EP1623769B1 - Tête d'application - Google Patents

Tête d'application Download PDF

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Publication number
EP1623769B1
EP1623769B1 EP20040018262 EP04018262A EP1623769B1 EP 1623769 B1 EP1623769 B1 EP 1623769B1 EP 20040018262 EP20040018262 EP 20040018262 EP 04018262 A EP04018262 A EP 04018262A EP 1623769 B1 EP1623769 B1 EP 1623769B1
Authority
EP
European Patent Office
Prior art keywords
chamber
spool
control slide
outlet opening
passage
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.)
Expired - Fee Related
Application number
EP20040018262
Other languages
German (de)
English (en)
Other versions
EP1623769A1 (fr
Inventor
Marcel Puffe
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.)
Nordson Corp
Original Assignee
Nordson Corp
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 Nordson Corp filed Critical Nordson Corp
Priority to EP20040018262 priority Critical patent/EP1623769B1/fr
Priority to DE200450010807 priority patent/DE502004010807D1/de
Publication of EP1623769A1 publication Critical patent/EP1623769A1/fr
Application granted granted Critical
Publication of EP1623769B1 publication Critical patent/EP1623769B1/fr
Expired - Fee Related 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
    • B05C5/0225—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
    • B05C5/0229—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 the valve being a gate valve or a sliding valve
    • B05C5/0233—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 the valve being a gate valve or a sliding valve rotating valve, e.g. rotating perforated cylinder
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1034—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves specially designed for conducting intermittent application of small quantities, e.g. drops, of coating material

