Electric connector automatic tin soldering equipment based on mechanical arm

Abstract

The utility model discloses an electric connector automatic tin soldering device based on a mechanical arm. The electric connector automatic tin soldering device comprises a mechanical arm mounting flange, a base, a soldering iron module, a wire guiding module and a tin discharging module. The base is of a flat plate structure, one end of the base is connected with the mechanical arm mounting flange, and the soldering iron module, the wire guiding module and the tin discharging module are fixed to a flat plate. The soldering iron module drives the electric soldering iron to move to a welding spot position, the wire guiding module is located between the soldering iron module and the tin outlet module, and the inner conduit extends out of a wire to a to-be-welded position of the electric connector; and a tin wire is arranged in the tin outlet module, is led out and is in contact with the tip of an electric soldering iron in the soldering iron module. According to the invention, automatic tin soldering operation on the electric connector is realized.

Description

Technical Field

[0001] This utility model relates to an automatic soldering device for electrical connectors based on a robotic arm, belonging to the field of soldering technology. Background Technology

[0002] With the ever-increasing demands for modern production efficiency, there is a growing need for automation in all processes on the production line. Electrical connectors, with their numerous solder joints, high repetition, and long soldering time, are among the processes most in dire need of automation on the production line. This is due to the low efficiency and high rate of incomplete soldering associated with manual soldering. Utility Model Content

[0003] The technical problem solved by this utility model is to overcome the shortcomings of the prior art and propose an automatic soldering device for electrical connectors based on a robotic arm. Through the structural design of the soldering iron module, the wire guiding module and the solder dispensing module, the automatic soldering operation of the solder joints of the electrical connector is realized.

[0004] The technical solution of this utility model is:

[0005] An automated soldering device for electrical connectors based on a robotic arm includes a robotic arm mounting flange, a base, a soldering iron module, a wire guiding module, and a solder dispensing module;

[0006] The robotic arm mounting flange is connected to the robotic arm;

[0007] The base is a flat plate structure, with one end connected to the mounting flange of the robotic arm. The soldering iron module, wire guide module and solder dispensing module are fixed on the flat plate.

[0008] The soldering iron module includes an electric soldering iron, a motor, a slide table and a cylinder adapter plate, an adapter slider, and a rotary slide table. The motor's lead screw drive shaft is embedded in the motor adapter slider, and the motor adapter slider and the rotary slide table are connected. The rotary slide table and the slide table are connected to the cylinder adapter plate. The slide table and the cylinder adapter plate are connected to the electric soldering iron.

[0009] The solder dispensing module contains solder wire, which is led out and comes into contact with the tip of the soldering iron in the soldering iron module. The solder wire melts under the heating of the soldering iron.

[0010] The wire guiding module is located between the soldering iron module and the solder dispensing module. It is equipped with an inner conduit containing wires. The inner conduit extends the wires, and the tip of the wires contacts the tip of the soldering iron in the soldering iron module. The wires also come into contact with the solder wire melted on the soldering iron tip.

[0011] Furthermore, the wire guiding module includes a wire guiding bracket, an outer conduit, an inner conduit, a limiting block, a limiting screw, and a wire;

[0012] The wire guide bracket serves as the base of the entire wire guide module, supporting all other components.

[0013] The outer conduit is a funnel-shaped stepped shaft conduit with milled grooves on the side, wherein the outer diameter of the stepped shaft is interference-fitted with the circular through hole of the wire guide bracket.

[0014] The inner conduit is a funnel-shaped conduit with an integral outer diameter that is clearance-fitted to the inner diameter of the outer conduit, and has milled grooves on its side. The wire is inside the inner conduit.

[0015] The limiting block is connected to the upper surface of the inner conduit, and the limiting screw is connected to the upper surface of the outer conduit.

[0016] Furthermore, the solder dispensing module includes a control cylinder, a solder dispensing base, a solder wire holder module, a solder pressing mechanism, and a solder guiding mechanism;

[0017] The solder dispensing base is installed on the base, and the solder wire holder module, the solder pressing mechanism and the solder guiding mechanism are fixed on the solder dispensing base;

[0018] The solder wire frame module is equipped with solder wire;

[0019] The solder pressing mechanism is equipped with two plastic rollers, and the solder wire in the solder wire holder module passes between the two plastic rollers;

[0020] The solder guiding mechanism guides the solder wire that passes through the solder pressing mechanism. The control cylinder controls the movement of the solder guiding mechanism so that the guide point contacts the tip of the soldering iron in the soldering iron module.

