Preparation process and product of ear clip type earphone wire tube

Abstract

The invention relates to the field of earphone accessory processing, and discloses a preparation process of an ear clip type earphone wire tube and a product. A preparation process of an ear clip type earphone wire tube comprises the following preparation steps: S1, bending a support wire into an arc shape, and carrying out injection molding on two ends of the support wire to form fixed ends with mounting holes; S2, coating a release agent on a false wire, drying the false wire, and enabling two ends of the false wire to penetrate through the mounting holes of the two fixed ends respectively, so as to obtain the ear clip type earphone wire tube; the false line is correspondingly arranged on one side of the supporting line and is arc-shaped, and the false line and the supporting line are arranged at intervals; s3, carrying out first injection molding on the supporting line, the false line and a part of the fixed end head area to form a half-side line pipe; s4, carrying out secondary injection molding on the supporting line, the false line and a part of the fixed end area to form another half line pipe; s5, the false wire is pulled away, and a through wire passing hole is formed; and S6, arranging the earphone wire in the wire passing hole in a penetrating manner. The ear clip type earphone cable tube prepared by the invention has relatively good buffering and protecting effects on an earphone cable, and is not easy to crack and damage when being bent.

Description

Technical Field

[0001] The present application relates to the field of earphone accessories processing, and more specifically, to a preparation process and product of an ear clip type earphone wire tube. Background Art

[0002] Ear clip Bluetooth headsets are becoming more and more popular among consumers due to their convenience in carrying and comfort in wearing. Ear clip headsets are composed of sound cavity, earphone wire tube and earphone wire. The earphone wire is wrapped in the earphone wire tube, which plays the role of connecting the circuit and receiving signals. The earphone wire tube needs to have good flexibility, durability and wearing comfort, and play a good protective role for the earphone wire, so as to be suitable for ear clip headsets of different specifications and models.

[0003] At present, the headphone wire tube is generally made by an injection molding process. During the injection molding process, the headphone wire is directly embedded in the headphone wire tube, so that the headphone wire and the headphone wire tube are integrally formed and tightly fit together. During the use of the ear clip type earphones made in this way, the headphone wire is repeatedly bent, causing the headphone wire to stretch and bend. The headphone wire is prone to breakage during long-term use, which reduces the convenience of using the ear clip type earphones. Summary of the invention

[0004] In order to solve the problem that the ear clip type earphones are repeatedly bent during use, causing the earphone wires to be stretched and bent, and the earphone wires are prone to breakage after long-term use, the present application provides a preparation process and product of the ear clip type earphone wire tube.

[0005] In a first aspect, the present application provides a process for preparing an ear clip type earphone wire tube, which adopts the following technical solution: A preparation process of an ear clip type earphone wire tube comprises the following preparation steps: S1. Bend the support wire into an arc shape as required, and injection mold fixed ends with mounting holes at both ends of the support wire; S2, coating a release agent on the surface of the dummy wire and drying it, and respectively passing the two ends of the dummy wire through the mounting holes of the two fixed ends, so that the dummy wire is correspondingly arranged on one side of the supporting wire and arranged in an arc shape, and the dummy wire and the supporting wire are arranged at intervals; S3, setting the mold injection area corresponding to one side of the dummy line, performing the first injection molding on the arc area of ​​the support line and the dummy line and part of the fixed end area, and injection molding a half-side line tube; S4, performing a second injection molding on the arc-shaped area of ​​the support wire and the dummy wire and a part of the fixed end area, and injection molding another half of the wire tube, and the two half of the wire tubes formed by the two injection moldings are tightly connected to obtain the earphone wire tube; S5. Remove the fake wire and form a through hole on the earphone wire tube; S6. Pass the earphone wire through the wire hole to obtain an ear clip type earphone wire tube.

