EP2301678A1 - Dispositif doté d'un agencement de buses en forme de poutre et procédé de dépôt d'une matière adhésive - Google Patents

Dispositif doté d'un agencement de buses en forme de poutre et procédé de dépôt d'une matière adhésive Download PDF

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Publication number
EP2301678A1
EP2301678A1 EP09171388A EP09171388A EP2301678A1 EP 2301678 A1 EP2301678 A1 EP 2301678A1 EP 09171388 A EP09171388 A EP 09171388A EP 09171388 A EP09171388 A EP 09171388A EP 2301678 A1 EP2301678 A1 EP 2301678A1
Authority
EP
European Patent Office
Prior art keywords
nozzle body
adhesive
nozzle
longitudinal channel
needle
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Withdrawn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
EP09171388A
Other languages
German (de)
English (en)
Inventor
Thomas Meyer
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 EP09171388A priority Critical patent/EP2301678A1/fr
Publication of EP2301678A1 publication Critical patent/EP2301678A1/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Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to devices with bar-shaped nozzle arrangement and corresponding method for dispensing an adhesive.
  • 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 (polyurethane) 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.
  • Another aspect is the robustness of such a device.
  • the device When it comes to the gluing of large elements, e.g. Wood composite elements is, then the device must be designed to be robust.
  • moisture-curing adhesive e.g. PUR 1-component adhesive used.
  • PUR 1-component adhesive used.
  • special measures must be taken.
  • the corresponding adhesives cure as soon as they come into contact with moisture. These adhesives are sometimes referred to as moisture-curing cold glue or moisture-curing adhesive. Once these adhesives come in contact with moisture, begins to use the crosslinking process, which ultimately leads to the curing of the adhesive. Once the adhesive has cured, it can no longer be converted into the liquid form, as is the case with hot glue, for example.
  • 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. Such solutions are therefore not suitable for large job widths and for devices that need to be very robust.
  • the object was to provide a device for applying a flowable, moisture-curing medium having an application width of 1 meter and more and which is preferably adaptable adaptable to different large workpieces or application conditions and the mentioned disadvantages of premature curing or avoiding soiling as much as possible.
  • the task is to create a corresponding method.
  • the object is achieved by a device according to claim 1.
  • a first device is characterized in that it comprises a bar-shaped nozzle arrangement, which is arranged horizontally above a working zone.
  • the nozzle assembly includes a first nozzle body having an adhesive longitudinal channel which extends over a total length parallel to a longitudinal axis which corresponds approximately to an application width of the device.
  • output holes are provided, which penetrate into the adhesive longitudinal passage and which are arranged in a row parallel to the longitudinal axis.
  • the number m is an integer> 10. Preferably, this number is> 50.
  • An adhesive feed is provided which is fluidically connected to the adhesive longitudinal channel.
  • a second Nozzle body is supported relative to the first nozzle body so as to be able to move up and down with respect to the first nozzle body.
  • each hollow needle has a through-channel and a needle tip, and one hollow needle each is fluidically connected to one of the m output holes so that adhesive can penetrate from the adhesive longitudinal channel into the through-channels.
  • the second nozzle body is in an upper position and each of the hollow needles sits with its respective needle tip in a corresponding valve seat of the second nozzle body.
  • the nozzle openings located below the valve seats are closed.
  • the second nozzle body In a second state, the second nozzle body is in a down position and each of the hollow needles releases the corresponding valve seat with its respective needle tip to allow adhesive from the adhesive feed through the glue longitudinal channel, through the m exit holes and through channels of the m hollow needles through the valve seats and the m corresponding nozzle openings can escape in the direction of working zone.
  • the invention can also be used for other moisture-curing adhesives.
  • a device 10 is shown with bar-shaped nozzle assembly 20, which is arranged horizontally above a working zone A.
  • the nozzle assembly 20 comprises a first nozzle body 21 with adhesive longitudinal channel 22 which extends over a total length L parallel to a longitudinal axis LA, which corresponds approximately to an application width AB of the device 10, as in Fig. 4 can be seen.
  • m output holes 23 which penetrate into the adhesive longitudinal channel 22 and which are arranged in a row parallel to the longitudinal axis LA. Details are the exemplary embodiment of Fig. 3 refer to.
  • m is an integer greater than 10 and preferably greater than 50.
  • a device 10 according to the invention comprises between 5 and 10 exit holes 23 per 10 cm length (viewed in the direction of the longitudinal axis LA).
  • An adhesive supply 40 fluidly connected to the adhesive longitudinal channel 22 in order to be able to supply adhesive, for example, from a tank 41.
  • a second nozzle body 30 is supported relative to the first nozzle body 21 so as to be able to perform an up and down movement P with respect to the first nozzle body 21 (see FIG Fig. 3 ).
  • the device comprises m hollow needles 24, each hollow needle 24 having a passageway 25 and a needle tip 26, as in FIG Fig. 3 can be seen.
  • Each of the m output holes 23 has a respective hollow needle 24 fluidically connected so that adhesive can penetrate from the adhesive longitudinal channel 21 into the through channels 25.
  • the second nozzle body 30 In a first state, the second nozzle body 30 is in an upper position and each of the hollow needles 24 is seated with its respective needle tip 26 in a corresponding valve seat 31 of the second Nozzle body 30. Thus, the lying below the valve seats 31 nozzle openings 32 are closed.
