Combined mold core structure for ladder protection pedal

Abstract

The utility model relates to a combined mold core structure for a ladder protection pedal, which comprises an upper combined mold core, a lower combined mold core and a side loose core, the upper combined mold core and the lower combined mold core are stacked up and down, a mold cavity structure of which the middle part protrudes upwards is formed between the upper combined mold core and the lower combined mold core, and the side loose core is arranged in the mold cavity structure. The side loose cores inserted into the mold cavity structure are symmetrically installed at the two ends of the upper combined mold core and the two ends of the lower combined mold core, the upper combined mold core comprises a front middle upper mold core, a rear middle upper mold core, a front side upper mold core and a rear side upper mold core, and the rear middle upper mold core is installed on the rear side of the front middle upper mold core. Two front side upper mold cores are symmetrically installed on the two sides of the front middle upper mold core, two rear side upper mold cores are symmetrically installed on the two sides of the rear middle upper mold core, and two longitudinal upper mold core pressing strips are symmetrically installed on the outer sides of the two front side upper mold cores and the outer sides of the two rear side upper mold cores. The mold has the characteristics of convenience in mold assembly, simplification of mold structure, reduction of mold cost, improvement of mold opening speed and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of guard ladder pedals, in particular to a combined die core structure for guard ladder pedals. Background Art

[0002] The front end of a guard ladder pedal usually requires a curved surface structure that bends backward, which facilitates smooth storage during the operation of the elevator and avoids interference between structures. Therefore, the guard ladder pedal as a whole is a plate structure in the shape of a mountain. The length of the guard ladder pedal itself is relatively large. When using a conventional die-casting mold for production, multiple core-pulling structures need to be set. In order to facilitate the formation of the horizontal plane and the curved surface structure, a new die core structure with simple structure and convenient mold opening needs to be designed. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a combined die core structure for guard ladder pedals, which has the characteristics of convenient mold assembly, simplified mold structure, reduced mold cost, and improved mold opening speed.

[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide a combined die core structure for guard ladder pedals, including an upper combined die core, a lower combined die core, and a side core-pulling structure. The upper combined die core and the lower combined die core are arranged in an up-and-down stacked manner. A cavity structure protruding upward in the middle is formed between the upper combined die core and the lower combined die core. Side core-pulling structures inserted into the cavity structure are symmetrically installed at both ends of the upper combined die core and the lower combined die core. The upper combined die core includes a front middle upper die core, a rear middle upper die core, a front side upper die core, and a rear side upper die core. The rear middle upper die core is installed behind the front middle upper die core. Two front side upper die cores are symmetrically installed on both sides of the front middle upper die core. Two rear side upper die cores are symmetrically installed on both sides of the rear middle upper die core. Two longitudinal upper die core pressing strips are symmetrically installed on the outer sides of the two front side upper die cores and the two rear side upper die cores.

[0005] In this technical solution, the cavity structure is formed by setting the upper combined die core and the lower combined die core. The combined die core can effectively reduce the processing difficulty of the die core, and at the same time, it is convenient for the assembly of the die core, improving the assembly efficiency. At the same time, due to the mountain-shaped cavity structure, one side is a curved surface and the other side is a plane, so the upper combined die core is divided into two groups, one group is the front die core and the other group is the rear die core, which is convenient for workers to carry out centralized processing and reduce the processing cost.

[0006] As a supplement to this technical solution, the lower combined mold core includes a middle lower core-pulling part, side lower core-pulling parts, and foot lower core-pulling parts. Two side lower core-pulling parts are symmetrically installed on both sides of the middle lower core-pulling part. Foot lower core-pulling parts are installed on the outer sides of the side lower core-pulling parts. A mountain-shaped protrusion is provided in the middle of the upper end surfaces of the middle lower core-pulling part, the side lower core-pulling parts, and the foot lower core-pulling parts.

[0007] In this technical solution, by providing the middle lower core-pulling part, the side lower core-pulling parts, and the foot lower core-pulling parts, it is convenient for workers to assemble and process.

[0008] As a supplement to this technical solution, a gate structure is installed in the middle of the front side of the upper combined mold core and the lower combined mold core. An injection runner is provided between the front side of the gate structure and the front side of the mold cavity structure.

[0009] By providing the gate structure and the injection runner, it is convenient for the molten metal to flow into the mold cavity structure.

[0010] As a supplement to this technical solution, a limiting edge is provided at the rear edge of the lower end surface of the upper combined mold core. By providing the limiting edge, it is convenient to form a limit with the upper mold frame, so that when the upper mold frame is lifted, the upper combined mold core can be driven to move synchronously.

