A processing die for a front mould inclined roof type fresh-keeping box cover

Abstract

This utility model discloses a front-mold inclined-top type food storage box lid processing mold, relating to the field of food storage box lid injection molding technology. It includes a top plate, with a guide block at the lower end of the top plate. Multiple elastic movable guide rails are uniformly fixedly connected to the middle of the lower surface of the guide block. An inclined top is provided at the lower end of each elastic movable guide rail. Polyimide plates are fixedly connected to the inner walls on both sides of the lower end of the inclined top. An upper forming mold is sleeved on the outside of the inclined top, and a lower forming mold is provided at the lower end of the upper forming mold. This utility model uses a composite structure of elastic movable guide rails, inclined tops, and polyimide plates, combined with a mechanical drive and elastic reset mechanism, to optimize the front mold undercut problem within a limited mold space. The elastic movable guide rails, with their flexible compensation characteristics, ensure precise and stable movement of the inclined top, controlling positioning deviation within a very small range and significantly reducing demolding jamming. The inclined top body provides rigid ejection force through mechanical drive, effectively separating the finished product from the mold.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology for food storage box lids, specifically a front-mold inclined top type food storage box lid processing mold. Background Technology

[0002] As a core component of kitchenware, food storage container lids must meet essential design requirements such as airtight sealing, lightweight design, and ease of use. Thin-walled food storage container lids have become a mainstream market trend due to their lower material usage and high portability. While the thin-walled structure improves the user experience, it also presents significant challenges to injection molding: the reduced thickness of the center layer of the melt in the flow section leads to a faster cooling rate and increased flow resistance. High-speed, high-pressure filling, high mold temperature assistance, and a low-pressure-loss hot runner system are necessary to ensure molding quality.

[0003] The food storage container lid mold uses a moving mold inclined ejector mechanism to achieve demolding. In the traditional food storage container lid mold, the mold and the molded part are mechanically interlocked during the demolding process, which prevents the product from smoothly leaving the mold cavity. Utility Model Content

[0004] This utility model provides a front mold slanted top type food storage box lid processing mold, which has a composite structure of front mold slanted top through mechanical drive + elastic reset, which efficiently solves the problem of front mold undercut within a limited space. It has the core advantages of simplified structure, controllable cost and reliable operation, so as to solve the problem of front mold undercut.

[0005] This utility model provides the following technical solution: a front mold slanted top type food storage box lid processing mold, comprising a top plate, a guide block provided at the lower end of the top plate, a plurality of elastic movable guide rails uniformly fixedly connected to the middle of the lower surface of the guide block, a slanted top provided at the lower end of each elastic movable guide rail, a polyimide plate fixedly connected to the inner walls on both sides of the lower end of the slanted top, an upper forming mold sleeved on the outside of the slanted top, and a lower forming mold provided at the lower end of the upper forming mold.

[0006] As a preferred embodiment of this utility model, the lower end of the lower forming mold is uniformly provided with multiple supporting slide plates and V-shaped slide plates.

[0007] As a preferred embodiment of this utility model, the lower ends of the supporting slide plate and the V-shaped slide plate are fixedly connected to a base plate, and both sides of the upper surface of the base plate are fixedly connected to side plates.

[0008] As a preferred embodiment of this utility model, a fixed mold is fitted onto the outer wall of the upper forming mold.

[0009] As a preferred embodiment of this utility model, the outer wall of the lower molding mold is fitted with a moving mold, and the top plate is evenly provided with a main injection port and multiple secondary injection ports in the middle.

[0010] As a preferred embodiment of this utility model, the lower end of the main injection port is fixedly connected to the main injection tube, and the lower ends of the secondary injection ports are all fixedly connected to secondary injection tubes.

[0011] As a preferred embodiment of this utility model, the upper forming mold and the lower forming mold are provided with forming mold plates inside.

