Combined hydraulic valve plate

Abstract

The utility model relates to the technical field of die casting machines, in particular to a combined type hydraulic valve plate. The utility model relates to an oil inlet valve for a die-casting machine, which mainly comprises a main valve plate connected with a die-casting machine template, and a sandwich valve plate group connected with one side of the main valve plate, and the top of the main valve plate is provided with an oil inlet and an oil outlet. The sandwich valve plate group comprises a side sandwich valve plate connected with one side of the main valve plate, an upper sandwich valve plate connected with the top surface of the side sandwich valve plate, and a lower sandwich valve plate connected with the bottom surface of the side sandwich valve plate; the main valve plate is communicated with the side sandwich valve plate through an internal oil way, and the upper sandwich valve plate is communicated with the lower sandwich valve plate through an internal oil way. According to the T-shaped combination mode, loads can be better dispersed and transmitted, so that the risk of deformation or toppling caused by external force is reduced, and the installation stability between the hydraulic valve plate combination and the die-casting machine die plate can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of die-casting machine technology, and specifically to a combined hydraulic valve plate. Background Art

[0002] A die-casting machine is a device used for pressure casting. It mainly consists of a mold-closing mechanism, an injection mechanism, and a hydraulic system. Its working principle involves pouring molten or semi-molten metal into a pressure chamber. Under high pressure, the metal fills the die-casting mold cavity at extremely high speed. The molten or semi-molten metal then cools and solidifies under high pressure to obtain the casting. The hydraulic system is the core component of the die-casting machine, primarily responsible for performing a series of actions such as mold clamping, mold opening, ejector pin operation, and localized pressurization. These actions are mainly achieved through hydraulic control elements within the hydraulic system. These control elements control and regulate the direction, pressure, and flow of hydraulic oil to meet the die-casting machine's requirements for the direction, force, and speed of movement. In existing die-casting machines, to achieve the intended control functions, hydraulic control elements are typically integrated or combined on a single hydraulic valve plate. The hydraulic valve plate serves as both the carrier of the hydraulic control elements and the channel for their oil circuit connections, thus achieving the integration and standardization of the die-casting machine's hydraulic system.

[0003] With the increasing variety of die-casting molds, the types and quantities of hydraulic control components in hydraulic systems also need to be flexibly adjusted to meet actual functional requirements. In view of this, modular hydraulic valve plates have emerged, providing strong support for the efficient and stable operation of hydraulic systems due to their high flexibility and adaptability. For example, Chinese patent document CN208978199U discloses a modular hydraulic valve plate structure, which includes several hydraulic valve plates connected in a sequentially stacked, i.e., a linear combination. The number of these hydraulic valve plates can be adjusted according to the actual number of neutron valves to be assembled, thereby improving the convenience of assembly.

[0004] However, the above-mentioned technical solution has certain technical drawbacks. Due to space constraints, the hydraulic valve plate assembly cannot be equipped with supporting components. Therefore, the hydraulic valve plate assembly using a linear combination will form a cantilever beam structure. As the demand for the number of hydraulic valve plates in the hydraulic system increases, the length of this cantilever beam structure will also increase accordingly. This will lead to an increase in the bending moment and deflection of the hydraulic valve plate assembly, resulting in significant bending deformation and adversely affecting the overall stability of the hydraulic valve plate assembly. In addition, this combination method will occupy a large amount of lateral space, thus increasing production costs. This technical drawback urgently needs to be addressed to ensure the stable and efficient operation of the die-casting machine's hydraulic system. Utility Model Content

[0005] The purpose of this invention is to provide a modular hydraulic valve plate that improves the stability of the assembled connection of hydraulic valve plates, thereby ensuring the stable operation of the hydraulic system of the die-casting machine. Simultaneously, it optimizes the spatial layout of the die-casting machine, improves space utilization, and effectively reduces production costs.

