A circuit board patch fusion mechanism

Abstract

This utility model proposes a circuit board surface mount welding mechanism, including a frame and a platform. The platform is fixedly connected to the inner side of the frame, and a gantry frame is fixedly connected to the edge of the top surface of the platform. A track is fixedly connected to the top surface of the gantry frame. A first servo motor is fixedly connected to the end of the back of the gantry frame. A synchronous pulley is installed at the output end of the first servo motor and the middle section of the gantry frame. A synchronous belt is movably connected to the outer surface of the synchronous pulley, and a slide is fixedly connected to the outer surface of the synchronous belt. The slide is movably connected to the track. The advantages of this utility model are: this device realizes a dual-station design of the welding mechanism within a limited space. The welding mechanism, which can move linearly and rise and fall, is mounted on the double gantry frame. Combined with the variable-distance positioning and conveying mechanism for circuit boards below, it can simultaneously realize the surface mount welding of circuit boards of the same or different sizes at two stations, resulting in high work efficiency and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, and in particular to a circuit board patch welding mechanism. Background Technology

[0002] Surface mount technology (SMT) soldering is a core step in electronics manufacturing, and its quality directly affects the reliability and performance of electronic products. With the miniaturization and high-density development of electronic products, surface mount technology (SMT) has become the mainstream process. However, existing SMT soldering equipment still has the following significant drawbacks: Insufficient adaptability: Traditional welding equipment typically uses fixed conveyor tracks, making it difficult to adapt to PCBs of different sizes. When processing circuit boards with significant size differences, frequent fixture changes or mechanical adjustments are required, leading to low production efficiency. This limitation is particularly pronounced in R&D verification and small-batch production.

[0003] Single-station efficiency bottleneck: Most equipment only supports single-station welding, which is insufficient to meet the flexible production needs of multiple varieties and small batches. Therefore, a circuit board surface mount welding mechanism is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a circuit board patch soldering mechanism to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of the present invention provides a circuit board patch welding mechanism, including a frame and a platform. The platform is fixedly connected to the inner side of the frame, and a gantry frame is fixedly connected to the edge of the top surface of the platform. A track is fixedly connected to the top surface of the gantry frame. A first servo motor is fixedly connected to the end of the back of the gantry frame. A synchronous pulley is installed at the output end of the first servo motor and the middle section of the gantry frame. A synchronous belt is movably connected to the outer surface of the synchronous pulley. A carriage is fixedly connected to the outer surface of the synchronous belt. The carriage is movably connected to the track. An electric cylinder is fixedly connected to the front of the carriage. A welding head is fixedly connected to the end of the output end of the electric cylinder. Several optical axes are fixedly connected to the top of the platform, and a first positioning frame and a second positioning frame are movably connected to the outer surface of the optical axes. The first positioning frame is located on one side of the second positioning frame. The top surface of the platform is fixedly connected to a first motor and a second motor. The output ends of the first motor and the second motor are respectively fixedly connected to a first lead screw and a second lead screw. The first lead screw is threadedly connected to a first positioning frame, and the second lead screw is threadedly connected to a second positioning frame. Both the first positioning frame and the second positioning frame include two positioning bridges; A guide groove is provided on the positioning bridge, and a second servo motor is fixedly connected to the end of the back of the positioning bridge. A guide wheel is installed at the output end of the second servo motor and the end of the positioning bridge, and a conveyor belt is movably connected to the outer surface of the guide wheel.

[0007] Preferably, as described in any of the above embodiments, the frame has openable windows on both sides, and the track is made of stainless steel.

[0008] The above technical solution is adopted: This device consists of four parts, the first part being the frame and platform, which is the main body of the device; The second part is a welding mechanism that can move linearly and rise and fall. It is equipped with two sets, including a gantry, a track, a first servo motor, a synchronous pulley, a synchronous belt, a carriage, an electric cylinder, and a welding head. When the electric cylinder is activated, the welding head rises and falls. When the first servo motor is working, the synchronous belt rotates, driving the carriage, electric cylinder, and welding head to move linearly, thereby realizing the welding of the circuit board patch on the positioning frame below.

