30results about How to "Avoid false welding" patented technology

The invention belongs to the technical field of soldering, and particularly relates to a spot soldering fixture, which is used in a spot soldering process capable of avoiding pseudo soldering, false soldering and bursting, and is high in soldering efficiency. The spot soldering fixture comprises a fixture body, a cell storage area and a fuse storage area, and an avoidance hole is reserved between the cell storage area and the fuse storage area. Compared with the prior art, the spot soldering fixture has the advantages that a fuse and a metal strap can be effectively positioned, the height of a soldering pin can be adjusted, spot soldering quality can be improved, soldering reject ratio can be decreased, production efficiency can be improved, and cost can be saved. Besides, the invention further discloses the spot soldering process using the spot soldering fixture.

The invention provides a burn-in pole lug clamping device, which comprises a fastening piece, a positive pole comb plate, a negative pole comb plate and a press strip which is sandwiched between the positive pole comb plate and the negative pole comb plate, wherein the positive pole comb plate and the negative pole comb plate are tightly compressed through the fastening piece; two opposite surfaces of the positive pole comb plate and the negative pole comb plate are provided with a positive pole lug placing position and a negative pole lug placing position respectively; one side of the press trip towards the positive pole comb plate is provided with positive comb teeth, and one side of the press strip towards the negative pole comb plate is provided with negative comb teeth; a positive accommodating cavity matched with the shape of a positive pole lug is enclosed by the positive comb teeth and the positive pole lug placing position; and a negative accommodating cavity matched with the shape of a negative pole lug is enclosed by the negative comb teeth and the negative pole lug placing position. In the burn-in pole lug clamping device, the accommodating cavities matched with the pole lugs are correspondingly enclosed by one side of the press strip and the positive pole comb plate as well as the other side of the press strip and the negative pole comb plate respectively, so that the pole lugs cannot slip off from the cavities, and the phenomenon of false welding is prevented; and the accommodating cavities are tightly attached to the pole lugs without gaps, and lead leakage in the welding process can be prevented.

The invention discloses a welding device and a welding method for a bus-bar of a lead-acid storage battery. The characteristic that fusion welding through flame heating is full and thorough, so that inevitable quality problems of a cast-welding mode of fault welding, false welding, skip welding and the like are avoided, and the welding method and the welding device have the advantages of low production cost, simple operation, convenient maintenance, reliable welding quality and the like. On the basis, by adopting the welding device, automatic operation can be realized; the production efficiency is 10 times higher than that of manual welding operation; and welding quality and reliability are further improved.

The invention discloses equipment for automatically welding a battery circuit board and a using method of the equipment. The equipment comprises an automatic spotweld machine with a two-dimensional numerically controlled sliding table; a clamp is arranged on the two-dimensional numerically controlled sliding table; a plurality of circuit board grooves for embedding the battery circuit board are formed on the clamp; a nickel sheet groove for accommodating a nickel sheet is formed at the corresponding position of the side of each circuit board groove; and a pressing board for fixing the batterycircuit board and the nickel sheets is arranged on the upper part of the clamp. In the equipment for automatically welding the battery circuit board, the fixed clamp and the pressing board are used for fixing the circuit board and the nickel sheets, the production cost is reduced by current welding, and problems of cold solder, loose weld and the like in the prior art can be avoided; therefore, the quality of a produced product is enhanced greatly; meanwhile, influence on the environment and the health of operators can be avoided.

The invention discloses a lead and lead-free soldering method and belongs to the field of electronic assembly. The method comprises selecting a printed circuit board to make a furnace temperature testboard; when the temperature of a reflow furnace reaches the requirement, placing the furnace temperature test board and a furnace temperature tester in the reflow furnace for furnace temperature test, and obtaining a reflow profile; acquiring reflow profile data according to the reflow profile, and detecting whether the reflow profile meets standard data requirements; if the reflow profile does not meet standard data requirements, adjusting the temperature of a temperature zone corresponding to the reflow profile data; if the reflow profile meets standard data requirements, selecting lead solder paste to print the printed circuit board to be soldered; mounting a device to be soldered on a bonding pad of the printed circuit board to be soldered; and calling a reflow profile corresponding to the reflow profile data that meets the standard data requirements to perform reflow soldering. The problem that welding defects easily occur in current lead-free soldering is solved, and the effectsof ensuring soldering quality and avoiding defects such as pseudo soldering and bubbles at welding spots are achieved.

The invention is suitable for the field of LED lamp production equipment and discloses a machining locating device for LED light-emitting plates. The machining locating device is used for locking and locating the LED light-emitting plates with first limiting grooves formed in the outer side walls in a protruding mode during machining. The machining locating device comprises a base, a locating plate, a locking assembly and limiting posts, wherein the base is used for being connected with a workbench, the locating plate is arranged on the base, the locking assembly is used for locking and fixing the locating plate to the base, and the limiting posts are used for locking the LED light-emitting plates to the locating plate; at least one locating hole used for containing the LED light-emitting plates is formed in the locating plate in a spaced mode, the inner side wall of each locating hole is provided with a second limiting groove in a protruding mode, each second limiting groove and the corresponding first limiting groove are used for forming a limiting hole in an enclosed mode, and the limiting posts are fixed in the limiting holes in an inserted mode. When a wire welding sequence is conducted, the machining locating device is adopted for locking and locating the LED light-emitting plates, so the work fatigue degree of production staff can be lowered, wire welding efficiency is improved, and welding quality of wires on the LED light-emitting plates is guaranteed.

The invention discloses a manufacturing process and structure of a pipe manufactured integrated horn sleeve front fork vertical pipe. The process comprises the following steps of A, performing blanking; B, performing heading; C, performing pipe drawing; D, performing two-end trimming for the first time; E, performing pipe expanding for the first time; F, performing pipe expanding for the second time; G, performing one-end trimming; H, performing conical forming; I, performing two-end trimming for the second time; J, performing horn mouth edge-trimming and trimming; and K, performing welding. The manufacturing process has the beneficial effects that the problem of false welding between a sleeve and the bottom of the vertical tube is solved, and the potential safety hazard that falling off is prone to occurrence during riding is avoided.

The invention discloses a dipole antenna, which comprises a connector, a metal pole, a wire, a coil, a sheath and a metal tube which is embedded on the connector in a matching way. The wire comprises a signal wire and a shielding wire, wherein the shielding wire of the wire penetrates through the metal tube and is connected with the metal tube, the axial center of one end of the metal pole is provided with a stepping surface, the axial center of the stepping surface is provided with a first through hole, the signal wire of the wire is welded in the through hole, the axial center of the other end of the metal pole is provided with a second through hole, and the coil is riveted in the second through hole of the metal pole; and the coil, the metal pole, the metal tube and the wire are sleeved in the sheath, the sheath is fixedly connected with the connector, and a fixing plug is arranged between the coil and the sheath. The dipole antenna has the advantages that the frequency and signal of transmission are stable, and the product quality can be improved.

The invention discloses an ultrasonic welding head. The ultrasonic welding head comprises a handle, a variable arc rod, a swinging arc rod, a reducing part and welding teeth, wherein the variable arc rod is connected to one end of the handle, and the cross-sectional area of the variable arc rod is less than that of the handle; the swinging arc rod is connected to one end, which is far from the handle, of the variable arc rod, and the cross section of the swinging arc rod is approximately in a rectangular shape; the reducing part is arranged on at least one side surface of the swinging arc rod, in the direction from the free end of the reducing part to the swinging arc rod, the cross-sectional area of the reducing part is gradually increased, and one side surface, which is far from the handle, of the reducing part is flush with the end surface of the free end of the swinging arc rod; and the welding teeth are arranged on the end surface of the free end of the reducing part. According to the ultrasonic welding head, the reducing part is arranged, so that energy loss during ultrasonic welding can be reduced, the service life of the ultrasonic welding head is prolonged, and bad defects of false welding, over welding and the like when products are welded are avoided.

