Sand mixing device for hardware casting machining
By introducing screening and mixing components into the sand mixing device, the problem of existing devices being unable to screen out impurities is solved, the density of the sand mold and the surface quality of the castings are improved, and the dimensional accuracy and forming stability of the castings are ensured.
Patent Information
- Application Number
- CN202520103343.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing sand mixing devices cannot effectively screen out impurities in the sand, resulting in poor sand mold density, reduced sand mold strength and stability, and affecting the molding quality and dimensional accuracy of castings.
A sand mixing device was designed, which includes a screening component and a mixing component. The screening component removes impurities from the sand to ensure the density and stability of the sand mold, while the mixing component is used to uniformly mix the sand, binder and hardener to improve the surface quality and dimensional accuracy of the casting.
It effectively removes impurities from the sand, reduces porosity, inclusions, and burn marks during the casting process, improves the strength and stability of the sand mold, and ensures the dimensional accuracy and surface quality of the castings.
Smart Images
Figure CN223775934U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hardware casting technology, and more specifically, to a sand mixing device for hardware casting processing. Background Technology
[0002] In the casting process of hardware parts, a sand mixing device is required. The hardware casting sand mixing device is a device used in the casting production process to mix materials such as casting sand, binder, and hardener. The purpose is to mix these materials evenly in order to prepare a high-quality mold. Its main function is to ensure the uniformity and suitability of the casting sand, thereby improving the quality of castings and production efficiency.
[0003] Sand mixing devices typically mix new and old sand. New sand often contains impurities such as grass roots, coal dust, and mud lumps, while old sand often contains various impurities such as nails, iron blocks, and sand clumps. Existing sand mixing devices cannot screen out the impurities mixed inside the sand. Large particles in the sand (such as iron blocks and sand clumps) may lead to poor sand mold density, reducing the strength and stability of the sand mold. This can make the casting process unstable, easily leading to inaccurate casting shape and increased dimensional errors.
[0004] Therefore, we have made improvements to this and proposed a sand mixing device for metal casting. Utility Model Content
[0005] The purpose of this invention is to address the fact that existing sand mixing devices cannot screen out impurities mixed in with the sand. Large particles in the sand (such as iron blocks, sand clumps, etc.) may lead to poor compactness of the sand mold, reducing the strength and stability of the sand mold. This can cause instability in the casting process, easily leading to problems such as inaccurate casting shape and increased dimensional errors.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0007] A sand mixing device for metal casting and processing is provided to improve the above-mentioned problems.
[0008] The application is as follows:
[0009] The system includes a sand mixer body, a connecting shell fixedly installed at the bottom of the sand mixer body, three support legs fixedly installed at the bottom of the connecting shell, feed shells fixedly installed on both sides of the top of the sand mixer body, a support plate fixedly installed at the top of the inner cavity of the sand mixer body, a screening component provided in the inner cavity of the support plate, a groove opened at the top of the front side of the sand mixer body, a protective shell fixedly installed at the bottom of the sand mixer body, a mixing component fixedly installed at the bottom of the connecting shell, and discharge pipes connected to both sides of the bottom of the sand mixer body, with solenoid valves provided on the surface of the discharge pipes.
[0010] By designing the screening components, impurities in the sand can be screened out. Screening impurities can effectively reduce surface defects such as porosity, inclusions, and scorch marks caused by the combustion or decomposition of impurities during the casting process, thereby improving the surface quality of the castings. Removing larger particles can increase the density of the sand, ensuring that the sand mold has better strength and stability. This can effectively reduce the cracking or deformation of the sand mold during the casting process and maintain the dimensional accuracy of the castings.
[0011] In a preferred embodiment of the sand mixing device for hardware casting provided by this utility model, the screening component includes a first motor, which is fixedly installed in the inner cavity of a support plate. A rotating rod is fixedly installed at the output end of the first motor. A first synchronous pulley is fixedly installed on the surface of the rotating rod. A second synchronous pulley is provided on one side of the first synchronous pulley. A first belt is connected between the surfaces of the first and second synchronous pulleys. A transmission rod is fixedly installed in the inner cavity of the second synchronous pulley. The side of the transmission rod near the support plate is movably connected to the support plate. A cam is fixedly installed on the surface of both the rotating rod and the transmission rod. A screen plate is movably connected to the top of the cam.
