GB1014463A - Improvements relating to wrapping machines - Google Patents

Abstract

1,014,463. Helically wrapping annular articles, covering cores by winding. A. LARMUTH, and L. J. LARMUTH. Aug. 28, 1964 [Aug. 30, 1963], No. 34364/63. Headings B8C and B8G. [Also in Division B3] A roll of wrapping material 10 (Fig. 4) is carried axially through a slowly rotating annular article 1 such as a coil of wire by a ram or rams 6, 7, displaced relative to the coil and brought back outside the coil by a further ram or rams so that the strip of wrapping material is helically wound round the coil. In one embodiment, the roll carrier 11 is taken to the centre of the coil by a ram 6 where ram bars in a second ram 7 enter sockets in the carrier 11 and a latch 15 engages a cross-pin 16 in the carrier so that the ram 7 can retract taking the carrier 11 with it. When nearly fully retracted rollers 20 on the latch 15 ride up an inclined surface 18 to disengage the latch and a rod 29 turns a detent 27 anticlockwise to hold the latch released. After relative movement of the coil and roll, by either horizontal or vertical movement of the ram support 5 or the coil support 3, the ram 7 carries the roll outside the coil to the centre position where it is free to be engaged again by the ram 6. Alternatively, the carrier may be transferred from one ram to the other at each end of the coil 1. One of the rollers 2 supporting the coil is rotated by a ratchet mechanism once during each cycle of the wrapping roll. Two rolls of different wrapping materials such as paper or fabric and metal strip may be superposed on the carrier. The height of the rams is adjustable to enable them to pass through the centres of articles of various sizes.