| 摘要 |
Apparatus (1) for lacing a flexible line (L) through sheet material (M), such as shade cloth, of an indefinite length in a continuous operation. The apparatus (1) has a set of pleating rollers (7), each with a series of teeth (9) spaced apart about the periphery (8). The pleating rollers (7) are mounted for rotation so that the teeth (9) intermesh in a mesh zone (10), sheet material (M) feeding through the mesh zone (10) during apparatus use being caused to fold by the teeth (9) into successive pleats (P). A lacing needle (20) projects toward the pleating rollers (7) and has a leading end (21) positioned in the mesh zone (10). Sheet material pleats (P) successively formed in the mesh zone (10) are pierced by the leading end (21) and received onto the lacing needle (20). The lacing needle (20) is connectable to a flexible line (L) for lacing through the material (M). A set of feed rollers (25) are positioned downstream of the pleating rollers (7), each with a circumferential groove (30) and being mounted for rotation so that the circumferential grooves (30) are in register one with another. The lacing needle (20) is positioned in the circumferential grooves (30) and supported by the feed rollers (25). Rotation of the feed rollers (25) strips the sheet material (M) from the lacing needle (20) and onto the flexible line (L) so that the line (L) is laced through the sheet material (M). |
