An electronic component fine soldering device and soldering method

Abstract

The present invention discloses a fine soldering device for electronic components and a soldering method, which relates to the technical field of circuit board soldering. The fine soldering device for electronic components includes a soldering gun head and a wire feeding gun sleeve. A cleaning brush is sleeved on one side of the horizontal rotation path of the soldering gun head, and a paste filling brush is sleeved on one side of the horizontal rotation path of the wire feeding gun sleeve. A driving source drives the cleaning brush sleeve and the paste filling brush sleeve to move towards each other and approach the soldering gun head and the wire feeding gun sleeve, so as to perform rolling brush cleaning on the gun head of the soldering gun head and rolling brush paste filling on the wire solder head in the wire feeding gun sleeve. For the fine soldering device for electronic components, through the driving of the driving source, the combination of the cleaning brush sleeve and the paste filling brush sleeve is driven to extend, and they respectively lean towards the soldering gun head and the wire feeding gun sleeve and rotate along the soldering gun head and the wire feeding gun sleeve, so as to perform rolling brush cleaning on the soldering gun head and rolling brush paste filling on the wire solder head in the wire feeding gun sleeve, thereby solving the problem of relatively low soldering quality caused by the adhesion of impurities to the soldering gun head and insufficient solder paste in the wire after each soldering.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board soldering, and specifically to a fine soldering device and method for electronic components. Background Art

[0002] Soldering of electronic components is a core process in electronic manufacturing, used to solder resistors, capacitors, diodes, transistors, integrated circuits, high-power transistors, etc. onto a PCB board with solder. With the development of the soldering industry, traditional manual soldering processes for electronic components have gradually been replaced by mechanical soldering. Synchronously, the application of solder paste has gradually changed from manual application to self-application with built-in solder wire. By using a combination of a soldering gun and solder wire with built-in solder paste, rapid mechanical soldering of electronic components is achieved.

[0003] For example, in the Chinese patent with the publication number CN117086535A, an electronic component soldering device is disclosed. Such a device borrows the variable adjustment of the distance between a shielding member and a soldering gun, so that the distance between the soldering gun and the shielding member can be changed by shrinking and expanding, which can change the height of the solder joint at the soldering position, making the solder joint meet the usage requirements, improving the working efficiency and practicality of the soldering device, and also improving the production efficiency of electronic components.

[0004] However, when the existing soldering device solders electronic components, after each soldering, due to the adhesion of residual solder wire and the evaporation gas of the solder paste inside the solder wire on the soldering gun head, impurities are easily adhered to the soldering gun head. Moreover, when the solder wire melts at high temperature with the soldering gun, after each soldering, near the solder wire port close to the soldering area, the internal solder paste (rosin, flux) is prone to excessive melting and evaporation under the high temperature of the soldering gun, resulting in the solder wire often being unable to provide a sufficient amount of solder paste for the next soldering. Combining these two factors, it is easy to occur situations such as missed soldering, over-soldering, and spurs during the soldering of electronic components, and the refinement of soldering cannot be fully guaranteed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a fine soldering device and method for electronic components, which solves the problems raised in the background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: On the one hand, the present invention provides a fine soldering device for electronic components, including: a soldering gun head and a wire feeding gun sleeve, the soldering gun head and the wire feeding gun sleeve are arranged on the suspension in an angular form, and after a single soldering is completed, they move upward along the suspension and rotate reversely to a horizontal state; a cleaning brush sleeve, which is arranged on one side of the horizontal rotation path of the soldering gun head and is used to brush and clean the soldering gun head after horizontal rotation; a paste filling brush sleeve, which is arranged on one side of the horizontal rotation path of the wire feeding gun sleeve and is used to brush and fill the wire head in the wire feeding gun sleeve with paste after horizontal rotation; a driving source, which is arranged inside the suspension, and the driving source is used to drive the cleaning brush sleeve and the paste filling brush sleeve to move closer to the soldering gun head and the wire feeding gun sleeve in an opposite direction after the soldering gun head and the wire feeding gun sleeve rotate reversely to the horizontal state, so as to brush and clean the gun head of the soldering gun head and brush and fill the wire head in the wire feeding gun sleeve with paste.

[0007] Further, it also includes a negative pressure pipeline, which is built in the cleaning brush sleeve and supported by one group of pipe sleeves. Among them: the inner wall of the pipe sleeve has a track chute, one end of the track chute is provided with a first rotation chute, and the other end of the track chute is provided with a second rotation chute; a driving platform for supporting the cleaning brush sleeve is arranged inside the pipe sleeve, and the driving platform has a guiding sliding buckle, so that the guiding sliding buckle slides along the track chute into the second rotation chute or the first rotation chute respectively to rotate, driving the cleaning brush sleeve to brush and clean the soldering gun head or roll and self-clean relative to the negative pressure pipeline.

[0008] Further, it also includes a paste supply pipeline, which is built in the paste filling brush sleeve and supported by another group of pipe sleeves. Among them: a driving platform for supporting the paste filling brush sleeve is arranged inside the pipe sleeve, so that the guiding sliding buckle on the driving platform slides along the track chute into the second rotation chute or the first rotation chute respectively to rotate, driving the paste filling brush sleeve to brush and fill the wire head in the wire feeding gun sleeve with paste or roll and self-fill relative to the paste supply pipeline.

[0009] Further, a cleaning roller brush for cleaning the soldering gun head is arranged at one end of the barrel opening of the cleaning brush sleeve; one end of the negative pressure pipeline is provided with a cleaning pair brush that rolls relative to the cleaning roller brush, and a negative pressure discharge hole is arranged at one end of the negative pressure pipeline in a staggered manner with the cleaning pair brush, so that when the cleaning roller brush rotates relative to the cleaning pair brush, the impurities on the cleaning roller brush are cleaned and sucked into the negative pressure pipeline through the negative pressure discharge hole under negative pressure.

[0010] Further, a paste coating roller brush for coating the wire head in the paste filling brush sleeve with paste is arranged at one end of the barrel opening of the paste filling brush sleeve; one end of the paste supply pipeline is provided with a paste supply discharge hole for supplying paste to the paste coating roller brush, so that when the paste coating roller brush rotates relative to the paste supply discharge hole, the soldering paste is filled into the cavity of the paste coating roller brush.

[0011] Furthermore, the driving source includes two groups of rods symmetrically arranged inside the suspension, one end of the two groups of rods respectively has a sliding member, and the other end of the two groups of rods has an eccentric driving structure, which is used to drive the two groups of rods to generate reciprocating driving force to drive the two groups of sliding members to move back and forth respectively, wherein: the eccentric driving structure includes two groups of mating gears arranged in the middle of the suspension back plate, the two groups of mating gears are meshed with each other, and one side of the two groups of mating gears is meshed with output gears, and the central axes of the two groups of output gears are respectively provided with eccentric wheels connected to the rods, so that when the eccentric wheels rotate, the sliding members are driven to move back and forth through the rods.

[0012] Furthermore, the driving source also includes a hollow shaft provided on one side of the driving platform and a sliding sleeve axially sleeved along the hollow shaft. The sliding sleeve is fixedly connected to the sliding member, and a spiral driving end is provided between the sliding sleeve and the hollow shaft, so that the sliding sleeve cooperates with the hollow shaft and has a horizontal / rotational driving force to drive the guide slider to displace along the track slide groove and rotate along the first rotation slide groove and the second rotation slide groove, wherein: the spiral driving end includes a spiral slide groove opened along the axial direction of the hollow shaft and a driving slider fixed on the sliding sleeve, the driving slider is slidably adapted to the spiral slide groove, so that the translational drive of the driving slider pushes the hollow shaft to move and rotate.

[0013] Furthermore, a linkage mechanism is provided in the suspension for driving the welding gun head and the wire-extracting gun sleeve to lift and rotate in reverse, so that the welding gun head and the wire-extracting gun sleeve can make way for the displacement of the electronic components after a single welding is completed, and can rotate in reverse to approach the cleaning brush sleeve and the paste-filling brush sleeve for cleaning and paste-filling, wherein: the linkage mechanism includes: a lifting electric push rod, the lifting electric push rod is arranged in the middle of the front plate of the suspension, and the telescopic end of the lifting electric push rod has a lifting slide supporting the welding gun head and the wire-extracting gun sleeve; a first rotating shaft, the first rotating shaft is arranged on one side of the lifting slide, and one end of the first rotating shaft supports the welding gun head, and The other end of the first rotating shaft is provided with a first transmission gear, which is meshed and connected with the first transmission rack provided on the suspension, so that when the first transmission gear is meshed and transmitted along the first transmission rack, a thrust is generated to drive the welding gun head on the first rotating shaft to rotate; the second rotating shaft is provided on the other side of the lifting slide, one end of the second rotating shaft supports the wire drawing gun sleeve, and the other end of the second rotating shaft is provided with a second transmission gear, which is meshed and connected with the second transmission rack provided on the suspension, so that when the second transmission gear is meshed and transmitted along the second transmission rack, a thrust is generated to drive the wire drawing gun sleeve on the second rotating shaft to rotate.

[0014] Further, it further includes a soldering table mechanism for driving an electronic component to lean against a soldering gun head and a wire feeding gun sleeve for soldering. Among them: the soldering table mechanism includes: a soldering platform vertically arranged below the soldering gun head and the wire feeding gun sleeve for loading the electronic component for soldering; a Z-axis guide rail arranged below the soldering platform for driving the front and back driving of the soldering platform; an X-axis guide rail arranged below the Z-axis guide rail for driving the horizontal driving of the soldering platform on the Z-axis guide rail; a Y-axis guide rail, with two sets of Y-axis guide rails, which are laterally supported on both sides of the suspension for driving the lifting of the soldering gun head and the wire feeding gun sleeve on the suspension.

[0015] On the other hand, the present invention also provides a soldering method for a fine soldering device of an electronic component, including the following steps:

[0016] Step 1: After the soldering gun head and the wire feeding gun sleeve are soldered once, they rotate in the reverse direction to the horizontal state and are respectively horizontally aligned with the cleaning brush sleeve and the paste filling brush sleeve.

[0017] Step 2: The driving source drives the cleaning brush sleeve and the paste filling brush sleeve to extend towards each other and rotate, respectively performing rolling cleaning on the soldering gun head and rolling paste filling on the wire head in the wire feeding gun sleeve.

[0018] Step 3: The driving source drives the cleaning brush sleeve and the paste filling brush sleeve to contract in the reverse direction and rotate, respectively performing self-cleaning on the impurities on the rolling brush of the cleaning brush sleeve and self-paste filling on the cavity of the rolling brush of the paste filling brush sleeve.

