Circuit board element welding equipment

Abstract

The utility model relates to circuit board element welding equipment, which belongs to the technical field of welding equipment and comprises a base, and a conveyor belt is arranged on the upper surface of the base. According to the circuit board element welding equipment, the top ends of the three nitrogen conveying pipes are all communicated with the nitrogen conveying pipeline on the outer side, the temperature of nitrogen in the first air outlet plate on the rear side can be obviously increased compared with that of nitrogen in the prior art, and therefore solder paste, attached to the element, on the circuit board is melted, the element is connected with the circuit board through the melted solder paste, and the welding efficiency is improved. The circuit board subjected to hot melting moves along with the conveying belt, then the draught fan is started, the draught fan conducts air outlet, cooling is conducted through the second air outlet plate and at least two second air outlet nozzles, solder paste is solidified again, and at the moment, elements and the circuit board can be firmly combined together; and a plurality of circuit boards can be conveyed and welded step by step under the action of mutual cooperation of the conveying belt, the three heating cylinders, the three first air outlet plates and at least two first air outlet nozzles, so that the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a circuit board component welding device. Background Art

[0002] With the development of electronic technology, people's requirements for the quality, function and properties of power supplies are becoming higher and higher. Integrated power supplies are also commonly used in circuit board components. Circuit board components are also called printed circuits or PCB boards. They can be found in every electronic device in the world today. When soldering circuit board components, a circuit board processing component soldering equipment is required.

[0003] For example, Chinese patent CN218461117U discloses an electrical component welding device for circuit board processing. The following solution is proposed: a welding box having a first servo motor fixedly mounted on the bottom inner wall of the welding box, a rotating plate fixedly mounted on the output shaft of the first servo motor, a rotating rod provided at the bottom of the rotating plate, a rotating groove provided on the bottom inner wall of the welding box, the rotating rod rotatably mounted within the rotating groove, a circuit board electrical component placed on top of the rotating plate, a mounting seat provided on the rotating plate, a sliding hole provided at the top of the mounting seat, a moving rod slidably mounted within the sliding hole, the bottom end of the moving rod extending to the outside of the sliding hole and fixedly mounted with a pressure plate, the pressure plate cooperating with the circuit board electrical component. By starting the first servo motor, the output shaft of the first servo motor drives the rotating plate to rotate, thereby adjusting the position of the circuit board electrical component, thereby facilitating welding of the circuit board electrical component at other locations.

[0004] Although the above patent can adjust the position of the circuit board electrical components, thereby facilitating welding of other positions of the circuit board electrical components, the patent only welds a single circuit board component. When welding multiple circuit board components is required, the welding efficiency is average, thereby reducing practicality. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a circuit board component welding equipment, which has the advantages of being able to perform conveying welding and improving welding efficiency. It solves the problem that only a single circuit board component can be welded. When multiple circuit board components need to be welded, the welding efficiency is average, thereby reducing practicality.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a circuit board component welding device, comprising a base, a conveyor belt provided on the upper surface of the base, a U-shaped frame fixed on the upper surface of the conveyor belt, a welding mechanism provided on the top wall of the inner cavity of the U-shaped frame, and a driving mechanism provided on the left and right sides of the conveyor belt;

[0007] The welding mechanism includes three heating cylinders, three movable tubes, three first air outlet plates, no less than two first air outlet nozzles, three nitrogen delivery pipes and a connecting assembly. The three heating cylinders are all fixed on the top wall of the inner cavity of the U-shaped frame, the top of the movable tube is connected to the bottom end of the heating cylinder, the upper surface of the first air outlet plate is connected to the bottom end of the movable tube, and no less than two first air outlet nozzles are all connected to the lower surfaces of the three first air outlet plates. The three nitrogen delivery pipes are all fixed on the upper surface of the U-shaped frame, and the bottom ends pass through the U-shaped frame and are all connected to the top ends of the three heating cylinders.

[0008] By adopting this technical solution, conveying welding can be performed to improve welding efficiency.

