EP3703864B1 - Fluid application device having a flow distributing channel - Google Patents
Fluid application device having a flow distributing channel Download PDFInfo
- Publication number
- EP3703864B1 EP3703864B1 EP18804774.0A EP18804774A EP3703864B1 EP 3703864 B1 EP3703864 B1 EP 3703864B1 EP 18804774 A EP18804774 A EP 18804774A EP 3703864 B1 EP3703864 B1 EP 3703864B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- flow
- conduit
- nozzle assembly
- branch
- 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.)
- Active
Links
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- 239000000463 material Substances 0.000 claims description 23
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- 239000003292 glue Substances 0.000 description 16
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- 239000004831 Hot glue Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
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- 229920002334 Spandex Polymers 0.000 description 1
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Images
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
- B05C5/0241—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 for applying liquid or other fluent material to elongated work, e.g. wires, cables, tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
-
- 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
-
- 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 present invention relates to a nozzle assembly for a fluid application device as defined in the preamble of claim 1, and to a fluid application device as defined in claim 6.
- Such a nozzle and fluid application device is known from WO 2015/112265 A1 .
- US 4 680 595 A discloses an ink jet print head comprising a nozzle assembly having a kind of flow reversal and divider section.
- DE 40 10 262 A1 refers to a nozzle for applying viscous fluids which, however, neither uses a second fluid nor a flow reversal and divider section.
- Nonwoven fabrics are engineering fabrics that provide specific functions such as absorbency, liquid repellence, resilience, stretch, softness, strength, flame retardant protection, easy cleaning, cushioning, filtering, use as a bacterial barrier and sterility.
- nonwoven materials can provide a spectrum of products with diverse properties and can be used alone or as components of hygiene apparel, home furnishings, health care, engineering, industrial and consumer goods.
- a plurality of elasticated strands may be positioned on and bonded to the nonwoven materials to, for example, allow for flexibility fitting around an object or a person.
- the strands may be bonded to the nonwoven fabric with an adhesive, such as glue.
- the strands are fed past a nozzle on an adhesive application device.
- the nozzle may include a plurality of outlets through which the glue may be discharged.
- a second fluid, such as air may be discharged through separate outlets to control the application of the glue such that the glue is oscillated across the respective strands as the strands pass by the nozzle.
- the glue may be discharged as a fiber, and the fiber is oscillated by the air.
- An adhesive application device may apply the glue to the strands with either a contact nozzle or a non-contact nozzle.
- a contact nozzle discharges a volume of substantially stationary glue while a substrate, such as the strand, is fed by the glue.
- the strand is in contact with the glue and the glue adheres to the strand as a result of the contact.
- the glue may be discharged from an outlet as a fiber.
- the glue fiber is discharged over a gap between the outlet and the strand, and is ultimately received on the strand.
- Discharging of the glue fiber may be controlled by a second fluid, such as air, discharged from adjacent outlets, to oscillate the glue fiber during application onto the strand.
- a non-contact nozzle may be beneficial for applying the glue fiber on the strand in a desired pattern, for example, in a substantially sinusoidal pattern.
- a line speed i.e., a speed at which the strand is fed past the nozzle, typically cannot exceed about 400 meters per minute (mpm) to achieve the desired pattern using a non-contact nozzle.
- a higher line speed may be achieved with a contact nozzle.
- a contact nozzle is limited to applying the glue onto the strand in a substantially linear pattern.
- a fluid application device having a contact nozzle configured to apply the fluid onto the strand in a non-linear pattern such that the fluid may be applied over a wider area of the strands.
- a nozzle assembly as defined in claim 1 is provided as well as a fluid application device as defined in claim 6.
- FIG. 10A, 10B , 14A, 14B, 15A and 15B show the claimed invention, whereas the other Figures show embodiments which are useful for the understanding of the invention.
- FIG. 1 is a side perspective view of a fluid application device 10 according to an embodiment described herein.
- the fluid application device 10 may be used to apply a first fluid onto an article.
- the fluid application device 10 may apply a first fluid onto an article.
- the first fluid may be a viscous fluid that is a liquefied material heated or non-heated between about 10 and 50,000 centipoise (cps).
- the first fluid may be, for example, an adhesive
- the article may be, for example, an elastic or non-elastic strand 12 of material. That is, in one embodiment, the fluid application device 10 is part of a strand coating system.
- the adhesive may be applied to the strand 12 so that the strand 12 may be adhered to a substrate 14, such as a nonwoven material.
- the strand 12 in one embodiment, may be made from an elastic material and may be in either a stretched condition or a relaxed condition as the first fluid is applied.
- the strand 12 of material may be, for example, spandex, rubber or other similar elastic material.
- the fluid application device 10 includes an applicator head 16.
- the applicator head 16 may include a first fluid supply unit 18 and a second fluid supply unit 20.
- the fluid application device 10 also includes a nozzle assembly 22 fluidically coupled to the applicator head 16.
- the first fluid supply unit 18 is configured to receive the first fluid Fl from a first fluid source (not shown)
- the second fluid supply unit 20 is configured to receive a second fluid F2 from a second fluid source (not shown).
- the nozzle assembly 22 is fluidically coupled to, i.e., is in fluid communication with, the first fluid supply unit 18.
- the nozzle assembly 22 may also be fluidically coupled to, i.e., may be in fluid communication with, the second fluid supply unit 20. Accordingly, the nozzle assembly 22 may receive the first fluid F1 from the first fluid supply unit 18 and the second fluid F2 from the second fluid supply unit 20.
- the applicator head 16 may also include an adapter 24 secured to at least one of the first fluid supply unit 18 and second fluid supply unit 20.
- the adapter 24 is positioned adjacent to the nozzle assembly 22 and is fluidically coupled to, i.e., is in fluid communication with, the nozzle assembly 22.
- the adapter 24 is fluidically coupled to one of or both of the first fluid supply unit 18 and second fluid supply unit 20, such that the nozzle assembly 22 may receive the first fluid and the second fluid via the adapter 24. That is, the adapter 24 is in fluid communication with at least one of the first fluid supply unit 18 and the second fluid supply unit 20 and also the nozzle assembly 22.
- the adapter 24 is configured to have the nozzle assembly 22 secured thereto such that the nozzle assembly 22 may be properly positioned and oriented relative the applicator head 16 and/or a path along which the strands 12 travel.
- the applicator head 16 may also include a flow control module 26.
- the flow control module 26 may include a valve or series of valves to regulate a flow of the first fluid and second fluid from the first fluid supply unit 18 and second fluid supply unit 20, respectively, to the nozzle assembly 22.
- the flow control module 26 and the adapter 24 may be integrated such that the adapter 24 and the flow control module 26 are one and the same. That is, in some embodiments, the adapter 24 and flow control module 26 are implemented as the same unit.
- This unit provides an adhesive path between one of or both of the first and second fluid supply units 18, 20 and the nozzle assembly 22.
- This unit, i.e., the combined adapter 24 and flow control module 26 may also include valving to start and stop the flow of adhesive.
- FIG. 2 is a front perspective view of the fluid application device 10 according to an exemplary embodiment.
- the nozzle assembly 22 may be removably secured to the adapter 24 or other adjacent component of the applicator head 16.
- the nozzle assembly 22 may be a contact nozzle assembly 22.
- the nozzle assembly 22 includes an orifice 28, through which the first fluid F1 (see FIG. 4 ) may be applied directly on the strand 12.
- Each orifice 28 may have a width of approximately 0.016-0.020 inches (0.406-0.508 mm), but is not limited thereto.
- the width of the orifices 28 may be varied to accommodate different sizes of strands 12.
- the second fluid F2 (see FIG. 4 ) may also be discharged adjacent to or at the orifice 28 as described further below.
- the second fluid F2 may be used to control the application of the first fluid on the strand 12, for example, by moving the first fluid F1 back and forth across a width of, or at least partially around an outer circumference of, the strand 12 as the first fluid F1 is applied.
- the first fluid F1 may be an adhesive, such as a hot melt adhesive.
- the adhesive may be discharged from the orifice 28, for example, as a bead that is contacted directly by the strand 12.
- the applicator head 16 may be heated to either melt the first fluid or maintain the first fluid F 1 in a melted condition.
- the first fluid supply unit 18, the second fluid supply unit 20, and/or the nozzle assembly 22 may be heated, and thus, may also radiate heat outwardly.
- the applicator head 16 may also include a heater.
- the second fluid F2 may be, for example, air, and may be used to control the discharge of the first fluid F1 at the orifice 28 of the nozzle assembly 22 and onto the strand 12 as described above.
- there are two branches 174a, 174b (see FIGS. 3 and 4 ) configured to discharge the second fluid F2 adjacent to each orifice 28 that discharges the first fluid F1 as described further below. It is understood, however, that the number of branches 174a, 174b associated with each orifice 28 may vary.
- the second fluid may be alternately discharged from the outlets adjacent to each orifice 28 to cause the first fluid F1 to fluctuate and during application to the strand 12.
- the fluid application device 10 further includes a strand engagement device 30.
- the strand engagement device 30 may be formed integrally with the applicator head 16. Alternatively, the strand engagement device 30 may be secured to the applicator head 16 or other component of the fluid application device 10 with a suitable fastener, including, but not limited to, bolts, screws, rivets, adhesives, welds and the like.
- the strand engagement device 30 is configured to engage the strands 12 and move the strands 12 toward or away from the applicator head 16 and nozzle assembly 22 based on a line condition (active or static) of the fluid application device 10, as described further below.
- the contact nozzle assembly 22 further includes a depending guide section 32 to assist in positioning of the strands 12 relative to the orifices 28 and branches 174a, 174b (see FIGS. 3 and 4 ) of the nozzle assembly 22.
- the guide section 32 also includes at least one guide slot 34 through which the strand 12 may be fed.
- the guide slot 34 includes an open end 36 and a closed end 38.
- the closed end 38 is positioned immediately adjacent to the orifice 28.
- the open end 36 may be formed in a substantially inverted v-shape, while the closed end 38 may be rounded or curved so that it substantially matches a profile of the strand 12.
- the guide slot 34 may have a substantially constant width between the open end 36 and closed end 38.
- the closed end 38 may act as a limit or stop for the strands 12 to position the strands 12 at the desired position relative the orifices 28 and branches 174a, 174b (see FIGS. 3 and 4 ) for application of the first fluid F1.
- the strand 12 contacts the closed end 38.
- the strand 12 may be spaced from, but in close proximity to the closed end 38.
- the at least one guide slot 34 may include three guide slots 34. However, it is understood that the number of guide slots 34 may vary, and is not limited to the example above.
- Each guide slot 34 is associated with a corresponding orifice 28 of the nozzle assembly 22. That is, each guide slot 34 is substantially aligned with a corresponding orifice 28 of the nozzle assembly 22.
- the closed end 38 of respective guide slots 34 may be aligned with respective orifices 28.
- the strand engagement device 30 includes an engagement arm 44 configured to support and/or guide the strand or strands 12.
- the engagement arm 44 is adjustable to move the strands 12 within, or relative to, respective guide slots 34 to position the strands 12 relative to the respective orifices 28 and outlets.
- FIG. 2 shows the engagement arm 44 in a first position.
- the engagement arm 44 is adjustable between a first position, as shown in FIG. 2 , and a second position (not shown).
- the first position corresponds to a position where the engagement arm 44 is spaced a first distance from the applicator head 16.
- the first distance is sufficient to prevent or limit damage, such as burn through, to the strands 12 caused from heat radiating from the applicator head 16 and/or nozzle assembly 22.
- the engagement arm 44 in the first position may space the strands 12 approximately 3-5 mm from a heat source of the applicator head 16. It may be desirable to maintain the engagement arm 44 in the first position when the fluid application device is in a static line condition, i.e., when the strands 12 are not being fed past respective orifices 28.
- the second position corresponds to a position where the engagement arm 44 is spaced a second distance, less than the first distance, from the applicator head 16, such that the strands 12 are moved closer to the applicator head 16 and the respective orifices 28.
- the second position of the engagement arm 44 positions the strands approximately at or partially within the orifices 28. That is, the second position of the engagement arm 44 generally corresponds to a position where the first fluid F 1 may be applied directly on the strand 12.
- Moving the engagement arm 44 to, and maintaining the engagement arm in, the second position may be beneficial when the fluid application device 10 is in an active line condition, i.e., when the strands 12 are being fed past respective orifices 28, so that the first fluid F 1 may be efficiently applied on the strands 12 and overspray may be reduced.
- the engagement arm 44 may be adjusted by an actuating assembly 48.
- the actuating assembly 48 may be, for example, a pneumatically controlled piston 50 and cylinder 52.
- the piston 50 may be movable within the cylinder 52 in response to air or another gas being introduced into the cylinder 52.
- the piston 50 may be connected directly or indirectly to the engagement arm 44 such that movement of the piston 50 in and out of the cylinder 52 causes the engagement arm 44 to move toward or away from the applicator head 16.
- the nozzle assembly 22 may be formed as a modular unit. That is, the nozzle assembly 22 may be selectively removed from and secured to the fluid application device 10. For example, the nozzle assembly 22 may be selectively removed from and secured to the applicator head 16, and more specifically, in some embodiments, the adapter 24. Accordingly, the nozzle assembly 22 may be replaced in the event a new or different nozzle assembly is desired or required.
- the nozzle assembly 22 is selectively removable from and securable to the fluid application device 10 by way of at least one securing element 74 ( FIG. 2 ).
- the nozzle assembly 22 includes at least one securing opening 76 extending therethrough, each securing opening 76 configured to receive a respective securing element 74.
- the nozzle assembly 22 may include two securing openings 76, each configured to receive a respective securing element 74. It is understood that the number of securing openings 76 is not limited to the example above, however. Individual securing openings 76 may be formed as an opening or slot extending through the nozzle assembly 22. The opening or slot may be closed about its periphery or include an open side along an edge of the nozzle assembly 22. The securing elements 74 extend through the securing openings 76 and are received in corresponding bores (not shown) in the fluid application device 10 to secure the nozzle assembly 22 to the applicator head 16. This allows for a modular design of the fluid application device 10 and nozzle assembly 22 to facilitate maintenance, replacement or the like.
- FIG. 3 is a plan view of contact nozzle assembly components according to an embodiment described.
- the nozzle assembly 22 may be formed by a plurality of laminated or stacked plates 122a-h.
- the nozzle assembly includes first plate 122a, second plate 122b, third plate 122c, fourth plate 122d, fifth plate 122e, sixth plate 122f, seventh plate 122g and eighth plate 122h. It is understood, however, that the number of plates 122 in the nozzle assembly 22 may vary and is not limited to the example shown in FIG. 3 .
- FIGS. 4A-4H are enlarged views of the first through eighth plates, 122a-122h, respectively, shown in FIG. 3 .
- the nozzle assembly 22 includes a fluidic oscillator configured to control application of the first fluid F1 onto the strand 12 such that the first fluid F1 may be applied in a non-linear pattern.
- the fluidic oscillator may discharge a second fluid F2 at opposite sides of the orifice 28, via first and second branches 174a, 174b, to cause the first fluid F1 to be applied in a non-linear pattern across a width or at least a portion of the outer circumference, of the strand 12.
- the nozzle assembly 22 includes a first conduit 130 in which the first fluid F1 may flow.
- the fluidic oscillator of the nozzle assembly 22 may be formed by a second conduit 132 within the nozzle assembly 22, an oscillator conduit 134 in fluid communication with the second conduit 132, and an application conduit 136, fluidically connected to the first conduit 130 and second conduit 132.
- the first conduit 130 is configured to a deliver the first fluid F1 to the application conduit 136.
- the first conduit 130 includes a first inlet 138 configured to receive the first fluid F 1 from the first fluid supply module 18. It is understood that the inlet 138 may be formed in a side of plate of the nozzle assembly 22 facing toward the applicator, i.e., away from remaining plates of the nozzle assembly, such that the first fluid F 1 may be received in the first conduit 130.
- the first inlet 138 may be formed on a side of the first plate configured to abut the applicator head 16, or other adjacent component, from which the first fluid is discharged.
- the first conduit 130 may be generally triangular in cross-section, with rounded corners.
- the first conduit 130 may also include a width and height. In one example, the width is greater than the height. However, it is understood that these configurations are described for purposes of example only, and the present disclosure is not limited thereto.
- the first conduit may be formed in different suitable cross-sectional shapes and have varying relative dimensions of width and height.
- the second conduit 132 is formed in the nozzle assembly 22 and is configured to deliver the second fluid F2 to the application conduit 136.
- the second conduit 132 includes a second inlet 140 configured to receive the second fluid F2 from the second fluid supply module 20. It is understood that the second inlet 140 may be formed in a plate of the nozzle assembly 22, for example, first plate 122a, so that the second fluid F2 is received in the second conduit 132 from the second inlet 140.
- the second conduit 132 may include one or more flow-splitting sections 142 ( FIGS. 4C and 4D ), as described further below, where the second conduit 132 may be split so as to deliver the second fluid F2 to first and second branches 174a, 174b of the application conduit 136.
