A cylinder spade base structure for preventing the retreat of a tunnel core pulling needle

Abstract

The utility model discloses a prevent tunnel core-pulling needle retreats's oil cylinder spade base structure, including core-pulling oil cylinder, tunnel core-pulling needle main part and spade base structure, the core-pulling oil cylinder is connected with tunnel core-pulling needle main part, and the core-pulling work is driven tunnel core-pulling needle main part through core-pulling oil cylinder, spade base structure sets up in the vertical direction of tunnel core-pulling needle main part, and the spade base structure is through the clamping end of spade base structure and is clamped between tunnel core-pulling needle main part and is clamped and is positioned. The utility model discloses a spade base oil cylinder drive clamping block rigid insertion core-pulling needle card slot, forms the physical obstruction, fundamentally eliminates the risk of core-pulling needle retreats after being pressed in production, avoids the deviation of casting hole diameter or deformation caused by retreat, and significantly improves product pass rate.

Description

Technical Field

[0001] This utility model relates to a hydraulic cylinder shovel base structure, specifically a hydraulic cylinder shovel base structure for preventing the tunnel core-pulling needle from retracting. Background Technology

[0002] In high-pressure casting (especially aluminum alloy die casting), molten aluminum is injected into the mold at a pressure of >500 bar. Traditional core-pulling pins rely solely on the thrust of a hydraulic cylinder to maintain their position, but the shrinkage stress during aluminum solidification and the dynamic pressure impact can easily push the core-pulling pin backward, resulting in an oversized or deformed hole in the casting.

[0003] Traditional anti-retraction solutions have limited effectiveness. They rely on mechanical bolts for locking, depend on manual operation, have a slow response, and cannot be dynamically adjusted within the die-casting cycle, thus reducing production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hydraulic cylinder shovel base structure for preventing the tunnel core-pulling needle from retracting, so as to solve the problems existing in the background art.

[0005] The hydraulic cylinder shovel base structure for preventing the tunnel core-pulling needle from retracting is achieved through the following technical solution, including a core-pulling hydraulic cylinder, a tunnel core-pulling needle body, and a shovel base structure.

[0006] The core-pulling cylinder is connected to the main body of the tunnel core-pulling needle, and the core-pulling cylinder drives the main body of the tunnel core-pulling needle to perform core-pulling work.

[0007] The shovel base structure is positioned vertically to the main body of the tunnel core needle, and the shovel base structure and the main body of the tunnel core needle are clamped and limited by the clamping end of the shovel base structure.

[0008] As a preferred technical solution, the shovel base structure includes a shovel base hydraulic cylinder and a clamping block;

[0009] The clamping block is fixed to the telescopic rod of the shovel base cylinder, and the main body of the tunnel core needle is provided with a clamping groove; when the main body of the tunnel core needle is in the clamping state, the clamping end is inserted into the clamping groove under the action of the shovel base cylinder.

[0010] As a preferred technical solution, the main body of the tunnel core-pulling needle and the core-pulling cylinder are connected by a connecting block.

[0011] As a preferred technical solution, it also includes a limiting block, which is fixed to the equipment; the front end of the tunnel core-pulling needle body is provided with a guide sleeve, and the guide sleeve corresponds to the position of the limiting block. When the tunnel core-pulling needle body moves backward, the limiting block limits the guide sleeve to prevent the guide sleeve from moving backward synchronously with the tunnel core-pulling needle body.

[0012] As a preferred technical solution, a guide limiting groove is provided on the other side of the tunnel core needle body, and the equipment is also provided with a guide limiting block corresponding to the guide limiting groove for guiding the extension and retraction of the tunnel core needle body.

[0013] The beneficial effects of this utility model are:

[0014] This invention uses a shovel-based hydraulic cylinder to drive a clamping block to rigidly insert into the core-pulling pin slot, forming a physical barrier. This fundamentally eliminates the risk of the core-pulling pin retracting under pressure during production, avoids casting hole diameter deviation or deformation caused by retraction, and significantly improves product qualification rate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the locking state structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the unlocked state structure of this utility model.

[0018] Explanation of reference numerals in the attached figures

[0019] 1. Core-pulling cylinder; 2. Main body of tunnel core-pulling needle; 3. Shovel base structure; 4. Shovel base cylinder; 5. Clamping block; 6. Clamping groove; 7. Connecting block; 8. Guide ring; 9. Guide limiting groove; 10. Guide limiting block. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] like Figures 1-2 As shown, the present invention provides a hydraulic cylinder shovel base structure for preventing the tunnel core-pulling needle from retracting, comprising a core-pulling hydraulic cylinder 1, a tunnel core-pulling needle body 2, and a shovel base structure 3.

