| 摘要 |
<p>An automatic rapid-attachment chuck device for attaching axially insertable chucks (1) to machine chuck heads (2) in bell-forming machines for thermoplastic pipes, wherein the chucks (1) are removably and projectingly constrained to a fixed support (6) in the machine chuck heads (2), which support (6) is provided with a flange (4) for centring the chuck (1), said flange (4) having through holes (5) for connecting the chuck (1) to the chuck head (2). The device comprises: a plate (7) affording slots (8) of varying breadth and rotatable on a fixed support (6) on activation of means (11) for actuating and mobile inrelation to the flange (4); pins (9), provided with heads (10), said heads (10) being conformed such as to be able to transit freely through the holes (5) in the flange (4) and through the slots (8) in the plate in a chuck (1) mounting position on the chuck head (2); interefering geometrically with all of the slots( 8) in a second extreme position in which the plate (7) is rotated in relation to the first extreme position, such as to resist a detachment of the chuck (1) from the chuck head. <IMAGE></p> |
