Workpiece clamping device for laser welding machine

The utility model discloses a workpiece clamping device for a laser welding machine, which comprises a laser welding machine body and a fixed table fixedly arranged on the laser welding machine body, and is characterized in that a movable table is arranged at the upper end of the fixed table and is arranged on the fixed table in a front-back sliding manner through a first sliding component; a groove is formed in the upper end of the movable table, a first clamping assembly and a second clamping assembly which are structurally symmetrical are arranged on the movable table in a left-right sliding mode, and the first clamping assembly and the second clamping assembly are arranged in the groove in a sliding mode through a second sliding assembly. And a second sliding strip and a plug pin are arranged, so that clamping columns of the first clamping assembly and the second clamping assembly can be slidably adjusted on the second sliding strip according to the sizes of the workpieces, the current positions of the cl