CN101521077B - Discharge coil for electromagnetic riveter and production method thereof - Google Patents
Discharge coil for electromagnetic riveter and production method thereof Download PDFInfo
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- CN101521077B CN101521077B CN2008102324584A CN200810232458A CN101521077B CN 101521077 B CN101521077 B CN 101521077B CN 2008102324584 A CN2008102324584 A CN 2008102324584A CN 200810232458 A CN200810232458 A CN 200810232458A CN 101521077 B CN101521077 B CN 101521077B
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Abstract
The invention discloses a discharge coil for an electromagnetic riveter, wherein the center of the coil is a core tube, an initial end of a copper strip is welded with the core tube, the core tube is The invention discloses a discharge coil for an electromagnetic riveter, wherein the center of the coil is a core tube, an initial end of a copper strip is welded with the core tube, the core tube issiating hole at the center of the coil improves heat dissipation conditions of the coil and reduces the temperature rise speed of the coil; the whole coil is packaged in the shell so as to ensure thatdiating hole at the center of the coil improves heat dissipation conditions of the coil and reduces the temperature rise speed of the coil; the whole coil is packaged in the shell so as to ensure thatthe coil can bear larger impact load; and the design of a partition improves the insulating property of the coil. the coil can bear larger impact load; and the design of a partition improves the insulating property of the coil.urrounded by layers of the copper strip wrapped by glass fabric, the continuous copper strip forms a cake-shaped disc in a shell, a round insulating board is arranged on the cake-shaped disc, the censurrounded by layers of the copper strip wrapped by glass fabric, the continuous copper strip forms a cake-shaped disc in a shell, a round insulating board is arranged on the cake-shaped disc, the center of the insulating board is a through hole matched with the upper end of the core tube, a supporting plate is arranged on the insulating board, an insulating layer is arranged on the supporting plater of the insulating board is a through hole matched with the upper end of the core tube, a supporting plate is arranged on the insulating board, an insulating layer is arranged on the supporting plate, a connecting line is fixedly connected with a countersunk nut on the shell, and the supporting plate is supported against two countersunk square nuts. The invention also discloses a method for prote, a connecting line is fixedly connected with a countersunk nut on the shell, and the supporting plate is supported against two countersunk square nuts. The invention also discloses a method for producing the discharge coil. The countersunk nuts are adopted, so the external dimension of the coil is reduced and the coil can be conveniently arranged into a small-scale electromagnetic riveter; a raducing the discharge coil. The countersunk nuts are adopted, so the external dimension of the coil is reduced and the coil can be conveniently arranged into a small-scale electromagnetic riveter; a rad
Description
Technical field
The present invention relates to a kind of discharge coil, particularly discharge coil for electromagnetic riveter, also relate to the manufacture method of this discharge coil.
Background technology
Electromagnetic riveting technology is used widely at aerospace field, and as the core components and parts of electromagnetic rivetter, discharge coil has material impact to the performance of electromagnetic rivetter.Electromagnetic rivetter generally has two coils, and primary coil generally is the multiturn pancake coil that twines, and also claims discharge coil, and secondary coil is generally has certain thickness aluminium sheet or copper coin.Discharge coil is the key components of electromagnetic rivetter, and its condition of work is very harsh.Discharge coil need bear the impulse current of tens thousand of peaces during riveted joint, and bears bigger impact loading, and turn-to-turn will bear tens of even go up kilovoltage; In order to guarantee insulation safety, the coil total needs sealing.But hermetically-sealed construction causes very difficulty of coil heat radiation.Coil discharge can produce a large amount of heats, if there is not good cooling system, temperature can constantly raise during coil working, and coil will destroy when temperature surpasses the allowable temperature of insulating resin.In addition, owing to need bear tens thousand of amperes impulse current, sparking will not occur if two joint contacts of coil are firm, the long-term work meeting causes joint to destroy.
With reference to Fig. 4～5.Document 1 " patent No. is 4091260 United States Patent (USP) " discloses a kind of discharge coil of U.S. Ge Lumen company, comprises bolt 1, copper strips 9, glass fabric 11 and suture 12.Two bolts 1 are fixed together copper strips 9 and power lead, and copper strips 9 usefulness glass fabrics 11 parcels are sewed up with suture 12 then.The shortcoming that this coil exists is the production process complexity.At first, sew up with suture 12 again, twine again at last copper strips 9 usefulness glass fabrics 11 parcels; Fixedly copper strips 9 exposes with the head of two bolts of power lead, has increased the coil shape size, can only be used for fixing the formula electromagnetic rivetter, be not suitable for being contained in to the coil dimension requirement little, and on the portable electromagnetism riveting gun that can conveniently move.
With reference to Fig. 6.Document 2 " patent No. is 0293257 European patent " discloses a kind of electromagnetic pulse actuator, and its coil is wrapped in copper strips 9 on the core pipe 5, and its core pipe 5 usefulness nylon rods process, and the copper strips 9 of winding around is directly drawn the formation joint.The deficiency that this discharge coil exists is that the coil bulk strength is poor, and the coil heat dispersion is bad, must cool off in real time coil.In addition, copper strips 9 and power line be connected inconvenience, must the special joint of design.
Summary of the invention
In order to overcome the deficiency that the coil shape size is big, production process is complicated of prior art, the invention provides a kind of discharge coil for electromagnetic riveter, adopt countersunk nut, can reduce the coil shape size.
For the deficiency of the coil production process complexity that overcomes prior art, the present invention also provides the manufacture method of this discharge coil for electromagnetic riveter, adopts glass fabric looping copper strips, and production process is oversimplified.
The technical solution adopted for the present invention to solve the technical problems: a kind of discharge coil for electromagnetic riveter, comprise the core pipe, shell, copper strips, glass fabric, be characterized in also comprising supporting bracket, insulation board, hold-down bolt, insulating barrier, dividing plate and countersunk nut, hub of a spool is the core pipe of copper material, the initiating terminal of copper strips and the welding of core pipe, around the core pipe is the copper strips from level to level of glass fabric parcel, continuous copper strips forms cheese garden dish in the enclosure, there is boss the upper end of core pipe, the boss inwall is the screw thread that matches with hold-down bolt, above the dish of cheese garden is circular insulating board, the center of insulation board is the through hole that cooperates with core pipe upper end, and the outer rim of insulation board and outer casing inner wall etc. are big, are supporting bracket above the insulation board, it above the supporting bracket insulating barrier, hold-down bolt is a hollow shape, and the centre bore of its centre bore and supporting bracket and insulating barrier etc. are big, and hold-down bolt is pushed down an end of core pipe and connecting line, a countersunk nut on the other end of connecting line and the shell is connected, as an electrode; The end of copper strips and another countersunk nut on the shell are connected, and draw as another electrode; Supporting bracket and shell closely cooperate, and two countersunk nuts are withstood, and the head of countersunk nut is square, and screw portion is circular, and screw portion passes shell and concordant with shell from inside to outside, and outer casing inner wall has the square opening that is complementary with the countersunk nut nose shape; Be dividing plate on the working surface of coil bottom, dividing plate and coil glued joint.
A kind of manufacture method of above-mentioned discharge coil for electromagnetic riveter is characterized in may further comprise the steps:
(a) copper strip surface of selecting for use is polished, and surperficial with the acetone cleaning;
(b) with copper strips one end and the welding of core pipe, the other end and a countersunk nut welding;
(c) dividing plate is placed the winding die surface, be pressed onto the core pipe on the dividing plate and be fixed on and twine on the mould, the initiating terminal of glass fabric is twined the initiating terminal of copper strips;
(d) glass fabric is wound into uniformly on the copper strips and coated insulating resin, simultaneously, the copper strips that twines glass fabric is twined around the core pipe;
(e) pancake coil that winding is finished is pressed in the coil case;
(f) insulation board is put into shell, and in each slit, pour into insulating resin;
(g) supporting bracket is pressed in the shell, holds out against two countersunk nuts;
(h) solidify insulating barrier and clear up the insulating resin that coil surface overflows, on corresponding insulating barrier of hub of a spool and supporting bracket, bore louvre.
The invention has the beneficial effects as follows:, reduced the overall dimension of coil, in the compact electromagnetic riveting gun of can packing into easily owing to adopt countersunk nut; The louvre of coil integral central has improved the radiating condition of coil, has reduced the temperature rise speed of coil; Whole winding is encapsulated in the shell, has improved the bulk strength of coil, has guaranteed that coil can bear bigger shock loading; The design of dividing plate has improved the insulation property of coil.
Below in conjunction with drawings and Examples the present invention is elaborated.
Description of drawings
Fig. 1 is the structure chart of discharge coil for electromagnetic riveter of the present invention.
Fig. 2 is the structural representation of supporting bracket among Fig. 1, countersunk nut and shell.
Fig. 3 is the structural representation of copper strips among Fig. 1, core pipe, countersunk nut and glass fabric.
Fig. 4 is the structure chart of prior art document 1 discharge coil.
Fig. 5 is the structural representation of copper strips and glass fabric among Fig. 2.
Fig. 6 is the structure chart of prior art document 2 coils.
Among the figure, the 1-bolt; The 2-supporting bracket; The 3-insulation board; The 4-hold-down bolt; 5-core pipe; The 6-insulating barrier; The 7-connecting line; The 8-shell; The 9-copper strips; The 10-dividing plate; The 11-glass fabric; The 12-suture; The 13-louvre; The 14-countersunk nut.
Embodiment
Discharge coil comprises supporting bracket 2, insulation board 3, hold-down bolt 4, core pipe 5, insulating barrier 6, shell 8, copper strips 9, dividing plate 10, glass fabric 11 and countersunk nut 14.Countersunk nut 14 has two, and its head is square, and screw portion is circular, and screw portion passes shell 8 and concordant with shell from inside to outside, and shell 14 inwalls have the square opening that is complementary with countersunk nut 14 nose shapes.Hub of a spool is the core pipe 5 that copper material is made, the lining that core pipe 5 twines as coil, around core pipe 5 are copper strips from level to level 9 of glass fabric 11 parcels, continuous copper strips 9 forms cheese garden dish in shell 8, there is boss the upper end of core pipe 5, the boss inwall is the screw thread that matches with hold-down bolt 4, the initiating terminal of copper strips 9 and the 5 usefulness brazings of core pipe are welded, there is screw thread the upper end of core pipe 5, cooperation by hold-down bolt 4, a core pipe 5 and an end of connecting line 7 are pushed down, and a countersunk nut 14 on the other end of connecting line 7 and the shell 8 is connected, as an electrode.Another countersunk nut 14 on the end of copper strips 9 and the shell 8 is connected, and draws as another electrode.Countersunk nut 14 and connecting line 7 are loosening when preventing that coil is subjected to impacting, and closely cooperate with supporting bracket 2 and shell 8, and two countersunk nuts 14 are withstood.Supporting bracket 2 can be Y-shaped, first quarter moon template or the passive shape of other energy.
Be circular insulating board 3 above the rosette copper band of cheese garden, the center of insulation board 3 is the through holes that cooperate with core pipe 5 upper ends, and the inwall of the outer rim of insulation board 3 and shell 8 etc. are big.Being supporting bracket 2 above the insulation board 3, is insulating barrier 6 above the supporting bracket 2, and hold-down bolt 4 is hollow shape, and the centre bore of its centre bore and supporting bracket 2 and insulating barrier 6 etc. are big.
For guaranteeing that coil has the good insulation performance, design has dividing plate 10 on the working surface of coil bottom.Casting insulated resin between dividing plate 10 and the coil working surface has just guaranteed firm being glued together between dividing plate and the coil after solidifying like this.Because dividing plate 10 and copper strips 9 performance differences are bigger, when the coil working temperature raises because dividing plate and the surperficial phenomenon of coming unstuck and separating of coil working may appear in thermal expansion.For addressing this problem, on dividing plate 10, get out many apertures specially, resin can fully flow into dividing plate to improve glue-joint strength during cast.
