Turbocharger shell sand box with enclasping protection function
By designing a double-layer box structure and vibration components for the turbocharger housing sand box, the problem of uneven distribution of molding sand in turbocharger housing casting was solved, achieving uniform distribution of molding sand and stability of casting quality, and reducing production costs and reliance on experience.
Patent Information
- Application Number
- CN202511868114.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-02-24
AI Technical Summary
In the current technology for casting turbocharger housings, the vertical vibration mechanism has insufficient horizontal filling capacity of the molding sand, making it difficult to push the molding sand into the side of deep holes or grooves. This results in high production costs, high process complexity, high dependence on experience, and poor versatility.
A turbocharger housing sand box with clamping and protection function was designed. It adopts a double-layer box structure and combines bottom and side vibrators. The bottom and side vibrators are driven by hydraulic cylinders to achieve vertical and horizontal vibration. The cooperation of connecting springs and spherical protrusions ensures uniform distribution of molding sand.
It achieves uniform distribution of molding sand during the casting process, reduces reliance on experience, lowers production costs, improves the versatility and automation of the process, and avoids problems such as uneven casting dimensions and deformation.
Smart Images
Figure CN121551545A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of casting technology, and more specifically to a turbocharger housing sand box with clamping and protective functions. Background Technology
[0002] Lost foam casting, also known as solid foam casting or foam mold casting, is a precision casting method in which a model made of foam plastic is coated with refractory paint and dried, then embedded in dry quartz sand and vibrated to create a shape. Under negative pressure, the model is poured in, causing it to instantly vaporize and disappear, replaced by metal. The liquid metal occupies the model's position, solidifies, and cools to form a casting, ultimately obtaining a casting that perfectly matches the shape of the model. Lost foam casting has a wide range of applications in modern industry, especially in the automotive, machinery, and metallurgical industries where it has significant advantages.
[0003] When dealing with complex models like turbocharger housings, conventional vertical vibration mechanisms vibrate the sand box to distribute the molding sand evenly inside. While vertical vibration can cause the molding sand to settle and compact vertically, it has weak horizontal filling capabilities, making it difficult to push the molding sand to the sides of horizontal deep holes or grooves. Therefore, existing technologies typically employ a "low-to-high" strategy: first, large-amplitude, low-frequency vibration is used to induce a wide-range flow of sand particles, filling large spaces; then, small-amplitude, high-frequency vibration is used for fine compaction. This "variable frequency and amplitude" strategy requires extensive experimentation for each new model to find the optimal parameter combination (amplitude, frequency, and duration of each stage). It has poor versatility, relies heavily on the experience of process engineers, and is difficult to automate and intelligentize, while significantly increasing production costs and process complexity.
[0004] In view of the above, the present invention designs a turbocharger housing sand box with clamping protection function, which solves the above technical problems. Summary of the Invention
[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a turbocharger housing sand box with a clamping and protective function, which solves the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a turbocharger housing sand box with clamping and protective function, comprising a base, the base having a U-shaped structure, and a sand box body being provided at the bottom of the U-shaped base. A limiting groove is provided at the bottom of the sand box body, and the sand box body cooperates with a fixed slider provided on the base through the limiting groove. The sand box body is a double-layered box, consisting of an outer box and an inner box. A first hydraulic cylinder is provided in the middle of the base, and the output end of the first hydraulic cylinder is connected to one end of the sand box body. A second hydraulic cylinder is vertically downwards provided at the top of the base, and the output end of the second hydraulic cylinder is connected to a sealing cover plate. For sealing the sand box body, the device further includes: a vibration assembly, which includes a bottom vibrator, a transmission component, and a side vibrator; the bottom vibrator is disposed between the outer and inner boxes and is fixedly connected to the inner box, and the bottom vibrator drives the inner box to move up and down reciprocally through a drive device; the transmission component is disposed on both sides of the bottom vibrator, and the bottom vibrator drives the transmission component to move synchronously; the side vibrators are disposed on the sides of the outer and inner boxes and are connected to the transmission component, and the movement of the bottom vibrator drives the side vibrators to vibrate the inner box through the transmission component, so that the molding sand can be evenly distributed in the inner box.
