A sintering device for powder metallurgy gear ring

Abstract

The application relates to the technical field of metal sintering, and discloses a sintering device for powder metallurgy gear rings, which comprises a bottom plate, a sintering device is fixedly connected to the top of the bottom plate, an outer shell one is fixedly connected to the top of the sintering device, a driving device is fixedly connected to the outer wall of the outer shell one, a driving column is rotationally connected to the inner wall of the outer shell one through a bearing, the output end of the driving device is fixedly connected with the driving column, a conveying belt one is fixedly connected to the outer wall of the driving column, and a placing mechanism is fixedly connected to the inner wall of the conveying belt one. The gear ring is hung on the rotatable structure through the placing mechanism, and the gear ring is driven to rotate, so that the gear ring can be uniformly heated during sintering, the local heat conduction deviation caused by the object shielding in the traditional fixed placement mode is effectively avoided, the processing quality problem caused by uneven heating is solved, and the uniformity and reliability of sintering processing are improved.

Description

Technical Field

[0001] This invention relates to the field of metal sintering technology, specifically to a sintering apparatus for powder metallurgy gear rings. Background Technology

[0002] Sintering refers to the transformation of powdered materials into a dense body. It is a traditional process that has long been used to produce ceramics, powder metallurgy, refractories, and ultra-high temperature materials. After the powder is shaped, it is sintered to obtain a dense body. The dense body obtained by sintering is a polycrystalline material, and its microstructure consists of crystals, glass, and pores.

[0003] Patent application CN119588934A discloses a sintering apparatus for powder metallurgy gear rings. A conveyor belt is installed on a conveyor frame for transporting powder-pressed alloy gear rings. The conveyor frame is equipped with a processing box, which sequentially contains a stearic acid zone, a heating zone, a dewaxing zone, a sintering zone, a rapid cooling zone, and a gas quenching zone. The conveyor belt transports the gold gear rings through the processing box. The stearic acid zone is used to add stearic acid to the gear rings. The heating zone contains heating elements for initial heating of the gear rings. The dewaxing zone contains heating elements for heating and combustion dewaxing. The sintering zone contains heating elements for sintering the gear rings. The rapid cooling zone is used to introduce cooling gas to lower the temperature of the gear rings. The gas quenching zone is used to introduce quenching gas. The temperature in the heating zone is lower than the temperature in the sintering zone. Both the heating zone and the sintering zone are equipped with circulating fans and gas distributors. The circulating fans blow air towards the corresponding gas distributors to improve temperature uniformity.

[0004] When existing equipment is in use, the toothed ring is subjected to high-temperature sintering. Due to the uneven stress distribution and heat conduction deviation caused by the support structure, the toothed ring is prone to irregular deformation during the sintering process. At the same time, the direct contact between the toothed ring and the support surface under high temperature can cause interface adhesion problems, which affects the sintered toothed ring and leads to an increase in the scrap rate of the toothed ring during the processing, which is not conducive to production needs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a sintering apparatus for powder metallurgy gear rings, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sintering device for powder metallurgy gear rings, comprising a base plate, a sintering device fixedly connected to the top of the base plate, a housing fixedly connected to the top of the sintering device, a driving device fixedly connected to the outer wall of the housing, a driving column rotatably connected to the inner wall of the housing via a bearing, an output end of the driving device fixedly connected to the driving column, a conveyor belt fixedly connected to the outer wall of the driving column, and a placement mechanism fixedly connected to the inner wall of the conveyor belt.

[0007] The placement mechanism includes:

[0008] A connecting column one is fixedly connected to a conveyor belt one on its outer wall. A connecting plate one is fixedly connected to the outer wall of the connecting column one. A connecting column two is fixedly connected to the inner wall of the connecting plate one. A housing two is fixedly connected to the end of the connecting column two away from the connecting plate one. A rotating assembly is rotatably connected to the inner wall of the housing two via a bearing. This driving device drives the placement mechanism to move through the driving column and the conveyor belt one. By setting up the placement mechanism, the gear ring is suspended on a rotatable structure and drives the gear ring to rotate. This allows the gear ring to be heated evenly during the sintering process, effectively avoiding the local heat conduction deviation caused by object obstruction in the traditional fixed placement method, solving the processing quality problem caused by uneven heating, and improving the uniformity and reliability of the sintering process.

[0009] According to the above technical solution, a support column is fixedly connected to the top of the base plate, a first outer shell is fixedly connected to the top of the support column, a first force-bearing plate is fixedly connected to the inner wall of the first outer shell, and a second force-bearing plate is fixedly connected to the bottom of the first force-bearing plate. The first force-bearing plate and the second force-bearing plate are used to change the state of the placement mechanism.

[0010] According to the above technical solution, the inner wall of the outer shell 2 is rotatably connected to the sleeve 1 through the bearing, the top of the outer shell 2 is provided with a notch, the inner wall of the sleeve 1 is fitted with the conveyor belt 2, and the inner wall of the outer shell 2 is rotatably connected to the rotating assembly through the bearing. After the sleeve 1 contacts the force plate 1, the sleeve 1 will rotate as the placement mechanism moves.

[0011] According to the above technical solution, the rotating assembly includes a sleeve two. The inner wall of the outer shell two is rotatably connected to the sleeve two through a bearing. A placement column is fixedly connected to the side of the sleeve two near the connecting plate one. A concave ring is provided on the outer wall of the placement column. This concave ring facilitates the insertion of the gear ring. By setting the rotating assembly and setting a concave ring structure at the placement position of the gear ring, this design allows the gear ring to reside in the concave ring, which not only effectively prevents the gear ring from falling off during equipment operation, but also eliminates local heat conduction blind spots by controlling the distance between the gear ring and the outer shell two, thereby improving the stability and uniformity of the sintering process.

[0012] According to the above technical solution, the inner wall of the placement column is provided with a cavity, the outer wall of the concave ring is provided with a sliding groove, the sliding groove passes through the concave ring and extends to the inner wall of the cavity, the cavity is provided with a circular hole, the circular hole passes through the second sleeve and extends to the outer side of the second sleeve, the inner wall of the cavity is fixedly connected with an auxiliary component, the inner wall of the sliding groove is movably connected with a moving component, the second sleeve is rotatably connected to the first sleeve through a second conveyor belt, and when the first sleeve rotates, it will drive the rotating component to rotate as a whole through the second conveyor belt.

[0013] According to the above technical solution, the auxiliary component includes a spring, the inner wall of the cavity is fixedly connected to the spring, the end of the spring away from the cavity is fixedly connected to a pressing plate, the end of the pressing plate away from the spring is fixedly connected to a sliding rod, and the end of the sliding rod away from the pressing plate is fixedly connected to a right-angle plate. The top of the right-angle plate is rotatably connected to a force-receiving wheel via a bearing. When the force-receiving wheel is pressed by the force-receiving plate, it will drive the pressing plate to move outward, thereby causing the pressing plate to press the moving component to move outward. By setting the auxiliary component, when the gear ring is placed, the protruding plate automatically retracts a portion under gravity, facilitating the insertion of the gear ring. After entering the sintering process, the auxiliary component presses the moving component to lift it, ensuring that the gear ring maintains stable transmission during rotation and heating, and improving the uniformity and reliability of the sintering process.

[0014] According to the above technical solution, a sliding rod 2 is movably connected to the inner wall of the circular hole. A right-angle plate 2 is fixedly connected to the end of the sliding rod 2 away from the extrusion plate 1. A force-receiving wheel 2 is rotatably connected to the top of the right-angle plate 2 via a bearing. An extrusion plate 2 is fixedly connected to the end of the sliding rod 2 away from the right-angle plate 2. A sliding hole is opened at the end of the extrusion plate 2 away from the right-angle plate 2. The sliding hole passes through the extrusion plate 2 and extends to the outside of the right-angle plate 2. The inner wall of the sliding hole is movably connected to the sliding rod 1. A spring 2 is sleeved on the outer wall of the sliding rod 2. A placement mechanism is fixedly connected to the extrusion plate 2 at one end of the spring 2. The end of the spring 2 away from the extrusion plate 2 is fixedly connected to the cavity. When the force-receiving wheel 2 is squeezed by the force-receiving plate 2, it will drive the sliding hole to move inward, thereby causing the sliding hole extrusion moving assembly to move outward.

[0015] According to the above technical solution, the moving component includes an elastic component. The inner wall of the cavity is fixedly connected to the elastic component. A force-bearing plate three is fixedly connected to the end of the elastic component away from the cavity. A connecting plate two is fixedly connected to the end of the force-bearing plate three away from the elastic component. A protruding plate is fixedly connected to the outer side of the connecting plate two. The outer wall of the protruding plate is movably connected to the slide groove. When the force-bearing plate three is squeezed by the extrusion plate two and the extrusion plate one, the protruding plate will move outward through the extrusion plate one. By setting the moving component, after the gear ring is put into the concave ring of the rotating component, its built-in protruding plate pops out. The protruding plate reduces the contact area between the gear ring and the concave ring, effectively avoiding the interface adhesion phenomenon during high-temperature sintering. On the other hand, the protruding part of the protruding plate reduces the slippage phenomenon during the transmission process, so that the gear ring can maintain stable rotation in the heating environment. The reliability of sintering processing is guaranteed from both the contact area control and transmission stability aspects.

[0016] Compared with the prior art, the present invention provides a sintering apparatus for powder metallurgy gear rings, which has the following beneficial effects:

[0017] 1. This invention suspends the gear ring on a rotatable structure by setting up a placement mechanism, which drives the gear ring to rotate. This allows the gear ring to be heated evenly during the sintering process, effectively avoiding local heat conduction deviations caused by object obstruction in traditional fixed placement methods, solving the processing quality problems caused by uneven heating, and improving the uniformity and reliability of sintering processing.

[0018] 2. By setting a rotating component, the present invention sets a concave ring structure at the position where the toothed ring is placed. This design allows the toothed ring to remain in the concave ring, which not only effectively prevents the toothed ring from falling off during equipment operation, but also eliminates local heat conduction blind spots by controlling the distance between the toothed ring and the outer shell, thereby improving the stability and uniformity of sintering.

[0019] 3. By setting up a moving component, after the gear ring is placed into the concave ring of the rotating component, its built-in protruding plate pops out. The protruding plate reduces the contact area between the gear ring and the concave ring, effectively avoiding the interface adhesion phenomenon during high-temperature sintering. On the other hand, the protruding part of the protruding plate reduces the slippage phenomenon during the transmission process, so that the gear ring can maintain stable rotation in the heating environment. The reliability of sintering process is guaranteed from both the contact area control and transmission stability aspects.

[0020] 4. By setting up an auxiliary component, when the gear ring is placed, the protruding plate automatically retracts a portion under gravity, making it easier to insert the gear ring; after entering the sintering process, the auxiliary component squeezes the moving component to lift it, ensuring that the gear ring maintains stable transmission during the rotation and heating process, thereby improving the uniformity and reliability of the sintering process. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Cross-sectional view of the overall structure of the present invention Figure 1 ;

[0024] Figure 3 Cross-sectional view of the overall structure of the present invention Figure 2 ;

[0025] Figure 4 This is a schematic diagram of the placement mechanism of the present invention;

[0026] Figure 5 This is a cross-sectional view of the placement mechanism of the present invention;

[0027] Figure 6 Schematic diagram of the rotating component of the present invention Figure 1;

[0028] Figure 7 Cross-sectional view of the rotating component of the present invention Figure 1 ;

[0029] Figure 8 Cross-sectional view of the rotating component of the present invention Figure 2 ;

[0030] Figure 9 Schematic diagram of auxiliary components of the present invention Figure 1 ;

[0031] Figure 10 Schematic diagram of auxiliary components of the present invention Figure 2 ;

[0032] Figure 11 This is a schematic diagram of the movable component of the present invention.

[0033] In the diagram: 1. Base plate; 101. Sintering device; 102. Support column; 103. Outer shell 1; 104. Drive device; 105. Drive column; 106. Conveyor belt 1; 107. Force plate 1; 108. Force plate 2; 2. Placement mechanism; 201. Connecting column 1; 202. Connecting plate 1; 203. Connecting column 2; 204. Outer shell 2; 205. Notch; 206. Sleeve 1; 207. Conveyor belt 2; 21. Rotating assembly; 211. Sleeve 2; 212. Placement column; 213. Recess 214. Cavity; 215. Slide groove; 216. Circular hole; 22. Auxiliary component; 221. Spring 1; 222. Extrusion plate 1; 223. Sliding rod 1; 224. Right angle plate 1; 225. Force wheel 1; 226. Sliding rod 2; 227. Extrusion plate 2; 228. Sliding hole; 229. Spring 2; 2210. Right angle plate 2; 2211. Force wheel 2; 23. Moving component; 231. Protruding plate; 232. Connecting plate 2; 233. Force plate 3; 234. Elastic component. Detailed Implementation

