PVC color film flaw detection mechanism

Abstract

The utility model belongs to the technical field of PVC (polyvinyl chloride) color film processing, and particularly relates to a PVC color film defect detection mechanism, which comprises an unwinding mechanism and a winding mechanism, and the unwinding mechanism and the winding mechanism are arranged at two ends of a detection platform; a horizontal LED lamp box is arranged at one end, close to the unwinding mechanism, of the detection platform; an X-axis fixed-point glue injection device is arranged on the side, away from the unwinding mechanism, of the LED lamp box. A hot pressing device is arranged on one side, far away from the LED lamp box, of the X-axis fixed-point glue injection device; through modular design, automatic positioning, processing and repairing of flaws are achieved, the automation level of flaw detection is further improved, operation and maintenance are easy, and function expansion or adjustment can be carried out according to actual requirements so as to meet the detection requirements of PVC color films of different specifications and different materials.

Description

TECHNICAL FIELD

[0001] The utility model belongs to PVC color film processing technical field, specifically related to a PVC color film flaw detection mechanism. BACKGROUND

[0002] PVC (polyvinyl chloride) color film is a kind of material widely used in decoration and protection field. It has the characteristics of rich color, various patterns, waterproof and moisture-proof, easy cleaning, etc., so it is widely used in home decoration, commercial places, car film, etc.

[0003] According to the different use requirements of PVC color film, in order to improve product quality, accurately identify the flaws on PVC color film, such as bubbles, scratches, impurities, color difference, etc., ensure that only the color film meeting the quality standard enters the market, and optimize production efficiency to identify and exclude the flawed products in time, avoid waste in subsequent processing, PVC color film detection device is also an essential part of color film production line. However, the existing detection device needs to rely on manual visual inspection, which is easy to miss and increase production cost. In order to improve consistency and reliability, high-speed camera is added in the device for matrix capture to accurately find the flaws on the surface of color film and mark, and then manual repair is carried out. But in this way, the use of marked film cloth and manual repair process still consumes a lot of time, which is contrary to the original intention of production line automation and improving overall production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a PVC color film flaw detection mechanism, including unwinding mechanism and winding mechanism, the unwinding mechanism with the winding mechanism is located at the both ends of detection platform, the detection platform is close to the one end of unwinding mechanism and is provided with a horizontal LED light box, the side, away from the unwinding mechanism of LED light box is provided with X axis fixed point glue injection device, the side, away from the LED light box of X axis fixed point glue injection device is provided with hot-pressing device.

[0005] Preferably, the LED light box is a high-brightness LED linear spotlight cold light source, and an industrial line array CCD camera is matched above the LED light box.

[0006] Preferably, the X axis fixed point glue injection device includes a support frame, the support frame is installed on the detection platform, reciprocating screw rod module is arranged on the side of the support frame, an electric glue injection nozzle is installed on the sliding block of reciprocating screw rod module, and the electric glue injection nozzle is connected with a pump body through a rubber tube at the top.

[0007] Preferably, the pump body is arranged in the rubber compound tank.

[0008] Preferably, the hot-pressing device comprises a mounting frame fixed to the detection platform, and a hot-pressing roller is mounted above the detection platform.

[0009] Preferably, the hot-pressing roller is mounted to the telescopic end of a pneumatic cylinder through a hot-pressing roller seat, and the pneumatic cylinder is fixed to the mounting frame.

[0010] Preferably, the hot-pressing roller is internally provided with a resistance wire.

[0011] The present application has the following beneficial effects:

[0012] By arranging the detection device at the middle section of the unwinding and winding, and integrating the LED light box, the industrial line array CCD camera, the X-axis fixed-point glue injection device and the hot-pressing device, a complete process from flaw detection to automatic processing is realized, and the automation level of the overall process is further improved.

[0013] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application are realized and obtained by the structure specifically pointed out in the description and the drawings.

[0014] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0016] Fig. 1 is a schematic view of the overall structure of the embodiment of the present application;

[0017] Fig. 2 is an enlarged view of the X-axis fixed-point glue injection device of the embodiment of the present application;

[0018] Fig. 3 is an enlarged view of the hot-pressing device of the embodiment of the present application.

[0019] In the drawings:

[0020] 1. Testing platform; 2. LED light box; 3. X-axis fixed-point glue injection device; 4. Support frame; 5. Reciprocating screw module; 6. Electric glue injection nozzle; 7. Glue hose; 8. Glue bin; 9. Hot pressing device; 10. Mounting frame; 11. Hot pressing roller; 2. Cylinder; 30. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figs. 1-3 As shown, this embodiment provides a PVC film defect detection mechanism. All structures mentioned in the embodiment adopt modular and automated integrated control and are electrically connected to the main control terminal. It includes an unwinding mechanism and a rewinding mechanism, which are located at opposite ends of a detection platform 1. A horizontal LED lightbox 2 is located at the end of the detection platform 1 closest to the unwinding mechanism. An X-axis fixed-point glue injection device 3 is located on the side of the LED lightbox 2 away from the unwinding mechanism. A hot-pressing device 4 is located on the side of the X-axis fixed-point glue injection device 3 away from the LED lightbox 2. The unwinding and rewinding mechanisms for automatic unwinding and rewinding of PVC film use existing devices and are therefore not shown in the illustration. This embodiment mainly explains the production process on the detection platform 1: such as... Fig. 1 As shown, the PVC colored film driven by the winding mechanism passes through the LED light box 2, the X-axis fixed-point glue injection device 3, and the hot pressing device 4 in sequence.

