A pressurized core mold

Abstract

The utility model discloses a kind of pressurized core mould, it is related to pressurized core mould technical field, including top cover, the top cover top is fixedly connected with injection port, the bottom of top cover is provided with forming assembly, the bottom of forming assembly is provided with bottom mould.The pressurized core mould is to solve the problem that only single production workpiece can be produced in prior art mould, production efficiency is low and it is difficult to meet the batch manufacturing demand, the cavity structure of top mould and bottom mould cooperation is set in the present application, and cross feed groove is designed in top mould, after injection liquid is injected into injection port, it can be evenly distributed to multiple cavities from four directions along cross feed groove, the structure realizes the synchronous forming of multiple workpieces by single injection process, and the accurate positioning of fixed sleeve and limiting sleeve and spring buffer mechanism are matched, which not only guarantees the uniformity of multi-cavity injection molding and the stability of finished product quality, but also significantly improves production efficiency, effectively reduces single manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically a pressure boosting core mold. Background Technology

[0002] Injection molds are core equipment in plastic molding. They inject molten plastic into the mold cavity under high temperature and pressure, and after cooling and solidification, the desired shape of the product is obtained. The structure of an injection mold typically consists of a moving mold, a fixed mold, a core, a cavity, a gating system, and a demolding mechanism. The design accuracy directly affects the dimensional stability, surface quality, and production efficiency of the product. The key advantage of injection molds lies in efficient mass production. The single molding cycle can be controlled within a few seconds to a few minutes, and the repeatability of the product can reach ±0.01mm. They are suitable for automotive parts. Modern mold technology also incorporates hot runner systems, gas-assisted molding, and multi-color co-injection processes, which can realize the production of products with complex structures and multiple material combinations. At the same time, by optimizing the cooling water channel layout and the selection of mold steel, the mold life and product yield are significantly improved. Currently, pressure core molds are often used in the market for injection molding of pressure cores.

[0003] In existing technologies, traditional pressure-boosting core molds require sequential completion of mold closing, injection, pressure holding, cooling, and demolding of a single pressure-boosting core. Each step requires independent operation, resulting in a significant extension of the overall production cycle. In single-piece injection molding mode, the injection molding machine needs to be frequently started and stopped to change the mold or product, leading to increased equipment idle time and serious energy waste. Therefore, we need a pressure-boosting core mold. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure boosting core mold to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-boosting core mold, including a top cover, an injection port fixedly connected to the top of the top cover, a molding component provided at the bottom of the top cover, a bottom mold provided at the bottom of the molding component, a mounting base provided at the bottom of the bottom mold, a moving component provided between the bottom mold and the molding component, the molding component including a top mold, and the top mold fixed to the bottom of the top cover, a cross-shaped material groove opened inside the top mold, a mold cavity opened between the bottom mold and the top mold, a workpiece being placed inside the mold cavity, a fixing sleeve fixedly connected to the bottom of the top mold, a spring fixedly connected inside the fixing sleeve, a limit ring fixedly connected to the bottom of the spring, and a limit sleeve fixedly connected to the top of the bottom mold.

[0006] Preferably, the top mold is connected to the mold cavity through the injection port, and one end of the injection port extends into the top mold and connects with the cross groove, and the cross groove is connected to the four mold cavities respectively.

[0007] Preferably, the fixed sleeve forms an elastic structure with a spring and a limiting ring, and the spring is disposed between the fixed sleeve and the limiting ring.

[0008] Preferably, the bottom mold is engaged with the fixed sleeve through a limiting sleeve, and the bottom of the fixed sleeve is in contact with the limiting sleeve, and the limiting sleeve is fitted with the limiting ring.

[0009] Preferably, the moving component includes a push rod, which is fixed to the bottom of the top mold. The top of the bottom mold has a rod groove, and the bottom of the bottom mold is fixedly connected to a sliding plate. The bottom of the sliding plate is slidably connected to a slide rail.

[0010] Preferably, the bottom mold forms a movable structure with the rod groove and the push rod, and the outer diameter of the push rod matches the inner diameter of the rod groove, and both the push rod and the rod groove are inclined.

[0011] Preferably, the bottom mold forms a sliding structure through a sliding plate and a sliding rail, with the bottom of the sliding plate sliding against the outer wall of the sliding rail, and the bottom of the sliding rail being fixed to the top of the mounting base.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In the scheme of this application:

[0014] 1. To address the problems of existing molds being able to produce only a single workpiece, resulting in low production efficiency and difficulty in meeting the needs of mass production, this application proposes a mold cavity structure with a top mold and a bottom mold that cooperate. A cross groove is designed inside the top mold, allowing the injection liquid to be injected through the injection port and simultaneously and evenly distributed to multiple mold cavities from four directions along the cross groove. This structure enables the simultaneous molding of multiple workpieces through a single injection process. Combined with the precise positioning of the fixed sleeve and the limiting sleeve, as well as the spring buffer mechanism, it not only ensures the uniformity of multi-cavity injection and the stability of finished product quality, but also significantly improves production efficiency and effectively reduces the manufacturing cost per piece.

