Thin film circuit roll material defect detection equipment

Abstract

The invention discloses thin film circuit roll material defect detection equipment. The equipment comprises an unwinding mechanism used for unwinding a thin film circuit roll material; the detection wheel mechanism is arranged on one side of the unwinding mechanism and comprises a transparent detection rotary drum and pressing roller assemblies arranged on the two sides of the detection rotary drum respectively, and the pressing roller assemblies are used for tightly attaching a film to the detection rotary drum; the counterweight mechanisms are respectively arranged on two sides of the detection wheel mechanism and are used for keeping constant tension of the thin film on the detection rotary drum; the visual detection mechanism comprises a plurality of detection camera assemblies which are arranged in a staggered mode and face the detection rotary drum. The winding mechanism is arranged on one side of the detection wheel assembly and used for winding the thin film circuit roll material. The position, the speed and the tension of the film can be automatically adjusted in the detection process, and the stability and the accuracy of a film circuit in the detection process are ensured. And meanwhile, various defects in the thin film circuit can be efficiently and accurately identified, so that the production efficiency is improved, and the defective product rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a film circuit coil defect detection device. Background Art

[0002] Thin film circuits, as an important component of the modern electronics industry, are widely used in various electronic devices, including but not limited to smartphones, tablets, wearable devices, display screens, and various sensors. With the continuous advancement of science and technology, the design of thin film circuits is becoming increasingly complex, and the requirements for their manufacturing accuracy and quality control are becoming increasingly higher. However, in the production process of thin film circuits, due to various factors such as materials, processes or equipment, various defects such as cracks, open circuits, short circuits, foreign matter contamination, etc. are inevitable. These defects will seriously affect the performance and reliability of thin film circuits.

[0003] Traditional thin film circuit defect detection methods mostly rely on manual visual inspection, which is not only inefficient but also easily affected by human factors, resulting in missed detection or misjudgment. With the development of automation technology, some automated inspection equipment based on machine vision has gradually been applied to defect detection of thin film circuits. However, these devices often face many challenges when processing thin film circuits in roll form.

[0004] First, the film circuit in the form of a roll is prone to deviation during the conveying process, affecting the accuracy of the detection. Secondly, the speed of the film circuit during the detection process is often not adjustable, which limits the adaptability and flexibility of the equipment. In addition, the tension change of the film during the conveying process will also affect the accuracy and stability of the detection.

[0005] The prior art has the following defects:

[0006] 1. Balance between detection accuracy and speed: On high-speed production lines, how to improve detection accuracy while ensuring detection speed is a technical challenge. Current thin-film circuit defect detection technology often requires a trade-off between detection accuracy and speed, and it is difficult to achieve the best at the same time.

[0007] 2. Detection capability of complex defects: For some complex or tiny defects, such as sub-surface defects or tiny scratches, existing detection technologies may be difficult to accurately identify. This requires further improvement of the resolution and sensitivity of detection technology to achieve effective detection of these complex defects.

[0008] 3. Cost and maintenance: Thin-film circuit defect detection equipment is usually expensive and requires regular maintenance and calibration, which increases the company's operating costs and time costs, and also limits the popularity and application scope of detection technology.

[0009] 4. Adaptability and flexibility: Different thin-film circuit products have different characteristics and requirements, requiring different detection technologies and parameter settings; current detection technologies are often difficult to adapt to all types of thin-film circuit products and need to be customized and optimized for different products. Summary of the invention

[0010] In view of the defects in the prior art, the present invention provides a thin film circuit roll defect detection device to solve the problems raised by the above background technology.

[0011] The present invention provides a thin film circuit roll defect detection device, comprising:

[0012] Unwinding mechanism, used for unwinding film circuit rolls;

[0013] The detection wheel mechanism is arranged on one side of the unwinding mechanism, and comprises a transparent detection drum and pressing roller assemblies respectively arranged on both sides of the detection drum, wherein the pressing roller assemblies are used to make the film tightly fit on the detection drum;

[0014] A counterweight mechanism, respectively arranged on both sides of the detection wheel mechanism, for maintaining a constant tension of the film on the detection drum;

[0015] A visual inspection mechanism, comprising a plurality of inspection camera assemblies arranged in a staggered manner and disposed toward the inspection rotating drum;

[0016] The winding mechanism is arranged on one side of the detection wheel assembly and is used for winding the film circuit roll.