[0006] By adopting the above technical scheme, the preparation process of the ear clip type earphone wire tube significantly improves the flexibility and durability of the earphone wire tube. The support wire plays a supporting and contouring role. Through the combination of the support wire and the earphone wire tube with a wire hole, the earphone wire tube has good flexibility and can recover to its original shape after multiple bending. At the same time, the problem that it is difficult to make a small diameter and arc-shaped wire hole in the traditional method is successfully solved. By threading a dummy wire and two injection molding methods, the first injection molding is used to fix and shape the support wire and the dummy wire, so that the dummy wire is not easy to deform, and the surface flatness and consistency of the wire hole are improved. Then the second injection molding is performed to form the wire hole, ensuring the accuracy and consistency of the wire hole. The earphone wire is inserted into the wire hole and can move in the wire hole. When the earphone wire tube is bent, it is not easy to be worn and damaged. The earphone wire tube plays a good protective role for the earphone wire. The preparation process of the present application greatly simplifies the production process and improves production efficiency. The precise design of the cable hole allows the headphone cable to be inserted smoothly, avoiding the risk of cable entanglement and breakage, and extending the service life of the headphones.

[0007] Preferably, the support wire is any one of a memory steel wire, a titanium alloy wire, and a stainless steel wire, and the diameter of the support wire is 0.1-1 mm.

[0008] By adopting the above technical solution, the above support wire has good support and flexibility, so that the headphone wire tube can return to its original shape after multiple bending; the diameter of the support wire is controlled within the range of 0.1-1mm, ensuring the dimensional accuracy of the headphone wire tube while also having good support stability.

[0009] Preferably, the dummy wire is deformable, and the diameter of the dummy wire is 1-1.5 mm.

[0010] By adopting the above technical solution, the deformable dummy wire can maintain a stable shape during the injection molding process and is easy to be pulled out after the injection molding is completed, ensuring the accuracy and consistency of the wire hole. The diameter of the dummy wire is 1-1.5mm, which meets the design requirements of the wire hole and is suitable for ear clip-type headphones with small size and high precision requirements. It allows the headphone wire to be stably fixed in the wire hole while having space for movement, reducing the problem of cracking of the headphone wire and the headphone wire tube due to the bending of the headphone wire tube.

[0011] Preferably, the dummy wire is a soft plastic-coated metal wire.

[0012] By adopting the above technical solution, the above-mentioned fake wire has good support and deformability, and can better maintain a stable shape during the injection molding process; the soft plastic coating layer can be well integrated with the headphone wire tube material during the injection molding process, improving the smoothness and flatness of the hole wall of the wire hole, thereby solving the problem of the headphone wire being damaged due to friction during use; it is also easy to pull out after injection molding without damaging the wire hole.

[0013] Preferably, the material for injection molding of the headphone wire tube is one or a combination of TPU material, TPE material and silicone material.

[0014] By adopting the above technical solution, the above material has excellent flexibility, elasticity and mechanical properties, and is suitable for headphone wire tubes.

[0015] Preferably, the material for injection molding of the earphone wire tube is TPU material, and the TPU material is made of the following raw materials in parts by weight: Modified polyurethane elastomer 80-100 parts 20-30 portions of filler 2-4 parts of external lubricant 1-3 parts of antioxidants; The modified polyurethane elastomer is prepared by melt extrusion of polyurethane elastomer, tackifier, triethylene glycol divinyl ether and polypropylene glycol diglycidyl ether.

[0016] By adopting the above technical solution, using the modified polyurethane elastomer made of polyurethane elastomer, tackifier, triethylene glycol divinyl ether and polypropylene glycol diglycidyl ether as the elastic matrix, the injection viscosity and flexibility of the prepared TPU material can be effectively improved, and it can stably melt and bond during the injection molding process, improve the stability of the wire hole of the prepared earphone wire tube and the surface smoothness of the hole wall, reduce the wear performance of the earphone wire, and the prepared earphone wire tube is not easy to break after multiple bendings, and has good wear resistance. The addition of fillers increases the density and strength of the earphone wire tube, the external lubricant improves the surface smoothness of the earphone wire tube, and the use of antioxidants prolongs the service life of the earphone wire tube.

