Electronic element fine welding device and welding method

Abstract

The invention discloses an electronic component fine welding device and a welding method, and relates to the technical field of circuit board welding. The electronic element fine welding device comprises a welding gun head and a wire outlet gun sleeve, a cleaning brush is arranged on one side of a horizontal rotating path of the welding gun head in a sleeving mode, a paste supplementing brush is arranged on one side of a horizontal rotating path of the wire outlet gun sleeve in a sleeving mode, and a driving source drives the cleaning brush sleeve and the paste supplementing brush sleeve to move oppositely to be close to the welding gun head and the wire outlet gun sleeve. And a gun head rolling brush of the welding gun head is cleaned, and a welding wire head rolling brush in the wire outlet gun sleeve is used for paste supplementing. According to the fine welding device for the electronic element, through driving of the driving source, the cleaning brush sleeve and the paste supplementing brush sleeve are driven to extend out in a combined mode, are close to the welding gun head and the wire outlet gun sleeve respectively and rotate along the welding gun head and the wire outlet gun sleeve, the welding gun head is cleaned in a rolling brushing mode, and a welding wire head in the wire outlet gun sleeve is subjected to paste supplementing in a rolling brushing mode; impurities adhere to a welding gun head, and soldering paste in a welding wire is insufficient, so that the welding quality is low.

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, which is used to solder resistors, capacitors, diodes, triodes, integrated circuits, high-power transistors, etc. onto a PCB board. With the development of the soldering industry, the traditional manual soldering process of electronic components has gradually been transformed into mechanical soldering. Synchronously, the application of solder paste has gradually changed from manual application to self-application with an in-built solder wire. By using a combination of a soldering gun and a solder wire with its own 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 residue of the solder wire and the adhesion of the evaporated gas of the solder paste inside the solder wire, 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, 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. Combined, this leads to situations such as missed soldering, over-soldering, and spiking in the soldering of electronic components, and the soldering fineness often 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 by 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 opposing angle 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, the cleaning brush sleeve is arranged on one side of the horizontal rotation path of the soldering gun head, and is used to roll-brush and clean the soldering gun head after horizontal rotation; a paste replenishing brush sleeve, the paste replenishing brush sleeve is arranged on one side of the horizontal rotation path of the wire feeding gun sleeve, and is used to roll-brush and replenish the solder wire head in the wire feeding gun sleeve after horizontal rotation; a driving source, the driving source is arranged inside the suspension, and the driving source is used to drive the cleaning brush sleeve and the paste replenishing brush sleeve to move closer to the soldering gun head and the wire feeding gun sleeve in an opposing direction after the soldering gun head and the wire feeding gun sleeve rotate reversely to the horizontal state, so as to roll-brush and clean the gun head of the soldering gun head and roll-brush and replenish the solder wire head in the wire feeding gun sleeve.

[0007] Further, it further includes a negative pressure pipeline, the negative pressure pipeline is built inside the cleaning brush sleeve and supported by one set of pipe sleeves, wherein: the inner wall of the pipe sleeve has an orbital chute, one end of the orbital chute is provided with a first rotating chute, and the other end of the orbital chute is provided with a second rotating chute; a driving platform for supporting the cleaning brush sleeve is arranged inside the pipe sleeve, the driving platform has a guiding sliding buckle, so that the guiding sliding buckle slides along the orbital chute to rotate in the second rotating chute or the first rotating chute respectively, and drives the cleaning brush sleeve to roll-brush and clean the soldering gun head or roll and clean itself relative to the negative pressure pipeline.

[0008] Further, it further includes a paste supply pipeline, the paste supply pipeline is built inside the paste replenishing brush sleeve and supported by another set of pipe sleeves, wherein: a driving platform for supporting the paste replenishing brush sleeve is arranged inside the pipe sleeve, so that the guiding sliding buckle on the driving platform slides along the orbital chute to rotate in the second rotating chute or the first rotating chute respectively, and drives the paste replenishing brush sleeve to roll-brush and replenish the solder wire head in the wire feeding gun sleeve or roll and replenish itself 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 counter brush that rolls against 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 counter brush, so that when the cleaning roller brush rotates relative to the cleaning counter brush, the impurities on the cleaning roller brush are cleaned and sucked into the negative pressure pipeline through the negative pressure discharge hole by negative pressure.

[0010] Further, a paste application roller brush for applying paste to the solder wire head in the paste replenishing brush sleeve is arranged at one end of the barrel opening of the paste replenishing brush sleeve; one end of the paste supply pipeline is provided with a paste supply discharge hole for supplying paste to the paste application roller brush, so that when the paste application roller brush rotates relative to the paste supply discharge hole, the solder paste is filled into the cavity of the paste application 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 back plate of the suspension, 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 arranged 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, driving 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 drives the hollow shaft to move and rotate.

