Dispensing mechanism for flexible circuit board and chip

Abstract

The utility model discloses a kind of dispensing mechanism of flexible circuit board and chip, including workbench, camera module and mounting plate slidingly connected on workbench;Rotary module is slidingly connected on the mounting plate, and the lower end of the rotary module is provided with a chip-moving head;Dispensing head is slidingly connected on the mounting plate;Synchronous belt is provided on the mounting plate;Lead screw is rotatably connected on the mounting plate;T-shaped groove is provided on the mounting plate;Three sensors are provided on the T-shaped groove.Only one driving mechanism is set, and the chip-moving head and dispensing head can be driven simultaneously to complete the specified function.The motion structure and driving mechanism are simplified, and the overall structure is simple, compact and centralized, easy to produce and manufacture.The fixed T-shaped hanging seat and sliding adjustment seat make the synchronous belt movement more accurate, and the high-precision operation of chip handling and dispensing is easily realized.The camera module is also provided, which ensures the assembly accuracy of the chip and improves the compatibility of the chip placement position.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board dispensing technology, and particularly relates to a dispensing mechanism for flexible circuit boards and chips. Background Technology

[0002] The core of flexible printed circuit boards (FPCs) and chip dispensing lies in achieving three key objectives: fixation, protection, and reinforcement, through specialized adhesives (such as UV adhesives, epoxy adhesives, and silicone adhesives). This approach leverages the flexibility, thinness, and susceptibility to environmental and stress-related factors of FPCs, while simultaneously addressing reliability challenges arising from chip-FPC interconnection. Because FPCs are typically small and thin products, and chips are even smaller, they are difficult to move manually and require precise mechanical mechanisms for movement. Similarly, the dispensing process for both FPCs and chips demands high positional accuracy and precise mechanical structures for precise positioning.

[0003] Chinese patent document CN210386395U discloses a flexible circuit board dispensing device, including a base and a support frame. A movable block is provided on the top surface of the base, and a circuit board fixing frame is mounted on the top of the movable block. The circuit board fixing frame, located on top of the movable block, allows for easy sliding opening of the protective cover of the circuit board fixing frame during dispensing operations through symmetrically arranged sliding grooves. The interlocking of dispensing ports on the protective cover effectively prevents damage to other components of the circuit board due to overheating of the dispensing device during the dispensing process, thus providing excellent protection for the circuit board. Furthermore, the interaction of multiple electric telescopic rods with the clamping blocks ensures uniform clamping and fixing of the dispensing circuit board. This device is suitable for clamping and fixing circuit boards of different sizes, improving the stability of the dispensing operation and increasing the quality of the dispensing.

[0004] In the automated pressing operation of flexible circuit boards, the aforementioned patented solution requires not only dispensing the flexible circuit board and chip but also transporting them to a designated location, necessitating an additional transport mechanism. However, the transport and dispensing processes cannot be performed simultaneously. If separate motion mechanisms are used for each, the entire automated device becomes complex, and production costs increase accordingly. Therefore, simply repurposing the dispensing device does not constitute an ideal technical solution. Utility Model Content

[0005] To overcome the technical problem that existing flexible circuit board (PCB) automatic lamination equipment uses two independent drive mechanisms for the PCB and chip handling and dispensing mechanisms, resulting in complex equipment structure and high production costs, this invention aims to provide a dispensing mechanism for PCBs and chips. By setting the handling and dispensing mechanisms on a single synchronous belt and located on opposite sides, only one drive structure is needed to simultaneously control the movement of both mechanisms. This simplifies the motion mechanism, resulting in a simpler overall structure and lower production costs.

