A powder metallurgy sintering furnace

Abstract

The present invention provides a powder metallurgy sintering furnace, which belongs to the technical field of sintering furnaces. It comprises a sintering device, on which a mesh belt conveyor is installed, and the mesh belt conveyor is used to convey powder workpieces; a circle of support members is installed on the mesh belt conveyor; a circle of support members are respectively used to support the powder workpieces; a circle of support members are respectively installed with spacer pushers; the spacer pushers are used to increase the uniformity of heating of the powder workpieces; the sintering device is installed with lifting and placing members; the lifting and placing members are used to prevent scalding. The present invention can realize the support of the workpiece to move and perform sintering work by arranging mesh belt conveyors and support members, which is efficient and flexible. At the same time, it can cooperate with the spacer pushers to realize the pushing of the workpiece, and avoid the workpiece being supported and blocked by the support sheet at a single position; so as to solve the problem that the existing powder metallurgy sintering furnace is not convenient for automatic control of anti-blocking, and the workpiece is not safe when filling the sintering furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of sintering furnaces, in particular to a powder metallurgy sintering furnace. Background Art

[0002] The working principle of the powder metallurgy sintering furnace is that, for example, for gear workpieces, metal powder is first stamped into shape to obtain a powder workpiece blank. At this time, its strength after stamping is poor. Through high-temperature heating, the metal or non-metallic powder particles diffuse, fuse and densify, and finally form a solid material or part with specific properties. The sintering furnace is the key to the molding quality of powder metallurgy workpieces.

[0003] At present, powder metallurgy sintering furnaces usually use mesh belts to transport workpieces. The workpieces are easily blocked by the metal wires of the mesh belt, affecting the comprehensiveness of the heating and making it inconvenient to automatically control the anti-blocking. At the same time, the workpieces are not safe when filling the sintering furnace. Manual contact with the mesh belt may cause burns, making it inconvenient to control the isolated delivery of workpieces. At the same time, when placing stamped powder metallurgy workpiece blanks, in order to prevent burns, they usually need to be placed quickly. The blanks have poor strength and are easily bumped and broken. Therefore, the present application provides a powder metallurgy sintering furnace to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a powder metallurgy sintering furnace to solve the problems that the existing powder metallurgy sintering furnace is not convenient for automatic control of anti-shielding and the workpiece is not safe when filling the sintering furnace.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A powder metallurgy sintering furnace includes a sintering device, which is equipped with a mesh belt conveyor, which is used to convey powder workpieces; a circle of support members is installed on the mesh belt conveyor; one circle of support members is used to support the powder workpieces respectively; one circle of support members is respectively equipped with spacer pushers; the spacer pushers are used to increase the uniformity of heating of the powder workpieces; the sintering device is equipped with lifting and placing members; the lifting and placing members are used to prevent scalding; the sintering device is equipped with lowering members; the lowering members are used to prevent falling injuries; the sintering device includes: a sintering furnace shell and guide blocks, a furnace chamber is provided inside the sintering furnace shell; a row of guide blocks are fixedly installed on both sides of the furnace chamber of the sintering furnace shell, and the two sides of the guide blocks are inclined structures.

[0007] Optionally, the sintering device also includes an operating table fixedly mounted on the sintering furnace shell; a shielding cover is fixedly mounted on the operating table; a conveying mounting frame is fixedly mounted on the sintering furnace shell; the conveying mounting frame passes through the furnace chamber of the sintering furnace shell; a row of flame nozzles is fixedly mounted on the conveying mounting frame; a row of electric heating wires is fixedly mounted on the conveying mounting frame; a row of the electric heating wires is respectively located under a row of flame nozzles.

[0008] Optionally, the mesh belt conveyor includes a conveying motor fixedly mounted on a conveying mounting frame; the output shaft of the conveying motor passes through the conveying mounting frame; two mesh belt conveying rollers are rotatably mounted on the conveying mounting frame; the output shaft of the conveying motor is fixedly mounted on the mesh belt conveying roller on the same side; steel mesh belts are respectively rolled and sleeved on the two mesh belt conveying rollers; the steel mesh belt is located on the outside of the conveying mounting frame; the steel mesh belt is a steel mesh fireproof structure.

