A precision control device for PCB board of matrix LED headlamp

Abstract

The utility model relates to the technical field of PCB precision control, disclose a kind of matrix LED headlamp with PCB precision control device, including PCB body and the placing plate of being set in the bottom of PCB body, the corner of the top of placing plate is clamped and is provided with the positioning assembly that realizes reciprocating clamping by air pressure adjustment, the corner of the top of placing plate and positioning assembly is provided with the compression assembly that is limited by spring contraction, the positioning assembly includes the air reservoir of being fixedly installed in the corner of the top of placing plate and the air exchange pump of being fixedly installed in the top of air reservoir, the utility model is by setting air reservoir and air exchange pump in the side of the top of placing plate, it is convenient to change the air pressure in the air reservoir, then cooperate the air pressure in the sealing sleeve plate inside by the air inlet pipe of air pipe connection outside air reservoir, then the telescopic length of telescopic plate is synchronously regulated, to change the rotation angle of rotating plate, and utilize rotating plate extrusion PCB body, then cooperate clamping plate to realize clamping operation.

Description

Technical Field

[0001] This utility model relates to the field of PCB board precision control technology, specifically to a PCB board precision control device for matrix LED headlights. Background Technology

[0002] Matrix LED headlights are gradually shifting from traditional lighting to more intelligent systems, enabling various image functions. This requires that the PCBs used in matrix LED headlights not only have important physical properties, but also meet crucial precision requirements. The tolerance of the LED positions and positioning holes must be controlled within ±20 micrometers. The existing PCB drilling process typically involves material preparation, inner layers, lamination, drilling, electroplating, circuitry, etching, solder mask, text, electroless gold plating, molding, testing, and FQC. This method involves single-position drilling, resulting in large drilling tolerances and low drilling consistency, which cannot meet the precision requirements of PCBs.

[0003] For example, the Chinese invention patent (application number: CN201410620861.X) discloses a "method for controlling the positioning accuracy of PCB board drilling." Its specification states that the industry standard for PCB mechanical drilling includes blind holes, through holes, VIA-1n_pads, back drill holes, etc., and a single product may involve one or more of these. Boards with multiple drilling types need to be manufactured separately. Because the board expands and contracts during manufacturing, and the positioning method for each drilling may differ, ensuring that each hole is drilled in the required accurate position is difficult. Furthermore, there is an error in the position of each drilling operation, and this error cannot be detected in time during production, leading to off-center holes after subsequent etching processes, which can severely damage the product and render it unusable. Therefore, those skilled in the art provide a precision control device for PCB boards used in matrix LED headlights to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a precision control device for PCB boards used in matrix LED headlights, which solves the problem of large drilling precision tolerances in existing PCB boards.

[0005] This utility model provides the following technical solution: a PCB board precision control device for matrix LED headlights, including a PCB board body and a placement plate disposed at the bottom of the PCB board body. A positioning component that achieves reciprocating clamping by adjusting air pressure is disposed at one corner of the top of the placement plate in a clamping shape. A compression component that achieves limiting by spring contraction is disposed at one corner of the top of the placement plate opposite to the positioning component. The positioning component includes an air chamber fixedly installed at one corner of the top of the placement plate and an air exchange pump fixedly installed on the top of the air chamber.

[0006] As a preferred embodiment of the above technical solution, an installation plate is installed at a right angle on the outer side of the air chamber, a sealing sleeve is provided at the bottom of the installation plate, and an outwardly extending telescopic plate is sealed and fitted inside the sealing sleeve.

[0007] As a preferred embodiment of the above technical solution, the sealing sleeve is provided with an air inlet pipe that communicates with the inner cavity of the air chamber on the side near the air chamber, the telescopic plate has a circular groove through the end away from the air chamber, a rotating plate is sleeved on the outer side of the telescopic plate through the circular groove, a second connecting shaft is sleeved on the side of the rotating plate away from the telescopic plate, and the bottom of the second connecting shaft is fixedly connected to the top of the placement plate.

[0008] As a preferred embodiment of the above technical solution, the top of the placement plate is provided with an inwardly extending square groove, the middle of the square groove is provided with an air exchange box, and the bottom of the air exchange box is provided with a first air supply pipe that communicates with the bottom of the air chamber. Air nozzles are arranged in an array on the outer side of the air exchange box, and the side wall of the air nozzle is provided with an air guide pipe that communicates with the side wall of the air exchange box.

