3002 results about "Soldering" patented technology

The invention discloses an automatic bending and tin immersion device and method based on electromagnetic coil pins, and the device comprises a loading turntable structure which is provided with a controllable rotary turntable surface and a plurality of groups of electromagnetic coil stations; the loading and unloading carrying structure is arranged corresponding to the loading turntable structure; the pin bending structure is used for outputting stamping kinetic energy to bend electromagnetic coil pins; the soldering-aid dipping structure comprises a soldering-aid shifting and transposition assembly and a soldering flux lifting assembly, the soldering-aid shifting and transposition assembly is provided with a transposition kinetic energy output end, and the soldering flux lifting assembly is provided with a soldering flux lifting end; the pin tin immersion structure comprises a tin immersion transfer assembly and a tin melting liquid storage assembly. And the impedance detection structure comprises an upper and lower limit alarm resistance meter and a test probe, and can be arranged corresponding to the plurality of groups of electromagnetic coil stations in a switchable manner. The problems that in the prior art, bending and tin immersion processes of electromagnetic coil pins generally depend on manual operation, so that the overall automation degree, the operation efficiency and the qualified rate are low, and the labor cost is high are solved.

The invention relates to an intelligent visual identification technology-based cold solder joint microcrack intelligent discrimination method, which comprises the steps of collecting an initial RGB image of a to-be-detected welding spot, carrying out two-dimensional discrete cosine transform and inverse two-dimensional discrete cosine transform on the initial RGB image to obtain an enhanced image, and fusing the enhanced image with an R channel of the initial RGB image to obtain a fused image; forming a dual-channel feature map; calculating the phase consistency of the dual-channel feature map, and obtaining a suspected candidate region of the pseudo soldering microcrack through an adaptive threshold segmentation method; acquiring an RGB image sequence of a continuous time sequence of the welding spots, and performing anomaly detection to obtain an abnormal region set; and constructing a welding spot thermal diffusion model, and inputting the geometric parameters and the environmental parameters in the abnormal region set into the welding spot thermal diffusion model to obtain a final judgment result of the pseudo soldering microcracks. According to the method, through multi-dimensional feature fusion and continuous time sequence dynamic tracking, the detection precision of the pseudo soldering microcracks is remarkably improved, the false detection rate is reduced, and the final judgment result is more accurate.

The invention relates to the field of image data processing, in particular to a PCBA (Printed Circuit Board Assembly) surface defect detection method based on computer vision, which comprises the following steps of: determining a welding spot area in a surface grayscale image of a PCBA; determining an initial welding spot edge contour of the welding spot area; according to the gradient intensity and gradient direction of the current edge pixel point in the initial welding spot edge contour in the plurality of communication directions, determining the gradient environment anomaly degree of the current edge pixel point; determining the loss degree of the current edge pixel point according to the gray value of each pixel point in the neighborhood window of the current edge pixel point; correcting the edge contour of the initial welding spot by using the abnormal degree and the loss degree of the gradient environment; and comparing the final welding spot area edge contour with the standard welding spot edge contour so as to identify whether the welding spot area has a pseudo soldering defect or not. The accuracy of identifying whether the pseudo soldering defect exists in the welding spot area or not is improved, and the accuracy of judging the quality of the PCBA board is improved.

The invention relates to a tin ring automatic focusing laser soldering tin fixing and 3D welding spot detecting system, and belongs to the technical field of industrial automatic laser processing. The system is characterized in that a tin ring preparation module identifies pins in real time and dynamically optimizes winding parameters through visual positioning and a self-adaptive winding head, and performs defect identification and pre-repair analysis through multispectral imaging; the soldering tin positioning module is used for switching stations through a rotary table, and precise positioning and clamping of a product are realized by combining laser contour sensing and a focusing compensation algorithm; the laser tin soldering module can visually identify tin materials and automatically call welding parameters, laser power and action time are regulated and controlled in real time by establishing a regional heat conduction model, and gradient cooling is implemented after welding; and the 3D detection module adopts dual-mode scanning, constructs a welding spot three-dimensional model based on fusion data, recognizes microcracks through super-resolution processing, and discriminates the welding spot quality. And automation and intellectualization of the whole process from tin ring preparation to welding spot quality detection are achieved.