[0006] In order to achieve the above-mentioned purpose, the technical solutions adopted by the present invention are as follows:

[0007] A combined hydraulic valve plate comprises a main valve plate connected to a die-casting machine template and a superimposed valve plate group connected to one side of the main valve plate, wherein an oil inlet and an oil outlet are provided on the top of the main valve plate. The invention is characterized in that the superimposed valve plate group comprises a side superimposed valve plate connected to one side of the main valve plate, an upper superimposed valve plate connected to the top surface of the side superimposed valve plate and a lower superimposed valve plate connected to the bottom surface of the side superimposed valve plate; the main valve plate and the side superimposed valve plate, the upper superimposed valve plate and the lower superimposed valve plate are connected through an internal oil circuit.

[0008] The main valve plate is the valve plate that bears the main weight. It is connected to the die-casting machine template through one side, establishing a connection between the entire hydraulic valve plate assembly and the die-casting machine. The power unit of the die-casting machine hydraulic system is connected to the oil inlet and oil outlet of the main valve plate through a pipeline. During this process, hydraulic oil enters the hydraulic valve plate assembly through the oil inlet and eventually flows out through the oil return port. The superimposed valve plate group adopts an upper and lower superimposed valve plate, which is connected in sequence from top to bottom. The superimposed valve plate is connected to the main valve plate through the side superimposed valve plate to form a stable T-shaped structure. Compared with the straight-line combination, this T-type combination has greater stability under the premise of the same number of hydraulic valve plates. This T-type combination not only can better disperse and transmit loads, thereby reducing the risk of deformation or tipping due to external forces, but also can make the load more evenly distributed, thereby significantly reducing the risk of stress concentration, thereby enhancing the installation stability between the hydraulic valve plate assembly and the die-casting machine template. In addition, the T-type combination method optimizes the spatial layout of the hydraulic valve plate assembly, changing the original partial horizontal space occupation to vertical space occupation, thereby reducing the overall space requirements of the die-casting machine and thus reducing production costs.

[0009] As a preferred embodiment of this utility model, the combined hydraulic valve plate further includes a hydraulic valve assembly area, which includes a first hydraulic valve assembly area disposed on the side of the main valve plate, a second hydraulic valve assembly area disposed on the side of the side stacked valve plate, a third hydraulic valve assembly area disposed on the side of the upper stacked valve plate, and a fourth hydraulic valve assembly area disposed on the side of the lower stacked valve plate.

[0010] The hydraulic valve assembly area is used to install various hydraulic valves. Different hydraulic valves drive different external mechanical structures to perform functions such as mold ejection, rapid die clamping, brake operation, and die bridge during the die-casting process. The first hydraulic assembly area is mounted on the side of the main valve plate, the second hydraulic valve assembly area is mounted on the side of the side stacking valve plate, the third hydraulic valve assembly area is mounted on the side of the upper stacking valve plate, and the fourth hydraulic valve assembly area is mounted on the side of the lower stacking valve plate. Each hydraulic valve assembly area is specifically designed and can be flexibly adjusted according to actual functional needs.

[0011] As a preference of the present invention, the second hydraulic valve combination area, the third hydraulic valve combination area and the fourth hydraulic valve combination area are all arranged in the same direction as the first hydraulic valve combination area.

[0012] Therefore, since the hydraulic valves installed in the hydraulic combination area are all equipped with pipelines connected to external actuating mechanical components, when the hydraulic combination areas on different valve plates are oriented differently, there is an interference effect in the summary setting of the pipelines. The setting directions of the second hydraulic valve combination area, the third hydraulic valve combination area and the fourth hydraulic valve combination area are all the same as the setting direction of the first hydraulic valve combination area, which can increase the scientific nature of pipeline management.

[0013] As a preferred embodiment of this utility model, the first hydraulic valve assembly area includes multiple 10-bore hydraulic mounting areas and multiple 25-bore hydraulic mounting areas.

[0014] Therefore, the first hydraulic valve combination area is the hydraulic combination area located on the main valve plate, which is the hydraulic valve installation position closest to the die-casting machine template. It can include multiple 10-diameter hydraulic installation areas and 25-diameter hydraulic installation areas. Hydraulic installation areas of different diameters are used to install hydraulic valves of different specifications to meet the working requirements of different actions. The 10-diameter hydraulic valve installed on the main valve plate of a large die-casting machine is usually used for quick clamping and mold bridge functions, and the 25-diameter hydraulic valve group is reserved for the ejector function. The pipelines of these functions need to be close to the template surface.

[0015] As a preferred embodiment of the present invention, this type of combined hydraulic valve plate also includes a valve plate inner cavity for the circulation of hydraulic oil, and the valve plate inner cavity includes an input cavity connected to the oil inlet and an output cavity connected to the oil outlet; and the input cavity and the output cavity are both connected to the hydraulic valve combination area.

[0016] The inner lumen of the valve plate serves as the hydraulic oil passageway connecting the external hydraulic oil input device and the various hydraulic valves mounted on the valve plate. It is primarily divided into two sections: an input lumen connected to the oil inlet on the main valve plate, and an output lumen connected to the oil outlet on the main valve plate. The inner lumen of the valve plate is located within the valve plate itself, with corresponding oil passage holes located on the main valve plate and each of the other valve plates. When the valve plates are connected, the corresponding oil passage holes are aligned and form a seal under pressure, thereby combining the separate lumen within the different valve plates into a complete inner lumen.

[0017] As a preferred embodiment of this utility model, the combined hydraulic valve plate further includes a connecting portion for connecting each valve plate. The connecting portion includes a main connecting portion for connecting the main valve plate and the stacked valve plate group, and a secondary connecting portion for connecting the side stacked valve plate and the upper stacked valve plate with the lower stacked valve plate.

[0018] Therefore, the main connecting part and the secondary connecting part are used to fix the valve plates together as a whole. They can be assembled and connected in the form of bolts and screw holes, or in the form of snap-fit ​​assembly.

[0019] As a preferred embodiment of the present invention, the combined hydraulic valve plate further includes a positioning portion arranged between the main valve plate and the side stacked valve plate.

[0020] Therefore, to ensure precise alignment of the oil passage holes between the valve plates and prevent oil leakage, it is necessary to ensure proper alignment of the valve plates during installation. For the main valve plate and the side stacking valve plates, not only horizontal alignment is important during installation, as they also experience vertical forces. Therefore, adding a positioning element can improve vertical alignment during installation. The positioning element can be a locating pin that fits the locating hole. Once the two are precisely aligned, they can be connected via the main connecting element to maximize alignment.

[0021] As a preferred embodiment of the present invention, the hydraulic valve combination area is further provided with a diameter adapter plate, and the diameter adapter plate is used to convert the 25-diameter hydraulic installation area into a 10-diameter hydraulic installation area.

[0022] To further increase the flexibility of the entire valve plate assembly, a bore adapter plate is provided. When a large number of 10-bore hydraulic valves are needed and the demand for 25-bore hydraulic valves is relatively small, multiple 10-bore hydraulic valves can be installed in the 25-bore hydraulic installation area through the bore adapter plate, thereby enhancing applicability.

[0023] As a preferred embodiment of the present invention, a lifting hole is provided on the top surface of the upper stacked valve plate.

[0024] Due to the large overall mass of the hydraulic valve plate assembly, the assembly task cannot be effectively completed by manpower alone. Therefore, it is necessary to install lifting rings on the lifting holes and use a crane or crane to perform lifting operations to ensure both work efficiency and safety.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. The stacked valve plate assembly adopts an upper stacked valve plate, a side stacked valve plate, and a lower stacked valve plate connected sequentially from top to bottom. The side stacked valve plates are connected to the main valve plate, forming a stable T-shaped structure. This T-shaped assembly not only better disperses and transfers loads, reducing the risk of deformation or tipping due to external forces, but also ensures a more even load distribution, significantly reducing the risk of stress concentration and thus enhancing the installation stability between the hydraulic valve plate assembly and the die-casting machine template.

[0027] 2. The T-type combination optimizes the spatial layout of the hydraulic valve plate combination, converting the original partial horizontal space occupation into vertical space occupation, thereby reducing the overall space requirement of the die-casting machine and further reducing production costs.

