527 results about "Wave soldering" patented technology

A self-correcting wave soldering machine for soldering a RGB in an SMT manufacturing system. The wave soldering machine includes at least one thermal infrared camera that generates thermal images of the RGB so as to provide thermal imaging processing to monitor, characterize and predict processing temperatures. The wave soldering machine generates a heat map using the thermal images and compares the heat map to a thermal gradient to provide real time profiling by digitally connecting it to heating and other mechanically controlled systems, such as flux dispensing, conveyor speed and parallelism of the wave soldering machine.

The invention relates to the technical field of automatic assembly, and discloses automatic circuit board welding equipment which comprises a welding mechanism, a clamping mechanism and a driving mechanism, the welding mechanism is provided with a wave soldering station, and the wave soldering station is used for conducting wave soldering on a passing circuit board; the driving mechanism comprises a driving belt, a guide rail, a driving part and a fixing frame, at least part of the fixing frame is located above the wave soldering station, the driving belt is arranged on the outer surface of the fixing frame in a sleeving mode, and the driving part is arranged on the guide rail. According to the automatic welding equipment for the circuit board, the driving belt and the guide rail are adopted for cooperative transmission, the guide rail and the driving belt are rigidly connected through the fixing frame, and a closed conveying groove is formed; the inner surface part of the guide rail and the outer surface of the driving belt form a guide space for the clamping mechanism to move along with the driving belt inside, and meanwhile rigid support is formed by means of the guide rail.

The utility model discloses a circuit board wave soldering device, belongs to the technical field of circuit board production, and solves the problem that a filter screen is inconvenient to clean in the prior art. The crest welder comprises a crest welder body, a guide pipe, an air extractor, a filter screen, a driving device, a brush and a dust collector. And the air extractor can extract waste gas generated in the wave soldering process, so that the waste gas is gathered in the guide pipe, and further purification of the waste gas is facilitated. The filter screen can filter solid impurities in waste gas, and the solid impurities are prevented from entering the air exhauster through the inside of the guide pipe to cause air exhauster faults. The driving device can drive the filter screen to move in the direction perpendicular to the axis of the guide pipe so that the filter screen can be far away from the guide pipe, the brush can brush away solid impurities on the surface of the filter screen in the horizontal moving process of the filter screen, the dust collector can suck away the solid impurities brushed away by the brush in time, and convenience and rapidness are achieved.

The invention discloses wave-soldering equipment based on visual inspection, and relates to the technical field of wave-soldering equipment, the wave-soldering equipment comprises a case, a clamping unit, a spraying unit, a preheating unit, a welding unit and an adjusting unit, the case is used for installing and fixing the clamping unit, the spraying unit, the preheating unit, the welding unit and the adjusting unit, the clamping unit is used for clamping a PCB, and the adjusting unit is used for adjusting the spraying unit. The spraying unit is used for coating soldering flux, the preheating unit is used for evaporating moisture in the soldering flux, the welding unit is used for welding pins of the PCB, the adjusting unit is used for adjusting wave crests, the PCB is clamped through the clamping unit in the transportation process of the PCB, and after the soldering flux is sprayed to the PCB through the spraying unit, the PCB is conveyed to the welding unit through the adjusting unit. The preheating unit evaporates moisture in the soldering flux, the PCB is welded through the welding unit, and the wave crest height is adjusted through the adjusting unit during welding, so that the welding quality is improved.

The utility model discloses a wave soldering device, which relates to the technical field of soldering equipment and comprises a transport device, the transport device comprises a conveyor belt, an element positioner and a motor, the motor is mounted on the left end face of the transport device, the conveyor belt is mounted on the inner side of the transport device, and the element positioner is mounted on the conveyor belt. A plurality of element positioners are mounted on the inner wall of the transportation device; according to the soldering flux spraying device, the laser sensor is arranged, the air pump is started, soldering flux is sprayed out through the nozzle, the soldering flux is sprayed to a part needing to be welded, the laser sensor can accurately identify the part needing to be sprayed with the soldering flux, identification is effective, production efficiency can be improved, the fan can be installed through the installation plate, and the production efficiency is improved. The fan is started to drive airflow to move, firstly, the air is filtered through the activated carbon filter screen, then the air is heated through the heating wire, and finally the air is brought to the circuit board to preheat and dry a part to be soldered, so that the processing quality of the device is improved.

