High-temperature hanging tooling equipment for a nitriding furnace

Abstract

The utility model discloses a nitrogenization furnace high temperature hangs frock equipment belongs to nitrogenization furnace hanging technical field, and its technical scheme main points include base, the top fixed mounting of base has the furnace body, the top of furnace body is provided with the furnace cover, through setting up the suspension subassembly, when needing to hang the work piece, can rotate the metal baffle and make it separate with the magnetic attraction piece on the suspension cross bar, after hanging the work piece on the suspension cross bar surface, rotate the metal baffle again and make it adsorb with the magnetic attraction piece on the suspension cross bar, at this moment, the metal baffle will form the obstruction to the work piece, thereby can effectively promote the spacing effect to the work piece, avoid the work piece to fall off, through setting up the adjusting assembly, the sliding frame can slide on the annular frame surface to drive L shape frame and suspension cross bar to move, after adjusting to the appropriate position, the spacing rod will be under the action of fastening tension spring and be clamped into the recess in corresponding, realize the fixation to the sliding frame, and then complete the adjustment of the hanging position, to adapt to the work piece of different size, shape and quantity.

Description

Technical Field

[0001] This utility model relates to the technical field of nitriding furnace hanging equipment, and in particular to a high-temperature nitriding furnace hanging fixture. Background Technology

[0002] Nitriding is an important process for strengthening the surface of metallic materials. By placing the workpiece in a high-temperature nitriding furnace, nitrogen atoms are diffused into the surface of the workpiece under a specific atmosphere to form a high-hardness nitrided layer, thereby significantly improving the wear resistance, corrosion resistance and fatigue strength of the workpiece. During the nitriding process, the suspension method of the workpiece directly affects its heating uniformity, nitrided layer quality and production efficiency. Therefore, high-temperature hanging fixtures are key supporting components of the nitriding furnace.

[0003] Existing nitriding furnaces mostly use fixed suspension structures for their hanging fixtures. However, fixed hooks or rods have poor limiting effect on workpieces. During the flow of atmosphere inside the furnace, workpieces are prone to shaking or even falling off, which affects the processing quality. Furthermore, because the suspension position is fixed, it is impossible to flexibly adjust it according to the size, shape, and quantity of workpieces. When processing workpieces of different specifications, the entire set of hanging fixtures needs to be replaced, which not only increases equipment costs but also prolongs production preparation time, thereby reducing production efficiency.

[0004] To address this, a high-temperature hanging fixture for a nitriding furnace is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature hanging fixture for a nitriding furnace, which solves the problems of existing nitriding furnace hanging fixtures that mostly adopt fixed suspension structures. The fixed hooks or rods have poor limiting effect on the workpieces, and the workpieces are prone to shaking or even falling off during the flow of atmosphere in the furnace, thus affecting the processing quality. Furthermore, because the suspension position is fixed, it is impossible to flexibly adjust according to the size, shape, and quantity of the workpieces. When processing workpieces of different specifications, the entire set of hanging fixtures needs to be replaced, which not only increases equipment costs but also prolongs production preparation time, thereby reducing production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature hanging fixture for a nitriding furnace, comprising a base, a furnace body fixedly mounted on the top of the base, a furnace cover on the top of the furnace body, and a hanging mechanism at the bottom of the furnace cover. The hanging mechanism includes multiple sets of suspension components and adjustment components. Each suspension component includes an L-shaped frame, a suspension crossbar fixedly connected inside the L-shaped frame, and a U-shaped frame fixedly connected to the outer side of the top of the L-shaped frame. A rotating shaft is rotatably connected inside the U-shaped frame via a bearing, and a metal baffle is fixedly sleeved on the surface of the rotating shaft. A suspension plate is fixedly connected inside the U-shaped frame, and magnetic blocks are embedded on the side of the suspension plate and the suspension crossbar near the metal baffle. The magnetic blocks are used in conjunction with the metal baffle.

[0007] Preferably, the adjusting assembly includes an annular frame disposed at the bottom of the furnace cover, and a sliding frame is slidably connected to the surface of the annular frame, the sliding frame being fixedly connected to the top of the L-shaped frame.

[0008] Preferably, a limiting rod passes through the top of the sliding frame, and multiple grooves are evenly provided on the top of the annular frame, with the limiting rod cooperating with the grooves.

[0009] Preferably, a fastening tension spring is sleeved on one end of the limiting rod located outside the sliding frame, and the two ends of the fastening tension spring are fixedly connected to the end of the limiting rod and the top of the sliding frame, respectively.

[0010] Preferably, a pull ring is fixedly connected to the top of the limiting rod, and the surface of the pull ring is coated with an anti-slip coating.

