Connector welding auxiliary equipment

Abstract

The invention relates to the technical field of welding equipment, and discloses connector welding auxiliary equipment which comprises an auxiliary part, the auxiliary part is located below a welding part, the auxiliary part comprises an upper positioning box and a lower positioning piece which are arranged up and down, and the side edge of the upper positioning box and the side edge of the lower positioning piece are connected through a hinge. A limiting strip for limiting a wire is arranged on the side edge of the lower positioning piece, a first laser groove facilitating laser welding is formed in the middle of the upper end of the upper positioning box, and push plates are symmetrically arranged on the side, close to the lower positioning piece, of the upper positioning box; a second laser groove facilitating laser welding is formed in the middle of the lower end of the lower positioning piece. The linkage piece is arranged, the positioning plate is driven to synchronously contract and contract by rotating the rotary knob, the size of the positioning groove can be accurately adjusted according to the actual size of the connector, a rubber layer on the inner side of the positioning plate is preliminarily attached to the side face of the connector, and a gap is reduced to the maximum extent from the initial positioning stage; the design defect that the fixed size of a traditional clamping groove is larger than that of a workpiece is overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a connector welding auxiliary equipment. BACKGROUND

[0002] The development of connectors is constantly evolving towards high frequency, high speed, miniaturization, high density integration and intelligence. In the welding process, laser welding of connectors requires precise welding spots, small heat-affected zones, and can achieve non-destructive and reliable connection of small pitch pins, avoiding thermal damage to surrounding plastic parts to ensure excellent electrical contact performance and mechanical reliability. In the welding process, the precise positioning of the laser beam is achieved and guaranteed by the welding auxiliary equipment.

[0003] In the existing laser welding auxiliary positioning of connectors, the "slot embedding positioning" mode is generally used: after embedding the structure to be welded into the preset positioning slot to complete one side welding, the structure needs to be turned over for the other side welding. In order to facilitate the quick placement of the structure, the size of the positioning slot is usually slightly larger than the structure to be welded, forming an inevitable assembly gap. During the turning process, the change of inertial force and gravity direction will cause the structure to move within the gap range, and the residual thermal stress after welding may cause slight deformation of the structure, further increasing the risk of position deviation. This problem directly causes multiple consequences: the welding spot deviates from the preset position, which cannot meet the precise welding requirements of small pitch pins, and is prone to defects such as virtual welding and pin short circuit; the deviation causes the laser heat-affected zone to expand, which may damage the surrounding plastic parts and affect the overall performance of the connector; in batch production, the poor consistency of the deviation will significantly reduce the welding yield and increase the repair cost. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the present application provides a connector welding auxiliary equipment, which can effectively solve the problem of laser welding deviation, increased defects and reduced yield caused by the displacement of the slot positioning due to the assembly gap during turning in the prior art.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: The present application provides a connector welding auxiliary equipment, comprising: a welding part; an auxiliary part, the auxiliary part is located below the welding part, the auxiliary part comprises an upper positioning box and a lower positioning piece placed one above the other, the side edges of the upper positioning box and the lower positioning piece are connected by a hinge, the side edge of the lower positioning piece is provided with a limiting strip for limiting the wire, the upper end of the upper positioning box is provided with a laser slot one for facilitating laser welding, and the side of the upper positioning box close to the lower positioning piece is symmetrically provided with a push plate; The middle part of the lower end of the lower positioning piece is provided with a laser groove two facilitating laser welding, and the middle part of the lower positioning piece is provided with a cavity, the inner wall of the cavity is slidably connected with a positioning plate, and the upper end of the positioning plate is provided with a resisting rod abutting against the push plate; Among them, the side edge of the positioning plate is embedded in the symmetrical sliding groove opened in the side edge of the cavity, and the side edge of the positioning plate is fixedly connected with a sliding block, and one of the sliding blocks is movably connected with a linkage.

[0006] Further, the side of the sliding groove close to the positioning plate is provided with a slot at intervals, and the side of the sliding groove away from the positioning plate is provided with a sliding rod.

[0007] Further, the linkage comprises a knob arranged outside the limiting strip, the other end of the knob is fixedly connected with a linkage rod, the linkage rod is composed of a long rod and two screw rods, and the two screw rods are symmetrically arranged at the two ends of the long rod.

[0008] Further, the outer wall of the screw rod is threadedly connected with a positioning block, the other end of the positioning block is rotatably connected with a cross link, and the end of the cross link close to the sliding block is movably connected with a connecting block.

