Protective film coating device

Abstract

This utility model discloses a protective film coating device, comprising: a frame body, a transfer box located on the frame body, an adhesive roller, and a coating roller. At least two sets of conveyor rollers are spaced apart inside the transfer box. The adhesive roller and coating roller are located on the side of the two sets of conveyor rollers away from the inlet of the transfer box and above the frame body. An outer cylinder is located on the side opposite to the coating roller and the adhesive roller. An inner cylinder is installed inside the outer cylinder, and several heating wires are arranged between the inner and outer cylinders. A connected housing is installed at the bottom of the transfer box. One end of an air inlet pipe near the inlet of the transfer box is located between the two sets of conveyor rollers, and the other end is connected to the housing. One end of an air outlet pipe away from the inlet of the transfer box is located between the two sets of conveyor rollers, and the other end is connected to the housing. A fan and an electric heating grid are installed inside the housing. This utility model can increase the surface temperature of the film material, reduce the temperature difference with the adhesive, enhance adhesion, and quickly dry the adhesive, thus achieving surface drying of the film material.

Description

Technical Field

[0001] This utility model relates to the field of protective film coating technology, and in particular to a protective film coating device. Background Technology

[0002] With the rapid development of industrial technology and the continuous expansion of social demand for coating products, modern coating processes are constantly moving towards higher speed and precision. Protective film coating equipment is mainly used to uniformly coat adhesive on the surface of substrates. This equipment is a key link connecting substrates and adhesive applications. Its role is not limited to physical coating, but also achieves functionalization, efficiency improvement and quality control through process optimization, and widely serves the material processing needs of industrial fields such as packaging, automobiles, and construction.

[0003] However, traditional adhesive application devices have some shortcomings. In low-temperature environments, when the adhesive comes into contact with the cold film material, bubbles are easily generated due to temperature differences, resulting in insufficient adhesion and easy delamination during subsequent use. Utility Model Content

[0004] The purpose of this invention is to provide a protective film coating device that can increase the surface temperature of the film material, reduce the temperature difference with the adhesive, enhance adhesion, and quickly dry the adhesive, thus preventing the adhesive from flowing and causing uneven coating of the film material or overflowing adhesive at the edges of the film material.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a protective film coating device, comprising: a frame body, a transmission box located on the frame body, an adhesive roller and a coating roller, wherein at least two sets of conveying wheels are spaced apart in the transmission box, and the adhesive roller and the coating roller are located on the side of the two sets of conveying wheels away from the inlet of the transmission box and above the frame body. An outer cylinder is located on the side opposite to the glue-applying roller and the glue-coating roller. An inner cylinder is disposed inside the outer cylinder, and several heating wires are disposed between the inner cylinder and the outer cylinder. The bottom of the transmission box is equipped with a connected box body. One end of an air inlet pipe near the inlet of the transmission box is located between two sets of conveyor wheels, and the other end is connected to the box body. One end of an air outlet pipe, located away from the inlet of the transmission box, is situated between two sets of conveyor wheels, while the other end is connected to the box body, which contains a fan and an electric heating network.

[0006] The following are further improvements to the above technical solution: 1. In the above scheme, the plurality of heating wires are distributed at equal intervals along the circumference.

[0007] 2. In the above scheme, the electric heating network is located inside the box on the side near the air outlet pipe.

[0008] 3. In the above scheme, the height of the outer cylinder is lower than the height of the top glue roller, but higher than the height of the coating roller.

[0009] 4. In the above scheme, a support rod is installed between the two sets of conveyor wheels near the inlet of the transmission box.

[0010] 5. In the above scheme, one set of conveyor wheels is close to the inlet of the transmission box, and the other set of conveyor wheels is located in the middle of the transmission box.

