An automatic soldering device for enameled wire

Abstract

This invention belongs to the field of enameled wire soldering technology, and particularly relates to an automatic enameled wire soldering processing device, including a base and wire end holders, a solder feeding mechanism, and a heating mechanism, all mounted on the base. The wire end holder includes a base fixedly mounted on the upper side of the base, and side plates symmetrically distributed on the left and right sides are fixedly mounted on the base. Two irregularly shaped straightening blocks are rotatably mounted on the side plates via a rotating component. The four irregularly shaped straightening blocks are staggered front and back. This invention can effectively overcome the slight bending of the wire end caused by incomplete straightening in the early stage or the elastic recovery of the material, so that the front and rear wire ends are tightly attached to each other in a staggered state. At the same time, by the contact limit between the wire end and the inner side of the short side of the straightening block body, the overlap length of each set of ends is precisely controlled, and the overlap consistency between the three sets of ends is ensured, thereby significantly reducing the contact resistance difference of each phase circuit and improving the uniformity of the soldering strength.

Description

Technical Field

[0001] This invention belongs to the field of enameled wire soldering technology, and particularly relates to an automatic enameled wire soldering device. Background Technology

[0002] Currently, the connection between the coil and the three-phase power supply of a brushless motor is generally achieved using a welding process. In practice, the three enameled wires leading from the coil end are first inserted into pre-set insulating slots, and the three ends of the three-phase power supply lines are also placed in the corresponding slots, creating a stacked butt joint. A welding mechanism then fuses these jointed ends. This method is widely used in mass production due to its convenient slot positioning and simple operation.

[0003] However, the above welding method has significant shortcomings in practice. On the one hand, although the wire ends are straightened before being placed into the slot, there is still a certain distance between the worker's hand position and the contact point of the two ends when they are stacked together. Due to slight bending or elastic recovery, local gaps may still occur between them, resulting in insufficient contact. On the other hand, the welding quality is heavily dependent on manual operation. The overlap length of each set of ends often deviates too much or too little from the preset standard area, and the consistency of overlap among the three sets of ends is difficult to guarantee. This inconsistency directly affects the contact resistance and welding strength of each phase circuit.

[0004] Secondly, since the bottom of the slot forms a solid support for the lower side of the end, the molten solder is subject to gravity and surface tension during welding, and tends to spread preferentially on the upper side and the periphery of the end. The lower side is blocked by the slot and the heat conduction is uneven, resulting in a significantly less molten solder coverage than the upper side, forming a defect of asymmetrical coverage on the upper and lower sides.

[0005] The combined effect of these problems not only reduces the mechanical reliability and electrical stability of the welded joints, but also severely restricts the consistency of motor winding connection quality and the finished product qualification rate. Therefore, there is an urgent need for an automatic soldering device for enameled wire. Summary of the Invention

[0006] To address the aforementioned problems, the present invention provides an automatic soldering device for enameled wires, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: The present invention provides an automatic soldering device for enameled wire, including a base and a wire end holder, a solder feeding mechanism, and a heating mechanism, all mounted on the base. The wire end holder includes a base fixedly mounted on the upper side of the base. Side plates symmetrically distributed on the left and right sides are fixedly mounted on the base. Two irregularly shaped alignment blocks are rotatably mounted on the side plates via a rotating assembly, and the four irregularly shaped alignment blocks are staggered front to back. A limiting lifting frame is also provided in the upper middle part of the base. The limiting lifting frame is slidably mounted inside the base and has a first position where it sinks into the base and a second position where it extends upwards outwards from the upper side of the base. The heating mechanism is provided with a transmission assembly for driving the irregularly shaped alignment blocks to flip and reposition. The irregularly shaped alignment block includes an L-shaped alignment block body connected to the rotating assembly. The long side end of the alignment block body is set as a downward pressing arc surface. A guide block is fixedly mounted on the inner side of the short side and the inner side of the long side of the alignment block body. A symmetrically shaped side pressing arc surface is provided at the end of the guide block near the downward pressing arc surface. The wire ends inserted into the wire end holder correspond to the downward pressing arc surface and bend downward. The side pressing arc surface laterally limits and squeezes the wire ends, causing the front and rear wire ends to be misaligned and tightly attached to each other, and the ends of the wire ends abut against the inner side of the short side of the corresponding aligning block body.

[0008] After the transmission component drives the irregularly shaped straightening block to flip, the limiting lifting frame switches from the first position to the second position, lifting the wire end and separating it from the upper surface of the base. Multiple guide grooves are formed between the limiting lifting frame and the top of the base. The guide grooves are used to restrict the flow path of the solder when the solder melts, so that the solder is oriented to cover the surface of the wire end.

[0009] According to an advantageous embodiment, the side plate has three enameled wire slots and two rotating slots, with the rotating assembly disposed in the rotating slots.

[0010] According to an advantageous embodiment, the rotating assembly includes a rotating shaft rotatably disposed in a rotating groove, the rotating shaft being fixedly connected to the aligning block body via a connecting plate, a torsion spring being sleeved on one end of the rotating shaft, one end of the torsion spring being fixedly connected to the surface of the rotating shaft, and the other end of the torsion spring being fixedly connected to the inner sidewall of the rotating groove.

[0011] According to an advantageous embodiment, the base is provided with a sliding groove adapted to the limiting and lifting frame. The limiting and lifting frame includes a frame body slidably disposed in the sliding groove. Two partitions are provided in the frame body. The partitions, together with the inner wall of the corresponding frame body and the upper side of the base, form a corresponding guide groove. Multiple grooves adapted to the enameled wire are provided on both the left and right sides of the frame body. A left-right symmetrical lifting component is provided in the sliding groove.

[0012] According to an advantageous embodiment, the lifting assembly is configured as an electric actuator, the telescopic end of which is fixedly connected to the bottom of the frame.

[0013] According to an advantageous embodiment, the heating mechanism includes an L-shaped fixing frame fixedly mounted on a base, a cylinder fixedly mounted on the L-shaped fixing frame, and the telescopic end of the cylinder movably passing through the L-shaped fixing frame and fixedly connected to a heating seat.

[0014] According to an advantageous embodiment, the transmission assembly includes a U-shaped drive frame fixedly disposed on the left and right sides of the heating seat. The lower end of the U-shaped drive frame moves down with the heating seat and pushes the corresponding connecting plate to rotate around the corresponding rotating shaft, thereby causing the corresponding irregularly shaped swing block to flip. A slot is provided on the bottom inner wall of the rotating groove, and the slot is directly opposite to the end of the U-shaped drive frame and is adapted to the end.

[0015] According to an advantageous embodiment, a support rod is rotatably disposed within the rotating groove near the outer edge, and the support rod makes rolling contact with the corresponding long side of the U-shaped drive frame.

[0016] Compared with the prior art, the automatic soldering device for enameled wire provided in this embodiment of the invention has the following beneficial effects:

[0017] 1. In this invention, by setting irregularly shaped straightening blocks with downward and side-pressure arc surfaces, and using a staggered distribution, the enameled wire ends undergo forced straightening in two dimensions during insertion: "downward bending guidance" and "lateral limiting compression." This structure effectively overcomes the slight bending of the wire ends caused by incomplete straightening or material elastic recovery, ensuring that the front and rear wire ends are tightly attached to each other in a staggered state. Simultaneously, the contact and limiting action between the wire end and the inner side of the short side of the straightening block precisely controls the overlap length of each set of ends and ensures consistency among the three sets of ends. This significantly reduces the contact resistance differences between phase circuits and improves the uniformity of welding strength.

