CN111294720B - Voice coil assembly, manufacturing method, loudspeaker, winding equipment and additional structure thereof - Google Patents
Voice coil assembly, manufacturing method, loudspeaker, winding equipment and additional structure thereof Download PDFInfo
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- CN111294720B CN111294720B CN201910673868.0A CN201910673868A CN111294720B CN 111294720 B CN111294720 B CN 111294720B CN 201910673868 A CN201910673868 A CN 201910673868A CN 111294720 B CN111294720 B CN 111294720B
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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
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
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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
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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
- H04R9/06—Loudspeakers
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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
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The embodiment of the invention provides a voice coil assembly, a manufacturing method, a loudspeaker, winding equipment and an additional structure thereof, wherein the voice coil assembly comprises at least two voice coils which are combined in a self-adhesive mode; the winding equipment comprises a winding machine, the winding machine comprises a winding device, the winding device comprises a mandrel, and the winding equipment further comprises an additional structure matched with the winding device and used for winding a second voice coil on the mandrel of the winding machine wound with a first voice coil to form a self-adhesive gluing voice coil combination. Utilize aforementioned scheme, can save and beat the step of gluing for ordinary mold insert can satisfy the use, and the high uniformity of voice coil loudspeaker voice coil is good moreover, and the voice coil loudspeaker voice coil concentricity is high, and the beat accelerates, easily realizes the volume production.
Description
Technical Field
The invention relates to the field of loudspeakers, in particular to a voice coil assembly, a manufacturing method, a loudspeaker, winding equipment and an additional structure of the voice coil assembly.
Background
The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and the voice coil is stressed to move in a magnetic field under the power-on state, so that the vibrating diaphragm is driven to vibrate to generate sound. The prior art loudspeaker uses the coil of the loudspeaker to sense the induced electrical signal in the sensor operation mode and processes the sensor signal based on a mathematical model of the loudspeaker to obtain position information of the voice coil. A disadvantage of these solutions is that no dynamic loudspeaker parameters are available.
Two coils are connected in series, the coils reciprocate in the magnetic gap after alternating current is conducted, induced electromotive force is generated inside the coils after the coils cut magnetic lines, and the bias of the two coils in the magnetic gap and the displacement of the coils can be monitored in real time by monitoring the induced current in the two coils. Thus, the position signal of the coil is output at the same time of outputting the sound signal. The system can then control the electro-acoustic transducer system by adjusting the input voltage, while the offset of the coil arrangement from the magnetic zero position can be detected and corrected.
In the prior art, the double coils are independently wound and then glued, so that double voice coils are realized.
Disclosure of Invention
The inventor finds that the existing manufacturing method of the double voice coil has high requirements on the gluing track and the width of glue for gluing, a special insert is needed, the insert is easy to pollute, the overall height consistency of the voice coil is poor, and the mass production is difficult to realize in the working process.
The embodiment of the invention provides a voice coil combination, wherein the voice coil combination comprises at least two voice coils which are combined in a self-adhesive mode.
In one embodiment, the voice coil assembly includes a first voice coil and a second voice coil which are arranged up and down, the first voice coil has a first combining surface located at the lowermost end, the second voice coil has a second combining surface located at the upper end, and the first combining surface and the second combining surface are combined in a self-adhesion manner.
In one embodiment, the first bonding surface is a wired surface of a first voice coil, and the second bonding surface is a wireless surface of a second voice coil; or
The first combination surface is a wireless surface of the first voice coil, and the second combination surface is a wired surface of the second voice coil; or
The first combination surface is a wireless surface of the first voice coil, and the second combination surface is a wireless surface of the second voice coil; or
The first combination surface is a wired surface of the first voice coil, and the second combination surface is a wired surface of the second voice coil;
embodiments of the present invention also provide an additional structure of a winding apparatus for realizing a voice coil assembly, the additional structure comprising cooperating means for winding a second voice coil on a bobbin on which a first voice coil is wound to form a self-adhesive glue voice coil assembly.
In one embodiment, the cooperating means comprises a second voice coil incoming wire clamp and a second voice coil outgoing wire clamp for the lead when winding the second voice coil.
In one embodiment, the mandrel is sleeved with a wire guide plate, the wire guide plate is sleeved with a guide sleeve capable of rotating along with the wire guide plate, and the guide sleeve and the guide plate can be arranged in a relatively axially movable manner; and the part of the mandrel, which protrudes out of the wire guide plate and the guide sleeve, is used for winding the voice coil group.
In one embodiment, the guide sleeve is axially movably sleeved on the wire guide plate through a plurality of ball plungers, a concave pit is arranged on the wire guide plate, and the head of each ball plunger can be positioned in the concave pit.
