CN114407373B - Flexible joint forming tool - Google Patents
Flexible joint forming tool Download PDFInfo
- Publication number
- CN114407373B CN114407373B CN202111435611.5A CN202111435611A CN114407373B CN 114407373 B CN114407373 B CN 114407373B CN 202111435611 A CN202111435611 A CN 202111435611A CN 114407373 B CN114407373 B CN 114407373B
- Authority
- CN
- China
- Prior art keywords
- flexible joint
- die
- upper cover
- bottom plate
- plate
- 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
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
- B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
- B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
Abstract
The invention discloses a flexible joint forming tool, which relates to the technical field of flexible joint processing equipment and comprises an external frame and a forming device, wherein the external frame comprises a bottom plate, a hydraulic oil top, a supporting plate and an upper cover which are sequentially arranged from bottom to top, the bottom plate and the upper cover are connected through a plurality of limiting columns, the forming device is arranged between the supporting plate and the upper cover, the forming device comprises a top die, a bottom die and a heating sleeve, a forming cavity is formed among the bottom die, the heating sleeve and the top die, and the forming cavity is used for placing a flexible joint. Through the arrangement of the invention, the flexible joint forming tool is simple in structure and convenient to detach and assemble; the invention provides the molding pressure of rubber by utilizing a hydraulic jack mode, and adopts a mode of wrapping an electric heating sleeve outside a shell, so that the shell of the steel structure of the product, the inner extension tube and the rubber elastomer are vulcanized together.
Description
Technical Field
The invention relates to the technical field of flexible joint processing equipment, in particular to a flexible joint forming tool.
Background
The flexible jet pipe has extremely wide application prospect, and the strong deflection capability makes the flexible jet pipe especially suitable for various solid rocket engines with higher requirements on maneuverability and overload capability, and the missile based on the flexible jet pipe is not only expected to be applied to large strategic missiles, but also has great application prospect in the tactical missiles fields such as small air defense and reverse guidance, carrier-borne, submarine-launched and the like.
The flexible joint is a non-rigid pressure-bearing sealing connecting piece, which is a complete piece composed of a plurality of concentric annular sphere elastic pieces (rubber) and reinforcing pieces (steel or composite material) which are alternately bonded together, and flanges are respectively arranged at the front and the rear. The flexible joint has very high axial compression rigidity and very low bending rigidity, so that when the flexible joint is subjected to very high combustion chamber pressure, only very small axial displacement is generated, and under the action of small lateral acting force, larger shearing deformation can be generated, so that the spray pipe swings, and thrust vector control is realized.
The flexible joint is formed by overlapping the reinforcing piece and the elastic piece, the parallelism of the upper end face and the lower end face of the flexible joint is required to be not more than 0.06mm after the flexible joint is assembled, the coaxiality is required to be not more than 0.06mm, the manufacturing uniformity of the elastic pieces of each layer is ensured while the precision of the reinforcing piece is ensured, otherwise, the stress distribution inside the flexible joint is deteriorated, the control precision is affected, and the missile cannot hit the target accurately. The structure of the existing flexible joint forming tool is complex, errors are easy to generate in the processing process, and therefore the structure of the simplified flexible joint forming tool is a problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a flexible joint forming tool.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a flexible joint shaping frock, includes, external frame and forming device, external frame includes bottom plate, hydraulic oil top, backup pad and the upper cover that sets gradually from bottom to top, bottom plate and upper cover are connected through a plurality of spacing posts, be provided with forming device between backup pad and the upper cover, forming device includes top mould, die block and heating jacket, form the shaping chamber between die block, heating jacket and the top mould, the shaping chamber is used for placing flexible joint.
Further, the limit post is a screw rod, the limit post is in threaded connection with the bottom plate, a through hole matched with the limit post is formed in the upper cover, and the limit post penetrates through the through hole and is in threaded connection with the nut.
Further, the limiting columns are arranged on the bottom plate in an annular array with the forming device as the center.
Further, the hydraulic oil top is a plurality of, evenly distributed in on the bottom plate, hydraulic oil top bottom fixed connection in the up end of bottom plate, a plurality of hydraulic oil top forms the plane for place the backup pad.
