EP0858888B1 - Flach-Prägedruckmaschine - Google Patents
Flach-Prägedruckmaschine Download PDFInfo
- Publication number
- EP0858888B1 EP0858888B1 EP98101498A EP98101498A EP0858888B1 EP 0858888 B1 EP0858888 B1 EP 0858888B1 EP 98101498 A EP98101498 A EP 98101498A EP 98101498 A EP98101498 A EP 98101498A EP 0858888 B1 EP0858888 B1 EP 0858888B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foil
- machine according
- flat
- loop
- embossing
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/30—Arrangements for accumulating surplus web
- B65H20/32—Arrangements for accumulating surplus web by making loops
-
- 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
- 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
-
- 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
- B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
-
- 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
- B41P2219/40—Material or products to be decorated or printed
- B41P2219/42—Sheet-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/31—Suction box; Suction chambers
- B65H2406/311—Suction box; Suction chambers for accumulating a loop of handled material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/21—Accumulators
- B65H2408/215—Accumulators supported by vacuum or blown air
Definitions
- the invention relates to a flat embossing printing machine for a to be embossed Flat material with a flat press, embossing table and tool plate according to Preamble of claim 1.
- stamping foil webs on the stamping table during the stamping phase to be held in a precisely positioned position and then during the unpressurized Phase quickly advanced to the next embossing position of the film web become.
- the sensitive stamping foil webs must be treated carefully and be promoted. This is difficult to achieve because of this stamping cycle results in a very uneven feed at the stamping location, while the sluggish unwinding rollers are driven substantially uniformly become.
- a completely different type of machine, embossing presses with at least one Embossing rotary cylinder with a blade store is known from GB 2 254 586.
- a film web is run from a continuously running unwind roll over a Loop memory is gradually pulled through the embossing gap, being in the loop memory with the help of an air stream, a free hanging film loop is formed is used to compensate for changes in the length of the film web.
- These known rotary embossing machines are however regarding embossing quality and machine speed very limited and above all are the requirements for the film guide comparatively, however, according to the relatively small speed differences low.
- this object is achieved by a flat embossing printing machine according to claim 1.
- the film loop memory with a differential pressure device loops of the film web are used for length compensation quickly, gently and in a compact space, while at the same time
- Foil feed device with the assigned feed and loop storage control ensures optimal positioning at the embossing location.
- the dependent claims relate to advantageous developments of the invention. They concern further improvements of the embossing machine functions and - properties and enable an even wider range of applications. Especially advantageous combinations result in the additional adjustment of Toggle geometry and embossing time as well as pressure control of the press and Register control of the flat material to be embossed.
- Fig. 1 shows a flat embossing machine according to the invention for a embossing flat material 5, with a flat-flat press 2, with an embossing table 3 and as a counterpart a tool plate 4 with clichés 23 and with at least one embossing foil web 6.
- the flat material 5 to be embossed consists in this example of sheet 5.1, which from an investor 71 a register device 70 led to the flat embossing table 3, there at a standstill stamped and then stacked in a boom 72.
- Press is a toggle press 41 with four toggle lever pairs 43, with joints 44 and 45 and two pairs of tie rods 42.
- the tool plate 4 is adjustable in the Z direction by means of a positioning device 61, e.g.
- the embossing material is on one or more film webs 6, 6.1, 6.2 of unwinding rolls 7, 7.1, 7.2 via a first film loop store upstream of the press 10 and a film feed device 24 on one Side of the embossing table 3 and a clamping device 25 on the other side of the embossing table and then a film discharge device 8 fed.
- the film web 6 can be connected to the press via a second one Foil loop storage 20 on one or more winding rolls 80 are performed.
- Foil removal device 81 e.g. in the form of a compacting or shredding system, be used.
- the film feed device 24 is a precisely controllable slip-free feed of the film web 6, e.g. by means of lighter Rollers or suction elements, ensured while the tensioning device 25 an adjustable, optimal, even film tension on the embossing table generated, so that the film at the embossing location, smooth and without distortion and stretching for embossing is held at a standstill.
- the film feed device 24 is connected downstream of the press and the Tensioning device 25, e.g. as a precisely adjustable slip brake with constant Braking force or film tension, upstream of the press. It is the other way round also possible with a downstream tensioning device 25 a uniform Train to exert on the film web, which from an upstream Foil feed device is controlled precisely and without slippage (e.g. in Fig. 14).
- This Feed control VV (t) must be carried out as gently, precisely and quickly as possible, so that the film web 6 during the printing phase TP (see FIG. 4) the embossing table 3 is held precisely in position and then during the depressurized phase TL quickly and yet gently into the next embossing position is preferred.
- large, rapidly changing speed differences result between the relatively constant unwinding or winding speeds V7, V8 on the one hand and the intermittent feed rate VV (t).
- the film loop memories 10, 20 are Differences due to enlargement or reduction of the loops 12 in the Save balanced.
- the stores are equipped with a differential pressure device 30 connected, which in the memory an air pressure difference on the Exercises loops 12 and thus keeps these loops always smooth and stretched.
- FIG. 2 shows a flat embossing printing machine with a Endless web 5.2 as flat material 5 to be embossed with a dancer roller store 110, here the flat material and the film web 6 in the opposite direction are promoted, while Fig. 1 the advantageous in many cases Synchronization of flat material 5 and film web 6 illustrated.
