Novel nozzle core valve needle guide structure

Abstract

The utility model discloses a novel nozzle core valve needle guide structure which comprises a nozzle core body and a runner penetrating through the two ends of the nozzle core body, one end of the runner is a glue inlet, the other end of the runner is a glue outlet, and a guide structure used for reducing deviation of a valve needle in the moving process is arranged in the nozzle core body. One end of the guide structure is of a flaring structure, and the other end of the guide structure is provided with a plurality of guide faces. The utility model has the beneficial effects that the original three-claw guide is changed into the guide structure in the nozzle core, the deviation of the valve needle in the moving process can be effectively reduced, the guide precision is improved, the reject ratio of the appearance of a product is reduced, and the guide structure in the nozzle core can effectively reduce the maintenance frequency of a hot runner, so that the service life of the hot runner is prolonged. The hot runner maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hot runner system technology, and in particular to a novel nozzle core valve needle guide structure. Background Technology

[0002] (see Figure 1 The traditional nozzle core valve needle guide structure adds a three-grip guide accessory 2 to the nozzle core 1 to guide the valve needle. It is suitable for various materials and glue injection positions. However, if the customer has high requirements for the glue outlet, the traditional nozzle core valve needle guide structure may result in unstable valve needle guidance and subsequent appearance problems such as glue outlet burrs.

[0003] Currently, a Chinese patent authorization announcement number CN208263334U discloses a needle valve type valve needle guide diverter shuttle. This patent also uses three guide plates for guidance, which is consistent with the background technology mentioned above. Therefore, it also has the same problems as the background technology.

[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a novel nozzle valve needle guide structure to address the above-mentioned shortcomings and defects of the existing technology.

[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0007] A novel nozzle core valve needle guide structure includes a nozzle core body and a flow channel penetrating both ends of the nozzle core body. One end of the flow channel is a glue inlet, and the other end of the flow channel is a glue outlet. The characteristic feature is that a guide structure is provided inside the nozzle core body to reduce the deviation of the valve needle during movement. One end of the guide structure is a flared structure, and the other end of the guide structure is provided with several guide surfaces.

[0008] In a preferred embodiment of the present invention, the plurality of guide surfaces include a first guide surface, a second guide surface, a third guide surface, and a fourth guide surface that are vertically spaced apart at the other end of the guide structure.

[0009] In a preferred embodiment of this utility model, the interior of the guide structure is a cavity structure.

[0010] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: This utility model changes the previous three-grip guide to an internal guide structure of the nozzle core, which can effectively reduce the deviation of the valve needle during movement, improve the guiding accuracy, reduce the product appearance defect rate, and the internal guide structure of the nozzle core can effectively reduce the number of hot runner maintenance times and save hot runner maintenance costs. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the existing technology.

[0013] Figure 2 This is the front view of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0016] See Figures 2 to 3 The novel nozzle valve needle guide structure shown includes a nozzle body 10 and a flow channel 10a penetrating both ends of the nozzle body 10. One end of the flow channel 10a is a glue inlet 11, and the other end of the flow channel 10a is a glue outlet 12.

[0017] Inside the valve needle body 10, a guide structure 20 is provided to reduce deviations in the valve needle during movement. One end of the guide structure 20 is a flared structure 21, and the other end of the guide structure 20 is provided with several guide surfaces 22. In this embodiment, the several guide surfaces 22 include a first guide surface 22a, a second guide surface 22b, a third guide surface 22c, and a fourth guide surface 22d, which are vertically spaced at the other end of the guide structure 20.

[0018] The interior of the guide structure 20 is a cavity structure 20a. The cavity structure 20a is connected to the flow channel 10a.

[0019] This invention adds four guide surfaces inside the nozzle core body 20. These four guide surfaces enable more precise guidance of the valve needle during movement. The guide height of the nozzle core body 20 needs to exceed the movement stroke of the valve needle, ensuring that the valve needle remains within the guide height of the nozzle core throughout its movement. The addition of the guide structure 20 to the nozzle core body 10 reduces deviations in the valve needle during movement, improves guidance accuracy, reduces the rate of defects in the product's nozzle appearance, and effectively reduces the frequency of hot runner maintenance, saving on hot runner maintenance costs.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel nozzle core valve needle guide structure, comprising a nozzle core body and a flow channel penetrating through both ends of the nozzle core body, one end of the flow channel being a glue inlet, the other end of the flow channel being a glue outlet, characterized in that, Inside the valve core body, a guide structure is provided to reduce deviation of the valve needle during movement. One end of the guide structure is a flared structure, and the other end of the guide structure is provided with several guide surfaces.

2. A novel mouthpiece valve needle guide structure according to claim 1, characterized in that, The plurality of guide surfaces include a first guide surface, a second guide surface, a third guide surface, and a fourth guide surface that are vertically spaced at the other end of the guide structure.

3. A new type of mouthpiece valve needle guide structure according to claim 1, characterized in that, The guide structure has a hollow interior.

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