AR glasses temple injection molding process

Abstract

The application belongs to the field of glasses processing, and discloses an AR glasses leg injection molding process, which comprises the following steps: preparing an inlay; preparing a product mold, which is divided into a hard glue forming mold A and a soft glue forming mold B; hard glue injection molding, installing the mold A on an injection molding machine, positioning the inlay, and using the injection molding machine to perform hard glue injection molding on the end of the inlay to form a positioning support bone; soft glue one-time injection molding, installing the mold B on the injection molding machine, positioning the inlay through the positioning support bone, and using the injection molding machine to perform soft glue injection molding on one side of the glasses leg along the length direction to form a glasses leg semi-finished product; cutting off the positioning support bone; soft glue secondary injection molding, using the injection molding machine to perform second soft glue injection molding on the glasses leg semi-finished product to form a complete glasses leg. The application has the effect of solving the problem that the conventional positioning of the inlay affects the appearance and ensuring the integrity of the appearance of the product.

Description

Technical Field

[0001] This application relates to the field of eyeglasses processing, and more specifically, to an injection molding process for AR eyeglass temples. Background Technology

[0002] AR glasses are smart glasses that integrate virtual information with the real world. They use displays or projection technology to overlay virtual information onto real-world scenes, allowing users to experience augmented reality effects. AR glasses need to be worn continuously. Currently, the temples of most AR glasses on the market are made of hard plastic, which can cause discomfort due to the gripping force between the hard plastic and the skin. To address this issue, adjustable soft plastic material is designed at the temples.

[0003] In related technical methods, the temples of glasses that combine soft rubber and metal are manufactured by embedding a relatively soft metal or other material inside the soft rubber to achieve support and adjustment. Generally, the mold design requires locating pins to position the inserts during injection molding to prevent them from deviating from their intended position during molding. This molding method, due to the presence of the locating pins, results in holes on the temple's exterior after molding, causing the inserts to be exposed and affecting the integrity of the product's appearance.

[0004] The aforementioned technical methods have the drawback of exposed inserts and incomplete product appearance. Summary of the Invention

[0005] This application provides an injection molding process for AR glasses temples, which can solve the problem of exposed mounting parts affecting the appearance and ensure the integrity of the product's appearance.

[0006] The injection molding process for AR glasses temples provided in this application adopts the following technical solution:

[0007] An injection molding process for AR glasses temples includes the following steps:

[0008] Fabrication of inlays;

[0009] Prepare product molds, which are divided into hard plastic molding mold A and soft plastic molding mold B;

[0010] Hard plastic injection molding: Mold A is installed on the injection molding machine table to position the insert. The end of the insert is then injection molded with hard plastic to form a positioning support bone.

[0011] The soft rubber is injected in one step. Mold B is installed on the injection molding machine table. The inlay is positioned by the positioning support bone. The soft rubber is injected into one side of the temple along the length direction by the injection molding machine to make the temple semi-finished product.

[0012] Resection of the supporting bone;

[0013] Secondary injection molding of soft rubber involves using an injection molding machine to perform a second injection molding of the semi-finished temples to create complete temples.

[0014] Optionally, in the step of preparing the insert, the insert is stamped by a punch press to form the required shape and size. During the stamping process, a first positioning hole is punched and milled at one end of the insert, and the other end of the insert is pressed to form an extension.

[0015] Optionally, the insert may be deburred after the step of preparing the insert and before the step of hard plastic injection molding.

[0016] Optionally, in the hard plastic injection molding step, the first positioning hole is made through the positioning pin on mold A, and the clamping piece is used to clamp the extension to achieve the positioning of the insert.

[0017] Optionally, during the rigid injection molding step, the injection molding machine simultaneously performs rigid injection molding on the other end of the insert to form a support sleeve.

[0018] Optionally, in the one-time injection molding step of the soft rubber, the injection-molded part completely covers the support sleeve.

[0019] Optionally, in the secondary injection molding step of soft rubber, the semi-finished temples with the cut and positioned supporting bone are connected to form an integral structure.

[0020] Optionally, in the step of removing the positioning support bone, the cutting tool cuts the positioning support bone along the edge of the semi-finished temple.

[0021] Optionally, after the secondary injection molding of soft rubber, the parting line on the temple surface is smoothed.

[0022] Optionally, the soft rubber material can be TPU or TPE, and the insert can be made of titanium alloy with a circular cross-section in the middle.

