CN110238994B - A mold for making a double-pulse composite material shell and an assembly method thereof - Google Patents
A mold for making a double-pulse composite material shell and an assembly method thereof Download PDFInfo
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- CN110238994B CN110238994B CN201910652735.5A CN201910652735A CN110238994B CN 110238994 B CN110238994 B CN 110238994B CN 201910652735 A CN201910652735 A CN 201910652735A CN 110238994 B CN110238994 B CN 110238994B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Forging (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
本发明公开了一种用于制作双脉冲复合材料壳体的模具及其组装方法，属于复合材料制品成型领域。本发明涉及的一种用于制作双脉冲复合材料壳体的模具，包括芯轴，前、后瓣模以及瓣模定位和锁紧装置。通过将瓣模设计为前后两个，实现了对双脉冲复合材料壳体类制品的制备；通过设计中间瓣模定位块以及芯轴上的定位台阶，达到了既锁紧前后瓣模又定位中间金属件的双重目的，解决了传统设计方法在成型双脉冲壳体中的局限性难题。另外，本发明还具有可设计性强，组装精度高，成型完毕后，拆解方便以及操作方便等优点。
The present invention discloses a mold for making a double-pulse composite material shell and an assembly method thereof, and belongs to the field of composite material product molding. The present invention relates to a mold for making a double-pulse composite material shell, comprising a core shaft, front and rear petal molds, and a petal mold positioning and locking device. By designing the petal mold as two, front and rear, the preparation of double-pulse composite material shell products is realized; by designing the middle petal mold positioning block and the positioning step on the core shaft, the dual purpose of locking the front and rear petal molds and positioning the middle metal parts is achieved, solving the limitation problems of traditional design methods in molding double-pulse shells. In addition, the present invention also has the advantages of strong designability, high assembly precision, easy disassembly after molding, and easy operation.
Description
Technical Field
The invention belongs to the field of composite material product molding, and particularly relates to a die for manufacturing a double-pulse composite material shell and an assembly method thereof.
Background
Compared with a metal shell, the fiber winding composite shell product has the advantages of light weight and high strength, and is widely applied to solid rocket engine shells at present. At present, the method for manufacturing the composite shell product mainly comprises the following steps: the water-soluble core mold material is utilized for molding, and the method is easy to demold, but the mold is a disposable lost foam, cannot be reused, is easy to cause poor consistency of product quality, and in addition, the surface finish of the mold is not high, so that air holes are easy to form on the inner surface of a molded product. Secondly, the metal or wooden type die mold is utilized for molding, the front and rear positioning blocks are used for positioning and locking the die, then the metal parts are assembled on the mandrel from the two ends respectively, the locking and positioning of the metal parts are finished by virtue of the nuts, and then the mold is assembled, the product molded by the method has good quality, no bubble is generated on the inner surface, the die can be reused, and the method is a widely used method at present, however, for the double-pulse composite material shell, because the middle metal piece is positioned at the middle position of two pulses and can be limited by space and position, the locking of the middle valve die positioning block and the front and rear assembly valve dies and the positioning of the middle metal piece and the front and rear metal pieces can not be realized by adopting the die, and the application of the die in the double-pulse composite material shell forming is limited.
Disclosure of Invention
The invention aims to provide a die for manufacturing a double-pulse composite shell and an assembly method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the split dies are arranged in a front-back mode, the locking of the middle split die positioning block and the front split die and the back split die is realized by utilizing a front split die positioning block locking nut, a back split die positioning block locking nut, steps on the mandrel and annular grooves formed between the middle split die positioning block and the mandrel, and the positioning of the middle metal piece and the front and back metal piece is realized by utilizing the mandrel and the steps on the middle split die positioning block, and a schematic diagram of the die structure is shown in fig. 2.
The invention relates to a die for manufacturing a double-pulse composite material shell, which comprises a mandrel, a valve die and a valve die positioning and locking device, and is characterized in that: the split mold comprises a front split mold and a rear split mold, and positioning bosses extending along the direction of a generatrix are arranged at the front end and the rear end of the front split mold and the rear split mold; the die positioning and locking device comprises a die positioning block, a die locking nut and a central positioning step of a mandrel; the positioning device comprises a positioning block of a front valve die, a positioning block of a middle valve die and a positioning block of a rear valve die, wherein the positioning block of the middle valve die comprises a rotating body with a central through hole and a cavity with a certain depth, the front valve die, the rear valve die and the positioning boss of the rear valve die are respectively positioned at the front edge of the front valve die, the middle of the front valve die and the rear edge of the rear valve die, the central through hole of the positioning block is in clearance fit with a mandrel, a positioning groove is formed after the positioning boss of the front valve die and the positioning boss of the rear valve die are assembled with the mandrel, and the positioning groove is inserted in a clearance fit mode; the die locking nut comprises a front die locking nut and a rear die locking nut which are respectively positioned at the front end of the front die positioning block and the rear end of the rear die positioning block; the middle positioning block of the middle valve die realizes positioning by means of a middle positioning step of the mandrel.
