A sintering furnace material dropping clamp

Abstract

The present application relates to material clamp technical field, especially a kind of sintering furnace blank holder, comprising: big arm, mounting seat, threaded slider and strong magnetic block, one end of big arm is rotatably connected with small arm, the inside of big arm is rotatably connected with driving shaft, the inside of small arm is rotatably connected with driven shaft, driving shaft and driven shaft are connected by universal joint, the end of small arm away from big arm is fixedly connected with mounting seat, the side of mounting seat away from small arm is designed with jaw at equal intervals, connecting seat is installed between jaw and mounting seat, threaded slider is symmetrically arranged at one end of jaw, two threaded sliders are installed in cooperation with connecting seat, strong magnetic block is fixedly connected at the bottom of mounting seat, when two threaded sliders are moved to maximum gap, strong magnetic block adsorbs threaded slider, the present application uses "square mounting shaft and threaded slider plug-in cooperation+strong magnetic block adsorption positioning" instead of bolt fixing, without accurate alignment bolt hole, single person can complete installation, time consumption is only 3-5 minutes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material clamps, in particular to a sintering furnace material dropping clamp. BACKGROUND

[0002] In the sintering production process of metallurgy and new material industry, the sintering furnace is used to realize high-temperature sintering of materials, and the material dropping clamp, as the core supporting tool of the sintering furnace, is used to transfer the materials with residual temperature of 400-600℃ from the furnace or the sintering tray to the cooling device, the sorting line or the storage bin, and is the key equipment connecting the sintering process and the subsequent process.

[0003] Due to the significant difference in physical properties of the materials to be processed, the material dropping clamp needs to replace the adaptive clamping jaw according to the type of the material: for example, when processing φ80-150mm spherical sintered ore, arc-shaped clamping surface clamping jaw is needed to prevent the material from rolling; when processing φ50-80mm fragile ceramic body, clamping jaw covered with high-temperature resistant silica gel pad is needed to buffer the pressure; when processing 5-10mm thick sheet-shaped rare earth permanent magnet, fine-toothed clamping jaw is needed to avoid deformation of the sheet. In actual production, enterprises need to replace the clamping jaw 2-3 times a day due to order switching, and the same product line also needs to adjust the clamping jaw according to the size of the material batch every week, and the efficiency of clamping jaw replacement directly determines the production switching speed of the sintering furnace.

[0004] At present, more than 90% of the material dropping clamps of the sintering furnace on the market adopt the connection mode of "rigid fixation of clamping jaw and mounting seat through bolts" to realize the assembly of the clamping jaw: 2-3 groups of M10-M12 internal hexagonal bolts are configured for each group of clamping jaw, and 6-9 groups of bolts are needed to penetrate the clamping jaw connecting lug and the mounting seat threaded hole to realize fastening. Due to the simple design and high initial fixation reliability, this connection structure has become the mainstream choice of the prior art.

[0005] Defects of the prior art

[0006] In actual application process, the above-mentioned bolt fixing structure exposes the technical defects that cannot meet the frequent clamping jaw replacement requirements:

[0007] When the material is switched, the jaw replacement needs to be performed in sequence, such as stopping, removing the furnace opening protection device, disassembling the bolt, removing the old jaw, installing the new jaw, tightening the bolt, debugging and the like. Among them, the bolt disassembly is the core time-consuming link: the high temperature environment causes the sinter powder, ceramic particles and other material dust to easily penetrate between the bolt and the threaded hole, forming dust plugging, which can be twisted after repeated blowing of compressed air; some bolts appear "stuck" due to thermal expansion and contraction effect under 400-600 DEG C high temperature, need to dip in rust remover for 10-15 minutes, and auxiliary hammer tapping wrench loosening, single bolt disassembly time-consuming 3-5 minutes, 6-9 groups of bolts disassembly time-consuming 20-40 minutes. In the installation stage, the new jaw needs to be accurately aligned with the bolt hole, and two people need to cooperate to position in the narrow operation space, and the torque wrench needs to be used to calibrate the torque when tightening, which takes 10-15 minutes.

[0008] Therefore, it is necessary to provide a new sintering furnace blanking clamp to solve the above technical problems. SUMMARY

[0009] To solve the above technical problems, the present application provides a sintering furnace blanking clamp.

