Alumite coating and unwinding unit with static electricity eliminating device

Abstract

The utility model discloses an alumite coating unreeling unit with a static electricity eliminating device, which comprises a rack and a static electricity eliminating unit, the rack is composed of a reel support and a support which are opposite to each other, the static electricity eliminating unit is arranged on a vertical frame, the static electricity eliminating unit comprises a paper supporting roller and a static electricity eliminating rod, and the paper supporting roller and the static electricity eliminating rod are arranged on the rack. A secondary static elimination unit is arranged on the vertical frame on the film outlet side of the static elimination unit; according to the utility model, the static electricity eliminating device is arranged on the alumite coating and unwinding unit, so that static electricity on the alumite BOPET film layer can be eliminated, surface pollution, dust generation and the like of the BOPET film layer caused by static electricity accumulation can be prevented, the operation is easier during subsequent coating and aluminum plating, and the production efficiency is improved. And the static electricity elimination device adopts non-contact static electricity elimination to neutralize charges on the alumite film, a traditional humidification static electricity elimination mode is replaced, and the problems that humidification possibly corrodes equipment and influences the coating effect are avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of electroplated aluminum coating machine, and an electroplated aluminum coating unwinding unit with an electrostatic elimination device. Background Technology

[0002] Electroplated aluminum is a novel vacuum-metallized packaging material, composed of a BOPET film layer, a release layer, a coloring layer, a vacuum-metallized layer, and a hot-melt adhesive layer. Its preparation method involves coating the BOPET film layer with a release layer and a coloring layer, vacuum-metallizing to obtain the metallized layer, then coating with a hot-melt adhesive layer, and finally slitting and rewinding. During production, the BOPET film layer, which serves as the carrier for each coating layer, generates static electricity. During coating and unwinding, continuous friction easily accumulates static electricity. This static electricity causes the film surface to adsorb dust, fibers, and other impurities from the environment, forming coating defects and compromising the uniformity and integrity of the coating. The contaminants adsorbed by static electricity hinder the uniform deposition of aluminum atoms, resulting in spots, streaks, or uneven thickness in the metallized layer, affecting its appearance and functionality.

[0003] Currently, static electricity is typically eliminated by spraying water mist onto the rollers and electroplated aluminum. The water mist neutralizes the electric field, thus eliminating static electricity. However, during machine operation, the water mist accumulating on the rollers is often flung off due to the high-speed rotation, resulting in unsatisfactory static elimination. This also complicates machine cleaning and makes recycling of waste electroplated aluminum difficult. Furthermore, frequent water mist spraying keeps this part of the equipment in a very humid environment, causing parts to rust and increasing maintenance costs. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides an electroplated aluminum coating unwinding unit with a static elimination device that offers high static removal efficiency and minimal impact on equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an electroplated aluminum coating unwinding unit with an electrostatic elimination device, comprising a frame and an electrostatic elimination unit.

[0006] The frame consists of an unwinding bracket and a support frame. The unwinding bracket is equipped with an unwinding roller and a film exit guide roller assembly. The support frame is equipped with an electrical control box, and a gantry-type vertical frame is installed between the unwinding bracket and the support frame.

[0007] The static elimination unit is mounted on a stand and includes a paper support roller and an antistatic rod. The paper support roller is installed on the left side of the stand. The antistatic rod includes a square tube and a core. The tube is hollow and has mounting rollers at both ends. An elongated discharge hole is opened on the bottom surface of the tube. The core is installed inside the tube. Electric needles are installed on the core in a straight line at equal intervals, with the discharge needle tips facing the discharge hole. The antistatic rod is located between the paper support roller and the unwinding bracket. Both ends of the tube are connected to the stand via connecting rods. The tube is located below the conveying path of the electroplated aluminum film, and the discharge hole of the tube faces the electroplated aluminum film and is opposite to the coating surface of the electroplated aluminum film. The core of the antistatic rod is connected to a high-voltage power supply in the electrical control box via a wire.

[0008] As an optimized solution in this case, in order to facilitate the elimination of static electricity on the other side of the electroplated aluminum film coating, a secondary static electricity elimination unit is provided on the stand on the film exit side of the static electricity elimination unit. The secondary static electricity elimination unit includes an auxiliary roller, an electrostatic detector, and an auxiliary static eliminator. The auxiliary roller is mounted on the stand. The electrostatic detector is located between the paper support roller and the auxiliary roller and is connected to the stand via a mounting rod. It is also connected to the controller in the electrical control box via a wire. The electrostatic detector is located above the conveying path of the electroplated aluminum film, and its probe is facing downward and perpendicular to the electroplated aluminum film. The auxiliary static eliminator is mounted on the right stand of the electrostatic detector. The structure of the auxiliary static eliminator is the same as that of the static eliminator, and its discharge hole is set towards the electroplated aluminum film and opposite to the other side of the electroplated aluminum film coating.

