Device for rapidly separating casting from molding sand

Abstract

The utility model relates to the technical field of casting production equipment, and discloses a rapid casting and molding sand separation device which comprises an equipment base, a support is fixedly connected to the top surface of the equipment base, a molding sand box is fixedly connected to the inner side wall of the support, and a demolding assembly is arranged in the molding sand box. A support is arranged on the upper portion of the equipment base, a buffer plate is hinged to the inner side wall of the support, a separation box is fixedly connected to the top surface of the equipment base, and a vibration crushing assembly is arranged in the separation box. Efficient separation of molding sand and castings is achieved, and the problems that during manual operation, a molding sand box is damaged, and the surfaces of the castings are scratched are solved; and meanwhile, through cooperative operation of reciprocating chiseling of the crushing cone and reciprocating vibration of the screening plate, chiseling and crushing treatment is conducted on solidified molding sand outside the casting, the solidified molding sand is gradually crushed and loosened and thoroughly separated from the surface of the casting, and crushed fine loose sand blocks can be collected through reciprocating vibration of the screening plate.

Description

Technical Field

[0001] This utility model relates to the field of casting production equipment technology, specifically a device for rapid separation of castings and molding sand. Background Technology

[0002] In the casting production field, after the casting is formed, it is necessary to completely separate it from the molding sand that surrounds it. This is a core and critical process to ensure the quality of the casting and the smooth progress of subsequent processing steps. After the casting is formed and cooled in the molding sand mold, a large amount of solidified molding sand often adheres to its surface and the inside of the cavity. If this molding sand is not completely removed, it will not only affect the dimensional accuracy and surface roughness of the casting, but also lead to accelerated tool wear and increased machining errors in subsequent machining and heat treatment processes. In severe cases, it can directly lead to the scrapping of the casting.

[0003] Traditional separation devices rely heavily on manual operation. Operators need to break the solidified structure of the molding sand by manually hammering and prying to separate the molding sand from the casting and the molding sand box. Manual hammering is not only extremely labor-intensive, but also difficult to control the force precisely, which can easily lead to deformation and damage of the molding sand box. At the same time, the broken molding sand cannot be quickly graded, screened and collected, resulting in serious sand scattering. This not only increases the workload of subsequent cleaning, but also leads to a low recycling rate of molding sand resources, resulting in waste.

[0004] Therefore, we propose a device for rapid separation of castings and molding sand to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a device for rapid separation of castings and molding sand, in order to solve the problems mentioned in the background art, such as unstable force of manual tapping of the molding sand box, high labor intensity, resulting in damage to the molding sand box and inability to classify and recycle the molding sand after separation.

[0006] This utility model provides the following technical solution: a device for rapid separation of castings and molding sand, including a device base, a support fixedly connected to the top surface of the device base, a molding sand box fixedly connected to the inner side wall of the support, a demolding component provided inside the molding sand box, a buffer plate hinged to the inner side wall of the support, a separation box fixedly connected to the top surface of the device base, and a vibration crushing component provided inside the separation box.

[0007] Preferably, the demolding assembly includes a fixing block fixedly connected to the side wall of the molding sand box, a motor fixedly connected to the side wall of the fixing block, a rotating rod fixedly connected to the output end of the motor, the rotating rod being rotatably connected to the fixing block, a baffle fixedly connected to the rotating rod, and a worm gear fixedly sleeved on the rotating rod.

[0008] Preferably, a support shaft is fixedly connected to the side wall of the molding sand box. The support shaft is hollow inside. A worm gear is rotatably connected to the top surface of the support shaft. The worm gear meshes with a worm. A threaded rod is threadedly connected to the worm gear. The threaded rod is slidably connected to the support shaft. A connecting rod is fixedly connected to the bottom end of the threaded rod. The connecting rod is slidably connected to the molding sand box and the support shaft. A cross plate is fixedly connected to the end of the connecting rod away from the threaded rod. The cross plate is slidably connected to the molding sand box.