The invention relates to a die for manufacturing a double-pulse composite shell, which is characterized in that: the intermediate locating step of the mandrel is located at 49.8% of the length of the mandrel.
The invention relates to a die for manufacturing a double-pulse composite shell, which is characterized in that: the device also comprises a front metal piece positioning and locking device, a middle metal piece positioning and locking device and a rear metal piece positioning and locking device; a positioning step is arranged on the outer side of the middle die positioning block; the front metal piece positioning and locking device consists of a front metal piece locking nut, a front metal piece positioning block and a front positioning step of the mandrel, the middle metal piece positioning and locking device consists of a front valve die, a rear valve die and a step structure at the outer side of the middle valve die positioning block, and the rear metal piece positioning and locking device consists of a rear metal piece positioning block, a rear metal piece locking nut and a rear positioning step of the mandrel.
The invention relates to a die for manufacturing a double-pulse composite shell, which is characterized in that: the front and rear positioning steps of the mandrel are respectively positioned at 18.5% and 83.9% of the length of the mandrel.
The invention relates to an assembly method for manufacturing a double-pulse composite material shell mould, which comprises the following steps:
1) Loading the middle valve positioning block into the mandrel from the front end until the middle valve positioning block is contacted with the middle positioning step;
2) The rear end of the mandrel is vertically placed downwards, a front valve die is arranged from the upper end, and a positioning boss at the rear end of the mandrel stretches into a front positioning groove formed by the middle valve positioning block and the mandrel; then, a front valve die positioning block is arranged from the upper end, and a positioning groove formed by the front valve die positioning block and the mandrel is sleeved into a positioning boss at the front end of the front valve die, and is locked by a front valve die positioning block locking nut;
3) Then the front end of the mandrel is vertically placed downwards, a rear valve die is arranged from the upper end, and a positioning boss at the front end of the mandrel stretches into a rear positioning groove formed by the middle valve positioning block and the mandrel; and then the rear die positioning block is arranged from the upper end, and is sleeved into the positioning boss at the rear end of the rear die by the positioning groove formed by the mandrel, and is locked by the rear die positioning block locking nut, so that the double-pulse composite material shell die assembly is completed.
The invention relates to an assembly method for manufacturing a double-pulse composite material shell mould, which is characterized by comprising the following steps of: after the middle valve positioning block is installed into the mandrel, the middle metal piece is installed into the mandrel from the front end until the middle metal piece is contacted with the step structure of the middle valve positioning block; after the front valve die is locked, sequentially loading a front metal piece and a front metal piece positioning block, and locking by using a front metal piece locking nut until the front metal piece positioning block is contacted with a mandrel front positioning step; after the rear valve mold is locked, a rear metal piece and a rear metal piece positioning block are sequentially installed, and the rear metal piece positioning block is locked by a rear metal piece locking nut until the rear metal piece positioning block is contacted with a mandrel rear positioning step.
The invention relates to a die for manufacturing a double-pulse composite material shell, which realizes the preparation of double-pulse composite material shell products by designing a petal die into a front part and a rear part; the double purposes of locking the front and rear valve molds and positioning the middle metal piece are achieved by designing the middle valve mold positioning block and the positioning step on the mandrel, and the limiting problem of the traditional design method in the forming of the double-pulse shell is solved. In addition, the invention has the advantages of strong designability, high assembly precision, convenient disassembly after molding, simple operation and the like.
Drawings
FIG. 1 is a schematic illustration of a typical dual pulse composite shell structure;
FIG. 2 is a schematic diagram of a mold for making the dual pulse composite shell of FIG. 1;
FIG. 3 is a front view of the anterior valve mold;
FIG. 4 is a cross-sectional view of an anterior valve mold;
fig. 5 is an enlarged partial schematic view of the intermediate die positioning block assembled with the mandrel.
