CN113345695B - Transformer and winding method thereof - Google Patents
Transformer and winding method thereof Download PDFInfo
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- CN113345695B CN113345695B CN202110422203.XA CN202110422203A CN113345695B CN 113345695 B CN113345695 B CN 113345695B CN 202110422203 A CN202110422203 A CN 202110422203A CN 113345695 B CN113345695 B CN 113345695B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/076—Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/10—Connecting leads to windings
Abstract
The invention relates to the technical field of transformers, in particular to a transformer and a winding method thereof.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer and a winding method thereof.
Background
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and mainly achieves the purpose of voltage transformation by the action of an induced magnetic field generated by the action of current in a primary coil and a secondary coil. The processes of winding, installation and the like of the production of the transformer are manually or semi-automatically produced, the production efficiency is low, and the market demand is increased, so that the structure of the transformer needs to be improved urgently to realize automatic production and efficiency improvement.
In the existing transformer framework, the connection of a coil lead wire and elements such as an external circuit board and the like is realized by pins of a shell; when connecting the coil lead and the pins, processing two pin holes on the transformer framework, after the coil winding is wound on the framework, penetrating the pins into the pin holes of the framework in a manual operation mode, and then soldering the lead of the two coil windings and the two pins by manual point soldering; and then, manually pasting a piece of copper foil on the side surface of the magnetic core, and pasting a lead on the copper foil to realize the conduction of the magnetic core and the grounding pin.
Therefore, the structure of the existing transformer is difficult to realize automatic production, and has the following defects:
1. the connection of the coil lead wire and elements such as an external circuit board and the like is realized by pins of the shell, and the automatic assembly steps are complex;
2. need process two pin holes on the skeleton, need the manual work to perforate and with pin cartridge in the pin hole when connecting the lead wire of coil, connect the lead wire and the pin of coil again, the lead wire of coil does not have fixed line structure of walking, leads to unable completion through automatic winding equipment, and degree of automation is low, need bend, reason line to the lead wire when manual soldering tin is connected lead wire and pin, and the operation is complicated and long consuming, leads to production efficiency to hang down. And the processing procedures of two pin holes are increased, and the production steps are complicated.
3. Need artifical subsides copper foil and hang the lead wire and realize magnetic core, coil ground connection, complex operation is complicated, needs to paste the copper foil in the magnetic core side and leads to being difficult to realize the automatic assembly of magnetic core and coil, and degree of automation is low, and consuming time and labor is with high costs, and production efficiency is low.
Disclosure of Invention
In order to solve one of the technical problems, the invention provides a transformer and a winding method thereof, wherein the transformer comprises a framework, a coil winding wound on the framework, a wire spool and a pin plate which are respectively arranged on two opposite sides of the bottom of the framework, and a wire connecting plate arranged on one side of the top of the framework, wherein the bottom surface of the wire spool is fixedly connected with a first pin group, and a wire slot structure for connecting the coil winding with the first pin group is formed on the wire spool; the four peripheral surfaces of the framework are coated with magnetic cores; the wiring disc, the pin guiding disc and the wire winding disc extend towards the opening surface of the magnetic core; the pin disc and the wiring disc are respectively provided with a plurality of second pin groups and third pin groups which are used for connecting the coil winding in a penetrating way, and the wiring disc is provided with a conducting structure for connecting the magnetic core and the third pin groups.
Preferably, an installation groove is formed on the bottom surface of the wire spool at the first pin group; the wire groove structure comprises a first wire groove and a second wire groove, wherein the first wire groove is formed in the bottom surface of the wire spool and communicated with the mounting groove and the coil winding, and the second wire groove is formed in the side surface of the wire spool and connected to the mounting groove.
Preferably, a winding post for winding the coil winding is formed on the outer periphery of the framework, and the coil winding comprises a primary coil, an auxiliary coil, a shielding coil and a secondary coil which are sequentially wound on the winding post from inside to outside; the periphery of the secondary coil is sequentially coated with an insulating film and an outer layer film.