In one embodiment, the cooperation device comprises a guide sleeve moving mechanism, the guide sleeve moving mechanism comprises an air cylinder fixed on the table-board of the winding machine and a guide sleeve stirring piece arranged on the air cylinder, and one end of the guide sleeve stirring piece, which faces the guide sleeve, is provided with a guide sleeve clamping groove.
In one embodiment, the cooperating means includes an upper winding cooperating portion, the upper winding cooperating portion includes an upper wire guiding plate, the upper wire guiding plate has an annular boss, an upper disc is disposed on the annular boss, and the second voice coil wire inlet clamp and the second voice coil wire outlet clamp are disposed on the upper disc.
In one embodiment, the cooperation device further comprises an auxiliary mandrel, and an upper baffle and a lower baffle which are respectively arranged at the upper end and the lower end of the auxiliary mandrel.
The embodiment of the invention also provides a winding device for realizing the combination of the voice coil, which comprises a winding machine, wherein the winding machine comprises a winding device, the winding device comprises a mandrel, and the winding device further comprises the additional structure matched with the winding device.
In one embodiment, the core shaft is sleeved with a wire guide plate, the wire guide plate is provided with an annular boss, a disc is arranged on the annular boss, and a first voice coil wire inlet clamp and a first voice coil wire outlet clamp which are used for leading wires when the first voice coil is wound are arranged on the disc.
In an embodiment, the disc is further provided with a second voice coil wire inlet clamp and a second voice coil wire outlet clamp, wherein the second voice coil wire inlet clamp and the second voice coil wire outlet clamp are used for winding a second voice coil.
In one embodiment, the outlet wire clamp is a spring wire clamp type outlet wire clamp.
The embodiment of the invention also provides a manufacturing method of the voice coil combination, which comprises the following steps:
at least two voice coils which are arranged up and down are wound on a mandrel.
In one embodiment, the method comprises:
winding a first voice coil: winding a first voice coil on a mandrel;
winding a second voice coil: and winding a second voice coil on the mandrel close to the wound first voice coil.
In one embodiment, the method further comprises: and (3) self-adhering the two adjacent surfaces of the first voice coil and the second voice coil to form a self-adhered voice coil combination.
In one embodiment, the second voice coil is wound above the first voice coil.
In an embodiment, after the winding of the first voice coil, the winding of the first voice coil further includes displacing the wound first voice coil downward so as to wind the second voice coil.
In one embodiment, the winding apparatus includes the above additional structure having the relatively movable guide sleeve engaged with the wire guide plate, and the step of winding the second voice coil includes:
the cylinder advances to clamp the guide sleeve;
descending the wire guide plate;
the cylinder retreats;
winding a second voice coil;
the cylinder advances to clamp the guide sleeve;
lifting and resetting the wire guide plate;
the cylinder retreats and resets.
In one embodiment, the winding apparatus includes an additional structure including an upper winding assisting portion as described above, and the step of winding the second voice coil includes:
a preparation step of moving the upper winding assisting part downward to the voice coil winding corresponding to the lower winding part of the winding machine including the core shaft
Above the manufacturing position, a position for winding the voice coil assembly is formed between the upper lead plate and the lead plate of the winding machine;
winding a second voice coil;
and a resetting step, wherein the upper winding assists partial resetting.
In one embodiment, a spooling device includes additional structure that utilizes upper and lower baffles, the method comprising:
sleeving the wound first voice coil and the wound second voice coil on the auxiliary mandrel, so that the wired surface of the first voice coil is contacted with the wired surface of the second voice coil;
and melting the wired surface of the first voice coil and the wired surface of the second voice coil by heating, and applying pressure to the first voice coil and the second voice coil through the upper baffle and/or the lower baffle to enable the wired surface of the first voice coil and the wired surface of the second voice coil to be glued in a self-adhesive mode.
Embodiments of the present invention also provide a speaker having the voice coil combination described in the above embodiments.
The invention has the beneficial effects that:
by utilizing the scheme of the embodiment of the invention, the step of gluing can be omitted, so that the common insert can be used satisfactorily, the voice coil has high consistency, the concentricity of the voice coil is extremely high, the rhythm is accelerated, and the mass production is easy to realize.
