Powder mixing device for a powder molding machine

Abstract

The utility model discloses a kind of powder mixing devices for powder forming machine, it is related to powder mixing technical field, the utility model includes including base, the top of base is equipped with two groups of support box, the inboard of support box is connected with mixing cylinder by rotating shaft and rotating pipe respectively, transmission shaft is penetrated in the side of mixing cylinder, and the one end of transmission shaft extends to the inside of a group of support box, the inside of mixing cylinder is fixed with sealing box by fixed rod, the other end of transmission shaft extends to the inside of sealing box and is fixed with second driving bevel gear;The utility model is stirred and mixed by horizontal dispersion and up-down turning double, can avoid that metal powder deposits in tank bottom, can greatly shorten mixing period, significantly improve powder mixing efficiency and uniformity.

Description

Technical Field

[0001] This utility model relates to the field of powder mixing technology, specifically a powder mixing device for a powder forming machine. Background Technology

[0002] Powder metallurgy is a process technology that uses metal powder (or a mixture of metal powder and non-metal powder) as raw materials, and then shapes and sinters to manufacture metal materials, composite materials, and various types of products. Powder metallurgy is similar to ceramics production, as both belong to powder sintering technology. Therefore, a series of new powder metallurgy technologies can also be used in the preparation of ceramic materials. Due to the advantages of powder metallurgy technology, it has become a key to solving new material problems and plays a crucial role in the development of new materials. Mixing devices are required in the manufacturing process.

[0003] In the powder mixing stage of powder metallurgy, existing mixing devices mostly use a single stirring mechanism driven by a stirring motor to achieve the mixing operation. However, due to the significant difference in density between metal powder and non-metal powder, their settling velocities during the mixing process are drastically different. Taking the mixing of common iron powder (density approximately 7.8 g / cm3) and graphite powder (density approximately 2.2 g / cm3) as an example, the settling velocity of iron powder can be more than 3.5 times that of graphite powder. Furthermore, the stirring mechanisms commonly used in existing devices (such as anchor-type and paddle-type stirrers) have simple structures and are prone to insufficient coverage of the three-dimensional flow field, which cannot effectively counteract the settling trend of high-density powder. As a result, the denser metal powder gradually deposits at the bottom of the mixing tank, ultimately leading to uneven mixing of metal powder and non-metal powder. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a powder mixing device for a powder forming machine to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder mixing device for a powder forming machine, comprising a base, two sets of support boxes mounted on the top of the base, a mixing cylinder connected to the inner side of the support boxes via a rotating shaft and a rotating tube respectively, a drive shaft passing through one side of the mixing cylinder, and one end of the drive shaft extending into the interior of one set of support boxes, a sealing box fixed inside the mixing cylinder by a fixing rod, the other end of the drive shaft extending into the interior of the sealing box and fixed with a second active bevel tooth, a stirring shaft passing through the top and bottom of the sealing box, a second driven bevel tooth fixed at one end of the stirring shaft, a stirring blade fixed at the other end of the stirring shaft, a first driven bevel tooth fixed on one side of the outer surface of the drive shaft and the outer surface of the rotating tube, and a drive motor mounted below the interior of one set of support boxes, the output end of the drive motor being connected to the first active bevel tooth; Both sets of support boxes are equipped with striking components inside.

[0006] Furthermore, the striking assembly includes a cylinder and a connecting shaft installed inside the support box. The output end of the cylinder is connected to a rack, and a gear plate is fixed on the outer surface of the connecting shaft. The rack meshes with the gear plate, and a striking ball is fixed on one side of the gear plate via a connecting rod.

[0007] By adopting the above technical solution, the cylinder drives the rack to move up and down, thereby driving the gear plate to rotate regularly in both directions, thus realizing the swinging of the striking ball, which has the effect of shaking off the wall powder and preventing material blockage.

[0008] Furthermore, the striking ball is provided in two sets, and both sets of striking balls are made of rubber material.

[0009] By adopting the above technical solution, the rubber striking ball can ensure the striking and shaking effect while avoiding impact damage to the mixing drum caused by hard contact, thus balancing practicality and equipment protection.

[0010] Furthermore, a control panel is mounted on the outer surface of another set of support boxes, and both the cylinder and the drive motor are electrically connected to the control panel.

[0011] By adopting the above technical solution, staff can control the cylinder and drive motor through the control panel.

