| 摘要 |
A die assembly ( 10 ) having a first die part ( 12 ), which includes a first lip ( 16 ) that, in combination with a second lip ( 18 ), defines a feed gap ( 20 ). The first die part ( 12 ) also includes a rear portion ( 22 ), a front portion ( 24 ), a slot ( 26 ) between these portions ( 22,24 ), and a gap-setting device ( 28 ) that is mechanically movable within the slot ( 26 ) so as to enable the movement of the front portion ( 24 ) relative to the rear portion ( 22 ). The first lip ( 16 ) is carried by the front portion ( 24 ), whereby movement of the front portion ( 24 ) in one direction moves the first lip ( 16 ) relative to the second lip ( 18 ), thereby adjusting the feed gap ( 20 ). The geometries of the slot ( 26 ) and the gap-setting device ( 28 ) are such that movement in a second opposite direction is limited to a known position, thereby providing a registration position for the front portion ( 24 ) of the first die part ( 12 ) and thereby providing a registration position for the first lip ( 16 ). |