[0017] Preferably, the detection camera assembly includes: a line scan camera, an adapter tube and a lens arranged at one end of the line scan camera, an arc backlight source arranged inside the detection rotating cylinder corresponding to the detection camera, and a coaxial light source and an annular light source arranged in front of the lens of each detection camera.

[0018] Preferably, the counterweight mechanism comprises:

[0019] Detection bracket;

[0020] A counterweight guide rod arranged on the detection bracket;

[0021] A sliding block moving along the guide of the counterweight guide rod;

[0022] A counterweight block disposed on the sliding block;

[0023] A counterweight roller shaft connected to the counterweight block;

[0024] Set a buffer spring under the counterweight;

[0025] An upper tension adjustment sensor and a lower tension adjustment sensor are arranged corresponding to the counterweight roller shaft, and a sensor sheet corresponding to the upper tension adjustment sensor and the lower tension adjustment sensor is arranged on the sliding block.

[0026] Preferably, the unwinding mechanism includes: an unwinding bracket, an unwinding air shaft and an unwinding motor arranged on the unwinding bracket, an unwinding end film tearing air shaft arranged below the unwinding air shaft, a first roller shaft arranged on one side of the unwinding air shaft and the unwinding end film tearing air shaft, a material receiving platform arranged on one side of the pressure roller shaft, a second roller shaft arranged on the other side of the material receiving platform, a first deviation correction detection sensor arranged at one end of the second roller shaft, and a first deviation correction component arranged at the bottom of the unwinding bracket.

[0027] Preferably, the material receiving platform is provided with a cutting groove, a pressing cylinder assembly and a pressing block.

[0028] Preferably, the first deflection correction component includes a first sliding guide rail arranged at the bottom of the unwinding bracket, a first servo electric cylinder electrically connected to the first deflection correction sensor, and first limiting rubber pads arranged at both ends of the first sliding guide rail.

[0029] Preferably, the winding mechanism includes: a winding bracket, a winding air shaft arranged on the winding bracket, a film-tearing air shaft at the unwinding end arranged below the winding air shaft, a first deviation correction detection sensor arranged on one side of the winding air shaft, and a second deviation correction component arranged at the bottom of the winding bracket.

[0030] Preferably, an ion wind rod is correspondingly arranged on the detection drum to remove static electricity from the detection section of the film circuit roll material so that it will not be contaminated with dust during detection.

[0031] Preferably, it also includes a dust cleaning system, which includes an FFU fan filter unit and a posted dust removal sticker.

[0032] Preferably, the detection wheel mechanism includes a detection drum with a hollow interior, a rotating shaft arranged inside the detection drum, a fixed shaft sleeved on the outside of the rotating shaft, a first inner wheel and a second inner wheel arranged on the fixed shaft, and a drum cover connecting the rotating shaft and the detection drum, and the backlight source is arranged on the first inner wheel and the second inner wheel.

[0033] Beneficial Effects

[0034] The present invention provides a thin film circuit roll material defect detection device, comprising: an unwinding mechanism, a detection wheel mechanism, a counterweight mechanism, a visual detection mechanism and a rewinding mechanism; the device can automatically adjust the position, speed and tension of the film during the detection process to ensure the stability and accuracy of the thin film circuit during the detection process. At the same time, the device can efficiently and accurately identify various defects in the thin film circuit, thereby improving production efficiency and reducing the defective product rate.

[0035] High precision: Machine vision inspection uses high-resolution cameras and can be combined with advanced image processing algorithms to capture tiny defects and changes. Its detection accuracy is much higher than manual inspection.

[0036] High efficiency: The detection is carried out by line scanning, and the detection speed is much higher than manual detection and other automated detection solutions.

[0037] Strong compatibility: The defect detection equipment is compatible with film detection of different materials, types, widths and lengths, and the visual lighting method is flexible, taking into account both front lighting and back lighting.

[0038] Good stability: The defect detection equipment is not affected by human emotions, fatigue and other factors, and can maintain a stable detection state.

[0039] High reliability: The defect detection equipment performs detection through preset algorithms and models, and the results are more objective and reliable, avoiding misjudgments and missed judgments that may occur in manual detection. In this set of detection devices, no tension detection sensor is used. The tension detection sensor + motor adjustment has a certain hysteresis, and the present invention only uses two counterweight mechanisms to achieve constant tension of the material strip, and theoretically, there is no change in the tension during the entire detection process, with high reliability and no hysteresis.

[0040] With automatic deviation correction function: The equipment has a built-in advanced automatic deviation correction system, which can monitor and adjust the position of the film circuit material strip in real time, effectively solving the deviation problem during the coil conveying process and ensuring the accuracy of detection.

[0041] Equipped with constant tension system: It has a unique tension control system. Through the coordinated action of the counterweight mechanism and the servo motor, it can maintain a constant tension of the film during the detection process, avoiding detection errors caused by tension changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0043] Figure 2 It is a structural schematic diagram of the unwinding mechanism of the present invention;

[0044] Figure 3 It is a structural schematic diagram of the detection wheel mechanism of the present invention;

[0045] Figure 4 For the present invention Figure 1 A schematic diagram of a partial structure of an embodiment;

[0046] Figure 5 It is a structural schematic diagram of the counterweight mechanism of the present invention;

[0047] Figure 6 It is a structural schematic diagram of the visual detection mechanism of the present invention;

[0048] Figure 7 for Figure 6 A schematic diagram of the main structure of the embodiment;

[0049] Figure 8 It is a structural schematic diagram of the camera detection component of the present invention;

[0050] Fig. 9 It is a structural schematic diagram of the winding mechanism of the present invention;

[0051] Fig.10 It is a schematic structural diagram of the dust cleaning system of the present invention;

[0052] Among them, 10, unwinding mechanism; 11, unwinding bracket; 12, unwinding air shaft; 13, unwinding motor; 14, unwinding end film tearing air shaft; 15, first roller, 16 material receiving platform, 161, cutting groove; 162, clamping cylinder assembly; 163, pressing block; 17, second roller, 18, first deviation correction detection sensor; 19, first deviation correction assembly; 191, first sliding guide rail, 192, first servo electric cylinder; 193, first limit rubber pad; 20, detection wheel mechanism; 21, drum motor; 22, detection drum; 23, rotating shaft; 24, fixed shaft; 25, first inner wheel; 26, second inner wheel; 27, drum cover; 28, ion wind rod; 29, clamping roller Components; 30. Counterweight mechanism; 31. Detection bracket; 32. Counterweight guide rod; 33. Counterweight block; 331. Sliding block; 34. Counterweight roller; 35. Buffer spring; 36. Backlight source; 37. Upper tension adjustment sensor; 38. Lower tension adjustment sensor; 39. Sensor sheet; 40. Visual detection mechanism; 47. Detection camera component; 41. Line scan camera; 42. Adapter tube; 43. Lens; 45. Coaxial light source; 46. Ring light source; 50. Winding mechanism; 51. Winding bracket; 52. Winding air shaft; 53. Unwinding end film tearing air shaft; 54. Second deviation correction detection sensor; 55. Second deviation correction component; 60. Dust cleaning system; 61. Dust removal sticker. DETAILED DESCRIPTION

[0053] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 an indirect connection 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.

[0057] Reference Figures 1 to 10 , which is a specific embodiment proposed by the present invention.

[0058] The present invention provides a thin film circuit roll defect detection device, comprising: a reeling mechanism 10, a detection wheel mechanism 20, a counterweight mechanism 30, a visual detection mechanism 40 and a reeling mechanism 50; the reeling mechanism 10 is used for reeling the thin film circuit roll; the detection wheel mechanism 20 is arranged on one side of the reeling mechanism 10, and comprises a transparent detection drum 22 and a clamping roller assembly 29 respectively arranged on both sides of the detection drum 22, the clamping roller assembly 29 is used for the film to fit tightly on the detection drum 22; the counterweight mechanism 30 is respectively arranged on both sides of the detection wheel mechanism 20, and is used to maintain a constant tension of the film on the detection drum 22; the visual detection mechanism 40 comprises a plurality of detection camera assemblies 47 which are staggered and arranged toward the detection drum 22; the reeling mechanism 50 is arranged on one side of the detection wheel assembly, and is used for reeling the thin film circuit roll.

[0059] In one embodiment, reference Figure 6-Figure 8The detection camera assembly 47 includes: a line scan camera 41, an adapter tube 42 and a lens 43 arranged at one end of the line scan camera 41, an arc-shaped backlight source 36 arranged inside the detection drum 22 corresponding to the detection camera, and a coaxial light source 45 and an annular light source 46 arranged in front of the lens 43 of each detection camera. It also includes a fine-tuning assembly 47 for driving the detection camera assembly 47 to move closer to or away from the detection drum 22. The staggered arrangement of the detection camera assembly 47 ensures that the field of view completely covers the width of the flexible film circuit. The fine-tuning assembly electrically adjusts the object distance. The coaxial light source 45 and the annular light source 46 in front of the lens 43 are front lights, and the arc-shaped backlight source 36 inside the detection drum 22 can adopt different lighting methods according to the different materials of the film to achieve the best lighting effect.

[0060] In one embodiment, reference Figure 4 and Figure 5 The counterweight mechanism 30 includes: a detection bracket 31; a counterweight guide rod 32 arranged on the detection bracket 31; a sliding block 331 moving along the guide of the counterweight guide rod 32, a counterweight block 33 arranged on the sliding block 331; a counterweight roller 34 connected to the counterweight block 33; a buffer spring 35 arranged below the counterweight block 33; an upper tension adjustment sensor 37 and a lower tension adjustment sensor 38 arranged corresponding to the counterweight roller 34, and a sensor sheet 39 corresponding to the upper tension adjustment sensor 37 and the lower tension adjustment sensor 38. The counterweight mechanism 30 arranged on both sides of the detection drum 22 respectively applies a tension to the film circuit coil, so that the film circuit is fully unfolded on the detection drum 22 and maintains a constant tension. The number and weight of the counterweight blocks 33 of the counterweight mechanism 30 on both sides of the detection drum 22 are exactly the same, so that the force exerted on the film circuit on both sides of the detection drum 22 is always the pulling force exerted on the film by the gravity of the counterweight blocks 33, and the forces on both sides are exactly the same, so the forces on both sides cancel each other out. Even in the detection process, as the outer diameter of the roll of material of the unwinding air shaft 12 and the winding air shaft 52 changes, the linear speed of the unwinding end and the winding end will also change, but the change in linear speed will only cause the counterweight roller 34 of the counterweight mechanism 30 to float up and down along the counterweight guide rod 32, and will not cause the speed of the film circuit material roll on the detection drum 22 to change. The force that drives the film circuit material roll forward only comes from the friction between the drum and the material belt.

[0061] As the detection progresses, the line speed of the unwinding end becomes smaller and smaller, the counterweight roller 34 on the counterweight mechanism 30 will slowly rise, and when the induction sheet 39 triggers the upper tension adjustment sensor 37, the speed of the unwinding motor 13 will increase, and the counterweight roller 34 of the counterweight mechanism 30 will descend along the counterweight guide rod 32 until the induction sheet 39 triggers the lower tension adjustment sensor 38; as the detection progresses, the line speed of the winding end becomes larger and larger, the unwinding roller on the counterweight mechanism 30 will slowly rise, and when the induction sheet 39 triggers the upper tension adjustment sensor 37, the speed of the unwinding motor 13 will slow down, and the counterweight roller 34 of the counterweight mechanism 30 will descend along the counterweight guide rod 32 until the induction sheet 39 triggers the lower tension adjustment sensor 38; the above steps are repeated to keep the tension constant. Different numbers of counterweight blocks 33 can be placed for different film circuit materials to adapt to the tension requirements of different film materials.

[0062] In one embodiment, reference Figure 3 The detection wheel mechanism 20 includes a detection drum 22 with a hollow interior, a rotating shaft 23 disposed inside the detection drum 22, a fixed shaft 24 sleeved outside the rotating shaft 23, a first inner wheel 25 and a second inner wheel 26 disposed on the fixed shaft 24, and a drum cover 27 connecting the rotating shaft 23 and the detection drum 22. The backlight source 36 is disposed on the first inner wheel 25 and the second inner wheel 26. The rotating shaft 23 of the detection drum 22 is connected to the drum motor 21; in one embodiment, the fixed shaft 24 is fixed, and the backlight source 36 is projected onto the flexible film through the detection drum 22. When the detection drum 22 rotates, the flexible film is driven to move. Since the backlight source 36 is mounted on the fixed shaft 24, when working, the backlight source 36 is in a stationary state, and the lighting position of the backlight source 36 is also fixed.

[0063] In one embodiment, reference Figure 2 The unwinding mechanism 10 includes: an unwinding bracket 11, an unwinding air shaft 12 and an unwinding motor 13 arranged on the unwinding bracket 11, an unwinding end film tearing air shaft 14 arranged below the unwinding air shaft 12, a first roller 15 arranged on one side of the unwinding air shaft 12 and the unwinding end film tearing air shaft 14, a material receiving platform 16 arranged on one side of the pressure roller shaft, a second roller 17 arranged on the other side of the material receiving platform 16, a first correction detection sensor 18 arranged at one end of the second roller 17, and a first correction component 19 arranged at the bottom of the unwinding bracket 11.

[0064] In one embodiment, reference Figure 2 The receiving platform 16 is provided with a cutting groove 161, a pressing cylinder assembly 162 and a pressing block 163. When the coil is replaced, the pressing cylinder assembly 162 is retracted to drive the pressing block 163 to press the coil to facilitate the cutting of the coil.

[0065] In one embodiment, reference Figure 2 The first deflection correction component 19 includes a first sliding guide rail 191 disposed at the bottom of the unwinding bracket 11, a first servo electric cylinder 192 electrically connected to the first deflection correction sensor, and first limit rubber pads 193 disposed at both ends of the first sliding guide rail 191. The first deflection correction component 19 adjusts the offset, the first deflection correction sensor detects the offset of the edge of the film circuit roll in real time, and feeds back the offset signal to the control system, and the system controls the extension amount of the first servo electric cylinder 192 according to the signal to achieve the deflection correction effect.

[0066] In one embodiment, reference Fig. 9 The winding mechanism 50 includes: a winding bracket 51, a winding air shaft 52 arranged on the winding bracket 51, a film-tearing air shaft 53 at the unwinding end arranged below the winding air shaft 52, a second correction detection sensor 54 arranged on one side of the winding air shaft 52, and a second correction component 55 arranged at the bottom of the winding bracket 51.

[0067] In one embodiment, an ion wind bar 28 is correspondingly disposed on the detection drum 22 to remove static electricity from the detection section of the thin film circuit coil so that it will not be contaminated with dust during detection.

[0068] In one embodiment, reference Fig.10 , and also includes a dust cleaning system 60, which includes an FFU fan filter unit and a posted dust sticker 61. The FFU fan filter unit continuously blows out filtered clean air to the inside of the equipment, making the air pressure inside the equipment slightly higher than that outside, preventing external dust from entering the detection equipment; the dust generated inside the equipment itself will also be blown down by the wind blown by the FFU until it sticks to the dust sticker, and only the dust sticker needs to be replaced manually regularly.

[0069] The detection process of a thin film circuit coil defect detection device is as follows:

[0070] Step 1. When the equipment is stopped, manually pick up the flexible film circuit roll from the roll rack and place the roll on the unwinding air shaft 12. After placement, the air shaft at the unwinding position is ventilated to fix the roll.

[0071] Step 2, manually pick up an empty coil core from the coil rack, put it on the winding air shaft 52, and then ventilate the air shaft to fix the empty coil core.

[0072] Step 3, manually pass the guide film at the head end of the coil, which has no printed circuit and is made of transparent material, through the unwinding mechanism 10, the counterweight mechanism 30, the detection wheel mechanism 20, the visual detection mechanism 40 and the winding mechanism 50 in sequence, and finally use double-sided tape to fix the guide film on the empty coil core of the winding air shaft 52. During the threading process, the wired laser assists in locating the edge of the tape.

[0073] Step 4. The device also has an unwinding end film-tearing inflatable shaft 14 and an unwinding end film-tearing inflatable shaft 53. If there is a back film such as a release film on the back of the film strip, it is necessary to manually insert the hollow inner core tube of the rolled back film into the unwinding end film-tearing inflatable shaft 14. After the placement is completed, the unwinding end film-tearing inflatable shaft 14 is ventilated, the inner core tube is fixed, and then the back film is manually rolled on the inner core tube.

[0074] Step 5. Press the start button manually, and the motors of the unwinding air shaft 12, the detection drum 22, the winding air shaft 52 and the back film tearing air shaft all start working, driving the flexible film circuit to move toward the winding end. During the movement, the line scan camera 41 detection system located on the detection wheel starts working to detect the flexible film circuit.

[0075] There is also a transparent guide film at the end of the coil. During the inspection process, the system can automatically detect whether the current coil has been inspected based on this feature. When the inspection is completed, the system automatically stops and emits a beep or indicator light signal to indicate that the inspection is completed, reminding manual material replacement. The material replacement process is as follows:

[0076] Step 1. The system detects that the flexible film circuit material roll has been inspected, the equipment stops, all motors stop rotating, and the clamping cylinder assembly 162 located above the material receiving platform 16 is retracted to tightly press the middle film material strip to ensure that the flexible film circuit material roll does not lose tension and fall when cutting the first and last ends.

[0077] Step 2, manually use a special cutting tool to cut the material strip along the cutting groove on the material receiving table, cut off the air of the unwinding air shaft 12, and take out the coiled material at the unwinding position.

[0078] Step 3, repeat the Step 1 action when threading the material for the first time.

[0079] Beneficial Effects

[0080] The present invention provides a thin film circuit roll material defect detection device, comprising: an unwinding mechanism 10, a detection wheel mechanism 20, a counterweight mechanism 30, a visual detection mechanism 40 and a rewinding mechanism 50; the device can automatically adjust the position, speed and tension of the film during the detection process to ensure the stability and accuracy of the thin film circuit during the detection process. At the same time, the device can efficiently and accurately identify various defects in the thin film circuit, thereby improving production efficiency and reducing the defective product rate.

[0081] High precision: Machine vision inspection uses high-resolution cameras and advanced image processing algorithms to capture tiny defects and changes, and its detection accuracy is much higher than manual inspection.

[0082] High efficiency: The detection is carried out by line scanning, and the detection speed is much higher than manual detection and other automated detection solutions.

[0083] Strong compatibility: The defect detection equipment is compatible with film detection of different materials, types, widths and lengths, and the visual lighting method is flexible, taking into account both front lighting and back lighting.

[0084] Good stability: The defect detection equipment is not affected by human emotions, fatigue and other factors, and can maintain a stable detection state.

[0085] High reliability: The defect detection equipment performs detection through preset algorithms and models, and the results are more objective and reliable, avoiding misjudgments and missed judgments that may occur in manual detection. In this set of detection devices, no tension detection sensor is used, and only two counterweight mechanisms 30 are used to achieve constant tension of the material strip. In theory, there is no change in tension during the entire detection process, and the reliability is high.

[0086] With automatic deviation correction function: The equipment has a built-in advanced automatic deviation correction system, which can monitor and adjust the position of the film circuit material strip in real time, effectively solving the deviation problem during the coil conveying process and ensuring the accuracy of detection.

[0087] Equipped with a constant tension system: Equipped with a unique tension control system, through the coordinated action of the counterweight mechanism 30 and the servo motor, it can maintain a constant tension of the film during the detection process, avoiding detection errors caused by tension changes.

