EP0885124B1 - Machine de traitement notamment pour l'impression serigraphique d'un support - Google Patents
Machine de traitement notamment pour l'impression serigraphique d'un support Download PDFInfo
- Publication number
- EP0885124B1 EP0885124B1 EP97907167A EP97907167A EP0885124B1 EP 0885124 B1 EP0885124 B1 EP 0885124B1 EP 97907167 A EP97907167 A EP 97907167A EP 97907167 A EP97907167 A EP 97907167A EP 0885124 B1 EP0885124 B1 EP 0885124B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- machine according
- treatment machine
- assembly
- doctor blade
- 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
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0831—Machines for printing webs
Definitions
- the invention relates to the technical printing sector screen printing of all types of media but more particularly, all textile supports.
- screen printing is generally carried out by means of flat or rotary frames, on which is stretched and fixed a polyester fabric for flat frames and a film metal for rotating frames.
- Polyester or other fabric is previously coated with a photosensitive resin to allow engraving of the drawing to be printed.
- the engraving technique is carried out always by printing the photographic resin, for example at using a laser.
- each frame corresponds to a color, so that to compose a multi-color design, the number of frames must match the number of colors.
- an amount of one color determined is poured into the frame to be transferred to the fabric under the mechanical action of a doctor blade which is shaped to push, under the effect of its translational displacement, the color across polyester fabric or metal film mesh.
- each frame is installed on the machine in a sequence determined by being subject to means for being moved step by step along a table support on which the fabric to be printed is placed. Every color change, the frame must be removed from the machine and washed. he is then necessary to install a new frame for printing of a new color.
- the object of the invention is to remedy these drawbacks in a simple, safe, efficient and rational way.
- the problem which the invention proposes to solve is to realize a universal machine particularly suitable for printing screen printing of all textile supports with the objective of remove the multiplicity of print frames and therefore the many disadvantages resulting therefrom.
- the support assembly is mounted with displacement capacity in guided translation along a table receiving the fabric flat, the rollers storage and transfer being arranged parallel to the direction of displacement so that the tool moves transversely relative said fabric.
- the film is microperforated and is covered with a photosensitive resin or not, the tool being constituted by a doctor blade arranged to transfer colored ink onto the fabric through microperforations of the film.
- the latter consists of a plurality of distinct zones each corresponding to a color, each of said zones being separated by a neutral zone.
- Another important problem to be solved the invention is to modify the design of the doctor blade and the very principle to deposit the color on the support.
- the scraper acts as a reservoir and is connected to a pressure system for color ink to send it through a slit on the fabric to be printed, through the microperforated film.
- the advantage of not pressing on the frame is to avoid deformations that can influence the accuracy of the impression, to have less wear on the parts in contact by friction, to be able to adjust the pushing pressure on the color in increasing or decreasing penetration on the tissue, and increasing the scraping speed.
- the doctor blade is connected to washing means under form of containers, containing water, arranged to direct it to inside the scraper.
- the color is contained in small containers that can be used for weighing. On these small containers is fixed, each time, a cover to which are connected an air inlet and a pipe which brings color after scraping.
- the air inlet is tangential to the wall of the tank, so as to allow, during the washing phase, to suck the water by means of a venturi tube and push it tangentially on the inner wall by increasing the efficiency of washing. After reaching a certain level, the water passes in the pipe which brings the color to the scraper, thereby washing the pipe and the inner part of said doctor blade and, when the film moves for frame change, also washing the film.
- doctor blade Given the design of the doctor blade, the latter can also be applied in the case of a printing machine serigraphic, in accordance with the state of the art cited and current. In this in this case, the doctor blade washing can be carried out independently after having dismantled it.
- the film presents laterally perforated tracks cooperating with toothed wheels drive mounted near the receiving roller and storage in particular, as well as laterally to be guided throughout its length.
- each of the rollers is mounted in a removable cartridge and has temporary coupling arrangements with at least one geared motor for synchronous training and in a way sequential, of said rollers.
- the latter consisting of a carriage subject to step-by-step drive means along the table receiving the fabric, said drive means being integral with a part of the table and connected to the carriage by means of transmission determined for subject the truck to high acceleration.