[0017] Preferably, the modified polyurethane elastomer is prepared from the following raw materials in parts by weight: Polyurethane elastomer 100-120 parts Viscosity modifier 18-28 parts 5-10 parts of triethylene glycol divinyl ether 3-6 parts of polypropylene glycol diglycidyl ether; The viscosity modifier is composed of hydrogenated rosin pentaerythritol ester and polymethyl vinyl ether / maleic anhydride copolymer in a weight ratio of 1:(1-3).

[0018] By adopting the above technical scheme, the compounding of polyurethane elastomer with viscosity modifier, triethylene glycol divinyl ether and polypropylene glycol diglycidyl ether can enhance the flexibility, elasticity and wear resistance of the prepared headphone wire tube, so that the headphone wire tube can still maintain its original shape and flexibility after multiple bending, effectively preventing the headphone wire from being worn or broken due to repeated bending. Hydrogenated rosin pentaerythritol ester and polymethyl vinyl ether / maleic anhydride copolymer with a better weight ratio as a viscosity modifier can produce a good synergistic effect with the modified polyurethane elastomer, which can further improve the bonding force of the two half-side wire tubes during the injection molding process, ensure that the headphone wire tube is stably bonded and not easy to crack, and further improve the flexibility of the headphone wire tube.

[0019] Preferably, the filler is any one or a combination of white carbon black, calcium carbonate and barium sulfate.

[0020] By adopting the above technical solution, the above filler can improve the hardness, wear resistance and tear resistance of the headphone wire tube, thereby improving the durability of the headphone wire tube.

[0021] Preferably, the external lubricant is one or a combination of erucamide, silicone powder, polyethylene wax and pentaerythritol stearate; the antioxidant is one or a combination of antioxidant 1010, antioxidant 168 and antioxidant 1076.

[0022] By adopting the above technical solution, the above external lubricant makes the outer surface of the earphone wire tube have excellent lubricity, improving wearing comfort. The above antioxidant can improve the anti-aging performance of the earphone wire tube and extend the service life of the earphone wire tube.

[0023] In a second aspect, the present application provides an ear clip type headphone cable tube, which adopts the following technical solution: An ear clip type earphone wire tube is prepared by the above preparation process.

[0024] By adopting the above technical solution, the ear clip type headphone wire tube of the present application combines the support wire with the headphone wire tube with high flexibility and elasticity. The prepared headphone wire tube can still return to its original shape after multiple bending and is not easy to break, thereby improving the service life and usage stability of the ear clip type headphone.

[0025] In summary, this application has the following beneficial effects: 1. The preparation process of the ear clip type earphone wire tube of the present application, through the combination of the support wire and the earphone wire tube with the wire hole, makes the earphone wire tube have good flexibility and can restore to its original shape after multiple bending. At the same time, it successfully solves the problem that it is difficult to make a small diameter and arc-shaped wire hole in the traditional method. By passing the dummy wire and two injection molding methods, the first injection molding is used to fix and shape the support wire and the dummy wire, so that the dummy wire is not easy to deform, and then the second injection molding is performed to form the wire hole, ensuring the accuracy and consistency of the wire hole. The earphone wire is passed through the wire hole and can move in the wire hole. When it is bent or curved, it is not easy to wear and crack. The earphone wire tube plays a good protective role on the earphone wire, which improves the service life and stability of the ear clip type earphone.

[0026] 2. By using a modified polyurethane elastomer made of a polyurethane elastomer and a viscosity regulator, triethylene glycol divinyl ether and polypropylene glycol diglycidyl ether, and compounding it with a filler, an external lubricant and an antioxidant, the injection molding viscosity and flexibility of the prepared TPU material can be effectively improved, and it can stably melt and bond during the injection molding process, thereby improving the stability of the wire hole of the headphone cable tube prepared by two injection molding and the smoothness of the hole wall surface, and the prepared headphone cable tube is not easy to break after multiple bendings.

