A vibrating shakeout device for sand casting

Abstract

The application discloses a vibrating sand dropping device for sand casting and relates to the technical field of vibrating screening; the vibrating sand dropping device comprises a supporting base, a vibrating screening mechanism, a distributing box and a driving mechanism; the vibrating screening mechanism comprises a supporting frame, a screening assembly and a baffle, the supporting frame is provided with an opening, the screening assembly is installed at the opening, an inlet for guiding materials into the distributing box is formed between the screening assembly and the two side edges of the opening, and the supporting frame is slidably provided with the baffle at the inlet; the driving mechanism comprises a main driving assembly, a first auxiliary driving assembly and a second auxiliary driving assembly; the distributing box comprises a shell and a rotary screen plate, and a discharging port is formed in the lower side of the rotary screen plate; the application can effectively improve the separation effect of the casting and the sand, the sand is completely separated, there is no residual sand on the surface of the casting, secondary manual cleaning is not needed, and the surface quality of the casting and the production efficiency are improved.

Description

Technical Field

[0001] This invention relates specifically to the field of vibrating screening technology, and more specifically to a vibrating sand removal device for sand casting. Background Technology

[0002] Sand casting is a widely used forming process in the field of machinery manufacturing. After the casting cools and solidifies, it needs to be quickly separated from the surrounding molding sand, i.e., sand removal. The separation effect directly affects the casting quality, molding sand recycling rate and production efficiency.

[0003] Existing vibrating sand removal equipment mostly adopts a single vibrating screen structure, which achieves preliminary separation of castings and molding sand through vibration. However, there are obvious technical defects in actual production, mainly including: during the sand removal process, the castings are transported mixed with a large amount of molding sand, and a single screening cannot achieve complete separation. Some fine sand still adheres to the surface of the castings or is mixed in the gaps between the castings; when the screen vibrates, the molding sand has no stepped discharge channel and moves along the same path as the castings throughout the process, resulting in a large accumulation of molding sand, which easily clogs the screen and reduces screening efficiency; large-volume castings and residual small-volume molding sand cannot be graded and processed, requiring secondary manual cleaning, which increases labor intensity, and the molding sand recovery has low purity and serious waste; the single screening structure has no linkage material control mechanism, and the opening and closing of the feed port is not synchronized with the screening action, which easily leads to problems such as molding sand splashing and casting jamming, affecting continuous production.

[0004] In summary, existing equipment is unable to achieve multi-stage, efficient, and thorough separation of castings and molding sand. Furthermore, the total amount of molding sand cannot be continuously reduced during the separation process, resulting in insufficient separation thoroughness and hindering the level of automated production in sand casting. Summary of the Invention

[0005] The purpose of this invention is to provide a vibratory sand removal device for sand casting, which solves the problems mentioned in the background art. It can effectively improve the separation effect of castings and molding sand, so that the molding sand is completely separated, there is no residual molding sand on the surface of the casting, no need for secondary manual cleaning, and improve the surface quality of castings and production efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A vibrating sand removal device for sand casting includes a support base, a vibrating screening mechanism, a material distribution box, and a driving mechanism; wherein:

[0008] The vibrating screening mechanism includes a support frame, a screening component, and a baffle. The support frame has an opening, the screening component is installed at the opening, and an inlet for guiding material into the distribution box is formed between the screening component and the two sides of the opening. The baffle is slidably installed on the support frame at the inlet.

[0009] The driving mechanism includes a main driving component, a first auxiliary driving component, and a second auxiliary driving component. The main driving component is used to control the movement of the screening component to separate large-volume and small-volume materials in the material. The first auxiliary driving component is used to drive the baffle away from the feed inlet when the screening component moves, so that the feed inlet opens.

[0010] The material distribution box includes a housing and a rotating screen plate. A discharge port is provided on one side of the housing below the rotating screen plate. The second auxiliary drive assembly is used to drive the rotating screen plate to rotate.

[0011] As a further aspect of the present invention, it also includes a device cover, the device cover including a top plate and a plurality of side plates surrounding the vibrating screening mechanism. One side of the side plate is detachably connected to the top plate, and the other side of the side plate is detachably fixedly connected to the support base. The support frame is fixedly connected to at least one side plate.

