EP3345732B1 - Structure de coupe pour aider la courbure d'une feuille flexible à former un contour stéréoscopique - Google Patents

Structure de coupe pour aider la courbure d'une feuille flexible à former un contour stéréoscopique Download PDF

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Publication number
EP3345732B1
EP3345732B1 EP17207779.4A EP17207779A EP3345732B1 EP 3345732 B1 EP3345732 B1 EP 3345732B1 EP 17207779 A EP17207779 A EP 17207779A EP 3345732 B1 EP3345732 B1 EP 3345732B1
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EP
European Patent Office
Prior art keywords
cutting
flexible sheet
sections
section
projections
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EP17207779.4A
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German (de)
English (en)
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EP3345732A1 (fr
Inventor
Hwa-Yi Hsu
Cheng-Yu Tsai
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Classifications

    • 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
    • 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
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/22—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material to form non-rectilinear cuts, e.g. for tabs
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather
    • C14B5/02—Stamps or dies for leather articles
    • 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

Definitions

  • the present invention provides a cutting structure for assisting the curvature of a flexible sheet.
  • the cutting structure is formed at the corresponding position to allow the flexible sheet to bend into a stereoscopic contour.
  • a plurality of thread holes need to be prefabricated at a joint position of at least two pieces of leather, and then the threads are utilized to pass through the thread holes to fix the two pieces of leather.
  • an article of a complicated structure e.g., a handbag or a wallet
  • a plurality of pieces of leather is required and moreover, the sewing process consumes a lot of time.
  • the self-made leather goods cannot be manufactured within a short period of time, and it is hard for a non-professional artisan to enjoy making leather bags.
  • US 2004/0134250 A1 teaches that a sheet of material which can be bent along a bend line to form with bending strap-defining structure, wherein the slits are arranged at intervals to provide a fatigue-resistant structure to the sheet. It further discloses that each slit presents a longitudinal folding line and includes two ends. According to US 2004/0134250 A1 , the two ends of each slit are moving away from the bend line.
  • the present invention provides a special cutting structure to solve the aforesaid technical problems of a time consuming process, a required skill level and lengthy manufacturing process.
  • the invention is defined in claim 1, a sheet comprising a cutting structure.
  • the present invention provides a cutting structure to be formed on the bent position of a flexible sheet.
  • the cutting structure comprises two parallel cutting paths.
  • Each of the cutting paths has a plurality of cutting sections adjacently arranged at intervals to each other.
  • Each cutting section is of a liner shape to cut through the flexible sheet.
  • the cutting sections on one of the cutting paths are laterally offset with respect to the cutting sections on another cutting path. Two ends of the cutting sections of the two parallel cutting paths are oppositely interlaced without connecting
  • Each cutting section is projected to form a first cutting projection towards a first direction and a second cutting projection towards a second direction.
  • Two second cutting projections from any two oppositely interlaced cutting sections are partially overlapped, and the first direction is vertical to the second direction.
  • the flexible sheet can be formed into a stereoscopic contour by bending the bent position.
  • the cutting structure of the present invention can be widely applied to a leather material, a plastic material, a fabric material or a paper material.
  • the leather material in the form of a sheet can be formed into a stereoscopic article simply by bending these bent positions without the need of sewing skills and without using adhesive attachment.
  • FIG. 1 is a schematic view illustrating the sheet of the present invention.
  • a whole piece of flexible sheet 1 may first have a predetermined shape, and then the cutting structures 2 of the present invention are correspondingly formed on the bent portions.
  • the cutting structure of the present invention comprises two parallel cutting paths, and each of the cutting paths has a plurality of cutting sections adjacently arranged at intervals to each other.
