CN110936654A - Split type rubber mold sealing device and sealing method - Google Patents
Split type rubber mold sealing device and sealing method Download PDFInfo
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- CN110936654A CN110936654A CN201911231746.2A CN201911231746A CN110936654A CN 110936654 A CN110936654 A CN 110936654A CN 201911231746 A CN201911231746 A CN 201911231746A CN 110936654 A CN110936654 A CN 110936654A
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- mold
- rubber
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- rubber mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/022—Moulds for compacting material in powder, granular of pasta form
- B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts
Abstract
The invention discloses a split type rubber mold sealing device and a sealing method. The invention realizes the high-efficiency and reliable sealing of the rubber mold, is particularly suitable for filling the rubber mold with isostatic pressing complex-configuration multi-component energetic materials with poor fluidity and the charging operation which can influence the characters of the energetic materials for certain high-temperature curing and bonding, can realize the recycling of the rubber in the life cycle, obviously reduces the isostatic pressing production cost and simplifies the operation steps.
Description
Technical Field
The invention relates to the technical field of split type rubber molds and sealing methods, in particular to a split type rubber mold sealing device and a split type rubber mold sealing method.
Background
Isostatic compaction is an important special powder forming method, the basic principle is that uniform static pressure is applied to energetic materials filled into a rubber mold in all directions so as to obtain a high-density blank, and the formed compact has the unique advantages of uniform density distribution, high strength, near-net shape and the like. Generally, in order to facilitate the filling of the rubber mold with the energetic material, the larger the size of the mold feed opening is, the more efficient the charging operation is theoretically. However, the vacuum seal of the subsequent process requires that the feed inlet of the die is as small as possible, so that the risk of vacuum seal failure is effectively reduced, and the feasibility and effectiveness of the vacuum seal are ensured. Generally, a rubber mold for isostatic pressing needs to satisfy both the charging and vacuum sealing requirements.
For the large-size pressed blank formed by isostatic pressing, the energy-containing material is low in efficiency of filling the rubber mold due to the large consumption of the powder raw material and the narrow feed inlet of the mold (as shown in figure 1), and the operation process is time-consuming and labor-consuming. In particular, for some powder materials with poor flowability, the narrow feeding hole seriously restricts the smooth feeding operation. In addition, for the rubber mold with the structure, the size of the pressed blank after isostatic pressing is far larger than that of a vacuum sealing part, and in order to obtain a molded blank product, the mold stripping operation inevitably carries out destructive disassembly on the rubber mold. Because the rubber mold is difficult to reuse, the production cost of the molded blank is increased invisibly, and the further popularization and application of the isostatic pressing technology are restricted to a certain extent.
In summary, the invention needs to provide a rubber mold device and a sealing method which are convenient and fast to charge, reliable in sealing and recyclable, remarkably improve the charging operation efficiency, reduce the isostatic pressing production cost, and further widen the application field of the isostatic pressing technology.
Disclosure of Invention
In order to solve the above problems, the present invention provides a split sealing device and a sealing method for a rubber mold, which reserve deformation shrinkage near the sealing position of the mold in order to satisfy the isotropic stress of the rubber mold during the isostatic pressing process, and aims to eliminate the influence of the sealing form of the mold on the overall dimension of the molded compact, thereby obtaining a compact product with a regular shape, as shown in fig. 2. Wherein, FIG. 3 shows the shrinkage comparison of the energetic material before and after compression molding, the reserved shrinkage of the rubber is X, and the specific dimension is that B is more than or equal to X is less than or equal to A.
The invention realizes the purpose through the following technical scheme:
a split type rubber mold sealing device comprises a rubber mold upper mold, a rubber mold lower mold, a profiling shaping cover, an annular sealing ring and an annular clamp.
Further proposal is that deformation contraction quantity parts are reserved near the sealing position of the upper die and the lower die of the rubber die,
the further proposal is that the deformation shrinkage part is arranged in a concave center, and the end part of the deformation shrinkage part is sealed by an annular sealing ring and an annular hoop.