Preferably, the starting end and the ending end of the secondary coil are respectively connected with the first pin group along the first wire slot and the second wire slot.
Preferably, the first wire slot is formed with an extension slot extending to the top surface of the wire spool along the side surface of the wire spool; and a winding boss is arranged on the side surface of the wire spool and on the side of the extension groove.
Preferably, a plurality of wiring platforms arranged in a row are formed on the pin plate, a containing groove is formed between the wiring platforms, and the second pin group penetrates through the wiring platforms.
Preferably, the wire connection disc comprises a plurality of wire connection discs, the wire connection discs extend outwards from the top of the framework on one side of the opening of the magnetic core, and a connection edge abutting against the side face of the magnetic core is formed on each wire connection disc; the connecting edge is provided with a notch for communicating the third pin group with the magnetic core; the conducting structure is connected with the magnetic core and the third pin group through the notch.
Preferably, the conducting structure is conductive adhesive, and the conductive adhesive is arranged in the notch to connect the magnetic core and the third pin group.
Preferably, the upper surface and the lower surface of the framework are provided with mounting platforms for mounting and embedding the magnetic core; and the side surface of the magnetic core is provided with fixing glue fixedly connected with the coil winding.
A winding method based on the transformer comprises the following steps:
s100, winding the starting end of the primary coil on the second pin group, winding the primary coil on the framework, then winding the finishing end of the primary coil on the second pin group, and winding an insulating layer on the primary coil;
s200, winding the starting end of the auxiliary coil on the second pin, winding the auxiliary coil on the framework, winding the finishing end of the auxiliary coil on the second pin group, and winding an insulating layer on the auxiliary coil;
s300, winding the starting end of the shielding coil on the second pin group, and winding the end of the shielding coil on the third pin group after the shielding coil is wound on the framework;
s400, winding the starting end of the secondary coil on the first pin group, winding the secondary coil into the first wire slot through the winding boss and the extension slot, winding the secondary coil on the framework along the first wire slot, and connecting the finishing end of the secondary coil with the first pin group through the second wire slot;
s500, connecting and fixing the ending end of the shielding coil and the third pin group through conductive adhesive, and respectively dotting tin on the first pin group and the second pin group to fixedly connect the starting end and the ending end of the primary coil, the auxiliary coil, the secondary coil and the starting end of the shielding coil.
From the above, the following beneficial effects can be obtained by applying the invention: according to the scheme of the invention, the wire spool and the pin plate are arranged on two opposite sides of the bottom of the framework, the wire spool on one side of the top of the framework is provided with the first pin group, the second pin group and the third pin group which are respectively penetrated on the wire spool, the pin plate and the wire plate, the wire spool is provided with the wire groove structure for connecting the coil winding with the first pin group, and the wire plate is provided with the conducting structure for connecting the magnetic core and the third pin group, so that the following beneficial effects are achieved:
1. a shell-free structure is realized, the assembly steps are reduced, and the subsequent automatic assembly is facilitated;
2. the line of coil winding is regulated through the wire slot structure, automatic winding production of equipment is realized, manual threading and winding are not needed, time and labor are avoided in manual operation, the first pin group can be integrally formed at the bottom of the wire spool, the processing procedure of processing two pin holes on the wire spool is avoided, the production steps are simplified, and the problem that automatic production of the existing transformer structure is difficult to realize is solved;
3. the grounding of the magnetic core, the shielding coil and the second pin group can be realized through the conducting structure, the automatic production can be realized, the manual winding and pasting production is not needed, and the production efficiency is greatly improved;
4. the magnetic core and the coil winding are connected and fixed through fixing glue, so that the coil winding is prevented from loosening due to vibration of the transformer in the use process, and the quality and the use safety of the transformer are ensured;
5. the periphery of the wire of the secondary coil is sequentially coated with the insulating film and the outer film, so that a good shielding and insulating effect is realized, the process of increasing the insulating sleeve and the adhesive tape is omitted, the insulating film and the outer film of the starting end and the ending end of the secondary coil are removed in advance, the wire core wound and connected with the first pin group is exposed, the subsequent film removing process is avoided, and the process steps are further reduced, so that the efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. 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.
