Anti-warping auxiliary device for detecting flexible circuit board

Abstract

The utility model relates to an anti-warping auxiliary device for detecting a flexible circuit board, which comprises a working table, the working table is provided with a conveying assembly, the conveying assembly comprises an annular conveying structure and a plurality of carrying tables uniformly and circumferentially arranged on the annular conveying structure, the flexible circuit board is placed on the carrying tables, and the annular conveying structure can drive the carrying tables to rotate; the image acquisition assembly comprises a camera bracket, a cross-shaped fixing clamp, a camera main body and a light supplementing lamp; and the pressing plate assembly comprises a mounting plate, a driving piece, a connecting piece, a connecting rod, a sliding cylinder and a pressing plate main body, and the driving piece can drive the connecting rod to move up and down along the sliding cylinder on the mounting plate so as to drive the pressing plate main body to move up and down and flatten the flexible circuit board below the pressing plate main body. According to the utility model, the tilting phenomenon of the flexible circuit board in the detection process can be prevented, so that the detection efficiency and the detection accuracy are improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary device for detecting a flexible circuit board, in particular to an anti-warping auxiliary device for detecting a flexible circuit board, and belongs to the technical field of circuit board detection. Background Art

[0002] A flexible circuit board is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material. After the production of the flexible circuit board, it is necessary to detect the finished product to determine whether it meets the production requirements; during the surface defect detection process of the flexible circuit board, the flexible circuit board is extremely prone to warping. Once the flexible circuit board warps, it will affect the detection effect. At present, the detection of flexible circuit boards mainly relies on visual inspection. When detecting, if the circuit board warps, it will cause problems such as reflection, which will further affect the detection effect of the circuit board.

[0003] How to prevent the flexible circuit board from warping during the detection process has always troubled the industry insiders. At present, there is no simple and portable auxiliary device for preventing the circuit board from warping in the field of flexible circuit board surface defect detection. Therefore, it is very necessary to design an anti-warping auxiliary device for detecting flexible circuit boards. Summary of the Utility Model

[0004] The utility model mainly aims at the above problems existing in the prior art, and provides an anti-warping auxiliary device for detecting a flexible circuit board, which can prevent the flexible circuit board from warping during the detection process.

[0005] The purpose of the utility model is mainly achieved through the following solutions:

[0006] An anti-warping auxiliary device for detecting a flexible circuit board, including a workbench, on which are installed: a conveying component, which includes an annular conveying structure and a plurality of carriers evenly arranged in a circumferential manner on the annular conveying structure. The flexible circuit board is placed on the carriers, and the annular conveying structure can drive the carriers to rotate; an image acquisition component, which includes a camera support, a cross fixing clip, a camera body and a fill light. The camera support is vertically installed on the workbench, the camera body is installed on the camera support through the cross fixing clip, the fill light is installed on the camera support and is located below the camera body; a pressing plate component, which includes a mounting plate, a driving member, a connecting member, a connecting rod, a sliding cylinder and a pressing plate body. The mounting plate is vertically installed on the workbench, the driving member is installed on the upper part of the mounting plate and is movably connected with the connecting member, the connecting member is movably connected with the connecting rod, the lower end of the connecting rod is connected with a horizontally arranged pressing plate body, and the driving member can drive the connecting rod to move up and down along the sliding cylinder on the mounting plate, thereby driving the pressing plate body to move up and down and pressing the flexible circuit board located below the pressing plate body flat.

[0007] Preferably, the camera bracket can be installed on the inner or outer side of the annular conveyor structure.

[0008] Preferably, the cross fixing clip includes a slider and a horizontal clip rod. The slider is respectively provided with a first sliding hole vertically penetrating therethrough and a second sliding hole horizontally penetrating therethrough. The slider is slidably connected to the camera bracket through the first sliding hole, and the fixation between the slider and the camera bracket is achieved by a first locking bolt passing through the first sliding hole.

[0009] Preferably, one end of the horizontal clip rod is provided with a horizontal rod, and the other end is provided with a U-shaped clamping plate. The horizontal rod is slidably connected to the slider through the second sliding hole, and the fixation between the slider and the horizontal clip rod is achieved by a second locking bolt passing through the second sliding hole.

[0010] Preferably, the two sides of the U-shaped clamping plate are symmetrically threadedly connected with third locking bolts. The inner ends of the third locking bolts are connected with clamping blocks, and the camera body is located between the two clamping blocks.

[0011] Preferably, the fill light adopts an annular fill light.