[0009] Preferably, the vibration crushing assembly includes a hydraulic rod fixedly connected to the side wall of the separation box, an output end of the hydraulic rod fixedly connected to an installation plate, a plurality of crushing cones fixedly connected to the side wall of the installation plate, the crushing cones being slidably connected to the separation box, an L-shaped rod fixedly connected to the bottom end of the installation plate, a rack fixedly connected to the side wall of the L-shaped rod, and the rack being slidably connected to the separation box.

[0010] Preferably, a hollow plate is fixedly connected to the bottom of the separation box, the rack is slidably connected to the hollow plate, a placement seat is fixedly connected inside the hollow plate, a rotating column is rotatably connected to the placement seat, a gear is fixedly connected to the rotating column, and the gear meshes with the rack.

[0011] Preferably, cams are fixedly connected to both ends of the rotating column, cranks are hinged to the cams, a connecting plate is fixedly connected to the end of the crank away from the cam, the connecting plate is slidably connected to the hollow plate, and a sieve plate is fixedly connected to the end of the connecting plate away from the crank. The sieve plate is placed in the separation box and moves up and down.

[0012] This utility model has the following beneficial effects:

[0013] 1. This separation device achieves stable and efficient separation of molding sand and castings, avoiding problems such as damage to the molding sand box and scratches on the casting surface that are easily caused by manual operation, thus improving the yield of finished castings. At the same time, through automatic separation, the device significantly reduces the labor intensity of workers, minimizes efficiency fluctuations caused by manual intervention, and effectively accelerates the overall progress of casting production.

[0014] 2. This separation device uses the reciprocating impact of the crushing cone and the reciprocating vibration of the sieve plate to crush the solidified molding sand on the outside of the casting, causing the solidified molding sand to gradually break up and completely separate from the surface of the casting. This effectively avoids problems such as scratches and damage to the surface of the casting caused by uneven force. At the same time, the reciprocating vibration of the sieve plate can quickly screen the crushed fine sand through the sieve holes into the pre-set collection box inside the equipment base, realizing the automated and unified collection of loose sand. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the bracket and molding sand box of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the molding sand box of this utility model.

[0018] Figure 4 This is a schematic diagram of the separation box and equipment base of this utility model.

[0019] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the separation box of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the vibration crushing component of this utility model.

[0021] In the diagram: 1. Equipment base; 2. Support frame; 3. Molding sand box; 4. Demolding assembly; 41. Fixing block; 42. Motor; 43. Rotating rod; 44. Baffle plate; 45. Worm gear; 46. Support shaft; 47. Worm wheel; 48. Threaded rod; 49. Connecting rod; 410. Horizontal plate; 5. Buffer plate; 6. Separation box; 7. Vibrating crushing assembly; 71. Hydraulic rod; 72. Mounting plate; 73. Crushing cone; 74. L-shaped rod; 75. Rack; 76. Hollow plate; 77. Placement seat; 78. Rotating column; 79. Gear; 710. Cam; 711. Crank; 712. Connecting plate; 713. Screen plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: This example aims to address the problem of damage to the sand box 3 caused by inconsistent force when manually striking it. Please refer to [link to example]. Figure 1 - Figure 3A device for rapid separation of castings and molding sand includes a base 1, a support 2 fixedly connected to the top surface of the base 1, a molding sand box 3 fixedly connected to the inner side wall of the support 2, a demolding assembly 4 disposed inside the molding sand box 3, a buffer plate 5 hinged to the inner side wall of the support 2, a separation box 6 fixedly connected to the top surface of the base 1, the demolding assembly 4 includes a fixing block 41 fixedly connected to the side wall of the molding sand box 3, a motor 42 fixedly connected to the side wall of the fixing block 41, a rotating rod 43 fixedly connected to the output end of the motor 42, the rotating rod 43 being rotatably connected to the fixing block 41, a baffle 44 fixedly connected to the rotating rod 43, and a worm gear 45 fixedly sleeved on the rotating rod 43. A support shaft 46 is fixedly connected to the side wall of the molding sand box 3. The support shaft 46 is hollow inside. A worm gear 47 is rotatably connected to the top surface of the support shaft 46. The worm gear 47 meshes with the worm 45. A threaded rod 48 is threadedly connected to the worm gear 47. The threaded rod 48 is slidably connected to the support shaft 46. A connecting rod 49 is fixedly connected to the bottom end of the threaded rod 48. The connecting rod 49 is slidably connected to the molding sand box 3 and the support shaft 46. A horizontal plate 410 is fixedly connected to the end of the connecting rod 49 away from the threaded rod 48. The horizontal plate 410 is slidably connected to the molding sand box 3.

[0024] In this embodiment: First, the casting auxiliary device is stably placed in the preset working area and positioned. Then, the prepared molding sand is evenly poured into the molding sand box 3. Based on the required casting size and shape, the sand mold is made in the molding sand box 3 through compaction, molding, and other processes. Once the sand mold is formed and meets the pouring conditions, high-temperature molten metal is slowly poured into the molding sand box 3 along the preset gating system. The molten metal gradually fills each cavity inside the sand mold. After the molten metal completely solidifies and cools to room temperature, the casting process is complete. During the molding process, the molding sand in the molding sand box 3 will be sintered and solidified due to the thermal radiation of the high-temperature molten metal. At the same time, the molding sand will form a tight bond with the surface of the casting and the inner wall of the molding sand box 3. This makes it difficult to separate the molding sand from the casting and the inner wall of the molding sand box 3 after molding. If it is knocked, it will easily damage the box body of the molding sand box 3, which will not only shorten the service life of the molding sand box 3 and increase the equipment replacement cost, but may also cause hidden damage such as cracks and deformation to the casting due to the impact force generated by knocking, affecting the structural strength and performance of the casting.

[0025] Specifically, the motor 42 on the side wall of the starting fixed block 41 drives the rotating rod 43 fixedly connected to it to rotate on the inner side wall of the fixed block 41. The baffle 44 fixedly connected to the outside of the rotating rod 43 then rotates synchronously under the drive of the rotating rod 43, so that the bottom of the molding sand box 3 gradually opens and becomes open.

[0026] Meanwhile, as the rotating rod 43 rotates, the worm gear 45, coaxially sleeved on its outside, also rotates synchronously with the rotating rod 43. The worm gear 45 and the worm wheel 47, rotatably connected to the support shaft 46, form a meshing transmission. Driven by the worm gear 45, the worm wheel 47 rotates on the surface of the support shaft 46. Since the worm wheel 47 has an internal thread groove that matches the thread on the outer surface of the threaded rod 48, the two form a helical transmission structure. Therefore, during the rotation of the worm wheel 47, the threaded rod 48 will move smoothly backward along the axial direction at the center position of the worm wheel 47, and the connecting rod 49 fixedly connected to the bottom end of the threaded rod 48 will move backward synchronously. At this time, the horizontal plate 410, which is fixedly connected to the other end of the connecting rod 49, also moves backward. The side of the horizontal plate 410 that is in contact with the inner wall of the molding sand box 3 gradually separates from the solidified molding sand in the molding sand box 3. Since the bottom of the molding sand box 3 has been opened by the flipping of the baffle 44, and the horizontal plates 410 on both sides have also completed the separation action from the molding sand at the same time, the molding sand and casting, which have lost their support, will fall into the separation box 6 below from the opening at the bottom of the molding sand box 3 under their own gravity. The solidified molding sand blocks inside the separation box 6 are broken and loosened by vibration and crushing, so as to achieve complete separation of the molding sand and the casting, and thus the molded casting can be taken out smoothly.

[0027] Example 2: This example aims to facilitate the solution of the problem of graded recycling of crushed molding sand. This example is an improvement on Example 1. For details, please refer to Example 1. Figure 4 - Figure 6 The separation chamber 6 is equipped with a vibration crushing assembly 7. The vibration crushing assembly 7 includes a hydraulic rod 71 fixedly connected to the side wall of the separation chamber 6. The output end of the hydraulic rod 71 is fixedly connected to a mounting plate 72. Multiple crushing cones 73 are fixedly connected to the side wall of the mounting plate 72. The crushing cones 73 are slidably connected to the separation chamber 6. An L-shaped rod 74 is fixedly connected to the bottom end of the mounting plate 72. A rack 75 is fixedly connected to the side wall of the L-shaped rod 74. The rack 75 is slidably connected to the separation chamber 6. A hollow plate 76 is fixedly connected to the bottom end of the separation chamber 6. The rack 75 is slidably connected to the hollow plate 76. A placement seat 77 is fixedly connected inside the hollow plate 76. A rotating column 78 is rotatably connected to the placement seat 77. A gear 79 is fixedly connected to the rotating column 78. The gear 79 meshes with the rack 75. Cams 710 are fixedly connected to both ends of the rotating column 78. A crank 711 is hinged to the cam 710. A connecting plate 712 is fixedly connected to the end of the crank 711 away from the cam 710. The connecting plate 712 is slidably connected to the hollow plate 76. A sieve plate 713 is fixedly connected to the end of the connecting plate 712 away from the crank 711. The sieve plate 713 is placed in the separation box 6 and moves up and down.

[0028] In this embodiment: when the molding sand and the casting fall into the separation box 6 together, since the two have formed a tightly bonded integrated structure during the cooling process, the casting is completely wrapped by the solidified molding sand. Therefore, the molding sand wrapped around the casting needs to be broken up in order to remove the casting completely.

[0029] At this time, the hydraulic rods 71 ​​on both sides of the separation box 6 are activated, and the hydraulic rods 71 ​​are controlled to retract inward along the axial direction. The mounting plate 72, which is fixedly connected to the output end of the hydraulic rod 71, moves synchronously towards the center position of the separation box 6. Multiple crushing cones 73 evenly distributed on the side wall of the mounting plate 72 approach the casting simultaneously. Under the driving force of the hydraulic rod 71, the crushing cones 73 chisel and crush the solidified molding sand on the outside of the casting. Under the continuous chiseling action of the crushing cones 73, the molding sand on the outside of the casting will gradually break and loosen and separate from the surface of the casting, avoiding scratches or damage to the surface of the casting due to uneven crushing force.

[0030] Simultaneously, as the mounting plate 72 reciprocates and extends with the hydraulic rod 71, the L-shaped rod fixedly connected to its bottom synchronously drives the rack 75, which is fixedly connected to it, to reciprocate linearly within the guide groove of the hollow plate 76. During the reciprocating movement, the rack 75 meshes with the gear 79, and the gear 79 rotates under the driving force of the rack 75, thereby driving the rotating column 78, which is coaxially fixed to it, to rotate on the placement seat 77. Since cams 710 are symmetrically fixedly connected to both ends of the rotating column 78, the cams 710 on both sides will rotate synchronously when the rotating column 78 rotates. Motion; the eccentric position of cam 710 is hinged to crank 711 via a pin. Under the action of the eccentric rotation of cam 710, crank 711 will swing in a circle along the eccentric trajectory of cam 710, thereby driving the connecting plate 712 hinged to it to move up and down reciprocally. Because the connecting plate 712 is slidably connected to the guide structure of hollow plate 76, the connecting plate 712 can only move up and down reciprocally along the guide direction of hollow plate 76. During the up and down movement of connecting plate 712, the sieve plate 713 fixedly connected to it also moves up and down reciprocally in the separation box 6.

[0031] Through the reciprocating vibration of the sieve plate 713, the fine loose sand crushed by the crushing cone 73 can be quickly screened through the sieve holes of the sieve plate 713 into the pre-set collection box inside the equipment base 1, realizing the automated and unified collection of loose sand, which is convenient for the subsequent recycling and reuse of molding sand; while some incompletely crushed large pieces of molding sand with a particle size larger than the sieve hole size will be intercepted on the sieve plate 713, and the castings, due to their large size and heavy weight, will also remain on the surface of the sieve plate 713.