[0015] 2. To address the problems of difficult mold demolding, easy damage to finished products, and difficulty in achieving automated separation in existing technologies, this application proposes a sliding fit structure between the push rod and the rod groove, and a lateral separation mechanism consisting of the bottom mold, the slide plate, and the slide rail. This achieves a linked demolding effect where the top mold moves upward, simultaneously driving the push rod to eject the finished product, while the bottom mold automatically slides to both sides along the slide rail. This structure, through the combined motion of vertical ejection and horizontal parting, effectively avoids the pulling or scratching of finished products caused by traditional demolding methods, significantly improving demolding efficiency and finished product qualification rate, while also providing convenient conditions for integration into automated production lines. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the top mold and push rod structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the bottom mold and rod groove structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the fixed sleeve and limiting ring structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the top mold and cross groove structure of this utility model.

[0021] In the diagram: 1. Top cover; 2. Injection port; 3. Molding component; 301. Top mold; 302. Cross groove; 303. Mold cavity; 304. Workpiece; 305. Fixing sleeve; 306. Spring; 307. Limiting ring; 308. Limiting sleeve; 4. Moving component; 401. Push rod; 402. Rod groove; 403. Slide plate; 404. Slide rail; 5. Bottom mold; 6. Mounting base. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model embodiment provides a pressure boosting core mold, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the assembly includes a top cover 1, with a filling port 2 fixedly connected to the top of the top cover 1. A molding component 3 is provided at the bottom of the top cover 1, and a bottom mold 5 is provided at the bottom of the molding component 3. A mounting base 6 is provided at the bottom of the bottom mold 5. A moving component 4 is provided between the bottom mold 5 and the molding component 3. The molding component 3 includes a top mold 301, which is fixed to the bottom of the top cover 1. A cross groove 302 is provided inside the top mold 301. A mold cavity 303 is provided between the bottom mold 5 and the top mold 301, and a workpiece 304 is provided inside the mold cavity 303. A fixing sleeve 305 is fixedly connected to the bottom of the top mold 301, and a spring 306 is fixedly connected inside the fixing sleeve 305. A limit ring is fixedly connected to the bottom of the spring 306. 307. The top of the bottom mold 5 is fixedly connected to a limiting sleeve 308. During the mold closing process, the top mold 301 can move downwards to fit against the bottom mold 5. The top mold 301 can be positioned by relying on the bottom fixed sleeve 305 to be stuck in the limiting sleeve 308. The limiting sleeve 308 can push the limiting ring 307 to squeeze, and the limiting ring 307 can compress the spring 306, thereby completing the mold closing buffer requirement. The injection liquid can be injected into the injection port 2, and the material can enter the top mold 301 and the cross groove 302. The material flows into the mold cavity 303 between the bottom mold 5 and the top mold 301 from four directions.

[0024] Further, such as Figure 2 and Figure 5 As shown, the top mold 301 is connected to the mold cavity 303 through the injection port 2, and one end of the injection port 2 extends into the top mold 301 and is connected to the cross groove 302. The cross groove 302 is connected to the four mold cavities 303 respectively. Through the cross groove 302, the injection port 2 can transport the material into the cross groove 302, and the cross groove 302 can transport the material into the four mold cavities 303 respectively, so that multiple workpieces 304 can be formed at one time.

[0025] Further, such as Figure 4 As shown, the fixed sleeve 305 forms an elastic structure with the limiting ring 307 via the spring 306, and the spring 306 is located between the fixed sleeve 305 and the limiting ring 307, which strengthens the connection between the fixed sleeve 305 and the spring 306, allowing the fixed sleeve 305 to support the limiting ring 307 via the spring 306.

[0026] Further, such as Figure 3 and Figure 4As shown, the bottom mold 5 forms a locking structure with the fixed sleeve 305 through the limiting sleeve 308, and the bottom of the fixed sleeve 305 contacts the limiting sleeve 308. The limiting sleeve 308 is fitted with the limiting ring 307, which strengthens the connection between the bottom mold 5 and the limiting sleeve 308. This allows the bottom mold 5 to squeeze the limiting sleeve 308 by extending into the fixed sleeve 305 through the limiting sleeve 308.

[0027] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the moving component 4 includes a push rod 401, which is fixed to the bottom of the top mold 301. The top of the bottom mold 5 has a rod groove 402, and the bottom of the bottom mold 5 is fixedly connected to a sliding plate 403. The bottom of the sliding plate 403 is slidably connected to a slide rail 404. During demolding, the top mold 301 moves upward, which can drive the push rod 401 to move upward. The push rod 401 can slide in the rod groove 402 inside the bottom mold 5, and the bottom mold 5 can move to both sides. The bottom mold 5 can slide along the outer wall of the slide rail 404 by relying on the bottom sliding plate 403, thereby achieving the purpose of separation and exposing the mold inside the mold cavity 303 for easy demolding.

