EP2619011B1 - Machine d'estampage comprenant une presse a platines - Google Patents

Machine d'estampage comprenant une presse a platines Download PDF

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Publication number
EP2619011B1
EP2619011B1 EP11758411.0A EP11758411A EP2619011B1 EP 2619011 B1 EP2619011 B1 EP 2619011B1 EP 11758411 A EP11758411 A EP 11758411A EP 2619011 B1 EP2619011 B1 EP 2619011B1
Authority
EP
European Patent Office
Prior art keywords
stamping
platen
cam
machine
articulated
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.)
Active
Application number
EP11758411.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2619011A1 (fr
Inventor
Christophe De Gaillande
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.)
Bobst Mex SA
Original Assignee
Bobst Mex SA
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 Bobst Mex SA filed Critical Bobst Mex SA
Priority to EP11758411.0A priority Critical patent/EP2619011B1/fr
Publication of EP2619011A1 publication Critical patent/EP2619011A1/fr
Application granted granted Critical
Publication of EP2619011B1 publication Critical patent/EP2619011B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/26—Details
    • B41F1/54—Printing-pressure control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/064—Presses of the reciprocating type
    • B41F19/068—Presses of the reciprocating type motor-driven
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/16—Cam means
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/18—Toggle-link means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/10—Driving devices for the reciprocating die
    • B41P2219/13—Gearings
    • B41P2219/132—Cams or eccentrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/10—Driving devices for the reciprocating die
    • B41P2219/13—Gearings
    • B41P2219/134—Knee-lever