The invention relates to a preparation method of a netty heating body for an electronic cigarette. Firstly, a resistance wire is woven into a resistance wire net, and then an electrode is prepared onthe resistance wire net; and the electrode is prepared on the resistance wire net by covering the resistance wire net with conductive slurry. The method comprises a step of pre-treating the conductiveslurry, a step of covering the resistance wire net with the conductive slurry, a step of drying, a step of curing and a step of cutting. For the defects of an existing netty heating body preparationprocess, the invention provides the preparation method of the netty heating body for the electronic cigarette, which is simple in preparation process, high in stability and low in cost and is suitablefor industrial production.

The invention discloses a heating head capable of detecting a hot-melting piece. The heating head is provided with at least one hot-melting piece detector. The hot-melting piece detectors are metal detectors. The metal detectors are electro-magnetic inducted metal detectors or X-ray detection type metal detectors or ultrasonic detection type metal detectors. The hot-melting piece detectors are cylindrical. The number of the hot-melting piece detectors is four. The four hot-melting piece detectors are distributed on the side face of the heating head. The distribution shape of the four hot-melting piece detectors is rectangular. The detection heads of the hot-melting piece detectors are fixedly connected with the heating head through fixing racks. The hot-melting piece detectors are identical to the heating head in orientation. A heater comprises a heating head, wherein the heating head is the heating head capable of detecting the hot-melting piece. The correct position of the hot-melting piece is easy to find, and caused solder skips, false solder and solder deviations are avoided.

The invention discloses a shunt and a manufacturing method thereof. The shunt comprises plate-shaped wiring terminals, resistance rods and rivets, wherein the two plate-shaped wiring terminals are oppositely arranged; the two plate-shaped wiring terminals are provided with insertion holes in matrix arrangement, and the insertion holes are blind holes formed in the inner side plate surfaces of theplate-shaped wiring terminals; the multiple resistance rods are in one-to-one correspondence with the insertion holes, wherein the two ends of each resistance rod are provided with mortise holes respectively, and the mortise holes are conical; each rivet comprises a head part and a cap part, wherein the head part of the rivet extends into the corresponding mortise hole; and the two ends of each resistance rod are pressed into corresponding insertion holes of the two plate-shaped wiring terminals respectively, so that the tail part of the rivet is extruded by the hole bottom of the corresponding insertion hole.

The invention discloses a current collector assembly, a battery cell and a battery pack. The current collector assembly comprises at least two tab groups, wherein each tab group comprising a plurality of tabs arranged in a stacked manner; a conductive connection component which comprises at least three conductive connection sheets, wherein the at least three conductive connection sheets are arranged at intervals in the thickness direction of the conductive connection sheets, and one tab group is stacked between every two adjacent conductive connection sheets; and at least one of the two adjacent conductive connecting sheets is electrically connected with each tab in the tab group. According to the current collector assembly provided by the embodiment of the invention, the welding difficulty of the conductive connecting sheet and the tab group can be reduced, false soldering or pseudo soldering is avoided, the welding effect is ensured, and the overcurrent capability of current is improved.

The invention discloses a pipe gallery underground excavation primary lining plastic waterproof plate fixing device and a waterproof plate laying method, and belongs to the technical field of buildingconstruction. The pipe gallery underground excavation primary lining plastic waterproof plate fixing device comprises an embedded device, a fixing base plate and a plastic waterproof plate, wherein one end of the embedded device is welded and fixed to a grating steel arch frame in an underground excavation primary lining, the other end of the embedded device is provided with the fixing base plate, and the plastic waterproof plate is pasted and fixed through the fixing base plate. The invention further provides a laying method of the pipe gallery underground excavation primary lining plastic waterproof plate, and the fixing device is adopted for laying the waterproof plate. By the adoption of the technical scheme, the phenomena that in a traditional method, the waterproof plate is missed in welding, penetrated in welding and infirm in welding in the laying process can be effectively avoided, the firmness of installation and fixation of the plastic waterproof plate is guaranteed, and the construction quality of the pipe gallery waterproof plate and the durability of a concrete structure are improved.

