Roller hearth type annealing furnace for copper strip annealing

Abstract

The utility model relates to the technical field of annealing furnaces, and provides a roller hearth type annealing furnace for copper strip annealing, which comprises a furnace body, a high-temperature heating area, a first low-temperature preheating area, a second low-temperature preheating area, an oil cylinder, a partition plate, a first furnace door, a second furnace door and a movable track, the first low-temperature preheating area, the high-temperature heating area and the second low-temperature preheating area are sequentially arranged in the furnace body, through preheating treatment of the two low-temperature preheating areas, the copper strip can gradually adapt to the high-temperature environment, generation of thermal stress is reduced, and therefore the risk of deformation or cracking of the copper strip is reduced. Meanwhile, the temperature distribution of the copper strip can be more uniform through preheating, and the surface quality and performance after annealing are improved; due to the fact that the copper strip is preheated to a certain degree before entering the high-temperature heating area, the required high-temperature heating time is greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to annealing furnace technical field, concretely relates to a roller bottom type annealing furnace for copper strip annealing. BACKGROUND

[0002] In the copper strip annealing process, the traditional annealing furnace design often only contains a high-temperature heating zone, and the copper strip directly enters the high-temperature zone for rapid heating to achieve the purpose of annealing. However, this design has some problems. First, since the copper strip directly enters the high-temperature environment from room temperature, it is easy to produce a large thermal stress, which causes the copper strip to deform or crack, affecting the annealing quality. Secondly, the high-temperature heating zone needs to consume a large amount of energy to heat the copper strip to the required annealing temperature, which not only increases the production cost, but also may cause energy waste. In view of this, the present application is proposed. SUMMARY

[0003] The present application proposes a roller bottom type annealing furnace for copper strip annealing to solve the technical problems in the prior art that the annealing furnace design often only contains a high-temperature heating zone, and the copper strip directly enters the high-temperature environment from room temperature, which is easy to produce a large thermal stress, causing the copper strip to deform or crack, affecting the annealing quality. Secondly, the high-temperature heating zone needs to consume a large amount of energy to heat the copper strip to the required annealing temperature, which not only increases the production cost, but also may cause energy waste. The above technical purpose of the utility model is realized by the following technical scheme:

[0004] A roller bottom type annealing furnace for copper strip annealing, comprising a furnace body, a high-temperature heating zone, a first low-temperature preheating zone, a second low-temperature preheating zone, an oil cylinder, a partition, a first furnace door, a second furnace door and a moving track, the first low-temperature preheating zone, the high-temperature heating zone and the second low-temperature preheating zone are sequentially arranged inside the furnace body, the partition is respectively arranged between the first low-temperature preheating zone and the high-temperature heating zone, the high-temperature heating zone and the second low-temperature preheating zone, the oil cylinder is arranged on the top of the furnace body, the partition and the oil cylinder are connected, the first furnace door and the second furnace door are respectively rotationally arranged on both sides of the furnace body, and the moving track is through arranged in the furnace body.

[0005] Further, the top of the furnace body is provided with a circulating fan.

[0006] Further, the top of the furnace body is provided with a support frame, and the oil cylinder is arranged on the support frame.

[0007] Further, torsional springs are arranged between the first furnace door, the second furnace door and the furnace body.

[0008] Further, the moving track comprises a circulating track and a material receiving plate, and the material receiving plate is slidingly arranged on the circulating track.

[0009] Further, the top of the material receiving tray is symmetrically provided with an L-shaped limiting plate.

[0010] Compared with the prior art, the utility model has the beneficial effects that include:

[0011] Through the preheating treatment of the two low-temperature preheating zones, the copper strip can gradually adapt to the high-temperature environment, reducing the generation of thermal stress, thereby reducing the risk of copper strip deformation or cracking. At the same time, preheating can also make the temperature distribution of the copper strip more uniform, improving the surface quality and performance after annealing; since the copper strip has undergone a certain preheating treatment before entering the high-temperature heating zone, the required high-temperature heating time will be greatly shortened. This means that the energy consumption required by the high-temperature heating zone will be reduced, thereby reducing the production cost. In addition, the low-temperature preheating zone can also serve as a heat recovery zone for the high-temperature heating zone, further improving energy utilization efficiency. The setting of the two low-temperature preheating zones can make the annealing furnace process more copper strips at the same time, thereby improving production efficiency. In addition, preheating treatment can also speed up the annealing speed of the copper strip, making the entire annealing process more efficient. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic diagram of the utility model;

[0013] Fig. 2 It is a structural schematic diagram of another perspective of the utility model;

[0014] Fig. 3 It is a structural schematic diagram of the L-shaped limiting plate of the utility model.

[0015] In the figure: 1, furnace body; 2, high-temperature heating zone; 3, first low-temperature preheating zone; 4, second low-temperature preheating zone; 5, oil cylinder; 6, partition; 7, first furnace door; 8, second furnace door; 9, circulating fan; 10, support frame; 11, circulating track; 12, material receiving tray; 13, L-shaped limiting plate. DETAILED DESCRIPTION

[0016] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the utility model, it is to be explained that, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For the ordinary skilled in the art, the above-mentioned terms can be understood in the specific meaning in the utility model according to specific circumstances.

[0018] In order to make the purpose, technical scheme and advantage of the utility model more clear and explicit, the utility model is further explained in detail below in combination with specific embodiments and referring to the drawings.It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model.In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] Please refer to the accompanying Figs. 1-3 A roller hearth annealing furnace for copper strip annealing, comprising a furnace body 1, a high-temperature heating zone 2, a first low-temperature preheating zone 3, a second low-temperature preheating zone 4, an oil cylinder 5, a partition plate 6, a first furnace door 7, a second furnace door 8 and a moving track, the first low-temperature preheating zone 3, the high-temperature heating zone 2 and the second low-temperature preheating zone 4 are sequentially arranged inside the furnace body 1, the partition plate 6 is arranged between the first low-temperature preheating zone 3 and the high-temperature heating zone 2, and between the high-temperature heating zone 2 and the second low-temperature preheating zone 4, the oil cylinder 5 is arranged at the top of the furnace body 1, the partition plate 6 is connected with the oil cylinder 5, the first furnace door 7 and the second furnace door 8 are rotatably arranged on both sides of the furnace body 1, and the moving track is arranged in the furnace body 1.

[0020] By adopting the above technical scheme, the copper strip first enters the first low-temperature preheating zone 3 through the first furnace door 7 to be preliminarily heated, so that the thermal stress that may be generated when the copper strip directly contacts the high-temperature zone can be reduced. After heating, the copper strip in the first low-temperature preheating zone 3 is pushed into the high-temperature heating zone 2 through the moving track to perform the main heating process, so as to reach the required temperature for annealing. After high-temperature heating is completed, the second furnace door 8 is opened, and the lifting partition plate 6 is lowered at the same time, so that the copper strip in the high-temperature heating zone 2 can be taken out or transferred to the next process.

[0021] The first low-temperature preheating zone 3 is the first heating stage for the copper strip after entering the annealing furnace. In this stage, the copper strip is exposed to a relatively low temperature, the purpose is to gradually raise the temperature of the copper strip, so that it gradually adapts to a higher heating environment. If the copper strip directly enters a high-temperature environment from room temperature, it may generate a large thermal stress, causing deformation or cracking. Low-temperature preheating can gradually release these stresses and improve the annealing quality of the copper strip. Through preheating, the temperature of the copper strip has already risen, which means that the heat input required in the subsequent high-temperature heating stage will be reduced. This not only reduces energy consumption, but also shortens the time required to reach the annealing temperature. The first low-temperature preheating zone 3 can act as a buffer zone to help maintain the uniformity of the temperature inside the furnace body 1. When the temperature of the high-temperature heating zone 2 fluctuates, the first low-temperature preheating zone 3 can absorb or release part of the heat, thereby slowing down the rate of temperature change. The second low-temperature preheating zone 4 can provide additional preheating for the copper strip coming out of the high-temperature heating zone 2, to ensure that the copper strip reaches the required temperature uniformity before leaving the annealing furnace. In some cases, the second low-temperature preheating zone 4 can also be used to adjust the temperature of the copper strip to meet specific annealing requirements. For example, if the temperature of the high-temperature heating zone 2 is too high, the second low-temperature preheating zone 4 can act as a cooling zone to help reduce the temperature of the copper strip.

[0022] In some embodiments, the furnace body 1 is provided with a circulating fan 9 at the top. The circulating fan 9 is located at the top of the furnace body 1, and its function is to promote the circulation of air or protective gas inside the furnace, to ensure that the temperature inside the furnace is more uniform. This helps to reduce temperature gradients and improve annealing quality. Especially in the high-temperature heating zone 2, the circulating fan 9 can effectively prevent local overheating or temperature unevenness.

[0023] In some embodiments, the furnace body 1 is provided with a support frame 10 at the top, and the oil cylinders 5 are all arranged on the support frame 10. The support frame 10 provides a stable mounting platform for the oil cylinders 5. The oil cylinders 5 realize the lifting function of the partition plate 6 through the connecting partition plate 6. When it is necessary to open the passage between the high-temperature heating zone 2 and the low-temperature preheating zone, the oil cylinders 5 drive the partition plate 6 to descend; when it is necessary to close the passage to maintain temperature isolation, the oil cylinders 5 drive the partition plate 6 to ascend. This not only ensures the convenience of operation, but also ensures the accurate control of the temperature inside the furnace.

[0024] In some embodiments, torsional springs are provided between the first furnace door 7 and the second furnace door 8 and the furnace body 1. The torsional springs provide auxiliary force for the automatic closing or opening of the furnace doors. When the furnace doors are manually opened or closed to a certain extent, the torsional springs will begin to play a role, helping the furnace doors to complete the remaining actions. This not only reduces the burden on the operators, but also ensures that the furnace doors can tightly fit the furnace body 1 when closed, preventing heat leakage and improving the energy efficiency of the furnace.

[0025] In some embodiments, the moving track includes a circulating track 11 and a receiving pallet 12, which is slidingly arranged on the circulating track 11. The circulating track 11 provides a continuous movement path for the receiving pallet 12, so that the receiving pallet 12 can move in a circulating manner within the furnace body 1. The receiving pallet 12 is used to carry the copper strip from the low-temperature preheating zone to the high-temperature heating zone 2 and then to the discharge port. Not only the conveying efficiency of the copper strip is improved, but also the stability and continuity of the copper strip during the annealing process are ensured.

[0026] In some embodiments, L-shaped limiting plates 13 are symmetrically arranged on the top of the receiving pallet 12. The L-shaped limiting plates 13 are used to prevent the copper strip from sliding or deviating during the conveying process. They are symmetrically arranged on the top of the receiving pallet 12, which can effectively limit the movement range of the copper strip and ensure that the copper strip always remains in the correct position.

[0027] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A roller hearth annealing furnace for annealing copper strips, characterized by, The application relates to a furnace body, a high-temperature heating area, a first low-temperature preheating area, a second low-temperature preheating area, an oil cylinder, a partition plate, a first furnace door, a second furnace door and a moving track, the first low-temperature preheating area, the high-temperature heating area and the second low-temperature preheating area are sequentially arranged in the furnace body, the partition plate is arranged between the first low-temperature preheating area and the high-temperature heating area, the high-temperature heating area and the second low-temperature preheating area, the oil cylinder is arranged on the top of the furnace body, the partition plate is connected with the oil cylinder, the first furnace door and the second furnace door are rotationally arranged on the two sides of the furnace body, and the moving track is arranged in the furnace body.

2. The roller hearth annealing furnace for copper strip annealing according to claim 1, characterized in that, The top of the furnace body is provided with a circulating fan.

3. The roller hearth annealing furnace for copper strip annealing according to claim 1, characterized in that, The top of the furnace body is provided with a supporting frame, and the oil cylinder is arranged on the supporting frame.

4. The roller hearth annealing furnace for copper strip annealing according to claim 1, characterized in that, Torsional springs are arranged between the first furnace door, the second furnace door and the furnace body.

5. The roller hearth annealing furnace for copper strip annealing according to claim 1, characterized in that, The moving track comprises a circulating track and a material receiving supporting plate, and the material receiving supporting plate is slidingly arranged on the circulating track.

6. The roller hearth annealing furnace for annealing copper strips according to claim 5, characterized in that, L-shaped limiting plates are symmetrically arranged on the top of the material receiving supporting plate.

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