CN107945999B - Earphone wire middle gear part, processing die and processing method thereof - Google Patents
Earphone wire middle gear part, processing die and processing method thereof Download PDFInfo
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- CN107945999B CN107945999B CN201710983689.8A CN201710983689A CN107945999B CN 107945999 B CN107945999 B CN 107945999B CN 201710983689 A CN201710983689 A CN 201710983689A CN 107945999 B CN107945999 B CN 107945999B
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- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 8
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
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- 239000010865 sewage Substances 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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Abstract
The invention discloses a middle part of an earphone wire, a processing mould and a processing method thereof, wherein the middle part of the earphone wire comprises a main wire sleeve, two branch wire sleeves, a core wire, a triangle fork, an inner mould and an outer mould, wherein the core wire penetrates into the two branch wire sleeves correspondingly after passing through the main wire sleeve; the triangular fork penetrates into the main line sleeve and the two branch line sleeves, and the inner mold is coated at the joint of the main line sleeve and the two branch line sleeves; the outer mold is coated outside the inner mold; the middle-grade die comprises an upper die and a lower die, wherein a main wire groove, a branch wire groove and a die cavity are respectively arranged in the upper die and the lower die; the processing method comprises the following steps: peeling a middle gear line, cutting a bulletproof wire, threading a sleeve, forming a triangular fork, threading a triangular fork, forming a middle gear inner mold, forming a middle gear outer mold and detecting the appearance. Therefore, the main line and the branch line sleeve are tightly connected by combining the inner die and the outer die at the middle part of the earphone wire, so that the higher hanging weight performance of the middle part of the earphone wire is met, and the overall tensile property of the earphone wire is improved.
Description
Technical Field
The invention relates to the technology in the field of earphone wires, in particular to a middle part of an earphone wire, a processing die and a processing method thereof.
Background
With the continuous development of electronic technology, the types of portable electronic devices with audio signal playing function, such as MP3 (music player), mobile phone, PAD (tablet computer) and the like, are more and more popular. The earphone can directly transmit the sound emitted by the various electronic devices to ears of a user, so that the influence of an external noisy environment on a listening effect is avoided, a high-quality sound signal is provided for the user, and other people around the earphone cannot be interfered.
When the existing earphone line is produced, a plug part is generally injection molded, then an earphone core wire is divided into a left path and a right path, a sleeve is arranged on the core wire, and the sleeve and an earphone main wire part are fixed by injection molding; and finally, the tail gear is injection molded at the other end of one sleeve. When the tail gear is injection molded, the injection molding position of the tail gear is determined by using the device, then the injection molding is performed to form a middle gear part, and the joint of the main line and the two branch lines in the earphone line manufactured by the process is generally wrapped and combined by only one external block, so that the earphone line can only bear two kilograms of hanging weight in an empty pipe state, and the high hanging weight performance requirement cannot be met. Therefore, the conventional earphone line middle part should be improved to improve its hanging weight performance.
Disclosure of Invention
In view of the above, the present invention aims at overcoming the drawbacks of the prior art, and its main object is to provide a middle gear part of an earphone wire, a processing mold and a processing method thereof, which make the connection between a main wire sleeve and a branch wire sleeve tighter by combining an inner mold and an outer mold in the middle gear part of the earphone wire, thereby satisfying the hanging performance of 3KG of hanging weight in the empty pipe state of the middle gear part of the earphone wire and improving the overall tensile property of the earphone wire.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the middle gear part of the earphone wire comprises a main wire sleeve, two branch wire sleeves, a core wire, a triangular fork, an inner mold and an outer mold, wherein the core wire penetrates into the two branch wire sleeves correspondingly after passing through the main wire sleeve, and the main wire sleeve is gathered and combined with the two branch wire sleeves; the triangle fork comprises a base part, a first extension arm and two second extension arms, wherein the first extension arm is integrally extended upwards from the base part, the two second extension arms are integrally extended downwards from the base part, the first extension arm extends into the main line sleeve, and the two second extension arms correspondingly extend into the two branch line sleeves respectively; the internal mold is coated at the joint of the main line sleeve and the two branch line sleeves; the outer mold is coated outside the inner mold.
