Double-oil-cylinder pressurizing structure

Abstract

The utility model relates to the technical field of pressurizing structures, in particular to a double-oil-cylinder pressurizing structure which comprises a main oil cylinder, a pressing plate is arranged at the telescopic end of the main oil cylinder, a connecting base is arranged at the top of the main oil cylinder, an auxiliary oil cylinder is arranged at the top of the connecting base, a main buffer block is arranged at the connecting position of the main oil cylinder and the connecting base, and a pressure plate is arranged at the telescopic end of the main oil cylinder. An auxiliary buffer block is arranged at the connecting position of the telescopic end of the auxiliary oil cylinder and the connecting base, a built-in oil bin is fixedly arranged on the auxiliary oil cylinder, a connecting frame is arranged on the built-in oil bin, and the connecting frame is connected with an external structure to fix the position of the built-in oil bin. The auxiliary oil cylinder fixed by the connecting frame telescopically extrudes the top of the main oil cylinder to carry out double-oil-cylinder pressurization, the main oil cylinder and the auxiliary oil cylinder are independently controlled, response is fast, precision is high, and the main oil cylinder and the auxiliary oil cylinder are fixedly connected through the connecting block arranged between the main oil cylinder and the auxiliary oil cylinder. And a main buffer block and an auxiliary buffer block are respectively arranged at the connecting position for bidirectional elastic buffering to reduce the hydraulic impact force.

Description

Technical Field

[0001] This utility model mainly relates to the field of pressure boosting structure technology, specifically a dual-cylinder pressure boosting structure. Background Technology

[0002] Hydraulic cylinders, also known as hydraulic cylinders, generate strong pressure to extrude products and are generally used as a pressure boosting structure in die-casting equipment. Current technology typically uses a single cylinder for pressure boosting. However, as the tonnage of die-casting equipment increases, the amount of hydraulic fluid required for pressure boosting also increases, leading to larger cylinder and piston sizes. For large-tonnage die-casting machines, using a single booster cylinder results in an excessively large and heavy piston, causing significant hydraulic shock during pressure boosting, which can easily damage the structure. Furthermore, it necessitates the use of larger diameter valves for control, resulting in slower response times and lower precision in oil flow rate control. Utility Model Content

[0003] The purpose of this invention is to provide a dual-cylinder booster structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a dual-cylinder booster structure, comprising a main cylinder, a pressure plate provided on the telescopic end of the main cylinder, a connecting seat provided on the top of the main cylinder, an auxiliary cylinder provided on the top of the connecting seat, a main buffer block provided at the connection position between the main cylinder and the connecting seat, an auxiliary buffer block provided at the connection position between the telescopic end of the auxiliary cylinder and the connecting seat, an internal oil tank fixedly provided on the auxiliary cylinder, a connecting frame provided on the internal oil tank, and the connecting frame connecting to an external structure to fix the position of the internal oil tank.

[0005] Preferably, the main cylinder includes a cylinder body, on which a piston rod is inserted. The piston rod serves as a telescopic end, with its bottom connected to a pressure plate and its top connected to a piston. A spring is sleeved on the piston rod, located within the cylinder body. An oil inlet is formed on the side wall of the cylinder body away from the piston rod. The oil inlet is connected to an external oil supply structure, through which external hydraulic oil is input into the cylinder body to drive the piston to compress the spring, thereby causing the piston rod to extend and retract vertically.

[0006] Furthermore, the cylinder body is made of high-strength metal, specifically No. 1 steel. This material choice enhances the cylinder body's strength, preventing damage from the bidirectional pressure of the external auxiliary cylinder and the internal hydraulic oil.

