EP0850697A2 - Dispositif pour l'application de matériaux fluides sur un substrat, en particulier pour l'application intermittente de colles fluides - Google Patents

Dispositif pour l'application de matériaux fluides sur un substrat, en particulier pour l'application intermittente de colles fluides Download PDF

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Publication number
EP0850697A2
EP0850697A2 EP97121817A EP97121817A EP0850697A2 EP 0850697 A2 EP0850697 A2 EP 0850697A2 EP 97121817 A EP97121817 A EP 97121817A EP 97121817 A EP97121817 A EP 97121817A EP 0850697 A2 EP0850697 A2 EP 0850697A2
Authority
EP
European Patent Office
Prior art keywords
valve body
valve
substrate
section
channel
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
EP97121817A
Other languages
German (de)
English (en)
Other versions
EP0850697B1 (fr
EP0850697A3 (fr
Inventor
Manfred Müller
Andrew Grummt
Thomas Burmester
Hans-Joachim Seedore
Gunther Burmester
Hubert Kufner
Ernst Hering
Andreas Bornkessel
Donald Lohse
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
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Application filed by Nordson Corp filed Critical Nordson Corp
Priority to EP03017309A priority Critical patent/EP1358945B2/fr
Publication of EP0850697A2 publication Critical patent/EP0850697A2/fr
Publication of EP0850697A3 publication Critical patent/EP0850697A3/fr
Application granted granted Critical
Publication of EP0850697B1 publication Critical patent/EP0850697B1/fr
Anticipated expiration legal-status Critical
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    • 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
    • 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
    • B05C5/0237—Fluid actuated valves
    • 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
    • B05C5/0254—Coating heads with slot-shaped outlet

