Sand box sand supplementing device for evanescent mode casting production
By using a sand-adding motor to drive the sealing plate and the sand-distributing pusher plate in tandem, the problems of uniformity of casting sand and dust overflow during lost foam casting are solved, achieving automated uniform sand addition and an efficient casting process.
Patent Information
- Application Number
- CN202422938094.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional sand replenishment methods cannot ensure the uniformity and consistency of molding sand filling during lost foam casting. Manual sand replenishment is inefficient, automatic sand replenishment equipment cannot achieve uniform replenishment, and existing equipment has the problem of dust overflow.
The sand supply motor drives the sealing plate to move intermittently, which, combined with the sand distribution pusher and the equalization plate, enables the automated and uniform spreading of foundry sand. Through the coordinated work of the sand supply and distribution components, the uniform distribution of foundry sand in the sand box is ensured, and dust leakage is reduced by the dustproof sheet.
It achieves uniform replenishment of foundry sand in the sand box, improves sand replenishment efficiency, reduces manual operation steps, and enhances the cleanliness and safety of the working environment.
Smart Images
Figure CN223642725U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sand box technology, and in particular to a sand replenishment device for lost foam casting production. Background Technology
[0002] Lost foam casting is an advanced casting process widely used in the automotive, aerospace, and other fields. In the lost foam casting process, molding sand needs to be uniformly filled into the sand box to ensure the quality of the castings. However, due to uneven density of the molding sand and complex mold shapes, traditional sand filling methods struggle to ensure the uniformity and consistency of the molding sand filling.
[0003] Current sand replenishment methods are generally divided into manual and automatic sand replenishment. Manual sand replenishment not only makes it difficult to ensure the uniformity of molding sand but also has low work efficiency; while automatic sand replenishment cannot evenly replenish the foundry sand into the sand box, still requiring manual spreading of the foundry sand, resulting in low efficiency. Therefore, developing an efficient sand box replenishment device is of great significance. Utility Model Content
[0004] To address the aforementioned issues, this application provides a sand replenishment device for lost foam casting production.
[0005] The sand replenishment device for lost foam casting production provided in this application adopts the following technical solution:
[0006] A sand replenishment device for lost foam casting production includes a sand replenishment box, a sand replenishment assembly, and a sand distribution assembly. The sand replenishment box is located above the production sand box. The sand replenishment assembly includes a partition box, a sealing plate, and a sand replenishment motor. The partition box is located inside the sand replenishment box and has a sand replenishment port at its bottom. The sealing plate is used to seal the sand replenishment port. The sand replenishment motor is located on the sand replenishment box and drives the sealing plate to move intermittently up and down. The sand distribution assembly includes a sand distribution pusher plate, a baffle plate, and a distribution plate. The sand distribution pusher plate is telescopically connected inside the sand replenishment box. The distribution plate is located at the bottom of the sand replenishment box. The baffle plate is slidably connected inside the sand replenishment box and located below the distribution plate. The sand distribution pusher plate is used to spread the casting sand on the distribution plate.
[0007] By adopting the above technical solution, the molding sand can be intermittently replenished into the sand replenishment box by driving the sealing plate with the sand replenishment motor to move intermittently. Then, the sand distribution pusher moves at the bottom of the sand replenishment box to spread the molding sand evenly, ensuring that there is casting sand in every position at the bottom of the sand replenishment box. Then, the baffle plate moves, and the molding sand is replenished into the sand box through the equalization plate. This can realize automated sand replenishment and make the casting sand replenished into the sand box evenly spread, reducing manual handling steps and effectively improving sand replenishment efficiency.
[0008] Preferably, the sand replenishment assembly further includes a sand replenishment cam and a lifting slide rod. The sand replenishment cam is connected to the output shaft of the sand replenishment motor, the lifting slide rod is connected to the sealing plate, the sand replenishment cam abuts against one end of the lifting slide rod, and the lifting slide rod moves up and down along the sand replenishment box.
[0009] Preferably, the end of the lifting slide bar away from the sealing plate is provided with a reset plate, the reset plate is provided with a reset spring, and the end of the reset spring away from the reset plate is located on the outer wall of the sand replenishment box.
[0010] By adopting the above technical solution, the sand replenishment motor drives the sand replenishment cam to rotate. When the small diameter end of the sand replenishment cam abuts against the lifting slide rod, it drives the lifting slide rod and the sealing plate to move downward. At this time, the reset spring is in a stretched state, and the casting sand in the separator box moves to the bottom of the sand replenishment box. The sand replenishment cam continues to rotate, and the reset plate is reset under the action of the reset spring. At this time, the large diameter end of the sand replenishment cam abuts against the lifting slide rod. This process is repeated to achieve automated and regular automatic sand replenishment.
[0011] Preferably, the lifting slide bar is provided with a limiting slider, and the outer wall of the sand replenishment box is provided with a lifting groove for the limiting slider to be placed and slid.
[0012] By adopting the above technical solution, when the lifting slide bar moves, it drives the limiting slider to move within the lifting slide groove, thereby limiting the movement path of the lifting slide bar.
[0013] Preferably, the sand separating assembly further includes a sand separating cylinder and a telescopic connecting rod. The sand separating cylinder is located outside the sand replenishment box, the telescopic connecting rod is located inside the sand replenishment box and connected to the piston rod of the sand separating cylinder, and the sand separating push plate is connected to one end of the telescopic connecting rod.
[0014] Preferably, both ends of the sand-distributing pusher are rotatably connected to movable rollers, and the inner wall of the sand replenishment box is provided with a rolling groove for the movable rollers to be placed and rolled.
[0015] By adopting the above technical solution, the operation of the sand-distributing cylinder drives the telescopic connecting rod to extend and retract, and the telescopic connecting rod drives the sand-distributing push plate to move back and forth, so that the sand-distributing push plate evenly spreads the casting sand at the bottom of the sand filling box, while driving the moving roller to roll along the rolling groove, and the rolling groove can limit the movement of the sand-distributing push plate.
[0016] Preferably, the sand replenishment box is equipped with a distribution cylinder, the piston rod of the distribution cylinder is connected to the baffle plate, the inner wall of the sand replenishment box is equipped with a sensor, the sensor is electrically connected to the distribution cylinder, when the sand distribution push plate retracts and abuts against the sensor, the sensor sends a signal to the distribution cylinder, and the distribution cylinder starts after receiving the signal.
[0017] By adopting the above technical solution, when the sand distribution plate retracts and abuts against the sensor, the sensor sends a signal to the equalization cylinder. After receiving the signal, the equalization cylinder starts to drive the baffle plate to move, so that the casting sand is replenished from the equalization plate into the sand box.
[0018] Preferably, the sand replenishment box is provided with dustproof sheets on its lower side and all four sides.
[0019] By adopting the above technical solution, dust overflow can be effectively reduced during the sand replenishment process.
[0020] This application includes at least one of the following beneficial technical effects:
[0021] 1. By setting up the sand replenishment component, the sand replenishment motor drives the sand replenishment cam to rotate. When the small diameter end of the sand replenishment cam abuts against the lifting slide bar, it drives the lifting slide bar and the sealing plate to move downward. At this time, the return spring is in a stretched state, and the casting sand in the separator box moves to the bottom of the sand replenishment box. The sand replenishment cam continues to rotate, and the return plate is reset under the action of the return spring. At this time, the large diameter end of the sand replenishment cam abuts against the lifting slide bar. This process is repeated to achieve automated and regular automatic sand replenishment.
[0022] 2. With the sand distribution component, when the foundry sand moves from the partition box to the bottom of the replenishment box, the sand distribution cylinder drives the sand distribution push plate to move back and forth, spreading the foundry sand evenly on the distribution plate, and then replenishing it to the production sand box through the distribution plate. The distribution plate can achieve uniform replenishment and filter out larger particles of foundry sand.
[0023] 3. The dustproof sheet effectively prevents dust from spilling out during sand replenishment, improving the cleanliness and safety of the working environment. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of the sand box replenishing device for lost foam casting production, as shown in the embodiments of this application.
[0025] Figure 2 This is a structural schematic diagram illustrating the sand replenishment component and the sand separation component in the embodiments of this application.
[0026] Explanation of reference numerals in the attached drawings: 1. Sand replenishment box; 11. Dustproof sheet; 12. Lifting slide rail; 2. Sand replenishment assembly; 21. Divider box; 22. Sealing plate; 23. Lifting slide bar; 24. Limiting slider; 25. Sand replenishment motor; 251. Sand replenishment cam; 26. Reset plate; 261. Reset spring; 3. Sand distribution assembly; 31. Sand distribution cylinder; 32. Sand distribution push plate; 33. Telescopic connecting rod; 34. Moving roller; 35. Baffle plate; 36. Equalizing plate; 37. Equalizing cylinder; 4. Sand box. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-2This application will be described in further detail.