A wave soldering machine is configured to perform a wave soldering operation on a printed circuit board. The wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave. The wave soldering nozzle assembly is configured to control a width of the solder wave through the solder distribution baffle to produce a maximum width solder wave and a minimum width solder wave.

The utility model discloses a self-adaptive anti-floating high wave-soldering plug-in jig, which belongs to the technical field of wave-soldering plug-in jigs and comprises a jig bottom plate, mounting holes are formed in four corners of the jig bottom plate, bolts are arranged in the mounting holes in a penetrating manner, a two-way lead screw is rotatably mounted in the jig bottom plate, and the two-way lead screw is connected with the two-way lead screw. One end of the bidirectional lead screw extends out of the jig bottom plate and is fixedly provided with a knob; the position of an adjusting outer sleeve can be adjusted through sliding of a trapezoidal sliding block, the front-back position of a rubber pressing disc is adjusted, an adjusting inner plate can slide relative to the adjusting outer sleeve to adjust the position, the left-right position of the rubber pressing disc is adjusted, and multiple parts are pressed at the same time in cooperation with the elasticity of a third spring and the rubber pressing disc. And in addition, due to the arrangement of a third spring, the pressing height can be automatically adjusted according to different heights of the parts, it can be ensured that each part is pressed, poor floating height caused by floating of the parts is effectively prevented, and the production yield of products can be increased.

The invention discloses an emergency lamp circuit board automatic welding device and technology, and belongs to the technical field of emergency lamp circuit board machining. The emergency lamp circuit board automatic welding device comprises a wave-soldering pool, a welding lifting moving mechanism, a welding circuit board fixing mechanism, an electrical component fixing mechanism and a welding pin cutting mechanism; the welding lifting moving mechanism is located above the wave-soldering pool and can drive a circuit board to horizontally move along the wave-soldering pool, and the welding circuit board fixing mechanism is arranged at the lifting end of the welding lifting moving mechanism. The electric appliance element fixing mechanism is also located at the lifting end of the welding lifting moving mechanism, the electric appliance element fixing mechanism is located above the welding circuit board fixing mechanism, and the welding pin cutting mechanism is located beside the wave-soldering pool. According to the invention, automatic welding operation of the emergency lamp circuit board can be realized.

The invention relates to the technical field of continuous wave soldering, in particular to selective continuous wave soldering equipment based on electronic components, which comprises a base, a conveying unit, a soldering unit, a guide component and an auxiliary component. According to the welding device, firstly, the upper die base and the lower die base are closed and locked, a welding area is accurately opposite to the nozzle by means of the guide assembly, the welding quality and welding efficiency of follow-up welding are ensured, and batch rapid production is facilitated; the upper die base and the lower die base serve as first-stage covering protection, and the guide assembly limits the height of the nozzle; the tin solution is cooled before welding to form second-stage temperature protection, then third-stage protection is formed by means of nitrogen filling in in the welding process, fourth-stage protection is formed through preheating and cooling protection in the auxiliary assembly, in conclusion, through the four-stage temperature protection, the problem that components are damaged due to high temperature is solved, and the welding quality is improved.

The utility model discloses a wave-soldering jig for an anti-collision piece, which relates to the technical field of wave-soldering jigs and comprises a synthetic stone bottom plate, an anti-collision mechanism for preventing collision of a printed circuit board (PCB) is arranged at the bottom of the synthetic stone bottom plate, and a fixing mechanism for fixing the PCB is arranged on the periphery of the top of the synthetic stone bottom plate. And a plurality of groups of dismounting mechanisms for enabling the pressing piece to be detachable are arranged in the cover plate. According to the utility model, through the anti-collision mechanism, when the device is collided, the damping spring can play a role in damping, so that the collision force is reduced, the device is more anti-collision, and the effect that the fixed PCB is not easy to damage is achieved; according to the PCB component fixing device, the pressing piece is detached from the threaded rod, the threaded rod is taken down from the cover plate, then the pressing piece and the threaded rod which influence fixation of the PCB component are detached, and the effect of fixing the PCB components with different sizes and heights can be achieved.

