Powder feeding mechanism with powder pushing and stirring functions

Abstract

The utility model discloses a powder feeding mechanism with powder pushing and stirring functions, which comprises a material box, a material box driving device, a connecting frame, a powder pushing shaft, a stirring shaft, a powder stirring driving device and a material clamping device, the two ends of the powder pushing shaft and the two ends of the stirring shaft are rotationally arranged on the two inner side walls of the material box respectively and are sequentially arranged side by side in the powder feeding direction, a plurality of powder pushing blades stretching out in the length direction of the powder pushing shaft surround the powder pushing shaft at intervals, and a plurality of stirring teeth are evenly arranged on the outer wall of the stirring shaft. The powder stirring driving device can drive the stirring shaft and the powder pushing shaft to rotate synchronously, and the material clamping device is installed at the front end of the material box through two adapting pieces. The powder pushing shaft and the stirring shaft are jointly driven by the stirring driving device, synchronous pushing and stirring can be achieved after powder is discharged, the phenomena of caking and the like in a material box during powder filling are avoided, it is ensured that the powder smoothly falls into a cavity hole and is fully filled, and the powder filling efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of powder feeding device technology, and more specifically, to a powder feeding mechanism with powder pushing and stirring functions. Background Technology

[0002] Powder molding presses are devices that use metal powder (or a mixture of metal and non-metal powders) as raw material to process products into specific shapes. The process generally includes three steps: mixing, pressing, and sintering. The mold of the powder molding equipment typically has multiple arrayed cavities. After mixing, the uniformly mixed powder is filled into the cavities of the mold before pressing. Currently, existing powder feeding mechanisms generally pour the conveyed powder directly onto the mold. However, due to the poor flowability of the powder and the slow filling speed, uneven and uneven discharge during filling can easily occur, affecting the fullness of the filling and thus reducing the precision and quality of the finished product.

[0003] For example, the powder feeding mechanism disclosed in the authorization announcement number CN113752360A is easy to disassemble and install. It includes a powder box, a connecting frame and a powder box driving device. The powder box driving device can make the inverted powder box move forward or backward on the top surface of the master mold, so as to directly fill the powder into the forming cavity of the lower forming master mold. In this powder filling method, the powder is prone to accumulate in the powder box, which can easily cause clumping and other phenomena, resulting in uneven, unsmooth, and incomplete powder filling. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a powder feeding mechanism with pushing and stirring functions, which can push and stir the powder so that it falls smoothly into the cavity and fills it completely, and can also ensure the stability and accuracy of filling even for powder with poor flowability.

[0005] To achieve the above objectives, this utility model provides a powder feeding mechanism with powder pushing and stirring functions, including a material box, a material box driving device, a connecting frame, a powder pushing shaft, a stirring shaft, a powder stirring driving device, and a clamping device for clamping and pressing finished products. The material box lugs on both sides of the material box are connected to the material box driving device through the connecting frame. The powder pushing shaft and the stirring shaft are both installed in the inner cavity of the material box. The two ends of the powder pushing shaft and the stirring shaft are rotatably set on the two inner side walls of the material box and arranged in parallel along the powder feeding direction. The powder pushing shaft has several powder pushing blades that extend along its length at intervals. The outer wall of the stirring shaft has several stirring teeth evenly arranged. The powder stirring driving device is installed on the connecting frame and is connected to one end of the powder pushing shaft. One end of the stirring shaft is connected to the other end of the powder pushing shaft through a transmission component. The powder stirring driving device can drive the stirring shaft and the powder pushing shaft to rotate synchronously. The clamping device is installed at the front end of the material box through two adapter pieces. The material box driving device can drive the material box and the clamping device to move forward or backward.

[0006] Preferably, the clamping device includes two clamping drive motors, two clamping plates, and several guide rods and positioning rods. The front ends of the two adapter plates are bent relative to each other to form an inverted L-shaped structure. The two clamping drive motors are respectively arranged opposite to each other on the two outer sides of the front ends of the two adapter plates, and their output shafts pass through the adapter plates and are connected to the back of their respective clamping plates for transmission. The front of the two clamping plates is respectively provided with concave grooves that are consistent with the shape of the product. The guide rods and positioning rods pass through the front ends of the adapter plates and are fixedly connected to the back of the two plates.

[0007] Preferably, the powder stirring drive device includes a powder stirring drive motor, a motor mounting plate, a first driving wheel, a first driven wheel, and a first synchronous belt. The powder stirring drive motor is fixedly mounted on the lower middle part of the connecting frame via the motor mounting plate. The first driving wheel is drivenly connected to the output shaft of the powder stirring drive motor. The two ends of the powder pushing shaft are rotatably connected to the two inner side walls of the material box via rotating bearings embedded in the material box ear buckle. The first driven wheel is fixedly sleeved on one end of the powder pushing shaft that extends out of the material box ear buckle. The first synchronous belt is sleeved on the first driving wheel and the first driven wheel. The powder stirring drive motor can drive the first driving wheel to rotate and drive the powder pushing shaft to rotate via the first synchronous belt.

[0008] Preferably, the transmission assembly includes a second driven wheel, a third driven wheel, and a second synchronous belt. The two ends of the stirring shaft are rotatably connected to the inner wall of the material box through rotating bearings embedded in the two inner side walls of the material box. The third driven wheel is fixedly sleeved on the other end of the powder pushing shaft that extends out of the material box ear. The second driven wheel is fixedly sleeved on one end of the stirring shaft that extends out of the material box. The second synchronous belt is sleeved on the second driven wheel and the third driven wheel.

[0009] Preferably, the material box driving device includes a material box driving motor, a material box swing arm, a hinge seat, and a rotating connector. The lower end of the material box swing arm is connected to the material box driving motor, and the upper end of the material box swing arm is hinged to the hinge seat. The hinge seat is connected to the top of the downwardly inclined connecting frame through the rotating connector.

[0010] Preferably, the connecting frame includes a connecting crossbar, a first connecting arm, and a second connecting arm. The connecting crossbar is horizontally arranged at the front end of the rotating connector. The first connecting arm and the second connecting arm are respectively connected in parallel to both sides of the connecting crossbar. The front ends of the first connecting arm and the second connecting arm are respectively provided with slots for rotatably connecting with the material box ear buckle.

[0011] Preferably, the rotating connector includes a rotating connecting screw and two semi-circular clamps. One end of the rotating connecting screw has an external thread end, which is threaded to the internal thread hole of the hinge seat. The other end of the rotating connecting screw has a limiting end. Between the external thread end and the limiting end, there is a cylindrical rotating shaft and a clamp mounting part. The rotating connecting screw passes through a circular hole in the middle of the hinge seat. The rotating shaft is rotatably connected to the inner wall of the circular hole. The top surface of the limiting end abuts against the bottom surface of the hinge seat. The two semi-circular clamps are locked and fixed to the clamp mounting part.

[0012] Preferably, the powder inlet of the powder box is equipped with a powder inlet pipe that communicates with the inner cavity of the powder box.

[0013] Preferably, the material box driving device further includes a pressing device, which includes two material box pressing cylinders and two cylinder hinges. The output rod heads of the two material box pressing cylinders are rotatably connected to cylinder pins passing through the two outer sides of the middle of the connecting frame via cylinder pressure blocks. The two cylinder hinges are rotatably mounted on the top of the two material box pressing cylinders.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model has a novel structure and reasonable design. Inside the material box, the powder pushing shaft and the stirring shaft are arranged in parallel along the powder feeding direction and are driven by the stirring drive device. This enables synchronous pushing and stirring after the powder is fed, maintaining the fluidity of the powder and avoiding blockage or clumping in the material box during filling. This allows the powder to fall smoothly into the cavity and be fully filled. The powder feeding is stable, fast, and efficient. Even for powders with poor fluidity, it can ensure the stability and accuracy of filling, significantly improving filling efficiency and ensuring the accuracy and quality of subsequent product molding.

[0016] 2. The material box driving device of this utility model can drive the material box to feed powder while also driving the clamping device to move forward. The clamping device can clamp and remove the previously pressed products, thus improving the continuity of operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view structural diagram provided in an embodiment of the present utility model;

[0019] Figure 2 This is a bottom view structural diagram provided in an embodiment of the present utility model;

[0020] Figure 3 This is an enlarged schematic diagram of the interior of the material box provided in this embodiment of the utility model;

[0021] Figure 4 This is an enlarged schematic diagram of the clamping device provided in an embodiment of the present invention;

[0022] Figure 5 This is a partial exploded view of the structure provided in an embodiment of this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Please refer to Figure 1 The present invention provides a powder feeding mechanism with powder pushing and stirring functions, including a material box 1, a material box driving device 2, a connecting frame 3, a powder pushing shaft 4, a stirring shaft 5, a powder stirring driving device 6, a clamping device 7 for clamping and pressing finished products, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2As shown, the ear clips 11 on both sides of the material box 1 can be connected to the material box drive device 2 through the connecting frame 3. The powder pushing shaft 4 and the stirring shaft 5 are both installed in the inner cavity of the material box 1. The two ends of the powder pushing shaft 4 and the stirring shaft 5 are respectively rotatably set on the two inner side walls of the material box 1 and arranged in parallel along the powder feeding direction. The powder pushing shaft 4 is surrounded by several powder pushing blades 41 that extend along its length direction at intervals. Several stirring teeth 51 are evenly arranged on the outer wall of the stirring shaft 5. The powder stirring drive device 6 is installed on the connecting frame 3. The powder stirring drive device 6 is connected to one end of the powder pushing shaft 4 through a transmission component. One end of the stirring shaft 5 is connected to the other end of the powder pushing shaft 4 through a transmission component.

[0026] In practice, the powder stirring drive device 6 can drive the stirring shaft 5 and the powder pushing shaft 4 to rotate synchronously. The clamping device 7 is installed at the front end of the material box 1 through two adapter plates 71. The material box drive device 2 can drive the material box 1 to move forward or backward against the top of the slide plate of the mother mold and drive the clamping device 7 to move forward or backward synchronously.

[0027] The powder pushing shaft 4 and the stirring shaft 5 are driven synchronously by the powder stirring drive device 6. They do not extend out of the bottom of the material box 1 when rotating. The powder pushing blades 41 of the powder pushing shaft 4 push the powder evenly towards the stirring shaft 5 and the cavity hole through rotation. The stirring teeth 51 of the stirring shaft 5 can stir the powder during the powder filling process, prevent agglomeration, and improve the powder flowability. The coordinated work of the powder pushing shaft 4 and the stirring shaft 5 ensures that the powder maintains flowability and uniformity during the powder filling process, significantly improving the powder filling speed and effect.

[0028] To ensure a continuous supply of powder, a powder inlet pipe 13 can be installed at the powder inlet of the powder box 1, which connects to the inner cavity of the powder box 1. The powder inlet pipe 13 can be connected to the powder feeding hopper of the powder forming press through a powder feeding pipe.

[0029] like Figure 3 As shown, the powder stirring drive device 6 may include a powder stirring drive motor 61, a motor mounting plate 62, a first driving wheel 63, a first driven wheel 64, and a first synchronous belt 65. The powder stirring drive motor 61 is fixedly mounted on the lower middle part of the connecting frame 3 through the motor mounting plate 62. The first driving wheel 63 is connected to the output shaft of the powder stirring drive motor 61. The two ends of the powder pushing shaft 4 are rotatably connected to the two inner side walls of the material box 1 through the rotating bearings 12 embedded in the material box ear buckle 11. The first driven wheel 64 is fixedly sleeved on one end of the powder pushing shaft 4 that extends out of the material box ear buckle 11. The first synchronous belt 65 is sleeved on the first driving wheel 63 and the first driven wheel 64. The powder stirring drive motor 61 can drive the first driving wheel 63 to rotate and drive the powder pushing shaft 4 to rotate through the first synchronous belt 65.