[0028] This application discloses a sand replenishment device for sand boxes used in lost foam casting production, such as... Figure 1 and 2 As shown, the system includes a sand replenishment box 1, a sand replenishment assembly 2, and a sand distribution assembly 3. The sand replenishment box 1 is located above the production sand box 4. The sand replenishment assembly 2 is used to intermittently drop casting sand into the sand replenishment box 1, and then the sand distribution assembly 3 evenly spreads the casting sand to ensure that the casting sand is replenished into the sand box 4 in a uniform size and evenly distributed manner. To reduce dust overflow during the sand replenishment process, a dustproof sheet 11 is also connected to the outer wall of the sand replenishment box 1.
[0029] like Figure 1 and 2 As shown, the sand replenishment assembly 2 includes a partition box 21, a sealing plate 22, and a sand replenishment motor 25. The partition box 21 is located inside the sand replenishment box 1, and a sand replenishment port is opened at the bottom of the partition box 21. The sealing plate 22 is used to seal the sand replenishment port. The sand replenishment motor 25 is fixedly connected to the sand replenishment box 1, and a sand replenishment cam 251 is fixedly connected to the end of the output shaft of the sand replenishment motor 25. Lifting slide rods 23 are fixedly connected to both sides of the sealing plate 22, and limit sliders 24 are fixedly connected to the lifting slide rods 23. A lifting groove 12 is opened on the outer wall of the sand replenishment box 1 for the limit sliders 24 to be placed and slid. A reset plate 26 is fixedly connected to the end of the lifting slide rod 23 away from the sealing plate 22, and a reset spring 261 is fixedly connected to the reset plate 26. The end of the reset spring 261 away from the reset plate 26 is located on the outer wall of the sand replenishment box 1. The sand replenishment cam 251 abuts against the surface of the reset plate 26.
[0030] like Figure 1 and 2 As shown, the sand replenishment motor 25 drives the sand replenishment cam 251 to rotate. When the small-diameter end of the sand replenishment cam 251 abuts against the lifting slide rod 23, it drives the lifting slide rod 23 and the sealing plate 22 to move downwards, so that the casting sand in the separator box 21 can move to the bottom of the sand replenishment box 1. At the same time, the limiting slider 24 moves in the lifting slide groove 12 to limit the movement path of the lifting slide rod 23. At this time, the return spring 261 is in a stretched state. The sand replenishment cam 251 continues to rotate, and the return plate 26 is reset under the action of the return spring 261. At this time, the large-diameter end of the sand replenishment cam 251 abuts against the lifting slide rod 23. This process is repeated to achieve automated and regular automatic sand replenishment. According to the sand replenishment work requirements, a suitable model of sand replenishment cam 251 is selected to control the amount of sand replenished in each single operation.
[0031] like Figure 1 and 2As shown, the sand-distributing assembly 3 includes a sand-distributing cylinder 31, a sand-distributing push plate 32, and a telescopic connecting rod 33. The sand-distributing cylinder 31 is fixedly connected to the outer wall of the sand-filling box 1. The telescopic connecting rod 33 is coaxially connected to the piston rod of the sand-distributing cylinder 31 and is located inside the sand-filling box 1. The sand-distributing push plate 32 is fixedly connected to the end of the telescopic connecting rod 33 away from the sand-distributing cylinder 31. Movable rollers 34 are rotatably connected to both ends of the sand-distributing push plate 32. The inner wall of the sand-filling box 1 has rolling grooves for the movable rollers 34 to be placed and rolled. In order to better control the movement path of the sand-distributing push plate 32, two sets of sand-distributing push plates 32, telescopic connecting rods 33, and sand-distributing cylinders 31 are provided, and the two sets operate synchronously when spreading casting sand.
[0032] like Figure 1 and 2 As shown, the sand distribution assembly 3 also includes a baffle plate 35 and a distribution plate 36. The distribution plate 36 is fixedly connected to the bottom of the sand supply box 1. The sand distribution push rod is used to spread the foundry sand on the distribution plate 36. The baffle plate 35 is slidably connected inside the sand supply box 1 and located below the distribution plate 36. A distribution cylinder 37 is fixedly connected to the outside of the sand supply box 1. The piston rod of the distribution cylinder 37 is connected to the baffle plate 35. A sensor is provided on the inner wall of the sand supply box 1, and the sensor is electrically connected to the distribution cylinder 37. When the sand distribution push rod retracts and abuts against the sensor, the sensor sends a signal to the distribution cylinder 37, and the distribution cylinder 37 starts after receiving the signal.