[0009] As an optimized solution for this case, in order to achieve a better static electricity elimination effect, the distance between the static electricity eliminator and the auxiliary static electricity eliminator and the electroplated aluminum film surface is 5-10cm.

[0010] Furthermore, to facilitate adjustment of the distance between the antistatic rod, the auxiliary antistatic rod, and the electroplated aluminum film surface, the antistatic rod is connected to the connecting rod via a rotating shaft with a limit function, the auxiliary antistatic rod is connected to the upright via an electric telescopic rod, and the electric telescopic rod is connected to the controller in the electrical control box via a wire hole.

[0011] As an optimized solution for this case, in order to achieve better static electricity elimination and dust removal effects on the electroplated aluminum film surface, the distance between the ion fan and the electroplated aluminum film surface is 10-20cm.

[0012] Beneficial effects: ①. This utility model eliminates static electricity on the electroplated aluminum BOPET film layer by setting an electrostatic elimination device on the electroplated aluminum coating unwinding unit. This prevents surface contamination of the BOPET film layer caused by static electricity accumulation, resulting in dust and other issues. It also makes subsequent coating and aluminum plating easier to operate. Furthermore, the electrostatic elimination device uses non-contact static elimination to neutralize the charge on the electroplated aluminum film, replacing the traditional wet static elimination method and avoiding the problems that wet elimination may cause equipment corrosion and affect the coating effect.

[0013] ②. The static elimination device of this utility model adopts a two-stage static elimination structure, which can eliminate static electricity on both sides of the electroplated aluminum BOPET film layer, greatly improving the static elimination effect and effectively improving the coating effect of the electroplated aluminum BOPET film layer.

[0014] ③. By setting the antistatic rod and auxiliary antistatic rod to an adjustable distance, the distance between the above-mentioned equipment and the electroplated aluminum BOPET film layer can be adjusted according to the actual situation during use, so as to improve the static elimination effect and improve the practicality of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 for Figure 1 A schematic diagram of the main structure.

[0017] Figure 3 for Figure 1 A schematic diagram of the static elimination unit.

[0018] In the diagram: 1. Unwinding bracket; 2. Bracket; 3. Unwinding roll; 4. Stand; 5. Electrical control box; 6. Paper support roll; 7. Antistatic bar; 8. Auxiliary roll; 9. Static electricity detector; 10. Auxiliary antistatic bar; 11. Rotating shaft; 12. Electric telescopic rod. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the accompanying drawings are all in a very simplified form, using non-precise ratios, and are only used to facilitate and clearly illustrate the purpose of the embodiments of this utility model.

[0021] like Figure 1-3As shown, this embodiment discloses an electroplated aluminum coating unwinding unit with an electrostatic elimination device, which is used to eliminate static electricity generated on the surface of the electroplated aluminum film during the unwinding process. Specifically, it includes a frame and an electrostatic elimination unit.

[0022] See Figure 1 and Figure 2 The frame is composed of an unwinding bracket 1 and a support frame 2 facing each other. The unwinding bracket 1 is equipped with an unwinding roller 3 and a film exit guide roller group. The support frame 2 is equipped with an electrical control box 5, and a gantry-type vertical frame 4 is installed between the unwinding bracket 1 and the support frame 2.

[0023] See Figure 2 and Figure 3 The static elimination unit is mounted on the support frame 4. The static elimination unit includes a paper support roller 6 and an antistatic rod 7. The paper support roller 6 is installed on the left side of the support frame 4. The antistatic rod 7 includes a square tube and a core. The tube is hollow and has mounting rollers at both ends. An elongated discharge hole is opened on the bottom surface of the tube. The core is installed in the tube. Electric needles are installed on the core in a straight line at equal intervals, and the discharge needle tips face the discharge holes. The antistatic rod 7 is located between the paper support roller 6 and the unwinding bracket 1. Its two ends are connected to the support frame 4 through connecting rods. The tube is located below the conveying path of the electroplated aluminum film, and the discharge holes of the tube face the electroplated aluminum film and are opposite to the coating surface of the electroplated aluminum film. The core of the antistatic rod 7 is connected to the high-voltage power supply in the electrical control box 5 through a wire.

[0024] from Figure 3 As can be seen, a secondary static elimination unit is provided on the stand 4 on the film exit side of the static elimination unit. The secondary static elimination unit includes an auxiliary roller 8, a static detector 9, and an auxiliary static eliminator 10. The auxiliary roller 8 is installed on the stand 4. The static detector 9 is located between the paper support roller 6 and the auxiliary roller 8 and is connected to the stand 4 through a mounting rod. It is also connected to the controller in the electrical control box 5 through a wire. The static detector 9 is located above the conveying path of the electroplated aluminum film surface, and its probe is facing down and perpendicular to the electroplated aluminum film. The auxiliary static eliminator 10 is installed on the right stand 4 of the static detector 9. The structure of the auxiliary static eliminator 10 is the same as that of the static eliminator 7. Its discharge hole faces the electroplated aluminum film and is opposite to the other side of the electroplated aluminum film coating surface.

