Preparation process and product of abnormal sound prevention ear hook of ear clip type earphone

Abstract

The invention relates to the field of earphone processing, and discloses a preparation process of an abnormal sound prevention ear hook of an ear clip type earphone and a product. A preparation process of an abnormal sound prevention ear hook of an ear clip type earphone comprises the following steps: S1, carrying out first injection molding encapsulation and shaping on an assembled earphone wire by using a first silica gel agent to prepare a shaped earphone wire; s2, carrying out injection molding and rubber coating on the shaped earphone wire rod by using a second silica gel agent, and vulcanizing to obtain an ear hook primary product; and S3, the primary ear hook product is subjected to polishing treatment and oil spraying treatment and then vulcanized, and the abnormal sound prevention ear hook is prepared. The abnormal sound prevention ear hook prepared by the preparation process has good flexibility and wear resistance, is applied to an ear clip type earphone, does not generate abnormal sound and unstable tone quality after being bent for multiple times, and has relatively good use stability.

Description

Technical Field

[0001] The present application relates to the field of earphone processing, and more specifically, to a preparation process and product of an anti-noise ear hook for an ear clip-type earphone. Background Art

[0002] With the continuous development of wireless communication technology, Bluetooth headsets are becoming more and more popular. Among them, clip-on Bluetooth headsets are becoming more and more popular among consumers because of their convenience to carry and comfortable wearing. Clip-on earphones are mainly composed of sound cavity, ear hook and earphone cable. The sound cavity is the part that produces sound, the ear hook is the part that is clamped on the ear to fix the clip-on earphone, and the earphone cable is passed through the ear hook to transmit audio signals.

[0003] During the production process of ear clip headphones, the assembled headphone wire needs to be placed in an injection mold for injection molding. However, the assembled headphone wire is not easy to fix its shape in the injection mold and is easy to deform, thereby reducing the yield of the finished product. Therefore, it is necessary to first use quick-drying glue to shape the headphone wire, and then add a layer of UV glue on the surface of the headphone wire and cure it, so that the headphone wire does not deform in the injection mold and maintains a good bending shape.

[0004] However, this processing technology makes all parts of the assembled headphone wire completely fixed. When the ear clip-type headphones need to be bent frequently during wearing, the cured quick-drying glue and UV glue will wrinkle or even break, causing the ear clip-type headphones to make abnormal noises, affecting the sound quality and other performance of the ear clip-type headphones. Summary of the invention

[0005] In order to solve the problem that the ear clip earphones made by the existing preparation process are prone to abnormal noise when they need to be frequently bent during wearing, thereby reducing the sound quality and performance of the ear clip earphones, the present application provides a preparation process and product of an anti-abnormal noise ear hook for an ear clip earphone.

[0006] In a first aspect, the present application provides a process for preparing an anti-noise ear hook for an ear clip-on earphone, using the following technical solution: A preparation process of an anti-noise ear hook for an ear clip type earphone comprises the following steps: S1. Use a first silicone agent to injection-mold and shape the assembled earphone wire to obtain a shaped earphone wire; S2, using a second silicone agent to perform injection molding and vulcanization on the shaped earphone wire to obtain a primary earhook product; S3. The ear hook is polished and sprayed with oil, and then vulcanized to obtain an anti-sound ear hook.

[0007] By adopting the above technical solution, the first silicone agent is firstly used to perform injection molding and gluing on the outer side of the assembled earphone wire and to shape it, so that the outer surface of the earphone wire is covered with a layer of silicone layer. Under the action of the silicone layer, the earphone wire can maintain a bent state while not easily deformed. The silicone layer has good flexibility, thereby enhancing the structural stability of the earphone wire, so that the earphone wire is not easy to break or crack during the bending process; then the second silicone agent is used to perform injection molding and gluing and vulcanization treatment, so that the second silicone agent stably covers and adheres to the surface of the silicone layer formed by the first silicone agent, and the silicone of the earphone wire is A silicone outer layer is formed on the outside of the layer, which improves the durability and anti-fatigue performance of the earphone wire. When bending occurs, the earphone wire is not easily damaged due to the joint buffering effect of the silicone layer and the silicone outer layer. The prepared ear hook will not crack after long-term use, which reduces the problems of abnormal noise and sound quality damage in the ear clip type earphones and improves the use stability of the ear clip type earphones. The prepared ear hook is then polished and sprayed with oil and vulcanized again. Polishing can remove burrs and uneven parts on the surface of the ear hook, and spraying with oil can further improve the flatness of the ear hook, giving the ear hook a smooth feel and wear resistance.

