WO2012001827A1 - 打抜き刃およびケース形成用の打抜きブランク - Google Patents
打抜き刃およびケース形成用の打抜きブランク Download PDFInfo
- Publication number
- WO2012001827A1 WO2012001827A1 PCT/JP2010/069327 JP2010069327W WO2012001827A1 WO 2012001827 A1 WO2012001827 A1 WO 2012001827A1 JP 2010069327 W JP2010069327 W JP 2010069327W WO 2012001827 A1 WO2012001827 A1 WO 2012001827A1
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- WIPO (PCT)
- Prior art keywords
- wave
- blade
- plate
- pitch
- curvature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
- B65D5/0227—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed by inward folding of flaps and securing them by heat-sealing, by applying adhesive to the flaps or by staples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B50/142—Cutting, e.g. perforating, punching, slitting or trimming using presses or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4472—Cutting edge section features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2110/00—Shape of rigid or semi-rigid containers
- B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
- B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/25—Surface scoring
- B31B50/252—Surface scoring using presses or dies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4766—Orbital motion of cutting blade
- Y10T83/4795—Rotary tool
- Y10T83/4801—With undulant cutting edge [e.g., "pinking" tool]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
Definitions
- the present invention relates to a punching blade for punching a sheet such as a cardboard sheet or a paperboard into a predetermined shape, and a punching blank for forming a case.
- a multipack in which a plurality of packaging objects such as cans and bottles filled with drinking water such as beer are packed together is usually packaged in a wrap round case K shown in FIG. Further, the wrap round case K is brought into an assembled state by bending and bonding a blank formed by punching a corrugated cardboard sheet.
- FIG. 9 shows a blank B as a material for forming the wrap round case K.
- this blank B two pairs of side plates 1 and 2 having different width dimensions are alternately arranged in one direction through vertical ruled lines a, and the vertical ruled lines are formed on the side edges of the narrow side plate 1 located on one side.
- a passage piece 3 is connected through a, a pair of narrow side plates 1 are connected to both ends of each of the pair of narrow side plates 1 via a horizontal ruled line b, and the remaining pair of a pair of wide side plates 2 is connected.
- the outer flap 5 is connected to both ends via a horizontal ruled line b.
- a square is formed by a pair of side plates 1 and the remaining one set of side plates 2 by folding along the vertical ruled line a as shown in FIG.
- the inner flap 4 and the outer flap 5 are bent inward, and the inner flap 4.
- the opening of both ends of the cylinder 6 is sealed by adhering the overlapping portion of the outer flap 5 and a plurality of multipacks P are stored inside the cylinder 6 before the one opening of the cylinder 6 is sealed.
- Reference numeral 7 denotes an adhesive that bonds the overlapping portion of the inner flap 4 and the outer flap 5.
- the outer flap 5 and the inner flap 4 that are located above are often opened from the end surface where they overlap. At that time, a hand is put on the edge of the outer flap 5 and the outer outer flap 5 is peeled off from the inner inner flap 4.
- a punching die 22 is provided on the lower surface of the upper die 21 that can be moved up and down with respect to the face plate 20 made of stainless steel.
- the cardboard sheet S supported by the face plate 20 is punched with a punching blade 23 attached to the lower surface of the punching die 22.
- a punching blade whose cutting edge is linear as described in Patent Document 1 or a punching blade whose cutting edge is corrugated as described in Patent Document 2 is generally used. Adopted.
- the cutting blade is straight and sharp, and also in the punching blade described in patent document 2, the blade part is corrugated. Since the cutting edge is relatively sharp with a large curvature radius, the cutting edge on the outer periphery of the blank B formed by punching also becomes sharp, and the outer flap 5 of the wrap round case K There is a risk of injury to the hand due to contact with the edge 5a at the time of opening when the edge 5a is put on and peeled off from the inner flap 4. There is also a risk of injury from touching other edges.
- Japanese Patent Application Laid-Open No. 2008-44664 sets a reference line parallel to the edge of the outer flap, intersects with a plurality of ruled lines orthogonal to the reference line.
