High frequency hydraulic vibration table

Abstract

The utility model relates to casting technical field, concretely for high frequency hydraulic vibration table, include: with horizontal installation's base, the movable installation of base seat has vibration seat, be equipped with motor seat on vibration seat, fixed with extension seat on vibration seat side wall, the extension seat is hinged with hydraulic cylinder, be equipped with limit slot on extension seat, the hinged pressure ear of hydraulic cylinder stroke end, hydraulic cylinder stroke end and pressure ear hinged pivot axle extension setting, and insert in limit slot, the middle part of pressure ear is equipped with hinged axle, and hinged axle is rotatively connected with extension seat, and pressure ear terminal is pressed on the sand box. The utility model discloses high frequency hydraulic vibration table, and the installation mode of sand box is simple, reliable, and the versatility is strong, is applicable to the sand box of multiple specifications size.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically to a high-frequency hydraulic vibration table. Background Technology

[0002] Casting is a forming process that involves pouring molten metal or alloy into a pre-prepared mold cavity, allowing it to cool and solidify to obtain metal parts with the desired shape and properties. Casting is one of the most fundamental and widely used metal processing methods in modern manufacturing, suitable for producing parts with complex structures and varying sizes, and widely applied in the automotive, aerospace, machinery, energy, and electronics industries.

[0003] Currently, casting processes can be divided into two main categories: sand casting and special casting. Specifically, sand casting uses sand as the molding material and is formed by gravity pouring. The main casting methods include wet sand casting, resin sand casting, and shell casting. Special casting is suitable for castings with high precision and high performance requirements. The main casting methods include investment casting, pressure casting, metal mold casting, centrifugal casting, lost foam casting, and low-pressure casting.

[0004] In the lost foam casting industry, the vibrating table is a crucial molding device. It ensures the molding sand in the sand box adheres tightly to the mold, preventing box collapse during subsequent vacuum pouring and thus improving success rate and reducing scrap rate. Existing vibrating tables rely on the sand box's own weight to maintain its position. However, during vibration, the sand box is prone to displacement and bouncing, leading to uneven vibration and voids in the molding sand. Therefore, to ensure stability, lugs are installed on both the vibrating table and the sand box, and they are secured with bolts. However, using conventional bolts and nuts for fixing still presents the following technical problems:

[0005] 1. When hoisting the sand box, the positions of the sand box lugs and the vibrating table lugs must be matched before the bolts are inserted and the nuts are fixed. This method is time-consuming and labor-intensive, and there is a risk that the bolts and nuts may be damaged due to vibration.

[0006] 2. Conventional sand box fixing components and vibration components on a vibration table are not suitable for sand boxes of different sizes. Utility Model Content

[0007] To address the technical problems existing in the background art, this utility model provides a high-frequency hydraulic vibration table with a simple and reliable sand box installation method; it is highly versatile and suitable for sand boxes of various specifications and sizes.

[0008] The technical solution adopted by this utility model is:

[0009] A high-frequency hydraulic vibration table, including:

[0010] A base for horizontal installation is provided, on which a vibrating seat is movably mounted. A motor seat is provided on the vibrating seat. An extension seat is fixedly provided on the side wall of the vibrating seat. A hydraulic cylinder is hinged to the extension seat. A limit groove is provided on the extension seat. A pressure lug is hinged to the stroke end of the hydraulic cylinder. The stroke end of the hydraulic cylinder and the pressure lug are hinged and extended by a pivot shaft, and are movably inserted into the limit groove. A hinge shaft is provided in the middle of the pressure lug. The hinge shaft is rotatably connected to the extension seat. The end of the pressure lug is pressed against the sand box.

[0011] Furthermore, an installation rod extends upward from the upper end of the base, and an upper spring and a lower spring are fitted around the installation rod.

[0012] Furthermore, a mounting ear protrudes from the side wall of the vibration seat, and the mounting ear is fitted over the mounting rod;

[0013] The upper end of the mounting rod is screwed with a locking nut. The upper and lower ends of the upper spring abut against the locking nut and the upper end face of the mounting ear, respectively. The upper and lower ends of the lower spring abut against the lower end face of the mounting ear and the upper end face of the base, respectively.

[0014] Furthermore, the mounting rod and the mounting ear cooperate with each other, and multiple sets are provided.

[0015] Furthermore, multiple extension seats are arranged side by side along the two side walls of the vibration seat.

