CN206329616U

CN206329616U - A kind of electric permanent-magnet suction disc device of Based Intelligent Control mold changing

Info

Publication number: CN206329616U
Application number: CN201621413473.5U
Authority: CN
Inventors: 李锵华; 方刘文
Original assignee: Foshan Shunde Shengqiangde Magnetic Technology Co Ltd</en>
Current assignee: Foshan Shunde Shengqiangde Magnetic Technology Co Ltd</en>
Priority date: 2016-12-20
Filing date: 2016-12-20
Publication date: 2017-07-14
Anticipated expiration: 2026-12-20

Abstract

The utility model discloses the electric permanent-magnet suction disc device of Based Intelligent Control mold changing, several blind nibs are set in template, when magnetic strength element being installed on blind nib, it is put into order, the present invention either uses the neodymium iron boron circle of only S poles magnetic only with the neodymium iron boron circle of only N poles magnetic, there can not be bipolarity to exist simultaneously, when using the only neodymium iron boron circle of N poles magnetic, S poles magnetic will be exempted, the neodymium iron boron circle of N poles magnetic is to iron, the suction of steel part is bigger, exempting S poles magnetic can prevent that N poles magnetic and S poles magnetic are attracting and consume part permanent magnet, N poles magnetic neodymium iron boron circle can concentrate magnetic force attracting with absorbate after exempting the interference of S poles, inhale absorbate it is more steady, unipolar neodymium iron boron is more than more than 30% than the suction of bipolarity neodymium iron boron, that is 30% magnetic attraction can at least be improved, circumferential groove can be such that magnetic force more concentrates, improve magnetic ability, single blind nib is installed magnetic strength element and easily pinpointed the problems and being capable of quick detection, repair, improve production efficiency, reduce production cost.

Description

A kind of electric permanent-magnet suction disc device of Based Intelligent Control mold changing

Technical field

The utility model is related to magnetic attracting device field, specifically a kind of electric permanent-magnet suction disc device of Based Intelligent Control mold changing.

Background technology

What old-fashioned electric permanent-magnet suction disc installed magnet assemblies is all to set one big mould to cheat in the front or back of mould, some Individual monomer magnetic group is arranged in mould hole, is then filled with resin, and filling bonnet upper cover plate plays the effect such as waterproof, preventing offsetting, Magnetic interference is excessive between the magnet of some monomer magnet assemblies of this one big mould hole placement, and force of suction cup weakens, and influences magnetic Power is to front transfer.Existing sucker magnetic induction loop device is designed with two kinds of N, S pole simultaneous neodymium iron boron of magnetic, because N, S Polarity is the polarity that there is a natural attraction between the sexes, and when magnetic induction loop is powered, N poles magnetic can not be transmitted unanimously to same direction, i.e. N poles magnetic Not only with S polarity it is attracting but also with it is attracting by suction metal object, the object really to be inhaled actually is only by suction metal object, still, S polarity Attracting and N poles magnetic is reduced when attracting to by the suction of suction metal object, causing, to being reduced by suction metal object suction, to cause to inhale Power is unstable, and N, S pole magnetic are attracting and consume one part permanent magnetism, cause magnetic force to weaken；Existing permanent magnetic chuck has N, S pole magnetic Property, N poles are used to magnetize, then S poles are just used to receive magnetic, if S poles are used to magnetize, then N poles are just used to receive magnetic, and the two poles of the earth lack one not Can；In addition, old-fashioned magnetic induction loop is inconvenient in maintenance, installation, dismounting, debugging process, the adhesive tape curled is needed around some Circle, cost of labor greatly increases, and the tape thickness manually laid out is difficult to homogeneous, strong/weak equal of magnetic when influence is powered One property.

Utility model content

In order to solve the above-mentioned technical problem, the utility model provides a kind of rational in infrastructure, production cost is low, magnetic attraction is big, Exempt the electric permanent-magnet suction disc device of S poles magnetic, only the Based Intelligent Control mold changing of N poles magnetic in neodymium iron boron.

