A surface scratch defect detection device for film production

Abstract

The present application relates to the technical field of film flaw detection, and discloses a surface scratch defect detection device for film production, which comprises a detection table and a material receiving table symmetrically arranged on the detection table, and a detector is arranged on the top of the detection table, and steering rollers are arranged on the front and rear sides of the detection table; further comprising: an exhaust hole which is arranged on the top surface of the material receiving table in an inclined manner, the exhaust hole is arranged in an inclined manner, and the exhaust flow of the exhaust hole gives an expansion thrust to the side edge of the film; an adjusting shaft is rotatably arranged on the material receiving table, and a gas channel is arranged in the edge end of the material receiving table; the gas channel supplies the exhaust flow of the exhaust hole, and the exhaust flow in the gas channel further drives the turbine blades fixed to the shaft end of the adjusting shaft to rotate. The surface scratch defect detection device for film production gives various external forces to the side edge of the film during the continuous conveying process of the film, so that the film can maintain a stable and expanded positioning state during conveying, the accuracy of film defect detection is improved, and the error is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film flaw detection, in particular to a surface scratch defect detection device for film production. BACKGROUND

[0002] In order to ensure the quality of the formed product, avoid the existence of film flaws, defects or stains caused by defects in the production process, and affect the subsequent use, the output film needs to be sampled and inspected. In addition to detecting whether the size specifications of the formed product meet the requirements, the surface scratch defect detection of the film is also required. This can improve the quality of the finished product and also supervise the film production process to avoid the existence of local problems in the process and affect the batch output of the film.

[0003] The existing film defect detection generally uses machine vision processing to continuously photograph and compare the scratch defects on the film during continuous conveying, uses automatic recognition of the machine to realize film damage determination, and also uses a light supplementing device to form obvious different features of different brightness at the scratch and defect positions of the film by using light to improve the display resolution of the scratch defects and to speed up the efficiency of film scratch and defect detection. Although the existing film defect detection can greatly complete the continuous detection of film surface scratches and has good detection effect, it still has the following shortcomings:

[0004] Since the film needs to be continuously unwound and wound, the film surface scratch and defect detection is completed during this process. However, if there are local obstacles on the film during winding or conveying, the film is not fully stretched and expanded during detection, forming wrinkles and dents in the middle section of the film, or due to the influence of conveying stability, the film is folded at the local position, which will cause problems such as wrinkles, dents and folds, resulting in false positives during film detection, and the existing defects are detected as defects, and the local defects are missed.

[0005] In view of the above problems, it is necessary to make innovative design on the basis of the original surface scratch defect detection device for film production. SUMMARY

[0006] The purpose of the present application is to provide a surface scratch defect detection device for film production to solve the problem that the existing surface scratch defect detection device for film production cannot fully stretch and expand the film during detection, forming wrinkles and dents in the middle section of the film or folds, affecting the accuracy of defect detection.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a surface scratch defect detection device for film production, comprising a detection table and symmetrically distributed receiving tables on the detection table, and a detector is further arranged on the top of the detection table, and a deflection roller is further arranged on the front and rear sides of the detection table;

[0008] Further comprising: an exhaust hole obliquely arranged on the top surface of the receiving table, the exhaust hole discharges airflow in an oblique direction to give an expansion thrust to the side edge of the film, and an adjusting shaft is rotatably arranged on the receiving table, and a gas channel is arranged in the edge end of the receiving table; the gas channel delivers airflow to the exhaust hole, and the airflow in the gas channel further drives the rotation of turbine blades fixed to the shaft end of the adjusting shaft.

[0009] Preferably, the adjusting shaft is integrally arranged in a triangular prism shape, the edges of the triangular prism are arranged in a circular arc shape, the rotation direction of the adjusting shaft is the same as the airflow discharge direction of the exhaust hole, and the adjusting shaft gives an expansion thrust to the side edge of the film through damping friction.

[0010] Preferably, the central axis of the adjusting shaft is parallel to the central axis of the receiving table, and the highest point of the edge in the rotation track of the adjusting shaft is located above the top surface of the receiving table.

[0011] Preferably, the turbine blades are fixedly arranged with the adjusting shaft, wherein the adjusting shaft and the turbine blades are arranged in a relative rotation structure with the receiving table, and the turbine blades are located at a middle position in the gas channel.

[0012] Preferably, a lamp panel is further fixed on the table top of the detection table between the symmetrically distributed receiving tables, the top surface of the lamp panel is located above the top surface of the receiving table, and the lamp panel provides light from below for the continuously delivered film.

[0013] Preferably, adjusting rollers are further arranged on the front and rear sides of the detection table, the adjusting rollers adjust the tightness of the film in the conveying detection, and a cleaning roller is further arranged on the deflection roller on the feeding side of the detection table.

