FPC circuit board bonding pad printing solder paste positioning jig

Abstract

The utility model relates to the technical field of flexible circuit board production and processing, and discloses an FPC circuit board pad printing solder paste positioning tool comprising a mounting plate, one side of the mounting plate is provided with a pad assembly which can be rapidly disassembled and assembled, and two sides of the pad assembly are provided with fixing assemblies which assist the pad assembly to be rapidly fixed on the mounting plate. One side of each fixing assembly is provided with a limiting assembly for relieving the fixing effect of the fixing assembly; by arranging the bonding pad assembly, the fixing assembly and the limiting assembly, when solder paste printing is carried out on the bonding pad, the bonding pad assembly is placed on the mounting plate, positioning printing can be carried out on the bonding pad through the fixing assembly, the limiting assembly can be matched with the fixing assembly to relieve the fixing effect, and therefore the bonding pad can be rapidly replaced; through the arrangement, printing positioning can be carried out without extruding the bonding pad, the bonding pad assembly can be rapidly replaced under the condition that the mounting plate is not disassembled, and the printing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production and processing of flexible circuit boards, in particular to a positioning fixture for printing solder paste on pads of FPC circuit boards. Background Art

[0002] At present, the FPC circuit board pad printing solder paste positioning jig is an auxiliary tool specially designed to ensure that the solder paste is accurately printed on the FPC (flexible printed circuit board) circuit board pad. The main function of this jig is to help locate the pad and ensure the accuracy and consistency of solder paste printing, thereby improving the quality and efficiency of welding. Since circuit boards need to be used in many places, it is necessary to optimize the production of circuit boards.

[0003] For example, a Chinese utility model patent with announcement number CN213586449U discloses a FPC circuit board pad printing solder paste positioning jig. Although the above-mentioned prior art can be adjusted according to FPC circuit boards of different widths to improve the stability of the FPC circuit boards, the FPC circuit boards are very soft, so their pads are also soft. If the pads are clamped and positioned by clamping on both sides, it is easy for the pads to be squeezed and bent due to a little more force, and the slight bending is not easy to be seen, but it will affect the printing of solder paste. Therefore, it is necessary to design a FPC circuit board pad printing solder paste positioning jig that can limit the positioning of the circuit board without causing deformation of the circuit board due to excessive clamping. Utility Model Content

[0004] In order to solve the technical problem that the flexible FPC circuit board pads may be deformed due to the clamping positioning on both sides, the utility model provides a FPC circuit board pad printing solder paste positioning fixture.

[0005] The utility model is implemented by the following technical scheme: a FPC circuit board pad printing solder paste positioning fixture, including a mounting plate, one side of the mounting plate is provided with a pad assembly that can be quickly disassembled and assembled, both sides of the pad assembly are provided with fixing assemblies that assist the pad assembly to be quickly fixed on the mounting plate, one side of each of the fixing assemblies is provided with a limiting assembly that releases the fixing effect of the fixing assembly, one side of the mounting plate is provided with a mounting groove, and the pad assembly includes a limiting plate that is arranged inside the mounting groove and has a limiting groove, and a pad arranged inside the limiting groove.

[0006] Through the above technical solution, the soldering pad is directly placed inside the matching limiting plate, and the limiting plate is fixed by using a fixing component, so as to achieve the restricted positioning of the soldering pad.

[0007] As a further improvement of the above solution, fixing grooves are provided on both sides of the inner wall of the installation groove, and limiting grooves are provided on both sides of the limiting plate.

[0008] Through the above technical solution, the limiting groove cooperates with the clamping plate to fix the limiting plate.

[0009] As a further improvement of the above scheme, the fixing assembly includes a card plate slidably arranged inside the fixing groove and two limit rods fixedly installed on one side of the card plate. A plurality of sliding holes are opened on one side of the inner wall of the fixing groove, and one end of the two limit rods extends into the interior of adjacent sliding holes.

[0010] Through the above technical solution, the clamping plate can be moved into the limiting groove to fix the limiting plate.

[0011] As a further improvement of the above solution, each of the limit rods is sleeved with a push spring, one end of each of the push springs is fixedly mounted to the inner wall of the adjacent fixing groove, and the other end is fixedly mounted to the adjacent clamping plate.

[0012] Through the above technical solution, the pushing spring will always push the clamping plate into the limiting groove, thereby fixing the limiting plate.

