Auxiliary welding device for pcb (printed circuit board) bonding pad

Abstract

The utility model relates to the technical field of pcb bonding pad welding, in particular to a pcb bonding pad welding auxiliary device which comprises an installation frame, a servo motor and an electric push rod, the servo motor and the electric push rod are fixedly installed on the two sides of the installation frame respectively, and a first clamping frame and a second clamping frame are arranged on output shafts of the servo motor and the electric push rod respectively. The inner side of the first clamping frame and the inner side of the second clamping frame are each provided with an elastic clamping module, the positioning module comprises I-shaped sliding blocks arranged on the first clamping frame and the second clamping frame, according to the pcb bonding pad welding auxiliary device, when a pressing plate is pressed to move downwards, ratchets of a ratchet bar are interfered by an interference strip, shrinkage deformation can happen, and therefore the positioning module can be used for positioning the pcb bonding pad. When ratchets of the ratchet bar cross the interference bar, the pressing plate can be reset, when the pressing plate stops moving, the pressing plate can be reset under the action of the reset spring, but at the moment, the ratchet bar can be interfered by the interference bar to prevent the ratchet bar from being reset, so that the purpose of self-locking is achieved, and the component is continuously positioned.

Description

Technical Field

[0001] This utility model relates to the field of PCB pad soldering technology, specifically to an auxiliary device for PCB pad soldering. Background Technology

[0002] Pads are the basic building blocks of surface mount assembly, and they are divided into surface mount type and through-hole type. When connecting components with through-hole pads, wave soldering is usually used. However, there are certain limitations on the height of electronic components during wave soldering. If the component size is too large, it will not be able to be soldered by wave soldering. Or, if the electronic component is inserted too close to the edge of the board, it will touch the edge of the device and affect the normal soldering. Therefore, some components are suitable for manual soldering.

[0003] In manual soldering, components must first be inserted into through-hole pads, and then soldered from the back of the circuit board. To improve work efficiency, workers often use their hands to directly hold the components from the back of the circuit board, i.e., the bottom, and then solder them directly. However, some molten solder drips from the through-holes, causing injury to the worker's hands. Therefore, a PCB pad soldering auxiliary device is proposed here to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a PCB pad soldering auxiliary device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PCB pad soldering auxiliary device, comprising a mounting frame and a servo motor and an electric push rod respectively fixedly mounted on both sides of the mounting frame. A first clamping frame and a second clamping frame are respectively provided on the output shafts of the servo motor and the electric push rod. An elastic clamping module is provided on the inner side of both the first and second clamping frames. The device also includes:

[0006] The positioning module includes an I-shaped slider disposed on a first clamping frame and a second clamping frame, and a guide post fixedly mounted on the I-shaped slider. A pressure plate is disposed on the outer surface of the guide post, and a spring post is disposed on the pressure plate. By pressing the pressure plate, the spring post positions the component.

[0007] Optionally, the elastic clamping module includes telescopic springs fixedly installed on the upper and lower sides of the inner cavities of the first and second clamping frames, and a clamping plate fixedly connected to the other end of the telescopic springs.

[0008] Optionally, a self-locking assembly is also included, which includes a ratchet rack fixedly installed on one side of the I-shaped slider, and a second adjustment groove opened inside the pressure plate, wherein an interference bar is movably disposed in the second adjustment groove.

[0009] Optionally, the bottom of the I-shaped slider is fixedly mounted with a mounting column, and the two mounting columns are respectively movably equipped with a support and a lighting lamp.

[0010] Optionally, a collection box is fixedly installed on the surface of one side of the I-shaped slider, and the panels on both sides of the collection box are detachably connected to the main body.

[0011] Optionally, a first sliding frame is fixedly installed at both ends of the second clamping frame, and a second sliding frame is fixedly installed at both ends of the first clamping frame, with the first sliding frame and the second sliding frame being movably connected.

[0012] This utility model provides a PCB pad soldering auxiliary device, which has the following beneficial effects:

[0013] 1. This PCB pad soldering auxiliary device uses two bent clamps to facilitate inserting the circuit board between the two clamps when clamping a thicker circuit board, and causes the telescopic spring to deform, thereby adapting to circuit boards of different sizes.