Definitions

  • the present invention relates to a stamping machine comprising a platen press.
  • a standard platen press the stamping takes place between a fixed platen extending horizontally, and a platen movably mounted in displacement in a vertical reciprocating motion.
  • This type of press being generally automated, means of transport are provided to bring one by one each sheet between the plates. In practice, it is usually a series of gripper bars, each of which in turn seizes a sheet at its front edge, before pulling it between the two plates of the press when the latter are sufficiently apart .
  • a stamping strip is schematically composed of a polyester-type support film, on which a pigmented layer is secured by means of a layer of wax. The outer face of this pigmented layer is coated with a hot melt adhesive layer.
  • the diet of the press Punching tapes are traditionally automated, in this case by means of a drive system able to unroll and circulate each of said tapes along a well defined travel path, which passes in particular through the platen press.
  • a tape drive system combines a series of cross bars that are located all along the scroll path to guide the tape movement, with several advance trees positioned downstream of said scroll path for respectively driving each of said bands in displacement.
  • stamping is carried out on specialized automatic machines.
  • machine construction There are different types of machine construction, the most common of which are vertical platen presses that work with vertical back and forth motion, cylinder presses and rotary presses.
  • the invention relates exclusively to the field of machines operating with a platen press.
  • the movement back and forth is printed on the movable plate by a set of members forming knee and commonly called knee joint cooperating with a drive mechanism type crankshaft and connecting rods.
  • the crankshaft describes a rotary movement
  • the knee pads move back and forth to the movable stage.
  • the stamping force is obtained by vertically displacing the movable plate and its movement mechanism, by means of adjustment keys, with respect to a vertical position in which is flush with the surface of the fixed plate.
  • a displacement of a few tenths of a millimeter is enough to precisely adjust the stamping force which can be considerable.
  • this displacement is between one tenth of a millimeter and less than three millimeters.
  • the stamping force contributes to the regular adhesion of the stamping sheet to the substrate. If the stamping force is too weak, the bond between the substrate and the deposit does not provide sufficient scratch resistance. It may even happen that the deposit is not attached to the substrate, or that there is no removal. Conversely, if the stamping force is too high, stamping too deep may occur, with a deterioration of the substrate that may lead to breakage by cutting, or a deterioration of the deposit or both. For example when using metallized strips, there is frequently a loss of the brightness of the varnish deposit when the stamping force is too high. Nevertheless, for the users of these machines, the stamping force that the machine can support is the essential characteristic of the machine.
  • Temperature is another crucial parameter to obtain a good quality of removal.
  • the temperature is generally between 90 ° C and 130 ° C and it provides a dual function. Its first function is to soften the layer of wax that binds the layer or layers to be deposited (for example a metallized layer and a layer of pigmented varnish) to the polyester strip. The temperature must therefore be higher than the melting point of the wax.
  • the second function of the temperature is to activate the sticky adhesive which will ensure the connection between the support and the deposit.
  • Different formulations are adapted to different media. For example, for a paper or cardboard support, the adhesive contains polymers compatible with cellulose. For a polypropylene support, it will be composed of polymers compatible with polypropylene. The larger the amount of adhesive, the stronger the bonding.
  • the document US 2004/0103799 describes a main drive mechanism in a platen press for cutting and gilding.
  • the mechanism includes a base, a movable platen, and four sets forming knee pads.
  • Four rollers present at the knee joint cooperate with four sets of cams of a drive shaft.
  • the technical problem to be solved by the object of the present invention is to provide a stamping machine with a platen press that allow to achieve higher rates than existing machines.
  • the present invention also relates to advantageous optional features which will become apparent in the course of the description which follows, and which will have to be considered in isolation or according to their technical combinations defined by the dependent claim 2.
  • the Figure 1 represents a printing machine 1 which is intended for the customization of cardboard packaging for the luxury industry.
  • this printing machine 1 is conventionally composed of several work stations 100, 200, 300, 400, 500 which are juxtaposed but interdependent one by one to form a unitary unit able to process a succession of supports leaf-shaped.
  • a transport device 600 is also provided for moving each sheet individually from the output of the margin table 200 to the receiving station 500, including through the stamping station 300.
  • the feeder 100 is supplied by means of a succession of pallets on each of which are stacked a plurality of cardboard sheets. The latter are successively removed from the top of the stack by a gripping member which transports them to the margin table 200 directly adjacent.
  • the sheets are laid by the gripping member, that is to say placed one after the other so as to overlap partially.
  • the entire web is then moved along a platen toward the embossing station 300 by means of a belt conveyor mechanism.
  • the head sheet is systematically positioned accurately, for example by means of front and side cleats.
  • the workstation located immediately after the margin table 200 is therefore the stamping station 300.
  • the latter has the function of depositing on each sheet, by hot stamping, the film which is issued from a stamping strip 410. It uses for this a platen press 310 within which the stamping operation operates classically between a heated upper plate 320 which is fixed, and a bottom plate 330 which is mounted movably in displacement in a back and forth vertical movement.
  • the tape feed and recovery station 400 Downstream of the stamping station 300 is the tape feed and recovery station 400. As the name suggests, this station plays a dual role since it is responsible for ensuring both the feeding the machine belt stamping 410, and the evacuation of the same band once it used.
  • the strip 410 is conventionally stored in a wound form, around a supply reel 420 rotatably mounted. After passing through the platen press 310, the band 410 is evacuated by a recovery device 430.