[0007] Preferably, the bottom of the inner box is provided with a plurality of fixing pins, and the fixing pins are conical in shape, and the fixing pins are used to fix the model.
[0008] Preferably, the inner box and the outer box are connected by connecting springs, and the connecting springs are located at the four corners of the inner box. When the bottom vibrating component vibrates the inner box, the connecting springs intensify the flow of molding sand.
[0009] Preferably, the inner box has a protruding end at the bottom and the outer box has a fixed end. The fixed end of the outer box has a moving groove. The protruding end of the inner box is slidably connected to the moving groove. The bottom vibrating element vibrates the molding sand inside the inner box. The inner box shakes through the connecting spring. The protruding end of the inner box moves left and right and up and down in the moving groove opened at the fixed end of the outer box.
[0010] Preferably, the bottom vibrating component includes a fixed block, a limiting frame, a return spring, a drive shaft, a crank, a sliding block, a push rod, and a first control spring; the fixed block is disposed between the inner and outer housings, with one end of the fixed block fixedly connected to the inner wall of the outer housing, and an installation cavity is formed inside the fixed block; three sets of limiting frames are provided, and the three sets of limiting frames are equidistantly disposed above the fixed block, with the middle limiting frame communicating with the installation cavity, and the remaining two limiting frames containing return springs, one end of which is connected to the bottom surface of the inner housing, and the other end of which is connected to the bottom of the limiting frame; the drive shaft is rotatably disposed through the installation cavity, and a crank is rotatably disposed in the middle of the drive shaft; the sliding block is disposed in the limiting frame in the middle of the fixed block, and the middle of the sliding block is rotatably connected to the crank, and a sliding cavity is formed inside the sliding block; the push rod is connected to the bottom of the inner housing through the sliding cavity, and a first control spring is sleeved on the push rod, with both ends of the first control spring fixedly connected to both ends of the installation cavity.
[0011] Preferably, the transmission component includes a drive wheel, a transmission belt, and a driven wheel. The drive wheel is fixedly arranged on both sides of the drive shaft, and the driven wheel is arranged above the drive wheel. The driven wheel is located in the middle of the inner housing, and the drive wheel and the driven wheel are connected by the transmission belt.
[0012] Preferably, the side vibration component includes a mounting plate, spherical protrusions, a fixed shaft, an impact block, and a second control spring; the mounting plate is coaxially disposed on one side of the driven wheel, and multiple spherical protrusions are provided on the mounting plate; the fixed shaft is disposed above the mounting plate and is fixedly connected to the inner wall of the outer box, and an impact block is slidably disposed on the fixed shaft, and one end of the impact block is fixedly connected to the inner wall of the outer box through the second control spring. In the initial state, the mounting plate and the impact block are in contact.
[0013] Preferably, the spherical protrusions on the two mounting plates are staggered. When the spherical protrusions on one mounting plate push the impact block to vibrate the inner box, the spherical protrusions on the other mounting plate push the impact block to vibrate the inner box.
[0014] The beneficial effects of this invention are as follows: This invention provides a turbocharger housing sand box with a clamping and protective function. The device uses a drive unit to drive a bottom vibrating component to vertically vibrate the inner housing. Since the inner and outer housings are connected by multiple connecting springs, the connecting springs sway as the inner housing moves vertically, causing a slight left-right movement of the inner housing. This ensures uniform distribution of the molding sand within the inner housing. Simultaneously, the vertical vibration compacts the molding sand within the housing, preventing it from becoming too loose and causing the cast parts to be oversized, unevenly thickened, or deformed. In some cases, the material may even be scrapped. As the bottom vibrating component moves, it drives the side vibrating component to impact the inner wall of the inner casing through the transmission component. Because the spherical protrusions on the two mounting plates are installed in different positions, when the spherical protrusion on one mounting plate impacts the inner casing, the spherical protrusion on the other mounting plate will not impact the inner casing. This avoids the inner casing being impacted simultaneously, preventing the molding sand from moving left and right. In turn, the molding sand is evenly distributed in the inner casing through vertical and horizontal vibration. This method can be used for different types of turbocharger housings without the need for different processes, thus reducing the overall cost. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0016] Figure 2 This is a cross-sectional view of the overall structure of the present invention;
[0017] Figure 3 This is a cross-sectional view of the overall structure of the inner and outer casings of the present invention.
