A Cemented Carbide Intelligent Sintering Device and Process

Abstract

The present invention relates to a cemented carbide intelligent sintering device and process applied to the field of alloy sintering. A lead screw is installed inside the sintering furnace. The surface of the lead screw is threadedly sleeved with a moving ring through a nut. A guiding frame is installed on the surface of the shaft rod. One end of the shaft rod is sleeved with a driven gear. The surface of the driven gear is meshed and connected with a moving rack. By using the cooperation of the guiding frame, the moving rack, the micro electrostrictive rod and the driven gear, during the alloy sintering process, when moving downward in the sintering furnace, the inclination state can be switched to ensure the stable progress of the feeding and stockpiling operations, realizing an intelligent and efficient feeding operation. And by changing the deformation of the guiding frame and the installation method of the constraint cylinder, after the sintering is completed, when the guiding frame moves upward, the sintered blank in the constraint cylinder can be effectively collected, realizing an automatic loading and unloading process and improving the sintering efficiency.

Description

Technical Field

[0001] The invention relates to a sintering device and a process, and in particular to a hard alloy intelligent sintering device and a process applied in the field of alloy sintering. Background Art

[0002] Alloy sintering is a crucial process in the production of cemented carbide. It refers to heating powdered metal or metal mixture to a certain temperature (but below its melting point) to promote the bonding and densification between particles, thereby forming a hard material with certain physical and mechanical properties. It is a complex process that involves not only changes in physical form, but also adjustments in chemical composition and crystal structure. By precisely controlling the sintering conditions, alloy materials with excellent properties can be obtained.

[0003] The specification of Chinese invention patent CN118417563B discloses a cemented carbide forming die and forming process. The alloy gear parts after demolding can be transferred to a conveying table for conveying through a stamping part transfer module. During the conveying process, the formed alloy gear parts can be sintered through a mesh belt furnace. The alloy gear parts can be continuously produced and processed, and the forming process efficiency is high. In addition, the specification of Chinese invention patent CN117680681B discloses a manganese-iron alloy powder microwave sintering device, which solves the problem that when the material is heated unevenly, the local material may be overburned, and even cracking or deformation of the finished product may be caused, affecting the quality and efficiency of the sintering process.

[0004] Existing alloy sintering devices will sinter the stamped blanks, but during sintering, the blanks are loaded one by one, which results in a relatively slow loading operation and affects the sintering efficiency. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to realize intelligent and efficient loading and unloading operations during cemented carbide sintering process, so as to ensure the sintering efficiency.

[0006] In order to solve the above problems, the present invention provides a cemented carbide intelligent sintering device, comprising a sintering furnace, a sealing cover is installed on the top of the sintering furnace, a driving motor is installed on the top of the sealing cover, a plug-in component is connected to the output end of the driving motor, a lead screw is installed inside the sintering furnace, a plug-in groove matching the plug-in component is provided on the top of the lead screw, a moving ring is sleeved on the surface of the lead screw through a nut thread, a plurality of mounting plates are arranged on the surface of the moving ring, and the mounting plates are grouped in twos, and a shaft rod is installed on the surfaces close to each other of two mounting plates in each group, a guide frame is installed on the surface of the shaft rod, a driven gear is sleeved on one end of the shaft rod, a moving rack is meshingly connected on the surface of the driven gear, an annular ring with a diameter larger than the diameter of the lead screw is connected to the top of the moving rack, an annular disk with a ring diameter larger than the diameter of the lead screw is connected to the top surface of the moving ring through a support rod, and the bottom of the annular disk is connected to the annular ring through a micro electric extension rod;

[0007] A rotating motor is installed at the bottom of the sintering furnace. Two symmetrically arranged linkage rods with L-shaped cross-sections are connected to the output end surface of the rotating motor. Multiple rotating gear rings are fixedly inserted on the surface of the linkage rods. A lifting ring is rotatably connected to the bottom of each rotating gear ring. A rotating gear meshing with the rotating gear ring is rotatably installed on the top of the lifting ring. A restraining cylinder is connected to the top of the rotating gear, and the arrangement position of each restraining cylinder corresponds one by one to the guide frame.

[0008] In the above-mentioned intelligent cemented carbide sintering device, by utilizing the cooperation of the guide frame, the movable rack, the micro electric extension rod and the driven gear, during the alloy sintering process, the tilt state can be switched during the downward movement in the sintering furnace to ensure the stable feeding and storage operations, thereby realizing intelligent and efficient loading operations.

