Metal powder processing feeding device

Abstract

This invention relates to the field of metal powder processing technology and discloses a metal powder processing feeding device, including a body, a first feeding assembly, a second feeding assembly, and a limiting structure. The first feeding assembly is located above the mold and is used to guide a first material into a first region. The second feeding assembly can extend into the mold, and its outer peripheral wall defines the first region between the mold's inner wall and the outer peripheral wall. The bottom of the second feeding assembly is provided with a discharge section and a pressing and leveling section communicating with a storage cavity. During operation, the first material is first introduced into the first region, and the second material is then introduced into the second region through the discharge section. The second feeding assembly rises axially during the introduction of the second material, causing the second region to gradually form. The pressing and leveling section continuously compacts the second material, achieving compensated filling of the two materials. This device solves the problems of difficulty in evenly loading all materials, difficulty in achieving a level upper surface after feeding, and difficulty in fully filling the mold during the dual-quantity metal powder zoning feeding process.

Description

Technical Field

[0001] This invention relates to the field of metal powder processing technology, and in particular to a metal powder processing feeding device. Background Technology

[0002] Metal powder processing technology is widely used in powder metallurgy forming, composite material preparation, and manufacturing of metal functional structural components. In these processes, it is typically necessary to accurately introduce metal powder into a mold cavity before pressing, sintering, or subsequent forming treatments. Therefore, the uniformity and quantitative accuracy of the material distribution by the feeding device, as well as the adequacy of the mold cavity filling, directly affect the dimensional accuracy, density distribution, and final forming quality of the product.

[0003] Existing methods for feeding metal powder typically involve hopper feeding, guide chute feeding, rotating distribution disc feeding, or simple scraping to introduce a single metal powder into the mold. For molds with relatively simple structures that require only a single material for filling, these methods can usually meet basic material feeding needs.

[0004] However, in some metal powder forming scenarios, different areas within the mold have different requirements for material properties. Therefore, it is necessary to use two metal powders with different properties, each placed in a different area, to achieve different structural or functional characteristics in different parts of the formed part. In such applications requiring the separate placement of two different metal powders in different areas of the mold, existing feeding methods have significant limitations, mainly in the following aspects:

[0005] 1) In the dual-material feeding process, the two metal powders often need to correspond to different main distribution areas within the mold, such as the outer peripheral area and the inner side area, or the main area and the local functional area. Since both metal powders usually need to be pre-measured and their input amount is relatively fixed, it is difficult to accurately match the actual volume, local contour, and natural accumulation state of the powder in different areas within the mold. Therefore, it is easy to encounter situations where the volume of a certain area is insufficient, resulting in the material not being fully loaded, or the volume of a certain area is too large, resulting in the area not being filled.

[0006] 2) In existing technologies, even if two metal powders can be introduced into their respective areas, the powder surfaces after distribution often fail to maintain a consistent height naturally. Especially when the mold opening is large, the powder is susceptible to problems such as localized accumulation, material shortages, voids, or inconsistent heights between areas due to factors like flowability, angle of repose, and area boundary constraints. Uneven powder heights in different areas after distribution not only affect the uniformity of stress during subsequent pressing but may also lead to uneven density distribution in the pressed blank, thus impacting product performance and forming stability.

[0007] 3) In existing dual-material feeding technologies, structures such as annular partitions, separators, baffles, or inserts are often used to pre-divide the mold cavity into two relatively independent areas, and then different metal powders are added to the two areas respectively. Although this method can limit the initial distribution range of the two materials to a certain extent, since metal powders are loose particles, their bulk density and occupied volume will change with particle state, flow characteristics, and the feeding process. Therefore, it is difficult to accurately match the pre-set area volume with the actual filling volume of the two pre-measured materials. This can easily lead to some materials not being fully loaded, insufficient filling in local areas, or inconsistent heights of the upper surfaces of the two areas after feeding, thus affecting the filling effect of the mold and the subsequent pressing quality.

