CN107134362B - A kind of ndfeb magnet clad structure and method - Google Patents
A kind of ndfeb magnet clad structure and method Download PDFInfo
- Publication number
- CN107134362B CN107134362B CN201710439289.0A CN201710439289A CN107134362B CN 107134362 B CN107134362 B CN 107134362B CN 201710439289 A CN201710439289 A CN 201710439289A CN 107134362 B CN107134362 B CN 107134362B
- Authority
- CN
- China
- Prior art keywords
- ontology
- cap
- ndfeb magnet
- coating member
- caulking groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 238000005187 foaming Methods 0.000 claims abstract description 7
- 239000004088 foaming agent Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 6
- 238000005253 cladding Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Treatment Devices (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The present invention relates to magnet processing technique fields, refer specifically to a kind of ndfeb magnet clad structure, also disclose a kind of ndfeb magnet method for coating；Ontology including magnet, the both ends of the ontology are symmetrically arranged with cap, caulking groove are symmetrically arranged in the both ends of the surface of cap, the end of ontology is arranged in caulking groove and ontology and the cap at both ends are in integrally connected；The surrounding of the ontology and cap is coated with the coating member of foaming；Structure of the invention is reasonable, and coating member wraps up the cap at ontology and its both ends, and to ontology composition waterproof sealing structure, PP foaming makes coating member realize automatic control with water level upgrading band moving magnet ontology；Stroke slot top pillar with cap is integrally formed, and is used convenient for cooperating the stroke column of complete machine to assemble, and ndfeb magnet of the invention can meet the mandatory standard of strong magnetic the triggering demand and food contact material safety of food apparatus.
Description
Technical field
The present invention relates to magnet processing technique fields, refer specifically to a kind of ndfeb magnet clad structure, also disclose one
Kind ndfeb magnet method for coating.
Background technique
Magnet can be divided into permanent magnet and impermanent magnet, and permanent magnet can be natural products (also known as loadstone),
It can also be by manually manufacturing.Rather than alnico magnets, it can only be magnetic under certain conditions, usually in the form of electromagnet
It generates, that is, strengthens its magnetic field using electric current.Artificial magnet is broadly divided into metal alloy magnet and ferrite permanent-magnet materials,
Ndfeb magnet therein has very high performance as third generation rare earth permanent-magnetic material, be widely used in the energy, traffic,
The industries such as machinery, medical treatment, IT, household electrical appliances.
The manufacture of existing magnet generally uses magnetic powder sizing sintering, then carries out the processing of plastic cement cladding to magnet, then magnetize and obtain
Unipolarity or multipolarity magnet, as Chinese patent 201310142096.0 discloses a kind of injection molding magnet and its production side
Method, 201620690600.X disclose a kind of buckle magnet steel cladding component.The production method pair to magnetize after this first injection molding cladding
Magnet performance is affected, and 1/5th of magnetic intensity deficiency ndfeb magnet.Magnetoelectricity controls in household appliance technical field
Need strong magnet assembly to trigger, to realize relatively large distance or drive control, and the processing of the cladding of food processing electrical appliance needs to meet more
GB4806 series forces standard.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide it is a kind of it is structurally reasonable, in SEA LEVEL VARIATION
When the triggering of strong magnetic is provided, food contact standard can be met ndfeb magnet clad structure and method.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of ndfeb magnet clad structure of the present invention, the both ends of the ontology including magnet, the ontology are symmetrical
Equipped with cap, caulking groove is symmetrically arranged in the both ends of the surface of cap, the end of ontology is arranged in caulking groove and the cap of ontology and both ends
In integrally connected；The surrounding of the ontology and cap is coated with the coating member of foaming.
According to above scheme, the cross section of the cap is matched with the cross section of ontology, and the end of ontology is adapted to caulking groove
And in interference fit, ontology can be cross section be circle, regular polygon, abnormity column structure.
According to above scheme, the depth of the caulking groove is H, and the length of ontology is L, then H≤L/2.
According to above scheme, the upper surface of the coating member and the cap upper surface of ontology upper end are concordant, coating member it is upper
End face is equipped with limit for height step.
According to above scheme, the lower end surface of the coating member is equipped with stroke slot, and the cap of ontology lower end corresponds to buried
In stroke slot.
A kind of ndfeb magnet method for coating, its step are as follows:
A, neodymium-iron-boron powder is sintered according to the ratio and constitutes ontology, preservative treatment is carried out to body surface；
B, ontology both ends are inserted into the corresponding caulking groove of two caps and are integrally formed structure, and cap is made completely or partially to cover this
Body surrounded surface；
C, the ontology cap integral structure of previous step is packed into mold, injection PP foaming agent constitutes coating member in mold.
According to above scheme, the mold is equipped with no less than four die cavitys, and the bottom surface of die cavity is equipped with top pillar.
The invention has the following beneficial effects: structure of the invention is reasonable, coating member wraps up the cap at ontology and its both ends, to ontology structure
At waterproof sealing structure, PP foaming makes coating member upgrade band moving magnet ontology realization automatic control with water level；Stroke slot is by cap
Lid cooperation top pillar is integrally formed, and is used convenient for cooperating the stroke column of complete machine to assemble, ndfeb magnet of the invention can meet food
The mandatory standard of strong magnetic the triggering demand and food contact material safety of equipment.
Detailed description of the invention
Fig. 1 is whole configuration schematic diagram of the invention；
Fig. 2 is coating member partial structure diagram of the invention.
In figure:
1, ontology；2, cap；3, coating member；4, mold；21, caulking groove；31, limit for height step；32, stroke slot；41, mould
Chamber；42, top pillar.
Specific embodiment
Technical solution of the present invention is illustrated with embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of ndfeb magnet clad structure of the present invention, the ontology 1 including magnet, the ontology
1 both ends are symmetrically arranged with cap 2, and caulking groove 21 is symmetrically arranged in the both ends of the surface of cap 2, and the end of ontology 1 is arranged in caulking groove 21
And ontology 1 and the cap 2 at both ends are in integrally connected；The surrounding of the ontology 1 and cap 2 is coated with the coating member 3 of foaming；
The cap 2 at 1 both ends of ontology is symmetrical arranged and 2 both ends of cap are equipped with caulking groove 21, the caulking groove 21 of 2 arbitrary end of cap when assembly
It is opposite to may make up installation cavity body, it is assembled without point direction；Coating member 3 surrounds 2 surrounding of ontology 1 and cap, and then wraps
It covers part 3 and two caps 2 constitutes enclosed construction, ontology 1 is sealed in the cavity between two caps 2, and coating member 3 preferably uses
The molding of polypropylene PP foam process can meet food contact material and force standard, make the floating of magnet ontology 1 in water with water level
Lifting realize that the triggering of strong magnetic automatically controls.
The cross section of the cap 2 is matched with the cross section of ontology 1, and the end of ontology 1 is adapted to caulking groove 21 and in interference
Cooperation, ontology 1 can be cross section be circle, regular polygon, abnormity column structure；The cap 2 can be expired by caulking groove 21
The assembly demand of the ontology 1 of sufficient arbitrary shape, consequently facilitating the foaming of coating member 3 encapsulates.
The depth of the caulking groove 21 is H, and the length of ontology 1 is L, then H≤L/2, two caps 2 of depth relationship of caulking groove 21
After being assembled with ontology 1 whether fully wrapped around ontology 1, coating member 3 can directly constitute enclosed construction around two 2 surroundings of cap, from
And the versatility for improving cap 2 makes it that can be adapted to the ontology of random length 1.
The upper surface of the coating member 3 is concordant with 2 upper surface of cap of 1 upper end of ontology, and the upper surface of coating member 3 is equipped with
Limit for height step 31, limit for height step 31 are formed by mold 4, cooperate the stroke limit of complete machine to be arranged and magnet is avoided to be detached from stroke column.
The lower end surface of the coating member 3 is equipped with stroke slot 32, and the cap 2 of 1 lower end of ontology is accordingly embedded in stroke
In slot 32, the stroke slot 32 is used to assemble the stroke column in complete machine, to make magnet float in water body, and with dampening
Magneto sensor of the lifting of position along stroke column driving different location.
A kind of ndfeb magnet method for coating, its step are as follows:
A, neodymium-iron-boron powder is sintered according to the ratio and constitutes ontology 1, preservative treatment is carried out to 1 surface of ontology；
B, 1 both ends of ontology are inserted into two corresponding caulking grooves 21 of cap 2 and are integrally formed structure, make cap 2 completely or partially
Cover 1 surrounded surface of ontology；
C, 1 cap of the ontology of previous step, 2 integral structure is packed into mold 4, injection PP foaming agent constitutes cladding in mold 4
Part 3.
Currently preferred magnet ontology 1 is NbFeB sintered molding, so as to meet the design requirement of strong magnetic triggering, phase
For the technique to magnetize after the molding of existing magnetic powder, magnet triggering performance can be effectively improved.
The mold 4 is equipped with no less than four die cavitys 41, and the bottom surface of die cavity 41 is equipped with top pillar 42, sheet in step c
Body 1, which is packed into die cavity 41, docks the caulking groove 21 of its lower end cap 2 with top pillar 42, and then so that ontology 1 is in 41 center of die cavity and consolidate
Fixed, coating member 3 wraps up ontology 1 and two end cap covers 2 after the injection of PP foaming agent, and the demoulding of top pillar 42 constitutes stroke slot 32.
The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention,
The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (7)
1. a kind of ndfeb magnet clad structure, the ontology (1) including magnet, it is characterised in that: the both ends pair of the ontology (1)
Claim to be equipped with cap (2), be symmetrically arranged with caulking groove (21) in the both ends of the surface of cap (2), the end of ontology (1) is arranged in caulking groove (21)
And ontology (1) and the cap (2) at both ends are in integrally connected；The surrounding of the ontology (1) and cap (2) is coated with foaming
Coating member (3).
2. ndfeb magnet clad structure according to claim 1, it is characterised in that: the cross section of the cap (2) with
The cross section of ontology (1) matches, and the end of ontology (1) is adapted to caulking groove (21) and in interference fit, and ontology (1) can be transversal
Face be circle, regular polygon, abnormity column structure.
3. ndfeb magnet clad structure according to claim 1, it is characterised in that: the depth of the caulking groove (21) is H,
The length of ontology (1) is L, then H≤L/2.
4. ndfeb magnet clad structure according to claim 1, it is characterised in that: the upper surface of the coating member (3)
Concordant with cap (2) upper surface of ontology (1) upper end, the upper surface of coating member (3) is equipped with limit for height step (31).
5. ndfeb magnet clad structure according to claim 1, it is characterised in that: the lower end surface of the coating member (3)
It is equipped with stroke slot (32), the cap (2) of ontology (1) lower end is accordingly embedded in stroke slot (32).
6. a kind of preparation method of ndfeb magnet clad structure as described in claim 1, which is characterized in that including walking as follows
It is rapid:
A, neodymium-iron-boron powder is sintered according to the ratio and constitutes ontology (1), preservative treatment is carried out to ontology (1) surface；
B, ontology (1) both ends are inserted into the corresponding caulking groove (21) of two caps (2) and are integrally formed structure, make cap (2) completely or portion
Divide ground covering ontology (1) surrounded surface；
C, the ontology of previous step (1) cap (2) integral structure is packed into mold (4), injection PP foaming agent is constituted in mold (4)
Coating member (3).
7. the preparation method of ndfeb magnet clad structure according to claim 6, it is characterised in that: the mold (4)
No less than four die cavitys (41) are equipped with, the bottom surface of die cavity (41) is equipped with top pillar (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710439289.0A CN107134362B (en) | 2017-06-12 | 2017-06-12 | A kind of ndfeb magnet clad structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710439289.0A CN107134362B (en) | 2017-06-12 | 2017-06-12 | A kind of ndfeb magnet clad structure and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107134362A CN107134362A (en) | 2017-09-05 |
| CN107134362B true CN107134362B (en) | 2019-04-16 |
Family
ID=59735279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710439289.0A Expired - Fee Related CN107134362B (en) | 2017-06-12 | 2017-06-12 | A kind of ndfeb magnet clad structure and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107134362B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102976A (en) * | 2021-11-25 | 2022-03-01 | 无锡韵茨泵业有限公司 | Integrated rubber coating method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5718146A (en) * | 1995-07-05 | 1998-02-17 | Liang; Chung-Ho | Waste level detector for vehicle cesspools |
| JP2004343274A (en) * | 2003-05-14 | 2004-12-02 | Alps Electric Co Ltd | Nonreciprocal circuit element and its manufacturing method |
| JP2007239032A (en) * | 2006-03-09 | 2007-09-20 | Tdk Corp | Sintering vessel and method for producing rare earth magnet |
| CN101322617A (en) * | 2007-06-12 | 2008-12-17 | 应明涛 | Automatic alarm steam coffee pot |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080307824A1 (en) * | 2007-06-18 | 2008-12-18 | George John Botich | Cooling insert for a container |
-
2017
- 2017-06-12 CN CN201710439289.0A patent/CN107134362B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5718146A (en) * | 1995-07-05 | 1998-02-17 | Liang; Chung-Ho | Waste level detector for vehicle cesspools |
| JP2004343274A (en) * | 2003-05-14 | 2004-12-02 | Alps Electric Co Ltd | Nonreciprocal circuit element and its manufacturing method |
| JP2007239032A (en) * | 2006-03-09 | 2007-09-20 | Tdk Corp | Sintering vessel and method for producing rare earth magnet |
| CN101322617A (en) * | 2007-06-12 | 2008-12-17 | 应明涛 | Automatic alarm steam coffee pot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107134362A (en) | 2017-09-05 |
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Granted publication date: 20190416 |