Tempering device for spring surface nitriding treatment

Abstract

The invention relates to the technical field of spring manufacturing, in particular to a tempering device for spring surface nitriding treatment, which comprises a bottom frame, a tempering bin, a conveying assembly, a sliding bracket and a loading assembly, a sliding groove plate and an arc-shaped sliding rail are arranged at the top of the sliding support, a rotating wheel of the material carrying assembly rolls in the arc-shaped sliding rail, and the material carrying assembly is provided with a cylindrical material carrying net basket, a six-edge sleeve, a driving transmission rod and a connecting mother disc. A built-in sliding rail, a heating element, a temperature sensor and a connector are arranged in the tempering bin, the connector can be in automatic butt joint with the connecting mother disc and drive the material carrying assembly to rotate, and the tempering bin can also achieve switching of the nitrogen atmosphere; the conveying assembly drives the loader and unloader through the power assembly, and automatic loading and unloading of the sliding support are achieved. The spring tempering device can realize uniform spring tempering, avoids oxidation of a nitriding layer, reduces the labor intensity of operators and potential safety hazards, and improves the tempering efficiency and the spring quality.

Description

Technical Field

[0001] This invention belongs to the field of spring manufacturing technology, and in particular relates to a tempering device for nitriding treatment of spring surfaces. Background Technology

[0002] Springs are widely used as basic components in many fields such as machinery, automobiles, and electronics. In industrial production, in order to improve the surface hardness, wear resistance, and corrosion resistance of springs, surface nitriding treatment is often performed on springs. After nitriding treatment, tempering process is required to eliminate internal stress of the spring, stabilize its properties, and avoid failure problems such as deformation and breakage during use.

[0003] Currently, most spring tempering devices in existing technologies use a static loading method, which leads to uneven heating of the springs during tempering and easily results in insufficient tempering in some areas. This, in turn, causes uneven performance of the nitrided layer of the spring, affecting the overall quality of the spring. Furthermore, if the nitrided springs are exposed to air during tempering, the surface nitrided layer is prone to oxidation, peeling, and denitrification, which damages the protective function of the nitrided layer and reduces the corrosion resistance and surface hardness of the spring. At the same time, the loading and unloading process mostly relies on manual operation. Operators need to approach the high-temperature tempering chamber to push and pull the loading structure, which is not only labor-intensive but also poses safety hazards such as burns. The loading and unloading efficiency is also relatively low.

[0004] To address these issues, we provide a tempering apparatus for nitriding spring surfaces. Summary of the Invention

[0005] The purpose of this invention is to provide a tempering device for nitriding treatment of spring surfaces. It achieves automated loading and unloading through the cooperation of a sliding bracket and a conveying component. The rotational design of the loading component ensures uniform heating of the springs. Combined with the nitrogen atmosphere control of the tempering chamber, it avoids oxidation of the nitrided layer. This solves the problems of uneven heating, easy damage to the nitrided layer, inconvenient loading and unloading, and safety hazards in existing spring tempering devices.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a tempering device for nitriding treatment of spring surface, including a sliding bracket, including a rectangular bearing frame, two parallel sliding groove plates fixedly connected to the top of the bearing frame, two symmetrically distributed arc-shaped slide rails fixedly connected to the top of the bearing frame, and a traction drag ring fixedly connected to the center of one side of the bearing frame. The material loading assembly includes two symmetrical rotating wheels that roll within corresponding arc-shaped slide rails. A cylindrical material loading basket is fixedly connected between the two rotating wheels. An arc-shaped discharge mesh plate is rotatably connected to the opening of the cylindrical material loading basket. A hexagonal sleeve and a drive transmission rod are fixedly connected to the center of the opposite sides of the two rotating wheels, respectively. A connecting mother plate is fixedly connected to the free end of the drive transmission rod. Several connecting grooves are equidistantly formed along the circumference on the side of the connecting mother plate opposite to the drive transmission rod. A tempering chamber includes a chamber body. A chamber door is rotatably connected to the front of the chamber body. Inside the chamber door is a connector for connecting to a connecting female disc and driving the rotation of a material-carrying assembly. A rotary motor for driving the connector is fixedly connected to the outside of the chamber door. Two parallel internal slide rails are fixedly connected to the bottom of the chamber body's inner cavity, and a sliding groove plate is adapted to the internal slide rails. A hexagonal transmission rod adapted to a hexagonal sleeve is rotatably connected to the back of the chamber body. The conveying assembly includes a fixed bracket, the top of which is fixedly connected to two external slide rails that are respectively connected to the two built-in slide rails. The fixed bracket is equipped with a power assembly, and the power assembly is equipped with a loading / unloading device for pushing and pulling the sliding bracket to complete the loading and unloading actions.

