EP0533064A2 - Fabrication de puzzles - Google Patents

Fabrication de puzzles Download PDF

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Publication number
EP0533064A2
EP0533064A2 EP92115555A EP92115555A EP0533064A2 EP 0533064 A2 EP0533064 A2 EP 0533064A2 EP 92115555 A EP92115555 A EP 92115555A EP 92115555 A EP92115555 A EP 92115555A EP 0533064 A2 EP0533064 A2 EP 0533064A2
Authority
EP
European Patent Office
Prior art keywords
pieces
tool
jigsaw
cutting
assembly
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.)
Granted
Application number
EP92115555A
Other languages
German (de)
English (en)
Other versions
EP0533064B1 (fr
EP0533064A3 (en
Inventor
Kenneth Charles Cooper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAMCO-STRONG Ltd
Original Assignee
SAMCO-STRONG Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAMCO-STRONG Ltd filed Critical SAMCO-STRONG Ltd
Publication of EP0533064A2 publication Critical patent/EP0533064A2/fr
Publication of EP0533064A3 publication Critical patent/EP0533064A3/en
Application granted granted Critical
Publication of EP0533064B1 publication Critical patent/EP0533064B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F9/00—Games not otherwise provided for
    • A63F9/06—Patience; Other games for self-amusement
    • A63F9/10—Two-dimensional jig-saw puzzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • 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
    • B26F2001/449—Cutters therefor; Dies therefor for shearing, e.g. with adjoining or abutting edges

