A circuit board automatic welding equipment

Abstract

A circuit board automatic welding device relates to the technical field of circuit board welding, comprising a transfer part, a welding part and a control end; the welding part comprises a transport mechanism, a fixing mechanism, a moving mechanism, a plug-in mechanism and a welding mechanism; the transport mechanism is provided with a group of cyclically moving transmission belt systems; three steering racks are fixedly installed on the transmission belt system in sequence from front to back; the plug-in mechanism and the welding mechanism are arranged in two gaps between the three steering racks in sequence from front to back; the plug-in mechanism and the welding mechanism each correspond to a group of moving mechanisms; the fixing mechanism is used to fix the circuit board, and a steering gear is coaxially fixedly installed on the connecting rod thereon, and the steering gear intermittently meshes with the steering rack; the transfer part is used to transport the circuit board to the fixing mechanism of the welding part; the welding part of the invention can automatically install plug-in components on the circuit board and perform welding, thereby eliminating the process of manual assembly and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board welding, and in particular to automatic circuit board welding equipment. Background Art

[0002] The circuit board is made of an insulating board as a substrate, cut into a certain size, with at least one conductive pattern attached thereon and arranged with holes (such as component holes, fastening holes, metallized holes, etc.), which are used to replace the chassis of the previous electronic components and realize the interconnection between the electronic components. Electronic components are divided into surface mount components and plug-in components, wherein the plug-in components are assembled on the circuit board by inserting the leads into the component holes and welding the leads. The SMT production line currently used to assemble electronic components on the surface of the circuit board is expensive, and general small factories cannot afford the high cost. The low-cost automatic soldering machine cannot automatically insert the plug-in components on the circuit board, and still needs to be manually installed for the plug-in components, and the production efficiency is low. Therefore, the present invention provides a device that can automatically install plug-in components on a circuit board and perform soldering. Summary of the invention

[0003] In view of the above problems, the present invention proposes an automatic circuit board welding device, and the technical solution used is:

[0004] A circuit board automatic welding device comprises a transfer part, a welding part and a control end; the welding part comprises a transport mechanism, a fixing mechanism, a moving mechanism, a plug-in mechanism and a welding mechanism; the transport mechanism comprises a support plate, a transmission belt system, a steering rack and a steering gear; the support plate is symmetrically provided with two pieces, each of which is provided with a set of circulating transmission belt systems; three steering racks are fixedly installed on the transmission belt system from front to back in sequence; the plug-in mechanism and the welding mechanism are arranged in two gaps between the three steering racks in sequence from front to back; the plug-in mechanism and the welding mechanism each correspond to a set of moving mechanisms;

[0005] The fixing mechanism is provided with several groups, each group includes a connecting rod, a fixing frame, a fixing block and a linkage mechanism; the left and right sides of the fixing frame are symmetrically fixedly installed with horizontally arranged connecting rods, and the two connecting rods are respectively rotatably installed on two groups of transmission belt systems; the steering gear is coaxially fixedly installed on the connecting rod and intermittently meshes with the steering rack; the left and right ends of the fixing frame are symmetrically and horizontally slidably installed with fixing blocks for fixing the circuit board; the linkage mechanism is arranged on the fixing frame to drive the fixing block to move;

[0006] When the steering gear is engaged with the steering racks at the front and rear ends, the steering gear drives the connecting rod to rotate 90°; when the steering gear is engaged with the middle steering rack, the steering gear drives the connecting rod to rotate 180°;

[0007] The transfer part is used to transport the circuit board to the fixing mechanism of the welding part; the control end is used to control the operation of the entire circuit board automatic welding equipment.

[0008] Preferably, the transmission belt system includes a transport motor, a transport belt and a transport wheel; the transport belt is rectangular, and each corner is supported by a transport wheel rotatably mounted on a support plate; the transport motor is fixedly mounted on the support plate, and its output end is coaxially fixedly connected to one of the transport wheels.

[0009] Preferably, the linkage mechanism includes a connecting rod, an input rack, an output gear, a card block, a moving block and a reset electric cylinder; each fixed block corresponds to at least one connecting rod, one end of the connecting rod is rotatably and slidably connected to the fixed block, and the other end is fixedly connected to a transmission shaft rotatably mounted on the fixed frame; the transmission shafts on the left and right sides are synchronously transmitted; the connecting rods on one of the transmission shafts are fixedly connected to the output gear; the output gear is meshed with the input rack that is slidably and elastically mounted on the fixed frame; the input rack is intermittently pushed by the circuit board to drive the output gear to rotate; a limit block corresponding to the card block is fixedly provided on the input rack, and the card block is rotatably mounted on the moving block; the card block can only rotate in one direction and correspondingly reset and rotate, and a coil spring is provided between the card block and the moving block; the moving block is slidably mounted on the fixed frame; the reset electric cylinder is fixedly mounted on the fixed frame, and its output end is fixedly connected to the moving block.

[0010] Preferably, the moving mechanism includes an electric screw 1, an electric screw 2 and a cylinder; the electric screw 1 is horizontally mounted on a support plate through a mounting frame; the electric screw 2 is horizontally arranged and perpendicular to the electric screw 1; the electric screw 2 is slidably mounted on the electric screw 1; the cylinder is vertically arranged and slidably mounted on the electric screw 2.

[0011] Preferably, the plug-in mechanism includes a component conveyor belt and an electric clamp; the component conveyor belt is arranged on one side of the support plate; the electric clamp is moved by the moving mechanism and is used to insert the components on the component conveyor belt into the circuit board fixed by the fixing mechanism.

[0012] Preferably, the welding mechanism comprises an electric soldering iron, a solder wire, a traction motor, a traction gear, a traction roller, a release motor, a winding shaft and a mounting plate; the mounting plate is driven to move by a moving mechanism; the electric soldering iron is fixedly mounted on the mounting plate; the solder wire is coiled on the winding shaft; the winding shaft is rotatably mounted on a support plate; the release motor is fixedly mounted on the support plate, and an output end thereof is coaxially and fixedly connected with the winding shaft; at least one pair of traction rollers is provided, and both are rotatably mounted on the mounting plate; a traction gear is coaxially and fixedly mounted on each traction roller; the traction gears on the same pair of traction rollers are meshed with each other, and one of the traction gears is coaxially and fixedly connected with the output end of the traction motor fixedly mounted on the mounting plate; the end of the solder wire passes through each pair of traction rollers, is slidably mounted on the mounting plate, and contacts with the soldering iron tip of the electric soldering iron.

[0013] Preferably, the transfer part includes a support frame, a groove wheel mechanism, a transfer motor, a transfer sub-bracket, a transfer electric cylinder, a sliding plate and a suction cup; the transfer sub-bracket is rotatably mounted on the support frame; a sliding plate is slidably mounted on each branch of the transfer sub-bracket, and a number of suction cups are fixedly mounted on each sliding plate; a number of transfer electric cylinders are fixedly mounted on each branch of the transfer sub-bracket, and the output end of the transfer electric cylinder is fixedly connected to the corresponding sliding plate; the transfer motor is fixedly mounted on the support frame; the groove wheel mechanism is mounted on the support frame, and its active dial is coaxially fixedly connected to the output end of the transfer motor, and its driven groove wheel is coaxially fixedly mounted on the transfer sub-bracket, and the number of grooves of the driven groove wheel is equal to the number of branches of the transfer sub-bracket.

[0014] Preferably, it also includes a conveyor belt 1 arranged below the transfer sub-bracket, which is used to convey the circuit board to be plug-in soldered.

[0015] Preferably, it also includes a conveyor belt arranged at the rear and lower part of the transport mechanism, which is used to transport the circuit board after the plug-in welding is completed.

