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EP2248599A1 - Dispositif doté de plusieurs buses d'air sec et de chambres de protection ainsi que procédé de distribution de colle - Google Patents

Dispositif doté de plusieurs buses d'air sec et de chambres de protection ainsi que procédé de distribution de colle Download PDF

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Publication number
EP2248599A1
EP2248599A1 EP09159659A EP09159659A EP2248599A1 EP 2248599 A1 EP2248599 A1 EP 2248599A1 EP 09159659 A EP09159659 A EP 09159659A EP 09159659 A EP09159659 A EP 09159659A EP 2248599 A1 EP2248599 A1 EP 2248599A1
Authority
EP
European Patent Office
Prior art keywords
adhesive
needle
piston
protective
nozzle openings
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.)
Granted
Application number
EP09159659A
Other languages
German (de)
English (en)
Other versions
EP2248599B1 (fr
Inventor
Beatus Michael Ineichen
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.)
Robatech AG
Original Assignee
Robatech AG
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 Robatech AG filed Critical Robatech AG
Priority to EP09159659.3A priority Critical patent/EP2248599B1/fr
Priority to PCT/EP2010/055990 priority patent/WO2010128020A1/fr
Publication of EP2248599A1 publication Critical patent/EP2248599A1/fr
Application granted granted Critical
Publication of EP2248599B1 publication Critical patent/EP2248599B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • B05C5/0275—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve
    • B05C5/0279—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve independently, e.g. individually, flow controlled
    • 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
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet

Definitions

  • the invention relates to devices with a plurality of nozzle openings and adhesive feeds.
  • the present invention relates to an apparatus for applying a flowable moisture-curing medium (e.g., adhesive or sealant) to a workpiece.
  • a flowable moisture-curing medium e.g., adhesive or sealant
  • it is about the use of 1-component PUR adhesive.
  • the devices for this must be suitable for different applications or workpieces of different sizes to be bonded or sealed.
  • nozzles for example, in a common comb-like arrangement. Some of these nozzles can be closed with a slider or piston to adjust the application width. This type of device has the advantage that only those nozzles are actuated, which are actually required due to the dimensions of the workpiece. The other nozzles remain closed.
  • One-component adhesives are known which cure once they come into contact with moisture. These adhesives are sometimes referred to as moisture-curing cold glue or moisture-curing adhesive. As soon as these adhesives come in contact with moisture, the crosslinking process begins, which ultimately leads to the curing of the adhesive. Once the glue has cured, it can not work anymore be converted into the liquid form, as is the case for example with hot glue.
  • membrane-based application systems are used to deliver or apply such moisture-curing adhesives, as the diaphragm valves provide good sealing between the adhesive and the air.
  • the membrane-based application systems have a number of disadvantages. Among other things, the diaphragm valves tolerate no pressures that are above 20 bar. In addition, the life (calculated in number of valve strokes) is relatively low and the diaphragm valves are expensive.
  • the object was to provide a device for applying a flowable medium, which is adaptively adaptable to different large workpieces or job conditions and avoids the mentioned disadvantages of premature curing or soiling as far as possible.
  • the object is to provide a device for applying a flowable medium, which allow working with a large distance between the nozzle and the material and which makes it possible that the medium forms an intimate connection with the material.
  • the task is to create a corresponding method.
  • the object is achieved by a device according to claim 1 and by a method according to claim 8.
  • a first device is equipped with a plurality of nozzle openings and switchable adhesive feeds, wherein adhesive can be dispensed at least through a part of the nozzle openings.
  • each Nozzle openings can be actuated by a high-pressure needle valve or high-pressure piston valve with needle or piston movable up and down.
  • a protective space which surrounds the needle or the piston sealing. The shelter is exposed to a protective medium.
  • the invention is particularly suitable for moisture-curing (moisture-curing) adhesives.
  • a protective medium e.g., a dried air stream or a liquid
  • a protective medium e.g., a dried air stream or a liquid
  • This embodiment is particularly advantageous because the device has a very high reliability because of a low seal wear.
  • Fig. 1 is a device 10 with a plurality of nozzle openings 11.1 - 11.4 arranged in a row and with switchable adhesive feed lines 12.
  • This device 10 is operable in a first operating mode or a second operating mode.
  • the Fig. 1 is shown through all the nozzle openings 11.1 - 11.4 through adhesive (here adhesive beads) KR delivered.
  • adhesive here adhesive beads
  • Each of the nozzle openings 11.1 - 11.4 is formed on or in a housing 13.1 - 13.4.
  • the housing / s 13.1 - 13.4 have an adhesive channel 15 (see, eg Fig. 3 ) for supplying the adhesive K to the nozzle opening 11.1 - 11.4.
  • the adhesive K is supplied via hoses or tubes 12 to the adhesive channel 15 or the adhesive channels 15.
  • a flow chamber 16 in the immediate region of the nozzle opening 11.1 - 11.4 arranged. Details are the Fig. 3 refer to.
  • a gas supply 17 is connected to the flow chamber 16. In Fig. 1 this gas supply 17 is indicated schematically by a thin line. In practice, this gas supply 17 has a larger diameter because of the required gas flow, or it is per nozzle opening 11.1 - 11.4 own gas supply 17 available.
  • the device 10 each comprises an outlet opening 14.1 - 14.4 (see, for example Fig. 3 ) in the region of each of the nozzle openings 11.1 - 11.4.
  • the outlet openings 14.1 - 14.4 are arranged so that when supplying gas G through the gas supply 17 into the flow chamber 16 and the supply of adhesive K through the adhesive channel 12 to the nozzle opening 11.1 - 11.4 through the outlet opening 14.1 - 14.4 at the same time adhesive KR and gas G are deliverable.
  • the exiting gas G and the outlet openings 14.1 - 14.4 are in Fig. 1 not recognizable.
  • Fig. 1 shows the following exemplary further details.
  • a plurality of adhesive beads KR are dispensed parallel to one another onto a material M (also called a material) with the device 10. It is provided for this purpose, a relative movement V between the device 10 and the material M.
  • Fig. 1 It can be seen that one housing or housing part 13.n can be provided per nozzle opening 11.n. But it is also conceivable that all nozzle openings are housed 11.n in a common housing. If a housing or housing part 13.n is provided per nozzle opening 11.n, then an adhesive feed 12 and / or a gas feed 17 is preferably also provided per nozzle opening 11.n.
