EP4088823A1 - Öffnungsvorrichtung für vorhangbeschichtungskopf - Google Patents

Öffnungsvorrichtung für vorhangbeschichtungskopf Download PDF

Info

Publication number
EP4088823A1
EP4088823A1 EP22020217.0A EP22020217A EP4088823A1 EP 4088823 A1 EP4088823 A1 EP 4088823A1 EP 22020217 A EP22020217 A EP 22020217A EP 4088823 A1 EP4088823 A1 EP 4088823A1
Authority
EP
European Patent Office
Prior art keywords
hopper
screw
curtain coater
coater head
movable part
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.)
Pending
Application number
EP22020217.0A
Other languages
English (en)
French (fr)
Inventor
Carlo Gilioli
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.)
Air Power Group SpA
Original Assignee
Air Power Group SpA
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 Air Power Group SpA filed Critical Air Power Group SpA
Publication of EP4088823A1 publication Critical patent/EP4088823A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/525—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles by increasing the cross section of the discharge openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
    • B05C5/004—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles the work consisting of separate rectangular flat articles, e.g. flat sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/044—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers with glaze or engobe or enamel or varnish
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/047—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by pooring, e.g. curtain coating

Definitions

  • the present invention falls under the technical field relating to machinery used in the ceramic industry for the decoration of ceramic tiles or slabs.
  • a hopper Inside one of these curtain coater heads there is a hopper, into which a liquid glaze, preferably the one so-called 'in solution', is fed.
  • a liquid glaze preferably the one so-called 'in solution'
  • the hopper In its lower part, the hopper is provided with a calibrated outlet slot, from which a curtain of said liquid glaze goes out and is deposited by falling onto the underlying ceramic tiles or slabs in transit, arranged in orderly succession and advanced, with constant speed, by a straight conveyor line.
  • the hopper like other organs involved in the passage of the glaze, must be thoroughly cleaned every time the colour of the glaze is to be changed, as a matter of course, but also at regular intervals, even if the colour of the glaze remains the same, in order to remove any lumps or incrustations that may have formed and that could alter the quality of the layer of glaze applied.
  • the hopper is preferably washed with liquid (water with detergent added if necessary) sprayed under pressure from one or more nozzles.
  • the hopper must be made up of two parts, so that it can be opened during the washing phase, both to allow the introduction and manipulation of the aforementioned nozzles thereinside and to facilitate the drainage of the washing liquid from the lower part of the same hopper.
  • the two parts of the hopper are hinged to each other to allow a book-like opening.
  • a curtain coater head opening device to carry out the washing phase of the hopper, designed so that the hopper is easily accessible when open and, at the same time, as to avoid, upon the subsequent closing, the drawbacks inherent in known solutions and, in particular, those concerning the restoring of the previous operating conditions.
  • Another object of the invention is to propose a device with whose movements are precise and without clearance, both when opening and closing.
  • a still further object of the invention is to propose a device which keeps stable all the positions reached by the two parts of the hopper.
  • Another object of the invention is to provide the device with measuring means suitable for verifying in real time the extent of the movements made by the two parts of the hopper when opening and closing.
  • a still further object of the invention is to propose a device which is shaped in such a way as to allow optimal coexistence and cooperation with the means for washing the hopper.
  • a curtain coater head opening device with said curtain coater head positioned above a straight conveyor line on which ceramic tiles or slabs, arranged in orderly succession, advance with constant speed, with said curtain coater head defining thereinside a hopper being fed with liquid ceramic glaze and formed by a funnel-shaped upper zone and two vertical walls, parallel to each other and placed at a suitable distance one from the other, so as to define, in the lower part, a calibrated outlet slot, from which comes out a curtain of said liquid ceramic glaze, aimed at uniformly covering a part or the whole upper side of said ceramic tiles or slabs.
  • the above mentioned device comprises:
  • the device 1 is associated with a known curtain coater head 2, situated above a straight conveying line 3, on which ceramic tiles or slabs 4, arranged in orderly succession, advance with constant speed V, interspersed with an empty space 5 ( Figs. 1 and 2 ).
  • the curtain coater head 2 ( Fig. 3 ), according to known technique, defines therein a hopper 20, provided in its lower part with a calibrated outlet slot 21, from which a curtain of liquid ceramic glaze goes out, which is aimed at uniformly covering a part or, preferably, the whole upper face 4A of said ceramic tiles or slabs 4.
  • the hopper 20 includes, for example, a funnel-shaped upper zone 22 into which the liquid ceramic glaze is fed at the inlet, by means of a system associated with the curtain coater head 2, not illustrated as not relevant in the context of the present invention.
  • the funnel-shaped upper zone 22 conveys, for example due to gravity, the liquid ceramic glaze towards the underlying calibrated outlet slot 21, defined by two vertical walls 24, 25, parallel to each other and arranged at a suitable distance from each other, depending on the thickness of the curtain of glaze to be obtained.
  • said hopper 20 is formed by two parts, a first stationary part 20F and a second movable part 20M.
  • the first stationary part 20F defines an inclined wall of the above mentioned funnel-shaped upper zone 22 and a stationary vertical wall 24 of said vertical walls 24, 25, whereas the second movable part 20M defines the remaining inclined wall of the funnel-shaped upper zone 22 and a movable vertical wall 25 of said vertical walls 24, 25.
  • the first stationary part 20F further comprises two sides 26 and a lid 27, which form a single body with the inclined wall of the funnel-shaped upper zone 22 and the stationary vertical wall 24 and which delimit the same hopper 20 laterally and from above.
  • the second movable part 20M couples slidingly and tightly, with said sides 26 and lid 27, so that the hopper 20 is completely closed, apart from the duct feeding the glaze S and the mentioned calibrated outlet slot 21 in the lower part.
  • suitable gaskets 29A, 29B are interposed between the first stationary part 20F and the second movable part 20M, to ensure a hermetic seal between the areas in sliding coupling.
  • Drive organs 10, associated with the second movable part 20M of the hopper 20, are aimed at translating the same second movable part 20M in a rectilinear horizontal direction, bringing it close to or away from the first stationary part 20F.
  • an operating position W of said hopper 20 is configured when the second movable part 20M is disposed close to the first stationary part 20F and the stationary vertical wall 24 and the movable vertical wall 25 are at a prefixed distance from each other which regulates said calibrated exit slot 21, while an open position A of said hopper 20 is configured when the second movable part 20M is moved as far as possible from the first stationary part 20F.
  • said drive means 10 comprise:
  • the screw 100 and the nut-screw 101 are coupled by means of a recirculating ball system, which is not illustrated in detail since of known type.
  • the aforementioned operating means 102 are of a motorised type and comprise an electric motor of the brushless or stepper type, equipped with an encoder 103 for controlling the angles of rotation; the electric motor 102 is directly keyed to the screw 100, so that there is a unitary transmission ratio between the two.
  • the drive of the electric motor 102 is driven by control and command means 104 which record the rotations imposed on the screw 100 in real time.
  • the operating means 102 are of manual type and comprise a crank, made integral with the screw 100, and a mechanical counter, associated with the latter, for controlled rotation of the screw 100.
  • Centring and zeroing means 28 are interposed between said first and second parts 20F, 20M of the hopper 20 and are capable of unambiguously determining the condition in which said vertical walls 24, 25 are mutually approached with zero clearance.
  • the centring and zeroing means 28 comprise two conical tips 28P, rigidly fixed to the sides of the second movable part 20M of the hopper 20, intended to match with corresponding conical recesses (not visible) made in blocks 28B, with the latter made integral with the first stationary part 20F.
  • the hopper When it becomes necessary to wash the hopper 20, either for periodic maintenance or because the colour of the glaze has to be changed, the hopper is arranged in the open position A, so as to allow a known cleaning unit 12 to enter the hopper 20 from below and to deliver detergent fluid under pressure, so as to invest and wash its inner walls.
  • the cleaning unit 12 comprises a carriage 13 with at least one rotating spray nozzle 14 of detergent fluid, movable parallel to said calibrated outlet slot 21 along its entire length.
  • lifting means 11 are advantageously associated with said curtain coater head 2 and designed to move the latter vertically between two extreme positions, respectively a lowered working position B, in which the calibrated outlet slot 21 is at a predetermined height from the ceramic tiles or slabs 4 in underlying transit, and a raised washing position L, in which the same curtain coater head 2, in an inoperative condition, is placed higher with respect to the transport line 3.
  • the lifting means 11 comprise, as a pure example, two pneumatic cylinders 110, arranged at the sides of said curtain coater head 2 and are operated in synchronism by known and not shown operating means.
  • lifting means include electric cylinders, one or more recirculating screws driven by a stepper or brushless motor, or manually operated and provided with suitable sensors, capable of allowing fine adjustment of the vertical distance between the tile 4 and the walls 24, 25.
  • the raised washing position L of the curtain coater head 2 is set when the hopper 20 is in the open position A.
  • the device is equipped with effective operating means for opening and closing the hopper, which allow a previous adjustment of the calibrated outlet slot to be easily and with absolute certainty restored.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Paper (AREA)
  • Fluid-Damping Devices (AREA)
  • Coating Apparatus (AREA)
EP22020217.0A 2021-05-10 2022-05-10 Öffnungsvorrichtung für vorhangbeschichtungskopf Pending EP4088823A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000011846A IT202100011846A1 (it) 2021-05-10 2021-05-10 Dispositivo per l'apertura di una testata di velatura

