An oil collector structure

Abstract

The utility model discloses a kind of oil collector structures, it is characterized by: including first cylinder head, oil collector cylinder body, second cylinder head, movable block, the first cylinder head is set in one end of the oil collector cylinder body, the second cylinder head is set in the other end of the oil collector cylinder body, the movable cavity is in the cylinder body, the movable block is slidably arranged in the movable cavity, the first cylinder head has the positive oil inlet of the communication movable cavity, the second cylinder head has the reverse oil inlet of the communication movable cavity, the cylinder body has positive first-stage oil outlet, positive second-stage oil outlet, reverse first-stage oil outlet, reverse second-stage oil outlet, the beneficial effects of the utility model include: meet the demand of insufficient die casting machine oil cylinder interface, different oil cylinder sequence core-pulling action can be realized simultaneously, high oil pressure requirement can also be met when needing to core-pulling with great force in multiple groups of oil cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic systems, specifically to an oil collector structure. Background Technology

[0002] In the field of hydraulic systems for die-casting machines, the coordinated operation of multiple cylinders is a core technological aspect for achieving complex mold movements. In traditional hydraulic circuit designs, when a single oil port needs to drive multiple sets of actuators, branch lines or independent valve control units are typically used to distribute the oil circuit. However, existing technologies have significant drawbacks in practical applications:

[0003] Firstly, when the number of hydraulic cylinder interfaces in a die-casting machine is insufficient, conventional solutions require the addition of a flow divider block or an external hydraulic circuit expansion device. Such structures not only increase system complexity and installation space requirements, but also exacerbate hydraulic pressure loss due to multi-stage flow division. Especially under high-pressure conditions, insufficient driving force of the end cylinder is likely to occur, making it difficult to meet the stringent requirements of precision die-casting processes for synchronous operation.

[0004] Secondly, for core-pulling actions with strict timing requirements, existing technologies mostly rely on solenoid valve groups in conjunction with PLC timing control to achieve sequential actions. This solution suffers from a cumulative response delay effect. When multiple sets of hydraulic cylinders share the same oil circuit, hydraulic shock can easily cause sequence disorder, resulting in asynchronous core-pulling actions in the mold. Especially under high-speed continuous die casting conditions, the mechanical adjustment of traditional sequence valves is difficult to dynamically adapt to changes in process parameters, seriously affecting the quality stability of the molded parts.

[0005] Third, in mixed load scenarios (i.e., when a single group of multiple hydraulic cylinders requires extraordinary core-pulling force), traditional pressure equalization methods easily lead to insufficient driving force for high-load hydraulic cylinders, while forcibly increasing the system pressure can cause overload risks in low-load hydraulic cylinders. Although the existing patent technology CN116060594B proposes a graded pressure boosting scheme, its complex pressure feedback mechanism significantly increases manufacturing costs, and it is prone to causing system pressure oscillations during dynamic adjustment.

[0006] The current market urgently needs an integrated hydraulic distribution device that can achieve intelligent pressure distribution and sequential control of multiple cylinders under limited interface conditions, while also having load self-adaptation capabilities. Summary of the Invention

[0007] To address the shortcomings of the existing technology, this utility model provides an oil collector structure that adds multiple sets of oil cylinder interfaces to the die-casting machine, enabling sequential operation of the oil cylinders and meeting different oil pressure distribution requirements.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An oil collector structure, characterized in that it includes a first cylinder head, an oil collector cylinder body, a second cylinder head, and a movable block. The first cylinder head is disposed at one end of the oil collector cylinder body, and the second cylinder head is disposed at the other end of the oil collector cylinder body. The oil collector cylinder body has a movable cavity, and the movable block is slidably disposed within the movable cavity. The first cylinder head has a forward oil inlet communicating with the movable cavity, and the second cylinder head has a reverse oil inlet communicating with the movable cavity. The oil collector cylinder body has a forward primary oil outlet, a forward secondary oil outlet, a reverse primary oil outlet, and a reverse... The movable block has a secondary oil outlet, and when the movable block moves a predetermined distance towards the second cylinder head, the forward primary oil outlet connects with the forward oil inlet; when the movable block abuts against the second cylinder head, the forward secondary oil outlet connects with the forward oil inlet; when the movable block moves a predetermined distance towards the first cylinder head, the reverse primary oil outlet connects with the reverse oil inlet; and when the movable block abuts against the first cylinder head, the reverse secondary oil outlet connects with the reverse oil inlet; the movable block has a first and a second push rod that are elastically telescopic at both ends.

[0010] Furthermore, the movable block is cylindrical and includes a left half and a right half connected as a single unit by bolts. A spring placement cavity is provided between the left half and the right half, and a compression spring is provided in the spring placement cavity. The first push rod is movably disposed on the left half and abuts against one end of the compression spring. The second push rod is movably disposed on the right half and abuts against the other end of the compression spring. The end face of the left half has a first push rod protrusion hole, and the end face of the right half has a second push rod protrusion hole.

[0011] Furthermore, both the left and right halves of the block have annular anti-slip rings.

