AOI (automatic optical inspection) equipment general carrier for PCBA (printed circuit board assembly) product detection

Abstract

The utility model discloses an AOI (automatic optical inspection) equipment universal carrier for PCBA (printed circuit board assembly) product detection, relates to the technical field of electronic manufacturing PCBA testing devices, and aims to solve the technical problem that connectors, crimping parts and board edges cannot be fixed due to the fact that the connectors, the crimping parts and the board edges are flush or extend out of the board edges during PCBA detection. Comprising at least three movable supports and a plurality of movable supporting ejector pins, each movable support can move in the X-axis direction, and at least one movable supporting ejector pin is arranged in the Y-axis direction of each movable support in a sliding mode. According to the AOI equipment general carrier for PCBA product detection provided by the embodiment of the utility model, when the PCBA is detected by the AOI equipment, the carrier can flexibly move supporting points of each part and support at the bottom of a PCBA mechanism hole, so that the problem that a connector, a crimping part and a board edge are flush or extend out of the board edge and cannot be fixed during PCBA detection in the prior art is solved, the PCBA can pass an AOI test, and the detection efficiency is improved. PCBA fixation can be carried out on products with process edges and products without process edges, and AOI equipment detection of PCBA can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic manufacturing PCBA test devices, in particular to an AOI equipment universal carrier for PCBA product detection. Background Art

[0002] In the electronic manufacturing process, after the PCBA is welded and before the connectors or structural parts are installed, the product has process edge support, and the equipment can be inspected by clamping the process edge. When the PCBA is de-paneled at the back end, some installed connectors, crimping parts, and structural parts will be flush with or extend out of the board edge. Due to the irregular shape of the PCBA or some surface mount components close to the board edge, they cannot be clamped and fixed during AOI inspection, resulting in the inability to use equipment for inspection. It can only be inspected and confirmed by manual visual inspection, which is labor-intensive and time-consuming, easily fatigues the eyes, has a high risk of errors and omissions, and the equipment cannot be fully utilized. Utility Model Content

[0003] The embodiment of the utility model provides a universal carrier of AOI equipment for PCBA product inspection, so as to at least solve the technical problem in the prior art that connectors and crimping parts cannot be fixed because they are flush with the board edge or extend out of the board edge during PCBA inspection.

[0004] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0005] A universal carrier of AOI equipment for PCBA product inspection is used to carry PCBA products. The PCBA products have at least three assembly holes, including at least three movable brackets and multiple movable supporting ejectors. Each movable bracket can be moved along the X-axis direction, and at least two of the at least three movable brackets are relatively arranged along the Y-axis direction; at least one movable supporting ejector is slidably arranged along the Y-axis direction of each movable bracket, and the movable supporting ejector includes an ejector that can be moved along the Z-axis direction; wherein the ejectors are matched one by one with the positions of the assembly holes of the PCBA products, and the ejectors are inserted into the assembly holes to support and fix the PCBA products.

[0006] The embodiment of the utility model provides a universal carrier for AOI equipment for PCBA product inspection. When the AOI equipment inspects the PCBA, the carrier can flexibly move the supporting points of various parts and provide support at the bottom of the PCBA mechanism hole, thereby solving the problem in the prior art that the connectors and crimping parts cannot be fixed when the PCBA is inspected because they are flush with the board edge or extend out of the board edge. Therefore, the PCBA can pass the AOI test, and the PCBA can be fixed for both products with and without process edges, thereby realizing AOI equipment inspection of the PCBA.

[0007] In a possible design, it also includes a main frame, two track rods, four track rod fixing columns and at least three bracket sliding fixing blocks. The main frame is in a U-shape, and the two track rods are symmetrically arranged along the Y-axis direction of the main frame and are parallel to the main frame; both ends of each track rod are connected to the main frame through the track rod fixing columns; at least two bracket sliding fixing blocks are slidably connected to one of the track rods, at least one bracket sliding fixing block is slidably connected to another track rod, and the bracket sliding fixing block is fixedly connected to one end of the movable bracket.

[0008] In a possible design, each track rod has a limiting portion at a middle position.

[0009] In a possible design, the cross section of the bracket sliding fixing block is I-shaped.

