Rail type rocker arm automatic sand mixer based on automobile mold casting

Abstract

The utility model belongs to the technical field of casting equipment, and particularly relates to a rail type rocker arm automatic sand mixer based on an automobile mold casting, which comprises a mixing hopper and a feed hopper arranged above the mixing hopper, the molding sand mixing device has the beneficial effects that the transmission rod in the mixing hopper is connected with the servo motor I to drive the two groups of spiral blades with opposite spiral directions, so that molding sand is quickly convectively stirred in the mixing hopper, the sand mixing efficiency is greatly improved, the molding sand is scattered in all directions under the driving of the transmission rod by the swing rod, the connecting rod and the scattering blades, and the molding sand is uniformly mixed by matching with the annular track and the T-shaped sliding bulge. Stable movement of the scattering blades is guaranteed, the sand mixing uniformity is further enhanced, molding sand caking is reduced, and stable molding sand quality is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of casting equipment technology, specifically relating to a track-type rocker arm automatic sand mixer based on automobile mold castings. Background Technology

[0002] In the modern automotive manufacturing industry, the quality of automotive mold castings directly affects the overall performance and appearance of the car. As a key material in casting, the quality of molding sand plays a decisive role in the precision, surface roughness, and mechanical properties of the castings. High-quality molding sand can ensure that the castings have clear outlines and accurate dimensions, while also possessing good strength and toughness, and reducing casting defects such as sand holes, porosity, and sand inclusions.

[0003] Currently, many foundry enterprises still use traditional sand mixers, which have many insurmountable drawbacks. Regarding the uniformity of sand mixing, traditional sand mixers have a relatively simple mixing method, and the design of the mixing blades is not reasonable enough, resulting in insufficient mixing of the molding sand during the mixing process. For example, common blades can only mix the molding sand in a limited area, making it difficult to reach all corners of the sand hopper. This prevents the raw sand, binder, and additives from being evenly distributed, seriously affecting the quality stability of the molding sand.

[0004] To address the aforementioned issues, this application proposes an automatic rocker arm sand mixer based on automotive mold castings. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a track-mounted rocker arm automatic sand mixer for automotive mold castings. A transmission rod inside the mixing hopper is connected to a servo motor, driving two sets of spiral blades with opposite directions. This causes rapid convection and mixing of the molding sand within the mixing hopper, significantly improving mixing efficiency. The swing arm, connecting rod, and dispersing blades, driven by the transmission rod, disperse the molding sand in all directions. Combined with the annular track and T-shaped sliding convex section, this ensures stable movement of the dispersing blades, further enhancing the uniformity of the mixed sand, reducing sand agglomeration, and guaranteeing stable molding sand quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a track-type rocker arm automatic sand mixer based on automobile mold castings, comprising a mixing hopper and a feeding hopper installed above the mixing hopper;

[0007] A servo motor is installed on the top of the mixing hopper. The output end of the servo motor extends into the mixing hopper and is connected to a transmission rod located inside the mixing hopper. Two sets of spiral blades are installed on the surface of the transmission rod, and the spiral directions of the two sets of spiral blades are opposite.

[0008] As a preferred embodiment of the present invention, a track-type rocker arm automatic sand mixer based on automotive mold castings, the transmission rod has multiple swing arms mounted on its surface, and a connecting rod is mounted on one end of each swing arm. The connecting rod has multiple dispersing blades integrally formed on its surface.

[0009] As a preferred embodiment of the present invention, a track-type rocker arm automatic sand mixer based on automotive mold castings, an annular track is installed on the inner top surface of the mixing hopper, and a T-shaped sliding protrusion is slidably connected inside the annular track, the T-shaped sliding protrusion being connected to a connecting rod.

[0010] As a preferred embodiment of the present invention, an automatic rocker arm sand mixer based on automotive mold castings, symmetrical opening and closing plates are provided at the bottom outlet of the mixing hopper. A clearance slide is fixedly installed on one side of the opening and closing plate. A hinge block is hinged to the surface of the clearance slide. The hinge block is fixedly installed on one side of the bottom of the mixing hopper. A hinge seat is fixedly installed on one side surface of the mixing hopper. A hydraulic rod is hinged inside the hinge seat. One end of the hydraulic rod is slidably connected to a groove opened on the surface of the clearance slide.

