Film rewinding machine

Abstract

The utility model discloses a film rewinding machine, which relates to the technical field of film detection and comprises a frame. The left end and the right end of the unwinding roller and the left end and the right end of the winding roller are rotationally connected to the rack; the conveying belt is arranged between the unwinding roller and the winding roller, the conveying belt is rotatably arranged on the rack, the upper surface of the conveying belt is used for winding a thin film, the supporting plate is arranged on the rack, and the supporting plate is used for supporting part of the thin film wound on the conveying belt through the conveying belt so that the part of the thin film wound on the conveying belt can be kept flat; the visual detection device is arranged on the rack, and the visual detection device is arranged above the conveying belt; and the tension adjusting device is arranged on the rack, and the tension adjusting device is used for adjusting the tension force of the thin film between the unwinding roller and the winding roller. And the supporting plate plays a role in supporting and shaping, so that part of the film below the visual detection device is prevented from drooping, and the accuracy of film defect detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film detection, and particularly relates to a film rewinder. Background Art

[0002] A film rewinder is a device specifically used for detecting and rewinding films. Rewinding refers to the process of unwinding a wound film and winding it again. A film rewinder usually includes a vision detection device. During the rewinding process of the film roll, the vision detection device can take pictures and perform image processing on a part of the film under the vision detection device to detect defects on the film surface, so that the operator can subsequently process and remove the defects on the film. In the prior art, a part of the film under the vision detection device may sag or wrinkle under its own gravity or external force, resulting in unevenness of a part of the film. The uneven film will cause the image captured by the vision detection device to be distorted, thereby reducing the accuracy of film detection. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a film rewinder, which is beneficial to improving the accuracy of film detection.

[0004] The film rewinder according to an embodiment of the utility model includes:

[0005] A frame;

[0006] An unwinding roller and a winding roller, both left and right ends of the unwinding roller and the winding roller are rotatably connected to the frame. The unwinding roller is used for unwinding the film, and the winding roller is used for winding the film;

[0007] A conveyor belt and a support plate. The conveyor belt is arranged between the unwinding roller and the winding roller. The conveyor belt is rotatably arranged on the frame. The upper surface of the upper half of the conveyor belt is used for the film to be wound around. The support plate is connected to the frame. The support plate is arranged below the upper half of the conveyor belt. The support plate is used for supporting the upper half of the conveyor belt, so that the film wound around the upper half of the conveyor belt can be kept flat;

[0008] A vision detection device, the vision detection device is connected to the frame. The vision detection device is arranged above the conveyor belt. The vision detection device is used for detecting defects on the film wound around the conveyor belt;

[0009] A tension adjusting device, the tension adjusting device is arranged on the frame. The tension adjusting device is used for adjusting the tension of the film between the unwinding roller and the winding roller.

[0010] At least has the following beneficial effects:

[0011] When it is necessary to detect and rewind the film roll, the operator can put the film roll on the unwinding roller. The unwinding roller rotates to unwind the film, and the film is wound around the winding roller, so that the film can move between the unwinding roller and the winding roller. A rotatable conveyor belt is provided on the frame. The unwound film is wound around the upper surface of the conveyor belt. The visual inspection device is arranged above the conveyor belt. A support plate is arranged within the area surrounded by the conveyor belt. The support plate can be in contact with the inner side surface of the conveyor belt, so that the support plate can support a part of the film wound around the conveyor belt through the conveyor belt. The support plate plays a supporting role, effectively preventing the film wound around the conveyor belt from sagging due to its own gravity or other external forces, that is, preventing the film below the visual inspection device from sagging, so that the image captured by the visual inspection device will not be distorted, which is beneficial to improving the accuracy of film detection and discovering defects as much as possible. On the other hand, the tension adjusting device can adjust the tension or tension state of the film between the unwinding roller and the winding roller, so that the unwound film can always be in an appropriate tension, preventing the part of the film below the visual inspection device from sagging due to relaxation, which is also beneficial to improving the accuracy of film detection.

