A modular annealing furnace

Abstract

The present invention provides a modular annealing furnace, which relates to the technical field of annealing furnaces, including an annealing furnace body, a furnace door is arranged on the annealing furnace body, the annealing furnace body includes a first side plate, a second side plate, a back plate and a top plate connected to each other, the first side plate, the second side plate and the back plate are fixed on supporting feet, a walking track is arranged below the annealing furnace body, one end of the walking track extends out of the annealing furnace body, a walking trolley is arranged on the walking track, a scissor-type lifting mechanism is arranged on the walking trolley, an adjustable bottom plate is arranged on the upper end of the scissor-type lifting mechanism, the scissor-type lifting mechanism adjusts the height of the adjustable bottom plate, and the adjustable bottom plate and the annealing furnace body form annealing spaces of different sizes. The present invention can flexibly adjust the size of the annealing space according to the size and quantity of parts, can reduce unnecessary heat loss, and improve energy utilization.

Description

Technical Field

[0001] The invention mainly relates to the technical field of annealing furnaces, and in particular to a modular annealing furnace. Background Art

[0002] In the era of rapid development of industrial technology, the application of metal materials is becoming more and more extensive, and the performance requirements of metal materials are becoming higher and higher. For example, the use of aluminum is widely used in various fields, from life to transportation, aviation, etc. In order to increase the performance of aluminum, and at the same time improve or eliminate the residual stress formed in the casting, forging and other process flows, aluminum needs to be heat treated. Annealing is one of the heat treatment processes, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. It can reduce the hardness of the metal, improve the cutting process type, reduce the tendency of deformation and cracking, and eliminate residual stress and structural defects.

[0003] For example, the utility model patent with Chinese patent publication number CN207498444U discloses an annealing furnace and an aluminum annealing furnace, which annealing furnace includes a furnace body; a material passage is arranged on the side wall of the furnace body; the furnace body includes a furnace cavity and a furnace shell, the furnace shell is wrapped around the outside of the furnace cavity, and an insulation layer is arranged between the furnace shell and the furnace cavity; it also includes a heating device, a guide system and a cooling water circulation system, and the heating device, the guide system and the cooling water circulation system are arranged on the furnace body.

[0004] The heating device in the above application is used to preheat the furnace cavity, the guide system is used to introduce air into the furnace cavity, and the cooling water circulation system is used to cool the hot air after use inside the furnace cavity, which solves the technical problems such as the low overall structural comprehensiveness of the annealing furnace and the imperfect functions. However, in the annealing furnace in the prior art, the furnace space of the annealing furnace is fixed. When the number of parts to be annealed is small or the size is small, more energy is needed to heat the entire furnace space during the annealing process, and the energy utilization efficiency will be significantly reduced, resulting in energy waste. During the annealing process, heat needs to be transferred from the inside of the furnace body to the parts by heat conduction. However, when the number of parts is small or the size is small, their distribution in the furnace may be uneven, resulting in low heat transfer efficiency in some areas, which will further increase the heating time and energy consumption to ensure that all parts reach the required annealing temperature. Summary of the invention

[0005] 1. Technical problem to be solved by the invention:

[0006] The present invention provides a modular annealing furnace to solve the technical problems existing in the above-mentioned background technology.

[0007] 2. Technical solution:

[0008] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a modular annealing furnace, comprising an annealing furnace body, a furnace door is arranged on the annealing furnace body, the annealing furnace body comprises a first side panel, a second side panel, a back panel and a top panel connected to each other, the first side panel, the second side panel and the back panel are fixed on supporting feet, a walking track is arranged below the annealing furnace body, one end of the walking track extends out of the annealing furnace body, a walking trolley is arranged on the walking track, a scissor-type lifting mechanism is arranged on the walking trolley, an adjustable bottom plate is arranged on the upper end of the scissor-type lifting mechanism, the scissor-type lifting mechanism adjusts the height of the adjustable bottom plate, and the adjustable bottom plate and the annealing furnace body form annealing spaces of different sizes.