Solve above-mentioned technical problem scheme be：

The electric permanent-magnet suction disc device of Based Intelligent Control mold changing, electric permanent-magnet suction disc device includes template (1), the reverse side of template (1) Provided with several blind nibs (11), the top between blind nib (11) is provided with lead breach (12), each blind nib (11) bottom Intermediate projections have the cylinder (101) being connected as a single entity with template (1), and ring is formed between cylinder (110) and blind nib (11) die wall The unipolarity neodymium iron boron consistent with cylinder (101) pillar height is set with circumferential groove (102) around cylinder (101), circumferential groove (102) Enclose (103), be adjacent on unipolarity neodymium iron boron circle (103) in the middle of axle housing (2), axle housing (2) and be provided with through hole (21), outer upper end to Flange one (22) is extended with outside, outer lower end portion is extended with flange two (23), and flange two (23) is extended with the tooth-like fin of software (231)；Winding slot (24) is formed between described flange one (22) and flange two (23), winding slot is wound with copper cash on (24) (25), axle housing (2) toward blind nib (11) fill in when the tooth-like fin of software (231) by blind nib (11) diameter limitation by software Tooth-like fin (231) is flipped up, and axle housing (2) is fully inserted into after blind nib (11), and the tooth-like fin of software (231) is by copper cash (25) The magnetic induction loop of electric permanent-magnet suction disc is wrapped to form, the magnetic induction loop copper cash (25) in each blind nib (11) is passed through by conductor to be drawn Line breach (12) is connected in parallel, and forms the magnetic induction loop parallel-connection network being made up of some monomer magnetic induction loops, magnetic induction loop and monopole Property neodymium iron boron circle (103) perpendicular corresponding states；It is set with described through hole (21) high consistent with through hole (21) diameter and hole Al-Ni-Co permanent magnet block (26)；Described template (1) rear is provided with template lid (3), and template lid (3) passes through template (1) reverse side Screw is tightened up fixed mode and connected all comprehensive coverings including blind nib (11) aperture.

Preferred scheme：Blind screw hole (201) is provided with the top of described cylinder (101)；Described Al-Ni-Co permanent magnet block (26) Centre is provided with screw through-hole (261)；Template (1) reverse side is passed through template lid (3), aluminium nickel by described template lid (3) by screw The screw through-hole (261) of cobalt permanent magnets (26) is tightened on the blind screw hole (201) at the top of cylinder (101) and tightens up fixed mode Connection covers in the aperture of all blind nibs (11) comprehensively.

Preferred scheme：Described template (1), template lid (3) are rectangle, and corner is equipped with for installing guide pillar positioning and sliding Dynamic arc angle position (31).

Preferred scheme：Vertical corresponding template (1) appearance of described circumferential groove (102) is provided with concave type annular groove (104), Vertical corresponding template (1) appearance of its cylinder (101) is raised protrusion (105).

Preferred scheme：Described unipolarity neodymium iron boron circle (103) is by some pieces of arc unipolarity neodymium iron boron collar member (1031) And connect to be formed.

Preferred scheme：Described unipolarity neodymium iron boron circle (103) is the neodymium iron boron circle either only S of only N poles magnetic The neodymium iron boron circle of pole magnetic.

Preferred scheme：The diameter of described through hole (21) is as cylinder (101) diameter, the width and list of flange one (22) Polarity neodymium iron boron circle (103) width is the same.

Preferred scheme：Described template (1) is provided with the die cavity (13) for being used for collecting power line, die cavity (13) close to edge It is provided with through hole (131), through hole (131) and is provided with for collecting power line in the wiring of one between the side wall of template (1) Terminal (132).

Preferred scheme：Described template (1), template lid (3) are neutral steel form and neutral steel form lid, both of which not with S poles, N poles magnetic it is attracting.

