Multifunctional automatic tin discharging equipment for welding

Abstract

The invention discloses multifunctional automatic tin discharging equipment for welding, and relates to the technical field of tin discharging equipment, the multifunctional automatic tin discharging equipment comprises a tin breaking mechanism, and the tin breaking mechanism comprises a tin breaking hob, a tool apron used for placing the tin breaking hob and an adjusting assembly used for adjusting the position of the tool apron; the tin feeding mechanism comprises a driving tin feeding wheel, a driven pressing wheel and a pressure applying assembly for driving the driven pressing wheel to press the driving tin feeding wheel; the pressure applying assembly comprises a tin feeding wheel arm connected with the driven pressing wheel and an elastic unit, one end of the elastic unit is connected with the tin feeding wheel arm, the other end of the elastic unit is fixedly connected with a sliding block, and the sliding block is arranged on a sliding rod fixed to the rack in a sliding mode. A connecting rod is arranged between the tin breaking mechanism and the tin feeding mechanism, one end of the connecting rod is fixedly connected with the tool apron, and the other end of the connecting rod is connected with the sliding block. The tool apron drives the sliding block to move in the horizontal direction through the connecting rod in the moving process in the vertical direction. The tin breaking depth and the tin feeding pressure of the tin wires of different specifications are always in the optimal matching state.

Description

Technical Field

[0001] This invention relates to the technical field of solder tapping equipment, specifically to a multifunctional automatic solder tapping device for welding. Background Technology

[0002] In the field of automated welding, especially in the automatic soldering process of precision electronic components, solder wire with built-in flux is often used as the welding material. In order to ensure effective release of flux and welding quality, the solder wire needs to go through a "solder breaking" process after being fed out and before melting. That is, a cut of a certain depth is made on its surface by a roller. At the same time, the solder wire needs to be stably fed to the solder joint by a pair of solder feeding rollers.

[0003] In actual use, operators need to manually adjust the height of the solder-breaking roller and the mechanism for adjusting the solder feeding pressure based on their personal experience, according to the specifications such as the diameter and hardness of the solder wire. This separate adjustment method has significant shortcomings: if the solder-breaking depth is increased (for thicker and harder solder wires) but the solder feeding pressure is not increased accordingly, it is easy to cause the solder to slip and the solder to be difficult to exit; conversely, if the solder-breaking depth is decreased (for thinner and softer solder wires) but the solder feeding pressure is not reduced accordingly, it may flatten the solder wire or cause abnormal flux extrusion. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multifunctional automatic solder dispensing device for welding.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a multifunctional automatic solder dispensing device for soldering, comprising: A frame, a solder breaking mechanism and a solder feeding mechanism mounted on the frame; The tin-breaking mechanism includes a tin-breaking roller, a blade holder for placing the tin-breaking roller, and an adjustment component for adjusting the position of the blade holder; The solder feeding mechanism includes an active solder feeding wheel, a driven clamping wheel, and a pressure application component that drives the driven clamping wheel to press against the active solder feeding wheel; The pressure application assembly includes a solder feeding wheel arm connected to the driven pressure wheel, an elastic unit whose one end is connected to the solder feeding wheel arm and whose other end is fixedly connected to the slider, and the slider is slidably disposed on a sliding rod fixed to the frame; A connecting rod is provided between the solder breaking mechanism and the solder feeding mechanism. One end of the connecting rod is fixedly connected to the knife holder, and the other end of the connecting rod is connected to the slider. During the vertical movement of the tool holder, the slider is driven to move horizontally via the connecting rod.

[0006] As a preferred embodiment of the present invention, the adjustment component includes: A threaded rod is provided at the lower end of the tool holder, and a limiting block is fixedly connected to the upper end of the threaded rod. The limiting block is engaged inside the limiting groove of the tool holder. An adjusting block is fixedly mounted on the frame, and the adjusting block has a threaded groove inside that mates with the threaded rod. The adjusting handle is fixedly installed at the lower end of the threaded rod.

[0007] As a preferred embodiment of the present invention, the solder feeding wheel arm is rotatably mounted on the frame via a bushing, and the bushing has a rotating shaft at a position corresponding to the frame.

[0008] As a preferred embodiment of the present invention, a support unit is fixedly provided at the lower end of the solder feeding wheel arm, and at least one set of mounting holes are provided on the support unit facing the elastic unit, and a fixing screw is provided on the side of the support unit corresponding to the mounting holes.