The invention relates to a lithium-ion power battery tab, which comprises a metal conductor strip and a tab rubber block. The edge part of the longer end of the metal conductor strip is provided with a hole. The hole is U-shaped and the two sides of the U-shaped hole are parallel to each other. The top end of the U-shaped hole is circular arc-shaped. One or more U-shaped holes can be arranged to fix battery tabs according to the width of the metal conductor strip. No laser welding operation is required in an electrical core factory when batteries are to be grouped, wherein screws directly pass through U-shaped holes and pressing plates to tightly lock the tabs of the batteries as a whole. In this way, the equipment investment of large laser welding equipment is saved. Meanwhile, the operation is convenient and the effect is obvious. The virtual welding is avoided, and the production cost is lowered. The production efficiency is improved.

The invention belongs to the technical field of spent fuel conveying of nuclear power plants, and in particular relates to a heavy water reactor spent fuel basket welding center column butt joint welding 1#-1 comparison test block. According to the comparison test block, welding quality of the fuel basket can be ensured, safety and reliability in hoisting of the fuel basket can be guaranteed, andthe risk of falling during hoisting due to the problem that welding quality of the central column is defective is effectively avoided. The comparison test block is characterized in that the comparisontest block is of a cuboid shape wholly; a first detection hole and a second detection hole are sequentially formed in the center line of the front end surface of the test block from bottom to top; athird detection hole and a fourth detection hole are sequentially formed in the rear end surface of the test block along the oblique direction from bottom to top; a fifth detection hole, a sixth detection hole and a seventh detection hole are sequentially formed in the right portion of the lower end surface of the test block from back to front; and the detection holes are used for simulating defects existing in weld joints. According to the comparison test block, the welding quality of the center column of the fuel basket is ensured.

The embodiment of the invention provides an LED point light source wire welding machine and a welding abutting mechanism thereof. The welding abutting mechanism comprises an abutting part used for abutting against the welding ends of wire cores of a to-be-welded wire and a driving part used for driving the abutting part to move to correspondingly compress the welding ends to a welding disc of a PCB which is correspondingly connected with the welding ends in a welding manner; and the abutting part comprises a main body portion relatively fixed to the output end of the driving part and an abutting portion formed in the mode of extending from one end of the main body portion, and the end face of the end, far away from the main body portion, of the abutting portion is concaved to form a plurality of wire pressing grooves which are distributed at preset distances in parallel so as to correspondingly position and abut against the welding ends of the wire cores of the to-be-welded wire. According to the LED point light source wire welding machine and the welding abutting mechanism thereof, in the specific welding process, any one wire pressing groove of the abutting part only needs to bealigned with the corresponding welding disc of the PCB, repeated alignment is avoided, only the specific abutting part needs to be replaced for different specifications of wires, great convenience isachieved, the welding efficiency is high, and false welding and pseudo welding are avoided.

The invention discloses a novel boiler. The novel boiler comprises a boiler body, wherein the bottom of the boiler body is mounted on a base through a bracket, the boiler body is fixedly connected with the bracket, and the base is mounted on a foundation through screws; one side of the boiler body is provided with a climbing ladder, one end of the boiler body is connected with two semicircular end covers through screws, and handles are arranged on the end covers; and a fan mounted on the boiler body is arranged at the inner side of the end covers, and a motor is arranged on the fan. According to the novel boiler, by arranging the boiler body of which the welding parts are all fully welded, dummy welding and air leakage phenomena of the original boiler body are avoided, heat dissipation is reduced, and energy is saved; and by arranging sealing gaskets between the end covers and the boiler body and carrying out sealing gasket treatment on all of the other pipeline joints of the boiler body, a great sealing effect is ensured at the parts, in contact with the boiler body, of the end covers, air leakage is prevented, heat dissipation is reduced, and energy is saved.