[0009] As a further improvement of the present application, a disc is installed on the top of the output end of the rotating motor through a bearing, the outer side of the disc is fixedly connected to the inner wall of the lowest lifting ring, and a plug-in rod is fixedly installed on the top of the lowest lifting ring, and the top end of the plug-in rod passes through the interior of the highest lifting ring.

[0010] As a further improvement of the present application, the horizontal area of ​​the linkage rod is located below the disc, and the diameter of the lifting ring is smaller than the diameter of the rotating gear ring.

[0011] As a further improvement of the present application, a heating layer is installed on the inner wall of the sintering furnace, the heating layer is formed by stacking a plurality of heating rings, and a controller connected to the heating layer signal is installed on the surface of the sintering furnace.

[0012] As a further improvement of the present application, the guide frame is made of heat-insulating material, and a displacement sensor and an inclination sensor are installed inside the guide frame, and both the displacement sensor and the inclination sensor are connected to the micro electric extension rod signal.

[0013] As another improvement of the present application, the connection method between the rotating gear and the constraint cylinder is a movable connection, a U-shaped shaft seat is installed on the top of the rotating gear, and the interior of the shaft seat is connected to the surface of the constraint cylinder through a shaft rod, a heat insulation cover is installed on the surface of the shaft seat, and a driving motor is installed inside the heat insulation cover, and the output end of the driving motor is connected to the shaft rod through a heat insulation rod.

[0014] As another improved supplement of the present application, the guide frame includes a fixed frame with a pulley mounted on the surface, the tail end of the fixed frame is connected to two movable frames through a self-resetting shaft, the surfaces of the two movable frames are connected to traction ropes, and the tail ends of the traction ropes are wrapped around the surface of the pulley and connected to the side surface of the movable rack.

[0015] As another improved supplement of the present application, the bottoms of the two movable frames are connected with transverse plates, one of which is located above the other transverse plate, and the cross-sectional width values ​​of the two transverse plates are equal to the cross-sectional width value of the fixed frame.

[0016] As another improvement of the present application, a sintering process comprises the following steps:

[0017] S1, mixing alloy powder and binder according to formulation requirements, and then pressing to form a green body;

[0018] S2, start the driving motor, drive the guide frame to move to a position close to the top of the sintering furnace, stop rotating, then lift the sealing cover vertically, put the pressed alloy blanks into the upwardly inclined guide frame, then cover the sealing cover, start the driving motor, drive the guide frame to move to a position close to the top of the constraint tube, so that the guide frame switches to a downwardly inclined state, transfer the alloy blanks in the guide frame into the constraint tube, and then tilt the guide frame upward;

[0019] S3, repeat S2 until the guide frame finishes feeding, then start the heating layer to perform sintering;

[0020] S4. During the sintering process, the rotating motor is started to drive the rotating gear ring to rotate, and indirectly drive the restraining cylinder to rotate, so that the green body is evenly sintered.

[0021] In summary, by utilizing the cooperation of the guide frame, the movable rack, the micro electric extension rod and the driven gear, during the alloy sintering process, the tilt state can be switched during the downward movement in the sintering furnace to ensure the stable feeding and storage operations, thereby realizing intelligent and efficient loading operations. Moreover, by deforming the guide frame and changing the installation method of the constraint cylinder, after the sintering is completed, when the guide frame moves upward, the sintered blank in the constraint cylinder can be effectively collected, thereby realizing automatic loading and unloading processing and improving sintering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a sintering device according to the first embodiment of the present application;

[0023] Figure 2 This is a diagram showing the internal structure of a sintering furnace according to the first embodiment of the present application;

[0024] Figure 3 This is an installation diagram of the restraining cylinder and the rotating gear of the first embodiment of the present application;

[0025] Figure 4 For this application Figure 3 A is an enlarged schematic diagram;

[0026] Figure 5 This is a schematic diagram of the installation of the lifting ring and the linkage rod of the first embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the installation of the guide frame and the movable rack according to the first embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of the state of the guide frame of the first embodiment of the present application before and after passing through the restraining cylinder;

[0029] Figure 8 This is a schematic diagram of the rotation of the constraint cylinder in the first embodiment of the present application;

[0030] Fig. 9 This is a schematic diagram of the installation of the axle seat and the restraint cylinder of the second embodiment of the present application;

[0031] Fig.10 This is a diagram of the installation of a fixed frame, a movable frame and a pulling rope according to the second embodiment of the present application;

[0032] Fig.11 This is a schematic diagram of the outwardly offset state of two movable frames in the second implementation mode of the present application;

[0033] Fig.12 This is a state diagram of the embryo body in the constraining tube when the guide frame moves upward according to the second embodiment of the present application.

[0034] Description of the numbers in the figure:

[0035] 1. Sintering furnace; 2. Driving motor; 3. Rotating gear ring; 4. Constraint cylinder; 5. Guide frame; 6. Lifting ring; 7. Rotating motor; 8. Linkage rod; 9. Rotating gear; 10. Lead screw; 11. Micro electric extension rod; 12. Annular ring; 13. Moving rack; 14. Driven gear; 15. Annular disk; 16. Heat shield; 17. Shaft seat; 50. Fixed frame; 51. Movable frame; 52. Traction rope. DETAILED DESCRIPTION

[0036] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0037] The first implementation method:

[0038] Figure 1-6 A cemented carbide intelligent sintering device is shown, comprising a sintering furnace 1, a sealing cover is installed on the top of the sintering furnace 1, a driving motor 2 is installed on the top of the sealing cover, a plug-in component is connected to the output end of the driving motor 2, a lead screw 10 is installed inside the sintering furnace 1, a plug-in groove matching the plug-in component is provided on the top of the lead screw 10, a moving ring is sleeved on the surface of the lead screw 10 through a nut thread, a plurality of mounting plates are arranged on the surface of the moving ring, and the mounting plates are grouped in pairs, and a shaft rod is installed on the surfaces of two mounting plates in each group close to each other, a guide frame 5 is installed on the surface of the shaft rod, a driven gear 14 is sleeved on one end of the shaft rod, a moving rack 13 is meshingly connected on the surface of the driven gear 14, an annular ring 12 with a diameter larger than that of the lead screw 10 is connected to the top of the moving rack 13, an annular disk 15 with a ring diameter larger than that of the lead screw 10 is connected to the top surface of the moving ring through a support rod, and the bottom of the annular disk 15 is connected to the annular ring 12 through a micro electric extension rod 11;

[0039] A rotating motor 7 is installed at the bottom of the sintering furnace 1. Two symmetrically arranged linkage rods 8 with L-shaped cross-sections are connected to the output end surface of the rotating motor 7. A plurality of rotating gear rings 3 are fixedly inserted on the surface of the linkage rods 8. A lifting ring 6 is rotatably connected to the bottom of each rotating gear ring 3. A rotating gear 9 meshing with the rotating gear ring 3 is rotatably installed on the top of the lifting ring 6. A restraining cylinder 4 is connected to the top of the rotating gear 9, and the arrangement position of each restraining cylinder 4 corresponds one-to-one to the guide frame 5.

[0040] Specifically, in the present embodiment, each component is a high temperature resistant component or is coated with a high temperature resistant coating on the surface to adapt to the high temperature environment during the sintering process.

[0041] When performing the corresponding alloy sintering treatment, the multiple pressed blanks are first sent to the guide frame 5 in an inclined upward state, and then the sealing cover is closed vertically. The plug-in effect of the connector and the plug-in slot is used to start the drive motor 2, drive the screw 10 to rotate, and drive the guide frame 5 to move downward (because the guide frame 5 is located near the top of the sintering furnace 1 when the blank is placed). At this time, the guide frame 5 will first contact the uppermost constraint cylinder 4. When the guide frame 5 moves to a position close to the top of the uppermost constraint cylinder 4, the micro-electric extension rod 11 retracts upward, driving the annular ring 12 and the moving rack 13 to move upward. The engagement of the moving rack 13 and the driven gear 14 is used to drive the shaft rod and the guide frame 5 connected thereto to deflect downward by a certain amplitude, so that the blank in the guide frame 5 can slide into the constraint cylinder 4 (by controlling the downward tilting time of the guide frame 5, the number of blanks in the guide frame 5 that fall into the constraint cylinder 4 can be controlled).

[0042] After the first round of feeding is completed, the guide frame 5 continues to tilt upward to prevent the embryo body inside from falling. When it moves to a position close to the top of the next constraint cylinder 4 (at this time, there is a vertical distance between the top of the constraint cylinder 4 and the guide frame 5, providing an operable space for the subsequent downward tilt), the above steps are repeated to complete the second round of feeding operation until the guide frame 5 completes the feeding operation inside the lowest constraint cylinder 4 (such as Figure 7 as shown).

