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WO2011147485A1 - Appareil permettant une impression numérique sur des articles, tels que des récipients, réalisés en polystyrène expansé fritté - Google Patents

Appareil permettant une impression numérique sur des articles, tels que des récipients, réalisés en polystyrène expansé fritté Download PDF

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Publication number
WO2011147485A1
WO2011147485A1 PCT/EP2010/068156 EP2010068156W WO2011147485A1 WO 2011147485 A1 WO2011147485 A1 WO 2011147485A1 EP 2010068156 W EP2010068156 W EP 2010068156W WO 2011147485 A1 WO2011147485 A1 WO 2011147485A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
packs
pack
region
roller bed
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.)
Ceased
Application number
PCT/EP2010/068156
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English (en)
Other versions
WO2011147485A8 (fr
Inventor
Andrea Schirato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERREVI Srl
Original Assignee
ERREVI Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP10164123.1A external-priority patent/EP2255971B1/fr
Application filed by ERREVI Srl filed Critical ERREVI Srl
Publication of WO2011147485A1 publication Critical patent/WO2011147485A1/fr
Publication of WO2011147485A8 publication Critical patent/WO2011147485A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/28—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
    • B41J11/00222—Controlling the convection means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/28—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers
    • B41J3/286—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers on boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects

Definitions

  • the present invention relates to an apparatus for digital printing on articles constituted by containers made of sintered expanded polystyrene.
  • a first widely used method for graphic customization of packages is screen printing
  • the resulting printing has poor definition and quality, is usually monochromatic and, when in two colors, difficulties arise in superimposing such colors.
  • this printing utilizes single- and two-component resins that require, for cleaning, the use of solvents which, together with the gases released by them, attack the EPS; moreover, the production of the frames is constrained by extreme graphic inflexibility.
  • the method is usually monochromatic; however, it is possible to print in multiple colors, but with very high costs.
  • Another known method is constituted by tampographic printing, which allows to obtain multiple-color prints with good definition and is used to customize, for example, disposable beer glasses.
  • the printing system is inflexible, because the pad cannot be modified and has difficulties in managing both the movement under the press, which entails introducing the parts individually, causing a poor production capacity, and the necessary and frequent cleaning caused by the use of single- and two-component resins.
  • This solution in fact describes a system for processing single prepunched cardboard sheets, which are sent one by one at a conveyor, which sends them to a unit provided with a screen, which reads a drawing to be reproduced and sends it to a printing unit; such unit can be provided with a photosensitive drum or with a printing head, which by rising and lowering prints on the flat surface of a single cardboard sheet.
  • a unit adapted to overturn the cardboard so as to arrange the printed flat surface toward the conveyor and allow to arrange, on the unprinted flat surface, a series of articles, such as cassettes and CDs.
  • this known solution allows to print a single cardboard sheet at a time, which dries immediately once printed because the cardboard absorbs the ink immediately, and requires, in order to form the box, the preventive placement of the items on the cardboard sheet and then the folding of the various flaps of such sheet.
  • Figure 14 of US 5,884,451 illustrates the use of single cardboard sheets, which are opened and folded in order to form a single box in which the CDs or cassettes are inserted, such single box being then closed and passed by a printing head: in this condition also, besides the drawbacks mentioned earlier, one observes the fact that the surfaces on which printing can be performed are restricted to the upper one and to a single lateral one, since it is not possible to print on the opposite surfaces.
  • Another known method for graphic customization of preformed boxes consists in applying adhesive tapes to the outside of the boxes.
  • This solution has very low costs, but has problems in adhesion, application and color change due to the poor resistance to UV rays if stored outdoors.
  • the tapes may often peel off from their support or from the box, especially in damp environments, with implications of contamination of the product contained in the box.
  • the adhesive tape must be applied individually to each box.
  • Another method used for customizing preformed boxes is the application of Fasson adhesive made of coated paper, which allows good customization even in four-color printing, but with rather high costs depending on the quality of the medium, on the number of colors and on the minimum number of labels, which is usually high.
  • digital four-color printing which however is usually used on paper media, which thus have limited thicknesses and exclusively flat shapes that allow easy management of the printing flow; this method, however ,cannot be used straightforwardly if one wishes to use it by replacing the flat paper media with articles or boxes made of sintered expanded polystyrene, constituted usually by crates whose volume makes it unfeasible to use known digital four-color printing machines.
