Spring buffer type anti-reverse glue nozzle

Abstract

The utility model discloses a spring buffer type anti-reverse glue nozzle, which belongs to the technical field of injection molding, and comprises a base body arranged in a cold runner main body, the cold runner main body is provided with an interface for connecting an injection molding machine, and a runner is arranged in the base body; the valve element is elastically connected to the base body, and the valve element is connected into the flow channel in a sliding mode; and the separation blade is arranged between the valve core and the outlet of the flow channel and is used for controlling the opening and closing of the flow channel when the valve core acts. According to the utility model, the valve core can move up and down under the action of the spring, the functions of glue feeding and pressure releasing are realized through contact and separation with an equipment gun nozzle (an injection molding machine nozzle), and when the injection molding machine nozzle presses the valve core downwards, the valve core overcomes the elastic force of the spring to move downwards, so that the baffle plate opens a runner outlet, and glue is allowed to enter a mold; after injection molding is completed, the nozzle of the injection molding machine retreats, the spring jacks up the valve core, the baffle plate seals the outlet of the runner, and meanwhile, the internal pressure of the runner is released, so that the sizing material is prevented from overflowing due to the pressure.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding, and particularly relates to a spring buffer type anti-backflow rubber injection nozzle. Background Art

[0002] In the injection molding process, the traditional cold runner design faces problems of improper pressure management, material waste, and mold contamination.

[0003] The improper pressure management is manifested as the pressure inside the mold rising sharply with the injection of the rubber material. The high-pressure environment not only easily causes the rubber material to overflow, forming defects such as flash and burrs, but also damages the mold itself and shortens its service life.

[0004] Material waste and mold contamination are manifested as a large amount of waste materials being generated during the injection molding process due to inaccurate control of the rubber material and improper pressure management. These waste materials not only increase the production cost but also cause an unnecessary burden on the environment. Content of the Utility Model

[0005] The purpose of the utility model is to provide a spring buffer type anti-backflow rubber injection nozzle to solve the problems of improper pressure management, material waste, and mold contamination faced by the traditional cold runner design in the injection molding process.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a spring buffer type anti-backflow rubber injection nozzle, comprising:

[0007] A base body, which is installed inside the main body of the cold runner. An interface for connecting an injection molding machine is provided on the main body of the cold runner, and a runner is provided inside the base body;

[0008] A valve core, which is elastically connected to the base body, and the valve core is slidably connected inside the runner;

[0009] And a retaining piece, which is arranged between the valve core and the outlet of the runner for controlling the on-off of the runner when the valve core moves.

[0010] As a further description of the above technical scheme:

[0011] One end of a spring is connected to the base body, and the other end is connected to the valve core.

[0012] As a further description of the above technical scheme:

[0013] The valve core moves up and down through the spring to contact and separate from the nozzle of the equipment.

[0014] As a further description of the above technical scheme:

[0015] A sealing member is arranged between the valve core and the main body of the cold runner.

[0016] As a further description of the above technical solution:

[0017] The baffle is sleeved and connected to the valve core.

[0018] To sum up, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0019] In the present utility model, through the spring support and the up-and-down movement mechanism of the valve core, combined with the action of the injection molding machine nozzle, precise glue injection and pressure release control are achieved; during the injection molding process, the injection molding machine nozzle presses down on the valve core, compresses the spring and pushes the valve core downward. This action increases the gap between the baffle and the runner outlet, allowing the molten rubber material to smoothly enter the mold. After the injection molding is completed, the injection molding machine nozzle retracts, and the spring gradually returns to its original state, pushing the valve core up to its original position. At this time, the baffle closes the runner outlet again, effectively blocking the further flow of the rubber material; at the same time, the rising of the valve core also provides a space for releasing pressure inside the runner, avoiding the problem of rubber material overflow caused by too high internal pressure; this design not only improves the stability and efficiency of the injection molding process, but also significantly reduces the risk of material waste and mold contamination. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a perspective view of a spring buffer type anti-backflow rubber injection nozzle.

