| 摘要 |
<p>MELT DISPENSERS A hot melt glue gun is described and claimed having a rod feeding mechanism (14) comprising a trigger (50) arranged to drive clamping means to grip a rod of adhesive and to move the rod towards a melt chamber (17) of the gun. The clamping means comprises a carriage (42) movable towards and away from the melt chamber and having a shaped portion (110) to accept a rod to be fed. The clamping means also comprises, pivoted on the carriage, a clamp member having a clamping arm portion (71) for gripping the rod against the shaped portion, and a crank arm portion (70). The crank arm portion has an operating portion (49) having a convex surface (64) arranged to co-operate with pressure means (207) of pivotally mounted connecting means (52). The connecting means is positioned to be operated by the trigger. By virtue of the disposition of the pivots and the clamping arm and of the shaping of the operating portion of the crank arm, there is brought about an improved usage of triggering effort to feed the rod. The clamping arm portion is disposed and shaped to grip the rod with reduced disfiguring and distortion of the rod.</p> |
