US 2015/0306625 A1Published application

Method for dispensing an adhesive

AssigneeNordson Corporation

InventorsJohn M. Riney, Joel E. Saine

Life of this patent

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Abstract

A dispensing module and method of dispensing an adhesive includes a dispenser body having a valve element and a nozzle. The nozzle includes a nozzle member, a sealing zone, and a valve seat. The nozzle member includes a liquid passageway having a bore, a cylindrical surface, a second converging surface, and a shoulder. The sealing zone is defined by the cylindrical surface and extends from the bore toward the shoulder and engages the valve element to close a first volume of the liquid passageway from the inlet. The valve seat is defined by the shoulder and the second converging surface and has a circular line of contact that engages the valve element to close a second volume of the liquid passageway from the inlet. The first volume reduces to the second volume as the valve element moves distally along the sealing zone for discharging the adhesive.

Claims3

Dependent claims

A method of dispensing an adhesive bead from a dispensing module having a nozzle, the nozzle including an inlet, an outlet, and a liquid passageway extending therebetween, the method comprising:

moving the valve element from the proximal position to a sealing zone and closing a first volume of the liquid passageway from the inlet to cease discharging the first portion of the adhesive bead;
moving the valve element distally along the sealing zone toward a distal position and reducing the first volume of the liquid passageway to force additional adhesive from the outlet and discharge a second portion of the adhesive bead;
engaging the valve element against a valve seat in the distal position to close a second volume of the liquid passageway from the inlet to cease discharging the second portion of the adhesive bead;
and
inserting at least a portion of a needle tip into a discharge passageway that defines the outlet for inhibiting clogging of the adhesive within the nozzle.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/794,205Filed 8 Jul 2015
Priority: 31 Oct 2013
Published: 29 Oct 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B05C 5/0229
Characterised by flow controlling means, e.g. valves, located proximate the outlet: the valve being a gate valve or a sliding valve
B05B 15/5225
The cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the…:…
B05C 5/0225
The liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in…:…
B05C 5/0237
Characterised by flow controlling means, e.g. valves, located proximate the outlet: fluid actuated valves

Family

Application14/068,946Division · filed 31 Oct 2013
Application14/794,205Division
US 2015/0115000 A1Published application
US 9,108,214 B2Related patent
US 9,475,082 B2Related patent
US 2015/0306625 A1This patent

From the US filing history. Foreign family members aren’t listed.