Visual inspection assembly of automatic label inspection machine for protective film

By designing a visual inspection component for an automatic protective film labeling machine, and utilizing a sliding ring and drive assembly to adjust the camera angle and clean dust, the visual error problem caused by a fixed camera is solved, thus improving the accuracy and cleanliness of the inspection.

CN121877914APending Publication Date: 2026-04-17YANTAI JIANXIN ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-28
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Most cameras in existing visual inspection equipment are fixed and cannot perform all-around inspection by changing the viewing angle, resulting in visual errors.

Method used

A visual inspection component for an automatic protective film labeling machine has been designed, including a sliding ring, a drive component, a marking component, a winding and unwinding component, a pushing component, and a cleaning component. Through the coordinated work of these components, the camera angle can be adjusted and the protective film can be inspected from multiple angles. The cleaning component is used to blow away dust and impurities.

Benefits of technology

It enables multi-angle visual inspection of protective film label information, reduces visual errors, ensures inspection accuracy, and removes dust and impurities to prevent them from affecting the inspection results.

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Abstract

The invention discloses a visual inspection assembly of an automatic label inspection machine for protective films, and belongs to the technical field of visual inspection.The visual inspection assembly comprises a base, a conveyor is fixedly mounted at the top of the base, a visual inspection equipment body is fixedly mounted on the outer surface of the conveyor, and an observation assembly is arranged at the bottom of the visual inspection equipment body; the observation assembly comprises a sliding ring, the outer surface of the sliding ring is slidably connected with a limiting seat, the limiting seat is fixedly connected with the bottom of the visual inspection equipment body, the right side of the sliding ring is fixedly connected with a mounting plate, and a camera is fixedly mounted at the bottom of the mounting plate. According to the device, a wound protective film with a compiled and printed label or a protective film with a packaged article can be visually detected, the label on the protective film is visually detected by arranging the observation assembly, and the observation assembly can be driven by the driving assembly to conduct angle adjustment so that multidirectional observation can be conveniently conducted; the device has an effect of facilitating multi-angle detection.
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Description

Technical Field

[0001] This application relates to the field of visual inspection technology, and more specifically, to a visual inspection component for an automatic labeling machine for protective films. Background Technology

[0002] In-mold labeling (IMC) technology, as a mature process, has been widely used in the production of plastic products such as food packaging and daily-use containers. This technology involves placing printed labels directly into an injection molding machine, where they are fused to the product body through injection molding. It offers significant advantages such as attractive designs, durability, strong anti-counterfeiting features, and an environmentally friendly, label-free feel. After printing or affixing labels to the packaging film, visual inspection is necessary to check the labels and prevent misapplication or unclear printing.

[0003] In existing technologies, the label information of printed or affixed packaging protective film or already packaged goods is conveniently detected by passing it through a camera in a vision inspection device. However, most cameras in existing vision inspection devices are fixed in position and remain in a fixed position when reading label information, which may cause visual errors and makes it inconvenient to perform all-round detection of label information by changing the observation angle. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a visual inspection component for an automatic protective film label inspection machine, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this application provides a visual inspection component for an automatic protective film labeling machine, including a base. A conveyor is fixedly mounted on the top of the base, and a visual inspection device body is fixedly mounted on the outer surface of the conveyor. An observation component is provided at the bottom of the visual inspection device body. The observation component includes a sliding ring, and a limiting seat is slidably connected to the outer surface of the sliding ring. The limiting seat is fixedly connected to the bottom of the visual inspection device body. A mounting plate is fixedly connected to the right side of the sliding ring, and a camera is fixedly mounted at the bottom of the mounting plate. The camera is electrically connected to the visual inspection device body. Teeth are fixedly connected to the outer surface of the sliding ring, and a driving component is provided on the back of the teeth. A marking component is provided on the front of the driving component. A winding and unwinding component is provided on the back of the conveyor. A pushing component for pushing the packaged protective film to the center is assembled on the top of the conveyor, and a cleaning component for blowing away dust and impurities on the outer surface of the protective film is assembled at the bottom of the visual inspection device body.

[0006] Preferably, the drive assembly includes a first support base, which is fixedly connected to the top of the visual inspection device body. A first motor is fixedly connected to the back of the first support base. The output end of the first motor is fixedly connected to a first rotating shaft via a coupling. The first rotating shaft passes through and is rotatably connected to the top of the visual inspection device body. A first support plate is rotatably connected to the bottom of the first rotating shaft. The first support plate is fixedly connected to the visual inspection device body. A worm thread is provided on the outer surface of the first rotating shaft. A worm wheel meshes with the front of the worm thread. A rotating column passes through and is fixedly connected to the right side of the worm wheel. A second support plate is rotatably connected to the outer surface of the rotating column. The second support plate is fixedly connected to the bottom of the visual inspection device body. A gear is fixedly connected to the outer surface of the rotating column. The gear meshes with the back of the teeth.

[0007] Preferably, the marking component includes a second support base, which is fixedly connected to the top of the visual inspection device body. A second motor is fixedly connected to the top of the second support base. The output end of the second motor is fixedly connected to a second rotating shaft via a coupling. A screw is fixedly connected to the rear end of the second rotating shaft. The screw is rotatably connected to the front of the first support base. A slider is threaded onto the outer surface of the screw. The slider is slidably connected to the top of the visual inspection device body. A chamber is fixedly connected to the top of the visual inspection device body. An inlet is fixedly connected to the right side of the chamber. A first piston rod is slidably connected to the inner surface of the chamber. The first piston rod is fixedly connected to the front of the slider. A metal hose is fixedly connected to the inner surface of the visual inspection device body. A spray head is fixedly connected to the rear end of the metal hose. The spray head is connected to the chamber via a pipeline.

[0008] Preferably, the take-up and unwind assembly includes a support frame, a third support base is fixedly connected to the back of the support frame, a third motor is fixedly connected to the top of the third support base, a third rotating shaft is fixedly connected to the output end of the third motor via a coupling, the third rotating shaft passes through and is rotatably connected to the front of the support frame, and a take-up and unwind reel is fixedly connected to the front end of the third rotating shaft.

[0009] Preferably, the pushing component includes a support plate, which is fixedly connected to the left side of the visual inspection device body. There are two support plates, and a pushing plate is provided on the facing side of the two support plates. There are two pushing plates, and a telescopic rod is fixedly connected to the opposite side of the two pushing plates. The telescopic rod is fixedly connected to the support plate. A limiting plate is fixedly connected to the opposite side of the two pushing plates. The limiting plate is slidably connected to the support plate. A connecting arm is hinged to the top of each of the two pushing plates.

[0010] Preferably, the pushing component further includes a first hydraulic chamber, which is fixedly connected to the back of the visual inspection device body. A first hydraulic rod is slidably connected to the inner surface of the first hydraulic chamber. The first hydraulic rod passes through and is slidably connected to the back of the visual inspection device body. A first pushing arm is hinged to the front of the first hydraulic rod. A first rotating block is fixedly connected to the front of the first pushing arm. The first rotating block is rotatably connected to the right side of the worm gear. A second hydraulic chamber is fixedly connected to the top of the visual inspection device body. A pipeline connects the second hydraulic chamber and the first hydraulic chamber. A second hydraulic rod is slidably connected to the inner surface of the second hydraulic chamber. A lifting plate is fixedly connected to the upper end of the second hydraulic rod. The lifting plate is hinged to the upper end of the connecting arm. A limit post is fixedly connected to the bottom of the lifting plate. A limit sleeve is slidably connected to the outer surface of the limit post. The limit sleeve is fixedly connected to the outer surface of the second hydraulic chamber.

[0011] Preferably, the cleaning component includes an air chamber, which is fixedly connected to the back of the visual inspection device body. A second piston rod is slidably connected to the inner surface of the air chamber. A second push arm is hinged to the front of the second piston rod. A second rotating block is fixedly connected to the front of the second push arm. The second rotating block is fixedly connected to the right side of the gear.

[0012] Preferably, the cleaning assembly further includes a jet nozzle, which penetrates and is fixedly connected to the top of the mounting plate. An air supply pipe is connected between the jet nozzle and the air chamber. A support ring is movably sleeved on the outer surface of the air supply pipe. A connecting rod is fixedly connected between the support ring and the limiting seat.

[0013] The advantages of this application are: (1) This application can visually inspect the protective film with printed labels or the protective film with packaged items. By setting up the observation component, the label on the protective film can be visually inspected. By driving the observation component, the angle can be adjusted to facilitate multi-angle observation, which has the function of facilitating multi-angle inspection.

