Sand mould printing winged spiral type double-row planetary stirring device

Abstract

The utility model discloses a kind of wing spiral type double planetary stirring devices for sand printing, it is related to sand casting auxiliary equipment technical field, including stirring pole, the stirring pole side is equipped with hydraulic valve, the stirring pole side and the hydraulic valve execution end are equipped with discharge port in sleeve, the stirring pole bottom is equipped with motor, the stirring pole bottom inner wall is equipped with stirring mechanism;Stirring mechanism includes the transmission pull of the motor execution end connection by shaft coupling, the transmission pull top is equipped with bottom shell and top shell, the bottom shell and top shell between are equipped with sun gear, planetary gear, internal gear, the sun gear top is equipped with baffle, the baffle top is equipped with triangular rotating lever, the planetary gear top is equipped with stirring paddle.The utility model improves the adaptability of equipment to different sand mould raw materials, expands the application range of equipment.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of auxiliary equipment for sand casting, specifically a winged spiral double planetary stirring device for sand casting. Background Technology

[0002] Sand mold printing, as an important component of modern advanced manufacturing technology, has been widely used in the foundry industry. It can quickly and accurately produce sand molds of complex shapes, significantly shortening product development cycles and improving production efficiency. During the sand mold printing process, the mixing quality of the sand raw materials directly affects key performance indicators of the final sand mold, such as its strength, dimensional accuracy, and surface quality.

[0003] Currently, traditional sand mold raw material mixing equipment has many limitations. Most common mixing devices use a single mixing method, such as simple paddle mixing. This method can only mix the raw materials in a localized area, making it difficult to achieve comprehensive and uniform mixing. During the mixing process, dead zones are easily formed, causing some raw materials to not be fully mixed, resulting in uneven composition of the sand mold raw materials, which in turn affects the overall quality of the sand mold.

[0004] Furthermore, traditional mixing equipment has low mixing efficiency, often requiring a long mixing time to achieve a good mixing effect. This not only increases the production cycle but also consumes a lot of energy. Moreover, traditional equipment lacks flexibility and adaptability when mixing sand mold raw materials with different characteristics, making it difficult to adjust the mixing parameters according to the physical properties of the raw materials (such as particle size and moisture content), resulting in unsatisfactory mixing effects for some special raw materials.

[0005] As sand molding technology develops towards higher precision and performance, the quality requirements for sand molding raw materials are becoming increasingly stringent. Existing mixing equipment can no longer meet the needs of modern sand molding production. Therefore, there is an urgent need for a new type of mixing device that can efficiently and uniformly mix sand molding raw materials. Utility Model Content

[0006] Based on this, the purpose of this utility model is to provide a winged spiral double planetary stirring device for sand mold printing, so as to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A wing-shaped spiral double planetary mixing device for sand mold printing includes a mixing bar, a hydraulic valve on one side of the mixing bar, a discharge port on one side of the mixing bar and sleeved on the actuating end of the hydraulic valve, a motor at the bottom of the mixing bar, and a mixing mechanism on the inner wall of the bottom of the mixing bar. The stirring mechanism includes a transmission pump connected to the motor actuator via a coupling. The transmission pump has a bottom shell and a top shell at its top. A stellar gear, a planetary gear, and an internal meshing gear are provided between the bottom shell and the top shell. A partition is provided on the top of the stellar gear. A triangular rotating rod is provided on the top of the partition. A stirring paddle is provided on the top of the planetary gear.

[0008] Preferably, the hydraulic valve consists of a hydraulic rod located at the top of one side of the stirring bar, a connecting rod located at the actuating end of the hydraulic rod, and a baffle hinged to the connecting rod.

[0009] Preferably, the top of the other side of the stirring bar is provided with a first inlet, and the top of the stirring bar is provided with a second inlet.

[0010] Preferably, the bottom of the top shell is connected to the center of the top of the triangular rotating rod.

[0011] Preferably, the top of the partition is provided with a limiting circular groove.

[0012] Preferably, the end of the triangular rotating rod is provided with a roller, and the roller is slidably connected to the inner wall of the limiting circular groove.

