High-compatibility double-laser solder ball precision welding device
The dual-laser solder ball precision welding device, which utilizes a stepper motor to drive the ball-distributing plate for precise positioning and a dual-station design, solves the problem of poor adaptability of traditional laser welding equipment to PCB board structures, achieving high compatibility and high-efficiency welding quality.
Patent Information
- Application Number
- CN202520444037.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Traditional laser welding equipment has poor adaptability to PCB board structure. PCB boards with pins are prone to laser path deviation, requiring frequent tooling adjustments. PCB boards without pins are also prone to displacement during welding. Single laser welding is prone to incomplete solder joints and porosity, resulting in low welding quality and efficiency.
A highly compatible dual-laser solder ball precision welding device is adopted, including a ball placement mechanism and first and second laser welding mechanisms. A stepper motor drives the ball distribution plate for precise positioning, and the first and second laser welding mechanisms are combined to achieve secondary welding. The dual-station design and moving module improve positioning accuracy and efficiency.
It improves compatibility with circuit boards with and without pins, soldering quality and efficiency, ensures soldering quality and reduces issues such as cold solder joints and porosity.
Smart Images
Figure CN223848258U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to laser precision welding equipment technical field, concretely relates to a high compatibility's double laser tin ball precision welding device. BACKGROUND
[0002] Flexible Printed Circuit Board (FPC) is widely used in the field of automotive electronics and other fields due to its lightweight, bendable and high-density wiring characteristics.
[0003] However, the conventional laser welding equipment has poor adaptability to the PCB structure, the PCB with PIN pins is prone to laser path deviation due to the pin obstruction, and the tooling needs to be frequently adjusted, which affects the efficiency; and the PCB without PIN pins is prone to displacement during welding due to the lack of fixing structure, at the same time, single laser welding is prone to problems such as virtual welding and porosity due to energy fluctuation or insufficient melting of tin balls, thereby unable to guarantee the welding quality and greatly reduce the welding efficiency. SUMMARY
[0004] The utility model discloses a high compatibility's double laser tin ball precision welding device, which overcomes the above technical deficiencies and solves the technical problems of low compatibility, poor welding quality and low welding efficiency in the field of laser precision welding equipment.
[0005] To achieve the above technical purpose, the technical scheme of the utility model provides a high compatibility's double laser tin ball precision welding device, which comprises
[0006] A ball placing mechanism, a first laser welding mechanism and a second laser welding mechanism; the ball placing mechanism comprises a ball separating main body, a ball separating disc, a tin ball blanking box, and a ball separating drive assembly; the ball separating main body is of a hollow structure; a first ball separating hole and a mounting hole are formed in the upper end of the ball separating main body; a ball placing hole is formed in the ball separating main body and extends through the upper and lower parts; the first ball separating hole, the mounting hole and the ball placing hole are all in communication with the inner cavity of the ball separating main body; the ball separating hole is in communication with the blanking hole of the tin ball blanking box through a ball separating pipe; the ball separating disc is coaxially arranged with the mounting hole; the ball separating disc is placed in the inner cavity of the ball separating main body; the ball separating disc is connected with the ball separating drive assembly through a rotating shaft; the ball separating drive assembly drives the ball separating disc to rotate around the rotating shaft by a set angle, so that the second ball separating hole on the ball separating disc is aligned with the ball placing hole, and the tin ball falls from the second ball separating hole to the ball placing hole.
[0007] Compared with the prior art, the utility model has the beneficial effects of:
[0008] 1. High compatibility: the double laser tin ball precision welding device provided by the utility model can weld circuit boards with PIN needles, and can also weld circuit boards without PIN needles, and the double laser tin ball precision welding device has strong compatibility.
[0009] 2. High welding quality: the double laser tin ball precision welding device provided by the utility model utilizes the first laser welding mechanism, the second laser welding mechanism and the ball placing mechanism to realize secondary laser welding, thereby improving the product welding quality.
[0010] 3. High welding efficiency: the double laser tin ball precision welding device provided by the utility model is provided with double stations by adopting the first moving module, the second moving module and the machine table, thereby greatly improving the welding efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 is a three-dimensional structure schematic view of the double laser tin ball precision welding device with high compatibility provided by the utility model;
[0012] Figure 2 is a three-dimensional structure schematic view of the ball placing mechanism provided by the utility model;
[0013] Figure 3 is a rear view structure schematic view of the ball placing mechanism provided by the utility model;
[0014] Figure 4 is a three-dimensional structure schematic view of the first moving module and the second moving module provided by the utility model;
[0015] Figure 5 is a three-dimensional structure schematic view of the ball separating disc provided by the utility model. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical scheme and advantages of the utility model more clear and understandable, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0017] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.
[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "including", "comprising", "having" and the like are specifically intended to be construed in an inclusive sense and not to the exclusion of any other items.
[0019] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The embodiment provides a high-compatibility double-laser tin ball precise welding device, which comprises a ball placing mechanism 1, a first laser welding mechanism 2, a second laser welding mechanism 3, a machine table 4, a machine table support 5 and a product conveying mechanism 6.
[0020] Further, the ball placing mechanism 1 comprises a ball distributing main body 11, a ball distributing disc 12, a tin ball blanking box and a ball distributing driving assembly 13.
[0021] Further, the ball distributing main body 11 is a hollow structure, and a first ball distributing hole 11A and a mounting hole 11B are formed in the upper end of the ball distributing main body 11. The ball distributing main body 11 is provided with a ball placing hole 11C penetrating through the upper and lower portions, and the first ball distributing hole 11A, the mounting hole 11B and the ball placing hole 11C are all in communication with the inner cavity of the ball distributing main body 11, and the first ball distributing hole 11A is in communication with the blanking hole of the tin ball blanking box (not shown) through a ball distributing pipe 111.
[0022] Further, the ball distributing pipe 111 is connected with an air source at the connection position with the ball distributing main body 11, the air source provides pressure to the ball distributing pipe 111, and the tin balls (not shown) in the ball distributing pipe 111 are discharged to the ball distributing disc 12 in the ball distributing main body 11 through the air pressure.
[0023] Further, the ball distributing disc 12 is coaxially arranged with the mounting hole 11B, the ball distributing disc 12 is arranged in the inner cavity of the ball distributing main body 11, the ball distributing disc 12 is connected with the ball distributing driving assembly 13 through a rotating shaft 14, the ball distributing driving assembly 13 drives the ball distributing disc 12 to rotate around the rotating shaft 14 by a set angle, so that the second ball distributing hole 12A on the ball distributing disc 12 is aligned with the ball placing hole 11C, and the tin balls fall from the second ball distributing hole 12A to the ball placing hole 11C.
[0024] Further, the ball separating driving assembly 13 comprises a driving source 131 and an angle controller 132, the driving source 131 drives the ball separating disc 12 to rotate a preset angle according to the instruction of the angle controller 132. Wherein, the driving source 131 drives the ball separating disc 12 to rotate a preset angle according to the instruction of the angle controller 132 is prior art, preferably, the driving source 131 is selected as a stepping motor, the advantages of the stepping motor in the embodiment are as follows: 1, open-loop control realizes accurate positioning: the stepping motor directly controls the angular displacement of the rotor by receiving pulse signals, without the need of a closed-loop feedback system to realize accurate control of the rotation angle of the ball separating disc; 2, subdivision driving improves accuracy: through the subdivision function of the driver, the stepping motor can realize micro-step control (such as 1 / 512 subdivision), which significantly improves the alignment accuracy of the second ball separating hole of the ball separating disc, the ball placing hole and the first ball separating hole, and reduces the phenomenon of tin ball jamming.
[0025] Further, the upper end of the ball placing hole 11C is fixedly connected with a guide column 15 in alignment, the guide column 15 is a hollow body, and the guide column 15 is in communication with the ball placing hole 11C in alignment. The guide column 15 is also communicated with an air source, and the lower end of the ball placing hole 11C is fixedly connected with a ball placing nozzle 16 in alignment.
[0026] Further, the ball separating body 11 is provided with a gas pressure sensing groove 11D penetrating through both sides, and an air pressure sensing unit (not shown) is arranged at the end of the gas pressure sensing groove 11D for detecting the air pressure of the ball placing nozzle 16.
[0027] Further, one side of the ball separating body 11 is fixedly connected with a first connecting plate 17, the first connecting plate 17 is fixedly connected with the output end of the first moving module 7 through a second connecting plate 18, the second connecting plate 18 is fixedly connected with the fixed end of the second moving module 8 on the side close to the ball separating body 11, the output end of the second moving module 8 is fixedly connected with the output end of the first laser welding mechanism 2, and the center of the output end of the first laser welding mechanism 2 is aligned with the center of the ball placing hole 11C.
