Pushing device and vacuum sintering furnace

Abstract

The utility model discloses a pushing device and a vacuum sintering furnace, and relates to the technical field of vacuum sintering furnaces. The material pushing device is installed on a vacuum sintering furnace body, an installation block is fixedly installed on one side of the vacuum sintering furnace body, the upper surface of the installation block is fixedly connected with a driving assembly, the installation block is connected with a positioning column in a sliding mode in the direction of the central axis of the vacuum sintering furnace body, and the positioning column is fixedly connected with the driving assembly. The driving assembly is used for driving the positioning column to move front and back, and a rotating assembly is rotationally arranged at the end, away from the mounting block, of the positioning column. The material pushing device is arranged outside the furnace body of the vacuum sintering furnace, so that the limitation of materials for producing the material pushing device is smaller, the space in the furnace body of the vacuum sintering furnace is prevented from being occupied, the space in the furnace body of the vacuum sintering furnace is larger, the material pushing device is easier to maintain, and the service life of the material pushing device is prolonged. And therefore, the material sintering efficiency of the vacuum sintering furnace is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum sintering furnace technology, and specifically relates to a feeding device and a vacuum sintering furnace. Background Technology

[0002] A vacuum sintering furnace is a furnace that performs protective sintering of heated materials in a vacuum environment. It employs various heating methods, such as resistance heating, induction heating, and microwave heating. Vacuum sintering furnaces utilize induction heating for protective sintering of heated materials and can be categorized into types such as power frequency, medium frequency, and high frequency, and can be classified as a subcategory of vacuum sintering furnaces.

[0003] Existing patent CN201922141204.8 describes a horizontal vacuum sintering furnace. This furnace features an internal pushing structure. A folding frame and a pushing plate are located on the inner left side of the combustion chamber, while an electric telescopic rod is located on the outer left side. When the electric telescopic rod retracts inward, the folding frame retracts vertically and extends horizontally. The pushing slider on the folding frame slides within the pushing groove on the pushing plate, causing the pushing plate to move horizontally to the right, thus pushing the formed material out of the sintering furnace. This structure automatically pushes the material out after it has been sintered into blocks, reducing the workload of operators and improving the efficiency of material handling.

[0004] However, in this comparative example, the pusher structure is located inside the vacuum sintering furnace. Because the sintering furnace is at a high temperature, the materials used to produce the pusher structure need to be heat-resistant, which increases the manufacturing cost of the pusher structure. Furthermore, placing the pusher structure inside the vacuum sintering furnace will occupy the internal space of the vacuum sintering furnace, thereby reducing the space available for sintering and processing, further reducing the working efficiency of the vacuum sintering furnace, and thus reducing the practicality of the vacuum sintering furnace. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a feeding device and a vacuum sintering furnace to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a material pushing device, which is installed on the furnace body of a vacuum sintering furnace. An installation block is fixedly installed on one side of the furnace body. A driving component is fixedly connected to the upper surface of the installation block. A positioning column is slidably connected to the installation block along the central axis of the furnace body. The positioning column is fixedly connected to the driving component, which drives the positioning column to move back and forth. A rotating component is rotatably installed at the end of the positioning column away from the installation block. The rotating component drives the material pushing component to rotate around the positioning column. A material pushing component is fixedly connected to the rotating component, which pushes material out of the vacuum sintering furnace body. A positioning component is installed on the rotating component, which locks the rotating component to the positioning column.

[0008] Furthermore, the drive assembly includes a motor, which is fixedly connected to the upper surface of the mounting block. A worm gear is fixedly connected to the rotation output shaft of the motor. A support block is fixedly connected to the left side surface of the mounting block. A support rod is rotatably sleeved on the support block via a bearing. A worm wheel is fixedly connected to the upper end of the support rod, and the worm wheel meshes with the worm gear. The lower end of the support rod is poweredly connected to the positioning column.

[0009] Furthermore, a first gear is fixedly connected to the lower end of the support rod, and the first gear meshes with a rack. A positioning block is fixedly connected to the rear end of the positioning column, and a rack is fixedly connected to the left side of the positioning block.