  • the aim of the present invention is to solve the above mentioned technical problems, eliminating the drawbacks of the cited background art, by providing an apparatus that allows to obtain quickly digital printing on preformed articles, which thus have a given volume, such as boxes or containment crates made of sintered expanded polystyrene.
  • an object of the invention is to provide an apparatus that allows digital printing on preformed articles made of sintered expanded polystyrene with high versatility and adaptability of the printing to the different dimensions of the articles.
  • Another object of the invention is to provide an apparatus that allows to quicken all the steps of the printing process and requires the smallest possible number of manual interventions of the operator.
  • Another object is to be able to achieve, in a short time, the printing of a large number of preformed articles made of sintered expanded polystyrene. Another object is to be able to print, on multiple sides, a large number of preformed articles made of sintered expanded polystyrene.
  • Another object of the present invention is to provide an apparatus that uses or produces non-toxic materials, safeguarding the health of the users of the apparatus and allowing its use in the most disparate fields.
  • Another object of the present invention is to allow to graphically customize articles made of sintered expanded polystyrene in a quick and easy manner.
  • Another object of the present invention is to provide an apparatus that allows to perform digital printing on articles constituted by boxes or containment crates made of sintered expanded polystyrene, that can be obtained easily starting from commonly commercially available elements and materials and is highly reliable, relatively easy to provide and at competitive costs.
  • an apparatus for printing on articles constituted by containers made of sintered expanded polystyrene characterized in that it comprises means for the support and advancement of said articles, stacked on each other and arranged on a chosen side so as to form packs, and in that it comprises at least one first digital printing means, which can move axially and at right angles to said advancement means and is arranged above said packs, and in that it comprises at least one first drying region and a region for the unloading of said articles from said apparatus.
  • Figure 1 is a side view of the apparatus as a whole;
  • Figure 2 is a side view of the movable means for the advancement of the articles
  • Figure 3 is a side view of the stop mechanism
  • Figure 4 is a side view of the central centering means
  • Figure 5 is a front view of the lateral centering means
  • Figure 6 is a side view of the means for moving the printing means;
  • Figure 7 is an exploded top view of the means for moving the printing means;
  • Figure 8 is a front view of a different preferred embodiment, for the drying region and for the arrangement of the articles;
  • Figure 9 is a side view of Figure 8.
  • Figure 10 is a side view of the lateral centering means and of the means for pressing of the articles
  • Figure 1 1 is a front view of the means of Figure 10;
  • Figures 12 and 13 are views of a first device for the separation of the packs with respect to a fixed stop
  • Figures 14 and 15 are views of a second device for separation of the packs
  • Figure 16 is a side view of the overturning unit
  • Figures 17, 18 and 19 are a front view and side views of the first or second printing means and of the corresponding means for correcting the position of the printing heads.
  • the reference numeral 1 designates an apparatus for digital printing on articles, designated by the reference numeral 3, particularly on packs 3 a of articles constituted by boxes or crates for containment made of sintered expanded polystyrene and previously stacked on each other and arranged on a chosen side, for example transversely, as in Figures 8 and 9, or longitudinally, as in Figure 1, with respect to the apparatus.
  • the apparatus has support and advancement means for the packs 3a of crates, which comprise a loading area 2 on which the packs 3a of already stacked boxes are deposited; the loading area 2 is arranged at one end of a first accumulation roller bed 4, which is fed continuously by an operator or automatically by way of known means,
  • a second central roller bed 6 is contiguous to the output end of the first accumulation roller bed 4.
  • the second central roller bed 6 is provided, at the output region, with a second stop mechanism 7 for the packs 3 a, which divides it into an initial region 8 for arranging the packs 3 a, which comprises central centering means 9 and lateral centering means 10 for the packs 3a, and into a subsequent first printing region 1 1, in which there is ' at least one first digital printing means 12 provided with adapted movement means 13.
  • the first digital printing means 12 is arranged above the packs 3a and can move both vertically and horizontally with respect to the underlying packs 3a.
  • Printing occurs at a chosen side of each article 3, in particular at the side that is directed toward the overlying digital printing means 12 and faces it; depending on the arrangement of the packs, printing on the chosen side of the article is obtained (see Figures 1 and 8).
  • Printing occurs preferably, but not exclusively, starting from the pack 3a that is directed toward the second central roller bed 6 and then sequentially on the others.
  • an intermediate region 14 which conveys the packs 3a that have already been printed to a first drying region, which is constituted, for example, by a drying oven 15, shown in Figure 1 , or preferably by an overlying hot air conveyance unit 15a, shown in Figures 8 and 9.