[0011] Preferably, the top of the annular frame is provided with a support plate and a connecting rod is fixedly connected between the support plate and the annular frame. The bottom of the support plate is provided with a locking block and the bottom of the furnace cover is provided with an annular locking groove. The locking block is slidably connected inside the annular locking groove.

[0012] Preferably, a rotary motor is fixedly installed on the top of the furnace cover, and the output shaft of the rotary motor passes through the furnace cover and is fixedly connected to the top of the support plate.

[0013] Preferably, a bracket is fixedly connected to the top of the base, and a vertical groove is provided on the inner wall of the bracket. A screw is rotatably connected to the inside of the vertical groove through a bearing, and a threaded sleeve is threaded to the surface of the screw and fixedly connected to the furnace cover.

[0014] Preferably, a servo motor is fixedly mounted on the top of the bracket, and the output shaft of the servo motor is fixedly connected to the top of the screw.

[0015] Preferably, a guide rod is fixedly connected inside the vertical groove, and the threaded sleeve is slidably connected to the surface of the guide rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This application sets up a suspension assembly. When it is necessary to suspend a workpiece, the metal baffle can be rotated to separate it from the magnetic block on the suspension crossbar. After the workpiece is hung on the surface of the suspension crossbar, the metal baffle is rotated again to attract it to the magnetic block on the suspension crossbar. At this time, the metal baffle will block the workpiece, thereby effectively improving the limiting effect on the workpiece and preventing the workpiece from falling off.

[0018] 2. By setting an adjustment component, the sliding frame can slide on the surface of the ring frame, thereby driving the L-shaped frame and the suspension crossbar to move. After being adjusted to a suitable position, the limit rod will be locked into the corresponding groove under the action of the fastening spring, thereby fixing the sliding frame and completing the adjustment of the suspension position to adapt to workpieces of different sizes, shapes and quantities. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the high-temperature hanging fixture for the nitriding furnace of this utility model;

[0020] Figure 2 This is a schematic diagram showing the connection of the screw, screw sleeve, and hanging mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the suspension assembly of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0023] Figure 5 This is a schematic diagram showing the connection between the furnace cover and the support plate of this utility model.

[0024] In the diagram, 1. Base; 2. Furnace body; 3. Furnace cover; 4. Hanging mechanism; 41. Suspension assembly; 411. L-shaped frame; 412. Suspension crossbar; 413. U-shaped frame; 414. Metal baffle; 415. Suspension plate; 416. Magnetic block; 42. Adjustment assembly; 421. Ring frame; 422. Sliding frame; 423. Limiting rod; 424. Groove; 425. Fastening spring; 426. Pull ring; 5. Support plate; 6. Connecting rod; 7. Locking block; 8. Annular slot; 9. Rotary motor; 10. Bracket; 11. Vertical groove; 12. Screw; 13. Screw sleeve; 14. Servo motor; 15. Guide rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 The present invention provides the following technical solution:

[0027] A high-temperature hanging fixture for a nitriding furnace includes a base 1, a furnace body 2 fixedly mounted on the top of the base 1, a furnace cover 3 on the top of the furnace body 2, and a hanging mechanism 4 at the bottom of the furnace cover 3. The hanging mechanism 4 includes multiple sets of suspension components 41 and adjustment components 42. The suspension components 41 include an L-shaped frame 411, a suspension crossbar 412 fixedly connected inside the L-shaped frame 411, a U-shaped frame 413 fixedly connected to the outer side of the top of the L-shaped frame 411, a rotating shaft rotatably connected inside the U-shaped frame 413 via a bearing, and a metal baffle 414 fixedly sleeved on the surface of the rotating shaft. A suspension plate 415 is fixedly connected inside the U-shaped frame 413, and magnetic blocks 416 are embedded on the side of the suspension plate 415 and the suspension crossbar 412 near the metal baffle 414. The magnetic blocks 416 are used in conjunction with the metal baffle 414.

