EP1403208A1 - Dispositif pour revêtir planches avec bandes de la cire - Google Patents

Dispositif pour revêtir planches avec bandes de la cire Download PDF

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Publication number
EP1403208A1
EP1403208A1 EP20030009730 EP03009730A EP1403208A1 EP 1403208 A1 EP1403208 A1 EP 1403208A1 EP 20030009730 EP20030009730 EP 20030009730 EP 03009730 A EP03009730 A EP 03009730A EP 1403208 A1 EP1403208 A1 EP 1403208A1
Authority
EP
European Patent Office
Prior art keywords
wax
spraying
reservoir
equipment
fact
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Withdrawn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
EP20030009730
Other languages
German (de)
English (en)
Inventor
Vilio Luppi
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.)
Rei SNC Di Luppi Vilio & Co
Vetrerie Flli Paci Srl
Original Assignee
Rei SNC Di Luppi Vilio & Co
Vetrerie Flli Paci 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 Rei SNC Di Luppi Vilio & Co, Vetrerie Flli Paci Srl filed Critical Rei SNC Di Luppi Vilio & Co
Publication of EP1403208A1 publication Critical patent/EP1403208A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/166—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the material to be sprayed being heated in a container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air

Definitions

  • This invention proposes an equipment for spraying spiral stripes, continuous or in segments, or cords or points of thermo-fusible materials, in particular wax, onto materials in shape of plates, like plates in glass, marble, pottery, plastic, wood or similar products, both flat and convex.
  • the equipment according to the invention is characterized by the fact that it provides that the reservoir where the wax is melted is directly applied to the extruders, with the material in granules which is periodically fed into this reservoir, in order to reduce the period of time the wax remains in melted state and to allow to limit the temperature reached to values slightly greater than the melting values, avoiding in this way the phenomenon of the wax "carbonization".
  • the reservoir for melting has small size and the granules are fed periodically by means of a system of pressurized air which drags the granules from the feed hopper to the reservoir, devices being provided for driving the starting of this feed device when the level of the material inside the reservoir falls beyond a certain limit.
  • the machines of this type known today include a big reservoir which is filled with wax and heated to the point the melting is caused, one or more extruders which spray the melted wax onto the plates, for instance when these come out from the furnace, and a series of pipes which connect this reservoir with the various extruders.
  • Both these pipes and the body of the extruders are appropriately thermically isolated and generally also heating systems are provided, formed for instance by electrical resistances, which keep the temperature inside the pipes and the extruders at values which are high enough to keep the wax at a fluidity sufficient to allow its spraying without problems.
  • This problem is solved by this invention which proposes an equipment for spraying melted wax on materials in plates, where the reservoir for melting which is of small size is directly built-in in the extruder and the material is fed to this reservoir still in the shape of granules, at room temperature.
  • the wax is therefore melted only few minutes before the extrusion and therefore the period of time it remains in melted state is very little in comparison with what happens in the known equipments and also the maximum temperature the wax reaches can be lower, because the loss of heat, typical of equipments according to the state of art, do not occur.
  • the reservoir for melting has little size, and sensors are provided, able to sense the level inside the reservoir and drive, when the level falls beyond a previously settled value, the equipments for the feeding of the granules in order to restore the quantity of material inside the reservoir itself.
  • number 1 specifies the extrusion unit in the whole, including a reservoir 2 for the melted wax, a spraying nozzle identified in the whole with 3 and a feeding system for the wax in granules, identified in the whole with 4.
  • the extrusion unit is installed on a support arm 5, preferably a jointed arm, which allows the shifting of the extrusion unit in any direction on a horizontal plane, above the support face of the plates to be sprayed.
  • the reservoir 2 is closed on the upper part by a head 7 with the shape of a plate with passage-ways 8 for the inlet of the wax granules to be melted, and is closed, at the base, by a heating head 9 essentially formed by a plate where electric resistances 10 are inserted, able to generate the heat needed for the wax melting, and a thermocouple 11 for the control of the temperature reached.
  • sensors are present, which are not shown in the figure because they are of known type, suitable to sense the level of the melted plastic inside.
  • a fastening plate 12 can be applied, which is used to install the extrusion unit on other types of support, for instance, in case of completely automatic machines.
  • the feeding system of the wax granules includes a funnel 13 which receives the wax granules through a pipe not shown in the figure, which can preferably pass along the arm 5 and which is connected to a main feeding reservoir and to systems able to generate a compressed air flow which drags the spheres from the reservoir to the funnel.
  • a ball valve 14 opens and closes the passage-way between the outlet of the funnel 13 and a pipe 15 which penetrates into reservoir 2.
  • the spraying unit 3 can be seen in details in figure 6.
  • This unit includes a body 17 to be inserted into the hole provided in plate 9, which presents inside a cylindrical chamber 18 where a piston 19 slides, integral with a pin 29, which, on the lower part, is integral with a sphere 21 for the closing of the spraying nozzle 22.
  • a pipe 23 passes through the pin 20 in order to put in communication the inner part of the reservoir with an annular chamber 24 from which the wax, coming from the reservoir, is then directed to the spraying nozzle 22.
  • the operator drives the lifting of the pin 20 so that the passage-way towards the spraying nozzle 22 is opened.
  • the pressure in the reservoir pushes the wax toward the pipe 23 of the pin, then passes the annular chamber 24 and from here to the spraying nozzle 22, to be pulverized and to deposit onto the plate below.
  • the control of the machine drives the opening of the ball valve 14 allowing that the wax granules coming from the main reservoir reach the funnel 13, from which they fall then into the reservoir.
  • Pressurized air is always used for spraying the melted wax, once the granules, inside the reservoir, heat and melt.
  • Reservoir 2 has reduced size, in order to hold a limited quantity of wax. This allows that the wax in the reservoir gets used rapidly and is replaced by new material coming from the melting of the granules which are loaded from time to time.
  • automatic spraying machines could be provided, where the movements of the spraying unit happen automatically, driven for instance by a numeric control.
  • the machine will be advantageously provided with a system, which can be seen in figures 7 and 9, suitable to sense the size, and in particular the width of the plates in order to control consequently the shifts of the extrusion unit.
  • the system could include a camera 30 with a CCD sensor which frames the support face 31 of the plates 23', 32' ...
  • the signal generated by the sensor is then sent to the electronic appliances for the control of the machine, which calculate the position and the size of the plates and intervenes, by means of software, on the systems which drive the shifting of the extrusion unit, so that the wax is sprayed exactly in the expected zones.
  • the loading of the funnel 13 can be provided when the spraying unit is parked in a starting-point, during the transfer of the plate to be covered.
EP20030009730 2002-09-24 2003-05-02 Dispositif pour revêtir planches avec bandes de la cire Withdrawn EP1403208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20022027 ITMI20022027A1 (it) 2002-09-24 2002-09-24 Apparecchiatura per spruzzare strisce di cera o simili su materiali lastriformi
ITMI20022027 2002-09-24