The invention relates to the field of wave soldering, in particular to a PCB welding quality detection method and time control method based on infrared imaging, and the method comprises the steps: obtaining an infrared image of a non-welding surface of a PCB; processing and analyzing the infrared image to obtain a PCB non-welding surface space temperature distribution signal and a pin edge gray scale gradient function; a feedback signal is generated according to the temperature signal of the non-welding surface of the PCB and transmitted to the central controller to adjust the transmission speed of the transmission guide rail driven by the motor to transmit the PCB; and identifying a potential defect area existing in the PCB pin welding spot according to the pin edge gray scale gradient function. According to the method, control over the tin immersion time of wave soldering and defect identification are both considered, and the soldering quality of PCB wave soldering is improved.

A wave soldering machine is configured to perform a wave soldering operation on a printed circuit board. The wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave. The wave soldering nozzle assembly is configured to control a width of the solder wave through the solder distribution baffle to produce a maximum width solder wave and a minimum width solder wave.

The utility model discloses an automatic cleaning device for a selective wave soldering nozzle. The automatic cleaning device comprises a shell assembly, a power transmission assembly, a rotating assembly and a cleaning assembly. An accommodating space is formed in the shell assembly; the power transmission assembly is arranged in the shell and comprises a power source and a transmission structure in transmission connection with the power source. The rotating assembly is connected with the power transmission assembly; the cleaning assembly comprises a high-temperature-resistant cleaning ball, a cleaning ball box, a heat insulation disc, a ball box base and a ball box cover, the ball box base is connected with the rotating assembly and can be driven by the rotating assembly to rotate, an open mounting space is formed in the cleaning ball box, and the high-temperature-resistant cleaning ball is arranged in the mounting space. The selective wave soldering machine has the advantages that residues on the nozzle are automatically cleaned through the automatic cleaning device, shutdown and manual operation are not needed, the use efficiency of the selective wave soldering machine is improved, cleanliness of the nozzle is guaranteed, and the welding quality is improved.

A wave soldering machine is configured to perform a wave soldering operation on a printed circuit board. The wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave. The wave soldering nozzle assembly is configured to control a width of the solder wave through the solder distribution baffle to produce a maximum width solder wave and a minimum width solder wave.

The utility model relates to the technical field of welding jigs, and discloses a wave-soldering jig which comprises a jig body, the upper surface of the jig body is rotationally connected with two swing plates, the other ends of the two swing plates are fixedly connected with a heat dissipation plate, clamping grooves are formed between the two swing plates, a clamping column is clamped between the two clamping grooves, and the clamping column is fixedly connected with the heat dissipation plate. Two sliding grooves are formed in the inner bottom wall of the jig body. According to the wave-soldering jig, the welding effect of equipment can be improved through the cooperation of the installation tin dragging pins and external flux paste, the tin connection phenomenon is avoided, the one-time qualification rate is improved, the circuit board body can be conveniently disassembled through the cooperation of the installation supporting plate and the spring, the circuit board can be actively popped out after welding of the circuit board is completed, and the welding efficiency is improved. And through cooperation of the swing plate and the heat dissipation plate, the heat dissipation plate can make close contact with the circuit board, meanwhile, heat dissipation can be conducted on the circuit board body, and deformation of the circuit board due to high temperature is avoided.

A wave soldering machine is configured to perform a wave soldering operation on a printed circuit board. The wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave. The wave soldering nozzle assembly is configured to control a width of the solder wave through the solder distribution baffle to produce a maximum width solder wave and a minimum width solder wave.

