A novel light bar circuit board design method and device

Abstract

A novel LED strip circuit board design method and apparatus, comprising the following steps: S1: pretreatment, S2: silkscreen printing, S3: testing, S4: forming, S5: point finding, S6: FQC. This invention employs a method of testing and point finding before forming the circuit board, which avoids testing misalignment problems, greatly improves work efficiency, reduces misjudgments and scrap, and ensures product quality.

Description

Technical Field

[0001] This invention belongs to the field of circuit board processing, and specifically relates to a novel design method and device for LED strip circuit boards. Background Technology

[0002] With the trend of electronic products becoming lighter, thinner, shorter, and smaller, PCBs continue to evolve towards higher precision, higher integration, and thinner designs. The production quality and testing technology of printed circuit boards are inextricably linked.

[0003] CNC milling of finished PCBs is a key process in PCB manufacturing. PCB milling refers to the process of using a high-speed milling cutter to mill edges, grooves, and pin holes according to the coordinate program designed in the engineering design. Finished PCB testing mainly involves providing engineering data, and the fixture supplier will provide corresponding test and repair data. Finished boards are screened to identify those with open or short circuit defects, preventing defective PCBs from reaching the customer.

[0004] The traditional production process for PCB light strip boards is to first router the boards and then test them. After the light strip PCB board is formed, the routing space between each PCS in the SET is relatively long and the number of PCS in the SET is large. During testing, the test fixture cannot be fixed for each SET, resulting in PCS misalignment and making testing difficult.

[0005] Meanwhile, during the milling process of the LED strip PCB, due to the short and small characteristics of the LED strip PCB, there are certain difficulties in positioning and fixing the LED strip PCB. This can easily lead to large processing errors due to inaccurate positioning, causing the LED strip PCB to lose its function. Summary of the Invention

[0006] The above-mentioned objective of this invention is achieved through the following technical solution: A novel LED strip circuit board design method, comprising the following steps:

[0007] S1: Pre-processing: The pre-processing of the PCB light strip board includes material cutting, first punching, mounting, and lamination processes to obtain a combined light strip board with resistance welding positions, LED welding positions, and connection positions on the top.

[0008] S2: Screen printing: The printing mechanism aligns with the screen to perform screen printing on the required product, thus obtaining the screen printing plate required for the light strip PCB board;

[0009] S3: Testing: Based on the initial engineering data, test the finished boards to screen out short-circuit defective products and remove them to prevent defective PCBs from leaking to the next process. Test the unformed printed circuit boards. Printed circuit boards that pass the test are marked with the first test mark on each shipment piece. At this time, defective printed circuit boards are marked with the second test mark on each shipment piece.

[0010] S4: Molding: Using a uniquely designed molding device, the entire LED strip PCB board is milled, grooved, and has pin holes. Finally, a partial cutting process is performed to obtain an LED strip PCB board of the appropriate size for subsequent processing.

[0011] S5: Point finding: Check the LED strip circuit boards obtained in the previous process. If the point finding is defective, the printed circuit boards are scrapped directly and the corresponding scrap code is recorded. Printed circuit boards that pass the point finding test can proceed to the next process.

[0012] S6: FQC: Final quality control inspection of the product before shipment. Once the inspection is passed, the product is shipped.

[0013] A novel LED strip circuit board design device includes a forming device, wherein: the forming device includes a base, a CNC slotting milling machine is arranged on the right side of the base, a CNC forming milling machine is arranged on the left side of the base, a fixed limiting device is arranged directly below the CNC forming milling machine, a dividing device is also arranged between the CNC forming milling machine and the CNC slotting milling machine, and a track is arranged on the base, and the product is laid flat on the track and moves.

[0014] Preferably, the fixed limiting device includes a drive motor, which is fixed to the base. The drive motor is connected to a fixed limiting cylinder, which is rotatably fixed to the support base. Width limiting plates are provided on the front and rear sides of the fixed limiting cylinder. The fixed limiting cylinder includes a rotating inner core and a working outer core. The rotating inner core is connected to the drive motor for driving. The working outer core has a polygonal structure, and the polygonal edges of the working outer core are provided with locking strips in the shape of "Ω".

[0015] Preferably, the dividing device includes a support block, a driving block is provided on the support block, and a blade is provided inside the driving block, the blade can move back and forth through the driving block.

[0016] Preferably, the CNC slotting milling can perform slotting on the entire PCB light strip board using different tool shapes, with the slotting shape matching the card strip. The polygonal structure and number of polygons of the working outer core can be adaptively adjusted according to the shape and length of the PCB light strip board.

[0017] In summary, the present invention has at least one of the following beneficial technical effects: The present invention adopts a method of testing and finding points before forming the milling plate, which can avoid the problem of test misalignment, greatly improve work efficiency, reduce misjudgment and scrap, and ensure product quality.