[0022] Figure 2 It is a cross-sectional view of a spring buffer type anti-backflow rubber injection nozzle.

[0023] Figure 3 It is a usage state diagram of a spring buffer type anti-backflow rubber injection nozzle.

[0024] Legend Explanation:

[0025] 1 - Cold runner body; 2 - Substrate; 3 - Valve core; 4 - Baffle; 5 - Spring; 6 - Runner. Detailed Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are a part of the embodiments of the present invention, rather than all the embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0029] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0031] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Please refer to Figures 1-3, the present utility model provides a technical solution: a spring-buffered anti-backflow nozzle, comprising:

[0033] A base body 2, which is installed inside the main body 1 of the cold runner 6. An interface for connecting an injection molding machine is provided on the main body 1 of the cold runner 6. A runner 6 is provided inside the base body 2; as a support structure.

[0034] A valve core 3, which is elastically connected to the base body 2, and the valve core 3 is slidably connected inside the runner 6;

[0035] And a retaining piece 4, which is arranged between the valve core 3 and the outlet of the runner 6 and is used to control the on-off of the runner 6 when the valve core 3 moves.

[0036] One end of a spring 5 is connected to the base body 2, and the other end is connected to the valve core 3. It is used to provide elastic support force.

[0037] The valve core 3 moves up and down through the spring 5, making contact with and separating from the nozzle of the equipment. Realize the functions of injecting glue and releasing pressure, ensure sufficient support force to maintain the stable position of the valve core during the injection molding process, and quickly return to the original position after the injection molding is completed.

[0038] A sealing member is arranged between the valve core 3 and the main body 1 of the cold runner 6. To enhance the sealing effect and prevent the leakage of rubber material.

[0039] The retaining piece 4 is sleeved and connected to the valve core 3.

[0040] Working principle: Through the spring support and the up-and-down movement mechanism of the valve core, combined with the movement of the nozzle of the injection molding machine, precise control of glue injection and pressure release is achieved; during the injection molding process, the nozzle of the injection molding machine presses down on the valve core, compressing the spring and pushing the valve core downward. This action increases the gap between the retaining piece and the outlet of the runner, allowing the molten rubber material to smoothly enter the mold. After the injection molding is completed, the nozzle of the injection molding machine retracts, and the spring gradually returns to its original state, pushing the valve core up to its original position. At this time, the retaining piece closes the outlet of the runner again, effectively blocking the further flow of the rubber material; at the same time, the rising of the valve core also provides a space for releasing pressure inside the runner, avoiding the problem of rubber material overflow caused by too high internal pressure; this design not only improves the stability and efficiency of the injection molding process, but also significantly reduces the risk of material waste and mold contamination.

[0041] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its utility model concept, makes equivalent substitutions or changes, and should all be covered within the protection scope of the present utility model.

Claims

1. A spring-buffered anti-reverse glue nozzle, characterized in that Comprising: A base body, which is installed inside the cold runner main body, an interface for connecting an injection molding machine is provided on the cold runner main body, and a runner is provided inside the base body; A valve core, which is elastically connected to the base body, and the valve core is slidably connected inside the runner; And a retaining piece, the retaining piece is arranged between the valve core and the runner outlet, and is used to control the on-off of the runner when the valve core moves.

2. The spring buffer type anti-backflow rubber injection nozzle according to claim 1, characterized in that, One end of the spring is connected to the base body, and the other end is connected to the valve core.

3. A spring buffer type anti-backflow rubber injection nozzle according to claim 2, characterized in that, The valve core moves up and down through the spring, and contacts and separates from the equipment nozzle.

4. A spring-buffered anti-backflow nozzle according to claim 1, characterized in that A seal is provided between the valve core and the cold runner main body.

5. A spring buffer type anti-backflow nozzle according to claim 1, characterized in that , the retaining piece is sleeved and connected to the valve core.

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