An automatic flow-through tube furnace

Abstract

The utility model relates to vacuum heating technical field, concretely relates to a kind of automatic flow transfer tubular furnace, including first support, second support, rack, multiple tubular furnaces and multiple heating sleeve components, the upper portion of first support is circumferentially equipped with first conveyor belt, the upper end of corresponding tubular furnace is extended with first clamping telescopic component by first conveyor belt, first clamping telescopic component is used to clamp the upper end of tubular furnace, multiple heating sleeve components are sequentially arranged along the transmission direction of first conveyor belt, each heating sleeve component includes first drive part, first side mould and second side mould, first side mould is arranged on the side of first support, second side mould is arranged on the side of second support, first drive part is used to drive second side mould to move to with corresponding first side mould press-fit or separate. Multiple tubular furnaces are driven by first conveyor belt in multiple heating sleeve components flow transfer, without waiting tubular furnace to drop to room temperature, can let next tubular furnace enter heating sleeve component while residual heat, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heating technology, specifically to an automatic rotary tube furnace. Background Technology

[0002] As a core piece of high-precision temperature control equipment, tube furnaces have deeply penetrated key industrial fields such as semiconductor material preparation, special ceramic sintering, aerospace component heat treatment, and chemical catalytic reactions. Their temperature control accuracy directly determines product performance and reaction efficiency. Currently, the mainstream industrial approach adopts a single-furnace, single-tube independent operation mode and a mobile furnace body adapted to multiple workstations. While these traditional solutions can meet basic temperature control requirements, they are gradually revealing numerous technical bottlenecks in actual production. After a traditional tube furnace completes one cycle of processing, the residual high temperature on the inner wall and cavity of the furnace tube is typically maintained at several hundred to several thousand degrees Celsius. Natural cooling is required before material replacement, furnace tube cleaning, or restarting operation can be performed. This cooling process not only leads to production interruptions and extends the process cycle, but also requires the consumption of electrical or thermal energy to reheat the furnace tube from room temperature to the target process temperature (some high-temperature processes reach over 1200°C). This process is not only time-consuming but also requires additional compensation for furnace body heat loss, resulting in a significant increase in energy consumption per unit product, which contradicts the industrial trend of energy conservation and emission reduction. Summary of the Invention

[0003] To overcome the shortcomings and deficiencies of existing technologies, the purpose of this utility model is to provide an automatic circulating tubular furnace. Multiple tubular furnaces are driven by a first conveyor belt to flow sequentially along multiple heating elements. The heating elements adopt a first side mold and a second side mold that can be separated and combined for heating. After the reaction is completed, the tubular furnace can detach from the heating elements and enter the subsequent cooling station after its temperature drops to a safe threshold. There is no need to wait for the tubular furnace to drop to room temperature. The next tubular furnace that has finished loading can enter the heating elements while the heating elements still have residual heat. This completely eliminates the intermittent cycle of traditional single furnace single tube cooling, loading and heating, realizes continuous material feeding and unloading and process flow, and effectively improves production efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An automatic rotary tube furnace includes a first support member, a second support member, a frame, multiple tube furnaces, and multiple heating components. The first and second support members are disposed at intervals within the frame. A first conveyor belt is circumferentially arranged on the upper part of the first support member. A first clamping telescopic component extends from the first conveyor belt to the upper end of the corresponding tube furnace. The first clamping telescopic component is used to clamp the upper end of the tube furnace. The multiple heating components are located below the first conveyor belt and are arranged sequentially along the transmission direction of the first conveyor belt. Each heating component includes a first drive member, a first side mold, and a second side mold disposed opposite to the first side mold. The first side mold is used to fit on one side of the corresponding tube furnace, and the second side mold is used to fit on the other side of the corresponding tube furnace. The first side mold is disposed on the side of the first support member near the second support member, and the second side mold is disposed on the side of the second support member near the first support member. The first drive member is used to drive the second side mold to move to press or separate from the corresponding first side mold.

[0006] Furthermore, the first driving member is located on the side of the second support member away from the first support member, and the output end of the first driving member passes through the second support member until it is connected to the second side mold.

[0007] Furthermore, a second conveyor belt is provided circumferentially at the lower part of the first support member. The second conveyor belt is located below the first side mold. The first and second conveyor belts rotate synchronously. A second clamping telescopic assembly extends from the second conveyor belt to the lower end of the corresponding tubular furnace. The second clamping telescopic assembly is used to clamp the lower end of the tubular furnace.