[0009] As a preferred embodiment of the above technical solution, the compression assembly includes an arc plate fixedly installed at one corner of the top of the placement plate, a compression spring fixedly installed on the inner side of the arc plate, and a clamping plate fixedly installed at the other end of the compression spring. The clamping plate is hollow, and a rubber sheet is provided on the inner side of the clamping plate. A second gas supply pipe communicating with the bottom of the gas chamber is provided at the bottom of the clamping plate.

[0010] As a preferred embodiment of the above technical solution, a sliding shaft is fixedly installed at the bottom of the clamping plate, and an inwardly extending sliding groove and a limiting groove are spaced apart at the top of the placement plate. The sliding shaft passes through the sliding groove and extends to the inner side of the placement plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model sets an air chamber and an air exchange pump on one side of the top of the placement plate, which makes it easy to change the air pressure inside the air chamber, and then change the air pressure inside the sealing sleeve plate by cooperating with the air inlet pipe connected to the outside of the air chamber, thereby synchronously adjusting the extension length of the telescopic plate, thereby changing the rotation angle of the rotating plate, and using the rotating plate to squeeze the PCB board body, and then cooperating with the clamping plate to achieve the clamping operation.

[0013] 2. This utility model adds a secondary drilling process to the existing drilling process by pre-reserving positioning holes inside the PCB board body and combining it with CCD drilling technology. It also adds 4 MAKE points to the existing process. The solder mask exposure uses a DI exposure machine to capture the 4 MAKE points for positioning, ensuring the consistency of the accuracy of the circuit pattern and the solder mask pattern. At the same time, when drilling the positioning holes for the second time, CCD is used to perform the second drilling and capture the solder mask definition PAD for positioning, ensuring the consistency of the accuracy of the second drilling and the solder mask pattern. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a PCB board precision control device for matrix LED headlights.

[0015] Figure 2 An exploded view of the structure of a PCB board precision control device for matrix LED headlights;

[0016] Figure 3 A bottom view of the internal structure of a PCB board for a matrix LED headlight precision control device placement board.

[0017] Figure 4 A cross-sectional view of the connection structure of the sealing sleeve of a PCB board precision control device for matrix LED headlights.

[0018] Figure 5 An exploded view of the structure of the upper surface of a PCB board for a matrix LED headlight, where a precision control device is placed;

[0019] Figure 6 This is a schematic diagram of the connection structure of the clamping plate of a PCB board precision control device for matrix LED headlights.

[0020] Legend:

[0021] 1. Placement plate; 2. Air chamber; 3. Air exchange pump; 4. Sealing sleeve; 5. Mounting plate; 6. First connecting shaft; 7. Air inlet pipe; 8. Telescopic plate; 9. Circular groove; 10. Rotating plate; 11. Second connecting shaft; 12. Square groove; 13. Air exchange box; 14. Air nozzle; 15. Air guide pipe; 16. First air supply pipe; 17. Second air supply pipe; 18. Clamping plate; 19. Sliding shaft; 20. Rubber sheet; 21. Compression spring; 22. Arc plate; 23. Sliding groove; 24. Limiting groove; 25. PCB board body. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figures 1-6 As shown, this utility model provides a technical solution: a PCB board precision control device for matrix LED headlights, including a PCB board body 25 and a placement plate 1 disposed at the bottom of the PCB board body 25. A positioning component that achieves reciprocating clamping by adjusting air pressure is disposed at one corner of the top of the placement plate 1 in a clamping shape. A compression component that achieves limiting by spring contraction is disposed at one corner of the top of the placement plate 1 opposite to the positioning component. The positioning component includes an air chamber 2 fixedly installed at one corner of the top of the placement plate 1 and an air exchange pump 3 fixedly installed on the top of the air chamber 2. The air exchange pump 3 is pipe-connected to the air chamber 2.

[0024] As one implementation method in this embodiment, please refer to Figures 1-4 As shown, an installation plate 5 is installed at a right angle on the outer side of the air chamber 2. A sealing sleeve 4 is provided at the bottom of the installation plate 5, and an outwardly extending telescopic plate 8 is sealed and fitted inside the sealing sleeve 4. A first connecting shaft 6 is fixedly installed at the top of the sealing sleeve 4 near the air chamber 2, and the installation plate 5 is sleeved with the first connecting shaft 6.

