A liquid dispensing valve includes a liquid inlet for receiving the liquid and a liquid outlet for discharging the liquid. A valve member is mounted for movement relative to the liquid outlet between open and closed positions. A liquid passage communicates between the liquid inlet and the liquid out
A liquid dispensing valve includes a liquid inlet for receiving the liquid and a liquid outlet for discharging the liquid. A valve member is mounted for movement relative to the liquid outlet between open and closed positions. A liquid passage communicates between the liquid inlet and the liquid outlet. An air inlet is provided for receiving air from a source of pressurized air. An air passageway is coupled with the air inlet. A pneumatic actuator communicates with the air passageway for moving the valve member at least to the open position. An electrically operated air supply device interacts with the air passageway so as to control the flow of pressurized air to the pneumatic actuator.
대표청구항▼
1. An adhesive dispensing valve, comprising: an adhesive dispensing portion including an adhesive inlet for receiving the adhesive and an adhesive outlet for discharging the adhesive, a valve member extending along a longitudinal axis and mounted for movement relative to said adhesive outlet between
1. An adhesive dispensing valve, comprising: an adhesive dispensing portion including an adhesive inlet for receiving the adhesive and an adhesive outlet for discharging the adhesive, a valve member extending along a longitudinal axis and mounted for movement relative to said adhesive outlet between open and closed positions, and an adhesive passage communicating between said adhesive inlet and said adhesive outlet;an actuation portion comprising a housing and with an air inlet for receiving air from a source of pressurized air;at least one air passageway coupled with said air inlet;a pneumatic actuator fixed to the housing, the pneumatic actuator operated by positively pressurized air flowing within said air passageway to move said valve member at least to the open position, said pneumatic actuator being coupled to said valve member along the longitudinal axis such that said pneumatic actuator moves along the longitudinal axis with said valve member; andan electrically operated air supply device interacting with said at least one air passageway to control the flow of pressurized air from the source of pressurized air to said pneumatic actuator, said air supply device comprising a first air chamber coupled with a first air passageway, a second air chamber coupled to a second air passageway, a first spool reciprocately mounted within the first air chamber, and a second spool reciprocately mounted within the second air chamber,wherein the pressurized air reciprocates said first and second spools between first and second positions such that, in the first position, said first spool prevents the pressurized air from flowing through said first air chamber, and in the second position, said second spool prevents the pressurized air from flowing through said second air chamber. 2. The adhesive dispensing valve of claim 1, wherein said actuation portion is formed from a thermally insulating, nonmetallic material. 3. The adhesive dispensing valve of claim 1, wherein said air supply device further comprises a movable element engageable with said actuation portion and movable with respect to said air inlet to selectively allow and prevent flow of the pressurized air to operate said pneumatic actuator. 4. The adhesive dispensing valve of claim 1, wherein said air supply device further comprises an electrically operated solenoid including a movable element. 5. The adhesive dispensing valve of claim 4, further comprising an insulating member to insulate said solenoid from the adhesive. 6. The adhesive dispensing valve of claim 4, wherein said solenoid further comprises a cartridge-style solenoid valve. 7. The adhesive dispensing valve of claim 4, wherein said movable element of said air supply device interacts with said air inlet. 8. The adhesive dispensing valve of claim 1, wherein said air supply device is mounted to said housing, said air supply device further comprising a movable element extending from outside said housing at least partially into said housing. 9. The adhesive dispensing valve of claim 1, wherein the first air passageway is configured to supply pressurized air to said pneumatic actuator to move said valve member to the closed position, and wherein the second air passageway is configured to supply pressurized air to said pneumatic actuator to move said valve member to the open position, and wherein said air supply device further includes a movable element having an air connection passage, said air connection passage communicating with said first air passageway when said movable element is in a first position, and said air connection passage communicating with said second air passageway when said movable element is in a second position. 10. The adhesive dispensing valve of claim 1, wherein said air supply device further comprises a housing that defines the first air chamber and the second air chamber, and said air supply device further comprises a movable element for controlling pressurized air flow to said first and second spools, and wherein the pressurized air reciprocates said spools between the first and second positions, said first position directing pressurized air to said pneumatic actuator to move the valve member to the closed position and said second position directing pressurized air to said pneumatic actuator to move the valve member to the open position. 