Circuit board soldering automatic nitrogen generation apparatus

Abstract

This utility model relates to the field of nitrogen generator technology, and in particular to an automatic nitrogen generator for circuit board soldering, comprising a frame and a noise reduction component. A mounting bracket is provided above the frame, and a nitrogen generator is fixedly connected to the inner wall of the mounting bracket. The noise reduction component includes two symmetrically arranged crossbeams, two symmetrically arranged guide rods, and two symmetrically arranged connecting seats. The ends of the two crossbeams are respectively fixedly connected to the inner wall of the frame, and the ends of the guide rods pass through the crossbeams and are fixedly connected to them. Each guide rod end is fitted with two first buffer springs. In this utility model, the noise reduction component utilizes the elastic deformation of the first and second buffer springs to absorb the vibration generated by the nitrogen generator, which is more effective in mitigating high-frequency vibrations compared to traditional rubber pads. Simultaneously, the structural design of the connecting arm, connecting seat, and guide rods ensures that vibrations are transmitted to the damping components in an orderly manner, improving the stability of the structure.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen generation equipment technology, and more specifically, to an automatic nitrogen generation device for circuit board welding. Background Technology

[0002] A nitrogen generator is a device that uses technologies such as pressure swing adsorption to produce nitrogen from the air. In the process of circuit board soldering, the nitrogen generated by the nitrogen generator is mainly used to create an oxygen-free or low-oxygen environment, reduce the oxidation of metals during the soldering process, improve the soldering quality, and prevent defects such as cold solder joints and porosity.

[0003] However, existing automatic nitrogen generators with circuit board soldering typically use rubber pads or other vibration-damping materials at the bottom of the generator to prevent noise caused by vibration during operation. However, this method has limited effectiveness and cannot fundamentally alleviate the high-frequency vibrations generated during operation. As the equipment ages and deforms, the rubber pads further reduce their damping effect, leading to increased noise. Utility Model Content

[0004] Based on the aforementioned existing automatic nitrogen generators for circuit board welding, to prevent noise caused by vibration during operation, damping materials such as rubber pads are typically installed at the bottom of the nitrogen generator. However, this damping method has limited effectiveness and cannot fundamentally alleviate the high-frequency vibrations generated during nitrogen generator operation. As the equipment is used for a longer period, the rubber pads age and deform, further reducing their damping effect and leading to noise generation. Therefore, this utility model proposes an automatic nitrogen generator for circuit board welding.

[0005] This utility model proposes an automatic nitrogen generator for circuit board welding, comprising a frame and a noise reduction component: A mounting frame is provided above the frame, and a nitrogen generator is fixedly connected to the inner wall of the mounting frame. The noise reduction assembly includes two symmetrically arranged crossbeams, two symmetrically arranged guide rods, and two symmetrically arranged connecting seats. The ends of the two crossbeams are fixedly connected to the inner wall of the frame, and the ends of the guide rods pass through the crossbeams and are fixedly connected to them. Each end of the guide rod is fitted with two first buffer springs, and each end of the guide rod is slidably connected to a support. Each end of the guide rod is fixedly connected to a first limiting sleeve. The support is located between the two first buffer springs at the end of the guide rod. Each support has a connecting arm rotatably connected to its inner wall. The connecting seat is fixedly connected to the bottom of the mounting frame, and both ends of the connecting seat are rotatably connected to the connecting arm.

[0006] Preferably, the two ends of the first buffer spring near the crossbeam abut against the support and the crossbeam respectively, and the two ends of the first buffer spring away from the crossbeam abut against the support and the first limiting sleeve respectively.

[0007] Preferably, support rods are fixedly connected to the four corners of the top of the frame, and two second buffer springs are sleeved on the outer wall of each support rod. Two second limiting sleeves are fixedly connected to the outer wall of each support rod. Two mounting frames are provided on the top of the frame. The two ends of each mounting frame are slidably connected to the end of the mounting bracket. The top of each support rod passes through the corresponding mounting frame and is slidably connected to it.

[0008] Preferably, one end of the second buffer spring abuts against the second limiting sleeve, and the other end of the second buffer spring abuts against the mounting frame.

[0009] Preferably, the inner wall of the frame is rotatably connected to two drive shafts, the ends of which penetrate the frame and extend to its outer side. The outer end walls of the drive shafts are rotatably connected to two second bushings, and a connecting shaft is rotatably connected between the two second bushings. The two ends of the connecting shaft and the ends of the two drive shafts are fixedly connected to two second bevel gears, and the two second bevel gears on the connecting shaft and the drive shaft mesh with each other.