[0008] Preferably, the upper mold temperature of the injection molding in step S1 is 120±5°C, the lower mold temperature is 130±5°C, and the molding pressure is 90±20kg / cm 2 , the setting time is 180±10s.

[0009] By adopting the above technical scheme, the better injection molding parameters and shaping parameters can improve the shaping accuracy and stability of the headphone wire, form a silicone layer on the outer surface of the headphone wire that stably covers the headphone wire, and stably bend and shape the headphone wire.

[0010] Preferably, the injection pressure of the first silicone agent in step S1 is 35-55 kg / cm 2 , injection speed is 20-40%.

[0011] By adopting the above technical solution, the better injection pressure and injection rate can enable the first silicone agent to be stably injected into the mold, thereby improving the injection stability of the first silicone agent and forming a uniform and stable silicone layer on the surface of the earphone wire.

[0012] Preferably, the vulcanization temperature in step S2 is 140±5° C., and the vulcanization time is 120±10 min.

[0013] By adopting the above technical solution, the better second vulcanization conditions can make the second silicone agent fully vulcanized and stably adhere to the surface of the silicone layer formed by the first silicone agent, thereby improving the flexibility and durability of the ear hook, further reducing the abnormal noise problem caused by frequent bending of the ear clip earphones during use, and improving the overall quality of the ear clip earphones.

[0014] Preferably, the vulcanization temperature in step S3 is 140±5° C., and the vulcanization time is 120±10 min.

[0015] By adopting the above technical solution, the better third vulcanization conditions can make the ear hook surface have better flatness and smoothness, thereby improving the overall texture and wear resistance of the ear clip type earphones.

[0016] Preferably, the first silicone agent is liquid silicone or solid silicone, and the second silicone agent is liquid silicone or solid silicone.

[0017] By adopting the above technical solution, the first silicone agent and the second silicone agent in the present application can be either liquid silicone or solid silicone, and the two silicones can be used interchangeably and applied to the process of the present application, which is easy to operate and saves production energy efficiency.

[0018] Preferably, both the first silicone agent and the second silicone agent are two-component liquid silicone agents, and component A of the two-component liquid silicone agent is prepared from the following raw materials in parts by weight: 40-60 parts of vinyl silicone oil, 15-20 parts of fumed silica, 8-12 parts of cross-linking agent, 5-8 parts of stabilizer, 2-4 parts of silane coupling agent, and 0.5-1.5 parts of color glue; component B of the two-component silicone agent is prepared from the following raw materials in parts by weight: 15-20 parts of hydrogenated silicone oil, 2-4 parts of dimethyl silicone oil, 8-12 parts of fumed silica, and 1-2 parts of catalyst.

[0019] By adopting the above technical scheme, the first silicone agent and the second silicone agent of the present application are both two-component liquid silicone agents. The two-component liquid silicone agents have a small shrinkage rate and good fluidity during the curing process. The first silicone agent can be evenly attached to the surface of the headphone wire to form a silicone layer on the surface of the headphone wire to stably shape the headphone wire. The second silicone agent can evenly form a flexible and wear-resistant silicone outer layer on the outer surface of the silicone layer, while improving the flexibility and wear resistance of the ear hook. Under the joint buffering effect of the first silicone agent and the second silicone agent, it has good bending resistance, which can significantly reduce the abnormal noise problem caused by bending activities during long-term use of ear clip headphones.

[0020] Among them, component A is mainly composed of vinyl silicone oil, which provides vinyl for the reaction, and component B is mainly composed of hydrogenated silicone oil, which provides silicon-hydrogen bonds for the reaction. Under the action of the catalyst, a silicon-hydrogen addition reaction is carried out, and the fumed silica can play a role in reinforcing the performance of the first silicone agent and the second silicone agent prepared. The cross-linking agent and the stabilizer can produce a good synergistic effect, further react with the silicone system, and form a network-interwoven macromolecular silicone structure, thereby improving the flexibility and wear resistance of the prepared ear clip, and at the same time can improve the fitting stability of the first silicone agent and the second silicone agent, and reduce the abnormal noise problem caused by bending activities during long-term use of the ear clip type earphones. The silane coupling agent can play a synergistic role with the cross-linking agent and the stabilizer, improve the dispersion performance of the fumed silica in the silicone system, and further improve the wear resistance and flexibility of the ear clip type earphones.

