Automatic overlapping equipment for flexible circuit board

Abstract

The invention relates to automatic overlapping equipment for a flexible circuit board, and relates to the technical field of automatic equipment. Comprising a mechanical arm, a positioning mechanism, a roller conveying table and a laminating mechanism, a laminating table is driven to reciprocate through the roller conveying table, accurate positioning is achieved through the positioning mechanism, and the laminating process is stable and reliable in cooperation with unique design of a driving assembly, a connecting rod assembly and a balance rod. And a conveying roller and a laminating roller in the laminating mechanism work cooperatively, so that accurate lamination of the copper foil is effectively completed. The technical effects of improving the lamination precision, enhancing the production efficiency and reducing the failure rate are achieved, and the processing quality and the automation level of the flexible circuit board are remarkably improved.

Description

Technical Field

[0001] This application relates to the technical field of automated equipment, and particularly to a flexible circuit board automatic laminating device. Background Art

[0002] Flexible circuit board automatic laminating devices are widely used in the electronics manufacturing industry. With the trend of miniaturization and integration of electronic products, flexible circuit boards have become indispensable key components due to their thin, light, and bendable characteristics. In the production process, the laminating process is one of the important links to ensure the functionality of multi-layer flexible circuit boards. An efficient and stable laminating device can not only improve production efficiency but also effectively ensure the consistency of product quality, playing an important role in enhancing the competitiveness of enterprises.

[0003] Currently, the laminating operation of flexible circuit boards in the industry mainly relies on robotic arms cooperating with laminating tables to complete automated processing. Common solutions include but are not limited to the following methods: one is to use a servo motor to drive a lead screw transmission system to drive the laminating table to move along a linear guide; the second is to use a belt or chain drive structure combined with position sensor feedback to adjust the moving distance of the laminating table; the third is to use a cylinder push-pull mechanism to quickly switch the material placement points between different processes. Although these traditional methods can meet the basic requirements to a certain extent, there are still many limitations.

[0004] However, there is a common problem in the above-mentioned commonly used technical means, that is, it is difficult to achieve the precise stop of the laminating table at the designated station. Especially in the case of high-precision copper foil attachment, the inaccurate positioning of the laminating table will directly affect the quality stability of the final product. Therefore, how to improve this situation has become an urgent technical problem to be solved. Summary of the Invention

[0005] To solve the above problems, this application provides a flexible circuit board automatic laminating device.

[0006] The flexible circuit board automatic laminating device provided by this application adopts the following technical solutions: A flexible circuit board automatic laminating device includes a robotic arm, a positioning mechanism, a roller conveyor table, and a laminating mechanism. A laminating table driven by the roller conveyor table and performing reciprocating motion is arranged on the roller conveyor table, and the positioning mechanism is installed on the roller conveyor table and used to position the laminating table.

[0007] By adopting the above technical solutions, the flexible circuit board automatic laminating device can realize the reciprocating motion of the laminating table on the roller conveyor table and ensure the accurate positioning of the laminating table through the positioning mechanism. This design effectively solves the problem of insufficient copper foil laminating accuracy caused by the inability of the laminating table to stop precisely in the prior art, and improves the reliability and efficiency of the entire laminating process.

[0008] Preferably, the roller conveyor platform includes a frame, a conveyor roller is rotatably arranged on the frame, the stacking platform is placed on the top of the conveyor roller, the positioning mechanism includes a driving assembly, the driving assembly includes a driving motor and a driving shaft, a sprocket is installed on the driving shaft, and the sprocket is connected to the conveyor roller through a chain.

[0009] By adopting the above technical solution, the stable transmission and precise control of the roller conveyor table are achieved. By placing the stacking table on top of the conveyor roller and using the drive motor to drive the chain transmission connection between the sprocket on the drive shaft and the conveyor roller, the stacking table can be ensured to reciprocate smoothly and efficiently. This design not only improves the stability of the stacking table operation, but also lays the foundation for subsequent precise positioning.

[0010] Preferably, a friction wheel is also installed on the driving shaft, and the positioning mechanism also includes a connecting rod assembly and a balance rod. The connecting rod assembly includes a connecting rod body, and both ends of the connecting rod body are respectively provided with a hinge joint and a clamping joint. The connecting rod body is hinged to the end of the balance rod through the hinge joint. The connecting rod assembly also includes an eccentric wheel fixedly mounted on the driving shaft, and the clamping joint is clamped and fixed to the eccentric wheel.

