Corrugating medium coating device

Abstract

The utility model discloses a corrugating medium coating device which comprises a base and a coating rack, the coating rack is fixedly connected above the base, one end of the coating rack is rotatably connected with a feeding roller, one end of the coating rack far away from the feeding roller is rotatably connected with a discharging roller, and the other end of the coating rack far away from the discharging roller is rotatably connected with a discharging roller. The end, close to the feeding roller, of the inner side of the coating rack is rotationally connected with a tensioning frame, and the end, close to the discharging roller, of the interior of the coating rack is fixedly connected with a humidifying groove. The humidifying tank is arranged at the front end of the discharging roller, water mist sprayed out of the humidifying tank can be used for temporarily humidifying the back face of corrugating base paper passing through the top of the humidifying tank before discharging, the influence of the follow-up drying procedure on the water content of a paper tape is reduced in a margin compensation mode, and the situation that the corrugating base paper becomes brittle due to the too low water content is avoided.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper processing technology, and in particular to a coating device for corrugated base paper. Background Technology

[0002] Corrugated base paper is one of the essential materials in the production of corrugated board, serving as the raw material for the corrugated core of the board. It is processed by a corrugating machine, where corrugated rolls heated to 160-180°C corrugate the core paper to form corrugated paper. Corrugated base paper requires good fiber bonding strength, a smooth surface, good density and stiffness, and a certain degree of elasticity to ensure that the finished cartons have shockproof and pressure-resistant capabilities. During the production process, the surface of the base paper needs to be sizing coated to improve its surface properties and physical properties.

[0003] In existing corrugated base paper coating processes, in order to ensure that the adhesive film dries quickly and facilitates subsequent direct winding and packaging, the corrugated base paper needs to be dried after coating. However, when drying the coated surface of the corrugated base paper, existing drying equipment heats both sides to quickly increase the paper strip temperature in order to improve drying efficiency. This causes the moisture on the back of the corrugated base paper to evaporate faster, resulting in the corrugated base paper losing more moisture during the subsequent cooling process. This is not conducive to subsequent moisture content control and has room for further improvement. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a coating device for corrugated base paper. During coating, a humidifying component can be used to temporarily humidify the area under the corrugated base paper strip. By increasing the amount of moisture, the impact of the subsequent drying process on the moisture content of the paper strip is reduced, thus solving the above-mentioned problem.

[0005] To achieve the above objectives, a coating apparatus for corrugated base paper is provided, comprising a base and a coating frame. The coating frame is fixedly connected to the top of the base. A feed roller is rotatably connected to one end of the coating frame. A discharge roller is rotatably connected to the end of the coating frame away from the feed roller. A tensioning frame is rotatably connected to the inner side of the coating frame near the feed roller. A humidification tank is fixedly connected to the inner side of the coating frame near the discharge roller.

[0006] Inside the coating frame, a coating roller is rotatably connected between a tensioning frame and a humidification tank. A top roller is positioned below the coating roller within the coating frame. A spray gun is fixedly connected below the coating roller on the side of the coating frame closest to the feed roller. Multiple adhesive nozzles are positioned on the spray gun near the coating roller. A scraper is fixedly connected above the spray gun within the coating frame. A glue recovery tank is fixedly connected above the scraper. A scraper blade is fixedly connected above the glue recovery tank on the side of the glue roller. A glue storage tank is fixedly connected to the outer side of the coating frame at a position corresponding to the spray gun. A diaphragm pump is fixedly connected to the outer side of the coating frame below the glue storage tank.

[0007] According to the coating device for corrugated base paper, the humidification tank includes a tank body, a support roller shaft, an ultrasonic atomizer, a drain pipe, and a water inlet pipe. The support roller shaft is rotatably connected to the top of both sides of the tank body. An ultrasonic atomizer is symmetrically and obliquely arranged on both sides of the lower part of the tank body. A drain pipe is arranged at the horizontal position of the ultrasonic atomizer in the middle of one side of the tank body. A water inlet pipe is fixedly connected to the tank body above the water inlet of the drain pipe.

[0008] According to the coating device for corrugated base paper, a drive motor is provided at a position on the outer side of one side of the coating frame corresponding to the discharge roller and the glue roller. The end of the discharge roller away from the drive motor is synchronously connected to the feed roller through chain drive.

[0009] According to the coating apparatus for corrugated base paper, a torsion spring is provided at the connection between the tensioning frame and the coating machine frame to provide tension.

[0010] According to the aforementioned coating apparatus for corrugated base paper, the end of the recycling trough near the glue storage tank is connected to the top of the glue storage tank via a pipe.