[0009] As a preferred embodiment of the present invention, the elastic unit includes a rod that extends into the mounting hole and has a threaded hole, a fixing block fixed to the other end of the rod, and a pressure spring installed on one side of the fixing block.

[0010] As a preferred embodiment of the present invention, the slider has a groove on the side facing the pressure spring, and one end of the pressure spring is disposed inside the groove; The pressure spring is also equipped with a telescopic rod inside, one end of which is fixedly connected to the fixed block, and the other end is slidably disposed inside the groove.

[0011] As a preferred embodiment of the present invention, the slider has an inclined groove at a position facing the connecting rod, and one end of the connecting rod is slidably disposed inside the inclined groove.

[0012] As a preferred embodiment of the present invention, a first driving mechanism is provided on one side of the solder breaking mechanism, and the first driving mechanism is used to drive the solder breaking roller to rotate. A second drive mechanism is provided on one side of the solder feeding mechanism, which is used to drive the active solder feeding wheel to rotate.

[0013] The beneficial effects of this invention are: In this invention, by setting up a solder breaking mechanism and a solder feeding mechanism, the adjustment of the solder breaking depth and the adjustment of the solder feeding pressure are linked together. When the operator changes the vertical position of the knife holder to set the solder breaking depth by adjusting the component, this movement is forcibly converted into the horizontal movement of the slider through the connecting rod, thereby changing the force state of the elastic unit. Finally, the pressure of the driven pressure roller is automatically and synchronously adjusted. This linkage design integrates the adjustment of solder breaking depth and solder feeding pressure into a single operation, avoiding the tedious manual adjustment, ensuring that the solder breaking depth and solder feeding pressure of different specifications of solder wire are always in the optimal matching state, and improving the consistency of soldering quality. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the back of the present invention without the frame.

[0017] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0018] Figure 4 This is a partial structural diagram of the tin feeding mechanism.

[0019] Figure 5 This is a partial structural diagram of the tin feeding mechanism from another perspective.

[0020] Figure 6 This is a partial structural diagram of the present invention.

[0021] Figure 7 for Figure 6 A magnified view of a portion of point B in the middle.

[0022] Figure 8 A partial cross-sectional schematic diagram of the pressure-applying component.

[0023] In the diagram: 1. Frame; 2. Solder breaking mechanism; 21. Solder breaking roller; 22. Knife holder; 221. Limiting groove; 23. Adjusting component; 231. Threaded rod; 232. Limiting block; 233. Adjusting block; 2331. Threaded groove; 234. Adjusting handle; 3. Solder feeding mechanism; 31. Active solder feeding wheel; 32. Driven pressure wheel; 33. Pressure application component; 331. Solder feeding wheel arm; 332. Slider; 3321. Slide groove; 3322. Inclined groove; 333. Elastic unit; 3331. Insert rod; 3332. Threaded hole; 3333. Pressure spring; 3334. Telescopic rod; 334. Sliding rod; 335. Bushing; 336. Rotating shaft; 337. Support unit; 3371. Mounting hole; 338. Fixing screw; 4. Connecting rod; 5. First drive mechanism; 6. Second drive mechanism. Detailed Implementation

[0024] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-2 As shown, a multifunctional automatic solder dispensing device for soldering includes a frame 1, a solder breaking mechanism 2 and a solder feeding mechanism 3 mounted on the frame 1; the frame 1 is typically composed of a base plate, side plates and necessary reinforcing structures connected by screws to ensure overall rigidity and resist vibration during operation; The solder breaking mechanism 2 is fixedly installed on the frame 1. Its core function is to cut the surface of the solder wire in the conveying process to a certain depth, i.e., to break the solder and release the flux inside. The solder breaking mechanism 2 includes a solder breaking roller 21, a knife holder 22 for placing the solder breaking roller 21, and an adjustment component 23 for adjusting the position of the knife holder 22. The solder feeding mechanism 3 is also fixedly mounted on the frame 1, located at the front end of the solder breaking mechanism 2. Its core function is to clamp and stably feed solder wire. The solder feeding mechanism 3 includes an active solder feeding wheel 31, a driven clamping wheel 32, and a pressure application component 33 that drives the driven clamping wheel 32 to press against the active solder feeding wheel 31. The surface of the active solder feeding wheel 31 has anti-slip texture to increase friction. The driven clamping wheel 32 is arranged opposite to the active solder feeding wheel 31, together forming a wheel pair for clamping solder wire. The pressure application assembly 33 includes a solder feeding wheel arm 331 connected to the driven pressure wheel 32, and an elastic unit 333, one end of which is connected to the solder feeding wheel arm 331 and the other end of which is fixedly connected to the slider 332. The slider 332 is slidably mounted on a sliding rod 334 fixed to the frame 1, that is, the slider 332 is slidably mounted on the sliding rod 334, and one end of the sliding rod 334 is fixed to the frame 1. The driven pressure wheel 32 is rotatably mounted on one end of the solder feeding wheel arm 331. A connecting rod 4 is provided between the solder breaking mechanism 2 and the solder feeding mechanism 3. One end of the connecting rod 4 is fixedly connected to the knife holder 22, and the other end of the connecting rod 4 is connected to the slider 332. During the vertical movement of the tool holder 22, the slider 332 is driven to move horizontally via the connecting rod 4.