[0012] As a further embodiment of the present invention: the screening assembly includes a frame, two screens movably mounted on the frame, and an elastic connector connecting the two screens; the side of the frame away from the elastic connector is rotatably connected to the side plate; the main drive assembly includes a drive shaft, a cam, and a connecting frame, the cam is fixedly mounted on the drive shaft, the connecting frame is slidably connected to the support frame, and the connecting frame is movably connected to the side of the frame near the elastic connector.

[0013] As a further embodiment of the present invention: the main drive assembly further includes a drive motor, the main shaft of the drive motor is connected to the drive shaft via a synchronous belt drive; a rotating shaft is fixedly installed on the side of the frame away from the elastic connector, and the rotating shaft is rotatably connected to the front side plate and / or the rear side plate.

[0014] As a further embodiment of the present invention: the screen is connected to the frame by at least one vibration spring, and a vibration motor is installed on the screen.

[0015] As a further embodiment of the present invention: the first auxiliary drive assembly includes a first gear fixedly mounted on the rotating shaft and a first rack fixedly connected to the baffle, wherein the first gear meshes with the first rack.

[0016] As a further embodiment of the present invention: the rotating screen plate is rotatably installed inside the housing via a rotating shaft; the bottom of the housing has a semi-circular structure, and one end of the rotating screen plate is provided with an arc-shaped baffle plate, which is located near the discharge port.

[0017] As a further embodiment of the present invention: the second auxiliary drive assembly includes a pressing block fixedly connected to the connecting frame, a pressure block slidably mounted on the support base, and a second gear, the second gear being fixedly mounted on the rotating shaft; a second rack is fixedly mounted on the pressure block, the second rack meshing with the second gear.

[0018] As a further embodiment of the present invention: at least one rotating roller is rotatably mounted inside the housing on the upper side of the rotating screen plate.

[0019] As a further aspect of the present invention: a plurality of material collection components are installed on the support base, the material collection components including a first material collection box and a second material collection box.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention uses a main drive component to drive a screen to vibrate reciprocally, quickly stripping away most of the molding sand. The molding sand falls directly through the screen into the first collection box, achieving a significant initial reduction in volume. The unseparated castings and a small amount of residual molding sand enter the distribution box through the inlet, where a rotating screen plate performs a secondary screening. The molding sand is discharged and recycled through the outlet, while the castings are discharged through the outlet, completing the final separation of the castings and molding sand, leaving no residual fine sand. During the separation process, the molding sand is discharged in stages, and the total amount continuously decreases, effectively improving the separation effect between the castings and molding sand. This ensures thorough separation of the molding sand, leaving no residual molding sand on the surface of the castings, eliminating the need for secondary manual cleaning, improving the surface quality of the castings and increasing production efficiency. Furthermore, the molding sand is graded and recycled with high purity, allowing for direct recycling and reducing the cost of molding sand procurement and processing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a vibratory sand removal device for sand casting.

[0023] Figure 2 This is a top view of a vibratory sand-falling device used in sand casting.

[0024] Figure 3 This is a schematic diagram of the structure after the protective cover of the removal device in a vibratory sand removal device for sand casting.

[0025] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0026] Figure 5 for Figure 3 A magnified view of a portion of point B in the middle.

[0027] Figure 6 for Figure 3 A schematic diagram of the structure after removing one side of the screen.

[0028] Figure 7This is a schematic diagram of the material distribution box in a vibratory sand-falling device for sand casting.

[0029] In the diagram: 10-Support base, 11-First collection box, 12-Second collection box, 13-Drive motor, 20-Device cover, 21-Top plate, 211-Feed inlet, 22-Side plate, 30-Vibrating screening mechanism, 31-Support frame, 311-Opening, 32-Frame, 321-Rotating shaft, 322-First gear, 33-Screen, 34-Elastic connector, 35-Baffle, 351-First rack, 40-Distribution box, 41-Shell, 411-Discharge port, 412-Discharge port, 42-Rotating screen plate, 421-Baffle plate, 43-Rotating shaft, 44-Rotating roller; 50-Drive mechanism, 51-Drive shaft, 52-Cam, 53-Connecting frame, 531-Extrusion block, 532-Pressure block, 533-Second rack, 534-Second gear, 54-Synchronous belt. Detailed Implementation

[0030] 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 only some embodiments of the present invention, and not all embodiments. Based on the 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.