- the film side Speed ratios with respect to VV, V7, V8 remain the same here same as described for Figure 1.
- the two film loop stores 10 and 20 are designed as a double labyrinth memory 28 with a common one internal suction as a differential pressure device 30. This represents a particularly simple and compact design of a double storage Measurement and monitoring of the loop depth LT and thus also the loop length L in the memories are film loop sensors SF (see FIG. 6).
- FIG. 3 shows a circuit diagram with a machine control 50, a film web and memory controller 52, a controller of the toggle geometry 54, a print control 56 and a register control 58 for sheet or for endless track machines 59, as well as with assigned sensors SF, SB, SP and SD and with an operating and display device 40 for those concerned Adjustment and control functions.
- the example illustrates the controls of one Machine with two independently controllable film webs 6.1, 6.2 with unwinding rolls 7.1, 7.2 or take-up rolls 80.1, 80.2 and associated sensors to determine the unwinding speed V7.1, V7.2 or the winding speed V8.1, V8.2 (e.g. determined from roller diameter and speed).
- the corresponding are also on the film feed devices 24.1, 24.2 Feed speeds VV1, VV2 determined (e.g. by means of Encoder on servo motors).
- VV1, VV2 Feed speeds
- the film tensioning devices 25.1, 25.2 optimal film tension forces FF1, FF2 directly or indirectly adjustable and controllable.
- These film clamping forces FF1, FF2 are on the film web in question and the chosen embossing process can be tuned to match the embossing foils on the one hand, as gently as possible and without overstretching and on the other hand, nevertheless, a precise, stretched alignment and positioning the foils are reached at the embossing location 3, this and during the embossing process is optimally adjustable.
- An additional film-like alignment of the film webs 6 on the Clichés 23 of the tool plate 4 can be made using film image sensors SB1, SB2 take place (see Fig. 2 and 15a). This is e.g. required for embossing Holograms or foil images, which register to the clichés position (and from the other side the flat material is also the register device positioned with respect to the clichés).
- the foil and Memory controller 52 will also loop the two Stores 10 and 20 controlled and monitored, e.g. through film web sensors SF1.1, SF1.2 in memory 10 and sensors SF2.1, SF2.2 in memory 20, which each capture the loop depths LT1.1, LT1.2 and LT2.1, LT2.2.
- this film web and storage controller 52 can also control the toggle lever geometry as additional functions 54, e.g. by adjusting the distance XS between the toggle joint points and thus influencing the embossing time DT, and a control 56 of the Pressure force via the positioning device 61 of the press with the aid of pressure force sensors SP1 to SP4 (Fig. 1). Also a register control 58 for sheet machines with SDi sensors and actuators 91, 92, 93 (according to FIG. 1, 19) or a register control 59 for endless web machines with web memories 110, 120, web edge controls 112, 113 and web feed and Web tensioning devices 124, 125 result in an advantageous combination.
- FIG. 4 illustrates the feed control using an example with a five-cycle period VV, the film feed S (t) and the loop formation L (t) in the memories as a function of time over several embossing cycles. This is done here a relatively small film feed over four cycles (e.g. each 7 cm) and then a large feed in the fifth cycle (e.g. by 77 cm).
- FIG. 4b shows this course over the cycles 4, 5 and 1 in more detail.
- the feed S (t) is controlled as evenly as possible, without large changes in speed, ie with the lowest possible accelerations (d2S / dt 2 ). This is particularly important in the fifth cycle, when large changes in the loop length (from L2 to L1) occur in a short time during the depressurized phase TL of the cycle.
- the feed S (t) 0 must be during the printing phase TP and in particular during the embossing time DT, that is to say the film web must rest exactly on the embossing table.
- the line S7.2 (t) shows here, by way of example, a different time profile for a second film web 6.2, which here has a higher unwinding speed V7.2.
- FIG. 4c shows the change over time in the loop length L (t) in Foil loop memory 10 according to the feed movement S (t) according to Fig. 4b.
- Figure 4d shows an enlarged feed S (t) in cycle 5 and the influence the adjustment of the embossing time DT and thus also the printing phase TP a toggle lever adjustment according to Figures 16 - 18.
- a short stamping time DT1 results in a small value of TP1 and accordingly a larger one remains Range TL1 for changing the feed speed VV and for the change in the loop length L in the memories.
- the very aimed high embossing speeds e.g. 10,000 cycles per hour and more the cycle time T0 and accordingly also the phases TP and TL very small, which correspondingly higher feed speeds during the depressurized phase TL required.
- FIG. 5 shows a film loop memory 10 with two guide walls 16, 17, deflection rollers 39 and with a controllable pressure fan 31 and / or a suction fan 32 as a differential pressure device.
- DP Differential pressure
- P1 pressure in the loop
- P2 pressure outside or in front of the loop
- an adjustable air flow the essentially in the direction of expansion of the loop 12 in the film store runs.
- the film loop 12 runs along the guide walls 16, 17 and parallel to these.
- the guide walls 16, 17 can e.g. also tapered the arrangement of guide walls (as well as any Side walls) and differential pressure devices so coordinated is that a uniform air flow for optimal training of the desired film loop in the entire area between minimum loop length L1 and maximum loop length L2 are created.