A middle-grade die for processing a middle-grade part of an earphone wire comprises an upper die and a lower die which are mutually matched in a vertical separable way, wherein the upper die and the lower die are respectively provided with a main wire groove for accommodating the main wire sleeve and a branch wire groove for accommodating the branch wire sleeve, a die cavity for injection molding an inner die and an outer die is arranged at the joint of the main wire groove and the branch wire groove, glue injection grooves communicated with the die cavity are respectively arranged at two sides of the die cavity, and a die cavity middle wire groove for enabling the main wire sleeve and the branch wire sleeve to be aligned in order is transversely arranged at the joint of the main wire groove and the branch wire groove.
A processing method for manufacturing a middle-grade part of an earphone wire by adopting a middle-grade die comprises the following processing steps:
s1, peeling the earphone wire by using a hot peeling machine at 765mm-767mm from the earphone wire plug, wherein the part of the earphone wire, which is not exposed by the hot peeling machine, is a main line part, and the outer skin of the main line part is a main line sleeve;
s2, cutting the bulletproof wire in a middle grade, arching the core wire at the peeling opening of the earphone wire, blowing the bulletproof wire to one side by adopting a blowing jig, cutting off the bulletproof wire at the peeling opening by using scissors, and axially pumping the bulletproof wire out of the core wire bundle at the tail end of the exposed core wire;
s3, threading the sleeve, preparing two branch line sleeves, dividing the core wire exposed in the step S2 into two strands from the root, threading each strand of core wire into one branch line sleeve correspondingly, pulling the two branch line sleeves to be flush with the tail end of the main line sleeve in the step S1, and bending the tail end of the core wire to prevent the branch line sleeve from falling off from the core wire;
s4, forming the triangular fork by adopting a vertical injection molding machine, and checking whether the formed triangular fork has a glue shortage, wherein the formed triangular fork comprises a base part, a first extension arm integrally extending upwards from the base part and two second extension arms integrally extending downwards from the base part, and the first extension arm and the two second extension arms form a fork-shaped structure;
s5, penetrating through the triangular fork, enabling a first extension arm of the triangular fork to extend into the main line sleeve from the peeling port, and enabling two second extension arms to extend into the two branch line sleeves correspondingly;
s6, forming a middle-grade internal mold, namely placing a main line sleeve into a main line groove, placing two branch line sleeves into branch line grooves respectively, placing the joint of the main line sleeve and the branch line sleeve into a mold cavity, placing the joint of the main line sleeve and the branch line sleeve on the mold cavity in the mold cavity, after closing the upper mold and the lower mold, injecting glue into the mold cavity through a glue injection groove, forming the internal mold outside the joint of the main line sleeve and the branch line sleeve after heating and forming, and taking out the middle-grade part after forming the internal mold;
s7, forming a middle-grade outer mold, namely placing the main line sleeve into the main line groove, respectively placing the two branch line sleeves into the branch line grooves, placing an inner mold at the joint of the main line sleeve and the branch line sleeve into a mold cavity, after the upper mold and the lower mold are closed, injecting glue into the mold cavity by the glue injection groove, forming an outer mold which is the same as the inner mold in material outside the main line sleeve, the branch line sleeve and the inner mold after heating forming, wrapping the outer mold outside the whole inner mold, and taking out a middle-grade part after forming the outer mold;
s8, appearance detection, namely, rotating the middle gear part by 360 degrees, checking whether the outer die body has bad phenomena such as material shortage, glue flushing, shrinkage and the like, calling out bad products, and enabling the good products to enter the next working station.
As a preferred embodiment: in the step S6, after the inner mold is formed, cleaning treatment is performed on the outer wall of the inner mold.
As a preferred embodiment: in the step S6, in the inner mold forming process, the forming temperature is: upper section 215-235 degrees and lower section 220-240 degrees.
As a preferred embodiment: in the step S7, during the process of forming the outer mold, the forming temperature is as follows: the upper section is 230-250 degrees and the lower section is 235-255 degrees.
