CN202343940U - Three-dimensional (3D) compression forming die - Google Patents
Three-dimensional (3D) compression forming die Download PDFInfo
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- CN202343940U CN202343940U CN2011204735009U CN201120473500U CN202343940U CN 202343940 U CN202343940 U CN 202343940U CN 2011204735009 U CN2011204735009 U CN 2011204735009U CN 201120473500 U CN201120473500 U CN 201120473500U CN 202343940 U CN202343940 U CN 202343940U
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- Prior art keywords
- pressing plate
- die
- template
- die cavity
- cavity opening
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- 230000006835 compression Effects 0.000 title abstract 4
- 238000007906 compression Methods 0.000 title abstract 4
- 238000003825 pressing Methods 0.000 claims abstract description 130
- 239000000843 powder Substances 0.000 claims abstract description 19
- 238000009747 press moulding Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000000462 isostatic pressing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000001195 anabolic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Abstract
The utility model discloses a three-dimensional (3D) compression forming die, which comprises a die frame and a plurality of pressure heads, wherein the die frame comprises a die plate, pressing plates and an enclosing pressing plate; a first pressing plate, a second pressing plate, a third pressing plate and a fourth pressing plate which are perpendicular to the plate surface of the die plate are formed at the periphery of the die plate; a die cavity opening is formed on each of the pressing plates; a plurality of pressure heads are adaptive with a die cavity opening of the die plate, the die cavity openings of the first pressing plate, the second pressing plate, the third pressing plate and the fourth pressing plate and a die cavity opening of the enclosing pressing plate; the enclosing pressing plate is arranged at the free ends of the pressing plates; a plurality of pressure heads are inserted into the die cavity openings of the die frame, which are matched with the pressure heads and form a sealing cavity into which powder can be filled in the die frame; and a plurality of pressure heads can run independently relative to the independent die frame, so that the powder in the sealing cavity is pressed to be formed. According to the 3D compression forming die, the powder is subjected to three-dimensional stressed compression, and compressed finished products are demolded in an untensioned mode, so that the defects of cracks, corner dropping and the like of the compressed finished products are overcome, and the integral density and density consistency of the compressed finished products are improved.
Description
Technical field
The utility model relates to a kind of 3D press-moulding die.
Background technology
The powder metallurgy product great majority need through technological processes such as powder preparation, compression moulding, sintering.In compression moulding technology, there are problems such as crackle, arrisdefect, density unevenness be even usually in product, and this will directly influence the presentation quality of follow-up sintering product and the technical indicator of section article inherence.
Existing powder pressing forming process has following several kinds usually:
1) unidirectional press technology for shaping.Be that former and core bar are motionless, the unidirectional pressurization of upper punch.At this moment, external friction makes pressed compact upper end density high than the lower end, and the pressed compact diameter is more little, and big highly more, then density contrast is also big more.So unidirectional compacting generally is applicable to goods or the height of ratio of height to diameter H/D≤1 and the cover parts of ratio H/T≤3 of wall thickness.
2) bidirectional pressed moulding process.Be that former is fixed, upper and lower stamping pressurizes from two ends simultaneously, claims two-way compacting simultaneously again.If unidirectional pressurization earlier, and then carry out once reverse unidirectional compacting than low side, then be called the two-way compacting of non-while, claim that again the back presses in density.This mode can realize two-way compacting on the forcing press of unidirectional pressurization.During two-way compacting, if two equate that to pressure then low-density layer is positioned at the pressed compact middle part; Otherwise low-density layer moves to low-pressure end.The green density of two-way compacting distribute more unidirectional compacting evenly, density contrast reduces, and is applicable to the part of H/D>=2 or H/T≤6.
3) unsteady press technology for shaping.Be that bottom punch is fixed, former is supported and can be fluctuated by spring, cylinder or oil cylinder.During compacting upper punch is pressurizeed, along with powder is compressed, the friction between former wall and powder increases gradually.When frictional force during greater than the supporting force (power of floating) of spring etc., former and upper punch together descend, and are equivalent to bottom punch and rise and oppositely suppress and play two-way compacting.Except that bed die floating, core bar also can float in the unsteady compacting, and Density Distribution at this moment is with two-way compacting.If bed die floating, core bar is motionless, and then to compacting, middle part density is minimum near former place approximate Double for pressed compact; The unidirectional compacting that pressed compact moves down near the similar upper punch in core bar place, density is minimum bottom.Unsteady compacting is applicable to the part of H/T≤6 or H/D>=2.
4) isostatic pressing moulding technique promptly imposes each to the compacting of pressure about equally to powder (or pressed compact) surface or to the soft mode piece surface of adorning powder (or pressed compact).
Though unidirectional compacting, two-way compacting, the briquetting process that floats are simple in structure; Only two surfaces can be stressed up and down for powder, and other four sides all receive frictional force, and just there is the situation of powder discontinuity in this; Thereby the outward appearance that causes product, the problem of uniformity variation.
And the isostatic pressing moulding technique, though there is the inefficient shortcoming of dress powder in the conforming problem of density that preferably resolves and density.
The utility model content
In order to realize that presswork does not have the stressed demoulding; Defectives such as the crackle of minimizing press-formed product, arrisdefect; Improve the global density and the consistent in density property of press-formed product; Make after the press-formed product manufacturing sintered products presentation quality, the global tissue structural homogeneity of operation better, the utility model embodiment provides a kind of 3D press-moulding die.Said technical scheme is following:
A kind of 3D press-moulding die; Comprise mould bases and be arranged at a plurality of pressure heads on the said mould bases; Said mould bases comprises template, pressing plate and envelope pressing plate; Said template laterally arranges with the envelope pressing plate, and said pressing plate is vertically installed between said template and the envelope pressing plate, said template, pressing plate and envelope pressing plate be connected to each other form one can pack powder into extrusion chamber;
Said pressing plate is vertically installed in the periphery of said template; It comprises first pressing plate, second pressing plate, the 3rd pressing plate and the 4th pressing plate; Respectively form the die cavity opening that supplies said pressure head to peg graft on said template, first pressing plate, second pressing plate, the 3rd pressing plate, the 4th pressing plate and the envelope pressing plate; Said die cavity opening is connected with said extrusion chamber, and a plurality of said pressure heads are suitable with the die cavity opening on said template, first pressing plate, second pressing plate, the 3rd pressing plate, the 4th pressing plate and the envelope pressing plate respectively.
Die cavity opening on said first pressing plate is oppositely arranged with the die cavity opening on the 3rd pressing plate; Die cavity opening on said second pressing plate is oppositely arranged with the die cavity opening on the 4th pressing plate, and the die cavity opening on the said template is oppositely arranged with the die cavity opening on the said envelope pressing plate.
The upper inner of the upper inner of said first pressing plate and the 3rd pressing plate respectively be provided with one be parallel to template inserting groove, the two ends of said envelope pressing plate are plugged in the said inserting groove.
Or the upper inner of the upper inner of said second pressing plate and the 4th pressing plate respectively be provided with one be parallel to template inserting groove, the two ends of said envelope pressing plate are plugged in the said inserting groove.
Said template is with the said pressing plate structure that is formed in one.
The beneficial effect of the technical scheme that the utility model embodiment provides is:
Be applicable to the three-dimensional compression moulding of powder of various materials; Because each pressure head, makes the three-dimensional stressed compacting of powder through independently controlling system's independent operating, presswork does not have the stressed demoulding; Thereby defectives such as the crackle of minimizing press-formed product, arrisdefect; Improve global density and the consistent in density property of press-formed product, make that sintered products presentation quality, the global tissue structural homogeneity of operation is significantly improved after the press-formed product manufacturing, its operation of while is simpler.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the die assembly modular construction figure that the utility model provides;
Fig. 2-Fig. 5 is the anabolic process sketch map of the utility model device;
Fig. 6-Fig. 7 is the pressing process sketch map of the utility model device.
Among the figure:
1, mould bases, 11, template;
2, envelope pressing plate 3, first pressing plate 4, second pressing plate 5, the 3rd pressing plate 6, the 4th pressing plate 7, pressure head.
8, die cavity opening 9, inserting groove.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model embodiment is done to describe in detail further below.
As shown in Figure 1; A kind of 3D press-moulding die; Comprise mould bases 1 and be arranged at a plurality of pressure heads 7 on the said mould bases 1, said mould bases 1 comprises template 11, pressing plate and envelope pressing plate 2, and said template 11 laterally arranges with envelope pressing plate 2; Said pressing plate is vertically installed between said template 11 and the envelope pressing plate 2, said template 11, pressing plate and envelope pressing plate 2 be connected to each other form one can pack powder into extrusion chamber;
Said pressing plate is vertically installed in the periphery of said template 11; It comprises first pressing plate 3, second pressing plate 4, the 3rd pressing plate 5 and the 4th pressing plate 6; Respectively form the die cavity opening 8 that supplies said pressure head 7 to peg graft on said template 11, first pressing plate 3, second pressing plate 4, the 3rd pressing plate 5, the 4th pressing plate 6 and the envelope pressing plate 2; Said die cavity opening 8 is connected with said extrusion chamber, and a plurality of said pressure heads 7 are suitable with the die cavity opening 8 on said template 11, first pressing plate 3, second pressing plate 4, the 3rd pressing plate 5, the 4th pressing plate 6 and the envelope pressing plate 2 respectively.
