SMT laser processing device

Abstract

The invention provides an SMT laser machining device, and relates to the technical field of laser welding, the SMT laser machining device comprises a machining table, a conveying assembly is arranged on the side, close to a displacement mechanism, of the upper surface of the machining table, and the conveying assembly comprises a plurality of supporting bases which are evenly distributed and fixedly installed on the upper surface of the machining table in a rectangular shape; annular frames are fixedly connected to the upper portions of the opposite faces of the two supporting bases, extending plates are fixedly connected to the upper portions of the opposite faces of the two annular frames, and side rails are fixedly connected to the opposite faces of the two annular frames. The auxiliary frame connected with the surface of the conveying belt drives the telescopic rod to transport the PCB, the extension plate is erected, the length of the telescopic rod is changed, the telescopic rod can be clamped and released in the conveying and machining process, the PCB needing to be welded and machined can be conveyed and machined, clamping operation is carried out, and the welding efficiency of the PCB is improved. Therefore, while the welding processing efficiency of the PCB is improved, the precision of the processing process can be ensured.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and more specifically, to an SMT laser processing apparatus. Background Technology

[0002] In the precision manufacturing process of PoE power adapters, SMT laser soldering technology is often used to address the challenges of high-density integrated heat-sensitive components and ultra-fine pitch solder joints. This technology uses a high-energy-density laser beam as a heat source to achieve localized, non-contact precision heating of electronic component solder joints. By precisely controlling the laser power and application time, it can complete the rapid melting and solidification cooling of the solder within milliseconds. This superior process characteristic makes it particularly suitable for critical PCB assembly scenarios in PoE adapters, such as soldering ultra-fine pitch components, components that are themselves heat-sensitive, or have heat-sensitive components nearby, thereby significantly improving product reliability and quality.

[0003] In the SMT laser welding process of PCB boards, the PCB board needs to be placed on the processing table, and the stencil needs to be positioned on the PCB board according to the process requirements before laser welding. However, in current operations, single PCB boards are usually positioned and welded sequentially, lacking a continuous conveying mechanism, resulting in low overall welding efficiency. Furthermore, the lack of effective clamping and fixing of the PCB board during conveying also adversely affects the positioning accuracy of laser welding.

[0004] For example, the Chinese invention patent (application number: 202310724116.9) discloses "An SMT stepped stencil laser welding device," the description of which states: This invention relates to the technical field of laser welding, and in particular to an SMT stepped stencil laser welding device, which enables the laser welding gun to complete the welding of steel plates and thickened sheets with a shorter movement trajectory, improving welding efficiency, and is convenient and practical; it includes a support, a support plate, a multi-axis robotic arm, and a laser welding gun. The support plate is mounted on the upper end of the support, the multi-axis robotic arm is mounted on the support plate, and the laser welding gun is mounted on the multi-axis robotic arm, which is used to move the laser welding gun; it also includes a gripping mechanism, a clamping device, a platform, a cross slide, a sliding plate, and a support plate. The clamping device includes a magnetic adsorption device and an iron block, and the gripping mechanism is mounted on the support plate, and the gripping mechanism has a gripping function; the above patent can corroborate the defects of the prior art.

[0005] Therefore, we have made improvements to this and proposed an SMT laser processing device. Summary of the Invention

[0006] The purpose of this invention is to address the problems of low efficiency caused by the current method of sequential operation of single plates without a continuous conveying mechanism, and the lack of effective clamping during the conveying process, which affects the welding positioning accuracy.

[0007] To achieve the above-mentioned objectives, the present invention provides an SMT laser processing apparatus to improve the aforementioned problems.

[0008] The application is as follows:

[0009] An SMT laser processing device includes a processing table. A support frame is fixedly connected to the rear end of the upper surface of the processing table. A displacement mechanism is provided above the support frame, and a fixed frame is provided above the displacement mechanism. An auxiliary hinge is provided at the other end of the fixed frame, and a laser welding machine is fixedly connected to the other end of the auxiliary hinge. A conveying assembly is provided on the upper surface of the processing table near the displacement mechanism. The conveying assembly includes a plurality of support bases uniformly distributed and fixedly installed on the upper surface of the processing table in a rectangular shape. An annular frame is fixedly connected above the opposite surfaces of two sets of support bases. An extension plate is fixedly connected to each of the two annular frames. Side rails are fixedly connected to the opposite faces of each annular frame. Side grooves are opened at both ends of each annular frame. A rotating wheel is movably installed on the inner wall of the side groove. A conveyor belt is movably installed between the two rotating wheels on the same side. Several auxiliary frames are evenly fixedly connected to the outer wall of the conveyor belt. Telescopic rods are movably installed on the inner wall of each auxiliary frame. A positioning frame is provided on the side of the telescopic rod away from the auxiliary frame. A base plate is fixedly connected to the end of the positioning frame away from the telescopic rod. A side frame is fixedly connected to the end of the base plate away from the fixed plate. Two pulleys are movably installed symmetrically and evenly on one side of the side frame.

