| 摘要 |
1,061,434. Supplying bobbins to winding machines. LEESONA CORPORATION. Aug. 21, 1963 [Oct.12, 1962], No. 39905/66. Divided out of 1,061,432. Heading D1F. The claims of this application are concerned with the bobbin magazine described in Specification 1,061,432. Bobbin Supply Magazine The fresh supply bobbins B, Fig. 6, lean against a wall 82 and gravitate downwardly to a generally circular chamber 94 for transference to the carrier K. A spring biased plate 90 presses the bobbins against the wall 82 to stop them falling over. A "pusher bar" 110 urges the bobbins towards the chamber 94. A stop 144 just before chamber 94 prevents free movement of the bobbins into the chamber 94. Behind stop 144 is a slot in the floor of the bobbin chamber, said slot housing a segment 146 secured to a rotatable stub shaft 148, Fig. 8, (not shown). Means are provided to rock the segment 146 upwardly to contact the bottom of a bobbin B abutting the stop 144 to lift it upwardly above the stop 144 whereafter the pusher bar 110 pushes the bobbin over the stop 144 and into the chamber 94. A guide plate 162 in the chamber 94 prevents bobbins falling over as they are moved into the chamber 94. A pusher bar 100 is actuated through a pushing cycle after each new bobbin is loaded into the chamber 94. This ensures that the pusher bar will always retreat behind and gather in any reserved supply bobbins that have been loaded manually into the magazine. To do this the pusher bar flattens itself against the wall 82 during its rearward movement. Bobbin Loading Centering mechanism. The apparatus includes means for permitting a bobbin in the chamber 94 to be dropped by gravity on to the arbor 220 when the arbor is below the chamber 94. There is further means for centering the bobbin on to the arbor 220. Fig. 3 shows a plate 328 positioned beneath the bottom opening of the chamber 94 to stop a bobbin dropping out. A roller 331, Fig. 1 (not shown), can act on an L-shaped latch 330 secured to the underface of the plate 328 to temporarily rotate the plate 328 away from beneath the chamber 94 to allow the supply bobbin therein to drop through and fall on to the arbor 220 when the arbor is below the chamber 94. To ensure accurate centering of the bobbin on the arbor 220 there are three segments 397, 398 and 399. Fig. 4 (not shown) positioned beneath the chamber 94, these segments being suitable shaped so as to be capable of closing on the lower tapered portion of a yarn supply bobbin and guiding it on to the arbor 220. A trigger 414 Figs. 21, 23 (neither shown) serves to release the segments from their grip on the fresh supply bobbin once it has been positioned on the arbor 220. The trigger 414 serves, on actuation, to permit a tension spring 428 to draw the trio of segments 397, 298 and 299 apart. The segments 397, 298, 399 are normally held closed to define a conical recess that guides the descending bobbin on to the arbor 220. As the bobbin is guided by the segments 397, 298, 399 on the arbor 220 it displaces a trigger 414 that permits springs means to cause the segments to move apart. This centering mechanism is recocked by moving the operating arm 366, Fig. 23 (not shown) clockwise and this is done by a cam roller 430 Fig. 4 (not shown) that bears against the operating arm 366 during rotation of the shaft 60 subsequent to each opening of the centering device. Rearward motion of part of the centering device, namely the arm 378 in Fig. 23, is used to re-start the cycling of the shaft 60 and the components carried thereby. |