[0007] The invention is further configured such that two connecting pipes are fixedly connected to both sides of the chamber, and high-temperature resistant valves are installed at the free ends of the two connecting pipes. The two high-temperature resistant valves are respectively used to connect the nitrogen inlet pipe and the exhaust pipe to maintain a nitrogen atmosphere in the tempering chamber.

[0008] The invention is further configured such that a mounting base is fixedly connected to the top of the silo body, a fixed connecting frame is fixedly connected to the outside of the silo door, a hydraulic rod for pressing the silo door is rotatably connected inside the mounting base, and the fixed connecting frame is rotatably connected to the output end of the hydraulic rod, and a sealing ring is fixedly embedded on the inner side of the silo door.

[0009] The present invention is further configured such that the connector includes a connecting rod rotatably connected to the inside of the compartment door, and the connecting rod is fixedly connected to the output end of the rotating motor. A guide slide is provided at one end of the connecting rod located inside the compartment. A sliding guide rod is slidably connected inside the guide slide. A connecting plate is fixedly connected to the free end of the sliding guide rod. A plurality of connecting protrusions adapted to the connecting grooves are fixedly connected circumferentially at equal intervals on the side of the connecting plate facing the connecting mother plate. A high-temperature resistant buffer spring for pushing the sliding guide rod is installed inside the guide slide, so as to realize the automatic docking of the connecting protrusions and the connecting grooves.

[0010] The invention is further configured such that the inner wall of the tempering chamber is equipped with a plurality of heating elements for increasing the internal temperature of the tempering chamber, and the top of the inner wall of the tempering chamber is equipped with a temperature sensor for monitoring the internal temperature of the tempering chamber.

[0011] The present invention is further configured such that the power assembly includes a drive rotating shaft and a driven rotating shaft rotatably connected inside the fixed bracket, a drive sprocket and a driven sprocket are respectively fixedly connected to the outside of the drive rotating shaft and the driven rotating shaft, a transmission chain is installed on the outside of the drive sprocket and the driven sprocket, a power motor is fixedly connected to one side of the fixed bracket, and the drive rotating shaft is fixedly connected to the output end of the power motor.

[0012] The invention is further configured such that the loading / unloading device includes a movable slider fixedly connected to the outside of the transmission chain, four vertically sliding limiting rods are slidably connected inside the movable slider, and wedge-shaped mounting blocks with inclined surfaces facing away from the bin body are fixedly connected to the top of the four limiting rods. A top pull rod for pushing and pulling the sliding bracket is fixedly connected to the side of the mounting block facing the bin body. A rotating rod is rotatably connected to the free end of the top pull rod, and the top pull rod limits the downward rotation of the rotating rod. A traction hook for hooking a traction drag ring is fixedly connected to the bottom surface of the rotating rod near the free end. A return spring is assembled between the wedge-shaped mounting block and the movable slider.

[0013] The present invention is further configured such that a guide rod is fixedly connected inside the fixed bracket, and the movable slider is slidably connected to the outside of the guide rod to ensure the movement stability of the movable slider.

[0014] The invention is further configured such that a plurality of connecting rods for strengthening the overall strength are fixedly connected between the two rotating wheels, and a lifting ring is fixedly connected at the center of one of the connecting rods, with the lifting ring facing the center when the discharge mesh plate is closed. When the discharge mesh plate is closed, it is connected to the outside of the cylindrical material carrying basket through a pin structure. A plurality of partition mesh plates parallel to the end face of the cylindrical material carrying basket are fixedly connected inside the cylindrical material carrying basket.

[0015] The invention is further configured to include a base frame, wherein the chamber body and the fixed bracket are both fixedly connected to the top of the base frame, and a main control box for controlling the operation of the electrical equipment of the entire device is also fixedly connected to the top of the base frame.

[0016] The present invention has the following beneficial effects: 1. This invention, through the adaptation of the sliding bracket and the built-in slide rail of the tempering chamber, and the rotation design of the material loading component, can achieve stable loading and unloading and uniform heating during the spring tempering process, effectively avoid insufficient local tempering, and improve the tempering quality of the spring after nitriding treatment.

