AR glasses leg injection molding process

Abstract

The invention belongs to the field of glasses processing, and discloses an AR glasses leg injection molding process which comprises the following steps: preparing an insert; preparing a product mold which is divided into a hard rubber forming mold A and a soft rubber forming mold B; hard rubber injection molding is conducted, specifically, the mold A is installed on an injection molding machine table, the insert is positioned, and hard rubber injection molding is conducted on the end of the insert through an injection molding machine to prepare a positioning supporting bone; performing soft rubber primary injection molding, namely mounting the mold B on an injection molding machine table, positioning the insert through the positioning support bone, and performing soft rubber injection molding on one side of the spectacle leg along the length direction by adopting the injection molding machine to prepare a spectacle leg semi-finished product; cutting off the positioning support bone; and carrying out secondary soft rubber injection molding, namely carrying out secondary soft rubber injection molding on the semi-finished spectacle leg product by adopting the injection molding machine to prepare a complete spectacle leg. The method has the advantages that the problem that the appearance is influenced by conventional positioning exposure of the insert is solved, and the appearance integrity of a product is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of eyeglass processing, and more specifically, to an injection molding process for the temples of AR glasses. Background Art

[0002] AR glasses are smart glasses that can integrate virtual information with the real world. They can overlay virtual information on real scenes through display screens or projection technology, allowing users to see the effect of augmented reality. AR glasses need to be worn all the time during use. Currently, the tail of the AR glasses on the market is usually made of hard rubber material. When worn, the hard rubber material has a clamping force on the skin, causing poor user comfort. In order to solve this problem, an adjustable soft rubber material is designed at the tail of the temple.

[0003] In the related technical means, the production process of the soft rubber and metal temples uses a soft metal material or other material embedded in the soft rubber to achieve the support and adjustment functions. In general, the mold design needs to add positioning pins to position the position of the inlay during injection molding to prevent the inlay from deviating from the predetermined position during molding. In this molding method, due to the presence of positioning pins, the temples will have corresponding holes on their appearance after molding, causing the inlay to leak out, affecting the integrity of the product appearance.

[0004] With regard to the above-mentioned related technical means, there are defects such as leakage of embedded parts and incomplete appearance of the product. Summary of the invention

[0005] The embodiment of the present application provides an injection molding process for the temples of AR glasses, which can solve the problem that the conventional positioning of the inlays is exposed and affects the appearance, and ensure the appearance integrity of the product.

[0006] The present application provides an AR glasses temple injection molding process using the following technical solutions:

[0007] An AR glasses temple injection molding process comprises the following steps:

[0008] preparing 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: install mold A on the injection molding machine, position the inlay, and use the injection molding machine to perform hard plastic injection molding on the end of the inlay to form a positioning support bone;

[0011] Soft glue one-time injection molding, installing mold B on the injection molding machine, positioning the inlay by positioning the support bone, and using the injection molding machine to perform soft glue injection molding on one side of the temple along the length direction to form a semi-finished temple;

[0012] Resection of positioning supporting bone;

[0013] Soft glue secondary injection molding, using an injection molding machine to perform a second soft glue injection molding on the semi-finished temples to make complete temples.

[0014] Optionally, in the step of preparing the inlay, the inlay is punched into a desired shape and size by a punch press. During the stamping process, a first positioning hole is punched out at one end of the inlay, and the other end of the inlay is pressed to form an extension portion.

[0015] Optionally, after the step of preparing the inlay, and before the step of hard plastic injection molding, the inlay is deburred.

[0016] Optionally, in the step of hard plastic injection molding, a first positioning hole is formed through a positioning column on the mold A, and the fixed clip clamps the extension part to achieve positioning of the inlay.

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

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

[0019] Optionally, in the step of secondary soft glue injection molding, the semi-finished products of the temples with the positioning support bones removed are connected to form an integrated structure.

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

[0021] Optionally, after the soft glue secondary injection molding step, the mold line on the surface of the temple is smoothed.

[0022] Optionally, the soft rubber material is TPU or TPE, the inlay is a titanium alloy part, and the cross-section of the middle part of the inlay is circular.

[0023] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0024] The two ends of the inlay are hard-glue-injected to form a positioning support bone and a support sleeve, and the mold is used to work together with the positioning holes on the positioning support bone and the support sleeve to achieve the positioning of the built-in inlay, so as to successfully complete the first injection of soft glue on one side of the inlay to form a semi-finished temple; the positioning support bone is subsequently removed to complete the second injection of soft glue to form a finished temple. The temple of the present application can be deformed and bent to shape, and can be adjusted according to different human head sizes to improve wearing comfort, while improving the compatibility of AR glasses. The injection molding process does not require the use of positioning pins to position the inlay, thereby eliminating the external leakage holes formed by the positioning pins, solving the problem of conventional positioning exposure of the inlay affecting the appearance, and ensuring the appearance integrity of the product. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 This is a schematic structural diagram of an AR glasses temple injection molding process highlighting an inlay component disclosed in an embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the structure of an AR glasses temple injection molding process disclosed in an embodiment of the present application, highlighting the support sleeve and the positioning support bone;

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

[0029] Figure 5 This is a schematic structural diagram of an AR glasses temple injection molding process disclosed in an embodiment of the present application, highlighting the finished temple product.

[0030] Description of reference numerals:

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

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The present application embodiment provides an AR glasses temple injection molding process, referring to Figure 1 , including the following steps:

[0034] S1. Prepare inlay 1.