[0025] The distance between the antistatic rod 7 and the auxiliary antistatic rod 10 and the electroplated aluminum film surface is 7cm.

[0026] The static eliminator 7 is connected to the connecting rod via a pivot 11 with a limit function. The auxiliary static eliminator 10 is connected to the frame 4 via an electric telescopic rod 13, and the electric telescopic rod 12 is connected to the controller in the electrical control box 5 with a wire hole.

[0027] During operation, the unwinding roller 3 begins unwinding. When the electroplated aluminum film reaches the static elimination unit, the tip of the electrostatic rod 7 discharges. Under high voltage, the air around the tip of the electrostatic rod is ionized, generating positive and negative ions. These ions diffuse to the coating surface of the electroplated aluminum BOPET film layer, thereby neutralizing the static charge. At this point, most of the static electricity in the electroplated aluminum BOPET film layer is eliminated.

[0028] When the electroplated aluminum reaches the secondary electrostatic elimination unit, the probe of the electrostatic detector 9 performs electrostatic detection on the other side of the electroplated BOPET film coating. When the value is greater than the preset value, the information is transmitted to the controller in the electrical control box 5. The controller opens the auxiliary static elimination rod 10 to eliminate static electricity on the other side of the electroplated aluminum BOPET film coating. If the static charge value on the other side of the electroplated aluminum BOPET film coating is lower than or within the preset value range, no static elimination treatment is required, and the process proceeds to the next coating process.

[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An electroplated aluminum coating unwinding unit with an electrostatic elimination device, comprising a frame and an electrostatic elimination unit, characterized in that: The frame is composed of an unwinding bracket (1) and a support frame (2) facing each other. The unwinding bracket (1) is equipped with an unwinding roller (3) and a film exit guide roller group. The support frame (2) is equipped with an electrical control box (5). A gantry-type vertical frame (4) is installed between the unwinding bracket (1) and the support frame (2). The static elimination unit is set on the stand (4). The static elimination unit includes a paper support roller (6) and an antistatic rod (7). The paper support roller (6) is installed on the left side of the stand (4). The antistatic rod (7) includes a square tube and a core. The tube is hollow and has mounting rollers at both ends. A long strip-shaped discharge hole is opened on the bottom surface of the tube. The core is installed in the tube. Electric needles are installed on the core in a straight line at equal intervals, and the discharge needle tips face the discharge holes. The antistatic rod (7) is located between the paper support roller (6) and the unwinding bracket (1). The two ends of its tube are connected to the stand (4) through connecting rods. The tube is located below the conveying path of the electroplated aluminum film, and the discharge holes of the tube face the electroplated aluminum film and are opposite to the coating surface of the electroplated aluminum film. The core of the antistatic rod (7) is connected to the high-voltage power supply in the electrical control box (5) through a wire.

2. The electroplated aluminum coating unwinding unit with an electrostatic elimination device according to claim 1, characterized in that: The electrostatic elimination unit is provided with a secondary electrostatic elimination unit on the stand (4) on the film exit side. The secondary electrostatic elimination unit includes an auxiliary roller (8), an electrostatic detector (9), and an auxiliary electrostatic eliminator (10). The auxiliary roller (8) is installed on the stand (4). The electrostatic detector (9) is located between the paper support roller (6) and the auxiliary roller (8) and is connected to the stand (4) through a mounting rod. It is also connected to the controller in the electrical control box (5) through a wire. The electrostatic detector (9) is located above the conveying path of the electroplated aluminum film surface, and its probe is facing down and perpendicular to the electroplated aluminum film. The auxiliary electrostatic eliminator (10) is installed on the stand (4) to the right of the electrostatic detector (9). The structure of the auxiliary electrostatic eliminator (10) is the same as that of the electrostatic eliminator (7). Its discharge hole is set towards the electroplated aluminum film and is opposite to the other side of the electroplated aluminum film coating surface.

3. The electroplated aluminum coating unwinding unit with an electrostatic elimination device according to claim 2, characterized in that: The distance between the static eliminator (7) and the auxiliary static eliminator (10) and the electroplated aluminum film surface is 5-10cm.

4. The electroplated aluminum coating unwinding unit with an electrostatic elimination device according to claim 3, characterized in that: The static eliminator (7) is connected to the connecting rod via a rotating shaft (11) with a limit function. The auxiliary static eliminator (10) is connected to the frame (4) via an electric telescopic rod (12), and the electric telescopic rod (12) is connected to the controller in the electrical control box (5) with the wire hole.

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