EP1228897A1 - Dispositif pour l'alimentation et application automatique de feuilles minces métalliques de dorure dans un système de revêtement de lames en bois pour cadres et similaires - Google Patents

Dispositif pour l'alimentation et application automatique de feuilles minces métalliques de dorure dans un système de revêtement de lames en bois pour cadres et similaires Download PDF

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Publication number
EP1228897A1
EP1228897A1 EP02425047A EP02425047A EP1228897A1 EP 1228897 A1 EP1228897 A1 EP 1228897A1 EP 02425047 A EP02425047 A EP 02425047A EP 02425047 A EP02425047 A EP 02425047A EP 1228897 A1 EP1228897 A1 EP 1228897A1
Authority
EP
European Patent Office
Prior art keywords
leafs
conveyor belt
gilding
strips
leaf
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.)
Withdrawn
Application number
EP02425047A
Other languages
German (de)
English (en)
Inventor
Piero Orsi
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.)
Orsi Cornici Srl
Original Assignee
Orsi Cornici 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
Application filed by Orsi Cornici Srl filed Critical Orsi Cornici Srl
Publication of EP1228897A1 publication Critical patent/EP1228897A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
    • B44C1/14—Metallic leaves or foils, e.g. gold leaf

Definitions

  • the invention relates to an apparatus to be combined to a system for coating strips for frames or other with gilding leafs formed by an extremely thin metallic film.
  • the apparatus permits this operation avoiding the costly intervention of highly specialized manual operators, who until now performed this operation by arranging a number of leafs on a strip, or several strips, advancing for this purpose on a roller conveyor.
  • the apparatus herein - for automatically feeding and applying said gilding leafs along an advancement path of the strips essentially comprises: a pervious conveyor belt subjected to vacuum - by means of pervious walls of suction boxes - along the active branch for transporting the leafs to a free cylinder, after which the belt skims the surface of the strip, or strips, on which glue is applied whereby laying the leaf; at least one contoured, elastic pressure roller to make the gilding leafs, fed in sequence by the conveyor belt (12), adhere to the strip, or strips, said conveyor belt being entrained around said pressure roller; and means for continuously arranging a sequence of leafs on said conveyor belt.
  • walls - which are also flexible - can be arranged along the path of the conveyor belt and the gilding leafs between said transmission cylinder and the pressure roller; a slight vacuum is created between the walls to accompany the gilding leafs until they are arranged on the transiting strip, or strips.
  • the apparatus may also comprise at least one second pressure roller, which acts in sequence on the surface of the strip or strips already covered with the gilding leafs.
  • the pressure roller, or rollers are adjustable with respect to the strip guides, to adapt them to the shape of the strips.
  • the apparatus can advantageously comprise the following means for arranging the sequence of gilding leafs on the conveyor belt: a reservoir containing a stack of said leafs; a mechanical hand providing alternating movement and equipped with a transversal suction tube with a set of holes for picking and lifting the front edge of the gilding leaf on the top of the stack and transferring the leaf onto the active branch of said conveyor belt, at a relatively slow speed, and thanks to an intermitting suction effect.
  • the transfer speed and the frequency of alternating movement of the mechanical hand are suitable for positioning the sequence of leafs which have just been staked on the conveyor belt.
  • the hand preferably transfers in the direction of movement of the active branch of the suction conveyor belt.
  • At least two mechanical hands with respective leaf reservoirs can be used to increase the production rate while limiting the transfer speed of the leafs from the reservoir to the conveyor belt.
  • One first of said mechanical hands is suitable for arranging the sequence of leafs in distanced positions, with a gap which is essentially equal at least to the dimension of the leaf in the direction of advancement of the conveyor belt; at least one other mechanical hand is suitable for arranging the leafs in the gaps between the previously arranged leafs; the latter mechanical hand can make transfers which are orthogonal with respect to the movement of the conveyor belt.
  • Each leaf reservoir comprises a light presser acting on the stack of leafs, which is temporarily lifted to transfer the leaf on the top of the stack. Furthermore, each reservoir can comprise means for slowly lifting the reservoir containing the stack of leafs as said stack is used up.
  • Each mechanical hand will be advantageously equipped with means for adjusting the position of the suction tube so to ensure a limited gap with respect to the leaf to be picked up, thus avoiding direct contact with the stack of leafs.
  • a system of the known type for the application of gilding leafs on strips L is outlined in Figs. 1 and 2, as well as in Figs. 3 and 4.
  • the system comprises a set of supporting and advancing rollers, indicated by reference numeral 1, on which the strips, such as L, are arranged.
  • the strip, or strips, are advanced according to the arrow f to receive the so-called "imitation gold" leafs D which are extremely thin.
  • Reference numerals 3 and 4 indicate some of the lateral and vertical guide means for guiding the strips. These strips are fed to receive the gilding after applying a special specific glue, such as the so-called "mission" on the strips.
  • the invention relates to an apparatus for mechanically and automatically applying gilding leafs without needing the particular intervention of specialized labor.
  • the apparatus firstly comprises a continuous conveyor belt 12, which turns on free cylinders 14, 16, 18 and others; advancement is controlled by an encoder 14A, associated to the cylinder 14; the belt 12 is pervious to the air because its active section, specifically the upper part, must be aspirating to withhold the leafs (which are arranged on said conveyor belt after being transferred by feeding and depositing means) until they reach the strip, or strips, L, which are fed according to the arrow f under the free cylinder 18.
  • a set of boxes such as 20, 22, subject to vacuum via a suction conduit 24, is provided.
  • the latter is also perforated so to determine a suction effect also along the rotating surface of said free cylinder 18 (also see Fig. 11).
  • Means, generally indicated by reference numerals 30 and 32 and described below, are provided to arrange a sequence of imitation gold leafs, indicated by reference letter D, which are arranged so that they slightly overlap one on the other as outlined by D1 in Fig.
  • the conveyor belt 12 continues beyond the free cylinder 18, which is pervious, distancing the free cylinder 18 until it reaches a pressure roller indicated by reference numeral 34.
