Folding walking belt drying oven and double-sided coating production line

Abstract

The utility model discloses a folding tape-walking drying oven and a double-sided coating production line, the folding tape-walking drying oven comprises an oven body, a plurality of air floatation guide rollers and tuyeres, two opposite sides of the oven body are provided with a feed port and a discharge port, the plurality of air floatation guide rollers are parallel to the bottom surface of the oven body and are arranged on the side wall of the oven body, and the tuyeres are arranged on the air floatation guide rollers. The plurality of air floatation guide rollers are arranged in an up-and-down staggered manner; air floatation guide rollers are arranged in the box body, an air nozzle is arranged between every two adjacent air floatation guide rollers in the vertical direction, the air nozzles are used for conveying hot air, a fan assembly connected to the interior of the box body is arranged on the box body, and the fan assembly is connected with the air floatation guide rollers and the air nozzles and used for providing high-temperature hot air for the air floatation guide rollers and the air nozzles. The folding belt conveying device has the advantages that folding belt conveying is adopted, and equipment space occupation is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a folding conveyor drying oven and a double-sided coating production line. Background Technology

[0002] Current ovens all have straight conveyor belts, with the belt length matching the oven length. High-speed extrusion coating machines typically have ovens that are up to 60 meters long. Double-sided coating drying requires two ovens, with the second oven mounted on a steel platform at a considerable height. The oven hull is fixed inside the oven, which has a narrow interior space, making cleaning and maintenance inconvenient. The overall length and height of the equipment take up a lot of space, and sheet metal ovens are expensive.

[0003] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a folding conveyor drying oven and a double-sided coating production line, which solves the problem of large space occupation of traditional flat conveyor drying ovens.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A folding conveyor drying oven includes a box body, multiple air flotation guide rollers, and air nozzles. The box body has an inlet and an outlet on opposite sides. The multiple air flotation guide rollers are arranged parallel to the bottom surface of the box body on the side wall of the box body, and the multiple air flotation guide rollers are arranged vertically and alternately. An air nozzle is provided between two adjacent air flotation guide rollers for conveying hot air. A fan assembly connected to the inside of the box body is provided on the box body. The fan assembly is connected to the air flotation guide rollers and the air nozzles respectively to provide high-temperature hot air to the air flotation guide rollers and the air nozzles respectively.

[0007] In the above structure, the air flotation guide roller includes a first air flotation roller and a second air flotation roller. The two first air flotation rollers are respectively disposed near the feed inlet and near the discharge outlet. A plurality of second air flotation rollers are disposed between the two first air flotation rollers. A partition is disposed in the middle of the second air flotation roller, and the partition divides the internal cavity of the second air flotation roller into a first inner cavity and a second inner cavity.

[0008] In the above structure, the fan assembly includes a high-pressure fan, which is disposed on the top of the housing and is connected to the first inner cavity and the second inner cavity respectively, so as to provide high-pressure airflow to the first inner cavity and the second inner cavity respectively.

[0009] In the above structure, the first air-bearing roller is used to rotate the foil by 90°, and the second air-bearing roller is used to rotate the foil by 180°.

[0010] In the above structure, the fan assembly further includes a circulating fan, and the air nozzles include single-sided air nozzles and double-sided air nozzles. The single-sided air nozzles are disposed between the first air flotation roller and an adjacent second air flotation roller, and the double-sided air nozzles are disposed between two adjacent second air flotation rollers. The circulating fan is disposed at the top of the housing and is used to supply air to each of the single-sided air nozzles and double-sided air nozzles respectively.

[0011] In the above structure, heating components are provided between the first air flotation roller and the adjacent second air flotation roller, as well as between each adjacent second air flotation roller. The plurality of heating components are located on both sides of the conveyor belt path, and the heating components are used to dry the foil.

[0012] In the above structure, the foil surface between the first air flotation roller and the adjacent second air flotation roller is parallel to the foil surface between the adjacent second air flotation rollers.

[0013] In the above structure, the box body is provided with double doors on both the front and rear sides along the axial direction of the air flotation guide roller, and the double doors are provided with transparent observation windows.

[0014] Based on the above-mentioned folded conveyor drying oven, this application also provides:

[0015] A double-sided coating production line includes a folded conveyor drying oven with the structure described above, and further includes an unwinding mechanism, a coating mechanism, and a winding mechanism arranged in sequence. The coating mechanism is used to coat foil on both sides, and at least one section of the folded conveyor drying oven is disposed between the coating mechanism and the winding mechanism to dry the foil.

