Flexible circuit board welding jig
Through the negative pressure fixation and exhaust system design of the flexible circuit board welding fixture, the circuit board damage caused by the concentration of the fixture is solved, and an efficient and safe welding process is achieved.
Patent Information
- Application Number
- CN202422221351.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the welding process of flexible circuit boards, stress concentration is caused by mechanical clamping of fixtures, which can easily cause deformation or damage.
A flexible circuit board welding fixture is adopted, and the circuit board is fixed to the fixture base through the first through-hole using negative pressure airflow. Combined with the design of the guide plate and the fixing rod, it reduces position deviation and stress concentration, and removes flue gas and particulate matter during the welding process through the exhaust system.
It effectively reduces the positional offset and damage of the flexible circuit board during the welding process, improves the welding accuracy and efficiency, protects the integrity of the circuit board, and removes harmful flue gases and particulate matter, improving the safety and efficiency of the welding process.
Smart Images
Figure CN223043792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit board processing, in particular to a flexible circuit board welding fixture. Background Art
[0002] A flexible circuit board is a circuit board made of a flexible substrate, and the flexible circuit board has high flexibility and bendability.
[0003] During the production process of the flexible circuit board, a welding process is required to connect the resistive components on the flexible circuit board to the pads or circuits on the circuit board through welding to achieve the transmission and control of electrical signals. First, the flexible circuit board to be welded is placed on the welding fixture, and the tip of the soldering iron is contacted with the end of each pin until the solder flows into the pin and forms a firm solder joint, thus completing the welding of the flexible circuit board.
[0004] During the welding process of the flexible circuit board, a fixture is usually used to clamp and fix the flexible circuit board. However, mechanical clamping will cause stress concentration on the surface of the flexible circuit board, easily resulting in problems such as deformation or damage of the flexible circuit board. Summary of the Utility Model
[0005] Therefore, the technical problem to be solved by the utility model is to overcome the problem that during the welding process of the flexible circuit board in the prior art, the fixture is prone to generate stress concentration when clamping the flexible circuit board, resulting in damage to the flexible circuit board.
[0006] To solve the above technical problem, the utility model provides a flexible circuit board welding fixture.
[0007] In an embodiment of the utility model, it includes a fixture base; the middle part of the fixture base is hollow; a plurality of first through holes are opened at the top of the fixture base; a connecting pipe is fixedly connected to the side wall of the fixture base; a plurality of springs are fixedly connected to the bottom of the fixture base; a plurality of the springs are fixedly connected inside the fixture base; a baffle is fixedly connected to the ends of the plurality of springs; a plurality of fixing rods are fixedly connected to the middle of the baffle; the plurality of fixing rods are arranged at positions corresponding to the first through holes; the flexible circuit board can be fixed on the fixture base through the negative pressure air flow passing through the inside of the first through holes, and the problem of position deviation of the flexible circuit board generated during the welding process can be effectively reduced.
[0008] In an embodiment of the utility model, a plurality of groups of guide plates are fixedly connected to the top of the fixture base; the plurality of groups of guide plates are fixedly connected inside the fixture base; every two of the guide plates are a group; each group of guide plates is fixedly connected at positions on both sides of the corresponding first through hole; the guide plates are arc-shaped; the deviation generated when the fixing rod moves upward through the baffle can be effectively reduced through the two guide plates.
[0009] In an embodiment of the present utility model, multiple groups of second through-holes are provided in the middle of the baffle; the second through-holes are arranged at positions corresponding to the fixing rods; a through-groove is provided in the middle of the fixing rod; two valves are fixedly connected to the middle of the fixing rod; by allowing the air flow to be discharged from the top of the fixing rod to the flexible circuit board, the circuit board can be quickly separated from multiple groups of fixing rods.
[0010] In an embodiment of the present utility model, two support rods are fixedly connected to the side wall of the jig base; the two support rods are fixedly connected to one side of the jig base; the two support rods are arranged oppositely; an exhaust pipe is fixedly connected to the ends of the two support rods; multiple exhaust holes are provided in the middle of the exhaust pipe; by discharging the air flow through the multiple exhaust holes to the welding area of the flexible circuit board, harmful fumes and tiny particles generated during the welding process can be quickly removed, and the influence of the fumes generated during the welding process on the flexible circuit board can be reduced.
[0011] In an embodiment of the present utility model, two sleeves are slidably connected to the middle of the exhaust pipe; the two sleeves are arranged oppositely; two elastic cloths are fixedly connected to the middle of the exhaust pipe; the ends of the elastic cloths are fixedly connected to the side walls of the sleeves; by using the sleeves and the elastic cloths to block the redundant exhaust holes, the air flow is discharged from the exposed exhaust holes among them, and the air flow can be more concentrated to blow to the welding area of the flexible circuit board through the sleeves and the elastic cloths.