[0021] Furthermore, the solder wire holder module includes a solder wire support base, a solder wire support inner shaft, a shaft retainer, a deep groove ball bearing, a bearing cap, a plastic sleeve, and solder wire;

[0022] The solder wire support seat has a circular through hole on its side, through which the deep groove ball bearing and the inner shaft of the solder wire support pass.

[0023] The deep groove ball bearing is respectively connected to the bearing cap and shaft retaining ring. Its inner diameter is transitionally fitted with the inner shaft of the solder wire support, and its outer diameter is clearance fitted with the circular through hole of the solder wire support seat.

[0024] One end of the solder wire support inner shaft passes through the inner diameter of the deep groove ball bearing, and the other end transitions into the inner diameter of the plastic sleeve.

[0025] The outer diameter of the plastic sleeve is fitted with the solder wire with a clearance, so that the solder wire is inserted into the plastic sleeve.

[0026] Furthermore, the tin-pressing mechanism includes a motor support plate, a motor, plastic roller No. 1, plastic roller No. 2, a sliding shaft, a rolling bearing, a sliding shaft base, and a sliding cover plate;

[0027] The motor support plate serves as the base of the entire tin-pressing mechanism. It is an L-shaped thick stainless steel plate, with one side of the L-shape connected to the base and the other side of the L-shape serving as a frame to fix the motor and sliding shaft base.

[0028] The motor is connected to plastic roller No. 1 via a motor shaft;

[0029] The first plastic roller and the second plastic roller are placed tangentially;

[0030] The second plastic roller is fitted onto the sliding shaft. The second plastic roller is coaxial with the center hole of the sliding shaft base. The sliding shaft and the inner diameter of the rolling bearing are transitionally fitted. The outer diameter of the rolling bearing is embedded in a through hole of the same diameter on the sliding shaft base.

[0031] Each corner of the sliding cover plate has a straight groove through hole, which is connected to the sliding shaft base and the motor support plate; the center of the sliding cover plate has a groove through which the motor shaft and the sliding shaft pass.

[0032] Furthermore, the motor support plate, which serves as a frame, has straight slot through holes on its surface, and the sliding shaft base is connected to the motor support plate through the straight slot through holes; by moving the sliding shaft base, the center distance between plastic roller No. 1 and plastic roller No. 2 is adjusted so that solder wires of different diameters can pass between the two plastic rollers.

[0033] Furthermore, the solder guiding mechanism includes a rotary slide, a solder outlet base, a solder outlet shaft, an outer solder outlet joint, an inner solder outlet joint, and a solder outlet tube;

[0034] The rotary slide serves as the base of the entire solder guiding mechanism and is connected to the base of the equipment.

[0035] The solder ejection shaft is a deformed shaft with four planes cut in the XY direction of a cylindrical surface. The bottom end of the solder ejection shaft is provided with an axial threaded hole, which is connected and fixed to the solder ejection outer joint through the axial threaded hole.

[0036] The outer solder outlet joint is a U-shaped component, which is fixedly connected to the solder outlet shaft in the Z direction and connected to the inner solder outlet joint in the X direction.

[0037] The inner joint of the solder outlet connects to the outlet end of the solder outlet tube, controlling the angle of the outlet so that the outlet just contacts the tip of the soldering iron.

[0038] Furthermore, the outer solder outlet joint is connected to the inner solder outlet joint in the X direction via bolts and nuts. When the bolt and nut connection is loose, the inner solder outlet joint rotates around the bolt to adjust the angle. After the angle is adjusted, the bolt and nut are tightened to fix the angle of the inner solder outlet joint.

[0039] Furthermore, the solder guiding mechanism is also provided with an extension shaft. One end of the extension shaft is axially threaded to the lower part of the solder outlet joint, and the other end is connected to the solder outlet tube, thereby extending the adjustment stroke of the outlet end of the solder outlet tube.