[0018] Figure 4 This is a cross-sectional view of the overall structure of the vibration assembly of the present invention;
[0019] Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle;
[0020] Figure 6 For the present invention Figure 4 A magnified view of a section at point B in the middle;
[0021] Figure 7 This is a partial view of the overall structure of the transmission component of the present invention;
[0022] Figure 8 This is a top view of the overall structure of the inner box of the present invention.
[0023] Figure label:
[0024] 1. Base; 11. Fixed slider; 12. Hydraulic cylinder No. 1; 13. Hydraulic cylinder No. 2; 131. Sealing cover plate; 2. Sand box body; 21. Limiting slide groove; 22. Outer box body; 221. Fixed end; 222. Moving groove; 23. Inner box body; 231. Extended end; 232. Connecting spring; 3. Vibration assembly; 31. Bottom vibrating component; 311. Fixing block; 3111. Mounting cavity; 312. Limiting frame; 31 3. Return spring; 314. Drive shaft; 315. Crank; 316. Sliding block; 3161. Sliding cavity; 317. Push rod; 318. Control spring No. 1; 32. Transmission component; 321. Drive wheel; 322. Transmission belt; 323. Driven wheel; 33. Side vibrating component; 331. Mounting plate; 332. Spherical protrusion; 333. Fixed shaft; 334. Impact block; 335. Control spring No. 2; 4. Fixing pin; Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] refer to Figures 1 to 8As shown, a turbocharger housing sand box with clamping protection function includes a base 1, which has a U-shaped structure. A sand box body 2 is mounted on the bottom of the U-shaped base 1. A limiting groove 21 is formed at the bottom of the sand box body 2, and the sand box body 2 cooperates with a fixed slider 11 mounted on the base 1 through the limiting groove 21. The sand box body 2 is a double-layered box, consisting of an outer box 22 and an inner box 23. A first hydraulic cylinder 12 is mounted in the middle of the base 1, and its output end is connected to one end of the sand box body 2. A second hydraulic cylinder 13 is vertically mounted on the top of the base 1, and its output end is connected to a sealing cover plate 131 for sealing the sand box body 2. The device also includes a vibration... Component 3, the vibration component 3 includes a bottom vibrator 31, a transmission component 32, and a side vibrator 33; the bottom vibrator 31 is disposed between the outer box 22 and the inner box 23, and the bottom vibrator 31 is fixedly connected to the inner box 23, and the bottom vibrator 31 drives the inner box 23 to move up and down reciprocally through a drive device; the transmission component 32 is disposed on both sides of the bottom vibrator 31, and the bottom vibrator 31 drives the transmission component 32 to move synchronously; the side vibrator 33 is disposed on the side of the outer box 22 and the inner box 23, and the side vibrator 33 is connected to the transmission component 32, and the movement of the bottom vibrator 31 drives the side vibrator 33 to vibrate the inner box 23 through the transmission component 32, so that the molding sand can be evenly distributed in the inner box 23.
[0027] Specifically, the bottom of the inner box 23 is provided with multiple fixing pins 4, and the fixing pins 4 are conical structures. The fixing pins 4 are used to fix the model.
[0028] Specifically, the inner box 23 and the outer box 22 are connected by a connecting spring 232, and the connecting spring 232 is located at the four corners of the inner box 23. When the bottom vibrating element 31 vibrates the inner box, the connecting spring 232 intensifies the flow of molding sand.