[0011] By adopting the above technical solution, accurate positioning can be achieved during the reciprocating motion of the lamination table. Installing a friction wheel on the drive shaft can increase the stability during the transmission process; the design of the connecting rod assembly allows the balance rod and the eccentric wheel to work together, and the periodic action of the eccentric wheel is used to drive the connecting rod body to move when the drive shaft rotates, thereby ensuring that the lamination table stops accurately at the target position. This design effectively solves the problem of inaccurate positioning caused by insensitive brakes in traditional equipment, and significantly improves the accuracy and efficiency of the copper foil lamination process.

[0012] Preferably, a friction block for braking the friction wheel is fixedly arranged on the balance bar.

[0013] By adopting the above technical solution, the friction block fixed on the balance bar can effectively stop the friction wheel, thereby ensuring that the lamination table stops accurately at the specified position. The interaction between the friction block and the friction wheel achieves an efficient braking effect, avoids the problem of stopping position deviation caused by inertia of the lamination table, significantly improves the positioning accuracy of the equipment, and meets the demand for accurate positioning of the lamination table during the copper foil lamination process.

[0014] Preferably, a counterweight block is fixedly provided on the end of the balance bar opposite to the friction block, a rear stopper is fixedly provided on the top of the counterweight block, and the rear stopper is located in the gap of the conveying roller.

[0015] By adopting the above technical solution, setting a counterweight on the balance rod can effectively adjust the torque balance of the entire positioning mechanism, ensure that the friction block applies a stable braking force to the friction wheel, and thus improve the stability and accuracy when the laminating table brakes. The rear stop rod is located in the gap between the conveying rollers and plays a limiting role during the operation of the laminating table, further improving the accuracy of the stop position of the laminating table.

[0016] Preferably, a front stop rod is fixedly arranged on the eccentric wheel, and one end of the front stop rod far from the eccentric wheel extends into the gap between the conveying rollers.

[0017] By adopting the above technical solution, the front stop rod fixedly arranged on the eccentric wheel can effectively limit the movement range of the conveying rollers. When one end of the front stop rod far from the eccentric wheel extends into the gap between the conveying rollers, during the reciprocating movement of the laminating table, the over-rotation or position deviation of the conveying rollers can be prevented by physical blocking, thereby improving the stop accuracy of the laminating table between the copper foil laminating station and the robotic arm loading station. This design helps to ensure the accuracy of the copper foil laminating process and reduce product quality problems caused by inaccurate positioning of the laminating table.

[0018] Preferably, the positioning mechanism further includes a control component, and the control component includes a counting controller and a terminal block, and the counting controller is electrically connected to the terminal block.

[0019] By adopting the above technical solution, the function of accurately positioning the laminating table is realized. The counting controller can accurately record the working times or position information of the driving component, and through the electrical connection with the terminal block, signal transmission and control instruction sending are realized, so as to ensure that the positioning mechanism triggers the braking action at the appropriate time, improve the stop accuracy of the laminating table between the copper foil laminating station and the robotic arm loading station, and effectively solve the problem of copper foil laminating accuracy caused by the inability of the laminating table to stop accurately.

[0020] Preferably, a transfer shaft is fixedly arranged on the outer shell of the counting controller, the transfer shaft is made of conductive metal material, the balance rod is hinged on the transfer shaft, and the balance rod is made of conductive metal material.

[0021] By adopting the above technical solution, the electrical connection function between the counting controller and the connecting rod body is realized. The transfer shaft is made of conductive metal material, and the connecting rod body is also made of conductive metal material. The two cooperate to ensure the effective transmission of electrical signals. This design simplifies the wiring structure, improves the overall integration and reliability of the equipment, and is convenient for real-time monitoring of the working state of the driving component, thereby further improving the positioning accuracy and operation stability of the flexible circuit board automatic laminating equipment.

[0022] Preferably, the terminal block is also electrically connected to the drive motor. A conductive terminal shaft is fixedly arranged on the terminal block, and the conductive terminal shaft is in movable abutment with the connecting rod body.

[0023] By adopting the above technical solution, the electrical signal transmission between the positioning mechanism and the drive motor is realized. The terminal block is electrically connected to the drive motor, ensuring the effective transmission of control signals; the design of the conductive terminal shaft in movable abutment with the connecting rod body can maintain stable electrical contact during the movement of the connecting rod assembly, thereby improving the positioning accuracy and enhancing the reliability of the system. This design effectively solves the problem that the stopping position of the laminating table is inaccurate during reciprocating movement, and improves the accuracy of copper foil lamination.