[0040] Furthermore, the soldering iron module includes a motor support plate, a motor, a motor adapter slider, a rotary slide, a slide-to-cylinder adapter plate, an electric soldering iron, an electric soldering iron pressure plate, a sensor guide rail, and a sensor;

[0041] The motor support plate has an L-shaped structure and is mounted on the base, serving as the base of the entire soldering iron module to support all other components.

[0042] The motor is fixed on the plane connecting the motor support plate and the base, and is connected to the motor adapter slider; the other plane of the motor support plate is connected to a parallel sensor guide rail, on which multiple sensors are installed from top to bottom.

[0043] The upper surface of the motor adapter slider is provided with a circular through hole, and the lead screw drive shaft of the motor is embedded in the circular through hole; the side of the motor adapter slider is threadedly connected to the bottom surface of the rotary slide.

[0044] The rotary slide and the bottom surface of the slide are threadedly connected to the cylinder adapter plate;

[0045] The slide table and cylinder adapter plate are provided with a circular through hole, which is tightly fitted with the cylindrical outer diameter of the soldering iron.

[0046] The soldering iron pressure plate presses against one side of the soldering iron and is threadedly connected to the slide table and cylinder adapter plate to press the soldering iron firmly.

[0047] The advantages of this utility model compared with the prior art are as follows:

[0048] (1) The soldering iron module designed in this invention uses a motor as a drive to drive the motor adapter slider, the rotating slide, the slide and cylinder adapter plate, the soldering iron, and the soldering iron pressure plate together as a whole to make axial movement, so that the soldering iron can achieve downward displacement. The sensor is used to control the specific displacement of the soldering iron and control the motor to stop, so that the soldering iron reaches the soldering position.

[0049] (2) The wire guiding module designed in this invention can form an opening by rotating the inner guide tube through a moving limiting block, thereby aligning its long milled groove with the long milled groove of the outer guide tube. When the long milled grooves of the inner and outer guide tubes are misaligned, the wire guiding module can achieve closed guidance.

[0050] (3) The solder ejection module designed in this invention uses a control cylinder as a drive to drive the solder ejection base and solder wire frame module to move downward as a whole, so that the tip of the solder ejection tube can be displaced downward and reach the melting position, that is, the position where the tip of the solder ejection tube contacts the tip of the soldering iron. Attached Figure Description

[0051] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0052] Figure 1 This is a schematic diagram of the structure of the automatic soldering equipment for electrical connectors according to an embodiment of this utility model;

[0053] Figure 2 This is a schematic diagram of the soldering iron module structure according to an embodiment of the present invention;

[0054] Figure 3 This is a schematic diagram of the wire guiding module structure according to an embodiment of the present utility model;

[0055] Figure 4 This is a schematic diagram of the tin-discharging module structure according to an embodiment of the present invention;

[0056] Figure 5 This is a schematic diagram of the solder wire frame module structure according to an embodiment of the present invention;

[0057] Figure 6 This is a schematic diagram of the tin-pressing mechanism in an embodiment of the present invention;

[0058] Figure 7 This is a schematic diagram of the solder guiding mechanism in an embodiment of the present invention. Detailed Implementation

[0059] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0060] This utility model proposes an automatic soldering device for electrical connectors based on a robotic arm, such as... Figure 1 As shown, it includes a robotic arm mounting flange 1, a large base 2, a soldering iron module 3, a wire guide module 4, and a solder dispensing module 5. The robotic arm mounting flange 1 is the adapter connecting the entire actuator to the robotic arm, and the large base 2 is a large flat surface that fixes the soldering iron module 3, the wire guide module 4, and the solder dispensing module 5 together.