- the carriage is fixed, the fabric, or other screen-printing support, moving relative to said carriage,
- the machine includes a frame support (B) in the form of a table on which the fabric (T) is placed to be screen printed. On this table, is mounted with capacity of displacement in guided translation, a support assembly (E).
- This assembly (E) constitutes a carriage (3) and is subject to means motorized couplings to be moved step by step along the table.
- the displacement of the assembly (E) is carried out by means a drive member (1) fixed on a part of the frame.
- This driving organ (1) is connected by all known and appropriate transmission systems (2), belt type for example, to assembly (E).
- the drive engine (1) being independent of the carriage (3), the latter benefits from a weight reduced and can be subjected to high accelerations, which is important for productivity.
- the assembly (E), including the carriage (3), has the general shape of a frame whose sides lateral (3a) (3b), parallel to the direction of movement of said assembly, are arranged for detachably mounting two cartridges support (4) and (5).
- the cartridge (4) receives a storage roller (6) on which is wound a film (7) in the form of a thin film of a semi-rigid material.
- the roller (6) is slaved to a geared motor assembly (8) for its rotational drive.
- the cartridge (5) receives a take-up roller (9) intended to receive the film (7) as it moves.
- the roller (9), in the same way as the roller (6), is slaved to a geared motor (10) to be rotated.
- the take-up roller (9) is not necessarily removable, the film (7) can be rewound in the storage roller (6).
- the gearmotors (8) and (10) are trained simultaneously in a perfectly coordinated manner, thus avoiding exerting any tensile force on the film.
- the geared motors (8) and (10) are subject to all electronic control circuit to be driven angularly, in synchronism, sequentially, according to a predetermined value corresponding to the desired advance of the film (7).
- each of said rollers (6) and (9) has temporary coupling arrangements with the gear motor corresponding (8) and (10).
- the film drive between the two rollers (6) and (9) takes place for example by means of perforated tracks (7a) formed near the longitudinal edges of the film. These tracks cooperate with cogwheels (17) and (18) arranged at the level of the cartridge (5) where the take-up roller (9). Likewise, a toothing is arranged laterally at each side of the carriage, to guide the film over the entire length.
- the wheels (17) and (18) are for example driven in rotation and in synchronism with the roller (9).
- rollers (6) or (9) can be motorized.
- the motorized roller is coupled to the other roller, by any known and appropriate transmission system to cause, concomitantly, its rotational drive.
- the film (7) is previously engraved by producing a plurality of distinct and continuous areas (7b).
- Each zone (7b) consists of a plurality of microperforations corresponding to a color of a pattern desired as will be described in the following description.
- the etching takes place after coating the film (7) with a resin photosensitive fixed by light or not which will be burned by a laser.
- the entire film (7) can be subjected to the action of a nickel bath.
- Each zone (7b) is separated by a neutral zone (7c).
- the length of the film presents a number of zones (7b) in particular, corresponding to the number of colors of the design to be printed.
- the transverse edges (3c) and (3d) of the carriage (3) constitute parallel guideways for mounting with capacity displacement of a tool (O).
- This tool (O) is moved transversely relative to the fabric while remaining parallel to the rollers (6) and (9).
- the tool (O) is mounted in a support cooperating with a system rollers with a profiled rail presented by the guide tracks (3c) and (3d).
- the entire support is subject to a drive member to be moved between the rollers (6) and (9), in a forward and backward movement return.
- the tool (O) is constituted by a doctor blade (13).
- the doctor blade (13) acts as tank (13a).
- the whole doctor blade (13) is connected to a delivery system. by pressing a color ink to send it through a slit continuous (13b) through the microperforated film (7), on the fabric to to print.
- the color may be contained in small containers (14) to which a cover is attached to which are connected an air inlet (15) and a pipe (16) which brings the color inside doctor blade (13).
- the slot (13b) can be compared to a line continuous microjets.
- the air intake takes place tangentially or substantially tangential to the inner wall of the color reservoir at transfer into the scraper.
- These provisions are important for allow cleaning of the doctor blade and the color tank. Indeed, the doctor blade is connected to a water tank so that during the phase of washing, the water is sucked from a pipe by means of a tube venturi and thrust tangentially on the internal wall of the tank thus increasing the efficiency of washing. After reaching a certain level, the water passes through the color supply pipe (16), thus allowing said pipe and the inner part of the doctor blade to be washed.