- the flow-splitting section 142 may include a first branch feed hole 144a and a second branch feed hole 144b ( FIG. 4C ). The first branch feed hole 144a and second branch feed hole 144b may be in direct fluid communication with the application conduit 136 so as to supply the second fluid F2 to the application conduit 136 ( FIG. 4B ).
- the second conduit 132 may include a first portion 146 ( FIGS. 4B-4E ), a second portion 148 ( FIGS. 4C-4E ) and a reservoir 150 ( FIG. 4F ) spacing apart and fluidically connecting the first portion 146 and the second portion 148.
- the first portion 146 extends between the second inlet 140 and the reservoir 150 generally in a first direction D1 ( FIG. 5 ).
- the first portion 146 may be formed as an elongated opening, having a generally inverted "v,” or "u,” shape in cross-section.
- other angled or curved elongated shapes, or non-angled or non-curved shapes that do not interfere with fastening openings 80 may be suitable as well.
- the second portion 148 extends between the reservoir 150 and the application conduit 136 generally in a second direction D2 ( FIG. 5 ).
- the first direction D1 and second direction D2 are generally opposite to one another.
- the reservoir 150 extends generally perpendicularly between the first portion 146 and the second portion 148, but is not limited to this configuration.
- first direction D1 refers to the direction from the second inlet 140 to the reservoir 150, and may include variations in the direction as a result of the specific geometry and configuration of the first portion 146.
- second direction D2 refers to the direction from the reservoir 150 to application conduit 136, and may include variations in the direction as a result of the specific geometry and configuration of the second portion 148.
- the reservoir 150 is configured to receive the second fluid F2, flowing in the first direction D 1, from the first portion 146 of the second conduit 132.
- the reservoir 150 may be formed substantially in a U-shape.
- the reservoir 150 may include first and second receiving legs 152a, 152b configured to receive the second fluid F2 from the first portion 146 of the second conduit 132.
- the reservoir 150 may further include a cross-leg 154 fluidically connected to the first and second receiving legs 152a, 152b and configured to receive the second fluid F2 from the first and second receiving legs 152a, 152b.
- the cross-leg 154 is fluidically connected to the second portion 148 of the second conduit 132 and is configured to deliver the second fluid F2 to the second portion 148 such that the second fluid F2 may flow in the second direction D2 to the application conduit 136. It is understood that various other shapes and configurations for the reservoir 150 are envisioned that allow for the second fluid F2 to flow from the first portion 146 to the second portion 148 of the second conduit 132.
- the second portion 148 of the second conduit 132 may include one or more body feed holes 156 fluidically connected to the reservoir 150 and configured to receive the second fluid F2 from the reservoir 150.
- the body feed hole 156 is configured to receive the second fluid F2 from the cross-leg 154 of the reservoir 150.
- the body feed hole 156 is fluidically connected to the flow-splitting section 142.
- the flow-splitting section 142 may include a generally body-shaped portion.
- the body-shaped portion may include a head 160, first and second arms 162a, 162b and first and second legs 164a, 164b.
- the head 160 of the flow-splitting section 142 is fluidically connected to the body feed hole 156 and is configured to receive the second fluid F2 therefrom.
- the second fluid F2, received in the head 160 of the flow-splitting section 142 may then to the first and second arms 162a, 162b and first and second legs 164a, 164b of the flow-splitting section 142.
- the flow-splitting section 142 is configured to split the flow of the second fluid F2.
- the first leg 164a ( FIG. 4D ) of the flow-splitting section 142 may be aligned with and fluidically connected to the first branch feed hole 144a ( FIG. 4C ) and the second leg 164b ( FIG. 4D ) of the flow-splitting section 142 may be aligned with and fluidically connected to the second branch feed hole 144b ( FIG. 4C ).
- first and second branch feed holes 144a, 144b may receive the second fluid F2 from the first and second legs 164a, 164b, respectively, of the flow-splitting section 142.
- the first and second branch feed holes 144a, 144b are fluidically connected to the application conduit 136 and are configured to deliver the second fluid F2 to the application conduit 136 as described further below.
- the oscillator conduit 134 may be formed in the nozzle assembly 22.
- the oscillator conduit 134 is fluidically connected to the second conduit 132, for example, at the flow-splitting section 142 and is configured to vary a pressure of the second fluid F2 flowing through the flow-splitting section 142, in part, by creating or amplifying a turbulent flow in the second fluid F2.
- the oscillator conduit 134 includes one or more pairs of arm feed holes, each pair of arm feed holes including first and second arm feed holes 166a, 166b and one or more pairs of leg feed holes, each pair of leg feed holes including including first and second leg feed holes 168a, 168b.
- the first and second arm feed holes 166a, 166b are aligned with and fluidically connected to the first arm 162a and second arm 162b, respectively, of the flow-splitting section 142.
- the first and second leg feed holes 168a, 168b are aligned with and fluidically connected to the first leg 164a and second leg 164b, respectively, of the flow-splitting section 142.
- the oscillator conduit 134 further includes one or more pairs of oscillator slots, each pair including first and second oscillator slots 170a, 170b.
- the first oscillator slot 170a is aligned with and fluidically connected to the first arm feed hole 166a and the first leg feed hole 168a.
- the second oscillator slot 170b is aligned with and fluidically connected to the second arm feed hole 166b and the second leg feed hole 168b.
- the first oscillator slot 170a is configured to receive the second fluid F2 from the first leg feed hole 168a and discharge the second fluid F2 through the first arm feed hole 168b.
- the second oscillator slot 170b is configured to receive the second fluid F2 from the second leg feed hole 168b and discharge the second fluid F2 through the second arm feed hole 166b.
- the application conduit 136 includes a receptacle 172, the first branch 174a and the second branch 174b.
- the receptacle 172 is fluidically connected to the first conduit 130, and thus, is configured to receive the first fluid F1 from the first conduit 130.
- the first branch 174a and the second branch 174b are aligned with and fluidically connected to the first branch feed hole 144a and second branch feed hole 144b, respectively. Accordingly, the first branch 174a and the second branch 174b are configured to receive the second fluid F2 from the first branch feed hole 144a and second branch feed hole 144b, respectively.
- the receptacle 172, the first branch 174a and the second branch 174b are fluidically connected to the orifice 28.
- the second portion 148 of the second conduit 132, the oscillator conduit 134, and the application conduit 136 define a flow path for the second fluid F2 between the reservoir 150 and the orifice 28. It is understood that multiple flow paths may be provided in the nozzle assembly 22 to control the application of the first fluid F1 onto additional strands of material 12.
- the fluidic oscillator includes three flow-splitting sections 142, each flow-splitting section 142 having a body-shaped portion, first branch feed hole 144a and second branch feed hole 142b, and three body feed holes 156, formed in the second portion 148 of the second conduit 132.
- the oscillator conduit 134 may include three pairs of arm feed holes 166a, 166b, three pairs of leg feed holes 168a, 168b and three pairs of oscillator slots 170a, 170b.
- the nozzle assembly as shown in FIG. 4B , for example, may include three application conduits136. Accordingly, the first fluid F1 may be applied on three strands via three respective application conduits 136.
- the first conduit 130 may be fluidically connected to each application conduit 136, and thus, may supply the first fluid F1 to respective receptacles of the application conduits 136.
- the first portion 146 of the of the second conduit 132 may supply the second fluid F2 to the reservoir 150, and in turn, to the second portion 148 of the second conduit 132, the oscillator conduits 134 and the application conduits 136.
- the configurations shown in FIGS. 3 and 4A-4F are non-limiting, and that the number of flow-splitting sections 142, including the body-shaped portions, first branch feed holes 144a, and second branch feed holes 144b, body feed holes 156, arm feed hole pairs 166a, 166b, leg feed hole pairs 168a, 168b, oscillator slot pairs 170a, 170b, and application conduits 136 may vary depending on the number of strands of material 12 the nozzle assembly 22 is configured to accommodate.
- the nozzle assembly 22 may be configured to accommodate, for example, anywhere from one strand to ten strands, but is not limited to this range.
- the nozzle assembly 22 may be formed by a plurality of laminated or stacked plates. In one embodiment, the nozzle assembly 22 is formed by eight plates 122a-h.
- the first conduit 130, second conduit 132, oscillator conduit 134 and application conduit 136 may be formed in and configured to extend in one or more plates.
- the first conduit 130 may be formed in the first plate 122a.
- the first inlet 136 may be formed at a side of the first plate 122a facing an adjacent component, such as the adapter 24.
- the first conduit 130 may be formed through a thickness of the first plate 122a.
- the second inlet 140 may be formed in the first plate 122a as well.
- the second conduit 132 as shown in FIGS. 4A-4F , may extend through the thickness of the first plate 122a, the second plate 122b, the third plate 122c, the fourth plate 122d, the fifth plate 122e and the sixth plate 122f.
- the first portion 146 of the second conduit 132 extends through the second plate 122b, the third plate 122c, the fourth plate 122d and the fifth plate 122e.
- the first portion 146 may be formed as an elongated, angled or curved opening in the second through fifth plates 122b-e. These elongated openings may be similarly positioned on the plates 122b-e so that they are substantially aligned when the nozzle assembly 22 is assembled and secured to the adapter 24.
- the reservoir 150 may be formed in the sixth plate 122f.
- the second portion 148 of the second conduit 132 may be formed in the third plate 122c, fourth plate 122d and fifth plate 122e.
- the body feed hole 156 may be formed in the fifth plate 122e
- the flow-splitting section 142 may be formed in the fourth plate 122d
- the first and second branch feed holes 144a, 144b may be formed in the third plate 122c.
- the oscillator conduit 134 may be formed in the fifth plate 122e and sixth plate 122f.
- the first and second arm feed holes 166a, 166b and the first and second leg feed holes 168a, 168b may be formed in the fifth plate 122e.
- the first and second oscillator slots 170a, 170b may be formed in the sixth plate 122f.
- the application conduit 136 including the receptacle 172, first branch 174a and the second branch 174b may be formed in the second plate 122b.
- the orifice 28 may be formed in the second plate 122b as well.
- the at least one guide slot 34 may be formed in the first, second and third plates 122a-c as described below and shown in FIGS. 4A-C .
- the depending guide section 32 is formed on first plate 122a, second plate 122b and third plate 122c ( FIGS. 4A-4C ).
- the guide slots 34 are formed on the depending guide section 32 on the first, second and third plates 122a, 122b, 122c as well.
- Each guide slot 34 may include a first guide slot segment 34a formed on the first plate 122a, a second guide slot segment 34b formed on the second plate 122b, and a third guide slot segment 34c formed on the on the third plate 122c.
- the first guide slot segment 34a includes an open end 36a and a closed end 38a.
- the closed end 38a may include a curved surface configured to substantially match a profile of the strand 12 and act as a stop for the strand 12 to properly position the strand 12 relative to the orifice 28.
- the second guide slot segment 34b includes an open end 36b.
- the open end 36b may include a substantially inverted v-shaped portion as described above.
- the second guide slot segment 34b is in communication with the orifice 28 at an end opposite to the open end 36b.
- the third guide slot segment 34c includes an open end 36c and a closed end 38c.
- the open end 36c may include a substantially inverted v-shaped portion as described above.
- the closed end 38c of the third guide slot segment 34c may include a substantially square or rectangular portion having a width greater than the width of an adjacent portion of the guide slot segment 34c.
- the nozzle assembly 22 includes three guide slots 34, each guide slot 34 including first, second and third guide slot segments 34a-c.
- the number of guide slots 34 may vary to accommodate different number of strands 12.
- the number of guide slots 34 may correspond to the number of application conduits 136.
- the first guide slot segment 34a, second guide slot segment 34b and third guide slot segment 34c are substantially aligned to form the guide slot 34.
- the strand 12 may be received through the respective open ends 36a, 36b, 36c, i.e., the open end 36 of the guide slot 34, and moved to the closed end 38 of the guide slot 34.
- the closed end 38 of the guide slot 34 is defined by the first closed end 38a and third closed end 38c.
- the orifice 28 is formed in the second plate 122b immediately adjacent to and between the closed ends 38a, 38c.
- the seventh plate 122g and eighth plate 122h are positioned at an opposite end of the nozzle assembly 22 from the first plate 122a.
- the seventh plate 122g acts as a seal that forms a boundary for the second conduit 132. That is, the seventh plate 122g is configured to seal the second conduit 132 at the reservoir 150 and oscillator slots 170a, 170b.
- the eighth plate 122h is an end plate for increasing the structural integrity of the nozzle assembly 22.
- the eighth plate 122h may include a beveled edge.
- At least one fastening hole 80 may be formed in each of the plates 122a-h. In one embodiment, three fastening holes 80 are formed in each plate 122a-h. However, it is understood that the present disclosure is not limited to this configuration and the number of fastening holes 80 may vary.
- the fastening holes 80 of the plates 122a-h are aligned with one another so as to receive a fastener 82 ( FIGS. 1 and 2 ) through each series of aligned fastening holes 80.
- the fastener 82 is configured to tightly fasten the plates 122a-h together so that leakage of the first fluid F1 and/or second fluid F2 between individual plates 122a-h is limited or prevented.
- FIG. 5 is an exploded perspective view of the nozzle assembly 22 according to an embodiment described herein.
- the first inlet 138 is configured to receive the first fluid F1 from the first fluid supply module 18.
- the first conduit 130 is configured to receive the first fluid F1, via the first inlet 138 and supply the first fluid F1 to the application conduit 136.
- the receptacle 172 of the application conduit 136 receives the first fluid F 1, and is configured to supply the first fluid F 1 to the orifice 28 for application onto the stand of material 12.
- the nozzle assembly 22 includes three application conduits 136 to apply the first fluid on three respective strands 12.
- each of application conduits 136 may be fed from a single, common, first conduit 130.
- the nozzle assembly 22 is configured to receive the second fluid F2 through the second inlet 140.
- the second conduit 132 is configured to receive the second fluid F2 from the second inlet 140 and feed the second fluid F2 through the nozzle assembly 22 to the application conduit 136.
- the first portion 146 of the second conduit 132 receives the second fluid F2 from the second inlet 140 and supplies the second fluid F2 to the reservoir 150.
- the reservoir 150 is configured to receive the second fluid F2 from the first portion 146 and discharge the second fluid F2 to the second portion 148 of the second conduit 132.
- each body feed hole 156 may receive the second fluid F2 from the reservoir 150.
- Each body feed hole 156 supplies the second fluid F2 to a respective flow-splitting section 142.
- the second fluid F2 may be received at a respective head 160 of each flow-splitting section 142 from the corresponding body feed hole 156.
- the second fluid F2 may flow through each flow-splitting section 142 from the head 160 to the first and second legs 164a, 164b.
- the first and second branch feed holes 144a, 144b are configured to receive the second fluid F2 from respective first and second legs 164a, 164b for each flow-splitting section 142. Accordingly, the first and second branch feed holes 144a, 144b may supply the second fluid F2 to corresponding first and second branches 174a, 174b of a respective application conduit 136.
- a turbulent flow of the second fluid F2 in the second portion 148 of the second channel may result in the second fluid F2 being received at the first and second legs 164a, 164b from the head 160 at the flow-splitting section 142 at different pressures.
- a portion of the fluid at the higher pressure flows into the oscillator conduit 134, while fluid at the lower pressure flows to a corresponding branch supply feed hole 144a or 144b.
- the second fluid F2 may be initially received at the first leg 164a at a higher pressure, and at the second leg 164b at a lower pressure relative to the first leg 164a.
- the second fluid F2 received in the first leg 164a, at the higher pressure may be at least partially discharged to the first leg feed hole 168a of the oscillator conduit 134 and then into the first oscillator slot 170a.
- the second fluid F2 may then flow through the first oscillator slot 170a and be discharged from the first oscillator slot 170a through the first arm feed hole 166a of the oscillator conduit 134.
- This portion of second fluid F2 may then be received in the first arm 162a of the flow-splitting section 142.
- Another portion of the higher pressure second fluid F2 initially received in the first leg 164a is discharged to the first branch feed hole 144a, and in turn, to the first branch 174a of the application conduit 136.
- the second fluid F2 initially received in the second leg 164b, at the lower pressure, may be discharged from the second leg 164b to the second branch feed hole 144b.
- the second fluid F2 may flow though the second branch feed hole 144b and into the second branch 174b of the application conduit 136.
- the second fluid F2 received at the first arm 162a from the oscillator conduit 134, at a higher pressure, may then flow into the second leg 164b of the flow-splitting section 142 due to the initial lower pressure of the second fluid in the second leg 164b.
- a portion of the second fluid F2 may be discharged to the second leg feed hole 168b of the oscillator conduit 134 and then into the second oscillator slot 170b.
- the second fluid F2 may then flow through the second oscillator slot 170b and be discharged through the second arm feed hole 166b of the oscillator conduit 134.