Die cavity opening 8 on said first pressing plate 3 is oppositely arranged with the die cavity opening 8 on the 3rd pressing plate 5; Die cavity opening 8 on said second pressing plate 4 is oppositely arranged with the die cavity opening 8 on the 4th pressing plate 6, and the die cavity opening 8 on the said template 11 is oppositely arranged with the die cavity opening 8 on the said envelope pressing plate 2.
The upper inner of the upper inner of said first pressing plate 3 and the 3rd pressing plate 5 respectively be provided with one be parallel to template 11 inserting groove 9, the two ends of said envelope pressing plate 2 are plugged in the said inserting groove 9.
The upper inner of the upper inner of perhaps said second pressing plate 4 and the 4th pressing plate 6 respectively be provided with one be parallel to template 11 inserting groove 8, the two ends of said envelope pressing plate 2 are plugged in the said inserting groove 8.
Preferably, template 11 is with the said pressing plate structure that is formed in one.
A plurality of said pressure heads 7 can relatively independent mould bases 1 isolated operation and with the powder pressing forming in the said extrusion chamber.
Assembling process such as Fig. 2-shown in Figure 5; Its pressing process such as Fig. 6-shown in Figure 7, the utility model device production process is following: each pressure head 7 places respectively in the die cavity opening 8 of mould bases 1, then powder is packed in the extrusion chamber; To seal in the pressing plate 2 insertion inserting grooves 9 and seal pressure; And will with its adaptive pressure head be arranged at the envelope pressing plate 2 die cavity opening 8 in carry out capping, suppress the pressure head on the relative pressing plate successively, finish until compacting; By the reverse sequence of suppressing each pressure head is resetted successively then, and take out next compacting circulation of product entering.
Above-mentioned the utility model embodiment sequence number is not represented the quality of embodiment just to description.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. a 3D press-moulding die comprises mould bases and is arranged at a plurality of pressure heads on the said mould bases, it is characterized in that,
Said mould bases comprises template, pressing plate and envelope pressing plate, and said template laterally arranges with the envelope pressing plate, and said pressing plate is vertically installed between said template and the envelope pressing plate, said template, pressing plate and envelope pressing plate be connected to each other form one can pack powder into extrusion chamber;
Said pressing plate is vertically installed in the periphery of said template; It comprises first pressing plate, second pressing plate, the 3rd pressing plate and the 4th pressing plate; Respectively form the die cavity opening that supplies said pressure head to peg graft on said template, first pressing plate, second pressing plate, the 3rd pressing plate, the 4th pressing plate and the envelope pressing plate; Said die cavity opening is connected with said extrusion chamber, and a plurality of said pressure heads are suitable with the die cavity opening on said template, first pressing plate, second pressing plate, the 3rd pressing plate, the 4th pressing plate and the envelope pressing plate respectively.
2. 3D press-moulding die according to claim 1 is characterized in that,
Die cavity opening on said first pressing plate is oppositely arranged with the die cavity opening on the 3rd pressing plate; Die cavity opening on said second pressing plate is oppositely arranged with the die cavity opening on the 4th pressing plate, and the die cavity opening on the said template is oppositely arranged with the die cavity opening on the said envelope pressing plate.
3. 3D press-moulding die according to claim 2 is characterized in that,
The upper inner of the upper inner of said first pressing plate and the 3rd pressing plate respectively be provided with one be parallel to template inserting groove, the two ends of said envelope pressing plate are plugged in the said inserting groove.
4. 3D press-moulding die according to claim 2 is characterized in that,
The upper inner of the upper inner of said second pressing plate and the 4th pressing plate respectively be provided with one be parallel to template inserting groove, the two ends of said envelope pressing plate are plugged in the said inserting groove.
5. according to the arbitrary described 3D press-moulding die of claim 1-4, it is characterized in that,
Said template is with the said pressing plate structure that is formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204735009U CN202343940U (en) | 2011-11-24 | 2011-11-24 | Three-dimensional (3D) compression forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204735009U CN202343940U (en) | 2011-11-24 | 2011-11-24 | Three-dimensional (3D) compression forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202343940U true CN202343940U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204735009U Expired - Lifetime CN202343940U (en) | 2011-11-24 | 2011-11-24 | Three-dimensional (3D) compression forming die |
Country Status (1)
| Country | Link |
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| CN (1) | CN202343940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847935A (en) * | 2012-10-07 | 2013-01-02 | 江西金力永磁科技有限公司 | Magnetic material powder forming method |
-
2011
- 2011-11-24 CN CN2011204735009U patent/CN202343940U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847935A (en) * | 2012-10-07 | 2013-01-02 | 江西金力永磁科技有限公司 | Magnetic material powder forming method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |