JP2012228755A - Face plate for sheet punching die, and sheet punching method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a face plate having a structure, in which production of filiform waste or paper powder is reduced, even in a sheet of an internal structure which has a thickness like a cardboard sheet and in which many cavities are formed.SOLUTION: The face plate 1 is formed of a base plate 2 having a groove 103 for creasing in a position facing a creasing member. In a position facing a punching blade 26 on the upper surface 2a side of the base plate 2, a groove 6 for punching is formed to receive the punching blade 26 when punching a cardboard sheet 100. A first area surrounded with the groove 103 for creasing on the upper surface 2a side of the base plate 2 is recessed at a predetermined depth not to crush the sheet in the area to form a recess 7 having a flat bottom surface, and a second area 4 surrounded with the groove 6 for punching and the groove 103 for creasing is penetrated not to crush the sheet in the area.

Description

  The present invention relates to a surface stencil for a sheet punching die, and more particularly to a surface stencil used for punching a sheet and providing a crease for assembling a paper container, and a sheet punching method using the surface stencil.

  Paper containers (packaging containers, boxes) that are formed by punching, folding, and bonding sheets made of paper and composite materials of paper and resin, metal, etc. are lightweight and convenient to carry. It is widespread in many industrial fields, such as the electronic parts industry and the automotive industry.

  A conventional punching die 22 shown in FIG. 50 is used for punching a sheet 100, and performs laser processing on a plywood board according to an outer shape to be a paper container and a ruled line for bending, and a punching blade corresponding to the outer shape to be a paper container. A through groove for 26 and a through groove for the ruler member 25 are formed, and the punching blade 26 and the ruler member 25 having a smaller height than the punching blade 26 are embedded in each through groove. The punching die 22 is manufactured so that the protruding amount of the ruled member 25 is less than the punching blade 26.

  In the punching process, the sheet 100 is inserted between the punching die 22 mounted on the upper side of the punching machine 19 and the receiving die 21 on the lower side of the punching machine 19 so that the punching die 22 and the receiving die 21 are brought close to each other. Next, they are isolated and punched (see FIG. 26). That is, while cutting into a predetermined shape with the punching blade 26, a plurality of crease lines 101 b are engraved in a required portion by the ruler member 25 to form a blank (punched sheet) 100. Next, valley folding is performed along the crease line 101b of the blank 100, and a paper container is assembled by fixing the tape or pasting a paste margin.

  In the conventional punching die 22 shown in FIG. 50, when the sheet 100 is punched and the folding line 101b is applied, the groove 201 is formed at a position corresponding to the ruled member 25 in order to engrave the folding line 101b more accurately. The formed face plate 200 is attached to the upper surface 21 a of the receiving die 21 of the punching machine 19. That is, by forming the groove 201 having a predetermined depth in the face plate 200, the sheet 100 pressed downward by the ruler member 25 forms a convex line 101a having a predetermined shape on the opposite side of the folding line 101b. The ruled member 25 reduces damage to the blank 100 and facilitates bending of the blank 100.

  The surface plate 200 is composed of a plate-like or film-like substrate, and recently, a surface plate that can be reused by applying or reusing a paste on the back surface of the substrate has been on the market. (See Patent Document 1). These face plates 200 are made of synthetic resin such as ABS, PBT, PPS, phenol resin, etc., and positions corresponding to the ruled members 25 of the punching die 22 by the NC processing machine from CAD data for manufacturing the punching die 22. Then, the groove 201 is cut and processed so that the portion with which the punching blade 26 abuts becomes the outer periphery.

  As a method for attaching the face plate 200 to the receiving die 21, for example, there is a method shown in Patent Document 2, in which a transfer positioning jig 29 is removably inserted into a positioning hole of a punching die (male die). Then, the transfer member 12 is transferred onto the receiving mold 21 and aligned so that the outer periphery of the transfer member 12 becomes a through hole 212 provided in the surface plate 200, and an adhesive is applied to the upper surface 21 a of the receiving mold 21. A method of bonding is known (see FIGS. 50 to 52).

  In the case of a thick sheet 100 such as corrugated cardboard, when the sheet 100 is punched and the crease 101 is applied, the predetermined line 102 of the sheet 100 pushed downward by the ruler member 25 is not clear. 100 may be difficult to bend at the crease 101, and has been regarded as a problem. Therefore, the inventor of the present application, as shown in Patent Document 3, is a crushing tool at a position facing a line 101a having a predetermined shape (a concave line in Patent Document 3) of the sheet 100 pressed downward by the ruler member 25. A structure has been devised in which the material is stuck on a cutting plate (on a flat plate).

  On the other hand, when the material of the sheet 100 is a material that is difficult to be deformed, such as cardboard, when the sheet 100 is punched and the crease 101 is applied, the corners of the groove 201 formed in the face plate 200 are provided. Since the root of the line 101a having a predetermined shape of the sheet 100 pressed downward by the ruler member 25 is pressed, the load load tends to increase locally, and the load load exceeding the bending strength or tensile strength of the sheet 100 When this happens, problems such as buckling of the base of the line 101a having a predetermined shape of the sheet 100 and cracking of the surface layer occur, which is regarded as a problem. Therefore, as shown in Patent Document 4, the inventor of the present application provides a convex shape, a trapezoidal shape, a chevron shape, and a groove portion at a position corresponding to the predetermined shape line 102 of the sheet 100 pushed downward by the ruler member 25. The structure which sticks the crease tape which exhibits the trapezoid shape which it has on a thin board | substrate sheet | seat (on a flat plate) was devised. According to Patent Document 4, for example, when the crease tape has a convex shape, the predetermined line 101a of the sheet 100 becomes a concave line, and for example, the crease tape has a concave shape. In this case, the predetermined line 101a of the sheet 100 is a convex line.

  However, the crushing tool and the crease tape are both stuck on a flat plate, and the crushing tool and the crease tape may be peeled off depending on the contact angle when the sheet abuts. It is difficult to say that the reliability for punching a large amount of sheets in a short time is sufficient.

JP 2009-107354 A JP 2010-30040 A Utility Model Registration No. 311409 Utility Model Registration No. 3132946

  In addition to paper, cardboard, and coated paper, the sheet includes a plurality of papers and composite materials of paper, resin, and metal. In particular, corrugated cardboard has a corrugated core attached to a liner. In addition, since the inner side is reinforced with a liner on the back side, many cavities are formed in the sheet, and there are problems such as poor appearance such as surface cracks of the sheet and difficult folding because the sheet folding line is not clear. It is likely to occur. When punching, if the cardboard is pressed hard, the cardboard will be crushed. And paper dust is likely to occur.

  Therefore, the object of the present invention is to secure the reliability necessary for punching a large number of sheets in a short time while eliminating appearance defects such as surface cracks of the sheet, and is thick like a corrugated cardboard sheet and has a cavity in the sheet. The present invention also provides a surface plate having a structure in which the generation of thread-like debris and paper dust is reduced, and a sheet punching method using the surface plate.

  The face plate of the present invention is a punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet and a punching die and a receiving die for receiving the sheet are attached. When the sheet is punched to form the outer shape of the paper container and the crease is given, the sheet is attached to the receiving mold and used at a position opposite to the crease member to form a crease groove for giving the crease to the sheet. A surface plate provided with a formed substrate, wherein an area surrounded by the groove for ruled surface on the substrate is depressed or penetrated at a predetermined depth so as not to crush the sheet in the area. It is characterized by being.

  According to the present invention, the area surrounded by the ruled groove is recessed or penetrated at a predetermined depth so that the sheet surface facing the area is not crushed. Defects such as surface cracks are unlikely to occur, and when punching, cutting with the punching blade while pressing with the ruler member to the extent that the sheet is not misaligned, it is difficult for thread-like scraps and paper dust to occur Become.

