Surface scratch defect detection device for film production

Abstract

The invention relates to the technical field of film defect detection, and discloses a surface scratch defect detection device for film production, the surface scratch defect detection device comprises a detection table and material receiving tables symmetrically distributed on the detection table, the top of the detection table is also provided with a detector, and the front and rear side edges of the detection table are also provided with turning rollers; the exhaust hole is obliquely formed in the top face of the material receiving table, airflow is exhausted in the oblique direction of the exhaust hole to provide expanding thrust for the side edge of a film, an adjusting shaft is further rotationally installed on the material receiving table, and meanwhile an air channel is formed in the side end of the material receiving table; the air channel conveys air flow to the exhaust holes, and the air flow in the air channel further pushes turbine blades fixed to the shaft end of the adjusting shaft to rotate. According to the surface scratch defect detection device for thin film production, in the continuous conveying process of a thin film, various external forces are applied to the side edge of the thin film, so that the thin film is kept in a stable unfolding and positioning state during conveying, the accuracy of thin film defect detection is improved, and errors are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film defect detection, and specifically to a surface scratch defect detection device for thin film production. Background Art

[0002] In the production of thin films, to ensure the quality of the produced formed products and avoid the presence of defects, flaws or stains in the thin films due to defects in the production process, which may affect subsequent use, it is necessary to conduct spot checks on the produced thin films. In addition to detecting whether the size specifications of the formed products meet the requirements, it is also necessary to detect the surface scratch defects of the thin films. This can improve the quality of the finished products and also play a role in supervising the thin film production process, avoiding the continuous existence of local problems in the process and affecting the batch output of thin films.

[0003] Existing thin film defect detection generally uses machine vision processing. During the continuous conveying process of the thin film, continuous photographing and comparison detection are carried out on the scratch defects on it, and the automatic recognition of the machine is used to determine the damage of the thin film. At the same time, in order to improve the display resolution of the scratch defects, a supplementary lighting device is also synchronously equipped. By using the effect of light, obvious difference features of different brightness are formed at the scratch and defect positions of the thin film, so as to accelerate the detection efficiency of thin film scratches and defects. Although the existing thin film defect detection can largely complete the continuous detection of thin film surface scratches and has an accurate and good detection effect, there are also the following deficiencies:

[0004] Since the thin film needs to be continuously unrolled and rewound, and the surface scratches and defects of the thin film are detected during this process. However, if there are obstacles to the flat laying of local positions during the winding or conveying of the thin film, the thin film does not expand and unfold to its maximum length during the detection process, forming wrinkles and indentations in the middle section of the thin film, or due to the influence of conveying stability, there are folding creases at local positions of the thin film. This will lead to the existence of such problems as wrinkles, indentations and creases, resulting in misjudgment during the detection of the thin film, regarding what is not a scratch or flaw as a detected defect, and at the same time missing the detection of local defects that originally exist.

[0005] In view of the above problems, there is an urgent need to innovate and design on the basis of the original surface scratch defect detection device for thin film production. Summary of the Invention

[0006] The purpose of the present invention is to provide a surface scratch defect detection device for thin film production, so as to solve the problem that in the existing surface scratch defect detection device for thin film production, the thin film does not expand and unfold to its maximum length during the detection process, forming wrinkles, indentations or folding creases in the middle section of the thin film, which affects the accuracy of defect detection as mentioned in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A surface scratch defect detection device for film production, including a detection table and receiving tables symmetrically distributed thereon. A detector is also provided on the top of the detection table, and turning rollers are installed on the front and rear sides of the detection table;

[0008] It further includes: exhaust holes, which are inclinedly arranged on the top surface of the receiving table. The inclined direction of the exhaust holes gives an expansion thrust to the side of the film by the discharged air flow. An adjusting shaft is also rotatably installed on the receiving table. At the same time, an air duct is provided inside the edge of the receiving table; the air duct conveys air flow to the exhaust holes, and the air flow inside the air duct also drives the turbine blades fixed at the end of the adjusting shaft to rotate.

[0009] Preferably, the whole adjusting shaft is arranged in a triangular prism shape, and the edges of the triangular prism are arranged in an arc shape. And the rotation direction of the adjusting shaft is the same as the air flow discharging direction of the exhaust holes. The adjusting shaft gives an expansion thrust to the side of the film through frictional damping.

[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 edge of the adjusting shaft is above the top surface of the receiving table.

[0011] Preferably, the turbine blades are fixedly installed with the adjusting shaft. Among them, the adjusting shaft and the turbine blades both form a relative rotation structure with the receiving table, and the turbine blades are located at the middle position inside the air duct.

[0012] Preferably, a lamp board is also fixed on the detection table surface between the symmetrically distributed receiving tables. The top surface of the lamp board is above the top surface of the receiving table. The lamp board provides supplementary light for the continuously conveyed film from below.

[0013] Preferably, adjusting rollers are also provided on the front and rear sides of the detection table. The adjusting rollers adjust the tightness of the film during conveyor detection; at the same time, a cleaning roller is also provided on the turning roller on the feeding side of the detection table.

[0014] Preferably, exhaust cavities are also fixed on the left and right sides of the detection table. The exhaust cavities are located at the edges of the receiving tables, and an electrostatic shaft is installed in the middle of the exhaust cavities. The electrostatic shaft acts on the side of the film through electrostatic force to give an expansion tensile force.

[0015] Preferably, a "V"-shaped diversion housing is also fixed in the middle of the exhaust cavity. The "V"-shaped opening of the diversion housing is attached to the outer wall of the electrostatic shaft. At the same time, a damping roller is installed inside the diversion housing. The damping roller drives the electrostatic shaft to rotate through damping external force.

[0016] Preferably, an elastic liquid sac is embedded on the outer wall of the damping roller, and at the same time, the damping roller is driven to rotate by a motor.

[0017] Preferably, there is a gap reserved between the "V"-shaped top edge of the diversion housing and the outer wall of the static electricity shaft. At the same time, a fitting strip is fixed to the "V"-shaped bottom edge of the diversion housing, and a waste discharge port is provided at the connection between the fitting strip and the diversion housing.

[0018] The fitting strip is tangent to the outer wall of the static electricity shaft, and the tangent point between the fitting strip and the static electricity shaft is arranged in a damped extrusion manner with the damping roller.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: For this surface scratch defect detection device for film production, during the continuous conveying process of the film, various external forces are applied to the side edges of the film, so that the film maintains a stable unfolded and positioned state during conveying, improving the accuracy of film defect detection and reducing errors. The specific content is as follows:

[0020] 1. The detection device is arranged between the film unwinding and winding operation environments, so that the film continuously moves above the tabletop of the detection table. During this process, in order to prevent wrinkles, indentations, and crease folds from occurring in local positions during the conveying of the film, through the continuous air flow operation on the material receiving table and with the assistance of the continuously rotating adjustment shaft, a lateral pushing force is applied to the edge of the film, so that both sides of the film are subjected to a thrust force, forming an overall and central expansion under the action of external forces, thereby eliminating the influence of detection errors caused by the existence of wrinkles, indentations, and crease folds, etc. during the process of detecting defects.

[0021] Furthermore, in this technical solution, a matching static electricity shaft structure is also arranged on the side of the material receiving table. By using the electrostatic effect, firstly, when the above-mentioned film is given a lateral external thrust, an additional external tensile force can be further applied to keep the film in a flat and unfolded state from the middle to the edge. At the same time, under the action of the static electricity shaft, the residual dust and impurities at the edge of the film can be removed, avoiding the influence of the existence of impurities on defect detection.

[0022] 2. The damping roller structure is arranged. By using the damping roller and the elastic liquid sac thereon, under the action of the external force of its rotation, a continuous rotational external force can be applied to the static electricity shaft, so that during the rotation of the static electricity shaft, through the extrusion and tangency action of the damping roller with the fitting strip, the adhered impurities on the static electricity shaft are removed, thereby reducing the influence of impurity adsorption on the self-usage effect of the static electricity shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front structural schematic diagram of the present invention;

[0024] Figure 2 It is a top structural schematic diagram of the present invention;

[0025] Figure 3 It is a distribution structural schematic diagram of the lamp board on the detection table of the present invention;

[0026] Figure 4Schematic diagram of the installation and distribution structure of the material receiving table of the present invention;

[0027] Figure 5 Schematic diagram of the installation and distribution structure of the material receiving table and the static electricity shaft of the present invention;

[0028] Figure 6 Schematic diagram of the installation structure of the adjusting shaft and the turbine blade of the present invention;

[0029] Figure 7 Schematic diagram of the installation and distribution structure of the diversion housing and the static electricity shaft of the present invention;

[0030] Figure 8 Schematic diagram of the installation structure of the damping roller and the bonding strip of the present invention;

[0031] Figure 9 Schematic diagram of the adjusting roller structure of the present invention.