[0008] Therefore, the existing technology still lacks a device that can be used for dual quantitative metal powder partition feeding. This device can not only introduce the two materials into different main distribution areas in the mold, but also flatten and shape a part of the material during the subsequent feeding process, and cause the other part of the material to compensate and fill under high constraint conditions, so that the two materials eventually fill the mold together and form a basically flush upper surface. Summary of the Invention

[0009] The purpose of this invention is to provide a metal powder processing feeding device to solve the problems in the existing dual-material metal powder feeding process, where the volume of different areas is difficult to match with the volume of the quantitative material, resulting in the difficulty of loading both materials evenly during the sequential loading process, the difficulty of making the upper surface of the material flush after distribution, and the difficulty of fully filling the mold.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: a metal powder processing feeding device, comprising: a body, wherein a driving mechanism is provided;

[0011] The first fabric assembly is rotatably mounted inside the machine body and covers the mold, for introducing the first material into the first area inside the mold;

[0012] The second fabric assembly is axially slidably installed inside the first fabric assembly and can slide into the mold. The outer peripheral wall of the second fabric assembly and the inner wall of the mold define the first area. The second fabric assembly has a storage cavity for accommodating the second material inside. The bottom of the second fabric assembly has a discharge part and a pressing and leveling part communicating with the storage cavity.

[0013] A limiting structure is provided to limit the rising end position of the second fabric assembly so that when the second fabric assembly rises to the end position, the pressing and leveling part is flush with the bottom plane of the first fabric assembly.

[0014] The driving mechanism drives the first fabric assembly and the second fabric assembly to rotate. The second fabric assembly rises axially during the process of the second material being discharged through the discharge section, so that a second area for accommodating the second material is gradually formed below the second fabric assembly.

[0015] The pressing and leveling section applies pressure to the second material in the second area during the rising process of the second fabric assembly. The bottom plane of the first fabric assembly is used to form a height constraint on the first material in the first area, so that the materials in the first and second areas are compensated and filled during the flattening process and form a flat upper surface.

[0016] Preferably, the driving mechanism includes a drive motor and a rotating shaft connected to the output end of the drive motor, with a cross fixedly connected to the end of the rotating shaft, and the first fabric assembly fixedly connected to the cross.

[0017] Preferably, a guide rod is fixedly installed on the upper side of the second fabric assembly, the guide rod is slidably connected to the cross, and the limiting structure is adjustablely installed on the upper part of the second fabric assembly. During the rising process of the second fabric assembly, the top end of the limiting structure contacts the cross to form a limit.

[0018] Preferably, the inner cavity of the first fabric assembly has an upper-opening annular groove structure, the interior of the first fabric assembly is provided with a plurality of first guide inner lining blocks, and the bottom of the first fabric assembly is provided with a plurality of discharge ports.

[0019] Preferably, a gate is slidably installed inside the discharge port, and a counterweight is fixedly installed on the side of the gate away from the axis of the first fabric assembly. A guide rail is fixedly installed on the surface of the first fabric assembly, and the counterweight is slidably connected to the guide rail. A return spring is provided on the surface of the guide rail to press against the counterweight. Under the action of the return spring, the gate closes the discharge port so that the bottom plane of the first fabric assembly forms a complete plane.

[0020] Preferably, the discharge section includes a relief groove and a connecting port disposed at the bottom of the second fabric assembly. The groove wall of the relief groove is inclined and smoothly transitions with the pressing and leveling section. The connecting port is disposed on the groove wall of the relief groove to connect the storage chamber of the second fabric assembly with the relief groove.

[0021] Preferably, a plurality of second flow guide liner blocks are installed in the storage cavity of the second fabric assembly.

[0022] Preferably, both the first material and the second material are pre-measured quantitative materials. After the first material is introduced into the first area, the overall filling height is lower than the upper surface of the mold. After the second material is introduced into the second area, the overall filling height in the unpressurized state is higher than the upper surface of the mold.

[0023] Preferably, when the pressing and leveling part applies pressure to the second material, the second material is compacted and sinks, and the first material is caused to expand and move upward into the empty space of the mold under the constraint of the bottom plane of the first fabric assembly, so that the first material and the second material together compensate and fill the mold.

[0024] Preferably, a lifting platform is slidably installed inside the machine body, and a servo electric cylinder is fixedly installed inside the machine body. The mold is placed on the lifting platform, and the lifting platform is driven to move up by the servo electric cylinder so that the first fabric assembly covers the top of the mold.

[0025] The present invention has the following beneficial effects:

[0026] 1. In this invention, the second fabric component first extends into the mold as an inner boundary component, and gradually rises along the axial direction during subsequent rotation, so that the second region is gradually released and formed. The second material is continuously compacted by the pressing and leveling part while being introduced into the second region, thereby avoiding local accumulation and regional loss of control caused by one-time cavity fabrication, which is conducive to improving the stability of the process of zoning fabrication of two materials in sequence.

[0027] 2. In this invention, it is not required that the initial volume of the first region and the second region be precisely matched with the natural stacking volume of the two quantitative materials. Instead, the second material is pressed down and the first material is promoted to expand and move upward into the empty space of the mold by the rotation and rise of the second material assembly, the limited compaction of the pressing and leveling part, and the height constraint of the bottom plane of the first material assembly. This achieves the compensation filling of the two materials in the mold, thereby solving the problems that it is difficult to fill both materials evenly, the upper surface is difficult to be flush after the material is laid, and the mold is difficult to be fully filled.

[0028] 3. This invention combines the high-speed operation of the first material feeding assembly with the centrifugal opening of the gate, allowing the first material to be introduced into the first area through the discharge port during the high-speed feeding stage, which is conducive to its circumferential dispersion along the first area. In the subsequent second material feeding stage, the first and second material feeding assemblies reduce their speeds synchronously, and the gate automatically closes as the centrifugal force decreases, so that the bottom plane of the first material feeding assembly forms a complete plane. This provides a height constraint benchmark for the subsequent compensation filling of the first material and allows the second material to be introduced into the second area more stably under lower speed conditions, reducing the possibility of the second material being excessively mixed into the first material and shifting to the outer periphery of the mold cavity.

[0029] 4. By setting an adjustable limiting structure, the present invention can adjust the insertion depth of the second material feeding component according to the inner cavity depth of different molds, and ensure that the rising end point of the second material feeding component is aligned with the bottom plane of the first material feeding component, thereby improving the device's adaptability to molds of different specifications and helping to ensure the final height consistency after the two materials are fed. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the feeding device proposed in this invention.

[0031] Figure 2 This is a three-dimensional structural diagram of the first fabric assembly and the second fabric assembly proposed in this invention. Figure 1 .

[0032] Figure 3 This is a three-dimensional structural diagram of the first fabric assembly and the second fabric assembly proposed in this invention. Figure 2 .

[0033] Figure 4 This is a top view of the mold proposed in this invention.

[0034] Figure 5 This is a perspective structural diagram of the first fabric assembly proposed in this invention.

[0035] Figure 6 This is a cross-sectional structural diagram of the first fabric component proposed in this invention.

[0036] Figure 7 This is a three-dimensional structural diagram of the second fabric assembly proposed in this invention. Figure 1 .

[0037] Figure 8 This is a three-dimensional structural diagram of the second fabric assembly proposed in this invention. Figure 2 .

[0038] Figure 9 This is a schematic diagram of the front section structure of the second fabric assembly proposed in this invention.

[0039] Figure 10 This is a schematic diagram of the front section structure of the mold proposed in this invention, wherein the first fabric assembly introduces the first material into the first area.

[0040] Figure 11 This is a schematic diagram of the front section structure of the mold proposed in this invention, wherein the second fabric assembly introduces the second material into the second region.

[0041] In the picture:

[0042] 100. Body; 102. Drive mechanism; 103. Cross-shaped component; 104. Lifting platform; 105. Servo electric cylinder;

[0043] 200. First fabric assembly; 201. First guide liner block; 202. Discharge port; 203. Gate; 204. Counterweight block; 205. Guide rail; 206. Return spring;

[0044] 300. Second fabric assembly; 301. Outer peripheral wall; 302. Discharge section; 303. Pressing and leveling section; 304. Guide rod; 305. Relief groove; 306. Connecting port; 307. Second guide liner block;

[0045] 400, limiting structure; 500, mold. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element 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 this invention.

