Online baking equipment and system

Abstract

The embodiment of the utility model provides online baking equipment and system. The online baking equipment comprises a mounting base and at least two heating modules. The heating module comprises a baking piece. The baking pieces are arranged on the mounting base at intervals in the first direction. When the baking pieces move to the first baking position relative to the mounting base, the heating faces of the baking pieces jointly define a heating plane, and the heating plane is parallel to the plane where the to-be-rolled to-be-baked piece is located. When the baking parts move to the second baking position relative to the mounting base, the heating surfaces of all the baking parts jointly define a heating cambered surface, the heating cambered surface is matched with the roller surface of the winding roller, and the winding roller is constructed to wind the to-be-baked part. According to the online baking equipment provided by the embodiment of the invention, the situation that the to-be-baked piece has seersucker can be improved, and meanwhile, compared with an offline baking process of the to-be-baked piece, the production efficiency and production benefits of the to-be-baked piece are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating equipment, in particular to an online baking equipment and system. BACKGROUND

[0002] The rapid development of China's new energy lithium battery industry has promoted the development and innovation of upstream raw material copper foil enterprises. As the current collector and active material carrier of the negative electrode of lithium batteries, copper foil is one of the important materials for the production of new energy lithium batteries.

[0003] Bubble yarn refers to the bulging or uneven phenomenon similar to "bubble yarn" on the surface of copper foil during production or application, which is prone to occur during copper foil production. The main reasons for the generation of bubble yarn on copper foil are:

[0004] (1) Production process problem: improper composition ratio in the electrolyte, resulting in uneven deposition on the surface of the copper foil, forming bubble yarn; the size of the current density affects the deposition rate and microstructure of the copper foil, resulting in excessive heat and gas on the surface of the copper foil, forming bubble yarn; the temperature is too high or too low during production, affecting the deposition effect and microstructure of the copper foil, resulting in bubble yarn.

[0005] (2) Internal stress and surface tension: excessive or uneven distribution of internal stress, and excessive or insufficient surface tension during the formation of copper foil, which may cause bubble yarn on the copper foil.

[0006] Bubble yarn is essentially uneven grain size of copper foil, and bubble yarn can reduce the quality of copper foil and affect the product quality of lithium battery pole pieces. Bubble yarn problem can be improved, but cannot be avoided.

[0007] In the prior art, the copper grain tends to be uniform and the stress is reduced by offline heat treatment of the copper foil to improve the bubble yarn problem of the copper foil, but the offline heat treatment method is low in efficiency, and the internal and external parts are prone to uneven heating after the copper foil is wound and then heat treated, which is prone to stress.

[0008] Therefore, the present application provides an online baking equipment and system for effectively improving the problem of bubble yarn on the copper foil by online heat treatment of the copper foil. The online baking equipment and system of the present application is not only suitable for heat treatment of copper foil, but also suitable for other metals, alloys and high polymer materials. CONTENT OF THE INVENTION

[0009] The online baking equipment and system provided by the embodiments of the present application can effectively improve the situation that the to-be-baked piece has bubble yarn, and at the same time, compared with the offline baking process of the to-be-baked piece, the production efficiency and production benefit of the to-be-baked piece are greatly improved.

[0010] In a first aspect, embodiments of the present application provide an online baking apparatus, comprising:

[0011] a mounting base;

[0012] a baking device comprising at least two heating modules, each heating module comprising a baking piece, each baking piece being arranged in a first direction on the mounting base and having a heating surface away from the mounting base, and each baking piece being movable relative to the mounting base to a first baking position and a second baking position, the first direction being parallel to a width direction of the mounting base;

[0013] wherein when each baking piece is moved to the first baking position, the heating surfaces of the baking pieces together form a heating plane parallel to a plane on which a to-be-baked piece to be wound is arranged;

[0014] and when each baking piece is moved to the second baking position, the heating surfaces of the baking pieces together form a heating curved surface matching a roller surface of a winding roller.

[0015] In some embodiments, the mounting base has an arc-shaped groove recessed towards an interior of the mounting base at a top end of the mounting base;

[0016] each baking piece is arranged in the first direction in the arc-shaped groove.

[0017] In some embodiments, the heating module comprises:

[0018] a telescopic piece mounted in the arc-shaped groove and capable of being telescopically extended and retracted towards a center of a circle in which the arc-shaped groove is arranged;

[0019] a support frame mounted at an end of the telescopic piece away from the mounting base in a telescopic direction and capable of supporting a non-heating surface of the baking piece, the non-heating surface and the heating surface being two opposite surfaces of the baking piece in a thickness direction;

[0020] the support frame is capable of swinging relative to the telescopic piece to drive the baking piece to move relative to the mounting base, and the baking piece is configured to be capable of being moved to at least the first baking position or the second baking position under the drive of the support frame.

[0021] In some embodiments, the support frame comprises two support arms mounted at the end of the telescopic piece away from the mounting base in the telescopic direction and located on both sides of the telescopic piece in a direction perpendicular to the telescopic direction and capable of supporting two opposite sides of the non-heating surface.

[0022] the support arms are capable of swinging relative to the telescopic piece and capable of driving the baking piece to move relative to the mounting base when swinging.

[0023] In some embodiments, an included angle between the two support arms is fixed, and the two support arms are capable of swinging synchronously relative to the telescopic piece.

[0024] In some embodiments, the heating module further comprises a rotating shaft, the rotating shaft is installed at one end of the telescopic member away from the mounting base in the telescopic direction, and the rotating shaft is perpendicular to the telescopic direction of the telescopic member in the axial direction.

[0025] The two support arms are installed at two sides of the rotating shaft and can swing relative to the rotating shaft.

[0026] In some embodiments, the support arm is a telescopic arm, and one end of the support arm away from the telescopic member is fixed relative to the baking member.

[0027] In some embodiments, the baking member is a strip-shaped heating plate, the length direction of the strip-shaped heating plate is parallel to the second direction, and the second direction is parallel to the length direction of the mounting base.

[0028] In some embodiments, the online baking apparatus further comprises a detection unit, the detection unit comprises a first detection member and / or a second detection member, the first detection member is configured to monitor the surface temperature of the to-be-baked member;

[0029] The second detection member is configured to monitor the distance between the heating surface and the to-be-baked member.

[0030] In a second aspect, the embodiments of the present application further provide an online baking system, the online baking system comprises a transition roller, a winding roller and the online baking apparatus according to any one of the above;

[0031] The winding roller is configured to wind the to-be-baked member passing through the transition roller;

[0032] When the online baking apparatus is arranged between the winding roller and the transition roller, the baking member in the online baking apparatus is located at the first baking position.

[0033] When the online baking apparatus is arranged below the winding roller, the baking member in the online baking apparatus is located at the second baking position.

