Oil cylinder capable of being used for integrated installation

Abstract

The utility model provides an oil cylinder capable of being used for integrated installation, and relates to the technical field of oil cylinders. The hydraulic cylinder comprises a piston rod, a fixing unit and a cylinder body, the top of the piston rod is connected with the fixing unit and connected to an integrated plate through the fixing unit, a plug cavity oil port and a rod cavity oil port are formed in the top of the piston rod, and the plug cavity oil port and the rod cavity oil port can be communicated with an oil way arranged in the integrated plate. The cylinder body is movably connected to the outer side of the piston rod and movably connected with the pressing plate, the fixing unit is arranged, the piston rod can be installed on the integrated plate through the fixing unit, the piston rod is kept relatively static, then the cylinder body moves to achieve compaction operation of the oil cylinder, and the piston cavity oil port and the rod cavity oil port are directly formed in the top of the piston rod. The integrated board is directly communicated with an oil way arranged in the integrated board, a complex oil pipe structure is omitted, the overall structural form is more concise and more attractive, and meanwhile the failure rate is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to an oil cylinder which can be used for integrated installation. Background Art

[0002] When the molding machine is compacting the sand mold, a pressing plate and a cylinder are needed. Both the pressing plate and the cylinder can squeeze the sand mold. When a large number of cylinders are used, all the cylinders are fixed by setting an integrated plate.

[0003] The applicant has found that there are at least the following technical problems in the prior art: each existing oil cylinder needs to be equipped with a separate oil pipe. When the number of oil cylinders is large, a very complex oil pipe structure will be formed in multiple spaces. The overall structure is messy and disordered, which is not only not beautiful, but also has a high failure rate and is very difficult to repair. Utility Model Content

[0004] The purpose of the utility model is to provide an oil cylinder that can be used for integrated installation, so as to solve the technical problems existing in the prior art that the oil pipe structure is relatively complex, the form is disordered, not only not beautiful, but also has a high failure rate and is very difficult to repair. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cylinder that can be used for integrated installation, includes a piston rod, a fixing unit and a cylinder body, the top of the piston rod is connected to the fixing unit and is connected to an integrated plate through the fixing unit, the top of the piston rod is provided with a plug chamber oil port and a rod chamber oil port, the plug chamber oil port and the rod chamber oil port can be connected to an oil circuit provided inside the integrated plate, the cylinder body is movably connected to the outside of the piston rod and is movably connected to a pressure plate.

[0007] Preferably, the fixing unit comprises a support ring and a first fixing flange, the support ring is connected to the top of the piston rod, and the integrated plate, the support ring and the first fixing flange are connected in sequence from top to bottom.

[0008] Preferably, a fixing groove is formed on the outer wall of the piston rod, and the support ring comprises two semicircular ring bodies, which are butted on the fixing groove to connect the support ring to the piston rod.

[0009] Preferably, it further comprises a pressing block, which is detachably connected to the bottom of the cylinder body.

[0010] Preferably, a rotation-stopping unit is further included, and the piston rod and the cylinder body are jointly provided with the rotation-stopping unit, and the rotation-stopping unit can prevent the relative rotation between the piston rod and the cylinder body.

[0011] Preferably, the anti-rotation unit includes an anti-rotation rod and an anti-rotation ring, the anti-rotation rod is connected to the cylinder body, the anti-rotation ring is connected to the piston rod, and the anti-rotation ring is connected to the anti-rotation rod and can limit the rotation of the anti-rotation rod.

[0012] Preferably, a sealing ring groove is formed at the top of the piston rod on the outside of the plug chamber oil port and on the outside of the rod chamber oil port, and a first sealing ring is arranged in the sealing ring groove.

[0013] Preferably, a positioning pin hole is provided at the top of the piston rod and a positioning guide is formed with the integrated plate through the positioning pin.

[0014] Preferably, a sealing unit is further included, wherein the sealing unit is connected to the pressure plate and can form a seal with the cylinder body.

[0015] Preferably, the sealing unit comprises a second sealing ring and a second fixing flange, the second fixing flange is connected to the pressure plate, and the second sealing ring is arranged between the second fixing flange, the pressure plate and the cylinder body.