[0011] As a preferred embodiment of the present invention, a track-type rocker arm automatic sand mixer based on automotive mold castings, a servo motor is installed on one side of the mixing hopper, a support is installed at the bottom of the mixing hopper, and a movable wheel is rotatably connected to the bottom end of the support. The roller shaft of one of the movable wheels is connected to the output shaft end of the servo motor through a sprocket transmission group.

[0012] As a preferred embodiment of the present invention, a track-type rocker arm automatic sand mixer based on automotive mold castings, the bottom of the mixing hopper is provided with a guide rail, and the mixing hopper is slidably connected to the guide rail via a moving wheel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model utilizes a combination of a mixing hopper, a transmission rod, spiral blades, a swing rod, a connecting rod, dispersing blades, an annular track, a hinged seat, an opening and closing plate, a guide rail, and moving wheels. The transmission rod inside the mixing hopper is connected to a servo motor, which drives two sets of spiral blades with opposite spiral directions, causing the molding sand to be rapidly convected and stirred within the mixing hopper, greatly improving the sand mixing efficiency. The swing rod, connecting rod, and dispersing blades, driven by the transmission rod, disperse the molding sand in all directions. Combined with the annular track and T-shaped sliding convex surface, this ensures stable movement of the dispersing blades, further enhancing the uniformity of sand mixing, reducing molding sand agglomeration, and ensuring stable molding sand quality.

[0015] The bottom outlet of the mixing hopper is symmetrically equipped with opening and closing plates. Through the coordinated work of hydraulic rods, hinge seats, hinge blocks and clearance slides, the opening and closing angle of the opening and closing plates can be precisely controlled, so as to achieve precise control of the discharge volume and discharge speed and adapt to different production needs.

[0016] The second servo motor on one side of the mixing bucket drives the moving wheel through the sprocket transmission group, realizing the precise movement and positioning of the mixing bucket. The power transmission is efficient and stable, and the movement speed and direction can be flexibly controlled to meet different working scenarios. Combined with the bottom guide rail, it provides precise guidance for the movement of the mixing bucket. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of a partial internal structure of the mixing hopper in this utility model;

[0020] Figure 3 In this utility model Figure 2 A schematic diagram of the bottom view structure;

[0021] Figure 4 This is a schematic diagram of the opening and closing plate, the clearance sliding column, and the hydraulic rod in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the hinge seat, opening and closing plate and hinge block in this utility model;

[0023] In the picture:

[0024] 1. Mixing hopper; 2. Feed hopper; 3. Servo motor one; 4. Transmission rod; 5. Spiral blade; 6. Swing rod; 7. Connecting rod; 8. Dispersing blade; 9. Circular track; 10. T-shaped sliding convexity; 11. Hinge seat; 12. Hydraulic rod; 13. Opening and closing plate; 14. Hinge block; 15. Clearing slide; 16. Bracket; 17. Servo motor two; 18. Guide rail; 19. Moving wheel; 20. Chain drive assembly. Detailed Implementation

[0025] 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.

[0026] Example

[0027] like Figures 1-5 As shown;

[0028] An automatic rocker arm sand mixer based on automotive mold castings, the automatic rocker arm sand mixer includes a mixing hopper 1 and a feed hopper 2 installed above the mixing hopper 1;

[0029] A servo motor 3 is installed on the top of the mixing hopper 1. The output end of the servo motor 3 extends into the mixing hopper 1 and is connected to the transmission rod 4 set inside the mixing hopper 1. Two sets of spiral blades 5 are installed on the surface of the transmission rod 4, and the spiral directions of the two sets of spiral blades 5 are opposite.