[0014] (2) The application also drives the movement of the push component by pushing the movement of the push component, so that the push component pushes the protective film of the packaged items conveyed on the conveyor, thereby pushing it to the center position, which has the function of facilitating visual inspection of the observation component.

[0015] (3) The present application also drives the cleaning component to move by pushing the component to move, so that the cleaning component continuously sprays air onto the protective film, thereby blowing away the dust and impurities that fall on the protective film, which has the function of preventing dust and impurities from obscuring the label information and affecting the visual inspection effect. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a left view of the overall structure of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a right-side top view of part of the structure of the present invention; Figure 5 This is a partial structural left view of the present invention; Figure 6 This is the invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is the invention Figure 4 Enlarged schematic diagram of the structure at point B; Figure 8 This is the invention Figure 5 Enlarged schematic diagram of the structure at point C; Figure 9 This is the invention Figure 5 Enlarged schematic diagram of the structure at point D.

[0017] In the above image: 1. Base; 2. Conveyor; 3. Visual inspection equipment body; 4. Observation components; 401. Sliding ring; 402. Limiting seat; 403. Mounting plate; 404. Camera; 405. Tooth; 5. Drive assembly; 501. First support base; 502. First motor; 503. First rotating shaft; 504. First support plate; 505. Worm thread; 506. Worm wheel; 507. Rotating column; 508. Second support plate; 509. Gear; 6. Marking assembly; 601. Second support base; 602. Second motor; 603. Second rotating shaft; 604. Screw; 605. Slider; 606. Chamber body; 607. Feed inlet; 608. First piston rod; 609. Metal hose; 610. Spray head; 7. Winding assembly; 701. Support frame; 702. Third support base; 703. Third motor; 704. Third rotating shaft; 705. Winding reel; 8. Pushing assembly; 801. Support plate; 802. Pushing plate; 803. Telescopic rod; 804. Limiting plate; 805. Connecting arm; 806. First hydraulic chamber; 807. First hydraulic rod; 808. First pushing arm; 809. First rotating block; 810. Second hydraulic chamber; 811. Second hydraulic rod; 812. Lifting plate; 813. Limiting post; 814. Limiting sleeve; 9. Cleaning assembly; 901. Air chamber; 902. Second piston rod; 903. Second push arm; 904. Second rotating block; 905. Jet nozzle; 906. Air supply pipe; 907. Support ring; 908. Connecting rod. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Example 1, see Figures 1-9This embodiment provides a visual inspection component for an automatic protective film label inspection machine, including a base 1. A conveyor 2 is fixedly installed on the top of the base 1. The conveyor 2 is used to transport items packaged in protective film, thereby visually inspecting the label information on the protective film of the items. A visual inspection device body 3 is fixedly installed on the outer surface of the conveyor 2. The visual inspection device body 3 is used to observe the label information on the protective film through a camera 404, thereby comparing and inspecting the information on the label. This is an existing technology device. An observation component 4 is provided at the bottom of the visual inspection device body 3. The observation component 4 is used to capture images of the label information on the protective film to facilitate visual inspection. The observation component 4 can be angled under the action of a drive component 5. Component 4 includes a sliding ring 401, with annular grooves on both sides. A limiting seat 402 is slidably connected to the outer surface of the sliding ring 401, allowing the sliding ring 401 to slide within the limiting seat 402. During this movement, the sliding ring 401 rotates. The limiting seat 402 has a structure that matches the annular grooves and their curvature on the sliding ring 401, and also provides an opening for the teeth 405 to pass through. The limiting seat 402 is fixedly connected to the bottom of the visual inspection device body 3. A mounting plate 403 is fixedly connected to the right side of the sliding ring 401, and a camera 404 is fixedly mounted on the bottom of the mounting plate 403. The camera 404 is used to capture images of the label information on the protective film. The camera 404 is electrically connected to the visual inspection device body 3. The information observed by head 404 is transmitted back to the visual inspection device body 3 for comparison of label information. A tooth 405 is fixedly connected to the outer surface of the sliding ring 401. A drive component 5 is provided on the back of the tooth 405. The drive component 5 is used to drive the observation component 4 to adjust its