A plastic film surface defect detection device
By adjusting the film tension using the adjustment component and cleaning the dust using the cleaning component, the problems of low efficiency and poor accuracy in traditional detection methods are solved, achieving efficient and accurate detection of surface defects in plastic films.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN ZHONGFEI FILM TECH CO LTD
- Filing Date
- 2025-05-05
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional plastic film surface defect detection relies on manual visual inspection, which is inefficient, has a high rate of missed detection, and the accuracy of infrared detection is affected by differences in film tension and surface dust.
The film tension is adjusted by an adjustment component, the surface dust is cleaned by a cleaning component, and the detection accuracy is improved by an infrared detection component.
It achieves efficient and automated detection of defects on thin film surfaces, reduces the impact of wrinkles and dust impurities, and improves the accuracy and consistency of detection.
Smart Images
Figure CN224317536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic film testing technology, specifically a plastic film surface defect detection device. Background Technology
[0002] Plastic film surface defect detection devices are important technical equipment in the field of industrial automation quality control. With the widespread application of plastic films in packaging, electronics, agriculture and other fields, their surface quality directly affects product performance and appearance. Traditional detection mainly relies on manual visual inspection, which has problems such as low efficiency, high missed detection rate and inconsistent standards.
[0003] When performing film defect detection in most equipment, differences in raw materials, formulations, and environmental temperature, humidity, and pressure variations can lead to variations in film tension. Furthermore, when detecting surface defects in plastic films, the surface often contains dust or small amounts of debris accumulated during production or transportation, making accurate detection by infrared detection components difficult. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a plastic film surface defect detection device. The tension of the plastic film during detection can be adjusted by the adjustment component to avoid wrinkles and improve the detection accuracy of the infrared detection component. The cleaning component can clean the upper and lower surfaces of the plastic film and collect dust to ensure the accuracy of the detection.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0006] A plastic film surface defect detection device includes: a workbench, a fixed frame connected to the top of the workbench, two mounting plates connected to one side of the fixed frame, infrared detection components mounted on one side of each of the two mounting plates, a plastic film disposed between the two infrared detection components, two electric slide rails mounted on the top of the workbench, each of the two electric slide rails having a slider inside, an adjustment component disposed on one side of the fixed frame for adjusting the tension of the plastic film during detection, the adjustment component including: a crossbar, a lifting rod, and a lifting groove, and a cleaning component disposed on one side of the fixed frame for cleaning the surface of the plastic film, the cleaning component including: a cleaning roller, a support frame, and a dust collection box.
[0007] Preferably, the fixed frame has two limiting grooves inside, and each limiting groove has a limiting rod installed inside. A connecting rod is slidably connected to the outer side of each limiting rod. A crossbar is provided on one side of the fixed frame. One end of each of the two connecting rods is connected to one side of the crossbar. A motor a is installed on one side of each of the two sliders. An electric roller is driven to one side of motor a via a drive shaft and rotatably connected to one side of the crossbar via a bearing. A discharge roller is installed on the outer side of one electric roller, and a receiving roller is installed on the outer side of the other electric roller. A motor b is installed inside the worktable. A lifting groove corresponding to the top of motor b is provided inside the fixed frame. A lead screw a is driven to the top of motor b, and one end of lead screw a is rotatably connected to the inside of the lifting groove. Next, a lifting rod is provided on the outside of the lead screw a. One end of the lead screw a passes through the lifting rod and is threadedly connected to the lifting rod. One end of the lifting rod is connected to one side of the crossbar. A moving slot is opened on the top of the fixed frame. A motor c is installed on the top of the fixed frame. Two mounting brackets are provided on the top of the fixed frame. Both ends of the two mounting brackets pass through the corresponding moving slots and are rotatably connected to the adjusting rollers through a rotating shaft. A lead screw b is driven and connected to one side of the motor c. The surface of the lead screw b is provided with threads with opposite directions of rotation at both ends. A fixing plate is installed on the top of the fixed frame. Both mounting brackets have threaded holes corresponding to the lead screw b inside. One end of the lead screw b passes through the two mounting brackets and is rotatably connected to the fixing plate through a bearing.
[0008] Preferably, a connecting plate is installed on one side of the fixing frame, and a motor d is installed on the top of the connecting plate. A gear a is driven and connected to one side of the fixing frame via a drive shaft. A gear b is meshed with the top of gear a. Rotating rods are connected to one side of both gear a and gear b. Cleaning rollers are connected to one side of each of the two rotating rods. The two cleaning rollers are respectively attached to the top and bottom of the plastic film. A dust collection groove is provided on one side of each of the two cleaning rollers. A support frame is connected to one side of the dust collection groove. One end of the support frame is connected to one side of the fixing frame. One end of each of the two cleaning rollers is rotatably connected to one side of the support frame via a rotating shaft. A dust collection pipe is connected to one side of each of the two dust collection grooves. A dust collection box is installed on one side of the fixing frame. One end of each of the two dust collection pipes passes through the fixing frame and extends into the dust collection box. A dust collection bag for absorbing debris is provided inside the dust collection box. A fan is installed on one side of the dust collection bag. A filter screen is provided on one side of the dust collection box. A sealing plate is rotatably connected to one side of the dust collection box via a hinge.
[0009] The beneficial effects of this utility model are:
[0010] The advantage of this invention is that by utilizing the crossbar, lifting rod, and lifting groove in the adjustment assembly, the crossbar can be moved up and down by the lead screw a, thereby allowing the electric roller to adjust the tension of the plastic film during detection by moving up and down, avoiding wrinkles. Furthermore, the rotation of the lead screw b causes the two mounting frames to move along with the two adjusting rollers, ensuring that the plastic film remains flat during detection and improving the detection accuracy of the infrared detection assembly.
[0011] Secondly, by using the cleaning roller, support frame, and dust collection box in the cleaning assembly, the rotating rod drives the cleaning roller to clean the surface of the plastic film. Then, the exhaust fan draws air, allowing the dust collection trough to transport dust and debris into the dust collection box through negative pressure. The dust bag then absorbs the dust and debris, thus collecting them for subsequent processing. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0013] Figure 2 This is a front sectional view of the overall structure of this utility model.
[0014] Figure 3 This is a schematic diagram of the lifting rod structure of this utility model.
[0015] Figure 4 This is a schematic diagram of the cleaning roller structure of this utility model.
[0016] Figure 5 This is a schematic diagram of the dust collection box structure of this utility model.
[0017] Figure 6 For the present utility model Figure 1 Enlarged view of point A.
[0018] Figure 7 For the present utility model Figure 3 Enlarged view of point B.
[0019] Figures 1-7In the middle section: 1. Workbench; 101. Fixing frame; 102. Mounting plate; 103. Infrared detection component; 104. Plastic film; 105. Electric slide rail; 106. Slider; 2. Limiting groove; 201. Limiting rod; 202. Connecting rod; 203. Crossbar; 204. Electric roller; 205. Discharge roller; 206. Receiving roller; 207. Motor a; 3. Motor b; 301. Lead screw a; 302. Lifting rod; 303. Lifting groove 4. Moving trough; 401. Motor c; 402. Mounting bracket; 403. Lead screw b; 404. Fixing plate; 405. Adjusting roller; 5. Connecting plate; 501. Motor d; 502. Gear a; 503. Gear b; 6. Rotating rod; 601. Cleaning roller; 602. Dust suction trough; 7. Support frame; 701. Dust suction pipe; 702. Dust suction box; 703. Dust suction bag; 704. Exhaust fan; 705. Filter screen; 706. Sealing plate. Detailed Implementation
[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0021] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0022] like Figures 1-7 As shown, a plastic film surface defect detection device includes a worktable 1, a fixed frame 101 connected to the top of the worktable 1, two mounting plates 102 connected to one side of the fixed frame 101, infrared detection components 103 mounted on one side of each mounting plate 102, a plastic film 104 disposed between the two infrared detection components 103, two electric slide rails 105 mounted on the top of the worktable 1, each electric slide rail 105 having a slider 106 inside, an adjustment component disposed on one side of the fixed frame 101 for adjusting the tension of the plastic film 104 during detection, the adjustment component including: a crossbar 203, a lifting rod 302 and a lifting groove 303, and a cleaning component disposed on one side of the fixed frame 101 for cleaning the surface of the plastic film 104, the cleaning component including: a cleaning roller 601, a support frame 7 and a dust collection box 702.
[0023] The adjustment assembly utilizes the crossbar 203, lifting rod 302, and lifting groove 303. The crossbar 203 moves up and down via the lead screw a301, allowing the electric roller 204 to adjust the tension of the plastic film 104 during detection, preventing wrinkles. The rotation of the lead screw b403 causes the two mounting frames to move along with the two adjusting rollers 405, ensuring the plastic film 104 remains flat during detection and improving the detection accuracy of the infrared detection assembly 103. Next, the cleaning roller 601, support frame 7, and dust collection box 702 in the cleaning assembly allow the rotating rod 6 to drive the cleaning roller 601 to clean the surface of the plastic film 104. Then, the exhaust fan 704 draws air through the dust collection groove 602, using negative pressure to transport dust and debris into the dust collection box 702. The dust bag 703 then absorbs the debris for subsequent processing.
