Powder feeding device

Abstract

The utility model belongs to the field of tabletting forming, and particularly relates to a powder feeding device which comprises a rotary placing platform and a powder pouring mechanism. The rotary containing platform comprises a rotating mechanism and a containing table arranged at the output end of the rotating mechanism, the containing table is used for containing a to-be-fed mold, and the rotating mechanism is used for driving the containing table and the mold to rotate in the discharging process. The powder pouring mechanism comprises a rotating motor and a chuck arranged at the output end of the rotating motor, the chuck is used for clamping the powder material container, and the rotating motor is used for driving the powder material container to incline and then swing so as to pour materials to the mold on the placing table. The rotary placing platform and the powder pouring mechanism are combined for use, so that the powder material can be uniformly fed in each direction in the die cavity after being fed into the die cavity, the upper end of the powder material is relatively smooth, the stress can be uniformly distributed during tabletting in the die cavity, the powder green body is uniformly stressed, the success rate and quality of tabletting are further ensured, and the production efficiency is improved. Meanwhile, the service life of the mold is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of tableting and specifically relates to a powder feeding device. Background Technology

[0002] In modern laboratories, solid-state sintering of ceramics is an important method for ceramic preparation, and powder pressing is a crucial step in solid-state sintering of ceramic powders. Generally, powder pressing includes steps such as weighing powder, pouring it into a mold, closing the top mold, and pressing. In existing automated pressing stations, the powder is poured from a large-diameter container through a funnel. This method requires an additional funnel, increasing the complexity of overall instrument assembly and cleaning, and making the powder more susceptible to contamination. At the same time, the funnel picks up powder, affecting the quantitative addition of powder. After entering the mold, the powder is piled up like sand, which affects the stress distribution during pressing, resulting in uneven stress on the powder green body, greatly affecting the success rate of pressing, and even damaging the mold. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a powder feeding device that ensures uniform powder feeding and guarantees the quality of tablet forming.

[0004] This utility model provides a powder feeding device, including a rotating placement platform and a powder pouring mechanism;

[0005] The rotating placement platform includes a rotating mechanism and a placement platform disposed at the output end of the rotating mechanism. The placement platform is used to place the mold to be loaded, and the rotating mechanism is used to drive the placement platform and the mold to rotate during the unloading process.

[0006] The powder pouring mechanism includes a rotary motor and a chuck located at the output end of the rotary motor. The chuck is used to grip the powder material container, and the rotary motor is used to drive the powder material container to tilt and swing, pouring the powder into the mold on the placement table.

[0007] Furthermore, the powder pouring mechanism also includes a three-axis moving platform, and the rotary motor is located at the output end of the three-axis moving platform;

[0008] The three-axis moving platform can drive the outlet of the powder material container to align with the inlet of the mold, drive the powder material container to move up and down during the pouring process, and invert the powder material container above the inlet of the mold after the pouring process.

[0009] Furthermore, the rotary motor and the chuck are combined to form an electrically operated rotary gripper.

[0010] Furthermore, the rotation axis of the placement platform is arranged vertically, while the rotation axis of the rotary motor is arranged horizontally.

[0011] Furthermore, the placement platform is provided with fitting grooves for fitting the mold.

[0012] Furthermore, this also includes robotic arms;

[0013] The robotic arm is used to transport the mold to the placement table before loading and to transfer the mold to the next station after loading; the robotic arm is also used to transport the powder material container containing the powder material to the chuck before loading and to transport the powder material container to the next station after loading.

[0014] Furthermore, the robotic arm includes a robotic arm body and a gripping head;

[0015] The gripping head includes a mold gripper and a container gripper. The mold gripper is used to grip the mold, and the container gripper is used to grip the powder material container.

[0016] Furthermore, the mold chuck includes two clamping plates I that can be brought closer together or moved further apart, and an arc-shaped groove disposed on opposite sides of the two clamping plates I.

[0017] The container clamp includes two clamping plates II that can be brought closer together or moved further apart, and four clamping rods. Each clamping plate II has two clamping rods at its end, and the four clamping rods are arranged in a rectangular pattern.

[0018] Furthermore, the clamping plate I and the clamping plate II move synchronously;

[0019] The distance between the two clamping plates I is always greater than the distance between the two clamping plates II.

[0020] Furthermore, this powder feeding device also includes a mold placement platform for placing molds, a powder material container placement platform for placing powder material containers, and a powder material container placement transfer platform, wherein the powder material container placement transfer platform is disposed on the side of the powder pouring mechanism.