- This portion of second fluid F2 may then be received in the second arm 162b of the flow-splitting section 142.
- Another portion of the higher pressure second fluid F2 received in the second leg 164b is discharged to the second branch feed hole 144b, and in turn, to the second branch 174b of the application conduit 136.
- the second fluid F2 in the first leg 164a may be discharged from the first leg 164a to the first branch feed hole 144a.
- the second fluid F2 may flow though the first branch feed hole 144a and into the first branch 174a of the application conduit 136.
- the second fluid F2 may be supplied to the first and second branch feed holes 144a, 144b at alternating higher and lower relative pressures, and in turn, to the first branch 174a and second branch 174b at alternating higher and lower relative pressures.
- the varying pressures of the second fluid F2 supplied to the first and second branches 174a, 174b cause the second fluid F2 to be discharged to the orifice 28 at different pressures, thereby causing the first fluid F1 to be fluctuated back and forth across a width of the strand 12.
- this configuration causes a lateral fluctuation in first fluid F1 as it is applied onto the strand 12, such that the first fluid F1 is applied in an irregular, non-predetermined, and/or non-repeatable pattern.
- the first fluid F 1 may be an adhesive, such as a hot melt adhesive that is gathered in the receptacle 172 of the application conduit 136 and is forced through the orifice 28 for direct application on the strand 12, which is positioned at the orifice 28.
- the first and second branches 174a, 174b may be positioned on opposite sides of the orifice 28.
- the second fluid F2 may be, for example, air, and may be discharged from the first branch 174a and second branch 174b at varying pressures causing the first fluid F1 to fluctuate across a width of the strand 12 during application.
- a contact nozzle assembly may be provided that applies an adhesive directly to a strand of material in a non-linear pattern.
- the fluid application device 10 may be operated at increased line speeds associated with contact nozzle configurations, while still providing a non-linear pattern of adhesive applied onto the strand.
- a non-linear adhesive pattern may allow for the strand or strands 12 to be bonded to the substrate 14 over a larger rotational range of the strands 12 compared to a linear application pattern. That is, with a linear adhesive pattern, the strand or strands 12 must be accurately positioned relative to the substrate so that the linearly applied adhesive contacts the substrate.
- the strand or strands 12 may be rotated, intentionally or unintentionally due to movement of the strand through the device 10, and still provide a sufficient bonding surface between the strand 12 and the substrate 14.
- the non-linear pattern may allow the strand or strands 12 to be bonded to the substrate 14 at points or segments, rather than in a continuous line. This configuration may provide added flexibility, as the strand or strands 12 are allowed to freely stretch and contract along portions between the bonded segments.
- FIG. 6 is a front view of the components of a nozzle assembly 222 according to another embodiment of the present disclosure.
- FIGS. 7A-7F are enlarged plan views of the components of the nozzle assembly 222 of FIG. 6 .
- the first fluid F 1 may be applied to a strand 12 of material from opposed first and second branches 374a, 374b of one or more application conduits 336 at varying pressures. Accordingly, the first fluid F1 may be fluctuated across a width of the strand 12 during application onto the strand 12.
- a second fluid F2 is not used to control application of the first fluid F2 on the strand 12. Rather, the first fluid F1 is discharged from opposing branches 374a, 374b and is fluctuated as result of varying discharge pressures.
- the first conduit 330 may include a first inlet (not shown) at a side of the nozzle assembly 222 facing the adjacent component, such as the adapter 24.
- the first conduit 330 is configured to receive the first fluid F1 from the first fluid supply module 18 via the first inlet (not shown).
- the first conduit 330 includes a first portion 346 that is generally elongated in a width direction.
- the first conduit 330 may further include one or more body feed holes 356 ( FIG. 7B ) aligned with and fluidically connected to first portion 346.
- the first conduit 330 further includes at least one flow-splitting section 342.
- the flow-splitting section 342 may be formed as a generally body-shaped portion having a head 360, first and second arms 362a, 362b and first and second legs 364a, 364b.
- the application conduit 336 includes the first branch 374a and the second branch 374b as noted above.
- the first and second branches 374a, 374b are angled relative to one another so as to form a substantially V-shaped cross-section.
- the first and second branches 374a, 374b are in fluid communication with and converge at the orifice 228, where the first fluid F1 may be applied to the strand 12.
- the first branch 374a and second branch 374b are fluidically connected to the first leg 364a and the second leg 364b, respectively, of the flow-splitting section 342.
- the first branch 374a may receive the first fluid F1 from the first leg 364a and the second branch 374b may receive the first fluid F1 from the second leg 364b.
- three application conduits 336 are provided. However, it is understood that the present disclosure is not limited to the configuration, and the number of application conduits 336 may vary to accommodate a different number of strands 12.
- the nozzle assembly 222 further includes an oscillator conduit 334.
- the oscillator conduit 334 is fluidically connected to the first conduit 330 at the flow-splitting section 342 and is configured to vary a pressure of the first fluid F1 flowing through the flow-splitting section 342, in part, by creating or amplifying a turbulent flow in the first fluid F1.
- the oscillator conduit 334 includes one or more pairs of arm feed holes, each pair of arm feed holes including first and second arm feed holes 366a, 366b and one or more pairs of leg feed holes, each pair of leg feed holes including first and second leg feed holes 368a, 368b.
- the first and second arm feed holes 366a, 366b are aligned with and fluidically connected to the first arm 362a and second arm 362b, respectively, of the flow-splitting section 342.
- the first and second leg feed holes 368a, 368b are aligned with and fluidically connected to the first leg 364a and the second leg 364b, respectively, of the flow-splitting section 342.
- the oscillator conduit 334 further includes one or more pairs of oscillator slots, each pair of oscillator slots including first and second oscillator slots 370a, 370b.
- the first oscillator slot 370a is aligned with and fluidically connected to the first arm feed hole 366a and first leg feed hole 368a.
- the second oscillator slot 370b is aligned with and fluidically connected to the second arm feed hole 366b and the second leg feed hole 368b.
- the first oscillator slot 370a is configured to receive the first fluid F1 from the first leg feed hole 368a and discharge the first fluid F1 through the first arm feed hole 366a.
- the second oscillator slot 370b is configured to receive the first fluid F1 from the second leg feed hole 368b and discharge the first fluid F1 through the second arm feed hole 366b.
- the first fluid F1 may be received in the first portion 346 of the first conduit 330 via the first inlet (not shown).
- the body feed hole 356 is configured to receive the first fluid F1 from the first portion 346 of the first conduit 330.
- the number of body feed holes 356 may vary and is not limited to this example.
- the number of body feed holes 356 may correspond to the number of application conduits 336 and the number of strands of material 12 that may be accommodated by the nozzle assembly 222.
- additional arm feed hole pairs 366a, 366b and leg feed hole pairs 368a, 368b, along with additional oscillator slot pairs 370a, 370b may be provided at the oscillator conduit 334 to correspond to additional flow-splitting sections 342.
- the head 360 of the flow-splitting section 342 is in fluid communication with the body hole 356 and is configured to receive the first fluid F1 from the body feed hole 356.
- the first fluid F1 may flow from the head 360 to the first and second legs 364a, 364b.
- the first and second branches 374a, 374b of the application conduit 336 are configured to receive the first fluid F1 from the respective first and second legs 364a, 364b of the flow-splitting section 342.
- the first conduit 330 may include three flow-splitting sections 342. It is understood, however, that this example is non-limiting, and that the number of flow-splitting sections 342 may vary.
- the number of flow-splitting sections 342 may correspond to the number of body feed holes 356, such that each body feed hole 356 is in fluid communication with a head 360 of a respective flow-splitting section 342.
- a turbulent flow of the first fluid F1 in the first conduit 330 may be received at the first and second legs 364a, 364b from the head 360 at the flow-splitting section 342 at different pressures.
- at least a portion of the fluid at the higher pressure flows into the oscillator conduit 334, while fluid at the lower pressure flows to a corresponding first branch 374a or to a second branch 374b of the application conduit 336.
- the first fluid F1 may be initially received in the first leg 364a at a higher pressure, and in the second leg 364b at a lower pressure relative to the first leg 364a.
- the first fluid F1 received in the first leg 364a, at the higher pressure may be at least partially discharged to the first leg feed hole 368a of the oscillator conduit 334 and then into the first oscillator slot 370a.
- the first fluid F1 may then flow through the first oscillator slot 370a and be discharged through the first arm feed hole 366a of the oscillator conduit 334.
- This portion of first fluid F1 may then be received in the first arm 362a of the flow-splitting section 342.
- Another portion of the higher pressure first fluid F1 initially received in the first leg 364a is discharged to the first branch 374a of the application conduit 336.
- first fluid F1 initially received in the second leg 364b may be discharged from the second leg 364b and received in the second branch 374b of the application conduit 336.
- the first fluid F 1 received at the first arm 362a from the oscillator conduit 334, at a higher pressure, may then flow into the second leg 364b of the flow-splitting section 342 due to the initial lower pressure of the first fluid F1 in the second leg 364b.
- first fluid F1 may be discharged to the second leg feed hole 368b of the oscillator conduit 334 and then into the second oscillator slot 370b.
- the first fluid F 1 may then flow through the second oscillator slot 370b and be discharged through the second arm feed hole 366b of the oscillator conduit 334.
- This portion of first fluid F1 may then be received in the second arm 362b of the flow-splitting section 342.
- Another portion of the higher pressure first fluid F1 received in the second leg 364b is discharged to the second branch 374b of the application conduit 336.
- first fluid F1 in the first leg 364a now at the lower pressure, may be discharged from the first leg 364a to the first branch 374a of the application conduit 336.
- the first fluid F 1 may be supplied to the first branch 374a and the second branch 374b at alternating higher and lower relative pressures.
- the varying pressures of the first fluid F1 supplied to the first and second branches 374a, 374b causes the first fluid F1 to be discharged to the orifice 228 at different pressures, thereby causing the first fluid F1 to be fluctuated back and forth across a width of the strand 12.
- this configuration causes a lateral fluctuation in first fluid F1 as it is applied onto the strand 12, such that the first fluid F 1 is applied in an irregular, non-predetermined, and/or non-repeatable pattern.
- the nozzle assembly 222 may include a depending guide section 232 having guide slots 234 similar to the guide slots 34 described in the embodiments above.
- the nozzle assembly 222 may include three guide slots 234, each configured to receive a strand of material 12.
- Each guide slot 234 may include an open end 236 and a closed end 238.
- the closed end 238 may act as a stop to position the strand 12 relative to the orifice 28.
- the open end 236 of each guide slot 234 may include a portion shaped generally as an inverted "v" to assist in guiding the strand 12 into the guide slot 234.
- the nozzle assembly 222 may also include securing openings 76 and fastening holes 80 as described in the embodiments above and shown in FIGS. 1-5 .
- the nozzle assembly 22 may include two securing openings 76 and three fastening holes 80.
- the securing openings 76 are configured to receive securing elements 74
- the fastening holes 80 are configured to receive fasteners 82.
- the nozzle assembly 222 may be formed from a plurality of laminated or stacked plates 322a-f secured together by the fasteners 82, and in some embodiments, at least in part by the securing elements 74 as well.
- the securing openings 76 and fastening holes 80 may extend through each plate.
- the nozzle assembly 222 may be formed by six plates, including a first plate 322a, a second plate 322b, a third plate 322c, a fourth plate 322d, a fifth plate 322e and a sixth plate 322f. It is understood that a different number of plates may be implemented in the nozzle assembly 222 so long as the general concepts described above are preserved.
- the first plate 322a may include the first portion 346 of the first conduit 330, securing openings 76 and fastening holes 80. Similar to the guide slots 34 described in the embodiments above, each guide slot 234 may be formed by, for example, a first guide slot segment 234a, a second guide slot segment 234b ( FIG. 7B ) and a third guide slot segment 234c ( FIG. 7C ) formed in adjacent plates and aligned so as to receive the strand of material. The first guide slot segments 234a may be formed in the first plate 322a.
- the second plate 322b may include body feed holes 356, application conduits 336, securing openings 76 and fastening holes 80.
- the second plate 322b may also include second guide slot segments 34b and orifices 28.
- the third plate 322c may include flow-splitting sections 342, third guide slot segments 34c, securing openings 76 and fastening holes 80.
- the orifices 28 may be defined in the second plate 322b between the first plate 322a and third plate 322c.
- the depending guide section 232 may be formed on the first plate 322a, second plate 322b and third plate 322c.
- the aligned first, second and third guide slot segments 234a-c my form a single guide slot 234, and three guide slots 234 may be formed across a width of the nozzle assembly 222.
- the third plate 322c may include three flow-splitting sections 342. However, it is understood that the number of guide slots 234 and flow-splitting sections is not limited thereto.
- the fourth plate 322d may include the first and second arm feed holes 366a, 366b and the first and second leg feed holes 368a, 368b of the oscillator conduit 334.
- the fourth plate 322d may also include securing openings 76 and fastening holes 80.
- the fourth plate 322d may include three pairs of first and second arm feed holes 366a, 366b, and three pairs of first and second leg feed holes 368a, 368b.
- the present disclosure is not limited thereto.
- the fifth plate 322e may include first and second oscillator slots 370a, 370b of the oscillator conduit 334.
- the fifth plate 322e may include securing openings 76 and fastening holes 80.
- the fifth plate 322e may include three pairs of first and second oscillator slots 370a, 370b, but the present disclosure is not limited thereto.
- the sixth plate 322f may include securing openings 76 and fastening holes 80.
- the sixth plate 322f may seal the oscillator conduit 334 at the first and second oscillator slots 370a, 370b.
- FIG. 8 is a front view of the components of a nozzle assembly 422 according to another embodiment disclosed herein.
- FIGS. 9A and 9B are enlarged views of some of the nozzle components of the nozzle assembly 422 shown in FIG. 8 .
- the nozzle assembly 422 may be a laminated plate nozzle comprising a plurality of laminated plates configured to be secured together to allow for fluid flow therein.
- the nozzle assembly 422 includes a first conduit 430 configured to receive the first fluid F1 and allow for flow of the first fluid F 1 within the nozzle assembly 422, a second conduit 432 configured to receive the second fluid F2 and allow for flow of the second fluid F2 within the nozzle assembly 422, and an application conduit 436 fluidically connected to the first conduit 430 and the second conduit 432 such that the application conduit 436 is configured to receive the first fluid F1 and the second fluid F2.
- the first conduit 430 includes a first inlet 438 configured to receive the first fluid F1 from the first fluid supply module 18.
- the first conduit 430 also includes a flow-distributing channel 431.
- the flow-distributing channel 431 is configured to receive the first fluid F1 from the first conduit and distribute the first fluid F1 in a lateral direction relative to the first inlet 438 within the nozzle assembly 422, i.e., across a width direction of the nozzle assembly 422.
- the flow-distributing channel 431 is shaped so as to have a component extending laterally outward relative to the first inlet 438.
- the flow-distributing channel 431 may be substantially triangular in shape.
- the flow-distributing channel 431 may also include an internally disposed flow control finger 433 configured to direct the first fluid F1 toward an outer periphery within the flow-distributing channel 431.
- the second conduit 432 includes a second inlet 440 configured to receive the second fluid F2 from the second fluid supply module 20.
- the second conduit 432 includes one or more flow splitting sections 442 where the second conduit 432 is split into a plurality of discrete flow paths for the second fluid F2 to deliver the second fluid F2 to the one or more application conduits 436.
- each flow splitting section 442 may include first and second branch feed holes 444a, 444b disposed in fluid communication with the application conduit 436.
- Each flow spitting section 442 may correspond to a respective application conduit 436.
- the second conduit 432 includes a first portion 446, a second portion 448 and a reservoir or intermediate portion 450 spacing apart and fluidically connecting the first portion 446 and the second portion 448.
- the first portion 446 extends between the second inlet 440 and the intermediate portion 450 and the second portion 448 extends between the intermediate portion 450 and the one or more application conduits 436.
- the intermediate portion 450 may include one or more pairs of first and second feed slots 444c, 444d.
- first and second branch feed holes 444a, 444b are disposed in direct fluid communication with the application conduit 436, and the first second feed slots 444c, 444d are disposed upstream from, and in fluid communication with the first and second branch feed holes 444a, 444b, respectively. It is understood that although the first and second branch feed holes 444a, 444b and the first and second feed slots 444c, 444d are described and shown as pairs, that the number of feed branch feed holes and slots may vary depending on a desired amount of discrete flow paths extending to each application conduit 436.
- the second portion 448 extends between the intermediate portion 450 and the application conduit 436.
- the first portion 446 and second portion 448 are configured to direct the second fluid F2 in directions that are generally opposite to one another.
- the intermediate portion 450 extends generally perpendicularly between the first portion 446 and the second portion 448, but is not limited to this configuration.
- the flow splitting section or sections 442 may be formed in the second portion 448 of the second conduit 432.