[0016] Furthermore, an oil supply line is connected to the hydraulic cylinder, and the oil supply line is connected to the hydraulic oil tank via a distribution valve.

[0017] Furthermore, the limiting groove is configured as an arc shape concentric with the hinge shaft.

[0018] Furthermore, a pressure plate is provided protruding from the lower part of the end of the pressure ear.

[0019] Furthermore, a pressure seat extends from the side wall of the sand box, and the pressure seat is pressed by the pressure plate of the pressure lug.

[0020] The beneficial effects of this high-frequency hydraulic vibration table are as follows:

[0021] 1. The sand box is tightened by hydraulic pressure through the pressure lugs, which is simple to operate and provides reliable fixation;

[0022] 2. The sand box on the vibrating seat is supported by springs, ensuring that the sand box vibrates regularly within a reasonable vibration amplitude; and since the weight of sand boxes of different specifications and sizes is different, the pressure of their own weight on the spring is also different, which can effectively adaptively adjust the vibration amplitude and improve versatility. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the sand box compression state in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the sand box in the loosened state according to an example of this utility model.

[0025] In the picture:

[0026] 1. Base base

[0027] 2. Mounting rod, 21. Upper spring, 22. Lower spring.

[0028] 3. Vibration base; 31. Motor base; 32. Mounting lugs.

[0029] 4. Extension seat; 41. Hydraulic cylinder; 42. Limiting groove; 43. Pressure lug; 44. Hinge shaft.

[0030] 5. Sandbox, 51. Pressure seat. Detailed Implementation

[0031] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.

[0032] This utility model relates to a high-frequency hydraulic vibration table, such as... Figure 1 , Figure 2 As shown, it includes:

[0033] The base 1 is used for horizontal installation. The upper end of the base 1 is provided with an installation rod 2 extending upward. Multiple installation rods 2 are provided. The installation rod 2 is covered with an upper spring 21 and a lower spring 22. The upper end of the installation rod 2 is screwed with a locking nut.

[0034] A vibrating seat 3 is movably mounted on the base 1. A motor seat 31 is mounted on the vibrating seat 3, and a high-frequency vibrating motor is mounted on the motor seat 31. The high-frequency vibrating motor is electrically connected to the control system through a frequency converter. The vibration frequency is adjusted by adjusting the speed of the high-frequency vibrating motor. Multiple mounting ears 32 are provided on the side wall of the vibrating seat 3, and they cooperate with multiple mounting rods 2 respectively. Through holes for mounting rods 2 are provided through the mounting ears 32. Spring seats are provided at the lower end of the locking nut, at the through holes on the mounting ears 32, and at the fixing point of the mounting rods 2 on the base 1. The upper and lower ends of the upper spring 21 abut against the spring seats at the lower end of the locking nut and the upper end of the spring seats at the through holes of the mounting ears 32, respectively. The upper and lower ends of the lower spring 22 abut against the spring seats at the lower end of the through holes of the mounting ears 32 and the spring seats on the base 1, respectively.

[0035] An extension seat 4 is fixedly installed on the side wall of the vibrating seat 3. Multiple extension seats 4 are arranged side by side along the two side walls of the vibrating seat 3. A hydraulic cylinder 41 is hinged to the extension seat 4. An oil supply line is connected to the hydraulic cylinder 41. The oil supply line is connected to the hydraulic oil tank via a distribution valve. The oil pump and distribution valve in the hydraulic oil tank are electrically connected to the control system. A limit groove 42 is provided on the extension seat 4. A pressure ear 43 is hinged to the stroke end of the hydraulic cylinder 41. The stroke end of the hydraulic cylinder 41 and the pressure ear 43 are hinged and extended by a rotating shaft, and are movably inserted into the limit groove 42. A hinge shaft 44 is provided in the middle of the pressure ear 43. The limit groove 42 is set as an arc concentric with the hinge shaft 44. The hinge shaft 44 is rotatably connected to the extension seat 4. A pressure plate is protruding from the lower part of the end of the pressure ear 43. The pressure plate is used to press the sand box 5.

[0036] A pressure seat 51 extends from the side wall of the sand box 5, and the pressure seat 51 is pressed by the pressure plate of the pressure ear 43.