Definitions

  • the invention relates to a gun for applying a liquid medium, such as hot melt adhesive or cold glue, on a substrate, which comprises a housing which forms a chamber with a feed channel and with an outlet opening.
  • Application heads of this type are used in particular for an intermittent application of the liquid, in particular sticky medium in the form of dots or beads on a guided past the application head web material.
  • an application head of the type mentioned which comprises a control member having a passageway and a rotatably driven spool.
  • the passage channel is connected to the inlet side with a feed channel for molten hot melt adhesive and with a nozzle opening for the molten hot melt adhesive outlet side.
  • the spool releases the passageway at least once and closes it again.
  • an application head for liquid media which has a nozzle needle which is axially displaceably mounted in the chamber and passes freely through the chamber.
  • the nozzle needle emerges from the chamber and sits with its tip on a nozzle needle seat of the outlet nozzle.
  • the nozzle needle is connected to an actuating device which serves for the axial displacement of the nozzle needle.
  • US 5,148,946 discloses a method and apparatus for providing a predetermined amount of liquid having the features of the preamble of claim 1.
  • a rotatable shaft is disposed in a feed channel. The liquid is provided by rotating the rotatable shaft in a predetermined orientation in which a liquid flow is possible. After a certain amount of the liquid has been provided, the rotatable shaft is rotated through an angle of rotation to another orientation and the flow of liquid is stopped.
  • the DE 28 05 379 shows a jet head for generating a pulsating liquid radiation for massage, with a rotatably mounted in a housing the liquid jet periodically interrupting the interrupter rotor.
  • US 4,204,646 shows a showerhead with a rotor for effecting a pulsating jet flow or continuous spray delivery from the showerhead.
  • the outlet opening is released at least once during a 360 ° rotation of the spool and closed again.
  • the advantage of the present embodiment is, in particular, that in the chamber in which the spool occupies the front side and this concludes, a pressure can be built up so that the liquid medium - at opaque with the outlet opening - with pressure from the Outlet is squeezed out. In this way, in particular with intermetierendem order a bead of adhesive with a uniform application pattern can be generated.
  • the outlet opening and the at least one passage are arranged axially parallel to the axis of rotation. This configuration makes it possible that several passages distributed over the circumference can be arranged in the spool.
  • the spool has multiple passages extending over different sized arcuate sections about the axis of rotation. To this Way can be applied per 360 ° rotation of the spool several adhesive dots, the adhesive dots can be different lengths. According to a further embodiment, a plurality of passages may be provided which have the same distance to the respective adjacent passage. By this embodiment, an adhesive seam is produced with uniform application pattern.
  • the spool has a pressure surface which limits the interior of the chamber in the direction of the outlet opening and which can be acted upon by the entering into the chamber liquid medium.
  • the pressure surface of the spool is preferably designed annular or circular and corresponds approximately to a vertical axis to the rotational cross-sectional area of the chamber. In this way it is prevented that liquid medium passes through a gap between spool and side wall of the housing and the outlet opening.
  • the housing comprises a cover and a bottom, wherein a shaft of the spool is mounted in the lid and the spool rests on the ground.
  • the lid and the bottom form in the direction of the axis of rotation opposite end faces that define the chamber.
  • the spool preferably has a bearing journal which is mounted on the axis of rotation in a bearing bore in the bottom of the housing.
  • the spool has a spherical portion-shaped control surface which rests on a corresponding hollow spherical bottom of the chamber.
  • the spool may also have a tapered control surface which rests on a corresponding hollow conical bottom of the chamber.
  • the spool is disc-shaped and lies on the flat bottom the chamber up.
  • the at least one passage can be designed in the form of an outwardly open circular cutout.
  • the spool has an inner channel with an inlet and an outlet for the passage of compressed air, wherein the input is constantly acted upon by compressed air and the output is connected in a rotational position of the spool with the outlet opening.
  • the channel preferably extends through the shaft of the spool. If the outlet opening of the channel coincide with the outlet opening of the housing, residues of the liquid medium from the outlet opening and the outlet nozzle can be pressed out by the compressed air. In this way, a clean and uniform adhesive seam is produced.