[0009] Furthermore, the connecting assembly includes two first electric push rods and two fixed rods, the two first electric push rods are fixed on the left and right sides of the top wall of the U-shaped frame inner cavity, the two fixed rods are fixed on the left and right sides of the upper surface of the three first air outlet plates, and the outer side of the output shaft of the first electric push rod is fixedly connected to the upper surface of the fixed rod.

[0010] By adopting this technical solution, the three first air outlet plates can be driven by the first electric push rods on the left and right sides to adjust the horizontal height.

[0011] Furthermore, a mounting plate is fixed inside the U-shaped frame, a second air outlet plate is fixed on the lower surface of the mounting plate, a fan is fixed on the upper surface of the mounting plate, and the air outlet end of the fan passes through the mounting plate through a pipe and is connected to the upper surface of the second air outlet plate.

[0012] By adopting this technical solution, the mounting plate supports and fixes the second air outlet plate.

[0013] Furthermore, the lower surface of the second air outlet plate is connected to at least two second air outlet nozzles.

[0014] By adopting this technical solution, the second air outlet nozzles, which are no less than two in number, can evenly discharge air and cool the circuit board components after welding.

[0015] Furthermore, the driving mechanism includes two second electric push rods, two clamping plates, no less than two rollers, two sliding holes and two sliding rods. The second electric push rods are fixed on the left and right sides of the U-shaped frame. The outer side of the output shaft of the second electric push rod passes through the interior of the U-shaped frame and extends to the interior. The outer side of the output shaft of the second electric push rod is slidably connected to the interior of the U-shaped frame.

[0016] By adopting this technical solution, the position of the circuit board conveyance can be adjusted through the driving mechanism.

[0017] Furthermore, the opposite sides of the left and right clamping plates are fixedly connected to the outer sides of the output shafts of the second electric push rods on the left and right sides, and the opposite sides of the left and right sliding rods are fixedly connected to the opposite sides of the left and right clamping plates. There are no less than two rollers that are rotatably connected to the opposite sides of the left and right clamping plates. The two sliding holes are opened on the left and right sides of the U-shaped frame, and the sliding rods are slidably connected to the inside of the sliding holes.

[0018] By adopting this technical solution, the left and right clamping plates can be driven to move in synchronous relative directions through the second electric push rods on the left and right sides.

[0019] Furthermore, the sliding rod moves linearly left and right inside the sliding hole, and the gap between the sliding rod and the sliding hole is adapted.

[0020] By adopting this technical solution, the sliding rod slides inside the sliding hole, which can improve the stability of the clamping plate in moving left and right.

[0021] Furthermore, at least two heating wires are fixed inside the heating tube.

[0022] By adopting this technical solution, the nitrogen inside the heating tube can be heated by the heating wire.

[0023] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0024] 1. The circuit board component welding equipment connects the top ends of the three nitrogen delivery pipes with the outer nitrogen delivery pipes, and then the circuit board can be placed on the conveyor belt and then transported to the inside of the U-shaped frame. The nitrogen in the three nitrogen delivery pipes flows into the inside of the three heating cylinders and is heated, and then flows into the inside of the three first air outlet plates, and then flows out through the lower surfaces of the three first air outlet plates, which are connected to a number of no less than two first air outlet nozzles, and can heat the circuit board transported on the conveyor belt. The three first air outlet plates can gradually increase the temperature of the circuit board. When the circuit board reaches the reflow position, the rear first air outlet nozzle The temperature of the nitrogen in the air outlet plate will be significantly higher than before, thereby melting the solder paste that is bonded to the components on the circuit board, and connecting the components to the circuit board through the molten solder paste. The hot-melt circuit board moves with the conveyor belt, and the fan is turned on, the fan discharges air and cools it through the second air outlet plate and no less than two second air outlet nozzles to make the solder paste re-solidify. At this time, the components and the circuit board can be firmly combined together. Through the cooperation of the conveyor belt, three heating cylinders, three first air outlet plates and no less than two first air outlet nozzles, multiple circuit boards can be conveyed and gradually welded, thereby improving welding efficiency.