[0012] In an embodiment of the present utility model, two connecting rods are fixedly connected to the side wall of the sleeve; the two connecting rods are arranged oppositely; a fixing ring is fixedly connected to the ends of the two connecting rods; the fixing ring is fixedly connected inside the elastic cloth; multiple groups of bristles are fixedly connected to the middle of the fixing ring; the ends of the multiple groups of bristles are attached to the surface of the exhaust pipe; the surface of the exhaust pipe can be effectively cleaned by the bristles, and the attachment of particulate matter in the soot during the welding process to the surface of the exhaust pipe can be effectively reduced.
[0013] In an embodiment of the present utility model, a filter screen is installed in the middle of the exhaust hole; the filter screen is fixedly connected to the middle of the exhaust hole; the particulate matter and dust impurities carried in the gas can be effectively filtered by the filter screen.
[0014] In an embodiment of the present utility model, a net plate is fixedly connected to the middle of the connecting pipe; the net plate is fixedly connected to the end close to the jig base; by the net plate, the dust and impurities can be effectively reduced from entering the inside of the jig base along with the air flow when the air flow passes through the connecting pipe and enters the inside of the jig base.
[0015] The above technical solution of the present utility model has the following advantages compared with the prior art:
[0016] For a flexible circuit board welding jig of the present utility model, by allowing the negative pressure air flow to pass through the inside of the first through-hole, the flexible circuit board can be fixed on the jig base, and the problem of position deviation of the flexible circuit board generated during the welding process can be effectively reduced.
[0017] A flexible circuit board welding fixture described in the present utility model can effectively reduce the deviation generated when the fixing rod moves upward through the baffle by two guiding plates, and can effectively reduce the situation where the fixing rod fails to smoothly enter the middle of the first through hole and gets stuck inside the fixture base. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to make the content of the present utility model easier to be clearly understood, the following further elaborates on the present utility model in detail according to specific embodiments of the present utility model in combination with the drawings.
[0019] Figure 1 is a perspective view of a flexible circuit board welding fixture of the present utility model;
[0020] Figure 2 is a schematic structural view of the baffle in the present utility model;
[0021] Figure 3 is a schematic structural view of the valve in the present utility model;
[0022] Figure 4 is a schematic structural view of the exhaust hole in the present utility model;
[0023] Figure 5 is a schematic structural view of the bristles in the present utility model;
[0024] Explanation of the reference numerals in the drawings: 1. Fixture base; 11. First through hole; 12. Connecting pipe; 13. Spring; 14. Baffle; 15. Fixing rod; 2. Guiding plate; 3. Second through hole; 31. Through groove; 32. Valve; 4. Support rod; 41. Exhaust pipe; 42. Exhaust hole; 5. Sleeve; 51. Elastic cloth; 6. Connecting rod; 61. Fixed ring; 62. Bristles; 7. Filter screen; 8. Mesh plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The following further illustrates the present utility model in combination with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited do not limit the present utility model.
[0026] Refer to Figures 1 to 3As shown in the figure, a flexible circuit board welding fixture of the present utility model includes a fixture base 1; the middle part of the fixture base 1 is hollow; a plurality of first through holes 11 are opened at the top of the fixture base 1; a connecting pipe 12 is fixedly connected to the side wall of the fixture base 1; a plurality of springs 13 are fixedly connected to the bottom of the fixture base 1; a plurality of the springs 13 are fixedly connected inside the fixture base 1; a baffle 14 is fixedly connected to the ends of the plurality of springs 13; a plurality of fixing rods 15 are fixedly connected to the middle of the baffle 14; the plurality of fixing rods 15 are arranged at positions corresponding to the first through holes 11; during work, place the flexible circuit board on the fixture base 1. First, the ends of the plurality of fixing rods 15 contact the flexible circuit board. When the connecting pipe 12 is connected to an air pump and the air pump is controlled to pump air, a negative pressure air flow is generated inside. The negative pressure air flow sucks the air flow inside the fixture base 1 through the connecting pipe 12. At the same time, the baffle 14 under strong suction moves downward inside the fixture base 1, and at the same time, the plurality of springs 13 elastically contract as the baffle 14 moves. When the baffle 14 moves downward, the plurality of fixing rods 15 slide in the middle of the first through holes 11, so that the fixing rods 15 enter the inside of the fixture base 1. At the same time, the negative pressure air flow inside the fixture base 1 sucks the flexible circuit board onto the fixture base 1 through the plurality of first through holes 11, thereby fixing the flexible circuit board and performing welding work. When the flexible circuit board welding is completed, control the air pump to exhaust. When the air flow enters the inside of the fixture base 1, the plurality of springs 13 elastically stretch to reset the baffle 14, and the plurality of fixing rods 15 enter the middle of the corresponding first through holes 11. The flexible circuit board is lifted and removed by the top of the fixing rods 15. The flexible circuit board can be fixed on the fixture base 1 through the negative pressure air flow passing through the inside of the first through holes 11, which can effectively reduce the problem of position deviation of the flexible circuit board during welding, effectively reduce the decrease in welding accuracy caused by the deviation of the flexible circuit board, effectively improve the accuracy and consistency of the flexible circuit board welding, and can effectively reduce the stress concentration and deformation caused by mechanical clamping, effectively reduce the damage caused by clamping the flexible circuit board, effectively increase the integrity of the flexible circuit board, and the welded flexible circuit board can be ejected by the plurality of fixing rods 15, which can quickly remove the flexible circuit board and effectively improve the efficiency of the flexible circuit board welding work.