FIG. 1 is a schematic perspective view of a transformer according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a transformer bobbin structure according to an embodiment of the present invention;
FIG. 3 is a bottom isometric view of a transformer according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a transformer according to an embodiment of the present invention;
fig. 5 is a bottom perspective view of a transformer according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
In order to solve the above-mentioned technical problem, the present embodiment provides a transformer, as shown in fig. 1-2, comprising a hollow frame 10 in an i shape, a bobbin 20 is provided at the bottom of the bobbin 10, a hollow winding post 11 is formed at the bobbin 10, a coil winding 40 is wound on the winding post 11, be provided with wire reel 20 and lead pin dish 50 in the relative both sides in skeleton 10 bottom, set up wiring dish 60 in skeleton 10 top one side, the first pin group 30 of bottom surface fixedly connected with of wire reel 20, wire reel 20 is formed with the wire casing structure that supplies coil winding 40 to connect first pin group 30, it has a plurality of second pin group 51 and third pin group 61 with being used for connecting coil winding 40 to wear to have put respectively on pin dish 50 and the wiring dish 60, the pin is connected with components and parts such as outside circuit board, realize no shell structure, reduce the assembly step, make things convenient for follow-up automatic assembly. The magnetic core 12 is wrapped around the framework 10, the magnetic core 12 comprises two pieces and is E-shaped, the upper surface and the lower surface of the framework 10 are provided with mounting platforms 13 for the magnetic core 12 to be embedded, the E-shaped magnetic core 12 is embedded on the framework 10, and the middle part of the magnetic core 12 is penetrated in the hollow winding post 11 and wrapped on the top surface, the bottom surface and the two side surfaces of the framework 10. Junction disc 60, the side of pin dish 50 and wire reel 20 in magnetic core 12 is outwards extended, wire reel 20 is formed with the wire casing structure that supplies coil winding 40 to connect first pin group 30, coil winding 40's lead wire is through arranging in the wire casing structure, and the wire casing structure is walked the line along the line and is realized being connected with the pin, the transformer through this wire casing structure can realize the automatic wire winding production of equipment, need not artifical threading wire winding, the efficiency of production is improved, avoid manual operation to waste time and energy simultaneously, the cost is saved, and the product quality is improved.
Specifically, the bobbin 10 is formed with the winding posts 11 on which the coil winding 40 is wound, wherein the winding posts 11 are rectangular, and the rectangular winding posts 11 can make the winding arrangement of the coil winding more compact and the coil winding easier than the existing cylindrical winding arrangement. The coil winding 40 comprises a primary coil, an auxiliary coil, a shielding coil and a secondary coil which are sequentially wound on the winding post 11 from inside to outside, and insulating tapes are arranged between the primary coil, the auxiliary coil and the shielding coil in pairs to realize insulation among the primary coil, the auxiliary coil and the shielding coil; because the secondary coil is wound on the outermost layer, in order to realize insulation with the outside, the periphery of the lead of the secondary coil is sequentially coated with the insulating film and the outer layer film, so that a good shielding insulation effect is realized, and the process of adding the insulating sleeve and the adhesive tape is omitted. In order to facilitate subsequent tin point connection, the insulating films and the outer films at the starting end and the finishing end of the secondary coil are removed in advance, and a section of inner coil core wire is exposed, so that the subsequent film removing procedure is avoided, the procedures are further reduced, and the efficiency is improved.
The starting end and the ending end of the primary coil and the auxiliary coil are both connected to the second pin group 51; the start end of the shielding coil is connected to the second pin group 51, and the end of the shielding coil is connected to the third pin group 61; the starting end and the ending end of the secondary winding are both connected to the first pin group 30.
The last layer of secondary coil is wound on the framework, when the starting end and the finishing end of the fixed secondary coil are connected on the framework 10, two pin holes need to be processed on the framework, pins are inserted into the pin holes, then the lead wires of the coil are connected with the pins, the lead wires of the coil are not provided with a fixed wiring structure, the lead wires cannot be completed through automatic winding equipment, the automation degree is low, the lead wires need to be bent and managed when the lead wires and the pins are connected through manual soldering tin, the operation is complex and long in time consumption, the production efficiency is low, the processing procedures of the two pin holes are increased, and the production steps are complex. To this end, a mounting groove 31 is formed at the first lead group 30 on the bottom surface of the wire spool 20, and the wire groove structure includes a first wire groove 21 formed on the bottom surface of the wire spool 20 and communicating the mounting groove 31 and the coil winding 40, and a second wire groove 22 opened at the side surface of the wire spool 20 and connected to the mounting groove 31.
Specifically, as shown in fig. 3-5, the second wire slot 22 extends to the top surface of the wire spool 20, the starting end of the secondary coil is connected to the first pin group 30 along the first wire slot 22, wherein the first pin group 30 includes two pins, and the ending end of the secondary coil is connected to the first pin group 30 along the second wire slot 22, and then the connection is completed by automatic tin dispensing. The first wire groove 21 and the second wire groove 22 form a winding route for fixing the first pin group 30, so that the starting end and the finishing end of the secondary coil can be guided by automatic winding equipment to be respectively connected with the first pin group 30 along the fixed winding route, and automatic production is realized through the wire groove structure, and the production efficiency is improved. Through the wire casing structure can realize in the first pin group 30 of wire reel 20 bottom integrated into one piece, avoid processing the manufacturing procedure in two pin holes on needs wire reel 20, simplified the production steps, use manpower and materials sparingly.
Furthermore, the first wire casing 21 is provided with an extension groove 211 extending to the top surface of the wire spool 20 along the side surface of the wire spool 20, and a wire winding boss 23 is provided on the side surface of the extension groove 211 of the wire spool 20. There is wire winding boss 23 wire winding 20's side, and wire winding boss 23 is located the side of first wire casing 21 extending groove, and then the initiating terminal of secondary coil gets into first wire casing 21 along wire winding boss 23 and the extending groove 211 around 20 sides wire winding, can realize the firm effect to the initiating terminal of secondary coil and end lead wire through wire winding boss 23, guarantees that first lead wire 41 can not drop downwards from the opening that first wire casing 21 is down drags the wad. The wire casing structure through wire reel 20 can restrict the lead wire position of secondary coil after the wire winding, guarantees that the wire winding is accomplished the back lead wire and can not take place the displacement, ensures the steadiness of wiring.
The pin plate 50 is formed with a plurality of wire connection platforms 52 arranged in a row, a receiving groove 53 is formed between the wire connection platforms 52, and a second pin group 51 is threaded on the wire connection platforms 52, wherein the second pin group 51 comprises a plurality of pins. Each lead of the coil winding is connected with the second pin group 51 on the wiring platform 52 by being arranged in the accommodating groove 53, and the isolation and insulation among the leads are realized by the structure of the accommodating groove 53, so that an insulating tube is not required to be sleeved on the leads, and the steps, the processes and the materials are saved, thereby achieving the purpose of saving the cost and providing structural convenience for the automatic winding operation.
The third pin group 61 is connected with the shielding coil, in order to realize the conduction connection between the magnetic core 12 and the third pin group 61, the wire connecting plate 60 comprises a plurality of wire connecting plates, the wire connecting plates extend outwards from one side of the opening of the magnetic core 12 at the top of the framework 10, and a connecting edge 63 abutted against the side surface of the magnetic core 12 is formed on the wire connecting plate 60; the connecting edge 63 is provided with a notch 62 for communicating the third pin group 61 with the magnetic core 12; the conducting structure 70 connects the core 12 and the third pin set 61 through the notch 62.