  The face plate of the present invention is a punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet and a punching die and a receiving die for receiving the sheet are attached. A ruled groove for attaching a folding line to a sheet at a position opposite to the ruled member, used when punching the sheet to give the outer shape of the paper container and applying a folded line to the receiving mold. And a punching groove for receiving the punching blade from which a sheet has been punched is formed at a position opposite to the punching blade on the substrate. It is characterized by that.

  According to the present invention, the cutting edge of the punching blade is formed by a structure in which a punching groove for receiving the punching blade when punching a sheet is formed at a position facing the punching blade on the substrate. Because of the escape structure, it is not necessary to bring the punching blade into contact with the upper surface of the face plate, and when punching, the sheet is cut with the punching blade while being pressed by the ruler member to such an extent that the sheet is not displaced. As a result, thread-like waste and paper dust are less likely to be generated.

  The area surrounded by the groove on the substrate is formed by machining, for example, a recess of a predetermined depth is formed by milling or router processing, or a window penetrated by pressing or laser processing, for example. It is formed. The punching groove is formed by machining. For example, the punching groove having a predetermined depth is formed by milling or router processing.

  The said surface plate is good also as a surface plate which can be reused by apply | coating the adhesive agent (reuse paste) which can be reused by sticking or peeling on the back surface of a board | substrate. By applying this reuse glue, when pasting on the cutting plate with a positioning jig, it is easy to paste at the correct position by repeating pasting, peeling and re-pasting in one continuous operation. it can.

  Examples of the material of the substrate include synthetic resins such as ABS, PBT, PPS, phenol resin, polyethylene, polypropylene, and polycarbonate, metals such as aluminum and stainless steel, and composite materials combining these synthetic resins and metals. However, from the viewpoint of ease of processing and ease of deformation for bringing the surfaces into close contact when the receiving mold is not only a flat plate but also a cylindrical shape (roller shape), the substrate is plate-shaped or film-shaped. It is preferable that Alternatively, the surface plate may have a semi-cylindrical shape or an arc shape in addition to the plate shape or the film shape. For example, in the case of a cylindrical (roller-shaped) receiving mold, a punching groove, a ruled groove, etc. are provided in a resin formed into a semi-cylindrical shape or an arc shape in accordance with the circumferential shape of the receiving mold. Thus, when the surfaces are brought into close contact with each other at an accurate position, it is easy to ensure the strength required for the surface slab when punching the cardboard sheet and applying the crease.

  The present invention includes a first area surrounded by the ruled grooves on the substrate and a second area surrounded by the punching blade and the ruled grooves on the substrate. In the first area and the second area, the sheet is depressed or penetrated at a predetermined depth so as not to be crushed.

  According to the present invention, a first area surrounded by the ruled groove on the substrate, and a second area surrounded by the punching blade and the ruled groove on the substrate are provided. Since the sheet is depressed or penetrated at a predetermined depth so as not to crush the sheet in the first area and the second area, the surface of the sheet facing the area can be prevented from being crushed. It is easy to minimize problems such as surface cracks in the sheet.

  The present invention is characterized in that, when punching out a corrugated cardboard sheet as one paper container and providing a crease, the face plate is a single face plate.

  According to the present invention, since the face plate is a single face plate, when the receiving mold is not only a flat plate but also a cylindrical shape (roller shape), the surfaces can be easily brought into close contact with each other at an accurate position. It is easy to ensure the strength required for the surface plate when punching the cardboard sheet and providing the crease.

  It is preferable that rubber members are arranged on the inner side and the outer side of the punching blade, and rubber members are arranged on the inner side and the outer side of the ruled member. This is because when the sheet is punched and the crease is given, it is easy to give the crease while cutting the sheet while holding the sheet so as not to move. Examples of the material of the rubber member include rubber materials such as silicone rubber, nitrile rubber, butyl rubber, and urethane rubber, elastomers, and synthetic resins that are easily elastically deformed.

  The size of the outer periphery of the face plate is set slightly smaller than the position facing the punching blade or larger than the position facing the punching blade. Since the size of the outer periphery of the face plate is set to be slightly smaller than the position facing the punching blade, it is not necessary to bring the punching blade into contact with the face plate. Even when the surface plate is used, it is easy to ensure reliability for punching a large amount of sheets in a short time. On the other hand, since the size of the outer periphery of the face plate is set to be larger than the position facing the punching blade, the sheet plate and the rubber member disposed outside the punching blade are used. It becomes easy to cut while pressing the outer part of the so as not to move.

  In the present invention, it is preferable that the substrate side wall in the area is formed with a slope whose thickness decreases toward the inside over the entire circumference. According to the present invention, by forming the inclination on the substrate, when punching the sheet and applying a crease, while pressing the sheet so as not to move using the rubber member or the like, When a crease is applied while cutting, indentations are less likely to be formed near both sides of the cut portion of the sheet, or near both sides of the convex line or the concave line on the opposite side of the sheet.

  The punching blade and the ruled member are made of hard metal such as stainless steel or steel. The punching blade has a sharp tip, and the ruled member has a round tip. The punching blade can be a saw blade at the tip, and the cutting blade is received by the punching groove, so that when cutting the sheet, cutting is performed while locally cutting the sheet cutting line. Since the portion is cut with a long length, thread-like debris and paper dust generated when cutting are further less likely to occur.

  A taper along one or all of the ruled grooves is formed in the ruled grooves (grooves at positions facing the ruled members) formed on the substrate in order to change the shape of the ruled grooves. For example, the tape has a configuration in which the upper side protrudes from the upper surface of the substrate and a depression corresponding to the ruled member is formed. When a sheet is punched and a crease is provided, a convex line can be formed on the sheet by abutment of a recess formed in the tape on a line on the opposite side of the sheet as a crease. Further, for example, when the tape is punched out and the crease is given by forming the tape so that the upper side protrudes from the upper surface of the substrate and the protrusion corresponding to the ruled member is formed. In addition, a concave line can be formed on the sheet by the protrusion formed on the tape coming into contact with the line on the side opposite to the position where the sheet is to be folded. And, for example, the substrate is made of a plate-like or film-like resin, and the tape is made of a resin or a rubber having a smaller elastic modulus than the substrate, so that a load applied to the convex line and the concave line of the sheet is applied. Is effectively received and dispersed by the tape. That is, the tape functions as a buffer between the convex lines and concave lines of the sheet and the substrate, and prevents problems such as surface cracks at the convex lines and concave lines of the sheet.

  The sheet punching method of the present invention is a punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet and a punching die and a receiving die for receiving the sheet are attached. A ruled groove for providing a folding line to the sheet is formed at a position opposite to the ruled member, and an area surrounded by the ruled groove on the substrate is the area. In order not to crush the sheet, a surface plate that is depressed or penetrated at a predetermined depth is attached to the receiving mold and used so that the sheet has the outer shape of the paper container while not crushing the sheet in the area. And a crease is provided.

  According to the present invention, the surface of the sheet facing the area does not need to be crushed, and problems such as surface cracking of the sheet in the area are unlikely to occur, and the punching member is such that the sheet is not misaligned when punching. Since it is cut with the punching blade while being held in place, thread-like debris and paper dust are hardly generated.

  The sheet punching method of the present invention is a punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet and a punching die and a receiving die for receiving the sheet are attached. A ruled groove for providing a folding line to the sheet is formed at a position opposite to the ruled member, and the sheet is punched at a position opposite to the punching blade on the substrate. A surface plate on which a punching groove for receiving the punching blade is formed is attached to the receiving mold and used so that the outer shape of the paper container is obtained while the punching blade is received by the punching groove. And a crease is provided.

  According to the present invention, the cutting edge of the punching blade is released by the punching groove, so that the punching blade does not come into contact with the face plate, and the sheet is not misaligned when punching. In addition, since it is cut with the punching blade while being pressed by the ruler member, thread-like waste and paper dust are hardly generated.

  In the present invention, an area surrounded by the ruled grooves on the substrate is defined as a first area, and a second position surrounded by a position facing the punching blade on the substrate and the ruled grooves. The area is recessed or penetrated at a predetermined depth so as not to crush the sheet in the second area. It is characterized in that the pressing force at the part facing the surface is reduced or no pressing force is applied.

  According to the present invention, a first area surrounded by the ruled groove on the substrate, and a second area surrounded by the punching blade and the ruled groove on the substrate are provided. Since the sheet is depressed or penetrated at a predetermined depth so as not to crush the sheet in the first area and the second area, the surface of the sheet facing the area can be prevented from being crushed. To minimize defects such as surface cracks in the sheet.

  In the present invention, the punching blade is a saw blade, and rubber members are arranged on the inside and outside of the saw blade. When the sheet is punched and a crease is provided, the sheet is displaced by the rubber member. The sheet is punched out with the saw blade while holding it down.

  According to the present invention, when punching a sheet and applying a crease, the sheet is punched by the saw blade while pressing the sheet so that the sheet is not displaced by the rubber member. The cutting part is cut while making the cutting line longer locally, and it becomes more difficult to generate thread-like waste and paper dust generated when cutting.

  According to the face plate of the present invention, a punching groove for receiving the punching blade when punching a sheet is formed at a position facing the punching blade on the substrate, and the cutting edge of the punching blade is formed. Therefore, it is not necessary to bring a punching blade into contact with the face plate. Further, according to the sheet punching method of the present invention, there is provided a surface plate including a substrate on which a punching groove for receiving the punching blade is formed when punching a sheet at a position opposite to the punching blade. Attaching to the receiving mold, punching the sheet to give the outer shape of the paper container while receiving the punching blade in the punching groove and providing a crease, so that the punching blade is not brought into contact with the face plate The cutting edge of the punching blade is allowed to escape, and it becomes easy to cut while pressing the outer portion of the sheet so as not to move with the surface plate and the rubber member arranged outside the punching blade. .

  According to the present invention, a first area surrounded by the ruled groove on the substrate, and a second area surrounded by the punching blade and the ruled groove on the substrate are provided. Since the sheet is depressed or penetrated at a predetermined depth so as not to crush the sheet in the first area and the second area, the pressing force at the location where the sheet faces in these areas is reduced. By preventing the pressing force from being applied, problems such as surface cracking of the sheet in the area are minimized. According to the present invention, when punching a sheet and applying a crease, the sheet is punched by the saw blade while pressing the sheet so that the sheet is not displaced by the rubber member. The cutting part is cut while lengthening the cutting line while locally cutting the cutting line, thereby further suppressing the thread-like waste and paper dust generated when cutting. These inventions ensure the reliability necessary for punching a large number of sheets in a short time while solving the problems of poor appearance such as surface cracks of the sheet and the difficulty of folding the sheet because the folding line of the sheet is not clear. However, even a sheet having an internal structure that is thick and has many cavities in the sheet, such as a cardboard sheet, has a structure in which the generation of thread-like waste and paper dust is reduced, and a high-quality paper container can be manufactured. .

It is a figure which shows the surface plate of the 1st Embodiment of this invention, (a) is a top view, (b) is a side view. It is A-A 'line sectional drawing of the surface plate of the said embodiment. It is a B-B 'line sectional view of the surface plate of the above-mentioned embodiment. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a figure which shows the surface plate of the 2nd Embodiment of this invention, (a) is a top view, (b) is a side view. It is A-A 'line sectional drawing of the surface plate of the said embodiment. It is a B-B 'line sectional view of the surface plate of the above-mentioned embodiment. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a figure which shows the other example of the surface plate of the said embodiment, (a) is a side view, (b) is a top view. It is a figure which shows the surface plate of the 3rd Embodiment of this invention, (a) is a top view, (b) is a side view. It is A-A 'line sectional drawing of the surface plate of the said embodiment. It is a B-B 'line sectional view of the surface plate of the above-mentioned embodiment. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a side view which shows the other example of the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the other example of the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the other example of the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a figure which shows the surface plate of the 4th Embodiment of this invention, (a) is a top view, (b) is a side view. It is A-A 'line sectional drawing of the surface plate of the said embodiment. It is a B-B 'line sectional view of the surface plate of the above-mentioned embodiment. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a figure which shows the surface plate of the 5th Embodiment of this invention, (a) is a top view, (b) is a side view. It is A-A 'line sectional drawing of the surface plate of the said embodiment. It is a B-B 'line sectional view of the surface plate of the above-mentioned embodiment. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a figure which shows the surface plate of the 6th Embodiment of this invention, (a) is a top view, (b) is a side view. It is A-A 'line sectional drawing of the surface plate of the said embodiment. It is a B-B 'line sectional view of the surface plate of the above-mentioned embodiment. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state before punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state when punching a sheet | seat. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat. It is a figure which illustrates the punching blade (push cutting blade) attached to a punching die. It is a figure which illustrates the punching blade (saw blade) attached to a punching die. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat with a push cutting blade. It is a side view which shows the relationship between the surface plate of the said embodiment, a sheet | seat, a punching die, and a receiving die, and is a figure which shows the state after punching a sheet | seat with a saw blade. It is a figure which illustrates the tape which concerns on the surface plate of embodiment of this invention. It is a figure which illustrates the sheet | seat punched out using the surface plate of this invention, (a) is a top view, (b) is a bottom view. It is a figure which illustrates the sheet | seat punched out using the surface plate of this invention, (a) is a top view, (b) is a bottom view. It is a figure which illustrates the sheet | seat punched out using the surface plate of this invention, (a) is a top view, (b) is a bottom view. It is a figure which shows the different relationship from the above with the surface plate which concerns on this invention, and a sheet | seat, a punching die, and a receiving die, (a) is a side view which shows a surface plate, (b) is a side surface which shows a sheet processing state FIG. It is a figure which shows the relationship between the conventional surface plate, a sheet | seat, a punching die, and a receiving die, (a) is a front view, (b) is a side view. It is a figure which illustrates the conventional punching die in the state which made the blade edge | side the near side, (a) is a front view, (b) is a side view. It is a figure which illustrates the conventional receiving type in the state which made the surface plate the near side.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(First embodiment)
The face plate 1 according to the first embodiment of the present invention includes a plate-like substrate 2 (FIGS. 1 to 3). An adhesive (reuse paste) that can be reused by being pasted or peeled off is applied to the back surface 2 b of the substrate 2. The face plate 1 is used by being attached to a receiving mold when the sheet 100 is punched out so as to have an outer shape of a paper container and a crease is provided. In the example shown in FIG. 1, the substrate 2 has a rectangular shape, and positioning through holes 105 are formed in the vicinity of a plurality of corners. Two or more through holes 105 for positioning need only be formed. In the example shown in FIG. 1, the through holes 105 are formed in the vicinity of three corners. FIG. 1A is a plan view of the surface plate 1, and FIG. 1B is a side view of the surface plate 1. 2 is a cross-sectional view taken along the line AA ′ of the surface slab 1, and FIG. 3 is a cross-sectional view taken along the line BB ′ of the surface slab 1.

  FIG. 46 illustrates a corrugated cardboard sheet 100 punched out using the surface plate 1 of the present embodiment. The corrugated cardboard sheet 100 is a box-shaped container or a box-shaped lid. FIG. 46A is a plan view of the corrugated cardboard sheet 100, and an alternate long and short dash line portion surrounded by a square shape at the center is a folding line 102b. FIG. 46B is a bottom view of the corrugated cardboard sheet 100, and a portion between two alternate long and short dash lines surrounded by a central square shape is a convex line 102a. The convex line 102a is located on the opposite side of the folding line 102b.