[0030] Two sets of spiral blades 5 with opposite spiral directions cause the molding sand to generate a bidirectional spiral motion when the servo motor 3 drives the transmission rod 4 to rotate. This unique motion allows the molding sand to tumble and convect rapidly up and down and left and right within the mixing hopper 1, greatly shortening the mixing time. Compared to traditional single-spiral-blade sand mixers, more molding sand mixing operations can be completed in the same amount of time, meeting the high-efficiency requirements of large-scale automotive mold casting production for molding sand. The opposite spiral direction of the blades causes the molding sand to form a complex and comprehensive movement trajectory within the mixing hopper 1, avoiding the accumulation of molding sand in local areas or insufficient mixing. Under this strong convection and stirring, the raw sand, binder, and additives can be more evenly distributed, effectively improving the stability of molding sand quality. This provides a solid guarantee for the high-precision and high-quality production of automotive mold castings and reduces casting defects such as sand holes and porosity caused by uneven molding sand.

[0031] Multiple swing arms 6 are mounted on the surface of the transmission rod 4. Each swing arm 6 has a connecting rod 7 mounted on one end. Multiple dispersing blades 8 are integrally formed on the surface of the connecting rod 7.

[0032] The connection structure between the swing rod 6 and the connecting rod 7 allows the mixing range of the dispersing blade 8 to no longer be limited to the vicinity of the axial direction of the transmission rod 4. The length of the swing rod 6 and the extension direction of the connecting rod 7 allow the dispersing blade 8 to penetrate into every corner of the mixing hopper 1, complementing the spiral blade 5. In the edge area of ​​the mixing hopper 1, the mixing effect of the spiral blade 5 is relatively weak, while the dispersing blade 8 can play a full role, ensuring that the molding sand in these areas can also be fully mixed and dispersed, avoiding the formation of mixing dead zones, and improving the uniformity and consistency of the mixed sand.

[0033] An annular track 9 is installed on the inner top surface of the mixing hopper 1. A T-shaped sliding protrusion 10 is slidably connected inside the annular track 9 and is connected to the connecting rod 7.

[0034] The tight fit between the T-shaped sliding protrusion 10 and the annular track 9 provides stable support for the connecting rod 7.

[0035] A hinge plate 13 is symmetrically arranged at the bottom outlet of the mixing hopper 1. A clearance slide 15 is fixedly installed on one side of the hinge plate 13. A hinge block 14 is hinged to the surface of the clearance slide 15. The hinge block 14 is fixedly installed on one side of the bottom of the mixing hopper 1. A hinge seat 11 is fixedly installed on one side surface of the mixing hopper 1. A hydraulic rod 12 is hinged inside the hinge seat 11. One end of the hydraulic rod 12 is slidably connected in a groove opened on the surface of the clearance slide 15.

[0036] By using the hydraulic rod 12 to control the opening and closing plate 13, the opening and closing of the discharge port can be realized without the need for direct manual contact with the discharge port. This avoids injury to personnel caused by the splashing of molding sand during the discharge process, improves the safety of operation, and at the same time, this automated control method also greatly reduces the labor intensity of operators and improves work efficiency.

[0037] A servo motor 17 is installed on one side of the mixing hopper 1, and a bracket 16 is installed at the bottom of the mixing hopper 1. A movable wheel 19 is rotatably connected to the bottom end of the bracket 16, and the roller shaft of one of the movable wheels 19 is connected to the output shaft end of the servo motor 17 through a sprocket transmission group 20.

[0038] The mixing hopper 1 can be moved and positioned precisely, ensuring that it moves along a preset path and position, whether in scenarios where the mixed materials need to be accurately transported to a designated location or in production processes where precise docking with other equipment is required, thereby improving the accuracy and reliability of production.

[0039] The bottom of the mixing hopper 1 is provided with a guide rail 18, and the mixing hopper 1 is slidably connected to the guide rail 18 via a moving wheel 19.

[0040] The guide rail 18 provides precise guidance for the movement of the mixing hopper 1, ensuring that the mixing hopper 1 can only move along the direction of the guide rail, avoiding deviation or shaking during the movement, making the movement of the mixing hopper 1 more stable and accurate, which is conducive to improving the precision and reliability of the production process, and can ensure that the mixing hopper accurately delivers materials to the designated location.