[0011] 6. In the above scheme, each group of conveyor wheels consists of two conveyor wheels arranged vertically at intervals.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a protective film coating device, comprising a frame body, a transfer box located on the frame body, an application roller, and a coating roller. At least two sets of conveyor rollers are spaced apart within the transfer box. An outer cylinder is located on the side opposite to the coating roller and the application roller. An inner cylinder is located inside the outer cylinder. Several circumferentially distributed heating wires are arranged between the inner and outer cylinders. A connected housing is installed at the bottom of the transfer box. One end of an air inlet pipe near the inlet of the transfer box is located between the two sets of conveyor rollers, and the other end is connected to the housing. A fan and an electric heating grid are installed inside the housing. Through the cooperation of the fan and the electric heating grid, and the synergistic preheating and drying of the film material by the heating wires in the outer cylinder and the inner cylinder, the device increases the surface temperature of the film material, reduces the temperature difference with the adhesive, enhances adhesion, and quickly dries the adhesive, preventing uneven coating or adhesive overflow from the film edges caused by adhesive flow. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the overall structure of the protective film coating device of this utility model; Appendix Figure 2 This is a cross-sectional view of the protective film coating device of this utility model; Appendix Figure 3 This is a cross-sectional schematic diagram of the box in this practical protective film coating device; Appendix Figure 4 This is a three-dimensional cross-sectional view of the protective film coating device of this utility model; Appendix Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0014] In the above attached diagrams: 1. Frame body; 2. Transfer box; 3. Glue roller; 4. Glue coating roller; 5. Conveyor wheel; 6. Electric heating grid; 71. Air inlet pipe; 72. Air outlet pipe; 8. Outer cylinder; 9. Inner cylinder; 10. Support rod; 11. Electric heating wire; 12. Box body; 13. Fan; 14. Electric heating grid. Detailed Implementation

[0015] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0016] Example 1: A protective film coating device includes: a frame body 1, a transfer box 2 located on the frame body 1, an adhesive roller 3 and a coating roller 4. At least two sets of conveyor rollers 5 are arranged at intervals in the transfer box 2. The adhesive roller 3 and the coating roller 4 are located on the side of the two sets of conveyor rollers 5 away from the inlet of the transfer box 2 and above the frame body 1. An outer cylinder 8 is located on the side opposite to the glue coating roller 4 and the glue application roller 3. An inner cylinder 9 is provided inside the outer cylinder 8, and a plurality of heating wires 11 are provided between the inner cylinder 9 and the outer cylinder 8. The bottom of the transmission box 2 is equipped with a connected box body 12. One end of an air inlet pipe 71 near the inlet of the transmission box 2 is located between two sets of conveyor wheels 5, and the other end is connected to the box body 12. One end of an air outlet pipe 72, which is far from the inlet of the transmission box 2, is located between the two sets of conveyor wheels 5, and the other end is connected to the box body 12. A fan 13 and an electric heating network 14 are installed inside the box body 12.

[0017] A support wheel 10 is installed between the two sets of conveyor wheels 5 near the inlet of the transmission box 2.

[0018] Of the two sets of conveyor wheels 5, one set is located near the inlet of the transmission box 2, while the other set is located in the middle of the transmission box 2.

[0019] Each set of the above-mentioned conveyor wheels 5 consists of two conveyor wheels 5 arranged vertically at intervals.

[0020] Example 2: A protective film coating device, comprising: a frame body 1, a transfer box 2 located on the frame body 1, an adhesive roller 3 and a coating roller 4, wherein at least two sets of conveying wheels 5 are spaced apart in the transfer box 2, and the adhesive roller 3 and the coating roller 4 are located on the side of the two sets of conveying wheels 5 away from the inlet of the transfer box 2 and above the frame body 1. An outer cylinder 8 is located on the side opposite to the glue coating roller 4 and the glue application roller 3. An inner cylinder 9 is provided inside the outer cylinder 8, and a plurality of heating wires 11 are provided between the inner cylinder 9 and the outer cylinder 8. The bottom of the transmission box 2 is equipped with a connected box body 12. One end of an air inlet pipe 71 near the inlet of the transmission box 2 is located between two sets of conveyor wheels 5, and the other end is connected to the box body 12. One end of an air outlet pipe 72, which is far from the inlet of the transmission box 2, is located between the two sets of conveyor wheels 5, and the other end is connected to the box body 12. A fan 13 and an electric heating network 14 are installed inside the box body 12.