In addition, the invention can greatly reduce the production cost, and the preliminary estimation is carried out by taking the equipment adopted by the inventor as an example, so that about 2/3 cost can be saved, and the method comprises the following steps:
1: the cost for modifying the line body is saved. The current winding machine can not meet the use requirement, and the wire body is slightly changed by each scheme of the invention);
2: 7 assembling stations are saved, and the assembling stations comprise 4 gluing stations and 3 subsequent stations;
3: 4 groups of gluing equipment is saved, and the price of the gluing equipment is higher;
4: a lot of CCD checks are saved, and the price of CCD equipment is higher;
5: savings require custom UV curing light sources and pre-curing point light sources.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIGS. 1A-1C are schematic structural diagrams of a voice coil assembly according to an embodiment of the invention;
FIG. 1D is a drawing test comparison of a self-adhesive voice coil assembly according to an embodiment of the present invention and a conventional glued voice coil assembly;
FIG. 2 is a schematic diagram of an embodiment of an additional structure of a winding apparatus in embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of an additional structure of a winding apparatus in embodiment 1 of the present invention;
fig. 4A, 4B, 4C and 4D are schematic structural diagrams of a wire clamp, a wire clamp and a disc mounted structure adopted in a specific embodiment of an additional structure of a winding device in embodiment 1 of the present invention;
fig. 5 is a schematic flow chart of a method for manufacturing a voice coil assembly in embodiment 1 of the present invention;
FIG. 6 is a schematic diagram of an embodiment of an additional structure of a winding apparatus in embodiment 2 of the present invention;
FIG. 7 is a schematic structural diagram of an embodiment of an additional structure of a winding apparatus in embodiment 2 of the present invention;
fig. 8 is a schematic flow chart of a method for manufacturing a voice coil assembly in embodiment 2 of the present invention;
FIG. 9 is a schematic diagram of an embodiment of an additional structure of a winding apparatus in embodiment 3 of the present invention;
fig. 10 is a flowchart illustrating a method for manufacturing a voice coil assembly in embodiment 3 of the present invention.
Detailed Description
The foregoing and other features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the embodiments in which the principles of the invention may be employed, it being understood that the invention is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
As shown in fig. 1A to 1C, an embodiment of the present invention provides a voice coil assembly, where the voice coil assembly includes at least two voice coils combined in a self-adhesive manner, and the adjacent surfaces of two adjacent voice coils are bonded into a whole due to high-temperature melting of the self-adhesive layer of the enamel wire during the winding process. Through this kind of structure, the voice coil loudspeaker voice coil combination of this embodiment is of high quality, changes fully to guarantee the audio requirement.
The voice coil is usually formed by winding an enameled wire, and the gluing of the two voice coils is realized through a self-adhesive layer of the enameled wire, namely self-adhesive gluing, which is hereinafter referred to as self-adhesive or self-adhesive gluing.
In one embodiment, the voice coil assembly is a double voice coil assembly, and includes a first voice coil 11 and a second voice coil 12 disposed up and down, the first voice coil 11 has a first combining surface 110 located at the lowest end, the second voice coil 12 has a second combining surface 120 located at the upper end, and the first combining surface 110 and the second combining surface 120 are combined by a self-adhesive manner, so as to form the double voice coil. Because this kind of two voice coils through self-adhesion veneer formation need not to beat glues, and need not to use purpose-made mold insert, consequently, the high uniformity of two voice coils that form is good, changes and forms the volume production.
Each voice coil has two end faces, and for a double-layer voice coil, the leads thereof are usually on the same end face, so that the two end faces thereof are a wired (lead) face and a wireless (lead) face, the first combining face 110 of the double-layer voice coil may be a wired face or a wireless face of the first voice coil 11, and the second combining face 120 may also be a wired face or a wireless face of the second coil 12.
Based on the above-described voice coil combination, the embodiment of the present invention further provides a speaker, where the voice coil of the speaker adopts the self-adhesive voice coil combination according to the embodiments of the present invention.
Corresponding to the voice coil assembly formed by the self-adhesive gluing method, the embodiment of the invention also provides a winding device for manufacturing the voice coil assembly, the winding device comprises a winding machine and an additional structure, the winding machine can adopt the existing machines with various models and structures, the invention is not limited, the winding machine comprises a winding device, the winding device comprises a mandrel, and the additional structure is matched with the winding device so as to wind a second voice coil 12 on the mandrel wound with the first voice coil 11.
With the winding apparatus having the additional structure, an embodiment of the present invention further provides a method for manufacturing a voice coil assembly, in which at least two voice coils arranged up and down are wound on a mandrel.
In the method, the voice coil can be wound in various modes, for example, the voice coil can be wound sequentially or simultaneously. Further, the method can further comprise self-adhering two adjacent surfaces of the first voice coil and the second voice coil to form a self-adhered voice coil combination.
Fig. 1D is a drawing illustrating a tensile test comparison of the self-adhesive dual voice coil assembly and the glue-bonded dual voice coil assembly according to the embodiment of the present invention. It can be seen that for the force required to pull the two voice coils apart after the single voice coil glue is synthesized into the double voice coil, the glue bonding force is smaller, the average value is about 22N, and the self-adhesive bonding force is larger, the average value is about 30N. Two comparisons can be seen that the self-adhesive gluing drawing force is larger than that of gluing, the average value is improved by one third, and the effect is obvious.