[0024] Preferably, the laminating mechanism includes a conveying roller for conveying the copper foil and a laminating roller for laminating the copper foil.

[0025] By adopting the above technical solution, the flexible circuit board automatic laminating equipment can realize the efficient lamination operation of the copper foil. The conveying roller is responsible for stably conveying the copper foil to the designated position, while the laminating roller ensures that the copper foil is flat and firmly attached between the flexible circuit boards. This design effectively improves the accuracy and efficiency of copper foil lamination, avoids errors that may be caused by manual operation, reduces material waste at the same time, and improves the automation level and product quality of the entire lamination process.

[0026] In summary, the present application includes at least the following beneficial technical effects: 1. By arranging a positioning mechanism on the roller conveyor table, the laminating table can be accurately positioned, effectively solving the problem that the stopping position of the laminating table is inaccurate between the copper foil lamination station and the robotic arm loading station; 2. By utilizing the synergistic effect of the drive assembly and the positioning mechanism, the braking accuracy of the laminating table is improved, thereby meeting the requirements of high-precision copper foil lamination and avoiding product quality problems caused by position deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of the present application; Figure 2 and Figure 3 is a perspective view of the roller conveyor table; Figure 4 is a specific structural view of the positioning mechanism.

[0028] Description of the reference numerals: 1. Robot arm; 2. Roller conveyor table; 21. Frame body; 211. Conveyor roller; 22. Laminating table; 3. Balance rod; 31. Counterweight; 32. Rear stop bar; 33. Friction block; 41. Link body; 411. Hinge joint; 412. Clamping joint; 42. Eccentric wheel; 43. Front stop bar; 52. Drive shaft; 53. Friction wheel; 54. Sprocket; 61. Counting controller; 611. Adapter shaft; 62. Terminal block; 63. Conductive end shaft; 71. Laminating roller; 72. Conveyor roller. Detailed implementation manners

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0031] An embodiment of the present application discloses a flexible circuit board automatic lamination device. Referring to Figure 1 、 Figure 2 、and Figure 3 , it includes a robot arm 1, a positioning mechanism, a roller conveyor table 2, and a laminating mechanism. A laminating table 22 driven by the roller conveyor table 2 and performing reciprocating motion is provided on the roller conveyor table 2. The positioning mechanism is installed on the roller conveyor table 2 and is used for positioning the laminating table 22. The roller conveyor table 2 includes a frame body 21. The frame body 21 serves as the basic frame of the entire roller conveyor table 2 and has good load-bearing capacity and anti-deformation ability. A conveyor roller 211 is rotatably provided above the frame body 21. The laminating table 22 is placed on the top of the conveyor roller 211. The positioning mechanism includes a driving assembly. The driving assembly includes a driving motor and a drive shaft 52. A sprocket 54 is installed on the drive shaft 52. The sprocket 54 is in transmission connection with the conveyor roller 211 through a chain. The driving motor drives the conveyor roller 211 through chain drive, so that the conveyor roller 211 has the transportation ability. The robot arm 1 accurately places the flexible circuit board on the laminating table 22 according to the pre-programmed position coordinates to ensure that it is placed flat and centered. The laminating mechanism includes a conveyor roller 72 for conveying the copper foil and a laminating roller 71 for laminating the copper foil.

[0032] Referring to Figure 4, a friction wheel 53 is also installed on the drive shaft 52. The positioning mechanism further includes a connecting rod assembly and a balance rod 3. The connecting rod assembly includes a connecting rod body 41. Hinge joints 411 and clamping joints 412 are respectively arranged at both ends of the connecting rod body 41. The connecting rod body 41 is hinged to the end of the balance rod 3 through the hinge joint 411. The connecting rod assembly further includes an eccentric wheel 42 fixedly installed on the drive shaft 52, and the clamping joint 412 is fixedly clamped with the eccentric wheel 42. A friction block 33 for braking the friction wheel 53 is fixedly arranged on the balance rod 3. Relying on a preset pressure value, the friction block 33 is urged to quickly approach the friction wheel 53 rotating at high speed. The two collide violently to generate a huge resistance and instantaneously consume most of the kinetic energy until it comes to a complete stop. A counterweight 31 is fixedly arranged at one end of the balance rod 3 opposite to the friction block 33. A rear stop rod 32 is fixedly arranged on the top of the counterweight 31, and the rear stop rod 32 is located in the gap between the conveying rollers 211. A front stop rod 43 is fixedly arranged on the eccentric wheel 42, and one end of the front stop rod 43 away from the eccentric wheel 42 extends into the gap between the conveying rollers 211. The front stop rod 43 and the rear stop rod 32 are used to respectively clamp and limit both ends of the stacking table 22, so as to achieve the technical effect of accurately stopping the stacking table 22.

