Gap detection device after thermal expansion and cold contraction after production of injection molding structure

The utility model belongs to the technical field of detection, and discloses a gap detection device after thermal expansion and cold contraction after production of an injection molding structure, which comprises a front limiting plate, a sleeve is movably clamped in the middle of the interior of the front limiting plate, a telescopic bin is fixedly mounted on the front surface of the sleeve, and a second spring is fixedly mounted at the front end of the interior of the sleeve. Limiting blocks are fixedly installed at the left end and the right end of the back face of the telescopic bin correspondingly, and fixing blocks are fixedly installed on the front faces of the two limiting blocks. According to the utility model, the purpose of good detection effect is achieved by arranging a left scale, a right scale, a second spring and the like, at the moment, a sliding handle is pressed, a telescopic bin and two limiting blocks move towards the rear end, the second spring is compressed, two fixing blocks are separa