[0010] As a preferred technical solution of this application, two auxiliary plates are fixedly connected to the two annular frames in a symmetrical and uniform distribution on opposite sides. A rotating shaft is movably installed between the two auxiliary plates, and two rotating wheels on the same side are fixedly installed on the outer wall of the rotating shaft. A feeding assembly is provided between the two annular frames.

[0011] As a preferred technical solution of this application, one of the rotating shafts is fixedly connected to a drive motor through the auxiliary plate, and the drive motor is fixedly installed on one side of the adjacent auxiliary plate.

[0012] As a preferred technical solution of this application, a grooved rod is fixedly connected to one end of the telescopic rod near the side rail, the inner wall of the grooved rod is provided with a rubber clamp, and the other end of the telescopic rod is provided with a flipping component.

[0013] As a preferred technical solution of this application, the flipping assembly includes a roller fixedly installed at one end of the telescopic rod near the support base, a gear fixedly connected to the middle of the outer wall of the roller, and a toothed plate fixedly connected to one side of the upper surface of the annular frame, with the toothed plate meshing with the gear.

[0014] As a preferred technical solution of this application, a plurality of rollers on the same side are movably mounted with a limiting slide rail near the side of the annular frame, and the limiting slide rail is fixedly mounted on the outer surface of the annular frame, and the toothed plate is fixedly mounted on one side of the limiting slide rail below.

[0015] As a preferred technical solution of this application, the feeding assembly includes a lower frame plate fixedly installed on one side of the upper wall of the annular frame, a fixing plate fixedly connected to the opposite ends of the two lower frame plates, a trapezoidal frame fixedly connected between the two fixing plates, an upper frame fixedly connected to one side of the trapezoidal frame, two side curved plates movably installed on both sides of the upper frame, a torsion spring frame movably installed at the intersection of the two side curved plates, and the torsion spring frame fixedly installed on the upper surface of the trapezoidal frame, auxiliary balls movably installed on the opposite surfaces of the two side curved plates, a lower window plate is opened on one side of the upper surface of the trapezoidal frame, and a number of columnar balls are movably installed in a straight line evenly distributed between the inner sidewalls of the lower window plate.

[0016] As a preferred technical solution of this application, a side frame is fixedly connected to the upper frame, a right-angled frame plate is fixedly installed on the lower side of one side of the side frame, and the lower side of the right-angled frame plate is fixedly installed on the surface of the trapezoidal frame, and a discharge window is opened on the other side of the upper frame.

[0017] As a preferred technical solution of this application, a lower auxiliary rail is fixedly connected to the upper surface of the fixed plate, and the lower auxiliary rail is movably connected to the pulley. A magnetic plate is fixedly installed on the upper surface of the trapezoidal frame away from the upper frame.

[0018] As a preferred technical solution of this application, the auxiliary hinge has a shaft in the middle, one end of which is fixedly connected to a wheel, a conveyor belt is movably installed on the outer wall of the wheel, a conveyor wheel is movably installed on the other side of the conveyor belt, and a servo motor is fixedly connected to one end of the central shaft of the conveyor wheel through the fixed frame.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In the scheme of this application:

[0021] 1. To address the problems in existing technologies where single PCB boards are sequentially positioned and welded, lacking a continuous conveying mechanism, resulting in low overall welding efficiency, and where the lack of effective clamping and fixing of the PCB boards during conveying negatively impacts the positioning accuracy of laser welding, an auxiliary frame connected to the conveyor belt is used to drive a telescopic rod to transport the PCB boards. The extension plate alters the length of the telescopic rod, allowing it to clamp and release during the conveying process. This enables the conveying and clamping of the PCB boards to be welded, improving both the efficiency and accuracy of the PCB board welding process.