[0011] According to the coating apparatus for corrugated base paper, the bottom of the glue storage tank is connected to multiple glue spray nozzles via a diaphragm pump.

[0012] The above solution has at least one of the following beneficial effects:

[0013] 1. This utility model has a humidification tank at the front end of the discharge roller. Before discharge, the water mist sprayed from the humidification tank can be used to temporarily humidify the back of the corrugated base paper passing over it. By using the surplus compensation method, the impact of the subsequent drying process on the moisture content of the paper tape is reduced, and the corrugated base paper is prevented from becoming brittle due to excessively low moisture content, thus enhancing the practicality of the device.

[0014] 2. This utility model is equipped with a coating roller and a spraying base, which work together with a top roller. During coating, the glue is first sprayed onto the coating roller through the glue spraying nozzle on the spraying base. Then, through the cooperation of the coating roller and the top roller, the glue is evenly coated onto the paper tape of the corrugated base paper. The indirect spray coating method makes it easier to control the thickness of the glue film while improving the uniformity of coating, thus enhancing the practicality of the device.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional structural diagram of the left side of a coating device for corrugated base paper according to the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the coating device for corrugated base paper according to the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the spraying base of a coating device for corrugated base paper according to the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the humidification tank of a coating device for corrugated base paper according to this utility model.

[0021] Legend:

[0022] 1. Base; 2. Coating frame; 3. Feed roller; 4. Discharge roller; 5. Tensioner frame;

[0023] 6. Top roller; 7. Glue roller; 8. Spraying stand; 9. Glue spray nozzle; 10. Glue scraper;

[0024] 11. Scraper blade; 12. Glue storage tank; 13. Diaphragm pump; 14. Glue recovery tank; 15. Humidification tank; 151. Tank body; 152. Support roller shaft; 153. Ultrasonic atomizer; 154. Drain pipe; 155. Water inlet pipe. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4This utility model provides a coating device for corrugated base paper, including a base 1 and a coating frame 2. The coating frame 2 is fixedly connected to the top of the base 1. A feed roller 3 is rotatably connected to one end of the coating frame 2, and a discharge roller 4 is rotatably connected to the end of the coating frame 2 away from the feed roller 3. A tensioning frame 5 is rotatably connected to the inner side of the coating frame 2 near the feed roller 3. A torsion spring providing tension force is provided at the connection between the tensioning frame 5 and the coating frame 2. A humidification tank 15 is fixedly connected to the inner side of the coating frame 2 near the discharge roller 4. The humidification tank 15 includes a tank body 151, a support roller shaft 152, an ultrasonic atomizer 153, a drain pipe 154, and a water inlet pipe 155. Both sides of the top are rotatably connected to support rollers 152. An ultrasonic atomizer 153 is symmetrically and obliquely arranged on both sides of the lower part of the tank 151, so that the tank 151 is filled with water mist and the water mist can be sprayed directly onto the paper tape of the corrugated base paper. A drain pipe 154 is set at the horizontal position of the ultrasonic atomizer 153 in the middle of one side of the tank 151. A water inlet pipe 155 is fixedly connected to the tank 151 above the water inlet of the drain pipe 154. With the continuous water inlet pipe 155 and the continuous water outlet pipe 154, the water level inside the tank 151 can be kept at the height of the ultrasonic atomizer 153, which is convenient for the ultrasonic atomizer 153 to perform atomization spray.

[0027] In actual operation, this device uses a humidification tank 15 between the discharge roller 4 and the coating roller 7 to temporarily humidify the back of the corrugated base paper passing over it by spraying water mist inside the humidification tank 15. By using the surplus compensation method, the impact of the subsequent drying process on the moisture content of the paper tape is reduced, and the corrugated base paper is prevented from becoming brittle due to excessively low moisture content.

[0028] Inside the coating frame 2, a coating roller 7 is rotatably connected between the tension frame 5 and the humidification tank 15. Drive motors are installed on one side of the coating frame 2 at positions corresponding to the discharge roller 4 and the coating roller 7. The end of the discharge roller 4 away from the drive motor is synchronously connected to the feed roller 3 via a chain drive. A top roller 6 is installed below the coating roller 7 in the coating frame 2. Inside the coating frame 2, a spraying base 8 is fixedly connected below the coating roller 7 on the side near the feed roller 3. Multiple spray nozzles 9 are installed on the side of the spraying base 8 near the coating roller 7. A glue storage tank 12 is fixedly connected to one side of the frame 2 at a position corresponding to the spraying seat 8. A diaphragm pump 13 is fixedly connected to the outside of the coating frame 2 below the glue storage tank 12. The bottom of the glue storage tank 12 is connected to multiple glue spraying nozzles 9 through the diaphragm pump 13. During coating, the glue is first sprayed onto the coating roller 7 through the glue spraying nozzles 9. Then, through the cooperation of the coating roller 7 and the top roller 6, the glue is evenly coated onto the paper tape of the corrugated base paper. The indirect spray coating method makes it easier to control the thickness of the glue film while improving the uniformity of coating.