[0010] In a possible design, a track is provided on the inner wall of the track rod, and the bracket sliding fixing block slides along the track.

[0011] In a possible design, the movable bracket is provided with a slide groove along the length direction; the movable supporting ejector pin further includes a hexagonal nut; wherein the hexagonal nut is slidably connected to the slide groove.

[0012] In a possible design, the movable supporting ejector pin further comprises a threaded main rod, the threaded main rod is threadedly connected to the hexagonal nut, and the ejector pin is mounted on the head of the threaded main rod.

[0013] Beneficial effects:

[0014] The utility model adds a special ejector pin for positioning the PCBA and a movable bracket that can move freely to the bottom of the carrier, so that the PCBA positioning is not limited to relying on the original board edge clamping and pressing positioning, thereby achieving the advantages of convenient operation, strong flexibility, wide applicability, etc.

[0015] The universal carrier of AOI equipment for PCBA product inspection uses four movable support pins to support the bottom of the board using the structural holes on the product and the metallized holes of the uninserted plug-in parts. By adjusting the positions of the four movable support pins and the four movable brackets according to the product size and hole position, it can support and fix the different positions of products with process edges, without process edges and irregular products; and make the upper surface of the fixed product and the upper surface of the carrier in the same plane, so as to achieve the purpose of equipment inspection;

[0016] Before implementation, it was impossible to perform equipment inspection on products without process edges and irregular shapes. The spatial layout of such products is tight, and the components are close to the edge of the board and are not easy to clamp. AOI equipment inspection cannot be tested and can only be carried out by manual visual inspection. Usually, manual visual inspection is slow, and each product takes more than 30 minutes, and there is a risk of inspection omission. After using the universal carrier of AOI equipment for PCBA product inspection of this patent, you only need to adjust the carrier support point, fix the product on the carrier, and adjust the equipment test program positioning point to perform automatic equipment inspection. Usually, it takes 2-4 minutes to inspect the front and back sides of the equipment and make manual judgments. In terms of efficiency, the use of this carrier is 10 times more efficient than manual visual inspection, and human visual omissions are eliminated in terms of product inspection consistency, which not only improves the quality of PCBA product inspection, but also improves the efficiency of PCBA product inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall effect diagram of the universal carrier of the AOI equipment used for PCBA product inspection according to the embodiment of the utility model;

[0018] Figure 2 It is a three-dimensional stereogram of the main frame of the embodiment of the utility model;

[0019] Figure 3 This is a three-dimensional stereogram of the track rod of an embodiment of the utility model;

[0020] Figure 4 This is a three-dimensional perspective view of the track rod fixing column of the embodiment of the utility model;

[0021] Figure 5 This is a three-dimensional perspective view of the sliding fixing block of the bracket of the embodiment of the utility model;

[0022] Figure 6 This is a three-dimensional perspective view of the movable bracket of the embodiment of the utility model;

[0023] Figure 7 This is a cross-sectional view of a movable support ejector pin according to an embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of the use and installation of a universal carrier of an AOI device for testing circular PCBA products according to an embodiment of the utility model;

[0025] Fig. 9 This is a schematic diagram of the use and installation of a universal carrier of AOI equipment for detecting irregular square PCBA products in another embodiment of the utility model.

[0026] In the figure:

[0027] 1. Main frame; 2. Track rod, 201, limit part, 202, track; 3. Track rod fixing column; 4. Bracket sliding fixing block; 5. Movable bracket, 501, slide groove; 6. Movable support ejector pin, 601, hexagonal nut, 602, threaded main rod, 6021, head, 603, ejector pin; 7. PCBA product; 8. Assembly hole. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model embodiment provides a universal carrier of AOI equipment for PCBA product inspection, which carries PCBA product 7. PCBA product 7 has at least three assembly holes 8. Figure 1 , including at least three movable brackets 5 and multiple movable supporting ejectors 6, each movable bracket 5 can be moved along the X-axis direction, and at least two of the at least three movable brackets 5 are relatively arranged along the Y-axis direction; at least one movable supporting ejector 6 is slidably arranged along the Y-axis direction of each movable bracket 5, and the movable supporting ejector 6 includes an ejector 603 that can move along the Z-axis direction; wherein the ejector 603 is matched with the position of the assembly hole 8 of the PCBA product 7 one by one, and the ejector 603 is inserted into the assembly hole 8 to support and fix the PCBA product 7.