[0024] The fixed frame 101 has two limiting grooves 2 inside, and each limiting groove 2 has a limiting rod 201 installed inside. A connecting rod 202 is slidably connected to the outside of the limiting rod 201. A crossbar 203 is provided on one side of the fixed frame 101. One end of each of the two connecting rods 202 is connected to one side of the crossbar 203. A motor a207 is installed on one side of each of the two sliders 106. An electric roller 204 is driven and connected to one side of the motor a207 via a drive shaft. The roller 204 is rotatably connected to one side of the crossbar 203 via a bearing. A discharge roller 205 is installed on the outside of one electric roller 204, and a receiving roller 206 is installed on the outside of the other electric roller 204. A motor b3 is installed inside the worktable 1. A lifting groove 303 corresponding to the top of the motor b3 is provided inside the fixed frame 101. A lead screw a301 is driven and connected to the top of the motor b3. One end of the lead screw a301 is rotatably connected to the inside of the lifting groove 303. Next, a lifting rod 302 is provided on the outside of the lead screw a301. One end of the lead screw a301 passes through the lifting rod 302 and is threadedly connected to the lifting rod 302. One end of the lifting rod 302 is connected to one side of the crossbar 203. A moving groove 4 is opened on the top of the fixed frame 101. A motor c401 is installed on the top of the fixed frame 101. Two mounting brackets 402 are provided on the top of the fixed frame 101. Both ends of the two mounting brackets 402 pass through the corresponding moving grooves 4 and are rotatably connected to the adjusting roller 405 through a rotating shaft. A lead screw b403 is driven and connected to one side of the motor c401. The surface of the lead screw b403 is provided with threads with opposite directions at both ends. A fixing plate 404 is installed on the top of the fixed frame 101. Both mounting brackets 402 have threaded holes corresponding to the lead screw b403. One end of the lead screw b403 passes through the two mounting brackets 402 and is rotatably connected to the fixing plate 404 through a bearing.
[0025] When performing film defect detection on most equipment, differences in film tension may occur due to variations in raw materials, proportions, and changes in ambient temperature, humidity, and pressure. When film tension adjustment is required, motor b3 drives screw a301 to rotate. Due to the threaded engagement between screw a301 and lifting rod 302, the rotation of screw a301 causes lifting rod 302 to move up and down. Lifting rod 302 then drives crossbar 203 to move vertically. One side of crossbar 203 is rotatably connected to one end of electric roller 204 via a bearing, and the other end of electric roller 204 is connected to slider 106 of electric slide rail 105 via motor a207. Therefore, when crossbar 203 moves one end of electric roller 204, electric slide rail 105 simultaneously moves the other end of electric roller 204 synchronously. The other side of the crossbar 203 is connected to one end of the connecting rod 202, and the connecting rod 202 is sleeved on the outside of the limiting rod 201 and slides, so that the lateral freedom of the connecting rod 202 is completely constrained. Therefore, the crossbar 203 can only move vertically along the direction of the limiting rod 201, thereby realizing that the crossbar 203 drives the electric rollers 204 at both ends to rise and fall synchronously. When the plastic film 104 is tensioned, the tension of the film between the take-up roller 206 and the output roller 205 can be changed by adjusting the traction height of the two electric rollers 204, which effectively alleviates the wrinkling problem caused by uneven tension. At the same time, the motor c401 drives the lead screw b403 to rotate. The threads at both ends of the lead screw b403 with opposite directions force the two mounting brackets 402 to move towards or away from each other, adjusting the spacing of the adjusting rollers 405 and further improving the flatness of the film.
[0026] The fixed frame 101 has a connecting plate 5 installed on one side, and a motor d501 installed on the top of the connecting plate 5. A gear a502 is driven to one side of the fixed frame 101 via a drive shaft. A gear b503 is meshed with the top of the gear a502. Rotating rods 6 are connected to one side of both gears a502 and b503. Cleaning rollers 601 are connected to one side of each of the two rotating rods 6. The two cleaning rollers 601 are respectively attached to the top and bottom of the plastic film 104. A dust suction groove 602 is provided on one side of each of the two cleaning rollers 601. A support frame 7 is connected to one side of the dust suction groove 602. One end of the support frame 7 is connected to the fixed frame 104. The fixed frame 101 is connected to one side, and one end of each of the two cleaning rollers 601 is rotatably connected to one side of the support frame 7 via a rotating shaft. One side of each of the two dust collection slots 602 is connected to a dust collection pipe 701. A dust collection box 702 is installed on one side of the fixed frame 101. One end of each of the two dust collection pipes 701 passes through the fixed frame 101 and extends into the dust collection box 702. A dust collection bag 703 for absorbing debris is provided inside the dust collection box 702. A fan 704 is installed on one side of the dust collection bag 703. A filter screen 705 is opened on one side of the dust collection box 702. A sealing plate 706 is rotatably connected to one side of the dust collection box 702 via a hinge.
[0027] When inspecting the surface defects of plastic film, the surface of the plastic film is prone to dust or small amounts of debris during production or transportation, which can make it difficult for infrared detection components to detect accurately. When using this equipment, the motor d501 drives the gear a502 to rotate. The gear a502 meshes with the gear b503, driving the two rotating rods 6 to rotate synchronously in opposite directions. The cleaning roller 601 on the rotating rod 6 rotates in close contact with the upper and lower surfaces of the plastic film 104, using the bristles to scrape off dust and impurities. The cleaned impurities are thrown into the dust collection tank 602. After the exhaust fan 704 is started, a negative pressure airflow is formed in the dust collection pipe 701, which sucks the impurities into the dust collection box 702. The dust collection bag 703 in the dust collection box 702 intercepts the dust, and the clean air is discharged through the filter screen 705. After the impurities accumulate, the sealing plate 706 can be opened to replace the dust collection bag 703, so as to achieve continuous cleaning.
[0028] Working principle:
[0029] When performing film defect detection on most equipment, differences in film tension may occur due to variations in raw materials, proportions, and changes in ambient temperature, humidity, and pressure. When film tension adjustment is required, motor b3 drives screw a301 to rotate. Due to the threaded engagement between screw a301 and lifting rod 302, the rotation of screw a301 causes lifting rod 302 to move up and down. Lifting rod 302 then drives crossbar 203 to move vertically. One side of crossbar 203 is rotatably connected to one end of electric roller 204 via a bearing, and the other end of electric roller 204 is connected to slider 106 of electric slide rail 105 via motor a207. Therefore, when crossbar 203 moves one end of electric roller 204, electric slide rail 105 simultaneously moves the other end of electric roller 204 synchronously. The other side of the crossbar 203 is connected to one end of the connecting rod 202, and the connecting rod 202 is sleeved on the outside of the limiting rod 201 and slides, so that the lateral freedom of the connecting rod 202 is completely constrained. Therefore, the crossbar 203 can only move vertically along the direction of the limiting rod 201, thereby realizing that the crossbar 203 drives the electric rollers 204 at both ends to rise and fall synchronously. When the plastic film 104 is tensioned, the tension of the film between the take-up roller 206 and the output roller 205 can be changed by adjusting the traction height of the two electric rollers 204, which effectively alleviates the wrinkling problem caused by uneven tension. At the same time, the motor c401 drives the lead screw b403 to rotate. The threads at both ends of the lead screw b403 with opposite directions force the two mounting brackets 402 to move towards or away from each other, adjusting the spacing of the adjusting rollers 405 and further improving the flatness of the film.
[0030] When inspecting the surface defects of plastic film, the surface of the plastic film is prone to dust or small amounts of debris during production or transportation, which can make it difficult for infrared detection components to detect accurately. When using this equipment, the motor d501 drives the gear a502 to rotate. The gear a502 meshes with the gear b503, driving the two rotating rods 6 to rotate synchronously in opposite directions. The cleaning roller 601 on the rotating rod 6 rotates in close contact with the upper and lower surfaces of the plastic film 104, using the bristles to scrape off dust and impurities. The cleaned impurities are thrown into the dust collection tank 602. After the exhaust fan 704 is started, a negative pressure airflow is formed in the dust collection pipe 701, which sucks the impurities into the dust collection box 702. The dust collection bag 703 in the dust collection box 702 intercepts the dust, and the clean air is discharged through the filter screen 705. After the impurities accumulate, the sealing plate 706 can be opened to replace the dust collection bag 703, so as to achieve continuous cleaning.
[0031] In addition, all electrical components mentioned in the article are electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that performs control, and the existing publicly available power connection technology will not be described in detail in the article.