[0019] The present invention has the following beneficial effects:

[0020] (1) For this fine soldering device of an electronic component, through the drive of the driving source, the combination of the cleaning brush sleeve and the paste filling brush sleeve is driven to extend, lean against the soldering gun head and the wire feeding gun sleeve respectively, and rotate along the soldering gun head and the wire feeding gun sleeve, performing rolling cleaning on the soldering gun head and rolling paste filling on the wire head in the wire feeding gun sleeve, solving the problem of relatively low soldering quality caused by the adhesion of impurities to the soldering gun head and insufficient solder paste in the wire after each soldering, and improving the soldering fineness from the source.

[0021] (2) For this fine soldering device of an electronic component, through the drive of the driving source, after performing rolling cleaning on the soldering gun head and rolling paste filling on the wire head in the wire feeding gun sleeve, the combination of the cleaning brush sleeve and the paste filling brush sleeve is driven to contract and reset, and lean against the negative pressure pipeline and the paste supply pipeline respectively to rotate, automatically cleaning the impurities in the cleaning brush sleeve and automatically paste filling the cavity in the paste filling brush sleeve, preparing for the next cleaning of the soldering gun head and paste filling of the wire, forming a dynamic cyclic linkage operation, and improving the fine soldering efficiency of the electronic component.

[0022] (3) The electronic component precision welding device drives the lifting and reverse rotation of the welding gun head and the wire gun sleeve combination through a linkage mechanism, so that the welding gun head and the wire gun sleeve provide space for the displacement of the electronic component after a single welding is completed, and at the same time rotate in the opposite direction to approach the cleaning brush sleeve and the paste brush sleeve to facilitate cleaning and paste filling, thereby improving the high standard of each welding of the electronic component and improving the welding quality.

[0023] (4) The electronic component precision welding device drives the welding platform to move in three directions relative to the welding gun head and the wire gun sleeve through the three-way drive of the welding table mechanism. At the end of a single soldering, it drives the next node of the electronic component to move, and uses the displacement gap to make the welding gun head and the wire gun sleeve keep giving way, self-cleaning / filling paste synchronously, forming an integrated linkage state, thereby improving welding efficiency.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of embodiment 1 of the present invention;

[0026] Figure 2 This is a structural diagram of Embodiment 1 of the present invention (rear view);

[0027] Figure 3 This is a schematic diagram of the first transmission of the welding gun head and the wire outlet gun sleeve in the first embodiment of the present invention;

[0028] Figure 4 This is a second transmission diagram of the welding gun head and the wire outlet gun sleeve in the first embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the transmission of two sets of variable mechanisms in embodiment 1 of the present invention;

[0030] Figure 6 Schematic diagram of the transmission of two sets of variable mechanisms in embodiment 1 of the present invention (rear view);

[0031] Figure 7 Schematic diagram of the structure of the variable mechanism in the first embodiment of the present invention;

[0032] Figure 8 This is a first cross-sectional view of the variable mechanism in Example 1 of the present invention;

[0033] Figure 9 This is a second cross-sectional view of the variable mechanism in the first embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the installation structure of the cleaning brush cover in the first embodiment of the present invention;

[0035] Figure 11Schematic diagram of the transmission of the cleaning brush sleeve in the first embodiment of the present invention;

[0036] Figure 12 Schematic diagram of the mating structure between the cleaning brush sleeve and the cleaning opposing brush in the first embodiment of the present invention;

[0037] Figure 13 Schematic diagram of the installation structure of the paste replenishing brush sleeve in the first embodiment of the present invention;

[0038] Figure 14 Schematic diagram of the transmission of the paste replenishing brush sleeve in the first embodiment of the present invention;

[0039] Figure 15 Schematic diagram of the mating structure between the paste replenishing brush sleeve and the paste supply holes in the first embodiment of the present invention;

[0040] Figure 16 Schematic diagram of the structure of the second embodiment of the present invention;

[0041] Figure 17 Schematic diagram of the transmission of the pneumatic drive mechanism in the second embodiment of the present invention;

[0042] Figure 18 Partial cross-sectional view of the pneumatic drive mechanism in the second embodiment of the present invention.

[0043] In the figure, 1, support platform; 2, X-axis guide rail; 3, Z-axis guide rail; 4, welding platform; 5, Y-axis guide rail; 6, suspension; 7, welding gun head; 8, wire outlet gun sleeve; 9, variable mechanism; 91, pipe sleeve; 92, sliding member; 93, axial groove; 94, sliding sleeve; 95, hollow shaft; 96, drive platform; 97, guiding sliding buckle; 98, first rotating chute; 99, track chute; 910, second rotating chute; 911, drive sliding buckle; 912, spiral chute; 10, cleaning brush sleeve; 101, cleaning roller brush; 11, paste replenishing brush sleeve; 111, paste applying roller brush; 12, drive motor; 13, lifting electric push rod; 14, lifting sliding table; 15, first rotating shaft; 16, second rotating shaft; 17, first transmission gear; 18, first transmission rack; 19, second transmission gear; 20, second transmission rack; 21, engaging gear; 22, output gear; 23, eccentric wheel; 24, rod; 25, negative pressure pipeline; 26, negative pressure discharge holes; 27, cleaning opposing brush; 28, paste supply pipeline; 29, paste supply holes; 30, drive electric push rod; 31, plunger rod; 32, three-way cylinder; 33, drive guide rod; 34, return spring; 35, pressure-bearing plunger; 36, piston. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0046] Next, according to Figures 1-18 Describe the electronic component fine soldering device and soldering method provided by the embodiments of the present invention.

