A new forming die for red light eye protection instrument

Abstract

The utility model relates to the technical field of plastic mould injection technology discloses a new forming die for red light eye protection instrument, including fixed mould component and movable mould component, the fixed mould component is equipped with A board, hot runner board, panel and heat insulating board, the heat insulating board sets up in the panel directly above, the hot runner board sets up in the panel directly below, the A board inside is provided with former kernel, the movable mould component is equipped with B board, square iron and bottom plate, the bottom plate sets up in B board directly below, is used for supporting square iron, the B board inside is provided with rear mould kernel, in the utility model, through adopting the ejection system design of 90 degree turning, the rotating arrangement of ejector pin plate and square iron, the left and right sides of reset needle are changed, the structure effectively avoids product reverse buckling area, promotes compatibility, is especially suitable for complex eye protection instrument product, the reset needle of middle part is additionally arranged, strengthens stability, prevents deformation, remarkably improves positioning accuracy and mould life under keeping original size.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold injection technology, and in particular to a new type of molding mold for a red light eye protection device. Background Technology

[0002] With increasing public concern about vision health, red light eye massagers, as a new type of eye care device, are gradually being widely used in daily life and healthcare. Their structures often employ complex curved surfaces and designs, placing higher demands on the molding precision and consistency of the product casing. Therefore, to achieve efficient mass injection molding production of the structural components of eye massagers, the design and manufacturing of molding dies has become a crucial link in the industrial chain of this type of product.

[0003] Currently, existing eye protection device molds typically employ a traditional symmetrical ejection system. Ejector pins are driven by an ejector plate to demold the product, while the return mechanism is located on the moving mold side, relying on a return spring and the A-plate surface abutting against the top surface of the return pin to reset the ejector plate. While this structure has a good foundation for general product injection molding, it often encounters problems such as limited ejection position, structural interference, and difficulty in demolding when injection molding products like red light eye protection devices with multiple undercuts, high curvature surfaces, and multiple cavities.

[0004] In traditional injection mold structures, ejector pins are typically located at the top and bottom (upper and lower sides) of the mold. However, in products like red light eye protection devices, the structure has four undercut positions, which conflict with the conventional pin placement area, making the traditional mold structure unsuitable for the product molding requirements. Increasing the mold size to avoid this problem would significantly increase manufacturing costs and require higher-tonnage injection molding machines, resulting in resource waste and difficulty in meeting the machine requirements specified by existing customers. Therefore, a novel molding die for red light eye protection devices is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a new type of molding die for a red light eye protection device, which aims to improve the traditional return pin arrangement method, which is prone to interference with the product structure, cannot be compatible with design requirements, and causes increased mold costs, which in turn affects the size of the production machine and will result in higher costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a new type of molding die for a red light eye protection device, comprising a fixed mold assembly and a moving mold assembly; The fixed mold assembly includes an A plate, a hot runner plate, a panel, and a heat insulation plate. The heat insulation plate is located directly above the panel, and the hot runner plate is located directly below the panel. The front mold core is located inside the A plate. The moving mold assembly includes a B plate, a square iron, and a base plate. The base plate is located directly below the B plate and is used to support the square iron. The B plate contains a rear mold core. The moving mold assembly is equipped with an ejection mechanism, including an ejection plate, a return pin, and a spring. The ejection plate is located directly above the base plate, and the return pin and spring are located inside the ejection plate to achieve demolding and automatic reset of the finished product.

[0007] Furthermore, the ejector plate slides in a direction perpendicular to the mold closing direction, and the square iron is arranged with a 90-degree turn so that the return structure avoids the undercut area of ​​the eye protection device.

[0008] Furthermore, one end of the spring abuts against the outside of the return pin, and the other end of the spring abuts against the inner wall of the ejector plate. The spring is used to provide a restoring force and to make the ejector plate automatically reset after demolding.

[0009] Furthermore, a positioning ring is provided on the upper surface of the heat insulation plate, which is used to position the installation mold.

[0010] Furthermore, the hot runner plate and the heat insulation plate are connected by bolts, and the heat conduction is reduced through the channels inside the panel, thereby improving the thermal efficiency of the mold.

[0011] Furthermore, the inner side of the square iron is provided with a wear-resistant plate, which is used to reduce wear between the plates during the ejection process and improve the service life of the structure.

[0012] Furthermore, the bottom of the mold is provided with ejector plate guide pillars and multiple guide holes for the extension and retraction of the return pins, preventing deviation and enhancing ejection stability.

[0013] Furthermore, multiple return pins are provided, and the multiple return pins are arranged symmetrically inside plate B.