Further, a heat insulation plate is arranged between the support plate and the forming device, and a bottom die is arranged on the upper end face of the heat insulation plate.
Further, the heat insulation board is internally provided with a heat insulation material, and the heat insulation material comprises one or more of asbestos, rock wool, silicate, phenolic resin and fiber cloth.
Further, an internal heating component is arranged at the middle position of the bottom die and is matched with the inner diameter of the flexible joint, and the internal heating component is used for extending into the flexible joint.
Still further, the flexible joint includes, pipe fitting, rubber elastomer and shell, the pipe fitting runs through upper cover and cope match-die to extend to the shaping intracavity, the one end cover that the pipe fitting extends to the shaping chamber is equipped with rubber elastomer, rubber elastomer overcoat is equipped with the shell, the shell outer wall with the heating jacket inner wall laminating mutually.
Compared with the prior art, the invention has the beneficial effects that:
through the arrangement of the invention, the flexible joint forming tool is simple in structure and convenient to detach and assemble; the invention provides the molding pressure of rubber by utilizing a hydraulic jack (oil jack) mode, and adopts a mode of wrapping an electric heating sleeve outside a shell, so that the shell and an inner extension tube of a steel structure of the product and a rubber elastomer are vulcanized together.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
FIG. 1 is a cross-sectional view of a flexible joint forming tool;
FIG. 2 is a schematic diagram of the overall structure of a flexible joint forming tool;
fig. 3 is a schematic diagram of the internal structure of the flexible joint forming tool.
In the figure: 1. a limit rod; 2. an upper cover; 3. a top mold; 4. an internal heating assembly; 5. a top plate; 6. a bottom die; 7. a heat insulating plate; 8. a support plate; 9. a hydraulic oil top; 10. a bottom plate; 11. a pipe fitting; 12. a rubber elastic body; 13. a housing; 14. and (5) heating the sleeve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-3, a flexible joint forming tool includes an outer frame and a forming device;
the outer frame comprises a bottom plate 10, a hydraulic oil top 9, a supporting plate 8 and an upper cover 2 which are sequentially arranged from bottom to top, wherein the bottom plate 10 is disc-shaped, the bottom of the bottom plate is provided with an annular support, and the top of the bottom plate is of a plane structure and is used for installing the hydraulic oil top 9;
screw holes are formed in the position, close to the edge, of the bottom plate 10 and are used for being matched with external threads on the limiting columns, and preferably, six to twelve screw holes are formed in the screw holes and are distributed on the bottom plate 10 in an annular array;
the hydraulic oil tops 9 are uniformly distributed on the bottom plate 10, the bottoms of the hydraulic oil tops 9 are fixedly connected to the upper end face of the bottom plate 10, planes are formed at the tops of the hydraulic oil tops 9 and used for placing the supporting plate 8, and preferably, the four hydraulic oil tops 9 are arranged on the bottom plate 10 in an annular array;
the supporting plate 8 is of a cylindrical structure, the side wall of the supporting plate 8 is propped against the limiting columns, the supporting positions are limited through the plurality of limiting columns, the position of the supporting plate 8 is prevented from being deviated in the ascending process, the bottom plate 10 and the upper cover 2 are connected through the limiting columns, the space between the supporting plate 8 and the upper cover 2 is used for placing a forming device, the limiting columns are screw rods, the limiting columns are in threaded connection with the bottom plate 10, through holes matched with the limiting columns are formed in the upper cover 2, the limiting columns penetrate through the through holes and are in threaded connection with nuts placed on the upper end face of the upper cover 2, the limiting columns are convenient to install and detach through the arranged through holes and nuts, and the distance between the upper cover 2 and the bottom plate 10 is limited;
a thermal insulation plate 7 is arranged between the supporting plate 8 and the forming device, a bottom die 6 is arranged on the upper end surface of the thermal insulation plate 7, the bottom die 6 is of a multi-step structure, the bottom is of a flange structure and is used for supporting a shell 13, the upper part is of a cylindrical structure, the upper end surface of the cylindrical structure is matched with (attached to) the lower end surface of the rubber elastic body 12, a top plate 5 is arranged at the middle position of the upper part, and a hole is formed in the middle of the top plate 5 and is used for placing an internal heating component; the heat insulation plate 7 is internally provided with heat insulation materials, wherein the heat insulation materials comprise one or more of asbestos, rock wool, silicate, phenolic resin and fiber cloth;
the flexible joint comprises a pipe fitting 11, a rubber elastic body 12 and a shell 13, wherein the lower end of the pipe fitting 11 is of a hemispherical structure, a hemispherical cavity is formed in the pipe fitting, the hemispherical structure at the lower end of the pipe fitting 11 penetrates through the upper cover 2 and the top die 3 and extends into a forming cavity, the rubber elastic body 12 is sleeved at one end of the pipe fitting 11 extending into the forming cavity, the shell 13 is sleeved outside the rubber elastic body 12, and the outer wall of the shell 13 is attached to the inner wall of the heating sleeve 14.