[0014] Preferably, an exhaust cavity is further fixed on the left and right sides of the detection table, the exhaust cavity is located at the edge of the receiving table, and a static shaft is further arranged in the middle of the exhaust cavity, the static shaft gives an expansion pulling force to the side edge of the film through static electricity.

[0015] Preferably, a "V"-shaped flow guide shell is further fixed in the middle of the exhaust cavity, the "V"-shaped opening of the flow guide shell is attached to the outer wall of the static shaft, and a damping roller is further arranged in the flow guide shell, the damping roller drives the rotation of the static shaft through damping external force.

[0016] Preferably, an elastic liquid bag is embedded in the outer wall of the damping roller, and the damping roller is driven to rotate by a motor.

[0017] Preferably, the "V" shaped top edge of the flow guide shell leaves a gap between the outer wall of the electrostatic shaft, and the "V" shaped bottom edge of the flow guide shell is fixed with a fitting strip, and the fitting strip and the flow guide shell are connected with a waste discharge port;

[0018] The fitting strip is tangent to the outer wall of the electrostatic shaft, and the tangent part of the fitting strip and the electrostatic shaft is arranged in a damping extrusion mode.

[0019] Compared with the prior art, the surface scratch defect detection device for film production has the advantages that various external forces are applied to the side edges of the film during continuous conveying of the film, so that the film maintains a stable and expanded positioning state during conveying, the accuracy of film defect detection is improved, and errors are reduced.

[0020] 1. The detection device is arranged between the film unwinding and winding operation environment, so that the film continuously moves above the table surface of the detection table. In this process, in order to prevent the film from being wrinkled, indented and creased during conveying, a continuous airflow operation on the receiving table is performed, and a continuously rotating adjusting shaft is used to apply a lateral pushing force to the edges of the film, so that the two sides of the film are subjected to a pushing force, and the whole and the middle part are expanded under the action of the external force, thereby eliminating the influence of detection errors caused by wrinkles, indentations and creases during defect detection.

[0021] Further, the matching electrostatic shaft structure is arranged on the side of the receiving table, which utilizes the electrostatic effect to further apply an external pulling force when the film is subjected to a lateral external pushing force, so as to maintain the flat and expanded state of the film from the middle to the edge. Meanwhile, the electrostatic shaft can remove the residual dust and impurities on the edge of the film, so as to avoid the influence of impurities on defect detection.

[0022] 2. The damping roller structure is arranged, which utilizes the damping roller and the elastic liquid bag thereon to apply a continuous rotating external force to the electrostatic shaft under the rotation of the damping roller, so that the electrostatic shaft is tangent to the fitting strip through the extrusion of the damping roller during rotation, and the adhered impurities on the electrostatic shaft are removed, thereby reducing the influence of impurity adsorption on the use effect of the electrostatic shaft. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front structure schematic view of the present application;

[0024] Figure 2 It is a top view structure schematic view of the present application;

[0025] Figure 3 It is a distribution structure schematic view of the lamp panel on the detection table of the present application;

[0026] Figure 4The installation distribution structure schematic diagram of the receiving table of the application;

[0027] Figure 5 The installation distribution structure schematic diagram of the receiving table and the electrostatic shaft of the application;

[0028] Figure 6 The installation structure schematic diagram of the adjusting shaft and the turbine blade of the application;

[0029] Figure 7 The installation distribution structure schematic diagram of the guide shell and the electrostatic shaft of the application;

[0030] Figure 8 The installation structure schematic diagram of the damping roller and the sticking strip of the application;

[0031] Figure 9 The adjusting roller structure schematic diagram of the application.

[0032] In the figure: 1, detection table; 101, adjusting roller; 2, receiving table; 3, detector; 4, deflection roller; 401, cleaning roller; 5, lamp plate; 6, exhaust hole; 7, adjusting shaft; 8, air duct; 9, turbine blade; 10, exhaust cavity; 11, electrostatic shaft; 12, guide shell; 13, damping roller; 14, sticking strip. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0034] Embodiment one: please refer to Figures 1-9 The application provides a technical solution: a surface scratch defect detection device for thin film production, which comprises a detection table 1 and symmetrically distributed receiving tables 2 on the detection table 1, and a detector 3 is further arranged on the top of the detection table 1, and deflection rollers 4 are further arranged on the front and rear side edges of the detection table 1; the detection table 1 is arranged between the unwinding and winding operation environments of the thin film, the thin film is continuously moved in a flat laying mode on the tabletop of the detection table 1, and the detector 3 detects the scratch on the surface of the thin film during the movement; the use of the detector 3 is through optical detection, which belongs to the application of the existing conventional technical means, and the existence of the scratch defect problem on the thin film is judged by data comparison.

[0035] This technical solution also includes: an exhaust port 6, which is inclinedly set on the top surface of the receiving platform 2. The airflow from the inclined exhaust port 6 provides a thrust for the lateral expansion of the film. An adjusting shaft 7 is also rotatably mounted on the receiving platform 2. At the same time, an air passage 8 is provided inside the edge of the receiving platform 2. The air passage 8 delivers airflow to the exhaust port 6, and the airflow inside the air passage 8 also drives the turbine blades 9 fixed at the shaft end of the adjusting shaft 7 to rotate. In the above technical solution, the receiving platform 2 receives the left and right edges of the film. The film moves continuously on the receiving platform 2. During this process, the airflow is discharged through the inclined exhaust port 6. The airflow from the exhaust port 6 directly provides a lateral push to the edge of the film. This push causes the film to unfold from the middle to the side edge, thereby improving the expansion degree of the film laid flat on the receiving platform 2 and reducing the detection error of film defects caused by folds, creases and dents.

[0036] Furthermore, the central axis of the adjusting shaft 7 is parallel to the central axis of the receiving platform 2, and the highest point of the edge in the rotation trajectory of the adjusting shaft 7 is located above the top surface of the receiving platform 2; the turbine blade 9 is fixedly installed with the adjusting shaft 7, wherein the adjusting shaft 7 and the turbine blade 9 and the receiving platform 2 both form a relative rotation structure, and the turbine blade 9 is located in the middle section inside the air passage 8; in the above scheme, the airflow of the exhaust port 6 realizes the lateral expansion of the film, and at the same time, the airflow drives the adjusting shaft 7 to rotate continuously through the turbine blade 9. During the rotation of the adjusting shaft 7, the external force of the rotation damping friction of the adjusting shaft 7 is used to further achieve the effect of pushing the lateral expansion of the film. The structure and formation of the adjusting shaft 7 can improve the friction between the two when the film is pushed and expanded, and can also realize the edge undulation and shaking of the film, so that impurities at the edge of the film can be cleaned and impurities can be avoided from affecting the defect detection.

[0037] Based on the above technical solution, in this solution, exhaust chambers 10 are fixed on the left and right sides of the detection platform 1. The exhaust chambers 10 are located at the edge of the receiving platform 2, and an electrostatic shaft 11 is installed in the middle of the exhaust chamber 10. The electrostatic shaft 11 applies an expansion tension to the side of the film through electrostatic action. A "V"-shaped flow guide shell 12 is also fixed in the middle of the exhaust chamber 10. The "V"-shaped opening of the flow guide shell 12 is attached to the outer wall of the electrostatic shaft 11. At the same time, a damping roller 13 is installed inside the flow guide shell 12. The damping roller 13 drives the electrostatic shaft 11 to rotate through damping external force. An elastic liquid bladder is embedded in the outer wall of the damping roller 13. The damping roller 13 is driven to rotate by a motor.

[0038] The above-mentioned technology, with the matching installation of the electrostatic shaft 11, ensures the continuous operation of the electrostatic equipment. During the operation of the electrostatic shaft 11, the electrostatic effect and its contact with the edge of the film create a lateral pulling force on the side edge of the film. This, combined with the pushing effect of airflow and damping external force, further achieves the lateral expansion of the film, making it flat and stable overall. This reduces the detection errors caused by folds, wrinkles, and dents during the inspection process. At the same time, the structure of the damping roller 13 can stably drive the electrostatic shaft 11 to rotate during continuous operation and avoid the influence of static electricity on the electrostatic shaft 11.

[0039] In this design, a gap is pre-reserved between the V-shaped top edge of the flow guide housing 12 and the outer wall of the electrostatic shaft 11. A bonding strip 14 is fixed to the V-shaped bottom edge of the flow guide housing 12, and a waste outlet is provided at the connection between the bonding strip 14 and the flow guide housing 12. The bonding strip 14 is tangent to the outer wall of the electrostatic shaft 11, and the tangent point between the bonding strip 14 and the electrostatic shaft 11 is damped and pressed against the damping roller 13. An elastic liquid bladder is embedded in the outer wall of the damping roller 13, and the damping roller 13 is driven by a motor to rotate. When the damping roller 13 drives the electrostatic shaft 11 to rotate due to the damping external force, the tangency between the bonding strip 14 and the electrostatic shaft 11, as well as the squeezing external force of the damping roller 13 at the tangent point, can remove the impurities electrostatically adsorbed on the electrostatic shaft 11 due to the squeezing and damping external force, thus maintaining the continuous and effective working state of the electrostatic shaft 11. At the same time, the removed impurities can also be discharged from the waste discharge port provided at the connection between the bonding strip 14 and the guide housing 12 through gravity and airflow, thus realizing waste discharge.

