Annealing furnace circulating system

Abstract

The utility model discloses a circulating system of an annealing furnace. The circulating system of the annealing furnace comprises a carrier, a first annealing furnace, a second annealing furnace, a first loading and unloading mechanism and a second loading and unloading mechanism, the annealing furnace circulating system is used for circularly conveying a carrier, and in one circulation, the carrier sequentially passes through the first annealing furnace, the second loading and unloading mechanism, the second annealing furnace and the first loading and unloading mechanism. The carrier completes unloading of the machined workpiece and loading of the workpiece to be machined on the first loading and unloading mechanism and then enters the second annealing furnace, the workpiece to be machined is moved to the second loading and unloading mechanism after being machined in the second annealing furnace, and the unloading process of the machined workpiece and the loading process of the workpiece to be machined are repeated. The second annealing furnace is additionally arranged on the path where the carrier is conveyed from the outside to the inlet from the outlet of the first annealing furnace for processing a new batch of workpieces, so that the no-load time of the carrier is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment equipment, in particular to an annealing furnace circulation system. Background Art

[0002] In the field of heat treatment technology, many workpieces require annealing to improve their performance. Existing annealing equipment requires a carrier. Workpieces to be processed are placed on an empty carrier and then transported to an annealing furnace for processing. The processed workpieces are removed from the annealing furnace exit, and the empty carrier is then transported back to the annealing furnace entrance. This results in a long idle time for the carrier. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an annealing furnace circulation system that can reduce the idle time of a carrier.

[0004] According to an embodiment of the present invention, the annealing furnace circulation system includes a carrier, a first annealing furnace, a second annealing furnace, a first loading and unloading mechanism, and a second loading and unloading mechanism. The carrier is used to carry a workpiece, the first annealing furnace includes a first furnace entrance and a first furnace exit, and the second annealing furnace includes a second furnace entrance and a second furnace exit. The first loading and unloading mechanism includes a first upper section and a first lower section, the first upper section is connected to the first furnace entrance, and the first lower section is connected to the second furnace exit. The second loading and unloading mechanism includes a second upper section and a second lower section, the second upper section is connected to the second furnace entrance, and the second lower section is connected to the first furnace exit. The annealing furnace circulation system is used to cyclically transport the carrier, and in one cycle, the carrier passes through the first annealing furnace, the second lower section, the second upper section, the second annealing furnace, the first lower section, and the first upper section in sequence; when the carrier is in the first lower section and the second lower section, the processed workpiece on the carrier is unloaded; when the carrier is in the first upper section and the second upper section, the workpiece to be processed is loaded onto the carrier.

[0005] According to the annealing furnace circulation system of the embodiment of the present invention, there are at least the following beneficial effects: a first annealing furnace and a second annealing furnace are provided, and the carrier carries the workpiece and moves to the first loading and unloading mechanism after processing in the first annealing furnace, completes the unloading of the processed workpiece and the loading of the workpiece to be processed in the first loading and unloading mechanism, and then enters the second annealing furnace, and the workpiece to be processed is moved to the second loading and unloading mechanism after processing in the second annealing furnace, repeats the process of unloading the processed workpiece and loading the workpiece to be processed, and adds a second annealing furnace on the path of transporting the carrier from the outlet of the first annealing furnace to the entrance from the outside to process a new batch of workpieces, thereby reducing the idle time of the carrier.

[0006] According to some embodiments of the present invention, the first loading and unloading mechanism includes a first manipulator and a first conveying assembly, the first conveying assembly includes a first upper section and a first lower section, the first conveying assembly is used to convey the carrier from the first lower section to the first upper section, the first manipulator is used to remove the processed workpiece on the carrier in the first lower section, and is used to load the workpiece to be processed onto the carrier in the first upper section. And / or, the second loading and unloading mechanism includes a second manipulator and a second conveying assembly, the second conveying assembly includes a second upper section and a second lower section, the second conveying assembly is used to convey the carrier from the second lower section to the second upper section, the second manipulator is used to remove the processed workpiece on the carrier in the second lower section, and is used to load the workpiece to be processed onto the carrier in the second upper section.

[0007] According to some embodiments of the present invention, the first annealing furnace and the second annealing furnace are distributed along the first direction, the first loading and unloading mechanism and the second loading and unloading mechanism are spaced apart along the second direction, the first lower area and the first upper area are distributed along the first direction, the second upper area and the second lower area are distributed along the first direction, and any two of the first direction, the second direction and the vertical direction are perpendicular to each other.

[0008] According to some embodiments of the present invention, the first loading and unloading mechanism includes a first conveying assembly, the first conveying assembly includes a first upper section and a first lower section, the first conveying assembly is used to convey the carrier from the first lower section to the first upper section, and the first conveying assembly is configured as a roller conveyor or a belt conveyor. And / or, the second loading and unloading mechanism includes a second conveying assembly, the second conveying assembly includes a second upper section and a second lower section, the second conveying assembly is used to convey the carrier from the second lower section to the second upper section, and the second conveying assembly is configured as a roller conveyor or a belt conveyor.

[0009] According to some embodiments of the present invention, the first annealing furnace and the second annealing furnace are distributed along the vertical direction, the first upper area and the first lower area are distributed along the vertical direction, and the second upper area and the second lower area are distributed along the vertical direction.

[0010] According to some embodiments of the present invention, the first loading and unloading mechanism includes a first bracket, a first conveying assembly, and a first lifting device, the first bracket including a first upper section and a first lower section, the first lifting device drives the first conveying assembly to rise and fall within the first bracket, thereby moving the first conveying assembly to the first upper section or the first lower section, and the first conveying assembly is used to convey the workpiece in a horizontal direction. And / or, the second loading and unloading mechanism includes a second bracket, a second conveying assembly, and a second lifting device, the second bracket including a second upper section and a second lower section, the second lifting device drives the second conveying assembly to rise and fall within the second bracket, thereby moving the second conveying assembly to the second upper section or the second lower section, and the second conveying assembly is used to convey the workpiece in a horizontal direction.

[0011] According to some embodiments of the present invention, there are at least two first annealing furnaces, and at least two second annealing furnaces, and any two of the number of first annealing furnaces, the number of second annealing furnaces, the number of first upper areas, the number of first lower areas, the number of second upper areas, and the number of second lower areas are the same.

[0012] According to some embodiments of the present invention, the first annealing furnace and the second annealing furnace are arranged alternately; or, a plurality of first annealing furnaces are arranged adjacent to each other, and a plurality of second annealing furnaces are arranged adjacent to each other.

[0013] According to some embodiments of the present invention, the first annealing furnace and the second annealing furnace have the same transportation time for the carrier, and the first loading and unloading mechanism and the second loading and unloading mechanism have the same transportation time for the carrier.

[0014] According to some embodiments of the present invention, a transport direction of the carrier by the first annealing furnace is opposite to a transport direction of the carrier by the second annealing furnace.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A top view of the annealing furnace circulation system in the first embodiment of the present invention;

[0018] Figure 2 A top view of an annealing furnace circulation system in a second embodiment of the present invention;

[0019] Figure 3 It is a front view of the annealing furnace circulation system in the third embodiment of the present utility model;

[0020] Figure 4 It is a front view of the annealing furnace circulation system in the fourth embodiment of the present invention;

[0021] Figure 5 It is a front view of the annealing furnace circulation system in the fifth embodiment of the present invention;

[0022] Figure 6 Schematic diagram of an annealing furnace circulation system in the prior art.

[0023] in, Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 as well as Figure 6 The arrow direction is the transport direction of the vehicle. Figure 2The direction of the arrow is the loading and unloading direction of the workpiece.