[0034] The embodiment of the present application provides an online baking equipment and system, and the online baking equipment comprises at least two heating modules. The heating module comprises a baking piece. When the baking piece moves to the second baking position, the heating arc surface formed by each baking piece can be located below the winding roller, and the baking piece can heat the to-be-baked piece to be wound in an online manner when the winding roller winds. Through the online baking of the to-be-baked piece by the baking piece, the uniformity of the surface temperature of the to-be-baked piece in the circumferential direction of the winding roller can be ensured, so that the crystal grains of the to-be-baked piece to be wound can be recrystallized, thereby controlling the size of the crystal grains deposited at each point of the to-be-baked piece to be as consistent as possible, improving the situation that bubbles appear on the surface of the to-be-baked piece such as a copper foil, and improving the performance and quality of the to-be-baked piece. Meanwhile, with the continuous heating of the to-be-baked piece to be wound by the baking piece at the second baking position, the uniformity of the heating of the inside and outside of the to-be-baked piece to be wound can be ensured, so as to reduce the stress generated by the to-be-baked piece as much as possible, make the stress distribution more uniform, and improve the quality of the to-be-baked piece. Moreover, the online baking of the to-be-baked piece by the baking piece does not have additional baking time, and the production efficiency and production benefit of the to-be-baked piece can be greatly improved. In addition, since the baking piece can move to the first baking position, the baking piece can also be moved to other positions, and each baking piece can heat the to-be-baked piece in an online manner through the heating plane formed by the baking piece. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0036] Figure 1 is a structural schematic diagram of an online baking system provided by the embodiment of the present application;

[0037] Figure 2 is a structural schematic diagram of an online baking system provided by the embodiment of the present application when the baking piece is located at the first baking position;

[0038] Figure 3 is a structural schematic diagram of an online baking system provided by the embodiment of the present application when the baking piece is located at the second baking position Figure 1 ;

[0039] Figure 4 is a structural schematic diagram of an online baking system provided by the embodiment of the present application when the baking piece is located at the second baking position Figure 2 ;

[0040] Figure 5 is a structural schematic diagram of an online baking equipment provided by the embodiment of the present application;

[0041] Figure 6 is Figure 5 is an enlarged view of the baking piece at A;

[0042] Figure 7 is a structural schematic diagram of a heating module provided by an embodiment of the present application;

[0043] Figure 8 is Figure 7 is a structural schematic diagram of a support frame and a telescopic piece;

[0044] Figure 9 is a structural schematic diagram of a telescopic piece provided by an embodiment of the present application;

[0045] Figure 10 is a structural schematic diagram of another heating module provided by an embodiment of the present application Figure 1 ;

[0046] Figure 11 is a structural schematic diagram of another heating module provided by an embodiment of the present application Figure 2 ;

[0047] Figure 12 is a flow schematic diagram of a use method of an online baking equipment provided by an embodiment of the present application;

[0048] Figure 13 is a flow schematic diagram of a control method of a surface temperature of a baking piece provided by an embodiment of the present application;

[0049] Figure 14 is a flow schematic diagram of another control method of a surface temperature of a baking piece provided by an embodiment of the present application.

[0050] Reference signs:

[0051] 100 - online baking equipment;

[0052] 10 - mounting seat; 11 - arc-shaped slot;

[0053] 20 - heating module; 21 - baking piece; 211 - heating surface; 212 - non-heating surface; 213 - heating plate; 214 - heat insulation plate; 215 - shell; 22 - telescopic piece; 221 - electromagnetic detent slot; 23 - support frame; 231 - support arm; 24 - rotating shaft;

[0054] 30 - moving wheel;

[0055] 40 - detection unit;

[0056] 200 - transition roller;

[0057] 300 - winding roller;

[0058] 400 - piece to be heated. DETAILED DESCRIPTION

[0059] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0060] As described in the background, copper foil as the current collector and active material carrier of the negative electrode of a lithium battery is one of the important materials for the production of new energy lithium batteries. The quality of the copper foil directly affects the production process and comprehensive performance of the lithium battery. For example, when bubble yarn appears on the surface of the copper foil as the current collector of the negative electrode of the lithium battery, the quality of the copper foil is reduced, which affects the production of the pole piece of the lithium battery or the product quality of the pole piece.

[0061] Therefore, in order to avoid the influence of the copper foil on the production process and comprehensive performance of the lithium battery, higher requirements are put forward for the quality of the copper foil.

[0062] The copper foil is mainly divided into electrolytic copper foil and rolled copper foil, and bubble yarn is one of the common problems in the copper foil industry. Therefore, it is necessary to improve the situation of bubble yarn appearing on the copper foil as much as possible to improve the quality of the copper foil.

[0063] In order to improve the situation of bubble yarn appearing on the copper foil, the present inventors have studied the reasons for the appearance of bubble yarn on the copper foil during the electrolytic production process. It is found that the main reasons for the appearance of bubble yarn on the copper foil during the electrolytic production process can include the following two points:

[0064] (1) Production process problem: improper composition ratio in the electrolyte, leading to uneven deposition on the surface of the copper foil and forming bubble yarn; the size of the current density affects the deposition rate and microstructure of the copper foil, leading to excessive heat and gas on the surface of the copper foil and forming bubble yarn; the temperature is too high or too low during the production process, affecting the deposition effect and microstructure of the copper foil, leading to the generation of bubble yarn.

[0065] (2) Internal stress and surface tension: excessive or uneven distribution of internal stress, and excessive or too small surface tension during the formation of the copper foil, which may lead to the generation of bubble yarn on the copper foil.

[0066] In view of the production problem of bubble yarn, researchers can usually rely on adjusting the flow of each liquid inlet of the foil machine to enhance the uniformity of the grain size of the copper foil produced by the foil machine to improve the situation of bubble yarn appearing on the surface of the copper foil.

[0067] Although the researchers can improve the situation of the copper foil surface appearing bubble silk by the above means, the situation of the copper foil surface appearing bubble silk cannot be avoided.

[0068] In the prior art, the bubble silk problem of the copper foil is usually improved by offline heat treatment of the copper foil to make the copper grains tend to be uniform and reduce stress, but the offline heat treatment has low efficiency, and the internal and external parts of the copper foil are prone to uneven heating after being wound and heat treated, and stress is prone to be generated.

[0069] Therefore, embodiments of the present application provide an online baking system and an online baking system device. The online baking system includes a transition roller, a winding roller, and an online baking device. The winding roller is configured to wind the to-be-baked piece passing through the transition roller. Specifically, along the moving direction of the to-be-baked piece in the online baking system, the transition roller can be located at the front end of the winding roller to ensure that the to-be-baked piece passing through the transition roller can be wound by the winding roller. The online baking device is provided with a baking device including at least two baking pieces. The to-be-baked piece can be baked online by each baking piece to bake the to-be-baked piece, so that the grains of the to-be-baked piece can be recrystallized, thereby controlling the size of the grains deposited at each point of the to-be-baked piece to be as consistent as possible, improving the situation of the to-be-baked piece appearing bubble silk, and reducing the bubble silk of the to-be-baked piece. Meanwhile, compared with the offline baking process of the to-be-baked piece, the online baking device provided by the embodiments of the present application not only ensures the uniformity of the internal and external parts of the to-be-baked piece being heated, avoids the to-be-baked piece generating stress, but also greatly improves the production efficiency and production benefit of the to-be-baked piece.

[0070] It should be noted that the offline baking process will be compared and described below in combination with the structure of the online baking device, which will not be described here.