[0009] Preferably, the first side panel, the second side panel, the back panel and the top panel have the same structure, which is composed of a mounting frame and a plurality of assembly units arranged on the mounting frame, and the upper end of the adjustable bottom panel is provided with a plurality of assembly units.

[0010] Preferably, the adjustable bottom plate includes a support frame fixed on the scissor-type lifting mechanism, a second bottom plate is fixedly installed at the center of the support frame, two first bottom plates are rotatably installed on the support frame through hinges, the two first bottom plates are symmetrically arranged on both sides of the second bottom plate, two flipping mechanisms are arranged on the support frame, the flipping mechanisms are used to drive the first bottom plates to flip ninety degrees, and a sealing assembly is also arranged on the adjustable bottom plate.

[0011] Preferably, the flipping mechanism includes a motor fixed on the support frame, a first connecting rod is fixedly mounted on the output end of the motor, the first connecting rod is rotatably connected to one end of a second connecting rod, and the other end of the second connecting rod is rotatably connected to the first base plate.

[0012] Preferably, the sealing assembly includes a first sealing strip slidably installed in the second bottom plate, and a second sealing strip and a third sealing strip slidably installed in the first bottom plate. A plurality of push rods are arranged in the first bottom plate and the second bottom plate, and the output ends of the push rods are connected to the first sealing strip, the second sealing strip or the third sealing strip.

[0013] Preferably, the assembly unit comprises a square mounting plate, connecting strips are vertically mounted on four sides of the mounting plate, a plurality of first connecting holes connected to the mounting frame are opened on the connecting strips, and a plurality of heating units are arranged on the mounting plate.

[0014] Preferably, the mounting frame includes two third mounting frames arranged in parallel, a plurality of first mounting frames connected in sequence are arranged between the two third mounting frames, the first mounting frame at the end is connected to the second mounting frame, and the first mounting frame, the second mounting frame and the third mounting frame are provided with second connecting holes connected to the first connecting holes.

[0015] Preferably, the first mounting frame includes a transverse connecting frame, a placement groove is provided in the transverse connecting frame, a plurality of vertical connecting frames are vertically installed on the transverse connecting frame, and the transverse connecting frame is also provided with a connecting groove connected to the vertical connecting frame, and an installation space for the assembly unit is formed between the transverse connecting frame and the vertical connecting frame.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention places parts that need to be annealed on an adjustable bottom plate, pushes a walking trolley into the annealing furnace body along a walking track, closes the furnace door, operates a scissor-type lifting mechanism according to the size and quantity of the parts, adjusts the height of the adjustable bottom plate, cooperates with a sealing component of the adjustable bottom plate to form an annealing space of a suitable size with the annealing furnace body, starts the annealing furnace, performs annealing, opens the furnace door after annealing, drives the walking trolley out of the annealing furnace body, and takes out the annealed parts. The present invention can flexibly adjust the size of the annealing space according to the size and quantity of the parts, can reduce unnecessary heat loss, improve energy utilization, and reduce energy consumption. At the same time, it can quickly adjust the size of the annealing space to meet the annealing needs of parts of different quantities and sizes, and improve production efficiency. In addition, through the combination of the walking track, the walking trolley and the adjustable bottom plate, a fully automated process from the entrance to the exit of the annealing furnace is realized without manual intervention, thereby greatly improving production efficiency.

[0019] The adjustable bottom plate of the present invention drives the two first bottom plates to flip 90 degrees through the flipping mechanism, and the two first bottom plates form a U-shape with the second bottom plate, and at the same time cooperate with the annealing furnace body to complete the sealing to form a smaller annealing space. When annealing a small number of small annealing parts, a more compact and suitable annealing environment can be provided. The smaller annealing space can better control the temperature uniformity during the annealing process, further optimize the temperature distribution and atmosphere control during the annealing process, and ensure the annealing quality and performance stability of the parts.

[0020] The first side plate, the second side plate, the back plate and the top plate of the present invention are composed of a mounting frame and a plurality of assembly units arranged on the mounting frame. The modular design is adopted, and the interchangeability is good, the adaptability is strong, and the standardization degree is high. The components can be arbitrarily matched and combined according to the needs to form different furnace body specifications, shapes and heating powers, which can be adapted to the heat treatment needs of various workpieces of different shapes, sizes and weights. The assembly units with modular design can be flexibly combined and installed according to the needs to adapt to annealing furnaces of different sizes and shapes. If it is necessary to expand or reduce the capacity of the annealing furnace, it can be achieved by increasing or reducing the number of assembly units without large-scale transformation of the entire annealing furnace. At the same time, the temperature control is adjusted by the heating unit in the assembly unit, which can achieve more accurate temperature regulation. Each assembly unit can independently control the temperature, so as to better meet the annealing requirements of different parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 A schematic diagram of the internal structure of the present invention from one angle;

[0023] Figure 3 A schematic diagram of the internal structure of the present invention from another angle;

[0024] Figure 4 It is a schematic diagram of the structure of the annealing furnace body of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the scissor lift mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the adjustable bottom plate structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the flipping mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the sealing assembly of the present invention;

[0029] Fig. 9 A schematic diagram of the structure of the adjustable bottom plate of the present invention in a working state;

[0030] Fig.10 It is a schematic diagram of the structure of the adjustable bottom plate and the annealing furnace body of the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the first side plate of the present invention;

[0032] Fig.12 It is a schematic diagram of the explosion structure of the first side plate of the present invention;

[0033] Fig.13 It is a schematic diagram of the assembly unit structure of the present invention;

[0034] Fig.14 It is a schematic structural diagram of the first mounting frame of the present invention.

[0035] Reference numerals:

[0036] 1. Annealing furnace body; 11. First side panel; 12. Second side panel; 13. Back panel; 14. Top panel; 2. Furnace door; 3. Travel track; 4. Travel trolley; 5. Scissor lift mechanism; 6. Adjustable bottom panel; 61. Support frame; 62. Turning mechanism; 621. Motor; 622. First connecting rod; 623. Second connecting rod; 63. First bottom panel; 64. Second bottom panel; 65. Hinge; 66. Sealing assembly; 661. First sealing strip ; 662, second sealing strip; 663, third sealing strip; 664, push rod; 7, assembly unit; 71, mounting plate; 72, connecting strip; 73, first connecting hole; 74, heating unit; 8, mounting frame; 81, first mounting frame; 811, horizontal connecting frame; 812, placement groove; 813, vertical connecting frame; 814, connecting groove; 84, second connecting hole; 82, second mounting frame; 83, third mounting frame; 9, supporting foot. DETAILED DESCRIPTION

[0037] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention.

[0042] Example:

[0043] Refer to the attached Figures 1 to 14 A modular annealing furnace comprises an annealing furnace body 1, on which a furnace door 2 is arranged, the annealing furnace body 1 comprises a first side panel 11, a second side panel 12, a back panel 13 and a top panel 14 connected to each other, the first side panel 11, the second side panel 12 and the back panel 13 are fixed on supporting feet 9, a walking track 3 is arranged below the annealing furnace body 1, one end of the walking track 3 extends out of the annealing furnace body 1, a walking trolley 4 is arranged on the walking track 3, a scissor-type lifting mechanism 5 is arranged on the walking trolley 4, an adjustable bottom plate 6 is arranged on the upper end of the scissor-type lifting mechanism 5, the scissor-type lifting mechanism 5 adjusts the height of the adjustable bottom plate 6, and the adjustable bottom plate 6 and the annealing furnace body 1 form annealing spaces of different sizes.