[0028] In this embodiment: by setting up the suspension assembly 41, the L-shaped frame 411 serves as the basic load-bearing structure of the suspension assembly 41, playing a connecting and supporting role. One end of the L-shaped frame 411 is fixed to the sliding frame 422 in the adjustment assembly 42, and the other end extends into the furnace space, providing an installation base for the suspension crossbar 412 while ensuring the structural stability of the entire suspension assembly 41. The suspension crossbar 412 is the component that directly supports the workpiece. The workpiece is suspended on its surface through hooks, lifting rings, and other connecting parts, providing a suspension fulcrum for the workpiece and ensuring that the workpiece can be stably placed in the nitriding treatment area within the furnace body 2. The U-shaped frame 413 serves as the mounting base for the metal baffle 414. Through bearing and shaft cooperation, it provides a support structure for the rotation of the metal baffle 414, ensuring that the metal baffle 414 can be flexibly rotated. The metal baffle 414 can prevent the workpiece from being rotated through the rotation action. When the workpiece is suspended, the metal baffle 414 rotates to fit against the suspension crossbar 412, preventing the workpiece from shaking or falling off during atmospheric flow within the furnace body 2. When picking up or placing the workpiece, the metal baffle 414 flips to fit against the suspension plate 415, thus releasing the workpiece from its limiting position. The suspension plate 415 can be used in conjunction with the metal baffle 414, and its surface magnetic blocks 416 can attract the metal baffle 414, keeping it in the open position and preventing it from drooping freely and interfering with the workpiece picking and placing operation. The magnetic blocks 416 can magnetically attract the metal baffle 414. When the metal baffle 414 fits against the magnetic blocks 416 on the suspension crossbar 412, it can limit and fix the workpiece. When the metal baffle 414 fits against the magnetic blocks 416 on the suspension plate 415, it can suspend and fix the metal baffle 414, ensuring convenient operation.

[0029] Specifically, such as Figure 4 As shown, the adjustment assembly 42 includes an annular frame 421, which is disposed at the bottom of the furnace cover 3. A sliding frame 422 is slidably connected to the surface of the annular frame 421, and the sliding frame 422 is fixedly connected to the top of the L-shaped frame 411.

[0030] Specifically, such as Figure 4 As shown, the top of the sliding frame 422 is through a limiting rod 423, and the top of the ring frame 421 is evenly provided with multiple grooves 424, which are used in conjunction with the limiting rod 423 and the grooves 424.

[0031] Specifically, such as Figure 4 As shown, a fastening spring 425 is sleeved on one end of the limiting rod 423 located outside the sliding frame 422. The two ends of the fastening spring 425 are fixedly connected to the end of the limiting rod 423 and the top of the sliding frame 422, respectively.

[0032] Specifically, such as Figure 4 As shown, a pull ring 426 is fixedly connected to the top of the limiting rod 423, and the surface of the pull ring 426 is coated with an anti-slip coating.

[0033] In this embodiment: by setting the adjustment component 42, the annular frame 421 serves as the basic frame of the adjustment component 42, providing a sliding track for the sliding frame 422, allowing multiple suspension components 41 to move along the annular track to adapt to the suspension requirements of different workpieces; the sliding frame 422 is the intermediate component connecting the annular frame 421 and the L-shaped frame 411, and can slide along the surface of the annular frame 421, driving the suspension components 41 to move as a whole, thereby realizing the circumferential adjustment of the suspension position and providing a suitable suspension spacing for workpieces of different sizes or quantities; the limiting rod 423, in conjunction with the groove 424, can realize the positioning and fixing of the sliding frame 422. When the sliding frame 422 moves to the target position, the limiting rod 423 is inserted into the corresponding groove 424, which can restrict the movement of the sliding frame 422 and ensure... The suspension assembly 41 is kept in a stable position during operation. Grooves 424 are evenly distributed on the top of the ring frame 421, which can cooperate with the limiting rod 423 to form multiple positioning points, providing different fixed position options for the sliding frame 422 and meeting diverse adjustment needs. The fastening tension spring 425 is sleeved on the outside of the limiting rod 423. Through its own tension, it can tightly pull the limiting rod 423 into the groove 424, enhancing the cooperation strength between the limiting rod 423 and the groove 424, preventing the limiting rod 423 from accidentally disengaging from the groove 424 during equipment operation, and ensuring the reliability of positioning. The pull ring 426 can provide a force point for the operator to easily pull the limiting rod 423 out of the groove 424 to adjust the position of the sliding frame 422. Its anti-slip coating can increase friction and improve the ease of operation.

[0034] Specifically, such as Figure 5 As shown, a support plate 5 is provided on the top of the ring frame 421, and a connecting rod 6 is fixedly connected between the support plate 5 and the ring frame 421. A locking block 7 is provided at the bottom of the support plate 5, and an annular locking groove 8 is provided at the bottom of the furnace cover 3. The locking block 7 is slidably connected inside the annular locking groove 8.

[0035] Specifically, such as Figure 5As shown, a rotary motor 9 is fixedly installed on the top of the furnace cover 3, and the output shaft of the rotary motor 9 passes through the furnace cover 3 and is fixedly connected to the top of the support plate 5.

