Valve impact type dispensing pump
AssigneeProtec Co., Ltd.
InventorsSeung Min Hong, Il Kang
Life of this patent
Estimating the term…
Abstract
A dispensing pump, and more particularly, a valve impact type dispensing pump that may be used in a process of manufacturing an electronic product and may dispense an accurate amount of a liquid, such as a liquid synthetic resin, at high speed. The valve impact type dispensing pump can descend a valve rod at high speed and thus can dispense a liquid with high viscosity at high speed. The valve impact type dispensing pump can dispense an accurate amount of a liquid at high speed. Also, the valve impact type dispensing pump can dispense a liquid having high viscosity at high speed due to a fast descending speed of a valve rod.
Claims20
A method of dispensing liquid, the method comprising:
- providing a liquid dispensing pump which comprises:
- a cam rotatable about a rotational axis and comprising a cam surface around the rotational axis,
- a cam follower biased toward the cam surface and configured to travel along the cam surface for reciprocating movement along a first direction,
- an operation rod coupled to the cam follower and configured to generate a stroke along the first direction based on the reciprocating movement of the cam follower,
- a valve assembly comprising a valve and a nozzle, and
- a gap member integrated with the operation rod and coupled to the valve with a gap therebetween such that during a first part of the stroke the gap member is movable relative to the valve that does not transfer the stroke of the operation rod to the valve and that during a second part of the stroke following the first part the gap member contacts the valve to transfer the stroke of the operation rod to move the valve toward the nozzle;
- supplying liquid to the valve assembly;
- and
- rotating the cam about the rotational axis to cause the cam follower to travel along the cam surface for reciprocating movement thereof along the first direction,
- wherein as the gap member moves in the first direction toward the nozzle, the gap member first moves relative to the valve within a distance of the gap along the first direction such that the movement of the gap member does not transfer any force to the valve and subsequently the gap member contacts the valve and pushes the valve toward the nozzle.
A method of dispensing liquid, the method comprising:
- providing a liquid dispensing pump which comprises:
- a cam rotatable about a rotational axis and comprising a cam surface around the rotational axis,
- a cam follower biased toward the cam surface and configured to travel along the cam surface for reciprocating movement along a first direction,
- an operation rod coupled to the cam follower and configured to generate a stroke along the first direction based on the reciprocating movement of the cam follower,
- a valve assembly comprising a valve and a nozzle, and
- a gap member interconnecting the operation rod and the valve with a gap between the operation rod and the valve such that during a first part of the stroke the operation rod is movable relative to the valve that does not transfer the stroke of the operation rod to the valve and that during a second part of the stroke following the first part the operation rod contacts the valve to transfer the stroke of the operation rod to move the valve toward the nozzle,
- wherein the operation rod the operation rod surface at its one end and the valve comprises a valve surface, and the operation rod surface moves toward the valve surface during the first part of the stroke until the operation rod surface contacts the valve surface;
- supplying liquid to the valve assembly;
- and
- rotating the cam about the rotational axis to cause the cam follower to travel along the cam surface for reciprocating movement thereof along the first direction,
- wherein as the operation rod moves in the first direction toward the nozzle, the operation rod first moves relative to the valve within a distance of the gap along the first direction such that the movement of the operation rod does not transfer any force to the valve and subsequently the operation rod contacts the valve and pushes the valve toward the nozzle.
Dependencies are inferred from the claim text.