Positioning and conveying device in block machining process

The invention relates to the technical field of block positioning and conveying, and provides a positioning and conveying device in the block machining process. The sliding rail is arranged in the guide grooves in a sliding mode, the sliding arm is arranged on the sliding rail, the conveying assembly is arranged on the sliding arm and comprises a plurality of installation plates, the installation plates are sequentially arranged on the sliding arm, the first clamping arm and the second clamping arm are arranged on the installation plates in a swinging mode, and the lower pressing plate is arranged on the third linear driving part. The lower pressing plate is arranged on the first clamping arm and located between the first clamping arm and the second clamping arm, the lower pressing plate is driven by the third linear driving part to move downwards or ascend, and the puncture needle is arranged on the lower pressing plate and used for being inserted into block materials; according to the technical scheme, the