Publications (1)

Publication Number Publication Date
EP1403208A1 true EP1403208A1 (fr) 2004-03-31

Family

ID=31972209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030009730 Withdrawn EP1403208A1 (fr) 2002-09-24 2003-05-02 Dispositif pour revêtir planches avec bandes de la cire

Country Status (2)

Country Link
EP (1) EP1403208A1 (fr)
IT (1) ITMI20022027A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015207459A1 (de) * 2015-04-23 2016-10-27 Henkel Ag & Co. Kgaa Mobile Anlage sowie Verfahren zur automatischen Erfassung von Auftragsmengen eines Beschichtungsmittels auf Bögen eines Trägermaterials in einem Beschichtungsprozess
CN109174505A (zh) * 2018-09-26 2019-01-11 湖州世合纺织有限公司 一种木制品生产加工用的表面上蜡设备
CN110918287A (zh) * 2019-11-26 2020-03-27 湖州永威家居科技有限公司 一种基于伯努利原理的装潢板用上蜡装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662927A (en) * 1970-01-21 1972-05-16 Eric H Cocks Hot-melt adhesive systems
US4545504A (en) * 1983-01-31 1985-10-08 Monsanto Company Hot melt adhesive delivery system
US5067285A (en) * 1990-04-16 1991-11-26 Progressive Blasting Systems, Inc. Seal belt assembly for compartments in which blasting, spraying and the like operations are performed
US20020104900A1 (en) * 2001-02-08 2002-08-08 Nicky Borcea Robot spray head for cavity treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662927A (en) * 1970-01-21 1972-05-16 Eric H Cocks Hot-melt adhesive systems
US4545504A (en) * 1983-01-31 1985-10-08 Monsanto Company Hot melt adhesive delivery system
US5067285A (en) * 1990-04-16 1991-11-26 Progressive Blasting Systems, Inc. Seal belt assembly for compartments in which blasting, spraying and the like operations are performed
US20020104900A1 (en) * 2001-02-08 2002-08-08 Nicky Borcea Robot spray head for cavity treatment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015207459A1 (de) * 2015-04-23 2016-10-27 Henkel Ag & Co. Kgaa Mobile Anlage sowie Verfahren zur automatischen Erfassung von Auftragsmengen eines Beschichtungsmittels auf Bögen eines Trägermaterials in einem Beschichtungsprozess
CN109174505A (zh) * 2018-09-26 2019-01-11 湖州世合纺织有限公司 一种木制品生产加工用的表面上蜡设备
CN110918287A (zh) * 2019-11-26 2020-03-27 湖州永威家居科技有限公司 一种基于伯努利原理的装潢板用上蜡装置
CN110918287B (zh) * 2019-11-26 2021-02-26 嘉兴科禾能源科技有限公司 一种基于伯努利原理的装潢板用上蜡装置

Also Published As

Publication number Publication date
ITMI20022027A1 (it) 2004-03-25

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