53results about How to "Avoid repeated debugging" patented technology

The invention relates to a preparation method of an anilinoquinazoIine compound, in particular to a method for preparing gefitinib and an intermediate thereof. The preparation method of the invention not only avoids the use of highly-pollutant halogenating agents to greatly reduce environmental pollution, but is also characterized by the connection with a 3-halogenated propyl side chain at first prior to the synthesis of a quinazoline parent ring and then introduction of a morpholine ring at the last step of the synthesis, thus repeated adjustment for pH value in the purification of a reaction product of every step is avoided, a purification method is simplified and the yield is raised.

The invention discloses an intelligent control type environment-friendly automobile material loading system. The system comprises a local sealing cover (1), a dust shielding curtain (2), an ash conveying chute (3) and an automobile (4), wherein the dust shielding curtain (2) is connected to the periphery of the lower part of the local sealing cover (1), the ash conveying chute (3) is arranged at the upper part of the local sealing cover (1), moreover, the ash conveying chute (3) communicates with the interior of the local sealing cover (1), the automobile (4) is provided with an automobile material loading box (401), and the automobile material loading box (401) is positioned below the dust shielding curtain (2). According to the intelligent control type environment-friendly automobile material loading system, the optimal configuration of the automobile and the material unloading speed as well as the dust removal air volume of the ash conveying chute can be achieved, moreover, the debugging result is recorded in real time to be uploaded to a system database to be used for the next material unloading process, and the whole regulation and control process is intelligent, environment-friendly and free of labor cost.

The invention relates to a linear inertial piezoelectric actuator with a displacement sensing function and an actuating method. The actuator consists of a cylindrical housing, a base, a moving unit, adiamond ring, a piezoelectric stack, an inertial mass block, a permanent magnet and a proportional linear Hall sensor, wherein the bottom end of the cylindrical housing is fixedly connected with thebase; the interior of the cylindrical housing is as follows from top to bottom successively: the moving unit whose left and right ends are closely attached to a rail square groove in the casing, the diamond ring which is connected with the moving unit through an adjusting screw, the piezoelectric stack which is mounted in the diamond ring in an interference manner, the inertial mass block which isbonded under the diamond ring, the permanent magnet which is fixed to the lower surface of the inertial mass block, and the proportional linear Hall sensor which is mounted on the upper surface of the base. The linear inertial piezoelectric actuator with the displacement sensing function and the actuating method in the invention use an asymmetric sawtooth wave to drive the piezoelectric stack; actuation is performed through the principle of inertial impact; the proportional linear Hall sensor is adopted to sense the displacement in real time; the structure is compact and easy to install, theactuation is fast and accurate, the outage is locking, and the clamping force is adjustable.

The invention discloses an inkjet printing device with a distance measuring function. The device comprises a spray head and a control module, wherein the spray head comprises a spray nozzle, a pair of charging pole plates used for charging ink drops, a pair of high-voltage pole plates used for deflecting the charged ink drops, as well as a distance measuring device which is fixed relative to the spray head; and the control module comprises an ink route system, an ink drop charging control system, a high-voltage control system, a controller and a storage device where at least one table group is stored. According to the device provided by the invention, different charging methods and charging compensation data are utilized according to different inkjet printing distances, so as to achieve a good inkjet printing effect. The invention further discloses an inkjet printing method with the distance measuring function.

The invention discloses a flexible core pulling device of a numerical control pipe bending machine. A sliding end of a sliding shaft is located in an inner hole of a sliding sleeve; four guiding pillars are fixed in guiding pillar fixing grooves in the inner surface of the sliding sleeve correspondingly, the working surfaces of the guiding pillars are distributed in guiding pillar grooves in the outer periphery surface of the sliding shaft in an embedded mode correspondingly; and a plunger type hydraulic cylinder is installed at the top end of a connecting rod of the sliding shaft, and a wiredrum and a core mold are connected to two ends of a steel wire rope. According to the flexible core pulling device of the numerical control pipe bending machine, a cumbersome pulling rod is replaced with the steel wire rope, a core rod of a traditional core mold of a structure with a core print and with the core rod is reduced, and only a core print is remained, the steel wire rope is directly connected to a head core print, and repeatedly adjustment of the position of the core rod in a pipe fitting, a defect of curving of the pipe fitting caused by excessive extending-out quantity of the corerod and interference of other molds are avoided; and the core mold can be conveniently inserted into the pipe fitting, and the installing time of the core mold is shortened, so that the molding quality is improved.