[0021] Preferably, the crosslinking agent is composed of triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester in a weight ratio of 1:1:(1-3).

[0022] By adopting the above technical scheme, triallyl isocyanurate is a multifunctional olefin monomer containing a triazine ring, which can produce a good synergistic effect with diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester, and further undergo a cross-linking reaction with the silicone system; diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester both have long-chain ether structures and active groups, which can cooperate with triallyl isocyanurate and the silicone system to be uniformly interwoven to form a macromolecular network interwoven structure, thereby improving the flexibility and wear resistance of the first silicone agent and the second silicone agent, thereby improving the sound quality damage and abnormal sound problems caused by the inability to withstand bending during long-term use of ear clip headphones.

[0023] Preferably, the stabilizer is composed of trimethylolpropane diallyl ether and 2-octenyl succinic anhydride in a weight ratio of (1-2):1.

[0024] By adopting the above technical solution and using trimethylolpropane diallyl ether and 2-octenyl succinic anhydride in a preferred weight ratio as stabilizers, the reaction stability of the silicone system can be further improved, thereby forming a more stable cross-linked structure of the system, thereby improving the bending resistance of the ear clip headphones during repeated bending, thereby improving the abnormal sound problem.

[0025] Preferably, the catalyst is a platinum catalyst.

[0026] By adopting the above technical solution, the use of platinum catalyst can effectively improve the chemical reaction efficiency and stability of the two-component silicone agent during the injection molding and vulcanization process.

[0027] In a second aspect, the present application provides an anti-noise ear hook, which adopts the following technical solution: An anti-abnormal noise ear hook is made by the above-mentioned preparation process.

[0028] By adopting the above technical scheme, the anti-abnormal noise ear hook prepared in the present application has good bending resistance and wear resistance, and is applied to ear clip-type headphones. During use, it is not easy to crack due to frequent bending, can maintain good sound quality and usage stability, and will not have abnormal noise problems.

[0029] In summary, this application has the following beneficial effects: 1. The preparation process of the anti-abnormal noise ear hook of the ear clip type earphone of the present application is as follows: first, a first silicone agent is injection molded and coated on the outer surface of the assembled earphone wire and a layer of the first silicone agent is formed; then, a second silicone agent is injection molded and coated on the outer surface of the first silicone agent and vulcanized; then, the first silicone agent and the second silicone agent are polished and oil-sprayed and vulcanized for the third time; the first silicone agent and the second silicone agent have good fitting stability; under the joint buffering effect of the first silicone agent and the second silicone agent, the earphone wire is not easily damaged; the prepared ear hook will not crack during long-term use; the problems of abnormal noise and sound quality damage in the ear clip type earphone are reduced; and the use stability of the ear clip type earphone is improved.

[0030] 2. By using triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester in an optimal dosage ratio as cross-linking agents, a better synergistic effect is produced, and a cross-linking reaction is carried out with the silicone system to form a macromolecular network interwoven structure, thereby improving the fitting stability, flexibility and wear resistance of the first silicone agent and the second silicone agent, thereby improving the sound quality damage and abnormal sound problems caused by the inability to withstand bending during long-term use of ear clip headphones.

[0031] 3. By using trimethylolpropane diallyl ether and 2-octenyl succinic anhydride as stabilizers in a preferred weight ratio, the reaction stability of the silicone system can be further improved, thereby forming a more stable cross-linked structure of the system, thereby improving the bending resistance of the ear clip headphones during repeated bending, thereby reducing the problem of abnormal noise.

[0032] 4. The anti-noise ear hook prepared in the present application has good bending resistance and wear resistance, and is applied to ear clip-type headphones. During use, it is not easy to crack due to frequent bending activities, can maintain good sound quality and usage stability, and will not cause abnormal noise problems. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with embodiments.

[0034] The following are the sources and specifications of some raw materials of this application. The raw materials used in the preparation examples and embodiments of this application can be obtained from the market, including but not limited to the raw materials of the following models and manufacturers. Raw materials with equivalent performance can be used: 1. Vinyl silicone oil: vinyl content 1-1.3%, viscosity (cps, 25℃): 1000-2000; 2. Methyl hydrogen silicone oil: hydrogen content 1.4-1.6%, viscosity 20-60mm 2 / s; 3. Fumed silica: Cabot silica CAB-O-SIL M5; 4. Triallyl isocyanurate: purity 99%, CAS No. 1025-15-6; 5. Cyclohexane-1,2-dicarboxylic acid diglycidyl ester: content 98%, CAS number 5493-45-8; 6. Trimethylolpropane diallyl ether: CAS No. 682-09-7, content 99%; 7. 2-Octenylsuccinic anhydride: CAS No. 26680-54-6, content 99%; 8. Platinum catalyst: platinum content 15000-20000ppm.

