CN101599360B - Method for manufacturing embedded transformer framework mounted with low-voltage coil and product - Google Patents
Method for manufacturing embedded transformer framework mounted with low-voltage coil and product Download PDFInfo
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- CN101599360B CN101599360B CN2009101068829A CN200910106882A CN101599360B CN 101599360 B CN101599360 B CN 101599360B CN 2009101068829 A CN2009101068829 A CN 2009101068829A CN 200910106882 A CN200910106882 A CN 200910106882A CN 101599360 B CN101599360 B CN 101599360B
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Abstract
The invention discloses a method for manufacturing a transformer framework mounted with a low-voltage coil, which comprises the following steps: a, continuously punching a copper strap to form a coil blank strap through a coil blank die; b, continuously conveying the coil blank strap to a bending molding die, and processing each coil blank on the strap into a mounted low-voltage coil which comprises a coil part and two extension lines which are extended to the positioning edges of the copper strap from two ends of the coil part and form an included angle of 85 to 95 degrees with a cross section of the coil part; and c, feeding the strap manufactured in step b and provided with a plurality of mounted low-voltage coils into a die cavity of a framework die, making the strap into the framework through an insert molding process, and embedding each mounted low-voltage coil on the strap into a corresponding low-voltage coil area of the framework to form a whole member. The low-voltage coil is an integral member punched by the copper strap, has good consistency, can be produced in batch, and lowers the manufacturing cost; and the coil part is wrapped by a framework plastic material, does not loosen, and can meet the mounting process of a circuit board.
Description
Technical field
The invention belongs to the transformer technology field, specifically be a kind of transformer framework and manufacture method of embedded mounted with low-voltage coil, it is combined into an integrated member by the inserts Shooting Technique with mounted with low-voltage coil and plastic skeleton, for the coiling of follow-up high-tension coil and the attachment process of transformer are provided convenience.
Background technology
Transformer framework is used to carry high pressure winding and low pressure winding, and traditional transformer framework comprises plastic skeleton, and the magnetic core hole is arranged in the skeleton, and the pin seat is extended at two ends, and skeleton is provided with high-voltage line ring recess and low-voltage line ring recess.In the subsequent handling,, with the terminal and corresponding pin welding of each coil, can constitute transformer again by the coil winding machine high and low line pressure circle of coiling in the high and low pressure coil area respectively.Its operation is loaded down with trivial details, and efficient is low, and repeatedly coiling usually causes skeleton low-pressure side pin stress deformation, and is smooth bad.
The patent No. is that 200720172351.6 invention has proposed a kind of transformer framework with mounted with low-voltage coil, it installs to structure of formation on the plastic skeleton with the mounted with low-voltage coil cover of moulding in advance, mounted with low-voltage coil can directly paste PCB by its pin, certain convenience is provided for the coiling of follow-up high-tension coil and the attachment process of transformer.But the consistency of the mounted with low-voltage coil of the coiling moulding of this scheme is undesirable, and in the subsequent handling, loosening phenomenon appears in mounted with low-voltage coil easily that be sleeved on the transformer framework.
Summary of the invention
For overcoming the prior art above shortcomings, the invention provides a kind of transformer framework and manufacture method of embedded mounted with low-voltage coil, mould technology by inserts moulding mounted with low-voltage coil and plastic skeleton are combined into an integrated member, with convenient coiling of follow-up high-tension coil and mounting of transformer.
The transformer framework manufacture method of the embedded mounted with low-voltage coil of the present invention may further comprise the steps:
A. copper strips is struck out the coil base sheet band with some coil base sheets continuously by coil base die;
B. this coil base sheet band is sent into the bending and molding mould continuously, make each the coil base sheet on this coil base sheet band be processed into mounted with low-voltage coil; This mounted with low-voltage coil comprises coiler part and extends to two lead-out wires of the gulde edge of described copper strips from these coiler part two ends in the same way that these two lead-out wires become the angle of 85-95 degree with the cross section of this coiler part; And,
C. make the band material with some mounted with low-voltage coil of step b making and the die cavity that high-voltage connection band material passes through the skeleton mould synchronously, by inserts Shooting Technique moulding plastics skeleton, and the low-voltage coil district portion that makes each mounted with low-voltage coil on this band material be embedded in corresponding plastic skeleton forms an integrated member.
Wherein, the coil base sheet on the coil base sheet band of step a comprises two
Shape part and two lead-out wires, these two
Shape part openend is adjacent opposed, inner
The tail end of shape part and outside
The top of font part connects by a junction; The former top and the latter's tail end respectively extends to the gulde edge of described copper strips by a lead-out wire.
Described
Shape part can be with the oval part of an end opening
Or the like approximate shape partly substitute.
A kind of manufacture method of mounted with low-voltage coil may further comprise the steps:
A. copper strips is struck out the coil base sheet band with some coil base sheets continuously by coil base die; And,
B. this coil base sheet band is sent into the bending and molding mould continuously, make each the coil base sheet on this coil base sheet band be processed into mounted with low-voltage coil, this mounted with low-voltage coil comprises coiler part and extends to two lead-out wires of the gulde edge of described copper strips from these coiler part two ends in the same way that these two lead-out wires become the angle of 85-95 degree with the cross section of this coiler part.
The transformer framework of the embedded mounted with low-voltage coil that the inventive method is made, comprising: a plastic skeleton, this plastic skeleton have high-voltage line ring recess and low-voltage coil district, in establish the magnetic core hole, first and second pin seat is extended at two ends; And,
One mounted with low-voltage coil, this mounted with low-voltage coil comprise coiler part and two lead-out wires, and these two lead-out wires extend towards the second pin seat direction from the two ends of this coiler part respectively, and become the angle of 85-95 degree with the cross section of this coiler part; This mounted with low-voltage coil is embedded in the low-voltage coil district of described plastic skeleton by the inserts Shooting Technique, forms an integrated member with described plastic skeleton.
Wherein, described mounted with low-voltage coil is the one coil member that adopts the copper strips punch forming, and coiler part is coated by the plastic material of the low-voltage coil district portion of its place plastic skeleton.
Described mounted with low-voltage coil can comprise the copper coiler part and the lead-out wire at its two ends; This coiler part has 1.75 circles, comprises two
The shape part, one
The tail end of shape part and another
The top of shape part connects by a junction, and these two lead-out wires are respectively from another
The tail end of shape part, one from
The top of shape part towards coiler part longitudinally an extreme direction extend, and become the angle of 85-95 degree with the cross section of this coiler part.
The described mounted with low-voltage coil number of turn can be selected between 1.75～10 circles.
Be used for a kind of mounted with low-voltage coil of above-mentioned transformer framework, comprise: a copper coiler part; And, two lead-out wires, they respectively from the two ends of this coiler part towards coiler part longitudinally an extreme direction extend, and become the angle of 85-95 degree with the cross section of this coiler part 21.Wherein, described copper coiler part has 1.75 circles, and plane outspread drawing comprises two
The shape part, two
Shape part openend is adjacent opposed, one
The tail end of shape part and another
The top of shape part connects by a junction.
The present invention will mould technology by inserts mounted with low-voltage coil and plastic skeleton will be combined into an integrated member, and mounted with low-voltage coil is embedded in the low-voltage coil district portion of plastic skeleton, can not become flexible; Can directly be affixed on PCB by its pin, greatly facilitate follow-up high-tension coil coiling and with the attachment process of circuit board, the smooth bad problem of transformer framework low-pressure side pin stress deformation that can avoid traditional handicraft repeatedly to wind the line causing.
Simultaneously, mounted with low-voltage coil is the one coil member of copper strips punch forming or copper cash coiling moulding, and high conformity can be produced in batches, reduces cost of manufacture.
Description of drawings
Fig. 1 is the structural representation of exemplary embodiments of the present invention;
Fig. 2 is the stereogram of bottom view of Fig. 1 embodiment;
Fig. 3 is the mounted with low-voltage coil one example structure schematic diagram in Fig. 1 exemplary embodiments;
Fig. 4 is the plane outspread drawing of Fig. 3 mounted with low-voltage coil embodiment;
Fig. 5 is a coil base sheet band (the being with some coil base sheets) schematic diagram of construction drawing 3 mounted with low-voltage coil;
Fig. 6 is bent into the schematic diagram of stand-by low-voltage coil for the coil base sheet on Fig. 5 coil base sheet band;
Fig. 7 is another coil base sheet band schematic diagram of construction drawing 3 mounted with low-voltage coil.
