CN219297572U

CN219297572U - Annealing equipment

Info

Publication number: CN219297572U
Application number: CN202320224686.7U
Authority: CN
Inventors: 朱荣彦; 陈辉; 刘肇; 赵建荣; 汪沈炎; 杜浩楠
Original assignee: Jiangxi Hangdian Copper Foil Co ltd
Current assignee: Jiangxi Hangdian Copper Foil Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-07-04
Anticipated expiration: 2033-02-15

Abstract

The utility model provides annealing equipment, which comprises an oven main body, a hot air circulation mechanism, a plurality of wind-up rolls, a wind guide mechanism and a plurality of air inlets, wherein the hot air circulation mechanism is arranged in the oven main body, the wind-up rolls are uniformly arranged in the oven main body, the side walls of the wind-up rolls are provided with the plurality of air inlets in an array manner, the wind inlets penetrate through the wind-up rolls, and the wind guide mechanism is arranged at the bottom of the oven main body and is connected with the air inlets. According to the utility model, the copper foil is wound on the outer surface of the winding roller, then the hot air is injected into the hot air circulation mechanism to heat the outer surface of the copper foil wound on the winding roller, and the air guide mechanism guides the hot air to the air inlet of the winding roller so as to heat the interior of the winding roller, so that the inner surface of the copper foil can be heated uniformly, the copper foil roll can be heated uniformly, the internal stress of the copper foil roll can be released uniformly, and the annealing efficiency of the copper foil is improved.

Description

Annealing equipment

Technical Field

The utility model relates to the technical field of copper foil processing, in particular to annealing equipment.

Background

During the production of lithium electrodeposited copper foil, we have found that the copper foil properties of the copper foil, as it has just been produced, and after a period of natural aging, are different. The double-sided photo-lithium electric foil produced by the electrolytic method can automatically recrystallize under the room temperature condition, and the micro-texture/crystal characteristics of the double-sided photo-lithium electric foil are greatly changed, and the phenomenon is called Self-annealing effect. The self-annealing effect can cause the crystal phase texture, the resistivity and the mechanical property of the copper foil to be changed, and is an unavoidable phenomenon in the existing electrolytic copper foil production technology level, and the self-annealing speed is in direct proportion to the ambient temperature, namely, the higher the temperature is, the faster the self-annealing speed is. Experiments prove that the self-annealing process is basically completed by standing for about 6 to 10 days at room temperature. In practice, the "self-annealing effect" is the process of automatically releasing the internal stress of the copper foil.

In the prior art, a copper foil coil is placed in a heating mechanism (a baking furnace and a baking room), the inside of the copper foil coil is heated to 40-100 ℃, baked for more than 10 hours, then cooled slowly for eliminating the internal stress of the copper foil, and the copper foil coil is taken out after the stress of the copper foil coil is eliminated. Because the temperature in the mechanism can reach hundreds of degrees at some time, a certain amount of inert gas is needed to be filled in the mechanism to ensure that the copper foil in the mechanism is not oxidized at high temperature, but the internal stress of all the copper foil rolls cannot be released uniformly, the roll cores of the copper foil rolls are not baked thoroughly, the copper foil at the roll cores is warped greatly, and abnormal conditions such as uneven tension and scale marks are easy to occur on the surface of the copper foil.

Disclosure of Invention

Based on this, it is an object of the present utility model to provide an annealing apparatus that at least solves the above-mentioned drawbacks of the prior art.

The utility model provides the following technical scheme, an annealing device is used for annealing copper foil, and comprises:

an oven main body;

the hot air circulation mechanism is arranged in the oven main body;

the wind-up rolls are uniformly arranged in the oven main body, a plurality of air inlets are formed in the side walls of the wind-up rolls in an array manner, and the air inlets penetrate through the wind-up rolls;

the air guide mechanism is arranged at the bottom of the oven main body and is connected with the air inlet;

the wind-up roller is used for winding the copper foil, the hot air circulation mechanism is used for heating the inside of the oven body so that the outer surface of the copper foil wound on the wind-up roller is heated, and the wind guide mechanism is used for guiding hot air into the wind-up roller through the air inlet so that the inner surface of the copper foil wound on the wind-up roller is heated.

Compared with the prior art, the copper foil annealing device has the beneficial effects that the copper foil is wound on the outer surface of the winding roller, then the hot air circulation mechanism injects hot air to heat the outer surface of the copper foil wound on the winding roller, and the air guide mechanism guides the hot air to the air inlet of the winding roller so as to heat the inside of the winding roller, so that the inner surface of the copper foil can be heated uniformly, the copper foil coil can be heated uniformly, the internal stress of the copper foil coil can be released uniformly, and the annealing efficiency of the copper foil is improved.

Further, the hot air circulation mechanism comprises a hot air inlet and an air return opening, wherein the hot air inlet and the air return opening are both arranged on the side wall of the oven main body, and the air return opening is arranged above the hot air inlet.

Further, the air guide mechanism comprises a heating fan, a heat conducting pipe and a plurality of air inlet hoses, the heating fan is arranged outside the oven main body, the output end of the heating fan is connected with the heat conducting pipe, the heat conducting pipe is fixedly arranged at the bottom of the oven main body, one ends of the air inlet hoses are uniformly distributed at the top of the heat conducting pipe, and the other ends of the air inlet hoses are connected with the air inlet.

Further, the heat conduction pipe is arranged in an annular structure.

Further, a plurality of temperature control sensors are arranged in the oven main body, and a plurality of temperature control sensors are arranged at four corners of the oven main body.

Further, a supporting mechanism is arranged in the oven main body and is used for erecting a plurality of winding rollers.

Further, the supporting mechanism comprises a plurality of supporting legs and a supporting frame body, wherein the supporting legs are fixedly arranged at the bottom in the oven main body, and the supporting frame body is fixedly arranged at the top of the supporting legs so that the winding rollers are uniformly erected on the supporting frame body.

Further, the wind-up roll is provided with a supporting shaft in a penetrating manner, and two ends of the supporting shaft are erected on the supporting frame body.

Drawings

Fig. 1 is a front view of an annealing apparatus in an embodiment of the present utility model;

FIG. 2 is a top view of an annealing apparatus in an embodiment of the utility model;

fig. 3 is a schematic cross-sectional view of a wind-up roll according to an embodiment of the present utility model.

Description of main reference numerals:

the utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an annealing apparatus according to an embodiment of the utility model includes an oven body 10, a hot air circulation mechanism 20, a plurality of wind-up rolls 30, and an air guiding mechanism 40.

The hot air circulation mechanism 20 is arranged in the oven body 10, a plurality of wind-up rollers 30 are uniformly erected in the oven body 10, a plurality of air inlets 31 are formed in an array on the side wall of the wind-up rollers 30, the air inlets 31 penetrate through the wind-up rollers 30, the air guide mechanism 40 is arranged at the bottom of the oven body and is connected with the air inlets 31, the wind-up rollers 30 are used for winding copper foils, the hot air circulation mechanism 20 is used for heating the interior of the oven body 10 so that the outer surfaces of the copper foils wound on the wind-up rollers 30 are heated, and the air guide mechanism is used for guiding hot air into the wind-up rollers 30 through the air inlets so that the inner surfaces of the copper foils wound on the wind-up rollers 30 are heated.

It can be understood that the copper foil is wound on the outer circumferential surface of the wind-up roller 30, then the wind-up roller 30 wound with the copper foil is placed in the oven body 10, at this time, an external main fan is connected to the hot air circulation mechanism 20, in this embodiment, the main fan blows hot air, the hot air enters the oven body 10 through the hot air circulation mechanism 20, and the hot air enters the oven 10 from the bottom of the oven body 10, then circulates and flows out of the hot air circulation mechanism 20, after entering the oven body 10, the hot air can heat the outer surface of the copper foil, in this process, the wind-guiding mechanism 40 is started, and the wind-guiding mechanism 40 guides the hot air into the wind-up roller 30 through the wind inlet 31, so that the inner surface of the copper foil wound on the wind-up roller 30 can also be heated uniformly, and further the inner surface and the outer surface of the copper foil can be heated uniformly, so that the internal stress of the copper foil can be released uniformly, and the annealing efficiency of the copper foil is improved.

Referring to fig. 1, in the present embodiment, the hot air circulation mechanism 20 includes a hot air inlet 21 and a return air inlet 22, the hot air inlet 21 and the return air inlet 22 are both disposed on a side wall of the oven body 10, and the return air inlet 22 is disposed above the hot air inlet 21.

It should be explained that, the hot air inlet 21 may be externally connected with a main fan, in this embodiment, the main fan 21 blows hot air, the hot air enters the oven body 10 through the hot air inlet 21, and then flows out from the air return opening 22, so as to achieve the purpose of downward entering and upward returning of the hot air, thereby increasing the internal temperature of the oven body 10 through downward entering and upward returning of the hot air.

Referring to fig. 1, in the present embodiment, the air guiding mechanism 40 includes a heating fan 41, a heat conducting pipe 42 and a plurality of air inlet hoses 43, the heating fan 41 is disposed outside the oven body 10, an output end of the heating fan 41 is connected with the heat conducting pipe 42, the heat conducting pipe 42 is fixedly disposed at the bottom of the oven body 10, one ends of the plurality of air inlet hoses 43 are uniformly distributed at the top of the heat conducting pipe 42, and the other ends are connected with the air inlet 31.

