Patent ES-346252-A1 (ES)
Title: Device for blind feeding of articles of hosiery to linking machines
IPC: D05B3/06
Filed: 1967-10-10
Abstract: Means for running a knitted article on to the points of a linking machine comprises a pair of plate-like members separated by an article-receiving gap disposed tangentially to the point dial, a guideway provided in one member along the gap, a comb member slidable in the guideway, and means for engaging the comb member with a knitted article disposed in the gap. Horizontal plates 3 and 4, Figs. 1 and 9, supported by respective structures 1 and 2, are separated by a gap 5 adapted to receive knitted articles 93 supported thereat by thickened upper ends 94, gap 5 being disposed tangentially to the point dial 6 of a linking machine. Rods 9, 10, rotatable and axially-slidable on plate 3 at respective ends of gap 5, are provided adjacent gap 5 with respective crank arms 11 each having a row of teeth 12 normally parallel to plate 3. A groove 14 at the other end of each rod engages the upper end of a lever 16 which is pivoted on a shaft 20 and carries intermediately a follower roller 21 biased by spring means against a cam 23 on a shaft 25. Each rod is formed intermediately with a crankarm 27 engaged by the upper end of a rod 29 the lower end of which engages a lever 32 pivoted on a shaft 33, and which carries a follower roller 34 biased by a spring 35 against a cam 36 on shaft 25. A plate 37, slidable in structure 1 on lugs 1a, carries a roller 38 adjacent gap 5. A lug 38a on plate 38 abuts the upper end of a lever 39 which is pivoted on shaft 20 and carries a follower roller 43 biased against a cam 45 on shaft 20 by a spring 39a. Plate 4 is formed in its edge along gap 5 with a groove 47 slidably receiving a comb member 58 in the form of a bar having two rows of teeth 59 projecting towards gap 5. Rods 60, slidable in plate 4, project into groove 47 to abut comb 58, and are coupled to levers 63 which are pivoted on a shaft 53 and carry follower rollers 65 biased by spring means against a cam 67 on a shaft 57. A plate 49, slidable on plate 4, is coupled to levers 52 which are pivoted on shaft 53 and carry follower rollers 54 biased by spring 52a against cams 55 on shaft 57. Brackets 69 on plate 4 journal a roller 70 adjacent gap 5. In operation, shafts 25 and 57 are driven in opposite directions through a single revolution by a motor 26, while the rollers 38 and 70 are also driven in opposite direction during this period. Initially, the rods 9, 10 and plates 37, 49 move inwardly towards gap 5, whereby the teeth 12 pierce the articles 93 and pass under plate 49, while the rollers 38, 70 co-act to tension the article. Plates 37, 49 are then withdrawn and rods 9, 10 are rotated, whereby the teeth 12 are inclined upwardly to raise the ends of the article. Plate 37 then again advances and the rollers impart a predetermined degree of stretch to the articles. Rods 60 are then advanced, whereby the teeth 59 pass through the stretched articles. Finally all elements return to their initial positions. A fresh comb 58 is then slid into groove 47, whereby the original comb 58 is forced along guideway 97 and the articles carried thereon are transferred to the points of dial 6 by a pair of pivoted members 98. The stripped comb 58 passes on to a bar 99 which pivots downwards to transfer the comb to a receiving channel 102. In an automatic arrangement, Fig. 19, a comb 203 moves along a guide groove 205 to convey a workpiece impaled thereon to a point dial 201. The stripped comb passes via successive conveyor belts 209, 210, 211 to a loading station 204 where the comb rests on belt 211 within fixed walls 237, 238, 239. Operation is initiated by displacing a plate member 241 against spring bias, whereby member 241 pushes comb 203 through an aperture in walls 239, and comb 203 slides down an inclined surface 249 to pass into guideway 205 through an aperture 248. The passage of comb 203 momentarily actuates a microswitch 250 to start a motor 252 corresponding to motor 26. A cam 257 on a driven shaft 256 then actuates a microswitch 258, whereby shaft 256 is driven for a single revolution for transfering the workpiece, supported in a gap 206, on to the teeth of comb 203. Near the end of the revolution of shaft 255, a cam 256 thereon acts upon a linkage to turn a shaft 265 carrying a radial lug 266 disposed in a notch 207a formed in a bar 207 disposed in guideway 205. Bar 207 thereby shifts comb 203 out of the loading position, and the workpiece thereon engages a pivoted bar 268 to actuate a microswitch 270 for starting the linking machine. Peripheral teeth 218 on the point dial drive a sprocket 215 connected by a chain 212 to sprockets 213, 214, the length of chain 212b between the latter being adjacent and parallel to guideway 205. Teeth 212a on chain 212 thereby engage the workpiece and move the latter and comb 203 towards the point dial 201. Sprocket 213 is connected by a chain 220 to sprocket 221 on a shaft 222 arranged to drive the conveyors 209 and 210, conveyor 211 being driven via a chain 231 from conveyor 210. The linking machine stops when the workpiece. disengages from bar 268 adjacent the point dial 201. The apparatus completes a similar cycle each time plate 241 is actuated to pass a comb 203 into the guide groove 205.