Evaporative pattern vibration molding device

Abstract

The utility model relates to a kind of lost foam vibration molding device, including base, vibration table, vibration subassembly, sand box fixed subassembly and damping component;Vibration table is set in the upper end of base, and vibration subassembly is equipped in the four around of vibration table, and vibration subassembly includes four vibration motors, and vibration motor is connected fixed between vibration table by stepped rubber column, and the large diameter end of stepped rubber column is pasted with vibration table bottom, and small diameter end is embedded in the recess in the top of vibration motor;The upper end surface of vibration table is equipped with sand box fixed subassembly, and sand box fixed subassembly is equipped with four groups and symmetrically set in the four corners of vibration table, and damping component includes multiple air bags, and air bag is evenly installed between base and vibration table.The utility model realizes vibration amplitude flexible adjustment, multidirectional vibration output and sand box stable clamping by optimizing vibration subassembly, damping component and sand box fixed structure, and improves the modeling quality of lost foam casting.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, and in particular to a lost foam vibration molding device. Background Technology

[0002] Lost foam casting is a novel casting method that involves bonding and assembling a paraffin or foam model similar in size and shape to the casting, coating it with refractory paint, drying it, embedding it in a dry quartz sand box, vibrating it, and then pouring the casting under negative pressure. This causes the model to vaporize, the liquid metal to occupy the model's position, and after solidification and cooling, the casting is formed. Vibration molding can break up dendrites, increase the number of crystal nuclei within the liquid phase, and refine the final solidification structure of the casting, improving its mechanical properties. However, existing vibration molding devices have several drawbacks. For example, since vibration is driven by a vibrating motor, most vibrating tables are not easily adjustable in terms of vibration amplitude after assembly, and adjustments can only be made within the inherent frequency range of the vibrating motor. For sand boxes requiring varying vibration amplitude, multiple vibration molding devices are often necessary, significantly increasing production costs. Furthermore, the vibration direction of existing devices is relatively singular, making it difficult to meet the diverse requirements for molding sand compaction in complex-shaped castings, resulting in inconsistent casting quality. Moreover, existing designs also have shortcomings in terms of stability and durability. For example, elastic elements are prone to fatigue damage under long-term high-frequency vibration, and the synchronization of the drive structure is poor, which affects the normal operation and service life of the equipment.

[0003] Therefore, it is necessary to develop a lost foam vibration molding device to address the aforementioned shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide a lost foam vibration molding device that optimizes the vibration components, damping components, and sand box fixing structure to achieve flexible adjustment of vibration amplitude, multi-directional vibration output, and stable clamping of the sand box, thereby improving the molding quality of lost foam casting.

[0005] To solve the above technical problems, this utility model adopts the following technical solution: a lost foam vibration molding device, including a base, a vibration table, vibration components, a sand box fixing component, and a shock absorption component; the vibration table is disposed on the upper end of the base, and the vibration components are arranged around the vibration table. The vibration components include four vibration motors, and the vibration motors are connected and fixed to the vibration table through stepped rubber columns. The large-diameter end of the stepped rubber columns is fitted with the bottom of the vibration table, and the small-diameter end is embedded in the countersunk hole at the top of the vibration motor; the upper surface of the vibration table is provided with sand box fixing components, and four sets of sand box fixing components are symmetrically arranged at the four corners of the vibration table; the shock absorption component includes multiple airbags, and the airbags are evenly installed between the base and the vibration table.

[0006] Preferably, the upper surface of the vibration table is provided with a cross-shaped anti-slip groove, and a wear-resistant rubber strip is embedded in the groove.

[0007] Preferably, the airbag is provided with flanges at both the upper and lower ends for fixing, and is fixed between the base and the vibration table by the flanges; the inflation port of the airbag faces one end of the base, the base is provided with a through hole corresponding to the inflation port, and each airbag is connected to a set of inlet and outlet pipes, the inlet and outlet pipes pass through the through hole and are connected to the inflation port of the airbag.

[0008] Preferably, the sand box fixing assembly includes a cylinder, a fixing plate, a slider, a movable block, and a clamping column. The cylinder is fixedly mounted on the vibration table via the fixing plate, which is vertically mounted at one corner of the vibration table. The slider is fixedly connected to the extended end of the cylinder. The slider is slidably mounted on the vibration table via a T-slot at its lower end. The sliding direction of the slider is consistent with the axial direction of the extended end of the cylinder. The movable block is rotatably mounted on the front end of the slider. The movable block has an L-shaped structure. Clamping columns are rotatably mounted at the two legs at the front end of the movable block. The outer circumference of the clamping columns abuts against the sand box.

[0009] Preferably, the outer diameter of the clamping column is greater than the width of the movable block.

[0010] Preferably, the bottom end of the base is provided with a shock-absorbing rubber pad.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0012] This invention relates to a lost foam vibratory molding device. By incorporating a shock-absorbing assembly composed of multiple independent air chambers, each connected to a set of inlet and outlet pipes, the device allows for flexible adjustment of the vibration amplitude of the vibration table. This is achieved by adjusting the inflation volume of different air chambers to modify their supporting stiffness and height. Combined with the buffering effect of stepped rubber columns on vibration transmission, this allows for flexible adjustment of the vibration amplitude of the vibration table. It eliminates the need for multiple sets of devices to meet different vibration amplitude requirements, effectively solving the problems of inconvenient vibration amplitude adjustment and high costs associated with multiple sets of equipment in existing systems, thus significantly reducing production costs. Four vibration motors are installed around the vibration table. By controlling the start / stop, frequency, or phase combination of different vibration motors, horizontal, vertical, and combined directional vibration outputs can be achieved. This multi-directional vibration capability can meet the diverse requirements of complex-shaped castings for molding sand compaction, ensuring uniform and compacted molding sand. This effectively improves upon the problem of inconsistent casting quality caused by the single vibration direction of existing devices, enhancing the stability of casting quality. Four symmetrical sand box fixing components are set on the upper surface of the vibration table. A cylinder drives the slider to move the movable block and clamping column. The L-shaped movable block and the rotating clamping column can adapt to the contours of sand boxes of different sizes to achieve stable clamping. At the same time, the cross-shaped anti-slip grooves and embedded wear-resistant rubber strips on the upper surface of the vibration table increase the friction between the sand box and the vibration table, effectively preventing the sand box from sliding and shifting during vibration, and ensuring the stability of the molding process. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Fig. 1 This is a three-dimensional structural diagram of the lost foam vibration molding device of this utility model;

[0015] Fig. 2 This is a schematic diagram of the main structure of the lost foam vibration molding device of this utility model;

[0016] Fig. 3 This is a top view of the lost foam vibration molding device of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Base; 2. Vibration table; 201. Groove; 3. Vibration assembly; 301. Vibration motor; 302. Rubber column; 4. Sand box fixing assembly; 401. Cylinder; 402. Fixing plate; 403. Slider; 404. Moving block; 405. Clamping column; 5. Shock absorption assembly; 501. Flange; 502. Airbag; 503. Inflation hole; 6. Shock-absorbing rubber pad. Detailed Implementation

[0018] The core of this utility model is to provide a lost foam vibration molding device. By optimizing the vibration components, damping components and sand box fixing structure, it can achieve flexible adjustment of vibration amplitude, multi-directional vibration output and stable clamping of sand box, thereby improving the molding quality of lost foam casting.

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Refer to the attached diagram. Fig. 1 This is a three-dimensional structural diagram of the lost foam vibration molding device of this utility model; Fig. 2 This is a schematic diagram of the main structure of the lost foam vibration molding device of this utility model; Fig. 3 This is a top view of the lost foam vibration molding device of this utility model.

[0022] In one specific implementation, such as Figs. 1-3 As shown, a lost foam vibration molding device includes a base 1, which serves as the basic support structure for the entire device. The lower end is provided with four support columns for support, and the bottom end of each support column is provided with a shock-absorbing rubber pad 6, which can further reduce the vibration transmitted to the ground when the equipment is running.

[0023] In one specific implementation, such as Figs. 1-3As shown, the vibration table 2 is positioned on top of the base 1. The upper surface of the vibration table 2 has a cross-shaped anti-slip groove 201, into which wear-resistant rubber strips are embedded. This increases the friction between the sand box and the vibration table 2, improves the wear resistance of the vibration table 2 surface, and extends its service life. Vibration components 3 are arranged around the vibration table 2. Each vibration component 3 includes four vibration motors 301, which are connected and fixed to the vibration table 2 via stepped rubber columns 302. The larger diameter end of the stepped rubber column 302 fits against the bottom of the vibration table 2 and is fixed to the bottom of the vibration table 2 with bolts. The smaller diameter end is embedded in the countersunk hole at the top of the vibration motor 301. This connection method ensures the stability of vibration transmission and provides a certain buffering effect through the elasticity of the rubber column 302. The vibration motors 301 generate vibration during operation, which is transmitted to the vibration table 2 through the stepped rubber columns 302. The stepped rubber columns 302 not only connect and fix the vibratory motors 301 and the vibration table 2, but their rubber material also buffers and filters the vibration, reducing damage to the equipment structure from vibration impact. Four vibratory motors 301 are distributed around the vibration table 2. By adjusting the operating states of each motor, such as different start-stop combinations, frequency differences, or phase differences, the vibration table 2 can synthesize vibrations in different directions to meet the diverse requirements of complex castings for molding sand compaction. Starting two opposing motors achieves horizontal vibration; starting two adjacent motors achieves oblique composite vibration; and starting all four motors achieves vertical and multi-directional composite vibration.

[0024] In one specific implementation, such as Figs. 1-3 As shown, the upper surface of the vibration table 2 is provided with a sand box fixing assembly 4. Four sets of sand box fixing assemblies 4 are symmetrically arranged at the four corners of the vibration table 2. The sand box fixing assembly 4 includes a cylinder 401, a fixing plate 402, a slider 403, a movable block 404, and a clamping column 405. The cylinder 401 is fixedly mounted on the vibration table 2 via the fixing plate 402, which is vertically mounted at one corner of the vibration table 2. The extended end of the cylinder 401 is fixedly connected to the slider 403, which slides on the vibration table 2 via a T-slot at its lower end. The sliding direction of the slider 403 is consistent with the axial direction of the extended end of the cylinder 401. The movable block 404 is rotatably mounted on the front end of the slider 403. The movable block 404 has an L-shaped structure, and the clamping column 405 is rotatably mounted on the two legs at the front end of the movable block 404. The outer circumference of the clamping column 405 abuts against the sand box. The outer diameter of the clamping column 405 is larger than the width of the movable block 404.

[0025] The sand box fixing assembly 4 is powered by a cylinder 401, which moves the slider 403, thereby causing the movable block 404 and the clamping column 405 to clamp the sand box. The L-shaped movable block 404 and the rotatable clamping column 405 can adapt to different shapes of the sand box, ensuring a firm clamping. At the same time, the cross-shaped anti-slip groove 201 and wear-resistant rubber strip on the vibration table 2 increase the friction between the sand box and the vibration table 2, preventing the sand box from sliding and shifting during vibration, and ensuring the stable progress of the molding sand compaction process.

[0026] In one specific implementation, such as Figs. 1-3 As shown, the shock absorption assembly 5 includes multiple airbags 502, which are evenly installed between the base 1 and the vibration table 2. The number of airbags 502 is set according to the size of the vibration table 2 and the load-bearing requirements, usually 4-8. Both the upper and lower ends of the airbags 502 are provided with flanges 501 for fixing, and the airbags 502 are fixed between the base 1 and the vibration table 2 by bolts. The inflation port 503 of the airbag 502 faces one end of the base 1, and the base 1 has a through hole corresponding to the inflation port 503. One end of the air pipe is connected to the inflation port 503 of the airbag 502 via a quick-connect fitting, and an O-ring is installed at the fitting for sealing. The other end extends through the through hole of the base 1 to the air circuit control box on the outside of the equipment. The air circuit control box is not shown in the figure. Each airbag 502 is connected to a set of inlet and outlet air pipes. The air circuit system is equipped with a precision pressure regulating valve, a solenoid reversing valve, and a flow sensor. The inflation volume is digitally adjusted through a PLC control system, which can display and record the air pressure value of each airbag 502 in real time. Each airbag 502 can be independently adjusted in terms of inflation volume. When the inflation volume of the airbag 502 changes, its elastic deformation capacity changes, thereby altering the support stiffness of the vibration table 2. The change in support stiffness affects the vibration amplitude of the vibration table 2 under the action of the vibration motor 301.

[0027] The airbag 502 here is made of multi-layer composite rubber material. The inner layer is high-pressure resistant nitrile rubber. The upper and lower flanges 501 are connected to the airbag 502 through a hot vulcanization process. A one-way valve is installed at the inflation port 503 to prevent leakage. The airbag 502 is existing technology and can be purchased according to the load-bearing requirements.