[0023] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0024] Hard plastic injection molding is performed on both ends of the inlay to form a positioning support bone and a support sleeve. The positioning holes on the positioning support bone and support sleeve, assisted by a mold, are used to position the internal inlay, thus smoothly completing the first injection molding of soft plastic on one side of the inlay, forming a semi-finished temple. Subsequently, the positioning support bone is removed to complete the second injection molding of soft plastic, forming the finished temple. The temple of this application can deform and bend to maintain its shape, adjusting to different head sizes to improve wearing comfort and enhance the compatibility of AR glasses. Its injection molding process eliminates the need for positioning pins to position the inlay, thus eliminating exposed holes formed by positioning pins and solving the problem of exposed positioning pins affecting the appearance, ensuring the integrity of the product's appearance. Attached Figure Description

[0025] Figure 1 This is a flowchart of an injection molding process for the temples of AR glasses disclosed in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram illustrating the structure of the inlay component in the injection molding process of AR glasses temples disclosed in an embodiment of this application.

[0027] Figure 3 This is a schematic diagram illustrating the structure of the support sleeve and positioning support bone in the injection molding process of AR glasses temples disclosed in this application.

[0028] Figure 4 This is a schematic diagram showing the structure of a semi-finished AR glasses temple injection molding process disclosed in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram illustrating the structure of the finished AR glasses temple, as disclosed in an embodiment of this application, using an injection molding process.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Inlay; 2. First positioning hole; 3. Extension; 4. Positioning support bone; 5. Second positioning hole; 6. Support sleeve. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application provides an injection molding process for AR glasses temples, referring to... Figure 1 This includes the following steps:

[0034] S1. Prepare the inlay 1.

[0035] S1-1, Insert 1 is stamped into the required shape and size using a punch press. Insert 1 is made of titanium alloy wire. To ensure that insert 1 can be bent and shaped in all 360° directions, the cross-section of the middle part of insert 1 is circular. (Refer to...) Figure 2 During the stamping process, a first positioning hole 2 is formed at one end of the insert 1, and an extension portion 3 is formed at the other end of the insert 1. The first positioning hole 2 and the extension portion 3 cooperate to position the insert 1 subsequently. On the other hand, the positioning hole facilitates the subsequent installation and fixation of the finished temple. In this embodiment, one end of the insert 1 with the milled positioning hole is processed into a flat shape, which facilitates the production of the positioning hole and increases the contact surface with the hard plastic.

[0036] S1-2. Deburring of insert 1. Deburring of insert 1 can be performed by mechanical polishing, chemical polishing, electrolytic polishing, or other methods.

[0037] S2. Prepare the product mold. In this embodiment, the product mold includes mold A for hard plastic injection molding of both ends of the insert 1 and mold B for soft plastic injection molding of the insert 1. Mold A has a positioning post for engaging with the first positioning hole 2 and a fixing clip for clamping the extension 3. Mold B has a first positioning post for engaging with the first positioning hole 2 and a second positioning post for engaging with the second positioning hole 5 on the positioning support bone 4.

[0038] In other embodiments, steps S1 and S2 may be performed simultaneously, or step S2 may be performed before step S1.

[0039] S3, Hard plastic injection molding: Hard plastic injection molding is performed on the end of insert 1 using an injection molding machine.

[0040] S3-1. Install mold A on the injection molding machine platform, prepare hard plastic material, heat the hard plastic material to a molten state and inject it into the injection molding machine storage hopper.

[0041] S3-2, Positioning insert 1. Specifically, the positioning pin on mold A passes through the first positioning hole 2 to position one end of the insert 1, and the fixing clip holds the extension part 3 to position the other end of the insert 1, so that the insert 1 is stably located in mold A, preventing the insert 1 from deviating from the predetermined position during hard plastic injection molding.

[0042] S3-3, Construct positioning support bone 4, such as Figure 3 As shown. The injection molding machine injects the hard material from the hopper into mold A, and performs injection molding on one end of the insert 1. The positioning support bone 4 facilitates the positioning of the insert 1 during subsequent soft plastic injection molding. In this embodiment, the positioning support bone 4 is located at the position of the extension 3 and covers the extension 3, and the positioning support bone 4 has a second positioning hole 5.

[0043] S3-4, Make support sleeve 6, such as Figure 3 As shown, the injection molding machine injection molds the other end of the insert 1. The support sleeve 6 is located at the position of the first positioning hole 2, and the support sleeve 6 wraps around one end of the insert 1 and avoids the position of the first positioning hole 2. The shaping sleeve shapes and supports one end of the insert 1 on the one hand, and enhances the toughness when the temple is connected to the frame on the other hand.

[0044] S3-5. Wait for the mold to open. After the mold is opened, remove the product from mold A.

[0045] In this embodiment, steps S3-3 and S3-4 are performed simultaneously. In other embodiments, step S3-4 may be performed before step S3-3.

[0046] S4, soft rubber injection molding.

[0047] S4-1. Install mold B on the injection molding machine platform, prepare the soft rubber material, heat the soft rubber material to a molten state, and inject it into the injection molding machine's hopper. In this embodiment, the soft rubber material is TPU or TPE.

[0048] S4-2, Positioning insert 1. Specifically, the first positioning post in mold B passes through the first positioning hole 2 to position one end of the insert 1, and the second positioning post passes through the second positioning hole 5 on the positioning support bone 4 to position the other end of the insert 1, so that the insert 1 is stably located in mold B, preventing the insert 1 from deviating from the predetermined position during the one-time injection molding of soft rubber.

[0049] S4-3. Soft rubber injection molding: The injection molding machine injection molds soft rubber on one side of the temple along its length to produce a semi-finished temple product, such as... Figure 4 As shown. In this embodiment, the soft rubber injection molded part does not completely cover the support sleeve 6, and the area of ​​the soft rubber injection molded part completely covers the insert 1.

[0050] S4-4, Remove the positioning support bone 4; Use a cutting tool to cut the positioning support bone 4 along the edge of the semi-finished temple.

[0051] S4-5. Secondary injection molding with soft rubber: The injection molding machine performs a second soft rubber injection molding on the other side of the semi-finished temple, connecting the semi-finished temple with the removed positioning support bone 4 to form an integral structure, creating a complete temple. Figure 5 As shown.

[0052] S4-6. Wait for the mold to open. After the mold opens, remove the product from mold B.

[0053] S5. Treat the surface of the temples. After two rounds of soft rubber injection molding, parting lines will be formed on the surface of the temples. Polishing the parting lines on the temples makes them smooth, enhancing the comfort of use and the refinement of the appearance of the product. In this embodiment, the surface treatment of the temples uses an alcohol lamp to melt the edges, which is convenient and low in cost.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. The same components are indicated by the same reference numerals. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A process for injection molding AR glasses temples, characterized in that, Includes the following steps: Preparation of the inlay (1); Prepare product molds, which are divided into hard plastic molding mold A and soft plastic molding mold B; Hard plastic injection molding: Mold A is installed on the injection molding machine table to position the insert (1). The end of the insert (1) is made into a positioning support bone (4) by hard plastic injection molding using the injection molding machine. The soft rubber is injected in one step. The mold B is installed on the injection molding machine table. The inlay (1) is positioned by the positioning support bone (4). The soft rubber is injected into one side of the temple along the length direction by the injection molding machine to make the temple semi-finished product. Resection of the supporting bone (4); The soft rubber is injected twice. The injection molding machine performs a second soft rubber injection molding on the other side of the temple semi-finished product. The temple semi-finished products with the cut positioning support bone (4) are connected to form an integrated structure and a complete temple.

2. The injection molding process for AR glasses temples according to claim 1, characterized in that, In the step of preparing the insert (1), the insert (1) is stamped by a punch press to form the required shape and size. During the stamping process, the first positioning hole (2) is punched out at one end of the insert (1), and the extension part (3) is formed by pressing the other end of the insert (1).

3. The injection molding process for AR glasses temples according to claim 2, characterized in that, After the step of preparing the insert (1) and before the hard plastic injection molding step, the insert (1) is deburred.

4. The injection molding process for AR glasses temples according to claim 2, characterized in that, In the hard plastic injection molding process, the first positioning hole (2) is made through the positioning pin on mold A, and the clamping of the extension part (3) by the fixing clip is used to position the insert (1).

5. The injection molding process for AR glasses temples according to claim 1, characterized in that, In the hard plastic injection molding step, the injection molding machine simultaneously performs hard plastic injection molding on the other end of the insert (1) to form a support sleeve (6).

6. The injection molding process for AR glasses temples according to claim 5, characterized in that, In the one-time injection molding process of soft rubber, the soft rubber injection molded part completely covers the support sleeve (6).

7. The injection molding process for AR glasses temples according to claim 6, characterized in that, In the second injection molding step of soft rubber, the semi-finished temples with the cut positioning support bone (4) are connected to form an integral structure.

8. The injection molding process for AR glasses temples according to claim 1, characterized in that, In the step of removing the positioning support bone (4), the cutter cuts the positioning support bone (4) along the edge of the semi-finished temple.

9. The injection molding process for AR glasses temples according to claim 1, characterized in that, After the second injection molding of soft rubber, the parting line on the surface of the temple is smoothed.

10. The injection molding process for AR glasses temples according to claim 1, characterized in that, The soft rubber material is TPU or TPE, the insert (1) is a titanium alloy part and the cross-section of the middle part of the insert (1) is circular.

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