[0031] Please see Figures 1 to 7In this embodiment of the invention, a vibrating sand removal device for sand casting includes a support base 10, a vibrating screening mechanism 30 mounted on the support base 10, a material distribution box 40, and a drive mechanism 50. The material distribution box 40 is installed below the vibrating screening mechanism 30. The vibrating screening mechanism 30 includes a support frame 31, a screening component, and a baffle 35. The support frame 31 has an opening 311, the screening component is installed at the opening 311, and an inlet is formed between the screening component and the two side edges of the opening 311 to guide material into the material distribution box 40. The baffle 35 is slidably mounted on the support frame 31 at the inlet. The drive mechanism 50 includes a main drive component, a first auxiliary drive component, and a second auxiliary drive component. The main drive component is used to control the movement of the screening component. The material is separated into large and small volumes, with most of the small volume material being discharged after being screened by the screening component. The first auxiliary drive component drives the baffle 35 away from the feed inlet when the screening component moves, so that the feed inlet opens, allowing the large volume material and a small portion of the small volume material to fall into the distribution box 40 from the feed inlet. The distribution box 40 includes a shell 41 and a rotating screen plate 42. A discharge port 411 is provided on one side of the shell 41 below the rotating screen plate 42. The second auxiliary drive component drives the rotating screen plate 42 to rotate, so that the large volume material is discharged from the discharge port 411, achieving multi-stage separation of large and small volume materials. It should be noted that in this embodiment, the large volume material is a casting, and the small volume material is a sand mold used to prepare the sand mold that encloses the casting.

[0032] In the embodiments of this application, such as Figure 1 As shown, the device also includes a protective cover 20, which includes a top plate 21 and multiple side plates 22 surrounding the vibrating screening mechanism 30. One side of each side plate 22 is detachably and fixedly connected to the top plate 21, and the other side of each side plate 22 is detachably and fixedly connected to the support base 10. The support frame 31 is fixedly connected to at least one side plate 22. The side plate 22 can be divided into a front side plate, a rear side plate, a left side plate, and a right side plate. In addition, a feed inlet 211 is provided on the upper side of the top plate 21. The feed inlet 211 is used to add materials, namely sand molds containing castings, into the device.

[0033] In one embodiment of this application, the screening assembly includes a frame 32, two screens 33 movably mounted on the frame 32, and an elastic connector 34 connecting the two screens 33; the side of the frame 21 away from the elastic connector 34 is rotatably connected to the side plate 22; the main drive assembly includes a drive shaft 51, a cam 52, and a connecting frame 53, the cam 52 being fixedly mounted on the drive shaft 51, the connecting frame 53 being slidably connected to the support frame 31, and the connecting frame 53 being movably connected to the side of the frame 21 near the elastic connector 34; the cam 52 is disposed inside the connecting frame 53, such as... Figure 4 As shown, when the drive shaft 51 is rotating, the cam 52 intermittently presses the bottom of the connecting frame 53, thereby driving the connecting frame 53 to slide downward along the support frame 31 during the pressing process of the cam 52. This causes the support frame 31 to control the frame 32 and the screen 33 to rotate toward the support base 10. At this time, the elastic connector 34 is in a compressed state. When the cam 52 moves away from the connecting frame 53, under the elastic force of the elastic connector 34, the frame 32 and the screen 33 rotate away from the support base 10. This reciprocating motion drives the screening assembly to vibrate, causing the casting and molding sand to separate quickly.

[0034] As a further embodiment of this application, the main drive assembly further includes a drive motor 13, the main shaft of which is connected to the drive shaft 51 via a synchronous belt drive. Furthermore, as... Figure 5 As shown, a rotating shaft 321 is fixedly installed on the side of the frame 31 away from the elastic connector 34, and the rotating shaft 321 is rotatably connected to the front side plate and / or the rear side plate.

