Sand mold pouring device for bearing castings
The sand casting device for bearings addresses inefficiencies and quality issues by enabling multi-channel pouring and bubble removal, improving production efficiency and quality.
Patent Information
- Application Number
- CN202421770300.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The casting efficiency of existing bearing castings is low, the castings are uneven, and bubbles are difficult to discharge from metal melt, which affects production quality and cost.
A sand-type casting device with a limit ring, a transmission unit and a vibration motor was designed. Through the limit ring limit sand embryo mold, the vibration motor vibrates out bubbles, and uses multi-channel casting and extension tube movement to improve casting efficiency and quality.
It realizes convenient replacement of sand embryo molds, improves casting efficiency, ensures casting quality, reduces bubble generation, and improves production efficiency and authenticity rate.
Smart Images
Figure CN223098000U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand casting, in particular to a sand casting device for bearing castings. Background Technique
[0002] A sand casting device is equipment used in the casting process to pour molten metal into a sand mold to form the required metal casting. This device plays a crucial role in the sand casting process, ensuring the precise shape and size of the casting.
[0003] Currently, when processing bearing castings, due to only one pouring port, it is necessary to wait for the molten liquid to level automatically before pouring can be completed, resulting in a slow pouring efficiency. Moreover, since there is one or two pouring channels, it may cause the casting to be uneven, reducing the production quality. At the same time, during the pouring process, after the molten metal levels in the mold and as the temperature decreases, it is difficult to discharge the internal air bubbles, affecting the later use effect of the casting and even causing scrapping, increasing the production cost. Content of the Utility Model
[0004] The purpose of the utility model is to provide a sand casting device for bearing castings to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions: It includes a mold shell and a mold cover. A sand embryo mold is embedded in the mold shell. A transmission unit is connected to the inner side of the sand embryo mold. An installation frame is connected to the bottom end of the mold shell. A limiting ring is rotatably arranged in the installation frame. A main pouring hole is opened at the top end of the mold cover. A pouring diversion frame is connected to the top end of the main pouring hole. A plurality of through holes are opened inside the mold cover, and a shunt pipe is connected to each through hole. An extension pipe is slidably arranged at the top end of the mold cover. A connecting rod is connected to the top end of the extension pipe. An installation platform is connected to the top end of the mold cover. A swing rod is slidably arranged at the top end of each extension pipe. A linkage rod is slidably arranged between the swing rods. A support rod is rotatably arranged on one side of each swing rod and the linkage rod. The support rod is fixedly arranged at the top end of the installation platform. An expansion rod is rotatably arranged on one side of the swing rod at the end point, and the expansion rod is rotatably arranged at the top end of the installation platform. An inner sand tray is connected to the bottom end of the mold cover.
[0006] Preferably, the transmission unit includes a connecting cylinder and a support frame, and a sealing rubber ring is connected to the inner side of the connecting cylinder.
[0007] Preferably, a sliding hole is opened on one side of the extension pipe. One end of the shunt pipe extends into the extension pipe through the sliding hole, and one end of the shunt pipe is bent.
[0008] Preferably, a lever is connected to one side of the limit ring, and an adjustment hole is provided on one side of the mounting bracket corresponding to the lever.
[0009] Preferably, a plurality of guide bars are provided on the outer ring of the sand embryo mold, and sliding grooves are provided on the inner rings of the mold shell and the limit ring corresponding to the guide bars.
[0010] Preferably, an inner insertion tube is connected to the bottom end of the mold cover, a vibration motor is connected to the inner side of the inner insertion tube, and the bottom end of the inner insertion tube extends into the transmission unit and is connected with a vibration motor.
[0011] Preferably, the end of the through hole far from the extension tube is connected and communicated with the main casting hole, and a material gathering tube is connected to the bottom end of the casting diversion frame.
[0012] Preferably, guide holes are provided at both ends of the swing rod and the linkage rod, and sliding bolts are connected to one side of the top end of the extension tube and one side of the swing rod, wherein the sliding bolts are slidably connected with the corresponding guide holes.
[0013] Preferably, a buffer frame is connected to one side of the inner wall of the inner insertion tube, the vibration motor is fixedly arranged at the bottom end of the buffer frame, and the outer ring of the inner insertion tube is attached to the transmission unit.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. The sand embryo mold can be limited by the rotation of the limit ring of the present utility model, which is convenient for the replacement of the mold model and the demolding operation. At the same time, through the vibration of the vibration motor, the bubbles in the molten metal can be shaken out, ensuring the product qualification rate and the later use effect;
[0016] 2. The present utility model also enables multi-channel pouring simultaneously through the connection between each shunt tube and the main casting hole, improving the pouring efficiency. Through the up and down movement of the extension tube, the pouring quality is ensured and the generation of bubbles is avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic diagram of the overall structure of a sand mold casting device for a bearing cast part of the present utility model;
[0018] Figure 2 is a schematic diagram of the side sectional structure of a sand mold casting device for a bearing cast part of the present utility model;
[0019] Figure 3 is an exploded structure diagram of a sand mold casting device for a bearing cast part of the present utility model.