Definitions

  • the present invention relates to a device for applying flowable Material on a movable substrate, especially for intermittent Applying liquid adhesive with at least one feed channel to the Supply of flowable material with at least one nozzle arrangement at least one connected to the feed channel and into an outlet opening for dispensing material outlet channel and with a valve assembly to interrupt the flow of material, which has a movable valve body and has a valve seat, the valve body with the valve seat in such a way cooperates that the flow of material by moving the valve body in a Closed position is interrupted and released into an open position.
  • such a device is used, for example, to flat substrates with liquid adhesive, such as hot melt adhesive to coat.
  • liquid adhesive such as hot melt adhesive to coat.
  • intermittent order is made i.e. that intervals at which the valve body is in the open position and material is applied to the substrate, alternate with intervals, in which the valve body is in the closed position, so that the material application is interrupted. Intermittent jobs often become very short Intervals realized to order zones with short distances to each other to be able to realize.
  • the material flow must be up to Be interrupted 1000 times per minute.
  • the requirement is based on the application pattern created on the substrate posed that a material application zone on the substrate has sharply defined edges having.
  • a material application zone on the substrate has sharply defined edges having.
  • the - in the direction of movement of the Substrate relative to the applicator - side edges, but also the front and rear edges of a material application zone are sharply delimited.
  • requirement for such a sharp delimitation of the front and rear edges is that the Valve body of the valve assembly is quickly moved into its closed position, so that the flow of material from the outlet opening is interrupted equally quickly becomes.
  • a so-called needle valve is used in the prior art for this purpose used that has a needle with a needle tip as the valve body with a valve seat adapted to the shape of the needle tip can be brought into contact.
  • the needle is actuated electro-pneumatically. moves towards the valve seat and comes into contact with it, so that the flow cross section of the feed channel is closed and the material flow thereby being interrupted.
  • the needle tip is moved downstream towards the substrate.
  • glue comes off the needle tip displaced downstream towards the outlet openings. This has the effect that until the needle tip comes into contact with the valve seat material Direction is pressed onto the outlet opening.
  • the Material application to the substrate is not interrupted as abruptly as it is for a Creation of a sharp boundary line in the end area of an application zone would be required. A "dripping" from the outlet opening when closing the Valve arrangement cannot be prevented.
  • the present invention has for its object a device Specify the type mentioned, with the dripping largely avoided can be and sharply delimited material application zones on a substrate can be produced.
  • the object is achieved with a device of the type mentioned in the introduction in that that the valve body by moving against the direction of flow of the material comes into contact with the valve seat to interrupt the material flow.
  • an abrupt interruption of the material flow is achieved an undesirable "dripping" when interrupting the material flow by means of the Valve arrangement largely prevented, so that material application zones with sharp limited edges when applying material to a substrate can.
  • a flat application of Adhesive on a film with a slot nozzle arrangement transverse to the direction of movement realized a straight, "sharp" rear boundary line of the substrate.
  • the flow direction in the open state of the valve arrangement is during the closing movement of the valve body in no material from the valve body Direction pressed on the outlet opening. Rather, in contrast to this even material against the usual flow direction together with the Valve body - moved by a suction and sticking effect - upstream. To this Material is released from the outlet opening during the closing movement abruptly interrupted. The result is a sharp boundary line at the rear edge the material application zone.
  • the valve body is “downstream” according to the invention moves so that the valve body comes free from the valve seat. While This movement becomes material in the direction of flow in front of the valve body is arranged, moved in the direction of the outlet openings of the nozzle arrangement, so that almost simultaneously with the onset of movement of the valve body the closed position in the open position material in the direction of the outlet openings is conveyed by the valve body moving the material in that direction presses. In this way, a sharp boundary line at the beginning or Realize the front edge of an order zone, because the material application almost sets immediately after the valve body starts moving.
  • the order sample on the substrate can be significantly improved according to the invention. A According to the invention, “dripping” can largely be avoided.
  • Valve body attached to a stem portion and realtively points to that Shank section an expanded cross section. So it's easy formed a valve assembly according to the invention.
  • the shaft section is with this Embodiment within a section of the feed channel with a relative to the Shaft section larger diameter movably arranged, and the valve body is also in a structurally simple manner between its opening and Movable closed position.