- These provisions also allow, as will be indicated below of the description, to wash the film (7) when the latter is rolled up value determined on the take-up roller (9).
- doctor blade (13) given its characteristics specific and inventive, is not necessarily linked to the basic concept of the printing machine as defined. Indeed, the doctor blade (13) can easily be used for printing classic screen printing using a plurality of frames independent.
- the film (7) corresponding to the different patterns to be printed, and therefore having a plurality of distinct and continuous zones (7b), is stored on the roller (6) which is placed in the cartridge corresponding (4).
- the film (7) is attached to the other receiving roller (9) by engaging the perforated tracks (7a) with the teeth drive (17) and (18).
- One of the zones (7b) is positioned, controlled manner, above the fabric (T), inside the frame (3), while that the reserve area (7c) which follows it is arranged close to one of the longitudinal edges of the fabric, on the outside of the table, and on the side of the take-up roller (9).
- the selected ink color is sent under pressure to the scraper tank (13a) (13). Obviously, sending under pressure the ink is carried out by any known and appropriate means making it possible to check the quantity and flow of ink.
- the doctor blade (13) is then moved along the transverse guide rails (3c) (3d) to deposit, concomitantly, an amount of ink on the area considered (7b) of the film (7).
- the ink is sent under pressure through microperforations to print the fabric accordingly (T).
- the doctor blade (13) When the doctor blade (13) reaches the end of the zone (7b), that is to say just before the zone (7c), this is automatically brought back or not by initial position, depending on the printing cycle. During this movement of return, the ink may or may not be interrupted. All of the carriage (3) is then moved laterally one step relative to the frame of the support table for printing the same area considered (7b) on an adjacent part of the fabric.
- doctor blade is then moved as indicated above to inject the ink under pressure through the microperforations of the film. These operations which are carried out in a fully automatic way, are repeated until the entire carriage (3) reaches the end of the fabric.
- the doctor blade is therefore related to a tank sending water under pressure. Air is sent tangentially on the internal wall of the tank (13a) to allow during this washing phase, suck up the water using the venturi tube and push it tangentially on said inner wall to increase washing efficiency. When a certain level of water is reached, the water passes through the pipe (16) which brings the color to the scraper (13), thereby washing said pipe and the lower part of the doctor blade.
- the film (7) is wound up to a determined length on the roll (9) to position a new area (7b) on the fabric (T).
- This winding has the effect of subjecting the area (7b) of the film having received, to the previous step, the color, to the action of the scraper to cause a concomitantly cleaning the film as it is winding.
- This operation is carried out during the return of the assembly of the carriage (3) in the initial position. The scraper then receives a new color.
- This cycle is repeated until the film (7) is transferred to all or not, depending on the type of use, on the take-up roller (9) corresponding to the successive and continuous positioning of the different areas (7b) of the patterns to be printed.
- the machine according to the invention can also be applied for etching the different areas (7b). It suffices to replace the doctor blade (13) with a other suitable type of tool, such as for example a laser. As previously, the film is transferred step by step from the roller (6) to the roller (9).
- the support table constitutes a rigid surface and laterally has a trough (19) deep suitable for containing the water drawn from the carriage (3) by means of a tube or breather during movement and a continuous chute used water discharge.
- this machine allows, by construction, to carry out other operations annexed to screen printing, such as by example the engraving of the film, its washing .... It is enough to equip the assembly (E), in particular the carriage (3) of the appropriate tool corresponding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coloring (AREA)
- Printing Methods (AREA)
- Screen Printers (AREA)
- Ink Jet (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Treatment Of Fiber Materials (AREA)
Description
- un ensemble support ;
- un rouleau de stockage d'un film sous forme d'une fine pellicule de matériau semi-rigide, monté avec capacité d'entraínement en rotation au niveau de l'un des côtés de l'ensemble;
- des moyens d'entraínement du film pour le transférer sur un rouleau récepteur monté sur l'ensemble, à l'opposé du rouleau de stockage, en vue de le soumettre à l'action d'un outil monté sur ledit ensemble, avec capacité de déplacement entre les deux rouleaux.