As a preferred embodiment: in the step S4, in the process of forming the triangular fork, the forming temperature is 170-210 ℃ at the upper end, and the temperature at the lower end is 180-220 ℃.
As a preferred embodiment: and a plurality of groups of main wire grooves, branch wire grooves and glue injection die cavities are arranged in the upper die and the lower die side by side.
As a preferred embodiment: the wire grooves in the die cavity are transversely connected with the plurality of glue injection die cavities.
Compared with the prior art, the invention has obvious advantages and beneficial effects, in particular, the technical scheme shows that the main line sleeve and the branch line sleeve are combined by adopting the inner die at the middle gear part of the earphone wire, the outer die is formed outside the inner die in a thermal mode, the main line sleeve and the branch line sleeve are connected more tightly by combining the inner die and the outer die, the hanging weight performance of 3KG in the empty pipe state of the middle gear part of the earphone wire is met, the quality of the earphone wire is improved, the overall tensile performance of the earphone wire is improved, and the situation that the earphone wire is easily broken is effectively avoided.
In order to more clearly illustrate the structural features and efficacy of the present invention, a detailed description thereof will be given below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of a middle gear structure of the present invention;
FIG. 2 is a schematic view of a triangle fork structure according to the present invention;
FIG. 3 is a schematic diagram of the structure of the upper and lower molds of the middle mold of the present invention;
FIG. 4 is a schematic view of a bushing of the present invention;
FIG. 5 is a schematic view of a triangle fork of the present invention;
FIG. 6 is a schematic view of a further cross-triangle fork of the present invention;
FIG. 7 is a schematic view of a molding inner mold according to the present invention;
FIG. 8 is a schematic view of a molding outer mold of the present invention.
FIG. 9 is a schematic top view of an outer mold of the present invention;
FIG. 10 is a schematic side view of an outer mold of the present invention;
FIG. 11 is a left side view of the outer mold of the present invention;
FIG. 12 is a right side view of the outer mold of the present invention.
The attached drawings are used for identifying and describing:
10. main line sleeve 20, branch line sleeve
30. Core wire 40, triangle fork
41. Base 42, first extension arm
43. Second extension arm 50, internal mold
60. External mold 70 and mold
71. Upper die 72 and lower die
73. Main wire slot 74 and branch wire slot
75. Die cavity 76, glue injection groove
77. Wire slot in die cavity
a. Overall length of outer mold b, length of front half of outer mold
c. Outer die front end width d, outer die rear end width
e. Integral thickness f and aperture of outer die
g. Pitch h and aperture.
Detailed Description
The invention discloses a middle gear part of an earphone wire, a processing mould and a processing method thereof, as shown in fig. 1 to 12, wherein:
the middle part of the earphone wire comprises a main wire sleeve 10, two branch wire sleeves 20, a core wire 30, a triangular fork 40, an inner die 50 and an outer die 60, wherein the core wire 30 penetrates into the two branch wire sleeves 20 correspondingly after penetrating through the main wire sleeve 10, and the main wire sleeve 10 is gathered and combined with the two branch wire sleeves 20; the triangle fork 40 comprises a base 41, a first extension arm 42 integrally extending upwards from the base 41, and two second extension arms 43 integrally extending downwards from the base 41, wherein the first extension arm 42 extends into the main wire sleeve 10, and the two second extension arms 43 correspondingly extend into the two branch wire sleeves 20 respectively; the inner mold 50 is coated at the joint of the main line sleeve 10 and the two branch line sleeves 20; the outer mold 60 is wrapped around the inner mold 50.
The middle mold 70 for processing the middle part of the earphone line comprises an upper mold 71 and a lower mold 72 which have the same internal structure and are mutually matched in a vertically separable way, a main line groove 73 for accommodating the main line sleeve 10 and a branch line groove 74 for accommodating the branch line sleeve 20 are respectively arranged in the upper mold 71 and the lower mold 72, a mold cavity 75 for injecting the inner mold 50 and the outer mold 60 is arranged at the joint of the main line groove 73 and the branch line groove 74, glue injection grooves 76 communicated with the mold cavity 75 are respectively arranged at two sides of the mold cavity 75, and a mold cavity middle wire groove 77 for aligning the main line sleeve 10 and the branch line sleeve 20 is transversely arranged at the joint of the main line groove 73 and the branch line groove 74.