[0047] On the one hand, the present invention provides an electronic component fine soldering device.

[0048] Embodiment 1: Please refer to Figures 1-2 , an electronic component fine soldering device provided by an embodiment of the present invention includes a soldering gun head 7 and a wire feeding gun sleeve 8. The soldering gun head 7 and the wire feeding gun sleeve 8 are arranged on the suspension 6 in an included angle form. It also includes a soldering table mechanism. The soldering table mechanism includes a soldering platform 4 vertically arranged below the soldering gun head 7 and the wire feeding gun sleeve 8, a Z-axis guide rail 3 arranged below the soldering platform 4, an X-axis guide rail 2 arranged below the Z-axis guide rail 3, and Y-axis guide rails 5 laterally supported on both sides of the suspension 6. The Y-axis guide rails 5 and the X-axis guide rail 2 are both installed on the support table 1. The suspension 6 can move up and down along the Y-axis guide rail 5. Specifically, a driving device, such as a motor screw or a cylinder, can be arranged at the top of the Y-axis guide rail 5 to drive the suspension 6 to move in the vertical direction, thereby pushing the soldering gun head 7 and the wire feeding gun sleeve 8 to move relative to the soldering platform 4 in the vertical direction. Similarly, the soldering platform 4 can be driven to move horizontally along the X-axis guide rail 2 or move back and forth along the Z-axis guide rail 3, so that the circuit board on the soldering platform 4 moves left and right and back and forth, and then the three-way movement of the relative movement of the combination of the circuit board, the soldering gun head 7 and the wire feeding gun sleeve 8 is realized, and the tin soldering process is carried out on the electronic components on the circuit board one by one.

[0049] Please refer to Figures 3-4, this embodiment also includes a linkage mechanism provided in the suspension 6 for driving the welding gun head 7 and the wire-extracting gun holster 8 to lift and rotate in reverse, wherein the linkage mechanism includes a lifting electric push rod 13 provided in the middle of the front plate of the suspension 6, a lifting slide 14 is fixedly provided at the telescopic end of the lifting electric push rod 13, and the welding gun head 7 and the wire-extracting gun holster 8 are installed on the lifting slide 14, a first rotating shaft 15 is rotatably installed on the lifting slide 14, the welding gun head 7 is fixedly mounted on one end of the first rotating shaft 15, and a first transmission gear 17 is fixedly provided at the other end of the first rotating shaft 15, the first transmission gear 17 is meshed with a first transmission rack 18 provided on the suspension 6, a second rotating shaft 16 is provided on the other side of the lifting slide 14, one end of the second rotating shaft 16 supports the wire-extracting gun holster 8, and the other end of the second rotating shaft 16 is provided with a second transmission gear 19, the second transmission gear 19 is connected to the second transmission rack 18 provided on the suspension 6 The rack 20 is meshed and connected. After the single soldering of the welding gun head 7 and the wire gun holster 8 is completed, the suspension 6 is controlled to move in the vertical direction, driving the suspension 6 to move upward, so that the welding gun head 7 and the wire gun holster 8 are combined to move upward to provide space for the next displacement welding of the electronic components. At the same time as the welding gun head 7 and the wire gun holster 8 are combined to move upward, the electric push rod 13 is started to drive the lifting slide 14 to move upward. Under the meshing transmission of the first transmission gear 17 and the first transmission rack 18, the first rotating shaft 15 is pushed to rotate, so that the welding gun head 7 moves up and makes way while rotating to be aligned with the cleaning brush cover 10 to clean the welding gun head 7. Synchronously, under the meshing transmission of the second transmission gear 19 and the second transmission rack 20, the second rotating shaft 16 is pushed to rotate, so that the wire gun holster 8 moves up and makes way while rotating to be aligned with the paste brush cover 11 to fill the welding gun head 7 with solder paste.

[0050] In this embodiment, the cleaning brush cover 10 is arranged on the side of the suspension 6 close to the welding gun head 7, and the paste filling brush cover 11 is arranged on the side of the suspension 6 close to the wire outlet gun cover 8. A driving source is provided inside the suspension 6 to drive the cleaning brush cover 10 and the paste filling brush cover 11 to move, so that the welding gun head 7 and the wire outlet gun cover 8 rotate in opposite directions to a horizontal state. The cleaning brush cover 10 and the paste filling brush cover 11 can be respectively leaned against the welding gun head 7 and the wire outlet gun cover 8, and rotate after contact to roll brush clean the welding gun head 7 and roll brush filling paste on the wire head in the wire outlet gun cover 8.

[0051] See also Figures 7-12, to achieve the cleaning of the welding gun head 7 and the self-cleaning of the cleaning brush sleeve 10, the cleaning brush sleeve 10 is internally provided with a negative pressure pipeline 25 and is supported by one of the pipe sleeves 91. Among them, the inner wall of the pipe sleeve 91 has an orbital chute 99. One end of the orbital chute 99 is provided with a first rotating chute 98, and the other end of the orbital chute 99 is provided with a second rotating chute 910. A driving platform 96 for supporting the cleaning brush sleeve 10 is arranged inside the pipe sleeve 91. The driving platform 96 has a guiding sliding buckle 97, so that the guiding sliding buckle 97 slides along the orbital chute 99 and rotates into the second rotating chute 910 or the first rotating chute 98 respectively. Based on the drive of the drive source, when cleaning the welding gun head 7, the guiding sliding buckle 97 is driven to translate along the orbital chute 99, and the cleaning brush sleeve 10 is pushed out through the driving platform 96 and sleeved around the gun head part of the welding gun head 7. At this time, the guiding sliding buckle 97 slides into the second rotating chute 910 and rotates (and when the final rotation stops, the guiding sliding buckle 97 is controlled to always be horizontally aligned with the orbital chute 99, so that the guiding sliding buckle 97 slides back along the orbital chute 99 and resets), and the cleaning brush sleeve 10 is pushed to rotate to perform rolling brush cleaning on the welding gun head 7.