The invention discloses a PCB surface defect detection method and system, an electronic device and a medium, and relates to the technical field of defect detection, the connection condition caused by excessive tin soldering of a tin bridge or adjacent welding spots can be automatically identified by judging the connection state between the welding spots, an overall detection instruction is triggered, early detection is facilitated, connectivity defects are avoided, and the detection efficiency is improved. And the welding spot connection reliability is improved. The image is divided into a plurality of image blocks, the texture difference data of each image block is obtained, the texture abnormal state of the surface of the PCB can be finely analyzed by calculating the texture deviation coefficient, the subtle texture change in different areas can be identified by the block analysis method, and surface defects such as scratches and bubbles on the surface of the PCB can be accurately detected. And in combination with the texture deviation coefficient and the geometric features of the welding spots, unified normalization fitting is performed on the defect features to generate the defect recognition index, so that the defect features of different types can be captured, and the robustness and accuracy of the model can be improved.

The invention relates to the technical field of material processing control, and discloses a method for efficiently cutting a vacuum brazing soldering lug. The method comprises the following steps: firstly, receiving material parameters and target geometrical shape data of a to-be-cut soldering lug, and generating and optimizing an initial cutting track based on a preset algorithm; in combination with real-time temperature field monitoring data, thermal stress distribution is calculated through a finite element analysis method, and the cutting speed and laser power parameters are dynamically adjusted; and then the cutting precision and the equipment energy consumption are synchronously optimized through a multi-objective optimization algorithm, and final cutting parameters are output to a vacuum brazing control system. In addition, signals are collected in real time during cutting to recognize abnormity, and algorithm weights are calibrated by comparing geometric parameters after cutting. The cutting precision and efficiency can be effectively improved, equipment energy consumption is reduced, cutting abnormity is treated in time, self-optimization of the cutting process is achieved, and the method is suitable for the production field with the high requirement for vacuum brazing piece cutting.

The invention relates to the field of photovoltaic cell production, and discloses a main-grid-free photovoltaic cell series welding method and main-grid-free photovoltaic cell series welding device.The method comprises the steps that main-grid-free photovoltaic cell pieces and welding strips are conveyed to a pre-welding device, heating is conducted, so that the welding strips are pre-fixed to the surfaces of the corresponding main-grid-free photovoltaic cell pieces, and cell series arrays are obtained; synchronously transmitting the battery series and the back film layer to a heating and pressurizing device, and laying a front film layer on the battery series; and controlling the heating and pressurizing device to move to be in contact with the front film layer on the battery string, and heating and pressurizing the front film layer to obtain the battery string. The method comprises the following steps of: pre-fixing a battery piece and a welding strip, laminating, and heating and pressurizing a front film layer. During heating and pressurizing, a hold-down tool does not need to be placed on the front face, uneven heating is avoided, the problems of film bubbling and pseudo soldering are avoided, the welding quality can be guaranteed, and the conditions of pseudo soldering and grid breaking are reduced. And heating and pressurizing are carried out after pre-welding, so that the solder strip can be prevented from deviating.

The invention discloses a tunnel-type high-speed in-situ eutectic soldering station, chip mounting equipment and a chip mounting method. The device comprises a first supporting plate, a second supporting plate, a eutectic temperature control plate group and a supporting module, wherein the first supporting plate moves horizontally; the second supporting plate is arranged on the first supporting plate in an up-down moving manner; the eutectic temperature control plate group is arranged on the second supporting plate; the first driving module is arranged on the first supporting plate and drives the second supporting plate to move up and down; the second driving module drives the supporting module to move horizontally; the eutectic temperature control plate set comprises a preheating plate, an eutectic table and a cooling plate which are sequentially arranged in the movement direction of the base plate. The eutectic welding requirement of a plurality of chips on a single substrate can be met, and the chip mounting efficiency of an intensive circuit board is improved.

The utility model discloses a full-automatic tin soldering machine which comprises a tin soldering table, a tin soldering mechanism, a visual detection device, a tin breaking and supplying assembly and a dust removal device, workpiece guide rails are arranged on the tin soldering table, each workpiece guide rail is connected with a sliding table in a sliding mode, jigs are placed on the sliding tables, and workpieces to be welded are contained on the jigs. A first support and a second support are fixedly arranged above the tin soldering table, a first sliding rail is arranged on the first support, a second sliding rail is arranged on the second support, the first sliding rail is parallel to the second sliding rail, the first sliding rail and the second sliding rail are both perpendicular to a workpiece guide rail below, and a visual detection device is slidably connected to the first sliding rail. The visual detection device can identify and position the pin welding position on the workpiece, the second sliding rail is slidably connected with a tin soldering mechanism, the tin breaking and supplying assembly is connected to the side face of the tin soldering mechanism, and the dust removal device is arranged behind the tin soldering table. Whole-process automatic operation of welding spot positioning, automatic tin supplying and breaking and automatic tin soldering can be achieved, and the automatic tin soldering machine has the advantages of being stable and rapid in operation and high in safety.

