EP0802136B1 - Einrichtung und Verfahren zum Dekorieren von Profillamellen - Google Patents

Einrichtung und Verfahren zum Dekorieren von Profillamellen Download PDF

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Publication number
EP0802136B1
EP0802136B1 EP97400847A EP97400847A EP0802136B1 EP 0802136 B1 EP0802136 B1 EP 0802136B1 EP 97400847 A EP97400847 A EP 97400847A EP 97400847 A EP97400847 A EP 97400847A EP 0802136 B1 EP0802136 B1 EP 0802136B1
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EP
European Patent Office
Prior art keywords
strips
conveyor
series
station
blades
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EP97400847A
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English (en)
French (fr)
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EP0802136A1 (de
Inventor
Michel Coudert
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Grosfillex SAS
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Grosfillex SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/06—Movable stops or gauges, e.g. rising and falling front stops

Definitions

  • the present invention relates to an installation for decorating profiled blades, comprising a conveyor capable of transporting a plurality blades and a printing station having at least one printing unit suitable for applying ink to the surface of the slides.
  • the present invention aims to remedy these drawbacks and to propose an installation which makes possible and easy the decoration of the boards sections driven on the conveyor, even for making and repetition of particular geometric patterns.
  • the installation according to the invention comprises a station separation of the blades, adjacent to the conveyor and arranged upstream of this last, this separation station having means for maintaining a plurality of blades in a target position, in which the blades are apart, parallel and arranged so that their direction longitudinal is parallel to the direction of travel of the conveyor, and means for bringing said blades occupying the target position to conveyor.
  • the installation includes at least one guide station arranged, on the path of the blades driven by the conveyor, upstream of the printing station, this guide station comprising guides bracing likely to cooperate with the blades, in the vicinity of longitudinal edges of the latter, so that said blades slide between these guides and are forced to occupy their target position before entering in the printing station.
  • the separation station ensures prepositioning correct blades when entering the conveyor. However, during the portion of their journey preceding their entry into the printing station, the blades can be moved very slightly. This is particularly the case when, before entering the printing station, the slides pass in a treatment station where they are subjected to brushing or surface cleaning. Any other effect, such as possible vibrations of the conveyor, can also cause a displacement of the blades.
  • the passage of the blades in the guide station before they enter the printing station to control their positioning and, if necessary if necessary, force them to return to their target position.
  • the action of the guidance station is simplified due to the prior positioning of the blades thanks to the separation station, since the guide station only has to correct any deviation of positioning without having to achieve correct positioning on its own from a state in which the blades would be almost arranged random on the conveyor.
  • the separation station comprises transverse drive means capable of exerting an action on the profiled blades to move them substantially perpendicular to the direction of advance of the conveyor and n series of stop means, n being a number integer at least equal to 2.
  • the first series is that which, in the direction of advancement of the transverse drive means, is most downstream of the separation station, while the n th series is that which, in the same direction, is most upstream of said station.
  • the stop means of two consecutive series are spaced from each other by a distance substantially equal to the width of a blade, the stop means of series 2 to n being capable of occupying a retracted position in which they are located.
  • the separation station further comprises n-1 actuation means for the stop means of series 2 to n; the k th actuation means (k being an integer varying from 1 to n-1) is capable of leaving the abutment means of the k + 1 th series in their retracted position as long as no blade is present in the interval between the k th and the k + l th series and to request these abutment means to bring them into their active abutment position when a blade is in said interval.
  • the separation station also includes longitudinal drive means capable of exerting an action on the blades to move them, parallel to the direction of advancement of the conveyor, up to the latter, and recovery means capable, when the blades occupy their target position in the separation station, to stop the action of the transverse drive means on said blades and to start the action of the longitudinal drive means on these blades.
  • the installation includes means for coordinating the positions of the blades before they enter the station printing means, these means comprising retractable stop members front likely to adopt a retracted position in which the blades escape them and an active stop position in which they are able to cooperate in abutment with the front ends of the blades and in which they occupy relative positions, determined positions coordination means further comprising control means front stop members between their retracted and active positions.
  • the invention also relates to a method of decorating blades profiled, including the transport of the blades on a conveyor and applying ink to the surface of the slides using at least one unit belonging to a printing station.
  • Such known methods generally allow only to carry out an extremely simple decoration, consisting mainly of applying to the surface of the blades a generally uniform ink layer with, possibly, shades of colors arranged more or less random.
  • the invention aims to provide an improved method which facilitates the decoration of the blades driven on the conveyor, even for the realization and the repetition of particular geometric patterns.
  • the method according to the invention comprises a step of separation of the blades and arrangement of a plurality of blades in a target position, in which they are spread apart, parallel and arranged so that their longitudinal direction is parallel to the direction advancement of the conveyor, a step of feeding the blades occupying their target position up to the conveyor and a blade guiding step driven by the conveyor, upstream of the printing station, using bracing guides capable of cooperating with the blades at the near their longitudinal edges.
  • the separation step ensures correct prepositioning blades as they enter the conveyor.
  • the blade guide stage which is carried out before the ink application step on the slides, allows check the positioning of the latter and, if necessary, force them to return to their target position.
  • the step of separating the blades comprises a transverse drive step, substantially perpendicular to the advancement direction of the conveyor, upstream of the latter, a step of successive abutment of n blades driven transversely against n series of stop means, n being an integer at least equal to 2 (the stop means of each series being parallel to the direction of advance of the conveyor) and a step of longitudinal drive of the blades, parallel to the direction of travel of the conveyor and until latest.
