Static pressure line small-area multi-contact hydraulic cylinder integration module

Abstract

The utility model relates to a static pressure line small-area multi-contact hydraulic cylinder integration module. The upper manifold block is connected with the upper ends of the multiple hydraulic cylinders at the same time; the lower manifold block is connected with the lower ends of the multiple hydraulic cylinders at the same time; the multiple piston rods are vertically arranged in the hydraulic cylinders in a sliding mode respectively, and the lower ends of the piston rods penetrate through the lower manifold block; the contacts are arranged at the lower ends of the multiple piston rods respectively; an oil inlet pipeline communicated with the upper ends of the hydraulic cylinders is arranged in the upper manifold block; an oil outlet pipeline communicated with the lower ends of the hydraulic cylinders is arranged in the lower integrated block; the upper ends and the lower ends of the hydraulic cylinders are connected through the integrated blocks respectively, the center distance between the adjacent hydraulic cylinders can be reduced, the contact area is reduced, meanwhile, oil is supplied to the hydraulic cylinders in a unified mode through the oil inlet pipelines, the pressure of the hydraulic cylinders is the same, sand molds can be compacted for individual small-area and deep places of a model, and the production efficiency is improved. And the problem that the sand mold in individual places becomes virtual is solved.

Description

Technical Field

[0001] This utility model relates to the field of hydrostatic molding technology, and specifically to an integrated module for a small-area multi-contact hydraulic cylinder for hydrostatic molding lines. Background Technology

[0002] Static pressure lines are currently widely used in the foundry industry. Multi-contact molding is the core part of the molding process. The quality of the molding, especially the hardness and density uniformity of the sand mold, is an important factor in improving the quality of castings.

[0003] Many Chinese enterprises use hydrostatic pressing lines for production, such as Figure 1 As shown, most of them use multi-contact sand molds with a single contact area of ​​100mm*100mm or more. When the sand box edges and shapes are complex and the model heights vary greatly, some sand molds are not solid and the difference is large, which seriously affects the quality of the finished product.

[0004] The most effective way to solve these problems is to reduce the contact area, but if... Figure 1 As shown, each individual hydraulic cylinder 11 is connected to the fixed plate 13 by a flange 12. This limits the size range of the center distance between the two hydraulic cylinders 11, and the distance between the two contacts 14 cannot be too large, so the area of ​​the contacts 14 cannot be made very small. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an integrated module for a small-area multi-contact hydraulic cylinder for static pressure lines.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a small-area multi-contact hydraulic cylinder integrated module for hydrostatic lines, comprising multiple vertically placed hydraulic cylinders, an upper integrated block connected to the upper ends of the multiple hydraulic cylinders, a lower integrated block connected to the lower ends of the multiple hydraulic cylinders, multiple piston rods respectively vertically slidably disposed within the hydraulic cylinders and with their lower ends passing through the lower integrated block, and contacts respectively disposed at the lower ends of the multiple piston rods; the upper integrated block is provided with an oil inlet pipe communicating with the upper ends of the multiple hydraulic cylinders; the lower integrated block is provided with an oil outlet pipe communicating with the lower ends of the multiple hydraulic cylinders.

[0007] Preferably, the plurality of hydraulic cylinders are arranged in a matrix.

[0008] Preferably, the oil inlet pipes are arranged in a crisscross pattern; at least one oil inlet pipe connected to the oil inlet pipes is provided on the top of the upper integrated block.

[0009] Preferably, the oil outlet pipes are arranged in a crisscross pattern and are staggered from the multiple hydraulic cylinders; the top of the upper integrated block is provided with at least one oil outlet pipe that communicates with the oil outlet pipes.

[0010] Preferably, the lower integrated block is provided with multiple threaded holes that are staggered from the hydraulic cylinders and oil outlet pipes; the upper integrated block is provided with multiple through holes corresponding to the threaded holes, and the upper and lower integrated blocks are fixed to the upper and lower ends of the multiple hydraulic cylinders respectively by passing through the through holes and connecting to the threaded holes with extended bolts.

[0011] Preferably, the upper and lower integrated blocks are provided with seals at the connection points between the upper and lower integrated blocks and the upper and lower ends of the multiple hydraulic cylinders, and at the connection points between the piston rod and the hydraulic cylinders and the lower integrated block.

[0012] Preferably, it also includes a housing with openings at the top and bottom; multiple hydraulic cylinders are disposed inside the housing; the upper and lower ends of the housing are respectively connected to the upper integrated block and the lower integrated block.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] 1. In this utility model, the upper and lower ends of multiple hydraulic cylinders are connected by integrated blocks, which not only reduces the center distance between adjacent hydraulic cylinders, reduces the contact area, and improves the quality of finished products, but also facilitates installation.