[0044] The first side plate 11, the second side plate 12, the back plate 13 and the top plate 14 have the same structure, which is composed of a mounting frame 8 and a plurality of assembly units 7 arranged on the mounting frame 8, and a plurality of assembly units 7 are arranged on the upper end of the adjustable bottom plate 6. The furnace door 2 also has the same structure as the first side plate 11.

[0045] The adjustable bottom plate 6 includes a support frame 61 fixed on the scissor-type lifting mechanism 5, a second bottom plate 64 is fixedly installed at the center of the support frame 61, and the support frame 61 is rotatably installed with two first bottom plates 63 through a hinge 65. The two first bottom plates 63 are symmetrically arranged on both sides of the second bottom plate 64. Two flipping mechanisms 62 are arranged on the support frame 61. The flipping mechanisms 62 are used to drive the first bottom plates 63 to flip ninety degrees. A sealing assembly 66 is also arranged on the adjustable bottom plate 6.

[0046] The flip mechanism 62 includes a motor 621 fixed on the support frame 61 , a first connecting rod 622 is fixedly mounted on the output end of the motor 621 , the first connecting rod 622 is rotatably connected to one end of a second connecting rod 623 , and the other end of the second connecting rod 623 is rotatably connected to the first base plate 63 .

[0047] The sealing assembly 66 includes a first sealing strip 661 slidably mounted in the second base plate 64 and a second sealing strip 662 and a third sealing strip 663 slidably mounted in the first base plate 63. A plurality of push rods 664 are arranged in the first base plate 63 and the second base plate 64. The output end of the push rod 664 is connected to the first sealing strip 661, the second sealing strip 662 or the third sealing strip 663.

[0048] The assembly unit 7 includes a square mounting plate 71, and connecting strips 72 are vertically mounted on the four sides of the mounting plate 71. The connecting strips 72 are provided with a plurality of first connecting holes 73 connected to the mounting frame 8, and a plurality of heating units 74 are arranged on the mounting plate 71. A heat-insulating plate (not shown in the figure) is also arranged on the back of the assembly unit 7 to reduce heat loss. In addition, a heat-insulating plate is arranged on the outer side of the annealing furnace body 1.

[0049] The mounting frame 8 includes two third mounting frames 83 arranged in parallel, a plurality of first mounting frames 81 connected in sequence are arranged between the two third mounting frames 83, the first mounting frame 81 at the end is connected to the second mounting frame 82, and the first mounting frame 81, the second mounting frame 82 and the third mounting frame 83 are provided with a second connecting hole 84 connected to the first connecting hole 73. The first connecting hole 73 and the second connecting hole 84 are connected by bolts and nuts.

[0050] The first mounting frame 81 includes a transverse connecting frame 811, and a placement slot 812 is provided in the transverse connecting frame 811. The placement slot 812 is used to accommodate bolts, nuts, lines, pipes and other connecting parts. A plurality of vertical connecting frames 813 are vertically installed on the transverse connecting frame 811, and a connection slot 814 connected to the vertical connecting frame 813 is also provided on the transverse connecting frame 811. The installation space of the assembly unit 7 is formed between the transverse connecting frame 811 and the vertical connecting frame 813.

[0051] Working principle:

[0052] Place the parts to be annealed on the adjustable bottom plate 6, push the walking trolley 4 into the annealing furnace body 1 along the walking track 3, close the furnace door 2, and operate the scissor lift mechanism 5 to adjust the height of the adjustable bottom plate 6 according to the size and quantity of the parts. Figure 2 and Figure 3As shown, it is a schematic diagram of the adjustable bottom plate 6 at different heights. After the height adjustment is completed, the push rod 664 pushes the first sealing strip 661, the second sealing strip 662 and the third sealing strip 663 to extend outward, thereby contacting the inner wall of the annealing furnace body 1 to achieve sealing. The annealing furnace body 1 cooperates with the sealing assembly 66 of the adjustable bottom plate 6 to form an annealing space of suitable size with the annealing furnace body 1. Start the annealing furnace and perform annealing. After the annealing is completed, open the furnace door 2, and the walking trolley 4 drives out of the annealing furnace body 1 to take out the annealed parts.