[0009] Further, the middle part of the other sliding block is provided with a circular groove, and the inner part of the circular groove is slidably connected with the sliding rod.

[0010] Further, the side edge of the positioning plate is provided with a limiting groove, the side edge of the limiting groove is slidably connected with a rubber layer, the side of the rubber layer close to the inner wall of the limiting groove is fixedly connected with an inclined wedge plate one, the upper end of the inclined wedge plate one is designed to be inclined, and the side edge of the inclined wedge plate one is connected with the inner wall of the limiting groove through an elastic expansion rod.

[0011] Further, the middle part of the top end of the limiting groove is provided with a clamping groove, the inner wall of the clamping groove is slidably connected with a resisting rod, the outer wall of the resisting rod is sleeved with a spring, the bottom end of the resisting rod is fixedly connected with an inclined wedge plate two, and the bottom end of the inclined wedge plate two abuts against the upper end of the inclined wedge plate one.

[0012] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects: The linkage is arranged, the positioning plate is driven to be synchronously zoomed by rotating the knob, the size of the positioning groove surrounded by the positioning plate can be accurately adjusted according to the actual size of the connector, the rubber layer on the inner side of the positioning plate is preliminarily abutted against the side surface of the connector, the gap is minimized from the initial positioning stage, and the design defect that the fixed size is larger than the workpiece in the traditional clamping groove is avoided.

[0013] This invention features a push plate. When the device is closed, the push plate presses down, driving the second wedge plate to work in conjunction with the first wedge plate. The rubber layer actively extends and tightly adheres to the connector surface, forming a "wrap-around" clamping effect that completely eliminates residual gaps. This active clamping method replaces the "passive fitting" of traditional slots, ensuring that the connector has no room to move within the positioning groove formed by the positioning pads. Even when subjected to inertial forces or gravity during flipping, it will not shift. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the auxiliary part structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the upper positioning block structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the lower positioning component structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the inner wall structure of the lower positioning component according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the linkage structure in an embodiment of the present invention. Figure 7 This is a schematic diagram of the split structure of the positioning plate connection in an embodiment of the present invention.

[0016] The labels in the diagram represent: 1. Welding section; 2. Auxiliary section; 21. Upper positioning box; 211. Laser groove one; 212. Push plate; 22. Lower positioning component; 221. Laser groove two; 222. Cavity; 223. Slide groove; 225. Positioning plate; 2251. Slider; 2252. Limiting groove; 2253. Rubber layer; 2254. Wedge plate one; 2255. Wedge plate two; 2256. Abutment rod; 226. Slide rod; 23. Limiting strip; 24. Linkage component; 241. Knob; 242. Positioning block; 243. Cross linkage; 244. Linkage rod; 245. Connecting block. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments. Example:

[0019] Please see Figures 1-7 This invention provides a technical solution for connector welding auxiliary equipment: refer to Figure 1 and Figure 2 The equipment comprises a welding section 1 and an auxiliary section 2. The auxiliary section 2 serves as the core execution unit for positioning and clamping. It employs an openable structure where an upper positioning box 21 and a lower positioning component 22 align vertically. These components are flexibly flipped and opened via side hinges, ensuring both the compactness of the overall structure and providing convenient operating space for connector placement, removal, and multi-sided welding. The mating surfaces of the upper positioning box 21 and the lower positioning component 22 are precision-machined to ensure a stable positioning cavity after closure, preventing positioning deviations caused by structural loosening during welding. This openable design breaks through the operational limitations of traditional fixed clamps, eliminating the need for complex disassembly steps when inserting and removing connectors, significantly improving operational convenience.

[0020] refer to Figure 4 and Figure 5 The cavity 222 in the middle of the lower positioning member 22 provides a spatial basis for the installation and movement of the positioning plate 225. The positioning plate 225 is embedded in the sliding groove 223 on the side of the cavity 222 by the slider 2251 on the side, achieving a stable sliding connection. The sliding rod 226, which is provided through the side of the sliding groove 223 away from the positioning plate 225, slides and engages with the circular groove in the middle of one of the sliders 2251 to form a two-way guide structure, ensuring the straightness and stability of the positioning plate 225 during movement.