[0016] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0017] The welding part of the present invention is designed by the cooperation of the transportation mechanism, the fixing mechanism, the moving mechanism, the plug-in mechanism and the welding mechanism. After the fixing mechanism fixes the circuit board, the transportation mechanism drives the fixing mechanism to move and rotate, so that the circuit board passes through the plug-in mechanism and the welding mechanism in turn, and the plug-in components can be automatically installed on the circuit board and welded, which saves the manual assembly process and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the assembly structure of the transfer part of the present invention.

[0020] Figure 3 It is a schematic diagram of the assembly structure of the welding part of the present invention.

[0021] Figure 4 It is a schematic diagram of the assembly structure of the transport mechanism in the welding part of the present invention.

[0022] Figure 5 It is a schematic diagram of the partial assembly structure of the transport mechanism in the welding part of the present invention.

[0023] Figure 6 It is a schematic diagram of the assembly structure of the fixing mechanism in the welding part of the present invention.

[0024] Figure 7-8 It is a schematic diagram of the partial assembly structure of the fixing mechanism in the welding part of the present invention.

[0025] Fig. 9 It is a schematic diagram of the assembly structure of the moving mechanism in the welding part of the present invention.

[0026] Figure 10-11 It is a schematic diagram of the assembly structure of the plug-in mechanism and the corresponding moving mechanism in the welding part of the present invention.

[0027] Figure 12-13 It is a schematic diagram of the assembly structure of the welding mechanism and the corresponding moving mechanism in the welding part of the present invention.

[0028] Fig.14 It is a schematic diagram of the assembly structure of the welding mechanism in the welding part of the present invention.

[0029] Fig.15 It is a schematic diagram of the connection between the control terminal and the electrical components of the present invention.

[0030] Figure Number:

[0031] 1- Transfer unit;

[0032] 101-groove wheel mechanism; 102-transfer motor; 103-rotating sub-bracket; 104-transfer electric cylinder; 105-sliding plate; 106-suction cup;

[0033] 2- welding part;

[0034] 201-transport mechanism (2011-support plate; 2012-transport motor; 2013-transport belt; 2014-transport wheel; 2015-steering rack; 2016-steering gear); 202-fixing mechanism (2021-connecting rod; 2022-fixing frame; 2023-fixing block; 2024-linking rod; 2025-input rack; 2026-output gear; 2027-block; 2028-moving block; 2029-reset electric cylinder ); 203-moving mechanism (2031-electric screw 1; 2032-electric screw 2; 2033-cylinder); 204-plug-in mechanism (2041-component conveyor belt; 2042-electric clamp); 205-welding mechanism (2051-electric soldering iron; 2052-solder wire; 2053-traction motor; 2054-traction gear; 2055-traction roller; 2056-release motor; 2057-winding shaft; 2058-mounting plate);

[0035] 3-Conveyor belt 1;

[0036] 4- Conveyor belt 2;

[0037] 5-Control terminal. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0039] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "in", "out", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] Example:

[0041] This embodiment is used for the automated installation and welding of plug-in components of a circuit board.

[0042] like Figure 1As shown, a circuit board automatic welding equipment comprises a transfer part 1, a welding part 2, a conveyor belt 1 3, a conveyor belt 2 4 and a control terminal 5; the transfer part 1 is arranged in front of the welding part 2, and is used to transport the circuit board to the fixing mechanism 202 of the welding part 2; the conveyor belt 1 3 is arranged below the transfer sub-bracket 102, and is used to transport the circuit board to be plug-in welded; the conveyor belt 4 is arranged at the rear and lower part of the transport mechanism 201, and is used to transport the circuit board after the plug-in welding is completed; the control terminal 5 is used to control the operation of the entire circuit board automatic welding equipment.

[0043] like Figure 2 As shown, the transfer part 1 includes a support frame, a groove wheel mechanism 101, a transfer motor 102, a transfer sub-bracket 103, a transfer electric cylinder 104, a sliding plate 105 and a suction cup 106; the transfer sub-bracket 103 is rotatably installed on the support frame; the transfer sub-bracket 103 is provided with six branches in a radial shape with the same center, each branch is slidably mounted with a sliding plate 105, and each sliding plate 105 is fixedly mounted with three suction cups 106; two transfer electric cylinders 104 are fixedly mounted on each branch of the transfer sub-bracket 103, and the output end of the transfer electric cylinder 104 is fixedly connected to the corresponding sliding plate 105; the transfer motor 102 is fixedly installed on the support frame; the groove wheel mechanism 101 is installed on the support frame, and its active dial is coaxially fixedly connected to the output end of the transfer motor 102, and its driven groove wheel is coaxially fixedly installed on the transfer sub-bracket 103, and the number of grooves of the driven groove wheel is equal to the number of branches of the transfer sub-bracket 103.

[0044] like Figure 3 As shown, the welding part 2 includes a transport mechanism 201 , a fixing mechanism 202 , a moving mechanism 203 , an inserting mechanism 204 and a welding mechanism 205 .

[0045] like Figure 4-5 As shown, the transport mechanism 201 includes a support plate 2011, a transmission belt system, a steering rack 2015 and a steering gear 2016; two support plates 2011 are symmetrically provided, and each support plate 2011 is provided with a set of circulating transmission belt systems; the transmission belt system includes a transport motor 2012, a transport belt 2013 and a transport wheel 2014; the transport belt 2013 is rectangular, and each corner is supported by a transport wheel 2014 rotatably mounted on the support plate 2011; the transport motor 2012 is fixedly mounted on the support plate 2011, and its output end is coaxially fixedly connected to one of the transport wheels 2014; three steering racks 2015 are fixedly mounted on the transmission belt system from front to back, and the length of the steering rack 2015 located in the middle is twice that of the steering racks 2015 located at both ends.

[0046] like Figure 3As shown, the plug-in mechanism 204 and the welding mechanism 205 are sequentially arranged in two gaps between the three steering racks 2015 from front to back; the plug-in mechanism 204 and the welding mechanism 205 each correspond to a group of moving mechanisms 203.

[0047] The fixing mechanism 202 has several groups (some groups are not shown in the drawings of the specification), such as Figure 6-8 As shown, each group includes a connecting rod 2021, a fixing frame 2022, a fixing block 2023, a linkage rod 2024, an input rack 2025, an output gear 2026, a clamping block 2027, a moving block 2028 and a reset electric cylinder 2029; the left and right sides of the fixing frame 2022 are symmetrically fixedly installed with horizontally arranged connecting rods 2021, and the two connecting rods 2021 are rotatably installed on the two conveyor belts 2013 respectively; the steering gear 2016 is coaxially fixedly installed on the connecting rod 2021 and intermittently meshes with the steering rack 2015; when the steering gear 2016 meshes with the steering racks 2015 at the front and rear ends, the steering gear 2016 drives the connecting rod 2021 to rotate 90°; when the steering gear 2016 meshes with the middle steering rack 2015, the steering gear 2016 drives the connecting rod 2021 to rotate 180°;

[0048] Fixed blocks 2023 are symmetrically and horizontally slidably installed on the left and right ends of the fixed frame 2022 for fixing the circuit board; each fixed block 2023 corresponds to two connecting rods 2024, one end of the connecting rod 2024 is rotatably and slidably connected to the fixed block 2023, and the other end is fixedly connected to a transmission shaft rotatably installed on the fixed frame 2022; the transmission shafts on the left and right sides are synchronously connected through transmission wheels, transmission belts and transmission gears.

