Flexible circuit board welding mechanism

Abstract

This utility model discloses a flexible circuit board welding mechanism, including an operating table and welding equipment fixedly installed on the top of the operating table. A centrally located rectangular opening is provided on the top of the operating table. A flip-fixing assembly is movably installed inside the rectangular opening. A support plate is fixedly installed on the lower inner side of the operating table, and a support assembly is fixedly installed on the top of the support plate. This flexible circuit board welding mechanism, by rotating a handwheel according to the size of the flexible circuit board, drives a bidirectional lead screw to rotate, causing the left and right clamping mechanisms to move in opposite directions. After the two clamping mechanisms slide inward to adjust the spacing to fit the flexible circuit board, the flexible circuit board is fixed by placing both ends within the clamping mechanisms. A support block is attached to the bottom of the flexible circuit board to provide stable support. Therefore, it can be flexibly adjusted and fixed according to different sizes of the flexible circuit board, effectively reducing limitations and improving flexibility.

Description

Technical Field

[0001] This utility model relates to the field of circuit board welding technology, specifically a flexible circuit board welding mechanism. Background Technology

[0002] Flexible printed circuit boards (FPCBs) are printed circuits made from flexible insulating substrates. Flexible circuits offer excellent electrical performance, meeting the design needs for smaller and higher-density installations, and also help reduce assembly steps and enhance reliability. They can be freely bent, rolled, and folded, and can withstand millions of dynamic bends without damaging the conductors. They can be arranged arbitrarily according to spatial layout requirements and can move and stretch freely in three-dimensional space, thus achieving integration of component assembly and conductor connection. During the soldering process of flexible printed circuit boards, it is usually necessary to flip the board after soldering on one side.

[0003] The existing patent authorization announcement number CN221337339U discloses a flexible circuit board welding device. The device involves flipping a pressure frame to place the circuit board inside the placement frame, and then gently releasing the pressure frame to slowly press it against the edge of the circuit board. The return force of the torsion spring makes the pressure frame fit tightly against the circuit board, thus positioning the circuit board. When the circuit board needs to be flipped after single-sided welding is completed, the motor is started. The motor rotates and drives the second rotating shaft to rotate, which in turn drives the placement frame to rotate, thereby flipping the circuit board.

[0004] In the aforementioned patent, the dimensions of the placement frame and the pressure frame are fixed. The flexible circuit board is positioned between the placement frame and the pressure frame for limitation. The placement frame and the pressure frame cannot be adjusted, thus making it impossible to limit and fix flexible circuit boards of different sizes, which has limitations and reduces flexibility. Utility Model Content

[0005] The purpose of this utility model is to provide a flexible circuit board welding mechanism to solve the problem in the background art where the dimensions of the placement frame and the pressure frame are fixed, the flexible circuit board is positioned between the placement frame and the pressure frame and cannot be adjusted, thus making it impossible to limit and fix flexible circuit boards of different sizes, which has limitations and reduces flexibility.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flexible circuit board welding mechanism, comprising an operating table and welding equipment fixedly installed on the top of the operating table. The top of the operating table has a centrally located rectangular opening. A flip-fixing assembly is movably installed inside the rectangular opening. A support plate is fixedly installed below the inner side of the operating table, and a support assembly is fixedly installed on the top of the support plate. The flip-fixing assembly includes a rectangular frame and a servo motor. Rotating shafts are fixedly connected to both sides of the rectangular frame, and the rotating shafts are rotatably connected to the inner side of the rectangular opening. The servo motor is fixedly installed on the top of the operating table and connected to the rotating shafts. An installation groove is provided inside the rectangular frame. A bidirectional lead screw symmetrically arranged front and rear is rotatably installed inside the installation groove. A handwheel is fixedly connected to one end of the bidirectional lead screw, and a synchronous pulley is fixedly installed at the end of the bidirectional lead screw away from the handwheel. A synchronous belt is movably installed outside the synchronous pulley. A clamping mechanism symmetrically arranged on the left and right sides and located within the installation groove is threaded onto the external of the bidirectional lead screw.

[0007] Preferably, the clamping mechanism includes a sliding plate, a clamping groove is provided on the inner side of the sliding plate, a threaded rod is threadedly connected to the top of the sliding plate, a pressure plate located in the clamping groove is movably installed at the bottom of the threaded rod, and a guide post penetrating the top of the pressure plate is fixedly connected to the top of the pressure plate.

[0008] Preferably, the outer side of the rectangular frame has a slot corresponding to the timing pulley and the timing belt.

[0009] Preferably, an anti-slip pad is provided between the clamping groove and the pressure plate.