For guaranteeing to have the good insulation performance between coil turn, the present invention is twined the copper strips 9 of winding around earlier with glass fabric 11, give on the glass fabric 11 to apply insulating resin in winding process.
Insulating resin adopts shock-resistant and has better flowability and than the polyamine fat rubber of long-term job phase, guaranteed to have higher dielectric strength and good glue-joint strength and mechanical strength after coil solidifies.
The jointing of coil copper strips adopts the countersunk nut of imbedding shell, has reduced the overall dimension of coil and can guarantee smooth-shaped, so that inner mobile at riveting gun, it is reliable and easy for installation to guarantee that simultaneously jointing connects.
Can produce a large amount of heats, particularly hub of a spool in the coil working process, temperature is the highest.Because thermal expansion, the resin bed of hub of a spool part occurs separating with copper strips and causes the phenomenon of coil damage through regular meeting.For solving the too high problem of hub of a spool temperature, designed a louvre 13 at hub of a spool, reduced the temperature rise of hub of a spool.
The manufacture method of discharge coil is as follows:
The first step: copper strip surface is handled.For guaranteeing glue-joint strength, must polish to copper strip surface earlier, and clear up the surface with acetone.
Second step: copper strips 9 one ends and 5 welding of core pipe, the other end and countersunk nut 14 welding.
The 3rd step: copper strips is installed.Dividing plate 10 is put into the winding die surface, is pressed onto core pipe 5 on the dividing plate 10 and is fixed on and twine on the mould, the initiating terminal of glass fabric is twined copper strips and place, core pipe welding position.
The 4th step: the heating of insulating resin and vacuumizing.Technological requirement according to insulating resin heats, vacuumizes, and adds curing agent then, pours the glue box again into.
The 5th step: coil twines.Start wrapping machine, driven by motor is twined mould and is rotated, and copper strips is that continuous rotation the in center finished the coil winding with the core pipe.In winding process, glass fabric is wound on the copper strips uniformly and is coated on insulating resin.
The 6th step: the pancake coil that winding is finished is pressed into coil case 8.
The 7th step: insulation board 3 is put into coil case, and in each slit, pour into insulating resin.
The 8th step: supporting bracket 2 is pressed into solenoid housing 8, and two supporting members of supporting bracket 2 hold out against countersunk nut 14.
The 9th step: the condition of cure according to insulating resin solidifies insulating barrier 6.
The tenth step: the resin that the cleaning coil surface overflows, bore louvre 13 on corresponding insulating barrier 6 of hub of a spool and supporting bracket 2.
The finished product coil does not damage more than 10000 times through the riveted joint condition test.
Claims (5)
1. discharge coil for electromagnetic riveter, comprise the core pipe, shell, copper strips, glass fabric, it is characterized in that: also comprise supporting bracket, insulation board, hold-down bolt, insulating barrier, dividing plate and countersunk nut, hub of a spool is the core pipe of copper material, the initiating terminal of copper strips and the welding of core pipe, around the core pipe is the copper strips from level to level of glass fabric parcel, continuous copper strips forms cheese garden dish in the enclosure, there is boss the upper end of core pipe, the boss inwall is the screw thread that matches with hold-down bolt, above the dish of cheese garden is circular insulating board, the center of insulation board is the through hole that cooperates with core pipe upper end, and the outer rim of insulation board and outer casing inner wall etc. are big, are supporting bracket above the insulation board, it above the supporting bracket insulating barrier, hold-down bolt is a hollow shape, and the centre bore of its centre bore and supporting bracket and insulating barrier etc. are big, and hold-down bolt is pushed down an end of core pipe and connecting line, a countersunk nut on the other end of connecting line and the shell is connected, as an electrode; The end of copper strips and another countersunk nut on the shell are connected, and draw as another electrode; Supporting bracket and shell closely cooperate, and two countersunk nuts are withstood, and the head of countersunk nut is square, and screw portion is circular, and screw portion passes shell and concordant with shell from inside to outside, and outer casing inner wall has the square opening that is complementary with the countersunk nut nose shape; Be dividing plate on the working surface of coil bottom, dividing plate and coil glued joint.
