Automatic tensile positioning mechanism of button

The utility model discloses an automatic tensile positioning mechanism of button, it includes: a base plate, a plurality ofly install the sliding seat on the base plate and install on the base plate and be used for driving the drive arrangement that this sliding seat moved, wherein, be provided with first connecting piece between the two adjacent sliding seats, make the sliding seat draw each other or tighten up each other under a drive arrangement's drive, be provided with a plurality of slidable tools on every sliding seat, be provided with on this base plate be used for driving the 2nd drive arrangement that this tool moved on the sliding seat, and be provided with the second connecting piece between the two adjacent tools, make a plurality of tools can draw each other or tighten up each other under the 2nd drive arrangement's drive, wherein, the tool upper end is provided with the die cavity that is used for the holding button. The utility model discloses can increase longitudinal pitch and transverse pit