The invention discloses an automatic PCB welding device, and relates to the technical field of PCB welding, the automatic PCB welding device comprises a welding table, and further comprises a transmission unit arranged on one side of the welding table; the discharging unit is arranged on the other side of the welding table; the conveying unit comprises a feeding table, a welding table, a conveying unit, a conveying unit and a control unit, and the feeding table is arranged on one side of the welding table; the two groups of feeding conveying belts are symmetrically arranged on the feeding table, and placing plates are uniformly arranged on the feeding conveying belts; the multiple placing assemblies are arranged between the two sets of feeding conveying belts and clamped on the placing plates, through the conveying units and the discharging units, line production of PCBs in the welding process can be achieved, so that the working efficiency is improved, in addition, through arrangement of the placing assemblies, PCBs of different sizes and models can be fixed, and the welding quality of the PCBs is improved. And meanwhile, the PCB can be stably fixed in the wave soldering process, so that missing soldering and continuous tin soldering caused by deviation of the PCB in the soldering process are reduced.

The invention relates to the technical field of wave soldering, and discloses a wave soldering wave crest height correction method which comprises the following steps: S1, simulation model establishment: determining preset welding process parameters; s2, preparation before correction is conducted, wherein fault-free operation and normal wave-soldering operation of welding equipment are guaranteed; s3, wave soldering debugging: determining the depth of the PCB simulation board immersed in the soldering flux wave crest; s4, wave-soldering test welding: correcting the height of the wave crest of the welding flux; s5, formal wave-soldering: correcting the wave crest of the soldering flux; and S6, welding quality monitoring and evaluation. The method comprises the following steps: determining preset welding process parameters; determining the depth of the soldering flux wave crest immersed in the PCB analog board; the preheating temperature is continuously adjusted for adjustment, so that the height of the wave crest of the correction solder is corrected; the height, the width and the outline shape of the soldering flux wave crest are monitored in real time, and the soldering flux wave crest is corrected in real time; the wave-soldering quality can be greatly improved, and the reliable and stable soldering quality is ensured.

A variety of footed and leadless semiconductor packages, with either exposed or isolated die pads, are described. Some of the packages have leads with highly coplanar feet that protrude from a plastic body, facilitating mounting the packages on printed circuit boards using wave-soldering techniques.

A wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave, a throttle gate coupled to the flow duct and configured to move from an open position to enable complete flow of solder through the solder distribution baffle and a closed position to inhibit a portion of flow of solder through the solder distribution baffle, and an exit wing coupled to the flow duct and configured to move from a lowered position to enable increased solder flow and a raised position to decrease solder flow. A controller is configured to control the movement of the throttle gate and the exit wing to control the flow of solder.

The invention discloses a wave crest detection device and method for wave crest welding equipment. The wave crest welding equipment comprises a nozzle used for spraying solder waves with wave crests; the wave crest detection device comprises a data processing and control part, and a window photoelectric emission part and a window photoelectric receiving part which are erected on the wave-soldering equipment; the window photoelectric emission part and the window photoelectric receiving part are erected on the first side and the third side of the nozzle respectively; the data processing and control unit comprises an emission control assembly used for controlling the window photoelectric emission part to emit parallel incident light in an array form towards the solder wave direction, and a receiving control assembly used for controlling the window photoelectric receiving part to receive a detection light signal. And the data processing component is used for calculating, analyzing and acquiring wave crest data of the solder wave based on the detection optical signal.

The utility model provides a wave soldering jig capable of being used for various magnetic cores with different heights, which comprises a magnetic core jig plate, a plurality of magnetic core products are arranged on the magnetic core jig plate, a plurality of magnetic core pressing plates are used for positioning and pressing the magnetic core products on the magnetic core jig plate through spring positioning pins, and the magnetic core products are arranged on the magnetic core jig plate. Each magnetic core pressing plate is fixedly provided with two balancing weights in a mirror symmetry mode, and each magnetic core pressing plate is provided with four positioning columns which are inserted into positioning holes formed in the magnetic core jig plate in a penetrating mode. According to the utility model, rapid and accurate positioning and stable fixation of the magnetic core are realized. The device is simple in structure and convenient to manufacture, install and operate, and the labor intensity of workers is remarkably reduced. The synergistic effect of the spring positioning pin and the positioning column ensures that the magnetic core does not displace in wave soldering, and the soldering quality and the product reliability are improved. The design of the spring positioning pin endows the magnetic core with buffering and self-adaptive capabilities, and the balancing weight enhances the stability and adapts to various magnetic core products.