The processing method for manufacturing the middle gear part of the earphone wire by adopting the middle gear die comprises the following processing steps:
s1, peeling the earphone wire by using a hot peeling machine at 765mm-767mm from the earphone wire plug, exposing an internal core wire, wherein the part not exposing the core wire is a main line part, and the outer skin of the main line part is a main line sleeve 10;
during the operation of this step, care should be taken: 1. the wire body can not be pulled by force from 765+/-2 mm of the outer die of the plug so as to prevent the wire from being twisted; 2. the wire rod is rotated to the hot peeling machine from 765+/-2 mm for one circle to gently pull off the wire skin; 3. the core wire cannot be cut off, the skin is rolled, the wire is scalded, and the adverse phenomena such as size and length and the like cannot occur during peeling.
S2, cutting the bulletproof wire in a middle grade, arching the core wire at the peeling opening of the earphone wire, blowing the bulletproof wire to one side by adopting a blowing jig, cutting off the bulletproof wire at the peeling opening by using scissors, and axially pumping the bulletproof wire out of the core wire bundle at the tail end of the exposed core wire;
during the operation of this step, care should be taken: 1. attention is paid to the fact that the bulletproof wire needs to be sheared cleanly and the core wire cannot be sheared; 2. the core wire cannot deform, bend and break the copper wire when separating the bulletproof wire from the pull bulletproof wire.
S3, threading the sleeve, preparing two branch line sleeves 20, dividing the core wires exposed in the step S2 into two strands from the root, threading each strand of core wires into one branch line sleeve 20 correspondingly, pulling the two branch line sleeves 20 to be flush with the tail end of the main line sleeve 10 in the step S1, bending the tail end of the core wire 30, and preventing the branch line sleeve 20 from falling off from the core wire 30;
during the operation of this step, care should be taken: 1. the core wires 30 can not be crossed, and the green core wires penetrate through a hollow pipe with the inner diameter of 0.9 and the length of 410 mm; the inner diameter of the winding core wire is 1.10, and the length of the winding core wire is 210 mm; 2. the branch line sleeve must be penetrated in place, and copper wires cannot leak outside; 3. the outer wall of the hollow tube cannot be provided with a bulge, and the core wire 30 is twisted and the like.
S4, forming the triangular fork 40 by adopting a vertical injection molding machine, checking whether the formed triangular fork 40 has glue shortage, wherein the formed triangular fork 40 comprises a base 41, a first extension arm 42 integrally extending upwards from the base 41 and two second extension arms 43 integrally extending downwards from the base 41, and the first extension arm 42 and the two second extension arms 43 form a fork-shaped structure;
during the operation of this step, care should be taken: 1. the temperature of the forming machine is 190+/-20 ℃ at the upper end and 200+/-20 ℃ at the lower end; 2. the deformation caused by irregular die taking is not needed to be noticed during die taking; 3. note that no adhesive failure or deformation is possible; 4. the injection molding length and the appearance of the plug are required to be confirmed by first inspection, and an operator self-inspects (5-10 PCS is extracted from every 100 PCS), so that the abnormal condition is timely adjusted; 5. all materials need to meet the environmental requirements of ROHS, halogen-free and CP 65; 6. in the process of forming the triangular fork, the forming temperature is 170-210 ℃ at the upper end, and 180-220 ℃ at the lower end.
S5, threading the triangular fork 40, extending the first extension arm 42 of the triangular fork 40 from the peeling opening into the main line sleeve 10, and correspondingly extending the two second extension arms 43 into the two branch line sleeves 20 respectively;
during the operation of this step, care should be taken: 1. after the triangle fork 40 is assembled, if bulletproof flying wires exist, the triangle fork is trimmed; 2. after the triangle fork 40 is assembled, the blank pipe wire is gently cared by hands, the blank pipe wire cannot deform, twist, bulge and other adverse phenomena, and the blank pipe is taken down to be penetrated again when the blank pipe is found; 3. the triangle fork 40 must be threaded into place; 4. the phenomenon of wearing less is not allowed; 5. the triangular fork 40 can not have the phenomenon of bulging after being put through.
