Universal clamping device for PCB (Printed Circuit Board)

Abstract

The utility model belongs to the field of circuit board detection, in particular to a universal clamping device for a PCB (Printed Circuit Board), which comprises a base, a base pillar and two sliding clamping devices, a plurality of base pillar mounting holes and a plurality of strip-shaped tracks are arranged on the base, the base pillar mounting holes are uniformly distributed on the base, and the strip-shaped tracks are positioned on two adjacent sides of the base; the base supporting column is detachably mounted in the base supporting column mounting hole of the base; the two sliding clamping devices slide in the strip-shaped rails on the two adjacent sides of the base respectively and are clamped and fixed to the two sides of the circuit board. According to the utility model, the base pillar mounting holes and the base pillars are designed according to circuit board bottom welding spots and component gaps, and the sliding clamping device on the strip-shaped track is used for matching and adapting to clamping of circuit boards with different sizes; abnormal conditions such as mistakes, omissions and reverses, cold solder joints, solder skips, short circuits, missing parts and the like of various components can be automatically identified in the circuit board detection process, so that the detection efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board inspection, and in particular to a device for general PCB clamping. Background Technology

[0002] In routine circuit board inspection, two main methods are used: AOI (Automated Optical Inspection) and human inspection. AOI involves programming and inputting the information of all components on the circuit board into the AOI equipment, then placing the circuit board into the equipment for automatic detection and identification. Human inspection involves inspectors using a magnifying glass to examine each component on the circuit board. AOI equipment offers high accuracy and efficiency, but the initial programming and debugging process is time-consuming. When the number of circuit boards is small or when a circuit board cannot fit into the AOI equipment (the circuit board must be placed on the guide rails with no components within 5mm of its edges), inspectors typically use a magnifying glass for inspection.

[0003] When using AOI equipment for inspection, the circuit board needs to be placed and fixed on the AOI guide rail. However, since current PCB designs do not consider the subsequent AOI inspection process, many circuit boards have components on their edges. If the circuit board is placed on the AOI guide rail, these components will interfere with the rail, potentially causing component damage. This prevents AOI inspection and significantly reduces inspection efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device that can fix circuit boards using an adjustable universal clamping device for PCBs. This helps to automatically identify various abnormalities such as incorrect, missing, reversed, poorly soldered, short-circuited, and missing components during the circuit board inspection process, thereby improving inspection efficiency.

[0005] The technical solution adopted by this utility model to solve the technical problem is:

[0006] This utility model provides a device for universal PCB clamping, comprising: a base, a base support, and two sliding clamping devices. The base has multiple base support mounting holes and multiple strip tracks. The base support mounting holes are evenly distributed on the base, and the strip tracks are located on adjacent sides of the base. The base support is detachably installed in the base support mounting holes of the base. The two sliding clamping devices slide in the strip tracks on adjacent sides of the base and clamp and fix them to the sides of the circuit board.

[0007] Furthermore, the base has a bottom plate and two side plates, the base support mounting holes and the strip track are disposed on the bottom plate of the base, and the two side plates are respectively connected to the bottom plates on the adjacent sides of the strip track.

[0008] Furthermore, the base support is a cap structure with a bottom cylinder connecting to a top hemisphere. The bottom cylinder is used to insert the base support into the base, and the top hemisphere is used to support the circuit board.

[0009] Furthermore, the sliding clamping device includes a sliding member and a locking member. The sliding member has a structure in which a bottom threaded post connects to a top cylinder. The bottom threaded post is used to fix the sliding clamping device to the base through the locking member, and the top cylinder is used to fix the circuit board. The locking member is a locking nut.

[0010] Furthermore, the locking nut is a straw locking nut, a nylon insert locking nut, or a hexagonal nut.

[0011] The advantages and positive effects of this utility model are:

[0012] This invention incorporates mounting holes for the base support and the base support itself, designed according to the solder joints and component gaps at the bottom of the circuit board. It also utilizes a sliding clamping device on a strip track to accommodate circuit boards of different sizes, making the device a universal tooling for different types of circuit boards. This helps to automatically identify various abnormalities such as component errors, omissions, reversed components, poor soldering, missing solder, short circuits, and missing parts during circuit board inspection, thereby improving inspection efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the device for universal PCB clamping according to the present invention;

[0014] Figure 2 A schematic diagram of the structure of the device for placing circuit boards in the universal PCB clamp of this utility model;

[0015] Figure 3 A side view of the device for placing a circuit board in the universal PCB clamp of this invention;

[0016] Figure 4 This is a schematic diagram of the structure of the base of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the base support column of this utility model;

[0018] Figure 6 This is a schematic diagram of the slider of this utility model from a first-view perspective;

[0019] Figure 7 This is a schematic diagram of the slider of this utility model from a second perspective;

[0020] Figure 8 This is a schematic diagram of the overall structure of the AOI equipment;

[0021] Figure 9 This is a schematic diagram of the structure of the PCB universal clamping device of this utility model placed on an AOI device.

[0022] The above figures include the following reference numerals:

[0023] 1-Base; 11-Base plate; 12-Side baffle; 13-Base support mounting hole; 14-Strip track; 2-Base support; 21-Bottom cylinder; 22-Top hemisphere; 3-Sliding clamping device; 31-Sliding component; 311-Bottom threaded column; 312-Top cylinder; 4-Circuit board; 5-AOI guide rail; 6-Display screen. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] like Figures 1-9 As shown, this utility model provides a device for universal PCB clamping, including: a base 1, a base support 2, and two sliding clamping devices 3.

[0028] like Figures 1-4As shown, the base 1 has multiple base support mounting holes 13 and multiple strip tracks 14. The base support mounting holes 13 are evenly distributed on the base 1, and the strip tracks 14 are located on adjacent sides of the base 1. The base 1 of this invention is used to align and fix with the outermost ends of the circuit board 4 and to mount the base supports 2. Figure 4 As shown, the base 1 has a base plate 11 and two side baffles 12. The base support mounting holes 13 and the strip rails 14 are disposed on the base plate 11 of the base 1. The two side baffles are respectively connected to the base plates 11 on the adjacent sides of the strip rails 14. The base support mounting holes 13 are used to install the base support 2, and the strip rails 14 are used to install the sliding clamping device 3.

[0029] like Figures 1-5 As shown, the base support 2 is detachably installed in the base support mounting hole 13 of the base 1. The base support 2 of this invention supports the circuit board 4, and its position can be adjusted according to the component positions, solder joint conditions, and PCB size of the circuit board 4 to accommodate different models of circuit boards 4. Figure 5 As shown, the base support 2 is a top cap structure with a bottom cylinder 21 connected to a top hemisphere 22. The bottom cylinder 21 is used to insert the base support 2 into the base 1, and the top hemisphere 22 is used to support the circuit board 4.

[0030] like Figures 1-7 As shown, the two sliding clamping devices 3 slide within the strip tracks 14 on adjacent sides of the base 1, respectively, and clamp and fix them to both sides of the circuit board 4. The sliding clamping devices 3 of this invention can slide and adjust on the strip tracks 14 of the base plate 11 to accommodate PCBs of different sizes. Figure 3 , Figure 6 , Figure 7 As shown, the sliding clamping device 3 includes a sliding member 31 and a locking member. The sliding member 31 has a structure in which a bottom threaded post 311 connects to a top cylinder 312. The bottom threaded post 311 is used to fix the sliding clamping device 3 to the base 1 through the locking member, and the top cylinder 312 is used to fix the circuit board 4. The locking member is a locking nut. Optionally, the locking nut is a straw locking nut, a nylon insert locking nut, or a hexagonal nut.

[0031] The installation and use method of this utility model is as follows:

[0032] 1) First, select a suitable mounting hole 13 for the base support and insert the base support 2 into the base 1. When selecting the mounting hole 13, make sure that there are no components or large solder joints on the circuit board 4 corresponding to the base support 2. Note that the base support 2 should not interfere with the solder joints or components on the bottom of the circuit board 4. Then insert the base support 2 into the mounting hole 13.

[0033] 2) Next, place the circuit board 4 on the base support 2 so that the edge of the circuit board 4 is close to the side baffle 12 of the base 1.

[0034] 3) Then adjust the sliding parts 31 of the two sliding clamping devices 3 to the appropriate positions to ensure that the two sliding clamping devices 3 can clamp the circuit board 4, and tighten the sliding parts 31 with the locking nuts below, such as... Figure 2 , Figure 3 As shown.

[0035] 4) Adjust the position of AOI guide rail 5, such as... Figure 8 As shown, the device for universal PCB clamping of this invention is then placed on the AOI guide rail 5, as follows. Figure 9 As shown, normal testing can begin, and the results will be displayed on screen 6.

[0036] The features of this device are as follows: In the past, circuit board tooling was designed with one tooling per board, and different circuit boards 4 required different tooling due to their different designs. This device is designed with base support mounting holes 13 and base support 2 according to the solder joints on the bottom of the circuit board and the gaps between components. It also uses a sliding clamping device 3 on the strip track 14 to accommodate the clamping of circuit boards 4 of different sizes. This makes the device a universal tooling for different types of circuit boards 4. It helps to automatically identify various abnormalities such as incorrect, missing, reversed, cold solder joints, short circuits, and missing components during the inspection of circuit boards 4, thereby improving inspection efficiency.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for universal clamping of PCBs, characterized in that, The utility model relates to a circuit board fixing device, including: a base (1) with a plurality of base pillar mounting holes (13) and a plurality of strip tracks (14) on it, the base pillar mounting holes (13) are evenly distributed on the base (1), and the strip tracks (14) are located on the adjacent two sides of the base (1); a base pillar (2) which is detachably mounted in the base pillar mounting hole (13) of the base (1); two sliding clamping devices (3) which slide in the strip tracks (14) on the adjacent two sides of the base (1) respectively and clamp and fix the two sides of the circuit board (4).

2. The device for universal clamping of PCBs according to claim 1, characterized in that, The base (1) has a bottom plate (11) and two side plates (12), the base pillar mounting hole (13) and the strip track (14) are arranged on the bottom plate (11) of the base (1), and the two side plates (12) are connected with the bottom plate (11) on the adjacent two sides where the strip track (14) is located respectively.

3. The device for universal clamping of PCBs according to claim 2, characterized in that, The base pillar (2) is a top hat structure with a bottom cylinder (21) connected with a top hemisphere (22), the bottom cylinder (21) is used for inserting the base pillar (2) into the base (1), and the top hemisphere (22) is used for supporting the circuit board (4).

4. The device for universal clamping of PCBs according to claim 3, characterized in that, The sliding clamping device (3) includes a sliding piece (31) and a locking piece, the sliding piece (31) is a structure with a bottom threaded column (311) connected with a top cylinder (312), the bottom threaded column (311) is used for fixing the sliding clamping device (3) to the base (1) through the locking piece, and the top cylinder (312) is used for fixing the circuit board (4), and the locking piece is a locking nut.

5. The device for universal clamping of PCBs according to claim 4, characterized in that, The locking nut is a straw locking nut or a nylon insert locking nut or a hexagonal nut. The locking nut is a straw locking nut or a nylon insert locking nut or a hexagonal nut.

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