11. The adhesive dispensing valve of claim 10, wherein said air supply device further comprises an electrically operated solenoid, said electrically operated solenoid comprising said movable element, and said first and second spools further comprising pneumatic pistons, said movable element selectively controlling pressurized air delivery to said pneumatic pistons. 12. The adhesive dispensing valve of claim 1, wherein said air supply device further comprises an electrically operated solenoid having a movable element, wherein said movable element is physically connected to at least one spool configured to control flow of the pressurized air to said pneumatic actuator. 13. The adhesive dispensing valve of claim 1, wherein said air supply device is thermally insulated from said adhesive dispensing portion. 14. The adhesive dispensing valve of claim 1, further comprising a valve seat in fluid communication with said at least one air passageway, said air supply device further including a movable element selectively engageable with said valve seat to control the flow of air through said at least one air passageway to said pneumatic actuator. 15. The adhesive dispensing valve of claim 1, wherein said air supply device further comprises an electrically operated solenoid valve, said electrically operated solenoid valve configured to selectively control introduction of the positively pressurized air to the first and second air passageways. 16. The adhesive dispensing valve of claim 1, wherein said actuation portion includes a chamber, and said pneumatic actuator divides said chamber into a first chamber portion containing a spring for biasing said pneumatic actuator towards the closed position and a second chamber portion selectively receiving pressurized air from said air passageway. 17. The adhesive dispensing valve of claim 1, wherein said pneumatic actuator further comprises a movable diaphragm. 18. An adhesive dispensing valve, comprising: a housing having an air inlet for receiving pressurized air, an adhesive inlet for receiving the adhesive, and an adhesive outlet for discharging the adhesive;a valve member disposed within said housing for moving from an open position, for allowing the adhesive to discharge from said adhesive outlet, to a closed position, for terminating the discharge of adhesive from said adhesive outlet;a pneumatic actuation element disposed within said housing and connected to said valve member for moving said valve member at least from the closed position to the open position;at least one air passageway disposed within said housing and extending at least partially between said air inlet and said pneumatic actuation element;an electrically operated air supply device interacting with said at least one air passageway to control the flow of pressurized air to said pneumatic actuation element, said air supply device comprising a first air chamber coupled with a first air passageway, a second air chamber coupled to a second air passageway, a first spool reciprocately mounted within the first air chamber, and a second spool reciprocately mounted within the second air chamber,wherein the pressurized air reciprocates said first and second spools between first and second positions such that in the first position said first spool prevents the pressurized air from flowing through said first air chamber, and in the second position, said second spool prevents the pressurized air from flowing through said second air chamber; andan actuator configured to allow the pressurized air to flow into said air supply device, such that when said actuator is in a closed position, flow of the pressurized air is terminated at a location within said housing. 19. The adhesive dispensing valve of claim 18, wherein said actuator is electrically operated. 20. The adhesive dispensing valve of claim 19, wherein said actuator is a solenoid. 21. The adhesive dispensing valve of claim 20, further comprising an insulating member to insulate said solenoid from the adhesive. 22. The adhesive dispensing valve of claim 18, wherein said pneumatic actuation element moves within a chamber communicating with a terminal end of said at least one air passageway, and wherein said housing further includes an actuation housing portion defined by a unitary housing member having said air inlet, said chamber, said at least one air passageway, and the location where the flow of pressurized air is terminated when said actuator is in the closed position. 23. The adhesive dispensing valve of claim 22, wherein said actuation housing portion is formed from a thermally insulating, nonmetallic material. 24. An adhesive dispensing valve, comprising: a housing having an air inlet for receiving pressurized air, an adhesive inlet for receiving the adhesive, and an adhesive outlet for discharging the adhesive;a valve member disposed within said housing for moving from an open position, for allowing the adhesive to discharge from said adhesive outlet, to a closed position, for terminating the discharge of adhesive from said adhesive outlet;a pneumatic actuation element disposed within said housing and connected to said valve member for moving said valve member at least from the closed position to the open position;an air passageway disposed within said housing and extending between said air inlet and said pneumatic actuation element; andan actuator having at least a portion mounted for movement within said air passageway, and for moving from a closed position to an open position for allowing the pressurized air to flow to said pneumatic actuation element, such that when said actuator is in the closed position, flow of the pressurized air is terminated at a location within said housing,wherein said housing further includes an actuation housing portion defined by a unitary housing member having said air passageway and a valve seat in said air passageway in close proximity to said pneumatic actuation element, said actuator interacting with said valve seat to define the open and closed positions, such that when said actuator moves from the closed position to the open position, the flow of the pressurized air is already within said actuation housing portion in close proximity to said pneumatic actuation element and quickly pressurizes said pneumatic actuation element to move said valve member; andwherein said actuation housing portion is formed from a thermally insulating, nonmetallic material. 