[0016] The beneficial effects of the utility model are as follows: by providing a fixing unit, the fixing unit can mount the piston rod on the integrated board, so that the piston rod remains relatively still, and then the compaction operation of the oil cylinder is realized by moving the cylinder body, and the plug chamber oil port and the rod chamber oil port are directly arranged on the top of the piston rod, and are directly connected to the oil circuit arranged inside the integrated board, eliminating the complex oil pipe structure, and the overall structural form is simpler and more beautiful, while effectively reducing the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural diagram of the connection between the oil cylinder, the integrated plate and the pressure plate of the utility model;

[0019] Figure 2 This is a structural diagram of the oil cylinder of the utility model;

[0020] Figure 3 This is a top view of the oil cylinder of the utility model;

[0021] In the figure, 1 is the piston rod; 11 is the plug chamber oil port; 12 is the rod chamber oil port; 13 is the sealing ring groove; 14 is the positioning pin hole;

[0022] 2. Fixing unit; 21. Support ring; 22. First fixing flange;

[0023] 3. Cylinder body;

[0024] 4. Integrated board;

[0025] 5. Press plate;

[0026] 6. Briquetting;

[0027] 7. anti-rotation unit; 71. anti-rotation rod; 72. anti-rotation ring;

[0028] 8. Sealing unit; 81. Second sealing ring; 82. Second fixing flange. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or location relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] Reference Figures 1 to 3The utility model provides an oil cylinder that can be used for integrated installation, including a piston rod 1, a fixing unit 2 and a cylinder body 3. The top of the piston rod 1 is connected to the fixing unit 2 and is connected to the integrated board 4 through the fixing unit 2. The piston rod 1 remains relatively still relative to the integrated board 4. The top of the piston rod 1 is provided with a plug cavity oil port 11 and a rod cavity oil port 12. The plug cavity oil port 11 and the rod cavity oil port 12 can be connected to the oil circuit provided inside the integrated board 4. The cylinder body 3 is movably connected to the outside of the piston rod 1 and is movably connected to the pressure plate 5. After the plug cavity oil port 11 or the rod cavity oil port 12 is filled with oil, the cylinder body 3 can move relative to the piston rod 1, thereby realizing the compaction operation of the oil cylinder.

[0033] By providing a fixing unit 2, the fixing unit 2 can install the piston rod 1 on the integrated board 4, so that the piston rod 1 remains relatively still, and then the compaction operation of the cylinder is realized by moving the cylinder body 3, and the plug chamber oil port 11 and the rod chamber oil port 12 are directly arranged on the top of the piston rod 1, and are directly connected to the oil circuit arranged inside the integrated board 4, eliminating the complex oil pipe structure, and the overall structural form is simpler and more beautiful, while effectively reducing the failure rate.

[0034] When the number of oil cylinders is large, each individual oil cylinder can be installed on the integrated board 4 according to the above-mentioned structural form, so that the integrated board 4 can truly integrate a large number of oil cylinders, and all the plug cavity oil ports 11 and the rod cavity oil ports 12 are also located at the top. On this basis, by reasonably designing the oil circuit inside the integrated board 4, the oil circuit can be saved to the greatest extent;

[0035] In addition, multiple cylinders are integrated on an integrated board 4. The cylinders can be uniformly controlled by a single oil circuit, or different cylinders can be assigned to different oil circuits for multi-way control. Driven by an external hydraulic station, when the hydraulic oil enters the plug chamber oil port 11, the cylinder retracts, and when the hydraulic oil enters the rod chamber oil port 12, the cylinder extends. By uniformly controlling the plug chamber oil port 11 and the rod chamber oil port 12 or performing multi-way control, the extension and retraction actions of all cylinders can be controlled.

[0036] As an optional implementation, the fixing unit 2 includes a support ring 21 and a first fixing flange 22, the support ring 21 is connected to the top of the piston rod 1, the integrated plate 4, the support ring 21 and the first fixing flange 22 are connected in sequence from top to bottom, and the flange connection has good connection strength and is easy to disassemble and assemble.

