Recently, the "sand injection device of a core shooter" developed by a company was authorized by the China National Intellectual Property Administration. This sand injection device includes components such as a nozzle sleeve, cooling fan, sand injection bucket, and heat sink. The inner wall of the connecting ring at the upper end of the sand injection bucket has an insertion hole, and an insertion block is installed in the insertion hole. The end is equipped with a detachable bucket film. The bottom of the sand injection bucket is connected to the sand outlet pipe, and a heat sink is installed on the surface of the sand outlet pipe.

Another enterprise has successfully overcome the technical difficulties in the field of core shooting machines and obtained a patent for a core shooting machine with a new type of sand injection mechanism. This core shooting machine consists of a fixed base, a top cover, a sliding track, and a sand shooting mechanism. The fixed base is used to stabilize the mold, and the top cover is set above, equipped with a sand dropping mechanism and a pressing mechanism. The sliding track is located between the top cover and the fixed base, and the sand shooting mechanism includes a moving frame, a sand shooting component, and a protective fence.

Recently, the China National Intellectual Property Administration has received good news that an enterprise has successfully obtained a patent entitled "a hook type shot blasting machine for cleaning castings". The patented equipment includes a body and a gantry, with the gantry firmly connected to the top of the body, a feeding device at the bottom, and a cleaning device inside the body.