Mechanism for quickly closing flow channel of injection mold

Abstract

The utility model relates to the field of mold runners, in particular to a mechanism for quickly closing an injection mold runner, which comprises a lower mold body, mold cavities are symmetrically arranged at the top of the lower mold body, runners are symmetrically arranged between the two mold cavities, a mounting hole is arranged in the lower mold body, and a rotating cylinder for blocking the runners is rotatably connected in the mounting hole. The top ends of the rotating cylinders intersect with the runner, the two rotating cylinders are symmetrically arranged in one runner, through holes matched with the ejector pins are formed in the rotating cylinders, and notches used for being communicated with the runner are formed in the side walls of the top ends of the rotating cylinders. According to the invention, an interchange insert for blocking the runner is avoided, the time for replacing the interchange insert to block the runner is saved, the main runner of an injection molding part is blocked and opened within 5 minutes, and the single-side production of a product is realized on the premise of ensuring the production efficiency.

Description

Technical Field

[0001] The utility model relates to the field of mold runners, in particular to a rapid closing runner mechanism for an injection mold. Background Art

[0002] During the production and transportation of automotive injection parts, due to various reasons, the qualification rates of left and right parts are inconsistent. Against the backdrop of reducing inventory pressure and alleviating the shortage of storage containers, it is necessary to produce left parts or right parts separately in batches to meet the supporting supply. The existing solution is to use inserts for plugging, but the time for replacing the inserts is relatively long, which greatly reduces the production efficiency.

[0003] Therefore, it is necessary to provide a rapid closing runner mechanism for an injection mold to solve the above technical problems. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a rapid closing runner mechanism for an injection mold.

[0005] A rapid closing runner mechanism for an injection mold provided by the utility model includes a lower mold body. The top of the lower mold body is symmetrically provided with mold cavities. A runner is symmetrically arranged between the two mold cavities. An installation hole is provided inside the lower mold body. A rotating cylinder for plugging the runner is rotatably connected inside the installation hole. The top end of the rotating cylinder intersects with the runner. Two rotating cylinders are symmetrically arranged inside one runner. A through hole for cooperating with a thimble is provided inside the rotating cylinder. A notch for communicating with the runner is provided on the side wall of the top end of the rotating cylinder.

[0006] Preferably, an internal hexagonal groove is provided on the inner wall of the top end of the rotating cylinder.

[0007] Preferably, a square groove is provided at the bottom of the lower mold body opposite to the rotating cylinder. A limit seat is fixed in the square groove by screws. An annular anti - detachment portion is provided on the side wall of the bottom end of the rotating cylinder.

[0008] Preferably, a ball screw is threadedly connected inside the limit seat, and four ball screws are arranged in an annular array along the rotating cylinder. A groove for cooperating with the ball screw is provided at the bottom of the annular anti - detachment portion.

[0009] Preferably, the cross - section of the runner is in the same shape as that of the notch.

[0010] Compared with the related technology, the utility model provides the following beneficial effects:

[0011] By providing the rotating cylinder, the number of valve pins in the hot runner can be reduced, the interchangeable inserts for plugging the runner can be avoided, the time for replacing the interchangeable inserts to plug the runner can be saved, the main runner of the injection part can be plugged and opened within 5 minutes, and the unilateral production of the product can be realized on the premise of ensuring the production efficiency. Brief Description of the Drawings

[0012] Figure 1 Schematic diagram of the lower die body of the present utility model installed on the mold;

[0013] Figure 2 Schematic diagram of the relative positions of the mounting holes of the present utility model;

[0014] Figure 3 Schematic diagram of the relative positions of the limit seats of the present utility model;

[0015] Figure 4 Schematic diagram of the relative positions of the ejector pins of the rotating cylinder of the present utility model;

[0016] Figure 5 Schematic diagram of the structure of the rotating cylinder of the present utility model;

[0017] Figure 6 Schematic diagram of closing the product flow channel on one side of the present utility model;

[0018] Figure 7 Schematic diagram of fully opening the flow channel of the present utility model.

