Backward flow type straight line slider device

The utility model discloses a backward flow type straight line slider device, including base of sliding block, slider, ball, backward flow end cover, actuating mechanism and screw rod, base of slidingblock's middle part is equipped with a connected in star, and base of sliding block is last to be equipped with two convex defining flange, two the defining flange symmetry sets up in the front and back of strip connected in star portion, the slider stretches over on two defining flange, the ball set up as a plurality ofly and place the slider in and defining flange between, the backward flow endcover sets up as two and fix respectively at slider tip about, the screw rod is placed in the connected in star and the one of which tip is connected in the actuating mechanism transmission, actuating mechanism places base of sliding block's afterbody and the relative base of sliding block free rotation of drive screw in, fixedly connected with screw seat bottom the slider, screw seat screw cup joints on the screw rod. Ab