  • the individual flow chamber 16 and the outlet openings 14.1-14.4 are arranged with respect to the respective nozzle openings 11.1-11.4 so that the gas G forms a gas jacket around the adhesive KR.
  • This principle is in Fig. 3 indicated schematically, where it is shown that a leaking adhesive bead KR is surrounded by a slightly conical gas jacket G.
  • the device 10 is designed in such a way that all the nozzle openings 11.1 - 11.4 can always be supplied with the gas G through the gas supply 17 both in the first operating mode and in the second operating mode.
  • a sufficiently powerful gas source 20 must be used, which is able to permanently a gas flow of sufficient size to provide.
  • the device 10 operates with a pressure tank 21 as a buffer between the gas source 20 and the flow chambers 16.
  • the pressure tank 21 is optional.
  • FIG. 2A another device 10 of the invention is shown in a schematic plan view.
  • the device also comprises four nozzle openings 11.1 - 11.4 arranged in a row here. That is to say, the nozzle openings 11.1 - 11.4 sit along a common line L.
  • the nozzle openings 11.1 - 11.4 can, however, also be grouped in a different arrangement (eg staggered relative to one another).
  • device 10 is operated in the moment shown in the first mode of operation. In this mode, adhesive beads KR are delivered through all the nozzle openings 11.1-11.4. This results in a first application width transverse to the movement V of the material M, which is designated here by B1.
  • Fig. 2B the same device 10 of the invention is shown in a schematic plan view.
  • device 10 is operated in the moment shown in the second mode of operation.
  • less than four nozzle openings 11.1 - 11.4 (here the nozzle openings 11.1 and 11.2) are supplied with adhesive K. Therefore, only two adhesive beads KR are produced.
  • B2 is smaller than B1.
  • Fig. 2C the same device 10 of the invention is shown in a schematic plan view.
  • device 10 is operated in the moment shown in a third mode of operation.
  • less than four nozzle openings 11.1 - 11.4 (here the nozzle openings 11.1, 11.2 and 11.4) are supplied with adhesive K. Therefore, only three adhesive beads KR are produced in this example. This results in an application width transverse to the movement V of the material M, which corresponds to the application width B1, wherein, however, the distance between two of the adhesive beads KR is greater.
  • Fig. 3 shows a section through a part of a further embodiment of the invention. It is the section through a housing 13.1 with a nozzle opening 11.1 shown.
  • the adhesive K is guided from the right through an adhesive channel 15 into a nozzle chamber 18 of the housing 13.1.
  • a nozzle needle 19 can be moved up and down to open or close the nozzle opening 11.1.
  • the individual flow chamber 16 surrounds a lower portion of the nozzle 24 at 360 degrees. That is, the flow chamber 16 is arranged rotationally symmetrically around the nozzle 24 around. This can be achieved by placing or attaching a cap-like housing 22 to the lower region of the nozzle 24.
  • a sealing ring 23 may be arranged in the upper area, as in FIG Fig. 3 indicated. Laterally (here from the right), the gas stream G is blown through a gas supply 17 into the flow chamber 16. The gas stream G circulates around the nozzles 24 as it enters the flow chamber 16, where it leads to a cooling effect if cold gas G is introduced. If you want to prevent premature cooling, the gas G is preheated.
  • Fig. 4 shows a view of a part of another embodiment of the invention. It is a view of a housing 13.n shown with a nozzle 24 with nozzle opening 11.n. The nozzle 24 and the nozzle opening 11.n are shown in dashed lines, since they are surrounded by a cap-like housing 22 having a sealing ring 23 or a rubber-like sealing collar at the top.
  • the gas flow G is injected at such a pressure in the flow chamber 16 that there is an overpressure.
  • gas G together with the adhesive KR, exits downwards through an outlet opening 14.1.
  • the gas G encases the adhesive bead KR as indicated.
  • the housing 22 is designed so that the outlet opening 14.1 is formed in the housing 22.
  • the outlet opening 14.1 can also be provided on the housing 13.1 of the nozzle 24.
  • each nozzle opening 11. n is individually switchable, which, for example, with an electromagnetically movable nozzle needle 19 in one
  • Nozzle chamber 18 can be achieved.
  • a cap-like housing 22 made of a plastic material or rubber material is used, which can be inserted by hand over the nozzles and replaced if necessary.
  • the cap-like housing 22 may have a side gas port 17 for connection to a gas source 20, as in FIG Fig. 4 shown.
  • the adhesive supply and / or the gas supply can be completely controlled by a controller 30 (clocked switched on and off).
  • the controller 30 is in Fig. 1 indicated schematically.
  • a device 10 according to the invention can be equipped with various control and control elements in order to be able to monitor the method according to the invention. These control and control members may e.g. be controlled by the controller 30.
  • the mentioned gas source 20 and / or the pressure tank 21 is / are preferably provided in the various embodiments with a sensor 32 which, like a hygrometer, measures the moisture content of the air.
  • the dried gas (preferably in the form of dried air) preferably has a relative humidity in a range of 0-0.5%, preferably 0.45%.