[0032] The above provides a detailed description of a plastic film surface defect detection device provided in the embodiments of this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core idea of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A device for detecting surface defects in plastic films, characterized in that, include: A workbench (1) is provided with a fixed frame (101) connected to the top of the workbench (1). Two mounting plates (102) are connected to one side of the fixed frame (101). Infrared detection components (103) are installed on one side of each of the two mounting plates (102). A plastic film (104) is provided between the two infrared detection components (103). Two electric slide rails (105) are installed on the top of the workbench (1). A slider (106) is provided inside each of the two electric slide rails (105). An adjustment assembly disposed on one side of the fixing frame (101) is used to adjust the tension of the plastic film (104) during testing. The adjustment assembly includes: a crossbar (203), a lifting rod (302), and a lifting groove (303). A cleaning assembly disposed on one side of the fixing frame (101) is used to clean the surface of the plastic film (104). The cleaning assembly includes a cleaning roller (601), a support frame (7), and a dust collection box (702).
2. The plastic film surface defect detection device according to claim 1, characterized in that, The fixed frame (101) has two limiting grooves (2) inside, and each of the two limiting grooves (2) is equipped with a limiting rod (201). A connecting rod (202) is slidably connected to the outside of the limiting rod (201). A crossbar (203) is provided on one side of the fixed frame (101). One end of each of the two connecting rods (202) is connected to one side of the crossbar (203). A motor a (207) is installed on one side of each of the two sliders (106). An electric roller (204) is driven and connected to one side of the motor a (207) through a drive shaft. The electric roller is rotatably connected to one side of the crossbar (203) through a bearing. A discharge roller (205) is installed on the outside of one of the electric rollers (204), and a receiving roller (206) is installed on the outside of the other electric roller (204).
3. The plastic film surface defect detection device according to claim 2, characterized in that, The workbench (1) is equipped with a motor b (3). The fixed frame (101) has a lifting groove (303) corresponding to the top of the motor b (3). The top of the motor b (3) is connected to a lead screw a (301). One end of the lead screw a (301) is rotatably connected to the inside of the lifting groove (303). A lifting rod (302) is provided on the outside of the lead screw a (301). One end of the lead screw a (301) passes through the lifting rod (302) and is threadedly connected to the lifting rod (302). One end of the lifting rod (302) is connected to one side of the crossbar (203).
4. The plastic film surface defect detection device according to claim 3, characterized in that, The top of the fixed frame (101) is provided with a moving groove (4). A motor c (401) is installed on the top of the fixed frame (101). Two mounting brackets (402) are provided on the top of the fixed frame (101). Both ends of the two mounting brackets (402) pass through the corresponding moving grooves (4) and are rotatably connected to the adjusting rollers (405) via rotating shafts. A lead screw b (403) is driven and connected to one side of the motor c (401). The surface of the lead screw b (403) is provided with threads with opposite directions of rotation at both ends. A fixed plate (404) is installed on the top of the fixed frame (101). Both mounting brackets (402) have threaded holes corresponding to the lead screw b (403) inside. One end of the lead screw b (403) passes through the two mounting brackets (402) and is rotatably connected to the fixed plate (404) via bearings.
5. The plastic film surface defect detection device according to claim 1, characterized in that, A connecting plate (5) is installed on one side of the fixing frame (101), and a motor d (501) is installed on the top of the connecting plate (5). A gear a (502) is driven and connected to one side of the fixing frame (101) via a drive shaft, and a gear b (503) is meshed on the top of the gear a (502).
6. The plastic film surface defect detection device according to claim 5, characterized in that, A rotating rod (6) is connected to one side of both gear a (502) and gear b (503). A cleaning roller (601) is connected to one side of each of the two rotating rods (6). The two cleaning rollers (601) are respectively attached to the top and bottom of the plastic film (104). A dust suction groove (602) is provided on one side of each of the two cleaning rollers (601). A support frame (7) is connected to one side of the dust suction groove (602). One end of the support frame (7) is connected to one side of the fixed frame (101).
7. The plastic film surface defect detection device according to claim 6, characterized in that, One end of each of the two cleaning rollers (601) is rotatably connected to one side of the support frame (7) via a rotating shaft. One side of each of the two dust collection slots (602) is connected to a dust collection pipe (701). One side of the fixed frame (101) is equipped with a dust collection box (702). One end of each of the two dust collection pipes (701) passes through the fixed frame (101) and extends into the dust collection box (702). The dust collection box (702) is equipped with a dust collection bag (703) for adsorbing debris. One side of the dust collection bag (703) is equipped with an exhaust fan (704). One side of the dust collection box (702) is provided with a filter screen (705). One side of the dust collection box (702) is rotatably connected to a sealing plate (706) via a hinge.