[0009] Optionally, the support member includes a circle of support bars fixedly mounted on the steel mesh belt; the structure on the circle of support bars is the same, and a support frame is fixedly mounted on the support bar; the two sides of the bottom of the support frame are respectively attached to the steel mesh belt; the support bar is a strip structure; a row of support plates are fixedly mounted on the support frame, and a row of support plates are respectively provided with grooves; a row of support plates are respectively used to place powder workpieces; a circle of the support frame is respectively aligned with a row of flame nozzles; a row of flame nozzles are respectively connected to an external gas source.

[0010] Optionally, the spacing pushing member includes a spacing pushing frame slidably mounted on a support frame; swing columns are fixedly mounted on both ends of the spacing pushing frame; two of the swing columns pass through the support frame respectively; the two swing columns are aligned with two rows of guide blocks respectively; the two rows of guide blocks are used to move the swing columns upward; a row of lifting plates is fixedly mounted on the support frame, and a row of lifting plates is slidably inserted into a row of support plates; when a row of lifting plates is raised, its height is higher than that of a row of support plates.

[0011] Optionally, the lifting and placing component includes two lifting shafts slidably mounted on the operating table; a blanking frame is fixedly mounted on the two lifting shafts; a handle is installed on the blanking frame; springs are respectively sleeved on the two lifting shafts, and the springs on the lifting shafts are connected between the blanking frame and the operating table; the handle on the blanking frame is used to manually press down the blanking frame.

[0012] Optionally, the lifting and placing component also includes two baffles fixedly installed on the bottom of the blanking frame; the two baffles are respectively plugged into the operating table; the two baffles are respectively used for shielding and protection; a partition frame is fixedly installed on the blanking frame; the partition frame is used to separate powder workpieces; there is a distance between the blanking frame and the support frame on the same side to prevent burns.

[0013] Optionally, the lifting and placing component also includes an electromagnet fixedly mounted on the blanking frame; a cover plate is rotatably mounted on the blanking frame, and the cover plate is made of iron metal; the electromagnet is located below the cover plate; the electromagnet is used to magnetically attract the cover plate; a flip baffle is fixedly mounted on the blanking frame, and the flip baffle is an L-shaped structure; the flip baffle is used to cover the cover plate.

[0014] Optionally, the lowering member includes a support plate that is slidably inserted into the blanking frame; the support plate passes through the blanking frame; both sides of the end of the support plate are chamfered; a handle is provided on the support plate; and the support plate is located below the partition frame.

[0015] Optionally, the lowering member further includes a micro switch fixedly mounted on the side of the blanking frame; the end of the micro switch is aligned with the support plate; and the micro switch is electrically connected to the electromagnet.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, the mesh belt conveyor and the support member can be used to support the workpiece to move and perform sintering work. It is efficient and flexible, ensuring flexibility of use while facilitating the transportation of the workpiece. At the same time, it can be combined with the spacer pusher to push the workpiece to avoid the workpiece being supported and blocked by the support sheet at a single position. It can be used to support the position of the workpiece blocked by the support sheet, so that the blocked area can be heated evenly, which can improve the workpiece molding quality and ensure sufficient particle diffusion.

[0018] By setting up lifting and placing parts, the safety of workers when placing workpieces for heating can be improved, and the support frame with residual temperature after heating can be used to avoid scalding workers. The lifting and placing parts are used to place the workpieces on the top first and then drop them down. The structure is simple and reasonable. At the same time, the workpieces can be spaced to avoid the distance between the workpieces being too close, which affects the uniformity of heat transfer. The operation is simple, flexible and safer. The lowering parts are used to detect the position of the workpieces using micro switches to control the limit release of the cover. When the workpiece is placed in the partition frame, a pallet has been inserted into the blanking frame for support, ensuring the stability of the workpiece after placement and avoiding forgetting to install the pallet, which may cause the workpiece to fall and break directly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a powder metallurgy sintering furnace;

[0021] Figure 2 This is a schematic diagram of the tail structure of a powder metallurgy sintering furnace;

[0022] Figure 3 This is a cross-sectional view of the internal structure of a powder metallurgy sintering furnace;

[0023] Figure 4 It is a three-dimensional enlarged structural diagram of the mesh belt conveyor;

[0024] Figure 5 It is a schematic diagram of the three-dimensional enlarged structure of the steel mesh belt;

[0025] Figure 6 It is a schematic diagram of the three-dimensional enlarged structure of the support member;

[0026] Figure 7 for Figure 3 A magnified view of the structure of the middle C region;

[0027] Figure 8 This is a schematic diagram of the support bar installation position;

[0028] Figure 9 It is a three-dimensional enlarged structural diagram of the lifting and placing parts;

[0029] Figure 10 It is a schematic diagram of the three-dimensional enlarged structure of the lowering part;

[0030] Figure 11 for Figure 10 A magnified view of the structure of region E in the middle.

