A compound heat treatment device for a nitriding furnace

Abstract

This utility model discloses a composite heat treatment device for a nitriding furnace, including a base plate. A carbonitriding furnace body is fixedly installed on one side of the top outer wall of the base plate. A conveying assembly is installed on the top of the base plate, and the conveying assembly is positioned facing the opening of the carbonitriding furnace body. The conveying assembly includes two extension plates fixedly connected to the top outer wall of the base plate. The two extension plates are jointly fixedly connected to two parallel limiting rods. The two limiting rods are slidably fitted with the same support seat. An installation column is fixedly connected to the outer wall of the support seat, and a horizontally arranged installation seat is rotatably connected to the outside of the installation column. The conveying assembly also includes a driving structure. By setting up the conveying assembly, this utility model enables the two holding assemblies to be used alternately, thereby allowing the removal and repositioning of another batch of completed workpieces during the processing of one batch of workpieces.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, specifically to a nitriding furnace composite heat treatment device. Background Technology

[0002] Gas nitriding is a process in which the workpiece is placed in a gaseous environment containing active nitrogen atoms, such as a mixture of nitrogen and hydrogen produced by the decomposition of ammonia. At a certain temperature, the nitrogen atoms diffuse into the metal surface to form a nitride layer. In the field of nitriding, composite heat treatment technology usually combines nitriding with other surface treatment processes, such as carburizing, quenching, tempering, and shot peening, to form a new type of heat treatment process system.

[0003] A search revealed a utility model patent with Chinese patent publication number CN218115565U, which discloses a furnace box, a gas guide cylinder, a column, a fan, and a turntable. One end of the gas guide cylinder is fixedly connected to the top of the furnace box, and the other end extends into the furnace box. The gas guide cylinder is also connected to multiple inlet gas pipes. The column is mounted inside the furnace box using bearing seats. The fan and turntable are both fixedly connected to the column, arranged sequentially from top to bottom, with the fan housed within the gas guide cylinder. Using this utility model's technical solution, the workpiece is suspended from the turntable by a rope.

[0004] As with the carbonitriding furnace mentioned above, after completing the work, the workpiece needs to be removed from the hoisting rope in one go, and then it needs to be reloaded. This process takes a long time and will affect the processing efficiency, so there is room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a nitriding furnace composite heat treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nitriding furnace composite heat treatment device, comprising a base plate, a carbonitriding furnace body fixedly installed on one side of the top outer wall of the base plate, a conveying assembly installed on the top of the base plate, the conveying assembly being positioned directly opposite the opening of the carbonitriding furnace body, the conveying assembly comprising two extension plates fixedly connected to the top outer wall of the base plate, the two extension plates being jointly fixedly connected to two parallel limiting rods, the two limiting rods being slidably fitted with the same support seat, the outer wall of the support seat being fixedly connected to an installation column, and a horizontally arranged installation seat being rotatably connected to the outside of the installation column, the conveying assembly further comprising a drive structure, the drive structure comprising a lead screw, a first motor, an incomplete gear ring, a second motor, and a first gear.

[0007] As a further preferred embodiment of this technical solution, the lead screw is rotatably connected between two extension plates, the lead screw is threadedly connected inside the support base, the first motor is fixedly installed on the outer wall of one side of the extension plate, the output end of the first motor is coaxially fixed with one end of the lead screw, the incomplete gear ring is fixedly sleeved on the outer circumference of the mounting base, the second motor is fixedly installed on the top outer wall of the support base, the gear is coaxially fixed on the top of the output end of the second motor, and the first gear meshes with the incomplete gear ring.

[0008] This system allows for the alternating use of two holding components, enabling the removal and repositioning of a new batch of completed workpieces while processing a batch. After one batch of workpieces inside the carbonitriding furnace body has finished its work, a motor on the outside of an extension plate is activated. Motor 1 drives a lead screw to rotate, which in turn moves the threaded support along a limit rod away from the carbonitriding furnace body until the support frame inside the furnace body is completely removed. Then, motor 2 is activated, driving gear 1 to rotate. Gear 1, through meshing, drives an incomplete gear ring and its connected mounting base to rotate a quarter turn. The side support frame and the newly placed workpiece will then be facing the carbonitriding furnace body, while the support frame that was originally facing the furnace body will move to the side. Finally, by controlling motor 1 to drive the support frame back towards the furnace body, work can begin immediately. The moved-out workpieces can be cooled, inspected, and processed according to a predetermined process flow during the work process.

[0009] As a further preferred embodiment of this technical solution, two holding components are installed on the top of the support base. The two holding components are arranged vertically. Each holding component includes a furnace door fixedly connected to the outer wall of the top of the support base, and the furnace door is adapted to the opening on the side of the carbonitriding furnace body. A horizontally arranged support frame is fixedly connected to the lower part of the outer wall of one side of the furnace door. Two vertically arranged mounting shafts are rotatably connected to the outer wall of the top of the support frame. Two horizontally arranged receiving mesh trays and limiting mesh trays are coaxially fixed to the outer walls of the circumferences of the two mounting shafts. The two limiting mesh trays are respectively located above the two receiving mesh trays.

[0010] As a further preferred embodiment of this technical solution, a driven bevel gear is coaxially fixed at one end of each of the two mounting shafts. A motor is mounted on the inner wall of the top of the support frame via a fixed bracket. A transmission rod is coaxially fixed at the output end of the motor. The end of the transmission rod away from the motor is rotatably connected to the inner wall of one side of the support frame. Two transmission bevel gears are coaxially fixed to the outside of the transmission rod, and the two transmission bevel gears mesh with two driven bevel gears respectively.

[0011] The motor inside the support frame is started, which drives the transmission rod to rotate. The bevel gears on the outside of the transmission rod mesh with each other, driving two driven bevel gears to rotate. The two driven bevel gears drive two mounting shafts to rotate respectively. The workpiece at the top of the receiving tray will then revolve around the mounting shafts at a uniform speed, resulting in a more uniform processing effect.

[0012] As a further preferred embodiment of this technical solution, two mounting grooves are provided on the outer walls of both ends of the support base, and a vertically arranged roller is rotatably connected to the inner wall of the two mounting grooves that are close to each other, and all four rollers are in contact with the top wall of the base plate.

[0013] As a further preferred embodiment of this technical solution, the second motor is a servo motor.

[0014] As a further preferred embodiment of this technical solution, the upper part of the support frame and the furnace door are both made of refractory bricks.

[0015] As a further preferred embodiment of this technical solution, a through hole is provided inside the furnace door, and the through hole communicates with the internal space of the support frame.

[0016] This utility model provides a nitriding furnace composite heat treatment device, which has the following beneficial effects:

[0017] (1) By setting up a conveying component, this utility model enables two holding components to be used alternately, so that during the processing of one batch of workpieces, another batch of completed workpieces can be picked up and new workpieces can be placed. After a batch of workpieces inside the carbonitriding furnace body has finished working, a motor 1 on the outside of an extension plate is started. Motor 1 drives the lead screw to rotate, and the lead screw can drive the support seat connected to it along the limit rod away from the carbonitriding furnace body until the support frame inside the carbonitriding furnace body is completely away from the carbonitriding furnace body. Motor 2 is started to drive gear 1 to rotate. Gear 1 drives the incomplete gear ring and the mounting seat connected to it to rotate a quarter turn through meshing. The side support frame and the newly placed workpiece will then face the carbonitriding furnace body. The support frame that was originally facing the carbonitriding furnace body will move to the side. Finally, by controlling motor 1 to drive the support seat to approach the carbonitriding furnace body again, work can start immediately. The moved workpieces can be cooled, inspected, etc. during the working process according to the predetermined process flow.

[0018] (2) By setting up a holding component, the three motors inside the support frame are started. The three motors drive the transmission rod to rotate. The bevel gears outside the transmission rod drive the two driven bevel gears to rotate through meshing. The two driven bevel gears drive the two mounting shafts to rotate respectively. The workpiece at the top of the receiving tray will rotate around the mounting shaft at a uniform speed, making the processing effect more uniform. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0021] Figure 3 This is an enlarged structural diagram of the holding component of this utility model;

[0022] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0023] In the diagram: 1. Base plate; 2. Carbonitriding furnace body; 3. Conveying assembly; 4. Container assembly; 301. Extension plate; 302. Lead screw; 303. Limiting rod; 304. Motor 1; 305. Support base; 306. Mounting base; 307. Incomplete gear ring; 308. Motor 2; 309. Gear 1; 310. Roller; 401. Furnace door; 402. Support frame; 403. Mounting shaft; 404. Receiving mesh tray; 405. Limiting mesh tray; 406. Driven bevel gear; 407. Transmission rod; 408. Motor 3; 409. Through hole. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, a nitriding furnace composite heat treatment device includes a base plate 1. A carbonitriding furnace body 2 (box-type carbonitriding furnace, RX series box-type furnace, preferably RX-3-9, which is existing technology, with internal structure improvements, details are not described in detail here) is fixedly installed on one side of the top outer wall of the base plate 1. A conveying assembly 3 is installed on the top of the base plate 1. The conveying assembly 3 is set facing the opening direction of the carbonitriding furnace body 2. The conveying assembly 3 includes two extension plates 301 fixedly connected to the top outer wall of the base plate 1. The two extension plates 301 are jointly fixedly connected to two parallel limiting rods 303. The two limiting rods 303 are slidably sleeved on the same support seat 305. The outer wall of the support seat 305 is fixedly connected to a mounting column, and a horizontally set mounting seat 306 is rotatably connected to the outside of the mounting column. The conveying assembly 3 also includes a drive structure, which includes a lead screw 302, a first motor 304, an incomplete gear ring 307, a second motor 308, and a first gear 309.

