| 摘要 |
SUMMARY Circular ring shaped brush section for sweeping machines and procedure for production of such brush section. The individual wires (4) in the brush section are held in position mutually in an area close to the internal periphery of the brush section by means of a ring-shaped layer (7) of a thermoplastic material and by a ring (6) which is clamped round the wires (4) and the ring-shaped layer (7). The brush section can be produced as follows: a sheaf of wires (4) is first creased and cut to length whereafter the wires (4) are cut to accurate length and then a layer (7) of a thermoplastic material is moulded or extruded on ore end of the wires (4). The wires (4) are then given the shape of a coherent wire matting. The material (7) is surface cooled in a cooling device (12) whereafter it is forced into shape in a compression and shaping device (13). Then the matting is cut to length and can either be taken out of the machine as semi-manufactures or passed on to a hydraulic press (15) where they are folded to a circular ring shape and fitted into a ring (6). The brushes in the brush section will be homogeneous. The learning timefor operators is short and the speed of production can be increased. Such a brush section is therefore cheap to produce. |