In order to more accurately and thoroughly understand the above-mentioned aspects of the present invention, the following describes the voice coil assembly, the manufacturing method, the winding apparatus and the additional structure in detail with reference to different embodiments.
Example 1:
as shown in fig. 1A, the present embodiment provides a voice coil assembly, specifically a dual voice coil self-adhesive assembly arranged up and down, in the dual voice coil assembly, the combination of the two is a self-adhesive combination between a wired surface and a wireless surface, specifically, the first bonding surface 110 may be a wired surface of the first voice coil 11, the second bonding surface 120 may be a wireless surface of the second voice coil 12, or the first bonding surface 110 may be a wireless surface of the first voice coil 11, and the second bonding surface 120 may be a wired surface of the second voice coil 12.
On the other hand, the shape of the voice coil may be a desired shape such as a circle, a rectangle, etc., as shown in fig. 1A, but not limited thereto, a square voice coil may be obtained by shaping the circle voice coil in fig. 1A, and since the shaping technique is a prior art in the field, it will not be described in detail here.
Corresponding to the above-mentioned dual voice coil combination structure, the embodiment of the present invention further provides an additional structure of a winding device for realizing voice coil combination, wherein the additional structure comprises a cooperating device for winding a second voice coil on a core shaft of a winding machine wound with a first voice coil to form a self-adhesive glue voice coil combination.
Please refer to fig. 2, which is a specific embodiment of the additional structure 20 of the present embodiment. The core shaft 101 of the winding machine is sleeved with a wire guide plate 210, a guide sleeve 220 capable of rotating along with the wire guide plate 210 is sleeved outside the wire guide plate 210, and the guide sleeve 220 and the wire guide plate 210 can be arranged in a relatively axial moving mode; the part of the mandrel 101 protruding out of the wire guide plate 210 and the guide sleeve 220 is used for winding the voice coil group. Before the voice coil is wound, the upper end face 211 of the wire guide plate 210 is flush with the upper end face 221 of the guide sleeve 220, and the upper end face 211 of the wire guide plate 210 can be used as a bearing face of the voice coil group.
The additional structure has at least two states, the first state corresponds to the winding of the first voice coil 11, the second state corresponds to the winding of the second voice coil 12, in this state, the wire guide plate 210 drives the mandrel 101 to move downwards for a predetermined distance, the guide sleeve 220 is fixed, and the upper end surface 221 of the guide sleeve 220 and the upper end surface of the wound first voice coil 11 are kept on the same plane.
Specifically, the mandrel 101 may drive the wire guide plate 210 and the guide sleeve 220 to rotate together, and meanwhile, the mandrel 101 may independently move downward, and when the wire guide plate 210 moves downward, the mandrel 101 may be driven to move downward together. After the first voice coil is wound according to the general steps, the wire guide plate 210 is moved downwards for a preset distance, so that the wound first voice coil 11 also moves downwards, a position is reserved for winding the second voice coil 12, then the second voice coil 12 can be wound at an original space position (above the first voice coil 11 after being moved downwards), the upper end of the first voice coil 11 can be used as a bearing part of the second voice coil for subsequent winding, and the upper end face of the guide sleeve 220 is fixed to maintain the original voice coil winding plane of the winding machine, so that the winding plane is defined, and a guarantee is provided for smooth winding of the second voice coil 12.
In one embodiment, the guide sleeve 220 is sleeved on the wire guide plate 210 through a plurality of ball plungers 230, the wire guide plate 210 is provided with recesses 213, and the heads of the ball plungers 230 can be positioned in the corresponding recesses 213. In order to be convenient for adapting to the height of the voice coil needing to be wound, the axial interval between the ball plunger 230 and the concave pit 213 can be matched with the height of a single voice coil, namely, the axial interval between two adjacent ball plungers 230 is matched with the height of the single voice coil, and the axial interval between two adjacent concave pits 213 is matched with the height of the single voice coil.
Fig. 3 shows a schematic view of a guide sleeve moving mechanism, which is an embodiment of the above-mentioned cooperating device, and the cooperating device includes the guide sleeve moving mechanism. As shown in the figure, the guide sleeve moving mechanism is symmetrically arranged at the disc 103 of the winding device corresponding to the guide sleeve 220. Specifically, the guide sleeve moving mechanism comprises an air cylinder 225 fixed on a table top (not shown in the figure) of the winding machine and a guide sleeve stirring piece 226 arranged on the air cylinder 225, one end of the guide sleeve stirring piece 226 facing the guide sleeve 220 is provided with a guide sleeve clamping groove 2261, the guide sleeve 220 is provided with a radial protrusion 2201, and the guide sleeve clamping groove 2261 clamps the guide sleeve 220 by clamping the radial protrusion 2201.