  • the bottom of the housing facing the end of the spool is designed spherical segment and adapted to the corresponding hollow spherical bottom of the housing.
  • the bottom end of the spool may also have any other, adapted to the bottom of the housing mold.
  • the outlet opening and the mouth of the at least one passage are arranged on the axis of rotation.
  • the feed channel is arranged in a side wall of the housing and the inlet of the passage in the peripheral surface of the spool.
  • FIGS. 1a) and 1b show a gun 1 with a housing 2, which has a chamber 3 with a feed channel 4 and an outlet opening 5, and a spool 6.
  • the spool 6 is rotatably mounted in the chamber 3 and comprises a
  • the housing 2 is cup-shaped and has a cover 9, which closes the housing at the top, and a bottom 14.
  • a bearing 11 is provided which rotatably holds the shaft 7 of the spool 6.
  • the bearing 11 is held by a retaining ring 12 axially fixed in the lid 9.
  • the spool 6 On the bottom side, the spool 6 a bearing pin 13 which is seated in a corresponding bearing bore in the bottom 14 of the housing 2 for purposes of storage.
  • the spool 6 is designed spherical segment, wherein the shape of the spool 6 is adapted to the hollow spherical inner surface of the bottom 14 forming wall of the housing 2. In this case, a gap 21 is formed between a control surface 26 of the spool 6 and the bottom 14 due to manufacturing tolerances.
  • the spool 6 has at its the feed channel 4 facing the end of a flat pressure surface 22 whose cross section corresponds to the cross section of the chamber 3. In the chamber 3 by the supply channel 4 incoming high viscosity sticky medium, in particular hot melt adhesive or cold glue, generated in the chamber 3 an overpressure, so that the pressure surface 22 of the spool 6 is acted upon in the direction of the bottom 14 of the housing 2.
  • two first passages 15, 17 are provided in the form of holes and a lying between these second passage 16 in the form of a slot.
  • the second passage 16 extends over a larger arc section ⁇ about the axis of rotation A than the first two passages 15, 17.
  • the passages 15, 16, 17 extend over the height of the spool 6 at a constant distance R parallel to the axis of rotation A and connect the chamber 3 to the outlet opening 5 of the housing 2.
  • R parallel to the axis of rotation A
  • the passages 15, 16, 17 extend over the height of the spool 6 at a constant distance R parallel to the axis of rotation A and connect the chamber 3 to the outlet opening 5 of the housing 2.
  • the present embodiment By means of the present embodiment with a plurality of passages distributed over the circumference of the control slide 6, it is achieved that an intermittent application of the adhesive in the form of dots and beads located between two points can be applied to a sheet material passed by the application head.
  • the length of the applied beads can be adjusted or varied by the rotational speed of the spool.
  • the spool 6 For applications in which a continuous adhesive application is to be generated, the spool 6 is brought into a position in which one of the first passages 15, 17 with the outlet opening 5 dekken. If the adhesive application is to be prevented over a certain distance, the spool valve 6 can be rotated into a position in which the spool valve 8 covers the outlet opening 5.
  • FIG. 2 shows a variant of an order header after FIG. 1 in longitudinal section and in cross section, wherein the structure substantially to the structure of the applicator head FIG. 1 equivalent.
  • the same components are provided with the same reference numbers. Distinctive components are provided with two subscripts.
  • the present application head 1 has a control slide 6 2 with a channel 23, which serves for the passage of compressed air through the outlet opening 5.
  • the channel 23 extends from the inlet 27 in the flow direction of the compressed air initially on the axis of rotation A centered by the shaft 7 2 to the lower portion of the spool 6 2 , where he radially away from the axis of rotation A to a radius of the distance between the outlet opening 5 and axis of rotation A corresponds, runs and ends in the outlet 24.
  • the spool 6 2 can thus be converted into a rotational position in which cover the output 24 of the channel 23 with the outlet opening 5 of the housing. On In this way residues of the adhesive from the outlet opening 5 and the outlet nozzle 18 can be "shot out".
  • This embodiment has the advantage that the adhesive jobs in intermittent operation of the application head, in which the order takes place in the form of dots or beads, are accurate and no adhesive threads are drawn between two application points. As in particular from FIG. 2b ), only one passage 15 is provided, which is offset from the exit 24 of the channel 23 by 180 ° about the axis of rotation A. By rotation of the spool 6 2 adhesive dots or adhesive beads are applied to a guided past the application head web material.