[0012] Preferably, the bottom of the mounting plate is connected with a fixing plate, and a reinforcing rib is provided between the fixing plate and the mounting plate.

[0013] Preferably, the driving member includes a servo body and a servo piece fixedly connected to the output shaft of the servo body. One end of the servo piece away from the output shaft of the servo body is rotatably connected to the upper end of the connecting piece, the lower end of the connecting piece is rotatably connected to the upper end of the connecting rod, the sliding cylinder is vertically installed on one side of the mounting plate, and the connecting rod is slidably connected to the sliding cylinder.

[0014] Preferably, the sliding cylinder is provided with a vertically penetrating limiting hole, the connecting rod is adapted to the limiting hole, and the connecting rod can move up and down along the limiting hole.

[0015] Preferably, the pressing plate body adopts a single-sided frosted acrylic plate.

[0016] Therefore, compared with the prior art, the present utility model has the following advantages:

[0017] (1) By means of the provided annular conveyor structure and the carrier, the present utility model can convey the flexible circuit board on the carrier to the working position of the pressing plate assembly along a certain path, so as to flatten and detect the flexible circuit board;

[0018] (2) By means of the provided camera bracket, cross fixing clip, camera body and fill light, the cross fixing clip is used to lock the camera body and can adjust the position of the camera body. The camera body is used to detect and record the situation of the flexible circuit board, and the fill light is used to supplement light to ensure the image acquisition effect;

[0019] (3) Through the provided mounting plate, driving member, connecting member, connecting rod, sliding cylinder and pressing plate body, the present utility model can drive the pressing plate body to move up and down under the driving action of the driving member, and then can flatten the flexible circuit board, preventing warping during the detection process, thereby ensuring accurate results during the photographing process;

[0020] (4) The designed structure of the present utility model enables it to effectively complete the light filling, flattening and photographing processes of the flexible circuit board in the detection scenario of the annular conveying structure, providing necessary support and guarantee for subsequent analysis and processing of the flexible circuit board, and improving the detection efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is the front view of the present utility model;

[0023] Figure 3 is the top view of the present utility model;

[0024] Figure 4 is the schematic structural view of the image acquisition component in the present utility model;

[0025] Figure 5 is the schematic structural view of the pressing plate component in the present utility model;

[0026] Figure 6 is the schematic structural view of the sliding cylinder and the connecting rod in the present utility model.

[0027] Illustration: 1 - Workbench, 2 - Annular conveying structure, 3 - Carrier, 4 - Camera support, 5 - Cross fixing clamp, 6 - Camera body, 7 - Fill light, 8 - Mounting plate, 9 - Driving member, 10 - Connecting member, 11 - Connecting rod, 12 - Sliding cylinder, 13 - Pressing plate body, 14 - Slide block, 15 - Horizontal clamping rod, 16 - First sliding hole, 17 - Second sliding hole, 18 - First locking bolt, 19 - Second locking bolt, 20 - Third locking bolt, 21 - Clamping block, 22 - Fixing plate, 23 - Reinforcing rib, 24 - Servo body, 25 - Servo plate, 26 - Limiting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions of the present utility model will be further specifically described below through specific embodiments in combination with the drawings. It should be understood that the implementation of the present utility model is not limited to the following embodiments, and any form of modification and / or change made to the present utility model will fall within the protection scope of the present utility model.

[0029] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are common standard parts or components known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or by conventional experimental methods. Embodiment 1

[0030] As Figure 1 、 2 、shown in Figure 3, the present utility model provides a technical solution, an anti-warping auxiliary device for flexible circuit board detection, which is applicable to the detection occasion of circular transmission and is generally used for detecting smaller flexible circuit boards. It is composed of a workbench 1 and a transmission component, an image acquisition component and a pressing plate component installed on the workbench 1.

[0031] The above-mentioned transmission component is composed of a circular transmission structure 2 and a plurality of carriers 3 evenly arranged in a circumferential manner on the circular transmission structure 2. The flexible circuit board 27 is placed on the carrier 3, and the circular transmission structure 2 can drive the carrier 3 to rotate along a set path; the circular transmission structure 2 is a prior art and can be purchased from the market. In this embodiment, a specific structure of the circular transmission structure 2 can also be provided, which is composed of a driving motor and a cylindrical barrel. The driving motor is fixedly installed on the lower surface of the workbench 1 through bolts. The lower end of the cylindrical barrel is closed and the upper end is open. The lower end of the cylindrical barrel is rotatably connected to the workbench 1 through a bearing. The output shaft of the driving motor passes through the workbench 1 and is fixedly connected to the middle of the lower end of the cylindrical barrel. The rotation of the output shaft of the driving motor can drive the cylindrical barrel to rotate. Four carriers 3 are evenly arranged in a circumferential manner along the axis of the cylindrical barrel and are fixedly installed on the cylindrical barrel through bolts, but are not limited to the above structure, as long as the carrier 3 can be driven to rotate along a set path.

[0032] The above-mentioned image acquisition component is composed of a camera bracket 4, a cross fixing clip 5, a camera body 6 and a fill light 7. The camera bracket 4 is vertically fixedly installed on the upper surface of the workbench 1 through bolts. The camera body 6 is installed on the camera bracket 4 through the cross fixing clip 5. The fill light 7 is installed on the camera bracket 4 and is located below the camera body 6. The cross fixing clip 5 is used to lock the camera body 4 and can adjust the position of the camera body 4. The camera body 4 is used to detect and record the situation of the flexible circuit board 27, and the fill light 7 is used to supplement light to ensure the image acquisition effect.

[0033] The above-mentioned pressing plate assembly is composed of a mounting plate 8, a driving member 9, a connecting member 10, a connecting rod 11, a sliding cylinder 12 and a pressing plate main body 13. The mounting plate 8 is vertically installed on the workbench 1 and is located outside the annular conveying structure 2. The driving member 9 is detachably and fixedly installed on the upper part of the mounting plate 8 through bolts and is movably connected to one end of the connecting member 10. The other end of the connecting member 10 is movably connected to the connecting rod 11. The lower end of the connecting rod 11 is also fixedly connected to a horizontally arranged pressing plate main body 13. The driving member 9 can drive the connecting rod 11 to move up and down along the sliding cylinder 12 on the mounting plate 8, and then drive the pressing plate main body 13 to move up and down, and flatten the flexible circuit board 27 located below the pressing plate main body 13. The device should be provided with a controller, such as a PLC controller or a single-chip microcomputer, which can be electrically connected to the camera main body 6, the annular conveying structure 2 and the driving member 9 for controlling their work. Its specific structure and circuit are not within the protection scope of this application, and those skilled in the art can obtain them through common general knowledge, conventional means or simple derivation in this field, so it will not be elaborated here. Embodiment 2

[0034] As Figure 1 , 4 shown, the present utility model provides another technical solution, an anti-warping auxiliary device for flexible circuit board detection, which is different from that of Embodiment 1 in that the camera bracket 4 can be installed outside or inside the annular conveying structure 2, and its specific installation position can be determined according to the structure of the annular conveying structure 2, and it should not affect the normal operation of the annular conveying structure 2.

[0035] Specifically, the cross fixing clip 5 is composed of a slider 14 and a horizontal clamping rod 15. The slider 14 is respectively provided with a first sliding hole 16 vertically penetrating and a second sliding hole 17 horizontally penetrating. The slider 14 is slidably connected to the camera bracket 4 through the first sliding hole 16, and the fixing between the slider 14 and the camera bracket 4 is realized through a first locking bolt 18 passing through the first sliding hole 16, so as to be able to adjust the up and down positions of the horizontal clamping rod 15 and the camera main body 6.

[0036] Specifically, one end of the horizontal clamping rod 15 is provided with a horizontal rod, and the other end is integrally provided with a U-shaped clamping plate. The horizontal rod is slidably connected to the slider 14 through the second sliding hole 17, and the fixing between the slider 14 and the horizontal clamping rod 15 is realized through a second locking bolt 19 passing through the second sliding hole 17, so as to be able to adjust the horizontal protruding position of the U-shaped clamping plate and the camera main body 6.

[0037] Specifically, the two sides of the U-shaped clamping plate are symmetrically threadedly connected with third locking bolts 20. The inner ends of the third locking bolts 20 are fixedly connected with clamping blocks 21. The upper part of the camera main body 6 is located between the two clamping blocks 21, and the camera main body 6 can be clamped and loosened by the two clamping blocks 21.

[0038] Specifically, the supplementary light 7 uses a ring-shaped supplementary light. The camera of the camera body 6 is set downward, and its capture field of view passes through the middle of the ring-shaped supplementary light. Embodiment 3

[0039] As Figure 1 , 5 shown, the present utility model provides another technical solution, an anti-warping auxiliary device for flexible circuit board detection. Different from Embodiment 1, a horizontally arranged fixing plate 22 is welded to the bottom of the mounting plate 8. The fixing plate 22 is fixedly installed on the workbench 1 by bolts, and a reinforcing rib 23 is welded between the fixing plate 22 and the mounting plate 8. The reinforcing rib 23 can increase the structural stiffness of the pressing plate assembly, making it more stable, not easily deformed or with less deformation, and being able to provide better supporting force during the pressing operation.

[0040] Specifically, the driving member 9 is composed of a servo body 24 and a servo piece 25 fixedly connected to the output shaft of the servo body 24. The servo body 24, as an actuator, can be purchased on the market and is fixedly installed on the upper end of the mounting plate 8 by bolts, capable of providing power for the pressing plate assembly. The servo body 24 can drive one end of the servo piece 25 to rotate. One end of the servo piece 25 far from the output shaft of the servo body 24 is rotatably connected to the upper end of the connecting member 10 through a rotating shaft. Additionally, a plurality of rotating holes connected to the connecting member 10 can be provided on the servo piece 25. The lower end of the connecting member 10 is rotatably connected to the upper end of the connecting rod 11 through a rotating shaft. The connecting member 10 and the connecting rod 11 can move in coordination with the servo piece 25, enabling the pressing plate main body 13 to move freely in the vertical direction. The sliding cylinder 12 is vertically bonded or bolted to one side of the mounting plate 8, and the connecting rod 11 is slidably connected to the sliding cylinder 12.

[0041] As Figure 6 shown, a vertically penetrating limiting hole 26 is formed in the sliding cylinder 12. The limiting hole 26 includes a circular hole in the middle and square holes on both sides that are connected and communicate. The connecting rod 11 is adapted to the shape of the limiting hole 26, and the connecting rod 11 can only move up and down along the limiting hole 26. The cooperation between the sliding cylinder 12 and the connecting rod 11 restricts the movement of the pressing plate main body 13 in the horizontal direction.

[0042] Specifically, the pressing plate body 13 is made of a single-sided frosted acrylic plate. Through the movement of components such as the servo body 24, the pressing plate body 13 can move freely in the vertical direction and is used to flatten the flexible circuit board 27. The flattening operation of the flexible circuit board 27 and the function of reducing the reflection phenomenon are achieved through the pressing plate body 13. During installation, its frosted surface should be set downward. By placing the flexible circuit board 27 under the single-sided frosted acrylic plate, the flexible circuit board 27 can be effectively flattened, thereby reducing or eliminating the reflection problem caused by the warping of the board surface. The special surface treatment of the single-sided frosted acrylic plate can scatter the reflected light and reduce the possibility of light directly reflecting back to the camera body 6, thereby improving the clarity and recognition accuracy of the image. The use of the single-sided frosted acrylic plate can not only improve the detection effect, but also protect the surface of the flexible circuit board 27 from dust and scratches, further enhancing the stability and reliability of the detection process. Through this improvement, it can be ensured that the flexible circuit board 27 always remains flat during the detection process, providing a solid foundation for high-quality visual detection. During specific operation, first place the flexible circuit board 27 on the stage 3, and start the annular conveying structure 2. The annular conveying structure can convey the stage 3 and the flexible circuit board 27 to the lower part of the pressing plate body 27 along a set path. At this time, the controller controls the servo body 24 and the camera body 6 to work. When the pressing plate body 24 presses down the flexible circuit board 27, the camera body 6 can take pictures and transmit them to the background for analysis and processing. Among them, the camera body 6 can continuously take multiple pictures when the pressing plate body 13 presses down for the background to refer to and analyze, so as to improve the detection accuracy and accuracy.

[0043] The anti-warping auxiliary device for flexible circuit board detection provided by the present utility model can convey the flexible circuit board on the stage to the working position of the pressing plate assembly along a certain path through the provided annular conveying structure and stage, so as to flatten and detect the flexible circuit board; through the provided camera bracket, cross fixing clip, camera body and fill light, the cross fixing clip is used to lock the camera body and can adjust the position of the camera body. The camera body is used to detect and record the situation of the flexible circuit board, and the fill light is used to supplement light to ensure the image acquisition effect; through the provided mounting plate, driving member, connecting member, connecting rod, sliding cylinder and pressing plate body, it can drive the pressing plate body to move up and down under the driving action of the driving member, and then flatten the flexible circuit board to prevent warping during the detection process, so as to ensure accurate results can be obtained during the photographing process; the design structure of this application is simple, enabling it to effectively complete the light supplement, flattening and photographing of the flexible circuit board in the detection occasion of the annular conveying structure, providing necessary support and guarantee for the subsequent analysis and processing of the flexible circuit board, and improving the detection efficiency and accuracy.

[0044] It should be understood that this embodiment is only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. An anti-warping auxiliary device for flexible circuit board inspection, comprising a workbench (1), characterized in that: The workbench (1) is equipped with: A conveying assembly, the conveying assembly comprising an annular conveying structure (2) and a plurality of carriers (3) uniformly arranged on the annular conveying structure (2), the flexible circuit board (27) being placed on the carriers (3), and the annular conveying structure (2) being capable of driving the carriers (3) to rotate; An image acquisition component, the image acquisition component comprising a camera support (4), a cross fixing clamp (5), a camera body (6) and a fill light (7), the camera support (4) being vertically mounted on a workbench (1), the camera body (6) being mounted on the camera support (4) via the cross fixing clamp (5), and the fill light (7) being mounted on the camera support (4) and being located below the camera body (6); A pressure plate assembly, the pressure plate assembly comprising a mounting plate (8), a driving member (9), a connecting member (10), a connecting rod (11), a slide cylinder (12) and a pressure plate body (13), the mounting plate (8) being vertically mounted on a workbench (1), the driving member (9) being mounted on the upper part of the mounting plate (8) and being movably connected to the connecting member (10), the connecting member (10) being movably connected to the connecting rod (11), the lower end of the connecting rod (11) being connected to a horizontally arranged pressure plate body (13), the driving member (9) being able to drive the connecting rod (11) to move up and down along the slide cylinder (12) on the mounting plate (8), thereby driving the pressure plate body (13) to move up and down, and flattening a flexible circuit board (27) located below the pressure plate body (13).

2. The anti-warping auxiliary device for flexible circuit board detection according to claim 1, characterized in that: The camera bracket (4) can be installed on the outside or inside of the annular transmission structure (2).

3. The anti-warping auxiliary device for flexible circuit board detection according to claim 2, characterized in that: The cross fixing clamp (5) comprises a slider (14) and a horizontal clamp rod (15); the slider (14) is provided with a first sliding hole (16) penetrating vertically and a second sliding hole (17) penetrating horizontally; the slider (14) is slidably connected to the camera bracket (4) via the first sliding hole (16), and the slider (14) and the camera bracket (4) are fixed by a first locking bolt (18) passing through the first sliding hole (16).

4. The anti-warping auxiliary device for flexible circuit board detection according to claim 3, characterized in that: One end of the horizontal clamping rod (15) is provided with a horizontal rod, and the other end is provided with a U-shaped clamping plate. The horizontal rod is slidably connected to the slider (14) through a second sliding hole (17), and the slider (14) and the horizontal clamping rod (15) are fixed by a second locking bolt (19) passing through the second sliding hole (17).

5. The anti-warping auxiliary device for flexible circuit board detection according to claim 4, characterized in that: The two sides of the U-shaped clamping plate are symmetrically threadedly connected with third locking bolts (20), the inner end of the third locking bolt (20) is connected with a clamping block (21), and the camera body (6) is located between the two clamping blocks (21).

6. The anti-warping auxiliary device for flexible circuit board detection according to claim 5, characterized in that: The fill light (7) is a ring-shaped fill light.

7. The anti-warping auxiliary device for flexible circuit board detection according to claim 1, characterized in that: The bottom of the mounting plate (8) is connected to a fixing plate (22), and a reinforcing rib (23) is provided between the fixing plate (22) and the mounting plate (8).

8. The anti-warping auxiliary device for flexible circuit board detection according to claim 7, characterized in that: The driving member (9) comprises a steering gear body (24) and a steering gear sheet (25) fixedly connected to the output shaft of the steering gear body (24); one end of the steering gear sheet (25) away from the output shaft of the steering gear body (24) is rotatably connected to the upper end of the connecting member (10); the lower end of the connecting member (10) is rotatably connected to the upper end of the connecting rod (11); the slide cylinder (12) is vertically mounted on one side of the mounting plate (8); and the connecting rod (11) and the slide cylinder (12) are slidably connected.

9. The anti-warping auxiliary device for flexible circuit board detection according to claim 8, characterized in that: The slide cylinder (12) is provided with a limiting hole (26) which passes through vertically, the connecting rod (11) is adapted to the limiting hole (26), and the connecting rod (11) can move up and down along the limiting hole (26).

10. The anti-warping auxiliary device for flexible circuit board detection according to claim 9, characterized in that: The pressing plate body (13) is made of a single-sided frosted acrylic plate.

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