[0029] Specifically, the inner box 23 has an extended end 231 at its bottom, and the outer box 22 has a fixed end 221. The fixed end 221 of the outer box 22 has a moving groove 222. The extended end 231 of the inner box 23 is slidably connected to the moving groove 222. The bottom vibrating element 31 vibrates the molding sand inside the inner box 23, and the inner box 23 shakes through the connecting spring 232. The extended end 231 of the inner box 23 moves left and right and up and down in the moving groove 222 opened in the fixed end 221 of the outer box 22.
[0030] Specifically, the bottom vibrating component 31 includes a fixed block 311, a limiting frame 312, a return spring 313, a drive shaft 314, a crank 315, a sliding block 316, a push rod 317, and a first control spring 318. The fixed block 311 is located between the inner housing 23 and the outer housing 22, and one end of the fixed block 311 is fixedly connected to the inner wall of the outer housing 22. An installation cavity 3111 is provided inside the fixed block 311. Three sets of limiting frames 312 are provided, and the three sets of limiting frames 312 are equidistantly arranged above the fixed block 311. The middle limiting frame 312 communicates with the installation cavity 3111, and the remaining two limiting frames 312 are provided with return springs 313. One end of the spring 313 is connected to the bottom surface of the inner housing 23, and the other end of the spring 313 is connected to the bottom of the limiting frame 312. The drive shaft 314 is rotatably mounted through the mounting cavity 3111, and a crank 315 is rotatably mounted in the middle of the drive shaft 314. The sliding block 316 is mounted in the limiting frame 312 in the middle of the fixed block 311, and the middle of the sliding block 316 is rotatably connected to the crank 315. A sliding cavity 3161 is opened inside the sliding block 316. The push rod 317 is connected to the bottom of the inner housing 23 through the sliding cavity 3161. A first control spring 318 is sleeved on the push rod 317, and the two ends of the first control spring 318 are fixedly connected to the two ends of the mounting cavity 3111 respectively.
[0031] Specifically, the transmission component 32 includes a drive wheel 321, a transmission belt 322, and a driven wheel 323. The drive wheel 321 is fixedly arranged on both sides of the drive shaft 314, and the driven wheel 323 is arranged above the drive wheel 321. The driven wheel 323 is located in the middle of the inner housing 23, and the drive wheel 321 and the driven wheel 323 are connected by the transmission belt 322.
[0032] Specifically, the side vibration component 33 includes a mounting plate 331, spherical protrusions 332, a fixed shaft 333, an impact block 334, and a second control spring 335. The mounting plate 331 is coaxially disposed on one side of the driven wheel 323, and multiple spherical protrusions 332 are provided on the mounting plate 331. The fixed shaft 333 is disposed above the mounting plate 331 and is fixedly connected to the inner wall of the outer housing 22. The impact block 334 is slidably disposed on the fixed shaft 333, and one end of the impact block 334 is fixedly connected to the inner wall of the outer housing 22 through the second control spring 335. In the initial state, the mounting plate 331 and the impact block 334 are in contact.
[0033] Specifically, the spherical protrusions 332 on the two mounting plates 331 are staggered. When the spherical protrusions 332 on one side of the mounting plate 331 push the impact block 334 to vibrate the inner box 23, the spherical protrusions 332 on the other side of the mounting plate 331 push the impact block 334 to vibrate the inner box 23.