[0012] The film rewinder according to an embodiment of the present invention further includes a sliding seat and a fastener. The sliding seat is arranged below the visual inspection device. The sliding seat is slidably connected to the frame in the front-rear direction. The conveyor belt is rotatably arranged on the sliding seat. The support plate is connected to the sliding seat. The fastener is used to fix the sliding seat to the frame.

[0013] In the film rewinder according to an embodiment of the present invention, the fastener is a bolt. A guiding groove is formed on the frame. The length direction of the guiding groove is parallel to the front-rear direction. A threaded hole is formed on the sliding seat. The bolt passes through the guiding groove and is threadedly connected to the inner wall of the threaded hole. The bolt can slide in the guiding groove in the front-rear direction. The nut end of the bolt can press against the frame to fix the sliding seat to the frame.

[0014] The film rewinder according to an embodiment of the present invention further includes a first traction roller and a second traction roller. The left and right ends of the first traction roller and the second traction roller are rotatably connected to the frame. The first traction roller is arranged between the conveyor belt and the unwinding roller. The first traction roller is used for the film to be wound around. The second traction roller is arranged between the conveyor belt and the winding roller. The second traction roller is used for the film to be wound around.

[0015] According to the film rewinder of the embodiment of the present utility model, the tension adjusting device includes an adjusting roller and a first linear driving assembly. The first linear driving assembly is arranged on the frame. The adjusting roller is arranged between the conveyor belt and the unwinding roller. The left and right ends of the adjusting roller are rotatably connected to the output ends of the first linear driving assembly respectively. The adjusting roller is used for the film to wind around it. The first linear driving assembly is used to adjust the relative positions between the adjusting roller, the conveyor belt and the unwinding roller, so as to adjust the tension of the film wound around the adjusting roller.

[0016] According to the film rewinder of the embodiment of the present utility model, the first linear driving assembly includes two sliding plates and two cylinders. The two sliding plates are slidably connected to the frame in the up and down direction respectively. The left and right ends of the adjusting roller are rotatably connected to the two sliding plates respectively. The cylinder bodies of the two cylinders are connected to the frame, and the piston rods of the two cylinders are connected to the two sliding plates respectively.

[0017] According to the film rewinder of the embodiment of the present utility model, it further includes an ion wind generating device. The ion wind generating device is arranged on the frame and between the conveyor belt and the unwinding roller. The ion wind generating device is used to blow the gas carrying positive and negative ions to the film between the conveyor belt and the unwinding roller, so as to blow away the dust attached to the surface of the film.

[0018] According to the film rewinder of the embodiment of the present utility model, it further includes a first lighting member and a second lighting member. The first lighting member and the second lighting member are both arranged on the frame. The first lighting member and the second lighting member are respectively arranged on the front and rear sides of the conveyor belt. The first lighting member and the second lighting member are both used to illuminate the film wound around the conveyor belt.

[0019] According to the film rewinder of the embodiment of the present utility model, the first lighting member and the second lighting member are both inclined, and the included angle formed by the first lighting member and the second lighting member faces the conveyor belt.

[0020] According to the film rewinder of the embodiment of the present utility model, the unwinding roller is a first expandable and contractible roller, and the winding roller is a second expandable and contractible roller.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0022] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0023] Figure 1Schematic diagram of the structure of the film rewinder and the film in the embodiment of the present utility model;

[0024] Figure 2 Schematic diagram of the structure of the film rewinder in the embodiment of the present utility model;

[0025] Figure 3 It is Figure 2 Partial enlarged schematic diagram at position A in

[0026] Figure 4 Schematic diagram of the structure of the support plate, conveyor belt and sliding seat in the film rewinder in the embodiment of the present utility model;

[0027] Figure 5 Schematic diagram of the structure of the film rewinder from another perspective in the embodiment of the present utility model;

[0028] Figure 6 Schematic diagram of the film running in the film rewinder in the embodiment of the present utility model;

[0029] Reference numerals:

[0030] Frame 100; Unwinding roller 110; Rewinding roller 120; First traction roller 130; Second traction roller 140; Sliding seat 150; Fastener 151; Conveyor belt 160; Support plate 161; Guide groove 170; First lighting member 180; Second lighting member 190;

[0031] Tension adjusting device 200; Cylinder 210; Slide plate 220; Adjusting roller 230;

[0032] Ion wind generating device 300;

[0033] Visual inspection device 400. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0036] In the description of the present utility model, "a plurality of" means more than two. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0037] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0038] Reference Figures 1 to 4 , a film rewinder according to an embodiment of the present utility model includes:

[0039] A frame 100;

[0040] An unwinding roller 110 and a winding roller 120. The left and right ends of the unwinding roller 110 and the winding roller 120 are rotatably connected to the frame 100. The unwinding roller 110 is used for unwinding the film, and the winding roller 120 is used for winding the film;

[0041] A conveyor belt 160 and a support plate 161. The conveyor belt 160 is arranged between the unwinding roller 110 and the winding roller 120. The conveyor belt 160 is rotatably arranged on the frame 100. The upper surface of the upper half of the conveyor belt 160 is used for the film to be wound around. The support plate 161 is connected to the frame 100. The support plate 161 is arranged below the upper half of the conveyor belt 160. The support plate 161 is used for supporting the upper half of the conveyor belt 160 so that the film wound around the upper half of the conveyor belt 160 can be kept flat;

[0042] A visual inspection device 400;. The visual inspection device 400; is connected to the frame 100. The visual inspection device 400; is arranged above the conveyor belt 160. The visual inspection device 400; is used for detecting defects on the film wound around the conveyor belt 160;

[0043] A tension adjusting device 200. The tension adjusting device 200 is arranged on the frame 100. The tension adjusting device 200 is used for adjusting the tension of the film between the unwinding roller 110 and the winding roller 120.

[0044] It can be understood that when it is necessary to detect and rewind the film roll, the operator can put the film roll on the unwinding roller 110. The unwinding roller 110 rotates to unwind the film, and the film is wound around the winding roller 120, so that the film can move between the unwinding roller 110 and the winding roller 120. A rotatable conveyor belt 160 is provided on the frame 100, and the unwound film is wound around the upper surface of the conveyor belt 160. The visual inspection device 400 is arranged above the conveyor belt 160. A support plate 161 is provided within the area surrounded by the conveyor belt 160. The support plate 161 can be in contact with the inner side surface of the conveyor belt 160, so that the support plate 161 can support a part of the film wound around the conveyor belt 160 through the conveyor belt 160. The support plate 161 plays a supporting role, effectively preventing the film wound around the conveyor belt 160 from sagging due to its own gravity or other external forces, that is, preventing the film below the visual inspection device 400 from sagging, so that the image captured by the visual inspection device 400 will not be distorted, which is conducive to improving the accuracy of film detection and discovering defects as much as possible. On the other hand, the tension adjusting device 200 can adjust the tension or tension state of the film between the unwinding roller 110 and the winding roller 120, so that the unwound film can always be in an appropriate tension force, preventing the part of the film below the visual inspection device 400 from sagging due to relaxation, which is also conducive to improving the accuracy of film detection.

[0045] Reference Figure 4 and Figure 5 , the film rewinder further includes a sliding seat 150 and a fastener 151. The sliding seat 150 is arranged below the visual inspection device 400. The sliding seat 150 is slidably connected to the frame 100 in the front-back direction. The conveyor belt 160 is rotatably arranged on the sliding seat 150. The support plate 161 is connected to the sliding seat 150. The fastener 151 is used to fix the sliding seat 150 to the frame 100. The fastener 151 is a bolt. A guide groove 170 is formed on the frame 100. The length direction of the guide groove 170 is parallel to the front-back direction. A threaded hole is formed on the sliding seat 150. The bolt passes through the guide groove 170 and is threadedly connected to the inner wall of the threaded hole. The bolt can slide in the guide groove 170 in the front-back direction. The nut end of the bolt can press against the frame 100 to fix the sliding seat 150 to the frame 100.

[0046] It can be understood that by moving the carriage 150 and the conveyor belt 160 forward and backward, the position between the part of the film wound around the conveyor belt 160 and the visual inspection device 400 is adjusted, so as to ensure that the visual inspection device 400 can accurately capture the part of the film wound around the conveyor belt 160. When it is necessary to adjust the positions of the carriage 150 and the conveyor belt 160, the operator can loosen the bolts to make the nuts of the bolts disengage from the chassis of the frame 100, and then the carriage 150 and the conveyor belt 160 can be moved forward and backward, thereby adjusting the position between the part of the film wound around the conveyor belt 160 and the visual inspection device 400. After the position adjustment is completed, the operator can tighten the bolts again so that the nuts of the bolts press against the frame 100, which can fix the positions of the carriage 150 and the conveyor belt 160 on the frame 100, effectively preventing the carriage 150 from moving during the rewinding process.

[0047] As an embodiment of the present utility model, the film rewinder further includes two first slide rails and two first sliders. The two first slide rails are both parallel to the front-back direction, and the two first slide rails are both arranged on the frame 100. The two first sliders are respectively arranged on the left and right sides of the carriage 150, and the two first sliders are respectively slidably connected to the two first slide rails. Specifically, the film rewinder further includes a rotation driving assembly (not shown in the figure) and two transmission rollers. The left and right ends of the two transmission rollers are rotatably connected to the carriage 150, the conveyor belt 160 is wound around the two transmission rollers, and the rotation driving assembly is used to drive one of the transmission rollers to rotate so that the two transmission rollers rotate synchronously, and then the two transmission rollers drive the conveyor belt 160 to rotate. The rotation driving assembly can be a first motor.

[0048] Reference Figure 6 Referring to, the film rewinder further includes a first traction roller 130 and a second traction roller 140. The left and right ends of the first traction roller 130 and the second traction roller 140 are rotatably connected to the frame 100. The first traction roller 130 is arranged between the conveyor belt 160 and the unwinding roller 110, and the first traction roller 130 is used for winding the film. The second traction roller 140 is arranged between the conveyor belt 160 and the winding roller 120, and the second traction roller 140 is used for winding the film. It can be understood that the first traction roller 130 and the second traction roller 140 are respectively arranged on the front and back sides of the conveyor belt 160, and the first traction roller 130 and the second traction roller 140 are both used for winding the film. The first traction roller 130 and the second traction roller 140 play a role in tensioning the film, and the first traction roller 130 and the second traction roller 140 are both arranged below the conveyor belt 160, so that the part of the film wound around the conveyor belt 160 can be closely attached to the conveyor belt 160, which is beneficial to keeping the film on the conveyor belt 160 flat.

[0049] Reference Figure 2 and Figure 3, the tension adjusting device 200 includes an adjusting roller 230 and a first linear driving assembly. The first linear driving assembly is arranged on the frame 100. The adjusting roller 230 is arranged between the conveyor belt 160 and the unwinding roller 110. The left and right ends of the adjusting roller 230 are rotatably connected to the output end of the first linear driving assembly. The adjusting roller 230 is used for winding the film. The first linear driving assembly is used to adjust the relative positions between the adjusting roller 230, the conveyor belt 160 and the unwinding roller 110, so as to adjust the tension of the film wound on the adjusting roller 230. The first linear driving assembly includes two sliding plates 220 and two cylinders 210. The two sliding plates 220 are slidably connected to the frame 100 in the up and down direction. The left and right ends of the adjusting roller 230 are respectively rotatably connected to the two sliding plates 220. The cylinder bodies of the two cylinders 210 are connected to the frame 100, and the piston rods of the two cylinders 210 are respectively connected to the two sliding plates 220.

