An automatic circuit board soldering device

Abstract

The present invention discloses an automatic circuit board soldering device, which includes a device body. A base is provided on the device body, a soldering machine capable of moving horizontally above the base, and a soldering rod on the soldering machine. A lifting rod is provided at the bottom of the soldering machine. The moving end of the lifting rod is connected to a vertical rod through a circular jitter device. A swing rod is rotatably connected to one side of the vertical rod, and a soldering rod is provided on one side of the swing rod. The soldering rod is rotationally and slidably connected to the vertical rod. A control combination one for controlling the swing of the swing rod is provided on the vertical rod. In the present invention, a circular jitter device is provided between the lifting rod and the vertical rod. When it is necessary to increase the solder joint coverage area, by starting the circular jitter device, the soldering rod can be controlled to perform a small-radius circular motion in place. At this time, the solder head at the bottom of the soldering rod will guide the solution to increase the solder joint area. This setting can achieve the expansion treatment of the solder joint without frequently controlling the movement of the soldering machine, thus having the advantage of higher efficiency in the expansion treatment of the solder joint.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board soldering equipment, and particularly relates to an automatic circuit board welding device. Background Art

[0002] A circuit board is composed of integrated circuits, crystal oscillators, trimming capacitors, and printed circuit boards. The circuit board is mainly used to connect various electronic components in an electronic device and serves as a structural support. The circuit board is the most active industry in the contemporary electronic component industry. The circuit board uses circuit miniaturization and visualization, which plays an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances. During the production process of the circuit board for small household appliances, a welding device will be used. Solder alloy materials mainly composed of tin are used as solder, and the solder melts and welds at a certain temperature.

[0003] In the actual use process, generally, the circuit board is fixed on a welding table and welded by holding a soldering gun. During manual welding, it is easy to cause inaccurate welding positions and welding offsets, reducing the welding quality. At present, some automatic welding devices have emerged on the market. The soldering rods in such devices have horizontal and vertical movement functions, and then a positioning base is set to drive the jig for placing the circuit board and wires to move back and forth, so that each position of the circuit board can be welded. However, this kind of welding device still has deficiencies when in use: 1. The welding head cannot perform a rapid circular motion in place, and thus cannot rapidly increase the solder joint area. For some situations where the solder joint area needs to be increased, it is usually necessary to frequently control the displacement of the soldering rod to achieve this, so there is a deficiency of low welding efficiency; 2. The welding head is prone to adhesion of the solder solution during welding, resulting in the problem of dripping liquid when the soldering rod moves. At the same time, the solder joints after welding are irregular, greatly reducing the connection strength after welding.

[0004] Therefore, the present invention proposes an automatic circuit board welding device. Summary of the Invention

[0005] The purpose of the present invention is to propose an automatic circuit board welding device to solve the problems mentioned in the background art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An automatic circuit board welding device, including a device body, on which a base is provided, a welding machine that can move horizontally above the base, and a welding rod located on the welding machine. A lifting rod is provided at the bottom of the welding machine. The moving end of the lifting rod is connected to a vertical rod through a circular jitter device. A swing rod is rotatably connected to one side of the vertical rod. A welding rod is provided on one side of the swing rod. The welding rod is rotatably and slidably connected to the vertical rod. A control combination one for controlling the swing of the swing rod is provided on the vertical rod. A control combination two is provided on the vertical rod, and this control combination two has the function of controlling the synchronous sliding and rotation of the welding rod and its independent rotation.

[0008] As a further description of the above technical solution:

[0009] The circular jitter device includes a connecting plate, a guiding telescopic rod, a driving shaft, and a control motor. A sliding sleeve is provided at the bottom of the connecting plate. The outer peripheral wall of the sliding sleeve is fixedly connected to one side of the vertical rod through the guiding telescopic rod. The driving shaft is rotatably connected to the middle of the connecting plate. One end of the driving shaft is fixedly connected to an eccentric shaft that is rotatably connected to the top of the vertical rod. The control motor is fixedly arranged on the top of the connecting plate and its output shaft is fixedly connected to the driving shaft. The top of the connecting plate is fixedly connected to the bottom of the lifting rod through a connecting seat.

[0010] As a further description of the above technical solution:

[0011] Two ear plates are welded to the bottom of the connecting plate, respectively close to both sides. A guiding shaft sleeved outside the sliding sleeve is fixedly connected between the two ear plates. A positioning hole for rotatably connecting with the eccentric shaft is opened at the top of the vertical rod.