[0025] 2. In the circuit board component welding equipment, when the circuit board is conveyed on the conveyor belt, the second electric push rods on the left and right sides can be started at the same time, and the clamping plates on the left and right sides can be driven to move synchronously in relative directions. Through the action of no less than two rollers on the left and right sides, the position of the circuit board can be adjusted to facilitate welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the welding mechanism of the utility model;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the first air outlet plate of the utility model;

[0029] Figure 4 This is a schematic diagram of the driving mechanism of the utility model.

[0030] In the figure: 1. Base; 2. Conveyor belt; 3. U-shaped frame; 4. Welding mechanism; 41. Heating tube; 42. Movable tube; 43. First air outlet plate; 44. First air outlet nozzle; 45. Nitrogen delivery pipe; 46. Connecting assembly; 461. First electric push rod; 462. Fixed rod; 5. Driving mechanism; 51. Second electric push rod; 52. Clamping plate; 53. Roller; 54. Sliding hole; 55. Sliding rod; 6. Mounting plate; 7. Second air outlet plate; 8. Fan; 9. Second air outlet nozzle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1 In this embodiment, a circuit board component welding device includes a base 1, a conveyor belt 2 is provided on the upper surface of the base 1, a U-shaped frame 3 is fixed on the upper surface of the conveyor belt 2, and a welding mechanism 4 is provided on the top wall of the inner cavity of the U-shaped frame 3. The welding mechanism 4 can perform conveying welding to improve welding efficiency. A driving mechanism 5 is provided on the left and right sides of the conveyor belt 2 to adjust the position of the circuit board conveyance.

[0033] In this embodiment, a mounting plate 6 is fixed inside the U-shaped frame 3, a second air outlet plate 7 is fixedly mounted on the lower surface of the mounting plate 6, a fan 8 is fixed on the upper surface of the mounting plate 6, the air outlet end of the fan 8 passes through the mounting plate 6 through a pipe and is connected to the upper surface of the second air outlet plate 7, and the lower surface of the second air outlet plate 7 is connected to at least two second air outlet nozzles 9.

[0034] It should be noted that the components and the circuit board are connected by molten solder paste, and the hot-melted circuit board moves with the conveyor belt 2. When the fan 8 is turned on, the fan 8 discharges air and cools it down through the second air outlet plate 7 and no less than two second air outlet nozzles 9, so that the solder paste re-solidifies. At this time, the components and the circuit board can be firmly combined together.

[0035] See also Figure 2-3 In order to perform transfer welding and improve welding efficiency, in this embodiment, the welding mechanism 4 includes three heating cylinders 41, three movable tubes 42, three first air outlet plates 43, at least two first air outlet nozzles 44, three nitrogen delivery pipes 45 and a connecting assembly 46. The three heating cylinders 41 are all fixed on the top wall of the inner cavity of the U-shaped frame 3, the top of the movable tube 42 is connected to the bottom end of the heating cylinder 41, the upper surface of the first air outlet plate 43 is connected to the bottom end of the movable tube 42, and the at least two first air outlet nozzles 44 are all connected to the lower surface of the three first air outlet plates 43. The three nitrogen delivery pipes 45 are all fixed on the upper surface of the U-shaped frame 3 and the bottom ends pass through the U-shaped frame 3 and are all connected to the top ends of the three heating cylinders 41.

[0036] In this embodiment, the top ends of the three nitrogen delivery pipes 45 are connected to the outer nitrogen delivery pipes, and then the circuit board can be placed on the conveyor belt 2 and then transported to the inside of the U-shaped frame 3. The nitrogen inside the three nitrogen delivery pipes 45 flows into the inside of the three heating cylinders 41 and heats them.

[0037] In this embodiment, the connecting component 46 includes two first electric push rods 461 and two fixed rods 462. The two first electric push rods 461 are fixed on the left and right sides of the top wall of the inner cavity of the U-shaped frame 3, and the two fixed rods 462 are fixed on the left and right sides of the upper surface of the three first air outlet plates 43. The outer side of the output shaft of the first electric push rod 461 is fixedly connected to the upper surface of the fixed rod 462. The interior of the heating tube 41 is fixed with no less than two heating wires. By simultaneously starting the first electric push rods 461 on the left and right sides, the three first air outlet plates 43 can be driven to adjust the horizontal height.