  A plurality of ruled grooves 103 are formed at positions facing the ruled member 25 on the upper surface 2a side of the substrate 2 shown in FIG. The ruled groove 103 is for forming a convex line 102a on the sheet when the folding line 102b is applied to the sheet 100. The groove width of the ruled groove 103 is the width (thickness) of the ruled member 25. Is set to be slightly larger than the thickness of the sheet 100 as a guide. And the dotted line shown with the code | symbol 60 represents the position (position along the external shape line of the cardboard sheet | seat 100) facing the punching blade 26. FIG. In the present embodiment, on the upper surface 2 a side of the substrate 2, the first area surrounded by the ruled groove 103 is the penetrating window 5. Further, on the upper surface 2a side of the substrate 2, a second area surrounded by a dotted line indicated by reference numeral 60 which is a position facing the punching blade 26 and the groove for ruled rule 103 is a through window 4. . In FIG. 1, four through windows 4 are formed, and one through window 5 is formed.

  According to the present embodiment, since the through windows 5 are formed in these first areas and the through windows 4 are formed in the second areas, the surface of the sheet 100 facing these first and second areas. (Here, five surfaces) are not crushed, and problems such as surface layer cracking of the sheet 100 are minimized.

  Then, on the upper surface 2a side of the substrate 2 shown in FIG. 1, the substrate side wall in the first area (through window 5) is formed with a slope 15 whose thickness decreases toward the inside over the entire circumference. Further, the substrate side wall in the second area (penetrating window 4) is formed with a slope 14 whose thickness decreases toward the inside over the entire circumference. These through windows 4 and 5 are formed by, for example, pressing or laser processing, and the slopes 14 and 15 are formed by, for example, milling or router processing.

  According to the present embodiment, since the slopes 14 and 15 are formed on the upper surface 2a side of the substrate 2, when the sheet 100 is punched and the crease 102b is applied, the rubber member 27 described later is used. When the fold line 102b is applied while pressing the sheet 100 so as not to move, the sheet 100 is positioned near both sides of the cut portion of the sheet 100, or near both sides of the convex line 102a opposite to the fold line 102b of the sheet 100. Indentation is difficult to stick.

  An adhesive (reuse paste) that can be reused by being pasted or peeled off is applied to the lower surface 2 b side of the substrate 2. In addition, by applying this reuse paste, when the guide hole 105 provided in the substrate 2 is used, and pasting on the cutting plate 21 with a known positioning jig (positioning jig such as a columnar shape or a conical shape). It can be easily pasted at an accurate position by repeating pasting, peeling and re-pasting by one continuous operation.

  Examples of the material of the substrate 2 include synthetic resins such as ABS, PBT, PPS, phenol resin, polyethylene, polypropylene, and polycarbonate, metals such as aluminum and stainless steel, and composite materials combining these synthetic resins and metals. It is done. In this embodiment, considering that the punching blade 26 is in contact with the upper surface 2a side of the substrate 2, the substrate 2 is made of metal such as aluminum or stainless steel. In the present embodiment, since the surface plate 1 is a single surface plate, it is easy to ensure the strength required for the surface plate 1 when punching the cardboard sheet 100 and applying the crease 102b.

  4 to 6 are side views showing the relationship between the face plate 1 of the present embodiment, the sheet 100, the punching die 22 and the receiving die 21 (cutting plate 21). The punching die 22 is used for punching of the sheet 100. The punching die 22 is subjected to laser processing on the plywood according to the outer shape to be a paper container and the ruled lines for bending, and a through groove for the punching blade 26 corresponding to the outer shape to be a paper container. The punching die 22 is manufactured by forming through grooves for the ruled member 25 and embedding the punching blade 26 and the ruled member 25 in the respective through grooves. The punching blade 26 and the ruled member 25 are made of hard metal such as stainless steel or steel. The punching blade 26 has a sharp tip, and the ruled member 25 has a round tip. The protruding amount of the ruled member 25 is set to be the same as or smaller than the protruding amount of the punching blade 26. Rubber members 27 are disposed on the inside and outside of the punching blade 26, and rubber members 27 are disposed on the inside and outside of the ruled member 25. This is because when the sheet 100 is punched and the folding line 102b is applied, it is easy to apply the folding line 102b while cutting the sheet 100 while holding the sheet 100 so as not to move. Examples of the material of the rubber member 27 include rubber materials such as silicone rubber, nitrile rubber, butyl rubber, and urethane rubber, elastomers, and synthetic resins that are easily elastically deformed.

  4 is a view showing a state before punching out the cardboard sheet 100, FIG. 5 is a view showing a state when punching out the cardboard sheet 100, and FIG. 6 is a view showing a state after punching out the cardboard sheet 100. is there. In the punching process, the corrugated cardboard sheet 100 is inserted between the punching die 22 and the receiving die 21 (FIG. 4), the punching die 22 and the receiving die 21 are brought close to each other, and the restoring force of the rubber member 27 is used. The crease 102b is applied while cutting and holding the cardboard sheet 100 to such an extent that the cardboard sheet 100 is not displaced (FIG. 5). At this time, the line pressed by the punching blade 26 of the cardboard sheet 100 is cut, but the opposite side of the line pressed by the ruled member 25 of the cardboard sheet 100 is released by the ruled groove 103. It becomes the convex line 102a. At this time, the surface of the corrugated cardboard sheet 100 facing the area is not crushed by the through window 5 located in the first area and the through window 4 located in the second area. Further, the substrate sidewall in the first area (through window 5) is formed with an inclination 15 that decreases in thickness toward the inside over the entire circumference, and is formed on the substrate sidewall in the second area (through window 4). Is formed with slopes 14 that decrease in thickness toward the inside over the entire circumference, and therefore, near both sides of the cut portion of the cardboard sheet 100 and both sides of the convex line 102a on the opposite side of the folding line 102b of the cardboard sheet 100. It becomes difficult to make indentations in the vicinity. Then, after punching out the cardboard sheet 100, the punching die 22 and the receiving die 21 are separated, and the cardboard sheet 100 is dropped from the punching blade 26 or the ruled member 25 using the restoring force of the rubber member 27 (FIG. 6). ).

  According to this embodiment, defects such as surface layer cracking of the corrugated cardboard sheet 100 are unlikely to occur, and when punching, the corrugated cardboard sheet 100 is cut with a punching blade while being pressed to the extent that the cardboard sheet 100 is not displaced. And paper dust is less likely to occur. In the next step, the punched sheet 100 is valley-folded along the crease 101b, and a paper container is assembled by fixing the tape or bonding the paste margin.

  FIG. 13 is a diagram showing another example of the surface slab 1 of the above embodiment. In the example shown in FIG. 13, the size of the outer periphery of the face plate 1 is set to be slightly smaller than the position facing the punching blade 26, and the punching blade 26 is not brought into contact with the face plate 1. Therefore, even when the surface plate 1 made of synthetic resin is used, it is easy to ensure reliability for punching a large amount of sheets in a short time.

(Second Embodiment)
The surface plate 1 according to the second embodiment of the present invention is a single surface plate composed of a plate-like substrate 2 as in the first embodiment (FIGS. 7 to 9). Here, the same reference numerals represent the same functions, and description thereof will be omitted as appropriate. In the present embodiment, the substrate 2 is made of resin. A punching groove 6 for receiving the punching blade 26 when punching the cardboard sheet 100 is formed on the upper surface 2a side of the substrate 2 at a position facing the punching blade 26. The groove width of the punching groove 6 is set to be the same as or slightly larger than the width (thickness) of the punching blade 26, and is set within a range in which the corrugated cardboard sheet 100 does not sink.

  Further, in the present embodiment, on the upper surface 2 a side of the substrate 2, the first area surrounded by the ruled groove 103 is recessed at a predetermined depth, and the recess 7 having a flat bottom surface is formed. The recess 7 is formed by, for example, milling or router processing. In the example shown in FIG. 7, two through holes 105 for positioning are formed in the recess 7 in the center of the substrate 2 at a predetermined interval.