[0021] refer to Figure 6 and Figure 7The linkage 24, as the core drive mechanism for the synchronous adjustment of the positioning plates 225, adopts a transmission link design of knob 241 – linkage rod 244 – positioning block 242 – cross link 243, which is compact and has high transmission efficiency. The linkage rod 244 innovatively adopts a combination structure of a long rod and symmetrical screws at both ends. When the knob 241 is rotated, the linkage rod 244 drives the screws at both ends to rotate synchronously. Since the screws and positioning blocks 242 are connected by threads, the rotational motion of the screws is converted into the linear motion of the positioning blocks 242. The positioning blocks 242 are movably connected to the connecting block 245 through the cross link 243, thereby pushing the slider 2251 to slide along the slide groove 223, ultimately realizing the synchronous expansion or contraction of multiple positioning plates 225. This linkage design ensures the consistency of movement of all positioning plates 225, can accurately adjust the overall size of the positioning groove formed by the positioning plates 225, adapts to rectangular connectors of different specifications, and avoids the positioning center offset problem caused by the adjustment of a single positioning plate 225.

[0022] refer to Figure 7 The limiting groove 2252 on the side of the positioning plate 225 integrates a rubber layer 2253, a first wedge plate 2254, a second wedge plate 2255, a stop rod 2256, an elastic telescopic rod, and a spring, forming an elastic adaptive clamping system. The rubber layer 2253 directly contacts the connector surface, and its softness prevents scratches or damage to the connector shell during clamping. The upper end of the first wedge plate 2254 is inclined and fits tightly with the bottom end of the second wedge plate 2255, forming a wedge-shaped transmission structure. The upper end of the stop rod 2256 corresponds to the push plate 212 of the upper positioning box 21, and the spring sleeved on the outer wall provides the restoring force for the stop rod 2256. The side of the first wedge plate 2254 is connected to the inner wall of the limiting groove 2252 through the elastic telescopic rod to ensure the reset function after clamping.

[0023] When the device closes, the push plate 212 of the upper positioning box 21 presses down with the box body, contacts the upper end of the abutment rod 2256 and applies downward pressure, pushing the abutment rod 2256 to slide downward along the slot. Simultaneously, the second inclined wedge plate 2255 at the bottom end of the abutment rod 2256 moves downward, using its inclined contact surface with the first inclined wedge plate 2254 to convert the vertical pressure into a lateral thrust, driving the first inclined wedge plate 2254 to move outward along the inner wall of the limiting groove 2252, thereby pushing the rubber layer 2253 to tightly adhere to the connector surface, achieving elastic clamping. This structure links the device closing action with the clamping action, requiring no additional power source; adaptive clamping can be completed through mechanical transmission. This simplifies the operation process and automatically adjusts the clamping force according to the actual size of the connector, ensuring clamping stability while avoiding connector deformation caused by over-clamping.

[0024] refer to Figure 2 and Figure 3The laser groove 211 at the upper middle of the upper positioning box 21 corresponds to the laser groove 221 at the lower middle of the lower positioning component 22, forming a through welding channel. This ensures that the laser beam can accurately reach the welding area. The channel size has been optimized to avoid damage to the equipment body caused by the laser beam and to provide a channel for the exhaust of fumes during the welding process.

[0025] The limiting strip 23 on the side of the lower positioning component 22 adopts an arc-shaped fitting design, which can effectively limit the wire portion of the connector, preventing the wire from shifting due to external force pulling or its own weight during the welding process, thereby preventing interference between the wire and the welding area and ensuring the smooth progress of the welding process. At the same time, the limiting strip 23 also provides a mounting carrier for the knob 241 of the linkage component 24, so that the knob 241 is located on the outside of the equipment, making it convenient for the operator to adjust the positioning size at any time, thus optimizing the ease of operation.

[0026] The synchronous adjustable positioning mechanism, through the transmission action of the linkage 24, enables the synchronous scaling of multiple positioning plates 225, ensuring that the positioning center remains consistent and avoiding positioning deviations caused by individual adjustments of traditional clamps. The elastic adaptive clamping structure automatically eliminates positioning gaps after the equipment closes, achieving gapless positioning of the connector through the tight fit of the rubber layer 2253, fundamentally solving the problem of flipping and offset caused by gaps in traditional slots. The bidirectional guiding slide 223, in conjunction with the slide rod 226, ensures the straightness of the positioning plate 225 during movement, further improving positioning accuracy and fully meeting the precise positioning requirements of laser welding for fine-pitch pins.