[0019] Reference numerals in the figures: 1, lower die body; 2, mold cavity; 3, flow channel; 4, mounting hole; 5, rotating cylinder; 6, through hole; 7, notch; 8, hexagon socket; 9, square groove; 10, limit seat; 11, annular anti - detachment part; 12, glass bead screw; 13, groove. Detailed Description of the Preferred Embodiments

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Please refer to Figures 1 to 7 , a rapid - closing injection mold flow channel mechanism, including a lower die body 1. At the top of the lower die body 1, two mold cavities 2 are symmetrically designed, and these two mold cavities 2 are connected through a carefully arranged flow channel 3. Inside the lower die body 1, mounting holes 4 are ingeniously provided, and rotating cylinders 5 are rotatably connected in these mounting holes 4. The tops of these rotating cylinders 5 exactly intersect with the flow channel 3, and two rotating cylinders 5 are symmetrically installed in each flow channel 3. Inside the rotating cylinder 5, through holes 6 are designed, and these through holes 6 can be perfectly matched with the ejector pins. In addition, notches 7 are specially opened on the side wall at the top of the rotating cylinder 5 to communicate with the flow channel 3 when needed.

[0022] It should be emphasized that: there is an injection port in the middle of the upper die body, and the injection port is arranged directly opposite the center position of the flow channel 3, which belongs to the prior art and will not be described and illustrated in detail here.

[0023] To operate the rotating cylinder 5 more conveniently, the inner wall at its top end is carefully crafted into an internal hexagonal groove 8. Just insert an internal hexagonal wrench into this groove, and the rotating cylinder 5 can be easily rotated, thus achieving the blocking of the flow channel 3. This design enables us to flexibly close the product flow channel on one side according to production requirements, and then realize the single-sided production of the product.

[0024] At the bottom of the lower die body 1, directly opposite the position of the rotating cylinder 5, a square groove 9 is specially opened. In these square grooves 9, a limit seat 10 is firmly fixed by screws, and an annular anti - detachment portion 11 is provided on the bottom side wall of the rotating cylinder 5 to ensure that the rotating cylinder 5 does not fall off during rotation.

[0025] Inside the limit seat 10, bead screws 12 are tightly connected by threads. These bead screws 12 are arranged in an annular array along the rotating cylinder 5, with a total of four. At the same time, a groove 13 that cooperates with the bead screws 12 is also cleverly designed at the bottom of the annular anti - detachment portion 11. Through the tight cooperation between the bead screws 12 and the groove 13, not only can the rotating cylinder 5 be accurately positioned, but also the precise cooperation between the flow channel 3 and the notch 7 can be ensured. Thus, while ensuring that the flow channel 3 is completely blocked by the rotating cylinder 5, the smooth flow of the injection liquid and the precise filling of the mold cavity are also ensured.

[0026] It is worth mentioning that the cross - sectional shape of the flow channel 3 is carefully designed to be exactly the same as the shape of the notch 7. This design enables the injection liquid to flow more smoothly during the flowing process, thus ensuring the filling effect of the mold cavity and the final quality of the product.

[0027] The above - mentioned are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present utility model.

Claims

1. A rapid closing injection mold runner mechanism, characterized in that, It includes a lower die body (1), a mold cavity (2) is symmetrically arranged at the top of the lower die body (1), a runner (3) is symmetrically arranged between the two mold cavities (2), an installation hole (4) is arranged inside the lower die body (1), a rotating cylinder (5) for blocking the runner (3) is rotatably connected in the installation hole (4), the top end of the rotating cylinder (5) intersects with the runner (3), two rotating cylinders (5) are symmetrically arranged in one runner (3), a through hole (6) matched with a thimble is arranged inside the rotating cylinder (5), and a notch (7) for communicating the runner (3) is arranged on the side wall of the top end of the rotating cylinder (5).

2. The runner mechanism of a rapid closing injection mold according to claim 1, characterized in that, An internal hexagonal groove (8) is arranged on the inner wall of the top end of the rotating cylinder (5).

3. A rapid closing injection mold runner mechanism according to claim 1, characterized in that, A square groove (9) is arranged at the bottom of the lower die body (1) opposite to the rotating cylinder (5), a limit seat (10) is fixed in the square groove (9) by screws, and an annular anti - detachment part (11) is arranged on the side wall of the bottom end of the rotating cylinder (5).

4. A rapid-sealing injection mold runner mechanism according to claim 3, characterized in that, A ball screw (12) is connected in the limit seat (10) by thread, and four ball screws (12) are arranged in an annular array along the rotating cylinder (5), and a groove (13) matched with the ball screw (12) is arranged at the bottom of the annular anti - detachment part (11).

5. A rapid closing injection mold runner mechanism according to claim 1, characterized in that, The cross - section of the runner (3) is formed to be consistent with the shape of the notch (7).

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