The invention provides a capacitor core welding strength detection device, and relates to the technical field of capacitor detection. The detection device comprises a rack, an operation table is arranged in the rack, a clamping mechanism used for clamping a capacitor is arranged on the operation table, a detection mechanism used for metering tension is installed on the side, away from the operation table, of the rack, and a clamping mechanism used for clamping a capacitor lead is arranged in the rack. A driving mechanism for driving the clamping mechanism to move towards the detection mechanism is arranged in the rack, and the measuring end of the detection mechanism is mounted in the clamping mechanism; the clamping mechanism and the transmission mechanism are matched together, so that the clamping mechanism can be driven to clamp the lead of the capacitor, and the traction force on the lead of the capacitor can be gradually increased in the process of driving the clamping mechanism to move away from the direction of the clamping mechanism; therefore, whether pseudo soldering or other quality problems occur to the lead of the capacitor can be detected.

The invention relates to the technical field of ICT testing, in particular to an efficient online ICT intelligent testing device which comprises a machine table, a tester is fixedly mounted at the top of the machine table, an air cylinder is fixedly mounted at the top of the tester, a mounting seat is fixedly mounted at the output end of the air cylinder, and limiting rods which are symmetrically arranged in pairs are mounted in the tester. A limiting rod is arranged at the top end of the mounting seat, a test board slides on the outer wall of the limiting rod, an air pump is fixedly mounted at the bottom end of the test board, a clamping mechanism for fixing a circuit board is arranged at the top end of the test board, and a pressure detection mechanism for detecting the circuit board is arranged at the bottom end of the mounting seat. The air inlet speed is automatically adjusted through the thickness of the circuit board, the circuit board is protected, pseudo soldering spots are accurately positioned through the air cylinder, the probe and the displacement sensor, the air cylinder is used for driving components to move, the welding spots with cracks are detected through vibration, and the detection efficiency and reliability are improved.

The invention discloses a preparation method of a slot wire for a superconducting wire. The preparation method comprises the following steps: manufacturing a copper bar into a copper flat wire through a drawing process; soaking the copper flat wire in a soldering flux, and then washing and air-drying the copper flat wire to obtain a prefabricated copper flat wire; combining the plurality of prefabricated copper flat wires according to the cross section structure of the superconducting wire; performing induction heating welding on the plurality of combined prefabricated copper flat wires through a welding mold to obtain a copper groove wire; performing water cooling, cleaning and drying on the copper slot wire to obtain a copper slot wire with a clean surface; and screening the copper slot line through a laser diameter measuring instrument and eddy current flaw detection equipment to obtain a copper slot line finished product. The copper slot wire with the groove in the surface is obtained by welding the copper flat wire, integrated forming of the structural slot wire is achieved, the production efficiency is improved, welding and finishing forming are carried out by designing dies of different structures, the surface quality of the copper slot wire is improved, the slot wire of a high-precision complex structure is obtained, the drawing speed is high, and the production cost is low. And large-scale production of the copper slot line is facilitated.

The invention discloses a printed circuit board welding spot three-dimensional shape high-precision analysis method and system, and the method comprises the steps: constructing a high-precision three-dimensional model, and obtaining three-dimensional point cloud data; acquiring feature data of a welding spot region, and judging whether pseudo soldering occurs or not through fusion analysis; the surface roughness and reflectivity loss data of a welding spot area are obtained, the welding spot solidification line density is calculated, the cold welding direction disorder degree is obtained, and the cold welding condition is judged; the minimum distance between adjacent welding spots is obtained, and the bridging condition is detected in combination with conductive path curvature verification and material diffusion characteristics; acquiring the surface texture gradient and reflectivity attenuation data of the welding spot, and performing welding spot oxidation treatment; and performing model training through a convolutional neural network, constructing a welding spot analysis model, and obtaining a welding spot analysis result. The method has the advantages that through high-precision three-dimensional scanning and convolutional neural network deep learning, pseudo soldering, cold welding, bridging and oxidation defects of the welding spots of the printed circuit board are accurately detected and analyzed, and the production efficiency and the product reliability are remarkably improved.