[0027] The openable structure design makes opening and closing the equipment simple and quick, and the placement and removal of connectors requires no complicated steps, significantly reducing clamping time. The knob 241 design of the linkage 24 makes the positioning size adjustment intuitive and convenient. Operators can synchronously scale the positioning plate 225 by rotating the knob 241, and can complete the operation without professional technical training. The corresponding upper and lower laser grooves 211 and 221 allow the equipment to weld the upper and lower sides of the connector without disassembling or changing the fixture. With the hinge's flipping function, the positioning accuracy is maintained even after flipping, completely solving the cumbersome problem of changing fixtures for multi-sided welding in traditional fixtures.

[0028] The rubber layer 2253 on the inner side of the positioning plate 225 is made of a flexible and wear-resistant material. During clamping, it not only increases the friction with the connector and improves clamping stability, but also effectively avoids damage such as scratches and indentations on the connector surface caused by rigid contact. It is especially suitable for connectors with plastic shells or precision pins. The elastic design of the telescopic rod and spring enables the clamping force to be adaptively adjusted. It can automatically match the clamping force according to the material and structure of the connector, ensuring clamping reliability and preventing connector deformation or pin damage caused by over-clamping, thus ensuring the appearance and performance of the soldered product are intact.

[0029] The synchronous adjustable positioning mechanism covers a wide range of rectangular connectors, allowing the same device to adapt to connectors of different sizes and aspect ratios without replacing the positioning module, significantly reducing the R&D and manufacturing costs of dedicated fixtures. The modular design allows for individual disassembly and replacement of core components; for example, the rubber layer 2253 can be quickly replaced after wear, and the transmission components of the linkage 24 do not require complete equipment scrapping if they malfunction, lowering maintenance costs and reducing the barrier to entry for use. This makes it particularly suitable for small-batch, multi-variety production scenarios.

[0030] The core transmission components of the equipment, such as the linkage rod 244 and the cross linkage 243, are made of high-strength alloy material and undergo precision machining and heat treatment processes to ensure rigidity and wear resistance during transmission, resulting in a long service life. The hinge connection structure has undergone multiple opening and closing tests, demonstrating high connection strength and resistance to loosening, meeting the high-frequency operation requirements of mass production. The sliding fit between the positioning plate 225 and the slide groove 223 is lubricated, resulting in low movement resistance, smooth adjustment, and preventing jamming problems after long-term use, thus ensuring the continuous and stable operation of the production line.

[0031] During the equipment preparation stage, ensure that the welding part 1 and the auxiliary part 2 are firmly connected, and that the upper positioning box 21 and the lower positioning part 22 are flexibly connected by hinges without any jamming or loosening; check that there are no foreign objects blocking the laser slot 1 211 and the laser slot 2 221 to ensure that the laser beam channel is unobstructed; check that the installation position of the limit strip 23 is accurate and that there is no deformation or displacement.

[0032] Confirm that the sliding fit between the positioning plate 225 and the inner wall of the cavity 222 and the slide groove 223 is smooth, and that there is no jamming between the slider 2251 and the slide rod 226; check that the rubber layer 2253 is not damaged or detached, and that the elastic telescopic rod and spring are not deformed or ineffective; check that the knob 241 of the linkage 24 rotates flexibly, and that the linkage rod 244, the positioning block 242, and the cross linkage 243 are not rusted or broken.

[0033] Adjust the positioning plate 225 to the initial open state by rotating the knob 241, ensuring that the size of the positioning groove formed by the positioning plate 225 is slightly larger than the maximum size of the connector to be soldered, so that the connector can be placed in place; flip the upper positioning box 21 upward to open it, so that the auxiliary part 2 is in a fully open state, ready for the placement of the connector.

[0034] The wire portion of the connector to be welded is arranged along the limiting strip 23 on the side of the lower positioning member 22, so that the wire fits the arc-shaped surface of the limiting strip 23, to prevent the wire from getting tangled or protruding from the positioning area, and to ensure that the wire does not interfere with the welding process or affect the positioning accuracy.

[0035] Place the connector with the wires arranged smoothly into the positioning area enclosed by the positioning plate 225 of the lower positioning component 22. Adjust the placement of the connector vertically or horizontally according to the welding requirements, ensuring that the first side to be welded is facing upwards and that the welding area corresponds to the position of the laser groove 211 of the upper positioning box 21.

