Welding device for carrying liquid crystal module FPC

Abstract

The invention relates to the technical field of FPC welding, in particular to a welding device for carrying a liquid crystal module FPC, which comprises a bearing table and a bearing assembly arranged on one side of the bearing table and used for bearing a PCB, the bearing assembly comprises a clamping frame and a clamping plate movably mounted in the clamping frame, and the welding device further comprises a support arranged on the upper surface of the bearing table and used for supporting the liquid crystal module FPC. The position of the module is adjusted; according to the technical scheme, the liquid crystal module welding device has the beneficial effects that when the liquid crystal module corresponds to the screen printing frame, FPC pins correspond to PCB bonding pads, coordinate proofing is completed, and subsequent batch PCBs are welded, repeated correspondence of the module and the pins can be avoided, the error probability is reduced, the welding efficiency is improved, the production cost is reduced, and the production efficiency is improved. Through mutual cooperation of the welding dragging assembly and the lifting assembly, one end of the device can be lifted, and it is avoided that tin liquid flows to the FPC in the welding dragging process, and consequently the FPC is damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of FPC welding, in particular to a welding device for carrying an FPC of a liquid crystal module. Background Art

[0002] FPC is a printed circuit board made of polyimide or polyester film as a base material. It has the characteristics of free bending, light weight, thin thickness, and good heat dissipation. When an FPC carrying a module needs to be welded to a PCB, there are usually two ways, using hot pressing welding equipment and manual welding. Patent document CN116551287B discloses an FPC welding machine, including a base, a working surface connected to the base through a steering assembly, and a welding machine installed on the working surface; a clamping assembly, mounted on the working surface, for clamping and fixing the FPC board; a driving assembly, mounted on the working surface, connected to the clamping assembly, for driving the clamping assembly to rotate; an adjusting assembly, mounted on the working surface, connected to the driving assembly, for driving the driving assembly to rise and fall, and then adjusting the clamping range of the clamping assembly. This application has the function of clamping and fixing FPC boards of different specifications, which improves the versatility of the instrument and enables the instrument to adapt to the welding of FPC boards of different specifications.

[0003] However, during welding, not only the FPC but also the PCB needs to be fixed. In addition, the LCD module needs to be aligned with the silk screen frame on the PCB during welding. Otherwise, it is easy for the module to squeeze the components on the PCB. When welding in batches, each adjustment takes time, reducing welding efficiency. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a welding device for carrying a liquid crystal module FPC, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A welding device for carrying a liquid crystal module FPC, comprising a carrying platform and a carrying assembly disposed on one side of the carrying platform for carrying a PCB, the carrying assembly comprising a clamping frame and a clamping plate movably mounted in the clamping frame, and further comprising:

[0006] A bracket, provided on the upper surface of the carrier platform, for adjusting the position of the module;

[0007] The clamping assembly is movably mounted on the bracket and is used to clamp the module. After the PCB and FPC are fixed, by flipping the clamping assembly and moving the bracket, the module and the silk screen frame are aligned, and the module coordinates can be accurately determined to improve the subsequent welding efficiency.

[0008] Preferably, a calibration component is further included, which includes a first adjustment slot opened on the bracket, and a threaded pressure rod movably installed in the first adjustment slot, wherein the upper thread is connected to the threaded pressure rod.

[0009] Preferably, the bracket is further provided with a second adjustment slot, in which an adjustment stud is movably installed, and both ends of the outer surface of the adjustment stud are threadedly connected with adjustment nuts.

[0010] Preferably, a pressing assembly is further included, the pressing assembly including a cross slot provided on the threaded pressing rod, and a cantilever movably mounted in the cross slot, one end of the cantilever being movably mounted with a pressing block.

[0011] Preferably, the end of the cantilever away from the pressing block is of segmented clamping type, and a bayonet is provided on the cross groove.

[0012] Preferably, a drag welding assembly is also included, which includes a guide module, an adjustment module and a placement module. The guide module includes a rotating shaft movably mounted with the clamping frame, and a slide rail fixedly mounted on the top of the rotating shaft. A third slider is movably mounted on the slide rail, and a drag welding frame is provided on the third slider which is rotatable via a self-locking rotating shaft.

[0013] Preferably, the adjustment module includes a fourth slider movably mounted on the drag welding frame, and a mounting frame fixed on the fourth slider, a mounting groove is provided inside the mounting frame, an adjustment spring is provided in the mounting groove, and an adjustment block is fixedly connected to the adjustment spring.