[0007] Furthermore, the auxiliary cylinder has a structure that is basically the same as the main cylinder. The difference is that the oil inlet of the auxiliary cylinder is connected to an internal oil supply pipe, which is connected to an internal oil tank. The bottom of the piston rod of the auxiliary cylinder is connected to an auxiliary buffer block, which is embedded inside the connecting seat. When the piston rod moves telescopically relative to the internal oil tank, it drives the connecting seat to move synchronously. The auxiliary cylinder is driven to work through the internal oil tank and the internal oil supply pipe, thereby causing the auxiliary buffer block to elastically squeeze the connecting seat to move telescopically relative to the internal oil tank.

[0008] Furthermore, there are two auxiliary cylinders, and the oil inlets on the two auxiliary cylinders are positioned opposite each other to connect to the two ends of the bottom of the built-in oil tank respectively. The position of the oil inlets is set so that the two auxiliary cylinders can evenly deliver hydraulic oil from the built-in oil tank.

[0009] Preferably, there are four main buffer blocks, which are distributed equidistantly in a circular array on the main oil cylinder. The lower half of any one of the main buffer blocks is embedded and fixed in the main oil cylinder, while the upper half is embedded and fixed in the connecting seat. The position of the main buffer blocks provides elastic buffering for the compression between the connecting seat and the main oil cylinder.

[0010] Preferably, the top of the connecting seat is also fixedly provided with two telescopic outer tubes, and a telescopic inner shaft is slidably provided inside any one of the telescopic outer tubes. Any one of the telescopic inner shafts is connected and fixed to the bottom of the built-in oil tank. The connection between the connecting seat and the built-in oil tank is reinforced by the cooperation of the telescopic outer tubes and the telescopic inner shafts.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model provides a dual-cylinder boosting structure, in which two auxiliary cylinders fixed by a connecting frame synchronously extend and retract to squeeze the top of the main cylinder, thereby achieving dual boosting in conjunction with the main cylinder itself. The oil inlet of the main cylinder is connected to an external oil supply structure, while the oil inlets of the two auxiliary cylinders are connected to both sides of the built-in oil tank for independent control. It has a fast response speed and high precision in adjusting the oil flow rate.

[0013] This utility model provides a dual-cylinder booster structure, which connects and fixes the main cylinder and the auxiliary cylinder respectively through a connecting block. The connection position is provided with a main buffer block and an auxiliary buffer block respectively to reduce the hydraulic impact force through bidirectional elastic buffering. Combined with the cylinder body made of No. 45 steel, the main cylinder can withstand bidirectional extrusion impact from the inside and outside.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0016] In the accompanying drawings of the instruction manual:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure at point A of this utility model;

[0020] Figure 4 This is an exploded view of the overall structure of this utility model;

[0021] Figure label:

[0022] 1. Main cylinder; 2. Connecting seat; 3. Auxiliary cylinder; 4. Internal oil tank; 5. Connecting frame; 6. Pressure plate; 7. Main buffer block; 8. Auxiliary buffer block; 9. Internal oil supply pipe; 10. Telescopic outer pipe; 11. Cylinder body; 12. Piston; 13. Oil inlet; 14. Piston rod; 15. Spring; 16. Telescopic inner shaft. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 4As shown, a dual-cylinder booster structure includes a main cylinder 1, a pressure plate 6 on the telescopic end of the main cylinder 1, a connecting seat 2 on the top of the main cylinder 1, an auxiliary cylinder 3 on the top of the connecting seat 2, a main buffer block 7 at the connection position between the main cylinder 1 and the connecting seat 2, an auxiliary buffer block 8 at the connection position between the telescopic end of the auxiliary cylinder 3 and the connecting seat 2, an internal oil tank 4 fixedly mounted on the auxiliary cylinder 3, and a connecting frame 5 mounted on the internal oil tank 4. The connecting frame 5 connects to an external structure to fix the position of the internal oil tank 4. The main cylinder 1 is larger than the auxiliary cylinder 3. Therefore, to avoid the structure being too heavy and affecting the suspension stability, the main cylinder 1 needs to rely on an external oil delivery structure with a larger capacity, while the auxiliary cylinder can use the internal oil tank 4 with a smaller capacity.

