A hot melt glue dispenser device for dispensing a continuous or interrupted melt glue wire starting from a solid glue wire that is fed in input to said dispenser device, comprising: - a melter body comprising an inner passage having an inlet for said solid glue wire, and an opposite outlet for said melt glue wire, said melter body having heater members to melt the solid glue wire along the path between said inlet and said outlet; - a dragging mechanism comprising an inner passage (47, 48) having an inlet and an outlet for said solid glue wire, said dragging mechanism being suitable to apply a dragging force to said solid glue wire to transport said solid glue wire from said inlet to said outlet through said inner passage (47,48); - a spacer member interposed between said melter body and said dragging mechanism, defining an inner conduit suitable to make the solid glue wire to pass therein between the outlet of the dragging mechanism and the inlet of the melter body, said spacer member having a first end connected to said outlet of the dragging mechanism and a second end connected to said inlet of the melter body; - said spacer member being made of a thermally insulating material so as to prevent the heat transferring from the melter body to the dragging mechanism; - a connection structure to which both said melter body and said dragging mechanism are secured, said connection structure being configured to prevent a relative movement between said dragging mechanism and said melter body, and vice versa, the connection structure between the dragging mechanism and the melter body comprising a structural bracket on which the melter body and the dragging mechanism are rigidly secured, said structural bracket being configured to be mountable to a fixed portion or a mobile portion of a gluing machine; the connection structure allowing the entire dispenser device to be a single, independent and self-standing, autonomous, compact, easily maneuverable, replaceable, storable assembly, and which is applicable to any machine having a hold portion on which it can be mounted; - a dispensing nozzle mounted directly to the melter body at the outlet of the melter body; - an opening/closure valve of the flow of melt glue wire through the dispensing nozzle; such opening/closure valve being a needle valve, having a pin which, in a first position closes the exiting flow of the melt glue and, in a second position opens the exiting flow of melt glue; such valve being mounted to the melter body so that the pin is aligned with the outlet hole of the nozzle, and passes through a pin passage inside the melter body, said pin passage being partially different from said inner passage, and being in communication with the inner passage exclusively at the outlet of the melter body. - a melter body comprising an inner passage having an inlet for said solid glue wire, and an opposite outlet for said melt glue wire, said melter body having heater members to melt the solid glue wire along the path between said inlet and said outlet; - a dragging mechanism comprising an inner passage (47, 48) having an inlet and an outlet for said solid glue wire, said dragging mechanism being suitable to apply a dragging force to said solid glue wire to transport said solid glue wire from said inlet to said outlet through said inner passage (47,48); - a spacer member interposed between said melter body and said dragging mechanism, defining an inner conduit suitable to make the solid glue wire to pass therein between the outlet of the dragging mechanism and the inlet of the melter body, said spacer member having a first end connected to said outlet of the dragging mechanism and a second end connected to said inlet of the melter body; - said spacer member being made of a thermally insulating material so as to prevent the heat transferring from the melter body to the dragging mechanism; - a connection structure to which both said melter body and said dragging mechanism are secured, said connection structure being configured to prevent a relative movement between said dragging mechanism and said melter body, and vice versa, the connection structure between the dragging mechanism and the melter body comprising a structural bracket on which the melter body and the dragging mechanism are rigidly secured, said structural bracket being configured to be mountable to a fixed portion or a mobile portion of a gluing machine; the connection structure allowing the entire dispenser device to be a single, independent and self-standing, autonomous, compact, easily maneuverable, replaceable, storable assembly, and which is applicable to any machine having a hold portion on which it can be mounted; - a dispensing nozzle mounted directly to the melter body at the outlet of the melter body; - an opening/closure valve of the flow of melt glue wire through the dispensing nozzle; such opening/closure valve being a needle valve, having a pin which, in a first position closes the exiting flow of the melt glue and, in a second position opens the exiting flow of melt glue; such valve being mounted to the melter body so that the pin is aligned with the outlet hole of the nozzle, and passes through a pin passage inside the melter body, said pin passage being partially different from said inner passage, and being in communication with the inner passage exclusively at the outlet of the melter body.