25. The adhesive dispensing valve of claim 24, wherein said housing contains first and second spools each mounted for reciprocating movement, and said actuator further comprises a movable element for controlling pressurized air flow to said spools, and wherein the pressurized air reciprocates said spools between the first and second positions, said first position directing pressurized air to said pneumatic actuation element to move said valve member to the closed position and said second position directing pressurized air to said pneumatic actuation element to move said valve member to the open position. 26. The adhesive dispensing valve of claim 24, wherein said housing includes a chamber, and said pneumatic actuation element divides said chamber into a first chamber portion containing a spring for biasing said pneumatic actuation element towards the closed position and a second chamber portion selectively receiving pressurized air from said air passageway. 27. The adhesive dispensing valve of claim 24, wherein said pneumatic actuation element further comprises a movable diaphragm. 28. An adhesive dispensing valve, comprising: an adhesive dispensing portion including an inlet for receiving the adhesive and an outlet for discharging the adhesive, a valve member extending along a longitudinal axis and mounted for movement relative to said outlet between open and closed positions, and an adhesive passage communicating between said inlet and said outlet;an actuation portion including a housing with at least one air passageway, said housing further containing a pneumatic actuator having a first and second surface configured to be exposed to pressurized air and each of the first and second surfaces having a different diameter, the pneumatic actuator operated by positively pressurized air flowing within said at least one air passageway to move said valve member at least to the open position, said pneumatic actuator being coupled to said valve member along the longitudinal axis such that said pneumatic actuator moves along the longitudinal axis with said valve member;an air supply device interacting with said at least one air passageway to control the flow of pressurized air to said pneumatic actuator, said air supply device comprising a first air chamber coupled with a first air passageway, a second air chamber coupled to a second air passageway, a first spool reciprocately mounted within the first air chamber, and a second spool reciprocately mounted within the second air chamber,wherein the pressurized air reciprocates said first and second spools between first and second positions such that, in the first position, said first spool prevents the pressurized air from flowing through said first air chamber, and in the second position said second spool prevents the pressurized air from flowing through said second air chamber; andan electrically operated solenoid valve including an air inlet adapted to be coupled with a source of the positively pressurized air, and at least one air outlet communicating with said air inlet, said air outlet positioned within said housing and communicating said at least one air passageway via the air supply device to direct the positively pressurized air to said at least one air passageway. 29. The adhesive dispensing valve of claim 28, wherein said housing is formed from a thermally insulating, nonmetallic material. 30. The adhesive dispensing valve of claim 28, wherein said electrically operated solenoid valve is thermally insulated from said adhesive dispensing portion. 31. The adhesive dispensing valve of claim 28, wherein said pneumatic actuator further comprises a movable diaphragm. 32. An adhesive dispensing valve, comprising: an adhesive dispensing portion including an inlet for receiving the adhesive and an outlet for discharging the adhesive, a valve member extending along a longitudinal axis and mounted for movement relative to said outlet between open and closed positions, and an adhesive passage communicating between said inlet and said outlet;an actuation portion including a housing with at least one air passageway, said housing formed from a thermally insulating, nonmetallic material and further containing a pneumatic actuator having a first and second surface configured to be exposed to pressurized air and each of the first and second surfaces having a different diameter, the pneumatic actuator operated by positively pressurized air flowing within said at least one air passageway to move said valve member at least to the open position, said pneumatic actuator being coupled to said valve member along the longitudinal axis such that said pneumatic actuator moves along the longitudinal axis with said valve member;an air supply device interacting with said at least one air passageway