Embodiment
Be described further below in conjunction with the embodiment accompanying drawing.
With reference to Fig. 1-4, the transformer framework of the embedded mounted with low-voltage coil of this embodiment comprises plastic skeleton 1 and mounted with low-voltage coil 2.Plastic skeleton 1 has high-voltage line ring recess 12 and low-voltage coil district 14, in establish magnetic core hole 17, first and second two pin seats 11,15 are extended at two ends, establish the pin 151 of establishing the other end that is used to connect high-tension coil on number of pins 111, the second pin seats 15 of an end that is used to connect high-tension coil on the first pin seat 11.
The free end that mounted with low-voltage coil 2 comprises coiler part 21 and two lead-out wire 22,25, two lead-out wires 22,25 for by the mould forging forming mount pin 23,24, the surface is electroplated pure bright tin and is handled; These two lead-out wires 22,25 extend towards the second pin seat, 15 directions from the two ends of this coiler part 21 respectively, and become the angle of 85-95 degree with the cross section of this coiler part 21; This mounted with low-voltage coil 2 is embedded in the low-voltage coil district portion 14 of described plastic skeleton 1 by the inserts Shooting Technique, forms an integrated member with described skeleton 1.
Wherein, described mounted with low-voltage coil 2 is the one coil members that adopt the copper strips punch forming of certain thickness (as 0.2-1.5mm), coiler part 21 is coated by the plastic material of the low-voltage coil district portion 14 of its place plastic skeleton 1, is also isolated by plastic material between each coil of coiler part 21.
According to being used for the transformer specification requirement that pcb board mounts, mounted with low-voltage coil 2 numbers of turn can be selected between 1.75～10 circles, but are not limited thereto number of turn scope.Mounted with low-voltage coil 2 also can be used copper cash coiling moulding, and two lead-out wires that make its coiler part two ends along coiler part longitudinally an end draw.
The conductor cross-section of mounted with low-voltage coil 2 can be rectangle or circle etc.
It is in the same plane that two of mounted with low-voltage coil 2 mount the lower surface of other pin 111,151 of the lower surface of pin 23,24 and described plastic skeleton 1, with convenient follow-up finished product (being wound with high-tension coil) with the pcb board location, mount.
High-voltage line ring recess 12 on the plastic skeleton 1 can be provided with some dividing plates 121 with the tradition design on it, be used for average voltage, and high-tension coil requires other coiling according to product specification.Bottom surface at the first pin seat 11 of plastic skeleton 1 can be provided with some locating shafts 18, is used for cooperating accurately location with location hole on the circuit board.
At least one duct 19 that is communicated with the base channel section of high-voltage line ring recess 12 can be offered in the first pin seat, 11 bottom surfaces that are positioned at described high-voltage line ring recess 12 ends, is used for an outlet part ccontaining, the protection high-tension coil.In described low-voltage coil district 14 and the bottom surface of the second pin seat 15 that connects offer two ducts 16, these two ducts 16 are communicated with the base channel section of high-voltage line ring recess 12, are used for another ccontaining, as to protect high-tension coil outlet part.
Mounted with low-voltage coil one embodiment sees Fig. 3, and this mounted with low-voltage coil 2 comprises the lead-out wire part 22,25 at copper coiler part 21 and its two ends.This coiler part 21 has 1.75 circles, comprises two
Shape part (being the rectangle part of openings at one side) 211,212,
The tail end of shape part 211 and another
The top of shape part 212 connects by a junction 213, and these two lead-out wires 22,25 are respectively from another
The tail end of shape part 212, one from
The top of shape part 211 towards coiler part longitudinally an extreme direction extend, and become the angle of 85-95 degree with the cross section of this coiler part, this connecting portion 213 is preferably in the plane at two lead-out wire 25,22 places.