[0033] The implementation principle of a sand replenishment device for lost foam casting production according to an embodiment of this application is as follows:
[0034] The foundry sand is stored in the partition box 21. The speed of the sand replenishment motor 25 is set according to the processing requirements, and a suitable sand replenishment cam 251 model is selected. Then, according to the PLC program, the sand replenishment motor 25 runs, driving the lifting slide 23 to move the sealing plate 22 up and down. When the lifting slide 23 moves down, it moves the sealing plate 22 away from the partition box 21, so that the foundry sand stored in the partition box 21 falls through the sand replenishment port onto the equalization plate 36 in the sand replenishment box 1.
[0035] Then, the sand-distributing cylinder 31 is activated, driving the telescopic connecting rod 33 and the sand-distributing push plate 32 to move back and forth, evenly spreading the casting sand that falls onto the equalizing plate 36. According to the set program, after the sand-distributing push plate 32 abuts against the sensor, the sensor sends a signal to the equalizing cylinder 37. After receiving the signal, the equalizing cylinder 37 is activated, driving the baffle plate 35 to move, so that the casting sand is evenly replenished into the sand box 4. This achieves automatic sand replenishment and reduces the manual spreading and tidying steps, effectively improving work efficiency.
[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A sand replenishment device for lost foam casting production, characterized in that: The system includes a sand replenishment box (1), a sand replenishment assembly (2), and a sand distribution assembly (3). The sand replenishment box (1) is located above the production sand box (4). The sand replenishment assembly (2) includes a partition box (21), a sealing plate (22), and a sand replenishment motor (25). The partition box (21) is located inside the sand replenishment box (1), and a sand replenishment port is provided at the bottom of the partition box (21). The sealing plate (22) is used to seal the sand replenishment port. The sand replenishment motor (25) is located on the sand replenishment box (1). (25) Drive the sealing plate (22) to move intermittently up and down. The sand distribution assembly (3) includes a sand distribution push plate (32), a baffle plate (35) and a distribution plate (36). The sand distribution push plate (32) is telescopically connected to the sand filling box (1). The distribution plate (36) is located at the bottom of the sand filling box (1). The baffle plate (35) is slidably connected to the sand filling box (1) and located below the distribution plate (36). The sand distribution push plate (32) is used to spread the casting sand on the distribution plate (36).
2. The sand replenishment device for lost foam casting production according to claim 1, characterized in that: The sand replenishing assembly (2) also includes a sand replenishing cam (251) and a lifting slide rod (23). The sand replenishing cam (251) is connected to the output shaft of the sand replenishing motor (25), and the lifting slide rod (23) is connected to the sealing plate (22). One end of the sand replenishing cam (251) abuts against the lifting slide rod (23), and the lifting slide rod (23) moves up and down along the sand replenishing box (1).
3. The sand replenishment device for lost foam casting production according to claim 2, characterized in that: The lifting slide bar (23) is provided with a reset plate (26) at the end away from the sealing plate (22). The reset plate (26) is provided with a reset spring (261). The end of the reset spring (261) away from the reset plate (26) is located on the outer wall of the sand filling box (1).
4. The sand replenishing device for lost foam casting production according to claim 3, characterized in that: The lifting slide bar (23) is provided with a limiting slider (24), and the outer wall of the sand filling box (1) is provided with a lifting groove (12) for the limiting slider (24) to be placed and slide.
5. A sand replenishing device for lost foam casting production according to claim 1, characterized in that: The sand separating assembly (3) also includes a sand separating cylinder (31) and a telescopic connecting rod (33). The sand separating cylinder (31) is located outside the sand replenishment box (1), and the telescopic connecting rod (33) is located inside the sand replenishment box (1) and connected to the piston rod of the sand separating cylinder (31). The sand separating push plate (32) is connected to one end of the telescopic connecting rod (33).
6. A sand replenishing device for lost foam casting production according to claim 5, characterized in that: Both ends of the sand-distributing pusher plate (32) are rotatably connected to movable rollers (34), and the inner wall of the sand replenishment box (1) is provided with a rolling groove for the movable rollers (34) to be placed and rolled.
7. A sand replenishing device for lost foam casting production according to claim 5, characterized in that: The sand filling box (1) is equipped with a distribution cylinder (37). The piston rod of the distribution cylinder (37) is connected to the baffle plate (35). The inner wall of the sand filling box (1) is equipped with a sensor. The sensor is electrically connected to the distribution cylinder (37). When the sand distribution push plate (32) retracts and abuts against the sensor, the sensor sends a signal to the distribution cylinder (37). The distribution cylinder (37) starts after receiving the signal.
8. A sand replenishing device for lost foam casting production according to claim 1, characterized in that: The sand filling box (1) is provided with dustproof sheets (11) on its lower side and all four sides.