[0027] When it is necessary to increase the solder breaking depth to handle thicker and harder solder wires, the knife holder 22 is driven to move vertically upward by adjusting component 23. This movement is immediately transmitted through the fixed connecting rod 4. The other end of the connecting rod 4 acts on the slider 332. Since the connection between the connecting rod 4 and the slider 332 is designed to convert vertical movement into horizontal movement, the slider 332 is pushed to move horizontally along the sliding rod 334. The movement of the slider 332 stretches the elastic unit 333, increasing the force exerted by the elastic unit 333 on the long end of the solder feeding wheel arm 331. Through the lever principle, this increased force is amplified and transmitted to the driven pressure wheel 32 at the front end of the solder feeding wheel arm 331, causing it to press the active solder feeding wheel 31 and the solder wire therein with greater pressure.

[0028] It should be noted that the frame 1 is equipped with a vertical slide rail (for example, a pair of precision guide posts and linear bearings), which constrains the tool holder 22 to move smoothly only in the vertical direction. The arrows in the attached diagram indicate the direction of movement of the solder wire.

[0029] Furthermore, such as Figures 2-3 As shown, the adjustment assembly 23 includes a threaded rod 231, an adjustment block 233, and an adjustment handle 234. A threaded rod 231 is disposed at the lower end of the tool holder 22, and a limiting block 232 is fixedly connected to the upper end of the threaded rod 231. The limiting block 232 is engaged inside the limiting groove 221 of the tool holder 22. The threaded rod 231 is the direct actuator for the adjustment action. It is located at the lower end of the tool holder 22, and its axial (vertical) movement directly acts on the tool holder 22. In order to ensure transmission accuracy and durability, the threaded rod 231 usually adopts a fine thread. The adjusting block 233 is an independent part fixedly mounted on the frame 1 or a structural part integrally formed with the frame 1. Inside the adjusting block 233, there is a threaded groove 2331 that precisely matches the thread of the threaded rod 231. In this way, the threaded rod 231 and the adjusting block 233 together form a helical transmission pair. When the threaded rod 231 rotates, since the adjusting block 233 is fixed, according to the principle of helical transmission, the threaded rod 231 will generate axial lifting and lowering motion while rotating.

[0030] Adjusting block 233 is fixedly mounted on the frame 1 and the interior of adjusting block 233 is provided with threaded groove 2331 that cooperates with threaded rod 231; To prevent the threaded rod 231 from accidentally axially disengaging during adjustment or operation, and to ensure reliable force transmission from its tip to the tool holder 22, a limiting block 232 is fixedly connected to the upper end of the threaded rod 231. Correspondingly, a limiting groove 221 is machined at the bottom or side of the tool holder 22, and the limiting block 232 is engaged inside the limiting groove 221 of the tool holder 22. This snap-fit ​​relationship allows the limiting block 232 on the threaded rod 231 to rotate freely within the limiting groove 221 when the threaded rod 231 rotates. The axial movement (rising or falling) of the threaded rod 231 will rigidly push or pull the tool holder 22 to move synchronously through the mating surface of the limiting block 232 and the limiting groove 221.

