Powder metallurgy sintering furnace

Abstract

The invention provides a powder metallurgy sintering furnace, and belongs to the technical field of sintering furnaces. Comprising a sintering device, a mesh belt conveying piece is installed on the sintering device, and the mesh belt conveying piece is used for conveying powder workpieces; a circle of supporting pieces are mounted on the mesh belt conveying piece; the circle of supporting pieces are used for supporting powder workpieces respectively. Interval pushing pieces are respectively mounted on the circle of supporting pieces; the interval pushing piece is used for improving the heating uniformity of the powder workpiece; a lifting placing piece is mounted on the sintering device; the lifting placing piece is used for preventing scalding. By arranging the mesh belt conveying piece and the supporting piece, the workpiece can be supported to move for sintering work efficiently and flexibly, meanwhile, the interval pushing piece can be matched to push the workpiece, and the situation that the single position of the workpiece is always supported, attached and shielded by the supporting piece is avoided; the problems that an existing powder metallurgy sintering furnace is not convenient to automatically control and prevent shielding, and meanwhile the safety is poor when a workpiece is filled into the sintering furnace are solved.

Description

Technical Field

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

[0002] The working principle of a powder metallurgy sintering furnace is as follows: for example, for a gear workpiece, first, metal powder is stamped into shape to obtain a blank of the powder workpiece. At this time, its strength after stamping is poor. Through high-temperature heating, diffusion, fusion, and densification occur between metal or non-metal powder particles, and finally a solid material or part with specific properties is formed. The sintering furnace is the key to the forming quality of powder metallurgy workpieces.

[0003] Currently, powder metallurgy sintering furnaces usually use a mesh belt to convey workpieces. The workpieces are easily blocked by the metal wires of the mesh belt, affecting the comprehensiveness of heat reception, and it is not convenient for automatic anti-blocking control. At the same time, the safety of the workpieces when placed in the sintering furnace is not good. If a person touches the mesh belt, it will cause burns, and it is not convenient to control the isolated placement of the workpieces. At the same time, when manually placing the blank of the powder metallurgy workpiece after stamping, in order to prevent burns, it is usually necessary to place it quickly. The strength of the blank is poor and it is easy to be knocked and broken. Therefore, the present application provides a powder metallurgy sintering furnace to meet the requirements. 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 anti-blocking control and the safety of the workpieces when placed in the sintering furnace is not good.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A powder metallurgy sintering furnace includes a sintering device, on which a mesh belt conveyor is installed. The mesh belt conveyor is used to convey powder workpieces; a circle of support members is installed on the mesh belt conveyor; the circle of support members are respectively used to support the powder workpieces; a circle of spaced pushing members are respectively installed on the circle of support members; the spaced pushing members are used to increase the heat uniformity of the powder workpieces; a lifting and placing member is installed on the sintering device; the lifting and placing member is used to prevent burns; a lowering member is installed on the sintering device; the lowering member is used to prevent dropping and damage; the sintering device includes: a sintering furnace housing and guiding blocks. A furnace chamber is provided inside the sintering furnace housing; a row of guiding blocks are respectively fixedly installed on both sides inside the furnace chamber of the sintering furnace housing, and the two sides of the guiding blocks are inclined plane structures.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] Optionally, the lifting and placing member further includes an electromagnet fixedly installed on the blanking frame; a cover plate is rotatably installed 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 turning baffle is fixedly installed on the blanking frame, and the turning baffle is in an L-shaped structure; the turning baffle is used to block the cover plate.

[0013] Optionally, the lowering member includes a support plate slidably inserted on the blanking frame; the support plate penetrates through the blanking frame; both sides of the end of the support plate are chamfered; a handle is provided on the support plate; the support plate is located below the partition frame.

