FPC (Flexible Printed Circuit) separation detection equipment and separation detection method

Abstract

The invention discloses FPC soft board separation detection equipment and a separation detection method, and relates to the technical field of FPC soft board detection, and the FPC soft board separation detection equipment comprises an arch pushing mechanism which comprises a first clamping jig, a second clamping jig and a first moving module, the first clamping jig and the second clamping jig are used for clamping the two ends of a multi-layer FPC soft board, and the first moving module is used for moving the multi-layer FPC soft board; a detection area of the multi-layer FPC soft board is formed between the first clamping jig and the second clamping jig; the adsorption separation mechanism comprises a third moving module, the third moving module is connected with a first adsorption piece, and the third moving module is used for driving the first adsorption piece to get close to the detection area and adsorb the surface layer FPC soft board; the shooting detector is used for carrying out shooting detection on the separation state of the multi-layer FPC soft board in the detection area, the separation state can be detected after each layer of the separation part of the multi-layer FPC soft board is separated, and the shooting detector carries out identification detection rapidly by utilizing a visual algorithm when shooting an image; therefore, the detection precision, the detection accuracy and the detection efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of FPC soft board detection, and in particular to an FPC soft board separation detection device and a separation detection method. Background Art

[0002] FPC circuit board refers to a circuit board made of flexible materials as the base material. This circuit board can be bent, folded or even twisted freely without affecting its electrical performance. Multilayer FPC is a more complex technology developed on the basis of single-layer or multi-layer rigid boards. It forms an integral structure by stacking and connecting multiple layers of flexible circuit boards in a specific way. The advantage of this is that it can increase the density and complexity of the circuit board while maintaining the advantages of flexible boards.

[0003] In most designs, the layers of the multi-layer FPC circuit board are bonded together, but in some specific application areas, in order to meet specific functional requirements, a multi-layer FPC circuit board with a partially separated state will be designed to meet market demand.

[0004] After the multi-layer FPC circuit board in the separated state is produced, the separation area needs to be separated and tested to improve product quality and prevent the unseparated product from flowing out. However, the detection of the separation area of ​​the multi-layer FPC circuit board is usually carried out by observing the separation area through a microscope or other equipment with image magnification function to judge the separation status of the multi-layer FPC circuit board. However, since the spacing between the FPC circuit boards of each layer is very small, some areas are even in contact with each other. Therefore, relying solely on image magnification equipment for detection will result in poor accuracy and inaccurate detection.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Summary of the invention

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] To achieve the above object, the present invention provides the following technical solution: an FPC soft board separation detection device, comprising: The arch pushing mechanism includes a first clamping fixture, a second clamping fixture and a first moving module, wherein the first clamping fixture and the second clamping fixture are used to clamp both ends of the multi-layer FPC soft board, so that a detection area of ​​the multi-layer FPC soft board is formed between the first clamping fixture and the second clamping fixture, and the first moving module is used to drive the first clamping fixture to move toward the second clamping fixture, so that the multi-layer FPC soft board in the detection area forms an arch shape; The adsorption and separation mechanism includes a third movable module, the third movable module is connected to the first adsorption member, the third movable module is used to drive the first adsorption member to approach the detection area and adsorb the surface FPC soft board of the multi-layer FPC soft board, and then move away from the detection area to separate the surface FPC soft board of the multi-layer FPC soft board; The photographing detector is used to photograph and detect the separation state of the multi-layer FPC soft board in the detection area after separation.

[0008] As a further solution of the present invention: the pushing and arching mechanism also includes a second movable module for driving the second clamping jig to move in the direction of the first clamping jig, and the first movable module and the second movable module respectively drive the first clamping jig and the second clamping jig, so that the first clamping jig and the second clamping jig can be close to or away from each other.

[0009] As a further solution of the present invention: the adsorption and separation mechanism also includes a fourth movable module and a second adsorption component which are arranged opposite to the third movable module and the first adsorption component. The third movable module and the fourth movable module can respectively drive the first adsorption component and the second adsorption component to approach the detection area to adsorb the surface FPC soft boards on opposite sides of the multi-layer FPC soft board.

[0010] As a further solution of the present invention: the multi-layer FPC soft board in the detection area is in a straight state, the third moving module drives the first adsorption member to first contact and absorb one side of the multi-layer FPC soft board in the detection area, or the fourth moving module drives the second adsorption member to first contact and absorb the other side of the multi-layer FPC soft board in the detection area; In the process that the first movable module and the second movable module respectively drive the first clamping fixture and the second clamping fixture to approach each other, the third movable module drives the first adsorption component to move away from the detection area, or the fourth movable module drives the second adsorption component to move away from the detection area, so as to control the arching direction of the multilayer FPC soft board in the detection area.

[0011] As a further solution of the present invention: the first adsorption member and the second adsorption member both include a nozzle rod and a nozzle; Wherein, the suction nozzle rod is a retractable suction nozzle rod.

[0012] As a further solution of the present invention: the first clamping fixture comprises a first fixture plate and a first flip cover foldably connected to the first fixture plate via a rotating connection structure; The second clamping fixture comprises a second fixture plate and a second flip cover foldably connected to the second fixture plate via a rotating connection structure.

[0013] As a further solution of the present invention: the first fixture plate and the second fixture plate are both provided with a plurality of positioning PINs, the first flip cover and the second flip cover are both provided with clearance holes corresponding to the plurality of positioning PINs, and the plurality of positioning PINs are arranged along the edge of the multi-layer FPC soft board.

