Dust removal structure for pre-coat film production

Abstract

The utility model relates to precoat film production technical field, especially precoat film production is with dust removal structure, including frame and dust removal roller, the film is coiled on dust removal roller, the frame is provided with ion wind stick, electrostatic adsorption device and micro -sticky dust roller in proper order along the film advancing direction, the electrostatic adsorption device includes a rotatable metal roller, the metal roller surface insulating coating has dielectric material layer, the micro -sticky dust roller is by metal core shaft and the micro -sticky silica gel layer of coating its outside constitution, the frame still is provided with vacuum dust suction mouth, the utility model discloses adopt the frame and be provided with ion wind stick, electrostatic adsorption device and micro -sticky dust roller in proper order along the film advancing direction, and ion wind stick first neutralizes the electrostatic of film surface and blows loose dust, and electrostatic adsorption device captures fine particle using high -voltage electric field, and finally by micro -sticky dust roller sticks and removes residual microparticle, realizes to all kinds of dust, especially the efficient, thorough removal of charged dust.

Description

Technical Field

[0001] This utility model relates to the field of pre-coated film production technology, and in particular to a dust removal structure for pre-coated film production. Background Technology

[0002] Pre-coated film refers to the process of applying adhesive to plastic pre-coated film, rewinding it, and then laminating it with paper printed materials. First, the pre-coated film processing plant applies adhesive to the pre-coated film according to the usage specifications and size, rewinds it, and then provides it to the user for selection. Then it is laminated with printed materials. During the production process of pre-coated film, the surface of the substrate film is very easy to absorb dust, fibers and other impurities in the air. If these impurities are not removed before coating, they will directly affect the coating quality and cause product defects.

[0003] According to Chinese Patent Publication No. CN207271667U, a patent document entitled "Dust Removal Structure for Pre-coated Film Production" is disclosed. Existing dust removal structures mostly use a single brush roller or electrostatic eliminator. They are not ideal for removing lightweight, charged micro-dust, especially for particles that are firmly adsorbed by electrostatics. Moreover, the dust removed by existing dust removal structures is easy to be re-entrained and re-contaminate the film or production environment. Utility Model Content

[0004] The purpose of this invention is to solve the problem of incomplete dust removal and easy secondary pollution in the existing technology, and to propose a dust removal structure for pre-coated film production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dust removal structure for pre-coated film production includes a frame and a dust removal roller. A film is wound on the dust removal roller. An ion air bar, an electrostatic adsorption device, and a micro-adhesive roller are sequentially arranged on the frame along the film's travel direction. The electrostatic adsorption device includes a rotatable metal roller with an insulating dielectric material layer on its surface and a high-voltage electrode inside. The micro-adhesive roller consists of a metal core and a micro-adhesive silicone layer covering it. A vacuum suction port is also provided on the frame, with the collection direction of the vacuum suction port aligned with the peel point between the electrostatic adsorption device and the film.

[0006] Preferably, a speed-regulating motor is fixedly installed on the frame, and the metal roller is fixedly connected to the output shaft of the speed-regulating motor.

[0007] Preferably, the dielectric material layer is made of polytetrafluoroethylene or ceramic.

[0008] Preferably, the surface of the micro-adhesive silicone layer is formed into a micro-velvet structure through plasma treatment.

[0009] Preferably, the blowing direction of the ion bar is at an angle of 30-45 degrees to the surface of the thin film.

[0010] Preferably, the length of the ion bar is greater than the width of the film.

[0011] Compared with the prior art, the present invention has the following advantages: 1. This utility model employs an ion bar, an electrostatic adsorption device, and a micro-dust roller arranged sequentially along the film's travel direction on a frame. The ion bar first neutralizes the static electricity on the film surface and blows away loose dust. The electrostatic adsorption device uses a high-voltage electric field to capture fine particles. Finally, the micro-dust roller removes residual particles, achieving efficient and thorough removal of various types of dust, especially charged dust.