[0050] As an embodiment of the present invention, the tension adjusting device 200 further includes four second slide rails and four second sliders. The four second slide rails are all parallel to the up and down direction and are arranged on the frame 100. Two of the second sliders are arranged on one of the sliding plates 220, and the other two second sliders are arranged on the other sliding plate 220. The four second sliders are respectively slidably connected to the four second slide rails.

[0051] Reference Figure 5 , the film rewinder includes two tension adjusting devices 200. One of the tension adjusting devices 200 is arranged between the unwinding roller 110 and the first traction roller 130, and the other tension adjusting device 200 is arranged between the winding roller 120 and the second traction roller 140, which will not be further elaborated here.

[0052] As an embodiment of the present utility model, the tension adjusting device 200 further includes a tension detection and control component. A preset tension value range is set in the tension detection and control component. When the tension of the film is within the preset tension value range, it means that the current tension of the film is appropriate. When the tension detection and control component detects that the tension of the film is higher than the preset tension value range, the tension detection and control component controls the piston rods of the two cylinders 210 to contract. The piston rods of the two cylinders 210 drive the two sliding plates 220 to rise respectively, so that the adjusting roller 230 moves away from the unwinding roller 110, reducing the pressing force between the adjusting roller 230 and the film, and further reducing the tension of the film, so that the tension of the film can be reduced to within the preset tension value range. When the tension detection and control component detects that the tension of the film is lower than the preset tension value range, the tension detection and control component controls the piston rods of the two cylinders 210 to extend. The piston rods of the two cylinders 210 drive the two sliding plates 220 to descend respectively, so that the adjusting roller 230 approaches the unwinding roller 110, increasing the pressing force between the adjusting roller 230 and the film, and further increasing the tension of the film, so that the tension of the film can be increased to within the preset tension value range. Specifically, in the present utility model, the cylinder 210 is a multi-stage stroke cylinder 210.

[0053] Reference Figure 1 and Figure 6 The film rewinder further includes an ion wind generating device 300. The ion wind generating device 300 is arranged on the frame 100. The ion wind generating device 300 is arranged between the conveyor belt 160 and the unwinding roller 110. The ion wind generating device 300 is used to blow the gas carrying positive and negative ions towards a part of the film between the conveyor belt 160 and the unwinding roller 110, so as to blow off the dust attached to the surface of the film. It should be explained that during the production and processing of the film, operations such as friction and peeling will generate static electricity. These static charges will attract and capture dust particles in the air, making them adhere to the surface of the film. During the detection process of the visual detection device 400, the dust particles attached to the film may be misidentified as defects on the film surface, resulting in misjudgment of the visual detection device 400.

[0054] It can be understood that the ion wind generating device 300 generates positive and negative ions and blows the gas carrying positive and negative ions towards the film. The positive and negative ions in the gas can neutralize the static electricity on the film, making the dust particles adsorbed by static electricity lose their adsorption force, and then the dust on the film can be blown off. The ion wind generating device 300 is arranged between the unwinding roller 110 and the visual detection device 400, so that the film can move to the visual detection device 400 only after passing through the ion wind generating device 300. The ion wind generating device 300 can remove the dust on the film, avoiding the visual detection device 400 from identifying the dust on the film as a defect, which is beneficial to improving the detection accuracy of the visual detection device 400.

[0055] In the present utility model, the ion wind generating device 300 includes a housing, an ionization head, and a blower. An air outlet is formed on the housing, and the air outlet faces the film between the conveyor belt 160 and the unwind roller 110. The ionization head is disposed at the air outlet, and the air outlet end of the blower is communicated with the housing. It can be understood that the ionization head is composed of high-voltage electrodes, and the electrodes generate a strong electric field under the action of high voltage, ionizing the air molecules in the housing to form positive and negative ions. After the blower is started, it blows air into the housing, and the blown air enters the housing and then blows out from the air outlet, so that the blown gas carries positive and negative ions. The ion wind generating device 300 is a common ion wind device, and will not be further described here.