The invention discloses a semi-automatic lining plate butt-welding machine, relates to the technical field of butt-welding machines, and aims to solve the problems that a welding head at a welding position is adhered to a lining plate due to contact between the welding head and the lining plate, and the lining plate is pulled and damaged due to adhesion when the welding head is lifted. According to the semi-automatic lining plate butt-welding machine, a side pressing block is matched with an inner cushion block, a lining plate and a mother plate are pressed tightly before welding, the lining plate and the mother plate are made to be attached tightly, pseudo soldering caused by low attaching degree during welding is avoided, meanwhile, after welding is completed, the lining plate and the mother plate continue to be pressed tightly when a pressure welding head is lifted through deformation compression of an elastic cushion block, and the welding efficiency is improved. The lining plate is prevented from being damaged due to the fact that the lining plate is pulled along with the movement of the welding head when adhesion occurs at the contact position of the welding head and the lining plate.

The invention discloses a microwave-based polyethylene pipe hot-melt welding defect detection system, and relates to the technical field of polyethylene pipe hot-melt welding joint defect detection, and the method comprises the following steps: firstly, collecting microwave reflection signals of normal and defect-containing hot-melt welding joints, and carrying out normalization; the processed signals are sliced, sliced fragments are labeled, time domain and frequency domain features are extracted, and a defect sample data set is constructed; carrying out feature selection on the extracted features, and selecting 10 features with the highest contribution to the recognition accuracy; constructing a support vector classifier model, performing training by using the data set after feature selection, and performing hyper-parameter optimization on the model to obtain an optimal classification model; designing and realizing a polyethylene pipe hot-melt welding defect detection system, and detecting whether a welding position contains defects and defect positions or not; according to the invention, accurate detection of polyethylene pipe hot melting welding defects can be realized, defects and positions can be rapidly identified, and technical support is provided for quality safety detection of polyethylene pipes.

The invention discloses a low-temperature solder for a photovoltaic solder strip of an HJT heterojunction and a preparation method of the low-temperature solder, and belongs to the technical field of packaging materials. The solder is based on tin-bismuth alloy, and the high-entropy alloy nanoparticles and the soldering flux are added, so that the melting point of the solder is remarkably reduced, reliable interconnection is achieved at the temperature lower than 250 DEG C, and damage of high temperature to an HJT battery piece is avoided. The low-temperature solder has excellent wettability, mechanical strength and corrosion resistance, the reliability of a photovoltaic module can be effectively improved, and the service life of the photovoltaic module can be effectively prolonged. In addition, lead-free environment-friendly materials are adopted, and the green and environment-friendly requirements are met. The preparation method is simple and feasible and is suitable for large-scale production. The invention provides an efficient, environment-friendly and low-cost interconnection material and process for the HJT heterojunction battery piece, and has a wide application prospect.

The invention discloses ultrasonic high-speed welding equipment and a welding method.The equipment comprises a rack, an electric control mechanism, an executing mechanism and a monitoring mechanism, and the executing mechanism comprises a first lifting assembly, a linear driving part, a welding executing assembly and a second lifting assembly; the linear driving piece is used for generating pressure for pressing the welding execution assembly on the to-be-welded piece, and the welding execution assembly is used for providing high-frequency vibration to achieve ultrasonic welding; the monitoring mechanism is used for monitoring the pressure of the linear driving part on the welding execution assembly, the pressure of the second lifting assembly on the bottom die, the real-time position of the welding execution assembly and the real-time position of the bottom die. The electric control mechanism is used for controlling the execution mechanism to operate according to a preset program and monitoring data obtained from the monitoring mechanism. According to the scheme, the welding efficiency can be improved, and pseudo soldering is reduced.