After the first voice coil 11 is wound, the cylinder 225 moves forward to the guide sleeve 220 to clamp the guide sleeve 220, at this time, the wire guide plate 210 moves downwards, and the mandrel 101 wound with the first voice coil 11 moves downwards to a preset position together, and the guide sleeve 220 is clamped by the guide sleeve stirring piece 226 to maintain the original position in the process; after the wire guide plate 210 and the mandrel 101 move downwards to the preset position, the guide sleeve 226 is matched with the concave pit on the periphery of the wire guide plate through the ball plunger 230 to be repositioned, the air cylinder 225 retreats, and then the second voice coil 12 can be wound.
Except for the original first voice coil wire inlet clamp and first voice coil wire outlet clamp which are used for the first voice coil on the winding machine, the cooperation device comprises a second voice coil wire inlet clamp and a second voice coil wire outlet clamp which are used for leading wires to enter and exit when the second voice coil is wound. In one embodiment, four clips (only three shown in fig. 3) are provided on the puck 103: a first voice coil wire inlet clamp 104, a first voice coil wire outlet clamp 105, a second voice coil wire inlet clamp 204 and a second voice coil wire outlet clamp 205.
By utilizing the cooperation device, the hardware structure and the function of the existing winding machine do not need to be changed, and the winding of the double voice coils on the same mandrel can be realized by only adding a small number of parts.
Referring to fig. 4A and 4B, in a specific embodiment, an improved wire clamp structure is further provided to better meet the requirement that four wire clamps are required to be arranged on the disc of the winding machine. The first voice coil wire clamp 104 is an existing structure, and the other three wire clamps may adopt the following modified structure.
As shown in fig. 4A, which is a second voice coil wire clip 204 in the embodiment, the second voice coil wire clip 204 includes a body 2041, a rotating shaft in the body 2041, and a movable abutting portion 2043 and a wire clamping portion 2044 located at two ends of the rotating shaft, where the body 2041 is fixed to the disk 103, and the movable abutting portion 2043 can be abutted by the abutting disk of the lower winding portion of the winding machine to rotate, so that the wire clamping portion 2044 rotates by a certain angle to clamp or release the wire of the voice coil.
As shown in fig. 4B, which is a schematic structural diagram of the wire clip 205 in an embodiment, the second voice coil wire clip 205 includes a body 2051, a spring 2052, and a wire stopper 2053, and the body 2051 may be fixed to the disc 103. The spring 2052 is fixed to the top of the body 2051, and in one embodiment the spring 2052 is a tension spring. By using the tension spring, the lead-out wire of the voice coil can be clamped and positioned.
As shown in fig. 4C, which is another wire clip 206 in one embodiment, the second voice coil wire clip 206 includes a body 2061, a spring 2062, and a stop 2063. In this embodiment, the spring 2062 is clamped in the mounting hole oppositely arranged on the upper portion of the body 2061 by a countersunk bolt 2064. By using the spring, the lead-out wire of the voice coil can be clamped and positioned.
By utilizing the wire incoming clamp and the wire outgoing clamp, four leads in the winding of the double voice coils can be restrained and positioned by utilizing the wire clamps. As shown in fig. 4D, a schematic diagram of four wire clips disposed on the disc 103 is shown. One of the wire clamps is arranged at a fixed position, and the other three wire clamps are arranged in the adjusting grooves of the disc 103, so that the position can be adjusted according to actual needs.
Based on the voice coil assembly and the cooperating device, an embodiment of the present invention further provides a winding apparatus for implementing the voice coil assembly, where the winding apparatus includes a winding machine and the aforementioned additional structure installed on the winding machine, the winding machine of this embodiment may adopt an existing winding machine, and the structure of the winding machine may selectively include, for example, a tensioner, a winding portion, a voice coil forming portion, a voice coil reversing portion, a lead sorting portion, a voice coil output portion, and the like, and the winding portion may include, but is not limited to, a wire feeding portion, a lower winding portion, an upper winding portion, a heat gun, and the like.
In one embodiment, the winding machine comprises a winding device including a mandrel 101, and the additional structure is used for winding at least two voice coils on the same mandrel in cooperation with the winding device.
In a specific embodiment, the core shaft 101 is sleeved with a wire guiding plate 210, the wire guiding plate 210 has an annular boss 215, the annular boss 215 is provided with a disc 103, the disc 103 is provided with a first voice coil wire inlet clamp 104 and a first voice coil wire outlet clamp 105 for winding a first voice coil 11, and a second voice coil wire inlet clamp 204 and a second voice coil wire outlet clamp for winding a second voice coil, and the specific structure of each clamp is as described above.