[0010] Preferably, a stepper motor is fixedly connected to the outer wall of the frame, and the output end of the stepper motor is fixedly connected to the end of one of the drive shafts.

[0011] Preferably, two output shafts are rotatably connected to both sides of the frame, and the ends of the output shafts penetrate the frame and extend to its inner side. The ends of the output shafts located inside the frame and the outer walls of the drive shafts near both ends are equipped with first bevel gears, and the first bevel gears at the ends of the drive shafts and the output shafts mesh with each other.

[0012] Preferably, the outer wall of the drive shaft is rotatably connected to two first bushings, and the first bushings are rotatably connected to the output shaft respectively.

[0013] Preferably, each output shaft is fixedly connected to a mounting plate at the outer end of the frame, and each mounting plate is rotatably connected to a bracket at its bottom, with rollers rotatably connected to the inner wall of the bracket.

[0014] The beneficial effects of this utility model, achieved through the above technical solution, are as follows: 1. The noise reduction component utilizes the elastic deformation of the first and second buffer springs to absorb the vibration generated by the nitrogen generator. Compared with traditional rubber pads, it can more effectively alleviate high-frequency vibration. At the same time, the structural design of the connecting arm, connecting seat, guide rod, etc., allows the vibration to be transmitted to the vibration damping components in an orderly manner, improving the stability of the structure.

[0015] 2. The mounting frame and the mounting bracket are slidably connected, so that the vibration of the mounting bracket can be transmitted to the second buffer spring. When the second buffer spring is compressed by vibration, it further absorbs the vibration energy.

[0016] 3. The stepper motor drives multiple drive shafts and output shafts to rotate synchronously. When the output shaft rotates, it drives the mounting plate to rotate, the bracket and the rollers to rotate, causing the two rollers on the same side to flip outward until the bottom of the frame falls to the ground, and then the rollers are stored. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the mounting structure of the mounting bracket of this utility model; Figure 3 This is a schematic diagram of the installation structure of the guide rod of this utility model; Figure 4 This is a schematic diagram of the installation structure of the drive shaft of this utility model; Figure 5 This is a schematic diagram of the installation structure of the roller of this utility model.

[0018] In the diagram: 1. Frame; 2. Mounting bracket; 3. Connecting seat; 4. Connecting arm; 5. Guide rod; 6. Crossbeam; 7. First buffer spring; 8. Support; 9. First limiting sleeve; 10. Nitrogen generator; 11. Mounting frame; 12. Support rod; 13. Second limiting sleeve; 14. Second buffer spring; 15. Stepper motor; 16. Drive shaft; 17. Output shaft; 18. Mounting plate; 19. Bracket; 20. Roller; 21. First bevel gear; 22. First bushing; 23. Connecting shaft; 24. Second bushing; 25. Second bevel gear. Detailed Implementation

[0019] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figures 1-3 As shown, an automatic nitrogen generator for circuit board welding includes a frame 1 and a noise reduction component: a mounting frame 2 is provided above the frame 1, and a nitrogen generator 10 is fixedly connected to the inner wall of the mounting frame 2; The noise reduction assembly includes two symmetrically arranged crossbeams 6, two symmetrically arranged guide rods 5, and two symmetrically arranged connecting seats 3. The ends of the two crossbeams 6 are fixedly connected to the inner wall of the frame 1, and the ends of the guide rods 5 pass through the crossbeams 6 and are fixedly connected to them. Two first buffer springs 7 are sleeved on the ends of the guide rods 5. Supports 8 are slidably connected to the ends of the guide rods 5. First limiting sleeves 9 are fixedly connected to the ends of the guide rods 5. The supports 8 are located between the two first buffer springs 7 at the ends of the guide rods 5. Connecting arms 4 are rotatably connected to the inner wall of the supports 8. The connecting seats 3 are fixedly connected to the bottom of the mounting frame 2. The two ends of the connecting seats 3 are rotatably connected to the connecting arms 4, respectively. The two ends of the first buffer springs 7 closer to the crossbeams 6 abut against the supports 8 and the crossbeams 6, respectively. The two ends of the first buffer springs 7 farther from the crossbeams 6 abut against the supports 8 and the first limiting sleeves 9, respectively.

