Variable-distance gripper mechanism

The invention relates to the technical field of packaging equipment, in particular to a variable-distance gripper mechanism which comprises a supporting clamping base used for supporting, and a fixing guide groove used for limiting is formed in the side portion of the inner end face of the supporting clamping base. By arranging the limiting device, when the positioning distance of the limiting device is subjected to variable-distance regulation and control, a first servo motor can drive a threaded clamping seat to accurately move in the X-axis direction through a second ball screw, and meanwhile, a second servo motor can drive the threaded clamping seat to accurately move in the Y-axis direction through a first ball screw; furthermore, the two groups of displaced threaded clamping seats can be rigidly connected with the first guide device and the second guide device to synchronously drive the plurality of groups of limiting devices to accurately displace on the X axis and the Y axis, so that the plurality of