CN201194190Y - Magnetic eraser - Google Patents
Magnetic eraser Download PDFInfo
- Publication number
- CN201194190Y CN201194190Y CNU2008200570715U CN200820057071U CN201194190Y CN 201194190 Y CN201194190 Y CN 201194190Y CN U2008200570715 U CNU2008200570715 U CN U2008200570715U CN 200820057071 U CN200820057071 U CN 200820057071U CN 201194190 Y CN201194190 Y CN 201194190Y
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- Prior art keywords
- time relay
- relay
- demagnetization
- demagnetizer
- base
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Abstract
A magnetic eraser comprises a cabinet composed of a left chamber and a right chamber, a portable handle, a panel, a control circuit, a demagnetization line packet and a time relay; the left chamber is a control circuit mounting chamber, provided with an iron core coil and an iron core coil base inwards; the right chamber is a demagnetization coil mounting chamber, provided with the time relay, a relay, a relay base, a time relay base; the demagnetization line packet includes a first steel plate, a second steel plate, an iron core coil and a iron core coil base; the control circuit includes a starting button, a circuit working indication light, a time relay, a relay and a PTC thermistor, wherein operating time of the magnetic eraser is controlled by the time relay. The utility model has the advantages of demagnetizing different ferromagnetic materials; being acceptable for demagnetization of minitype metal parts, fixtures, small dies, workpieces and devices; demagnetizing a plurality of workpieces simultaneously; detecting the demagnetized workpieces instantly, low cost and convenient carrying and use.
Description
[technical field]
The utility model relates to machining manufacturing technology field, is a kind of demagnetizer, is applicable to eliminate the magnetic field that metal parts produces in the course of processing, is suitable for the demagnetization of micro metal part, anchor clamps, little mould, workpiece, device.
[background technology]
Present existing worker can be divided into two kinds with demagnetizer, and a kind of is after adding AC power by demagnetization line bag, to produce alternating magnetic field in demagnetization line bag, at the uniform velocity walks out-of-dately from alternating magnetic field when workpiece, and magnetic field intensity is demagnetized because of linear attenuation.Another kind is the magnetic field that produces a concussion decay by discharging and recharging between the inductance capacitance, makes to act on to be changed by the magnetic direction of demagnetization workpiece and strength decrease reaches the purpose of demagnetization.
First kind of demagnetizer is because workpiece must at the uniform velocity be passed by from alternating magnetic field and just can be played the effect of demagnetization, and therefore, workpiece can only carry out on workpiece ground of a workpiece when carrying out the demagnetization processing, and its operating efficiency is lower, and energy consumption is also bigger.Although there is the people in demagnetizer, to add transport tape now for addressing this problem, thus one, it is big that demagnetizer itself becomes.
Handle though the twoth kind of demagnetizer can carry out the demagnetization of a plurality of workpiece simultaneously, because it need use the pulse phase shift technology, and adopts the nonpolarity big electric capacity of oil-immersed and high-voltage, thereby the cost that causes this type of demagnetizer is than higher.
[utility model content]
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of demagnetization that can not only carry out a plurality of workpiece simultaneously to handle, and the demagnetizer cost is also far below existing demagnetizer, and magnetic detection device is housed on demagnetizer, can detect the workpiece after the demagnetization immediately; In addition, can solve different ferromagnetic materials magnetic permeability, rectify stupid in, the discrepant problem of magnetic hysteresis loop, can carry out demagnetization to different ferromagnetic materials.
For achieving the above object, the technical scheme taked of the utility model is:
A kind of demagnetizer, contain casing, portable handle, panel, control circuit, run indicator, demagnetization line bag is characterized in that, is provided with the time relay, described casing is made of left case chamber and right case chamber, wherein, left case chamber is the control circuit installation room, is provided with ironcore choke, ironcore choke base in it at least; Right case chamber is the degaussion coil installation room, is provided with the time relay, relay, relay base, time relay base in it at least; Described demagnetization line bag comprises first steel plate, second steel plate, ironcore choke, ironcore choke base at least; Described control circuit comprises start button, circuit working indicator light, the time relay, relay, PTC posistor, by the running time of time relay control demagnetizer circuit, adopts the public voltage frequently of 220V.
The described time relay is the air damping type time relay.
The control time of the described time relay is 1～30 second.
Described ironcore choke base is made of bracing frame and spring.
Described casing is the casing of making of engineering plastics; The casing that also can adopt polymethyl methacrylate or transparent organic glass to make.
The utility model is externally connected with gaussmeter, and described Gauss counts portable gaussmeter, and is battery-powered, and its effect is to carry out magnetic detection for processed workpiece.
Demagnetization principle of the present utility model is: the characteristic of utilizing semistor (PTC) when demagnetizer feeds the public frequency of 220V voltage, in circuit, produce the alternating current of a concussion decay, thereby produce the magnetic field of a concussion decay, make by the magnetic direction of demagnetization workpiece to change, magnetic field intensity is successively decreased and is reached the purpose of demagnetization.
The course of work of a kind of demagnetizer of the utility model is: insert the public voltage frequently of 220V earlier, the device that needs demagnetization is placed on the steel plate of left case chamber, set the operating time according to different ferromagnetic materials by the time relay: if the demagnetization object is a hard magnetic material, the time of demagnetization is longer; If the demagnetization object is a soft magnetic material, the time of demagnetization can lack; Press starting switch at last, can observe demagnetization work by the circuit working indicator light and whether finish; After the demagnetization, can carry out magnetic detection, confirm whether to finish demagnetization by the gaussmeter of outer connection.
The good effect of a kind of demagnetizer of the utility model is:
(1) owing to adopted the art designs of the time relay, solved different ferromagnetic materials magnetic permeability, rectify stupid in, the discrepant problem of magnetic hysteresis loop, can carry out demagnetization to different ferromagnetic materials.
(2) be applicable to the magnetic field that the elimination metal parts produces in the course of processing, be applicable to micro metal part, anchor clamps, little mould, workpiece, device---as the demagnetization of slide calliper rule, screw, nut, screwdriver, cutter, blade.
(3) improved demagnetization efficiency greatly by the special demagnetization line bag of structure, and can carry out demagnetization to a plurality of workpiece simultaneously and handle, the demagnetization cost is lower;
(4) magnetic detection device is housed on demagnetizer, can detects the workpiece after the demagnetization immediately;
(5) be portable demagnetizer, carry with very easy to use.
[description of drawings]
Accompanying drawing 2 is internal structure exploded views of a kind of demagnetizer of the utility model;
Accompanying drawing 3 is control circuit figure of a kind of demagnetizer of the utility model.
Label shown in the figure is respectively: 1, casing, 2, left case chamber, 3, right case chamber, 4, portable handle, 5, panel, 6, first steel plate, 7, second steel plate, 8, the time relay, 9, start button, 10, circuit working indicator light, 11, ironcore choke, 12, the ironcore choke base, 13, relay, 14, relay base, 15, time relay base.
[embodiment]
Provide embodiment of the present utility model below in conjunction with accompanying drawing.
Referring to accompanying drawing 1,2.A kind of demagnetizer contains casing 1, portable handle 3, panel 5, control circuit, run indicator, and demagnetization line bag is characterized in that, is provided with the time relay 8; Can see that by accompanying drawing casing of the present utility model was separated with left case chamber 2 and right case chamber 3 in 1 minute, two ends are provided with portable handle 4, and the bottom is provided with feet for four jiaos, and casing 1 usefulness engineering plastics are made, and also can make of polymethyl methacrylate or transparent organic glass; First steel plate 6 and second steel plate 7, the time relay 8, start button 9, circuit working indicator light 10 are set on the panel 5 of casing 1; First steel plate 6 and second steel plate 7 are two block plates that fit tightly with ironcore choke 11 end faces, are the workbenches of demagnetization; The time relay 8 is used to control the operating time of demagnetization, and start button 9 is the press type button, is the switch of control circuit, can make demagnetizer enter operating state; Circuit working indicator light 10 is a light-emitting diode, is used to observe circuit operation.
Referring to accompanying drawing 2.Case chamber, a left side 2 is the control circuit installation room, is provided with ironcore choke 11, ironcore choke base 12 in it at least; Right case chamber 3 is the degaussion coil installation room, at least be provided with the time relay 8, relay 13, relay base 14, time relay base 15 in it, the time relay 8 adopts the air damping type time relay, and its reference time delay is big, and two kinds of 0.4～60s and 0.4～180s are arranged; Described demagnetization line bag comprises first steel plate 6, second steel plate 7, ironcore choke 11, ironcore choke base 12 at least, ironcore choke base 12 is made up of bracing frame and spring, the ironcore choke 11 and first steel plate 6 and second steel plate 7 are fitted tightly, thereby improve demagnetization efficient.
