Welding jig for PCB (Printed Circuit Board) and FPC (Flexible Printed Circuit)
By using a magnetic steel sheet adsorption and limiting protrusion design, the problem of component damage during the pressing process of the welding fixture is solved, achieving high welding precision and protection effect.
Patent Information
- Application Number
- CN202423209984.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing soldering fixtures for PCBs and FPCs can damage components if the cover plates are pressed too tightly during soldering, while insufficient tightness can affect the soldering quality.
A magnet is used to attract the steel sheet to the connection between the PCB and FPC. The steel sheet mounting groove is equipped with limiting protrusions to ensure that the steel sheet does not slide and the cover plate does not directly contact the components. The steel sheet is 0.4mm thick to prevent damage.
It enables precise clamping and protection of components during the welding process, preventing damage and improving welding quality.
Smart Images
Figure CN223843980U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic component welding technology, and in particular to a welding fixture for PCBs and FPCs. Background Technology
[0002] With the development of electronic products, the technical requirements for connecting FPC (Flexible Printed Circuit) boards to PCBs are increasing, and the corresponding technical costs are also rising. To reduce manufacturing costs, most companies use soldering to combine the two. However, existing soldering fixtures for PCBs and FPCs often have cover plates that are pressed too tightly during soldering, which can easily damage both the PCB and FPC. To protect both the PCB and FPC, the cover plates are usually not closed too tightly, which can lead to loosening between the PCB and FPC, thus affecting the soldering quality. Therefore, this invention proposes a soldering fixture for PCBs and FPCs. Utility Model Content
[0003] The main purpose of this utility model is to provide a welding fixture for PCB and FPC. The attraction force provided by the magnet presses the connection between the PCB and FPC together with the steel sheet. The mounting groove of the steel sheet is provided with limiting protrusions to prevent the steel sheet from sliding, thereby ensuring welding accuracy. The steel sheet is only 0.4mm thick and has a small mass, which can prevent the PCB and FPC from being crushed. The cover plate does not directly contact the PCB and FPC, which can further prevent the product from being crushed.
[0004] This utility model achieves the above-mentioned objective through the following technical solution: a welding fixture for PCB and FPC, comprising a base plate, a cover plate, and a limiting plate connected between the base plate and the cover plate. The base plate is provided with a PCB mounting groove, and an FPC positioning protrusion is provided in the PCB mounting groove. The base plate is provided with a plurality of positioning pin mounting holes, and positioning pins are connected in the positioning pin mounting holes. The limiting plate and the cover plate are provided with positioning holes. The limiting plate is provided with a steel sheet mounting hole, and a steel sheet is connected in the steel sheet mounting hole. The base plate is provided with a magnet mounting hole, and a high-temperature resistant magnet for adsorbing the steel sheet is installed in the magnet mounting hole. A limiting mechanism is connected between the cover plate and the base plate.
[0005] Preferably, the steel sheet has a thickness of 0.4 mm, and one end of the steel sheet is provided with a welding clearance hole.
[0006] Preferably, the side wall of the mounting hole of the steel sheet is provided with a limiting protrusion, and the side of the steel sheet is provided with a limiting groove that matches the limiting protrusion.
[0007] Preferably, the limiting mechanism includes multiple guide posts that vertically penetrate the cover plate. A knob is connected to the top of each guide post, and a stop block is connected to the bottom of each guide post. A spring is fitted on each guide post, and the two ends of the spring are respectively connected to the lower end face of the knob and the upper end face of the cover plate. A limiting hole is provided on the lower end face of the base plate, and an opening is provided on the upper end face of the base plate for the stop block to extend into the limiting hole. A stop block limiting groove is provided on the top surface of the limiting hole.
[0008] The beneficial effects of this utility model are as follows: the attraction force provided by the magnet makes the steel sheet press the connection between the PCB and the PFC tightly. The steel sheet mounting groove is provided with limiting protrusions to prevent the steel sheet from sliding, thereby ensuring welding accuracy. The steel sheet is only 0.4mm thick and has a small mass, which can prevent the PCB and FPC from being crushed. The cover plate does not directly contact the PCB and FPC, which can further prevent the product from being crushed. Attached Figure Description
[0009] Figure 1 This is an example of the arrangement of soldering fixtures for PCBs and FPCs during operation.
[0010] Figure 2 This is a schematic diagram of the base plate structure.
[0011] Figure 3 This is a schematic diagram of a steel sheet structure.
[0012] Figure 4 This is a schematic diagram of the limiting hole structure.
[0013] The numbers in the diagram represent:
[0014] 1. Base plate; 2. Cover plate; 3. Limiting plate; 4. PCB mounting slot; 5. FPC positioning protrusion; 6. Positioning pin; 7. Positioning pin mounting hole; 8. Steel sheet; 9. Steel sheet mounting hole; 10. Opening; 11. Magnet mounting hole; 12. Limiting protrusion; 13. Guide post; 14. Knob; 15. Stop; 16. Spring; 17. Limiting hole; 18. Stop limiting groove. Detailed Implementation
[0015] The present invention will be further described in detail below with reference to specific embodiments.