[0014] Optionally, the lowering member further includes a microswitch fixedly installed on the side of the blanking frame; the end of the microswitch is aligned with the support plate; the microswitch is electrically connected to the electromagnet.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, through the mesh belt conveyor and the support member, the movement of the supported workpiece for sintering work can be realized, which is efficient and flexible. While ensuring the flexibility of use, it is convenient to convey the workpiece. At the same time, it can cooperate with the interval pushing member to push the workpiece, avoiding the situation that the workpiece is always supported and covered by the support piece at a single position. It can be used to support the position of the workpiece blocked by the support piece, so that the blocked part can be heated evenly, improving the forming quality of the workpiece and ensuring sufficient particle diffusion.

[0016] By setting the lifting and placing member, the safety of the staff when placing the workpiece for heating can be improved, avoiding scalding the staff by the support frame with residual temperature after heating. The lifting and placing member is used to place the workpiece above first and then drop it. The structure is simple and reasonable. At the same time, it can space the workpieces to avoid the distance between the workpieces being too close, affecting the uniformity of heat transfer. The operation is simple and flexible, and safer. The lowering member is adopted, and the microswitch is used for in-place detection to control the release of the limit of the cover plate, ensuring that when the workpiece is placed in the partition frame, the support plate has been inserted into the blanking frame for support, guaranteeing the stability of the workpiece after placement and avoiding the workpiece directly falling and breaking due to forgetting to install the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0018] Figure 1 It is a three-dimensional structure schematic diagram of a powder metallurgy sintering furnace; Figure 2 It is a schematic diagram of the tail structure of a powder metallurgy sintering furnace; Figure 3It is a cross-sectional view of the internal structure of a powder metallurgy sintering furnace; Figure 4 It is a three-dimensional enlarged structural schematic diagram of a mesh belt conveyor; Figure 5 It is a three-dimensional enlarged structural schematic diagram of a steel mesh belt; Figure 6 It is a three-dimensional enlarged structural schematic diagram of a support; Figure 7 It is Figure 3 The enlarged view of the structure of area C in Figure 8 It is a schematic diagram of the installation position of the support bar; Figure 9 It is a three-dimensional enlarged structural schematic diagram of a lifting and placing part; Figure 10 It is a three-dimensional enlarged structural schematic diagram of a lowering part; Figure 11 It is Figure 10 The enlarged view of the structure of area E in

[0019] Reference numerals: 1. Sintering device; 101. Sintering furnace housing; 1011. Guide block; 1012. Operating table; 1013. Shielding cover; 102. Conveyor mounting frame; 103. Flame spray head; 104. Electric heating wire; 2. Mesh belt conveyor; 201. Conveyor motor; 202. Mesh belt conveyor roller; 203. Steel mesh belt; 3. Support; 3011. Support bar; 301. Support frame; 302. Support plate; 4. Spacing push member; 401. Spacing push frame; 4011. Swing column; 402. Lifting plate; 5. Lifting and placing part; 501. Lifting shaft; 502. Feeding frame; 503. Baffle; 504. Partition frame; 505. Electromagnet; 506. Cover plate; 507. Flipping baffle; 6. Lowering part; 601. Support plate; 6011. Handle; 602. Microswitch.

[0020] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0021] The following describes in detail a powder metallurgy sintering furnace provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0022] It should be noted that in the specification, the mention of "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicates that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. Additionally, when describing a specific feature, structure or characteristic in combination with an embodiment, implementing such a feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0023] Generally, terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.

[0024] It can be understood that the meanings of "on", "above" and "over" in the present invention should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0025] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device other than the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0026] As Figures 1 to 11As shown in the figure, an embodiment of the present invention provides a powder metallurgy sintering furnace, including a sintering device 1, on which a mesh belt conveyor 2 is installed, and 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; the circle of support members 3 are respectively used to support the powder workpieces; a circle of interval pushing members 4 are respectively installed on the circle of support members 3; the interval pushing members 4 are used to increase the uniform heating 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 housing 101 and a guiding block 1011, and a furnace chamber is provided inside the sintering furnace housing 101; a row of guiding blocks 1011 are respectively fixedly installed on both sides inside the furnace chamber of the sintering furnace housing 101, and both sides of the guiding block 1011 are inclined surface structures.