[0017] 2. This invention introduces nitrogen gas into the tempering chamber, allowing the nitrided spring to undergo tempering in a nitrogen atmosphere, thereby preventing oxidation, peeling, and denitrification of the nitrided layer surface and ensuring the surface performance and dimensional stability of the spring.

[0018] 3. By setting a power component and a loading / unloading device inside the fixed bracket, the present invention can automate the loading and unloading action of the sliding bracket, eliminating the need for manual pushing and pulling. This reduces the labor intensity of operators, avoids safety hazards such as burns caused by operators approaching the high-temperature tempering chamber, and speeds up the loading and unloading process, thereby improving the efficiency of the entire tempering operation.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the tempering chamber in the open state of the present invention.

[0022] Figure 2 This is a schematic diagram of the tempering chamber in the closed state of the present invention.

[0023] Figure 3 This is a schematic diagram of the tempering chamber of the present invention.

[0024] Figure 4 This is a schematic diagram of the conveying assembly of the present invention.

[0025] Figure 5 This is a schematic diagram of the sliding bracket of the present invention.

[0026] Figure 6 This is a schematic diagram of the material loading assembly of the present invention.

[0027] Figure 7 This is a schematic cross-sectional view of the present invention.

[0028] Figure 8 for Figure 1 A magnified structural diagram of point A in the middle.

[0029] Figure 9 for Figure 4 A magnified structural diagram at point B in the middle.

[0030] Figure 10 for Figure 4A magnified structural diagram at point C.

[0031] Figure 11 for Figure 7 A magnified structural diagram at point D.

[0032] The attached diagram lists the components represented by each number as follows: 100. Base frame; 200. Tempering chamber; 201. Chamber body; 202. Chamber door; 204. Hexagonal transmission rod; 205. Connecting rod; 206. Guide slide; 207. Sliding guide rod; 208. High-temperature resistant buffer spring; 209. Connecting plate; 209a. Connecting protrusion; 210. Rotary motor; 211. Built-in slide rail; 212. Heating element; 213. Connecting pipe; 214. High-temperature resistant valve; 215. Fixed connecting frame; 216. Mounting base; 217. Hydraulic rod; 218. Temperature sensor; 300. Conveying assembly; 301. Fixed bracket; 302. External slide rail; 303. Guide support rod; 304. Moving slider; 305. Limiting rod; 306. Installation. 307. Top pull rod; 308. Rotating rod; 309. Traction hook; 310. Return spring; 311. Drive rotating shaft; 312. Driven rotating shaft; 313. Drive sprocket; 314. Driven sprocket; 315. Transmission chain; 316. Power motor; 400. Sliding bracket; 401. Bearing frame; 402. Sliding groove plate; 403. Arc-shaped slide rail; 404. Traction drag ring; 500. Material loading assembly; 501. Rotating wheel; 502. Connecting rod; 503. Cylindrical material loading basket; 504. Discharge mesh plate; 505. Lifting ring; 506. Hexagonal sleeve; 507. Drive transmission rod; 508. Connecting mother plate; 508a. Connecting groove; 600. Main control box. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1, referring to Figures 1 to 8 , Figure 10 and Figure 11This is the first embodiment of the present invention. This embodiment provides a tempering device for nitriding treatment of spring surfaces, including a sliding bracket 400 and a rectangular support frame 401. The top of the support frame 401 is fixedly connected to two parallel sliding groove plates 402. The two parallel sliding groove plates 402 can be adapted to the built-in slide rails 211 of the tempering chamber 200, so that the sliding bracket 400 can drive the material loading assembly 500 to smoothly enter and exit the tempering chamber 200. The top of the support frame 401 is fixedly connected to two symmetrically distributed arc-shaped slide rails 403. The symmetrically distributed arc-shaped slide rails 403 can limit and guide the rotating wheel 501, so that the rotating wheel 501 can roll stably, thereby allowing the material loading basket 503 to rotate smoothly. A traction drag ring 404 is fixedly connected to the center of one side of the support frame 401. The traction drag ring 404 is easy to hook onto the external traction structure, making it convenient to pull the sliding bracket 400 to complete the loading and unloading actions. The material loading assembly 500 includes two symmetrical rotating wheels 501, which roll within corresponding arc-shaped slide rails 403. A cylindrical material loading basket 503 is fixedly connected between the two rotating wheels 501. The rolling of the rotating wheels 501 within the arc-shaped slide rails 403 drives the cylindrical material loading basket 503 to rotate synchronously, ensuring uniform heating of the springs within the basket and preventing insufficient localized tempering, thus improving the tempering quality after nitriding. An arc-shaped discharge mesh plate 504 is rotatably connected to the opening of the cylindrical material loading basket 503. The arc-shaped discharge mesh plate 504 rotatably connects to the opening of the basket, facilitating the insertion and removal of springs and limiting their movement when closed, preventing spring damage. During rotation, the material falls out of the basket. The two rotating wheels 501 are fixedly connected to the center of their opposite sides with hexagonal sleeves 506 and drive transmission rods 507 respectively. The hexagonal sleeves 506 and hexagonal transmission rods 204 are plugged into each other and can position and limit the side of the material loading assembly 500 away from the drive end, ensuring the coaxiality of the material loading assembly 500 when rotating and avoiding shaking. The free end of the drive transmission rod 507 is fixedly connected to a connecting mother plate 508. The side of the connecting mother plate 508 opposite to the drive transmission rod 507 is provided with several connecting grooves 508a at equal intervals along the circumference. The connecting grooves 508a on the connecting mother plate 508 can easily mate with the connecting protrusions 209a of the connector to achieve stable power transmission. The tempering chamber 200 includes a chamber body 201. A chamber door 202 is rotatably connected to the front of the chamber body 201. Inside the chamber door 202 is a connector for connecting to a connecting female disc 508 and for driving the material loading assembly 500 to rotate. The connector mates with the connecting female disc 508 to transmit power from the rotating motor 210 to the material loading assembly 500, causing the cylindrical material loading basket 503 to rotate, achieving uniform tempering of the springs. A rotating motor 210 for driving the connector is fixedly connected to the outside of the chamber door 202. 10 provides stable power for the rotation of the material loading assembly 500, and the rotation speed can be adjusted according to the tempering requirements. The bottom of the inner cavity of the bin 201 is fixedly connected to two parallel built-in slide rails 211, and the sliding groove plate 402 is adapted to the built-in slide rails 211. The built-in slide rails 211 and the sliding groove plate 402 are adapted to provide guidance for the movement of the sliding support 400, ensuring that the sliding support 400 smoothly enters the bin 201. The back of the bin 201 is rotatably connected to a hexagonal transmission rod 204 that is adapted to the hexagonal sleeve 506.