[0061] Soldering iron module 3, as shown Figure 2As shown, the module includes a motor support plate 6, a motor 7, a motor adapter slider 8, a medium-precision rotary slide 9, a slide-to-cylinder adapter plate 10, a soldering iron 11, a soldering iron pressure plate 12, a sensor guide rail 13, and a sensor 14. The motor support plate 6 serves as the base of the entire soldering iron module, supporting all other components. The motor 7 rests flat in the L-shaped groove of the motor support plate. The lead screw drive shaft of the motor 7 is embedded in the circular through-hole on the upper surface of the motor adapter slider 8. The right side of the motor adapter slider 8 is threadedly connected to the large bottom surface of the medium-precision rotary slide 9. The disc on the right side of the medium-precision rotary slide 9 and the slide are threadedly connected to the large bottom surface of the cylinder adapter plate 10. The circular through-hole in the lower half of the slide-to-cylinder adapter plate 10 is tightly fitted with the cylindrical outer diameter of the soldering iron 11. The soldering iron pressure plate 12 presses against the right side of the soldering iron 11 and is threadedly connected to the two threaded holes of the slide-to-cylinder adapter plate 10, thus pressing the soldering iron firmly. A parallel sensor rail 13 is threaded onto the side of the long shaft of the motor support plate 6, and three sensors 14 are threaded onto the rail from top to bottom.

[0062] When in use, the soldering iron module 3 is driven by the motor 7, which in turn drives the motor adapter slider 8, the medium-precision rotary slide 9, the slide and cylinder adapter plate 10, the soldering iron 11, and the soldering iron pressure plate 12 to move axially as a whole. This movement aims to displace the soldering iron 11 downwards to the soldering position and then return it to the withdrawn position. The sensor 14 controls the specific displacement of the soldering iron 11 and stops the motor movement.

[0063] Wire guiding module 4, as Figure 3 As shown, the module includes a wire guide bracket 15, an outer conduit 16, an inner conduit 17, a limiting block 18, and a limiting screw 19. The wire guide bracket 15 serves as the base of the entire wire guiding module, supporting all other components. The outer conduit 16 is a funnel-shaped stepped shaft long conduit with a long milled groove on its side, and the outer diameter of the stepped shaft is interference-fitted with the circular through hole of the wire guide bracket 15. The inner conduit 17 is a funnel-shaped conduit with a clearance fit between its overall outer diameter and the inner diameter of the outer conduit, and has a long milled groove on its side. The limiting block 18 is threadedly connected to the inner conduit above it. The limiting screw 19 is threadedly connected to the outer conduit above it. In use, manually moving the limiting block rotates the inner conduit, aligning its long milled groove with the long milled groove of the outer conduit, thus forming an opening in the wire guiding module. When the long milled grooves of the inner and outer conduits are misaligned, the wire guiding module achieves closed guidance.

[0064] Soldering module 5 Figure 4As shown, it includes a control cylinder 20, a solder dispensing base 21, a solder wire holder module 22, a solder pressing mechanism 23, and a solder guiding mechanism 24. In use, the control cylinder acts as a drive, causing the solder dispensing base 21 and the solder wire holder module 22 to move downwards as a whole. The purpose is to displace the tip of the solder dispensing tube 47 downwards to the melting position—that is, the position where the tip of the solder dispensing tube 47 contacts the tip of the soldering iron 11—and then return to the withdrawn position.

[0065] Solder wire frame module 22 Figure 5 As shown, the module includes a solder wire support 25, a solder wire support inner shaft 26, a shaft E-type retaining ring 27, a deep groove ball bearing 28, a bearing cap 29, a plastic sleeve 30, solder wire 31, and an M10 Phillips head countersunk screw 32. The solder wire support 25 serves as the base of the entire wire guiding module 4, supporting all other components. The solder wire support 25 has a circular through-hole on its side, allowing the deep groove ball bearing 28 and the solder wire support inner shaft 26 to pass through. The ball bearing is axially limited by the left bearing cap 29 and the right shaft E-type retaining ring 27. The inner diameter of the ball bearing transitions with the solder wire support inner shaft 26, while its outer diameter has a clearance fit with the through-hole of the solder wire support 25. The right end of the solder wire support inner shaft 26 has a diameter of 5, and the left end has a diameter of 12, allowing the right end of the inner shaft 26 to pass through the inner diameter of the ball bearing, while the left end transitions with the inner diameter of the plastic sleeve 30. The inner diameter of the plastic sleeve 30 is fitted with the left end of the supporting inner shaft 26, while its outer diameter is fitted with the solder wire 31 with a clearance, allowing the solder wire 31 to fit into the plastic sleeve 30 while maintaining a certain amount of friction between them. During use, when the solder wire 31 is pulled, it causes the plastic sleeve 30 to rotate, which in turn causes the supporting inner shaft 26 to rotate. The supporting inner shaft 26 then causes the ball bearing to rotate, resulting in smooth and unobstructed solder delivery of the solder wire 31.