[0013] Preferably, the stirring paddle is composed of a cuboid and a quarter-circular ring.

[0014] In summary, this technical solution has the following main advantages: This invention employs a double planetary mixing structure design, enabling the mixing paddle and triangular rotor to form complex motion trajectories during the mixing process. The planetary gears drive the mixing paddle to revolve and rotate, while the triangular rotor slides within a limiting groove on the partition plate to achieve rotation. This multi-dimensional, multi-directional mixing action breaks the laminar flow state of the raw materials during mixing, allowing the materials to tumble and mix comprehensively within the mixing paddle. This effectively eliminates dead zones in the mixing process, significantly improving the uniformity of the sand mold raw materials and ensuring consistent composition across all parts of the sand mold, thereby enhancing the overall quality of the sand mold. Attached Figure Description Figure 1 This is an isometric view of the overall structure of this utility model; Figure 2 Axonometric view of part of the structure of this utility model Figure 1 ; Figure 3 Axonometric view of part of the structure of this utility model Figure 2 ; Figure 4 This is an isometric view of the hydraulic valve structure of this utility model; Figure 5 This is an isometric view of the stirring mechanism structure of this utility model; Figure 6 This is a schematic diagram of the gear structure of this utility model.

[0015] Figure descriptions: 10. Stirring bar; 11. Hydraulic valve; 12. Discharge port; 13. Motor; 20. Stirring mechanism; 21. Transmission pulley; 22. Bottom shell; 23. Top shell; 24. Partition plate; 25. Triangular rotating rod; 26. Stirring paddle; 111. Hydraulic rod; 112. Connecting rod; 113. Baffle plate; 101. Inlet 1; 102. Inlet 2; 241. Limiting groove. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Example like Figures 1 to 5 As shown, this sand-type printing winged spiral double planetary mixer mainly consists of a mixing rod 10, a hydraulic valve 11, a discharge port 12, a motor 13, and a mixing mechanism 20. The mixing rod 10 serves as the main frame of the entire device, providing the mounting base for other components. A hydraulic valve 11 is installed on one side of the mixing rod 10. Specifically, the hydraulic valve 11 consists of a hydraulic rod 111 located at the top of one side of the mixing rod 10, a connecting rod 112 located at the actuating end of the hydraulic rod 111, and a baffle 113 hinged to the connecting rod 112. The discharge port 12 is fitted onto the actuating end of the hydraulic valve 11 and is located on one side of the mixing rod 10. The motor 13 is installed at the bottom of the mixing rod 10, providing power to the mixing mechanism 20. The mixing mechanism 20 is located on the inner wall of the bottom of the mixing rod 10.

[0018] The other side of the stirring bar 10 has a feed inlet 101 and a feed inlet 102, which facilitates the input of sand mold printing materials of different shapes or types.

[0019] The stirring mechanism 20 is connected to the actuator of the motor 13 via a coupling, specifically the transmission pump 21. The transmission pump 21 has a bottom shell 22 and a top shell 23 at its top. A sun gear, planetary gear, and internal meshing gear are arranged between the bottom shell 22 and the top shell 23, as shown in the specific structure below. Figure 6As shown. The top of the planetary gear has a partition 24, and the top of the partition 24 has a limiting groove 241. A roller is located at the end of the triangular rotating rod 25, and the roller is slidably connected to the inner wall of the limiting groove 241, allowing the triangular rotating rod 25 to rotate stably on the partition 24. The top of the planetary gear has a stirring paddle 26, which consists of a cuboid and a quarter-circular ring. The blade's angle can be adjusted according to different gravel densities, ensuring that the blades can effectively propel the material forward during stirring, promoting material circulation within the mixing tank. The ring is tangent to the cuboid, forming a quarter-circular shape. This structure gives the blade a wing-like arc appearance, producing a gentle and enveloping effect during stirring. This helps improve the uniformity of stirring and the continuity of flow. The bottom of the top shell 23 is connected to the center of the top of the triangular rotating rod 25, ensuring structural stability.

