A multi-station dry powder press

Abstract

The utility model discloses a kind of multi-station dry powder presses, it is related to dry powder press technical field, including platform, the left end fixedly connected with hydraulic cylinder in the top of platform, and the telescopic end fixedly connected with material box of hydraulic cylinder, the bottom of material box is equipped with multiple equidistant distribution's discharge cavity.The utility model is equipped with unique material equalizing mechanism, eccentric shaft, connecting block and transmission shaft are driven using motor, and under the cooperation of gear, tooth ring and round plate make the rotation shaft that is equipped with specific shape uniform distribution scraping rod simultaneously produce revolution and rotation compound motion, this motion track is designed, can make the motion path of uniform distribution scraping rod end cover the entire area of square cavity, especially four corners, to effectively break the "bridge" formed by powder in corner, so that powder is extremely uniform in the distribution in cavity, ensure the density consistency of each part of compaction, significantly improve the overall strength and forming quality of compaction, effectively avoid the phenomenon of missing angle when demoulding.

Description

Technical Field

[0001] This utility model relates to the field of dry powder press technology, specifically a multi-station dry powder press. Background Technology

[0002] Dry powder presses are a type of equipment used to press various powders, granules, waste materials, and slags, such as coal powder, iron powder, coking coal, aluminum powder, iron filings, iron oxide scale, carbon powder, charcoal powder, slag, gypsum, tailings, sludge, kaolin, activated carbon, and coke dust. They are widely used in industries such as refractory materials, power plants, metallurgy, chemicals, energy, transportation, and heating. However, existing dry powder presses suffer from "bridging effect" and "dead corner effect" problems during powder filling for cubes or any cavity with sharp inner corners. Powder particles, especially fine powders with poor flowability or powders that are prone to static electricity, will form arches due to the friction and cohesion between particles when flowing into corners, resulting in the corner areas not being fully filled. Traditional vibration filling or scraper filling is effective for shallow cavities or simple shapes, but its effect is limited for deep cavities or right-angled corners, often resulting in low density and poor strength at the four corners of the pressed blank, and even corner defects during demolding. To address this, we propose a multi-station dry powder press. Utility Model Content

[0003] The purpose of this invention is to provide a multi-station dry powder press to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-station dry powder press, comprising a platform, a hydraulic cylinder fixedly connected to the left end of the top of the platform, and a material box fixedly connected to the telescopic end of the hydraulic cylinder, the bottom of the material box having multiple equidistantly distributed discharge chambers, each discharge chamber having an equalizing mechanism on its inner side, the equalizing mechanism comprising a housing, and a motor fixedly connected to the middle of the top of the housing, the output shaft of the motor fixedly connected to an eccentric shaft, and a connecting block fixedly connected to the bottom of the eccentric shaft, the bottom of the connecting block being eccentrically fixedly connected to a transmission shaft, a rotating shaft sleeved on the lower end of the outer surface of the transmission shaft, and three evenly distributed scrapers at equal angles fixedly connected to the bottom of the rotating shaft, a gear fixedly connected to the upper end of the outer surface of the rotating shaft, a gear ring meshing with the outer side of the gear, and a circular plate fixedly connected to the top of the gear ring, the circular plate being rotatably connected to the outer surface of the eccentric shaft.

[0005] Preferably, the platform is fixedly connected to support legs on all four sides of its bottom, and the bottom of each support leg is fixedly connected to a base.

[0006] Preferably, a discharge pipe is provided on the left side of the discharge chamber, the end of the discharge pipe is connected to the inner cavity of the material box, and a feed inlet is provided on the left end of the top of the material box.

[0007] Preferably, a reserved groove is provided at the middle of the bottom of the housing, a limiting plate is fixedly connected to the middle of the outer surface of the rotating shaft, and the lower surface of the limiting plate is attached to the lower surface of the inner cavity of the housing.

[0008] Preferably, guide rods are fixedly connected to both ends of the top of the circular plate, and annular grooves are symmetrically opened at the top of the inner cavity of the housing, with the two guide rods slidably connected to the inner sides of the two annular grooves respectively.