- the determination and The loop length L is monitored here with a distance sensor SF (e.g. as an optical or ultrasonic detector), which is at the memory input is arranged and measures the loop depth LT. Then from LT Loop length L can be calculated.
- a distance sensor SF e.g. as an optical or ultrasonic detector
- FIGS. 7a, b show a film loop memory with side walls 18, 19 from above and from the side.
- the example shows another variant of a adjustable memory geometry, with which, matched to the differential pressure device, an optimal local flow distribution for a perfect Loop formation, e.g. also of different widths of film, can be adjusted.
- With sliding side walls 18, 19 or lids 22 attached thereto may have adjustable openings or slots 13 are formed.
- the film loop memory according to FIG. 8 has one as another example Suction box 15 with an inlet opening 14 for the film webs 6.1, 6.2 and with a suction fan 32 at the loop end or at the lower end of the Suction box.
- the loop memory can simultaneously several film webs 6.1, 6.2 (different types and Width), which are independently promoted and thus form different loops. To achieve optimal flow conditions for each loop you can use the variable covers 26 approximately the same size free inlet openings on both sides of each film web 6.1, 6.2 27 can be set.
- the differential pressure devices can the film loop storage also suction rolls 34 or suction wall elements 35 with circumferential perforated bands 36, which are advantageous additionally combined with a pressure or suction fan 31, 32.
- FIG. 10 shows a suction roller 34 with a suction area 37 on the input side Promotion of the film web 6 into the memory.
- the loop formation is supported here by a pressure blower 31.
- a perforated suction wall element 35 conveys a rotating one Perforated tape 36 via the suction and conveying area 37 to the film web 6 Forming a loop in the memory.
- This memory is suitable e.g. particularly good for long loops with very narrow foil webs.
- FIG. 12 shows a suction wall element 35 with perforated band 36, the one running downwards Area 35.1 forms a transport wall of a feed store 10 and whose upward area 35.2 is a transport wall for a discharge store 20 forms.
- Figure 13 shows a double memory 29, which has two compartments 16.1, 17.1 and 16.2, 17.2, these two compartments having a plurality of film webs 6.1 to 6.4 alternately and each spaced apart among the subjects exhibit. Both compartments can be combined with only one differential pressure device operate.
- Figure 14 illustrates an example of a machine with multiple longitudinal and Transversal film webs (in the X and Y directions), which can be controlled independently are.
- Two longitudinal tracks 6.1 and 6.2 with feed speeds VV1, VV2 have separate feed devices 24.1, 24.2 and clamping devices 25.1, 25.2 and shared film loop storage 10.1, 20.1.
- Two Cross tracks 6.3, 6.4 with feed speeds VV3, VV4 have separate Feed devices 24.3, 24.4 and clamping devices 25.3, 25.4 and common film storage 10.2 and 20.2.
- FIG. 15 illustrates an embossing work with several different embossing foil webs with different embossed goods and different clichés, which is carried out simultaneously in one stamping process.
- the film webs in the longitudinal and transverse directions can be simultaneously with more clichés and more complex images.
- Condition is that no clichés are arranged in the crossing areas of the film webs are.
- a sheet 5.1 in to be embossed is shown in FIG. 15a Y direction divided into two identical areas.
- In the X direction with two identical film webs 6.1, 6.2 with image units corresponding to the Clichés 23.1 coined.
- FIG. 15b shows the pronounced image film web 6.2 and FIG. 15c the distinctive color film web 6.3 with a 3-cycle period.
- the order the film webs and their individual feed control is done in such a way that the foil stamping is used in the best possible way.
- a flat embossing printing machine is created, which is very demanding and complex embossing tasks in one pass at high speed and can perform in the best quality and also the film webs little burdened and whose embossed goods can be used in the best possible way.
- Figures 16-18 illustrate the combination of the inventive Machine with a geometry adjustment or an embossing time adjustment (DT).
- DT embossing time adjustment
- Figure 16 shows a geometry adjustment of a toggle press with seen from above four pairs of toggle levers, their lower four toggle lever joints 45 (see Figure 1) are adjusted simultaneously by a servo drive 48 via a Transmission to the four joints 45. The adjustment takes place e.g.
- each over one Spindle and an adjusting wedge 49 so that the distance XS of the joints 45 is adjustable by means of the controllable motors 48 and a geometry control 54.
- controllable motors 48 and a geometry control 54 there are also other forms of drive (e.g. hydraulic or with Manual drive) possible or all four joints 45 can be directly with one synchronously controlled motor can be moved.
- the adjustment can be programmable and is preferably done step by step only during the depressurized phase (TL).
- FIG. 17 illustrates the geometry adjustment on one of the toggle lever pairs 43, which are moved by the tie rods 42.
- the setting XS1 ⁇ 0 results in a maximum deflection position 43a, the toggle levers 43, 43a not fully reaching their extended position 46.
- the setting XS2 0, the extended position 46 is just reached in the maximum deflection position 43b.
- the setting XS3> the extended position 46 is exceeded up to the maximum deflection 43c. This results in
- the embossing machine has sensors SP1 to SP4 for measurement of the press pressure forces F (see FIGS. 1 and 16).
- the pressure control 56 controls the tool plate 4 in the direction through the positioning device 61 Z4, so that a desired predetermined working pressure F automatically can be kept constant.