  • the whole apparatus 1 is controlled by an electrical control panel 62.
  • the first accumulation roller bed 4, the second central roller bed 6 and the third unloading roller bed 1 are structured in a substantially similar manner.
  • the structure of the second central roller bed 6, which has a supporting structure 18 that is provided completely by means of metallic profiles and rests on feet 19 whose height is adjustable, will be described in detail hereinafter.
  • rollers 20 are associated transversely and rotatably between the shoulders 21 and are advantageously coated with a protective layer 23 made of P VC in order to prevent the articles from being damaged during their movement.
  • the rollers 20 are moved by means of a chain drive driven by a gearmotor 24.
  • the second central roller bed 6 is advantageously provided with rollers with fixed pinion in order to allow the uniformly spaced advancement of the packs of articles.
  • the first accumulation roller bed 4 is provided with motorized rollers or with freewheeling rollers in order to allow the operator to push the articles forward.
  • the third unloading roller bed 16 is provided with fixed pinion rollers in order to allow the continuous advancement of the packs 3a.
  • the first stop mechanism 5 is designed to stop the packs 3a of articles 3 before making them enter the second central roller bed 6, so as to allow the passage in said second roller bed of one pack of articles at a time.
  • the second stop mechanism 7 is designed to stop the packs 3a in the region 8 of the second central roller bed 6 in order to allow the central centering means 9 and the lateral centering means 10 to arrange correctly the chosen pack 3a before printing occurs.
  • the first and second stop mechanisms are structurally identical; thus, by way of example, only the stop mechanism 5 is described, which is composed of a fixed structure 25, provided by means of metallic profiles, which is anchored on the second central roller bed 6, and of a movable part 26, constituted by a vertical movement system 27, which comprises rolling guide spline bearings 28,
  • Upward and downward vertical movement is performed by means of a pneumatic cylinder 29 actuated by a pneumatic electric valve, not shown.
  • an idle roller 30 which is designed to avoid friction between the packs of articles and the movable part during the lifting/lowering movement.
  • the central centering mechanism 9 is constituted by an oscillating lever 31 that retracts between the rollers 20 of the second central roller bed 6, such oscillating lever being provided by substantially L-shaped metallic profiles, in which one wing 31a is linear and anchored to joints 32 with ball bearings in order to allow its rotation, while the other wing 31b, which has an arc-like shape, is made to protrude between two adjacent bearings in the direction of the printing station 11.
  • the joints 32 are installed on a structure 33 that can slide on a first system of linear ballscrew guides 34.
  • the structure 33 is connected to appropriately provided handles 35, which are adapted to impose a manual movement thereof and is provided with positioning pistons 36 with spring-actuated return for interlocking in the stepwise perforations 37 arranged along the sides of the second central roller bed 6.
  • the structure 33 is moved manually, by making it slide along the first system of linear guides 34, and then is positioned correctly by allowing the insertion of the positioning pistons 36 in the stepwise perforations 37.
  • the lever 31 is moved by a first pneumatic cylinder 38 actuated by a pneumatic electric valve.
  • a pressure regulator is also installed in order to avoid an excessive pressure on each pack 3a of articles.
  • the lateral centering means 10 comprise a pusher 39, which is arranged on at least one side of the second roller bed 6, which can move transversely to such second roller bed and thus pushes each pack 3a of articles against a fixed stop 40, which is mounted on the opposite side of the second roller bed 6.
  • the pusher 39 is constituted by two C-shaped parts 41 made of pressed metal plate and is installed on a carriage 42, which can slide on a second system of linear guides with ballscrew sliders, designated with the reference numeral 43.
  • Movement is provided by a second pneumatic cylinder 44 actuated by a pneumatic electric valve
  • a pressure regulator is installed in order to avoid excessive pressure on the pack 3a.
  • the lateral centering means 10 can also be placed at the initial part of the machine and be used to align the individual articles 3 that constitute the ⁇
  • means for pressing such articles which are constituted by a supporting structure 81 constituted by two shoulders 82a, 82b made of aluminum profiles anchored on the first roller bed 4; in the inner part of such supporting structure, linear guides 83a, 83b are accommodated in order to allow the sliding of sliding blocks 84a, 84b, which are anchored to an alignment frame 85 composed of a free roller bed, which is composed of four idle rollers coated by a protective layer made of PVC in order to prevent damage to the packs of crates made of polystyrene during the passage step.
  • the movement of the alignment frame 85 occurs by means of a pair of pneumatic cylinders 86 or by way of a handwheel.
  • the first digital printing means 12 used is preferably a digital plotter known by the Roland trademark, conveniently adapted and fed with water- based printing colors.
  • the first digital printing means 12 is installed above the packs 3a at the means 13 for its movement that allow its forward/backward movement, along the advancement direction of the second roller bed 6, and its ascent/descent motion with respect to the underlying second roller bed 6.
