| 摘要 |
<p>A self-lubricating perforator arrangement wherein a horizontal guide plate for the perforating needles comprises parallel upper and lower partial guide plates which define a capillary gap between them. A unit situated above the partial plates contains an oil reservoir which communicates with the capillary gap to enable a regulated lubrication of the needles as they pass through the partial plates during operation. Also contained in the unit is a channel directly above the needles and the plates to receive the chads.</p> |