  • the process of processing the sheets in the printing machine 1 is completed in the receiving station 500 whose main function is to repackage the previously treated sheets.
  • the transport device 600 is arranged to automatically release each sheet when the latter is found at the right of this new battery. The sheet then falls squarely on the top of the stack.
  • the transport device 600 implements a series of gripper bars 610 which are movably mounted in transverse translation by means of two feed trains.
  • chain 620 arranged laterally on each side of the stamping machine 1.
  • Each chain train 620 traverses a loop which allows the gripper bars 610 to follow a path passing successively through the stamping station 300, the feed station and 400 and the receiving station 500.
  • the movable stage 330 is supported by several articulated members forming a toggle joint 340.
  • Each articulated organ forming a toggle joint 340 is composed of two segments: one has an end rotatably mounted relative to the movable stage, the other segment at one end rotatably mounted. relative to a support carried by an adjustment key.
  • the other two end segments are articulated relative to each other via an axis; around which is also articulated a connecting rod 350 connected to the crankshaft 360.
  • the adjustment keys 370 are in the shape of a wedge, and can move in translation. The movement of a key 370 causes a displacement. vertical of the articulated member forming the toggle joint 340 that it supports, as well as the movable plate 330. The stamping force is precisely adjusted thanks to these keys 370.
  • the Figures 2a and 2b show in more detail the principle of operation of the mechanism that prints the movement back and forth to the movable plate 330 in the platen press 310 of a stamping machine according to the prior art.
  • the Figure 2a represents the position of the articulated members forming the toggle joint 340 and connecting rods 350 when the movable stage 330 is in the low position.
  • the Figure 2b represents the position of these same members when the movable plate 330 is in the high position.
  • Figures 3a and 3b represent the operating principle of the mechanism that prints the movement, back and forth to the movable plate 330 in the platen press 310 of a stamping machine according to the invention.
  • the Figure 3a represents the position of the articulated members forming the toggle joint 340 when the movable stage 330 is in the low position.
  • the Figure 3b represents the position of these same members when the movable plate 330 is in the high position.
  • the stamping machine according to the invention does not include a crankshaft or rods as the stamping machine according to the prior art.
  • it comprises a camshaft 380 carrying at least one cam 385 per articulated member forming a toggle joint 340.
  • a cam 385 is a mechanical member that renders a movement synchronously with the rotational movement of the cam shaft 380 which carries it.
  • the cam 385 is, in a conventional manner, a cylinder of variable radius between a minimum radius and a maximum radius and the restored movement is defined by its outer profile.
  • each articulated member forming a toggle joint 340 comprises a connecting member 390 which cooperates with a cam 385 carried by the camshaft 380.
  • the linking member 390 will restore the movement corresponding to this outer profile, and the articulated member forming the toggle joint 340 will print a reciprocating movement to the movable plate 330.
  • the Figure 4 represents the curve of positions occupied by the movable platen 330 during a back-and-forth movement, which also corresponds to a machine cycle, for a machine according to the prior art with the curve C1 and for a machine according to the invention with the curve C2.
  • the curves C1 and C2 of the Figure 4 correspond to the positions of the plate when there is no contact with the fixed plate 320 but a simple outcrop of the work surfaces. In both cases, the stamping force is zero. The flush with the fixed platen occurs in the upper parts of the two curves C1 and C2.
  • the stamping force will be substantially constant throughout the period of contact between the movable plate 330 and the fixed plate 320.
  • the machines according to the invention can perform work at a high rate, applying a much lower stamping force.
  • the stamping force decreases between 20% and 50%, with an average greater than 35% relative to the maximum stamping force applied by a machine according to the prior art.
  • the proportion increases to more than 90% with a machine according to the invention.
  • the pace increases between 10% and more than 65%, with an average of about 40%. The importance of the invention is measured in terms of increasing the productivity of the machines.
  • Figure 4 highlights another advantage provided by the invention.
  • the movable plate 330 makes a significant displacement when it moves away from the fixed plate 320.
  • the mobile plate 330 requires more free space to perform its movement of movement. back and forth and, above all, because of this important displacement of strong turbulences appear at high rates and these turbulences can disturb the behavior of the elements in the form of sheets and bands to be stamped.
  • the lower displacements effected by the mobile stage 330 of a machine according to the invention make it possible to greatly reduce this turbulence at a very high rate.
  • a machine according to the invention comprises four articulated members forming knee pad 340.
  • the Figure 5 is a camshaft 380 adapted for this preferred embodiment, with four cams 385 forming two pairs, intended to cooperate with the four connecting members 390 of the four articulated members toggle 340.
  • each cam 385 has a sector of at least 5 ° radius substantially equal to the maximum radius of the cam.
  • the maximum radius of the cam corresponds to the most taut position of the articulated members forming toggles 340, therefore to the highest stamping force.
  • This sector therefore makes it possible to have a substantially constant stamping force.
  • this sector is at least 25 °, which reduces the stamping force applied, giving a significant application time.
  • the invention relates to any stamping machine 1 comprising a platen press 310, as defined by claim 1.
  • the movable platen 330. can perfectly be the upper platen, and the fixed platen 320 platinum lower.
  • the plates do not necessarily have to be positioned horizontally, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Press Drives And Press Lines (AREA)
  • Printing Methods (AREA)
  • Handling Of Sheets (AREA)
  • Control Of Cutting Processes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP11758411.0A 2010-09-22 2011-09-21 Machine d'estampage comprenant une presse a platines Active EP2619011B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11758411.0A EP2619011B1 (fr) 2010-09-22 2011-09-21 Machine d'estampage comprenant une presse a platines

