EP1501640A1 - Vorrichtung zum auftragen von fluid - Google Patents
Vorrichtung zum auftragen von fluidInfo
- Publication number
- EP1501640A1 EP1501640A1 EP04734665A EP04734665A EP1501640A1 EP 1501640 A1 EP1501640 A1 EP 1501640A1 EP 04734665 A EP04734665 A EP 04734665A EP 04734665 A EP04734665 A EP 04734665A EP 1501640 A1 EP1501640 A1 EP 1501640A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slot
- flexible element
- nozzle arrangement
- closure body
- flexible
- 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
Links
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
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0266—Coating heads with slot-shaped outlet adjustable in length, e.g. for coating webs of different width
-
- 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
- B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
Definitions
- the present invention relates to a device for applying fluid to a substrate that can be moved relative to the device, in particular for applying adhesive to foils, with a fluid supply channel that can be connected to a fluid source and is formed in a base body, with at least one application valve for optionally interrupting or releasing the Fluid flow and a slot nozzle arrangement communicating with the fluid supply channel, which has an elongated slot with an outlet opening, the length of the slot being variable by means of a closure body which can be moved in the slot and laterally seals it.
- Devices of this type are often referred to as application heads and are used in various industrial areas to apply adhesives or other liquids to films, packaging material or other substrates.
- the application head is regularly mounted on a frame and the substrate is guided past the application head by a conveyor. In operation, the liquid emerges from the elongated outlet opening of the slot of the slot nozzle arrangement and reaches the surface of the substrate guided past the outlet opening.
- a disadvantage of the construction with the threaded spindles is that they protrude relatively far from the slot nozzle device in the unscrewed state and, if necessary, protrude into the space in a disruptive manner and the result is a relatively large overall length of the entire application device.
- the object of the present invention is to provide an application device which enables the application width to be varied and adapted to different substrates in a structurally simple manner and which avoids a large overall length.
- the invention achieves this object in a device of the type mentioned in the introduction in that the closure body can be moved by means of a flexible element coupled to it.
- the invention enables the length of the slot of the slot nozzle arrangement to be varied in a structurally simple manner with a small overall length of the device and thus a variation in the application width.
- a flexible element coupled to the closure body according to the invention this can be guided in a space-saving manner due to the flexibility. Long threaded spindles protruding from the application device can be avoided according to the invention.
- the flexible element is directly or indirectly coupled to the closure body and can be driven in such a way that the closure body can be moved continuously in the slot in order to be able to adjust the length of the slot to the respective application.
- a closure body that can be moved by means of the flexible element can be provided on one side of the slot or two closure bodies that can be driven by means of two flexible elements so that the slot length can be adjusted on both sides.
- the flexible element is a chain, a toothed belt or a rope, so that the movement of the closure body can be achieved with structurally simple and available means.
- a push-pull chain is particularly preferred so that a closure body can simply be pressed inwards to reduce the slot length and outwards to increase the slot length.
- the push / pull chain has a plurality of push elements that are adjacent in the longitudinal direction of the chain and attached to individual chain links.
- the flexible element be connected at one end to the closure body and be in engagement with a gearwheel which can be driven manually or by a motor to move the closure body.
- An adjustment can be carried out in a simple manner by means of the gearwheel and the locking body can also be locked in the desired position.
- a motor driving the gear wheel or a self-locking gear can be used.
- the flexible element is guided in a guide channel, so that the path of movement of the flexible element is defined and the required tensile and / or compressive forces can be transmitted reliably.
- the guide channel preferably has a first section arranged essentially laterally adjacent to the slot.
- the guide channel has a deflection section and a storage section arranged adjacent to the slot nozzle arrangement for receiving the flexible element.
- the storage section is expediently arranged essentially straight, parallel and below relative to the slot nozzle arrangement.
- the guide channel is formed essentially within a separate housing which can be mounted on the slot nozzle arrangement, so that simple installation is possible and, if appropriate, simple replacement of wear surfaces on the housing, on which the flexible element slides , is possible.
- a stop element for limiting the movability of the flexible element is formed on a section, preferably an end section, of the flexible element. An undesired pushing or pulling out of the flexible element can thus be prevented in a simple manner.
