EP1392511B1 - Verlegungsvorrichtungen für spielmarke und tampondruckeinrichtungen mit diesen vorrichtungen - Google Patents

Verlegungsvorrichtungen für spielmarke und tampondruckeinrichtungen mit diesen vorrichtungen Download PDF

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Publication number
EP1392511B1
EP1392511B1 EP02738275A EP02738275A EP1392511B1 EP 1392511 B1 EP1392511 B1 EP 1392511B1 EP 02738275 A EP02738275 A EP 02738275A EP 02738275 A EP02738275 A EP 02738275A EP 1392511 B1 EP1392511 B1 EP 1392511B1
Authority
EP
European Patent Office
Prior art keywords
token
support
laying device
vacuum
seal
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.)
Expired - Lifetime
Application number
EP02738275A
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English (en)
French (fr)
Other versions
EP1392511A1 (de
Inventor
Michel Tollhupp
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.)
Gaming Partners International
Original Assignee
Gaming Partners International
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 Gaming Partners International filed Critical Gaming Partners International
Publication of EP1392511A1 publication Critical patent/EP1392511A1/de
Application granted granted Critical
Publication of EP1392511B1 publication Critical patent/EP1392511B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/20—Supports for workpieces with suction-operated elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/001—Pad printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/50—Printing presses for particular purposes