[0012] The beneficial effects of this utility model include: it meets the needs of insufficient cylinder interfaces in die-casting machines, enables sequential core-pulling actions of different cylinders, and meets high oil pressure requirements when high-pressure core-pulling is required in multiple sets of cylinders. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the movable block structure of this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] One such Figure 1-2The oil collector structure shown includes a first cylinder head 1, an oil collector cylinder body 2, a second cylinder head 3, and a movable block 4. The first cylinder head 1 is located at one end of the oil collector cylinder body 2, and the second cylinder head 3 is located at the other end of the oil collector cylinder body 2. A movable cavity is provided within the oil collector cylinder body 2, and the movable block 4 is slidably disposed within the movable cavity. The first cylinder head 1 has a forward oil inlet 5 communicating with the movable cavity. The second cylinder head 3 has a reverse oil inlet 6 communicating with the movable cavity. The cylinder body 2 has a forward primary oil outlet a, a forward secondary oil outlet b, a reverse primary oil outlet c, and a reverse secondary oil outlet d. When the movable block 4 moves a predetermined distance towards the second cylinder head 3, the forward primary oil outlet a connects with the forward oil inlet 5; when the movable block 4 abuts against the second cylinder head 3, the forward secondary oil outlet b connects with the forward oil inlet 5; when the movable block 4 moves a predetermined distance towards the first cylinder head 1, the reverse primary oil outlet c connects with the reverse oil inlet 6; and when the movable block 4 abuts against the first cylinder head 1, the reverse secondary oil outlet d connects with the reverse oil inlet 6. The movable block 4 has a first push rod 7 and a second push rod 8 that are elastically telescopic at both ends.

[0017] like Figure 2 As shown, the movable block 4 is cylindrical and includes a left half 41 and a right half 42 connected as a single unit by bolts. A spring placement cavity is provided between the left half 41 and the right half 42. A compression spring 9 is installed in the spring placement cavity. A first push rod 7 is movably mounted on the left half 41, abutting against one end of the compression spring 9. The end face of the left half 41 has a first push rod extension hole. A second push rod 8 is movably mounted on the right half 42, abutting against the other end of the compression spring 9. The end face of the right half 42 has a second push rod extension hole. In the naturally extended state of the compression spring 9, the first push rod 7 extends out of the left end face of the left half 41, and the second push rod 8 extends out of the right end face of the right half 42. Both the left half 41 and the right half 42 have annularly arranged anti-slip rings 10.

[0018] Its working principle is as follows: the forward oil inlet 5 is connected to the oil pump and begins pumping oil into the left movable chamber of the movable block 4. The hydraulic oil pushes the movable block 4 to move towards the second cylinder head 3. When the left end of the movable block 4 exceeds the forward first-stage oil outlet a, the first oil cylinder connected to the forward first-stage oil outlet a begins to move. At this time, the second push rod 8 just abuts against the inner end face of the second cylinder head 3. After the first oil cylinder moves to its position, the oil pressure in the left movable chamber of the movable block 4 increases, and the movable block 4 continues to move towards the second cylinder head 3. The compression spring 9 is compressed, and the second push rod... 8 is gradually pressed into the spring placement cavity. When the right half 42 abuts against the second cylinder head 3, high-pressure oil enters the positive secondary oil outlet b. In this embodiment, there are two positive secondary oil outlets b, so two second oil cylinders for extrusion or core pulling can be connected. Alternatively, one of the positive secondary oil outlets b can be connected to a pressure-holding oil cylinder to maintain a stable oil pressure at the other positive secondary oil outlet b, preventing fluctuations. In addition, the anti-slip ring 10 can also prevent insufficient pressure in the left movable cavity, which could cause the movable block 4 to shift to the left. When the oil cylinder needs to move in the opposite direction, oil is supplied through the reverse oil inlet 6 to achieve sequential cylinder movement and pressurized core pulling action.

[0019] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An oil collector structure, characterized in that: The system includes a first cylinder head (1), an oil collector cylinder body (2), a second cylinder head (3), and a movable block (4). The first cylinder head (1) is located at one end of the oil collector cylinder body (2), and the second cylinder head (3) is located at the other end of the oil collector cylinder body (2). The oil collector cylinder body (2) has a movable cavity, and the movable block (4) is slidably disposed within the movable cavity. The first cylinder head (1) has a forward oil inlet (5) communicating with the movable cavity, and the second cylinder head (3) has a reverse oil inlet (6) communicating with the movable cavity. The oil collector cylinder body (2) has a forward primary oil outlet (a), a forward secondary oil outlet (b), a reverse primary oil outlet (c), and a reverse secondary oil outlet (d). When the movable block (4) moves a predetermined distance toward the second cylinder head (3), the forward primary oil outlet (a) is connected to the forward oil inlet (5); and when the movable block (4) abuts against the second cylinder head (3), the forward secondary oil outlet (b) is connected to the forward oil inlet (5); and when the movable block (4) moves a predetermined distance toward the first cylinder head (1), the reverse primary oil outlet (c) is connected to the reverse oil inlet (6); and when the movable block (4) abuts against the first cylinder head (1), the reverse secondary oil outlet (d) is connected to the reverse oil inlet (6); the movable block (4) is provided with a first push rod (7) and a second push rod (8) that can be elastically extended at both ends.

2. The oil collector structure according to claim 1, characterized in that: The movable block (4) is cylindrical and includes a left half (41) and a right half (42) connected by bolts. A spring placement cavity is provided between the left half (41) and the right half (42), and a compression spring (9) is provided in the spring placement cavity. The first push rod (7) is movably disposed on the left half (41) and abuts against one end of the compression spring (9). The second push rod (8) is movably disposed on the right half (42) and abuts against the other end of the compression spring (9). The end face of the left half (41) has a first push rod protrusion hole, and the end face of the right half (42) has a second push rod protrusion hole.

3. The oil collector structure according to claim 2, characterized in that: Both the left half (41) and the right half (42) have annular anti-slip rings (10).

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