- the pressure control can also be different Compression control functions included. With the toggle geometry control 54 and the press pressure control 56 can thus both with respect the embossing time DT as well as the embossing pressure F optimal Parameter values set and thus the highest embossing quality and machine performance can be achieved.
- This control of the toggle geometry and the pressure phase can also independent of the loop memories according to the invention for optimization of the embossing quality can be used.
- films of various types and Widths can be processed optimally.
- very wide and very thin Foils with a thickness of e.g. 15 - 30 ⁇ are extremely difficult to work properly to transport.
- the insulating plastic carrier material of the foils is electrostatically charged, what on the guide walls (inlet walls 16 and Outlet walls 17) of the accumulator may have relatively high frictional forces can result, which lead to distortion and hull formation of the film webs can.
- An important development of the invention is the frictional forces of the foil webs running over it, especially on the inlet walls 16 to keep the loop storage small or to reduce it to one size, that the loop formation and the transport can take place optimally.
- FIGS. 19 to 23 Various Measures and means for this are shown in FIGS. 19 to 23 shown.
- the Ratio of contacted to covered area F1 / F0 is less than 50% and is preferably even less, e.g. 10 - 30%.
- Such structured surfaces 63 can be formed in various ways e.g. through grooves or channels 64, according to FIGS. 19 a and 20, or by means of grids or fine-mesh wire meshes 65 according to FIG. 91b or by perforated sheets, knobbed sheets or corrugated sheet 66 according to FIG. 19c.
- the lattice constant or the structural distances of these structured surfaces are preferably only 1mm or less, e.g. 0.3 - 1 mm.
- FIG. 20 shows a top view of an example of a structured surface with Longitudinal and transverse channels 64, here an area ratio F1 / F0 of approx. 25% is illustrated.
- FIG. 21 Another particularly simple and effective method for reducing the Contact area portion F1 or the frictional force of the film web on the inlet wall 16 consists of the film web by partially blowing in air partially detachable from the inlet wall.
- the Inlet wall 16 has injection holes 75 through which an overpressure chamber 74 local air is blown in under the film.
- This air-assisted Reduction of friction on the inlet wall is the one to be transported Corresponding foils, easy to dose by controlling the Overpressure P3 in the chambers 74. This can e.g. 2 - 4 bar.
- the Blow-off openings 75 are preferably dimensioned relatively small and large Spaced from each other. The diameter of the blow-off openings is e.g.
- the guide walls are metallically conductive and the ventilated inlet walls can be a smooth surface (Fig. 21) or a textured Surface (Fig.20).
- FIG. 22 shows a further variant for reducing the frictional force Applying a potential U2 to the inlet wall 16 with an adjustable one Voltage source 96.
- the inlet wall is metallically conductive and from the environment trained in isolation.
- the potential difference U1 - U2 between the film web 6 and the guide wall 16 reduced so far that the desired low value of the friction force is reached.
- the setting of the Potential U2 on the inlet wall 16 is such that an optimal smooth Loop formation and film guidance is achieved.
- the potential U1 of the film web 6 is determined by means of a capacitive potential probe 95 and then the potential U2 is set or regulated.
- FIG. 23 shows an example with a double compartment memory 29 before and after the embossing press and each with a film web 6.1, 6.2 in a respective compartment two double compartments.
- the loops are formed in the stores by vacuum suction using a common suction fan 32.
- the four inlet walls 16.1, 16.2 have ventilation with overpressure chambers 74 with a pressure P3 and injection openings 75.
- the four outlet walls 17.1, 17.2 are, however, expressly not ventilated. The friction force the outlet walls are therefore deliberately higher than on the inlet walls, so that the film web is slightly stretched for perfect further transport becomes.
- a drag wheel 53 with a rotary encoder detects speed and Feed of the running film web, with which the motor of the winding roll 80 as well as feed and loop formation in the stores can be controlled.
- FIG. 24 shows the combination of the flat embossing printing machine according to the invention with a register control 58 of the flat material. That combination enables both-sided optimization on the film web side with regard to the Foil guidance and alignment as well as regarding the flat material guidance for precise image alignment.
- On the film side e.g. Film subjects like holograms or film images by means of the film image sensors SB (FIG. 15a, FIG. 2) precisely aligned with the clichés 23 on the tool plate 4, while the sheet 5.1 by the register control also in exact position the location of the clichés to be aligned.
- Such register control for Sheet-fed machines are known from EP-A-708 046.
- the register feeding device 70 for flat embossing printing machines has leading edge stops, a side stop and position sensors SD1, SD2, SD3 for detecting print marks M1, M2, M3 of sheet 5.1 and two the detectors SD4, SD5 assigned to the front stops A1, A2 for Detect the leading edge of the sheet.
- the front stops are A1, A2 adjustable by actuators 91, 92 until the front print marks M1, M2 of the sheet are detected by the corresponding sensors SD1, SD2 are.
- An actuator 93 then adjusts the side stop or sideshift A3 until the page print mark M3 from the assigned position sensor SD3 is recorded.
- a register controller 58 controls this register correction with the position sensors SD1, SD2, SD3, the detectors SD4, SD5 and the actuators 91, 92, 93. This simply results in a reliable automatic register correction for each individual sheet and increased thus, in combination with the film guidance and control, the print quality.
