4results about How to "Block fall" patented technology

The application relates to a material conveying trolley, belonging to the field of material transfer equipment, which comprises a trolley frame and a trolley bucket fixedly connected to the trolley frame, the trolley bucket comprising a bottom plate, two oppositely arranged side plates fixedly connected to the bottom plate, an end plate fixedly connected to the bottom plate and connecting one end of the two side plates on the same side, a movable plate hinged to the bottom plate to enclose the bottom plate by matching the side plates and the end plate, and a locking assembly arranged on the side plates to lock the movable plate and the side plates. The application has the advantages that the movable plate can match the side plates, the end plate and the bottom plate to form an upper opening containing space, effectively avoiding material falling from the trolley bucket and improving the stability of material transportation; when discharging, the material can be directly discharged from the trolley bucket through rotating the movable plate to open one side, thereby improving the convenience of discharging.

This utility model discloses an energy-saving packaging box printing machine, belonging to the field of printing machine design and development. It includes a printing machine body, a printing channel running horizontally through the printing machine body, a conveyor frame fixedly installed on both sides of the printing machine body at the printing channel position, and a conveyor belt installed on the conveyor frame for transporting printed items. An impression cylinder is rotatably installed inside the printing machine body at the printing channel position. Rubber rollers for carrying ink are rotatably connected to the top and bottom of the impression cylinder inside the printing machine body. The conveyor frame and conveyor belt are configured in two sets, with the conveying surface of each set tangent to the impression cylinder. The two sets of conveyor belts transport in opposite directions. By setting up multiple production lines, the output of packaging box printing can be increased under the same operating mode, thereby reducing the energy consumption of printing a single packaging box.

This application discloses a method and apparatus for chemical vapor deposition (CVD) on wafers, belonging to the field of CVD technology in semiconductor manufacturing. The method includes: depositing a thin film on a wafer using a reactive gas within a reaction chamber; adjusting the flow rate of a purge gas blown into the reaction chamber to a fixed flow rate; using the purge gas with the fixed flow rate to purge particles that have soft-landed on the wafer after thin film deposition; continuously blowing the purge gas with the fixed flow rate into the reaction chamber to form a stable gas curtain above the wafer; and removing the wafer from the reaction chamber while the stable gas curtain is present. This application effectively prevents large particles adhering to the chamber walls and gas nozzles from falling onto the wafer by maintaining a continuous flow of purge gas in the chamber after deposition until the wafer is unloaded, thus solving the particle contamination problem in existing wafer deposition processes.