Manufacturing process of magnetic mobile phone shell made of aramid fiber material

Abstract

The invention relates to the technical field of composite molding, in particular to a manufacturing process of a magnetic mobile phone shell made of an aramid fiber material, which comprises the following steps: taking a first aramid fiber layer, taking at least one layer of glass fiber cloth to form a glass fiber layer, and placing the glass fiber layer on the first aramid fiber layer; a first groove is formed in the glass fiber layer, a magnet is taken, and the magnet is placed in the first groove; and taking a second aramid fiber layer, and placing the second aramid fiber layer on the glass fiber layer. According to the process provided by the invention, the mobile phone shell can be integrally and directly manufactured, the magnet in the mobile phone shell made of the aramid fiber material does not protrude, the side surface of the mobile phone shell is smooth, the yield of products manufactured by the process is effectively improved, the cost is lower, the production efficiency is higher, the manufacturing efficiency is improved, and the whole mobile phone shell is thinner.

Description

Technical Field

[0001] The invention relates to the technical field of composite molding, and in particular to a manufacturing process of a magnetic mobile phone case made of aramid material. Background Art

[0002] Most mobile phone cases in the prior art are made of PC. Since the material is not suitable for secondary care, the magnet has to be placed externally. A small number of mobile phone cases use aramid material as the outer skin. However, in order to avoid burrs and eliminate the influence of the material as much as possible during the secondary treatment, a thicker aramid outer skin has to be provided, generally 0.6 mm, which results in a thicker mobile phone case. In addition, after the magnets are buried and secondary treated in the prior art, the outer side is tortuous and used to wrap the side of the mobile phone, which is not easy to form and is not smooth, resulting in a high defect rate and high cost. In addition, the process of handling defective products affects production efficiency, thereby affecting production progress and failing to meet demand. Summary of the invention

[0003] In order to solve the technical problems existing in the manufacturing process of the existing mobile phone case, the present invention provides a manufacturing process of a magnetic mobile phone case made of aramid material.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a manufacturing process of a magnetic mobile phone case made of aramid material, comprising the following steps:

[0005] Step S1: Take a first aramid layer 1, take at least one layer of glass fiber cloth 21 to form a glass fiber layer 2, and place the glass fiber layer 2 on the first aramid layer 1;

[0006] Step S2: opening a first groove 22 on the glass fiber layer 2, taking a magnet 23, and placing the magnet 23 in the first groove 22;

[0007] Step S3: taking a second aramid layer 3 and placing the second aramid layer 3 on the glass fiber layer 2;

[0008] Step S4: Combine the first aramid layer 1, the glass fiber layer 2 and the second aramid layer 3 with a molding jig, evacuate them, and put them into an autoclave for heating and pressurizing molding. After removing the molding jig, a semi-finished product is formed. The semi-finished product is laser cut to obtain a finished product, which includes the first aramid layer 1 and the glass fiber layer 2 pressed together, the magnet 23 placed in the first groove 22, and the second aramid layer 3.

[0009] Preferably, the molding jig comprises an outer silicone sleeve, an inner silicone sleeve and an aluminum mold core;

[0010] The step S4 specifically includes the following steps:

[0011] Step S41: Take the outer silicone sleeve, inner silicone sleeve, aluminum mold core and autoclave. Wrap the inner silicone sleeve around the aluminum mold core. Place the first aramid layer 1, the fiberglass layer 2 with the magnet 23 placed therein, and the second aramid layer 3 together and then wrap the inner silicone sleeve around them. Wrap the outer silicone sleeve around the fiberglass layer 2 with the magnet 23 and the second aramid layer 3 that are placed together. After vacuum treatment, put them into the autoclave together for heating and pressurizing to form a semi-finished product. After removing the outer silicone sleeve, inner silicone sleeve and aluminum mold core, a semi-finished product is formed.

[0012] Step S42: Perform laser engraving on the semi-finished product to obtain a finished product. The finished product includes the first aramid layer 1, fiberglass layer 2, and the magnet 23 placed in the first groove 22 that are integrally pressed, and also includes the second aramid layer 3.

[0013] Preferably, the thicknesses of both the first aramid layer 1 and the second aramid layer 3 are 0.25 mm.

[0014] Preferably, the thicknesses of both the fiberglass layer 2 and the magnet 23 are 0.5 mm.

[0015] Preferably, in step S4, the working temperature of the hot press is 130 - 150 °C, the pressure is 5 - 80 t, and the hot pressing time is 2 hours.

[0016] Preferably, the texture of the release texture is a woven texture.