  • the valve body essentially formed as a ball.
  • the valve body a substantially frusto-conical section which is connected to the valve seat can be brought into contact.
  • material that is in the Feed channel is particularly effective upstream because it moves Displacement of the valve body, here the frustoconical section, occurs that moves the material upstream.
  • the valve body has a essentially adjoining the frustoconical section circular disc-shaped section.
  • the volume and thus the Displacement effect of the valve body further increased.
  • This effect will also achieved in a development in which the valve body another in has a substantially frustoconical section, which is located on the circular disk-shaped Section joins.
  • the valve body is therefore fluidic advantageously designed because it is due to the closing movement its shape displaces material upstream and during the opening movement the material is displaced downstream, so that the effect according to the invention is enhanced becomes.
  • a particularly preferred embodiment of the invention is characterized by this that the shaft section can be pressurized with compressed air on both sides Differential pressure piston is attached and pressurized together with the valve body is movable. With the help of such a differential pressure piston can a high-frequency alternating movement of the valve body from the opening the closed position and vice versa can be realized, making extremely short Phases of applying material to the substrate and extremely short phases of Interruption of the material flow and thus the order can be realized can.
  • the piston has two Opposing, differently sized effective area to which compressed air can be applied on, which can be acted upon independently by compressed air.
  • the differently sized active areas can, for example, have a greater force Close or optionally to open the valve assembly on the piston be applied.
  • the piston is arranged so that it Valve body by means of a force generated on the larger effective area in the Open position is moved.
  • the larger effective area is that of the valve body spaced side of the pressure piston arranged to a to be able to apply greater force to open the valve arrangement.
  • the device can be fluidically optimize it further by opening the valve body in the is essentially arranged in a cylindrical recess.
  • the one before described displacement effect to achieve an abrupt interruption the material flow can be further improved in this way.
  • the object is achieved in a device of the type mentioned, in which the nozzle arrangement in the lower Area near the outlet opening partially during the application with the coming into contact with the substrate moving relative to the outlet opening has outer contact area, solved in that the outer contact area has a curved section diverging relative to the substrate.
  • Such a device ensures that one with the contact area substrate in contact always optimally to the outlet opening of the Nozzle arrangement is performed.
  • optimal coating of the substrate is always relative realized to the outlet opening.
  • the film-like substrate with the help of rollers with a (low) pressure force on the Contact area of the nozzle assembly is pressed.
  • the substrate is not arranged exactly in one plane, but can have a slightly curved course exhibit.
  • Such a curved course has in the from the prior art Technically known devices that have a substantially straight contact portion have, with the result that it between the nozzle assembly and the Substrate can accumulate.
  • the contact area extends from the outlet opening against the direction of movement of the substrate.
  • the infeed area of a film in Direction of movement in front of the outlet opening is thus a previously described Guiding the slide realized.
  • the curved section is in the Cross-section partially circular. In this way, a cheap one Realize leadership in a structurally simple way.
  • the order behavior can be according to another preferred embodiment further optimize that tight in the direction of movement of the substrate a tear-off edge is formed behind the outlet opening, on which the substrate its trajectory comes out of contact with the contact portion. On this way it can be prevented that between the substrate - in shape a film - and material accumulates at the lower portion of the nozzle assembly, that prevents a clean, sharply defined adhesive application.
  • the nozzle arrangement as a slot nozzle arrangement is formed, in which the feed channel for the material in a distribution channel opens, on the downstream at least one outlet channel with a slot-shaped Outlet is connected.
  • This embodiment is further developed in an advantageous manner in that Mouthpiece holder a straight through hole as a channel for feeding Material is formed in the distribution channel by the supply channel with material is fed and its lower outlet opens into the distribution channel.
  • the through hole in the fluid flow is particularly favorable Operation arranged at an angle to a vertical axis. That way you can - Complicated drilling systems within the state of the art which are often present the nozzle arrangement can be avoided, often with blind holes within the Mouthpiece receptacles are formed in which "dead spaces" with respect to the Flow of material is present, which is a clean application of glue counteract especially in intermittent operation.
