My original tumblr post was here. This image was researched by Bacchus at ErosBlog as part of the “Δ commission.” The research was originally published at Hedonix as “Δ 038 – Chained And Stripped By Robots.” Here is what Bacchus found.

The identification of this animation was made enormously easier by someone who reblogged it after its appearance at the Erotic Mad Science tumblr and appended this attribution when they did so: “Brinke Stevens – SLAVE GIRLS FROM BEYOND INFINITY.” The reference is to 1987’s Slave Girls From Beyond Infinity movie, which did indeed feature Brinke Stevens as a character named Shayla. The inevitably-too-detailed plot summary of the movie at Wikipedia describes a scene in which “Shala is seized and stripped by Zed and the robots”, which would seem to fit the action visible in the animation. A higher-resolution screenshot matching one of the animation frames, found at this Russian torrent site, confirms the attribution: