Unlock instant, AI-driven research and patent intelligence for your innovation.

Valve seat for dispenser

A distributor and valve seat technology, applied in the field of ejector-type distributors, can solve problems such as difficulty in controlling pressure

Inactive Publication Date: 2017-05-17
ILLINOIS TOOL WORKS INC
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One disadvantage associated with injector type systems is that it is difficult to control the pressure in the chamber 14 in the space surrounding the valve seat 22

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Valve seat for dispenser
  • Valve seat for dispenser
  • Valve seat for dispenser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] For purposes of illustration only, and not limitation of generality, the present disclosure will now be described in detail with reference to the accompanying drawings. The disclosure is not limited in its application to the details of construction and the arrangement of parts set forth in the following description or illustrated in the drawings. The disclosure is capable of other embodiments and of being practiced or being carried out in various ways. Also, the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of "including, comprising", "having", "containing", "involving" and variations thereof herein is meant to include the items listed thereafter and their equivalents, as well as additional project.

[0021] In a typical application, a viscous material (e.g., adhesive, encapsulant, epoxy, solder paste, underfill, etc.) or semi-viscous material (e.g., solder flux, etc.) , printed circuit boar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A dispensing head includes a housing defining an interior chamber and an inlet formed in the chamber. The inlet supplies the chamber with viscous material under pressure from a source of material. The dispensing head further includes a piston disposed in the chamber and a nozzle secured to the housing at a lower end of the chamber. The nozzle has an orifice extending in a direction co-axial with the chamber, with one of the housing and the nozzle defining a bottom wall of the chamber. The dispensing head further includes a valve seat provided on the bottom wall of the chamber. The valve seat includes a body having a valve seat surface disposed above the bottom wall of the chamber, with the body having an opening co-axial with the orifice of the nozzle to enable viscous material to flow through the valve seat surface during a dispensing operation.

Description

[0001] BACKGROUND OF THE DISCLOSURE [0002] 1. Technical field [0003] The present invention relates generally to methods and apparatus for dispensing viscous materials on substrates, such as printed circuit boards, and more particularly, to a sprayer-type dispenser capable of dispensing small amounts of viscous material on a substrate. [0004] 2. Background technology [0005] There are several types of prior art dispensing systems or dispensers for dispensing metered quantities of liquids or pastes for a variety of applications. One such application is the assembly of integrated circuit chips and other electronic components onto circuit board substrates. In this application, an automated dispensing system is used to dispense dots of liquid epoxy or solder paste or some other related material on a circuit board. Automated dispensing systems are also used to dispense threads of underfill and encapsulants, which mechanically secure components to circuit boards. Underfill m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/02B05C11/10
CPCB05C5/0225B05C11/1034B05B1/08H05K3/3478
Inventor 约翰·阿里阿特·卡瓦哈尔
Owner ILLINOIS TOOL WORKS INC