[0017] By implementing the above technical solutions, the following technical effects are achieved: The manufacturing process of the magnetic aramid mobile phone case provided by the present invention enables the direct integrated production of the mobile phone case. The magnet in the aramid mobile phone case does not protrude, and the side of the mobile phone case is smooth, effectively improving the yield of the products produced by the process, with lower costs, higher production efficiency, improved manufacturing efficiency, and the overall mobile phone case being thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic flow chart of the manufacturing process of a magnetic aramid mobile phone case provided by the present invention;

[0019] Figure 2 It is an enlarged cross-sectional structure view of a mobile phone case provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To better understand the technical solutions of the present invention, the embodiments provided by the present invention will be described in detail below with reference to the drawings.

[0021] Refer to Figure 1-2 , the first embodiment of the present invention provides a manufacturing process of a magnetic aramid mobile phone case, including the following steps:

[0022] Step S1: Take the second aramid layer 3, take at least one layer of fiberglass cloth 21 to form the fiberglass layer 2, and place the fiberglass layer 2 on the first aramid layer 1;

[0023] Step S2: Open a first groove 22 on the fiberglass layer 2, take a magnet 23, and place the magnet 23 in the first groove 22;

[0024] Step S3: Take the second aramid layer 3 and place the second aramid layer 3 on the fiberglass layer 2;

[0025] Step S4: Combine the first aramid layer 1, the fiberglass layer 2, and the second aramid layer 3 with a molding fixture, perform vacuum treatment, and then put them into a autoclave together for heating and pressing to form a semi-finished product. After removing the molding fixture, the semi-finished product is laser cut to obtain a finished product. The finished product includes the first aramid layer 1, the fiberglass layer 2 pressed together, the magnet 23 placed in the first groove 22, and also includes the second aramid layer 3.

[0026] In this embodiment, the second aramid layer 3, the second aramid layer 3, and the treated fiberglass layer 2 are integrally hot-pressed and formed. First of all, there is no need for secondary shaping, so that the shaping of the side of the mobile phone case can be achieved in one step, greatly increasing the probability of the smoothness of the bottom and side of the mobile phone case, thereby significantly improving the yield rate. On the premise of reducing the manufacturing cost, the time for dealing with defective products is saved, and thus the manufacturing efficiency is improved; in addition, the integrally hot-pressed forming enables the fiberglass layer 2 to perfectly accommodate the magnet 23, and the generated product will not give any feeling of the magnet to the user during use, avoiding affecting the user experience. Moreover, after solving the problem of the magnet affecting the touch feeling, the fiberglass layer 2 does not need to reach the conventional 0.6 mm, and only 0.5 mm is required to complete the strength support, thereby reducing the product thickness and further improving the user experience; furthermore, the integrally formed manufacturing process enables the fiberglass layer 2 to be pre-treated separately. Thus, during the hot-pressing forming, only by placing the materials in sequence can the preparation work be completed, improving the manufacturing efficiency; the molding fixture is used to form a closed space with a specific shape, so that a semi-finished product with the required shape is integrally formed after heating and pressing in the autoclave, and a finished product is obtained through more precise laser cutting, improving the comfort of the touch feeling at the edge of the mobile phone case and improving the user experience.

[0027] Based on the above first embodiments, in other embodiments, further, the molding fixture includes an outer silicone sleeve, an inner silicone sleeve, and an aluminum mold core; the step S4 specifically includes the following steps: Step S41: Take the outer silicone sleeve, the inner silicone sleeve, the aluminum mold core, and a autoclave. Wrap the inner silicone sleeve around the aluminum mold core. Place the first aramid layer 1, the fiberglass layer 2 with the magnet 23 placed thereon, and the second aramid layer 3 together and then wrap the inner silicone sleeve. Wrap the outer silicone sleeve around the fiberglass layer 2 with the magnet 23 and the second aramid layer 3 placed together. After vacuum treatment, put them together into the autoclave for heating and pressurizing to form a semi-finished product. After removing the outer silicone sleeve, the inner silicone sleeve, and the aluminum mold core, a semi-finished product is formed; Step S42: Perform laser engraving on the semi-finished product to obtain a finished product. The finished product includes the first aramid layer 1, the fiberglass layer 2, the magnet 23 placed in the first groove 22, which are press-fitted together, and also includes the second aramid layer 3. The outer silicone sleeve and the inner silicone sleeve are used to form a closed space with a specific shape, and the aluminum mold core is used to provide hardness support, so as to integrally form a semi-finished product after heating and pressurizing in the autoclave, and obtain a finished product through more precise laser engraving, further improving the comfort of the touch feeling at the edge of the mobile phone case and enhancing the user experience.