[0010] The sintering furnace blanking clamp provided by the present application comprises a large arm, a mounting seat, a threaded sliding block and a strong magnetic block, one end of the large arm is rotatably connected with a small arm, the inside of the large arm is rotatably connected with a driving shaft, the inside of the small arm is rotatably connected with a driven shaft, the driving shaft and the driven shaft are connected through a universal joint, one end of the small arm away from the large arm is fixedly connected with the mounting seat, the mounting seat away from the small arm is designed with a jaw at equal intervals, a connecting seat is installed between the jaw and the mounting seat, one end of the jaw is symmetrically provided with a threaded sliding block, the two threaded sliding blocks are installed in cooperation with the connecting seat, the mounting seat is fixedly connected with a strong magnetic block at equal intervals on the edge of one end close to the jaw, and the strong magnetic block adsorbs the threaded sliding block when the two threaded sliding blocks move to the maximum gap.

[0011] Preferably, the inside of the mounting seat is rotatably connected with a turntable, the side of the turntable close to the jaw is provided with a plane thread, the side of the mounting seat close to the jaw is equally provided with a sliding groove, the inside of the sliding groove is slidably connected with the connecting seat, the side of the connecting seat is provided with an adaptive sliding groove corresponding to the plane thread, the plane thread and the adaptive sliding groove are installed in cooperation, and one end of the driven shaft extends into the inside of the mounting seat and is fixedly connected with the turntable.

[0012] Preferably, one end of the jaw is provided with a groove, a threaded rod is rotatably connected in the inside of the groove, the two ends of the threaded rod are threadedly connected with the two threaded sliding blocks, a linkage gear is fixedly connected in the middle of the threaded rod, a sector gear is fixedly connected in the middle of the connecting seat, and the linkage gear and the sector gear are intermittently meshingly connected.

[0013] Preferably, the mounting shaft is rotatably connected in the connecting seat, the mounting shaft is square in design at both ends, the mounting shaft is respectively inserted with the threaded sliding blocks at both ends, the mounting shaft is fixedly connected with the spring in the inside, the mounting shaft is slidably connected with the moving friction plate in the inside, the mounting shaft is fixedly connected with the rotating friction plate at one end, the moving friction plate is frictionally connected with the rotating friction plate, and the rotating friction plate is fixedly connected with the gear ring on the outer wall.

[0014] Preferably, the mounting seat is fixedly connected with the rack at the bottom end, the connecting seat is rotatably connected with the driving gear, and the driving gear is intermittently engaged with the rack and the gear ring.

[0015] Preferably, the outer wall of the moving friction plate is fixedly connected with the limiting sliding block in a symmetrical manner, the connecting seat is symmetrically provided with the limiting sliding groove in the inside, and the limiting sliding block is slidably connected with the limiting sliding groove.

[0016] Preferably, when the three groups of clamping jaws are away from each other at the maximum distance, the three clamping jaws are in an unfolded state, and when the driving gear is not engaged with the gear ring, the three clamping jaws are designed in a conical shape.

[0017] Preferably, the friction force of the moving friction plate and the rotating friction plate is greater than the reaction force of the three clamping jaws on the material.

[0018] Preferably, the spring is made of tungsten alloy material which is resistant to high temperature.

[0019] Preferably, the threaded rod is a bidirectional threaded rod.

[0020] Compared with the related art, the sintering furnace material falling clamp provided by the present application has the following beneficial effects:

[0021] The present application adopts the "insertion and cooperation of the square mounting shaft and the threaded sliding block + adsorption positioning of the strong magnetic block" to replace the bolt fixing:

[0022] The disassembly stage: without disassembling the bolt, only the adsorption force of the strong magnetic block needs to be overcome, so that the threaded sliding block of the old clamping jaw can be separated from the mounting shaft, and because the square cross section has no rotation locking problem, the separation action can be completed within 1-2 minutes;

[0023] The installation stage: the threaded sliding block is directly inserted along the cross section of the mounting shaft, the strong magnetic block automatically adsorbs the threaded sliding block to realize the pre-positioning, without the need for precise alignment of the bolt hole, and a single person can complete the installation, and the time consumption is only 3-5 minutes. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is one of the structure schematic diagrams of the sintering furnace material falling clamp provided by the present application;

[0025] Figure 2 It is the second structure schematic diagram of the sintering furnace material falling clamp provided by the present application;

[0026] Figure 3For Figure 1 The structure schematic view of the connecting seat shown in the figure.

[0027] Figure 4 For Figure 1 The structure schematic view of the mounting seat shown in the figure.

[0028] Figure 5 For Figure 1 The structure schematic view of the driving gear shown in the figure.

