Detection device

Abstract

A detection device is used for detecting a cavity in a flexible circuit board, the flexible circuit board comprises a first end, a bending area and a second end, and the cavity is located in the bending area. The detection device comprises a base, a first fixing assembly, a second fixing assembly, a rotating assembly, an oblique movement assembly and a lens module. The first fixing assembly is fixed to the base and used for fixing the first end. The second fixing assembly is used for fixing the second end; the rotating assembly is fixed to the second fixing assembly and used for enabling the second end to rotate relative to the first end so that the bending area can be bent. The oblique movement assembly comprises a fixed part and a movable part, the fixed part is fixed to the base, the movable part can move relative to the fixed part, and the movable part is fixed to the rotating assembly and used for driving the second fixed assembly to move relative to the direction in which an acute angle is formed between the second fixed assembly and the first end, so that the bent bending area is twisted; the lens module corresponds to the cavity in the bending area in position so as to shoot the distorted cavity in the bending area.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board cavity detection, and in particular to a detection device. Background Art

[0002] Flexible Printed Circuit (FPC) is an indispensable component in flexible screens. Since flexible screens are folded many times, cavities are usually set in FPCs to improve the folding performance of flexible screens in order to disperse stress. The cavity is formed by the surrounding of the adhesive layer. In the process of making FPC, the adhesive layer around the cavity is prone to adhesion, resulting in reduced softness of the FPC. Before FPC leaves the factory, manual visual inspection is usually used to determine whether the adhesive layer is adhered, which is prone to misjudgment, especially adhesion in small areas, which is difficult to judge manually, causing quality risks. Summary of the invention

[0003] In view of this, it is necessary to provide a detection device with accurate detection to solve the above problems.

[0004] A detection device is used to detect a cavity in a flexible circuit board. The flexible circuit board includes a first end, a bending area and a second end connected in sequence. The cavity is located in the bending area. The detection device includes a base, a first fixed component, a second fixed component, a rotating component, an oblique motion component and a lens module. The first fixed component is fixed on the base, and the first fixed component is used to fix the first end; the second fixed component is used to fix the second end, and the second fixed component is spaced apart from the first fixed component; the rotating component is fixed to the second fixed component, and is used to rotate the second end relative to the first end so that the bending area is bent; the oblique motion component includes a fixed part and a moving part, the fixed part is fixed on the base, the moving part can move relative to the fixed part, and the moving part is fixed to the rotating component, and is used to drive the second fixed component to move in an acute angle relative to the first end so that the bending area is distorted after bending; the lens module corresponds to the position of the cavity in the bending area to photograph the cavity in the distorted bending area.

[0005] In some embodiments of the present application, the first fixed assembly includes a first bearing seat, a pressing piece and a first cylinder; the first bearing seat is fixed on the base, and the first bearing seat is used to support the first end; the first cylinder is connected to the pressing piece, and the first cylinder is used to drive the pressing piece to move relative to the first bearing seat, so that the first end can be fixed between the first bearing seat and the pressing piece.

[0006] In some embodiments of the present application, a first through hole is provided on the first bearing seat, and the first end can cover the first through hole; the first fixing component also includes a vacuum suction component, and before the first end is fixed between the first bearing seat and the pressing member, the vacuum suction component is used to suction the first end through the first through hole.

[0007] In some embodiments of the present application, the second fixing component is spaced apart from the first fixing component; the second fixing component includes a second bearing seat and a pressing plate, and the second end can be fixed between the second bearing seat and the pressing plate.

[0008] In some embodiments of the present application, the rotating component includes a third supporting seat, a first gear, a second gear and a fixed plate; the first gear is movably arranged on the third supporting seat, the second gear is meshed with the first gear, and the fixed plate is fixed to the second supporting seat; the second gear is used to drive the first gear to rotate, so that the second fixed component rotates, and thereby the second end is bent relative to the first end.

