A coating detection device for circuit board quality inspection

Abstract

The present invention discloses a coating detection device for circuit board quality inspection, which belongs to the technical field of circuit board detection, and includes an adjustable bearing unit and a detection fastening unit. The adjustable bearing unit includes two detection bearing seats arranged opposite to each other, and the two adjacent detection bearing seats are connected by an adjustable turning piece, and the ends of the detection bearing seats are connected to static elimination pads through limiting slides; the detection fastening unit includes fastening sliding seats arranged on both sides of the detection bearing seats, and the fastening sliding seats are connected to a regulating shaft through a slide groove limiting piece, and a triangular exchange disk is arranged at the end of the regulating shaft. The present invention is designed for the detection of gold finger coating on flexible circuit boards, and the flexible circuit board is fastened near the gold finger detection part by the detection fastening units arranged at both ends of the detection bearing seats, so as to ensure the bearing connection between the detection bearing seat and the flexible circuit board, facilitate the precise adjustment of the flexible circuit board during the appearance detection process, and facilitate the detection.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board detection, and in particular to a coating detection device for circuit board quality inspection. Background Art

[0002] The material of flexible circuit board is polymer material, which is made of polyimide or polyester film as the base material. It has the characteristics of high wiring density, light weight, thin thickness and good bending. The emergence of flexible circuit board greatly facilitates the design of circuit installation;

[0003] In order to ensure the connection between the flexible circuit board and the components, gold finger coatings are provided at both ends of the flexible circuit board. When there are defects in the gold finger coatings, the signal quality of the flexible circuit board will be seriously affected. Therefore, random inspection of the gold finger coatings is an indispensable part of production. The existing method mainly places the sample under a microscope or a magnifying glass to observe whether there are scratches, depressions and erosion on the surface. Due to the flexible characteristics of the flexible circuit board, when adjusting the gold fingers, when adjusting through the flexible circuit board, the flexible circuit board will be deformed, and the operating force cannot be effectively transmitted, and the position of the gold fingers at the end cannot be accurately adjusted. This makes it necessary to operate by holding the gold finger part. The gold fingers are thin and inconvenient to pick up and adjust, and there is a situation where the gold fingers are contaminated and affect the subsequent observation. Based on this, a coating detection equipment for circuit board quality inspection is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when adjusting the gold finger through the flexible circuit board, the flexible circuit board will be deformed, the operating force cannot be effectively transmitted, and the position of the end gold finger cannot be accurately adjusted, which makes it necessary to operate by holding the gold finger part. The gold finger is thin and inconvenient to pick up and adjust, and there is a problem of contaminating the gold finger and affecting subsequent observation. A coating detection device for circuit board quality inspection is proposed to solve the problem that

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A coating detection device for circuit board quality inspection, comprising an adjustable bearing unit and a detection fastening unit, wherein the adjustable bearing unit comprises two detection bearing seats arranged opposite to each other, two adjacent detection bearing seats are connected by an adjustable turning piece, and the ends of the detection bearing seats are connected to a static elimination pad by a limit sliding column;

[0007] The detection fastening unit includes a fastening sliding seat arranged on both sides of the detection bearing seat, the fastening sliding seat is connected to a regulating shaft through a slide groove limiter, a triangular exchange disk is arranged at the end of the regulating shaft, three sleeve inner shafts are arranged between the two triangular exchange disks, and the outer side wall of the sleeve inner shaft is provided with a rubber fastening cylinder for fastening and limiting the flexible circuit board, a cleaning cotton cylinder for wiping the gold finger, and a signal detection cylinder for testing the gold finger.

[0008] Preferably, the adjustable turning member includes two lateral adjustment rods arranged opposite to each other, the lateral adjustment rods are connected by a sliding limiter, the lateral adjustment rod is connected to the turning rod through a primary rotating connection, and the end of the turning rod is connected to the side wall of the detection bearing seat through a secondary rotating connection.

[0009] Preferably, the sliding limiter comprises a sliding connection opening provided on the side wall opposite to the transverse adjustment rod, and the side wall of the transverse adjustment rod is fixedly connected with the transverse limiter located in the sliding connection opening.

[0010] Preferably, a telescopic opening is provided at the end of the detection bearing seat, the limiting sliding post is fixedly arranged in the telescopic opening, and a sliding opening adapted to the limiting sliding post is provided on the static elimination pad.

[0011] Preferably, the slide groove limiting member comprises an adjustment slide groove provided on the fastening sliding seat, a through lock opening is provided on the top of the adjustment slide groove, and a limited locking member is provided in the through lock opening;

[0012] The adjusting slide groove is composed of a horizontally arranged moving slide groove and an inclinedly arranged fastening slide groove.

