CN111246333B - Forming process of ear-hanging earphone - Google Patents

Forming process of ear-hanging earphone Download PDF

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Publication number
CN111246333B
CN111246333B CN202010054321.5A CN202010054321A CN111246333B CN 111246333 B CN111246333 B CN 111246333B CN 202010054321 A CN202010054321 A CN 202010054321A CN 111246333 B CN111246333 B CN 111246333B
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molding
earphone
ear
temperature
molded plastic
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CN111246333A (en
Inventor
刘家荣
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Xingke Electronics Dongguan Co Ltd
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Xingke Electronics Dongguan Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to the technical field of earphones, in particular to a molding process of an ear-hung earphone, which comprises the steps of injection molding, gluing, oil pressure molding, polishing and spraying, wherein double-color high-temperature solid silica gel is adopted as a raw material, so that the flowability of a sizing material can be prevented from being too good, the firm bonding of the sizing material is ensured, no layering is generated in the using process, the rebound resilience is good, and the heat resistance is good; the treating agent used in the invention has the property of low-temperature curing, and can not cause the deformation of the bracket; the release agent used in the invention can improve the smoothness of the titanium wire, is beneficial to recycling the titanium wire in the defective earphone, and saves the cost. The molding process of the ear-hanging earphone has the advantages of simple raw materials, low cost and recyclability.