[0020] In the figure: 1. Mold shell; 2. Mold cover; 3. Sand embryo mold; 31. Guide bar; 4. Transmission unit; 41. Connecting cylinder; 42. Support frame; 5. Mounting frame; 6. Limiting ring; 61. Pushing rod; 7. Main casting hole; 8. Casting diversion frame; 9. Shunt pipe; 10. Extension pipe; 11. Connecting rod; 12. Mounting platform; 13. Swing rod; 14. Link rod; 15. Support rod; 16. Telescopic rod; 17. Inner sand tray; 18. Inner insertion tube; 19. Vibration motor; 20. Sliding hole. Specific implementation manner
[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0022] Please refer to Figures 1-3, the present utility model provides a technical solution: including a mold shell 1 and a mold cover 2. An embryo mold 3 is embedded in the mold shell 1. The embryo mold 3 is connected to the chute inside the mold shell 1 through a guide bar 31 and is embedded in the mold shell 1. Different models of embryo molds 3 can be replaced according to needs. A transmission unit 4 is connected to the inner side of the embryo mold 3, which can transmit the vibration generated by the vibration motor 19 to the embryo mold 3, thereby vibrating out the air bubbles in the internal metal melt and ensuring the quality of the casting. An installation frame 5 is connected to the bottom end of the mold shell 1. A limit ring 6 is rotatably arranged inside the installation frame 5. Chutes are provided corresponding to the guide bar 31 inside the mold shell 1 and the inner ring of the limit ring 6. A main casting hole 7 is provided at the top end of the mold cover 2. A casting diversion frame 8 is connected to the top end of the main casting hole 7. The metal melt is injected into the main casting hole 7 through the casting diversion frame 8. A plurality of through holes are provided inside the mold cover 2, and a shunt tube 9 is connected to each through hole. The metal solution enters the shunt tube 9 inside the through hole and then flows into each extension tube 10. An extension tube 10 is slidably arranged at the top end of the mold cover 2. A connecting rod 11 is connected to the top end of the extension tube 10. An installation platform 12 is connected to the top end of the mold cover 2. Swing rods 13 are slidably arranged at the top ends of the extension tubes 10. A linkage rod 14 is slidably arranged between the swing rods 13. Support rods 15 are rotatably arranged on one side of the swing rods 13 and the linkage rod 14. The support rods 15 are fixedly arranged at the top end of the installation platform 12. An expansion rod 16 is rotatably arranged on one side of the swing rod 13 at the end point. The expansion rod 16 is rotatably arranged at the top end of the installation platform 12. An inner sand tray 17 is connected to the bottom end of the mold cover 2. The inner sand tray 17 is embedded in the embryo mold 3 and can cooperate with the embryo mold 3 to form a sealed sand tool. An inner insertion tube 18 is connected to the bottom end of the mold cover 2. A vibration motor 19 is connected to the inner side of the inner insertion tube 18. The bottom end of the inner insertion tube 18 extends into the transmission unit 4 and is connected to a vibration motor 19;
[0023] The transmission unit 4 includes a connecting cylinder 41 and a support frame 42. A sealing rubber ring is connected to the inner side of the connecting cylinder 41. The connecting cylinder 41 is tightly attached to the outer circle of the inner insertion tube 18 through the sealing rubber ring. When the vibration motor 19 works and generates vibration, the vibration is transmitted to the embryo mold 3 through the support frame 42, thereby vibrating out the bubbles in the metal solution.
[0024] A sliding hole 20 is provided on one side of the extension tube 10. One end of the shunt tube 9 extends into the extension tube 10 through the sliding hole 20, and one end of the shunt tube 9 is bent. When the metal solution flows into the extension tube 10 through the shunt tube 9, it can flow down along the inner wall side of the extension tube 10, avoiding flowing out from the sliding hole 20 and ensuring the diversion effect.
[0025] A lever 61 is connected to one side of the limit ring 6, and an adjustment hole is opened on one side of the mounting frame 5 corresponding to the lever 61. The limit ring 6 is driven by the lever 61 to rotate in the mounting frame 5, so that the slide groove of the inner ring of the limit ring 6 and the guide bar 31 of the outer ring of the sand embryo mold 3 are staggered, thereby limiting the sand embryo mold 3 in the mold shell 1 to achieve the limiting effect.
[0026] One end of the through hole away from the extension tube 10 is connected to the main pouring hole 7, and the bottom end of the pouring guide frame 8 is connected to a material collecting pipe to ensure the accuracy of the metal melt discharge position and the accuracy of the diversion to each through hole.
[0027] Guide holes are provided at both ends of the swing rod 13 and the linkage rod 14, and sliding bolts are connected to one side of the top end of the extension tube 10 and the swing rod 13, wherein the sliding bolts are slidably connected to the corresponding guide holes, thereby ensuring the linkage effect of the swing rod 13 and the linkage rod 14 while satisfying the running trajectory.