[0008] Furthermore, the first clamping telescopic assembly and the second clamping telescopic assembly each include a connecting rod, a telescopic member, and a clamp. One end of the connecting rod is fixedly connected to the first conveyor belt or the second conveyor belt, and the other end of the connecting rod is connected to the telescopic member. The output end of the telescopic member is connected to the clamp. The clamp is used to clamp the upper or lower end of the corresponding tubular furnace. The telescopic member can drive the clamp to reciprocate along the direction of approaching or moving away from the first side mold.

[0009] Furthermore, the tubular furnace includes a furnace body, the upper end of which is provided with a detachable upper furnace cover, and the lower end of which is provided with a detachable lower furnace cover. The outer surfaces of the upper and lower furnace covers are provided with vent pipes that communicate with the furnace body, and the clamps are used to clamp the corresponding vent pipes.

[0010] Furthermore, the first side mold has a first receiving groove on the side near the second side mold, which is used to receive one side of the furnace body; the second side mold has a second receiving groove on the side near the first side mold that communicates with the first receiving groove, which is used to receive the other side of the furnace body.

[0011] Furthermore, the heating kit also includes an upper clamping member and a lower clamping member disposed opposite to the upper clamping member. Both the upper and lower clamping members are disposed on the side of the first support member near the second support member. The upper clamping member is located above the first conveyor belt, wherein the output end of the upper clamping member is located above the first receiving groove, and the upper clamping member is used to fit the vent pipe of the upper furnace cover. The lower clamping member is located below the second conveyor belt, wherein the output end of the lower clamping member is located below the first receiving groove, and the lower clamping member is used to fit the vent pipe of the lower furnace cover.

[0012] Furthermore, both the upper and lower clamping members include a bracket, a second driving member, and a through pipe. One end of the bracket is connected to the lower end of the first support member, and the other end of the bracket is connected to the second driving member. The output end of the second driving member is connected to the side of the through pipe. The second driving member is used to drive the through pipe to move up and down to fit onto or detach from the corresponding vent pipe.

[0013] Furthermore, the automatic rotary tube furnace also includes a stroke limiting device, which includes a detection element, a first positioning block, and a second positioning block disposed opposite to the first positioning block. The detection element is disposed on the side of the first positioning block near the second positioning block, and the detection element can slide laterally relative to the first positioning block. The first positioning block is disposed on the side of the first side mold or the second side mold, and the second positioning block is disposed on the side of the second side mold or the first side mold.

[0014] Furthermore, the automatic rotary tube furnace also includes a control device, and the first conveyor belt, the second conveyor belt, the telescopic component, the clamp, the first side mold, the second side mold, the detection component, the first drive component, and the second drive component are all electrically connected to the control device.

[0015] The beneficial effects of this utility model are:

[0016] This utility model discloses an automatic circulating tubular furnace with a simple structure. Multiple tubular furnaces are sequentially rotated along multiple heating elements via a first conveyor belt. The heating elements employ a detachable first and second side mold for combined heating. After the reaction is complete, the tubular furnace can detach from the heating element and proceed to the subsequent cooling station for loading once its temperature drops to a safe threshold. There is no need to wait for the tubular furnace to cool to room temperature; the next furnace can enter the heating element while it still has residual heat. This completely eliminates the intermittent cycles of traditional single-furnace, single-tube cooling, loading, and heating, achieving continuous material feeding and process flow, effectively improving production efficiency. The first and second side molds form a closed enclosure around the tubular furnace, reducing heat exchange between the furnace and the outside environment. Furthermore, each heating element has independent temperature control, avoiding temperature cross-interference and further reducing heat loss. This allows for the simultaneous production of more than one type of material. Furthermore, during the process of transporting the tubular furnace via the first conveyor belt and heating it in the heating kit, the first clamping telescopic assembly always clamps the tubular furnace. The first clamping telescopic assembly realizes the automatic clamping, transfer and positioning of the tubular furnace, making the overall device operate stably. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an automatic rotary tube furnace.

[0018] Figure 2 This is a three-dimensional structural diagram of an automatic rotary tube furnace from another perspective.

[0019] Figure 3 This is a side view of an automatic rotary tube furnace.

[0020] Figure 4 This is a partial structural diagram of an automatic rotary tube furnace.