[0035] As an optional implementation of this application, in order to improve the screening effect of the screening component on castings and molding sand, and to allow the molding sand to quickly fall off the castings, the screen 33 is connected to the frame 32 through at least one vibration spring. A vibration motor is installed on the screen 33; it is understood that the vibration motor is used to control the vibration of the screen 33. It should also be noted that, since a top plate 21 is provided above the screening component, during the reciprocating vibration of the screening component driven by the main drive component, the castings and molding sand on the screening component collide with the top plate 21, thereby further accelerating the separation effect of the castings and molding sand.

[0036] As one implementation method of this application, such as Figure 3 as well as Figure 5As shown, the first auxiliary drive assembly includes a first gear 322 fixedly mounted on the rotating shaft 321 and a first rack 351 fixedly connected to the baffle 35. The first gear 322 meshes with the first rack 351. It can be understood that when the main drive assembly drives the frame 32 and screen 33 in the screening assembly to rotate, the frame 32 controls the first gear 322 to rotate through the rotating shaft 321, so that the first gear 322 drives the first rack 351 and the baffle 35 fixedly connected to the first rack 351 to move away from the feed inlet, thereby causing the casting and a small portion of molding sand to fall from the feed inlet into the distribution box 40.

[0037] Furthermore, in this embodiment, a protective shell is installed on the outer side of the baffle 35. The protective shell is fixedly connected to the baffle 35 and is used to protect the first gear 33 and the first rack 351.

[0038] In the embodiments of this application, such as Figure 7 As shown, the rotating screen plate 42 is rotatably installed inside the housing 41 via a rotating shaft 43; the bottom of the housing 41 has a semi-circular structure, and one end of the rotating screen plate 42 is provided with an arc-shaped baffle plate 421. The baffle plate 421 is located close to the discharge port 411. In the initial state, the baffle plate 421 blocks the discharge port 411. When the rotating screen plate 42 rotates, the baffle plate 421 deflects away from the discharge port 411, and the discharge port 411 opens, thereby facilitating the discharge of the casting.

[0039] As one implementation method of this application, such as Figures 4 to 5 As shown, the second auxiliary drive assembly includes a pressing block 531 fixedly connected to the connecting frame 53, a pressure receiving block 532 slidably mounted on the support base 10, and a second gear 534. The second gear 534 is fixedly mounted on the rotating shaft 43. A second rack 533 is fixedly mounted on the pressure receiving block 532, and the second rack 533 meshes with the second gear 534. It can be understood that when the connecting frame 53 moves downward under the pressure of the cam 52, the pressing block 531 pushes the pressure receiving block 532 and the second rack 533 to move, causing the second rack 533 to drive the second gear 534 to rotate, thereby controlling the rotating shaft 43 to drive the rotating screen plate 42 to deflect, causing the rotating screen plate 42 to deviate from the discharge port 411.

[0040] Furthermore, in this embodiment of the application, the bottom of the shell 41 is provided with a plurality of discharge ports 412, which are used to discharge small volume materials, namely molding sand.

[0041] As an optional embodiment of this application, at least one rotating roller 44 is rotatably mounted inside the housing 41 on the upper side of the rotating screen plate 42. The rotating roller 44 is used to promote the flow of molding sand inside the housing 41 and prevent the molding sand from accumulating inside the housing 41.

[0042] In addition, it should be noted that a number of material collection components are installed on the support base 10. The material collection components include a first material collection box 11 and a second material collection box 12. The first material collection box 11 is used to collect molding sand after being screened by the screen 33, and the second material collection box 12 is used to collect castings discharged from the material distribution box 40.