  • the gas stream G exiting the exit port 14.n has a dew point (or dew point temperature) of 40 ° C atm.
  • the gas source 20 and / or the pressure tank 21 are designed per nozzle opening 11.n exits between 1 and 1.5 standard liters of gas per minute through the outlet opening 14.n. Per day and nozzle opening 11.n you need about 40 m 3 of dry gas. By providing the individual flow chambers per nozzle, the consumption of dry gas can be kept relatively small.
  • the gas source 20 In a device 10 with twenty nozzle openings 11.1 - 11.20, the gas source 20 must thus be able to produce about 20 to 30 standard liters of gas per minute.
  • the nozzle orifices 11.n which are not needed, are immersed in a liquid bath containing a liquid which prevents the adhesive from curing. In this case, no gas G must be supplied to the respective nozzles 24 as soon as the nozzles 24 are immersed in the liquid.
  • gas source 20 a compressed air refrigerant dryer or an adsorption dryer is used as the gas source 20.
  • gas source 20 are membrane or disk dryers.
  • the device 10 in addition to the flow chamber 16 per nozzle on a protective chamber 40 with a protective medium SM.
  • the protective chamber 40 is arranged in the rear region of the needle or piston valve so that the needle or the piston 19 of the valve penetrates the protective chamber 40.
  • Fig. 5 statically in the protective chamber 40
  • the protective chamber 40 dynamic flows through
  • FIG. 2 shows the example of an embodiment of a device 10 equipped with a protective chamber 40 containing the protective medium SM (here a liquid).
  • the needle or the piston 19 of the valve has at its output end here a spherical shape 44. However, it may also have a different shape.
  • a spherical shape 44 At the rear end of the needle or piston 19, it penetrates a chamber 40, as shown.
  • the needle or piston 19 is enclosed by sealing elements (eg, sealing rings) to prevent or reduce the backward leakage of adhesive K.
  • seals 41, 42 are disposed immediately below and above the protection chamber 40.
  • a channel 43 or a reservoir for the protective medium SM is provided, as in Fig. 5 to recognize. Should during an up and down movement (in Fig.
  • Fig. 6 the example of an embodiment of a device 10 is shown, which is equipped with a protective chamber 40, in which the protective medium SM (here a liquid) is introduced via a feed channel 43.1 and removed via a discharge channel 43.2.
  • the needle or the piston 19 of the valve has a slightly pointed shape at its output end here. But it can also have a different shape.
  • the needle or piston 19 is enclosed by sealing elements (eg, sealing rings) to prevent or reduce the backward leakage of adhesive K.
  • seals 41, 42 are disposed immediately below and above the protection chamber 40. Laterally, a reservoir may be provided for the protective medium SM, which in Fig. 6 can not be seen.
  • a liquid is used as the protective medium SM.
  • a solvent liquid which serves as a solvent for the adhesive K, which is processed in the device 10. If smaller adhesive residues should escape to the rear, these residues in the protective chamber 40 are virtually dissolved by the solvent. There is therefore no lumping and damage to the seal (s).
  • Ruetasolv (from RKS GmbH, Germany) has proven to be particularly suitable as a solvent for 1-K PUR adhesive, since this solvent is also used as a softener in this adhesive.
  • the protective medium SM is moved in the protective chamber 40, that is, is conveyed, as by means of an exemplary embodiment in FIG Fig. 6 shown.
  • a small pumping system which keeps the protective medium SM in motion so that never a supersaturation of the protective medium SM can occur with adhesive residues.
  • the described devices 10 have a long service life and can easily complete significantly more than 100,000 strokes of the nozzle valves without maintenance. It can even be reached 1'000'000 strokes.
  • the present invention is particularly suitable for use in the wood industry, where, for example, supporting roof beams with high reliability to stick together.
  • distances L between the nozzle and material M which are larger than 20 mm and preferably up to 50 mm can be made possible.
  • the solution according to the invention can also be used in the "near range” e.g. between 2 and 5 mm distance.
  • the invention enables a precise and intimate wetting of the material M, since the adhesive K is discharged at a high exit speed.
  • the measures described, the maintenance costs compared to conventional devices is significantly lower.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP09159659.3A 2009-05-07 2009-05-07 Dispositif doté de plusieurs buses d'air sec et de chambres de protection ainsi que procédé de distribution de colle Active EP2248599B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09159659.3A EP2248599B1 (fr) 2009-05-07 2009-05-07 Dispositif doté de plusieurs buses d'air sec et de chambres de protection ainsi que procédé de distribution de colle
PCT/EP2010/055990 WO2010128020A1 (fr) 2009-05-07 2010-05-03 Dispositif comprenant plusieurs buses haute pression et chambres de protection et procédé pour émettre un adhésif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09159659.3A EP2248599B1 (fr) 2009-05-07 2009-05-07 Dispositif doté de plusieurs buses d'air sec et de chambres de protection ainsi que procédé de distribution de colle