Preferred scheme：The side of described template (1) is provided with a shrinkage pool (4), and shrinkage pool (4) bottom is by setting through hole and its In a blind nib (11) communicate, be provided with described shrinkage pool (4) detection electric permanent-magnet suction disc whether with the presence of magnetic field magnetic force Identifying device (5), magnetic force identifying device (5) includes having emptied a cavity (511), cavity in the middle of sole piece (51), sole piece (51) (511) bottom is provided with an electric wire through-hole (512), and cavity (511) inner bottom part is provided with winding frame (513), winding frame (513) side Winding slot on be wound with copper coil (514), magnetic core mounting hole (515), magnetic core mounting hole (515) are provided with the middle of winding frame (513) On magnetic patch (516) is installed, the two ends of magnetic patch (516) are concordant with magnetic core mounting hole (515)；Described magnetic patch (516) top surface patch A magnetoelasticity compression set (6), the length and width of magnetoelasticity compression set (6) is consistent with the length and width of magnetic patch (516)；Magnetoelasticity Compression set (6) includes having emptied one in the middle of bottom iron block (61) and top iron block (62), described bottom iron block (61) front A spring (612) is installed with blind hole (611), blind hole (611), one end pin body of spring (612) is fixed on blind hole (611) Bottom；Emptied in the middle of the reverse side of described top iron block (62) and be fixedly connected with spring in a depression (621), depression (621) (612) other end pin body；After being upspring between described top iron block (62) and bottom iron block (61) by spring (612) reset It is formed with the spatial portion (666) of space type；Described magnetoelasticity compression set (6) is circumferentially provided with magnet (63), magnet (63) magnetoelasticity compression set (6) is surrounded, magnet (63) bottom surface contacts with winding frame (513) and is adjacent to.

The beneficial effects of the utility model are：

Set and lack at the top of being separated by die wall between several blind nibs, blind nib, die wall provided with lead in template Mouthful, the cylinder for the projection that is connected as a single entity with template is provided with the middle of each blind nib bottom, is formed between cylinder and blind nib die wall Around the circumferential groove of cylinder, blind nib is simple in construction, when installing magnetic strength element, and circumferential groove, circumferential groove energy are put into order Neat unipolarity neodymium iron boron circle is quickly proofreaded, the utility model is either used only only with the neodymium iron boron circle of only N poles magnetic There is the neodymium iron boron circle of S poles magnetic, it is impossible to there is bipolarity to exist simultaneously, it is necessary to exempting from when using the only neodymium iron boron circle of N poles magnetic Except S poles magnetic, the neodymium iron boron circle of N poles magnetic is bigger to the suction of iron, steel part, exempt S poles magnetic can prevent N poles magnetic with S poles magnetic is attracting and consumes part permanent magnet, and N poles magnetic neodymium iron boron circle can concentrate magnetic force and absorbate after exempting the interference of S poles It is attracting, inhale absorbate it is more steady, the unipolarity of equal volume, bipolarity neodymium iron boron are compared, and unipolar neodymium iron boron is than bipolar Property neodymium iron boron suction be more than more than 30%, that is to say, that can at least improve 30% magnetic attraction, circumferential groove can make magnetic force more Concentrate, prevent the interference and diffusion between magnetic, improve magnetic ability, single blind nib install magnetic strength element easily pinpoint the problems and Being capable of quick detection, reparation, saving die change and adjustment time, raising production efficiency, reduction production cost, if some is blind The quality such as burning out occurs in the magnetic strength element of nib, coil short, loss can not use the problem can to change the magnetic of the blind nib of correspondence Sensing unit.

Brief description of the drawings

Fig. 1 is utility model product axle housing stereogram；

Fig. 2 is utility model product axle housing lateral plan；

Fig. 3 is the side view that utility model product axle housing carries copper cash；

Fig. 4 is the stereogram after the tooth-like fin turnover of software of utility model product axle housing；

Fig. 5 is the sectional view of utility model product；

Fig. 6 is utility model product axle housing, unipolarity neodymium iron boron circle, the explosive view of Al-Ni-Co permanent magnet block three；

Fig. 7 is the explosive view of utility model product；

Fig. 8 is the stereogram of utility model product unipolarity neodymium iron boron circle；

Fig. 9 is the explosive view of utility model product；

Figure 10 is the explosive view of utility model product magnetic force identifying device；

Figure 11 is the sectional view of utility model product magnetic force identifying device；

Figure 12 is the explosive view of utility model product magnetoelasticity compression set；

Figure 13 is that utility model product magnetoelasticity compression set resets the sectional view after upspringing；

Figure 14 is the sectional view after utility model product magnetoelasticity compression set magnetic compresses.

Embodiment

As shown in Fig. 1-Fig. 9：The electric permanent-magnet suction disc device of Based Intelligent Control mold changing, electric permanent-magnet suction disc device includes template 1, The top that the reverse side of template 1 is provided between several blind nibs 11, blind nib 11 is provided with lead breach 12, each blind bottom of nib 11 Portion's intermediate projections have the cylinder 101 being connected as a single entity with template 1, are formed between cylinder 110 and the die wall of blind nib 11 around cylinder The unipolarity neodymium iron boron circle 103 consistent with the pillar height of cylinder 101, unipolarity neodymium are set with 101 circumferential groove 102, circumferential groove 102 It has been adjacent on iron boron circle 103 in the middle of axle housing 2, axle housing 2 and has been provided with through hole 21, outer upper end is outward extended with flange 1, outer lower end Portion is extended with flange 2 23, and flange 2 23 is extended with the tooth-like fin 231 of software；Shape between described flange 1 and flange 2 23 Copper cash 25 is wound with winding slot 24, winding slot 24 into having, axle housing 2 toward blind nib 11 fill in when the tooth-like fin 231 of software by blind The limitation of the diameter of nib 11 flips up the tooth-like fin 231 of software, and axle housing 2 is fully inserted into after blind nib 11, the tooth-like wing of software Copper cash 25 is wrapped to form the magnetic induction loop of electric permanent-magnet suction disc by piece 231, and the magnetic induction loop copper cash 25 in each blind nib 11 passes through Conductor is connected in parallel through lead breach 12, forms the magnetic induction loop parallel-connection network being made up of some monomer magnetic induction loops, magnetic induction line Circle and the perpendicular corresponding states of unipolarity neodymium iron boron circle 103；It is set with described through hole 21 and the diameter of through hole 21 and Kong Gaoyi The Al-Ni-Co permanent magnet block 26 of cause；The described rear of template 1 is provided with template lid 3, and template lid 3 tightens up the reverse side of template 1 by screw Fixed mode is connected all comprehensive coverings including the blind aperture of nib 11.

Preferred scheme：The described top of cylinder 101 is provided with blind screw hole 201；Set in the middle of described Al-Ni-Co permanent magnet block 26 There is screw through-hole 261；Described template lid 3 passes through the reverse side of template 1 by screw on the spiral shell of template lid 3, Al-Ni-Co permanent magnet block 26 Silk through hole 261, which is tightened in, to be tightened up fixed mode on the blind screw hole 201 at the top of cylinder 101 and connects the hole of all blind nibs 11 Mouth covering comprehensively.

Preferred scheme：Described template 1, template lid 3 be rectangle, and corner is equipped with for installing guide pillar positioning and sliding Arc angle position 31.

Preferred scheme：The vertical corresponding appearance of template 1 of described circumferential groove 102 is provided with concave type annular groove 104, its cylinder The 101 vertical corresponding appearances of template 1 are raised protrusion 105.

Preferred scheme：Described unipolarity neodymium iron boron circle 103 is by some pieces of arc unipolarity neodymium iron boron collar member 1031 and connects Formed.

Preferred scheme：Described unipolarity neodymium iron boron circle 103 is only the neodymium iron boron circle of N poles magnetic or only S poles magnetic The neodymium iron boron circle of property.

Preferred scheme：The diameter of described through hole 21 is as the diameter of cylinder 101, width and the unipolarity neodymium of flange 1 Iron boron 103 width of circle are the same.

Preferred scheme：Described template 1 is provided with the die cavity 13 for being used for collecting power line, die cavity 13 and template close to edge It is provided with through hole 131, through hole 131 and is provided with for collecting power line in the binding post 132 of one between 1 side wall.

Preferred scheme：Described template 1, template lid 3 are neutral steel form and neutral steel form lid, both of which not with S poles, The magnetic of N poles is attracting.