[0038] It should be noted that after the nitrogen inside the three heating cylinders 41 is heated, it flows to the inside of the three first air outlet plates 43 through the three movable tubes 42, and then flows out through the first air outlet nozzles 44 connected to no less than two on the lower surfaces of the three first air outlet plates 43, so as to heat the circuit boards transported on the conveyor belt 2. The three heating cylinders 41 are multi-stage heating. The heating temperature inside the front heating cylinder 41 is lower than the heating temperature inside the rear heating cylinder 41. The three first air outlet plates 43 can gradually increase the temperature of the circuit board. When the circuit board reaches the reflow position, the temperature of the nitrogen in the rear first air outlet plate 43 will be significantly higher than before, thereby melting the solder paste that is bonded to the components on the circuit board, and connecting the components to the circuit board through the molten solder paste.

[0039] See also Figure 4 In order to adjust the position of the circuit board conveying, in this embodiment, the driving mechanism 5 includes two second electric push rods 51, two clamping plates 52, no less than two rollers 53, two sliding holes 54 and two sliding rods 55. The second electric push rods 51 are fixed on the left and right sides of the U-shaped frame 3, and the outer side of the output shaft of the second electric push rod 51 passes through the interior of the U-shaped frame 3 and extends to the interior. The outer side of the output shaft of the second electric push rod 51 is slidably connected to the inside of the U-shaped frame 3.

[0040] In this embodiment, the opposite sides of the left and right clamping plates 52 are fixedly connected to the outer sides of the output shafts of the left and right second electric push rods 51, and the opposite sides of the left and right sliding rods 55 are fixedly connected to the opposite sides of the left and right clamping plates 52. There are no less than two rollers 53 that are rotatably connected to the opposite sides of the left and right clamping plates 52. The two sliding holes 54 are both opened on the left and right sides of the U-shaped frame 3. The sliding rod 55 is slidably connected to the inside of the sliding hole 54. The sliding rod 55 moves linearly left and right inside the sliding hole 54, and the gap between the sliding rod 55 and the sliding hole 54 is adapted.

[0041] It should be noted that when the circuit board is being transported on the conveyor belt 2, the second electric push rods 51 on the left and right sides can be started at the same time, and the clamping plates 52 on the left and right sides can be driven to move synchronously in relative directions. Under the action of no less than two rollers 53 on the left and right sides, the position of the circuit board can be adjusted.

[0042] The working principle of the above embodiment is:

[0043] 1. Connect the top ends of the three nitrogen delivery pipes 45 to the nitrogen delivery pipes on the outside, then place the circuit board on the conveyor belt 2, and then transport it to the inside of the U-shaped frame 3. The nitrogen in the three nitrogen delivery pipes 45 flows into the inside of the three heating cylinders 41 and heats it. After the nitrogen in the three heating cylinders 41 is heated, it flows into the inside of the three first air outlet plates 43 through the three movable pipes 42, and then flows out through the lower surfaces of the three first air outlet plates 43, which are connected to the number of at least two first air outlet nozzles 44, so that the circuit board transported on the conveyor belt 2 can be The circuit board is heated, and the three first air outlet plates 43 can gradually increase the temperature of the circuit board. When the circuit board reaches the reflow position, the temperature of the nitrogen in the rear first air outlet plate 43 will be significantly higher than before, thereby melting the solder paste that is bonded to the components on the circuit board, and connecting the components to the circuit board through the molten solder paste. The hot-melt circuit board moves with the conveyor belt 2, and then the fan 8 is turned on, and the fan 8 discharges air and cools it down through the second air outlet plate 7 and at least two second air outlet nozzles 9, so that the solder paste re-solidifies. At this time, the components and the circuit board can be firmly combined together.