Description

Forming process of ear-hanging earphone
Technical Field
The invention relates to the technical field of earphones, in particular to a molding process of an ear-hung earphone.
Background
In daily life, along with personal communication equipment's development, the application of cell-phone, computer is more and more extensive, more and more people like to wear the earphone and use electronic product broadcast audio frequency, and meanwhile, people are higher and higher to the requirement of appearance, feel etc. of earphone, current earphone shell adopts plastics to make mostly, the mode that the outside sprayed paint is adopted to the colour molding of earphone shell more, the lacquer layer is worn and torn easily, also be corroded by human sweat easily and change colour, cause the damage to the outward appearance of earphone shell.
Disclosure of Invention
The invention aims to provide a forming process of an ear-hanging earphone aiming at the defects of the prior art, which takes high-temperature solid silica gel as a raw material, has the characteristics of wear resistance, difficult color change and deformation, and meets the daily requirements of people.
In order to achieve the purpose, the invention adopts the following technical scheme:
the forming process of the ear-hanging earphone is characterized by comprising the following steps: it comprises the following steps:
step one, injection molding: soaking the titanium wire in injection molding glue, taking out the titanium wire, and vulcanizing the titanium wire by adding sulfur to obtain an injection molding part;
step two, gluing: coating a layer of treating agent on the surface of the injection molding part obtained in the step one, and then vulcanizing by adding sulfur to obtain a molded plastic part;
step three, oil pressure forming: connecting the two ends of the molded plastic part obtained in the step two with a bracket, and then sequentially putting the molded plastic part into a primary molding die, a secondary molding die and a tertiary molding die filled with high-temperature solid silica gel to perform primary oil pressure vulcanization molding, secondary oil pressure vulcanization molding and tertiary oil pressure vulcanization molding to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying ink on the surface of the smooth earphone obtained in the step four, and then adding sulfur for vulcanization to obtain the ear-hung earphone.
In the technical scheme, in the first step, the titanium wire is soaked in the injection molding glue, taken out and vulcanized for 10-20 min at the temperature of 75-85 ℃ by adding sulfur, and then the injection molded part is obtained.
In the technical scheme, in the second step, a layer of treating agent is coated on the surface of the injection molding piece obtained in the first step, and then vulcanization is carried out for 10-20 min at the temperature of 110-130 ℃ by adding sulfur, so as to obtain the molded plastic piece.
In the technical scheme, in the third step, the two ends of the molded plastic part obtained in the second step are connected with the support, and then the molded plastic part is placed into a one-step molding die filled with high-temperature solid silica gel, and the temperature and the pressure are 160-180 ℃ and 90-110 kg/cm2Under the condition of (1), carrying out primary oil pressure vulcanization molding for 140-160 s, and then putting the molded product into a secondary molding die filled with high-temperature solid silica gel, wherein the temperature is 160-180 ℃, and the pressure is 90-110 kg/cm2The secondary oil pressure vulcanization molding is carried out for 290-310 s under the condition, and then the obtained product is put into a tertiary molding die filled with high-temperature solid silica gel, the temperature is 160-180 ℃, and the pressure is 90-110 kg/cm2And carrying out three-time oil pressure vulcanization molding for 290-310 s under the condition to obtain the rudiment earphone.
In the technical scheme, in the fifth step, ink with the viscosity of 9-11 s/bucket and the thickness of 10-14 mu m is sprayed on the surface of the smooth earphone obtained in the fourth step, and then sulfur is added to vulcanize the smooth earphone for 55-65 min at the temperature of 140-160 ℃, so that the ear-hanging earphone is obtained.
Specifically, the injection molding glue is AB glue.
Specifically, the treating agent is glue.
Specifically, after a layer of release agent is coated on the surface of the molded plastic part, two ends of the molded plastic part are connected with the bracket.
The invention has the beneficial effects that:
the forming process of the ear-hung earphone comprises the steps of injection molding, gluing, oil pressure forming, polishing and spraying, adopts bicolor high-temperature solid silica gel as a raw material, can avoid the over-good fluidity of a sizing material, ensures that the sizing material is firmly combined, cannot generate layering in the using process, has good rebound resilience and has better heat resistance; the treating agent used in the invention has the property of low-temperature curing, and can not cause the deformation of the bracket; the release agent used in the invention can improve the smoothness of the titanium wire, is beneficial to recycling the titanium wire in the defective earphone, and saves the cost. The molding process of the ear-hanging earphone has the advantages of simple raw materials, low cost and recyclability.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1.
A molding process of an ear-hanging earphone comprises the following steps:
step one, injection molding: soaking the titanium wire in the injection molding glue, taking out the titanium wire, adding sulfur, and vulcanizing the titanium wire for 15min at the temperature of 80 ℃ to obtain an injection molded part;
step two, gluing: coating a layer of treating agent on the surface of the injection molding piece obtained in the step one, and then adding sulfur to vulcanize for 15min at the temperature of 120 ℃ to obtain a molded plastic piece;
