PCB correction mechanism

Abstract

The utility model discloses a PCB (printed circuit board) correcting mechanism which can be used for simultaneously solving the problem that a PCB tilts upwards or bends downwards, and the corrected PCB can meet the production standard of a display screen module. The PCB correction mechanism comprises a guide device, a top plate and a driving device; the guide device comprises two groups of rails and pressing strips which are symmetrically arranged left and right; the pressing strips are installed above the track and are parallel to the track, and flanges are formed on the opposite faces of the left pressing strip and the right pressing strip in a protruding mode. A groove-shaped structure in sliding fit with the edge of the PCB to be corrected is reserved between the pressing strip and the track; the top plate is movably matched between the left track and the right track, and the edge of the top plate is overlapped with the flange in the vertical direction; the driving device is arranged below the top plate and used for driving the top plate to do lifting motion.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB processing, in particular to a PCB correction mechanism. Background Art

[0002] In the production process of LED display modules, due to the different qualities of PCB boards and the decreasing thickness of PCB boards, after reflow soldering, different PCB boards may be bent to varying degrees, and may have problems such as upward warping or downward bending. In the prior art, it is difficult to solve the bending problem of PCB boards after reflow soldering on the assembly line, or it can only be solved in a single direction, resulting in the problem that the produced PCB boards do not meet the production quality requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a PCB correction mechanism to solve the problems existing in the prior art, which can be used to solve the problems of upward warping or downward bending of PCB boards at the same time, and the corrected PCB boards can meet the production standards of display modules.

[0004] To achieve the above purpose, the solution of the utility model is:

[0005] A PCB correction mechanism includes a guiding device, a top plate and a driving device; the guiding device includes two groups of symmetrically arranged left and right tracks and pressing strips; the pressing strips are installed above the tracks and are parallel to the tracks, and flanges are formed protruding on the opposite surfaces of the left and right pressing strips; a groove-like structure for the edge of the PCB board to be corrected to slide and cooperate is left between the pressing strips and the tracks; the top plate is movably fitted between the left and right tracks, and the edge of the top plate overlaps with the flange in the up and down directions; the driving device is arranged below the top plate and is used to drive the top plate to move up and down.

[0006] The length of the pressing strip is the same as that of the top plate and the front and rear ends are aligned.

[0007] The side surface of the flange of the pressing strip is an arc-shaped structure.

[0008] The pressing strip and the top plate are both made of aluminum.

[0009] Preferably, a plurality of air holes are arranged on the top plate.

[0010] The driving device includes a bottom plate relatively fixed to the track, and a cylinder installed on the bottom plate, and the output end of the cylinder is connected to the middle position of the top plate.

[0011] After adopting the above technical solution, the utility model has the following technical effects:

[0012] The PCB correction mechanism of the utility model can be applied to the position of the docking station after the reflow furnace. When the track transports the PCB board to the position of the top plate, the driving device drives the top plate to lift up and push the PCB board upward until it contacts the pressure strip. Then the driving device continues to push up the top plate, so that the pressure strip and the top plate squeeze and correct the PCB board, and can achieve correction in the up and down directions at the same time, which can solve the problem of the PCB board warping up or bending down after being heated, so that the PCB board can meet the production standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of a specific embodiment of the utility model (one side of the track is hidden);

[0014] Description of Figure Numbers:

[0015] 1-guide device; 11-track; 12-pressing strip; 121-flange;

[0016] 2-top plate; 21-air hole;

[0017] 3-driving device; 31-base plate; 32-cylinder. DETAILED DESCRIPTION

[0018] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0019] refer to Figure 1 As shown, the utility model discloses a PCB correction mechanism, including a guide device 1, a top plate 2 and a driving device 3;

[0020] The guide device 1 includes two sets of rails 11 and pressure strips 12 symmetrically arranged on the left and right sides; the pressure strips 12 are installed above the rails 11 and parallel to the rails 11, and flanges 121 are protruded on the opposite surfaces of the left and right pressure strips 12;

[0021] A groove structure is reserved between the pressure strip 12 and the track 11 for the edge of the PCB to be corrected to slide with;

[0022] The top plate 2 is movably fitted between the left and right rails 11, and the edge of the top plate 2 overlaps with the flange 121 in the up and down direction;

[0023] The driving device 3 is arranged below the top plate 2 and is used for driving the top plate 2 to perform lifting motion.

[0024] Through the above scheme, the PCB correction mechanism of the utility model can be applied to the position of the docking station after the reflow furnace. When the track 11 transports the PCB board to the position of the top plate 2, the driving device 3 drives the top plate 2 to lift up, and lifts the PCB board upward until it contacts the pressure bar 12. Then the driving device 3 continues to lift the top plate 2, so that the pressure bar 12 and the top plate 2 squeeze and correct the PCB board, and can achieve correction in the up and down directions at the same time, which can solve the problem of the PCB board warping up or bending down after being heated, so that the PCB board can meet the production standards.

[0025] Specific embodiments of the present utility model are shown below.

[0026] The length of the above-mentioned pressure strip 12 is the same as the length of the top plate 2 and the front and rear ends are aligned. In this embodiment, the length of the above-mentioned pressure strip 12 is 15±0.01mm longer than that of the conventional PCB board, ensuring that PCB boards of different sizes can be covered.

[0027] The side of the flange 121 of the pressure strip 12 is an arc-shaped structure, which can reduce the wear of the sharp corners on the PCB. In this embodiment, the two end points of the arc-shaped structure are the lowest points, the middle part is the highest point, and the difference between the highest point and the lowest point is 2.56±0.01mm.

[0028] The above-mentioned pressure strip 12 and top plate 2 are both made of aluminum, so that the pressure strip 12 and top plate 2 can quickly conduct and dissipate heat when in contact with the PCB board, and ensure the heat dissipation capacity of the pressure strip 12 and top plate 2 themselves, ensuring the stability of continuous operation.

[0029] The top plate 2 is provided with a plurality of air holes 21. The advantages of providing the air holes 21 are: ① The temperature of the PCB board coming out of the reflow oven is relatively high. While the top plate and the pressure strip are being corrected, the air holes 21 and the top plate 2 made of aluminum can help the PCB board to quickly dissipate heat and cool down, so that the PCB board can be quickly shaped, prevent secondary deformation, and ensure the yield rate of subsequent operations; ② The air holes 21 can improve the heat dissipation capacity of the top plate 2 itself, avoid overheating due to continuous work, and affect the subsequent correction effect.

[0030] The driving device 3 comprises a bottom plate 31 fixed relative to the track 11 , and a cylinder 32 mounted on the bottom plate 31 , wherein the output end of the cylinder 32 is connected to the middle position of the top plate 2 .

[0031] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A PCB correction mechanism, characterized in that: It includes a guiding device, a top plate and a driving device; The guiding device includes two groups of tracks and pressing strips symmetrically arranged left and right; the pressing strips are installed above the tracks and are parallel to the tracks, and flanges are formed protruding on the opposite surfaces of the left and right pressing strips; A groove-like structure for the edge of the PCB board to be corrected to slide and cooperate is left between the pressing strip and the track; The top plate is movably fitted between the left and right tracks, and the edge of the top plate overlaps with the flange in the up and down directions; The driving device is arranged below the top plate and is used to drive the top plate to move up and down.

2. The PCB correction mechanism according to claim 1, characterized in that: The length of the pressing strip is the same as that of the top plate and the front and rear ends are aligned.

3. The PCB correction mechanism according to claim 1, characterized in that: The side surface of the flange of the pressing strip is an arc-shaped structure.

4. The PCB correction mechanism according to claim 1, characterized in that: The pressing strip and the top plate are both made of aluminum.

5. The PCB correction mechanism according to claim 1 or 4, characterized in that: A number of air holes are provided on the top plate.

6. The PCB correction mechanism according to claim 1, characterized in that: The driving device includes a bottom plate relatively fixed to the track, and a cylinder installed on the bottom plate, and the output end of the cylinder is connected to the middle position of the top plate.

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