The plane outspread drawing of Fig. 3 embodiment (being coil base sheet figure) as shown in Figure 4, its plane outspread drawing comprises two that constitute coiler part
Shape part (being the rectangle part of openings at one side) 211,212, two
Shape part 211,212 openends are adjacent opposed, one
The tail end of shape part 211 and another
The top of shape part 212 connects by a junction 213, and connecting portion 213 can be selected oblique strip shaped or broken line shape; This lead-out wire 22 from
The tail end of shape part 212 extends, this lead-out wire 25 from
The top of shape part 211 extends, the bearing of trend unanimity of two lead-out wires 22,25, and the free end of two lead-out wires 22,25 is the pin portion that mounts 23,24 to be formed.
When the number of turn of mounted with low-voltage coil more for a long time, its coiler part can adopt the coil of 1.75 circles and the mounted with low-voltage coil that some single-turn circular coils connect and compose the number of turn of wanting.The coiler part of this mounted with low-voltage coil can be composed in series by coiler part 21 and at least one single-turn circular coil of 1.75 circles shown in Figure 3, the top of the tail end of previous single-turn circular coil and back single-turn circular coil welding between the adjacent single-turn circular coil, the tail end welding of the top of first single-turn circular coil and described 1.75 circle coils 21, the tail end of last single-turn circular coil and lead-out wire 22 welding, another lead-out wire 25 extends from the top of described 1.75 circle coils 21, this lead-out wire 22,25 and become the angle of 85-95 degree with the cross section of this coiler part.Wherein, this single-turn circular coil and shown in Figure 3 by
Shape part 212 be connected this
The loop construction that the bar shaped connecting portion 213 of shape part 212 constitutes is identical; The plane outspread drawing of this single-turn circular coil (unicoil base sheet) shape is substantially with above among Fig. 4
Shape part 212 and connection should
Connecting portion 213 parts of shape part 212 become the standard single-turn circular coil by the bending and molding Mould Machining.
Above-mentioned two
Shape part (being the rectangle part of openings at one side) can be with the oval part of an end opening
Or the like approximate shape partly substitute.
With reference to Fig. 3,4, be used to mount a kind of mounted with low-voltage coil of transformer framework, comprising:
One copper coiler part 21; And,
Article two, lead-out wire 22,25, and they extend towards same direction from the two ends of this coiler part 21 respectively, and a coiler part extreme direction longitudinally extends, and become the angle of 85-95 degree with the cross section of this coiler part 21.
These mounted with low-voltage coil 2 numbers of turn can be selected between 1.75～10 circles.
When copper coiler part 21 was 1.75 circles, its planar development Fig. 4 comprised two
211,212, two of shape parts
Shape part 211,212 openends are adjacent opposed, one
The tail end of shape part and another
The top of shape part connects by a junction 213.And from
The tail end of shape part 212 extends lead-out wire 22, from
The top of shape part 211 extends the bearing of trend unanimity of lead-out wire 25, two lead-out wires 22,25, and the free end of two lead-out wires 22,25 is the pin portion that mounts 23,24 to be formed.
The transformer framework manufacture method of the embedded mounted with low-voltage coil of the present invention may further comprise the steps:
A. punching out coil base sheet
With reference to Fig. 5, copper strips struck out continuously by coil base die have some coil base sheet 2,2 ' etc. coil base sheet band.Wherein, comprise as coil base sheet 2: two
Shape part (being the rectangle part of openings at one side) 211,212, two
Shape part 211,212 openends are adjacent opposed, one
The tail end of shape part 211 and another
The top of shape part 212 connects by a junction 213, and this connecting portion 213 is an oblique strip shaped; And, two lead-out wires 22,25, lead-out wire 22 from
The tail end of shape part 212 extends to the gulde edge 3 of described copper strips, lead-out wire 25 from
The top of shape part 211 extends to the gulde edge 3 of described copper strips, and the coupling part of offering 31, two lead-out wire 22,25 nearly these gulde edges 3 of location hole on this gulde edge 3 is the pin portion that mounts 23,24 to be formed.Be connected with this gulde edge 3 in addition between the lead-out wire 22,25
Shape pin portion 151.Above-mentioned
Shape part can be with the oval part of an end opening
Or the like approximate shape partly substitute.
And the high-voltage connection base sheet of punching out designing requirement is processed into the high-voltage connection base sheet band with some high-voltage connection base sheets traditionally.