[0035] S1-1, the inlay 1 is punched into the required shape and size by a punch press, and the inlay 1 is made of titanium alloy wire. In order to ensure that the inlay 1 can be bent and shaped in all directions at 360 degrees, the cross section of the middle part of the inlay 1 is circular. Figure 2 During the stamping process, a first positioning hole 2 is formed at one end of the inlay 1, and an extension portion 3 is formed at the other end of the inlay 1. The first positioning hole 2 and the extension portion 3 are used to position the inlay 1 in the future. On the other hand, the positioning hole facilitates the installation and fixation of the finished temple. In this embodiment, one end of the inlay 1 with the positioning hole punched is processed into a flat shape, which is convenient for the production of the positioning hole and increases the contact surface with the hard rubber.

[0036] S1-2, deburring the inlay 1. The inlay 1 can be deburred by mechanical polishing, chemical polishing, electrolytic polishing or the like.

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

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

[0039] S3, hard plastic injection molding, using an injection molding machine to perform hard plastic injection molding on the end of the inlay 1.

[0040] S3-1. Install mold A on the injection molding machine, prepare the hard plastic material, heat the hard plastic material until it is melted and inject it into the storage hopper of the injection molding machine.

[0041] S3-2, positioning the inlay 1. Specifically, the positioning column on the mold A penetrates the first positioning hole 2 to position one end of the inlay 1, and the fixed clip clamps the extension part 3 to position the other end of the inlay 1, so that the inlay 1 is stably located in the mold A to prevent the inlay 1 from deviating from the predetermined position during hard plastic injection molding.

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

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

[0044] S3-5, wait for the mold to be opened, and take the product out of mold A after the mold is opened.

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

[0046] S4, soft plastic injection molding.

[0047] S4-1, install the mold B on the injection molding machine, prepare the soft rubber material, heat the soft rubber material until it is melted and inject it into the storage hopper of the injection molding machine. In this embodiment, the soft rubber material is TPU or TPE.

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

[0049] S4-3, soft glue one-time injection molding, the injection molding machine performs soft glue injection molding on one side of the temple along the length direction to make a semi-finished temple, such as Figure 4 In this embodiment, the soft-glue injection-molded portion does not completely wrap the support sleeve 6 , and the soft-glue injection-molded area completely wraps the inlay 1 .

[0050] S4-4, removing the positioning support bone 4; using a cutter to cut off the positioning support bone 4 along the edge of the semi-finished temple.

[0051] S4-5, soft glue secondary injection molding, the injection molding machine performs a second soft glue injection molding on the other side of the semi-finished temple, and the semi-finished temple with the positioning support bone 4 removed is connected to form an integrated structure to form a complete temple, such as Figure 5 shown.

[0052] S4-6, waiting for the mold to be opened, and taking the product out of mold B after the mold is opened.

[0053] S5. Process the surface of the temples. After two soft-glue injection moldings, a mold line will be generated on the temple surface. The mold line on the temple surface is polished to make it smooth, which enhances the comfort and appearance refinement of the product. In this embodiment, the temple surface treatment uses an alcohol lamp to melt the edge, which is easy to operate and low in cost.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. The same components are represented by the same figure marks. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection molding process for AR glasses temples, characterized in that: The following steps are involved: Preparing a mosaic (1); Prepare product molds, which are divided into hard plastic molding mold A and soft plastic molding mold B; Hard plastic injection molding, installing the mold A on the injection molding machine, positioning the inlay (1), and using the injection molding machine to perform hard plastic injection molding on the end of the inlay (1) to form a positioning support bone (4); Soft glue one-time injection molding, the mold B is installed on the injection molding machine, the inlay (1) is positioned by positioning the support bone (4), and the injection molding machine is used to perform soft glue injection molding on one side of the temple along the length direction to produce a semi-finished temple; Resection of the positioning support bone (4); Soft glue secondary injection molding, using an injection molding machine to perform a second soft glue injection molding on the semi-finished temples to make complete temples.

2. The AR glasses temple injection molding process according to claim 1, characterized in that: In the step of preparing the inlay (1), the inlay (1) is punched into a desired shape and size by a punch press. During the punching process, a first positioning hole (2) is punched out at one end of the inlay (1), and the other end of the inlay (1) is pressed to form an extended portion (3).

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

4. The AR glasses temple injection molding process according to claim 2, characterized in that: In the step of hard plastic injection molding, a first positioning hole (2) is formed through a positioning column on the mold A, and the fixed clip clamps the extension part (3) to realize the positioning of the inlay (1).

5. The AR glasses temple injection molding process 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 AR glasses temple injection molding process according to claim 5, characterized in that: In the step of one-time soft glue injection molding, the soft glue injection-molded part completely wraps the support sleeve (6).

7. The AR glasses temple injection molding process according to claim 6, characterized in that: In the step of secondary soft glue injection molding, the semi-finished products of the temples with the positioning support bones (4) cut out are connected to form an integrated structure.

8. The AR glasses temple injection molding process according to claim 1, characterized in that: In the step of cutting off the positioning support bone (4), the cutting knife cuts off the positioning support bone (4) along the edge of the semi-finished product of the temple.

9. The AR glasses temple injection molding process according to claim 1, characterized in that: After the soft rubber secondary injection molding step, the mold line on the surface of the temple is smoothed.

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

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