[0013] Furthermore, a linkage mechanism is provided in the suspension to drive the welding gun head and the wire-extracting gun sleeve to lift and rotate in the opposite direction, so that the welding gun head and the wire-extracting gun sleeve can provide space for the displacement of the electronic components after a single welding is completed, and can respectively rotate in the opposite direction to approach the cleaning brush sleeve and the paste-filling brush sleeve for cleaning and paste-filling, wherein: the linkage mechanism comprises: 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, 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, 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, the second transmission gear 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] Furthermore, it also includes a welding table mechanism, which is used to drive the electronic components to approach the welding gun head and the wire outlet gun sleeve for soldering, wherein: the welding table mechanism includes: a welding platform, which is vertically arranged below the welding gun head and the wire outlet gun sleeve, and is used for soldering loading of electronic components; a Z-axis guide rail, which is arranged below the welding platform and is used to drive the front and rear drive of the welding platform; an X-axis guide rail, which is arranged below the Z-axis guide rail and is used to drive the horizontal drive of the welding platform on the Z-axis guide rail; and a Y-axis guide rail, which is arranged in two groups and is laterally supported on both sides of the suspension, and is used to drive the lifting and lowering drive of the welding gun head and the wire outlet gun sleeve on the suspension.

[0015] On the other hand, the present invention also provides a welding method of an electronic component fine welding device, comprising the following steps: Step 1: After a single welding, the welding gun head and the wire gun sleeve are rotated in the opposite direction to a horizontal state, and are horizontally aligned with the cleaning brush sleeve and the paste brush sleeve respectively; Step 2: The driving source drives the cleaning brush sleeve and the paste filling brush sleeve to extend and rotate in opposite directions, respectively cleaning the welding gun head with a roller brush and filling the paste with a roller brush on the welding wire head in the wire outlet gun sleeve; Step 3: The driving source drives the cleaning brush cover and the paste filling brush cover to shrink and rotate in opposite directions, so as to self-clean the impurities on the roller brush of the cleaning brush cover and self-fill the paste on the roller brush cavity of the paste filling brush cover.

[0016] The present invention has the following beneficial effects: (1) The electronic component fine welding device drives the combination of the cleaning brush sleeve and the paste filling brush sleeve to extend toward the welding gun head and the wire outlet gun sleeve respectively through the drive source, and rotates along the welding gun head and the wire outlet gun sleeve to clean the welding gun head with a rolling brush and fill the solder paste of the welding wire head in the wire outlet gun sleeve with a rolling brush, thereby solving the problem of poor welding quality caused by impurities adhering to the welding gun head and insufficient solder paste in the welding wire after each soldering, thereby improving the precision of welding from the source.

[0017] (2) The electronic component fine welding device, through the drive of a driving source, drives the combination of the cleaning brush sleeve and the paste filling brush sleeve to shrink and reset after the welding gun head is cleaned with a roller brush and the welding wire head in the wire outlet gun sleeve is filled with paste, and rotates toward the negative pressure pipeline and the paste supply pipeline respectively, automatically cleaning the impurities in the cleaning brush sleeve and automatically filling the paste in the cavity of the paste filling brush sleeve, preparing for the next welding gun head cleaning and welding wire filling, forming a dynamic cyclic linkage operation, and improving the fine welding efficiency of electronic components.

[0018] (3) The electronic component precision welding device drives the lifting and reverse rotation of the welding gun head and the wire outlet gun sleeve combination through a linkage mechanism, so that the welding gun head and the wire outlet gun sleeve provide space for the displacement of the electronic component after a single welding is completed, and simultaneously rotate in the reverse direction to approach the cleaning brush sleeve and the paste filling 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.

[0019] (4) The fine soldering device for electronic components drives the soldering platform to displace in three directions relative to the soldering gun head and the wire feeding gun sleeve through the three-way drive of the soldering table mechanism. At the end of a single soldering operation, it drives the displacement of the next node of the electronic component, and utilizes the displacement gap to enable the soldering gun head and the wire feeding gun sleeve to synchronously maintain a yielding state, self-cleaning / paste replenishment, forming an integrated linkage state, thereby improving the soldering efficiency.

[0020] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 It is a schematic structural diagram of Embodiment 1 of the present invention (rear view perspective); Figure 3 It is a first transmission schematic diagram of the soldering gun head and the wire feeding gun sleeve in Embodiment 1 of the present invention; Figure 4 It is a second transmission schematic diagram of the soldering gun head and the wire feeding gun sleeve in Embodiment 1 of the present invention; Figure 5 It is a transmission schematic diagram of two groups of variable mechanisms in Embodiment 1 of the present invention; Figure 6 It is a transmission schematic diagram of two groups of variable mechanisms in Embodiment 1 of the present invention (rear view perspective); Figure 7 It is a schematic structural diagram of the variable mechanism in Embodiment 1 of the present invention; Figure 8 It is a first cross-sectional view of the variable mechanism in Embodiment 1 of the present invention; Figure 9 It is a second cross-sectional view of the variable mechanism in Embodiment 1 of the present invention; Figure 10 It is a schematic installation structure diagram of the cleaning brush sleeve in Embodiment 1 of the present invention; Figure 11 It is a transmission schematic diagram of the cleaning brush sleeve in Embodiment 1 of the present invention; Figure 12 It is a schematic cooperation structure diagram of the cleaning brush sleeve and the cleaning opposing brush in Embodiment 1 of the present invention; Figure 13 It is a schematic installation structure diagram of the paste replenishment brush sleeve in Embodiment 1 of the present invention; Figure 14 It is a transmission schematic diagram of the paste replenishment brush sleeve in Embodiment 1 of the present invention; Figure 15 It is a schematic cooperation structure diagram of the paste replenishment brush sleeve and the paste supply discharge holes in Embodiment 1 of the present invention; Figure 16It is a schematic structural diagram of the second embodiment of the present invention; Figure 17 It is a transmission schematic diagram of the pneumatic drive mechanism in the second embodiment of the present invention; Figure 18 It is a partial cross-sectional view of the pneumatic drive mechanism in the second embodiment of the present invention.

[0022] 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 feeding 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, driving sliding buckle; 912, spiral chute; 10, cleaning brush sleeve; 101, cleaning roller brush; 11, paste filling 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 member; 25, negative pressure pipeline; 26, negative pressure discharge hole; 27, cleaning pair brush; 28, paste supply pipeline; 29, paste supply discharge hole; 30, driving electric push rod; 31, plunger rod; 32, three-way column cylinder; 33, driving guide rod; 34, return spring; 35, pressure-bearing plunger; 36, piston. Detailed implementation manners

[0023] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional 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 to the present invention.

[0025] Next, according to Figures 1 - 18 Describe the electronic component fine soldering device and soldering method provided by the embodiments of the present invention.

[0026] On the one hand, the present invention provides an electronic component fine soldering device.

[0027] Example 1: Please refer to Figures 1 - 2 , the embodiment of the present invention provides a fine soldering device for electronic components, including 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 further 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 set 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, back and forth, and then realizes 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, and performs the soldering process on each electronic component on the circuit board one by one.

[0028] Please refer to Figures 3 - 4, the present embodiment also includes a linkage mechanism arranged in the suspension 6 for driving the welding gun head 7 and the wire-extracting gun holster 8 to lift and rotate in the opposite direction in a linked manner, wherein the linkage mechanism includes a lifting electric push rod 13 arranged 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 installed at 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 and connected with a first transmission rack 18 arranged on the suspension 6, a second rotating shaft 16 is arranged 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 a second transmission gear 19 is provided at the other end of the second rotating shaft 16, the second transmission gear 19 is connected with the second transmission rack 18 arranged on the suspension 6 The rack 20 is meshed and connected. After a 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 up, so that the welding gun head 7 and the wire gun holster 8 are combined to move up, providing a clearance space for the next displacement welding of the electronic components, and while the welding gun head 7 and the wire gun holster 8 are combined to move up, the electric push rod 13 is started to drive the lifting slide 14 to move up, and 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 to make way and rotates 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 to make way and rotates to be aligned with the paste brush cover 11 to fill the welding gun head 7 with solder paste.

[0029] 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 the opposite direction to a horizontal state, and then the cleaning brush cover 10 and the paste filling brush cover 11 can be respectively close to the welding gun head 7 and the wire outlet gun cover 8, and rotate after contact, so as to roll brush clean the welding gun head 7 and roll brush fill paste on the welding wire head in the wire outlet gun cover 8 at the same time.

[0030] 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, a negative pressure pipeline 25 is built inside the cleaning brush sleeve 10 and 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 into the second rotating chute 910 or the first rotating chute 98 respectively for rotation. 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 for rotation (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 for reset), and the cleaning brush sleeve 10 is pushed to rotate to perform rolling brush cleaning on the welding gun head 7.

