Jetting devices

Abstract

Jetting devices and methods for dispensing a fluid material from a fluid supply. A jetting device includes a fluid module configured to be coupled with the fluid supply and to dispense the fluid material. The fluid module includes a valve seat and a valve element configured to move relative to the valve seat over a stroke length, and a valve stop configured to position the valve element relative to the valve seat for determining the stroke length. The jetting device further includes a drive module configured to actuate the fluid module and includes a drive pin configured to move the valve element toward the valve seat. The drive pin is configured to be rotated to cause rotation of the valve stop for adjustment of the stroke length. The drive pin may be rotated by a rotation device comprising a motor.

Description

RELATED APPLICATIONS[0001]This application is a divisional of U.S. patent application Ser. No. 13 / 795,581, filed Mar. 12, 2013, and published as U.S. Patent App. Pub. No. 2014 / 0263738 on Sep. 18, 2014, the entire disclosure of which is fully incorporated herein by reference.TECHNICAL FIELD[0002]The invention relates generally to the application of fluid materials and, in particular, to devices for use in jetting fluid materials.BACKGROUND[0003]Jetting devices may require different types of dispensing valves, or dispensing valve components, that are dedicated to different types of dispensing applications in electronic industry applications in which minute amounts of a fluid material are applied onto a substrate. A “jetting device” is a device which ejects, or “jets”, a droplet of material from a dispenser nozzle to land on a substrate, and wherein the droplet disengages from the dispenser nozzle before making contact with the substrate. Thus, in a jetting type dispenser, the droplet ...

AI Technical Summary

Benefits of technology

The invention describes a jetting device that can dispense fluid material from a supply. The device includes a fluid module with a valve seat, a valve element, and a valve stop that can adjust the stroke length of the valve. The device also includes a drive module with a drive pin that can move the valve element towards the valve seat. The technical effect of this invention is a device that allows for precise control over the amount of fluid dispensed, making it easier to control the final product. Additionally, the invention includes a method for adjusting the stroke length of the valve to ensure the desired amount of fluid is dispensed.

Problems solved by technology

In conventional jetting devices, the valve element and the valve seat may tend to wear over time and with usage.

Changes in the size, shape, or weight of the dispensed fluid material are generally disfavored, as such changes disrupt the consistency of products treated with the jetting devices.

Moreover, conventional jetting devices are difficult to clean and maintain because their components are not constructed in a manner that allows simply disassembly and maintenance.

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