[0006] To achieve the above objectives, this utility model employs the following technical solution: a dispensing mechanism for flexible circuit boards and chips, comprising a worktable, a camera module mounted on the worktable, and a mounting plate horizontally slidably connected above the worktable; a rotating module is slidably connected longitudinally to the mounting plate, and a chip shifting head is provided at the lower end of the moving end of the rotating module; the chip shifting head can selectively move to directly above the camera module; a dispensing head is slidably connected longitudinally to the mounting plate; a synchronous belt is provided on the mounting plate for transmission connection with the dispensing head and the chip shifting head; the sliding direction of the chip shifting head is opposite to the sliding direction of the dispensing head; wherein, a lead screw for driving the dispensing head to slide is rotatably connected to the mounting plate; a T-slot is provided on the mounting plate; three sensors for monitoring the position of the dispensing head are provided on the T-slot.

[0007] Furthermore, a fixed wheel is rotatably connected to the upper part of the mounting plate; an adjusting seat is slidably connected longitudinally to the mounting plate directly below the fixed wheel, and a sliding wheel is rotatably connected to the adjusting seat; the timing belt is disposed between the fixed wheel and the sliding wheel; the adjusting seat is provided with two locking grooves respectively located on the upper and lower sides of the sliding wheel, and the length direction of the locking grooves is arranged longitudinally.

[0008] Specifically, a T-shaped bracket perpendicular to the mounting plate is provided at the upper center of the mounting plate; the fixed wheel is rotatably connected to the T-shaped bracket; a motor base is provided between the T-shaped bracket and the mounting plate; a lead screw motor is provided at the upper end of the motor base; and the lead screw is provided on the output shaft of the lead screw motor.

[0009] Specifically, the lower end of the mounting plate is provided with a threaded seat; an adjusting screw is threadedly connected to the threaded seat; the end of the adjusting screw is rotatably connected to the adjusting seat.

[0010] The timing belt is tensioned between the fixed wheel and the sliding wheel, ensuring the motion accuracy between the dispensing head and the shifting head; it also reduces the number of drive mechanisms and simplifies the motion mechanism.

[0011] Furthermore, a fixed bracket is provided on the worktable; an adjustment plate is slidably connected to the fixed bracket; a knob for driving the adjustment plate to slide is threaded onto the fixed bracket; the camera module is located at the lower part of the adjustment plate; and a ring light source is provided on the upper part of the adjustment plate directly above the camera module.

[0012] The camera module is used to confirm the information and adjust the position of the chip on the chip shifter. The rotation module rotates and adjusts the chip according to the information provided by the camera module, and then installs it onto the flexible circuit board.

[0013] Furthermore, the mounting plate is provided with two parallel slide rails in the longitudinal direction, and the two slide rails are respectively located on both sides of the synchronous belt; each slide rail is slidably connected with a sliding seat, and one of the sliding seats is provided with a screw nut that is threadedly connected to the screw; the rotating module and the dispensing head are respectively located on the two sliding seats.

[0014] Specifically, the sliding seat has a notch at one end facing the slide rail; a first adapter plate that is slidably connected to the slide rail is provided in the notch; a second adapter plate is provided at the end of the sliding seat away from the slide rail, and the rotating module and the dispensing head are respectively provided on the corresponding second adapter plates.

[0015] Specifically, the sliding seat sidewall is detachably connected to a clamping plate; the timing belt is disposed between the sliding seat and the corresponding clamping plate.

[0016] Preferably, the lower end of the transfer head is longitudinally slidably connected to an elastic nozzle; the lower end of the elastic nozzle is provided with a negative pressure adsorption hole; and a spring is provided between the elastic nozzle and the transfer head to allow the elastic nozzle to slide downward.

[0017] The negative pressure adsorption hole is used to adsorb the chip. The spring keeps the lower end of the elastic nozzle pressed against the chip surface, thus ensuring the effect of negative pressure adsorption. At the same time, it also protects the chip and prevents the downward pressure of the chip transfer head from being too great, avoiding damage to the chip.

[0018] Furthermore, a platform is provided on the workbench; an X-axis motion module is provided on the workbench above the platform; a Z-axis motion module is provided on the moving end of the X-axis motion module; and the mounting plate is provided on the moving end of the X-axis motion module.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model is used for transporting chips and dispensing adhesive onto flexible circuit boards. The chip transfer head and the dispensing head are respectively located on both sides of the synchronous belt. Only one drive mechanism is required to simultaneously drive the chip transfer head and the dispensing head to complete the intended functions. The motion structure and drive mechanism are simplified, and the overall structure is simple, compact, and easy to produce and manufacture.