[0018] 2. In this invention, a sliding limit lifting frame is provided, and before welding, a lifting component is used to switch it from a first position to a second position, lifting the wire end to separate it from the upper surface of the base. This structure breaks through the obstruction of solder flow and heat conduction caused by the solid support at the bottom of the traditional slot. Combined with multiple independent guide channels formed between the limit lifting frame and the base, the molten solder, under the constraint of the guide channels, can overcome the disordered influence of gravity and surface tension, uniformly and directionally covering the upper, lower, and peripheral surfaces of the wire end. This fundamentally solves the "asymmetric" defect in traditional welding methods where solder preferentially spreads on the upper side while the lower side is insufficiently covered, significantly improving the mechanical connection strength and long-term conductive stability of the welded joint. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the external structure of the present invention;

[0020] Figure 2 for Figure 1Enlarged structural diagram of section A;

[0021] Figure 3 This is a schematic diagram showing the state in which the heating mechanism drives the irregularly shaped pendulum seat to flip.

[0022] Figure 4 This is a three-dimensional view of the external structure of the irregularly shaped upright seat after it has been flipped in this invention.

[0023] Figure 5 This is a side sectional plan view of the wire head holder in this invention;

[0024] Figure 6 This is a top view of the wire head holder in this invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the irregular-shaped alignment seat from the first perspective in this invention.

[0026] Figure 8 This is a two-dimensional structural diagram of the irregular-shaped alignment seat from the external second perspective in this invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the limiting lifting frame in this invention.

[0028] The attached diagram contains the following reference numerals: 1. Base; 2. Wire end holder; 21. Base; 211. Slide groove; 22. Side plate; 221. Slot; 222. Rotating groove; 223. Slot; 224. Support rod; 23. Rotating assembly; 231. Shaft; 232. Connecting plate; 233. Torsion spring; 24. Irregularly shaped straightening block; 241. Straightening block body; 242. Downward pressing arc surface; 243. Guide block; 244. Side pressing arc surface; 25. Limiting and lifting frame; 251. Frame; 252. Partition; 253. Groove; 254. Flow guide groove; 26. Lifting assembly; 3. Solder feeding mechanism; 4. Heating mechanism; 41. L-shaped fixing frame; 42. Cylinder; 43. Heating seat; 44. Transmission assembly; 441. U-shaped drive frame; 100. Enamelled wire; 200. Solder. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will now be described in further detail.

[0030] Please see Figure 1 and Figure 3 The present invention provides an automatic soldering device for enameled wire, comprising a base 1 and a wire end holder 2, a solder feeding mechanism 3, and a heating mechanism 4, all disposed on the base 1. The base 1 provides the overall mounting foundation for the automatic soldering device, the solder feeding mechanism 3 is used to deliver solder 200 to the soldering station, and the heating mechanism 4 is used to heat the soldering station to melt the solder 200.

[0031] The three enameled wires 100 of the motor coil are fixed to the enameled wires 100 of the external three-phase wires by the wire end holder 2, and then soldered by the solder feeding mechanism 3 and the heating mechanism 4.

[0032] It should be noted that the specific structure of the tin feeding mechanism 3 is common knowledge to those skilled in the art, and therefore is not described in detail in this solution.

[0033] Please see Figures 1-4 The wire end holder 2 includes a base 21 fixedly mounted on the upper side of the base 1. Side plates 22, symmetrically distributed on the left and right sides, are fixedly mounted on the base 21. The two side plates 22 and the base 21 together form a processing space for accommodating the wire ends of the enameled wire 100. Two irregularly shaped alignment blocks 24 are rotatably mounted on the side plates 22 via a rotating assembly 23. The four irregularly shaped alignment blocks 24 are staggered in the front and rear directions. Specifically, each side plate 22 has two irregularly shaped alignment blocks 24, and the irregularly shaped alignment blocks 24 on the front and rear side plates 22 are staggered in the front-rear direction, thereby allowing the inserted wire ends to be staggered.

[0034] Please see Figure 2 and Figure 4 The side plate 22 has three slots 221 for receiving enameled wires 100 and two rotating slots 222. The three slots 221 for receiving enameled wires 100 are spaced apart along the length of the side plate 22, corresponding to the three enameled wires 100 led out from the three-phase coil of the brushless motor. The rotating slots 222 are located on the side plate 22 at positions corresponding to the slots 221 for receiving enameled wires 100, and the rotating assembly 23 is disposed within the rotating slots 222.

[0035] Furthermore, the three enameled wire 100 slots 221 on the side plate 22 are slightly wider than the diameter of the enameled wire 100 to facilitate wire insertion. Simultaneously, the depth of the slots 221 is matched to the diameter of the enameled wire 100 to ensure a stable position after insertion. A guide chamfer is provided at the entrance of the enameled wire 100 slots 221 to guide the wire end into insertion smoothly.

[0036] Please see Figure 4 , Figure 7 and Figure 8The rotating assembly 23 includes a rotating shaft 231 rotatably disposed within a rotating groove 222. The rotating shaft 231 is fixedly connected to the centering block body 241 via a connecting plate 232. A torsion spring 233 is fitted onto one end of the rotating shaft 231; one end of the torsion spring 233 is fixedly connected to the surface of the rotating shaft 231, and the other end of the torsion spring 233 is fixedly connected to the inner wall of the rotating groove 222. The torsion spring 233 provides elastic restoring force when the irregularly shaped centering block 24 flips, enabling the irregularly shaped centering block 24 to automatically return to its initial position when not driven by external force. Furthermore, the pressure generated when the end of the enameled wire 100 contacts the irregularly shaped centering block 24 is negligible compared to the pressure of the torsion spring 233, ensuring that the irregularly shaped centering block 24 can generate sufficient limiting pressure on the end of the enameled wire 100.

[0037] Please see Figure 4 , Figure 7 and Figure 8 The irregularly shaped straightening block 24 includes an L-shaped straightening block body 241 connected to the rotating assembly 23. The straightening block body 241 has a long side and a short side. The end of the long side of the straightening block body 241 is positioned as a downward pressing arc surface 242. A guide block 243 is fixedly provided on the inner side of both the short side and the inner side of the long side of the straightening block body 241. A symmetrically arranged side pressing arc surface 244 is provided at one end of the guide block 243 near the downward pressing arc surface 242.

[0038] The downward pressing arc surface 242 is used to apply a downward force to the inserted enameled wire 100 end, causing the end to bend downward. The side pressing arc surface 244 is used to apply a lateral limiting and compressing force to the end, causing the front and rear ends to be misaligned in the lateral direction and pressed tightly against each other.

[0039] Specifically, when the enameled wire 100 ends are inserted into the wire end holder 2, the wire ends correspond to the downward pressing arc surface 242 and, guided by the downward pressing arc surface 242, adhere downward to the upper side of the base 21. Subsequently, the side pressing arc surface 244 performs lateral limiting compression on the wire ends, so that the two wire ends are misaligned but tightly adhered to each other, and the ends of the wire ends abut against the inner side of the short side of the corresponding alignment block body 241. Through the synergistic effect of the downward pressing arc surface 242 and the side pressing arc surface 244, the ends of the two enameled wires 100 can be corrected and tightly adhered together after docking, effectively eliminating the local gaps between the wire ends.

[0040] Please see Figure 4 and Figure 5 A limiting lifting frame 25 is also provided on the upper middle part of the base 21. The limiting lifting frame 25 is slidably disposed within the base 21 and has a first position that sinks into the interior of the base 21 and a second position that extends upwards from the upper side of the base 21. Specifically, a sliding groove 211 adapted to the limiting lifting frame 25 is provided on the base 21, and the limiting lifting frame 25 is slidably disposed within the sliding groove 211.

[0041] Please see Figures 4-6as well as Figure 9 The limiting and lifting frame 25 includes a frame body 251 slidably disposed within a slide groove 211, with two partitions 252 disposed within the frame body 251. Multiple grooves 253, adapted to the enameled wire 100, are provided on both the left and right sides of the frame body 251. When the limiting and lifting frame 25 is in the second position, the grooves 253 accommodate the wire ends of the enameled wire 100 and limit their movement. Symmetrical lifting components 26 are disposed within the slide groove 211, used to drive the limiting and lifting frame 25 to switch between the first and second positions. In this design, the lifting components 26 are electric actuators, with their telescopic ends fixedly connected to the bottom of the frame body 251. The lifting height of the limiting and lifting frame 25 is precisely controlled by the telescopic movement of the electric actuators.

[0042] Please see Figure 1 The heating mechanism 4 includes an L-shaped fixing frame 41 fixedly mounted on the base 1. The vertical section of the L-shaped fixing frame 41 is fixed to the base 1, and the horizontal section extends above the wire end holder 2. A cylinder 42 is fixedly mounted on the L-shaped fixing frame 41, and the telescopic end of the cylinder 42 moves through the horizontal section of the L-shaped fixing frame 41 and is fixedly connected to a heating seat 43. A heating head is provided at the lower end of the heating seat 43, which is used to move downward to the welding station under the drive of the cylinder 42 to heat and weld the wire end. The telescopic movement of the cylinder 42 precisely controls the lifting stroke of the heating seat 43.

[0043] It should be noted that, in addition to electric actuators, the aforementioned lifting assembly 26 can also employ other linear drive mechanisms such as lead screw and nut mechanisms, as long as it can achieve the reciprocating switching of the limit lifting frame 25 between the first and second positions. Those skilled in the art can select a suitable drive method according to actual needs.

[0044] Please see Figures 1-3 The heating mechanism 4 is equipped with a transmission assembly 44 for driving the irregularly shaped straightening block 24 to flip and move. The transmission assembly 44 includes a U-shaped drive frame 441 fixedly mounted on the left and right sides of the heating base 43. The contact position of the U-shaped drive frame 441 with the heating base 43 is far away from the heating head, ensuring that the U-shaped drive frame 441 is not heated. The two ends of the U-shaped drive frame 441 extend vertically downward, and their lower ends move down with the heating base 43 and push the corresponding connecting plate 232 to rotate around the corresponding rotating shaft 231, thereby driving the corresponding irregularly shaped straightening block 24 to flip.

[0045] Specifically, when the heating base 43 moves downward under the drive of the cylinder 42, the lower end of the U-shaped drive frame 441 moves downward synchronously, pushing the connecting plate 232 to rotate. The connecting plate 232 drives the rotating shaft 231 to rotate, thereby causing the irregularly shaped straightening block 24 to flip around the rotating shaft 231, thus achieving clearance. The bottom inner wall of the rotating groove 222 is provided with a slot 223, which is directly opposite to and adapted to the end of the U-shaped drive frame 441. When the end of the U-shaped drive frame 441 is inserted into the slot 223, the irregularly shaped straightening block 24 flips to the maximum clearance angle, and can follow the heating base 43 downward without continuing to drive the irregularly shaped straightening block 24 as the heating base 43 continues to move downward.

[0046] Please see Figures 1-3 A support rod 224 is rotatably mounted near the outer edge of the rotating groove 222. The support rod 224 makes rolling contact with the corresponding long side of the U-shaped drive frame 441. During the downward movement of the U-shaped drive frame 441, the support rod 224 provides rolling support for the U-shaped drive frame 441, preventing the U-shaped drive frame 441 from bending and deforming and reducing the friction between the U-shaped drive frame 441 and the inner wall of the rotating groove 222, making the transmission process smoother and more stable.

[0047] Working process and principle of the device

[0048] The working process of the device of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] In the initial state, the limiting lifting frame 25 is in the first position, which is sunk into the base 21, and the irregularly shaped straightening block 24 is in the initial position (i.e., not flipped) under the action of the torsion spring 233. The operator inserts the three enameled wires 100 from the end of the brushless motor coil and the three ends of the three-phase power line into the wire end holder 2 from the front and rear sides respectively.