[0034] Working principle and process: Before casting begins, the operator first designs a foam plastic model corresponding to the workpiece to be cast. Then, the model is placed inside the inner box 23 using multiple fixing pins 4. Molding sand is then poured into the inner box 23. To ensure even distribution of the molding sand within the inner box 23, a drive device rotates the drive shaft 314. The rotation of the drive shaft 314 causes the central crank 315 to rotate, which in turn causes the sliding block 316 to move within the limit frame 312. When the sliding block 316 moves upward, it drives the push rod 317 to move upward. At this time, the inner box... The box 23 will move upward. When the sliding block 316 moves downward, the sliding block 316 drives the push rod 317 to move downward. At this time, the inner box 23 will move downward. By setting a return spring 313 in the limit frame 312 on both sides of the fixed block 311, and setting a first control spring 318 in the mounting cavity 3111, when the inner box 23 moves upward, the first control spring 318 will be compressed, and the return spring 313 will be stretched. When the inner box 23 moves downward, the first control spring 318 and the return spring 313 will intensify the vertical movement of the inner box 23, thereby accelerating the flow of molding sand in the inner box 23.
[0035] The rotation of the rotating shaft drives the active wheels 321 on both sides to rotate. The rotation of the active wheels 321 drives the driven wheels 323 to move synchronously through the transmission belt 322. Since there is a mounting plate 331 on one side of the driven wheel 323, and there are spherical protrusions 332 on the mounting plate 331, the rotation of the mounting plate 331 drives the spherical protrusions 332 to push the impact block 334 to move towards the inner wall of the inner box 23. Since there is a second control spring 335 on one side of the impact block 334, when the impact block 334 moves towards the inner box 23, it stretches the second control spring 335. When the spherical protrusions 332 do not fit with the impact block 334, the impact block 334 is reset by the second control spring 335. Through the spherical protrusions 332 arranged in a staggered manner on the mounting plates 331 on both sides, the inner box 23 can swing left and right, so that the molding sand can flow left and right inside the inner box 23.
[0036] After vibration, the inner box 23 and the outer box 22 are sealed by the second hydraulic cylinder 13 to ensure that the box will not explode during the pouring process. After pouring, the sand box body 2 can be moved on the base 1 by the first hydraulic cylinder 12. When the sand box body 2 moves to one end of the base 1, the sand box body 2 can rotate to pour out the workpiece.
[0037] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the scope of its essence and protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.
Claims
1. A turbocharger housing sand box with clamping and protective function, comprising a base (1), characterized in that, The base (1) has a U-shaped structure, and a sand box body (2) is provided at the bottom of the U-shaped base (1). The bottom of the sand box body (2) is provided with a limiting groove (21), and the sand box body (2) cooperates with the fixed slider (11) provided on the base (1) through the limiting groove (21). The sand box body (2) is a double-layer box, and the sand box body (2) is divided into an outer box (22) and an inner box (23). A hydraulic cylinder (12) is provided in the middle of the base (1). The output end of the first hydraulic cylinder (12) is connected to one end of the sand box body (2). The second hydraulic cylinder (13) is vertically downward on the top of the base (1). The output end of the second hydraulic cylinder (13) is connected to a sealing cover plate (131). The sealing cover plate (131) is used to seal the sand box body (2). The sand box also includes a vibration assembly (3). The vibration assembly (3) includes a bottom vibration component (31), a transmission component (32), and a side vibration component (33). The bottom vibrating element (31) is set between the outer box (22) and the inner box (23), and the bottom vibrating element (31) is fixedly connected to the inner box (23). The bottom vibrating element (31) drives the inner box (23) to move up and down reciprocally through the driving device. The transmission component (32) is arranged on both sides of the bottom vibrating component (31), and the bottom vibrating component (31) drives the transmission component (32) to move synchronously; The side vibrator (33) is set on the side of the outer box (22) and the inner box (23), and the side vibrator (33) is connected to the transmission component (32). The bottom vibrator (31) moves through the transmission component (32) to drive the side vibrator (33) to vibrate the inner box (23), so that the molding sand can be evenly distributed in the inner box (23).
2. A turbocharger housing sand box with clamping and protective function according to claim 1, characterized in that: It also includes fixing pins (4). Multiple fixing pins (4) are provided at the bottom of the inner box (23), and the fixing pins (4) are conical structures. The fixing pins (4) are used to fix the model.