[0028] Based on the above first embodiments, in other embodiments, further, the thicknesses of both the first aramid layer 1 and the second aramid layer 3 are 0.25 mm, so that while the surface of the mobile phone case has a good touch feeling, the thickness of the mobile phone case reaches the minimum, further enhancing the user experience.

[0029] Based on the above first embodiments, in other embodiments, further, the thicknesses of both the fiberglass layer 2 and the magnet 23 are 0.5 mm, so that the mobile phone case is thin and light on the premise of providing the basic support strength of the mobile phone case. In particular, the magnet 23 can be completely embedded in the fiberglass layer 2, and after covering the second aramid layer 3, the user will not have a touch feeling of the magnet 23, thereby enhancing the smooth feeling when the user uses it and improving the user experience.

[0030] Based on the above first embodiments, in other embodiments, further, in the step S4, the working temperature of the hot press is 130 - 150 °C, the pressure is 5 - 80 t, and the hot pressing time is 2 hours. Then, cooling and shaping are carried out, and a semi-finished product of the product is obtained after cooling.

[0031] Based on the above first embodiments, in other embodiments, further, the pattern of the release texture is a woven texture. It not only ensures the beauty of the product but also effectively improves the use feel of the product.

[0032] The above has introduced in detail a manufacturing process of a magnetic-absorbing mobile phone case made of aramid material provided by the embodiments of the present invention. For those of ordinary skill in the art, according to the idea of the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A manufacturing process for a magnetic suction mobile phone case made of aramid material, characterized in that, It includes the following steps: Step S1: Take the first aramid layer (1), take at least one layer of fiberglass cloth (21) to form a fiberglass layer (2), and place the fiberglass layer (2) on the first aramid layer (1); Step S2: Open a first groove (22) on the fiberglass layer (2), take a magnet (23), and place the magnet (23) in the first groove (22); Step S3: Take the second aramid layer (3) and place the second aramid layer (3) on the fiberglass layer (2); Step S4: Take a forming fixture and a autoclave. Combine the first aramid layer (1), the fiberglass layer (2) and the second aramid layer (3) with the forming fixture, perform vacuum treatment, and then put them into the autoclave together for heating and pressing to form. After removing the forming fixture, a semi-finished product is formed. Laser cut the semi-finished product to obtain a finished product. The finished product includes the first aramid layer (1), the fiberglass layer (2) pressed together, the magnet (23) placed in the first groove (22), and also includes the second aramid layer (3).

2. The manufacturing process of the magnetic-absorbing mobile phone case made of aramid material according to claim 1, characterized in that, The forming fixture includes an outer silicone sleeve, an inner silicone sleeve and an aluminum mold core; Step S4 specifically includes the following steps: Step S41: Take the outer silicone sleeve, the inner silicone sleeve and the aluminum mold core and the autoclave. Wrap the inner silicone sleeve around the aluminum mold core. Place the first aramid layer (1), the fiberglass layer (2) with the magnet (23) placed thereon and the second aramid layer (3) together and then wrap the inner silicone sleeve. Wrap the outer silicone sleeve around the fiberglass layer (2) and the second aramid layer (3) with the magnet (23) placed together, perform vacuum treatment, and then put them into the autoclave together for heating and pressing to form. After removing the outer silicone sleeve, the inner silicone sleeve and the aluminum mold core, a semi-finished product is formed; Step S42: Laser engrave the semi-finished product to obtain a finished product. The finished product includes the first aramid layer (1), the fiberglass layer (2) pressed together, the magnet (23) placed in the first groove (22), and also includes the second aramid layer (3).

3. The manufacturing process of the magnetic mobile phone case made of aramid material according to claim 1, characterized in that, The thickness of both the first aramid layer (1) and the second aramid layer (3) is 0.25 mm.

4. The manufacturing process of the magnetic mobile phone case made of aramid material according to claim 1, wherein, The thickness of both the fiberglass layer (2) and the magnet (23) is 0.5 mm.

5. The manufacturing process of the magnetic attraction mobile phone case made of aramid material according to claim 1, characterized in that, In step S4, the working temperature of the hot press is 130 - 150 °C, the pressure is 5 - 80 t, and the hot pressing time is 2 hours.

6. The manufacturing process of the magnetic attraction mobile phone case made of aramid material according to claim 1, characterized in that, The pattern of the release texture is a woven texture.

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