EP1681101A1 - Appareil pour la distribution intermittente de produits fluides - Google Patents

Appareil pour la distribution intermittente de produits fluides Download PDF

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Publication number
EP1681101A1
EP1681101A1 EP06000253A EP06000253A EP1681101A1 EP 1681101 A1 EP1681101 A1 EP 1681101A1 EP 06000253 A EP06000253 A EP 06000253A EP 06000253 A EP06000253 A EP 06000253A EP 1681101 A1 EP1681101 A1 EP 1681101A1
Authority
EP
European Patent Office
Prior art keywords
switching valve
opening
dispensing
compressed air
coil
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
EP06000253A
Other languages
German (de)
English (en)
Other versions
EP1681101B1 (fr
Inventor
Dieter Dr. Baldauf
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.)
Baumer HHS GmbH
Original Assignee
hhs Leimauftrags-Systeme GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34353886&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1681101(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by hhs Leimauftrags-Systeme GmbH filed Critical hhs Leimauftrags-Systeme GmbH
Priority to EP09012730.9A priority Critical patent/EP2138238B1/fr
Publication of EP1681101A1 publication Critical patent/EP1681101A1/fr
Application granted granted Critical
Publication of EP1681101B1 publication Critical patent/EP1681101B1/fr
Not-in-force 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
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1254—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated
    • B05B7/1263—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated pneumatically actuated
    • B05B7/1272—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated pneumatically actuated actuated by gas involved in spraying, i.e. exiting the nozzle, e.g. as a spraying or jet shaping gas
    • B05B7/1281—Serial arrangement, i.e. a single gas stream acting on the controlling means first and flowing downstream thereof to the nozzle
    • 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 a device for the intermittent delivery of fluid media of the preamble of claim 1 corresponding type.
  • Such devices are used in the industry for the partial application of traces of fluid media, in particular adhesives, to a product displaced relative to a fluid medium dispenser. They comprise a dispensing module, which has a fluid channel opening out into a dispensing opening for the fluid medium. Further, a closure element is provided, which is pneumatically actuated between a dispensing opening opening and a dispensing opening occlusive position is displaced.
  • the dispensing module is attached to a base body having a fluid channel for supplying the fluid medium and a compressed air channel for supplying compressed air to the dispensing module.
  • the closure element is coupled in this device with a pneumatically actuated piston, which is arranged in a cylinder chamber such that a compressed air loading displaces the closure element against the action of a return spring in the dispensing opening opening position.
  • the intermittent fluid delivery is effected by intermittently supplying compressed air to the compressed air channel.
  • an external compressed air source with a likewise external valve arrangement is required, by means of which pressurized air is supplied to the compressed air channel in the frequency required for the intermittent delivery of the fluid medium.
  • the invention is therefore based on the object, a device known from US 5407101 A further develop such that the actuation frequency of the closure element is increased.
  • a closure member exhibiting switching valve is turned on, which is adapted to control the dispensing module supplied compressed air so that the closure element in dependence of the applied operating voltage between the dispensing opening opening and closing the dispensing opening Position is displaced, the air volume, which must be filled to open the closure element of the dispensing module with compressed air, compared to the prior art substantially reduced.
  • the device of the invention over the prior art due to the integration of the switching valve in the body more compact outer dimensions, which facilitates the use of the device in industrial equipment, for example in gluing machines.
  • the switching valve comprises a coil for generating an electromagnetic Field and a movable means of the electromagnetic field armature, which is coupled to a closure member of the switching valve.
  • a particularly high efficiency is achieved when the coil is arranged around a portion of a pole and around a portion of the armature, as a result of which the coupling of the armature to the electromagnetic field is particularly effective.
  • the coupling can be further improved if the switching valve comprises a flux guide element which distributes the flow between the pole and the armature such that the closure element of the switching valve is displaced into the open position.
  • the flux guide element may have a non-circular cross-section. It is particularly preferred if it has a rectangular cross-section, since it can then be configured adapted to the outer contour of the two mutually parallel running, planar sides having body.
  • the switching valve comprises means which generate restoring forces, which displace the closure member in the closed position when no actuation voltage is applied. This measure prevents uncontrolled leaking fluid from the discharge opening when the operating voltage collapses, for example due to a technical defect.
  • the masses moved during the actuation of the switching valve can be reduced if the switching valve is designed in such a way that the restoring forces are generated by the compressed air. However, it is preferred to effect the restoring forces by means of a return spring.
  • the base body comprises a heating element.
  • the device is then also suitable to hot melt adhesive, which unfolds its adhesive effect during solidification, apply, as it is commonly used industrially.
  • the maximum operating temperature of the device according to the invention under which a fluid medium can be discharged, is limited by the heat resistance of commercially available coils. An increase in the maximum operating temperature is possible, are provided in the means for cooling the coil. However, it is particularly preferred if the Spuie comprises a winding of a coil provided with a heat-resistant insulation coil wire, as this can be dispensed with complex means for cooling the coil.