[0048] Example 1

[0049] Reference Figures 1-11 A metal powder processing feeding device includes a body 100, a first feeding assembly 200, a second feeding assembly 300, and a limiting structure 400. A lifting platform 104 is slidably installed inside the body 100, and a servo electric cylinder 105 is fixedly installed inside the body 100. The servo electric cylinder 105 drives the lifting platform 104 to move up and down, and a mold 500 is placed on the lifting platform 104. A drive mechanism 102 is provided inside the body 100. The drive mechanism 102 drives the first feeding assembly 200 and the second feeding assembly 300 to rotate, and cooperates with the guide structure of the second feeding assembly 300 to make it rise axially, so as to complete the partitioned feeding of the two materials in the mold 500 and subsequent flattening.

[0050] Specifically, such as Figure 2 , Figure 3 As shown, the first fabric assembly 200 is rotatably mounted inside the machine body 100. The lifting platform 104 moves upward, causing the bottom plane of the first fabric assembly 200 to cover the mold 500. The first fabric assembly 200 is used to guide the first material into a first area within the mold 500. The first fabric assembly 200 has a bottom plane located above the mold 500, which can serve as a height constraint reference plane for the first material in subsequent fabrication stages.

[0051] like Figure 2 , Figure 3As shown, the second fabric assembly 300 is axially slidably installed within the first fabric assembly 200 and can slidably extend into the mold 500. A first region is defined between the outer peripheral wall 301 of the second fabric assembly 300 and the inner wall of the mold 500. The second fabric assembly 300 has a storage cavity for accommodating the second material inside, and its bottom has a discharge section 302 communicating with the storage cavity and a pressing and leveling section 303.

[0052] like Figure 10 As shown, the limiting structure 400 is disposed on the second fabric assembly 300 to limit the rising end position of the second fabric assembly 300 so that when the second fabric assembly 300 rises to the end position, the pressing and leveling part 303 is flush with the bottom plane of the first fabric assembly 200.

[0053] The working process of this embodiment is as follows:

[0054] Before feeding, the mold 500 is placed at the corresponding position on the lifting platform 104. The lifting platform 104 is driven to move upward a certain distance by the servo electric cylinder 105, so that the first fabric assembly 200 covers the upper side of the mold 500, maintaining a certain gap between them. The second fabric assembly 300 extends into the mold 500. At this time, the outer peripheral wall 301 of the second fabric assembly 300 and the inner wall of the mold 500 form a first region. Both the first material and the second material are pre-measured quantitative materials, preferably a metal powder system that can be co-pressed and co-sintered. During the feeding process, the first material is first introduced into the first fabric assembly 200.

[0055] like Figure 10 As shown, after the drive mechanism 102 is activated, it drives the first fabric assembly 200 and the second fabric assembly 300 to rotate. The first fabric assembly 200 rotates and introduces the first material into the first area within the mold 500. Since the second fabric assembly 300 extends into the mold 500 beforehand, it acts as an inner boundary element during the first material feeding stage, causing the first material to be preferentially distributed in the first area between the outer periphery of the second fabric assembly 300 and the inner wall of the mold 500. After the first material is introduced, its overall filling height is lower than the upper surface of the mold 500.

[0056] like Figure 11As shown, the second material is introduced into the second fabric assembly 300, and the second material is introduced into the area below the second fabric assembly 300 through the discharge part 302 at the bottom of the second fabric assembly 300. At the same time, the second fabric assembly 300 rotates relative to the mold 500 and rises axially under the action of the drive mechanism 102, so that a second area for accommodating the second material is gradually formed between the bottom of the second fabric assembly 300 and the bottom surface of the mold 500. Since the second area is not formed all at once, but is gradually released during the rotation and rise of the second fabric assembly 300, the second material can enter the corresponding space as the second area is gradually formed.