[0012] In a preferred embodiment of the sand mixing device for hardware casting provided by this utility model, support blocks are fixedly installed on the front and rear sides of both sides of the sieve plate, and a support rod is slidably connected to the inner cavity of the support block. A spring is provided on the top of the surface of the support rod, and the side of the spring close to the support block is fixedly connected to the support block. The top and bottom of the support rod are fixedly installed in the inner cavity of the support plate.
[0013] In a preferred embodiment of the sand mixing device for hardware casting and processing provided by this utility model, a limiting plate is sleeved on the surface of the first motor, and the side of the limiting plate near the support plate is fixedly connected to the support plate.
[0014] In a preferred embodiment of the sand mixing device for metal casting provided by this utility model, the mixing component includes a second motor, which is fixedly installed at the bottom of the connecting shell. A third synchronous pulley is fixedly installed at the output end of the second motor. A fourth synchronous pulley is provided on one side of the third synchronous pulley. A second belt is connected between the surfaces of the third and fourth synchronous pulleys. A connecting rod is fixedly installed in the inner cavity of the fourth synchronous pulley. A first rotating gear is fixedly installed at the top of the connecting rod. Three second rotating gears mesh with the surface of the first rotating gear. A stirring rod is fixedly installed in the inner cavity of the second rotating gear. A stirring shaft is fixedly installed on the surface of the stirring rod.
[0015] In a preferred embodiment of the sand mixing device for hardware casting provided by this utility model, the surface of the connecting rod is movably connected to the inner cavity of the protective shell, and the side of the stirring rod near the protective shell is movably connected to the protective shell.
[0016] In a preferred embodiment of the sand mixing device for hardware casting provided by this utility model, a stabilizing plate is sleeved on the surface of the second motor, and the stabilizing plate is fixedly connected to the connecting shell on the side near the connecting shell.
[0017] In a preferred embodiment of the sand mixing device for hardware casting and processing provided by this utility model, a fixing ring is provided on the surface of the protective shell, and the side of the fixing ring near the sand mixer body is fixedly connected to the sand mixer body.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] By designing the screening components, impurities in the sand can be screened out. Screening impurities can effectively reduce surface defects such as porosity, inclusions, and scorch marks caused by the combustion or decomposition of impurities during the casting process, thereby improving the surface quality of the castings. Removing larger particles can increase the density of the sand, ensuring that the sand mold has better strength and stability. This can effectively reduce the cracking or deformation of the sand mold during the casting process and maintain the dimensional accuracy of the castings. Attached Figure Description
[0020] Figure 1 A schematic diagram of the sand mixing device for casting and processing hardware parts provided in this application;
[0021] Figure 2 A bottom sectional view of the structure of the sand mixing device for casting and processing hardware parts provided in this application;
[0022] Figure 3 A schematic front sectional view of the sand mixing device for casting and processing hardware parts provided in this application;
[0023] Figure 4 A rear view schematic diagram of the screening component of the sand mixing device for casting and processing of hardware parts provided in this application;
[0024] Figure 5 A bottom view schematic diagram of the mixing components of the sand mixing device for casting and processing hardware provided in this application.
[0025] The image shows:
[0026] 1. Sand mixer body; 2. Connecting shell; 3. Support legs; 4. Feed shell; 5. Support plate; 6. Screening assembly; 601. First motor; 602. Rotating rod; 603. First synchronous pulley; 604. First belt; 605. Second synchronous pulley; 606. Transmission rod; 607. Cam; 608. Screen plate; 609. Support block; 610. Support rod; 611. Spring; 612. Limiting plate; 7. Groove; 8. Protective shell; 9. Mixing assembly; 901. Second motor; 902. Third synchronous pulley; 903. Second belt; 904. Fourth synchronous pulley; 905. Connecting rod; 906. First rotating gear; 907. Second rotating gear; 908. Stirring rod; 909. Stirring shaft; 910. Stabilizing plate; 10. Discharge pipe; 11. Solenoid valve; 12. Fixing ring. Detailed Implementation
[0027] 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, not all, of the embodiments of this utility model.