- FIG. 25 shows, seen from above, a register control 59 for Endless web machines (Fig. 2) with sensors SD1, SD3 for detecting Print marks M1, M3.
- the endless web 5.2 runs from an unwind roll 107 to a take-up reel 108 with web edge controls 112, 113, web stores 110, 120 (designed as dancer rollers or also as a suction accumulator), a web tensioning device 125 and a web feed device 124
- the continuous web is aligned in the transverse direction Y with the print mark M3 through the known web edge controls 112, 113 and Alignment with the mark M1 in the longitudinal direction X is carried out with the web feed device 124 controlled.
- Foil web control also here web storage 110 and 120 for the endless web 5.2 used.
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Description
- Fig. 1
- eine erfindungsgemässe Flach-Prägedruckmaschine mit Folienbahnspeichern und Vorschubsteuerung
- Fig. 2
- ein weiteres Beispiel mit Doppelspeichern und Endlosbahn
- Fig. 3
- ein Schaltschema mit Folienbahn- und Speichersteuerung sowie mit weiteren Funktionen
- Fig. 4
- den zeitlichen Verlauf von Folienvorschub S und Schlaufenbildung L im Speicher
- Fig. 5, 6
- Beispiele von Folienschlaufenspeichern mit Führungswänden und Differenzdruckvorrichtungen
- Fig. 7
- einen Folienspeicher mit einstellbaren Seitenwänden
- Fig. 8, 9
- Saugkastenspeicher mit variablen Abdeckungen
- Fig. 10
- einen Speicher mit Saugwalze
- Fig. 11
- einen Speicher mit Saugwandelement und Lochband
- Fig. 12
- einen Doppelspeicher mit Saugwandelement
- Fig. 13
- einen Doppelspeicher mit mehreren Folienbahnen
- Fig. 14
- eine Maschine mit mehreren unabhängigen Längs- und Querfolienbahnen
- Fig. 15
- ein Prägebeispiel mit mehreren Prägefolienbahnen und Clichés
- Fig. 16
- eine Geometrieverstellung von Gelenken einer Kniehebelpresse
- Fig. 17
- schematisch eine Geometrieverstellung von Kniehebeln
- Fig. 18
- Hubbewegungsverläufe H des Prägetischs in Funktion der Zeit
- Fig. 19 a,b,c
- Beispiele von strukturierten Führungsflächen
- Fig. 20
- eine strukturierte Einlaufwand mit Einblasöffnungen
- Fig. 21
- eine belüftete Einlaufwand
- Fig. 22
- eine Einlaufwand mit angelegtem Potential
- Fig. 23
- Doppelfachspeicher mit belüfteten Einlaufwänden
- Fig. 24
- eine Registereinzugsvorrichtung in einer Bogenmaschine
- Fig. 25
- eine Endlosbahnmaschine mit Registersteuerung
- eine Steuerung der Kniehebelgeometrie 54 und eine Pressen-Drucksteuerung 56, wie dies in den Figuren 16 bis 18 weiter erläutert wird,
- sowie eine Registersteuerung 58 für Bogen gemäss Fig. 24, bzw. eine Registersteuerung 59 für Endlosbahnen gemäss Fig. 25.
Mit der Einstellung XS1 < 0 resultiert eine maximale Auslenkungslage 43a, wobei die Kniehebel 43, 43a ihre gestreckte Lage 46 nicht ganz erreichen.
Mit der Einstellung XS2 = 0 wird in der maximalen Auslenkungslage 43b die gestreckte Lage 46 eben erreicht.
Mit der Einstellung XS3 > 0 wird die gestreckte Lage 46 überschritten bis zur maximalen Auslenkung 43c. Dies ergibt nach
- 2
- Flach-Presse
- 3
- Prägetisch
- 4
- Werkzeugplatte
- 5
- Flachmaterial
- 5.1
- Bogen
- 5.2
- Endlosbahn
- 6
- Folienbahnen
- 7
- Abwickelrolle
- 8
- Folienabführeinrichtung
- 10, 20
- Folienschlaufenspeicher
- 12
- Folienschlaufe
- 13
- einstellbare Öffnungen an 18, 19
- 14
- Eingangsöffnung
- 15
- Saugkasten
- 16
- Einlaufwand
- 17
- Auslaufwand
- 16,
- 17 Führungswände
- 18,
- 19 Seitenwände
- 22
- Deckel an 18, 19
- 23
- Clichés
- 24
- Folienvorschubeinrichtung
- 25
- Spanneinrichtung
- 26
- Variable Abdeckungen an 14
- 27
- freie Einlassöffnungen an 14
- 28
- Doppelschlaufenspeicher Labyrinth
- 29
- Doppelfach
- 30
- Differenzdruckvorrichtung
- 31
- Druckgebläse
- 32
- Sauggebläse
- 34
- Saugwalze
- 35
- Saugwandelement
- 35.1
- aufwärts
- 35.2
- abwärts laufend
- 36
- Lochband
- 37
- Saugbereich von 34, 35
- 39
- Umlenkrollen
- 40