[0057] As the second fabric assembly 300 continues to rise, the pressing and leveling part 303 located at its bottom continuously applies pressure to the second material in the second region, causing the second material to gradually compact and expand circumferentially. Simultaneously, the bottom plane of the first fabric assembly 200 creates a height constraint on the first material. Under pressure, the first material expands and moves upward into the empty space of the mold 500, thereby allowing the first material in the first region and the second material in the second region to jointly fill the internal space of the mold 500.

[0058] When the second fabric assembly 300 rises to the endpoint position defined by the limiting structure 400, the pressing and leveling part 303 is flush with the bottom plane of the first fabric assembly 200. At this time, the two materials in the first and second regions together form a basically flush upper surface, thereby achieving full filling and flat fabric of the dual quantitative materials in the mold 500.

[0059] In this embodiment, the initial volume of the first and second regions is not required to be precisely matched with the natural accumulation volume of the first and second materials. Instead, the second material is pressed down and the first material is moved upward by the rotation of the second fabric assembly 300, the second material is compacted by the pressing and leveling part 303, and the height of the bottom plane of the first fabric assembly 200 is constrained. This causes the second material to be pressed down and the first material to expand and move upward into the empty space of the mold 500. As a result, the two materials fill the mold 500 together during the sequential loading process and form a basically flush upper surface, thus achieving the compensation filling of the two materials in the mold 500.

[0060] Example 2

[0061] Based on Example 1, this example further illustrates the rotation, lifting and endpoint limiting of the second fabric assembly 300.

[0062] In this embodiment, as Figure 1 , Figure 2 As shown, the drive mechanism 102 includes a drive motor and a rotating shaft connected to the output end of the drive motor. A cross 103 is fixedly connected to the end of the rotating shaft. The first fabric assembly 200 is fixedly connected to the cross 103, so that the first fabric assembly 200 can rotate synchronously under the drive of the drive motor.

[0063] like Figure 2 As shown, a guide rod 304 is fixedly installed on the upper side of the second fabric assembly 300. The guide rod 304 is slidably connected to the cross 103 to guide the movement direction of the second fabric assembly 300 and ensure that the second fabric assembly 300 can stably rise and fall axially during rotation. A limiting structure 400 is adjustablely installed on the upper part of the second fabric assembly 300. During the rising of the second fabric assembly 300, the top end of the limiting structure 400 contacts the cross 103 to form a limit.

[0064] like Figure 7 , Figure 8 As shown, the bottom of the second fabric assembly 300 is provided with a discharge section 302 communicating with the storage chamber and a pressing and leveling section 303. The discharge section 302 includes a relief groove 305 and a connecting port 306 disposed at the bottom of the second fabric assembly 300. The groove wall of the relief groove 305 is inclined and smoothly transitions with the pressing and leveling section 303. The connecting port 306 is disposed on the groove wall of the relief groove 305 to communicate the storage chamber of the second fabric assembly 300 with the relief groove 305. A plurality of second guide inner liner blocks 307 are installed in the storage chamber of the second fabric assembly 300 so that the second material is distributed circumferentially along the inside of the second fabric assembly 300 and moves toward each connecting port 306.

[0065] like Figure 9 As shown, the second material is introduced into the relief groove 305 through the connecting port 306, and the second material and the inclined groove wall of the relief groove 305 form a force cooperation. Figure 9 Fcombined, F1, and F2 are force diagrams provided for ease of understanding the interaction. Fcombined represents the resultant force of the second material acting on the inclined groove wall, while F1 and F2 represent its vertical and horizontal components, respectively. Through this interaction, in conjunction with the rotational movement of the second fabric assembly 300 and the guiding engagement between the guide rod 304 and the cross 103, the second material can move along the relief groove 305 towards the pressing and leveling section 303. Under the action of the pressing and leveling section 303, it is pressed downwards into the second region. Simultaneously, the reaction force of F1 promotes the gradual axial upward movement of the second fabric assembly 300.