[0032] The embodiment of the utility model provides a universal carrier for AOI equipment for PCBA product inspection. When the AOI equipment inspects the PCBA, the carrier can flexibly move the supporting points of various parts and provide support at the bottom of the PCBA mechanism hole, thereby solving the problem in the prior art that the connectors and crimping parts cannot be fixed because they are flush with the board edge or extend out of the board edge during PCBA inspection. The movable bracket 5 and the movable supporting ejector pin 6 make it possible to follow the hole position of the PCBA product 7 and adjust the adaptive fixture, so that the PCBA can pass the AOI test. The PCBA can be fixed to products with and without process edges, thereby realizing AOI equipment inspection of the PCBA.

[0033] In order to realize that each movable bracket 5 can move along the X-axis direction, please continue to refer to Figure 1 and Figure 2 , also includes a main frame 1, two track rods 2, four track rod fixing columns 3 and at least three bracket sliding fixing blocks 4, the main frame 1 is in a U-shape, the two track rods 2 are symmetrically arranged along the Y-axis direction of the main frame 1, and are parallel to the main frame 1; both ends of each track rod 2 are connected to the main frame 1 through the track rod fixing columns 3; at least two bracket sliding fixing blocks 4 are slidably connected to one of the track rods 2, at least one bracket sliding fixing block 4 is slidably connected to another track rod 2, and the bracket sliding fixing block 4 is fixedly connected to one end of the movable bracket 5.

[0034] To define the position of the bracket sliding fixing block 4, see Figure 3 Each track rod 2 has a limiting portion 201 at the middle position, and the limiting portion 201 divides the track rod 2 into two parts.

[0035] To improve the stability of the bracket sliding fixing block 4 when sliding, see Figure 3 and Figure 4 The cross section of the bracket sliding fixed block 4 is I-shaped, the inner wall of the track rod 2 is provided with a track 202 , the bracket sliding fixed block 4 slides along the track 202 , and the vertical portion of the I-shaped sliding fixed block 4 slides along the inner wall of the track 202 .

[0036] The carrier is based on a main frame 1, with track rods 2 installed on both sides, and the track rods 2 are fixed by track fixing columns 3; the track rods 2 are limited in the middle, and movable brackets 5 are fixed on both sides of each track rod 2 by bracket sliding fixing blocks 4, and each movable bracket 5 can move back and forth on the track rod 2.

[0037] In order to realize the sliding of the movable support pin 6 along the length direction of the movable bracket 5, see Figure 6 and Figure 7 The movable bracket 5 is provided with a slide groove 501 along the length direction; the movable supporting ejector pin 6 also includes a hexagonal nut 601; wherein the hexagonal nut 601 is slidably connected with the slide groove 501.

[0038] In order to realize the movement of the ejector pin 603 of the movable supporting ejector pin 6 along the Z-axis direction, see Figure 7 The movable support ejector pin 6 also includes a threaded main rod 602, which is threadedly connected to the hexagonal nut 601, and the ejector pin 603 is installed on the head 6021 of the threaded main rod 602. The movable support ejector pin 6 is installed on the movable bracket 5. The movable support ejector pin 6 is composed of a threaded main rod 602 and a hexagonal nut 601. The hexagonal nut 601 is installed on the movable bracket 5 and can move back and forth. The threaded main rod 602 can be screwed on the hexagonal nut 601 to adjust the height up and down, so the movable support ejector pin 6 can move back and forth on the movable bracket 5 through the hexagonal nut 601. The height of the movable support ejector pin 6 can be adjusted by screwing the threaded main rod 602 according to the height of the device in the PCBA board.

[0039] Working principle: When the PCBA product 7 is subjected to AOI inspection, if the PCBA that is irregular or has a metal frame or device on the edge cannot be fixed, as long as there are at least 3 (three points determine a plane) assembly holes 8 (mounting holes or vias) in the PCBA board, it can be positioned by adjusting the movable bracket 5 (X-axis movement) and the movable support ejector pin 6 (Y-axis movement), and the movable support ejector pin 6 is moved to the bottom of the mounting hole or via in the PCBA board. The height of the movable support ejector pin 6 (Z-axis movement) is adjusted according to the height of the device at the bottom of the PCBA board. In this way, the PCBA board can be fixed by the movable support ejector pin 6. In this embodiment, the carrier has a total of 4 movable support ejector pin positioning points, and the PCBA board can be fixed at 3 or 4 locations.

[0040] Figure 8 This is a schematic diagram of the use and installation of a universal carrier of AOI equipment for testing circular PCBA products in an embodiment of the utility model; the PCBA product 7 is a circular PCBA board without a process edge or with components on the edge (ignored in the figure) that cannot be fixed using conventional tooling. When using the universal carrier for AOI testing of this patent, first adjust the movable bracket 5 and the movable supporting ejector pin 6 of the carrier according to the positions of the four assembly holes 8 in the circular PCBA board, and after accurate alignment, vertically place the PCBA board on the universal carrier for AOI testing, and then AOI testing can be performed.

[0041] Fig. 9This is a schematic diagram of the use and installation of a universal carrier of AOI equipment for detecting irregular square PCBA products in another embodiment of the utility model; the PCBA product 7 is a square PCBA board without a process edge or with components on the edge (ignored in the figure) and cannot be fixed using a conventional tooling tool. The movable bracket 5 and the movable supporting ejector pin 6 of the carrier are adjusted, and the PCBA board is placed vertically on the AOI test universal carrier after accurate alignment, and the AOI test universal carrier of this patent is used to support and fix it at the three assembly holes 8 in the board.

[0042] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A universal carrier of AOI equipment for PCBA product inspection, for carrying a PCBA product (7), wherein the PCBA product (7) has at least three assembly holes (8), characterized in that: Comprising: At least three movable brackets (5), each of the movable brackets (5) being movable along the X-axis direction, and at least two of the at least three movable brackets (5) being oppositely arranged along the Y-axis direction; A plurality of movable support thimbles (6), at least one movable support thimble (6) being slidably arranged along the Y-axis direction of each of the movable brackets (5), the movable support thimble (6) including a thimble (603) movable along the Z-axis direction; Wherein, the positions of the thimbles (603) are made to correspond one by one with the assembly holes (8) of the PCBA product (7), and the thimbles (603) are inserted into the assembly holes (8) to support and fix the PCBA product (7).

2. The universal carrier of AOI equipment for PCBA product inspection according to claim 1, characterized in that: Further comprising: A main body frame (1), in a rectangular frame shape; Two track rods (2), symmetrically arranged along the Y-axis direction of the main body frame (1) and parallel to the main body frame (1); Four track rod fixing columns (3), both ends of each of the track rods (2) being connected to the main body frame (1) through the track rod fixing columns (3); At least three bracket sliding fixing blocks (4), at least two of the bracket sliding fixing blocks (4) being slidably connected to one of the track rods (2), at least one of the bracket sliding fixing blocks (4) being slidably connected to the other track rod (2), the bracket sliding fixing blocks (4) being fixedly connected to one end of the movable bracket (5).

3. The universal carrier of AOI equipment for PCBA product inspection according to claim 2, characterized in that: Each of the track rods (2) has a limiting portion (201) at the middle position.

4. The universal carrier of AOI equipment for PCBA product testing according to claim 2, characterized in that: The cross-section of the bracket sliding fixing block (4) is in an I shape.

5. The universal carrier of AOI equipment for PCBA product inspection according to claim 4, characterized in that: A track (202) is opened on the inner wall of the track rod (2), and the bracket sliding fixing block (4) slides along the track (202).

6. The general carrier for AOI equipment for PCBA product detection according to claim 1, characterized in that A chute (501) is opened along the length direction of the movable bracket (5); The movable support thimble (6) further includes a hexagonal nut (601); Wherein, the hexagonal nut (601) is slidably connected to the chute (501).

7. The universal carrier of AOI equipment for PCBA product inspection according to claim 6, characterized in that: The movable support thimble (6) further includes a threaded main rod (602), the threaded main rod (602) being threadedly connected to the hexagonal nut (601), and the thimble (603) being installed at the head (6021) of the threaded main rod (602).

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