[0043] Through the guide frame 5, a synchronous feeding operation can be performed on multiple restraining cylinders 4 in the same plane, which is efficient and convenient compared to the one-by-one feeding in the prior art.

[0044] A disc is installed on the top of the output end of the rotating motor 7 through a bearing. The outer side of the disc is fixedly connected to the inner wall of the lowest lifting ring 6. A plug-in rod is fixedly installed on the top of the lowest lifting ring 6, and the top end of the plug-in rod passes through the interior of the highest lifting ring 6.

[0045] The horizontal area of ​​the linkage rod 8 is located below the disc, and the diameter of the lifting ring 6 is smaller than the diameter of the rotating gear ring 3 .

[0046] Specifically, the bottom end of the lead screw 10 is rotatably connected to the surface of the disc, and the rotation of the two does not interfere with each other. The disc is connected to the output end of the rotating motor 7 through a bearing, so that when the rotating motor 7 rotates, the disc will not rotate synchronously. Through the penetration of the plug-in rod, the multiple lifting rings 6 and the rotating gear ring 3 in the sintering furnace 1 can maintain a state of relative motion. When the rotating motor 7 starts to drive the linkage rod 8 to rotate and then drive the rotating gear ring 3 to move, the rotating gear ring 3 can be driven to mesh with the rotating gear 9 and rotate, indirectly driving the constraint cylinder 4 to rotate, so that the green body in the constraint cylinder 4 is evenly sintered (such as Figure 8 as shown).

[0047] A heating layer is installed on the inner wall of the sintering furnace 1 . The heating layer is formed by stacking a plurality of heating rings. A controller connected to the heating layer signal is installed on the surface of the sintering furnace 1 .

[0048] Specifically, according to the height of the green body filled in the restraining tube 4 in the sintering furnace 1, the heating rings in the corresponding range are controlled to start heating, so as to avoid energy waste.

[0049] The guide frame 5 is made of heat-insulating material. A displacement sensor and an inclination sensor are installed inside the guide frame 5 , and both the displacement sensor and the inclination sensor are connected to the micro electric extension rod 11 by signal.

[0050] Specifically, the movement position state of the guide frame 5 in the sintering furnace 1 can be detected by the displacement sensor, which is used to determine the distance between the guide frame 5 and the constraint tube 4, provide a reference for the time point when the micro electric extension rod 11 starts to extend or retract, and detect the inclination degree of the guide frame 5 by the inclination sensor.

[0051] The second implementation method:

[0052] Fig. 9 It is shown that the connection between the rotating gear 9 and the constraint cylinder 4 is a movable connection. A U-shaped shaft seat 17 is installed on the top of the rotating gear 9, and the interior of the shaft seat 17 is connected to the surface of the constraint cylinder 4 through a shaft rod. A heat insulation cover 16 is installed on the surface of the shaft seat 17, and a driving motor is installed inside the heat insulation cover 16. The output end of the driving motor is connected to the shaft rod through a heat insulation rod.

[0053] Fig.10 As shown, the guide frame 5 includes a fixed frame 50 with a pulley mounted on the surface, the tail end of the fixed frame 50 is connected to two movable frames 51 through a self-resetting shaft, the surfaces of the two movable frames 51 are connected to traction ropes 52, and the tail ends of the traction ropes 52 are wrapped around the surface of the pulley and connected to the side surface of the movable rack 13.

[0054] The bottoms of the two movable frames 51 are connected with transverse plates, one of which is located above the other transverse plate, and the cross-sectional widths of the two transverse plates are equal to the cross-sectional width of the fixed frame 50 .

[0055] Different from the first embodiment, in this embodiment, the guide frame 5 is deformed so that after one downward movement to feed the material, the guide frame 5 can cooperate with the restraint cylinder 4 in the subsequent upward movement to complete the collection of the sintered green body.

[0056] Specifically, after sintering is completed, the rotating motor 7 stops, and the driving motor 2 is started to drive the guide frame 5 to gradually move upward, and the micro-electric extension rod 11 is used to adjust the guide frame 5 to an upward tilted state (at this time, the downward movement of the movable rack 13 is small, resulting in a small rotation amplitude of the driven gear 14, and then the upward tilt degree of the guide frame 5 is small, so that even if there is a misalignment of the cross plates at the bottom of the two movable frames 51, it is not obvious). When the guide frame 5 moves to a position close to the bottom end of the lowest constraint cylinder 4, the driving motor is started to drive the constraint cylinder 4 to rotate (the rotation direction is constant, so that the constraint cylinder 4 rotates toward the center of the sintering furnace 1), so as to transfer the sintered green body to the upward tilted guide frame 5, then the constraint cylinder 4 is reset, and the guide frame 5 continues to move upward, and the above steps are repeated until the green body is collected (such as Fig.12 as shown).

