| 摘要 |
<p>The machine is intended to operate using tacks or like fasteners and comprises individual tackers (300) mounted for movement with the wiper plates (174') of the machine which serve to position the tackers in relation to the shoe bottom. The tackers (300) are actuated progressively, starting at the so-called "back tacks" (i.e. the tacks inserted in the backseam region of the heel seat of the shoe) and progressively therefrom in pairs, one at each side of a longitudinal centre line of a wiper assembly (172'). Electronic control means are provided for controlling the sequence of operation of the tackers (300) and in addition said control means can be used to de-actuate selected tackers, according to the number of tacks desired for insertion. The wiper assembly (172') is positioned in relation to the shoe, and thus determines the "back tack" position, by engagement of a V-block (330) associated with the wiper assembly with a rearward face of the heel band (152), while the tack pattern is determined by the amount of radial movement of the wiper plates (174'), which can take place independently of any forward movement thereof. The electronic control of the machine is effected in accordance with a programmed instruction selected according to the style and/or size of the shoe to be operated upon. <IMAGE></p> |