[0032] In the figure: 1, inspection table; 101, adjusting roller; 2, material receiving table; 3, detector; 4, turning roller; 401, cleaning roller; 5, lamp panel; 6, exhaust hole; 7, adjusting shaft; 8, air duct; 9, turbine blade; 10, exhaust cavity; 11, static electricity shaft; 12, diversion housing; 13, damping roller; 14, bonding strip. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1: Please refer to Figures 1-9 , the present invention provides a technical solution: A surface scratch defect detection device for film production includes an inspection table 1 and symmetrically distributed material receiving tables 2 thereon. A detector 3 is further provided on the top of the inspection table 1, and turning rollers 4 are installed on the front and rear side edges of the inspection table 1; the inspection table 1 is arranged between the film unwinding and winding operation environments. The film continuously moves in a flat manner on the tabletop of the inspection table 1. During the movement, the detector 3 performs scratch detection on the surface of the film. The use of the detector 3 is through optical detection, which is an application of existing conventional technical means. By using data comparison, the presence of scratch defect problems on the film is judged.

[0035] This technical solution also includes: an exhaust hole 6, which is inclinedly arranged on the top surface of the material receiving table 2. The inclined direction of the exhaust hole 6 gives an expansion thrust to the side of the film. A regulating shaft 7 is also rotatably installed on the material receiving table 2. At the same time, an air duct 8 is arranged inside the edge of the material receiving table 2. The air duct 8 conveys air to the exhaust hole 6, and the air flow inside the air duct 8 also drives the turbine blade 9 fixed to the shaft end of the regulating shaft 7 to rotate. In the above technical solution, the left and right side edges of the film are received by the material receiving table 2, and the film continuously moves on the material receiving table 2. During this process, through the inclined air flow discharge of the exhaust hole 6, the air flow of the exhaust hole 6 directly gives a lateral push to the edge position of the film. This push causes the film to expand from the middle to the side edge, thereby improving the expansion degree of the film laid flat on the table surface of the material receiving table 2 and reducing the film defect detection error caused by problems such as folding, creases, and dents on the film.

[0036] Further, the central axis of the regulating shaft 7 is parallel to the central axis of the material receiving table 2, and the highest point of the edge in the rotation trajectory of the edge of the regulating shaft 7 is above the top surface of the material receiving table 2. The turbine blade 9 is fixedly installed on the regulating shaft 7. Among them, the regulating shaft 7 and the turbine blade 9 both form a relative rotation structure with the material receiving table 2, and the turbine blade 9 is located at the middle position inside the air duct 8. In the above solution, the air flow of the exhaust hole 6 realizes the side expansion of the film. At the same time, the air flow drives the regulating shaft 7 to continuously rotate through the turbine blade 9. During the rotation of the regulating shaft 7, the rotational damping friction external force of the regulating shaft 7 is utilized to further achieve the effect of pushing the side expansion of the film. The structure and formation setting of the regulating shaft 7 enable it to increase the friction force of the contact between the two when the side of the film is pushed and expanded, and can also cause the edge of the film to fluctuate and shake, so that the impurities at the edge of the film can be cleaned to avoid impurities affecting its defect detection.

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

[0038] In the above technical application, for the supporting installation of the static electricity shaft 11, the continuous static electricity equipment works continuously. During the operation of the static electricity shaft 11, by utilizing the static electricity effect and its contact with the edge of the film, a lateral pulling force is applied to the side edge of the film. When combined with the pushing effects of the air flow and the damping external force, the lateral expansion of the film is further realized, enabling it to be laid flat stably as a whole, reducing the detection errors caused by folding, creasing, and dent problems during the detection process. At the same time, the structural setting of the damping roller 13 can stably drive the rotation of the static electricity shaft 11 during continuous operation and avoid affecting the static electricity on the static electricity shaft 11.

[0039] Meanwhile, in this solution, there is a gap reserved between the edge of the "V"-shaped top surface of the diversion housing 12 and the outer wall of the static electricity shaft 11. At the same time, a fitting strip 14 is fixed to the edge of the "V"-shaped bottom surface of the diversion housing 12, and a waste discharge port is provided at the connection between the fitting strip 14 and the diversion housing 12; the fitting strip 14 is tangent to the outer wall of the static electricity shaft 11, and the tangent point between the fitting strip 14 and the static electricity shaft 11 is set for damped extrusion with the damping roller 13; an elastic liquid sac is embedded in the outer wall of the damping roller 13, and the damping roller 13 is driven to rotate by a motor; when the damping roller 13 rotates the static electricity shaft 11 due to the damping external force, the tangency between the fitting strip 14 and the static electricity shaft 11 and the extrusion external force of the damping roller 13 on the tangent point can also be utilized, so that the impurities adsorbed by static electricity on the static electricity shaft 11 can be removed due to the extrusion and damping external forces, maintaining the continuous effective working state of the static electricity shaft 11 itself. At the same time, the removed impurities can also be discharged from the waste discharge port provided at the connection between the fitting strip 14 and the diversion housing 12 through the action of gravity and air flow to achieve waste discharge.