- Bedienungs- und Anzeigegerät
- 41
- Kniehebelpresse
- 42
- Zugstangen
- 43
- Kniehebel
- 44
- Kniegelenke
- 45
- untere Kniehebelgelenke
- 46
- Verbindungsgerade, gestreckte Lage
- 48
- steuerbare Motoren
- 49
- Verschiebekeil
- 50
- Maschinensteuerung
- 52
- Steuerung Folienvorschub und Speicher
- 53
- Schlepprad
- 54
- Steuerung Kniehebelgeometrie
- 56
- Drucksteuerung
- 58
- Registersteuerung für Bogen
- 59
- Registersteuerung für Endlosbahn
- 61
- Positioniervorrichtung bei 4
- 63
- strukturierte Oberfläche
- 64
- Kanäle
- 65
- Gitter, Drahtgeflecht
- 66
- Wellblech
- 70
- Registervorrichtung für Bogen 5.1
- 71
- Anleger
- 72
- Ausleger
- 74
- Überdruckkammer
- 75
- Einblasöffnung
- 80
- Aufwickelrolle
- 81
- direkt abführen
- 91, 92, 93
- Stellglieder
- 95
- kapazitive Potentialsonde
- 96
- einstellbare Spannungsquelle
- 107
- Abwicklung Endlosbahn
- 108
- Aufwicklung Endlosbahn
- 110, 120
- Bahnspeicher
- 112, 113
- Bahnkantensteuerung
- 124
- Bahnvorschubeinrichtung
- 125
- Bahnspanneinrichtung
- T0
- Pressenzyklus, Zyklendauer
- TP
- Druckphase
- TL
- drucklose Phase
- DP = P1 - P2
- Druckdifferenz
- P1
- Druck in Schlaufe 12
- P2
- Druck vor Schlaufe 12
- P3
- Druck in Überdruckkammern
- VV
- Vorschubgeschwindigkeit
- V7
- Bahngeschwindigkeit an 7
- V8
- Bahngeschwindigkeit an 8
- S(t)
- Folienvorschub
- L
- Schlaufenlänge
- L1
- Schlaufenlänge in 10, Minimum
- L2
- Maximum
- LT
- Schlaufentiefe
- DT
- Prägezeit
- DH
- Höhendifferenz während DT
- H(t)
- Höhe von 3
- XS
- Verschiebung von 45
- M1, M2, M3
- Druckmarken
- SD1 - SD5
- Registersensoren, Lagedetektoren
- A1, A2
- Vorderanschläge
- A3
- Seitenanschlag
- X
- Laufrichtung
- Y
- Querrichtung
- Z
- Hochrichtung
- Z4
- Verschiebung von 4
- F
- Druckkräfte
- t
- Zeit
- SF
- Sensoren für Folienschlaufe
- SB
- Folienbildsensoren
- SP
- Druckkraftsensoren
- FF
- Folienspannkräfte
- F1
- Folienkontaktfläche
- F0
- überdeckte Folienfläche
- F1/F0
- Kontaktflächenanteil
Claims (27)
- Flach-Prägedruckmaschine für ein zu beprägendes Flachmaterial (5) mit Flach-Presse (2), Prägetisch (3) und Werkzeugplatte (4) und mit mindestens einer Folienbahn (6), welche von einer Abwickelrolle (7) über den Prägtisch zu einer Folienabführeinrichtung (8) geführt ist,
mit einer Folienvorschubeinrichtung (24) auf der einen Seite der Presse und einer Spanneinrichtung (25) zum Spannen der Folienbahn (6) auf der anderen Seite der Presse und mit einer dem Pressenzyklus (T0) entsprechenden Steuerung (52) des Folienvorschubs am Prägeort, mit welcher die Folienbahn während der Druckphase (TP) auf dem Prägetisch (3) stillgehalten wird und während der drucklosen Phase (TL) in die nächste Prägeposition vorgezogen wird und wobei Geschwindigkeitsunterschiede zwischen Vorschubgeschwindigkeit VV am Prägeort und Bahngeschwindigkeit V7 an der Abwickelrolle bzw. an der Abführeinrichtung V8 ausgeglichen werden,
gekennzeichnet durch
mindestens einen Folienschlaufenspeicher (10) vor der Presse mit einer Differenzdruckvorrichtung (30) zur Formung einer Folienschlaufe (12) mittels einer auf die Folienbahn ausgeübten Luftdruckdifferenz (DP),
wobei die Folienbahn (6) an Führungswänden (16, 17) entlang geführt wird mit einer Reibungskraft zwischen Folienbahn und Führungswänden,
und wobei die Steuerung (52) die Schlaufenbildung steuert durch entsprechende Vergrösserung und Verkleinerung der Schlaufen (L1, L2) in den Folienspeichern (10, 20) zum Ausgleich der Geschwindigkeitsunterschiede
und wobei die Folienbahn (6) während der drucklosen Phase (TL) kontinuierlich beschleunigt und verzögert in die nächste Prägeposition vorgezogen wird, d.h. mit möglichst geringen Beschleunigungen (d2S/dt2). - Flach-Prägedruckmaschine nach Anspruch 1, gekennzeichnet durch einen weiteren Folienschlaufenspeicher (20) und eine Aufwickelrolle (80) nach der Presse als Folienabführeinrichtung (8).