  • the method includes a step of coordination of blade positions before entering the station including adjusting the positions of the front ends of the blades relative to each other.
  • the installation of Figure 1 is used to decorate profiled blades.
  • blades are generally manufactured by extrusion from material plastic. They are used for example for coating surfaces such as walls and have a flat face intended to be visible when they are in place, and sides provided with additional hooking means allowing to connect the blades to each other. When they leave the extruder, the blades generally have a uniform color white or gray.
  • the installation according to the invention is used for the decoration of the flat face of the blades.
  • the decoration may include a coloring of this face and the realization of various patterns which can be geometric, regular or not. So the patterns can mimic the look of the tiling or that of wood.
  • the installation includes a conveyor 10 capable of transporting a plurality of blades.
  • the conveyor is generally in the form a conveyor belt, in one or more sections, on which the blades, and which allows you to transport these blades through the different installation stations.
  • the installation also includes a station 12 of separation of the blades, which is adjacent to the conveyor and located upstream of this last.
  • the slides initially stored on a pallet 14 are successively introduced into the separation station 12, possibly using a depalletizer, and this station 12 places them in a position target, in which a plurality of blades are ready to supply the conveyor.
  • the exit from the separation station is located near the entrance of the conveyor 10.
  • the installation notably includes a station 16 which is located on the conveyor path and which has at least a printing unit 18, used to apply ink to the face upper of the blades passing through this station.
  • the station contains several printing units successively arranged in the path of the blades, to each apply a color different.
  • the first unit 18 can be used to give a background color on the surface of the slats, while units 20 and 22 will successively realize two types of patterns of different colors.
  • the installation may include a brushing station 24 in which the upper faces of the blades are brushed and cleaned to form a viable support for the color they will receive in the printing station.
  • the installation also includes a guide station 26 arranged, on the path of the blades driven by the conveyor upstream of the station printing. More precisely, this station 26 is located, at least in part, downstream of the brushing station 24 and serves to correct the position of the slides to approach the printing station in their target position. Indeed, the treatment that the blades undergo in the brushing station can cause slight displacements which must be corrected in the station guide. Whether the brushing station is present or not, it is useful to check or correct the positioning of the blades before the station printing station, which makes the guiding station 26 necessary.
  • the installation Downstream of the printing station 16, the installation comprises one or more several varnishing stations 28 and a varnish fixing station 30, for example by ultraviolet.
  • the installation includes a system of transfer 32, which is used to load the blades on the pallets 34.
  • This station includes means for maintaining a plurality of blades in a target position, in which they are apart, parallel and arranged so that their direction longitudinal D is parallel to the direction of advancement F of the conveyor 10.
  • This separation station also includes the means for bringing the blades occupying their target position up to the conveyor.
  • the separation station includes means transverse drive capable of exerting an action on the blades to move them in a direction G substantially perpendicular to the direction F of conveyor advance.
  • blades 8 are still arranged on the pallet 14 upstream of the separation station, and four blades 8a, 8b, 8c and 8d are arranged in this station, in their target position.
  • the transverse drive means include belts 36 parallel to each other and perpendicular to the conveyor. The blades unloaded from the pallet are therefore placed on the belts 36 which lead to the downstream edge of the separation station which is opposite to its Entrance.
  • the station separation comprises several series of stop means.
  • Those of the first series are found near the downstream edge of the station. They may for example consist of several vertical rollers 38 free to rotate relative to their axes but vertically fixed, against which cooperate in abutment a longitudinal edge 9a of the first blade 8a. Of course, the rollers 38 are aligned in the direction F of moving the conveyor.
  • the other series of stop means are successively arranged in the direction G 'going opposite to the direction G.
  • the separation station has four series of stop means, capable of holding four blades in their target position.
  • the stop means of series 1 to 4 are respectively numbered 38, 40, 42 and 44.
  • the stop means 38 of the first series cooperate with the first longitudinal edge 9a of the first blade 8a, while the means stop 40 of the second series cooperate with the second edge longitudinal 9b of the first blade 8a and with the first longitudinal edge 9c of the second blade 8b.
  • the stop means 42 of the third series cooperate with the second longitudinal edge 9d of the blade 8b and with the first longitudinal edge 9e of the third blade 8c, while that the means 44 of the fourth series cooperate with the second edge 9f of blade 8c and with the first edge 9g of blade 8d.
  • the separation station comprises n series of stop means, n being an integer at least equal to two.
  • the first series is that which, in the direction of advance G of the transverse drive means 36, is located most downstream of the separation station.
  • the n th series is that which, in the direction G, is the most upstream of the separation station, that is to say the closest to the entrance.
  • the stop means of two consecutive series are spaced from each other by a distance substantially equal to the width l of a blade.
  • FIG. 3a is a schematic view taken in direction III of the Figure 2.
  • the stop means 40, 42 and 44 of series 2 to 4 occupy their retracted position, i.e. they are vertically below the upper faces of the belts 36 on which can be installed.
  • FIG. 3c which is a view in a direction similar to that of FIG. 3a, the means stop 40, 42 and 44 all occupy their active stop position and cooperate with the blades 8a, 8b, 8c and 8d.
  • the separation station 12 further comprises n-1 means actuation for the stop means of series 2 to n. These means actuators are respectively numbered 46, 48 and 50.
  • the operation of these actuating means is as follows.