[0040] Example 2: In the technical solution of Example 1 above, this example further provides that the front and rear sides of the inspection table 1 are provided with adjusting rollers 101, which adjust the tension of the film during the conveying inspection; at the same time, a cleaning roller 401 is provided on the guide roller 4 on the feeding side of the inspection table 1; in this technical solution, the function of the adjusting roller 101 is to adjust the tension of the film when the film on the inspection table 1 is continuously conveyed, thereby facilitating the lateral expansion and flattening of the film and improving the defect detection efficiency. The tension adjustment of the adjusting roller 101 is driven by an electric lifting device, which is convenient to operate. The function of the guide roller 4 and the cleaning roller 401 is to clean the impurities on the film before the defect detection is performed, so as to avoid the presence of impurities affecting the accuracy of the defect detection of the film.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface scratch defect detection device for film production, comprising a detection table (1) and symmetrically distributed receiving tables (2) thereon, and a detector (3) is further arranged on the top of the detection table (1), and steering rollers (4) are further arranged on the front and rear sides of the detection table (1); characterized in that Further comprising: An exhaust hole (6) is obliquely arranged on the top surface of the receiving table (2), the exhaust direction of the exhaust hole (6) gives the film side edge an expansion thrust, an adjusting shaft (7) is further rotatably arranged on the receiving table (2), and a gas channel (8) is further arranged in the edge end of the receiving table (2); the gas channel (8) supplies the exhaust hole (6) with airflow, and the airflow in the gas channel (8) further drives the turbine blades (9) fixed on the shaft end of the adjusting shaft (7) to rotate; the adjusting shaft (7) is arranged as a triangular prism as a whole, the edges of the triangular prism are arranged as arcs, the rotating direction of the adjusting shaft (7) is the same as the exhaust direction of the exhaust hole (6), and the adjusting shaft (7) gives the film side edge an expansion thrust through damping friction; The central axis of the adjusting shaft (7) is parallel to the central axis of the receiving table (2), and the highest point of the edge in the rotating track of the adjusting shaft (7) is above the top surface of the receiving table (2); the turbine blades (9) are fixedly arranged on the adjusting shaft (7), and the adjusting shaft (7) and the turbine blades (9) are rotatably arranged on the receiving table (2), and the turbine blades (9) are located at the middle position in the gas channel (8).

2. The surface scratch defect detection apparatus for thin film production according to claim 1, characterized by: The top surface of the lamp panel (5) is above the top surface of the receiving table (2), and the lamp panel (5) supplies light from below for the continuously conveyed film.

3. The surface scratch defect detecting apparatus for thin film production according to claim 2, characterized by: The front and rear sides of the detection table (1) are further provided with adjusting rollers (101) for adjusting the tightness of the film in the conveying detection; and the steering roller (4) on the feeding side of the detection table (1) is further provided with a cleaning roller (401).

4. The surface scratch defect detection apparatus for thin film production according to claim 1, characterized by: The left and right sides of the detection table (1) are further provided with exhaust cavities (10), which are located at the edges of the receiving table (2), and the middle part of the exhaust cavity (10) is further provided with an electrostatic shaft (11), which applies an expansion tension to the film side edge through electrostatic action.

5. The surface scratch defect detecting apparatus for thin film production according to claim 4, characterized by: The middle part of the exhaust cavity (10) is further provided with a "V"-shaped flow guide shell (12), the "V"-shaped opening of the flow guide shell (12) is attached to the outer wall of the electrostatic shaft (11), and the flow guide shell (12) is further provided with a damping roller (13) inside, which drives the electrostatic shaft (11) to rotate through damping external force.

6. The surface scratch defect detecting apparatus for thin film production according to claim 5, characterized by: The outer wall of the damping roller (13) is embedded with an elastic liquid bag, and the damping roller (13) is driven to rotate by a motor.

7. The surface scratch defect detection apparatus for thin film production according to claim 5 or 6, characterized by: The "V"-shaped top edge of the flow guide shell (12) and the outer wall of the electrostatic shaft (11) are provided with apertures, and the "V"-shaped bottom edge of the flow guide shell (12) is fixedly provided with a fitting strip (14), and the connection between the fitting strip (14) and the flow guide shell (12) is provided with a waste discharge port; The fitting strip (14) is tangent to the outer wall of the electrostatic shaft (11), and the tangent part of the fitting strip (14) and the electrostatic shaft (11) is in damping extrusion with the damping roller (13).

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