CN112653973B - Voice coil winding method - Google Patents
Voice coil winding method Download PDFInfo
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- CN112653973B CN112653973B CN202011561872.7A CN202011561872A CN112653973B CN 112653973 B CN112653973 B CN 112653973B CN 202011561872 A CN202011561872 A CN 202011561872A CN 112653973 B CN112653973 B CN 112653973B
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
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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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Abstract
The invention provides a voice coil winding method, wherein an enameled wire is wound into a voice coil through a winding tool, and the inlet wire and the outlet wire of the voice coil formed by winding are flush with the surface of a voice coil body. Compared with the prior art, the voice coil formed by winding by the voice coil winding method can effectively reduce AMS reliability inlet wire root disconnection and high-order vibration risk and the overall height of the voice coil.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of wire winding, in particular to a voice coil winding method.
[ background of the invention ]
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. Electroacoustic transducers for sound-electricity conversion are widely applied to smart mobile devices such as mobile phones at present.
The electroacoustic transducer comprises a voice coil formed by winding a single enameled wire, and the voice coil comprises a voice coil body, an incoming wire and an outgoing wire, wherein the incoming wire and the outgoing wire extend out of the voice coil body. However, the root of inlet wire among the correlation technique is in the inboard of voice coil body, and the inlet wire needs to span the wall thickness of whole voice coil body and extend to the voice coil body outside, and it must lead to the inlet wire to have some meeting outstanding in voice coil body lateral wall at voice coil body within range like this to can lead to the voice coil to have the inlet wire to exceed voice coil body surface, AMS reliability inlet wire root broken string and the high scheduling problem of vibration.
Therefore, there is a need to provide a new method for winding a voice coil to solve the above-mentioned problems.
[ summary of the invention ]
The invention aims to provide a voice coil winding method, and the voice coil formed by winding the voice coil winding method can effectively reduce AMS reliability incoming wire root breakage, high-order vibration risk and the overall height of the voice coil.
In order to achieve the purpose, the invention provides a voice coil winding method, an enameled wire is wound into a voice coil through a winding tool, the winding tool comprises a mandrel, an operating disc and a wire guide plate which are sleeved on the mandrel and can synchronously rotate along with the mandrel, a wire arrangement plate which is arranged at an interval with the mandrel and can move along the axial direction of the mandrel, and an auxiliary wire clamp which is arranged at an interval with the mandrel and can move along the axial direction and the radial direction of the mandrel, a first wire clamp, a second wire clamp and a third wire clamp which are arranged at an interval are fixedly arranged on the operating disc, and the wire guide plate and the mandrel can generate relative displacement along the axial direction of the mandrel; the voice coil winding method comprises the following steps:
leading out a wire inlet end of the enameled wire from the wire arranging plate and clamping the wire inlet end of the enameled wire to the first wire clamp;
the mandrel rotates for a preset angle along a first direction to store a storage enameled wire with a preset length;
the mandrel rotates along the first direction, the wire arranging plate moves along the axial direction of the mandrel according to the rotating speed of the mandrel, so that N layers of coil layers are wound on the mandrel, each layer of coil layer is wound into a multi-turn structure, and N is a positive integer greater than 1;
taking out the wire inlet end of the enameled wire from the first wire clamp and clamping the wire inlet end of the enameled wire to the auxiliary wire clamp;
the mandrel and the auxiliary clamp are rotated by the preset angle in a second direction, so that the storage enameled wire is untied;
the mandrel and the wire guide plate are relatively displaced so that a preset distance is reserved between the N layers of coil layers and the wire guide plate;
the mandrel rotates along the second direction, and the auxiliary wire clamp moves along the axial direction of the mandrel according to the rotation of the mandrel, so that the storage enameled wires are arranged between the N layers of coil layers and the wire guide plate in a circle-by-layer arrangement mode;
taking out the wire inlet end of the enameled wire from the auxiliary wire clamp and clamping the wire inlet end of the enameled wire to the second wire clamp;
the mandrel rotates along the first direction, and the wire arranging plate moves along the axial direction of the mandrel according to the rotating speed of the mandrel so as to wind the residual winding turns of the voice coil;
clamping the outlet end of the enameled wire to the third wire clamp;
wherein one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction.
Preferably, N is an even number, and a sum of winding turns of the nth layer of the coil layer and winding turns of the (N-1) th layer of the coil layer is not less than N +1, where the nth layer of the coil layer is farther away from an axis of the voice coil than the (N-1) th layer of the coil layer.