The utility model discloses a wave crest soldering jig for patch of circuit board, comprising a carrier plate, a longitudinal slide rail being fixed on one side above the carrier plate, a slider being installed inside the longitudinal slide rail, a first connecting piece being fixed on the top of the slider, a first fastening bolt passing through the top of the first connecting piece, a first rack being fixed on one side of the first connecting piece, a fixing hole being opened on the upper surface of the first rack; the wave crest soldering jig for patch of circuit board, through the coordinated use of the longitudinal slide rail, the slider, the first fastening bolt, the first rack rod, the transverse slide rail, the movable block, the second fastening bolt and the second rack rod, when it is necessary to clamp circuit boards of different sizes, the longitudinal slide rail is adjusted to slide longitudinally, and when it is adjusted to a position suitable for clamping the circuit board, the first fastening bolt is tightened to fix the first rack rod, and similarly the position of the second rack rod can be adjusted, thereby meeting the clamping work of circuit boards of different sizes.

The application relates to a device suitable for small printed board production and processing, which comprises a clamp plate, components and devices to be welded on the printed board, a plurality of printed boards spliced into one and arranged in a matrix along a first direction and a second direction; the clamp plate clamps the side edges of all the printed boards extending along the first direction; the clamp plate is provided with component and device positioning holes, the components and devices to be welded pass through the component and device positioning holes and the printed board, and the components and devices to be welded face the same direction; the clamp plate and the printed boards clamped by the clamp plate are put into a wave soldering furnace for component and device welding. Compared with the prior art, the device has the advantages that the printed boards after splicing are clamped by the clamp plate, the components and devices to be welded on the printed boards are fixed through the component and device positioning holes on the clamp plate, especially the components and devices with requirements on the welding direction, the component and device positioning holes can fix the installation direction of the components and devices, the direction is consistent after wave soldering, a plurality of printed boards can be welded at one time, and the production efficiency is improved.

The invention relates to the technical field of circuit board welding equipment, and discloses a PCB welding device which comprises a conveying mechanism, a wave soldering mechanism and a fixing mechanism, the conveying mechanism comprises a conveying assembly and a bearing part, and the fixing mechanism comprises a pin fixing assembly and a board fixing assembly; the plate fixing assembly comprises a downward pressing piece and a downward pressing driving piece, the downward pressing piece is arranged on the bearing piece in an up-down moving mode, and the downward pressing driving piece can drive the downward pressing piece to move downwards; the pin fixing assembly comprises an extrusion air bag, the extrusion air bag is arranged above the wave-soldering mechanism, when the PCB is conveyed to the position above the wave-soldering mechanism, the extrusion air bag is located above the PCB, and the extrusion air bag can downwards extrude components inserted in the PCB. When the welding device for the PCB is used, components and the PCB are fixed through the pin fixing assembly and the board fixing assembly, the pins and the PCB can be prevented from moving when being impacted upwards by the wave crest of welding fluid, and poor welding is prevented.

The utility model relates to the technical field of welding equipment, and provides an anti-oxidation structure and a wave soldering device. The anti-oxidation structure is suitable for being installed on the wave soldering device and comprises an anti-oxidation cover and a fixing piece, the fixing piece is detachably connected with the anti-oxidation cover, and an anti-oxidation cavity is formed in the anti-oxidation cover so that a transmission assembly of the wave soldering device can be located in the anti-oxidation cavity. According to the anti-oxidation structure and the wave soldering device provided by the utility model, the anti-oxidation cover and the fixing piece are detachably connected, so that after tin slag is generated in the anti-oxidation cover, the anti-oxidation cover and the fixing piece which are connected with each other can be detached, and the interior of the anti-oxidation cover can be conveniently cleaned.

