Synchronous 180-degree rotation sand pouring mechanism

Abstract

The utility model relates to the technical field of shell core machines, in particular to a synchronous 180-degree rotation sand pouring mechanism which comprises a base, mounting frames are symmetrically arranged on the top face of the base and fixedly mounted on the top face of the base through bolts, mounting units are symmetrically arranged on the two mounting frames, and the mounting unit on the left side is used for mounting a static mold. The mounting unit on the right side is used for mounting a movable mold, a workbench is fixedly arranged on the top surface of the base between the mounting frames, and an auxiliary mechanism used for conveying core sand out is arranged in the workbench. By means of the technical scheme, when any one of the movable mold and the static mold is maintained, the maintenance operation space is more sufficient, the maintenance work efficiency is improved, the design is more reasonable, and the auxiliary mechanism capable of transferring core sand is arranged in the workbench below the mold, so that follow-up cleaning work is not needed, the labor intensity of workers is relieved, and practicability is higher.

Description

Technical Field

[0001] This utility model relates to the field of shell core machine technology, and in particular to a synchronous 180° rotating sand-pouring mechanism. Background Technology

[0002] The core-making machine is a device that uses a hot core box process to produce coated sand cores. Its operation involves simultaneous sand filling and compaction. The coated sand solidifies in the hot core box, reducing labor intensity, offering flexible and easy operation, and being easy to master. It uses electric heating, allowing for automatic temperature control, and the work area is easy to keep clean, creating conditions for the mechanization and automation of the core-making process. A single cycle takes only tens of seconds to produce sand cores for casting, making it widely used in the foundry industry.

[0003] The prior art, disclosed in publication number CN213002511U, discloses a shell core machine, including a frame, a sand-shooting assembly, a sand hopper lifting assembly, a mold assembly, a mold pushing assembly, and an electric heating device placed on the mold assembly. It also includes a track assembly, with the mold assembly mounted on it. The mold pushing assembly is connected to the mold assembly to push the mold assembly to slide on the track assembly. A rotating mechanism is also included, connected to the track assembly to drive the track assembly to rotate around its own track axis. This shell core machine utilizes the rotating mechanism to unload material when removing it from the shell core, making the entire process more intelligent and significantly improving the efficiency of the entire shell core production process.

[0004] However, the aforementioned existing technologies still have certain shortcomings in use: First, in the structure of the aforementioned existing technologies, the moving mold and the stationary mold are connected as a whole by a track assembly or guide rod. When some parts of the moving mold or the stationary mold need to be repaired or replaced, the maintenance space is small due to the limitation of the track assembly or guide rod, making maintenance inconvenient and inefficient, and increasing the labor intensity of the workers. Second, the aforementioned existing technologies do not have a corresponding cleaning mechanism designed for the core sand poured out during the sand pouring process, causing the poured core sand to fall directly onto the top surface of the workbench or the ground, making subsequent cleaning of the core sand time-consuming and laborious. Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a synchronously rotating 180° sand-pouring mechanism that enables the modularization and unitization of the dynamic and static mold structures, facilitates the transfer and cleaning of the poured core sand.

[0006] The present invention adopts the following technical solution: a synchronously rotating 180° sand pouring mechanism, including a base, a mounting frame symmetrically arranged on the top surface of the base, the mounting frame being fixedly installed on the top surface of the base by bolts, and mounting units symmetrically arranged on the two mounting frames, the mounting unit on the left side being used to install the static mold, the mounting unit on the right side being used to install the dynamic mold, and a worktable fixedly arranged on the top surface of the base between the mounting frames, and an auxiliary mechanism for transporting the core sand out is arranged in the worktable.

[0007] Preferably, the mounting unit includes a connecting plate disposed inside the mounting frame, and a rotating assembly disposed on the outer side of the connecting plate. The rotating assembly includes a frame, which is fixed to the outside of the connecting plate. A first gear is rotatably disposed inside the frame, and a rotating shaft is axially fixed to the first gear. A bearing is disposed on the rotating shaft, with the inner ring of the bearing fixedly connected to the rotating shaft. The bearing is inserted into the middle of the connecting plate, and the outer ring of the bearing is fixed to the connecting plate. A mold hanging plate is fixedly disposed at the end of the rotating shaft. A second gear that meshes with the first gear is rotatably disposed inside the frame. A servo motor is fixedly disposed on the outside of the frame, and the output shaft of the servo motor passes through the frame and is axially fixed to the second gear.

[0008] Preferably, a horizontal moving assembly is provided between the connecting plate and the mounting frame. The horizontal moving assembly includes a bracket, on which a hydraulic cylinder is inserted and fixedly mounted. A connecting piece is fixedly mounted at the moving end of the hydraulic cylinder. The inner side of the connecting piece is fixed to the outer side of the frame. Bushings are evenly distributed on the outer side of the mounting frame. A guide shaft is slidably mounted in each bushing. Four guide shafts pass through the mounting frame and are in sliding fit. The top ends of the four guide shafts passing through the mounting frame are respectively fixed at the four corners of the connecting plate.

[0009] Preferably, the bracket and servo motor are misaligned.

[0010] Preferably, an anti-detachment device is provided between the rotating shaft and the connecting plate.

[0011] Preferably, the auxiliary mechanism includes two rotating plates. A rectangular groove is provided on the top surface of the worktable. A slot is symmetrically provided on the bottom surface of the worktable on both sides of the rectangular groove. A limiting shaft is fixedly installed in the slot. One end of each of the two rotating plates is respectively sleeved and rotatably mounted on the limiting shaft at the corresponding position. A connecting seat is symmetrically fixedly provided on the bottom surface of the two rotating plates. A connecting seat is symmetrically fixedly provided on the inner wall of the vertical end of the worktable. A pneumatic telescopic rod is provided between the connecting seat and the connecting seat. The fixed end of the pneumatic telescopic rod is hinged to the connecting seat and the moving end of the pneumatic telescopic rod is hinged to the connecting seat.

[0012] Preferably, a notch with a width adapted to the groove is provided on the top surface of the rotating plate near the limit shaft, so that when the rotating plate is in a horizontal state, the vertical surface of the notch is in contact with the wall surface of the rectangular groove.

[0013] Preferably, the length of the top surface of the rotating plate is equal to half the length of the rectangular groove.

[0014] Preferably, the auxiliary mechanism also includes a conveyor. A fixed frame is symmetrically fixed on the inner wall of the vertical end of the worktable. A connecting plate is provided at the inner end of the fixed frame. The connecting plate includes an inclined section and a vertical section. The vertical section of the connecting plate is fixedly connected to the end of the fixed frame. The conveyor is fixedly installed between the two vertical sections of the connecting plate. The output end of the conveyor extends beyond the set length of the worktable and is in a cantilever state. L-shaped support frames are fixedly installed on both sides of the cantilevered conveyor. The bottom end of the support frame is in contact with the ground.

[0015] Preferably, a rubber pad is fixed to the top surface of the inclined section of the connecting plate by bolts and nuts.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] 1. In this application, installation units are symmetrically arranged on two mounting frames. The two installation units respectively install the moving mold and the stationary mold. The structure of the moving mold and the stationary mold is unitized and modularized. Compared with the existing method of connecting the moving mold and the stationary mold in one piece through track components or guide rods, this solution provides more operating space when maintaining the structure of the moving mold or the stationary mold, and makes it more convenient to replace and maintain the structure of one side. This improves the efficiency of maintenance, reduces the labor intensity of the staff, and is more practical.

[0018] 2. In this application, a workbench is provided below the mold, and an auxiliary mechanism is provided inside the workbench to transfer the poured sand core. Compared with the prior art, this solution can directly transfer the poured core sand into the collection frame, preventing the sand core from falling onto the workbench or the ground. This eliminates the need for time-consuming and laborious cleaning, greatly reduces the labor intensity of the workers, provides a clean working environment, and is more practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation unit of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the rotating component of this utility model;

[0022] Figure 4 This is a schematic diagram of some parts of the rotating assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the horizontal moving component of this utility model. Figure 1 ;

[0024] Figure 6This is a schematic diagram of the structure of the horizontal moving component of this utility model. Figure 2 ;

[0025] Figure 7 This is a forward attempt at the auxiliary mechanism of this utility model;

[0026] Figure 8 This is a front structural diagram of the auxiliary mechanism of this utility model;

[0027] Figure 9 This utility model Figure 7 A magnified structural diagram of point A;

[0028] In the diagram: 1. Base; 2. Mounting frame; 3. Mounting unit; 4. Static mold; 5. Moving mold; 6. Worktable; 7. Auxiliary mechanism; 8. Connecting plate; 9. Rotating component; 10. Frame; 11. First gear; 12. Rotating shaft; 13. Bearing; 14. Mold hanging plate; 15. Second gear; 16. Servo motor; 17. Horizontal movement component; 18. Bracket; 19. Hydraulic cylinder; 20. Connecting piece; 21. Bushing; 22. Guide shaft; 23. Rotating plate; 24. Rectangular groove; 25. Groove opening one; 26. Limiting shaft; 27. Connecting seat one; 28. Connecting seat two; 29. ​​Pneumatic telescopic rod; 30. Notch; 31. Conveyor; 32. Fixed frame; 33. Connecting plate; 34. Support frame; 35. Rubber pad. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only a part of the embodiments disclosed in this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Various non-limiting embodiments of this utility model are described in detail below. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0031] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0032] Please see Figure 1-9The present invention will be described in detail below with reference to the accompanying drawings and embodiments: A synchronously rotating 180° sand pouring mechanism includes a base 1, and mounting frames 2 are symmetrically arranged on the top surface of the base 1. The mounting frames 2 are fixedly installed on the top surface of the base 1 by bolts. Mounting units 3 are symmetrically arranged on the two mounting frames 2. The mounting unit 3 on the left is used to install the static mold 4, and the mounting unit 3 on the right is used to install the moving mold 5. A worktable 6 is fixedly arranged on the top surface of the base 1 between the mounting frames 2 by bolts. An auxiliary mechanism 7 for transporting core sand is provided in the worktable 6.

[0033] Please see Figure 1-4 The installation unit 3 includes a connecting plate 8 disposed inside the mounting frame 2. A rotating component 9 is disposed on the outer side of the connecting plate 8. The rotating component 9 includes a frame 10, which is fixed to the outside of the connecting plate 8. A first gear 11 is rotatably disposed inside the frame 10. A rotating shaft 12 is axially fixed to the first gear 11. A bearing 13 is disposed on the rotating shaft 12. The inner ring of the bearing 13 is fixedly connected to the rotating shaft 12. The bearing 13 is inserted into the middle of the connecting plate 8, and the outer ring of the bearing 13 is fixed to the connecting plate 8. A mold hanging plate 14 is fixedly disposed at the end of the rotating shaft 12. A second gear 15 that meshes with the first gear 11 is rotatably disposed inside the frame 10. A servo motor 16 is fixedly disposed on the outside of the frame 10. The output shaft of the servo motor 16 passes through the frame 10 and is axially fixed to the second gear 15.

[0034] When the mold needs to be sanded, the servo motors 16 on both sides are started at the same time. The servo motors 16 drive the second gear 15 to rotate, the second gear 15 drives the first gear 11 to rotate, the first gear 11 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the mold hanging plate 14 to rotate, and then drives the stationary mold 4 and the moving mold 5 to rotate 180° at the same time, so that the mold's feed port faces downward, thus completing the sanding process. When in the sanding state, the servo motor 16 can control the mold to reciprocate at a certain angle, so that the sand in the mold can be poured out more thoroughly.

[0035] Please see Figure 5-6 A horizontal moving assembly 17 is provided between the connecting plate 8 and the mounting frame 2. The horizontal moving assembly 17 includes a bracket 18, on which a hydraulic cylinder 19 is inserted and fixedly installed. A connecting piece 20 is fixedly installed at the moving end of the hydraulic cylinder 19. The inner side of the connecting piece 20 is fixed to the outer side of the frame 10. Bushings 21 are evenly distributed on the outer side of the mounting frame 2. A guide shaft 22 is slidably installed in each bushing 21. The four guide shafts 22 pass through the mounting frame 2 and are slidably engaged. The top ends of the four guide shafts 22 passing through the mounting frame 2 are respectively fixed to the four corners of the connecting plate 8.

[0036] When sand injection is required, the hydraulic cylinders 19 on both sides are activated simultaneously. The moving ends of the hydraulic cylinders 19 on both sides simultaneously push the frame 10, the connecting plate 8, the mold hanging plate 14 and the front mold to gradually move horizontally towards the middle. When the moving mold 5 and the stationary mold 4 are in full contact, the sand injection mechanism can be used to inject sand into the mold cavity. The above-mentioned sand injection mechanism is existing technology and will not be described in detail here.

[0037] After the mold is heated to form the core sand inside the mold cavity and the sand pouring process is completed, the hydraulic cylinder 19 is simultaneously activated in reverse to separate the moving mold 5 and the stationary mold 4 and eject the core. Then, the workers can remove the formed sand core from the mold.

[0038] Please see Figure 5 The bracket 18 and the servo motor 16 are staggered to facilitate installation and prevent interference.

[0039] The mold hanging plate 14 does not contact the connecting plate 8, reducing frictional wear and increasing the service life of the parts.

[0040] An anti-detachment device is provided between the rotating shaft 12 and the connecting plate 8. The anti-detachment device is a limit ring, which can not only realize the rotation between the rotating shaft 12 and the connecting plate 8, but also prevent the rotating shaft 12 from falling off the connecting plate 8 during rotation.

[0041] Please see Figure 7-8 The auxiliary mechanism 7 includes two rotating plates 23. A rectangular groove 24 is provided on the top surface of the worktable 6. The bottom surfaces of the worktable 6 located on both sides of the rectangular groove 24 are symmetrically provided with slots 25. A limiting shaft 26 is fixedly installed in the slot 25. One end of each of the two rotating plates 23 is respectively sleeved and rotatably mounted on the limiting shaft 26 at the corresponding position. A connecting seat 27 is symmetrically fixedly installed on the bottom surfaces of the two rotating plates 23. A connecting seat 28 is symmetrically fixedly installed on the inner wall of the vertical end of the worktable 6. A pneumatic telescopic rod 29 is provided between the connecting seat 27 and the connecting seat 28. The fixed end of the pneumatic telescopic rod 29 is hinged to the connecting seat 28, and the moving end of the pneumatic telescopic rod 29 is hinged to the connecting seat 27.

[0042] Please see Figure 9 Furthermore, a notch 30 adapted to the width of the slot 25 is provided on the top surface of the rotating plate 23 near the limit shaft 26, so that when the rotating plate 23 is in a horizontal state, the vertical surface of the notch 30 just contacts the wall of the rectangular slot 24, thus preventing gaps and ensuring that the top surface of the rotating plate 23 in a horizontal state is at the same level as the top surface of the worktable 6.

[0043] The lower edge of the rotating plate 23 away from the limiting shaft 26 is provided with a rounded corner to prevent interference when the two rotating plates 23 rotate.

[0044] The length of the top surface of the rotating plate 23 is equal to half the length of the rectangular groove 24, so that when both rotating plates 23 are in a horizontal state, the top surface of the rotating plate 23 and the top surface of the worktable 6 form a complete working plane.

[0045] Please see Figure 7-8 The auxiliary mechanism 7 also includes a conveyor 31. A fixed frame 32 is symmetrically fixed on the inner wall of the vertical end of the workbench 6. A connecting plate 33 is provided at the inner end of the fixed frame 32. The connecting plate 33 includes an inclined section and a vertical section. The vertical section of the connecting plate 33 is fixedly connected to the end of the fixed frame 32. The conveyor 31 is fixedly installed between the vertical sections of the two connecting plates 33. The output end of the conveyor 31 extends beyond the workbench 6 by a set length and is in a cantilever state. L-shaped support frames 34 are fixedly installed on both sides of the cantilever conveyor 31. The bottom end of the support frame 34 is in contact with the ground. The L-shaped support frame 34 can not only provide support for the conveyor 31, but also does not hinder the placement of the core sand collection frame below the output end of the conveyor 31.

[0046] The conveyor 31 is located directly below the rectangular trough 24, which facilitates the collection of the poured-out core sand.

[0047] Please see Figure 7-8 A rubber pad 35 is fixedly installed on the top surface of the inclined section of the connecting plate 33 by bolts and nuts. The rubber pad 35 not only provides a contact support surface for the deflected rotating plate 23, but also prevents collision damage between parts and improves the service life of the device.

[0048] When this system is running, firstly, the hydraulic cylinders 19 on both sides are activated simultaneously. The moving ends of the hydraulic cylinders 19 on both sides simultaneously push the frame 10, connecting plate 8, mold hanging plate 14, and the front mold to gradually move horizontally towards the center. When the moving mold 5 and the stationary mold 4 are in full contact, the inner cavity of the mold can be sand-shot by the sand-shooting mechanism. After sand-shooting, the mold is heated. After heating, the servo motors 16 on both sides are activated simultaneously. The servo motors 16 drive the second gear 15 to rotate, the second gear 15 drives the first gear 11 to rotate, the first gear 11 rotates the rotating shaft 12, the rotating shaft 12 drives the mold hanging plate 14 to rotate, and thus drives the stationary mold 4 and the moving mold. 5. Simultaneously rotate 180° so that the feed port of the mold faces downward, thereby completing the sand pouring process. When in the sand pouring state, the mold can be reciprocated at a certain angle by the servo motor 16 to facilitate more thorough pouring of sand from the mold. Before the sand pouring process, start the pneumatic telescopic rod to retract 29, so that the rotating plate 23 deflects downward. When the rotating plate 23 contacts the rubber pad 35, the pneumatic telescopic rod 29 can be closed, and then the conveyor 31 can be started to move. The poured core sand will fall directly onto the moving conveyor 31, and then transport the core sand to the collection frame below the discharge end of the conveyor 31. Therefore, no cleaning work is required afterward, and it is also beneficial to the use of core sand.

[0049] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0050] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A synchronously rotating 180° sand-pouring mechanism, characterized in that: Includes a base (1), and mounting brackets (2) are symmetrically arranged on the top surface of the base (1). The mounting brackets (2) are fixedly installed on the top surface of the base (1) by bolts. Mounting units (3) are symmetrically arranged on the two mounting brackets (2). The mounting unit (3) on the left is used to install the static mold (4), and the mounting unit (3) on the right is used to install the moving mold (5). A workbench (6) is fixedly arranged on the top surface of the base (1) between the mounting brackets (2). An auxiliary mechanism (7) for transporting the core sand is provided in the workbench (6).

2. The synchronously rotating 180° sand-pouring mechanism according to claim 1, characterized in that: The mounting unit (3) includes a connecting plate (8) disposed inside the mounting bracket (2). A rotating assembly (9) is disposed on the outer side of the connecting plate (8). The rotating assembly (9) includes a frame (10). The frame (10) is fixed to the outside of the connecting plate (8). A first gear (11) is rotatably disposed inside the frame (10). A rotating shaft (12) is axially fixed to the first gear (11). A bearing (13) is disposed on the rotating shaft (12). The inner ring of the bearing (13) is connected to the rotating shaft (12). 12) Fixed connection, bearing (13) is inserted into the middle of the connecting plate (8) and the outer ring of bearing (13) is fixed to the connecting plate (8), mold hanging plate (14) is fixedly provided at the end of the rotating shaft (12), a second gear (15) that meshes with the first gear (11) is rotatably provided inside the frame (10), a servo motor (16) is fixedly provided on the outside of the frame (10), and the output shaft of the servo motor (16) passes through the frame (10) and is axially fixed with the second gear (15).

3. The synchronously rotating 180° sand-pouring mechanism according to claim 2, characterized in that: A horizontal moving assembly (17) is provided between the connecting plate (8) and the mounting frame (2). The horizontal moving assembly (17) includes a bracket (18). A hydraulic cylinder (19) is inserted into and fixedly installed on the bracket (18). A connector (20) is fixedly installed at the moving end of the hydraulic cylinder (19). The inner side of the connector (20) is fixed to the outer side of the frame (10). Bushings (21) are evenly distributed on the outer side of the mounting frame (2). A guide shaft (22) is slidably installed in each bushing (21). The four guide shafts (22) pass through the mounting frame (2) and are in sliding fit. The top ends of the four guide shafts (22) passing through the mounting frame (2) are respectively fixed at the four corners of the connecting plate (8).

4. The synchronously rotating 180° sand-pouring mechanism according to claim 3, characterized in that: The bracket (18) and the servo motor (16) are misaligned.

5. The synchronously rotating 180° sand-pouring mechanism according to claim 2, characterized in that: An anti-detachment device is provided between the rotating shaft (12) and the connecting plate (8).

6. The synchronously rotating 180° sand-pouring mechanism according to claim 1, characterized in that: The auxiliary mechanism (7) includes two rotating plates (23). A rectangular groove (24) is provided on the top surface of the worktable (6). The bottom surfaces of the worktable (6) located on both sides of the rectangular groove (24) are symmetrically provided with slots (25). A limiting shaft (26) is fixedly provided in the slot (25). One end of each of the two rotating plates (23) is respectively sleeved and rotatably set on the limiting shaft (26) at the corresponding position. A connecting seat (27) is symmetrically fixedly provided on the bottom surfaces of the two rotating plates (23). A connecting seat (28) is symmetrically fixedly provided on the inner wall of the vertical end of the worktable (6). A pneumatic telescopic rod (29) is provided between the connecting seat (27) and the connecting seat (28). The fixed end of the pneumatic telescopic rod (29) is hinged to the connecting seat (28), and the moving end of the pneumatic telescopic rod (29) is hinged to the connecting seat (27).

7. The synchronously rotating 180° sand-pouring mechanism according to claim 6, characterized in that: A notch (30) with a width adapted to the slot (25) is provided on the top surface of the rotating plate (23) connected to the limiting shaft (26), so that when the rotating plate (23) is in a horizontal state, the vertical surface of the notch (30) is in contact with the wall of the rectangular slot (24).

8. The synchronously rotating 180° sand-pouring mechanism according to claim 6, characterized in that: The length of the top surface of the rotating plate (23) is equal to half the length of the rectangular groove (24).

9. The synchronously rotating 180° sand-pouring mechanism according to claim 6, characterized in that: The auxiliary mechanism (7) also includes a conveyor (31). A fixed frame (32) is symmetrically fixed on the inner wall of the vertical end of the workbench (6). A connecting plate (33) is provided at the inner end of the fixed frame (32). The connecting plate (33) includes an inclined section and a vertical section. The vertical section of the connecting plate (33) is fixedly connected to the end of the fixed frame (32). The conveyor (31) is fixedly installed between the vertical sections of the two connecting plates (33). The output end of the conveyor (31) extends out of the workbench (6) by a set length and is in a cantilever state. L-shaped support frames (34) are fixedly installed on both sides of the cantilever conveyor (31). The bottom end of the support frame (34) is in contact with the ground.

10. The synchronously rotating 180° sand-pouring mechanism according to claim 9, characterized in that: A rubber pad (35) is fixedly installed on the top surface of the inclined section of the connecting plate (33).

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