Definitions

  • This invention is concerned with a method of manufacturing jigsaw puzzles wherein interlocking pieces thereof are cut out from a single sheet of material, a punch-and-die assembly for carrying out such method, and jigsaw puzzles made using such a method.
  • a cutting die is used of the type comprising a steel cutting blade which is formed to a desired configuration and is set in a wooden base, suitable ejectors, in the form of pads of resilient material, being arranged at opposite sides of the blade.
  • a separate die is used for cutting in a direction perpendicular to the first-mentioned direction.
  • This approach is advantageous in that the cutting pressure required for effecting each of the two cutting operations is substantially less than if a single cutting operation were effected for the complete puzzle, but this approach does not give rise to the risk that, because some work handling has to be effected between the two cutting operations, one strip of material may become detached from the remainder during such work handling, quite apart from the fact that two cutting operations are time-consuming and thus increase the overall cost of manufacture.
  • toggle presses In cutting jigsaw puzzles in this manner, conventionally so-called toggle presses have been used which comprise a steel cutting table between which and an upper platen relative movement of approach can take place under close control in order to ensure on the one hand that the material to be cut is cut through cleanly while on the other hand the blade of the cutting die is protected from being blunted by being pressed with too great a force against the steel cutting table.
  • a cutting die as described above, it is usually the case that a good deal of so-called make-ready is required, i.e. localised variation in the depth of the cutting die in order to ensure that the material is in fact cleanly cut but without damage to the cutting blade.
  • make-ready will require up to three or even four days by a skilled workman in the case of a large jigsaw. It will of course be appreciated that such use of a workman's time significantly increases the cost of tooling for a jigsaw puzzle.
  • a further disadvantage in using a cutting die of the aforementioned type is that the cut edges of the jigsaw pieces tend to be rounded at the surface which is penetrated by the cutting die, while there may be some tendency for burrs to be formed at the opposite surface.
  • the rounding of the cut edges as aforesaid tends to be highlighted when the jigsaw puzzle is assembled by the puzzler, which may be detrimental to the appearance of the finished puzzle.
  • it is desired to have a double-sided jigsaw puzzle firstly it is quite apparent to the puzzler which way up each pieces must be, since the surfaces have a quite different appearance, while secondly it is quite difficult to assemble the puzzle when attempting the puzzle on the reverse, i.e. non-rounded, surface. Unless, therefore, further work is carried out on the pieces, a jigsaw cut using a conventional cutting die cannot readily be assembled by a puzzler.
  • the invention thus provides, in one of its several aspects, a method of manufacturing jigsaw puzzles wherein interlocking pieces thereof are cut out from a single sheet of material in a single cutting stroke, characterised by using a punch-and-die assembly comprising upper and lower tools with cooperating lands and apertures, wherein adjacent pieces of the puzzle are cut out one by a land of the upper tool and a cooperating aperture of the lower tool and the other by a land of the lower tool and a cooperating aperture of the upper tool.
  • punch-and-die assemblies are well known in the metal-working industry, but in general they are not used in applications where the whole of the material which is "cut” thereby is then used, e.g. in the case of a jigsaw puzzle; rather, punch-and-die assemblies tend to be used in conditions where a workpiece is to be "cut” from a sheet of material, and thereafter the unwanted remnants of material, i.e. the scrap, must be separated from the cut piece and removed.
  • the "cut" achieved using a punch-and-die assembly is essentially straight-sided so that there is no rounding effect on one surface and no risk of burrs on the other and moreover the two surfaces have the same appearance and the cut edges on both surfaces have the same configuration so that the puzzle can be assembled from either side and double-sided puzzles can thus readily be produced without the puzzler being able to deduce from the shape of the cut edges which way up any particular piece should be.
  • each aperture of the upper and lower tools has an ejector piece therein which is urged by resilient means to an advanced position, in which its surface is flush with the surface of the lands adjacent thereto.
  • the resilient means may be in the form of a pad of resilient material, e.g. synthetic rubber, against which each ejector piece, or a rearward projection thereof, is pressed during the cutting operation and thus by which, following the cutting operation, the ejector piece is returned to its "flush" condition, while in the lower tool preferably a hydraulic or pneumatic cushion is provided, again acting similarly on the rearward portion or a projection thereof of each ejector piece.
  • the hydraulic or pneumatic cushion moreover, provides a counter-pressure during the closing together of the upper and lower tools, and this counter-pressure is found to be beneficial in preventing a splitting of the material being cut during the cutting operation, so that a clean shear can be achieved.
  • any suitable material from which jigsaw puzzles are currently made may be used, e.g. cardboard and plywood.
  • other materials may now be contemplated for use in the manufacture of jigsaw puzzles, which materials previously could not have been used because e.g. of a tendency to shatter when pressure is applied thereto through a cutting die.
  • the punch-and-die assembly used in carrying out the method in accordance with the present invention may be conventionally manufactured using known wire erosion techniques. It has been found that using a wire having a diameter of 0.1mm (0.004") produces an assembly by which a jigsaw puzzle having closely fitting pieces can be manufactured.
  • the invention thus further provides, in another of its several aspects, a punch-and-die assembly for cutting out jigsaw puzzles, characterised by upper and lower tools with cooperating lands and apertures so arranged that, when the assembly is in use, adjacent pieces of the jigsaw puzzle are cut out one by a land of the upper tool and a cooperating aperture of the lower tool and the other by a land of the lower tool and a cooperating aperture of the upper tool.