[0010] Furthermore, a slide rail groove is provided on the front surface of the mounting block, the slide rail groove extends out of the rear surface of the mounting block, the slide rail groove is slidably connected to the positioning block, the slide rail groove and the positioning block are fitted together, the slide rail groove and the positioning block are both square in shape, the support groove is provided on the left side surface of the mounting block, the support groove is connected to the inside of the slide rail groove, and the first gear extends into the positioning block through the support groove and meshes with the rack.

[0011] Furthermore, the rotating assembly includes a fixed ring, which is slidably sleeved on the outer surface of the positioning post. The inner wall of the fixed ring is provided with a sliding groove, and the vertical cross-section of the fixed ring is fan-shaped. A limit block is fixedly connected to the outer surface of the positioning post, and the limit block is slidably connected to the sliding groove.

[0012] Furthermore, the positioning component includes a first positioning hole and a second positioning hole, both of which are formed on the outer surface of the positioning post. The first positioning hole and the sliding groove are set at a 90-degree angle. A limit rod is slidably connected to the outer surface of the fixing ring. The limit rod slidably penetrates into the fixing ring. One end of the limit rod that slidably penetrates into the fixing ring is slidably connected to the second positioning hole or the first positioning hole. A positioning plate is fixedly connected to the end of the limit rod away from the positioning post. A positioning spring is fixedly connected between the positioning plate and the fixing ring. The positioning spring is slidably sleeved on the outer surface of the limit rod.

[0013] Furthermore, the pushing assembly includes a connecting rod, which is fixedly connected to the outer surface of the fixed ring. A pushing rod is fixedly connected to the end of the connecting rod away from the fixed ring, and a pushing plate is fixedly connected to the end of the pushing rod away from the connecting rod.

[0014] A vacuum sintering furnace includes a feeding device. Two bottom support frames are fixedly connected to the lower surface of the furnace body. Sealing covers are provided on both the front and rear sides of the furnace body. Multiple vertical rods are fixedly connected to the bottom wall of the furnace body. A sliding placement frame is fixedly connected to the upper end of each vertical rod. The sliding placement frame is U-shaped and a placement frame is slidably connected to the sliding placement frame. The rear surface of the push plate contacts the front surface of the placement frame.

[0015] This utility model has the following beneficial effects:

[0016] This invention places the feeding device outside the vacuum sintering furnace, which reduces the limitations of the materials used to produce the feeding device, avoids occupying space inside the vacuum sintering furnace, makes the space inside the vacuum sintering furnace more spacious, makes the feeding device easier to maintain, and thus ensures the sintering efficiency of the vacuum sintering furnace for materials.

[0017] This invention pushes the plate backward against the front surface of the placement frame, pushing the placement frame backward into the vacuum sintering furnace. This also pushes the sintered material in the placement frame out of the vacuum sintering furnace, thus achieving rapid material discharge and facilitating quick material removal. It also increases the safety of the pushing device and the vacuum sintering furnace, thereby increasing the practicality of the pushing device and the vacuum sintering furnace.

[0018] This utility model uses a limiting rod to slide into the first positioning hole to position the fixing ring, and to position the current state of the connecting rod, the pushing rod, and the pushing plate. This ensures the stability of the pushing plate's forward and backward movement, thereby ensuring the stability of the pushing plate moving backward to push the placement frame out of the vacuum sintering furnace, and thus ensuring the stability of the material being pushed out of the vacuum sintering furnace, thereby increasing the stability of the pushing device and the vacuum sintering furnace.

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

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

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 for Figure 1 Enlarged view of point A;

[0023] Figure 3 This is a schematic diagram of the structure of the vacuum sintering furnace body of this utility model;

[0024] Figure 4 This is a schematic diagram of the positioning block of this utility model;