[0013] Preferably, the limit locking member comprises a pressing plate connected to the fastening sliding seat via a connecting shaft, the pressing plate is connected to the fastening sliding seat via a snap fitting, and a bevel tooth plate is provided on the pressing plate;

[0014] The regulating shaft is provided with an adapting annular tooth groove adapted to the bevel tooth plate.

[0015] Preferably, the signal detection tube is fixedly connected to the sleeve inner shaft, and an elastic metal pin adapted to the gold finger is provided on the signal detection tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is designed for the detection of gold finger plating on flexible circuit boards. The detection fastening units arranged at both ends of the detection bearing seat are used to fasten the flexible circuit board near the gold finger detection position, thereby ensuring the bearing connection between the detection bearing seat and the flexible circuit board, facilitating the precise adjustment of the flexible circuit board during the appearance detection process and facilitating the detection.

[0018] 2. The present invention is provided with a detection bearing seat which is freely combined and connected by adjustable turning parts according to the different specifications of different flexible circuit boards, which is suitable for the installation of flexible circuit boards of different specifications. While fastening the flexible circuit boards, the cleaning cotton tube arranged on the triangular exchange plate is used to realize automatic wiping of the surface of the gold finger, which is convenient for observing the surface defects of the gold finger at a later time.

[0019] 3. The present invention detects the triangular exchange plate provided on the fastening unit. After the appearance inspection of the gold fingers of the flexible circuit board, the elastic metal pins provided on the signal detection tube can contact the gold fingers at both ends of the flexible circuit board on the detection support seat, thereby realizing the conduction test inspection of the flexible circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a coating detection device for circuit board quality inspection proposed by the present invention;

[0021] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the partial structural assembly of a coating detection device for circuit board quality inspection proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the assembly structure of a triangular exchange plate in a coating detection device for circuit board quality inspection proposed by the present invention;

[0024] Figure 5 The present invention provides a schematic structural diagram of an adjustable turning member in a coating detection device for circuit board quality inspection.

[0025] In the figure: 1. Detection bearing seat; 2. Limit sliding column; 3. Static elimination pad; 4. Fastening sliding seat; 5. Adjustment shaft; 6. Triangular exchange plate; 7. Sleeve inner shaft; 8. Rubber fastening cylinder; 9. Cleaning cotton cylinder; 10. Signal detection cylinder; 11. Horizontal adjustment rod; 12. Turning rod; 13. Secondary rotating connection; 14. Sliding connection port; 15. Horizontal limiter; 16. Telescopic port; 17. Adjustment slide groove; 18. Through lock port; 19. Press plate; 20. Buckle; 21. Bevel tooth plate; 22. Adaptive annular tooth groove; 23. Elastic metal pin. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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.

[0029] Example, see Figures 1 to 5 A coating detection device for circuit board quality inspection includes an adjustable bearing unit and a detection fastening unit. The adjustable bearing unit includes two detection bearing seats 1 arranged opposite to each other. The two adjacent detection bearing seats 1 are connected by an adjustable turning piece. The ends of the detection bearing seats 1 are connected to a static elimination pad 3 through a limit sliding column 2.

[0030] A telescopic opening 16 is provided at the end of the detection support seat 1, and the limiting slide 2 is fixedly arranged in the telescopic opening 16. A sliding opening adapted to the limiting slide 2 is provided on the static elimination pad 3. The static elimination pad 3 can be stored in the telescopic opening 16 during detection, and can also be extended outward, thereby facilitating the detection.

[0031] Among them, the static elimination pad 3 is made of metal material, which is grounded by a wire and can achieve static elimination of the gold finger coating on the flexible circuit board, which is beneficial to dust removal of the gold finger and convenient for observing the state of the gold finger with a microscope or a magnifying glass.

[0032] The adjustable turning member includes two lateral adjustment rods 11 arranged opposite to each other, which are connected by a sliding limiter. The lateral adjustment rod 11 is connected to a turning rod 12 through a primary rotating connection. The end of the turning rod 12 is connected to the side wall of the detection support seat 1 through a secondary rotating connection 13.