[0027] 3. By using hydrogenated rosin pentaerythritol ester and polymethyl vinyl ether / maleic anhydride copolymer in an optimal weight ratio as viscosity regulators, a good synergistic effect can be produced with the modified polyurethane elastomer, which can further improve the adhesion of the two half-side wire tubes during the injection molding process, ensure that the headphone wire tube is stably bonded and not prone to cracking, and further improve the flexibility of the headphone wire tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of step S2 of the preparation process of the ear clip type earphone wire tube of the present application; Figure 2 It is a structural schematic diagram of step S3 of the preparation process of the ear clip type earphone wire tube of the present application.

[0029] Figure 3 It is a schematic structural diagram of an earphone wire tube produced in steps S4-S5 of the preparation process of the ear clip type earphone wire tube of the present application. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 The present application is further described in detail with reference to the accompanying drawings and embodiments.

[0031] 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. Polyurethane elastomer: Huntsman A78P4766; 2. Polypropylene glycol diglycidyl ether: CAS number: 26142-30-3, content 99%; 3. Hydrogenated rosin pentaerythritol ester: Pande, CAS No.: 64365-17-9; 4. Polymethyl vinyl ether / maleic anhydride copolymer: Shuer, CAS No.: 9011-16-9, content 98%; 5. Silica: Fumed silica, Cabot CAB-O-SIL M5; 6. Calcium carbonate: light calcium carbonate, particle size 2000-3000 mesh; 7. Barium sulfate: particle size 2000 mesh-3000 mesh; 8. Silicone powder: Dow Corning RM4-7081.

[0032] Preparation example of modified polyurethane elastomer Preparation Example 1 Preparation Example 1 discloses a modified polyurethane elastomer, which is prepared by the following steps: 10 kg of polyurethane elastomer, 2.8 kg of viscosity modifier (composed of 1.4 kg of hydrogenated rosin pentaerythritol ester and 1.4 kg of polymethyl vinyl ether / maleic anhydride copolymer), 0.5 kg of triethylene glycol divinyl ether and 0.6 kg of polypropylene glycol diglycidyl ether were mixed, and a twin-screw extruder was used to adjust the extrusion temperature to: 220° C. in zone 1, 225° C. in zone 2, 240° C. in zone 3, 225° C. in zone 4 and 220° C. in zone 5, and melt extrusion was performed, cooled, pelletized and dried to obtain a modified polyurethane elastomer.

[0033] 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.

[0034] Table 1 Parameters of Preparation Examples 1-3 Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 1 is that the viscosity modifier is different. The viscosity modifier in Preparation Example 4 is composed of hydrogenated rosin pentaerythritol ester and poly-α-methylstyrene resin in a weight ratio of 1:1, and the poly-α-methylstyrene resin is Neutralizing Chemical ZH-6511. The rest is the same as Preparation Example 1.

[0035] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 1 is that the polymethyl vinyl ether / maleic anhydride copolymer is replaced by an equal amount of hydrogenated rosin pentaerythritol ester, and the rest is the same as Preparation Example 1.

[0036] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 1 is that triethylene glycol divinyl ether is replaced by polypropylene glycol diglycidyl ether in an equal amount, and the rest is the same as Preparation Example 1.

[0037] Preparation Example 7 The difference between Preparation Example 7 and Preparation Example 1 is that an equal amount of polypropylene glycol diglycidyl ether is replaced by dioctyl phthalate, and the rest is the same as Preparation Example 1.

[0038] Preparation example of TPU material Preparation Example 8 Preparation Example 8 discloses a TPU material, which is prepared by the following steps: 8 kg of the modified polyurethane elastomer obtained in Preparation Example 1, 2 kg of filler (composed of white carbon black and barium sulfate in a weight ratio of 2:1), 0.2 kg of silicone powder as an external lubricant and 0.1 kg of antioxidant (composed of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1) were added to a twin-screw extruder, and the extrusion temperature was adjusted to: 210°C in zone 1, 225°C in zone 2, 230°C in zone 3, 225°C in zone 4 and 215°C in zone 5 for melt extrusion, cooling, pelletizing and drying to obtain TPU material.