[0012] Furthermore, the top of the mixing cylinder is provided with a feed inlet, and the inner side of the feed inlet is threaded with a sealing cap. The cross-sectional view of the feed inlet is in the shape of an inverted "V".

[0013] By adopting the above technical solution, the feed inlet is designed as an inverted "V" shape, which avoids the powder falling during feeding and makes feeding more convenient. At the same time, the sealing cap with the threaded connection on the inside of the feed inlet can achieve sealing during the mixing process.

[0014] Furthermore, the bottom of the mixing cylinder is provided with a discharge port, and the outer surface of the discharge port is provided with a discharge valve.

[0015] By adopting the above technical solution, the discharge port provides a channel for the discharge of powder, and a discharge valve is configured on the outer surface of the discharge port. The discharge speed can be flexibly adjusted by controlling the opening and closing of the discharge valve.

[0016] Furthermore, the first driven bevel teeth are provided in two sets, and the first driving bevel teeth respectively mesh with the two sets of first driven bevel teeth.

[0017] By adopting the above technical solution, when the drive motor drives a set of first active bevel teeth to rotate, the first active bevel teeth can drive two sets of first driven bevel teeth to rotate respectively.

[0018] Furthermore, the second driven bevel teeth are provided in two sets, and the second driving bevel teeth respectively mesh with the two sets of second driven bevel teeth.

[0019] By adopting the above technical solution, when the transmission shaft rotates, it can drive a set of second active bevel teeth to rotate, and the second active bevel teeth can drive two sets of second driven bevel teeth to rotate respectively.

[0020] In summary, the present invention has the following main advantages: 1. This utility model comprises a drive motor, a first active bevel gear, a first driven bevel gear, a second active bevel gear, a second driven bevel gear, a transmission shaft, a stirring shaft, stirring blades, a rotating tube, and a mixing cylinder. During powder mixing, the drive motor rotates, causing the first active bevel gear to rotate. The first active bevel gear drives two sets of first driven bevel gears to rotate. One set of first driven bevel gears drives the transmission shaft to rotate. Through the meshing transmission of the second active bevel gear and the second driven bevel gear, the stirring shaft and stirring blades achieve horizontal stirring, quickly breaking up powder clumps in the cylinder. At the same time, the other set of first driven bevel gears drives the rotating tube and the mixing cylinder to tumble up and down, actively breaking the tendency of metal powder to settle due to its high density, allowing the powder in the cylinder to flow up and down in all directions. Through the dual stirring and mixing of horizontal dispersion and up and down tumbling, metal powder can be prevented from settling at the bottom of the tank, and the mixing cycle can be significantly shortened, significantly improving the powder mixing efficiency and uniformity. 2. This utility model incorporates a striking component. During material feeding, the operator activates a cylinder, which reciprocates up and down, causing the rack to move synchronously up and down, thereby driving the gear disc to rotate regularly in both directions. As the gear disc rotates, it drives the striking ball to swing back and forth via a connecting rod, causing the striking ball to strike the outer wall of the mixing cylinder at a high frequency and continuously. This causes the mixing cylinder to vibrate at a high frequency. This high-frequency vibration can quickly shake off the powder adhering to the inner wall of the mixing cylinder, minimizing powder waste caused by residue on the wall surface. It can also effectively break up powder bridging that may form at the discharge port, preventing material blockage and ultimately ensuring the smoothness of the material feeding process and significantly improving discharge efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the support box of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the mixing cylinder of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the sealing box of this utility model; Figure 5 This is a schematic diagram of the striking component structure of this utility model.