The existing winding machine wire inlet and outlet clamp is opened and closed by lifting of two rings below the wire clamp, the wire inlet clamp of the first voice coil and the wire inlet clamp of the second voice coil can be opened and closed by using the two rings by using the winding equipment and the additional structure thereof, the wire outlet clamp adopts a spring type wire outlet clamp, a lead is clamped by a spring on the wire outlet clamp, and the clamping force can be adjusted according to actual requirements.
The manufacturing method of the self-adhesive voice coil assembly provided by the embodiment comprises the following steps:
winding a first voice coil: winding a first voice coil on a mandrel;
winding a second voice coil: and winding a second voice coil on the mandrel close to the wound first voice coil.
The heating of the hot air gun of the winding part of the winding machine is utilized, the enamelled layer of the enameled wire for winding the voice coil is melted, so that two surfaces, connected with each other, of the first voice coil and the second voice coil are glued by self adhesion, and the voice coil combination with self adhesion is formed.
In this embodiment, the second voice coil 12 is wound above the first voice coil 11; after the first voice coil 11 is wound, the method further comprises the step of displacing the wound first voice coil 11 downwards so as to wind a second voice coil 12.
Please refer to fig. 5 for the specific winding steps, wherein:
the step of winding the first voice coil 11 includes: leading a lead into a first voice coil lead-in wire clamp; winding a first voice coil; and after the first voice coil is wound, the lead enters the first voice coil wire outlet clamp.
The step of winding the second voice coil includes: the cylinder advances to clamp the guide sleeve; descending the wire guide plate; the cylinder retreats; leading the lead into a second voice coil lead-in wire clamp; winding a second voice coil; after the second voice coil is wound, leading wires enter a second voice coil wire outlet clamp; the cylinder advances to clamp the guide sleeve; lifting and resetting the wire guide plate; the cylinder retreats and resets.
The above steps can be understood by combining the above text description of the present embodiment and the voice coil combination and the corresponding additional structure in fig. 1A to 4D, and are not repeated here.
The self-adhesive double-voice-coil combination can be realized through the additional structure and the manufacturing method, and the existing winding machine is only required to be modified rarely, so that the cost is low, the production efficiency is improved, and the product quality is greatly improved.
Example 2:
referring to fig. 1B, the voice coil assembly of this embodiment still uses a dual voice coil as an example, in which the first bonding surface 110 is a wireless surface of the first voice coil 11, and the second bonding surface 120 is a wireless surface of the second voice coil 12, that is, the wireless surfaces of the first voice coil 11 and the second voice coil 12 are connected to each other and bonded to form the voice coil assembly by self-adhesion.
The same parts in this embodiment as those in the previous embodiment will not be described again, for example, the structure of a single voice coil, additional structures, and the same parts in a winding machine, please refer to the content of the previous embodiment, and only different parts will be described below.
In the voice coil assembly of the present embodiment, which combines the two voice coils with the wireless surfaces thereof adhered to each other, the additional structural schematic diagram in fig. 6 may be used to cooperate with the lower winding portion of the existing winding machine to realize the coaxial winding of the first voice coil and the second voice coil.
Specifically, in an embodiment, the winding apparatus includes a winding device, the winding device includes a mandrel 401, a wire guide plate 410, a disc 420 and a wire clamp, the wire guide plate 410 is sleeved outside the mandrel 401, the wire guide plate 410 has an annular boss 411, the disc 420 is fixed on the annular boss 411 by a screw, and the disc 420 is provided with a first voice coil wire inlet clamp 431 and a first voice coil wire outlet clamp 432.
In order to realize the coaxial winding of the second voice coil 12, the cooperating device of the additional structure comprises an upper winding cooperating part 50, the upper winding cooperating part 50 comprises an upper wire guide plate 510, the upper wire guide plate 510 is provided with an annular boss 511, an upper disc 520 is arranged at the annular boss 511, and a second voice coil wire inlet clamp 531 and a second voice coil wire outlet clamp 532 are arranged on the upper disc 520.
In view of the limited space within the winding machine, it is preferred that the upper disk 520 in one embodiment has a smaller diameter than the lower disk 420 to more effectively avoid existing mechanical structures within the winding machine.
With the above structure, after the first voice coil 11 is wound, the upper wire guide 510 of the upper winding cooperation portion 50 descends and moves down to the upper portion of the mandrel 401, and the coaxial second voice coil can be wound by matching the wire guide 510 of the upper winding cooperation portion 50, the second voice coil wire incoming clamp 531 on the upper disc 520, and the second voice coil wire outgoing clamp 532 with the mandrel 401.