  • This movement allows to adapt the positioning of the first printing means 12 to the dimensions of the underlying pack 3a of articles on which to print.
  • the movement means 13 are constituted by a base structure 45 and by a lifting assembly 46.
  • the base structure 45 is provided preferably by means of tubular elements and rests on feet 47 whose height is adjustable.
  • a third system with linear guides with ballscrew sliders 48 is installed above the base structure 45 in order to impose the sliding of a lifting assembly 46 along the advancement direction of the second roller bed 6.
  • This movement occurs by means of a toothed belt 49, which is actuated by a step motor 50 controlled by an appropriately provided encoder and supported on feet 47.
  • the lifting assembly 46 is preferably composed of two columns 51 , which can slide on a fourth system, which is arranged vertically with respect to the second roller bed 6, of linear guides 52 with ballscrew sliders actuated by ball bearing nuts 53 with reduced clearance actuated by a ballscrew 54.
  • the movement of the ballscrews 54 for the rise and descent of the two columns 51 is provided by a chain drive actuated by a motor 55 of the brushless type, with a safety braking device and an encoder for position reading.
  • the device for separating the packs moves them away from the fixed stop 87 in order to prevent such stop from rubbing against it and becoming misaligned, creating drawbacks for the subsequent operations.
  • the device for separating the packs is composed of a pneumatic cylinder 88, which is anchored on the fixed stop 87, and by a disk 89, which is made in PVC in order to avoid marking the pack of crates made of polystyrene, anchored on the stem of the pneumatic cylinder; in the inactive step of the system, the disk retracts inside the fixed stop, while when printing has been completed the pneumatic cylinder pushes the packs of polystyrene crates by spacing the pack of about 10 mm, and then returns immediately to the resting position in order to allow the next pack to be positioned.
  • Figures 17, 18 and 19 illustrate the first printing means 12, or the equivalent second printing means, in which means for correcting the position of the printing heads 98 are highlighted.
  • composition of the packs 3 a sometimes involves minute imperfections along the whole length of the pack; this can create friction of the printing head 98 along the pack and slight damage may occur to the head itself, which over time can cause the head to break.
  • the means for correcting the position of the printing heads 98 are constituted by an encoder (not shown) for reading the rising and/or descending motion of the plotter, by a pair composed of a high-precision sensor 99 and receiver 100 arranged in the region of initial printing ("heads zero" point, imaginary printing line with respect to the surface to be printed), by a pair composed of a precision sensor 101 and receiver 102 arranged after the heads 98 of the plotter ("heads zero" point, imaginary printing line with respect to the surface to be printed), by a pair composed of a sensor 103 and a reflector 104 for quickly reading the height of the pack 3a.
  • the heads of the plotter are moved closer to the pack of polystyrene containment crates; at this point the plotter descends quickly until the signal of the pair constituted by the sensor 103 and the reflector 104 is interrupted by the presence of the pack.
  • the speed of descent of the plotter decreases in order to allow the precision sensor 99 and receiver 100 to determine the printing start region ("heads zero" point, the imaginary printing line with respect to the surface to be printed), which is near the printing surface of the pack of containment crates made of polystyrene.
  • the plotter starts to print along the entire pack, while the pair constituted by the precision sensor 99 and receiver 100 arranged in the initial printing region are always active and check any excess imperfections of the pack that can damage the printing heads.
  • the pair constituted by the precision sensor 99 and receiver 100 arranged in the initial printing region ("heads zero" point, imaginary printing line with respect to the surface to be printed) or the pair constituted by the precision sensor 101 and receiver 102 arranged after the heads of the plotter ("heads zero" point, imaginary printing line with respect to the surface to be printed) detects an excess imperfection, correction of the printing heads intervenes, i.e., the plotter rises automatically based on the correction factor set previously on the operator panel.
  • This operation is performed automatically and without stopping printing; the small displacement of the plotter is controlled by an encoder installed on the ascent and/or descent columns of the plotter.
  • step 2 the plotter returns to the position detected in the initial step (step 2), ready for the next pack of containment crates made of polystyrene.
  • a first drying region that comprises, for example, the drying oven 15, shown in Figure 1, or preferably the hot air conveyance unit 15a, shown in Figures 8 and 9.
  • such oven is composed of a tunnel-like structure 56, preferably made of pressed metal, with inlet doors 57 and outlet doors 58 that can open and close partially.
  • the movement of the doors 57, 58 occurs by means of a chain drive driven by a gearmotor 59.
  • the electrical control panel 62 comprises all the control logic systems, the controls, the temperature setting systems and a PLC for controlling the movement means 13.
  • the first drying region is preferably constituted by a hot air conveyance unit 15a constituted by a nozzle 70 that can move on a beam 71 of a bridge crane 72 arranged transversely to the apparatus, the beam 71 being also movable at right angles to such apparatus.