[0049] like Figure 7-8 As shown, the connecting rod 2024 on one of the transmission shafts is fixedly connected to the output gear 2026; the output gear 2026 is meshed with the input rack 2025 which is slidable and elastically mounted on the fixed frame 2022 through a compression spring; the input rack 2025 is intermittently pushed by the circuit board to drive the output gear 2026 to rotate; a limit block corresponding to the block 2027 is fixedly provided on the input rack 2025, and the block 2027 is rotatably mounted on the moving block 2028; the block 2027 can only rotate in one direction and correspondingly reset, and a coil spring is provided between the block 2027 and the moving block 2028; the moving block 2028 is slidably mounted on the fixed frame 2022; the reset electric cylinder 2029 is fixedly mounted on the fixed frame 2022, and its output end is fixedly connected to the moving block 2028;

[0050] Specifically, the rotating sub-bracket 103 transfers the circuit board to be soldered to the front of the fixing mechanism 202 in a vertical state at the front end of the conveyor belt 2013, and the transfer electric cylinder 104 pushes the circuit board to move in the direction of the fixing mechanism 202; during the movement, the circuit board pushes the input rack 2025 to move, driving the output gear 2026 to rotate, and the output gear 2026 drives the two transmission shafts to rotate synchronously; the transmission shaft drives the connecting rod 2024 to rotate around the transmission shaft, thereby driving the fixed block 2023 to slide, and the two fixed blocks 2023 approach each other and clamp the circuit board; when the circuit board pushes the input rack 2025 to move, the compression spring is compressed, and the limit block drives the card block 2027 to rotate backward. After the limit block passes the card block 2027, the card block 2027 returns to its original position under the action of the coil spring and clamps the limit block; after the circuit board is fixed, the transfer electric cylinder 104 drives the suction cup 106 to move, and the suction cup 106 is separated from the circuit board;

[0051] After the circuit board plug-in is welded, the reset electric cylinder 2029 drives the moving block 2028 to move, the moving block 2028 drives the clamping block 2027 to move, the clamping block 2027 releases the limit block, and the input rack 2025 returns to its original position under the rebound action of the compression spring, the input rack 2025 pushes the circuit board, and the output gear 2026 rotates in the opposite direction, driving the fixed block 2023 to move through the connecting rod 2024, the two fixed blocks 2023 release the circuit board, and the circuit board falls on the conveyor belt 24.

[0052] like Fig. 9 As shown, the moving mechanism 203 includes an electric screw 1 2031, an electric screw 2 2032 and a cylinder 2033; the electric screw 1 2031 is horizontally mounted on the support plate 2011 through a mounting frame; the electric screw 2 2032 is horizontally arranged and perpendicular to the electric screw 1 2032; the electric screw 2 2032 is slidably mounted on the electric screw 1 2031; the cylinder 2033 is vertically arranged and slidably mounted on the electric screw 2 2032; the mutual cooperation of the electric screw 1 2031, the electric screw 2 2032 and the cylinder 2033 can realize the three-axis movement of the electric clamp 2042 or the mounting plate 2058.

[0053] like Figure 10-11 As shown, the plug-in mechanism 204 includes a component conveyor belt 2041 and an electric clamp 2042; the component conveyor belt 2041 is arranged on one side of the support plate 2011; the electric clamp 2042 is fixedly mounted on the telescopic end of the cylinder 2033 of the corresponding moving mechanism 203, and is used to insert the components on the component conveyor belt 2041 into the circuit board fixed by the fixing mechanism 202.

[0054] like Figure 12-14As shown, the welding mechanism 205 includes an electric soldering iron 2051, a solder wire 2052, a traction motor 2053, a traction gear 2054, a traction roller 2055, a release motor 2056, a winding shaft 2057 and a mounting plate 2058; the mounting plate 2058 is fixedly mounted on the telescopic end of the cylinder 2033 of the corresponding moving mechanism 203; the electric soldering iron 2051 is fixedly mounted on the mounting plate 2058; the solder wire 2052 is wound on the winding shaft 2057; the winding shaft 2057 is rotatably mounted on the support plate 2011; the release motor 2056 is fixedly mounted on the support plate 2011 11, its output end is coaxially fixedly connected with the winding shaft 2057; a pair of traction rollers 2055 are provided, and both are rotatably mounted on the mounting plate 2058; a traction gear 2054 is coaxially fixedly mounted on each traction roller 2055; the two traction gears 2054 are meshed with each other, and one of the traction gears 2054 is coaxially fixedly connected with the output end of the traction motor 2058 fixedly mounted on the mounting plate 2058; the end of the solder wire 2052 passes through each pair of traction rollers 2055, and is slidably mounted on the mounting plate 2058, and contacts with the soldering iron tip of the electric soldering iron 2051.