[0039] Preparation Examples 9-10 The difference between Preparation Examples 9-10 and Preparation Example 1 is that the amounts of raw materials used and the preparation conditions are different, see Table 2 below for details.

[0040] Table 2 Parameters of Preparation Examples 8-10 Preparation Examples 11-14 The difference between Preparation Examples 11-14 and Preparation Example 9 is that the modified polyurethane elastomers are different, see Table 3 below for details.

[0041] Table 3 Sources of modified polyurethane elastomers of Preparation Examples 11-14 Example Example 1 Embodiment 1 discloses a process for preparing an ear clip type earphone wire tube, comprising the following steps: S1. Use a memory steel wire with a diameter of 0.5 mm as a support wire, bend the support wire into an arc shape as required, and fix it on a positioning fixture. Then place the positioning fixture in an injection molding machine, and use commercially available TPU material for injection molding at both ends of the support wire. Fixed ends with mounting holes are injection molded at both ends of the support wire. The length of the arc-shaped support wire between the fixed ends is 40 mm. S2. Prepare a soft plastic-coated metal wire with a length of 50 mm and a diameter of 1.5 mm as a dummy wire. The soft plastic-coated metal wire is preferably a TPU-coated copper wire, which has deformability and can be bent arbitrarily without breaking. Coat a commercially available release agent (silicone oil) on the surface of the dummy wire and dry it. Pass the two ends of the dummy wire through the mounting holes of the two fixed ends, so that the dummy wire is correspondingly arranged on one side of the support wire and is arranged in an arc shape, and the dummy wire and the support wire are arranged at intervals. Figure 1 .

[0042] S3. Place the arc area of ​​the support line and the arc area of ​​the dummy line and part of the fixed end area in the profiling fixture of the injection molding machine for positioning, and set the injection molding area of ​​the fixture corresponding to one side of the dummy line. Use commercially available TPU material for the first injection molding, control the injection molding temperature to 230°C, and injection mold a half-side wire tube. The half-side wire tube fixes and shapes the arc area of ​​the support line and the dummy line and part of the fixed end area. Refer to Figure 2 ; S4. Turn over the arc area of ​​the support line, the arc area of ​​the dummy line and part of the fixed end area and place them in a profiling jig of an injection molding machine for positioning. Use commercially available TPU material for a second injection molding. Control the injection molding temperature to be 230° C. and injection mold the other half of the wire tube. The two half of the wire tubes molded by the two injection moldings are arranged correspondingly and are tightly connected and bonded to obtain an earphone wire tube with a diameter of 3 mm. S5. Remove the fake wire and form a 1.5mm through hole on the earphone wire tube. Figure 3 ; S6. Perform nitriding treatment for 30 minutes at a temperature of -80°C and a rotation speed of 5800 r / min to improve the uniformity, flatness and strength of the headphone wire tube surface; S7, passing the earphone wire through the wire hole to obtain an ear clip type earphone wire tube; Among them, the TPU material is commercially available Wanhua TPU 9022.

[0043] Embodiment 2-4 The difference between Example 2-4 and Example 1 is that the preparation process parameters are different, see Table 4 below for details.

[0044] Table 4 Parameters of Examples 2-4 Embodiment 5-8 The difference between Examples 5-8 and Example 2 is that the sources of TPU materials are different, see Table 5 below for details.