[0088] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A film circuit roll defect detection device, characterized in that: include: Unwinding mechanism, used for unwinding film circuit rolls; The detection wheel mechanism is arranged on one side of the unwinding mechanism, and comprises a transparent detection drum and pressing roller assemblies respectively arranged on both sides of the detection drum, wherein the pressing roller assemblies are used to make the film tightly fit on the detection drum; A counterweight mechanism, respectively arranged on both sides of the detection wheel mechanism, for maintaining a constant tension of the film on the detection drum; A visual inspection mechanism, comprising a plurality of inspection camera assemblies arranged in a staggered manner and disposed toward the inspection rotating drum; The winding mechanism is arranged on one side of the detection wheel assembly and is used for winding the film circuit roll.

2. The thin film circuit roll material defect detection device according to claim 1, characterized in that: The detection camera assembly includes: a line scan camera, a transfer tube and a lens arranged at one end of the line scan camera, an arc backlight source arranged inside the detection rotating tube corresponding to the detection camera, and a coaxial light source and an annular light source arranged in front of the lens of each detection camera.

3. The thin film circuit roll material defect detection device according to claim 1, characterized in that: The counterweight mechanism comprises: Detection bracket; A counterweight guide rod arranged on the detection bracket; A sliding block moving along the guide of the counterweight guide rod; A counterweight block disposed on the sliding block; A counterweight roller shaft connected to the counterweight block; Set a buffer spring under the counterweight; An upper tension adjustment sensor and a lower tension adjustment sensor are arranged corresponding to the counterweight roller shaft, and a sensor sheet corresponding to the upper tension adjustment sensor and the lower tension adjustment sensor is arranged on the sliding block.

4. The thin film circuit roll material defect detection device according to claim 1, characterized in that: The unwinding mechanism includes: an unwinding bracket, an unwinding air shaft and an unwinding motor arranged on the unwinding bracket, an unwinding end film-tearing air shaft arranged below the unwinding air shaft, a first roller shaft arranged on one side of the unwinding air shaft and the unwinding end film-tearing air shaft, a material receiving platform arranged on one side of the pressure roller shaft, a second roller shaft arranged on the other side of the material receiving platform, a first deviation correction detection sensor arranged at one end of the second roller shaft, and a first deviation correction component arranged at the bottom of the unwinding bracket.

5. The thin film circuit roll material defect detection device according to claim 4, characterized in that: The material receiving platform is provided with a cutting groove, a pressing cylinder assembly and a pressing block.

6. The thin film circuit roll material defect detection device according to claim 4, characterized in that: The first deviation-correcting assembly includes a first sliding guide rail arranged at the bottom of the unwinding bracket, a first servo electric cylinder electrically connected to the first deviation-correcting sensor, and first limiting rubber pads arranged at both ends of the first sliding guide rail.

7. The thin film circuit roll defect detection device according to claim 1, characterized in that: The winding mechanism includes: a winding bracket, a winding air shaft arranged on the winding bracket, a film-tearing air shaft at the unwinding end arranged below the winding air shaft, a second deviation correction detection sensor arranged on one side of the winding air shaft, and a second deviation correction component arranged at the bottom of the winding bracket.

8. The thin film circuit roll defect detection device according to claim 1, characterized in that: An ion wind rod is correspondingly arranged on the detection drum to remove static electricity from the detection section of the film circuit coil material so that it will not be contaminated with dust during detection.

9. The thin film circuit roll defect detection device according to claim 1, characterized in that: It also includes a dust cleaning system, which includes an FFU fan filter unit and a posted dust removal sticker.

10. The thin film circuit roll defect detection device according to claim 1, characterized in that: The detection wheel mechanism includes a detection drum with a hollow interior, a rotating shaft arranged inside the detection drum, a fixed shaft sleeved on the outside of the rotating shaft, a first inner wheel and a second inner wheel arranged on the fixed shaft, and a drum cover connecting the rotating shaft and the detection drum, and the backlight source is arranged on the first inner wheel and the second inner wheel.

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