angle. The drive component 5 includes a first support base 501, which is fixedly connected to the top of the visual inspection device body 3. A first motor 502 is fixedly connected to the back of the first support base 501. The first motor 502 is specifically a DC motor capable of forward and reverse driving. The output end of the first motor 502 is fixedly connected to a first rotating shaft 503 via a coupling. The first rotating shaft 503 passes through and is rotatably connected to the top of the visual inspection device body 3. A first support plate 504 is rotatably connected to the bottom of the 03 unit. The first support plate 504 is fixedly connected to the main body 3 of the vision inspection equipment. A reinforcing rib is provided between the first support plate 504 and the main body 3 of the vision inspection equipment. A worm thread 505 is provided on the outer surface of the first rotating shaft 503. The first rotating shaft 503 and the worm thread 505 are an integral structure. A worm wheel 506 is meshed on the front of the worm thread 505. A rotating column 507 is passed through and fixedly connected to the right side of the worm wheel 506. A second support plate 508 is rotatably connected to the outer surface of the rotating column 507. A bearing is provided between the rotating column 507 and the second support plate 508. The second support plate 508 is fixedly connected to the bottom of the main body 3 of the vision inspection equipment. A gear 509 is fixedly connected to the outer surface of the rotating column 507.Gear 509 meshes with teeth 405 on the back. A marking component 6 is provided on the front of drive assembly 5. The marking component 6 can spray marking paint onto protective films that fail visual inspection. The marking component 6 includes a second support base 601, which is fixedly connected to the top of the visual inspection equipment body 3. A second motor 602 is fixedly connected to the top of the second support base 601. The output end of the second motor 602 is fixedly connected to a second rotating shaft 603 via a coupling. A screw 604 is fixedly connected to the rear end of the second rotating shaft 603. The screw 604 is rotatably connected to the front of the first support base 501. A slider 605 is threaded onto the outer surface of the screw 604. The slider 605 is connected to the visual inspection equipment... The top of the main body 3 is slidably connected, and a slide rail is provided on the top of the visual inspection equipment 3 for the slider 605 to slide. A chamber 606 is fixedly connected to the top of the visual inspection equipment 3. The chamber 606 contains marking paint. A feed inlet 607 is fixedly connected to the right side of the chamber 606. The feed inlet 607 is specifically a short section of tube that communicates with the chamber 606 and is equipped with a threaded cap. A first piston rod 608 is slidably connected to the inner surface of the chamber 606. The first piston rod 608 is fixedly connected to the front of the slider 605. A metal flexible tube 609 is fixedly connected to the inner surface of the visual inspection equipment 3. The metal flexible tube 609 is similar to the structure of a lamp post and can be freely deformed and fixed. The spray head 610 is used to adjust its position and orientation. A metal hose 609 is fixedly connected to the rear end of the spray head 610. The spray head 610 is connected to the hopper 606 via a pipeline. The spray head 610 and the hopper 606 are connected and communicated via a hose. Two sets of winding and unwinding assemblies 7 are provided on the back of the conveyor 2, respectively located on the left and right sides of the vision inspection equipment body 3. The winding and unwinding assemblies 7 are used to place protective films with printed or affixed labels on unpackaged items. The two sets of winding and unwinding assemblies 7 are used to release and rewind the protective film, allowing it to continuously pass under the vision inspection equipment body 3, facilitating the inspection of the label information on the protective film. The inspection and unwinding assembly 7 includes a support frame 701, a third support base 702 fixedly connected to the back of the support frame 701, a third motor 703 fixedly connected to the top of the third support base 702, the third motor 703 being a brake motor, and a third rotating shaft 704 fixedly connected to the output end of the third motor 703 via a coupling. The third rotating shaft 704 penetrates and is rotatably connected to the front of the support frame 701, and a take-up / unwinding reel 705 is fixedly connected to the front end of the third rotating shaft 704. A pushing assembly 8 is mounted on the top of the conveyor 2 to push the protective film of the packaged items to the center. A cleaning assembly 9 is mounted on the bottom of the visual inspection equipment body 3 to blow away dust and impurities from the outer surface of the protective film.

[0025] In practical use, the aforementioned equipment involves placing items wrapped in protective film on conveyor 2, which then passes under the vision inspection device body 3 as it is conveyed to the right. Unwrapped items, but with printed or affixed labels, are wound onto the take-up / unwrap reel 705 on the left, with one end connected to the take-up / unwrap reel 705 on the right via a sliding ring 401. The third motor 703 is then activated, driving the third rotating shaft 704 to rotate the take-up / unwrap reels 705, allowing both reels to wind and unwind respectively. This ensures the protective film continuously passes under the vision inspection device body 3. The camera 404 visually inspects the label information observed on the protective film and transmits this information to the vision inspection device body 3 for comparison. Simultaneously, the first motor 502 is activated, driving the first rotating shaft 503 to rotate. The first rotating shaft 503 then drives the worm gear 505, causing the worm wheel 506 to rotate. The worm gear 506 drives the rotating column 507, causing the gear 509 to rotate. The gear 509 then moves the teeth 405, causing the sliding ring 401 to slide within the limit seat 402. At this time, the sliding ring 401 rotates itself, which in turn drives the mounting plate 403 to adjust the position of the camera 404, enabling it to perform multi-angle visual inspection of the protective film, thus making the information more accurate. When an error or unclear label information is detected on the protective film, the second motor 602 is activated to drive the second rotating shaft 603 to rotate. The second rotating shaft 603 drives the screw 604 to rotate. The rotation of the screw 604 causes the slider 605 to slide forward on the visual inspection device body 3. The slider 605 then drives the first piston rod 608 to retract into the chamber 606, thereby pushing the marking paint in the chamber 606 through the hose and spraying it from the spray head 610 onto the unqualified protective film for marking.

[0026] Example 2, see Figures 1-9The pushing component 8 includes two support plates 801, which are fixedly connected to the left side of the visual inspection device body 3. A pushing plate 802 is provided on the facing side of each support plate 801. A telescopic rod 803 is fixedly connected to the opposite side of each pushing plate 802, and the telescopic rod 803 is fixedly connected to the support plate 801. A limiting plate 804 is fixedly connected to the opposite side of each pushing plate 802, and the limiting plate 804 is slidably connected to the support plate 801. A connecting arm 805 is hinged to the top of each pushing plate 802, and the connecting arm 805 has an arc-shaped structure to prevent it from touching the protective film on the winding and unwinding component 7 during adjustment. The pushing component 8 also includes a first hydraulic chamber 806, which is fixedly connected to the back of the visual inspection device body 3. A first hydraulic rod 807 is slidably connected to the inner surface of the first hydraulic chamber 806, and the first hydraulic rod 807 is slidably connected to the back of the visual inspection device body 3. A first push arm 808 is hinged to the front of the pressure rod 807. A first rotating block 809 is fixedly connected to the front of the first push arm 808. The first rotating block 809 is rotatably connected to the right side of the worm gear 506. The first rotating block 809 is eccentrically positioned on the worm gear 506. A second hydraulic chamber 810 is fixedly connected to the top of the visual inspection equipment body 3. The second hydraulic chamber 810 is connected to the first hydraulic chamber 806 by pipelines. The second hydraulic chamber 810 and the first hydraulic chamber 806 are connected and communicated by a hose. Hydraulic oil is provided in the first hydraulic chamber 806 and the second hydraulic chamber 810 has the same volume as the first hydraulic chamber 806. A second hydraulic rod 811 is slidably connected to the inner surface of the second hydraulic chamber 810. A lifting plate 812 is fixedly connected to the upper end of the second hydraulic rod 811. The lifting plate 812 is hinged to the upper end of the connecting arm 805. A limit post 813 is fixedly connected to the bottom of the lifting plate 812. A limit sleeve 814 is slidably connected to the outer surface of the limit post 813. The limit sleeve 814 is fixedly connected to the outer surface of the second hydraulic chamber 810.

[0027] In practical use, when the worm gear 506 rotates, it also drives the first rotating block 809 to rotate around the rotation axis of the worm gear 506. At this time, the first rotating block 809 drives the first pushing arm 808 to make the first hydraulic rod 807 move back and forth continuously. The first hydraulic rod 807 will continuously push and extract the hydraulic oil in the first hydraulic chamber 806 and the second hydraulic chamber 810, causing the second hydraulic rod 811 to continuously extend and retract in the second hydraulic chamber 810. The second hydraulic rod 811 will drive the lifting plate 812 to continuously rise and fall. The lifting plate 812 will continuously pull the connecting arm 805 up and push the connecting arm 805 down. When the connecting arm 805 rises, its lower end will move closer. When the connecting arm 805 falls, its lower end will open. At this time, the connecting arm 805 will drive the two pushing plates 802 to continuously separate and move closer. The pushing plates 802 will continuously push the items wrapped in protective film on the conveyor 2, so that the items are in the center position on the conveyor 2, so that the camera 404 can visually detect the label information on the protective film packaging of the items.