[0027] As 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 pieces 402 rises, its height is higher than that of a row of supporting pieces 302. By using the mesh belt conveyor 2 and the support 3, the movement of the supported workpiece for sintering can be realized, which is efficient and flexible. While ensuring the flexibility of use, it is convenient for conveying the workpiece. At the same time, it can cooperate with the intermittent pushing piece 4 to push the workpiece, avoiding the workpiece being continuously supported and covered by the supporting piece 302 at a single position. It can be used to support the position of the workpiece covered by the supporting piece 302, so that the covered area can be heated evenly, improving the forming quality of the workpiece. The heat transfer in the wire shielding 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, increased porosity, reduced local density and strength. The thermal expansion difference between the shielding area and the non-shielding area causes internal stress, and warping deformation or microcracks are likely to occur during cooling. As the support frame 301 moves to the flame nozzle 103, the flame nozzle 103 can then spray fire to heat the workpiece. When the support frame 301 moves, the intermittent pushing piece 4 is also driven to move. When the swing column 4011 approaches and fits the guiding block 1011, the inclined surface structure of the guiding block 1011 can be used to squeeze and guide the swing column 4011, driving the intermittent pushing frame 401 to move upward, thereby driving the lifting piece 402 to move upward and fit to support the workpiece, avoiding the bottom of the workpiece being continuously covered by the supporting piece 302 and improving the heating uniformity.;

[0028] Such as 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 mounted 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 further includes two baffles 503 fixedly mounted on the bottom of the blanking frame 502; the two baffles 503 are respectively inserted into the operating table 1012; the two baffles 503 are respectively used for shielding and protection; a partition frame 504 is fixedly mounted on the blanking frame 502; the partition frame 504 is used to separate powder workpieces; there is a gap between the blanking frame 502 and the supporting frame 301 on the same side for preventing scalding; the lifting and placing member 5 further includes an electromagnet 505 fixedly mounted on the blanking frame 502; a cover plate 506 is rotatably mounted on the blanking frame 502, and the cover plate 506 is made of iron metal; the electromagnet 505 is located below the cover plate 506; the electromagnet 505 is used to magnetically attract the cover plate 506; a turning baffle 507 is fixedly mounted on the blanking frame 502, and the turning baffle 507 is in an L-shaped structure. The turning baffle 507 is used to limit the maximum opening angle of the cover plate 506 after opening to not exceed ninety degrees, so that the cover plate 506 can naturally fall back; the turning baffle 507 is used to shield the cover plate 506. The use of the lifting and placing member 5 can improve the safety of the staff when placing workpieces for heating, avoid scalding the staff by the supporting frame 301 that still has residual heat after heating. The lifting and placing member 5 can be used to place workpieces above first and then drop them. The structure is simple and reasonable. At the same time, it can space apart each workpiece to avoid the distance between each workpiece being too close, which affects the uniformity of heat transfer. The structure is simple and flexible to operate, and safer. The staff presses down the handle on the blanking frame 502 with one hand, compressing the springs on the lifting shafts 501 until the blanking frame 502 is attached to the supporting frame 301. At this time, the staff holds the buckle 6011 with the other hand and pulls out the tray 601, no longer shielding and supporting the workpiece. During the process, the staff does not touch the supporting frame 301 throughout, preventing scalding.

[0029] As 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 penetrates through the blanking frame 502; both sides of the end of the support plate 601 are chamfered; a handle 6011 is provided on the support plate 601; the support plate 601 is located below the partition frame 504; the lowering member 6 further includes a microswitch 602 fixedly installed on the side of the blanking frame 502; the end of the microswitch 602 is aligned with the support plate 601; the microswitch 602 is electrically connected to the electromagnet 505. By using the lowering member 6 and detecting the in-place state with the microswitch 602, it can be used to control the release of the limit of the cover plate 506. Ensure that when placing the workpiece in the partition frame 504, the support plate 601 has been inserted into the blanking frame 502 for support, guarantee the stability of the workpiece after placement, and avoid the workpiece directly falling and breaking due to forgetting to install the support plate 601. The structure is more reasonable and the operation is simple. It is necessary to first insert the support plate 601 into the blanking frame 502. As the blanking frame 502 is inserted, the side of the support plate 601 will squeeze the microswitch 602. At this time, the microswitch 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, and the cover plate 506 can be normally opened to place the workpiece. [[ID=?]] [[ID=?]]