Publications (2)

Publication Number Publication Date
EP2248599A1 true EP2248599A1 (fr) 2010-11-10
EP2248599B1 EP2248599B1 (fr) 2013-08-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09159659.3A Active EP2248599B1 (fr) 2009-05-07 2009-05-07 Dispositif doté de plusieurs buses d'air sec et de chambres de protection ainsi que procédé de distribution de colle

Country Status (2)

Country Link
EP (1) EP2248599B1 (fr)
WO (1) WO2010128020A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016050085A1 (fr) * 2014-09-30 2016-04-07 京东方科技集团股份有限公司 Appareil, système et procédé pour l'application en revêtement de colle de scellement de cadre
CN116899820A (zh) * 2023-09-14 2023-10-20 常州银河世纪微电子股份有限公司 一种用于芯片双孔点胶头及其点胶方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017100861A1 (de) 2017-01-18 2018-07-19 HELLA GmbH & Co. KGaA Vorrichtung zur vorrübergehenden Ruhestellung einer Einrichtung für den Klebstoffauftrag
CN115445858A (zh) * 2022-09-02 2022-12-09 无锡车联天下信息技术有限公司 一种一次挤压点胶机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007121A2 (fr) * 1990-10-17 1992-04-30 Exxon Chemical Patents Inc. Filiere de formage par soufflage de matiere fondue
EP0700730A1 (fr) * 1994-09-06 1996-03-13 Loctite (Ireland) Limited Applicateur de liquides tels que des colles
WO1996034132A1 (fr) * 1995-04-26 1996-10-31 Exxon Chemical Patents Inc. Matrice modulaire de soufflage a chaud
WO1999046057A1 (fr) * 1998-03-13 1999-09-16 Nordson Corporation Matrice en segments pour l'application d'adhesifs thermofusibles ou autres produits polymeres fondus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005011119U1 (de) * 2005-07-12 2005-09-29 Elektrobau Wehrmann Gmbh Auftragsvorrichtung zum Auftragen von mehreren Kleberraupen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007121A2 (fr) * 1990-10-17 1992-04-30 Exxon Chemical Patents Inc. Filiere de formage par soufflage de matiere fondue
EP0700730A1 (fr) * 1994-09-06 1996-03-13 Loctite (Ireland) Limited Applicateur de liquides tels que des colles
WO1996034132A1 (fr) * 1995-04-26 1996-10-31 Exxon Chemical Patents Inc. Matrice modulaire de soufflage a chaud
WO1999046057A1 (fr) * 1998-03-13 1999-09-16 Nordson Corporation Matrice en segments pour l'application d'adhesifs thermofusibles ou autres produits polymeres fondus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016050085A1 (fr) * 2014-09-30 2016-04-07 京东方科技集团股份有限公司 Appareil, système et procédé pour l'application en revêtement de colle de scellement de cadre
US9700914B2 (en) 2014-09-30 2017-07-11 Boe Technology Group Co., Ltd. Coating device, system and method for sealant
CN116899820A (zh) * 2023-09-14 2023-10-20 常州银河世纪微电子股份有限公司 一种用于芯片双孔点胶头及其点胶方法
CN116899820B (zh) * 2023-09-14 2024-01-02 常州银河世纪微电子股份有限公司 一种用于芯片双孔点胶头及其点胶方法

Also Published As

Publication number Publication date
EP2248599B1 (fr) 2013-08-07
WO2010128020A1 (fr) 2010-11-11

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