- the application conduit 436 includes a first fluid receiving section 472 configured to receive the first fluid F1 from the first conduit 430, a first branch 474a and a second branch 474b configured to receive the second fluid F2 from the second conduit 432, and in one embodiment from respective first and second feed holes 444a, 444b, and an orifice 428 for discharging the first fluid F1.
- the first fluid F1 is received in the first conduit 430 at the first inlet 438.
- the first fluid F1 may then flow to the flow-distributing channel 431, where the first fluid may be directed laterally, or across a portion of the nozzle's width, relative to the inlet 438 within the nozzle 422 according to a shape of the flow-distributing channel 431 and the flow control finger 433.
- the flow-distributing channel 431 has a width that generally corresponds to a width across which the application conduits 436 are disposed. That is, in one embodiment, the width of the flow-distributing channel 431 is sufficient to dispose each application conduit 436 of a plurality of application conduits in fluid communication with the flow-distributing channel 431.
- the second fluid F2 may be received in the second conduit 432 at the second inlet 440.
- the second fluid F2 may flow in the first portion 446 of the second conduit 432 into the intermediate portion 450.
- the second fluid may also flow into the first and second feed slots 444c, 444d.
- the second fluid may be directed to the second portion 448 of the second conduit 432 and into the one or more flow splitting sections 442.
- the second fluid F2 is directed into the first and second branch feed holes 444a, 444b of each flow splitting section 442.
- the second fluid F2 may then flow into the second portion 448 of the second conduit 432.
- the first branch 474a and the second branch 474b of the application conduit 436 may receive the second fluid F2 from the flow splitting section 442.
- the first fluid F1 may be directed through and out of the orifice 428 from the first fluid receiving section 472, while the second fluid is directed through and out of the orifice 428 from the first and second branches 474a, b. That is, the first and second fluids F1, F2 may be discharged from the orifice 428 simultaneously, substantially simultaneously or in an alternating pattern. Accordingly, the second fluid F2, fed into the orifice 428 at substantially opposing sides of the first fluid F1, may cause the first fluid F1 to vacillate, oscillate, or be otherwise discharged from the orifice in 428 in a non-linear, irregular, and/or substantially non-repeating pattern.
- the nozzle assembly 422 may be a laminated plate nozzle assembly comprising a plurality of laminated plates.
- the nozzle assembly 422 may include a first plate 422a, a second plate 422b, a third plate 422c, a fourth plate 422d, a fifth plate 422e and a sixth plate 422f. It is understood that additional or fewer plates may be used in the nozzle assembly 422, and that the various components of each plate may be present in one or more of the plates.
- the first conduit 430 extends in the first plate 422a and the second plate 422b.
- the first inlet 438 may be formed in the first plate 422a and the flow-distributing channel 431 may be formed in the second plate 422b.
- the second conduit 432 may be formed in the first through fifth plates 422a-e, and the sixth plate 422f may be an end or face plate.
- the first portion 446 of the second conduit 432 extends in the first through four plates 422a-d
- the intermediate portion extends in the fifth plate 422e
- the second portion 448 extends in the fourth plate 422d.
- the second inlet 440 may be in the first plate 422a and the one or more flow splitting sections 442, including the first and second branch feed holes 444a, 444b may be in the fourth plate 422d.
- the one or more application conduits 436 may be disposed in the third plate 422c.
- one or more plates 422a-f may include one or more guide slots 434 configured to receive and guide respective strands of material onto which the first fluid F1 may be deposited.
- the plates 422a-f may also include one or more fastening holes 439 configured to receive a fastener for securing the plates together.
- an oscillator conduit of the type described in the embodiments above with reference to FIGS. 1-7 , may be omitted, yet an oscillating, vacillating or other similar effect may still be achieved when discharging and applying the first fluid F1 onto the strand or strands by way of the embodiments shown in FIGS.
- a flow of the first fluid F1 may be more evenly distributed to the application conduits 436, compared to a nozzle where the first fluid inlet is aligned with one of a plurality of application conduits.
- FIGS. 10A and 10B illustrate another embodiment of the nozzle assembly 422 having differently configured nozzle plates.
- the second and third nozzle plates 422b and 422c may be replaced with second and third nozzle plates 522b ( FIG. 10A ) and 522c ( FIG. 10B ), while the remaining nozzle plates in the nozzle assembly 422 may be the same as those shown in FIG. 8 .
- the flow-distributing channel 531 may be formed having a width sufficient for fluid communication with a predetermined number of application conduits 536.
- the flow-distributing channel 531 may include a first arm 531a, a second arm 531b and a base 531c extending between and connected the first arm 531a to the second arm 531b.
- the first inlet 538 extends from the first plate 422a through the second plate 522b to a flow reversal and divider section 535 in the third plate 522c.
- the flow reversal and divider section 535 is configured to receive the first fluid F1.
- the flow of the first fluid F1 is reversed by way of interaction with the adjacent fourth plate 422d, which functions, in part, as a backing plate.
- the reversed flow of the first fluid F1 is divided between a first leg 535a and a second leg 535b.
- the first and second legs 535a, 535b are disposed in fluid communication with the first and second arms 531a, 531b, respectively. Accordingly, the first fluid F1 may be received in the flow-distributing channel 531 at the first and second arms 531a, 531b, and flow to the base 531c, where the first fluid F1 may then be distributed and flow to the application conduits 536. In particular, the first fluid F1 may be received in the respective first fluid receiving sections of 572 of the application conduits 536. It is understood that description of certain features of this embodiment which are the same as features in the embodiments above may be omitted in the discussion of this embodiment below.
- FIGS. 11A and 11B are enlarged views of the fourth plate 422d and fifth plate 422e, respectively, of the nozzle assembly 422 shown in FIG. 8 .
- the fourth plate 422d may include the first portion 446 of the second conduit 432 and the second portion 448 of the second conduit 432.
- the second portion 448 includes one or more flow splitting sections 442, and each flow splitting section 442 may include first and second branch feed holes 444a, 444b.
- the fifth plate 422e include the intermediate portion 450 of the second conduit 432.
- the intermediate portion 450 may include feed slots disposed in fluid communication the branch feed holes of the one or more flow splitting sections 442.
- the intermediate portion 450 may include first and second feed slots 444c, 444d configured to be aligned and disposed in fluid communication with the first and second branch feed holes 444a, 444b, respectively.
- the second fluid F2 may flow in the nozzle assembly 422 through the first portion 446 of the second conduit 432, to the intermediate portion 450 and the feed slots 444c, 444d, and then to the first and second branch feed holes 444a, 444b of the second portion 448, before being delivered to the first and second branches 474a, 474b and the application conduit 436.
- FIG. 12 is a front view of the components of a nozzle assembly 622 according to another embodiment disclosed herein.
- the nozzle assembly 622 may be configured to discharge only the first fluid F1.
- the nozzle assembly 622 includes, for example, a first conduit 630 having a first inlet 638 and a flow-distributing channel 631.
- the nozzle assembly 622 also includes one or more application conduits 636 configured to receive the first fluid F1 from the first conduit 630, and discharge the first fluid F1 through a corresponding orifice 628. Accordingly, the first fluid F1 may be received in the first conduit 630 through the first inlet 638.
- the first fluid F1 may then flow to the flow-distributing channel 631 where the first fluid F1 may then be distributed at least in a lateral direction of the nozzle assembly 622. Subsequently, the first fluid F1 may be received in the one or more application conduits 636 and discharged from the corresponding orifices 628 for application onto a strand of material.
- the nozzle assembly 622 may also include one or more guide slots 634 for guiding a strand relative to the orifice 628.
- the nozzle assembly 622 may be formed by a plurality of plates secured together in the manner described above.
- the nozzle assembly 622 may include a first plate 622a, a second plate 622b, a third plate 622c and a fourth plate 622d. It is understood, however, that nozzle assembly 622 is not limited to only these first through fourth plates 622a-d.
- the first inlet 638 may be formed in the first plate 622a
- the flow-distributing channel 631 may be formed in the second plate 622b
- the one or more application conduits 636 and corresponding orifices 628 may be formed in the third plate 622c.
- the fourth plate 622d may serve as a backing plate or face plate.
- a second conduit 632 may also be formed in the nozzle assembly 622.
- the fourth plate 622d, or backing plate is configured to block the flow of a second fluid F2 in the second conduit, such that only the first fluid F1 may be discharged.
- FIGS. 13A, 13B, 14A, 14B, 15A and 15B show alternative embodiments of the first conduit, and in particular, the flow-distributing channel, which may be used in the nozzle assembly 422 of FIG. 8 .
- the plates shown in the embodiments of FIGS. 13-15 may replace the second and third plates 422b, 422c of the nozzle assembly 422 shown in FIG. 8 .
- the flow-distributing channel 731 may be formed in a second plate 722b.
- the flow-distributing channel 731 may include an inlet section 731c configured to receive the first fluid from the first inlet 438 (see FIG. 8 ).
- the flow-distributing channel 731 may also include a first arm 731a and a second arm 731b extending from the inlet section 731c.
- each arm 731a, 731b may be angled downwardly relative to a horizontal such that the first and second arms 731a, 731b are arranged at a non 180 degree angle relative to one another.
- Each arm 731a, 731b may be disposed in fluid communication with a respective application conduit 736, formed on the third plate 722c. Accordingly, The first fluid F1 may be received in the first inlet 438, flow into the inlet section 731c, the first arm 731 and the second arm 731b. The first fluid F1 may then flow to respective application conduits 736.
- the inlet 838 may extend from the first plate 422a, through the second plate 822b to the flow reversal and divider section 835 in the third plate 822c.
- the flow reversal and divider section 835 is configured to receive the first fluid F1.
- the flow of the first fluid F1 is reversed by way interacting with the adjacent fourth plate 422d (see FIG. 8 ), which functions, in part, as a backing plate.
- the reversed flow of the first fluid F1 is divided between a first leg 835a and a second leg 835b.
- the first and second legs 835a, 835b are disposed in fluid communication at or near respective ends 831a, 831b of the flow-distributing channel 831 in the second plate 822b. Accordingly, the first fluid F1 may be received in the flow-distributing channel 831 and flow toward a center of the channel 831. The first fluid F1 may then flow back toward the third plate 822c (with the first plate 422a acting as a backing plate to the channel 831) to the one or more application conduits 836 in the third plate 822c.
- the inlet 938 may extend from the first plate 422a, through the second plate 922b to the flow reversal and divider section 935 in the third plate 922c.
- the flow reversal and divider section 935 is configured to receive the first fluid F1.
- the flow of the first fluid F1 is reversed by way interacting with the adjacent fourth plate 422d (see FIG. 8 ), which functions, in part, as a backing plate.
- the reversed flow of the first fluid F1 is divided between a first leg 935a and a second leg 935b.
- the first and second legs 935a, 935b are disposed in fluid communication at or near respective ends 931a, 931b of the flow-distributing channel 931 in the second plate 922b. Accordingly, the first fluid F1 may be received in the flow-distributing channel 931 and flow toward a center of the channel 931. The first fluid F1 may then flow back toward the third plate 922c (with the first plate 422a acting as a backing plate to the channel 931) to the one or more application conduits 936 in the third plate 922c.
- the first fluid F1 may be directly, i.e., contactingly, applied on a strand or strands 12 in a non-linear pattern. Accordingly, the fluid application device 10 may be operated at increased line speeds when compared to non-contact nozzle configurations, while still providing a benefits of a non-linear application pattern detailed above.
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Nozzles (AREA)
Description
- The present invention relates to a nozzle assembly for a fluid application device as defined in the preamble of claim 1, and to a fluid application device as defined in claim 6.
- Such a nozzle and fluid application device is known from
WO 2015/112265 A1 .US 4 680 595 A discloses an ink jet print head comprising a nozzle assembly having a kind of flow reversal and divider section.DE 40 10 262 A1 refers to a nozzle for applying viscous fluids which, however, neither uses a second fluid nor a flow reversal and divider section. - Nonwoven fabrics are engineering fabrics that provide specific functions such as absorbency, liquid repellence, resilience, stretch, softness, strength, flame retardant protection, easy cleaning, cushioning, filtering, use as a bacterial barrier and sterility. In combination with other materials, nonwoven materials can provide a spectrum of products with diverse properties and can be used alone or as components of hygiene apparel, home furnishings, health care, engineering, industrial and consumer goods.
- A plurality of elasticated strands may be positioned on and bonded to the nonwoven materials to, for example, allow for flexibility fitting around an object or a person. The strands may be bonded to the nonwoven fabric with an adhesive, such as glue. In one configuration, the strands are fed past a nozzle on an adhesive application device. The nozzle may include a plurality of outlets through which the glue may be discharged. A second fluid, such as air, may be discharged through separate outlets to control the application of the glue such that the glue is oscillated across the respective strands as the strands pass by the nozzle. In such a configuration, the glue may be discharged as a fiber, and the fiber is oscillated by the air.
- An adhesive application device may apply the glue to the strands with either a contact nozzle or a non-contact nozzle. A contact nozzle discharges a volume of substantially stationary glue while a substrate, such as the strand, is fed by the glue. The strand is in contact with the glue and the glue adheres to the strand as a result of the contact. In a non-contact nozzle, the glue may be discharged from an outlet as a fiber. The glue fiber is discharged over a gap between the outlet and the strand, and is ultimately received on the strand. Discharging of the glue fiber may be controlled by a second fluid, such as air, discharged from adjacent outlets, to oscillate the glue fiber during application onto the strand.
- A non-contact nozzle may be beneficial for applying the glue fiber on the strand in a desired pattern, for example, in a substantially sinusoidal pattern. However, a line speed, i.e., a speed at which the strand is fed past the nozzle, typically cannot exceed about 400 meters per minute (mpm) to achieve the desired pattern using a non-contact nozzle. A higher line speed may be achieved with a contact nozzle. However, a contact nozzle is limited to applying the glue onto the strand in a substantially linear pattern.
- Accordingly, it is desirable to provide a fluid application device having a contact nozzle configured to apply the fluid onto the strand in a non-linear pattern such that the fluid may be applied over a wider area of the strands.
- According to the present invention, a nozzle assembly as defined in claim 1 is provided as well as a fluid application device as defined in claim 6.
- Other objects, features, and advantages of the disclosure will be apparent from the following description, taken in conj unction with the accompanying sheets of drawings, wherein like numerals refer to like parts, elements, components, steps, and processes.
-
Figs. 10A, 10B ,14A, 14B, 15A and 15B show the claimed invention, whereas the other Figures show embodiments which are useful for the understanding of the invention. -
FIG. 1 is a perspective view of a fluid application device having a contact nozzle assembly according to an embodiment described herein; -
FIG. 2 is a front perspective view of the fluid application device ofFIG. 1 ; -
FIG. 3 is a plan view of contact nozzle components according to an embodiment described herein; -
FIGS. 4A-4H are enlarged views of the nozzle components ofFIG. 3 ; -
FIG. 5 is an exploded perspective view of the contact nozzle components ofFIG. 3 ; -
FIG. 6 is a plan view of the contact nozzle components according to another embodiment described herein; -
FIGS. 7A-7F are enlarged views of the nozzle components ofFIG. 6 ; -
FIG. 8 is a plan view of contact nozzle components according to another embodiment described herein; -
FIGS. 9A and 9B are enlarged views of some of the nozzle components ofFIG. 8 ; -
FIGS. 10A and 10B are enlarged views of another embodiment the nozzle components inFIGS. 9A and 9B according to the claimed invention; -
FIGS. 11A and 11B are enlarged view of some of the nozzle components ofFIG. 8 ; -
FIG. 12 is a plan view of contact nozzle components according to another embodiment; -
FIGS. 13A and 13B are enlarged views of another embodiment the nozzle components inFIGS. 9A and 9B ; -
FIGS. 14A an 14B are enlarged views of another embodiment the nozzle components inFIGS. 9A and 9B according to the claimed invention; and -
FIGS. 15A and 15B are enlarged views of another embodiment the nozzle components inFIGS. 9A and 9B according to the claimed invention. - While the present disclosure is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described one or more embodiments with the understanding that the present disclosure is to be considered illustrative only and is not intended to limit the disclosure to any specific embodiment described or illustrated.