[0030] The transmission assembly may include a second driven wheel 66, a third driven wheel 67, and a second synchronous belt 68. The two ends of the stirring shaft 5 are rotatably connected to the inner wall of the material box 1 through rotating bearings 12 embedded in the two inner side walls of the material box 1. The third driven wheel 67 is fixedly sleeved on the other end of the powder pushing shaft 4 that extends out of the material box ear buckle 11. The second driven wheel 66 is fixedly sleeved on one end of the stirring shaft 5 that extends out of the material box 1. The second synchronous belt 68 is sleeved on the second driven wheel 66 and the third driven wheel 67.

[0031] like Figure 4 As shown, the clamping device 7 may include two clamping drive motors 72, two clamping plates 73, and several guide rods and positioning rods 74. The front ends of the two adapter plates 71 are bent relative to each other to form an inverted L-shaped structure. The two clamping drive motors 72 are respectively arranged opposite to each other on the two outer sides of the front ends of the two adapter plates 71, and their output shafts pass through the adapter plates 71 and are connected to the back of their respective clamping plates 73. The front of the two clamping plates 73 is respectively provided with concave grooves 731 that are consistent with the shape of the product. The guide rods and positioning rods 74 pass through the front ends of the adapter plates 71 and are fixedly connected to the back of the two plates.

[0032] In practice, the clamping drive motor 72 can drive the clamping plates 73 to open and close respectively. The guide rod positioning rod 74 provides stable support for the clamping plates 73, preventing the clamping plates 73 from shifting and ensuring their accurate positioning during the clamping action.

[0033] Preferably, the material box driving device 2 may include a material box driving motor 21, a material box swing arm 22, a hinge seat 23 and a rotating connector 24. The lower end of the material box swing arm 22 is connected to the material box driving motor 21 for transmission, and the upper end of the material box swing arm 22 is hinged to the hinge seat 23. The hinge seat 23 is connected to the top of the downwardly inclined connecting frame 3 through the rotating connector 24.

[0034] Specifically, the connecting frame 3 includes a connecting crossbar 31, a first connecting arm 32 and a second connecting arm 33. The connecting crossbar 31 is horizontally arranged at the front end of the rotating connector 24. The first connecting arm 32 and the second connecting arm 33 are respectively connected in parallel to both sides of the connecting crossbar 31. The front ends of the first connecting arm 32 and the second connecting arm 33 are respectively provided with slots 34 that are rotatably connected to the material box ear buckle 11.

[0035] Furthermore, the rotating connector 24 includes a rotating connecting screw 241 and two semi-circular clamps 243. One end of the rotating connecting screw 241 has an external thread, which is threaded into the internal thread hole of the hinge seat 23. The other end of the rotating connecting screw 241 has a limiting end 242. Between the external thread and the limiting end 242, there is a cylindrical rotating shaft and a clamp mounting part. The rotating connecting screw 241 passes through a circular hole 311 in the middle of the connecting crossbar 31. The rotating shaft is rotatably connected to the inner wall of the circular hole 311. The top surface of the limiting end 242 abuts against the bottom surface of the connecting crossbar 31. The two semi-circular clamps 243 are locked and fixed in place by the clamp mounting part. The rotating connector 24 facilitates the flexible adjustment of the connecting frame 3.