  • the invention further provides, in yet another of its several aspects, a jigsaw puzzle characterised in that the pieces of the puzzle are cut out using a method as set out above.
  • a jigsaw puzzle characterised in that the pieces of the puzzle are cut out using a method as set out above.
  • Such a jigsaw puzzle exhibits the various features referred to above, in particular cleanly cut edges and the ability of its individual pieces to be interlocked from either surface, which latter feature enables double-sided jigsaw puzzles to be readily produced as easily as single-sided ones.
  • the punch-and-die assembly shown in Figures 1 and 2 is designed for use in a conventional hydraulic beam press, the assembly being a separate unit which can be placed between the platens of such press.
  • the invention is however more broadly applicable, and it will be appreciated that alternative versions of the punch-and-die assembly may be designed which nevertheless will fall within this scope of protection of the present application.
  • the punch-and-die assembly shown in Figures 1 and 2 comprises an upper tool 10 and a lower tool 12.
  • Each of the tools 10,12 comprises a frame 14 mounted on a bolster 16 which in turn is carried on a base plate 18.
  • a plurality of lands 20, each of the lands 20 acting as a punch are Accommodated within the frame 14 of each tool 10,12 and secured to the bolster 16 thereof, with the arrangement being such that the lands 20 of the upper tool 10 are spaced from one another by apertures 22 which correspond with the lands 20 of the lower tool 12, and vice versa.
  • the lands 20 of both tools are cut from a single sheet of metal, e.g.
  • one suitable cutting process is constituted by a wire erosion technique using a wire of 0.1mm diameter (0.004").
  • a wire erosion technique using a wire of 0.1mm diameter (0.004").
  • the clearance between the lands 20 when properly located on their respective bolsters 16 is minimal.
  • a correspondingly shaped ejector piece 24 In each of the apertures 22, moreover, is accommodated a correspondingly shaped ejector piece 24; conveniently the ejector pieces 24 for the two tools 10,12 are also cut from a single sheet of tool steel, using a wire erosion technique as in the case of the lands 20.
  • Each ejector piece 24 is supported by a rearwardly projecting pin 26 having a rearward enlarged head 28 accommodated in a bush 30, itself accommodated in a suitable bore formed therefor in the bolster 16 and base plate 18.
  • Each pin 26 carries a spring 32 which acts between the rearward face of the ejector piece 24 and the bottom of the aperture 22 to urge the ejector piece 24 into a condition in which its surface lies flush with the surface of its adjacent lands 20, this position of each ejector piece 24 being determined by engagement of the enlarged head 28 with the forward end of its bush 30.
  • the bush 30 may be filled with a compressible rubber block which assists the spring 32 in maintaining the ejector piece 24 in its flush condition.
  • a bore 34 being a continuation, of reduced diameter, of the bore accommodating the bush 30 in the base plate 18, is provided thus to provide access to the rearward side of the head 28.
  • the base plate 18 of the lower tool 12 is provided with four location pins 36, one at each corner, which pins 36 engage in location apertures 38 formed in the base plate 18 of the upper tool 10.
  • the pins 36 are each provided with a compression spring 40 by which the upper and lower tools 10,12 are urged apart, the springs 40 being of course compressible to allow closure of the punch-and-die assembly during a cutting operation.
  • each land 20 serves to punch out a part of the finished workpiece, viz. a jigsaw puzzle, as opposed to the conventional use of such assemblies where it is more a matter of punching out desired pieces while the remainder of the sheet material is scrap.
  • the base plates 18 of the tools 10,12 may be dispensed with and the bolster 16 of each tool 10,12 be directly attached to a platen of the press, in which case the bushes 30 would be relatively shallow and the heads 28 of the pins 26 would lie flush with the rear face of the bolster 16 when the ejector piece 24 is in its flush condition, a pad of compressible rubber being interposed between the rear face of the bolster 16 and the press platen.
  • a so-called hydraulic or pneumatic die cushion may be provided; this is of conventional construction and comprises pins or the like which would then engage with the rear faces of the heads 28. The advantage of using such a die cushion will be discussed hereinafter.
  • a piece of cardboard or plywood having a desired illustration on one or both sides and being of the same external dimension as the internal dimension of the frame 14 is placed in the assembly in alignment with the surface of the lower tool 12 provided by the lands 20 and ejector pieces 24 thereof such that the piece does not overlap the frame 14.
  • the assembly is then placed between the platens of a beam press and the latter are closed thus firstly to compress the piece of material between the surfaces provided by the lands 20 and the ejector pieces 24.
  • the punch-and-die assembly shown in Figures 1 and 2 is relatively small being an assembly by which a jigsaw puzzle of some 48 pieces is to be manufactured, but clearly the principle can be applied to the manufacture of jigsaw puzzles of all conventional sizes which can be cut by a cutting die; that is to say, up to 3,000 pieces. Moreover, in comparison with the cutting operation using the punch-and-die assembly in accordance with the invention cuts the whole puzzle in a single cutting operation, as compared with the two-stage cutting process conventionally practised when using cutting dies.
  • jigsaw puzzles made using the aforementioned method and assembly demonstrate sharp cut edges and straight sides of cut without burrs or fractures, and in this way it is possible to assembly a jigsaw puzzle made using this method from either side, thereby facilitating the manufacture of double-sided jigsaw puzzles.
EP19920115555 1991-09-20 1992-09-11 Fabrication de puzzles Expired - Lifetime EP0533064B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9120087 1991-09-20
GB919120087A GB9120087D0 (en) 1991-09-20 1991-09-20 Manufacture of jigsaw puzzles