  • FIG. 3 a second embodiment of an applicator head according to the invention is shown, which essentially according to that embodiment FIG. 1 equivalent.
  • the spool 6 is 3 conical and the chamber 3 to the bottom 14 toward the final wall of the housing 2 designed in accordance with a hollow cone.
  • This embodiment offers compared to those FIG. 1 the advantage of easier production.
  • the spool 6 3 has a first passage 15 3 and an in the direction of rotation of the spool 6 3 adjoining the elongated second passage 17 3 .
  • an adhesive seam can be applied to a material passed by the applicator head while the control slide is rotating, whereby the distance between an adhesive dot and a bead of adhesive is equal to the division ratio of the arcuate portions between the first passage 15 3 and the second passage 17 3 corresponds to a full revolution of the spool.
  • the gun according to FIG. 4 Issues a variant of the order header FIG. 3 with channel 23 for the passage of compressed air, wherein the structure substantially to the gun after FIG. 2 equivalent.
  • the same components are provided with the same reference numerals and different components are marked with four subscripted reference numerals.
  • the present application head 1 a spool 6 4 with a passage 23 having an input 27 and an output 24, which serves for the passage of compressed air through the outlet opening.
  • FIG. 5 is a further embodiment of an applicator head according to the invention with a housing 2, which forms a cylindrical chamber 3, and a disc-shaped control slide 6 5 shown. Moreover, the embodiment shown corresponds essentially to the gun after FIG. 1 , to the description of which reference is made.
  • the disk-shaped control slide 6 5 has four regularly distributed over the circumference of first passages 15 5 which ensure an intermittent outflow of adhesive from the chamber 3 through the outlet opening 5 and the outlet nozzle 18 with a rotating spool 6. 5 Characterized in that the passages 15 5 are arranged regularly distributed over the circumference, is - at a constant rotational speed of the spool - an adhesive seam produced whose adhesive dots each have the same distance from each other.
  • the spool 6 6 four radial arms 25, so that each formed between two arms passages 15 6 are formed in the form of Randausappelgeber.
  • the chamber 3 In a rotational position in which none of the arms 25 covers the outlet opening 5, the chamber 3 is directly connected to the outlet opening, so that adhesive can pass unhindered from the applicator head through the outlet nozzle 18.
  • the spool 6 6 is located on the bottom 14 of the housing 2.
  • FIG. 7 Another embodiment shows FIG. 7 , It is shown an applicator head with a substantially cylindrical housing 2, which has a chamber 3 with a feed channel 4 and an outlet opening 5, in which a control slide 6 7 is seated rotatably about its axis of rotation A.
  • the feed channel 4 is arranged in a side wall of the housing 2 and opens - in the illustrated rotational position of the spool 6 7 - in a passage 15 7 of the spool 6. 7
  • the passage 15 7 extends from the feed channel 4 in the direction of the bottom 14 of the housing 2 facing the end and opens on the axis of rotation A in the outlet opening 5 of the housing 2.
  • the end of the spool 6 7 is designed spherical segment and adapted to the hollow spherical inner surface of the bottom 14 forming wall of the housing 2.
  • 26 of the control slide 6 7 and the bottom 14 is formed a gap 21 between the control surface. So that the adhesive does not penetrate into this gap 21 and 6 7 pushes the control slide from the bottom 14, the spool is urged in the direction towards the bottom 14 of the housing 2 6 7, which is represented by an arrow.
  • the spool 6 7 rotates about the axis of rotation A, so that when the spool 6 7 is with its passage 15 7 in a sectional plane with the feed channel 4, adhesive from a connector not shown here connectable to the housing through the feed channel 4 and the passage 15 7 to the outlet opening 5 can be applied to a past the applicator head 1 medium.
  • an outlet nozzle 18 may be attached to the outlet opening 5 of the housing 2 through which the adhesive passes.
  • the connection between the feed channel 4 and outlet opening 5 is interrupted by the control slide 6 7 , so that no adhesive is applied.
  • an adhesive seam is produced which arises from adhesive dots which adjoin one another.
  • the length of the applied dots or beads can be varied by the rotational speed of the control slide 6 7 .
  • the control slide 6 7 is brought into a position in which the passage 15 7 in a sectional plane with the feed channel 4.
  • the advantage of this embodiment is that the outlet opening 5 centrally on the axis of rotation A, which at the same time represents the symmetry axis of the applicator head, is arranged so that an accurate positioning and application of adhesive is made possible.
  • the size of the applicator head characterized in that a chamber is eliminated, kept small.