S6, forming a middle-grade internal mold 50, namely placing a main line sleeve 10 into a main line groove 73, placing two branch line sleeves 20 into branch line grooves 74 respectively, placing the joint of the main line sleeve 10 and the branch line sleeve 20 into a mold cavity 75, placing the joint of the main line sleeve 10 and the branch line sleeve 20 on a mold cavity middle line groove 77, after the upper mold 71 and the lower mold 72 are assembled, injecting glue into the mold cavity 75 through a glue injection groove 76, forming the internal mold 50 outside the joint of the main line sleeve 10 and the branch line sleeve 20 after heating and forming, and taking out a middle-grade part after forming the internal mold 50;
during the operation of this step, care should be taken: 1. when the die is taken out, the die is taken out vertically, so that wire scratches caused by irregular die taking are avoided; 2. the inner mold 50 is adhered to the main line sleeve 10 and the branch line sleeve 20 without any gap; 3. before forming, wiping the sewage 10mm before and after the three fork, and wiping 20 strips for forming 20 strips; 4. when the wires are buried, the wires are correctly buried along the wire holes, and no wire pressing, no adhesive shortage or wire punching and the like are required; 5. the molding temperature is higher, and a cooling water plate is used; 6. after the inner mold 50 is molded, cleaning the outer wall of the inner mold 50; 7. in the molding process of the inner mold 50, the molding temperature is as follows: upper section 215-235 degrees and lower section 220-240 degrees.
S7, forming a middle-grade outer die 60, namely placing the main line sleeve 10 into a main line groove 73, placing two branch line sleeves 20 into branch line grooves respectively, placing an inner die 50 at the joint of the main line sleeve 10 and the branch line sleeve 20 into a die cavity 75, after the upper die 71 and the lower die 72 are closed, injecting glue into the die cavity 75 through a glue injection groove 76, heating and forming, and forming an outer die 60 (the inner die 50 and the outer die 60 are made of the same material, such as TPE, to meet the requirement of middle-grade handfeel flexibility) which is the same as that of the inner die 50 outside the main line sleeve 10, the branch line sleeve 20 and the inner die 50, wherein the outer die 60 is coated outside the whole inner die 50, and taking out a middle-grade part after forming the outer die 60;
during the operation of this step, care should be taken: 1. when the die is taken out, the die is taken out vertically, so that wire scratches caused by irregular die taking are avoided; 2. the outer die and the inner die are adhered to each other without gaps; 3. before forming, wiping the sewage 10mm before and after the three fork, and wiping 20 strips for forming 20 strips; 4. when the wires are buried, the wires are correctly buried along the wire holes, and no wire pressing, no adhesive shortage or wire punching and the like are required; 5. the water gap of the internal mold must be cut clean before molding; 6. the molding temperature is higher, and a cooling water plate is used; 7. in the process of forming the outer die, the forming temperature is as follows: the upper section is 230-250 degrees and the lower section is 235-255 degrees.
The outer mold 60 has a dimension as shown in fig. 9 to 12, the outer mold 60 has an overall length a of 29.9 to 30.1mm, a front half length b of 16.5mm, a front end width c of 18.8 to 19mm, a rear end width d of 10.55 to 10.75mm, an overall thickness e of 11 to 11.2mm, two apertures f for accommodating the branch line bushings 20 of 4.8mm, a pitch g of 3 to 3.3mm, and an aperture h for accommodating the main line bushings 10 of 6mm.
S8, appearance detection, namely, rotating the middle gear part by 360 degrees, checking whether the outer die 60 body has bad phenomena such as material shortage, glue flushing, shrinkage and the like, calling out bad products, and enabling the good products to enter the next workstation.
During the operation of this step, care should be taken: 1. trimming the feed inlet by using nail scissors; 2. the outer mold 60 and the wire skin are adhered to each other without gaps; 3. the glue inlet point cannot be provided with a pit; 4. the hollow tube with four core wires at the tail end cannot be provided with an indentation (the outer wall of the hollow tube cannot be provided with defects such as breakage, core wire exposure and the like); 5. the good products and the defective products are placed separately and marked clearly; 6. the height of the water gap can not exceed 0.1mm.
The invention is designed with the key that the main line sleeve and the branch line sleeve are combined by adopting the inner die at the middle gear part of the earphone wire, and the outer die is formed outside the inner die in a hot mode, so that the main line sleeve and the branch line sleeve are connected more tightly by utilizing the combination of the inner die and the outer die, the hanging weight performance of 3KG in the empty pipe state of the middle gear part of the earphone wire is met, the quality of the earphone wire is improved, the overall tensile performance of the earphone wire is improved, and the situation that the earphone wire is easily pulled off is effectively avoided.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (7)
1. A processing method for manufacturing a middle gear part of an earphone wire by adopting a middle gear die is characterized by comprising the following steps of:
the middle gear part of the earphone wire comprises a main wire sleeve, two branch wire sleeves, a core wire, a triangular fork, an inner die and an outer die, wherein the core wire penetrates into the two branch wire sleeves correspondingly after passing through the main wire sleeve, and the main wire sleeve is gathered and combined with the two branch wire sleeves; the triangle fork comprises a base part, a first extension arm and two second extension arms, wherein the first extension arm is integrally extended upwards from the base part, the two second extension arms are integrally extended downwards from the base part, the first extension arm extends into the main line sleeve, and the two second extension arms correspondingly extend into the two branch line sleeves respectively; the internal mold is coated at the joint of the main line sleeve and the two branch line sleeves; the outer mold is coated outside the inner mold;
the middle-grade die comprises an upper die and a lower die which have the same internal structure and are matched up and down in a separable manner, wherein a main wire groove for accommodating the main wire sleeve and a branch wire groove for accommodating the branch wire sleeve are respectively arranged in the upper die and the lower die, a die cavity for injecting an inner die and an outer die is arranged at the joint of the main wire groove and the branch wire groove, glue injection grooves communicated with the die cavity are respectively arranged at two sides of the die cavity, and a die cavity middle wire groove for enabling the main wire sleeve and the branch wire sleeve to be aligned in order is transversely arranged at the joint of the main wire groove and the branch wire groove;
the processing method comprises the following processing steps:
s1, peeling the earphone wire by using a hot peeling machine at 765mm-767mm from the earphone wire plug, wherein the part of the earphone wire, which is not exposed by the hot peeling machine, is a main line part, and the outer skin of the main line part is a main line sleeve;
s2, cutting the bulletproof wire in a middle grade, arching the core wire at the peeling opening of the earphone wire, blowing the bulletproof wire to one side by adopting a blowing jig, cutting off the bulletproof wire at the peeling opening by using scissors, and axially pumping the bulletproof wire out of the core wire bundle at the tail end of the exposed core wire;
s3, threading the sleeve, preparing two branch line sleeves, dividing the core wire exposed in the step S2 into two strands from the root, threading each strand of core wire into one branch line sleeve correspondingly, pulling the two branch line sleeves to be flush with the tail end of the main line sleeve in the step S1, and bending the tail end of the core wire to prevent the branch line sleeve from falling off from the core wire;
s4, forming the triangular fork by adopting a vertical injection molding machine, and checking whether the formed triangular fork has a glue shortage, wherein the formed triangular fork comprises a base part, a first extension arm integrally extending upwards from the base part and two second extension arms integrally extending downwards from the base part, and the first extension arm and the two second extension arms form a fork-shaped structure;
s5, penetrating through the triangular fork, enabling a first extension arm of the triangular fork to extend into the main line sleeve from the peeling port, and enabling two second extension arms to extend into the two branch line sleeves correspondingly;
s6, forming a middle-grade internal mold, namely placing a main line sleeve into a main line groove, placing two branch line sleeves into branch line grooves respectively, placing the joint of the main line sleeve and the branch line sleeve into a mold cavity, placing the joint of the main line sleeve and the branch line sleeve on the mold cavity in the mold cavity, after closing the upper mold and the lower mold, injecting glue into the mold cavity through a glue injection groove, forming the internal mold outside the joint of the main line sleeve and the branch line sleeve after heating and forming, and taking out the middle-grade part after forming the internal mold;
s7, forming a middle-grade outer mold, namely placing the main line sleeve into the main line groove, respectively placing the two branch line sleeves into the branch line grooves, placing an inner mold at the joint of the main line sleeve and the branch line sleeve into a mold cavity, after the upper mold and the lower mold are closed, injecting glue into the mold cavity by the glue injection groove, forming an outer mold which is the same as the inner mold in material outside the main line sleeve, the branch line sleeve and the inner mold after heating forming, wrapping the outer mold outside the whole inner mold, and taking out a middle-grade part after forming the outer mold;
s8, appearance detection, namely, rotating the middle gear part by 360 degrees, checking whether the outer die body has defective phenomena of material shortage, glue flushing and shrinkage, calling out defective products, and enabling the defective products to enter the next working station.