Since the above-mentioned upper winding cooperation mode is adopted, there is no influence on the existing lower winding part, and therefore, in specific implementation, the second voice coil wire inlet clamp 531 and the second voice coil wire outlet clamp 532 may adopt the same structure as the first voice coil wire inlet clamp and the first voice coil wire outlet clamp, as shown in fig. 7, which is not described herein again.
As shown in fig. 8, the method for manufacturing the voice coil assembly in the above embodiment is a method for manufacturing the voice coil assembly, wherein the step of winding the second voice coil includes:
a preparation step, in which an upper winding assisting part including the upper wire guide plate 510 is displaced and is lowered to a position above a voice coil winding position corresponding to a lower winding part of a winding machine including the mandrel 401, and a position for winding a second voice coil is formed between the upper wire guide plate 510 and the finished upper end of the first voice coil;
leading the lead into a second voice coil lead-in wire clamp;
winding a second voice coil;
after the second voice coil is wound, leading wires enter a second voice coil wire outlet clamp;
and a resetting step, wherein the upper winding assists partial resetting.
The self-adhesive double-voice-coil combination can be realized through the additional structure and the manufacturing method, and the existing winding machine is only required to be modified rarely, so that the cost is low, the production efficiency is improved, and the product quality is greatly improved.
Example 3:
referring to fig. 1C, the voice coil assembly of this embodiment still uses a dual voice coil as an example, in which the first bonding surface 110 is a wired surface of the first voice coil 11, and the second bonding surface 120 is a wired surface of the second voice coil 12, that is, the wired surfaces of the first voice coil 11 and the second voice coil 12 are connected to each other and are self-bonded to form the voice coil assembly. The same parts in this embodiment as those in the first two embodiments will not be described again, for example, the structure of a single voice coil, additional structures, and the same parts in a winding machine, please refer to the content of the first embodiment, and only different parts will be described below.
As shown in fig. 9, the additional structure in this embodiment includes not only the additional structure in any of the first two embodiments, but also an auxiliary core shaft 60, and an upper baffle 70 and a lower baffle 80 disposed at the upper and lower ends of the auxiliary core shaft 60, wherein the additional structure in any of the first two embodiments is used to complete the winding of the first voice coil 11 and the second voice coil 12, and the auxiliary core shaft 60, the upper baffle 70 and the lower baffle 80 are used to bond the wire surfaces of the two voice coils by self-adhesion.
As shown in fig. 5, 8 and 10, the method for manufacturing the dual voice coil assembly with the wire-side self-adhesive combination according to the present embodiment includes:
the first voice coil 11 and the second voice coil 12 are wound by adopting the additional structure and the winding method thereof in any one of the first two embodiments;
sleeving the wound first voice coil 11 and second voice coil 12 on the auxiliary mandrel 60, so that the wired surface of the first voice coil 11 is in contact with the wired surface of the second voice coil 12, that is, the lead 111 of the first voice coil 11 is in contact with the lead 121 of the second voice coil 12; for example, manually fitting the two voice coils over the auxiliary spindle 60;
the surface paint film of the enameled wires on the wired side of the first voice coil 11 and the wired side of the second voice coil 12 is melted by heating, and pressure is applied to the first voice coil 11 and the second voice coil 12 through the upper baffle 70 and/or the lower baffle 80, so that the wired side of the first voice coil 11 and the wired side of the second voice coil 12 are self-adhered. For example, a hot air gun is used to blow hot air to the wired surfaces of the two voice coils, so that the wired surfaces of the two voice coils are self-adhered.
The self-adhesive double-voice-coil combination can be realized through the additional structure and the manufacturing method, and the existing winding machine is only required to be modified rarely, so that the cost is low, the production efficiency is improved, and the product quality is greatly improved.
While the invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that these descriptions are illustrative and not intended to limit the scope of the invention. Various modifications and alterations of this invention will become apparent to those skilled in the art based upon the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.
Claims (12)
1. An additional structure of a winding device for realizing voice coil combination is characterized by comprising a cooperation device for winding a second voice coil on a mandrel of a winding machine wound with a first voice coil to form a self-adhesive bonding voice coil combination, wherein a lead plate is sleeved on the mandrel, a guide sleeve capable of rotating along with the lead plate is sleeved outside the lead plate, and the guide sleeve and the lead plate can be arranged in a relatively axial movement manner; and the part of the mandrel, which protrudes out of the wire guide plate and the guide sleeve, is used for winding the voice coil assembly.
2. The supplementary structure of winding equipment for voice coil assembly as claimed in claim 1, wherein said cooperating means comprises a second voice coil incoming wire clamp and a second voice coil outgoing wire clamp for the lead wire when winding the second voice coil.