[0021] 2. This utility model is equipped with a fixed T-shaped bracket and a sliding adjustment seat, which makes the synchronous belt movement more precise and facilitates high-precision chip handling and dispensing operations. At the same time, a camera module is also set up to confirm the information of the chip at the lower end of the chip head and to adjust the attitude by rotating the module, which ensures the assembly accuracy of the chip and improves the compatibility of chip placement position.

[0022] 3. This utility model is a fully automated device that can complete the predetermined work process without human intervention, and has high work efficiency and speed. Attached Figure Description

[0023] Figure 1 This is a structural diagram illustrating the application state of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model;

[0025] Figure 3 This is an exploded structural diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the camera module and ring light source of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the slice shifter of this utility model;

[0028] Figure 6 This is a schematic diagram of the dispensing head of this utility model;

[0029] Figure 7 This is a schematic diagram of the mounting plate of this utility model.

[0030] In the diagram: 11. Workbench; 111. Dispensing host; 112. Monitor; 12. X-axis motion module; 13. Y-axis motion module; 14. Z-axis motion module; 141. Mounting plate; 15. Stage; 16. Hot pressing module; 17. Flexible circuit board handling unit; 21. Transfer head; 22. Elastic nozzle; 23. Spring; 24. Rotation module; 25. Sliding seat; 251. Notch; 252. First adapter plate; 253. Second adapter plate; 3 1. Dispensing head; 32. Lead screw motor; 321. Lead screw; 33. Lead screw nut; 34. Sensor; 35. T-shaped bracket; 36. Motor mount; 41. Synchronous belt; 42. Fixed pulley; 43. Adjusting seat; 431. Locking groove; 44. Sliding wheel; 45. Threaded seat; 46. Slide rail; 47. Slider; 48. T-slot; 49. Clamping plate; 51. Ring light source; 52. Camera module; 53. Fixed bracket; 54. Adjusting plate; 55. Knob. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, terms such as "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] See Figures 1-7 A dispensing mechanism for flexible circuit boards and chips includes a worktable 11, a Y-axis motion module 13 disposed on the worktable 11, a platform 15 disposed on the moving end of the Y-axis motion module 13, an X-axis motion module 12 disposed on the worktable 11 and located above the platform 15, a Z-axis motion module 14 disposed on the moving end of the X-axis motion module 12, a mounting plate 141 disposed on the moving end of the X-axis motion module 12, a flexible circuit board transport part 17 disposed on the moving end of the Z-axis motion module 14, a hot pressing module 16 disposed on the worktable 11 and located above the platform 15, which is longitudinally slidably connected to the worktable 11, and a camera module 52 disposed on the worktable 11.

[0036] The platform 15 can be selectively moved to be directly below the hot pressing module 16; the movement directions of the X-axis motion module 12, the Y-axis motion module 13, and the Z-axis motion module 14 are perpendicular to each other; the X-axis motion module 12, the Y-axis motion module 13, and the Z-axis motion module 14 are linear motion mechanisms, such as lead screw modules or pneumatic linear modules.

[0037] A rotating module 24 is slidably connected longitudinally to the mounting plate 141. A chip shifting head 21 for moving chips is provided at the lower end of the moving end of the rotating module 24. The chip shifting head 21 can be selectively moved to directly above the camera module 52. A dispensing head 31 for dispensing glue is slidably connected longitudinally to the mounting plate 141. A dispensing host 111 communicating with the dispensing head 31 is provided on the worktable 11. A display 112 is provided on the worktable 11. The rotating module 24 is an electric turntable or a pneumatic rotating module.