  • the k th actuation means (k being an integer varying from 1 to n-1) is capable of leaving the abutment means of the k + 1 th series in their retracted position as long as no blade is present in the interval between the k th and the k + 1 th series and to request these abutment means to bring them into their active abutment position when a blade is in this interval.
  • FIG. 3a it can be seen in FIG. 3a that the stop means 40 of the second series occupy their inactive position and that no blade is present in the interval between the stop means 38 and 40.
  • FIG. 3b a blade 8a is located in this interval, and the first actuating means 46 has requested the abutment means 40 of the second series in their active position, so that the first blade 8a is held in abutment between the means 38 of the first series and those 40 from the second series.
  • no blade is found in the interval between the second and third series of stop means 40 and 42, and the stop means of the third series still occupy their inactive position.
  • the second actuation means 48 will request these stop means 42 to bring them into their active position.
  • the separation station includes longitudinal drive means which exert an action on the blades to move them parallel to the direction of travel F from the conveyor to the latter.
  • the separation station includes means recovery which, when the blades occupy their target position in this station, are able to stop the action of the drive means transverse on these blades and to start the action of the means longitudinal drive.
  • the longitudinal drive means comprise at least one drive roller 52 mounted rotating around an axis 53 parallel to the direction G.
  • this roller 52 can be constantly driven at the same speed as the speed advancement of the conveyor 10. In this case, it can occupy a position retracted, for example below the horizontal level of the belts 36 transverse transport, during the feeding of the separation station in blades and placing the blades in their target position.
  • the means of recovery then comprise a capable system, when the blades occupy their target position, move the roller 52 vertically to do so mount until contact with the lower faces of the blades which allows advance the latter in the longitudinal direction F.
  • the action of the roller 52 on the blades then predominates over the action of the belts 36. It is therefore not no need to stop the movement of the belts 36 or move them to stop their action on the blades.
  • This displacement system vertical of the roller can be of all types, for example hydraulic or mechanical.
  • the roller 52 can be constantly located at the same horizontal level as the belts 36, but be stopped as long that the blades do not occupy their target position.
  • the means of recovery including for example a clutch system, are used to drive the roller 52 in rotation when the blades occupy their position target, which allows these blades to advance in direction F. This time still, it is not necessary to stop the movement of the belts 36 to stop their action on the blades.
  • the recovery means advantageously comprise a detector for the presence of a blade upstream of the nth series of stop means, such a detector is designated by the reference 54 in the figures.
  • a detector for the presence of a blade upstream of the nth series of stop means is designated by the reference 54 in the figures.
  • This detector 54 is connected to the actuation means of the recovery means, for example to the means for controlling the vertical movement of the roller 52, and therefore makes it possible to initiate the action of the roller 52 on the blades as soon as the last blade occupies its position.
  • These actuating means are shown diagrammatically by a housing 59 in FIG. 3a.
  • the means for actuating the movable stop means 40, 42 and 44 of series 2 to n advantageously include detectors analogous to detector 54 and respectively numbered 56, 58 and 60.
  • the detectors can consist of photoelectric cells or electropneumatic sensors capable of emitting a signal of presence of blades which drives the control of the actuation means of the displacement of the stop means.
  • the detectors include a contactor 62 whose position is affected by the presence of a blade.
  • each stop means can be constituted by a piston 65 vertically movable relative to a cylinder 66, connected to a compressed air source 68 via a air duct 70.
  • the actuating means can be interposed on the pipes 70 which connect the source of compressed air to each cylinder, and be constituted by a valve which is closed when no blade is detected, and which opens on reception of a control signal transmitted by a line 57 connecting it to a detector, when this detector finds the presence of a blade.
  • other actuation means can also be used.
  • the actuating means can be connected to blade presence detectors located in each interval between two consecutive series of stop means, and can include means for moving the stop means of each series between their retracted position and their active position, and means of control of these displacement means, connected to the presence.
  • the separation station further includes means for retract the retractable stop means of series 2 to n after departure blades from this station.
  • the actuation means 46, 48 and 50 can all be connected to a manually actuated control system. However, if the presence detector of the n th blade is provided, the retraction of the stop means of the series 2 to n can also be controlled by this detector.
  • lines 55 connect the means 46, 48 and 50 to the housing 59. This can therefore, as indicated previously, activate the drive by roller 52, but also for example at the expiration of a given period of time after reception of the signal emitted by the detector 54, controlling the means actuation 46 and 48 and 50 in the direction of retraction of the means of stop 40, 42 and 44.
  • FIGS. 3a to 3c it can be seen that the upper ends of the pistons 65 of the retractable stop means are tapered. These pistons thus have a spacer ramp 65a, advantageously raised towards upstream in the direction of advancement of the transverse drive means, which allows to separate two blades if they are too close together.
  • each series has several means stop formed by separate bodies.
  • a stop means by series produced in the form of an elongated member, parallel to direction F.
  • the guide station 26 includes bracing guides 64, 66, 68, 70 and 72 which are capable of cooperating with the blades, in the vicinity of their longitudinal edges, to that these blades slide between the guides and are thus forced to occupy their target position before entering the printing station 16.
  • the spacing between two consecutive bracing guides is substantially equal to the width l of a blade. If, as indicated above, the separation station comprises n series of stop means, the guide station advantageously comprises n + 1 bracing guides aligned transversely to the conveyor.
  • the guide 64 can cooperate with the first longitudinal edge 9a of the first blade 8a, while the guide 66 can cooperate with the second edge 9b of the first blade 8a and with the first edge 9c of the second blade 8b. Finally, the guide 72 can, for its part, cooperate with the second edge 9h of the last blade 8d.