  • the object in an apparatus of the type mentioned at the beginning, with at least two feed channels, one feed common nozzle arrangement, as well as at least two in one Supply channel arranged valve arrangements controllable by means of a control device are provided, solved in that the valve arrangements such are controllable that both valve arrangements in a first operating state simultaneously release the feed channel for one material order and in a second Operating state of the valve arrangements alternately the respective feed channel release or close.
  • valve arrangements can on the substrate in the generates a material application with a certain thickness in the first operating state when both valve arrangements simultaneously release the feed channel and thus material that comes from two material sources is applied.
  • the valve arrangements are released alternately, so that the common nozzle arrangement alternately from the two feed channels is fed so that the phases of the order through delivery of material through the exit openings and the phases of the interruption of the dispensing of Material can be kept very short.
  • the Valve arrangements can also be controlled in such a way that in a third operating state one valve arrangement releases the associated feed channel and the other Valve arrangement intermittently releases the associated feed channel and closes.
  • these are the feed channels connected with different material sources and are fed from this, so these different materials within the nozzle arrangement mixed together and then applied to the substrate.
  • the device shown in Fig. 1 for applying liquid adhesive to a movable relative to the device in the direction of the arrow Substrate 1 has an application head 2.
  • the upper part of the application head 2 comprises an electro-pneumatically actuable control part 4 (see FIG. 4), which on a Base part 6 is mounted.
  • a nozzle arrangement 8 is on the underside of the base part 6 mounted.
  • the base part 6 is in turn on a stationary, not shown Carrier mounted.
  • the control part 4 is connected to two compressed air lines 10, 11 a compressed air source, not shown, connected, which has a pressure of about 6 provides cash. With the help of a solenoid valve 12, the control part 4 with compressed air be charged.
  • the base part 6 is formed with a bore 7 into which a lower section of the control part 4 is inserted.
  • the base part 6 are in the upper Area two connection bores 21, 23, optionally with a compressed air line can be connected.
  • the Bore 23 closed with a stopper 25.
  • the control part 4 shown enlarged in FIG. 4 is provided with a control element in FIGS. 2 and 3 valve arrangement partially shown for regulating that of the nozzle arrangement 8 dispensed and applied to the substrate 1 amount of adhesive trained to interrupt and release the flow of adhesive.
  • the Valve assembly essentially includes a valve body 14, one with the same connected rod-shaped shaft section 16, and a valve seat 44. Der Valve body 14 cooperates with the valve seat 44 in such a way that the material flow interrupted by movement of the valve body 14 into a closed position and is released by moving into an open position. The valve body 14 comes with a movement against the direction of flow of the material Valve seat in contact to interrupt the material flow.
  • a differential pressure piston 18 is on the upper movable shaft portion 16 attached.
  • the piston 18 is axial in a bore 20 in a base body 22 slidably arranged.
  • the piston 18 has a central bore 20 formed in which a part of the shaft section 16 is arranged.
  • a nut 24 screwed, which secures the piston 18 to the shaft portion 16.
  • a space 26 which can be filled with gas Gas pressure can be applied. As a result, a force can be exerted on the piston 18 be applied. Below the piston 18 another gas can be filled Space 28 formed within the bore 20 in the base body 22 by means of of a connection channel 30 through which compressed air 10 can be applied.
  • the piston 18 has an upper active surface 34 which is larger than a lower one Active surface 36, so that at the same pressure in the rooms 26 and 30 different large resulting forces act on the piston 18. At the same pressures the piston - downward in FIG. 4 - in the direction of the nozzle arrangement 8 are pressed so that the valve body 14 is pressed into its open position becomes.
  • the piston 18 is opposite with O-rings in a manner not described in detail sealed the base body 22.
  • a spiral spring 32 is arranged, which with its spring force on the Piston 18 acts and this - in Fig. 4 up - in the closed position of the Bias valve assembly.
  • the solenoid valve 12 (Fig. 1) opened. This will result in the Room 26 generates a pressure which corresponds approximately to that of the compressed air source and which acts on the active surface 34. In room 28 there is constant pressure from the Compressed air source. Since the effective area 34 is larger than the effective area 28, the Piston 18 moves in the direction of the substrate 1. For closing the valve arrangement and thus interrupting the flow of adhesive, the solenoid valve 12 becomes such switched that the pressure in the space 26 is reduced. For this purpose Compressed air released from the solenoid valve 12 to the environment. Through this The piston 18 is reduced in pressure in the chamber 26 by the on the active surface 36 attacking resulting force "pushed up" and the valve body 14 is moved to the closed position. The spring force of the spring 32 acts here supportive.
  • the stem portion 16 of the valve 14 has a notch 38 as a marking, which can be seen from the outside through a viewing window 40 is visible in the control part 4, so that the position of the movable, on Shaft section 16 attached valve body 14 can be seen from the outside.
  • an adhesive feed channel 46 is formed, which by means of a connection 48 can be fed with adhesive from an adhesive source.