[0026] The lead screw 302 is rotatably connected between two extension plates 301. The lead screw 302 is threadedly connected inside the support base 305. Motor 1 304 is fixedly installed on the outer wall of one side of the extension plate 301. The output end of motor 1 304 is coaxially fixed with one end of the lead screw 302. The incomplete gear ring 307 is fixedly sleeved on the outer circumference of the mounting base 306. Motor 2 308 is fixedly installed on the top outer wall of the support base 305. Gear 1 309 is coaxially fixed on the top of the output end of motor 2 308. Gear 1 309 meshes with the incomplete gear ring 307.

[0027] After a batch of workpieces inside the carbonitriding furnace body 2 has finished working, a motor 304 on the outside of an extension plate 301 is started. The motor 304 drives the lead screw 302 to rotate, which in turn drives the support seat 305, which is threaded to it, to move away from the carbonitriding furnace body 2 along the limit rod 303. This continues until the support frame 402 inside the carbonitriding furnace body 2 is completely removed from the carbonitriding furnace body 2. Then, a motor 308 is started to drive the gear 309 to rotate. The gear 309, through meshing, drives the incomplete gear ring 307 and the mounting seat 306 connected to it to rotate a quarter turn. The side support frame 402 and the newly placed workpiece will then be facing the carbonitriding furnace body 2. The support frame 402, which was originally facing the carbonitriding furnace body 2, will move to the side. Finally, by controlling the motor 304 to drive the support seat 305 to move closer to the carbonitriding furnace body 2 again, work can begin immediately. The moved workpieces can be cooled, inspected, and processed according to the predetermined process flow during the work process.

[0028] like Figure 2 and Figure 3 As shown, two holding components 4 are installed on the top of the support base 305. The two holding components 4 are arranged vertically. The holding components 4 include a furnace door 401 fixedly connected to the outer wall of the top of the support base 305. The furnace door 401 is adapted to the opening on the side of the carbonitriding furnace body 2. A horizontally arranged support frame 402 is fixedly connected to the lower part of the outer wall of one side of the furnace door 401. Two vertically arranged mounting shafts 403 are rotatably connected to the top outer wall of the support frame 402. Two horizontally arranged receiving mesh trays 404 and limiting mesh trays 405 are coaxially fixed on the outer circumference of the two mounting shafts 403. The two limiting mesh trays 405 are respectively located above the two receiving mesh trays 404.

[0029] Two driven bevel gears 406 are coaxially fixed at one end of the bottom of each of the two mounting shafts 403. A motor 408 is mounted on the inner wall of the top of the support frame 402 through a fixed bracket. A transmission rod 407 is coaxially fixed at the output end of the motor 408. The end of the transmission rod 407 away from the motor 408 is rotatably connected to the inner wall of one side of the support frame 402. Two transmission bevel gears are coaxially fixed on the outside of the transmission rod 407, and the two transmission bevel gears mesh with the two driven bevel gears 406 respectively.

[0030] During processing, the motor 408 inside the support frame 402 is activated. The motor 408 drives the transmission rod 407 to rotate. The bevel gears outside the transmission rod 407 mesh to drive the two driven bevel gears 406 to rotate. The two driven bevel gears 406 drive the two mounting shafts 403 to rotate respectively. The workpiece at the top of the receiving tray 404 will revolve around the mounting shaft 403 at a uniform speed, making the processing effect more uniform.

[0031] like Figure 1 As shown, the outer walls at both ends of the support base 305 have two mounting slots, and the inner walls at the ends of the two mounting slots that are close to each other are rotatably connected to a vertically arranged roller 310. All four rollers 310 are in contact with the top wall of the base plate 1, making the driving process of the support base 305 easier.

[0032] like Figure 4 As shown, motor 2 308 uses a servo motor, which makes the rotation angle of mounting base 306 more precise.

[0033] like Figure 2 and Figure 3 As shown, the upper part of the support frame 402 and the furnace door 401 are both made of refractory bricks, which can prevent damage to both and prevent heat from escaping.

[0034] like Figure 1 As shown, a through hole 409 is provided inside the furnace door 401, and the through hole 409 is connected to the internal space of the support frame 402.