Wherein: the die comprises a core shaft, a 2-front metal piece locking nut, a 3-front metal piece positioning block, a 4-front metal piece, a 5-front valve die, a 6-middle metal piece, a 7-rear valve die, an 8-rear metal piece, a 9-rear metal piece positioning block, a 10-rear metal piece locking nut, a 11-rear valve die locking nut, a 12-rear valve die positioning block, a 13-middle valve die positioning block, a 14-front valve die positioning block, a 15-front valve die locking nut, a 16-positioning boss and a 17-positioning groove.
Detailed Description
The following describes the technical scheme related to the present invention in detail with reference to the drawings and the specific embodiments, but is not limited thereto.
Examples
A double pulse composite material shell is a hollow revolution body structure formed by composite materials and metal pieces, wherein three metal pieces are respectively a front metal piece 4, a middle metal piece 6 and a rear metal piece 8, as shown in figure 1.
The winding and forming die for manufacturing the double-pulse composite shell comprises a mandrel 1, a front metal piece locking nut 2, a front metal piece locking piece 3, a front valve die 5, a rear valve die 7, a rear metal piece locking piece 9, a rear metal piece locking nut 10, a rear valve die locking nut 11, a rear valve die locking piece 12, a middle valve die locking piece 13, a front valve die locking piece 14 and a front valve die locking nut 15, as shown in fig. 2.
The mandrel 1 is of a step-shaped revolving body structure, the total length of the mandrel is 1300mm, and a front positioning step, a middle positioning step and a rear positioning step are respectively arranged at the positions 241mm, 648mm and 1091mm away from the left end face and are respectively used for positioning the front metal piece positioning block 3, the middle valve die positioning block 13 and the rear metal piece positioning block 9.
The front lobe mould 5 is a hollow revolution body structure and consists of 12 lobes, wherein the radial section of the front lobe mould is a fan-shaped structure; the radial section of the narrow valve 6 block is of a rectangular-like structure; the two are alternately placed as shown in fig. 3. The front valve mold 5 is provided with positioning bosses 16 at two ends of each valve, and as shown in fig. 4, the positioning bosses 16 are consistent with the structures of the connected wide or narrow valve, and the shape of the inner side surface is matched with the shape of the contacted mandrel 1. The rear lobe mould 7 is also a hollow revolution body structure and consists of 8 lobes, wherein the radial section of the wide lobe 4 is a fan-shaped structure; the radial section of the narrow-lobe 4 block is of a rectangular-like structure; the two are alternately placed. The two ends of each lobe of the rear lobe mould 7 are also provided with positioning bosses 16, the positioning bosses 16 are consistent with the structures of the connected wide or narrow lobes, and the shape of the inner side surface is matched with the shape of the contacted mandrel 1.
The front die positioning block 14, the middle die positioning block 13 and the rear die positioning block 12 are of a revolving body structure with the inner side being in a ladder shape, and the inner side and the mandrel 1 are assembled in a clearance fit mode to form a positioning groove 17 which is respectively in clearance fit with positioning bosses 16 at two ends of the front die 5 and the rear die 7. The middle die positioning block 13 is positioned through a middle positioning step preset by the mandrel 1. The intermediate metal piece 6 is mounted on the outer side of the intermediate die positioning block 13, the intermediate die positioning block 13 and the intermediate die positioning block are in clearance fit, and the intermediate die positioning block 13 is provided with a step structure for positioning the intermediate metal piece 6, as shown in fig. 5.
The mold assembly is performed in the following order:
1) Firstly, the middle valve positioning block 13 is installed into the mandrel 1 from the front end until contacting with the middle positioning step; then the middle metal piece 6 is installed into the mandrel 1 from the front end until the middle metal piece is contacted with the step structure of the middle valve positioning block 13;
2) Secondly, the rear end of the mandrel 1 is vertically placed downwards, the front valve die 5 is installed from the upper end, and a positioning boss 16 at the rear end of the mandrel extends into a positioning groove 17 formed by the middle valve positioning block 13 and the mandrel 1; then, a front valve die positioning block 14 is arranged from the upper end, and a positioning groove 17 formed by the front valve die positioning block 14 and the mandrel 1 is sleeved into a positioning boss 16 at the front end of the front valve die 5 and is locked by a front valve die positioning block locking nut 15; then, loading a front metal piece 4 and a front metal piece positioning block 3 from the upper end, and locking by using a front metal piece locking nut 2 until the front metal piece positioning block 3 is contacted with a front positioning step of the mandrel 1;
3) Finally, the front end of the assembled mandrel 1 is vertically placed downwards, the rear valve die 7 is installed from the upper end, and a positioning boss 16 at the front end of the mandrel extends into a positioning groove 17 formed by the middle valve positioning block 13 and the mandrel 1; then, a rear die positioning block 12 is arranged from the upper end, and a positioning groove 17 formed by the rear die positioning block 12 and the mandrel 1 is sleeved into a positioning boss 16 at the rear end of the rear die 7 and is locked by a rear die positioning block locking nut 11; then, the rear metal piece 8 and the rear metal piece positioning block 9 are arranged from the upper end, and are locked by the rear metal piece locking nut 10 until the rear metal piece positioning block 9 contacts with the rear positioning step of the mandrel 1, so that the die assembly is completed.
