment (hereinafter referred to as "this example") will be described with reference to Figures 1 and 2. Figure 1 is a cross-sectional view showing the punching device of this example.

[0013] The device of this example shown in Figure 1 is a device that punches out only the patterned surface from a printed material on which a pattern has been formed. As shown in Figure 1, the punching device 1 has a push-up unit 2, a lifting platform 3, a pressing unit 4, a movable unit 5, a guide rail 6, a paper stack setting unit 7, and a punching unit 8. The push-up unit 2 is configured, for example, by a foot lifter having a foot pedal 2a that serves as an operating unit. A lifting platform 3 is provided above the push-up unit 2 in the vertical direction. The push-up unit 2 moves the lifting platform 3 up and down by operating the foot pedal 2a.

[0014] The push-up unit 2 is not limited to a foot lifter, and various other devices can be used as long as they can raise and lower the movable unit 5 and paper stack setting unit 7 (described later) in the vertical direction.

[0015] Further, a guide rail 6 is provided on the push-up section 2. The guide rail 6 extends in a horizontal direction perpendicular to the up-down direction, and supports a movable section 5 (described later) in a slidable manner.

[0016] A pressing unit 4 is installed on the lifting platform 3. The pressing unit 4 moves up and down together with the lifting platform 3 by the push-up unit 2. Note that, although the example in which the pressing unit 4 is installed on the lifting platform 3 has been described in this example, the present invention is not limited to this, and the pressing unit 4 may not be provided.

[0017] A movable part 5 is disposed above the pressing part 4 in the vertical direction. The movable part 5 is supported by a guide rail 6 so as to be movable in the horizontal direction. Furthermore, by moving along the guide rail 6, the movable part 5 moves between a position away from the upper part of the pressing part 4 (see FIG. 11) and a position facing the upper part of the pressing part 4 (see FIG. 1).

[0018] The movable part 5 is provided with a plurality of springs 11, which are an example of a pressure suppressing part. The lower ends of the springs 11 are fixed to the movable part 5. The springs 11 are erected facing upward in the vertical direction from the movable part 5. The paper stack setting part 7 is disposed at the upper ends of the springs 11. Therefore, the springs 11 are interposed between the movable part 5 and the paper stack setting part 7.

[0019] The paper stack setting unit 7 moves horizontally along the guide rail 6 together with the movable unit 5. The paper stack setting unit 7 and the movable unit 5 move up and down together with the lifting platform 3 and the pressing unit 4 by the push-up unit 2. A paper stack 100, which will be described later, is set in the paper stack setting unit 7. The detailed configuration of the paper stack setting unit 7 will be described later.

[0020] Although the example in which the spring 11 is used as the pressure suppression portion has been described, the present invention is not limited to this. The pressure suppression portion may be made of any material as long as it has elasticity, and for example, rubber or any other elastic material may be used.

[0021] Furthermore, a punching unit 8 is disposed above the paper stack setting unit 7 in the vertical direction. The punching unit 8 is supported by a plurality of support pillars 9. The support pillars 9 stand upright from the upper end of the push-up unit 2 in the vertical direction. The punching unit 8 has a cutting unit 10. The cutting unit 10 is disposed opposite the paper stack setting unit 7 in the vertical direction.

[0022] Next, the configuration of the cutting unit 10 will be described with reference to Figures 2 to 8. Figure 2 is a perspective view showing the cutting unit 10, and Figure 3 is a plan view showing the cutting unit 10.

[0023] 2 and 3, the cutting unit 10 has a plurality of long cutting blades 15 and a plurality of short cutting blades 16. The cutting unit 10 is formed in a lattice shape by the plurality of long cutting blades 15 and the plurality of short cutting blades 16. The openings of the lattice formed by the cutting unit 10 are formed in a rectangular shape to match the shape of the pattern surface 102 to be punched out from the paper stack 100.

[0024] FIG. 4 is a perspective view showing the long cutting blade 15. As shown in FIG. 4, the long cutting blade 15 is made up of a plurality of (three in this example) short cutting blades 16. That is, the long cutting blade 15 is formed by arranging a plurality of short cutting blades 16 along the longitudinal direction. Therefore, in this embodiment, the length of the short cutting blades 16 constituting the long cutting blade 15 is the same as the length of a single short cutting blade 16. However, this is not limited to this, and the lengths do not have to be different.

[0025] Fig. 5 is a perspective view showing the short cutting blade 16. Fig. 6 is a plan view of the short cutting blade 16 seen from the bottom side. Fig. 7 is a cross-sectional view A of the short cutting blade 16 shown in Fig. 5, and Fig. 8 is a cross-sectional view B of the short cutting blade 16 shown in Fig. 5.

[0026] As shown in Fig. 5, the short cutting blade 16 is formed in a substantially rectangular shape. As shown in Figs. 5 and 6, a blade 22 is formed on the lower end of the short cutting blade 16 in the vertical direction, i.e., on the surface that comes into contact with the paper stack 100. The lower end of the short cutting blade 16 is formed in a substantially arc shape. As shown in Figs. 6 and 8, a pressing surface 23 is formed on both longitudinal ends of the lower end of the short cutting blade 16. The pressing surface 23 is formed in a flat shape.

[0027] The short cutting blade 16 is formed to be concave in an arc shape upward in the vertical direction from the pressing surfaces 23 formed at both longitudinal ends toward the longitudinal intermediate portion 21. Therefore, the pressing surfaces 23 protrude downward in the vertical direction further than the longitudinal intermediate portion 21.

[0028] 6 and 7, the short cutting blade 16 is formed with a blade 22. The blade 22 is formed between two pressing surfaces 23. The blade 22 is formed on both sides of the short cutting blade 16 in the short direction. That is, the short cutting blade 16 is configured as a double-edged blade with the blade 22 formed on both sides. The blade 22 is formed in a substantially arc shape along the longitudinal direction of the short cutting blade 16. The distance between the two blades 22 narrows toward the intermediate portion 21 in the longitudinal direction of the short cutting blade 16. That is, the blade 22 at the intermediate portion 21 in the longitudinal direction of the short cutting blade 16 is formed to be sharpest.

[0029] FIG. 9 is a perspective view showing a stack of paper sheets 100. The stack of paper sheets 100 is formed by stacking multiple printed matter 101. The printed matter 101 has a rectangular patterned surface 102 and a paper frame 104 surrounding the patterned surface 102. A notch 103 is formed in advance between the paper frame 104 and the patterned surface 102 of the printed matter 101. The patterned surface 102 and the paper frame 104 are connected by a seam 110. A plurality of seams 110 are formed on the outer periphery of the patterned surface 102. In this example, the seams 110 are formed in the middle of the long and short sides of the patterned surface 102.

[0030] Furthermore, when the printed material 101 and the cutting unit 10 face each other in the vertical direction, the middle portion 21 , which is the sharpest part of the short cutting blade 16 , approaches the joint 110 in the paper frame 104 and comes into contact with the paper frame 104 .

[0031] Next, the paper stack setting unit 7 on which the above-mentioned paper stack 100 is set will be described with reference to Figures 1 and 10. Figure 10 is a perspective view showing the base 7a of the paper stack setting unit 7.

[0032] 1, the paper stack setting unit 7 has a base 7a, a support portion 7b, and a side wall portion 7c. The base 7a and the support portion 7b are made of, for example, felt. However, only the support portion 7b may be made of felt, and the base 7a may be made of various other materials.

[0033] The side wall portion 7c is disposed so as to surround the outer periphery of the base 7a. The side wall portion 7c is formed in a rectangular shape to match the outer shape of the paper-sheet stack 100. The side wall portion 7c is also formed so as to be movable in the horizontal direction in order to eliminate horizontal misalignment of the paper-sheet stack 100 set on the base 7a.