  • One or more adapted gearmotors 73a, 73b are provided which, by means of an appropriately provided toothed belt or chain 74 or other interconnection means, move a plate 74 to which the nozzle 70 is connected and which allows the lifting or lowering of the beam 71 , since the plate and the beam are movable on appropriately provided guides.
  • the nozzle 70 is connected to a duct 75 for the conveyance of hot air, which is forced by means of an appropriately provided fan 76.
  • Provisions are made for the adjustment of both the temperature and the speed of the movement of the air conveyance unit 15a.
  • a second device for separating the packs 3a is arranged also in the first drying region and is constituted by a pneumatic cylinder 90, which is anchored on a post 91 and on the stem 92 of which a guide 93 is associated transversely and is provided with free wheels 94 in order to avoid marking the pack of crates made of polystyrene.
  • the pneumatic cylinder pushes the pack of polystyrene crates by separating the pack by about 20 mm and then returning immediately in the inactive position in order to allow the subsequent pack to be positioned.
  • each pack 3 a is obtained by arranging the individual crates so that they are mutually stacked, such pack being then rotated on a chosen side and arranged along an axis that is longitudinal or transverse to the apparatus.
  • the packs 3a thus obtained and arranged mutually side by side along the entire line are sent until they interact with the first stop mechanism 5, which blocks them, allowing the advancement of one pack at a time.
  • the pack released by the first stop mechanism 5 enters the region 8 of the second central roller bed 6.
  • the second stop mechanism 7 blocks the advancement of the pack 3 a and the central centering means 9 and the lateral centering means 10 arrange it correctly in order to perform printing.
  • the second stop mechanism 7 moves downward, allowing the pack 3a to advance in the region 9 where the first digital printing means 12, previously positioned and calibrated by way of the movement means 13, prints on the underlying pack, performing the printing on each one of the crates 3 that form the pack 3a.
  • the pack is made to advance in the intermediate region 14 and from there it enters the first drying region.
  • the unloading roller bed 16 makes the pack advance through the third unloading roller bed 16 to the unloading region 17, from where the operator can unload it and store it in an appropriately provided pallet.
  • the pack 3a is brought at an overturning unit 95, which is designed to pick up the pack of containment crates made of polystyrene, rotate it through 180° and rest it again on the roller bed.
  • the overturning unit 95 is composed of a pair of grip jaws 96, of which one is movable and one is fixed, which can be moved mutually closer or further apart by means of a pneumatic cylinder, arranged transversely to the third roller bed 16, in order to allow grip of the packs of polystyrene containment crates having various dimensions.
  • the pair of grip jaws 96 is installed on a rotating axis 97 in order to allow the rotation through 180° from left to right of the pack of crates and its return into position in order to pick up another pack.
  • a pressure regulator is installed which is calibrated beforehand and is controlled by appropriately provided and known sensors.
  • Rotating cylinders are installed at the two ends of the rotating axis 97 and are in turn installed on a system of linear guides in order to allow to raise and/or lower the axis of rotation to grip the various models of packs of crates made in polystyrene.
  • the height of the axis 97 is adjustable according to the format of the pack of polystyrene crates to be treated.
  • the overturning unit 95 there is optionally an automatic device for pressing the crates, followed by a second printing means, similar to the first printing means 12, so as to print a further side of the crates 3 of each pack 3a; this is followed by a second drying region, similar to the first drying region.
  • the apparatus according to the invention has achieved fully the mentioned aim and objects, since it allows, thanks to the resting arrangement on one side of the packs 3 a and of the first and/or second digital printing means placed above them, to obtain a digital print on the chosen side of containment boxes or crates made of sintered expanded polystyrene, all in a quick and easy manner.
  • the apparatus allows to obtain digital printing on articles with high versatility and adaptability of the printing to the different dimensions of the articles, since it is sufficient to merely adapt the arrangement of the first and/or second digital printing means according to the dimensions of the underlying individual article that composes the pack 3a.
  • the apparatus moreover, allows to quicken all the steps of the printing process and requires few manual interventions of the operator, allowing to customize graphically articles made of sintered expanded polystyrene quickly and easily.
  • the printing means is fed using water-based inks allows to eliminate the risks of toxicity, protecting the health of the users of the mechanism, limiting the disposal of any residues during the cleaning of the digital printing means 12, and finally allowing the use of such apparatus for printing in the most disparate sectors, which range from the medical sector to the food sector, to the gift and fancy goods sector, et cetera.
  • the apparatus according to the invention has been conceived particularly for printing on preformed articles made of sintered expanded polystyrene, it may nonetheless be used, more generally, for preformed articles also made of another material.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Printing Methods (AREA)

