Film coating device for producing high-efficiency film coated paper

Abstract

The utility model discloses an efficient laminating device for producing laminated paper, which comprises a base and a device main body arranged outside the upper side of the base, a console is arranged outside the right front side of the device main body, and a high-temperature feeding platform is arranged above the middle of the right side of the device main body. An unwinding roller is arranged in the middle of the upper left side of the device body, a main roller is arranged on the right side of the unwinding roller, a tensioning roller is arranged on the lower left side of the main roller, a winding roller is arranged on the lower left side of the tensioning roller, and the tail end of the winding roller is in transmission connection with an output motor. Production and cleaning are achieved at the same time, the defect that shutdown is needed in traditional manual wiping is overcome, and the production efficiency is greatly improved. The double-cleaning structure of the steel wire fiber cleaning ferrule and the scraper can remove most of plastic particles adhered to the surface of the compression roller, ensure that the compression roller is always kept in a smooth state, and avoid uneven lamination thickness or original film scratch caused by accumulation of foreign matters.

Description

Technical Field

[0001] This utility model belongs to the technical field of coating equipment, specifically relating to a high-efficiency coating equipment for producing coated paper. Background Technology

[0002] High-efficiency coated paper production equipment refers to the specialized equipment called a coating machine. Coating machines play a crucial role in industrial production, precisely and effectively coating a thin film material onto the surface of common substrates such as paper. This coating not only endows paper with new properties, such as moisture resistance, water resistance, and enhanced toughness, but also greatly expands the application range of paper in different industries, thereby meeting diverse market demands.

[0003] In traditional coating processes, when the pressure roller and main roller press the molten plastic onto the surface of the original film, some of the molten plastic transfers to the pressure roller surface due to adhesion. As production continues, the plastic residue on the pressure roller surface accumulates, causing its diameter and surface roughness to gradually increase, resulting in an uneven state of "continuously increasing thickness." This change causes uneven pressure distribution on the original film as it passes through the gap between the main roller and the pressure roller, creating an uneven transmission circuit and affecting the uniformity of the coating process. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency coating device for producing coated paper, in order to solve the problem in the background art where the continuous accumulation of plastic residue on the surface of the pressure roller leads to a gradual increase in its diameter and surface roughness, resulting in an uneven state of "continuously increasing thickness". This change causes uneven pressure distribution on the original film when it passes through the gap between the main roller and the pressure roller, creating an uneven transmission circuit and affecting the uniformity of coating.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency coated paper production coating device, comprising a base and a device body disposed on the upper outside of the base;

[0006] A control console is located on the front right side of the main body of the device. A high-temperature feeding platform is located on the upper right side of the main body of the device. An unwinding roller is located on the upper left side of the main body of the device. A main roller is located to the right of the unwinding roller. A tensioning roller is located on the lower left side of the main roller. A winding roller is located on the lower left side of the tensioning roller. An output motor is connected to the end of the winding roller. A spraying mechanism is located on the upper right side of the main roller.

[0007] The outer sides of the unwinding roller, main roller, tension roller, and take-up roller are all connected to the original film to be sprayed. The original film forms a continuous transmission loop along the path of the unwinding roller, main roller, tension roller, and take-up roller. The main body of the device is powered by connecting to an external power source.

[0008] A pressure roller is provided on the right side of the main roller, a cleaning roller is provided on the right side of the pressure roller, a cleaning sleeve is provided on the outside of the cleaning roller, and a transmission mechanism is provided on the front and rear ends of the pressure roller and the cleaning roller.

[0009] Fixed arms are respectively provided at the front and rear ends of the pressure roller and above the connection point inside the main body of the device. A fixed spring platform is provided in the middle of the upper side of the fixed arm, and a scraper is provided on the lower side of the fixed spring platform.

[0010] Preferably, the high-temperature feeding platform is provided with a plastic granule feeding port inside, and the high-temperature feeding platform is specifically a hot-melt structure for melting plastic granules.