[0030] It should be noted that the tags and

[0030] seem to be some kind of specific identifiers without clear semantic meaning in the context, so they are just copied as they are. If there is more context or specific requirements for these tags, the translation might need to be adjusted accordingly.The working principle provided by the present invention is as follows. First, through the heating of the electric heating wire 104 and the cooperation of the flame nozzle 103 for spraying fire to heat, the blank of the powder workpiece is first placed in the partition frame 504. The partition frame 504 is used for spacing. The steel mesh belt 203 is controlled to drive the support frame 301 to align below the blanking frame 502, and the support plate 601 supports at the bottom. Subsequently, a worker presses the handle on the blanking frame 502 with one hand, compressing the spring on the lifting shaft 501 until the blanking frame 502 adheres to the support frame 301. At this time, the worker holds the buckle 6011 with the other hand and pulls out the support plate 601, no longer blocking the supported workpiece, and the workpiece can fall onto a row of support pieces 302. During the process, the worker does not come into contact with the support frame 301 throughout, preventing burns. Because the thickness of the support plate 601 is relatively thin, it will not cause direct damage to the workpiece due to dropping. After releasing the blanking frame 502 later, the spring on the lifting shaft 501 can push the blanking frame 502 to move upward elastically and reset. At this time, the conveying motor 201 can be used to drive the mesh belt conveying roller 202 to drive the steel mesh belt 203 for conveying. During the process, the support frame 301 is also driven to move. 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 passage of the steel mesh belt 203 through the mesh belt conveying roller 202. As the support frame 301 moves to the position of the flame nozzle 103, the flame nozzle 103 can then spray fire to heat the workpiece. When the support frame 301 moves, the spaced pushing member 4 is also driven to move. When the swing column 4011 approaches and adheres to the guiding block 1011, due to the inclined surface structure of the guiding block 1011, the swing column 4011 can be squeezed to drive the spaced pushing frame 401 to move upward, thereby driving the lifting piece 402 to move upward and support the workpiece, avoiding the bottom of the workpiece being blocked by the support pieces 302 all the time and improving the heating uniformity. As the swing column 4011 continues to move, it can slide over the guiding block 1011. At this time, the spaced pushing frame 401 naturally falls back under the action of gravity; 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 microswitch 602. At this time, the microswitch 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, and the cover plate 506 can be normally opened to place the workpiece. As the workpiece placement is completed, the cover plate 506 naturally falls close to the electromagnet 505. After the support plate 601 is pulled out from the blanking frame 502 later, the electromagnet 505 will magnetically attract the cover plate 506 again, facilitating the confirmation of the in-place of the support plate 601 for the next use.

[0031] The present invention encompasses any alternatives, modifications, equivalent methods, and solutions within the spirit and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A powder metallurgy sintering furnace, comprising a sintering device, on which a mesh belt conveyor is installed, characterized in that, The belt conveyor is used to convey powder workpieces; a circle of support members is installed on the belt conveyor; a circle of the support members are respectively used to support the powder workpieces; A circle of spacer push members are respectively installed on a circle of the support members; the spacer push members are used to increase the uniformity of heat received by the powder workpieces; A lifting and placing member is installed on the sintering device; the lifting and placing member is used to prevent scalding; A lowering member is installed on the sintering device; the lowering member is used to prevent falling damage; The sintering device includes: a sintering furnace housing and guide blocks. A furnace chamber is provided inside the sintering furnace housing; a row of guide blocks are respectively and fixedly installed on both sides inside the furnace chamber of the sintering furnace housing, and the two sides of the guide blocks are inclined surface structures.

