Workpiece screw rod lifting type heat treatment nitriding furnace

Abstract

The utility model discloses a work piece screw rod lifting type heat treatment nitriding furnace belongs to nitriding furnace technical field, including nitriding furnace main part, the nitriding furnace main part includes the furnace body and the movable setting on the furnace cover of furnace body, the outer surface of furnace body is equipped with the installation shell, the installation shell is linked together with furnace body, the upper surface fixed mounting of installation shell is equipped with motor no.

Description

Technical Field

[0001] This utility model belongs to the field of nitriding furnace technology, specifically relating to a workpiece screw lifting heat treatment nitriding furnace. Background Technology

[0002] The nitriding furnace has a circular structure. The furnace body is constructed of refractory bricks to reduce heat loss and save energy. The pit-type nitriding furnace uses a heat-resistant steel fan, which is resistant to high temperatures and has a long service life. The furnace uses electric heating, and heat treatment parameters such as heating chamber temperature and ammonia decomposition rate are dynamically controlled by high-precision instruments and sensors, ensuring high accuracy and parameter stability. The furnace employs an electric screw-type lifting structure, using a water-cooled jacket and silicone rubber sealing devices to ensure no gas leakage from the furnace. The furnace uses a zoned heating design, dividing the furnace body into upper and lower zones for heating. The furnace atmosphere and pressure are controlled by a medium flow control system and a furnace pressure detection device to ensure optimal process parameters.

[0003] Nitriding furnaces are mainly used for gas nitriding of carbon steel parts and heat treatment such as mold quenching. This equipment can perform gas soft nitriding treatment.

[0004] Existing nitriding furnaces lack a mesh cylinder mechanism inside the furnace body to support the workpieces, making it inconvenient to quickly load and unload workpieces. This inconvenience affects work efficiency and wastes time. To address this, we propose a workpiece screw lifting heat treatment nitriding furnace. Utility Model Content

[0005] The purpose of this utility model is to provide a workpiece screw lifting heat treatment nitriding furnace to solve the problems mentioned in the background art, such as the lack of a mesh cylinder mechanism inside the furnace body to support the workpiece during the use of existing nitriding furnaces, the inconvenience of quickly loading and unloading the workpiece, the inconvenience of loading and unloading materials affecting the work efficiency and wasting loading and unloading time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a workpiece screw lifting heat treatment nitriding furnace, comprising a nitriding furnace body, the nitriding furnace body including a furnace body and a furnace cover movably disposed on the furnace body, an mounting shell installed on the outer surface of the furnace body, the mounting shell communicating with the furnace body, a motor fixedly mounted on the upper surface of the mounting shell, a threaded rod rotatably mounted inside the mounting shell, the output shaft of the motor fixedly connected to the end of the threaded rod, a threaded plate threadedly mounted on the outer surface of the threaded rod, a bearing plate fixedly mounted on the side of the threaded plate, the bearing plate slidably disposed on the inner wall of the furnace body, a workpiece placement mesh cylinder detachably mounted on the upper surface of the bearing plate, a fixing column fixedly mounted on the lower surface of the furnace cover, a top cover plate fixedly mounted at the bottom end of the fixing column, the top cover plate fitting against the upper surface of the workpiece placement mesh cylinder, a second motor fixedly mounted on the upper surface of the top cover plate, and several actuating blades disposed below the top cover plate.

[0007] The above solution utilizes a threaded rod in conjunction with a support plate and a workpiece placement mesh cylinder. After the furnace cover is opened, the rotation of the threaded rod drives the support plate to move the workpiece placement mesh cylinder up and down, facilitating the removal and storage of workpieces without requiring entry into the furnace body, thus improving operational convenience. Furthermore, the workpiece placement mesh cylinder can be easily disassembled and reassembled using a fixing rod, fixing sleeve, and fixing nut, further enhancing the ease of workpiece storage and retrieval. A top cover plate, in conjunction with a second motor, a rotating shaft, and actuating blades, seals the workpiece placement mesh cylinder, preventing workpieces from falling out. The second motor drives the rotating shaft to rotate the actuating blades, which actuate the workpieces, ensuring better contact between the workpieces and the atmospheric gas, guaranteeing optimal operational results.

[0008] In the above scheme, it should be noted that both motor one and motor two are electrically connected to an external power supply.

[0009] In a preferred embodiment, the inner wall of the mounting shell is fixed with several guide bars, and the side of the threaded plate is provided with several guide grooves, and the guide bars and guide grooves are used in sliding cooperation.