[0056] Reference Figure 2 and Figure 6 Moreover, the film rewinder further includes a first lighting member 180 and a second lighting member 190. Both the first lighting member 180 and the second lighting member 190 are disposed on the frame 100. The first lighting member 180 and the second lighting member 190 are respectively disposed on the front and rear sides of the conveyor belt 160, and both the first lighting member 180 and the second lighting member 190 are used to illuminate the part of the film wound around the conveyor belt 160. Both the first lighting member 180 and the second lighting member 190 are inclined, and the included angle formed by the first lighting member 180 and the second lighting member 190 faces the conveyor belt 160. It can be understood that the first lighting member 180 and the second lighting member 190 can illuminate the part of the film wound around the conveyor belt 160, and the first lighting member 180 and the second lighting member 190 can reduce the shadows generated by a single light source, ensuring that each part of the surface of the measured film is evenly illuminated, which can improve the image clarity of the detected film, making small defects and flaws more obvious, and thus being beneficial to improving the visual inspection device 400; the detection accuracy. On the other hand, both the first lighting member 180 and the second lighting member 190 are inclined, which can reduce the interference of the reflected light on the visual inspection device 400;, and the inclined light source can highlight the minute features on the film surface, such as dents, protrusions, scratches, etc., making these details more obvious in the detection image, which is beneficial to improving the visual inspection device 400; the detection accuracy.

[0057] In the embodiment of the present utility model, the visual inspection device 400; includes a line scan camera assembly. The line scan camera is a camera specifically used for industrial visual inspection, and it obtains images by scanning the surface of an object line by line. The line scan camera is installed at a fixed position, and the detected film continuously moves below the line scan camera. The line scan camera captures images line by line when the film moves, and each time it captures the image data of one line of the film. Then, the image processing system stitches these scanned lines into a complete two-dimensional image and analyzes the situation on the surface of the film in real time, so as to detect and identify the defects on the surface of the film.

[0058] As an embodiment of the utility model, the unwinding roller 110 is a first expansion and contraction roller, and the winding roller 120 is a second expansion and contraction roller. The expansion and contraction roller is a roller whose diameter can be adjusted to fix the film roll. In the utility model, after the film is unwound from the unwinding roller 110, it is sequentially wound on the adjusting roller 230, the first traction roller 130, the conveyor belt 160, the second traction roller 140 and the winding roller 120, and the winding roller 120 winds up the film. On the other hand, one end of the first expansion and contraction roller and the second expansion and contraction roller are both rotatably connected to the frame 100 through a bearing seat, and the other ends of the first expansion and contraction roller and the second expansion and contraction roller are both rotatably and detachably connected to the frame 100. When it is necessary to put the film roll into the first expansion and contraction roller, the operator can remove the other end of the first expansion and contraction roller from the frame 100, and then swing the first expansion and contraction roller so that the other end of the first expansion and contraction roller can swing relative to the bearing seat, so that the operator can put the film roll on the first expansion and contraction roller. After the film roll is put on, the operator swings the first expansion and contraction roller and then reinstalls one end of the first expansion and contraction roller on the frame 100, and the first expansion and contraction roller can be rotated again. Similarly, when it is necessary to remove the film roll from the second expansion and contraction roller after winding, the operator can remove the other end of the second expansion and contraction roller and remove the film roll from the second expansion and contraction roller, which will not be further described here. As an embodiment of the utility model, it also includes two second motors (not shown in the figure), and the output ends of the two second motors are respectively connected to the first expansion and contraction roller and the second expansion and contraction roller, so as to drive the first expansion and contraction roller and the second expansion and contraction roller to rotate.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A film rewinding machine, characterized in that: include: frame; An unwinding roller and a winding roller, the left and right ends of the unwinding roller and the winding roller are rotatably connected to the frame, the unwinding roller is used for unwinding the film, and the winding roller is used for winding the film; A conveyor belt and a support plate, wherein the conveyor belt is arranged between the unwinding roller and the winding roller, the conveyor belt is rotatably arranged on the frame, the upper surface of the upper half of the conveyor belt is used for winding the film, the support plate is connected to the frame, the support plate is arranged below the upper half of the conveyor belt, and the support plate is used to support the upper half of the conveyor belt so that the film wound on the upper half of the conveyor belt can remain flat; A visual inspection device, the visual inspection device is connected to the frame, the visual inspection device is arranged above the conveyor belt, and the visual inspection device is used to detect defects on the film wound around the conveyor belt; A tension adjusting device is arranged on the frame, and is used to adjust the tension of the film between the unwinding roller and the winding roller.

