2results about How to "To prevent" patented technology

This utility model discloses a chip testing device, relating to the field of electronic chip testing technology. The chip testing device includes a first pressing mechanism and a second pressing mechanism. The second pressing mechanism includes a cover assembly, a pipe connector disposed on the cover assembly, and multiple first test pieces. The cover assembly is detachably disposed on a base to open or close the slot of the positioning groove. The first test pieces are used for electrical connection with the chip. The cover assembly has a flow cavity, and multiple first test pieces are spaced apart within the flow cavity to form multiple gas supply channels. One end of the pipe connector is used to connect to a nitrogen gas source, and the other end is connected to the multiple gas supply channels. The technical solution provided by this utility model achieves the effect of eliminating electric arc generation through the interaction of nitrogen input and the first test pieces as testing structures, thereby improving the overall safety of the testing device.

This utility model relates to the field of electric wire and cable production technology, and in particular to an extrusion coating device for electric wire and cable. This device allows the electric wire and cable to be coated with different materials sequentially during its movement, thereby forming a multi-layer composite structure in a single processing cycle, effectively improving production efficiency and the bonding strength of the coating layers. The extrusion mold is equipped with a thickness control component, including horizontally movable left and right adjustable die lips, which can precisely adjust the size of the discharge hole, ensuring the uniformity and adjustability of the coating thickness to meet the processing needs of electric wire and cable of different specifications. Furthermore, the design of the conical injection channel and stepped transition surface optimizes the flow distribution of the molten material, reducing turbulence and bubble generation, and improving the coating quality. The combined use of the guide sleeve and positioning component accurately guides the electric wire and cable into the extrusion cavity, preventing deviation and ensuring the symmetry and consistency of the coating layers. The overall structure is compact, easy to operate, suitable for continuous production, and has high practicality and economy.