  • the guide station 26 advantageously comprises at least one first and second series of bracing guides, respectively designated by the references 74 and 76 in FIG. 4.
  • the guides of the two series are analogous.
  • the guides of each series are aligned transverse to the direction of advance F of the conveyor.
  • the second series includes as many bracing guides as the first. More precisely, each guide in one of the two series corresponds to a guide of the other series which is aligned with it in the direction of advancement F of the conveyor.
  • the distance L1 between the two series of guides 74 and 76, measured parallel to direction F, is less than the length L2 of blades (see Figure 2). So when the blades pass between the guides bracing, they can be simultaneously guided in two places distinct over their length. Their direction is therefore exactly aligned with the direction F.
  • the brushing station 24 can be arranged upstream of the guide station 26. It can however, as indicated by reference 24 'in figure 4, be placed between the two series 74 and 76 of guides. There can also be a station at this location pre-printing or, more generally, a station for preparing the surface of the blades.
  • the conveyor may include a first section 10a located at upstream of the first series 74, a second section 10b located between the two series, and a third section 10c, located downstream of the second series 76.
  • the section 10c may extend to the downstream end of the installation or only up to the entrance of the printing station 16, and be followed by a or several other sections.
  • the guides bracing can be fixed on bars 78 arranged transversely to the direction of travel F vertically fixed, and arranged in the intervals between sections 10a and 10b on the one hand, and 10b and 10c on the other hand.
  • the bracing guides advantageously have thin upstream ends and go in deviating downstream in the direction of travel F of the conveyor.
  • the figures 5 and 6 show for example the guide 68.
  • Its upstream edge 80 consists by an oblique edge raised downstream. From this edge, two faces 82 and 84 flare downstream to two facets, respectively vertical 86 and 88. Thanks to this conformation, the bracing guides have a natural tendency to spread the blades if they present themselves too much close to each other in the guide station.
  • the edge 80 being oblique, the blades can be properly spread, even if they are slightly raised in relation to conveyor 10.
  • the station advantageously includes means of coordination positions of the slides before entering the printing station. These means are designated in Figure 1 by the general reference 90 and are shown in more detail, albeit schematically, in Figure 7. On this figure is visible the downstream part of the section 10c of the conveyor as well as the upstream part of a section along 10d. To simplify, we only have schematically the first printing unit 92 of the printing station 16. It includes an ink spout 94 indicated in dashed lines, a rotary printing cylinder 96, and an ink distribution counter cylinder 98. The cylinder 96 is rotated at a tangential speed equal to the forward speed of the conveyor 10.
  • the means of coordinating the positions of the blades before their entry in the printing station 16 include retractable members of front stop 100, 102, 104, 106, which are likely to adopt a position retracted in which the blades escape them, and an active position of stop (shown in Figure 7) in which they are able to cooperate in stop with the front ends 7a, 7b, 7c, 7d of the blades 8a, 8b, 8c and 8d, and in which they occupy positions relative to each other determined.
  • the means of coordination also include means 108 for controlling the front stop members between their positions retracted and active.
  • the retracted position of the front stop members may be a position in which they are raised relative to the conveyor, so that the blades pass under these stop members without touching them.
  • the control means of these stop members are then capable of lower to bring them into a position in which they are close enough to the conveyor to block the blades.
  • these abutment members the same way that those of the separation station, in which case their position retracted would be the one in which they are below the horizontal level of the conveyor, while they would be slightly raised to occupy their active position.
  • the advantage of the configuration of FIG. 7 lies in the fact that it is compatible with the production of the section 10c of the conveyor in the form of a continuous mat.
  • the front stop members can, as in the example of the Figure 7 be constituted by separate bodies, each of which cooperates with the front edge of a blade. They can thus be mounted independently each other or two by two (as in the example shown) on means for adjusting their positions, capable of being moved horizontally parallel to the direction of travel of the conveyor.
  • the front stop members 100 and 102 are mounted on a first crossbar 109, while the members of stop 104 and 106 are mounted on a second transverse bar 110.
  • These two bars, or only one of them can be mobile, which allows to adjust the positions of organs 100 and 102 on the one hand, and that of organs 104 and 106 on the other hand, so as to offset the blades one by compared to others. This makes it possible to obtain offset patterns on the blades, even if the prints on the print cylinder are not.
  • coordination means makes it possible to know exactly the relative positions of the front edges of the different blades present on the conveyor.
  • these means of coordination also serve to synchronize the advancement of the blades with the rotation of the printing cylinder 96.
  • the installation includes means marking device for locating at least one angular position of the cylinder printing means and for transmitting a locating signal to control means 108 of the front stop members.
  • a disc 112 is integral with the axis 114 of the cylinder 96. This disc bears, on a determined area of its periphery, a reference 116.
  • a proximity sensor 118 is placed in the vicinity of the disc.
  • a signal is transmitted to the control means 108 by via a transmission means 120. If, on reception of this signal, the front stop means occupy their active stop position, and if all the blades are present at this moment against the stop members, the control means 108 can retract the stop members so that that all the blades can start advancing at the same time and all reach under the printing cylinder 96 at some point corresponding to a known angular position of this cylinder, so that the patterns made in the print station can all start to a determined location of the blades relative to their front edges.
  • the means of coordination advantageously include means for detecting the presence of blades in the region of the conveyor, located in the vicinity and upstream of the front stop members when they occupy their active position.