[0031] 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 counter brush 27 opposite to the rolling brush of 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 counter 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 counter brush 27. At this time, the guiding sliding buckle 97 rotates inside the first rotating chute 98, and the cleaning brush sleeve 10 is pushed to rotate again, so that the cleaning rolling brush 101 rotates relative to the cleaning counter brush 27. By using the relative rotation of the cleaning rolling brush 101 and the cleaning counter 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 impurities cleaned out are sucked away by negative pressure through the negative pressure discharge hole 26, completing the self-cleaning of the cleaning brush sleeve 10 and providing a clean cleaning environment for the next cleaning of the impurities on the welding gun head 7.

[0032] 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 built in 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 provided 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 add solder paste to the welding wire and ensure the sufficiency of its next soldering assistance.

[0033] 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 provided 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 provided 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, providing a paste filling environment for the next welding wire.

[0034] 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, driving the sliding part 92 to reciprocate horizontally. Specifically: 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 swing, 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 pipe sleeve 91, the sliding member 92 slides back and forth along the axial groove 93 to generate a reciprocating driving thrust, pushing the cleaning brush sleeve 10 and the paste filling brush sleeve 11 to be combined for telescopic / rotary drive.

[0035] 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. 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 in 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 filling brush sleeve 11 to be combined for telescopic drive, and when the guiding sliding buckle 97 is in 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 filling brush sleeve 11 to be combined for rotary drive. Specifically: 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 in the track chute 99, its driving resistance is small. At this time, the driving friction 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 in 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 drive of the hollow shaft 95, it pushes the cleaning brush sleeve 10 and the paste filling brush sleeve 11 to be combined for telescopic and rotary drive, completing the cleaning / paste filling 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 filling work.

[0036] 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 constitutes 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 supported in sequence, 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 work of the welding wire in the wire feeding gun sleeve 8.

[0037] 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 reciprocating driving thrust to the sliding members 92, where: 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 pressure-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 compression / negative pressure to the gas in the three-way column cylinder 32, and dispersing the gas pressure to the two sets of pressure-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 driving transmission of the combination of the cleaning brush sleeve 10 and the paste replenishing brush sleeve 11, and completes 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.

[0038] It should be noted that due to the non-contact pneumatic driving characteristics 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 received by the driving guide rod 33 and the pressure-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 pressure-bearing plunger 35, playing a role of buffering and decompressing during the collision in a non-contact driving transmission manner, and avoiding mechanical damage caused by continuous contact driving after the collision.

[0039] In addition, a return spring 34 is provided on the driving guide rod 33. By utilizing the compressed and reset state of the return spring 34, it is beneficial to the telescopic reset 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 at all times even after uneven force transmission due to collision, and perform precise driving.

[0040] On the other hand, the present invention also provides a welding method for an electronic component fine welding device, including 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 perform rolling cleaning on the welding gun head 7 and rolling paste filling on the wire head in the wire feeding gun sleeve 8; 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 perform self-cleaning on the impurities rolled on the cleaning brush sleeve 10 and self-paste filling on the cavity rolled on the paste filling brush sleeve 11.

Claims

1. An electronic component fine soldering device, characterized in that, Including: 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 replenishing brush sleeve (11), the paste replenishing brush sleeve (11) is arranged on one side of the horizontal rotation path of the wire feeding gun sleeve (8) for rolling and replenishing paste to the wire head in the horizontally rotated wire feeding gun sleeve (8); A driving source, the driving source is arranged inside the suspension (6), and the driving source is used to drive the cleaning brush sleeve (10) and the paste replenishing brush sleeve (11) to move towards each other and approach the welding gun head (7) and the wire feeding gun sleeve (8) after the welding gun head (7) and the wire feeding gun sleeve (8) rotate reversely to the horizontal state, so as to roll and clean the gun head of the welding gun head (7) and roll and replenish paste to the wire head in the wire feeding gun sleeve (8).

2. The electronic component fine soldering device according to claim 1, characterized in that: It further includes a negative pressure pipeline (25), the negative pressure pipeline (25) is built in the cleaning brush sleeve (10) and supported by one set of pipe sleeves (91), wherein: 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 rotation chute (98), and the other end of the orbital 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 orbital chute (99) into the second rotation chute (910) or the first rotation chute (98) respectively to rotate, 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 electronic component fine soldering device according to claim 2, characterized in that: It further includes a paste supply pipeline (28), the paste supply pipeline (28) is built in the paste replenishing brush sleeve (11) and supported by another set of pipe sleeves (91), wherein: A driving platform (96) for supporting the paste replenishing brush sleeve (11) is arranged inside the pipe sleeve (91), and the guiding sliding buckle (97) on the driving platform (96) slides along the orbital chute (99) into the second rotation chute (910) or the first rotation chute (98) respectively to rotate, driving the paste replenishing brush sleeve (11) to roll and replenish paste to the wire head in the wire feeding gun sleeve (8) or roll and self-replenish paste relative to the paste supply pipeline (28).

4. The electronic component fine soldering device according to claim 2, characterized in that: One end of the barrel opening of the cleaning brush sleeve (10) is provided with a cleaning roller brush (101) for cleaning the welding gun head (7); One end of the negative pressure pipeline (25) is provided with a cleaning counter brush (27) that rotates relatively to the cleaning roller brush (101), and a negative pressure discharge hole (26) is provided at one end of the negative pressure pipeline (25) staggered from the cleaning counter brush (27), so that when the cleaning roller brush (101) rotates relative to the cleaning counter brush (27), impurities on the cleaning roller brush (101) are cleaned and sucked into the negative pressure pipeline (25) through the negative pressure discharge hole (26) by negative pressure.

5. The electronic component fine soldering device according to claim 3, characterized in that: One end of the barrel opening of the paste replenishing brush sleeve (11) is provided with a paste applying roller brush (111) for applying paste to the wire head in the paste replenishing brush sleeve (11); One end of the paste supply pipeline (28) is provided with a paste supply hole (29) for supplying paste to the paste roller brush (111), so that when the paste roller brush (111) rotates relative to the paste supply hole (29), the solder paste fills the cavity of the paste roller brush (111).

6. The electronic component fine soldering device according to any one of claims 2-5, characterized in that: The driving source comprises two groups of rods (24) symmetrically arranged inside the suspension (6), one end of the two groups of rods (24) respectively having a sliding member (92), and the other end of the two groups of rods (24) having an eccentric driving structure, which is used to drive the two groups of rods (24) to generate a reciprocating driving force to drive the two groups of sliding members (92) to move reciprocatingly, wherein: The eccentric drive structure comprises 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) meshing with each other, and one side of the two sets of mating gears (21) meshing with an output gear (22), 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, the sliding member (92) is driven to reciprocate through the rod (24).

7. The electronic component fine soldering device according to claim 6, characterized in that: The driving source further comprises a hollow shaft (95) arranged on one side of the driving platform (96) and a sliding sleeve (94) axially sleeved along the hollow shaft (95); the sliding sleeve (94) is fixedly connected to the sliding member (92), and a spiral driving end is provided between the sliding sleeve (94) and the hollow shaft (95); the sliding sleeve (94) cooperates with the hollow shaft (95) to drive the guide sliding buckle (97) to move along the track slide groove (99) and to rotate along the first rotating slide groove (98) and the second rotating slide groove (910), wherein: The spiral driving end comprises a spiral sliding groove (912) opened axially along the hollow shaft (95) and a driving sliding buckle (911) fixedly arranged on the sliding sleeve (94), and the driving sliding buckle (911) is slidably matched with the spiral sliding groove (912).

8. The electronic component fine soldering device according to claim 6, characterized in that: The suspension (6) is provided with a linkage mechanism for driving the welding gun head (7) and the wire outlet gun sleeve (8) to move up and down in a linked manner and rotate in the opposite direction, so that the welding gun head (7) and the wire outlet gun sleeve (8) can provide space for the displacement of the electronic components after a single welding is completed, and can also rotate in the opposite direction to approach the cleaning brush sleeve (10) and the paste filling brush sleeve (11) for cleaning and paste filling, 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 a welding gun head (7) and a wire extraction gun holster (8); A first rotating shaft (15), wherein the first rotating shaft (15) is disposed on one side of the lifting slide (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) disposed on the suspension (6), and when the first transmission gear (17) is meshed and transmitted along the first transmission rack (18), a thrust force can be generated to drive the welding gun head (7) on the first rotating shaft (15) to rotate; A second rotating shaft (16) is provided 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 a second transmission gear (19) is provided at the other end of the second rotating shaft (16). The second transmission gear (19) is meshed and connected with a second transmission rack (20) provided on the suspension (6). When the second transmission gear (19) meshes and drives along the second transmission rack (20), a thrust can be generated to drive the wire feeding gun sleeve (8) on the second rotating shaft (16) to rotate by itself.

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

10. According to the fine soldering device for electronic components described in claim 1, it is characterized in that, Its soldering method includes the following steps: Step 1: After the soldering gun head (7) and the wire feeding gun sleeve (8) are soldered once, they 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). 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, respectively for rolling and cleaning the soldering gun head (7) and rolling and filling 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, respectively for self-cleaning the impurities rolled on the cleaning brush sleeve (10) and self-filling the cavity rolled on the paste filling brush sleeve (11) with paste.

Images