[0035] This utility model provides a nitriding furnace composite heat treatment device, the specific working principle of which is as follows:

[0036] When the device is working, after a batch of workpieces inside the carbonitriding furnace body 2 has finished their work, a motor 304 on the outside of an extension plate 301 is started. The motor 304 drives the lead screw 302 to rotate, which in turn drives the support seat 305, which is threaded to it, to move away from the carbonitriding furnace body 2 along the limit rod 303 until the support frame 402 inside the carbonitriding furnace body 2 is completely away from the carbonitriding furnace body 2. Then, a motor 308 is started to drive the gear 309 to rotate. The gear 309 drives the incomplete gear ring 307 and the mounting seat 306 connected to it to rotate a quarter turn through meshing. The side support frame 402 and the newly placed workpiece will then be facing the carbonitriding furnace body 2. The support frame 402, which was originally facing the carbonitriding furnace body 2, will move to the side. Finally, by controlling the motor 304 to drive the support seat 305 to move closer to the carbonitriding furnace body 2 again, the work can start immediately. The moved workpieces can be cooled, inspected, and processed according to the predetermined process flow during the work process.

[0037] During processing, the motor 408 inside the support frame 402 is activated. The motor 408 drives the transmission rod 407 to rotate. The bevel gears outside the transmission rod 407 mesh to drive the two driven bevel gears 406 to rotate. The two driven bevel gears 406 drive the two mounting shafts 403 to rotate respectively. The workpiece at the top of the receiving tray 404 will revolve around the mounting shaft 403 at a uniform speed, making the processing effect more uniform.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nitriding furnace composite heat treatment device, comprising a base plate (1), characterized in that: A carbonitriding furnace body (2) is fixedly installed on one side of the top outer wall of the base plate (1). A conveying assembly (3) is installed on the top of the base plate (1). The conveying assembly (3) is set facing the opening direction of the carbonitriding furnace body (2). The conveying assembly (3) includes two extension plates (301) fixedly connected to the top outer wall of the base plate (1). The two extension plates (301) are fixedly connected to two parallel limiting rods (303). The two limiting rods (303) are slidably sleeved on the same support seat (305). The support seat (305) is fixedly connected to an installation column on its outer wall. A horizontally set installation seat (306) is rotatably connected to the outside of the installation column. The conveying assembly (3) also includes a driving structure. The driving structure includes a lead screw (302), a motor one (304), an incomplete gear ring (307), a motor two (308), and a gear one (309).

2. The nitriding furnace composite heat treatment device according to claim 1, characterized in that: The lead screw (302) is rotatably connected between two extension plates (301). The lead screw (302) is threadedly connected inside the support base (305). The first motor (304) is fixedly installed on the outer wall of one side of the extension plate (301). The output end of the first motor (304) is coaxially fixed with one end of the lead screw (302). The incomplete gear ring (307) is fixedly sleeved on the outer circumference of the mounting base (306). The second motor (308) is fixedly installed on the top outer wall of the support base (305). The first gear (309) is coaxially fixed on the top of the output end of the second motor (308). The first gear (309) meshes with the incomplete gear ring (307).

3. The nitriding furnace composite heat treatment device according to claim 1, characterized in that: Two holding components (4) are installed on the top of the support base (305). The two holding components (4) are arranged vertically. Each holding component (4) includes a furnace door (401) fixedly connected to the outer wall of the top of the support base (305). The furnace door (401) is adapted to the opening on the side of the carbonitriding furnace body (2). A horizontally arranged support frame (402) is fixedly connected to the lower part of the outer wall of one side of the furnace door (401). Two vertically arranged mounting shafts (403) are rotatably connected to the outer wall of the top of the support frame (402). Two horizontally arranged receiving mesh trays (404) and limiting mesh trays (405) are coaxially fixed on the outer walls of the circumference of the two mounting shafts (403). The two limiting mesh trays (405) are respectively located above the two receiving mesh trays (404).

4. The nitriding furnace composite heat treatment device according to claim 3, characterized in that: Each of the two mounting shafts (403) has a driven bevel gear (406) coaxially fixed at one end of its bottom. The support frame (402) has a motor (408) mounted on its top inner wall via a fixed bracket. The output end of the motor (408) has a transmission rod (407) coaxially fixed. The end of the transmission rod (407) away from the motor (408) is rotatably connected to the inner wall of the support frame (402). Two transmission bevel gears are coaxially fixed to the outside of the transmission rod (407), and the two transmission bevel gears mesh with the two driven bevel gears (406) respectively.

5. The nitriding furnace composite heat treatment device according to claim 1, characterized in that: The support base (305) has two mounting slots on its outer walls at both ends, and a vertically arranged roller (310) is rotatably connected to the inner wall of the two mounting slots that are close to each other, and all four rollers (310) are in contact with the top wall of the base plate (1).

6. The nitriding furnace composite heat treatment device according to claim 1, characterized in that: The second motor (308) is a servo motor.

7. The nitriding furnace composite heat treatment device according to claim 4, characterized in that: The upper part of the support frame (402) and the furnace door (401) are both made of refractory bricks.

8. The nitriding furnace composite heat treatment device according to claim 4, characterized in that: The furnace door (401) has a through hole (409) inside, and the through hole (409) is connected to the internal space of the support frame (402).

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