[0035] Preparation example of the first silicone agent and the second silicone agent Preparation Example 1 Preparation Example 1 discloses a first silicone agent and a second silicone agent, both of which are two-component liquid silicone agents, and the two-component liquid silicone agents are prepared by the following steps: Component A: Add 4kg vinyl silicone oil, 1.2kg crosslinking agent (composed of 0.8kg allyl glycidyl ether and 0.4kg triallyl isocyanurate), 0.5kg trimethylolpropane diallyl ether as a stabilizer, 0.2kg vinyl trimethoxysilane as a silane coupling agent, 1.5kg fumed silica and 0.05kg color glue into a mixer, mix at 15°C for 1h, mix evenly and store; the color glue is a commercially available special color glue for silica gel, and the model is not limited; Component B: Add 1.5kg hydrogenated silicone oil, 0.2kg dimethyl silicone oil, 0.8kg fumed silica and 0.1kg platinum catalyst into a mixer, mix at 15°C for 30 minutes, mix well and store; Preparation Example 2-3 The difference between Preparation Example 2-3 and Preparation Example 1 is that the amount of raw materials used and the preparation conditions are different, see Table 1 below for details.

[0036] Table 1 Raw material dosage and preparation conditions of Preparation Examples 1-3 Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 1 is that the type of cross-linking agent is different. The cross-linking agent in Preparation Example 4 is composed of triallyl isocyanurate and diethylene glycol divinyl ether. The amount of triallyl isocyanurate is 0.8 kg, and the amount of diethylene glycol divinyl ether is 0.4 kg. The rest is the same as Preparation Example 1.

[0037] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 1 is that the types of cross-linking agents are different. The cross-linking agent in Preparation Example 5 is composed of triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester. The amount of triallyl isocyanurate is 0.4 kg, the amount of diethylene glycol divinyl ether is 0.4 kg, and the amount of cyclohexane-1,2-dicarboxylic acid diglycidyl ester is 0.4 kg. The rest is the same as Preparation Example 1.

[0038] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 1 is that the cross-linking agent consists of triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester, the amount of triallyl isocyanurate is 0.24 kg, the amount of diethylene glycol divinyl ether is 0.24 kg, the amount of cyclohexane-1,2-dicarboxylic acid diglycidyl ester is 0.72 kg, and the rest is the same as Preparation Example 1.

[0039] Preparation Example 7 The difference between Preparation Example 7 and Preparation Example 6 is that the stabilizer consists of trimethylolpropane diallyl ether and 2-octenyl succinic anhydride, the amount of trimethylolpropane diallyl ether used is 0.25 kg, the amount of 2-octenyl succinic anhydride used is 0.25 kg, and the rest is the same as Preparation Example 6.

[0040] Preparation Example 8 The difference between Preparation Example 8 and Preparation Example 6 is that the stabilizer consists of trimethylolpropane diallyl ether and 2-octenyl succinic anhydride, the amount of trimethylolpropane diallyl ether used is 0.33 kg, the amount of 2-octenyl succinic anhydride used is 0.17 kg, and the rest is the same as Preparation Example 6. Example