2. The processing method for manufacturing the middle part of the earphone line by adopting the middle mould according to claim 1, which is characterized in that: in the step S6, after the inner mold is formed, cleaning treatment is performed on the outer wall of the inner mold.
3. The processing method for manufacturing the middle part of the earphone line by adopting the middle mould according to claim 1, which is characterized in that: in the step S6, in the inner mold forming process, the forming temperature is: upper section 215-235 degrees and lower section 220-240 degrees.
4. The processing method for manufacturing the middle part of the earphone line by adopting the middle mould according to claim 1, which is characterized in that: in the step S7, during the process of forming the outer mold, the forming temperature is as follows: the upper section is 230-250 degrees and the lower section is 235-255 degrees.
5. The processing method for manufacturing the middle part of the earphone line by adopting the middle mould according to claim 1, which is characterized in that: in the step S4, in the process of forming the triangular fork, the forming temperature is 170-210 ℃ at the upper end, and the temperature at the lower end is 180-220 ℃.
6. The processing method for manufacturing the middle part of the earphone line by adopting the middle mould according to claim 1, which is characterized in that: and a plurality of groups of main wire grooves, branch wire grooves and glue injection die cavities are arranged in the upper die and the lower die side by side.
7. The processing method for manufacturing the middle part of the earphone line by adopting the middle mould according to claim 6, which is characterized in that: the wire grooves in the die cavity are transversely connected with the plurality of glue injection die cavities.
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| JP7447499B2 (en) * | 2020-01-21 | 2024-03-12 | 住友電装株式会社 | wiring parts |
| CN111873306B (en) * | 2020-07-27 | 2022-07-01 | 广东朝阳电子科技股份有限公司 | Method for manufacturing ear-hanging earphone wire |
| CN111933360B (en) * | 2020-07-31 | 2021-10-22 | 广东朝阳电子科技股份有限公司 | Method for manufacturing earphone wire with SR buckle |
| CN113205915B (en) * | 2021-04-30 | 2022-08-12 | 上犹天辉科技有限公司 | Signal transmission line and forming process thereof |
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| KR20080095406A (en) * | 2007-04-24 | 2008-10-29 | 조계숙 | Earphone tip |
| CN202979244U (en) * | 2012-12-05 | 2013-06-05 | 中山市天键电声有限公司 | Novel earphone cord midline shift structure |
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| CN205987300U (en) * | 2016-09-06 | 2017-02-22 | 歌尔股份有限公司 | Earphone cord and be equipped with earphone of this earphone cord |
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| KR20080095406A (en) * | 2007-04-24 | 2008-10-29 | 조계숙 | Earphone tip |
| CN202979244U (en) * | 2012-12-05 | 2013-06-05 | 中山市天键电声有限公司 | Novel earphone cord midline shift structure |
| CN204793386U (en) * | 2015-06-24 | 2015-11-18 | 厦门立琪电子有限公司 | Wire rod seal structure |
| CN106142442A (en) * | 2016-08-29 | 2016-11-23 | 重庆夏朗科技有限公司 | A kind of fabrication and processing method of earphone wire |
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