The invention relates to the technical field of mechanical arms, and discloses a self-adaptive rapid assembly system and method for a laser radar, and the system comprises an acquisition module, a mechanical arm is provided with a clamping claw and a welding head; the control module is electrically connected with the acquisition module and the mechanical arm, and the control module comprises an acquisition unit which controls the mechanical arm to place a shell on a working plane and controls the mechanical arm to press a crimping stud into a crimping hole site; the judgment unit collects the image of the crimped shell to judge whether the plane is flush or not; when it is judged that the plane is flush, the processing unit controls the mechanical arm to clamp the mainboard module, and the crimping stud penetrates through a mounting hole position of the mainboard module; determining the amount of soldering tin, and controlling the welding head to fix the mainboard module; the adjusting unit collects image data of the welding position to judge whether welding defects exist or not, and when the defects exist, the welding head is controlled to conduct repair welding. Through the acquisition module, the mechanical arm and the control module, automation of laser radar assembly is realized, and the assembly precision is improved.

The invention provides a method for preparing a preset gold-tin soldering ring of a cover plate by using ultrafast laser processing, which comprises the following steps: S1, constructing a surface microstructure of the cover plate by using the ultrafast laser: selecting the cover plate with a specified size, processing by using the ultrafast laser, constructing the microstructure on the surface of the cover plate under nitrogen / argon mixed protective gas, and forming the microstructure on the surface of the cover plate by using the ultrafast laser; then, surface metallization treatment is completed through a multi-stage plating process, and a composite plating layer is formed; and S2, vacuum hot-pressing pre-melting of a welding ring: stamping a gold-tin alloy to form a sheet-shaped welding ring, and then pre-melting the gold-tin welding ring on the cover plate with the microstructure obtained in the step S1 by adopting a vacuum hot-pressing backflow process, so as to form the cover plate with the preset gold-tin welding ring. According to the invention, the assembly process of the cover plate and the gold-tin soldering ring can be simplified, and solder overflow and cover climbing during packaging of the cover plate and the substrate are inhibited.

The invention discloses a tin soldering device for integrated circuit board production, and relates to the technical field of welding equipment.The tin soldering device comprises a base, a supporting frame is arranged at the upper end of the base, a movable seat is arranged in the supporting frame, a mounting frame is arranged at the bottom end of the movable seat, a welding head is arranged in the mounting frame, a feeding pipe is arranged in the mounting frame, and a conical cavity is formed in the feeding pipe; according to the device, scaling powder can be uniformly smeared on the outer wall of the tin bar through the auxiliary mechanism, the tin bar is conveyed through the conveying mechanism while uniform smearing is achieved, meanwhile, the phenomenon that impurities are attached to the surface of a tin wire can be reduced through the sweeping mechanism, and therefore the welding quality of the tin wire is improved. According to the device, the tin bars are conveyed, smeared and cleaned through the linkage mechanism, the welding quality is further improved, the extra power requirement is reduced, and the cost and complexity of equipment are reduced.

The invention discloses electronic detonator spot welding defect detection equipment which comprises a bottom bearing plate, a telescopic fixing structure is arranged at the upper end of the bottom bearing plate, a circulating feeding structure is arranged in the telescopic fixing structure, and a testing structure is arranged at the upper end of the telescopic fixing structure. The telescopic fixing structure comprises side supporting plates symmetrically and fixedly arranged on the top face of the bottom bearing plate. According to the electronic detonator spot welding defect detection equipment provided by the invention, the telescopic fixing structure is arranged, and two groups of transverse electric push rods which are symmetrically arranged drive clamping plates at the upper ends to get close to each other, so that electronic detonator control plates with different sizes on the surface of the top plate can be fixed; and meanwhile, a longitudinal electric push rod is matched to drive a test meter and a test needle head on the top to descend to be in contact with a welding spot on the surface of the control panel, so that whether the welding spot has pseudo soldering or not can be detected, compared with an existing detection device, the detection efficiency of the control panel can be effectively improved, and meanwhile higher adaptability is achieved for control panels of different sizes.

The invention relates to the technical field of batteries, and discloses a busbar and a battery pack. The busbar is of a double-layer plate-shaped structure and comprises a first busbar plate and a second busbar plate, and the thickness of the first busbar plate is smaller than that of the second busbar plate. The first bus board is provided with two pole positioning holes; the second bus board is provided with two pole welding holes, and the size of the pole welding holes is larger than that of the pole positioning holes; the two pole positioning holes are correspondingly formed in the two pole welding holes respectively; the first confluence plate and the second confluence plate are connected at intervals, and a heat dissipation gap is formed between the plate surfaces of the first confluence plate and the second confluence plate. According to the busbar provided by the invention, the double-layer plate-shaped structure is adopted, so that the welding problem of pseudo soldering or hole explosion can be avoided; the over-current sectional area of the busbar can be multiplied, and the temperature rise is small when a large current passes through the busbar; extra heat is prevented from being transferred into the battery cell to influence the cycle life of the battery cell, and the design requirement of a fast charging system of more than 3C is met.

