| 摘要 |
Extruder for dope and other cartridge material by means of base thrust, of the type having a power-operated gun form to which tubes extremity is fixed the cartridge or cartridge carrier, and which has a trigger command which exits or re-enters a piston pushed by said tube, that pushes the base of said cartridge causing the material contained in it to exit from an end spout for application, of which said pushing piston (3), develops telescopically forwards by means of: a first bush threaded internally (310), axially static, and rotatably frictioned (11-311), within the tube of the gun (15) of gun (1); a second bush of telescopic prolongation (32) having an internal thread (320) and an external thread (321) that connects with said internal thread (310) of said bush (31), in order that when it rotates it is obliged to move axially in respect to the first bush; a third bush of telescopic prolongation (33) threaded externally (331) and with internal slot to receive an internal telescopic rotational arm of rotational guide (321-302-301-30) that, keyed in a base motorization (2) within the tube (15) of the gun (1), rotates said third bush and as a consequence of said threaded connections, it develops axially or re-enters telescopically, while on overcoming a certain resistance, the first threaded bush, overcoming the respective frictioning, turns without necessarily having an axial movement. |