[0035] Specifically, both sides of the chamber 201 are fixedly connected to a connecting pipe 213, and the free ends of the two connecting pipes 213 are each equipped with a high-temperature resistant valve 214. The two high-temperature resistant valves 214 are respectively used to connect the nitrogen inlet pipe and the exhaust pipe to maintain a nitrogen atmosphere in the tempering chamber 200, thereby avoiding oxidation and denitrification of the spring nitriding layer and ensuring the surface performance and dimensional stability of the spring. A mounting base 216 is fixedly connected to the top of the chamber body 201, and a fixed connecting frame 215 is fixedly connected to the outside of the chamber door 202. A hydraulic rod 217 for pressing the chamber door 202 is rotatably connected inside the mounting base 216, and the fixed connecting frame 215 is rotatably connected to the output end of the hydraulic rod 217. A sealing ring is fixedly embedded on the inside of the chamber door 202. The hydraulic rod 217 can press the chamber door 202 through the fixed connecting frame 215 to ensure that the chamber door 202 fits tightly with the chamber body 201, improve the sealing performance of the chamber body 201, prevent heat and nitrogen leakage inside the chamber, and ensure a stable tempering environment. The inner wall of the tempering chamber 200 is equipped with several heating elements 212 for raising the internal temperature of the tempering chamber 200. The top of the inner wall of the tempering chamber 200 is equipped with a temperature sensor 218 for monitoring the internal temperature of the tempering chamber 200. The temperature sensor 218 can monitor the temperature inside the chamber in real time, so that the operator can keep track of the temperature changes in time and adjust the working status of the heating elements 212 according to the process requirements, thereby improving the stability of the tempering process and the tempering quality of the spring. The connector includes a connecting rod 205 rotatably connected inside the hopper door 202, and the connecting rod 205 is fixedly connected to the output end of the rotating motor 210. The connecting rod 205 can transmit the power of the rotating motor 210 to the sliding guide rod 207 and the connecting plate 209, thereby driving the material loading assembly 500 to rotate. A guide slide 206 is provided at one end of the connecting rod 205 located inside the hopper body 201. The guide slide 206 provides sliding guidance for the sliding guide rod 207 and restricts its rotation, so that the sliding guide rod 207 moves smoothly. The sliding guide rod 207 is slidably connected inside the guide slide 206. The free end of the sliding guide rod 207 is fixedly connected to the connecting plate 209. The side of the connecting plate 209 facing the connecting mother plate 508 is fixedly connected with several equidistant elements along the circumferential direction. The connecting protrusion 209a is adapted to the connecting groove 508a. The guide slide 206 is equipped with a high-temperature resistant buffer spring 208 for pushing the sliding guide rod 207, so that the connecting protrusion 209a and the connecting groove 508a are automatically connected. The high-temperature resistant buffer spring 208 can push the sliding guide rod 207, so that the connecting protrusion 209a on the connecting plate 209 is automatically embedded into the connecting groove 508a of the connecting female plate 508, so that the connector and the connecting female plate 508 are automatically connected. At the same time, the high-temperature resistant buffer spring 208 can absorb the impact force during the connection to avoid damage to the components. The matching of the connecting protrusion 209a and the connecting groove 508a can ensure stable power transmission and prevent slippage, so that the material loading assembly 500 rotates at a uniform speed. Several connecting rods 502 are fixedly connected between the two rotating wheels 501 to enhance the overall strength. The connecting rods 502 strengthen the connection between the two rotating wheels 501, improving the overall rigidity of the material loading assembly 500. A lifting ring 505 is fixedly connected to the center of one of the connecting rods 502, and the lifting ring 505 is directly opposite the center of the discharge mesh plate 504 when closed. The lifting ring 505 facilitates the hoisting of the entire material loading assembly 500 using hoisting equipment after tempering treatment, thereby improving the efficiency of loading and unloading. The discharge mesh plate 504... When closed, it is connected to the outside of the cylindrical material carrying basket 503 by a pin structure. The discharge mesh plate 504 is connected by a pin structure to prevent the spring from falling out of the basket during rotation. It is also easy to disassemble and convenient to take out and put in the spring. The inside of the cylindrical material carrying basket 503 is fixedly connected with multiple partition mesh plates 509 parallel to the end face of the cylindrical material carrying basket 503. The spring is filled between two partition mesh plates 509 at intervals to leave a heating channel. This can prevent the spring from excessive collision during rotation and ensure air circulation. The conveying component 300 includes a fixed bracket 301. The top of the fixed bracket 301 is fixedly connected to two external slide rails 302 that are respectively connected to the two built-in slide rails 211. The external slide rails 302 are connected to the built-in slide rails 211, which can realize the smooth transition of the sliding bracket 400 from the external slide rails 302 to the built-in slide rails 211. It also includes a base frame 100, a compartment 201 and a fixed bracket 301, all of which are fixedly connected to the top of the base frame 100. The top of the base frame 100 is also fixedly connected to a main control box 600 for controlling the operation of the electrical equipment of the entire device.