Publications (1)

Publication Number Publication Date
EP4088823A1 true EP4088823A1 (de) 2022-11-16

Family

ID=77022064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22020217.0A Pending EP4088823A1 (de) 2021-05-10 2022-05-10 Öffnungsvorrichtung für vorhangbeschichtungskopf

Country Status (2)

Country Link
EP (1) EP4088823A1 (de)
IT (1) IT202100011846A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557217A (en) * 1983-08-19 1985-12-10 Ciba-Geigy Corporation Applicator for "curtain-type pouring" of molten plastics and the like pourable materials
ITMO20060009A1 (it) * 2006-01-13 2007-07-14 Paolo Sighinolfi Apparato decoratore
DE102015119818A1 (de) * 2015-11-17 2017-05-18 V.I.E. Systems GmbH Vorhangdüse zum beschichten eines substrats mit variabler spaltbreite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557217A (en) * 1983-08-19 1985-12-10 Ciba-Geigy Corporation Applicator for "curtain-type pouring" of molten plastics and the like pourable materials
ITMO20060009A1 (it) * 2006-01-13 2007-07-14 Paolo Sighinolfi Apparato decoratore
DE102015119818A1 (de) * 2015-11-17 2017-05-18 V.I.E. Systems GmbH Vorhangdüse zum beschichten eines substrats mit variabler spaltbreite

Also Published As

Publication number Publication date
IT202100011846A1 (it) 2022-11-10

Similar Documents

Publication Publication Date Title
US5669974A (en) Spray coating process and apparatus
US4702195A (en) Device for cleaning the gas nozzle of a welding torch
EP4088823A1 (de) Öffnungsvorrichtung für vorhangbeschichtungskopf
CN110141769B (zh) 一种具有研合调制功能的药膏涂抹装置
CN109420635A (zh) 用于对传送螺杆进行清洁的清洁设备及方法
KR20140081595A (ko) 도금욕조의 부유 이물질 포집장치
US4469043A (en) Cleaning mechanism for coating control fluid nozzle
US5037672A (en) Device for spraying a coating on the internal surface of a vessel for transferring molten metal and a method relating to said device
JP5202778B2 (ja) パンコーティング装置
DE10226174A1 (de) Bearbeitungsvorrichtung für Wände
CN110774428A (zh) 一种陶瓷加工方法
CN111974236A (zh) 一种关闭用于输送流体产品的分配机器的输送头的装置
CN104093531B (zh) 用于装饰产品的机器
CN114516108A (zh) 一种新型制砖机
US10046581B2 (en) Decorating printing machine
US4930897A (en) Mixer
CN206403179U (zh) 一种多工作头切换系统
EP4364856A1 (de) Vorrichtung zum waschen eines kopfes zum beschichten von vorhängen
CA1120704A (en) Apparatus for building up and repairing a refractory lining
US3035776A (en) Apparatus for applying, distributing and smoothing plastic material to a wall surface
DE4409269C2 (de) Sprühbeschichtungsanlage
KR100506415B1 (ko) 잔류 세정유 제거장치
CN112376864A (zh) 一种地铁施工用墙壁修整装置
CN220277374U (zh) 一种钢包包底用镁碳砖成型模具喷涂装置
CA1232718A (en) Cleaning mechanism for coating control fluid nozzle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230516

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR