Liquid material ejection device
A technology of liquid material and discharge port, which is applied in the direction of liquid spraying device, device for coating liquid on the surface, spraying device, etc., to achieve the effect of lowering the center of gravity and good maintainability
Active Publication Date: 2018-08-31
MUSASHI ENG INC
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- Application Information
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Problems solved by technology
The device based on this discharge principle is not suitable for high-speed continuous discharge of more than hundreds of shots per second because of the sliding friction between the side peripheral surface of the plunger and the inner peripheral surface of the cylinder hole.
Method used
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Embodiment Construction
[0043] The present invention relates to a liquid material discharge device that discharges low-viscosity liquid materials such as water, solvents, and medicines to relatively high-viscosity liquid materials such as solder paste, silver paste, and adhesives in a small amount and accurately. Hereinafter, an example of an embodiment for implementing the present invention will be described.
[0044] "Embodiment Example 1"
[0045]
[0046] figure 1 It is a side cross-sectional view of the liquid material discharge device 1 according to the first embodiment.
[0047] The liquid material ejection device 1 of the first embodiment relates to a spray type ejection device, which has a base 10, an arm drive device 20, an arm 30, a plunger 50, an infusion member 60, and a nozzle unit 70 as main components, and The liquid material is flying and spit out as droplets.
[0048] In addition, for convenience of description, the nozzle unit 70 side is sometimes referred to as "lower", the arm 30 side i...
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Problem: To provide a liquid material ejection device in which a plunger can be efficiently accelerated, the device having a low center of gravity and satisfactory maintainability, and a coating device in which the liquid material ejection device is mounted. Solution: The liquid material ejection device is provided with: a liquid chamber which communicates with an ejection opening and to which liquid material is supplied; a plunger of which a tip-end portion having a diameter smaller than the liquid chamber is moved back and forth in the liquid chamber; an elastic member which urges the plunger upward; an arm disposed so as to extend in a substantially horizontal direction; an arm drive device providing a driving source for operating the arm; and a base member on which the arm drive deviceis disposed. The liquid material ejection device is further provided with a pivotal mechanism unit which is connected to the arm drive device and which pivotally supports the arm drive device and thearm. The arm drive device is provided with a plurality of actuators disposed in a longitudinal direction of the arm. The arm is provided with a pressing portion which presses the plunger downward. The plunger is provided with an abutment portion pressed by the pressing portion. The plunger executes a linear reciprocating motion as the arm is pivotally moved. The coating device incorporates the liquid material ejection device.
Description
Technical field [0001] The present invention relates to a liquid material discharge device including a plunger, an actuator, and a displacement amplifying mechanism that perform reciprocating motion in a liquid chamber communicating with a nozzle, and a coating device equipped with the discharge device. Here, the "plunger" described in this specification includes, for example, rod-shaped members called needles, rods, and pistons. Background technique [0002] Various techniques have been proposed to eject a small amount of liquid material in the form of droplets by using a plunger that moves back and forth in a liquid chamber connected to a nozzle. As a drive source for moving the plunger, actuators using motors, air, piezoelectric elements, etc. are often used. As a discharge device that uses air pressure as a driving source, for example, Patent Document 1 related to the applicant discloses a discharge device that opens the discharge port by the retracting action of a plunger r...
Claims
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IPC IPC(8): B05C5/00F04B9/00
CPCB05C5/02F04B17/003F04B9/06F04B9/00B05C5/0225B05C11/1034F04B43/046B05C5/0291B05B17/0653B05C5/0237F04B9/04
Inventor 生岛和正
Owner MUSASHI ENG INC