  • a connection 48 can be fed with adhesive from an adhesive source.
  • the Feed channel 46 is essentially a cylindrical bore within a (ring) Body 50 trained.
  • a ring 52 is attached to the lower end of the body 50, which is also provided with a central through hole, which is part of the Feed channel 46 is.
  • valve seat 44 is formed, which in FIGS. 2 and 3 as annular edge is shown.
  • the valve seat 44 can conform to the shape of the valve body 14 be adapted. It can be ground and hardened.
  • O-ring 54 the ring 52 is realistically sealed to the base part 6.
  • the valve body 14 is within a substantially cylindrical Arranged space 56 which is formed in the base part 6.
  • the room 56 a passage 58 follows in the flow direction, through which the adhesive enters Nozzle arrangement 8 can flow.
  • the valve body 14 which is formed in one piece with the shaft section 16 is likewise as the shaft section 16 is rotationally symmetrical and has one the frustoconical section 60 adjoining the shaft section 16, which is in contact with the valve seat 44 in the closed position, as in FIG. 3 is shown.
  • the section 60 is essentially downstream circular disk-shaped section 62, which further downstream in turn frustoconical portion 64 merges with the lower end of the body 14 marked.
  • the body 14 initially has one expanding cross-section, then a constant cross-section and further down a tapered cross-section. He has one Outside diameter that is larger than the inside diameter of the feed channel 46, so that when the shaft section 16 moves together with the valve body 14 the latter comes to rest on the valve seat 44.
  • the diameter of the Shank section 16 is less than that of the feed channel 46, so that between an annular channel is formed.
  • valve body 14 can be essentially a ball or a circular disk be formed, which is attached to the shaft portion 16, preferably is integrally formed with this.
  • the passage 58 opens into one inside the slot nozzle arrangement formed nozzle arrangement 8 formed channel 66, which in a in Fig. 9th mouthpiece receptacle 68 shown formed as a straight through hole is. 9, the channel 66 is arranged obliquely relative to a vertical axis.
  • the mouthpiece receptacle 68 is a mouthpiece 70 10, which is shown separately in FIG. 10 and by means of a bore 71 arranged bolt is screwed to the mouthpiece receptacle 68. in the assembled state shown in Fig.
  • the outlet channels are designed as elongated slots and open at one lower end of the nozzle arrangement 8 (FIG. 1) into slot-shaped outlet openings, from which material can be delivered.
  • the nozzle arrangement 8 has a during the Order at least partially with the moving relative to the outlet opening Outer contact region 74 in contact with the substrate, which on the Mouthpiece 70 is arranged.
  • the contact area 74 has, as shown in FIGS. 1 and 10 can be seen, a curved, diverging relative to the substrate 1 Section. It extends from an outlet opening against the Direction of movement of the substrate 1 - to the left in Fig. 1 - and is in cross section (Fig. 10) partially circular.
  • the substrate is shown and lies on the contact area 74, but it can have a slightly curved course have, for example if it is designed as a film guided by rollers.
  • the moving substrate 1 is from the curved portion of the Contact area 74 to the outlet opening or the plurality in series next to each other arranged outlet openings of the slot nozzle arrangement, such as is indicated in Fig. 10 by a dashed line.
  • the outlet the Nozzle arrangement not aligned exactly in relation to the substrate 1 during operation, for example, because the substrate is not exactly on by a guiding device a desired path or because the entire application head 2 is not is positioned exactly in a desired position on the carrier, then it will Substrate from the contact section also led to the outlet opening.
  • Nozzle arrangement 8 In the direction of movement of the substrate 1 behind an outlet opening Nozzle arrangement 8 has a tear-off edge 76 which is connected to the mouthpiece receptacle 68 is arranged. Runs behind the tear-off edge in the direction of movement of the substrate an edge 79 of the mouthpiece receptacle 68 in an opposite axis 77 (and thus in the figures with respect to a vertical axis) acute angle. 9 illustrated embodiment is the angle between the edge 79 and the axis 77 about 20 °.
  • FIGS. 5 and 6 show an alternative embodiment of an inventive Device for applying flowable material, the two before Application heads 78, 80 described with reference to FIGS. 1 to 4 on a base part 82 attached and arranged substantially at right angles to each other.
  • the device thus has two feed channels, which have a common nozzle arrangement 84 with adhesive.
  • the two valve arrangements of the application heads 78 and 80 can be controlled electro-pneumatically by means of a control device 77.
  • the nozzle arrangement 84 has a mouthpiece receptacle 86 and a mouthpiece 88 attached thereto.
  • the mouthpiece 88 is formed with a curved contact area 74 which comes at least partially into engagement with a substrate.
  • the two valve arrangements of the application heads 78, 80 can be controlled so that in a first operating state, both valve arrangements simultaneously the supply channel 46 release for a material flow and in a second operating state Valve arrangements alternately release or respectively feed channel 46 close. This way, either an alternating intermittent Operation of the two application heads 78, 80 or a simultaneous flow of material through both application heads 78, 80 can be realized. If the two feed channels 46 fed from different material sources (not shown), so can during the first operating state the two from the different Materials originating from materials are mixed together and on a Substrate are applied or alternately in the second operating state apply different materials.