[0014] 2. This PCB pad soldering auxiliary device, when the pressure plate is pressed down and moved downwards, the ratchet teeth of the ratchet are interfered with by the interference bar, causing them to shrink and deform, thus allowing the pressure plate to continue moving downwards. When the ratchet teeth pass the interference bar, they will reset. When the pressure plate stops moving, it will reset under the action of the reset spring. However, at this time, the ratchet will be interfered with by the interference bar, preventing it from resetting, thereby achieving the purpose of self-locking and continuously positioning the components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 3 ;

[0018] Figure 4 This is a three-dimensional exploded view of the clamping component and positioning component of this utility model;

[0019] Figure 5 This is a partial structural diagram of the positioning component of this utility model. Figure 1 ;

[0020] Figure 6 This is a partial structural diagram of the positioning component of this utility model. Figure 2 .

[0021] In the diagram: 1. Mounting bracket; 2. Servo motor; 21. First clamping frame; 22. Electric push rod; 23. Second clamping frame; 3. Telescopic spring; 31. Clamping plate; 4. Moving groove; 41. I-shaped slider; 42. First positioning bolt; 43. Guide post; 44. Limiting block; 45. Return spring; 46. Pressure plate; 47. First adjusting groove; 48. Mounting hole; 49. Spring post; 5. Ratchet; 51. Second adjusting groove; 52. Interference bar; 53. Second positioning bolt; 6. Mounting post; 61. Support component; 62. Lighting lamp; 63. Collection box; 7. First sliding frame; 71. Second sliding frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Please refer to Figures 1 to 6 This utility model provides a technical solution: a PCB pad soldering auxiliary device, including a mounting frame 1 and a servo motor 2 and an electric push rod 22 respectively fixedly mounted on both sides of the mounting frame 1. A first clamping frame 21 and a second clamping frame 23 are respectively provided on the output shafts of the servo motor 2 and the electric push rod 22. An elastic clamping module is provided on the inner side of both the first clamping frame 21 and the second clamping frame 23. The device also includes:

[0024] The positioning module includes an I-shaped slider 41 disposed on the first clamping frame 21 and the second clamping frame 23, and a guide post 43 fixedly installed on the I-shaped slider 41. A pressure plate 46 is disposed on the outer surface of the guide post 43, and a spring post 49 is disposed on the pressure plate 46. By pressing the pressure plate 46, the spring post 49 positions the component.

[0025] The elastic clamping module includes telescopic springs 3 fixedly installed on the upper and lower sides of the inner cavity of the first clamping frame 21 and the second clamping frame 23, and a clamping plate 31 fixedly connected to the other end of the telescopic springs 3.

[0026] Specifically, the first clamping frame 21 is fixedly connected to the output shaft of the servo motor 2, and the second clamping frame 23 is movably connected to the output shaft of the electric push rod 22. When the servo motor 2 is started, the first clamping frame 21 and the second clamping frame 23 can drive the circuit board to flip. Before use, the user needs to insert one end of the circuit board between the two clamping plates 31, and then start the electric push rod 22 according to the size of the circuit board to adjust the distance between the first clamping frame 21 and the second clamping frame 23 until it matches the size of the circuit board. One side of the clamping plate 31 is bent, which makes it easier to insert the circuit board between the two clamping plates 31 when clamping a thicker circuit board, and causes the telescopic spring 3 to deform, thereby adapting to circuit boards of different sizes. The deformation of the telescopic spring 3 can reduce the mechanical stress damage caused by the clamping plate 31 to the circuit board.

[0027] Furthermore, after the circuit board is clamped, the components need to be inserted into the through holes of the pads. The positioning module also includes a moving groove 4 opened on the first clamping frame 21 and the second clamping frame 23. The I-shaped slider 41 is movably installed in the moving groove 4. By moving the I-shaped slider 41, the spring column 49 is moved above the component. The I-shaped slider 41 is also threaded with a first positioning bolt 42 for limiting the I-shaped slider 41. The middle part of the pressure plate 46 has a first adjustment groove 47 on both sides that matches the guide post 43 for installing it on the outer surface of the guide post 43 and adjusting the applicable length according to the size of the circuit board. The top of the guide post 43 is threaded with a limiting block 44 with a diameter larger than the diameter of the guide post 43. The pressure plate 46 also has a mounting hole 48. The spring column 49 is snapped into the mounting hole 48 to facilitate adjusting the position of the spring column 49 according to the position of the component. When the pressure plate 46 is pressed, the spring column 49 can accurately position the component.

[0028] Example 2: Please refer to Figures 3 to 6 It also includes a self-locking component, which includes a ratchet 5 fixedly installed on one side of the I-shaped slider 41, and a second adjustment groove 51 opened inside the pressure plate 46, in which an interference bar 52 is movably arranged.

[0029] Specifically, the ratchet 5 is located below the first adjustment groove 47 and its width is greater than that of the first adjustment groove 47. Before use, the interference bar 52 needs to be inserted into the second adjustment groove 51. The interference bar 52 is also threaded with a second positioning bolt 53. When the second positioning bolt 53 is tightened, it abuts tightly against the pressure plate 46 to limit the interference bar 52. At this time, the other end of the interference bar 52 is located in the middle of the ratchet teeth of the ratchet 5. When the pressure plate 46 is pressed down, the ratchet teeth of the ratchet 5 are interfered with by the interference bar 52 and will shrink and deform, so that the pressure plate 46 continues to move downward. When the ratchet teeth of the ratchet 5 pass the interference bar 52, it will reset. When the pressure plate 46 stops moving, it will reset under the action of the reset spring 45. However, at this time, the ratchet 5 will be interfered with by the interference bar 52, preventing it from resetting, thereby achieving the purpose of self-locking and continuously positioning the component.

[0030] Example 3: Please refer to Figure 1 and Figure 2 The bottom of the I-shaped slider 41 is fixedly installed with mounting posts 6, and the two mounting posts 6 are respectively movably equipped with support members 61 and lighting lamps 62.

[0031] A collection box 63 is fixedly installed on the surface of one side of the I-shaped slider 41, and the panels on both sides of the collection box 63 are detachably connected to the main body.

[0032] The first sliding frame 7 is fixedly installed at both ends of the second clamping frame 23, and the second sliding frame 71 is fixedly installed at both ends of the first clamping frame 21. The first sliding frame 7 and the second sliding frame 71 are movably connected.

[0033] Specifically, after the components are positioned, the servo motor 2 is activated to rotate the first clamping frame 21. Under the action of the first sliding frame 7 and the second sliding frame 71, the second clamping frame 23 will rotate accordingly, avoiding damage to the circuit board caused by relying on the circuit board to rotate the second clamping frame 23. After rotation, the support 61 and the lighting lamp 62 face upward. Since the support 61 and the lighting lamp 62 will move when the I-shaped slider 41 moves, the position of the support 61 and the lighting lamp 62 after rotation is the position that needs to be soldered. The lighting lamp 62 illuminates the arm and the support 61 supports the arm to assist the user in soldering. The collection box 63 can be used to collect excess solder when there is too much solder. When the collected amount increases, it can be disassembled, heated, and then cooled to make the solder inside into a long strip. Then the panels on both sides of the collection box 63 are disassembled, the solder strip is taken out, and after cutting, it can be reused.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCB pad soldering auxiliary device, comprising a mounting frame (1) and a servo motor (2) and an electric push rod (22) respectively fixedly mounted on both sides of the mounting frame (1), wherein a first clamping frame (21) and a second clamping frame (23) are respectively provided on the output shafts of the servo motor (2) and the electric push rod (22), and an elastic clamping module is provided on the inner side of both the first clamping frame (21) and the second clamping frame (23), characterized in that: Also includes: The positioning module includes an I-shaped slider (41) disposed on the first clamping frame (21) and the second clamping frame (23), and a guide post (43) fixedly installed on the I-shaped slider (41). The outer surface of the guide post (43) is provided with a pressure plate (46), and a spring post (49) is provided on the pressure plate (46). By pressing the pressure plate (46), the spring post (49) positions the component.

2. The PCB pad soldering auxiliary device according to claim 1, characterized in that: The elastic clamping module includes a telescopic spring (3) fixedly installed on the upper and lower sides of the inner cavity of the first clamping frame (21) and the second clamping frame (23), and a clamping plate (31) fixedly connected to the other end of the telescopic spring (3).

3. The PCB pad soldering auxiliary device according to claim 1, characterized in that: It also includes a self-locking component, which includes a ratchet (5) fixedly installed on one side of the I-shaped slider (41) and a second adjustment groove (51) opened inside the pressure plate (46), in which an interference bar (52) is movably arranged.

4. The PCB pad soldering auxiliary device according to claim 1, characterized in that: The bottom of the I-shaped slider (41) is fixedly installed with a mounting column (6), and the two mounting columns (6) are respectively movably provided with a support (61) and a lighting lamp (62).

5. The PCB pad soldering auxiliary device according to claim 1, characterized in that: A collection box (63) is fixedly installed on the surface of the I-shaped slider (41) on one side, and the panels on both sides of the collection box (63) are detachably connected to the main body.

6. The PCB pad soldering auxiliary device according to claim 1, characterized in that: The second clamping frame (23) is fixedly installed with a first sliding frame (7) at both ends, and the first clamping frame (21) is fixedly installed with a second sliding frame (71) at both ends, and the first sliding frame (7) and the second sliding frame (71) are movably connected.

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