Demolding after molding is carried out according to the following sequence:
1) Loosening the front metal piece positioning block locking nut 2 and the rear metal piece positioning block locking nut 10 by using a spanner, taking the front metal piece positioning block locking nut and the rear metal piece positioning block locking nut off the mandrel 1, and then taking the front metal piece positioning block 3 and the rear metal piece positioning block 9 off the mandrel 1;
2) Loosening the front die positioning block locking nut 15 and the rear die positioning block locking nut 11 by using a spanner, taking the front die positioning block locking nut and the rear die positioning block locking nut off the mandrel 1, and then taking the front die positioning block 14 and the rear die positioning block 12 off the mandrel 1;
3) Extracting the mandrel 1 from the open end of the rear metal piece 8;
4) Placing the opening end of the rear metal piece 8 downwards, taking out the narrow petals of the 6 front petal moulds 5 in the front cavity of the shell by using a flat-mouth screwdriver, and then taking out the wide petals of the 6 front petal moulds 5 in sequence to realize demoulding of the front petal moulds 5;
5) Placing the open end of the front metal piece 4 downwards, taking out the narrow petals of the 4 rear petal moulds 7 in the rear cavity of the shell by using a flat-mouth screwdriver, and then taking out the wide petals of the 4 rear petal moulds 7 in sequence to realize demoulding of the rear petal moulds 7;
6) And taking the middle die positioning block 13 out of the opening end of the rear metal piece 8 to realize complete demoulding.
Claims (4)
1. The utility model provides a mould for making double pulse combined material casing, includes dabber, lamella mould and lamella mould location and locking device, its characterized in that: the device also comprises a front metal piece positioning and locking device, a middle metal piece positioning and locking device and a rear metal piece positioning and locking device; the mandrel (1) is provided with a front positioning step, a middle positioning step and a rear positioning step; the split mould comprises a front split mould (5) and a rear split mould (7), and positioning bosses (16) extending along the direction of a generatrix are arranged at the front end and the rear end of the front split mould and the rear split mould; the die positioning and locking device comprises a die positioning block, a die locking nut and a middle positioning step of a mandrel (1); the positioning device comprises a positioning block for a valve die, and comprises a front valve die positioning block (14), a middle valve die positioning block (13) and a rear valve die positioning block (12), wherein the front valve die positioning block, the middle valve die positioning block (13) and the rear valve die positioning block are all rotators with central through holes and built-in cavities with certain depth, the middle valve die positioning block (13) comprises front and rear built-in cavities with different inner diameters and depths, the front valve die positioning block, the middle valve die positioning block and the rear valve die positioning block are respectively positioned at the front edge of a front valve die (5), the middle valve die positioning block and the rear valve die positioning block (7) and the rear edge of a rear valve die positioning block (7), the central through holes are in clearance fit with a mandrel (1), a positioning groove (17) is formed after the central through holes are assembled with the mandrel (1), and a positioning boss (16) of the front valve die positioning block (5) and the rear valve die positioning block (7) are inserted into the positioning groove (17) in a clearance fit mode; the die locking nut comprises a front die locking nut (15) and a rear die locking nut (11) which are respectively positioned at the front end of the front die positioning block (14) and the rear end of the rear die positioning block (12); the middle positioning block (13) realizes positioning by means of a middle positioning step of the mandrel (1); a positioning step is arranged on the outer side of the middle valve die positioning block (13); the front metal piece positioning and locking device consists of a front metal piece locking nut (2), a front metal piece positioning block (3) and a front positioning step of a mandrel (1), the middle metal piece positioning and locking device consists of a front valve die (5), a rear valve die (7) and a step structure on the outer side of a middle valve die positioning block (13), and the rear metal piece positioning and locking device consists of a rear metal piece positioning block (9), a rear metal piece locking nut (10) and a rear positioning step of the mandrel (1).
2. A mold for making a double pulse composite shell as defined in claim 1, wherein: the middle positioning step of the mandrel (1) is positioned at 49.8% of the length of the mandrel.