[0012] As a further description of the above technical solution:

[0013] The bottom end of the swing rod is fixedly connected to a positioning tube that is rotatably connected to the bottom end of the vertical rod. The control combination one includes a driving motor and a transmission gear. An arc-shaped plate is fixedly connected to the top of the swing rod. The driving motor is fixedly arranged on one side of the vertical rod and its output shaft is fixedly connected to the transmission gear. The transmission gear meshes with the outer arc wall of the arc-shaped plate.

[0014] As a further description of the above technical solution:

[0015] A guiding block is fixedly connected to the other side of the swing rod. A rotating sleeve sleeved outside the welding rod is provided on the guiding block. The rotating sleeve is slidably connected to the welding rod.

[0016] As a further description of the above technical solution:

[0017] The control combination two includes a lead screw, a first transmission shaft, a second transmission shaft, a third transmission shaft and a servo motor one. One end of the positioning tube is fixedly connected with a square frame sleeved outside the welding rod with a gap. The first transmission shaft and the second transmission shaft are respectively rotatably connected to the opposite sides inside the square frame. The first transmission shaft and the positioning tube are coaxially arranged. The third transmission shaft is rotatably connected to one side inside the square frame and one end of it is connected to the first transmission shaft and the second transmission shaft through a first bevel gear set. The lead screw is rotatably connected to one side of the guiding block and one end of it is connected to the second transmission shaft through a second bevel gear set. A cantilever is rotatably connected to the welding rod near the top, and this cantilever is in screw-threaded connection with the lead screw. The servo motor one is fixedly arranged on one side of the vertical rod and its output shaft is fixedly connected to the first transmission shaft.

[0018] As a further description of the above technical solution:

[0019] The control combination two includes a servo motor two and a transmission bevel gear disc. An arm rod is welded to the outer peripheral wall of the rotating sleeve. A suspension rod is fixedly connected to the outside of the guiding block. A ratchet shaft is arranged in the middle of the transmission bevel gear disc. The servo motor two is fixedly arranged on the top of the suspension rod and its output shaft is fixedly connected to the ratchet shaft. An eccentric dial shaft that is rotationally and slidably matched with the arm rod is fixedly connected to the back of the transmission bevel gear disc. The other end of the third transmission shaft is fixedly connected to an intermediate bevel gear disc that meshes with the transmission bevel gear disc.

[0020] As a further description of the above technical solution:

[0021] A gantry is slidably connected up and down to the top of the base. A limiting sleeve sleeved on the top cross beam of the gantry is welded to the top of the connecting plate, and this limiting sleeve is slidably connected to the cross beam. Clamp mounting seats are fixedly connected to both sides inside the gantry.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0023] 1. In the present invention, a circumferential jitter device is arranged between the lifting rod and the vertical rod. When it is necessary to increase the coverage area of the solder joints, by starting the circumferential jitter device, the welding rod can be controlled to perform a small-radius circular motion in place. At this time, the welding head at the bottom of the welding rod will guide the molten liquid to increase the area of the solder joints. This kind of setting can achieve the expansion treatment of the solder joints without frequently controlling the movement of the welding machine, thus having the advantage of higher efficiency in the expansion treatment of the solder joints.

[0024] 2. In the present invention, the welding rod is rotationally and slidably connected to one side of the vertical rod. When the welding rod rotates back and forth, the welding head on it will accelerate the separation from the welding liquid, avoiding the problem of forming dripping liquid. At the same time, the welding liquid will become more round under the rotational treatment of the welding head, making the appearance of the solder joints after welding more round and the quality after welding higher.

[0025] 3. In the present invention, a gantry is slidably connected to the connecting plate on the circumferential shaker. The bottom of the gantry is slidably engaged with the base. When the lifting rod moves, it drives the gantry to move up and down through the connecting plate. Then, a mounting seat for connecting the pressing tool is arranged inside the gantry, making the pressing and releasing processes of the circuit board and wires on the jig of this device faster and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of an automatic circuit board welding device proposed by the present invention;

[0027] Figure 2 is a schematic structural diagram of the cooperation of the circumferential shaker, vertical rod, swing rod, control combination one and control combination two of an automatic circuit board welding device proposed by the present invention;

[0028] Figure 3 is Figure 2 a schematic diagram of the bottom;

[0029] Figure 4 is a plan view of the connection of the drive shaft, connecting plate and vertical rod of an automatic circuit board welding device proposed by the present invention;

[0030] Figure 5 is Figure 4 a bottom view of;

[0031] Figure 6 is a schematic diagram of the connection between the connecting plate and the gantry of an automatic circuit board welding device proposed by the present invention.