  • FIG. 7 shows part of the application head 78 and the control device 77 and Air lines 90, 92 through which the control part for moving the valve body 14 can be pressurized with compressed air.
  • FIG. 8 shows a further alternative exemplary embodiment of a device for Application of flowable material with two application heads 94, 96 in parallel are arranged to each other and a slot nozzle assembly 98 with material Food.
  • the guns 94, 96 of this device are essentially identical to the application head 2 described with reference to FIGS. 1-4, and can be controlled in the same way as those previously shown in FIGS. 5-7 described device, so that reference to the above description is taken.
  • Using two connections 100, 102 and two adhesive filters 104, 106 adhesive becomes two connections 48 in the control part 4 (cf. FIG. 4) initiated.
  • the adhesive flows can be controlled individually using two Valve arrangements of the application heads 94, 96 independently of one another to the previously described controllable and feed the common slot nozzle arrangement 98.
  • One or more sources of adhesive become liquid adhesive or another flowable material by means of feed lines (not shown) into an application head 2, 78, 80, 94, 96 and introduced into the feed channel 46 (FIGS. 2 to 4)
  • Control section 4 initiated.
  • the valve body 4 (Fig. 2) flows the material through the between the frusto-conical portion 60 and the Valve seat 44 formed passage into the cylindrical space 56 and through the passage 58 into the nozzle assembly 8, there through the oblique in the mouthpiece receptacle 68 trained channel 66 in the substantially horizontal Distribution channel 72 in the mouthpiece 70.
  • the material is in the distribution channel 72 distributed over several slot-shaped outlet channels and flows in the direction of the several slot-shaped outlet openings at the lower end of the nozzle arrangement 8 to be discharged therefrom and applied to the moving substrate 1 to become.
  • the substrate can be a thin film made of plastic, which is made using several rollers to be led.
  • the substrate lies essentially in one plane and stands with the contact area 74, more precisely with a part of the curved Portion of the contact area 74 in contact.
  • optimal guidance and arrangement for the material application of the substrate 1 is realized relative to the outlet opening.
  • Through the tear-off edge 76 in the direction of movement of the substrate behind the outlet opening is ensured that there is no between the mouthpiece receptacle 68 and the substrate 1 Material jams that in the event of detachment from the part of the mouthpiece holder 68, which is opposite to the substrate 1, to an uneven application of material could result.
  • the nozzle arrangement is 8 designed as a slot nozzle arrangement for a flat application, it could also be designed as a nozzle arrangement, the outlet openings of which are different Have shapes.
  • the application heads can be controlled in this way with the aid of the control device 77 be that a continuous or discontinuous intermittent Material is applied to the substrate.
  • By an appropriate Control of the compressed air can the valve body 14 up to about one minute Open or close 1200 times.
  • the piston 18 is via the lines 10, 11, 90, 92 pressurized with compressed air in rooms 26 and 28 with varying pressures can be provided.
  • the Piston 18 In the open position of the valve body 14, the Piston 18 by a downward force in the direction of the substrate 1 in the position shown in Fig. 2 pressed.
  • the solenoid valve 12 (Fig 1) opened, and compressed air acts on the piston 18. Since the active surface 34 is larger than the active surface 36, the piston is moved in the direction of the substrate 1.
  • valve body 14 Due to the movable arrangement of the valve body 14, this acts within the cylindrical space 56 during the closing movement in the manner of an inside of a cylinder arranged piston and produces a pressure reduction in the cylindrical space 56. Furthermore, adhesive adheres to the surface of the valve body 14 so that the adhering material together with the counter to the Flow direction of the material moving valve body during the application of material 14 is "pulled up".
  • valve body 14 By the movement of the valve body 14 upstream during the closing it occurs within the feed channel 46, the cylindrical space 56, the Passage 58 and the outlet channels counter to a (low) backflow the flow direction during the material application, as in Fig. 3 by the registered arrows is indicated, so that reached due to this backflow is that during the closing movement the material suddenly escapes through the Exit openings and thus the material application to the substrate 1 interrupted is, so that an order pattern with sharp boundary lines without essential Trail zones can be applied to the substrate.
  • a movement of the valve body 14 downstream toward the open position is from the valve body 14 material pressed toward the passage 58.
  • the device can be switched using the control device be that both guns open valve assemblies simultaneously have, so that material through both feed channels to the outlet openings (or an outlet opening) is promoted and applied.
  • Will one One valve arrangement operated continuously and the other intermittently Order image are generated on the substrate 1, which zones stronger and has less order on the substrate.