[0036] Preferably, the material box drive device 2 may also include a pressing device, which includes two material box pressing cylinders 25 and two cylinder hinges 26. The output rod heads of the two material box pressing cylinders 25 are rotatably connected to the cylinder pins 28 passing through the middle outer sides of the connecting frame 3 via cylinder pressure blocks 27. The two cylinder hinges 26 are rotatably disposed at the top of the two material box pressing cylinders 25.

[0037] The pressing device ensures that the material box 1 can move smoothly and closely against the slide plate of the powder forming press, avoiding powder leakage from the material box 1 and making the operation more stable and reliable.

[0038] To facilitate the overall installation of the powder feeding mechanism, the material box drive device 2 may also include a mounting plate 29 and a motor connecting plate 211 for connecting to the main body of the powder forming press. The mounting plate 29 is vertically connected to one side of the material box drive motor 21 via the motor connecting plate 211.

[0039] It should be noted that the powder feeding mechanism with powder pushing and stirring functions in this embodiment can be used with conventional powder forming presses on the market and is compatible with most models. This embodiment does not limit the structure of the powder forming press, so it will not be described in detail here.

[0040] In summary, the powder pushing shaft and stirring shaft of this utility model are set in the material box and are both driven by the stirring drive device. They can achieve synchronous pushing and stirring after the powder is fed, maintain the fluidity of the powder, and avoid the phenomenon of clogging or clumping in the material box when filling the powder. This allows the powder to fall smoothly into the cavity and be fully filled, resulting in high powder filling efficiency.

[0041] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A powder feeding mechanism with powder pushing and stirring functions, characterized in that: The device includes a material box (1), a material box drive device (2), a connecting frame (3), a powder pushing shaft (4), a stirring shaft (5), a powder stirring drive device (6), and a clamping device (7) for clamping and pressing finished products. The material box lugs (11) on both sides of the material box (1) are connected to the material box drive device (2) through the connecting frame (3). The powder pushing shaft (4) and the stirring shaft (5) are both installed in the inner cavity of the material box (1). The two ends of the powder pushing shaft (4) and the stirring shaft (5) are respectively rotatably set on the two inner side walls of the material box (1) and arranged in parallel along the powder feeding direction. The powder pushing shaft (4) is surrounded by several pieces of pushers that extend along its length. The powder blade (41) has several stirring teeth (51) evenly arranged on the outer wall of the stirring shaft (5). The powder stirring drive device (6) is installed on the connecting frame (3). The powder stirring drive device (6) is connected to one end of the powder pushing shaft (4). One end of the stirring shaft (5) is connected to the other end of the powder pushing shaft (4) through the transmission assembly. The powder stirring drive device (6) can drive the stirring shaft (5) and the powder pushing shaft (4) to rotate synchronously. The clamping device (7) is installed at the front end of the material box (1) through two adapter plates (71). The material box drive device (2) can drive the material box (1) and the clamping device (7) to move forward or backward.

2. The powder feeding mechanism with powder pushing and stirring functions according to claim 1, characterized in that: The clamping device (7) includes two clamping drive motors (72), two clamping plates (73), and several guide rods and positioning rods (74). The front ends of the two adapter plates (71) are bent relative to each other to form an inverted L-shaped structure. The two clamping drive motors (72) are respectively arranged on the two outer sides of the front ends of the two adapter plates (71) and their output shafts pass through the adapter plates (71) and are connected to the back of their respective clamping plates (73) for transmission. The front of the two clamping plates (73) is respectively provided with concave grooves (731) that are consistent with the shape of the product. The guide rods and positioning rods (74) pass through the front ends of the adapter plates (71) and are fixedly connected to the back of the two plates.