[0012] Compared with the prior art, this utility model provides a front-mold slanted-top type food storage box lid processing mold, which has the following beneficial effects: 1. A front-mold inclined top type food storage box lid processing mold, which uses a composite structure of elastic movable guide rail, inclined top and polyimide plate, combined with mechanical drive and elastic reset mechanism, optimizes the front mold undercut problem in limited mold space. The elastic movable guide rail has flexible compensation characteristics to ensure accurate and stable movement of the inclined top, and the positioning deviation is controlled within a very small range, which significantly reduces demolding jamming. The inclined top body provides rigid ejection force through mechanical drive, which can effectively remove the finished product from the mold. The polyimide plate covering the contact surface between the inclined top and the injection molded finished product, together with the low coefficient of friction and high temperature resistance and wear resistance of polyimide material, makes the demolding process smoother.

[0013] 2. This type of front-mold slanted-top food storage box lid processing mold achieves the simultaneous production of two cast products by setting main and secondary injection ports and corresponding injection tubes. The main injection port and main injection tube are responsible for the main molten material transportation, ensuring a sufficient and stable supply of molten material. The secondary injection port and secondary injection tube precisely divert the flow, allowing the two products to be formed simultaneously. This setting can improve production efficiency. Compared with traditional single-piece production, it can reduce the number of frequent mold opening and closing, and reduce equipment wear, energy consumption and low efficiency. Attached Figure Description

[0014] Figure 1 An isometric view of the overall mold for processing a front-mold angled top type food storage box lid; Figure 2 An isometric view of the demolding mechanism of a front-mold inclined top type food storage box lid processing mold; Figure 3 Axonometric view of the sloping top of a mold for processing a front-mold sloping top type food storage box lid; Figure 4 Axonometric view of the forming die section of a front-mold sloping top type food storage box lid processing mold; Figure 5 An isometric view of the injection molding mechanism of a front-mold angled top type food storage box lid processing mold; Figure 6 This is an isometric view of the bottom support of a front-mold sloping top type food storage box lid processing mold.

[0015] In the diagram: 1. Top plate; 2. Guide block; 3. Elastic movable guide rail; 4. Angled ejector; 5. Polyimide plate; 6. Upper molding mold; 7. Lower molding mold; 8. Support slide plate; 9. V-shaped slide plate; 10. Bottom plate; 11. Side plate; 12. Fixed mold; 13. Moving mold; 14. Main injection port; 15. Secondary injection port; 16. Main injection tube; 17. Secondary injection tube; 18. Molding mold plate. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-6 This utility model discloses a front mold slanted top type food storage box lid processing mold, including a top plate 1, a guide block 2 is provided at the lower end of the top plate 1, a plurality of elastic movable guide rails 3 are uniformly fixedly connected to the middle of the lower surface of the guide block 2, a slanted top 4 is provided at the lower end of each elastic movable guide rail 3, a polyimide plate 5 is fixedly connected to the inner wall on both sides of the lower end of the slanted top 4, an upper forming mold 6 is sleeved on the outside of the slanted top 4, and a lower forming mold 7 is provided at the lower end of the upper forming mold 6.

[0018] In this implementation scheme, during mold parting, the elastic movable guide rail 3 utilizes its flexible compensation characteristics to control the movement direction and speed of the inclined ejector 4, reducing positioning deviation and jamming. The inclined ejector 4 ejects the finished product under mechanical drive, and the polyimide plate 5 covering its surface, with its low coefficient of friction, makes demolding smoother. During reset, the elastic reset mechanism uses elastic elements to restore the inclined ejector 4, the elastic movable guide rail 3, etc. to their initial positions.

[0019] Specifically, the lower end of the lower forming mold 7 is evenly provided with multiple supporting slide plates 8 and V-shaped slide plates 9.

[0020] In this implementation scheme, the support slide plate 8 and the V-shaped slide plate 9 assist in guiding the mold during mold opening and closing to ensure accurate mold closing.

[0021] Specifically, a base plate 10 is fixedly connected to the lower end of the supporting skateboard 8 and the V-shaped skateboard 9, and side plates 11 are fixedly connected to both sides of the upper surface of the base plate 10.

[0022] In this embodiment, the side plate 11 on the base plate 10 can serve as a support and connection, and the base plate 10 can be fixedly connected to the injection molding machine.

[0023] Specifically, the outer wall of the upper forming mold 6 is fitted with a fixed mold 12.

[0024] In this embodiment, the upper forming mold 6 is fitted onto the fixed mold 12 to facilitate the maintenance of the upper forming mold 6.