[0029] Figure 6 For Figure 1 The structure schematic view of the inside of the connecting seat shown in the figure.

[0030] Figure 7 For Figure 1 The structure schematic view of the clamping jaw shown in the figure.

[0031] Figure 8 For Figure 2 The enlarged view of A in the figure.

[0032] Figure label: 1, large arm; 2, small arm; 3, driven rotating shaft; 31, driving rotating shaft; 4, mounting seat; 5, clamping jaw; 6, connecting seat; 7, threaded sliding block; 8, strong magnetic block; 9, rotating disc; 10, flat thread; 11, sliding groove; 12, adaptive sliding groove; 13, groove; 14, threaded rod; 15, linkage gear; 16, sector gear; 17, mounting shaft; 18, spring; 19, moving friction plate; 20, rotating friction plate; 21, gear ring; 22, rack; 23, driving gear; 24, limiting sliding block; 25, limiting sliding groove. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples, and it should be understood that the specific examples described here are only used to explain the present application, and are not used to limit the present application.

[0034] The specific implementation of the present application is described in detail below in combination with specific examples.

[0035] Please refer to Figures 1 to 8A sintering furnace blanking clamp, comprising a large arm 1, a mounting seat 4, a threaded sliding block 7 and a strong magnetic block 8, one end of the large arm 1 is rotatably connected with a small arm 2, the inside of the large arm 1 is rotatably connected with a driving rotary shaft 31, the inside of the small arm 2 is rotatably connected with a driven rotary shaft 3, the driving rotary shaft 31 and the driven rotary shaft 3 are connected through a universal joint, the end of the small arm 2 away from the large arm 1 is fixedly connected with the mounting seat 4, the side of the mounting seat 4 away from the small arm 2 is designed with equidistant clamping jaws 5, the clamping jaws 5 and the mounting seat 4 are provided with a connecting seat 6, one end of the clamping jaws 5 is provided with the threaded sliding block 7, the two threaded sliding blocks 7 are cooperatively installed with the connecting seat 6, the equidistantly symmetrically fixed strong magnetic blocks 8 are arranged on the edge of one end of the mounting seat 4 close to the clamping jaws 5, and the strong magnetic blocks 8 adsorb the threaded sliding blocks 7 when the two threaded sliding blocks 7 are moved to the maximum gap.

[0036] Please refer to Figures 2 to 3 The inside of the mounting seat 4 is rotatably connected with a rotary disc 9, the side of the rotary disc 9 close to the clamping jaws 5 is provided with a plane thread 10, the side of the mounting seat 4 close to the clamping jaws 5 is equidistantly provided with a sliding groove 11, the inside of the sliding groove 11 is slidably connected with the connecting seat 6, the side of the connecting seat 6 is provided with an adaptive sliding groove 12 corresponding to the plane thread 10, the plane thread 10 and the adaptive sliding groove 12 are cooperatively installed, and one end of the driven rotary shaft 3 extends into the inside of the mounting seat 4 and is fixedly connected with the rotary disc 9.

[0037] Please refer to Figures 7 to 8 One end of the clamping jaws 5 is provided with a recess 13, the inside of the recess 13 is rotatably connected with a threaded rod 14, the two ends of the threaded rod 14 are threadedly connected with the two threaded sliding blocks 7, the middle of the threaded rod 14 is fixedly connected with a linkage gear 15, the middle of the connecting seat 6 is fixedly connected with a sector gear 16, and the linkage gear 15 and the sector gear 16 are intermittently meshingly connected.

[0038] Please refer to Figures 5 to 6 The inside of the connecting seat 6 is rotatably connected with a mounting shaft 17, the two ends of the mounting shaft 17 are designed in a square shape, the two ends of the mounting shaft 17 are respectively inserted into the threaded sliding blocks 7, the inside of the mounting shaft 17 is fixedly connected with a spring 18, the inside of the mounting shaft 17 is slidably connected with a moving friction piece 19, one end of the mounting shaft 17 is fixedly connected with a rotating friction piece 20, the moving friction piece 19 and the rotating friction piece 20 are frictionally connected, the outer wall of the rotating friction piece 20 is fixedly connected with a tooth ring 21, the bottom end of the mounting seat 4 is equidistantly fixedly connected with a rack 22, the inside of the connecting seat 6 is rotatably connected with a driving gear 23, the driving gear 23 and the rack 22 are intermittently meshed, the driving gear 23 and the tooth ring 21 are meshed, the outer wall of the moving friction piece 19 is symmetrically fixedly connected with a limiting sliding block 24, the inside of the connecting seat 6 is symmetrically provided with a limiting sliding groove 25, the limiting sliding block 24 and the limiting sliding groove 25 are slidably connected, the spring 18 is made of tungsten alloy material which is high-temperature resistant, and the threaded rod 14 is a bidirectional threaded rod.