[0028] Example 3, see Figures 1-9 The cleaning component 9 includes an air chamber 901, which is fixedly connected to the back of the visual inspection device body 3. A second piston rod 902 is slidably connected to the inner surface of the air chamber 901. A second push arm 903 is hinged to the front of the second piston rod 902. A second rotating block 904 is fixedly connected to the front of the second push arm 903. The second rotating block 904 is fixedly connected to the right side of the gear 509. The second rotating block 904 is eccentrically set on the gear 509. The cleaning component 9 also includes a jet nozzle 905, which is penetrating and fixedly connected to the top of the mounting plate 403. An air supply pipe 906 is connected between the jet nozzle 905 and the air chamber 901. A support ring 907 is movably sleeved on the outer surface of the air supply pipe 906. A connecting rod 908 is fixedly connected between the support ring 907 and the limit seat 402.

[0029] In practical use, when the sliding ring 401 drives the mounting plate 403 to adjust the position of the camera 404, the jet nozzle 905 moves with the position of the camera 404. At this time, as the gear 509 rotates during adjustment, the gear 509 also drives the second rotating block 904 to rotate around the rotation axis of the gear 509. At this time, the second rotating block 904 drives the second push arm 903 to make the second piston rod 902 move back and forth continuously in the air chamber 901. The continuous back and forth movement of the second piston rod 902 in the air chamber 901 will cause the air chamber 901 to continuously draw in and expel air. The air in the air chamber 901 will be sprayed out from the jet nozzle 905 through the air supply pipe 906, thereby blowing towards the protective film and blowing away the dust and impurities on the protective film to prevent dust and impurities from covering the label information and affecting the visual inspection effect.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A visual inspection component for an automatic protective film label inspection machine, comprising a base (1), characterized in that, A conveyor (2) is fixedly installed on the top of the base (1), and a visual inspection device body (3) is fixedly installed on the outer surface of the conveyor (2). An observation component (4) is provided at the bottom of the visual inspection device body (3). The observation component (4) includes a sliding ring (401), a limiting seat (402) is slidably connected to the outer surface of the sliding ring (401), the limiting seat (402) is fixedly connected to the bottom of the visual inspection device body (3), a mounting plate (403) is fixedly connected to the right side of the sliding ring (401), a camera (404) is fixedly mounted at the bottom of the mounting plate (403), the camera (404) is electrically connected to the visual inspection device body (3), teeth (405) are fixedly connected to the outer surface of the sliding ring (401), and a driving component (5) is provided on the back of the teeth (405). The drive assembly (5) has a marking assembly (6) on the front, the conveyor (2) has a winding and unwinding assembly (7) on the back, the conveyor (2) has a pushing assembly (8) on the top for pushing the protective film of the packaged items to the center, and the visual inspection device body (3) has a cleaning assembly (9) on the bottom for blowing away dust and impurities on the outer surface of the protective film.

2. The visual inspection component of the automatic label inspection machine for protective films according to claim 1, characterized in that, The drive assembly (5) includes a first support base (501), which is fixedly connected to the top of the visual inspection device body (3). A first motor (502) is fixedly connected to the back of the first support base (501). The output end of the first motor (502) is fixedly connected to a first rotating shaft (503) via a coupling. The first rotating shaft (503) is rotatably connected to the top of the visual inspection device body (3). A first support plate (504) is rotatably connected to the bottom of the first rotating shaft (503). The first support plate (504) is connected to the visual inspection device body (3). The main body (3) is fixedly connected to each other. The outer surface of the first rotating shaft (503) is provided with a worm thread (505). The front of the worm thread (505) is meshed with a worm wheel (506). The right side of the worm wheel (506) is penetrated and fixedly connected to a rotating column (507). The outer surface of the rotating column (507) is rotatably connected to a second support plate (508). The second support plate (508) is fixedly connected to the bottom of the main body (3) of the vision inspection device. The outer surface of the rotating column (507) is fixedly connected to a gear (509). The gear (509) meshes with the back of the tooth (405).