[0011] Preferably, the outlet of the high-temperature feeding platform is connected to the spraying mechanism;

[0012] The spraying mechanism includes a conveying pump disposed inside the spraying mechanism, multiple channels in fluid communication with the output port of the conveying pump, and multiple nozzles disposed at the outlet ends of the multiple channels, and the multiple nozzles are located on the upper side of the main roller.

[0013] The hot-melted plastic granules are transported to multiple channels by a delivery pump and then sprayed out from the nozzle.

[0014] Preferably, the transmission mechanism includes a transmission gear and a transmission belt, and the pressure roller and the cleaning roller are connected by the transmission gear and the transmission belt, so that the rotation of the pressure roller can drive the cleaning roller to rotate synchronously.

[0015] Preferably, the cleaning ring is made of steel fiber, and the side of the cleaning ring near the pressure roller is configured to form a tight contact with the surface of the pressure roller under pressure.

[0016] Preferably, one end of the fixed arm is fixedly connected to the inner wall of the device body, and the fixed spring platform is detachably connected to the other end of the fixed arm through a bolt connection structure.

[0017] Preferably, the scraper has a raised edge structure on the side near the cleaning roller, and the inner side of the raised edge structure is configured to form line contact with the surface of the pressure roller under pressure. The upper side of the scraper is connected to the fixed spring table through an elastic connection structure, and the elastic connection structure is configured to apply an elastic force toward the upper side of the pressure roller to the scraper.

[0018] Compared with the prior art, this utility model provides a high-efficiency coating device for producing coated paper, which has the following beneficial effects:

[0019] 1. This device achieves simultaneous production and cleaning through the transmission linkage between the pressure roller and the cleaning roller, avoiding the drawbacks of traditional manual wiping that requires machine shutdown, and significantly improving production efficiency. The dual cleaning structure of the steel fiber cleaning ring and the scraper can remove most of the adhering plastic particles from the surface of the pressure roller, ensuring that the pressure roller always remains smooth and avoiding uneven coating thickness or scratches on the original film caused by the accumulation of foreign matter.

[0020] 2. The elastic connection structure of the fixed spring table can automatically compensate for the wear of the pressure roller or installation error, so that the contact pressure between the scraper and the surface of the pressure roller is always stable, and the scraper structure can further clean the residual adhering substances.

[0021] 3. By cleaning the roller rings and scraping the surface of the pressure rollers, the external roughness can be controlled to a low level, reducing the thickness deviation of the original film's plastic coating. This is especially suitable for scenarios with high waterproof performance requirements, and can prevent product defects caused by leakage in thin areas of the coating. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the coating device in this utility model.

[0023] Figure 2 This is a schematic diagram of the interior of the coating device in this utility model.

[0024] Figure 3 In this utility model Figure 2 A magnified structural diagram of the inner circular region.

[0025] Figure 4 In this utility model Figure 2 A structural diagram from the right-hand perspective.

[0026] Figure 5 In this utility model Figure 2 A structural diagram from a frontal view.

[0027] In the diagram: 1. Main body of the device; 2. Control console; 3. Output motor; 4. Raw film; 5. High-temperature feeding platform; 6. Base; 7. Unwinding roller; 8. Spraying mechanism; 9. Fixed spring table; 10. Rewinding roller; 11. Tensioning roller; 12. Main roller; 13. Pressure roller; 14. Cleaning roller; 15. Cleaning ring; 16. Transmission mechanism; 17. Scraper; 18. Fixed arm. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides, for example Figures 1-5 The high-efficiency coated paper production coating device shown includes a base 6 and a device body 1 disposed on the upper outside of the base 6;

[0030] A control console 2 is located on the outer right front side of the main body 1. A high-temperature feeding platform 5 is located on the upper right side of the main body 1. An unwinding roller 7 is located on the middle left side of the main body 1. A main roller 12 is located to the right of the unwinding roller 7. A tensioning roller 11 is located on the lower left side of the main roller 12. A take-up roller 10 is located on the lower left side of the tensioning roller 11. An output motor 3 is connected to the end of the take-up roller 10. A spraying mechanism 8 is located on the outer right side of the main roller 12.