Further, conduction structure 70 is the conducting resin, the shielding coil coiling is on skeleton 10 and the end connection back on the third pin group 61 of terminal plate 60, lie in third pin group 61 point conducting resin on terminal plate 60 through some adhesive device, through arranging the conducting resin in order to realize the magnetic core 12 and the electric connection of third pin group 61 in notch 62, it is effectual to switch on through the conducting resin realization, and the point is glued firmly and is difficult for droing, carry out some adhesive through some adhesive device on terminal plate 60 specific notch 62 positions after automatic wire winding accomplishes, can realize automated production through designing this ground structure, need not artifical manual wire winding paster production, the efficiency of production is greatly improved, the cost of labor is reduced.
Wherein, the wiring dish 60 that this embodiment provided includes two sets ofly, can set up the wiring dish 60 of different quantity according to the actual wire winding demand, all set up third pin group 61 on two sets of wiring dishes 60, the contact takes place the short circuit after leading to the wire winding too closely for the realization to avoid between each wiring dish 60, it is formed with the spacer bar that is used for a plurality of wiring dish 60 at the interval to connect limit 63 downwardly extending, make through the spacer bar and keep safe distance between each wiring dish 60, ensure that the short circuit can not take place in the contact after wire winding on the pin, improve the safety in utilization and the quality safety of transformer.
Coil winding 40 coiling back on skeleton 10, magnetic core 12 presss from both sides and closes the upper and lower face at skeleton 10, because there is the clearance between coil winding 40 and the magnetic core 12, coil winding 40 coiling does not have fixed knot structure on skeleton 10 with fixed coil winding 40, in the transformer use, vibrations can make coil winding 40 take place not hard up, cause the quality problem, for this reason, this embodiment is provided with fixed glue 80 of fixed connection coil winding 40 in the side of magnetic core 12, fixed glue 80 on the side point of magnetic core 12 through automatic adhesive deposite equipment, it is fixed to realize magnetic core 12 and coil winding 40, avoid in the use transformer vibrations to lead to coil winding 40 not hard up, ensure the quality and the safety in utilization of transformer.
In order to improve the winding production efficiency of the transformer, the present embodiment provides a winding method based on the transformer, including the following steps:
s100, winding the initial end of the primary coil on the second pin group 51, winding the primary coil on the winding post 11, then winding the end of the primary coil on the second pin group 51, and winding and covering an insulating layer on the primary coil;
the starting end of the primary coil wire is wound on the pins of the second pin group 51, the primary coil is wound on the winding post 11, the ending end of the primary coil is wound on the pins of the second pin group 51, and an insulating layer is wound and covered on the wound primary coil.
S200, winding the starting end of the auxiliary coil on the second pin group 51, winding the auxiliary coil on the winding post 11, then winding the finishing end of the auxiliary coil on the second pin group 51, and winding and covering an insulating layer on the auxiliary coil;
the start end of the auxiliary coil wire is wound on the pins of the second pin group 51, after the auxiliary coil is wound on the winding post 11, the end of the auxiliary coil wire is wound on the second pin group 51, and then an insulating layer is wound on the auxiliary coil.
S300, winding the starting end of the shielding coil on the second pin group 51, and winding the end of the shielding coil on the third pin group 61 after winding the shielding coil on the winding post 11;
the start end of the shielding coil is wound on the second pin set 51, and the end of the shielding coil is wound on the third pin set 61 after the shielding coil is wound on the winding post 11.
S400, the starting end of the secondary coil is wound on the first pin group 30, wound into the first wire slot 21 through the winding boss 23 and the extension slot 211, wound to the winding post 11 along the first wire slot 21 and wound on the winding post 11, and the ending end of the secondary coil is connected with the first pin group 30 through the second wire slot 22.
