A film inspection apparatus

Abstract

This utility model discloses a film detection device, belonging to the technical field of film processing equipment. It includes a frame, an unwinding roller, a rewinding roller, and an adjustment mechanism, a limiting mechanism, and a cutting mechanism arranged sequentially along the film conveying path. The adjustment mechanism drives a support frame equipped with a stroboscopic detector to move via a first electric push rod to precisely adjust the film tension. The limiting mechanism drives a second limiting roller to move via a second electric push rod to clamp the film, and drives a pair of limiting plates to move via a handwheel-driven bidirectional screw to laterally limit films of different widths. The cutting mechanism drives a cutter to cut the film via a cylinder. This utility model solves the problems of low detection accuracy, inaccurate cutting positioning, and poor width adaptability caused by unstable film tension in the prior art, and has the beneficial effects of accurate detection, precise cutting, high automation, and wide applicability.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing equipment technology, and in particular to a thin film testing device. Background Technology

[0002] Thin film materials, as a basic material, are widely used in many industrial fields such as packaging, electronics, and optics. Their surface quality is directly related to the performance and appearance of downstream products. Therefore, effective surface defect detection is a key step in ensuring product qualification rate during the thin film production process.

[0003] In existing production practices, optical equipment such as stroboscopic detectors are commonly used to perform online inspection of high-speed moving films. However, during the high-speed unwinding and conveying of the film from the roll, due to factors such as uneven winding tension and fluctuations in conveying speed, the tension of the film itself is often difficult to maintain a constant. This instability in tension can cause local relaxation or wrinkles on the film surface. When the film passes through the inspection area in this uneven state, it will seriously affect the imaging quality and focusing accuracy of the optical inspection system, resulting in missed detections or misjudgments, and reducing the reliability of the inspection.

[0004] Some simpler devices can only mark the defect locations, still requiring subsequent manual intervention for cutting and removal. This not only interrupts the continuity of production but is also inefficient and increases labor costs. Although some devices with integrated online cutting functions have emerged in the existing technology, they often lack effective measures to fix the film when performing the cutting action. The high-speed moving film is prone to slight displacement or shaking when impacted by the cutter, resulting in inaccurate cutting positions and affecting the quality of the final product.

[0005] In addition, most existing testing devices have poor adaptability to film width. When different specifications (widths) of film need to be replaced on the production line, it is usually necessary to stop the machine and make complex mechanical adjustments to the guiding and limiting components of the equipment. This process is time-consuming and labor-intensive, which greatly reduces the flexibility of the production line and the overall operating efficiency. Therefore, a film testing device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this application is to provide a thin film inspection device, which aims to improve the problems existing in the prior art, such as decreased inspection accuracy due to unstable film tension, inaccurate cutting and positioning of defective films, poor adaptability to films of different widths, and inconvenience in adjustment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A film inspection device includes: a frame, an unwinding roller mounted on the frame, a first motor for driving the unwinding roller, and a winding roller; as well as an adjustment mechanism, a limiting mechanism, and a cutting mechanism.

[0008] The adjustment mechanism has a fixed frame and a support frame, which are movably connected to the fixed frame. The support frame is equipped with a stroboscopic detector for detecting the surface of the thin film and a first support rod for supporting the thin film.

[0009] Furthermore, the limiting mechanism includes a fixed first limiting rod, a movable second limiting rod that cooperates with the first limiting rod, and a limiting plate that can move towards or away from each other. The cutting mechanism includes a cutter. The adjusting mechanism, the limiting mechanism, and the cutting mechanism are sequentially arranged on the frame along the film conveying path.

[0010] Preferably, the adjustment mechanism further includes a slide groove fixed on the fixed frame, the connecting frame slides with the slide groove through a slider fixed thereon, the first electric push rod is connected between the fixed frame and the connecting frame, and the support frame is fixed on the connecting frame.

[0011] Preferably, the limiting mechanism further includes a fixed first support block and a movable second support block, the first limiting rod is rotatably mounted on the first support block, the second limiting rod is mounted on the second support block, and the second electric push rod is connected between the first support block and the second support block.

[0012] Preferably, the limiting mechanism further includes a handwheel, a bidirectional screw connected to the handwheel, and a second support rod. The pair of limiting plates are respectively threaded onto the bidirectional screw and slidably disposed on the outer wall of the second support rod.

[0013] Preferably, the limiting mechanism further includes a second motor, which is connected to the first limiting roller in a transmission manner to provide auxiliary power for film conveying.