[0022] 2. By installing a limiting slide rail on the outer wall of the ring frame, which cooperates with the roller connected to one end of the telescopic rod, the PCB board clamping and conveying process is limited. A toothed plate is installed in the limiting slide rail, which cooperates with the gear on the outer wall of the roller to flip the PCB board that has completed single-sided processing. This allows the PCB board to be flipped during the conveying and processing process, and secondary reinforcement laser welding on the reverse side is performed to improve the welding quality of the PCB board.

[0023] 3. The telescopic rod driven by the conveyor belt, and the grooved rod connected to the telescopic rod, actuates the symmetrically distributed side curved plates, causing the torsion spring frame connected to them to retract, thereby squeezing the bottom PCB board and making it move towards the discharge window. After the conveyor belt drives the grooved rod of the telescopic rod to disengage from the side curved plates, the torsion spring frame loses its squeezing force and causes the side curved plates to reset, thus enabling the sequential feeding operation of the PCB boards to be welded, thereby improving the efficiency of PCB board laser welding.

[0024] 4. During the conveying process, the auxiliary frame on the outer wall of the conveyor belt drives the telescopic rod to move, causing the pulley to pass through the side rail at the extension plate, which in turn extends the telescopic rod and changes the distance between the two grooved rods to clamp the PCB board for clamping and conveying. During the flipping process, the roller at the other end of the telescopic rod moves within the limiting slide rail, causing the toothed plate on the outer wall of the roller to mesh with the toothed plate in the limiting slide rail, allowing the telescopic rod to flip the PCB board clamped by the grooved rod. During the loading process, the telescopic rod driven by the auxiliary frame of the conveyor belt pushes the side curved plate, squeezing the torsion spring frame in the symmetrically distributed side curved plate to contract, thereby squeezing the PCB board above the columnar ball for discharge. This allows for flexible switching between clamping and conveying functions, flipping functions, and extrusion discharge functions, thereby improving the efficiency of laser welding of PCB boards. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure of the SMT laser processing apparatus provided in this application;

[0026] Figure 2 A partial structural diagram of the SMT laser processing apparatus provided in this application. Figure 1 ;

[0027] Figure 3 The SMT laser processing apparatus provided in this application Figure 2 A side view diagram;

[0028] Figure 4 A partial structural diagram of the SMT laser processing apparatus provided in this application. Figure 2 ;

[0029] Figure 5Schematic diagram of the conveyor and flipping components in the SMT laser processing apparatus provided in this application Figure 1 ;

[0030] Figure 6 A partial structural diagram of the SMT laser processing apparatus provided in this application. Figure 3 ;

[0031] Figure 7 Schematic diagram of the feeding assembly in the SMT laser processing apparatus provided in this application Figure 1 ;

[0032] Figure 8 Schematic diagram of the feeding assembly in the SMT laser processing apparatus provided in this application Figure 2 ;

[0033] Figure 9 Schematic diagram of the conveyor and flipping components in the SMT laser processing apparatus provided in this application Figure 2 ;

[0034] Figure 10 Schematic diagram of the conveyor and flipping components in the SMT laser processing apparatus provided in this application Figure 3 .

[0035] The image shows:

[0036] 1. Processing table; 2. Support frame; 3. Displacement mechanism; 4. Fixing frame; 5. Auxiliary hinge; 6. Laser welding machine;

[0037] 7. Conveying assembly; 701. Support base; 702. Annular frame; 703. Drive motor; 704. Rotary shaft; 705. Rotary wheel; 706. Side trough; 707. Positioning frame; 708. Conveyor belt; 709. Telescopic rod; 710. Grooved rod; 711. Rubber clamp; 712. Side frame; 713. Pulley; 714. Base plate; 715. Side rail; 716. Extension plate; 717. Auxiliary plate; 718. Auxiliary frame;

[0038] 8. Flipping assembly; 801. Roller; 802. Gear; 803. Toothed plate; 804. Limiting slide rail;

[0039] 9. Feeding assembly; 901. Lower frame plate; 902. Fixing plate; 903. Lower auxiliary rail; 904. Trapezoidal frame; 905. Columnar ball bearings; 906. Upper frame; 907. Discharge window; 908. Side frame; 909. Right-angle frame plate; 910. Side curved plate; 911. Auxiliary ball bearings; 912. Magnet plate; 913. Lower window plate; 914. Torsion spring frame;

[0040] 10. Servo motor; 11. Transmission wheel; 12. Transmission belt; 13. Shaft wheel; 14. Shaft rod. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] As described in the background art, the use of single PCB boards for sequential positioning and welding lacks a continuous conveying mechanism, resulting in low overall welding efficiency. Furthermore, the lack of effective clamping and fixing of the PCB boards during the conveying process also adversely affects the positioning accuracy of laser welding.

