| 摘要 |
<p>The invention discloses a spray gun with sealing product, comprising a case, a tube support and an internal mechanism. The tube support comprises a push rod (32) connected to a twisting arm (34) located outside an upper compartment (26). The push rod (32) is actuated by a gear shaft (38) which is held in place by a bearing (67) surrounded by balls (69) contained in a main triangular flange (70) and located in a receptacle piece (71) integrated in the upper compartment (28). The push rod (32) has inclined surfaces and the bearing central part is covered with coupling surfaces that overlap the inclined surfaces of the screw. Rotation of a large gear moves the screw forward and the twisting arm prevents the screw from turning. A pivoting case disengages the large gear and enables manual withdrawal of the screw after the sealing product has been pushed.</p> |