Definitions

  • the present invention relates to the marking by pad printing game table tokens in the general form of disc or objects of similar shape, and more particularly the maintenance of tokens during pad printing operations.
  • Gambling token also called casino token, means any element usable in the gaming room, especially on the gaming tables, and representing a predetermined nominal value or not. In general, these tokens are made of rigid plastic and scratch resistant.
  • Game table tokens are almost systematically decorated with markings on their faces and / or slices and, depending on the future use of chips, can go from the simplest to the most complex.
  • the patent FR 2.730.392 on behalf of the applicant describes the use of pad printing for the surface marking of the faces and / or edge of the chips (compared to the volume marking by multi-injection of plastics of different colors).
  • the published application WO 98/43816 in the name of the applicant describes a pad printing method for marking very precisely the faces and the perpendicular edge of a token and in particular to simultaneously mark a face and the edge of the token.
  • the demand WO 98/43816 describes a pad printing installation using a token laying device comprising an axial support with an end face intended to carry the token, the laying device being associated with means vacuum suction in steady state to maintain the token in direct or indirect support on the support.
  • vacuum suction means and / or “vacuum suction” are understood in their broadest sense and include any device capable of creating a partial vacuum of air or a vacuum in a pipe or chamber by suction of air and / or any similar device such as vacuum pump and other vacuum source.
  • a device for decorating objects comprising a movable support movable along a transport path through processing stations, the object support being connected, on at least a partial section of the trajectory, to a source vacuum by means of a vacuum duct that comprises that is connected to a vacuum duct arranged along the path by a connecting duct.
  • the invention proposes a laying device for token or plate, usable in particular in pad printing, comprising an axial support with an end face intended to carry said token, the device being adapted to be associated with means for suction for holding the token in direct or indirect support on the support, characterized in that the support comprises a vacuum chamber forming a passage and adapted to be connected to said vacuum suction means and opening through a central opening on said face of end and an elastomeric annular sealing gasket intended to cooperate with a face of the token and disposed on said end face around said opening, said end face of the support having a rigid peripheral ring intended to serve as a fixed support for the token, said elastomeric annular seal being disposed adjacent to the ring inside the latter, said seal at the repo s projecting slightly axially outside the crown to ensure a vacuum seal at the face of the chip in contact with the seal.
  • peripheral support ring extending in a plane perpendicular to the axis of the support gives a perfect seating and a constant axial position with respect to the pad printing pad, which allows pad printing slice with very high precision, including multichrom.
  • this laying device according to the second version can be integrated into a new pad printing system according to the invention wherein the support is mounted on a base movable on a frame placed in front of at least one pad printing station having an inked pad moved coaxially with said token in association with a plane stamp.
  • the figure 1 represents a sectional view of a device 30 for placing a plastic token 10 and intended by way of nonlimiting example to be incorporated in a pad printing installation for marking an ink and / or varnish decoration the faces and the perpendicular edge of the disc-shaped token 10 with circular parallel faces.
  • the laying device according to the invention which will be described in detail hereinafter, has the main functions of serving as a horizontal support for the token 10 and of keeping the latter in place, centered on the axis ZZ 'of the buffer 134, during the duration of the pad printing operations.
  • the token 10 in the form of a disk with parallel faces, used on tables of clearance has a diameter of 40 mm for a thickness or wafer height of the order of 3.3 mm, being noted that in some cases, the edges have a very slight chamfer (of the order of 0.1 mm ).
  • the token faces can be "granite" at the request of user casinos.
  • the game token is replaced by an object of similar shape made of a material capable of receiving a decoration by pad printing or by other known printing methods.
  • figure 3 illustrates the principle of such a pad printing device according to the invention for the simultaneous marking of one of the faces and the edge of a disc-shaped game token or an object of similar shape.
  • the reference 30 represents very schematically the token laying device according to the invention of the figure 1 .
  • An ink pad 134 is mounted on a vertical frame 131 so as to be movable in vertical reciprocating motions.
  • the vertical frame 131 is associated with the frame 60 carrying the laying device so as to align on the same axis ZZ ', the axis of the buffer 134 (and its head 136) and the axis of the laying device 30 carrying the token (the axis ZZ 'then passing through the center of the token 10).
  • the buffer 134 has a deformable head 136 with axial symmetry axis ZZ 'of synthetic material (for example a synthetic silicone rubber having a hardness Shore A of the order of 6), in this case conical end 138.