[0041] Example 1 Embodiment 1 discloses a process for preparing an anti-noise ear hook of an ear hook type headset, comprising the following steps: S1. Place the assembled earphone wires one by one on a fixture with 4 earphone wire clamping positions, then place the fixture in the injection mold of the injection molding machine, adjust the parameters of the injection molding machine, control the upper mold temperature of the injection molding machine to 115°C, the lower mold temperature to 125°C, use the commercially available first silicone agent for liquid injection molding, and control the injection pressure of the first silicone agent to 35kg / cm 2 The injection speed is 40%, the injection volume is 15g, and the molding is performed after injection molding. The molding pressure is controlled to be 70kg / cm 2 The shaping time is 170s. After shaping is completed, the mold is opened to obtain the shaped headphone wire. S2. Clamp the shaped earphone wire obtained in step S1 on a fixture, place it in an injection mold of an injection molding machine, control the injection temperature of the injection mold of the injection molding machine to be 135°C, use a commercially available second silicone agent for liquid injection molding, and control the injection pressure of the second silicone agent to be 35kg / cm 2 , the injection speed is 40%, the injection volume is 60g, and the vulcanization is performed at the injection temperature for 110 minutes. After the vulcanization is completed, the mold is opened to obtain the initial ear hook product; S3. The outer ring and the inner ring of the ear hook are polished three times with 1200-grit sandpaper respectively, and then sprayed with hand oil. After spraying, the ear hook is placed in an oven at a temperature of 135° C. for further vulcanization for 110 minutes to obtain an anti-sound ear hook; The first silicone agent and the second silicone agent in this embodiment are both commercially available two-component addition-type liquid silicone rubber of Xin'an Tianyu silicone, model TYL-6420-60AB, and the use ratio of component A to component B is 1:1; When the first silicone agent and / or the second silicone agent is solid silicone, a molding vulcanizing machine may be used to vulcanize and encapsulate the earphone wire. The use of the molding vulcanizing machine is a commonly used vulcanization method in the art and will not be described in detail here. The injection molding machine used in this embodiment is an 85T injection molding machine. The hand-feeling oil used in the oil injection process in this embodiment is commercially available Koshivi SH-05. Actual production includes but is not limited to hand-feeling oil of this manufacturer and model.

[0042] Embodiment 2-4 The difference between Example 2-4 and Example 1 is that the first silicone agent and the second silicone agent have different sources and different parameter conditions of the preparation process, see Table 2 below for details.

[0043] Table 2 Parameters of Examples 2-4 Embodiment 5-9 The difference between Example 5-9 and Example 1 is that the sources of the first silicone agent and the second silicone agent are different, see Table 3 below for details.

[0044] Table 3 Sources of the first silica gel agent and the second silica gel agent of Examples 5-9 Example The source of the first silicone agent Source of the second silicone agent Example 5 Preparation Example 4 Preparation Example 4 Example 6 Preparation Example 5 Preparation Example 5 Example 7 Preparation Example 6 Preparation Example 6 Example 8 Preparation Example 7 Preparation Example 7 Example 9 Preparation Example 8 Preparation Example 8 Comparative Example Comparative Example 1 The difference between the comparative example and Example 1 is that step S1 is not performed, and the assembled earphone wire is directly injection molded and vulcanized using the second silicone agent. The injection amount of the second silicone agent is 55g, and the rest is the same as Example 1.

[0045] Performance testing The anti-noise ear hooks prepared in Examples 1-9 and Comparative Example 1 were tested as follows: 1. Elongation at break test: Referring to the test method in GB / T528-2009, the elongation at break of the anti-squeak ear hook was tested (unit: %), and the test results were recorded.

[0046] 2. Wear resistance test: Use a wear tester with a load of 500g, wipe standard artificial sweat with cotton cloth, adjust the test speed to 60r / min, and record the number of frictions when wear marks appear; 3. Abnormal sound test of ear clip headphones Assemble the prepared anti-noise ear hook and other accessories to prepare an ear clip earphone, bend the anti-noise ear hook of the ear clip earphone to 30°, and fold it 1000 times, use an audio analyzer to send standard audio (1KHz) to detect the signal-to-noise ratio (unit: dB) of the ear clip earphone, the larger the signal-to-noise ratio, the smaller the noise, and the better the sound quality, and test and record the test results; The following are the performance test data of the anti-noise ear hooks of Examples 1-9 and Comparative Example 1, see Table 4 below for details.

[0047] Table 4 Data table of Examples 1-9 and Comparative Example 1 Combining Example 1 with Example 2-9 and Table 4, it can be concluded that the anti-noise ear hook prepared by using the two-component liquid silicone agent of the present application as the first silicone agent and the second silicone agent has good flexibility and wear resistance, and the prepared ear clip-type earphone has good bending resistance, good sound quality, and no abnormal noise problem. Compared with Example 1, Example 2-4 uses the first silicone agent and the second silicone agent of the present application to increase the elongation at break of the anti-noise ear hook by 50%, increase the number of wear times by 125 times, and increase the signal-to-noise ratio by 15dB.