[0036] In this embodiment: With the above configuration, the support plate 5, as a load-bearing component, is fixedly connected to the annular frame 421 via the connecting rod 6. This allows the annular frame 421 and all suspension components 41 to be stably supported under the furnace cover 3, while also providing an installation connection point for the rotary motor 9. The connecting rod 6 connects the support plate 5 and the annular frame 421, ensuring that the rotational power of the rotary motor 9 can be effectively transmitted to the annular frame 421, while also ensuring the structural stability of the annular frame 421 during rotation. The locking block 7 and the annular slot 8 can form a guiding and limiting structure, which, on the one hand, can provide support for the support plate 5 and the annular frame 421. The rotation of the ring frame 421 and the suspended workpiece serves as a guide, ensuring a smooth and concentric rotation process. On the other hand, it can withstand the weight of the ring frame 421 and the suspended workpiece, transferring the load to the furnace cover 3, avoiding radial force on the output bearing of the rotary motor 9, and extending the service life of the rotary motor 9. As a power source, the rotary motor 9 drives the support plate 5 to rotate through the output shaft, thereby driving the ring frame 421, the suspension assembly 41 and the workpiece to rotate synchronously. This allows the workpiece to rotate evenly during the nitriding process, ensuring that all parts of the workpiece are in full contact with the nitriding atmosphere inside the furnace body 2, resulting in more uniform heating and thus improving the consistency of the nitriding layer quality.

[0037] Specifically, such as Figure 1 , Figure 2 As shown, a bracket 10 is fixedly connected to the top of the base 1. A vertical groove 11 is provided on the inner wall of the bracket 10. A screw 12 is rotatably connected to the inside of the vertical groove 11 through a bearing. A screw sleeve 13 is threadedly connected to the surface of the screw 12 and is fixedly connected to the furnace cover 3.

[0038] Specifically, such as Figure 1 As shown, a servo motor 14 is fixedly mounted on the top of the bracket 10, and the output shaft of the servo motor 14 is fixedly connected to the top of the screw 12.

[0039] Specifically, such as Figure 2 As shown, a guide rod 15 is fixedly connected inside the vertical groove 11, and a threaded sleeve 13 is slidably connected to the surface of the guide rod 15.

[0040] In this embodiment: With the above configuration, the bracket 10 is installed on the top of the base 1, providing a mounting foundation for the servo motor 14, screw 12, and guide rod 15; the vertical groove 11 is formed on the inner wall of the bracket 10, providing installation space for the screw 12, guide rod 15, and screw sleeve 13, while also providing initial limit for the lifting and lowering of the screw sleeve 13 to prevent it from deviating; the screw 12 is rotatably connected to the vertical groove 11 through a bearing, and its surface thread engages with the screw sleeve 13. When the screw 12 rotates, it can convert the rotational motion into the linear lifting and lowering motion of the screw sleeve 13, thereby driving the furnace cover 3 to lift and lower; the servo motor 14 can output stable rotational power and transmit it to the screw 12, driving the screw 12 to rotate forward or backward, thereby precisely controlling the speed and rotation angle, achieving precise adjustment of the lifting and lowering height of the furnace cover 3, meeting the position requirements during workpiece loading and unloading, and improving the accuracy and convenience of operation; the guide rod 15 can play a guiding and limiting role, preventing the screw sleeve 13 from rotating with the screw 12, ensuring that the furnace cover 3 lifts and lowers smoothly in the vertical direction.