[0016] The beneficial effects of this utility model are as follows: This application provides a folding conveyor drying oven, in which air-floating guide rollers are arranged alternately on the upper and lower parts of the oven to guide the conveyor belt of the foil material, thereby realizing the folding conveyor belt inside the oven. Compared with the straight conveyor belt of the traditional oven, the length of the oven is effectively shortened and the space occupied by the equipment is reduced. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;

[0020] Figure 3This is a schematic diagram of the cross-sectional structure of the second air flotation roller of this utility model;

[0021] Figure 4 This is a schematic diagram of the double-sided coating production line of this utility model.

[0022] Reference numerals: 1. Box body; 11. Feed inlet; 12. Discharge outlet; 13. Double door; 131. Transparent observation window; 2. Air flotation guide roller; 21. First air flotation roller; 22. Second air flotation roller; 221. Partition; 222. First inner cavity; 223. Second inner cavity; 3. Fan assembly; 31. High-pressure fan; 32. Circulating fan; 4. Nozzle; 41. Single-sided nozzle; 42. Double-sided nozzle; 5. Heating assembly; 6. Unwinding mechanism; 7. Coating mechanism; 8. Rewinding mechanism; 81. Tracking assembly; 82. Traction assembly; 83. Rewinding assembly; 9. Foil. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0025] Reference Figures 1 to 4This application provides a folding conveyor drying oven for use in a double-sided coating production line, which can dry both sides of foil 9. It includes a box body 1, multiple air flotation guide rollers 2 and air nozzles 4. The box body 1 has an inlet 11 and an outlet 12 on opposite sides. The multiple air flotation guide rollers 2 are arranged parallel to the bottom surface of the box body 1 on the side wall of the box body 1 and are arranged vertically and horizontally. An air nozzle 4 is provided between two adjacent air flotation guide rollers 2. The air nozzles 4 are used to dry both sides of the foil 9. A fan assembly 3 is provided on the box body 1 and connected to the inside of the box body 1. The air flotation guide rollers 2 and the air nozzles 4 are both connected to the fan assembly 3. The fan assembly 3 is used to provide high-temperature hot air to the air flotation guide rollers 2 and the air nozzles 4 respectively to dry the foil 9. The double-sided coated foil 9 to be dried enters the chamber 1 through the feed inlet 11. The foil 9 sequentially travels around each air-bearing guide roller 2 and is then output from the discharge outlet 12. The air-bearing guide rollers 2 guide the foil 9, and the foil 9 is turned by the air-bearing guide rollers 2 to form a folded conveyor belt. Air nozzles 4 are provided on both the front and back sides of the foil 9, and the air nozzles 4 on both sides dry both sides of the foil 9. The folded conveyor belt drying oven of this application designs the foil 9 to be conveyed by a folded conveyor belt. Compared with the traditional flat conveyor belt, it can make full use of the space inside the chamber 1, effectively shorten the length of the drying oven, reduce the space occupied by the equipment, and can dry both sides of the foil 9 simultaneously, effectively improving the drying efficiency. The conveyor belt of the foil 9 inside the chamber 1 uses air-bearing guide rollers 2 to achieve non-contact suspended conveyor belt movement, effectively reducing the possibility of defects such as dark marks, curling edges, and cracks in the foil 9.

[0026] The air-floating guide roller 2 is used to guide and turn the foil 9. In use, the fan assembly 3 introduces high-pressure, high-temperature hot air into the air-floating guide roller 2. The gas is discharged from the roller surface of the air-floating guide roller 2, so that the foil 9 is suspended around the air-floating guide roller 2 without contacting the air-floating guide roller 2. The hot air output from the roller surface can dry the foil 9.