[0012] 2. This utility model adopts a vacuum suction port with the collection direction aligned with the peeling point between the electrostatic adsorption device and the film. The metal roller rotates at a uniform speed, and the vacuum suction port can continuously peel the captured dust from the dielectric material layer and immediately suck it into the collection system, effectively preventing secondary dust flying and accumulation, maintaining the cleanliness of the roller surface and continuous adsorption capacity, while maintaining the cleanliness of the production environment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the dust removal structure for pre-coated film production proposed in this utility model; Figure 2 This is a cross-sectional view of the internal structure of the dust removal structure for pre-coated film production proposed in this utility model; Figure 3 This is a partial enlarged view of area A of the dust removal structure for pre-coated film production proposed in this utility model; Figure 4 This is a partial enlarged view of region B of the dust removal structure for pre-coated film production proposed in this utility model.

[0014] In the diagram: 1. Frame; 2. Dust removal roller; 3. Film; 4. Ionizing air bar; 5. Electrostatic adsorption device; 6. Micro-adhesive dust roller; 7. Metal roller; 8. Dielectric material layer; 9. High voltage electrode; 10. Metal mandrel; 11. Micro-adhesive silicone layer; 12. Speed-regulating motor; 13. Vacuum suction port. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figures 1-4The dust removal structure for pre-coated film production includes a frame 1 and a dust removal roller 2. A film 3 is wound on the dust removal roller 2. An ion air bar 4, an electrostatic adsorption device 5 and a micro-dust roller 6 are arranged sequentially on the frame 1 along the direction of film 3 travel. The frame 1 is constructed of aluminum profiles and spans across the film 3 production line.

[0017] The blowing direction of the ion air bar 4 is at a 30-45 degree angle to the surface of the film 3, which can effectively blow away dust and avoid causing the film to shake. The length of the ion air bar 4 is greater than the width of the film 3 to ensure that the ion air bar 4 can fully cover the film 3.

[0018] Start the production line and let the film 3 pass through the bottom of the ion bar 4, the roller surface of the electrostatic adsorption device 5, and the roller surface of the micro-dust roller 6 in sequence. Adjust the blowing angle of the ion bar 4 to 40 degrees and keep it at an appropriate distance from the film surface. The ion bar 4 first neutralizes the static electricity on the film surface, causing its static voltage to drop from several thousand volts to below 100V. At the same time, it blows most of the loose dust and fibers away from the surface.

[0019] The electrostatic adsorption device 5 includes a rotatable metal roller 7, the surface of which is insulated with a dielectric material layer 8, which is made of polytetrafluoroethylene or ceramic.

[0020] The metal roller 7 is equipped with a high-voltage electrode 9, which is made of copper and is connected to a DC high-voltage power supply via a high-voltage cable.

[0021] A speed-regulating motor 12 is fixedly installed on the frame 1, and the metal roller 7 is fixedly connected to the output shaft of the speed-regulating motor 12, which can steplessly regulate the speed within an appropriate range.

[0022] Start the electrostatic adsorption device 5, first turn on the speed-regulating motor 12, then turn on the high-voltage power supply, and gradually adjust the voltage to an appropriate range. The film with residual static electricity and fine dust then comes into contact with the electrostatic adsorption device 5. Under the action of the high-voltage electric field, the charged particles are strongly adsorbed onto the surface of the dielectric material layer 8.

[0023] The frame 1 is also equipped with a vacuum suction port 13. The collection direction of the vacuum suction port 13 is aligned with the peeling point between the electrostatic adsorption device 5 and the film 3. The vacuum suction port 13 is connected to an external dust collection system through a pipe. The electrostatic adsorption device 5 rotates continuously, turning the roller surface area that has captured dust away from the film contact area, where it is efficiently removed at the vacuum suction port 13, thus achieving continuous dust removal.