[0053] like Figure 7 As shown, when the motor 621 is started and rotated, the first connecting rod 622 at its output end will rotate accordingly. Since the first connecting rod 622 is connected to one end of the second connecting rod 623, the rotation of the first connecting rod 622 will be transmitted to the second connecting rod 623 through the connecting rod, so that the other end of the second connecting rod 623, i.e., the part connected to the first bottom plate 63, will flip, and the first bottom plate 63 will flip around the hinge 65, thereby realizing the flipping of the first bottom plate 63. Fig. 9 and Fig.10 As shown, the adjustable bottom plate 6 drives the two first bottom plates 63 to flip ninety degrees through the flipping mechanism 62, and the two first bottom plates 63 and the second bottom plate 64 form a U shape. The scissor-type lifting mechanism 5 drives the adjustable bottom plate 6 to continue to rise, and at the same time cooperates with the annealing furnace body 1 to complete the sealing to form a smaller annealing space. When annealing a small number of small annealing parts, a more compact and suitable annealing environment can be provided. The smaller annealing space can better control the temperature uniformity during the annealing process, further optimize the temperature distribution and atmosphere control during the annealing process, and ensure the annealing quality and performance stability of the parts.

[0054] Taking the first side plate 11 as an example, Figures 11 to 14 As shown, two third mounting frames 83 are vertically arranged, and the three first mounting frames 81 are connected in sequence from bottom to top. The upper end of the top first mounting frame 81 is connected to the second mounting frame 82, and the left and right ends of the first mounting frame 81 and the second mounting frame 82 are connected to the third mounting frame 83.

[0055] Three vertical connecting frames 813 are vertically arranged on the transverse connecting frame 811. The distance between the vertical connecting frame 813 and the third mounting frame 83 and the distance between two adjacent vertical connecting frames 813 are the side length of the assembly unit 7. The distance between two adjacent transverse connecting frames 811 and the distance between the uppermost transverse connecting frame 811 and the second mounting frame 82 are the side length of the assembly unit 7. The upper end of the vertical connecting frame 813 is arranged in the connecting groove 814 of the upper transverse connecting frame 811, and is connected through the first connecting hole 73, the second connecting hole 84 and the bolts and nuts, so as to connect the two upper and lower adjacent first mounting frames 81. Similarly, the first mounting frame 81 and the second mounting frame 82 are also connected through the vertical connecting frame 813 and the connecting groove 814.

[0056] In this embodiment, the furnace door 2, the first side panel 11, the second side panel 12 and the back panel 13 are each composed of four horizontal assembly units 7 and three vertical assembly units 7, and the adjustable bottom plate 6 and the top plate 14 are composed of four horizontal assembly units 7 and four vertical assembly units 7.

[0057] The furnace door 2, the first side plate 11, the second side plate 12, the back plate 13 and the top plate 14 are composed of a mounting frame 8 and a plurality of assembly units 7 arranged on the mounting frame 8. The modular design is adopted, and the interchangeability is good, the adaptability is strong, and the standardization degree is high. The components can be arbitrarily matched and combined as needed to form different furnace body specifications, shapes and heating powers, which can be adapted to the heat treatment needs of various shapes, sizes and weights of workpieces. The assembly units with modular design can be flexibly combined and installed as needed to adapt to annealing furnaces of different sizes and shapes. If it is necessary to expand or reduce the capacity of the annealing furnace, it can be achieved by increasing or reducing the number of assembly units without large-scale transformation of the entire annealing furnace. When a module fails, the problem can be quickly located and replaced without spending a lot of time to find the source of the failure, which greatly shortens the maintenance time and improves the availability of the system. At the same time, the temperature control is adjusted by the heating unit 74 in the assembly unit 7, which can achieve more accurate temperature regulation. Each assembly unit 7 can independently control the temperature, so that the annealing requirements of different parts can be better met.

[0058] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A modular annealing furnace, comprising an annealing furnace body (1), wherein the annealing furnace body (1) is provided with a furnace door (2), characterized in that: The annealing furnace body (1) comprises a first side plate (11), a second side plate (12), a back plate (13) and a top plate (14) which are connected to each other. The first side plate (11), the second side plate (12) and the back plate (13) are fixed on supporting feet (9). A walking track (3) is arranged below the annealing furnace body (1). One end of the walking track (3) extends out of the annealing furnace body (1). A walking trolley (4) is arranged on the walking track (3). A scissor-type lifting mechanism (5) is arranged on the walking trolley (4). An adjustable bottom plate (6) is arranged at the upper end of the scissor-type lifting mechanism (5). The scissor-type lifting mechanism (5) adjusts the height of the adjustable bottom plate (6). The adjustable bottom plate (6) and the annealing furnace body (1) form annealing spaces of different sizes. The first side plate (11), the second side plate (12), the back plate (13) and the top plate (14) have the same structure, and are composed of a mounting frame (8) and a plurality of assembly units (7) arranged on the mounting frame (8), and the upper end of the adjustable bottom plate (6) is provided with a plurality of assembly units (7); The adjustable bottom plate (6) comprises a support frame (61) fixed on the scissor-type lifting mechanism (5), a second bottom plate (64) being fixedly mounted at the center of the support frame (61), two first bottom plates (63) being rotatably mounted on the support frame (61) via a hinge (65), the two first bottom plates (63) being symmetrically arranged on both sides of the second bottom plate (64), two flipping mechanisms (62) being arranged on the support frame (61), the flipping mechanisms (62) being used to drive the first bottom plates (63) to flip ninety degrees, and a sealing assembly (66) being further arranged on the adjustable bottom plate (6); The turning mechanism (62) comprises a motor (621) fixed on the support frame (61); a first connecting rod (622) is fixedly mounted on the output end of the motor (621); the first connecting rod (622) is rotatably connected to one end of a second connecting rod (623); and the other end of the second connecting rod (623) is rotatably connected to the first bottom plate (63); The sealing assembly (66) comprises a first sealing strip (661) slidably mounted in the second bottom plate (64) and a second sealing strip (662) and a third sealing strip (663) slidably mounted in the first bottom plate (63). A plurality of push rods (664) are arranged in the first bottom plate (63) and the second bottom plate (64). The output ends of the push rods (664) are connected to the first sealing strip (661), the second sealing strip (662) or the third sealing strip (663).

2. A modular annealing furnace according to claim 1, characterized in that: The assembly unit (7) comprises a square mounting plate (71), connecting strips (72) being vertically mounted on four sides of the mounting plate (71), the connecting strips (72) being provided with a plurality of first connecting holes (73) connected to the mounting frame (8), and a plurality of heating units (74) being arranged on the mounting plate (71).

3. A modular annealing furnace according to claim 2, characterized in that: The mounting frame (8) comprises two third mounting frames (83) arranged in parallel, a plurality of first mounting frames (81) connected in sequence are arranged between the two third mounting frames (83), the first mounting frame (81) at the end is connected to the second mounting frame (82), and the first mounting frame (81), the second mounting frame (82) and the third mounting frame (83) are provided with second connecting holes (84) connected to the first connecting holes (73).

4. A modular annealing furnace according to claim 3, characterized in that: The first mounting frame (81) comprises a transverse connecting frame (811), a placement groove (812) is provided in the transverse connecting frame (811), a plurality of vertical connecting frames (813) are vertically mounted on the transverse connecting frame (811), and a connecting groove (814) connected to the vertical connecting frame (813) is also provided on the transverse connecting frame (811), and an installation space for the assembly unit (7) is formed between the transverse connecting frame (811) and the vertical connecting frame (813).

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