step three, oil pressure forming: coating a layer of release agent on the surface of the molded plastic part obtained in the step two, connecting the two ends of the molded plastic part with brackets, and then putting the molded plastic part into a one-step molding die filled with high-temperature solid silica gel at the temperature of 170 ℃ and the pressure of 100kg/cm2Under the condition of (1), carrying out primary oil pressure vulcanization molding for 150s, then placing the molded product into a secondary molding die filled with high-temperature solid silica gel, and carrying out secondary molding at the temperature of 170 ℃ and the pressure of 100kg/cm2The secondary oil pressure vulcanization molding is carried out for 300s under the condition, and then the three-time forming mold filled with high-temperature solid silica gel is put into the moldWherein the temperature is 170 ℃ and the pressure is 100kg/cm2Carrying out three-time oil pressure vulcanization molding for 300s under the condition to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying printing ink with the viscosity of 10 s/bucket and the thickness of 12 mu m on the smooth earphone surface obtained in the step four, and then adding sulfur to vulcanize for 60min at the temperature of 150 ℃ to obtain the ear-hung earphone.
In this embodiment, the injection molding glue is AB glue, and the treating agent is glue.
Example 2.
A molding process of an ear-hanging earphone comprises the following steps:
step one, injection molding: soaking the titanium wire in injection molding glue, taking out the titanium wire, adding sulfur, and vulcanizing for 17min at the temperature of 77 ℃ to obtain an injection molding piece;
step two, gluing: coating a layer of treating agent on the surface of the injection molding piece obtained in the step one, and then adding sulfur to vulcanize for 17min at the temperature of 115 ℃ to obtain a molded plastic piece;
step three, oil pressure forming: coating a layer of release agent on the surface of the molded plastic part obtained in the step two, connecting the two ends of the molded plastic part with brackets, and then putting the molded plastic part into a one-step molding die filled with high-temperature solid silica gel at the temperature of 165 ℃ and the pressure of 95kg/cm2Under the condition of (1), carrying out primary oil pressure vulcanization molding for 155s, then putting the molded product into a secondary molding die filled with high-temperature solid silica gel, and carrying out secondary molding at the temperature of 165 ℃ and the pressure of 95kg/cm2The second oil pressure vulcanization molding is carried out for 305s, and then the mixture is put into a third molding die filled with high-temperature solid silica gel, the temperature is 165 ℃ and the pressure is 95kg/cm2Carrying out three-time oil pressure vulcanization molding for 305s under the condition to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying ink with the viscosity of 9.5 s/bucket and the thickness of 11 mu m on the smooth earphone surface obtained in the step four, and then adding sulfur to vulcanize for 63min at the temperature of 145 ℃ to obtain the ear-hung earphone.
In this embodiment, the injection molding glue is AB glue, and the treating agent is glue.
Example 3.
A molding process of an ear-hanging earphone comprises the following steps:
step one, injection molding: soaking the titanium wire in injection molding glue, taking out the titanium wire, adding sulfur, and vulcanizing for 13min at 83 ℃ to obtain an injection molding piece;
step two, gluing: coating a layer of treating agent on the surface of the injection molding piece obtained in the step one, and then adding sulfur to vulcanize for 13min at the temperature of 125 ℃ to obtain a molded plastic piece;
step three, oil pressure forming: coating a layer of release agent on the surface of the molded plastic part obtained in the step two, connecting the two ends of the molded plastic part with brackets, and then putting the molded plastic part into a one-step molding die filled with high-temperature solid silica gel at the temperature of 175 ℃ and the pressure of 105kg/cm2Under the condition of (1), carrying out primary oil pressure vulcanization molding for 145s, then putting the molded product into a secondary molding die filled with high-temperature solid silica gel, and carrying out secondary molding at the temperature of 175 ℃ and the pressure of 105kg/cm2Under the condition of (1), carrying out secondary oil pressure vulcanization molding for 295s, then putting the molded product into a three-time molding die filled with high-temperature solid silica gel, and carrying out vulcanization molding at the temperature of 175 ℃ and the pressure of 105kg/cm2Carrying out three-time oil pressure vulcanization molding for 295s under the condition to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying ink with the viscosity of 10.5 s/bucket and the thickness of 13 mu m on the smooth earphone surface obtained in the step four, and then adding sulfur to vulcanize for 57min at the temperature of 155 ℃ to obtain the ear-hung earphone.
In this embodiment, the injection molding glue is AB glue, and the treating agent is glue.
Example 4.
A molding process of an ear-hanging earphone comprises the following steps:
step one, injection molding: soaking the titanium wire in injection molding glue, taking out the titanium wire, adding sulfur, and vulcanizing for 20min at the temperature of 75 ℃ to obtain an injection molding piece;
step two, gluing: coating a layer of treating agent on the surface of the injection molding piece obtained in the step one, and then adding sulfur to vulcanize for 20min at the temperature of 110 ℃ to obtain a molded plastic piece;
step three, oil pressure forming: coating a layer of release agent on the surface of the molded plastic part obtained in the step two, connecting the two ends of the molded plastic part with brackets, and then putting the molded plastic part into a one-step molding die filled with high-temperature solid silica gel at the temperature of 160 ℃ and the pressure of 90kg/cm2Under the condition of (1), carrying out primary oil pressure vulcanization molding for 160s, then placing the molded product into a secondary molding die filled with high-temperature solid silica gel, and carrying out secondary molding at the temperature of 160 ℃ and the pressure of 90kg/cm2The mixture is put into a three-time forming die filled with high-temperature solid silica gel at the temperature of 160 ℃ and the pressure of 90kg/cm2Carrying out three-time oil pressure vulcanization molding for 310s under the condition to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying ink with the viscosity of 9 s/bucket and the thickness of 10 mu m on the surface of the smooth earphone obtained in the step four, and then adding sulfur to vulcanize for 65min at the temperature of 140 ℃ to obtain the ear-hung earphone.
In this embodiment, the injection molding glue is AB glue, and the treating agent is glue.
Example 5.
A molding process of an ear-hanging earphone comprises the following steps:
step one, injection molding: soaking the titanium wire in injection molding glue, taking out the titanium wire, adding sulfur, and vulcanizing for 10min at the temperature of 85 ℃ to obtain an injection molding piece;