[0024] Figure numerals: annealing furnace circulation system 100, carrier 101, workpiece 102, first annealing furnace 103, first furnace entrance 104, first furnace outlet 105, second annealing furnace 106, second furnace entrance 107, second furnace outlet 108, first loading and unloading mechanism 109, first upper sheet area 110, first lower sheet area 111, second loading and unloading mechanism 112, second upper sheet area 113, second lower sheet area 114, first manipulator 201, first conveying assembly 202, second manipulator 203, second conveying assembly 204, first bracket 301, first lifting device 302, second bracket 303, second lifting device 304. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0030] refer to Figure 1 According to an embodiment of the present invention, the annealing furnace circulation system 100 includes a carrier 101, a first annealing furnace 103, a second annealing furnace 106, a first loading and unloading mechanism 109, and a second loading and unloading mechanism 112. The carrier 101 is used to carry the workpiece 102. The first annealing furnace 103 includes a first furnace entrance 104 and a first furnace exit 105. The second annealing furnace 106 includes a second furnace entrance 107 and a second furnace exit 108. The first loading and unloading mechanism 109 includes a first upper section 110 and a first lower section 111. The first upper section 110 is connected to the first furnace entrance 104, and the first lower section 111 is connected to the second furnace exit 108. The second loading and unloading mechanism 112 includes a second upper section 113 and a second lower section 114. The second upper section 113 is connected to the second furnace entrance 107, and the second lower section 114 is connected to the first furnace exit 105. The annealing furnace circulation system 100 is used to cyclically transport the carrier 101, and in one cycle, the carrier 101 passes through the first annealing furnace 103, the second lower area 114, the second upper area 113, the second annealing furnace 106, the first lower area 111 and the first upper area 110 in sequence; when the carrier 101 is in the first lower area 111 and the second lower area 114, the processed workpiece 102 on the carrier 101 is unloaded; when the carrier 101 is in the first upper area 110 and the second upper area 113, the workpiece 102 to be processed is loaded onto the carrier 101.

[0031] refer to Figure 6 , Figure 6This is a schematic diagram of a circulation system in the prior art, in which only the first annealing furnace 103 processes the workpiece 102. After the carrier 101 exits the first furnace outlet 105, it returns to the first furnace entrance 104 through an external conveying device to be reloaded with new workpieces 102 to be processed. During this process, the carrier 101 is in an unloaded state. The annealing furnace circulation system of the embodiment of the present invention is further provided with a second annealing furnace 106 on this unloaded path to perform heat treatment on a new batch of workpieces 102, thereby reducing the unloaded time of the carrier 101. A first annealing furnace 103 and a second annealing furnace 106 are provided in total. The carrier 101 carries the workpiece 102 and moves to the first loading and unloading mechanism 109 after processing in the first annealing furnace 103. After the first loading and unloading mechanism 109 completes the unloading of the processed workpiece 102 and the loading of the workpiece 102 to be processed, the workpiece 102 enters the second annealing furnace 106. After the workpiece 102 to be processed is processed in the second annealing furnace 106, it moves to the second loading and unloading mechanism 112 and repeats the process of unloading the processed workpiece 102 and loading the workpiece 102 to be processed. A second annealing furnace 106 is added to the path of the carrier 101 from the exit of the first annealing furnace 103 to the entrance from the outside to process a new batch of workpieces 102, which reduces the empty load situation of the carrier 101 and improves the utilization rate of the carrier 101.

[0032] It should be noted that in some embodiments of the present invention, the carrier 101 can enter and exit between the loading and unloading mechanism (i.e., the first loading and unloading mechanism 109 and the second loading and unloading mechanism 112) and the annealing furnace (i.e., the first annealing furnace 103 and the second annealing furnace 106) by setting a conveyor belt or roller in the same direction on the loading and unloading mechanism and the annealing furnace, so that the carrier 101 can naturally transition between the two devices; or by setting the first manipulator 201 or the second manipulator 203 mentioned below, so that the manipulator can grab the carrier 101 and make it enter and exit between the loading and unloading mechanism and the annealing furnace.