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10010182 2010-09-22
EP11758411.0A EP2619011B1 (fr) 2010-09-22 2011-09-21 Machine d'estampage comprenant une presse a platines
PCT/EP2011/004725 WO2012038079A1 (fr) 2010-09-22 2011-09-21 Machine d'estampage comprenant une presse a platines

Publications (2)

Publication Number Publication Date
EP2619011A1 EP2619011A1 (fr) 2013-07-31
EP2619011B1 true EP2619011B1 (fr) 2014-07-23

Family

ID=43416355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11758411.0A Active EP2619011B1 (fr) 2010-09-22 2011-09-21 Machine d'estampage comprenant une presse a platines

Country Status (9)

Country Link
US (1) US9352524B2 (zh)
EP (1) EP2619011B1 (zh)
JP (1) JP5830786B2 (zh)
KR (1) KR101536833B1 (zh)
CN (1) CN103118873B (zh)
BR (1) BR112013005553B1 (zh)
ES (1) ES2496445T3 (zh)
TW (1) TWI515120B (zh)
WO (1) WO2012038079A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103481656B (zh) * 2013-07-26 2015-12-09 北京印刷学院 一种模切烫金机动平台驱动装置
CN103465619B (zh) * 2013-07-26 2015-06-24 北京印刷学院 一种平压平自动模切烫金机动平台凸轮驱动装置
CN108099401B (zh) * 2016-06-28 2019-05-10 杭州恒达印刷包装有限公司 一种便于供墨的纸板压印装置
CN107914457A (zh) * 2016-06-28 2018-04-17 海宁酷彩数码科技有限公司 改良的自动纸板压印机
CN106183403B (zh) * 2016-06-28 2018-05-08 平湖市三鑫纸塑有限公司 一种改进纸板压印机中的压印装置
CN108032598A (zh) * 2016-06-28 2018-05-15 海宁酷彩数码科技有限公司 一种改良的纸板压印机
CN108189535B (zh) * 2016-06-28 2019-07-12 佛山市顺德区美安达彩印包装有限公司 一种纸板压印设备
CN114126874A (zh) * 2019-05-27 2022-03-01 鲍勃斯脱梅克斯股份有限公司 具有压板肘节机构的印压机
TWI817118B (zh) * 2020-06-09 2023-10-01 瑞士商巴柏斯特麥克斯合資公司 片材加工單元和片材加工機

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JP2502259Y2 (ja) 1989-10-27 1996-06-19 株式会社アマダ プレス機械
JPH0615831U (ja) * 1992-07-31 1994-03-01 アイダエンジニアリング株式会社 プレス機械のトランスファ装置
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US20040103799A1 (en) * 2002-12-02 2004-06-03 Tian-Sheng Liu Main drive and convert mechanism in a platen press with a flat auto-die for cutting and gilding
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Also Published As

Publication number Publication date
JP2013542859A (ja) 2013-11-28
CN103118873B (zh) 2015-03-25
ES2496445T3 (es) 2014-09-19
EP2619011A1 (fr) 2013-07-31
WO2012038079A1 (fr) 2012-03-29
BR112013005553B1 (pt) 2020-07-07
US9352524B2 (en) 2016-05-31
TWI515120B (zh) 2016-01-01
CN103118873A (zh) 2013-05-22
JP5830786B2 (ja) 2015-12-09
KR101536833B1 (ko) 2015-07-14
US20130174749A1 (en) 2013-07-11
KR20130057474A (ko) 2013-05-31
BR112013005553A2 (pt) 2016-05-03
TW201217183A (en) 2012-05-01

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