3. A turbocharger housing sand box with clamping and protective function according to claim 1, characterized in that: The inner box (23) and the outer box (22) are connected by a connecting spring (232), and the connecting spring (232) is located at the four corners of the inner box (23). When the bottom vibrating element (31) vibrates the inner box, the connecting spring (232) intensifies the flow of molding sand.
4. A turbocharger housing sand box with clamping protection function according to claim 3, characterized in that: The inner box (23) has an extended end (231) at its bottom and the outer box (22) has a fixed end (221). The fixed end (221) of the outer box (22) has a moving groove (222). The extended end (231) of the inner box (23) is slidably connected to the moving groove (222). The bottom vibrating element (31) vibrates the molding sand inside the inner box (23). The inner box (23) shakes through the connecting spring (232). The extended end (231) of the inner box (23) moves left and right and up and down in the moving groove (222) opened on the fixed end (221) of the outer box (22).
5. A turbocharger housing sand box with clamping protection function according to claim 1, characterized in that: The bottom vibrating component (31) includes a fixed block (311), a limiting frame (312), a reset spring (313), a drive shaft (314), a crank (315), a sliding block (316), a push rod (317), and a first control spring (318). A fixing block (311) is set between the inner box (23) and the outer box (22), and one end of the fixing block (311) is fixedly connected to the inner wall of the outer box (22). An installation cavity (3111) is opened in the fixing block (311). The limiting frame (312) is provided in three sets, and the three sets of limiting frames (312) are equidistantly arranged above the fixed block (311). The middle limiting frame (312) is connected to the mounting cavity (3111), and the remaining two limiting frames (312) are provided with reset springs (313). One end of the reset spring (313) is connected to the bottom surface of the inner box (23), and the other end of the reset spring (313) is connected to the bottom of the limiting frame (312). A drive shaft (314) is rotatably disposed through the mounting cavity (3111), and a crank (315) is rotatably disposed in the middle of the drive shaft (314). A sliding block (316) is provided with a limiting frame (312) in the middle of a fixed block (311). The middle part of the sliding block (316) is rotatably connected to a crank (315). A sliding cavity (3161) is provided inside the sliding block (316). The push rod (317) passes through the sliding cavity (3161) and is connected to the bottom of the inner box (23). A first control spring (318) is sleeved on the push rod (317). The two ends of the first control spring (318) are fixedly connected to the two ends of the mounting cavity (3111).
6. A turbocharger housing sand box with clamping protection function according to claim 1, characterized in that: The transmission component (32) includes a drive wheel (321), a transmission belt (322), and a driven wheel (323). The drive wheel (321) is fixedly arranged on both sides of the drive shaft (314), and the driven wheel (323) is arranged above the drive wheel (321). The driven wheel (323) is located in the middle of the inner box (23). The drive wheel (321) and the driven wheel (323) are connected by the transmission belt (322).
7. A turbocharger housing sand box with clamping protection function according to claim 1, characterized in that: The side vibration component (33) includes a mounting plate (331), a spherical protrusion (332), a fixed shaft (333), an impact block (334), and a second control spring (335). Mounting plate (331) is coaxially disposed on one side of driven wheel (323), and multiple spherical protrusions (332) are provided on mounting plate (331). A fixed shaft (333) is set above the mounting plate (331) and is fixedly connected to the inner wall of the outer box (22). An impact block (334) is slidably arranged on the fixed shaft (333), and one end of the impact block (334) is fixedly connected to the inner wall of the outer box (22) through a second control spring (335). In the initial state, the mounting plate (331) and the impact block (334) are in contact.
8. A turbocharger housing sand box with clamping protection function according to claim 7, characterized in that: The spherical protrusions (332) on the mounting plates (331) on both sides are staggered. When the spherical protrusions (332) on one side of the mounting plate (331) push the impact block (334) to vibrate the inner box (23), the spherical protrusions (332) on the other side of the mounting plate (331) push the impact block (334) to vibrate the inner box (23).