[0014] As a further solution of the present invention: soft rubber strips are arranged at the ends of the first flip cover and the second flip cover contacting the multi-layer FPC soft board when the first flip cover and the second flip cover are closed.

[0015] As a further solution of the present invention: a material shortage sensor and a cover flipping sensor are arranged on the first fixture plate at a side away from the first cover, and the first fixture plate has perforations corresponding to the material shortage sensor and the cover flipping sensor; The material shortage sensor is located in the overlapping area between the first flip cover and the multi-layer FPC soft board, and the flip cover sensor is located in the area outside the overlapping area between the first flip cover and the multi-layer FPC soft board.

[0016] The present invention provides the following technical solution: a separation detection method, which is applied to the above-mentioned FPC soft board separation detection equipment to detect the separated multi-layer FPC soft board, and the method includes: The reference is created by template matching of the fixed feature positions of the first clamping fixture and the second clamping fixture. After the algorithm finds the template, the matching position is used to generate reference point position 1 corresponding to the fixed feature position of the first clamping fixture and reference point position 2 corresponding to the fixed feature position of the second clamping fixture. According to the reference point 1, a distance offset is performed at a certain distance from the fixed feature position of the first clamping fixture, and then the root search area 1 is generated through algorithm matching. According to the reference point 2, a distance offset is performed at a certain distance from the fixed feature position of the second clamping fixture, and then the root search area 4 is generated through algorithm matching. After finding the area 1 and the area 4, the thickness of the FPC soft board is measured using the edge pair, and only the width of the first pair of edge pairs is found. By setting the upper and lower limit tolerances of the thickness of the FPC soft board, it is determined whether the multi-layer FPC soft boards are adhered; According to the reference point 1 and the reference point 2, positioning and matching are performed, and the arc angle is searched in a straight line. According to the real-time angle of the arc, the edge pair measurement areas 2 and 3 with the same angle are generated. The measurement area can be moved or increased according to the actual working conditions. The edge pair width measurement algorithm is used to output the FPC soft board thickness of areas 2 and 3. The upper and lower limit tolerances of the FPC soft board thickness are set to determine whether the multi-layer FPC soft boards are adhered to each other. Among them, the product thickness measured in area 1, area 2, area 3 and area 4 is the thickness of a single-layer FPC, which is judged as separation OK, and the product thickness measured is the thickness of two-layer FPC and three-layer FPC, which is greater than the thickness of a single-layer FPC, which is judged as NG.