[0025] Figure 5 This is a vertical cross-sectional view of the positioning post and fixing ring of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Vacuum sintering furnace body; 2. Sealing cover; 3. Bottom support frame; 4. Mounting block; 5. Slide rail groove; 6. Positioning block; 7. Positioning column; 8. Rack; 9. Support groove; 10. Support block; 11. First gear; 12. Support rod; 13. Worm gear; 14. Worm; 15. Motor; 16. Fixing ring; 17. Connecting rod; 18. Push rod; 19. Push plate; 20. Positioning spring; 21. Positioning plate; 22. Sliding placement frame; 23. Placement frame; 24. First positioning hole; 25. Sliding groove; 26. Limiting block; 27. Second positioning hole; 28. Limiting rod. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-5 As shown, a feeding device is installed on the furnace body 1 of a vacuum sintering furnace. An installation block 4 is fixedly installed on one side of the furnace body 1. A driving assembly is fixedly connected to the upper surface of the installation block 4. A positioning column 7 is slidably connected to the installation block 4 along the central axis of the furnace body 1. The positioning column 7 is fixedly connected to the driving assembly, which drives the positioning column 7 to move back and forth. A rotating assembly is rotatably installed at the end of the positioning column 7 away from the installation block 4. The rotating assembly drives the feeding assembly to rotate around the positioning column 7. A feeding assembly is fixedly connected to the rotating assembly, which pushes material out of the furnace body 1. A positioning assembly is installed on the rotating assembly, which locks the rotating assembly to the positioning column 7.

[0031] During operation, the material is placed inside the vacuum sintering furnace body 1 for heating. When the heated material needs to be pushed out of the vacuum sintering furnace body 1, the pushing component is first moved along the central axis of the vacuum sintering furnace body 1 by the drive component. This causes the positioning column 7 to move in coordination with the positioning component and the rotating component, thus displacing the pushing component. Once the pushing component is aligned with the feed inlet of the vacuum sintering furnace body 1, the positioning component releases the lock between the rotating component and the positioning column 7. Then, the rotating component drives the pushing component to rotate 90 degrees towards the vacuum sintering furnace body 1. The positioning component positions the rotating component and the positioning column 7. Then, the driving component drives the pushing component to push the material out of the vacuum sintering furnace body 1. Subsequently, the driving component reverses and moves the pushing component out of the vacuum sintering furnace body 1. The positioning component then unlocks the rotating component and the positioning column 7. The rotating component rotates and drives the pushing component to rotate and reset. The positioning component locks the rotating component and the positioning column 7 again. Finally, the driving component moves the pushing component to reset, completing the pushing of the material in the vacuum sintering furnace body 1.

[0032] In one embodiment, the drive assembly includes a motor 15, which is fixedly connected to the upper surface of the mounting block 4. The rotation output shaft of the motor 15 is fixedly connected to a worm gear 14. A support block 10 is fixedly connected to the left side surface of the mounting block 4. A support rod 12 is rotatably sleeved on the support block 10 via a bearing. A worm wheel 13 is fixedly connected to the upper end of the support rod 12. The worm wheel 13 meshes with the worm gear 14. The lower end of the support rod 12 is poweredly connected to the positioning column 7.

[0033] The lower end of the support rod 12 is fixedly connected to a first gear 11, which meshes with a rack 8. The rear end of the positioning column 7 is fixedly connected to a positioning block 6, and the left side of the positioning block 6 is fixedly connected to a rack 8.

[0034] A slide rail groove 5 is provided on the front surface of the mounting block 4. The slide rail groove 5 extends out of the rear surface of the mounting block 4. The slide rail groove 5 is slidably connected to the positioning block 6. The slide rail groove 5 and the positioning block 6 are fitted together. The slide rail groove 5 and the positioning block 6 are both square in shape. A support groove 9 is provided on the left side surface of the mounting block 4. The support groove 9 communicates with the interior of the slide rail groove 5. The first gear 11 extends into the positioning block 6 through the support groove 9 and meshes with the rack 8.

[0035] The motor 15 is started, which drives the worm gear 14 to rotate. The rotation of the worm gear 14 synchronously drives the worm wheel 13 to rotate. The rotation of the worm wheel 13 synchronously drives the support rod 12 and the first gear 11 to rotate simultaneously. During the rotation of the first gear 11, it meshes with the rack 8, which in turn drives the rack 8 to move back and forth. This, in turn, synchronously drives the positioning block 6, the positioning column 7, and the fixing ring 16 to move back and forth, which in turn synchronously drives the connecting rod 17, the push rod 18, and the push plate 19 to move back and forth.

[0036] In one embodiment, the rotating assembly includes a fixed ring 16, which is slidably sleeved on the outer surface of the positioning post 7. The inner wall of the fixed ring 16 is provided with a sliding groove 25. The vertical cross-section of the fixed ring 16 is fan-shaped. A limiting block 26 is fixedly connected to the outer surface of the positioning post 7. The limiting block 26 is slidably connected to the sliding groove 25.