- the position of the flexible element can be determined by means of at least one sensor, preferably a mechanical switch, and that one or more order valves for interrupting or releasing the fluid flow are switched on or off with the aid of the signal provided by the sensor /become.
- the application devices often have a large length and a plurality of application valves arranged over the entire length, which are active or passive depending on the respective setting of the length. Sensors which sense the position of the flexible element can expediently be used for automatic activation or passivation of the respective order valves.
- a gear preferably a worm gear
- the closure body remains in the respective position after adjustment, since the friction within the transmission is sufficient to cause a shift in the fluid forces that usually act on the closure body. to prevent exercise.
- a shift is only possible by actuation using a handwheel or a motor, such as an electric motor.
- FIG. 1 shows a device according to the invention for applying adhesive in a perspective view
- FIG. 2 shows the device according to FIG. 1 in a top view
- FIG. 3 shows the device according to FIG. 1 in a side view with a partial section
- FIG. 4 shows an enlarged section of the device according to FIG. 3;
- FIG. 5 shows an enlarged section of the device according to FIG. 3;
- FIG. 6 shows a section of the flexible element 26, 28 in a perspective view
- Fig. 7 shows the flexible element within a memory section of a guide channel in a perspective view.
- the device shown in the figures for applying fluid (also referred to below as the application head) to a substrate that can be moved relative to the device is used to apply liquid adhesive to foils that are guided past the device.
- the application head also referred to below as the application head
- other substrates such as packaging material or the like could also be surface-coated with adhesive.
- the application head 1 has a metallic base body 2 and a fluid supply channel which can be connected to an adhesive source (not shown) and which is designed as a cylindrical bore in the base body 2 and to which a flexible adhesive line is connected.
- the base body has an upper part 3 and a lower part 5, which are screwed together.
- a cylindrical distribution channel 6 is arranged within the base body 2, which extends over the entire length of the application head 1.
- Half of the distribution channel 6 is designed as a semi-cylindrical recess in the upper part 3 and the other half in the lower part 5 as a semi-cylindrical recess, so that the distribution channel 6 can be cleaned easily.
- the distributor channel 6 communicates with a horizontally arranged slot 8 of a slot nozzle arrangement 10. The slot 8 opens into an elongated outlet opening 12, from which adhesive emerges during operation and is then transferred to the substrate.
- each application valve 14 for selectively interrupting or releasing the flow of adhesive from the fluid supply channel 4 into the distribution channel 6 and thus through the slot 8 are fastened to the base body 2 above the distribution channel 6.
- each application valve 14 is designed as a pneumatically actuable valve and each has a needle 16 (see FIGS. 3 and 4), which is coupled to a pressure gas piston which is movably arranged in a cylinder and which can be moved up and down when pressure is applied to the piston is.
- the lower section of the needle 16 cooperates with a valve seat formed on the base body 2.
- a vertical connecting bore is formed between the fluid supply channel 4 and the distributor channel 6, which is closed by the tip of the needle 16 in the closed position of the application valve and opened in the open position of the needle 16.
- the order valves 14 are connected to a compressed gas line 17.
- a closure body 18 is movably arranged in the slot 8 of the slot nozzle arrangement 10 and seals the slot 8 laterally.
- the closure body 18 is rigidly coupled to a cylindrical piston 20 which is arranged to be axially movable within the distribution channel 6.
- the closure body 18 extends from the piston 20 to the outlet opening 12 of the slot nozzle arrangement 10.
- Such a closure body 18 with piston 20 is also disclosed in WO 00/67914, which goes back to the applicant here and their descriptions, in particular with regard to the piston 20 Closure body 18 is incorporated by reference into this disclosure.
- the application head 1 has two adjusting devices 22, 24 which can be actuated independently of one another and by means of which the pistons 20 together with the closure bodies 18 can be moved within the distributor channel 6 or the slot 8.
- the piston 20 and closing body 18, which can be seen on the right in FIG. 3, are part of the adjusting device 22.
- the left-hand piston 20 and closing body 18 in FIG. 3 are part of the adjusting device 24.