The utility model discloses an automatic tin soldering machine for a relay, which comprises a rack, and the rack is provided with a feeding mechanism, a tin soldering mechanism, a tin soldering mechanism, a tin soldering mechanism, a tin soldering mechanism and a tin soldering mechanism, the liquid pumping mechanism comprises a supply container and a peristaltic pump, the supply container is used for containing scaling powder, and the peristaltic pump is connected with the supply container to pump the scaling powder into the supply container; the tin furnace mechanism comprises a tin cup and a tin bath, the tin cup is located in the tin bath and connected with a first lifting air cylinder, and a liquid level detection probe is arranged above the tin bath; the washing mechanism comprises a cleaning water tank; the cooling and blow-drying device comprises an air knife which is connected with an air blower; the transfer mechanical arm comprises a portal frame, the portal frame is located above the machine frame, a three-axis moving module and a clamping jaw are arranged on the portal frame, the clamping jaw is installed on the three-axis moving module, and automatic high-precision soldering tin feeding can be achieved.

The utility model discloses assembling, welding and detecting integrated equipment for an automobile tail lamp. Comprising a control cabinet, a station rotating disc, a tool station, a tin soldering welding machine, a welding head, a lamp shell mirror installing mechanism, a pneumatic clamp, a first air cylinder, a second air cylinder, a first guide rail, a first sliding base, a lamp shell lampshade installing mechanism, a support, a pneumatic suction cup, a third air cylinder, a linear motor, an ultrasonic welding machine, a lightening optometry mechanism, a camera, an air tightness detector, a fourth air cylinder, an L-shaped frame, a marking mechanism and a two-dimensional code marking device. The device comprises a cylinder 5, a screw elevator, a blanking mechanism, a conveyor, a rack and a display. The automobile tail lamp assembling, welding and detecting device is reasonable in design, assembling, welding and detecting of an automobile tail lamp can be efficiently and orderly completed conveniently by arranging a traditional station into the integrated station where the lamp shell, the reflective mirror and the lampshade can be sequentially placed, the assembling, welding and detecting process is high in continuity, the time needed for completing one automobile tail lamp is short, and the finished product quality is high; the problem that a traditional automobile tail lamp assembly line is tedious and complex is solved.

The invention relates to the technical field of metal processing, and discloses a mute key processing method which comprises the following steps: S1, providing a plate; s2, the third side and the fourth side of the plate serve as a first machining area and a second machining area and are machined, so that a product rough blank is formed; s3, a main body part and a touch part are sequentially machined on the product rough blank, a groove is machined in the main body part, and a closing part is machined in the groove; and S4, blanking is conducted, and the mute key is obtained. When the magnet is mounted, the magnet penetrates into the groove from the first wall surface to be embedded into the main body part, the closing part is used for blocking the magnet and preventing the magnet from being separated from the groove in the width direction of the plate, and the closing part can also be used for containing soldering tin or glue. After the magnet is assembled and fixed, one side surface, facing the internal structure of the mobile phone, of the mute key is kept flat, so that the connection of the magnet is not affected by the sliding use of the mute key, and the service life of the mute key is prolonged by improving the stability of the connection of the magnet.

The invention discloses a secondary welding jig of a power module, and relates to the technical field of power module welding, the secondary welding jig of the power module comprises a bottom plate and a limiting assembly, positioning tools are symmetrically arranged at the top of the bottom plate, welding piece positioning pieces are arranged in the positioning tools, and fixing assemblies are connected to the four ends of the top of the bottom plate; the outer side of the lower portion of the fixing assembly is sleeved with a first contact pin positioning plate, the outer side of the upper portion of the fixing assembly is sleeved with a second contact pin positioning plate, and through holes are formed in the first contact pin positioning plate and the second contact pin positioning plate. According to the invention, the positioning tool cooperates with the soldering lug positioning sheet and the pin positioning plate to realize accurate alignment of the substrate, the DBC and the Pin, meanwhile, the rapid connection structure between the limiting assembly and the second pin positioning plate improves the efficiency of transplanting the Pin, and then one-time molding welding is carried out through the sintering furnace, so that the production steps and manual intervention are significantly reduced, the power module assembling efficiency is improved, and the production cost is reduced. And meanwhile, the process complexity and the manufacturing cost are reduced.