- a corrugated cardboard case has been proposed in which a plurality of crease lines are arranged in a lattice pattern and a crushed portion is formed to a position away from the edge of a rigid cardboard.
- An object of the present invention is to provide a punching blade capable of obtaining a smooth punching / cutting line that is less likely to be injured even if a hand touches a sheet such as a corrugated cardboard sheet or a paperboard, and an outer punching / cutting edge. It is an object of the present invention to provide a punched blank made of a sheet such as a corrugated cardboard sheet or a paperboard, which can form a case that is less likely to be injured by contact with the sheet.
- the punching blade in order to solve the above-described problems, a pair of strips having a substantially same inclination angle on the same side portion of both side surfaces of a strip-shaped blade plate of a certain length made of a steel plate.
- the cutting blade is a thin wave blade that undulates in the direction of both sides of the blade plate within the thickness range of the blade plate
- the fine wave blade is a composite wave blade with a large wave blade that undulates in the direction of both sides of the blade plate over the length direction, and a configuration in which multiple wave peaks of the fine wave blade are provided for each peak of the large wave blade is adopted.
- each of the fine wave blade and the large wave blade may be a sinusoidal wave blade with a constant pitch and wave width, or may have a curved shape with an irregular pitch and width. May be.
- the large wave blade may be wavy in the thickness range of the blade plate in the direction of the both sides of the blade plate, and a wave line is formed only in the chamfered portion, or the blade plate It may be made into a wavy shape in which a wave line in the height direction enters the entire both side surfaces.
- a strip-shaped steel plate having a thickness of 0.45 mm to 1.8 mm is used as the blade plate.
- the pitch, wave width, and curvature radius of the large wave blade and the fine wave blade are set to the following ranges, respectively. This is preferable for the prevention of injuries at the cutting line of the sheet and the composite wave blade.
- the pitch P 1 , wave width W 1, and wave mountain radius of curvature r of the fine wave blade are appropriately determined according to the pitch P 4 , wave width W 2, and wave radius of curvature R of the wave blade. A plurality of wave peaks of the fine wave blade are provided.
- the blank for forming a case according to the present invention has two pairs of opposing pair of side plates that form a square cylindrical body, and each of the edges of the pair of side plates.
- an inner flap is continuously provided
- an outer flap is continuously provided on each end edge of the pair of side plates, and the outer flap is attached to the inner flap to seal the opening of the cylinder.
- a fine wave curve in which peaks and troughs alternately and continuously wave at a small pitch and A complex wave line of a large wave curve in which peaks and valleys that are formed on the basis of the fine wave curve alternately and continuously wave at a pitch larger than the fine wave curve.
- a plurality of mountains is the employing the configuration as provided.
- the pitch of the peak of the thin wave curve is P 3
- the height of the peak is H 3
- the radius of curvature of the peak is r 3
- the pitch of the peak of the large wave curve is P 4
- the height of the peak is H 4
- the curvature radius of the mountain is R 4
- P 3 0.2 mm to 2.0 mm
- H 3 0.02 mm to 0.5 mm
- r 3 0.2 mm to 1.5 mm
- P 4 2.0 mm
- H 4 0.1 mm to 1.2 mm
- R 4 2.0 mm to 6.0 mm.
- a cutting blade of a punching blade for punching a sheet such as a corrugated cardboard sheet or paperboard, a fine wave blade that undulates in the direction of both sides of the blade plate within the thickness range of the blade plate, and the thin wave blade As a composite wave blade consisting of a large wave blade that undulates in the direction of both sides of the blade plate over the length direction, a plurality of fine wave blades are provided per large wave blade. Therefore, since the punching / cutting line has a wave shape in which peaks and valleys are formed by fine waves, it is possible to obtain a punching / cutting line that is soft to the touch and does not cause a smooth injury. For this reason, among the outer peripheral edges of the blank for forming the case, at least the outer peripheral edge of the outer flap is a cutting line punched by the above-described sheet punching blade according to the present invention. Can be mentioned.