[0028] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0033] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0035] Example 1
[0036] Please refer to Figure 1-5 A sand mixing device for metal casting includes a sand mixer body 1, a connecting shell 2 fixedly installed at the bottom of the sand mixer body 1, three support legs 3 fixedly installed at the bottom of the connecting shell 2, feeding shells 4 fixedly installed on both sides of the top of the sand mixer body 1, a support plate 5 fixedly installed at the top of the inner cavity of the sand mixer body 1, a screening component 6 provided in the inner cavity of the support plate 5, a groove 7 opened at the top of the front side of the sand mixer body 1, a protective shell 8 fixedly installed at the bottom of the sand mixer body 1, a mixing component 9 fixedly installed at the bottom of the connecting shell 2, and discharge pipes 10 connected to both sides of the bottom of the sand mixer body 1, with solenoid valves 11 provided on the surface of the discharge pipes 10. The screening assembly 6 includes a first motor 601, which is fixedly installed in the inner cavity of the support plate 5. A rotating rod 602 is fixedly installed at the output end of the first motor 601. A first synchronous pulley 603 is fixedly installed on the surface of the rotating rod 602. A second synchronous pulley 605 is provided on one side of the first synchronous pulley 603. A first belt 604 is connected between the surfaces of the first synchronous pulley 603 and the second synchronous pulley 605. A transmission rod 606 is fixedly installed in the inner cavity of the second synchronous pulley 605. The side of the transmission rod 606 near the support plate 5 is movably connected to the support plate 5. A cam 607 is fixedly installed on the surfaces of both the rotating rod 602 and the transmission rod 606. A screen plate 608 is movably connected to the top of the cam 607. Support blocks 609 are fixedly installed on the front and rear sides of both sides of the screen plate 608. Support rods 610 are slidably connected to the inner cavity of the support blocks 609. A spring 611 is provided on the top surface of the support rod 610, and the side of the spring 611 near the support block 609 is fixedly connected to the support block 609. The top and bottom of the support rod 610 are fixedly installed in the inner cavity of the support plate 5. A limiting plate 612 is sleeved on the surface of the first motor 601, and the side of the limiting plate 612 near the support plate 5 is fixedly connected to the support plate 5. A fixing ring 12 is sleeved on the surface of the protective shell 8, and the side of the fixing ring 12 near the sand mixer body 1 is fixedly connected to the sand mixer body 1.
[0037] During implementation, sand enters the interior of the sand mixer body 1 through the feed shell 4. Upon entering the body 1, the sand falls onto the top of the screen plate 608, where it is screened to separate impurities. Because the top of the screen plate 608 is inclined, the screened impurities are discharged through the groove 7. During the screening process, the first motor 601 is activated. The first motor 601 drives the rotating rod 602 to rotate, which in turn drives the first synchronous pulley 603. The rotation of the first synchronous pulley 603, via the first belt 604, drives the second synchronous pulley 605 to rotate, which in turn drives the transmission rod 606 to rotate. When the moving rod 602 and the transmission rod 606 rotate, they drive multiple cams 607 to rotate. When the cams 607 rotate, they push the screen plate 608 to move. During the up and down movement, the screen plate 608 is reset by the spring 611, which enables the screen plate 608 to swing back and forth. The back and forth swinging helps the sand to fall more effectively to the bottom through the screen plate 608. This movement can prevent the sand from getting stuck in the screen plate 608, thereby improving the screening efficiency and uniformity. When the sand falls to the bottom of the inner cavity of the sand mixer body 1, the mixing component 9 stirs and mixes the sand, binder and hardener and other materials. The mixed sand is discharged through the discharge pipe 10.
[0038] Example 2
[0039] The mixing component 9 includes a second motor 901, which is fixedly mounted on the bottom of the connecting shell 2. A third synchronous pulley 902 is fixedly mounted on the output end of the second motor 901. A fourth synchronous pulley 904 is provided on one side of the third synchronous pulley 902. A second belt 903 is connected between the surfaces of the third synchronous pulley 902 and the fourth synchronous pulley 904. A connecting rod 905 is fixedly mounted in the inner cavity of the fourth synchronous pulley 904. A first rotating gear 906 is fixedly mounted on the top of the connecting rod 905. Three second rotating gears 907 mesh with the surface of the first rotating gear 906. A stirring rod 908 is fixedly mounted in the inner cavity of the second rotating gears 907. A stirring shaft 909 is fixedly mounted on the surface of the stirring rod 908. The surface of the connecting rod 905 is movably connected to the inner cavity of the protective shell 8, and the side of the stirring rod 908 near the protective shell 8 is movably connected to the protective shell 8. A stabilizing plate 910 is sleeved on the surface of the second motor 901, and the side of the stabilizing plate 910 near the connecting shell 2 is fixedly connected to the connecting shell 2.
