CN201308994Y - Cavity powder injection forming mold of signal isolator - Google Patents
Cavity powder injection forming mold of signal isolator Download PDFInfo
- Publication number
- CN201308994Y CN201308994Y CNU2008202165422U CN200820216542U CN201308994Y CN 201308994 Y CN201308994 Y CN 201308994Y CN U2008202165422 U CNU2008202165422 U CN U2008202165422U CN 200820216542 U CN200820216542 U CN 200820216542U CN 201308994 Y CN201308994 Y CN 201308994Y
- Authority
- CN
- China
- Prior art keywords
- cavity
- mold
- powder injection
- dynamic model
- signal isolator
- 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
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a powder injection forming mold, in particular to a cavity powder injection forming mold of signal isolator, which is composed of a fixed mold, a runner plate and a moving mold from up to down, wherein the moving mold is provided with a moving mold core; the moving mold core is provided with four cavities; the fixed mold plane of the fixed mold is provided with three point gates at the parts opposite to each cavity for receiving glue uniformly at the bottom of product and fill glue via the runner plate into the moving mold cavity; and a parting surface is provided between the fixed mold and the runner plate. The cavity powder injection forming mold of signal isolator uniformly receives glue from three points at bottom; the inner pressure of the cavity is uniform; the density of each part of blank after injection is not different from others significantly; the sintering shrinkage rate is consistent; thereby avoiding gradient difference of dimension; the sintered product is grinded off 0.3mm, and the blank pattern can be grinded completely, to improve product appearance.
Description
Technical field
The utility model relates to powder injection-molded mould, the powder injection-molded mould of especially a kind of signal isolator cavity.
Background technology
Metal powder injection molded (MIM) is a new forming technique that develops rapidly in the world in recent years, it is advantageous that the small-sized parts that can form any complicated shape, and each position density of goods is even, excellent performance.General technological process is for to be uniformly mixed into fine metal dust and organic binder for having the material of rheological characteristic, the die cavity that adopts advanced injector injection to have part shape forms blank, new technology removes adhesive and through sintering, make its high compaction become metallic article, key is exactly to utilize mould to obtain given shape, and this and plastic injection mold have a lot of resemblances.But the architectural feature of cavity is more special, for big dark chamber is arranged in the middle of the square ectosome.When carrying out the mould design, the common die method for designing is selected side, offer the down gate charging thereon, when the mould of Zhi Zaoing carries out powder injection forming like this, exist 2 critical defects: significantly black line appears in the cast gate place, present very significantly striped behind the sintering on the matrix, have a strong impact on outward appearance; Product has tangible gradient difference in cast gate one side and cast gate one side far away, waters the oral-lateral size obviously greater than far watering the oral-lateral size, finally causes product size not reach tolerance.
The utility model content
The technical problems to be solved in the utility model is: in order to overcome the defective of the black line of signal isolator cavity, size gradient difference, the utility model provides a kind of signal isolator cavity powder injection-molded mould.
The technical scheme that its technical problem that solves the utility model adopts is: the powder injection-molded mould of a kind of signal isolator cavity, from top to bottom be disposed with cover half, runner plate, dynamic model, has the dynamic model core rod in the dynamic model, be provided with four die cavities in the dynamic model core rod, be provided with three some cast gates that advance glue from the product bottom surface with each die cavity relative position on the cover half face of cover half, and, between dynamic model and the runner plate die joint by in the runner plate injection dynamic model die cavity.
Described some cast gate protrudes cover half face 0.1mm, and promptly the recessed blank bottom surface 0.1mm of hole irrigation mouth can avoid a cast gate to collapse material.
Described movable model intracavitary administration blank bottom thickness is than the big 0.3mm of product bottom thickness, promptly inject the blank bottom surface and on the basis of product requirement, deepened 0.3mm, utilize grinding machine to grind off behind the sintering, can guarantee the flatness of bottom surface like this, the flow liner that causes because of a cast gate can be ground off again.
The beneficial effects of the utility model are: glue is evenly advanced in 3 from the bottom surface of employings, press even relatively in the die cavity, density variation is less everywhere for the blank of injection, the sintering shrinkage unanimity, avoided the gradient difference of size, product behind the sintering grinds off 0.3mm, and black line can be ground off fully, makes product appearance be greatly improved.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the stereogram of cover half.
Fig. 3 is the structural representation of runner plate.
Fig. 4 is the perspective view of dynamic model.
Among the figure: 1. cover half, 11. cover half faces, 12. cast gates, 2. runner plate, 3. dynamic model, 31. dynamic model core rods, 32. die cavities.
The specific embodiment
Shown in 1～4, the powder injection-molded mould of a kind of signal isolator cavity, from top to bottom be disposed with cover half 1, runner plate 2, dynamic model 3, has dynamic model core rod 31 in the dynamic model 3, be provided with four die cavities 32 in the dynamic model core rod 31, be provided with three some cast gates 12 that advance glue from the product bottom surface with each die cavity 32 relative position on the cover half face 11 of cover half 1, and inject in dynamic model 3 die cavities 32 by runner plate 2, be die joint between dynamic model 3 and the runner plate 2, i.e. position, the bottom surface die joint of product.Point cast gate 12 protrudes 0.1mm on cover half face 11, promptly the recessed product bottom surface 0.1mm of hole irrigation mouth can avoid a cast gate 12 to collapse material, makes things convenient for prune node cast gate 12; 0.3mm is deepened in injection blank bottom surface on the basis of original product, utilize grinding machine to grind off behind the sintering, and flatness that like this can the boudoir bottom surface can grind off the bottom surface again because of the flow liner that a cast gate 12 causes; Eject out at end face, the thimble seal utilizes grinding machine to grind off.
