A spot tin jig
By designing limiting components and limiting flipping units, the problem of stable clamping of irregularly shaped workpieces during the soldering process is solved, ensuring the accuracy of solder and the ease of operation, and improving the success rate of soldering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HAOMAN ELECTRONIC TECH CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional flat clamps cannot effectively fix irregularly shaped workpieces such as semi-circles or arcs, causing solder to shift, resulting in short circuits or poor soldering. This makes the operation difficult and has a low success rate.
The system employs a limiting assembly and a limiting flip unit, including a guide rod, compression spring, push plate, adjustment unit, and limiting flip unit. Through adaptive clamping and uniform downward pressure, it ensures the stability and accuracy of the workpiece during the soldering process.
It achieves stable clamping of irregularly shaped workpieces, avoids solder material deviation, improves the accuracy and success rate of soldering position, and reduces the difficulty of operation.
Smart Images
Figure CN224526188U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of soldering technology, and in particular to a soldering fixture. Background Technology
[0002] Soldering fixtures are specialized positioning tools used in the soldering process of electronic components, mainly for fixing the workpiece to be processed.
[0003] Existing technology CN202420576300.3 discloses a combined soldering fixture, including a base plate, a pressure plate, a sliding plate, a positioning plate, a slider, and a driving device; the pressure plate is fixed to the base plate, and the sliding plate is slidably connected to the pressure plate; the sliding plate is provided with a receiving groove one; the positioning plate is fixedly connected to the pressure plate, and the positioning plate is located in the receiving groove one, with gaps formed between the outer walls on both sides of the positioning plate and the inner walls on both sides of the receiving groove one; the positioning plate is provided with a receiving groove two; the slider is fixedly connected to the sliding plate, and the slider is movably located in the receiving groove two; the receiving groove two is provided with a clamping groove one, and the slider is provided with a clamping groove two, which cooperates with the clamping groove one to form a clamping opening.
[0004] However, for irregularly shaped workpieces such as semi-circles and arcs, traditional flat clamps cannot fit the curved surface. When soldering the workpiece, uneven force can cause it to shake, deflect, or fall off, resulting in the solder material shifting to the non-soldering area, causing short circuits or poor soldering. Manual adjustment of the workpiece angle and position is required repeatedly, which is difficult to operate and has a low success rate.
[0005] Therefore, this application proposes a soldering fixture. Utility Model Content
[0006] To address the problems mentioned in the background section, this application provides a soldering fixture.
[0007] This application provides a soldering fixture, which adopts the following technical solution: It includes a base plate, on which a first rectangular side plate and a second rectangular side plate, both vertically aligned, are fixedly installed on the top two sides. A limiting assembly for clamping the workpiece is provided above the base plate. The limiting assembly includes a first guide rod and a stop plate. The stop plate and the first rectangular side plate are parallel to each other. A compression spring is sleeved on the outer circumference of the first guide rod, and the compression spring is located between the stop plate and the second rectangular side plate. The workpiece is located between the first rectangular side plate and the stop plate. An adjustment unit for adjusting the position of the compression spring is provided on one side of the second rectangular side plate. The adjustment unit includes a push plate and a lead screw. A limiting flipping unit for horizontal control of the workpiece is also provided above the base plate. The limiting flipping unit includes a pressure plate, a lifting column, and a cylindrical tube. The pressure plate and the lifting column are fixedly connected. The cylindrical tube is hollow, and the lifting column movably penetrates the cylindrical tube.
[0008] Optionally, the first guide rod is in two sets, with the two sets of first guide rods fixedly installed between the first rectangular side plate and the second rectangular side plate, and the two sets of first guide rods are parallel to each other with the bottom plate.
[0009] Optionally, the abutment can be movably connected through two sets of first guide rods, and anti-slip textures are provided on the side wall of the abutment and the first rectangular side plate that are close to each other.
[0010] Optionally, both ends of the push plate are provided with through holes, and the two sets of first guide rods pass through the push plate through the through holes. The push plate is located between the compression spring and the second rectangular side plate.
[0011] Optionally, an assembly cylindrical seat is movably installed at the middle position of the push plate, one end of the lead screw is fixedly connected to the assembly cylindrical seat, and the other end of the lead screw movably passes through the second rectangular side plate and is fixedly connected to a knob. The lead screw and the second rectangular side plate are connected by a thread.
[0012] Optionally, there are two sets of lifting columns, which are located on both sides of the bottom end of the pressure plate. Screws are provided between the pressure plate and the lifting columns. There are also two sets of cylindrical tubes, with a slide fixedly installed at the bottom end of each set of cylindrical tubes. A tension spring is provided inside the cylindrical tube cavity. One end of the tension spring is fixedly connected to the bottom end of the corresponding lifting column, and the other end of the tension spring is fixedly connected to the top end of the slide.
[0013] Optionally, the base plate has sliding grooves on both the front and rear side walls. There are two sets of sliding blocks. Each set of sliding blocks has a protrusion on the side that is close to each other. The protrusion of the sliding block is movably engaged in the corresponding sliding groove. A second guide rod is fixedly installed in each set of sliding grooves. The second guide rod movably passes through the protrusion on the corresponding side of the sliding block.
[0014] In summary, this application includes the following beneficial technical effects: This utility model, by setting a base plate, a first rectangular side plate, a second rectangular side plate, and a limiting component, has a compression spring sleeved on the outer wall of the first guide rod, pushing the abutment plate to slide along the first guide rod towards the first rectangular side plate, forming an adaptive clamping force. Simultaneously, the anti-slip texture enhances the friction of the clamping surface. The two sets of first guide rods act as limiting guides for the abutment plate, preventing skewing and achieving flexible clamping and adaptive pressure adjustment. This adapts to workpieces of different thicknesses and avoids damage, while ensuring no workpiece displacement during soldering, significantly improving the soldering position accuracy. By setting an adjustment unit, rotating the knob causes the lead screw to move axially, pushing or pulling the push plate. After the push plate position is adjusted, the pressure of the abutment plate on the workpiece changes accordingly, preventing overpressure damage to precision components or insecure clamping. By setting a limiting flipping unit, uniform downward pressure is applied to the surface of the workpiece during soldering, preventing warping, shaking, or flipping of the workpiece due to solder paste viscosity, thermal deformation, or external forces, ensuring it remains in a horizontal and stable state. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the device in this application; Figure 2 This is a schematic diagram of the installation position of the parts to be processed in this application; Figure 3 This is a top view of the device described in this application; Figure 4 This is a perspective view of the adjustment unit of this application; Figure 5 This is a perspective view of the flip-up unit in this application.
[0016] Figure label: 10. Base plate; 11. First rectangular side plate; 12. Second rectangular side plate; 13. Support plate; 14. Compression spring; 15. Adjustment unit; 16. Limiting tilting unit; 17. First guide rod; 18. Anti-slip texture; 19. Push plate; 20. Through hole; 21. Lead screw; 22. Assembly cylindrical seat; 23. Knob; 24. Slide groove; 25. Slide seat; 26. Second guide rod; 27. Cylindrical tube; 28. Lifting column; 29. Pressure plate; 30. Screw. Detailed Implementation
[0017] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0018] This application discloses a soldering fixture. For example... Figure 1 and Figure 2As shown, the fixture includes a base plate 10, with a first rectangular side plate 11 and a second rectangular side plate 12 fixedly mounted vertically on both sides of the top of the base plate 10. The base plate 10, the first rectangular side plate 11, and the second rectangular side plate 12 together form the core of the fixture, a stable and rigid frame, providing the mounting base and operating space for all other components. A limiting assembly for clamping the workpiece is provided above the base plate 10. The limiting assembly includes a first guide rod 17 and a stop plate 13. The stop plate 13 is parallel to the first rectangular side plate 11. A compression spring 14 is sleeved on the outer periphery of the first guide rod 17, and the compression spring 14 is located between the stop plate 13 and the second rectangular side plate 12. The compression spring 14 applies a continuous force to the stop plate 13 towards the first rectangular side plate 11. The workpiece is positioned between the first rectangular side plate 11 and the abutment plate 13 by the thrust of the compression spring 14. The abutment plate 13 moves along the first guide rod 17, thus working together with the first rectangular side plate 11 to form a flexible clamping area that can adapt to a certain size range. The workpiece is reliably clamped between the two, ensuring its positional stability during operation. There are two sets of first guide rods 17, which are fixedly installed between the first rectangular side plate 11 and the second rectangular side plate 12. The two sets of first guide rods 17 are parallel to each other with the base plate 10. The design of the two sets of first guide rods 17 effectively restricts the degree of freedom of movement of the abutment plate 13, ensuring that it can only move along a preset parallel path, preventing skewing, and improving clamping accuracy and alignment.
