81results about How to "Precise Control of Spacing" patented technology

The invention provides a screen protection paste. The screen protection paste comprises a protection paste (1), a back-adhesive layer (2) and a backing paper (3), wherein a screen protection area (11) and a panel protection area (12) are formed on the back of the protection paste (1); the front surface of the back-adhesive layer (2) is clung to the back of the protection paste (1); the front surface of the backing paper (3) is connected to the back of the protection paste (1) by the back-adhesive layer (2); an expanding surface of the back-adhesive layer (2) is only limited to the panel protection area (12); a plurality of lug bosses (10) extend from the protection paste (1) to the back direction; and a clearance (9) is formed between the screen protection area (11) and the backing paper (3). According to the screen protecting paste, the static electricity can be removed by the lug bosses, thus the paste is easier to be coated; and the lug bosses are manufactured by means of die casting, the process is simple and stable, and the yield is high.

The invention relates to a rolling device for a spiral heat exchange pipe core in a heat exchanger, and solves the technical problems of low accuracy, inconvenience in use and low production efficiency of an existing rolling device for a spiral heat exchange pipe. The rolling device for the spiral heat exchange pipe core in the heat exchanger comprises a machine body, a roller, a main shaft speedreduction servo motor, a feeding servo motor, a screw rod, a nut seat, a compression roller frame base, a compression roller frame, an air cylinder, a compression roller, two guide rails, a touch control screen and a main controller. Two ends of the roller are connected with the machine body through bearing seats; the main shaft speed reduction servo motor is connected with one end of the roller through a transmission mechanism; two ends of the screw rod are connected with the machine body through bearing seats; an output shaft of the feeding servo motor is connected with the screw rod througha transmission mechanism; the nut seat is connected with the screw rod; the compression roller frame base is fixedly connected with the nut seat; the compression roller frame is connected with the compression roller frame base; the compression roller is connected with the compression roller frame; the air cylinder is connected between the compression roller frame base and the compression roller frame; and the two guide rails are connected onto the machine body side by side. The rolling device for the spiral heat exchange pipe core in the heat exchanger provided by the invention is widely applied to rolling the spiral heat exchange pipe.

The invention discloses integrated construction equipment for binding and lifting a continuous beam steel reinforcement framework. The integrated construction equipment is characterized in that a steel reinforcement binding fixture for binding the steel reinforcement framework is arranged on a cast bridge floor, a truss-type slide lifting appliance is longitudinally arranged above the steel reinforcement binding fixture, the front end of the truss-type slide lifting appliance is supported on a front upper beam of a cradle through a front end support, the tail end of the truss-type slide lifting appliance is supported on the cast bridge floor through a tail support, a crown block is mounted on the truss-type slide lifting appliance, and the steel reinforcement framework can be integrally lifted via a steel reinforcement hanger lifted by the crown block. The steel reinforcement binding fixture is mounted on the constructed bridge floor and used for binding the steel reinforcement framework, steel reinforcements are lifted into the cradle by the truss-type slide lifting appliance, steel reinforcement binding and beam section construction are realized simultaneously, and construction time is greatly shortened.

The invention provides a cleaning device for a welded circuit board. The cleaning device comprises a shell device fixedly connected to a volatilization device through a bolt, a supporting structure connected to the shell device in a sliding mode, a turn-over device connected to the supporting structure through a rotating shaft, an adjusting device connected to the turn-over device through a rotating shaft, a positioning device connected to the adjusting device in a sliding manner, a dust removal structure connected to the shell device through a rotating shaft, and a cleaning device fixedly connected to the shell device. The shell device is arranged, the mode that an isolation plate is installed on the shell device is adopted, the interior of an installation box body can be separated, and through the arrangement of the isolation plate, board washing water can be prevented from splashing in the cleaning process of the circuit board, and the safety of the equipment in the using process is effectively improved.