[0014] This utility model has the following beneficial effects: 1. In this utility model, while keeping the original mold base dimensions unchanged, the ejector plate and two square irons in the ejection system are rotated 90 degrees, and the return pins originally located on the upper and lower sides are changed to be set on the left and right sides. This structural layout avoids the problem of conflict between the traditional return pins and the product's undercut structure, effectively improving the compatibility and applicability of the mold ejection structure. It is particularly suitable for eye protection device products with multiple cavities and complex structures, which not only saves mold space but also reduces the cost of upgrading injection molding equipment. At the same time, the addition of a return pin in the middle improves the return stability of the ejector plate, prevents deformation during the ejection process, and significantly enhances the service life of the mold.

[0015] 2. In this utility model, by setting a multi-layer composite structure of hot runner plate and heat insulation plate, combined with wear-resistant plate and reasonably arranged guide structure, the uniform distribution of molten plastic and stable heat control are ensured, achieving a dual improvement in molding efficiency and quality; the ejection mechanism adopts an ejection plate to drive the matching return pin and spring structure, which can realize the functions of quick demolding and automatic reset, improving the efficiency of automated molding; at the same time, the return pin can achieve an effective and fast return effect; the whole design is highly integrated and suitable for mass injection molding of complex products such as the plastic shell of red light eye protection device, with outstanding advantages of high molding efficiency, low mold cost and durable structure. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of a molding die for a novel red light eye protection device proposed in this utility model; Figure 2 This is a schematic diagram of the B plate portion of the molding die for a novel red light eye protection device proposed in this utility model. Figure 3 This is a schematic diagram of the return pin portion of the molding die for a novel red light eye protection device proposed in this utility model. Figure 4 This is a cross-sectional schematic diagram of a molding die for a novel red light eye protection device proposed in this utility model. Figure 5 This is a schematic diagram of the wear-resistant plate portion of the molding die for a novel red light eye protection device proposed in this utility model. Figure 6 This is a schematic diagram of the square iron part of the molding die for a novel red light eye protection device proposed in this utility model. Figure 7 This is an exploded view of the structure of a molding die for a novel red light eye protection device proposed in this utility model.

[0017] Legend: 1. Heat insulation plate; 2. Panel; 3. Hot runner plate; 4. Locating ring; 5. A plate; 6. B plate; 7. Square iron; 8. Base plate; 9. Ejector plate; 10. Return pin; 11. Spring; 12. Wear-resistant plate; 13. Rear mold core; 14. Front mold core. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 - Figure 7 This utility model provides an embodiment of a novel molding die for a red light eye protection device, comprising a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes an A plate 5, a panel 2, and a heat insulation plate 1. The heat insulation plate 1 is positioned directly above the panel 2 to block heat conduction. A hot runner plate 3 is positioned directly below the panel 2. A front mold core 14 is disposed inside the A plate 5. The moving mold assembly includes a B plate 6, a square iron 7, and a bottom plate 8. A rear mold core 13 abuts against the front mold core 14 to form a cavity. The bottom plate 8 is positioned directly below the B plate 6 to support and connect the square iron 7. The rear mold core 13 is disposed inside the B plate 6. The moving mold assembly includes an ejection mechanism, comprising an ejection plate 9, a return pin 10, and a spring 11. The ejection plate 9 is positioned directly above the bottom plate 8 to eject the product. The return pin 10 and the spring 11 are disposed inside the ejection plate 9 to achieve demolding and automatic reset of the finished product. The ejection plate 9 slides in a direction perpendicular to the mold closing direction. The return structure is guided by square irons 7 on both sides, which are arranged at a 90-degree angle to avoid the undercut area of ​​the eye protection device. One end of the spring 11 abuts against the outside of the return pin 10, and the other end of the spring 11 abuts against the inner wall of the ejector plate 9, providing a rebound force and making the ejector plate 9 automatically reset after demolding. The upper surface of the heat insulation plate 1 is provided with a positioning ring 4 for positioning and installing the mold. The hot runner plate 3 is connected to the heat insulation plate 1 by bolts, and the heat conduction is reduced through the channel between the heat insulation plate 1 and the inside of the panel 2 to improve the thermal efficiency of the mold. The inner side of the square iron 7 is provided with a wear-resistant plate 12 to reduce the wear between the plates during the ejection process and improve the service life of the structure. The bottom of the mold is provided with ejector plate guide pillars and multiple guide holes for the extension and retraction of the return pin 10, preventing deviation and enhancing ejection stability. Multiple return pins 10 are provided, and the multiple return pins 10 are symmetrically arranged inside the B plate 6.