[0027] Refer to Figure 2As shown in the figure, multiple sets of guide plates 2 are fixedly connected to the top of the jig base 1; multiple sets of the guide plates 2 are fixedly connected inside the jig base 1; every two of the guide plates 2 form a set; each set of the guide plates 2 is fixedly connected to the positions on both sides of the corresponding first through hole 11; the guide plates 2 are arranged in an arc shape; during operation, when the air flow is discharged into the inside of the jig base 1 and the baffle 14 is reset, the fixing rod 15 is guided by the two guide plates 2 to enter the middle of the first through hole 11. The two guide plates 2 can effectively reduce the deviation generated when the fixing rod 15 moves upward through the baffle 14, and can effectively reduce the situation that the fixing rod 15 fails to smoothly enter the middle of the first through hole 11 and gets stuck inside the jig base 1, effectively reducing the time for the flexible circuit board welding work to stop and adjust due to the fixing rod 15 getting stuck inside the jig base 1, and enabling the fixing rod 15 to smoothly enter the first through hole 11, thus reducing the problem of difficult adjustment operation of the fixing rod 15.
[0028] Refer to Figure 3 As shown in the figure, multiple sets of second through holes 3 are formed in the middle of the baffle 14; the second through holes 3 are arranged at the positions corresponding to the fixing rods 15; a through groove 31 is formed in the middle of the fixing rod 15; two valves 32 are fixedly connected to the middle of the fixing rod 15; during operation, during the process of evacuating the inside of the jig base 1, the negative pressure air flow enters the inside of the through groove 31, and at the same time, the valves 32 under suction are closed. When exhausting air into the jig base 1, the valves 32 are opened simultaneously under the blowing air, and the air flow passes through the two valves 32 and is discharged from the top of the fixing rod 15. By discharging the air flow from the top of the fixing rod 15 to the flexible circuit board, the circuit board can be quickly separated from multiple sets of fixing rods 15, effectively reducing the influence of mechanical stress on the flexible circuit board, effectively reducing the damage or deformation of the flexible circuit board during the separation process, protecting the integrity and performance of the circuit board through the air flow, and accelerating the cooling process of each welding area.
[0029] Refer to Figure 1 and Figure 4 As shown in the figure, two support rods 4 are fixedly connected to the side wall of the jig base 1; the two support rods 4 are fixedly connected to one side of the jig base 1; the two support rods 4 are arranged oppositely; the ends of the two support rods 4 are fixedly connected with an exhaust pipe 41; multiple exhaust holes 42 are formed in the middle of the exhaust pipe 41; during operation, one end of the exhaust pipe 41 is connected to an air pump, and the air pump discharges air into the exhaust pipe 41. After the air flow enters the exhaust pipe 41, it is discharged from the middle of the multiple exhaust holes 42 to the flexible circuit board welding area. Discharging the air flow to the flexible circuit board welding area through the multiple exhaust holes 42 can quickly remove the harmful fumes and fine particles generated during the welding process, reduce the influence of the fumes generated during the welding process on the flexible circuit board, increase the visibility during the welding process, and effectively reduce the large amount of heat generated during the flexible circuit board welding process, effectively reducing the temperature of the welding area and reducing the problem of damage to the components on the flexible circuit board due to overheating.