- la figure 1 est une vue en plan de la machine ;
- la figure 2 est une vue de face correspondant à la figure 1 ;
- la figure 3 est une vue en coupe transversale selon la ligne 3-3 de la figure 2 ;
- la figure 4 est une échelle plus importante d'une vue partielle en coupe transversale montrant l'entraínement du film ;
- la figure 5 est, à une échelle plus importante, une vue en plan du chariot.
- la figure 6 est une vue en coupe longitudinale de la râcle
- la figure 7 est une vue en coupe transversale selon la ligne 7-7 de la figure 6 ;
- la figure 8 est une vue en plan d'une partie du film nickel ;
- les figures 9, 10, 11, 12 et 13 sont des vues en plan et en coupe à caractère schématique montrant le principe de fonctionnement de la machine selon l'invention.
- la réalisation des différentes zones à imprimer sous forme d'un film continu, évitant l'emploi d'un nombre indépendant de cadres correspondant à chacune de ces zones ;
- le conditionnement du film sous forme d'un rouleau conditionnable dans des cartouches permettant un gain de place notoire pour le stockage ;
- le rouleau émetteur, la cartouche et le film, peuvent constituer un ensemble indissociable ;
- le nombre de manipulations réduit étant donné que l'on effectue qu'une seule manipulation indépendamment du nombre de couleurs et de variantes ;
- les risques mineurs de casse pendant les différentes manipulations ;
- l'indéformabilité dans le temps ;
- la possibilité de regraver plusieurs fois le même film lorsque ce dernier reçoit une pellicule de nickel ;
- la durée théoriquement illimitée du film ;
- la diminution importante du gaspillage de l'encre couleur ;
- la diminution de la consommation d'eau pour le nettoyage des différents éléments de sérigraphie ;
- la suppression du pré-réglage des cadres ;
- la suppression des essais avec du talc ;
- la vitesse de raclage plus élevée ;
- la pénétration plus importante de la couleur qui est envoyée sous pression dans le réservoir de la râcle sans pour autant que cette dernière exerce un effort de pression sur le film ;
- suppression du temps nécessaire pour les différents changements de cadres ;
- possibilité d'avoir plus de dessins sur les mêmes cartouches ;
- augmentation de la productivité.
Claims (13)
- Machine de traitement notamment pour l'impression sérigraphique d'un support textile, caractérisée en ce qu'elle comprend :un ensemble support (E) ;un rouleau de stockage (6) d'un film (7) sous forme d'une fine pellicule de matériau semi-rigide, monté avec capacité d'entraínement en rotation au niveau de l'un des côtés de l'ensemble ;des moyens d'entraínement (17) (18) du film (7) pour le transférer sur un rouleau récepteur (9) monté sur l'ensemble (3), à l'opposé du rouleau de stockage (6), en vue de le soumettre à l'action d'un outil (O) monté sur ledit ensemble, avec capacité de déplacement entre les deux rouleaux (6) (9).
- Machine de traitement selon la revendication 1, caractérisée en ce que l'ensemble support (E) ou le support textile (T) sont montés avec capacité de déplacement relatif guidé, les rouleaux de stockage (6) et de transfert (9) étant disposés parallèlement au sens de déplacement de sorte que l'outil (O) se déplace transversalement par rapport audit support.
- Machine de traitement selon la revendication 1, caractérisée en ce que le film (7) est microperforé et peut être soumis à un traitement de nickelage, en étant recouvert d'une résine photosensible ou non.
- Machine de traitement selon la revendication 2, caractérisée en ce que l'outil (O) est constitué par une râcle (13) agencée pour déposer une encre de couleur qui sera transférée sous l'action de ladite râcle sur un tissu, au travers des microperforations du film (7).
- Machine de traitement selon la revendication 4, caractérisée en ce que la râcle (13) fait office de réservoir (13a) et est reliée à un système de mise en pression de l'encre couleur pour l'envoyer au travers d'une fente continue calibrée sur le tissu au travers du film microperforé.
- Machine de traitement selon la revendication 5, caractérisée en ce que la râcle (13) est reliée à des moyens de lavage sous forme de récipients contenant de l'eau, agencés pour la diriger à l'intérieur de la râcle.
- Machine de traitement selon la revendication 6, caractérisée en ce que la couleur est contenue dans des récipients pouvant être utilisés pour le pesage et sur lesquels est fixé un couvercle auquel sont raccordés une arrivée d'air et un tuyau qui amène la couleur à la râcle, l'arrivée d'air étant tangentielle à la paroi du réservoir, de façon à permettre, pendant la phase de lavage, d'aspirer l'eau au moyen d'un tube venturi et la pousser tangentiellement sur la paroi interne en augmentant l'efficacité du lavage.