-
FIG. 1 is a side perspective view of afluid application device 10 according to an embodiment described herein. Thefluid application device 10 may be used to apply a first fluid onto an article. For example, thefluid application device 10 may apply a first fluid onto an article. The first fluid may be a viscous fluid that is a liquefied material heated or non-heated between about 10 and 50,000 centipoise (cps). The first fluid may be, for example, an adhesive, and the article may be, for example, an elastic ornon-elastic strand 12 of material. That is, in one embodiment, thefluid application device 10 is part of a strand coating system. The adhesive may be applied to thestrand 12 so that thestrand 12 may be adhered to asubstrate 14, such as a nonwoven material. Thestrand 12, in one embodiment, may be made from an elastic material and may be in either a stretched condition or a relaxed condition as the first fluid is applied. Thestrand 12 of material may be, for example, spandex, rubber or other similar elastic material. - According to one embodiment, the
fluid application device 10 includes anapplicator head 16. Theapplicator head 16 may include a firstfluid supply unit 18 and a secondfluid supply unit 20. Thefluid application device 10 also includes anozzle assembly 22 fluidically coupled to theapplicator head 16. The firstfluid supply unit 18 is configured to receive the first fluid Fl from a first fluid source (not shown) and the secondfluid supply unit 20 is configured to receive a second fluid F2 from a second fluid source (not shown). Thenozzle assembly 22 is fluidically coupled to, i.e., is in fluid communication with, the firstfluid supply unit 18. Thenozzle assembly 22 may also be fluidically coupled to, i.e., may be in fluid communication with, the secondfluid supply unit 20. Accordingly, thenozzle assembly 22 may receive the first fluid F1 from the firstfluid supply unit 18 and the second fluid F2 from the secondfluid supply unit 20. - In some embodiments, the
applicator head 16 may also include anadapter 24 secured to at least one of the firstfluid supply unit 18 and secondfluid supply unit 20. Theadapter 24 is positioned adjacent to thenozzle assembly 22 and is fluidically coupled to, i.e., is in fluid communication with, thenozzle assembly 22. In addition, theadapter 24 is fluidically coupled to one of or both of the firstfluid supply unit 18 and secondfluid supply unit 20, such that thenozzle assembly 22 may receive the first fluid and the second fluid via theadapter 24. That is, theadapter 24 is in fluid communication with at least one of the firstfluid supply unit 18 and the secondfluid supply unit 20 and also thenozzle assembly 22. Theadapter 24 is configured to have thenozzle assembly 22 secured thereto such that thenozzle assembly 22 may be properly positioned and oriented relative theapplicator head 16 and/or a path along which thestrands 12 travel. - The
applicator head 16 may also include aflow control module 26. Theflow control module 26 may include a valve or series of valves to regulate a flow of the first fluid and second fluid from the firstfluid supply unit 18 and secondfluid supply unit 20, respectively, to thenozzle assembly 22. Theflow control module 26 and theadapter 24 may be integrated such that theadapter 24 and theflow control module 26 are one and the same. That is, in some embodiments, theadapter 24 andflow control module 26 are implemented as the same unit. This unit provides an adhesive path between one of or both of the first and secondfluid supply units nozzle assembly 22. This unit, i.e., the combinedadapter 24 andflow control module 26 may also include valving to start and stop the flow of adhesive. -
FIG. 2 is a front perspective view of thefluid application device 10 according to an exemplary embodiment. With reference toFIGS. 1 and2 , thenozzle assembly 22 may be removably secured to theadapter 24 or other adjacent component of theapplicator head 16. Thenozzle assembly 22 may be acontact nozzle assembly 22. Thenozzle assembly 22 includes anorifice 28, through which the first fluid F1 (seeFIG. 4 ) may be applied directly on thestrand 12. There may be at least oneorifice 28 associated with eachstrand 12 of material. In some embodiments, there is oneorifice 28 associated with eachstrand 12. That is, eachorifice 28 may discharge the first fluid directly to arespective strand 12. Eachorifice 28 may have a width of approximately 0.016-0.020 inches (0.406-0.508 mm), but is not limited thereto. For example, the width of theorifices 28 may be varied to accommodate different sizes ofstrands 12. In addition, in an embodiment of the present contact nozzle assembly, the second fluid F2 (seeFIG. 4 ) may also be discharged adjacent to or at theorifice 28 as described further below. The second fluid F2 may be used to control the application of the first fluid on thestrand 12, for example, by moving the first fluid F1 back and forth across a width of, or at least partially around an outer circumference of, thestrand 12 as the first fluid F1 is applied. - As noted above, the first fluid F1 may be an adhesive, such as a hot melt adhesive. The adhesive may be discharged from the
orifice 28, for example, as a bead that is contacted directly by thestrand 12. Theapplicator head 16 may be heated to either melt the first fluid or maintain the first fluid F 1 in a melted condition. For example, the firstfluid supply unit 18, the secondfluid supply unit 20, and/or thenozzle assembly 22 may be heated, and thus, may also radiate heat outwardly. Theapplicator head 16 may also include a heater. - The second fluid F2 may be, for example, air, and may be used to control the discharge of the first fluid F1 at the
orifice 28 of thenozzle assembly 22 and onto thestrand 12 as described above. In a non-limiting example, there are twobranches FIGS. 3 and4 ) configured to discharge the second fluid F2 adjacent to eachorifice 28 that discharges the first fluid F1 as described further below. It is understood, however, that the number ofbranches orifice 28 may vary. The second fluid may be alternately discharged from the outlets adjacent to eachorifice 28 to cause the first fluid F1 to fluctuate and during application to thestrand 12. - The
fluid application device 10 further includes astrand engagement device 30. Thestrand engagement device 30 may be formed integrally with theapplicator head 16. Alternatively, thestrand engagement device 30 may be secured to theapplicator head 16 or other component of thefluid application device 10 with a suitable fastener, including, but not limited to, bolts, screws, rivets, adhesives, welds and the like. Thestrand engagement device 30 is configured to engage thestrands 12 and move thestrands 12 toward or away from theapplicator head 16 andnozzle assembly 22 based on a line condition (active or static) of thefluid application device 10, as described further below. - Referring to
FIGS. 1 and2 , thecontact nozzle assembly 22 further includes a dependingguide section 32 to assist in positioning of thestrands 12 relative to theorifices 28 andbranches FIGS. 3 and4 ) of thenozzle assembly 22. Theguide section 32 also includes at least oneguide slot 34 through which thestrand 12 may be fed. Theguide slot 34 includes anopen end 36 and aclosed end 38. In one embodiment, theclosed end 38 is positioned immediately adjacent to theorifice 28. Theopen end 36 may be formed in a substantially inverted v-shape, while theclosed end 38 may be rounded or curved so that it substantially matches a profile of thestrand 12. Theguide slot 34 may have a substantially constant width between theopen end 36 andclosed end 38. Theclosed end 38 may act as a limit or stop for thestrands 12 to position thestrands 12 at the desired position relative theorifices 28 andbranches FIGS. 3 and4 ) for application of the first fluid F1. In one embodiment, thestrand 12 contacts theclosed end 38. Alternatively, thestrand 12 may be spaced from, but in close proximity to theclosed end 38. - According to one embodiment, the at least one
guide slot 34 may include threeguide slots 34. However, it is understood that the number ofguide slots 34 may vary, and is not limited to the example above. Eachguide slot 34 is associated with acorresponding orifice 28 of thenozzle assembly 22. That is, eachguide slot 34 is substantially aligned with acorresponding orifice 28 of thenozzle assembly 22. For example, theclosed end 38 ofrespective guide slots 34 may be aligned withrespective orifices 28. - With further reference to
FIGS. 1 and2 , thestrand engagement device 30 includes anengagement arm 44 configured to support and/or guide the strand orstrands 12. Theengagement arm 44 is adjustable to move thestrands 12 within, or relative to,respective guide slots 34 to position thestrands 12 relative to therespective orifices 28 and outlets. -
FIG. 2 shows theengagement arm 44 in a first position. Theengagement arm 44 is adjustable between a first position, as shown inFIG. 2 , and a second position (not shown). The first position corresponds to a position where theengagement arm 44 is spaced a first distance from theapplicator head 16. The first distance is sufficient to prevent or limit damage, such as burn through, to thestrands 12 caused from heat radiating from theapplicator head 16 and/ornozzle assembly 22. For example, theengagement arm 44, in the first position may space thestrands 12 approximately 3-5 mm from a heat source of theapplicator head 16. It may be desirable to maintain theengagement arm 44 in the first position when the fluid application device is in a static line condition, i.e., when thestrands 12 are not being fed pastrespective orifices 28. - The second position (not shown) corresponds to a position where the
engagement arm 44 is spaced a second distance, less than the first distance, from theapplicator head 16, such that thestrands 12 are moved closer to theapplicator head 16 and therespective orifices 28. In one example, the second position of theengagement arm 44 positions the strands approximately at or partially within theorifices 28. That is, the second position of theengagement arm 44 generally corresponds to a position where the first fluid F 1 may be applied directly on thestrand 12. Moving theengagement arm 44 to, and maintaining the engagement arm in, the second position may be beneficial when thefluid application device 10 is in an active line condition, i.e., when thestrands 12 are being fed pastrespective orifices 28, so that the first fluid F 1 may be efficiently applied on thestrands 12 and overspray may be reduced. - Referring still to
FIGS. 1 and2 , theengagement arm 44 may be adjusted by an actuatingassembly 48. The actuatingassembly 48 may be, for example, a pneumatically controlledpiston 50 andcylinder 52. For example, thepiston 50 may be movable within thecylinder 52 in response to air or another gas being introduced into thecylinder 52. Thepiston 50 may be connected directly or indirectly to theengagement arm 44 such that movement of thepiston 50 in and out of thecylinder 52 causes theengagement arm 44 to move toward or away from theapplicator head 16. - Referring still to
FIGS. 1 and2 , thenozzle assembly 22 may be formed as a modular unit. That is, thenozzle assembly 22 may be selectively removed from and secured to thefluid application device 10. For example, thenozzle assembly 22 may be selectively removed from and secured to theapplicator head 16, and more specifically, in some embodiments, theadapter 24. Accordingly, thenozzle assembly 22 may be replaced in the event a new or different nozzle assembly is desired or required. Thenozzle assembly 22 is selectively removable from and securable to thefluid application device 10 by way of at least one securing element 74 (FIG. 2 ). In one embodiment, thenozzle assembly 22 includes at least one securingopening 76 extending therethrough, each securingopening 76 configured to receive arespective securing element 74. - With further reference to
FIGS. 1 and2 , thenozzle assembly 22 may include two securingopenings 76, each configured to receive arespective securing element 74. It is understood that the number of securingopenings 76 is not limited to the example above, however. Individual securingopenings 76 may be formed as an opening or slot extending through thenozzle assembly 22. The opening or slot may be closed about its periphery or include an open side along an edge of thenozzle assembly 22. The securingelements 74 extend through the securingopenings 76 and are received in corresponding bores (not shown) in thefluid application device 10 to secure thenozzle assembly 22 to theapplicator head 16. This allows for a modular design of thefluid application device 10 andnozzle assembly 22 to facilitate maintenance, replacement or the like. -
FIG. 3 is a plan view of contact nozzle assembly components according to an embodiment described. With reference toFIG. 3 , thenozzle assembly 22 may be formed by a plurality of laminated or stackedplates 122a-h. In the example shown inFIG. 3 , the nozzle assembly includesfirst plate 122a,second plate 122b,third plate 122c,fourth plate 122d,fifth plate 122e,sixth plate 122f,seventh plate 122g andeighth plate 122h. It is understood, however, that the number of plates 122 in thenozzle assembly 22 may vary and is not limited to the example shown inFIG. 3 .FIGS. 4A-4H are enlarged views of the first through eighth plates, 122a-122h, respectively, shown inFIG. 3 . - Referring to
FIGS. 3 ,4B ,4E and 4F , in one embodiment thenozzle assembly 22 includes a fluidic oscillator configured to control application of the first fluid F1 onto thestrand 12 such that the first fluid F1 may be applied in a non-linear pattern. For example, the fluidic oscillator may discharge a second fluid F2 at opposite sides of theorifice 28, via first andsecond branches strand 12. - Referring to
FIGS. 3 and4A-4H , in one example, thenozzle assembly 22 includes afirst conduit 130 in which the first fluid F1 may flow. The fluidic oscillator of thenozzle assembly 22 may be formed by asecond conduit 132 within thenozzle assembly 22, anoscillator conduit 134 in fluid communication with thesecond conduit 132, and anapplication conduit 136, fluidically connected to thefirst conduit 130 andsecond conduit 132. - The
first conduit 130 is configured to a deliver the first fluid F1 to theapplication conduit 136. Thefirst conduit 130 includes afirst inlet 138 configured to receive the first fluid F 1 from the firstfluid supply module 18. It is understood that theinlet 138 may be formed in a side of plate of thenozzle assembly 22 facing toward the applicator, i.e., away from remaining plates of the nozzle assembly, such that the first fluid F 1 may be received in thefirst conduit 130. For example, thefirst inlet 138 may be formed on a side of the first plate configured to abut theapplicator head 16, or other adjacent component, from which the first fluid is discharged. In one embodiment, thefirst conduit 130 may be generally triangular in cross-section, with rounded corners. Thefirst conduit 130 may also include a width and height. In one example, the width is greater than the height. However, it is understood that these configurations are described for purposes of example only, and the present disclosure is not limited thereto. For example, the first conduit may be formed in different suitable cross-sectional shapes and have varying relative dimensions of width and height. - The
second conduit 132 is formed in thenozzle assembly 22 and is configured to deliver the second fluid F2 to theapplication conduit 136. Thesecond conduit 132 includes asecond inlet 140 configured to receive the second fluid F2 from the secondfluid supply module 20. It is understood that thesecond inlet 140 may be formed in a plate of thenozzle assembly 22, for example,first plate 122a, so that the second fluid F2 is received in thesecond conduit 132 from thesecond inlet 140. - Referring to
FIG. 3 , andFIGS. 4A-4F , in one embodiment, thesecond conduit 132 may include one or more flow-splitting sections 142 (FIGS. 4C and 4D ), as described further below, where thesecond conduit 132 may be split so as to deliver the second fluid F2 to first andsecond branches application conduit 136. In one embodiment, the flow-splittingsection 142 may include a firstbranch feed hole 144a and a secondbranch feed hole 144b (FIG. 4C ). The firstbranch feed hole 144a and secondbranch feed hole 144b may be in direct fluid communication with theapplication conduit 136 so as to supply the second fluid F2 to the application conduit 136 (FIG. 4B ). - With further reference to the examples in
FIGS. 3 and4A-4F , thesecond conduit 132 may include a first portion 146 (FIGS. 4B-4E ), a second portion 148 (FIGS. 4C-4E ) and a reservoir 150 (FIG. 4F ) spacing apart and fluidically connecting thefirst portion 146 and thesecond portion 148. Thefirst portion 146 extends between thesecond inlet 140 and thereservoir 150 generally in a first direction D1 (FIG. 5 ). In one embodiment, thefirst portion 146 may be formed as an elongated opening, having a generally inverted "v," or "u," shape in cross-section. However, other angled or curved elongated shapes, or non-angled or non-curved shapes that do not interfere with fastening openings 80 (described further below) may be suitable as well. - The
second portion 148 extends between thereservoir 150 and theapplication conduit 136 generally in a second direction D2 (FIG. 5 ). In one embodiment, the first direction D1 and second direction D2 are generally opposite to one another. In one example, thereservoir 150 extends generally perpendicularly between thefirst portion 146 and thesecond portion 148, but is not limited to this configuration. - It is understood that the terminology "generally in a first direction D1" refers to the direction from the
second inlet 140 to thereservoir 150, and may include variations in the direction as a result of the specific geometry and configuration of thefirst portion 146. Similarly, it is understood that the terminology "generally in a second direction D2" refers to the direction from thereservoir 150 toapplication conduit 136, and may include variations in the direction as a result of the specific geometry and configuration of thesecond portion 148. - The
reservoir 150 is configured to receive the second fluid F2, flowing in the first direction D 1, from thefirst portion 146 of thesecond conduit 132. In one non-limiting embodiment, for example, as shown inFIGS. 3 and4F , thereservoir 150 may be formed substantially in a U-shape. Thereservoir 150 may include first and second receivinglegs 152a, 152b configured to receive the second fluid F2 from thefirst portion 146 of thesecond conduit 132. Thereservoir 150 may further include a cross-leg 154 fluidically connected to the first and second receivinglegs 152a, 152b and configured to receive the second fluid F2 from the first and second receivinglegs 152a, 152b. In this example, the cross-leg 154 is fluidically connected to thesecond portion 148 of thesecond conduit 132 and is configured to deliver the second fluid F2 to thesecond portion 148 such that the second fluid F2 may flow in the second direction D2 to theapplication conduit 136. It is understood that various other shapes and configurations for thereservoir 150 are envisioned that allow for the second fluid F2 to flow from thefirst portion 146 to thesecond portion 148 of thesecond conduit 132. - The