[0015] 2. In this utility model, multiple hydraulic cylinders are supplied with oil through a unified oil inlet pipeline, so that the pressure of multiple hydraulic cylinders is the same. That is, the pressure of each contact can remain the same regardless of the height of the model. Even in some small and deep areas of the model, the sand mold can be compacted, thus solving the problem of the sand mold being weak in some places. Attached Figure Description

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0017] Appendix Figure 1 This is a schematic diagram of the installation using existing technology;

[0018] Appendix Figure 2 This is a front view of Embodiment 1 of this utility model;

[0019] Appendix Figure 3 This is a longitudinal sectional view of Embodiment 1 of this utility model;

[0020] Appendix Figure 4 This is a cross-sectional view of Embodiment 1 of this utility model;

[0021] Appendix Figure 5 This is a horizontal sectional view of the upper integrated block in Embodiment 1 of this utility model;

[0022] Appendix Figure 6 This is a perspective view of Embodiment 1 of this utility model;

[0023] Appendix Figure 7 This is a longitudinal sectional view of Embodiment 2 of this utility model;

[0024] Appendix Figure 8 This is a cross-sectional view of Embodiment 2 of this utility model.

[0025] The components are as follows: 11. Hydraulic cylinder; 12. Flange; 13. Fixing plate; 14. Contact; 21. Hydraulic cylinder; 22. Upper integrated block; 221. Oil inlet pipe; 2211. Main oil inlet channel; 2212. Branch oil inlet channel; 222. Through hole; 23. Lower integrated block; 231. Oil outlet pipe; 232. Threaded hole; 24. Piston rod; 25. Contact; 26. Oil inlet pipe; 27. Oil outlet pipe; 28. Extension bolt; 29. ​​Housing; 31. Integrated body; 32. Upper integrated cover plate; 33. Hydraulic cavity; 34. Piston rod; 35. Oil inlet pipe; 36. Oil outlet pipe. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Example 1:

[0028] Appendix Figure 2-6 The hydrostatic line small-area multi-contact hydraulic cylinder integrated module of this utility model includes multiple vertically placed hydraulic cylinders 21, an upper integrated block 22 connected to the upper ends of the multiple hydraulic cylinders 21, a lower integrated block 23 connected to the lower ends of the multiple hydraulic cylinders 21, multiple piston rods 24 respectively vertically slidingly arranged in the hydraulic cylinders 21 and passing through the lower integrated block 23, and contacts 25 respectively arranged at the lower ends of the multiple piston rods 24; the upper integrated block 22 is provided with an oil inlet pipe 221 communicating with the upper ends of the multiple hydraulic cylinders 21; the lower integrated block 23 is provided with an oil outlet pipe 231 communicating with the lower ends of the multiple hydraulic cylinders 21.

[0029] In this embodiment, nine hydraulic cylinders 21 are arranged in a 3×3 matrix. Since the machine head specifications of the multi-contact heads of different hydrostatic lines are different, the hydraulic cylinders 21 can be arbitrarily combined into machine heads of the required size to adapt to the needs of different production lines, such as 2×3, 3×3, 3×4, 4×4, 4×5 and other matrix arrangements.

[0030] Furthermore, the oil inlet pipes 221 are arranged in a staggered pattern, including one main oil inlet channel 2211 and three branch oil inlet channels 2212; each branch oil inlet channel 2212 is connected to three hydraulic cylinders 21 in the same row or column, while the main oil inlet channel 2211 is connected to the three branch oil inlet channels 2212 at the same time; the top of the upper integrated block 22 is provided with an oil inlet pipe 26 connected to the oil inlet pipes 221.

[0031] In this embodiment, two oil inlet pipes 26 are provided, which are respectively located at the intersection of the main oil inlet channel 2211 and the two outer branch oil inlet channels 2212, so that the oil inlet is more uniform.

[0032] Furthermore, the oil outlet pipes 231 are arranged in a grid pattern and staggered from the nine hydraulic cylinders 21, including two horizontal oil outlet channels and two vertical oil outlet channels; the two horizontal oil outlet channels and the two vertical oil outlet channels are respectively arranged between the three rows or three columns of hydraulic cylinders 21; the top of the upper integrated block 22 is provided with an oil outlet pipe 27 that communicates with the oil outlet pipes 231.

[0033] In this embodiment, two oil outlet pipes 27 are provided, which are respectively located at the two diagonal intersections of the two transverse oil outlet channels and the two longitudinal oil outlet channels, so as to make the oil outlet more uniform.

[0034] Furthermore, the lower integrated block 23 is provided with ten threaded holes 232 that are staggered from the hydraulic cylinders 21 and the oil outlet pipes 231; the upper integrated block 22 is provided with ten through holes 222 that correspond to the threaded holes 232. The upper integrated block 22 and the lower integrated block 23 are connected to the threaded holes 232 by passing through the through holes 222 with extension bolts 28, so that the upper integrated block 22 and the lower integrated block 23 are respectively fixed at the upper and lower ends of the nine hydraulic cylinders 21.

