EP0254564A2 - A spray gun - Google Patents
A spray gun Download PDFInfo
- Publication number
- EP0254564A2 EP0254564A2 EP87306509A EP87306509A EP0254564A2 EP 0254564 A2 EP0254564 A2 EP 0254564A2 EP 87306509 A EP87306509 A EP 87306509A EP 87306509 A EP87306509 A EP 87306509A EP 0254564 A2 EP0254564 A2 EP 0254564A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- additive
- nozzle
- delivered
- under pressure
- reservoir
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
- B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
Definitions
- the present invention relates to apparatus to coat surfaces and more particularly but not exclusively to spray guns.
- Conventional spray coating apparatus employ a spray head to apply a coating to an object. Once coated, the object must be allowed to stand a predetermined time prior to being placed in an oven. Thereafter the object must be allowed to cool and dry.
- This conventional procedure was improved by employing a catalyst to cure the coating on the object. It also eliminated the use of an oven. However, this modified process was still reasonably time consuming and required considerable capital outlay, as well as requiring the use of a catalyst.
- a spray coating apparatus including a first nozzle to which a flowable coating substance is delivered under pressure so as to be sprayed therefrom, a second nozzle located adjacent said first nozzle to which a flowable additive is delivered under pressure so as to be sprayed therefrom, and wherein said nozzles are positioned relative to each other so that said substance and additive sprayed from the nozzles are mixed after leaving said apparatus and before being deposited on an object to be coated.
- a hand-held spray gun 10 consisting of a body 11 providing a handle 12 and a trigger 13. Air under pressure is delivered to the air galleries within the body 11 by means of a hose coupling 26.
- a pressure adjustment valve 14 is provided to adjust the pressure delivered to the internal galleries of the gun 11.
- the trigger 13 operates a valve 15 which enables air under pressure to be delivered to the fluid nozzle 17 and air cap set 18, in a conventional manner.
- a spreader adjustment valve set 19 is also provided together with adjustment shaft 21.
- a fluid adjustment assembly 20 with its adjustment shaft 21 are also provided in a conventional manner.
- a reservoir 22 which receives a catalyst or tinting agent to be delivered to the air passing through the galleries extending to the fluid nozzle 7 and/or the nozzles of the air cap set 18.
- the reservoir 22 is pressurised by the pressure line 23 extending to a pressurised duct 24 downstream of the valve 15.
- the catalyst or testing agent is delivered to the air duct 27 via line 25.
- the duct 27 extends to the nozzle of the air cap set 18. It should be appreciated that due to flow resistance within the gallery there is opressive draw between the position at which the line 23 communicates with the galleries, and the position at which the line 25 communicates with the duct 27. Accordingly, if a paint or other coating substance is delivered to the fuel joint 16, a setting catalyst or tint may be mixed with the substance sprayed to facilitate setting and/or tinting.
- a discrete reservoir 22 is employed.
- the reservoir 22 could be replaced with a reservoir 29 ( Figure 2) remote from the gun 10 and not mounted thereon.
- Extending to the reservoir 29 is a pressure line 28, which delivers air under pressure to the reservoir 29.
- the contents of the reservoir 29 are then delivered to an air operated, or electrically operated valve 30.
- the valve 30 is controlled by air under pressure being delivered to the line 23. Once the trigger 13 has been actuated, air under pressure is delivered to the valve 30, which results in the valve 30 opening to allow the catalyst or tinting agent to be delivered to the duct 27 via line 25.
- the valve 30 is normally closed until actuated.
- a regulating valve could be provided in the line 23 in order to regulate the pressure delivered to the reservoir.
- the valve could be of a pressure-regulating form if so required.
- a flow regulating valve could be located in the line 25.
Landscapes
- Nozzles (AREA)
Abstract
Description
- The present invention relates to apparatus to coat surfaces and more particularly but not exclusively to spray guns.
- Conventional spray coating apparatus employ a spray head to apply a coating to an object. Once coated, the object must be allowed to stand a predetermined time prior to being placed in an oven. Thereafter the object must be allowed to cool and dry. This conventional procedure was improved by employing a catalyst to cure the coating on the object. It also eliminated the use of an oven. However, this modified process was still reasonably time consuming and required considerable capital outlay, as well as requiring the use of a catalyst.
- Accordingly, known systems have been expensive to run, time consuming and have required considerable capital outlay.
- It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.
- There is disclosed herein a spray coating apparatus including a first nozzle to which a flowable coating substance is delivered under pressure so as to be sprayed therefrom, a second nozzle located adjacent said first nozzle to which a flowable additive is delivered under pressure so as to be sprayed therefrom, and wherein said nozzles are positioned relative to each other so that said substance and additive sprayed from the nozzles are mixed after leaving said apparatus and before being deposited on an object to be coated.
- A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings, wherein:
- Figure 1 is a schematic part sectioned side elevation of a spray gun; and
- Figure 2 is a schematic perspective view of the gun of Figure 1 connected to a remote reservoir.
- It should be appreciated that the present invention will be described with reference to a hand-held spray gun, however, the present invention is also applicable to other spray heads.
- In the accompanying drawings, there is schematically depicted a hand-held
spray gun 10 consisting of abody 11 providing ahandle 12 and atrigger 13. Air under pressure is delivered to the air galleries within thebody 11 by means of ahose coupling 26. Apressure adjustment valve 14 is provided to adjust the pressure delivered to the internal galleries of thegun 11. Thetrigger 13 operates avalve 15 which enables air under pressure to be delivered to thefluid nozzle 17 and air cap set 18, in a conventional manner. A spreaderadjustment valve set 19 is also provided together withadjustment shaft 21. Afluid adjustment assembly 20 with itsadjustment shaft 21 are also provided in a conventional manner. - Mounted on the
gun body 11 is areservoir 22 which receives a catalyst or tinting agent to be delivered to the air passing through the galleries extending to the fluid nozzle 7 and/or the nozzles of the air cap set 18. Thereservoir 22 is pressurised by thepressure line 23 extending to apressurised duct 24 downstream of thevalve 15. The catalyst or testing agent is delivered to theair duct 27 vialine 25. Theduct 27 extends to the nozzle of the air cap set 18. It should be appreciated that due to flow resistance within the gallery there is opressive draw between the position at which theline 23 communicates with the galleries, and the position at which theline 25 communicates with theduct 27. Accordingly, if a paint or other coating substance is delivered to thefuel joint 16, a setting catalyst or tint may be mixed with the substance sprayed to facilitate setting and/or tinting. - It should be appreciated that in the above described preferred embodiment, a
discrete reservoir 22 is employed. However, thereservoir 22 could be replaced with a reservoir 29 (Figure 2) remote from thegun 10 and not mounted thereon. Extending to thereservoir 29 is apressure line 28, which delivers air under pressure to thereservoir 29. The contents of thereservoir 29 are then delivered to an air operated, or electrically operatedvalve 30. Thevalve 30 is controlled by air under pressure being delivered to theline 23. Once thetrigger 13 has been actuated, air under pressure is delivered to thevalve 30, which results in thevalve 30 opening to allow the catalyst or tinting agent to be delivered to theduct 27 vialine 25. Thevalve 30 is normally closed until actuated. - If so desired a regulating valve could be provided in the
line 23 in order to regulate the pressure delivered to the reservoir. The valve could be of a pressure-regulating form if so required. As an alternative a flow regulating valve could be located in theline 25. - It will of course be understood that the present invention has been described above purely by way of example, and modifications of detail can be made within the scope of the invention.
Claims (7)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU7079/86 | 1986-07-23 | ||
AU707986 | 1986-07-23 | ||
AU7752/86 | 1986-08-29 | ||
AU775286 | 1986-08-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0254564A2 true EP0254564A2 (en) | 1988-01-27 |
EP0254564A3 EP0254564A3 (en) | 1989-07-05 |
Family
ID=25612143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87306509A Withdrawn EP0254564A3 (en) | 1986-07-23 | 1987-07-23 | A spray gun |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0254564A3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0718042A1 (en) * | 1994-12-08 | 1996-06-26 | Ransburg Corporation | Two component external mix spray gun |
BE1015269A3 (en) * | 2003-01-03 | 2004-12-07 | Waas Chemicals Bv Met Beperkte | Spray device for e.g. two component adhesive, has spray gun with compressed air supply line including nebulae for one component |
CN111867715A (en) * | 2018-02-22 | 2020-10-30 | 科思创知识产权两合公司 | Multi-chamber container for storing and mixing multiple-component liquid coating or adhesive systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB750940A (en) * | 1953-01-09 | 1956-06-20 | A Landolt A G Dr | Improvements in or relating to spraying apparatus |
US2930532A (en) * | 1958-12-19 | 1960-03-29 | Oce W Johnson | Spray gun nozzle |
US3507451A (en) * | 1968-08-21 | 1970-04-21 | Oce W Johnson | Spray gun nozzle |
-
1987
- 1987-07-23 EP EP87306509A patent/EP0254564A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB750940A (en) * | 1953-01-09 | 1956-06-20 | A Landolt A G Dr | Improvements in or relating to spraying apparatus |
US2930532A (en) * | 1958-12-19 | 1960-03-29 | Oce W Johnson | Spray gun nozzle |
US3507451A (en) * | 1968-08-21 | 1970-04-21 | Oce W Johnson | Spray gun nozzle |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0718042A1 (en) * | 1994-12-08 | 1996-06-26 | Ransburg Corporation | Two component external mix spray gun |
BE1015269A3 (en) * | 2003-01-03 | 2004-12-07 | Waas Chemicals Bv Met Beperkte | Spray device for e.g. two component adhesive, has spray gun with compressed air supply line including nebulae for one component |
CN111867715A (en) * | 2018-02-22 | 2020-10-30 | 科思创知识产权两合公司 | Multi-chamber container for storing and mixing multiple-component liquid coating or adhesive systems |
US11911735B2 (en) | 2018-02-22 | 2024-02-27 | Covestro Deutschland Ag | Multiple-chamber container for storing and mixing a multi-component liquid coating or adhesive system |
Also Published As
Publication number | Publication date |
---|---|
EP0254564A3 (en) | 1989-07-05 |
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Legal Events
Date | Code | Title | Description |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19900201 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FILETTI, OSWALD MICHAEL |