[0016] Example:
[0017] like Figures 1 to 4As shown, this utility model discloses a welding fixture for PCBs and FPCs, comprising a base plate 1, a cover plate 2, and a limiting plate 3 connected between the base plate 1 and the cover plate 2. The base plate 1 has a PCB mounting groove 4, and an FPC positioning protrusion 5 is provided in the PCB mounting groove 4. The base plate 1 has a plurality of positioning pin mounting holes 7, and a positioning pin 6 is connected in the positioning pin mounting holes 7. The limiting plate 3 and the cover plate 2 have positioning holes. The limiting plate 3 has a steel sheet mounting hole 9, and a steel sheet 8 is connected in the steel sheet mounting hole 9. The base plate 1 has a magnet mounting hole 11, and a high-temperature resistant magnet for adsorbing the steel sheet 8 is installed in the magnet mounting hole 11. A limiting mechanism is connected between the cover plate 2 and the base plate 1.
[0018] The steel sheet 8 has a thickness of 0.4mm, which reduces the weight of the steel sheet 8 and prevents the PCB and FPC from being crushed. One end of the steel sheet 8 is provided with a welding clearance hole.
[0019] The side wall of the steel plate mounting hole 9 is provided with a limiting protrusion 12, and the side of the steel plate 8 is provided with a limiting groove that matches the limiting protrusion 12, so as to prevent the steel plate 8 from shaking after being installed into the steel plate mounting hole 9.
[0020] The limiting mechanism includes multiple guide posts 13 that vertically penetrate the cover plate 2. A knob 14 is connected to the top of the guide post 13, and a stop block 15 is connected to the bottom of the guide post 13. A spring 16 is fitted on the guide post 13. The two ends of the spring 16 are respectively connected to the lower end face of the knob 14 and the upper end face of the cover plate 2. A limiting hole 17 is provided on the lower end face of the base plate 1, and an opening 10 is provided on the upper end face of the base plate 1 for the stop block 15 to extend into the limiting hole 17. A stop block limiting groove 18 is provided on the top surface of the limiting hole 17.
[0021] The working process of this utility model is as follows: The PCB to be soldered is placed into the PCB mounting slot 4. The PCB has holes to avoid the FPC positioning protrusions 5. The FPC is placed on the PCB and positioned by the FPC positioning protrusions 5. Multiple positioning pins 6 are inserted into the positioning pin mounting holes 7. The limiting plate 3 is placed on the base plate 1. The steel sheet 8 is placed into the steel sheet mounting hole 9. When the magnet 10 provides attraction, the steel sheet 8 presses the PCB and FPC together. The steel sheet 8 has a thickness of 0.4mm, which can prevent the PCB and FPC from being crushed. Place the cover plate 2 on the limiting plate 3, press down the knob 14, and the stop block 15 extends into the limiting hole 17. Rotate the knob 14 to drive the stop block 15 to rotate. When the stop block 15 rotates to the stop block limiting groove 18, release the knob 14, and the stop block 15 is locked into the stop block limiting groove 18, thereby completing the assembly of the fixture. Send the assembled fixture into the welding machine for welding.
[0022] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A soldering fixture for PCBs and FPCs, characterized in that: The device includes a base plate, a cover plate, and a limiting plate connecting the base plate and the cover plate. The base plate has a PCB mounting groove with FPC positioning protrusions inside. The base plate has multiple positioning pin mounting holes with positioning pins connected to them. The limiting plate and the cover plate have positioning holes. The limiting plate has steel sheet mounting holes with steel sheets connected to them. The base plate has magnet mounting holes with high-temperature resistant magnets for attracting the steel sheets installed inside them. A limiting mechanism connects the cover plate and the base plate.
2. The soldering fixture for PCBs and FPCs according to claim 1, characterized in that: The steel sheet has a thickness of 0.4 mm, and one end of the steel sheet is provided with a welding clearance hole.
3. A soldering fixture for PCBs and FPCs according to claim 2, characterized in that: The side wall of the mounting hole of the steel sheet is provided with a limiting protrusion, and the side of the steel sheet is provided with a limiting groove that matches the limiting protrusion.
4. A soldering fixture for PCBs and FPCs according to claim 1, characterized in that: The limiting mechanism includes multiple guide posts that vertically penetrate the cover plate. A knob is connected to the top of each guide post, and a stop block is connected to the bottom of each guide post. A spring is fitted on each guide post, and the two ends of the spring are respectively connected to the lower end face of the knob and the upper end face of the cover plate. A limiting hole is provided on the lower end face of the base plate, and an opening is provided on the upper end face of the base plate for the stop block to extend into the limiting hole. A stop block limiting groove is provided on the top surface of the limiting hole.