Glue gun
Assignee9T Labs AG
InventorsMartin Eichenhofer, Florian Eichenhofer
Life of this patent
Estimating the term…
Abstract
A glue gun, comprising: a housing for storing strands including thermoplastic plastic, a heating device, an outlet nozzle for discharging heated strands from the glue gun, an extrusion unit for shaping extruded strand, a conveying device for conveying strands to the heating device and through the outlet nozzle. Embodiments of the disclosure make it possible to store glue in the glue gun even in large amounts and to join the parts to each other with a strand of fiber-reinforced plastic with adhesive bonds in such a way that the adhesive bonds can withstand even large forces. Various glue guns of the disclosure include a pultrusion unit for consolidating fibers and plastic.
Claims20
A glue gun for a strand including a thermoplastic having a melting temperature, comprising:
- a heating device,
- a pultrusion unit having a pultrusion channel for consolidating the strand,
- a conveying device configured to convey the strand in a conveying direction,
- an extrusion unit having an extrusion channel for extruding and shaping the strand,
- an outlet nozzle for discharging the strand from the glue gun,
- a pultrusion channel temperature sensor,
- an extrusion channel temperature sensor, and
- an activating unit connected to a control unit, the activating unit configured to control the heating device and the conveying device, and for receiving inputs from the pultrusion channel temperature sensors and the extrusion channel temperature sensor,
- wherein the control unit is configured to activate the conveying device if a first temperature in the pultrusion channel and a second temperature in the extrusion channel are sufficient for melting the thermoplastic plastic.
A method for operating a glue gun, the glue gun comprising:
- a heating device,
- a pultrusion unit comprising a pultrusion channel for consolidating a strand including thermoplastic plastic having a melting temperature,
- a conveying device for conveying the strand in a conveying direction from the heating device and through an outlet nozzle for discharging the strand from the glue gun,
- an extrusion unit comprising an extrusion channel for shaping the strand, which strand is to be extruded,
- a pultrusion channel temperature sensor,
- an extrusion channel temperature sensor, and
- an activating unit connected to a control unit for controlling the heating device and the conveying device and for receiving inputs from the pultrusion channel temperature sensor and the extrusion channel temperature sensor;
- the method comprising:
- feeding the strand to the pultrusion unit,
- heating the strand in the pultrusion unit,
- conveying the strand by the conveying device from the pultrusion unit to the extrusion unit,
- heating the strand in the extrusion unit,
- detecting a first temperature in the pultrusion channel and a second temperature in the extrusion channel, and
- forming a cross-sectional shape of the strand in the extrusion unit;
- wherein conveying the strand by the conveying device is activated upon activation of the activating unit if the first temperature detected in the pultrusion channel and the second temperature detected in the extrusion channel are sufficient for melting the thermoplastic plastic.
Dependencies are inferred from the claim text.