It can be understood that, when the method is specifically implemented, the heating fan 41 is started, the heating fan 41 blows hot air blown by itself to the heat conducting tube 41, in this embodiment, the heat conducting tube 41 is in an annular structure, and surrounds the bottom of the oven main body 10, the hot air passes through the heat conducting tube 41 to reach the air inlet 31 of the wind-up roller 30 and passes through the wind-up roller 31, so that the temperature of the wind-up roller 30 is increased, and therefore, the copper foil wound on the surface of the wind-up roller 30 is heated uniformly, and further, the internal stress of the copper foil is released uniformly, so that the annealing efficiency is improved.

Referring to fig. 2, in the present embodiment, a plurality of temperature control sensors 50 are disposed in the oven body 10, and a plurality of temperature control sensors 50 are disposed at four corners of the oven body 10, so that the temperature condition in the oven body 10 can be effectively monitored by disposing the temperature control sensors 50.

Referring to fig. 1, in the present embodiment, a supporting mechanism 60 is disposed in the oven body 10, the supporting mechanism 60 is used for erecting a plurality of winding rollers 30, the supporting mechanism 60 includes a plurality of supporting legs 61 and a supporting frame 62, a plurality of supporting legs 61 are fixedly disposed at the bottom of the oven body 10, and the supporting frame 62 is fixedly disposed at the top of the supporting legs 61, so that a plurality of winding rollers 30 are uniformly erected on the supporting frame 62.

It can be appreciated that, since the oven body 10 is filled with hot air, the copper foil on the surface of the erected wind-up roll 30 can be heated more uniformly, and the stress point of the wind-up roll 30 can be found conveniently during transportation.

Referring to fig. 3, in this embodiment, the wind-up roller 30 is provided with a supporting shaft 32, two ends of the supporting shaft 32 are disposed on the supporting frame 62, so that the wind-up roller 30 can be conveniently and rapidly mounted on the supporting frame 62.

In summary, in the annealing device according to the above embodiment of the present utility model, the copper foil is wound on the outer surface of the wind-up roller 30, and then the hot air circulation mechanism 20 injects hot air to heat the outer surface of the copper foil wound on the wind-up roller 30, and the air guide mechanism 40 guides the hot air to the air inlet of the wind-up roller 30, so that the inside of the wind-up roller 30 is heated, and the inner surface of the copper foil is heated uniformly, so that the copper foil coil can be heated uniformly, the internal stress of the copper foil coil can be released uniformly, and the annealing efficiency of the copper foil is improved.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An annealing apparatus for annealing copper foil, comprising:

an oven main body;

the hot air circulation mechanism is arranged in the oven main body;

the wind-up roller is used for winding the copper foil, the hot air circulation mechanism is used for heating the inside of the oven main body so that the outer surface of the copper foil wound on the wind-up roller is heated, and the wind guide mechanism is used for guiding hot air into the wind-up roller through the air inlet so that the inner surface of the copper foil wound on the wind-up roller is heated.

2. The annealing apparatus according to claim 1, wherein the hot air circulation mechanism comprises a hot air inlet and a return air inlet, both of which are provided on a side wall of the oven body, and the return air inlet is provided above the hot air inlet.

3. The annealing device according to claim 1, wherein the air guiding mechanism comprises a heating fan, a heat conducting pipe and a plurality of air inlet hoses, the heating fan is arranged outside the oven main body, the output end of the heating fan is connected with the heat conducting pipe, the heat conducting pipe is fixedly arranged at the bottom of the oven main body, one ends of the air inlet hoses are uniformly distributed at the top of the heat conducting pipe, and the other ends of the air inlet hoses are connected with the air inlet.

4. An annealing apparatus according to claim 3, wherein said heat conducting tube is provided in a ring-shaped configuration.

5. Annealing equipment according to claim 1, characterized in that a plurality of temperature control sensors are arranged in the oven main body, and a plurality of temperature control sensors are arranged at four corners of the oven main body.

6. Annealing apparatus according to claim 1, wherein a support mechanism is provided in the oven body, the support mechanism being adapted to erect a plurality of the wind-up rolls.

7. The annealing apparatus of claim 6, wherein the support mechanism comprises a plurality of support legs and a support frame, the plurality of support legs are fixedly arranged at the bottom in the oven body, and the support frame is fixedly arranged at the top of the support legs, so that the plurality of wind-up rolls are uniformly arranged on the support frame.

8. The annealing equipment according to claim 7, wherein a supporting shaft is arranged on the wind-up roll in a penetrating manner, and two ends of the supporting shaft are erected on the supporting frame body.