[0014] Preferably, the cutting mechanism further includes a bracket, a cylinder, and a slide, the slide being slidably connected to the bracket and connected to the output end of the cylinder, and the cutter being mounted on the slide.

[0015] Preferably, the cutting mechanism further includes a buffer plate, which is disposed on the movement path of the slide to absorb the impact generated by the cutting action.

[0016] Preferably, a first auxiliary roller and a second auxiliary roller are provided between the unwinding roller and the adjusting mechanism for supporting and guiding the film.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the tension of the film can be actively adjusted by using an electric push rod to drive the support roller, ensuring that the film is in a flat and taut state when passing through the stroboscopic detector, effectively avoiding detection errors caused by film wrinkles or looseness, and significantly improving the accuracy and reliability of surface defect detection.

[0018] 2. In this utility model, a handwheel drives a bidirectional screw, enabling the limiting plates to move synchronously towards or away from each other, which facilitates and quickly limits the lateral movement of films of different widths, enhancing the applicability and versatility of the equipment; an electric push rod drives the limiting roller to clamp and fix the film, ensuring the stability of the film before cutting and improving the accuracy of the cutting position. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a thin film detection device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of the frame of a thin film detection device proposed in this utility model; Figure 3 This is a schematic diagram of the adjustment mechanism of a thin film detection device proposed in this utility model; Figure 4 This is a schematic diagram of the cutter structure of a thin film detection device proposed in this utility model; Figure 5 This is a schematic diagram of the limiting mechanism of a thin film detection device proposed in this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Frame; 2. First motor; 3. Unwinding roller; 4. First auxiliary roller; 5. Second auxiliary roller; 6. Adjustment mechanism; 601. Fixing frame; 602. First electric push rod; 603. Connecting frame; 604. First support roller; 605. Support frame; 606. Strobe detector; 607. Slider; 608. Slide groove; 7. Limiting mechanism; 701. First support block; 702. First limiting roller; 703. Second electric push rod; 704. Second support block; 705. Second limiting roller; 706. Second support roller; 707. Bidirectional screw; 708. Limiting plate; 709. Handwheel; 710. Second motor; 8. Bracket; 9. Cylinder; 10. Slide seat; 11. Cutter; 12. Buffer plate; 13. Rewinding roller. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0022] Reference Figures 1-5The present invention provides an embodiment of a film detection device, which includes a frame 1, a first motor 2, an unwinding roller 3, and a winding roller 13. The frame 1 provides the mounting base for the entire device. The first motor 2 is fixedly mounted on the frame 1. The unwinding roller 3 is rotatably connected to the frame 1 and is drivenly connected to the output end of the first motor 2. The winding roller 13 is rotatably connected to the frame 1. A first auxiliary roller 4 and a second auxiliary roller 5 are also provided between the unwinding roller 3 and the subsequent mechanism. Both the first auxiliary roller 4 and the second auxiliary roller 5 are rotatably connected to the frame 1. The device also includes an adjustment mechanism 6, a limiting mechanism 7, and a cutting mechanism. The adjustment mechanism 6, the limiting mechanism 7, and the cutting mechanism are sequentially fixedly mounted on the frame 1 along the film conveying path.

[0023] The adjustment mechanism 6 includes a fixed frame 601 and a support frame 605. The fixed frame 601 is fixedly installed on the frame 1 and has a sliding groove 608. The connecting frame 603 is slidably connected to the sliding groove 608 through a slider 607 fixed thereon. One end of the first electric push rod 602 is fixedly connected to the fixed frame 601 and the other end is fixedly connected to the connecting frame 603. The support frame 605 is fixed on the connecting frame 603. The first support rod 604 is rotatably connected inside the support frame 605. The strobe detector 606 is fixedly installed on the support frame 605.

[0024] The limiting mechanism 7 is located downstream of the adjusting mechanism 6. The limiting mechanism 7 includes a fixed first support block 701 and a movable second support block 704. The first support block 701 is fixedly mounted on the frame 1. A first limiting roller 702 is rotatably connected to the first support block 701. A second motor 710 is fixedly mounted on the first support block 701 and is drivenly connected to the first limiting roller 702. One end of a second electric push rod 703 is fixedly connected to the first support block 701, and its output end is fixedly connected to the second support block 704. The second support block 704 can move under the drive of the second electric push rod 703. The second limiting rod 705 is rotatably connected to the second support block 704 and is arranged parallel to the first limiting rod 702. The limiting mechanism 7 also includes a handwheel 709, a bidirectional screw 707, and a second support rod 706. The handwheel 709 is connected to the bidirectional screw 707. The bidirectional screw 707 and the second support rod 706 are both rotatably connected to the bracket of the limiting mechanism 7 and are parallel to each other. A pair of limiting plates 708 are threadedly engaged with the left-hand thread section and the right-hand thread section of the bidirectional screw 707 respectively through their internal threads. At the same time, the limiting plates 708 are slidably fitted on the outer wall of the second support rod 706.

[0025] The cutting mechanism is located downstream of the limiting mechanism 7. The cutting mechanism includes a bracket 8, a cylinder 9, a slide 10, and a cutter 11. The bracket 8 is fixedly installed on the frame 1, the cylinder 9 is fixedly installed on the bracket 8, the slide 10 is slidably connected to the bracket 8, the slide 10 is fixedly connected to the piston rod end of the cylinder 9, the cutter 11 is fixedly installed on the slide 10, and a buffer plate 12 is also fixedly installed at the end of the movement path of the slide 10.

[0026] When the device is working, the film to be tested is mounted on the unwinding roller 3. The first motor 2 drives the unwinding roller 3 to rotate and release the film. The film passes through the support and guidance of the first auxiliary roller 4 and the second auxiliary roller 5 in sequence and smoothly enters the adjustment mechanism 6. The control system drives the first electric push rod 602 to extend and retract. The first electric push rod 602 pushes the connecting frame 603. The connecting frame 603 slides in the slide groove 608 through the slider 607, which drives the first support roller 604 on it to move up and down to adjust the tension of the film. At the same time, the stroboscopic detector 606 mounted on the support frame 605 performs online detection on the flat and taut surface of the film.

[0027] After inspection, the film enters the limiting mechanism 7. The control system drives the second electric push rod 703 to move, causing the second support block 704 to move the second limiting roller 705 towards the first limiting roller 702, clamping and fixing the film between them. The operator can rotate the handwheel 709, which drives the bidirectional screw 707 to rotate, causing the two limiting plates 708 threaded on the bidirectional screw 707 to move towards or away from each other on the second support roller 706, thereby limiting the two edges of the film to accommodate films of different widths. The second motor 710 drives the first limiting roller 702 to rotate, providing auxiliary power for the forward conveying of the film.

[0028] When the strobe detector 606 detects a defective film, the control system issues a command, the piston rod of the cylinder 9 extends, and pushes the slide 10 to slide rapidly along the bracket 8. The cutter 11 mounted on the slide 10 cuts the film laterally. When the slide 10 moves to the end, it contacts the buffer plate 12, which absorbs the impact energy generated by the cutting action. After the defective part is cut off, the qualified film continues to be conveyed forward and finally reaches the winding roller 13, where it is wound up to complete the entire detection and processing process.

[0029] In this device, frame 1 provides a stable mounting platform for the entire device; first motor 2 provides power to drive unwinding roller 3 to rotate and release the film; first auxiliary roller 4 and second auxiliary roller 5 support and initially guide the released film; adjustment mechanism 6 adjusts the tension of the film before inspection; limiting mechanism 7 clamps and laterally limits the film before cutting; cutting mechanism quickly cuts the unqualified film; and winding roller 13 rewinds the qualified film into a roll.

[0030] For the standard power components and their control circuits such as the first motor 2, the second motor 710, the first electric push rod 602, the second electric push rod 703, and the cylinder 9 involved in this embodiment, those skilled in the art can select commercially available mature products and implement their drive control according to actual needs. Their internal structure and specific control methods are well-known technologies in the field and will not be described in detail here.

