Online copper foil drying equipment

Abstract

The utility model relates to the technical field of copper foil manufacturing equipment, and provides on-line copper foil drying equipment which comprises a rack and conveying rollers. The conveying roller is arranged on the rack and used for conveying copper foil, and the heating roller, the pressing roller assembly and the blowing assembly are arranged on the rack; the compression roller assembly comprises a rotating shaft, a swing arm and a compression roller; the rotating shaft is arranged on the rack; one end of the swing arm is sleeved on the rotating shaft, and the other end of the swing arm is a movable end; the pressing roller is arranged at the movable end of the swing arm, is lapped above the heating roller and is used for pressing the copper foil conveyed between the pressing roller and the heating roller; the output end of the blowing assembly faces the position between the pressing roller and the heating roller. According to the drying equipment, the temperatures of all positions of the copper foil can be kept uniform in the drying process, and the problems that the local drying effect of the copper foil is poor, and even the copper foil is oxidized or deformed are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of copper foil manufacturing equipment, specifically to an online copper foil drying device. Background Technology

[0002] During the slitting process of copper foil, the friction between the cutting tools and the copper foil inevitably causes fine particles to detach, forming copper powder. If this residual copper powder is not treated, it can affect subsequent use, such as causing short circuits in lithium batteries. Therefore, cleaning the copper powder is necessary. Currently, water washing is commonly used to remove residual impurities from the copper foil surface. After washing, the surface of the copper foil is dried. Traditional drying methods use hot air to dry the copper foil; however, this method suffers from uneven temperature distribution, resulting in poor drying in certain areas and even causing oxidation or deformation of the copper foil.

[0003] CN208276993U discloses an ultra-thin electrolytic copper foil shearing and powder particle removal device. Its key technical features include a frame with an unwinding roller on it. Several first guide rollers are arranged along the length of the frame on the side of the unwinding roller, and the copper foil to be processed is wound around each of the first guide rollers. A slitting mechanism is provided between two of the first guide rollers. An ultrasonic cleaning tank is provided between two first guide rollers on the right side of the slitting mechanism. A second guide roller is provided inside the ultrasonic cleaning tank, and ultrasonic vibrating plates are provided on the inner walls of the ultrasonic cleaning tank on both sides of the second guide roller. A control unit is provided on the frame, and the ultrasonic vibrating plates are connected to the control unit. A drying chamber is provided on the frame to the right of the ultrasonic cleaning tank. A winding mechanism is provided on the frame to the right of the drying chamber. The above patent document slits and cleans the copper foil, first removing some moisture by squeezing the copper foil, and then sending it into the drying chamber to dry it. Although this method can remove residual moisture on the surface of the copper foil, it still suffers from uneven temperature distribution.

[0004] Based on this, the technical problem to be solved in this case is: how to further optimize the online drying of copper foil and solve the problem of uneven temperature during drying. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an online copper foil drying device. This drying device can maintain a uniform temperature throughout the copper foil during the drying process, preventing poor local drying effect of the copper foil, or even causing oxidation or deformation of the copper foil.

[0006] The technical solution of this utility model is:

[0007] An online copper foil drying device includes a frame and a conveyor roller; the conveyor roller is mounted on the frame and used to convey copper foil, and also includes a heating roller, a pressure roller assembly, and an air blowing assembly mounted on the frame; the pressure roller assembly includes a rotating shaft, a swing arm, and a pressure roller; the rotating shaft is mounted on the frame; one end of the swing arm is sleeved on the rotating shaft, and the other end of the swing arm is a movable end; the pressure roller is mounted on the movable end of the swing arm and overlaps the heating roller, used to press the copper foil conveyed between the pressure roller and the heating roller; the output end of the air blowing assembly faces between the pressure roller and the heating roller.

[0008] In the above-mentioned online copper foil drying equipment, the pressure roller, heating roller, and air blowing assembly are arranged sequentially back and forth along the copper foil conveying direction.

[0009] In the above-mentioned online copper foil drying equipment, the conveying rollers include a first conveying roller and a second conveying roller arranged on the frame; the first conveying roller and the pressure roller are arranged back and forth along the conveying direction of the copper foil, and the copper foil is conveyed inclined upward; the pressure roller and the second conveying roller are arranged back and forth along the conveying direction of the copper foil, and the copper foil is conveyed inclined downward.

[0010] In the above-mentioned online copper foil drying equipment, the surface of the pressure roller is provided with a water-absorbing layer.

[0011] In the above-mentioned online copper foil drying equipment, the heating roller includes an electric slip ring, an outer roller, an inner roller, and a heating coil; the outer roller is rotatably connected to the frame through the electric slip ring; a heat insulation layer is provided between the outer roller and the inner roller; the heating coil is disposed inside the inner roller and is used for heating.

[0012] In the aforementioned online copper foil drying equipment, the heat insulation layer is filled with alumina balls.

[0013] In the above-mentioned online copper foil drying equipment, the heating roller also includes a heat-conducting plate, and heat-conducting plates are provided on both sides of the inner roller; the heat-conducting plate contacts the outer roller to enable the heat of the inner roller to be quickly transferred to the outer roller.

[0014] In the above-mentioned online copper foil drying equipment, the air blowing assembly includes a base, an air duct, and an air jet head; the base is mounted on the frame; the air duct is mounted on the base; the air duct has an air inlet and an air outlet; the air jet head is connected to the air outlet and faces between the pressure roller and the heating roller.

[0015] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0016] This invention uses a pressure roller assembly to press copper foil onto a heating roller, ensuring that all parts of the copper foil are in contact with the heating roller, thereby maintaining a uniform temperature throughout the copper foil. An air blowing assembly then blows air onto the copper foil between the pressure roller and the heating roller, allowing moisture to quickly move away from the copper foil and preventing moisture from re-adhering to it. Furthermore, this pressing, heating, and air blowing drying method helps maintain the flatness of the copper foil and prevents it from oxidizing or deforming. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention;

[0018] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0019] Figure 3 This is a side view of Embodiment 1 of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the heating roller in Embodiment 1 of this utility model.

[0021] The correspondence between the labels in the diagram is as follows:

[0022] Frame 1; First conveyor roller 2; Pressure roller assembly 3; Rotating shaft 31; Swing arm 32; Pressure roller 33; Heating roller 4; Electric slip ring 40; Outer roller 41; Inner roller 42; Heating coil 43; Alumina ball 44; Heat-conducting plate 45; Air blowing assembly 5; Base 51; Air duct 52; Air inlet 521; Air outlet 522; Air jet head 53; Second conveyor roller 6; Copper foil a. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] Example 1

[0025] refer to Figures 1-4An online copper foil drying device includes a frame 1 and a conveyor roller; the conveyor roller is mounted on the frame 1 and used to convey copper foil a; the device also includes a heating roller 4, a pressure roller assembly 3, and an air blowing assembly 5 mounted on the frame 1; the pressure roller assembly 3 includes a rotating shaft 31, a swing arm 32, and a pressure roller 33; the rotating shaft 31 is mounted on the frame 1; one end of the swing arm 32 is sleeved on the rotating shaft 31, and the other end of the swing arm 32 is a movable end; the pressure roller 33 is mounted on the movable end of the swing arm 32 and overlaps the heating roller 4, and is used to press the copper foil a conveyed between the pressure roller 33 and the heating roller 4; the output end of the air blowing assembly 5 faces the space between the pressure roller 33 and the heating roller 4.

[0026] In practical applications, after copper foil a is cut and cleaned, it enters the drying equipment. The conveyor roller drives the copper foil a to be transported onto the heating roller 4. At this time, the pressure roller 33 of the pressure roller assembly 3 naturally presses on the heating roller 4, so that all parts of the copper foil a are in contact with the heating roller 4, thereby maintaining a uniform temperature throughout the copper foil a. The air blowing assembly 5 blows air onto the copper foil a between the pressure roller 33 and the heating roller 4, allowing the moisture to quickly move away from the copper foil a and preventing the moisture from adhering to the copper foil a again. In addition, this pressing, heating, and blowing drying method also helps to keep the copper foil a flat and avoid oxidation or deformation of the copper foil a.

[0027] In this embodiment, specifically, the conveying roller includes a first conveying roller 2 and a second conveying roller 6 disposed on the frame 1; the first conveying roller 2 and the pressure roller 33 are arranged back and forth along the conveying direction of the copper foil a, and the copper foil a is conveyed inclined upward; the pressure roller 33 and the second conveying roller are arranged back and forth along the conveying direction of the copper foil a, and the copper foil a is conveyed inclined downward.

[0028] In this embodiment, more specifically, the first conveying roller 2, the pressure roller 33, the heating roller 4, the air blowing assembly 5, and the second conveying roller 6 are arranged sequentially back and forth along the conveying direction of the copper foil a.

[0029] Under this design, before the copper foil a enters the drying position, the moisture flows down along the inclined copper foil a, reducing the amount of processing. Furthermore, the inclined copper foil a is subjected to more reasonable force when pressed down. The pressure roller 33 applies a vertical downward force and a horizontal force to the heating roller 4 to the copper foil a, thereby ensuring that the copper foil a contacts the heating roller 4 at all points while avoiding excessive pressure that could cause the copper foil a to be imprinted.