[0036] The operation process of this embodiment is as follows: When the spring needs to be tempered, first open the discharge mesh plate 504, put the spring that needs to be treated into the cylindrical material carrying basket 503, close the discharge mesh plate 504 and connect it through the pin structure, then push the sliding bracket 400 through the long rod, so that the sliding groove plate 402 of the sliding bracket 400 slides along the external slide rail 302 and smoothly transitions to the internal slide rail 211 of the tempering chamber 200 until the sliding bracket 400 is completely inserted into the chamber body 201; at this time, the hexagonal transmission rod 204 on the back of the chamber body 201 is inserted and matched with the hexagonal sleeve 506 of the material carrying assembly 500, and at the same time, the high temperature buffer spring 208 of the connector pushes the sliding guide rod 207, so that the connecting protrusion 209a on the connecting plate 209 is embedded in the connecting groove 508a of the connecting mother plate 508, and the power docking is completed; Then, the hydraulic rod 217 is activated, and the chamber door 202 is pressed by the fixed connecting frame 215. The sealing ring on the inside of the chamber door 202 ensures the airtightness of the chamber body 201. Then, the nitrogen gas is introduced and the vacuum is extracted by the high temperature valve 214 on the connecting pipe 213 to adjust the internal environment of the tempering chamber 200. The heating element 212 and the rotating motor 210 are activated. The temperature sensor 218 monitors the temperature inside the chamber in real time. The rotating motor 210 drives the material loading assembly 500 to rotate through the connector, so that the spring in the cylindrical material loading basket 503 is heated evenly, and the tempering process is completed. After tempering is completed, turn off the heating element 212 and the rotating motor 210. After the temperature inside the chamber drops to a safe range, release the hydraulic rod 217 to open the chamber door 202. Pull the traction ring 404 to pull the sliding bracket 400 and the material loading assembly 500 out of the tempering chamber 200. Then, use hoisting equipment to hoist the material loading assembly 500 as a whole. After that, open the pin structure on the discharge mesh plate 504 and open the discharge mesh plate 504 to take out the tempered spring.