[0021] The reference numerals in the figures include:

[0022] 1. First support member; 11. First conveyor belt; 12. Second conveyor belt; 2. Second support member; 3. Frame; 4. Tube furnace; 41. Furnace body; 42. Upper furnace cover; 43. Lower furnace cover; 44. Vent pipe; 5. Heating kit; 51. First drive member; 52. First side mold; 521. First receiving groove; 53. Second side mold; 531. Second receiving groove; 54. Bracket; 55. Second drive member; 56. Through pipe; 7. Connecting rod; 8. Telescopic member; 9. Clamp; 10. Stroke limiting device; 101. Detection piece; 102. First positioning block; 103. Second positioning block. Detailed Implementation

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0024] like Figure 1-4 As shown, an automatic transfer tube furnace includes a first support member 1, a second support member 2, a frame 3, multiple tube furnaces 4, and multiple heating elements 5. The first support member 1 and the second support member 2 are arranged at intervals inside the frame 3. A first conveyor belt 11 is circumferentially arranged on the upper part of the first support member 1. A first clamping telescopic component extends from the first conveyor belt 11 to the upper end of the corresponding tube furnace 4. The first clamping telescopic component is used to clamp the upper end of the tube furnace 4. The multiple heating elements 5 are all located below the first conveyor belt 11, and the multiple heating elements 5 are conveyed along the first conveyor belt 11. The heating components are arranged sequentially in the direction of movement. Each heating component 5 includes a first driving member 51, a first side mold 52, and a second side mold 53 disposed opposite to the first side mold 52. The first side mold 52 is used to be fitted onto one side of the corresponding tube furnace 4, and the second side mold 53 is used to be fitted onto the other side of the corresponding tube furnace 4. The first side mold 52 is disposed on the side of the first support member 1 near the second support member 2, and the second side mold 53 is disposed on the side of the second support member 2 near the first support member 1. The first driving member 51 is used to drive the second side mold 53 to move so as to press or separate from the corresponding first side mold 52.

[0025] In this embodiment, the first clamping telescopic assembly is used to clamp the tubular furnace 4 while also reciprocating in a direction close to or away from the first side mold 52. When the first conveyor belt 11 moves the tubular furnace 4 to the heating kit 5 station, the reciprocating motion of the first clamping telescopic assembly can move the tubular furnace 4 into or away from the corresponding first side mold 52. The heating kit 5 is used to heat and maintain the temperature of the tubular furnace 4.

[0026] This invention relates to an automatic circulating tubular furnace with a simple structure. Multiple tubular furnaces 4 are sequentially rotated along multiple heating elements 5 via a first conveyor belt 11. The heating elements 5 employ a detachable, opposing heating system with first side molds 52 and second side molds 53. Once the reaction is complete, the tubular furnace 4 can detach from the heating elements 5 and proceed to the subsequent cooling station after its temperature drops to a safe threshold. This eliminates the need to wait for the furnace to cool to room temperature before the next furnace 4, while the heating elements 5 still retain residual heat. This completely eliminates the intermittent cycles of traditional single-furnace, single-tube cooling, loading, and heating, enabling continuous material feeding and process flow, and effectively improving production efficiency. The first side molds 52 and second side molds 53 form a closed enclosure around the tubular furnace 4, reducing heat exchange between the furnace and the outside environment. Furthermore, each heating element 5 has independent temperature control, avoiding temperature cross-interference and further reducing heat loss. This allows for the simultaneous production of more than one type of material. Furthermore, during the process of the tubular furnace 4 being transported by the first conveyor belt 11 and heated by the heating kit 5, the first clamping telescopic assembly always clamps the tubular furnace 4. The first clamping telescopic assembly realizes the automatic clamping, transfer and positioning of the tubular furnace 4, making the overall device operate stably.

[0027] Furthermore, the first driving member 51 is located on the side of the second support member 2 away from the first support member 1, and the output end of the first driving member 51 passes through the second support member 2 until it is connected to the second side mold 53, thereby improving the structural compactness.