[0037] As an optional implementation, a fixing groove is provided on the outer wall of the piston rod 1, and the support ring 21 includes two semi-circular rings, which are docked on the fixing groove to connect the support ring 21 to the piston rod 1. Due to the structural characteristics of the piston rod 1, it is connected to the integrated board 4, and a support ring 21 for fixing needs to be installed on its structure. Therefore, a complete circular ring is split into two semi-circular rings, which is easier to install in practice.

[0038] As an optional embodiment, it also includes a pressing block 6, which is detachably connected to the bottom of the cylinder body 3, and can be further preferably connected by bolts. When the cylinder is working, the pressing block 6 is located at the bottom of the cylinder and will actually be in extrusion contact with the sand;

[0039] In this embodiment, the shape of the pressing block 6 is not specifically limited, and can be round or square. The manufacturer can flexibly select and set it according to actual use requirements;

[0040] Since the pressing block 6 is prone to wear and damage after long-term use, the detachable connection mode allows the pressing block 6 to be replaced after a certain period of use, or the shape of the pressing block 6 can be changed according to actual use requirements;

[0041] In addition, after the pressing block 6 is connected to the cylinder body 3 , the pressing block 6 and the cylinder body 3 can achieve synchronous movement.

[0042] As an optional implementation, since the shape of the pressing block 6 is not specifically limited, if the pressing block 6 is square, the rotating pressing block 6 is easy to damage the sand mold after contacting the sand, so the oil cylinder that can be used for integrated installation also includes a rotation-stop unit 7, and the piston rod 1 and the cylinder body 3 are jointly provided with the rotation-stop unit 7, and the rotation-stop unit 7 can prevent the relative rotation between the piston rod 1 and the cylinder body 3. Since the cylinder body 3 and the pressing block 6 move synchronously, the relative rotation of the pressing block 6 can be avoided, thereby preventing the sand mold from being damaged;

[0043] If the shape of the pressing block 6 is circular, the shape of the pressing block 6 after rotating in place is still circular. In this state, the anti-rotation unit 7 may not be provided. However, since the rotation of the pressing block 6 will cause more wear and consumption, if the shape of the pressing block 6 is circular, the anti-rotation unit 7 is also preferably provided.

[0044] As an optional embodiment, the anti-rotation unit 7 includes an anti-rotation rod 71 and an anti-rotation ring 72, the anti-rotation rod 71 is connected to the cylinder body 3, the anti-rotation ring 72 is connected to the piston rod 1, and the anti-rotation ring 72 is connected to the anti-rotation rod 71 and can limit the rotation of the anti-rotation rod 71, thereby preventing the relative rotation between the piston rod 1 and the cylinder body 3;

[0045] The specific structural forms of the anti-rotation rod 71 and the anti-rotation ring 72 can be flexibly set. It only needs to limit the rotation of the anti-rotation rod 71 through the anti-rotation ring 72, and no specific restrictions are made.

[0046] As an optional implementation, a sealing ring groove 13 is opened at the top of the piston rod 1 on the outside of the plug chamber oil port 11 and the outside of the rod chamber oil port 12, and a first sealing ring is arranged in the sealing ring groove 13. The first sealing ring can form a seal between the plug chamber oil port 11 and the integrated plate 4 and between the rod chamber oil port 12 and the integrated plate 4.

[0047] As an optional implementation, a locating pin hole 14 is provided at the top of the piston rod 1, and preferably a locating pin shaft is also provided on the integrated plate 4. When the piston rod 1 is installed on the integrated plate 4, the locating pin hole 14 and the locating pin shaft on the integrated plate 4 can be used to form a locating guide, thereby facilitating the installation and positioning of the piston rod 1.