Described control circuit comprises start button 9, circuit working indicator light 10, the time relay 8, relay 13, PTC posistor, by the running time of the time relay 8 control demagnetizer circuit, control time is 1～30 second, adopts the public voltage frequently of 220V.
A kind of demagnetizer of the utility model can connect gaussmeter outward, and described Gauss counts the portable gaussmeter of LZ-640 type, and is battery-powered, and its effect is to carry out magnetic detection for processed workpiece.
Referring to accompanying drawing 3.SB1 start button in the utility model control circuit, KM coil, KM normally open contact, KT coil, KT normally open contact, two thermistors, change over switch, ironcore choke, Light-Emitting Diode as seen from Figure 3, its course of work is: KM coil electricity when pressing the SB1 start button, KM normally open contact closure makes the KT energising, thermistor, ironcore choke, Light-Emitting Diode be energising simultaneously all, and circuit begins to carry out demagnetization work.Through in advance after a period of time of setting on the time relay, the KT normally closed interlock disconnects, and circuit working finishes.Because a period of time internal cause temperature too high can not work of thermistor after work, therefore, the utility model utilizes a change over switch and two thermistors to solve this problem at this: proceed demagnetization work on another thermistor when being transformed into by change over switch after the thermistor work, thereby solved the problem that thermistor can not continuous operation.
Claims (8)
1. demagnetizer, contain casing, portable handle, panel, control circuit, run indicator, demagnetization line bag is characterized in that, is provided with the time relay, described casing is made of left case chamber and right case chamber, wherein, left case chamber is the control circuit installation room, is provided with ironcore choke, ironcore choke base in it at least; Right case chamber is the degaussion coil installation room, is provided with the time relay, relay, relay base, time relay base in it at least; Described demagnetization line bag comprises first steel plate, second steel plate, ironcore choke, ironcore choke base at least; Described control circuit comprises start button, circuit working indicator light, the time relay, relay, PTC posistor, by the running time of time relay control demagnetizer circuit, adopts the public voltage frequently of 220V.
2. a kind of demagnetizer according to claim 1 is characterized in that, the described time relay is the air damping type time relay.
3. according to claim 1 or 2 described a kind of demagnetizers, it is characterized in that the control time of the described time relay is 1～30 second.
4. a kind of demagnetizer according to claim 1 is characterized in that, described ironcore choke base is made of bracing frame and spring.
5. a kind of demagnetizer according to claim 1 is characterized in that, described casing is the casing of making of engineering plastics.
6. a kind of demagnetizer according to claim 1 is characterized in that, described casing is the casing of making of polymethyl methacrylate or transparent organic glass.
7. a kind of demagnetizer according to claim 1 is characterized in that, is externally connected with gaussmeter.
8. a kind of demagnetizer according to claim 7 is characterized in that described Gauss counts portable gaussmeter, and is battery-powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200570715U CN201194190Y (en) | 2008-04-09 | 2008-04-09 | Magnetic eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200570715U CN201194190Y (en) | 2008-04-09 | 2008-04-09 | Magnetic eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201194190Y true CN201194190Y (en) | 2009-02-11 |
Family
ID=40393722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200570715U Expired - Fee Related CN201194190Y (en) | 2008-04-09 | 2008-04-09 | Magnetic eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201194190Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469931A (en) * | 2015-12-28 | 2016-04-06 | 西南交通大学 | Demagnetization processing method for cobalt-containing hard alloy milling cutter |
| CN107657442A (en) * | 2016-07-26 | 2018-02-02 | 阿里巴巴集团控股有限公司 | To the control process method and device of the magnetic annex on article |
| CN109036766A (en) * | 2018-06-06 | 2018-12-18 | 合肥数理电子信息科技有限公司 | A kind of electronic information store destruction equipment |
-
2008
- 2008-04-09 CN CNU2008200570715U patent/CN201194190Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469931A (en) * | 2015-12-28 | 2016-04-06 | 西南交通大学 | Demagnetization processing method for cobalt-containing hard alloy milling cutter |
| CN107657442A (en) * | 2016-07-26 | 2018-02-02 | 阿里巴巴集团控股有限公司 | To the control process method and device of the magnetic annex on article |
| CN107657442B (en) * | 2016-07-26 | 2021-10-29 | 阿里巴巴集团控股有限公司 | Method and device for controlling and processing magnetic accessories on article |
| CN109036766A (en) * | 2018-06-06 | 2018-12-18 | 合肥数理电子信息科技有限公司 | A kind of electronic information store destruction equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20110409 |