Preferably, N is an odd number, and the number of winding turns of the coil layer of the nth layer is not less than N, wherein the coil layer of the nth layer is farther away from the axis of the voice coil than the coil layer of the (N-1) th layer.
Preferably, the voice coil has an N-layer structure, and the number of winding turns of each layer of the layer structure is the same.
Preferably, the number of winding turns of each of the coil layers is the same.
Preferably, the number of winding turns of the coil layer of the nth layer is less than that of the coil layer of the (N-1) th layer.
Preferably, the voice coil has a layer structure of N layers, the number of winding turns of the layer structure of the mth layer is less than that of the layer structure of the (m-1) th layer, and the layer structure of the mth layer is far away from the axis of the voice coil relative to the layer structure of the (m-1) th layer, wherein m is greater than or equal to 2 and is less than or equal to N, and N is an integer.
Preferably, the voice coil has a layer structure of N layers, the number of winding turns of the layer structure of the m-1 th layer is equal to the number of winding turns of the layer structure of the m +1 th layer, the number of winding turns of the layer structure of the m-1 th layer is less than the number of winding turns of the layer structure of the m th layer is equal to 1, wherein m is greater than or equal to 2 and less than or equal to N, N is an integer, and m is an even number.
Preferably, the core of the enameled wire is made of any one of a copper wire, a copper-clad aluminum wire and an alloy wire.
Preferably, the cross-sectional shape of the enamel wire is circular or rectangular.
Preferably, the enameled wire is a hot-melt enameled wire; and winding the enameled wire at a preset ambient temperature.
Compared with the prior art, the voice coil winding method can wind the incoming wire and the outgoing wire of the voice coil to be flush with the surface of the voice coil body, so that the wire breakage and high-order vibration risks of the voice coil can be effectively reduced, and the overall height of the voice coil can be reduced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a front view of a winding tool of the present invention;
FIG. 2 is a top view of the winding tool of the present invention;
FIG. 3 is a schematic structural diagram of a voice coil wound by the voice coil winding method of the present invention;
FIG. 4 is a schematic structural diagram of an enameled wire wound on a mandrel to form N coil layers;
fig. 5 is a schematic view of a wound storage enameled wire.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The voice coil formed by the voice coil winding method can be applied to electroacoustic transducers (such as microphones and loudspeakers), motors and the like.
A voice coil winding method is characterized in that an enameled wire is wound into a voice coil 10 through a winding tool. The core of the enameled wire can be made of any one of a copper wire, a copper-clad aluminum wire and an alloy wire; the cross-sectional shape of the enamel wire may be circular or rectangular.
Referring to fig. 1 and 2, the winding tool includes a core shaft 1, an operation panel 2 and a wire guide plate 3 sleeved on the core shaft 1 and capable of rotating synchronously with the core shaft 1, a wire arrangement plate 4 disposed at an interval with the core shaft 1 and capable of moving along an axial direction of the core shaft 1, and an auxiliary wire clamp 5 disposed at an interval with the core shaft 1 and capable of moving along an axial direction and a radial direction of the core shaft 1, wherein the operation panel 2 is fixedly provided with a first wire clamp 6, a second wire clamp 7 and a third wire clamp 8, and the wire guide plate 3 and the core shaft 1 are capable of moving relatively along the axial direction of the core shaft 1.
Referring to fig. 3, the voice coil 10 has N layers of layer structures 101, and each layer of layer structure 101 is a multi-turn structure stacked along the axial direction of the mandrel 1.
As shown in fig. 3, the voice coil 10 has four layers of structures 101, the four layers of structures 101 are a first layer structure 10A, a second layer structure 10B, a third layer structure 10C and a fourth layer structure 10D, respectively, and an incoming line 102 and an outgoing line 103 of the voice coil 10 extend from the fourth layer structure 10D.
As shown in fig. 3, the first layer structure 10A, the second layer structure 10B, the third layer structure 10C, and the fourth layer structure 10D have the same number of windings.
