CN203077430U - Lower stamping die of microwave oven magnetic mould - Google Patents
Lower stamping die of microwave oven magnetic mould Download PDFInfo
- Publication number
- CN203077430U CN203077430U CN 201220705507 CN201220705507U CN203077430U CN 203077430 U CN203077430 U CN 203077430U CN 201220705507 CN201220705507 CN 201220705507 CN 201220705507 U CN201220705507 U CN 201220705507U CN 203077430 U CN203077430 U CN 203077430U
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- magnetic
- micro
- wave oven
- stamping die
- inductive block
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Abstract
A lower stamping die of a microwave oven magnetic mould comprises a magnetic lower stamping die main body, a non-magnetic block, and a non-magnetic top cover located above the non-magnetic block and the lower stamping die main body, wherein the non-magnetic block is an annular cylinder. When the inner bore diameter of the lower stamping die is d, and the external diameter of the lower stamping die is D2, the inner diameter of the non-magnetic block equals to d+k (D2-d), wherein k is within the range of 0.2-0.75. The axial thickness H1 of the non-magnetic block is within the range of 3-15mm, and the thickness H2 of the non-magnetic top cover is within the range of 1-7mm. By the adoption of the lower stamping die, the magnetic field orientation of microwave oven magnetism produced satisfies the demands of the microwave oven magnetism, product percent of pass is high, and production cost is low.
Description
Technical field
The utility model relates to a kind of following punch die of micro-wave oven magnetic mould, belongs to micro-wave oven magnetic mould technical field.
Background technology
ZL 200420102604.9 proposes the special-purpose magnet steel mould of a kind of micro-wave oven, it is provided with the non-magnetic inductive block that magnetic resistance is reduced to the middle part by the edge in top of punch die down, make alignment magnetic field form the convergent type Distribution of Magnetic Field, thereby make magnet steel have higher central magnetic field intensity, because non-magnetic inductive block is taper, and be difficult to weld firm between the following punch die body, influence the moulding qualification rate of microwave oven magnetic steel.ZL200520100496.6 proposes a kind of microwave oven magnetic steel mould, punch die is provided with non-magnetic block down near an end of die cavity under it, this punch die tool down is when producing product, at magnetic conduction block not with bigger towards the main body intersection down because of magnetic field gradient, the product of producing easily cracks, and has influenced the final qualification rate of micro-wave oven magnetic.
The utility model content
The purpose of this utility model is to provide a kind of following punch die of micro-wave oven magnetic mould, can effectively improve product percent of pass, reduces micro-wave oven magnetic production cost.
The technical solution of the utility model is, it is by die body under the magnetic conduction, magnetic inductive block and be positioned at not that not magnetic conduction top cover three parts of the top of magnetic inductive block and following die body constitute not, and described not magnetic inductive block is the annular cylinder.
As preferably, instantly the internal orifice dimension of die body be d, when the overall diameter of die body is D2 down, then the annular cylinder not the interior diameter D1 of magnetic inductive block equal d+k (D2-d), wherein k is between 0.2 ~ 0.75.
Further, preferred value k gets between 0.3 ~ 0.5.
Described annular cylinder not the axial width H1 of magnetic inductive block between 3 ~ 15mm;
Magnetic conduction top cover thickness H2 is not between 1 ~ 7mm.
Further, H1 is between 5 ~ 12mm; H2 is between 2 ~ 5mm.
The die body material is 45# steel, A3 steel, Cr12 etc. under the described magnetic conduction.
Described not magnetic inductive block and not the magnetic conduction cap material be 1Cr18Ni9Ti, 0Cr18Ni9, non-magnesium hard alloy, no magnetic potassium steel, copper, aluminium, copper alloy, aluminium alloy, aluminium bronze etc.
The beneficial effects of the utility model: the micro-wave oven magnetic product Distribution of Magnetic Field of producing meets the requirements, and product cracking rate is low, the qualification rate height, and production cost is low.
Description of drawings
Accompanying drawing 1 is the front view of the utility model one embodiment.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing 1.
Embodiment 1:
With reference to accompanying drawing: a kind of following punch die of micro-wave oven magnetic mould, it is by die body 1 down, magnetic inductive block 2 and be positioned at not that not magnetic conduction top cover 3 three parts of the top of magnetic inductive block and following die body constitute not, and described not magnetic inductive block is the annular cylinder.
The following die body 1 of present embodiment is the following die body of 45# steel matter.
The annular cylinder not magnetic inductive block 2 and not magnetic conduction top cover 3 are 1Cr18Ni9Ti materials.
Present embodiment following punch die internal orifice dimension d be 25mm, following punch die overall diameter D2 is 70mm, the annular cylinder not interior diameter D1 of magnetic inductive block equals d+k (D2-d), wherein k gets 0.5, promptly the inner diameter size D1 of magnetic inductive block is not 47.5mm, the axial width H1 of magnetic inductive block is not 10mm, and magnetic conduction top cover thickness H2 is not 3mm.
