CN216782477U - Bluetooth headset charging box base shell injection molding structure - Google Patents

Abstract

The utility model relates to an injection molding structure of a base shell of a Bluetooth headset charging bin, which comprises a main runner and a product cavity, wherein the product cavity is a symmetrical body constructed around a datum line L, the top of one end of the product cavity is provided with an injection molding hole, and the center of the injection molding hole is positioned on the datum line L; the lower reaches of the main runner are provided with point glue inlet runners which are directly communicated with the injection molding hole, and the residual water gap forming part after injection molding is positioned in the injection molding hole. The point glue inlet flow channel extends along the reference line L, the point glue inlet flow channel is gradually narrowed from the main flow channel to the product cavity, and the diameter of the narrowed tail end is smaller than the diameter of the injection molding hole. The utility model adopts a point glue feeding form, reduces inclined subsurface flow passages, has smooth glue feeding, is positioned on the injection molding hole, has a center on the reference line L, has simple glue feeding structure, balanced glue feeding pressure and uniform thickness of the injection molding product, improves the product quality and has high yield; the plastic residue is few, and the raw and other materials are saved, and the residual mouth of a river shaping part of moulding plastics is located the hole of moulding plastics, and the demolding is simple and convenient.

Description

Bluetooth headset charging box base shell injection molding structure

technical field

The utility model relates to the technical field of injection moulds, in particular to an injection moulding structure of a Bluetooth earphone charging bin base shell.

Background technique

As shown in Figure 1, at present, the injection molding of the base shell of the Bluetooth earphone charging box is usually in the form of submerged glue. This injection molding structure has the following defects: 1. The glue feeding is not balanced, and it is prone to uneven thickness, or even lack of glue, and the product defect rate is high; 2. Oblique diving into the glue, not only there is a lot of plastic residue at the submerged gate position, which wastes raw materials, but also increases the difficulty of giving the mold, and increases the cost of mold development and use.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide an injection molding structure of the base shell of the Bluetooth earphone charging bin, which can well solve the above technical problems.

To achieve the above object, the utility model adopts the following technical solutions:

The injection molding structure of the base shell of the Bluetooth headset charging box includes a main channel and a product cavity. The product cavity is a symmetrical body built around the reference line L. An injection hole is provided at the top of one end of the product cavity, and the center of the injection hole is located on the reference line. L; the downstream of the main flow channel is provided with a dispensing flow channel, the dispensing flow channel is directly connected with the injection hole, and the nozzle molding part remaining in the injection molding is located in the injection hole.

In the above solution, the dispensing flow channel extends along the reference line L, and the dispensing flow channel gradually narrows from the main flow channel to the product cavity, and the diameter of the narrowed end is smaller than the diameter of the injection hole.

In the above solution, the convex top surface of the nozzle forming part is not higher than the port surface of the injection hole.

Compared with the prior art, the injection molding structure of the bluetooth earphone charging bin base shell provided by the utility model adopts the form of dispensing glue, reduces the oblique submerged flow channel, and the glue feeding is smooth, and the glue feeding point is located on the injection hole, and the center of the injection hole is located on the reference On the line L, the following beneficial effects are obtained: 1. The glue feeding structure is simple, the glue feeding pressure is balanced, the thickness of the injection molded product is uniform, the product quality is improved, and the yield is high; The molding part is located in the injection hole, the mold release is simple, the mold development is easy, and the investment cost is low, which is in line with industrial promotion and utilization.

Description of drawings:

Accompanying drawing 1 is the prior art structure schematic diagram;

Accompanying drawing 2 is the structure schematic diagram of the preferred embodiment of the present utility model;

FIG. 3 is a schematic diagram of the production of the embodiment of FIG. 2 .

Detailed ways:

The concept, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

It should be noted that, in the description of the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationship terms are based on the directions or positional relationships shown in the drawings, which are for ease of description only, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be It is understood as a limitation of the present invention.