[0071] The online baking device and system of the present application are not only suitable for the heat treatment of copper foil, but also suitable for other metals, alloys, and high molecular materials. The copper foil, other metals, alloys, and high molecular materials mentioned in the present application can be understood as to-be-baked pieces.

[0072] In the following, the structure of the online baking device will be further described by taking the to-be-baked piece as copper foil as an example.

[0073] Figure 1 A structure schematic diagram of an online baking system is shown.

[0074] Referring to Figure 1 As shown, the online baking device 100 includes a mounting seat 10. The mounting seat 10 can be mounted on other structures in the online baking device 100 through a mounting platform.

[0075] Referring to Figure 1As shown, the online baking apparatus 100 further comprises baking devices. The baking devices can comprise at least two heating modules 20. The heating module 20 comprises a baking piece 21. Each baking piece 21 can be spaced apart from the mounting base 10 along a first direction, and a heating surface 211 of the baking piece 21 is away from the mounting base 10. The first direction can be parallel to a width direction of the mounting base 10. The width direction of the mounting base 10 can be referred to as the X direction.

[0076] Figure 2 A structure schematic diagram of an online baking system when the baking piece 21 is located at the first baking position is shown. Figure 3 and Figure 4 Structure schematic diagrams of an online baking system in different states when the baking piece 21 is located at the second baking position are shown. Among them, Figure 3 It can be understood as a structure schematic diagram of an online baking system when the to-be-baked piece 400 is in the middle state of winding. Figure 4 It can be understood as a structure schematic diagram of an online baking system when the to-be-baked piece 400 is in the winding state.

[0077] Referring to Figure 2 to Figure 4 As shown, the baking piece 21 is movable relative to the mounting base 10 and has a first baking position and a second baking position. That is, the baking piece 21 is movable relative to the mounting base 10, and the baking piece 21 has a first baking position and a second baking position when it is moved.

[0078] Referring to Figure 2 As shown, when the baking piece 21 is moved to the first baking position, the heating surfaces 211 of the baking pieces 21 can collectively form a heating plane. The heating plane is parallel to the plane in which the to-be-wound to-be-baked piece 400 is located. The heating plane can include but is not limited to a horizontal plane parallel to the bearing platform of the mounting base 10. For example, when the plane in which the to-be-wound to-be-baked piece 400 is located is inclined relative to the bearing platform, the heating plane can also be an inclined plane inclined relative to the bearing platform. Among them, the bearing platform can be a platform with a large plane and capable of bearing the mounting base 10, such as the ground.

[0079] Hereinafter, the structure of the online baking apparatus 100 will be further described taking the heating plane as a horizontal plane as an example.

[0080] Referring to Figure 3 and Figure 4 As shown, when the baking piece 21 is moved to the second baking position, the heating surfaces 211 of the baking pieces 21 can collectively form a heating arc surface. The heating arc surface matches the roll surface of the winding roller 300, so that the shape of the heating arc surface matches the shape of the roll surface of the winding roller 300. The winding roller 300 is configured to wind the to-be-baked piece 400.

[0081] Therefore, when the heating arc surface matches the roll surface of the winding roller 300, the baking area of the baking device on the to-be-baked piece 400 being wound can be increased, and the distance between the heating arc surface and the roll surface of the winding roller 300 in each area can be ensured to be equal, so that the to-be-baked piece 21 can better bake the to-be-baked piece 400 being wound at the second baking position, the surface temperature uniformity of the to-be-baked piece 400 in the circumferential direction of the winding roller 300 is ensured, the crystal grains of the to-be-baked piece 400 can be recrystallized under the baking of each baking piece 21, the consistency of the sizes of the crystal grains deposited at each point of the to-be-baked piece 400 is enhanced, the bubble condition of the to-be-baked piece 400 can be further improved, the bubble of the to-be-baked piece 400 is further reduced, and the quality of the to-be-baked piece 400 is improved.

[0082] It should be noted that the "the shape of A matches the shape of B" mentioned in the present application can be understood as the shape of A being the same as or similar to the shape of B. For example, "the shape of the heating arc surface matches the shape of the roll surface of the winding roller 300" can be understood as the shape of the heating arc surface matching the shape of the roll surface of the winding roller 300 being the same or similar. The same understanding can be made for similar descriptions below.

[0083] The offline baking process refers to that the whole to-be-baked piece 400 after winding is placed in an oven for baking. Since there is a certain temperature difference between the core and the outer side of the whole to-be-baked piece 400, the temperature of the core and the outer surface of the to-be-baked piece 400 is not uniform, therefore, in order to ensure that the surface temperature of the core and the outer side of the whole to-be-baked piece 400 is relatively uniform, the surface temperature needs to be set relatively high, and the baking time is generally long. It should be understood that the core of the to-be-baked piece 400 can be understood as the inside of the to-be-baked piece 400, and the outer side of the to-be-baked piece 400 can be understood as the outside of the to-be-baked piece 400.

[0084] In contrast, in the embodiment of the present application, the online baking equipment 100 can also perform online baking on the to-be-baked piece 400 while the to-be-baked piece 400 is being wound by the winding roller 300 when the baking piece 21 moves to the second baking position. With the continuous heating of the baking piece 21 on the to-be-baked piece 400 being wound at the second baking position, the uniformity of the heating of the inside and outside of the to-be-baked piece 400 being wound can be ensured, so as to minimize the stress generated by the to-be-baked piece 400, make the stress distribution more uniform, and improve the quality of the to-be-baked piece 400.

[0085] Therefore, the embodiment of the present application performs online baking on the to-be-baked piece 400 by the baking piece 21 at the second baking position, so that the to-be-baked piece 400 being wound does not have the case that the core and the outer side of the to-be-baked piece 400 after winding have non-uniform surface temperatures, thereby avoiding the case that the performance of the to-be-baked piece 400 is different due to the non-uniform heating of the core and the tail of the to-be-baked piece 400 during offline baking of the to-be-baked piece 400, and improving the quality of the to-be-baked piece 400.

[0086] And, since the online baking equipment 100 of the embodiment of the application can realize online baking of the to-be-baked piece 400, avoiding the case that the core temperature of the to-be-baked piece 400 is not uniform with the outer surface temperature after winding and offline baking, the temperature of the baking piece 21 of the application can be set lower, and the whole winding process of the to-be-baked piece 400 is carried out at the same time, without additional baking time, which can greatly improve the production efficiency and production benefit of the to-be-baked piece 400.

[0087] In addition, since the baking piece 21 can move to the first baking position, when necessary, the baking piece 21 can also be moved to other positions to carry out online baking on the to-be-baked piece 400 that has not reached the winding roller 300 through the heating plane. Through the movement of the baking piece 21 at the first baking position and the second baking position, online baking can be carried out on the whole winding process of the to-be-baked piece 400 to further improve the quality of the to-be-baked piece 400.

[0088] It should be noted that the whole winding process of the to-be-baked piece 400 includes the to-be-wound process of the to-be-baked piece 400 and the winding process. The to-be-wound process of the to-be-baked piece 400 can be understood as the process of the to-be-baked piece 400 passing through the transition roller 200 and waiting to be wound by the winding roller 300. The winding process of the to-be-baked piece 400 can be understood as the process of the to-be-baked piece 400 being wound by the winding roller 300.

[0089] Referring to Figure 2 When the online baking equipment 100 is arranged below the winding roller 300, the baking piece 21 in the online baking equipment 100 can be located at the second baking position, so that the to-be-baked piece 400 being wound can be baked by each baking piece 21 at the same time.

[0090] Referring to Figure 3 When the online baking equipment 100 is arranged below the winding roller 300, the baking piece 21 in the online baking equipment 100 can be located at the second baking position, so that the to-be-baked piece 400 being wound can be baked by each baking piece 21 at the same time.

[0091] It should be noted that below the winding roller 300 is taken as an example in the direction shown in Figure 4 in order to describe the position of the online baking equipment 100 relative to the winding roller 300. When the online baking equipment 100 is arranged below the winding roller 300, the heating arc surface surrounded by the heating surface 211 of each baking piece 21 can form a concentric circle with the roller surface of the winding roller 300.

[0092] Referring to Figure 2 to Figure 4As shown, in some embodiments, the online baking equipment 100 may further include casters 30. The number of casters 30 may be multiple. Multiple casters 30 may be mounted at different positions on the bottom end of the mounting base 10 to facilitate movement of the online baking equipment 100 relative to the take-up roller 300.

[0093] It should be noted that the movement of the mounting base 10 is not limited to using the caster wheels 30. For example, the online baking equipment 100 may also include a track, and the mounting base 10 may be mounted on the track, which also enables the online baking equipment 100 to move relative to the take-up roller 300.

[0094] See Figure 3 and Figure 4 As shown, in some embodiments, the online baking device 100 may be fixed below the take-up roller 300 to bake the workpiece 400 on the take-up roller 300 by the baking element 21.

[0095] Alternatively, after the take-up roller 300 has been winding for a period of time, and the thickness of the workpiece 400 to be baked on the take-up roller 300 reaches a preset value, the online baking device 100 can move below the take-up roller 300 so that the workpiece 400 being wound can be baked by the baking device 21. See Figure 2 As shown, when necessary, in the initial stage of production of the workpiece 400 to be baked, the online baking equipment 100 can first move between the transition roller 200 and the winding roller 300 so as to bake the workpiece 400 to be wound up by the baking workpiece 21.

[0096] It should be noted that the preset value of the winding thickness is related to factors such as the distance between the roller surface of the winding roller 300 and the workpiece 21 to be baked, the thickness of the workpiece 400 to be baked, and the radius of the winding roller 300. In application, the preset value can be adjusted accordingly based on these factors. In this application, no further limitation is made on this. For example, when the adjustable range of the distance between the workpiece 400 to be baked and the heating surface 211 is 10-50cm, the sum of the preset values ​​of the radius of the winding roller 300 and the winding thickness can be 15-25cm. The structure of the online baking system equipment will be further described below with reference to the accompanying drawings.

[0097] See Figure 2 to Figure 4 As shown, in some embodiments, the number of heating modules 20 in the baking apparatus can be two, three, four, five, six, eight, ten, twelve, etc. Each baking component 21 is not connected to the others, so that each baking component 21 can be independent of the others, allowing each baking component 21 to move relative to the mounting base 10 to either the first baking position or the second baking position. Furthermore, if a baking component 21 is damaged, it can be replaced independently without replacing the entire assembly.

[0098] Figure 5A structural schematic diagram of an online baking apparatus 100 is shown.

[0099] Referring to Figure 5 As shown, in some embodiments, the baking piece 21 is a strip-shaped heating plate. The length direction of the strip-shaped heating plate can be parallel to the second direction, and the second direction is parallel to the length direction of the mounting base 10. The length direction of the mounting base 10 can be referred to as the Y direction.

[0100] By arranging the strip-shaped heating plate, the baking area of the baking device for the to-be-baked piece 400 in the second direction is increased to ensure the uniformity of the surface temperature of the to-be-baked piece 400 in the second direction, so that the crystal grains of the to-be-baked piece 400 can be subjected to secondary crystallization under the baking of each baking piece 21, thereby further enhancing the consistency of the grain size of the deposited crystal grains at each point of the to-be-baked piece 400, and the occurrence of bubble yarn on the surface of the copper foil can be further improved.

[0101] The size of each baking piece 21 in the baking device can be equal or unequal. Compared with the unequal size of each baking piece 21, when the size of each baking piece 21 is equal, the position arrangement of each baking piece 21 on the mounting base 10 can be simplified to ensure that when the baking piece 21 moves to the second baking position, the heating surfaces 211 of each baking piece 21 can jointly form a heating curved surface.

[0102] Referring to Figure 5 As shown, the size of the baking piece 21 can include a width a and a length b. Taking the baking device including eight baking pieces 21 as an example, the width a of the baking piece 21 can include but is not limited to 3.2 cm, and the length b can include but is not limited to 1650 cm.

[0103] It should be noted that when the width of the to-be-baked piece 400 changes, the length b of the baking piece 21 can also be changed to make the length b of the baking piece 21 equal to the width of the to-be-baked piece 400. The direction in which the width of the to-be-baked piece 400 is located is parallel to the length b of the baking piece 21, which can be understood as the width of the to-be-baked piece 400.

[0104] Figure 6 An enlarged view of the baking piece 21 at A in Figure 5 is shown.

[0105] Referring to Figure 6 As shown, the baking piece 21 can include an outer shell 215, a heat insulation plate 214, and a heating plate 213 arranged in sequence in the thickness direction. The side of the heating plate 213 away from the heat insulation plate 214 can form the heating surface 211 of the baking piece 21. The side of the outer shell 215 away from the heat insulation plate 214 can form the non-heating surface 212 of the baking piece 21.

[0106] In some embodiments, the heating plate 213 can adopt a graphene heating plate. Compared with a non-graphene heating plate, the graphene heating plate has high electric-thermal conversion efficiency, long service life, and high heating precision, and is more suitable for online baking of the copper foil and other baking objects 400.

[0107] In some embodiments, the heat insulation plate 214 can adopt a high polymer heat insulation plate 214.

[0108] In some embodiments, the shell 215 can adopt a heat-resistant and anti-static high polymer shell 215, so as to avoid safety hazards in a dry heating environment and enhance the safety performance of the online baking equipment 100.

[0109] Referring to Figure 4 In some embodiments, the top end of the mounting seat 10 can have an arc-shaped groove 11 recessed towards the inside of the mounting seat 10. The baking objects 21 can be arranged in the arc-shaped groove 11 in a first direction.

[0110] Through the arrangement of the arc-shaped groove 11, the height of the mounting seat 10 can be reasonably utilized to mount the baking objects 21 on the mounting seat 10, and at the same time, the height of the mounting seat 10 can be reduced, so that the online baking equipment 100 can be arranged below the winding roller 300.