[0035] Furthermore, seals are provided at the upper and lower ends of the upper integrated block 22 and the lower integrated block 23 where they connect to the nine hydraulic cylinders 21, and at the connection between the piston rod 24 and the hydraulic cylinders 21 and the lower integrated block 23, to increase the sealing performance.

[0036] Furthermore, it also includes a housing 29 with openings at the top and bottom; all nine hydraulic cylinders 21 are disposed inside the housing 29; the upper and lower ends of the housing 29 are respectively fixed to the upper integrated block 22 and the lower integrated block 23 by screws, which not only serves a protective function but also a sealing function.

[0037] Example 2:

[0038] like Figure 7-8 The static pressure line small-area multi-contact hydraulic cylinder integrated module of this utility model includes an integrated body 31, an upper integrated cover plate 32 disposed on the upper end of the integrated body 31, multiple hydraulic cavities 33 vertically disposed within the integrated body 31, multiple piston rods 34 vertically slidably disposed within the hydraulic cavities 33 and with their lower ends passing through the lower end of the integrated body 31, and contacts disposed at the lower ends of the multiple piston rods 34; the upper integrated cover plate 32 is provided with an oil inlet pipe 35 communicating with the upper ends of the multiple hydraulic cavities 33; the lower end of the integrated body 31 is provided with an oil outlet pipe 36 communicating with the lower ends of the multiple hydraulic cavities 33; the upper integrated cover plate 32 is fixed to the integrated body 31 by multiple bolts.

[0039] This invention, through its integrated approach, not only reduces the center distance between adjacent hydraulic cylinders, thereby reducing the contact area, but also ensures uniform oil supply and discharge through inlet and outlet pipelines, resulting in consistent pressure across multiple hydraulic cylinders. This means that each contact maintains the same pressure regardless of the height of the model it encounters, and can also compact the sand mold in small and deep areas of the model, thus solving the problem of the sand mold being weak in certain places.

[0040] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A small-area multi-contact hydraulic cylinder integrated module for hydrostatic lines, characterized in that: It includes multiple vertically placed hydraulic cylinders, an upper integrated block connected to the upper ends of the multiple hydraulic cylinders, a lower integrated block connected to the lower ends of the multiple hydraulic cylinders, multiple piston rods that are vertically slidably arranged inside the hydraulic cylinders and whose lower ends pass through the lower integrated block, and contacts that are respectively arranged at the lower ends of the multiple piston rods; the upper integrated block is provided with an oil inlet pipe communicating with the upper ends of the multiple hydraulic cylinders; the lower integrated block is provided with an oil outlet pipe communicating with the lower ends of the multiple hydraulic cylinders.

2. The integrated module for a small-area multi-contact hydraulic cylinder in a hydrostatic line according to claim 1, characterized in that: The hydraulic cylinders are arranged in a matrix.

3. The integrated module for a small-area multi-contact hydraulic cylinder in a hydrostatic line according to claim 2, characterized in that: The oil inlet pipes are arranged in a crisscross pattern; at least one oil inlet pipe connected to the oil inlet pipe is provided on the top of the upper integrated block.

4. The integrated module for a small-area multi-contact hydraulic cylinder in a hydrostatic line according to claim 2, characterized in that: The oil outlet pipes are arranged in a crisscross pattern and are staggered from multiple hydraulic cylinders; the top of the upper integrated block is provided with at least one oil outlet pipe that is connected to the oil outlet pipes.

5. The integrated module for a small-area multi-contact hydraulic cylinder in a hydrostatic line according to claim 1, characterized in that: The lower integrated block is provided with multiple threaded holes that are staggered from the hydraulic cylinders and oil outlet pipes; the upper integrated block is provided with multiple through holes corresponding to the threaded holes. By passing an extension bolt through the through hole and connecting it to the threaded hole, the upper and lower integrated blocks are respectively fixed to the upper and lower ends of multiple hydraulic cylinders.

6. The integrated module for a small-area multi-contact hydraulic cylinder in a hydrostatic line according to claim 1, characterized in that: Sealing elements are provided at the connection points between the upper and lower integrated blocks and the upper and lower ends of the multiple hydraulic cylinders, as well as at the connection points between the piston rod and the hydraulic cylinders and the lower integrated block.

7. The hydrostatic line small-area multi-contact hydraulic cylinder integrated module according to any one of claims 1-6, characterized in that: It also includes a housing with openings at the top and bottom; multiple hydraulic cylinders are disposed inside the housing; the upper and lower ends of the housing are respectively connected to the upper integrated block and the lower integrated block.

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