[0014] Preferably, the mounting module includes a movable shaft movably installed with the adjustment block, and a mounting frame is fixedly installed on the other end of the movable shaft. Both sides of the inner cavity of the mounting frame are fixedly connected to limit springs, and the other end of the limit spring is fixedly connected to the limit frame.

[0015] Preferably, the bottom of the supporting platform and the clamping frame are fixedly installed with connecting parts, the connecting parts at the bottom of the clamping frame are movably installed with supporting legs, the connecting parts at the bottom of the supporting platform are movably installed with telescopic legs, and the outer surface of the telescopic legs is movably installed with telescopic sleeves.

[0016] Preferably, it also includes a lifting assembly, which includes a transmission mechanism fixedly mounted on the bottom of the rotating shaft, and a lifting piece arranged on the transmission mechanism. An extension rod is provided on one side of the telescopic leg, and a ball head is fixedly mounted on the other end of the extension rod, and the ball head is in movably contact with the lifting piece.

[0017] In the above technical solution, the beneficial effect of the present invention is: by matching the liquid crystal module and the silk screen frame, matching the FPC pins and the PCB pads, and completing the coordinate proofing, it is possible to avoid repeated matching of modules and pins during subsequent batches of PCB welding, thereby reducing the probability of error and improving welding efficiency. By cooperating with the drag soldering component and the lifting component, one end of the device can be lifted to avoid the tin liquid from flowing to the FPC during the drag soldering process, causing damage to it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the present invention Figure 1 ;

[0019] Figure 2 Schematic diagram of the structure of the present invention Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the present invention in use;

[0021] Figure 4 It is a schematic diagram of the three-dimensional explosion structure of the bearing component of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the calibration component and the pressing component of the present invention;

[0023] Figure 6 Schematic diagram of the specific structure of the calibration component of the present invention;

[0024] Figure 7 It is a schematic diagram of the exploded structure of the calibration component of the present invention;

[0025] Figure 8 This is a schematic diagram of the three-dimensional explosion structure of the cantilever of the present invention;

[0026] Figure 9 This is a schematic structural diagram of a drag soldering assembly according to the present invention;

[0027] Figure 10 It is a structural schematic diagram of the lifting assembly of the present invention;

[0028] Figure 11 It is a schematic diagram of the state structure of the present invention corresponding to the pad operation.

[0029] In the figure: 1. Carrying platform; 11. Bracket; 2. Clamping frame; 21. Clamping plate; 22. First slider; 23. First slide groove; 24. Push-pull rod; 25. Second slider; 26. Second slide groove; 27. First positioning nut; 28. Fixing frame; 29. Support stud; 210. Step; 3. First adjusting slot; 31. Adjusting block; 32. Threaded pressure rod; 33. Second adjusting slot; 34. Adjusting stud; 35. Adjusting nut; 4. Cross slot; 41. Cantilever; 42. Pressure block; 43. Bayonet pin; 5. Rotating shaft; 51. Second positioning nut; 52. Slide rail; 53. Third slider; 54. Drag welding frame; 55. Fourth slider; 56. Limit bolt; 57. Mounting frame; 58. Mounting slot; 59. Adjustment spring; 510. Adjustment block; 511. Movable shaft; 512. Laying frame; 513. Limit spring; 514. Limit frame; 515. First movable slot; 6. Connector; 61. Support leg; 62. Telescopic leg; 63. Telescopic sleeve; 7. Extension rod; 71. Second movable slot; 72. Ball head; 73. First rotating wheel; 74. Transmission belt; 75. Second rotating wheel; 76. Lifting member. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1: Please refer to Figures 1 to 5 The present invention provides a technical solution: a welding device for carrying a liquid crystal module FPC, comprising a carrying platform 1 and a carrying assembly disposed on one side of the carrying platform 1 for carrying a PCB, the carrying assembly comprising a clamping frame 2 and a clamping plate 21 movably mounted in the clamping frame 2, and further comprising:

[0032] The bracket 11 is provided on the upper surface of the carrier 1 and is used to adjust the position of the module;

[0033] The clamping assembly is movably mounted on the bracket 11 and is used to clamp the module. After the PCB and FPC are fixed, by flipping the clamping assembly and moving the bracket 11, the module and the silk screen frame are aligned, and the module coordinates can be accurately determined to improve the subsequent welding efficiency.