second portion 148 of thesecond conduit 132 may include one or more body feed holes 156 fluidically connected to thereservoir 150 and configured to receive the second fluid F2 from thereservoir 150. In the example shown inFIGS. 3 and4E , thebody feed hole 156 is configured to receive the second fluid F2 from the cross-leg 154 of thereservoir 150. Thebody feed hole 156 is fluidically connected to the flow-splittingsection 142. - Referring to
FIGS. 3 and4D , in one embodiment, the flow-splittingsection 142 may include a generally body-shaped portion. The body-shaped portion may include ahead 160, first andsecond arms second legs head 160 of the flow-splittingsection 142 is fluidically connected to thebody feed hole 156 and is configured to receive the second fluid F2 therefrom. The second fluid F2, received in thehead 160 of the flow-splittingsection 142 may then to the first andsecond arms second legs section 142. - As noted above, the flow-splitting
section 142 is configured to split the flow of the second fluid F2. Referring to the non-limiting example shown inFIGS. 3 ,4C and 4D , thefirst leg 164a (FIG. 4D ) of the flow-splittingsection 142 may be aligned with and fluidically connected to the firstbranch feed hole 144a (FIG. 4C ) and thesecond leg 164b (FIG. 4D ) of the flow-splittingsection 142 may be aligned with and fluidically connected to the secondbranch feed hole 144b (FIG. 4C ). Accordingly, the first and secondbranch feed holes second legs section 142. The first and secondbranch feed holes application conduit 136 and are configured to deliver the second fluid F2 to theapplication conduit 136 as described further below. - With reference to
FIGS. 3 ,4E and 4F , theoscillator conduit 134 may be formed in thenozzle assembly 22. In the example shown inFIG. 3 , theoscillator conduit 134 is fluidically connected to thesecond conduit 132, for example, at the flow-splittingsection 142 and is configured to vary a pressure of the second fluid F2 flowing through the flow-splittingsection 142, in part, by creating or amplifying a turbulent flow in the second fluid F2. - In one embodiment, the
oscillator conduit 134 includes one or more pairs of arm feed holes, each pair of arm feed holes including first and secondarm feed holes leg feed holes arm feed holes first arm 162a andsecond arm 162b, respectively, of the flow-splittingsection 142. Likewise, the first and secondleg feed holes first leg 164a andsecond leg 164b, respectively, of the flow-splittingsection 142. Theoscillator conduit 134 further includes one or more pairs of oscillator slots, each pair including first andsecond oscillator slots first oscillator slot 170a is aligned with and fluidically connected to the firstarm feed hole 166a and the firstleg feed hole 168a. Likewise, thesecond oscillator slot 170b is aligned with and fluidically connected to the secondarm feed hole 166b and the secondleg feed hole 168b. Accordingly, thefirst oscillator slot 170a is configured to receive the second fluid F2 from the firstleg feed hole 168a and discharge the second fluid F2 through the firstarm feed hole 168b. Similarly, thesecond oscillator slot 170b is configured to receive the second fluid F2 from the secondleg feed hole 168b and discharge the second fluid F2 through the secondarm feed hole 166b. - Referring still to the example in
FIG. 3 , and with further reference toFIG. 4B , theapplication conduit 136 includes areceptacle 172, thefirst branch 174a and thesecond branch 174b. Thereceptacle 172 is fluidically connected to thefirst conduit 130, and thus, is configured to receive the first fluid F1 from thefirst conduit 130. Thefirst branch 174a and thesecond branch 174b are aligned with and fluidically connected to the firstbranch feed hole 144a and secondbranch feed hole 144b, respectively. Accordingly, thefirst branch 174a and thesecond branch 174b are configured to receive the second fluid F2 from the firstbranch feed hole 144a and secondbranch feed hole 144b, respectively. Thereceptacle 172, thefirst branch 174a and thesecond branch 174b are fluidically connected to theorifice 28. - In the examples above, the
second portion 148 of thesecond conduit 132, theoscillator conduit 134, and theapplication conduit 136 define a flow path for the second fluid F2 between thereservoir 150 and theorifice 28. It is understood that multiple flow paths may be provided in thenozzle assembly 22 to control the application of the first fluid F1 onto additional strands ofmaterial 12. For example, as shown inFIGS. 3 and4A-4F , the fluidic oscillator includes three flow-splittingsections 142, each flow-splittingsection 142 having a body-shaped portion, firstbranch feed hole 144a and second branch feed hole 142b, and three body feed holes 156, formed in thesecond portion 148 of thesecond conduit 132. Similarly, theoscillator conduit 134 may include three pairs ofarm feed holes leg feed holes oscillator slots FIG. 4B , for example, may include three application conduits136. Accordingly, the first fluid F1 may be applied on three strands via threerespective application conduits 136. In this example, thefirst conduit 130 may be fluidically connected to eachapplication conduit 136, and thus, may supply the first fluid F1 to respective receptacles of theapplication conduits 136. In addition, thefirst portion 146 of the of thesecond conduit 132 may supply the second fluid F2 to thereservoir 150, and in turn, to thesecond portion 148 of thesecond conduit 132, theoscillator conduits 134 and theapplication conduits 136. - It is understood that the configurations shown in
FIGS. 3 and4A-4F are non-limiting, and that the number of flow-splittingsections 142, including the body-shaped portions, firstbranch feed holes 144a, and second branch feed holes 144b, body feed holes 156, armfeed hole pairs feed hole pairs oscillator slot pairs application conduits 136 may vary depending on the number of strands ofmaterial 12 thenozzle assembly 22 is configured to accommodate. Thenozzle assembly 22 may be configured to accommodate, for example, anywhere from one strand to ten strands, but is not limited to this range. - As noted above, and with further reference to
FIGS. 3 and4A-4H , thenozzle assembly 22 may be formed by a plurality of laminated or stacked plates. In one embodiment, thenozzle assembly 22 is formed by eightplates 122a-h. Thefirst conduit 130,second conduit 132,oscillator conduit 134 andapplication conduit 136 may be formed in and configured to extend in one or more plates. In a non-limiting example, and with reference toFIG. 4A , thefirst conduit 130 may be formed in thefirst plate 122a. Thefirst inlet 136 may be formed at a side of thefirst plate 122a facing an adjacent component, such as theadapter 24. Thefirst conduit 130 may be formed through a thickness of thefirst plate 122a. - The
second inlet 140 may be formed in thefirst plate 122a as well. Thesecond conduit 132, as shown inFIGS. 4A-4F , may extend through the thickness of thefirst plate 122a, thesecond plate 122b, thethird plate 122c, thefourth plate 122d, thefifth plate 122e and thesixth plate 122f. In one embodiment, thefirst portion 146 of thesecond conduit 132 extends through thesecond plate 122b, thethird plate 122c, thefourth plate 122d and thefifth plate 122e. As described above, thefirst portion 146 may be formed as an elongated, angled or curved opening in the second throughfifth plates 122b-e. These elongated openings may be similarly positioned on theplates 122b-e so that they are substantially aligned when thenozzle assembly 22 is assembled and secured to theadapter 24. - Referring to
FIGS. 3 and4F , thereservoir 150 may be formed in thesixth plate 122f. Referring toFIGS. 4C-4E , thesecond portion 148 of thesecond conduit 132 may be formed in thethird plate 122c,fourth plate 122d andfifth plate 122e. For example, thebody feed hole 156 may be formed in thefifth plate 122e, the flow-splittingsection 142 may be formed in thefourth plate 122d and the first and secondbranch feed holes third plate 122c. - Referring to
FIGS. 4E and 4F , theoscillator conduit 134 may be formed in thefifth plate 122e andsixth plate 122f. For example, the first and secondarm feed holes leg feed holes fifth plate 122e. The first andsecond oscillator slots sixth plate 122f. - With reference to
FIG. 4B , theapplication conduit 136, including thereceptacle 172,first branch 174a and thesecond branch 174b may be formed in thesecond plate 122b. Theorifice 28 may be formed in thesecond plate 122b as well. The at least oneguide slot 34 may be formed in the first, second andthird plates 122a-c as described below and shown inFIGS. 4A-C . - In one embodiment, the depending
guide section 32 is formed onfirst plate 122a,second plate 122b andthird plate 122c (FIGS. 4A-4C ). Theguide slots 34 are formed on the dependingguide section 32 on the first, second andthird plates guide slot 34 may include a firstguide slot segment 34a formed on thefirst plate 122a, a secondguide slot segment 34b formed on thesecond plate 122b, and a third guide slot segment 34c formed on the on thethird plate 122c. - The first
guide slot segment 34a includes anopen end 36a and aclosed end 38a. Theclosed end 38a may include a curved surface configured to substantially match a profile of thestrand 12 and act as a stop for thestrand 12 to properly position thestrand 12 relative to theorifice 28. The secondguide slot segment 34b includes anopen end 36b. Theopen end 36b may include a substantially inverted v-shaped portion as described above. The secondguide slot segment 34b is in communication with theorifice 28 at an end opposite to theopen end 36b. The third guide slot segment 34c includes anopen end 36c and a closed end 38c. Theopen end 36c may include a substantially inverted v-shaped portion as described above. The closed end 38c of the third guide slot segment 34c may include a substantially square or rectangular portion having a width greater than the width of an adjacent portion of the guide slot segment 34c. - In one embodiment, the
nozzle assembly 22 includes threeguide slots 34, eachguide slot 34 including first, second and thirdguide slot segments 34a-c. However, it is understood the number ofguide slots 34 may vary to accommodate different number ofstrands 12. The number ofguide slots 34 may correspond to the number ofapplication conduits 136. When assembled, the firstguide slot segment 34a, secondguide slot segment 34b and third guide slot segment 34c are substantially aligned to form theguide slot 34. Thestrand 12 may be received through the respectiveopen ends open end 36 of theguide slot 34, and moved to theclosed end 38 of theguide slot 34. Theclosed end 38 of theguide slot 34 is defined by the firstclosed end 38a and third closed end 38c. Theorifice 28 is formed in thesecond plate 122b immediately adjacent to and between the closed ends 38a, 38c. - Referring to
FIGS. 4G and 4H , theseventh plate 122g andeighth plate 122h are positioned at an opposite end of thenozzle assembly 22 from thefirst plate 122a. In one embodiment, theseventh plate 122g acts as a seal that forms a boundary for thesecond conduit 132. That is, theseventh plate 122g is configured to seal thesecond conduit 132 at thereservoir 150 andoscillator slots eighth plate 122h is an end plate for increasing the structural integrity of thenozzle assembly 22. Theeighth plate 122h may include a beveled edge. - At least one
fastening hole 80 may be formed in each of theplates 122a-h. In one embodiment, threefastening holes 80 are formed in eachplate 122a-h. However, it is understood that the present disclosure is not limited to this configuration and the number of fastening holes 80 may vary. The fastening holes 80 of theplates 122a-h are aligned with one another so as to receive a fastener 82 (FIGS. 1 and2 ) through each series of aligned fastening holes 80. Thefastener 82 is configured to tightly fasten theplates 122a-h together so that leakage of the first fluid F1 and/or second fluid F2 betweenindividual plates 122a-h is limited or prevented. -
FIG. 5 is an exploded perspective view of thenozzle assembly 22 according to an embodiment described herein. Referring toFIGS. 2 ,4A-4H , and5 , in one example of thenozzle assembly 22, thefirst inlet 138 is configured to receive the first fluid F1 from the firstfluid supply module 18. Thefirst conduit 130 is configured to receive the first fluid F1, via thefirst inlet 138 and supply the first fluid F1 to theapplication conduit 136. In one embodiment, thereceptacle 172 of theapplication conduit 136 receives the first fluid F 1, and is configured to supply the first fluid F 1 to theorifice 28 for application onto the stand ofmaterial 12. In one embodiment, thenozzle assembly 22 includes threeapplication conduits 136 to apply the first fluid on threerespective strands 12. However, as detailed above, the present disclosure is not limited to this configuration and the number ofapplication conduits 136 may vary depending on a number ofstrands 12 it is desired for thenozzle assembly 22 to accommodate. Further, each ofapplication conduits 136 may be fed from a single, common,first conduit 130. - The
nozzle assembly 22 is configured to receive the second fluid F2 through thesecond inlet 140. Thesecond conduit 132 is configured to receive the second fluid F2 from thesecond inlet 140 and feed the second fluid F2 through thenozzle assembly 22 to theapplication conduit 136. In one example, thefirst portion 146 of thesecond conduit 132 receives the second fluid F2 from thesecond inlet 140 and supplies the second fluid F2 to thereservoir 150. Thereservoir 150 is configured to receive the second fluid F2 from thefirst portion 146 and discharge the second fluid F2 to thesecond portion 148 of thesecond conduit 132. - In one embodiment, each
body feed hole 156 may receive the second fluid F2 from thereservoir 150. Eachbody feed hole 156 supplies the second fluid F2 to a respective flow-splittingsection 142. The second fluid F2 may be received at arespective head 160 of each flow-splittingsection 142 from the correspondingbody feed hole 156. The second fluid F2 may flow through each flow-splittingsection 142 from thehead 160 to the first andsecond legs branch feed holes second legs section 142. Accordingly, the first and secondbranch feed holes second branches respective application conduit 136. - A turbulent flow of the second fluid F2 in the
second portion 148 of the second channel may result in the second fluid F2 being received at the first andsecond legs head 160 at the flow-splittingsection 142 at different pressures. In one embodiment, a portion of the fluid at the higher pressure flows into theoscillator conduit 134, while fluid at the lower pressure flows to a corresponding branchsupply feed hole - For example, the second fluid F2 may be initially received at the
first leg 164a at a higher pressure, and at thesecond leg 164b at a lower pressure relative to thefirst leg 164a. The second fluid F2 received in thefirst leg 164a, at the higher pressure, may be at least partially discharged to the firstleg feed hole 168a of theoscillator conduit 134 and then into thefirst oscillator slot 170a. The second fluid F2 may then flow through thefirst oscillator slot 170a and be discharged from thefirst oscillator slot 170a through the firstarm feed hole 166a of theoscillator conduit 134. This portion of second fluid F2 may then be received in thefirst arm 162a of the flow-splittingsection 142. Another portion of the higher pressure second fluid F2 initially received in thefirst leg 164a is discharged to the firstbranch feed hole 144a, and in turn, to thefirst branch 174a of theapplication conduit 136. - Meanwhile, the second fluid F2 initially received in the
second leg 164b, at the lower pressure, may be discharged from thesecond leg 164b to the secondbranch feed hole 144b. The second fluid F2 may flow though the secondbranch feed hole 144b and into thesecond branch 174b of theapplication conduit 136. - The second fluid F2 received at the
first arm 162a from theoscillator conduit 134, at a higher pressure, may then flow into thesecond leg 164b of the flow-splittingsection 142 due to the initial lower pressure of the second fluid in thesecond leg 164b. This causes thesecond leg 164b to become the leg having the second fluid F2 at the higher pressure, while thefirst leg 164a becomes the leg having the second fluid F2 at the lower pressure. That is, the first andsecond legs oscillator conduit 134. - With the
second leg 164b containing the second fluid F2 at a higher pressure than the second fluid F2 in thefirst leg 164b, a portion of the second fluid F2 may be discharged to the secondleg feed hole 168b of theoscillator conduit 134 and then into thesecond oscillator slot 170b. The second fluid F2 may then flow through thesecond oscillator slot 170b and be discharged through the secondarm feed hole 166b of theoscillator conduit 134. This portion of second fluid F2 may then be received in thesecond arm 162b of the flow-splittingsection 142. Another portion of the higher pressure second fluid F2 received in thesecond leg 164b is discharged to the secondbranch feed hole 144b, and in turn, to thesecond branch 174b of theapplication conduit 136. - Meanwhile, the second fluid F2 in the
first leg 164a, now at the lower pressure, may be discharged from thefirst leg 164a to the firstbranch feed hole 144a. The second fluid F2 may flow though the firstbranch feed hole 144a and into thefirst branch 174a of theapplication conduit 136. - Accordingly, the second fluid F2 may be supplied to the first and second
branch feed holes first branch 174a andsecond branch 174b at alternating higher and lower relative pressures. The varying pressures of the second fluid F2 supplied to the first andsecond branches orifice 28 at different pressures, thereby causing the first fluid F1 to be fluctuated back and forth across a width of thestrand 12. In one embodiment, this configuration causes a lateral fluctuation in first fluid F1 as it is applied onto thestrand 12, such that the first fluid F1 is applied in an irregular, non-predetermined, and/or non-repeatable pattern. - In the examples shown in
FIGS. 1-5 , and as described above, the first fluid F 1 may be an adhesive, such as a hot melt adhesive that is gathered in thereceptacle 172 of theapplication conduit 136 and is forced through theorifice 28 for direct application on thestrand 12, which is positioned at theorifice 28. The first andsecond branches orifice 28. The second fluid F2 may be, for example, air, and may be discharged from thefirst branch 174a andsecond branch 174b at varying pressures causing the first fluid F1 to fluctuate across a width of thestrand 12 during application. - Accordingly, in the examples above, a contact nozzle assembly may be provided that applies an adhesive directly to a strand of material in a non-linear pattern. Thus, the