[0017] Compared with the prior art, the beneficial effects of this technical solution are: First, the two ends of the multi-layer FPC soft board are fixed by the first clamping fixture and the second clamping fixture, and the first clamping fixture is driven to the second clamping fixture by the first moving module to form an arch shape naturally at the separated part of the multi-layer FPC soft board, and then the first adsorption member is used to absorb the surface FPC soft board of the inner concave surface of the arch shape by the third moving module, and then the first adsorption member is used to pull the surface FPC soft board of the separated part of the multi-layer FPC soft board by the third moving module, and finally the separated part of the multi-layer FPC soft board is photographed and detected by the shooting detector; By adding a second movable module, a fourth movable module and a second adsorbent, the separated part of the multi-layer FPC soft board is tested twice, that is, the separated part is tested to form a downward arch shape in the first test, and the upper layer of the separated part is sucked by the first adsorbent to be pulled upward to separate it from the middle layer, and then the shooting detector is used to detect whether the number of layers pulled upward is one layer or two layers; there are two results when sucking upward: the first one: if it is a single-layer board facing upward, the detection is OK; the second one: if it is a two-layer board facing upward or any situation where the middle is not separated, it is NG; the second one forms the separated part into a downward arch shape, and the lower layer of the separated part is sucked by the second adsorbent to be pulled downward to separate it from the middle layer, and then the shooting detector 6 detects whether the number of layers pulled downward is one layer or two layers; there are two results when sucking downward: the first one: if it is a single-layer board facing downward, the detection is OK; the second one: if it is a two-layer board facing downward or any situation where the middle is not separated, it is NG; Therefore, the separation status of the upper layer and the middle layer, and the lower layer and the middle layer of the separated part of the multi-layer FPC soft board can be detected respectively according to the two tests, thereby realizing the separation detection of the three-layer product. In the detection of the multi-layer FPC soft board, the layers of the separated part of the multi-layer FPC soft board can be separated and then the separation status can be detected, thereby improving the detection accuracy, detection precision and detection efficiency; When the multilayer FPC soft board in the detection area is in a straight state, the third moving module drives the first adsorption member to first contact and absorb one side of the separation part, or the fourth moving module drives the second adsorption member to first contact and absorb the other side of the separation part; the first moving module and the second moving module respectively drive the first clamping fixture and the second clamping fixture to approach each other to push the separation part, and at the same time, the third moving module synchronously drives the first adsorption member to move in a direction away from the detection area to apply a pulling force to the separation part, or the fourth moving module synchronously drives the second adsorption member to move in a direction away from the detection area to apply a pulling force to the separation part, and the arching direction of the multilayer FPC soft board in the detection area is controlled, so that in the two separation tests, the separation part is controlled to form an arch shape in opposite directions respectively; At the same time, the visual algorithm performs distance offset between the first reference point on the first clamping fixture and the second reference point on the second clamping fixture to match and generate area one, area two, area three and area four. During the two separation inspections of the multi-layer FPC soft board, the edge pair measurement algorithm is used to measure the thickness of the middle FPC soft board in area one, area two, area three and area four. Finally, according to the set upper and lower limit tolerances of the soft board thickness, it is judged whether the upper and middle layers, and the lower and middle layers of the multi-layer FPC soft board are completely separated.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a schematic structural diagram of a first mobile module and a second mobile module of the present invention; Figure 3 is a schematic structural diagram of the third mobile module and the fourth mobile module of the present invention; Figure 4 It is a schematic diagram of the structure of the first clamping fixture and the second clamping fixture of the present invention; Figure 5 It is a schematic diagram of the measurement reference positioning principle of the present invention; Figure 6 It is a schematic diagram of the upper layer and middle layer separation measurement principle of the present invention; Figure 7 It is a schematic diagram of the lower layer and middle layer separation measurement principle of the present invention; Figure 8 It is a schematic diagram of a detection OK product of the present invention; Fig. 9 is a schematic diagram of a NG detection product of the present invention; Fig.10 is a schematic diagram of a NG detection product of the present invention; Fig.11 is a schematic diagram of a NG detection product of the present invention; The corresponding reference numerals in the accompanying drawings are described as follows: 1. First mobile module; 2. First clamping fixture; 201. First fixture plate; 202. First flip cover; 3. Second clamping fixture; 301. Second fixture plate; 302. Second flip cover; 4. Third mobile module; 5. First adsorption member; 6. Photo detector; 7. Second mobile module; 8. Fourth mobile module; 9. Second adsorption member; 10. Suction nozzle rod; 11. Suction nozzle; 12. Positioning PIN; 13. Out-of-material sensor; 14. Flip cover sensor; 15. Soft rubber strip; 16. Barcode scanner. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-4 , an FPC soft board separation detection device, comprising: Embodiment 1: The push-arch mechanism includes a first clamping fixture 2, a second clamping fixture 3 and a first moving module 1, wherein the first clamping fixture 2 and the second clamping fixture 3 are used to clamp both ends of the multi-layer FPC soft board, so that a detection area of ​​the multi-layer FPC soft board is formed between the first clamping fixture 2 and the second clamping fixture 3, and the first moving module 1 is used to drive the first clamping fixture 2 to move toward the second clamping fixture 3, so that the multi-layer FPC soft board in the detection area forms an arch shape; The adsorption and separation mechanism includes a third movable module 4, the third movable module 4 is connected to a first adsorption member 5, the third movable module 4 is used to drive the first adsorption member 5 to approach the detection area and adsorb the surface FPC soft board of the multi-layer FPC soft board, and then move away from the detection area to separate the surface FPC soft board of the multi-layer FPC soft board, wherein, in order to improve the stability of adsorption, the first adsorption member 5 is preferably configured to adsorb the surface FPC soft board at an angle perpendicular to the separation portion of the multi-layer FPC soft board; The photographing detector 6 is used to photograph and detect the separation state of the separated part of the multi-layer FPC soft board in the detection area after separation.

[0023] In an embodiment of the present scheme, an operator places both ends of a multi-layer FPC soft board on a first clamping fixture 2 and a second clamping fixture 3, so that a separated portion of the multi-layer FPC soft board (hereinafter referred to as the "separated portion") is in a detection area between the first clamping fixture 2 and the second clamping fixture 3, and drives the first clamping fixture 2 to move toward the second clamping fixture 3 through the first moving module 1, so that the separated portion naturally forms an arch shape in the detection area, and then drives the first adsorption member 5 to approach the detection area and adsorb the surface FPC soft board of the separated portion through the third moving module 4. After the first adsorption member 5 adsorbs the surface FPC soft board, the third moving module 4 drives the first adsorption member 5 to move away from the detection area, so that the surface FPC soft board is pulled to form a separated state with the separated portion, and then the separated state of the separated portion is photographed and detected by the shooting detector 6, so that in the detection of the multi-layer FPC soft board, the surface FPC soft board of the separated portion can be separated and then the separated state can be detected, thereby improving the detection precision, detection accuracy and detection efficiency; Among them, Figure 1 As shown, in order to make the captured image clearer, the shooting detector 6 preferably uses a CCD camera with a high-definition telecentric lens. The shooting detector 6 is preferably installed vertically toward the side of the separation part, that is, the effect presented by the captured image is the separation state between the layers of the separation part. At the same time, the shooting detector 6 is also connected to a display device for external signal transmission. The shooting detector 6 transmits the captured image and the detection result to the display device for display, which is convenient for the operator to view. In addition, a backlight source opposite to the shooting detector 6 is installed at the other end of the multi-layer FPC soft board. The backlight source can provide uniform background lighting, so that the contrast between the layers of the separation part is enhanced, it is easier to observe subtle stratification, and the shadows caused by uneven or curved surfaces are reduced, so that the image of the detection area is clearer, thereby making the measurement more accurate. At the same time, a lifting cylinder for adjusting the height of the backlight source is installed to adjust the height of the backlight source so that the backlight source is aligned with the shooting detector 6. Among them, when the separation part forms an arch shape, it respectively has an arched surface and a concave surface. The first adsorption component 5 preferably adsorbs the surface FPC soft board of the concave surface of the separation part. When the separation part is arched, there is an arched stress, and the surface FPC soft board at the arched end can no longer be pulled again. Forced pulling is likely to cause tearing damage to the FPC soft board. At this time, the first adsorption component 5 adsorbs the surface FPC soft board of the concave surface of the separation part, and can pull the upward arched surface FPC soft board in the opposite direction of the arch, thereby changing the arch direction of the surface FPC soft board, which can not only improve the separation effect of the separation part, but also avoid damaging the product when pulling.

[0024] Embodiment 2: The push-arch mechanism also includes a second movable module 7 for driving the second clamping fixture 3 to move toward the first clamping fixture 2. The first movable module 1 and the second movable module 7 respectively drive the first clamping fixture 2 and the second clamping fixture 3, so that the first clamping fixture 2 and the second clamping fixture 3 can be close to or away from each other.

[0025] In the embodiment of the present scheme, when the first moving module 1 drives the first clamping fixture 2 to move toward the second clamping fixture 3, due to the unidirectional movement, it is easy to cause stress offset when the separated part forms an arch shape, and the two ends cannot be stressed at the same time, resulting in the risk of damage to the connection between the separated part and other parts of the multi-layer FPC soft board; By adding the second movable module 7, the second clamping fixture 3 is driven to move toward the first clamping fixture 2, so that through the mutual cooperation of the first movable module 1 and the second movable module 7, the first clamping fixture 2 and the second clamping fixture 3 can be synchronously moved close to each other to avoid damage to the connection between the separated part and other parts of the multi-layer FPC soft board.

[0026] Embodiment 3: In order to cope with the adsorption and separation detection of three-layer multi-layer FPC soft boards, the adsorption and separation mechanism also includes a fourth movable module 8 and a second adsorption component 9 which are arranged opposite to the third movable module 4 and the first adsorption component 5. The third movable module 4 and the fourth movable module 8 can respectively drive the first adsorption component 5 and the second adsorption component 9 to approach the detection area to adsorb the surface FPC soft boards on opposite sides of the separated part of the multi-layer FPC soft boards.

[0027] In the specific implementation, the separated part of the multi-layer FPC soft board is tested twice. When the first test is performed, the first clamping fixture 2 and the second clamping fixture 3 are also used to clamp the two ends of the multi-layer FPC soft board. The first moving module 1 and the second moving module 7 respectively drive the first clamping fixture 2 and the second clamping fixture 3 to approach each other, so that the separated part forms a downward arch shape. At this time, the fourth moving module 8 drives the second adsorbent 9 to suck the arched surface of the separated part and fix it, and the third moving module 4 drives the first adsorbent 5 to separate the surface of the inner concave surface of the part. The first adsorption member 5 is then driven by the third moving module 4 to move away from the detection area to pull the upper FPC board and separate it from the separation part, and the shooting detector 6 detects whether the number of layers pulled upward is one or two; there are two detection results when the upper FPC board is sucked and pulled upward: the first one: if there is one layer of FPC board facing upward, the detection is OK; the second one: if there are two layers of FPC boards facing upward or the separation part is not separated in the middle, the detection is NG; When performing the second detection, the first adsorption member 5 and the second adsorption member 9 are respectively returned to their original positions through the third mobile module 4 and the fourth mobile module 8, and the first clamping fixture 2 and the second clamping fixture 3 are respectively driven to move away from each other through the first mobile module 1 and the second mobile module 7, so that the separated part is straightened again, and then the first clamping fixture 2 and the second clamping fixture 3 are respectively driven to move closer to each other through the first mobile module 1 and the second mobile module 7, so that the separated part forms an upwardly arched arch shape. At this time, the upper end surface of the separated part is an arched surface, and the lower end surface is an inner concave surface. The first adsorption member 5 sucks the arched surface of the separation part and fixes it, then the second suction member 9 approaches and sucks the surface FPC soft board of the inner concave surface of the separation part (i.e. the lower FPC soft board of the separation part) and pulls it downwards to pull the lower FPC soft board away from the separation part, and the shooting detector 6 detects whether the number of layers pulled downwards is one or two; sucking the lower FPC soft board and pulling it downwards will result in two detection results: the first: if there is one layer of FPC soft board facing downwards, the detection is OK; the second: if there are two layers of FPC soft boards facing downwards or the separation part is not separated in the middle, it is NG; Therefore, the separation states of the upper layer FPC soft board and the middle layer FPC soft board, and the lower layer FPC soft board and the middle layer FPC soft board of the separated part of the multi-layer FPC soft board are detected respectively according to the two detections, thereby realizing the separation detection of the three-layer FPC soft board.

[0028] In the embodiment of the present scheme, preferably, before the first movable module 1 and the second movable module 7 respectively drive the first clamping fixture 2 and the second clamping fixture 3 to approach each other so that the separation part forms an arch shape, that is, when the separation part is in a straight state, the third movable module 4 drives the first adsorption component 5 to first contact and absorb one side of the separation part, or the fourth movable module 8 drives the second adsorption component 9 to first contact and absorb the other side of the separation part; while the first movable module 1 and the second movable module 7 respectively drive the first clamping fixture 2 and the second clamping fixture 3 to approach each other to push the separation part; The third moving module 4 synchronously drives the first adsorbent 5 to move away from the detection area to apply a pulling force to the separation part, thereby controlling the separation part to form an arch shape that arches toward the first adsorbent 5, and then the fourth moving module 8 drives the second adsorbent 9 to suck the surface FPC soft board of the separation part away from the first adsorbent 5, and then drives the second adsorbent 9 to move away from the detection area, thereby separating the surface FPC soft board sucked by the second adsorbent 9 from the separation part; Alternatively, the fourth moving module 8 synchronously drives the second adsorbent 9 to move in a direction away from the detection area to apply a pulling force to the separation part, thereby controlling the separation part to form an arch shape that arches toward the second adsorbent 9, and then the third moving module 4 drives the first adsorbent 5 to suck the surface FPC soft board of the separation part away from the second adsorbent 9, and then drives the first adsorbent 5 to move in a direction away from the detection area, thereby separating the surface FPC soft board sucked by the first adsorbent 5 from the separation part; Therefore, when the separation part is in a straight state, the third movable module 4 drives the first adsorption component 5 to absorb one side of the separation part, or the fourth movable module 8 drives the second adsorption component 9 to absorb the other side of the separation part, which can control the arch direction of the separation part when it forms an arch shape, thereby controlling the separation part to form an arch shape in opposite directions in the two separation tests.

[0029] Among them, in this scheme, the first movable module 1, the second movable module 7, the third movable module 4 and the fourth movable module 8 can all be composed of a servo motor, a slide rail, a screw rod and a slider. The slider is slidably connected to the slide rail, the screw rod is inside the slide rail, and the slider is screwed to the screw rod. The servo motor drives the screw rod to make the slider slide in the slide rail to drive the first clamping fixture 2 / the second clamping fixture / the first adsorption component 5 / the second adsorption component 9 to move. The separation distance of the separation part of the multi-layer FPC soft board becomes adjustable through the precision servo motor module. At the same time, an integrated vacuum generator is installed in this scheme to provide vacuum suction for the first adsorption component 5 and the second adsorption component 9, and a filter is installed to filter the inhaled air to protect the multi-layer FPC soft board. In addition, a tooling plate, a vertical plate and a mounting frame are also provided in this scheme. The tooling plate is used for the installation of the shooting detector 6, and the mounting frame can be used for the installation and fixation of the third movable module 4 and the fourth movable module 8, and the vertical plate is used for the installation and fixation of the first movable module 1 and the second movable module 7.

[0030] Preferably, the first adsorption member 5 and the second adsorption member 9 both include a suction nozzle rod 10 and a suction nozzle 11; The nozzle rod 10 is a retractable nozzle rod 10 , and the nozzle 11 is made of soft rubber material.

[0031] Specifically, the retractable suction nozzle rod 10 is composed of a sleeve and a telescopic rod. The telescopic rod is slidably connected to the inside of the sleeve, and a telescopic spring is connected between the inside of the sleeve and the telescopic rod. The telescopic rod is connected to the suction nozzle 11, so that the suction nozzle contacts the multi-layer FPC soft board and can perform telescopic movement when subjected to a pushing or pulling force. The retractable suction nozzle rod 10 can ensure that the suction nozzle 11 softly contacts the surface of the multi-layer FPC soft board to reduce scratches, and activates the buffering effect when pulling the multi-layer FPC soft board to avoid the risk of mechanical damage such as tearing.

[0032] Secondly, the suction nozzle 11 adopts a customized silicone suction nozzle 11, which can prevent the multi-layer FPC soft board from being scratched during adsorption.

[0033] In the embodiment of the present solution, the first clamping fixture 2 includes a first fixture plate 201 and a first flip cover 202 foldably connected to the first fixture plate 201 via a rotating connection structure; The second clamping fixture 3 includes a second fixture plate 301 and a second flip cover 302 foldably connected to the second fixture plate 301 via a rotating connection structure; The rotating connection structure includes a rotating shaft block 1 arranged on the first fixture plate 201, and the first flip cover 202 is rotatably connected to the rotating shaft in the rotating shaft block 1, so that the first flip cover 202 can be turned over and folded on the first fixture plate 201; The second rotating shaft block 2 is arranged on the second fixture plate 301 , and the second flip cover 302 is rotatably connected with the rotating shaft in the second rotating shaft block 2, so that the second flip cover 302 can be turned over and folded on the second fixture plate 301 .

[0034] Specifically, when placing the multi-layer FPC soft board to be tested, the two ends of the multi-layer FPC soft board can be placed on the first fixture plate 201 and the second fixture plate 301, and then the first flip cover 202 and the second flip cover 302 are flipped over respectively to cover the non-testing part of the multi-layer FPC soft board, so as to fix the multi-layer FPC soft board to prevent the position of the multi-layer FPC soft board from shifting during the movement, resulting in the separation part being unable to face the first adsorption member 5, the second adsorption member 9 and the shooting detector 6; In order to prevent the first flip cover 202 and the second flip cover 302 from affecting the detection of the shooting detector 6, the first flip cover 202 and the second flip cover 302 are preferably aligned with the end surfaces of the first fixture plate 201 and the second fixture plate 301 respectively when they are flipped to cover the multi-layer FPC soft board, so as to prevent the protrusion of the first flip cover 202 and the second flip cover 302 from affecting the detection accuracy of the shooting detector 6; Preferably, adsorption magnets can be further provided on the first flip cover 202 and the second flip cover 302, and corresponding adsorbed blocks, such as iron, which can be attracted by the adsorption magnets are provided on the first fixture plate 201 and the second fixture plate 301, so that when the first flip cover 202 and the second flip cover 302 are flipped over to cover the multi-layer FPC soft board, the adsorption magnets can be magnetically fixed to the adsorbed blocks to avoid inertia and shaking during the movement, which may cause slight shaking and swaying of the first flip cover 202 and the second flip cover 302, resulting in a loose gap and positional displacement of the clamped multi-layer FPC soft board.

[0035] More preferably, the first fixture plate 201 and the second fixture plate 301 are both provided with a plurality of positioning PINs 12, the first flip cover 202 and the second flip cover 302 are both provided with clearance holes corresponding to the plurality of positioning PINs 12, and the plurality of positioning PINs 12 are arranged along the edge of the multi-layer FPC soft board, and when the first flip cover 202 and the second flip cover 302 are covered on the first fixture plate 201 and the second fixture plate 301 and press the multi-layer FPC soft board, the clearance holes correspond to the positioning PINs 12, such as Figure 4 As shown, the number of positioning PINs 12 distributed on the first fixture plate 201 is 4, and the number of positioning PINs 12 distributed on the second fixture plate 301 is 6; Multiple positioning PINs 12 can ensure that the circuit board can be placed in the same position on the first jig plate 201 and the second jig plate 301 each time the test is performed, thereby ensuring the consistency and comparability of the test results. The multi-layer FPC board can also be quickly positioned to the correct position, thereby reducing the operation time and complexity. At the same time, the multi-layer FPC board can be kept stable on the first jig plate 201 and the second jig plate 301, thereby reducing the detection error caused by the displacement of the multi-layer FPC board when the first jig plate 201 and the second jig plate 301 move or vibrate.

[0036] Furthermore, soft rubber strips 15 are provided at the ends of the first flip cover 202 and the second flip cover 302 that are in contact with the multi-layer FPC soft board when they are closed.

[0037] The edge of the position where the soft rubber strip 15 is pressed is aligned with the edge of the non-detection part of the multi-layer FPC soft board close to the separation part. By pressing the soft rubber strip 15, when the separation part forms an arch shape, the local stress generated between the edge of the separation part and the non-detection part can be dispersed, and the concentration of stress can be reduced, thereby reducing the damage to the multi-layer FPC soft board caused by bending. At the same time, the soft rubber strip 15 can also prevent the FPC soft board from directly contacting the surfaces of the first flip cover 202 and the second flip cover 302 during the bending process, thereby avoiding the occurrence of scratches; Preferably, a steel clamp is installed at the edge of the non-detection part of the multi-layer FPC soft board near the separation part, wherein the edge of the soft rubber strip 15 exceeds the steel clamp, and the specific excess value can be 0.1mm to avoid affecting the detection of the separation part. At the same time, it can effectively reduce the wear and tear of the edge and the steel clamp during the process of the separation part forming an arch shape, and provide additional protection to prevent the edge of the steel clamp from cutting or scratching the circuit soft board.

[0038] In the embodiment of the present solution, the first jig plate 201 is provided with a material shortage sensor 13 and a cover flip sensor 14 on a side away from the first flip cover 202, and the first jig plate 201 has perforations corresponding to the material shortage sensor 13 and the cover flip sensor 14; The material shortage sensor 13 is located in the overlapped area between the first flip cover 202 and the multi-layer FPC soft board, and the flip cover sensor 14 is located in the area outside the overlapped area between the first flip cover 202 and the multi-layer FPC soft board; Similarly, the second fixture plate 301 may be provided with a material shortage sensor 13 and a cover flip sensor 14 similar to the first fixture plate 201, and no further details are given here; The first jig plate 201 and the second jig plate 301 are both provided with a material shortage sensor 13 and a cover flip sensor 14 on the side away from the first flip cover 202 and the second flip cover 302 , and the first jig plate 201 and the second jig plate 301 are both provided with perforations corresponding to the material shortage sensor 13 and the cover flip sensor 14 .

[0039] Specifically, during the inspection of the multi-layer FPC soft board, the material shortage sensor 13 can be used to detect whether there are multi-layer FPC soft boards on the first fixture plate 201, and the flip cover sensor 14 can be used to detect whether the first flip cover 202 covers the multi-layer FPC soft board. When both the material shortage sensor 13 and the flip cover sensor 14 detect an object, the device is started to perform the inspection by pressing the start button. Similarly, the material shortage sensor 13 can be used to detect whether there are multi-layer FPC soft boards on the second fixture plate 301, and the flip cover sensor 14 can be used to detect whether the second flip cover 302 covers the multi-layer FPC soft board. No further details will be given here.

[0040] In an embodiment of the present scheme, an identification hole corresponding to the identification code of the multi-layer FPC soft board is opened on the first jig plate 201 or the second jig plate 301, and a barcode scanner 16 is also installed on the first jig plate 201 or the second jig plate 301. The barcode scanner probe of the barcode scanner 16 scans and records the identification code of the multi-layer FPC soft board through the identification hole.

[0041] Specifically, before the test begins, use the barcode scanner 16 to scan the identification code (barcode or QR code) on the multi-layer FPC soft board, read the unique identifier of the multi-layer FPC soft board, and associate the read identifier with the test result, and automatically record it in the test system. After the test result is obtained, the test result is input into the test system, associated with the unique identifier of the multi-layer FPC soft board, and finally the data is stored in the database; This enables automated data recording, reduces errors and time associated with manual recording, improves testing efficiency, and centrally manages test data for easy query and analysis, facilitating quality control and continuous improvement.

[0042] See also Figure 1-11 According to the above embodiments, this embodiment also proposes a separation detection method to detect the separated multi-layer FPC soft board, the method includes: The reference is created by template matching of the fixed feature positions of the first clamping fixture 2 and the second clamping fixture 3. After the algorithm finds the template, it matches the position to generate the reference point position 1 corresponding to the fixed feature position of the first clamping fixture 2 and the reference point position 2 corresponding to the fixed feature position of the second clamping fixture 3, such as Figure 5 The first clamping fixture 2 and the second clamping fixture 3 shown have protruding fixed features on opposite sides, and the visual algorithm finds the two fixed features by shooting the image captured by the detector 6 and matches them to generate the first reference point and the second reference point; According to the reference point position 1, a certain distance is offset from the fixed characteristic position of the first clamping fixture 2, and the specific offset distance is 0.05mm. Then, the root search area 1 is generated by algorithm matching. According to the reference point position 2, a certain distance is offset from the fixed characteristic position of the second clamping fixture 3, and the specific offset distance is 0.05mm. Then, the root search area 4 is generated by algorithm matching. After finding the area 1 and the area 4, the edge pair is used to measure the thickness of the FPC soft board in the area 1 and the area 4, and only the width of the first pair of edge pairs is found. By setting the upper and lower limit tolerances of the thickness of the FPC soft board, it is judged whether the multi-layer FPC soft boards are adhered; According to the reference point 1 and the reference point 2, positioning and matching are performed, and the arc angle is searched in a straight line. According to the real-time angle of the arc, the edge pair measurement areas 2 and 3 with the same angle are generated. The measurement area can be moved or increased according to the actual working conditions. The edge pair width measurement algorithm is used to output the PFC soft board thickness of areas 2 and 3. The upper and lower limit tolerances of the PFC soft board thickness are set to determine whether the multi-layer FPC soft boards are adhered to each other. Among them, the product thickness measured in Area 1, Area 2, Area 3 and Area 4 is the thickness of a single-layer FPC, which is judged as OK for separation. The product thickness measured is the thickness of two-layer FPC and three-layer FPC, which is greater than the thickness of a single-layer FPC, which is judged as NG. The thickness of the FPC soft board for separation OK is 0.05mm, and the thickness of the FPC soft board for separation NG is 0.1mm for two layers and 0.15mm for three layers, that is, the thickness of the FPC soft board is greater than 0.05, which is judged as NG; like Figure 6As shown, the visual algorithm performs distance offset between the first reference point and the second reference point to match and generate area one, area two, area three and area four. During the first inspection, after the upper layer of the separation part is separated by adsorption and pulling by the separation device, the thickness of the FPC soft board in area one and area four is measured by the edge pair measurement algorithm, while area two and area three will capture the measurement area in real time according to the arc angle formed by the upper layer, and then the thickness of the FPC soft board in area two and area three is measured by the edge pair measurement algorithm. Finally, according to the set upper and lower limit tolerances of the soft board thickness, it is judged whether the upper and middle layers of the FPC soft board are completely separated, that is, the thickness of the FPC soft board in area one, area two, area three and area four does not exceed 0.05mm per layer. The FPC soft board thickness is judged to be OK for separation, and the thickness greater than 0.05mm is judged to be NG; like Figure 7 As shown, a second inspection is then performed. After the lower layer of the multi-layer FPC soft board is separated by suction and pulling by the separation equipment, the thickness of the FPC soft board in area one and area four is measured using the edge pair measurement algorithm, while area two and area three will capture the measurement area in real time according to the arc angle formed by the lower layer, and then the thickness of the FPC soft board in area two and area three is measured by the edge pair measurement algorithm. Finally, according to the set upper and lower limit tolerances of the soft board thickness, it is judged whether the FPC soft boards of the lower layer and the middle layer are completely separated, that is, the thickness of the FPC soft boards in area one, area two, area three and area four that does not exceed 0.05mm per single layer is judged to be separated OK, and the thickness greater than 0.05mm is judged to be NG; Finally, the final conclusion is drawn through the two test results, that is, if the measurement results of area 1, area 2, area 3 and area 4 in the two test results are all OK, it means that the separated parts of the multi-layer FPC soft board have been completely separated from each other. Figure 8 The figure shows a schematic diagram of a detection OK in which the layers of the separated part of the multi-layer FPC soft board are completely separated. If the measurement results of area 1, area 2, area 3 and area 4 of the two test results have at least one NG, it means that the layers of the separated part of the multi-layer FPC soft board are not completely separated, such as Figure 9-11 The figure shows a detection NG schematic diagram of a multi-layer FPC soft board that is not completely separated.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An FPC soft board separation detection device, characterized in that: include: The arch pushing mechanism includes a first clamping fixture, a second clamping fixture and a first moving module, wherein the first clamping fixture and the second clamping fixture are used to clamp both ends of the multi-layer FPC soft board, so that a detection area of ​​the multi-layer FPC soft board is formed between the first clamping fixture and the second clamping fixture, and the first moving module is used to drive the first clamping fixture to move toward the second clamping fixture, so that the multi-layer FPC soft board in the detection area forms an arch shape; The adsorption and separation mechanism includes a third movable module, the third movable module is connected to the first adsorption member, the third movable module is used to drive the first adsorption member to approach the detection area and adsorb the surface FPC soft board of the multi-layer FPC soft board, and then move away from the detection area to separate the surface FPC soft board of the multi-layer FPC soft board; The photographing detector is used to photograph and detect the separation state of the multi-layer FPC soft board in the detection area after separation.

2. The FPC soft board separation detection equipment according to claim 1 is characterized in that: The push-arch mechanism also includes a second movable module for driving the second clamping fixture to move toward the first clamping fixture. The first movable module and the second movable module respectively drive the first clamping fixture and the second clamping fixture so that the first clamping fixture and the second clamping fixture can be moved closer to or farther from each other.

3. The FPC soft board separation detection equipment according to claim 1 or 2, characterized in that: The adsorption and separation mechanism also includes a fourth movable module and a second adsorption component which are arranged opposite to the third movable module and the first adsorption component. The third movable module and the fourth movable module can respectively drive the first adsorption component and the second adsorption component to approach the detection area to adsorb the surface FPC soft boards on opposite sides of the multi-layer FPC soft board.

4. The FPC soft board separation detection equipment according to claim 3 is characterized in that: The multi-layer FPC soft board in the detection area is in a straight state, the third movable module drives the first adsorbent to first contact and absorb one side of the multi-layer FPC soft board in the detection area, or the fourth movable module drives the second adsorbent to first contact and absorb the other side of the multi-layer FPC soft board in the detection area; In the process that the first movable module and the second movable module respectively drive the first clamping fixture and the second clamping fixture to approach each other, the third movable module drives the first adsorption component to move away from the detection area, or the fourth movable module drives the second adsorption component to move away from the detection area, so as to control the arching direction of the multilayer FPC soft board in the detection area.

5. The FPC soft board separation detection equipment according to claim 4 is characterized in that: The first adsorption member and the second adsorption member each include a nozzle rod and a nozzle; Wherein, the suction nozzle rod is a retractable suction nozzle rod.

6. The FPC soft board separation detection equipment according to claim 3 is characterized in that: The first clamping fixture comprises a first fixture plate and a first flip cover foldably connected to the first fixture plate via a rotating connection structure; The second clamping fixture comprises a second fixture plate and a second flip cover foldably connected to the second fixture plate via a rotating connection structure.

7. The FPC soft board separation detection equipment according to claim 6 is characterized in that: The first fixture plate and the second fixture plate are both provided with a plurality of positioning PINs, the first flip cover and the second flip cover are both provided with clearance holes corresponding to the plurality of positioning PINs, and the plurality of positioning PINs are arranged along the edge of the multi-layer FPC soft board.

8. The FPC soft board separation detection equipment according to claim 6 is characterized in that: When the first flip cover and the second flip cover are closed, soft rubber strips are arranged at the ends of the contact surface with the multi-layer FPC soft board.

9. The FPC soft board separation detection device according to claim 6, characterized in that: The first fixture plate is provided with a material shortage sensor and a cover flip sensor on a side away from the first flip cover, and the first fixture plate has perforations corresponding to the material shortage sensor and the cover flip sensor; The material shortage sensor is located in the overlapping area between the first flip cover and the multi-layer FPC soft board, and the flip cover sensor is located in the area outside the overlapping area between the first flip cover and the multi-layer FPC soft board.

10. A separation and detection method, characterized in that: An FPC soft board separation detection device applied to any one of claims 1 to 9 is used to detect the separated multi-layer FPC soft board, and the method includes: The reference is created by template matching of the fixed feature positions of the first clamping fixture and the second clamping fixture. After the algorithm finds the template, the matching position is used to generate reference point position 1 corresponding to the fixed feature position of the first clamping fixture and reference point position 2 corresponding to the fixed feature position of the second clamping fixture. According to the reference point 1, a distance offset is performed at a certain distance from the fixed feature position of the first clamping fixture, and then the root search area 1 is generated through algorithm matching. According to the reference point 2, a distance offset is performed at a certain distance from the fixed feature position of the second clamping fixture, and then the root search area 4 is generated through algorithm matching. After finding the area 1 and the area 4, the thickness of the FPC soft board is measured using the edge pair, and only the width of the first pair of edge pairs is found. By setting the upper and lower limit tolerances of the thickness of the FPC soft board, it is determined whether the multi-layer FPC soft boards are adhered; According to the reference point 1 and the reference point 2, positioning and matching are performed, and the arc angle is searched in a straight line. According to the real-time angle of the arc, the edge pair measurement areas 2 and 3 with the same angle are generated. The measurement area can be moved or increased according to the actual working conditions. The edge pair width measurement algorithm is used to output the FPC soft board thickness of areas 2 and 3. The upper and lower limit tolerances of the FPC soft board thickness are set to determine whether the multi-layer FPC soft boards are adhered to each other. Among them, the product thickness measured in area 1, area 2, area 3 and area 4 is the thickness of a single-layer FPC, which is judged as separation OK, and the product thickness measured is the thickness of two-layer FPC and three-layer FPC, which is greater than the thickness of a single-layer FPC, which is judged as NG.

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