[0019] Please see Figure 3 and Figure 4 An adjustment unit 15 is provided on one side of the second rectangular side plate 12 to adjust the position of the compression spring 14. The adjustment unit 15 includes a push plate 19 and a lead screw 21. A stop plate 13 movably passes through two sets of first guide rods 17, allowing it to slide freely. Anti-slip textures 18 are provided on the side wall of the stop plate 13 that is close to the first rectangular side plate 11 to increase friction with the workpiece and prevent slippage. Through holes 20 are provided at both ends of the push plate 19, through which the two sets of first guide rods 17 movably pass. This allows the push plate 19 to slide along the first guide rods 17. The push plate 19 is located between the compression spring 14 and the second rectangular side plate 12. A cylindrical mounting base 22 is movably installed at the middle position of the push plate 19. One end of the lead screw 21 is fixedly connected to the cylindrical mounting base 22, and the other end of the lead screw 21 movably passes through the second rectangular side plate 12 and is fixedly connected to a knob 23. The lead screw 21 and the second rectangular side plate 12 are connected by a thread. The axial movement of the lead screw 21 will directly push or pull the push plate 19 to move. The push plate 19 changes the compression distance between the compression spring 14 and the second rectangular side plate 12, changes the preload of the compression spring 14, and thus changes the magnitude of the initial thrust applied by the compression spring 14 to the abutment plate 13, ensuring the clamping of the workpiece to be processed.
[0020] Please see Figure 5 Above the base plate 10, there is also a limiting flip unit 16 for horizontal control of the workpiece to be processed. It is used to apply uniform downward pressure to the surface of the workpiece to be processed during the soldering operation to prevent the workpiece from warping, shaking or flipping due to the stickiness of the solder paste, thermal deformation or external force, and to ensure that it maintains a horizontal and stable state. The limiting flip unit 16 includes a pressure plate 29, a lifting column 28 and a cylindrical tube 27. The pressure plate 29 and the lifting column 28 are fixedly connected. The cylindrical tube 27 is hollow and the lifting column 28 can be movably inserted into the corresponding cavity of the cylindrical tube 27. There are two sets of lifting columns 28, located on both sides of the bottom end of the pressure plate 29. Screws 30 are installed between the pressure plate 29 and the lifting columns 28. There are also two sets of cylindrical cylinders 27, with slides 25 fixedly installed at the bottom end of each set of cylindrical cylinders 27. A tension spring is installed inside the cavity of the cylindrical cylinder 27. One end of the tension spring is fixedly connected to the bottom end of the corresponding lifting column 28, and the other end of the tension spring is fixedly connected to the top end of the slide 25. This design allows the tension spring to apply an adaptive, vertically downward elastic force to the pressure plate 29, effectively counteracting the torque and force that may cause the workpiece to flip or warp violently during the process. The base plate 10 has grooves 24 on both the front and rear sides. There are two sets of slides 25. Each set of slides 25 has a protrusion on the side that is close to each other. The protrusion of the slide 25 is movably engaged in the corresponding groove 24. A second guide rod 26 is fixedly installed in each set of grooves 24. The second guide rod 26 moves through the protrusion on the side of the corresponding slide 25, that is, the slide 25 can slide along the axis of the second guide rod 26, so that the position of the pressure plate 29 can be moved flexibly, thereby applying the downward pressure precisely to different key areas on the surface of the workpiece. This is suitable for different types of workpieces or different processing stages of workpieces where local deformation needs to be controlled.
[0021] The implementation principle of the soldering fixture in this application embodiment is as follows: When in use, the workpiece to be processed is first placed between the first rectangular side plate 11 and the abutment plate 13. The compression spring 14 is sleeved on the first guide rod 17 and located between the abutment plate 13 and the second rectangular side plate 12. The preload of the compression spring 14 pushes the abutment plate 13 to slide along the first guide rod 17 toward the first rectangular side plate 11, forming an adaptive clamping force.
[0022] Then, the operator drives the lead screw 21 to rotate by rotating the knob 23. The lead screw 21 is threadedly connected to the second rectangular side plate 12. The other end of the lead screw 21 is fixedly connected to the assembly cylindrical seat 22. The assembly cylindrical seat 22 is movably installed in the middle position of the push plate 19, thereby changing the position of the push plate 19. After the position of the push plate 19 is adjusted, the pressure of the abutment plate 13 on the workpiece changes accordingly, avoiding overpressure damage to precision components or insecure clamping.