[0033] The turning rod 12 can be arranged in multiple numbers according to the size of the flexible circuit board of different specifications, and its effect is that the level distance between the two relatively arranged detection bearing seats 1 can be changed, so as to adapt to the flexible circuit boards of different lengths;

[0034] The sliding limiter includes a sliding connection port 14 opened on the side wall opposite to the lateral adjustment rod 11, and the side wall of the lateral adjustment rod 11 is fixedly connected with a lateral limiter 15 located in the sliding connection port 14. The lateral limiter 15 is in the sliding connection port 14 and slides, which can change the positional relationship between the two relatively arranged lateral adjustment rods 11, thereby ensuring the corresponding detection of the gold finger plating at both ends of the flexible circuit board by the detection support seat 1.

[0035] By adopting the setting of adjustable turning parts, when testing the flexible circuit board, the gold finger coatings at both ends of the flexible circuit board are respectively installed on the static elimination pads 3 at both ends of the two detection bearing seats 1. The distances between the two ends of flexible circuit boards of different specifications and sizes are different, and according to different installation conditions, the two ends of the flexible circuit board are often staggered at a certain distance. The use of adjustable turning parts can realize the change of the distance and position relationship between the two detection bearing seats 1, thereby meeting the bearing use of flexible circuit boards of different shapes and specifications.

[0036] The detection fastening unit includes a fastening sliding seat 4 arranged on both sides of the detection bearing seat 1, and the fastening sliding seat 4 is connected to the regulating shaft 5 through a slide groove limiter. The end of the regulating shaft 5 is provided with a knob to facilitate the rotation and adjustment of the triangular exchange disk 6, thereby changing the position relationship of the three sleeve inner shafts 7, and realizing the replacement of the positions of the rubber fastening cylinder 8, the cleaning cotton cylinder 9 and the signal detection cylinder 10 at different stages;

[0037] A triangular exchange disk 6 is arranged at the end of the regulating shaft 5, three sleeve inner shafts 7 are arranged between the two triangular exchange disks 6, and the outer wall of the sleeve inner shaft 7 is provided with a rubber fastening cylinder 8 for fastening and limiting the flexible circuit board, a cleaning cotton cylinder 9 for wiping the gold finger and a signal detection cylinder 10 for testing the gold finger.

[0038] The signal detection tube 10 is fixedly connected to the sleeve inner shaft 7. The signal detection tube 10 is provided with an elastic metal pin 23 adapted to the gold finger. The elastic metal pin 23 is adapted to the size of the gold finger and is externally connected to a detection computer for detecting the signal connection status between the gold finger and the flexible circuit board.

[0039] The slide groove limiting member includes an adjusting slide groove 17 provided on the fastening sliding seat 4. The adjusting slide groove 17 is composed of a horizontally arranged moving slide groove and an inclinedly arranged fastening slide groove.

[0040] A through lock opening 18 is provided at the top of the adjustment slide groove 17, and a limited position locking member is arranged in the through lock opening 18; the limited position locking member comprises a pressing plate 19 connected to the fastening sliding seat 4 through a connecting shaft, the pressing plate 19 is connected to the fastening sliding seat 4 through a snap fitting 20, and a bevel tooth plate 21 is provided on the pressing plate 19;

[0041] The setting of the limit locking member allows, when it is necessary to release the regulating shaft 5 in the inclined fastening groove, it is only necessary to release it through the snap member 20, rotate the pressing plate 19 to move the inclined tooth plate 21 upward, and disengage it from the contact with the matching annular tooth groove 22 on the regulating shaft 5.

[0042] The buckle 20 is an existing buckle connection structure, and a slot matching the buckle 20 is provided on the fastening sliding seat 4 to fix the pressing plate 19;

[0043] An adapting annular tooth groove 22 adapted to the bevel tooth plate 21 is provided on the regulating shaft 5. The adapting annular tooth groove 22 is an oblique groove setting and adapted to the bevel tooth plate 21. Under this effect, when the regulating shaft 5 moves into the fastening slide groove, it can only move downward continuously and cannot move upward.

[0044] The bevel tooth plate 21 is located at an inclined fastening groove. When the regulating shaft 5 moves to the fastening groove, it moves downward step by step, thereby gradually driving the rubber fastening tube 8 to move downward to contact the flexible circuit board, and effectively fasten the flexible circuit board close to the gold finger, so that the position of the gold finger fastened thereon can be adjusted conveniently by adjusting the detection bearing seat 1, and the situation of difficult operation caused by the flexible material will not occur.

[0045] Working principle:

[0046] Before testing the flexible circuit board, the present invention places the flexible circuit board on the testing bearing seat 1, and adjusts the position and spacing between the two testing bearing seats 1 by means of an adjustable turning piece arranged between the testing bearing seats 1, so as to ensure that the two ends of the flexible circuit board are just at the static elimination pad 3 arranged on the testing bearing seat 1;

[0047] Close the inclined tooth plate 21 in advance so that it is in the adjustment slot 17. At this time, the control shaft 5 drives the triangular exchange disk 6 connected thereto to move in the adjustment slot 17. When the control shaft 5 slides in the moving slot, the cleaning cotton cylinder 9 arranged on the triangular exchange disk 6 will contact the gold finger part on the flexible circuit board during the movement and wipe the gold finger. When the control shaft 5 moves from the moving slot to the fastening slot, the triangular exchange disk 6 on it will gradually move downward, so that the innermost rubber fastening cylinder 8 will contact the flexible circuit board, squeeze the flexible circuit board, and limit the flexible circuit board, so as to realize fixing the two ends of the flexible circuit board on the detection bearing seat 1, completing the loading process of the flexible circuit board, and facilitating the subsequent detection and observation of the gold finger plating of the flexible circuit board;

[0048] When completing the appearance inspection under the action of a microscope or a magnifying glass, by releasing the fastener 20 and rotating the pressing plate 19, the bevel tooth plate 21 is disengaged from the matching annular tooth groove 22 on the regulating shaft 5, and the limit on the regulating shaft 5 is released, so that the regulating shaft 5 can move in the fastening slide groove. At this time, by rotating the regulating shaft 5, the triangular exchange disk 6 is rotated to rotate the signal detection tube 10 originally at the top to the bottom, and the elastic metal pin 23 on it is brought into contact with the gold finger of the flexible circuit board, so as to realize the signal connection and effectively detect the conductive performance of the flexible circuit board and the gold finger.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coating detection device for circuit board quality inspection, comprising an adjustable bearing unit and a detection fastening unit, characterized in that: The adjustable bearing unit comprises two detection bearing seats (1) arranged opposite to each other, the two adjacent detection bearing seats (1) being connected via an adjustable turning piece, and the ends of the detection bearing seats (1) being connected to static elimination pads (3) via limiting sliding columns (2); The detection fastening unit comprises a fastening sliding seat (4) arranged on both sides of the detection bearing seat (1); the fastening sliding seat (4) is connected to a regulating shaft (5) via a slide groove limiter; a triangular exchange disk (6) is arranged at the end of the regulating shaft (5); three sleeve inner shafts (7) are arranged between two of the triangular exchange disks (6); and the outer side wall of the sleeve inner shaft (7) is provided with a rubber fastening cylinder (8) for fastening and limiting the flexible circuit board, a cleaning cotton cylinder (9) for wiping the gold finger, and a signal detection cylinder (10) for testing the gold finger; The slide groove limiting member comprises an adjustment slide groove (17) provided on the fastening slide seat (4), a through lock opening (18) being provided at the top of the adjustment slide groove (17), and a limiting locking member being provided in the through lock opening (18); The adjusting slide groove (17) is composed of a horizontally arranged moving slide groove and an inclinedly arranged fastening slide groove; The limit locking member comprises a pressing plate (19) connected to the fastening sliding seat (4) via a connecting shaft, the pressing plate (19) being connected to the fastening sliding seat (4) via a snap fitting (20), and a bevel tooth plate (21) being provided on the pressing plate (19); The regulating shaft (5) is provided with an adapting annular tooth groove (22) adapted to the bevel tooth plate (21).

2. A circuit board coating inspection device according to claim 1, characterized in that: The adjustable turning member comprises two lateral adjustment rods (11) arranged opposite to each other, the lateral adjustment rods (11) being connected via a sliding stopper, the lateral adjustment rod (11) being connected to a turning rod (12) via a primary rotating connection member, and the end of the turning rod (12) being connected to a side wall of the detection bearing seat (1) via a secondary rotating connection member (13).

3. A circuit board coating inspection device according to claim 2, characterized in that: The sliding stopper comprises a sliding connection opening (14) formed on a side wall opposite to the transverse adjustment rod (11), and the side wall of the transverse adjustment rod (11) is fixedly connected with a transverse stopper (15) located in the sliding connection opening (14).

4. A circuit board coating inspection device according to claim 1, characterized in that: The end of the detection bearing seat (1) is provided with a telescopic opening (16), the limiting sliding column (2) is fixedly arranged in the telescopic opening (16), and the static elimination pad (3) is provided with a sliding opening matched with the limiting sliding column (2).

5. The circuit board coating inspection device according to claim 1, characterized in that: The signal detection tube (10) is fixedly connected to the sleeve inner shaft (7), and an elastic metal pin (23) adapted to the gold finger is provided on the signal detection tube (10).

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