[0034] Specifically, the bearing assembly also includes a first slider 22 fixedly mounted on both sides of the clamping plate 21, and a first slide groove 23 provided on both sides of the clamping frame 2 and adapted to the first slider 22. A push-pull rod 24 is fixedly mounted on the clamping plate 21, and a second slider 25 is fixedly mounted on one end of the second slider 25. A second slide groove 26 adapted to the second slider 25 is provided on the clamping frame 2. By pushing the push-pull rod 24, the first slider 22 can slide in the first slide groove 23, thereby adjusting the position of the clamping plate 21 to achieve the carrying and clamping of PCBs of different sizes. The push-pull rod 24 is fixedly mounted on one end of the second slider 25 and is also threadedly connected to a first positioning nut 27. By tightening the first positioning nut 27, it is in close contact with the surface of the clamping frame 2, which can be adjusted. The push-pull rod 24 is positioned. Since the push-pull rod 24 is fixedly connected to the clamping plate 21, the clamping plate 21 can be positioned to improve its clamping effect. The surfaces of the clamping frame 2 and the clamping plate 21 are also provided with steps 210 for carrying the PCB and improving its stability. The clamping assembly can use a bidirectional screw to drive the clamping plate to perform a clamping operation. As a preferred embodiment, in the present invention, the clamping assembly adopts a design that is different in size from the carrying assembly but has the same structure, which simplifies the operation mode and realizes the clamping of FPC liquid crystal modules of different specifications. In addition, a fixing frame 28 is fixedly installed on the clamping frame 2 of the clamping assembly, and a support stud 29 is threadedly connected to the middle part of the fixing frame 28 for supporting the clamping frame 2 of the clamping assembly to keep it level for easy installation of the liquid crystal module.

[0035] Furthermore, during use, after the LCD module is fixed, the clamping frame 2 on the clamping assembly is flipped 180 degrees, and the position of the support stud 29 is adjusted so that after the support stud 29 contacts the PCB, the LCD module remains parallel to the PCB, and then the position of the bracket 11 is adjusted according to the silk screen frame on the PCB so that the LCD module is directly above the silk screen frame. The bottom width of the bracket 11 is greater than its main body width, and double-sided tape is provided. When the LCD module and the silk screen frame correspond, the bracket 11 is positioned by tearing off the double-sided tape, thereby determining the installation coordinates of the LCD module.

[0036] Example 2: Please refer to Figures 5 to 8 、 Figure 11 , also includes a calibration component, which includes a first adjustment slot 3 opened on the bracket 11, and 31 movably installed in the first adjustment slot 3, and a threaded pressure rod 32 is threadedly connected to 31.

[0037] The bracket 11 is further provided with a second adjustment slot 33 , in which an adjustment stud 34 is movably mounted. Adjustment nuts 35 are threadedly connected at both ends of the outer surface of the adjustment stud 34 .

[0038] The device further comprises a pressing assembly, which comprises a cross slot 4 provided on the threaded pressing rod 32 and a cantilever 41 movably mounted in the cross slot 4 , with a pressing block 42 movably mounted on one end of the cantilever 41 .

[0039] One end of the cantilever 41 away from the pressing block 42 is of segmented clamping type, and a clamping pin 43 is provided on the cross slot 4.

[0040] On the basis of Example 1, when the liquid crystal module is fixed, the clamping frame 2 of the clamping assembly is reset, and then the pins on the FPC are matched with the pads on the PCB, and the pad silk screen frame is adapted. After the matching is completed, the FPC is passed through the bottom of the threaded pressure rod 32, and then the threaded pressure rod 32 is moved downward so that the threaded pressure rod 32 can bend the excess length of the FPC to bend. When the FPC is tightened, the position of the adjusting stud 34 is adjusted to support 31, and the adjusting nut 35 is tightened so that the adjusting nut 35 is in close contact with the bracket 11, and the adjusting stud 34 is limited, thereby positioning 31 and determining the FPC coordinates, as shown in the attached figure. Figure 11 As shown in the figure, a represents PCB, b represents liquid crystal module, and c represents FPC. By inserting the cantilever 41 into the cross slot 4, a latch 43 is provided above the cross slot 4, and a rubber pad is provided on the outer peripheral side of the latch 43. The deformation performance of the rubber pad is utilized to insert the latch 43 into the top of the cross slot 4 to position the cantilever 41. By adjusting the length of the segmented part of the cantilever 41, the threaded pressure rod 32 is rotated to drive the pressure block 42 to flip and fix the pins of the FPC and the two ends of the pad on the PCB. The user can weld and fix the two ends of the pad and the pin, and then reset the pressure block 42 to facilitate subsequent comprehensive welding. The segmented part of the cantilever 41 is shown in the attached figure. Figure 8 As shown, it can adapt to PCBs with different module positions.