[0039] Please refer to Figure 2When the three sets of grippers 5 are at their maximum distance from each other, the three grippers 5 are in an unfolded state. When the drive gear 23 is not engaged with the rack 22 and the toothed ring 21, the three grippers 5 are in a conical design.

[0040] Please see Figure 1 The frictional force between the moving friction plate 19 and the rotating friction plate 20 is greater than the reaction force of the three grippers 5 clamping the material.

[0041] The working principle of the sintering furnace feeding clamp provided by this invention is as follows:

[0042] I. Operation of the Power Transmission Basic Structure

[0043] Power input and transmission:

[0044] An external drive unit rotates the active shaft 31 inside the boom 1. The active shaft 31 transmits torque to the driven shaft 3 inside the forearm 2 via a universal joint. The universal joint is designed to accommodate the rotational connection between the boom 1 and the forearm 2, ensuring stable power transmission even when the boom's posture is adjusted. The end of the driven shaft 3 furthest from the universal joint extends into the mounting base 4 and is fixedly connected to the internal turntable 9, ultimately driving the turntable 9 to rotate synchronously.

[0045] Radial movement drive of connector 6:

[0046] The turntable 9 has a planar thread 10 on the side facing the gripper 5. The mounting base 4 has a sliding groove 11 equidistantly opened on its surface, and the connecting base 6 is slidably connected in the groove. The adapting groove 12 on one side of the connecting base 6 engages with the planar thread 10. When the turntable 9 rotates clockwise / counterclockwise, the planar thread 10 pushes the adapting groove 12 through the helical inclined surface, so that the three sets of connecting bases 6 move radially closer / away along the groove 11.

[0047] II. Clamping Status Workflow

[0048] Gripper 5 posture presets:

[0049] In the initial state, the drive gear 23 is not engaged with the rack 22, and the three sets of grippers 5 are tapered. At this time, the sector gear 16 in the middle of the connecting seat 6 is separated from the linkage gear 15 in the groove 13 of the gripper 5, and the threaded slider 7 is inserted and fixed at both ends of the mounting shaft 17.

[0050] Clamping action execution:

[0051] When the connecting seats 6 are driven to move closer to each other by the planar thread 10:

[0052] The conical gripper 5 gradually comes into contact with the surface of the material inside the sintering furnace, forming a three-point centering clamp;

[0053] The mounting shaft 17 inside the connecting seat 6 is rigidly connected with the threaded slider 7 through the square end, and the spring 18 made of tungsten alloy is pre-tightened to move the friction plate 19, so that the friction plate 19 is tightly attached to the rotating friction plate 20. The friction force between the two is greater than the reaction force of the material, which ensures the posture locking of the clamping jaw 5 and avoids loosening of the clamping.

[0054] The limiting slider 24 of the moving friction plate 19 slides along the limiting sliding groove 25 of the connecting seat 6, preventing the friction plate from rotating with the mounting shaft 17, and ensuring stable output of the friction force.

[0055] Three, unfolding state conversion process

[0056] Gear engagement trigger:

[0057] When the connecting seat 6 slides outward along the sliding groove 11, the driving gear 23 inside the connecting seat 6 gradually engages with the rack 22 at the bottom end of the mounting seat 4, and at the same time, the sector gear 16 starts to intermittently engage with the linkage gear 15.

[0058] Threaded slider 7 separation action:

[0059] The sector gear 16 moves with the connecting seat 6 to drive the linkage gear 15 to rotate, and then drives the threaded rod 14 in the groove 13 to rotate. The screw threads on both ends of the threaded rod 14 are opposite in direction, so that the symmetrically arranged threaded sliders 7 are separated along the mounting shaft 17 to both ends. When the threaded slider 7 moves to the maximum gap, the strong magnetic block 8 at the bottom end of the mounting seat 4 attracts the slider end face to prevent it from separating from the mounting shaft 17.