[0033] It should be noted that in some embodiments of the present invention, the first annealing furnace 103 and the second annealing furnace 106 use roller annealing furnaces. The roller annealing furnace has uniform heating, reduces deformation of the workpiece 102, and runs smoothly, has less vibration, and has good processing quality. At the same time, it can also make smoother contact between the first roller conveyor assembly 202 and the second conveyor assembly 204 mentioned below.

[0034] It should be noted that in some embodiments of the present invention, a preheating zone, a process zone, and a cooling zone are sequentially provided in the annealing furnace from the furnace entrance to the furnace exit. Both the preheating zone and the process zone are provided with heating devices. In the preheating zone, the workpiece 102 is heated to a suitable temperature range to reduce the stress inside the material and improve the structure, in preparation for processing in the process zone. The process zone is used to perform heat treatment processes such as annealing on the workpiece 102. In order to reduce heat loss, an insulation layer is also provided in the process zone to improve heating efficiency. After heat treatment in the process zone, the workpiece 102 enters the cooling zone. The cooling zone is provided with cooling devices such as air cooling and liquid cooling to remove heat from the workpiece 102 to stabilize its microstructure and performance.

[0035] refer to Figure 2 In some embodiments of the present invention, the first loading and unloading mechanism 109 includes a first manipulator 201 and a first conveying assembly 202, the first conveying assembly 202 includes a first upper area 110 and a first lower area 111, the first conveying assembly 202 is used to convey the carrier 101 from the first lower area 111 to the first upper area 110, the first manipulator 201 is used to remove the processed workpiece 102 on the carrier 101 in the first lower area 111, and is used to load the workpiece 102 to be processed onto the carrier 101 in the first upper area 110. And / or, the second loading and unloading mechanism 112 includes a second manipulator 203 and a second conveying assembly 204, the second conveying assembly 204 includes a second upper section 113 and a second lower section 114, the second conveying assembly 204 is used to transport the carrier 101 from the second lower section 114 to the second upper section 113, the second manipulator 203 is used to remove the processed workpiece 102 from the carrier 101 in the second lower section 114, and is used to load the workpiece 102 to be processed onto the carrier 101 in the second upper section 113. This design further improves the automation level of the system, and by using the first manipulator 201 or the second manipulator 203 to load and unload the workpiece 102, efficiency is improved.

[0036] It should be noted that the first manipulator 201 and the second manipulator 203 in the embodiment of the present invention can be clamping manipulators, adsorption suction cups or snap-on racks, and are not limited to specific forms.

[0037] It should be noted that, in some embodiments of the present invention, removing the processed workpiece 102 from the carrier 101 and loading the workpiece 102 to be processed onto the carrier 101 can also be completed manually.

[0038] refer to Figure 2In some embodiments of the present invention, the first annealing furnace 103 and the second annealing furnace 106 are arranged along a first direction, the first loading and unloading mechanism 109 and the second loading and unloading mechanism 112 are spaced apart along a second direction, the first lower section 111 and the first upper section 110 are arranged along the first direction, the second upper section 113 and the second lower section 114 are arranged along the first direction, and any two of the first direction, the second direction, and the vertical direction are perpendicular to each other. Horizontally arranging the annealing furnace circulation system 100 of the present invention embodiment can reduce the vertical space occupied and has better adaptability to flattened spaces.

[0039] refer to Figure 1 and Figure 2 In some embodiments of the present invention, the first loading and unloading mechanism 109 includes a first conveying assembly 202, which includes a first upper section 110 and a first lower section 111. The first conveying assembly 202 is used to convey the carrier 101 from the first lower section 111 to the first upper section 110. The first conveying assembly 202 is configured as a roller conveyor or a belt conveyor. And / or, the second loading and unloading mechanism 112 includes a second conveying assembly 204, which includes a second upper section 113 and a second lower section 114. The second conveying assembly 204 is used to convey the carrier 101 from the second lower section 114 to the second upper section 113. The second conveying assembly 204 is configured as a roller conveyor or a belt conveyor. The first conveyor assembly 202 and the second conveyor assembly 204 facilitate the movement of the carrier 101 from the lower area to the upper area, improving conveying efficiency. The roller conveyor and the belt conveyor provide a smoother transport of the carrier 101, reducing the shaking of the workpiece 102 during transport. It should be noted that in some embodiments of the present invention, a transmission assembly such as a guide rail conveyor may also be used.

[0040] refer to Figure 3 In some embodiments of the present invention, the first annealing furnace 103 and the second annealing furnace 106 are arranged vertically, the first upper section 110 and the first lower section 111 are arranged vertically, and the second upper section 113 and the second lower section 114 are arranged vertically. The vertical arrangement of the annealing furnace circulation system 100 of the present invention can reduce the overall floor space and improve space utilization.

[0041] It should be noted that the reference Figure 3In some embodiments of the present invention, the first annealing furnace 103 is arranged below the second annealing furnace 106, the first lifting device 302 transports the carrier 101 from top to bottom, and the second lifting device 304 transports the carrier 101 from bottom to top; or the opposite arrangement can be made, where the first annealing furnace 103 is arranged above the second annealing furnace 106, the first lifting device 302 transports the carrier 101 from bottom to top, and the second lifting device 304 transports the carrier 101 from top to bottom. When viewed from the front, the circulation path of the entire annealing furnace circulation system 100 runs clockwise or counterclockwise, and the positions of the upper area (first upper area 110 or second upper area 113) and the lower area (first lower area 111 or second lower area 114) arranged on the bottom layer are also different in different running directions. In this way, different layout methods can be selected according to different working scenarios, so that the upper area and the lower area are placed in the required positions.

[0042] refer to Figure 3 In some embodiments of the present invention, the first loading and unloading mechanism 109 includes a first bracket 301, a first conveying assembly 202, and a first lifting device 302. The first bracket 301 includes a first upper section 110 and a first lower section 111. The first lifting device 302 drives the first conveying assembly 202 to move up and down within the first bracket 301, thereby moving the first conveying assembly 202 to the first upper section 110 or the first lower section 111. The first conveying assembly 202 is used to transport the workpiece 102 horizontally. And / or, the second loading and unloading mechanism 112 includes a second bracket 303, a second conveying assembly 204, and a second lifting device 304. The second bracket 303 includes a second upper section 113 and a second lower section 114. The second lifting device 304 drives the second conveying assembly 204 to move up and down within the second bracket 303, thereby moving the second conveying assembly 204 to the second upper section 113 or the second lower section 114. The second conveying assembly 204 is used to transport the workpiece 102 horizontally. The lifting device (the first lifting device 302 and the second lifting device 304) drives the conveying assembly (the first conveying assembly 202 and the second conveying assembly 204) to lift and lower, which can effectively solve the vertical movement of the carrier 101, thereby moving it to the upper area or the lower area, and then using the horizontal conveying assembly to transport the workpiece 102 to be processed into the annealing furnace or to connect the processed workpiece 102 coming out of the annealing furnace. The cooperation between the lifting assembly and the conveying assembly enables the carrier 101 to be better circulated and transported in the vertically arranged annealing furnace circulation system 100.

[0043] It should be noted that, in some embodiments of the present invention, the first lifting device 302 and the second lifting device 304 can be lifting mechanisms such as screw lifting, scissor lift, rack and pinion lifting, piston rod lifting, etc.

[0044] refer to Figure 4 and Figure 5 In some embodiments of the present invention, there are at least two first annealing furnaces 103, and at least two second annealing furnaces 106, and any two of the number of first annealing furnaces 103, the number of second annealing furnaces 106, the number of first upper areas 110, the number of first lower areas 111, the number of second upper areas 113, and the number of second lower areas 114 are the same. Such a design can ensure that there are at least two circulation loops in the annealing furnace circulation system 100, thereby improving processing efficiency. In some embodiments of the present invention, the number of first annealing furnaces 103, the number of second annealing furnaces 106, the number of first upper areas 110, the number of first lower areas 111, the number of second upper areas 113 and the number of second lower areas 114 can be set in multiple to improve the overall processing volume, and each first annealing furnace 103 corresponds to a second annealing furnace 106, a first upper area 110, a first lower area 111, a second upper area 113 and a second lower area 114, thereby forming a circulation loop. Each circulation loop is independent of each other, making the overall structure simpler and facilitating subsequent maintenance and maintenance. If any part of the circulation loop has a problem, only maintenance needs to be performed on that loop.

[0045] refer to Figure 4 and Figure 5 In some embodiments of the present invention, the first annealing furnace 103 and the second annealing furnace 106 are alternately arranged; or, a plurality of first annealing furnaces 103 are adjacently arranged, and a plurality of second annealing furnaces 106 are adjacently arranged. Figure 4 As shown, the alternating arrangement of the first annealing furnace 103 and the second annealing furnace 106 can make the two sets of circulation loops formed finally independent of each other, which is convenient for the maintenance and upkeep of each circulation loop. The distance between the first annealing furnace 103 and the second annealing furnace 106 in the same circulation loop is also closer, which improves the transportation efficiency. Figure 5 As shown, the first annealing furnaces 103 are arranged adjacent to each other, and the second annealing furnaces 106 are arranged adjacent to each other. This design allows the same type of equipment to be placed together, and the maintenance of designated equipment can be more centralized.

[0046] It should be noted that, in some embodiments of the present invention, a single first annealing furnace 103 and multiple second annealing furnaces 106 may be provided, or a single second annealing furnace 106 and multiple first annealing furnaces 103 may be provided, and the first annealing furnace 103 and the second annealing furnace 106 are still connected using the first loading and unloading mechanism 109 and the second loading and unloading mechanism 112. The number of upper and lower areas on the loading and unloading mechanism is consistent with the number of annealing furnaces and corresponds one to one. Such a design can realize the addition of a spare annealing furnace on the basis of a single circulation loop. When the main annealing furnace fails, it can be quickly switched to the spare annealing furnace to form a new circulation loop, thereby reducing the impact of emergencies on processing efficiency.

[0047] In some embodiments of the present invention, the first annealing furnace 103 and the second annealing furnace 106 have the same time for transporting the carrier 101, and the first loading and unloading mechanism 109 and the second loading and unloading mechanism 112 have the same time for transporting the carrier 101. In this way, carriers 101 can be placed at both the first furnace entrance 104 and the second furnace entrance 107 at the same time, so that at least two sets of carriers 101 carrying workpieces 102 are processed simultaneously in the annealing furnace circulation system 100 without affecting each other, thereby further improving processing efficiency.

[0048] refer to Figure 1 and Figure 3 In some embodiments of the present invention, the first annealing furnace 103 transports the carrier 101 in a direction opposite to that of the second annealing furnace 106. This allows the first annealing furnace 103 and the second annealing furnace 106 to be connected end to end, simplifying the structure of the entire annealing furnace circulation system 100 and reducing unnecessary path design.

[0049] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. An annealing furnace circulation system, characterized in that: include: A carrier, used to carry the workpiece; a first annealing furnace, comprising a first furnace inlet and a first furnace outlet; a second annealing furnace, comprising a second furnace inlet and a second furnace outlet; a first loading and unloading mechanism, the first loading and unloading mechanism comprising a first upper section and a first lower section, the first upper section being connected to the first furnace inlet, and the first lower section being connected to the second furnace outlet; a second loading and unloading mechanism, the second loading and unloading mechanism comprising a second upper section and a second lower section, the second upper section being connected to the second furnace inlet, and the second lower section being connected to the first furnace outlet; The annealing furnace circulation system is used to cyclically transport the carrier, and in one cycle, the carrier passes through the first annealing furnace, the second lower area, the second upper area, the second annealing furnace, the first lower area and the first upper area in sequence; when the carrier is in the first lower area and the second lower area, the processed workpiece on the carrier is unloaded; when the carrier is in the first upper area and the second upper area, the workpiece to be processed is loaded onto the carrier.

2. The annealing furnace circulation system according to claim 1, characterized in that: The first loading and unloading mechanism includes a first robot and a first conveying assembly, the first conveying assembly includes the first upper section and the first lower section, the first conveying assembly is used to convey the carrier from the first lower section to the first upper section, the first robot is used to remove the processed workpiece from the carrier in the first lower section, and is used to load the workpiece to be processed onto the carrier in the first upper section; and / or, The second loading and unloading mechanism includes a second manipulator and a second conveying assembly, the second conveying assembly includes the second upper area and the second lower area, the second conveying assembly is used to convey the carrier from the second lower area to the second upper area, the second manipulator is used to remove the processed workpiece on the carrier in the second lower area, and is used to load the workpiece to be processed onto the carrier in the second upper area.

3. The annealing furnace circulation system according to claim 1, characterized in that: The first annealing furnace and the second annealing furnace are distributed along the first direction, the first loading and unloading mechanism and the second loading and unloading mechanism are spaced apart along the second direction, the first lower area and the first upper area are distributed along the first direction, the second upper area and the second lower area are distributed along the first direction, and any two of the first direction, the second direction and the vertical direction are perpendicular to each other.

4. The annealing furnace circulation system according to claim 3, characterized in that: The first loading and unloading mechanism includes a first conveying assembly, the first conveying assembly includes the first upper sheet area and the first lower sheet area, the first conveying assembly is used to convey the carrier from the first lower sheet area to the first upper sheet area, and the first conveying assembly is configured as a roller conveyor or a belt conveyor; and / or, The second loading and unloading mechanism includes a second conveying assembly, which includes the second upper area and the second lower area. The second conveying assembly is used to convey the carrier from the second lower area to the second upper area. The second conveying assembly is configured as a roller conveyor or a belt conveyor.

5. The annealing furnace circulation system according to claim 1, characterized in that: The first annealing furnace and the second annealing furnace are distributed along the vertical direction, the first upper area and the first lower area are distributed along the vertical direction, and the second upper area and the second lower area are distributed along the vertical direction.

6. The annealing furnace circulation system according to claim 5, characterized in that: The first loading and unloading mechanism includes a first bracket, a first conveying assembly, and a first lifting device. The first bracket includes a first upper plate area and a first lower plate area. The first lifting device drives the first conveying assembly to rise and fall within the first bracket, thereby moving the first conveying assembly to the first upper plate area or the first lower plate area. The first conveying assembly is used to convey the workpiece in a horizontal direction. and / or, The second loading and unloading mechanism includes a second bracket, a second conveying assembly and a second lifting device. The second bracket includes a second upper area and a second lower area. The second lifting device drives the second conveying assembly to rise and fall in the second bracket, thereby moving the second conveying assembly to the second upper area or the second lower area. The second conveying assembly is used to convey the workpiece in a horizontal direction.

7. The annealing furnace circulation system according to claim 5, characterized in that: There are at least two first annealing furnaces, and there are at least two second annealing furnaces. Any two of the number of the first annealing furnaces, the number of the second annealing furnaces, the number of the first upper areas, the number of the first lower areas, the number of the second upper areas, and the number of the second lower areas are the same.

8. The annealing furnace circulation system according to claim 7, characterized in that: The first annealing furnace and the second annealing furnace are arranged alternately; or, a plurality of the first annealing furnaces are arranged adjacent to each other, and a plurality of the second annealing furnaces are arranged adjacent to each other.

9. The annealing furnace circulation system according to claim 1, characterized in that: The first annealing furnace and the second annealing furnace have the same transportation time for the carrier, and the first loading and unloading mechanism and the second loading and unloading mechanism have the same transportation time for the carrier.

10. The annealing furnace circulation system according to claim 1, characterized in that: The first annealing furnace transports the carrier in a direction opposite to the second annealing furnace transports the carrier.

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