[0031] Working principle: First, the film roll to be tested is installed on the unwinding roller 3. The first motor 2 is started, and the output of the first motor 2 drives the unwinding roller 3 to rotate, thereby smoothly releasing the film. During the conveying process, the released film passes through the first auxiliary roller 4 and the second auxiliary roller 5 in sequence. These two auxiliary rollers support and guide the film, ensuring that the film can enter the subsequent adjustment mechanism 6 in a stable state. In the adjustment mechanism 6, the first electric push rod 602 extends and retracts according to the preset or real-time monitored tension requirements, which pushes the connecting frame 603. The connecting frame 603 then slides up and down in the groove 608 of the fixed frame 601 through the slider 607 on it. This action brings The support frame 605 fixed on the connecting frame 603 and the first support rod 604 rotatably connected inside the support frame 605 move up and down synchronously. By changing the height of the first support rod 604, the length of the film conveying path is adjusted, thereby precisely controlling the tension of the film to achieve the best detection state. At the same time, the stroboscopic detector 606 fixed on the support frame 605 performs comprehensive stroboscopic irradiation and image acquisition on the rapidly moving but tension-stable film surface to detect any defects. After detection, the film continues to enter the limiting mechanism 7. The second electric push rod 703 is activated, driving the second support block 704 together with the second limiting rod 705 on it to move towards the fixed first support rod 705. The limiting rollers 702 come together to gently and firmly clamp the film between them, preventing it from shifting during subsequent cutting. To accommodate films of different widths, the operator can rotate the handwheel 709, which drives the bidirectional screw 707 to rotate via a transmission mechanism. Because the bidirectional screw 707 has threaded sections with opposite directions of rotation, its rotation causes the two limiting plates 708, which are threaded onto the two threaded sections, to slide synchronously toward or away from each other on the outer wall of the second support roller 706, thereby achieving precise positioning and restriction of the two sides of the film. During this process, the second motor 710 drives the first limiting roller 702 to rotate, providing auxiliary traction for the smooth transport of the film. When the stroboscopic detector 606 detects a defective portion of the film and transports it to the cutting position, the control system immediately commands the cylinder 9 to operate. The piston rod of the cylinder 9 extends rapidly, pushing the slide 10 connected to it to slide at high speed on the bracket 8. The cutter 11 fixed on the slide 10 then precisely cuts the film laterally, removing the defective portion. After completing the cutting stroke, the slide 10 impacts the buffer plate 12, which absorbs the impact energy and protects the mechanical structure. The qualified film after cutting is finally transported to the winding roller 13, which rotates under drive to neatly wind it into a roll, thus completing the entire automated detection and processing process.

Claims

1. A film inspection device, comprising a frame (1), an unwinding roller (3) mounted on the frame (1), a first motor (2) for driving the unwinding roller (3), and a take-up roller (13), characterized in that, Also includes: Adjustment mechanism (6), the adjustment mechanism (6) includes a fixed frame (601) and a support frame (605), the support frame (605) is movably connected to the fixed frame (601), and a strobe detector (606) and a first support rod (604) are installed on the support frame (605). The limiting mechanism (7) is located downstream of the adjusting mechanism (6) on the film conveying path. The limiting mechanism (7) includes a fixed first limiting rod (702), a movable second limiting rod (705) that cooperates with the first limiting rod (702), and a pair of limiting plates (708) that can move towards or away from each other. A cutting mechanism is disposed downstream of the limiting mechanism (7), and the cutting mechanism includes a cutter (11).

2. The thin film detection device according to claim 1, characterized in that, The adjustment mechanism (6) further includes a slide groove (608) fixed on the fixed frame (601), a slider (607) that slides with the slide groove (608), a connecting frame (603) fixed with the slider (607), and a first electric push rod (602) connected between the fixed frame (601) and the connecting frame (603); the support frame (605) is fixed on the connecting frame (603).

3. The thin film detection device according to claim 1, characterized in that, The limiting mechanism (7) further includes a fixed first support block (701) and a movable second support block (704); the first limiting rod (702) is rotatably mounted on the first support block (701), and the second limiting rod (705) is mounted on the second support block (704); the limiting mechanism (7) further includes a second electric push rod (703), one end of which is connected to the first support block (701), and the other end of which is connected to the second support block (704).

4. The thin film detection device according to claim 3, characterized in that, The limiting mechanism (7) further includes a handwheel (709), a bidirectional screw (707) connected to the handwheel (709) for transmission, and a second support rod (706); the bidirectional screw (707) is arranged parallel to the second support rod (706); a pair of limiting plates (708) are respectively threaded onto the bidirectional screw (707) and slidably disposed on the outer wall of the second support rod (706).

5. The thin film detection device according to claim 3, characterized in that, The limiting mechanism (7) also includes a second motor (710), which is connected to the first limiting roller (702) in a transmission connection.

6. The thin film detection device according to claim 1, characterized in that, The cutting mechanism also includes a bracket (8), a cylinder (9) and a slide (10); the bracket (8) is mounted on the frame (1) and the cylinder (9) is mounted on the bracket (8); the slide (10) is slidably connected to the bracket (8) and connected to the output end of the cylinder (9); the cutter (11) is mounted on the slide (10).

7. The thin film detection device according to claim 6, characterized in that, The cutting mechanism also includes a buffer plate (12), which is disposed on the movement path of the slide (10).

8. The thin film detection device according to claim 1, characterized in that, A first auxiliary roller (4) and a second auxiliary roller (5) are also provided between the unwinding roller (3) and the adjusting mechanism (6).

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