[0060] Clamping jaw 5 posture unfolding:

[0061] After the driving gear 23 engages with the rack 22, it drives the gear ring 21 and the rotating friction plate 20 fixed thereon to rotate. The rotating friction plate 20 drives the mounting shaft 17 to rotate through friction force, and the mounting shaft 17 drives the threaded slider 7 and the clamping jaw 5 to deflect as a whole through the square end. When the three connecting seats 6 move to the maximum distance, the clamping jaw 5 is completely unfolded. At this time, the driving gear 23 is disengaged from the rack 22, and the clamping jaw 5 is posture-locked.

[0062] Four, disassembly process of clamping jaw and mounting seat

[0063] 1. Disassembly prerequisite: the clamping jaw 5 is in the unfolded state:

[0064] First, the three clamping jaws 5 are completely unfolded by the "unfolding state conversion process", that is, the connecting seats 6 move to the maximum distance, and the driving gear 23 is disengaged from the rack 22. In this state, the threaded slider 7 is attracted by the strong magnetic block 8, but it is not locked by other structures, and the operation space is sufficient after the clamping jaw 5 is unfolded, which is convenient for disassembly and assembly.

[0065] 2. Disassembly steps:

[0066] 1. Remove the strong magnetic adsorption: the operator uses his hand or a special auxiliary tool such as a plastic crowbar to avoid scratching the parts, and gently pushes the end face of the threaded slider 7 to overcome the adsorption force of the strong magnetic block 8. The adsorption force is designed to be "manually removable without damaging the parts";

[0067] 2. Separate the threaded slider 7 from the mounting shaft 17: because the threaded slider 7 and the mounting shaft 17 are inserted and matched without threaded locking, after the adsorption is removed, the clamping jaw 5 is pulled outward along the axial direction of the mounting shaft 17, so that the threaded slider 7 is separated from the square end of the mounting shaft 17;

[0068] 3. Remove the clamping jaw 5: after the two threaded sliders 7 of a single set of clamping jaws 5 are separated from the mounting shaft 17, the clamping jaw 5 can be removed as a whole from below the connecting seat 6. At this time, the connecting seat 6 and the mounting shaft 17 are still left in the sliding groove 11 of the mounting seat 4, which does not affect other parts;

[0069] 4. Multiple sets of disassembly and repetition: follow the above steps to disassemble the other two sets of clamping jaws 5 in turn. The entire disassembly process does not require the use of wrenches, screwdrivers and other tools, and a single person can complete the disassembly in 1-2 minutes.

[0070] Five, the fixing process of the clamping jaw 5 and the mounting seat 4 is added

[0071] 1. Fixed prerequisite: the connecting seat is in the initial position, and it is necessary to ensure that the three connecting seats 6 are in the "initial position of mutual approach" along the sliding groove 11, that is, the rotating disc 9 is not driven to expand the connecting seat, and the square end of the mounting shaft 17 is free of debris that can be swept and cleaned by compressed air to avoid affecting the insertion.

[0072] 2. Fixing steps:

[0073] 1. Positioning and inserting: align the two threaded sliders 7 of the new clamping jaw 5 with the square end of the mounting shaft 17 in the connecting seat 6, and push the clamping jaw 5 axially to make the threaded slider 7 and the mounting shaft 17 inserted and matched — the square cross-section design can prevent the threaded slider 7 from rotating and deviating, and ensure that the clamping jaw 5 is installed in an upright and coaxial manner with an error of ≤0.3mm;

[0074] 2. Strong magnetic automatic pre-fixing: after the threaded slider 7 is inserted in place, the strong magnetic block 8 at the bottom end of the mounting seat 4 automatically adsorbs the end face of the threaded slider 7, forming a pre-fixing adsorption force to prevent the clamping jaw 5 from falling off during subsequent operations without the need for manual position correction;

[0075] 3. Attitude calibration linkage: after the clamping jaw 5 is pushed to the strong magnetic adsorption, the fan-shaped gear 16 in the middle of the connecting seat 6 and the linkage gear 15 in the recess 13 of the clamping jaw 5 are automatically in the "separated initial state" and the "clamping jaw attitude preset" in the "clamping state working process" to ensure that the clamping jaw 5 can normally enter the subsequent clamping action after being fixed;

[0076] 4. Multi-group fixed repetition: according to the above steps, fix the other two groups of clamping jaws 5 in turn, after the fixation is completed, drive the turntable 9 to trigger the subsequent "clamping state" or "expansion state" action, the single group of clamping jaws takes 1-2 minutes to fix, and the whole fixing process does not have the steps of bolt tightening, torque calibration and the like.

[0077] VI. Function guarantee of key structure

[0078] High temperature resistance and stability design:

[0079] The tungsten alloy spring 18 can withstand the high temperature environment of the sintering furnace to avoid elastic failure; the rigid friction fit of the friction plate replaces the traditional elastic clamping to adapt to the mechanical property requirements under high temperature.

[0080] Precise control of intermittent transmission:

[0081] The intermittent meshing design of the sector gear 16 and the linkage gear 15, the driving gear 23 and the rack 22 makes the separation and expansion action of the clamping jaw 5 only triggered at a specific stroke, avoiding motion interference.

[0082] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sintering furnace feeding clamp, characterized in that, include: The upper arm (1) is rotatably connected to one end of the upper arm (1), and the upper arm (1) is rotatably connected to the drive shaft (31). The lower arm (2) is rotatably connected to the inside of the drive shaft (3). The drive shaft (31) and the driven shaft (3) are connected by a universal joint. Mounting base (4), the end of the forearm (2) away from the upper arm (1) is fixedly connected to the mounting base (4), the side of the mounting base (4) away from the forearm (2) is designed with clamps (5) at equal intervals, and a connecting base (6) is installed between the clamps (5) and the mounting base (4). Threaded sliders (7), threaded sliders (7) are symmetrically arranged at one end of the jaws (5), and the two threaded sliders (7) are installed in conjunction with the connecting seat (6); A strong magnetic block (8) is symmetrically and equidistantly fixed to one end edge of the mounting base (4) near the jaw (5). When the two threaded sliders (7) move to the maximum gap, the strong magnetic block (8) attracts the threaded slider (7). One end of the gripper (5) is provided with a groove (13), and a threaded rod (14) is rotatably connected inside the groove (13). The two ends of the threaded rod (14) are threadedly connected to the two threaded sliders (7). A linkage gear (15) is fixedly connected in the middle of the threaded rod (14), and a sector gear (16) is fixedly connected in the middle of the connecting seat (6). The linkage gear (15) and the sector gear (16) are intermittently meshed. The threaded rod (14) is a bidirectional threaded rod. The connecting seat (6) is rotatably connected to the mounting shaft (17). The two ends of the mounting shaft (17) are square. The two ends of the mounting shaft (17) are respectively inserted into the threaded slider (7). The mounting shaft (17) is fixedly connected to the inside of the mounting shaft (17). The mounting base (4) is rotatably connected to a turntable (9). The turntable (9) is provided with a flat thread (10) on the side near the jaw (5). The mounting base (4) is provided with equidistant grooves (11) on the side near the jaw (5). The grooves (11) are slidably connected to the connecting base (6). The connecting base (6) is provided with an adaptive groove (12) corresponding to the flat thread (10) on one side. The flat thread (10) and the adaptive groove (12) are fitted together. One end of the driven shaft (3) extends into the mounting base (4) and is fixedly connected to the turntable (9). The mounting shaft (17) has a sliding connection of a movable friction plate (19) inside, and a rotating friction plate (20) is fixedly connected to one end of the mounting shaft (17). The movable friction plate (19) and the rotating friction plate (20) are in frictional connection, and a toothed ring (21) is fixedly connected to the outer wall of the rotating friction plate (20). The mounting base (4) has a rack (22) fixedly connected at equal intervals at the bottom end. The connecting base (6) has a drive gear (23) rotatably connected inside. The drive gear (23) meshes intermittently with the rack (22) and the drive gear (23) meshes with the gear ring (21).

2. The sintering furnace feeding clamp according to claim 1, characterized in that, The outer wall of the movable friction plate (19) is symmetrically fixedly connected to the limiting slider (24), and the connecting seat (6) is symmetrically opened with the limiting groove (25). The limiting slider (24) and the limiting groove (25) are slidably connected.

3. The sintering furnace feeding clamp according to claim 1, characterized in that, When the three sets of grippers (5) are at their maximum distance from each other, the three grippers (5) are in an unfolded state. When the drive gear (23) is not engaged with the gear ring (21), the three grippers (5) are in a conical design.

4. The sintering furnace feeding clamp according to claim 1, characterized in that, The frictional force between the moving friction plate (19) and the rotating friction plate (20) is greater than the reaction force of the three grippers (5) clamping the material.

5. The sintering furnace feeding clamp according to claim 1, characterized in that, The spring (18) is made of high-temperature resistant tungsten alloy.

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