[0009] The third part is a variable-pitch positioning frame mechanism, including a first positioning frame and a second positioning frame. Both the first and second positioning frames are composed of two positioning bridges. The spacing between the positioning bridges is adjustable to accommodate circuit boards of different widths. There is a second servo motor at the end of the positioning bridge. When it is working, the guide wheel and the conveyor belt rotate, driving the circuit board to move linearly in the guide groove, which works in conjunction with the above-mentioned welding mechanism. The fourth part is the pitch-changing mechanism of the positioning frame, which includes a first motor, a second motor, a first lead screw, and a second lead screw. The first lead screw is threadedly connected to the first positioning frame, and the second lead screw is threadedly connected to the second positioning frame. It can control the spacing of the positioning bridges of the first positioning frame and the second positioning frame respectively.

[0010] Preferably, of any of the above solutions, the first servo motor is mounted horizontally, and the position of the carriage on the track is adjustable.

[0011] Preferably, in any of the above schemes, the electric cylinder is installed vertically, and the electric cylinder and welding head are located behind the gantry frame.

[0012] Using the above technical solution: This device realizes a dual-station design of the welding mechanism within a limited space. The welding mechanism, which can move linearly and be raised and lowered, is mounted on the double gantry frame. Together with the variable-distance positioning and conveying mechanism of the circuit board below, it can simultaneously realize the surface mounting welding of circuit boards of the same or different sizes in two stations. It has high working efficiency and strong adaptability.

[0013] Preferably, in any of the above schemes, the optical axes are grouped in pairs, and the spacing between the first positioning frame and the second positioning frame is adjustable.

[0014] The above technical solution is adopted as follows: Device composition: Main support structure (frame and platform): Frame: A high-strength metal frame forms the main support of the device. Openable maintenance windows are provided on both sides for easy equipment maintenance.

[0015] Platform: Fixedly connected to the inside of the frame, serving as the core load-bearing base. The top edge of the platform is bolted to the gantry.

[0016] Dual-station welding mechanism: Gantry frame: Two sets are symmetrically arranged, with a fixed rail (stainless steel material) on the top, providing high-precision guidance.

[0017] Drive unit: The first servo motor is installed on the back of each gantry frame, and the motor output end and the middle section of the gantry frame are equipped with synchronous pulleys to form a closed-loop transmission through synchronous belts.

[0018] Motion component: A carriage is fixed to the outer surface of the synchronous belt. The carriage is slidably connected to the track, and its position can be precisely adjusted by the first servo motor.

[0019] Fusion welding actuator: A vertical electric cylinder is mounted on the front of the carriage, and the output end of the electric cylinder is connected to the fusion welding head. The electric cylinder drives the fusion welding head to achieve Z-axis lifting and lowering, and the fusion welding head is located behind the gantry.

[0020] Variable distance positioning conveyor mechanism: Positioning frame unit: Several optical axes are arranged in parallel above the platform (two axes form a group), and a sliding first positioning frame and a second positioning frame are installed on the optical axes.

[0021] Positioning bridge structure: Each positioning frame consists of two positioning bridges, and the spacing between the positioning bridges can be adjusted independently. Guide grooves are opened on the top of the positioning bridges for guiding the circuit board during transport.

[0022] Conveying drive: A second servo motor is installed at the end of the positioning bridge, and its output end is connected to the guide wheel. The conveyor belt is movably connected to the guide wheel and the bottom of the inner side of the guide groove to realize the linear conveying of the circuit board.

[0023] Positioning frame pitch changing mechanism: Drive motors: The first motor and the second motor (stepper or servo motor) are installed on the top surface of the platform.

[0024] Transmission mechanism: The output end of the first motor is connected to the first lead screw, and the output end of the second motor is connected to the second lead screw. The first lead screw is threadedly engaged with the first positioning frame, and the second lead screw is threadedly engaged with the second positioning frame.

[0025] Preferably, in any of the above embodiments, the spacing between the positioning bridges is adjustable, and the conveyor belt is movably connected to the bottom of the inner side of the guide trough.

[0026] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: This circuit board surface mount welding mechanism achieves a dual-station design within a limited space. The welding mechanism, which can move linearly and be raised and lowered, is mounted on a double gantry frame. Together with the variable-distance positioning and conveying mechanism for circuit boards below, it can simultaneously perform surface mount welding of circuit boards of the same or different sizes at two stations, resulting in high work efficiency and strong adaptability.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention from a second perspective; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0029] In the diagram: 1-Frame, 2-Platform, 3-Gantry, 4-Railway, 5-First servo motor, 6-Synchronous pulley, 7-Synchronous belt, 8-Slide carriage, 9-Electric cylinder, 10-Welding head, 11-Optical axis, 12-First positioning frame, 13-Second positioning frame, 14-First motor, 15-Second motor, 16-First lead screw, 17-Second lead screw, 18-Positioning bridge, 19-Guide groove, 20-Second servo motor, 21-Guide wheel, 22-Conveyor belt. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In this utility model, 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 connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] like Figure 1-4 As shown, this circuit board surface mount welding mechanism includes a frame 1 and a platform 2. The platform 2 is fixedly connected to the inner side of the frame 1, and a gantry 3 is fixedly connected to the edge of the top surface of the platform 2. A track 4 is fixedly connected to the top surface of the gantry 3. A first servo motor 5 is fixedly connected to the end of the back of the gantry 3. A synchronous pulley 6 is installed at the output end of the first servo motor 5 and the middle section of the gantry 3. A synchronous belt 7 is movably connected to the outer surface of the synchronous pulley 6. A slide 8 is fixedly connected to the outer surface of the synchronous belt 7. The slide 8 is movably connected to the track 4. An electric cylinder 9 is fixedly connected to the front of the slide 8. A welding head 10 is fixedly connected to the end of the output end of the electric cylinder 9. Several optical axes 11 are fixedly connected to the top of the platform 2. A first positioning frame 12 and a second positioning frame 13 are movably connected to the outer surface of the optical axes 11. The first positioning frame 12 is located on one side of the second positioning frame 13. The top surface of platform 2 is fixedly connected to a first motor 14 and a second motor 15. The output ends of the first motor 14 and the second motor 15 are respectively fixedly connected to a first lead screw 16 and a second lead screw 17. The first lead screw 16 is threadedly connected to the first positioning frame 12, and the second lead screw 17 is threadedly connected to the second positioning frame 13. Both the first positioning frame 12 and the second positioning frame 13 include two positioning bridges 18; A guide groove 19 is provided on the positioning bridge 18. A second servo motor 20 is fixedly connected to the end of the back of the positioning bridge 18. A guide wheel 21 is installed at the output end of the second servo motor 20 and the end of the positioning bridge 18. A conveyor belt 22 is movably connected to the outer surface of the guide wheel 21.

[0033] Example 1: The frame 1 has openable windows on both sides, and the track 4 is made of stainless steel. The first servo motor 5 is horizontally mounted, and the position of the carriage 8 on the track 4 is adjustable. The electric cylinder 9 is vertically mounted, and the electric cylinder 9 and welding head 10 are located behind the gantry 3. Optical shafts 11 are arranged in pairs, and the spacing between the first positioning frame 12 and the second positioning frame 13 is adjustable. The spacing between the positioning bridges 18 is adjustable, and the conveyor belt 22 is movably connected to the bottom of the inner side of the guide trough 19.

[0034] Example 2: This device consists of four parts. The first part is the frame 1 and the platform 2, which are the main body of the device. The second part is a welding mechanism that can move linearly and rise and fall. It is equipped with two sets, including a gantry 3, a track 4, a first servo motor 5, a synchronous pulley 6, a synchronous belt 7, a slide 8, an electric cylinder 10, and a welding head 10. When the electric cylinder 10 is activated, the welding head 10 rises and falls. When the first servo motor 5 is working, the synchronous belt 7 rotates, driving the slide 8, the electric cylinder 10, and the welding head 10 to move linearly, thereby realizing the welding of the circuit board patch on the positioning frame 13 below.