[0032] Legend:

[0033] 1. Base; 2. Welder; 3. Welding rod; 31. Cantilever; 4. Lifting rod; 5. Circumferential shaker; 51. Connecting plate; 511. Sliding sleeve; 512. Connecting seat; 513. Ear plate; 5131. Guide shaft; 514. Limiting sleeve; 52. Guide telescopic rod; 53. Drive shaft; 531. Eccentric shaft; 54. Control motor; 6. Vertical rod; 61. Positioning hole; 7. Swing rod; 71. Positioning tube; 711. Square box; 72. Arc plate; 73. Guide block; 731. Rotating sleeve; 7311. Arm rod; 732. Suspension rod; 8. Control combination one; 81. Drive motor; 82. Transmission gear; 9. Control combination two; 91. Lead screw; 92. First transmission shaft; 93. Second transmission shaft; 94. Third transmission shaft; 941. Intermediate bevel gear disc; 95. Servo motor one; 96. Servo motor two; 97. Transmission bevel gear; 971. Ratchet shaft; 972. Eccentric shift shaft; 101. Gantry; 1011. Cross beam; 1012. Mounting seat. DETAILED DESCRIPTION OF THE INVENTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Please refer to Figure 1-5 , an automatic circuit board soldering device, including a device body. This device body is used for soldering the connection between the circuit board and the wire. A base 1 is provided on this device body, a soldering machine 2 that can move horizontally and is located above the base 1, and a soldering rod 3 located on the soldering machine 2. A soldering head is provided at the bottom of the soldering rod 3. After the soldering head is heated, a wire feeder (not shown in the figure) transports solder wire to the position of the soldering head, the solder wire melts, and then the soldering is completed.

[0037] In this technical solution, a lifting rod 4 is provided at the bottom of the soldering machine 2. The lifting rod 4 is an electric telescopic rod. The moving end of the lifting rod 4 is connected to a vertical rod 6 through a circumferential shaker 5. One side of the vertical rod 6 is rotatably connected to a swing rod 7. A soldering rod 3 is provided on one side of the swing rod 7. When the circumferential shaker 5 is started, it will drive the soldering rod 3 to perform a small-radius circular motion. The purpose is to increase the soldering surface in place and improve the soldering efficiency.

[0038] Specifically, the circumferential shaker 5 includes a connecting plate 51, a guiding telescopic rod 52, a driving shaft 53 and a control motor 54. A sliding sleeve 511 is provided at the bottom of the connecting plate 51. Preferably, during specific implementation, two ear plates 513 are welded to the bottom of the connecting plate 51 near both sides respectively, and a guiding shaft 5131 sleeved outside the sliding sleeve 511 is fixedly connected between the two ear plates 513. The outer peripheral wall of the sliding sleeve 511 is fixedly connected to one side of the vertical rod 6 through the guiding telescopic rod 52. The guiding telescopic rod 52 is a common two-section telescopic structure, and the guiding telescopic rod 52 is perpendicular to the sliding sleeve 511. The driving shaft 53 is rotatably connected to the middle of the connecting plate 51, and an eccentric shaft 531 rotatably connected to the top of the vertical rod 6 is fixedly connected to one end of the driving shaft 53. Preferably, during specific implementation, a positioning hole 61 rotatably connected to the eccentric shaft 531 is provided at the top of the vertical rod 6, and a bearing can be provided between the positioning hole 61 and the eccentric shaft 531. When the driving shaft 53 rotates, the eccentric shaft 531 will drive the vertical rod 6 to perform a circular motion. At this time, the sliding sleeve 51 will slide adaptively, and the guiding telescopic rod 52 will stretch and contract adaptively, thereby realizing the small-radius circular motion of the welding head at the bottom of the welding rod 3. The control motor 54 is fixedly arranged on the top of the connecting plate 51 and its output shaft is fixedly connected to the driving shaft 53. The control motor 54 provides driving force for the rotation of the driving shaft 53. The top of the connecting plate 51 is fixedly connected to the bottom of the lifting rod 4 through a connecting seat 512. The connecting seat 512 is of a gantry seat structure, and the height of the vertical rod 6 can be controlled when the lifting rod 4 moves.