The invention also provides a sealing method of the split rubber mold sealing device, which comprises the following steps:
A. placing a lower die of the rubber die in a profiling shaping cover with a supporting function to ensure that the lower die and the profiling shaping cover are attached smoothly;
B. filling an energetic material into a mold cavity, and enabling a material surface to be flush with a support surface of the profiling shaping cover;
C. assembling an upper rubber mould and a lower rubber mould mutually and enabling the parts of the upper rubber mould and the lower rubber mould which are reserved with deformation shrinkage in the circumferential direction to be tightly attached to each other;
D. placing the annular sealing ring and the annular clamp at the concave center of the deformation shrinkage part at the edge of the mold, and simultaneously, tightly sealing the upper mold and the lower mold of the rubber mold on the annular sealing ring by using the annular clamp;
E. and vacuumizing and sealing the vacuum sealing part.
After the compression molding and demolding, the rubber mold is simply cleaned and can be repeatedly recycled.
The invention has the beneficial effects that:
the split type rubber mold sealing device and the sealing method provided by the invention realize efficient and reliable sealing of the rubber mold, are particularly suitable for filling the rubber mold with isostatic pressing complex-configuration multi-component energetic materials with poor fluidity and for charging operation of certain high-temperature curing bonding which can influence the characters of the energetic materials, can realize recycling of rubber in a life cycle, obviously reduce the isostatic pressing production cost and simplify the operation steps.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the embodiments or the drawings needed to be practical in the prior art description, and obviously, the drawings in the following description are only some embodiments of the embodiments, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a prior art charging mould.
Fig. 2 shows a sealing rubber mold of the present invention.
Figure 3 comparison of shrinkage before and after compression molding of energetic material.
Fig. 4 is a split type rubber mold sealing device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In any embodiment, as shown in fig. 1, the split rubber mold sealing device of the present invention comprises an upper rubber mold 1, a lower rubber mold 2, a profiling cover 3, an annular sealing ring 31 and an annular clamp 32.
Further, a deformation shrinkage part 11 is reserved near the sealing position of the upper rubber mold 1 and the lower rubber mold 2.
Further, the deformation shrinkage part 11 is arranged in a concave manner, and the end part of the deformation shrinkage part is sealed by an annular sealing ring 31 and an annular clamping hoop 32.
The invention also provides a sealing method of the split rubber mold sealing device, which comprises the following steps:
A. placing a lower die 2 of the rubber die in a profiling shaping cover 3 with a supporting function to ensure that the lower die and the profiling shaping cover are attached smoothly;
B. filling an energetic material into a mold cavity, and enabling the material surface to be flush with the supporting surface of the profiling shaping cover 3;
C. assembling an upper rubber mould 1 and a lower rubber mould 2 mutually, and enabling the reserved deformation shrinkage parts 11 in the circumferential direction of the upper rubber mould and the lower rubber mould to be tightly attached to each other;
D. the annular sealing ring 31 and the annular clamp 32 are arranged at the concave center of the deformation shrinkage part 11 at the edge of the mold, and the upper mold 1 and the lower mold 2 of the rubber mold are clamped and tightly sealed on the annular sealing ring 31 by the annular clamp 32;
E. and vacuumizing and sealing the vacuum sealing part.
In a specific embodiment, millet is used as an experimental object, a verification experiment is carried out under the process conditions of 150MPa, 80 ℃ and 2h of pressure maintaining, and the vacuum sealing of the mold is reliable and effective. As a result, no leakage occurred in the surface mold, and the appearance of the product was good. Meanwhile, the rubber mold has no plastic deformation, damage and the like, and can be repeatedly used within the service life.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition. In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (4)
1. The utility model provides a split type rubber mold sealing device which characterized in that, includes rubber mold upper die (1), rubber mold lower mould (2), profile modeling cover (3), annular sealing ring (31) and annular clamp (32).
2. The split type rubber mold sealing device according to claim 1, wherein a deformation shrinkage portion (11) is reserved near a sealing position of the upper rubber mold (1) and the lower rubber mold (2).
3. The split rubber mold sealing device according to claim 2, wherein the deformation contraction amount portion (11) is formed in a concave shape, and the end portion thereof is sealed by an annular seal ring (31) and an annular clamp (32).
4. The sealing method of the split rubber mold sealing device according to any one of claims 1 to 3, comprising the steps of:
A. placing the lower die (2) of the rubber die in a profiling shaping cover (3) with a supporting function to ensure that the lower die and the profiling shaping cover are attached smoothly;
B. filling an energetic material into a die cavity, and enabling the material surface to be flush with the supporting surface of the profiling shaping cover (3);
C. assembling an upper rubber mould (1) and a lower rubber mould (2) mutually, and enabling the parts (11) with reserved deformation shrinkage in the circumferential direction of the upper rubber mould and the lower rubber mould to be tightly attached to each other;
D. placing an annular sealing ring (31) and an annular hoop (32) at the concave center of a deformation shrinkage part (11) at the edge of the mold, and simultaneously adopting the annular hoop (32) to hoop and tightly seal an upper mold (1) and a lower mold (2) of the rubber mold on the annular sealing ring (31);
E. and vacuumizing and sealing the vacuum sealing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231746.2A CN110936654A (en) | 2019-12-04 | 2019-12-04 | Split type rubber mold sealing device and sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231746.2A CN110936654A (en) | 2019-12-04 | 2019-12-04 | Split type rubber mold sealing device and sealing method |
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| Publication Number | Publication Date |
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| CN110936654A true CN110936654A (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911231746.2A Pending CN110936654A (en) | 2019-12-04 | 2019-12-04 | Split type rubber mold sealing device and sealing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112809992A (en) * | 2020-12-24 | 2021-05-18 | 中国航空制造技术研究院 | Split-combined die for composite material thermal forming |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0924497A (en) * | 1995-07-10 | 1997-01-28 | Mitsubishi Materials Corp | Rubber press mold |
| CN2433079Y (en) * | 2000-06-29 | 2001-06-06 | 西安双佳高压电瓷电器有限公司 | Isostatic forming hollow blank elastic die cover |
| CN204276909U (en) * | 2014-12-03 | 2015-04-22 | 株洲硬质合金集团有限公司 | A kind of super large tungsten crucible production assembling die |
| CN106142641A (en) * | 2016-07-12 | 2016-11-23 | 董中天 | Isostatic pressed bag film is unstressed mould |
| CN205732969U (en) * | 2016-05-18 | 2016-11-30 | 金堆城钼业股份有限公司 | A kind of sealing device of isostatic cool pressing super large-scale slab glued membrane |
| CN206968044U (en) * | 2017-07-18 | 2018-02-06 | 中国工程物理研究院化工材料研究所 | For isostatic pressing process flexible die charging aperture instant sealing device |
| CN207386557U (en) * | 2017-10-30 | 2018-05-22 | 湖南有色新材料科技有限公司 | A kind of new isostatic tooling of molybdenum target material production |
-
2019
- 2019-12-04 CN CN201911231746.2A patent/CN110936654A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0924497A (en) * | 1995-07-10 | 1997-01-28 | Mitsubishi Materials Corp | Rubber press mold |
| CN2433079Y (en) * | 2000-06-29 | 2001-06-06 | 西安双佳高压电瓷电器有限公司 | Isostatic forming hollow blank elastic die cover |
| CN204276909U (en) * | 2014-12-03 | 2015-04-22 | 株洲硬质合金集团有限公司 | A kind of super large tungsten crucible production assembling die |
| CN205732969U (en) * | 2016-05-18 | 2016-11-30 | 金堆城钼业股份有限公司 | A kind of sealing device of isostatic cool pressing super large-scale slab glued membrane |
| CN106142641A (en) * | 2016-07-12 | 2016-11-23 | 董中天 | Isostatic pressed bag film is unstressed mould |
| CN206968044U (en) * | 2017-07-18 | 2018-02-06 | 中国工程物理研究院化工材料研究所 | For isostatic pressing process flexible die charging aperture instant sealing device |
| CN207386557U (en) * | 2017-10-30 | 2018-05-22 | 湖南有色新材料科技有限公司 | A kind of new isostatic tooling of molybdenum target material production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112809992A (en) * | 2020-12-24 | 2021-05-18 | 中国航空制造技术研究院 | Split-combined die for composite material thermal forming |
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Application publication date: 20200331 |