Vibration shakeout device for sand casting of vacuum pump casting

Abstract

A vibration shakeout device for sand casting of vacuum pump castings relates to the technical field of vibration shakeout devices and comprises a workbench and a base fixedly arranged at the bottom of the workbench, a fixing seat is fixedly mounted on one side of the upper end face of the workbench, and a transmission cavity for mounting a vibration mechanism is formed in the fixing seat. A vibration block is slidably mounted on one side of the interior of the transmission cavity, one end of the vibration block extends out of the fixing base, a clamping base is mounted on the other side of the upper end face of the workbench, a sliding groove is formed in the clamping base, an adjusting block is slidably mounted in the sliding groove, and an elastic reset mechanism is arranged at one end of the adjusting block. And one side of the vibration block and one side of the elastic reset mechanism are provided with clamping assemblies for fixing the casting part. The vibration shakeout device solves the problem that the casting part is easily thrown up due to vibration to cause damage when the vibration shakeout device is used for moving out the casting part.

Description

Technical Field

[0001] This utility model relates to the technical field of vibration sand removal devices, specifically a vibration sand removal device for sand casting of vacuum pump castings. Background Technology

[0002] The vibratory sand removal device for sand casting is a key piece of equipment in sand casting production. It works by generating excitation force through mechanical or electromagnetic vibration. Its structure includes an eccentric wheel and electromagnetic vibration mechanism to generate vibration, a load-bearing component to hold the sand box and casting, damping devices such as damping springs and rubber pads to reduce the impact of vibration, and a drive device such as an electric motor to power the vibration mechanism.

[0003] For example, the Chinese authorized patent CN211939003U, entitled "A Sand Crusher", includes a fixed support for the sand crusher, a vibrating sand crusher body on the top of the fixed support, a spiral sand crusher at the bottom of the vibrating sand crusher body, a spiral sand crusher shell fixedly connected to the discharge port at the bottom of the vibrating sand crusher through a discharge port, a push screw arranged horizontally inside the spiral sand crusher shell, a rotary motor connected to the end of the push screw near the discharge port, a sand crusher end cover at the other end of the push screw, and a screen on the sand crusher end cover.

[0004] While the existing technology can achieve sand removal of castings, the vibration generated by the vibrating table during the vibration sand removal process will throw the castings up, causing frequent friction with the vibrating table. Although it achieves a certain sand removal effect, it will cause damage to the castings to a certain extent, thus failing to meet the current requirements. In response, we propose a vibrating sand removal device for sand casting of vacuum pump castings. Utility Model Content

[0005] The purpose of this utility model is to provide a vibratory sand removal device for sand casting of vacuum pump castings, so as to solve the problem that the vibratory sand removal device mentioned in the background art is prone to damage to the castings due to vibration.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibratory sand removal device for sand casting of vacuum pump castings, comprising a worktable and a base fixedly installed at the bottom of the worktable. A fixed seat is fixedly installed on one side of the upper surface of the worktable. The fixed seat has a transmission cavity for installing a vibration mechanism inside. A vibration block is slidably installed on one side of the transmission cavity, and one end of the vibration block extends to the outside of the fixed seat. A clamping seat is installed on the other side of the upper surface of the worktable. A sliding groove is provided inside the clamping seat. An adjusting block is slidably installed inside the sliding groove. An elastic reset mechanism is provided at one end of the adjusting block. A clamping assembly for fixing the casting is provided on one side of both the vibration block and the elastic reset mechanism.

[0007] Preferably, the vibration mechanism includes an eccentric wheel, and the shafts at the front and rear ends of the eccentric wheel are rotatably connected to the fixed base. A drive motor is fixedly installed at the front end of the fixed base, and the output shaft of the drive motor is fixed to the eccentric wheel.

[0008] Preferably, a servo motor is fixedly installed on one side inside the clamping seat, and a screw is installed on the output shaft of the servo motor. The screw extends into the interior of the adjusting block and is threadedly connected to the adjusting block.

[0009] Preferably, the elastic reset mechanism includes a telescopic rod, and the fixed end of the telescopic rod is fixed to the adjusting block, and a support spring is provided on the outside of the telescopic rod.

[0010] Preferably, the vibration mechanism includes a clamping plate, which is fixed to the movable ends of the vibration block and the telescopic rod respectively, and the inner side of the clamping plate has multiple top columns arranged in a rectangular array.

[0011] Preferably, the upper end of the worktable is provided with a trough, and the fixing seat and the clamping seat are located on both sides above the trough. The trough is provided with a plurality of equally spaced rotating rollers, and a first recycling chamber is provided below the trough.

[0012] Preferably, a second recovery chamber is provided at the lower end of the base, a negative pressure fan is installed on one side of the second recovery chamber, an adsorption hood is provided above the fixed seat and the clamping seat, and the adsorption hood is connected to the second recovery chamber through an adsorption tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a flexible clamping mechanism. After the casting is placed above the rotating roller, the servo motor is activated, and its output shaft drives the screw to rotate. The friction between the external thread and the internal thread of the adjusting block, combined with the guiding effect of the sliding groove, causes the adjusting block to move the clamping plate towards the casting until the top posts on the inner sides of the two clamping plates are in close contact with the casting. After the drive motor is activated, the eccentric wheel rotates at high speed. Each rotation of the eccentric wheel makes contact with the vibrating block inside the fixed seat. The clamping mechanism on the vibrating block moves the casting to one side, clamping it on the other side. The support springs on the mechanism cause compression. When the eccentric wheel separates from the vibrating block, the casting is quickly reset under the elastic action of the support springs. This process is repeated, resulting in high-frequency vibration of the casting while it is tightly clamped. Throughout the entire vibration and sand removal process, the casting is always tightly clamped and will not shift randomly or rub improperly against other parts due to vibration. This effectively ensures the integrity of the casting and significantly reduces the risk of damage to the casting during sand removal. At the same time, the high-frequency vibration combined with the stable clamping can efficiently shake the sand mold off the surface of the casting, improving the sand removal efficiency and ensuring a more thorough sand removal effect.

[0015] 2. This utility model incorporates an adsorption mechanism, which consists of an adsorption hood, an adsorption tube, a recovery chamber, and a negative pressure fan. After the negative pressure fan is activated, a negative pressure environment is created within the recovery chamber. The adsorption hood is positioned above the vibration station of the casting and is connected to the recovery chamber via the adsorption tube. Under negative pressure, tiny floating sand particles shaken off the casting are adsorbed into the adsorption hood and then sucked into the recovery chamber via the adsorption tube. This effectively solves the problem of sand particles flying everywhere during the sand-falling process, avoids sand contamination of the working environment, and allows for centralized collection of sand particles, facilitating subsequent processing and reuse. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 For the present utility model Figure 2 AA section diagram;

[0019] Figure 4 This is a schematic diagram of the vibration clamping mechanism of this utility model.

[0020] In the diagram: 1. Workbench; 2. Base; 3. Fixed seat; 4. Vibrating block; 5. Clamping seat; 6. Adjusting block; 7. Telescopic rod; 8. Support spring; 9. Clamping plate; 10. Top column; 11. Drive motor; 12. Slot; 13. Rotary roller; 14. Adsorption hood; 15. Adsorption tube; 16. Transmission chamber; 17. Eccentric wheel; 18. Servo motor; 19. Slide groove; 20. Screw; 21. First recovery chamber; 22. Second recovery chamber; 23. Negative pressure fan. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of a vibratory sand-falling device for sand casting of vacuum pump castings, comprising a worktable 1 and a base 2 fixedly disposed at the bottom of the worktable 1. A fixed seat 3 is fixedly installed on one side of the upper surface of the worktable 1. The fixed seat 3 has a transmission cavity 16 for mounting a vibration mechanism inside. The vibration mechanism includes an eccentric wheel 17, and the shafts of the front and rear ends of the eccentric wheel 17 are rotatably connected to the fixed seat 3. A drive motor 11 is fixedly installed at the front end of the fixed seat 3, and the output shaft of the drive motor 11 is fixed to the eccentric wheel 17. The transmission cavity... A vibrating block 4 is slidably installed on one side of the inside of the workbench 16, and one end of the vibrating block 4 extends to the outside of the fixed seat 3. A clamping seat 5 is installed on the other side of the upper surface of the workbench 1. The clamping seat 5 has a sliding groove 19 inside, and an adjusting block 6 is slidably installed inside the sliding groove 19. One end of the adjusting block 6 is provided with an elastic reset mechanism. The elastic reset mechanism includes a telescopic rod 7, and the fixed end of the telescopic rod 7 is fixed to the adjusting block 6. A support spring 8 is provided on the outside of the telescopic rod 7. A clamping assembly for fixing the casting is provided on one side of both the vibrating block 4 and the elastic reset mechanism.

[0023] In use, after the drive motor 11 is turned on, the eccentric wheel 17 is driven to rotate at high speed. Every time the eccentric wheel 17 rotates once, it will make contact with the vibration block 4 inside the fixed base 3. The clamping mechanism on the vibration block 4 drives the casting to move to one side, which compresses the support spring 8 on the clamping mechanism on the other side. When the eccentric wheel 17 separates from the vibration block 4, the casting is quickly reset under the elastic action of the support spring 8. This process is repeated, so that the casting can achieve high-frequency vibration under the premise of being tightly clamped. During the entire vibration and sand removal process, the casting is always tightly clamped and will not be displaced at will or cause improper friction with other parts due to vibration. This effectively ensures the integrity of the casting and greatly reduces the risk of damage to the casting during the sand removal process.

[0024] Please see Figure 3 A servo motor 18 is fixedly installed on one side inside the clamping base 5. A screw 20 is mounted on the output shaft of the servo motor 18, extending into the interior of the adjusting block 6 and threadedly connected to it. When the servo motor 18 is started, the output shaft drives the screw 20 to rotate. The external thread on the screw 20 engages with the threaded hole in the adjusting block 6. Based on the principle of threaded transmission, the rotational motion of the screw 20 is converted into linear motion of the adjusting block 6 within the slide groove 19, allowing the adjusting block 6 to move closer to or further away from the casting. This method of using the servo motor 18 to drive the screw 20 and thus the adjusting block 6 allows for precise control of the adjusting block 6's movement distance, thereby accurately adjusting the clamping position of the clamping assembly on the casting and ensuring that castings of different specifications can be firmly and accurately clamped.