Preferred scheme：As shown in Figure 10-Figure 14：The side of described template 1 is provided with a shrinkage pool 4, and the bottom of shrinkage pool 4 passes through Set through hole to be communicated with one of them blind nib 11, be provided with whether detection electric permanent-magnet suction disc has magnetic field to deposit in described shrinkage pool 4 Magnetic force identifying device 5, magnetic force identifying device 5 includes sole piece 51, emptied a cavity 511, the bottom of cavity 511 in the middle of sole piece 51 Portion is provided with an electric wire through-hole 512, and the inner bottom part of cavity 511 is provided with winding frame 513, the winding slot of the side of winding frame 513 and is wound with Copper coil 514, the circumscripted power line of copper coil 514 sets through hole (not shown) to enter through electric wire through-hole 512, the bottom of shrinkage pool 4 In blind nib 11, then it is connected by blind nib 11 with controller, magnetic core mounting hole 515 is provided with the middle of described winding frame 513, Magnetic patch 516 is installed, the two ends of magnetic patch 516 are concordant with magnetic core mounting hole 515 on magnetic core mounting hole 515；Described magnetic patch 516 is pushed up Face is close to there is a magnetoelasticity compression set 6, and the length and width of magnetoelasticity compression set 6 is consistent with the length and width of magnetic patch 516；Magnetoelasticity pressure Compression apparatus 6 includes bottom iron block 61 and top iron block 62, and the described reverse side of bottom iron block 61 is adjacent on magnetic patch 516, bottom iron Emptied in the middle of the front of block 61 and a spring 612 is installed with a blind hole 611, blind hole 611, one end pin body of spring 612 is consolidated It is scheduled on the bottom of blind hole 611；Empty and be fixedly connected with a depression 621, depression 621 in the middle of the reverse side of described top iron block 62 The other end pin body of spring 612；Formed after being upspring between described top iron block 62 and bottom iron block 61 by the reset of spring 612 There is the spatial portion 666 of space type；Described magnetoelasticity compression set 6 is circumferentially provided with magnet 63, and magnet 63 is by magnetoelasticity pressure Compression apparatus 6 is surrounded, and the bottom surface of magnet 63 contacts with winding frame 513 and is adjacent to, when producing magnetic field reaction when being powered in electric permanent-magnet suction disc, magnetic Power identifying device 5 produces magnetic field effect by the way that copper coil 514, magnetic patch 516, magnet 63 are also synchronous, and the top iron block 62 upspring leads to Cross magnetic attraction to compress spring 612, i.e. the top retraction of iron block 62, spatial portion 666 is not present after the retraction of top iron block 62, the bottom of with Portion's iron block 61 is fitted, and is watched from the outside, because top iron block 62 is sucked by magnetic force, magnetic is there is inside electric permanent-magnet suction disc , point out to operate this mechanical staff to notice that this machinery is in running order, take care or arrange further work；When After magnetic force demagnetization completely inside electric permanent-magnet suction disc, top iron block 62 resets jack-up by spring 612, recovers depositing for spatial portion 666 After protrusion of the staff by viewing top iron block 62, illustrating that electric permanent-magnet suction disc does not have magnetic, under template can be opened or arranged One step works；It is also still to be inhaled into judge electricity by the protrusion of this top iron block 62 when the machinery operated power-off suddenly Whether permanent magnetic chuck deposits magnetic；The depth being inhaled into by top iron block 62 may determine that the magnetic force of electric permanent-magnet suction disc is strong/weak, point out Staff arranges further work.

Described magnet 63 is constituted by four pieces surrounds magnetoelasticity compression set 6.

Claims

1. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing, it is characterised in that：Electric permanent-magnet suction disc device includes template (1), template (1) top that reverse side is provided between several blind nibs (11), blind nib (11) is provided with lead breach (12), each blind nib (11) bottom intermediate projections have the cylinder (101) being connected as a single entity with template (1), between cylinder (110) and blind nib (11) die wall It is formed with the circumferential groove (102) around cylinder (101), circumferential groove (102) and is set with the monopole consistent with cylinder (101) pillar height Property neodymium iron boron circle (103), be adjacent on unipolarity neodymium iron boron circle (103) in the middle of axle housing (2), axle housing (2) and be provided with through hole (21), outside Upper end is outward extended with flange one (22), and outer lower end portion is extended with flange two (23), and it is tooth-like that flange two (23) is extended with software Fin (231)；Winding slot (24) is formed between described flange one (22) and flange two (23), winding slot is wound with copper on (24) Line (25), the tooth-like fin of software (231) will be soft by the limitation of blind nib (11) diameter when the past blind nib (11) of axle housing (2) is filled in The tooth-like fin of body (231) is flipped up, and axle housing (2) is fully inserted into after blind nib (11), and the tooth-like fin of software (231) is by copper cash (25) magnetic induction loop of electric permanent-magnet suction disc is wrapped to form, the magnetic induction loop copper cash (25) in each blind nib (11) is worn by conductor Cross lead breach (12) to be connected in parallel, form the magnetic induction loop parallel-connection network that is made up of some monomer magnetic induction loops, magnetic induction loop with Unipolarity neodymium iron boron circle (103) perpendicular corresponding states；It is set with described through hole (21) high with through hole (21) diameter and hole Consistent Al-Ni-Co permanent magnet block (26)；Described template (1) rear is provided with template lid (3), and template lid (3) is by template (1) reverse side Fixed mode is tightened up by screw to connect all comprehensive coverings including blind nib (11) aperture.

2. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described cylinder (101) top is provided with blind screw hole (201)；Screw through-hole (261) is provided with the middle of described Al-Ni-Co permanent magnet block (26)；Described Template lid (3) twists template (1) reverse side by the screw through-hole (261) of screw through template lid (3), Al-Ni-Co permanent magnet block (26) Tightly fixed mode is tightened up on the blind screw hole (201) at the top of cylinder (101) connect that the aperture of all blind nibs (11) is complete Face is covered.

3. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described template (1), template lid (3) is rectangle, and corner is equipped with the arc angle position (31) for installing guide pillar positioning and sliding.

4. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described circumferential groove (102) vertical corresponding template (1) appearance is provided with concave type annular groove (104), the vertical corresponding template (1) of its cylinder (101) Appearance is raised protrusion (105).

5. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described unipolarity Neodymium iron boron circle (103) is formed by some pieces of arc unipolarity neodymium iron boron collar member (1031) and connecing.

6. the electric permanent-magnet suction disc device that Based Intelligent Control is changed the mold according to claim 1 or 5, it is characterised in that：Described list Polarity neodymium iron boron circle (103) is only the neodymium iron boron circle of N poles magnetic or only the neodymium iron boron circle of S poles magnetic.

7. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described through hole (21) diameter is as cylinder (101) diameter, and the width of flange one (22) is as unipolarity neodymium iron boron circle (103) width.

8. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described template (1) die cavity (13) for being used for collecting power line is provided with close to edge, through hole is provided between die cavity (13) and the side wall of template (1) (131), it is provided with through hole (131) for collecting power line in the binding post (132) of one.

9. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described template (1), template lid (3) is neutral steel form and neutral steel form lid, and magnetic of the both of which not with S poles, N poles is attracting.

10. the electric permanent-magnet suction disc device of Based Intelligent Control mold changing according to claim 1, it is characterised in that：Described template (1) side is provided with a shrinkage pool (4), and shrinkage pool (4) bottom is communicated by setting the blind nib of through hole and one of them (11), described Be provided with shrinkage pool (4) detection electric permanent-magnet suction disc whether with the presence of magnetic field magnetic force identifying device (5), magnetic force identifying device (5) Including sole piece (51), a cavity (511) is emptied in the middle of sole piece (51), cavity (511) bottom is provided with an electric wire through-hole (512), Cavity (511) inner bottom part is provided with winding frame (513), the winding slot of winding frame (513) side and is wound with copper coil (514), around It is provided with the middle of wire frame (513) on magnetic core mounting hole (515), magnetic core mounting hole (515) and magnetic patch (516) is installed, magnetic patch (516) Two ends are concordant with magnetic core mounting hole (515)；Described magnetic patch (516) top surface is close to having a magnetoelasticity compression set (6), magnetoelasticity The length and width of compression set (6) is consistent with the length and width of magnetic patch (516)；Magnetoelasticity compression set (6) include bottom iron block (61) and Top iron block (62), described bottom iron block (61) reverse side is adjacent on magnetic patch (516), and bottom iron block (61) is emptied in the middle of front Have and a spring (612) is installed with a blind hole (611), blind hole (611), one end pin body of spring (612) is fixed on blind hole (611) bottom；Empty and be fixedly connected with a depression (621), depression (621) in the middle of the reverse side of described top iron block (62) The other end pin body of spring (612)；Bullet is resetted by spring (612) between described top iron block (62) and bottom iron block (61) The spatial portion (666) of space type is formed with after rising；Described magnetoelasticity compression set (6) is circumferentially provided with magnet (63), magnetic Iron (63) surrounds magnetoelasticity compression set (6), and magnet (63) bottom surface contacts with winding frame (513) and is adjacent to.