[0021] The robotic arm is used to transfer the mold between the mold placement platform and the placement platform, and also to transfer the powder material container between the powder material container placement platform, the powder material container placement transfer platform and the chuck.

[0022] The beneficial effects of this invention are as follows: the rotating placement platform ensures uniform powder distribution when entering the mold cavity, preventing the formation of cone-shaped particles that could affect the final tableting process; the powder-discharging mechanism ensures the powder is completely emptied from the container, preventing powder residue, and also allows for lateral movement of the powder as it enters the mold cavity, resulting in a more dispersed distribution area and preventing concentrated accumulation. The combined use of the rotating placement platform and the powder-discharging mechanism ensures uniform powder distribution in all directions within the mold cavity, with a relatively flat top surface. This allows for even stress distribution during tableting, ensuring uniform stress on the green powder, thus guaranteeing tableting success rate and quality, while also extending the mold's lifespan. Attached Figure Description

[0023] Appendix Figure 1 This is a schematic diagram of the structure of the tablet pressing station in this utility model;

[0024] Appendix Figure 2 This is a schematic diagram of the powder feeding device in this utility model;

[0025] Appendix Figure 3 This is a schematic diagram of the structure of the powder feeding device after the outer shell is hidden in this utility model;

[0026] Appendix Figure 4 This is a schematic diagram of the gripping head in this utility model;

[0027] Appendix Figure 5 This is a bottom view of the gripper head in this utility model.

[0028] In the diagram, 1-rotating placement platform; 101-rotating mechanism; 102-placement stage; 1021-fitting groove; 2-powder pouring mechanism; 201-rotary motor; 202-clamp; 203-three-axis moving platform; 3-manipulator; 301-manipulator body; 302-gripping head; 3021-mold chuck; 30211-gripping plate I; 30212-arc groove; 3022-container chuck; 30221-gripping plate II; 30222-gripping rod; 4-mold; 5-powder material container; 6-powder material container placement stage; 7-mold placement stage; 8-powder material container placement transfer stage. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] As attached Figure 1 -Appendix Figure 5 As shown, this utility model provides a powder feeding device, including a rotating placement platform 1 and a powder pouring mechanism 2;

[0035] The rotating placement platform 1 includes a rotating mechanism 101 and a placement platform 102 disposed at the output end of the rotating mechanism 101. The placement platform 102 is used to place the mold 4 to be loaded. The loading port of the mold 4 is arranged facing upward. The rotating mechanism 101 is used to drive the placement platform 102 and the mold 4 to rotate during the material pouring process, so that the powder is kept uniform and compacted when it enters the mold cavity of the mold 4, and will not form a sand cone shape that affects the final tableting.

[0036] The powder pouring mechanism 2 includes a rotary motor 201 and a chuck 202 disposed at the output end of the rotary motor 201. The chuck 202 is used to grip the powder material container 5, and the rotary motor 201 is used to drive the powder material container 5 to tilt and swing, pouring the powder into the mold 4 on the placement platform 102. That is, the outlet of the powder material container 5 gripped by the chuck 202 is aligned with the inlet on the mold 4. When pouring powder, the powder material container 5 swings around the rotation axis of the rotary motor 201. On the one hand, this ensures that the powder material in the powder material container 5 is completely poured out, avoiding the retention of powder material in the powder material container 5. On the other hand, it allows the powder material to have a lateral movement tendency during its entry into the mold cavity, making the landing point of the powder material in the mold cavity more dispersed, increasing the distribution area, and thus avoiding the concentrated accumulation of powder material.

[0037] The combined use of the rotating placement platform 1 and the powder pouring mechanism 2 in this utility model can ensure that the powder material is fed into the mold cavity in all directions, and the upper end of the powder material is relatively flat, so that the stress distribution is uniform when the powder blank is pressed into tablets in the mold cavity, and the powder blank is subjected to uniform force, thereby ensuring the success rate and quality of tablet pressing, while ensuring the service life of the mold 4.

[0038] In one embodiment, the powder pouring mechanism 2 further includes a three-axis moving platform 203, and the rotary motor 201 is disposed at the output end of the three-axis moving platform 203;

[0039] The three-axis moving platform 203 can drive the outlet of the powder material container 5 to align with the inlet of the mold 4, thereby ensuring that the powder material in the container 5 is aligned with the inlet of the mold 4 during pouring, preventing the powder material from being poured to other places. The three-axis moving platform 203 can also drive the powder material container 5 to move up and down during the pouring process, which can also prevent the powder material from remaining in the container 5 and improve the uniformity of pouring into the mold cavity, reducing concentrated accumulation. After the powder material container 5 is poured, the three-axis moving platform 203 can also invert the powder material container 5 above the inlet of the mold 4. At this time, it can further prevent the powder material from remaining in the container 5, realizing that all the powder material in the container 5 is poured into the mold cavity. During this process, the three-axis moving platform 203 can also move up and down, thereby further enhancing the pouring effect.

