Anti-separation detection device of signboard assembly structure

The invention discloses an anti-separation detection device of a signboard assembly structure, and relates to the field of signboards, a fixing frame is mounted on the upper side of a connecting base, a fixing box is mounted in the fixing frame through an adjusting mechanism, a contraction frame is mounted in the fixing box, and the contraction frame comprises a first sliding block and a second sliding block; the first clamping detection mechanism and the second clamping detection mechanism are connected with the first sliding block and the second sliding block correspondingly, and the first clamping detection mechanism and the second clamping detection mechanism make contact with the back face of the signboard based on the first sliding block and the second sliding block. The signboard assembling device can be assembled on the outer side of an assembling device through the connecting base, so that the signboard assembling device can move to the assembling position of a signboard along with the assembling dev