[0031] The adjusting handle 234 is fixedly installed at the lower end of the threaded rod 231, and a scale mark is provided next to the adjusting handle 234 or on the frame 1; To facilitate adjustment by the operator, an adjustment handle 234 is fixedly installed at the lower end of the threaded rod 231. The operator can drive the entire threaded transmission pair to work by rotating the adjustment handle 234. To improve the intuitiveness and accuracy of the adjustment, scale markings can be provided next to the adjustment handle 234 or on the frame 1; For example, scale lines representing the lifting amount of the threaded rod 231 can be printed on the cover fixed to the frame 1, and a pointer can be set on the adjusting handle 234; or, the scale can be marked directly on the rim of the adjusting handle 234 and aligned with the fixed mark on the frame 1, and the scale marking can directly indicate the lifting distance (millimeters). Preferably, the recommended setting is directly marked with the corresponding setting for commonly used solder wire diameters (such as 0.5mm, 0.8mm, 1.0mm, etc.). The operator only needs to rotate the adjustment handle 234 to the corresponding scale according to the solder wire specifications to quickly complete the initial setting of the solder breaking depth and obtain the matching solder feeding clamping force synchronously through the linkage mechanism.

[0032] Furthermore, such as Figures 1-5 As shown, the solder feeding wheel arm 331 is rotatably mounted on the frame 1 via a bushing 335, and the bushing 335 is provided with a rotating shaft 336 at a position corresponding to the frame 1.

[0033] The bushing 335 is an annular or cylindrical sliding bearing or rolling bearing assembly, the inner hole of which engages with a shaft that serves as a fixed rotation center. The solder feeding wheel arm 331 is rotatably mounted on the frame 1 through the bushing 335. This means that the solder feeding wheel arm 331 is not directly hinged to the frame 1, but achieves relative rotation through the intermediate bushing 335.

[0034] The rotating shaft 336 is the rotation center of the solder feeding wheel arm 331. Its function is to provide stable support for the solder feeding wheel arm 331, ensure that the solder feeding wheel arm 331 rotates around a fixed axis, and ensure the accuracy of pressure transmission. The solder feeding wheel arm 331 can rotate around the rotating shaft 336 through the bushing 335 on it. It should be noted that the solder feeding wheel arm 331 can be made of 45 steel after quenching and tempering. The length is designed according to the lever arm amplification requirements. Typically, the length of the power arm (the distance from the shaft 336 to the connection point of the elastic unit 333) is 80mm, and the length of the resistance arm (the distance from the shaft 336 to the connection point of the driven pressure wheel 32) is 20mm. The lever arm ratio is 4:1, which can amplify the preload of the elastic unit 333 by 4 times. For ease of understanding, only the attached diagram shows... Figure 1 The frame is shown, but the fixing relationships between the bushing and the frame, the support unit and the frame are not shown. However, in actual use, the bushing, support unit and other structures need to be installed on the frame.

[0035] During the solder feeding process, the active solder feeding wheel 31 rotates at a constant speed under the drive of the second drive mechanism 6. The solder wire is conveyed forward under the friction between the active solder feeding wheel 31 and the driven clamping wheel 32. At this time, the driven clamping wheel 32 rotates around its own pin under the friction of the solder wire. At the same time, the solder feeding wheel arm 331 will be subjected to the reaction force transmitted by the solder wire. Since the solder feeding wheel arm 331 forms a low-friction rotational engagement with the rotating shaft 336 through the bushing 335, the solder feeding wheel arm 331 can flexibly adapt to the small radial runout of the solder wire. When the solder wire causes radial runout due to diameter deviation or material inhomogeneity, the reaction force will change slightly, causing the solder feeding wheel arm 331 to swing at a small angle around the rotating shaft 336. This small swing can be absorbed by the elastic deformation of the elastic unit 333, ensuring the stability of the solder feeding clamping force and avoiding the phenomenon of solder wire slippage or excessive compression and deformation.

[0036] Similarly, when it is necessary to adjust the amount of solder feeding clamping force (such as to adapt to solder wires of different hardness), the position of the cutter holder 22 is changed by adjusting component 23, which in turn drives the slider 332 to move via connecting rod 4, changing the preload of elastic unit 333. The change in preload of elastic unit 333 will cause the solder feeding wheel arm 331 to deflect around the rotating shaft 336 at different angles: when the preload increases, the deflection angle of the solder feeding wheel arm 331 increases, and the clamping force of the driven clamping wheel 32 on the solder wire increases; when the preload decreases, the deflection angle of the solder feeding wheel arm 331 decreases, and the clamping force decreases. Since the position of rotating shaft 336 is fixed, the deflection trajectory of solder feeding wheel arm 331 is fixed, ensuring that the change of clamping force has good linearity, which facilitates the precise linkage between solder breaking depth and solder feeding clamping force.

[0037] During the process of feeding solder wire, the driven pressure roller 32 may be subjected to a small radial disturbance due to the micro-geometric fluctuations of the solder wire itself. This disturbance will cause the solder feeding wheel arm 331 to swing with a small angular displacement around the lever fulcrum axis. During this process, since the swing end of the solder feeding wheel arm 331 is connected to one end of the pressure spring 3333, and the other end of the pressure spring 3333 is connected to the slider 332, which is strictly constrained by the guide rod and can only slide horizontally, the angular displacement of the solder feeding wheel arm 331 is directly converted into a slight elastic extension and contraction of the pressure spring 3333 along its axis. The change in the force of the pressure spring 3333 is then transmitted to the driven pressure wheel 32 through the lever, forming a smooth and continuous pressure adjustment closed loop, rather than a rigid impact.

[0038] Furthermore, such as Figures 4-6As shown, a support unit 337 is fixedly provided at the lower end of the solder feeding wheel arm 331. The support unit 337 has at least one set of mounting holes 3371 at the position facing the elastic unit 333. The side of the support unit 337 has fixing screws 338 that correspond one-to-one with the mounting holes 3371.

[0039] By setting a support unit 337, the connection position between the elastic unit 333 and the solder feeding wheel arm 331 can be adjusted, thereby adjusting the lever arm or initial pre-tightening state of the elastic unit 333 to adapt to the conveying requirements of solder wires of different specifications and hardness, and improving the process adaptability of the equipment.

[0040] In detail, the support unit 337 is a transition component connecting the solder feeding wheel arm 331 and the elastic unit 333. It is integrally formed or welded to the solder feeding wheel arm 331. The integrally formed structure can ensure the connection strength between the support unit 337 and the solder feeding wheel arm 331, and avoid relative deformation or breakage during the stress process. The support unit 337 is a rectangular block structure.

[0041] Mounting holes 3371 are formed on the end face of the support unit 337 facing the elastic unit 333. At least one set is provided. In this embodiment, three sets of mounting holes 3371 are preferably provided and are evenly distributed along the length of the support unit 337. The number of mounting holes 3371 can be adjusted according to the process adaptability range of the equipment. The more mounting holes 3371 there are, the more precise the adjustment range of the elastic unit 333 is and the stronger the adaptability. The mounting hole 3371 is preferably a threaded hole 3332, with a specification of M6, used to cooperate with the insertion rod 3331 of the elastic unit 333 to realize the detachable connection of the elastic unit 333.

[0042] The function of the fixing screw 338 is to lock the insertion rod 3331 of the elastic unit 333 into the selected mounting hole 3371, preventing the insertion rod 3331 from loosening due to vibration or tension changes during operation of the elastic unit 333, and ensuring the stability of the connection. The fixing screw 338 is opened on the side of the support unit 337, corresponding one-to-one with the mounting hole 3371, and the axis of the fixing screw 338 is perpendicular to the axis of the mounting hole 3371, ensuring that after the fixing screw 338 is tightened, its tip can press against the surface of the insertion rod 3331 to achieve reliable locking.

[0043] It should be noted that different specifications of solder wire require different clamping forces. Ultra-fine solder wire requires less clamping force to avoid being flattened, while coarser solder wire requires more clamping force to ensure that it does not slip. Solder wires of different hardness (such as pure solder wire, tin-lead alloy solder wire, and SAC305 lead-free solder wire) also require different clamping forces. Through the multiple sets of mounting holes 3371 of the support unit 337, the distance between the elastic unit 333 and the shaft 336 of the solder feeding wheel arm 331 can be adjusted, thereby adjusting the amplification factor of the preload of the elastic unit 333 on the solder feeding clamping force, so as to achieve the adaptation of different clamping force requirements.

[0044] For example, when soldering fine solder wire with a diameter of 0.3mm, a smaller solder feeding clamping force is required. In this case, the operator selects the mounting hole 3371 (the first set of mounting holes 3371) on the support unit 337 that is closest to the rotating shaft 336 to install the insertion rod 3331 of the elastic unit 333. The insertion rod 3331 is aligned with the first set of mounting holes 3371, and the insertion rod 3331 is rotated so that it is inserted into the mounting hole 3371 through thread engagement. The insertion rod 3331 is then locked and fixed. Since the mounting hole 3371 is closest to the rotating shaft 336 and has the shortest power arm length (e.g., 60mm), according to the lever principle, the preload amplification factor of the elastic unit 333 is the smallest. Therefore, under the same preload force of the elastic unit 333, the clamping force of the driven clamping wheel 32 on the solder wire is the smallest, which can prevent the ultra-fine solder wire from being flattened.

[0045] When soldering conventional solder wire with a diameter of 0.8mm, select the mounting hole 3371 (second set of mounting holes 3371) in the middle of the support unit 337 to install the insertion rod 3331 of the elastic unit 333. The distance between the mounting hole 3371 and the rotating shaft 336 is moderate (e.g., 70mm), the power arm length is moderate, and the preload amplification factor of the elastic unit 333 is moderate. It can provide conventional solder feeding clamping force to ensure stable solder wire feeding while avoiding excessive compression. The installation process is the same as above: insert the insertion rod 3331 and tighten the corresponding fixing screw 338 to achieve a firm connection.

[0046] When soldering thick solder wire with a diameter of 1.2mm or SAC305 lead-free solder wire with high hardness, a large solder feeding clamping force is required. At this time, the insertion rod 3331 of the elastic unit 333 is installed in the mounting hole 3371 (the third set of mounting holes 3371) on the support unit 337 that is farthest from the rotating shaft 336. This mounting hole 3371 is the farthest from the rotating shaft 336 (e.g., 80mm) and has the longest power arm, providing a sufficiently large solder feeding clamping force to ensure that the thick or hard solder wire does not slip and achieves stable feeding.

[0047] Furthermore, such as Figures 4-8As shown, the elastic unit 333 includes a rod 3331 that extends into the mounting hole 3371 and has a threaded hole 3332, a fixing block fixed to the other end of the rod 3331, and a pressure spring 3333 installed on one side of the fixing block.

[0048] The insertion rod 3331 is the part that connects the elastic unit 333 to the support unit 337 at the lower end of the solder feeding wheel arm 331. The insertion rod 3331 is designed to extend into the mounting hole 3371, and its size is adapted to the mounting hole 3371 to ensure smooth insertion and positioning. After the insertion rod 3331 is inserted into the selected mounting hole 3371, the corresponding fixing screw 338 is tightened so that its end is screwed into or presses against the threaded hole 3332 on the insertion rod 3331, thereby firmly locking the insertion rod 3331 in the mounting hole 3371 and preventing its axial rotation.

[0049] The fixed block serves as the base for supporting the pressure spring 3333. One end of the pressure spring 3333 is fixed or abuts against one side of the fixed block. The pressure spring 3333 is typically a cylindrical helical spring, and its other end is connected to the slider 332. Therefore, when the slider 332 is driven to move by the connecting rod 4, the pressure spring 3333 is stretched or compressed. The force generated is transmitted through the fixed block and the insert rod 3331 to the support unit 337 of the solder feeding wheel arm 331, thereby forming a torque that causes the solder feeding wheel arm 331 to swing.

[0050] Furthermore, such as Figure 8 As shown, the slider 332 has a groove 3321 on the side facing the pressure spring 3333, and one end of the pressure spring 3333 is disposed inside the groove 3321. The pressure spring 3333 is also provided with a telescopic rod 3334 inside. One end of the telescopic rod 3334 is fixedly connected to the fixed block, and the other end is slidably disposed inside the slide groove 3321.

[0051] The telescopic rod 3334 is typically a sleeve or guide rod structure. The end of the telescopic rod 3334 extends into the slide groove 3321 together with the end of the pressure spring 3333, and can slide freely in the slide groove 3321 along its extension direction.

[0052] In detail, since the insertion rod 3331 can be selectively inserted into the mounting holes 3371 at different positions on the support unit 337 to achieve coarse adjustment of the initial force arm of the elastic unit 333 acting on the solder feeding wheel arm 331, when the insertion rod 3331 is inserted into different mounting holes 3371, the relative position of the entire elastic unit 333 in the horizontal direction will change accordingly. By setting the slide groove 3321, when the insertion rod 3331 moves the fixing block due to the selection of different mounting holes 3371, the telescopic rod 3334 will move synchronously with the fixing block, and its end will slide to a new equilibrium position in the slide groove 3321 accordingly. At the same time, the end of the pressure spring 3333 connected to the slider 332 can also adaptively adjust its contact point or connection position in the slide groove 3321.

[0053] At this time, when the connecting rod 4 drives the slider 332 to move horizontally, the sliding cooperation between the groove 3321 and the telescopic rod 3334 can ensure that the extension and contraction deformation of the pressure spring 3333 still proceeds along its axial direction, and the horizontal displacement of the slider 332 can still be accurately converted into the deformation of the pressure spring 3333. This ensures that the subsequent fine-tuning function of the solder breaking depth and solder feeding clamping force by rotating the adjusting handle 234 is not affected, and the linearity and accuracy of force transmission are always maintained.

[0054] It should be noted that the telescopic rod 3334 further enhances the stability of the pressure spring 3333. One end of the telescopic rod 3334 is fixedly connected to the fixed block, and the other end is slidably disposed inside the groove 3321 of the slider 332. This structure ensures that the axis of the pressure spring 3333 is always precisely guided by the telescopic rod 3334 during the telescopic deformation process, thereby strictly limiting the deformation to the axial direction and effectively preventing the pressure spring 3333 from lateral bending or instability.

[0055] Furthermore, such as Figure 7 As shown, the slider 332 has a groove 3322 at a position facing the connecting rod 4, and one end of the connecting rod 4 is slidably disposed inside the groove 3322.

[0056] Among them, the inclined groove 3322 is an integrally machined inclined groove structure on the side of the slider 332 facing the connecting rod 4. Its core function is to provide an inclined guide trajectory, which converts the vertical force transmitted by the connecting rod 4 into the horizontal component force that drives the slider 332 to move horizontally.

[0057] In detail, when the tool holder 22 is displaced vertically under the drive of the adjustment component 23, the connecting rod 4, which is rigidly fixed to the tool holder 22, will also produce a strict vertical movement. Since the other end of the connecting rod 4 is constrained in the inclined groove 3322 of the slider 332, its vertical movement component is guided by the side walls of the inclined groove 3322. The inclined surface of the inclined groove 3322 decomposes the vertical force applied to the end of the connecting rod 4. One component is along the tangent direction of the inclined groove 3322, and the other component is perpendicular to the inclined surface and is converted into a horizontal component that pushes the slider 332 to move along its guiding direction.

[0058] Furthermore, such as Figures 1-2 As shown, a first drive mechanism 5 is provided on one side of the solder breaking mechanism 2. The first drive mechanism 5 is used to drive the solder breaking roller 21 to rotate. This mechanism usually includes a drive motor (such as a stepper motor or DC motor) and necessary transmission components (such as gears, synchronous belts or couplings). A second drive mechanism 6 is provided on one side of the solder feeding mechanism 3. The second drive mechanism 6 is used to drive the active solder feeding wheel 31 to rotate.

[0059] Before the equipment starts working, the operator has completed the linkage setting of the solder breaking depth and the solder feeding clamping force according to the solder wire specifications through the adjustment handle 234. After the equipment is started, the first drive mechanism 5 and the second drive mechanism 6 can be started independently or synchronously. The second drive mechanism 6 drives the active solder feeding wheel 31 to rotate. Relying on the preset solder feeding clamping force, it clamps and stably feeds the solder wire forward together with the driven clamping wheel 32. At the same time, the first drive mechanism 5 drives the solder breaking roller 21 to rotate. The solder wire being fed passes under the rotating solder breaking roller 21, and the cutting edge of the roller cuts the surface of the solder wire continuously and evenly at a preset depth.

[0060] Work process: The operator first rotates the adjustment handle 234 according to the specifications of the solder wire currently being used. The adjustment handle 234 drives the threaded rod 231 to rotate within the threaded groove 2331 of the adjustment block 233. Since the adjustment block 233 is fixed to the frame 1, the threaded rod 231 generates axial displacement while rotating. The limiting block 232 at the upper end of the threaded rod 231 cooperates with the limiting groove 221 at the bottom of the tool holder 22 to transmit the axial movement of the threaded rod 231 to the tool holder 22, driving the tool holder 22 to rise and fall. When the knife holder 22 moves upward, the solder breaking roller 21 moves upward simultaneously, increasing the solder breaking depth; when the knife holder 22 moves downward, the solder breaking roller 21 moves downward, decreasing the solder breaking depth. Meanwhile, since one end of the connecting rod 4 is rigidly fixed to the tool holder 22, the vertical displacement of the tool holder 22 is transmitted to the slider 332 through the connecting rod 4. The other end of the connecting rod 4 slides in the inclined groove 3322 of the slider 332. The inclined structure of the inclined groove 3322 converts the vertical motion component into the horizontal component force, pushing the slider 332 to move horizontally along the sliding rod 334. The horizontal displacement of the slider 332 changes the deformation of the pressure spring 3333, thereby adjusting the preload of the elastic unit 333. The increased preload is transmitted to the support unit 337 of the solder feeding wheel arm 331 through the insert rod 3331 and the fixing block, causing the solder feeding wheel arm 331 to deflect around the rotating shaft 336, driving the driven pressure wheel 32 to press against the active solder feeding wheel 31 with greater force. The reduced preload reduces the clamping force of the driven clamping wheel 32 accordingly. After adjustment, the self-locking characteristic of the threaded pair remains stable at the set position, and the entire linkage system is locked in the current parameter state.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional automatic solder dispensing device for soldering, characterized in that, include: A frame (1), a solder breaking mechanism (2) and a solder feeding mechanism (3) mounted on the frame (1); The tin breaking mechanism (2) includes a tin breaking roller (21), a blade holder (22) for placing the tin breaking roller (21), and an adjustment component (23) for adjusting the position of the blade holder (22). The solder feeding mechanism (3) includes an active solder feeding wheel (31), a driven pressure wheel (32), and a pressure application component (33) that drives the driven pressure wheel (32) to press against the active solder feeding wheel (31). The pressure application assembly (33) includes a solder feeding wheel arm (331) connected to the driven pressure wheel (32), an elastic unit (333) with one end connected to the solder feeding wheel arm (331) and the other end fixedly connected to the slider (332), and the slider (332) is slidably disposed on a sliding rod (334) fixed on the frame (1). A connecting rod (4) is provided between the solder breaking mechanism (2) and the solder feeding mechanism (3). One end of the connecting rod (4) is fixedly connected to the knife holder (22), and the other end of the connecting rod (4) is connected to the slider (332). During the vertical movement of the cutter holder (22), the slider (332) is driven to move horizontally via the connecting rod (4).

2. The multifunctional automatic solder dispensing device for welding according to claim 1, characterized in that, The adjustment component (23) includes: A threaded rod (231) is provided at the lower end of the tool holder (22), and a limiting block (232) is fixedly connected to the upper end of the threaded rod (231). The limiting block (232) is engaged in the limiting groove (221) of the tool holder (22). An adjusting block (233) is fixedly mounted on the frame (1), and the interior of the adjusting block (233) is provided with a threaded groove (2331) that cooperates with the threaded rod (231). The adjusting handle (234) is fixedly installed at the lower end of the threaded rod (231).

3. The multifunctional automatic solder dispensing device for welding according to claim 1, characterized in that, The solder feeding wheel arm (331) is rotatably mounted on the frame (1) via a bushing (335), and the bushing (335) is provided with a rotating shaft (336) at a position corresponding to the frame (1).

4. The multifunctional automatic solder dispensing device for welding according to claim 1, characterized in that, The lower end of the solder feeding wheel arm (331) is fixedly provided with a support unit (337). The support unit (337) has at least one set of mounting holes (3371) at the position facing the elastic unit (333). The side of the support unit (337) is provided with fixing screws (338) that correspond one-to-one with the mounting holes (3371).

5. The multifunctional automatic solder dispensing device for welding according to claim 4, characterized in that, The elastic unit (333) includes a rod (3331) that extends into the mounting hole (3371) and has a threaded hole (3332), a fixing block fixed to the other end of the rod (3331), and a pressure spring (3333) installed on one side of the fixing block.

6. The multifunctional automatic solder dispensing device for welding according to claim 5, characterized in that, The slider (332) has a groove (3321) on the side facing the pressure spring (3333), and one end of the pressure spring (3333) is disposed inside the groove (3321); The pressure spring (3333) is also provided with a telescopic rod (3334) inside. One end of the telescopic rod (3334) is fixedly connected to the fixed block, and the other end is slidably disposed inside the slide groove (3321).

7. The multifunctional automatic solder dispensing device for welding according to claim 1, characterized in that, The slider (332) has a groove (3322) at a position facing the connecting rod (4), and one end of the connecting rod (4) is slidably disposed inside the groove (3322).

8. The multifunctional automatic solder dispensing device for welding according to claim 1, characterized in that, A first driving mechanism (5) is provided on one side of the tin breaking mechanism (2), and the first driving mechanism (5) is used to drive the tin breaking roller (21) to rotate. A second drive mechanism (6) is provided on one side of the solder feeding mechanism (3), which is used to drive the active solder feeding wheel (31) to rotate.

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