[0010] Preferably, the support assembly includes a guide frame fixedly installed on the top of the support plate, a threaded rod II rotatably installed inside the guide frame, a drive motor connected to the threaded rod II fixedly installed on the outside of the guide frame, a slide block locked inside the guide frame on the outside of the threaded rod II, a stroke electric cylinder fixedly installed on the top of the slide block, and a support block located directly below the rectangular opening fixedly installed on the top of the stroke electric cylinder.

[0011] Preferably, the support block is attached to the bottom of the operating table, and the width of the top surface of the support block is adapted to the inner width of the rectangular frame.

[0012] Preferably, the length of the guide frame matches the length of the rectangular frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By rotating the handwheel according to the size of the flexible circuit board, the bidirectional lead screw is driven to rotate. Through the synchronous pulley and synchronous belt drive, the bidirectional lead screw on the other side is driven to rotate, causing the left and right clamping mechanisms to move in opposite directions. After the clamping mechanisms on both sides slide inward to adjust the spacing to fit the flexible circuit board, the two ends of the flexible circuit board are fixed in the clamping mechanism. The support block is attached to the bottom of the flexible circuit board to provide stable support. Thus, it can be flexibly adjusted and fixed according to different sizes of the flexible circuit board, effectively reducing limitations and improving flexibility.

[0015] 2. The extension and retraction of the control stroke electric cylinder can drive the support block to move up and down, which can avoid obstructing the rectangular frame and push the support block against the bottom of the rectangular frame to provide stable support. The drive motor drives the threaded rod to rotate, which drives the slide to move laterally. The slide drives the stroke electric cylinder and the support block on top to slide. The position of the support block under the flexible circuit board can be flexibly adjusted according to the change of welding position, so as to make it flexible to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is an exploded view of the structure of the flip-fixing assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the support component of this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the support block of this utility model when it is attached to the bottom of the flip-fixing component.

[0021] In the diagram: 1. Operating table; 2. Welding equipment; 3. Rectangular opening; 4. Flip-and-fix assembly; 41. Rectangular frame; 42. Rotating shaft; 43. Servo motor; 44. Mounting slot; 45. Two-way lead screw; 46. Handwheel; 47. Synchronous pulley; 48. Synchronous belt; 49. Clamping mechanism; 491. Slide plate; 492. Clamping slot; 493. Pressure plate; 494. Threaded rod one; 495. Guide column; 5. Support plate; 6. Support assembly; 61. Guide frame; 62. Threaded rod two; 63. Drive motor; 64. Slide; 65. Stroke electric cylinder; 66. Support block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a technical solution: a flexible circuit board welding mechanism, including an operating table 1 and a welding device 2 fixedly installed on the top of the operating table 1. A centrally located rectangular opening 3 is provided on the top of the operating table 1. A flip-fixing assembly 4 is movably installed inside the rectangular opening 3. A support plate 5 is fixedly installed on the lower inner side of the operating table 1, and a support assembly 6 is fixedly installed on the top of the support plate 5. The flip-fixing assembly 4 includes a rectangular frame 41 and a servo motor 43. Rotating shafts 42 are fixedly connected to both sides of the rectangular frame 41, and the rotating shafts 42 are rotatably connected to the inner side of the rectangular opening 3. The servo motor 43 is fixedly installed on the top of the operating table 1 and connected to the rotating shafts 42. An installation groove 44 is provided inside the rectangular frame 41. A bidirectional lead screw 45 symmetrically arranged front and rear is rotatably installed inside the installation groove 44. A handwheel 46 is fixedly connected to one end of the bidirectional lead screw 45, and a synchronous pulley 47 is fixedly installed at the end of the bidirectional lead screw 45 away from the handwheel 46. The synchronous pulley 47 is movably installed on the outside. The flexible circuit board is equipped with a synchronous belt 48 and a bidirectional lead screw 45. The external thread of the lead screw 45 is connected to a clamping mechanism 49 symmetrically arranged in the mounting groove 44. The handwheel 46 is rotated according to the size of the flexible circuit board. When the handwheel 46 rotates, it drives the connected bidirectional lead screw 45 to rotate in the mounting groove 44, and at the same time drives the synchronous pulley 47 at the other end to rotate, thereby driving the synchronous belt 48 outside the synchronous pulley 47 to move. The bidirectional lead screw 45 in the front and rear sections of the mounting groove 44 achieves synchronous rotation through the transmission of the synchronous pulley 47 and the synchronous belt 48, which drives the two sets of clamping mechanisms 49 symmetrically arranged in the mounting groove 44 to move towards each other. After the clamping mechanisms 49 on both sides slide inward to adjust the spacing to fit the flexible circuit board, the flexible circuit board is placed between the clamping mechanisms 49 on both sides for fixation. The servo motor 43 is controlled to drive the rotating shaft 42 to rotate, and the rotating shaft 42 drives the rectangular frame 41 to rotate to flip the flexible circuit board. This allows for flexible adjustment and fixation according to the size of the flexible circuit board, improving the flexibility of use.