2. The powder metallurgy sintering furnace according to claim 1, characterized in that The sintering device further includes an operating platform fixedly installed on the sintering furnace housing; a shielding cover is fixedly installed on the operating platform; a conveying mounting frame is fixedly installed on the sintering furnace housing; the conveying mounting frame passes through the furnace chamber of the sintering furnace housing; a row of flame nozzles are fixedly installed on the conveying mounting frame; a row of electric heating wires are fixedly installed on the conveying mounting frame; a row of the electric heating wires are respectively located below a row of the flame nozzles.

3. The powder metallurgy sintering furnace according to claim 2, characterized in that, The belt conveyor includes a conveying motor fixedly installed on the conveying mounting frame; the output shaft of the conveying motor passes through the conveying mounting frame; two belt conveyor rollers are rotatably installed on the conveying mounting frame; the output shaft of the conveying motor is fixedly installed on the belt conveyor roller on the same side; steel mesh belts are respectively and rotatably sleeved on the two belt conveyor rollers; the steel mesh belts are located outside the conveying mounting frame; the steel mesh belts are of a steel mesh fireproof structure.

4. The powder metallurgy sintering furnace according to claim 3, characterized in that, The support members include a circle of support bars fixedly installed on the steel mesh belts; the structures of a circle of support bars are the same. Support frames are fixedly installed on the support bars; both sides of the bottom of the support frames are respectively attached to the steel mesh belts; the support bars are of a strip structure; a row of support pieces are fixedly installed on the support frames; grooves are respectively provided on a row of support pieces; a row of support pieces are respectively used to place the powder workpieces; a circle of the support frames are respectively aligned with a row of flame nozzles; a row of flame nozzles are respectively externally connected to a gas source.

5. The powder metallurgy sintering furnace according to claim 4, characterized in that, The spacer push members include spacer push frames slidably installed on the support frames; swing columns are respectively fixedly installed at both ends of the spacer push frames; the two swing columns respectively pass through the support frames; the two swing columns are respectively aligned with two rows of guide blocks; the two rows of guide blocks are respectively used to push the swing columns to move upward; a row of lifting pieces are fixedly installed on the support frames; a row of lifting pieces are respectively slidably inserted into a row of support pieces; when a row of lifting pieces rise, their heights are higher than those of a row of support pieces.

6. The powder metallurgy sintering furnace according to claim 4, wherein The lifting and placing member includes two lifting shafts slidably installed on the operating platform; 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 platform; the handle on the blanking frame is used to manually press down the blanking frame.

7. The powder metallurgy sintering furnace according to claim 6, characterized in that, The lifting and placing member further includes two baffles fixedly installed at the bottom of the blanking frame; the two baffles are respectively inserted 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 for separating powder workpieces; there is a spacing between the blanking frame and the supporting frame on the same side for preventing scalding.

8. The powder metallurgy sintering furnace according to claim 7, characterized in that, The lifting and placing member further includes an electromagnet fixedly installed on the blanking frame; a cover plate is rotatably installed on the blanking frame, and the cover plate is made of ferromagnetic metal; the electromagnet is located below the cover plate; the electromagnet is used for magnetically attracting the cover plate; a turning baffle is fixedly installed on the blanking frame, and the turning baffle is of an L-shaped structure; the turning baffle is used for shielding the cover plate.

9. The powder metallurgy sintering furnace according to claim 7, characterized in that, The lowering member includes a tray slidably inserted on the blanking frame; the tray penetrates through the blanking frame; both ends of the tray are chamfered; a handle is provided on the tray; the tray is located below the partition frame.

10. The powder metallurgy sintering furnace according to claim 9, wherein, The lowering member further includes a microswitch fixedly installed on the side of the blanking frame; the end of the microswitch is aligned with the tray; the microswitch is electrically connected to the electromagnet.

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