[0036] The knob 241 on the outside of the rotating limit bar 23 drives the screws at both ends to rotate synchronously via the linkage rod 244. The positioning block 242 moves linearly along the screw, which in turn pushes the cross link 243 to expand or contract. The cross link 243 drives the slider 2251 to slide along the slide groove 223 via the connecting block 245, causing multiple positioning plates 225 to contract synchronously towards the center until the rubber layer 2253 on the inner side of the positioning plate 225 initially adheres to the side of the connector, completing the pre-positioning. During the adjustment process, observe the posture of the connector to ensure there is no tilt or offset. If there is a deviation, the connector position can be slightly adjusted and the positioning plate 225 can be finely adjusted again.

[0037] Flip the upper positioning box 21 downwards to tightly align it with the lower positioning component 22. During the closing process, the push plate 212 at the bottom of the upper positioning box 21 gradually approaches the abutment rod 2256 at the upper end of the positioning plate 225 and applies downward pressure. Under the pressure, the abutment rod 2256 slides downwards along the slot, and the second wedge plate 2255 at its bottom moves downwards simultaneously. Through the inclined contact surface with the first wedge plate 2254, a lateral thrust is generated, pushing the first wedge plate 2254 to move outwards, thereby making the rubber layer 2253 tightly adhere to the connector surface, achieving the final elastic clamping. After clamping, confirm that the upper positioning box 21 and the lower positioning component 22 are tightly aligned without any loose gaps, and that the connector does not wobble or shift.

[0038] Based on the connector material, pin spacing, and welding requirements, adjust the laser output power, welding speed, spot size, and other parameters of the welding section 1 to ensure that the laser beam can accurately melt the welding area during the welding process, while controlling the range of the heat-affected zone.

[0039] If the equipment is equipped with the vision positioning system of the welding section 1, the welding area of ​​the connector is precisely positioned by the laser slot 211 to confirm that the focus of the laser beam is completely coincident with the welding point. If there is a deviation, it can be corrected by fine-tuning the position of the welding section 1 or the positioning accuracy of the auxiliary section 2.

[0040] The welding process is initiated, and the laser beam travels through laser slot 211 directly to the welding area of ​​the connector, completing the welding operation on the first side according to the preset welding path. During the welding process, the positioning structure of auxiliary part 2 continuously provides a stable clamping force to ensure that the connector will not shift its position due to vibration or thermal stress generated by laser welding; the welding fumes are discharged through the channel formed by laser slot 211 and laser slot 221 to prevent the accumulation of fumes from affecting the welding field of view or causing a decrease in the quality of the weld.

[0041] After the first side is welded, pause the welding process, keep the equipment closed, and observe the appearance of the weld point through the laser slot 211 to check for defects such as incomplete welding, missing welding, weld points that are too large or too small. If obvious defects are found, repair welding can be carried out in time.

[0042] After confirming that the first side of the weld is qualified, flip the upper positioning box 21 upwards to open the auxiliary part 2. Since the elastic clamping structure of the positioning plate 225 still maintains the positioning of the connector, the connector will not shift during the flipping of the upper positioning box 21. Flip the connector 180 degrees within the area enclosed by the positioning plate 225 so that the unwelded second side faces upwards. During the flipping process, the position of the connector can be slightly adjusted to ensure that the welding area of ​​the second side corresponds to the laser groove 211.

[0043] The upper positioning box 21 is flipped downwards again, and the push plate 212 presses down the abutment rod 2256 again. Through the cooperation of the second wedge plate 2255 and the first wedge plate 2254, the rubber layer 2253 is driven to clamp the connector again. Due to the adaptive characteristics of the elastic clamping structure, even if there is a slight change in the posture of the connector after flipping, the rubber layer 2253 can automatically conform to the connector surface, ensuring clamping stability and avoiding slight displacement that may occur during the flipping process.

[0044] Recalibrate the positioning accuracy of the laser beam and the second welding area, adjust the welding parameters if necessary, and start the welding program. The laser beam completes the welding operation on the second side through laser groove 211. If the welding of the second side needs to be performed from below, the auxiliary part 2 can be flipped over to allow the laser beam to weld through laser groove 221. The symmetrical design of the equipment ensures that both welding methods can achieve stable positioning results.

[0045] After the second side is welded, open the upper positioning box 21, take out the connector, and conduct a comprehensive inspection of the appearance of the solder joints, the welding strength, and the surface condition of the connector. After confirming that there are no welding defects and no surface damage, the entire welding process is completed.

[0046] Rotate knob 241 to open positioning plate 225 synchronously and return it to its initial state; clean welding residue in laser slot 1 211 and laser slot 2 221 to avoid affecting subsequent welding accuracy; tidy up the wires on limit strip 23 to ensure the equipment is clean.