[0041] Example 3: Please refer to Figures 1 to 4 、 Figure 9 , also includes a drag welding assembly, which includes a guide module, an adjustment module and a placement module. The guide module includes a rotating shaft 5 movably mounted on the clamping frame 2, and a slide rail 52 fixedly mounted on the top of the rotating shaft 5. A third slider 53 is movably mounted on the slide rail 52, and a drag welding frame 54 is provided on the third slider 53 through a self-locking rotating shaft.

[0042] The adjustment module includes a fourth slider 55 movably mounted on the drag welding frame 54, and a mounting frame 57 fixed on the fourth slider 55. A mounting groove 58 is provided inside the mounting frame 57, and an adjustment spring 59 is provided in the mounting groove 58. An adjustment block 510 is fixedly connected to the adjustment spring 59.

[0043] The mounting module includes a movable shaft 511 movably installed with the adjustment block 510, and a mounting frame 512 is fixedly installed on the other end of the movable shaft 511. Both sides of the inner cavity of the mounting frame 512 are fixedly connected to the limiting spring 513, and the other end of the limiting spring 513 is fixedly connected to the limiting frame 514.

[0044] The second positioning nut 51 is screwed on the outer surface of the rotating shaft 5, and the second positioning nut 51 is tightened to make it tightly connected with the upper surface of the clamping frame 2 to complete the positioning of the rotating shaft 5. Then, the position of the third slider 53 is adjusted so that when the soldering iron tip is placed between the two limit frames 514, it is directly above the soldering of the pins and the soldering pads, which can adapt to PCBs with different module positions. In addition, a bolt must be provided on the third slider 53 to position the third slider 53 on the slide rail 52. For example, a limiting bolt 56 is also screwed on the fourth slider 55 to position the fourth slider 55. When in use, the drag soldering frame 54 is rotated 90 degrees, and then the limiting bolt 56 is loosened to allow the fourth slider 55 to move, ensuring that a straight line is maintained during drag soldering to improve the welding effect. Figure 3 As shown, the soldering iron tip is then placed in two limiting frames 514 to limit the soldering iron tip and ensure its stability. By adjusting the deformation performance of the spring 59 and the first movable groove 515 provided on the mounting frame 57 and adapted to the movable shaft 511, the mounting frame 512 can be moved up and down. The height of the soldering iron tip can be adjusted according to the thickness of PCBs of different sizes, thereby improving the flexibility of drag soldering.

[0045] Furthermore, scraping blades can be provided on both sides of the limit frame 514. During the use of the soldering iron tip, its surface will oxidize. The presence of the oxide layer can easily cause the soldering iron tip to not stick to the solder. Before use, the soldering iron tip can be scraped against the scraping blades of the limit frame 514 to remove the oxide layer and improve the welding effect.

[0046] Example 4: Please refer to Figure 2 and Figure 10 The bottom of the supporting platform 1 and the clamping frame 2 are both fixedly installed with connecting parts 6, the connecting parts 6 at the bottom of the clamping frame 2 are movably installed with supporting legs 61, the connecting parts 6 at the bottom of the supporting platform 1 are movably installed with telescopic legs 62, and the outer surface of the telescopic legs 62 is movably installed with telescopic sleeves 63.

[0047] It also includes a lifting assembly, which includes a transmission mechanism fixedly mounted on the bottom of the rotating shaft 5, and a lifting member 76 arranged on the transmission mechanism. An extension rod 7 is provided on one side of the telescopic leg 62, and a ball head 72 is fixedly mounted on the other end of the extension rod 7, and the ball head 72 is in active contact with the lifting member 76.

[0048] Specifically, during the soldering process, in order to prevent the molten tin from flowing toward the FPC, users usually do not use the more efficient drag soldering, but solder gradually, and during the soldering process, the soldering iron tip moves in the direction away from the FPC. In the present invention, based on Example 3, when the rotating shaft 5 rotates, the transmission mechanism is driven. The transmission mechanism includes a first rotating wheel 73 fixedly mounted on the bottom of the rotating shaft 5, a transmission belt 74 transmission-connected to the first rotating wheel 73, and a second rotating wheel 75 transmission-connected to the other end of the transmission belt 74. The lifting member 76 is fixed to the bottom of the second rotating wheel 75. The rotation of the rotating shaft 5 drives the first rotating wheel 73 to rotate. Under the action of the transmission belt 74, the second rotating wheel 75 drives the lifting member 76 to rotate, thereby causing the lifting member 76 to lift the extension rod 7. The telescopic sleeve 63 is further provided with a second movable groove 71 adapted to the extension rod 7, which is used for the extension rod 7 to drive the telescopic leg 62 to rise, thereby lifting one end of the supporting platform 1. At this time, one end of the device is tilted, which can prevent the molten tin from flowing toward the FPC during the drag soldering process, thereby improving the drag soldering efficiency.