[0066] Soldering mechanism 23 Figure 6As shown, the assembly includes a motor support plate 33, a motor 34, plastic roller 1 35, plastic roller 2 36, a sliding shaft 37, a rolling bearing 38, a sliding shaft base 39, and a sliding cover plate 40. The motor support plate 33 serves as the base for the entire soldering mechanism 23. The motor support plate 33 is an L-shaped thick stainless steel plate; one side of the L-shape is connected to the support plate of the entire device, while the other side of the L-shape acts as a frame, fixing all other parts of the motor soldering module to its front and rear. The motor 34 is mounted on the side with through holes and connected to plastic roller 1 35 via a motor shaft. Plastic roller 1 35 rotates under the drive of the motor 34, which in turn drives plastic roller 2 36, which is tangential to it, to rotate. Plastic roller 2 36 is fitted onto the sliding shaft 37, which has an inner diameter transition fit with the rolling bearing 38. The outer diameter of the rolling bearing 38 is embedded in a through hole of the same diameter on the sliding shaft base 39. The sliding shaft base 39 is positioned on the L-shaped stainless steel plate through straight slots, allowing for a 2mm lateral sliding space. The second plastic roller 36 is coaxial with the center hole of the sliding shaft base 39, also allowing for a 2mm lateral sliding space, thus enabling adjustment of the center distance between the first plastic roller 35 and the second plastic roller 36. This adjustment range allows for the passage of solder wires 31 of different diameters between the two rollers, improving the versatility of the solder dispensing mechanism. The sliding cover plate 40 is a rectangular cover plate that rests on the sliding shaft base 39 and the L-shaped thick stainless steel plate. The cover plate 40 has four straight slots at its four corners for engaging with the threaded screws of the sliding shaft base 39 and the motor support plate 33. The cover plate 40 has a long slot in its center, allowing the motor shaft and sliding shaft to pass through.

[0067] 24-element tin-conducting mechanism Figure 7As shown, this module includes a medium-precision rotary slide 41, a solder ejection base 42, a solder ejection shaft 43, an outer solder ejection joint 44, an inner solder ejection joint 45, an extension shaft 46, and a solder ejection tube 47. The medium-precision rotary slide 41 serves as the base of the entire solder guiding mechanism 24 and is connected to the large solder ejection base via four threads. The solder ejection shaft 43 is a deformed shaft with four planes cut along its X and Y axes, allowing it to be stably held in place by set screws. At the bottom end of the solder ejection shaft 43, there is an axial threaded hole, allowing its bottom to be threadedly connected and fixed to the outer solder ejection joint 44. The outer solder ejection joint 44 is a U-shaped component; its position is fixed by a threaded connection to the solder ejection shaft 43 in the Z direction, and it is connected to the inner solder ejection joint 45 in the X direction via a bolt and nut. When the bolt and nut connection is loose, the inner solder ejection joint 45 can rotate around the bolt to adjust the angle. After adjusting the angle, the bolt and nut can be tightened to fix the angle of the inner solder ejection joint 45. The inner joint 45 is used to connect to the outlet end of the solder tube 47 and control the angle of the outlet of the solder tube 47 so that it just contacts the tip of the soldering iron. In order to extend the adjustment stroke of the outlet end of the solder tube 47, an extension shaft 46 is connected to the bottom of the inner joint 45 via an axial thread to solve the problem that the outlet end of the solder tube 47 is too short and is prone to interference during adjustment.