[0035] The third part is a variable-pitch positioning frame mechanism, including a first positioning frame 12 and a second positioning frame 13. Both the first positioning frame 12 and the second positioning frame 13 are composed of two positioning bridges 18. The spacing between the positioning bridges 18 is adjustable to accommodate circuit boards of different widths. The end of the positioning bridge 18 has a second servo motor 20. When it is working, the guide wheel 21 and the conveyor belt 22 rotate, driving the circuit board to move linearly in the guide groove 19, which works in conjunction with the above-mentioned welding mechanism. The fourth part is the pitch-changing mechanism of the positioning frame, including a first motor 14, a second motor 15, a first lead screw 16, and a second lead screw 17. The first lead screw 16 is threadedly connected to the first positioning frame 12, and the second lead screw 17 is threadedly connected to the second positioning frame 13. The spacing of the positioning bridges 18 of the first positioning frame 12 and the second positioning frame 13 can be controlled respectively.

[0036] Device Composition: Main Support Structure (Frame and Platform): Frame 1: Constructs a high-strength metal frame, forming the main support of the device. Openable maintenance windows are provided on both sides for easy equipment maintenance.

[0037] Platform 2: Fixedly connected to the inside of frame 1, serving as the core load-bearing base. The top edge of the platform is bolted to the gantry 3.

[0038] Dual-station welding mechanism: Gantry 3: Two sets are symmetrically arranged, with a top fixed track 4 (stainless steel material) to provide high-precision guidance.

[0039] Drive unit: A first servo motor 5 is installed on the back of each gantry frame, and a synchronous pulley 6 is installed at the motor output end and in the middle section of the gantry frame, forming a closed-loop transmission through a synchronous belt 7.

[0040] Motion component: The outer surface of the timing belt 7 is fixed with a slide 8, which is slidably connected to the track 4, and its position can be precisely adjusted by the first servo motor 5.

[0041] Fusion welding actuator: A vertical electric cylinder 9 is mounted on the front of the slide 8, and the output end of the electric cylinder 9 is connected to the fusion welding head 10. The electric cylinder 9 drives the fusion welding head 10 to achieve Z-axis lifting and lowering, and the fusion welding head 10 is located behind the gantry 3.

[0042] Variable distance positioning conveyor mechanism: Positioning frame unit: Several optical axes 11 are arranged in parallel above the platform 2 (two axes form a group), and a sliding first positioning frame 12 and a second positioning frame 13 are installed on the optical axes 11.

[0043] Positioning bridge structure: Each positioning frame consists of two positioning bridges 18, and the spacing between the positioning bridges 18 can be adjusted independently. A guide groove 19 is opened on the top of the positioning bridge 18 for guiding the circuit board during transport.

[0044] Conveying drive: A second servo motor 20 is installed at the end of the positioning bridge 18, and its output end is connected to the guide wheel 21. The conveyor belt 22 is movably connected to the guide wheel 21 and the bottom of the inner side of the guide groove 19 to realize the linear conveying of the circuit board.

[0045] Positioning frame pitch changing mechanism: Drive motors: The first motor 14 and the second motor 15 (stepper or servo motors) are mounted on the top surface of platform 2.

[0046] Transmission mechanism: The output end of the first motor 14 is connected to the first lead screw 16, and the output end of the second motor 15 is connected to the second lead screw 17. The first lead screw 16 is threadedly engaged with the first positioning frame 12, and the second lead screw 17 is threadedly engaged with the second positioning frame 13.

[0047] The working principle of this utility model is as follows: Circuit board positioning and conveying: The circuit board to be processed is placed on the positioning frame mechanism: Width adjustment: The first motor 14 / second motor 15 drives the first lead screw 16 / second lead screw 17 to rotate, which in turn drives the first positioning frame 12 / second positioning frame 13 to move along the optical axis 11, so that the spacing between the two sets of positioning bridges 18 is adapted to the width of the circuit board.

[0048] Conveying control: The second servo motor 20 drives the guide wheel 21 to rotate, which in turn drives the conveyor belt 22 to run in the guide groove 19, accurately conveying the circuit board to the welding station.