[0032] At this time, the staff can open the separation box 6 through the hinged movable box door on the side of the separation box 6 and take out the castings and large pieces of molding sand separated on the sieve plate 713. The large pieces of molding sand can be recycled after secondary crushing, while the castings can enter the subsequent cleaning and processing procedures. The entire separation process achieves the dual effects of automated operation and resource recycling.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for rapid separation of a casting from molding sand, comprising a device base (1), characterized in that: The top surface of the equipment base (1) is fixedly connected with a support (2), the inner side wall of the support (2) is fixedly connected with a sand mold box (3), the sand mold box (3) is provided with a demolding assembly (4), the inner side wall of the support (2) is hingedly connected with a buffer plate (5), the top surface of the equipment base (1) is fixedly connected with a separation box (6), and the inside of the separation box (6) is provided with a vibration crushing assembly (7).

2. A device for rapid separation of a casting from molding sand according to claim 1, characterized in that: The demolding assembly (4) comprises a fixed block (41) fixedly connected to the side wall of the sand mold box (3), a motor (42) fixedly connected to the side wall of the fixed block (41), an output end of the motor (42) fixedly connected with a rotating rod (43), the rotating rod (43) being rotatably connected with the fixed block (41), a baffle (44) fixedly connected to the rotating rod (43), and a worm (45) fixedly sleeved on the rotating rod (43).

3. A device for rapid separation of a casting from molding sand according to claim 2, characterized in that: The side wall of the sand mold box (3) is fixedly connected with a support shaft (46), the support shaft (46) is hollow, the top surface of the support shaft (46) is rotatably connected with a worm wheel (47), the worm wheel (47) is meshed with the worm (45), the worm wheel (47) is threadedly connected with a threaded rod (48), the threaded rod (48) is slidably connected with the support shaft (46), the bottom end of the threaded rod (48) is fixedly connected with a connecting rod (49), the connecting rod (49) is slidably connected with the sand mold box (3), the connecting rod (49) is slidably connected with the support shaft (46), and the end, away from the threaded rod (48), of the connecting rod (49) is fixedly connected with a horizontal plate (410), the horizontal plate (410) is slidably connected with the sand mold box (3).

4. The device for quick separation of casting from molding sand as claimed in claim 1 wherein: The vibration crushing assembly (7) comprises a hydraulic rod (71) fixedly connected to the side wall of the separation box (6), an output end of the hydraulic rod (71) fixedly connected with a mounting plate (72), a plurality of crushing cones (73) fixedly connected to the side wall of the mounting plate (72), the crushing cones (73) being slidably connected with the separation box (6), an L-shaped rod (74) fixedly connected to the bottom end of the mounting plate (72), a rack (75) fixedly connected to the side wall of the L-shaped rod (74), and the rack (75) being slidably connected with the separation box (6).

5. A device for rapid separation of a casting from molding sand according to claim 4, characterized in that: The bottom end of the separation box (6) is fixedly connected with a hollow plate (76), the rack (75) is slidably connected with the hollow plate (76), the inside of the hollow plate (76) is fixedly connected with a placing seat (77), a rotating column (78) is rotatably connected to the placing seat (77), a gear (79) is fixedly connected to the rotating column (78), and the gear (79) is meshed with the rack (75).

6. A device for rapid separation of a casting from molding sand according to claim 5, characterized in that: Two ends of the rotating column (78) are fixedly connected with cams (710), the cams (710) are hingedly connected with cranks (711), one end of the crank (711) away from the cam (710) is fixedly connected with a connecting plate (712), the connecting plate (712) is slidably connected with the hollow plate (76), one end of the connecting plate (712) away from the crank (711) is fixedly connected with a screening plate (713), and the screening plate (713) moves up and down in the separation tank (6).

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