摘要:
Disclosed herein is an apparatus for forming and planting fastener elements (E) comprising a ram (2) mounted on a frame (1) for reciprocal movement and having a cutting die (4) provided with a passage (4a) for a wire (W) to be used for elements (E) and a forming die (5) for forming an engageable head (C) in an element (E), a cutting punch (12) for cutting out an element (E) from the wire (W), a forming punch (10) for forming the engageable head (C) in cooperation with the forming die (5) and at least one side punch (13) for planting the element (E) on a fastener tape (S). The apparatus is characterized in that cam means (20, 21, 22) for driving the ram (2), forming punch (10) and side punch (13) are formed on a common output drive shaft (19) and arranged so that the ram (2) dwells for a predetermined time at the end of each forward and backward movement and the side punch (13) secures the element (E) to the tape (S) during the dwell of the ram (2) at the end of its forward movement and the forming punch (10) is actuated during the dwell of the ram at the end of its backward movement.
摘要:
A drawing device for use in a drafting machine has a base (1) movable to any desired position; at least one drawing pencil (2) fixedly secured to the base through a holder unit (10) fixed to the latter; a driving arrangement (3) capable of moving part of the drawing pencil longitudinally thereof relative to the base, and a stopper (4) adapted to limit the upward movement of movable component parts of the drawing pencil. The drawing pencil comprises a casing (5) having a lead guide (20) fixedly secured to the leading end thereof; a pipe member (6) slidably mounted in the casing, and having a chuck ring (29) fixedly secured to the lower end thereof, said pipe member having a sleeve (7) tightly fitted and fixedly secured to the outer peripheral surface of the upper part thereof, said sleeve being connected to the driving arrangement; and a lead stock (8) having a space for lead stock formed in the upper part thereof and also having a lead chuck (30) fixedly secured to the lower end thereof so as to achieve lead holding function in cooperation with the chuck ring, said lead stock being slidably mounted in the pipe member.
摘要:
Disclosed herein is method for assembling a pair of slide fastener stringers (F 1 , F 2 ) each having spaced sections (S 1 , S 2 ) in continuous rows of scoops and an apparatus for the same. The leading edge of the scoop row in the leading stringer is detected by a probe (34) inserted into the guide groove (13, 14) of the binder member (11) for the scoop row. The engagement of the leading edge and the claw (35) of the probe (34) retards the progress of the leading stringer (F,) thereby retarding the rotation of the feed roller (1a) for the leading stringer (F,) while increasing the speed of the rotation of the other feed roller (2a) for the trailing stringer (F2), which is connected to the first feed roller through a differential transmission mechanism (7). After both of the stringers (F,, F2) are brought into right alignment for exact engagement in the binder member (11), the claws (35) disengage from the leading edges of the scoop row in the stringers and come out of the spaced sections (S 1 , S 2 ). In this condition, the spaced sections (S,, S 2 ) in the stringers (F,, F2) are detected individually by detecting lever means (40). Detector means (45) detect the movement of the detecting levers (40) and judge whether the proper interengagement of the stringers is obtained or not so that it produces either a signal to protrude the claw into the same spaced section following insertion of the detecting lever or a signal to stop operating the feed rollers.