[0026] like Figure 2 As shown, the main hydraulic cylinder 1 includes a cylinder body 11, on which a piston rod 14 is inserted. The piston rod 14 serves as a telescopic end, with its bottom connected to a pressure plate 6 and its top connected to a piston 12. A spring 15 is sleeved on the piston rod 14 and is located inside the cylinder body 11. An oil inlet 13 is formed on the side wall of the cylinder body 11 away from the piston rod 14. The oil inlet 13 is connected to an external oil supply structure, through which external hydraulic oil is input into the cylinder body 11, driving the piston 12 to compress the spring 15. When the hydraulic oil leaves the cylinder body 11, the spring 15 elastically resets, lifting the piston 12, thereby controlling the piston rod 14 to extend and retract. A sealing ring is also fixedly installed on the bottom outer wall of the cylinder body 11 at the contact position with the piston rod 14 to prevent the hydraulic oil inside the cylinder body 11 from leaking out.

[0027] Furthermore, the cylinder body 11 is made of high-strength metal, specifically 45 steel. The strength of the cylinder body 11 is improved by the material setting, so as to avoid damage under the bidirectional extrusion of the external auxiliary oil cylinder 3 and the internal hydraulic oil.

[0028] like Figures 2 to 3 As shown, the auxiliary cylinder 3 has a structure that is basically the same as that of the main cylinder 1. The difference between the two is that the oil inlet 13 of the auxiliary cylinder 3 is connected to the built-in oil supply pipe 9. The built-in oil supply pipe 9 is connected to the built-in oil tank 4 and the flow state is controlled by the oil valve. The bottom of the piston rod 14 of the auxiliary cylinder 3 is connected to the auxiliary buffer block 8. The auxiliary buffer block 8 is embedded in the connecting seat 2. When the piston rod 14 moves telescopically relative to the built-in oil tank 4, it drives the connecting seat 2 to move synchronously. The auxiliary cylinder 3 is driven to work through the built-in oil tank 4 and the built-in oil supply pipe 9, thereby driving the auxiliary buffer block 8 to elastically squeeze the connecting seat 2 to move telescopically relative to the built-in oil tank 4. The main cylinder 1 and the auxiliary cylinder 3 are controlled by different structures, which results in fast response speed and high adjustment accuracy.

[0029] Furthermore, there are two auxiliary cylinders 3, and the oil inlets 13 on the two auxiliary cylinders 3 are positioned opposite each other so as to connect to the two ends of the bottom of the built-in oil tank 4 respectively. The position of the oil inlets 13 is set so that the two auxiliary cylinders 3 can evenly deliver hydraulic oil into the built-in oil tank 4.

[0030] like Figure 4 As shown, there are four main buffer blocks 7, which are distributed equidistantly in a circular array on the main oil cylinder 1. The lower half of any one of the main buffer blocks 7 is embedded and fixed in the main oil cylinder 1, while the upper half is embedded and fixed in the connecting seat 2. The position of the main buffer blocks 7 provides elastic buffering for the compression between the connecting seat 2 and the main oil cylinder 1.

[0031] like Figure 4 As shown, two telescopic outer tubes 10 are fixedly installed on the top of the connecting seat 2. A telescopic inner shaft 16 is slidably installed inside any one of the telescopic outer tubes 10. Any one of the telescopic inner shafts 16 is connected and fixed to the bottom of the built-in oil tank 4. The two telescopic outer tubes 10 and the two auxiliary oil cylinders 3 are arranged in a cross shape, so that the force between the connecting seat 2 and the built-in oil tank 4 is more balanced. The connection between the connecting seat 2 and the built-in oil tank 4 is reinforced by the cooperation of the telescopic outer tubes 10 and the telescopic inner shaft 16.