[0066] During operation, the second fabric assembly 300, under the action of the drive mechanism 102, rotates relative to the mold 500 around its own axis and rises axially under the guidance of the guide rod 304 and the cross 103. As the second fabric assembly 300 gradually rises, the space between its bottom and the bottom surface of the mold 500 gradually increases, thereby gradually releasing and forming the second region. During this process, the second material is continuously introduced into the second region through the discharge section 302.

[0067] As the second fabric assembly 300 continues to rise, the pressure of the pressing and leveling section 303 on the second material in the second area gradually increases, and the second material is gradually compacted. At the same time, under the constraint of the bottom plane of the first fabric assembly 200, the first material expands and moves upward into the empty space of the mold 500, thereby realizing the compensation filling of the two materials.

[0068] When the second fabric assembly 300 rises to the predetermined height, the top of the limiting structure 400 contacts the cross 103, preventing the second fabric assembly 300 from rising further.

[0069] It should be noted that the inner cavity depth of different molds 500 is different. By adjusting the extension length of the limiting structure 400, the rising end position of the second fabric assembly 300 can be limited, so that the pressing and leveling part 303 is flush with the bottom plane of the first fabric assembly 200 at the end position, and adapts to molds 500 with different inner cavity depths.

[0070] In this embodiment, by setting a guide rod 304 and an adjustable limiting structure 400, the second material feeding assembly 300 can not only rotate and rise stably, but also stop reliably after reaching the target position. This not only improves the device's adaptability to molds 500 of different specifications, but also helps to ensure the final height consistency after the two materials are fed.

[0071] Example 3

[0072] Based on Embodiments 1 and 2, this embodiment further illustrates the centrifugal opening and closing discharge structure and the phased feeding process of the first feeding assembly 200.

[0073] In this embodiment, as Figure 5 , Figure 6 As shown, the inner cavity of the first fabric assembly 200 has an upper-opening annular groove structure. Multiple first flow-guiding inner lining blocks 201 are disposed inside the first fabric assembly 200, and multiple discharge ports 202 are opened at the bottom of the first fabric assembly 200. Each first flow-guiding inner lining block 201 is used to guide the first material, causing the first material to be distributed circumferentially inside the first fabric assembly 200 and move towards each discharge port 202.

[0074] like Figure 3 As shown, a gate 203 is slidably installed inside each discharge port 202, and a counterweight 204 is fixedly installed on the side of the gate 203 away from the axis of the first fabric assembly 200. A guide rail 205 is fixedly installed on the surface of the first fabric assembly 200, and the counterweight 204 is slidably connected to the guide rail 205. A return spring 206 is provided on the surface of the guide rail 205 to press against the counterweight 204. Under the action of the return spring 206, the gate 203 remains closed at the discharge port 202, so that the bottom plane of the first fabric assembly 200 forms a complete plane.

[0075] In this embodiment, the fabrication process of the first material and the second material is divided into a high-speed fabrication stage and a low-speed fabrication stage:

[0076] S1, High-speed fabric feeding stage

[0077] During the high-speed material feeding stage, the pre-measured first material is added into the first material feeding assembly 200, and the drive mechanism 102 drives the first material feeding assembly 200 to run at a high speed. When the speed of the first material feeding assembly 200 reaches a predetermined value, the gate 203 moves outward along the guide rail 205 under the action of centrifugal force on the counterweight 204, thereby opening the corresponding discharge port 202. The first material is discharged into the first area of ​​the mold 500 through the discharge port 202. It should be noted that the predetermined value of the speed of the first material feeding assembly 200 is determined by experimental calibration based on the matching relationship between the centrifugal force required to open the gate 203 and the restoring force of the return spring 206, combined with the mass and structural dimensions of the counterweight 204.

[0078] Since the first fabric assembly 200 is rotating at a high speed during this stage, the first material is introduced into the first area through the discharge port 202 in a scattered feeding state, which is conducive to the first material being dispersed and spread out along the circumference of the first area and reducing local accumulation in the first area, thus providing more favorable initial fabric conditions for the subsequent introduction of the second material.