[0028] 3. The orientation of the second, third, and fourth hydraulic valve assembly areas is the same as that of the first hydraulic valve assembly area, which can increase the scientific nature of pipeline management. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the combined hydraulic valve plate structure;

[0030] Figure 2 This is a structural diagram of the main valve plate in the combined hydraulic valve plate;

[0031] Figure 3 This is a top view of the combined hydraulic valve plate;

[0032] Figure 4 This is a cross-sectional view of the combined hydraulic valve plate.

[0033] In the diagram: Main valve plate 1, oil inlet 11, oil outlet 12, stacked valve plate assembly 2, side stacked valve plate 21, upper stacked valve plate 22, lower stacked valve plate 23, hydraulic valve assembly area 3, first hydraulic valve assembly area 31, 10-diameter hydraulic installation area 311, 25-diameter hydraulic installation area 312, second hydraulic valve assembly area 32, third hydraulic valve assembly area 33, fourth hydraulic valve assembly area 34, valve plate inner cavity 4, input cavity 41, output cavity 42, connecting part 5, main connecting part 51, auxiliary connecting part 52, positioning part 6, lifting hole 7. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0036] Depend on Figure 1 As shown, the right connecting surface of the main valve plate 1 is used to directly fit the die casting machine template structure for fixed installation, and the left side of the main valve plate 1 is used to fix and install with the side superimposed valve plate 21 in the superimposed valve plate group 2. The connecting surface of the two is provided with a main connecting portion 51, which is a fixing screw hole. There are multiple main connecting portions 51, which are dispersedly arranged on the connecting surface. Several positioning portions 6 are provided on the connecting surface of the side superimposed valve plate 21 and the main valve plate 1. Each positioning portion 6 is composed of a pair of positioning holes and a positioning pin. First, the two are plugged in and positioned to ensure the alignment of the main valve plate 1 and the side superimposed valve plate 21. Then, the two are fixed by connecting bolts. Auxiliary connecting portions 52 are also provided on the side superimposed valve plate 21, the upper superimposed valve plate 22 and the lower superimposed valve plate 23. The auxiliary connecting portions 52 can be used to install and fix the three together in the vertical direction, at which time the overall fixed connection between the main valve plate 1 and the superimposed valve plate group 2 is completed.

[0037] Depend on Figure 1 and Figure 2 As shown, a first hydraulic valve assembly area 31 is provided on the side of the main valve plate 1, a second hydraulic valve assembly area 32 is provided on the side of the side stack valve plate 21, a third hydraulic valve assembly area 33 is provided on the side of the upper stack valve plate 22, and a fourth hydraulic valve assembly area 34 is provided on the side of the lower stack valve plate 23. Each hydraulic valve assembly area 3 is used to install a hydraulic valve of a specific caliber. In this embodiment, the first hydraulic valve assembly area 31 includes a 10-caliber hydraulic installation area 311 and a 25-caliber hydraulic installation area 312; the second hydraulic valve assembly area 32 is provided with a 10-caliber hydraulic installation area and a 25-caliber hydraulic installation area; the third hydraulic valve assembly area 33 is provided with two 25-caliber hydraulic installation areas; and the fourth hydraulic valve assembly area 34 is provided with a 25-caliber hydraulic installation area. Among them, the 10-bore hydraulic valve installed on the 10-bore hydraulic installation area 311 in the first hydraulic valve assembly area 31 is mainly used for the quick clamping of mold and mold bridge function of the die casting machine, and the 25-bore hydraulic valve installed on the 25-bore hydraulic installation area 312 is mainly used for the ejector pin function. The pipelines for these functions need to be close to the die casting machine template surface, and the main valve plate 1 is the valve plate unit closest to the template surface.

[0038] Depend on Figure 1 and Figure 4As can be seen, after the four valve plates are installed and secured, their internal cavities 4 are interconnected via the oil passage holes on the connecting surfaces. O-rings can be added to seal the adjacent oil passage holes. This interconnectedness creates two independent oil delivery channels: an input lumen 41 and an output lumen 42. One end of the input lumen 41 communicates with the oil inlet 11 on the main valve plate 1, while one end of the output lumen 42 communicates with the oil outlet 12 on the main valve plate 1. These two channels also connect to the hydraulic valves installed in their respective hydraulic valve assembly areas 3, delivering hydraulic oil to each valve, enabling hydraulic operation of all valves.