[0037] Rotate the fixed ring 16 so that it rotates around the positioning post 7. Because the limiting block 26 slides in the sliding groove 25, the fixed ring 16 can no longer rotate after it rotates 90 degrees, so that the connecting rod 17 can rotate to the vertical position.

[0038] In one embodiment, the positioning component includes a first positioning hole 24 and a second positioning hole 27. Both the first positioning hole 24 and the second positioning hole 27 are formed on the outer surface of the positioning post 7. The first positioning hole 24 and the sliding groove 25 are set at a 90-degree angle. A limiting rod 28 is slidably connected to the outer surface of the fixing ring 16. The limiting rod 28 slides through the fixing ring 16. One end of the limiting rod 28 that slides through the fixing ring 16 is slidably connected to the second positioning hole 27 or the first positioning hole 24. A positioning plate 21 is fixedly connected to the end of the limiting rod 28 away from the positioning post 7. A positioning spring 20 is fixedly connected between the positioning plate 21 and the fixing ring 16. The positioning spring 20 is slidably sleeved on the outer surface of the limiting rod 28.

[0039] At this time, the positioning plate 21 can be pulled out, causing the positioning plate 21 to slide the limiting rod 28 out of the second positioning hole 27. During this process, the positioning spring 20 is stretched, causing the positioning spring 20 to undergo elastic deformation. At this time, the fixing ring 16 is rotated, causing the fixing ring 16 to rotate around the positioning post 7. After the fixing ring 16 rotates ninety degrees, the pulling of the positioning plate 21 is released. Under the action of the release elastic force of the positioning spring 20, the limiting rod 28 and the positioning plate 21 are reset, and the limiting rod 28 is slid into the first positioning hole 24, thereby positioning the fixing ring 16. The current state of the connecting rod 17, the pushing rod 18 and the pushing plate 19 is positioned to ensure the stability of the pushing plate 19 moving back and forth, thereby ensuring the stability of the pushing plate 19 moving backward to push the placement frame 23 out of the vacuum sintering furnace body 1, thereby ensuring the stability of the material being pushed out of the vacuum sintering furnace body 1, and thus increasing the stability of the pushing device and the vacuum sintering furnace.

[0040] In one embodiment, the material pushing assembly includes a connecting rod 17, which is fixedly connected to the outer surface of the fixing ring 16. A push rod 18 is fixedly connected to one end of the connecting rod 17 away from the fixing ring 16, and a push plate 19 is fixedly connected to one end of the push rod 18 away from the connecting rod 17.

[0041] When the push plate 19 moves forward to the front side of the vacuum sintering furnace body 1, the sealing covers 2 on both the front and rear sides are opened. As the push plate 19 moves backward, it touches the front surface of the placement frame 23 and pushes the placement frame 23 backward into the vacuum sintering furnace body 1. This also pushes the sintered material in the placement frame 23 out of the vacuum sintering furnace body 1, thereby achieving rapid material discharge and facilitating rapid material removal. It also increases the safety of the pushing device and the vacuum sintering furnace, thus increasing the practicality of the pushing device and the vacuum sintering furnace.

[0042] A vacuum sintering furnace includes the aforementioned feeding device. Two bottom support frames 3 are fixedly connected to the lower surface of the furnace body 1. Sealing covers 2 are provided on both the front and rear sides of the furnace body 1. Multiple vertical rods are fixedly connected to the bottom wall of the furnace body 1. A sliding placement frame 22 is fixedly connected to the upper end of each vertical rod. The sliding placement frame 22 is U-shaped. A placement frame 23 is slidably connected to the sliding placement frame 22. The rear surface of the push plate 19 contacts the front surface of the placement frame 23.

[0043] The sliding placement rack 22 guides the placement frame 23, enabling the placement frame 23 to move back and forth stably, thereby stably pushing the material out of the vacuum sintering furnace body 1.

[0044] In one embodiment, the vacuum sintering furnace body 1 is a prior art vacuum sintering furnace (model: VS-020203).

[0045] In one embodiment, for the worm 14 and worm wheel 13, in a specific application, the self-locking property of the worm gear meshing is utilized so that only the worm 14 can drive the worm wheel 13 to rotate, and the worm wheel 13 cannot drive the worm 14 to rotate. Without starting the motor 15, the positioning block 6 will not move back and forth, thus having a positioning function for the pushing mechanism.