[0009] In some embodiments of the present application, the rotating assembly also includes a limit block, which includes a main body and a protruding portion, the main body is sleeved on the first gear, and the protruding portion is arranged on a partial edge area of ​​the main body; a limit groove is opened on the third bearing seat, part of the main body is accommodated in the limit groove, and the protruding portion is located outside the limit groove; when the first gear rotates to a certain angle, the protruding portion can be abutted against the peripheral wall of the limit groove to prevent the protruding portion from entering the limit groove.

[0010] In some embodiments of the present application, the second gear includes a rod portion and a gear portion, the gear portion is sleeved on the circumference of the rod portion, and the gear portion is meshed with the first gear; the limit block and the fixing plate are located on opposite sides of the gear portion and are both fixed on the rod portion.

[0011] In some embodiments of the present application, the moving member is fixed to the third supporting seat.

[0012] In some embodiments of the present application, the rod is provided with a second through hole, the lens module is arranged on the side of the second gear away from the first fixing component, and the lens module is used to photograph the bending area through the second through hole.

[0013] In some embodiments of the present application, the detection device further includes a light source, and the light source and the lens module are arranged on opposite sides of the first fixing component, and the light source, the second through hole and the lens module are on the same straight line.

[0014] The detection device provided in the present application can replace manual detection of whether the FPC is qualified, reduce the probability of misjudgment, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic cross-sectional view of a qualified flexible circuit board provided in an embodiment of the present application.

[0016] Figure 2 A schematic cross-sectional view of a failed flexible circuit board provided by an embodiment.

[0017] Figure 3A schematic cross-sectional view of a failed flexible circuit board provided in another embodiment.

[0018] Figure 4 A schematic diagram of the structure of a detection device provided in an embodiment of the present application.

[0019] Figure 5 for Figure 4 A schematic structural diagram of some components of the detection device shown.

[0020] Figure 6 for Figure 4 The schematic diagram of the structure of the detection device shown is a schematic diagram of the structure of the second end of the flexible circuit board after the rotating assembly in the detection device drives the second end to rotate relative to the first end.

[0021] Figure 7 for Figure 6 The schematic diagram of the structure of the detection device is shown after the oblique motion component in the detection device moves obliquely upward and drives the second end to twist.

[0022] Figure 8 for Figure 6 The schematic diagram of the structure of the detection device shown is a diagram of the oblique motion component in the detection device moving obliquely downward and causing the second end to twist.

[0023] Main component symbols

[0024]

[0025] DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth to facilitate a full understanding of the present application, and the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this article are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes all and any combination of one or more related listed items.

[0028] In the embodiments of the present application, for the convenience of description and not to limit the present application, the term "connection" used in the patent application specification and claims of the present application is not limited to physical or mechanical connection, whether direct or indirect. "Up", "down", "above", "below", "left", "right", etc. are only used to indicate relative position relationship. When the absolute position of the described object changes, the relative position relationship also changes accordingly.

[0029] The present application embodiment provides a detection device 100, which can be used to detect whether a flexible printed circuit (FPC) provided with a cavity 732 is qualified. Figure 1 The FPC 70 includes a first end 71, a bending area 73 and a second end 75. The bending area 73 is provided with a cavity 732. The bending area 73 is located between the first end 71 and the second end 75. Figure 1 If the adhesive layer around the cavity 732 in the product does not adhere, it is a qualified product. Figure 2 and Figure 3 , Figure 2 and Figure 3 The adhesive layer around the cavity 732' in the FPC 70' shown is partially or completely adhered, which is a defective product.

[0030] See also Figure 4 The detection device 100 includes a base 10, a first fixing assembly 20, a second fixing assembly 30, a rotating assembly 40, an oblique motion assembly 50, and a lens module 60. The first fixing assembly 20 is used to fix the first end 71, the second fixing assembly 30 is used to fix the second end 75, the rotating assembly 40 is used to drive the second fixing assembly 30 to rotate relative to the first fixing assembly 20, so that the FPC 70 can be bent in the bending area 73; the oblique motion assembly 50 is used to drive the second fixing assembly 30 to move obliquely relative to the first fixing assembly 20, so that the flexible circuit board is twisted in the bending area 73.