[0013] As a further improvement of the above scheme, a cover plate is provided on one side of the two fixed grooves, and a sliding groove passing through the two cover plates is opened on one side of the two cover plates. A sliding block is fixedly installed on one side of each of the card plates, and one side passes through the adjacent sliding groove. The limiting component includes a connecting block fixedly installed on one side of the mounting plate and a fixing strip rotatably installed on one side of the connecting block, and one side of the fixing strip is opened with a fixing opening passing through the fixing strip.

[0014] Through the above technical solution, the sliding block can be fixed by rotating the fixing bar, thereby releasing the fixation of the clamping plate to the limiting plate.

[0015] As a further improvement of the above solution, removal grooves are provided on both sides of the installation groove, and toggle blocks are fixedly installed on both sides of the limit plate.

[0016] Through the above technical solution, the limit plate can be removed from the installation groove more quickly using the toggle block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model provides a pad component, a fixing component and a limiting component. When printing solder paste on the pad, the pad component is placed on a mounting plate, and the fixing component can be used to position and print it. The limiting component can cooperate with the fixing component to release the fixing effect, so that the pad can be quickly replaced. This arrangement allows the pad to be positioned for printing without being squeezed, and the pad component can be quickly replaced without disassembling the mounting plate, thereby improving printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model having a fixed component;

[0021] Figure 3 It is a structural schematic diagram of the utility model with a limiting plate.

[0022] Description of main symbols:

[0023] 1. Mounting plate; 201. Limiting plate; 202. Solder pad; 301. Card plate; 302. Limiting rod; 401. Connecting block; 402. Fixing bar; 5. Mounting slot; 6. Fixing slot; 7. Push spring; 8. Cover plate; 9. Sliding block; 10. Toggle block. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Please combine Figure 1-Figure 3 , a FPC circuit board pad printing solder paste positioning fixture of the present embodiment includes a mounting plate 1, one side of the mounting plate 1 is provided with a pad assembly that can be quickly disassembled and assembled, both sides of the pad assembly are provided with fixing assemblies that assist the pad assembly to be quickly fixed on the mounting plate 1, and one side of each fixing assembly is provided with a limiting assembly that releases the fixing effect of the fixing assembly, and one side of the mounting plate 1 is provided with a mounting groove 5, the pad assembly includes a limiting plate 201 that is arranged inside the mounting groove 5 and has a limiting groove, and a pad 202 that is arranged inside the limiting groove, both sides of the inner wall of the mounting groove 5 are provided with fixing grooves 6, and both sides of the limiting plate 201 are provided with limiting grooves, the pad 202 is directly placed inside the matching limiting plate 201, and the limiting plate 201 is fixed by using a fixing assembly, so as to realize the limited positioning of the pad 202.

[0026] Combination Figure 2 and Figure 3 The fixing component includes a card plate 301 slidably set inside the fixing groove 6 and two limit rods 302 fixedly installed on one side of the card plate 301. A plurality of sliding holes are opened on one side of the inner wall of the fixing groove 6. One end of the two limit rods 302 extends to the inside of the adjacent sliding holes. A push spring 7 is sleeved on each limit rod 302. One end of each push spring 7 is fixedly installed on the inner wall of the adjacent fixing groove 6, and the other end is fixedly installed on the adjacent card plate 301. The push spring 7 will keep pushing the card plate 301 into the limiting groove, thereby fixing the limit plate 201.

[0027] Combination Figure 1 and Figure 2 A cover plate 8 is provided on one side of the two fixing grooves 6, and a sliding groove penetrating through the two cover plates 8 is opened on one side. A sliding block 9 is fixedly installed on one side of each card plate 301, and one side passes through the adjacent sliding groove. The limiting component includes a connecting block 401 fixedly installed on one side of the mounting plate 1 and a fixing bar 402 rotatably installed on one side of the connecting block 401. A fixing opening penetrating through the fixing bar 402 is opened on one side of the fixing bar 402. The sliding block 9 can be fixed by rotating the fixing bar 402, thereby releasing the fixing of the card plate 301 to the limit plate 201.

[0028] Combination Figure 1 Both sides of the installation groove 5 are provided with removal grooves, and both sides of the limiting plate 201 are fixedly installed with a toggle block 10. The toggle block 10 can be used to more quickly remove the limiting plate 201 from the installation groove 5.

