CN105618581A - Nitrogen cylinder elastic ejection type deep drawing mold - Google Patents
Nitrogen cylinder elastic ejection type deep drawing mold Download PDFInfo
- Publication number
- CN105618581A CN105618581A CN201610034779.8A CN201610034779A CN105618581A CN 105618581 A CN105618581 A CN 105618581A CN 201610034779 A CN201610034779 A CN 201610034779A CN 105618581 A CN105618581 A CN 105618581A
- Authority
- CN
- China
- Prior art keywords
- nitrogen cylinder
- mold
- die
- upper mould
- counterdie
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
Abstract
The invention relates to a nitrogen cylinder elastic ejection type deep drawing mold. The mold comprises an upper mold and a lower mold joined with each other through a guide column-guide sleeve mechanism; a guide sleeve is fixed on the upper mold; and a guide column is fixed on the lower mold. The mold is characterized in that a concave-convex mold arranged on the upper mold is opposite to a concave mold arranged on the lower mold; a nitrogen cylinder spring is arranged at one end of the outer side of the lower mold, and is joined with the concave mold through a three-fork top plate and an ejector in sequence; the three-fork top plate is arranged in a three-fork groove of a convex mold; and a beating plate is arranged in the convex mold. The nitrogen cylinder spring is used for replacing traditional rubber; the edge pressing force is always kept in a proper numerical value range by using powerful, basically constant and stable elasticity of the nitrogen cylinder spring, so that a material can smoothly enter a molding cavity of the concave mold, the drawing requirement can be satisfied by once deep drawing, and the effects of no crack, smooth peripheral surface and no wrinkles are achieved; and the mold finishing workload is reduced to 1/4 of traditional workload along with optimization of the mold structure.
Description
Technical field
The present invention relates to a kind of mould, particularly relate to a kind of nitrogen cylinder bullet top formula cupping tool.
Background technology
In the band fan blade rotor of brushless direct-current axial fan, internally installed there is magnet steel, the yoke of outside close-fitting fan blade is its core part. Yoke is 3.5mm because of its wall thickness, and from a cost perspective, selecting Sheet Metal Forming Technology is desirable selection. For the requirement to Deep-drawing property and magnetic property, yoke material is defined as low carbon steel plate. Owing to this rotation speed of fan is 3000 revs/min, thus the requirement of balance is very high, otherwise when blower fan is properly functioning, very big vibrations will be caused. Can this balance index realize, and precision and the quality of this yoke drawing part play the important and pivotal role.
For completing band fan blade rotor it may first have to obtain qualified yoke, this is accomplished by being completed by blanking and drawing twice technique. Adopt traditional structure rubber bullet top formula yoke blanking and drawing composite die, it will be effectively improved production efficiency. The plate cut out is placed in the stripper of counterdie upper surface, and against its position fixed pin. When upper mould is descending, the cylindrical of punch-die inserts the endoporus of die and just completes blanking operation; Along with upper mould continues descending, the lower plane of punch-die is pushed down blank and is started deep-drawing deformation, at the same time on ejector plane to be close to blank pressurized descending, until drawing is complete.
Finding aborning, the blanking of this mould initial period is very well, but drawing sequence immediately after, has just shown fatal unstability, namely often occurs serious wrinkling. Adopt traditional rubber bullet top mechanism, due to workpiece material too thick (reaching 3.5mm), cause pressure-pad-force wretched insufficiency, ultimately result in that workpiece is wrinkling, profile distorts even by drawing crack, and owing to rubber gross thickness must be over 200mm, so that rubber bolt 19 is broken again and again. The theoretical foundation of above-mentioned analysis essentially consists in rubber bullet top mechanism and starts to terminating the process of pressure-pad-force change to be maximum from being minimal to from drawing, and from drawing principle, and the process of pressure-pad-force change should be substantially constant or minimum from being up to.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, it is provided that a kind of guarantee nitrogen cylinder spring all the time to yoke blank keep constant force pressurized state bullet top formula cupping tool.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of nitrogen cylinder bullet top formula cupping tool, including: it is mutually linked upper die and lower die together by guide pillar-guide sleeve mechanism, described upper mould fixes guide pin bushing, described counterdie is fixedly installed guide pillar, it is characterized in that, the die that the concave-convex mold that described upper mould is arranged is arranged with described counterdie is oppositely arranged, described counterdie lateral ends is provided with nitrogen cylinder spring, described nitrogen cylinder spring passes sequentially through trident top board and ejector and is connected with described die, described trident top board is arranged in the trident groove of punch, it is additionally provided with in described punch and re-packs.
