Plastic film crack detection device

Abstract

The utility model relates to the technical field of film detection, in particular to a plastic film crack detection device, which comprises a bracket, a detection device and a control device, the unwinding roller is rotatably arranged on the bracket; the winding roller is rotatably arranged on the bracket; the driving part is connected with the winding roller and used for winding the clinker film; the spraying mechanism is arranged between the unwinding roller and the winding roller and used for spraying water to the plastic film between the unwinding roller and the winding roller; the plurality of electrodes are connected with the power supply, are arranged on one side, close to the winding roller, of the spraying mechanism, and are arranged on the same side of the plastic film with the spraying mechanism; the electric detection mechanism is arranged on the back side, corresponding to the electrode, of the plastic film and abuts against the plastic film; the controller is electrically connected with the electric detection mechanism; and the marking mechanism is arranged corresponding to the plastic film between the electric detection mechanism and the winding roller and is electrically connected with the controller. The utility model discloses a plastic film crack detection device, and aims to solve the problems of inconvenience in use and high cost in film detection in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of film detection technology, and more specifically, to a plastic film crack detection device. Background Technology

[0002] Detection of cracks in plastic film is an important step in ensuring product quality, improving production efficiency, and reducing quality costs.

[0003] Existing methods for detecting cracks in plastic films generally include visual inspection and automated inspection. Visual inspection involves operators visually inspecting the film surface for cracks. This method is simple and intuitive, but it is susceptible to subjective human factors, which can affect the quality of the inspection. Automated inspection uses a light source to illuminate the film surface, a camera captures an image, and image processing software analyzes the image to identify the location, size, and shape of the crack. Automated inspection can accurately identify larger cracks, but it struggles to accurately identify linear cracks. Furthermore, automated inspection requires real-time image acquisition and processing, increasing inspection costs and reducing efficiency.

[0004] Therefore, there is a need to design an easy-to-use and low-cost detection device. Utility Model Content

[0005] The main purpose of this invention is to propose a plastic film crack detection device, which aims to solve the problems of inconvenience and high cost of film detection in the prior art.

[0006] To address the aforementioned technical problems, a plastic film crack detection device is proposed, comprising: a support;

[0007] An unwinding roller, rotatably mounted on the support, is used for unwinding plastic film;

[0008] A take-up roller, rotatably mounted on the support, is used for winding up the plastic film;

[0009] A drive unit, connected to the take-up roller, is used to take up the cooked film;

[0010] A spraying mechanism is disposed between the unwinding roller and the take-up roller, and is used to spray water onto the plastic film between the unwinding roller and the take-up roller;

[0011] Several electrodes, connected to a power source, are disposed on the side of the spraying mechanism near the take-up roller, and on the same side of the plastic film as the spraying mechanism, for releasing charge onto the plastic film;

[0012] An electrical detection mechanism is disposed on the back side of the plastic film corresponding to the electrode, and abuts against the plastic film to receive electrical charge;

[0013] The controller is electrically connected to the electrical detection mechanism;

[0014] A marking mechanism is provided between the electrical detection mechanism and the take-up roller and the plastic film, and is electrically connected to the controller for marking the plastic film.

[0015] In any of the above technical solutions, further comprising:

[0016] The tensioning roller has a groove on its support and is slidably mounted in the groove. The tensioning roller is used to tension plastic film.

[0017] The first spring and the second spring are respectively disposed on both sides of the tensioning roller and are evenly abutted against the tensioning roller.

[0018] In any of the above technical solutions, further comprising:

[0019] The first guide roller, the second guide roller, and the third guide roller all come into contact with the plastic film and are used to adjust the direction of the plastic film.

[0020] The first guide roller is disposed on the side close to the unwinding roller, the third guide roller is disposed on the side close to the take-up roller, and the second guide roller is disposed between the first guide roller and the second guide roller;

[0021] The plastic film between the second guide roller and the third guide roller is horizontally positioned, and the height of the first guide roller is higher than the height of the second guide roller.

[0022] In any of the above technical solutions, further comprising:

[0023] The fourth guide roller, which abuts against the plastic film, is positioned between the third guide roller and the take-up roller, and the height of the fourth guide roller is lower than the height of the third guide roller.