  • the closure element of the dispensing module is preferably coupled to a pneumatically operated differential piston in which the restoring forces are generated by a permanently applied pneumatic pressure.
  • the actuating forces for displacing the closure element to open the discharge opening are effected by the fact that upon actuation of the switching valve, the pneumatic pressure is directed to a surface of the differential piston, which is larger than the surface causing the restoring forces and aligned so that the actuating forces counteract the restoring forces.
  • an auxiliary spring acting on the differential piston is preferably additionally provided, which displaces the closure element in the closed position at non-applied pneumatic pressure. This avoids that uncontrolled fluid escapes from the discharge opening when the pneumatic pressure should collapse.
  • the apparatus designated as a whole by 100 in FIG. 1 comprises a dispensing module 1, which has a housing 2 with a rectangular cross section. In the housing 2, a cylinder chamber 3 is formed, which has the shape of a stepped bore.
  • a differential piston 4 is arranged with two piston surfaces of different diameters such that the piston surface 5 closes tightly with the smaller diameter with the cylinder wall of the part 6 of the cylinder chamber 3 with the smaller diameter.
  • the piston surface 7 closes tightly with the part 8 of the cylinder chamber 3, which has the larger diameter.
  • a compression spring 4 ' is supported.
  • the differential piston 4 is connected to a closing element 10 extending vertically from the piston surface 7, which passes through a guide bore 11, in which it is guided in a sliding manner, and extends through a fluid channel 12 as far as a delivery opening 13, into which the fluid channel 12 empties.
  • the closure element 10 can be displaced by means of the differential piston 4 between a position which opens the dispensing opening and a position which closes the dispensing opening, as will be described below.
  • a first compressed air channel 14 opens, the other end to a side wall 15 of the dispensing module 1 in a Opening 16 exits.
  • a second compressed air channel 17 opens, the other end also emerges from the side wall 15 in an opening 18.
  • the fluid channel 12 is arranged in the housing 2 such that it opens into an opening 19 in the side wall 15.
  • the dispensing module 1 is attached with its side wall 15 on the end wall 20 of a base body 21 by a not visible in the drawing screw.
  • the main body comprises a fluid channel 22, the first end of which opens into a connection 23 for a fluid supply hose and the second end of which opens into an opening 19 which is congruent to the opening 19 in the dispensing module 1.
  • the main body 1 comprises electrical connection means 26 for operating a heating device 24 of known type and an electrically actuatable switching valve 25 which is accommodated in the base body 21.
  • the switching valve 25 comprises a coil 27 for generating an electromagnetic field and a displaceable by means of the electromagnetic field armature 28 which is coupled to a closure member 29 of the switching valve 25.
  • the switching valve further includes a pole 30 protruding into the interior of the coil from one end.
  • the armature 28 is arranged such that a portion thereof projects from the other end into the coil 27.
  • the switching valve 25 comprises a flux guide member 31 surrounding the coil and which distributes the flow between the pole 30 and the armature 28 so that the armature 28 is attracted by the pole 30.
  • the flux guide element 31 has a rectangular cross section and an outer contour, which is adapted to theêtachir of the main body 21, that the main body 21 and the flux guide element 31 form flat, rugged outer surfaces.
  • a central compressed air channel 32 is further arranged, one end of which opens into connecting means 33 for connecting a compressed air supply line.
  • the compressed air channel 32 branches in the base body 21 into a passage 34 which is connected via an opening 16 'to the first compressed air channel 14, and into a channel 35 which can be selectively connected via the closure member 29 with the compressed air channel 32.
  • Figs. 1 and 2 the device according to the invention is shown in a state in which it is located when no actuating voltage is applied to the coil 27 and the compressed air channel 32 is acted upon with compressed air.
  • the closing member 29 shuts off the channel 35 from the compressed air channel 32 by abutting against a lower sealing ring 29 "of the main body 21, so that pneumatic pressure is applied to the piston surface 5 via the passage 34 and presses the differential piston 4 downwards the closure element 10 is also pressed down and closes the discharge opening 13th
  • the closure member 29 is also displaced upward due to the pneumatic pressure until it an upper sealing ring 29 'of the main body 21 abuts.
  • the lower sealing ring 29 "is released, and the pneumatic pressure then also acts on the piston surface 7 via the channel 35. Since this is larger than the piston surface 5, the force acting on the piston surface 7 due to the pneumatic pressure is greater than that on the piston surface Piston surfaces 5.
  • the differential piston 4 is displaced upwards together with the closure element 10 according to the drawing, whereby the discharge opening 13 is released It is understood that the pneumatic pressure is chosen such that the pressure acting on the piston surfaces 5, 7 Pressure creates a resultant force which is capable of overcoming the force exerted by the compression spring 4 '.
  • the armature 28 moves with the closure member 29 in the position shown in FIGS. 1 and 2 due the restoring forces acting on it, which are generated by a return spring 36.
  • the return spring 36 is arranged in a provided in the anchor blind hole 37 and rests with its bottom according to the drawing at the bottom 38 of the blind hole 37 from.
  • the upper end 39 of the return spring 36 is supported on the lower end face 40 of the pole 30 from.
  • the upper sealing ring 29 ' is released.
  • the displacement of the differential piston 4 can thus take place exclusively under the action of the applied pneumatic pressure by actuation of the peeling valve 25.
  • the compression spring 4 ' is nevertheless provided so that in the event of a collapse of the pneumatic pressure, the differential piston 4 is displaced to its lower position and the discharge opening 13 is closed by the closure element 10 so as to prevent an uncontrolled escape of the fluid medium to be dispensed.