[0044] (2) By simultaneously starting the first electric push rods 461 on the left and right sides, the three first air outlet plates 43 can be driven to adjust the horizontal height. When the circuit board is conveyed on the conveyor belt 2, the second electric push rods 51 on the left and right sides can be started at the same time, and the clamping plates 52 on the left and right sides can be driven to move synchronously in relative directions. Under the action of no less than two rollers 53 on the left and right sides, the position of the circuit board conveying can be adjusted.

Claims

1. A circuit board component welding device, comprising a base (1), characterized in that: A conveyor belt (2) is provided on the upper surface of the base (1), a U-shaped frame (3) is fixed on the upper surface of the conveyor belt (2), a welding mechanism (4) is provided on the top wall of the inner cavity of the U-shaped frame (3), and a driving mechanism (5) is provided on the left and right sides of the conveyor belt (2); The welding mechanism (4) comprises three heating cylinders (41), three movable tubes (42), three first air outlet plates (43), at least two first air outlet nozzles (44), three nitrogen delivery pipes (45) and a connecting assembly (46), wherein the three heating cylinders (41) are all fixed on the top wall of the inner cavity of the U-shaped frame (3), the top end of the movable tube (42) is connected to the bottom end of the heating cylinder (41), the upper surface of the first air outlet plate (43) is connected to the bottom end of the movable tube (42), at least two first air outlet nozzles (44) are all connected to the lower surfaces of the three first air outlet plates (43), and the three nitrogen delivery pipes (45) are all fixed on the upper surface of the U-shaped frame (3) and the bottom ends thereof pass through the U-shaped frame (3) and are all connected to the top ends of the three heating cylinders (41).

2. The circuit board component welding device according to claim 1, characterized in that: The connecting assembly (46) includes two first electric push rods (461) and two fixed rods (462), the two first electric push rods (461) are fixed to the left and right sides of the top wall of the inner cavity of the U-shaped frame (3), the two fixed rods (462) are fixed to the left and right sides of the upper surface of the three first air outlet plates (43), and the outer side of the output shaft of the first electric push rod (461) is fixedly connected to the upper surface of the fixed rod (462).

3. The circuit board component welding device according to claim 1, characterized in that: A mounting plate (6) is fixed inside the U-shaped frame (3), a second air outlet plate (7) is fixedly mounted on the lower surface of the mounting plate (6), a fan (8) is fixed on the upper surface of the mounting plate (6), and an air outlet end of the fan (8) passes through the mounting plate (6) through a pipe and is in communication with the upper surface of the second air outlet plate (7).

4. The circuit board component welding device according to claim 3, characterized in that: The lower surface of the second air outlet plate (7) is connected to at least two second air outlet nozzles (9).

5. The circuit board component welding device according to claim 1, characterized in that: The driving mechanism (5) comprises two second electric push rods (51), two clamping plates (52), no less than two rollers (53), two sliding holes (54) and two sliding rods (55), wherein the second electric push rods (51) are fixed to the left and right sides of the U-shaped frame (3), the outer side of the output shaft of the second electric push rod (51) passes through the interior of the U-shaped frame (3) and extends to the interior, and the outer side of the output shaft of the second electric push rod (51) is slidably connected to the interior of the U-shaped frame (3).

6. The circuit board component welding device according to claim 5, characterized in that: The opposite sides of the left and right clamping plates (52) are fixedly connected to the outer sides of the output shafts of the left and right second electric push rods (51), and the opposite sides of the left and right sliding rods (55) are fixedly connected to the opposite sides of the left and right clamping plates (52). The rollers (53) of at least two are rotatably connected to the opposite sides of the left and right clamping plates (52). The two sliding holes (54) are both opened on the left and right sides of the U-shaped frame (3), and the sliding rods (55) are slidably connected inside the sliding holes (54).

7. The circuit board component welding device according to claim 5, characterized in that: The sliding rod (55) moves linearly left and right inside the sliding hole (54), and the gap between the sliding rod (55) and the sliding hole (54) is adapted.

8. The circuit board component welding device according to claim 1, characterized in that: No less than two heating wires are fixed inside the heating cylinder (41).

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