| 摘要 |
According to the invention, a drawing carriage (16) is made to execute a forward stroke and a return stroke alternately, along longitudinal guides on a drawing bench (11), between two opposite drawing heads (12), each disposed in one end area of the said bench (11) and each including at least one draw plate, by means of driving horizontally with a reciprocating motion. At least one piece to be drawn is pulled in each forward stroke and in each return stroke by the said drawing carriage (16), being made to pass through a corresponding draw plate in the drawing head (12) from which the said carriage (16) is made to move away, in this way, the carriage (16) executes working strokes in both directions of horizontal movement along the corresponding guides, causing at least one piece to be drawn in each working stroke.
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