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EP97121817A 1996-12-23 1997-12-11 Dispositif pour l'application de matériaux fluides sur un substrat, en particulier pour l'application intermittente de colles fluides Expired - Lifetime EP0850697B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03017309A EP1358945B2 (fr) 1996-12-23 1997-12-11 Arrangement de buse pour un dispositif pour appliquer un matériau fluide sur un substrat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29622341U DE29622341U1 (de) 1996-12-23 1996-12-23 Vorrichtung zum Auftragen von fließfähigem Material auf ein Substrat, insbesondere zum intermittierenden Auftragen von flüssigem Klebstoff
DE29622341U 1996-12-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP03017309A Division EP1358945B2 (fr) 1996-12-23 1997-12-11 Arrangement de buse pour un dispositif pour appliquer un matériau fluide sur un substrat

Publications (3)

Publication Number Publication Date
EP0850697A2 true EP0850697A2 (fr) 1998-07-01
EP0850697A3 EP0850697A3 (fr) 1999-07-21
EP0850697B1 EP0850697B1 (fr) 2004-08-04

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ID=8033739

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EP03017309A Expired - Lifetime EP1358945B2 (fr) 1996-12-23 1997-12-11 Arrangement de buse pour un dispositif pour appliquer un matériau fluide sur un substrat
EP97121817A Expired - Lifetime EP0850697B1 (fr) 1996-12-23 1997-12-11 Dispositif pour l'application de matériaux fluides sur un substrat, en particulier pour l'application intermittente de colles fluides

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EP03017309A Expired - Lifetime EP1358945B2 (fr) 1996-12-23 1997-12-11 Arrangement de buse pour un dispositif pour appliquer un matériau fluide sur un substrat

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DE102018101801A1 (de) * 2018-01-26 2019-08-01 Scheugenpflug Ag Verfahren zum flächigen, lückenlosen Auftragen eines viskosen Substrates auf einer Platte

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DE10010952A1 (de) * 2000-03-06 2001-09-27 Nordson Corp Westlake Vorrichtung und Verfahren zum intermittierenden Auftragen von fliessfähigem Material
EP1147820A3 (fr) * 2000-04-17 2004-07-28 Illinois Tool Works Inc. Valve anti-gouttes pour adhésif à fusion
CN100465487C (zh) * 2000-04-17 2009-03-04 伊利诺伊工具公司 用于热熔性粘接剂的改进的回吸阀门
DE102018101801A1 (de) * 2018-01-26 2019-08-01 Scheugenpflug Ag Verfahren zum flächigen, lückenlosen Auftragen eines viskosen Substrates auf einer Platte

Also Published As

Publication number Publication date
EP1358945A2 (fr) 2003-11-05
DE29622341U1 (de) 1997-04-03
JP3902851B2 (ja) 2007-04-11
CA2225658A1 (fr) 1998-06-23
EP1358945B2 (fr) 2011-03-23
JPH10192763A (ja) 1998-07-28
EP1358945B1 (fr) 2006-01-25
EP0850697B1 (fr) 2004-08-04
EP1358945A3 (fr) 2004-03-10
DE59711829D1 (de) 2004-09-09
US6164568A (en) 2000-12-26
DE59712557D1 (de) 2006-04-13
EP0850697A3 (fr) 1999-07-21

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