4results about How to "No bumps" patented technology

The application belongs to the field of semiconductor chip assembly, and particularly relates to a method for eutectic sintering of semiconductor chips. The method uses formic acid as a protective agent during eutectic sintering, and scientifically sets the eutectic sintering temperature rising and constant temperature programs, so that heat can be effectively and uniformly transferred to the solder and the chip, the solder can be stably melted, the formation of voids is reduced, and the adverse effects of the voids on the qualified rate of the solder piece are reduced.

The utility model discloses an air bag assembly in a vulcanizing machine for tire repair and belongs to the technical field of tire repair. A soft air bag is arranged on the outer side face of the frame body, high-temperature cloth is arranged outside the soft air bag, a first threaded hole is formed in the end of the frame body, a second threaded hole is formed in the pressing plate, the second threaded hole corresponds to the first threaded hole, and screws are screwed into the second threaded hole and the first threaded hole. The soft air bag is fixed with the frame body through a mounting mechanism. Side baffles are fixed to the two sides of the outer side face of the frame body. Each side baffle located at the corner of the L-shaped structure frame body is provided with an arc-shaped extension, and the two ends of each side baffle are fixed through connecting plates. Reinforcing ribs are fixed to the inner side face of the frame body. The soft air bag disclosed by the utility model can better adapt to the shape of the tire and the repair requirement in the vulcanization process, and provides necessary support for the tire through uniformly distributed pressure, so that secondary deformation of the tire in the repair process is avoided, the repaired tire is ensured to have no recess or bulge, the repair surface is smooth, and the repair quality is improved. And the repairing quality and the durability of the tire are obviously improved.

The application discloses a bus multi-material resistance welding process and a gradient current-distribution electrode structure and belongs to the technical field of resistance welding.The application integrates an electrode quick-change mechanism in a single welding station, can automatically switch a chromium-zirconium-copper inlaid tungsten-copper electrode and a graphite electrode, respectively completes two types of welding procedures of copper braided wire-copper plate and copper plate-L-shaped copper bent plate, adopts a gradient current-distribution electrode with a waist-shaped through groove on a working surface in a matched mode, realizes uniform distribution of current in a large-area welding area with a size of 21*15 mm or above, simultaneously constructs a full-process automatic production line of "welding-air knife cleaning-CCD visual detection-automatic sorting", and effectively solves problems of uneven welding current of large-area copper workpieces, low electrode change efficiency, easy interference of detection by cooling water and the like, electrode switching time is less than or equal to 5 s, the welding point drawing force is stable, the bus welding full-process unmanned operation can be realized, and production efficiency and product consistency are greatly improved.

The application discloses an automatic bottle overturning device, which comprises a first conveying line for conveying and cleaning bottles, and a bottle grabbing mechanism for grabbing bottles from the first conveying line; the bottle grabbing mechanism comprises a bottle grabbing robot and a bottle overturning robot which cooperate with each other; the bottle grabbing robot comprises a mechanical arm, and a bottle sucking clamp which can be overturned is arranged at an operating end of the mechanical arm; the bottle overturning robot comprises a bottle clamping clamp for receiving the bottles unloaded from the bottle sucking clamp, and a driving mechanism for driving the bottle clamping clamp to complete the actions of grabbing and placing bottles; the driving mechanism comprises a rack, and a sliding rack structure is arranged on the rack and used for driving the bottle clamping clamp to lift and translate; and a converging bottle pushing assembly is further arranged and used for pushing the bottles unloaded from the bottle clamping clamp to a second conveying line. The application discloses an automatic bottle overturning mechanism with a novel structure, and essentially solves the technical problem that it is difficult to adjust the posture of bottles in an automatic production line.