[0043] In summary, this invention uses a main drive component to drive a screen to vibrate reciprocally, quickly stripping away most of the molding sand. The molding sand falls directly through the screen into the first collection box, achieving a significant initial reduction in volume. The unseparated castings and a small amount of residual molding sand enter the distribution box through the inlet, where a rotating screen plate performs secondary screening. The molding sand is discharged and recycled through the outlet, while the castings are discharged through the outlet, completing the final separation of the castings and molding sand, leaving no residual fine sand. During the separation process, the molding sand is discharged in stages, and the total amount continuously decreases, effectively improving the separation effect between the castings and molding sand. This ensures thorough separation of the molding sand, leaving no residual molding sand on the surface of the castings, eliminating the need for secondary manual cleaning, improving the surface quality of the castings and increasing production efficiency. Furthermore, the molding sand is graded and recycled with high purity, allowing for direct recycling and reducing the cost of molding sand procurement and processing.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vibratory sand removal device for sand casting, characterized in that, It includes a support base (10), a vibrating screening mechanism (30), a material distribution box (40), and a drive mechanism (50); wherein: The vibrating screening mechanism (30) includes a support frame (31), a screening component and a baffle (35). The support frame (31) has an opening (311). The screening component is installed at the opening (311), and an inlet is formed between the screening component and the two sides of the opening (311) to guide the material into the distribution box (40). The baffle (35) is slidably installed on the support frame (31) at the inlet. The drive mechanism (50) includes a main drive assembly, a first auxiliary drive assembly, and a second auxiliary drive assembly. The main drive assembly is used to control the movement of the screening assembly to separate large-volume materials from small-volume materials. The first auxiliary drive assembly is used to drive the baffle (35) away from the feed inlet when the screening assembly moves, so that the feed inlet opens. The material distribution box (40) includes a housing (41) and a rotating screen plate (42). A discharge port (411) is provided on one side of the housing (41) below the rotating screen plate (42). The second auxiliary drive assembly is used to drive the rotating screen plate (42) to rotate.

2. The vibratory sand removal device for sand casting according to claim 1, characterized in that, It also includes a device cover (20), which includes a top plate (21) and multiple side plates (22) surrounding the vibrating screening mechanism (30). One side of the side plate (22) is detachably connected to the top plate (21), and the other side of the side plate (22) is detachably fixedly connected to the support base (10). The support frame (31) is fixedly connected to at least one side plate (22).

3. The vibratory sand removal device for sand casting according to claim 1, characterized in that, The screening assembly includes a frame (32), two screens (33) movably mounted on the frame (32), and an elastic connector (34) connecting the two screens (33); the side of the frame (21) away from the elastic connector (34) is rotatably connected to the side plate (22); the main drive assembly includes a drive shaft (51), a cam (52), and a connecting frame (53), the cam (52) is fixedly mounted on the drive shaft (51), the connecting frame (53) is slidably connected to the support frame (31), and the connecting frame (53) is movably connected to the side of the frame (21) near the elastic connector (34).

4. The vibratory sand removal device for sand casting according to claim 3, characterized in that, The main drive assembly also includes a drive motor (13), the main shaft of which is connected to the drive shaft (51) via a synchronous belt drive; a rotating shaft (321) is fixedly installed on the side of the frame (31) away from the elastic connector (34), and the rotating shaft (321) is rotatably connected to the front side plate and / or the rear side plate.

5. The vibratory sand removal device for sand casting according to claim 4, characterized in that, The screen (33) is connected to the frame (32) by at least one vibration spring, and a vibration motor is installed on the screen (33).

6. The vibratory sand removal device for sand casting according to claim 5, characterized in that, The first auxiliary drive assembly includes a first gear (322) fixedly mounted on the rotating shaft (321) and a first rack (351) fixedly connected to the baffle (35), wherein the first gear (322) meshes with the first rack (351).

7. The vibratory sand removal device for sand casting according to claim 6, characterized in that, The rotating screen plate (42) is rotatably installed inside the housing (41) via a rotating shaft (43); the bottom of the housing (41) is a semi-circular structure, and one end of the rotating screen plate (42) is provided with an arc-shaped baffle plate (421), which is located near the discharge port (411).

8. The vibratory sand removal device for sand casting according to claim 7, characterized in that, The second auxiliary drive assembly includes a pressing block (531) fixedly connected to the connecting frame (53), a pressure block (532) slidably mounted on the support base (10), and a second gear (534). The second gear (534) is fixedly mounted on the rotating shaft (43). A second rack (533) is fixedly mounted on the pressure block (532), and the second rack (533) meshes with the second gear (534).

9. The vibratory sand removal device for sand casting according to claim 1, characterized in that, At least one rotating roller (44) is rotatably mounted inside the housing (41) on the upper side of the rotating screen plate (42).

10. The vibratory sand removal device for sand casting according to claim 1, characterized in that, The support base (10) is equipped with several material collection components, including a first material collection box (11) and a second material collection box (12).

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