2results about How to "Increased vertical stability" patented technology

This invention discloses an integrated multi-nozzle air-assisted 3D printing nozzle, comprising an upper horizontal plate, a lower horizontal plate, m material feed cylinders, and a heating element, where m is 3-100. The upper horizontal plate is located above the lower horizontal plate, and the two together form an air chamber. An air inlet is provided on the air chamber. The top wall of the air chamber has m material feed cylinder channels, and the bottom wall has m gas channels. The m material feed cylinder channels and m gas channels are all vertically arranged and simultaneously connected to the air chamber. The m material feed cylinders are vertically arranged, and each material feed cylinder has a discharge port at its lower end. The m material feed cylinder channels, m gas channels, and m material feed cylinders correspond one-to-one. The top of the i-th material feed cylinder is located within and sealed to the i-th material feed cylinder channel, and its bottom is located within the i-th gas channel, with a gap between them for gas passage, i = 1, 2, ..., m. This invention has a simple structure and effectively solves the problems of existing technologies that cannot achieve multi-nozzle printing and simultaneous air-assisted 3D printing of multiple materials and colors.

The utility model discloses a kind of perpendicularity detection devices of transmission shaft, it is related to transmission shaft detection technical field, including first mounting bracket, adjusting mechanism is installed in first mounting bracket inside, the utility model, through the cooperation track structure of three positioning blocks of annular arrangement, realize the multi-point synchronous locking and positioning of transmission shaft, positioning block is evenly distributed in track inside, track is rotated by external handle driving gear system, in the process of rotation, cam groove structure inside track guides positioning block to contract along radial direction synchronously, complete transmission shaft equidistant surrounding type lateral locking, effectively prevent shaking and skew, ensure detection accuracy and repeatability, simultaneously, by the pre-tightening force of spring extruding block and lifting rod down pressure, carry out constant pressure to transmission shaft top, to further improve vertical stability, realize all-around stable positioning and locking in three-dimensional direction, guarantee the stability and reliability in detection process.