When utilizing this mold injects, since be from the bottom surface 3 evenly advance glue, mould charging everywhere is consistent, and pressure is more even in the die cavity, and density variation is less everywhere thereby make the injection blank, the sintering shrinkage unanimity, avoided the gradient difference of size, and three some cast gates 12 that glue is advanced in the bottom surface at its periphery black line can appear also, but since behind the sintering product bottom surface to grind off 0.3mm, black line is promptly ground off, and the entire product outward appearance also is greatly improved.
Claims (3)
1. powder injection-molded mould of signal isolator cavity, from top to bottom be disposed with cover half (1), runner plate (2), dynamic model (3), it is characterized in that: have dynamic model core rod (31) in the dynamic model (3), be provided with four die cavities (32) in the dynamic model core rod (31), the cover half face (11) of cover half (1) is gone up and each die cavity (32) relative position is provided with three some cast gates (12) that advance glue from the product bottom surface, and, be die joint between dynamic model (3) and the runner plate (2) by in runner plate (2) injection dynamic model (3) die cavity (32).
2. the powder injection-molded mould of a kind of signal isolator cavity according to claim 1 is characterized in that: described some cast gate (12) protrudes cover half face (11) 0.1mm.
3. the powder injection-molded mould of a kind of signal isolator cavity according to claim 1 is characterized in that: injection blank bottom thickness is than the big 0.3mm of product bottom thickness in described dynamic model (3) die cavity (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202165422U CN201308994Y (en) | 2008-11-10 | 2008-11-10 | Cavity powder injection forming mold of signal isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202165422U CN201308994Y (en) | 2008-11-10 | 2008-11-10 | Cavity powder injection forming mold of signal isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201308994Y true CN201308994Y (en) | 2009-09-16 |
Family
ID=41106246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202165422U Expired - Fee Related CN201308994Y (en) | 2008-11-10 | 2008-11-10 | Cavity powder injection forming mold of signal isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201308994Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886518A (en) * | 2011-07-17 | 2013-01-23 | 刘亚 | Multi-axis powder metallurgy injection molding machine |
| WO2013010456A1 (en) * | 2011-07-17 | 2013-01-24 | Liu Jun | Multi-shaft powder metallurgy injection-moulding machine |
| CN103464758A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Injection moulding tool with function of avoiding backflow |
-
2008
- 2008-11-10 CN CNU2008202165422U patent/CN201308994Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886518A (en) * | 2011-07-17 | 2013-01-23 | 刘亚 | Multi-axis powder metallurgy injection molding machine |
| WO2013010456A1 (en) * | 2011-07-17 | 2013-01-24 | Liu Jun | Multi-shaft powder metallurgy injection-moulding machine |
| CN103464758A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Injection moulding tool with function of avoiding backflow |
| CN103464758B (en) * | 2013-08-26 | 2016-08-10 | 苏州米莫金属科技有限公司 | A kind of injecting molding die preventing from flowing backwards |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101774256B (en) | Compression injection molding machine and use method thereof | |
| CN201308994Y (en) | Cavity powder injection forming mold of signal isolator | |
| CN201791972U (en) | Forming mould for manufacturing thin-wall type magnetic ring | |
| CN203344261U (en) | Double-color injection mould | |
| CN203343437U (en) | Multidirectional-opening powder metallurgy die | |
| CN200991945Y (en) | Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die | |
| CN202318752U (en) | Double-color injection mold | |
| CN201240043Y (en) | Mould capable of preventing injection moulding product from shrinking | |
| CN201816182U (en) | Die for producing multifunctional plugs | |
| CN201308993Y (en) | Case powder injection forming mold of signal isolator | |
| CN101582611B (en) | One-step forming process for sintered NdFeB permanent magnet of motor and mould thereof | |
| CN102555039A (en) | Forming mold for soft ferrite magnetic cores | |
| CN202129444U (en) | Metal powder injection moulding concavo-convex wheel die designed with latent type cast gate | |
| CN202006560U (en) | Gate type plastic bicolor die | |
| CN201997709U (en) | Powder injection molding concave-convex wheel die with depressed thimble device | |
| CN207669704U (en) | A kind of line position molds and forced resetting precision die twice | |
| CN202148246U (en) | One-die multi-cavity lens die for compression molding of glass | |
| CN104552814A (en) | One-mold two-part injection mold | |
| CN219947064U (en) | Quick selection array setting type injection molding structure | |
| CN204914419U (en) | Three high -efficient matrix moulds | |
| CN207240742U (en) | A kind of forming through holes injection mold perpendicular to die joint | |
| CN213052744U (en) | MIM thin wall part forming device | |
| CN201511496U (en) | Auxiliary injection molding mechanism of air bag | |
| CN203592148U (en) | Ratchet wheel product sprue structure and dedicated device in metal injection molding technology | |
| CN202781673U (en) | Forming mold for seal ring of filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Changzhou Gian Technology Co., Ltd. Assignor: Wang Mingxi Contract record no.: 2010320000539 Denomination of utility model: Cavity powder injection forming mold of signal isolator Granted publication date: 20090916 License type: Exclusive License Record date: 20100506 |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHANGZHOU GIAN TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WANG MINGXI |
|
| CP03 | Change of name, title or address |
Address after: 213023, Hexi Road, Changzhou Economic Development Zone, Jiangsu, China, No. 16-8, Hexi Road Patentee after: Changzhou Gian Technology Co., Ltd. Address before: 213023 Jiangsu province Changzhou City Zhonglou District Xinggang Road No. 65-8 Patentee before: Wang Mingxi |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |