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Positive displacement dispenser and method for dispensing discrete amounts of liquid

A dispenser, liquid technology, applied in the direction of the surface coating liquid device, measuring capacity, liquid injection device, etc., can solve the problem of affecting the deposition pattern, leaking liquid, etc.

Active Publication Date: 2013-05-08
NORDSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Subsidiary formation and / or undesired fogging may negatively affect the desired deposition pattern on the intended substrate
Lastly, leaking liquid from the outlet of the jet dispenser between dispense cycles can be the problem

Method used

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  • Positive displacement dispenser and method for dispensing discrete amounts of liquid
  • Positive displacement dispenser and method for dispensing discrete amounts of liquid
  • Positive displacement dispenser and method for dispensing discrete amounts of liquid

Examples

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Embodiment Construction

[0025] figure 1 and figure 2A dispenser 10 constructed in accordance with one example embodiment is illustrated. It should be noted that various spatial and directional references, such as horizontal, vertical, up, down, etc., are used to describe the drawings and are done for convenience and clarity of description only. It will be appreciated that the dispenser 10 can be used in a variety of orientations and can dispense a variety of liquids with a wide range of viscosities, such as alcohol, which is less viscous than water, and epoxy, which is much more viscous than water. The dispenser 10 generally includes a dispensing portion 10a and an actuator portion 10b, and these portions are associated with a dispenser body 12 in the illustrated embodiment. The dispenser 10 also includes a container or reservoir 14 of liquid 15 to be dispensed. Container 14 is removably coupled to dispenser body 12 . Container 14 includes a first end 16 and a second end 18 . The first end 16 i...

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PUM

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Abstract

The present invention relates to positive displacement dispenser and method for dispensing discrete amounts of liquid. A dispenser for applying small amounts of liquid to a substrate is provided. The dispenser includes a dispenser body, an actuator in the dispenser body, and a dispensing element including a dispensing element body removably coupled to the dispenser body. A valve stem is mounted for reciprocating movement within the dispensing element body. Additional aspects include a deformable valve seat, a deformable and resilient valve stem tip and a method of applying liquid in discrete amounts to a substrate.

Description

technical field [0001] The present invention generally relates to liquid dispensers, such as positive displacement pumps and jet dispensers, designed to dispense precise discrete quantities of liquid. Background technique [0002] Many types of industrial liquid dispensing applications have requirements that involve dispensing small discrete quantities of liquid while achieving high accuracy, uniformity and / or repeatability during continuous and frequent rapid dispensing cycles. Positive displacement pumps are used to achieve at least some of these purposes. However, a variety of applications require dispense volumes, cycle times, and other process parameters that cannot be met by typical positive displacement pumps. On the other hand, equipment capable of meeting these other process parameters cannot dispense with the required accuracy, repeatability, and / or uniformity. For example, a dispenser may utilize an element, such as a stepper drive, that is actuated by air press...

Claims

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Application Information

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IPC IPC(8): B05B7/24B05B12/02
CPCB05C5/0291B05C11/1034G01F11/029G01F11/021B05C5/0225B05C5/0204B05B12/02B05C11/10
Inventor 戴维·J·邓拉普劳伦斯·B·赛义德曼爱德华·C·泰勒
Owner NORDSON CORP
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