[0020] Specifically, the mold achieves efficient heat management and uniform molten material distribution through the hot runner plate 3 and heat insulation plate 1 of the fixed mold assembly; the A plate 5 and B plate 6 of the moving mold assembly serve as the main template structure, forming a precision cavity after the front mold core 14 and the rear mold core 13 are closed. The A plate 5 and B plate 6 cooperate to support the front mold core 14 and the rear mold core 13. The ejection mechanism uses a 90-degree rotating square iron 7 to guide the movement of the ejection plate 9, effectively avoiding the undercut area of ​​the product; multiple return pins 10 and springs 11 cooperate to achieve stable ejection and automatic reset; the wear-resistant plate 12 extends the service life of the mold; this design achieves efficient and precise molding of the red light eye protection device shell, improving production efficiency and product yield.

[0021] Working principle: When the mold is needed, panel 2, heat insulation plate 1, and hot runner plate 3 together form the fixed mold part, realizing product shaping and hot runner temperature control; front mold core 14 and rear mold core 13, A plate 5 and B plate 6 serve as the main load-bearing structure of the mold, and are precisely aligned and combined through positioning ring 4; base plate 8 supports the entire moving mold part, and ejector plate 9 is connected to spring 11 through return pin 10, which can quickly reset after product molding; the core improvement is that the ejector plate 9 and the two square irons 7 are rotated 90 degrees as a whole, and the return pins 10 are set on the left and right sides, avoiding the four undercut areas of the red light eye protection device product, and avoiding interference with the product structure when the ejector pins are ejected; at the same time, two return pins 10 are added in the middle of the mold to improve ejection stability, prevent deformation of the ejector plate due to uneven force, and ensure the reliability of mold ejection; the return pins 10 are driven by spring 11 and the surface of the contact plate 5 to achieve automatic reset; wear-resistant plate 12 is set in the high-frequency contact area, effectively extending the service life of the mold.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A molding die for a novel red light eye protection device, characterized in that, Includes fixed mold components and moving mold components; The fixed mold assembly is provided with an A plate (5), a hot runner plate (3), a panel (2) and a heat insulation plate (1). The heat insulation plate (1) is located directly above the panel (2), and the hot runner plate (3) is located directly below the panel (2). The A plate (5) is provided with a front mold core (14). The moving mold assembly is provided with a B plate (6), a square iron (7) and a base plate (8). The base plate (8) is located directly below the B plate (6) and is used to support the square iron (7). The B plate (6) is provided with a rear mold core (13). The moving mold assembly is provided with an ejection mechanism, including an ejection plate (9), a return pin (10) and a spring (11). The ejection plate (9) is located directly above the base plate (8), and the return pin (10) and the spring (11) are located inside the ejection plate (9) to realize the demolding of the finished product and automatic reset.

2. The molding die for a novel red light eye protection device according to claim 1, characterized in that: The ejector plate (9) slides in a direction perpendicular to the mold closing direction, and the square iron (7) is arranged with a 90-degree turn so that the return structure avoids the undercut area of ​​the eye protection device.

3. The molding die for a novel red light eye protection device according to claim 2, characterized in that: One end of the spring (11) abuts against the outside of the return pin (10), and the other end of the spring (11) abuts against the inner wall of the ejector plate (9). The spring (11) is used to provide a rebound force and make the ejector plate (9) automatically reset after demolding.

4. The molding die for a novel red light eye protection device according to claim 1, characterized in that: The heat insulation plate (1) is provided with a positioning ring (4) on its upper surface, which is used to position the installation mold.

5. The molding die for a novel red light eye protection device according to claim 4, characterized in that: The hot runner plate (3) is connected to the heat insulation plate (1) by bolts, and the heat conduction is reduced through the channel inside the panel (2), thereby improving the thermal efficiency of the mold.

6. The molding die for a novel red light eye protection device according to claim 1, characterized in that: The inner side of the square iron (7) is provided with a wear-resistant plate (12), which is used to reduce the wear between the plates during the ejection process and improve the service life of the structure.

7. The molding die for a novel red light eye protection device according to claim 1, characterized in that: The bottom of the mold is provided with ejector plate guide pillars and multiple guide holes for the extension and retraction of the return pin (10) to prevent displacement and enhance ejection stability.

8. The molding die for a novel red light eye protection device according to claim 1, characterized in that: The return pins (10) are provided in a plurality of manner and are arranged symmetrically on the left and right sides inside the B plate (6).

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