- Each adjusting device 22, 24 has a flexible element 26, 28 according to the invention, which is respectively coupled to the closure body 18 in a manner explained in more detail below and can be driven manually or by means of a gear 30, 32 which engages with the flexible element 26, 28 stands.
- the adjusting device 22 has a shaft 34 which can be rotated by means of a handwheel 33 and which is rotatably mounted on the base body 2 by means of two plates 36, 38 and bearings (not shown).
- a reduction gear 40 in the form of a worm gear serves to reduce the rotational movement of the shaft 34.
- An input shaft of the gear 42 is coupled to the shaft 34.
- An output shaft of the transmission 40 is coupled to a shaft 44 (see FIG. 3) which extends within a spacer tube 46 and drives the gearwheel 30 by positive connection when the handwheel 33 rotates.
- the flexible element 26 in the form of a push / pull chain is in positive engagement with the gearwheel 30, so that it is moved when the shaft 44 rotates and the piston 20 and the closure body 18 are within the Distribution channel 6 or the slot 8 moves depending on the direction of rotation to vary the length of the slot 8.
- the flexible element 26, the structure of which is explained in more detail with reference to FIGS. 4 to 7, is arranged within a housing 46 and is guided in a guide channel 48.
- the guide channel 48 has a first, straight section 50, which runs essentially flush with respect to the distribution channel 6 and the slot 8, a deflection section 52 for deflecting the flexible element and a lower straight storage section 54 for receiving the flexible element.
- the storage section 54 is straight and is arranged essentially parallel to the distribution channel 6 below the slot nozzle arrangement.
- the housing 46 is mounted on the application head 1 and is preferably made of aluminum.
- the gearwheel 30 is accommodated within a housing section 47 on the right in FIG. 1.
- the adjusting device 24 for the closure body 18, which is on the left in the figures, is in principle designed like the adjusting device 22 and has a handwheel 56 which is coupled to an input shaft of a reduction gear 58, the output shaft of which is connected to a shaft 60 for driving the gearwheel 32 is connected.
- the flexible element 28 according to the invention is within a left Section 62 of the housing 46 is arranged within a guide channel 64 and is coupled at one end to the piston 20 and the closure body 18.
- the guide channel 64 likewise has a first straight section 66, an adjoining deflection section 88 and a lower storage section 70 which is connected to the storage section 54 for the flexible element 26 shown in FIG.
- the flexible element 20, 26 has at its end section arranged in the storage section 70 of the guide channel 64 or 48 a stop element 72 which limits the movement of the flexible element by abutment on a stop surface 74 (see FIG. 4) ,
- the stop element 72 is essentially a cylindrical piston with an upper recess 76 and is connected to the flexible element 20 by means of a pin 78.
- a chain 80 (only partially shown) made of metallic chain links 82, 84 (FIG. 6) which extends over the entire length of the flexible element 20, 26 is connected by means of several countersunk screws 86 to a plurality of immediately adjacent, in contact and also over the entire length of the flexible element 20, 26 extending push members 88 connected.
- the flexible elements 26, 28 are driven by means of the chains 80, which are in engagement with the toothed wheels 30, 32, and due to the pushing elements 88, compressive forces can be transmitted in a defined manner during the insertion of the closure elements 18 (with the piston 20).
- the push elements 88 are approximately U-shaped in cross-sections and, as can be seen in FIG. 4, allow the flexible elements to be curved. Alternatively, it would also be conceivable to use a simpler chain, a toothed belt, a rope or the like.
- motor drives for example in the form of an electric motor, can also be used to move the flexible elements 26, 28.
- a movable closure body 20 and a flexible element 28 and adjusting device can be provided only on one side of the slot nozzle arrangement, if this is expedient for the application.
- it can then be expedient to mount the entire application head 1 so that it can be moved and locked in the direction of the longitudinal axis of the slot.
- the piston 20 is connected to the flexible element 26, 28 by means of pins 90 which are coupled to the last chain link 82.
- the flexible element 26, 28 is dimensioned in such a way that it can be moved into the distribution channel 6 and is preferably guided in a defined manner therein, so that it cannot be bent out when it is pushed in.