In a preferred embodiment of the present invention, described concave-convex mold peripheral shape and described die inner circumferential shape are coincide, and described concave-convex mold can in the described die of embedding of matched in clearance.
In a preferred embodiment of the present invention, described concave-convex mold is provided with the opening inner edge towards described die.
In a preferred embodiment of the present invention, described die is additionally provided with stripper towards described upper mould side, and described stripper is semi-circular, and described semi-circular inboard groove is identical with the groove edge shape of described die.
In a preferred embodiment of the present invention, described nitrogen cylinder spring arranging plunger rod, described plunger rod is connected described trident push rod.
In a preferred embodiment of the present invention, described upper mould and described counterdie are respectively provided with cope match-plate pattern and lower bolster, and described cope match-plate pattern is fixing connects described guide pin bushing, and described lower bolster is fixing connects guide pillar, described upper mould is fixed on cope match-plate pattern, and described counterdie is fixed on lower bolster.
In a preferred embodiment of the present invention, described upper mould is fixed on cope match-plate pattern by upper mould fixed plate, is provided with upper padding plate between described upper mould fixed plate and described upper mould.
In a preferred embodiment of the present invention, described counterdie is fixed on lower bolster by the fixing plate of counterdie, and described counterdie is fixing is provided with lower bolster between plate and described counterdie.
In a preferred embodiment of the present invention, the one end outside described upper mould is provided with die shank.
The invention solves the defect existed in background technology, the present invention possesses following beneficial effect:
Owing to the present invention is when arranging elastic mechanism, instead of traditional rubber with nitrogen cylinder spring, thus overcoming the wrinkling and deformation 1. caused because of pressure-pad-force deficiency; 2. because drawing stroke is long, former rubber trip bolt is made again and again to be broken; 3. a secondary Drawing Die is only needed can to meet drawing requirement (if needing three pairs with traditional structure).
The working cylinder of nitrogen cylinder spring is installed in the bottom of lower bolster, and its piston rod is connected with ejector mutually by trident top board, to guarantee that yoke blank is kept constant force pressurized state by nitrogen cylinder spring all the time.
The perpendicularity of yoke, axiality, all within 0.050, reach designing requirement, have fully demonstrated the nitrogen cylinder spring drawing to deep cylinder or heavy wall class part and have had good result of use, and the cupping tool design of like product is had good promotional value.
From above-mentioned analysis it can be seen that be applied to the Dan Ding mechanism of cupping tool by nitrogen cylinder spring, can more desirably solve drawing crack or this technical barrier wrinkling. Utilize that nitrogen cylinder spring is powerful, substantially constant and elastic force smoothly, pressure-pad-force is made to remain in a suitable numerical range, ensure that material can smoothly enter concave die cavity, only once drawing just meets drawing requirement, and do not break, circumferential surface is smooth, without wrinkling, along with the optimization of mould structure, the workload that repairs a die is down to original 1/4th. The application of technique, has also greatly improved the Deep-drawing property of material, makes the initial extensibility selected better but expensive cold-rolled steel sheet ST14, cheap hot rolling acidity steel plate SPHC is substituted, significantly reduce production cost. As production in enormous quantities, product have quality controllable, risk is little, the advantage of smail investments and quick rerurn, the desirable structure choice of cupping tool of can yet be regarded as.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
Fig. 2 is the concave-convex mold profile of the preferred embodiments of the present invention;
Fig. 3 is the front view of the die of the preferred embodiments of the present invention;
Fig. 4 is the front view of the stripper of the preferred embodiments of the present invention;
Fig. 5 is the profile of the stripper of the preferred embodiments of the present invention;
Fig. 6 is the front view of the punch of the preferred embodiments of the present invention;
Fig. 7 is the front view of the punch of the preferred embodiments of the present invention;
Fig. 8 is the front view with fan blade rotor;
Fig. 9 is the profile with fan blade rotor;
Figure 10 is the profile of magnet steel;
In figure: 1, cope match-plate pattern, 2, guide pin bushing, 3, guide pillar, 4, die shank, 5, upper padding plate, 6, upper mould fixed plate, 7, re-pack, 8, concave-convex mold, 9, stripper, 10, die, 11, ejector, 12, trident top board, 13, punch, 14, lower bolster, 15, the fixing plate of counterdie, 16, lower bolster, 17, nitrogen cylinder spring 17,18, band fan blade rotor, 19, magnet steel.
Detailed description of the invention
Presently in connection with drawings and Examples, the present invention is further detailed explanation, and these accompanying drawings are the schematic diagram of simplification, and the basic structure of the present invention is only described in a schematic way, and therefore it only shows the composition relevant with the present invention.
Nitrogen cylinder, also known as nitrogen cylinder spring 17, it it is a kind of novel elastic assembly being working media with high pressure nitrogen, it has, and volume is little, elastic force big, stroke length, stable working, manufactures precision, long service life (1,000,000 times), spring curve is mild, and do not need unique advantages such as pretension, and there is the special performance that the initial elastic force pressure not available for common elastic assembly such as metal spring, rubber and air cushion is powerful, for the work replacing common elastic assembly to be difficult to. And require from drawing, nitrogen cylinder spring 17 can meet the process substantially constant of pressure-pad-force change, if therefore it be applied to cupping tool, it is achieved elastic force pressure is constant and deferred action, is the optimal elastomeric element of a kind of a new generation with flex capability.
As Figure 1-10 shows, a kind of nitrogen cylinder bullet top formula cupping tool, including: it is mutually linked upper die and lower die together by guide pillar 3-guide pin bushing 2 mechanism, described upper mould fixes guide pin bushing 2, described counterdie is fixedly installed guide pillar 3, the die 10 that the concave-convex mold 138 that upper mould is arranged and described counterdie are arranged is oppositely arranged, described counterdie lateral ends is provided with nitrogen cylinder spring 17, described nitrogen cylinder spring 17 passes sequentially through trident top board 12 and ejector 11 and is connected with described die 10, described trident top board 12 is arranged in the trident groove of punch 13, is additionally provided with and re-packs 7 in described punch 13.
Concave-convex mold 138 peripheral shape and die 10 inner circumferential shape are coincide, and concave-convex mold 138 in the described die 10 of embedding of matched in clearance, concave-convex mold 138 can be provided with the opening inner edge towards described die 10.
Die 10 is additionally provided with stripper 9 towards described upper mould side, and described stripper 9 is semi-circular, and described semi-circular inboard groove is identical with the groove edge shape of described die 10.
Arranging plunger rod on nitrogen cylinder spring 17, described plunger rod is connected described trident push rod, and upper mould lateral ends is provided with die shank 4.
Upper mould and described counterdie are respectively provided with cope match-plate pattern 1 and lower bolster 16, described cope match-plate pattern 1 is fixing connects described guide pin bushing 2, described lower bolster 16 is fixing connects guide pillar 3, upper mould is fixed on cope match-plate pattern 1, described counterdie is fixed on lower bolster 16, and upper mould is fixed on cope match-plate pattern 1 by upper mould fixed plate 6, is provided with upper padding plate 5 between upper mould fixed plate 6 and upper mould, counterdie is fixed on lower bolster 16 by the fixing plate 15 of counterdie, and counterdie is fixing is provided with lower bolster 14 between plate 15 and counterdie.