[0029] The implementation principle of the solder paste positioning fixture for printing solder paste on the pad of an FPC circuit board in the embodiment of the present application is as follows: when positioning the solder pad 202, the solder pad 202 is placed in the limiting groove of the matching limiting plate 201, and then the limiting plate 201 is placed in the mounting groove 5 of the mounting plate 1. The clamping plate 301 will enter the limiting groove of the limiting plate 201 under the push of the pushing spring 7 to clamp and fix the limiting plate 201. In this way, there is no need to perform additional positioning on the solder pad 202 during printing to avoid deformation of the solder pad 202 caused by the clamping positioning on both sides. When the printed solder pad 202 needs to be replaced, the two sliding blocks 9 are pulled to slide the clamping plate 301 out of the limiting groove, and then the fixing bar 402 is rotated, and the sliding block 9 is fixed using the fixing port of the fixing bar 402, and then the limiting plate 20 is fixed using the toggle block 10. 1 is taken out, and the soldering pad 202 to be printed and the limiting plate 201 adapted to the soldering pad 202 are replaced, and then the new limiting plate 201 is placed into the mounting groove 5 of the mounting plate 1. In this way, replacing the limiting plate 201 is not much slower than sliding positioning on both sides, because the traditional replacement requires the mounting plate 1 to be removed from the machine for replacement, which will waste a lot of time. By replacing only the limiting plate 201, there is no need to remove the mounting plate 1 from the machine, which saves a lot of installation time, and the installation of the limiting plate 201 is simpler and more convenient, so replacing the limiting plate 201 does not waste any time. This arrangement can not only allow the soldering pad 202 to be printed and positioned without being squeezed, but also allow the soldering pad assembly to be quickly replaced without removing the mounting plate 1, thereby improving printing efficiency.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A positioning fixture for printing solder paste on a pad of an FPC circuit board, comprising a mounting plate (1), characterized in that: One side of the mounting plate (1) is provided with a solder pad assembly that can be quickly disassembled and assembled, both sides of the solder pad assembly are provided with fixing assemblies that assist the solder pad assembly in quickly fixing on the mounting plate (1), one side of each fixing assembly is provided with a limiting assembly that releases the fixing effect of the fixing assembly, one side of the mounting plate (1) is provided with a mounting groove (5), and the solder pad assembly comprises a limiting plate (201) that is arranged inside the mounting groove (5) and has a limiting groove, and a solder pad (202) that is arranged inside the limiting groove.

2. A FPC circuit board pad printing solder paste positioning fixture as claimed in claim 1, characterized in that: Both sides of the inner wall of the installation groove (5) are provided with fixing grooves (6), and both sides of the limiting plate (201) are provided with limiting grooves.

3. A FPC circuit board pad printing solder paste positioning fixture as claimed in claim 2, characterized in that: The fixing assembly comprises a clamping plate (301) slidably arranged inside the fixing groove (6) and two limiting rods (302) fixedly installed on one side of the clamping plate (301); a plurality of sliding holes are opened on one side of the inner wall of the fixing groove (6); one end of the two limiting rods (302) extends to the inside of adjacent sliding holes.

4. A FPC circuit board pad printing solder paste positioning fixture as claimed in claim 3, characterized in that: A push spring (7) is sleeved on each of the limit rods (302), one end of each of the push springs (7) is fixedly mounted on the inner wall of the adjacent fixing groove (6), and the other end is fixedly mounted on the adjacent clamping plate (301).

5. The FPC circuit board pad printing solder paste positioning fixture as claimed in claim 3, characterized in that: A cover plate (8) is provided on one side of the two fixing grooves (6), and a sliding groove penetrating through the cover plates (8) is provided on one side of the two fixing grooves. A sliding block (9) is fixedly installed on one side of each of the clamping plates (301), and one side of the sliding block passes through an adjacent sliding groove. The limiting component comprises a connecting block (401) fixedly installed on one side of the mounting plate (1) and a fixing strip (402) rotatably installed on one side of the connecting block (401), and one side of the fixing strip (402) is provided with a fixing opening penetrating through the cover plates (402).

6. The FPC circuit board pad printing solder paste positioning fixture as claimed in claim 2, characterized in that: Both sides of the installation groove (5) are provided with removal grooves, and both sides of the limiting plate (201) are fixedly installed with toggling blocks (10).

Images