It is understood that, in other embodiments, the voice coil 10 may also be configured to have a five-layer structure, a six-layer structure, an eight-layer structure, or the like; the number of winding turns of the layer structure on the mth layer is less than that of the layer structure on the (m-1) th layer, the layer structure on the mth layer is far away from the axis of the voice coil relative to the layer structure on the (m-1) th layer, wherein m is more than or equal to 2 and less than or equal to N, and N is an integer; the number of winding turns of the layer structure on the (m-1) th layer is equal to the number of winding turns of the (m +1) th layer, the number of winding turns of the layer structure on the (m-1) th layer is reduced by the number of winding turns of the layer structure on the (m) th layer is equal to 1, wherein m is not less than 2 and not more than N, N is an integer, and m is an even number.
The winding method of the voice coil 10 comprises the following steps:
and step S1, leading out the wire inlet end of the enameled wire from the wire arranging plate 4 and clamping the enameled wire on the first wire clamp 6. Specifically, the incoming end of the enamel wire may be put into the first wire clamp 6 by a robot or the like.
Step S2, the mandrel 1 rotates in the first direction by a preset angle to store a stored enameled wire with a preset length. Specifically, when the mandrel 1 rotates, the operating panel 2 and the wire guide 3 rotate along with the mandrel 1 in the first direction, so that the stored enamel wire is stored on the operating panel 2, wherein the predetermined angle depends on the length (i.e., the predetermined length) of the stored enamel wire to be stored.
Step S3, the mandrel 1 rotates along the first direction, the winding displacement plate 4 moves along the axial direction of the mandrel 1 according to the rotating speed of the mandrel 1, so that N layers of coil layers are wound on the mandrel 1, each layer of coil layer is wound into a multi-coil structure, and N is a positive integer larger than 1. As shown in fig. 4, the number of winding turns of the coil layer of the fourth layer is less than that of the coil layer of the third layer (i.e., the number of winding turns of the coil layer of the nth layer is less than that of the coil layer of the N-1 th layer), and the number of winding turns of the coil layer of the fourth layer is greater than four (i.e., when N is an even number, the sum of the number of winding turns of the coil layer of the nth layer and the number of winding turns of the coil layer of the N-1 th layer is not less than N + 1).
It is understood that in other embodiments, the number of winding turns of each coil layer may also be the same; and when N is an odd number, the winding number of the coil layer on the Nth layer is not less than N.
Step S4, the incoming end of the enameled wire is taken out from the first wire clamp 6 and clamped by the auxiliary wire clamp 5.
Step S5, the mandrel 1 and the auxiliary clamp 5 are rotated by the preset angle in a second direction, so that the storage enameled wire is unwound. Specifically, when the mandrel 1 rotates, the operating board 2 and the wire guide 3 rotate in the second direction along with the mandrel 1, so that the storage enamel wire stored on the operating board 2 is unwound.
Step S6, the mandrel 1 and the wire guide plate 3 are relatively displaced so that the N coil layers and the wire guide plate 3 have a predetermined distance therebetween.
In this embodiment, the spindle 1 is moved in a direction away from the operation panel 2 to displace the spindle 1 and the wire guide plate 3 relative to each other.
Step S7, the mandrel 1 rotates in the second direction, and the auxiliary clamp 5 moves in the axial direction of the mandrel 1 according to the rotation of the mandrel 1, so that the storage enamel wires are arranged between the N coil layers and the wire guide plate 3 in a circle-by-layer arrangement (as shown in fig. 5).
And step S8, taking out the wire inlet end of the enameled wire from the auxiliary wire clamp 5 and clamping the enameled wire to the second wire clamp 7.
Step S9, the mandrel 1 rotates along the first direction, and the wire arranging plate 4 moves along the axial direction of the mandrel 1 according to the rotating speed of the mandrel 1 so as to wind the residual winding turns of the voice coil.
And step S10, clamping the outlet end of the enameled wire to the third wire clamp 8.
Wherein one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction.
In this embodiment, the enameled wire is a hot-melt enameled wire; and winding the enameled wire at a preset ambient temperature. Specifically, the preset ambient temperature may be selected according to the insulation layer material and the processing technique of the enamel wire, and is typically selected to be 200 ℃ to 230 ℃.