[0034] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Example 1: See Figures 1-5 The present invention provides a technical solution: a sintering device for powder metallurgy gear rings, comprising a base plate 1, a sintering device 101 fixedly connected to the top of the base plate 1, a housing 103 fixedly connected to the top of the sintering device 101, a driving device 104 fixedly connected to the outer wall of the housing 103, a driving column 105 rotatably connected to the inner wall of the housing 103 via bearings, the output end of the driving device 104 fixedly connected to the driving column 105, a conveyor belt 106 fixedly connected to the outer wall of the driving column 105, and a placement mechanism 2 fixedly connected to the inner wall of the conveyor belt 106. A support column 102 is fixedly connected to the top of the support column 102. A housing 103 is fixedly connected to the inner wall of the housing 103. A force-bearing plate 107 is fixedly connected to the bottom of the force-bearing plate 107. The force-bearing plate 107 and the force-bearing plate 108 are fixedly connected to the bottom of the force-bearing plate 107. The force-bearing plate 107 and the force-bearing plate 108 are used to change the state of the placement mechanism 2. When the equipment is running, the drive column 105 is driven to rotate by the drive device 104. The rotating drive column 105 will drive the conveyor belt 106 to move. At this time, the placement mechanism 2 on the conveyor belt 106 will also move along the track of the conveyor belt 106.

[0038] To ensure uniform heating during gear ring machining, a placement mechanism 2 is provided. The placement mechanism 2 includes: a connecting column 201, the outer wall of which is fixedly connected to a conveyor belt 106; a connecting plate 202 fixedly connected to the outer wall of the connecting column 201; a connecting column 203 fixedly connected to the inner wall of the connecting plate 202; a housing 204 fixedly connected to the end of the connecting column 203 away from the connecting plate 202; a rotating assembly 21 rotatably connected to the inner wall of the housing 204 via a bearing; a drive device 104 drives the placement mechanism 2 to move via a drive column 105 and a conveyor belt 106; a sleeve 206 rotatably connected to the inner wall of the housing 204 via a bearing; and a notch 205 is provided at the top of the housing 204. The inner wall of the first sleeve 206 is fitted with a second conveyor belt 207, and the inner wall of the second outer shell 204 is rotatably connected to a rotating assembly 21 via a bearing. After the first sleeve 206 contacts the first force plate 107, the first sleeve 206 will rotate as the placement mechanism 2 moves. When the gear ring needs to be processed, the gear ring is hung on the outside of the rotating assembly 21. At this time, as the placement mechanism 2 moves, the top of the first sleeve 206 will contact the first force plate 107. Through the friction between the first force plate 107 and the first sleeve 206, the first sleeve 206 will rotate. The rotating first sleeve 206 will drive the rotating assembly 21 to rotate through the second conveyor belt 207, and then drive the gear ring hanging on the rotating assembly 21 to rotate through the rotation of the rotating assembly 21.

[0039] The rotating assembly 21 includes a sleeve 211. The inner wall of the outer shell 204 is rotatably connected to the sleeve 211 via a bearing. A placement post 212 is fixedly connected to the side of the sleeve 211 near the connecting plate 202. A concave ring 213 is formed on the outer wall of the placement post 212 to facilitate the insertion of the gear ring. A cavity 214 is formed on the inner wall of the placement post 212. A groove 215 is formed on the outer wall of the concave ring 213, which penetrates the concave ring 213 and extends... The inner wall of cavity 214 is provided with a circular hole 216. The circular hole 216 passes through sleeve 211 and extends to the outside of sleeve 211. An auxiliary component 22 is fixedly connected to the inner wall of cavity 214. A moving component 23 is movably connected to the inner wall of slide groove 215. Sleeve 211 is rotatably connected to sleeve 1 206 through conveyor belt 207. When sleeve 1 206 rotates, it will drive the rotating component 21 to rotate as a whole through conveyor belt 207.

[0040] Example 2: Please refer to Figures 6-11Based on Embodiment 1, the present invention provides a technical solution: to avoid slippage during gear ring rotation, an auxiliary component 22 and a moving component 23 are provided. The auxiliary component 22 includes a spring 221. The inner wall of the cavity 214 is fixedly connected to the spring 221. A pressing plate 222 is fixedly connected to the end of the spring 221 away from the cavity 214. A sliding rod 223 is fixedly connected to the end of the pressing plate 222 away from the spring 221. A right-angle plate 224 is fixedly connected to the end of the sliding rod 223 away from the pressing plate 222. A force-receiving wheel 22 is rotatably connected to the top of the right-angle plate 224 via a bearing. 5. After the force-bearing wheel 225 is squeezed by the force-bearing plate 108, it will drive the extrusion plate 222 to move outward, which in turn causes the extrusion plate 222 to squeeze the moving assembly 23 to move outward. The inner wall of the circular hole 216 is movably connected to the sliding rod 226. The end of the sliding rod 226 away from the extrusion plate 222 is fixedly connected to the right-angle plate 2210. The top of the right-angle plate 2210 is rotatably connected to the force-bearing wheel 2211 through a bearing. The end of the sliding rod 226 away from the right-angle plate 2210 is fixedly connected to the extrusion plate 227. The end of the extrusion plate 227 away from the right-angle plate 2210 has a sliding hole 228. The sliding hole 228 penetrates the second extrusion plate 227 and extends to the outer side of the second right-angle plate 2210. The inner wall of the sliding hole 228 is movably connected to the first sliding rod 223. The outer wall of the second sliding rod 226 is fitted with a second spring 229. One end of the second spring 229 is fixedly connected to the placement mechanism 2 of the second extrusion plate 227, and the end of the second spring 229 away from the second extrusion plate 227 is fixedly connected to the cavity 214. When the second force wheel 2211 is squeezed by the second force plate 108, it will drive the sliding hole 228 to move inward, thereby causing the sliding hole 228 to squeeze the moving assembly 23 to move outward. When the gear ring needs to be processed, with the movement of the placement mechanism 2... When the force-bearing wheel 225 and the force-bearing wheel 2211 move, they will come into contact with the force-bearing plate 208. The force-bearing plate 208 will squeeze the force-bearing wheel 225 and the force-bearing wheel 2211, causing them to move to both sides. At this time, the moving force-bearing wheel 225 will pull the compression plate 222 to move inward through the right-angle plate 224 and the sliding rod 223, while the moving force-bearing wheel 2211 will pull the sliding hole 228 to move outward through the right-angle plate 2210 and the sliding rod 226. Then, the moving component 23 will be squeezed from both directions, causing the moving component 23 to bulge outward.