  • these means of coordination include means for transmitting to control means 108 of the stop members before a signal of detection emitted by the detection means.
  • Figure 7 shows the possible locations of such detection means produced in the form of sensors which can be analogous to those of the separation station. The sensors are connected to the control means 108 by means of transmission 122. These control means 108 can therefore control the retraction of the abutment members when both a detection signal and a locating signal is transmitted by the sensors and by the detector 118.
  • the control means 108 can act on these stopper in their active position. However, if one of the sensors 101 to 107 detects the presence of a blade, it prevents the active positioning of the stop members to prevent them from damaging a blade present on the conveyor 10c. In this case, the detection signal transmitted to the control means 108 prevents the active positioning of the members stop. If, on the other hand, no blade is detected, the absence of a signal detection or transmission of a non-detection signal to the means of command allows the latter to request the stop members in their active position. Then, the different blades present in the conveyor naturally come to cooperate in abutment with the abutment members.
  • the detector 118 detects a angular position of the printing cylinder allowing the advancement of blades, a locating signal is transmitted to control means 108 which can then control the retraction of the stop members.
  • the conveyor can remain in motion during all these operations.
  • the section 10c can extend continuously without interruption before the printing station.
  • advantage is taken of the control means of the conveyor, capable of controlling the advancement and stopping of the conveyor, or at least its section 10c.
  • the installation includes means 126 for transmitting a signal to these control means 124 detection emitted by the means for detecting the presence of blades (sensors 101, 103, 105, 107) as well as a locating signal emitted by the identification means (reference 116 and proximity sensor 118), as well as a position information signal (retracted position or active position) front stop members.
  • These means of transmission can be consisting of all types of power lines, infrared transmissions or others. To simplify in the example of Figure 7, there are shown transmission lines which connect the different means of detecting the presence of the blades, identification of the angular position of the cylinder, and conveyor controls, to means 108 for controlling the organs of front stop.
  • control means 124 of the conveyor are likely to order the stop of this conveyor or rather of section 10c, when, the front stop members being in their position active, the detection means (101, 103, 105 and 107) detect the presence of blades, which means that blades are effectively in abutment against the front stop means. It is only after receiving the signal tracking issued by the tracking means, that the conveyor will be reset movement and the stop means will be retracted. This avoids any slippage of the blades relative to the conveyor during the retraction of the stop means. This ensures that their respective positions are not in any way modified from each other to this opportunity.
  • the distance D1 between the most advanced blades and the cylinder 96 is determined so that the path of the blades, after the retraction of the abutment means, is sufficiently long (in function of the acceleration curve of the conveyor restarted by the control means 124) so that the speed of these blades approaching the impression cylinder is equal to the constant tangential speed of this cylinder.
  • the section 10c of the conveyor stops slightly in upstream of the printing station, station under which a new section Conveyor 10d is present, so that the stopping of the section 10c does not affect the transport of the blades beyond.
  • sections of guide rails 130, 132, 134, 136 and 138 may also be provided in the region of the organs front stop, to cooperate with the longitudinal edges of the blades in the region of their front ends.
  • these sections guide rails are integral in movement with the stop members before.
  • they can be mounted on the same chassis 140 vertically movable and controlled by the control means 108.
  • the upstream edges 139 of the rail sections can be tapered or even generally similar to the upstream edges of the bracing guides previously described with reference to Figures 4 to 6.
  • the printing of the upper face of the blades can be an opportunity to slight displacements of these blades.
  • the installation advantageously includes guide recovery means in the region of this station 16.
  • the guiding recovery means are located between these two printing units.
  • FIG. 8 shows an exemplary embodiment of such means of resumption of guidance, arranged upstream of the second printing unit 20 and downstream of the first 18 (not shown).
  • guidance resumption means are very close to the printing station, even inside the latter, it is important to avoid that they are too coercive since too sudden reseating of the blades could harm the quality of the print.
  • these recovery means include a plurality of cylinders 142.
  • cylinders 142 Preferably, we obviously choose to have as many cylinders 142 as there are sections of rails or guides bracing in a series.
  • the axes of the cylinders 142 are parallel to the advancement direction F of the conveyor.
  • these cylinders are mounted on a bar 144, directed transversely and mounted on bearings 146 so as to be able to pivot freely. In however, the rear ends of the cylinders naturally rest on the conveyor.
  • cylinder when the blades are present in the vicinity of the cylinders 142, they can pass normally between these or, if they have been moved when they are printed, be replaced.
  • a blade moved arrives in the vicinity of a cylinder, it can lift slightly and, its convex face cooperating with the longitudinal edge of the blade, replace it gradually.
  • cylinder we used the generic term "cylinder" to describe the elements 142, it should be understood that it can be of whole or partial cylinders or of any equivalent element having a convex face or even suitably profiled wheels.
  • the step of separating the blades makes it possible to arrange them in a target position in which they are spread apart and parallel to the direction of advancement F of the conveyor 10. This target position is kept during the blades are brought to the conveyor and the blades are guided upstream of the printing station during a guiding step, so that check that they are in their target position or correct their position if not.
  • the blade guiding step advantageously uses two series of guides spaced, according to the direction of travel of the conveyor, by a distance less than the length L2 of the blades.
  • the blades are first driven transversely and n blades come successively in abutment against n series of abutment means.
  • the means of stopper of each series being aligned parallel to direction F advancement of the conveyor.
  • a step of longitudinal drive of these blades to the conveyor comes a step of longitudinal drive of these blades to the conveyor.