to control the flow of pressurized air to said pneumatic actuator, said air supply device comprising a first air chamber coupled with a first air passageway, a second air chamber coupled to a second air passageway, a first spool reciprocately mounted within the first air chamber, and a second spool reciprocately mounted within the second air chamber,wherein the pressurized air reciprocates said spools between first and second positions such that, in the first position, said first spool prevents the pressurized air from flowing through said first air chamber, and in the second position, said second spool prevents the pressurized air from flowing through said second air chamber; andan electrically operated solenoid coupled to said housing and operative to selectively control introduction of the positively pressurized air to the air supply device. 33. An adhesive dispensing valve, comprising: an adhesive dispensing portion including an inlet for receiving the adhesive and an outlet for discharging the adhesive, a valve member extending along a longitudinal axis and mounted for movement relative to said outlet between open and closed positions, and an adhesive passage communicating between said inlet and said outlet;an actuation portion including a housing with an air passageway, said housing formed from a thermally insulating, nonmetallic material and further containing a pneumatic actuator operated by positively pressurized air flowing within said air passageway to move said valve member at least to the open position, said pneumatic actuator being coupled to said valve member along the longitudinal axis such that said pneumatic actuator moves along the longitudinal axis with said valve member; andan electrically operated solenoid coupled to said housing and operative to selectively control introduction of the positively pressurized air to the air passageway,wherein said electrically operated solenoid further comprises a movable element positioned at least partially within said housing and operative to selectively control introduction of the positively pressurized air to the air passageway. 34. The adhesive dispensing valve of claim 33, wherein said pneumatic actuator further comprises a movable diaphragm. 35. An adhesive dispensing valve, comprising: an adhesive dispensing portion including an inlet for receiving the adhesive and an outlet for discharging the adhesive, a valve member extending along a longitudinal axis and mounted for movement relative to said outlet between open and closed positions, and an adhesive passage communicating between said inlet and said outlet;an actuation portion including a housing with at least one air passageway, said housing further containing a pneumatic actuator fixed to the housing, the pneumatic actuator operated by positively pressurized air flowing within said at least one air passageway to move said valve member at least to the open position, said pneumatic actuator being coupled to said valve member along the longitudinal axis such that said pneumatic actuator moves along the longitudinal axis with said valve member, said housing defining a first air chamber and a second air chamber, the first air chamber being coupled to a first air passageway, and the second air chamber being coupled to a second air passageway;an electrically operated solenoid coupled to said housing and including a movable element extending into said housing;a first spool reciprocately mounted within the first air chamber; anda second spool reciprocately mounted within the second air chamber,wherein the first and second spool are operatively coupled to the movable element such that movement of said movable element controls movement of said spools between first and second positions such that, in the first position, said first spool prevents the pressurized air from flowing through said first air chamber, and in the second position, said second spool prevents the pressurized air from flowing through said second air chamber. 36. The adhesive dispensing valve of claim 35, wherein movement of said movable element controls simultaneous movement of said first and second spools between respective first and second positions, said first position directing pressurized air to said pneumatic actuator to move said valve member to the open position and said second position directing pressurized air to said pneumatic actuator to move said valve member to the closed position. 37. The adhesive dispensing valve of claim 35, wherein said first spool is physically connected for movement with said movable element. 38. The adhesive dispensing valve of claim 35, wherein said first spool further comprises a pneumatic piston, and said movable element selectively controls a flow of pressurized air to said pneumatic piston thereby controlling movement of said first spool between said first and second positions. 39. The adhesive dispensing valve of claim 35, wherein said electrically operated solenoid is thermally insulated from said adhesive dispensing portion. 40. The adhesive dispensing valve of claim 35, wherein said pneumatic actuator further comprises a movable diaphragm.
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이 특허에 인용된 특허 (15)
Walsh John T. (Duluth GA) Hubbard Timothy M. (Canton GA) Osinaiya Taiwo T. (Stone Mountain GA), Apparatus for dispensing heated fluid materials.
Turner James J. (Amherst OH) McMillan Guy H. (Elyria OH) Pintelon Joseph A. E. (Lennik OH BEX) Waryu Joseph C. (Amherst OH) Kennon James L. (Amherst OH) Muller Peter E. (Aesch CHX), Modular can coating apparatus.
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