[0048] As an optional implementation, since the airflow suspended sand shooting method easily causes sand to enter the fitting gap between the pressure plate 5 and the cylinder body 3 during the subsequent sand shooting process, the oil cylinder that can be used for integrated installation also includes a sealing unit 8, which is connected to the pressure plate 5 and can form a seal for the cylinder body 3. The sealing unit 8 can effectively prevent sand from entering the fitting gap between the pressure plate 5 and the cylinder body 3, avoid sand from getting stuck in the cylinder body 3, and ensure smooth movement of the cylinder body 3 relative to the pressure plate 5.

[0049] As an optional implementation, the sealing unit 8 includes a second sealing ring 81 and a second fixed flange 82. The second fixed flange 82 is connected to the pressure plate 5. The flange connection has good connection strength and is easy to disassemble and assemble. The second sealing ring 81 is arranged between the second fixed flange 82, the pressure plate 5 and the cylinder body 3. The second sealing ring 81 can effectively prevent sand from entering the fitting gap between the pressure plate 5 and the cylinder body 3, avoid sand from jamming the cylinder body 3, and ensure smooth movement of the cylinder body 3 relative to the pressure plate 5.

[0050] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A cylinder that can be used for integrated installation, characterized in that: The invention comprises a piston rod (1), a fixing unit (2) and a cylinder body (3); the top of the piston rod (1) is connected to the fixing unit (2) and is connected to an integrated board (4) through the fixing unit (2); the top of the piston rod (1) is provided with a plug chamber oil port (11) and a rod chamber oil port (12); the plug chamber oil port (11) and the rod chamber oil port (12) can be connected to an oil circuit provided inside the integrated board (4); the cylinder body (3) is movably connected to the outside of the piston rod (1) and is movably connected to a pressure plate (5).

2. The oil cylinder that can be used for integrated installation according to claim 1, characterized in that: The fixing unit (2) comprises a support ring (21) and a first fixing flange (22), the support ring (21) being connected to the top of the piston rod (1), and the integrated plate (4), the support ring (21) and the first fixing flange (22) being connected in sequence from top to bottom.

3. The oil cylinder that can be used for integrated installation according to claim 2, characterized in that: A fixing groove is provided on the outer wall of the piston rod (1), and the support ring (21) comprises two semi-circular ring bodies, which are butt-jointed on the fixing groove to connect the support ring (21) to the piston rod (1).

4. The oil cylinder that can be used for integrated installation according to claim 1, characterized in that: It also comprises a pressing block (6), wherein the pressing block (6) is detachably connected to the bottom of the cylinder body (3).

5. The oil cylinder that can be used for integrated installation according to claim 1, characterized in that: It also comprises a rotation-stopping unit (7), which is provided on the piston rod (1) and the cylinder body (3) and can prevent the relative rotation between the piston rod (1) and the cylinder body (3).

6. The oil cylinder that can be used for integrated installation according to claim 5, characterized in that: The anti-rotation unit (7) comprises an anti-rotation rod (71) and an anti-rotation ring (72), wherein the anti-rotation rod (71) is connected to the cylinder body (3), the anti-rotation ring (72) is connected to the piston rod (1), and the anti-rotation ring (72) is connected to the anti-rotation rod (71) and can limit the rotation of the anti-rotation rod (71).

7. The oil cylinder that can be used for integrated installation according to claim 1, characterized in that: The top of the piston rod (1) is provided with a sealing ring groove (13) on the outside of the plug chamber oil port (11) and on the outside of the rod chamber oil port (12), and a first sealing ring is arranged in the sealing ring groove (13).

8. The oil cylinder that can be used for integrated installation according to claim 1, characterized in that: A positioning pin hole (14) is provided on the top of the piston rod (1) and a positioning guide is formed with the integrated plate (4) through the positioning pin.

9. The oil cylinder that can be used for integrated installation according to claim 1, characterized in that: It also comprises a sealing unit (8), which is connected to the pressure plate (5) and can form a seal with the cylinder body (3).

10. The oil cylinder that can be used for integrated installation according to claim 9, characterized in that: The sealing unit (8) comprises a second sealing ring (81) and a second fixing flange (82), wherein the second fixing flange (82) is connected to the pressure plate (5), and the second sealing ring (81) is arranged between the second fixing flange (82), the pressure plate (5) and the cylinder body (3).

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