[0024] In any of the above technical solutions, further comprising:

[0025] A blower mechanism is provided between the fourth guide roller and the take-up roller to dry the moisture on the plastic film.

[0026] The beneficial effects are:

[0027] 1. The plastic film crack detection device of this utility model drives and winds up the plastic film on the unwinding roller through a winding roller and a driving component. Several electrodes and an electrical detection mechanism are set between the winding roller and the unwinding roller. The electrodes release charges to the plastic film. When there is a crack in the plastic film, the charges can penetrate the plastic film and move to its lower side, and be detected by the electrical detection mechanism. At the same time, the controller electrically connected to the electrical detection mechanism controls the marking mechanism to mark the plastic film, which facilitates the subsequent processing of the location of the crack.

[0028] 2. At the same time, the plastic film crack detection device of this utility model is equipped with a spraying mechanism, which is located on the side closer to the unwinding roller than the electrode. It can spray water mist onto the plastic film before the electrode works, which can evenly distribute the charge on the plastic film and promote the conductivity at the crack, making it easier for the electrical detection mechanism to detect.

[0029] 3. The plastic film crack detection mechanism of this utility model does not require spraying a large amount of water onto the film, saving water consumption, and will not further tighten the plastic film due to the amount of water used, thus reducing the deformation impact on the plastic film during the detection process. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of a plastic film crack detection device according to an embodiment of the present invention;

[0032] Figure 2 This is a partial structural schematic diagram of a plastic film crack detection device according to an embodiment of the present invention.

[0033] The annotations in the attached figures are explained as follows:

[0034] 1. Bracket;

[0035] 2. Unwinding roll; 201. Rewinding roll; 202. Drive unit;

[0036] 3. Spraying mechanism;

[0037] 4. Electrodes;

[0038] 5. Electrical testing institutions;

[0039] 6. Marking mechanism;

[0040] 7. Tensioning roller; 701. First spring; 702. Second spring;

[0041] 8. First guide roller; 801. Second guide roller; 802. Third guide roller; 803. Fourth guide roller; 804. Fifth guide roller;

[0042] 9. Blower mechanism. Detailed Implementation

[0043] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0044] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0045] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0048] The following embodiments will provide a detailed description of a plastic film crack detection device of this application.

[0049] In this embodiment, as Figure 1 and Figure 2 As shown, the plastic film crack detection device includes: a bracket 1;

[0050] The unwinding roller 2 is rotatably mounted on the support 1 and is used for unwinding the plastic film.

[0051] The take-up roller 201 is rotatably mounted on the bracket 1 and is used for taking up plastic film.

[0052] The drive unit 202 is connected to the take-up roller 201 and is used to take up the gluten film;

[0053] The spraying mechanism 3 is disposed between the unwinding roller 2 and the take-up roller 201 and is used to spray water onto the plastic film between the unwinding roller 2 and the take-up roller 201.

[0054] Several electrodes 4, connected to a power source, are disposed on the side of the spraying mechanism 3 near the take-up roller 201, and on the same side of the plastic film as the spraying mechanism 3, for releasing charge onto the plastic film.

[0055] The electrical detection mechanism 5 is located on the back side of the plastic film corresponding to the electrode 4, and abuts against the plastic film to receive electrical charge;

[0056] The controller (not shown in the figure) is electrically connected to the electrical detection mechanism 5;

[0057] The marking mechanism 6 is located between the electrical detection mechanism 5 and the take-up roller 201 and is electrically connected to the controller. It is used to mark the plastic film.

[0058] In this technical solution, the bracket 1 includes two vertically arranged support plates symmetrically arranged front and back. The left and right ends of the support plates are provided with slots for the unwinding roller 2 and the take-up roller 201 to engage respectively. The front support plate is provided with a driving component 202 at the position corresponding to the take-up roller 201. The driving component 202 is a drive motor that can drive the take-up roller 201 to take up the plastic film roll on the unwinding roller 2.

[0059] The spraying mechanism 3 is equipped with several first nozzles, which are evenly arranged on the upper side of the plastic film. Each first nozzle is connected to a water source through a valve and a water pump, enabling it to spray water mist onto the upper side of the plastic film. Electrode 4 is connected to a pulse power supply. Electrode 4 is a single electrode, powered by the pulse power supply box, which causes electrode 4 to intermittently release charge onto the upper side of the plastic film.