[0040] In this embodiment, the addition of a three-axis moving platform 203 significantly improves the accuracy, quality, and completion of material pouring.

[0041] In one embodiment, the rotary motor 201 and the chuck 202 are combined to form an electric rotary gripper. In this embodiment, the rotary motor 201 and the chuck 202 adopt existing electric rotary grippers, which simplifies the design cost and facilitates precise control of speed, position and clamping force.

[0042] In one embodiment, the rotation axis of the placement platform 102 is arranged vertically, so that the mold 4 is arranged vertically with its inlet facing upward, which can ensure that the powder material falls into the mold cavity through the inlet by gravity. The rotation axis of the rotary motor 201 is arranged horizontally, so that the powder material container 5 can be rotated and tilted with a horizontal axis.

[0043] In one embodiment, the placement platform 102 is provided with a fitting groove 1021 for fitting the mold 4. By providing the fitting groove 1021, the fixing stability of the mold 4 and the placement platform 102 can be improved after the mold 4 is installed, thereby preventing the mold 4 from shifting.

[0044] In one embodiment, the powder feeding device further includes a robotic arm 3;

[0045] The robotic arm 3 is used to transport the mold 4 to the placement table 102 before loading, and to transfer the mold 4 to the next station after loading. The robotic arm 3 is also used to transport the powder material container 5 containing powder material on the powder material container placement transfer table 8 to the chuck 202 before loading, and to transport the powder material container 5 to the next station after loading. Specifically, multiple powder material containers 5 are supported on the powder material container placement transfer table 8 by a support plate. At this time, after the powder in the powder material container 5 is poured into the mold 4, the robotic arm 3 transports the loaded powder material container 5 to the support plate. That is, the transfer of the mold 4 and the powder material container 5 is completed by the robotic arm 3, which solves the problem of time wasted due to manual transfer of the mold 4 and the powder material container 5 to multiple positions, and thus realizes automated loading.

[0046] In one embodiment, the robotic arm 3 includes a robotic arm body 301 and a gripping head 302;

[0047] The gripping head 302 includes a mold gripper 3021 and a container gripper 3022. The mold gripper 3021 is used to grip the mold 4, and the container gripper 3022 is used to grip the powder material container 5. In this embodiment, one robotic arm 3 can be used to grip both the mold 4 and the powder material container 5, which can improve utilization and reduce costs.

[0048] In one embodiment, the mold chuck 3021 includes two clamping plates I 30211 that can be brought closer together or moved further apart, and an arc-shaped groove 30212 disposed on the opposite side of the two clamping plates I 30211. The two arc-shaped grooves 30212 can clamp the side wall of the mold 4 after they are engaged.

[0049] In one embodiment, the container clamp 3022 includes two clamping plates II 30221 that can be brought closer together or moved further apart, and four clamping rods 30222. Each clamping plate II 30221 has two clamping rods 30222 at its end, and the four clamping rods 30222 are arranged in a rectangular pattern. The four clamping rods 30222, when combined, can clamp the powder material container 5 with a test tube structure.

[0050] In one embodiment, the clamping plate I 30211 and the clamping plate II 30221 move synchronously; the distance between the two clamping plates I 30211 is always greater than the distance between the two clamping plates II 30221.

[0051] Since the diameter of the powder material container 5 is smaller than the diameter of the mold 4, and the robot arm 3 can only grip one of the mold 4 and the powder material container 5 at the same time, the spacing between the two gripping plates I 30211 and the two gripping plates II 30221 can be designed to ensure that the mold chuck 3021 and the container chuck 3022 do not interfere with each other.

