Flexible circuit board welding jig

Abstract

The utility model discloses a flexible circuit board welding jig which comprises a base, a welding mechanism is arranged on the base, the welding mechanism comprises a lifting air cylinder, a limiting frame, a pushing air cylinder, a connecting frame and a welding device, a flexible supporting mechanism is arranged on the welding device, and the flexible supporting mechanism comprises an installation sleeve, a supporting ring, a flexible supporting rod, an abutting block and a compression spring. The installation sleeve is installed on the outer wall of the welding device, the supporting ring is installed on the inner wall of the installation sleeve, the multiple sets of flexible supporting rods are installed on the supporting ring in a sliding mode, the abutting blocks are installed on the outer walls of the multiple sets of flexible supporting rods, and the compression springs are installed on the multiple sets of abutting blocks and connected with the supporting ring. Through guiding of the flexible supporting rod by the limiting sleeve and flexible contact of the air bag at the bottom end, deformation and wrinkles of the circuit board in the welding process are avoided, uniform supporting force is provided, and the problem that the circuit board is prone to bending deformation in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of electronic product manufacturing technology, and more specifically, it relates to a flexible circuit board welding fixture. Background Technology

[0002] In existing technologies, flexible circuit boards require precise welding operations during the manufacturing process of electronic products to ensure reliable connection of electronic components. Existing welding equipment usually uses a simple clamping method to fix the flexible circuit board. This fixing method cannot effectively control the flatness of the flexible circuit board and is prone to deformation and wrinkles during the clamping process, which affects the subsequent welding quality.

[0003] In actual welding operations, due to the inherent bending and deformation characteristics of flexible circuit boards, relying solely on single-point clamping cannot provide sufficient support. When the welding head contacts the surface of the circuit board, localized stress can cause uneven deformation of the circuit board, which not only affects the positional accuracy of the solder joints but may also cause quality problems such as incomplete soldering and cold soldering. At the same time, due to the lack of an effective support structure, operators cannot guarantee that the circuit board maintains the same flatness during each welding operation, which seriously affects product consistency and production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides a flexible circuit board welding fixture to solve the technical problem mentioned in the background art that it is difficult for operators to ensure that the circuit board maintains the same flatness every time it is welded.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flexible circuit board welding fixture, comprising a base, on which a welding mechanism is provided. The welding mechanism includes a lifting cylinder, a limiting frame, a pushing cylinder, a connecting frame, and a welding device. The lifting cylinder is mounted on the base, the limiting frame is mounted on the telescopic end of the lifting cylinder, the pushing cylinder is mounted on one side of the limiting frame, the connecting frame is mounted on the telescopic end of the pushing cylinder, and the welding device is mounted on the top of the connecting frame. The welding device is provided with a flexible support mechanism, which includes a mounting sleeve, a support ring, flexible support rods, a stop block, and a compression spring. The mounting sleeve is mounted on the outer wall of the welding device, the support ring is mounted on the inner wall of the mounting sleeve, multiple sets of flexible support rods are slidably mounted on the support ring, the stop block is mounted on the outer wall of the multiple sets of flexible support rods, and the compression spring is mounted on the multiple sets of stop blocks and connected to the support ring.

[0008] The present invention is further configured such that a slide rail is installed on the limiting frame, and a slider is installed on the bottom surface of the connecting frame. The slider is slidably installed on the slide rail to ensure the horizontal movement accuracy of the welder and improve the movement stability.

[0009] The present invention is further configured such that a limiting sleeve is provided at the bottom end of the mounting sleeve, and multiple sets of the limiting sleeve are provided and slidably connected to multiple sets of the flexible support rods respectively, so as to ensure the accuracy of the movement trajectory of the flexible support rods and improve the stability of the support.

[0010] The present invention is further configured such that airbags are installed at the bottom ends of the multiple sets of flexible support rods to achieve flexible buffering, avoid damage to the circuit board, and provide uniform support force.

[0011] The present invention is further configured such that an adjustment mechanism is provided on the base, the adjustment mechanism including a mounting platform, a shaft seat, a turntable, a positioning groove and a drive mechanism, the mounting platform is mounted on the base, the shaft seat is mounted on the mounting platform, the turntable is mounted on the shaft seat, and the positioning groove is set on the turntable. Through the cooperation of the mounting platform, the shaft seat and the turntable, the workpiece is automatically and accurately rotated, and multiple sets of evenly distributed positioning grooves provide stable workpiece positioning.

