Novel furnace door pressing mechanism of aluminum alloy heat treatment furnace
Patent Information
- Application Number
- CN202522423418.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-14
AI Technical Summary
[0005]本实用新型的目的在于，提供铝合金热处理炉新型炉门压紧机构，能够解决现有铝合金热处理炉的炉门压紧机构多采用气缸与炉门直接连接的结构，存在显著缺陷，一是压紧力不足，无法形成紧密密封，导致炉膛内热量泄漏，破坏温度均匀性，二是导向部件对加工精度要求极高，长期处于高温环境下易发生热变形，进一步加剧密封失效，三是炉门起降过程中易出现定位偏差，且热变形产生的误差无法抵消，长期使用后密封性能持续下降，严重影响铝合金热处理的一致性和合格率的问题
[0015]1、本申请通过设置压紧机构，支座和支架分别对杠杆连杆和气缸进行支撑安装，气缸的伸缩端通过铰链带动杠杆连杆绕支座内的销轴转动，利用杠杆原理放大压紧力，使锥形轴与导杆的导向槽紧密贴合，从而将炉门与炉体可靠压紧，解决了现有炉门压紧力不足导致的密封差、热量泄漏问题，保障了炉体内炉膛温度的均匀性；
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Figure CN224872866U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum alloy heat treatment technology, and in particular to a novel furnace door clamping mechanism for aluminum alloy heat treatment furnaces. Background Technology
[0002] Aluminum alloy heat treatment furnaces are key equipment in aluminum alloy processing. Their core function is to improve the microstructure of aluminum alloys through precise temperature control, eliminate crystal segregation, and enhance the mechanical properties, corrosion resistance, and processing stability of the alloys. Aluminum alloys have extremely high thermal sensitivity, and the temperature control accuracy requirements for heat treatment processes are stringent. In particular, during the homogenization process, the temperature control accuracy must meet the standard of ≤±1℃ and the furnace temperature uniformity of ≤±3℃. The sealing performance and clamping effect of the furnace door directly determine the stability of the furnace temperature, which is a key factor affecting the quality of heat treatment.
[0003] However, the existing furnace door clamping mechanisms of aluminum alloy heat treatment furnaces mostly adopt a structure in which the cylinder is directly connected to the furnace door, which has significant defects. First, the clamping force is insufficient, which cannot form a tight seal, resulting in heat leakage in the furnace chamber and disrupting temperature uniformity. Second, the guide components have extremely high requirements for machining precision, and are prone to thermal deformation under long-term high-temperature environment, which further aggravates the seal failure. Third, positioning deviations are prone to occur during the opening and closing of the furnace door, and the errors caused by thermal deformation cannot be offset. After long-term use, the sealing performance continues to decline, which seriously affects the consistency and pass rate of aluminum alloy heat treatment.
[0004] To address this, a novel furnace door clamping mechanism for aluminum alloy heat treatment furnaces is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a novel furnace door clamping mechanism for aluminum alloy heat treatment furnaces. This mechanism addresses the significant drawbacks of existing furnace door clamping mechanisms, which often employ a direct connection between the cylinder and the furnace door. Firstly, the clamping force is insufficient, failing to create a tight seal and leading to heat leakage within the furnace chamber, thus disrupting temperature uniformity. Secondly, the guide components require extremely high machining precision and are prone to thermal deformation under prolonged high-temperature conditions, further exacerbating seal failure. Thirdly, positioning deviations are prone to occur during furnace door lifting and lowering, and the errors caused by thermal deformation cannot be offset, resulting in a continuous decline in sealing performance after long-term use, severely impacting the consistency and pass rate of aluminum alloy heat treatment.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel furnace door clamping mechanism for aluminum alloy heat treatment furnace, comprising a furnace body, a furnace door provided on the front side of the furnace body, and clamping mechanisms provided on both sides of the front side of the furnace body, wherein the inner side of the clamping mechanism is welded to the outer side of the furnace door;
[0007] The clamping mechanism includes guide rods, which are welded to both sides of the furnace door. Guide grooves are provided on the outer sides of the guide rods. Supports and brackets are welded to both sides of the front side of the furnace body. The brackets are located outside the supports. A cylinder is installed inside the brackets. The central fixed shaft on the outer side of the cylinder is fixed to the bracket as a whole. A hinge is provided at the telescopic end of the cylinder. A pin is rotatably connected inside the support. A lever is rotatably connected inside the hinge. The middle of the rear side of the lever is rotatably connected to the outer side of the pin. A tapered shaft is welded to the inner side of the lever, and the tapered shaft is located inside the guide groove.
[0008] Preferably, the inner side of the guide groove is an arc-shaped contact surface, and the curvature of the arc-shaped contact surface matches the taper of the tapered shaft.
[0009] Preferably, the hinge has a self-lubricating bearing inside, and the self-lubricating bearing is made of polytetrafluoroethylene.
[0010] Preferably, the surface of the tapered shaft is coated with a smooth, wear-resistant coating, the thickness of which is 0.3-0.5 mm.
[0011] Preferably, gas supply control pipelines are provided on both sides of the furnace body, and the gas supply control pipelines are connected to the cylinder.
[0012] Preferably, a display board is provided on the front side of the furnace door, and the surface of the display board can be marked with information such as the equipment name and function by spraying or printing.
[0013] Preferably, a reinforcing rib is welded to the outer side of the support, and the rear side of the reinforcing rib is welded to the front side of the furnace body.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This application sets up a clamping mechanism, in which the support and bracket support and install the lever connecting rod and the cylinder respectively. The telescopic end of the cylinder drives the lever connecting rod to rotate around the pin in the support through the hinge. The clamping force is amplified by lever principle, so that the conical shaft and the guide groove of the guide rod are tightly fitted, thereby reliably clamping the furnace door to the furnace body. This solves the problem of poor sealing and heat leakage caused by insufficient clamping force of the existing furnace door, and ensures the uniformity of furnace temperature inside the furnace.
[0016] 2. This application uses a conical shaft set on the lever connecting rod. When the furnace door is raised and lowered, the guide groove slides along the conical shaft. The conical structure of the conical shaft can automatically offset the positioning deviation of the furnace door raising and lowering and the thermal deformation error caused by high temperature. There is no need for high-precision guide components, which solves the problem of sealing failure caused by thermal deformation and positioning deviation of the furnace door and improves the long-term reliability of the seal. Attached Figure Description
[0017] Figure 1 This is an overall structural diagram of the novel furnace door clamping mechanism for aluminum alloy heat treatment furnace of this utility model;
[0018] Figure 2 This is a plan view of the furnace body of this utility model;
[0019] Figure 3 This is a structural diagram of the clamping mechanism of this utility model;
[0020] Figure 4 This is a structural diagram of the tapered shaft of this utility model.
[0021] In the diagram, 1. Furnace body; 2. Furnace door; 3. Pressing mechanism; 301. Guide rod; 302. Guide groove; 303. Support; 304. Bracket; 305. Cylinder; 306. Hinge; 307. Pin; 308. Lever connecting rod; 309. Conical shaft; 4. Gas supply control pipeline; 5. Display board; 6. Reinforcing rib; 7. Smooth wear-resistant coating. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 The present invention provides the following technical solution:
[0024] A novel furnace door clamping mechanism for aluminum alloy heat treatment furnace includes a furnace body 1, a furnace door 2 provided on the front side of the furnace body 1, and clamping mechanisms 3 provided on both sides of the front side of the furnace body 1. The inner side of the clamping mechanism 3 is welded to the outer side of the furnace door 2.
[0025] The clamping mechanism 3 includes a guide rod 301, which is welded to both sides of the furnace door 2. A guide groove 302 is provided on the outer side of the guide rod 301. A support 303 and a bracket 304 are welded to both sides of the front side of the furnace body 1. The bracket 304 is located outside the support 303. A cylinder 305 is installed inside the bracket 304. The central fixed shaft on the outer side of the cylinder 305 is fixed to the bracket 304 as a whole. A hinge 306 is provided at the telescopic end of the cylinder 305. A pin 307 is rotatably connected inside the support 303. A lever connecting rod 308 is rotatably connected inside the hinge 306. The middle of the rear side of the lever connecting rod 308 is rotatably connected to the outer side of the pin 307. A tapered shaft 309 is welded to the inner side of the lever connecting rod 308. The tapered shaft 309 is located inside the guide groove 302.
[0026] In this embodiment: by setting up a furnace body 1, a furnace door 2, and a clamping mechanism 3, the furnace body 1 provides a stable installation base for the furnace door 2 and the clamping mechanism 3. The furnace door 2 is used to seal the furnace chamber and ensure the airtight environment required for aluminum alloy heat treatment. The guide rod 301 of the clamping mechanism 3 is welded to both sides of the furnace door 2. The support 303 and the bracket 304 are respectively welded to both sides of the front side of the furnace body 1. The support 303 provides a rotation mounting point for the pin 307, and the bracket 304 is fixed to the central fixed shaft on the outside of the cylinder 305 to ensure that the cylinder 305 is firmly installed. When the furnace door 2 is raised and lowered, the guide groove 302 on the outside of the guide rod 301 will slide along the conical shaft 309 on the inside of the lever connecting rod 308. The conical structure can automatically offset the positioning deviation during the raising and lowering of the furnace door 2, and at the same time absorb the thermal deformation error generated by the furnace door 2 and the guide rod 301 under high temperature environment, without relying on High-precision guide components ensure the fitting accuracy of both. When the furnace door 2 needs to be pressed, the cylinder 305 starts and extends and retracts. Its extension end drives the lever connecting rod 308 to rotate around the pin 307 inside the support 303 through the hinge 306. The lever principle is used to amplify the force of the cylinder 305. As the lever connecting rod 308 rotates, the tapered shaft 309 welded on its inner side will move synchronously. Since the tapered shaft 309 is always located in the guide groove 302 of the guide rod 301, it will gradually and tightly fit with the guide groove 302 during the movement. Finally, through the lever force amplification and the precise cooperation of the tapered shaft 309 and the guide groove 302, the furnace door 2 and the furnace body 1 are reliably pressed together. This design effectively avoids heat leakage in the furnace chamber, ensures the uniformity of the furnace temperature, and improves the long-term stability of the seal, making the entire aluminum alloy heat treatment process smoother and more precise.
[0027] Specifically, such as Figure 3 As shown, the inner side of the guide groove 302 is an arc-shaped contact surface, and the curvature of the arc-shaped contact surface matches the taper of the tapered shaft 309.
[0028] Specifically, such as Figure 4 As shown, the hinge 306 has a self-lubricating bearing inside, and the material of the self-lubricating bearing is polytetrafluoroethylene.
[0029] Specifically, such as Figure 4 As shown, the surface of the tapered shaft 309 is coated with a smooth wear-resistant coating 7, the thickness of which is 0.3-0.5 mm.
[0030] In this embodiment: by setting the inner side of the guide groove 302 as an arc-shaped contact surface, and matching its arc with the taper of the tapered shaft 309, the contact area between the tapered shaft 309 and the guide groove 302 can be increased, making the two fit more tightly and further improving the sealing performance of the furnace door 2 after it is pressed. The self-lubricating bearing inside the hinge 306 is made of polytetrafluoroethylene, which can ensure that the hinge 306 drives the lever linkage 308 to rotate smoothly without any additional lubricant. At the same time, it is suitable for the high-temperature environment around the furnace body 1 and avoids lubrication failure. In addition, the 0.3-0.5mm thick smooth wear-resistant coating 7 applied to the surface of the tapered shaft 309 can reduce the frictional loss when the guide groove 302 slides, extend the service life of the tapered shaft 309, and ensure that it can maintain good fit accuracy even after long-term use.
[0031] Specifically, such as Figure 1 As shown, gas supply control pipes 4 are provided on both sides of the furnace body 1, and the gas supply control pipes 4 are connected to the cylinder 305.
[0032] Specifically, such as Figure 3 As shown, a display board 5 is provided on the front side of the furnace door 2. The surface of the display board 5 can be marked with information such as equipment name and function by spraying or printing.
[0033] In this embodiment: by setting up a gas supply control pipeline 4 and a display board 5, the gas supply control pipeline 4 is connected to the cylinder 305, which can stably deliver gas that meets the pressure requirements to the cylinder 305, ensuring that the extension and retraction of the cylinder 305 is precise and controllable, thereby making the pressing and releasing operation of the pressing mechanism 3 stable and reliable. The display board 5 on the front side of the furnace door 2 can be marked with the equipment name, function and other information by spraying or printing, which makes it convenient for operators to quickly identify the equipment and core functions, and also facilitates daily management and maintenance. At the same time, it allows external personnel to intuitively understand the basic situation of the equipment and improves the ease of use.
[0034] Specifically, such as Figure 4 As shown, a reinforcing rib plate 6 is welded to the outer side of the support 303, and the rear side of the reinforcing rib plate 6 is welded to the front side of the furnace body 1.
[0035] In this embodiment: By setting a reinforcing rib plate 6, which is welded to the outside of the support 303 and the rear side is welded to the front side of the furnace body 1, the connection strength and stability between the support 303 and the furnace body 1 can be enhanced. When the clamping mechanism 3 is working, the lever connecting rod 308 rotates around the pin shaft 307 and exerts a force on the support 303. The reinforcing rib plate 6 can effectively disperse this force, preventing the support 303 from deforming or cracking at the weld due to long-term stress, ensuring the overall stability of the clamping mechanism 3, and ensuring that it can still reliably perform the clamping function after long-term use.
[0036] Working Principle: During the use of the aluminum alloy heat treatment furnace, the furnace body 1 first provides a stable installation foundation for components such as the furnace door 2, clamping mechanism 3, and gas supply control pipeline 4. Supports 303 and brackets 304 are welded to the front sides of the furnace body 1. Support 303 provides a rotation mounting point for the pin 307. The bracket 304 is fixed to the central fixed shaft on the outer side of the cylinder 305, ensuring the cylinder 305 is securely installed. The reinforcing rib 6 welded to the outer side of the support 303 is welded to the front side of the furnace body 1, further enhancing the connection strength and stability between the support 303 and the furnace body 1. Before use, the gas supply control pipeline 4 and the cylinder 305 are connected... 5. The cylinder 305 is connected to ensure a stable supply of gas meeting the pressure requirements, guaranteeing precise and controllable operation. When the furnace door 2 needs to be closed, the guide rods 301 welded to both sides of the furnace door 2 move during its raising and lowering process. The arc-shaped contact surface inside the guide groove 302 on the outer side of the guide rod 301 slides along the conical shaft 309 on the inner side of the lever connecting rod 308. The conical structure can automatically offset the positioning deviation of the furnace door 2 during raising and lowering and the thermal deformation error between the furnace door 2 and the guide rod 301 under high temperature conditions, ensuring fitting accuracy without the need for high-precision guide components. After the furnace door 2 reaches the closed position, the cylinder 305 starts and extends / retracts. The telescopic end drives the lever connecting rod 308 to rotate around the pin 307 inside the support 303 via the hinge 306. The self-lubricating PTFE bearing inside the hinge 306 allows for smooth rotation without additional lubricant, making it suitable for high-temperature environments and preventing lubrication failure. When the lever connecting rod 308 rotates, it amplifies the force of the cylinder 305 using the lever principle, causing the inner welded tapered shaft 309 to move synchronously. The 0.3-0.5mm thick smooth wear-resistant coating 7 on the surface of the tapered shaft 309 reduces frictional loss with the guide groove 302, allowing the two to gradually and tightly fit together, achieving reliable clamping between the furnace door 2 and the furnace body 1. During the heat treatment process, the tightly fitting guide groove 302 and conical shaft 309 effectively prevent heat leakage in the furnace and ensure the uniformity of furnace temperature. At the same time, the gas supply control pipeline 4 continuously provides a stable gas source to the cylinder 305 to ensure a stable pressing state. After the heat treatment is completed, the cylinder 305 extends and retracts in the opposite direction, and the lever connecting rod 308 is reset through the hinge 306. The conical shaft 309 separates from the guide groove 302, and the furnace door 2 can then be opened smoothly. Throughout the process, all components work together to ensure that the pressing and releasing operation of the furnace door 2 is stable and reliable, improves the long-term stability of the seal, and ensures a smooth and precise heat treatment process for aluminum alloys.
[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel furnace door clamping mechanism for aluminum alloy heat treatment furnace, comprising a furnace body (1), characterized in that: A furnace door (2) is provided on the front side of the furnace body (1), and a pressing mechanism (3) is provided on both sides of the front side of the furnace body (1). The inner side of the pressing mechanism (3) is welded to the outer side of the furnace door (2). The pressing mechanism (3) includes a guide rod (301), which is welded to both sides of the furnace door (2). A guide groove (302) is provided on the outer side of the guide rod (301). A support (303) and a bracket (304) are welded to both sides of the front side of the furnace body (1). The bracket (304) is located outside the support (303). A cylinder (305) is installed inside the bracket (304). The central fixed shaft outside the cylinder (305) is connected to the bracket (304). 04) Fixed as one piece, the telescopic end of the cylinder (305) is provided with a hinge (306), the support (303) is rotatably connected with a pin (307), the hinge (306) is rotatably connected with a lever link (308), the middle of the rear side of the lever link (308) is rotatably connected to the outside of the pin (307), and a tapered shaft (309) is welded to the inner side of the lever link (308), and the tapered shaft (309) is located inside the guide groove (302).
2. The novel furnace door clamping mechanism for aluminum alloy heat treatment furnace according to claim 1, characterized in that: The inner side of the guide groove (302) is an arc-shaped contact surface, and the curvature of the arc-shaped contact surface matches the taper of the tapered shaft (309).
3. The novel furnace door clamping mechanism for aluminum alloy heat treatment furnace according to claim 1, characterized in that: The hinge (306) is equipped with a self-lubricating bearing, which is made of polytetrafluoroethylene.
4. The novel furnace door clamping mechanism for aluminum alloy heat treatment furnace according to claim 1, characterized in that: The surface of the tapered shaft (309) is coated with a smooth wear-resistant coating (7), the thickness of which is 0.3-0.5 mm.
5. The novel furnace door clamping mechanism for aluminum alloy heat treatment furnace according to claim 1, characterized in that: Both sides of the furnace body (1) are provided with gas supply control pipelines (4), which are connected to the cylinder (305).
6. The novel furnace door clamping mechanism for aluminum alloy heat treatment furnace according to claim 1, characterized in that: A display board (5) is provided on the front side of the furnace door (2). The surface of the display board (5) can be marked with information such as equipment name and function by spraying or printing.
7. The novel furnace door clamping mechanism for aluminum alloy heat treatment furnace according to claim 1, characterized in that: The support (303) is welded with a reinforcing rib plate (6) on its outer side, and the rear side of the reinforcing rib plate (6) is welded to the front side of the furnace body (1).