  • This roller 34 - which is replaceable - is contoured according to the profile of the fed strip, or strips, L and the edge is elastic so to press on the surface of the strip, or strips, L as shown in the drawing (see the different embodiment in Figs 8 and 9, specifically).
  • the pervious conveyor belt 12 is consequently also transmitted by the pressure roller 34 and guided to reach the initial free cylinder 14 of the active section of the conveyor belt 12.
  • the gilding leafs D are transferred, as shown above, until they are between the strip, or strips, L and the pressure roller 34, which presses the gilding leaf D against the surface of the strip, or strips, which must be gilded and on which "mission” glue (known in the prior art for this purpose) was applied.
  • the glue is distributed on the surface to be gilded of the strips L immediately before the strips are fed onto the rollers 1 and, consequently, under the pressure roller 34, which thus compresses the leafs D which are progressively fed by the conveyor belt and makes them stick so to coat the strips conveyed according to the arrow f.
  • a second pressure roller 38 can be provided after the pressure roller 34.
  • the second pressure roller is also contoured and provided with an elastic edge to complete the application of gilding leafs on the conveyed strips, to assist the operation previously carried out by the pressure roller 34.
  • the pressure roller 34 and the additional pressure roller 38 can be advantageously carried by a structure 40, which can be vertically adjustable, in relation to the morphology of the strips L, and particularly in relation to their thickness, so to adapt the distance between the drive rollers 1 and the pressure roller, or rollers, 34 - and 38 if provided - to the morphology of the strip, or strips, to be gilded. Also the guide rollers 4 and 3, if provided, can be adjusted to be adapted to the various types of strips to be gilded.
  • the strips L will reach the end of the system coated by the gilding D, as indicated by reference L1 in the Figs. 3 and 4.
  • Two walls 50 which can be flexible if required, are advantageously provided in the zone between the switch from the free cylinder 18 to the strips L and from the strips L to the pressure roller 34 to ensure maximum regularity of application of the gilding leafs D by the belt 12.
  • the walls 50 are arranged along the conveyor belt 12 and the cylinder 18 and define a zone comprised between the two walls 50, the box 22, the cylinder 18 and the pressure roller 34, so to create a slight vacuum also in this zone between the two walls 50 and between the free cylinder 18, the box 22 and the pressure roller 34, so that the leafs D are securely held in contact with the section of the conveyor belt 12 between the free cylinder 18 and the roller 34 until they are arranged on the surface to be gilded of the strips L, as clearly appears in Fig.
  • the two units 30 and 32 are provided to feed the gilding leafs D onto the surface of the active section of the conveyor belt 12 between the free cylinders 14 and 16 to be withheld by suction through the pervious belt 12 and the perforated wall 22X of the box 22 in which the belt 12 runs.
  • the unit 30 consists of a reservoir of gilding leafs which are loaded in the form of a stack P (see Fig. 5), whereby forming a reservoir of leafs.
  • the bottom 52 of the stack reservoir is susceptible of being very slowly moved upwards by means of a geared motor system 54 providing an extremely high reduction, to ensure that the level of the leaf on the top of the stack being used is essentially constant as the single leafs are taken.
  • the stack P is very slightly pressed by an extremely light presser 56 (nearly as light as a duster), which is regularly lifted from the stack P being used up whenever a top leaf D is taken from the top of the stack; this duster 56 can be lifted or lowered by a timely fashion by an actuator 57 which is specially synchronized with the conveyor system 30 described herein.
  • an extremely light presser 56 nearly as light as a duster
  • the unit 32 is a mechanical hand for picking up the top leaf from the stack P being used - in the moment in which the light presser 56 is lifted - to transfer said leaf to the active upper section of the pervious conveyor belt 12, immediately after the free cylinder 14 of the belt.
  • This mechanical hand (also see Fig. 7) comprises a slide 58 susceptible of moving on a supporting and guiding body 60 according to the direction of advancement of the conveyor belt 12.
  • a suction tube 64 whose lower side presents a set of suction holes, which aspirates the top leaf on the stack P and picks up said leaf, is fitted on the slide.
  • the body 60 can be raised and lowered by an actuator 65.
  • the tube 64 is approached nearly to skim the leaf without compressing the remaining stack P and recalling it by effect of suction through the holes in the suction tube 64.
  • the suction tube 64 is raised by the body 60 and the slide 58 is moved in the direction of the arrow fA to slowly transfer the gilding leaf D taken by the suction tube 64.
  • the gilding leaf D is lowered nearly onto the active section of the pervious conveyor belt 12, so to delicately arrange it and subject it to suction by vacuum by the suction box 20.
  • the suction effect of the suction tube 64 is ceased at this point; the leaf D is abandoned and transferred by the conveyor belt 12.
  • Aspiration by the suction tube 64 is resumed again when said tube 64 is taken back to nearly skim the next top leaf in the stack P being used up in the reservoir by the unit 30.
  • a dual feeding system of gilding leafs from two different reservoirs with respective mechanical hands such as that described above, may be envisaged.
  • a layout of this kind is illustrated in Fig. 12 where - in addition to the presence of the reservoir of the unit 30 - a second reservoir is provided in a second unit 130 containing a second stack P1 of gilding leafs D, which is located on a side of the initial active section of the conveyor belt 12, between the free cylinders 14 and 16.
  • An additional mechanical hand unit can be combined to the unit 130 to pick gilding leafs from the stack P1 and arrange them on the conveyor belt 12 in the gaps in correspondence to unit 130, such as that comprised between the two gilding leafs D3 and D4 which were distributed at a distance one from the other, as indicated with references in D3, D4, DX, since the transfer by unit 30 to the conveyor belt 12 is slower than the speed of the conveyor belt 12.
  • a second set of gilding leafs will be transferred, as those in positions D5, D6, etc., from reservoir P1 in unit 130, in a direction with is orthogonal to the direction of advancement of the conveyor belt.
  • the transfer will be suitably timed with respect to the lowering of the mechanical hand, which transfers the gilding leafs from the stack P1 to the conveyor belt, in the gaps comprised between the leafs D3 and D4 previously arranged on the conveyor belt.