[0025] The sealing sleeve 4 is provided with an air inlet pipe 7 that communicates with the inner cavity of the air chamber 2 on the side near the air chamber 2. The telescopic plate 8 has a circular groove 9 through the end away from the air chamber 2. A rotating plate 10 is sleeved on the outside of the telescopic plate 8 through the circular groove 9. A second connecting shaft 11 is sleeved on the side of the rotating plate 10 away from the telescopic plate 8, and the bottom of the second connecting shaft 11 is fixedly connected to the top of the placement plate 1. The sealing sleeve 4 is connected to the air chamber 2 through the air inlet pipe 7, and the outside of the air inlet pipe 7 has a valve body. Therefore, the air pressure inside the sealing sleeve 4 can be changed by the air exchange pump 3, thereby realizing the reciprocating movement of the telescopic plate 8.

[0026] The top of the placement plate 1 is provided with an inwardly extending square groove 12. The middle of the square groove 12 is provided with an air exchange box 13. The bottom of the air exchange box 13 is provided with a first air supply pipe 16 that communicates with the bottom of the air chamber 2. Air nozzles 14 are arranged in an array on the outer side of the air exchange box 13. The side wall of the air nozzle 14 is provided with an air guide pipe 15 that communicates with the side wall of the air exchange box 13. The air chamber 2 is connected to the air exchange box 13, so that the air exchange pump 3 can form a negative pressure at the top of the air nozzle 14, and then use the negative pressure to achieve the adsorption operation of the PCB board body 25.

[0027] As one implementation method in this embodiment, please refer to Figure 5 and Figure 6 As shown, the compression assembly includes an arc plate 22 fixedly installed at one corner of the top of the placement plate 1. A compression spring 21 is fixedly installed on the inner side of the arc plate 22, and a clamping plate 18 is fixedly installed on the other end of the compression spring 21. The clamping plate 18 is hollow, and a rubber sheet 20 is provided on the inner side of the clamping plate 18. A second air supply pipe 17 communicating with the bottom of the air chamber 2 is provided at the bottom of the clamping plate 18. The air chamber 2 can easily supply gas into the interior of the clamping plate 18 through the second air supply pipe 17, thereby causing the rubber sheet 20 to expand and bulge, thus facilitating the protection of the PCB board body 25.

[0028] A sliding shaft 19 is fixedly installed at the bottom of the clamping plate 18. The top of the placement plate 1 is provided with an inwardly extending sliding groove 23 and a limiting groove 24 spaced apart. The sliding shaft 19 passes through the sliding groove 23 and extends to the inner side of the placement plate 1. The placement plate 1 is sleeved with the second air supply pipe 17 through the limiting groove 24, and the second air supply pipe 17 is a telescopic pipe.

[0029] Working principle: When using, first take out the PCB board body 25 that needs to be drilled, and observe the four MAKE points and positioning holes reserved on its top. Then place the PCB board body 25 on the top of the placement board 1 so that the back of the PCB board body 25 contacts the air nozzle 14.

[0030] Next, the air exchange pump 3 is started to deliver gas. The air exchange pump 3 continuously delivers gas into the air chamber 2 and, through the air inlet pipe 7 connected to the outside of the air chamber 2, delivers gas into the inner cavity of the sealing sleeve 4, causing the air pressure inside the cavity to continuously increase. This, in turn, pushes the telescopic plate 8 to extend outward. The extended telescopic plate 8 continuously pushes the rotating plate 10 to rotate around the second connecting shaft 11, causing one end of the rotating plate 10 to continuously approach the edge of the PCB board body 25 until it contacts the edge, thus pushing the PCB board body 25 to move. As the two sets of rotating plates 10 continuously push, the PCB board body 25 continuously moves until one corner of the PCB board body 25 contacts the rubber sheet 20, and continues to move towards the PCB board body 25. As the PCB board body 25 moves, it can deliver gas to the inner cavity of the clamping plate 18 through the air chamber 2 and the second air supply pipe 17 connected to its bottom, changing the air pressure in the inner cavity. Under the action of air pressure, the rubber sheet 20 is pushed outward, thereby avoiding damage to the side of the PCB board body 25 when it comes into contact with the PCB board body 25. By squeezing the rubber sheet 20, the clamping plate 18 and the compression spring 21 by the PCB board body 25, the clamping plate 18 slides along the slide groove 23 through the sliding shaft 19 until the CCD module of the drilling equipment is positioned at the positioning hole reserved at the top of the PCB board body 25. At this time, the gas delivery to the inside of the sealing sleeve 4 is stopped, and the position of the PCB board body 25 remains unchanged.

[0031] Next, the air exchange pump 3 is started and the air is pumped out. Then, the air is continuously pumped out through the air chamber 2, the first air supply pipe 16 connected to its bottom, the air exchange box 13 connected to the other end of the first air supply pipe 16, the air guide pipe 15 and the air nozzle 14, so that a negative pressure is formed at the top of the air nozzle 14, and the PCB board body 25 is positioned by negative pressure adsorption.

[0032] Next, drilling can be performed. The drilling process at this time is as follows: material cutting, inner layer, lamination, first drilling, electroplating, circuit, etching, solder mask, text, second drilling, electroless gold treatment, forming, testing, and FQC. By adding the second drilling process and utilizing the positioning drilling of the PCB board body 25 and the CCD drilling technology built into the drilling equipment, the drilling accuracy is greatly improved, and the consistency of accuracy can also be controlled.

[0033] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A precision control device for a matrix LED headlight PCB board, comprising a PCB board body (25) and a placement plate (1) disposed at the bottom of the PCB board body (25), characterized in that: The top corner of the placement plate (1) is provided with a positioning component that is clamped by air pressure adjustment to achieve reciprocating clamping. The top corner of the placement plate (1) opposite to the positioning component is provided with a compression component that is limited by spring contraction. The positioning component includes an air chamber (2) fixedly installed at the top corner of the placement plate (1) and an air exchange pump (3) fixedly installed on the top of the air chamber (2).

2. The PCB board precision control device for matrix LED headlights according to claim 1, characterized in that: An installation plate (5) is installed at a right angle on the outer side of the air chamber (2). A sealing sleeve (4) is provided at the bottom of the installation plate (5), and an outwardly extending telescopic plate (8) is sealed and fitted inside the sealing sleeve (4).

3. The PCB board precision control device for matrix LED headlights according to claim 2, characterized in that: The sealing sleeve (4) is provided with an air inlet pipe (7) that communicates with the inner cavity of the air chamber (2) on the side near the air chamber (2). The telescopic plate (8) has a circular groove (9) passing through the end away from the air chamber (2). A rotating plate (10) is sleeved on the outside of the telescopic plate (8) through the circular groove (9). A second connecting shaft (11) is sleeved on the side of the rotating plate (10) away from the telescopic plate (8), and the bottom of the second connecting shaft (11) is fixedly connected to the top of the placement plate (1).

4. The PCB board precision control device for matrix LED headlights according to claim 3, characterized in that: The top of the placement plate (1) is provided with an inwardly extending square groove (12), the middle of the square groove (12) is provided with an air exchange box (13), and the bottom of the air exchange box (13) is provided with a first air supply pipe (16) that communicates with the bottom of the air chamber (2). The outer side of the air exchange box (13) is provided with an array of air nozzles (14), and the side wall of the air nozzles (14) is provided with an air guide pipe (15) that communicates with the side wall of the air exchange box (13).

5. The PCB board precision control device for matrix LED headlights according to claim 4, characterized in that: The compression assembly includes an arc plate (22) fixedly installed at one corner of the top of the placement plate (1). A compression spring (21) is fixedly installed on the inner side of the arc plate (22), and a clamping plate (18) is fixedly installed at the other end of the compression spring (21). The clamping plate (18) is hollow, and a rubber sheet (20) is provided on the inner side of the clamping plate (18). A second gas supply pipe (17) communicating with the bottom of the gas chamber (2) is provided at the bottom of the clamping plate (18).

6. The PCB board precision control device for matrix LED headlights according to claim 5, characterized in that: The bottom of the clamping plate (18) is fixedly installed with a sliding shaft (19), and the top of the placement plate (1) is provided with an inwardly extending sliding groove (23) and a limiting groove (24) spaced apart. The sliding shaft (19) passes through the sliding groove (23) and extends to the inner side of the placement plate (1).

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