Copper foil drying oven

Abstract

This invention provides a drying oven for copper foil, comprising a box body (1), a side door (2), and a heater (3). The box body (1) is a hollow cavity. One end of the side door (2) is movably connected to the side wall of the box body (1) for opening and closing the box body (1). Long strip-shaped material inlets (4) are parallel to each other on the two opposite side walls of the box body (1), and the size of the material inlets (4) is sufficient for the foil to pass through. The heater (3) is installed inside the box body (1) for heating and drying the foil. This invention can ensure that the copper foil is heated evenly throughout its length and width, resulting in consistent product quality and increasing the drying speed of the copper foil. Furthermore, the low temperature of the outer wall of the box body can improve the working environment and prevent burns to personnel.

Description

Technical Field

[0001] This utility model relates to the field of copper foil drying technology, specifically to a drying oven for copper foil drying. Background Technology

[0002] In electrolytic copper foil production lines, coating production lines, and surface treatment lines for copper foil, ovens are mainly used to dry the produced foil materials, remove residual solvents and moisture from the foil surface, and ensure that the physical properties of the copper foil (such as oxidation resistance and adhesion) meet the standards, thereby ensuring the stability, efficiency, and safety of the copper foil drying process.

[0003] However, since the drying oven is generally located at the end of the production line, the working temperature inside the drying oven is generally between 200℃ and 300℃, and the drying oven is relatively large in order to achieve the drying efficiency.

[0004] Traditional drying ovens often use a single-layer steel plate shell, or only have simple insulation padding inside. Heat can easily be conducted and radiated into the surrounding environment through the shell. At operating temperatures of 200℃-300℃, the surface temperature of the shell can reach over 80℃. This can generate significant heat radiation for personnel at the end of the production line (leading to increased ambient temperature and affecting worker comfort), and poses a direct risk of burns to those who accidentally touch the shell or approach the oven opening. Utility Model Content

[0005] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a drying oven for copper foil that ensures uniform heating across the entire length and width of the copper foil, maintains consistent product quality, and increases the drying speed of the copper foil. Furthermore, the low temperature of the outer wall of the oven improves the working environment and prevents burns to personnel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A drying oven for copper foil includes a box body, a side door, and a heater. The box body is a hollow cavity. One end of the side door is movably connected to the side wall of the box body for opening and closing the box body. Two parallel elongated material openings are provided on the two opposite side walls of the box body, and the size of the material openings is sufficient for the foil to pass through. The heater is located inside the box body for heating and drying the foil.

[0007] Preferably, the heaters are arranged in parallel, one above the other, inside the box via a bracket. The size of the cavity reserved between the two heaters is exactly matched with the size of the material inlets on both sides, forming a conveying path for the foil. The foil enters the box from one side of the material inlet, is conveyed between the two heaters and heated and dried, and then is conveyed out of the box from the other side of the material inlet.

[0008] Preferably, the sidewall of the enclosure is made of four layers of metal sheets, which are arranged from the inside out as a first metal sheet, a second metal sheet, a third metal sheet, and a fourth metal sheet. Three hollow layers are formed between the first metal sheet, the second metal sheet, the third metal sheet, and the fourth metal sheet, and each of the three hollow layers is filled with a high-temperature resistant insulation material.

[0009] Preferably, the first metal plate and the second metal plate are welded together by a metal grid, which can improve the structural strength.

[0010] Preferably, the side door is made of at least three layers of metal sheets, which form two hollow layers, each filled with a high-temperature resistant insulation material.

[0011] Preferably, the side door and the side opening of the cabinet are sealed with a high-temperature resistant sealing ring, so that installation and maintenance personnel can perform equipment maintenance and installation through the side door, and also facilitate foil threading operations.

[0012] Preferably, multiple temperature sensors are evenly arranged along the length of the heater inside the chamber to detect the temperature inside the chamber in real time and control the heating power of the heater through an external control unit.

[0013] Preferably, the metal sheet of this utility model is a high-temperature resistant metal sheet, which can be stainless steel sheet, aluminum sheet, etc.

[0014] Preferably, the high-temperature resistant insulation material of this utility model can be one of aluminum silicate fiber, alumina fiber, alumina aerogel, microporous calcium silicate, foam ceramic, or high-temperature rock wool.

[0015] Preferably, the box body is a hollow cuboid structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention employs a multi-layer composite insulation structure, combining high-efficiency thermal insulation materials with the inner and outer cavities to minimize heat loss from the chamber, thereby reducing the load on the heating system. The energy consumption of this invention is significantly lower than that of ordinary single-layer insulated ovens. The temperature gradient within the working area of ​​this invention is small (typically controllable within ±3℃), ensuring uniform heating of the copper foil across its entire length and width, consistent product quality, and increased copper foil drying speed. The low temperature of the outer wall of the chamber improves the working environment and prevents burns to personnel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention after removing the side door and the side opening of the box body; Figure 3This is a schematic diagram of the side door structure of this utility model.

[0018] in: 1. Box body; 2. Side door; 3. Heater; 4. Material inlet; 5. First metal plate; 6. Second metal plate; 7. Third metal plate; 8. Fourth metal plate; 9. Hollow layer; 10. High-temperature resistant insulation material; 11. Metal grille; 12. High-temperature resistant sealing ring; 13. Temperature sensor. Detailed Implementation

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

[0020] like Figures 1-3 As shown, a drying oven for copper foil includes a box body 1, a side door 2, and a heater 3. The box body 1 is a hollow cavity. Normally, the size of the box body 1 can be made according to the size of the foil. In this embodiment, the box body 1 is set as a rectangular hollow structure to facilitate the placement of the foil. One end of the side door 2 is movably connected to the side wall of the box body 1 for opening and closing the box body 1. In this utility model, the side doors 2 on both sides of the box body 1 are all installed in this movable manner to facilitate the opening and closing of the side doors. Long strip-shaped material inlets 4 are opened parallel to each other on the two opposite side walls of the box body 1. The size of the material inlets 4 is sufficient for the foil to pass through. The heater 3 is set inside the box body 1 for heating and drying the foil.

[0021] In this embodiment, the heaters 3 are arranged in parallel, one above the other, inside the housing 1 via a bracket. The size of the cavity reserved between the two heaters 3 is exactly matched with the size of the material inlets 4 on both sides, forming a conveying path for the foil. The foil enters the housing 1 from the material inlet 4 on one side, is then conveyed between the two heaters 3 and heated and dried, and then conveyed out to the outside of the housing 1 from the material inlet 4 on the other side.

[0022] In this embodiment, the sidewall of the box 1 is made of four layers of metal plates, which are arranged from the inside out as a first metal plate 5, a second metal plate 6, a third metal plate 7, and a fourth metal plate 8. Three hollow layers 9 are formed between the first metal plate 5, the second metal plate 6, the third metal plate 7, and the fourth metal plate 8. The three hollow layers 9 are filled with high-temperature resistant insulation material 10. The sidewall of the box made of four layers of metal plates is used in this utility model to further insulate the inside of the box.

[0023] In this embodiment, in order to improve the thermal deformation structural strength of the box wall, the present invention selects to weld a metal grid 11 between the first metal plate 5 and the second metal plate 6, which can improve the structural strength.

[0024] In this embodiment, in order to further improve the heat preservation and sealing effect of the oven, the side door 2 of this utility model is made of at least three layers of metal plates, the three layers of metal plates form two hollow layers, and the two hollow layers are respectively filled with high temperature resistant insulation material 10.

[0025] In this embodiment, the side door 2 and the side opening of the housing 1 are sealed by a high-temperature resistant sealing ring 12, so as to facilitate the installation and maintenance personnel to carry out equipment maintenance and installation through the side door, and also to facilitate the foil threading operation. In this embodiment, multiple temperature sensors 13 are evenly arranged along the length of the heater 3 inside the housing 1. The temperature sensors 13 are used to detect the temperature inside the housing 1 in real time and control the heating power of the heater through an external control unit.

[0026] In this embodiment, the metal sheet is a high-temperature resistant metal sheet, which can be selected from stainless steel sheet or aluminum sheet.

[0027] In this embodiment, the high-temperature resistant insulation material 10 can be one of aluminum silicate fiber, alumina fiber, alumina aerogel, microporous calcium silicate, foam ceramic, or high-temperature rock wool.

[0028] In use, the heaters 3 inside the housing 1 are installed in place, the side door 2 is sealed and closed, the foil is fed into the housing 1 through the material inlet 4 on one side, the heaters 3 are turned on, and the foil is transferred between the two heaters 3 and heated and dried. After the foil is dried, it is transferred out to the outside of the housing 1 through the material inlet 4 on the other side, thus completing the drying operation of the foil.

[0029] The side wall of the box 1 is made of four layers of metal plates, which are arranged from the inside out as follows: first metal plate 5, second metal plate 6, third metal plate 7, and fourth metal plate 8. Three hollow layers 9 are formed between the first metal plate 5, second metal plate 6, third metal plate 7, and fourth metal plate 8. The three hollow layers 9 are filled with high-temperature resistant insulation material 10. The side wall of the box made of four layers of metal plates is used in this utility model to further insulate the inside of the box during the heating and drying process of the foil material.

[0030] In order to improve the structural strength of the box wall in the heat deformation process, this utility model selects to weld metal grid 11 between the first metal plate 5 and the second metal plate 6, which can improve the structural strength.

[0031] To further improve the heat preservation and sealing effect of the oven, the side door 2 of this utility model is made of at least three layers of metal plates, which form two hollow layers, and the two hollow layers are filled with high-temperature resistant insulation material 10 respectively.

[0032] To facilitate equipment maintenance and installation by installation and maintenance personnel through the side door, and to facilitate foil threading operations, the side door 2 of this utility model is sealed to the side opening of the box body 1 by a high-temperature resistant sealing ring 12. To facilitate real-time temperature monitoring inside the chamber 1, multiple temperature sensors 13 are also evenly arranged along the length of the heater 3.

[0033] Compared with a single-layer insulated oven, the three-layer composite insulation structure and sealed air layer of this utility model can reduce the heat loss of the oven body by more than 40%, keep the outer wall temperature below 50°C, and keep the transverse temperature difference inside the oven at no more than ±3°C. At the same time, the drying speed of copper foil is increased by 15%.

Claims

1. A drying oven for drying copper foil, characterized in that, The device includes a housing (1), a side door (2), and a heater (3). The housing (1) is a hollow cavity. One side of the side door (2) is movably connected to the side wall of the housing (1) for opening and closing the housing (1). Long strip-shaped material inlets (4) are provided parallel on the side walls of the two opposite housings (1). The size of the material inlets (4) is sufficient for the foil to pass through. The heater (3) is set inside the housing (1) for heating and drying the foil.

2. The drying oven for copper foil as described in claim 1, characterized in that, The heaters (3) are arranged in parallel in the box (1) by the support, one above the other. The size of the cavity reserved between the two heaters (3) is exactly matched with the size of the material inlets (4) on both sides, forming a conveying path for the foil. The foil enters the box (1) from the material inlet (4) on one side, is conveyed between the two heaters (3) and heated and dried, and then is conveyed out of the box (1) from the material inlet (4) on the other side.

3. The drying oven for copper foil as described in claim 2, characterized in that, The side wall of the box (1) is made of four layers of metal plates, from the inside out: the first metal plate (5), the second metal plate (6), the third metal plate (7), and the fourth metal plate (8). The first metal plate (5), the second metal plate (6), the third metal plate (7), and the fourth metal plate (8) form three hollow layers (9) with each other. The three hollow layers (9) are filled with high-temperature resistant insulation material (10).

4. The drying oven for copper foil as described in claim 3, characterized in that, The first metal plate (5) and the second metal plate (6) are welded together by a metal grid (11).

5. The drying oven for copper foil as described in claim 1, characterized in that, The side door (2) is made of at least three layers of metal sheets, which form two hollow layers, and the two hollow layers are filled with high-temperature resistant insulation material (10).

6. The drying oven for copper foil as described in claim 5, characterized in that, The side door (2) and the side opening of the box (1) are sealed by a high-temperature resistant sealing ring (12).

7. The drying oven for copper foil as described in claim 6, characterized in that, Inside the housing (1), multiple temperature sensors (13) are also evenly arranged along the length of the heater (3).

8. The drying oven for copper foil as described in claim 7, characterized in that, The metal sheet is a high-temperature resistant metal sheet, and can be selected from stainless steel sheet or aluminum sheet.

9. The drying oven for copper foil as described in claim 6, characterized in that, The high-temperature resistant insulation material (10) is one of aluminum silicate fiber, alumina fiber, alumina aerogel, microporous calcium silicate, foam ceramic, or high-temperature rock wool.

10. The drying oven for copper foil as described in claim 6, characterized in that, The box (1) is a hollow cuboid structure.

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