[0024] The micro-adhesive roller 6 consists of a metal core shaft 10 and a micro-adhesive silicone layer 11 covering it. The surface of the micro-adhesive silicone layer 11 is formed into a micro-fur structure through plasma treatment, which greatly increases the adhesion area and capture ability.

[0025] The micro-adhesive roller 6 rotates naturally as the film 3 moves along, and the contact pressure between the micro-adhesive roller 6 and the film 3 is always kept moderate. After the first two stages of treatment, the film finally comes into contact with the micro-adhesive roller 6. Its micro-adhesive surface adheres to and captures the remaining small-diameter particles, completing the final purification and achieving efficient and thorough removal of various dusts, especially charged micro-dust.

[0026] It should be noted that the specific model and specifications to be adopted need to be determined based on the actual specifications of the device. The specific selection and calculation methods use existing technology in this field, so they will not be elaborated here.

[0027] The functional principle of this utility model can be explained through the following operation methods: The system includes a frame 1 and a dust removal roller 2. A film 3 is wound on the dust removal roller 2. An ion air bar 4, an electrostatic adsorption device 5, and a micro-adhesive roller 6 are arranged sequentially on the frame 1 along the traveling direction of the film 3. The electrostatic adsorption device 5 includes a rotatable metal roller 7. The surface of the metal roller 7 is insulated and covered with a dielectric material layer 8. A high-voltage electrode 9 is arranged inside the metal roller 7. The micro-adhesive roller 6 is composed of a metal core shaft 10 and a micro-adhesive silicone layer 11 covering it. A vacuum suction port 13 is also provided on the frame 1. The collection direction of the vacuum suction port 13 is aligned with the separation point between the electrostatic adsorption device 5 and the film 3. The film 3 first passes through the ion air bar 4 to eliminate static electricity and blow away large dust particles. Then it comes into contact with the electrostatic adsorption device 5, which carries a high voltage. The fine charged dust particles are powerfully captured. Finally, it passes through the micro-adhesive roller 6 to remove any residual particles. The dust captured by the electrostatic adsorption device 5 rotates with the roller to the separation point and is sucked away by the vacuum suction port 13, completing a highly efficient and continuous dust removal process without secondary pollution.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dust removal structure for pre-coated film production, comprising a frame (1) and a dust removal roller (2), characterized in that, A thin film (3) is wound on the dust removal roller (2). An ion wind bar (4), an electrostatic adsorption device (5) and a micro-adhesive roller (6) are arranged sequentially on the frame (1) along the traveling direction of the thin film (3). The electrostatic adsorption device (5) includes a rotatable metal roller (7). The surface of the metal roller (7) is insulated with a dielectric material layer (8). A high voltage electrode (9) is arranged inside the metal roller (7). The micro-adhesive roller (6) is composed of a metal core shaft (10) and a micro-adhesive silicone layer (11) covering it. A vacuum suction port (13) is also provided on the frame (1). The collection direction of the vacuum suction port (13) is aligned with the peeling point between the electrostatic adsorption device (5) and the thin film (3).

2. The dust removal structure for pre-coated film production according to claim 1, characterized in that, A speed-regulating motor (12) is fixedly installed on the frame (1), and the metal roller (7) is fixedly connected to the output shaft of the speed-regulating motor (12).

3. The dust removal structure for pre-coated film production according to claim 1, characterized in that, The dielectric material layer (8) is made of polytetrafluoroethylene or ceramic.

4. The dust removal structure for pre-coated film production according to claim 1, characterized in that, The surface of the micro-adhesive silicone layer (11) is formed into a micro-velvet structure through plasma treatment.

5. The dust removal structure for pre-coated film production according to claim 1, characterized in that, The blowing direction of the ion bar (4) is at an angle of 30-45 degrees to the surface of the film (3).

6. The dust removal structure for pre-coated film production according to claim 1, characterized in that, The length of the ion wind bar (4) is greater than the width of the film (3).

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