[0031] Reference numerals:

[0032] 1. Sintering device; 101. Sintering furnace shell; 1011. Guide block; 1012. Operating table; 1013. Shielding cover; 102. Conveying mounting frame; 103. Flame nozzle; 104. Electric heating wire; 2. Mesh belt conveyor; 201. Conveying motor; 202. Mesh belt conveyor roller; 203. Steel mesh belt; 3. Support member; 3011. Support bar; 301. Support frame; 302. Support plate; 4. Spacer pushing member; 401. Spacer pushing frame; 4011. Swing column; 402. Lifting plate; 5. Lifting and placing member; 501. Lifting shaft; 502. Unloading frame; 503. Baffle; 504. Partition frame; 505. Electromagnet; 506. Cover plate; 507. Flip baffle; 6. Lowering member; 601. Support plate; 6011. Clamp; 602. Micro switch.

[0033] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0034] The following describes a powder metallurgy sintering furnace provided by the present invention in detail with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are optimal and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0035] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0036] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0037] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0038] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0039] like Figures 1 to 11As shown, an embodiment of the present invention provides a powder metallurgy sintering furnace, including a sintering device 1, a mesh belt conveyor 2 is installed on the sintering device 1, the mesh belt conveyor 2 is used to convey powder workpieces; a circle of support members 3 is installed on the mesh belt conveyor 2; a circle of support members 3 are respectively used to support the powder workpieces; a circle of support members 3 are respectively installed with spacer pushers 4; the spacer pushers 4 are used to increase the heating uniformity of the powder workpieces; a lifting and placing member 5 is installed on the sintering device 1; the lifting and placing member 5 is used to prevent scalding; a lowering member 6 is installed on the sintering device 1; the lowering member 6 is used to prevent falling damage; the sintering device 1 includes: a sintering furnace shell 101 and a guide block 1011, a furnace chamber is provided inside the sintering furnace shell 101; a row of guide blocks 1011 are fixedly installed on both sides of the furnace chamber of the sintering furnace shell 101, and the two sides of the guide block 1011 are inclined structures.

[0040] like Figures 2 to 8As shown, the sintering device 1 further includes an operating table 1012 fixedly mounted on the sintering furnace shell 101; a shielding cover 1013 is fixedly mounted on the operating table 1012; a conveying mounting frame 102 is fixedly mounted on the sintering furnace shell 101; the conveying mounting frame 102 passes through the furnace of the sintering furnace shell 101; a row of flame nozzles 103 is fixedly mounted on the conveying mounting frame 102; a row of electric heating wires 104 is fixedly mounted on the conveying mounting frame 102; a row of electric heating wires 104 is respectively located below a row of flame nozzles 103; The belt conveyor 2 includes a conveying motor 201 fixedly mounted on the conveying mounting frame 102; the output shaft of the conveying motor 201 passes through the conveying mounting frame 102; two mesh belt conveying rollers 202 are rotatably mounted on the conveying mounting frame 102; the output shaft of the conveying motor 201 is fixedly mounted on the mesh belt conveying roller 202 on the same side; a steel mesh belt 203 is respectively rolled and sleeved on the two mesh belt conveying rollers 202; the steel mesh belt 203 is located outside the conveying mounting frame 102; the steel mesh belt 203 is a steel mesh fireproof structure; the support member 3 includes a circle of fixed The support bar 3011 is installed on the steel mesh belt 203; the structure of the support bar 3011 is the same, and the support frame 301 is fixedly installed on the support bar 3011; the two sides of the bottom of the support frame 301 are respectively attached to the steel mesh belt 203; the support bar 3011 is a strip structure; a row of support sheets 302 are fixedly installed on the support frame 301, and each row of support sheets 302 is provided with a groove; each row of support sheets 302 is used to place powder workpieces; a circle of support frames 301 are respectively aligned with a row of flame nozzles 103; a row of flame nozzles 103 They are respectively connected to an external air source; the spacer pushing member 4 includes a spacer pushing frame 401 slidably mounted on the support frame 301; swing columns 4011 are fixedly mounted at both ends of the spacer pushing frame 401; the two swing columns 4011 respectively pass through the support frame 301; the two swing columns 4011 are respectively aligned with two rows of guide blocks 1011; the two rows of guide blocks 1011 are respectively used to move the swing columns 4011 upward; a row of lifting plates 402 is fixedly mounted on the support frame 301, and the row of lifting plates 402 is respectively slidably inserted into a row of support plates 302;When a row of lifting plates 402 is raised, its height is higher than a row of supporting plates 302. The mesh belt conveyor 2 and the supporting member 3 are used to support the movement of the workpiece for sintering. It is efficient and flexible, ensuring flexibility of use while facilitating the conveyance of the workpiece. At the same time, it can cooperate with the spacer pushing member 4 to push the workpiece, avoiding that a single position of the workpiece is always supported and blocked by the supporting plate 302. It can be used to support the position of the workpiece blocked by the supporting plate 302, so that the blocked area can be heated evenly, thereby improving the molding quality of the workpiece. The heat transfer in the steel wire blocking area of ​​the steel mesh belt 203 is blocked, and the actual sintering temperature at the bottom of the workpiece is lower than the set value, resulting in insufficient particle diffusion and increased porosity. This reduces local density and strength. The differential thermal expansion between the shielded and unshielded areas induces internal stress, which can easily cause warping or microcracks during cooling. As the support frame 301 moves to the flame nozzle 103, the flame nozzle 103 can spray flames to heat the workpiece. As the support frame 301 moves, the spacer pusher 4 is also driven to move. When the swing column 4011 approaches the contact guide block 1011, the inclined surface of the guide block 1011 compresses and guides the swing column 4011, driving the spacer pusher frame 401 upward. This, in turn, drives the lifting plate 402 upward to contact and support the workpiece, preventing the bottom of the workpiece from being constantly blocked by the support plate 302 and improving heating uniformity.