[0011] As a supplement to this technical solution, a sealing step higher than the limiting edge is provided at the rear part of the lower end surface of the upper combined mold core. By providing the sealing step, it is used to improve the rear sealing degree of the mold cavity structure and prevent the molten metal from overflowing.

[0012] As a supplement to this technical solution, two support-foot inserts are symmetrically installed at the front part of the lower end surface of the upper combined mold core near the positions of the two side core-pulling parts. By providing the support-foot inserts, it is ensured that the local structure of the product can be formed. At the same time, it is also convenient for the support-foot inserts to be independently produced and replaced.

[0013] As a supplement to this technical solution, a number of slag pocket grooves are arranged side by side at the lower part of the core-pulling end surface of the side core-pulling part. By providing the slag pocket grooves, it is convenient for the mold cavity structure to exhaust air.

[0014] Beneficial effects: The present utility model relates to a combined mold core structure for a ladder step. By providing the upper combined mold core and the lower combined mold core, the mold cavity structure is formed. The combined mold core can effectively reduce the processing difficulty of the mold core, and at the same time, it is also convenient for the assembly of the mold core, improving the assembly efficiency. At the same time, due to the mountain-shaped mold cavity structure, one side is an arc surface and the other side is a plane, so the upper combined mold core is divided into two groups, one group is the front mold core and the other group is the rear mold core, which is convenient for workers to carry out centralized processing and reduce the processing cost; it has the characteristics of convenient mold assembly, simplified mold structure, reduced mold cost, and increased mold opening speed. Description of the Drawings

[0015] Figure 1 is the front view of the present utility model;

[0016] Figure 2 is the top view of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 sectional view in the direction of A - A in;

[0018] Figure 4 is the structural view of the upper combined die core and the side core - pulling of the present utility model.

[0019] Illustration: 1. Upper combined die core, 2. Lower combined die core, 3. Side core - pulling, 4. Gate structure, 5. Rear middle upper die core, 6. Front middle upper die core, 7. Rear side upper die core, 8. Front side upper die core, 9. Upper die core pressing strip, 10. Middle lower core - pulling, 11. Side lower core - pulling, 12. Foot lower core - pulling, 13. Skim bob groove, 14. Foot - type insert, 15. Injection runner, 16. Limit rib, 17. Sealing step. Specific embodiments

[0020] The following further elaborates the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0021] The embodiment of the present utility model relates to a combined die core structure for a guardrail pedal, as Figure 1 shown in FIG. - 4, including an upper combined die core 1, a lower combined die core 2 and a side core - pulling 3. The upper combined die core 1 and the lower combined die core 2 are arranged in an up - and - down stacked manner. A cavity structure protruding upward in the middle is formed between the upper combined die core 1 and the lower combined die core 2. Side core - pullings 3 inserted into the cavity structure are symmetrically installed at both ends of the upper combined die core 1 and the lower combined die core 2. The upper combined die core 1 includes a front middle upper die core 6, a rear middle upper die core 5, a front side upper die core 8 and a rear side upper die core 7. A rear middle upper die core 5 is installed at the rear of the front middle upper die core 6. Two front side upper die cores 8 are symmetrically installed on both sides of the front middle upper die core 6. Two rear side upper die cores 7 are symmetrically installed on both sides of the rear middle upper die core 5. Two longitudinal upper die core pressing strips 9 are symmetrically installed on the outer sides of the two front side upper die cores 8 and the two rear side upper die cores 7.

[0022] In this technical solution, the cavity structure is formed by setting the upper combined die core 1 and the lower combined die core 2. The combined die core can effectively reduce the processing difficulty of the die core, and at the same time, it is convenient for the assembly of the die core, improving the assembly efficiency. At the same time, due to the mountain-shaped cavity structure, one side is an arc surface and the other side is a plane, so the upper combined die core 1 is divided into two groups, one group is the front die core and the other group is the rear die core, which is convenient for workers to carry out centralized processing and reduce the processing cost.

[0023] As a supplement to this technical solution, the lower combined die core 2 includes a middle lower core-pulling 10, side lower core-pullings 11 and foot lower core-pullings 12. Two side lower core-pullings 11 are symmetrically installed on both sides of the middle lower core-pulling 10. Foot lower core-pullings 12 are installed on the outer sides of the side lower core-pullings 11. A mountain-shaped protrusion is arranged in the middle of the upper end surfaces of the middle lower core-pulling 10, the side lower core-pullings 11 and the foot lower core-pullings 12.