The course of work of the present utility model is as follows:
Punch die under this and accessories such as the upper trimming die that adopts the known technology design, core bar are assembled into the mould of the complete micro-wave oven magnetic mould of a cover, mould is loaded onto magnetic field orientating hydraulic press workbench, ferrite slurry is added in the mould type cavity, the ferrite slurry particulate is magnetized orientation under the magnetic field effect of magnetizing that the hydraulic press magnetic charging system produces, under the squeezing action of hydraulic press, slip is progressively dewatered becomes micro-wave oven magnetic green compact simultaneously.Because the not magnetic inductive block of following punch die outer radius has bigger magnetic resistance, the magnetic line of force tendency of the alignment magnetic field interior bore region of punch die down converges, thereby the micro-wave oven magnetic that adopts this time punch die to produce has the convergent type Distribution of Magnetic Field, and this magnetic field orientating satisfies the requirement of micro-wave oven magnetic; The not magnetic conduction top cover that covers the patrix top has weakened the not magnetic field gradient of magnetic inductive block and following die body intersection, has avoided micro-wave oven magnetic product to ftracture herein.
After the micro-wave oven magnetic green part that forms out handled by operations such as known high temperature sintering, mill processing, cleaning, visual examinations, be processed into ф 61.5 * 21.5 * 13.1 micro-wave oven magnetic magnet steel, testing its central magnetic field intensity is 1850Gs, reach customer requirement, counting the final products qualification rate is 91%.
Embodiment 2:
With reference to accompanying drawing: a kind of following punch die of micro-wave oven magnetic mould, the following die body 1,1Cr18Ni9Ti material that the comprises 45# steel matter not magnetic conduction top cover 3 of magnetic inductive block 2,1Cr18Ni9Ti material constitutes.Following punch die internal orifice dimension d is 25mm, and following punch die overall diameter D2 is 70mm, and the inner diameter size D1 of magnetic inductive block does not equal d+k (D2-d), wherein k gets 0.3, promptly the inner diameter size D1 of magnetic inductive block is not 38.5mm, and the axial width H1 of magnetic inductive block is not 6mm, and magnetic conduction top cover thickness H2 is not 4mm.
Other process conditions are identical with embodiment 1.ф 61.5 * 21.5 * 13.1 micro-wave oven magnetic magnet steel central magnetic field intensity that test processes are 1820Gs, reach customer requirement, and counting the final products qualification rate is 93%.
Embodiment 3:
With reference to accompanying drawing: a kind of following punch die of micro-wave oven magnetic mould, the following die body 1,1Cr18Ni9Ti material that the comprises 45# steel matter not magnetic conduction top cover 3 of magnetic inductive block 2,1Cr18Ni9Ti material constitutes.Following punch die internal orifice dimension d is 25mm, and following punch die overall diameter D2 is 70mm, and the inner diameter size D1 of magnetic inductive block does not equal d+k (D2-d), wherein k gets 0.4, promptly the inner diameter size D1 of magnetic inductive block is not 43mm, and the axial width H1 of magnetic inductive block is not 7mm, and magnetic conduction top cover thickness H2 is not 2.5mm.
Other process conditions are identical with embodiment 1.ф 61.5 * 21.5 * 13.1 micro-wave oven magnetic magnet steel central magnetic field intensity that test processes are 1870Gs, reach customer requirement, and counting the final products qualification rate is 95%.
Above-described specific embodiment only is the utility model preferred embodiment, and the equal design that the scope of applying for a patent according to the utility model is done all should be within claims scope of the present utility model.
Claims (7)
1. the following punch die of a micro-wave oven magnetic mould is characterized in that, it is not by die body under the magnetic conduction, magnetic inductive block and not magnetic conduction top cover three parts that are positioned at die body top under the not magnetic inductive block and magnetic conduction constitute, and described not magnetic inductive block is the annular cylinder.
2. according to the following punch die of the described a kind of micro-wave oven magnetic mould of claim 1, it is characterized in that, instantly the internal orifice dimension of die body be d, when down the overall diameter of die body is D2, then the annular cylinder not the interior diameter D1 of magnetic inductive block equal d+k (D2-d), wherein k is between 0.2 ~ 0.75.
3. according to the following punch die of claim 1 or 2 described a kind of micro-wave oven magnetic moulds, it is characterized in that, described annular cylinder not the axial width H1 of magnetic inductive block between 3 ~ 15mm.
4. according to the following punch die of the described a kind of micro-wave oven magnetic mould of claim 1, it is characterized in that described not magnetic conduction top cover thickness H2 is between 1 ~ 7mm.
5. according to the following punch die of the described a kind of micro-wave oven magnetic mould of claim 2, it is characterized in that described k is between 0.3 ~ 0.5.
6. according to the following punch die of the described a kind of micro-wave oven magnetic mould of claim 3, it is characterized in that the axial width H1 of described not magnetic inductive block is between 5 ~ 12mm.
7. according to the following punch die of the described a kind of micro-wave oven magnetic mould of claim 4, it is characterized in that described not magnetic conduction top cover thickness H2 is between 2 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705507 CN203077430U (en) | 2012-12-19 | 2012-12-19 | Lower stamping die of microwave oven magnetic mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705507 CN203077430U (en) | 2012-12-19 | 2012-12-19 | Lower stamping die of microwave oven magnetic mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203077430U true CN203077430U (en) | 2013-07-24 |
Family
ID=48823299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220705507 Expired - Lifetime CN203077430U (en) | 2012-12-19 | 2012-12-19 | Lower stamping die of microwave oven magnetic mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203077430U (en) |
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2012
- 2012-12-19 CN CN 201220705507 patent/CN203077430U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
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| CX01 | Expiry of patent term |