[0060] The electrical detection mechanism 5 is positioned directly below the electrode 4. The mechanism includes a spiral resistance wire, with its two ends connected by wires to form an electrical circuit. The top surface of the spiral resistance wire abuts against the bottom surface of the plastic film. When charge moves through a crack in the plastic film to the lower side, the spiral resistance wire guides the charge to flow in the circuit. A controller (not shown) is connected to the circuit of the electrical detection mechanism 5. When charge flows within the circuit of the electrical detection mechanism 5, the controller detects an electrical signal, indicating a crack in the plastic film at the current location. The current location is then marked by the marking mechanism 6 for subsequent processing.

[0061] The marking mechanism 6 is equipped with a second nozzle connected to the ink source. A pump and a valve are provided between the second nozzle and the ink source. When the controller detects an electric charge, the controller controls the pump and valve of the marking mechanism 6 to open, and ink is sprayed onto the plastic film through the second nozzle to achieve the marking purpose, so that the staff can confirm the location of the crack during subsequent processing.

[0062] In some technical solutions, an insulating plate (not shown in the figure) is provided between each electrode 4 to avoid mutual influence of charges between adjacent electrodes 4 and to promote charge dissipation.

[0063] The detection device of this application can continuously detect cracks in plastic film rolls without shutting down the machine. The detection method is simple, easy to use, and has high detection efficiency.

[0064] In this embodiment, it also includes:

[0065] The tension roller 7 has a groove on the bracket 1 and is slidably mounted in the groove. The tension roller 7 is used to tension plastic film.

[0066] The first spring 701 and the second spring 702 are respectively disposed on both sides of the tensioning roller 7 and are evenly abutted against the tensioning roller 7.

[0067] In this technical solution, two tensioning rollers 7 are symmetrically arranged on the left and right sides. A vertically arranged waist-shaped groove is provided on the support 1. The tensioning rollers 7 are horizontally arranged front and back, and both ends of the tensioning rollers 7 are slidably and rotatably mounted in the groove via mounting blocks. Two horizontal support plates, one above the other, are provided on the side wall of the support 1 outside the groove. A first spring 701 is located on the upper side of the tensioning roller 7, with both ends abutting against the upper support plate and the mounting block, respectively. A second spring 702 is located on the lower side of the tensioning roller 7, with both ends abutting against the lower support plate and the mounting block, respectively. This arrangement is used to tension the plastic film between the unwinding roller 2 and the take-up roller 201.

[0068] In some technical solutions, a motor is also provided at the unwinding roller 2 to drive the rotation of the unwinding roller 2, which controls the unwinding speed on the one hand, and facilitates the maintenance of the tension of the plastic film during operation on the other hand.

[0069] In this embodiment, it also includes:

[0070] The first guide roller 8, the second guide roller 801, and the third guide roller 802 all abut against the plastic film and are used to adjust the direction of the plastic film.

[0071] The first guide roller 8 is located on the side close to the unwinding roller 2, the third guide roller 802 is located on the side close to the take-up roller 201, and the second guide roller 801 is located between the first guide roller 8 and the second guide roller 801.

[0072] The plastic film between the second guide roller 801 and the third guide roller 802 is horizontally positioned, and the height of the first guide roller 801 is higher than the height of the second guide roller 801.

[0073] In this technical solution, the first guide roller 8 is located on the upper right side of the left tension roller 7, the second guide roller 801 is located on the lower right side of the first guide roller 8, and the third guide roller 802 is located on the lower right side of the second guide roller 801. The plastic film on the unwind roller 2 passes over the lower side of the left tension roller 7, the upper side of the first guide roller 8, the lower side of the second guide roller 801, the upper side of the third guide roller 802, and the lower side of the right tension roller 7, and connects to the take-up roller 201. The plastic film between the second guide roller 801 and the third guide roller 802 is horizontally positioned.

[0074] A plastic film is horizontally positioned between the second guide roller 801 and the third guide roller 802 to prevent water mist sprayed by the spraying mechanism 3 from accumulating on the plastic film. Furthermore, by utilizing the fact that water has a higher conductivity than plastic film, the charge released by the electrode 4 is evenly dispersed.

