A reflow soldering jig

Abstract

The utility model belongs to the technical field of electronic manufacturing equipment, disclose a kind of tooling fixture for reflow soldering, including base, base is connected with magnetic suction loading plate, and magnetic suction loading plate is adsorbed with fixture, and fixture is equipped with large plate welding interface and small plate placing port, and magnetic suction loading plate is adsorbed with cover plate, and cover plate is matched with small plate placing port, base is equipped with mounting groove, and movable plate is slidably connected in mounting groove inner wall, and movable plate is connected with positioning pin one and positioning pin two, and magnetic suction loading plate is equipped with through hole one and through hole two, and through hole one and through hole two are matched with positioning pin one and positioning pin two respectively, and fixture is equipped with positioning hole, and positioning hole is matched with positioning pin one, and base is connected with lifting mechanism.The utility model can accurately adapt to reflow soldering process requirement, optimize the heat conduction path of welding area, concentrate heat on welding point, realize the efficient, reliable application of reflow soldering process in large and small plate welding.

Description

Technical Field

[0001] This utility model relates to the field of electronic manufacturing equipment technology, and in particular to a tooling fixture for reflow soldering. Background Technology

[0002] Large boards and small boards are common forms of printed circuit boards (PCBs) in the electronics manufacturing industry. Large boards are usually larger in size and have complex circuit layouts. As the core carrier, they integrate key components such as processors and power modules and carry the main functions of the system. Small boards are smaller in size and have relatively simple functions, such as camera module boards and sensor boards. They are used to realize specific functions or as a supplementary sub-module. The two are combined by soldering to work together to complete the operation of complex electronic systems and are widely used in mobile phones, computers, industrial control and other equipment.

[0003] Currently, pressure welding is mainly used to weld large and small boards. This requires welding each weld point individually, which is slow and inefficient for the large number of weld points on the large board. Furthermore, after welding the weld points on the large and small boards separately, the boards must be welded together, making the process cumbersome. This not only increases the number of steps and time costs but also introduces more error risks due to multiple positioning and operations, resulting in low overall production efficiency and difficulty in improving yield. Utility Model Content

[0004] The present invention aims to provide a tooling fixture for reflow soldering to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A reflow soldering fixture includes a base, a magnetic carrier plate connected to the base, a jig held in place by the magnetic carrier plate, a large plate welding port and a small plate placement port on the jig, a cover plate held in place by the magnetic carrier plate, the cover plate engaging with the small plate placement port, a mounting groove on the base, a movable plate slidably connected to the inner wall of the mounting groove, a positioning pin 1 and a positioning pin 2 connected to the movable plate, a through hole 1 and a through hole 2 on the magnetic carrier plate, the through hole 1 and the through hole 2 engaging with the positioning pin 1 and the positioning pin 2 respectively, a positioning hole on the jig, a positioning hole engaging with the positioning pin 1, and a lifting mechanism connected to the base for lifting the movable plate.

[0007] Preferably, the lifting mechanism includes a moving block, a threaded rod rotatably connected to the base, a motor connected to the base, the output end of the motor rotatably connected to the threaded rod, the moving block being threadedly connected to the threaded rod, the moving block being slidably connected to the mounting groove, the moving block having an inclined surface one, the moving plate having an inclined surface two, and the inclined surface one abutting against the inclined surface two.

[0008] Preferably, the length of the first positioning pin is greater than that of the second positioning pin.

[0009] Preferably, the fixture is connected to a handle.

[0010] Preferably, the base is connected to a placement frame.

[0011] Preferably, the base is connected to an anti-slip pad.

[0012] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0013] (1) This technical solution, by setting up a fixture, a large board welding port, a small board placement port, and a cover plate, can accurately adapt to the requirements of the reflow soldering process. It can prevent solder paste from splashing onto the non-welding areas of the large and small boards at high temperatures, avoiding component short circuits or solder contamination. Furthermore, the fixture and shielding plate shield the non-welding points of the large and small boards, reducing the impact of heat on surrounding precision components and lowering the risk of failure of heat-sensitive components. At the same time, it optimizes the heat conduction path in the welding area, concentrating heat on the solder joints, improving the uniformity of solder paste melting, and reducing defects such as cold solder joints and bridging. This enables the efficient and reliable application of the reflow soldering process in the welding of large and small boards. By setting up a magnetic carrier plate, positioning pin one, and positioning pin two, the large and small boards and fixture can be quickly and accurately fixed, avoiding displacement during welding, ensuring accurate alignment of solder joints and pads, and reducing defects such as cold solder joints and bridging.