step two, gluing: coating a layer of treating agent on the surface of the injection molding piece obtained in the step one, and then adding sulfur to vulcanize for 10min at the temperature of 130 ℃ to obtain a molded plastic piece;
step three, oil pressure forming: coating a layer of release agent on the surface of the molded plastic part obtained in the step two, connecting the two ends of the molded plastic part with the brackets, and then putting the molded plastic part into a one-step molding die filled with high-temperature solid silica gel at the temperature of 180 ℃ and the pressure of 110kg/cm2Under the condition of (3), the primary oil pressure vulcanization molding is carried out for 140s,then putting the mixture into a secondary forming die filled with high-temperature solid silica gel, and performing secondary forming at 180 ℃ and 110kg/cm under pressure2The second oil pressure vulcanization molding is carried out for 290s under the condition, and then the mixture is put into a third molding die filled with high-temperature solid silica gel, the temperature is 180 ℃, and the pressure is 110kg/cm2Carrying out three-time oil pressure vulcanization molding for 290s under the condition of (1) to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying ink with the viscosity of 11 s/bucket and the thickness of 14 mu m on the smooth earphone surface obtained in the step four, and then adding sulfur to vulcanize for 55min at the temperature of 160 ℃, thus obtaining the ear-hung earphone.
In this embodiment, the injection molding glue is AB glue, and the treating agent is glue.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. A molding process of an ear-hanging earphone is characterized in that: it comprises the following steps:
step one, injection molding: soaking the titanium wire in injection molding glue, taking out the titanium wire, and vulcanizing the titanium wire by adding sulfur to obtain an injection molding part;
step two, gluing: coating a layer of treating agent on the surface of the injection molding part obtained in the step one, and then vulcanizing by adding sulfur to obtain a molded plastic part;
step three, oil pressure forming: connecting the two ends of the molded plastic part obtained in the step two with a bracket, and then sequentially putting the molded plastic part into a primary molding die, a secondary molding die and a tertiary molding die filled with high-temperature solid silica gel to perform primary oil pressure vulcanization molding, secondary oil pressure vulcanization molding and tertiary oil pressure vulcanization molding to obtain a rudiment earphone;
step four, polishing: polishing burrs of the rudders obtained in the step three to obtain a smooth earphone;
step five, spraying: and D, spraying ink on the surface of the smooth earphone obtained in the step four, and then adding sulfur for vulcanization to obtain the ear-hung earphone.
2. The molding process of an ear-hook earphone according to claim 1, wherein: in the first step, the titanium wire is soaked in the injection molding glue, taken out and vulcanized for 10-20 min at the temperature of 75-85 ℃ by adding sulfur, and then the injection molding piece is obtained.
3. The molding process of an ear-hook earphone according to claim 1, wherein: and in the second step, coating a layer of treating agent on the surface of the injection molding piece obtained in the first step, and then adding sulfur to vulcanize for 10-20 min at the temperature of 110-130 ℃ to obtain the molded plastic piece.
4. The molding process of an ear-hook earphone according to claim 1, wherein: in the third step, the two ends of the molded plastic part obtained in the second step are connected with the support, and then the molded plastic part is placed into a one-step molding die filled with high-temperature solid silica gel, and the temperature and the pressure are 160-180 ℃ and 90-110 kg/cm2Under the condition of (1), carrying out primary oil pressure vulcanization molding for 140-160 s, and then putting the molded product into a secondary molding die filled with high-temperature solid silica gel, wherein the temperature is 160-180 ℃, and the pressure is 90-110 kg/cm2The secondary oil pressure vulcanization molding is carried out for 290-310 s under the condition, and then the obtained product is put into a tertiary molding die filled with high-temperature solid silica gel, the temperature is 160-180 ℃, and the pressure is 90-110 kg/cm2And carrying out three-time oil pressure vulcanization molding for 290-310 s under the condition to obtain the rudiment earphone.
5. The molding process of an ear-hook earphone according to claim 1, wherein: and in the fifth step, ink with the viscosity of 9-11 s/bucket and the thickness of 10-14 mu m is sprayed on the surface of the smooth earphone obtained in the fourth step, and then the smooth earphone is vulcanized for 55-65 min at the temperature of 140-160 ℃ by adding sulfur, so that the ear-hanging earphone is obtained.
6. The molding process of an ear-hook earphone according to claim 2, wherein: the injection molding glue is AB glue.
7. The molding process of an ear-hook earphone according to claim 3, wherein: the treating agent is glue.
8. The molding process of an ear-hook earphone according to claim 4, wherein: and after a layer of release agent is coated on the surface of the molded plastic part, two ends of the molded plastic part are connected with the bracket.
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Publication number Priority date Publication date Assignee Title
CN111843400B (en) * 2020-08-14 2021-11-19 惠州市成达电子有限公司 Production method of ear-hanging earphone
CN114196225A (en) * 2021-12-20 2022-03-18 东莞市鑫科精密科技有限公司 Production method of silica gel for earphone jack
CN114505463A (en) * 2022-02-17 2022-05-17 兴高精密科技(东莞)有限公司 Die-casting model of sports earphone

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CN208402086U (en) * 2018-07-10 2019-01-18 深圳市慕客科技有限公司 Supra-aural earphone angle-regulation structure
CN110193950A (en) * 2019-05-15 2019-09-03 兴科电子(东莞)有限公司 A kind of multiple moulding process of UV glue earphone plug

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KR101620371B1 (en) * 2009-12-09 2016-05-12 삼성전자주식회사 Customized earphone
CN110184026A (en) * 2019-05-15 2019-08-30 兴科电子(东莞)有限公司 A kind of titanium silk and the nylon solid bonding with silica gel and its preparation method and application method

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CN208402086U (en) * 2018-07-10 2019-01-18 深圳市慕客科技有限公司 Supra-aural earphone angle-regulation structure
CN110193950A (en) * 2019-05-15 2019-09-03 兴科电子(东莞)有限公司 A kind of multiple moulding process of UV glue earphone plug

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