[0018] This invention, through the configuration of the forming device, enables partial segmentation and milling processes such as edge milling, groove milling, and PIN hole milling to be performed on the same equipment. At the same time, by utilizing the shape characteristics of the clip, the product is self-locked and fixed by the fixed limiting cylinder. While the product is self-locking, the grooving process in the previous process can also be detected to ensure that the product can be fixed and correctly positioned during forming and milling. After forming, the grooved edge is used for further segmentation to obtain the PCB light strip board of the required size for the next process. Attached Figure Description

[0019] Figure 1 The molding device of the present invention is as follows Figure 1 ;

[0020] Figure 2 This is a schematic cross-sectional view of the molding device of the present invention;

[0021] Figure 3 The molding device of the present invention is as follows Figure 2 ;

[0022] Figure 4 This is the invention Figure 2 An enlarged diagram of the letter "E";

[0023] Figure 5 This is the invention Figure 2 An enlarged diagram of the letter "F";

[0024] Figure 6 This is the invention Figure 2 An enlarged diagram of the letter "G".

[0025] Reference numerals in the attached drawings: 1. Base; 2. CNC slotting milling; 3. CNC forming milling; 4. Fixed limiting device; 401. Drive motor; 402. Fixed limiting cylinder; 403. Support seat; 404. Width limiting plate; 405. Rotating inner core; 406. Working outer core; 407. Clamping strip; 5. Dividing device; 501. Support block; 502. Drive block; 6. Track. Detailed Implementation

[0026] The above-mentioned objective of this invention is achieved through the following technical solution: A novel LED strip circuit board design method, comprising the following steps:

[0027] S1: Pre-processing: The pre-processing of the PCB light strip board includes material cutting, first punching, mounting, and lamination processes to obtain a combined light strip board with resistance welding positions, LED welding positions, and connection positions on the top.

[0028] S2: Screen printing: The printing mechanism aligns with the screen to perform screen printing on the required product, thus obtaining the screen printing plate required for the light strip PCB board;

[0029] S3: Testing: Based on the initial engineering data, test the finished boards to screen out short-circuit defective products and remove them to prevent defective PCBs from leaking to the next process. Test the unformed printed circuit boards. Printed circuit boards that pass the test are marked with the first test mark on each shipment piece. At this time, defective printed circuit boards are marked with the second test mark on each shipment piece.

[0030] S4: Molding: Using a uniquely designed molding device, the entire LED strip PCB board is milled, grooved, and has pin holes. Finally, a partial cutting process is performed to obtain an LED strip PCB board of the appropriate size for subsequent processing.

[0031] S5: Point finding: Check the LED strip circuit boards obtained in the previous process. If the point finding is defective, the printed circuit boards are scrapped directly and the corresponding scrap code is recorded. Printed circuit boards that pass the point finding test can proceed to the next process.

[0032] S6: FQC: Final quality control inspection of the product before shipment. Once the inspection is passed, the product is shipped.

[0033] A novel LED strip circuit board design device includes a forming device, wherein: the forming device includes a base 1, a CNC slotting milling machine 2 is arranged on the right side of the base 1, a CNC forming milling machine 3 is arranged on the left side of the base 1, a fixing and limiting device 4 is arranged directly below the CNC forming milling machine 3, a dividing device 5 is also arranged between the CNC forming milling machine 3 and the CNC slotting milling machine 2, and a track 6 is arranged on the base 1, and the product is laid flat on the track 6 and moves.

[0034] Preferably, the fixed limiting device 4 includes a drive motor 401, which is fixed to the base 1. The drive motor 401 is connected to a fixed limiting cylinder 402, which is rotatably fixed to the support base 403. Width limiting plates 404 are provided on the front and rear sides of the fixed limiting cylinder 402. The fixed limiting cylinder 402 includes a rotating inner core 405 and a working outer core 406. The rotating inner core 405 is connected to the drive motor 401 for driving. The working outer core 406 has a polygonal structure, and a retaining strip 407 is provided on the edge of the polygonal structure of the working outer core 406. The retaining strip 407 is in the shape of "Ω".

[0035] Preferably, the dividing device 5 includes a support block 501, a driving block 502 is provided on the support block 501, and a blade is provided inside the driving block 502. The blade can move back and forth through the driving block 502.

[0036] Preferably, the CNC slotting milling machine 2 can perform slotting on the entire PCB light strip board using different tool shapes. The slotting shape matches the card strip 407, and the polygonal structure and number of polygons of the working outer core 406 can be adaptively adjusted according to the shape and length of the PCB light strip board.