[0045] Table 5 Sources of TPU materials in Examples 5-8 Example Source table of TPU materials Example 5 Preparation Example 11 Example 6 Preparation Example 12 Example 7 Preparation Example 13 Example 8 Preparation Example 14 Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that: S1. Use a memory steel wire with a diameter of 0.5 mm as a support wire, bend the support wire into an arc shape as required, and fix it on a positioning fixture. Then place the positioning fixture in an injection molding machine, and use commercially available TPU material for injection molding at both ends of the support wire. Fixed ends with mounting holes are injection molded at both ends of the support wire. The length of the arc-shaped support wire between the fixed ends is 40 mm. S2. Prepare a soft plastic-coated metal wire with a length of 50 mm and a diameter of 1.5 mm as a dummy wire. The soft plastic-coated metal wire is preferably a TPU-coated copper wire, which has deformability and can be bent arbitrarily without breaking. Coat the surface of the dummy wire with a commercially available release agent (silicone oil) and dry it. Pass the two ends of the dummy wire through the mounting holes of the two fixed ends respectively, so that the dummy wire is correspondingly arranged on one side of the support wire and is arranged in an arc shape, and the dummy wire and the support wire are arranged at an interval.

[0046] S3, placing the arc area of ​​the support line and the arc area of ​​the dummy line and part of the fixed end area in the profiling jig of the injection molding machine for positioning, and setting one side of the dummy line corresponding to the jig injection molding area, using commercially available TPU material for injection molding, controlling the injection molding temperature to 230°C, and directly injection molding a complete headphone cable tube; S5. Remove the fake wire and form a 1.5mm through hole on the earphone wire tube. S6. Perform nitriding treatment for 30 minutes at a temperature of -80°C and a rotation speed of 5800 r / min to improve the uniformity, flatness and strength of the headphone wire tube surface; S7. Pass the earphone wire through the wire hole to obtain an ear clip type earphone wire tube; wherein the TPU material is commercially available Wanhua TPU9022.

[0047] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the earphone wire is directly injection molded using commercially available TPU material, and an earphone wire tube is injection molded on the outer surface of the earphone wire. The injection molding conditions are the same as those of Example 1.

[0048] Performance Testing The following performance tests were conducted on the ear clip type earphone wire tubes prepared in Examples 1-8 and Comparative Examples 1-2: 1. Test of wear and cracking of headphone cable surface: The prepared ear clip-type headphone cable tube was subjected to a folding test. After being folded 2500 times, the headphone cable was pulled out from the cable hole, and the wear and cracking of the headphone cable surface was observed. The test results were tested and recorded. 2. Consistency test of the cable holes of the headphone cable tube; Record whether the headphone cable can be smoothly passed through the cable hole of the headphone cable tube, test and record the test results; 2. Wear resistance test of ear clip headphone cable: Use a wear tester with a load of 500g, wipe standard artificial sweat with cotton cloth, adjust the test speed to 60r / min, record the number of frictions when wear marks appear on the surface of the headphone wire tube, and record the test results; The following are the performance test data of the ear clip type earphone wire tubes of Examples 1-8 and Comparative Examples 1-2, see Table 6 below for details.

[0049] Table 6 Data table of ear clip type earphone wire tubes of Examples 1-8 and Comparative Examples 1-2 “ / ” means not detected.

[0050] In combination with Example 1 and Comparative Examples 1-2 and Table 6, it can be seen that the headphone wire tube prepared by the two-time injection molding process of the present application has good buffering and protection performance for the headphone wire. After the bending test, the wear on the surface of the headphone wire is small and there is no cracking, and the headphone wire can be smoothly passed through the wire hole; while in Comparative Example 1, the two-time injection molding is replaced by one-time injection molding, and the prepared headphone wire is obviously worn, and the headphone wire is difficult to pass through. This may be because the fake wire cannot be stably shaped, causing the fake wire to bend during the injection molding process, which reduces the consistency and flatness of the surface of the wire hole; while in Comparative Example 2, the headphone wire is directly injection-molded and coated, and cracks appear after the folding test.

[0051] Combining Example 1 and Example 2-8 and Table 6, it can be seen that further optimizing the TPU material used in injection molding can further improve the bending resistance and wear resistance of the ear clip type earphone wire tube, and reduce the wear and cracking of the earphone wire. Compared with Example 1, the wear of the earphone wire surface after the folding test in Example 2-4 is reduced, and the wear resistance of the outer surface of the earphone wire tube is significantly improved; compared with Example 2, the types and proportions of components used in the preparation of the modified polyurethane elastomer in Example 5-8 are changed. After the folding test, the wear of the ear clip type earphone wire tube is increased, and the wear resistance of the earphone wire tube surface is also reduced. This shows that the compound use of the modified polyurethane elastomer of the present application plays a significant role in improving the performance of the ear clip type earphone wire tube of the present application. It can improve the surface flatness of the wire hole of the earphone wire tube, and can also improve its wear resistance, thereby improving the service life of the ear clip type earphone.