[0021] Traditional equipment uses rubber pads for vibration damping, which has limited effectiveness and is prone to aging and failure. In this device, the first buffer spring 7 absorbs the vibration energy generated by the nitrogen generator 10 through elastic deformation. Compared with traditional rubber pads, its vibration damping effect is more significant and can effectively alleviate high-frequency vibration. The connecting arm 4 and the connecting seat 3 connect the mounting frame 2 and the support 8, so that the vibration can be smoothly transmitted to the vibration damping components. Structurally, this suppresses the vibration of the nitrogen generator 10 and reduces noise generation.

[0022] In this embodiment, as Figure 2 As shown, support rods 12 are fixedly connected to the four corners of the top of the frame 1. Two second buffer springs 14 are sleeved on the outer wall of each support rod 12. Two second limiting sleeves 13 are fixedly connected to the outer wall of the support rod 12. Two mounting frames 11 are provided on the top of the frame 1. The two ends of the mounting frames 11 are slidably connected to the ends of the mounting frame 2. The top of the support rods 12 passes through the corresponding mounting frames 11 and is slidably connected to them. One end of the second buffer spring 14 abuts against the second limiting sleeve 13, and the other end of the second buffer spring 14 abuts against the mounting frame 11.

[0023] The support rod 12 provides guidance for the mounting frame 11. The mounting frame 11 is slidably connected to the mounting bracket 2, so that the vibration of the mounting bracket 2 can be transmitted to the second buffer spring 14. When the second buffer spring 14 is compressed by vibration, it further absorbs the vibration energy and forms a double shock absorption with the first buffer spring 7, which enhances the shock absorption effect, further reduces the vibration and noise generated by the nitrogen generator 10 during operation, and improves the stability of equipment operation.

[0024] In this embodiment, as Figure 4 and Figure 5As shown, two drive shafts 16 are rotatably connected to the inner wall of the frame 1. The ends of the drive shafts 16 penetrate the frame 1 and extend to its outer side. Two second bushings 24 are rotatably connected to the outer end walls of the drive shafts 16. A connecting shaft 23 is rotatably connected between the two second bushings 24. Two second bevel gears 25 are fixedly connected to both ends of the connecting shaft 23 and the ends of the two drive shafts 16. The two second bevel gears 25 on the connecting shaft 23 and the drive shaft 16 mesh with each other. A stepper motor 15 is fixedly connected to the outer wall of the frame 1. The output end of the stepper motor 15 is fixedly connected to the end of one of the drive shafts 16.

[0025] Two output shafts 17 are rotatably connected to both sides of the frame 1. The ends of the output shafts 17 pass through the frame 1 and extend to its inner side. The ends of the output shafts 17 inside the frame 1 and the outer walls of the drive shafts 16 near both ends are equipped with first bevel gears 21. The first bevel gears 21 at the ends of the drive shafts 16 and the output shafts 17 mesh with each other.

[0026] Two first bushings 22 are rotatably connected to the outer wall of the drive shaft 16, and the first bushings 22 are rotatably connected to the output shaft 17 respectively.

[0027] The output shaft 17 is fixedly connected to the outer end of the frame 1 with a mounting plate 18. The bottom of the mounting plate 18 is rotatably connected to a bracket 19. The inner wall of the bracket 19 is rotatably connected to a roller 20.