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  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP02425047A 2001-02-01 2002-02-01 Dispositif pour l'alimentation et application automatique de feuilles minces métalliques de dorure dans un système de revêtement de lames en bois pour cadres et similaires Withdrawn EP1228897A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI20010017 ITFI20010017A1 (it) 2001-02-01 2001-02-01 Congegno per l'alimentazione automatica e l'applicazione di fogli di doratura in sottile pellicola metallica in un impianto per rivestire li
ITFI010017 2001-02-01

Publications (1)

Publication Number Publication Date
EP1228897A1 true EP1228897A1 (fr) 2002-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02425047A Withdrawn EP1228897A1 (fr) 2001-02-01 2002-02-01 Dispositif pour l'alimentation et application automatique de feuilles minces métalliques de dorure dans un système de revêtement de lames en bois pour cadres et similaires

Country Status (2)

Country Link
EP (1) EP1228897A1 (fr)
IT (1) ITFI20010017A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107128064A (zh) * 2017-05-12 2017-09-05 贵州鸿图彩印包装有限责任公司 酒盒生产用烫金机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081304A (en) * 1975-04-21 1978-03-28 Duilio Bruseschi Metallizing process and apparatus for applying metal sheet onto variously shaped ledges or frames
DE3545968A1 (de) * 1985-01-02 1986-07-10 Jane List AB, Helsingborg Verfahren zum schuetzen einer aussenschicht und vorrichtung zum durchfuehren dieses verfahrens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081304A (en) * 1975-04-21 1978-03-28 Duilio Bruseschi Metallizing process and apparatus for applying metal sheet onto variously shaped ledges or frames
DE3545968A1 (de) * 1985-01-02 1986-07-10 Jane List AB, Helsingborg Verfahren zum schuetzen einer aussenschicht und vorrichtung zum durchfuehren dieses verfahrens

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Publication number Publication date
ITFI20010017A1 (it) 2002-08-01

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