  • the deformable head 136 is adapted to wedge on the face 12 and the edge 16 of the token 10 during the marking of perpendicular wafer 14.
  • a plate carrier 140 carrying a planar ink plate 111 incorporating for example the image of a wafer decoration is capable of reciprocating movements between the vertical of buffer 134 (position 140) and the vertical of FIG. an ink tank 142 (position 140 ').
  • the actual pad printing operation is carried out as follows.
  • the plate holder After inking the plate 111 (position 140 '), the plate holder is moved to the position 140 coaxial with the pad 134 so as to have a crown-shaped area of the plate 111 carrying an image-decor coaxially with the pad 134.
  • a first downward vertical movement of the buffer 134 allows the ink to be recovered by simple pressure.
  • the buffer 134 undergoes a second downward vertical movement to deposit the ink by first pressing on the face 12 of the token 10 and then, by deformation more important of the head of the buffer 136 on the wafer 14. This is the marking of a decoration (final or intermediate) monochrome.
  • the final decoration is constituted by complementarity and / or superposition of monochrome decorations, each of these intermediate decorations being engraved on separate pictures.
  • Multichrome marking is used for several mobile plate holders or a series of monochrome pad printing units associated with a mobile token holder.
  • the inking plates are etched to a depth of between 18 and 20 ⁇ m.
  • the various types of inks and / or varnishes suitable for pad printing can be used, in particular UV-detectable inks for discrete markings. (eg for identification numbers and / or token coding).
  • the inside of the hollow cylinder of the support 32 defines the chamber 33 called the vacuum chamber forming a passage for the vacuum (in practice for the aspiration of air towards the vacuum suction means) and which can be connected by means of multiple valve means 50 to a vacuum line (dashed) 48 leading to a vacuum pump 58.
  • the multiple valve means 50 includes a through vacuum inlet sleeve 51 mounted through the wall of the cylindrical support 32 and a "non-leak" pneumatic connection assembly with two non-return valves comprising two separable tips 52 and 54, a connection and isolation connector 52 with non-return valve 81 connected to the vacuum chamber 33 by the sleeve 51 and a suction nozzle 54 with non-return valve 82 connected to the suction line 48 under vacuum.
  • the bodies 83 and 84 of the ends 52 and 54 of cylindrical shape are each traversed by a bore of axis XX '85 and 86, the two nonreturn valves 81 and 82 being mounted opposite in the closed position when the two tips are separated or disconnected.
  • the end piece 52 has a small-diameter head 87 capable of sliding, during the connection of the end pieces 52 and 54, in a portion 88, of substantially the same diameter, from the bore 86 to an abutment position (illustrated in FIG.
  • FIG 5c the two bores 85 and 86 are in free communication and the vacuum chamber 33 connected to the vacuum suction line 48 equipped with a pressure gauge 56 and leading to a vacuum pump 58.
  • the two valves 81 and 82 occupy their closed positions, it follows that the vacuum chamber 33 remains isolated from the vacuum pump and the free air and that the vacuum is maintained in the chamber 33 closed by the token 10.
  • the closure of any communication between the chamber 33 at the intake sleeve 51 corresponds to the isolation status of the vacuum chamber 33.
  • the operator wishes to release the token by venting the air. room, he just to push the valve 81 axially slightly into the bore 85 by manually or automatically pressing on the head 89 to the left of the figure 1 .
  • the pump 58 is suitably fixed to the frame 60 carrying a transfer path 62 on which a plurality of laying devices 30 carrying the tokens to be stamped move, the bases 36 being equipped with pads.
  • Each laying device 30 is movable in front of the pad printing station of the figure 3 by precise displacement of its base 36 on the transfer path 62 so as to align the axis of the laying device and thereby the center of the token 10 with the axis ZZ 'of the buffer 136.
  • a variant of the laying device 30 carries instead of the end pieces 52 and 54 a three-way valve (not shown) capable of isolating the vacuum chamber 33 by closing of the path leading to the chamber or to connect the chamber 33, either to the vacuum suction means 58 or to a venting port.
  • a three-way valve capable of isolating the vacuum chamber 33 by closing of the path leading to the chamber or to connect the chamber 33, either to the vacuum suction means 58 or to a venting port.
  • annular sealing seal 40 it may be made of elastomeric material chosen from synthetic or natural rubbers, polyurethanes and silicones.
  • a silicone seal with a hardness of about 6 in the Shore A scale (substantially the same hardness as that of the head of the buffer 138).
  • a ring-shaped O-ring could be suitable.
  • it is often preferable to improve the seal with the token especially when the flatness of the token faces is imperfect or "granite" to use more or less thick washers with flat faces.
  • This solution was chosen in the laying device 30 illustrated in FIGS. Figures 1, 2a and 2b describing a preferred embodiment of the invention.
  • the thickness H of the washer 40 is chosen to protrude from the shoulder 39 at rest with a height h of the order of one millimeter.
  • the washer 40 is crushed until coming from the face 13 of the token bearing on the ring 41 as shown in FIG. figure 2b .
  • the precise choice of the value h to the nearest tenth of a millimeter is determined so as to allow sealing with the token and the support of the token 10 on the ring 41 and to obtain a force of support due to the vacuum much higher than the reaction force of the washer 40 in the compressed state.