[0024] The clamping mechanism 49 includes a slide plate 491, with a clamping groove 492 on the inner side of the slide plate 491. A threaded rod 494 is threadedly connected to the top of the slide plate 491, and a pressure plate 493 located in the clamping groove 492 is movably installed at the bottom of the threaded rod 494. A guide post 495 penetrating the top of the slide plate 491 is fixedly connected to the top of the pressure plate 493. After the clamping mechanisms 49 on both sides slide and adjust the distance to fit the flexible circuit board, the flexible circuit board is placed between the clamping grooves 492 on both sides. Then, the threaded rod 494 above the two slide plates 491 is rotated respectively to push the pressure plate 493 down, thereby pressing the flexible circuit board and fixing it. The guide post 495 can move synchronously with the pressure plate 493 to provide a guiding and limiting function, preventing the pressure plate 493 from shifting.

[0025] The outer side of the rectangular frame 41 has slots corresponding to the synchronous pulley 47 and the synchronous belt 48. Both the synchronous pulley 47 and the synchronous belt 48 are located within the slots, which effectively protects the operating environment of the synchronous pulley 47 and the synchronous belt 48, ensuring a smoother and more reliable transmission between them. The slots also facilitate observation of the working status of the synchronous pulley 47 and the synchronous belt 48, allowing for timely detection of potential problems and adjustment or replacement.

[0026] An anti-slip pad is provided between the clamping groove 492 and the pressure plate 493. The anti-slip pad is made of a material with a high coefficient of friction, which can effectively increase the friction between the pad and the flexible circuit board, prevent the circuit board from sliding or shifting during the welding process, and also act as a buffer to prevent the pressure plate 493 from damaging the surface of the flexible circuit board, thus ensuring that the welding operation is safer and more reliable.

[0027] Please see Figure 4 and Figure 5 The support assembly 6 includes a guide frame 61 fixedly mounted on the top of the support plate 5. A threaded rod 62 is rotatably mounted inside the guide frame 61. A drive motor 63 connected to the threaded rod 62 is fixedly mounted on the outside of the guide frame 61. A slide block 64, which is locked inside the guide frame 61, is threadedly connected to the outside of the threaded rod 62. A stroke cylinder 65 is fixedly mounted on the top of the slide block 64. A support block 66 located directly below the rectangular opening 3 is fixedly mounted on the top of the stroke cylinder 65. When the stroke cylinder 65 retracts, it can drive the support block 66 to move downward to avoid obstructing the rectangular frame 41. When the stroke cylinder 65 extends, it can push the support block 66 against the bottom of the rectangular frame 41 to provide support and improve stability. The drive motor 63 drives the threaded rod 62 to rotate, causing the slide block 64 to move laterally. The slide block 64 then drives the stroke cylinder 65 and the support block 66 on its top to slide synchronously, thereby flexibly adjusting the position of the support block 66 under the flexible circuit board according to the change of the welding position, allowing for flexible use.

[0028] The support block 66 is attached to the bottom of the operating table 1. The width of the top surface of the support block 66 is adapted to the width of the inner side of the rectangular frame 41. When the support block 66 is attached to the bottom of the operating table 1, it can ensure a tight fit with the inner side of the rectangular frame 41, thereby providing a stable support effect, improving the stability of the flexible circuit board during the welding process, and effectively reducing the risk of position displacement caused by external force.

[0029] The length of the guide frame 61 matches the length of the rectangular frame 41, ensuring coordination between the two during operation. This precise length matching allows the guide frame 61 to provide stable guidance as the slide 64 moves, ensuring the support block 66 can be flexibly positioned between the clamping mechanisms 49 inside the rectangular frame 41. This facilitates stable support at the bottom when soldering flexible circuit boards of different sizes.