3. The visual inspection component of an automatic protective film label inspection machine according to claim 2, characterized in that, The marking component (6) includes a second support base (601), which is fixedly connected to the top of the visual inspection device body (3). A second motor (602) is fixedly connected to the top of the second support base (601). The output end of the second motor (602) is fixedly connected to a second rotating shaft (603) via a coupling. A screw (604) is fixedly connected to the rear end of the second rotating shaft (603). The screw (604) is rotatably connected to the front of the first support base (501). A slider (605) is threaded on the outer surface of the screw (604). The slider (605) is connected to the first support base (501). The visual inspection equipment body (3) is slidably connected to the top, and a chamber (606) is fixedly connected to the top of the visual inspection equipment body (3). A feed inlet (607) is fixedly connected to the right side of the chamber (606). A first piston rod (608) is slidably connected to the inner surface of the chamber (606). The first piston rod (608) is fixedly connected to the front of the slider (605). A metal hose (609) is fixedly connected to the inner surface of the visual inspection equipment body (3). A spray head (610) is fixedly connected to the rear end of the metal hose (609). The spray head (610) is connected to the chamber (606) by a pipeline.

4. The visual inspection component of the automatic label inspection machine for protective films according to claim 1, characterized in that, The take-up and unwind assembly (7) includes a support frame (701), a third support base (702) is fixedly connected to the back of the support frame (701), a third motor (703) is fixedly connected to the top of the third support base (702), a third rotating shaft (704) is fixedly connected to the output end of the third motor (703) through a coupling, the third rotating shaft (704) passes through and is rotatably connected to the front of the support frame (701), and a take-up and unwind reel (705) is fixedly connected to the front end of the third rotating shaft (704).

5. The visual inspection component of an automatic protective film label inspection machine according to claim 2, characterized in that, The pushing component (8) includes a support plate (801), which is fixedly connected to the left side of the visual inspection device body (3). There are two support plates (801). A pushing plate (802) is provided on the side of the two support plates (801) facing each other. There are two pushing plates (802). A telescopic rod (803) is fixedly connected to the side of the two pushing plates (802) facing away from each other. The telescopic rod (803) is fixedly connected to the support plate (801). A limiting plate (804) is fixedly connected to the side of the two pushing plates (802) facing away from each other. The limiting plate (804) is connected to the support plate (801) through and slidingly. A connecting arm (805) is hinged to the top of each of the two pushing plates (802).

6. The visual inspection component of an automatic protective film label inspection machine according to claim 5, characterized in that, The pushing assembly (8) further includes a first hydraulic chamber (806), which is fixedly connected to the back of the visual inspection device body (3). A first hydraulic rod (807) is slidably connected to the inner surface of the first hydraulic chamber (806). The first hydraulic rod (807) passes through and is slidably connected to the back of the visual inspection device body (3). A first pushing arm (808) is hinged to the front of the first hydraulic rod (807). A first rotating block (809) is fixedly connected to the front of the first pushing arm (808). The first rotating block (809) is rotatably connected to the right side of the worm gear (506). The visual inspection device body ( 3) A second hydraulic chamber (810) is fixedly connected to the top. The second hydraulic chamber (810) is connected to the first hydraulic chamber (806) by pipeline. A second hydraulic rod (811) is slidably connected to the inner surface of the second hydraulic chamber (810). A lifting plate (812) is fixedly connected to the upper end of the second hydraulic rod (811). The lifting plate (812) is hinged to the upper end of the connecting arm (805). A limit post (813) is fixedly connected to the bottom of the lifting plate (812). A limit sleeve (814) is slidably connected to the outer surface of the limit post (813). The limit sleeve (814) is fixedly connected to the outer surface of the second hydraulic chamber (810).

7. The visual inspection component of an automatic protective film label inspection machine according to claim 2, characterized in that, The cleaning component (9) includes an air chamber (901), which is fixedly connected to the back of the visual inspection device body (3). A second piston rod (902) is slidably connected to the inner surface of the air chamber (901). A second push arm (903) is hinged to the front of the second piston rod (902). A second rotating block (904) is fixedly connected to the front of the second push arm (903). The second rotating block (904) is fixedly connected to the right side of the gear (509).

8. The visual inspection component of an automatic protective film label inspection machine according to claim 7, characterized in that, The cleaning assembly (9) also includes a jet nozzle (905), which is connected to the top of the mounting plate (403) through and fixedly connected. A gas supply pipe (906) is connected between the jet nozzle (905) and the air chamber (901). A support ring (907) is movably sleeved on the outer surface of the gas supply pipe (906). A connecting rod (908) is fixedly connected between the support ring (907) and the limiting seat (402).