The utility model discloses an efficient heat dissipation device convenient to assemble and electronic equipment. The heat dissipation device comprises an upper cover plate, a bottom cavity, a heat dissipation A single sheet and a heat dissipation B single sheet. The upper cover plate is covered with a first solder layer and is provided with a mounting through groove; a second solder layer covers the overlapped side surface of the heat dissipation single sheet A and / or the heat dissipation single sheet B, and the heat dissipation single sheet A and the heat dissipation single sheet B extend downwards at the end part of the corresponding flow channel wall surface to form a connecting part; the radiating A single sheet is provided with a folding sheet which is bent and extends towards the radiating B single sheet; the heat dissipation single pieces A and the heat dissipation single pieces B are inserted into the mounting through grooves in a mutually stacked mode at the top of the upper cover plate, the connecting parts are stacked to define a flow channel connector part, the folding pieces stretch out of the sides, away from the heat dissipation single pieces A, of the heat dissipation single pieces B, the stretching-out ends of the folding pieces make contact with the adjacent heat dissipation single pieces A for positioning, and the bottom cavity is assembled at the bottom of the upper cover plate in a stacked mode. Forming an assembled semi-finished product; and assembling a semi-finished product and performing one-time vacuum welding fixation. In this way, assembling is convenient and fast, and stability is ideal.

A temperature and pressure sensor comprises a shell, and a plug assembly is arranged on the upper portion of the shell. A circuit board, a ceramic capacitor, a resistor support and a thermistor are sequentially arranged in the shell from top to bottom, a plurality of contact pins are installed in the plug assembly, the lower ends of the contact pins are connected with the circuit board through tin soldering, and the circuit board is connected with the ceramic capacitor through tin soldering; the thermistor and the resistor support are connected in a resistance welding mode. The upper end of the resistor support is electrically connected with the ceramic capacitor. Wherein the temperature function and the pressure function are integrated, two electrodes are arranged at the bottom of the ceramic capacitor and elastically connected with contacts of the resistor support to form electrical contact, two pins are additionally designed on the front face of the ceramic, and the pins are communicated with the two electrodes at the bottom of the ceramic respectively, so that the function of leading out temperature and resistance signals is achieved.

The utility model provides a charge coupled device (CCD) tin wire soldering machine, which relates to the technical field of tin wire soldering machines and comprises a machine body, and a support base is fixedly mounted at the bottom end of the machine body. By arranging the machine body, the supporting base, the working platform, the drawer, the lamplight plate, the illuminating lamp, the camera, the lead screw module, the base plate, the Y-direction movement shaft, the Z-direction lead screw, the Z-direction servo motor, the upper silver guide rail and the like, when the equipment is used, manual labor can be effectively solved, manual operation and certain technical errors are reduced, and the production efficiency is improved. And meanwhile, by arranging the fixing plate, the front arm and other structures, any position needing to be welded can be adjusted, and automation and intellectualization are achieved in the welding process. And meanwhile, the welding has the functions of flexible and diversified tin soldering modes, spot welding, drag welding and the like so as to adapt to various high, medium and low-difficulty tin soldering operations, so that the welding quality is improved.

The invention relates to the field of coil welding, in particular to welding equipment for inductance coil machining, which comprises a welding table, a fixed seat, a lifting assembly and the like, a fixing base is slidably connected to the welding table. A first placing block for placing a coil is arranged on the fixed seat; a limiting block is arranged on the first placing block; a second placing block for placing a capacitor is arranged on the fixed seat; a lifting assembly is installed on the welding table, and the fixing base is connected with the lifting assembly. According to the invention, a copper wire of a coil is extruded through the roller, so that the copper wire in an irregular twisted form is converted into a straight state to be lapped on the upper plane of the fixed seat, and the copper wire is ensured to be in more sufficient and uniform contact with a capacitor pin, so that a firmer and more reliable welding spot is formed, the risks of insufficient welding and falling are reduced, and the production efficiency is improved. And the copper wire is limited and fixed through the limiting groove, the copper wire is shaped, so that the copper wire is kept in a straight state, the copper wire is prevented from rebounding and gradually recovering the shape, and the subsequent welding effect is improved.