2. discharge coil for electromagnetic riveter according to claim 1 is characterized in that: described supporting bracket is Y-shaped or first quarter moon template.
3. discharge coil for electromagnetic riveter according to claim 1 is characterized in that: some apertures are arranged on the described dividing plate.
4. discharge coil for electromagnetic riveter according to claim 1 is characterized in that: described insulating barrier is a polyamine fat rubber.
5. the manufacture method of the described discharge coil for electromagnetic riveter of claim 1 is characterized in that may further comprise the steps:
(a) copper strip surface of selecting for use is polished, and surperficial with the acetone cleaning;
(b) with copper strips one end and the welding of core pipe, the other end and a countersunk nut welding;
(c) dividing plate is placed the winding die surface, be pressed onto the core pipe on the dividing plate and be fixed on and twine on the mould, the initiating terminal of glass fabric is twined the initiating terminal of copper strips;
(d) glass fabric is wound into uniformly on the copper strips and coated insulating resin, simultaneously, the copper strips that twines glass fabric is twined around the core pipe;
(e) pancake coil that winding is finished is pressed in the coil case;
(f) insulation board is put into shell, and in each slit, pour into insulating resin;
(g) supporting bracket is pressed in the shell, holds out against two countersunk nuts;
(h) solidify insulating barrier and clear up the insulating resin that coil surface overflows, on corresponding insulating barrier of hub of a spool and supporting bracket, bore louvre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102324584A CN101521077B (en) | 2008-11-28 | 2008-11-28 | Discharge coil for electromagnetic riveter and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102324584A CN101521077B (en) | 2008-11-28 | 2008-11-28 | Discharge coil for electromagnetic riveter and production method thereof |
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| Publication Number | Publication Date |
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| CN101521077A CN101521077A (en) | 2009-09-02 |
| CN101521077B true CN101521077B (en) | 2010-12-01 |
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| CN2008102324584A Expired - Fee Related CN101521077B (en) | 2008-11-28 | 2008-11-28 | Discharge coil for electromagnetic riveter and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106710777A (en) * | 2017-03-15 | 2017-05-24 | 福州大学 | Electromagnetic forming coil structure and manufacturing method thereof |
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| CN104779029B (en) * | 2015-04-24 | 2017-05-10 | 福州大学 | Double-layer coil for electromagnetic formation and manufacturing method of double-layer coil |
| CN105761900B (en) * | 2016-04-25 | 2018-04-13 | 福州大学 | A kind of electromagnetic riveting coil and preparation method thereof |
| CN105761928B (en) * | 2016-05-05 | 2017-07-18 | 西北工业大学 | A kind of automatic wrapping machine for discharge coil |
| CN106158226B (en) * | 2016-08-26 | 2018-02-09 | 西北工业大学 | A kind of discharge coil and preparation method thereof |
| CN110060866B (en) * | 2019-05-30 | 2024-01-26 | 福州大学 | Coil winding device for electromagnetic riveting and working method thereof |
| CN110586842B (en) * | 2019-10-16 | 2024-03-08 | 哈工大机器人（岳阳）军民融合研究院 | Electromagnetic riveting device for large-size thin-wall workpiece |
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2008
- 2008-11-28 CN CN2008102324584A patent/CN101521077B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710777A (en) * | 2017-03-15 | 2017-05-24 | 福州大学 | Electromagnetic forming coil structure and manufacturing method thereof |
| CN106710777B (en) * | 2017-03-15 | 2018-05-04 | 福州大学 | A kind of electro-magnetic forming loop construction and preparation method thereof |
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| CN101521077A (en) | 2009-09-02 |
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Granted publication date: 20101201 Termination date: 20131128 |