The exposed starting end of the secondary coil wire is wound on one pin of the first pin group 30, the secondary coil bypasses the winding boss 23 and the extending groove 211 on the side surface of the wire spool 20, further enters the first wire groove 21 on the bottom surface of the wire spool 20, is wound on the wire spool 11 along the first wire groove 21, is wound on the wire spool 11, extends downwards at the ending end thereof and is connected with the other pin of the first pin group 30 through the second wire groove 22,
s500, connecting and fixing the end of the shielding coil and the third pin group 61 through conductive adhesive, and enabling the conductive adhesive to be in contact with the side face of the magnetic core 12; the first lead group 30 and the second lead group 51 are respectively dotted with tin to fixedly connect the starting and ending terminals of the primary coil, the auxiliary coil, the secondary coil, and the starting terminal of the shield coil.
After the winding of each coil winding is finished, conductive adhesive is dispensed on the third pin group 61 through a dispenser to realize fixation, and the end of the shielding coil, the third pin group 61 and the side surface of the magnetic core 12 are communicated through the conductive adhesive to realize the grounding effect of the shielding coil; the second lead group 51 is wound with a primary coil, a start end and an end of an auxiliary coil, and a start end of a shield coil; tin is dispensed on the second pin group 51 through a dispenser to realize the connection and fixation of the second pin group 51 and the coil; and tin is dotted on the first pin group 30 to realize the connection and fixation of the first pin group 30 and the secondary coil. The primary coil, the auxiliary coil, the shielding coil and the secondary coil are sequentially wound on the framework 10 through the structure of the framework 10 and the winding method, and the whole production of the transformer is completed through soldering tin connection, so that the problem that the automatic production of the existing transformer structure is difficult to realize is solved.
In summary, in the scheme of the present invention, the wire spool and the pin spool are disposed on two opposite sides of the bottom of the bobbin, the first pin group, the second pin group and the third pin group are respectively disposed on the wire spool, the pin spool and the wire spool, the wire spool is formed with a slot structure for connecting the coil winding with the first pin group, and the wire spool is provided with a conducting structure for connecting the magnetic core and the third pin group, so as to achieve the following beneficial effects:
1. the structure without the shell is realized, the assembly steps are reduced, and the subsequent automatic assembly is facilitated;
2. the line of coil winding is regulated through the wire slot structure, automatic winding production of equipment is realized, manual threading and winding are not needed, time and labor are avoided in manual operation, the first pin group can be integrally formed at the bottom of the wire spool, the processing procedure of processing two pin holes on the wire spool is avoided, the production steps are simplified, and the problem that the automatic production of the existing transformer structure is difficult to realize is solved;
3. the grounding of the magnetic core, the shielding coil and the second pin group can be realized through the conducting structure, the automatic production can be realized, the manual winding and pasting production is not needed, and the production efficiency is greatly improved;
4. the magnetic core and the coil winding are connected and fixed through fixing glue, so that the coil winding is prevented from loosening due to vibration of the transformer in the use process, and the quality and the use safety of the transformer are ensured;
5. the periphery of the wire of the secondary coil is sequentially coated with the insulating film and the outer film, so that a good shielding and insulating effect is realized, the process of increasing the insulating sleeve and the adhesive tape is omitted, the insulating film and the outer film of the starting end and the ending end of the secondary coil are removed in advance, the wire core wound and connected with the first pin group is exposed, the subsequent film removing process is avoided, and the process steps are further reduced, so that the efficiency is improved.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (6)
