Bluetooth earphone shell injection molding tooling

Abstract

This utility model provides a Bluetooth headset shell injection molding fixture, relating to the field of Bluetooth headset shell injection molding technology. It includes an injection mold base, an injection top mold mounted on the upper side of the base, and a filter injection molding assembly mounted on the inner side of the base. The filter injection molding assembly includes an installation groove formed inside the base, an inner mold mounted inside the installation groove, and a connection port on the right side of the base, with an injection tube mounted on the right side of the connection port. Through the arrangement of the inner mold, connection hole, and locking screw, and the positioning grooves, the inner mold is initially positioned during installation, preventing displacement during placement into the installation groove. The locking screw then secures the inner mold, improving its stability within the base. Furthermore, when the inner mold needs replacement, it can be easily replaced by simply unscrewing the locking screw from the installation hole, improving the convenience and applicability of the injection molding process.

Description

Technical Field

[0001] This utility model relates to the field of Bluetooth earphone shell injection molding technology, and in particular to a Bluetooth earphone shell injection molding tooling. Background Technology

[0002] With the advancement and development of technology, Bluetooth headsets have gradually become one of the most widely used tools in our daily lives. The shell of a Bluetooth headset can protect its internal components. Most existing Bluetooth headset shells are formed by injection molding using corresponding Bluetooth headset molds.

[0003] A search revealed that the document with publication number "CN216914679U" mentions that "this utility model discloses an injection molding fixture for producing Bluetooth headset shells, relating to the field of Bluetooth headset technology. It includes a base, with a mounting plate fixedly connected to the top of the base via a support frame. An upper mold is mounted on the mounting plate via a connecting mechanism. A convex groove is formed on the base, and a lower mold is placed within the groove. A fixing mechanism is provided on the base, including a fixing plate fixedly connected to the base. A hydraulic rod is fixedly connected to one side of the fixing plate, and a moving block is fixedly connected to the end of the hydraulic rod. The moving block is slidably connected to the bottom wall of the groove. Two clamping components are provided on the base." In use, the fixing mechanism secures the lower mold, preventing it from moving during injection molding and affecting the process. This solves the problem in the prior art where the upper and lower molds easily shift during Bluetooth headset shell injection molding, resulting in a high number of defective products.

[0004] However, an unreasonable gating system design can lead to uneven flow of molten plastic within the mold cavity, which can easily cause defects such as weld lines and bubbles, reducing the appearance quality and yield of the product. Furthermore, a poor cooling water channel layout results in low mold cooling efficiency, which prolongs the injection molding cycle and reduces production efficiency. Uneven cooling can also cause warping and deformation of the headphone shell. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a Bluetooth earphone shell injection molding fixture, which aims to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A Bluetooth earphone shell injection molding fixture includes an injection mold bottom mold, an injection top mold mounted on the upper side of the injection mold bottom mold, a filter injection molding assembly mounted on the inner side of the injection mold bottom mold, the filter injection molding assembly including a mounting groove formed on the inner side of the injection mold bottom mold, an inner mold mounted on the inner side of the mounting groove, a connection port formed on the right side of the injection mold bottom mold, and an injection tube mounted on the right side of the connection port.

[0008] Furthermore, the inner mold and the mounting groove are connected by a slot, the inner mold has mounting holes at both ends, the injection bottom mold has connecting holes at both ends, and the inner side of the connecting hole is threaded with a locking screw.

[0009] Furthermore, two sets of locking screws are provided, and the locking screws are symmetrically arranged about the central axis of the injection mold bottom, and the locking screws pass through the connection hole and the mounting hole.

[0010] Furthermore, a positioning block is provided at the inner bottom of the injection mold, and a positioning groove is provided at the bottom of the inner mold. Two sets of positioning blocks are provided, and the positioning groove and the positioning block are tightly fitted together.

[0011] Furthermore, the positioning block has a hollow internal structure, is made of copper, and has cooling pipes installed inside. Each group of positioning blocks has three cooling pipes installed.

[0012] Furthermore, a feed pipe is installed inside the connection port, and the injection molding pipe is threadedly connected to the connection port.