[0041] It should be noted that the sprocket drive assembly 20 mainly consists of a driving sprocket, a driven sprocket, and a chain. The driving sprocket is installed on the output shaft end of the servo motor 17, the driven sprocket is connected to the roller shaft of one of the moving wheels 19, and the chain, as a key component connecting the driving sprocket and the driven sprocket, plays the role of transmitting power in the sprocket drive assembly 20.

[0042] The working principle and usage process of this utility model are as follows: First, according to the formula of molding sand required for automobile mold casting, raw sand, binder, additives and other materials are added into the feed hopper 2 respectively. Then, the servo motor 3 is started and the transmission rod 4 drives the spiral blades 5 to rotate. Since the spiral directions of the two sets of spiral blades 5 are opposite, the molding sand can generate strong convection and stirring in the mixing hopper 1 to achieve preliminary mixing. At the same time, the swing rod 6 and the connecting rod 7 are driven by the transmission rod 4 to make the dispersing blades 8 slide in the annular track 9 to further disperse and mix the molding sand to ensure the uniformity of the molding sand.

[0043] Once the molding sand is mixed to the required consistency, the servo motor 17 is activated, which drives the moving wheel 19 through the sprocket transmission group 20, causing the mixing hopper 1 to move along the guide rail 18 to the designated position, such as the molding area or the casting area. After reaching the designated position, the hydraulic rod 12 is activated, which opens the opening and closing plate 13 through the hinge seat 11 and the hinge block 14, allowing the mixed molding sand to be discharged from the discharge port at the bottom of the mixing hopper 1 for subsequent production.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic rocker arm sand mixer based on automotive mold castings, comprising a mixing hopper (1) and a feed hopper (2) mounted above the mixing hopper (1); Its features are: A servo motor (3) is installed on the top of the mixing hopper (1). The output end of the servo motor (3) extends into the mixing hopper (1) and is connected to a transmission rod (4) set inside the mixing hopper (1). Two sets of spiral blades (5) are installed on the surface of the transmission rod (4), and the spiral directions of the two sets of spiral blades (5) are opposite.

2. The automatic rocker arm sand mixer based on automotive mold castings according to claim 1, characterized in that: Multiple swing arms (6) are mounted on the surface of the transmission rod (4), and a connecting rod (7) is mounted on one end of each swing arm (6). Multiple dispersing blades (8) are integrally formed on the surface of the connecting rod (7).

3. The automatic rocker arm sand mixer based on automotive mold castings according to claim 2, characterized in that: The mixing hopper (1) has an annular track (9) installed on its inner top surface. A T-shaped sliding protrusion (10) is slidably connected inside the annular track (9), and the T-shaped sliding protrusion (10) is connected to the connecting rod (7).

4. The track-type rocker arm automatic sand mixer based on automotive mold castings according to claim 1, characterized in that: The mixing hopper (1) has symmetrically arranged opening and closing plates (13) at the bottom outlet. A clearance slide (15) is fixedly installed on one side of the opening and closing plate (13). A hinge block (14) is hinged to the surface of the clearance slide (15). The hinge block (14) is fixedly installed on the bottom side of the mixing hopper (1). A hinge seat (11) is fixedly installed on one side surface of the mixing hopper (1). A hydraulic rod (12) is hinged inside the hinge seat (11). One end of the hydraulic rod (12) is slidably connected to a groove opened on the surface of the clearance slide (15).

5. The track-type rocker arm automatic sand mixer based on automotive mold castings according to claim 1, characterized in that: A servo motor (17) is installed on one side of the mixing hopper (1), and a bracket (16) is installed at the bottom of the mixing hopper (1). A movable wheel (19) is rotatably connected to the bottom end of the bracket (16), and the roller shaft of one of the movable wheels (19) is connected to the output shaft end of the servo motor (17) through a sprocket transmission group (20).

6. The automatic rocker arm sand mixer based on automotive mold castings according to claim 5, characterized in that: The bottom of the mixing hopper (1) is provided with a guide rail (18), and the mixing hopper (1) is slidably connected to the guide rail (18) by a moving wheel (19).

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