| 摘要 |
<p>1453735 Shoemaking VIGES SpA 29 July 1974 [24 Sept 1973] 33481/74 Heading A3B In apparatus for roughing the bottoms of lasted shoe uppers by a sequence of passages of roughing tools, each passage effects the machining of a predetermined area of the bottom of the upper, the roughing devices together serving to roughen the entire bottom of the upper. The process is carried out by using several roughing tools, e.g. rotary steel wire brushes 11, one at each station 6-10 of Fig. 1, seats 3 for shoe lasts being provided on a rotatable annular support 2. With the latter rotating continuously in direction F, uppers 12 mounted on lasts may be inserted at 4 and after roughing removed at 5. A suitable roughing station (Fig. 3) comprises a bridge support 13 located over the support 2, bidirectional resilient devices 15 being mounted on a cross member 14 to allow a head 16 sufficient movement to follow the vertical profile of the sole. The head 16 supports a motor 17 to drive a roughing tool 19 supported by a carrier 20. The latter is attached to the head 16 by a knuckle device 21. Alternatively the process may be stepwise operated with the arrangement as in Fig. 1 but with the lasts mounted at 90‹ to those shown, i.e. along the radii of the support 2. For such stepwise operation, a suitable roughing station is shown in Fig. 4, the roughing tools 19' each operating along a sequence A-B-C-D-A (Fig. 2a) and each roughing a different zone of the sole. The machine is located at the side of the annular support 2', pneumatic or hydraulic cylinders 31, 32 supporting a frame 33 to provide longitudinal movement of the tool 19'. A carrier 39 supports the tool 19' and is itself supported by resilient means 40 to allow vertical movement of the tool. An alternative roughing machine is similar to that of Fig. 3 though now arranged such that the tool operates at 90‹ to the position of Fig. 3 and with added means to allow longitudinal movement. For Figures see next page</p> |