Referring to Figures 2 and 3, it is a schematic diagram of a preferred embodiment of the present invention. The present invention relates to an injection molding structure of a Bluetooth earphone charging bin base shell, which includes a main channel 1 and a product cavity 2 that are constructed together on a mold. , the product cavity 2 is a symmetrical body constructed around the reference line L, an injection hole 21 is provided on the top of one end of the product cavity 2, and the center of the injection hole 21 is located on the reference line L. The product cavity 2 in this embodiment is U-shaped, and the injection hole 21 is arranged on the bottom of the U-shaped. A dispensing flow channel 11 is provided downstream of the main flow channel 1 . The dispensing flow channel 11 is directly connected to the injection hole 21 , and the nozzle forming part 3 remaining after injection molding is located in the injection hole 21 . The utility model realizes the form of dispensing glue, reduces the inclined submerged flow channel, makes the glue feeding smooth, and the glue feeding point is located on the injection hole, and the center of the injection hole is located on the reference line L, thereby simplifying the glue feeding structure, easy to develop the mold, and easy to inject. The glue pressure is balanced to ensure that the thickness of the injection molded product is uniform, the injection molded product is of high quality, the defect rate is low, and the plastic residue is less, saving raw materials, and the nozzle molding part of the injection molding residue is located in the injection hole, and the mold release is easy.

Referring to FIGS. 2 and 3 , in this embodiment, the dispensing flow channel 11 extends along the reference line L, and the dispensing flow channel 11 gradually narrows from the main flow channel 1 to the product cavity 2 . The diameter of the narrowed end is smaller than the diameter of the injection hole 21, and the glue is fed in a straight line. Input force to ensure the filling and fullness of the colloid, and improve the injection quality. The diameter of the narrowed end of the dispensing flow channel 11 is smaller than the diameter of the injection hole 21 , which facilitates glue collection and mold release separation, and prevents the nozzle molding part 3 from affecting the shape of the injection product. Further, the convex top surface of the nozzle forming part 3 is not higher than the port surface of the injection hole 21, which is conducive to mold development and mold release.

Referring to FIGS. 2 and 3 , in this embodiment, two dispensing flow channels 11 are symmetrically arranged downstream of the main flow channel 1 , and each dispensing flow channel 11 corresponds to a product cavity 2 , so that multiple products can be simultaneously Forming, and ensure the balance of glue feeding, improve production efficiency and quality.

The injection molding structure of the bluetooth earphone charging bin base shell provided by the utility model adopts the form of point injection, reduces the oblique submerged flow channel, and the injection is smooth, and the injection point is located on the injection hole, and the center of the injection hole is located on the reference line L. The following beneficial effects are obtained: 1. The glue feeding structure is simple, the glue feeding pressure is balanced, the thickness of the injection molded product is uniform, the product quality is improved, and the yield rate is high; 2. There are less plastic residues, saving raw materials, and the nozzle molding parts remaining in the injection molding are located in the injection hole. , The mold is simple, the mold development is easy, the investment cost is low, and it is in line with industrial promotion and utilization.

The present utility model has been described in detail above in conjunction with the embodiments, only to illustrate the technical concept and characteristics of the present utility model. Therefore, all equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. The injection molding structure of the base shell of the Bluetooth earphone charging bin is characterized in that: it includes a main channel (1) and a product cavity (2), the product cavity (2) is a symmetrical body constructed around the reference line L, and the product cavity (2) ) is provided with an injection hole (21) at the top of one end, and the center of the injection hole (21) is located on the reference line L; the downstream of the main flow channel (1) is provided with a dispensing flow channel (11), and the dispensing flow channel (11) is directly communicated with the injection hole (21), and the nozzle forming part (3) remaining in the injection molding is located in the injection hole (21). 2. The injection molding structure of the base shell of the Bluetooth earphone charging compartment according to claim 1, characterized in that: the dispensing flow channel (11) extends along the reference line L, and the dispensing flow channel (11) extends from The main channel (1) gradually narrows toward the product cavity (2), and the diameter of the narrowed end is smaller than the diameter of the injection hole (21). 3. The bluetooth earphone charging bin base shell injection molding structure according to claim 1, characterized in that: the convex top surface of the nozzle forming part (3) is not higher than the port surface of the injection hole (21).

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