[0048] Furthermore, in Example 5-7, compared with Example 2, in Example 5, triallyl isocyanurate and diethylene glycol divinyl ether are used as cross-linking agents. Compared with Example 2, the elongation at break of the anti-noise ear hook is increased by 15%, the number of wear times is increased by 25 times, and the signal-to-noise ratio is increased by 3dB; while in Examples 6-7, triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester with a better dosage ratio are used as cross-linking agents. Compared with Example 2, the elongation at break of the anti-noise earhook is increased by 62%, the wear times are increased by 132 times, and the signal-to-noise ratio is increased by 21dB; it can be seen that a better dosage ratio of triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester is used as a cross-linking agent, and the first silicone agent and the second silicone agent prepared have significantly improved the flexibility and wear resistance of the anti-noise earhook of the present application, thereby improving the anti-noise performance of the prepared ear-clip earphones.

[0049] Compared with Example 7, Examples 8-9 further optimize the proportion of the stabilizer, and the elongation at break of the anti-noise ear hook obtained is increased by 26%, the wear resistance is increased by 53 times, and the signal-to-noise ratio is increased by 10dB.

[0050] Compared with Comparative Example 1, Example 1 changes the preparation process of the anti-abnormal noise ear clip, and the elongation at break of the anti-abnormal noise ear clip is reduced by 20%. Although the reduction is not much, the signal-to-noise ratio is significantly reduced by 34 dB. It can be seen that the use of the two-time injection molding and encapsulation preparation process of the present application in combination with the first silicone agent and the second silicone agent of the present application can significantly improve the flexibility and wear resistance of the anti-abnormal noise ear clip, solve the abnormal noise problem of ear clip headphones, and improve the sound quality and use stability of ear clip headphones.

[0051] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed. However, as long as it is within the scope of the claims of the present application, it shall be protected by the patent law.

Claims

1. A preparation process for an anti-noise ear hook for an ear clip-on earphone, characterized in that: The following steps are involved: S1. Use a first silicone agent to perform injection molding on the assembled earphone wire and shape it to obtain a shaped earphone wire; S2, using a second silicone agent to perform injection molding and vulcanization on the shaped earphone wire to obtain a primary earhook product; S3. The ear hook is polished and sprayed with oil, and then vulcanized to obtain an anti-sound ear hook.

2. The process for preparing the anti-noise ear hook of the ear clip type earphone according to claim 1, characterized in that: The upper mold temperature of the injection molding in step S1 is 120±5°C, the lower mold temperature is 130±5°C, and the molding pressure is 90±20 kg / cm 2 , the setting time is 180±10s.

3. The process for preparing the anti-noise ear hook of the ear clip type earphone according to claim 1, characterized in that: The injection pressure of the first silicone agent in step S1 is 35-55 kg / cm 2 , the injection speed is 20-40%.

4. The process for preparing the anti-noise ear hook of the ear clip type earphone according to claim 1, characterized in that: The vulcanization temperature in the step S2 is 140±5° C., and the vulcanization time is 120±10 min.

5. The process for preparing the anti-noise ear hook of the ear clip type earphone according to claim 1, characterized in that: The vulcanization temperature in the step S3 is 140±5° C., and the vulcanization time is 120±10 min.

6. A process for preparing an anti-noise ear hook for an ear clip type earphone according to any one of claims 1 to 5, characterized in that: The first silicone agent is liquid silicone or solid silicone, and the second silicone agent is liquid silicone or solid silicone.

7. The process for preparing the anti-noise ear hook of the ear clip type earphone according to claim 6, characterized in that: The first silicone agent and the second silicone agent are both two-component liquid silicone agents, and component A of the two-component liquid silicone agent is prepared from the following raw materials in parts by weight: 40-60 parts of vinyl silicone oil, 15-20 parts of fumed silica, 8-12 parts of a crosslinking agent, 5-8 parts of a stabilizer, 2-4 parts of a silane coupling agent, and 0.5-1.5 parts of a color glue; component B of the two-component silicone agent is prepared from the following raw materials in parts by weight: 15-20 parts of hydrogenated silicone oil, 2-4 parts of dimethyl silicone oil, 8-12 parts of fumed silica, and 1-2 parts of a catalyst.

8. The process for preparing the anti-noise ear hook of the ear clip type earphone according to claim 7, characterized in that: The crosslinking agent consists of triallyl isocyanurate, diethylene glycol divinyl ether and cyclohexane-1,2-dicarboxylic acid diglycidyl ester in a weight ratio of 1:1:(1-3).

9. The process for preventing abnormal noise of an ear clip type earphone according to claim 7, characterized in that: The stabilizer consists of trimethylolpropane diallyl ether and 2-octenyl succinic anhydride in a weight ratio of (1-2):

1.

10. An anti-noise ear hook, characterized in that: The invention is prepared by the preparation process according to any one of claims 1 to 9.

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