The present invention is that this operation can overcome the problems such as the wrinkling and tensioning member torsional deformation that is easily generated because workpiece material is blocked up with nitrogen cylinder spring 17 for the blanking and drawing composite die playing top part. During work, billot is pushed along counterdie positive stripper 9, when covering blanking die 10 hole, punching press can be carried out. The drawing stage is entered immediately after completing blanking, namely along with the pressure down of punch-die 10, ejector 11 is also depressed with drawing material, ejector 11 promotes again trident top board 12, the plunger rod that final trident top board 12 promotes nitrogen cylinder is descending, under the bullet pressure on top surface of nitrogen cylinder, make pressure-pad-force just can reach 1.6 tons (i.e. 16000N) in original state, more than required 1.4 tons (referring to calculating). During upper mould backhaul, positive stripper 9 unloading waste material, yoke drawing part is stayed in punch-die 10 hole, is re-packed and 7 lays.
(1) drawing pressure calculates
10 steel �� b=400MPa, Fig. 3 Size calculation the development size obtaining yoke drawing part is D=154mm,
Then drawing coefficient m=d/D=92.5/154=0.6
Drawing pressure COEFFICIENT K 1=0.86 is checked in by " Stamping Die Design handbook " P189 table 5-5
Then drawing pressure P=K1 �� dt �� b=0.86 �� �� 92.5 �� 3.5 �� 400=299744.4N=30 ton
(2) pressure-plate-force calculates
Binder area F=�� (1542-92.52)/4=11900mm2
Unit are pressure-plate-force p=1.2MPa
Then, pressure-plate-force Py=Fp=11900 �� 1.2=14280.5N=1.4 ton
Just meet this pressure-plate-force requirement for initiateing at stroke, therefore select to meet, shown in Fig. 5, the pressure curve that initial elastic force pressure is 16000N, namely determine selection " KALLERLCF3000-064 nitrogen cylinder spring 17 " and be required to be nitrogen cylinder inflated with nitrogen pressure
Above according to the desirable embodiment of the present invention for enlightening, by above-mentioned description, related personnel in the scope not necessarily departing from this invention technological thought, can carry out various change and amendment completely. The technical scope of this invention is not limited to the content in description, it is necessary to determine technical scope according to right.
Claims (9)
1. a nitrogen cylinder bullet top formula cupping tool, including: it is mutually linked upper die and lower die together by guide pillar-guide sleeve mechanism, described upper mould fixes guide pin bushing, described counterdie is fixedly installed guide pillar, it is characterized in that, the die that the concave-convex mold that described upper mould is arranged is arranged with described counterdie is oppositely arranged, described counterdie lateral ends is provided with nitrogen cylinder spring, described nitrogen cylinder spring passes sequentially through trident top board and ejector and is connected with described die, described trident top board is arranged in the trident groove of punch, is additionally provided with and re-packs in described punch.
2. nitrogen cylinder bullet top according to claim 1 formula cupping tool, it is characterised in that: described concave-convex mold peripheral shape and described die inner circumferential shape are coincide, and described concave-convex mold can in the described die of embedding of matched in clearance.
3. nitrogen cylinder bullet top according to claim 1 and 2 formula cupping tool, it is characterised in that: described concave-convex mold is provided with the opening inner edge towards described die.
4. nitrogen cylinder bullet top according to claim 1 formula cupping tool, it is characterised in that: described die is additionally provided with stripper towards described upper mould side, and described stripper is semi-circular, and described semi-circular inboard groove is identical with the groove edge shape of described die.
5. nitrogen cylinder bullet top according to claim 1 formula cupping tool, it is characterised in that: arranging plunger rod on described nitrogen cylinder spring, described plunger rod is connected described trident push rod.