  • the method advantageously includes a step of coordination of blade positions before entering the station 16. This step includes adjusting the positions of the front ends of the blades relative to each other, for example at using retractable stop means.
  • the method then advantageously comprises a step of synchronization of the arrival of the blades in contact with this rotary cylinder by relative to the angular position of the cylinder.
  • This synchronization step includes the identification of an angular position of the cylinder, and the command advancement of the blades, for example by retracting the stop means before and, possibly, by resuming the advancement of the conveyor previously arrested.
  • the synchronization step can therefore include stopping the conveyor when the positions of the front ends of the blades are adjusted relative to each other (when these ends cooperate with the stop means) and restarting the conveyor advance in function of the angular position of the rotary printing cylinder.

Landscapes

  • Discharge By Other Means (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Screen Printers (AREA)

Claims (18)

  1. Anlage zum Dekorieren von Profillamellen, mit einem Förderer (10), der eine Vielzahl Lamellen zu transportieren vermag, und einer Druckstation (16) mit wenigstens einer Druckeinheit zum Auftragen von Druckfarbe auf die Oberfläche der Lamellen,
    dadurch gekennzeichnet, daß sie umfaßt:
    eine Station (12) zum Trennen der Lamellen, die an den Förderer (10) angrenzt und in Arbeitsrichtung vor diesem angeordnet ist, wobei diese Trennstation Einrichtungen (38, 40, 42, 44) zum Halten einer Vielzahl Lamellen in einer Zielstellung umfaßt, in der die Lamellen (8a, 8b, 8c, 8d) auseinandergerückt, parallel und so angeordnet sind, daß ihre Längsrichtung (D) zur Vorschubrichtung (F) des Förderers parallel ist, und Einrichtungen (52) zum Verbringen der die Zielstellung einnehmenden Lamellen zum Förderer,
    und dadurch, daß sie umfaßt: wenigstens eine Führungsstation (26), die in der Bewegungsbahn der vom Förderer bewegten Lamellen in Arbeitsrichtung vor der Druckstation (16) angeordnet ist, wobei diese Führungsstation abstandhaltende Führungen (64, 66, 68, 70, 72) aufweist, die zum Zusammenwirken mit den Lamellen (8a, 8b, 8c, 8d) in der Umgebung von deren Längsrändern geeignet sind, damit die Lamellen zwischen diesen Führungen gleiten und gezwungen sind, ihre Zielstellungen vor dem Einlaufen in die Druckstation einzunehmen.
  2. Anlage nach Anspruch 1,
    dadurch gekennzeichnet, daß die Führungsstation wenigstens eine erste und eine zweite Gruppe (74, 76) abstandhaltende Führungen aufweist, wobei die abstandhaltenden Führungen (64, 66, 68, 70, 72) jeder Gruppe quer zur Vorschubrichtung (F) des Förderers (10) ausgerichtet sind,
    daß jeder abstandhaltenden Führung einer Gruppe aus der ersten und zweiten Gruppe eine Führung der anderen dieser Gruppen entspricht, wobei diese einander entsprechenden Führungen nach der Vorschubrichtung des Förderers ausgerichtet sind, und
    daß die parallel zur Vorschubrichtung des Förderers gemessene Entfernung (L1) zwischen den beiden Führungsgruppen kleiner als die Länge (L2) der Lamellen ist.
  3. Anlage nach einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, daß die abstandhaltenden Führungen (64, 66, 68, 70, 72) in Arbeitsrichtung hintere dünne Enden (80) aufweisen und sich stromabwärts in der Vorschubrichtung (F) des Förderers (10) erweitern.
  4. Anlage nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß die Trennstation (12) Querantriebseinrichtungen (36), die zum Einwirken auf die Profillamellen zum Fortbewegen derselben im wesentlichen rechtwinklig (G) zur Vorschubrichtung (F) des Förderers (10) geeignet sind, und n Gruppen Anschlageinrichtungen aufweist, wobei n eine ganze Zahl nicht kleiner als 2 ist, die erste Gruppe (38) die Gruppe ist, welche sich, bezogen auf die Vorschubrichtung (G) der Querantriebseinrichtungen (36), am weitesten stromabwärts von der Trennvorrichtung (12) befindet, wogegen die (n)-te Gruppe (44) die Gruppe ist, die sich, bezogen auf die gleiche Richtung, am weitesten stromaufwärts von der genannten Station befindet, die Anschlageinrichtungen von zwei aufeinanderfolgenden Gruppen durch einen Abstand voneinander entfernt sind, der im wesentlichen der Breite (1) einer Lamelle gleich ist, die Anschlageinrichtungen (40, 42, 44) der Gruppen 2 bis n eine Freistellung, in der sie sich. außerhalb der Bewegungsbahn der Lamellen (8) in der Trennstation (12) befinden, und eine aktive Anschlagstellung einzunehmen vermögen, in der sie sich in dieser Bewegungsbahn befinden und in der Lage sind, mit den Lamellen zusammenzuwirken,
    ferner dadurch, daß die Trennstation außerdem (n-1) Betätigungseinrichtungen (46, 48, 50) für die Anschlageinrichtungen (40, 42, 44) der Gruppen 2 bis n aufweist, bei denen, mit k als ganze Zahl zwischen 1 und (n-1), die (k)-te Betätigungseinrichtung (46; 48; 50) in der Lage ist, die Anschlageinrichtungen (40; 42; 44) der (k+1)-ten Gruppe in ihrer Freistellung zu belassen, so lange sich keine Lamelle im Zwischenraum zwischen der (k)-ten und der (k+1)-ten Gruppe (40, 42; 42, 44; 44; 46) befindet, und diese Anschlageinrichtungen in ihre aktive Anschlagstellung zu verbringen, wenn sich eine Lamelle im genannten Zwischenraum befindet, wobei die Trennstation ferner Längsantriebseinrichtungen (52), die geeignet sind, auf die Lamellen einzuwirken, um sie parallel zur Vorschubrichtung (F) des Förderers bis zu diesem fortzubewegen, und Wiederaufnahmeeinrichtungen aufweist, die, wenn die Lamellen ihre Zielstellung in der Trennvorrichtung einnehmen, die Wirkung der Querantriebseinrichtungen (36) auf die Lamellen beenden und die Wirkung der Längsantriebseinrichtungen (52) auf diese Lamellen auslösen.