[0012] The present invention is further configured such that the driving mechanism includes a mounting frame, a motor, a driving wheel, a driven wheel, and a transmission belt. The mounting frame is mounted on a mounting platform, the motor is mounted on the mounting frame, the driving wheel is mounted on the output end of the motor, the driven wheel is mounted on the bottom end of the shaft seat, and the transmission belt is disposed on the outer wall of the driving wheel and the driven wheel to achieve smooth power transmission and ensure the stability of the turntable rotation.

[0013] The present invention is further configured such that multiple sets of positioning grooves are distributed on the top surface of the turntable, and the angles between the multiple sets of positioning grooves are set to be equal, so as to ensure uniform distribution of each workstation and improve positioning accuracy and work efficiency.

[0014] The present invention is further provided with a brake between the mounting bracket and the motor output end to ensure the positioning accuracy of the turntable and prevent position deviation.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a flexible circuit board welding fixture, which has the following advantages:

[0017] 1. By coordinating the lifting cylinder, the limiting frame, and the pushing cylinder, the welding device is precisely positioned in three-dimensional space. The guide structure formed by the slide rail on the limiting frame and the slider at the bottom of the connecting frame ensures the stability and accuracy of the lateral movement. This design not only provides stable support but also achieves high-precision positioning of the welding position, effectively solving the problem of inaccurate welding positioning in existing technologies.

[0018] 2. The design employs a combination of mounting sleeves, support rings, and multiple sets of flexible struts, along with the elastic support of abutment blocks and compression springs, to achieve all-round flexible support for the flexible circuit board. Through the guidance of the flexible struts by the limiting sleeve and the flexible contact of the bottom airbag, not only is deformation and wrinkling of the circuit board during the welding process avoided, but also uniform support force is provided, solving the problem of easy bending and deformation of circuit boards in existing technologies. At the same time, this self-adjusting design ensures the flatness of the circuit board during the welding process, significantly improving the welding quality.

[0019] 3. Through the cooperation of the mounting platform, shaft seat and turntable, combined with the transmission system consisting of motor, drive wheel, driven wheel and transmission belt, the workpiece is automatically and accurately rotated. Multiple sets of evenly distributed positioning slots provide stable workpiece positioning. With the braking function of the brake, not only is the positioning accuracy of the turntable ensured, but positional deviation caused by inertia is also prevented. This design realizes automatic switching of welding stations, improves production efficiency, and at the same time ensures the accuracy and consistency of each welding position. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a flexible circuit board welding fixture according to the present invention;

[0021] Figure 2 This is a schematic diagram of the welding mechanism in this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the flexible support mechanism in this utility model;

[0023] Figure 4 This is a schematic diagram of the drive mechanism in this utility model;

[0024] Figure 5 This is a schematic diagram of the mounting bracket in this utility model.

[0025] In the diagram: 1. Base; 2. Lifting cylinder; 3. Limiting frame; 4. Pushing cylinder; 5. Connecting frame; 6. Welding machine; 7. Mounting sleeve; 8. Support ring; 9. Flexible support rod; 10. Abutment block; 11. Compression spring; 12. Slide rail; 13. Slider; 14. Limiting sleeve; 15. Airbag; 16. Mounting platform; 17. Shaft seat; 18. Turntable; 19. Positioning groove; 20. Mounting frame; 21. Motor; 22. Drive wheel; 23. Driven wheel; 24. Transmission belt; 25. Brake. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A flexible circuit board welding fixture includes a base 1, on which a welding mechanism is provided. The welding mechanism includes a lifting cylinder 2, a limiting frame 3, a pushing cylinder 4, a connecting frame 5, and a welding device 6. The lifting cylinder 2 is mounted on the base 1, the limiting frame 3 is mounted on the telescopic end of the lifting cylinder 2, the pushing cylinder 4 is mounted on one side of the limiting frame 3, the connecting frame 5 is mounted on the telescopic end of the pushing cylinder 4, and the welding device 6 is mounted on the top of the connecting frame 5. The welding device is provided with a flexible support mechanism, which includes a mounting sleeve 7, a support ring 8, a flexible support rod 9, a stop block 10, and a compression spring 11. The mounting sleeve 7 is mounted on the outer wall of the welding device 6, the support ring 8 is mounted on the inner wall of the mounting sleeve 7, multiple sets of flexible support rods 9 are slidably mounted on the support ring 8, the stop block 10 is mounted on the outer wall of the multiple sets of flexible support rods 9, and the compression spring 11 is mounted on the multiple sets of stop blocks and connected to the support ring 8.

[0030] The limiting frame 3 is equipped with a slide rail 12, and the bottom surface of the connecting frame 5 is equipped with a slider 13. The slider 13 is slidably mounted on the slide rail 12. The slide rail 12 and the slider 13 form a linear guide mechanism. The connecting frame 5 can move smoothly on the slide rail 12 through the slider 13, and the limiting frame 3 provides stable support.