3. The powder feeding mechanism with powder pushing and stirring functions according to claim 1, characterized in that: The powder stirring drive device (6) includes a powder stirring drive motor (61), a motor mounting plate (62), a first drive wheel (63), a first driven wheel (64), and a first synchronous belt (65). The powder stirring drive motor (61) is fixedly mounted on the lower middle part of the connecting frame (3) through the motor mounting plate (62). The first drive wheel (63) is connected to the output shaft of the powder stirring drive motor (61) for transmission. The two ends of the powder pushing shaft (4) are rotatably connected to the two inner side walls of the material box (1) through the rotating bearings (12) embedded in the material box ear buckle (11). The first driven wheel (64) is fixedly sleeved on one end of the powder pushing shaft (4) that extends out of the material box ear buckle (11). The first synchronous belt (65) is sleeved on the first drive wheel (63) and the first driven wheel (64). The powder stirring drive motor (61) can drive the first drive wheel (63) to rotate and drive the powder pushing shaft (4) to rotate through the first synchronous belt (65).

4. The powder feeding mechanism with powder pushing and stirring functions according to claim 1, characterized in that: The transmission assembly includes a second driven wheel (66), a third driven wheel (67), and a second synchronous belt (68). The two ends of the stirring shaft (5) are rotatably connected to the inner wall of the material box (1) through rotating bearings (12) embedded in the two inner side walls of the material box (1). The third driven wheel (67) is fixedly sleeved on the other end of the powder pushing shaft (4) that extends out of the material box ear buckle (11). The second driven wheel (66) is fixedly sleeved on one end of the stirring shaft (5) that extends out of the material box (1). The second synchronous belt (68) is sleeved on the second driven wheel (66) and the third driven wheel (67).

5. The powder feeding mechanism with powder pushing and stirring functions according to claim 1, characterized in that: The material box driving device (2) includes a material box driving motor (21), a material box swing arm (22), a hinge seat (23), and a rotating connector (24). The lower end of the material box swing arm (22) is connected to the material box driving motor (21) for transmission, and the upper end of the material box swing arm (22) is hinged to the hinge seat (23). The hinge seat (23) is connected to the top of the downwardly inclined connecting frame (3) through the rotating connector (24).

6. The powder feeding mechanism with powder pushing and stirring functions according to claim 5, characterized in that: The connecting frame (3) includes a connecting crossbar (31), a first connecting arm (32) and a second connecting arm (33). The connecting crossbar (31) is horizontally arranged at the front end of the rotating connector (24). The first connecting arm (32) and the second connecting arm (33) are respectively connected in parallel to both sides of the connecting crossbar (31). The front ends of the first connecting arm (32) and the second connecting arm (33) are respectively provided with slots (34) that are rotatably connected to the material box ear buckle (11).

7. A powder feeding mechanism with powder pushing and stirring functions according to claim 6, characterized in that: The rotating connector (24) includes a rotating connecting screw (241) and two semi-circular clamps (243). One end of the rotating connecting screw (241) is provided with an external thread end, which is threaded to the internal thread hole of the hinge seat (23). The other end of the rotating connecting screw (241) is provided with a limiting end (242). A cylindrical rotating shaft and a clamp mounting part are provided between the external thread end and the limiting end (242). The rotating connecting screw (241) passes through a circular hole (311) opened in the middle of the connecting crossbar (31). The rotating shaft is rotatably connected to the inner wall of the circular hole. The top surface of the limiting end (242) abuts against the bottom surface of the connecting crossbar (31). The two semi-circular clamps (243) are clamped and fixed to the clamp mounting part.

8. The powder feeding mechanism with powder pushing and stirring functions according to claim 1, characterized in that: The powder inlet of the powder box (1) is equipped with a powder inlet pipe (13) that communicates with the inner cavity of the powder box (1).

9. A powder feeding mechanism with powder pushing and stirring functions according to claim 1, characterized in that: The material box driving device (2) also includes a pressing device, which includes two material box pressing cylinders (25) and two cylinder hinges (26). The output rod heads of the two material box pressing cylinders (25) are rotatably connected to the cylinder pins (28) passing through the middle of the connecting frame (3) via cylinder pressure blocks (27). The two cylinder hinges (26) are rotatably set at the top of the two material box pressing cylinders (25).

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