[0043] To address this technical problem, the present invention provides an SMT laser processing device, which is applied in the field of laser welding technology.

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0045] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10An SMT laser processing device includes a processing table 1. A support frame 2 is fixedly connected to the rear end of the upper surface of the processing table 1. A displacement mechanism 3 is provided above the support frame 2. A fixed frame 4 is provided above the displacement mechanism 3. An auxiliary hinge 5 is provided at the other end of the fixed frame 4. A laser welding machine 6 is fixedly connected to the other end of the auxiliary hinge 5. A conveying assembly 7 is provided on the side of the upper surface of the processing table 1 near the displacement mechanism 3. The conveying assembly 7 includes a plurality of support bases 701 that are uniformly distributed in a rectangle and fixedly installed on the upper surface of the processing table 1. The plurality of support bases 701 are divided into two groups and distributed on the upper surface of the support bases 701. A ring frame 702 is fixedly connected above the opposite surfaces of the two groups of support bases 701. An extension plate 716 is fixedly connected to the upper part of the opposite surface, and the extension plate 716 is located in the upper middle part of the annular frame 702. Side rails 715 are fixedly connected to the opposite surfaces of the two annular frames 702. Side grooves 706 are opened at both ends of the annular frame 702. A rotating wheel 705 is movably installed on the inner wall of the side groove 706. A conveyor belt 708 is movably installed between two rotating wheels 705 on the same side. Several auxiliary frames 718 are evenly fixedly connected to the outer wall of the conveyor belt 708. A telescopic rod 709 is movably installed on the inner wall of the auxiliary frame 718. A positioning frame 707 is provided on the side of the telescopic rod 709 away from the auxiliary frame 718. A base plate 714 is fixedly connected to the end of the positioning frame 707 away from the telescopic rod 709. The base plate 714 is away from the fixed plate. A side frame 712 is fixedly connected to one end of 902. Two pulleys 713 are symmetrically and evenly distributed on one side of the side frame 712. The two pulleys 713 are movably installed at the upper and lower ends of the side rail 715. The start drive motor 703 drives the rotating shaft 704 to rotate, causing the two rotating wheels 705 to rotate accordingly. This drives the conveyor belt 708 to move on the outer wall of the annular frame 702. The auxiliary frame 718 drives the telescopic rod 709 to circulate on the outer wall of the annular frame 702. The extension plate 716, which is installed in the middle of the upper part of the annular frame 702, changes the path of the side rail 715. In conjunction with the pulleys 713 connected to the base plate 714 below the positioning frame 707, the telescopic rod 709 moves in a circular motion. 09 The extension plate 716 is stretched by the side rail 715, which drives the channel rod 710 to extend towards the middle of the two annular frames 702. The rubber clamp 711 on the inner wall of the channel rod 710 is clamped to the edge of the PCB board and transported to the vicinity of the laser welding machine 6 for laser welding. After the corresponding steel mesh is placed, the displacement mechanism 3 above the fixed frame 4 is used to adjust the horizontal and vertical position to change the displacement of the laser welding machine 6. At the same time, the servo motor 10 is started to rotate, and the transmission belt 12 drives the transmission wheel 11 to rotate. The shaft 14 connected to the transmission wheel 11 drives the auxiliary hinge 5 to rotate, thereby changing the tilt angle of the laser welding machine 6 to meet the requirements of welding the steel mesh.

[0048] The telescopic rod 709 is driven by the auxiliary frame 718 connected to the surface of the conveyor belt 708 to transport the PCB board. The extension plate 716 is installed to change the length of the telescopic rod 709, so that it can be clamped and released during the conveying and processing process. This allows the PCB board to be conveyed and processed for welding, and clamped, which can improve the efficiency of PCB board welding and processing while ensuring the accuracy of the processing.

[0049] Furthermore, such as Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, two ring-shaped frames 702 are symmetrically and evenly distributed on opposite sides and fixedly connected to two auxiliary plates 717. A rotating shaft 704 is movably installed between the two auxiliary plates 717. Two rotating wheels 705 on the same side are fixedly installed on the outer wall of the rotating shaft 704. A feeding assembly 9 is provided between the two ring-shaped frames 702. The two rotating shafts 704 are supported by the auxiliary plates 717 on both sides of the ring-shaped frames 702 to ensure the stability of the rotating shafts 704 during rotation.

[0050] Furthermore, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, one of the rotating shafts 704 passes through the auxiliary plate 717 and is fixedly connected to a drive motor 703. The drive motor 703 is fixedly installed on one side of the adjacent auxiliary plate 717. The drive motor 703 provides power for the rotation of the rotating shaft 704 to drive the PCB board to perform soldering operations.

[0051] Furthermore, such as Figure 2 , Figure 4 and Figure 5 As shown, a grooved rod 710 is fixedly connected to one end of the telescopic rod 709 near the side rail 715. A rubber clamp 711 is provided on the inner wall of the grooved rod 710. A flipping component 8 is provided at the other end of the telescopic rod 709. The PCB board is clamped by the grooved rod 710 connected to one end of the telescopic rod 709, and the rubber clamp 711 is used for protective clamping.

[0052] Example 2 further optimizes the SMT laser processing apparatus provided in Example 1, specifically, as follows: Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10As shown, the flipping assembly 8 includes a roller 801 fixedly installed on one end of the telescopic rod 709 near the support base 701. A gear 802 is fixedly connected to the middle of the outer wall of the roller 801. A toothed plate 803 is fixedly connected to one side of the upper surface of the annular frame 702. The toothed plate 803 and the gear 802 are meshed together. Two sets of conveyor belts 708 clamp and convey the PCB board with the symmetrically distributed telescopic rods 709, welding the steel mesh to one side of the PCB board. After completion, the conveyor belts 708 continue to move, which drives the telescopic rods 709 to... The outer wall of the ring frame 702 is constructed, and the roller 801 at the other end of the telescopic rod 709 slides in the limiting slide rail 804 to further limit the displacement of the telescopic rod 709. The gear 802 on the outer wall of the roller 801 moves to the toothed plate 803 in the limiting slide rail 804 and engages with the toothed plate 803. This causes the telescopic rod 709 to rotate in the auxiliary frame 718, thereby causing the PCB board to flip and reinforce the other side of the stencil pins in the PCB board to prevent cold solder joints.

[0053] By installing a limiting slide rail 804 on the outer wall of the annular frame 702, which cooperates with the roller 801 connected to one end of the telescopic rod 709, the PCB board clamping and conveying process is limited. A toothed plate 803 is installed in the limiting slide rail 804, which cooperates with the gear 802 on the outer wall of the roller 801 to flip the PCB board that has completed single-sided processing. This allows the PCB board to be flipped during the conveying and processing process, and secondary reinforcement laser welding on the reverse side can be performed to prevent the occurrence of cold solder joints and improve the quality of PCB board welding.

[0054] Furthermore, such as Figure 4 , Figure 5 and Figure 6 As shown, several rollers 801 on the same side are movably mounted with limiting slide rails 804 near the annular frame 702, and the limiting slide rails 804 are fixedly mounted on the outer surface of the annular frame 702. The toothed plate 803 is fixedly mounted on one side of the limiting slide rails 804 below. The movable connection between the limiting slide rails 804 and the rollers 801 limits the PCB board conveying process, ensuring the stability of the conveying process and preventing deviation during the conveying process.

[0055] Example 3 further optimizes the SMT laser processing apparatus provided in Examples 1 and 2, specifically, as follows: Figure 2 , Figure 4 , Figure 7 and Figure 8As shown, the feeding assembly 9 includes a lower frame plate 901 fixedly installed on one side of the upper wall inside the annular frame 702. A fixing plate 902 is fixedly connected to the opposite ends of the two lower frame plates 901. A trapezoidal frame 904 is fixedly connected between the two fixing plates 902. An upper frame 906 is fixedly connected to one side above the trapezoidal frame 904. Two side curved plates 910 are movably installed on both sides of the upper frame 906. A torsion spring frame 914 is movably installed at the intersection of the two side curved plates 910, and the torsion spring frame 914 is fixed. Installed on the upper surface of the trapezoidal frame 904, auxiliary balls 911 are movably mounted on the opposite surfaces of the two side curved plates 910. A lower window plate 913 is opened on one side of the upper surface of the trapezoidal frame 904. Several columnar balls 905 are movably mounted in a straight line evenly distributed between the inner sidewalls of the lower window plate 913. Before processing, the PCB boards to be processed are stacked in the side frame 908, with the bottommost PCB board in contact with the columnar balls 905 in the lower window plate 913. On the conveyor belt 7 After startup 08, the auxiliary frame 718 on the surface of the conveyor belt 708 drives the telescopic rod 709 to move from one side of the side frame 908. The groove rods 710 of the telescopic rods 709 on both sides then push the side curved plates 910 that intersect above the trapezoidal frame 904, squeezing the torsion spring frame 914 in the two side curved plates 910 to retract. The side curved plates 910 then pass through both sides of the upper frame 906, squeezing the PCB board above the columnar ball bearings 905 towards the discharge window 907 on one side of the upper frame 906. As the PCB moves and is discharged, the cylindrical ball bearings 905 roll to reduce friction. The telescopic rod 709 continues to move away from the trapezoidal frame 904, and the slot rod 710 disengages from the side curved plate 910. The torsion spring frame 914 between the two side curved plates 910 loses the squeezing power and unfolds. With the help of the auxiliary ball bearings 911, it quickly disengages from the upper frame 906. After disengagement, the stacked PCBs sink down and come into contact with the auxiliary ball bearings 911, thus starting the next round of PCB discharge operation.

[0056] The telescopic rod 709, driven by the conveyor belt 708, and the grooved rod 710 connected to the telescopic rod 709, actuates the symmetrically distributed side curved plates 910, causing the torsion spring frame 914 connected therein to retract. This compresses the bottom PCB board, pushing it towards the discharge window 907. After the conveyor belt 708 drives the grooved rod 710 of the telescopic rod 709 to disengage from the side curved plates 910, the torsion spring frame 914 loses its compressive force, causing the side curved plates 910 to reset. This allows for the sequential feeding of PCB boards to be welded, thereby improving the efficiency of PCB board laser welding.

[0057] Furthermore, such as Figure 4 , Figure 7 and Figure 8As shown, a side frame 908 is fixedly connected to the upper frame 906. A right-angle bracket plate 909 is fixedly installed on the lower side of one side of the side frame 908, and the right-angle bracket plate 909 is fixedly installed on the surface of the trapezoidal frame 904. The right-angle bracket plate 909 is used to position the side frame 908. A discharge window 907 is opened on the other side of the upper frame 906. The discharge window 907 is used to guide the unloaded PCB board, which is convenient for clamping operations.

[0058] Furthermore, such as Figure 7 and Figure 8 As shown, a lower auxiliary rail 903 is fixedly connected to the upper surface of the fixed plate 902. The lower auxiliary rail 903 is movably connected to the pulley 713. A magnetic plate 912 is fixedly installed on the upper surface of the trapezoidal frame 904 away from the upper frame 906. The magnetic plate 912 is used to attract the steel mesh placed on the upper surface of the PCB board to cooperate with laser welding and improve the accuracy of laser welding.

[0059] Furthermore, such as Figure 1 , Figure 2 and Figure 3 As shown, the auxiliary hinge 5 has a shaft 14 in the middle, and a wheel 13 is fixedly connected to one end of the shaft 14. A conveyor belt 12 is movably installed on the outer wall of the wheel 13, and a conveyor wheel 11 is movably installed on the other side of the conveyor belt 12. The central shaft of the conveyor wheel 11 passes through the fixed frame 4 and is fixedly connected to a servo motor 10. By starting the servo motor 10, the machine is driven to rotate, and the conveyor belt 12 drives the conveyor wheel 11 to rotate. The shaft 14 connected to the conveyor wheel 11 drives the auxiliary hinge 5 to rotate, thereby changing the tilt angle of the laser welding machine 6 and improving the convenience of laser welding.

[0060] The SMT laser processing device provided by this invention is used as follows:

[0061] Working principle: The staff places the overall structure in a suitable position, and stacks the PCB boards with the side to be welded with the steel mesh facing up.

[0062] Loading: The PCBs to be processed are stacked in the side frame 908, with the bottom PCB in contact with the cylindrical ball bearings 905 in the lower window plate 913. The drive motor 703 is started to drive the rotating shaft 704 to rotate, causing the two rotating wheels 705 to rotate as well. This causes the conveyor belt 708 to move on the outer wall of the annular frame 702, and the auxiliary frame 718 drives the telescopic rod 709. The auxiliary frame 718 on the surface of the conveyor belt 708 drives the telescopic rod 709 to move from one side of the side frame 908. The groove rods 710 of the telescopic rods 709 on both sides then actuate the side curved plates 910 that intersect above the trapezoidal frame 904, compressing the torsion springs in the two side curved plates 910. As the frame 914 retracts, the side curved plates 910 pass through both sides of the upper frame 906, squeezing the PCB board above the columnar balls 905 and moving it toward the discharge window 907 on one side of the upper frame 906 for discharge. The columnar balls 905 roll to reduce friction. The telescopic rod 709 continues to move away from the trapezoidal frame 904, and the slot rod 710 disengages from the side curved plates 910. The torsion spring frame 914 between the two side curved plates 910 loses its squeezing power and unfolds. With the help of the auxiliary balls 911, it quickly disengages from the upper frame 906. After disengagement, the stacked PCB boards sink down and come into contact with the auxiliary balls 911, thus starting the next round of PCB board discharge operation.

[0063] Clamping: Continue to start the drive motor 703 to drive the rotating shaft 704 to rotate, causing the two rotating wheels 705 to rotate accordingly. This drives the conveyor belt 708 to move along the outer wall of the annular frame 702, and the auxiliary frame 718 drives the telescopic rod 709 to circulate along the outer wall of the annular frame 702. The extension plate 716, which is installed in the middle of the upper part of the annular frame 702, changes the path of the side track 715. In conjunction with the pulley 713 connected to the base plate 714 below the positioning frame 707, the telescopic rod 709 passes through the extension plate 716. The side rail 715 near 6 is stretched, which drives the channel rod 710 to extend towards the middle of the two annular frames 702. The rubber clamp 711 on the inner wall of the channel rod 710 is clamped to the edge of the PCB board and transported to the vicinity of the laser welding machine 6 for laser welding operation. After placing the corresponding stencil, it is aligned with the hole opened on the PCB board, and solder paste is placed near the stencil. At this time, the PCB board has not yet left the trapezoidal frame 904, so that the stencil is attracted to the upper surface of the PCB board by the magnetic plate to cooperate with the laser welding operation.

[0064] Welding: The displacement mechanism 3 above the fixed frame 4 is then used to adjust the horizontal and vertical position to change the displacement of the laser welding machine 6. At the same time, the servo motor 10 is started to rotate, and the transmission belt 12 drives the transmission wheel 11 to rotate. The shaft 14 connected to the transmission wheel 11 drives the auxiliary hinge 5 to rotate, thereby changing the tilt angle of the laser welding machine 6 to meet the requirements of welding steel mesh.

[0065] Flipping: Two sets of conveyor belts 708 clamp and transport the PCB board with symmetrically distributed telescopic rods 709, welding the steel mesh to one side of the PCB board. After completion, the conveyor belts 708 continue to move, driving the telescopic rods 709 to move on the outer wall of the annular frame 702. The rollers 801 at the other end of the telescopic rods 709 slide in the limiting slide rail 804 to further limit the displacement of the telescopic rods 709. The gears 802 on the outer wall of the rollers 801 move to the toothed plate 803 in the limiting slide rail 804 and mesh with the toothed plate 803. Then, the telescopic rods 709 rotate in the auxiliary frame 718 to flip the PCB board, reinforcing the steel mesh pins on the other side of the PCB board with welding. After welding, the PCB board continues to be transported, separating from the two relatively distributed extension plates 716, causing the telescopic rods 709 to retract and drive the grooved rods 710 away from the PCB board, so that the PCB board is separated from the rubber clamps 711, completing the unloading operation of the PCB board after welding.

[0066] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. An SMT laser processing apparatus, comprising a processing table (1), wherein a support frame (2) is fixedly connected to the rear end of the upper surface of the processing table (1), a displacement mechanism (3) is provided above the support frame (2), a fixed frame (4) is provided above the displacement mechanism (3), an auxiliary hinge (5) is provided at the other end of the fixed frame (4), and a laser welding machine (6) is fixedly connected to the other end of the auxiliary hinge (5), characterized in that, The upper surface of the processing table (1) is provided with a conveying assembly (7) near the displacement mechanism (3). The conveying assembly (7) includes several support bases (701) that are uniformly distributed and fixedly installed on the upper surface of the processing table (1) in a rectangular shape. A ring frame (702) is fixedly connected above the opposite face of the two sets of support bases (701). An extension plate (716) is fixedly connected above the opposite face of the two ring frames (702). A side rail (715) is fixedly connected to the opposite face of the two ring frames (702). Side grooves (706) are opened at both ends of the ring frame (702). A rotating wheel (705) is movably installed on the inner wall of the side groove (706). A conveyor belt (708) is movably installed between the two rotating wheels (705) on the same side. Several auxiliary frames (718) are uniformly fixedly connected to the outer wall of the conveyor belt (708). A telescopic rod (709) is movably installed on the inner wall of the auxiliary frame (718).

2. The SMT laser processing apparatus according to claim 1, characterized in that, Two auxiliary plates (717) are fixedly connected to each other symmetrically and evenly on opposite sides of the two ring frames (702). A rotating shaft (704) is movably installed between the two auxiliary plates (717) and the two rotating wheels (705) on the same side are fixedly installed on the outer wall of the rotating shaft (704). A feeding assembly (9) is provided between the two ring frames (702).

3. The SMT laser processing apparatus according to claim 2, characterized in that, One of the rotating shafts (704) passes through the auxiliary plate (717) and is fixedly connected to a drive motor (703), which is fixedly installed on one side of the adjacent auxiliary plate (717).

4. The SMT laser processing apparatus according to claim 3, characterized in that, The telescopic rod (709) is fixedly connected to a grooved rod (710) at one end near the side rail (715). The inner wall of the grooved rod (710) is provided with a rubber clamp (711), and the other end of the telescopic rod (709) is provided with a flipping assembly (8).

5. The SMT laser processing apparatus according to claim 4, characterized in that, The flipping assembly (8) includes a roller (801) fixedly installed on one end of the telescopic rod (709) near the support base (701). A gear (802) is fixedly connected to the middle of the outer wall of the roller (801). A toothed plate (803) is fixedly connected to one side of the upper surface of the annular frame (702). The toothed plate (803) and the gear (802) are meshed together.

6. The SMT laser processing apparatus according to claim 5, characterized in that, On the same side, several rollers (801) are movably mounted with a limiting slide rail (804) near the annular frame (702), and the limiting slide rail (804) is fixedly mounted on the outer surface of the annular frame (702). The toothed plate (803) is fixedly mounted on one side of the limiting slide rail (804) below.

7. The SMT laser processing apparatus according to claim 3, characterized in that, The feeding assembly (9) includes a lower frame plate (901) fixedly installed on one side of the upper wall of the annular frame (702). The two lower frame plates (901) are fixedly connected to the opposite ends of a fixed plate (902). A trapezoidal frame (904) is fixedly connected between the two fixed plates (902). An upper frame (906) is fixedly connected to one side of the trapezoidal frame (904). Two side curved plates (910) are movably installed on both sides of the upper frame (906). A torsion spring frame (914) is movably installed at the intersection of the two side curved plates (910). The torsion spring frame (914) is fixedly installed on the upper surface of the trapezoidal frame (904). Auxiliary balls (911) are movably installed on the opposite sides of the two side curved plates (910). A lower window plate (913) is opened on one side of the upper surface of the trapezoidal frame (904). Several columnar balls (905) are movably installed in a straight line evenly distributed between the inner sidewalls of the lower window plate (913).

8. The SMT laser processing apparatus according to claim 7, characterized in that, A side frame (908) is fixedly connected above the upper frame (906). A right-angle frame plate (909) is fixedly installed on the lower side of one side of the side frame (908), and the lower side of the right-angle frame plate (909) is fixedly installed on the surface of the trapezoidal frame (904). A discharge window (907) is opened on the other side of the upper frame (906).

9. An SMT laser processing apparatus according to claim 7, characterized in that, The upper surface of the fixed plate (902) is fixedly connected to the lower auxiliary rail (903), and the upper surface of the trapezoidal frame (904) is fixedly installed with a magnet plate (912) on the side away from the upper frame (906).

10. An SMT laser processing apparatus according to claim 1, characterized in that, The auxiliary hinge (5) has a shaft (14) in the middle. One end of the shaft (14) is fixedly connected to a wheel (13). A transmission belt (12) is movably installed on the outer wall of the wheel (13). A transmission wheel (11) is movably installed on the other side of the transmission belt (12). The central axis of the transmission wheel (11) passes through the fixed frame (4) and is fixedly connected to a servo motor (10).

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