  • One of the advantages provided by the laying device 30 according to the invention is that it is possible to isolate the vacuum chamber 33 by closing the multiple valve 50 once the required partial vacuum level has been reached (for example 50%), species by disconnecting the laying device 30 of the vacuum suction line 48 by a simple separation of the tips 52 and 54.
  • a minimum internal volume of a few tens of cm 3 for the vacuum chamber 33 tests have shown that it was possible to maintain an operational vacuum to firmly hold the token 10 on the laying device for a duration of more than one hour.
  • h is chosen as the overflow height which allows the longest vacuum storage time, the other data of the system being kept equal.
  • a plurality of laying devices 30 are placed on the transfer path 62, most often forming a loop.
  • the operator places the token 10 in the opening of the ring bearing on the elastomer washer 40 ( figure 2a ) the token then being centered with respect to the vertical axis ZZ 'of the laying device.
  • the operator then connects the two ends 52 and 54 and empties into the chamber 33. In a few seconds the washer 40 crushes and the token 10 comes to rest firmly on the crown 41 ( figure 2b ).
  • the operator disconnects the two end pieces 52, 54 and isolates the vacuum chamber 33 (this operation can be done manually or automatically).
  • the device 30 can then be moved to the first pad printing station with respect to a rail portion 70 'in the low position (in fact the control rail of the ring 44 is always in a low position along the path loop 62 with the exception of the locations corresponding to the positions of laying / removal), the ring 44 is then retracted and the edge 14 of the token 10 available to be marked with the first face 12 of the token.
  • the token is centered on the axis ZZ 'of the buffer by positioning the base 36 so as to align the axis of the buffer 134 and the axis of the laying device 30.
  • This centering operation prior to the actual marking (or initial phase of the marking) is important to properly position the token 10 with respect to the buffer 134, especially in this case so that the edge 16 corresponds well with its image inked on the conical end 138 of the buffer 134.
  • the head 138 of the buffer 134 After passing through the end conical 138 of the plane of the face 12 (the latter possibly being completely marked), the head 138 of the buffer 134 is deformed along the edge 14 by settling on the edge 16 (the latter being sharp enough to prevent slipping undesirable from the face 12 at the edge) until the total inking of the wafer 14 when the end 138 (conical at rest) of the deformable head 136 of the buffer 134 is compressed (with a slight exceeding of edge of the t is 136 beyond the plane of the edge 17 of the underside 13 of the token 10).
  • the support force created by the vacuum on the token 10 is sufficient to prevent it from slipping laterally when marking and / or lifting during 134.
  • the base 36 is then moved to the next pad printing station until the end of the marking of the decor that can be face alone, slice alone or face slice.
  • the token 10 then passes in front of a laying / removal station where the token is turned over with venting of the chamber 33, the token is turned upside down, the chamber 33 is emptied, the chamber 33 is isolated. and moving to the pad printing stations assigned to the other face 13 of the token. If the token 10 returns to the station of installation / removal of origin for venting and removal of the token.
  • the laying device 30 and the associated pad printing installation incorporate the greatest number of technical characteristics (elastomer washer with parallel faces, bearing ring, vacuum chamber isolation). with or without physical disconnection between the laying device and vacuum suction) intended to meet the most difficult conditions of use (slice marking, "granite” faces, optimization of the resource in the vacuum, supply of the chamber intermittent vacuum etc.).
  • the invention also relates to simplified variants of the laying device 30 illustrated in FIG. figure 1 .
  • the laying device remains very close to the device 30 described above: only the crown of support 41 is eliminated, the lower part of the elastomer washer being placed in a groove in the enlarged portion 38 instead of the shoulder 39 and the axial positioning of the face of the Token during pad printing being done by crushing the elastomer washer.
  • the laying device is in accordance with the device 30 with the exception of the multiple valve means which are replaced by a fixed and permanent connection between the vacuum chamber and the vacuum suction, the quality of the seal at the token level allowing the pad printing operation in good conditions but with a slightly more expensive installation.
  • the laying device for token or plate usable in particular in pad printing, comprising the axial support 32 with an end face 29 intended to carry said token 10, the device being adapted to be associated with suction means under vacuum opening on said end face to hold the token in direct or indirect support on the support, is characterized in that said end face 29 of the support comprises the rigid peripheral ring 41 intended to serve as a fixed support to the chip and the elastomeric annular seal 40 adjacent to the ring inside the latter and disposed around the mouth of the vacuum suction (in this case the central opening 31), said seal 40 at rest projecting slightly axially outside the ring to ensure a vacuum seal at the face 13 of the token in contact with the seal 40.