[0022] The core-pulling cylinder 1 is connected to the tunnel core-pulling needle body 2, and the core-pulling cylinder 1 drives the tunnel core-pulling needle body 2 to perform core-pulling work.

[0023] The shovel base structure 3 is positioned vertically to the tunnel core needle body 2, and the shovel base structure 3 and the tunnel core needle body 2 are clamped and limited by the clamping end of the shovel base structure 3.

[0024] In order to prevent backward movement, in this embodiment, the shovel base structure 3 includes a shovel base cylinder 4 and a clamping block 5;

[0025] The clamping block 5 is fixed on the telescopic rod of the shovel base cylinder 4, and the tunnel core needle body 2 is provided with a clamping groove 6; when the tunnel core needle body 2 is in the clamping state, the clamping end is inserted into the clamping groove 6 under the action of the shovel base cylinder 4.

[0026] The tunnel core-pulling needle body 2 and the core-pulling cylinder 1 are connected by a connecting block 7.

[0027] In addition, it also includes a limiting block 8, which is fixed to the equipment; the front end of the tunnel core needle body 2 is provided with a guide sleeve 11, and the guide sleeve 11 corresponds to the position of the limiting block 8. When the tunnel core needle body 2 moves backward, the limiting block 8 limits the guide sleeve 11 to prevent the guide sleeve 11 from moving backward synchronously with the tunnel core needle body 2.

[0028] In addition, a guide limiting groove 9 is provided on the other side of the tunnel core needle body 2, and a guide limiting block 10 corresponding to the guide limiting groove 9 is also provided on the equipment for guiding the extension and retraction of the tunnel core needle body 2.

[0029] During the production of tunnel core-pulling pins, there is a risk of the pins retracting due to the pressure of the aluminum material. Retraction will result in substandard hole dimensions in the casting.

[0030] This invention adds a hydraulically driven shovel base in the vertical direction of the core-pulling needle to clamp the core-pulling needle and prevent it from retracting.

[0031] This invention uses a shovel-based hydraulic cylinder to drive a clamping block to rigidly insert into the core-pulling pin slot, forming a physical barrier. This fundamentally eliminates the risk of the core-pulling pin retracting under pressure during production, avoids casting hole diameter deviation or deformation caused by retraction, and significantly improves product qualification rate.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A hydraulic cylinder shovel base structure for preventing the retraction of a tunnel core-pulling needle, characterized in that, It includes a core-pulling cylinder (1), a tunnel core-pulling needle body (2), and a shovel base structure (3); The core-pulling cylinder (1) is connected to the tunnel core-pulling needle body (2), and the core-pulling cylinder (1) drives the tunnel core-pulling needle body (2) to perform core-pulling work. The shovel base structure (3) is set in the vertical direction of the tunnel core needle body (2), and the shovel base structure (3) and the tunnel core needle body (2) are clamped and limited by the clamping end of the shovel base structure (3).

2. The hydraulic cylinder shovel base structure (3) for preventing the tunnel core-pulling needle from retracting according to claim 1, characterized in that: The shovel base structure (3) includes a shovel base cylinder (4) and a clamping block (5); The clamping block (5) is fixed on the telescopic rod of the shovel base cylinder (4), and the tunnel core needle body (2) is provided with a clamping groove (6); when the tunnel core needle body (2) is in the clamping state, the clamping end is inserted into the clamping groove (6) under the action of the shovel base cylinder (4).

3. The hydraulic cylinder shovel base structure (3) for preventing the tunnel core-pulling needle from retracting according to claim 1, characterized in that: The tunnel core-pulling needle body (2) and the core-pulling cylinder (1) are connected by a connecting block (7).

4. The hydraulic cylinder shovel base structure (3) for preventing the tunnel core-pulling needle from retracting according to claim 1, characterized in that: It also includes a limiting block (8), and the limiting block (8) is fixed on the equipment; the front end of the tunnel core needle body (2) is provided with a guide sleeve (11), and the guide sleeve (11) is positioned corresponding to the limiting block (8). When the tunnel core needle body (2) moves backward, the limiting block (8) limits the guide sleeve (11) to prevent the guide sleeve (11) from moving backward synchronously with the tunnel core needle body (2).

5. The hydraulic cylinder shovel base structure (3) for preventing the tunnel core-pulling needle from retracting according to claim 1, characterized in that: The tunnel core needle body (2) is provided with a guide limiting groove (9) on the other side, and the equipment is also provided with a guide limiting block (10) corresponding to the guide limiting groove (9) for the extension and retraction guidance of the tunnel core needle body (2).

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