[0031] The unwinding roller 7, main roller 12, tension roller 11 and take-up roller 10 are all connected to the outer side of the original film 4 to be sprayed. The original film 4 forms a continuous transmission circuit along the path of the unwinding roller 7, main roller 12, tension roller 11 and take-up roller 10. The main body of the device 1 is powered by connecting to an external power source. The high-temperature feeding platform 5 is provided with a plastic granule adding port. The high-temperature feeding platform 5 is specifically a hot melt structure for hot melting plastic granules. The outlet of the high-temperature feeding platform 5 is connected to the spraying mechanism 8.

[0032] The spraying mechanism 8 includes a conveying pump disposed inside the spraying mechanism 8, multiple channels in fluid communication with the output port of the conveying pump, and multiple nozzles disposed at the outlet ends of the multiple channels, and the multiple nozzles are located on the upper side of the main roller 12.

[0033] The hot-melted plastic granules are transported to multiple channels by a delivery pump and then sprayed out from the nozzle.

[0034] In addition, a water cooling mechanism is provided on the rear side of the pressure roller 13, and a water cooling channel is provided inside the pressure roller 13. The water cooling mechanism and the internal channel form a circulating water cooling pipeline, and the pressure roller 13 continuously absorbs the external temperature on the upper side of the main roller 12.

[0035] The spraying mechanism 8 sprays the hot-melted plastic liquid onto the outside of the original film 4 conveyed by the main roller 12.

[0036] In this embodiment, when using the film, such as paper or non-woven fabric, the user can install the film to be coated on the unwinding roller 7, pass it around the main roller 12 and the tensioning roller 11 in sequence, and finally fix it on the take-up roller 10 to form a continuous transmission circuit. The output motor 3 drives the take-up roller 10 to rotate, which drives the film 4 to move at a constant speed along the path of unwinding roller → main roller → tensioning roller → take-up roller.

[0037] Users can feed polyethylene (PE), polypropylene (PP), and other plastic particles into the plastic particle feeding port of the high-temperature feeding platform 5. The particles are heated to a molten state of 200-300°C by the internal hot-melt structure such as heating elements. The molten plastic fluid is pressurized by the delivery pump and transported to the nozzle through multiple channels of the spraying mechanism 8. It is then evenly sprayed from the top of the main roller 12 onto the surface of the moving original film 4.

[0038] When the original film sprayed with molten plastic passes through the gap between the main roller 12 and the pressure roller 13, the pressure roller 13 applies pressure to the original film, so that the plastic layer is tightly bonded to the original film. During this process, the water cooling channel inside the pressure roller 13 and the external water cooling mechanism can form a circulation pipeline. The flowing cooling water absorbs the heat on the surface of the pressure roller, quickly cools and solidifies the plastic layer, and prevents the original film from deforming due to high temperature.

[0039] After the paper has been coated and cooled, its tension is adjusted by the tension roller 11, and then it is wound into a finished roll by the take-up roller 10. The user can set the take-up speed and roll diameter through the control panel 2.

[0040] Optionally, the hot-melt mechanism of the high-temperature feeding platform 5 is a screw extruder device. After the high-temperature feeding platform 5 melts the plastic, the output pump precisely controls the flow rate and extrudes it into a thin film fluid through the nozzle slit. By matching the original film moving speed with the melt extrusion speed, uniform coating thickness is achieved.

[0041] The pressure roller 13 is linked to the main roller 12 through the transmission gear and transmission belt transmission mechanism 16 to ensure that the rotation speed of the pressure roller 13 is synchronized with the original film movement speed, so as to avoid stretching or wrinkling of the plastic layer due to speed difference.