[0055] like Fig.15 As shown, the control end 5 includes a main controller, a human-machine interactive display screen, an information transmission module, a storage module and a power module, and the main controller is electrically connected to the human-machine interactive display screen, the information transmission module, the storage module, the power module, the transfer motor 102, the transfer electric cylinder 104, the transport motor 2012, the reset electric cylinder 2029, the electric lead screw 1 2031, the electric lead screw 2 2032, the cylinder 2033, the component conveyor belt 2041, the electric clamp 2042, the electric soldering iron 2051, the traction motor 2053, the release motor 2056, the conveyor belt 1 3, and the conveyor belt 2 4; the main controller is used to control the operation of the entire circuit board automatic welding equipment; the human-machine interactive display screen is used to set the running distance value of each electrical component, and the automatic operation control after determining the set value; the information transmission module is used for information transmission between the main controller and the transfer part 1, the welding part 2, the conveyor belt 1 3 and the conveyor belt 2 4; the power module is used to provide a stable power supply for the control end 5; the storage module is used to store the operation information data of the entire circuit board automatic welding equipment.

[0056] The working steps of this embodiment are as follows:

[0057] In the first step, the transfer cylinder 104 pushes the sliding plate 105, and the suction cup 106 absorbs the circuit board to be soldered; the transfer motor 102 drives the active dial to rotate, the active dial drives the driven groove wheel to rotate 60 degrees, and the driven groove wheel drives the rotating sub-bracket 103 to rotate, and the circuit board is transferred to the front of the fixing mechanism 202 in a vertical state at the front end of the conveyor belt 2013;

[0058] In the second step, the transfer cylinder 104 pushes the sliding plate 105, and the sliding plate 105 pushes the circuit board, and the circuit board is fixed on the fixing mechanism 202;

[0059] In the third step, the transport motor 2012 drives the transport wheel 2012 to rotate, the transport wheel 2012 drives the transport belt 2013 to move, and the transport belt 2013 drives the fixing mechanism 202 thereon to move; the steering gear 2016 on the connecting rod 2021 meshes with the steering rack 2015 at the front end, driving the fixing frame 2022 to rotate 90°, so that the fixing mechanism 202 and the circuit board thereon are turned to a horizontal state;

[0060] In the fourth step, the electric gripper 2042, driven by the corresponding moving mechanism 203, inserts the plug-in components on the component conveyor belt 2041 into the circuit board one by one;

[0061] Step 5: The conveyor belt 2013 continues to drive the fixing mechanism 202 to move, and the steering gear 2016 meshes with the middle steering rack 2015, driving the fixing frame 2022 to rotate 180° so that the leads of the plug-in components face upwards;

[0062] Step 6: Under the drive of the corresponding moving mechanism 203, the electric soldering iron 2051 heats the solder wire 2052 to solder the leads of the plug-in components; the release motor 2056 drives the winding shaft 2057 to rotate, and the traction motor 2053 drives the traction gear 2054 to rotate, thereby driving the traction roller 2055 to rotate, so that the solder wire 2052 continuously moves toward the soldering iron tip of the electric soldering iron 2051 until all the leads are soldered;

[0063] Step 7: The conveyor belt 2013 continues to drive the fixing mechanism 202 to move, the reset electric cylinder 2029 is started, the fixing block 2023 is released, and the circuit board with the plug-in welded falls on the conveyor belt 2 4;

[0064] In the eighth step, the conveyor belt 2013 continues to drive the fixing mechanism 202 to move, the steering gear 2016 meshes with the steering rack 2015 at the rear end, and drives the fixing frame 2022 to rotate 90 degrees, so that the fixing mechanism 202 turns to the initial vertical state; then, the fixing mechanism 202 gradually moves to the front end along with the conveyor belt 2013;

[0065] The above steps complete the automated installation and welding of plug-in components on a circuit board.