[0031] The first fixing assembly 20 may include a first bearing seat 21, a pressing piece 23, and a first cylinder 25. The first bearing seat 21 is fixed on the base 10, and the first bearing seat 21 is used to bear the first end 71; the first cylinder 25 is connected to the pressing piece 23, and the first cylinder 25 is used to drive the pressing piece 23 to move relative to the first bearing seat 21. When the first end 71 is placed on the first bearing seat 21, the first cylinder 25 can drive the pressing piece 23 to move toward the first bearing seat 21, and the pressing piece 23 is pressed on the first end 71 to fix the first end 71 together with the first bearing seat 21.

[0032] Please also read Figure 5The first bearing seat 21 is provided with a first through hole 212. The first fixing assembly 20 may further include a vacuum adsorbent 27. The vacuum adsorbent 27 is disposed on the side of the first bearing seat 21 away from the pressing piece 23. The vacuum adsorbent 27 is fixed to the first through hole 212. The first end 71 is placed on the first bearing seat 21 and before the pressing piece 23 is pressed on the first end 71, the first end 71 covers the first through hole 212. The vacuum adsorbent 27 is used to adsorb the first end 71 through the first through hole 212 to prevent the first end 71 from sliding off, and then is pressed on the first end 71 through the pressing piece 23 to fix the first end 71.

[0033] The second fixing assembly 30 is used to fix the second end 75. The second fixing assembly 30 is spaced apart from the first fixing assembly 20 to reserve a space for the bending area 73 to be suspended. The second fixing assembly 30 includes a second bearing seat 31 and a pressing plate 33. The pressing plate 33 can be movably arranged on the second bearing seat 31 through a hinge. A first magnet is fixed on the first bearing seat 21, and a second magnet is arranged on the pressing plate 33. The second magnet can be used to attract the first magnet, so that the second bearing seat 31 and the pressing plate 33 are fixed to each other. The second bearing seat 31 is used to support the second end 75. The second end 75 can be fixed between the second bearing seat 31 and the pressing plate 33.

[0034] The surface of the second bearing seat 31 used to support the second end 75 and the surface of the first bearing seat 21 used to support the first end 71 may be on the same plane.

[0035] The rotating assembly 40 may include a third bearing seat 41, a support member 42, a first gear 43, a second gear 44, a fixing plate 45 and a second cylinder 46. The third bearing seat 41 includes a first bearing portion 412 and a second bearing portion 414, wherein the first bearing portion 412 and the second bearing portion 414 form a third bearing seat 41 that is substantially L-shaped, the support member 42 is fixed to the first bearing portion 412, the first gear 43 is connected to the second cylinder 46, the second cylinder 46 is fixed to one end of the support member 42 away from the first bearing portion 412, and the second cylinder 46 is used to drive the first gear 43 to move relative to the third bearing seat 41. In this embodiment, the first gear 43 is a spur gear, and in other embodiments, the form of the first gear 43 is not limited. The second gear 44 includes a rod portion 441 and a gear portion 443, wherein the gear portion 443 is sleeved on the circumference of the rod portion 441, and the gear portion 443 is meshed with the first gear 43. Both ends of the rod 441 protrude from the gear portion 443, the fixing plate 45 is fixed to one end of the rod 441, and the second bearing seat 31 is fixed to the fixing plate 45. The second cylinder 46 can drive the first gear 43 to move relative to the second gear 44, so that the second gear 44 rotates, thereby driving the second bearing seat 31 to rotate, and further driving the second end 75 to rotate.