B. Fig. 5 coil base sheet band is sent into the bending and molding mould continuously, make each the coil base sheet on this coil base sheet band be processed into stand-by mounted with low-voltage coil; Be the schematic diagram that coil base sheet 2 on Fig. 5 coil base sheet band is bent into stand-by low-voltage coil as Fig. 6, stand-by mounted with low-voltage coil 2 comprises coiler part 21 and extends to 22,25, two of two lead-out wires bending 90 degree upwards of the gulde edge 3 of described copper strips from these coiler part two ends among Fig. 6
Shape part 211,212 and
The tail end of shape part 211 and
Oblique strip shaped connecting portion 213 between the top of shape part 212 forms the coiler part 21 of 1.75 circles, two lead-out wires 22,25 of this connecting portion 213, connection copper strips gulde edge 3 and above-mentioned
Shape pin portion 151 still is positioned at plane, copper strips place.
Band with some mounted with low-voltage coil and above-mentioned high-voltage connection base sheet band that step b is made with some high-voltage connection base sheets, synchronous die cavity through the skeleton mould, by inserts Shooting Technique moulding plastics skeleton, and the low-voltage coil district portion that makes each mounted with low-voltage coil on this band material be embedded in corresponding plastic skeleton forms an integrated member, simultaneously, above-mentioned
Be embedded to the second pin seat 15 of skeleton in shape pin portion 151 quilts, be embedded to the first pin seat 11 of skeleton in the high-voltage connection base sheet quilt.
Then, cut the gulde edge of described copper strips and the gulde edge of high-voltage connection base sheet, and each pin of moulding promptly gets Fig. 1 skeleton product.Among Fig. 1,111 for being embedded in a high pressure pin of the first pin seat 11, and 151 for being embedded in another high pressure pin of the second pin seat 15, and two lead-out wires 22,25 of mounted with low-voltage coil 2 are the molded pin 23,24 that mounts of portion not.
Fig. 7 is another coil base sheet band schematic diagram of construction drawing 3 mounted with low-voltage coil.Coil base sheet 2 among Fig. 7,2 ' and the structure of the coil base sheet of Fig. 5 basic identical, be that its connecting portion adopts broken line shape connecting portion 213 in the difference.Comprise two as coil base sheet 2
22,25, two of 211,212 and two lead-out wires of shape part
Shape part 211,212 openends are adjacent opposed, one
The tail end of shape part 211 and another
The top of shape part 212 connects by broken line shape connecting portion 213, and all the other are with above-mentioned Fig. 5 explanation.
Claims (10)
1. the transformer framework manufacture method of an embedded mounted with low-voltage coil is characterized in that may further comprise the steps:
A. copper strips is struck out the coil base sheet band with some coil base sheets continuously by coil base die;
B. this coil base sheet band is sent into the bending and molding mould continuously, make each the coil base sheet on this coil base sheet band be processed into mounted with low-voltage coil, this mounted with low-voltage coil comprises coiler part and extends to two lead-out wires of the gulde edge of described copper strips from these coiler part two ends in the same way that these two lead-out wires become the angle of 85-95 degree with the cross section of this coiler part; And,
C. make the band material with some mounted with low-voltage coil of step b making and the die cavity that high-voltage connection base sheet band passes through the skeleton mould synchronously, by inserts Shooting Technique moulding plastics skeleton, and the low-voltage coil district portion that makes each mounted with low-voltage coil on this band material be embedded in corresponding plastic skeleton forms an integrated member.
2. manufacture method as claimed in claim 1 is characterized in that: the coil base sheet on the coil base sheet band of step a comprises two
Shape part and two lead-out wires, these two
Shape part openend is adjacent opposed, inner
The tail end of shape part and outside
The top of font part connects by a junction; The former top and the latter's tail end respectively extends to the gulde edge of described copper strips by a lead-out wire.
3. manufacture method as claimed in claim 1 is characterized in that: the coiler part of described mounted with low-voltage coil comprises 1.75～10 circles.