[0023] The LED lightbox 2 contains a high-brightness LED linear focusing cold light source, with an industrial line-scan CCD camera positioned directly above it. The LED linear focusing cold light source features low energy consumption, high brightness, and long lifespan. The industrial line-scan CCD camera is a commonly used camera in production lines in this field, used to capture high-definition images of the PVC film surface. By adjusting the brightness and angle of the LED lightbox 2, imperfections on the PVC film surface can be ensured to be clearly visible in the image. Simultaneously, the captured image is uploaded to a backend system, and a coordinate system is established using the PVC film as a plane. The area and location of the imperfection are determined by the coordinate points of the imperfection outline.

[0024] The X-axis fixed-point glue injection device 3 comprises a support frame 301, the support frame 301 is installed on the detection platform 1, and a reciprocating screw rod module 302 is arranged on the side of the support frame 301; a sliding block of the reciprocating screw rod module 302 is provided with an electric glue injection nozzle 303; and the electric glue injection nozzle 303 is connected with a pump body through a glue pipe 304 at the top. The pump body is arranged in a glue tank 305. The reciprocating screw rod module 302 drives the electric glue injection nozzle 303 to move reciprocally in the X-axis direction through the sliding block. The movement mode ensures that the electric glue injection nozzle 303 can accurately reach the defect position. Since the specific coordinates of the defect have been analyzed in the previous detection process, the electric glue injection nozzle 303 is translated to the corresponding X-axis coordinates, and glue is injected at the front end of the movement direction of the defect in combination with the winding speed of the PVC color film and the area size of the defect. The amount of glue injection is controlled by the pump body.

[0025] The hot pressing device 4 comprises a mounting frame 401 fixed with the detection platform 1, and a hot pressing roller 402 is installed above the detection platform 1. The hot pressing roller 402 is installed on the telescopic end of a pneumatic cylinder 403 through a hot pressing roller 402 seat, and the pneumatic cylinder 403 is fixed on the mounting frame 401. Resistance wires are arranged in the hot pressing roller 402, and electromagnetic heating is adopted to ensure uniform heating temperature. When the terminal calculates that the PVC color film with the injected glue and the defect position is about to pass through the hot pressing device 4, the telescopic movement of the pneumatic cylinder 403 drives the hot pressing roller 402 to press down, and the terminal slows down the winding speed of the winding mechanism at the same time, so that the injected glue part is extruded and gradually flattened on the surface of the defect when passing through the hot pressing roller 402, and is shaped and uniformly distributed by the surface heat of the hot pressing roller 402, thereby realizing the repair of the defect part.

[0026] In the present application, each device (parts without specific structure) is a general standard part or a part known to those skilled in the art, and its structure and principle can be known by technical personnel through a technical manual or through a conventional experimental method.

[0027] In the description of the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] Based on the above ideal embodiments of the utility model, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A PVC color film flaw detection mechanism, comprising a unwinding mechanism and a winding mechanism, the unwinding mechanism and the winding mechanism are arranged at both ends of a detection platform (1); characterized in that: The detection platform (1) is provided with a horizontal LED lamp box (2) near one end of the unwinding mechanism; the LED lamp box (2) is provided with an X-axis fixed-point glue injection device (3) away from one side of the unwinding mechanism; the X-axis fixed-point glue injection device (3) is provided with a hot pressing device (4) away from one side of the LED lamp box (2).

2. The PVC color film flaw detection mechanism according to claim 1, characterized in that: The LED lamp box (2) is a high-brightness LED linear spotlight cold light source, and an industrial linear array CCD camera is matched above the LED lamp box (2).

3. The PVC color film flaw detection mechanism according to claim 1, characterized in that: The X-axis fixed-point glue injection device (3) comprises a support frame (301), the support frame (301) is installed on the detection platform (1), and the support frame (301) is provided with a reciprocating screw rod module (302) on the side; an electric glue injection nozzle (303) is installed on the sliding block of the reciprocating screw rod module (302); and the electric glue injection nozzle (303) is connected with a pump body through a rubber pipe (304) at the top.

4. The PVC color film flaw detection mechanism according to claim 3, characterized in that: The pump body is arranged in a glue tank (305).

5. The PVC color film flaw detection mechanism according to claim 1, characterized in that: The hot pressing device (4) comprises a mounting frame (401), the mounting frame (401) is fixed with the detection platform (1), and a hot pressing roller (402) is installed above the detection platform (1).

6. The PVC color film flaw detection mechanism according to claim 5, characterized in that: The hot pressing roller (402) is installed on the telescopic end of a gas cylinder (403) through a hot pressing roller (402) seat, and the gas cylinder (403) is fixed on the mounting frame (401).

7. The PVC color film flaw detection mechanism according to claim 6, characterized in that: Resistance wires are arranged in the hot pressing roller (402).

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