fluid application device 10 may be operated at increased line speeds associated with contact nozzle configurations, while still providing a non-linear pattern of adhesive applied onto the strand. A non-linear adhesive pattern may allow for the strand orstrands 12 to be bonded to thesubstrate 14 over a larger rotational range of thestrands 12 compared to a linear application pattern. That is, with a linear adhesive pattern, the strand orstrands 12 must be accurately positioned relative to the substrate so that the linearly applied adhesive contacts the substrate. With the non-linear pattern, the strand orstrands 12 may be rotated, intentionally or unintentionally due to movement of the strand through thedevice 10, and still provide a sufficient bonding surface between thestrand 12 and thesubstrate 14. In addition, the non-linear pattern may allow the strand orstrands 12 to be bonded to thesubstrate 14 at points or segments, rather than in a continuous line. This configuration may provide added flexibility, as the strand orstrands 12 are allowed to freely stretch and contract along portions between the bonded segments. -
FIG. 6 is a front view of the components of anozzle assembly 222 according to another embodiment of the present disclosure.FIGS. 7A-7F are enlarged plan views of the components of thenozzle assembly 222 ofFIG. 6 . Referring to the embodiment inFIGS. 6 and7A-7F , the first fluid F 1 may be applied to astrand 12 of material from opposed first andsecond branches more application conduits 336 at varying pressures. Accordingly, the first fluid F1 may be fluctuated across a width of thestrand 12 during application onto thestrand 12. In this embodiment, a second fluid F2 is not used to control application of the first fluid F2 on thestrand 12. Rather, the first fluid F1 is discharged from opposingbranches - Referring to
FIGS. 6 and7A-7F , thefirst conduit 330 may include a first inlet (not shown) at a side of thenozzle assembly 222 facing the adjacent component, such as theadapter 24. Thefirst conduit 330 is configured to receive the first fluid F1 from the firstfluid supply module 18 via the first inlet (not shown). In one embodiment, thefirst conduit 330 includes a first portion 346 that is generally elongated in a width direction. Thefirst conduit 330 may further include one or more body feed holes 356 (FIG. 7B ) aligned with and fluidically connected to first portion 346. - Referring to
FIGS. 6 and7C , thefirst conduit 330 further includes at least one flow-splittingsection 342. In one embodiment, the flow-splittingsection 342 may be formed as a generally body-shaped portion having ahead 360, first andsecond arms second legs - Referring to
FIGS. 6 and7B , theapplication conduit 336 includes thefirst branch 374a and thesecond branch 374b as noted above. In one embodiment, the first andsecond branches second branches orifice 228, where the first fluid F1 may be applied to thestrand 12. Thefirst branch 374a andsecond branch 374b are fluidically connected to thefirst leg 364a and thesecond leg 364b, respectively, of the flow-splittingsection 342. Accordingly, thefirst branch 374a may receive the first fluid F1 from thefirst leg 364a and thesecond branch 374b may receive the first fluid F1 from thesecond leg 364b. In the example shown inFIGS. 6 and7B , threeapplication conduits 336 are provided. However, it is understood that the present disclosure is not limited to the configuration, and the number ofapplication conduits 336 may vary to accommodate a different number ofstrands 12. - With reference to
FIGS. 6 ,7D and 7E , thenozzle assembly 222 further includes anoscillator conduit 334. Theoscillator conduit 334 is fluidically connected to thefirst conduit 330 at the flow-splittingsection 342 and is configured to vary a pressure of the first fluid F1 flowing through the flow-splittingsection 342, in part, by creating or amplifying a turbulent flow in the first fluid F1. - In one embodiment, the
oscillator conduit 334 includes one or more pairs of arm feed holes, each pair of arm feed holes including first and secondarm feed holes leg feed holes arm feed holes first arm 362a andsecond arm 362b, respectively, of the flow-splittingsection 342. Likewise, the first and secondleg feed holes first leg 364a and thesecond leg 364b, respectively, of the flow-splittingsection 342. Theoscillator conduit 334 further includes one or more pairs of oscillator slots, each pair of oscillator slots including first andsecond oscillator slots 370a, 370b. Thefirst oscillator slot 370a is aligned with and fluidically connected to the firstarm feed hole 366a and firstleg feed hole 368a. Likewise, the second oscillator slot 370b is aligned with and fluidically connected to the secondarm feed hole 366b and the secondleg feed hole 368b. Accordingly, thefirst oscillator slot 370a is configured to receive the first fluid F1 from the firstleg feed hole 368a and discharge the first fluid F1 through the firstarm feed hole 366a. Similarly, the second oscillator slot 370b is configured to receive the first fluid F1 from the secondleg feed hole 368b and discharge the first fluid F1 through the secondarm feed hole 366b. - In one embodiment, the first fluid F1 may be received in the first portion 346 of the
first conduit 330 via the first inlet (not shown). Thebody feed hole 356 is configured to receive the first fluid F1 from the first portion 346 of thefirst conduit 330. In one embodiment, there may be three body feed holes 356 configured to receive the first fluid F1 from the first portion 346. However, it is understood that the number of body feed holes 356 may vary and is not limited to this example. The number of body feed holes 356 may correspond to the number ofapplication conduits 336 and the number of strands ofmaterial 12 that may be accommodated by thenozzle assembly 222. In addition, those having ordinary skill in the art will appreciate that additional armfeed hole pairs feed hole pairs oscillator slot pairs 370a, 370b may be provided at theoscillator conduit 334 to correspond to additional flow-splittingsections 342. - The
head 360 of the flow-splittingsection 342 is in fluid communication with thebody hole 356 and is configured to receive the first fluid F1 from thebody feed hole 356. The first fluid F1 may flow from thehead 360 to the first andsecond legs second branches application conduit 336 are configured to receive the first fluid F1 from the respective first andsecond legs section 342. In one embodiment, thefirst conduit 330 may include three flow-splittingsections 342. It is understood, however, that this example is non-limiting, and that the number of flow-splittingsections 342 may vary. The number of flow-splittingsections 342 may correspond to the number of body feed holes 356, such that eachbody feed hole 356 is in fluid communication with ahead 360 of a respective flow-splittingsection 342. - A turbulent flow of the first fluid F1 in the
first conduit 330 may be received at the first andsecond legs head 360 at the flow-splittingsection 342 at different pressures. In one embodiment, at least a portion of the fluid at the higher pressure flows into theoscillator conduit 334, while fluid at the lower pressure flows to a correspondingfirst branch 374a or to asecond branch 374b of theapplication conduit 336. - For example, the first fluid F1 may be initially received in the
first leg 364a at a higher pressure, and in thesecond leg 364b at a lower pressure relative to thefirst leg 364a. The first fluid F1 received in thefirst leg 364a, at the higher pressure, may be at least partially discharged to the firstleg feed hole 368a of theoscillator conduit 334 and then into thefirst oscillator slot 370a. The first fluid F1 may then flow through thefirst oscillator slot 370a and be discharged through the firstarm feed hole 366a of theoscillator conduit 334. This portion of first fluid F1 may then be received in thefirst arm 362a of the flow-splittingsection 342. Another portion of the higher pressure first fluid F1 initially received in thefirst leg 364a is discharged to thefirst branch 374a of theapplication conduit 336. - Meanwhile, the first fluid F1 initially received in the
second leg 364b, at the lower pressure, may be discharged from thesecond leg 364b and received in thesecond branch 374b of theapplication conduit 336. - The first fluid F 1 received at the
first arm 362a from theoscillator conduit 334, at a higher pressure, may then flow into thesecond leg 364b of the flow-splittingsection 342 due to the initial lower pressure of the first fluid F1 in thesecond leg 364b. This causes thesecond leg 364b to become the leg having the first fluid F1 at the higher pressure, while thefirst leg 364a becomes the leg having the first fluid F1 at the lower pressure. That is, the first andsecond legs oscillator conduit 334. - With the
second leg 364b containing the first fluid F1 at a higher pressure than the first fluid F1 in thefirst leg 364a, a portion of the first fluid F1 may be discharged to the secondleg feed hole 368b of theoscillator conduit 334 and then into the second oscillator slot 370b. The first fluid F 1 may then flow through the second oscillator slot 370b and be discharged through the secondarm feed hole 366b of theoscillator conduit 334. This portion of first fluid F1 may then be received in thesecond arm 362b of the flow-splittingsection 342. Another portion of the higher pressure first fluid F1 received in thesecond leg 364b is discharged to thesecond branch 374b of theapplication conduit 336. - Meanwhile, the first fluid F1 in the
first leg 364a, now at the lower pressure, may be discharged from thefirst leg 364a to thefirst branch 374a of theapplication conduit 336. - Accordingly, the first fluid F 1 may be supplied to the
first branch 374a and thesecond branch 374b at alternating higher and lower relative pressures. The varying pressures of the first fluid F1 supplied to the first andsecond branches orifice 228 at different pressures, thereby causing the first fluid F1 to be fluctuated back and forth across a width of thestrand 12. In one embodiment, this configuration causes a lateral fluctuation in first fluid F1 as it is applied onto thestrand 12, such that the first fluid F 1 is applied in an irregular, non-predetermined, and/or non-repeatable pattern. - With further reference to
FIGS. 6 and7A-7C , thenozzle assembly 222 may include a dependingguide section 232 havingguide slots 234 similar to theguide slots 34 described in the embodiments above. For example, thenozzle assembly 222 may include threeguide slots 234, each configured to receive a strand ofmaterial 12. Eachguide slot 234 may include anopen end 236 and aclosed end 238. Theclosed end 238 may act as a stop to position thestrand 12 relative to theorifice 28. Theopen end 236 of eachguide slot 234 may include a portion shaped generally as an inverted "v" to assist in guiding thestrand 12 into theguide slot 234. - The
nozzle assembly 222 may also include securingopenings 76 and fastening holes 80 as described in the embodiments above and shown inFIGS. 1-5 . In the examples shown inFIGS. 6 and7A-7F , thenozzle assembly 22 may include two securingopenings 76 and three fastening holes 80. However, it is understood that these examples are non-limiting and different configurations are envisioned. The securingopenings 76 are configured to receive securingelements 74, and the fastening holes 80 are configured to receivefasteners 82. - The
nozzle assembly 222 may be formed from a plurality of laminated or stackedplates 322a-f secured together by thefasteners 82, and in some embodiments, at least in part by the securingelements 74 as well. The securingopenings 76 and fastening holes 80 may extend through each plate. Referring toFIGS. 6 and7A-7F , thenozzle assembly 222 may be formed by six plates, including afirst plate 322a, asecond plate 322b, athird plate 322c, afourth plate 322d, afifth plate 322e and asixth plate 322f. It is understood that a different number of plates may be implemented in thenozzle assembly 222 so long as the general concepts described above are preserved. - Referring to
FIG. 7A , in one embodiment, thefirst plate 322a may include the first portion 346 of thefirst conduit 330, securingopenings 76 and fastening holes 80. Similar to theguide slots 34 described in the embodiments above, eachguide slot 234 may be formed by, for example, a firstguide slot segment 234a, a second guide slot segment 234b (FIG. 7B ) and a thirdguide slot segment 234c (FIG. 7C ) formed in adjacent plates and aligned so as to receive the strand of material. The firstguide slot segments 234a may be formed in thefirst plate 322a. - Referring to
FIG. 7B , thesecond plate 322b may include body feed holes 356,application conduits 336, securingopenings 76 and fastening holes 80. Thesecond plate 322b may also include secondguide slot segments 34b andorifices 28. - Referring to
FIG. 7C , thethird plate 322c may include flow-splittingsections 342, third guide slot segments 34c, securingopenings 76 and fastening holes 80. Theorifices 28 may be defined in thesecond plate 322b between thefirst plate 322a andthird plate 322c. The dependingguide section 232 may be formed on thefirst plate 322a,second plate 322b andthird plate 322c. Referring toFIGS. 6 and7A-7C , the aligned first, second and thirdguide slot segments 234a-c my form asingle guide slot 234, and threeguide slots 234 may be formed across a width of thenozzle assembly 222. Additionally, thethird plate 322c may include three flow-splittingsections 342. However, it is understood that the number ofguide slots 234 and flow-splitting sections is not limited thereto. - Referring to
FIG. 7D , thefourth plate 322d may include the first and secondarm feed holes leg feed holes oscillator conduit 334. Thefourth plate 322d may also include securingopenings 76 and fastening holes 80. In one embodiment, thefourth plate 322d may include three pairs of first and secondarm feed holes leg feed holes - Referring to
FIG. 7E , thefifth plate 322e may include first andsecond oscillator slots 370a, 370b of theoscillator conduit 334. In addition, thefifth plate 322e may include securingopenings 76 and fastening holes 80. In one embodiment, thefifth plate 322e may include three pairs of first andsecond oscillator slots 370a, 370b, but the present disclosure is not limited thereto. - With reference to
FIG. 7F , thesixth plate 322f may include securingopenings 76 and fastening holes 80. Thesixth plate 322f may seal theoscillator conduit 334 at the first andsecond oscillator slots 370a, 370b. -
FIG. 8 is a front view of the components of anozzle assembly 422 according to another embodiment disclosed herein.FIGS. 9A and 9B are enlarged views of some of the nozzle components of thenozzle assembly 422 shown inFIG. 8 . Referring toFIGS. 8 ,9A and 9B , thenozzle assembly 422 may be a laminated plate nozzle comprising a plurality of laminated plates configured to be secured together to allow for fluid flow therein. In general, thenozzle assembly 422 includes afirst conduit 430 configured to receive the first fluid F1 and allow for flow of the first fluid F 1 within thenozzle assembly 422, a second conduit 432 configured to receive the second fluid F2 and allow for flow of the second fluid F2 within thenozzle assembly 422, and anapplication conduit 436 fluidically connected to thefirst conduit 430 and the second conduit 432 such that theapplication conduit 436 is configured to receive the first fluid F1 and the second fluid F2. - The
first conduit 430 includes afirst inlet 438 configured to receive the first fluid F1 from the firstfluid supply module 18. Thefirst conduit 430 also includes a flow-distributing channel 431. The flow-distributing channel 431 is configured to receive the first fluid F1 from the first conduit and distribute the first fluid F1 in a lateral direction relative to thefirst inlet 438 within thenozzle assembly 422, i.e., across a width direction of thenozzle assembly 422. To this end, the flow-distributing channel 431is shaped so as to have a component extending laterally outward relative to thefirst inlet 438. For example, in one embodiment, the flow-distributing channel 431 may be substantially triangular in shape. As more clearly shown inFIG. 9A , the flow-distributing channel 431 may also include an internally disposedflow control finger 433 configured to direct the first fluid F1 toward an outer periphery within the flow-distributing channel 431. - The second conduit 432 includes a second inlet 440 configured to receive the second fluid F2 from the second
fluid supply module 20. In one embodiment, the second conduit 432 includes one or moreflow splitting sections 442 where the second conduit 432 is split into a plurality of discrete flow paths for the second fluid F2 to deliver the second fluid F2 to the one ormore application conduits 436. In one embodiment eachflow splitting section 442 may include first and secondbranch feed holes application conduit 436. Eachflow spitting section 442 may correspond to arespective application conduit 436. - With further reference to the example in
FIG. 8 , the second conduit 432 includes a first portion 446, a second portion 448 and a reservoir orintermediate portion 450 spacing apart and fluidically connecting the first portion 446 and the second portion 448. The first portion 446 extends between the second inlet 440 and theintermediate portion 450 and the second portion 448 extends between theintermediate portion 450 and the one ormore application conduits 436. In one embodiment, theintermediate portion 450 may include one or more pairs of first andsecond feed slots branch feed holes application conduit 436, and the firstsecond feed slots branch feed holes branch feed holes second feed slots application conduit 436. - The second portion 448 extends between the
intermediate portion 450 and theapplication conduit 436. In one embodiment, the first portion 446 and second portion 448 are configured to direct the second fluid F2 in directions that are generally opposite to one another. In one example, theintermediate portion 450 extends generally perpendicularly between the first portion 446 and the second portion 448, but is not limited to this configuration. The flow splitting section orsections 442 may be formed in the second portion 448 of the second conduit 432. - Referring to
FIGS. 8 and9B , theapplication conduit 436, according to one embodiment, includes a firstfluid receiving section 472 configured to receive the first fluid F1 from thefirst conduit 430, afirst branch 474a and asecond branch 474b configured to receive the second fluid F2 from the second conduit 432, and in one embodiment from respective first andsecond feed holes orifice 428 for discharging the first fluid F1. - With reference to
FIGS. 8 ,9A and 9B , in one embodiment, the first fluid F1 is received in thefirst conduit 430 at thefirst inlet 438. The first fluid F1 may then flow to the flow-distributing channel 431, where the first fluid may be directed laterally, or across a portion of the nozzle's width, relative to theinlet 438 within thenozzle 422 according to a shape of the flow-distributing channel 431 and theflow control finger 433. The flow-distributing channel 431 has a width that generally corresponds to a width across which theapplication conduits 436 are disposed. That is, in one embodiment, the width of the flow-distributing channel 431 is sufficient to dispose eachapplication conduit 436 of a plurality of application conduits in fluid communication with the flow-distributing channel 431. - With further reference to
