| 摘要 |
<p>The invention relates to a cylinder for soldering tongs, said cylinder comprising a housing (12) in which two rods (14, 22), each fixed to a piston, are arranged, a pre-stroke rod that is adapted in such a way as to position the tongs in an advancing position, and a working rod that is adapted in such a way that the tongs are positioned in a working position, said rods being coaxially mounted in said housing. The tongs also comprise blocking means, the pre-stroke rod (22) and the pistons (30) being mounted inside the working rod (14), while the working rod (14) is mounted in the housing (12), and the blocking means (40, 48, 50) are adapted in such a way as to block the pre-stroke rod (22) in translation in relation to the working rod (14) when the tongs are positioned in the working position.</p> |