[0030] Working principle: By rotating the handwheel 46 according to the size of the flexible circuit board, the handwheel 46 drives the bidirectional lead screw 45 connected to it to rotate in the mounting groove 44, which in turn drives the synchronous wheel 47 at the other end to rotate, thereby driving the synchronous belt 48 outside the synchronous wheel 47 to move. The bidirectional lead screw 45 in the front and rear parts of the mounting groove 44 achieves synchronous rotation through the synchronous wheel 47 and the synchronous belt 48, driving the two clamping mechanisms 49 symmetrically arranged on the left and right sides of the mounting groove 44 to move in opposite directions. After the clamping mechanisms 49 on both sides slide inward to adjust the distance to fit the flexible circuit board, the flexible circuit board is placed between the clamping grooves 492 on both sides, and the threaded rod 494 above the two sliding plates 491 is rotated to push the pressure plate 493 down to press the flexible circuit board, thus completing the fixation of the flexible circuit board; the control support block 66 is attached to the bottom of the flexible circuit board to provide stable support;

[0031] The flexible circuit board is welded by operating the welding equipment 2. At the same time, the drive motor 63 can be controlled to drive the threaded rod 62 in the guide frame 61 to rotate according to the change of the welding position. The rotation of the threaded rod 62 drives the slide block 64 to drive the stroke cylinder 65 and the support block 66 on the top of the stroke cylinder 65 to slide laterally. The position of the support block 66 under the flexible circuit board can be flexibly adjusted according to the change of the welding position.

[0032] When the flexible circuit board needs to be flipped after welding one side, the stroke cylinder 65 is controlled to retract, causing the support block 66 to move downwards to avoid obstructing the rectangular frame 41. Then, the servo motor 43 is controlled to drive the rotating shaft 42 to rotate, which in turn drives the rectangular frame 41 to flip the flexible circuit board. Finally, the stroke cylinder 65 drives the support block 66 to extend and reset, positioning it below the rectangular frame 41 to provide support and improve stability.

[0033] The above describes the entire working process of the device. Any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible circuit board welding mechanism, comprising an operating table (1) and welding equipment (2) fixedly installed on the top of the operating table (1), characterized in that: The top of the operating table (1) has a centrally located rectangular opening (3), and a flip-fixed assembly (4) is movably installed inside the rectangular opening (3). A support plate (5) is fixedly installed on the lower inner side of the operating table (1), and a support assembly (6) is fixedly installed on the top of the support plate (5). The flipping and fixing assembly (4) includes a rectangular frame (41) and a servo motor (43). The left and right sides of the rectangular frame (41) are fixedly connected to a rotating shaft (42). The rotating shaft (42) is rotatably connected to the inside of the rectangular opening (3). The servo motor (43) is fixedly installed on the top of the operating table (1). The servo motor (43) is connected to the rotating shaft (42). The rectangular frame (41) has an installation groove (44) inside. The installation groove (44) is rotatably installed with a bidirectional lead screw (45) arranged symmetrically in front and behind. One end of the bidirectional lead screw (45) is fixedly connected to a handwheel (46). The end of the bidirectional lead screw (45) away from the handwheel (46) is fixedly installed with a synchronous pulley (47). The synchronous pulley (47) is movably installed with a synchronous belt (48). The external thread of the bidirectional lead screw (45) is connected to a clamping mechanism (49) arranged symmetrically in the installation groove (44).

2. The flexible circuit board welding mechanism according to claim 1, characterized in that: The clamping mechanism (49) includes a sliding plate (491), a clamping groove (492) is provided on the inner side of the sliding plate (491), a threaded rod (494) is threadedly connected to the top of the sliding plate (491), a pressure plate (493) located in the clamping groove (492) is movably installed at the bottom of the threaded rod (494), and a guide post (495) penetrating the top of the sliding plate (491) is fixedly connected to the top of the pressure plate (493).

3. The flexible circuit board welding mechanism according to claim 1, characterized in that: The outer side of the rectangular frame (41) has slots corresponding to the synchronous pulley (47) and the synchronous belt (48).

4. The flexible circuit board welding mechanism according to claim 2, characterized in that: An anti-slip pad is provided between the clamping groove (492) and the pressure plate (493).

5. The flexible circuit board welding mechanism according to claim 1, characterized in that: The support assembly (6) includes a guide frame (61) fixedly installed on the top of the support plate (5). A threaded rod (62) is rotatably installed inside the guide frame (61). A drive motor (63) connected to the threaded rod (62) is fixedly installed on the outside of the guide frame (61). A slide (64) is threadedly connected to the outside of the threaded rod (62) and is locked inside the guide frame (61). A stroke electric cylinder (65) is fixedly installed on the top of the slide (64). A support block (66) located directly below the rectangular opening (3) is fixedly installed on the top of the stroke electric cylinder (65).

6. The flexible circuit board welding mechanism according to claim 5, characterized in that: The support block (66) is attached to the bottom of the operating table (1), and the width of the top surface of the support block (66) is adapted to the inner width of the rectangular frame (41).

7. The flexible circuit board welding mechanism according to claim 5, characterized in that: The length of the guide frame (61) matches the length of the rectangular frame (41).

Images