The forming device comprises a top die 3, a bottom die 6 and a heating sleeve 14, a forming cavity is formed among the bottom die 6, the heating sleeve 14 and the top die 3, the forming cavity is used for placing the lower end of a pipe fitting 11 in a flexible joint, a rubber elastomer 12 and a shell 13, the outer wall of the shell 13 is matched with the inner wall of the heating sleeve 14 (is attached to the outer wall of the shell), the shell 13 is of a steel structure, the heating sleeve 14 is arranged to be matched with the shell 13, the shell 13 can be uniformly heated, and when heating is carried out, heat generated by the heating sleeve 14 is transferred to the rubber elastomer 12 through the shell 13 of the steel structure, so that the pipe fitting 11, the rubber elastomer 12 and the shell 13 form an integral structure;
the middle position of the bottom die 6 is provided with an internal heating component 4, the internal heating component 4 is matched with the inner diameter of the pipe fitting 11 in the flexible joint, the internal heating component 4 extends into the pipe fitting 11 when in use, heat is transferred to the rubber elastic body 12, the softening speed of the rubber elastic body 12 is improved through the combined action of the internal heating component 4 and the heating sleeve 14, in other embodiments, the internal heating component 4 can be an oil pipe, and a heating wire is arranged in the oil pipe and is filled with oil.
The working principle and the using flow of the invention are as follows:
when the device is used, firstly, a bottom plate 10 is arranged, after the bottom plate 10 is arranged, a hydraulic oil top 9 is installed on the upper end face of the bottom plate, a supporting plate 8 is placed on the top surface of the hydraulic oil top 9, wherein the supporting plate 8 can be directly placed on the hydraulic oil top 9, and also can be fixedly connected to the hydraulic oil top 9 through bolts, after the supporting plate 8 is placed, a heat insulation plate 7 and a bottom die 6 are placed, then a pipe fitting 11, a rubber elastomer 12, a shell 13 and a heating sleeve 14 are placed in sequence, and in the process, an internal heating component 4 (an oil pipe) at the middle position of the top die 3 positions the pipe fitting 11; finally, the top die 3 and the upper cover 2 are placed, and the limiting rod 1 is installed to fix and position the whole structure, so that the pipe fitting 11, the rubber elastic body 12 and the outer shell 13 are tightly attached together, after the structure is installed, the heating sleeve and the internal heating assembly are started, and the outer shell of the steel structure, the internal extension pipe and the rubber elastic body are vulcanized together.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The flexible joint forming tool is characterized by comprising an outer frame and a forming device, wherein the outer frame comprises a bottom plate, a hydraulic oil top, a supporting plate and an upper cover which are sequentially arranged from bottom to top, the bottom plate and the upper cover are connected through a plurality of limiting columns, the forming device is arranged between the supporting plate and the upper cover and comprises a top die, a bottom die and a heating sleeve, a forming cavity is formed between the bottom die, the heating sleeve and the top die, the forming cavity is used for placing a flexible joint, and a heat insulation plate is arranged between the supporting plate and the bottom die; an internal heating component is arranged at the middle position of the bottom die, and is matched with the inner diameter of the flexible joint and used for extending into the flexible joint;
the flexible joint comprises a pipe fitting, a rubber elastomer and a shell, wherein the pipe fitting penetrates through the upper cover and the top die and extends into a forming cavity, the rubber elastomer is sleeved at one end of the pipe fitting extending to the forming cavity, the shell is sleeved outside the rubber elastomer, and the outer wall of the shell is attached to the inner wall of the heating sleeve.
