Patent classifications
B01F5/14
Applicator having active backpressure control devices
The present disclosure describes a method and system for controlling dispensing of adhesive from an applicator. The method includes pumping adhesive from a plurality of pump assemblies to a plurality of dispensing modules and measuring current draw from each of the plurality of pump assemblies. The method also includes determining an adjustment to an operating speed of each of the plurality of pump assemblies individually based on their respective current draws and adjusting the operating speed of each of the plurality of pump assemblies individually.
Applicator with diverter plate
An applicator for dispensing multiple adhesives on a substrate is disclosed. The applicator includes a manifold that includes a first dispensing module and a second dispensing module. The first dispensing module has a first inlet and a first nozzle. The first inlet receives a first adhesive and the first nozzle applies the first adhesive to the substrate. The second dispensing module is adjacent the first dispensing module and has a second inlet and a second nozzle. The second inlet receives a second adhesive that is different from the first adhesive. The second nozzle applies the second adhesive to the substrate.
Active adhesive recirculation regulation
An applicator for dispensing adhesive is disclosed. The applicator includes a manifold, at least one dispensing module coupled to the manifold, a supply channel configured to contain at least a portion of the adhesive, a recirculation channel configured to contain at least a portion of the adhesive, and a recirculation pump assembly connected to the manifold. The recirculation pump assembly includes an inlet in fluid communication with the recirculation channel, an outlet in fluid communication with the supply channel, a gear assembly, and a drive motor coupled to the gear assembly and operable to pump the adhesive, where the drive motor is configured to operate at an adjustable number of revolutions per minute (RPM). The recirculation pump assembly can be configured to move at least a portion of the adhesive from the recirculation channel to the supply channel, such that a first pressure of the adhesive in the recirculation channel is substantially equal to a second pressure of the adhesive in the supply channel.
Applicator with diverter plate
An applicator for dispensing adhesive and a method of diverting flow in an applicator are disclosed. The applicator includes a plurality of pump assemblies each having an inlet and an outlet, a plurality of dispensing modules each having an inlet, and a flow diverter plate in fluid communication with the plurality of pump assemblies. The flow diverter plate defines a body having a first surface in fluid communication with the plurality of pump assemblies, a second surface opposite the first surface in fluid communication with the plurality of dispensing modules, and a plurality of diverter passages extending from the first surface to the second surface. Each of the plurality of diverter passages has a first opening on the first surface and a second opening on the second surface, and the first opening is in fluid communication with the outlet of one of the plurality of pump assemblies, and the second opening is in fluid communication with the inlet of at least one of the plurality of dispensing modules.