6. nitrogen cylinder bullet top according to claim 1 formula cupping tool, it is characterized in that: described upper mould and described counterdie are respectively provided with cope match-plate pattern and lower bolster, described cope match-plate pattern is fixing connects described guide pin bushing, described lower bolster is fixing connects guide pillar, described upper mould is fixed on cope match-plate pattern, and described counterdie is fixed on lower bolster.
7. nitrogen cylinder bullet top according to claim 6 formula cupping tool, it is characterised in that: described upper mould is fixed on cope match-plate pattern by upper mould fixed plate, is provided with upper padding plate between described upper mould fixed plate and described upper mould.
8. nitrogen cylinder bullet top according to claim 6 formula cupping tool, it is characterised in that: described counterdie is fixed on lower bolster by the fixing plate of counterdie, and described counterdie is fixing is provided with lower bolster between plate and described counterdie.
9. nitrogen cylinder bullet top according to claim 1 formula cupping tool, it is characterised in that: the one end outside described upper mould is provided with die shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610034779.8A CN105618581A (en) | 2016-01-20 | 2016-01-20 | Nitrogen cylinder elastic ejection type deep drawing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610034779.8A CN105618581A (en) | 2016-01-20 | 2016-01-20 | Nitrogen cylinder elastic ejection type deep drawing mold |
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| Publication Number | Publication Date |
|---|---|
| CN105618581A true CN105618581A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610034779.8A Pending CN105618581A (en) | 2016-01-20 | 2016-01-20 | Nitrogen cylinder elastic ejection type deep drawing mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186047A (en) * | 2017-06-05 | 2017-09-22 | 湖南七纬科技有限公司 | A kind of aluminium alloy extrusions processing blanking die |
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| JP2006305621A (en) * | 2005-05-02 | 2006-11-09 | Bridgestone Corp | Pressing die and method for sheet metal processing |
| CN201357186Y (en) * | 2009-03-11 | 2009-12-09 | 上海龙川塑料制品有限公司 | Stamping and drawing die device |
| CN102310147A (en) * | 2011-09-26 | 2012-01-11 | 奇瑞汽车股份有限公司 | Molding die for processing high-tension plate parts |
| CN203316633U (en) * | 2013-05-27 | 2013-12-04 | 上海工程技术大学 | Improved discharged material ejecting structure of blanking die |
| CN103639299A (en) * | 2013-11-27 | 2014-03-19 | 梧州恒声电子科技有限公司 | Copper ring deep drawing trimming die |
| CN104785636A (en) * | 2015-04-09 | 2015-07-22 | 奇瑞汽车股份有限公司 | Stretching mold |
| CN205463909U (en) * | 2016-01-20 | 2016-08-17 | 苏州工业职业技术学院 | Nitrogen jar bullet top formula deep -drawing mould |
-
2016
- 2016-01-20 CN CN201610034779.8A patent/CN105618581A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305621A (en) * | 2005-05-02 | 2006-11-09 | Bridgestone Corp | Pressing die and method for sheet metal processing |
| CN201357186Y (en) * | 2009-03-11 | 2009-12-09 | 上海龙川塑料制品有限公司 | Stamping and drawing die device |
| CN102310147A (en) * | 2011-09-26 | 2012-01-11 | 奇瑞汽车股份有限公司 | Molding die for processing high-tension plate parts |
| CN203316633U (en) * | 2013-05-27 | 2013-12-04 | 上海工程技术大学 | Improved discharged material ejecting structure of blanking die |
| CN103639299A (en) * | 2013-11-27 | 2014-03-19 | 梧州恒声电子科技有限公司 | Copper ring deep drawing trimming die |
| CN104785636A (en) * | 2015-04-09 | 2015-07-22 | 奇瑞汽车股份有限公司 | Stretching mold |
| CN205463909U (en) * | 2016-01-20 | 2016-08-17 | 苏州工业职业技术学院 | Nitrogen jar bullet top formula deep -drawing mould |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186047A (en) * | 2017-06-05 | 2017-09-22 | 湖南七纬科技有限公司 | A kind of aluminium alloy extrusions processing blanking die |
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Application publication date: 20160601 |
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