[0057] In addition, since the diameter of the restraining tube 4 is larger than the cross-sectional width of the guide frame 5, when the embryo is poured into the guide frame 5, there is a possibility that the embryo falls outside the guide frame 5. At this time, the micro-electric extension rod 11 continues to extend downward, driving the moving rack 13 to continue to move downward, driving the end of the traction rope 52 connected to the surface of the moving rack 13 to continue to move downward, thereby pulling the other end, causing the movable frame 51 to deviate outward, so that the port of the entire guide frame 5 forms a trumpet-shaped design (such as Fig.11 As shown), it is used to receive the blank poured out of the constraint tube 4, and the two horizontal plates arranged with equal cross-sections can play a lifting role (the gap between the two horizontal plates increases with the rotation amplitude of the movable frame 51, and the area of ​​the gap can be controlled to be smaller than the area of ​​the blank by controlling the downward movement degree of the micro-electric extension rod 11, thereby preventing the blank from falling from the gap).

[0058] The third implementation method:

[0059] A sintering process comprises the following steps:

[0060] S1, mixing alloy powder and binder according to formulation requirements, and then pressing to form a green body;

[0061] S2, start the driving motor 2, drive the guide frame 5 to move to a position close to the top of the sintering furnace 1, stop rotating, then lift the sealing cover vertically, put the pressed alloy blanks into the upwardly inclined guide frame 5, then cover the sealing cover, start the driving motor 2, drive the guide frame 5 to move to a position close to the top of the constraint tube 4, so that the guide frame 5 switches to a downwardly inclined state, transfer the alloy blanks in the guide frame 5 into the constraint tube 4, and then the guide frame 5 tilts upward;

[0062] S3, repeat S2 until the guide frame 5 has finished feeding the material, and then start the heating layer to perform sintering;

[0063] S4. During the sintering process, the rotating motor 7 is started to drive the rotating gear ring 3 to rotate, and indirectly drive the restraining cylinder 4 to rotate, so that the green body is evenly sintered.

[0064] In summary, the present application utilizes the cooperation of the guide frame 5, the movable rack 13, the micro electric extension rod 11 and the driven gear 14. During the alloy sintering process, during the downward movement in the sintering furnace 1, the tilted state can be switched to ensure the stable feeding and storage operations, thereby realizing intelligent and efficient loading operations. By deforming the guide frame 5 and changing the installation method of the constraint tube 4, after the sintering is completed, when the guide frame 5 moves up, the sintered blank in the constraint tube 4 can be effectively collected, thereby realizing automatic loading and unloading processing and improving sintering efficiency.

