Positioning device for iron painting spraying

The invention discloses a positioning device for iron painting spraying and relates to the technical field of iron paintings. The positioning device comprises a working table. The working table is provided with a sliding groove. A driving mechanism and sliding plates are arranged in the sliding groove. The bottom ends of the sliding plates are provided with a rack. The driving mechanism drives therack and the sliding plates to move in the sliding groove. The positioning device is simple in structure and fast and convenient to operate. Through arrangement of the driving mechanism, the slidingplates are made to move along the sliding groove to implement rough adjustment on the distance between two three-jaw chucks. Threaded rods are arranged and do rotational motion in sleeves to implementfine adjustment on the distance between the two three-jaw chucks. The positioning device is suitable for spraying positioning of iron paintings with various lengths and improves the positioning accuracy. Meanwhile, the positio