  • FIG. 2A is a schematic view illustrating the arrangement of a first embodiment of the cutting structure according to the present invention.
  • the cutting structure 2 comprises a cutting path 20 and a cutting path 22 parallel to each other
  • the cutting path 20 has a plurality of cutting sections a1, a2, a3, a4, a5 ...(which can be collectively referred to herein as a "cutting section a" ) adjacently arranged at intervals to each other
  • the cutting path 22 also has a plurality of cutting sections b1, b2, b3, b4, b5 ...(which can be collectively referred to as a "cutting section b" ) adjacently arranged at intervals to each other.
  • Each of the cutting sections a, b has a liner shape to cut through the flexible sheet 1; this means that linear cutting lines running through the flexible sheet 1 in a vertical direction are generated in the flexible sheet 1 by
  • a feature of the cutting structure of the present invention lies in that the cutting sections on one of cutting paths are laterally offset with respect to the cutting sections on another cutting path.
  • the two ends of the cutting sections of the two parallel cutting paths are oppositely interlaced without connecting with each other. Specifically, as shown in FIG.
  • each of the cutting sections a, b has two ends P, the cutting sections a1, a2, a3, a4, a5 ...on the cutting path 20 are laterally offset with respect to the cutting sections b1, b2, b3, b4, b5 ...on another cutting path 22, the two ends P of each cutting section a are oppositely interlaced with the two ends P of each cutting section b, and the two ends P of each cutting section a are not connected with the two ends P of each cutting section b.
  • the cutting sections of a linear shape as shown in FIG. 2A , FIG. 3A , FIG. 4 and FIG. 5 may have different patterns. To describe the arrangement relationships between the two parallel cutting paths more clearly, projections will serve as the basis for defining positions and dimensional proportions of the cutting sections. Still in reference to FIG. 2A , the first direction X and second direction Y perpendicular to each other may be defined, and the first direction X refers to a direction parallel to the two cutting paths.
  • first cutting projections 23a, 23b which can be collectively referred to herein as the "first cutting projection 23"
  • second cutting projection 24a, 24b which can be collectively referred to herein as a "second cutting projection 24"
  • the two second cutting projections 24a, 24b generated from any two of oppositely interlaced cutting sections are only partially overlapping. Specifically, with reference to FIG. 2B , the two second cutting projections 24a, 24b generated from any two of the oppositely interlaced cutting sections (e.g., the cutting section a1 and the cutting section b1 ) are partially overlapping. It shall be appreciated that the case in where the second cutting projections 24a, 24b of the cutting section a1 and the cutting section b1 are completely overlapping is not the best implementation mode although it can be implemented.
  • the two first cutting projections 23a and 23b may also have another arrangement as shown in FIGs. 3A to 3B .
  • the two first cutting projections 23a, 23b from any two oppositely interlaced cutting sections a, b are not overlapping, i.e., the first cutting projections 23a, 23b are separated from each other by a distance, or the first cutting projection 23a is tangent to the first cutting projection 23b.
  • Both of the above cases fall within the scope that can be implemented by the present invention.
  • a good effect of assisting the bending cannot be obtained if the distance between the first cutting projection 23a and the first cutting projection 23b is too large.
  • each cutting section defines a pivot 25 which is projected towards the first direction X to form a first pivot projection 251 and towards the second direction Y to form a second pivot projection 252.
  • the distance between the two second pivot projections from any two of adjacent cutting sections on either of the cutting paths is preferably between 4mm to 40mm.
  • the second pivot projections at the cutting sections a1, a2, a3, a4, a5... are equally spaced by a distance T
  • the second pivot projections 252 at the cutting sections b1, b2, b3, b4, b5... are also equally spaced by the distance T.
  • the first distance between the two first pivot projections from two oppositely interlaced cutting sections is preferably between 2mm to 20mm
  • the second distance between the two second pivot projections from two oppositely interlaced cutting sections is preferably between 2mm to 20mm.