[0020] The working principle of this utility model is as follows: When using this device to mix raw materials for sand mold printing, the operator can choose to add the raw materials from either inlet 101 or inlet 102, depending on the characteristics and requirements of the materials. The inlet 101 and inlet 102 provide different feeding methods. For example, solid raw materials can be added from inlet 101, and liquid raw materials can be added from inlet 102, to meet diverse raw material mixing needs.

[0021] After the raw materials are fed into the stirring bar 10, the motor 13 is started. The motor 13 drives the transmission pump 21 to rotate through the coupling, and the transmission pump 21 further transmits the power to the gear system between the bottom shell 22 and the top shell 23. In the gear system, the sun gear is stationary, and the motor drives the planetary gears to revolve around the sun gear, while the planetary gears themselves also rotate.

[0022] Because the planetary gear has a stirring paddle 26 on top, the planetary gear's revolution and rotation drive the stirring paddle 26 to perform complex stirring actions. The stirring paddle 26 is composed of a cuboid and a quarter ring. The cuboid part can tumble the raw materials over a large area during the stirring process, while the quarter ring part can perform more fine stirring and shearing of the raw materials, so that the raw materials can be fully mixed.

[0023] Meanwhile, a partition 24 is provided on the top of the planetary gear. Under the force generated by the movement of the planetary gear, the triangular rotating rod 25 on the partition 24 slides in the limiting groove 241 through the roller at its end, thus achieving its own rotation. The rotation of the triangular rotating rod 25 further stirs the raw materials inside the stirring bar 10, which, together with the stirring action of the stirring paddle 26, forms a double planetary stirring effect, greatly improving the stirring efficiency and mixing uniformity.

[0024] Once the raw materials have been mixed to the required uniformity and quality, the operator controls the hydraulic valve 11. The hydraulic rod 111 extends and retracts, driving the connecting rod 112 to move. The connecting rod 112 further moves the hinged baffle 113, thereby opening the discharge port 12. The mixed sand mold printing raw material is discharged from the mixing bar 10 through the discharge port 12 and enters the next production process.

[0025] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A winged spiral double planetary mixing device for sand mold printing, characterized in that, Includes a stirring bar (10), a hydraulic valve (11) is provided on one side of the stirring bar (10), a discharge port (12) is provided on one side of the stirring bar (10) and sleeved on the actuating end of the hydraulic valve (11), a motor (13) is provided at the bottom of the stirring bar (10), and a stirring mechanism (20) is provided on the inner wall of the bottom of the stirring bar (10). The stirring mechanism (20) includes a transmission shaft (21) connected to the actuator of the motor (13) via a coupling. The transmission shaft (21) has a bottom shell (22) and a top shell (23) at its top. A star gear, a planetary gear, and an internal meshing gear are provided between the bottom shell (22) and the top shell (23). A partition plate (24) is provided at the top of the star gear. A triangular rotating rod (25) is provided at the top of the partition plate (24). A stirring paddle (26) is provided at the top of the planetary gear.

2. The winged spiral double planetary mixing device for sand mold printing according to claim 1, characterized in that, The hydraulic valve (11) consists of a hydraulic rod (111) located on the top of one side of the stirring bar (10), a connecting rod (112) located at the actuating end of the hydraulic rod (111), and a baffle (113) hinged to the connecting rod (112).

3. The winged spiral double planetary mixing device for sand mold printing according to claim 1, characterized in that, The stirring bar (10) has a feed inlet 1 (101) on the top of the other side, and a feed inlet 2 (102) on the top of the stirring bar (10).

4. The winged spiral double planetary mixing device for sand mold printing according to claim 1, characterized in that, The bottom of the top shell (23) is connected to the center of the top of the triangular rotating rod (25).

5. The winged spiral double planetary mixing device for sand mold printing according to claim 1, characterized in that, The top of the partition (24) is provided with a limiting groove (241).

6. The winged spiral double planetary mixing device for sand mold printing according to claim 5, characterized in that, The end of the triangular rotating rod (25) is provided with a roller, which is slidably connected to the inner wall of the limiting circular groove (241).

7. The winged spiral double planetary mixing device for sand mold printing according to claim 1, characterized in that, The stirring paddle (26) consists of two parts: a cuboid and a quarter ring.

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