[0028] Working principle: When the utility model is in use, the material embryo 3 is clamped into the mold shell 1 through the guide bar 31, the limiting ring 6 is rotated to limit the material embryo 3, and then the mold cover 2 is covered. At the same time, the inner sand tray 17 is clamped into the material embryo 3, and the molten metal is poured into the pouring guide frame 8. The molten metal first flows into the pouring main hole 7, and then flows into each diversion pipe 9, and flows into the extension pipe 10 through the diversion pipe 9. At the same time, the telescopic rod 16 extends and lifts up, thereby driving the swing rod 13 to rotate. The swing rod 13 pushes the corresponding connecting rod 11 downward as it rotates, thereby driving the extension pipe 10 to move downward, so that the extension pipe 10 extends into the embryo 3. When the molten metal flows into the embryo 3 through the extension tube 10, the dead space is reduced to ensure the uniformity of the molten metal. The swing rod 13 rotates and drives the linkage rod 14 to rotate, driving the adjacent group of swing rods 13 to rotate, thereby realizing the synchronous rotation of the swing rods 13, driving each extension tube 10 to move up and down at the same time. As the molten metal enters, the telescopic rod 16 slowly contracts, and the extension tube 10 slowly moves upward, reducing the generation of bubbles in the molten metal during pouring, and then turning on the vibration motor 19 to vibrate again to vibrate out the original air bubbles in the molten metal.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A sand casting device for bearing castings, comprising a mold shell (1) and a mold cover (2), characterized in that: The mold shell (1) is internally fitted with a sand embryo mold (3). A transmission unit (4) is connected to the inner side of the sand embryo mold (3). The bottom end of the mold shell (1) is connected with a mounting frame (5). A limiting ring (6) is rotatably arranged in the mounting frame (5). A main casting hole (7) is formed at the top end of the mold cover (2). A casting diversion frame (8) is connected to the top end of the main casting hole (7). A plurality of through holes are formed inside the mold cover (2), and a shunt pipe (9) is connected in each through hole. An extension pipe (10) is slidably arranged at the top end of the mold cover (2). A connecting rod (11) is connected to the top end of the extension pipe (10). A mounting platform (12) is connected to the top end of the mold cover (2). A swing rod (13) is slidably arranged at the top end of the extension pipe (10). A linkage rod (14) is slidably arranged between the swing rods (13). A support rod (15) is rotatably arranged on one side of each of the swing rod (13) and the linkage rod (14). The support rod (15) is fixedly arranged at the top end of the mounting platform (12). An expansion rod (16) is rotatably arranged on one side of the swing rod (13) at the end point. The expansion rod (16) is rotatably arranged at the top end of the mounting platform (12). An inner sand tray (17) is connected to the bottom end of the mold cover (2).
2. The sand casting device for a bearing casting according to claim 1, characterized in that: The transmission unit (4) includes a connecting cylinder (41) and a support frame (42). A sealing rubber ring is connected to the inner side of the connecting cylinder (41).
3. The sand casting device for a bearing casting according to claim 1, characterized in that: A sliding hole (20) is formed on one side of the extension pipe (10). One end of the shunt pipe (9) extends into the extension pipe (10) through the sliding hole (20), and one end of the shunt pipe (9) is bent.
4. The sand casting device for a bearing casting according to claim 1, characterized in that: A dial rod (61) is connected to one side of the limiting ring (6). An adjustment hole corresponding to the dial rod (61) is formed on one side of the mounting frame (5).
5. The sand casting device for bearing castings according to claim 1, characterized in that: A plurality of guide bars (31) are arranged on the outer circle of the sand embryo mold (3). Sliding grooves corresponding to the guide bars (31) are formed in the inner circles of the mold shell (1) and the limiting ring (6).
6. The sand casting device for bearing castings according to claim 1, characterized in that: An inner insertion tube (18) is connected to the bottom end of the mold cover (2). A vibration motor (19) is connected to the inner side of the inner insertion tube (18). The bottom end of the inner insertion tube (18) extends into the transmission unit (4) and is connected with a vibration motor (19).
7. The sand casting device for bearing castings according to claim 1, characterized in that: The end of the through hole far away from the extension pipe (10) is connected and communicated with the main casting hole (7). A material gathering pipe is connected to the bottom end of the casting diversion frame (8).
8. The sand casting device for bearing castings according to claim 1, characterized in that: Guide holes are formed at both ends of the swing rod (13) and the linkage rod (14). A sliding bolt is connected to one side of the top end of the extension pipe (10) and one side of the swing rod (13), and the sliding bolt is slidably connected with the corresponding guide hole.
9. The sand casting device for bearing castings according to claim 6, characterized in that: A buffer frame is connected to one side of the inner wall of the inner insertion tube (18). The vibration motor (19) is fixedly arranged at the bottom end of the buffer frame. The outer circle of the inner insertion tube (18) is in fit with the transmission unit (4).