[0047] Regularly check the wear of the rubber layer 2253, and replace it in time if the wear is severe; lubricate the transmission components of the slide groove 223, slide rod 226 and linkage 24 to ensure smooth movement; check the connection status and elasticity of components such as hinges, springs, and elastic telescopic rods, and repair or replace them in time if any problems are found to extend the service life of the equipment.

[0048] Traditional slot positioning methods, designed for easy connector insertion, use a positioning slot larger than the connector itself, inevitably resulting in assembly gaps. During the flipping process, the combined effects of inertia, gravity, and thermal stress cause connector misalignment. This device solves this problem at its root through a triple-design approach: First, the synchronous adjustable positioning mechanism eliminates the initial gap. By rotating the knob 241 to drive the positioning plate 225 to expand and contract synchronously, the size of the positioning groove formed by the positioning plate 225 can be precisely adjusted according to the actual size of the connector, so that the rubber layer 2253 on the inner side of the positioning plate 225 is initially attached to the side of the connector, minimizing the gap from the initial positioning stage and avoiding the design defect of traditional slots where the "fixed size is larger than the workpiece".

[0049] Second, the elastic adaptive clamping structure achieves gapless fixation. When the device closes, the push plate 212 presses down, driving the second wedge plate 2255 and the first wedge plate 2254 to move in tandem. The rubber layer 2253 actively extends and tightly adheres to the connector surface, forming a "wrap-around" clamping that completely eliminates residual gaps. This active clamping method replaces the "passive contact" of the traditional slot, ensuring that the connector has no room to move within the positioning groove formed by the positioning plate 225. Even when subjected to inertial forces or gravity during flipping, it will not shift.

[0050] Third, the bidirectional guiding structure ensures positioning stability. The positioning plate 225, through the bidirectional guiding cooperation of the slider 2251, the slide groove 223, and the slide rod 226, has a precise movement trajectory and will not deviate or tilt, ensuring that the positioning center remains consistent before and after flipping. At the same time, the elastic clamping force has a certain buffering effect, which can absorb the minor vibrations generated during the welding process and further prevent the connector position from shifting.

[0051] Through the above design, the equipment controls the positioning gap within a very small range, and the positional offset during the flipping process is negligible, which fully meets the precise positioning requirements of laser welding for micro-pitch pins and effectively solves the welding deviation problem caused by the gap in traditional slot positioning.

[0052] Multi-sided welding of rectangular connectors requires a positioning structure that can adapt to different orientations. Traditional fixtures typically only support welding in one orientation, necessitating fixture replacement to complete welding on the other side, which is cumbersome and makes it difficult to guarantee positioning accuracy. This equipment perfectly solves this problem through the following design: First, the synergy between the opening and closing structure and the flipping function. The hinge connection design of the upper positioning box 21 and the lower positioning component 22 allows the equipment to easily open, close and flip. After the connector is inserted, it can flip in the area enclosed by the positioning plate 225 without being removed. With the corresponding upper and lower laser grooves 211 and 221, welding on both the upper and lower sides can be completed without changing the fixture, completely eliminating the limitations of traditional fixtures on the welding posture.

[0053] Secondly, the synchronously adjustable positioning plate 225 adapts to different posture and size requirements. The difference in the external dimensions of the rectangular connector when it is vertical and horizontal can be easily adapted by the synchronous scaling function of the positioning plate 225. The operator only needs to rotate the knob 241 to adjust the size of the positioning groove formed by the positioning plate 225, without replacing the positioning module, so as to achieve accurate positioning of connectors in different postures by the same fixture.

[0054] Third, the posture self-adaptation capability of the elastic clamping structure. Regardless of whether the connector is in a vertical or horizontal position, the elastic clamping structure can achieve stable clamping through the flexible bonding of the rubber layer 2253. Even if there is a slight deviation in the position of the connector during the posture change, the rubber layer 2253 can automatically adjust the bonding angle to ensure that the clamping force is evenly distributed and avoid positioning failure caused by posture change.

[0055] Through the above design, the equipment realizes the welding requirement of "one fixture for multiple postures". It can complete the multi-sided welding of rectangular connectors without changing the fixture, which greatly simplifies the operation process, improves production efficiency, and ensures the consistency of positioning accuracy when welding in different postures.