[0039] In another possible embodiment, the stacked valve plate assembly 2 may also include other extended valve plates. The extended valve plates may be installed above the upper stacked valve plate 22 or below the lower stacked valve plate 23. Regardless of the number of extensions, the oil passage holes on the top and bottom valve plates need to be sealed with plugs to ensure normal oil pressure and no leakage. When extension is needed, the plugs should be removed for additional connection.

[0040] Because the overall mass of the hydraulic valve plate assembly is large, the assembly task cannot be effectively completed by manpower alone. Therefore, it is necessary to install lifting rings on the lifting hole 7 and use a crane or hoist for lifting operations to ensure both work efficiency and safety are improved.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined hydraulic valve plate, comprising a main valve plate (1) connected to a die casting machine template and a superimposed valve plate group (2) connected to one side of the main valve plate, wherein the top of the main valve plate (1) is provided with an oil inlet (11) and an oil outlet (12), characterized in that: The stacked valve plate group (2) comprises a side stacked valve plate (21) connected to one side of the main valve plate (1), an upper stacked valve plate (22) connected to the top surface of the side stacked valve plate (21), and a lower stacked valve plate (23) connected to the bottom surface of the side stacked valve plate (21); the main valve plate (1) is connected to the side stacked valve plate (21), the upper stacked valve plate (22), and the lower stacked valve plate (23) via an internal oil circuit.

2. A combined hydraulic valve plate according to claim 1, characterized in that: The combined hydraulic valve plate also comprises a hydraulic valve combination area (3), wherein the hydraulic valve combination area (3) comprises a first hydraulic valve combination area (31) arranged on the side of the main valve plate (1), a second hydraulic valve combination area (32) arranged on the side of the side stacking valve plate (21), a third hydraulic valve combination area (33) arranged on the side of the upper stacking valve plate (22), and a fourth hydraulic valve combination area (34) arranged on the side of the lower stacking valve plate (23).

3. A combined hydraulic valve plate according to claim 2, characterized in that: The arrangement directions of the second hydraulic valve combination area (32), the third hydraulic valve combination area (33) and the fourth hydraulic valve combination area (34) are all the same as the arrangement direction of the first hydraulic valve combination area (31).

4. A combined hydraulic valve plate according to claim 3, characterized in that: The first hydraulic valve combination area (31) comprises a plurality of 10-diameter hydraulic installation areas (311) and a plurality of 25-diameter hydraulic installation areas (312).

5. A combined hydraulic valve plate according to claim 2, characterized in that: The combined hydraulic valve plate also includes a valve plate inner tube cavity (4) for the circulation of hydraulic oil, wherein the valve plate inner tube cavity (4) includes an input tube cavity (41) connected to the oil inlet (11) and an output tube cavity (42) connected to the oil outlet (12); and the input tube cavity (41) and the output tube cavity (42) are both connected to the hydraulic valve combination area (3).

6. A combined hydraulic valve plate according to claim 1, characterized in that: The combined hydraulic valve plate also includes a connecting portion (5) for connecting each valve plate, wherein the connecting portion (5) includes a main connecting portion (51) for connecting the main valve plate (1) and the stacked valve plate group (2), and a secondary connecting portion (52) for connecting the side stacked valve plate (21) and the upper stacked valve plate (22) and the lower stacked valve plate (23).

7. The combined hydraulic valve plate according to claim 1, characterized in that: The combined hydraulic valve plate also comprises a positioning portion (6) arranged between the main valve plate (1) and the side stacked valve plate (21).

8. The combined hydraulic valve plate according to claim 4, characterized in that: The hydraulic valve assembly area (3) is also provided with a diameter conversion plate, and the diameter conversion plate is used to convert the 25-diameter hydraulic installation area (312) into the 10-diameter hydraulic installation area (311).

9. A combined hydraulic valve plate according to any one of claims 1 to 8, characterized in that: The top surface of the upper stacked valve plate (22) is provided with a lifting hole (7).

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