[0023] Finally, the pressure plate 29 is inserted into the cylindrical tube 27 with a tension spring through the lifting column 28. The tension spring is fixedly installed between the lifting column 28 and the slide 25 to provide adaptive downward pressure. The slide 25 engages with the slide groove 24 of the base plate 10 through the protrusion and slides horizontally along the second guide rod 26, so that the pressure plate 29 covers the key area of the workpiece. When soldering, the elastic downward pressure of the pressure plate 29 and the lateral clamping cooperate to form a three-degree-of-freedom constraint, which counteracts the torque caused by thermal deformation or solder paste stickiness, and ensures that the workpiece is flat and stable.
[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A soldering fixture, comprising a base plate (10), characterized in that: The bottom plate (10) has a first rectangular side plate (11) and a second rectangular side plate (12) fixedly installed on both sides of the top, and a limiting component for clamping the workpiece to be processed is provided above the bottom plate (10). The limiting component includes a first guide rod (17) and a stop plate (13). The stop plate (13) is parallel to the first rectangular side plate (11). A compression spring (14) is sleeved on the outer periphery of the first guide rod (17), and the compression spring (14) is located between the stop plate (13) and the second rectangular side plate (12). The workpiece to be processed is located between the first rectangular side plate (11) and the stop plate (13). The second rectangular side plate (12) is provided with an adjustment unit (15) for adjusting the position of the compression spring (14) on one side. The adjustment unit (15) includes a push plate (19) and a lead screw (21). Above the base plate (10), there is also a limiting flipping unit (16) for horizontal control of the workpiece to be processed. The limiting flipping unit (16) includes a pressure plate (29), a lifting column (28) and a cylindrical tube (27). The pressure plate (29) and the lifting column (28) are fixedly connected. The cylindrical tube (27) is hollow. The lifting column (28) moves through the cylindrical tube (27).
2. The soldering fixture according to claim 1, characterized in that: The first guide rod (17) consists of two sets. The two sets of first guide rods (17) are fixedly installed between the first rectangular side plate (11) and the second rectangular side plate (12), and the two sets of first guide rods (17) are parallel to each other with the bottom plate (10).
3. The soldering fixture according to claim 1, characterized in that: The abutment (13) is movably connected through the two sets of first guide rods (17), and anti-slip textures (18) are provided on the side wall of the abutment (13) and the first rectangular side plate (11) that are close to each other.
4. The soldering fixture according to claim 1, characterized in that: Both ends of the push plate (19) are provided with through holes (20), and the two sets of first guide rods (17) pass through the push plate (19) through the through holes (20). The push plate (19) is located between the compression spring (14) and the second rectangular side plate (12).
5. The soldering fixture according to claim 4, characterized in that: An assembly cylinder seat (22) is movably installed at the middle position of the push plate (19). One end of the lead screw (21) is fixedly connected to the assembly cylinder seat (22), and the other end of the lead screw (21) movably passes through the second rectangular side plate (12) and is fixedly connected to a knob (23). The lead screw (21) and the second rectangular side plate (12) are connected by a thread.
6. The soldering fixture according to claim 1, characterized in that: The lifting column (28) consists of two sets, with the two sets of lifting columns (28) located on both sides of the bottom end of the pressure plate (29). Screws (30) are provided between the pressure plate (29) and the lifting column (28). The cylindrical tube (27) consists of two sets, with a slide (25) fixedly installed at the bottom end of each set of cylindrical tubes (27). A tension spring is provided inside the cavity of the cylindrical tube (27). One end of the tension spring is fixedly connected to the bottom end of the corresponding lifting column (28), and the other end of the tension spring is fixedly connected to the top end of the slide (25).
7. The soldering fixture according to claim 6, characterized in that: The base plate (10) has grooves (24) on both the front and rear sides. There are two sets of slides (25). The two sets of slides (25) have protrusions on the side of each other. The protrusions of the slides (25) are movably engaged in the corresponding grooves (24). The two sets of slides (24) are fixedly installed with second guide rods (26). The second guide rods (26) movably pass through the protrusions on the side of the corresponding slides (25).