[0037] Example 2, refer to Figure 1 , Figure 4 , Figure 9 and Figure 10 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the automation level of loading and unloading is further improved, so that there is no need for manual pushing and pulling of the sliding bracket 400. This reduces the labor intensity of the operators and avoids the operators from approaching the high-temperature tempering chamber 200, reducing safety hazards such as burns. At the same time, it speeds up the loading and unloading speed and improves the efficiency of the entire tempering operation.

[0038] Specifically, the fixed bracket 301 is equipped with a power component, which provides stable power to the loading and unloading device to ensure that the loading and unloading device can smoothly push or pull out the sliding bracket 400, thereby automating the loading and unloading action. The power component is equipped with a loading and unloading device for pushing and pulling out the sliding bracket 400 to complete the loading and unloading action. The loading and unloading device can push and pull the sliding bracket 400 to improve the efficiency of loading and unloading while reducing manual intervention. The power assembly includes a drive shaft 311 and a driven shaft 312 rotatably connected inside the fixed bracket 301. A drive sprocket 313 and a driven sprocket 314 are respectively fixedly connected to the outside of the drive shaft 311 and the driven shaft 312. A transmission chain 315 is installed on the outside of the drive sprocket 313 and the driven sprocket 314. A power motor 316 is fixedly connected to one side of the fixed bracket 301, and the drive shaft 311 is fixedly connected to the output end of the power motor 316. The drive sprocket 313, the driven sprocket 314 and the transmission chain 315 cooperate to achieve high transmission efficiency and good stability, which can ensure that the loading and unloading device moves at a uniform speed and avoid impact when the sliding bracket 400 moves. The loading / unloading device includes a movable slider 304 fixedly connected to the outside of the transmission chain 315. The movable slider 304 moves synchronously with the transmission chain 315, driving the entire loading / unloading device to move, thereby pushing and pulling the sliding bracket 400. Four vertically sliding limit rods 305 are slidably connected inside the movable slider 304. These four limit rods 305 limit the mounting block 306, ensuring that the mounting block 306 can only slide vertically. A wedge-shaped mounting block 306 with an inclined surface facing away from the bin body 201 is fixedly connected to the top of the four limit rods 305. A top pull rod 307 for pushing and pulling the sliding bracket 400 is fixedly connected to the side of the mounting block 306 facing the bin body 201. The free end of the sliding bracket 400 is rotatably connected to a rotating rod 308. A top pull rod 307 limits the downward rotation of the rotating rod 308. The top pull rod 307 can transmit thrust and pull forces to drive the sliding bracket 400 to move. The downward rotation limit of the top pull rod 307 on the rotating rod 308 can prevent the sliding bracket 400 from bending. A traction hook 309 for hooking the traction drag ring 404 is fixedly connected to the bottom surface of the rotating rod 308 near the free end. The traction hook 309 can hook the traction drag ring 404 to realize the connection between the loading / unloading device and the sliding bracket 400, which facilitates the pulling of the sliding bracket 400 and thus realizes automatic unloading. A return spring 310 is assembled between the wedge-shaped mounting block 306 and the moving slider 304. The fixed bracket 301 is internally fixedly connected to a guide rod 303, and the movable slider 304 is slidably connected to the outside of the guide rod 303 to ensure the movement stability of the movable slider 304.