[0041] The movable component 23 includes an elastic component 234. The inner wall of the cavity 214 is fixedly connected to the elastic component 234. A force-bearing plate 233 is fixedly connected to the end of the elastic component 234 away from the cavity 214. A connecting plate 232 is fixedly connected to the end of the force-bearing plate 233 away from the elastic component 234. A protruding plate 231 is fixedly connected to the outer side of the connecting plate 232. The outer wall of the protruding plate 231 is movably connected to the slide groove 215. When the force-bearing plate 233 is squeezed by the compression plate 227 and the compression plate 222, the protruding plate 231 will move outward through the compression plate 222.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sintering device for powder metallurgy gear ring, comprising a bottom plate (1), the top of the bottom plate (1) is fixedly connected with a sintering device (101), characterized in that, The top of the sintering device (101) is fixedly connected with a shell one (103), the outer wall of the shell one (103) is fixedly connected with a driving device (104), the inner wall of the shell one (103) is rotatably connected with a driving column (105) through a bearing, the output end of the driving device (104) is fixedly connected with the driving column (105), the outer wall of the driving column (105) is fixedly connected with a conveying belt one (106), and the inner wall of the conveying belt one (106) is fixedly connected with a placing mechanism (2); The placing mechanism (2) comprises: A connecting column one (201) is fixedly connected with the conveying belt one (106), the outer wall of the connecting column one (201) is fixedly connected with a connecting plate one (202), the inner wall of the connecting plate one (202) is fixedly connected with a connecting column two (203), one end, away from the connecting plate one (202), of the connecting column two (203) is fixedly connected with a shell two (204), the inner wall of the shell two (204) is rotatably connected with a rotating assembly (21) through a bearing, the driving device (104) drives the placing mechanism (2) to move through the driving column (105) and the conveying belt one (106), the inner wall of the shell two (204) is rotatably connected with a sleeve one (206) through a bearing, the top of the shell two (204) is provided with a notch (205), the inner wall of the sleeve one (206) is sleeved with a conveying belt two (207), the inner wall of the shell two (204) is rotatably connected with the rotating assembly (21), after the sleeve one (206) contacts the stress plate one (107), the sleeve one (206) rotates with the movement of the placing mechanism (2); The rotating assembly (21) comprises a sleeve two (211), the inner wall of the shell two (204) is rotatably connected with the sleeve two (211) through a bearing, one side, close to the connecting plate one (202), of the sleeve two (211) is fixedly connected with a placing column (212), the outer wall of the placing column (212) is provided with a concave ring (213), the concave ring (213) facilitates the placing of the gear ring, the inner wall of the placing column (212) is provided with a cavity (214), the outer wall of the concave ring (213) is provided with a sliding groove (215), the sliding groove (215) penetrates through the concave ring (213) and extends to the inner wall of the cavity (214), the inside of the cavity (214) is provided with a circular hole (216), the circular hole (216) penetrates through the sleeve two (211) and extends to the outside of the sleeve two (211), the inner wall of the cavity (214) is fixedly connected with an auxiliary assembly (22), the inner wall of the sliding groove (215) is movably connected with a moving assembly (23), the sleeve two (211) is rotatably connected with the sleeve one (206) through the conveying belt two (207), and the rotating assembly (21) rotates as a whole through the conveying belt two (207) when the sleeve one (206) rotates. The auxiliary assembly (22) includes a spring (221), the inner wall of the cavity (214) is fixedly connected with the spring (221), one end of the spring (221) away from the cavity (214) is fixedly connected with the extrusion plate (222), one end of the extrusion plate (222) away from the spring (221) is fixedly connected with the sliding rod (223), one end of the sliding rod (223) away from the extrusion plate (222) is fixedly connected with the right angle plate (224), the top of the right angle plate (224) is rotatably connected with the stress wheel (225) through a bearing, the stress wheel (225) is extruded to drive the extrusion plate (222) to move outward, in turn, the extrusion plate (222) extrudes the moving assembly (23) to move outward, the inner wall of the circular hole (216) is movably connected with the sliding rod (226), one end of the sliding rod (226) away from the extrusion plate (222) is fixedly connected with the right angle plate (2210), the top of the right angle plate (2210) is rotatably connected with the stress wheel (2211) through a bearing, one end of the sliding rod (226) away from the right angle plate (2210) is fixedly connected with the extrusion plate (227), the end of the extrusion plate (227) away from the right angle plate (2210) is provided with a sliding hole (228), the sliding hole (228) penetrates through the extrusion plate (227) and extends to the outside of the right angle plate (2210), the inner wall of the sliding hole (228) is movably connected with the sliding rod (223), the outer wall of the sliding rod (226) is sleeved with the spring (229), one end of the spring (229) is fixedly connected with the extrusion plate (227) and the placing mechanism (2), the end of the spring (229) away from the extrusion plate (227) is fixedly connected with the cavity (214), the stress wheel (2211) is extruded to drive the sliding hole (228) to move inward, in turn, the sliding hole (228) extrudes the moving assembly (23) to move outward; The moving assembly (23) includes an elastic assembly (234), the inner wall of the cavity (214) is fixedly connected with the elastic assembly (234), one end of the elastic assembly (234) away from the cavity (214) is fixedly connected with the stress plate (233), one end of the stress plate (233) away from the elastic assembly (234) is fixedly connected with the connecting plate (232), the outer side of the connecting plate (232) is fixedly connected with the protruding plate (231), the outer wall of the protruding plate (231) is movably connected with the sliding groove (215), the protruding plate (231) is driven to move outward by the extrusion plate (222) when the stress plate (233) is extruded by the extrusion plate (227) and the extrusion plate (222).

2. The sintering device for powder metallurgy gear ring according to claim 1, characterized in that: The top of the bottom plate (1) is fixedly connected with a supporting column (102), the top of the supporting column (102) is fixedly connected with a shell one (103), the inner wall of the shell one (103) is fixedly connected with a stress plate one (107), the bottom of the stress plate one (107) is fixedly connected with a stress plate two (108), and the stress plate one (107) and the stress plate two (108) are used for changing the state of the placing mechanism (2).

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