[0030] Refer to Figure 1 and Figure 4 As shown, two sleeves 5 are slidably connected to the middle of the exhaust pipe 41; the two sleeves 5 are arranged oppositely; two elastic cloths 51 are fixedly connected to the middle of the exhaust pipe 41; the ends of the elastic cloths 51 are fixedly connected to the side walls of the sleeves 5; during operation, according to the flexible circuit board welding area, the two sleeves 5 are slid on the middle of the exhaust pipe 41. When the sleeves 5 move, the elastic cloths 51 expand and contract with the sleeves 5. The redundant exhaust holes 42 are blocked by the sleeves 5 and the elastic cloths 51, so that the air flow is discharged from the exposed exhaust holes 42 among them. Through the sleeves 5 and the elastic cloths 51, the air flow can be more concentrated and blown towards the flexible circuit board welding area, reducing the disordered diffusion of the air flow in the welding area, effectively reducing unnecessary energy consumption, improving the utilization efficiency of the air flow, realizing directional cooling, and accurately blowing the soot generated in the welding area.
[0031] Refer to Figure 5 As shown, two connecting rods 6 are fixedly connected to the side walls of the sleeves 5; the two connecting rods 6 are arranged oppositely; fixing rings 61 are fixedly connected to the ends of the two connecting rods 6; the fixing rings 61 are fixedly connected inside the elastic cloths 51; multiple groups of bristles 62 are fixedly connected to the middle of the fixing rings 61; the ends of the multiple groups of bristles 62 are in contact with the surface of the exhaust pipe 41; during operation, when the sleeves 5 move in the middle of the exhaust pipe 41, the ends of the bristles 62 contact the surface of the exhaust pipe 41, and as the sleeves 5 move, the bristles 62 clean the surface of the exhaust pipe 41. Through the bristles 62, the surface of the exhaust pipe 41 can be effectively cleaned, the attachment of particulate matter in the soot during the welding process to the surface of the exhaust pipe 41 can be effectively reduced, the long-term accumulation of dust and impurities on the surface of the exhaust pipe 41 can be effectively reduced, and the friction and wear caused by the accumulation of dust and impurities on the surface of the exhaust pipe 41 can be effectively reduced, effectively extending the service life of the exhaust pipe 41.
[0032] Refer to Figure 1 and Figure 4 As shown, a filter screen 7 is installed in the middle of the exhaust hole 42; the filter screen 7 is fixedly connected to the middle of the exhaust hole 42; during operation, the filter screen 7 blocks dust and impurities from entering the inside of the exhaust pipe 41 through the exhaust hole 42. Through the filter screen 7, the particulate matter and dust and impurities carried in the gas can be effectively filtered out, the emission of these pollutants into the environment can be effectively reduced, air pollution can be effectively reduced, and the dust and impurities in the external air can be effectively blocked from entering the inside of the exhaust pipe 41, reducing the wear and scratches caused by the friction of the impurities on the inner wall of the exhaust pipe 41.
[0033] Refer to Figure 2As shown, a net plate 8 is fixedly connected to the middle of the connecting pipe 12; the net plate 8 is fixedly connected near one end of the fixture base 1. During operation, when air flow passes through the inside of the connecting pipe 12, the impurities and dust in the air flow are isolated by the net plate 8. Through the net plate 8, it can effectively reduce the situation that dust and impurities enter the inside of the fixture base 1 along with the air flow when the air flow passes through the connecting pipe 12 into the inside of the fixture base 1, effectively reducing the problem that it is difficult to clean due to the long-term accumulation of dust and impurities inside the fixture base 1, and can effectively reduce the attachment of dust and impurities to the flexible circuit board through the fixing rod 15, reducing the damage caused by the attachment of dust and impurities to the flexible circuit board.