[0111] In some embodiments, the arc-shaped groove 11 can match the roller surface of the winding roller 300, that is, the shape of the arc-shaped groove 11 can match the shape of the roller surface of the winding roller 300. Alternatively, in some other embodiments, the arc-shaped groove 11 can not match the roller surface of the winding roller 300.

[0112] It should be noted that when the arc-shaped groove 11 can match the roller surface of the winding roller 300, the arc-shaped groove 11 can form a concentric circle with the roller surface of the winding roller 300 when the online baking equipment 100 is arranged below the winding roller 300.

[0113] It should be noted that the top end of the mounting seat 10 can be understood as the end of the mounting seat 10 away from the bearing platform in the height direction. Correspondingly, the end of the mounting seat 10 adjacent to the bearing platform in the height direction can be regarded as the bottom end of the mounting seat 10. The height direction of the mounting seat 10 can refer to the Z direction.

[0114] In some embodiments, the top end of the mounting seat 10 can not be provided with the arc-shaped groove 11. When the baking objects 21 are arranged at the top end of the mounting seat 10, the mounting height of the baking objects 21 at the top end of the mounting seat 10 can be adjusted, so that the baking objects 21 can jointly form a heating arc surface when moving to the second baking position.

[0115] Hereinafter, the structure of the online baking device 100 will be further described by taking an example that each baking piece 21 is arranged in the first direction at the arc-shaped groove 11.

[0116] Figure 7 a structural schematic diagram of the heating module 20 is shown, Figure 8 a structural schematic diagram of the heating module 20 is shown, Figure 7 a structural schematic diagram of the support frame 23 and the telescopic piece 22 is shown.

[0117] Referring to Figure 7 and Figure 8 In some embodiments, the heating module 20 can include the telescopic piece 22. The telescopic piece 22 can be installed at the arc-shaped groove 11. The telescopic piece 22 can be telescopic towards the center of the circle where the arc-shaped groove 11 is located. At this time, the telescopic direction of the telescopic piece 22 can be understood as the intersection P between the telescopic piece 22 and the arc-shaped groove 11. The line between the intersection P and the center of the circle where the arc-shaped groove 11 is located can be regarded as the telescopic direction of the telescopic piece 22. The telescopic direction of the telescopic piece 22 intersects the first direction. The telescopic direction of the telescopic piece 22 can be referred to as the W direction.

[0118] The telescopic piece 22 can be an electric telescopic rod or other rod-shaped structure capable of telescopic. The telescopic piece 22 has a fixed end and a telescopic end in the telescopic direction. In some embodiments, the fixed end can be installed at the arc-shaped groove 11 by means of clamping, fasteners, welding, etc., and is relatively fixed with the mounting seat 10. At this time, the telescopic end is located at the end of the telescopic piece 22 away from the mounting seat 10. Alternatively, in some other embodiments, the telescopic end can be installed at the arc-shaped groove 11 by means of clamping, fasteners, welding, etc., and is relatively fixed with the mounting seat 10. At this time, the fixed end is located at the end of the telescopic piece 22 away from the mounting seat 10.

[0119] Referring to Figure 7 and Figure 8 In some embodiments, the heating module 20 can further include the support frame 23. The support frame 23 can be installed at the end of the telescopic piece 22 away from the mounting seat 10 in the telescopic direction, and is supported at the non-heating surface 212 of the baking piece 21. The non-heating surface 212 and the heating surface 211 are two opposite surfaces of the baking piece 21 in the thickness direction. The installation of the baking piece 21 on the mounting seat 10 can be achieved by the support frame 23 and the telescopic piece 22.

[0120] In addition, the support frame 23 can swing relative to the telescopic piece 22 to drive the baking piece 21 to move relative to the mounting seat 10. The baking piece 21 is configured to be movable to at least the first baking position or the second baking position under the drive of the support frame 23, so as to realize the heating of the baking device to the to-be-wound baking piece 400 in the first baking position, or realize the heating of the baking device to the baking piece 400 being wound in the second baking position.

[0121] Referring toFigure 7 and combined with Figure 2 As shown in

[0122] It should be noted that when the online baking equipment 100 is arranged below the winding roller 300, the heating arc surface and the arc-shaped groove 11 and the roller surface of the winding roller 300 can form concentric circles when the baking pieces 21 are moved to the second baking position relative to the mounting base 10.

[0123] Referring to Figure 7 and combined with Figure 3 As shown in

[0124] Referring to Figure 3 and Figure 4 As shown in

[0125] It should be noted that the retraction of the telescopic piece 22 is determined according to the winding thickness of the baking piece 400 and the diameter of the winding roller 300, which is not limited in the present application.

[0126] Figure 9 is a structural schematic view of a telescopic piece 22 provided by an embodiment of the present application.

[0127] Referring toFigure 9 As shown, after the telescopic movement is completed, the length of the telescopic member 22 in the telescopic direction is fixed and will not change. For example, the telescopic member 22 can have an electromagnetic sheet that is automatically clamped in the electromagnetic clamping groove 221 of the telescopic member 22 when the telescopic member 22 is telescoped to the preset value, so that the telescopic member 22 will not be telescoped to ensure the structural stability of the telescopic member 22. The setting of the electromagnetic clamping groove 221 and the automatic clamping principle of the electromagnetic sheet in the electromagnetic clamping groove 221 can refer to the related description of the existing electric telescopic rod, which will not be described here.

[0128] Referring to Figure 7 and Figure 8 As shown, the support frame 23 can include two support arms 231. The two support arms 231 are mounted to one end of the telescopic member 22 away from the mounting base 10 in the telescopic direction, and are located on both sides of the telescopic member 22 in the vertical telescopic direction and are supported on the opposite sides of the non-heating surface 212. At this time, the support frame 23 can be regarded as a “Y” type support.

[0129] The support arm 231 can swing relative to the telescopic member 22, and when swinging, it can drive the baking member 21 to move relative to the mounting base 10, so that the baking member 21 can move to the first baking position and the second baking position.

[0130] In addition, the support of the baking member 21 by the two support arms 231 allows the baking member 21 to be mounted on the mounting base 10 by cooperation of the two support arms 231 and the telescopic member 22. At the same time, since the two support arms 231 are supported on the opposite sides of the non-heating surface 212, the support frame 23 has a good support effect on the baking member 21, and the stability of the position of the baking member 21 on the mounting base 10 is enhanced.

[0131] Referring to Figure 8 As shown, in some embodiments, the included angle between the two support arms 231 is fixed and unchangeable. That is, during the swinging of the support frame 23 relative to the telescopic member 22, the positions of the two support arms 231 are relatively fixed. The two support arms 231 can swing synchronously relative to the telescopic member 22 to drive the baking member 21 to move relative to the mounting base 10.

[0132] Referring to Figure 8As shown, the heating module 20 can further comprise a rotating shaft 24. The rotating shaft 24 can be mounted at one end of the telescopic member 22 away from the mounting base 10, and the axial direction of the rotating shaft 24 is perpendicular to the telescopic direction of the telescopic member 22. Two support arms 231 are mounted on both sides of the rotating shaft 24 and can swing relative to the rotating shaft 24. Through the arrangement of the rotating shaft 24, the installation of the two support arms 231 on the telescopic member 22 can be realized, and the support arms 231 can swing relative to the telescopic member 22. In addition, the two support arms 231 can be connected by a non-telescopic connection structure or the like, so that the support arms 231 can swing relative to the telescopic member 22, and at the same time, the two support arms 231 can also swing synchronously relative to the telescopic member 22.

[0133] Referring to Figure 2 to Figure 4 As shown, when the included angle between the two support arms 231 is fixed, the support arms 231 can be telescopic arms. The two support arms 231 can be telescoped synchronously, and one end of the support arm 231 away from the telescopic member 22 is fixed relative to the baking member 21, so as to realize the stable support of the support arm 231 to the baking member 21, and at the same time, the distance between the baking member 21 and the baking member 400 can be adjusted by the telescoping of the two support arms 231, so as to ensure that the heating surfaces 211 of the baking members 21 can enclose a heating plane, and each baking member 21 can be located at the first baking position.

[0134] Specifically, since the baking member 21 located in the middle region of the arc-shaped groove 11 is far away from the slot of the arc-shaped groove 11, the two support arms 231 of the support frame 23 located in the middle region of the arc-shaped groove 11 can have a larger extension length, and the two support arms 231 of the support frame 23 located in the edge region of the arc-shaped groove 11 can have a smaller extension length, so that the heating surfaces 211 of the baking members 21 can enclose a heating plane, and each baking member 21 can be moved to the first baking position.

[0135] If the extension length of the two support arms 231 of the support frame 23 cannot meet the requirement that the heating surface 211 of the baking member 21 to be supported and the heating surfaces 211 of the remaining baking members 21 enclose a heating plane, the telescoping of the telescopic member 22 can be adjusted to ensure that each baking member 21 can be moved to the first baking position.

[0136] When the baking members 21 are located at the second baking position, the telescopic members 22 are all telescoped towards the center of the circle where the arc-shaped groove 11 is located, and each telescopic member 22 has the same length, and the support arms 231 of each support frame 23 also have the same length, so that the heating surfaces 211 of the baking members 21 can collectively enclose a heating arc surface, and each baking member 21 can be moved to the second baking position.

[0137] Since the two support arms 231 of the support frame 23 can be synchronously telescoped, and the two support arms 231 are supported on the opposite sides of the non-heating surface 212 of the baking piece 21, the two support arms 231 can form an isosceles triangle with the baking piece 21, so as to ensure that the formed heating plane and heating arc surface are not uneven, and further ensure the consistency of the distance between the heating surface 211 of each baking piece 21 and the to-be-baked piece 400, and ensure the uniformity of the surface temperature of the to-be-baked piece 400.

[0138] Referring to Figure 10 and Figure 11 , in some embodiments, another heating module 20 is also provided. Figure 10 and Figure 11 respectively show the structure schematic diagrams of another heating module 20 before and after moving.

[0139] Different from the above-mentioned heating module 20 (see Figure 7 and Figure 8 ), Figure 10 and Figure 11 , the included angle between the two support arms 231 of the heating module 20 can be changed, that is, the positions of the two support arms 231 can be relatively moved in the process of the support frame 23 swinging relative to the telescoping piece 22. Moreover, the two support arms 231 can not be synchronously swung relative to the telescoping piece 22, that is, the swinging angles of the two support arms 231 relative to the telescoping piece 22 can be different. At this time, the support arm 231 can also slide relative to the baking piece 21 when swinging relative to the telescoping piece 22. In this way, the baking piece 21 can also be driven to move relative to the mounting base 10 at least under the driving of the support frame 23, so that the baking piece 21 can be moved to the first baking position or the second baking position.

[0140] Compared with the heating module 20 shown in Figure 10 and Figure 11 , referring to Figure 7 and Figure 8 , when the positions of the two support arms 231 are relatively fixed and the two support arms 231 are synchronously swung relative to the telescoping piece 22, the two support arms 231 do not relatively rotate, which can facilitate better control of the movement of the baking piece 21, and can also simplify the installation of the support arm 231 on the baking piece 21.

[0141] Referring to Figure 3 and Figure 4 , when the baking piece 21 moves to the second baking position, the heating arc surface has a distance from the roller surface of the winding roller 300.

[0142] The surface temperature of the to-be-baked piece 400 can be different during the baking process. If real-time temperature detection is not performed, the to-be-baked piece 400 can be unevenly heat-treated, which can affect the improvement effect of the bubble silk of the to-be-baked piece 400.

[0143] Referring to Figure 6 As shown in the drawings, in some embodiments, the online baking equipment 100 can further include a detection unit 40. The detection unit 40 can include a first detection piece. The first detection piece is configured to monitor the surface temperature of the to-be-baked piece 400.

[0144] Through the setting of the first detection piece, the surface temperature of the to-be-baked piece 400 can be obtained in real time, so that the online baking equipment 100 can adjust the heating temperature of the baking piece 21 or the distance between the to-be-baked piece 400 and the heating surface 211 according to the detection result of the first detection piece, so that the surface temperature of the to-be-baked piece 400 matches the preset heating temperature of the baking piece 21. The surface temperature of the to-be-baked piece 400 is in a controllable range during the baking process, avoiding the situation that the surface temperature of the to-be-baked piece 400 is uneven during the baking process, further enhancing the consistency of the grain size deposited at each point of the to-be-baked piece 400, and further improving the condition of the bubble silk of the to-be-baked piece 400.

[0145] The heating temperature of the baking piece 21 can be 30-100°C.

[0146] The surface temperature of the to-be-baked piece 400 matches the preset heating temperature of the baking piece 21, which can be understood as that the surface temperature of the to-be-baked piece 400 is the same as the preset heating temperature of the baking piece 21, or that the surface temperature of the to-be-baked piece 400 can change within a small temperature control range compared to the preset heating temperature of the baking piece 21. The surface temperature of the to-be-baked piece 400 is close to the preset heating temperature of the baking piece 21. For example, the small temperature control range refers to ±0.3°C. When the surface temperature of the to-be-baked piece 400 can change within a small temperature control range, the consistency of the surface temperature of the to-be-baked piece 400 during the baking process and the consistency of the grain size deposited at each point of the to-be-baked piece 400 will not be affected.

[0147] It should be noted that the distance between the to-be-baked piece 400 and the heating surface 211 can be adjusted by the telescopic piece 22. For example, the adjustable range of the distance between the to-be-baked piece 400 and the heating surface 211 can be 10-50 cm.

[0148] In some embodiments, the detection unit 40 can further include a second detection piece. The second detection piece is configured to monitor the distance between the heating surface 211 and the to-be-baked piece 400.

[0149] Through the arrangement of the second detection member, the distance between the to-be-baked member 400 and the heating surface 211 can be obtained in real time, so that the online baking equipment 100 can accurately control the extension amount of the telescopic member 22 according to the detection result of the second detection member, so that the surface temperature of the to-be-baked member 400 is the same as the preset heating temperature of the baking member 21.

[0150] The first detection member can be an infrared temperature sensor or other sensor capable of measuring temperature. The second detection member can be an infrared distance measuring sensor or other sensor capable of measuring distance.