FIGS. 8 ,9A and 9B , the second fluid F2 may be received in the second conduit 432 at the second inlet 440. The second fluid F2 may flow in the first portion 446 of the second conduit 432 into theintermediate portion 450. In one embodiment, the second fluid may also flow into the first andsecond feed slots flow splitting sections 442. In one embodiment, the second fluid F2 is directed into the first and secondbranch feed holes flow splitting section 442. The second fluid F2 may then flow into the second portion 448 of the second conduit 432. Referring toFIGS. 8 and9B , thefirst branch 474a and thesecond branch 474b of theapplication conduit 436 may receive the second fluid F2 from theflow splitting section 442. - Next, the first fluid F1 may be directed through and out of the
orifice 428 from the firstfluid receiving section 472, while the second fluid is directed through and out of theorifice 428 from the first andsecond branches 474a, b. That is, the first and second fluids F1, F2 may be discharged from theorifice 428 simultaneously, substantially simultaneously or in an alternating pattern. Accordingly, the second fluid F2, fed into theorifice 428 at substantially opposing sides of the first fluid F1, may cause the first fluid F1 to vacillate, oscillate, or be otherwise discharged from the orifice in 428 in a non-linear, irregular, and/or substantially non-repeating pattern. - Still referring to
FIGS. 8 ,9A and 9B , and as described above, thenozzle assembly 422 may be a laminated plate nozzle assembly comprising a plurality of laminated plates. In one embodiment, as shown inFIG. 8 , for example, thenozzle assembly 422 may include afirst plate 422a, asecond plate 422b, athird plate 422c, afourth plate 422d, afifth plate 422e and asixth plate 422f. It is understood that additional or fewer plates may be used in thenozzle assembly 422, and that the various components of each plate may be present in one or more of the plates. In one embodiment, thefirst conduit 430 extends in thefirst plate 422a and thesecond plate 422b. Thefirst inlet 438 may be formed in thefirst plate 422a and the flow-distributing channel 431 may be formed in thesecond plate 422b. The second conduit 432 may be formed in the first throughfifth plates 422a-e, and thesixth plate 422f may be an end or face plate. In one embodiment, the first portion 446 of the second conduit 432 extends in the first through fourplates 422a-d, the intermediate portion extends in thefifth plate 422e and the second portion 448 extends in thefourth plate 422d. Further, the second inlet 440 may be in thefirst plate 422a and the one or moreflow splitting sections 442, including the first and secondbranch feed holes fourth plate 422d. The one ormore application conduits 436 may be disposed in thethird plate 422c. - Referring again to
FIG. 8 , in one embodiment, one ormore plates 422a-f may include one ormore guide slots 434 configured to receive and guide respective strands of material onto which the first fluid F1 may be deposited. Theplates 422a-f may also include one ormore fastening holes 439 configured to receive a fastener for securing the plates together. In the embodiments shown inFIGS. 8 ,9A and 9B , an oscillator conduit, of the type described in the embodiments above with reference toFIGS. 1-7 , may be omitted, yet an oscillating, vacillating or other similar effect may still be achieved when discharging and applying the first fluid F1 onto the strand or strands by way of the embodiments shown inFIGS. 8 ,9A and 9B and described above. In addition, by including the flow-distributing section 431, a flow of the first fluid F1 may be more evenly distributed to theapplication conduits 436, compared to a nozzle where the first fluid inlet is aligned with one of a plurality of application conduits. -
FIGS. 10A and 10B illustrate another embodiment of thenozzle assembly 422 having differently configured nozzle plates. In the embodiment ofFIGS. 10A and 10B , the second andthird nozzle plates third nozzle plates 522b (FIG. 10A ) and 522c (FIG. 10B ), while the remaining nozzle plates in thenozzle assembly 422 may be the same as those shown inFIG. 8 . With reference toFIG. 10A , the flow-distributingchannel 531 may be formed having a width sufficient for fluid communication with a predetermined number ofapplication conduits 536. In one embodiment, the flow-distributingchannel 531 may include afirst arm 531a, asecond arm 531b and abase 531c extending between and connected thefirst arm 531a to thesecond arm 531b. In addition, thefirst inlet 538 extends from thefirst plate 422a through thesecond plate 522b to a flow reversal anddivider section 535 in thethird plate 522c. The flow reversal anddivider section 535 is configured to receive the first fluid F1. The flow of the first fluid F1 is reversed by way of interaction with the adjacentfourth plate 422d, which functions, in part, as a backing plate. The reversed flow of the first fluid F1 is divided between afirst leg 535a and asecond leg 535b. The first andsecond legs second arms channel 531 at the first andsecond arms base 531c, where the first fluid F1 may then be distributed and flow to theapplication conduits 536. In particular, the first fluid F1 may be received in the respective first fluid receiving sections of 572 of theapplication conduits 536. It is understood that description of certain features of this embodiment which are the same as features in the embodiments above may be omitted in the discussion of this embodiment below. -
FIGS. 11A and 11B are enlarged views of thefourth plate 422d andfifth plate 422e, respectively, of thenozzle assembly 422 shown inFIG. 8 . Referring toFIG. 11A , thefourth plate 422d may include the first portion 446 of the second conduit 432 and the second portion 448 of the second conduit 432. The second portion 448 includes one or moreflow splitting sections 442, and eachflow splitting section 442 may include first and secondbranch feed holes FIG. 11B , thefifth plate 422e include theintermediate portion 450 of the second conduit 432. In one embodiment, theintermediate portion 450 may include feed slots disposed in fluid communication the branch feed holes of the one or moreflow splitting sections 442. For example, theintermediate portion 450 may include first andsecond feed slots branch feed holes FIGS. 8 ,11A, and 11B , the second fluid F2 may flow in thenozzle assembly 422 through the first portion 446 of the second conduit 432, to theintermediate portion 450 and thefeed slots branch feed holes second branches application conduit 436. -
FIG. 12 is a front view of the components of anozzle assembly 622 according to another embodiment disclosed herein. In one embodiment, thenozzle assembly 622 may be configured to discharge only the first fluid F1. Thenozzle assembly 622 includes, for example, a first conduit 630 having a first inlet 638 and a flow-distributing channel 631. Thenozzle assembly 622 also includes one ormore application conduits 636 configured to receive the first fluid F1 from the first conduit 630, and discharge the first fluid F1 through acorresponding orifice 628. Accordingly, the first fluid F1 may be received in the first conduit 630 through the first inlet 638. The first fluid F1 may then flow to the flow-distributing channel 631 where the first fluid F1 may then be distributed at least in a lateral direction of thenozzle assembly 622. Subsequently, the first fluid F1 may be received in the one ormore application conduits 636 and discharged from the correspondingorifices 628 for application onto a strand of material. Thenozzle assembly 622 may also include one ormore guide slots 634 for guiding a strand relative to theorifice 628. - Referring still to
FIG. 12 , thenozzle assembly 622 may be formed by a plurality of plates secured together in the manner described above. In one embodiment, thenozzle assembly 622 may include afirst plate 622a, asecond plate 622b, athird plate 622c and afourth plate 622d. It is understood, however, thatnozzle assembly 622 is not limited to only these first throughfourth plates 622a-d. In one embodiment, the first inlet 638 may be formed in thefirst plate 622a, the flow-distributing channel 631 may be formed in thesecond plate 622b, and the one ormore application conduits 636 andcorresponding orifices 628 may be formed in thethird plate 622c. Thefourth plate 622d may serve as a backing plate or face plate. Asecond conduit 632 may also be formed in thenozzle assembly 622. However, thefourth plate 622d, or backing plate, is configured to block the flow of a second fluid F2 in the second conduit, such that only the first fluid F1 may be discharged. -
FIGS. 13A, 13B, 14A, 14B, 15A and 15B show alternative embodiments of the first conduit, and in particular, the flow-distributing channel, which may be used in thenozzle assembly 422 ofFIG. 8 . The plates shown in the embodiments ofFIGS. 13-15 may replace the second andthird plates nozzle assembly 422 shown inFIG. 8 . Referring toFIGS. 13A and 13B , the flow-distributingchannel 731 may be formed in asecond plate 722b. The flow-distributingchannel 731 may include an inlet section 731c configured to receive the first fluid from the first inlet 438 (seeFIG. 8 ). The flow-distributingchannel 731 may also include afirst arm 731a and asecond arm 731b extending from the inlet section 731c. In one embodiment, eacharm second arms arm respective application conduit 736, formed on thethird plate 722c. Accordingly, The first fluid F1 may be received in thefirst inlet 438, flow into the inlet section 731c, thefirst arm 731 and thesecond arm 731b. The first fluid F1 may then flow torespective application conduits 736. - Referring to
FIGS. 14A and 14B , theinlet 838 may extend from thefirst plate 422a, through thesecond plate 822b to the flow reversal anddivider section 835 in thethird plate 822c. The flow reversal anddivider section 835 is configured to receive the first fluid F1. The flow of the first fluid F1 is reversed by way interacting with the adjacentfourth plate 422d (seeFIG. 8 ), which functions, in part, as a backing plate. The reversed flow of the first fluid F1 is divided between a first leg 835a and asecond leg 835b. The first andsecond legs 835a, 835b are disposed in fluid communication at or nearrespective ends channel 831 in thesecond plate 822b. Accordingly, the first fluid F1 may be received in the flow-distributingchannel 831 and flow toward a center of thechannel 831. The first fluid F1 may then flow back toward thethird plate 822c (with thefirst plate 422a acting as a backing plate to the channel 831) to the one ormore application conduits 836 in thethird plate 822c. - Referring to
FIGS. 15A and 15B , theinlet 938 may extend from thefirst plate 422a, through thesecond plate 922b to the flow reversal and divider section 935 in thethird plate 922c. The flow reversal and divider section 935 is configured to receive the first fluid F1. The flow of the first fluid F1 is reversed by way interacting with the adjacentfourth plate 422d (seeFIG. 8 ), which functions, in part, as a backing plate. The reversed flow of the first fluid F1 is divided between afirst leg 935a and asecond leg 935b. The first andsecond legs respective ends channel 931 in thesecond plate 922b. Accordingly, the first fluid F1 may be received in the flow-distributingchannel 931 and flow toward a center of thechannel 931. The first fluid F1 may then flow back toward thethird plate 922c (with thefirst plate 422a acting as a backing plate to the channel 931) to the one ormore application conduits 936 in thethird plate 922c. - In the examples above, the first fluid F1 may be directly, i.e., contactingly, applied on a strand or
strands 12 in a non-linear pattern. Accordingly, thefluid application device 10 may be operated at increased line speeds when compared to non-contact nozzle configurations, while still providing a benefits of a non-linear application pattern detailed above. - It should also be understood that various changes and modifications to the presently disclosed embodiments will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the scope of the present disclosure and without diminishing its intended advantages. It is therefore intended that such changes and modifications be covered by the appended claims. It is further understood that various features from the embodiments described above and shown in the drawings may be combined with other embodiments described herein and shown in the drawings.
Claims (9)
- A nozzle assembly (422) for a fluid application device (10), the nozzle assembly (422) comprising:- a first conduit (430) configured to receive a first fluid (F1) from an applicator head (16), the first conduit (430) comprising a first inlet (538, 838, 938) configured to receive the first fluid (F1) and a flow-distributing channel (531, 831, 931) downstream from, and in fluid communication with the fluid inlet, the flow-distributing channel (531, 831, 931) configured to direct the first fluid (F1) in a lateral direction;- an application conduit (536, 836, 936) including a first fluid receiving section (572) configured to receive the first fluid (F1) from the flow-distributing channel (531, 831, 931), and- an orifice (428) fluidically connected to the application conduit (536, 836, 936), the orifice (428) configured to discharge the first fluid (F1) for application onto a strand (12) of material,- a second conduit (432) configured to receive a second fluid (F2) from the applicator head (16), and the application conduit (536, 836, 936) further comprises a first branch (474a) and a second branch (474b), wherein the first branch (474a) and the second branch (474b) are fluidically connected to the second conduit (432) and the first fluid receiving section (472, 572), and are configured to receive the second fluid (F2) from the second conduit (432), characterized byfurther comprising a flow reversal and divider section (535, 835, 935) disposed between the first inlet (538, 838, 938) and the flow-distributing channel (531, 831, 931), the flow reversal and divider section (535, 835, 935) configured to reverse a direction of flow of the first fluid (F1) and divide the flow of the first fluid (F1) to a first leg (535a, 835a, 935a) and a second leg (535b, 835b, 935b),wherein the flow-distributing channel (531, 831, 931) is configured to receive the first fluid (F1) from the flow reversal and divider section (535, 835, 935).
- The nozzle assembly (422) of claim 1,
wherein the flow-distributing channel (531, 831, 931) further comprises a flow control finger (433) configured to direct the first fluid (F1) toward an outer periphery within the flow-distributing channel (531, 831, 931). - The nozzle assembly (422) of claim 1 or 2,
the second conduit (432) further comprising a flow-splitting section (442), the flow-splitting section (442) including a first branch feed hole (444a) fluidically connected to the first branch (474a) of the application conduit (536, 836, 936) and a second branch feed hole (444b) fluidically connected to the second branch (474b) of the application conduit (536). - The nozzle assembly (422) of one of claims 1 to 3,
the second conduit (432) further comprising a first portion (446), an intermediate portion (450), and a second portion (448), wherein the first portion (446) is fluidically connected to, and spaced from, the second portion (448) by the intermediate portion (450), and the flow-splitting section (442) is formed in the second portion. - The nozzle assembly (422) of one of claims 1 to 4,
wherein the first branch (474a) and the second branch (474b) are positioned relative to the orifice (428) such that discharge of the second fluid (F2) from the first branch and the second branch causes the first fluid (F1) to fluctuate during application onto the strand (12) of material. - A fluid application device (10), comprising:- an applicator head (16); and- a nozzle assembly (422) as defined in one of the preceding claims fluidically coupled to the applicator head (16).
- The fluid application device (10) of claim 6,
further comprising one or more guide slots (434) configured to position a strand (12) of material relative to the orifice (428). - The fluid application device (10) of claim 7,
the guide slot (434) further comprising an open end configured to receive the strand (12) of material and a closed end defining a stop where the strand (12) of material is positioned at or at least partially within the orifice (428). - The fluid application device (10) of one of claims 6 to 8,
wherein the first fluid (F1) is an adhesive and the second fluid (F2) is air.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US15/800,878 US10737287B2 (en) | 2014-01-21 | 2017-11-01 | Fluid application device having a modular contact nozzle with a fluidic oscillator |
PCT/US2018/057960 WO2019089436A1 (en) | 2017-11-01 | 2018-10-29 | Fluid application device having a modular contact nozzle with a fluidic oscillator |
Publications (2)
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EP3703864A1 EP3703864A1 (en) | 2020-09-09 |
EP3703864B1 true EP3703864B1 (en) | 2024-05-22 |
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EP18804774.0A Active EP3703864B1 (en) | 2017-11-01 | 2018-10-29 | Fluid application device having a flow distributing channel |
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EP (1) | EP3703864B1 (en) |
JP (1) | JP7391838B2 (en) |
CN (1) | CN111491740B (en) |
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US4680595A (en) * | 1985-11-06 | 1987-07-14 | Pitney Bowes Inc. | Impulse ink jet print head and method of making same |
DE4010262A1 (en) * | 1990-03-30 | 1991-10-02 | Debatin Anton Gmbh | Slot outlet gluing nozzle - has parallel baffle passages running in flow direction after distribution chamber |
EP1604701B1 (en) * | 2004-06-09 | 2010-12-15 | Microflow Engineering SA | Improved modular liquid spray system |
DE102008041423B4 (en) * | 2008-08-21 | 2015-04-16 | Fmp Technology Gmbh Fluid Measurements & Projects | Coating tool for applying a liquid film to a substrate |
US20140261967A1 (en) * | 2013-03-13 | 2014-09-18 | Nordson Corporation | Method of manufacturing a personal hygiene product |
US9718083B2 (en) * | 2013-11-14 | 2017-08-01 | Illinois Tool Works Inc. | Fluid application device having a modular nozzle assembly for applying fluid to an article |
US9718084B2 (en) * | 2014-01-21 | 2017-08-01 | Illinois Tool Works Inc. | Fluid application device having a modular contact nozzle with a fluidic oscillator |
JP6877877B2 (en) * | 2016-01-26 | 2021-05-26 | ノードソン コーポレーションNordson Corporation | nozzle |
-
2018
- 2018-10-29 JP JP2020524098A patent/JP7391838B2/en active Active
- 2018-10-29 BR BR112020008739-4A patent/BR112020008739B1/en active IP Right Grant
- 2018-10-29 EP EP18804774.0A patent/EP3703864B1/en active Active
- 2018-10-29 CN CN201880081870.2A patent/CN111491740B/en active Active
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JP2021501049A (en) | 2021-01-14 |
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JP7391838B2 (en) | 2023-12-05 |
BR112020008739A2 (en) | 2020-10-20 |
CN111491740B (en) | 2023-05-09 |
EP3703864A1 (en) | 2020-09-09 |
CN111491740A (en) | 2020-08-04 |
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