[0013] Furthermore, an inner filter screen is installed inside the injection-molded tube, and an outer filter screen is provided on the right side of the inner filter screen. Both the outer filter screen and the inner filter screen are made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up the inner mold, connecting holes, and locking screws, and by setting up positioning grooves, the inner mold is initially positioned during installation to prevent it from shifting during placement into the mounting groove. Then, the inner mold is fixed by the locking screws, improving its stability within the injection molding base mold. When the inner mold needs to be replaced, it can be replaced simply by unscrewing the locking screws from the mounting holes, improving the convenience and applicability of injection molding.

[0016] 2. Through the design of the connection port, cooling pipe, and injection pipe, the injection material undergoes dual filtration through the inner and outer filter screens during injection molding to remove large, incompletely melted particles, ensuring the purity of the injection material and improving the molding quality of the product. After injection molding, coolant is injected into the cooling pipes, thereby rapidly cooling the injection mold bottom through the cooling pipes, improving cooling efficiency. At the same time, multiple sets of cooling pipes enhance the cooling surface of the inner mold, ensuring uniform cooling and improving the product yield. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of a Bluetooth earphone shell injection molding tool according to the present invention;

[0019] Figure 2 This is a schematic diagram showing the disassembled structure of the injection bottom mold and injection top mold of this utility model;

[0020] Figure 3 This is a partially disassembled structural diagram of the filter injection molding assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the injection-molded tube of this utility model.

[0022] In the picture:

[0023] 1. Injection mold bottom mold; 2. Injection mold top mold; 3. Filter injection assembly; 301. Mounting groove; 302. Inner mold; 303. Mounting hole; 304. Connecting hole; 305. Locking screw; 306. Positioning block; 307. Positioning groove; 308. Cooling pipe; 309. Connecting port; 310. Feed pipe; 311. Injection pipe; 312. Inner filter screen; 313. Outer filter screen. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 As shown, this utility model provides a technical solution: a Bluetooth earphone shell injection molding fixture, including an injection bottom mold 1, an injection top mold 2 installed on the upper side of the injection bottom mold 1, a filter injection molding assembly 3 installed on the inner side of the injection bottom mold 1, the filter injection molding assembly 3 including an installation groove 301 opened on the inner side of the injection bottom mold 1, an inner mold 302 installed on the inner side of the installation groove 301, a connection port 309 opened on the right side of the injection bottom mold 1, and an injection tube 311 installed on the right side of the connection port 309.

[0026] Two sets of locking screws 305 are provided, symmetrically arranged about the central axis of the injection mold 1. The locking screws 305 pass through the connecting hole 304 and the mounting hole 303 to connect them. The two sets of locking screws 305 improve the fixing effect of the inner mold 302. At the same time, when the inner mold 302 needs to be replaced, the locking screws 305 can be unscrewed from the mounting hole 303 to replace the inner mold 302, which improves the convenience and applicability of injection molding.

[0027] The inner mold 302 and the mounting groove 301 are connected by a slot. The inner mold 302 has mounting holes 303 at both ends. The injection mold 1 has connecting holes 304 at both ends. The inner side of the connecting hole 304 is threaded with a locking screw 305. In use, the inner mold 302 is placed into the mounting groove 301 and the inner mold 302 is fixed by the locking screw 305, which improves the stability of the inner mold 302 in the injection mold 1 and prevents it from shifting during the injection process.

[0028] The positioning block 306 has a hollow internal structure and is made of copper. Cooling pipes 308 are installed inside the positioning block 306, with three cooling pipes 308 installed in each group. After injection molding, coolant is injected into the cooling pipes 308, thereby rapidly cooling the injection mold 1, improving cooling efficiency, shortening the injection molding cycle, and increasing the cooling surface of the inner mold 302 through multiple sets of cooling pipes 308, ensuring uniform cooling, preventing warping and deformation of the earphone shell, and improving the product yield. The connection port 309 has a feed pipe 310 installed inside, and the injection pipe 311 is threadedly connected to the connection port 309. During injection molding, the injection pipe 311 is connected to the connection port 309, improving the convenience of injection molding.