[0034] Working principle: Place the flexible circuit board on the fixture base 1. First, the ends of multiple fixing rods 15 are in contact with the flexible circuit board. Connect the connecting pipe 12 to the air pump. When controlling the air pump to draw air, a negative pressure air flow is generated inside. The negative pressure air flow sucks the air flow inside the fixture base 1 through the connecting pipe 12. At the same time, the baffle 14 under strong suction moves downward inside the fixture base 1, and multiple springs 13 elastically contract as the baffle 14 moves. When the baffle 14 moves downward, multiple fixing rods 15 slide in the middle of the first through hole 11, so that the fixing rods 15 enter the inside of the fixture base 1. At the same time, the negative pressure air flow inside the fixture base 1 sucks the flexible circuit board onto the fixture base 1 through multiple first through holes 11, thereby fixing the flexible circuit board and performing welding work. After the flexible circuit board is welded, control the air pump to exhaust. When the air flow enters the inside of the fixture base 1, multiple springs 13 elastically stretch to reset the baffle 14, and multiple fixing rods 15 enter the middle of the corresponding first through holes 11. The flexible circuit board is lifted and removed by the top of the fixing rod 15. When the air flow is discharged into the inside of the fixture base 1 and the baffle 14 is reset, the fixing rods 15 are guided by two guide plates 2 to enter the middle of the first through holes 11. During the process of evacuating the inside of the fixture base 1, the negative pressure air flow enters the inside of the through groove 31, and at the same time, the valve flap 32 under suction closes. When exhausting to the inside of the fixture base 1, the valve flap 32 is opened when blown, and the air flow passes through the two valve flaps 32 and is discharged from the top of the fixing rod 15. Connect one end of the exhaust pipe 41 to the air pump, and exhaust air into the exhaust pipe 41 through the air pump. After the air flow enters the exhaust pipe 41, it is discharged from the middle of multiple exhaust holes 42 to the flexible circuit board welding area. According to the flexible circuit board welding area, slide two sleeves 5 in the middle of the exhaust pipe 41. When the sleeves 5 move, the elastic cloth 51 expands and contracts with the sleeves 5. When the sleeves 5 move in the middle of the exhaust pipe 41, the ends of the brush hairs 62 contact the surface of the exhaust pipe 41. As the sleeves 5 move, the brush hairs 62 clean the surface of the exhaust pipe 41. The dust and impurities are blocked by the filter screen 7 from entering the inside of the exhaust pipe 41 through the exhaust holes 42. When the air flow passes through the inside of the connecting pipe 12, the impurities and dust in the air flow are isolated by the net plate 8.
[0035] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of this utility model.
Claims
1. A flexible circuit board welding jig, comprising a jig base (1); characterized in that: The middle part of the jig base (1) is hollow; a plurality of first through holes (11) are formed on the top of the jig base (1); a connecting tube (12) is fixedly connected to the side wall of the jig base (1); a plurality of springs (13) are fixedly connected to the bottom of the jig base (1); a plurality of springs (13) are fixedly connected to the inside of the jig base (1); a baffle (14) is fixedly connected to the ends of the plurality of springs (13); a plurality of fixing rods (15) are fixedly connected to the middle part of the baffle (14); and the plurality of fixing rods (15) are arranged at positions corresponding to the first through holes (11).
2. The flexible circuit board welding jig according to claim 1, characterized in that: The top of the jig base (1) is fixedly connected to a plurality of guide plates (2); the plurality of guide plates (2) are fixedly connected inside the jig base (1); every two guide plates (2) form a group; each group of guide plates (2) is fixedly connected to positions on both sides of the corresponding first through hole (11); the guide plates (2) are arranged in an arc shape.
3. A flexible circuit board welding jig according to claim 2, characterized in that: A plurality of groups of second through holes (3) are provided in the middle of the baffle (14); the second through holes (3) are arranged at positions corresponding to the fixing rods (15); a through groove (31) is provided in the middle of the fixing rods (15); and two valves (32) are fixedly connected to the middle of the fixing rods (15).
4. The flexible circuit board welding jig according to claim 3, characterized in that: Two support rods (4) are fixedly connected to the side wall of the jig base (1); the two support rods (4) are fixedly connected to one side of the jig base (1); the two support rods (4) are arranged opposite to each other; exhaust pipes (41) are fixedly connected to the ends of the two support rods (4); and a plurality of exhaust holes (42) are provided in the middle of the exhaust pipes (41).
5. The flexible circuit board welding jig according to claim 4, characterized in that: Two sleeves (5) are slidably connected to the middle of the exhaust pipe (41); the two sleeves (5) are arranged opposite to each other; two elastic cloths (51) are fixedly connected to the middle of the exhaust pipe (41); the ends of the elastic cloths (51) are fixedly connected to the side walls of the sleeves (5).
6. The flexible circuit board welding jig according to claim 5, characterized in that: Two connecting rods (6) are fixedly connected to the side wall of the sleeve (5); the two connecting rods (6) are arranged opposite to each other; the ends of the two connecting rods (6) are fixedly connected to fixing rings (61); the fixing rings (61) are fixedly connected to the inside of the elastic cloth (51); a plurality of groups of bristles (62) are fixedly connected to the middle of the fixing ring (61); the ends of the plurality of groups of bristles (62) are in contact with the surface of the exhaust pipe (41).
7. The flexible circuit board welding jig according to claim 6, characterized in that: A filter screen (7) is installed in the middle of the exhaust hole (42); the filter screen (7) is fixedly connected to the middle of the exhaust hole (42).
8. The flexible circuit board welding jig according to claim 7, characterized in that: A mesh plate (8) is fixedly connected to the middle of the connecting pipe (12); the mesh plate (8) is fixedly connected to one end close to the fixture base (1).