[0050] During the insertion process, the inserted wire ends correspond to the downward pressing arc surface 242 and bend downwards. Specifically, the left wire end bends downwards under the guidance of the corresponding downward pressing arc surface 242, and the right wire end also bends downwards under the guidance of the corresponding downward pressing arc surface 242. Due to the staggered distribution of the four irregularly shaped alignment blocks 24, the front and rear wire ends are misaligned after insertion. Subsequently, the side pressing arc surface 244 laterally limits and squeezes the wire ends, so that the left and right wire ends are tightly attached to each other while being misaligned, and the ends of the wire ends respectively abut against the inner side of the short side of the corresponding alignment block body 241. Through the downward guidance of the downward pressing arc surface 242 and the lateral limiting and squeezing of the side pressing arc surface 244, the front and rear wire ends achieve precise positioning and tight fit in three-dimensional space, effectively eliminating local gaps caused by slight bending or elastic recovery of the wire ends.

[0051] After the wire end is positioned, the heating mechanism 4 is activated. Cylinder 42 drives the heating seat 43 to move downwards, and the heating seat 43 drives the U-shaped drive frame 441 to move downwards simultaneously. The end of the U-shaped drive frame 441 pushes the connecting plate 232 downwards, and the connecting plate 232 drives the rotating shaft 231 to rotate, thereby driving the irregularly shaped straightening block 24 to flip and make room. Then the heating seat 43 continues to move downwards until the heating head at the lower end of the heating seat 43 moves down to the welding station.

[0052] After the irregularly shaped straightening block 24 flips and repositions, the lifting assembly 26 is activated, driving the limiting lifting frame 25 to switch from the first position (sinking into the base 21) to the second position (extending upwards above the base 21). During the upward movement of the limiting lifting frame 25, the grooves 253 on the left and right sides of the frame 251 lift the wire end by 1-2 cm, separating the wire end from the upper surface of the base 21. After the limiting lifting frame 25 rises to the second position, the partition 252, together with the inner wall of the corresponding frame 251 and the upper side of the base 21, form multiple guide channels 254. The number of guide channels 254 corresponds to the number of enameled wires 100 (three in this scheme), and is used to independently melt and cover the ends of the three sets of wire ends with solder 200. The guide channels 254 are used to restrict the flow path of the solder when the solder 200 melts, so that the solder is oriented to cover the surface of the wire end.

[0053] In addition, it should be noted that both the surface of the limiting lifting frame 25 and the surface of the base 21 in this solution are coated with a solder resist layer to ensure that the solder 200 will not stick to the surface of the limiting lifting frame 25 and the surface of the base 21 after cooling.

[0054] Subsequently, the solder feeding mechanism 3 delivers solder 200 to the welding station, and the heating head of the heating seat 43 heats the end of the wire, melting the solder 200. Under the constraint of the guide groove 254, the flow path of the molten solder is precisely controlled, and the solder can evenly and directionally coat the upper, lower, and peripheral surfaces of the end of the wire, avoiding the asymmetrical solder coverage defect caused by the bottom of the slot 221 blocking in traditional welding methods. After welding is completed, the lifting component 26 drives the limiting lifting frame 25 to switch from the second position back to the first position, the cylinder 42 drives the heating seat 43 to rise and reset, and the irregularly shaped straightening block 24 flips and resets under the elastic restoring force of the torsion spring 233. The operator removes the welded wire end, completing one welding process.

[0055] In summary, through the synergistic effect of the downward pressing arc surface 242 and the side pressing arc surface 244 provided on the irregularly shaped straightening block 24, the inserted wire end can be pressed down and bent and laterally limited and squeezed, so that the front and rear wire ends are closely attached to each other while being misaligned, effectively eliminating the local gap between the wire ends, ensuring the tightness of the connection, and thus improving the mechanical reliability and electrical conductivity stability of the welded joint.