[0025] Please see Figure 1The vibration mechanism includes a clamping plate 9, which is fixed to the movable ends of the vibrating block 4 and the telescopic rod 7. Multiple top posts 10 are arranged in a rectangular array on the inner side of the clamping plate 9. The design of the clamping plate 9 and the top posts 10 increases the contact area with the casting, improves the stability of the clamping, and ensures that the casting will not shake or shift during the vibration and sand removal process. This effectively avoids friction damage between the casting and other components. At the same time, the gap between the top posts 10 is conducive to the discharge of sand.

[0026] Please see Figure 3 The upper end of the workbench 1 is provided with a trough 12, and the fixing seat 3 and the clamping seat 5 are located on both sides above the trough 12. Multiple equally spaced rotating rollers 13 are provided inside the trough 12, and a first recovery chamber 21 is provided below the trough 12. During the vibration sand removal process, sand particles shaken off the casting fall through the trough 12. The rotating rollers 13 allow the casting to move more smoothly during vibration without affecting the falling sand particles. The sand particles pass through the trough 12 and enter the first recovery chamber 21 below for collection.

[0027] Please see Figure 2 , Figure 3 and Figure 4 The lower end of the base 2 has a second recovery chamber 22. A negative pressure fan 23 is installed on one side of the second recovery chamber 22. An adsorption hood 14 is located above the fixed base 3 and the clamping base 5, and the adsorption hood 14 is connected to the second recovery chamber 22 through an adsorption pipe 15. When the negative pressure fan 23 is activated, a negative pressure environment is created in the second recovery chamber 22, causing suction at the adsorption hood 14. During the vibration and sand removal process, the flying sand particles are sucked into the adsorption hood 14 and enter the second recovery chamber 22 through the adsorption pipe 15. The adsorption mechanism can collect the flying sand particles, further reducing the pollution of the working environment by sand particles and protecting the health of workers; at the same time, it can more comprehensively recover the sand particles, improving the sand particle recycling rate.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vibrating shakeout device for sand casting of vacuum pump castings, comprising a worktable (1) and a base (2) fixedly arranged at the bottom of the worktable (1), characterized in that: A fixed seat (3) is fixedly installed on one side of the upper surface of the workbench (1). The fixed seat (3) has a transmission cavity (16) for installing a vibration mechanism inside. A vibration block (4) is slidably installed on one side of the transmission cavity (16), and one end of the vibration block (4) extends to the outside of the fixed seat (3). A clamping seat (5) is installed on the other side of the upper surface of the workbench (1). A sliding groove (19) is provided inside the clamping seat (5). An adjusting block (6) is slidably installed inside the sliding groove (19). An elastic reset mechanism is provided at one end of the adjusting block (6). A clamping assembly for fixing the casting is provided on one side of both the vibration block (4) and the elastic reset mechanism.

2. A shake-out device for sand casting of vacuum pump castings according to claim 1, characterized in that: The vibration mechanism includes an eccentric wheel (17), and the shafts at the front and rear ends of the eccentric wheel (17) are rotatably connected to the fixed seat (3). The front end of the fixed seat (3) is fixedly mounted with a drive motor (11), and the output shaft of the drive motor (11) is fixed to the eccentric wheel (17).

3. A shake-out device for sand casting of vacuum pump castings according to claim 1, characterized in that: A servo motor (18) is fixedly installed on one side inside the clamping seat (5). A screw (20) is installed on the output shaft of the servo motor (18). The screw (20) extends into the interior of the adjusting block (6) and is threadedly connected to the adjusting block (6).

4. The shakeout device for sand casting of vacuum pump castings according to claim 1, characterized in that: The elastic reset mechanism includes a telescopic rod (7), and the fixed end of the telescopic rod (7) is fixed to the adjusting block (6). A support spring (8) is provided on the outside of the telescopic rod (7).

5. A shake-out device for sand casting of vacuum pump castings according to claim 4, characterized in that: The vibration mechanism includes a clamping plate (9), which is fixed to the movable ends of the vibration block (4) and the telescopic rod (7) respectively. The inner side of the clamping plate (9) is provided with multiple top columns (10) in a rectangular array.

6. A shake-out device for sand casting of vacuum pump castings according to claim 1, characterized in that: The upper end of the workbench (1) is provided with a trough (12), and the fixed seat (3) and the clamping seat (5) are located on both sides above the trough (12). The interior of the trough (12) is provided with multiple equally spaced rotating rollers (13), and the lower part of the trough (12) is provided with a first recycling chamber (21).

7. A shakeout device for sand casting of vacuum pump castings according to claim 1, characterized in that: The lower end of the base (2) is provided with a second recovery chamber (22), and a negative pressure fan (23) is installed on one side of the second recovery chamber (22). An adsorption cover (14) is provided above the fixed seat (3) and the clamping seat (5), and the adsorption cover (14) is connected to the second recovery chamber (22) through an adsorption tube (15).

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