Aluminum profile mold nitriding furnace

Abstract

The utility model discloses an aluminum profile die nitriding furnace belongs to aluminum profile processing equipment technical field, it includes: the nitriding furnace body is provided with the communicating pipe, the reaction chamber, the heating frame and the exhaust valve pipe in the nitriding furnace body, and the communicating pipe is communicated between the reaction chamber and the heating frame, and the nitriding furnace body is provided with two groups of connecting pipes in the inside, and the top of two groups of connecting pipes all has the air inlet pipe, and the inside of two groups of air inlet pipes all rotatably installs the pivot, and the outside of two groups of pivots all fixedly installs the support, and the inside of two groups of air inlet pipes all slidingly installs the squirrel cage, realizes the accurate control to the air inlet, ensures the gas proportion required by reaction stable, avoids the nitriding reaction effect unstable because of gas quantity fluctuation, thereby guarantees the consistency of die nitriding quality, further ensures that gas is fully mixed reaction in the reaction chamber, lets the gas concentration of die each part contact be consistent, thereby makes the nitriding effect of die each part even, improves the overall quality of die.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum profile processing equipment, and in particular to an aluminum profile mold nitriding furnace. Background Technology

[0002] In the aluminum profile processing industry, the quality of aluminum profile molds directly affects the precision, surface quality, and production efficiency of aluminum profile products. Because aluminum profile molds need to be in contact with high-temperature molten aluminum for a long time during use and are subjected to large mechanical stress, their surfaces are prone to wear and corrosion, which leads to a shortened mold life and increased production costs. Therefore, surface strengthening treatment of aluminum profile molds is crucial, and nitriding is one of the most widely used and effective methods.

[0003] Existing aluminum profile mold nitriding furnaces lack effective gas inlet regulation mechanisms, making it difficult to precisely control the injection rate and flow rate of reactant gases such as ammonia and nitrogen. This results in significant fluctuations in the proportion of reactant gases, affecting not only the stability of the nitriding reaction but also causing inconsistent nitriding quality. Regarding gas mixing, existing nitriding furnaces often employ unidirectional stirring mechanisms, which fail to ensure thorough mixing of different gases within the reaction chamber. This leads to gas stratification or uneven local concentrations, resulting in insufficient and uneven contact between different parts of the mold and the reactant gases. Consequently, this causes significant differences in nitriding effects across different parts of the mold, impacting the overall quality and lifespan of the mold. Therefore, we propose an aluminum profile mold nitriding furnace to address this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a nitriding furnace for aluminum profile molds to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A nitriding furnace for aluminum profile molds includes: a nitriding furnace body, wherein the furnace body has a connecting pipe, a reaction chamber, a heating frame, and an exhaust valve pipe inside; the connecting pipe connects the reaction chamber and the heating frame; the furnace body has two sets of connecting pipes inside, each set of connecting pipes having an air inlet pipe at its top; each set of air inlet pipes has a rotating shaft rotatably mounted inside; each set of rotating shafts has a support rod fixedly mounted on its outer side; each set of air inlet pipes has a slidably mounted squirrel cage inside; and each set of squirrel cages has a fixedly mounted... The furnace body has two sets of support plates, one side of which is hinged with a transmission rod. A sleeve and a stirring rod are rotatably installed on the top of the furnace body. A bevel gear one is fixedly installed on the top of the stirring rod, and a bevel gear two is fixedly installed on the top of the sleeve. A frame is fixedly installed on the top of the furnace body. A motor one is fixedly installed on one side of the frame. A bevel gear three is fixedly installed on the output end of the motor one. Multiple sets of L-rods are fixedly installed on the outer side of the sleeve. Multiple sets of stirring blades are fixedly installed on the inner wall of the multiple sets of L-rods and on the outer side of the stirring rod.

[0006] Preferably, a closed door, a controller, a temperature sensor, and a pressure sensor are provided on one side of the nitriding furnace body. A viewing window is provided on one side of the closed door. The exhaust valve pipe is connected to the heating frame. The other end of the exhaust valve pipe is located on the outside of the nitriding furnace body. The bottoms of the two sets of connecting pipes are connected to the top of the reaction chamber. Connecting flanges are fixedly installed on the top outer sides of the two sets of air inlet pipes. The stirring rod is rotatably installed in the bevel gear and sleeve. Four sets of support legs are fixedly installed on the bottom of the nitriding furnace body. Anti-slip pads are provided on the bottom of the four sets of support legs.

[0007] Preferably, the two sets of support rods are hinged to the corresponding transmission rods, and the interior of the two sets of connecting flanges has multiple sets of connecting holes.

[0008] Preferably, the third bevel gear meshes with the first and second bevel gears, and the first, second and third bevel gears are all disposed within the frame, with the top of the stirring rod mounted on the top inner wall of the frame.

[0009] Preferably, the inner walls of the two sets of air intake pipes are adapted to the corresponding mouse cages, and guide grooves are provided on the inner walls of the two sets of air intake pipes, and the two sets of mouse cages are slidably installed in the corresponding guide grooves.

[0010] Preferably, a second motor is fixedly installed on the outer side of each of the two sets of air intake pipes, and one end of each of the two sets of rotating shafts is fixedly installed on the output end of the corresponding second motor.

[0011] In this utility model, an aluminum profile mold nitriding furnace is provided. The aluminum profile mold to be processed is placed into a heating frame through a closed door, and the closed door forms a sealed reaction space. A viewing window allows operators to easily observe the mold's status. A controller receives initial data from the furnace's temperature and pressure sensors in real time, providing a reference for subsequent parameter settings. Four sets of support legs with anti-slip pads ensure stable placement of the furnace body, preventing displacement during operation. Residual gas is discharged through an exhaust valve. Once the furnace temperature and pressure drop to a safe range, the closed door is opened to remove the processed mold, completing the entire nitriding process. Stable equipment operation, a controllable reaction environment, and safe operating procedures collectively ensure the consistency of nitriding quality for each batch of molds, facilitating quality control in large-scale production and improving product qualification rate and reliability. This utility model has a reasonable structural design. Ammonia, nitrogen, and other reaction gases are introduced into the inlet pipe via a connecting flange, and then enter the reaction chamber through a connecting pipe. A second motor drives a rotating shaft and support rod to rotate. The support rod, through a hinged transmission rod, pushes a support plate, causing the squirrel cage to slide along the guide groove on the inner wall of the inlet pipe, achieving precise control of the gas intake. Subsequently, the gas enters the reaction chamber for thorough mixing. A first motor drives a third bevel gear to rotate. Since the third bevel gear meshes with both the first and second bevel gears, it drives the first and second bevel gears to rotate in opposite directions, causing the stirring rod and sleeve to rotate in opposite directions. The stirring blades on the outside of the stirring rod communicate with the sleeve. The stirring blades connected by the L-shaped rod form a two-way three-dimensional stirrer, which fully stirs the gas in the reaction chamber. The gas is then transported to the heating frame through a connecting pipe, ensuring that the gas is fully mixed and reacted in the reaction chamber. This ensures that the gas concentration in contact with all parts of the mold is consistent. In conjunction with the heating frame, the mold is heated to complete the entire nitriding process. This allows for precise control of the incoming gas, ensuring a stable gas ratio required for the reaction and avoiding instability in the nitriding reaction effect due to fluctuations in gas volume. This guarantees the consistency of the nitriding quality of the mold and further ensures that the gas is fully mixed and reacted in the reaction chamber, so that the gas concentration in contact with all parts of the mold is consistent. This results in a uniform nitriding effect in all parts of the mold and improves the overall quality of the mold. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a nitriding furnace for aluminum profile molds proposed in this utility model; Figure 2 This is a cross-sectional structural schematic diagram of a nitriding furnace for aluminum profile molds proposed in this utility model; Figure 3 This is a partial three-dimensional structural diagram of a nitriding furnace for aluminum profile molds proposed in this utility model. Figure 4 for Figure 2 A magnified view of part A in the middle; Figure 5 for Figure 2 A magnified view of part B in the middle section.

[0013] In the diagram: 1. Nitriding furnace body; 2. Exhaust valve pipe; 3. Sealed door; 4. Viewing window; 5. Controller; 6. Heating frame; 7. Connecting pipe; 8. Reaction chamber; 9. Support leg; 10. Inlet pipe; 11. Connecting flange; 12. Frame; 13. Motor 1; 14. Stirring rod; 15. Sleeve; 16. Bevel gear 1; 17. Bevel gear 2; 18. Bevel gear 3; 19. L-shaped rod; 20. Stirring blade; 21. Rotating shaft; 22. Support rod; 23. Transmission rod; 24. Support plate; 25. Squirrel cage; 26. Guide groove; 27. Connecting pipe; 28. Motor 2. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-5 A nitriding furnace for aluminum profile molds includes: a nitriding furnace body 1, with a connecting pipe 7, a reaction chamber 8, a heating frame 6, and an exhaust valve pipe 2 inside the nitriding furnace body 1. The connecting pipe 7 connects the reaction chamber 8 and the heating frame 6. Two sets of connecting pipes 27 are provided inside the nitriding furnace body 1. Each set of connecting pipes 27 has an air inlet pipe 10 connected to its top. A rotating shaft 21 is rotatably installed inside each set of air inlet pipes 10. A support rod 22 is fixedly installed on the outer side of each set of rotating shafts 21. A squirrel cage 25 is slidably installed inside each set of air inlet pipes 10. A support plate 2 is fixedly installed inside each set of squirrel cages 25. 4. A transmission rod 23 is hinged to one side of each of the two sets of support plates 24. A sleeve 15 and a stirring rod 14 are rotatably installed on the top of the nitriding furnace body 1. A bevel gear 16 is fixedly installed on the top of the stirring rod 14. A bevel gear 27 is fixedly installed on the top of the sleeve 15. A frame 12 is fixedly installed on the top of the nitriding furnace body 1. A motor 13 is fixedly installed on one side of the frame 12. A bevel gear 38 is fixedly installed on the output end of the motor 13. Multiple sets of L rods 19 are fixedly installed on the outer side of the sleeve 15. Multiple sets of stirring blades 20 are fixedly installed on the inner wall of the multiple sets of L rods 19 and the outer side of the stirring rod 14.

[0016] In this embodiment, a closed door 3, a controller 5, a temperature sensor, and a pressure sensor are provided on one side of the nitriding furnace body 1. A viewing window 4 is provided on one side of the closed door 3. The exhaust valve pipe 2 is connected to the heating frame 6. The other end of the exhaust valve pipe 2 is located on the outside of the nitriding furnace body 1. The bottom of the two sets of connecting pipes 27 is connected to the top of the reaction chamber 8. The top outer side of the two sets of air inlet pipes 10 is fixedly installed with connecting flanges 11. The stirring rod 14 is rotatably installed in the bevel gear 17 and the sleeve 15. Four sets of support legs 9 are fixedly installed at the bottom of the nitriding furnace body 1. The bottom of the four sets of support legs 9 is provided with anti-slip pads to effectively prevent the furnace body from shifting due to vibration and other reasons during operation, and to ensure the stability and safety of the equipment operation.

[0017] In this embodiment, the two sets of support rods 22 are hinged to the corresponding transmission rods 23, and multiple sets of connection holes are opened inside the two sets of connecting flanges 11, so as to ensure the accuracy and smoothness of transmission and the accuracy of adjustment.

[0018] In this embodiment, bevel gear 18 meshes with bevel gear 16 and bevel gear 2 17. Bevel gear 16, bevel gear 2 17 and bevel gear 18 are all arranged inside the frame 12. The top of the stirring rod 14 is installed on the top inner wall of the frame 12 to stir the gas in the reaction chamber 8 in an all-round and uniform manner, thereby improving the gas mixing effect.

[0019] In this embodiment, the inner walls of the two sets of air inlet pipes 10 are adapted to the corresponding rat cages 25, and guide grooves 26 are provided on the inner walls of the two sets of air inlet pipes 10. The two sets of rat cages 25 are slidably installed in the corresponding guide grooves 26 to ensure the stability and smoothness of the movement of the rat cages 25 and to ensure the stable disturbance effect on the gas.

[0020] In this embodiment, motor 28 is fixedly installed on the outer side of both sets of air intake pipes 10, and one end of each set of rotating shafts 21 is fixedly installed on the output end of the corresponding motor 28, so as to achieve precise adjustment of the gas disturbance intensity and meet different gas pretreatment requirements.

[0021] In this embodiment, during use, the operator places the aluminum profile mold to be processed into the heating frame 6 through the closed door 3 on one side of the nitriding furnace body 1, and closes the closed door 3 to form a sealed reaction space. At this time, the controller 5 can receive the initial data from the temperature and pressure sensors inside the furnace in real time, providing a reference for subsequent parameter setting. Four sets of support legs 9 with anti-slip pads ensure that the furnace body is placed stably and avoids displacement during operation. The viewing window 4 allows the operator to observe the status of the mold. The exhaust valve pipe 2 is set to discharge residual gas. After the temperature and pressure inside the furnace drop to a safe range, the closed door 3 is opened to take out the processed mold, completing the entire nitriding process. Ammonia, nitrogen, and other reaction gases are introduced into two sets of inlet pipes 10 via the connecting flange 11 at the top of the inlet pipe 10, and then enter the reaction chamber 8 through the connecting pipe 27. The starting motor 28 drives the rotating shaft 21 and support rod 22 to rotate. The support rod 22, through the hinged transmission rod 23, pushes the support plate 24, causing the cage 25 to slide along the guide groove 26 on the inner wall of the inlet pipe 10, thus achieving precise control of the gas intake. The gases are fully mixed inside the reaction chamber 8. The starting motor 13 drives the bevel gear 18 to rotate. Because the bevel gear 18 interacts with the bevel gear 16 and the bevel gear... The two gears 17 mesh with each other, thereby driving the first bevel gear 16 and the second bevel gear 17 to rotate in opposite directions, which in turn causes the stirring rod 14 and the sleeve 15 to rotate in opposite directions. The stirring blade 20 on the outside of the stirring rod 14 and the sleeve 15 are connected by the stirring blade 20 through the L rod 19 to form a two-way three-dimensional stirring, which fully stirs the gas in the reaction chamber 8, and transports the gas to the heating frame 6 through the connecting pipe 7 to ensure that the gas is fully mixed and reacted in the reaction chamber 8, so that the gas concentration in contact with all parts of the mold is consistent, and the heating frame 6 is used to heat the mold to complete the entire nitriding process.

[0022] The above provides a detailed description of the aluminum profile mold nitriding furnace provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only intended to help understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A nitriding furnace for aluminum profile molds, characterized in that, include: The nitriding furnace body (1) is provided with a connecting pipe (7), a reaction chamber (8), a heating frame (6), and an exhaust valve pipe (2) inside. The connecting pipe (7) connects the reaction chamber (8) and the heating frame (6). The nitriding furnace body (1) is provided with two sets of connecting pipes (27). The top of each of the two sets of connecting pipes (27) is connected to an air inlet pipe (10). The inside of each of the two sets of air inlet pipes (10) is rotatably mounted with a rotating shaft (21). The outside of each of the two sets of rotating shafts (21) is fixedly mounted with a support rod (22). The inside of each of the two sets of air inlet pipes (10) is slidably mounted with a rat cage (25). The inside of each of the two sets of rat cages (25) is fixedly mounted with a support plate (24). (24) is hinged to one side with a transmission rod (23). A sleeve (15) and a stirring rod (14) are rotatably installed on the top of the nitriding furnace body (1). A bevel gear one (16) is fixedly installed on the top of the stirring rod (14). A bevel gear two (17) is fixedly installed on the top of the sleeve (15). A frame (12) is fixedly installed on the top of the nitriding furnace body (1). A motor one (13) is fixedly installed on one side of the frame (12). A bevel gear three (18) is fixedly installed on the output end of the motor one (13). Multiple sets of L rods (19) are fixedly installed on the outside of the sleeve (15). Multiple sets of stirring blades (20) are fixedly installed on the inner wall of the multiple sets of L rods (19) and the outside of the stirring rod (14).

2. The aluminum profile mold nitriding furnace according to claim 1, characterized in that, The nitriding furnace body (1) is provided with a closed door (3), a controller (5), a temperature sensor and a pressure sensor on one side. A viewing window (4) is provided on one side of the closed door (3). The exhaust valve pipe (2) is connected to the heating frame (6). The other end of the exhaust valve pipe (2) is located on the outside of the nitriding furnace body (1). The bottom of the two sets of connecting pipes (27) is connected to the top of the reaction chamber (8). The top outer side of the two sets of air inlet pipes (10) is fixedly installed with connecting flanges (11). The stirring rod (14) is rotatably installed in the bevel gear (17) and the sleeve (15). The bottom of the nitriding furnace body (1) is fixedly installed with four sets of support legs (9). The bottom of the four sets of support legs (9) is provided with anti-slip pads.

3. The aluminum profile mold nitriding furnace according to claim 2, characterized in that, The two sets of support rods (22) are hinged to the corresponding transmission rods (23), and the two sets of connecting flanges (11) have multiple sets of connecting holes inside.

4. The aluminum profile mold nitriding furnace according to claim 1, characterized in that, The bevel gear three (18) meshes with bevel gear one (16) and bevel gear two (17). The bevel gear one (16), bevel gear two (17) and bevel gear three (18) are all set inside the frame (12). The top of the stirring rod (14) is installed on the top inner wall of the frame (12).

5. The aluminum profile mold nitriding furnace according to claim 1, characterized in that, The inner walls of the two sets of air intake pipes (10) are adapted to the corresponding rat cages (25), and guide grooves (26) are provided on the inner walls of the two sets of air intake pipes (10). The two sets of rat cages (25) are slidably installed in the corresponding guide grooves (26).

6. The aluminum profile mold nitriding furnace according to claim 1, characterized in that, Motor 2 (28) is fixedly installed on the outside of both sets of air intake pipes (10), and one end of each set of rotating shafts (21) is fixedly installed on the output end of the corresponding motor 2 (28).

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