[0042] The circulating water cooling pipes inside the pressure roller 13 quickly remove the heat released during plastic curing through heat conduction, allowing the plastic layer to cool from a molten state of about 250°C to a solid state of about 50°C or below in a very short time, ensuring a smooth coating surface.

[0043] The tension roller 11 maintains constant tension by adjusting the tightness of the original film in the transmission circuit, thus preventing the original film from loosening or breaking during the coating process.

[0044] The device adopts a coating process route of "melt extrusion → spray coating → pressing and cooling → winding". The mechanical structure and control logic of each functional module for unwinding, extrusion, coating, cooling and winding are all designed based on existing technologies. For example, the high-temperature feeding platform corresponds to the melting section of the existing extruder; the spraying mechanism corresponds to the existing coating die assembly; and the pressure roller and cooling system correspond to the existing composite calendering device.

[0045] Through the above methods, the device achieves continuous coating processing of the original film, meeting the needs of food packaging, pharmaceutical packaging and other fields for waterproof and heat-sealing performance.

[0046] like Figures 1-5 As shown, a pressure roller 13 is provided on the right side of the main roller 12, a cleaning roller 14 is provided on the right side of the pressure roller 13, a cleaning sleeve 15 is provided on the outside of the cleaning roller 14, and a transmission mechanism 16 is provided on the front and rear ends of the pressure roller 13 and the cleaning roller 14.

[0047] Fixed arms 18 are respectively provided above the front and rear ends of the pressure roller 13 and the connection point inside the main body 1. A fixed spring platform 9 is provided in the middle of the upper side of the fixed arm 18, and a scraper 17 is provided on the lower side of the fixed spring platform 9. The transmission mechanism 16 includes a transmission gear and a transmission belt. The pressure roller 13 and the cleaning roller 14 are connected by the transmission gear and the transmission belt, so that the rotation of the pressure roller 13 can drive the cleaning roller 14 to rotate synchronously. The cleaning ring 15 is made of steel fiber. The side of the cleaning ring 15 near the pressure roller 13 is configured to press against the pressure roller 13 under pressure. The surfaces of the pressure roller 13 are in close contact. One end of the fixed arm 18 is fixedly connected to the inner wall of the main body 1 of the device. The fixed spring table 9 is detachably connected to the other end of the fixed arm 18 through a bolt connection structure. The scraper 17 is provided with a raised edge structure on the side near the cleaning roller 14. The inner side of the raised edge structure is configured to form a line contact with the surface of the pressure roller 13 under pressure. The upper side of the scraper 17 is connected to the fixed spring table 9 through an elastic connection structure. The elastic connection structure is configured to apply an elastic force toward the upper side of the pressure roller 13 to the scraper 17.

[0048] Preferably, in this device, when the pressure roller 13 rotates with the original film 4, the gear and belt of the transmission mechanism 16 drive the cleaning roller 14 to rotate synchronously in the opposite direction, so that the steel fiber cleaning ring 15 on the surface of the cleaning roller 14 and the surface of the pressure roller 13 maintain a contact state with the same linear velocity but opposite direction.

[0049] The steel wire fibers of the cleaning ring 15 are embedded in the plastic adhesion layer on the surface of the pressure roller 13 under compression. The solidified plastic particles are peeled off by mechanical scraping to prevent them from accumulating and causing unevenness on the surface of the pressure roller.

[0050] In addition, the compression spring inside the fixed spring table 9 applies a constant vertical downward elastic force to the scraper 17, so that the raised edge structure of the scraper 17 always maintains a line contact gap with the surface of the pressure roller 13.

[0051] When the pressure roller 13 experiences slight wear or unevenness due to long-term use, the elastic connection structure automatically adjusts the position of the scraper 17 through deformation to ensure that the inner side of the raised edge structure continues to adhere to the surface of the pressure roller 13, maintaining a stable cleaning effect.