[0028] Further, the second connecting plate 18 is fixedly connected with a second laser welding mechanism 3 on the side close to the ball separating body 11, and the second connecting plate 18 is fixedly connected with a visual camera 9 on the side away from the ball separating body 11.
[0029] Specifically, the first laser welding mechanism 2 mainly melts the tin ball (not shown), and the second laser welding mechanism 3 mainly completely welds the melted tin ball (not shown) on the product (not shown), thereby improving the welding quality.
[0030] Further, the upper end of the machine table 4 is provided with the machine table support 5 along the length direction, the upper end of the machine table support 5 is fixedly connected with the fixed end of the first moving module 7, the upper end of the machine table support 5 is provided with two first moving modules 7, and the two first moving modules 7 are fixedly connected with the ball placing mechanism 1, the first laser welding mechanism 2 and the second laser welding mechanism 3 to realize double-station production and improve the welding efficiency.
[0031] Further, the fixed end of the product conveying mechanism 6 is arranged at the upper end of the machine table 4 and below the ball placing mechanism 1, the lower end of the machine table 4 is provided with universal wheels 41 and adjustable supporting legs 42, the universal wheels 41 facilitate the movement of the equipment, and the adjustable supporting legs 42 facilitate the adjustment of the height and the horizontal degree of the equipment.
[0032] Further, the product conveying mechanism 6 can convey both the circuit board (not shown) with PIN needles and the circuit board (not shown) without PIN needles, that is, the double-laser tin ball precision welding device can weld both the circuit board with PIN needles and the circuit board without PIN needles, and the compatibility of the double-laser tin ball precision welding device is relatively strong.
[0033] Further, the first moving module 7 and the second moving module 8 both adopt the existing technology.
[0034] Further, preferably, the first moving module 7 is preferably a Cartesian robot, which is composed of X / Y / Z three-axis independent sliding tables and is driven by a ball screw or a synchronous belt, and the positioning accuracy can reach ±5um. At present, the structure is widely used in laser processing equipment, such as the positioning of the tin ball welding equipment of the equipment, and the advantages of the structure are modular design, intuitive motion trajectory and suitability for large-range space adjustment.
[0035] Further, the second moving module 8 belongs to a fine adjustment moving module and mainly adopts gear and rack technology, and the movement of the rack is realized by manually rotating the gear. Specifically, the second moving module adopts three groups of gears and racks to realize the movement in the X / Y / Z axial direction. The main function of the second moving module is to adjust the position of the output end of the first laser welding mechanism, so that the center of the output end of the first laser welding mechanism is always aligned with the center of the ball placing hole.
[0036] Further, in the drawings in the embodiment, the air sources entering the ball separating pipe and the ball separating body are all marked, but the arrows in the drawings in the embodiment all represent the entering direction of the air sources, and the air inlet of the air source has been indicated. Figure 2
[0037] Working principle: the high compatibility of the double laser tin ball precision welding device provided by the utility model includes ball separating main body 11, ball separating disc 12, tin ball blanking box, ball separating drive assembly 13. The ball separating main body 11 is of hollow structure, the upper end of the ball separating main body 11 is provided with first ball separating hole 11A and mounting hole 11B. The ball separating main body 11 is provided with ball placing hole 11C penetrating up and down, the first ball separating hole 11A, the mounting hole 11B and the ball placing hole 11C all communicate with the inner cavity of the ball separating main body 11, the first ball separating hole 11A communicates with the blanking hole of the tin ball blanking box through ball separating pipe 111. The ball separating disc 12 is coaxially arranged with the mounting hole 11B, the ball separating disc 12 is placed in the inner cavity of the ball separating main body 11, the ball separating disc 12 is connected with the ball separating drive assembly 13 through rotating shaft 14, the ball separating drive assembly 13 drives the ball separating disc 12 to rotate around the rotating shaft 14 by a set angle, so that the second ball separating hole 12A on the ball separating disc 12 is aligned with the ball placing hole 11C, and the tin ball falls from the second ball separating hole 12A to the ball placing hole 11C.