- Machine de traitement selon la revendication 3, caractérisée en ce que le film (7) microperforé est constitué d'une pluralité de zones distinctes (7b) correspondant chacune à un motif, chaque zone de motif étant séparée par une zone neutre (7c).
- Machine de traitement selon l'une quelconque des revendications 1 et 2, caractérisée en ce que le film (7) présente latéralement des pistes perforées (7a) coopérant avec un système de denture d'entraínement et de guidage latéral (17) et (18).
- Machine de traitement selon la revendication 9, caractérisée en ce que chacun des rouleaux (6) et (9) est monté dans une cartouche (4) et (4) amovible et présente des agencements d'accouplement temporaires, avec au moins un moto-réducteur d'entrainement.
- Machine de traitement selon la revendication 1, caractérisée en ce que l'ensemble support (E) est constitué par un chariot assujetti à des moyens d'entraínement pas à pas le long d'une table recevant le support textile, lesdits moyens d'entraínement étant solidaires d'une partie de la table et reliés au chariot par des moyens de transmission déterminés pour soumettre le chariot à une accélération élevée.
- Machine de traitement selon la revendication 1, caractérisée en ce que l'ensemble support (E) est constitué par un chariot qui est fixe, le support textile étant monté sur une table avec capacité de déplacement par rapport audit chariot.
- Machine de traitement selon la revendication 1, caractérisée en ce que l'outil (O) est constitué par un ensemble sous forme d'un laser apte à assurer une pluralité de microperforations dans l'épaisseur du film.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9603003A FR2745747B1 (fr) | 1996-03-05 | 1996-03-05 | Machine de traitement notamment pour l'impression serigraphique d'un support |
FR9603003 | 1996-03-05 | ||
PCT/FR1997/000377 WO1997032727A1 (fr) | 1996-03-05 | 1997-03-04 | Machine de traitement notamment pour l'impression serigraphique d'un support |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0885124A1 EP0885124A1 (fr) | 1998-12-23 |
EP0885124B1 true EP0885124B1 (fr) | 1999-12-22 |
Family
ID=9490035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97907167A Expired - Lifetime EP0885124B1 (fr) | 1996-03-05 | 1997-03-04 | Machine de traitement notamment pour l'impression serigraphique d'un support |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0885124B1 (fr) |
AT (1) | ATE187925T1 (fr) |
AU (1) | AU1931397A (fr) |
DE (1) | DE69700989D1 (fr) |
FR (1) | FR2745747B1 (fr) |
WO (1) | WO1997032727A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108891122B (zh) * | 2018-07-11 | 2021-06-29 | 广东王土印刷有限公司 | 一种丝网印刷装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1473079A (fr) * | 1965-12-28 | 1967-03-17 | Perfectionnements aux installations d'impression à la lyonnaise, en vue de décorerdes objets d'épaisseur importante, et notamment des pièces de patrons pour pull-overs ou analogues | |
FR2087498A5 (fr) * | 1970-05-21 | 1971-12-31 | Draeger Alain |
-
1996
- 1996-03-05 FR FR9603003A patent/FR2745747B1/fr not_active Expired - Fee Related
-
1997
- 1997-03-04 AU AU19313/97A patent/AU1931397A/en not_active Abandoned
- 1997-03-04 DE DE69700989T patent/DE69700989D1/de not_active Expired - Lifetime
- 1997-03-04 WO PCT/FR1997/000377 patent/WO1997032727A1/fr active IP Right Grant
- 1997-03-04 AT AT97907167T patent/ATE187925T1/de not_active IP Right Cessation
- 1997-03-04 EP EP97907167A patent/EP0885124B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE187925T1 (de) | 2000-01-15 |
AU1931397A (en) | 1997-09-22 |
DE69700989D1 (de) | 2000-01-27 |
FR2745747B1 (fr) | 1998-04-17 |
FR2745747A1 (fr) | 1997-09-12 |
EP0885124A1 (fr) | 1998-12-23 |
WO1997032727A1 (fr) | 1997-09-12 |
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