[0046] In summary, during use, the connecting rod 17 is initially in a vertical state, and the push plate 19 is located outside the vacuum sintering furnace body 1. When it is necessary to push out the material inside the vacuum sintering furnace body 1, the motor 15 is started. The motor 15 drives the worm gear 14 to rotate. The rotation of the worm gear 14 synchronously drives the worm wheel 13 to rotate. The rotation of the worm wheel 13 synchronously drives the support rod 12 and the first gear 11 to rotate simultaneously. During the rotation of the first gear 11, it meshes with the rack 8. Then, the rotation of the first gear 11 drives the rack 8 to move back and forth, which in turn synchronously drives the positioning block 6, the positioning column 7 and the fixing ring 16 to move back and forth, which in turn synchronously drives the connecting rod 17, the push rod 18 and the push plate 19 to move back and forth. When the push plate 19 moves forward to the front side of the vacuum sintering furnace body 1, the sealing covers 2 on both the front and rear sides are opened.

[0047] At this time, the positioning plate 21 can be pulled out, so that the positioning plate 21 drives the limiting rod 28 to slide out of the second positioning hole 27. During this process, the positioning spring 20 is stretched, so that the positioning spring 20 undergoes elastic deformation. At this time, the fixing ring 16 is rotated, so that the fixing ring 16 rotates around the positioning post 7. Because the limiting block 26 slides in the sliding groove 25, when the fixing ring 16 rotates ninety degrees, and then the connecting rod 17 rotates to the vertical state, the fixing ring 16 can no longer continue to rotate.

[0048] At this point, the pulling of the positioning plate 21 is released. Under the action of the release force of the positioning spring 20, the limiting rod 28 and the positioning plate 21 are reset, and the limiting rod 28 slides into the first positioning hole 24, thereby positioning the fixing ring 16 and positioning the current state of the connecting rod 17, the pushing rod 18 and the pushing plate 19 to ensure the stability of the pushing plate 19's forward and backward movement. Then, the motor 15 is started, which drives the pushing plate 19 to move backward. During the backward movement of the pushing plate 19, it touches the front surface of the placement frame 23 and pushes the placement frame 23 backward into the vacuum sintering furnace body 1, thereby also pushing the sintered material in the placement frame 23 out of the vacuum sintering furnace body 1, thus realizing the rapid discharge of the material.

[0049] Through the above technical solution, 1. by setting the material pushing device outside the vacuum sintering furnace body 1, the limitations of the materials used to produce the material pushing device are reduced, thereby reducing the production cost. It avoids occupying space inside the vacuum sintering furnace body 1, making the space available for sintering and processing inside the vacuum sintering furnace body 1 larger and easier to maintain, thereby ensuring the sintering efficiency of the vacuum sintering furnace for materials.

[0050] 2. By pushing the plate 19 backward and moving it against the front surface of the placement frame 23, the placement frame 23 is pushed backward into the vacuum sintering furnace body 1, thereby also pushing the sintered material in the placement frame 23 out of the vacuum sintering furnace body 1, thus realizing the rapid discharge of the material and facilitating the rapid removal of the material, and increasing the safety of the pushing device and the vacuum sintering furnace, thereby increasing the practicality of the pushing device and the vacuum sintering furnace.

[0051] 3. The limiting rod 28 slides into the first positioning hole 24, thereby positioning the fixing ring 16, positioning the current state of the connecting rod 17, the pushing rod 18 and the pushing plate 19, ensuring the stability of the pushing plate 19 moving back and forth, thereby ensuring the stability of the pushing plate 19 moving backward to push the placement frame 23 out of the vacuum sintering furnace body 1, thereby ensuring the stability of the material being pushed out of the vacuum sintering furnace body 1, thereby increasing the stability of the pushing device and the vacuum sintering furnace.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A feeding device, said feeding device being installed on the furnace body (1) of a vacuum sintering furnace, characterized in that, A mounting block (4) is fixedly installed on one side of the vacuum sintering furnace body (1). A driving component is fixedly connected to the upper surface of the mounting block (4). A positioning column (7) is slidably connected to the mounting block (4) along the central axis of the vacuum sintering furnace body (1). The positioning column (7) is fixedly connected to the driving component. The driving component is used to drive the positioning column (7) to move back and forth. A rotating component is rotatably provided at the end of the positioning column (7) away from the mounting block (4). The rotating component is used to drive the pushing component to rotate around the positioning column (7). A pushing component is fixedly connected to the rotating component. The pushing component is used to push the material out of the vacuum sintering furnace body (1). A positioning component is provided on the rotating component. The positioning component is used to lock the rotating component and the positioning column (7).

