50results about How to "Circumstances affecting quality" patented technology

The invention provides a finished-product integrally jointed type three-dimensional printing head. The finished-product integrally jointed type three-dimensional printing head breaks through a construction form of a traditional three-dimensional printing head; a heating layer is used for carrying out further heating on raw materials in an outer conveying pipe, so that the temperature and flowability of the raw materials in the outer conveying pipe are higher than the temperature and flowability of raw materials in an inner conveying pipe; in a printing process, a lower inclined plane of a flexible heating block is in contact with a printing layer which is slightly cooled and condensed on a lower layer, so that the upper surface of the printing layer on the lower layer can be melted; meanwhile, the raw materials flowing out from an upper feeding hole and the raw materials flowing out from a lower feeding hole are gathered in a material discharging hole; the raw materials flowing out from the lower feeding hole are uniformly distributed at the periphery of the raw materials flowing out from the upper feeding hole to cover the periphery; then the raw materials flow out from a third channel and are in contact with the printing layer on the lower layer, so that the raw materials flowing out from the upper feeding hole and the printing layer on the lower layer are naturally fused toform a whole body, and an obvious jointing surface is not formed between a printing layer on an upper layer and the printing layer on the lower layer; the jointing between the adjacent printing layersis firmer.

The invention discloses a novel FPC punching machine tool capable of automatically feeding and discharging a material. The novel FPC punching machine tool can be applied to a bare board section and an SMT section, automatically feeds the material, and after a punched product is accurately placed, scraps are automatically separated. The punching machine tool comprises a machine frame, and a punching machine, a feeding and discharging mechanism and a conveying mechanism are arranged on the machine frame, wherein the conveying mechanism is used for conveying a workpiece to the punching machine from the feeding and discharging mechanism to be punched and conveying the punched product back to the feeding and discharging mechanism. The feeding and discharging mechanism comprises a feeding device and a discharging device which are fixedly arranged on the machine frame and a workpiece translating device located between the feeding device and the discharging device, and a feeding and discharging manipulator device fixed to the machine frame is arranged at the lateral portion of the workpiece translating device. Compared with an existing device, the novel FPC punching machine tool has the advantages of being high in working efficiency, high in safety, good in machined product quality and the like.

The invention discloses smelting equipment for fusion casting of an aluminum rod applied to an aluminum profile. The smelting equipment comprises a smelting furnace, a nitrogen blowing device, an aluminum rod casting device and an anti-oxidation spraying device. According to the smelting equipment, impurities can be discharged efficiently and completely; in an overall smelting process, nitrogen isused for protecting molten aluminum liquid, and formation of oxide layers inside the cast aluminum rod and on the surface of the cast aluminum rod is prevented; moreover, the nitrogen can apply pressure on the molten aluminum liquid so as to increase the flowing speed, and thus cohesion is prevented and the efficiency is improved; furthermore, the molten aluminum liquid enters an aluminum rod mold pipe from bottom to top so that the relatively light nitrogen is upwards extruded out, the nitrogen is hardly left at some holes and can be discharged completely, and the situation that the qualityof the aluminum rod is affected by air bubbles can be prevented; and furthermore, an anti-oxidation coating on the surface of the aluminum rod can realize anti-oxidation protection for the aluminum rod after casting, so the quality of an aluminum profile product is improved.

The invention relates to an epitaxial growth device which comprises a furnace body, the furnace body is provided with a reaction cavity, a first reaction base and a second reaction base which are horizontally arranged are arranged in the reaction cavity, and the first reaction base and the second reaction base are arranged in a spaced mode in the horizontal direction. The furnace body is further provided with a first gas inlet part, a second gas inlet part and a gas outlet part which are respectively communicated with the reaction cavity, the first reaction base is arranged between the first gas inlet part and the gas outlet part, and the second reaction base is arranged between the second gas inlet part and the gas outlet part; the reaction medium can enter the reaction cavity through the first gas inlet part and the second gas inlet part respectively, and leaves the reaction cavity through the gas outlet part. According to the epitaxial growth device provided by the invention, the problem that the epitaxial layer output efficiency of an existing epitaxial furnace is too low is solved.

