| 摘要 |
An apparatus for manufacturing rectangular frames composed of strips which are assembled by way of mutual joining elements which are driven into them by stapling machines (77-80) so as to straddle the joints formed by mating the strips at right angles, which comprises: a horizontal beam (12) which is supported so that it is rotatable centrally about a vertical axis (A) so as to form two arms which lie diametrically with respect to the vertical axis, each arm being provided with sliding guides for respective carriages; two levers, which are articulated to each one of the carriages about axes which are parallel to the vertical axis; a grip element for a respective one of the strips that constitute the frame being mounted on each one of the levers; elements (10) for actuating the grip elements, the levers, the carriages and the beam so that in a first position of the beam, the grip elements are located in a position for picking up the strips to be assembled; in a second position, the levers are rotated so that the strips picked up by the elements of each pair of levers are mated at right angles; in a third position, the carriages are mutually adjacent so as to form a frame; and in a fourth position, the corners of the frame are arranged on the stapling machines. <IMAGE> |
