| 摘要 |
<p>A welding unit joining plastic mouldings has a casing (2) accommodating the control unit. There are connections for current supply and for an armoured cable. A switch (11) starts the welding process. In the unit, the course of the welding process is displayed by three lights (12, 13, 14) on the surface of the casing. One indicates the start and end of welding, the other two (13, 14) indicate current supply and weld completion.</p> |