2. The feeding device according to claim 1, characterized in that, The drive assembly includes a motor (15), which is fixedly connected to the upper surface of the mounting block (4). The rotation output shaft of the motor (15) is fixedly connected to a worm gear (14). A support block (10) is fixedly connected to the left side surface of the mounting block (4). A support rod (12) is rotatably sleeved on the support block (10) through a bearing. A worm wheel (13) is fixedly connected to the upper end of the support rod (12). The worm wheel (13) meshes with the worm gear (14). The lower end of the support rod (12) is poweredly connected to the positioning column (7).

3. The feeding device according to claim 2, characterized in that, The lower end of the support rod (12) is fixedly connected to a first gear (11), and the first gear (11) is meshed with a rack (8). The rear end of the positioning column (7) is fixedly connected to a positioning block (6), and the left side of the positioning block (6) is fixedly connected to a rack (8).

4. A feeding device according to claim 3, characterized in that, The front surface of the mounting block (4) is provided with a slide rail groove (5), which extends out of the rear surface of the mounting block (4). The slide rail groove (5) is slidably connected to the positioning block (6), and the slide rail groove (5) and the positioning block (6) are fitted together. The slide rail groove (5) and the positioning block (6) are both square in shape. The support groove (9) is opened on the left side surface of the mounting block (4), and the support groove (9) communicates with the interior of the slide rail groove (5). The first gear (11) extends into the positioning block (6) through the support groove (9) and meshes with the rack (8).

5. A feeding device according to claim 1, characterized in that, The rotating assembly includes a fixed ring (16), which is slidably sleeved on the outer surface of the positioning post (7). The inner wall of the fixed ring (16) is provided with a sliding groove (25). The vertical cross section of the fixed ring (16) is fan-shaped. A limiting block (26) is fixedly connected to the outer surface of the positioning post (7). The limiting block (26) is slidably connected to the sliding groove (25).

6. A feeding device according to claim 5, characterized in that, The positioning component includes a first positioning hole (24) and a second positioning hole (27). The first positioning hole (24) and the second positioning hole (27) are both opened on the outer surface of the positioning post (7). The first positioning hole (24) and the sliding groove (25) are set at a 90-degree angle. The outer surface of the fixing ring (16) is slidably connected to a limiting rod (28). The limiting rod (28) slides through the fixing ring (16). One end of the limiting rod (28) that slides through the fixing ring (16) is slidably connected to the second positioning hole (27) or the first positioning hole (24). The end of the limiting rod (28) away from the positioning post (7) is fixedly connected to a positioning plate (21). A positioning spring (20) is fixedly connected between the positioning plate (21) and the fixing ring (16). The positioning spring (20) is slidably sleeved on the outer surface of the limiting rod (28).

7. A feeding device according to claim 6, characterized in that, The feeding assembly includes a connecting rod (17), which is fixedly connected to the outer surface of the fixed ring (16). A push rod (18) is fixedly connected to one end of the connecting rod (17) away from the fixed ring (16), and a push plate (19) is fixedly connected to one end of the push rod (18) away from the connecting rod (17).

8. A vacuum sintering furnace, comprising a feeding device according to any one of claims 1-7, characterized in that, Two bottom support frames (3) are fixedly connected to the lower surface of the vacuum sintering furnace body (1). Sealing covers (2) are provided on both the front and rear sides of the vacuum sintering furnace body (1). Multiple vertical rods are fixedly connected to the bottom wall of the vacuum sintering furnace body (1). A sliding placement frame (22) is fixedly connected to the upper end of the vertical rod. The sliding placement frame (22) is in the shape of a "U". A placement frame (23) is slidably connected to the sliding placement frame (22). The rear surface of the push plate (19) is in contact with the front surface of the placement frame (23).

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