[0151] The first detection member and the second detection member can be integrated into one detection member, or can be two independent detection members.

[0152] Referring to Figure 6 In some embodiments, the detection unit 40 can be arranged on the heating plate 213 of the baking member 21, or, on the premise that the detection function of the detection unit 40 can be realized, the detection unit 40 can also be arranged at other positions of the online baking equipment 100.

[0153] The detection unit 40 can be multiple. One or at least two detection units 40 can be arranged on the same baking member 21. The at least two detection units 40 can be arranged at intervals along the length direction of the baking member 21. The online baking equipment 100 can average the detection results of the at least two detection units 40, which can enhance the accuracy of the detection results, so as to accurately control the surface temperature of the to-be-baked member 400. For example, the online baking equipment 100 can average the surface temperatures of the to-be-baked member 400 monitored by each first detection member, and determine the average value as the surface temperature of the to-be-baked member 400.

[0154] Hereinafter, the use method of the online baking equipment 100 will be further described by taking the example that the online baking equipment 100 is first located between the transition roller 200 and the winding roller 300, and then moves to the lower side of the winding roller 300. Figure 12 It is a flowchart of a use method of the online baking equipment 100 provided by the embodiment of the present application.

[0155] Referring to Figure 12 As shown in the figure, the use method of the online baking equipment 100 includes:

[0156] Step S1: The preset heating temperature of the baking member 21 and the distance between the baking member 21 and the to-be-baked member 400 are preset on the online baking equipment 100.

[0157] Step S2: Move the online baking equipment 100 to the transition roller 200 and the winding roller 300.

[0158] Step S3: When the winding thickness of the to-be-baked piece 400 on the winding roller 300 reaches the preset value, the online baking equipment 100 is moved to below the winding roller 300.

[0159] It should be noted that, when the online baking equipment 100 is only used below the winding roller 300,

[0160] In step S2, the online baking equipment 100 can control the swing of the support frame 23 and the extension and retraction of at least part of the telescopic piece 22 to move each baking piece 21 to the first baking position. Meanwhile, according to the monitoring results of the first detection piece and the second detection piece, the heating temperature of the baking piece 21 or the distance between the baking piece 21 and the to-be-baked piece 400 can be adjusted to make the surface temperature of the to-be-baked piece 400 monitored by the first detection piece match the above-mentioned preset heating temperature.

[0161] In step S2, the first detection piece monitors the surface temperature of the to-be-baked piece 400 in real time, and the second detection piece also monitors the distance between the heating surface 211 and the to-be-baked piece 400 in real time.

[0162] Figure 13 A flowchart of a control method for the surface temperature of a to-be-baked piece 400 is shown.

[0163] Referring to Figure 13 As shown in step S2, if the first detection piece monitors that the surface temperature of the to-be-baked piece 400 is lower than the controllable range, step S21 or step S22 can be used for adjustment to ensure that the surface temperature of the to-be-baked piece 400 during the baking process is within the controllable range, so that the surface of the to-be-baked piece 400 is basically in a constant temperature state, and the surface temperature of the to-be-baked piece 400 has good consistency, thereby avoiding the situation that the surface temperature of the to-be-baked piece 400 is not uniform during the baking process, further enhancing the consistency of the grain size deposited at each point of the to-be-baked piece 400, and further improving the situation of the to-be-baked piece 400.

[0164] In step S2, for the above-mentioned step S21: when the distance between the to-be-baked piece 400 and the heating surface 211 is unchanged, the online baking equipment 100 increases the heating temperature of the baking piece 21 to compensate for the temperature of the to-be-baked piece 400 until the first detection piece monitors that the surface temperature of the to-be-baked piece 400 is within the controllable range.

[0165] In this way, the surface temperature of the to-be-baked piece 400 can be matched with the preset heating temperature of the baking piece 21. The controllable range is formed when the preset heating temperature of the baking piece 21 fluctuates within the temperature control range. The temperature control range can be ±0.3°C. The minimum threshold of the controllable range can be the preset heating temperature of the baking piece 21 minus 0.3°C, and the maximum threshold of the controllable range can be the preset heating temperature of the baking piece 21 plus 0.3°C. For example, when the preset heating temperature of the baking piece 21 is 60°C, if the average value of the surface temperature of the to-be-baked piece 400 monitored by the first detection piece is lower than 60°C, the heating temperature of the baking piece 21 can be increased in step S21, so that the surface temperature of the to-be-baked piece 400 monitored by the first detection piece reaches 60°C or within the temperature control range (±0.3°C), and the range value of 59.7-60.3°C can be regarded as the controllable range.

[0166] In step S2, for the above-mentioned step S22: when the heating temperature of the baking piece 21 is unchanged, the online baking equipment 100 controls the telescopic piece 22 to extend to reduce the distance between the to-be-baked piece 400 and the heating surface 211, until the surface temperature of the to-be-baked piece 400 monitored by the first detection piece is within the controllable range, and the telescopic piece 22 stops telescoping.

[0167] In this way, when the surface temperature of the to-be-baked piece 400 monitored by the first detection piece is lower than the controllable range in step S2, the temperature of the to-be-baked piece 400 can also be compensated by step S22, so that the surface temperature of the to-be-baked piece 400 is within the controllable range and matched with the preset heating temperature of the baking piece 21.

[0168] Figure 14 A flowchart illustrating another control method of the surface temperature of the to-be-baked piece 400 is shown.

[0169] Referring to Figure 14 As shown, if the surface temperature of the to-be-baked piece 400 monitored by the first detection piece exceeds the controllable range in step S2, step S23 or step S24 can be used for adjustment to ensure that the surface temperature of the to-be-baked piece 400 is within the controllable range during the baking process, so that the surface of the to-be-baked piece 400 is basically in a constant temperature state, and the surface temperature of the to-be-baked piece 400 has good consistency, so as to avoid the situation that the surface temperature of the to-be-baked piece 400 is not uniform during the baking process, and further enhance the consistency of the grain size deposited at each point of the to-be-baked piece 400, so that the bubble yarn condition of the to-be-baked piece 400 can be further improved.

[0170] In step S2, for the above-mentioned step S23: when the distance between the to-be-baked piece 400 and the heating surface 211 remains unchanged, the online baking equipment 100 reduces the heating temperature of the baking piece 21 until the first detection piece monitors that the surface temperature of the to-be-baked piece 400 is within the controllable range. In this way, the surface temperature of the to-be-baked piece 400 can also be matched with the preset heating temperature of the baking piece 21.

[0171] In step S2, for the above-mentioned step S24: when the heating temperature of the baking piece 21 remains unchanged, the online baking equipment 100 controls the retraction of the telescopic piece 22 to increase the distance between the to-be-baked piece 400 and the heating surface 211 until the first detection piece monitors that the surface temperature of the to-be-baked piece 400 is within the controllable range, and the telescopic piece 22 stops retracting. In this way, the surface temperature of the to-be-baked piece 400 can also be matched with the preset heating temperature of the baking piece 21. For example, when the preset heating temperature of the baking piece 21 is 60°C, if the average value of the surface temperature of the to-be-baked piece 400 monitored by the first detection piece is higher than 60.3°C, the online baking equipment 100 will control the telescopic piece 22 to retract to increase the distance between the to-be-baked piece 400 and the heating surface 211.

[0172] In step S3, the first detection piece will monitor the surface temperature of the to-be-baked piece 400 in real time, and the second detection piece will also monitor the distance between the heating surface 211 and the to-be-baked piece 400 in real time.

[0173] In step S3, if the first detection piece monitors that the surface of the to-be-baked piece 400 is lower than the controllable range, the adjustment can also be made through step S21 or step S22 to ensure that the surface temperature of the to-be-baked piece 400 is within the controllable range during the baking process, so that the surface of the to-be-baked piece 400 is basically in a constant temperature state, and the surface temperature of the to-be-baked piece 400 has good consistency.

[0174] It should be noted that in step S3, the adjustment method of step S21 or step S22 can refer to the related description in step S2 above, which will not be repeated here.

[0175] In step S3, if the first detection piece monitors that the surface of the to-be-baked piece 400 is higher than the controllable range, the adjustment can also be made through step S23 or step S24 to ensure that the surface temperature of the to-be-baked piece 400 is within the controllable range during the baking process. In this way, it can be avoided that the surface temperature of the to-be-baked piece 400 is not uniform during the baking process, and the consistency of the grain size deposited at each point of the to-be-baked piece 400 is further enhanced, so that the bubble yarn condition of the to-be-baked piece 400 can be further improved.

[0176] It should be noted that in step S3, the adjustment method of step S23 or step S24 can refer to the related description in step S2 above, which will not be repeated here.

[0177] It should be noted that in step S3, as the to-be-baked piece 400 is wound, when the second detection piece detects that the distance between the to-be-baked piece 400 and the heating surface 211 is less than the preset distance, the online baking device 100 controls the telescopic piece 22 to retract, so as to increase the distance between the to-be-baked piece 400 and the heating surface 211, and also enable the surface temperature of the to-be-baked piece 400 to match the preset heating temperature of the baking piece 21, until the to-be-baked piece 400 is wound to the required length.

[0178] In some embodiments, taking the adjustable range of the distance between the to-be-baked piece 400 and the heating surface 211 as 10-50 cm with eight baking pieces 21, the online baking device 100 of the embodiments of the present application can be used for, but is not limited to, the online baking of a to-be-baked piece 400 of a conventional copper foil with a winding length of less than 60,000 meters and a thickness of 6-20 microns.

[0179] The online baking device 100 of the embodiments of the present application can ensure the consistency of the heating of the to-be-baked piece 400, effectively improve the bubble silk of the to-be-baked piece 400, avoid the situation that the performance of the to-be-baked piece 400 is different due to offline baking in the past, improve the quality of the to-be-baked piece 400, and the online baking device 100 also has the characteristics of high heating precision, long service life, and adjustable heating temperature of the to-be-baked piece 400, which has the significance of improving efficiency and reducing cost for the production of the to-be-baked piece 400.

[0180] It should be noted that in the case that the heating surface of the to-be-baked piece 400 requires less, one or part of the baking pieces 21 in the online baking device 100 can also heat the to-be-baked piece 400.

[0181] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0182] In the description of the present application, it should be understood that the terms “include” and “have” and any variations thereof used herein are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product or device including a series of steps or units need not be limited to those clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0183] The term "and / or" used in the present application only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0184] Unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0185] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An in-line baking apparatus, characterized by, The online baking device comprises: a mounting base; a baking device comprising at least two heating modules, each of the heating modules comprising a baking piece, each of the baking pieces being arranged in a first direction on the mounting base and having a heating surface away from the mounting base, and each of the baking pieces being movable relative to the mounting base between a first baking position and a second baking position, wherein the first direction is parallel to a width direction of the mounting base; wherein, when the baking pieces are moved to the first baking position, the heating surfaces of the baking pieces together form a heating plane parallel to a plane on which a to-be-baked piece to be wound is arranged; when the baking pieces are moved to the second baking position, the heating surfaces of the baking pieces together form a heating curved surface matching a roller surface of a winding roller.

2. The in-line toasting apparatus of claim 1, wherein, The mounting base has an arc-shaped groove recessed towards the inside of the mounting base at a top end of the mounting base; each of the baking pieces is arranged in the first direction on the arc-shaped groove.

3. An in-line toasting apparatus as claimed in claim 2, characterized in that The heating module comprises: a telescopic piece arranged on the arc-shaped groove and capable of being telescopically extended and retracted towards a center of a circle on which the arc-shaped groove is arranged; a support frame arranged on one end of the telescopic piece away from the mounting base in a telescopic direction and capable of supporting a non-heating surface of the baking piece, wherein the non-heating surface and the heating surface are two opposite surfaces of the baking piece in a thickness direction, and the support frame is capable of swinging relative to the telescopic piece to drive the baking piece to move relative to the mounting base; the baking piece is configured to be capable of being moved to the first baking position or the second baking position at least under the drive of the support frame.

4. An in-line toasting apparatus as claimed in claim 3, characterized in that The support frame comprises two support arms arranged on one end of the telescopic piece away from the mounting base in the telescopic direction and located on both sides of the telescopic piece in a direction perpendicular to the telescopic direction and capable of supporting two opposite sides of the non-heating surface; the support arms are capable of swinging relative to the telescopic piece and capable of driving the baking piece to move relative to the mounting base when swinging.

5. An in-line baking apparatus according to claim 4, characterised in that, The angle between the two support arms is fixed, and the two support arms are capable of swinging synchronously relative to the telescopic piece.

6. An in-line toasting apparatus as claimed in claim 5, characterized in that The heating module further comprises a rotating shaft arranged on one end of the telescopic piece away from the mounting base in the telescopic direction and having an axial direction perpendicular to the telescopic direction of the telescopic piece; the two support arms are arranged on both sides of the rotating shaft and are capable of swinging relative to the rotating shaft.

7. The in-line toasting apparatus of claim 5, wherein, The support arms are telescopic arms, and one end of each of the support arms away from the telescopic piece is fixed relative to the baking piece.

8. An in-line baking apparatus according to any one of claims 1-7, characterized in that, The baking piece is a strip-shaped heating plate, and a length direction of the strip-shaped heating plate is parallel to a second direction, and the second direction is parallel to a length direction of the mounting base.

9. An in-line baking apparatus according to any one of claims 1-7, characterized in that, The online baking device further comprises a detection unit comprising a first detection piece and / or a second detection piece, wherein the first detection piece is configured to monitor a surface temperature of the to-be-baked piece, and the second detection piece is configured to monitor a distance between the heating surface and the to-be-baked piece. The online baking device comprises a transition roller, a winding roller and the online baking device according to any one of claims 1-9; 10. An in-line baking system characterized by, the winding roller is configured to wind the to-be-baked piece passing through the transition roller; ​ When the online baking apparatus is arranged between the winding roller and the transition roller, the baking member in the online baking apparatus is located at the first baking position; When the online baking apparatus is arranged below the winding roller, the baking member in the online baking apparatus is located at the second baking position.

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