[0040] Embodiment 2: In the technical solution of the above Embodiment 1, in this embodiment, adjusting rollers 101 are further provided on the front and rear sides of the detection table 1. The adjusting rollers 101 adjust the tightness of the film during the conveying detection; at the same time, a cleaning roller 401 is also provided on the turning roller 4 on the feeding side of the detection table 1; in this technical solution, the function of the adjusting rollers 101 can adjust the tightness of the film when the film on the detection table 1 is continuously conveyed, so as to facilitate the lateral expansion and laying flat treatment of the film and improve the defect detection efficiency. The tightness adjustment of the adjusting rollers 101 is driven by an electric lifting device, which is convenient to operate. The functions of the turning roller 4 and the cleaning roller 401 can clean the impurities on the film before the film is conveyed for defect detection, avoiding the influence of the existence of impurities on the accuracy of the film defect detection.

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

Claims

1. A surface scratch defect detection device for film production, including a detection table (1) and receiving tables (2) symmetrically distributed thereon. A detector (3) is further provided on the top of the detection table (1), and steering rollers (4) are installed on the front and rear side edges of the detection table (1); It is characterized in that It further includes: Exhaust holes (6) are inclinedly arranged on the top surface of the receiving table (2). The inclination direction of the exhaust holes (6) gives an expansion thrust to the side edge of the film when the air flow is discharged. An adjusting shaft (7) is rotatably installed on the receiving table (2). At the same time, an air duct (8) is provided inside the edge of the receiving table (2); the air duct (8) conveys air flow to the exhaust holes (6), and the air flow inside the air duct (8) also drives the turbine blades (9) fixed to the end of the adjusting shaft (7) to rotate.

2. The surface scratch defect detection device for thin film production according to claim 1, wherein: The whole of the adjusting shaft (7) is arranged in a triangular prism shape, and the edges of the triangular prism are arranged in an arc shape. And the rotation direction of the adjusting shaft (7) is the same as the air flow discharge direction of the exhaust holes (6). The adjusting shaft (7) gives an expansion thrust to the side edge of the film through frictional damping.

3. The surface scratch defect detection device for film production according to claim 2, characterized in that: 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 rotation track of the edge of the adjusting shaft (7) is above the top surface of the receiving table (2).

4. A surface scratch defect detection device for film production according to claim 1, wherein: The turbine blades (9) are fixedly installed on the adjusting shaft (7). Among them, the adjusting shaft (7) and the turbine blades (9) both form a relative rotation structure with the receiving table (2), and the turbine blades (9) are located at the middle position inside the air duct (8).

5. A surface scratch defect detection device for film production according to any one of claims 1-4, characterized in that: A lamp board (5) is further fixed on the tabletop of the detection table (1) between the symmetrically distributed receiving tables (2). The top surface of the lamp board (5) is above the top surface of the receiving table (2). The lamp board (5) provides supplementary light for the continuously conveyed film from below.

6. The surface scratch defect detection device for film production according to claim 5, wherein: Adjusting rollers (101) are further provided on the front and rear sides of the detection table (1). The adjusting rollers (101) adjust the tightness of the film during conveyor detection; at the same time, a cleaning roller (401) is further provided on the steering roller (4) on the feeding side of the detection table (1).

7. The surface scratch defect detection device for film production according to claim 1, wherein: Exhaust cavities (10) are fixed on the left and right sides of the detection table (1). The exhaust cavities (10) are located at the edges of the receiving tables (2), and an electrostatic shaft (11) is further installed in the middle of the exhaust cavities (10). The electrostatic shaft (11) gives an expansion pulling force to the side edge of the film through electrostatic action.

8. A surface scratch defect detection device for thin film production according to claim 7, characterized in that: A "V”-shaped diversion housing (12) is further fixed in the middle of the exhaust cavity (10). The "V”-shaped opening of the diversion housing (12) is attached to the outer wall of the electrostatic shaft (11). At the same time, a damping roller (13) is installed inside the diversion housing (12). The damping roller (13) drives the electrostatic shaft (11) to rotate through damping external force.

9. The surface scratch defect detection device for film production according to claim 8, characterized in that: An elastic liquid sac is embedded in the outer wall of the damping roller (13), and at the same time, the damping roller (13) is driven to rotate by a motor.

10. A surface scratch defect detection device for thin film production according to claim 8 or 9, characterized in that: A gap is reserved between the edge of the "V”-shaped top surface of the diversion housing (12) and the outer wall of the electrostatic shaft (11). At the same time, a fitting strip (14) is fixed at the edge of the "V”-shaped bottom surface of the diversion housing (12). A waste discharge port is provided at the connection between the fitting strip (14) and the diversion housing (12); The fitting strip (14) is tangent to the outer wall of the static electricity shaft (11), and the tangent point of the fitting strip (14) and the static electricity shaft (11) is arranged in a damped extrusion manner with the damping roller (13).

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