[0052] In addition, a cleaning rolling brush 101 for cleaning the welding gun head 7 is arranged at one end of the barrel mouth of the cleaning brush sleeve 10. One end of the negative pressure pipeline 25 is provided with a cleaning opposing brush 27 opposite to the cleaning rolling brush 101, and a negative pressure discharge hole 26 is arranged at one end of the negative pressure pipeline 25 staggered with the cleaning opposing brush 27. After the rolling brush cleaning of the welding gun head 7, the guiding sliding buckle 97 is driven to move back along the orbital chute 99 in the reverse direction, so that the cleaning brush sleeve 10 contracts and resets. When the guiding sliding buckle 97 slides into the first rotating chute 98, the cleaning rolling brush 101 of the cleaning brush sleeve 10 is flush with the cleaning opposing brush 27. At this time, the guiding sliding buckle 97 rotates inside the first rotating chute 98 to push the cleaning brush sleeve 10 to rotate again, so that the cleaning rolling brush 101 rotates relative to the cleaning opposing brush 27. By using the relative rotation of the cleaning rolling brush 101 and the cleaning opposing brush 27, the impurities adhered to the cleaning rolling brush 101 are cleaned off. At the same time, by using the connection between the negative pressure device and the negative pressure pipeline 25, the cleaned impurities are sucked away through the negative pressure discharge hole 26 to complete the self-cleaning of the cleaning brush sleeve 10 and provide a clean cleaning environment for the next cleaning of the impurities on the welding gun head 7.

[0053] Please refer to Figures 7-10 , Figures 13-15, to achieve the paste filling of the welding wire head in the wire feeding gun sleeve 8 by the paste filling brush sleeve 11 and the self-paste filling of the solder paste in the paste filling brush sleeve 11, a paste supply pipeline 28 is arranged inside the paste filling brush sleeve 11 and supported by another set of pipe sleeves 91. Among them, a driving platform 96 for supporting the paste filling brush sleeve 11 is arranged in the pipe sleeve 91, so that the guiding sliding buckle 97 on the driving platform 96 slides along the track chute 99 into the second rotating chute 910 or the first rotating chute 98 respectively for rotation. Based on the drive of the drive source, when paste filling the welding wire head in the wire feeding gun sleeve 8, the guiding sliding buckle 97 is driven to translate along the track chute 99, and the paste filling brush sleeve 11 is pushed out through the driving platform 96 and sleeved on the welding wire part in the wire feeding gun sleeve 8. At this time, the guiding sliding buckle 97 slides into the second rotating chute 910 and rotates, pushing the paste filling brush sleeve 11 to rotate, and applying the solder paste to the welding wire head part in the wire feeding gun sleeve 8 to fill the welding wire with the solder paste to ensure the sufficiency of its next soldering assistance.

[0054] It should be noted that a paste applying roller brush 111 for applying paste to the welding wire head in the paste filling brush sleeve 11 is arranged at one end of the barrel mouth of the paste filling brush sleeve 11, and a paste supply discharge hole 29 for supplying paste to the paste applying roller brush 111 is arranged at one end of the paste supply pipeline 28. After paste filling the welding wire in the wire feeding gun sleeve 8, the guiding sliding buckle 97 is driven to move reversely and reset along the track chute 99, so that the paste filling brush sleeve 11 contracts and resets. When the guiding sliding buckle 97 slides into the first rotating chute 98, the paste applying roller brush 111 of the paste filling brush sleeve 11 is flush with the paste supply discharge hole 29. At this time, the guiding sliding buckle 97 rotates inside the first rotating chute 98, pushing the paste filling brush sleeve 11 to rotate again, so that the paste applying roller brush 111 rotates relative to the paste supply discharge hole 29. At the same time, by using the connection between the paste supply device and the paste supply pipeline 28, the solder paste is pumped out through the paste supply discharge hole 29, so that the cavity part of the paste applying roller brush 111 is filled with the solder paste to provide a paste filling environment for the next welding wire.

[0055] Please refer to Figures 5-9 , to achieve the linkage operation of the cleaning brush sleeve 10 and the paste filling brush sleeve 11, the drive source includes two groups of rods 24 symmetrically arranged inside the suspension 6. One end of each of the two groups of rods 24 has a sliding part 92, and the other end of each of the two groups of rods 24 has an eccentric drive structure. Based on the eccentric drive of the eccentric drive structure, its rotational driving force is converted into a horizontal driving force and transmitted to the sliding part 92 through the rod 24 to drive the sliding part 92 to reciprocate horizontally. Specifically:

[0056] The eccentric drive structure includes two sets of mating gears 21 provided in the middle of the back plate of the suspension 6. The two sets of mating gears 21 mesh with each other, and an output gear 22 is meshed on one side of each of the two sets of mating gears 21. Eccentric wheels 23 connected to the rod member 24 are provided on the central axes of the two output gears 22 respectively. By providing a drive motor 12 on the back plate of the suspension 6 to drive one of the sets of mating gears 21, controlling the drive motor 12 to work, driving the two sets of mating gears 21 to rotate symmetrically, and using the meshing transmission between the mating gears 21 and the output gears 22 to drive the eccentric wheels 23 to rotate. When the eccentric wheels 23 rotate, they pull the rod member 24 to reciprocate and deflect, converting the rotational thrust into a horizontal thrust and transmitting it to the sliding member 92. By previously opening an axial groove 93 on the sleeve 91, the sliding member 92 reciprocally slides along the axial groove 93, generating a reciprocating driving thrust to push the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 to be combined for telescopic / rotary drive.