[0038] Specifically, first, when the product conveying mechanism 6 conveys the product to the machine table 4, the visual camera 9 captures the spatial position of the ball placing nozzle 16 and the solder pad in the product in real time through high-resolution imaging technology, generates three-dimensional coordinate system data, and feeds the data back to the first moving module 7. Through the work of the first moving module 7, the ball placing nozzle 16 is moved to the top of the solder pad in the product.
[0039] Secondly, under the action of air pressure, the tin balls in the tin ball blanking box move to the second ball separating hole 12A on the ball separating disc 12 through the ball separating pipe 111, the driving source 131 drives the rotating shaft 14 to rotate, thereby driving the ball separating disc 12 to rotate by a preset angle, so that the second ball separating hole 12A containing the tin balls is aligned with the ball placing hole 1C, so that the tin balls fall to the top end of the inner cavity of the ball placing nozzle 16. Since the guiding column 15 is internally communicated with gas, when the tin ball blocks the ball placing nozzle 16, the air pressure in the ball placing nozzle 16 and the guiding column 15 rapidly rises, the rising air pressure data is detected by the air pressure sensing unit and fed back to the control unit, and the control unit controls the first laser welding mechanism 2 to work in real time. The output end of the first laser welding mechanism 2 is opposite to the tin ball in the ball placing nozzle 16, the tin ball is melted, under the action of air pressure, the liquid tin ball is sprayed on the solder pad of the product, due to the difference of the product and the quality of the welding point, the second laser welding mechanism 3 is used to weld the welding point again.
[0040] Finally, the welding point position of the product is fed back to the first moving module 7 through the visual camera 9, the first moving module 7 drives the output end of the second laser welding mechanism 3 to be positioned directly above the product welding point, and the second laser welding mechanism 3 welds the welding point again, thereby improving the welding quality, wherein the second laser welding mechanism 3 is internally provided with a visual unit for detecting the quality of the final welding point, and if the quality is poor, information is fed back to the MES system for checking or screening by the staff, so as to ensure the quality of the shipped product.
[0041] The specific implementation manner of the utility model above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.
Claims
1. A high compatibility dual laser soldering device for soldering tin balls, characterized in that, The application relates to a ball placing mechanism, a first laser welding mechanism and a second laser welding mechanism. The ball placing mechanism comprises a ball distributing main body, a ball distributing disc, a tin ball feeding box, a ball distributing driving assembly, a first ball distributing hole, a mounting hole and a ball placing hole.
2. The high compatibility dual laser soldering device of claim 1, wherein, The upper end of the ball placing hole is fixedly connected with a guide column in alignment.
3. The high compatibility dual laser soldering device of claim 2, wherein, The guide column is a hollow body.
4. The high compatibility dual laser soldering device of claim 3, wherein, The guide column is also connected with an air source.
5. The high compatibility dual laser soldering device of claim 4, wherein, The lower end of the ball placing hole is fixedly connected with a ball placing nozzle in alignment.
6. The high compatibility dual laser soldering device of claim 5, wherein, The ball distributing main body is provided with a gas pressure sensing groove penetrating through two sides.
7. The high compatibility dual laser soldering device of claim 6, wherein, The end of the gas pressure sensing groove is provided with a gas pressure sensing unit for detecting the gas pressure of the ball placing nozzle. One side of the ball distributing main body is fixedly connected with a first connecting plate. The first connecting plate is fixedly connected with the output end of a second moving module through a second connecting plate. The side of the second connecting plate close to the ball distributing main body is fixedly connected with the fixed end of a second moving module. The output end of the second moving module is fixedly connected with the output end of the first laser welding mechanism. The output end center of the first laser welding mechanism is aligned with the center of the ball placing hole. The side of the second connecting plate away from the ball distributing main body is fixedly connected with a visual camera. The application further relates to a machine table, a machine table support and a product conveying mechanism. The upper end of the machine table is provided with the machine table support along the length direction. The upper end of the machine table support is fixedly connected with the fixed end of the first moving module. The upper end of the machine table support is provided with two first moving modules. The two first moving modules are fixedly connected with the ball placing mechanism, the first laser welding mechanism and the second laser welding mechanism, realizing double-station production. The fixed end of the conveying mechanism is arranged on the upper end of the machine table and is located below the ball placing mechanism. The lower end of the machine table is provided with universal wheels and adjustable supporting legs.