[0010] By adopting the above scheme, the guide bar and guide groove are used together to ensure the stable movement of the threaded plate when the threaded rod rotates to drive the threaded plate to move up and down, and it is not easy for wobbling to occur.

[0011] In a preferred embodiment, a plurality of limiting strips are fixedly installed on the inner wall of the furnace body, and a plurality of limiting grooves are provided on the bearing plate, with the limiting strips slidably installed on the inner wall of the limiting grooves.

[0012] Using the above scheme, when the bearing plate moves up and down, it will slide on the surface of the limiting strip through the limiting groove. The combination of the limiting strip and the limiting groove can ensure the stable movement of the bearing plate.

[0013] In a preferred embodiment, a plurality of fixing rods are fixedly installed on the upper surface of the bearing plate, and a plurality of fixing sleeves are fixedly installed on the outer surface of the workpiece placement mesh cylinder. The fixing sleeves are fitted onto the outer surface of the fixing rods, and the surface of the fixing rods has threads and fixing nuts are threadedly installed thereon. The fixing nuts are fitted onto the surface of the fixing sleeves.

[0014] Using the above solution, the workpiece can be conveniently assembled and locked by passing the fixing rod through the fixing sleeve and using the fixing nut. The locking structure is simple, the threaded connection is stable, and it is not easy to loosen.

[0015] In a preferred embodiment, the upper surface of the workpiece placement mesh cylinder is provided with several alignment grooves, and the lower surface of the top cover plate is fixedly installed with several alignment rods, which are used in conjunction with the alignment grooves.

[0016] By using the above solution, the alignment rod and alignment groove can be used together to limit the top part of the workpiece placed in the mesh cylinder, thus preventing shaking and improving the stability of use.

[0017] In a preferred embodiment, a second motor is fixedly mounted on the upper surface of the top cover plate, a rotating shaft is fixedly mounted on the output shaft of the second motor, and the actuating blade is fixedly mounted on the outer surface of the rotating shaft.

[0018] The above scheme utilizes a motor to drive the rotating shaft, which in turn drives the agitator blades to rotate. The rotation of the agitator blades then agitates and tumbles the workpiece, allowing it to better contact the gas atmosphere and ensuring good working results.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This screw-lift heat treatment nitriding furnace uses a threaded rod in conjunction with a support plate and a workpiece placement mesh cylinder. After the furnace cover is opened, the rotation of the threaded rod drives the support plate to move the workpiece placement mesh cylinder up and down, making it convenient to remove and store the workpiece without having to go deep into the furnace body, thus improving the ease of operation. In addition, the workpiece placement mesh cylinder can be easily disassembled and assembled using a fixing rod, a fixing sleeve, and a fixing nut, further improving the ease of storing and retrieving the workpiece.

[0021] This screw-lift heat treatment nitriding furnace is equipped with a top cover plate, a motor, a rotating shaft, and a paving blade. The top cover plate can enclose the workpiece placement mesh cylinder to prevent the workpiece from falling out. The motor drives the rotating shaft to rotate the paving blade, which can move the workpiece so that it can better contact the atmospheric gas and ensure good working results. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a structural schematic diagram of the cross-section of the furnace body of this utility model;

[0024] Figure 3 This is a structural schematic diagram of the cross-section of the workpiece placement mesh tube of this utility model;

[0025] Figure 4 This is a schematic diagram of the exploded structure of the bearing plate, workpiece placement mesh cylinder, and top cover plate of this utility model.

[0026] In the diagram: 1. Nitriding furnace body; 2. Furnace body; 3. Furnace cover; 4. Mounting shell; 5. Motor 1; 6. Threaded rod; 7. Threaded plate; 8. Bearing plate; 9. Workpiece placement mesh tube; 10. Fixing column; 11. Top cover plate; 12. Actuating blade; 13. Guide bar; 14. Fixing rod; 15. Fixing sleeve; 16. Fixing nut; 17. Motor 2; 18. Rotating shaft; 19. Alignment rod; 20. Limiting bar. Detailed Implementation

[0027] Please see Figure 1-4 This utility model provides a workpiece screw lifting heat treatment nitriding furnace, including a nitriding furnace body 1, which includes a furnace body 2 and a furnace cover 3 movably mounted on the furnace body 2. An installation shell 4 is installed on the outer surface of the furnace body 2 and is connected to the furnace body 2. A motor 5 is fixedly installed on the upper surface of the installation shell 4. A threaded rod 6 is rotatably installed inside the installation shell 4. The output shaft of the motor 5 is fixedly connected to the end of the threaded rod 6. A threaded plate 7 is threadedly installed on the outer surface of the threaded rod 6. A bearing plate 8 is fixedly installed on the side of the threaded plate 7. The bearing plate 8 is slidably mounted on the inner wall of the furnace body 2. A workpiece placement mesh cylinder 9 is detachably installed on the upper surface of the bearing plate 8. A fixing column 10 is fixedly installed on the lower surface of the furnace cover 3. A top cover plate 11 is fixedly installed at the bottom end of the fixing column 10. The top cover plate 11 is attached to the upper surface of the workpiece placement mesh cylinder 9. A motor 17 is fixedly installed on the upper surface of the top cover plate 11. Several actuating blades 12 are arranged below the top cover plate 11.

[0028] By using a threaded rod 6 in conjunction with a support plate 8 and a workpiece placement mesh cylinder 9, the rotation of the threaded rod 6 after the furnace cover 3 is opened drives the support plate 8 to move the workpiece placement mesh cylinder 9 up and down, thus facilitating the removal and storage of workpieces without requiring deep access to the furnace body 2, improving ease of operation. Furthermore, the workpiece placement mesh cylinder 9 can be easily disassembled and reassembled using a fixing rod 14, a fixing sleeve 15, and a fixing nut 16, further enhancing the ease of workpiece storage and retrieval. A top cover plate 11, in conjunction with a second motor 17, a rotating shaft 18, and a turning blade 12, seals the workpiece placement mesh cylinder 9, preventing workpieces from falling out. The second motor 17 drives the rotating shaft 18 to rotate the turning blade 12, which in turn moves the workpiece, allowing it to better contact the atmospheric gas and ensuring good operational results.

[0029] The inner wall of the mounting shell 4 is fixed with several guide bars 13, and the side of the threaded plate 7 is provided with several guide grooves. The guide bars 13 and the guide grooves are used in sliding cooperation. The cooperation between the guide bars 13 and the guide grooves can ensure the stable movement of the threaded plate 7 when the threaded rod 6 rotates to drive the threaded plate 7 to move up and down, and it is not easy for the threaded plate 7 to shake.

[0030] Several limiting strips 20 are fixedly installed on the inner wall of the furnace body 2, and several limiting grooves are opened on the bearing plate 8. The limiting strips 20 are slidably installed on the inner wall of the limiting grooves. When the bearing plate 8 moves up and down, it will slide on the surface of the limiting strips 20 through the limiting grooves. The combination of the limiting strips 20 and the limiting grooves can ensure the stable movement of the bearing plate 8.

[0031] Several fixing rods 14 are fixedly installed on the upper surface of the bearing plate 8, and several fixing sleeves 15 are fixedly installed on the outer surface of the workpiece placement mesh cylinder 9. The fixing sleeves 15 are fitted onto the outer surface of the fixing rods 14. The surface of the fixing rods 14 has threads and fixing nuts 16 are installed on the threads. The fixing nuts 16 are fitted onto the surface of the fixing sleeves 15. By using the fixing rods 14 to pass through the fixing sleeves 15 and cooperate with the fixing nuts 16, the workpiece placement mesh cylinder 9 can be conveniently assembled and locked. The locking structure is simple, the threaded connection has good stability, and it is not easy to loosen.

[0032] The upper surface of the workpiece placement mesh cylinder 9 is provided with several alignment grooves, and several alignment rods 19 are fixedly installed on the lower surface of the top cover plate 11. The alignment rods 19 are used in conjunction with the alignment grooves. By using the alignment rods 19 and the alignment grooves in conjunction, the top part of the workpiece placement mesh cylinder 9 can be limited to avoid shaking and improve the stability of use.

[0033] A second motor 17 is fixedly installed on the upper surface of the top cover plate 11. A rotating shaft 18 is fixedly installed on the output shaft of the second motor 17. A toggle blade 12 is fixedly installed on the outer surface of the rotating shaft 18. The second motor 17 drives the rotating shaft 18 to rotate, and the rotating shaft 18 drives the toggle blade 12 to rotate. The rotation of the toggle blade 12 is used to toggle and tumble the workpiece, so that the workpiece can better contact the atmospheric gas and ensure good working effect.