[0024] In this technical solution, by setting the middle lower core-pulling 10, the side lower core-pullings 11 and the foot lower core-pullings 12, it is convenient for workers to assemble and process.

[0025] As a supplement to this technical solution, a gate structure 4 is installed in the middle of the front side of the upper combined die core 1 and the lower combined die core 2. An injection runner 15 is arranged between the gate structure 4 and the front side of the cavity structure.

[0026] By setting the gate structure 4 and the injection runner 15, it is convenient for the molten metal to flow into the cavity structure.

[0027] As a supplement to this technical solution, a limiting edge 16 is arranged at the rear edge of the lower end surface of the upper combined die core 1. By setting the limiting edge 16, it is convenient to form a limit with the upper die frame, so that when the upper die frame is lifted, the upper combined die core 1 can be driven to move synchronously.

[0028] As a supplement to this technical solution, a sealing step 17 higher than the limiting edge 16 is arranged at the rear part of the lower end surface of the upper combined die core 1. By setting the sealing step 17, it is used to improve the rear sealing degree of the cavity structure and prevent the molten metal from overflowing.

[0029] As a supplement to this technical solution, two foot type inserts 14 are symmetrically installed at the front part of the lower end surface of the upper combined die core 1 near the positions of the two side core-pullings 3. By setting the foot type inserts 14, it is used to ensure the formation of the local structure of the product, and at the same time, it is convenient for the foot type inserts 14 to be independently produced and replaced.

[0030] As a supplement to this technical solution, a number of slag pocket grooves 13 are arranged side by side at the lower part of the core-pulling end surface of the side core-pulling 3. By setting the slag pocket grooves 13, it is convenient for the cavity structure to exhaust gas.

[0031] The above has introduced in detail a combined die core structure for a ladder guard pedal. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A combined core mold structure for a ladder step, characterized in that: The mold core comprises an upper mold core (1), a lower mold core (2) and a side core pull (3), wherein the upper mold core (1) and the lower mold core (2) are stacked up and down, and a mold cavity structure with a middle portion protruding upward is formed between the upper mold core (1) and the lower mold core (2), and side core pulls (3) inserted into the mold cavity structure are symmetrically installed at both ends of the upper mold core (1) and the lower mold core (2), and the upper mold core (1) comprises a front middle upper mold core (6), a rear middle upper mold core (7), and a rear middle upper mold core (8). A mold core (5), a front side upper mold core (8) and a rear side upper mold core (7); the rear side of the front middle upper mold core (6) is installed with the rear middle upper mold core (5); two front side upper mold cores (8) are symmetrically installed on both sides of the front middle upper mold core (6); two rear side upper mold cores (7) are symmetrically installed on both sides of the rear middle upper mold core (5); and two longitudinal upper mold core strips (9) are symmetrically installed on the outer sides of the two front side upper mold cores (8) and the two rear side upper mold cores (7).

2. The combined core mold structure for ladder step according to claim 1, characterized in that: The lower combined mold core (2) comprises a middle lower core pull (10), a side lower core pull (11) and a foot lower core pull (12); two side lower core pulls (11) are symmetrically installed on both sides of the middle lower core pull (10); the outer sides of the side lower core pulls (11) are each installed with a foot lower core pull (12); and a mountain-shaped protrusion is provided in the middle of the upper end surfaces of the middle lower core pull (10), the side lower core pull (11) and the foot lower core pull (12).

3. The combined core mold structure for ladder step according to claim 1, characterized in that: A gate structure (4) is installed in the middle of the front side of the upper combined mold core (1) and the lower combined mold core (2), and an injection flow channel (15) is arranged between the gate structure (4) and the front side of the cavity structure.

4. The combined core mold structure for ladder step according to claim 1, characterized in that: A limited extension (16) is provided at the rear edge of the lower end surface of the upper combined mold core (1).

5. The combined core structure for ladder step according to claim 4, characterized in that: A sealing step (17) higher than the limiting extension (16) is arranged at the rear of the lower end surface of the upper combined mold core (1).

6. The combined core mold structure for ladder step according to claim 1, characterized in that: Two supporting leg inserts (14) are symmetrically installed on the front portion of the lower end face of the upper combined mold core (1) near the positions of the two side core pullers (3).

7. The combined core mold structure for ladder step according to claim 1, characterized in that: A plurality of slag ladle grooves (13) are arranged side by side at the lower part of the core pulling end surface of the side core pulling (3).

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