[0034] As shown in FIG. 10, the base 7a is formed in a substantially rectangular parallelepiped shape to match the shape of the paper stack 100. A plurality of support portions 7b are formed on the top surface of the base 7a in the vertical direction. The support portions 7b are arranged in positions corresponding to the positions where the pattern surface 102 formed on the printed matter 101 is provided. The support portions 7b protrude upward in the vertical direction from the top surface of the base 7a. The support portions 7b are also formed in a substantially rectangular parallelepiped shape.

[0035] When the paper-sheet stack 100 is set on the base 7a, the patterned surface 102 of the paper-sheet stack 100 is placed on the support portion 7b. The upper surface of the support portion 7b on which the patterned surface 102 is placed is formed in a rectangular shape to match the shape of the patterned surface 102. The protruding height of the support portion 7b from the base 7a is set to be longer than the thickness of the paper-sheet stack 100.

[0036] 2. Example of punching device operation Next, an example of the operation of the punching device 1 will be described with reference to Figures 11 to 13. Figures 11 to 13 are diagrams showing an example of the operation of the punching device 1.

[0037] First, as shown in FIG. 11, the movable section 5 is moved along the guide rail 6 to move the paper stack setting section 7 to a position away from below the punching section 8. Then, the worker sets the paper stack 100 shown in FIG. 9 in the paper stack setting section 7. At this time, the outer periphery of the paper stack 100 is surrounded by the side wall section 7c of the paper stack setting section 7. This prevents the paper stack 100 from shifting horizontally. At this time, the patterned surface 102 of the paper stack 100 is placed on the upper surface of the support section 7b. In addition, the paper frame 104 of the lowest printed matter 101 in the paper stack 100 is positioned so as to be floating above the base 7a.

[0038] Next, the movable section 5 is moved along the guide rails 6 to move the paper stack setting section 7 to below the punching section 8. At this time, the paper stack 100 faces the cutting section 10 provided in the punching section 8 in the vertical direction.

[0039] Next, as shown in Figure 12, the worker operates the foot pedal 2a of the push-up unit 2 to raise the lifting platform 3 upward in the vertical direction. As a result, the pressing unit 4, the movable unit 5, and the paper stack setting unit 7 rise upward in the vertical direction together with the lifting platform 3. Then, the paper stack setting unit 7 is inserted into the punching unit 8.

[0040] When the paper stack setting unit 7 is inserted into the punching unit 8, the cutting unit 10 comes into contact with the paper frame 104 of the paper stack 100. Here, as shown in FIGS. 5 to 8, the short cutting blade 16 that constitutes the cutting unit 10 is formed to be concave in an arc shape facing upward in the vertical direction. Therefore, the pressing surfaces 23 formed on both ends of the short cutting blade 16 come into contact with the paper frame 104 before the blade 22. Here, because the pressing surfaces 23 are formed on both ends of the blade 22 in the longitudinal direction, the pressing surfaces 23 come into contact with the four corners of the pattern surface 102 on the paper frame 104. As a result, the four corners of the pattern surface 102 to be punched can be supported by the pressing surfaces 23.

[0041] Furthermore, when the lifting platform 3 moves upward in the vertical direction, the blade 22 of the short cutting blade 16 comes into contact with the paper frame 104. As described above, the four corners of the pattern surface 102 are supported by the pressing surfaces 23. Therefore, only the paper frame 104 can be pressed down by the short cutting blade 16 relative to the pattern surface 102 supported by the support portion 7b. As a result, it is possible to prevent the printed matter 101 from shifting in the horizontal direction.

[0042] Here, a cut 103 is formed in advance between the patterned surface 102 of the printed matter 101 and the paper frame 104, and the patterned surface 102 and the paper frame 104 are connected only by a seam 110. Therefore, the patterned surface 102 can be separated from the paper frame 104 by cutting only the seam 110.

[0043] The middle portion 21, which is the sharpest point of the short cutting blade 16, is located near the seam 110 in the printed material 101. Therefore, the cutting force of the cutting unit 10 can be concentrated at one point on the seam 110 in the paper frame 104. This makes it possible to cut the seam 110 with less cutting force than when cutting all four sides of the patterned surface 102.