[0028] Furthermore, a second conveyor belt 12 is provided circumferentially at the lower part of the first support member 1. The second conveyor belt 12 is located below the first side mold 52. The first conveyor belt 11 and the second conveyor belt 12 rotate synchronously. A second clamping telescopic assembly extends from the lower end of the second conveyor belt 12 to the corresponding tube furnace 4. The second clamping telescopic assembly is used to clamp the lower end of the tube furnace 4. During the transportation of the tube furnace 4 by the second conveyor belt 12 and during the heating process by the heating kit 5, the second clamping telescopic assembly always clamps the tube furnace 4. The tube furnace 4 is fixed at both ends by the upper first clamping telescopic assembly and the lower second clamping telescopic assembly to avoid the risk of tilting, deflection, or even tipping of the tube furnace 4 due to gravity, transmission vibration, or the force of the side mold pressing during the flow process. At the same time, the first conveyor belt 11 and the second conveyor belt 12 rotate synchronously to ensure the consistency of the movement trajectory and speed of the upper and lower ends of the tube furnace 4, and also to ensure that the tube furnace 4 accurately stops at the preset position of the corresponding heating kit 5. In this embodiment, the second clamping telescopic assembly is used to clamp the tubular furnace 4 while also being able to reciprocate along the direction of approaching or moving away from the first side mold 52. When the first conveyor belt 11 and the second conveyor belt 12 cooperate to move the tubular furnace 4 to the corresponding heating kit 5 station, the tubular furnace 4 can be moved into or away from the corresponding first side mold 52 through the reciprocating motion of the first clamping telescopic assembly and the second clamping telescopic assembly.

[0029] Furthermore, the first clamping telescopic assembly and the second clamping telescopic assembly respectively include a connecting rod 7, a telescopic member 8, and a clamp 9. One end of the connecting rod 7 is fixedly connected to the first conveyor belt 11 or the second conveyor belt 12, and the other end of the connecting rod 7 is connected to the telescopic member 8. The output end of the telescopic member 8 is connected to the clamp 9. The clamp 9 is used to clamp the upper or lower end of the corresponding tubular furnace 4. The telescopic member 8 can drive the clamp 9 to reciprocate along the direction of approaching or moving away from the first side mold 52. Specifically, during the transport process on the first conveyor belt 11 and the second conveyor belt 12, the clamp 9 always clamps the tubular furnace 4. When it flows to the corresponding heating kit 5, the telescopic member 8 pushes the clamp 9 to move along the direction close to the first side mold 52 until one side of the tubular furnace 4 is embedded in the corresponding first side mold 52. After the first driving member 51 drives the second side mold 53 to engage with the first side mold 52, the first side mold 52 and the second side mold 53 are heated to raise and maintain the temperature of the tubular furnace 4. After the reaction is completed, the temperature is lowered to a safe threshold. The first driving member 51 drives the second side mold 53 to separate from the first side mold 52. The telescopic member 8 pushes the clamp 9 to move along the direction away from the first side mold 52, and it continues to run to the cooling station via the first conveyor belt 11 and the second conveyor belt 12. The telescopic member 8 can ensure the accurate switching of the tubular furnace 4 between each station, avoid collisions between the tubular furnaces 4 during the transfer process, and facilitate the tubular furnace 4 to be embedded in or away from the first side mold 52.

[0030] Furthermore, the tubular furnace 4 includes a furnace body 41, with a detachable upper furnace cover 42 at the upper end and a detachable lower furnace cover 43 at the lower end. Both the upper and lower furnace covers 42 and 43 have ventilation pipes 44 communicating with the furnace body 41 on their outer surfaces. The clamp 9 is used to hold the corresponding ventilation pipes 44. The upper and lower furnace covers 42 and 43 of the tubular furnace 4 are detachable, allowing materials to be directly loaded into or removed from the furnace body 41 without disassembling the entire tubular furnace 4, resulting in a simple structure.

[0031] Furthermore, the first side mold 52 has a first receiving groove 521 on its side near the second side mold 53, which is used to receive one side of the furnace body 41; the second side mold 53 has a second receiving groove 531 on its side near the first side mold 52, which communicates with the first receiving groove 521, and is used to receive the other side of the furnace body 41. The first receiving groove 521 and the second receiving groove 531 form an enclosed enclosure of the tubular furnace 4, reducing heat exchange between the tubular furnace 4 and the outside environment.

