39results about How to "Reduce defective welding rate" patented technology

The present invention relates to a laser reflow device, which can implement shortening of a tact time for one object to be bonded and the acceleration of a bonding operation for all of the plurality of objects to be bonded and comprises: an object-to-be-bonded transferring part including a stage for supporting the object to be bonded, and transferring the object to be bonded; a laser emitting partfor converting a laser into a surface light source form and emitting the same to the object to be bonded, and a laser emitting part transferring part for moving the laser emitting part to an emissionposition or a standby position; and a beam-transmitting plate independently provided separately from the laser emitting part and allowing the laser having the surface light source form to pass therethrough, and a beam-transmitting plate transferring part for moving the beam-transmitting plate to an operation position or the standby position.

This invention discloses a shell of electric core and a core using it, in which, the shell includes a drum, a top cover plate and a bottom cover plate, and the drum is a drum with a bottom with a through hole and an paerture at the top, a groove along the circle is set on the bottom plate and a groove along the circle is set on the drum of the shell. Since the heat conductivity of air is much lower than that of metal, it can stop losing of heat at the welding place when welding by laser effectively by grooves along the circle directin on the drum bottom and on the bottom plate so as to deepenthe depth fusion under definite laser strength.

This invention discloses a core shell including a drum and up and down cover plates, in which, said drum is a drum with bottom and an aperture at the top, the bottom is set with a through hole characterizing that a convex stand is set along the edge of the down cover plate and a convex stand is also set along the edge of the through hole on the bottom of the drum. This invention also discloses a core using the shell. Since the heat conductivity of air is much lower than that of metal, it can stop losing of heat in laser welding effectively by setting a circle of convex stand along the edge ofthe through hole on the bottom and a convex stand on the bottom cover plate so as to deepen the depth of fusion under definite laser strength.

The invention relates to an aluminum alloy for manufacturing cell shell, which is composed of the following components in weight percentage: 0.1%<Si<0.3%, 0.2%<Fe<0.55%, 0.12%<Cu<1.0%, 0.25%< Mg<0.6%,0.5%<Mn<2%, 0.05%<Zr<0.3% and 0.05<=Ti<=0.1, and other elements are 0.05% at most for each and 0.15% at most for all and the rest element is aluminum. The invention provides an aluminum alloy for manufacturing cell shell with high tensile strength, high yield strength and low elongation percentage.

The invention discloses a miniature ultrathin unidirectional rectifier bridge device which comprises four rectification chips for forming a rectifier bridge circuit, an upper sheet unit, a lower sheet unit and a packaging body. The rectification chips are arranged between the upper sheet unit and the lower sheet unit. The upper sheet unit is arranged opposite to the lower sheet unit, and the cross section of the upper sheet unit and the lower sheet unit is Z-shaped. The upper sheet unit and the lower sheet unit both comprises two leading-out terminals, the lower surfaces of which share the same plane with the bottom surface of the packaging body. The upper sheet unit and the lower sheet unit are both provided with a flat welding pad and a projection welding pad with bumps. Warps for promoting the upper sheet unit and the lower sheet unit to be combined with the rectification chips are arranged on the flat welding pad. By the miniature ultrathin unidirectional rectifier bridge device and its processing technology, through the arrangement of the warps on the flat welding pad and by man-made creation of sheet atoms for crystal orientation layout, sheets are welded with the chips more perfectly during the welding process due to crystal orientation effect of the two materials. Thus, welding reject rate is reduced, product reliability is raised, cost is decreased, and resources are saved.

The invention provides a connecting piece laser processing method based on binocular vision, and relates to the technical field of conductive connection. The method is characterized in that in the connecting process of a conductive piece, the laser power is fed back in real time according to a gray scale step point formed in a depth image by a fusion point when brazing filler metal is fused; in the filling process, the welding speed is optimized according to the gray scale of the depth image; and the speed optimization method is characterized in that the welding motion speed is determined according to the gray scale of the image, the gray scale average value is taken as a base point, the speed is slowed down when being less than the value, and the speed is increased when being larger thanthe value. According to the method, welding track and speed planning is optimized according to the depth image, and the connecting processing efficiency of the conductive piece is improved.

A manufacturing process of high definition digital interface includes assembling wire rubber plug, rubber plug in stab mode, medium rubber plug and automatic welding unit on said digital interface; pressing each core wire into grooves of wire rubber plug and rubber plug in stab mode, brushing tin solder on core wires and clamping them on automatic welder for carrying out automatic welding, shining light on core wire and terminal wiring end by welder to weld core wire on terminal wiring end by melting tin solder with heating for finalizing said welding at only one time.

The invention relates to a welding method and a welding system for an electrode sheet of a surge protector. The welding method provided by the present invention includes: providing a surge protector to be welded, the surge protector includes a housing, a slider and an electrode sheet, the slider is arranged between the housing and the electrode sheet, the electrode sheet includes a welding end, The shell is provided with a pad area for welding electrode sheets; inject solder paste into the pad area, attach the solder end to the solder paste, and obtain the first workpiece; obtain the first workpiece, adjust and fix the solder end and pad The distance between the areas, so that the thickness of the solder paste is less than or equal to the distance between the slider and the pad area, and the solder paste is filled between the solder end and the pad area, and part of the solder paste is squeezed to the outside of the solder end edge, get the second workpiece; get the second workpiece, and perform reflow soldering. Under the premise of not affecting the safety protection effect of the surge protector, qualified solder joints can be obtained, and the welding defect rate can be reduced. It is suitable for mass production of surge protectors with excellent performance and stability.