[0022] In the diagram: 1. Base; 2. Support box; 3. Rotating shaft; 4. Mixing cylinder; 5. Rotating tube; 6. Feed inlet; 7. Sealing cover; 8. Discharge port; 9. Discharge valve; 10. Control panel; 11. Stirring blade; 12. Drive motor; 13. First active bevel gear; 14. First driven bevel gear; 15. Transmission shaft; 16. Striking assembly; 1601. Cylinder; 1602. Toothed rod; 1603. Connecting shaft; 1604. Toothed disc; 1605. Connecting rod; 1606. Striking ball; 17. Second driven bevel gear; 18. Fixing rod; 19. Sealing box; 20. Second active bevel gear; 21. Stirring shaft. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] Example 1: A powder mixing device for a powder forming machine, such as... Figures 1-4 As shown, it includes base 1- Figure 4 Two sets of support boxes 2 are installed on the top of the base 1. A mixing cylinder 4 is connected to the inner side of each support box 2 via a rotating shaft 3 and a rotating tube 5, respectively. A drive shaft 15 passes through one side of the mixing cylinder 4, and one end of the drive shaft 15 extends into the interior of one set of support boxes 2. A sealing box 19 is fixed inside the mixing cylinder 4 via a fixing rod 18. The other end of the drive shaft 15 extends into the interior of the sealing box 19 and is fixed with a second active bevel gear 20. A stirring shaft 21 passes through the top and bottom of the sealing box 19, and one end of the stirring shaft 21 is fixed with a second driven bevel gear 17. The second driven bevel teeth 17 are provided in two sets, and the second driving bevel teeth 20 respectively mesh with the two sets of second driven bevel teeth 17. When the transmission shaft 15 rotates, it can drive one set of second driving bevel teeth 20 to rotate. The second driving bevel teeth 20 can drive the two sets of second driven bevel teeth 17 to rotate respectively. The other end of the stirring shaft 21 is fixed with a stirring blade 11. The outer surface of the transmission shaft 15 and the outer surface of the rotating tube 5 are both fixed with first driven bevel teeth 14. A drive motor 12 is installed inside the lower part of a set of support boxes 2. The output end of the drive motor 12 is connected to the first driving bevel teeth 13.

[0026] See Figures 1-3In the above embodiment, the top of the mixing cylinder 4 is provided with a feed port 6, and the inner side of the feed port 6 is threaded with a sealing cap 7. The cross-sectional view of the feed port 6 is an inverted "V" shape. The feed port 6 is designed as an inverted "V" shape to prevent powder from falling during feeding, making feeding more convenient. At the same time, the sealing cap 7 threaded on the inner side of the feed port 6 can achieve sealing during the mixing process.

[0027] See Figures 1-3 In the above embodiment, the bottom of the mixing cylinder 4 is provided with a discharge port 8, and the outer surface of the discharge port 8 is provided with a discharge valve 9. The discharge port 8 provides a channel for the discharge of powder, and the discharge valve 9 is configured on the outer surface of the discharge port 8. The discharge speed can be flexibly adjusted by controlling the opening and closing of the discharge valve 9.

[0028] Example 2: To avoid powder adhesion causing waste and blockage during feeding, Example 2 is an improvement on Example 1. (See attached document for details.) Figure 2 and Figure 5 Both sets of support boxes 2 are equipped with a striking assembly 16. The striking assembly 16 includes a cylinder 1601 and a connecting shaft 1603 installed inside the support box 2. The output end of the cylinder 1601 is connected to a rack 1602. A gear plate 1604 is fixed on the outer surface of the connecting shaft 1603, and the rack 1602 meshes with the gear plate 1604. A striking ball 1606 is fixed on one side of the gear plate 1604 through a connecting rod 1605. The cylinder 1601 drives the rack 1602 to move up and down, thereby driving the gear plate 1604 to rotate regularly in both directions, thereby realizing the swing of the striking ball 1606, which has the effect of shaking off the wall powder and preventing material blockage. See Figure 2 and Figure 5 In the above embodiment, the striking ball 1606 is provided in two sets, and the two sets of striking balls 1606 are made of rubber material. The rubber material striking ball 1606 can ensure the striking and shaking effect while avoiding impact damage to the mixing cylinder 4 caused by hard contact, thus taking into account both practicality and equipment protection.

[0029] See Figure 1 , Figure 2 and Figure 5 In the above embodiment, another set of support boxes 2 are equipped with a control panel 10 on their outer surface, and the cylinder 1601 and the drive motor 12 are electrically connected to the control panel 10. The operator can control the cylinder 1601 and the drive motor 12 through the control panel 10.

