摘要:
Jetting dispensers and methods of non-contact dispensing a hot melt adhesive onto a substrate. The method may include jetting a plurality of droplets of the hot melt adhesive from a nozzle outlet toward the substrate in a direction of travel. Each droplet has a droplet length approximately aligned with the direction of travel and a droplet width shorter than the droplet length. The jetting is controlled such that each of the droplets does not collapse into a spherical-shaped droplet during flight from the nozzle outlet to the substrate. The nozzle outlet may be heated to a first temperature, and the method may further include rapidly heating each droplet of the hot melt adhesive to a second temperature higher than the first temperature upon release from the nozzle outlet.
摘要:
A liquid dispenser gun (14) for mixing first and second liquid components of a two-component mixture (11) and dispensing the two-component mixture (11) includes a gun body (78), a mixing manifold (82), and a nozzle plate (84). The gun body (78) includes a gun body fluid passage (94) in fluid communication with gun body inlets (38, 50, 56) and the mixing manifold (82). The gun body fluid passage (94) is a groove in a bottom surface (79) of the gun body (78) having a generally non-linear shape such that the second component has a generally laminar flow through the gun body fluid passage (94) while a flushing component may be introduced in the gun body fluid passage (94) in a manner to produce turbulence in the flushing component.
摘要:
A liquid dispenser gun (14) for mixing first and second liquid components of a two-component mixture (11) and dispensing the two-component mixture (11) includes a gun body (78), a mixing manifold (82), and a nozzle plate (84). The gun body (78) includes a gun body fluid passage (94) in fluid communication with gun body inlets (38, 50, 56) and the mixing manifold (82). The gun body fluid passage (94) is a groove in a bottom surface (79) of the gun body (78) having a generally non-linear shape such that the second component has a generally laminar flow through the gun body fluid passage (94) while a flushing component may be introduced in the gun body fluid passage (94) in a manner to produce turbulence in the flushing component.
摘要:
Jetting dispensers and methods of non-contact dispensing a hot melt adhesive onto a substrate. The method may include jetting a plurality of droplets of the hot melt adhesive from a nozzle outlet toward the substrate in a direction of travel. Each droplet has a droplet length approximately aligned with the direction of travel and a droplet width shorter than the droplet length. The jetting is controlled such that each of the droplets does not collapse into a spherical-shaped droplet during flight from the nozzle outlet to the substrate. The nozzle outlet may be heated to a first temperature, and the method may further include rapidly heating each droplet of the hot melt adhesive to a second temperature higher than the first temperature upon release from the nozzle outlet.
摘要:
A manifold for a liquid material dispenser has a unitary manifold body with process air and liquid material passages formed therethrough. Heaters for heating the process air and liquid material are both coupled directly to the manifold body and cooperate to simultaneously heat both the air and liquid material. The air and liquid material heaters may be arranged in either a generally vertical orientation, or a horizontal orientation with respect to the manifold body. In one embodiment, the process air heater includes a cylindrical member which is substantially exposed to the process air to optimize heat transfer from the cylindrical member to the process air.
摘要:
A dispensing valve is provided for dispensing liquid from a cartridge. The valve includes a valve body that is adapted to receive at least a portion of the cartridge therein. A valve member is disposed in the valve body and is adapted for fluid communication with the cartridge. A valve seat element is disposed in the valve body and includes a liquid chamber that is in communication with the liquid outlet and is mounted for reciprocating movement between a closed position engaged with the valve member to prevent liquid from exiting the liquid outlet and an open position disengaged from the valve member to allow liquid to flow from the liquid chamber through the liquid outlet. The valve body may include a longitudinal axis and a receive bore extending along the longitudinal axis, with the liquid outlet being substantially co-axial with the receiving bore.
摘要:
A dispensing valve is provided for dispensing liquid from a cartridge. The valve includes a valve body that is adapted to receive at least a portion of the cartridge therein. A valve member is disposed in the valve body and is adapted for fluid communication with the cartridge. A valve seat element is disposed in the valve body and includes a liquid chamber that is in communication with the liquid outlet and is mounted for reciprocating movement between a closed position engaged with the valve member to prevent liquid from exiting the liquid outlet and an open position disengaged from the valve member to allow liquid to flow from the liquid chamber through the liquid outlet. The valve body may include a longitudinal axis and a receive bore extending along the longitudinal axis, with the liquid outlet being substantially co-axial with the receiving bore.
摘要:
A spring-biased filter assembly for a liquid dispenser is disclosed that permits ready removal of a filter assembly from a filter housing. The filter housing includes a liquid inlet, a liquid outlet, and a liquid passageway therebetween. The filter housing also has an opening in communication with the liquid passageway. The filter assembly comprises a closure element positioned in the opening and releasably coupled to the filter housing through movement between connected and disconnected positions with respect to the filter housing. A filter element is positioned in the liquid passageway and coupled to the closure element. A biasing member is coupled to the closure element and the filter element and biases the closure element into the connected position.
摘要:
A system for providing the ability to obtain consumption data from a communication device used to transmit accumulated data from the meter register. The system includes a programming port formed as part of the communication device. The programming port includes the programming coil that allows the accumulation data received from the meter register to be read by an interrogation device. Further, the programming coil allows programming information to be transferred to the communication device from the interrogation device. The system can also include a reading module coupled to the programming port of the communication device through an inductive coupling. The reading module can extend through a pit lid such that the reading module can be accessed without removing the pit lid.