[0014] (2) By setting a threaded rod, a motor, a moving block, an inclined surface one and an inclined surface two, the rotational motion is converted into the linear motion of the moving block. Then, through the sliding contact between the inclined surface one and the inclined surface two, the moving plate can be raised and lowered smoothly. No additional air source or hydraulic system is required. The structure is more compact and can effectively reduce the overall volume of the tooling fixture and improve the utilization rate of the equipment.

[0015] (3) By designing that the length of the first positioning pin is greater than that of the second positioning pin, the positioning pin 2 is prevented from affecting the positioning of the fixture.

[0016] (4) By setting handles, operators are provided with stable and labor-saving force points. Whether it is moving the fixture or making precise positioning and adjustment during use, it can be completed more easily, reducing physical exertion and operational errors, and improving operational convenience and safety.

[0017] (5) By setting up placement frames, dedicated storage space can be provided for workpieces, tools or accessories to be processed, avoiding clutter and loss caused by random placement of items, and improving the storage organization and ease of use of the equipment.

[0018] (6) By setting anti-slip pads, the friction between the base and the contact surface can be increased, preventing the equipment from shifting due to external collisions, vibrations or shaking during use, ensuring that the equipment always maintains a fixed position and avoiding the impact of positional deviation on the accuracy of operation. Attached Figure Description

[0019] Figure 1 This is a front view of the present invention;

[0020] Figure 2 This is a front sectional view of the present invention;

[0021] Figure 3 This is a top view of the present invention;

[0022] Reference numerals in the attached drawings: 1. Base; 2. Fixture; 3. Magnetic carrier plate; 4. Placement frame; 5. Handle; 6. Anti-slip pad; 7. Motor; 8. Mounting slot; 9. Moving plate; 10. Positioning pin one; 11. Through hole one; 12. Positioning hole two; 13. Positioning pin two; 14. Inclined surface two; 15. Threaded rod; 16. Moving block; 17. Inclined surface one; 18. Large plate welding joint; 19. Small plate placement opening; 20. Cover plate; 21. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0024] like Figure 1-3The reflow soldering fixture shown includes a base 1, with an anti-slip pad 6 connected to the bottom wall of the base 1 and a placement frame 4 connected to the front side wall of the base 1. A magnetic carrier plate 3 is connected to the top of the base 1, and a jig 2 is attached to the top wall of the magnetic carrier plate 3. Handles 5 are connected to the left and right sides of the jig 2. The jig 2 has several sets of large plate welding ports 19 and small plate placement ports 20. A cover plate 21 is attached to the top wall of the magnetic carrier plate 3, and the cover plate 21 mates with the small plate placement ports 20. An installation groove 8 is provided on the top wall of the base 1, and a movable plate 9 is slidably connected to the inner wall of the installation groove 8. A positioning pin 10 and a positioning pin 24 are connected to the top wall of the movable plate 9, with the length of the positioning pin 10 being greater than that of the positioning pin 24. The magnetic carrier plate 3 has a through hole 11 and a through hole 23, which correspond to the positioning pin 10 and the positioning pin 24, respectively. The fixture 2 has a positioning hole 12. When the positioning pin 10 can pass through the positioning hole 12, the fixture 2 is aligned with the magnetic carrier plate 3. The large plate has a hole corresponding to the positioning pin 14. The base 1 is connected to a lifting mechanism, which includes a moving block 17. The base 1 is rotatably connected to a threaded rod 16, which observes the mounting groove 8. The side wall of the base 1 is connected to a motor 7, and the output end of the motor 7 is rotatably connected to the threaded rod 16. The moving block 17 is threadedly connected to the threaded rod 16, and the bottom wall of the moving block 17 is slidably connected to the bottom wall of the mounting groove 8. The top of the moving block 17 has an inclined surface 18, and the bottom of the moving plate 9 has an inclined surface 15, with the inclined surface 18 abutting against the inclined surface 15. The threaded rod 16 in the lifting mechanism rotates under the drive of the motor 7. Since the moving block 17 is threadedly connected to the threaded rod 16 and can only move horizontally due to the restriction of the mounting groove 8, the rotation of the threaded rod 16 is converted into the linear motion of the moving block 17. The inclined surface of the moving block 17 pushes the moving plate 9 to realize the lifting and lowering of the moving plate 9, thereby controlling the extension and retraction of the positioning pin.

[0025] When the moving plate 9 rises, positioning pins 10 and 14 extend. When positioning pin 14 passes through the corresponding hole on the large plate and the fixture 2 is aligned with the magnetic carrier plate 3, the welding point on the large plate aligns with the welding port 19. At this time, the small plate can be placed in the small plate placement port 20, so that the welding point of the small plate coincides with the welding point of the large plate. The non-welded parts of the small plate can be covered by the cover plate 21. The magnetic carrier plate 3 uses magnetic force to attract the fixture 2 and the cover plate 21, restricting the movement of the large and small plates.

[0026] The specific implementation process is as follows:

[0027] In use, starting motor 7 causes moving block 17 to move, pushing moving plate 9 upward, allowing positioning pin 10 and positioning pin 2 to pass through through hole 11 and through hole 2 13. Positioning pin 2 14 then passes through the corresponding hole in the large plate, and positioning pin 10 passes through positioning hole 12 in fixture 2. Starting motor 7 again causes positioning pin 10 and positioning pin 2 14 to retract into base 1. At this point, fixture 2 and magnetic carrier plate 3 are attracted together, pressing down the large plate. The small plate is placed in the small plate placement opening 20 of fixture 2, aligning the welding points of the small plate with those of the large plate. Cover plate 21 is attracted onto magnetic carrier plate 3, engaging with the small plate placement opening 20 to press down the non-welded areas of the small plate, restricting its movement. The tooling fixture, along with the workpiece, is placed into the reflow soldering equipment for welding.

[0028] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tooling fixture for reflow soldering, characterized in that: Includes a base (1), the base (1) is connected to a magnetic carrier plate (3), the magnetic carrier plate (3) adsorbs a fixture (2), the fixture (2) has a large plate welding port (19) and a small plate placement port (20), the magnetic carrier plate (3) adsorbs a cover plate (21), the cover plate (21) cooperates with the small plate placement port (20), the base (1) has an installation groove (8), the inner wall of the installation groove (8) is slidably connected to a moving plate (9), the moving plate (9) 9) The magnetic carrier plate (3) is connected with positioning pin 1 (10) and positioning pin 2 (14). The magnetic carrier plate (3) is provided with through hole 1 (11) and through hole 2 (13). The through hole 1 (11) and through hole 2 (13) respectively cooperate with positioning pin 1 (10) and positioning pin 2 (14). The fixture (2) is provided with positioning hole (12). The positioning hole (12) cooperates with positioning pin 1 (10). The base (1) is connected with lifting mechanism. The lifting mechanism is used to lift and move plate (9).

2. The tooling fixture for reflow soldering as described in claim 1, characterized in that: The lifting mechanism includes a moving block (17), a threaded rod (16) rotatably connected to the base (1), a motor (7) connected to the base (1), the output end of the motor (7) rotatably connected to the threaded rod (16), the moving block (17) is threadedly connected to the threaded rod (16), the moving block (17) is slidably connected to the mounting groove (8), the moving block (17) is provided with an inclined surface one (18), the moving plate (9) is provided with an inclined surface two (15), and the inclined surface one (18) and the inclined surface two (15) abut against each other.

3. The tooling fixture for reflow soldering as described in claim 1, characterized in that: The length of the first positioning pin (10) is greater than that of the second positioning pin (14).

4. The tooling fixture for reflow soldering as described in claim 1, characterized in that: The fixture (2) is connected to a handle (5).

5. A reflow soldering fixture as described in claim 1, characterized in that: The base (1) is connected to a placement frame (4).

6. The tooling fixture for reflow soldering as described in claim 1, characterized in that: The base (1) is connected to an anti-slip pad (6).

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