[0052] 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, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A process for preparing an ear clip type earphone wire tube, characterized in that: The method comprises the following preparation steps: S1. Bend the support wire into an arc shape as required, and injection mold fixed ends with mounting holes at both ends of the support wire; S2, coating a release agent on the surface of the dummy wire and drying it, and respectively passing the two ends of the dummy wire through the mounting holes of the two fixed ends, so that the dummy wire is correspondingly arranged on one side of the supporting wire and arranged in an arc shape, and the dummy wire and the supporting wire are arranged at intervals; S3, setting the mold injection area corresponding to one side of the dummy line, performing the first injection molding on the arc area of ​​the support line and the dummy line and part of the fixed end area, and injection molding a half-side line tube; S4, performing a second injection molding on the arc-shaped area of ​​the support wire and the dummy wire and a part of the fixed end area, and injection molding another half of the wire tube, and the two half of the wire tubes formed by the two injection moldings are tightly connected to obtain the earphone wire tube; S5. Remove the fake wire and form a through hole on the earphone wire tube; S6. Pass the earphone wire through the wire hole to obtain an ear clip type earphone wire tube.

2. The process for preparing the ear clip type earphone wire tube according to claim 1, characterized in that: The support wire is any one of a memory steel wire, a titanium alloy wire, and a stainless steel wire, and the diameter of the support wire is 0.1-1 mm.

3. The process for preparing the ear clip type earphone wire tube according to claim 1, characterized in that: The dummy wire is deformable, and the diameter of the dummy wire is 1-1.5 mm.

4. The process for preparing the ear clip type earphone wire tube according to claim 3, characterized in that: The dummy wire is a soft plastic-coated metal wire.

5. The process for preparing the ear clip type earphone wire tube according to claim 1, characterized in that: The material for injection molding of the earphone wire tube is one or a combination of TPU material, TPE material and silicone material.

6. The process for preparing the ear clip type earphone wire tube according to claim 5, characterized in that: The material for injection molding of the earphone wire tube is TPU material, and the TPU material is made of the following raw materials in parts by weight: Modified polyurethane elastomer 80-100 parts 20-30 portions of filler 2-4 parts of external lubricant 1-3 parts of antioxidants; The modified polyurethane elastomer is prepared by melt extrusion of polyurethane elastomer, tackifier, triethylene glycol divinyl ether and polypropylene glycol diglycidyl ether.

7. The process for preparing the ear clip type earphone wire tube according to claim 6, characterized in that: The modified polyurethane elastomer is prepared from the following raw materials in parts by weight: Polyurethane elastomer 100-120 parts Viscosity modifier 18-28 parts 5-10 parts of triethylene glycol divinyl ether 3-6 parts of polypropylene glycol diglycidyl ether; The viscosity modifier is composed of hydrogenated rosin pentaerythritol ester and polymethyl vinyl ether / maleic anhydride copolymer in a weight ratio of 1:(1-3).

8. The process for preparing the ear clip type earphone wire tube according to claim 6, characterized in that: The filler is any one or a combination of white carbon black, calcium carbonate and barium sulfate.

9. The process for preparing the ear clip type earphone wire tube according to claim 6, characterized in that: The external lubricant is one or a combination of erucamide, silicone powder, polyethylene wax and pentaerythritol stearate; the antioxidant is one or a combination of antioxidant 1010, antioxidant 168 and antioxidant 1076.

10. An ear clip type earphone cable tube, characterized in that: The invention is prepared by the preparation process according to any one of claims 1 to 9.

Images