Claims

1. A circuit board automated welding equipment, characterized in that: The invention comprises a transfer part (1), a welding part (2) and a control end (5); the welding part (2) comprises a transport mechanism (201), a fixing mechanism (202), a moving mechanism (203), a plug-in mechanism (204) and a welding mechanism (205); the transport mechanism (201) comprises a support plate (2011), a transmission belt system, a steering rack (2015) and a steering gear (2016); two support plates (2011) are symmetrically provided, and each support plate (2011) is provided with a set of cyclically moving transmission belt systems; three steering racks (2015) are fixedly mounted on the transmission belt system in sequence from front to back; the plug-in mechanism (204) and the welding mechanism (205) are arranged in two gaps between the three steering racks (2015) in sequence from front to back; the plug-in mechanism (204) and the welding mechanism (205) each correspond to a set of moving mechanisms (203); The fixing mechanism (202) is provided with a plurality of groups, each group comprising a connecting rod (2021), a fixing frame (2022), a fixing block (2023) and a linkage mechanism; the fixing frame (2022) is symmetrically and fixedly provided with horizontally arranged connecting rods (2021) on both sides thereof, and the two connecting rods (2021) are respectively rotatably installed on two groups of transmission belt systems; the steering gear (2016) is coaxially and fixedly installed on the connecting rod (2021) and intermittently meshes with the steering rack (2015); the fixing blocks (2023) are symmetrically and horizontally slidably installed on both ends thereof, and are used to fix the circuit board; the linkage mechanism is provided on the fixing frame (2022) and is used to drive the fixing block (2023) to move; When the steering gear (2016) is meshed with the steering racks (2015) at the front and rear ends, the steering gear (2016) drives the connecting rod (221) to rotate 90°; when the steering gear (2016) is meshed with the middle steering rack (2015), the steering gear (2016) drives the connecting rod (2021) to rotate 180°; The transfer part (1) is used to transport the circuit board to the fixing mechanism (202) of the welding part (2); and the control end (5) is used to control the operation of the entire circuit board automatic welding equipment.

2. The circuit board automatic welding equipment according to claim 1, characterized in that: The transmission belt system comprises a transport motor (2012), a transport belt (2013) and a transport wheel (2014); the transport belt (2013) is rectangular, and each corner is supported by a transport wheel (2014) rotatably mounted on a support plate (2011); the transport motor (2012) is fixedly mounted on the support plate (2011), and its output end is coaxially fixedly connected to one of the transport wheels (2014).

3. The circuit board automatic welding equipment according to claim 1, characterized in that: The linkage mechanism comprises a linkage rod (2024), an input rack (2025), an output gear (2026), a clamping block (2027), a moving block (2028) and a reset electric cylinder (2029); each fixed block (2023) corresponds to at least one linkage rod (2024); one end of the linkage rod (2024) is rotatably and slidably connected to the fixed block (2023), and the other end is fixedly connected to a transmission shaft rotatably mounted on a fixed frame (2022); the transmission shafts on the left and right sides are synchronously connected in transmission; the linkage rods (2024) on one of the transmission shafts are fixedly connected to the output gear (2026); the output gear (2026) is slidably and elastically mounted on the fixed frame (2022); The input rack (2025) is meshed with an input rack (2025); the input rack (2025) is intermittently pushed by the circuit board to drive the output gear (2026) to rotate; a limit block corresponding to the clamping block (2027) is fixedly provided on the input rack (2025), and the clamping block (2027) is rotatably mounted on the moving block (2028); the clamping block (2027) can only rotate in one direction and correspondingly reset, and a coil spring is provided between the clamping block (2027) and the moving block (2028); the moving block (2028) is slidably mounted on the fixing frame (2022); the reset electric cylinder (2029) is fixedly mounted on the fixing frame (2022), and its output end is fixedly connected to the moving block (2028).