4. the manufacture method of a mounted with low-voltage coil is characterized in that may further comprise the steps:
A. copper strips is struck out the coil base sheet band with some coil base sheets continuously by coil base die; And,
B. this coil base sheet band is sent into the bending and molding mould continuously, make each the coil base sheet on this coil base sheet band be processed into mounted with low-voltage coil, this mounted with low-voltage coil comprises coiler part and extends to two lead-out wires of the gulde edge of described copper strips from these coiler part two ends in the same way that these two lead-out wires become the angle of 85-95 degree with the cross section of this coiler part.
5. the transformer framework of the embedded mounted with low-voltage coil of making according to each described method of claim 1-3 comprises a plastic skeleton, and this plastic skeleton has high-voltage line ring recess and low-voltage coil district, in establish the magnetic core hole, first and second two pin seats are extended at two ends; It is characterized in that also comprising:
One mounted with low-voltage coil, this mounted with low-voltage coil comprise coiler part and two lead-out wires, and these two lead-out wires extend towards the second pin seat direction from the two ends of this coiler part respectively, and become the angle of 85-95 degree with the cross section of this coiler part; This mounted with low-voltage coil is embedded in the low-voltage coil district of described plastic skeleton by the inserts Shooting Technique, forms an integrated member with described plastic skeleton.
6. transformer framework according to claim 5 is characterized in that: described mounted with low-voltage coil comprises the copper coiler part and the lead-out wire at its two ends; This coiler part has 1.75 circles, comprises two
The shape part, one
The tail end of shape part and another
The top of shape part connects by a junction, and these two lead-out wires are respectively from another
The tail end of shape part, one
The top of shape part towards coiler part longitudinally an extreme direction extend, and become the angle of 85-95 degree with the cross section of this coiler part.
7. transformer framework according to claim 6 is characterized in that: the plane outspread drawing of described mounted with low-voltage coil comprises two that constitute coiler part
The shape part, two
Shape part openend is adjacent opposed, one
The tail end of shape part and another
The top of font part connects by a junction; Its two lead-out wire is respectively from another
The tail end of shape part and one
The top of shape part extends towards same direction, and the free end of two lead-out wires is the pin portion that mounts to be formed.
8. transformer framework according to claim 5 is characterized in that: described mounted with low-voltage coil has 1.75～10 circles.
9. transformer framework according to claim 5 is characterized in that: at least one duct that is communicated with the base channel section of high-voltage line ring recess is offered in the first pin seat bottom surface that is positioned at described high-voltage line ring recess end, is used for an outlet part ccontaining, the protection high-tension coil; Two ducts are offered in bottom surface in the second pin seat of described low-voltage coil district and connection thereof, and these two ducts are communicated with the base channel section of high-voltage line ring recess, are used for another outlet part ccontaining, the protection high-tension coil.
10. the mounted with low-voltage coil that is used for claim 5 or 6 described transformer frameworks, it is characterized in that comprising copper coiler part and two lead-out wires, these two lead-out wires respectively from the two ends of this coiler part towards coiler part longitudinally an extreme direction extend, and become the angle of 85-95 degree with the cross section of this coiler part; Wherein, described copper coiler part has 1.75 circles, and plane outspread drawing comprises two
The shape part, two
Shape part openend is adjacent opposed, one
The tail end of shape part and another
The top of shape part connects by a junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009101068829A CN101599360B (en) | 2009-04-24 | 2009-04-24 | Method for manufacturing embedded transformer framework mounted with low-voltage coil and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101068829A CN101599360B (en) | 2009-04-24 | 2009-04-24 | Method for manufacturing embedded transformer framework mounted with low-voltage coil and product |
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| CN101599360B true CN101599360B (en) | 2011-05-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101908414A (en) * | 2010-07-22 | 2010-12-08 | 吴江市变压器厂有限公司 | Method for manufacturing high-voltage lead wires of dry-type transformer |
| DE102012224101A1 (en) * | 2012-12-20 | 2014-06-26 | Continental Teves Ag & Co. Ohg | Method of manufacturing a sensor |
| CN107221420B (en) * | 2017-06-29 | 2024-01-09 | 苏州品翔电通有限公司 | Transformer framework and manufacturing method thereof |
| CN108597858B (en) * | 2018-05-28 | 2023-11-21 | 河南森源电气股份有限公司 | Shaping tool for outgoing line of low-voltage coil of transformer |
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Granted publication date: 20110525 Termination date: 20130424 |