1. A transformer, characterized by: the wire winding device comprises a framework (10), a coil winding (40) wound on the framework (10), a wire winding disc (20) and a pin guiding disc (50) which are respectively arranged on two opposite sides of the bottom of the framework (10), and a wire connecting disc (60) arranged on one side of the top of the framework (10), wherein a first pin group (30) is fixedly connected to the bottom surface of the wire winding disc (20), and a wire groove structure for the coil winding (40) to be connected with the first pin group (30) is formed in the wire winding disc (20); the four peripheral surfaces of the framework (10) are coated with magnetic cores (12); the wiring plate (60), the pin plate (50) and the wire winding plate (20) extend outwards from the side surface of the magnetic core (12); a second pin group (51) and a third pin group (61) for connecting a coil winding (40) are respectively arranged on the pin disc (50) and the wire connection disc (60) in a penetrating manner, a conducting structure (70) for connecting the magnetic core (12) and the third pin group (61) is arranged on the wire connection disc (60), and a mounting groove (31) is formed in the position, located at the first pin group (30), of the bottom surface of the wire winding disc (20); the wire slot structure comprises a first wire slot (21) which is formed on the bottom surface of the wire spool (20) and is communicated with the mounting groove (31) and the coil winding (40), and a second wire slot (22) which is opened on the side surface of the wire spool (20) and is connected to the mounting groove (31); the bobbin (10) is provided with a winding post (11) for winding the coil winding (40), and the coil winding (40) comprises a primary coil, an auxiliary coil, a shielding coil and a secondary coil which are sequentially wound on the winding post (11) from inside to outside; an insulating layer is arranged between the primary coil, the auxiliary coil and the shielding coil; the periphery of a lead of the secondary coil is sequentially coated with an insulating film and an outer layer film, the starting end and the ending end of the secondary coil are respectively connected with the first pin group (30) along the first wire groove (21) and the second wire groove (22), and the first wire groove (21) is provided with an extending groove (211) extending to the top surface of the wire spool (20) along the side surface of the wire spool (20); and a winding boss (23) is arranged on the side surface of the wire spool (20) on the side of the extension groove (211).
2. The transformer of claim 1, wherein: a plurality of wiring platforms (52) arranged in an array are formed on the pin plate (50), accommodating grooves (53) are formed between the wiring platforms (52), and the second pin group (51) penetrates through the wiring platforms (52).
3. The transformer of claim 1, wherein: the wire connection disc (60) comprises a plurality of wire connection discs, the wire connection discs extend outwards from the top of the framework (10) on one side of the opening of the magnetic core (12), and a connection edge (63) abutted against the side face of the magnetic core (12) is formed on each wire connection disc (60); the connecting edge (63) is provided with a notch (62) for communicating the third pin group (61) and the magnetic core (12); the conducting structure (70) connects the magnetic core (12) and the third pin group (61) through the notch (62).
4. The transformer of claim 3, wherein: the conducting structure (70) is conductive adhesive, and the conductive adhesive is arranged in the notch (62) to connect the magnetic core (12) and the third pin group (61).
5. The transformer of claim 1, wherein: the upper surface and the lower surface of the framework (10) are provided with mounting platforms (13) for the magnetic cores (12) to be embedded; and the side surface of the magnetic core (12) is provided with fixing glue (80) fixedly connected with the coil winding (40).
6. A winding method of a transformer according to claim 1, wherein: the method comprises the following steps:
s100, winding the starting end of the primary coil on the second pin group (51), winding the primary coil on the winding post (11) and then winding the finishing end of the primary coil on the second pin group (51), and winding and covering an insulating layer on the primary coil;
s200, winding the starting end of an auxiliary coil on the second pin group (51), winding the auxiliary coil on the winding post (11), winding the finishing end of the auxiliary coil on the second pin group (51), and winding and covering an insulating layer on the auxiliary coil;
s300, winding the starting end of a shielding coil on the second pin group (51), winding the shielding coil on the winding post (11), and winding the ending end of the shielding coil on the third pin group (61);
s400, winding the starting end of a secondary coil on the first pin group (30), winding the secondary coil into the first wire groove (21) through a winding boss (23) and an extension groove (211), winding the secondary coil on the winding post (11) along the first wire groove (21) and winding the secondary coil on the winding post (11), and connecting the finishing end of the secondary coil with the first pin group (30) through the second wire groove (22);
s500, connecting and fixing the end of the shielding coil and the third pin group (61) through conductive adhesive, and enabling the conductive adhesive to be in contact with the side face of the magnetic core (12); and tin is respectively dotted on the first pin group (30) and the second pin group (51) to fixedly connect the starting end and the ending end of the primary coil, the auxiliary coil, the secondary coil and the starting end of the shielding coil.
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