[0057] As a further solution of this embodiment, the drive source further includes a hollow shaft 95 provided on one side of the drive table 96 and a sliding sleeve 94 sleeved around the hollow shaft 95 along the axial direction thereof. The sliding sleeve 94 is fixedly connected to the sliding member 92, and there is a spiral drive end between the sliding sleeve 94 and the hollow shaft 95, enabling the sliding sleeve 94 and the hollow shaft 95 to have horizontal / rotational driving forces, driving the guiding sliding buckle 97 to displace along the track chute 99 and rotate along the first rotary chute 98 and the second rotary chute 910. Based on the driving force of the sliding member 92, when the guiding sliding buckle 97 is within the track chute 99, it drives the sliding sleeve 94 to push the hollow shaft 95 for translational drive, enabling the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 to be combined for telescopic drive, and when the guiding sliding buckle 97 is within the first rotary chute 98 or the second rotary chute 910, it drives the sliding sleeve 94 to push the hollow shaft 95 for rotary drive, enabling the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 to be combined for rotary drive. Specifically:

[0058] The spiral drive end includes a spiral chute 912 axially opened on the hollow shaft 95 and a driving sliding buckle 911 fixedly provided on the sliding sleeve 94. The driving sliding buckle 911 is slidably adapted to the spiral chute 912. When the guiding sliding buckle 97 is within the track chute 99, its driving resistance is small. At this time, the driving frictional force between the driving sliding buckle 911 and the spiral chute 912 overcomes its driving resistance. When the sliding sleeve 94 moves, it pushes the hollow shaft 95 to move synchronously along the axis. And when the guiding sliding buckle 97 is within the first rotary chute 98 or the second rotary chute 910, its translational drive terminates. By using the driving sliding buckle 911 to slide along the track of the spiral chute 912, when the sliding sleeve 94 is driven translationally, it pushes the hollow shaft 95 to rotate. Then, by using the stepped translational and rotational drives of the hollow shaft 95, it pushes the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 to be combined for telescopic and rotary drives, completing the cleaning / paste replenishing of the welding gun head 7 and the welding wire in the wire feeding gun sleeve 8, as well as its own self-cleaning / self-paste replenishing work.

[0059] It should be noted that the combination of the sleeve 91, the sliding member 92, the axial groove 93, the sliding sleeve 94, the hollow shaft 95, the driving platform 96, the guiding sliding buckle 97, the first rotating chute 98, the track chute 99, the second rotating chute 910, the driving sliding buckle 911, and the spiral chute 912 together constitute the variable mechanism 9. By modularly assembling two sets of variable mechanisms 9, the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 are successively supported, enabling the combination of the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 to have the characteristics of linkage telescopic and rotational driving, so as to synchronously complete the cleaning of the welding gun head 7 and the paste replenishing of the welding wire in the wire feeding gun sleeve 8.

[0060] Embodiment 2: Please refer to Figures 15-18 , which is different from Embodiment 1 in that a driving electric push rod 30 is provided on the back plate of the suspension 6, and a pneumatic driving mechanism built in the suspension 6 is provided at the telescopic end of the driving electric push rod 30. The pneumatic driving mechanism is respectively connected to two sets of sliding members 92 for applying a reciprocating driving thrust to the sliding members 92, where:

[0061] The pneumatic driving mechanism includes a three-way column cylinder 32. One set of cylinders of the three-way column cylinder 32 is provided with a plunger rod 31 connected to the telescopic end of the driving electric push rod 30, and the other end of the plunger rod 31 is provided with a piston 36 built in the three-way column cylinder 32. The other two sets of cylinders of the three-way column cylinder 32 are symmetrically provided with two sets of driving guide rods 33. One end of the driving guide rod 33 is provided with a bearing plunger 35 built in the three-way column cylinder 32, and the other end of the driving guide rod 33 is connected to the sliding member 92. Based on the telescopic drive of the driving electric push rod 30, the piston 36 on the plunger rod 31 is pushed to telescopically drive along the three-way column cylinder 32, applying a compression / negative pressure to the gas in the three-way column cylinder ३२. The gas pressure is dispersed and transmitted to the two sets of bearing plungers 35, pushing the two sets of driving guide rods 33 to telescopically drive, realizing the reciprocating drive of the two sets of sliding members 92. As a pneumatic source, it drives the drive transmission of the combination of the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11 to complete the cleaning / paste replenishing of the welding gun head 7 and the welding wire in the wire feeding gun sleeve 8, as well as its own self-cleaning / paste replenishing work.

[0062] It should be noted that due to the non-contact pneumatic driving characteristic of the pneumatic driving mechanism, when an accidental collision, bump, or other hard impact occurs between the cleaning brush sleeve 10 and the welding gun head 7 or between the paste replenishing brush sleeve 11 and the wire feeding gun sleeve 8, the resistance caused by the collision is transmitted into the pneumatic driving mechanism, overcoming the gas pressure on the driving guide rod 33 and the bearing plunger 35, and transmitting the gas pressure in the three-way column cylinder 32 to the other set of driving guide rod 33 and bearing plunger 35. In a non-contact driving transmission manner, it plays a role of buffering and decompressing during the collision, avoiding mechanical damage caused by continuous contact driving after the collision.