  • the second nozzle body 30 In a second state, the second nozzle body 30 is in a lower position and each of the hollow needles 24 releases the corresponding valve seat 31 with its respective needle tip 26, thereby allowing adhesive from the adhesive feed 40 through the adhesive longitudinal channel 21, through the m exit holes 23 and through channels 25 of the m hollow needles 24, can escape through the m valve seats 31 and the m corresponding nozzle openings 32 in the direction of working zone A.
  • Fig. 2 In Fig. 2 is indicated that several adhesive webs KR, beads or threads parallel to each other from the nozzle openings 32 exit. For the sake of clarity, only four adhesive webs KR are shown here.
  • the adhesive webs KR, caterpillars or threads are distributed over a workpiece W (in this case a large format plate) which moves below the bar-shaped nozzle arrangement 20. The direction of movement is in Fig. 2 indicated by the arrow V.
  • the second nozzle body 30 comprises a chamber 33 for receiving a barrier liquid S.
  • the barrier liquid S prevents the curing of the adhesive.
  • This chamber 33 surrounds a region of the first nozzle body 21, in which the hollow needles 24 are arranged on the first nozzle body 21, since leaks and leakage of adhesive can occur here.
  • a further embodiment of the device 10 can be seen, in which the second nozzle body 30 comprises a chamber 33 for receiving a barrier liquid S.
  • the barrier liquid S which in Figure 5 is shown, prevents the curing of the adhesive.
  • This chamber 33 surrounds a region of the first nozzle body 21, in which the hollow needles 24 are arranged on the first nozzle body 21, since leaks and leakage of adhesive can occur here.
  • the chambers 33, 34 filled with barrier liquid S are preferably provided where seals or sealing rings 35 or 36 are seated.
  • seals or sealing rings 35, 36 are seated.
  • seals or sealing rings 35, 36 together with the filled with sealing liquid S chambers 33, 34 for a good seal. It comes here neither to the leakage of adhesive nor to the curing of the adhesive.
  • a liquid is used as the sealing liquid S, which is adapted to the adhesive so that the adhesive does not harden on contact with the barrier liquid S.
  • the barrier liquid S comprises a plasticizer.
  • a further chamber may also be arranged in the region of the needle tip 26 in the various embodiments.
  • Fig. 3 an embodiment of the device 10 can be seen, in which in an upper region of the first nozzle body 21 at least one movable locking needle 27 is arranged.
  • This locking pin 27 penetrates through an overhead hole 28 in the adhesive longitudinal channel 22 a.
  • a closing movement P1 it can be displaced downwards in order to close the exit hole 23 of the adhesive longitudinal channel 22 from the inside with a lower needle area 29.
  • Another chamber 34 may be arranged in the various embodiments in the region of the locking needle 27, as in Fig. 3 shown.
  • Fig. 3 an embodiment of the device 10 can be seen, in which the movable locking needle 27 is resiliently mounted so that it automatically returns to the execution of the shutter movement P1 in an upper starting position.
  • the exit hole 23 In the upper starting position, the exit hole 23 is open.
  • a spring may be provided on the locking pin 27.
  • Fig. 3 an embodiment of the device 10 can be seen, in which an adjusting mechanism 60 is provided to act on one or more movable locking pins 27 to cause the closing movement P1 of one or more movable locking pins 27 by this action.
  • the adjustment mechanism 60 may be made similar to a camshaft of an engine.
  • a preferred embodiment has a block adjustment mechanism 60 to act on a plurality of juxtaposed movable locking pins 27 together. Through this joint action, a block-by-block closing movement P1 of the plurality of adjacent movable locking needles 27 can be triggered so as to be able to set the effectively effective application width AB of the device 10.
  • the apparatus 10 has a gantry structure with a working zone A adapted to move workpieces W to be glued below the nozzle assembly 20.
  • Three portal solutions are in the FIGS. 1, 2 and 3 shown.
  • the device 10 comprises means for predetermining a defined dry air flow in the region of the nozzle openings 32.
  • a corresponding embodiment of the device 10 can be seen.
  • 30 or baffles 37 are arranged in the lower region of the second nozzle body, the dry air through a dry air chamber 38 pass out next to the nozzle openings 32 or let flow past.
  • the lips or baffles 37 are preferably arranged in the lower region of the second nozzle body 30 such that a small air opening 39 results on the circumference of each nozzle opening 32.
  • the device 10 has a nozzle body 42 which can be screwed into a nozzle seat with internal thread.
  • the nozzle seat is located in The lower portion of the second nozzle body 30.
  • the nozzle chamber Z is located in the interior of the nozzle body 42. Such a nozzle body 42 can be replaced if necessary.
  • the apparatus 10 includes a drive unit configured to perform the up and down movement P of the second nozzle body 30 with respect to the first nozzle body 21.
  • Actuators or adjusting elements are preferably used as a drive unit.
  • the actuators may e.g. work hydraulically or pneumatically.
  • the device 10 preferably includes a controller 100 (see FIG Fig. 1 ), which causes an upward movement of the second nozzle body 30 with respect to the first nozzle body 21 to release the m nozzle openings 32 so that adhesive can escape.
  • a controller 100 the movement can also be carried out manually.
  • the hollow needles 24 are designed so that the passage channel 25 has at least one side outlet A1 in the lower region, so that adhesive from the Through passage 25 can enter into a nozzle chamber Z above the valve seat 31.
  • the device 10 preferably includes a controller 100 (see FIG Fig. 1 ), which causes a downward movement of the second nozzle body 30 with respect to the first nozzle body 21 to close the m nozzle openings 32, so that no adhesive can escape.
  • a controller 100 the movement can also be carried out manually.
  • a controller 100 which controls all (movement) processes.
  • the device 10 is preferably designed for dispensing moisture-curing adhesive (preferably 1K-PUR).