Abstract

La présente invention se rapporte à un appareil permettant une impression numérique sur des articles (3), tels que des récipients, réalisés en polystyrène expansé fritté. Ledit appareil comprend un moyen permettant le support et l'avancement des articles qui, au préalable, sont empilés les uns sur les autres et agencés sur un côté de manière à former des emballages multiples (3a). Les emballages multiples (3a) sont envoyés à au moins un premier moyen d'impression numérique (12) qui peut se déplacer axialement et perpendiculairement au moyen d'avancement et qui est agencé au-dessus des emballages multiples (3a). Ensuite, au moins une première région de séchage se termine avec une région pour décharger les emballages multiples (3a) de l'appareil (1).
PCT/EP2010/068156 2010-05-27 2010-11-24 Appareil permettant une impression numérique sur des articles, tels que des récipients, réalisés en polystyrène expansé fritté Ceased WO2011147485A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10164123.1 2010-05-27
EP10164123.1A EP2255971B1 (fr) 2009-05-27 2010-05-27 Appareil et procédé d'impression numérique sur des conteneurs en polystyrène fritté et expansé

Publications (2)

Publication Number Publication Date
WO2011147485A1 true WO2011147485A1 (fr) 2011-12-01
WO2011147485A8 WO2011147485A8 (fr) 2012-03-01

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PCT/EP2010/068156 Ceased WO2011147485A1 (fr) 2010-05-27 2010-11-24 Appareil permettant une impression numérique sur des articles, tels que des récipients, réalisés en polystyrène expansé fritté

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012093077A1 (fr) * 2011-01-05 2012-07-12 Till Gmbh Machine destinée à réaliser des impressions sur des récipients
WO2014041341A1 (fr) * 2012-09-12 2014-03-20 Linx Printing Technologies Ltd Tête d'impression à jet d'encre et capuchon

Citations (7)

* Cited by examiner, † Cited by third party
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JPS5586138A (en) * 1978-12-22 1980-06-28 Toshiba Corp Method of printing on semiconductor device package
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WO1991010595A1 (fr) * 1990-01-10 1991-07-25 British-American Tobacco Company Limited Ameliorations apportees a une machine d'empaquetage de cigarettes
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WO2012093077A1 (fr) * 2011-01-05 2012-07-12 Till Gmbh Machine destinée à réaliser des impressions sur des récipients
US9193146B2 (en) 2011-01-05 2015-11-24 Till Gmbh Machine for printing containers
WO2014041341A1 (fr) * 2012-09-12 2014-03-20 Linx Printing Technologies Ltd Tête d'impression à jet d'encre et capuchon
US9333753B2 (en) 2012-09-12 2016-05-10 Linx Printing Technologies Ltd. Ink jet print head and cap

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