- FIG. 7 shows the flexible element 28 of the - left adjusting device 24 - in the area of the storage section 70 of the guide channel 64 formed on the housing 46 together with two enlarged sensors in the form of mechanical switches 92, 94.
- the switches 92, 94 each have a roller 98 fastened to a swivel lever 96, which come into contact with the flexible element 28 and, in the event of contact, actuate a pin 100 in such a way that contact is made and initiated by the sensor (switches 92, 94) Signal is provided.
- This signal can be an electrical signal or a signal in the form of a gas pressure which is transmitted through a gas line.
- the signal from the sensors is used to determine the position of the flexible element 28 and thus the position of the closure body and the piston 20 within the slot 8 or the distribution channel 6, so that depending on the respective position those order valves 14 (FIGS. 1- 4) are activated, which lie in the region of the section of the slot 8 lying between the two closure bodies 18, while the other unused order valves 14 are then passivated, so that no fluid escapes there.
- Several sensors in the form of switches 94 are provided (see also FIG. 3) in order to be able to achieve an activation or passivation corresponding to the number of order valves 14.
Landscapes
- Coating Apparatus (AREA)
- Polarising Elements (AREA)
- Nozzles (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20308337U | 2003-05-26 | ||
DE20308337U DE20308337U1 (de) | 2003-05-26 | 2003-05-26 | Vorrichtung zum Auftragen von Fluid |
PCT/EP2004/005594 WO2004103577A1 (de) | 2003-05-26 | 2004-05-25 | Vorrichtung zum auftragen von fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1501640A1 true EP1501640A1 (de) | 2005-02-02 |
EP1501640B1 EP1501640B1 (de) | 2006-11-22 |
Family
ID=27763218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04734665A Not-in-force EP1501640B1 (de) | 2003-05-26 | 2004-05-25 | Vorrichtung zum auftragen von fluid |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1501640B1 (de) |
AT (1) | ATE345879T1 (de) |
DE (2) | DE20308337U1 (de) |
ES (1) | ES2275221T3 (de) |
WO (1) | WO2004103577A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006014743U1 (de) | 2006-09-22 | 2006-11-23 | Nordson Corporation, Westlake | Vorrichtung zum Auftragen von Fluiden wie Klebstoff, insbesondere Schmelzkleber |
ES2424166T3 (es) | 2006-09-22 | 2013-09-27 | Nordson Corporation | Aparato para aplicar fluidos tales como adhesivo, en particular adhesivo de fusión en caliente |
DE202007002156U1 (de) * | 2007-02-09 | 2007-04-12 | Nordson Corp | Vorrichtung zum Auftragen von Fluiden wie Klebstoff |
US8640641B2 (en) | 2010-07-02 | 2014-02-04 | Nordson Corporation | Multi-slot applicator with automatic closing function |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248579A (en) * | 1979-10-10 | 1981-02-03 | Jyohoku Seiko Co., Ltd. | Film extrusion die |
DE29908150U1 (de) * | 1999-05-10 | 1999-08-05 | Nordson Corp | Vorrichtung zum Auftragen von Fluid |
DE10129627C1 (de) * | 2001-06-20 | 2003-02-06 | Reifenhaeuser Masch | Extrusionsdüse |
-
2003
- 2003-05-26 DE DE20308337U patent/DE20308337U1/de not_active Expired - Lifetime
-
2004
- 2004-05-25 AT AT04734665T patent/ATE345879T1/de not_active IP Right Cessation
- 2004-05-25 ES ES04734665T patent/ES2275221T3/es active Active
- 2004-05-25 EP EP04734665A patent/EP1501640B1/de not_active Not-in-force
- 2004-05-25 DE DE502004002056T patent/DE502004002056D1/de active Active
- 2004-05-25 WO PCT/EP2004/005594 patent/WO2004103577A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2004103577A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE20308337U1 (de) | 2003-08-14 |
EP1501640B1 (de) | 2006-11-22 |
WO2004103577A1 (de) | 2004-12-02 |
ES2275221T3 (es) | 2007-06-01 |
ATE345879T1 (de) | 2006-12-15 |
DE502004002056D1 (de) | 2007-01-04 |
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