[0009] Preferably, both the drive shaft and the eccentric shaft are eccentrically fixed, and the eccentric directions of the drive shaft and the eccentric shaft are opposite.

[0010] Preferably, the outer ends of the three evenly distributed scrapers are all designed with a curved structure, and the outer surface of the curved part conforms to the outer contour trajectory of the Leylow triangle.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a unique material distribution mechanism that utilizes a motor to drive an eccentric shaft, connecting block, and transmission shaft. With the cooperation of gears, a gear ring, and a circular plate, the rotating shaft, equipped with a specially shaped uniformly distributed scraper, simultaneously undergoes a composite motion of revolution and rotation. This motion trajectory is designed to ensure that the movement path of the scraper tip covers the entire area of ​​the square cavity, especially the four corners. This effectively breaks up the "bridging" formed by powder at the corners, resulting in extremely uniform powder distribution within the cavity. This ensures consistent density across all parts of the pressed blank, significantly improving the overall strength and molding quality of the pressed blank, and effectively preventing corner defects during demolding.

[0012] With a multi-station design, multiple discharge cavities are opened at the bottom of the material box and multiple material equalization mechanisms are set accordingly, which can realize efficient and uniform filling of multiple cavities at the same time, greatly improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-person perspective. Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective. Figure 3 This is a diagram showing the distribution of the discharge chamber of this utility model; Figure 4 This is one of the cross-sectional views of the material distribution mechanism of this utility model; Figure 5 This is the second cross-sectional view of the material equalization mechanism of this utility model.

[0014] In the diagram: Platform 1, Base 2, Material Box 3, Feed Inlet 4, Material Distribution Mechanism 5, Limiting Plate 51, Motor 52, Circular Plate 53, Distributing Scraper 54, Housing 55, Gear Ring 56, Guide Rod 57, Annular Groove 58, Connecting Block 59, Gear 510, Rotating Shaft 511, Transmission Shaft 512, Eccentric Shaft 513, Support Leg 6, Hydraulic Cylinder 7, Discharge Chamber 8, Discharge Pipe 9. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-5 A multi-station dry powder press includes a platform 1. A hydraulic cylinder 7 is fixedly connected to the left end of the top of the platform 1, and a material box 3 is fixedly connected to the telescopic end of the hydraulic cylinder 7. The bottom of the material box 3 has multiple equidistantly distributed discharge chambers 8. Each discharge chamber 8 has a material equalization mechanism 5 inside. The material equalization mechanism 5 includes a housing 55, and a motor 52 is fixedly connected to the middle of the top of the housing 55. The output shaft of the motor 52 is fixedly connected to an eccentric shaft 513, and the bottom of the eccentric shaft 513 is fixedly connected to... A connecting block 59 is fixedly connected, and a drive shaft 512 is eccentrically fixedly connected to the bottom of the connecting block 59. A rotating shaft 511 is sleeved on the lower end of the outer surface of the drive shaft 512, and three evenly distributed scraper rods 54 are fixedly connected to the bottom of the rotating shaft 511. A gear 510 is fixedly connected to the upper end of the outer surface of the rotating shaft 511. A gear ring 56 is meshed on the outer side of the gear 510, and a circular plate 53 is fixedly connected to the top of the gear ring 56. The circular plate 53 is rotatably connected to the outer surface of the eccentric shaft 513.

[0017] The hydraulic cylinder 7 can move the material box 3 left and right.

[0018] A mold is mounted on the right side of the top of platform 1. The mold has multiple cavities, and this application uses 2 x 2 cavities, totaling 4. A pressing mechanism is mounted on the right end of the top of platform 1, corresponding to the position of the cavity. The pressing mechanism includes an electric push rod. The telescopic end of the electric push rod is fixedly connected to the upper mold. The bottom of the upper mold is fixedly connected to a pressure head. The number of pressure heads corresponds to the number of cavities. An ejection mechanism is mounted on the right end of the top of base 2, corresponding to the position of the bottom of the upper mold. The ejection mechanism includes a cylinder. The telescopic end of the electric push rod is fixedly connected to an ejection plate. The top of the ejection plate is fixedly connected to an ejection rod. The ejection rod is slidably connected to the inside of the cavity. A product collection frame is placed on the right side of platform 1.