  10 is a view showing a state before punching out the cardboard sheet 100, FIG. 11 is a view showing a state when punching out the cardboard sheet 100, and FIG. 12 is a view showing a state after punching out the cardboard sheet 100. is there. Here, the protruding amount of the ruled member 25 is set smaller than the protruding amount of the punching blade 26. In the punching process, the corrugated cardboard sheet 100 is inserted between the punching die 22 and the receiving die 21 (FIG. 10), the punching die 22 and the receiving die 21 are brought close to each other, and the restoring force of the rubber member 27 is used. The crease 102b is applied while cutting the cardboard sheet 100 while pressing the cardboard sheet 100 so as not to be displaced (FIG. 11). At this time, the line pressed by the punching blade 26 of the corrugated cardboard sheet 100 is cut, but according to the present embodiment, the punching groove 6 has a structure that allows the cutting edge of the punching blade 26 to escape. 1. The punching blade 26 does not need to be brought into contact with the punching blade 1 and is cut while pressing the outer portion of the corrugated cardboard sheet 100 so as not to move between the face plate 1 and the rubber member 27 arranged outside the punching blade 26. Becomes easy. At this time, the line pushed by the ruled member 25 of the corrugated cardboard sheet 100 is escaped by the ruled groove 103 to become a convex line 102a. At this time, the surface of the corrugated cardboard sheet 100 facing the area is not crushed by the recess 7 located in the first area and the through window 4 located in the second area. Further, the substrate sidewall in the first area (indentation 7) is formed with an inclination 15 that decreases in thickness toward the inside over the entire circumference, and the substrate sidewall in the second area (through window 4) is formed on the substrate sidewall. Since the slopes 14 are formed so that the thickness decreases toward the inside over the entire circumference, near both sides of the cut portion of the cardboard sheet 100 and near both sides of the convex line 102a on the opposite side of the folding line 102b of the cardboard sheet 100. It becomes difficult to get an impression. Then, after punching out the cardboard sheet 100, the punching die 22 and the receiving die 21 are separated, and the cardboard sheet 100 is dropped from the punching blade 26 and the ruled member 25 using the restoring force of the rubber member 27 (FIG. 12). ).

  Here, FIGS. 41 and 42 are diagrams illustrating the punching blade 26 attached to the punching die 22 described above. The punching blade 261 shown in FIG. 41 is a push cutting blade having a sharp tip, and in FIG. 41 (b) viewed from the side, the cutting edge is formed continuously and linearly. On the other hand, the punching blade 262 shown in FIG. 42 is a saw blade whose tip is a saw-like shape, and in FIG. Yes. In this embodiment, since the punching groove 6 has a structure that allows the cutting edge of the punching blade 26 to escape, a saw blade 262 as shown in FIG. 42 can be used as the punching blade 26, and the saw blade 262 is punched out. When the corrugated cardboard sheet 100 is cut, the cut portion of the corrugated cardboard sheet 100 is locally cut and the cut portion is cut long to cut the cardboard sheet 100. And paper dust are less likely to occur.

  In the present embodiment, a synthetic resin such as ABS, PBT, PPS, phenol resin, polyethylene, polypropylene, polycarbonate, or the like is used as the material of the substrate 2, which is a single surface plate 1. In addition to being plate-shaped or film-shaped, the surface plate 1 may have a semi-cylindrical shape or an arc shape as shown in FIG. For example, in the case of a cylindrical (roller-shaped) receiving die 29 as shown in FIG. 49B, the resin is molded into a semi-cylindrical or arc-shaped resin in accordance with the circumferential shape of the receiving die 29. By punching the cardboard sheet 100 and applying the crease 102b by providing the punching groove 6, the ruled groove 3, the recess 7 and the through-hole 105 so that the surfaces are in close contact with each other at an accurate position. It is easy to ensure the strength required for the surface plate. Further, the film-shaped face plate 1 may be wound around the cylindrical (roller-shaped) receiving mold 29.

(Third embodiment)
The face plate 1 of the third embodiment of the present invention is a single face plate as in the above-described embodiment (FIGS. 14 to 16). Here, the same reference numerals represent the same functions, and description thereof will be omitted as appropriate. In the present embodiment, the substrate 2 is made of a plate-like or film-like resin, and the ruled groove 103 (groove at a position opposite to the ruled member 25) formed on the substrate 2 has the ruled line. In order to change the shape of the groove 103, the tape 3 is attached along the entire ruled groove 103. FIG. 14A is a plan view of the surface plate 1, and FIG. 14B is a side view of the surface plate 1. FIG. 15 is a cross-sectional view taken along the line AA ′ of the surface slab 1, and FIG. 16 is a cross-sectional view taken along the line BB ′ of the surface slab 1. In this embodiment, the tape 3 is configured such that the upper side protrudes from the upper surface 2a of the substrate 2 and a projection corresponding to the ruled member 25 is formed, and the sheet 100 is punched and folded. When the sheet is applied, the sheet 100 is set (FIG. 17), the punching die 22 and the receiving die 21 are brought close to each other, and the cardboard sheet 100 is pressed while being pressed to the extent that the rubber member 27 is restored. At almost the same time, while the crease 102b is applied, the concave line 102a is formed on the sheet 100 by the protrusion formed on the tape 3 coming into contact with the line on the opposite side of the position of the sheet 100 where the crease 102b is to be formed. (FIG. 18) The punching die 22 and the receiving die 21 are separated, and the punched sheet 100 can be taken out (FIG. 19). The sheet 100 punched out using the face plate 1 of the present embodiment has a fold line 102b formed on the plane side (FIG. 47A) and a concave line 102a formed on the bottom side (FIG. 47B). )).

  The tape 3 is made of resin or rubber having a smaller elastic modulus than that of the substrate 2. For example, the substrate 2 is made of phenol resin, and the tape 3 is made of polyethylene, polypropylene, polycarbonate, or rubber. For example, the substrate 2 is made of polycarbonate, and the tape 3 is made of polyethylene or rubber. According to this embodiment, since the tape 3 is softer than the substrate 2, the tape 3 functions as a buffer between the convex line 102 of the sheet 100 and the substrate 3, and the surface layer is cracked or pressed by the convex line of the sheet. This prevents problems such as being marked.

  20 to 22 are side views showing other examples of the relationship between the surface slab 1 of the above embodiment, the sheet 100, the punching die 22, and the receiving die 21. FIG. In the present embodiment, the punching die 22 in which the two ruled members 25 are arranged close to each other, the tape 3 is protruded from the upper surface 2a of the substrate 2, and the two ruled members 25, 25, a projection corresponding to 25 is formed. That is, when the sheet 100 is punched and the crease is given, the sheet 100 is set (FIG. 20), the punching die 22 and the receiving die 21 are brought close to each other, and the restoring force of the rubber member 27 is used. Is formed on the tape 3 on a line opposite to the position where the folding lines 102b and 102b of the sheet 100 are provided, while simultaneously providing two parallel folding lines 102b and 102b. A concave line 102a is formed in the sheet 100 by the contact of the projected protrusions (FIG. 21), and the punching sheet 22 and the receiving mold 21 are separated to enable the punched sheet 100 to be taken out (FIG. 22). In the sheet 100 punched out using the surface plate 1 of the present embodiment, a concave line composed of two folding lines 102b and 102b is formed on the plane side (FIG. 48B), and the concave line 102a is formed on the bottom side. Is formed (FIG. 48A). According to this embodiment, it becomes easy to bend | fold by emphasizing a folding line, and required intensity | strength can be ensured by compressing in a predetermined range previously.