[0032] Furthermore, the heating kit 5 also includes an upper clamping member and a lower clamping member disposed opposite to the upper clamping member. Both the upper and lower clamping members are disposed on the side of the first support member 1 near the second support member 2. The upper clamping member is located above the first conveyor belt 11, wherein the output end of the upper clamping member is located above the first receiving groove 521, and the upper clamping member is used to fit the vent pipe 44 of the upper furnace cover 42. The lower clamping member is located below the second conveyor belt 12, wherein the output end of the lower clamping member is located below the first receiving groove 521, and the lower clamping member is used to fit the vent pipe 44 of the lower furnace cover 43. The upper and lower clamping parts not only fix the vent pipe 44, but also form a secondary seal at the connection between the vent pipe 44 and the furnace cover, preventing leakage of reaction gas inside the furnace or infiltration of outside air that could affect the purity of the atmosphere inside the furnace. Moreover, the clamping part sleeve design does not obstruct the inlet and outlet of the vent pipe 44, ensuring smooth flow of inert gas protection.

[0033] Furthermore, both the upper and lower clamping members include a bracket 54, a second driving member 55, and a through pipe 56. One end of the bracket 54 is connected to the lower end of the first support member 1, and the other end of the bracket 54 is connected to the second driving member 55. The output end of the second driving member 55 is connected to the side of the through pipe 56. The second driving member 55 is used to drive the through pipe 56 to move up and down to fit onto or detach from the corresponding vent pipe 44. The through pipe 56 is designed to not block the inlet and outlet of the vent pipe 44, and the through pipe 56 is connected to the vent pipe 44. When the clamp 9 holds the tubular furnace 4 and embeds it in the corresponding first side mold 52, the second driving member 55 drives the through pipe 56 to move up and down in the vertical direction, so as to achieve the coaxial sleeve of the through pipe 56 and the vent pipe 44. Then, the through pipes 56 of the upper clamping member and the lower clamping member are respectively connected to the external gas pipeline, so that the inert gas in the tubular furnace 4 can circulate, ensuring the stability of the reaction, and preventing the leakage of reaction gas under the clamping of the second driving member 55.

[0034] Furthermore, the automatic rotary tube furnace also includes a stroke limiting device 10, which includes a detection element 101, a first positioning block 102, and a second positioning block 103 disposed opposite to the first positioning block 102. The detection element 101 is disposed on the side of the first positioning block 102 near the second positioning block 103, and the detection element 101 can slide laterally relative to the first positioning block 102. The first positioning block 102 is disposed on the side of the first side mold 52 or the second side mold 53, and the second positioning block 103 is disposed on the side of the second side mold 53 or the first side mold 52. When the first side mold 52 and the second side mold 53 are pressed together to the preset stroke, the second positioning block 103 presses against the detection element 101, causing the detection element 101 to slide laterally. When the sliding distance is lower than the threshold, it indicates that the first side mold 52 and the second side mold 53 are pressed too loosely, resulting in a sealing gap. When the sliding distance is higher than the threshold, it indicates that the first side mold 52 and the second side mold 53 are pressed too tightly. The detection element 101 immediately sends a signal to the control device, and the detection element 101 controls the first driving element 51 to stop moving. This measure avoids deformation of the furnace body 41 and damage to the side molds due to excessive pressing, and also prevents sealing gaps due to excessive pressing, ensuring the fitting accuracy between the side molds and the furnace body 41, and ensuring stable and controllable temperature control and sealing effect.

[0035] Furthermore, the automatic rotary tube furnace also includes a control device. The first conveyor belt 11, the second conveyor belt 12, the telescopic component 8, the clamp 9, the first side mold 52, the second side mold 53, the detection component 101, the first drive component 51, and the second drive component 55 are all electrically connected to the control device. This achieves fully automated closed-loop control of the automatic rotary tube furnace.

[0036] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An automatic rotary tube furnace, characterized in that: The assembly includes a first support member (1), a second support member (2), a frame (3), multiple tube furnaces (4), and multiple heating kits (5). The first support member (1) and the second support member (2) are arranged at intervals inside the frame (3). A first conveyor belt (11) is provided circumferentially on the upper part of the first support member (1). A first clamping telescopic component extends from the first conveyor belt (11) to the upper end of the corresponding tube furnace (4). The first clamping telescopic component is used to clamp the upper end of the tube furnace (4). The multiple heating kits (5) are all located below the first conveyor belt (11), and the multiple heating kits (5) are arranged sequentially along the transmission direction of the first conveyor belt (11). Each heating kit (5) includes a first driving member (51), a first side mold (52), and a second side mold (53) disposed opposite to the first side mold (52). The first side mold (52) is used to be fitted onto one side of the corresponding tube furnace (4), and the second side mold (53) is used to be fitted onto the other side of the corresponding tube furnace (4). The first side mold (52) is disposed on the side of the first support member (1) near the second support member (2), and the second side mold (53) is disposed on the side of the second support member (2) near the first support member (1). The first driving member (51) is used to drive the second side mold (53) to move to press or separate from the corresponding first side mold (52).

2. The automatic rotary tube furnace according to claim 1, characterized in that: The first driving member (51) is located on the side of the second support member (2) away from the first support member (1), and the output end of the first driving member (51) passes through the second support member (2) until it is connected to the second side mold (53).

3. The automatic rotary tube furnace according to claim 1, characterized in that: The lower part of the first support member (1) is provided with a second conveyor belt (12) in the circumferential direction. The second conveyor belt (12) is located below the first side mold (52). The first conveyor belt (11) and the second conveyor belt (12) rotate synchronously. The second conveyor belt (12) extends to the lower end of the corresponding tube furnace (4) with a second clamping telescopic component. The second clamping telescopic component is used to clamp the lower end of the tube furnace (4).

4. The automatic rotary tube furnace according to claim 3, characterized in that: The first clamping telescopic assembly and the second clamping telescopic assembly each include a connecting rod (7), a telescopic member (8), and a clamp (9). One end of the connecting rod (7) is fixedly connected to the first conveyor belt (11) or the second conveyor belt (12), and the other end of the connecting rod (7) is connected to the telescopic member (8). The output end of the telescopic member (8) is connected to the clamp (9). The clamp (9) is used to clamp the upper or lower end of the corresponding tubular furnace (4). The telescopic member (8) can drive the clamp (9) to reciprocate along the direction of approaching or moving away from the first side mold (52).

5. The automatic rotary tube furnace according to claim 4, characterized in that: The tubular furnace (4) includes a furnace body (41), the upper end of which is provided with a detachable upper furnace cover (42), and the lower end of which is provided with a detachable lower furnace cover (43). The outer surfaces of the upper furnace cover (42) and the lower furnace cover (43) are provided with ventilation pipes (44) that communicate with the furnace body (41). The clamp (9) is used to clamp the corresponding ventilation pipes (44).

6. The automatic rotary tube furnace according to claim 1, characterized in that: The first side mold (52) has a first receiving groove (521) on the side near the second side mold (53), which is used to receive one side of the furnace body (41); the second side mold (53) has a second receiving groove (531) on the side near the first side mold (52) that communicates with the first receiving groove (521), which is used to receive the other side of the furnace body (41).

7. The automatic rotary tube furnace according to claim 5, characterized in that: The heating kit (5) also includes an upper clamping member and a lower clamping member disposed opposite to the upper clamping member. The upper clamping member and the lower clamping member are both disposed on the side of the first support member (1) near the second support member (2). The upper clamping member is located above the first conveyor belt (11), wherein the output end of the upper clamping member is located above the first receiving groove (521), and the upper clamping member is used to fit the vent pipe (44) of the upper furnace cover (42). The lower clamping member is located below the second conveyor belt (12), wherein the output end of the lower clamping member is located below the first receiving groove (521), and the lower clamping member is used to fit the vent pipe (44) of the lower furnace cover (43).

8. The automatic rotary tube furnace according to claim 7, characterized in that: Both the upper and lower clamping components include a bracket (54), a second driving component (55), and a through pipe (56). One end of the bracket (54) is connected to the lower end of the first support component (1), and the other end of the bracket (54) is connected to the second driving component (55). The output end of the second driving component (55) is connected to the side of the through pipe (56). The second driving component (55) is used to drive the through pipe (56) to move up and down to fit onto the corresponding vent pipe (44) or to detach from the corresponding vent pipe (44).

9. The automatic rotary tube furnace according to claim 8, characterized in that: It also includes a stroke limiting device (10), which includes a detection element (101), a first positioning block (102), and a second positioning block (103) disposed opposite to the first positioning block (102). The detection element (101) is disposed on the side of the first positioning block (102) near the second positioning block (103). The detection element (101) can slide laterally relative to the first positioning block (102). The first positioning block (102) is disposed on the side of the first side mold (52) or the second side mold (53), and the second positioning block (103) is disposed on the side of the second side mold (53) or the first side mold (52).

10. The automatic rotary tube furnace according to claim 9, characterized in that: It also includes a control device, and the first conveyor belt (11), the second conveyor belt (12), the telescopic component (8), the clamp (9), the first side mold (52), the second side mold (53), the detection component (101), the first drive component (51), and the second drive component (55) are all electrically connected to the control device.

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