[0031] The bottom of the mounting sleeve 7 is provided with a limiting sleeve 14. Multiple sets of limiting sleeves 14 are provided and are slidably connected to multiple sets of flexible support rods 9 respectively. The limiting sleeves 14 provide guidance for the flexible support rods 9, and the multiple sets of limiting sleeves 14 form a sliding engagement with the corresponding flexible support rods 9 respectively.

[0032] Each set of flexible struts 9 is equipped with an airbag 15 at its bottom end. The airbag 15 is installed at the bottom end of the flexible strut 9 and provides flexible contact through the elastic deformation of the airbag 15.

[0033] In this embodiment, the circuit board is first placed on the adjusting mechanism for intermittent position changes. Then, the extension end of the cylinder 4 is pushed to move the connecting frame 5. The connecting frame 5 moves laterally along the slide rail 12 via the slider 13 and the lifting cylinder 2 drives the limiting frame 3 to move longitudinally. Through the cooperation of the pushing cylinder 4 and the lifting cylinder 2, the welding device 6 is precisely positioned. When the welding device 6 is about to contact the circuit board, multiple sets of airbags 15 contact the surface of the circuit board, pushing multiple sets of flexible support rods 9 to slide under the guidance of the support ring 8. The abutment 10 on each flexible support rod 9 cooperates with the compression spring 11 to provide appropriate support force. The limiting sleeve 14 ensures the movement trajectory of the flexible support rod 9, and the airbag 15 at the bottom provides flexible contact to avoid damage to the circuit board. When the welding device 6 is pressed down, the flexible support mechanism can adaptively adjust according to the slight undulations of the circuit board surface to ensure uniform contact pressure, thereby flexibly limiting the area around the welding point of the circuit board.

[0034] Please see Figures 4-5 As one implementation of the adjustment mechanism: an adjustment mechanism is provided on the base 1. The adjustment mechanism includes a mounting platform 16, a bearing seat 17, a turntable 18, a positioning groove 19 and a drive mechanism. The mounting platform 16 is mounted on the base 1, the bearing seat 17 is mounted on the mounting platform 16, the turntable 18 is mounted on the bearing seat 17, and the positioning groove 19 is provided on the turntable 18.

[0035] The drive mechanism includes a mounting frame 20, a motor 21, a drive wheel 22, a driven wheel 23, and a transmission belt 24. The mounting frame 20 is mounted on the mounting platform 16, the motor 21 is mounted on the mounting frame 20, the drive wheel 22 is mounted on the output end of the motor 21, the driven wheel 23 is mounted on the bottom end of the bearing seat 17, and the transmission belt 24 is disposed on the outer wall of the drive wheel 22 and the driven wheel 23. The motor 21 drives the transmission belt 24 through the drive wheel 22, and the transmission belt 24 drives the driven wheel 23 to rotate, thereby driving the bearing seat 17 to rotate.

[0036] Multiple positioning grooves 19 are provided on the top surface of the turntable 18. The angles between the multiple positioning grooves 19 are set to be equal. Multiple positioning grooves 19 are evenly distributed on the turntable 18 to form a station positioning structure with equal angle distribution.

[0037] A brake 25 is provided between the mounting bracket 20 and the output end of the motor 21. The brake 25 is installed between the output end of the motor 21 and the mounting bracket 20, and controls the rotation through braking.

[0038] More specifically, the starter motor 21 drives the drive wheel 22 to rotate, which in turn drives the driven wheel 23 to rotate via the transmission belt 24. The driven wheel 23 drives the shaft seat 17 to rotate, thereby causing the turntable 18 to rotate at a precise angle. Multiple evenly distributed positioning slots 19 provide multiple workstations. The brake 25 ensures positioning accuracy. When the motor 21 drives the drive wheel 22 to rotate, the brake 25 can be controlled to achieve precise positioning of the turntable 18. After the turntable 18 rotates to the predetermined position, the brake 25 is activated to prevent the turntable 18 from shifting due to inertia or external force, thus ensuring the accuracy of the welding position. The entire mechanism can achieve automatic workpiece rotation and precise positioning, improving welding efficiency.