Claims (6)

  1. Tête d'application pour l'application d'un milieu liquide, par exemple une colle thermofusible ou une colle à froid, sur un substrat, comprenant un logement (2) avec une chambre (3) à symétrie de rotation par rapport à un axe de rotation (A), un canal d'alimentation (4) menant dans la chambre (3) et une ouverture de sortie (5) de la chambre (3) sur le côté frontal, ainsi qu'un tiroir de commande (6) monté de manière rotative et pouvant être entraîné en rotation autour de l'axe de rotation (A), qui est placé sur le côté frontal dans la chambre (3) et limite un espace intérieur libre de la chambre (3) et est pourvu d'au moins un passage (15) pour l'écoulement du milieu liquide de la chambre (3) dans l'ouverture de sortie (5),
    caractérisée par le fait que le tiroir de commande (6) est pourvu de plusieurs passages (15, 16, 17) qui s'étendent sur des portions d'arc (α) de tailles différentes autour de l'axe de rotation (A).
  2. Tête d'application selon la revendication 1,
    caractérisée par le fait que l'on prévoit plusieurs passages (15) qui sont situés à la même distance du passage respectivement contigu.
  3. Tête d'application selon l'une des revendications 1 à 2,
    caractérisée par le fait que le logement (2) comprend un couvercle (9) et un fond (14), un arbre (7) du tiroir de commande (6) étant logé dans le couvercle (9) et le tiroir de commande reposant sur le fond (14)
  4. Tête d'application selon l'une des revendications 1 à 3,
    caractérisée par le fait que le tiroir de commande (6) a une surface de commande (26) en forme de portion de sphère qui repose sur un fond (14) correspondant de la chambre (3) qui a la forme d'une sphère creuse, ou par le fait que le tiroir de commande (6) a une surface de commande (26) conique qui repose sur un fond (14) correspondant de la chambre (3) qui a la forme d'un cône creux, ou par le fait que le tiroir de commande (6) a la forme d'un disque et repose sur le fond (14) de la chambre (3).
  5. Tête d'application selon l'une des revendications 1 à 4,
    caractérisée par le fait que le au moins un passage (15) a la forme d'une découpe du bord ouverte vers l'extérieur.
  6. Tête d'application selon l'une des revendications 1 à 6,
    caractérisée par le fait que le tiroir de commande (6) comporte un canal intérieur (23) pourvu d'une entrée (27) et d'une sortie (24) pour le passage d'air comprimé, l'entrée (27) pouvant être constamment alimentée en air comprimé et la sortie étant reliée à l'ouverture de sortie (5) dans une position de rotation du tiroir de commande (6).
EP20040018262 2004-08-02 2004-08-02 Tête d'application Expired - Fee Related EP1623769B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20040018262 EP1623769B1 (fr) 2004-08-02 2004-08-02 Tête d'application
DE200450010807 DE502004010807D1 (de) 2004-08-02 2004-08-02 Auftragskopf

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040018262 EP1623769B1 (fr) 2004-08-02 2004-08-02 Tête d'application

Publications (2)

Publication Number Publication Date
EP1623769A1 EP1623769A1 (fr) 2006-02-08
EP1623769B1 true EP1623769B1 (fr) 2010-02-24

Family

ID=34926026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040018262 Expired - Fee Related EP1623769B1 (fr) 2004-08-02 2004-08-02 Tête d'application

Country Status (2)

Country Link
EP (1) EP1623769B1 (fr)
DE (1) DE502004010807D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026049A1 (de) * 2005-06-03 2006-12-07 Sca Schucker Gmbh & Co. Kg Verfahren zum Auftragen einer pastösen Masse
CN100462765C (zh) * 2006-03-17 2009-02-18 鸿富锦精密工业（深圳）有限公司 相机镜头用点胶器
DE102017125229A1 (de) * 2017-10-27 2019-05-02 Atlas Copco Ias Gmbh Vorrichtung zum Auftragen eines viskosen Materials

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177927A (en) * 1977-12-14 1979-12-11 Simmons Thomas R Apparatus for shaping and positioning fluid dispersal patterns
DE2805379C2 (de) * 1978-02-09 1979-12-20 Schmalenberger Gmbh & Co, 7400 Tuebingen Strahlkopf zur Erzeugung einer pulsierenden Flüssigkeitsstrahlung für Massagen, insbesondere Unterwassermassagen
US4204646A (en) * 1979-01-22 1980-05-27 Harold Shames Hand-held pulsating shower
SE459478B (sv) * 1987-10-14 1989-07-10 Scandot System Ab Anordning vid ventil avsedd foer utmatning av hoegviskoest medium
JP2532950B2 (ja) * 1989-09-13 1996-09-11 富士写真フイルム株式会社 流体定量吐出方法及び装置
DE19714029C2 (de) 1997-04-04 1999-06-10 Bargen Rudolf Von Auftragskopf
DE19748908C1 (de) 1997-11-05 1999-04-22 Wolfgang Puffe Auftragskopf mit einer Kleberdüse mit Dreiecksnadel

Also Published As

Publication number Publication date
DE502004010807D1 (de) 2010-04-08
EP1623769A1 (fr) 2006-02-08

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