- the cutting blade a composite wave blade of a fine wave blade and a large wave blade, it is possible to suppress the formation of slender whisker-like debris in the intermediate paper that is stepped when punching the corrugated cardboard sheet, Furthermore, by making the large wave blade swell within the thickness range of the blade plate, it maintains the straight strip state except for the blade part of the blade plate, and when the punching blade is attached to the punching die, the punching It is only necessary to form a straight mounting groove in the mold, and the groove processing can be facilitated and the mounting thereof is simple.
- a large wave blade whose entire side surfaces of the blade plate are wavy is easier to manufacture than a large wave blade in which only a part of it is wavy, and the portion of the blade plate attached to the punching die is also wavy. Therefore, the blade plate can be firmly attached to the punching die.
- (1A) is a perspective view showing an embodiment of a sheet punching blade according to the present invention
- (1B) is a perspective view showing an enlarged part of (1A).
- (2A), (2C), and (2E) are plan views showing stepwise the formation state of the sheet punching blade shown in FIG. 1, and (2B), (2D), and (2F) are (2A), (2C), respectively. ), (2E) cross-sectional view.
- the top view which shows other embodiment of the sheet punching blade which concerns on this invention.
- the cross-sectional view which shows the other example of a blade board.
- FIG. 2 is a plan view showing a part of a sheet punched by the sheet punching blade shown in FIG. 1.
- (8A) and (8B) are plan views showing stepwise the formation state of the sheet punching blade shown in FIG.
- (11A) is a longitudinal sectional view showing a punching device
- (11B) is a longitudinal sectional view showing a punched state of a sheet.
- the blade plate 10 is made of a strip-shaped steel plate having a certain length, and the height is H and the thickness (plate thickness) is T. , H is about 23.5 mm, and T is in the range of 0.45 mm to 1.8 mm.
- a pair of chamfers 11 that are inclined in opposite directions are formed on one side in the vertical direction on both side surfaces of the blade plate 10.
- the pair of chamfers 11 have substantially the same inclination angle ⁇ , and a cutting blade 12 is provided on one side edge of the blade plate 10 by forming the pair of chamfers 11.
- the cutting blade 12 is in the height direction in the direction of both sides of the blade plate over the length direction within the thickness range of the blade plate 10. It is a fine wave blade 12a that bends in a wavy shape in which wave crests are formed so as to be undulated and alternately arranged at the tops of a plurality of wave crests in opposite directions, and the fine wave blade 12a is within the thickness range of the blade plate 10.
- FIG. 2 (2C) smaller than as shown in (2E), the wave width W 2 between the top of the wave crests opposite one another adjacent the wave width W 1 between the top portion adjacent the ripples blade 12a of the large wave edge 12b
- the wave width W 1 may be larger than the wave width W 2 or may be the same.
- the cutting blade 12 having the above-described configuration is formed through the following first to third steps.
- First step as shown in FIGS. 2 (2A) and 2B, in the first step, a chamfer 11 that is inclined in a direction opposite to the same side portion in the vertical direction on both side surfaces of the blade plate 10 is formed.
- the straight blade 12c is formed over the length direction on substantially the width center line of the blade plate 10.
- Second step As shown in FIGS. 2 (2C) and 2D, the straight blade 12c formed in the first step is formed into a sinusoidal shape with a small curvature radius r by press molding using a corrugated template.
- the entire fine wave blade 12a formed in the second step is formed by press molding using a corrugated template with a radius of curvature R larger than that of the fine wave blade 12a.
- the fine wave blade 12a is provided so that a plurality of wave peaks of the fine wave blade 12a formed so as to be waved small per one peak of the large wave blade 12b formed so as to be waved greatly are provided over the length direction thereof.
- pitch P 1 of is set smaller than the pitch P 2 of the tidal wave blade 12b.
- the pitch P 2 , the wave width W 2, and the wave radius of curvature R of the large wave blade 12 b are appropriately determined according to the plate thickness (thickness) of the blade plate 10.
- Table 1 shows specific examples.