[0041] like Figures 2 to 10As shown, the lifting and placing member 5 includes two lifting shafts 501 slidably mounted on the operating table 1012; a blanking frame 502 is fixedly mounted on the two lifting shafts 501; a handle is installed on the blanking frame 502; springs are respectively sleeved on the two lifting shafts 501, and the springs on the lifting shafts 501 are connected between the blanking frame 502 and the operating table 1012; the handle on the blanking frame 502 is used to manually press down the blanking frame 502; the lifting and placing member 5 also includes two baffles 503 fixedly mounted on the bottom of the blanking frame 502; two The baffles 503 are respectively plugged into the operating table 1012; the two baffles 503 are respectively used for shielding and protection; a partition frame 504 is fixedly installed on the blanking frame 502; the partition frame 504 is used to separate the powder workpiece; there is a gap between the blanking frame 502 and the support frame 301 on the same side to prevent burns; the lifting and placing part 5 also includes an electromagnet 505 fixedly installed on the blanking frame 502; a cover plate 506 is rotatably installed on the blanking frame 502, and the cover plate 506 is iron metal; the electromagnet 505 is located below the cover plate 506; the electromagnet 505 is used for magnetically attracting the cover plate 506; a flip baffle 507 is fixedly installed on the blanking frame 502, and the flip baffle 507 is an L-shaped structure. The flip baffle 507 is used to limit the maximum angle of the cover plate 506 after opening to no more than ninety degrees, so that the cover plate 506 can fall back naturally; the flip baffle 507 is used to block the cover plate 506. The use of the lifting and placing member 5 can improve the safety of the staff when placing the workpiece for heating, and avoid the support frame 301 with residual temperature after heating to scald the staff. The lifting and placing member 5 can be used to The workpieces are placed on top first and then dropped down. The structure is simple and reasonable. At the same time, the workpieces can be spaced apart to avoid being too close to each other, which affects the uniformity of heat transfer. The structure is simple, flexible and safer to operate. The staff presses down the handle on the blanking frame 502 with one hand to compress the spring on the lifting shaft 501 until the blanking frame 502 is attached to the support frame 301. At this time, the staff holds the buckle 6011 with the other hand to pull out the support plate 601, which no longer blocks the supported workpiece. During the process, the staff does not touch the support frame 301 to prevent burns.

[0042] like Figures 9 to 11As shown, the lowering member 6 includes a support plate 601 that is slidably inserted into the blanking frame 502; the support plate 601 passes through the blanking frame 502; both sides of the end of the support plate 601 are chamfered; a buckle 6011 is provided on the support plate 601; the support plate 601 is located below the partition frame 504; the lowering member 6 also includes a micro switch 602 fixedly mounted on the side of the blanking frame 502; the end of the micro switch 602 is aligned with the support plate 601; the micro switch 602 is electrically connected to the electromagnet 505, and the lowering member 6 is used to detect the position of the micro switch 602, which can be used to control the limit release of the cover plate 506. Work, ensure that when the workpiece is placed in the partition frame 504, the support plate 601 has been inserted into the blanking frame 502 for support, to ensure the stability of the workpiece after placement, to avoid forgetting to install the support plate 601 and causing the workpiece to fall and break directly, the structure is more reasonable, the operation is simple, the support plate 601 needs to be inserted into the blanking frame 502 first, as the blanking frame 502 is inserted, the side of the support plate 601 will squeeze the micro switch 602, at this time the micro switch 602 can control the electromagnet 505 to cut off the power, at this time the electromagnet 505 no longer magnetically attracts the cover plate 506, the cover plate 506 can be opened normally to place the workpiece.

[0043] The working principle provided by the present invention is as follows: first, the powder workpiece blank is heated by the electric heating wire 104 and the flame nozzle 103 is used for heating. The partition frame 504 is used for spacing. The steel mesh belt 203 is controlled to drive the support frame 301 to align under the blanking frame 502. The support plate 601 is supported at the bottom. Then the staff presses down the handle on the blanking frame 502 with one hand to compress the spring on the lifting shaft 501 until the blanking frame 502 is attached to the support frame 301. At this time, the staff holds the buckle 6011 with the other hand to pull out the support plate 601, which no longer blocks the supported workpiece, and the workpiece can fall to a row of support sheets. 302, the manual process does not touch the support frame 301, to prevent burns, because the thickness of the support plate 601 is relatively thin, will not cause the workpiece to fall directly and be damaged, after the subsequent release of the material frame 502, the spring on the lifting shaft 501 can push the material frame 502 to elastically move up and reset, at this time the mesh belt conveyor roller 202 can be driven by the conveying motor 201 to drive the steel mesh belt 203 for conveying, and the support frame 301 is also driven to move during the process, and as the support frame 301 moves, the support bar 3011 is installed on the steel mesh belt 203, and its narrow strip structure does not affect the steel mesh belt 203 passing through the mesh belt conveyor roller 202, and as the support frame 301 moves When the workpiece is moved to the flame nozzle 103, the flame nozzle 103 can spray fire to heat the workpiece. When the support frame 301 moves, the spacer pusher 4 is also driven to move. When the swing column 4011 is close to the fitting guide block 1011, the inclined surface structure of the guide block 1011 can be used to squeeze and guide the swing column 4011, driving the spacer pusher frame 401 to move upward, thereby driving the lifting piece 402 to move upward to fit and support the workpiece, avoiding the bottom of the workpiece being blocked by the support piece 302 all the time, improving the uniformity of heating, and as the swing column 401 continues to move, it can slide over the guide block 1011. At this time, the spacer pusher frame 401 is also under the action of gravity. It will fall back naturally; when the workpiece needs to be placed in the partition frame 504, the support plate 601 needs to be inserted into the blanking frame 502 first. After the blanking frame 502 is inserted, the side of the support plate 601 will squeeze the micro switch 602. At this time, the micro switch 602 can control the electromagnet 505 to cut off the power. At this time, the electromagnet 505 no longer magnetically attracts the cover plate 506. The cover plate 506 can be opened normally to place the workpiece. As the workpiece is placed, the cover plate 506 naturally falls close to the electromagnet 505. After the support plate 601 is pulled out from the blanking frame 502, the electromagnet 505 will magnetically attract the cover plate 506 again, so that the support plate 601 can be confirmed to be in place again when used next time.