[0025] Specifically, the outer wall of the lower molding mold 7 is fitted with a moving mold 13, and the top plate 1 is evenly provided with a main injection port 14 and multiple secondary injection ports 15.

[0026] In this embodiment, the lower forming mold 7 is mounted on the moving mold 13 to facilitate the maintenance of the lower forming mold 7.

[0027] Specifically, the lower end of the main injection port 14 is fixedly connected to the main injection tube 16, and the lower end of each secondary injection port 15 is fixedly connected to a secondary injection tube 17.

[0028] In this embodiment, the main injection port 14 and the main injection tube 16 are responsible for conveying the main molten material to the main area of ​​the molding die plate 18, while the secondary injection port 15 and the secondary injection tube 17 divert the flow so that the molten material enters the two cavities at the same time.

[0029] Specifically, the upper forming mold 6 and the lower forming mold 7 are provided with forming mold plates 18.

[0030] In this embodiment, the forming mold 18 can complete the forming of the mold.

[0031] The working principle and usage process of this utility model are as follows: During injection molding, the injection molding machine injects molten material. The main injection port 14 and the main injection tube 16 are responsible for transporting the main molten material to the main area of ​​the molding plate 18. The secondary injection port 15 and the secondary injection tube 17 divert the flow, allowing the molten material to enter the two cavities simultaneously. The material is then evenly filled into the cavity formed by the upper molding mold 6 and the lower molding mold 7 by the guide block 2. During demolding, the moving mold 13 separates from the fixed mold 12. The elastic movable guide rail 3 plays a flexible compensation role, controlling the movement direction and speed of the inclined ejector 4 to reduce positioning deviation and jamming. The inclined ejector 4 ejects the finished product under mechanical drive. The polyimide plate 5 covering its surface has a low coefficient of friction, making demolding smoother. During reset, the elastic reset mechanism uses elastic elements to restore the inclined ejector 4, the elastic movable guide rail 3, etc. to their initial positions. The support slide plate 8 and the V-shaped slide plate 9 assist in guiding and ensure accurate mold closing. This mold solves the problem of front mold undercut in a limited space, realizing the one-time molding of two food storage box lids and improving production efficiency.

[0032] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A front-mold inclined top type food storage box lid processing mold, comprising a top plate (1), characterized in that: The top plate (1) is provided with a flow guide block (2) at its lower end. Multiple elastic movable guide rails (3) are uniformly fixedly connected to the middle of the lower surface of the flow guide block (2). Each elastic movable guide rail (3) is provided with an inclined top (4) at its lower end. Polyimide plates (5) are fixedly connected to the inner walls on both sides of the lower end of the inclined top (4). An upper forming mold (6) is sleeved on the outside of the inclined top (4). A lower forming mold (7) is provided at the lower end of the upper forming mold (6).

2. The front-mold inclined top type food storage box lid processing mold according to claim 1, characterized in that: The lower end of the lower forming mold (7) is evenly provided with multiple support slides (8) and V-shaped slides (9).

3. The front-mold angled-top type food storage box lid processing mold according to claim 2, characterized in that: The lower ends of the supporting slide plate (8) and the V-shaped slide plate (9) are fixedly connected to a base plate (10), and the two sides of the upper surface of the base plate (10) are fixedly connected to side plates (11).

4. The front-mold angled-top type food storage box lid processing mold according to claim 1, characterized in that: The upper forming mold (6) is fitted with a fixed mold (12) on its outer wall.

5. The front-mold inclined top type food storage box lid processing mold according to claim 1, characterized in that: The outer wall of the lower molding mold (7) is fitted with a moving mold (13), and the top plate (1) is evenly provided with a main injection port (14) and multiple secondary injection ports (15).

6. The front-mold inclined top type food storage box lid processing mold according to claim 5, characterized in that: The lower end of the main injection port (14) is fixedly connected to the main injection tube (16), and the lower end of each of the secondary injection ports (15) is fixedly connected to a secondary injection tube (17).

7. The front-mold inclined top type food storage box lid processing mold according to claim 1, characterized in that: The upper forming mold (6) and the lower forming mold (7) are provided with forming mold plates (18).

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