The invention discloses an oxidation improvement method for an FPC bonding pad with an electronic connector. The oxidation improvement method comprises the steps that S1, an SMT bonding pad heat insulation jig is prepared; s2, the SMT bonding pad heat insulation jig is installed on an SMT carrier plate provided with an FPC; s3, high-temperature procedures of SMT reflow soldering, FR4 / PI press fit and FR4 press fit baking are executed; s4, the SMT bonding pad heat insulation jig is removed; and S5, carrying out a wave soldering process. Before the FPC is subjected to the high-temperature working procedure, the SMT bonding pad heat insulation jig is installed at the bonding pad position of the FPC connector, and the oxidation risk of the FPC and the connector bonding pad in the high-temperature working procedure is remarkably reduced through the synergistic effect of multi-stage heat insulation and rapid positioning of the SMT bonding pad heat insulation jig. The problems that in the prior art, due to high-temperature oxidation of a bonding pad and manual wiping with an eraser, the labor cost is high, and chippings are left can be solved.

The invention provides an electrolytic capacitor, a circuit board, a remote controller, an air conditioning system and a circuit board preparation technology, the electrolytic capacitor is used for being installed on the circuit board, and the circuit board is provided with an installation groove; the electrolytic capacitor comprises an extension pin, and the extension pin is mounted in the mounting groove; wherein the electrolytic capacitor is used for being identified and sucked by the chip mounter and is inversely erected on the circuit board. The electrolytic capacitor is inversely erected on the circuit board through the extension pins, the body height of the electrolytic capacitor on the front face of the circuit board is reduced, the electrolytic capacitor can be suitable for more application scenes, and the electrolytic capacitor can be identified and sucked by a chip mounter and is erected on the circuit board in a chip mounting mode, so that the chip mounting efficiency is improved. Compared with the prior art, full automation and manufacturability are improved, labor and maintenance cost is reduced, wave soldering procedures caused by plug-in electrolytic capacitors are reduced, resources can be saved, preparation procedures and process complexity are reduced, quality problems caused by welding are avoided, and the quality of the circuit board is improved.

The utility model discloses a wave soldering furnace jig for fixing a circuit board, which comprises a bottom plate, at least one mounting groove for mounting the circuit board is arranged on the bottom plate, and element pin via holes are arranged at the bottom of the mounting groove; the mounting groove is formed in the bottom plate, the at least two first fixing assemblies are arranged on the peripheral area of the mounting groove, one end of each first fixing assembly is rotationally connected with the bottom plate, and the other end of each first fixing assembly is used for abutting against a circuit board mounted in the mounting groove when the circuit board is mounted in the mounting groove of the bottom plate. According to the technical scheme, the circuit board is limited in the horizontal direction and the vertical direction through the mounting groove and the first fixing assembly, welding flux can only pass through the element pin via holes in wave soldering, the surface-mounted component cannot be pulled, and the surface-mounted component is prevented from falling off in the wave soldering process.

The utility model relates to the field of circuit board welding production, and discloses a wave crest jig which comprises a carrier plate, a pressing plate and a leveling piece, and the carrier plate is provided with a containing groove used for containing and positioning a circuit board; the pressing plate is detachably connected with the carrier plate and is provided with an elastic abutting assembly, and the elastic abutting assembly is used for being pressed on an electronic component of the circuit board; and the flattening piece is connected with the carrier plate and / or the pressing plate and comprises a flattening surface, the flattening surface is positioned between the pressing plate and the groove bottom of the accommodating groove, and the flattening piece is used for limiting the substrate of the circuit board between the flattening surface and the groove bottom surface of the accommodating groove in the thickness direction. The wave crest jig provided by the utility model can solve the problem of how to improve the smoothness of the circuit board in the wave crest welding process.