[0075] Setting the first guide roller 8 increases the movement height of the plastic film on the left side of the second guide roller 801, which can also prevent moisture from moving to the left and minimize the impact of the uniformity of moisture distribution on subsequent electrical detection.

[0076] In this embodiment, it also includes:

[0077] The fourth guide roller 803, which abuts against the plastic film, is positioned between the third guide roller 802 and the take-up roller 201. The height of the fourth guide roller 803 is lower than the height of the third guide roller 802.

[0078] In this technical solution, the fourth guide roller 803 is located on the lower right side of the third guide roller 802, and the plastic film moves to the right around the lower side of the fourth guide roller 803. The fourth guide roller 803 is positioned to facilitate the collection of moisture on the plastic film after inspection, and the squeezing action between the fourth guide roller 803 and the film will expel some of the moisture, thus facilitating subsequent drying.

[0079] In this embodiment, it also includes:

[0080] The blower mechanism 9 is positioned between the fourth guide roller 803 and the take-up roller 201 to dry the moisture on the plastic film.

[0081] In this technical solution, the blower mechanism 9 is a fan located above the right side of the fourth guide roller 803. The blower mechanism 9 is set to increase the speed of moisture evaporation, which facilitates winding.

[0082] In some technical solutions, a fifth guide roller 804 is also provided. The fifth guide roller 804 is located to the upper right of the fourth guide roller 803 and to the upper left of the tension roller 7 on the right side. The fifth guide roller 804 increases the movement distance of the plastic film at the blower mechanism 9, which facilitates the drying of moisture on the plastic film.

[0083] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A plastic film crack detection device, characterized in that, The utility model relates to a plastic film spraying and marking device, including: Support (1); Unwinding roller (2) rotatable be provided on the support (1), be used for the unwinding of plastic film; Winding roller (201) rotatable be provided on the support (1), be used for the winding of plastic film; Driving part (202) is connected with the winding roller (201), is used for winding plastic film; Spraying mechanism (3) is set up between the unwinding roller (2) and the winding roller (201), is used for spraying water to the plastic film between the unwinding roller (2) and the winding roller (201); Several electrodes (4) are connected with power supply, are set up in the side of spraying mechanism (3) near the winding roller (201), are set up on the same side of plastic film with spraying mechanism (3), are used for releasing electric charge to plastic film; Electric detection mechanism (5) is set up on the back side of plastic film at the corresponding place of electrode (4), is in contact with plastic film, is used for receiving electric charge; Controller is electrically connected with electric detection mechanism (5); Marking mechanism (6) is set up in the plastic film between electric detection mechanism (5) and winding roller (201), is electrically connected with the controller, is used for marking plastic film.

2. The plastic film crack detection apparatus according to claim 1, wherein Further including: Tensioning roller (7) is provided with sliding slot on the support (1), is slidably arranged in the sliding slot, and the tensioning roller (7) is used for tensioning plastic film; First spring (701) and second spring (702) are arranged on the both sides of the tensioning roller (7) respectively, and the tensioning roller (7) is abutted uniformly.

3. The plastic film crack detection apparatus of claim 1, wherein Further including: First guide roller (8), second guide roller (801) and third guide roller (802) are in contact with plastic film and are used for adjusting the trend of plastic film; The first guide roller (8) is arranged on the side near the unwinding roller (2), the third guide roller (802) is arranged on the side near the winding roller (201), and the second guide roller (801) is arranged between the first guide roller (8) and the second guide roller (801); The plastic film between the second guide roller (801) and the third guide roller (802) is arranged horizontally, and the height of the first guide roller (8) is higher than the height of the second guide roller (801).

4. The plastic film crack detection apparatus according to claim 3, wherein Further including: Fourth guide roller (803) is in contact with plastic film, is arranged between the third guide roller (802) and the winding roller (201), and the height of the fourth guide roller (803) is lower than the height of the third guide roller (802).

5. The plastic film crack detection apparatus according to claim 4, wherein Further including: Air blowing mechanism (9) is arranged corresponding to the plastic film between the fourth guide roller (803) and the winding roller (201), and is used for air drying the moisture on the plastic film.

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