[0039] In summary, during the use or operation of the overall equipment: First, the circuit board is placed on the adjusting mechanism for intermittent position changes. Then, the extension end of the cylinder 4 is pushed to move the connecting frame 5. The connecting frame 5 moves laterally along the slide rail 12 via the slider 13. The lifting cylinder 2 drives the limiting frame 3 to move longitudinally. Through the cooperation of the pushing cylinder 4 and the lifting cylinder 2, the welding device 6 is precisely positioned. When the welding device 6 is about to contact the circuit board, multiple sets of airbags 15 contact the surface of the circuit board, pushing multiple sets of flexible support rods 9 to slide under the guidance of the support ring 8. The abutment 10 on each flexible support rod 9 cooperates with the compression spring 11 to provide appropriate support force. The limiting sleeve 14 ensures the movement trajectory of the flexible support rod 9, while the airbags 15 at the bottom provide flexible contact to avoid damaging the circuit board. When the welding device 6 is pressed down, the flexible support mechanism can adaptively adjust according to the slight undulations of the circuit board surface to ensure uniform contact pressure, thereby flexibly limiting the area around the welding point of the circuit board.

[0040] The starter motor 21 drives the drive wheel 22 to rotate, which in turn drives the driven wheel 23 to rotate via the transmission belt 24. The driven wheel 23 drives the shaft seat 17 to rotate, thereby causing the turntable 18 to rotate at a precise angle. Multiple evenly distributed positioning slots 19 provide multiple workstations. The brake 25 ensures positioning accuracy. When the motor 21 drives the drive wheel 22 to rotate, the brake 25 can be controlled to achieve precise positioning of the turntable 18. After the turntable 18 rotates to the predetermined position, the brake 25 is activated to prevent the turntable 18 from shifting due to inertia or external force, thus ensuring the accuracy of the welding position. The entire mechanism can achieve automatic workpiece rotation and precise positioning, improving welding efficiency.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flexible circuit board welding fixture, comprising a base (1), characterized in that: A welding mechanism is provided on the base (1). The welding mechanism includes a lifting cylinder (2), a limiting frame (3), a pushing cylinder (4), a connecting frame (5), and a welder (6). The lifting cylinder (2) is installed on the base (1). The limiting frame (3) is installed on the telescopic end of the lifting cylinder (2). The pushing cylinder (4) is installed on one side of the limiting frame (3). The connecting frame (5) is installed on the telescopic end of the pushing cylinder (4). The welder (6) is installed on the top of the connecting frame (5). The upper part is provided with a flexible support mechanism, which includes a mounting sleeve (7), a support ring (8), a flexible support rod (9), a stop block (10) and a compression spring (11). The mounting sleeve (7) is installed on the outer wall of the welding machine (6), the support ring (8) is installed on the inner wall of the mounting sleeve (7), the flexible support rod (9) is provided with multiple sets slidingly mounted on the support ring (8), the stop block (10) is installed on the outer wall of multiple sets of the flexible support rod (9), and the compression spring (11) is installed on multiple sets of the stop blocks and connected to the support ring (8).

2. The flexible circuit board welding fixture according to claim 1, characterized in that: The limiting frame (3) is equipped with a slide rail (12), and the bottom surface of the connecting frame (5) is equipped with a slider (13), which is slidably mounted on the slide rail (12).

3. The flexible circuit board welding fixture according to claim 2, characterized in that: The bottom end of the mounting sleeve (7) is provided with a limiting sleeve (14), and the limiting sleeve (14) is provided in multiple sets and is slidably connected to multiple sets of the flexible support rods (9).

4. The flexible circuit board welding fixture according to claim 3, characterized in that: Airbags (15) are installed at the bottom of each of the multiple sets of flexible support rods (9).

5. A flexible circuit board welding fixture according to claim 4, characterized in that: The base (1) is provided with an adjustment mechanism, which includes a mounting platform (16), a bearing seat (17), a turntable (18), a positioning groove (19), and a drive mechanism. The mounting platform (16) is mounted on the base (1), the bearing seat (17) is mounted on the mounting platform (16), the turntable (18) is mounted on the bearing seat (17), and the positioning groove (19) is located on the turntable (18).

6. A flexible circuit board welding fixture according to claim 5, characterized in that: The drive mechanism includes a mounting frame (20), a motor (21), a drive wheel (22), a driven wheel (23), and a transmission belt (24). The mounting frame (20) is mounted on a mounting platform (16), the motor (21) is mounted on the mounting frame (20), the drive wheel (22) is mounted on the output end of the motor (21), the driven wheel (23) is mounted on the bottom end of a bearing seat (17), and the transmission belt (24) is disposed on the outer wall of the drive wheel (22) and the driven wheel (23).

7. A flexible circuit board welding fixture according to claim 6, characterized in that: The positioning groove (19) is provided in multiple sets distributed on the top surface of the turntable (18), and the angle between the multiple sets of positioning grooves (19) is set to be equal.

8. A flexible circuit board welding fixture according to claim 7, characterized in that: A brake (25) is provided between the mounting bracket (20) and the output end of the motor (21).

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