[0052] During use, the cleaning roller 14 removes most of the plastic clumps on the surface of the pressure roller 13 by scraping with the rotating cleaning ring 15, and the raised edge structure of the scraper 17 further removes the residual small plastic particles, ensuring that the original film 4 is subjected to uniform force when it comes into contact with the pressure roller.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency coated paper production coating device, comprising a base (6) and a device body (1) disposed on the upper outside of the base (6); A control console (2) is provided on the front right side of the main body (1). A high-temperature feeding platform (5) is provided on the upper right side of the main body (1). An unwinding roller (7) is provided on the upper left side of the main body (1). A main roller (12) is provided on the right side of the unwinding roller (7). A tensioning roller (11) is provided on the lower left side of the main roller (12). A winding roller (10) is provided on the lower left side of the tensioning roller (11). An output motor (3) is connected to the end of the winding roller (10). A spraying mechanism (8) is provided on the upper right side of the main roller (12). The outer sides of the unwinding roller (7), main roller (12), tension roller (11) and take-up roller (10) are all connected to the original film (4) to be sprayed. The original film (4) forms a continuous transmission loop along the path of the unwinding roller (7), main roller (12), tension roller (11) and take-up roller (10). The main body of the device (1) is powered by connecting to an external power source. Its features are: A pressure roller (13) is provided on the right side of the main roller (12), a cleaning roller (14) is provided on the right side of the pressure roller (13), a cleaning sleeve (15) is provided on the outside of the cleaning roller (14), and a transmission mechanism (16) is provided on the front and rear ends of the pressure roller (13) and the cleaning roller (14). Fixed arms (18) are respectively provided at the front and rear ends of the pressure roller (13) and above the connection point inside the main body (1) of the device. A fixed spring platform (9) is provided in the middle of the upper side of the fixed arm (18), and a scraper (17) is provided on the lower side of the fixed spring platform (9).

2. The coating apparatus for high-efficiency coated paper production according to claim 1, characterized in that: The high-temperature feeding platform (5) is provided with a plastic particle adding port inside, and the high-temperature feeding platform (5) is specifically a hot melt structure for hot melting plastic particles.

3. The coating apparatus for high-efficiency coated paper production according to claim 2, characterized in that: The outlet of the high-temperature feeding platform (5) is connected to the spraying mechanism (8); The spraying mechanism (8) includes a conveying pump disposed inside the spraying mechanism (8), multiple channels in fluid communication with the output port of the conveying pump, and multiple nozzles disposed at the outlet ends of the multiple channels, and the multiple nozzles are located on the upper side of the main roller (12). The melted plastic granules are transported to multiple channels by a delivery pump and then sprayed out from the nozzle.

4. The coating apparatus for high-efficiency coated paper production according to claim 3, characterized in that: The transmission mechanism (16) includes a transmission gear and a transmission belt. The pressure roller (13) and the cleaning roller (14) are connected by the transmission gear and the transmission belt, so that the rotation of the pressure roller (13) can drive the cleaning roller (14) to rotate synchronously.

5. The coating apparatus for high-efficiency coated paper production according to claim 4, characterized in that: The cleaning ring (15) is made of steel wire fiber, and the side of the cleaning ring (15) near the pressure roller (13) is configured to form a tight contact with the surface of the pressure roller (13) under pressure.

6. The coating apparatus for high-efficiency coated paper production according to claim 5, characterized in that: One end of the fixed arm (18) is fixedly connected to the inner wall of the device body (1), and the fixed spring table (9) is detachably connected to the other end of the fixed arm (18) through a bolt connection structure.

7. The coating apparatus for high-efficiency coated paper production according to claim 6, characterized in that: The scraper (17) has a raised edge structure on the side near the cleaning roller (14), and the inner side of the raised edge structure is configured to form a line contact with the surface of the pressure roller (13) under pressure. The upper side of the scraper (17) is connected to the fixed spring table (9) through an elastic connection structure, and the elastic connection structure is configured to apply an elastic force toward the upper side of the pressure roller (13) to the scraper (17).

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