CN102693809A - Easy-to-disassemble electromagnetic induction coil and manufacturing tool and manufacturing method thereof - Google Patents

Abstract

The invention relates to an easy-to-disassemble electromagnetic induction coil and a manufacturing tool and a manufacturing method thereof. The coil comprises a first tile-shaped skeleton and a second tile-shaped skeleton which is used for being correspondingly fastened with the first tile-shaped skeleton, wherein the two tile-shaped skeletons are provided with sunken parts which are oppositely fastened so as to form a central hole of the coil, the fastening surfaces of the two tile-shaped skeletons are correspondingly provided with electric connectors for mutual inserting when the two tile-shaped skeletons are fastened with each other, each tile-shaped skeleton is provided with a set of conductor sections, and each terminal of the conductor section is respectively correspondingly connected with each terminal of the electric connector of the tile-shaped skeleton at which the conductor section is located, so that when the two tile-shaped skeletons are fastened with each other, the conductor sections are formed into a spiral coil. According to the invention, the convenience in measuring and assembling is achieved; and because a plug-and-socket (electric connector) form is adopted, the electrical connection of two half conductor sections is enhanced, and the reliability is improved.

Description

A kind of electromagnetic induction coil of being convenient to disassemble and manufacturing frock and manufacturing approach

Technical field

The present invention relates to a kind of electromagnetic induction coil of being convenient to disassemble, the nondestructive electromagnetic that conveniently is applied to the core material defective detects.

Background technology

The nondestructive electromagnetic of ferromagnetic material defective detects and usually adopts several different methods such as main flux detection method, stray field detection method, magnetic resistance detection method and magnetic permeability detection method.Comprehensive these methods generally are to adopt magnetizer (electromagnet) generation alternating magnetic field and act on measured piece.When measured material causes that because of defective etc. magnetic field parameter (magnetic flux, leakage field, magnetic resistance, magnetic permeability etc.) changes.Inductor (induction coil, magnetic, record magnetic, Hall element, fluxgate or the like) is measured the variable quantity of magnetic field parameter and is compared with the magnetic field parameter defect characteristic, realizes defects detection.

Nondestructive electromagnetic detects with coil research and receives scientific worker's attention always.For example Deutsche Thomson-Brandt GmbH has designed a kind of coil that has iron core and in basic unit, be provided with as lead.This coil forms 1 circle lead through each basic unit, emerges on the one or more juts on its top and terminal each comfortable basic unit outer rim.Stretch out an iron core from jut, the circle of attending basic unit at this iron core is connected each other.Through suitable size Selection, can remain loss and the eddy current loss that the top layer effect produces very low.Britain Si Tela Engineering Co., Ltd designs the spatial placement of a plurality of coils, thereby eliminates partial discharge, reduces the electrical interference of radio frequency detectable system.The coil of Japan TDK Corp. invention is started with from splicing thread portion of terminal mechanical strength, has designed the coil device of a kind of resistance to impact and vibration resistance.The lead that a kind of utilization is drawn has been invented by Japan Alps Electric Co., Ltd from coiling portion, the coil of form good rigidly, reeling easily.Nippondenso Co., Ltd. has invented and has prevented to twine the solenoid that caves in.A kind of flexible coil has been invented by Japan Sumida Corp..

In the nondestructive electromagnetic of ferromagnetic material defective detects; Since detected member usually need pass magnet exciting coil or (with) induction coil; And conventional coil normally inconvenience disassemble, therefore, this detection system usually need disassemble detected member from its original equipment; Import in the special induction coil again and detect, operation is inconvenience very.

Patent " open-close type solenoid " (Chinese patent number 03209515.5) discloses a kind of open-close type solenoid, and it comprises left pawl and the right pawl that can enclose coil.The head of left side pawl is connected through clamping device with the head of said right pawl.The root of left side pawl and right pawl is respectively arranged with collecting ring.Collecting ring is connected on the closing device.Owing to this design employing collecting ring is set up the link that is wrapped in the lead on the pawl of the left and right sides, therefore this design employing pneumatic means provides and adds the power of holding, so system configuration is complicated, and is also inapplicable for the detection of small-sized oval workpiece.

Summary of the invention

The purpose of this invention is to provide a kind of simple in structure, the electromagnetic induction coil of conveniently disassembling, complicated in order to solve existing open-close type loop construction, be not suitable for the problem that miniaturized component detects.In addition, the present invention also provides a kind of manufacturing frock and manufacturing approach, and making frock is the welding auxiliary block that a kind of welding lead is used.

For realizing above-mentioned purpose; Coil version of the present invention is: a kind of electromagnetic induction coil of being convenient to disassemble; This coil comprise first watt of shape skeleton and with the second watt of shape skeleton that is used for first watt of corresponding snapping of shape skeleton, two watts of shape skeletons have and are used for the depressed part that make-up forms the hub of a spool hole, the corresponding electric connector that is used for mutual inserting when two watts of shape skeleton snappings that is provided with on the snapping face of two watts of shape skeletons; Each watt shape skeleton is provided with one group of conducting line segment; Each terminal of guide section is distinguished corresponding connection with each terminal of the electric connector of place watt shape skeleton, so that when two watts of shape skeleton snappings, said conducting line segment forms solenoid.

Said two watts of the shape cross-section of its skeleton side of being arches, dome-shaped or other arches.

Electric connector on said first watt of shape skeleton snapping face is a contact pin, and the electric connector on said second watt of shape skeleton snapping face is a jack; Electric connector on perhaps said first watt of shape skeleton snapping face is a jack, and the electric connector on said second watt of shape skeleton snapping face is a contact pin.

Be equipped with the over cap of guardwire section on the outer peripheral face of said two watts of shape skeletons, be filled with the filler that is used for fixing with the guardwire section between the outer peripheral face of over cap and watt shape skeleton.

The lead of said conducting line segment is an insulated conductor.

Every group of conducting line segment comprises one deck insulated conductor at least, and two-layer above insulated conductor lap wound is provided with.

Manufacturing frock scheme of the present invention is: a kind of manufacturing frock of electromagnetic induction coil; Said frock comprises a block body; The middle part of pedestal one side has the suitable lug boss of depressed part that is used for electromagnetic induction coil watt shape skeleton, and the lug boss both sides are provided with and are used for the hole suitable with electric connector.

Be provided with adjustable compressing structure around the said hole.Said adjustable compressing structure is making leaf spring and adjustment screw.

Manufacturing approach scheme of the present invention is: a kind of manufacturing approach of electromagnetic induction coil, at first, calculate the conducting line segment length of winding on watt shape skeleton; Then electric connector is fixed in the said hole, and will have calculated the conducting line segment of length and the corresponding welding of each terminal on the electric connector; The electric connector that will weld conducting line segment at last is assembled together with a watt shape skeleton.

The invention provides a split type coil, form by two watts of shape skeleton snappings, corresponding installation electric connector on the snapping face, and, when snapping together, make conducting line segment form complete solenoid according to the winding mode on two watts of shape skeletons.So the present invention has realized measuring the convenience of assembling; Owing to adopt plugs and sockets (electric connector) form; Strengthen being electrically connected of two halves conducting line segment, improved reliability, also made coil adapt to the measured workpiece of different structure size within the specific limits simultaneously.

Description of drawings

Fig. 1 is the coil block sketch map of band plug;

Fig. 2 is a band plug cord coil assembly sketch map of cutting protective sleeve open;

Fig. 3 is the coil block sketch map of band socket;

Fig. 4 is a square coil assembly sketch map;

Fig. 5 is a conducting line segment length computation illustraton of model;

Fig. 6 is the welding auxiliary block sketch map of circular coil;

Fig. 7 is a conducting line segment and the sketch map that is connected of plug (socket);

Fig. 8 is a conducting line segment and the sketch map that is connected of socket (plug).

Embodiment

Below in conjunction with accompanying drawing the present invention is done further detailed explanation.

Coil embodiment

Fig. 1-shown in Figure 3 for the detection cross section is the instance of the electromagnetic induction coil of dome-shaped is applicable to columniform element to be detected.Whole winding is formed with coil block (Fig. 3) snapping of being with socket by the coil block (Fig. 1, Fig. 2) of band plug.

Like Fig. 1, Fig. 2, Fig. 3, this coil of coil block of band plug comprises first watt of shape skeleton 1, and the coil block of band socket comprises that 6, two watts of shape skeletons of second watt of shape skeleton have the depressed part that is used to place element to be detected; Be respectively equipped with plug 2 and socket 7 on the snapping face of two watts of shape skeletons; Be arranged with one group of coiling section 3 on first watt of shape skeleton 1; Be equipped with the over cap 4 of guardwire section on the outer peripheral face; Be filled with the filler that is used for fixing with guardwire section 3 between over cap 4 and the conducting line segment 3,4a is a filler opening, each splicing ear on the plug 2 and the corresponding connection in each termination of conducting line segment 3.Has the bonnet lock hole 1b that combines with the coil block of band socket on first watt of shape skeleton 1.Filler is after component groups installs, and fills through the hole 4a on the over cap 4, can adopt conduct fillings such as foamed glue, with fixing cord section 3.

The coil block of band socket comprises second watt of shape skeleton 6; Also be arranged with one group of coiling section (not drawing among the figure) on second watt of shape skeleton 6; Be equipped with the over cap 40 of guardwire section on the outer peripheral face; Also be filled with filler between over cap 40 and the conducting line segment, the corresponding connection in each termination of the conducting line segment on each splicing ear on the socket 7 and the second watt of shape skeleton 6.Second watt of shape skeleton 6 has the snap close 6a that combines with the coil block of band plug, the screw-nut 5 of fastening socket 7 and second watt of shape skeleton 6.

Over cap 4,40 is processed by insulating material, is the lid that coil is wrapped up, and main effect is to prevent to bump to scrape lead, dustproof, waterproof etc.

During two watts of shape skeleton snappings, their two groups of conducting line segment correspondences are connected to form a solenoid.The coil block of band plug is pegged graft from the both sides of detected member respectively with the coil block of band socket relatively, surrounds detected member, constitutes an induction coil, and lead-out wires of coil is connected with detecting instrument, detects.

Conducting line segment is insulated conductor, and is as shown in the figure, corresponding with electric connector (plug, socket), be divided into 4 range upon range of around.Annexation between the conducting line segment such as Fig. 7 and shown in Figure 8.The coil block of band socket is as shown in Figure 7, and 1a connects I A; 1b connects I B; 1c connects I C ... 2a connects IIA; 2b connects IIB; 2c connects IIC ... 3a connects IIIA; 3b connects IIIB; 3c connects IIIC ... And the like.When the coil block of plug is with in welding, should be according to connected mode welding shown in Figure 8.On the metal terminal 1a of a lead-out wire attachment plug 2, another lead-out wire is connected on the metal terminal IVA of plug 2, and then with the respective metal terminal of lead by following connected mode attachment plug 2: 1b connects I A, and 1c connects I B; 1d connects I C, connects by this rule, connects I U until 1v, then; 2v connects I V, and then, 2u connects II V, and 2t connects II U; 2s connects II T, connects by this rule, connects II B until 2a, and 3a connects II A; 3b connects IIIA, and 3c connects IIIB, and 3d connects IIIC ... Connect other metal terminals as stated above.

When on two coil blocks the wire hole of lead-out wire being arranged all, also can the coil block of band socket be welded by rule shown in Figure 8, the coil of band plug is pressed rule welding shown in Figure 7.

Make frock embodiment

Make frock, i.e. the welding auxiliary mould of a kind of special use, as shown in Figure 6.Connect auxiliary block and comprise a block body 8, the middle part of pedestal one side has the suitable lug boss of sunk part that is used for watt shape skeleton, and the lug boss both sides are provided with the plug that is used for fixing on the snapping face or the hole 8a of socket; Be provided with adjustable compressing structure around the 8a of hole, i.e. making leaf spring 9 and adjustment screw 10.

The wherein critical feature size of pedestal such as the r1 among Fig. 6, u and v etc. should be consistent with first watt of shape skeleton 1 and second watt of shape skeleton 6 correspondingly-sized in the coil block.Before the welding, earlier plug or socket are put into the hole 8a on the pedestal 8 that welds auxiliary block, will compress reed 9 rotations until compressing plug or socket, then the welding lead section.

Manufacturing approach embodiment

The concrete manufacturing process of the making of a coil is following:

1) conducting line segment and computational length are cut in stripping: one-tenth is coiled the stripping of tinned conductor dress be cut into conducting line segment, can adopt manual mode also can on automatic stripping machine, cut stripping.Conducting line segment length is calculated according to the specifications and models of induction coil and the physical dimension of connector.

Can calculate by illustraton of model shown in Figure 5 when calculating conductor length.R is the internal diameter of coil block watt shape skeleton 1 or 6 circular arc portions among Fig. 5; T is the thickness of watt shape skeleton 1 or 6 circular arc portions; P is that plug or socket lean on the distance of one socket pin center, lining to watt shape skeleton 1 or 6 circular arc portion outer surfaces most in the assembly; M is the spacing of plug or the adjacent two socket pins of socket, and q is the distance of the bottom surface, hole of grafting conducting line segment 3 in the contact pin to the assembly faying face, then leans on most the length 11 of inboard row's conducting line segment to do

$\mathrm{<figure-callout\; id="1"\; label="l"\; filenames="HDA0000128654410000011.png,HDA0000128654410000012.png"\; state="\{\{state\}\}">l</figure-callout>}1=\frac{2\mathrm{\&pi;}(r+t+p)}{2}-2n=\mathrm{\&pi;}(r+t+p)-2q$

The length 12 of several second row's conducting line segments does from the inboard

$\mathrm{<figure-callout\; id="2"\; label="l"\; filenames="HDA0000128654410000011.png,HDA0000128654410000032.png"\; state="\{\{state\}\}">l</figure-callout>}2=\frac{2\mathrm{\&pi;}(r+t+p+m)}{2}-2q=\mathrm{\&pi;}(r+t+p+m)-2q$

The length 13 of several the 3rd row's conducting line segments does from the inboard

$\mathrm{<figure-callout\; id="3"\; label="l"\; filenames="HDA0000128654410000011.png,HDA0000128654410000012.png"\; state="\{\{state\}\}">l</figure-callout>}3=\frac{2\mathrm{\&pi;}(r+t+p+2m)}{2}-2q=\mathrm{\&pi;}(r+t+p+2m)-2q$

Usually, the length of several n row conducting line segments does from the inboard

$\ln =\frac{4\mathrm{\&pi;}[r+t+p+(n-1)m]}{2}-2q=[r+t+p+(n-1)m]-2q$

The quantity of all lengths lead should be configured according to the metal end subnumber of plug and socket.

2) immersed solder material: scolder is heated to complete melting state with electric furnace; Add an amount of rosin and remove oxidized portion,, dip in and vertically behind the scaling powder immerse the 3mm left and right sides degree of depth in the scolder then with conducting line segment heart yearn exposed part alignment; Immerse back taking-up about 2s, require the mellow and full light of immersed solder material part.The restringing section other end is used with quadrat method immersed solder material.

3) connect lead and plugs and sockets: plug, socket are placed on welding auxiliary block (manufacturing frock) lug boss two ends, are fixed with adjustable compressing structure, the conducting line segment that will soak scolder is welded on respectively on each terminal of plug, socket.

4) assembling inductive coil assembly: earlier lead-out wire is passed the wire hole on watt shape skeleton; The plug or the socket of conducting line segment 3 be will weld then and watt shape skeleton 1 or 6 relevant positions put into; Again with screw-nut 5 with watt shape skeleton 1 or 6 and plug or socket fastening; Cover over cap 4,40, over cap 4,40 connects with also adopting buckle structure being connected of watt shape skeleton 1 or 6.At last with foamed glue in the filler opening fill assembly of over cap.

5) be combined into coil: the coil block that will have plug is pegged graft with the coil block of band socket relatively, forms induction coil.

Claims (10)

1. electromagnetic induction coil of being convenient to disassemble; It is characterized in that; This coil comprise first watt of shape skeleton and with the second watt of shape skeleton that is used for first watt of corresponding snapping of shape skeleton, two watts of shape skeletons have and are used for the depressed part that make-up forms the hub of a spool hole, the corresponding electric connector that is used for mutual inserting when two watts of shape skeleton snappings that is provided with on the snapping face of two watts of shape skeletons; Each watt shape skeleton is provided with one group of conducting line segment; Each terminal of guide section is distinguished corresponding connection with each terminal of the electric connector of place watt shape skeleton, so that when two watts of shape skeleton snappings, said conducting line segment forms solenoid.

2. a kind of electromagnetic induction coil of being convenient to disassemble according to claim 1 is characterized in that, said two watts of the shape cross-section of its skeleton side of being arches, dome-shaped or other arches.

3. a kind of electromagnetic induction coil of being convenient to disassemble according to claim 1 is characterized in that, the electric connector on said first watt of shape skeleton snapping face is a contact pin, and the electric connector on said second watt of shape skeleton snapping face is a jack; Electric connector on perhaps said first watt of shape skeleton snapping face is a jack, and the electric connector on said second watt of shape skeleton snapping face is a contact pin.

4. a kind of electromagnetic induction coil of being convenient to disassemble according to claim 1; It is characterized in that; Be equipped with the over cap of guardwire section on the outer peripheral face of said two watts of shape skeletons, be filled with the filler that is used for fixing with the guardwire section between the outer peripheral face of over cap and watt shape skeleton.

5. a kind of electromagnetic induction coil of being convenient to disassemble according to claim 4 is characterized in that the lead of said conducting line segment is an insulated conductor.

6. a kind of electromagnetic induction coil of being convenient to disassemble according to claim 5 is characterized in that, every group of conducting line segment comprises one deck insulated conductor at least, and two-layer above insulated conductor lap wound is provided with.

7. manufacturing frock of making electromagnetic induction coil as claimed in claim 1; It is characterized in that; Said frock comprises a block body; The middle part of pedestal one side has the suitable lug boss of depressed part that is used for electromagnetic induction coil watt shape skeleton, and the lug boss both sides are provided with and are used for the hole suitable with electric connector.

8. manufacturing frock according to claim 7 is characterized in that, is provided with adjustable compressing structure around the said hole.

9. manufacturing frock according to claim 8 is characterized in that, said adjustable compressing structure is making leaf spring and adjustment screw.

10. utilize the said frock of claim 7 to make the method for electromagnetic induction coil, it is characterized in that, at first, calculate the conducting line segment length of winding on watt shape skeleton; Then electric connector is fixed in the said hole, and will have calculated the conducting line segment of length and the corresponding welding of each terminal on the electric connector; The electric connector that will weld conducting line segment at last is assembled together with a watt shape skeleton.

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