[0037] When the forming device starts working, the elongated product first passes through the CNC slotting milling machine 2 via the track 6. The CNC slotting milling machine 2 uses a milling cutter to slot the product at a fixed distance, and the slot shape is a "U" shape, narrower at the top and wider at the bottom. Then, the track 6 moves the product towards the CNC forming milling machine 3. When the retaining strip 407 matches the slot of the product, the retaining strip 407 moves the product. At this time, the retaining strip 407 brings the product onto the fixed limiting cylinder 402. The width limiting plate 404 on the fixed limiting cylinder 402 and the retaining strip 407 limit it on all four sides. Only when all four sides are successfully limited will the product not fall off the fixed limiting cylinder 402. To a certain extent, defective products are also screened out. When the product matches the locking strip 407 and moves around the fixed guide cylinder 402, the deformation of the product will lock and limit the product with the locking strip 407, so that the product will not fall off the fixed guide cylinder 402. It also has a multi-dimensional limiting effect on the product. When the product rotates to the top, the CNC forming milling 3 mills the product. After that, the fixed limiting cylinder 402 continues to rotate. After the position of the product changes, the product is separated from the locking strip 407 by deformation at the slot. Then, the product is divided by the dividing device 5, which uses a blade to divide the product and slides out from the discharge port.

[0038] This invention, through the design of the locking strips, can effectively meet different product requirements at different times, while eliminating the need for complex limiting devices. By adaptively controlling the two locking strips 407, the positioning problem during milling is solved. Furthermore, the product can be easily removed by rotating the fixed limiting cylinder 402, without causing errors or difficulties in retrieving the product.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features.

Claims

1. A novel LED strip circuit board design device, characterized in that: The device includes a forming device, which includes a base (1). A CNC grooving milling machine (2) is provided on the right side of the base (1), and a CNC forming milling machine (3) is provided on the left side of the base (1). A fixed limiting device (4) is provided directly below the CNC forming milling machine (3). A dividing device (5) is also provided between the CNC forming milling machine (3) and the CNC grooving milling machine (2). A track (6) is provided on the base (1), and the product moves on the track (6). The fixed limiting device (4) includes a drive motor (401), which is fixed on the base (1). The drive motor (401) is connected to a fixed limiting cylinder (402), which is rotatably fixed on a support base (403). Width limiting plates (404) are provided on the front and rear sides of the fixed limiting cylinder (402). The fixed limiting cylinder (402) includes a rotating inner core (405) and a working outer core (406). The rotating inner core (405) is connected to the drive motor (401) for driving. The working outer core (406) has a polygonal structure. The polygonal structure edge of the working outer core (406) is provided with a retaining strip (407), which is "Ω" shaped.

2. The novel LED strip circuit board design device according to claim 1, characterized in that: The dividing device (5) includes a support block (501), a driving block (502) is provided on the support block (501), and a blade is provided inside the driving block (502). The blade can move back and forth through the driving block (502).

3. The novel LED strip circuit board design device according to claim 1, characterized in that: The CNC slotting milling (2) can perform slotting on the entire PCB light strip board through different tool shapes. The slotting shape matches the card strip (407). The polygonal structure and number of polygons of the working outer core (406) can be adaptively adjusted according to the shape and length of the PCB light strip board.

4. A novel LED strip circuit board design method based on the novel LED strip circuit board design device according to any one of claims 1 to 2, characterized in that: Based on the specific steps included: S1: Pre-processing: The pre-processing of the PCB light strip board includes material cutting, first punching, mounting, and lamination processes to obtain a combined light strip board with resistance welding positions, LED welding positions, and connection positions on the top. S2: Screen printing: The printing mechanism aligns with the screen to perform screen printing on the required product, thus obtaining the screen printing plate required for the light strip PCB board; S3: Testing: Based on the initial engineering data, test the finished boards to screen out short-circuit defective products and remove them to prevent defective PCBs from leaking to the next process. Test the unformed printed circuit boards. Printed circuit boards that pass the test are marked with the first test mark on each shipment piece. At this time, defective printed circuit boards are marked with the second test mark on each shipment piece. S4: Forming: The apparatus according to any one of claims 1 to 3 performs edge milling, groove milling and PIN hole cleaning on the entire LED strip PCB board, and finally performs a partial cutting process to obtain an LED strip PCB board of appropriate size for subsequent processing processes; S5: Point finding: Point finding and confirmation is performed on the LED strip circuit board obtained in the previous process. The printed circuit board of the defective product of point finding and confirmation is directly scrapped and the corresponding scrap code is recorded. The printed circuit board of the defective product that passes the point finding and confirmation test can proceed to the next process. S6: FQC: Final quality control inspection of the product before shipment. Once the inspection is passed, the product is shipped.

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