[0034] In use, first control the furnace cover 3 to move upward and separate from the furnace body 2. Then start the motor 5 to drive the threaded rod 6 to rotate, which in turn drives the threaded plate 7 to move the bearing plate 8 upward. This causes the workpiece placement screen 9 to move upward out of the furnace body 2. Then unscrew the fixing nut 16 to unlock the fixing rod 14 and the fixing sleeve 15. Pull the workpiece placement screen 9 upward to make the fixing sleeve 15 disengage from the fixing rod 14. Then remove the workpiece placement screen 9, put the workpiece to be nitrided into the workpiece placement screen 9, and then put the workpiece placement screen 9 onto the fixing rod 14 through the fixing sleeve 15. After putting it on, screw it on. The fixing nut 16 is used to lock the workpiece placement mesh cylinder 9, and then the installation and locking of the workpiece placement mesh cylinder 9 are completed. Then, the motor 5 is started again to control the threaded rod 6 to reverse, and then the bearing plate 8 is driven by the threaded plate 7 to move the workpiece placement mesh cylinder 9 downward and into the furnace body 2. Then, the furnace cover 3 is controlled to move downward and close the furnace body 2. Then, the nitriding furnace body 1 is started to perform nitriding treatment. At the same time, the motor 5 is started to drive the rotating shaft 18 to drive the agitator blade 12 to rotate. The rotation of the agitator blade 12 is used to agitate and roll the workpiece, so that the workpiece can better contact the atmosphere gas and ensure good working results.

Claims

1. A workpiece screw lifting type heat treatment nitriding furnace, characterized in that: The furnace includes a nitriding furnace body (1), which includes a furnace body (2) and a furnace cover (3) movably mounted on the furnace body (2). A mounting shell (4) is installed on the outer surface of the furnace body (2), and the mounting shell (4) is connected to the furnace body (2). A motor (5) is fixedly mounted on the upper surface of the mounting shell (4). A threaded rod (6) is rotatably mounted inside the mounting shell (4). The output shaft of the motor (5) is fixedly connected to the end of the threaded rod (6). A threaded plate (7) is threaded onto the outer surface of the threaded rod (6). A support plate (8) is fixedly installed on the side. The support plate (8) is slidably set on the inner wall of the furnace body (2). A workpiece placement mesh cylinder (9) is detachably installed on the upper surface of the support plate (8). A fixing column (10) is fixedly installed on the lower surface of the furnace cover (3). A top cover plate (11) is fixedly installed at the bottom end of the fixing column (10). The top cover plate (11) is attached to the upper surface of the workpiece placement mesh cylinder (9). A motor (17) is fixedly installed on the upper surface of the top cover plate (11). Several actuating blades (12) are arranged below the top cover plate (11).

2. The workpiece screw lifting heat treatment nitriding furnace according to claim 1, characterized in that: The inner wall of the mounting shell (4) is fixed with several guide strips (13), and the side of the threaded plate (7) is provided with several guide grooves. The guide strips (13) are slidably engaged with the guide grooves.

3. The workpiece screw lifting heat treatment nitriding furnace according to claim 1, characterized in that: The inner wall of the furnace body (2) is fixedly installed with several limiting strips (20), and several limiting grooves are opened on the bearing plate (8). The limiting strips (20) are slidably installed on the inner wall of the limiting grooves.

4. The workpiece screw lifting heat treatment nitriding furnace according to claim 1, characterized in that: A number of fixing rods (14) are fixedly installed on the upper surface of the bearing plate (8), and a number of fixing sleeves (15) are fixedly installed on the outer surface of the workpiece placement mesh cylinder (9). The fixing sleeves (15) are fitted on the outer surface of the fixing rods (14), and the surface of the fixing rods (14) has threads and a fixing nut (16) is threaded on it. The fixing nut (16) is fitted and arranged on the surface of the fixing sleeve (15).

5. The workpiece screw lifting heat treatment nitriding furnace according to claim 1, characterized in that: The upper surface of the workpiece placement mesh tube (9) is provided with several alignment grooves, and the lower surface of the top cover plate (11) is fixedly installed with several alignment rods (19), which are used in conjunction with the alignment grooves.

6. The workpiece screw lifting heat treatment nitriding furnace according to claim 1, characterized in that: The upper surface of the top cover plate (11) is fixedly installed with a second motor (17), the output shaft of the second motor (17) is fixedly installed with a rotating shaft (18), and the agitator blade (12) is fixedly installed on the outer surface of the rotating shaft (18).

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