[0049] Furthermore, when welding is completed, flip the clamping frame 2 on the clamping assembly so that the liquid crystal module is again above the silk screen frame, then tear off the double-sided tape on the module, loosen the first positioning nut 27, and release the positioning of the module by the clamping plate 21. At this time, the step 210 is facing downward, and the module can be directly pressed into the silk screen frame to fix it.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for carrying a liquid crystal module FPC, comprising a carrier platform (1) and a carrier assembly arranged on one side of the carrier platform (1) for carrying a PCB, wherein the carrier assembly comprises a clamping frame (2) and a clamping plate (21) movably mounted in the clamping frame (2), characterized in that: Also includes: A bracket (11) is provided on the upper surface of the supporting platform (1) and is used to adjust the position of the module; The clamping assembly is movably mounted on the bracket (11) and is used to clamp the module. After the PCB and FPC are fixed, the module and the silk screen frame are aligned by flipping the clamping assembly and moving the bracket (11), and the module coordinates can be accurately determined, thereby improving the subsequent welding efficiency.

2. The welding device for carrying a liquid crystal module FPC according to claim 1, characterized in that: It also includes a calibration component, which includes a first adjustment slot (3) opened on the bracket (11), and a (31) movably installed in the first adjustment slot (3), and a threaded pressure rod (32) is threadedly connected to the (31).

3. The welding device for carrying a liquid crystal module FPC according to claim 1, characterized in that: The bracket (11) is further provided with a second adjustment slot (33), in which an adjustment stud (34) is movably mounted, and both ends of the outer surface of the adjustment stud (34) are threadedly connected with adjustment nuts (35).

4. The welding device for carrying a liquid crystal module FPC according to claim 2, characterized in that: It also includes a pressing assembly, which includes a cross slot (4) provided on the threaded pressing rod (32), and a cantilever (41) movably mounted in the cross slot (4), with a pressing block (42) movably mounted on one end of the cantilever (41).

5. The welding device for carrying a liquid crystal module FPC according to claim 4, characterized in that: One end of the cantilever (41) away from the pressing block (42) is of segmented snap-fit type, and a snap pin (43) is provided on the cross slot (4).

6. The welding device for carrying a liquid crystal module FPC according to claim 1, characterized in that: The invention also includes a drag welding assembly, which includes a guide module, an adjustment module and a mounting module. The guide module includes a rotating shaft (5) movably mounted on the clamping frame (2), and a slide rail (52) fixedly mounted on the top of the rotating shaft (5). A third slider (53) is movably mounted on the slide rail (52). A drag welding frame (54) is rotatably arranged on the third slider (53) via a self-locking rotating shaft.

7. The welding device for carrying a liquid crystal module FPC according to claim 6, characterized in that: The adjustment module comprises a fourth slider (55) movably mounted on the drag welding frame (54), and a mounting frame (57) fixed on the fourth slider (55); a mounting groove (58) is provided inside the mounting frame (57); an adjustment spring (59) is provided in the mounting groove (58); and an adjustment block (510) is fixedly connected to the adjustment spring (59).

8. The welding device for carrying a liquid crystal module FPC according to claim 7, characterized in that: The mounting module comprises a movable shaft (511) movably mounted on the adjustment block (510); a mounting frame (512) is fixedly mounted on the other end of the movable shaft (511); both sides of the inner cavity of the mounting frame (512) are fixedly connected to limit springs (513); and the other end of the limit spring (513) is fixedly connected to the limit frame (514).

9. The welding device for carrying a liquid crystal module FPC according to claim 1, characterized in that: The bottoms of the supporting platform (1) and the clamping frame (2) are both fixedly mounted with connecting pieces (6), the connecting piece (6) at the bottom of the clamping frame (2) is movably mounted with supporting legs (61), the connecting piece (6) at the bottom of the supporting platform (1) is movably mounted with telescopic legs (62), and the outer surface of the telescopic legs (62) is movably mounted with telescopic sleeves (63).

10. The welding device for carrying a liquid crystal module FPC according to claim 9, characterized in that: It also includes a lifting assembly, which includes a transmission mechanism fixedly mounted on the bottom of the rotating shaft (5), and a lifting member (76) arranged on the transmission mechanism, an extension rod (7) is arranged on one side of the telescopic leg (62), and a ball head (72) is fixedly mounted on the other end of the extension rod (7), and the ball head (72) is in active contact with the lifting member (76).

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