[0030] In a preferred embodiment, the surface of the pressure roller 33 is provided with a water-absorbing layer. Under this preferred embodiment, the pressure roller 33 can accelerate the removal of residual moisture while providing downward pressure, and the water-absorbing layer can maintain a certain degree of dryness under the action of the blowing assembly and the heating roller 4.

[0031] It should be noted that the heating roller 4 in this embodiment is an electromagnetic heating roller. Specifically, in this embodiment, the heating roller 4 includes an electric slip ring 40, an outer roller 41, an inner roller 42, and a heating coil 43; the outer roller 41 is rotatably connected to the frame 1 via the electric slip ring; a heat insulation layer is provided between the outer roller 41 and the inner roller 42; the heating coil 43 is disposed inside the inner roller 42 and used for heating. More specifically, the heat insulation layer is filled with alumina balls 44; the heating roller 4 also includes a heat-conducting plate 45, with heat-conducting plates 45 provided on both sides of the inner roller 42; the heat-conducting plates 45 contact the outer roller 41 to rapidly transfer heat from the inner roller 42 to the outer roller 41.

[0032] With the above design, the heating roller 4 can rotate, and the alumina ball 44 moves in the heat insulation layer during the rotation, so that the surface heat distribution of the heating roller 4 is more uniform, thereby further ensuring that the temperature of the copper foil a is uniform and drying is synchronous; at the same time, the design of the heat-conducting plate 45 enables the outer roller 41 to be heated quickly.

[0033] In this embodiment, preferably, the air blowing assembly 5 includes a base 51, an air duct 52, and a jet nozzle 53; the base 51 is mounted on the frame 1; the air duct 52 is mounted on the base 51; the air duct 52 has an air inlet 521 and an air outlet 522; the jet nozzle 53 communicates with the air outlet 522 and faces between the pressure roller 33 and the heating roller 4. Specifically, the jet nozzle 53 is a flat nozzle and the blowing range covers the width of the copper foil a. Furthermore, in this embodiment, the air inlet 521 is connected to an external hot air blower to further improve the drying rate. Of course, this embodiment does not exclude the use of a cold air blower.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A copper foil on-line drying apparatus comprising a frame, a conveyance roll; the conveyance roll is provided on the frame and used for conveying the copper foil, characterized in that, The heating roller, the pressing roller assembly and the blowing assembly are arranged on the frame; the pressing roller assembly comprises a rotating shaft, a swing arm and a pressing roller; the rotating shaft is arranged on the frame; one end of the swing arm is sleeved on the rotating shaft, and the other end of the swing arm is a movable end; the pressing roller is arranged on the movable end of the swing arm and overlaps the heating roller, and is used for pressing the copper foil conveyed between the pressing roller and the heating roller; the output end of the blowing assembly faces between the pressing roller and the heating roller.

2. The copper foil on-line drying apparatus according to claim 1, wherein The pressing roller, the heating roller and the blowing assembly are arranged in sequence along the conveying direction of the copper foil.

3. The copper foil on-line drying apparatus according to claim 1, wherein The conveying roller comprises a first conveying roller and a second conveying roller arranged on the frame; the first conveying roller and the pressing roller are arranged in sequence along the conveying direction of the copper foil and convey the copper foil obliquely upward; the pressing roller and the second conveying roller are arranged in sequence along the conveying direction of the copper foil and convey the copper foil obliquely downward.

4. The copper foil on-line drying apparatus according to claim 1, wherein The surface of the pressing roller is provided with a water absorption layer.

5. The copper foil on-line drying apparatus according to claim 1, wherein The heating roller comprises an electric slip ring, an outer roller, an inner roller and a heating coil; the outer roller is rotatably connected to the frame through the electric slip ring; a heat preservation layer is arranged between the outer roller and the inner roller; and the heating coil is arranged in the inner roller and is used for heating.

6. The copper foil on-line drying apparatus according to claim 5, wherein The heat preservation layer is filled with alumina balls.

7. The copper foil on-line drying apparatus according to claim 6, wherein The heating roller further comprises a heat conduction plate, and the two sides of the inner roller are provided with the heat conduction plates; the heat conduction plates are in contact with the outer roller and are used for rapidly transferring the heat of the inner roller to the outer roller.

8. The copper foil on-line drying apparatus according to claim 1, wherein The blowing assembly comprises a base, an air pipe and a jet head; the base is arranged on the frame; the air pipe is arranged on the base; the air pipe is provided with an air inlet and an air outlet; the jet head is in communication with the air outlet and faces between the pressing roller and the heating roller.

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