[0079] When the first material is discharged into the first area by the first fabric assembly 200, the first area is not yet fully filled.

[0080] S2, Low-speed fabric production stage

[0081] During the low-speed feeding phase, the drive mechanism 102 decelerates, and the first feeding assembly 200 and the second feeding assembly 300 decelerate synchronously. As the rotational speed decreases, the centrifugal force on the gate 203 decreases, and it returns to its original position under the action of the return spring 206, closing the discharge port 202 again. At this time, the bottom plane of the first feeding assembly 200 re-forms a complete plane, thereby providing a stable height constraint reference for subsequent compensation filling of the first material.

[0082] Subsequently, the pre-measured second material is added into the second fabric assembly 300, and the second material is introduced into the second region through the discharge part 302 at the bottom of the second fabric assembly 300. As the second fabric assembly 300 rises, the second region gradually forms. The pressing and leveling part 303 continuously applies pressure to the second material in the second region, causing the second material to gradually compact and expand circumferentially. It should be noted that as the amount of second material in the second fabric assembly 300 gradually decreases, its weight gradually decreases. Therefore, in the early stage of fabric application, the second material has a significant compacting effect on the second region, while in the later stage, the applied pressure gradually decreases. Until the top of the limiting structure 400 contacts the cross 103 to form a limit, the pressing and leveling part 303 is flush with the bottom plane of the first fabric assembly 200 at its endpoint, thus completing the shaping of the upper surface of the material in both the first and second regions.

[0083] Meanwhile, the bottom plane of the first fabric assembly 200 forms a height constraint on the first material. Under pressure, the first material expands and moves upward into the empty space of the mold 500, thereby filling the internal space of the mold 500 together with the second material. In this embodiment, it is not required that the initial volume of the first region and the second region be precisely matched with the natural stacking volume of the two quantitative materials. Instead, the first region is first placed in a state where it is not completely filled. Then, the second material is introduced into the second region, and the rotation and rise of the second fabric assembly 300, the continuous compaction of the second material by the pressing and leveling part 303, and the height constraint of the bottom plane of the first fabric assembly 200 are used to make the two materials compensate and fill the mold 500. This solves the problems that the two materials are difficult to be fully loaded, the upper surface is difficult to be flush after the fabric is laid, and the mold 500 is difficult to be fully filled.

[0084] Since the second material is introduced at a lower rotation speed, it can reduce the disturbance of the distribution state of the first material in the first area and reduce the possibility of the second material being over-mixed into the first material and shifting to the outer periphery of the inner cavity of the mold 500, thereby improving the stability and controllability of the dual-material partitioning process.

[0085] In this embodiment, the high-speed operation of the first material feeding assembly 200 is combined with the centrifugal opening of the gate 203, so that the first material is introduced into the first area through the discharge port 202 in a scattered manner during the high-speed feeding stage, which is conducive to spreading out in the circumferential direction of the first area. In the subsequent second material feeding stage, the first material feeding assembly 200 and the second material feeding assembly 300 reduce their speeds synchronously, and the gate 203 automatically closes as the centrifugal force decreases, so that the bottom plane of the first material feeding assembly 200 forms a complete plane. This not only provides a height constraint benchmark for the subsequent compensation filling of the first material, but also allows the second material to be introduced into the second area more stably under lower speed conditions, reducing the possibility of the second material being excessively mixed into the first material and shifting to the outer periphery of the inner cavity of the mold 500.

[0086] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A metal powder processing feeding device, characterized in that, include: The body (100) has a drive mechanism (102) inside it; A first fabric assembly (200) is rotatably mounted inside the body (100) and covers the mold (500) for introducing a first material into a first area within the mold (500); The second fabric assembly (300) is axially slidably installed inside the first fabric assembly (200) and can slide into the mold (500). The outer peripheral wall (301) of the second fabric assembly (300) and the inner wall of the mold (500) define the first region. The second fabric assembly (300) is provided with a storage cavity for accommodating the second material. The bottom of the second fabric assembly (300) is provided with a discharge part (302) communicating with the storage cavity and a pressing and leveling part (303). A limiting structure (400) is used to limit the rising end position of the second fabric assembly (300) so that when the second fabric assembly (300) rises to the end position, the pressing and leveling part (303) is flush with the bottom plane of the first fabric assembly (200); The driving mechanism (102) drives the first fabric assembly (200) and the second fabric assembly (300) to rotate. The second fabric assembly (300) rises axially during the process of the second material being discharged through the discharge section (302), so that a second area for accommodating the second material is gradually formed below the second fabric assembly (300). The pressing and leveling part (303) applies pressure to the second material in the second area during the rising process of the second fabric assembly (300). The bottom plane of the first fabric assembly (200) is used to form a height constraint on the first material in the first area, so that the materials in the first area and the second area are compensated and filled during the flattening process and form a flat upper surface.

2. The metal powder processing feeding device according to claim 1, characterized in that: The drive mechanism (102) includes a drive motor and a rotating shaft connected to the output end of the drive motor. A cross (103) is fixedly connected to the end of the rotating shaft, and the first fabric assembly (200) is fixedly connected to the cross (103).

3. The metal powder processing feeding device according to claim 2, characterized in that: A guide rod (304) is fixedly installed on the upper side of the second fabric assembly (300). The guide rod (304) is slidably connected to the cross (103). The limiting structure (400) is adjustablely installed on the upper part of the second fabric assembly (300). During the rising process of the second fabric assembly (300), the top end of the limiting structure (400) contacts the cross (103) to form a limit.

4. The metal powder processing feeding device according to claim 1, characterized in that: The inner cavity of the first fabric assembly (200) has an upper-opening annular groove structure. The first fabric assembly (200) is provided with a plurality of first guide inner liner blocks (201) and the bottom of the first fabric assembly (200) is provided with a plurality of discharge ports (202).

5. A metal powder processing feeding device according to claim 4, characterized in that: A gate (203) is slidably installed inside the discharge port (202). A counterweight (204) is fixedly installed on the side of the gate (203) away from the axis of the first fabric assembly (200). A guide rail (205) is fixedly installed on the surface of the first fabric assembly (200). The counterweight (204) is slidably connected to the guide rail (205), and a return spring (206) is provided on the surface of the guide rail (205) to press against the counterweight (204). Under the action of the return spring (206), the gate (203) closes the discharge port (202) so that the bottom plane of the first fabric assembly (200) forms a complete plane.

6. The metal powder processing feeding device according to claim 1, characterized in that: The discharge section (302) includes a relief groove (305) and a connecting port (306) disposed at the bottom of the second fabric assembly (300). The wall of the relief groove (305) is inclined and smoothly transitions to the pressing and leveling section (303). The connecting port (306) is disposed on the wall of the relief groove (305) to connect the storage cavity of the second fabric assembly (300) with the relief groove (305).

7. A metal powder processing feeding device according to claim 6, characterized in that: The second fabric assembly (300) has a plurality of second flow guide liner blocks (307) installed in the storage cavity.

8. The metal powder processing feeding device according to claim 1, characterized in that: Both the first material and the second material are pre-measured quantitative materials. After the first material is introduced into the first area, the overall filling height is lower than the upper plane of the mold (500). After the second material is introduced into the second area, the overall filling height in the unpressurized state is higher than the upper plane of the mold (500).

9. A metal powder processing feeding device according to claim 1, characterized in that: When the pressing and leveling part (303) applies pressure to the second material, the second material is compacted and sinks, and the first material is caused to expand and move upward into the empty space of the mold (500) under the constraint of the bottom plane of the first fabric assembly (200), so that the first material and the second material together compensate and fill the mold (500).

10. A metal powder processing feeding device according to claim 1, characterized in that: A lifting platform (104) is slidably installed inside the machine body (100), and a servo electric cylinder (105) is fixedly installed inside the machine body (100). The mold (500) is placed on the lifting platform (104), and the lifting platform (104) is driven to move upward by the servo electric cylinder (105), so that the first fabric assembly (200) covers the mold (500).

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