[0063] In addition, a return spring 34 is provided on the driving guide rod 33. By utilizing the compressed return state of the return spring 34, it is beneficial for the telescopic return of the driving guide rod 33 and the pressure-bearing plunger 35, so that the combination of the driving guide rod 33 and the pressure-bearing plunger 35 can still maintain the initial reset state all the time even after uneven force transmission due to collision, and perform precise driving.

[0064] On the other hand, the present invention also provides a welding method for an electronic component fine welding device, comprising the following steps:

[0065] Step 1: After single-time welding, the welding gun head 7 and the wire feeding gun sleeve 8 rotate in the reverse direction to the horizontal state and are respectively horizontally aligned with the cleaning brush sleeve 10 and the paste filling brush sleeve 11.

[0066] Step 2: The driving source drives the cleaning brush sleeve 10 and the paste filling brush sleeve 11 to extend towards each other and rotate, and respectively performs roller cleaning on the welding gun head 7 and roller paste filling on the wire head in the wire feeding gun sleeve 8.

[0067] Step 3: The driving source drives the cleaning brush sleeve 10 and the paste filling brush sleeve 11 to contract in the reverse direction and rotate, and respectively performs self-cleaning on the impurities rolled by the cleaning brush sleeve 10 and self-paste filling on the cavity rolled by the paste filling brush sleeve 11.

Claims

1. An electronic component fine soldering device, characterized in that, Comprising: A welding gun head (7) and a wire feeding gun sleeve (8), the welding gun head (7) and the wire feeding gun sleeve (8) are arranged on a suspension (6) in an included angle form, and after a single soldering is completed, they move upward along the suspension (6) and rotate reversely to a horizontal state; A cleaning brush sleeve (10), the cleaning brush sleeve (10) is arranged on one side of the horizontal rotation path of the welding gun head (7) for rolling and cleaning the horizontally rotated welding gun head (7); A paste filling brush sleeve (11), the paste filling brush sleeve (11) is arranged on one side of the horizontal rotation path of the wire feeding gun sleeve (8) for rolling and filling solder paste on the wire head inside the horizontally rotated wire feeding gun sleeve (8); A driving source, the driving source is arranged inside the suspension (6), and after the welding gun head (7) and the wire feeding gun sleeve (8) rotate reversely to the horizontal state, the driving source is used to drive the cleaning brush sleeve (10) and the paste filling brush sleeve (11) to move towards each other and approach the welding gun head (7) and the wire feeding gun sleeve (8) to roll and clean the gun head of the welding gun head (7) and roll and fill solder paste on the wire head inside the wire feeding gun sleeve (8); It further includes a paste supply pipeline (28), the paste supply pipeline (28) is built inside the paste filling brush sleeve (11) and is supported by a group of pipe sleeves (91), wherein: A driving platform (96) for supporting the paste filling brush sleeve (11) is arranged inside the pipe sleeve (91), and the guiding sliding buckle (97) on the driving platform (96) slides along the track chute (99) into the second rotation chute (910) or the first rotation chute (98) respectively for rotation, driving the paste filling brush sleeve (11) to roll and fill solder paste on the wire head inside the wire feeding gun sleeve (8) or roll and self-fill solder paste relative to the paste supply pipeline (28); A paste applying rolling brush (111) for applying paste to the wire head inside the paste filling brush sleeve (11) is arranged at one end of the barrel mouth of the paste filling brush sleeve (11); One end of the paste supply pipeline (28) is provided with a paste supply discharge hole (29) for supplying paste to the paste applying rolling brush (111), so that when the paste applying rolling brush (111) rotates relative to the paste supply discharge hole (29), the soldering paste is filled into the cavity of the paste applying rolling brush (111).

2. The fine soldering device for electronic components according to claim 1, wherein: It further includes a negative pressure pipeline (25), the negative pressure pipeline (25) is built inside the cleaning brush sleeve (10) and is supported by another group of pipe sleeves (91), wherein: The inner wall of the pipe sleeve (91) has a track chute (99), one end of the track chute (99) is provided with a first rotation chute (98), and the other end of the track chute (99) is provided with a second rotation chute (910); A driving platform (96) for supporting the cleaning brush sleeve (10) is arranged inside the pipe sleeve (91), the driving platform (96) has a guiding sliding buckle (97), and the guiding sliding buckle (97) slides along the track chute (99) into the second rotation chute (910) or the first rotation chute (98) respectively for rotation, driving the cleaning brush sleeve (10) to roll and clean the welding gun head (7) or roll and self-clean relative to the negative pressure pipeline (25).

3. The fine soldering device for electronic components according to claim 2, characterized in that: A cleaning rolling brush (101) for cleaning the welding gun head (7) is arranged at one end of the barrel mouth of the cleaning brush sleeve (10); One end of the negative pressure pipeline (25) is provided with a cleaning pair of brushes (27) that are opposite to the cleaning roller brush (101), and one end of the negative pressure pipeline (25) is staggered with the cleaning pair of brushes (27) and provided with negative pressure discharge holes (26), so that when the cleaning roller brush (101) rotates relative to the cleaning pair of brushes (27), impurities on the cleaning roller brush (101) are cleaned and pumped into the negative pressure pipeline (25) through the negative pressure discharge holes (26) under negative pressure.