[0039] Furthermore, the welding rod 3 is rotatably and slidably connected to the vertical rod 6. In this embodiment, the rotation plane of the welding rod 3 is parallel to the vertical rod 6. A control combination 8 for controlling the swing of the swing rod 7 is provided on the vertical rod 6. When the swing rod 7 swings, the welding rod 3 thereon will follow and swing back and forth, so that the welding rod 3 can be in a vertical state and an inclined state. When in the inclined state, the inclination angle will also be different. This setting, combined with the lateral sliding function of the welding 2, facilitates the welding of different positions of the circuit board on the positioning jig.

[0040] Specifically, a positioning tube 71 rotatably connected to the bottom end of the vertical rod 6 is fixedly connected to the bottom end of the swing rod 7. The control combination 8 includes a driving motor 81 and a transmission gear 82. An arc plate 72 is fixedly connected to the top of the swing rod 7. The driving motor 81 is fixedly arranged on one side of the vertical rod 6 and its output shaft is fixedly connected to the transmission gear 82. The transmission gear 82 meshes with the outer arc wall of the arc plate 72. When the transmission gear 82 rotates, it can drive the arc plate 72 to move, and then drive the swing rod 7 to swing.

[0041] Further, a guide block 73 is fixedly connected to the other side of the swing rod 7. A rotating sleeve 731 sleeved outside the welding rod 3 is arranged on the guide block 73. The rotating sleeve 731 is slidably connected to the welding rod 3. This setting enables the welding rod 3 and the swing rod 7 to achieve rotational and sliding functions. When the welding rod 3 rotates, it can drive the welding head to rotate. When the welding head rotates, the solder around it can easily and quickly break away from the welding head. At the same time, it can make the solder joints more round and uniform, having the advantage of improving the welding quality.

[0042] A control combination two 9 is arranged on the vertical rod 6. The control combination two 9 has the function of controlling the synchronous sliding and rotation of the welding rod 3 and its independent rotation.

[0043] Specifically, the control combination two 9 includes a lead screw 91, a first transmission shaft 92, a second transmission shaft 93, a third transmission shaft 94, and a servo motor one 95. One end of the positioning tube 71 is fixedly connected with a square frame 711 sleeved outside the welding rod 3 with a gap. The first transmission shaft 92 and the second transmission shaft 93 are respectively rotatably connected to the opposite sides inside the square frame 711. The first transmission shaft 92 and the positioning tube 71 are coaxially arranged. The third transmission shaft 94 is rotatably connected to one side inside the square frame 711 and its one end is connected to the first transmission shaft 92 and the second transmission shaft 93 through a first bevel gear set. The first bevel gear set includes three transition bevel gears of the same or different sizes (as shown in the figure). This setting enables the first transmission shaft 92 to indirectly drive the second transmission shaft 93 to rotate when it rotates. The lead screw 91 is rotatably connected to one side of the guide block 73 and its one end is connected to the second transmission shaft 93 through a second bevel gear set. The second bevel gear set includes two connecting bevel gears of the same or different sizes (as shown in the figure). When the second transmission shaft 93 rotates, it can indirectly drive the lead screw 91 to rotate. A cantilever 31 is rotatably connected to the welding rod 3 near the top. The cantilever 31 is screwed with the lead screw 91. When the lead screw 91 rotates, it can drive the welding rod 3 to move axially by means of the screwing action, realizing the slow feeding control of the welding rod 3. The servo motor one 95 is fixedly arranged on one side of the vertical rod 6 and its output shaft is fixedly connected to the first transmission shaft 92. The servo motor one 95 provides driving force for the rotation of the first transmission shaft 92.