[0068] The entire device works as follows: Cylinder 20 controls the solder dispensing module 5 to move downwards and to the left, while motor 7 controls the soldering iron module 3 to move downwards and to the right. When the tip of the solder dispensing tube 47 contacts the tip of the soldering iron 11, the solder wire melts for 3 seconds under the heat of the soldering iron. Then, cylinder 20 controls the solder dispensing module 5 to retract. Next, a wire is manually inserted through the opening slot of the wire guide module 4. The oscillating limit block 18 then closes the opening slot, locking the wire inside the guide tube until its tip contacts the tip of the soldering iron 11, and the wire comes into contact with the solder wire melted on the soldering iron tip. Finally, a robotic arm, via mounting flange 1, moves the large base 2, soldering iron module 3, wire guide module 4, and solder dispensing module 5 together to above the solder cup, then moves downwards by the depth of the solder cup, thus feeding the wire tip and the tip of the soldering iron 11 into the base of the solder cup for soldering. The robotic arm then controls the entire assembly to move upwards, removing the solder cup and returning to the zero position. Motor 7 also controls the soldering iron module 3 to retract, returning to its initial position. Manually moving the limiting block 18 of the wire guide module 3 causes the openings of the inner and outer conduits to overlap, allowing the wire to be withdrawn from the opening device.

[0069] The above-described embodiments are merely preferred embodiments of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. An automated soldering device for electrical connectors based on a robotic arm, characterized in that, This includes the robotic arm mounting flange, base, soldering iron module, wire guide module, and solder dispensing module; The robotic arm mounting flange is connected to the robotic arm; The base is a flat plate structure, with one end connected to the mounting flange of the robotic arm. The soldering iron module, wire guide module and solder dispensing module are fixed on the flat plate. The soldering iron module includes an electric soldering iron, a motor, a slide table and a cylinder adapter plate, an adapter slider, and a rotary slide table. The motor's lead screw drive shaft is embedded in the motor adapter slider, and the motor adapter slider and the rotary slide table are connected. The rotary slide table and the slide table are connected to the cylinder adapter plate. The slide table and the cylinder adapter plate are connected to the electric soldering iron. The solder dispensing module contains solder wire, which is led out and comes into contact with the tip of the soldering iron in the soldering iron module. The solder wire melts under the heating of the soldering iron. The wire guiding module is located between the soldering iron module and the solder dispensing module. It is equipped with an inner conduit containing wires. The inner conduit extends the wires, and the tip of the wires contacts the tip of the soldering iron in the soldering iron module. The wires also come into contact with the solder wire melted on the soldering iron tip.

2. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 1, characterized in that, The wire guiding module includes a wire guiding bracket, an outer conduit, an inner conduit, a limiting block, a limiting screw, and a wire; The wire guide bracket serves as the base of the entire wire guide module, supporting all other components. The outer conduit is a funnel-shaped stepped shaft conduit with milled grooves on the side, wherein the outer diameter of the stepped shaft is interference-fitted with the circular through hole of the wire guide bracket. The inner conduit is a funnel-shaped conduit with an integral outer diameter that is clearance-fitted to the inner diameter of the outer conduit, and has milled grooves on its side. The wire is inside the inner conduit. The limiting block is connected to the upper surface of the inner conduit, and the limiting screw is connected to the upper surface of the outer conduit.

3. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 1, characterized in that, The solder dispensing module includes a control cylinder, a solder dispensing base, a solder wire frame module, a solder pressing mechanism, and a solder guiding mechanism; The solder dispensing base is installed on the base, and the solder wire holder module, the solder pressing mechanism and the solder guiding mechanism are fixed on the solder dispensing base; The solder wire frame module is equipped with solder wire; The solder pressing mechanism is equipped with two plastic rollers, and the solder wire in the solder wire holder module passes between the two plastic rollers; The solder guiding mechanism guides the solder wire that passes through the solder pressing mechanism. The control cylinder controls the movement of the solder guiding mechanism so that the guide point contacts the tip of the soldering iron in the soldering iron module.

4. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 3, characterized in that, The solder wire holder module includes a solder wire support base, a solder wire support inner shaft, a shaft retainer, a deep groove ball bearing, a bearing cover, a plastic sleeve, and solder wire. The solder wire support seat has a circular through hole on its side, through which the deep groove ball bearing and the inner shaft of the solder wire support pass. The deep groove ball bearing is respectively connected to the bearing cap and shaft retaining ring. Its inner diameter is transitionally fitted with the inner shaft of the solder wire support, and its outer diameter is clearance fitted with the circular through hole of the solder wire support seat. One end of the solder wire support inner shaft passes through the inner diameter of the deep groove ball bearing, and the other end transitions into the inner diameter of the plastic sleeve. The outer diameter of the plastic sleeve is fitted with the solder wire with a clearance, so that the solder wire is inserted into the plastic sleeve.

5. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 3, characterized in that, The tin-pressing mechanism includes a motor support plate, a motor, plastic roller No. 1, plastic roller No. 2, a sliding shaft, a rolling bearing, a sliding shaft base, and a sliding cover plate; The motor support plate serves as the base of the entire tin-pressing mechanism. It is an L-shaped thick stainless steel plate, with one side of the L-shape connected to the base and the other side of the L-shape serving as a frame to fix the motor and sliding shaft base. The motor is connected to plastic roller No. 1 via a motor shaft; The first plastic roller and the second plastic roller are placed tangentially; The second plastic roller is fitted onto the sliding shaft. The second plastic roller is coaxial with the center hole of the sliding shaft base. The sliding shaft and the inner diameter of the rolling bearing are transitionally fitted. The outer diameter of the rolling bearing is embedded in a through hole of the same diameter on the sliding shaft base. Each corner of the sliding cover plate has a straight groove through hole, which is connected to the sliding shaft base and the motor support plate; the center of the sliding cover plate has a groove through which the motor shaft and the sliding shaft pass.

6. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 5, characterized in that, The motor support plate, which serves as the frame, has straight slot through holes on its surface. The sliding shaft base is connected to the motor support plate through the straight slot through holes. By moving the sliding shaft base, the center distance between plastic roller No. 1 and plastic roller No. 2 is adjusted so that solder wires of different diameters can pass between the two plastic rollers.

7. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 3, characterized in that, The solder guiding mechanism includes a rotary slide, a solder outlet base, a solder outlet shaft, an outer solder outlet joint, an inner solder outlet joint, and a solder outlet tube; The rotary slide serves as the base of the entire solder guiding mechanism and is connected to the base of the equipment. The solder ejection shaft is a deformed shaft with four planes cut in the XY direction of a cylindrical surface. The bottom end of the solder ejection shaft is provided with an axial threaded hole, which is connected and fixed to the solder ejection outer joint through the axial threaded hole. The outer solder outlet joint is a U-shaped component, which is fixedly connected to the solder outlet shaft in the Z direction and connected to the inner solder outlet joint in the X direction. The inner joint of the solder outlet connects to the outlet end of the solder outlet tube, controlling the angle of the outlet so that the outlet just contacts the tip of the soldering iron.

8. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 7, characterized in that, The outer joint of the solder outlet is connected to the inner joint of the solder outlet in the X direction by bolts and nuts. When the bolt and nut connection is loose, the inner joint of the solder outlet rotates around the bolt to adjust the angle. After the angle is adjusted, the bolt and nut are tightened to fix the angle of the inner joint of the solder outlet.

9. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 7, characterized in that, The solder guiding mechanism is also equipped with an extension shaft. One end of the extension shaft is axially threaded to the lower part of the solder outlet joint, and the other end is connected to the solder outlet tube, extending the adjustment stroke of the outlet end of the solder outlet tube.

10. The automated soldering equipment for electrical connectors based on a robotic arm according to claim 1, characterized in that, The soldering iron module includes a motor support plate, a motor, a motor adapter slider, a rotary slide, a slide-cylinder adapter plate, an electric soldering iron, an electric soldering iron pressure plate, a sensor guide rail, and a sensor. The motor support plate has an L-shaped structure and is mounted on the base, serving as the base of the entire soldering iron module to support all other components. The motor is fixed on the plane connecting the motor support plate and the base, and is connected to the motor adapter slider; the other plane of the motor support plate is connected to a parallel sensor guide rail, on which multiple sensors are installed from top to bottom. The upper surface of the motor adapter slider is provided with a circular through hole, and the lead screw drive shaft of the motor is embedded in the circular through hole; the side of the motor adapter slider is threadedly connected to the bottom surface of the rotary slide. The rotary slide and the bottom surface of the slide are threadedly connected to the cylinder adapter plate; The slide table and cylinder adapter plate are provided with a circular through hole, which is tightly fitted with the cylindrical outer diameter of the soldering iron. The soldering iron pressure plate presses against one side of the soldering iron and is threadedly connected to the slide table and cylinder adapter plate to press the soldering iron firmly.

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