Abstract:
A melter for a melt system includes a tank, a vibration generating device, and a heater. The tank has a wall for containing a hot melt adhesive, and the vibration generating device vibrates the wall. The heater transfers heat to the tank.
Abstract:
A hot melt system is described which includes a container of hot melt pellets, a melter, a feed system, a pump, and a dispensing system. A pressure relief system is built around the pump, which may redirect liquefied adhesive from the pump outlet to the pump inlet.
Abstract:
The induction exhaust has an exhaust manifold 16 and a muffler 22. In the instant invention, warm ambient air is drawn into the muffler 22. Heat from this external source is conducted through the finned manifold 16 to melt ice that can form inside the manifold 16 during the exhaust cycle. The exhaust manifold 16 bolts to the side of the air motor air valve 14 and serves to direct, muffle and diffuse the air motor exhaust using a deflection plate, a diffraction plate and an expansion chamber is provided in the manifold to direct the exhaust out of the air valve and down the center of the muffler 22.
Abstract:
A pump system (10) for pumping a fluid includes a motor housing (46), a motor (36), a rod (50), a positive displacement pump (32), a position sensor (52), and a controller (18). The motor (36) is located within the motor housing (46). The rod (50) is connected to and driven by the motor (36) and the positive displacement pump (32) for moving a fluid is driven by the rod (52). The position sensor (52) produces a rod position signal that is a function of a position of the rod, and the controller produces a drive signal for driving the motor (36) as a function of the rod position signal.
Abstract:
A pumping system comprises a pump, first and second channels, a valve, and an actuator. The pump pumps fluid according to a pumping cycle. The first channel has a first fluid flow orifice with a first diameter, while the second channel has a second fluid flow orifice with a second diameter greater than the first diameter. The valve is configured to direct fluid from the pump to the first channel in a first state, and to the second channel in a second state. The actuator is configured to switch the valve into the first state during a high pressure period of the pumping cycle, and into the second state during a low pressure period of the pumping cycle.
Abstract:
A hot melt dispensing system includes a hot melt tank having a tank outlet, a flow passage extending from the tank outlet, and a check valve. The flow passage has a first end and a second end. The first end is adjacent the tank outlet. The check valve is positioned at the first end of the flow passage.
Abstract:
A method of operating a melt system includes melting, flowing, pumping, and replenishing. Hot melt pellets are melted in channels of a melter into a melt liquid that has an upper surface that represents a melt level of the melt liquid in the melter. The melt liquid is flowed downward through the channels to a melt system outlet. The melt liquid is pumped from the melt system outlet. The melter is replenished with hot melt pellets until the melt level is proximate to a top end of the channels.
Abstract:
A heating system includes an air motor with an exhaust; a pump for a hot melt dispensing system and driven by the air motor; and a shroud enclosing at least a portion of the air motor and the pump to direct heat from the pump to the exhaust of the air motor.
Abstract:
A hot melt dispensing system includes a hopper, a delivery line, a shaker, and an air supply line. The hopper stores hot melt pellets and the delivery line delivers the hot melt pellets from the hopper. The shaker agitates the hot melt pellets. The air supply line supplies air that flows through the shaker to produce vibration and additionally flows through the delivery line to create a vacuum that draws the hot melt pellets through the delivery line.
Abstract:
A priming piston reciprocating pump 10 has piston guide 14 which encircles piston 16 and is provided a bearing member 22 in the inner diameter of the upper end of the guide 14. The bearing 22 is formed of 25% carbon-filled PTFE and may be fitted without tools into the aforementioned ID. Such a bearing 22 allows a negligible clearance to be utilized between the bearing 22 and the piston 16.