[0044] Furthermore, the base 7a of the paper stack setting unit 7 is supported by multiple springs 11 provided on the movable unit 5. Therefore, the support portion 7b of the base 7a can push up the patterned surface 102 with a uniform force. Furthermore, the multiple springs 11 can prevent the cutting unit 10 from pressing the paper frame 104 with excessive force in places, and the cutting unit 10 can press down the paper frame 104 with a uniform force.

[0045] Next, the worker operates the foot pedal 2a of the push-up unit 2 to lower the lifting platform 3 downward in the vertical direction. As a result, the pressing unit 4, movable unit 5, and paper stack setting unit 7 are lowered downward in the vertical direction together with the lifting platform 3. Then, as shown in FIG. 13 , the movable unit 5 is moved along the guide rail 6 until the paper stack setting unit 7 is moved away from the position facing the punching unit 8.

[0046] Next, the worker removes the paper frame 104 of the paper stack 100 and the patterned surface 102 placed on the support portion 7b from the paper stack setting portion 7. This allows only the patterned surface 102 to be punched out from the printed matter 101. The operation of removing the patterned surface 102 may also be performed when the paper stack setting portion 7 shown in FIG. 12 is inserted into the punching portion 8. This completes the operation of punching (cutting out) the patterned surface 102 from the paper stack 100 by the punching device 1 of this example.

[0047] According to the punching device 1 of this example, the cutting unit 10 applies a load only to the seam 110 of the printed matter 101 to separate the patterned surface 102 from the paper frame 104. At this time, the pressing surface 23 of the cutting unit 10 holds down the four corners of the patterned surface 102 on the paper frame 104. This prevents the printed matter 101 from shifting, and allows the patterned surface 102 to be punched out (cut out) accurately, even with a paper stack 100 in which the friction between sheets of paper is low, such as tack paper.

[0048] Furthermore, the short cutting blade 16 that constitutes the cutting unit 10 has a pressing surface 23 with a middle portion 21 formed in an arc shape that is concave upward in the vertical direction. This middle portion 21 is formed to be the sharpest among the short cutting blades 16. This allows the cutting force that occurs when the cutting unit 10 presses the paper frame 104 to be concentrated at one point on the seam 110 of the paper frame 104.

[0049] Furthermore, the paper-sheet stack setting unit 7 is provided with a side wall 7c that surrounds the periphery of the paper-sheet stack 100. This side wall 7c is formed to be movable in the horizontal direction. This makes it possible to easily align the paper-sheet stack 100 in the horizontal direction using the side wall 7c. Furthermore, the side wall 7c not only prevents the paper-sheet stack 100 from moving in the horizontal direction, but also prevents the printed matter 101 from shifting in the horizontal direction when the pattern surface 102 is punched out.

[0050] The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the spirit of the invention as set forth in the claims.

[0051] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted. [Explanation of symbols]

[0052] 1...punching device, 2...push-up section, 2a...foot pedal section, 3...lifting platform, 4...pressing section, 5...moving section, 6...guide rail, 7...paper stack setting section, 7a...base, 7b...support section, 7c...side wall section, 8...punching section, 9...support column, 10...cutting section, 11...spring (pressure suppressing section), 15...long cutting blade, 16...short cutting blade, 21...intermediate section, 22...blade, 23...pressing surface, 100...paper stack, 101...printed matter, 102...patterned surface, 104...paper frame, 110...seam

Claims

1. a paper stack setting unit on which a paper stack including a plurality of printed materials each having a patterned surface and a paper frame surrounding the patterned surface is set; a movable portion that supports the paper stack setting portion; a push-up unit that moves the movable unit and the paper stack setting unit in the up and down direction; a cutting unit disposed above the paper stack setting unit in the up-down direction and facing the paper stack set in the paper stack setting unit, the cutting unit has a cutting blade that presses the paper frame of the printed matter, The punching device is characterized in that the paper stack setting unit has a support unit that supports the pattern surface.

2. 2. The punching device according to claim 1, wherein the cutting blade has a blade that is concave in an arc shape.

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