4. The circuit board automatic welding equipment according to claim 1, characterized in that: The moving mechanism (203) comprises an electric lead screw 1 (2031), an electric lead screw 2 (2032) and a cylinder (2033); the electric lead screw 1 (2031) is horizontally mounted on a support plate (2011) via a mounting frame; the electric lead screw 2 (2032) is horizontally arranged and perpendicular to the electric lead screw 1 (2032); the electric lead screw 2 (2032) is slidably mounted on the electric lead screw 1 (2031); and the cylinder (2033) is vertically arranged and slidably mounted on the electric lead screw 2 (2032).

5. The circuit board automatic welding equipment according to claim 1, characterized in that: The plug-in mechanism (204) comprises a component conveyor belt (2041) and an electric clamp (2042); the component conveyor belt (2041) is arranged on one side of the support plate (2011); the electric clamp (2042) is driven to move by the moving mechanism (203) and is used to insert the component on the component conveyor belt (2041) into the circuit board fixed by the fixing mechanism (202).

6. The circuit board automatic welding equipment according to claim 1, characterized in that: The welding mechanism (205) comprises an electric soldering iron (2051), a solder wire (2052), a traction motor (2053), a traction gear (2054), a traction roller (2055), a release motor (2056), a winding shaft (2057) and a mounting plate (2058); the mounting plate (2058) is driven to move by the moving mechanism (203); the electric soldering iron (2051) is fixedly mounted on the mounting plate (2058); the solder wire (2052) is wound on the winding shaft (2057); the winding shaft (2057) is rotatably mounted on a support plate (2011); the release motor (2056) is fixedly mounted on the support plate (2011), and its output The ends of the traction rollers (2055) are coaxially fixedly connected with the winding shaft (2057); at least one pair of traction rollers (2055) are provided, and both are rotatably mounted on the mounting plate (2058); a traction gear (2054) is coaxially fixedly mounted on each traction roller (2055); the traction gears (2054) on the traction rollers (2055) of the same pair are meshed with each other, and one of the traction gears (2054) is coaxially fixedly connected with the output end of the traction motor (2058) fixedly mounted on the mounting plate (2058); the end of the solder wire (2052) passes through each pair of traction rollers (2055), is slidably mounted on the mounting plate (2058), and contacts the soldering iron tip of the electric soldering iron (2051).

7. The circuit board automatic welding equipment according to claim 1, characterized in that: The transfer part (1) comprises a support frame, a groove wheel mechanism (101), a transfer motor (102), a transfer sub-bracket (103), a transfer electric cylinder (104), a sliding plate (105) and a suction cup (106); the transfer sub-bracket (103) is rotatably mounted on the support frame; a sliding plate (105) is slidably mounted on each branch of the transfer sub-bracket (103), and a plurality of suction cups (106) are fixedly mounted on each sliding plate (105); each branch of the transfer sub-bracket (103) is A plurality of transfer electric cylinders (104) are fixedly mounted on the support, and the output end of the transfer electric cylinder (104) is fixedly connected to the corresponding sliding plate (105); the transfer motor (102) is fixedly mounted on the support; the grooved wheel mechanism (101) is mounted on the support, and its active dial is coaxially fixedly connected to the output end of the transfer motor (102), and its driven grooved wheel is coaxially fixedly mounted on the transfer sub-support (103), and the number of grooves of the driven grooved wheel is equal to the number of branches of the transfer sub-support (103).

8. The circuit board automatic welding equipment according to claim 7, characterized in that: It also includes a conveyor belt (3) arranged below the transfer sub-bracket (102) and used for conveying the circuit board to be inserted and soldered.

9. The circuit board automatic welding equipment according to claim 1, characterized in that: It also includes a conveyor belt (4) arranged at the lower rear of the transport mechanism (201) and used for transporting the circuit board after the plug-in welding is completed.

Images