3. A mold for making a double pulse composite shell as defined in claim 1, wherein: the front positioning step and the rear positioning step of the mandrel (1) are respectively positioned at 18.5% and 83.9% of the length of the mandrel.
4. A method of assembling the mold for making a double pulse composite shell of claim 1, comprising the steps of:
1) Loading the middle valve positioning block (13) into the mandrel (1) from the front end until the middle valve positioning block is contacted with the middle positioning step;
2) After the middle valve positioning block (13) is installed in the mandrel (1), the middle metal piece (6) is installed in the mandrel (1) from the front end until the middle metal piece is contacted with the step structure of the middle valve positioning block (13); the rear end of the mandrel (1) is vertically placed downwards, a front valve die (5) is arranged from the upper end, and a positioning boss (16) at the rear end of the mandrel extends into a front positioning groove (17) formed by the middle valve positioning block (13) and the mandrel (1); then a front valve die positioning block (14) is arranged from the upper end, and a positioning groove (17) formed by the front valve die positioning block and the mandrel (1) is sleeved into a positioning boss (16) at the front end of the front valve die (5) and is locked by a front valve die positioning block locking nut (15); sequentially loading a front metal piece (4) and a front metal piece positioning block (3), and locking by using a front metal piece locking nut (2) until the front metal piece positioning block (3) is contacted with a front positioning step of the mandrel (1);
3) Then the front end of the mandrel (1) is vertically placed downwards, a rear valve die (7) is arranged from the upper end, and a positioning boss (16) at the front end of the mandrel extends into a rear positioning groove (17) formed by the middle valve positioning block (13) and the mandrel (1); then a rear die positioning block (12) is arranged from the upper end, and a positioning groove (17) formed by the rear die positioning block and the mandrel (1) is sleeved into a positioning boss (16) at the rear end of the rear die (7) and is locked by a rear die positioning block locking nut (11); sequentially loading a rear metal piece (8) and a rear metal piece positioning block (9), and locking by using a rear metal piece locking nut (10) until the rear metal piece positioning block (9) is contacted with a rear positioning step of the mandrel (1); and (5) completing the assembly of the double-pulse composite material shell mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652735.5A CN110238994B (en) | 2019-07-19 | 2019-07-19 | A mold for making a double-pulse composite material shell and an assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652735.5A CN110238994B (en) | 2019-07-19 | 2019-07-19 | A mold for making a double-pulse composite material shell and an assembly method thereof |
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| CN110238994A CN110238994A (en) | 2019-09-17 |
| CN110238994B true CN110238994B (en) | 2024-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910652735.5A Active CN110238994B (en) | 2019-07-19 | 2019-07-19 | A mold for making a double-pulse composite material shell and an assembly method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112828244B (en) * | 2021-02-25 | 2025-04-25 | 山东非金属材料研究所 | A forming die for a sand core assembly for winding a pressure vessel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762222A (en) * | 2016-11-29 | 2017-05-31 | 湖北三江航天江北机械工程有限公司 | Large-scale segmentation composite shell attachment structure and housing winding method |
| CN108453961A (en) * | 2017-12-26 | 2018-08-28 | 山东非金属材料研究所 | A mold for forming a composite material pressure vessel with metal connectors |
| CN210477502U (en) * | 2019-07-19 | 2020-05-08 | 山东非金属材料研究所 | A mold for making double-pulse composite shells |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932642A (en) * | 1995-07-24 | 1997-02-04 | Nissan Motor Co Ltd | Pressure vessel manufacturing method |
| CN106079395A (en) * | 2016-06-24 | 2016-11-09 | 精功（绍兴）复合材料有限公司 | A kind of Wrapping formed mould of cylinder |
| CN106217921B (en) * | 2016-07-25 | 2018-06-22 | 湖北三江航天江北机械工程有限公司 | Engine composite material casing integral formation method with jet pipe |
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2019
- 2019-07-19 CN CN201910652735.5A patent/CN110238994B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762222A (en) * | 2016-11-29 | 2017-05-31 | 湖北三江航天江北机械工程有限公司 | Large-scale segmentation composite shell attachment structure and housing winding method |
| CN108453961A (en) * | 2017-12-26 | 2018-08-28 | 山东非金属材料研究所 | A mold for forming a composite material pressure vessel with metal connectors |
| CN210477502U (en) * | 2019-07-19 | 2020-05-08 | 山东非金属材料研究所 | A mold for making double-pulse composite shells |
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