- the pitch P 1 , the wave width W 1 and the wave radius of curvature r of the fine wave blade 12a are appropriately determined according to the thickness of the blade plate 10, the pitch P 2 of the large wave blade 12b, the wave width W 2 and the radius of curvature R. Table 1 shows specific examples.
- the cutting edge 12 by a more complex wave blade consisting of a larger pitch P 2 of the tidal wave edge 12b and ripples blade 12a of the smaller pitch P 1, the composite wave blade Ilsan per large wave edge 12b A plurality of wave peaks of the thin wave blade 12a are provided over the length direction, and a structure in which a plurality of small waves are arranged on a large wave is obtained.
- the peak of the large wave blade 12b refers to the wave mountain of the large wave blade 12b disposed on one side of the reference line with the width center line CL of the blade plate 10 as the reference line. This is the curved part.
- the punching blade shown in the embodiment has the above structure, and when the punching blade is attached to the punching die 22 shown in FIG. 11 and the sheet S supported on the face plate 20 is punched, the sheet S is shown in FIG. As shown, a punching cutting line L made of a composite wave line corresponding to the shape of the composite wave blade made up of the fine wave blade 12a and the large wave blade 12b shown in FIG. 2 (2E) is formed.
- the cutting line L corresponds to the shape of a wave crest that is alternately reversed in the thin wave blade 12a, and a wave curve having a shape in which the peaks 14 and the valleys 15 are alternately and continuously waved, and the wave wave 12b is alternately reversed in the reverse direction.
- This is a composite wave line composed of a large wave curve in which peaks 16 and valleys 17 alternately and continuously undulate corresponding to the shape of the wave mountain. Its pitch P 3 of the pile 14 in ripples curve, a pitch of in the range of 0.2 mm ⁇ 2.0 mm Preferred examples valleys 15 are also the same.
- the height of the crest 14 (corresponding to the wave width W 1 of the fine wave blade 12a) H 3 is in the range of 0.02 mm to 0.5 mm, and the depth of the valley 15 is the same.
- the radius of curvature r 3 of the crest 14 (corresponding to the radius of curvature r of the wave of the thin wave blade 2a) is in the range of 0.2 mm to 1.5 mm, and the radius of curvature of the valley 15 is also the same.
- the pitch P 4 of the mountain 16 in the large wave curve, a pitch of in the range of 2.0 mm ⁇ 10.0 mm Preferred examples valleys 17 are also the same.
- the height of the mountain 16 (corresponding to the wave width W 2 of the tidal wave blade 12b) H 4, the depth of a range of 0.1 mm ⁇ 1.2 mm trough 17 is also the same. Furthermore, the radius of curvature R 4 of the peak 16 (corresponding to the radius of curvature R of the wave) is in the range of 2.0 mm to 6.0 mm, and the curvature radius of the valley 17 is also the same.
- the touch of the hand becomes extremely smooth, and there is no injury when touched.
- the cutting edge 12 has the same shape as the fine wave curve and the large wave curve.
- the cutting blade 12 for punching the sheet S is a composite wave blade of a fine wave blade 12a and a large wave blade 12b formed by bending the fine wave blade 12a into a wave shape over the entire length in the length direction. At the time of punching and cutting, it is possible to suppress the formation of long paper scraps in the shape of a whisker, especially in the case where the corrugated cardboard sheet is step-formed.
- the entire outer peripheral edge that is the outline may be a cutting line L of a composite wave line composed of a thin wave curve and a large wave curve, or Only the outer peripheral edge of the flap may be a cutting line L of a composite wave line composed of a thin wave curve and a large wave curve.
- each of the fine wave blade 12a and the large wave blade 12b has a pitch P 1 , P 2 , wave widths W 1 , W 2 and a wave radius of curvature r
- the cutting blade 12 has a regular sine wave shape with a constant R, as shown in FIG. 3, the cutting blade 12 is disposed on both sides of the blade plate 10 over the length direction within the thickness range of the blade plate 10.
- the fine wave blade 12a is bent so as to be undulated in which the tops of a plurality of wave peaks opposite to each other in the surface direction are arranged.
- the cutting blade 12 is a composite wave blade composed of a large wave blade 12b that is bent so as to be waved with a plurality of wave crests alternately arranged in reverse directions
- the fine wave blade 12a and the large wave blade 12b have a different pitch and wave width. Regular It may be wavy.
- one of the fine wave blade 12a and the large wave blade 12b may have a wave shape with a regular pitch and wave width, and the other may have a wave shape with an irregular pitch and wave width.
- the large wave blade 12b is formed with the entire fine wave blade 12a as a reference to form a composite wave blade.
- the pitch of the fine wave blades 12a is smaller than the pitch of the large wave blades 12b, and a plurality of crests of the fine wave blades 12a are provided along the length direction per one crest of the large wave blade 12b.
- each of the fine wave blade 12a and the large wave blade 12b is caused to wave within the thickness range of the blade plate 10.
- 7 and FIG. 8 (8A), (8B) only the fine wave blade 12a forms a wave streak in the height direction within the thickness range of the blade plate 10, and a small wave is struck.
- the blade 12b is made to swell greatly in the length direction in the blade plate 10 itself so that the waviness in the height direction enters the entire side surfaces of the blade plate 10, so that the large wave blade 12b per one mountain.
- a plurality of peaks of the fine wave blade 12a may be provided.
- the fine wave blade 12a is formed within the thickness range of the blade plate 10 at the intersection of the pair of chamfers 11 formed on the blade plate 10, and FIG. As shown in FIG. 2, the entire blade plate 10 may be press-molded in a wavy shape over the entire length.
- the large wave blade 12b can be formed so as to wave the entire blade plate 10 over its length direction. It is simpler than forming only undulating. Since the portion of the blade plate 10 attached to the punching die 22 is also wavy, the blade plate 10 is firmly attached to the punching die 22 in a solid state.
- the chamfer 11 formed in the same side part of the up-down direction of both sides was shown as the blade board 10 consisting of a single inclined surface, the chamfer 11 is not limited to this.
- two inclined surfaces 11 a and 11 b having different inclination angles may be sequentially continued from the blade edge side.
- the blank B made of corrugated cardboard sheets for forming the wrap round case K has been described as an example, but the case forming material and the case are not limited thereto.
- it may be a packaging box made of paperboard.
- the punching blade attached to the punching die of the flat plate punching apparatus has been described as an example.
- the punching blade is not limited to the flat plate type.
- it may be an arcuate punching blade C attached to an arcuate punching die of a rotary punching device.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Making Paper Articles (AREA)
Abstract
Description
第1工程;図2(2A)、(2B)に示すように、第1工程において、刃板10の両側面における上下方向の同一側部に相反する方向に傾斜する面取り11を形成して、刃板10のほぼ幅中心線上に直線刃12cを長さ方向にわたって形成する。
第2工程;図2(2C)、(2D)に示すように、第1工程により形成された直線刃12cを波形型板を用いるプレス成形により小さな曲率半径rでもって正弦曲線状に成形して、刃板10の厚さTの範囲内でその長さ方向にわたって刃板両側面方向に波打つ交互に逆向きの波山の隣接する頂部間の波幅W1を有する細波刃12aを形成する。
第3工程;図2(2E)、(2F)に示すように、第2工程によって形成された細波刃12aの全体を波形型板を用いるプレス成形により上記細波刃12aより大きな曲率半径Rでもって正弦曲線状に成形して、刃板10の厚さTの範囲内でその長さ方向にわたって刃板両側面方向に波打つ交互に逆向きの波山の隣接する頂部間の波幅W2を有する大波刃12bを細波刃12aの全体を基準として形成することによって、複合波刃となる。なお、同図に示す13は、波形型板のプレス跡を示す。
11 面取り
12 切り刃
12a 細波刃
12b 大波刃
Claims (11)
- 鋼板からなる一定の長さの帯板状の刃板における両側面の同一側部に、傾斜角をほぼ同一とする一対の面取りを形成して、前記刃板の一側縁に切り刃を設けたシート打抜き刃において、
前記切り刃が、刃板の厚さの範囲内で刃板両側面方向に小さく波打つ細波刃と、その細波刃が長さ方向にわたって刃板両側面方向に大きく波打つ大波刃との複合波刃とされて、大波刃の一山当たりに細波刃の複数の波山が設けられていることを特徴とするシート打抜き刃。 - 前記大波刃が、前記刃板の厚さの範囲内で刃板両側面方向に波打って前記面取り部にのみ波筋が形成される波状とされた請求項1に記載のシート打抜き刃。
- 前記大波刃が、前記刃板の両側面の全体に高さ方向の波筋が形成される波状とされた請求項1に記載のシート打抜き刃。
- 前記大波刃および細波刃のそれぞれが、ピッチ、波幅および波山の曲率半径が一定の正弦曲線の波状とされ、前記大波刃のピッチP2、波幅W2および波山の曲率半径Rが、P2=2.0mm~10.0mm、W2=0.1mm~1.2mm、R=2.0mm~6.0mmの範囲とされ請求項1乃至3のいずれかの項に記載のシート打抜き刃。
- 前記刃板の厚さが略0.7mmの場合において、大波刃のピッチP2、波幅W2および波山の曲率半径Rが、P2=2.0mm~4.0mm、W2=0.1mm~0.4mm、R=3.0mm~5.0mmの範囲とされ、細波刃のピッチP1、波幅W1および波山の曲率半径rが、P1=0.4mm~0.8mm、W1=0.04mm~0.1mm、r=0.3mm~0.5mmとされた請求項4に記載のシート打抜き刃。
- 前記刃板の厚さが略0.9mmの場合において、大波刃のピッチP2、波幅W2および波山の曲率半径Rが、P2=2.0mm~5.0mm、W2=0.1mm~0.6mm、R=3.0mm~5.0mmの範囲とされ、細波刃のピッチP1、波幅W1および波山の曲率半径rが、P1=0.6mm~1.2mm、W1=0.05mm~0.2mm、r=0.3mm~0.6mmとされた請求項4に記載のシート打抜き刃。
- 前記刃板の厚さが略1.07mmの場合において、大波刃のピッチP2、波幅W2および波山の曲率半径Rが、P2=3.0mm~6.0mm、W2=0.2mm~0.8mm、R=3.0mm~5.0mmの範囲とされ、細波刃のピッチP1、波幅W1および波山の曲率半径rが、P1=0.8mm~1.4mm、W1=0.08mm~0.3mm、r=0.3mm~1.0mmとされた請求項4に記載のシート打抜き刃。
- 前記大波刃および細波刃が、ピッチおよび波幅が刃板の長さ方向で不規則な曲線状とされた請求項1に記載のシート打抜き刃。
- 四角筒状の胴を形成する対向一対の側板を2組有し、1組の一対の側板の端縁それぞれに内フラップが連設され、残り1組の一対の側板の端縁それぞれに外フラップが連設され、前記内フラップに外フラップを貼り合せて胴の開口を封緘するケース形成用の打抜きブランクにおいて、
前記ブランクの外周縁のうち、少なくとも外フラップの外周縁が請求項1乃至8のいずれかの項に記載のシート打抜き刃によって打抜きされた切断線とされて、山と谷が交互に連続して小さく波打つ細波曲線と、山と谷が交互に連続して大きく波打つ大波曲線の複合波線からなることを特徴とする打抜きブランク。 - 前記細波曲線および前記大波曲線のそれぞれが、正弦曲線からなり、その細波曲線の山のピッチをP3、山の高さをH3、山の曲率半径をr3とし、かつ、大波曲線の山のピッチをP4、山の高さをH4、山の曲率半径をR4としたとき、P3=0.2mm~2.0mm、H3=0.02mm~0.5mm、r3=0.2mm~1.5mm、P4=2mm~10.0mm、H4=0.1mm~1.2mm、R4=2.0mm~6.0mmとされた請求項9に記載の打抜きブランク。
- 鋼板からなる一定の長さの帯板状の刃板における両側面の同一側部に、傾斜角をほぼ同一とする一対の面取りを形成して、前記刃板の一側縁に切り刃を設けたシート打抜き刃において、
前記切り刃が、請求項10に記載の細波曲線および大波曲線と同一形状とされていることを特徴とするシート打抜き刃。
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020127013384A KR101364305B1 (ko) | 2010-06-30 | 2010-10-29 | 펀칭날 및 케이스 형성용의 펀칭 블랭크 |
| EP10854124.4A EP2471637B1 (en) | 2010-06-30 | 2010-10-29 | Punching blade and punched blank for forming a case |
| US13/497,074 US9284087B2 (en) | 2010-06-30 | 2010-10-29 | Die-cutting blade and case-forming die-cut blank |
| CN201080048239.6A CN102574290B (zh) | 2010-06-30 | 2010-10-29 | 冲裁刀以及形成箱体用的冲裁坯料 |
| BR112012011115A BR112012011115A2 (pt) | 2010-06-30 | 2010-10-29 | lâmina de matriz de corte de chapa, e, peça bruta cortada com matriz de corte formando caixa |
| JP2011506268A JP4759100B1 (ja) | 2010-06-30 | 2010-10-29 | 打抜き刃およびケース形成用の打抜きブランク |
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| JP2010149022 | 2010-06-30 | ||
| JP2010-149022 | 2010-06-30 |
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| WO2012001827A1 true WO2012001827A1 (ja) | 2012-01-05 |
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| PCT/JP2010/069327 Ceased WO2012001827A1 (ja) | 2010-06-30 | 2010-10-29 | 打抜き刃およびケース形成用の打抜きブランク |
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| Country | Link |
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| US (1) | US9284087B2 (ja) |
| EP (1) | EP2471637B1 (ja) |
| KR (1) | KR101364305B1 (ja) |
| CN (1) | CN102574290B (ja) |
| BR (1) | BR112012011115A2 (ja) |
| WO (1) | WO2012001827A1 (ja) |
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| JP2022011183A (ja) * | 2020-06-29 | 2022-01-17 | 大王製紙株式会社 | 収納箱 |
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| KR101383336B1 (ko) * | 2013-06-11 | 2014-04-10 | 명동복 | 커팅용 금형 및 그 제조방법 |
| DE102013217842A1 (de) * | 2013-09-06 | 2015-03-12 | Karl Marbach Gmbh & Co. Kg | Verfahren zur Herstellung von Kleberitzungen bei Kartonagen |
| EP3235634A4 (en) * | 2014-12-17 | 2017-10-25 | Diepex Co., Ltd. | Creasing member, creasing template, and creasing device |
| JP6600554B2 (ja) * | 2015-12-28 | 2019-10-30 | 西川ゴム工業株式会社 | 波形シート材の裁断方法 |
| JP6495959B2 (ja) * | 2017-02-14 | 2019-04-03 | 株式会社東北田村工機 | 打抜き刃 |
| CN107186046B (zh) * | 2017-05-31 | 2020-05-15 | 苏州帝航防护设施有限公司 | 护栏或栅栏用方管的断料模具 |
| CN109909360A (zh) * | 2019-03-22 | 2019-06-21 | 东莞市瑞辉机械制造有限公司 | 一种具有弧状刃部的刀具 |
| DE102024121178A1 (de) * | 2024-07-25 | 2026-01-29 | Kiefel Gmbh | Verfahren und Formwerkzeug zum Einbringen mindestens einer Öffnung in einen Formkörper aus einem faserhaltigen Material und Formkörper |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2471637A4 (en) | 2015-09-30 |
| US20120181326A1 (en) | 2012-07-19 |
| CN102574290B (zh) | 2015-01-14 |
| CN102574290A (zh) | 2012-07-11 |
| BR112012011115A2 (pt) | 2016-07-05 |
| US9284087B2 (en) | 2016-03-15 |
| EP2471637B1 (en) | 2016-09-28 |
| KR20120068047A (ko) | 2012-06-26 |
| KR101364305B1 (ko) | 2014-02-18 |
| EP2471637A1 (en) | 2012-07-04 |
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