  5. Anlage nach Anspruch 4,
    dadurch gekennzeichnet, daß die Betätigungseinrichtungen (46, 48, 50) mit Detektoren (56, 58, 60) zum Feststellen des Vorhandenseins von Lamellen verbunden sind, die in jedem Zwischenraum zwischen zwei aufeinanderfolgenden Gruppen der Anschlageinrichtungen (38, 40, 42, 44) angeordnet sind, und Einrichtungen (68, 70) zum Verstellen der Anschlageinrichtungen jeder Gruppe zwischen ihrer Freistellung und ihrer aktiven Stellung und Steuereinrichtungen (57) für diese Verstelleinrichtungen umfassen, die an die Detektoren zum Anwesenheitsfeststellen angeschlossen sind.
  6. Anlage nach einem der Ansprüche 4 und 5,
    dadurch gekennzeichnet, daß die Wiederaufnahmeeinrichtungen einen Detektor (54) zum Feststellen des Vorhandenseins einer Lamelle stromaufwärts von der (n)-ten Gruppe der Anschlageinrichtungen (44) umfassen.
  7. Anlage nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, daß sie Einrichtungen zum Koordinieren der Stellungen der Lamellen vor ihrem Einlauf in die Druckstation (16) aufweist, wobei diese Einrichtungen in Freistellung verbringbare vordere Anschlagorgane (100, 102, 104, 106) umfassen, die eine Freistellung, in der sie von den Lamellen (8a, 8b, 8c, 8d) vermieden werden, und eine aktive Anschlagstellung einzunehmen vermögen, in der sie als Anschlag mit den vorderen Enden (7a, 7b, 7c, 7d) der Lamellen zusammenzuwirken vermögen und in bezug aufeinander bestimmte Stellungen einnehmen, wobei die Koordinierungseinrichtungen außerdem Einrichtungen (108) zum Steuern der vorderen Anschlagorgane zwischen ihren Freistellungen und aktiven Stellungen aufweisen.
  8. Anlage nach Anspruch 7, in der die Druckeinheit (92) einen drehbaren Druckzylinder (96) aufweist,
    dadurch gekennzeichnet, daß sie Markierungseinrichtungen (116, 118) zum Markieren wenigstens einer Winkelstellung des Druckzylinders (96) und Einrichtungen (120) zum Übertragen eines Markierungssignals an die Steuereinrichtungen (108) der vorderen Anschlagorgane (100, 102, 104, 106) aufweist.
  9. Anlage nach Anspruch 8,
    dadurch gekennzeichnet, daß die Koordinierungseinrichtungen Einrichtungen (101, 103, 105, 107) zum Feststellen des Vorhandenseins von Lamellen in dem Bereich des Förderers aufweisen, der sich in der Nähe und stromaufwärts von den vorderen Anschlagorganen (100, 102, 104, 106) befindet, wenn diese ihre aktiven Stellungen einnehmen, und daß die Koordinierungseinrichtungen außerdem Einrichtungen (122) zum Übertragen eines von den Feststelleinrichtungen abgegebenen Feststellsignals an die Steuereinrichtungen (108) der vorderen Anschlagorgane umfassen.
  10. Anlage nach Anspruch 9, in der eine Einrichtung (124) zum Steuern des Förderers vorgesehen ist, die Vorschub und Stopp des Förderers (10c) zu steuern vermag,
    dadurch gekennzeichnet, daß sie Einrichtungen (120, 126) zum Übertragen an die Förderersteuereinrichtung (124) eines von den Einrichtungen (101, 103, 105, 107) zum Feststellen des Vorhandenseins von Lamellen abgegebenen Feststellsignals, eines von den Markierungseinrichtungen (116, 118) abgegebenen Markierungssignals und eines Auskunftssignals über die Freistellung oder die aktive Stellung der vorderen Anschlagorgane aufweist, wobei die Förderersteuereinrichtung (124) in der Lage ist, das Anhalten des Förderers zu steuern, wenn, in der aktiven Stellung der vorderen Anschlagorgane, die Feststelleinrichtungen das Vorhandensein von Lamellen feststellen, und den Vorschub des Förderers zu steuern vermag, wenn in der gleichen Situation die genannte Steuereinrichtung ein Markierungssignal empfängt.
  11. Anlage nach einem der Ansprüche 1 bis 10,
    dadurch gekennzeichnet, daß sie Einrichtungen (142, 144) zum Wiederaufnehmen der Führung im Bereich der Druckstation (16) aufweist.
  12. Anlage nach Anspruch 11,
    dadurch gekennzeichnet, daß die Druckstation (16) wenigstens zwei Druckeinheiten (18, 20, 22) umfaßt, die in der Vorschubrichtung (F) des Förderers hintereinander angeordnet sind, und daß die Einrichtungen (142, 144) zum Wiederaufnehmen der Führung zwischen den beiden Druckeinheiten (18, 20; 20, 22) angeordnet sind.
  13. Verfahren zum Dekorieren von Profillamellen, einschließend den Transport der Lamellen (8) auf einem Förderer (10) und das Auftragen von Druckfarbe auf die Lamellenoberfläche mit wenigstens einer zu einer Druckstation (16) gehörenden Druckeinheit (18, 20, 22),
    dadurch gekennzeichnet, daß es umfaßt: einen Schritt des Trennens der Lamellen und des Anordnens einer Vielzahl Lamellen (8a, 8b, 8c, 8d) in einer Zielstellung, in der sie voneinander weggerückt, parallel und so angeordnet sind, daß ihre Längsrichtung (D) zur Vorschubrichtung (F) des Förderers parallel ist, einen Schritt des Verbringens der die Zielstellung einnehmenden Lamellen zum Förderer, und einen Schritt des Führens der vom Förderer mitgenommenen Lamellen stromaufwärts von der Druckstation (16) mit Ausrichteführungen (64, 66, 68, 70, 72), die mit den Lamellen an deren Längsrändern zusammenzuwirken vermögen.
  14. Verfahren nach Anspruch 13,
    dadurch gekennzeichnet, daß der Schritt des Führens der Lamellen von zwei Gruppen (74, 76) Führungen durchgeführt wird, die in der Vorschubrichtung des Förderers in einem Abstand (L1) angeordnet sind, der kleiner als die Länge L2 der Lamellen ist.
  15. Verfahren nach einem der Ansprüche 13 und 14,
    dadurch gekennzeichnet, daß der Schritt des Trennens der Lamellen einen Schritt des Querantreibens im wesentlichen rechtwinklig (G) zur Vorschubrichtung (F) des Förderers (10) stromaufwärts von letzterem einschließt, einen Schritt des aufeinanderfolgenden Anschlagens von in Querrichtung angetriebenen n Lamellen (8a, 8b, 8c, 8d) an n Gruppen von Anschlageinrichtungen (38, 40, 42, 44), wobei n eine ganze Zahl nicht kleiner als 2 ist, die Anschlageinrichtungen jeder Gruppe zur Vorschubrichtung (F) des Förderers parallel sind, und einen Schritt des Längsantreibens der Lamellen parallel zur Vorschubrichtung (F) des Förderers und bis zu diesem.
  16. Verfahren nach einem der Ansprüche 13 bis 15,
    dadurch gekennzeichnet, daß es einen Schritt des Koordinierens der Stellungen der Lamellen vor deren Einlauf in die Druckstation (16) umfaßt, mit dem Regulieren der Stellungen der vorderen Enden (7a, 7b, 7c, 7d) der Lamellen (8a, 8b, 8c, 8d) in bezug aufeinander.
  17. Verfahren nach Anspruch 16, bei dem der Schritt des Auftragens von Druckfarbe auf die Oberfläche der Lamellen das Aufnehmen der Berührung der Lamellenoberfläche mit einem zur Druckeinheit (18) gehörenden drehbaren Druckzylinder (96) einschließt,
    dadurch gekennzeichnet, daß es einen Schritt des Synchronisierens der Berührungsaufnahme der Lamellen mit diesem drehbaren Zylinder mit der Winkelstellung des genannten Zylinders umfaßt.
  18. Verfahren nach Anspruch 17,
    dadurch gekennzeichnet, daß der Synchronisationsschritt das Anhalten des Förderers (10c) umfaßt, wenn die Stellungen der vorderen Enden (7a, 7b, 7c, 7d) der Lamellen aufeinander abgestimmt werden, und das Neustarten des Vorschubs des Förderers (10c) in Abhängigkeit von der Winkelstellung des drehbaren Druckzylinders (96).
EP97400847A 1996-04-15 1997-04-15 Einrichtung und Verfahren zum Dekorieren von Profillamellen Expired - Lifetime EP0802136B1 (de)

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FR9604657 1996-04-15
FR9604657A FR2747341B1 (fr) 1996-04-15 1996-04-15 Installation et procede pour la decoration de lames profilees

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EP0802136B1 true EP0802136B1 (de) 2001-08-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2000313A2 (de) 2007-06-04 2008-12-10 Durst Phototechnik Digital Technology GmbH Verfahren zum Bedrucken von Plattenmaterial

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US11465405B2 (en) * 2013-04-10 2022-10-11 Voith Patent Gmbh Device for generating a pattern on a clothing for a machine for manufacturing a web material

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US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
US4460429A (en) * 1982-08-25 1984-07-17 The D. L. Auld Company Apparatus for manufacturing foil shapes having a cast plastic cap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2000313A2 (de) 2007-06-04 2008-12-10 Durst Phototechnik Digital Technology GmbH Verfahren zum Bedrucken von Plattenmaterial
AT505463B1 (de) * 2007-06-04 2009-05-15 Durst Phototech Digital Tech Verfahren zum bedrucken von plattenmaterial

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US5852976A (en) 1998-12-29
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DE69705987T2 (de) 2002-04-04
EP0802136A1 (de) 1997-10-22
DE69705987D1 (de) 2001-09-13

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