[0056] The equipment, through synchronous adjustable positioning, elastic gapless clamping, and bidirectional guiding design, significantly improves positioning accuracy compared to traditional fixtures. It can precisely control the solder joint position, ensuring consistent soldering of fine-pitch pins. During the soldering process, the connector remains stable and undisturbed, with uniform solder joint formation. The incidence of defects such as cold solder joints and short circuits is significantly reduced, and the heat-affected zone is effectively controlled, preventing performance degradation of surrounding plastic parts due to high-temperature damage. Practical application verification shows that using this equipment increases the yield of connector laser soldering from approximately 85% with traditional fixtures to over 99%, greatly enhancing product quality stability and meeting the soldering quality requirements of high-density, high-performance connectors.

[0057] The openable structure and flexible clamping design reduce connector clamping time from 5-10 minutes with traditional clamps to 1-2 minutes, significantly reducing auxiliary operation time. Multi-position adaptability eliminates the cumbersome steps of changing clamps, shortening the welding cycle of a single product by more than 30%. The convenient adjustment design of the linkage 24 allows operators to adjust positioning dimensions without specialized skills, reducing technical requirements and minimizing production delays caused by improper operation. For small-batch, multi-variety production scenarios, the equipment's rapid changeover capability significantly shortens production line changeover time, resulting in a more significant increase in production efficiency and enabling rapid response to the production needs of different product specifications.

[0058] The equipment's versatility design allows it to be adapted to connectors of various specifications and orientations, significantly reducing the R&D and manufacturing costs of specialized fixtures. Compared to traditional fixture solutions, fixture costs are reduced by more than 60%. The modular structural design allows core components to be replaced individually, lowering equipment maintenance costs and the barrier to entry for use. The equipment's lifespan is extended to more than 5 years, further reducing long-term operating costs. Improved product yield reduces scrap rates and rework costs, while increased production efficiency lowers labor and time costs per unit, resulting in a comprehensive production cost reduction of approximately 40%, bringing significant economic benefits to the enterprise.

[0059] The equipment's positioning adjustment range covers the size specifications of mainstream miniature rectangular connectors. Whether it's a small-sized precision connector or a medium-sized conventional connector, whether it's vertical welding or horizontal welding, stable positioning can be achieved through precise adjustment. The flexible clamping design of the 2253 rubber layer is compatible with connector shells of different materials, including plastic and metal, avoiding surface damage and expanding the equipment's application scenarios. The equipment can be directly integrated into existing laser welding production lines without requiring large-scale modifications to existing lines. It has strong adaptability and can meet the production needs of different enterprises, with broad application prospects.

[0060] The closed structure design of the equipment avoids direct contact between operators and the laser welding area during the welding process, reducing the safety risks caused by laser radiation; the wire limiting design of the limiting strip 23 prevents equipment failure caused by wire entanglement or interference, improving the safety of the production process; the convenience of connector clamping and removal reduces the labor intensity of operators, avoids the physical consumption caused by forceful disassembly and installation during the clamping process of traditional fixtures, improves the operating environment, and enhances the working comfort of operators.

[0061] Traditional welding auxiliary equipment lacks a dedicated wire limiting structure. During the welding process, connector wires are easily tangled due to pulling and flipping, or protrude from the welding area, causing interference and affecting the smooth progress of the welding process. This can even lead to solder joint displacement or wire damage. The limiting strip 23 on the side of the lower positioning component 22 of this equipment adopts an arc-shaped fitting design, which can effectively organize and limit the wires, ensuring they are arranged along a fixed path, preventing tangling or protrusion, ensuring an unobstructed welding area, and preventing connector position displacement due to external force pulling. This guarantees a smooth welding process and the integrity of the wires.

[0062] Traditional rigid clamps typically use metal for their positioning surfaces. During clamping, this rigid contact with the connector surface can easily cause scratches, indentations, and other damage. This is especially problematic for connectors with plastic housings or precision pins, where surface damage can lead to product defects or performance degradation. In this device, the rubber layer 2253 on the inner side of the positioning plate 225 is made of a flexible, wear-resistant material. This flexible contact with the connector surface during clamping ensures clamping stability while effectively preventing surface damage caused by rigid contact. The adaptive adjustment design of the elastic clamping force prevents connector deformation due to over-clamping, ensuring the integrity of the product's appearance and performance after soldering and solving the problem of connector surface damage caused by traditional clamps.