[0039] The operation process of this embodiment is as follows: When it is necessary to push the spring to be processed into the tempering chamber 200, first place the loading assembly 500 with the spring installed and the discharge mesh plate 504 fixed on the sliding bracket 400, ensuring that the rotating wheel 501 is engaged in the arc-shaped slide rail 403. Start the power motor 316 through the main control box 600. The power motor 316 drives the drive rotating shaft 311 to rotate. The drive rotating shaft 311 drives the drive sprocket 313 to rotate. The drive sprocket 313 drives the driven sprocket 314 and the driven rotating shaft 312 to rotate synchronously through the transmission chain 315. The transmission chain 315 drives the moving slider 304 to move along the guide support rod 303 towards the chamber body 201. During the movement, the traction hook 309 of the rotating rod 308 first lifts upward, and then the traction hook 309 hooks the traction ring 404. At this time, the top pull rod 307 forms a downward rotation limit on the rotating rod 308 to prevent the rotating rod 308 from bending under force. Then the top pull rod 307 pushes the sliding bracket 400, so that the sliding groove plate 402 of the sliding bracket 400 moves smoothly along the outer slide rail 302 and the inner slide rail 211 until the sliding bracket 400 is completely inside the hopper 201. Then the top rod is used to push the rotating rod 308 upward, so that the traction hook 309 disengages from the traction ring 404. Then the power motor 316 is started in reverse to reset the loading and unloading device. When the spring that has undergone tempering needs to be pulled out of the tempering chamber 200, after the tempering process is completed and the temperature inside the chamber has dropped to a safe range, the chamber door 202 is opened, and the above operation is repeated, so that the traction hook 309 hooks the traction ring 404. Then, the power motor 316 is started through the main control box 600, and the power motor 316 is controlled to reverse. The power motor 316 drives the drive shaft 311 and the drive sprocket 313 to rotate in the opposite direction. The transmission chain 315 drives the moving slider 304 to move along the guide rod 303 in the direction away from the chamber body 201. During the movement... The traction hook 309 firmly hooks the traction ring 404, and the top pull rod 307 pulls the sliding bracket 400, so that the sliding bracket 400 together with the material loading assembly 500 moves smoothly out of the tempering chamber 200 along the built-in slide rail 211 and the external slide rail 302 until the sliding bracket 400 is completely moved onto the external slide rail 302. Then the power motor 316 is turned off. At this time, the operator can lift the material loading assembly 500 through the lifting ring 505, or directly open the pin structure on the discharge screen plate 504, open the discharge screen plate 504 to take out the tempered spring, and complete the entire unloading process.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A tempering apparatus for nitriding treatment of spring surfaces, characterized in that: include, The sliding bracket (400) includes a rectangular support frame (401), the top of which is fixedly connected to two parallel sliding groove plates (402), the top of which is fixedly connected to two symmetrically distributed arc-shaped slide rails (403), and a traction drag ring (404) is fixedly connected to the center of one side of the support frame (401). The material loading assembly (500) includes two symmetrical rotating wheels (501), and the rotating wheels (501) roll in the corresponding arc-shaped slide rails (403). A cylindrical material loading basket (503) is fixedly connected between the two rotating wheels (501). An arc-shaped discharge mesh plate (504) is rotatably connected to the opening of the cylindrical material loading basket (503). A hexagonal sleeve (506) and a drive transmission rod (507) are fixedly connected at the center of the opposite sides of the two rotating wheels (501). A connecting mother plate (508) is fixedly connected to the free end of the drive transmission rod (507). A plurality of connecting grooves (508a) are equidistantly opened along the circumference on the side of the connecting mother plate (508) opposite to the drive transmission rod (507). The tempering chamber (200) includes a chamber body (201), a chamber door (202) rotatably connected to the front of the chamber body (201), a connector for connecting to the connecting mother plate (508) and driving the material loading assembly (500) to rotate is installed inside the chamber door (202), a rotary motor (210) for driving the connector to rotate is fixedly connected to the outside of the chamber door (202), two parallel built-in slide rails (211) are fixedly connected to the bottom of the inner cavity of the chamber body (201), and a sliding groove plate (402) is adapted to the built-in slide rails (211), and a hexagonal transmission rod (204) adapted to be inserted into the hexagonal sleeve (506) is rotatably connected to the back of the chamber body (201); and, The conveying assembly (300) includes a fixed bracket (301), the top of which is fixedly connected to two external slide rails (302) that are respectively connected to the two built-in slide rails (211). The fixed bracket (301) is provided with a power assembly, and the power assembly is equipped with a loading and unloading device for pushing and pulling the sliding bracket (400) to complete the loading and unloading action.

2. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: Both sides of the chamber (201) are fixedly connected to a connecting pipe (213), and the free ends of the two connecting pipes (213) are equipped with high temperature resistant valves (214). The two high temperature resistant valves (214) are used to connect the nitrogen inlet pipe and the exhaust pipe respectively, so as to maintain a nitrogen atmosphere in the tempering chamber (200).

3. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: The top of the silo body (201) is fixedly connected to a mounting base (216), and the outside of the silo door (202) is fixedly connected to a fixed connecting frame (215). The mounting base (216) is rotatably connected to a hydraulic rod (217) for pressing the silo door (202), and the fixed connecting frame (215) is rotatably connected to the output end of the hydraulic rod (217). A sealing ring is fixedly embedded on the inside of the silo door (202).

4. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: The connector includes a connecting rod (205) rotatably connected inside the compartment door (202), and the connecting rod (205) is fixedly connected to the output end of the rotating motor (210). One end of the connecting rod (205) located inside the compartment body (201) is provided with a guide slide (206). A sliding guide rod (207) is slidably connected inside the guide slide (206). A connecting plate (209) is fixedly connected to the free end of the sliding guide rod (207). A number of connecting protrusions (209a) adapted to the connecting groove (508a) are fixedly connected circumferentially on the side of the connecting plate (209) facing the connecting mother plate (508). A high-temperature resistant buffer spring (208) for pushing the sliding guide rod (207) is installed inside the guide slide (206) to realize the automatic docking of the connecting protrusion (209a) and the connecting groove (508a).

5. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: The inner wall of the tempering chamber (200) is equipped with several heating elements (212) for raising the internal temperature of the tempering chamber (200), and a temperature sensor (218) for monitoring the internal temperature of the tempering chamber (200) is installed on the top of the inner wall of the tempering chamber (200).

6. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: The power assembly includes a drive shaft (311) and a driven shaft (312) rotatably connected inside the fixed bracket (301). Drive sprockets (313) and driven sprockets (314) are fixedly connected to the outside of the drive shaft (311) and driven shaft (312), respectively. A transmission chain (315) is installed on the outside of the drive sprockets (313) and driven sprockets (314). A power motor (316) is fixedly connected to one side of the fixed bracket (301), and the drive shaft (311) is fixedly connected to the output end of the power motor (316).

7. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 6, characterized in that: The loading and unloading device includes a movable slider (304) fixedly connected to the outside of the transmission chain (315). The movable slider (304) is slidably connected to four vertically sliding limit rods (305). The top of the four limit rods (305) is fixedly connected to a wedge-shaped mounting block (306) with an inclined surface facing away from the bin body (201). The mounting block (306) facing the bin body (201) is fixedly connected to a top pull rod (307) for pushing and pulling the sliding bracket (400). The free end of the top pull rod (307) is rotatably connected to a rotating rod (308). The top pull rod (307) limits the downward rotation of the rotating rod (308). The bottom surface of the rotating rod (308) near the free end is fixedly connected to a traction hook (309) for hooking the traction drag ring (404). A return spring (310) is assembled between the wedge-shaped mounting block (306) and the movable slider (304).

8. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 7, characterized in that: The fixed bracket (301) is internally fixedly connected to a guide rod (303), and the movable slider (304) is slidably connected to the outside of the guide rod (303) to ensure the movement stability of the movable slider (304).

9. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: Several connecting rods (502) for strengthening the overall strength are fixedly connected between the two rotating wheels (501). A lifting ring (505) is fixedly connected to the center of one of the connecting rods (502), and the lifting ring (505) is directly opposite the center of the discharge mesh plate (504) when it is closed. When the discharge mesh plate (504) is closed, it is connected to the outside of the cylindrical material carrying basket (503) through a pin structure. Several partition mesh plates (509) parallel to the end face of the cylindrical material carrying basket (503) are fixedly connected inside the cylindrical material carrying basket (503).

10. The tempering apparatus for nitriding treatment of spring surfaces as described in claim 1, characterized in that: It also includes a base frame (100), the compartment (201) and the fixed bracket (301) are both fixedly connected to the top of the base frame (100), and the top of the base frame (100) is also fixedly connected to a main control box (600) for controlling the operation of the electrical equipment of the entire device.

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