[0065] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A cemented carbide intelligent sintering device, comprising a sintering furnace (1), characterized in that: The sintering furnace (1) is provided with a sealing cover on the top, a driving motor (2) is provided on the top of the sealing cover, a plug-in component is connected to the output end of the driving motor (2), a lead screw (10) is provided inside the sintering furnace (1), a plug-in slot matching the plug-in component is provided on the top of the lead screw (10), a moving ring is connected to the surface of the lead screw (10) through a nut thread sleeve, a plurality of mounting plates are arranged on the surface of the moving ring, and the mounting plates are arranged in groups of two, and shafts are installed on the surfaces of the two mounting plates in each group that are close to each other. A rod, a guide frame (5) is installed on the surface of the shaft, a driven gear (14) is sleeved on one end of the shaft, a movable rack (13) is meshingly connected to the surface of the movable rack (14), a ring ring (12) having a diameter greater than that of the lead screw (10) is connected to the top of the movable rack (13), a ring disk (15) having a ring diameter greater than that of the lead screw (10) is connected to the top surface of the movable ring via a support rod, and the bottom of the ring disk (15) is connected to the ring ring (12) via a micro electric extension rod (11); The bottom of the sintering furnace (1) is equipped with a rotating motor (7), the output end surface of the rotating motor (7) is connected to two symmetrically arranged linkage rods (8) with an L-shaped cross section, the surface of the linkage rod (8) is fixedly plugged with a plurality of rotating gear rings (3), the bottom of each rotating gear ring (3) is rotatably connected to a lifting ring (6), the top of the lifting ring (6) is rotatably equipped with a rotating gear (9) meshing with the rotating gear ring (3), the top of the rotating gear (9) is connected to a restraining cylinder (4), and the arrangement position of each restraining cylinder (4) corresponds one-to-one with the guide frame (5); The guide frame (5) is made of a heat-insulating material, and a displacement sensor and an inclination sensor are installed inside the guide frame (5), and both the displacement sensor and the inclination sensor are connected to the micro electric extension rod (11) by signal. The guide frame (5) comprises a fixed frame (50) with a pulley mounted on its surface, the tail end of the fixed frame (50) being connected to two movable frames (51) via a self-resetting shaft, the surfaces of the two movable frames (51) being connected to traction ropes (52), the tail ends of the traction ropes (52) being wound around the surface of the pulley and connected to the side surface of the movable rack (13); When the corresponding alloy sintering treatment is performed, the pressed multiple blanks are first sent to the guide frame (5) in an inclined upward state, and then the sealing cover is closed vertically. The plug-in effect of the plug-in component and the plug-in slot is used to start the drive motor (2), drive the lead screw (10) to rotate, and drive the guide frame (5) to move downward. At this time, the guide frame (5) will first contact the uppermost constraint cylinder (4). When the guide frame (5) moves to a position close to the top of the uppermost constraint cylinder (4), the micro-electric extension rod (11) retracts upward, driving the annular ring (12) and the moving rack (13) to move upward. By using the meshing of the moving rack (13) and the driven gear (14), the shaft rod and the guide frame (5) connected thereto are driven to deflect downward by a certain amplitude, so that the blank in the guide frame (5) can slide into the constraint cylinder (4).

2. The intelligent sintering device for cemented carbide according to claim 1, characterized in that: A disc is mounted on the top of the output end of the rotating motor (7) via a bearing, the outer side of the disc is fixedly connected to the inner wall of the lowest lifting ring (6), and a plug-in rod is fixedly mounted on the top of the lowest lifting ring (6), and the top end of the plug-in rod penetrates into the interior of the highest lifting ring (6).

3. The intelligent sintering device for cemented carbide according to claim 2, characterized in that: The horizontal area of ​​the linkage rod (8) is located below the disc, and the diameter of the lifting ring (6) is smaller than the diameter of the rotating gear ring (3).

4. The intelligent sintering device for cemented carbide according to claim 3, characterized in that: The inner wall of the sintering furnace (1) is provided with a heating layer, the heating layer being formed by stacking a plurality of heating rings, and the surface of the sintering furnace (1) is provided with a controller connected to the heating layer signal.

5. The intelligent sintering device for cemented carbide according to claim 4, characterized in that: The rotating gear (9) and the restraining tube (4) are connected in a movable manner. A U-shaped shaft seat (17) is installed on the top of the rotating gear (9), and the interior of the shaft seat (17) is connected to the surface of the restraining tube (4) via a shaft rod. A heat insulation cover (16) is installed on the surface of the shaft seat (17), and a driving motor is installed inside the heat insulation cover (16). The output end of the driving motor is connected to the shaft rod via a heat insulation rod.

6. The intelligent sintering device for cemented carbide according to claim 5, characterized in that: The bottoms of the two movable frames (51) are both connected to a transverse plate, one of the transverse plates is located above the other transverse plate, and the cross-sectional widths of the two transverse plates are equal to the cross-sectional width of the fixed frame (50).

7. A sintering process, characterized in that: A cemented carbide intelligent sintering device as claimed in any one of claims 1 to 6 is used, comprising the following steps: S1, mixing alloy powder and binder according to the formulation requirements, and then pressing to form a green body; S2, starting the driving motor (2) to drive the guide frame (5) to move to a position close to the top of the sintering furnace (1), then stopping the rotation, then lifting the sealing cover vertically, placing the plurality of pressed alloy blanks into the upwardly inclined guide frame (5), then covering the sealing cover, starting the driving motor (2), and driving the guide frame (5) to move to a position close to the top of the restraining tube (4), so that the guide frame (5) switches to a downwardly inclined state, and after the alloy blanks in the guide frame (5) are transferred into the restraining tube (4), the guide frame (5) tilts upward; S3, repeat S2 until the guide frame (5) has finished feeding the material, and then start the heating layer to perform sintering; S4. During the sintering process, the rotating motor (7) is started to drive the rotating gear ring (3) to rotate, thereby indirectly driving the restraining cylinder (4) to rotate, so that the green body is evenly sintered.

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