[0041] Working principle: First, the servo motor 14 drives the screw 12 to rotate, causing the screw sleeve 13 to lift the furnace cover 3 to the highest position along the guide rod 15, reserving operating space for workpiece suspension. Then, according to the size and quantity of the workpiece, the pull ring 426 is pulled to stretch the limit rod 423, tighten the tension spring 425, and disengage it from the groove 424. Then, the sliding frame 422 is pushed to slide along the ring frame 421 to adjust the spacing of each suspension assembly 41. After the position is determined, the pull ring 426 is released, and the limit rod 423 will be engaged in the corresponding groove 424 under the action of the tightening tension spring 425, thus completing the circumferential position fixation of the suspension assembly 41. Then, the metal baffle 414 is rotated to attract the magnetic block 416 on the suspension plate 415. Subsequently, the workpiece is hung on the surface of the suspension crossbar 412 through the hook or the ring. Then, the metal baffle 414 is flipped to make it attach to the suspension crossbar 412. The magnetic block 416 on the furnace body 2 is attracted to the furnace, forming a closed limit to prevent the workpiece from shaking or falling off. Then, the servo motor 14 is controlled to reverse, driving the furnace cover 3 to slowly descend until the furnace cover 3 is tightly fitted with the furnace body 2, completing the seal. At the same time, the rotary motor 9 is started, causing the output shaft of the rotary motor 9 to drive the support plate 5 to rotate. The support plate 5 will drive the ring frame 421, the suspension assembly 41 and the workpiece to rotate synchronously through the connecting rod 6, thereby ensuring that the workpiece is heated in all parts and that the nitriding atmosphere is in uniform contact. Finally, according to the process requirements, the temperature, atmosphere and other parameters inside the furnace body 2 are controlled to carry out nitriding treatment. After the treatment is completed, the rotary motor 9 is turned off. After the temperature inside the furnace body 2 drops to a safe range, the servo motor 14 is controlled to rotate forward, causing the furnace cover 3 to rise to the initial position. The metal baffle 414 is rotated to the hanging plate 415 adsorption state, and the processed workpiece can be removed.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature hanging fixture for a nitriding furnace, comprising a base (1), characterized in that: A furnace body (2) is fixedly installed on the top of the base (1). A furnace cover (3) is provided on the top of the furnace body (2). A hanging mechanism (4) is provided at the bottom of the furnace cover (3). The hanging mechanism (4) includes multiple sets of suspension components (41) and adjustment components (42). The suspension components (41) include an L-shaped frame (411). A suspension crossbar (412) is fixedly connected inside the L-shaped frame (411). The outer side of the top of the L-shaped frame (411) is fixedly connected to the crossbar. A U-shaped frame (413) is fixedly connected. The U-shaped frame (413) is rotatably connected to a rotating shaft through a bearing. A metal baffle (414) is fixedly sleeved on the surface of the rotating shaft. A suspension plate (415) is fixedly connected to the inside of the U-shaped frame (413). Magnetic blocks (416) are embedded on the side of the suspension plate (415) and the suspension crossbar (412) near the metal baffle (414). The magnetic blocks (416) are used in conjunction with the metal baffle (414).

2. The high-temperature hanging fixture for a nitriding furnace according to claim 1, characterized in that: The adjustment assembly (42) includes an annular frame (421) which is located at the bottom of the furnace cover (3). A sliding frame (422) is slidably connected to the surface of the annular frame (421), and the sliding frame (422) is fixedly connected to the top of the L-shaped frame (411).

3. The high-temperature hanging fixture for a nitriding furnace according to claim 2, characterized in that: The top of the sliding frame (422) is through a limiting rod (423), and the top of the ring frame (421) is evenly provided with multiple grooves (424). The limiting rod (423) is used in conjunction with the grooves (424).

4. The high-temperature hanging fixture for a nitriding furnace according to claim 3, characterized in that: The limiting rod (423) is fitted with a fastening spring (425) at one end outside the sliding frame (422). The two ends of the fastening spring (425) are fixedly connected to the end of the limiting rod (423) and the top of the sliding frame (422), respectively.

5. The high-temperature hanging fixture for a nitriding furnace according to claim 3, characterized in that: The top of the limiting rod (423) is fixedly connected to a pull ring (426), and the surface of the pull ring (426) is coated with an anti-slip coating.

6. The high-temperature hanging fixture for a nitriding furnace according to claim 2, characterized in that: The top of the ring frame (421) is provided with a support plate (5) and a connecting rod (6) is fixedly connected between the support plate (5) and the ring frame (421). The bottom of the support plate (5) is provided with a locking block (7) and the bottom of the furnace cover (3) is provided with an annular locking groove (8). The locking block (7) is slidably connected inside the annular locking groove (8).

7. The high-temperature hanging fixture for a nitriding furnace according to claim 6, characterized in that: A rotary motor (9) is fixedly installed on the top of the furnace cover (3). The output shaft of the rotary motor (9) passes through the furnace cover (3) and is fixedly connected to the top of the support plate (5).

8. The high-temperature hanging fixture for a nitriding furnace according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a bracket (10), and the inner wall of the bracket (10) is provided with a vertical groove (11). The inside of the vertical groove (11) is rotatably connected to a screw (12) through a bearing. The surface of the screw (12) is threadedly connected to a screw sleeve (13), and the screw sleeve (13) is fixedly connected to the furnace cover (3).

9. The high-temperature hanging fixture for a nitriding furnace according to claim 8, characterized in that: A servo motor (14) is fixedly installed on the top of the bracket (10), and the output shaft of the servo motor (14) is fixedly connected to the top of the screw (12).

10. The high-temperature hanging fixture for a nitriding furnace according to claim 8, characterized in that: A guide rod (15) is fixedly connected inside the vertical groove (11), and the threaded sleeve (13) is slidably connected to the surface of the guide rod (15).

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