[0052] This powder feeding device also includes a mold placement platform 7 for placing molds 4, a powder material container placement platform 6 for placing powder material containers 5, and a powder material container transfer platform 8. The powder material container transfer platform 8 is located on the side of the powder dispensing mechanism 2. The robotic arm 3 is used to transfer molds 4 between the mold placement platform 7 and the placement platform 102, and also to transfer powder material containers 5 between the powder material container placement platform 6, the powder material container transfer platform 8, and the chuck 202. The mold placement platform 7 is used to store unpowdered molds 4, the powder material container placement platform 6 is used to store multiple sets of support plates, each support plate is provided with multiple powder material containers 5, and the powder material container transfer platform 8 is used to place one set of support plates. Since the powder material container transfer platform 8 is located on the side of the powder dispensing mechanism 2, the distance between the powder material containers 5 and the powder dispensing mechanism 2 is simplified, thus improving efficiency. Preferably, the mold chuck 3021 can also directly grip the carrier plate. Specifically, the carrier plate is gripped by two gripping plates I 30211. That is, the mold chuck 3021 can not only use the arc groove 30212 to grip the fixture, but also use the gripping plates I 30211 to grip the carrier plate, further improving the utilization rate of the robot arm 3.

[0053] The above description is merely an embodiment and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations, modifications, or alterations to the technical solution of this utility model without departing from its scope. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model, without departing from its scope, should fall within the protection scope of this utility model.

Claims

1. A powder feeding device, characterized in that, It includes a rotating placement platform (1) and a powder pouring mechanism (2); The rotating placement platform (1) includes a rotating mechanism (101) and a placement table (102) disposed at the output end of the rotating mechanism (101). The placement table (102) is used to place the mold (4) to be loaded. The rotating mechanism (101) is used to drive the placement table (102) and the mold (4) to rotate during the unloading process. The powder pouring mechanism (2) includes a rotary motor (201) and a chuck (202) disposed at the output end of the rotary motor (201). The chuck (202) is used to clamp the powder material container (5). The rotary motor (201) is used to drive the powder material container (5) to tilt and swing, pouring the powder into the mold (4) on the placement platform (102).

2. The powder feeding device as described in claim 1, characterized in that, The powder pouring mechanism (2) also includes a three-axis moving platform (203), and the rotary motor (201) is located at the output end of the three-axis moving platform (203); The three-axis moving platform (203) can drive the outlet of the powder material container (5) to align with the inlet of the mold (4), can drive the powder material container (5) to move up and down during the pouring process, and can invert the powder material container (5) above the inlet of the mold (4) after the powder material container (5) is poured.

3. The powder feeding device as described in claim 1, characterized in that, The rotary motor (201) and the chuck (202) are combined to form an electric rotary gripper.

4. The powder feeding device as described in claim 1, characterized in that, The rotation axis of the placement platform (102) is arranged vertically, and the rotation axis of the rotary motor (201) is arranged horizontally.

5. The powder feeding device as described in claim 1, characterized in that, The placement platform (102) is provided with a fitting groove (1021) for fitting the mold (4).

6. The powder feeding device according to any one of claims 1-5, characterized in that, It also includes robotic arms (3); The robotic arm (3) is used to transport the mold (4) to the placement table (102) before loading and to transfer the mold (4) to the next station after loading; the robotic arm (3) is also used to transport the powder material container (5) containing powder material to the chuck (202) before loading and to transport the powder material container (5) to the next station after loading.

7. The powder feeding device as described in claim 6, characterized in that, The robotic arm (3) includes a robotic arm body (301) and a gripping head (302). The gripping head (302) includes a mold gripper (3021) and a container gripper (3022). The mold gripper (3021) is used to grip the mold (4), and the container gripper (3022) is used to grip the powder material container (5).

8. The powder feeding device as described in claim 7, characterized in that, The mold chuck (3021) includes two clamping plates I (30211) that can move closer together or further apart, and an arc-shaped groove (30212) disposed on opposite sides of the two clamping plates I (30211). The container clamp (3022) includes two clamping plates II (30221) that can be brought closer together or moved further apart, and four clamping rods (30222). Each clamping plate II (30221) has two clamping rods (30222) at its end, and the four clamping rods (30222) are arranged in a rectangular pattern.

9. The powder feeding device as described in claim 8, characterized in that, The clamping plate I (30211) and the clamping plate II (30221) move synchronously; The distance between the two clamping plates I (30211) is always greater than the distance between the two clamping plates II (30221).

10. The powder feeding device as described in claim 6, characterized in that, It also includes a mold placement platform (7) for placing the mold (4), a powder material container placement platform (6) for placing the powder material container (5), and a powder material container placement transfer platform (8), wherein the powder material container placement transfer platform (8) is disposed on the side of the powder pouring mechanism (2); The robotic arm (3) is used to transfer the mold (4) between the mold placement platform (7) and the placement platform (102), and also to transfer the powder material container (5) between the powder material container placement platform (6), the powder material container placement transfer platform (8) and the chuck (202).

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