[0044] Further, the control combination two 9 includes a servo motor two 96 and a transmission bevel gear disk 97. An arm rod 7311 is welded to the outer peripheral wall of the rotating sleeve 731. A suspension rod 732 is fixedly connected to the outside of the guide block 73. A ratchet shaft 971 is arranged in the middle of the transmission bevel gear disk 97. The function of the ratchet shaft 971 is that it will not drive the transmission bevel gear disk 97 to rotate when rotating forward, but will drive the transmission bevel gear disk 97 to rotate vice versa. The servo motor two 96 is fixedly arranged at the top of the suspension rod 732 and its output shaft is fixedly connected to the ratchet shaft 971. An eccentric dial shaft 972 that is rotationally and slidably matched with the arm rod 7311 is fixedly connected to the back of the transmission bevel gear disk 97. Specifically, a waist-shaped hole adapted to the eccentric dial shaft 972 can be opened on the arm rod 7311. When the servo motor two 96 drives the transmission bevel gear disk 97 to rotate, the arm rod 7311 will be driven to swing back and forth through the eccentric dial shaft 972, and then drive the rotating sleeve 731 to rotate back and forth. The other end of the third transmission shaft 94 is fixedly connected with an intermediate bevel gear disk 941 that meshes with the transmission bevel gear disk 97. Thus, when the welding rod 3 moves axially, it will also drive the rotating sleeve 731 to rotate back and forth. This situation is suitable for the case where the welding rod 3 moves away from the circuit board after welding, and there is no need to start the servo motor two 96. The purpose is to accelerate the separation of the tin melt at the welding head and avoid the problem of forming dripping liquid.

[0045] Embodiment 2

[0046] Please refer to Figure 1 and Figure 6 , and the difference from Embodiment 1 is that a gantry frame 101 is slidably connected up and down to the top of the base 1. Specifically, a support rod can be slidably connected to the bottom of the gantry frame 101, and the bottom of the support rod is fixedly connected to the base 1. A positioning table fixedly connected to the base 1 is installed below the gantry frame 101. Jacks adapted to the jig are opened on the positioning table. When in use, the jig carrying the circuit board and the wire to be welded is placed on the positioning table. A limit sleeve 514 sleeved on the top cross beam 1011 of the gantry frame 101 is welded to the top of the connection plate 51. The limit sleeve 514 is slidably connected to the cross beam 1011. When the connection plate 51 moves downward, it will drive the gantry frame 101 to move downward. Clamp mounting seats 1012 are fixedly connected to both sides inside the gantry frame 101. The function of the clamp mounting seats 1012 is to install clamps adapted to the welding of the circuit board. This setting makes the pressing and positioning control of the circuit board and the wire to be welded on the jig more rapid and convenient. The setting of the limit sleeve 514 does not affect the lateral movement of the welding machine 2.