[0037] Based on the specific structure of the high-frequency hydraulic vibration table in the above embodiments, its working process will be further explained below:

[0038] A. Sand box 5 hoisting, such as Figure 2 As shown:

[0039] The hydraulic system is controlled by the control system to retract the stroke end of the hydraulic cylinder 41, which drives the pressure ear 43 at the stroke end of the hydraulic cylinder 41 to rotate along the hinge shaft 44 until the stroke end of the hydraulic cylinder 41 and the hinge shaft extending from the pressure ear 43 are connected, and then move downward along the limiting groove 42. At this time, the pressure ear 43 is in the released state.

[0040] The sand box 5 to be vibrated is hoisted onto the upper surface of the vibrating seat 3 using hoisting equipment, or the sand box 5 that has completed vibration on the upper surface of the vibrating seat 3 is hoisted away.

[0041] B. Sandbox 5 is fixed, such as Figure 1 As shown:

[0042] The hydraulic system is controlled by the control system to extend the stroke end of the hydraulic cylinder 41, which drives the pressure ear 43 at the stroke end of the hydraulic cylinder 41 to rotate along the hinge shaft 44 until the stroke end of the hydraulic cylinder 41 and the hinge shaft extending from the pressure ear 43 move upward along the limiting groove 42. At this time, the pressure plate of the pressure ear 43 presses against the pressure seat 51 of the sand box 5, and the sand box 5 is pressed against the upper surface of the vibrating seat 3.

[0043] C. The sandbox 5 vibrates, such as Figure 1 As shown:

[0044] The state of the pressure lug 43 is detected by monitoring the state of the hydraulic cylinder 41 at the stroke end through the control system.

[0045] When the hydraulic cylinder 41 is in the extended state, that is, when the pressure ear 43 is in the pressed state, the high-frequency vibration motor is started by the control system, which drives the vibration seat 3 to vibrate. At this time, under the thrust of the upper spring 21 and the lower spring 22, the vibration seat 3 vibrates regularly within a reasonable vibration amplitude, thereby ensuring that the molding sand in the sand box 5 fits tightly against the mold.

[0046] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A high-frequency hydraulic vibration table, characterized in that: include: A base (1) for horizontal installation is provided. A vibrating seat (3) is movably installed on the base (1). A motor seat (31) is provided on the vibrating seat (3). An extension seat (4) is fixedly provided on the side wall of the vibrating seat (3). A hydraulic cylinder (41) is hinged on the extension seat (4). A limit groove (42) is provided on the extension seat (4). A pressure ear (43) is hinged at the stroke end of the hydraulic cylinder (41). The stroke end of the hydraulic cylinder (41) and the pressure ear (43) are hinged and extended by a rotating shaft, and are movably inserted into the limit groove (42). A hinge shaft (44) is provided in the middle of the pressure ear (43). The hinge shaft (44) is rotatably connected to the extension seat (4). The end of the pressure ear (43) is pressed onto the sand box (5).

2. The high-frequency hydraulic vibration table according to claim 1, characterized in that: The base (1) is provided with an installation rod (2) extending upward from its upper end. The installation rod (2) is fitted with an upper spring (21) and a lower spring (22).

3. The high-frequency hydraulic vibration table according to claim 2, characterized in that: The vibrating seat (3) has a protruding mounting ear (32) on its side wall, and the mounting ear (32) is sleeved on the outside of the mounting rod (2); The upper end of the mounting rod (2) is screwed with a locking nut. The upper and lower ends of the upper spring (21) abut against the locking nut and the upper end face of the mounting ear (32) respectively. The upper and lower ends of the lower spring (22) abut against the lower end face of the mounting ear (32) and the upper end face of the base (1) respectively.

4. The high-frequency hydraulic vibration table according to claim 3, characterized in that: The mounting rod (2) and the mounting ear (32) cooperate with each other, and multiple sets are provided.

5. The high-frequency hydraulic vibration table according to claim 1, characterized in that: Multiple extension seats (4) are arranged side by side along the two side walls of the vibration seat (3).

6. The high-frequency hydraulic vibration table according to claim 5, characterized in that: The hydraulic cylinder (41) is connected to an oil supply line, which is connected to the hydraulic oil tank via a distribution valve.

7. The high-frequency hydraulic vibration table according to claim 5, characterized in that: The limiting groove (42) is set as an arc concentric with the hinge shaft (44).

8. The high-frequency hydraulic vibration table according to claim 5, characterized in that: A pressure plate is provided at the lower part of the end of the pressure ear (43).

9. The high-frequency hydraulic vibration table according to claim 8, characterized in that: A pressure seat (51) extends from the side wall of the sand box (5), and the pressure seat (51) is pressed by the pressure plate of the pressure ear (43).

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