CN204385093U - Improve the Novel tooling die of civilian double-basis solid column density - Google Patents
Improve the Novel tooling die of civilian double-basis solid column density Download PDFInfo
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- CN204385093U CN204385093U CN201420824449.5U CN201420824449U CN204385093U CN 204385093 U CN204385093 U CN 204385093U CN 201420824449 U CN201420824449 U CN 201420824449U CN 204385093 U CN204385093 U CN 204385093U
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Abstract
The utility model discloses a kind of Novel tooling die improving civilian double-basis solid column density, relate to civilian double-base powder solventless method and revolve extrusion forming field, comprise the forming part of head and the installation portion of afterbody, described forming part is a pre-large post-small nearly cone structure, and its front portion is a cone point is the cone of spherical crown surface.The utility model be a kind of shaped charge density larger evenly, the mould that shaping load is lower.
Description
Technical field
The utility model relates to civilian double-base powder solventless method and revolves extrusion forming field, is applied to the molded dissimilar energetic material of spiral shell.
Background technology
The main component of current civilian double-base powder has: NC, NG, softening agent and other energetic material, these starting material are in pressure stretch process, mutual slippage between NC macromole, macromolecular chain entirety itself or local are also done and are rotated and elongation activity strongerly, mechanical state residing for pressure stretch machine moves based on class quasi-fluid, also produce with elastomeric state deformation, spice reaches shaping object by the expansion of pressure stretch machine, extruding.Spice by the impact of mold shape, causes spice stroke in cone to differ, thus causes spice velocity of flow in cone to differ in pressure stretch machine cone, and this just forms the little and heterogeneity of the shaping rear density of powder column.
By analysis above, we can sum up the subject matter affecting civilian double-basis solid column density, i.e. spice velocity of flow heterogeneity in pressure stretch machine cone.Current employing be in the middle part of pressure stretch machine, add " floral disc " punch block, adjust the velocity of flow homogeneity of spice in cone, the shaping rear density of spice be large to reach, the uniform object of density distribution, but through a large amount of molded test, also there is following problem:
1, shaping rear grain density distribution is even not, and grain density is large not, fails to reach the requirement of product performance.
2, " floral disc " increases the resistance to flow of spice, increases shaping load.
3, the punch block muscle of " floral disc " is many, and spice is after floral disc, and cut area is large, and spice is difficult to healing, and grainend has punch block vestige after shaping.
4, spice velocity of flow difference in cone is less, and spice is mediated uneven.
5, after adding " floral disc ", spice internal stress can be caused many, spice disperses, and is unfavorable for the homogeneity of spice.
Utility model content
The purpose of this utility model is: propose a kind of shaped charge density larger evenly, the mould that shaping load is lower.
The purpose of this utility model is realized by following technical proposals:
Improve a Novel tooling die for civilian double-basis solid column density, comprise the forming part of head and the installation portion of afterbody, described forming part is a pre-large post-small nearly cone structure, and its front portion is a cone point is the cone of spherical crown surface.
As selection, described forming part is made up of front portion, middle part, postmedian and rear portion successively, seamlessly transits between each portion, and described middle part is cylindrical, and postmedian and rear portion are truncated cone-shaped.
As further selection, also comprise punch block, described punch block is concentric double ring structure, is connected between internal and external double-circular by the brace rod of some radial directions, and described installation portion and described inner ring Matching installation are in inner ring.
As further selection, described forming part basal diameter is equal with described outside diameter of inner ring, forming part end to endocyclic outer wall without inverse platform transition.
As further selection, described brace rod is 4, is uniformly distributed.
Workflow of the present utility model: installation portion is installed in pressure stretch machine cone by punch block or other devices, its forming part is positioned at cone middle part, and its front end extrudes towards supplied materials direction in the middle part of supplied materials.
The beneficial effects of the utility model:
1, after adding this mould, the resistance of spice in the middle part of cone can be increased, reduce the velocity of flow of spice in the middle part of cone, thus make spice in the middle part of pressure stretch machine cone and cone wall velocity of flow consistent, be conducive to spice after forming part, the density distribution of powder column is even.
2, complete primarily of forming part due to shaping, punch block is only just played a supporting role, structure greatly simplifies, brace rod quantity and gauge all greatly decline, the resistance ratios that spice is suffered in this mould thus suffered resistance in " floral disc " is relatively little, reduce drug load, be conducive to the shaping discharging of spice.
3, after adding this mould, front portion due to this mold mounting section is the sharp cone for spherical crown surface of a cone, has certain angle and head radius, can guide the flowing of spice in the middle part of pressure stretch machine cone, change the flowing stroke of spice, thus making spice velocity of flow homogeneous, spice is in flow process, and spice slowly heals, compare and add " floral disc ", it is little that spice is cut area, is conducive to spice healing, thus be conducive to the density increasing spice.
4, after adding this mould, by the impact of this mould structure, spice Contoured squeeze in the middle part of cone to surrounding, is compared " floral disc " by forming part, and spice flows the change of stroke in a mold, is conducive to the kneading of spice, thus shaping after powder column quality good.
5, after adding this mould, spice Contoured squeeze in the middle part of cone to surrounding, is compared " floral disc " by forming part, and the internal stress of spice is few, and spice not easily disperses, and is conducive to the homogeneity that spice is shaping.
Accompanying drawing explanation
Fig. 1 is the structural representation of the blind needle mould tool of the utility model embodiment;
Fig. 2 is the structural representation of the punch block of the utility model embodiment;
In figure, 1 is forming part, and 2 is installation portion, and 3 is inner ring, and 4 is outer shroud, and 11 is anterior, and 12 is middle part, and 13 is postmedian, and 14 is rear portion.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
Shown in figure 1,2, a kind of Novel tooling die improving civilian double-basis solid column density, comprise blind pin, and installation punch block, blind pin comprises the forming part 1 of head and the installation portion 2 of afterbody, forming part 1 is a pre-large post-small nearly cone structure, be made up of front portion 11, middle part 12, postmedian 13 and rear portion 14 successively, seamlessly transit between each portion, anterior 11 is the sharp cone for spherical crown surface of a cone, middle part 12 is cylindrical, and postmedian 13 and rear portion 14 are truncated cone-shaped.Punch block is concentric double ring structure, is connected between internal and external double-circular 3,4 by the brace rod 5 of some radial directions, and as shown in this embodiment, brace rod 5 is 4, is uniformly distributed, and installation portion 2 and inner ring 3 Matching installation are in inner ring 3.Forming part 1 basal diameter (i.e. rear portion 14 round platform basal diameter) is equal with inner ring 3 external diameter, forming part 1 end to inner ring 3 outer wall without inverse platform transition.
The adjustment of this mould: the front portion due to this mold mounting section is the sharp cone for spherical crown surface of a cone, it has certain angle a and head radius R, in process of production, can according to the copper sheathing of required powder column, the different angle of designing mould and different head radius, different compression ratios can be drawn, thus select suitable special construction mould.
Comparative example:
Choose the spice of same absorbent medicine batch and identical moulding process, select " floral disc " and blind pin, carry out the compacting of solid column, after compacting, measure its length, external diameter, weight.Calculate its density and visual inspection, the results are shown in Table 1.
Table 1:
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a Novel tooling die for the civilian double-basis solid column density of raising, it is characterized in that: comprise the forming part of head and the installation portion of afterbody, described forming part is a pre-large post-small nearly cone structure, and its front portion is the cone that a cone point is spherical crown surface.
2. the Novel tooling die improving civilian double-basis solid column density as claimed in claim 1, it is characterized in that: described forming part is made up of front portion, middle part, postmedian and rear portion successively, seamlessly transit between each portion, described middle part is cylindrical, and postmedian and rear portion are truncated cone-shaped.
3. the Novel tooling die improving civilian double-basis solid column density as claimed in claim 2, it is characterized in that: also comprise punch block, described punch block is concentric double ring structure, is connected between internal and external double-circular by the brace rod of some radial directions, and described installation portion and described inner ring Matching installation are in inner ring.
4. the as claimed in claim 3 Novel tooling die improving civilian double-basis solid column density, is characterized in that: described forming part basal diameter is equal with described outside diameter of inner ring, forming part end to endocyclic outer wall without against platform transition.
5. the Novel tooling die improving civilian double-basis solid column density as claimed in claim 3, is characterized in that: described brace rod is 4, is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420824449.5U CN204385093U (en) | 2014-12-23 | 2014-12-23 | Improve the Novel tooling die of civilian double-basis solid column density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420824449.5U CN204385093U (en) | 2014-12-23 | 2014-12-23 | Improve the Novel tooling die of civilian double-basis solid column density |
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| Publication Number | Publication Date |
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| CN204385093U true CN204385093U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420824449.5U Active CN204385093U (en) | 2014-12-23 | 2014-12-23 | Improve the Novel tooling die of civilian double-basis solid column density |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116924861A (en) * | 2023-07-13 | 2023-10-24 | 山西北方兴安化学工业有限公司 | Auxiliary device for pressing medicine for screw press forming die |
-
2014
- 2014-12-23 CN CN201420824449.5U patent/CN204385093U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116924861A (en) * | 2023-07-13 | 2023-10-24 | 山西北方兴安化学工业有限公司 | Auxiliary device for pressing medicine for screw press forming die |
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