[0036] The rotating assembly 40 may further include a limit block 47, which includes a main body 472 and a protruding portion 474. The main body 472 is a hollow disk, and the protruding portion 474 is arranged at a part of the edge area of ​​the main body 472. The main body is sleeved on one end of the rod 441 away from the fixing plate 45 and fixed to the rod 441. A limit groove 4121 is provided on the first bearing portion 412, and part of the main body 472 is accommodated in the limit groove 4121, and the protruding portion 474 is located outside the limit groove 4121. During the rotation of the second gear 44, the limit block 47 rotates synchronously. When the second gear 44 rotates to a certain angle, the protruding portion 474 abuts against the peripheral wall of the limit groove 4121 to prevent the protruding portion 474 from entering the limit groove 4121, so as to limit the rotation angle of the second gear 44. In some embodiments, the maximum rotation angle of the second gear 44 can be 45°-120°.

[0037] The oblique motion assembly 50 may include a fixed member 51, a moving member 53 and a third cylinder 55. The fixed member 51 is fixed on the base 10. The third cylinder 55 is used to drive the moving member 53 to move relative to the fixed member 51, and the moving direction forms an acute angle with the surface of the first bearing seat 21 used to support the first end 71. The moving member 53 is also fixed on the second bearing portion 414. When the moving member 53 moves, it drives the rotating assembly 40 to move as a whole, and drives the rotating assembly 40 to move, so that the second fixed assembly 30 moves, and then the second end 75 fixed on the second fixed assembly 30 moves relative to the first end 71, so that the bending area 73 is twisted.

[0038] The lens module 60 is arranged on the side of the rotating component 40 away from the first fixed component. The rod portion 441 also has a second through hole 4412, which corresponds to the area where the bending area 73 is located, so that the lens module 60 can shoot the bending area 73 through the second through hole 4412.

[0039] The detection device 100 may further include a light source 65 and a lens module 60 located on opposite sides of the FPC 70 and in the same straight line as the bending area 73 , the light source 65 is used to illuminate the bending area 73 , and the lens module 60 is used to photograph the bending area 73 after being illuminated by the light source 65 .

[0040] In order to more clearly illustrate the relationship between the various components in the detection device 100 in this embodiment, the process of the detection device 100 provided in this embodiment detecting whether the FPC 70 is qualified is described in detail below.

[0041] See also Figure 6 , and combined with Figure 4 and Figure 5, place the first end 71 of the FPC 70 on the first bearing seat 21 and cover the first through hole 212; open the vacuum adsorption member 27 to adsorb the first end 71 on the first bearing seat 21; open the first cylinder 25 to drive the pressing member 23 to move toward the first bearing seat 21, thereby fixing the first end 71 on the first bearing seat 21.

[0042] The second end 75 of the FPC 70 is placed on the second bearing seat 31, and the pressing plate 33 is turned over. The pressing plate 33 and the second bearing seat 31 attract each other to fix the second end 75. At this time, the second end 75 and the first end 71 are on the same plane.

[0043] The second cylinder 46 is turned on to move the first gear 43, driving the second gear 44 to rotate 90°, and the fixing plate 45 fixed to the second gear 44 rotates 90° synchronously. Then, the second fixing assembly 30 fixed to the fixing plate 45 rotates 90° synchronously, and the bending area 73 of the FPC 70 is bent, and the second end 75 and the first end 71 are roughly perpendicular to each other.

[0044] See also Figure 7 , open the third cylinder 55, drive the moving member 53 to move along the upper oblique L1 to a certain position, drive the rotating assembly 40 and the second fixed assembly 30 to move along the upper oblique L1 as a whole, the stress in the region where the cavity 732 is provided in the bending area 73 is small, so it is distorted, and the lens module 60 shoots the bent and distorted bending area 73 through the second through hole 4412; please refer to Figure 8 , and then the third cylinder 55 drives the moving member 53 to move to a certain position along the obliquely downward L2, driving the rotating assembly 40 and the second fixed assembly 30 to move along the obliquely downward L2 as a whole, and the area in the bending area 73 where the cavity 732 is provided is twisted again, and the lens module 60 photographs the bent and twisted bending area 73 again through the second through hole 4412. Observing the photos taken twice, the cavity 732 can be photographed, so the FPC 70 does not stick after bending, indicating that the product is qualified.

[0045] The detection device 100 provided in the present application can replace manual detection of whether the FPC 70 is qualified, reduce the probability of misjudgment, and improve work efficiency.

[0046] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A detection device for detecting a cavity in a flexible circuit board, wherein the flexible circuit board comprises a first end, a bending area and a second end connected in sequence, wherein the cavity is located in the bending area, and wherein: include: Pedestal; A first fixing component, fixed on the base, the first fixing component is used to fix the first end; a second fixing component, used to fix the second end, the second fixing component being spaced apart from the first fixing component; a rotating assembly fixed to the second fixing assembly, and configured to rotate the second end relative to the first end so as to bend the bending zone; An oblique motion component, comprising a fixed component and a movable component, wherein the fixed component is fixed to the base, the movable component can move relative to the fixed component, and the movable component is fixed to the rotating component, and is used to drive the second fixed component to move in a direction at an acute angle relative to the first end, so that the bent area after bending is distorted; as well as The lens module corresponds to the position of the cavity in the bending area to photograph the cavity in the bending area after distortion.

2. The detection device according to claim 1, characterized in that: The first fixing assembly includes a first bearing seat, a pressing piece and a first cylinder; the first bearing seat is fixed on the base, and the first bearing seat is used to support the first end; the first cylinder is connected to the pressing piece, and the first cylinder is used to drive the pressing piece to move relative to the first bearing seat, so that the first end can be fixed between the first bearing seat and the pressing piece.

3. The detection device according to claim 2, characterized in that: A first through hole is provided on the first bearing seat, and the first end can cover the first through hole; the first fixing component also includes a vacuum suction component, and before the first end is fixed between the first bearing seat and the pressing member, the vacuum suction component is used to suck the first end through the first through hole.

4. The detection device according to claim 1, characterized in that: The second fixing component is spaced apart from the first fixing component; the second fixing member includes a second bearing seat and a pressing plate, and the second end can be fixed between the second bearing seat and the pressing plate.

5. The detection device according to claim 4, characterized in that: The rotating assembly includes a third supporting seat, a first gear, a second gear and a fixed plate; the first gear is movably arranged on the third supporting seat, the second gear is meshed with the first gear, and the fixed plate is fixed to the second supporting seat; the second gear is used to drive the first gear to rotate, so that the second fixed assembly rotates, and then the second end is bent relative to the first end.

6. The detection device according to claim 5, characterized in that: The rotating assembly also includes a limit block, which includes a main body and a protruding portion, the main body is sleeved on the first gear, and the protruding portion is arranged on a partial edge area of ​​the main body; a limit groove is provided on the third bearing seat, part of the main body is accommodated in the limit groove, and the protruding portion is located outside the limit groove; when the first gear rotates to a certain angle, the protruding portion can be abutted against the peripheral wall of the limit groove to prevent the protruding portion from entering the limit groove.

7. The detection device according to claim 6, characterized in that: The second gear includes a rod portion and a gear portion, the gear portion is sleeved on the circumference of the rod portion, and the gear portion is meshed with the first gear; the limit block and the fixing plate are located on opposite sides of the gear portion and are both fixed on the rod portion.

8. The detection device according to any one of claims 5 to 7, characterized in that: The moving member is fixed to the third bearing seat.

9. The detection device according to claim 7, characterized in that: The rod portion is provided with a second through hole, the lens module is arranged on a side of the second gear away from the first fixing component, and the lens module is used for photographing the bending area through the second through hole.

10. The detection device according to claim 9, characterized in that: The detection device also includes a light source, and the light source and the lens module are arranged on two opposite sides of the first fixing component, and the light source, the second through hole and the lens module are on the same straight line.

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