所述压力机构（36）通过供给单元（39）填充有气态或液态介质，以调节由输送机构（28）施加在焊线（13）上的接触压力。

The pressing means (36) is filled with a gaseous or liquid medium via the supply unit (39) in order to adjust the contact pressure applied to the welding rod (13) by the conveying means (28).

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所述压力机构（36）通过供给单元（39）填充有气态或液态介质，以调节由输送机构（28）施加在焊线（13）上的接触压力。

The pressing means (36) is filled with a gaseous or liquid medium via the supply unit (39) in order to adjust the contact pressure applied to the welding rod (13) by the conveying means (28).

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