[0021] The aforementioned heating wires 11 are evenly spaced along the circumference.

[0022] The aforementioned electric heating network 14 is located inside the housing 12 on the side near the air outlet pipe 72.

[0023] The height of the outer cylinder 8 is lower than the height of the top glue roller 3, but higher than the height of the coating roller 4.

[0024] The working principle is as follows: The membrane material enters the transfer box via a conveyor wheel near the inlet. The fan starts operating to heat the substrate: the airflow is heated by the electric heating grid and becomes warm air, which is blown into the transfer box through the air blower to heat the membrane material. At this time, a negative pressure is generated inside the box, causing the airflow to enter the fan box from the air inlet and continue to circulate and heat with the newly generated airflow. After the membrane material surface is heated and softened, it enters the space between the gluing roller and the coating roller for coating. The coated membrane material passes through the outer cylinder and rotates through the inner cylinder with electric heating wires inside, so that the surface of the membrane material is heated evenly. After drying, the membrane material is discharged from the outlet.

[0025] When the above-mentioned protective film coating device is used, the preheating and drying of the film material by the combination of the fan and the electric heating grid and the electric heating wire in the outer cylinder and the inner cylinder (12) can be coordinated to increase the surface temperature of the film material, reduce the temperature difference with the glue, enhance the adhesion, and quickly dry the glue, so as to avoid the glue flowing and causing uneven coating of the film material or glue overflowing from the edge of the film material.

[0026] Furthermore, a support rod is installed between the two sets of conveyor wheels to support the membrane material during transmission, effectively preventing it from sagging and being damaged due to softening during the drying process.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A protective film gluing apparatus comprising: The frame body (1), the transfer box (2) located on the frame body (1), the glue roller (3) and the glue coating roller (4), the transfer box (2) is provided with at least two sets of conveyor rollers (5) spaced apart, the glue roller (3) and the glue coating roller (4) are located on the side of the two sets of conveyor rollers (5) away from the inlet of the transfer box (2) and above the frame body (1); The feature is that: an outer cylinder (8) is located on the side opposite to the glue coating roller (4) and the glue application roller (3), and an inner cylinder (9) is provided inside the outer cylinder (8), and a plurality of heating wires (11) are provided between the inner cylinder (9) and the outer cylinder (8). The bottom of the transmission box (2) is equipped with a connected box (12). One end of an air inlet pipe (71) near the inlet of the transmission box (2) is located between two sets of conveyor wheels (5), and the other end is connected to the box (12). One end of an air outlet pipe (72) located away from the inlet of the transmission box (2) is located between two sets of conveyor wheels (5), and the other end is connected to the box body (12), in which a fan (13) and an electric heating network (14) are installed.

2. The protective film coating apparatus according to claim 1, wherein: The plurality of heating wires (11) are distributed at equal intervals along the circumference.

3. The protective film coating apparatus according to claim 1, wherein: The electric heating network (14) is located inside the housing (12) on the side near the air outlet pipe (72).

4. The protective film coating apparatus according to claim 1, wherein: The height of the outer cylinder (8) is lower than the height of the top glue roller (3) and higher than the height of the coating roller (4).

5. The protective film coating apparatus according to claim 1, wherein: A support rod (10) is installed between the two sets of conveyor wheels (5) near the inlet of the transmission box (2).

6. The protective film coating apparatus according to claim 1, wherein: One set of conveyor wheels (5) is located near the inlet of the transmission box (2), while the other set of conveyor wheels (5) is located in the middle of the transmission box (2).

7. The protective film coating apparatus according to claim 1 or 6, wherein: Each set of conveyor wheels (5) consists of two conveyor wheels (5) arranged vertically at intervals.

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