[0027] Reference Figure 2 and Figure 3In some embodiments, the air flotation guide roller 2 includes a first air flotation roller 21 and a second air flotation roller 22. The two first air flotation rollers 21 are respectively disposed near the feed inlet 11 and near the discharge outlet 12. The foil 9 passes through the first air flotation roller 21 disposed near the feed inlet 11 to guide and turn the foil 9 entering the housing 1 from the feed inlet 11; the first air flotation roller 21 disposed at the discharge outlet 12 is used to guide and turn the foil 9 so that the foil 9 is output from the discharge outlet 12. A plurality of second air flotation rollers 22 are disposed between the two first air flotation rollers 21, and the plurality of second air flotation guide rollers 2 are arranged alternately vertically. The foil 9 enters the housing 1 through the feed inlet 11, first travels around the first air flotation roller 21, the first air flotation roller 21 guides the foil 9 to change direction, then travels around the second air flotation roller 22 located below, the second air flotation roller 22 changes direction, then the foil 9 travels around the second air flotation roller 22 located above and changes direction again, the foil 9 travels around the second air flotation roller 22 arranged vertically and vertically to change direction and fold multiple times, and then travels around the first guide roller located at the discharge outlet 12 and is output from the discharge outlet 12.

[0028] In some embodiments, a partition 221 is provided in the middle of the second air-bearing roller 22, dividing the internal cavity of the second air-bearing roller 22 into a first inner cavity 222 and a second inner cavity 223, which are respectively connected to the fan assembly 3. The fan assembly 3 supplies air to the first inner cavity 222 and the second inner cavity 223 respectively. In use, the buoyancy on both sides of the second air-bearing roller 22 can be changed by changing the air pressure and air volume of the first inner cavity 222 and the second inner cavity 223, thereby realizing the correction of deviation during the transmission process in the housing 1, so as to ensure the stability and accuracy of the belt conveyor during the long belt conveyor journey in the housing 1.

[0029] Reference Figures 1 to 3 Furthermore, the blower assembly 3 includes a high-pressure blower 31, which is located at the top of the housing 1. Both ends of the second air-bearing roller 22 are connected to the high-pressure blower 31, meaning the high-pressure blower 31 is connected to the first inner cavity 222 and the second inner cavity 223 respectively, to provide high-pressure airflow to the first inner cavity 222 and the second inner cavity 223 respectively. In this embodiment, the air intake of each air-bearing guide roller 2 is achieved by supplying air from the high-pressure blower 31 into the main air duct of the plant, and then transmitting the air to each air-bearing guide roller via the main air duct.

[0030] In some embodiments, the first air-bearing roller 21 is used to rotate the foil 9 by 90°, such as a 90° air-bearing roller, so that the foil 9, which enters the housing 1 horizontally from the feed inlet 11, can be carried vertically downwards, and the foil 9, which is folded and carried within the housing 1, can be output horizontally from the discharge outlet 12. The second air-bearing roller 22 is used to rotate the foil 9 by 180°, such as a 180° air-bearing roller, so that the foil 9 can be rotated 90° by the first air-bearing roller 21 and 180° by the second air-bearing roller 22 within the housing 1. That is, the foil 9 surface between the first air-bearing roller 21 and the adjacent second air-bearing roller 22 is parallel to the foil 9 surface between the adjacent second air-bearing roller 22, and the foil 9 surface at the feed inlet 11 is parallel to the foil 9 surface at the discharge outlet 12, so that the foil 9 is always in a horizontal or vertical state during the folding and carrying process, which facilitates the drying of the foil 9.

[0031] In this embodiment, three second air flotation rollers 22 are arranged between the two first air flotation rollers 21. The three second air flotation rollers 22 are alternately arranged between the two first air flotation rollers 21. The specific process of the foil 9 in the box 1 is as follows: the foil 9 enters the box 1 from the feed port 11 and turns 90° around the first air flotation roller 21 located on the side of the feed port 11, so that the foil 9 moves vertically downward. Then it turns 180° around the second air flotation roller 22 located below, at which time the foil 9 moves vertically upward. Until it turns 180° again around the second air flotation roller 22 located above, so that the foil 9 moves vertically downward again. When it turns around the other second air flotation roller 22 located below, it moves vertically upward again. Until it turns around the first air flotation roller 21 near the discharge port 12, it turns into a straight movement and is output from the discharge port 12.

[0032] Air nozzles 4 are installed between two adjacent air flotation guide rollers 2, with the two adjacent air nozzles 4 staggered vertically. The air nozzles 4 are used to deliver hot air to dry both sides of the foil 9. Specifically, the air nozzles 4 include single-sided air nozzles 41 and double-sided air nozzles 42. The single-sided air nozzle 41 is a single-sided air outlet, and the double-sided air nozzle 42 is an air outlet that can outlet air from both opposite sides. The single-sided air nozzle 41 is located between the first air flotation roller 21 and the adjacent second air flotation roller 22, that is, the single-sided air nozzle 41 is located on both sides of the conveyor belt inside the housing 1, and the air outlet of the single-sided air nozzle 41 faces the foil 9. The double-sided air nozzle 42 is located between each of two adjacent second air flotation rollers 22, and is used to dry the foil 9 film surface on both sides of the double-sided air nozzle 42. The air outlets on both sides of the double-sided air nozzle 42 face the foil 9 film surface located on both sides of it.

[0033] In this embodiment, all air nozzles 4 are vertically arranged, blowing hot air horizontally onto the film surface. Because the film surface forms a vertically folded conveyor belt under the guidance of the first air flotation roller 21 and the second air flotation roller 22, the air outlet surface of the air nozzles 4 is parallel to the foil 9 surface, ensuring that the airflow received by all parts of the foil 9 film surface is consistent, which is beneficial for uniformly drying the foil 9 surface. Furthermore, the vertical arrangement of the air nozzles 4 makes installation and disassembly more convenient, reducing the difficulty of equipment installation.

[0034] In other embodiments, the film surface of the foil 9 can also be set to an inclined state during the conveyor belt process. Correspondingly, each air nozzle 4 should also be set at an inclined state so that the air nozzle 4 and the film surface always remain parallel to each other, so as to ensure uniform drying of the film surface.

[0035] The fan assembly 3 also includes a circulating fan 32, which is located at the top of the housing 1 and is used to supply air to each nozzle 4. The circulating fan 32 and each nozzle 4 can be connected by ducts or the like, and there is no specific limitation here. In this embodiment, an insert-type circulating fan 32 is used to supply air to each nozzle 4.

[0036] The fan assembly 3 also includes conventional structures such as heating packs. The heating packs are connected to the air inlet terminals of the circulating fan 32 and the high-pressure fan 31, respectively, to heat and filter the air supplied to the circulating fan 32 and the high-pressure fan 31. That is, the air intake of the high-pressure fan 31 and the circulating fan 32 is high-temperature hot air heated and filtered by the heating packs. The high-temperature hot air is pressurized into high-pressure hot air after passing through the high-pressure fan 31, and then the high-pressure hot air is delivered to each air-bearing guide roller 2. The high-temperature hot air is delivered to each air nozzle 4 via the circulating fan 32, so that each air nozzle 4 outputs high-temperature hot air to blow hot air and dry the foil 9.

[0037] In this embodiment, the circulating fan 32, high-pressure fan 31, etc. are integrated and installed on the top of the box 1. Compared with the traditional oven with two-layer support frame space, this makes full use of the top space of the box 1, eliminates the second-layer platform, and effectively reduces the space occupied by the equipment in the vertical direction.

[0038] Furthermore, a heating assembly 5 is also provided inside the housing 1. Specifically, a heating assembly 5 is provided between the first air flotation roller 21 and its adjacent second air flotation roller 22, as well as between each adjacent second air flotation roller 22. The multiple heating assemblies 5 are located on both sides of the conveyor belt path to heat the front and back surfaces of the foil 9 respectively, thereby drying the foil 9. The heating assembly 5 can be of the form of infrared tube heating, infrared plate heating, laser heating, etc., and is not limited to a single type.

[0039] In this embodiment, the heating component 5 is vertically arranged, that is, the effective heating surface of the heating component 5 is parallel to the film surface of the foil 9, so as to ensure uniform heating of the film surface of the foil 9. In addition, heating components 5 are provided on both sides of the conveyor belt path to heat and dry both sides of the foil 9, further ensuring the uniformity of heating.

[0040] Furthermore, the chamber 1 is equipped with double doors 13 on both the front and rear sides along the axial direction of the air-bearing guide roller 2. The double doors 13 on both the front and rear sides facilitate cleaning and maintenance of the interior of the chamber 1, and also facilitate the installation and disassembly of various structures, which helps to reduce the difficulty of maintenance. The double doors 13 are equipped with transparent observation windows 131 to observe the conveyor belt movement and drying process inside the chamber 1 in real time.

[0041] Based on the above-described folded conveyor drying oven, this application also provides:

[0042] A double-sided coating production line, referring to Figure 4 The system includes a folding conveyor drying oven with the structure described above, and further includes an unwinding mechanism 6, a coating mechanism 7, and a winding mechanism 8 arranged sequentially. The unwinding mechanism 6 is used to unwind the foil 9 to be coated; the coating mechanism 7 is used to coat the foil 9 on both sides; at least one folding conveyor drying oven is provided between the coating mechanism 7 and the winding mechanism 8 to dry the coated foil 9; the number of folding conveyor drying ovens can be set according to the needs of the production line; the winding mechanism 8 is used to wind up the dried coated foil 9.

[0043] In this embodiment, the winding mechanism 8 includes a correction component 81, a traction component 82, and a winding component 83, wherein the correction component is used to correct the belt travel.

[0044] The working process of the double-sided coating production line is as follows:

[0045] When the equipment is working, the foil 9 is conveyed from the unwinding mechanism 6 to the coating mechanism 7 via roller conveyor. The coating mechanism 7 coats both sides of the foil 9. Then, it is conveyed to the folding conveyor drying oven by two air flotation rollers behind the coating mechanism 7 for drying. The air flotation rollers after the coating machine can prevent the foil 9 from shaking before entering the drying oven. The foil 9 is folded and conveyed in the box 1. The air flotation guide roller 2, the air nozzle 4 blow hot air and the heating component 5 dry the foil 9. Then, it is horizontally output from the box 1. The dried foil 9 enters the correction component 81. After correction, it is wound up by the traction component 82 and then wound up by the winding component 83.

[0046] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A folding conveyor drying oven, characterized in that: The device includes a housing, multiple air flotation guide rollers, and air nozzles. The housing has an inlet and an outlet on opposite sides. The multiple air flotation guide rollers are arranged parallel to the bottom surface of the housing on the side wall of the housing, and are staggered vertically. An air nozzle is provided between two adjacent air flotation guide rollers to deliver hot air. A fan assembly connected to the inside of the housing is provided on the housing. The fan assembly is connected to the air flotation guide rollers and the air nozzles respectively to provide high-temperature hot air to the air flotation guide rollers and the air nozzles respectively.

2. The folding conveyor drying oven according to claim 1, characterized in that: The air flotation guide roller includes a first air flotation roller and a second air flotation roller. The two first air flotation rollers are respectively disposed near the feed inlet and near the discharge outlet. A plurality of second air flotation rollers are disposed between the two first air flotation rollers. A partition is disposed in the middle of the second air flotation roller, and the partition divides the internal cavity of the second air flotation roller into a first inner cavity and a second inner cavity.

3. A folding conveyor drying oven according to claim 2, characterized in that: The fan assembly includes a high-pressure fan, which is disposed on the top of the housing and is connected to the first inner cavity and the second inner cavity respectively, for providing high-pressure airflow to the first inner cavity and the second inner cavity respectively.

4. A folding conveyor drying oven according to claim 2, characterized in that: The first air-bearing roller is used to rotate the foil by 90°, and the second air-bearing roller is used to rotate the foil by 180°.

5. A folding conveyor drying oven according to claim 2, characterized in that: The fan assembly further includes a circulating fan, and the air nozzles include single-sided air nozzles and double-sided air nozzles. The single-sided air nozzles are disposed between the first air flotation roller and an adjacent second air flotation roller, and the double-sided air nozzles are disposed between two adjacent second air flotation rollers. The circulating fan is disposed on the top of the housing and is used to supply air to each of the single-sided air nozzles and double-sided air nozzles respectively.

6. A folding conveyor drying oven according to claim 2, characterized in that: Heating components are provided between the first air flotation roller and the adjacent second air flotation roller, as well as between each adjacent second air flotation roller. The plurality of heating components are located on both sides of the conveyor belt path, and the heating components are used to dry the foil.

7. A folding conveyor drying oven according to claim 2, characterized in that: The foil surface between the first air flotation roller and the adjacent second air flotation roller is parallel to the foil surface between the adjacent second air flotation rollers.

8. A folding conveyor drying oven according to claim 1, characterized in that: The housing is provided with double doors on both the front and rear sides along the axial direction of the air flotation guide roller, and each double door is provided with a transparent observation window.

9. A double-sided coating production line, characterized in that: The folding conveyor drying oven as described in any one of claims 1-8 further includes an unwinding mechanism, a coating mechanism, and a winding mechanism arranged in sequence, wherein the coating mechanism is used to coat the foil on both sides, and at least one section of the folding conveyor drying oven is disposed between the coating mechanism and the winding mechanism for drying the foil.

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