Claims (7)

  1. Haltevorrichtung (30) für Jetons (10) oder Platten, welche insbesondere für den Tampondruck einsetzbar ist, mit einer axialen Stütze (32), die eine Endfläche (29) aufweist, welche zum Tragen des Jetons (10) vorgesehen ist, wobei die Vorrichtung zum Verbinden mit Vakuum-Saugeinrichtungen (58) geeignet ist, um den Jeton (10) in direkter oder indirekter Anlage auf der Stütze (32) zu halten, dadurch gekennzeichnet, dass die Stütze (32) eine Vakuumkammer (33), welche einen Durchlass bildet und mit den Vakuum-Saugeinrichtungen verbindbar ist und über eine mittige Öffnung (32) an der Endfläche (23) mündet, und eine Elastomer-Ringdichtung (40) aufweist, welche zum Zusammenwirken mit einer Seite (13) des Jetons vorgesehen und um die Öffnung (31) herum auf der Endfläche (29) angeordnet ist, wobei die Endfläche (29) der Stütze einen starren Umfangskranz (41) aufweist, welcher als festes Widerlager des Jetons (10) dient, wobei die Elastomer-Ringdichtung (40) im Inneren des Kranzes (41) dem Kranz (41) benachbart angeordnet ist, wobei die Dichtung (40) in Ruhestellung geringfügig in axialer Richtung aus dem Kranz (41) ragt, um die Vakuumdichtheit an der die Dichtung berührenden Seite (13) des Jetons (10) zu gewährleisten.
  2. Haltevorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Dichtung (40) aus einem Elastomermaterial gebildet ist, welches unter synthetischem oder natürlichem Kautschuk, Polyurethanen und Silikonen ausgewählt ist.
  3. Haltevorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Dichtung (40) eine Scheibe mit ebenen Flächen ist.
  4. Haltevorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Stütze (32) nahe ihrer Endfläche Jeton-Zentriereinrichtungen (42, 44) aufweist, die in der ausgefahrenen Position über den Lagerkranz (41) hinausragen und axial absenkbar sind.
  5. Haltevorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Zentriereinrichtungen aus einem Zentrierring (44), welcher mit einer auf der axialen Stütze gleitend verschiebbaren Hülse (42) fest verbunden ist, und elastischen Einrichtungen (46) bestehen, welche den Ring in die ausgefahrene Position vorspannen.
  6. Haltevorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Stütze (32) auf einem Sockel (36) montiert ist, welcher auf einem Gestell (60) verfahrbar ist, das vor mindestens einer Tampographiestation mit einem Farbstempel (134) angeordnet ist, welcher zusammen mit einem flachen Farbklischee (111) koaxial zu dem Jeton (10) verschoben wird.
  7. Tampographieanlage des Typs mit mindestens einer Tampographiestation mit einem Farbstempel (134), welcher zusammen mit einem flachen Farbklischee (111) koaxial zu dem Jeton (10) verschoben wird, und mindestens einer Haltevorrichtung (30) nach Anspruch 6, dadurch gekennzeichnet, dass sie Vakuum-Saugeinrichtungen (58) und mindestens eine Halte-/ Ablagevorrichtung aufweist, welche in einer auf dem Gestell (60) vorgesehenen Übergabebahn (62) montiert ist.
EP02738275A 2001-06-06 2002-05-21 Verlegungsvorrichtungen für spielmarke und tampondruckeinrichtungen mit diesen vorrichtungen Expired - Lifetime EP1392511B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0107347A FR2825661B1 (fr) 2001-06-06 2001-06-06 Dispositif de pose pour jeton et installations de tampographie incorporant de tels dispositifs
FR0107347 2001-06-06
PCT/FR2002/001692 WO2002098663A1 (fr) 2001-06-06 2002-05-21 Dispositifs de pose pour jeton et installations de tampographie incorporant de tels dispositifs

Publications (2)

Publication Number Publication Date
EP1392511A1 EP1392511A1 (de) 2004-03-03
EP1392511B1 true EP1392511B1 (de) 2010-03-10

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EP02738275A Expired - Lifetime EP1392511B1 (de) 2001-06-06 2002-05-21 Verlegungsvorrichtungen für spielmarke und tampondruckeinrichtungen mit diesen vorrichtungen

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Country Link
US (1) US7100501B2 (de)
EP (1) EP1392511B1 (de)
AT (1) ATE460280T1 (de)
AU (1) AU2002313078B2 (de)
CA (1) CA2447142C (de)
DE (1) DE60235623D1 (de)
FR (1) FR2825661B1 (de)
NZ (1) NZ529581A (de)
WO (1) WO2002098663A1 (de)
ZA (1) ZA200301804B (de)

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Also Published As

Publication number Publication date
FR2825661A1 (fr) 2002-12-13
DE60235623D1 (de) 2010-04-22
CA2447142A1 (fr) 2002-12-12
EP1392511A1 (de) 2004-03-03
AU2002313078B2 (en) 2006-03-30
NZ529581A (en) 2004-07-30
WO2002098663A1 (fr) 2002-12-12
CA2447142C (fr) 2010-01-05
US20020185019A1 (en) 2002-12-12
FR2825661B1 (fr) 2006-11-24
ATE460280T1 (de) 2010-03-15
US7100501B2 (en) 2006-09-05
ZA200301804B (en) 2004-03-05

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