The invention provides a fitting structure of a top lever device and a shuttle changing device of a computerized flat knitting machine, and belongs to the technical field of computerized flat knitting machines. The top lever device comprises a pair of shutter guide rail brackets and a group of shuttle guide rails; the shuttle changing device comprises a nose connecting base and a group of shuttle changing control electromagnetic valves; the fitting structure of the top lever device and the shuttle changing device is characterized in that shuttle guide rail attached guide bars are arranged on the surfaces of the upward sides of the group of shuttle guide rails in the length direction respectively, shuttle guide rail limiting sliders are fixed on the front and rear sides of the nose connecting base respectively, and the shuttle guide rail limiting sliders are in sliding fit with the shuttle guide rail attached guide bars. In the process when the shuttle changing control electromagnetic valves moving along with the nose connecting base drive shuttles to move back and forth along the shuttle guide rails, the shuttle guide rails do not, for example, vibrate and shake, so as to ensure that the shuttles driven by the shuttle changing control electromagnetic valves move steadily on the shuttle guide rails and yarns can be accurately fed into a knitting mechanism by the shuttles; therefore, the situation that the quality of the fabrics are finally affected by missed stitch due to inaccurate yarn feeding can be avoided.

The invention relates to the technical field of slag stopper dispensing devices, and discloses a slag stopper dispensing device with a one-button operation function, including a car body, a control panel is fixedly installed inside the car body, and the left side of the car body An inserting plate is fixedly installed on the side, and a transport frame is fixedly installed on the top of the left side of the inserting rod. The top of the rod is plugged with a mobile platform, the top of the mobile platform is fixedly installed with a transmission box, and the front of the transmission box is movably equipped with a transmission shaft. The slag stopper dispensing device with one-button operation function can quickly move the slag stopper at the bottom of the transmission rod by setting the transport frame, which improves the efficiency of slag stopper delivery and enables the staff to put the slag stopper more quickly. It avoids the occurrence of injury to the staff caused by being around the high-temperature converter for a long time.

The invention discloses a kit for genetic detection of hereditary tumors, and relates to the technical field of kits. The kit for the genetic detection of hereditary tumors includes a box body, the box body is fixedly connected with a support plate, and the four sides of the support plate are respectively plugged into the four sides of the inner wall of the box, and the bottom of the support plate is provided with The water storage box, and the bottom of the water storage box is fixedly connected to the left side of the bottom of the box body, the top of the left side of the water storage box is plugged with a water inlet pipe connected to its inner cavity, and the end of the water inlet pipe away from the water storage box runs through the box the left side of the body. The kit for hereditary tumor gene detection uses a heat generating mechanism by pressing the reset button, the water in the water storage box is heated and then discharged onto the ring-shaped sponge in the hollow cylinder, and the ring-shaped sponge absorbs water and expands to closely contact the surface of the solvent bottle , so that the temperature of the water body is transmitted to the solvent through the solvent bottle, and the solvent is heated, so that the precipitate precipitated due to the lower temperature of the solvent gradually melts.

The invention discloses a yarn guide device of a spinning machine. The yarn guide device comprises a fixing box used for mounting a yarn guide unit; two sides, far away from each other, of the fixingbox are provided with material holes respectively, and the two sides, far away from the material holes, of the fixing box are respectively fitted with freely rotatable rollers through rotating shafts;bearings are fixed on the outer walls of the two ends of each rotating shaft; coils are adhered to the inner walls of the rollers, close to the bottom of the fixing box, of an extraction set and a speed change set; a meter head is connected between two ends of each wire far away from the coils; an output end of every meter head is connected with a single chip microcomputer; a magnet is fixed inside each roller; a gear is fixed at one end, far away from the inner wall of the fixing box, of the roller, close to the top of the fixing box, of the speed change set; a power wheel is fixed on a power output shaft of a motor; the single chip microcomputer is connected with the motor through a wire; a movement groove is formed in the bottom of each material hole; and a roller shaft is mounted in each movement groove. By using the above devices together, it is possible to keep a yarn drawing speed consistent to a yarn feeding speed, and to avoid the influence on yarn stranding quality and prevent the yarn guide device from being blocked.