[0056] By moving relative to the base 21, the wire end is lifted and separated from the upper surface of the base 21 during welding, and a guide groove 254 is formed between the top of the limit lifting frame 25 and the base 21. This allows the molten solder to be oriented and uniformly coated on the upper, lower and peripheral surfaces of the wire end under the restriction of the guide groove 254. This effectively solves the defect of asymmetrical solder coverage caused by the bottom of the slot 221 blocking in the traditional welding method, and greatly improves the consistency of welding quality.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic soldering device for enameled wire, comprising a base and a wire end holder, a solder feeding mechanism, and a heating mechanism, all disposed on the base, characterized in that: The wire end holder includes a base fixedly mounted on the upper side of the base, and side plates symmetrically distributed on the left and right sides are fixedly mounted on the base. Two irregularly shaped straightening blocks are rotatably mounted on the side plates by a rotating component, and the four irregularly shaped straightening blocks are staggered front and back. The upper middle part of the base is also provided with a limiting lifting frame. The limiting lifting frame can be slidably disposed in the base and has a first position that sinks into the base and a second position that extends upward to the upper side of the base. The heating mechanism is equipped with a transmission component for driving the irregularly shaped pendulum block to flip and move. The irregularly shaped straightening block includes an L-shaped straightening block body connected to the rotating component. The long side end of the straightening block body is set as a downward pressing arc surface. A guide block is fixedly provided on the inner side of the short side and the inner side of the long side of the straightening block body. A symmetrical side pressing arc surface is provided at the end of the guide block near the downward pressing arc surface. The wire ends inserted into the wire end holder correspond to the downward pressing arc surface and bend downward. The side pressing arc surface laterally limits and squeezes the wire ends, causing the front and rear wire ends to be misaligned and tightly attached to each other, and the ends of the wire ends abut against the inner side of the short side of the corresponding aligning block body. After the transmission component drives the irregularly shaped straightening block to flip, the limiting lifting frame switches from the first position to the second position, lifting the wire end and separating it from the upper surface of the base. Multiple guide grooves are formed between the limiting lifting frame and the top of the base. The guide grooves are used to restrict the flow path of the solder when the solder melts, so that the solder is oriented to cover the surface of the wire end.

2. The automatic soldering device for enameled wire according to claim 1, characterized in that, The side plate has three enameled wire slots and two rotating slots, and the rotating assembly is set in the rotating slots.

3. The automatic soldering device for enameled wire according to claim 2, characterized in that, The rotating assembly includes a rotating shaft rotatably disposed in a rotating groove. The rotating shaft is fixedly connected to the aligning block body via a connecting plate. A torsion spring is sleeved on one end of the rotating shaft. One end of the torsion spring is fixedly connected to the surface of the rotating shaft, and the other end of the torsion spring is fixedly connected to the inner sidewall of the rotating groove.

4. The automatic soldering device for enameled wire according to claim 1, characterized in that, The base is provided with a sliding groove adapted to the limiting and lifting frame. The limiting and lifting frame includes a frame body that is slidably disposed in the sliding groove. Two partitions are provided in the frame body. The partitions, together with the inner wall of the corresponding frame body and the upper side of the base, form a corresponding guide groove. Multiple grooves adapted to the enameled wire are provided on both the left and right sides of the frame body. A left-right symmetrical lifting component is provided in the sliding groove.

5. The automatic soldering device for enameled wire according to claim 4, characterized in that, The lifting assembly is configured as an electric actuator, with the telescopic end of the electric actuator fixedly connected to the bottom of the frame.

6. The automatic soldering device for enameled wire according to claim 1, characterized in that, The heating mechanism includes an L-shaped fixing frame fixedly mounted on a base, a cylinder fixedly mounted on the L-shaped fixing frame, and the telescopic end of the cylinder movably passing through the L-shaped fixing frame and fixedly connected to a heating seat.

7. The automatic soldering device for enameled wire according to claim 1, characterized in that, The transmission assembly includes a U-shaped drive frame fixedly mounted on the left and right sides of the heating seat. The lower end of the U-shaped drive frame moves down with the heating seat and pushes the corresponding connecting plate to rotate around the corresponding rotating shaft, causing the corresponding irregularly shaped swing block to flip. The bottom inner wall of the rotating groove is provided with a slot, which is directly opposite to the end of the U-shaped drive frame and is adapted to the end.

8. The automatic soldering device for enameled wire according to claim 7, characterized in that, A support rod is rotatably installed near the outer edge of the rotating groove, and the support rod makes rolling contact with the corresponding long side of the U-shaped drive frame.

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