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  • Coating Apparatus (AREA)
EP09171388A 2009-09-25 2009-09-25 Dispositif doté d'un agencement de buses en forme de poutre et procédé de dépôt d'une matière adhésive Withdrawn EP2301678A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09171388A EP2301678A1 (fr) 2009-09-25 2009-09-25 Dispositif doté d'un agencement de buses en forme de poutre et procédé de dépôt d'une matière adhésive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09171388A EP2301678A1 (fr) 2009-09-25 2009-09-25 Dispositif doté d'un agencement de buses en forme de poutre et procédé de dépôt d'une matière adhésive

Publications (1)

Publication Number Publication Date
EP2301678A1 true EP2301678A1 (fr) 2011-03-30

Family

ID=41647029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09171388A Withdrawn EP2301678A1 (fr) 2009-09-25 2009-09-25 Dispositif doté d'un agencement de buses en forme de poutre et procédé de dépôt d'une matière adhésive

Country Status (1)

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EP (1) EP2301678A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104492658A (zh) * 2014-12-25 2015-04-08 适新科技（苏州）有限公司 一种用于涂布高粘度酯类的喷嘴
WO2018097974A1 (fr) * 2016-11-28 2018-05-31 Illinois Tool Works Inc. Procédé de protection d'un appareil de distribution d'adhésif, et ce dernier
CN113941476A (zh) * 2020-07-17 2022-01-18 埃克塞尔工业公司 具有可旋转喷嘴的粘性粘合剂的施加装置

Citations (2)

* 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
DE202008015257U1 (de) 2008-02-05 2009-02-26 Robatech Ag Vorrichtung zum Aufbringen eines feuchtigkeitsabgebenden Klebstoffs

Patent Citations (2)

* 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
DE202008015257U1 (de) 2008-02-05 2009-02-26 Robatech Ag Vorrichtung zum Aufbringen eines feuchtigkeitsabgebenden Klebstoffs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104492658A (zh) * 2014-12-25 2015-04-08 适新科技（苏州）有限公司 一种用于涂布高粘度酯类的喷嘴
WO2018097974A1 (fr) * 2016-11-28 2018-05-31 Illinois Tool Works Inc. Procédé de protection d'un appareil de distribution d'adhésif, et ce dernier
CN113941476A (zh) * 2020-07-17 2022-01-18 埃克塞尔工业公司 具有可旋转喷嘴的粘性粘合剂的施加装置

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