[0029] Inside the coating frame 2, a scraper 10 is fixedly connected above the spraying base 8. A glue recovery tank 14 is fixedly connected above the scraper 10. A scraper blade 11 is fixedly connected above the side of the glue recovery tank 14 near the coating roller 7. The end of the glue recovery tank 14 near the glue storage tank 12 is connected to the top of the glue storage tank 12 through a pipe. After the coating roller 7 has finished coating, the residual glue can be scraped off by the scraper blade 11 and then flow into the glue storage tank 12 through the glue recovery tank 14 for recycling. This avoids the residual glue on the surface of the coating roller 7 from affecting the coating thickness, while saving glue usage and reducing production costs.

[0030] Working principle: In operation, the glue is first sprayed onto the coating roller 7 through the glue spray nozzle 9. Then, through the cooperation of the coating roller 7 and the top roller 6, the glue is evenly coated onto the corrugated base paper tape. The indirect spray coating method facilitates control of the glue film thickness and improves the uniformity of coating. By setting a humidification tank 15 between the discharge roller 4 and the coating roller 7, the water mist generated by the ultrasonic atomizer 153 inside the humidification tank 15 can temporarily humidify the back of the corrugated base paper passing over the two top support rollers 152 after the glue is coated. By using the residual compensation method, the impact of the subsequent drying process on the moisture content of the paper tape is reduced, and the situation where the corrugated base paper becomes brittle due to excessively low moisture content is avoided.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A coating apparatus for corrugated base paper, comprising a base (1) and a coating frame (2), characterized in that: A coating frame (2) is fixedly connected above the base (1). A feed roller (3) is rotatably connected to one end of the coating frame (2). A discharge roller (4) is rotatably connected to the end of the coating frame (2) away from the feed roller (3). A tensioning frame (5) is rotatably connected to the inner side of the coating frame (2) near the feed roller (3). A humidification tank (15) is fixedly connected to the inner side of the coating frame (2) near the discharge roller (4). Inside the coating frame (2), a coating roller (7) is rotatably connected between the tension frame (5) and the humidification tank (15). Below the coating roller (7), a top roller (6) is provided on the coating frame (2). Inside the coating frame (2), a spraying base (8) is fixedly connected below the coating roller (7) on the side near the feed roller (3). Multiple spray nozzles (9) are provided on the side of the spraying base (8) near the coating roller (7). Inside the coating frame (2), a spraying... A scraper (10) is fixedly connected above the base (8), and a glue recovery tank (14) is fixedly connected above the scraper (10). A scraper plate (11) is fixedly connected above the side of the glue recovery tank (14) near the glue coating roller (7). A glue storage tank (12) is fixedly connected to the outer side of the coating frame (2) at a position corresponding to the spraying base (8). A diaphragm pump (13) is fixedly connected to the outer side of the coating frame (2) below the glue storage tank (12).

2. The coating apparatus for corrugated base paper according to claim 1, characterized in that, The humidification tank (15) includes a tank body (151), a support roller shaft (152), an ultrasonic atomizer (153), a drain pipe (154), and a water inlet pipe (155). The top of both sides of the tank body (151) are rotatably connected to the support roller shaft (152). An ultrasonic atomizer (153) is symmetrically and obliquely arranged on both sides of the lower part of the tank body (151). A drain pipe (154) is arranged at the horizontal position of the ultrasonic atomizer (153) on one side of the middle of the tank body (151). The water inlet pipe (155) is fixedly connected to the tank body (151) above the water inlet of the drain pipe (154).

3. The coating apparatus for corrugated base paper according to claim 1, characterized in that, A drive motor is provided on one side of the coating frame (2) at a position corresponding to the discharge roller (4) and the coating roller (7). The end of the discharge roller (4) away from the drive motor is synchronously connected to the feed roller (3) through chain drive.

4. The coating apparatus for corrugated base paper according to claim 1, characterized in that, A torsion spring is provided at the connection between the tensioning frame (5) and the coating frame (2) to provide tension.

5. The coating apparatus for corrugated base paper according to claim 1, characterized in that, The end of the recycling tank (14) near the storage tank (12) is connected to the top of the storage tank (12) via a pipe.

6. The coating apparatus for corrugated base paper according to claim 1, characterized in that, The bottom of the glue storage tank (12) is connected to multiple glue spray nozzles (9) via a diaphragm pump (13).

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