[0028] The operation process of this lost foam vibratory molding device is as follows: The sand box to be molded is placed on the upper surface of the vibration table 2. The cylinder 401 in the sand box fixing assembly 4 is activated, and the extended end of the cylinder 401 pushes the slider 403 to slide along the T-slot on the vibration table 2. The slider 403 drives the front movable block 404 and the clamping column 405 to move towards the sand box until the outer circumference of the clamping column 405 is in close contact with the sand box, thus achieving a firm fixation of the sand box. According to the molding requirements of the casting, the inflation volume of the air bag 502 is adjusted by controlling the air inlet and outlet pipes corresponding to each air bag 502. Different inflation volumes will change the support stiffness and height of the air bag 502, which, in conjunction with the stepped rubber column 302, allows for flexible adjustment of the vibration amplitude of the vibration table 2. The vibration motors 301 around the vibration table 2 are turned on, and by controlling the start / stop, frequency, or phase combination of different vibration motors 301, the vibration table 2 can generate horizontal, vertical, or combined vibrations. Vibration is transmitted to the vibration table 2 via stepped rubber columns 302, causing the molding sand in the sand box to vibrate and compact. During vibration, the wear-resistant rubber strips in the cross-shaped anti-slip grooves 201 prevent the sand box from sliding, and the airbags 502 in the damping assembly 5 and the damping rubber pads 6 at the bottom of the base 1 reduce the impact of vibration on the equipment itself and the surrounding environment. After molding is completed, the vibration motor 301 is turned off, the control cylinder 401 is retracted, and the slider 403, movable block 404, and clamping column 405 are moved away from the sand box, releasing the fixation of the sand box and removing it from the vibration table 2.

[0029] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A lost foam vibration molding device, characterized in that: The system includes a base (1), a vibration table (2), a vibration assembly (3), a sand box fixing assembly (4), and a shock absorption assembly (5). The vibration table (2) is located on the upper end of the base (1). The vibration assembly (3) is arranged around the vibration table (2). The vibration assembly (3) includes four vibration motors (301). The vibration motors (301) are connected and fixed to the vibration table (2) through stepped rubber columns (302). The large diameter end of the stepped rubber column (302) is attached to the bottom of the vibration table (2), and the small diameter end is embedded in the countersunk hole at the top of the vibration motor (301). The upper surface of the vibration table (2) is provided with a sand box fixing assembly (4). The sand box fixing assembly (4) has four sets and is symmetrically arranged at the four corners of the vibration table (2). The shock absorption assembly (5) includes multiple airbags (502). The airbags (502) are evenly installed between the base (1) and the vibration table (2).

2. The lost foam vibration molding device according to claim 1, characterized in that: The upper surface of the vibration table (2) is provided with a cross-shaped anti-slip groove (201), and a wear-resistant rubber strip is embedded in the groove (201).

3. The lost foam vibration molding device according to claim 1, characterized in that: The airbag (502) is provided with flanges (501) for fixing at both the upper and lower ends, and is fixed between the base (1) and the vibration table (2) by the flanges (501); the inflation hole (503) of the airbag (502) faces the end of the base (1), and the base (1) is provided with a through hole corresponding to the inflation hole (503). Each airbag (502) is connected to a set of inlet and outlet pipes, and the inlet and outlet pipes pass through the through hole and connect to the inflation hole (503) of the airbag (502).

4. The lost foam vibration molding device according to claim 1, characterized in that: The sand box fixing assembly (4) includes a cylinder (401), a fixing plate (402), a slider (403), a movable block (404), and a clamping column (405). The cylinder (401) is fixedly installed on the vibration table (2) through the fixing plate (402). The fixing plate (402) is vertically installed at one corner of the vibration table (2). The slider (403) is fixedly connected to the extended end of the cylinder (401). The slider (403) is slidably installed on the vibration table (2) through the T-slot at its lower end. The sliding direction of the slider (403) is consistent with the axial direction of the extended end of the cylinder (401). The movable block (404) is rotatably installed at the front end of the slider (403). The movable block (404) has an L-shaped structure. The clamping column (405) is rotatably installed at the two legs at the front end of the movable block (404). The outer circumference of the clamping column (405) abuts against the sand box.

5. The lost foam vibration molding device according to claim 4, characterized in that: The outer diameter of the clamping column (405) is greater than the width of the movable block (404).

6. The lost foam vibration molding device according to claim 1, characterized in that: The bottom end of the base (1) is provided with a shock-absorbing rubber pad (6).

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