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8536 results about "Spot welding" patented technology

Resistance spot welding (RSW) is a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current. It is a subset of electric resistance welding. Work-pieces are held together under pressure exerted by electrodes. Typically the sheets are in the 0.5 to 3 mm (0.020 to 0.118 in) thickness range. The process uses two shaped copper alloy electrodes to concentrate welding current into a small "spot" and to simultaneously clamp the sheets together. Forcing a large current through the spot will melt the metal and form the weld. The attractive feature of spot welding is that a lot of energy can be delivered to the spot in a very short time (approximately 10–100 milliseconds). That permits the welding to occur without excessive heating of the remainder of the sheet.

Seat back frame for vehicle seat

A seat back frame for a vehicle seat includes first and second side members spaced apart from each other, each of the first and second side members being made of ultra-high tensile strength steel, the first side member having a first longitudinal body of a substantially U-shape in cross-section, the first longitudinal body comprising a pair of first spaced apart flange sections and a first main plate section interconnecting the first spaced apart flange sections, the first side member having a first upper region and a first lower region, the second side member having a second longitudinal body of a substantially U-shape in cross-section, the second longitudinal body comprising a pair of second spaced apart flange sections and a second main plate section interconnecting the second spaced apart flange sections, the second side member having a second upper region and a second lower region, an upper member arranged between the first and second upper regions of the first and second side members, the upper member being made of ultra-high tensile strength steel, the upper member having first and second end portions, the upper member being mounted, by spot-welding, to the first and second upper regions of the first and second side members with the first and second end portions thereof being fitted in the first and second side members, and a lower member arranged between the first and second lower regions of the first and second side members, the lower member being made of ultra-high tensile strength steel, the lower member having third and fourth end portions, and the lower member being mounted, by spot-welding, to the first and second lower regions of the first and second side members with the third and fourth end portions thereof being fitted in the first and second side members.
Owner:TS TECH CO LTD

Self-piercing frictional rivet welding connecting device

The invention relates to a self-piercing frictional rivet welding connecting device which belongs to the technical field of rivet welding. The device comprises a driving needle, a blank holder, an annular guide slot, an annular positioning spring, a semi-tubular rivet and a female die, wherein the driving needle is sleeved in the blank holder; the semi-tubular rivet is positioned below the driving needle; the annular guide slot is formed in the blank holder; the annular positioning spring is arranged in the annular guide slot; the semi-tubular rivet is positioned on the annular positioning spring; and the female die is arranged below the semi-tubular rivet. The high-strength steels are softened by using the friction heat generated by speedily rotating the rivet so the percentage of elongation of the high-strength steel is increased, the riveting force and the rigid requirement on equipment are reduced, the joint efficiency of friction stir spot welding is improved, the technical shrinkage pool is eliminated, the joint strength is efficiently increased, the mechanical-solid phase double joint is realized and the static and dynamic mechanical properties of the joint are greatly improved. The connecting device of the invention is applied to the connection between the light alloy and the high-strength steel and is also applied to the connection between the different light alloys and between different high-strength steels.
Owner:SHANGHAI JIAO TONG UNIV +1

Automatic spot welding equipment

The invention relates to automatic spot welding equipment which comprises a stand and a workbench arranged on the stand, wherein the workbench is provided with a battery feed mechanism, a steel band feed mechanism, a transfer mechanism, a welding tab cut-off mechanism, a welding mechanism and a good product blanking mechanism, wherein the battery feed mechanism and the steel band feed mechanism are respectively used for feeding a battery and a steel band connected with a welding tab into a welding station; the transfer mechanism is used for bearing and transferring the battery; the welding tab cut-off mechanism is used for cutting off the welding tab on the steel band; the welding mechanism is used for welding the welding tab to the anode end and the cathode end of the battery; the transfer mechanism is provided with a battery clamping seat used for clamping the battery, and an elastic piece inwards pressing the battery is arranged on the battery clamping seat; and the mechanisms are connected with a master control circuit. In the invention, the structural design of the equipment is reasonable, and the automatic feeding, the welding and the property detecting of the battery and the steel band are realized by adopting electrical control, thus the equipment has the advantages of high feed speed, high welding precision and good welded product quality, improves the quality and the production efficiency of the welded product, reduces the labor intensity of workers, saves the production cost and is particularly suitable for producing batteries welded with welding tabs in batches, thereby improving market competitive force of enterprises.
Owner:GUANGDONG LYRIC ROBOT INTELLIGENT AUTOMATION CO LTD

Connection and installation method for LED filaments

The invention provides a connection and installation method for LED filaments. The connection and installation method is used for assembling wicks in filament type LED bulbs. As the difference from the prior art of welding the lead-out ends of the LED filaments to a guide wire of a glass core column through a spot welding method, the electrode lead-out ends of the LED filaments are connected through elastic metal thin wire spiral parts, and therefore the LED filaments are connected in series one by one in an end-to-end manner according to the polarity to form a multi-joint LED filament series-connection system which can be bent. Then, the metal thin wire spiral parts at the head lead-out end and the tail lead-out end of the filament series-connection system are clamped on and fixed to corresponding core column side rod guide wires, and the metal thin wire spiral parts between the adjacent filaments are placed on corresponding filament hooks on the core column one by one so that the filaments can be arranged in order. By means of the connection and installation method, the defects that in the prior art, due to spot welding, the production efficiency is low, the finished product rate is low, and filament stress is large are overcome, and the production efficiency of filament type LED bulbs can be easily improved and the finished product rate of the filament type LED bulbs can be easily increased.
Owner:厦门银旭工贸有限公司

Automatic welding machine of aluminum-nickel compound piece of lithium ion battery cover plate

The invention provides an automatic welding machine of an aluminum-nickel compound piece of a lithium ion battery cover plate, consisting of a feeding mechanism A, a feeding turnover mechanism B, a turnplate mechanism C, a detection mechanism D, a nickel piece feeding mechanism E, a spot-welding machine F, an ultrasonic welding mechanism G, a banking mechanism H and an automatic control mechanism, wherein the feeding mechanism A, the feeding turnover mechanism B, the turnplate mechanism C and the detection mechanism D are arranged on the tabletop of the automatic welding machine; the nickel piece feeding mechanism E, the spot-welding machine F, the ultesonic welding mechanism G and the banking mechanism H are arranged on the turnplate mechanism C; the aluminum-nickel compound piece is placed on the lithium ion battery cover plate through the feeding mechanism A, the feeding turnover mechanism B, the turnplate mechanism C, the detection mechanism D and the nickel piece feeding mechanism E; and the lithium ion battery cover plate is automatically welded with the aluminum-nickel compound piece through the spot-welding machine F, the ultrasonic welding mechanism G and the banking mechanism H. The invention ensures that the whole process flow realizes the automation, changes the traditional mode for manually finishing miscellaneous work, librates the large amount of labor force, greatly improves the work conditions, greatly increases the yield, greatly reduces the manufacturing cost and simultaneously and effectively ensures the quality of products.
Owner:HUNAN HUAHUI NEW ENERGY
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