[0019] The distribution and quantity of structures such as the cavity, material distribution mechanism 5, pressure head, and ejector rod can be adjusted according to actual production needs.

[0020] The platform 1 has legs 6 fixedly connected to all four sides of its bottom, and the bottom of the legs 6 is fixedly connected to a base 2.

[0021] A discharge pipe 9 is provided on the left side of the discharge chamber 8. The end of the discharge pipe 9 is connected to the inner cavity of the material box 3, and a feed inlet 4 is provided on the left side of the top of the material box 3.

[0022] The material bin 3 is equipped with a metering structure. The output end of the metering structure is connected to the inlet of the discharge pipe 9, which ensures that the amount of dry powder discharged each time is the same and can fill the cavity. The material bin 3 is also equipped with drying and stirring equipment to prevent the dry powder from getting wet and clumping, and to ensure the normal operation of each discharge.

[0023] A pre-reserved groove is provided at the middle of the bottom of the housing 55, and a limiting plate 51 is fixedly connected to the middle of the outer surface of the rotating shaft 511, and the lower surface of the limiting plate 51 is attached to the lower surface of the inner cavity of the housing 55.

[0024] The reserved slot allows the rotating shaft 511 to complete the revolution. The limiting plate 51 provides auxiliary limiting for the gear 510, ensuring the stability of the meshing between the gear 510 and the gear ring 56. At the same time, it can also ensure that the lower surface of the evenly distributed scraper 54 is in contact with the upper surface of the platform 1.

[0025] Guide rods 57 are fixedly connected to both ends of the top of the circular plate 53. Annular grooves 58 are symmetrically opened at the top of the inner cavity of the housing 55, and the two guide rods 57 are slidably connected to the inner sides of the two annular grooves 58 respectively.

[0026] The outer ends of the three evenly distributed scraper bars 54 are all designed with a curved structure, and the outer surface of the curved part conforms to the outer contour trajectory of the Leylow triangle.

[0027] The control motor 52 drives the eccentric shaft 513 to rotate. The circular plate 53 revolves with the cooperation of the guide rod 57 and the annular groove 58, and drives the gear ring 56 to rotate synchronously. When the eccentric shaft 513 rotates, it drives the transmission shaft 512 to rotate through the connecting block 59. The transmission shaft 512 rotates eccentrically relative to the output shaft of the motor 52, and drives the gear 510 to rotate with the cooperation of the rotating shaft 511. The gear 510 is always meshed with the gear ring 56 during the rotation. Therefore, without the gear ring 56 rotating on its own axis, the gear 510 will rotate along the teeth in the gear ring 56. Thus, the gear 510 will simultaneously perform both revolution and rotation, so that the three evenly distributed scraper rods 54 that conform to the Reilly triangle trajectory form a square trajectory under the dual rotation, realizing the uniform distribution of dry powder in the square groove-shaped cavity, and can evenly coat the dry powder at the four corners of the square groove-shaped cavity.

[0028] Both the drive shaft 512 and the eccentric shaft 513 are eccentrically fixed, and the eccentric directions of the drive shaft 512 and the eccentric shaft 513 are opposite.

[0029] The eccentricity of the eccentric shaft 513 and the drive shaft 512, as well as the dimensions of the toothed ring 56, the gear 510 and the uniformly distributed scraper 54, need to be designed to achieve a square trajectory and uniform distribution of dry powder in the square groove.