[0049] Fusion welding process: Dual-station synchronous or independent operation: Horizontal positioning: The first servo motor 5 drives the carriage 8 to move along the track 4 through the synchronous wheel 6 and the synchronous belt 7, so that the welding head 10 is accurately positioned above the solder joint of the circuit board.

[0050] Vertical welding: The electric cylinder 9 pushes the welding head 10 down to contact the welding point and perform the welding operation. After completion, it is reset.

[0051] Advantages of dual-station collaboration: Two independent gantry structures allow for the simultaneous processing of two circuit boards of the same size (doubling efficiency).

[0052] By independently adjusting the spacing of the first positioning frame 12 and the welding process of the second positioning frame 13, circuit boards of different sizes can be processed in parallel (to meet diverse production needs).

[0053] Compared with the prior art, the present invention has the following advantages: This circuit board surface mount welding mechanism achieves a dual-station design within a limited space. The welding mechanism, which can move linearly and be raised and lowered, is mounted on the double gantry 3. Together with the variable-distance positioning and conveying mechanism for circuit boards below, it can simultaneously perform surface mount welding of circuit boards of the same or different sizes at two stations. It has high work efficiency and strong adaptability.

Claims

1. A circuit board surface mount welding mechanism, characterized in that, Includes a frame (1) and a platform (2). The platform (2) is fixedly connected to the inner side of the frame (1). A gantry frame (3) is fixedly connected to the edge of the top surface of the platform (2). A track (4) is fixedly connected to the top surface of the gantry frame (3). A first servo motor (5) is fixedly connected to the end of the back of the gantry (3). A synchronous wheel (6) is installed at the output end of the first servo motor (5) and the middle section of the gantry (3). A synchronous belt (7) is movably connected to the outer surface of the synchronous wheel (6). A slide (8) is fixedly connected to the outer surface of the synchronous belt (7). The slide (8) is movably connected to the track (4). An electric cylinder (9) is fixedly connected to the front of the slide (8). A welding head (10) is fixedly connected to the end of the output end of the electric cylinder (9). Several optical axes (11) are fixedly connected above the platform (2). A first positioning frame (12) and a second positioning frame (13) are movably connected to the outer surface of the optical axes (11). The first positioning frame (12) is located on one side of the second positioning frame (13). The top surface of the platform (2) is fixedly connected to a first motor (14) and a second motor (15). The output ends of the first motor (14) and the second motor (15) are respectively fixedly connected to a first lead screw (16) and a second lead screw (17). The first lead screw (16) is threadedly connected to the first positioning frame (12), and the second lead screw (17) is threadedly connected to the second positioning frame (13). The first positioning frame (12) and the second positioning frame (13) each include two positioning bridges (18). A guide groove (19) is provided on the positioning bridge (18). A second servo motor (20) is fixedly connected to the end of the back of the positioning bridge (18). A guide wheel (21) is installed at the output end of the second servo motor (20) and the end of the positioning bridge (18). A conveyor belt (22) is movably connected to the outer surface of the guide wheel (21).

2. The circuit board surface mount welding mechanism as described in claim 1, characterized in that: The frame (1) has openable windows on both sides, and the track (4) is made of stainless steel.

3. The circuit board surface mount welding mechanism as described in claim 2, characterized in that: The first servo motor (5) is installed horizontally, and the position of the carriage (8) on the track (4) is adjustable.

4. The circuit board surface mount welding mechanism as described in claim 3, characterized in that: The electric cylinder (9) is installed vertically, and the electric cylinder (9) and the welding head (10) are located behind the gantry frame (3).

5. The circuit board surface mount welding mechanism as described in claim 4, characterized in that: The optical axes (11) are arranged in pairs, and the spacing between the first positioning frame (12) and the second positioning frame (13) is adjustable.

6. The circuit board surface mount welding mechanism as described in claim 5, characterized in that: The spacing between the positioning bridges (18) is adjustable, and the conveyor belt (22) is movably connected to the bottom of the inner side of the guide groove (19).

Images