[0040] During implementation, when it is necessary to mix materials such as sand, binder, and hardener, the second motor 901 is started. When the second motor 901 is in use, it drives the third synchronous pulley 902 to rotate. When the third synchronous pulley 902 rotates, it drives the fourth synchronous pulley 904 to rotate via the second belt 903. When the fourth synchronous pulley 904 rotates, it drives the connecting rod 905 to rotate. When the connecting rod 905 rotates, it drives the first rotating gear 906 to rotate. When the first rotating gear 906 rotates, it drives the three second rotating gears 907 to rotate. When the second rotating gears 907 rotate, they drive the stirring rod 908 to rotate. When the stirring rod 908 rotates, it drives the stirring shaft 909 to rotate. Through the rotation of multiple stirring shafts 909, the materials such as sand, binder, and hardener are mixed.
[0041] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.
Claims
1. A sand mixing device for metal casting, comprising a sand mixer body (1), characterized in that, A connecting shell (2) is fixedly installed at the bottom of the sand mixer body (1). Three support legs (3) are fixedly installed at the bottom of the connecting shell (2). Feed shells (4) are fixedly installed on both sides of the top of the sand mixer body (1). A support plate (5) is fixedly installed at the top of the inner cavity of the sand mixer body (1). A screening component (6) is provided in the inner cavity of the support plate (5). A groove (7) is opened on the top of the front side of the sand mixer body (1). A protective shell (8) is fixedly installed at the bottom of the sand mixer body (1). A mixing component (9) is fixedly installed at the bottom of the connecting shell (2). Discharge pipes (10) are connected to both sides of the bottom of the sand mixer body (1). A solenoid valve (11) is provided on the surface of the discharge pipe (10).
2. The sand mixing device for hardware casting and processing according to claim 1, characterized in that, The screening assembly (6) includes a first motor (601), which is fixedly installed in the inner cavity of the support plate (5). A rotating rod (602) is fixedly installed at the output end of the first motor (601). A first synchronous pulley (603) is fixedly installed on the surface of the rotating rod (602). A second synchronous pulley (605) is provided on one side of the first synchronous pulley (603). A first belt (604) is connected between the surfaces of the first synchronous pulley (603) and the second synchronous pulley (605). A transmission rod (606) is fixedly installed in the inner cavity of the second synchronous pulley (605). The side of the transmission rod (606) near the support plate (5) is movably connected to the support plate (5). A cam (607) is fixedly installed on the surfaces of both the rotating rod (602) and the transmission rod (606). A screen plate (608) is movably connected to the top of the cam (607).
3. The sand mixing device for hardware casting and processing according to claim 2, characterized in that, Support blocks (609) are fixedly installed on the front and rear sides of both sides of the sieve plate (608). A support rod (610) is slidably connected to the inner cavity of the support block (609). A spring (611) is provided on the top of the surface of the support rod (610). The side of the spring (611) close to the support block (609) is fixedly connected to the support block (609). The top and bottom of the support rod (610) are fixedly installed in the inner cavity of the support plate (5).
4. The sand mixing device for hardware casting according to claim 2, characterized in that, A limiting plate (612) is fitted on the surface of the first motor (601), and the limiting plate (612) is fixedly connected to the support plate (5) on the side near the support plate (5).
5. A sand mixing device for casting and processing hardware parts according to claim 1, characterized in that, The mixing component (9) includes a second motor (901), which is fixedly installed at the bottom of the connecting shell (2). A third synchronous pulley (902) is fixedly installed at the output end of the second motor (901). A fourth synchronous pulley (904) is provided on one side of the third synchronous pulley (902). A second belt (903) is connected between the surfaces of the third synchronous pulley (902) and the fourth synchronous pulley (904). A connecting rod (905) is fixedly installed in the inner cavity of the fourth synchronous pulley (904). A first rotating gear (906) is fixedly installed on the top of the connecting rod (905). Three second rotating gears (907) mesh on the surface of the first rotating gear (906). A stirring rod (908) is fixedly installed in the inner cavity of the second rotating gear (907). A stirring shaft (909) is fixedly installed on the surface of the stirring rod (908).
6. The sand mixing device for hardware casting according to claim 5, characterized in that, The surface of the connecting rod (905) is movably connected to the inner cavity of the protective shell (8), and the stirring rod (908) is movably connected to the protective shell (8) on the side near the protective shell (8).
7. A sand mixing device for hardware casting according to claim 5, characterized in that, The surface of the second motor (901) is fitted with a stabilizing plate (910), and the stabilizing plate (910) is fixedly connected to the connecting shell (2) on the side near the connecting shell (2).
8. The sand mixing device for hardware casting according to claim 1, characterized in that, The protective shell (8) is fitted with a fixing ring (12), and the fixing ring (12) is fixedly connected to the sand mixer body (1) on the side close to the sand mixer body (1).