[0038] The mounting plate 141 is provided with a synchronous belt 41 that is drivingly connected to the dispensing head 31 and the shifting head 21; the sliding direction of the shifting head 21 is opposite to the sliding direction of the dispensing head 31; a T-shaped bracket 35 perpendicular to the mounting plate 141 is provided at the upper middle part of the mounting plate 141; a fixed wheel 42 is rotatably connected to the T-shaped bracket 35; an adjusting seat 43 is longitudinally slidably connected to the mounting plate 141 directly below the fixed wheel 42, and a sliding wheel 44 is rotatably connected to the adjusting seat 43; the synchronous belt 41 is disposed between the fixed wheel 42 and the sliding wheel 44.

[0039] The adjusting seat 43 is provided with two locking grooves 431 located on the upper and lower sides of the sliding wheel 44 respectively, and the length direction of the locking grooves 431 is arranged longitudinally; the lower end of the mounting plate 141 is provided with a threaded seat 45; an adjusting screw is threadedly connected to the threaded seat 45; the end of the adjusting screw is rotatably connected to the adjusting seat 43.

[0040] A motor base 36 is provided between the T-shaped bracket 35 and the mounting plate 141; a lead screw motor 32 is provided on the upper end of the motor base 36; a lead screw 321 is provided on the output shaft of the lead screw motor 32.

[0041] The mounting plate 141 has two parallel slide rails 46 arranged longitudinally, with the two slide rails 46 respectively located on both sides of the synchronous belt 41. Each slide rail 46 has two sliders 47. Each of the two adjacent sliders 47 has a sliding seat 25, and one of the sliding seats 25 has a screw nut 33 that is threadedly connected to the screw 321. The rotating module 24 and the dispensing head 31 are respectively located on the two sliding seats 25. The mounting plate has a T-slot 48, and the T-slot 48 has three sensors 34 for monitoring the position of the dispensing head 31.

[0042] The sliding seat 25 has a notch 251 at one end facing the slide rail 46; a first adapter plate 252 slidably connected to the slide rail 46 is disposed within the notch 251; a second adapter plate 253 is disposed at the end of the sliding seat 25 away from the slide rail 46, and the rotating module 24 and the dispensing head 31 are respectively disposed on the corresponding second adapter plate 253. A clamping plate 49 is detachably connected to the side wall of the sliding seat 25; the synchronous belt 41 is disposed between the sliding seat 25 and the corresponding clamping plate 49.

[0043] A fixed bracket 53 is provided on the workbench 11; an adjustment plate 54 is horizontally slidably connected to the fixed bracket 53; the movement direction of the adjustment plate 54 is parallel to the movement direction of the Y-axis motion module 13; a knob 55 for driving the adjustment plate 54 to slide is threaded onto the fixed bracket 53; the camera module 52 is located at the lower part of the adjustment plate 54; a ring light source 51 is provided on the upper part of the adjustment plate 54 directly above the camera module 52.

[0044] The lower end of the transfer head 21 is longitudinally slidably connected to an elastic nozzle 22; the lower end of the elastic nozzle 22 is provided with a negative pressure adsorption hole; a spring 23 is provided between the elastic nozzle 22 and the transfer head 21 to make the elastic nozzle 22 slide downward.

[0045] Workflow: The lead screw motor 32 drives the lead screw 321 to rotate, thereby driving one of the sliding seats 25 to slide longitudinally. Under the transmission of the synchronous belt 41, the other sliding seat 25 slides longitudinally synchronously in the opposite direction. That is, the lead screw motor 32 drives the transfer head 21 and the glue dispensing head 31 to slide longitudinally. Under the drive of the X-axis motion module 12, the mounting plate 141 and the stage 15 can move in multiple directions.

[0046] The dispensing head 31 first moves downward (towards the flexible circuit board on the stage) to dispense adhesive, while the die transfer head 21 moves upward. Then, the dispensing head 31 moves upward and the die transfer head 21 moves downward to pick up the chip and place it at the dispensing position. Finally, the dispensing head 31 dispenses adhesive on the chip again to complete the assembly of one chip.