[0032] The implementation principle of this application embodiment is as follows: When this structure is used, the whole is connected and suspended to the external structure by the connecting frame 5. The external hydraulic oil enters the main oil cylinder 1 from the lower oil inlet 13, driving the piston rod 14 to press down, thereby giving the pressure plate 6 a first boost. At the same time, the built-in oil tank 4 sends the hydraulic oil into the auxiliary oil cylinder 3 along the built-in oil supply pipe 9 and the upper oil inlet 13, driving the auxiliary buffer block 8 to press down, thereby giving the pressure plate 6 a second boost. The two oil cylinders are independently controlled, with fast response speed and high control accuracy. In the process of double boosting, the main buffer block 7 and the auxiliary buffer block 8 on the connecting block provide bidirectional elastic buffering to reduce the hydraulic impact force. Combined with the cylinder body 11 made of No. 45 steel, the main oil cylinder 1 can withstand bidirectional extrusion impact from the inside and outside, and is not easily damaged.

[0033] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from its essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double cylinder pressurization structure comprising a main cylinder (1), a press plate (6) being arranged on the telescopic end of the main cylinder (1), characterized in that: The top of the main oil cylinder (1) is provided with a connecting seat (2), the top of the connecting seat (2) is provided with an auxiliary oil cylinder (3), the connecting position of the main oil cylinder (1) and the connecting seat (2) is provided with a main buffer block (7), the connecting position of the auxiliary oil cylinder (3) and the connecting seat (2) is provided with an auxiliary buffer block (8), the auxiliary oil cylinder (3) is fixedly provided with an internal oil tank (4), the internal oil tank (4) is provided with a connecting frame (5), and the connecting frame (5) is connected with an external structure to fix the position of the internal oil tank (4).

2. A dual ram boost structure according to claim 1, wherein: The main oil cylinder (1) comprises a cylinder body (11), a piston rod (14) is inserted in the cylinder body (11), the bottom of the piston rod (14) is connected with a pressing plate (6) as a telescopic end, and the top of the piston rod (14) is connected with a piston (12); a spring (15) is sleeved on the piston rod (14) and located in the cylinder body (11); an oil inlet (13) is formed in the side wall of the cylinder body (11) away from the piston rod (14); and the oil inlet (13) is connected with an external oil conveying structure.

3. A twin ram intensifier according to claim 2, wherein: The material of the cylinder body (11) is high-strength metal, specifically 45 steel.

4. The dual ram pressurization structure of claim 2, wherein: The auxiliary oil cylinder (3) has basically the same structure as the main oil cylinder (1), and the difference between the two is that the oil inlet (13) of the auxiliary oil cylinder (3) is connected with an internal oil conveying pipe (9), the internal oil conveying pipe (9) is connected with the internal oil tank (4), and the bottom of the piston rod (14) of the auxiliary oil cylinder (3) is connected with the auxiliary buffer block (8), which is embedded in the connecting seat (2), so that the connecting seat (2) moves synchronously when the piston rod (14) moves relative to the internal oil tank (4).

5. A twin ram intensifier according to claim 4, wherein: The number of the auxiliary oil cylinder (3) is two, and the positions of the oil inlets (13) of the two auxiliary oil cylinders (3) are opposite to each other, so as to be connected with the two end positions of the bottom of the internal oil tank (4) respectively.

6. The dual ram pressurization structure of claim 1, wherein: The number of the main buffer block (7) is four, and the four main buffer blocks (7) are distributed in a circumferential array at equal intervals on the main oil cylinder (1), the lower half of any one of the main buffer blocks (7) is embedded and fixed in the main oil cylinder (1), and the upper half is embedded and fixed in the connecting seat (2).

7. The dual ram pressurization structure of claim 1, wherein: The top of the connecting seat (2) is also fixedly provided with two telescopic outer pipes (10), a telescopic inner shaft (16) is slidably arranged in any one of the telescopic outer pipes (10), and the bottom of the telescopic inner shaft (16) is fixedly connected with the internal oil tank (4).

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