It is understood that, in other embodiments, the enameled wire may also be an alcohol-melting enameled wire, and the voice coil formed by winding is extruded and shaped in an alcohol solvent environment.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (11)
1. A voice coil winding method is characterized in that an enameled wire is wound into a voice coil through a winding tool, the winding tool comprises a mandrel, an operation disc and a wire guide plate which are sleeved on the mandrel and can synchronously rotate along with the mandrel, a wire arrangement plate which is arranged at an interval with the mandrel and can move along the axial direction of the mandrel, and an auxiliary wire clamp which is arranged at an interval with the mandrel and can move along the axial direction and the radial direction of the mandrel, a first wire clamp, a second wire clamp and a third wire clamp which are arranged at an interval are fixedly arranged on the operation disc, and the wire guide plate and the mandrel can relatively displace along the axial direction of the mandrel; the voice coil winding method comprises the following steps:
leading out a wire inlet end of the enameled wire from the wire arranging plate and clamping the wire inlet end of the enameled wire to the first wire clamp;
the mandrel rotates for a preset angle along a first direction to store a storage enameled wire with a preset length;
the mandrel rotates along the first direction, the wire arranging plate moves along the axial direction of the mandrel according to the rotating speed of the mandrel, so that N layers of coil layers are wound on the mandrel, each layer of coil layer is wound into a multi-turn structure, and N is a positive integer greater than 1;
taking out the wire inlet end of the enameled wire from the first wire clamp and clamping the wire inlet end of the enameled wire to the auxiliary wire clamp;
the mandrel and the auxiliary clamp are rotated by the preset angle in a second direction, so that the storage enameled wire is untied;
the mandrel and the wire guide plate are relatively displaced so that a preset distance is reserved between the N layers of coil layers and the wire guide plate;
the mandrel rotates along the second direction, and the auxiliary wire clamp moves along the axial direction of the mandrel according to the rotation of the mandrel, so that the storage enameled wires are arranged between the N layers of coil layers and the wire guide plate in a circle-by-layer arrangement mode;
taking out the wire inlet end of the enameled wire from the auxiliary wire clamp and clamping the wire inlet end of the enameled wire to the second wire clamp;
the mandrel rotates along the first direction, and the wire arranging plate moves along the axial direction of the mandrel according to the rotating speed of the mandrel so as to wind the residual winding turns of the voice coil;
clamping the outlet end of the enameled wire to the third wire clamp;
wherein one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction.
2. The method for winding a voice coil according to claim 1, wherein N is an even number, and a sum of a number of winding turns of the coil layer of the nth layer and a number of winding turns of the coil layer of the (N-1) th layer is not less than N +1, wherein the coil layer of the nth layer is farther away from an axis of the voice coil than the coil layer of the (N-1) th layer.
3. The method for winding a voice coil according to claim 1, wherein N is an odd number, and the number of winding turns of the coil layer of the nth layer is not less than N, wherein the coil layer of the nth layer is farther away from the axis of the voice coil than the coil layer of the (N-1) th layer.
4. A method of winding a voice coil according to claim 2 or 3, wherein the voice coil has a layer structure of N layers, and the number of winding turns of each layer structure is the same.
5. The method of claim 4, wherein the number of windings of each coil layer is the same.
6. The method of claim 4, wherein the number of winding turns of the coil layer of the Nth layer is less than the number of winding turns of the coil layer of the (N-1) th layer.
7. The method for winding a voice coil according to claim 1, wherein the voice coil has an N-layer structure, the number of winding turns of the m-th layer of the layer structure is less than that of the m-1-th layer of the layer structure, and the m-th layer of the layer structure is farther away from the axis of the voice coil than the m-1-th layer of the layer structure, wherein m is greater than or equal to 2 and less than or equal to N, and N is an integer.
8. The method for winding a voice coil according to claim 1, wherein the voice coil has an N-layer structure, the number of winding turns of the m-1 th layer structure is equal to the number of winding turns of the m +1 th layer structure, the number of winding turns of the m-1 th layer structure minus the number of winding turns of the m-th layer structure is equal to 1, wherein m is greater than or equal to 2 and less than or equal to N, N is an integer, and m is an even number.
9. The method for winding a voice coil according to claim 1, wherein the core of the enameled wire is made of any one of a copper wire, a copper-clad aluminum wire and an alloy wire.
10. The method for winding a voice coil according to claim 1, wherein the cross-sectional shape of the enameled wire is circular or rectangular.
11. The method for winding a voice coil according to claim 1, wherein the enameled wire is a hot-melt enameled wire; and winding the enameled wire at a preset ambient temperature.
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| CN202011561872.7A CN112653973B (en) | 2020-12-25 | 2020-12-25 | Voice coil winding method |
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| CN202011561872.7A CN112653973B (en) | 2020-12-25 | 2020-12-25 | Voice coil winding method |
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| CN112653973B true CN112653973B (en) | 2022-01-07 |
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