[0030] The implementation principle of this utility model is as follows: First, the staff opens the feed port 6 with the inverted "V" shaped cross section at the top of the mixing cylinder 4, and uses its inclined guiding structure to quickly add metal powder and non-metal powder (such as iron powder and graphite powder) into the cylinder to avoid powder leakage; after the feeding is completed, the threaded sealing cap 7 inside the feed port 6 is tightened to seal the mixing cylinder 4. Subsequently, the staff started the drive motor 12. The rotation of the drive motor 12 caused the first active bevel gear 13 to rotate. The first active bevel gear 13 would drive the two sets of first driven bevel gears 14 to rotate. One set of first driven bevel gears 14 drove the transmission shaft 15 to rotate. Through the meshing transmission of the second active bevel gear 20 and the second driven bevel gear 17, the stirring shaft 21 and the stirring blade 11 were made to stir horizontally, quickly breaking up the powder clumps in the cylinder. At the same time, the other set of first driven bevel gears 14 drove the rotating tube 5 and the mixing cylinder 4 to tumble up and down as a whole, actively breaking the tendency of metal powder to settle due to its high density, and allowing the powder in the cylinder to flow up and down in all directions. Finally, during material feeding, the operator starts cylinder 1601. Cylinder 1601 moves up and down, driving rack 1602 to move up and down synchronously, which in turn drives gear 1604 to rotate regularly in both directions. When gear 1604 rotates, it drives striking ball 1606 to swing back and forth through connecting rod 1605. This causes striking ball 1606 to strike the outer wall of mixing cylinder 4 at a high frequency and continuously, causing mixing cylinder 4 to vibrate at a high frequency. This high frequency vibration can quickly shake off the powder adhering to the inner wall of mixing cylinder 4, minimizing powder waste caused by residue on the wall surface, and can also effectively break up powder bridging that may form at discharge port 8, avoiding material blockage.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A powder mixing device for a powder forming machine, comprising a base (1), characterized in that: Two sets of support boxes (2) are installed on the top of the base (1). The inner side of the support box (2) is connected to the mixing cylinder (4) through the rotating shaft (3) and the rotating tube (5) respectively. A drive shaft (15) runs through one side of the mixing cylinder (4), and one end of the drive shaft (15) extends into the interior of the support box (2). A sealing box (19) is fixed inside the mixing cylinder (4) by a fixing rod (18). The other end of the drive shaft (15) extends into the interior of the sealing box (19) and is fixed with a second active bevel gear. (20) A stirring shaft (21) runs through the top and bottom of the sealed box (19). A second driven bevel tooth (17) is fixed at one end of the stirring shaft (21), and a stirring blade (11) is fixed at the other end of the stirring shaft (21). A first driven bevel tooth (14) is fixed on one side of the outer surface of the transmission shaft (15) and the outer surface of the rotating tube (5). A drive motor (12) is installed inside the lower part of a set of support boxes (2). The output end of the drive motor (12) is connected to a first active bevel tooth (13). Both sets of support boxes (2) are equipped with striking components (16).

2. The powder mixing device for a powder forming machine according to claim 1, characterized in that: The striking assembly (16) includes a cylinder (1601) and a connecting shaft (1603) installed inside the support box (2). The output end of the cylinder (1601) is connected to a rack (1602). A gear plate (1604) is fixed on the outer surface of the connecting shaft (1603). The rack (1602) meshes with the gear plate (1604). A striking ball (1606) is fixed on one side of the gear plate (1604) through a connecting rod (1605).

3. The powder mixing device for a powder forming machine according to claim 2, characterized in that: The striking ball (1606) is provided in two sets, and both sets of the striking ball (1606) are made of rubber material.

4. The powder mixing device for a powder forming machine according to claim 2, characterized in that: Another set of support boxes (2) has an operating panel (10) installed on its outer surface, and the cylinder (1601) and the drive motor (12) are both electrically connected to the operating panel (10).

5. The powder mixing device for a powder forming machine according to claim 1, characterized in that: The mixing cylinder (4) has a feed inlet (6) at the top, and a sealing cap (7) is threaded on the inner side of the feed inlet (6). The cross-section of the feed inlet (6) is in the shape of an inverted "V".

6. The powder mixing device for a powder forming machine according to claim 1, characterized in that: The bottom of the mixing cylinder (4) is provided with a discharge port (8), and the outer surface of the discharge port (8) is provided with a discharge valve (9).

7. The powder mixing device for a powder forming machine according to claim 1, characterized in that: The first driven bevel tooth (14) is provided in two sets, and the first driving bevel tooth (13) meshes with the two sets of first driven bevel teeth (14) respectively.

8. The powder mixing device for a powder forming machine according to claim 1, characterized in that: The second driven bevel tooth (17) is provided in two sets, and the second driving bevel tooth (20) meshes with the two sets of second driven bevel teeth (17) respectively.

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