[0047] The flexible circuit board, chip, and flexible circuit board, which are assembled from bottom to top, complete the pressing process under the hot pressing of the hot pressing module 16, and output the final product.

[0048] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A dispensing mechanism for flexible circuit boards and chips, characterized in that: The device includes a worktable, a camera module mounted on the worktable, and a mounting plate horizontally slidably connected above the worktable. A rotating module is slidably connected longitudinally to the mounting plate, and a chip shifting head is provided at the lower end of the moving end of the rotating module for moving chips. The chip shifting head can be selectively moved to directly above the camera module. A dispensing head for dispensing adhesive is slidably connected longitudinally to the mounting plate. A synchronous belt is provided on the mounting plate for driving the dispensing head and the chip shifting head. The sliding direction of the chip shifting head is opposite to that of the dispensing head. A lead screw for driving the dispensing head to slide is rotatably connected to the mounting plate. A T-slot is provided on the mounting plate. Three sensors for monitoring the position of the dispensing head are provided on the T-slot.

2. The dispensing mechanism as described in claim 1, characterized in that: A fixed wheel is rotatably connected to the upper part of the mounting plate; an adjusting seat is slidably connected longitudinally to the mounting plate directly below the fixed wheel, and a sliding wheel is rotatably connected to the adjusting seat; a synchronous belt is disposed between the fixed wheel and the sliding wheel; the adjusting seat is provided with two locking grooves located on the upper and lower sides of the sliding wheel respectively, and the length direction of the locking grooves is longitudinal.

3. The dispensing mechanism as described in claim 2, characterized in that: A T-shaped bracket perpendicular to the mounting plate is provided at the upper center of the mounting plate; the fixed wheel is rotatably connected to the T-shaped bracket; a motor base is provided between the T-shaped bracket and the mounting plate; a lead screw motor is provided at the upper end of the motor base; the lead screw is provided on the output shaft of the lead screw motor.

4. The dispensing mechanism as described in claim 2, characterized in that: The lower end of the mounting plate is provided with a threaded seat; an adjusting screw is threadedly connected to the threaded seat; the end of the adjusting screw is rotatably connected to the adjusting seat.

5. The dispensing mechanism as described in any one of claims 1-4, characterized in that: A fixed bracket is provided on the workbench; an adjustment plate is slidably connected to the fixed bracket; a knob for driving the adjustment plate to slide is threaded onto the fixed bracket; the camera module is located at the lower part of the adjustment plate; a ring light source is provided on the upper part of the adjustment plate directly above the camera module.

6. The dispensing mechanism as described in any one of claims 1-4, characterized in that: The mounting plate is longitudinally provided with two parallel slide rails, which are respectively located on both sides of the synchronous belt; each slide rail is slidably connected with a sliding seat, and one of the sliding seats is provided with a lead screw nut that is threadedly connected to the lead screw; the rotating module and the dispensing head are respectively located on the two sliding seats.

7. The dispensing mechanism as described in claim 6, characterized in that: The sliding seat has a notch at one end facing the slide rail; a first adapter plate is provided in the notch and is slidably connected to the slide rail; a second adapter plate is provided at the end of the sliding seat away from the slide rail, and the rotating module and the dispensing head are respectively provided on the corresponding second adapter plates.

8. The dispensing mechanism as described in claim 6, characterized in that: The sliding seat sidewall is detachably connected to a clamping plate; the timing belt is disposed between the sliding seat and the corresponding clamping plate.

9. The dispensing mechanism as described in any one of claims 1-4, characterized in that: The lower end of the film transfer head is longitudinally slidably connected to an elastic nozzle; the lower end of the elastic nozzle is provided with a negative pressure adsorption hole; a spring is provided between the elastic nozzle and the film transfer head to allow the elastic nozzle to slide downward.

10. The dispensing mechanism as described in any one of claims 1-4, characterized in that: A platform is provided on the workbench; an X-axis motion module is provided on the workbench above the platform; a Z-axis motion module is provided on the moving end of the X-axis motion module; and a mounting plate is provided on the moving end of the X-axis motion module.

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