3. The attachment structure of a voice coil assembly for a voice coil winding apparatus as claimed in claim 2, wherein said guide sleeve is axially movably fitted to said wire guide plate by a plurality of ball plungers, said wire guide plate having a recess, and a head of said ball plunger being positioned in said recess.
4. The additional structure of a winding device for realizing voice coil assembly as claimed in any one of claims 1 to 3, wherein the cooperating means comprises a guide sleeve moving mechanism, the guide sleeve moving mechanism comprises a cylinder fixed on the table of the winding machine and a guide sleeve toggle member mounted on the cylinder, and one end of the guide sleeve toggle member facing the guide sleeve is provided with a guide sleeve clamping groove.
5. The additional structure of a winding device for realizing voice coil combination according to any one of claims 1 to 3, wherein the cooperating means further comprises an auxiliary mandrel and an upper baffle and a lower baffle respectively arranged at the upper end and the lower end of the auxiliary mandrel.
6. A winding device for realizing voice coil combination comprises a winding machine, the winding machine comprises a winding device, the winding device comprises a mandrel, and the winding device is characterized by further comprising an additional structure matched with the winding device and used according to any one of claims 1 to 5.
7. The winding device for realizing the combination of the voice coil according to claim 6, wherein the core shaft is sleeved with a wire guide plate, the wire guide plate is provided with an annular boss, the annular boss is provided with a disk, and the disk is provided with a first voice coil wire inlet clamp and a first voice coil wire outlet clamp for winding a first voice coil.
8. The winding apparatus for realizing voice coil combination according to claim 7, wherein the disc further has a second voice coil incoming wire clamp and a second voice coil outgoing wire clamp for leading wires when winding a second voice coil.
9. The spooling apparatus of claim 8, wherein the first voice coil outlet clamp or/and the second voice coil outlet clamp is a spring-clamp outlet clamp.
10. A method of manufacturing a voice coil assembly, wherein the voice coil assembly is wound by a winding apparatus comprising an additional structure as claimed in any one of claims 1 to 3, the method comprising:
winding a first voice coil: winding a first voice coil on the mandrel by taking the upper end surface of the wire guide plate as a bearing surface;
after the first voice coil is wound, the wire guide plate moves downwards and drives the mandrel and the first voice coil to move downwards to a preset position so that the upper end of the first voice coil can be used as a bearing part of a second voice coil for subsequent winding;
winding a second voice coil: winding a second voice coil by using an upper end bearing part of the first voice coil to be closely connected with the wound first voice coil on the mandrel;
and self-adhering the two adjacent surfaces of the first voice coil and the second voice coil to form a self-adhered voice coil combination.
11. The method of making a voice coil assembly of claim 10, wherein the winding apparatus includes the additional structure of claim 4, and the step of winding the second voice coil includes:
the cylinder advances to clamp the guide sleeve;
descending the wire guide plate;
the cylinder retreats;
winding a second voice coil;
the cylinder advances to clamp the guide sleeve;
lifting and resetting the wire guide plate;
the cylinder retreats and resets.
12. A method of making a voice coil assembly as claimed in claim 10, wherein the wire winding apparatus includes the additional structure as claimed in claim 5, the method comprising:
sleeving the wound first voice coil and the wound second voice coil on the auxiliary mandrel, so that the wired surface of the first voice coil is contacted with the wired surface of the second voice coil;
and melting the wired surface of the first voice coil and the wired surface of the second voice coil by heating, and applying pressure to the first voice coil and the second voice coil through the upper baffle and/or the lower baffle to enable the wired surface of the first voice coil and the wired surface of the second voice coil to be glued in a self-adhesive mode.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111741415A (en) * | 2020-07-10 | 2020-10-02 | 瑞声科技(新加坡)有限公司 | Sound production device, voice coil thereof and winding method of voice coil |
| CN111741416B (en) * | 2020-07-10 | 2021-12-14 | 瑞声科技(新加坡)有限公司 | Sound production device, voice coil thereof and winding method of voice coil |
| CN112040379B (en) * | 2020-09-02 | 2021-10-29 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil heating device |
| CN112040376B (en) * | 2020-09-02 | 2021-09-28 | 瑞声新能源发展(常州)有限公司科教城分公司 | Voice coil manufacturing system and voice coil manufacturing method |
| CN112004179B (en) * | 2020-09-02 | 2021-09-24 | 瑞声新能源发展(常州)有限公司科教城分公司 | Voice coil manufacturing system, coil heating device and auxiliary unit |
| CN112040378B (en) * | 2020-09-02 | 2021-08-31 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil winding device |
| CN112040377B (en) * | 2020-09-02 | 2021-08-31 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil winding device |
| CN112165677B (en) * | 2020-10-29 | 2022-04-26 | 瑞声新能源发展(常州)有限公司科教城分公司 | Winding method and winding device of double voice coils |
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