4. An electronic component fine soldering device according to any one of claims 1-3, characterized in that: The driving source comprises two groups of rods (24) symmetrically arranged inside the suspension (6), one end of each of the two groups of rods (24) comprises a sliding member (92), and the other end of each of the two groups of rods (24) comprises an eccentric driving structure for driving the two groups of rods (24) to generate a reciprocating driving force to drive the two groups of sliding members (92) to move back and forth, wherein: The eccentric drive structure includes two sets of mating gears (21) arranged in the middle of the back plate of the suspension (6), the two sets of mating gears (21) are meshed with each other, and one side of the two sets of mating gears (21) is meshed with an output gear (22), and the central axes of the two sets of output gears (22) are respectively provided with eccentric wheels (23) connected to the rod (24), and when the eccentric wheels (23) rotate, they drive the sliding member (92) to move back and forth through the rod (24).

5. An electronic component fine soldering device according to claim 4, characterized in that: The driving source further comprises a hollow shaft (95) provided on one side of the driving platform (96) and a sliding sleeve (94) axially sleeved along the hollow shaft (95), the sliding sleeve (94) being fixedly connected to the sliding member (92), and a spiral driving end being provided between the sliding sleeve (94) and the hollow shaft (95), the sliding sleeve (94) cooperating with the hollow shaft (95) to drive the guide slider (97) to move along the track chute (99) and to rotate along the first rotating chute (98) and the second rotating chute (910), wherein: The spiral driving end comprises a spiral chute (912) axially opened along the hollow shaft (95) and a driving slide buckle (911) fixed on the sliding sleeve (94), wherein the driving slide buckle (911) is slidably adapted to the spiral chute (912).

6. An electronic component fine soldering device according to claim 4, characterized in that: The suspension (6) is provided with a linkage mechanism for driving the welding gun head (7) and the wire gun sleeve (8) to lift and rotate in reverse, so that the welding gun head (7) and the wire gun sleeve (8) can provide space for the displacement of the electronic components after a single welding is completed, and can also rotate in reverse to approach the cleaning brush sleeve (10) and the paste brush sleeve (11) for cleaning and paste replenishing, wherein: The linkage mechanism comprises: A lifting electric push rod (13), wherein the lifting electric push rod (13) is arranged in the middle of the front plate of the suspension (6), and the telescopic end of the lifting electric push rod (13) has a lifting slide (14) supporting the welding gun head (7) and the wire gun sleeve (8); The first rotating shaft (15), the first rotating shaft (15) is arranged on one side of the lifting slide table (14), one end of the first rotating shaft (15) supports the welding gun head (7), and the other end of the first rotating shaft (15) is provided with a first transmission gear (17), the first transmission gear (17) is meshed and connected with a first transmission rack (18) arranged on the suspension (6), when the first transmission gear (17) meshes and drives along the first transmission rack (18), it can generate a thrust force to drive the welding gun head (7) on the first rotating shaft (15) to rotate by itself; The second rotating shaft (16), the second rotating shaft (16) is arranged on the other side of the lifting slide table (14), one end of the second rotating shaft (16) supports the wire feeding gun sleeve (8), and the other end of the second rotating shaft (16) is provided with a second transmission gear (19), the second transmission gear (19) is meshed and connected with a second transmission rack (20) arranged on the suspension (6), when the second transmission gear (19) meshes and drives along the second transmission rack (20), it can generate a thrust force to drive the wire feeding gun sleeve (8) on the second rotating shaft (16) to rotate by itself.

7. An electronic component fine soldering device according to claim 4, characterized in that, It further includes a welding table mechanism for driving the electronic component to lean against the welding gun head (7) and the wire feeding gun sleeve (8) for soldering, wherein: The welding table mechanism includes: The welding platform (4), the welding platform (4) is vertically arranged below the welding gun head (7) and the wire feeding gun sleeve (8) for loading the electronic component for soldering; The Z-axis guide rail (3), the Z-axis guide rail (3) is arranged below the welding platform (4) for driving the front and back driving of the welding platform (4); The X-axis guide rail (2), the X-axis guide rail (2) is arranged below the Z-axis guide rail (3) for driving the horizontal driving of the welding platform (4) on the Z-axis guide rail (3); The Y-axis guide rails (5), two sets of Y-axis guide rails (5) are provided and are laterally supported on both sides of the suspension (6) for driving the lifting of the welding gun head (7) and the wire feeding gun sleeve (8) on the suspension (6).

8. A method for fine soldering of electronic components, applicable to the fine soldering device for electronic components described in claim 1, characterized in that, It includes the following steps: Step 1: After the welding gun head (7) and the wire feeding gun sleeve (8) are welded once, they rotate in the reverse direction to the horizontal state and are horizontally aligned with the cleaning brush sleeve (10) and the paste filling brush sleeve (11) respectively; Step 2: The driving source drives the cleaning brush sleeve (10) and the paste filling brush sleeve (11) to extend towards each other and rotate, and respectively brush and clean the welding gun head (7) and brush and fill the wire head in the wire feeding gun sleeve (8) with paste; Step 3: The driving source drives the cleaning brush sleeve (10) and the paste filling brush sleeve (11) to contract in the reverse direction and rotate, and respectively self-clean the impurities brushed on the cleaning brush sleeve (10) and self-fill the cavity brushed on the paste filling brush sleeve (11) with paste.

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