[0028] Working principle: When the nitrogen generator 10 is running, the vibration generated by the nitrogen generator 10 is first transmitted to the mounting frame 2. The mounting frame 2 transmits the vibration to the support 8 through the connecting seat 3 and the connecting arm 4. At this time, the support 8 slides on the guide rod 5, compressing the first buffer springs 7 at both ends, and using the elastic deformation of the first buffer springs 7 for buffering. Simultaneously, under vibration, the mounting bracket 2 will cause the mounting frame 11 to slide on the support rod 12, compressing the second buffer spring 14, which further cushions the noise. Through the buffering effect of the noise reduction component, the noise generated by the nitrogen generator 10 during operation is reduced. When the equipment is installed, the stepper motor 15 is started, which drives the drive shaft 16 connected to it to rotate. The drive shaft 16 meshes with the first bevel gear 21 at the end of the output shaft 17 through the first bevel gear 21 at the end, and transmits power to the output shaft 17. At the same time, the second bevel gear 25 at the end of the drive shaft 16 meshes with the second bevel gear 25 at the end of the connecting shaft 23, so as to realize the synchronous rotation of multiple drive shafts 16 and output shaft 17. When the output shaft 17 rotates, it drives the mounting plate 18 to rotate, the bracket 19 and the rollers 20 to rotate, so that the two rollers 20 on the same side flip outward until the bottom of the frame 1 falls to the ground, and then the rollers 20 are stored.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A circuit board soldering automatic nitrogen generating apparatus, characterized by comprising: include: A frame (1) is provided above the frame (1), and a mounting frame (2) is fixedly connected to the inner wall of the mounting frame (2). Noise reduction components, including: Two symmetrically arranged crossbeams (6) are fixedly connected at their ends to the inner wall of the frame (1); Two symmetrically arranged guide rods (5) are provided. The ends of the guide rods (5) pass through the crossbeam (6) and are fixedly connected to it. Two first buffer springs (7) are sleeved on the ends of the guide rods (5). Supports (8) are slidably connected to the ends of the guide rods (5). First limiting sleeves (9) are fixedly connected to the ends of the guide rods (5). The supports (8) are located between the two first buffer springs (7) at the ends of the guide rods (5). Connecting arms (4) are rotatably connected to the inner walls of the supports (8). Two symmetrically arranged connecting seats (3) are fixedly connected to the bottom of the mounting frame (2), and the two ends of the connecting seats (3) are rotatably connected to the connecting arms (4).

2. The circuit board soldering automatic nitrogen generating apparatus according to claim 1, characterized by: The two ends of the first buffer spring (7) near the crossbeam (6) abut against the support (8) and the crossbeam (6) respectively, and the two ends of the first buffer spring (7) away from the crossbeam (6) abut against the support (8) and the first limiting sleeve (9) respectively.

3. The circuit board soldering auto nitrogen generating apparatus according to claim 2, characterized by: Support rods (12) are fixedly connected to the four corners of the top of the frame (1). Two second buffer springs (14) are sleeved on the outer wall of the support rods (12). Two second limiting sleeves (13) are fixedly connected to the outer wall of the support rods (12). Two mounting frames (11) are provided on the top of the frame (1). The two ends of the mounting frames (11) are slidably connected to the ends of the mounting brackets (2). The top of the support rods (12) passes through the corresponding mounting frames (11) and is slidably connected to them.

4. The circuit board soldering automatic nitrogen generating apparatus according to claim 3, characterized by: One end of the second buffer spring (14) abuts against the second limiting sleeve (13), and the other end of the second buffer spring (14) abuts against the mounting frame (11).

5. The circuit board soldering automatic nitrogen generating apparatus according to claim 4, characterized by: The inner wall of the frame (1) is rotatably connected to two drive shafts (16). The ends of the drive shafts (16) penetrate the frame (1) and extend to its outer side. The outer end walls of the drive shafts (16) are rotatably connected to two second bushings (24). A connecting shaft (23) is rotatably connected between the two second bushings (24). The two ends of the connecting shaft (23) and the ends of the two drive shafts (16) are fixedly connected to second bevel gears (25). The two second bevel gears (25) on the connecting shaft (23) and the drive shaft (16) mesh with each other.

6. The circuit board soldering auto nitrogen generating apparatus according to claim 5, characterized by: A stepper motor (15) is fixedly connected to the outer wall of the frame (1), and the output end of the stepper motor (15) is fixedly connected to the end of one of the drive shafts (16).

7. The circuit board soldering auto nitrogen generating apparatus according to claim 6, characterized by: The frame (1) has two output shafts (17) rotatably connected on both sides. The ends of the output shafts (17) penetrate the frame (1) and extend to its inner side. The ends of the output shafts (17) inside the frame (1) and the outer walls of the drive shaft (16) near both ends are equipped with first bevel gears (21). The first bevel gears (21) at the ends of the drive shaft (16) and the output shafts (17) mesh with each other.

8. The circuit board soldering auto nitrogen generating apparatus according to claim 7, characterized by: The outer wall of the drive shaft (16) is rotatably connected to two first bushings (22), and the first bushings (22) are rotatably connected to the output shaft (17).

9. The circuit board soldering auto nitrogen generating apparatus according to claim 8, characterized by: The output shaft (17) is fixedly connected to the outer end of the frame (1) with a mounting plate (18), and the bottom of the mounting plate (18) is rotatably connected to a bracket (19), and the inner wall of the bracket (19) is rotatably connected to a roller (20).

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