[0029] Continue reading Figure 1-4 As shown, a positioning block 306 is provided on the inner bottom of the injection mold 1, and a positioning groove 307 is provided on the bottom of the inner mold 302. Two sets of positioning blocks 306 are provided, and the positioning groove 307 and the positioning block 306 fit tightly together. In use, the positioning groove 307 at the bottom of the inner mold 302 is aligned with the positioning block 306 in the injection mold 1 and inserted, thereby initially positioning the inner mold 302 and preventing the inner mold 302 from shifting during the process of being placed into the mounting groove 301, thus improving the accuracy of the inner mold 302 being placed into the mounting groove 301.

[0030] Continue reading Figure 1-4As shown, an inner filter screen 312 is installed inside the injection tube 311, and an outer filter screen 313 is provided on the right side of the inner filter screen 312. Both the outer filter screen 313 and the inner filter screen 312 are made of stainless steel. In use, the injection molding material is injected through the injection tube 311. The injection molding material is filtered by both the inner filter screen 312 and the outer filter screen 313 to remove large particles of material that are not completely melted, ensuring the purity of the injection molding material and improving the molding quality of the product.

[0031] Working principle: Move the device to the working position, then, according to the injection molding requirements, place the inner mold 302 into the mounting groove 301, align the positioning groove 307 at the bottom of the inner mold 302 with the positioning block 306 inside the injection mold 1, and engage it to initially position the inner mold 302. Next, insert two sets of locking screws 305 through the connecting hole 304 and connect them to the mounting hole 303 to fix the inner mold 302. Then, install the injection mold 1 and the injection top mold 2 together, and then install the injection tube 311 onto the connecting port 309. Finally, inject the molding material through the injection... The injection tube 311 is used to inject the material. The injection material is filtered twice by the inner filter 312 and the outer filter 313 to remove large particles of material that are not completely melted, ensuring the purity of the injection material. After injection, coolant is injected into the cooling tube 308, which rapidly cools the inner mold 302. At the same time, multiple sets of cooling tubes 308 increase the cooling surface of the inner mold 302 to ensure uniform cooling. After injection, the injection bottom mold 1 and injection top mold 2 are separated, and the molded Bluetooth earphone shell is taken out. This completes the use process of a Bluetooth earphone shell injection molding tool.

[0032] 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 Bluetooth earphone shell injection molding fixture, comprising an injection mold (1), characterized in that: An injection mold (2) is installed on the upper side of the injection mold (1), and a filter injection assembly (3) is installed on the inner side of the injection mold (1). The filter injection assembly (3) includes an installation groove (301) opened on the inner side of the injection mold (1). An inner mold (302) is installed on the inner side of the installation groove (301). A connection port (309) is opened on the right side of the injection mold (1), and an injection tube (311) is installed on the right side of the connection port (309).

2. The Bluetooth earphone shell injection molding fixture according to claim 1, characterized in that, The inner mold (302) and the mounting groove (301) are connected by a slot. The inner mold (302) has mounting holes (303) at both ends. The injection bottom mold (1) has connecting holes (304) at both ends. The inner side of the connecting hole (304) is threaded with a locking screw (305).

3. The Bluetooth earphone shell injection molding fixture according to claim 2, characterized in that, Two sets of locking screws (305) are provided. The locking screws (305) are symmetrically arranged about the central axis of the injection mold (1). The locking screws (305) pass through the connection hole (304) and the mounting hole (303) for connection.

4. The Bluetooth earphone shell injection molding fixture according to claim 1, characterized in that, The bottom inner side of the injection mold (1) is provided with a positioning block (306), and the bottom of the inner mold (302) is provided with a positioning groove (307). There are two sets of positioning blocks (306), and the positioning groove (307) and the positioning block (306) are closely fitted together.

5. The Bluetooth earphone shell injection molding fixture according to claim 4, characterized in that, The positioning block (306) has a hollow structure inside. The positioning block (306) is made of copper. Cooling pipes (308) are installed inside the positioning block (306). Each group of positioning blocks (306) has three cooling pipes (308) installed.

6. The Bluetooth earphone shell injection molding fixture according to claim 1, characterized in that, The feed pipe (310) is installed inside the connection port (309), and the injection pipe (311) is threadedly connected to the connection port (309).

7. The Bluetooth earphone shell injection molding fixture according to claim 1, characterized in that, The injection-molded tube (311) is equipped with an inner filter screen (312), and an outer filter screen (313) is provided on the right side of the inner filter screen (312). Both the outer filter screen (313) and the inner filter screen (312) are made of stainless steel.

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