[0030] The working principle of this application is as follows: First, dry powder is added into the cavity through the discharge pipe 9. At the same time or afterward, the dry powder in the cavity is uniformly processed by the material equalization mechanism 5. Finally, the hydraulic cylinder 7 is reset and the pressing mechanism is moved down to achieve the pressing of the dry powder. After the pressing is completed, the ejection mechanism ejects the product. The hydraulic cylinder 7 controls the feeding device to move to the right to add dry powder again. During the movement of the feeding device, the ejected product will be pushed into the product collection box. The specific method of material uniform processing is as follows: the motor 52 is controlled to run, which can drive the eccentric shaft 513 to rotate. The circular plate 53 revolves under the cooperation of the guide rod 57 and the annular groove 58, and drives the gear ring 56 to rotate synchronously. When the eccentric shaft 513 rotates, it will drive the transmission shaft 512 to rotate through the connecting block 59. The transmission shaft 512 rotates eccentrically relative to the output shaft of the motor 52, and can drive the gear 510 to rotate under the cooperation of the rotating shaft 511. The gear 510 always meshes with the gear ring 56 during the rotation process. Therefore, under the premise that the gear ring 56 does not rotate on its own axis, the gear 510 will rotate along the teeth in the gear ring 56. Thus, the gear 510 will simultaneously perform both revolution and rotation, so that the three uniformly distributed scrapers 54 conforming to the Reilly triangle trajectory form a square trajectory under the dual rotation, realizing the uniform distribution of dry powder in the square groove-shaped cavity, and can evenly coat the dry powder at the four corners of the square groove-shaped cavity.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station dry powder press, comprising a platform (1), characterized in that: A hydraulic cylinder (7) is fixedly connected to the left end of the top of the platform (1), and a material box (3) is fixedly connected to the telescopic end of the hydraulic cylinder (7). The bottom of the material box (3) is provided with multiple equidistant discharge chambers (8). Each discharge chamber (8) is provided with a material equalization mechanism (5) on its inner side. The material equalization mechanism (5) includes a housing (55), and a motor (52) is fixedly connected to the middle of the top of the housing (55). The output shaft of the motor (52) is fixedly connected to an eccentric shaft (513), and a connecting block is fixedly connected to the bottom of the eccentric shaft (513). 59), the bottom of the connecting block (59) is eccentrically fixedly connected to a drive shaft (512), the lower end of the outer surface of the drive shaft (512) is sleeved with a rotating shaft (511), and the bottom of the rotating shaft (511) is fixedly connected to three evenly distributed scraper rods (54) at equal angles. The upper end of the outer surface of the rotating shaft (511) is fixedly connected to a gear (510), the outer side of the gear (510) is meshed with a gear ring (56), and the top of the gear ring (56) is fixedly connected to a circular plate (53). The circular plate (53) is rotatably connected to the outer surface of the eccentric shaft (513).

2. The multi-station dry powder press according to claim 1, characterized in that: The platform (1) has legs (6) fixedly connected to all four sides of its bottom, and the bottom of the legs (6) is fixedly connected to a base (2).

3. The multi-station dry powder press according to claim 1, characterized in that: A discharge pipe (9) is provided on the left side of the discharge chamber (8). The end of the discharge pipe (9) is connected to the inner cavity of the material box (3), and a feed inlet (4) is provided on the left side of the top of the material box (3).

4. A multi-station dry powder press according to claim 1, characterized in that: A reserved groove is provided at the middle of the bottom of the housing (55), and a limiting plate (51) is fixedly connected to the middle of the outer surface of the rotating shaft (511), and the lower surface of the limiting plate (51) is attached to the lower surface of the inner cavity of the housing (55).

5. A multi-station dry powder press according to claim 4, characterized in that: Guide rods (57) are fixedly connected to both ends of the top of the circular plate (53). Annular grooves (58) are symmetrically opened on the top of the inner cavity of the housing (55), and the two guide rods (57) are slidably connected to the inner sides of the two annular grooves (58).

6. A multi-station dry powder press according to claim 1, characterized in that: Both the drive shaft (512) and the eccentric shaft (513) are eccentrically fixed, and the eccentric directions of the drive shaft (512) and the eccentric shaft (513) are opposite.

7. A multi-station dry powder press according to claim 1, characterized in that: The outer ends of the three uniformly distributed scrapers (54) are all designed with a curved structure, and the outer surface of the curved part conforms to the outer contour trajectory of the Leroy triangle.

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