2. The film rewinding machine according to claim 1, characterized in that: It also includes a slide and a fastener, wherein the slide is arranged below the visual inspection device, the slide can be slidably connected to the frame along the front-rear direction, the conveyor belt can be rotatably arranged on the slide, the support plate is connected to the slide, and the fastener is used to fix the slide to the frame.

3. The film rewinding machine according to claim 2, characterized in that: The fastener is a bolt, and a guide groove is provided on the frame. The length direction of the guide groove is parallel to the front-to-back direction. A threaded hole is provided on the slide seat. The bolt passes through the guide groove and is threadedly connected to the inner wall of the threaded hole. The bolt can slide in the guide groove along the front-to-back direction, and the nut end of the bolt can be pressed against the frame to fix the slide seat on the frame.

4. The film rewinding machine according to claim 1, characterized in that: It also includes a first traction roller and a second traction roller, the left and right ends of the first traction roller and the second traction roller are rotatably connected to the frame, the first traction roller is arranged between the conveyor belt and the unwinding roller, and the first traction roller is used for winding the film, and the second traction roller is arranged between the conveyor belt and the winding roller, and the second traction roller is used for winding the film.

5. The film rewinding machine according to claim 1, characterized in that: The tension adjustment device includes an adjusting roller and a first linear drive component, the first linear drive component is arranged on the frame, the adjusting roller is arranged between the conveyor belt and the unwinding roller, the left and right ends of the adjusting roller are rotatably connected to the output end of the first linear drive component, the adjusting roller is used for winding the film, and the first linear drive component is used to adjust the relative position between the adjusting roller and the conveyor belt and the unwinding roller to adjust the tension of the film wound on the adjusting roller.

6. The film rewinding machine according to claim 5, characterized in that: The first linear drive assembly includes two slides and two cylinders. The two slides can be slidably connected to the frame in the up and down directions. The left and right ends of the adjusting roller are rotatably connected to the two slides, the cylinder bodies of the two cylinders are connected to the frame, and the piston rods of the two cylinders are respectively connected to the two slides.

7. The film rewinding machine according to claim 1, characterized in that: It also includes an ion wind generating device, which is arranged on the frame and between the conveyor belt and the unwinding roller. The ion wind generating device is used to blow gas carrying positive and negative ions toward the film between the conveyor belt and the unwinding roller to blow away dust attached to the surface of the film.

8. The film rewinding machine according to claim 1, characterized in that: It also includes a first lighting component and a second lighting component, wherein the first lighting component and the second lighting component are both arranged on the frame, and the first lighting component and the second lighting component are respectively arranged on the front and rear sides of the conveyor belt, and the first lighting component and the second lighting component are both used to illuminate the film wound around the conveyor belt.

9. The film rewinding machine according to claim 8, characterized in that: The first lighting component and the second lighting component are both arranged obliquely, and an angle formed by the first lighting component and the second lighting component faces the conveyor belt.

10. The film rewinding machine according to claim 1, characterized in that: The unwinding roller is a first expansion and contraction roller, and the winding roller is a second expansion and contraction roller.

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