[0044] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A powder metallurgy sintering furnace, comprising a sintering device, wherein a mesh belt conveyor is installed on the sintering device, characterized in that: The mesh belt conveyor is used to convey the powder workpiece; a circle of support members is installed on the mesh belt conveyor; each circle of support members is used to support the powder workpiece; A circle of support members are respectively provided with spacer pushers; the spacer pushers are used to increase the heating uniformity of the powder workpiece; The sintering device is equipped with a lifting and placing member; the lifting and placing member is used to prevent scalding; The sintering device is equipped with a lowering member, which is used to prevent damage from falling. The sintering device comprises: a sintering furnace shell and guide blocks, wherein a furnace is provided inside the sintering furnace shell; a row of guide blocks are fixedly installed on both sides of the furnace of the sintering furnace shell, and both sides of the guide blocks are inclined structures; A conveying mounting frame is fixedly mounted on the sintering furnace shell; two mesh belt conveying rollers are rotatably mounted on the conveying mounting frame; a steel mesh belt is respectively rotatably sleeved on the two mesh belt conveying rollers; the support member includes a circle of support bars fixedly mounted on the steel mesh belt; the structure of the circle of support bars is the same, and a support frame is fixedly mounted on the support bars; a row of support sheets is fixedly mounted on the support frame; The spacing pushing member includes a spacing pushing frame slidably mounted on the support frame; swing columns are fixedly mounted on both ends of the spacing pushing frame; two swing columns pass through the support frame respectively; the two swing columns are aligned with two rows of guide blocks respectively; the two rows of guide blocks are used to move the swing columns upward; a row of lifting plates is fixedly mounted on the support frame, and a row of lifting plates is slidably inserted into a row of support plates; when a row of lifting plates is raised, its height is higher than that of a row of support plates.

2. The powder metallurgy sintering furnace according to claim 1, characterized in that: The sintering device also includes an operating table fixedly mounted on the sintering furnace shell; a shielding cover is fixedly mounted on the operating table; the conveying mounting frame passes through the furnace of the sintering furnace shell; a row of flame nozzles is fixedly mounted on the conveying mounting frame; a row of electric heating wires is fixedly mounted on the conveying mounting frame; a row of the electric heating wires is respectively located under a row of flame nozzles.

3. The powder metallurgy sintering furnace according to claim 2, characterized in that: The mesh belt conveyor includes a conveying motor fixedly mounted on a conveying mounting frame; the output shaft of the conveying motor passes through the conveying mounting frame; the output shaft of the conveying motor is fixedly mounted on the mesh belt conveying roller on the same side; the steel mesh belt is located outside the conveying mounting frame; the steel mesh belt is a steel mesh fireproof structure.

4. The powder metallurgy sintering furnace according to claim 3, characterized in that: The two sides of the bottom of the support frame are respectively attached to the steel mesh belt; the support bar is a strip structure; a row of support plates are respectively provided with grooves; a row of support plates are respectively used to place powder workpieces; a circle of the support frame is respectively aligned with a row of flame nozzles; a row of flame nozzles are respectively connected to an external gas source.

5. The powder metallurgy sintering furnace according to claim 4, characterized in that: The lifting and placing component includes two lifting shafts slidably installed on the operating table; a blanking frame is fixedly installed on the two lifting shafts; a handle is installed on the blanking frame; springs are respectively sleeved on the two lifting shafts, and the springs on the lifting shafts are connected between the blanking frame and the operating table; the handle on the blanking frame is used to manually press down the blanking frame.

6. The powder metallurgy sintering furnace according to claim 5, characterized in that: The lifting and placing parts also include two baffles fixedly installed on the bottom of the blanking frame; the two baffles are respectively plugged into the operating table; the two baffles are respectively used for shielding and protection; a partition frame is fixedly installed on the blanking frame; the partition frame is used to separate powder workpieces; there is a distance between the blanking frame and the support frame on the same side to prevent burns.

7. The powder metallurgy sintering furnace according to claim 6, characterized in that: The lifting and placing component also includes an electromagnet fixedly installed on the blanking frame; a cover plate is rotatably installed on the blanking frame, and the cover plate is iron metal; the electromagnet is located below the cover plate; the electromagnet is used to magnetically attract the cover plate; a flip baffle is fixedly installed on the blanking frame, and the flip baffle is an L-shaped structure; the flip baffle is used to cover the cover plate.

8. The powder metallurgy sintering furnace according to claim 6, characterized in that: The lowering member includes a support plate that is slidably inserted into the blanking frame; the support plate passes through the blanking frame; both sides of the end of the support plate are chamfered; a buckle is provided on the support plate; and the support plate is located below the partition frame.

9. The powder metallurgy sintering furnace according to claim 8, characterized in that: The lowering member further comprises a micro switch fixedly mounted on the side of the blanking frame; the end of the micro switch is aligned with the support plate; and the micro switch is electrically connected to the electromagnet.

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