[0028] Further, such as Figure 2 and Figure 3 As shown, the bottom mold 5 forms a movable structure with the push rod 401 through the rod groove 402, and the outer diameter of the push rod 401 matches the inner diameter of the rod groove 402. Both the push rod 401 and the rod groove 402 are inclined, which strengthens the connection between the bottom mold 5 and the push rod 401, allowing the push rod 401 to move within the rod groove 402 and drive the bottom mold 5 to adjust its position.

[0029] Further, such as Figure 2 and Figure 3 As shown, the bottom mold 5 forms a sliding structure through the slide plate 403 and the slide rail 404, and the bottom of the slide plate 403 slides along the outer wall of the slide rail 404, while the bottom of the slide rail 404 is fixed to the top of the mounting base 6, which strengthens the connection between the slide plate 403 and the slide rail 404, allowing the bottom mold 5 to slide along the outer wall of the slide rail 404 by relying on the bottom slide plate 403.

[0030] Working Principle: During use, in the mold closing process, the top mold 301 can move downwards to fit against the bottom mold 5. The top mold 301 can be positioned within the limiting sleeve 308 by the bottom fixing sleeve 305. The limiting sleeve 308 can push the limiting ring 307 to compress the spring 306, thus fulfilling the mold closing buffer requirement. Molding liquid can be injected into the injection port 2, allowing the material to enter the top mold 301 and into the mold cavity. The material flows into the mold cavity 303 between the bottom mold 5 and the top mold 301 from four directions within the letter material groove 302. Simultaneously, during demolding, the top mold 301 moves upward, which can drive the push rod 401 to move upward as well. The push rod 401 can slide within the rod groove 402 inside the bottom mold 5, and the bottom mold 5 can move to both sides. This allows the bottom mold 5 to slide along the outer wall of the slide rail 404 using the bottom slide plate 403, thereby achieving separation and exposing the mold inside the mold cavity 303 for easy demolding.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressurized core mold comprising a top cover (1), characterized in that: The top of the top cover (1) is fixedly connected to an injection port (2), and a molding component (3) is provided at the bottom of the top cover (1). A bottom mold (5) is provided at the bottom of the molding component (3), and a mounting base (6) is provided at the bottom of the bottom mold (5). A moving component (4) is provided between the bottom mold (5) and the molding component (3). The molding component (3) includes a top mold (301), and the top mold (301) is fixed at the bottom of the top cover (1). The interior of the top mold (301) A cross groove (302) is provided. A mold cavity (303) is provided between the bottom mold (5) and the top mold (301). A workpiece (304) is provided inside the mold cavity (303). A fixing sleeve (305) is fixedly connected to the bottom of the top mold (301). A spring (306) is fixedly connected inside the fixing sleeve (305). A limit ring (307) is fixedly connected to the bottom of the spring (306). A limit sleeve (308) is fixedly connected to the top of the bottom mold (5).

2. A plenum core mold according to claim 1, wherein: The top mold (301) is connected to the mold cavity (303) through the injection port (2), and one end of the injection port (2) extends into the top mold (301) and is connected to the cross groove (302), and the cross groove (302) is connected to the four mold cavities (303) respectively.

3. The pressure-boosting core mold according to claim 1, characterized in that: The fixed sleeve (305) forms an elastic structure with the limiting ring (307) via the spring (306), and the spring (306) is disposed between the fixed sleeve (305) and the limiting ring (307).

4. The pressure-boosting core mold according to claim 1, characterized in that: The bottom mold (5) forms a locking structure with the fixed sleeve (305) through the limiting sleeve (308), and the bottom of the fixed sleeve (305) is in contact with the limiting sleeve (308), and the limiting sleeve (308) is fitted with the limiting ring (307).

5. A pressure-boosting core mold according to claim 1, characterized in that: The moving component (4) includes a push rod (401), and the push rod (401) is fixed to the bottom of the top mold (301). The top of the bottom mold (5) is provided with a rod groove (402), and the bottom of the bottom mold (5) is fixedly connected with a sliding plate (403). The bottom of the sliding plate (403) is slidably connected with a slide rail (404).

6. The pressure-boosting core mold according to claim 5, characterized in that: The bottom mold (5) forms a movable structure with the push rod (401) through the rod groove (402), and the outer diameter of the push rod (401) matches the inner diameter of the rod groove (402), and both the push rod (401) and the rod groove (402) are inclined.

7. A pressure-boosting core mold according to claim 5, characterized in that: The bottom mold (5) forms a sliding structure through the slide plate (403) and the slide rail (404), and the bottom of the slide plate (403) slides with the outer wall of the slide rail (404), and the bottom of the slide rail (404) is fixed with the top of the mounting base (6).

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