Landscapes

  • Coating Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
EP06000253A 2005-01-17 2006-01-07 Appareil pour la distribution intermittente de produits fluides Not-in-force EP1681101B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09012730.9A EP2138238B1 (fr) 2005-01-17 2006-01-07 Appareil pour la distribution intermittente de produits fluides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520000656 DE202005000656U1 (de) 2005-01-17 2005-01-17 Vorrichtung zur intermittierenden Abgabe von fluiden Medien

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP09012730.9A Division EP2138238B1 (fr) 2005-01-17 2006-01-07 Appareil pour la distribution intermittente de produits fluides
EP09012730.9 Division-Into 2009-10-08

Publications (2)

Publication Number Publication Date
EP1681101A1 true EP1681101A1 (fr) 2006-07-19
EP1681101B1 EP1681101B1 (fr) 2011-03-02

Family

ID=34353886

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06000253A Not-in-force EP1681101B1 (fr) 2005-01-17 2006-01-07 Appareil pour la distribution intermittente de produits fluides
EP09012730.9A Revoked EP2138238B1 (fr) 2005-01-17 2006-01-07 Appareil pour la distribution intermittente de produits fluides

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09012730.9A Revoked EP2138238B1 (fr) 2005-01-17 2006-01-07 Appareil pour la distribution intermittente de produits fluides

Country Status (3)

Country Link
EP (2) EP1681101B1 (fr)
DE (2) DE202005000656U1 (fr)
ES (2) ES2361035T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060097010A1 (en) 2004-10-28 2006-05-11 Nordson Corporation Device for dispensing a heated liquid
JP5735516B2 (ja) 2009-09-21 2015-06-17 ノードソン コーポレーションＮｏｒｄｓｏｎ Ｃｏｒｐｏｒａｔｉｏｎ 空気圧作動式液体吐出弁
CN112170110B (zh) * 2020-09-27 2021-12-10 巫山县天煜奇叶农业开发有限公司 一种电子商务用根据环境温度自动调节点胶量的辅助装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407101A (en) 1994-04-29 1995-04-18 Nordson Corporation Thermal barrier for hot glue adhesive dispenser
DE10046326A1 (de) * 2000-09-19 2002-04-04 Nordson Corp Vorrichtung zum Auftragen von Fluid, insbesondere Heissschmelzklebstoff, auf ein relativ zu der Vorrichtung bewegbares Substrat
EP1199108A2 (fr) * 2000-10-20 2002-04-24 Nordson Corporation Arrangement de buses, dispositif d'application et méthode d'application
US20020079327A1 (en) * 2000-03-23 2002-06-27 Nordson Corporation Electrically operated viscous fluid dispensing apparatus
EP1384513A1 (fr) * 2001-03-27 2004-01-28 MUSASHI ENGINEERING, Inc. Procede de formation de gouttelettes et dispositif de diffusion de gouttelettes a volume constant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407101A (en) 1994-04-29 1995-04-18 Nordson Corporation Thermal barrier for hot glue adhesive dispenser
US20020079327A1 (en) * 2000-03-23 2002-06-27 Nordson Corporation Electrically operated viscous fluid dispensing apparatus
DE10046326A1 (de) * 2000-09-19 2002-04-04 Nordson Corp Vorrichtung zum Auftragen von Fluid, insbesondere Heissschmelzklebstoff, auf ein relativ zu der Vorrichtung bewegbares Substrat
EP1199108A2 (fr) * 2000-10-20 2002-04-24 Nordson Corporation Arrangement de buses, dispositif d'application et méthode d'application
EP1384513A1 (fr) * 2001-03-27 2004-01-28 MUSASHI ENGINEERING, Inc. Procede de formation de gouttelettes et dispositif de diffusion de gouttelettes a volume constant

Also Published As

Publication number Publication date
EP2138238A1 (fr) 2009-12-30
EP2138238B1 (fr) 2014-04-02
EP1681101B1 (fr) 2011-03-02
ES2361035T3 (es) 2011-06-13
DE202005000656U1 (de) 2005-03-17
ES2470640T3 (es) 2014-06-24
DE502006008969D1 (de) 2011-04-14

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