  • the first distance T1 between the two first pivot projections 251 from two oppositely interlaced cutting sections a1, b1 is between 2mm to 20mm
  • the second distance T2 between the two second pivot projections 252 from the two oppositely interlaced cutting sections a1, b1 is between 2mm to 20mm.
  • the second distance T2 is the lateral offset distance between the cutting sections a1, b1 .
  • the second cutting projection of one cutting section is oppositely interlaced with the second cutting projections of the other two cutting sections.
  • the second cutting projection of the cutting section a2 is oppositely interlaced with the second cutting projections of both the cutting sections b1, b2, or the cutting section b1 is oppositely interlaced with both of the cutting sections a1, a2.
  • each of the cutting sections a, b includes a first edge 211 and two non-parallel second edges 212 in which the two second edges 212 are respectively are not vertically connected with two sides of the first edge 211, and the two ends P of the cutting section are terminals of the two second edges 212.
  • each cutting section 31 includes a first edge 311 and two parallel second edges 312 in which the two second edges 312 are respectively connected with two sides of the first edge 311 vertically, and the two ends P of the cutting section are terminals of the two second edges 312.
  • the cutting section may have another pattern as shown in FIG. 5 , wherein the cutting section is an arc-shaped cutting section 41, and the two ends P of the cutting section are the terminals of the arc-shaped cutting section 41.
  • the cutting sections a1, a2, a3, a4, a5... and the cutting sections b1, b2, b3, b4, b5... mentioned in the above embodiments are of the same shape and size.
  • the different reference symbols used to represent the cutting sections are only for ease of description in the above embodiments.
  • the shapes of individual cutting sections in FIGs. 2A to 2B , FIGs. 3A to 3B and FIG. 4 may be the following: bilaterally symmetrical, i.e., the second edges of each cutting section are not parallel but are symmetrical (i.e., FIGs. 2A to 2B , FIGs. 3A to 3B ), parallel and symmetrical (i.e., FIG. 4 ), or symmetrically V-shaped (not shown).
  • the individual cutting sections may also have shapes that are not completely bilaterally symmetrical (not shown).
  • the first length of the first cutting projection and the second length of the second cutting projection serve as a unified basis for defining the depth and the width of the cutting sections because the cutting sections of the linear shape may have different patterns.
  • the depth of each of the cutting sections a, b corresponds to the first length D1 of the first cutting projections 23a, 23b and the first length is preferably between 1mm to 10mm.
  • the width of each of the cutting sections a, b corresponds to the second length D2 of the second cutting projections 24a, 24b and the second length is preferably between 3mm to 30mm.
  • the cutting structure 2 of the present invention can replace the conventional sewing process and adhesive attachment by assisting in bending the flexible sheet 1 into a stereoscopic article, wherein the flexible sheet 1 may be a leather material, a plastic material, a fabric material or a paper material.
  • front-end manufacturers prefabricate the cutting structures of the present invention on flat flexible sheets for mass production, and then the flexible sheets are sold to rear-end consumers to be assembled into stereoscopic structures by the consumers themselves.
  • the cutting structure of the present invention can vividly simulate the visual effect of thread sewing when it is applied to the leather material.
  • the manufacturer applies the cutting structure 2 of the present invention to a piece of leather material, and the cutting structure 2 is formed at each of the plurality of portions to be bent on the leather material.
  • the leather material can then be sold to the consumer on the rear-end so that the consumer can bend the bent positions of the leather material by hand to change the leather material into a stereoscopic wallet. Accordingly, the consumer does not need sewing skills, and he or she may easily make leather bags. Since the leather material is flexible, a water color pen, a writing brush, or a wet sponge may be used to first moisturize the cutting sections oppositely interlaced so that the leather material can be bent more flexibly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Toys (AREA)
  • Control Of Cutting Processes (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (10)

  1. Feuille souple comprenant une structure découpée (2) formée sur une position repliée de la feuille souple (1) pour faciliter la courbure de la feuille souple, la structure découpée comprenant :
    deux chemins découpés parallèles (20, 22), chacun des chemins découpés a une pluralité de sections découpées agencées de manière adjacente à des intervalles les unes par rapport aux autres, chaque section découpée est sous forme d'une doublure pour faire une coupure au travers de la feuille souple, les sections découpées (a1, a2, a3, a4, a5) sur un des chemins découpés (20) sont décalées latéralement par rapport aux sections découpées (b1, b2, b3, b4, b5) sur un autre chemin découpé (22), et deux extrémités (P) des sections découpées des deux chemins découpés parallèles (20, 22) sont entrelacées de manière opposée sans se connecter l'une à l'autre,
    où chaque section découpée est projetée pour former une première projection découpée (23a, 23b) dans une première direction (X) et une seconde projection découpée (24a, 24b) dans une seconde direction (Y), les deux secondes projections découpées (24a, 24b) à partir de deux sections découpées entrelacées de manière opposée quelconques sont partiellement superposées, et la première direction (X) est verticale par rapport à la seconde direction (Y).
  2. Feuille souple selon la revendication 1, dans laquelle les deux premières projections découpées (23a, 23b) à partir de deux sections découpées entrelacées de manière opposée quelconques ne sont pas superposées.
  3. Feuille souple selon la revendication 1, dans laquelle les deux premières projections découpées (23a, 23b) à partir de deux sections découpées entrelacées de manière opposée quelconques sont partiellement superposées.
  4. Feuille souple selon les revendications 1, 2 ou 3, dans laquelle chaque section découpée peut définir un pivot (25) qui est projeté dans la première direction (X) pour former une première projection de pivot (251) et dans la seconde direction (Y) pour former une seconde projection de pivot 252), et une distance (T) entre les deux secondes projections de pivots à partir de l'une quelconque de sections découpée adjacentes sur n'importe quel chemin découpé est de préférence entre 4 mm et 40 mm.
  5. Feuille souple selon la revendication 4, dans laquelle une première distance (T1) entre les deux premières projections de pivot (251) à partir de deux sections découpées entrelacées de manière opposée quelconques est de préférence entre 2 mm et 20 mm, et une seconde distance (T2) entre deux secondes projections de pivot (252) à partir de deux sections découpées entrelacées de manière opposées quelconque est de préférence entre 2 mm et 20 mm.
  6. Feuille souple selon les revendications 1, 2 ou 3, dans laquelle chaque section découpée sous forme de doublure comporte un premier bord (211) et deux seconds bords (212) non parallèles, où les deux seconds bords sont respectivement reliés avec deux côtés du premier bord (211) de manière non verticale, et les deux extrémités (P) de la section découpée sont des parties terminales des deux seconds bords.
  7. Feuille souple selon les revendications 1, 2 ou 3, dans laquelle chaque section découpée (31) sous forme de doublure comporte un premier bord (311) et deux seconds bords (312) parallèles, où les deux seconds bords (312) sont respectivement reliés avec deux côtés du premier bord (311) de manière verticale, et les deux extrémités (P) de la section découpée sont des parties terminales des deux seconds bords (312).
  8. Feuille souple selon les revendications 1, 2 ou 3, dans laquelle chaque section découpée sous forme de doublure est une section découpée en forme d'arc (41), et les deux extrémités (P) de la section découpée sont des parties terminales de la section découpée en forme d'arc (41).
  9. Feuille souple selon l'une quelconque des revendications 1 à 8, dans laquelle une profondeur de chaque section découpée correspond à une première longueur de la première projection découpée et la première longueur (D1) est de préférence entre 1 mm et 10 mm, et une largeur de chaque section découpée correspond à une seconde longueur (D2) de la seconde projection découpée et la seconde longueur est de préférence entre 3 mm et 30 mm.
  10. Feuille souple selon l'une quelconque des revendications 1 à 9, où la feuille souple peut être un matériau en cuir, un matériau plastique, un matériau en tissu ou un matériau en papier.
EP17207779.4A 2017-01-04 2017-12-15 Structure de coupe pour aider la courbure d'une feuille flexible à former un contour stéréoscopique Active EP3345732B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW106200077U TWM546894U (zh) 2017-01-04 2017-01-04 用於輔助一軟性片材的折彎以構成一立體型態之切割結構

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Publication Number Publication Date
EP3345732A1 EP3345732A1 (fr) 2018-07-11
EP3345732B1 true EP3345732B1 (fr) 2020-09-16

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EP17207779.4A Active EP3345732B1 (fr) 2017-01-04 2017-12-15 Structure de coupe pour aider la courbure d'une feuille flexible à former un contour stéréoscopique

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TW (1) TWM546894U (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5743164A (en) * 1996-03-01 1998-04-28 Guez; Allon Automatic reconfigurable die
US6877349B2 (en) * 2000-08-17 2005-04-12 Industrial Origami, Llc Method for precision bending of sheet of materials, slit sheets fabrication process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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EP3345732A1 (fr) 2018-07-11
TWM546894U (zh) 2017-08-11

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