[0033] The positioning mechanism further includes a control component. The control component includes a counting controller 61 and a terminal block 62. The counting controller 61 is electrically connected to the terminal block 62. A transfer shaft 611 is fixedly arranged on the outer shell of the counting controller 61. The transfer shaft 611 is made of conductive metal. The balance rod 3 is hinged to the transfer shaft 611, and the balance rod 3 is made of conductive metal. The terminal block 62 is also electrically connected to the drive motor. A conductive end shaft 63 is fixedly arranged on the terminal block 62, and the conductive end shaft 63 is in movable contact with the connecting rod body 41. The counting controller 61 is connected to the power supply and internally provided with counting and control circuits.

[0034] The implementation principle of the embodiments of this application is as follows: The robotic arm 1 is used to place the first flexible circuit board on the laminating table 22. During this process, the robotic arm 1 precisely places the flexible circuit board on the laminating table 22 according to the pre-programmed position coordinates, ensuring that it is flat and centered. The roller conveyor table 2 drives the laminating table 22 to move towards the copper foil laminating station. During this period, the conveyor rollers 211 rotate smoothly and drive the laminating table 22 to travel along a predetermined track through chain drive. At the same time, the positioning mechanism starts to prepare to receive the upcoming laminating table 22 to ensure accurate positioning. When the laminating table 22 reaches near the copper foil laminating station, the positioning mechanism activates the braking system to quickly stop the laminating table 22. At this time, the eccentric wheel 42 drives the balance bar 3 to press the friction block 33 tightly against the friction wheel 53 through the connecting rod assembly, and uses the generated powerful braking torque to quickly stop the laminating table 22 and keep it stable. The laminating mechanism starts to work. First, the conveyor roller 72 sends a piece of copper foil of a suitable size that has been cut to the laminating area, and then the laminating roller 71 evenly presses and covers it on the existing flexible circuit board to form a tightly bonded layer. After completing one film laminating process, repeat the above operations to stack multiple flexible circuit boards in sequence and alternately insert copper foils between them until the required number of layers is finally stacked. Then switch back to the initial position again and wait for the next cycle to arrive to continue a new round of operation process.

[0035] The positioning process of the positioning mechanism is as follows: In the initial state of the balance rod 3, the rear stop rod 32 is buried in the gap between the two conveying rollers 211. Since one end of the balance rod 3 is a counterweight 31 with a relatively large weight, and the transfer shaft 611 is hinged at the middle position of the balance rod 3, the balance rod 3 will naturally tilt towards the direction of the counterweight 31. Therefore, the bottom of the conductive end shaft 63 abuts against the top of the rod body of the balance rod 3 to maintain the horizontal posture of the balance rod 3. The front stop rod 43 extends into the gap between the conveying rollers 211, and in the normal state, the height of the front stop rod 43 protrudes above the top of the conveying rollers 211. When the laminating table 22 is normally transported to the bottom of the laminating roller 71, one end of the laminating table 22 will exactly collide with the front stop rod 43, causing the front stop rod 43 to move downward. When the front stop rod 43 moves downward, it will cause the eccentric wheel 42 to rotate, and then drive the friction block 33 to move downward through the connecting rod body 41, so that the friction block 33 is engaged with the friction wheel 53 and brakes the friction wheel 53. Since the friction wheel 53 is fixedly arranged on the drive shaft 52, after the friction wheel 53 is braked, the drive shaft 52 and the drive motor will be braked together. During the braking process, in order to protect the internal components of the drive motor, the drive motor needs to be powered off before braking. Since both the transfer shaft 611 and the conductive end shaft 63 have electrical conductivity. The counting controller 61 is connected to the power supply and is internally provided with a counting circuit. Since the counting controller 61 is also electrically connected to the terminal block 62, and the terminal block 62 is electrically connected to the drive motor. Therefore, before the friction wheel 53 is braked, one end of the balance rod 3 close to the friction wheel 53 will be pulled downward by the connecting rod body 41, separating the balance rod 3 from the conductive end shaft 63, thereby disconnecting the circuit of the drive motor and performing power-off protection on the drive motor before braking. The front stop rod 43 will move downward until the friction wheel 53 is braked. After the friction wheel 53 is braked, the front stop rod 43 will no longer move downward, but at this time, the front stop rod 43 can still abut against the laminating table 22 and limit it. The rear stop rod 32 will be lifted by the seesaw effect generated when the balance rod 3 tilts downward, and when it rises, it can limit the rear end of the laminating table 22, thereby preventing the laminating table 22 from rebounding after collision. After the front stop rod 43 precisely stops the laminating table 22, the laminating roller 71 performs copper foil attachment. The counting circuit provided inside the technical controller can detect the voltage of the terminal block 62 depending on the electrical connection with the terminal block 62, and make the drive motor rotate in the reverse direction during the next conduction process of the drive motor when the voltage changes, so that the conveying roller 211 transports the laminating table 22 in the reverse direction, ensuring that the laminating table 22 can return from the laminating position to the loading position of the robotic arm 1. During the copper foil attachment process, the counterweight 31 will use its own gravity to make the balance rod 3 return to the balanced state again, that is, the balance rod 3 abuts against the conductive end shaft 63, and the drive motor circuit is connected. However, due to the control intervention of the counting controller 61, the drive motor will run after an interval. The purpose of the interval is to reserve enough time for copper foil attachment.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A flexible circuit board automatic lamination device, characterized in that: The invention comprises a mechanical arm (1), a positioning mechanism, a roller conveying platform (2) and a laminating mechanism. The roller conveying platform (2) is provided with a superimposing platform (22) which is driven by the roller conveying platform (2) and performs reciprocating motion. The positioning mechanism is installed on the roller conveying platform (2) and is used to position the superimposing platform (22).