  In addition to the above embodiment, for example, the tape 3 illustrated in FIG. 45 may be applied. 45c of the tape 34 shown in FIG. 45 (a) is wide and recessed, and the recess 35c of the tape 35 shown in FIG. 45 (b) is recessed in a hemispherical or mortar shape, and the tape shown in FIG. 45 (c). Since the recess 36c of 36 is recessed with a narrow width, the tape 34 has a gentle convex line 102a, the tape 36 has a sharp convex line 102a, and the tape 35 has an intermediate shape between the two. Become. The tape 3 may have the shape shown in FIGS. 45D and 45E. For example, the protrusion 37d of the tape 37 shown in FIG. 45D has a square shape with corners, and FIG. The protrusion 38d of the tape 38 shown in FIG. In the case of the tape 37, the concave line 102a is given a width, and in the case of the tape 38, the concave line 102a has a shape similar to that of the folding line 102b.

  In the present embodiment described above, an area (a dotted line indicated by reference numeral 60 or a punching groove indicated by reference numeral 6) surrounded by the outer peripheral position of the upper surface 2a of the substrate 2 and the position facing the punching blade 26 (the punching groove indicated by reference numeral 6). (Third area) is flat or there is no third area (the size of the outer periphery of the substrate 2 is set to be slightly smaller than the position facing the punching blade 26). However, a depression (third depression) that is depressed at a predetermined depth is formed in the third area so as not to crush the sheet 100, and the third depression near the outside of the sheet 100. However, the surface of the sheet 100 facing the third area is not crushed so as to minimize problems such as surface cracks of the sheet 100, and the lower surface 2b of the face plate 1 is countered with as large an area as possible. Of plate 21 Even if the surface 21a is stably adhered, a plurality of surface plates 1 are connected to form a single surface plate, or a multi-layer structure in which a plurality of surface plates 1 are laminated and bonded together to form a single surface plate Good. Further, a groove deeper than the punching groove 6 is formed at a position opposite to the punching blade 26, and a hard metal recess material is fitted into the cutting blade 26 so that the cutting edge of the punching blade 26 is made of a hard metal recess material. It is also possible to adopt a structure in which the sheet is cut while escaping along the inner side surface.

(Fourth embodiment)
The face plate 1 according to the fourth embodiment of the present invention includes a plate-like substrate 2 (FIGS. 23 to 25). An adhesive (reuse paste) that can be reused by being pasted or peeled off is applied to the back surface 2 b of the substrate 2. The face plate 1 is used by being attached to a receiving mold when the sheet 100 is punched out so as to have an outer shape of a paper container and a crease is provided. In the example shown in FIG. 23, the substrate 2 has a rectangular shape, and positioning through holes 105 are formed in the vicinity of a plurality of corners. Two or more through holes 105 for positioning need only be formed. In the example shown in FIG. 23, the through holes 105 are formed in the vicinity of three corners.

  In the present embodiment, a punching groove 6 for receiving the punching blade 26 when punching the cardboard sheet 100 is formed at a position facing the punching blade 26 on the upper surface 2 a side of the substrate 2. The groove width of the punching groove 6 is set to be the same as or slightly larger than the width (thickness) of the punching blade 26, and is set within a range in which the corrugated cardboard sheet 100 does not sink. FIG. 23A is a plan view of the surface slab 1, and FIG. 23B is a side view of the surface slab 1. FIG. 24 is a cross-sectional view taken along the line A-A ′ of the face plate 1, and FIG. 25 is a cross-sectional view taken along the line B-B ′ of the face plate 1.

  FIG. 46 illustrates a corrugated cardboard sheet 100 punched out using the surface plate 1 of the present embodiment. The corrugated cardboard sheet 100 is a box-shaped container or a box-shaped lid. FIG. 46A is a plan view of the corrugated cardboard sheet 100, and a chain line portion surrounded by a central rectangular shape is a folding line 102b. FIG. 46B is a bottom view of the corrugated cardboard sheet 100, and a portion between two chain lines surrounded by a central square shape is a convex line 102a. The convex line 102a is located on the opposite side of the folding line 102b.

  On the upper surface 2a side of the substrate 2 shown in FIG. 23, a plurality of ruled grooves 103 are formed at positions facing the ruled member 25. The ruled groove 103 is for forming a convex line 102a on the sheet when the folding line 102b is applied to the sheet 100. The groove width of the ruled groove 103 is the width (thickness) of the ruled member 25. Is set to be slightly larger than the thickness of the sheet 100 as a guide.

  An adhesive (reuse paste) that can be reused by being pasted or peeled off is applied to the lower surface 2 b side of the substrate 2. In addition, by applying this reuse paste, when the guide hole 105 provided in the substrate 2 is used, and pasting on the cutting plate 21 with a known positioning jig (positioning jig such as a columnar shape or a conical shape). It can be easily pasted at an accurate position by repeating pasting, peeling and re-pasting by one continuous operation.

  On the upper surface 2a side of the substrate 2 shown in FIG. 23, a plurality of ruled grooves 103 are formed at positions facing the ruled member 25. The ruled groove 103 is for forming a convex line 102a on the sheet when the folding line 102b is applied to the sheet 100. The groove width of the ruled groove 103 is the width (thickness) of the ruled member 25. Is set to be slightly larger than the thickness of the sheet 100 as a guide. In the present embodiment, on the upper surface 2 a side of the substrate 2, the first area surrounded by the ruled groove 103 is the penetrating window 5. Further, on the upper surface 2 a side of the substrate 2, a second area surrounded by the punching groove 6 and the ruled groove 103 is a penetrating window 4. In FIG. 23, four through windows 4 are formed and one through window 5 is formed.

  According to the present embodiment, since the through windows 5 are formed in these first areas and the through windows 4 are formed in the second areas, the surface of the sheet 100 facing these first and second areas. (Here, five surfaces) are not crushed, and problems such as surface layer cracking of the sheet 100 are minimized.

  Then, on the upper surface 2a side of the substrate 2 shown in FIG. 23, the substrate sidewall in the first area (through window 5) is formed with an inclination 15 in which the thickness decreases toward the inside over the entire circumference. Further, the substrate side wall in the second area (penetrating window 4) is formed with a slope 14 whose thickness decreases toward the inside over the entire circumference. These through windows 4 and 5 are formed by, for example, pressing or laser processing, and the slopes 14 and 15 are formed by, for example, milling or router processing.

  According to the present embodiment, since the slopes 14 and 15 are formed on the upper surface 2a side of the substrate 2, when the sheet 100 is punched and the crease 102b is applied, the rubber member 27 described later is used. When the fold line 102b is applied while pressing the sheet 100 so as not to move, the sheet 100 is positioned near both sides of the cut portion of the sheet 100, or near both sides of the convex line 102a opposite to the fold line 102b of the sheet 100. Indentation is difficult to stick.

  An adhesive (reuse paste) that can be reused by being pasted or peeled off is applied to the lower surface 2 b side of the substrate 2. In addition, by applying this reuse paste, when the guide hole 105 provided in the substrate 2 is used, and pasting on the cutting plate 21 with a known positioning jig (positioning jig such as a columnar shape or a conical shape). It can be easily pasted at an accurate position by repeating pasting, peeling and re-pasting by one continuous operation.

  In the present embodiment, a synthetic resin such as ABS, PBT, PPS, phenol resin, polyethylene, polypropylene, polycarbonate, or the like is used as the material of the substrate 2, which is a single surface plate 1. In addition to being plate-shaped or film-shaped, the surface plate 1 may have a semi-cylindrical shape or an arc shape as shown in FIG. For example, in the case of a cylindrical (roller-shaped) receiving die 29 as shown in FIG. 49B, the resin is molded into a semi-cylindrical or arc-shaped resin in accordance with the circumferential shape of the receiving die 29. By punching the cardboard sheet 100 and applying the crease 102b by providing the punching groove 6, the ruled groove 3, the recess 7 and the through-hole 105 so that the surfaces are in close contact with each other at an accurate position. It is easy to ensure the strength required for the surface plate. Further, the film-shaped face plate 1 may be wound around the cylindrical (roller-shaped) receiving mold 29.

  26 to 28 are side views showing the relationship between the face plate 1 of the present embodiment, the sheet 100, the punching die 22 and the receiving die 21 (cutting plate 21). The punching die 22 is used for punching of the sheet 100. The punching die 22 is subjected to laser processing on the plywood according to the outer shape to be a paper container and the ruled lines for bending, and a through groove for the punching blade 26 corresponding to the outer shape to be a paper container. The punching die 22 is manufactured by forming through grooves for the ruled member 25 and embedding the punching blade 26 and the ruled member 25 in the respective through grooves. The punching blade 26 and the ruled member 25 are made of hard metal such as stainless steel or steel. The punching blade 26 has a sharp tip, and the ruled member 25 has a round tip. The protruding amount of the ruled member 25 is set to be the same as or smaller than the protruding amount of the punching blade 26. Rubber members 27 are disposed on the inside and outside of the punching blade 26, and rubber members 27 are disposed on the inside and outside of the ruled member 25. This is because when the sheet 100 is punched and the folding line 102b is applied, it is easy to apply the folding line 102b while cutting the sheet 100 while holding the sheet 100 so as not to move. Examples of the material of the rubber member 27 include rubber materials such as silicone rubber, nitrile rubber, butyl rubber, and urethane rubber, elastomers, and synthetic resins that are easily elastically deformed.

  26 is a diagram showing a state before punching out the cardboard sheet 100, FIG. 27 is a diagram showing a state when punching out the cardboard sheet 100, and FIG. 28 is a diagram showing a state after punching out the cardboard sheet 100. is there. At the time of punching, the corrugated cardboard sheet 100 is inserted between the punching die 22 and the receiving die 21 (FIG. 26), the punching die 22 and the receiving die 21 are brought close to each other, and the restoring force of the rubber member 27 is used. The crease 102b is applied while cutting and holding the cardboard sheet 100 to such an extent that the cardboard sheet 100 is not displaced (FIG. 27). At this time, the line pressed by the punching blade 26 of the cardboard sheet 100 is cut, but the opposite side of the line pressed by the ruled member 25 of the cardboard sheet 100 is released by the ruled groove 103. It becomes the convex line 102a. At this time, the surface of the corrugated cardboard sheet 100 facing the area is not crushed by the through window 5 located in the first area and the through window 4 located in the second area. Further, the substrate sidewall in the first area (through window 5) is formed with an inclination 15 that decreases in thickness toward the inside over the entire circumference, and is formed on the substrate sidewall in the second area (through window 4). Is formed with slopes 14 that decrease in thickness toward the inside over the entire circumference, and therefore, near both sides of the cut portion of the cardboard sheet 100 and both sides of the convex line 102a on the opposite side of the folding line 102b of the cardboard sheet 100. It becomes difficult to make indentations in the vicinity. Then, after punching the cardboard sheet 100, the punching die 22 and the receiving die 21 are separated, and the cardboard sheet 100 is dropped from the punching blade 26 or the ruled member 25 by using the restoring force of the rubber member 27 (FIG. 28). ).

  According to this embodiment, defects such as surface layer cracking of the corrugated cardboard sheet 100 are unlikely to occur, and when punching, the corrugated cardboard sheet 100 is cut with a punching blade while being pressed to the extent that the cardboard sheet 100 is not displaced. And paper dust is less likely to occur. In the next step, the punched sheet 100 is valley-folded along the crease 101b, and a paper container is assembled by fixing the tape or bonding the paste margin.

  Here, FIGS. 41 and 42 are diagrams illustrating the punching blade 26 attached to the punching die 22 described above. The punching blade 261 shown in FIG. 41 is a push cutting blade having a sharp tip, and in FIG. 41 (b) viewed from the side, the cutting edge is formed continuously and linearly. On the other hand, the punching blade 262 shown in FIG. 42 is a saw blade whose tip is a saw-like shape, and in FIG. Yes. In the present embodiment, since the punching groove 6 has a structure that allows the cutting edge of the punching blade 26 to escape, a saw blade 262 as shown in FIG. 42 can be used as the punching blade 26.

  43 and 44 are side views showing the relationship between the face plate 1 of the above embodiment, the corrugated cardboard sheet 100, the punching die 22 and the receiving die 21. FIG. When the punching blade 261 is used to punch, the cutting line of the corrugated cardboard sheet 100 is pushed at a time, and depending on the material of the corrugated cardboard sheet 100, the ceiling on the back side is pushed and long thread-like fiber scraps 199 are easily generated ( FIG. 43). On the other hand, when it is punched with the saw blade 262, the cutting portion is cut long while locally cutting the cutting line of the corrugated cardboard sheet 100, so that the thread-like scraps and paper dust generated when cutting are cut as much as possible. It will be suppressed.

(Fifth embodiment)
The face plate 1 of the fifth embodiment of the present invention is a single face plate as in the fourth embodiment (FIGS. 29 to 31). Here, the same reference numerals represent the same functions, and description thereof will be omitted as appropriate. In the present embodiment, the substrate 2 is made of resin. A receiving metal 16 having a punching groove 6 for receiving the punching blade 26 when punching the corrugated cardboard sheet 100 is fitted into the upper surface 2a side of the substrate 2 at a position facing the punching blade 26. ing. The groove width of the punching groove 6 is set to be the same as or slightly larger than the width (thickness) of the punching blade 26, and is set within a range in which the corrugated cardboard sheet 100 does not sink. The bracket 16 has a concave cross section and is made of a hard metal such as aluminum, iron, or stainless steel.

  Further, in the present embodiment, on the upper surface 2a side of the substrate 2, the first area surrounded by the ruled groove 103 is recessed at a predetermined depth, and a recess 17 having a flat bottom surface is formed. On the upper surface 2a side of the substrate 2, a second area surrounded by the punching groove 6 and the ruled groove 103 is recessed at a predetermined depth, and a recess 18 having a flat bottom surface is formed. In FIG. 29, four depressions 18 are formed, and one depression 17 is formed. These recesses 17 and 18 are formed by, for example, milling or router processing.

  32 is a view showing a state before punching out the cardboard sheet 100, FIG. 33 is a view showing a state when punching out the cardboard sheet 100, and FIG. 34 is a view showing a state after punching out the cardboard sheet 100. is there. Here, the protruding amount of the ruled member 25 is set smaller than the protruding amount of the punching blade 26. In the punching process, the corrugated cardboard sheet 100 is inserted between the punching die 22 and the receiving die 21 (FIG. 32), the punching die 22 and the receiving die 21 are brought close to each other, and the restoring force of the rubber member 27 is used. The crease 102b is applied while cutting the cardboard sheet 100 while pressing it to the extent that the cardboard sheet 100 is not displaced (FIG. 33). At this time, the line pressed by the punching blade 26 of the corrugated cardboard sheet 100 is cut, but according to the present embodiment, the punching groove 6 has a structure that allows the cutting edge of the punching blade 26 to escape. 1. The punching blade 26 does not need to be brought into contact with the punching blade 1 and is cut while pressing the outer portion of the corrugated cardboard sheet 100 so as not to move between the face plate 1 and the rubber member 27 arranged outside the punching blade 26. Becomes easy. At this time, the line pushed by the ruled member 25 of the corrugated cardboard sheet 100 is escaped by the ruled groove 103 to become a convex line 102a. At this time, the surface of the corrugated cardboard sheet 100 facing the area is not crushed by the recess 17 located in the first area and the recess 18 located in the second area. Further, the substrate side wall in the first area (indentation 17) is formed with an inclination 15 whose thickness decreases toward the inside over the entire circumference, and the substrate side wall in the second area (indentation 18) is entirely on the substrate side wall. Since the slopes 14 are formed so that the thickness decreases toward the inside over the circumference, near the both sides of the cut portion of the cardboard sheet 100 and near both sides of the convex line 102a on the opposite side of the folding line 102b of the cardboard sheet 100. Indentation is difficult to stick. Then, after punching out the cardboard sheet 100, the punching die 22 and the receiving die 21 are separated, and the cardboard sheet 100 is dropped from the punching blade 26 or the ruled member 25 using the restoring force of the rubber member 27 (FIG. 34). ).

  Examples of the material of the substrate 2 include synthetic resins such as ABS, PBT, PPS, phenol resin, polyethylene, polypropylene, and polycarbonate, metals such as aluminum and stainless steel, and composite materials combining these synthetic resins and metals. It is done. Here, the synthetic resin substrate 2 is used for ease of processing. In the present embodiment, since the surface plate 1 is a single surface plate, it is easy to ensure the strength required for the surface plate 1 when punching the cardboard sheet 100 and applying the crease 102b.

(Sixth embodiment)
The face plate 1 of the sixth embodiment of the present invention is a single face plate composed of the plate-like substrate 2 as in the above-described embodiment (FIGS. 35 to 37). Here, the same reference numerals represent the same functions, and description thereof will be omitted as appropriate. In the present embodiment, the substrate 2 is made of a hard metal such as aluminum, iron, or stainless steel. In the example shown in FIG. 35, two positioning through holes 105 are formed at predetermined intervals in an area surrounded by the ruled grooves 103 of the substrate 2.

  38 is a view showing a state before punching out the cardboard sheet 100, FIG. 39 is a view showing a state when punching out the cardboard sheet 100, and FIG. 40 is a view showing a state after punching out the cardboard sheet 100. is there. At the time of punching, the corrugated cardboard sheet 100 is inserted between the punching die 22 and the receiving die 21 (FIG. 38), the punching die 22 and the receiving die 21 are brought close to each other, and the crease 102b is applied while cutting. (FIG. 39). At this time, the line pushed by the saw blade 262 of the corrugated cardboard sheet 100 is cut, but according to the present embodiment, the punching groove 6 has a structure that allows the cutting edge of the saw blade 262 to escape. It is not necessary to make the saw blade 262 contact, and the surface plate 1 and an elastic member such as a rubber member 27 disposed outside the saw blade 262 are cut while pressing the outer portion of the cardboard sheet 100 so as not to move. Becomes easy. Then, after punching out the cardboard sheet 100, the punching mold 22 and the receiving mold 21 are separated, and the cardboard sheet 100 is dropped from the saw blade 262 using the restoring force of an elastic member such as the rubber member 27 (FIG. 40).

  In the above-described embodiment, the area (third area) surrounded by the outer peripheral position of the upper surface 2a of the substrate 2 and the punching groove 6 is described as being flat. In order to prevent the sheet 100 from being crushed, a depression (third depression) that is depressed at a predetermined depth is formed, and the third depression allows the third area to be formed even in the vicinity of the outside of the sheet 100. The lower surface 2b of the face plate 1 is stable with the upper surface 21a of the counter plate 21 in as wide an area as possible so as not to crush the opposing surface of the sheet 100 and to minimize problems such as surface layer cracking of the sheet 100. Or a plurality of face plates 1 connected to form a single face plate, or a multi-layer structure in which a plurality of face plates 1 are stacked and bonded together. Thus, it goes without saying that the present invention can be modified as appropriate without departing from the spirit of the present invention.

1 version,
2 substrates,
103 Ruled groove,
4 Through window (second area),
5 through window (first area),
6 Punching groove,
17 depression (second area),
18 depression (first area),
21 Receiving type (counter plate),
22 punching dies,
25 Ruled material,
26 punching blade,
27 Rubber member,
100 sheets (cardboard sheets),
102a Convex line (or concave line),
102b folding line

In the punching process, the sheet 100 is inserted between the punching die 22 mounted on the upper side of the punching machine 19 and the receiving die 21 on the lower side of the punching machine 19 so that the punching die 22 and the receiving die 21 are brought close to each other. Next, they are isolated and punched (see FIG. 50 ). That is, while cutting into a predetermined shape with the punching blade 26, a plurality of crease lines 101 b are engraved in a required portion by the ruler member 25 to form a blank (punched sheet) 100. Next, valley folding is performed along the crease line 101b of the blank 100, and a paper container is assembled by fixing the tape or pasting a paste margin.

In the present invention, when punching a corrugated cardboard sheet as a paper container and providing a crease, it is preferable that the face plate is a single face plate.

Claims (11)

  A punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet and a punching die and a receiving die for receiving the sheet are attached to form an outer shape of a paper container. The sheet is punched and used to attach a folding line to the receiving mold, and is provided with a substrate having a ruled groove for applying a folding line to the sheet at a position facing the ruled member. A surface plate, wherein an area surrounded by the ruled groove on the substrate is recessed or penetrated at a predetermined depth so as not to crush the sheet in the area. Edition.   The face plate according to claim 1, wherein a punching groove for receiving the punching blade from which a sheet is punched is formed at a position on the substrate facing the punching blade.   A punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet and a punching die and a receiving die for receiving the sheet are attached to form an outer shape of a paper container. A substrate that is used by being attached to the receiving mold when punching a sheet and giving a crease, and having a ruled groove for giving a crease to the sheet is provided at a position facing the ruler member. A surface plate, wherein a punching groove for receiving the punching blade from which a sheet has been punched is formed at a position opposite to the punching blade on the substrate. .   A first area surrounded by the ruled groove on the substrate and a second area surrounded by the punching blade and the ruled groove on the substrate are the first area. 4. The surface plate according to claim 1, wherein the sheet is depressed or penetrated at a predetermined depth so as not to crush the sheet in the second area.   5. The surface plate according to claim 1, wherein the substrate side wall in the area is formed with an inclination that decreases in thickness toward the inside over the entire circumference.   The sheet punching die according to any one of claims 1 to 5, wherein when the corrugated cardboard sheet serving as one paper container is punched and a crease is provided, the face plate is a single face plate. The face plate.   A punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet, and a punching machine to which the punching die and a receiving mold for receiving the sheet are attached, are relative to the stamping member. A ruled groove for giving a crease line to the sheet is formed at a position where the sheet is formed, and an area surrounded by the ruled groove on the substrate is predetermined so as not to crush the sheet in the area. A slab that is recessed or penetrated in depth is used attached to the receiving mold, and the sheet is punched out to form the outer shape of the paper container while preventing the sheet from being crushed in the area, and a crease is provided. A sheet punching method characterized by the above.   A punching groove for receiving the punching blade from which a sheet is punched is formed at a position on the substrate facing the punching blade, and the punching blade is used as the punching groove. The sheet punching method according to claim 7, wherein the sheet is punched so as to have an outer shape of the paper container while being received and a crease is provided.   A punching machine in which a punching die for punching a sheet and a stamping member for imparting a crease to the sheet, and a punching machine to which the punching die and a receiving mold for receiving the sheet are attached, are relative to the stamping member. A ruled groove for giving a folding line to the sheet is formed at a position where the sheet is to be punched, and the punching blade for punching the sheet is received at a position opposite to the punching blade on the substrate. A surface plate in which a punching groove is formed is attached to the receiving mold and used, and the sheet is punched out to form the outer shape of the paper container while receiving the punching blade in the punching groove and a crease is given. A sheet punching method characterized by the above.   The punching blade is a saw blade, and rubber members are arranged on the inside and outside of the saw blade, and when the sheet is punched and a crease is provided, the rubber member holds the sheet so as not to be displaced. 10. The sheet punching method according to claim 8, wherein the sheet is punched by the saw blade. The area surrounded by the ruled groove on the substrate is a first area, and the second area surrounded by the ruled groove and the position on the substrate facing the punching blade is: Where the sheet is recessed or penetrated at a predetermined depth so as not to crush the sheet in the second area, when the sheet is punched and a crease is provided, the sheet faces in these areas The sheet punching method according to claim 7 or 9, wherein the pressing force is reduced or no pressing force is applied.

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