- Flach-Prägedruckmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Differenzdruckvorrichtung ein steuerbares Druckgebläse (31) und/oder Sauggebläse (32) aufweist, welche eine einstellbare Luftströmung erzeugen, die im wesentlichen in Ausdehnungsrichtung der Schlaufe im Folienspeicher verläuft und dass die Folienschlaufenspeicher zwei parallel zur Folienschlaufe (12) verlaufende Führungswände (16, 17) aufweisen.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folienschlaufenspeicher eine einstellbare Geometrie (13, 26) aufweisen zur Veränderung der örtlichen Strömungsverteilung.
- Flach-Prägedruckmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Folienschlaufenspeicher auch zwei Seitenwände (18, 19) mit einstellbaren Öffnungen (13) aufweisen.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folienschlaufenspeicher einen Saugkasten (15) aufweisen mit einer Eingangsöffnung (14) für die Folienbahn und mit einer Absaugung (32) am Schlaufenende.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Folienschlaufenspeicher eine Eingangsöffnung (14) mit variablen Abdeckungen (26) aufweist und dass die Folienschlaufenspeicher beidseitig einer Folienbahn im wesentlichen gleich grosse freie Einlassöffnungen (27) aufweisen.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folienschlaufenspeicher eine Saugwalze (34) oder ein Lochband (36) mit Sauggebläse (32) als Folientransportmittel am Speicher aufweisen.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folienschlaufenspeicher ein feststehendes gelochtes Saugwandelement (35) mit einem Unterdruck im Innern aufweist, um welches ein Lochband (36) umläuft und dadurch einen kontinuierlichen Folientransport bewirkt.
- Flach-Prägedruckmaschine nach Anspruch 9, dadurch gekennzeichnet, dass das Lochband um eine zweiseitige Saugwand umläuft mit je einem aufwärts (35.1) und einem abwärts (35.2) laufenden Bereich, welche je eine Führungswand von zwei benachbarten Folienspeichern (10, 20) bilden.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, gekennzeichnet durch Sensoren (SF1, SF2) zur Überwachung der Schlaufenbildung, insbesondere Distanzsensoren zur Messung der Schlaufentiefe (LT), z.B. in Form von optischen oder Ultraschall-Detektoren.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Folienbahnen (6.1, 6.2, 6.3) in den Folienspeichern, mit Zwischenräumen nebeneinanderliegend, angeordnet sind und dass mehrere Folienbahnen (6.1, 6.2) mit separaten Vorschubeinrichtungen (24.1, 24.2) vorgesehen sind, deren Vorschub (VV1, VV2) individuell steuerbar ist.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folienspeicher als Doppel-Schlaufenspeicher (28, 29) für mehrere Folienbahnen ausgebildet sind.
- Flach-Prägedruckmaschinen nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Prägefolienbahnen (6.1 - 6.4) mit zugeordneten Folienspeichern längs und/oder quer zur Laufrichtung X des Flachmaterials vorgesehen sind.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass mindestens an den Einlaufwänden (16) der Schlaufenspeicher Mittel zur Reduktion der Reibungskraft einer darüber laufenden Folienbahn (6) vorgesehen sind, so dass die Reibungskraft an den Einlaufwänden (16) kleiner ist als die Reibungskraft an den Auslaufwänden (17).
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Kontaktflächenanteil F1 einer Folienbahn an den Führungsflächen (16, 17) der Schlaufenspeicher weniger als die Hälfte der überdeckten Folienfläche F0 beträgt, z.B. F1/F0 = 10 - 30 %.
- Flach-Prägedruckmaschine nach Anspruch 16, dadurch gekennzeichnet, dass mindestens die Einlaufwände (16) eine strukturierte Oberfläche (63) aufweisen, z.B. in Form von Kanälen (64), feinmaschigen Drahtgeflechten (65), Noppenblech oder Wellblech (66).
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass an den Einlaufwänden (16) Luft aus Überdruckkammern (74) durch Einblasöffnungen (75) in die Schlaufenspeicher geblasen wird.
- Flach-Prägedruckmaschine nach Anspruch 18, dadurch gekennzeichnet, dass kleine Einblasöffnungen in relativ grossem Abstand zueinander vorgesehen sind, z.B. mit einem Durchmesser von 0.5 bis 1 mm und in einem Abstand von 5 bis 20 cm.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass an metallisch leitenden Einlaufwänden (16) ein Potential U2 mittels einer einstellbaren Spannungsquelle (96) angelegt ist.
- Flach-Prägedruckmaschine nach Anspruch 20, dadurch gekennzeichnet, dass eine kapazitive Potentialsonde (95) zur Bestimmung des Potentials U1 der einlaufenden Folienbahn (6) und zur entsprechenden Steuerung des Potentials U2 an der Einlaufwand (16) vorgesehen ist.
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche dadurch gekennzeichnet, dass eine Kniehebelpresse (41) vorgesehen ist, deren Kniehebelgeometrie so verstellbar ist (XS), dass damit die Druckphase (TP) variert wird.
- Flach-Prägedruckmaschine nach Anspruch 22, dadurch gekennzeichnet, dass die Kniehebelgeometrie durch Veränderung des Abstands (XS) der Kniehebelgelenke (45) einstellbar ist.
- Flach-Prägedruckmaschine nach Anspruch 22, dadurch gekennzeichnet, dass die Verstellung durch eine Steuerung (54) mittels steuerbarer Motoren (48) erfolgt, z.B. mittels Servomotoren und Verschiebekeil, und dass die Verstellung programmierbar ist und bei laufender Maschine schrittweise während der drucklosen Phase (TL) ausgeführt wird.
- Flach-Prägedruckmaschine nach Anspruch 22, dadurch gekennzeichnet, dass gleichzeitig auch die Position der Werkzeugplatte (4) mittels einer Positioniervorrichtung (61) einstellbar ist durch eine Drucksteuerung (56) mit Steuerprogramm und mit Drucksensoren (SP).
- Flach-Prägedruckmaschine nach einem der vorangehenden Ansprüche für Bogen als Flachmaterial, dadurch gekennzeichnet, dass eine Fördereinrichtung für Bogen (5.1) mit Anleger und Ausleger sowie eine Registereinzugsvorrichtung (70) mit einer Registersteuerung (58) und mit sensorgesteuerten Vorder- und Seitenanschlägen (A1, A2, A3) vorgesehen ist zur Ausrichtung der Bogen nach Druckmarken (M1, M2, M3), welche von den Sensoren (SD) erfasst werden.
- Flach-Prägedruckmaschine nach einem der Ansprüche 1 bis 25 für eine Endlosbahn als Flachmaterial, gekennzeichnet durch eine Registersteuerung (59) zur Ausrichtung und Steuerung der Endlosbahn (5.2) nach Druckmarken (M1, M3) mittels Sensoren (SD1, SD3) wobei die Steuerung in Querrichtung durch eine Bahnkantensteuerung (112) und in Längsrichtung durch Steuerung des Endlosbahnvorschubs (124) erfolgt.
Applications Claiming Priority (3)
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CH31297 | 1997-02-13 | ||
CH31297 | 1997-02-13 | ||
CH312/97 | 1997-02-13 |
Publications (4)
Publication Number | Publication Date |
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EP0858888A2 EP0858888A2 (de) | 1998-08-19 |
EP0858888A3 EP0858888A3 (de) | 1999-02-17 |
EP0858888B1 true EP0858888B1 (de) | 2002-09-11 |
EP0858888B2 EP0858888B2 (de) | 2007-03-07 |
Family
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EP98101498A Expired - Lifetime EP0858888B2 (de) | 1997-02-13 | 1998-01-29 | Flach-Prägedruckmaschine |
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US (1) | US5979308A (de) |
EP (1) | EP0858888B2 (de) |
DE (1) | DE59805462D1 (de) |
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EP0690017B1 (de) * | 1994-06-30 | 1998-10-07 | Eastman Kodak Company | Apparat mit niedriger Trägheit zum Speichern und Aufbringen einer Spannung an Bahnen |
EP0708046A1 (de) * | 1994-10-21 | 1996-04-24 | Maschinenfabrik Gietz Ag | Registereinzugsvorrichtung |
DE9420707U1 (de) * | 1994-12-24 | 1995-02-16 | Steuer Armin | Präge-Rotationsmaschine |
JP3363278B2 (ja) * | 1995-01-26 | 2003-01-08 | 日本たばこ産業株式会社 | 帯状材の安定走行装置 |
DE19503110B4 (de) * | 1995-02-01 | 2009-01-29 | Heidelberger Druckmaschinen Ag | Bogenleiteinrichtung für Druckmaschinen |
EP0741001B1 (de) * | 1995-05-04 | 2002-02-06 | Gietz AG | Präge-Druck- und Stanzmaschine |
US5813337A (en) * | 1996-06-05 | 1998-09-29 | Quad/Tech, Inc. | Closed-loop printing control system |
-
1998
- 1998-01-29 EP EP98101498A patent/EP0858888B2/de not_active Expired - Lifetime
- 1998-01-29 DE DE59805462T patent/DE59805462D1/de not_active Expired - Lifetime
- 1998-02-11 US US09/021,757 patent/US5979308A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0623432A1 (de) * | 1993-04-08 | 1994-11-09 | Eastman Kodak Company | Verfahren und Vorrichtung zum Transport sowie zum Lochstanzen eines bandförmigen Materials |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007049421A1 (de) * | 2007-10-12 | 2009-04-23 | Leonhard Kurz Gmbh & Co. Kg | Verfahren und Vorrichtung zur Dekoration einer Oberfläche eines Werkstücks |
DE102007049421B4 (de) * | 2007-10-12 | 2010-06-10 | Leonhard Kurz Gmbh & Co. Kg | Verfahren und Vorrichtung zur Dekoration einer Oberfläche eines Werkstücks |
CN103097135A (zh) * | 2010-09-08 | 2013-05-08 | 鲍勃斯脱梅克斯股份有限公司 | 向传送烫印箔的系统导入烫印箔的方法及其实施装置 |
CN103097135B (zh) * | 2010-09-08 | 2016-01-20 | 鲍勃斯脱梅克斯股份有限公司 | 向传送烫印箔的系统导入烫印箔的方法及其实施装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0858888A3 (de) | 1999-02-17 |
US5979308A (en) | 1999-11-09 |
EP0858888A2 (de) | 1998-08-19 |
DE59805462D1 (de) | 2002-10-17 |
EP0858888B2 (de) | 2007-03-07 |
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