2. The automatic flexible circuit board lamination device according to claim 1, characterized in that: The roller conveyor platform (2) comprises a frame (21), a conveyor roller (211) is rotatably arranged on the frame (21), the stacking platform (22) is placed on the top of the conveyor roller (211), and the positioning mechanism comprises a driving assembly, the driving assembly comprises a driving motor and a driving shaft (52), a sprocket (54) is installed on the driving shaft (52), and the sprocket (54) is connected to the conveyor roller (211) through a chain.

3. The automatic flexible circuit board lamination device according to claim 2, characterized in that: A friction wheel (53) is also mounted on the driving shaft (52). The positioning mechanism further comprises a connecting rod assembly and a balancing rod (3). The connecting rod assembly comprises a connecting rod body (41). Both ends of the connecting rod body (41) are respectively provided with a hinge joint (411) and a clamping joint (412). The connecting rod body (41) is hinged to the end of the balancing rod (3) via the hinge joint (411). The connecting rod assembly further comprises an eccentric wheel (42) fixedly mounted on the driving shaft (52). The clamping joint (412) is clamped and fixed to the eccentric wheel (42).

4. The automatic flexible circuit board lamination device according to claim 3 is characterized in that: A friction block (33) for braking the friction wheel (53) is fixedly arranged on the balance bar (3).

5. The automatic flexible circuit board lamination device according to claim 4, characterized in that: A counterweight block (31) is fixedly arranged on the end of the balance bar (3) opposite to the friction block (33), a rear stopper (32) is fixedly arranged on the top of the counterweight block (31), and the rear stopper (32) is located in the gap of the conveying roller (211).

6. The automatic flexible circuit board lamination device according to claim 3, characterized in that: A front blocking rod (43) is fixedly arranged on the eccentric wheel (42), and one end of the front blocking rod (43) away from the eccentric wheel (42) extends into the gap of the conveying roller (211).

7. The automatic flexible circuit board lamination device according to claim 3 is characterized in that: The positioning mechanism further comprises a control component, wherein the control component comprises a counting controller (61) and a wiring terminal block (62), and the counting controller (61) is electrically connected to the wiring terminal block (62).

8. The automatic flexible circuit board lamination device according to claim 7, characterized in that: A transfer shaft (611) is fixedly arranged on the outer shell of the counting controller (61), and the transfer shaft (611) is configured to be made of a conductive metal material. The balance bar (3) is hingedly mounted on the transfer shaft (611), and the balance bar (3) is configured to be made of a conductive metal material.

9. The automatic flexible circuit board lamination device according to claim 8, characterized in that: The terminal block (62) is also electrically connected to the drive motor. A conductive end shaft (63) is fixedly arranged on the terminal block (62), and the conductive end shaft (63) is movably abutted against the connecting rod body (41).

10. The automatic flexible circuit board lamination device according to claim 1, characterized in that: The laminating mechanism comprises a conveying roller (72) for conveying copper foil and a laminating roller (71) for laminating copper foil.

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