Publications (3)

Publication Number Publication Date
EP0533064A2 true EP0533064A2 (fr) 1993-03-24
EP0533064A3 EP0533064A3 (en) 1993-09-22
EP0533064B1 EP0533064B1 (fr) 1995-11-15

Family

ID=10701717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920115555 Expired - Lifetime EP0533064B1 (fr) 1991-09-20 1992-09-11 Fabrication de puzzles

Country Status (3)

Country Link
EP (1) EP0533064B1 (fr)
DE (1) DE69206090T2 (fr)
GB (1) GB9120087D0 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2070568A1 (fr) * 2007-12-14 2009-06-17 Christian Noël Guy Legrand Procédé de découpe des pièces d'un puzzle
JP2017080436A (ja) * 2016-12-09 2017-05-18 株式会社ゲートウェイアーチ 組立玩具及び組立玩具の製造方法
CN107097454A (zh) * 2017-05-12 2017-08-29 贵州鸿图彩印包装有限责任公司 酒盒生产用防尘式切纸机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115379A1 (de) 2021-06-14 2022-12-15 puzzleYOU GmbH Verfahren zur herstellung eines puzzles und vereinzelungseinrichtung hierfür

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385420A1 (fr) * 1977-03-28 1978-10-27 Bohbot Albert Nouveau jeu de societe
FR2443386A1 (fr) * 1978-12-09 1980-07-04 Applic Plastique Mec Elec Dispositif pour decouper a la matrice des recipients formes par emboutissage dans une bande thermoplastique
DE3303882A1 (de) * 1983-02-05 1984-08-09 Bruno 4052 Korschenbroich Wilbert Puzzle
FR2653350A1 (fr) * 1989-10-24 1991-04-26 Liu Ting Chih Procede pour realiser un puzzle d'image photographique.
US5019314A (en) * 1985-12-16 1991-05-28 Almetek Industries, Inc. Process for die cutting plastic sheets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385420A1 (fr) * 1977-03-28 1978-10-27 Bohbot Albert Nouveau jeu de societe
FR2443386A1 (fr) * 1978-12-09 1980-07-04 Applic Plastique Mec Elec Dispositif pour decouper a la matrice des recipients formes par emboutissage dans une bande thermoplastique
DE3303882A1 (de) * 1983-02-05 1984-08-09 Bruno 4052 Korschenbroich Wilbert Puzzle
US5019314A (en) * 1985-12-16 1991-05-28 Almetek Industries, Inc. Process for die cutting plastic sheets
FR2653350A1 (fr) * 1989-10-24 1991-04-26 Liu Ting Chih Procede pour realiser un puzzle d'image photographique.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2070568A1 (fr) * 2007-12-14 2009-06-17 Christian Noël Guy Legrand Procédé de découpe des pièces d'un puzzle
JP2017080436A (ja) * 2016-12-09 2017-05-18 株式会社ゲートウェイアーチ 組立玩具及び組立玩具の製造方法
CN107097454A (zh) * 2017-05-12 2017-08-29 贵州鸿图彩印包装有限责任公司 酒盒生产用防尘式切纸机
CN107097454B (zh) * 2017-05-12 2023-05-09 贵州鸿图彩印包装有限责任公司 酒盒生产用防尘式切纸机

Also Published As

Publication number Publication date
EP0533064B1 (fr) 1995-11-15
DE69206090T2 (de) 1996-04-18
EP0533064A3 (en) 1993-09-22
GB9120087D0 (en) 1991-11-06
DE69206090D1 (de) 1995-12-21

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