[0063] Traditional fixtures are mostly custom-designed, requiring a dedicated fixture for each connector specification. Changing connector types necessitates disassembling the old fixture, installing the new one, and recalibrating the positioning accuracy, a cumbersome and time-consuming process that impacts production efficiency. Furthermore, the large inventory of these custom fixtures increases warehousing costs. This equipment's synchronous adjustable positioning mechanism can adapt to various connector specifications with simple adjustments. Changing connector types only requires rotating knob 241 to adjust the positioning dimensions, eliminating the need to replace the fixture module. Changeover time is reduced to within minutes, significantly improving efficiency. Simultaneously, it reduces the number of custom fixtures, lowers warehousing costs, and solves the problem of cumbersome changeovers for multiple specifications, making it particularly suitable for small-batch, multi-variety production scenarios.

[0064] Traditional fixtures typically adjust the positioning of individual positioning plates 225 independently. This makes it difficult to ensure consistent movement of each plate, easily leading to positioning center misalignment, affecting welding accuracy, and the adjustment process is cumbersome and time-consuming. This equipment uses a synchronous transmission design for its linkage 24. Rotating the knob 241 drives all positioning plates 225 to expand or shrink synchronously, ensuring consistent movement of each plate and maintaining a constant positioning center. This eliminates the need for repeated calibration, provides high adjustment accuracy, and is easy to operate. It solves the problem of poor positioning consistency in traditional fixtures, further improving welding accuracy and operational efficiency.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connector welding auxiliary device, characterized in that, include: Welding part (1); Auxiliary part (2) is located below welding part (1). The auxiliary part (2) includes an upper positioning box (21) and a lower positioning component (22) placed vertically. The upper positioning box (21) and the lower positioning component (22) are connected by hinges on their sides. The lower positioning component (22) is provided with a limiting strip (23) for limiting the wire on its side. The upper center of the upper positioning box (21) is provided with a laser groove (211) for easy laser welding. The upper positioning box (21) is symmetrically provided with push plates (212) on the side of the upper positioning box (21) near the lower positioning component (22). The lower positioning component (22) is provided with a laser groove (221) for easy laser welding at the middle of its lower end. A cavity (222) is provided in the middle of the lower positioning component (22). A positioning plate (225) is slidably connected to the inner wall of the cavity (222). A stop rod (2256) that fits against the push plate (212) is provided at the upper end of the positioning plate (225). The positioning plate (225) is embedded in the symmetrically opened groove (223) on the side of the cavity (222), and a slider (2251) is fixedly connected to the side of the positioning plate (225), one of the sliders (2251) being movably connected to the linkage (24).

2. The connector welding auxiliary equipment according to claim 1, characterized in that: The slide groove (223) has slots spaced apart on the side near the positioning plate (225), and a slide rod (226) is provided through the side of the slide groove (223) away from the positioning plate (225).

3. The connector welding auxiliary equipment according to claim 1, characterized in that: The linkage component (24) includes a knob (241) disposed outside the limiting strip (23). The other end of the knob (241) is fixedly connected to a linkage rod (244). The linkage rod (244) consists of a long rod and two screws, with the two screws symmetrically disposed at both ends of the long rod.

4. The connector welding auxiliary equipment according to claim 3, characterized in that: The screw has a threaded connection to a positioning block (242) on its outer wall. The other end of the positioning block (242) is rotatably connected to a cross link (243). The end of the cross link (243) near the slider (2251) is movably connected to a connecting block (245).

5. The connector welding auxiliary equipment according to claim 2, characterized in that: Another slider (2251) has a circular groove in the middle, and the inside of the circular groove is slidably connected to the slider (226).

6. The connector welding auxiliary equipment according to claim 1, characterized in that: The positioning plate (225) has a limiting groove (2252) on its side. A rubber layer (2253) is slidably connected to the side of the limiting groove (2252). A wedge plate (2254) is fixedly connected to the side of the rubber layer (2253) near the inner wall of the limiting groove (2252). The upper end of the wedge plate (2254) is inclined. The side of the wedge plate (2254) is connected to the inner wall of the limiting groove (2252) through an elastic telescopic rod.

7. The connector welding auxiliary equipment according to claim 6, characterized in that: The limiting groove (2252) has a slot at the top center, and a push rod (2256) is slidably connected to the inner wall of the slot. A spring is sleeved on the outer wall of the push rod (2256). A second inclined wedge plate (2255) is fixedly connected to the bottom end of the push rod (2256). The bottom end of the second inclined wedge plate (2255) is in contact with the upper end of the first inclined wedge plate (2254).

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