CN203994822U - A kind of low degree of eccentricity propellant spiral shell molding die - Google Patents
A kind of low degree of eccentricity propellant spiral shell molding die Download PDFInfo
- Publication number
- CN203994822U CN203994822U CN201420472075.5U CN201420472075U CN203994822U CN 203994822 U CN203994822 U CN 203994822U CN 201420472075 U CN201420472075 U CN 201420472075U CN 203994822 U CN203994822 U CN 203994822U
- Authority
- CN
- China
- Prior art keywords
- eccentricity
- copper sheathing
- mould pin
- propellant
- spiral shell
- 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
- 239000003380 propellant Substances 0.000 title claims abstract description 16
- 238000010112 shell-mould casting Methods 0.000 title claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 18
- 239000010949 copper Substances 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000010079 rubber tapping Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The utility model relates to a kind of low degree of eccentricity propellant spiral shell molding die, belongs to Design of Dies field.Mould of the present utility model, comprises precentrum, posterior pyramids, punch block, moulding steel bushing, copper sheathing, mould pin.The upper end of mould pin is arranged on the moulding steel bushing of copper sheathing upper end by punch block, the lower end of mould pin extends in the tapping channel of copper sheathing always.Mould pin and copper sheathing axiality are not more than 0.1mm.Mould of the present utility model passes through to shorten mould pin length, thereby has reduced eccentric moment, and the product degree of eccentricity is reduced to 0.05mm, has met the needs of the product degree of eccentricity, has significantly reduced production cost.
Description
Technical field
The utility model relates to a kind of low degree of eccentricity propellant spiral shell molding die, belongs to Design of Dies field.
Background technology
Along with the progress of technology, propellant size has been proposed to stricter requirement.Existing spiral shell molding die structure as shown in Figure 1, conventional art thinks that mould pin length is longer, its spiral shell presses guide effect better, therefore conventionally the upper end of mould pin is arranged between precentrum and posterior pyramids by punch block, and the lower end of mould pin extends in the tapping channel of copper sheathing always.But in actual use, find that the mould pin of longer stroke can be subject to larger eccentric moment, produce the molded propellant degree of eccentricity of spiral shell higher, be difficult to meet the requirement of propellant to size.
Utility model content
The purpose of this utility model is higher in order to solve the propellant degree of eccentricity of traditional spiral shell molding die pressure stretch, is difficult to meet the requirement of propellant to size, and a kind of low degree of eccentricity propellant spiral shell molding die is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of low degree of eccentricity propellant spiral shell molding die of the present utility model, comprises precentrum, posterior pyramids, punch block, moulding steel bushing, copper sheathing, mould pin.The upper end of mould pin is arranged on the moulding steel bushing of copper sheathing upper end by punch block, the lower end of mould pin extends in the tapping channel of copper sheathing always.Mould pin and copper sheathing axiality are not more than 0.1mm.
Beneficial effect
Mould of the present utility model passes through to shorten mould pin length, thereby has reduced eccentric moment, and the product degree of eccentricity is reduced to 0.05mm, has met the needs of the product degree of eccentricity, has significantly reduced production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional spiral shell molding die;
Fig. 2 is the structural representation of the utility model spiral shell molding die;
Wherein, 1-precentrum; The punch block of 2-traditional structure; 3-posterior pyramids; 4-moulding steel bushing; 5-copper sheathing; The mould pin of 6-traditional structure; 12-punch block; 16-mould pin.
The specific embodiment
Below in conjunction with drawings and Examples, content of the present utility model is described further.
Embodiment
A kind of low degree of eccentricity propellant spiral shell molding die of the present utility model, as shown in Figure 2, comprises precentrum 1, posterior pyramids 3, punch block 12, moulding steel bushing 4, copper sheathing 5, mould pin 16; The upper end of mould pin 16 is arranged on the moulding steel bushing 4 of copper sheathing 5 upper ends by punch block 12, the lower end of mould pin 16 extends in the tapping channel of copper sheathing 5 always.Mould pin and copper sheathing axiality are not more than 0.1mm.
Adopt two cobalt-1 propellant test specimen of 200 moulding of mould test of the present utility model, the maximum 0.05mm of the degree of eccentricity, average 0.03mm (adopting two cobalt-1 propellant test specimen degree of eccentricity average out to 0.4mm of traditional spiral shell compression mould moulding).
Claims (2)
1. a low degree of eccentricity propellant spiral shell molding die, comprises precentrum, posterior pyramids, punch block, moulding steel bushing, copper sheathing, mould pin; It is characterized in that: the upper end of mould pin is arranged on the moulding steel bushing of copper sheathing upper end by punch block, the lower end of mould pin extends in the tapping channel of copper sheathing always.
2. a kind of low degree of eccentricity propellant spiral shell molding die as claimed in claim 1, is characterized in that: mould pin and copper sheathing axiality are not more than 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472075.5U CN203994822U (en) | 2014-08-21 | 2014-08-21 | A kind of low degree of eccentricity propellant spiral shell molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472075.5U CN203994822U (en) | 2014-08-21 | 2014-08-21 | A kind of low degree of eccentricity propellant spiral shell molding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203994822U true CN203994822U (en) | 2014-12-10 |
Family
ID=52034880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420472075.5U Expired - Fee Related CN203994822U (en) | 2014-08-21 | 2014-08-21 | A kind of low degree of eccentricity propellant spiral shell molding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203994822U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351442A (en) * | 2016-06-08 | 2017-11-17 | 王振宇 | A kind of novel extrusion mould |
| CN109081762A (en) * | 2017-12-13 | 2018-12-25 | 北京航空航天大学 | A kind of three-stage spiral shell pressing molding device |
-
2014
- 2014-08-21 CN CN201420472075.5U patent/CN203994822U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351442A (en) * | 2016-06-08 | 2017-11-17 | 王振宇 | A kind of novel extrusion mould |
| CN107351442B (en) * | 2016-06-08 | 2019-01-08 | 深圳市中拓模塑科技有限公司 | A kind of novel extrusion mould |
| CN109081762A (en) * | 2017-12-13 | 2018-12-25 | 北京航空航天大学 | A kind of three-stage spiral shell pressing molding device |
| CN109081762B (en) * | 2017-12-13 | 2020-07-14 | 北京航空航天大学 | Three-section type screw press forming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |