3results about How to "Easy to eject" patented technology

The invention relates to the technical field of concrete performance detection, in particular to a concrete test block mold, a demolding device and a demolding production line, the concrete test block mold comprises a diaphragm capsule, a needle hole is formed in the bottom wall of the diaphragm capsule, and the needle hole penetrates through the bottom wall of the diaphragm capsule. The demolding device comprises a base, a positioning block matched with the positioning groove and a positioning seam matched with the positioning edge are arranged at the top of the base, an ejector pin is arranged in the center of the top of the positioning block, a plurality of vent holes are formed in the top of the positioning block around the ejector pin, and an air compressor connected with the vent holes is arranged in the base. The demolding production line comprises a control center, a transfer robot, a demolding device, a standing frame, a mold conveying belt and a coding workstation. The demolding device has the effect of improving the demolding quality of the test block.

This application relates to a pre-assembly / disassembly device for large synchronous chain plates, comprising a steel frame with two steel beams slidably connected to it. Each steel beam is equipped with a gripper, and multiple grippers are arranged along the length of the steel beams. A driving component is provided between the two steel beams to move them closer together or further apart. This application effectively reduces the tension between the chain shaft and the chain, thereby improving the pre-assembly / disassembly preparation efficiency for large synchronous chain plates.

The invention discloses a turning device for preventing core deviation in polished rod processing, which relates to the technical field of polished rod processing, comprises a base, a fixed seat is provided on one side of the top surface of the base, a movable seat is provided on the other side of the top surface of the base, and a guide column is fixedly connected to the inner side surface of the fixed seat; a cutter is installed on the guide column, and an adjustment component is provided inside the guide column; a transverse movement component is provided inside the transverse movement cavity; a fixed cylinder is fixedly connected to the turntable, a guide cylinder is installed on the fixed cylinder, and abutment components are provided inside the fixed cylinder and the guide cylinder; a collet is installed on the inner side surface of the turntable; the invention facilitates the one-time turning operation from the head to the tail of the rod to be turned through the cooperation of the guide cylinder, the abutment component, the collet and the push rod, which can effectively avoid the occurrence of eccentricity and steps in the secondary turning of the polished rod; and when the rod to be turned is processed, it can play a role of automatic centering of the head axis and the tail axis, which can improve the compliance rate of the rod body after forming during the turning operation.