[0047] Working principle: When in use, place the jig for placing the circuit board and the wire to be welded on the positioning table on the base 1, and then control the forward stroke of the lifting rod 4. The connecting plate 51 drives the gantry 101 to move downward. The pressing tool connected to the inner side of the gantry 101 through the mounting seat 1012 will press the circuit board and the wire on the jig. Then, control the horizontal sliding of the welding machine 2, and start the driving motor 81 to drive the transmission gear 82 to rotate, thereby driving the swing rod 7 to swing until the welding head of the welding rod 3 faces the welding part. Start the first servo motor 95, and the first transmission shaft 92 will be driven to rotate. After transmission, the second transmission shaft 93 will drive the lead screw 91 to rotate. At this time, the welding rod 3 will move axially and drive the welding head close to the welding place. Control the heating of the welding rod 3, and then control the external wire feeder to convey the solder wire to the welding head. The solder wire is melted, and then the welding is completed. When it is necessary to increase the solder joint area, start the control motor 54. The drive shaft 53 will drive the eccentric shaft 531 to rotate, thereby driving the vertical rod 6 to perform a small-radius circular motion. At this time, the welding head will also perform a small-radius circular motion, thereby increasing the solder joint area. When the solder adheres to the welding head, start the second servo motor 96 at this time. Driven by the eccentric shifting shaft 972, the rotating sleeve 731 drives the welding rod 3 to rotate back and forth, so that the welding head and the molten liquid are separated more quickly. At the same time, it can drive the solder liquid at the solder joint to be more round, and the solder joint is more round after solidification, thereby improving the firmness of the post-welding connection.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An automatic circuit board soldering device, comprising an equipment body, on which a base (1) is provided, a soldering machine (2) located above the base (1) and capable of moving horizontally, and a soldering rod (3) located on the soldering machine (2). A lifting rod (4) is provided at the bottom of the soldering machine (2), and it is characterized in that, The action end of the lifting rod (4) is connected to a vertical rod (6) through a circumferential shaker (5). One side of the vertical rod (6) is rotatably connected to a swing rod (7). A welding rod (3) is arranged on one side of the swing rod (7). The welding rod (3) is rotatably and slidably connected to the vertical rod (6). A control assembly one (8) for controlling the swing of the swing rod (7) is arranged on the vertical rod (6). A control assembly two (9) is arranged on the vertical rod (6). The control assembly two (9) has the function of controlling the synchronous sliding and rotation of the welding rod (3) and its independent rotation. The circumferential shaker (5) includes a connecting plate (51), a guiding telescopic rod (52), a driving shaft (53) and a control motor (54). A sliding sleeve (511) is arranged at the bottom of the connecting plate (51). The outer peripheral wall of the sliding sleeve (511) is fixedly connected to one side of the vertical rod (6) through the guiding telescopic rod (52). The driving shaft (53) is rotatably connected to the middle of the connecting plate (51). One end of the driving shaft (53) is fixedly connected to an eccentric shaft (531) that is rotatably connected to the top of the vertical rod (6). The control motor (54) is fixedly arranged on the top of the connecting plate (51) and its output shaft is fixedly connected to the driving shaft (53). The top of the connecting plate (51) is fixedly connected to the bottom of the lifting rod (4) through a connecting seat (512). Two ear plates (513) are welded to the bottom of the connecting plate (51) and are respectively close to both sides. A guiding shaft (5131) sleeved outside the sliding sleeve (511) is fixedly connected between the two ear plates (513). A positioning hole (61) for rotatably connecting with the eccentric shaft (531) is opened at the top of the vertical rod (6). The bottom end of the swing rod (7) is fixedly connected to a positioning tube (71) that is rotatably connected to the bottom end of the vertical rod (6). The control assembly one (8) includes a driving motor (81) and a transmission gear (82). An arc-shaped plate (72) is fixedly connected to the top of the swing rod (7). The driving motor (81) is fixedly arranged on one side of the vertical rod (6) and its output shaft is fixedly connected to the transmission gear (82). The transmission gear (82) meshes with the outer arc wall of the arc-shaped plate (72). A guiding block (73) is fixedly connected to the other side of the swing rod (7). A rotating sleeve (731) sleeved outside the welding rod (3) is arranged on the guiding block (73). The rotating sleeve (731) is slidably connected to the welding rod (3). The control assembly two (9) includes a lead screw (91), a first transmission shaft (92), a second transmission shaft (93), a third transmission shaft (94) and a servo motor one (95). One end of the positioning tube (71) is fixedly connected to a square frame (711) that is sleeved outside the welding rod (3) with a gap. The first transmission shaft (92) and the second transmission shaft (93) are respectively rotatably connected to the opposite sides inside the square frame (711). The first transmission shaft (92) is coaxially arranged with the positioning tube (71). The third transmission shaft (94) is rotatably connected to one side inside the square frame (711) and one end of it is connected to the first transmission shaft (92) and the second transmission shaft (93) through a bevel gear set one.The lead screw (91) is rotatably connected to one side of the guide block (73), and one end thereof is connected to the second transmission shaft (93) through the second bevel gear set. A cantilever (31) is rotatably connected to the welding rod (3) near the top, and the cantilever (31) is in screw connection with the lead screw (91). The first servo motor (95) is fixedly arranged on one side of the vertical rod (6), and its output shaft is fixedly connected to the first transmission shaft (92). The control assembly two (9) includes a second servo motor (96) and a transmission bevel gear disc (97). An arm rod (7311) is welded to the outer peripheral wall of the rotating sleeve (731). A suspension rod (732) is fixedly connected to the outside of the guide block (73). A ratchet shaft (971) is arranged in the middle of the transmission bevel gear disc (97). The second servo motor (96) is fixedly arranged on the top of the suspension rod (732), and its output shaft is fixedly connected to the ratchet shaft (971). An eccentric dial shaft (972) which is in rotational and sliding fit with the arm rod (7311) is fixedly connected to the back of the transmission bevel gear disc (97). The other end of the third transmission shaft (94) is fixedly connected to an intermediate bevel gear disc (941) which meshes with the transmission bevel gear disc (97).

2. The automatic circuit board soldering device according to claim 1, wherein A gantry frame (101) is slidably connected up and down to the top of the base (1). A limiting sleeve (514) sleeving on the top cross beam (1011) of the gantry frame (101) is welded to the top of the connecting plate (51). The limiting sleeve (514) is slidably connected to the cross beam (1011). Clamp mounting seats (1012) are fixedly connected to both sides inside the gantry frame (101).

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