2. The flexible joint forming tool according to claim 1, wherein the limiting column is a screw rod, the limiting column is in threaded connection with the bottom plate, a through hole matched with the limiting column is formed in the upper cover, and the limiting column penetrates through the through hole and is in threaded connection with the nut.
3. The flexible joint forming tool according to claim 1, wherein the limiting columns are arranged on the bottom plate in an annular array with the forming device as a center.
4. The flexible joint forming tool according to claim 1, wherein the hydraulic oil tops are uniformly distributed on the bottom plate, the bottom of the hydraulic oil tops is fixedly connected to the upper end face of the bottom plate, and the top of the hydraulic oil tops form a plane for placing the supporting plate.
5. The flexible joint forming tool according to claim 1, wherein a heat insulating material is arranged inside the heat insulating plate, and the heat insulating material comprises one or more of asbestos, rock wool, silicate, phenolic resin and fiber cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111435611.5A CN114407373B (en) | 2021-11-29 | 2021-11-29 | Flexible joint forming tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111435611.5A CN114407373B (en) | 2021-11-29 | 2021-11-29 | Flexible joint forming tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114407373A CN114407373A (en) | 2022-04-29 |
| CN114407373B true CN114407373B (en) | 2023-09-01 |
Family
ID=81266420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111435611.5A Active CN114407373B (en) | 2021-11-29 | 2021-11-29 | Flexible joint forming tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114407373B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB527406A (en) * | 1939-04-11 | 1940-10-08 | Arthur Edward Peel Milner | Improvements in and relating to appliances for moulding balls and similar hollow rubber articles |
| GB952739A (en) * | 1959-08-29 | 1964-03-18 | Dunlop Rubber Co | Improvements relating to flexible couplings for pipes |
| GB952738A (en) * | 1959-08-29 | 1964-03-18 | Dunlop Rubber Co | Improvements relating to flexible couplings for pipes |
| GB1016060A (en) * | 1963-10-09 | 1966-01-05 | Metalastik Ltd | Improvements in or relating to the manufacture of flexible joints or bearings |
| FR2339125A1 (en) * | 1976-01-20 | 1977-08-19 | Tubest Sa | Flexible knuckle joint for vehicle exhaust pipes - is made by pressing two pipes into shape one inside other |
| US4708758A (en) * | 1986-09-25 | 1987-11-24 | Morton Thiokol, Inc. | Method of making a flexible bearing |
| RU2118732C1 (en) * | 1996-11-26 | 1998-09-10 | Открытое акционерное общество Научно-производственное объединение "Искра" | Method of manufacture of movable joint |
| JPH11325358A (en) * | 1998-05-11 | 1999-11-26 | Toyo Tire & Rubber Co Ltd | Flexible joint and manufacture thereof |
| CN202702630U (en) * | 2012-06-14 | 2013-01-30 | 湖北三江航天江北机械工程有限公司 | Hot bonding forming device for flexible joint of swing spray pipe |
| CN102918289A (en) * | 2010-05-28 | 2013-02-06 | 卡特彼勒公司 | Seal assembly and method for forming a seal assembly |
| CN104552802A (en) * | 2015-01-29 | 2015-04-29 | 北京航空航天大学 | Flexible joint manufacturing mould device |
| CN106903901A (en) * | 2017-01-23 | 2017-06-30 | 湖北三江航天江北机械工程有限公司 | For the Low temperature-resistanflexible flexible joint forming method of solid propellant rocket |
| CN112339211A (en) * | 2020-11-10 | 2021-02-09 | 湖北三江航天江北机械工程有限公司 | Flexible joint forming method |
| CN216267690U (en) * | 2021-11-29 | 2022-04-12 | 中国海洋石油集团有限公司 | Flexible joint forming tool |
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| US7341283B2 (en) * | 2004-01-29 | 2008-03-11 | Oil States Industries, Inc. | High temperature flexible pipe joint |
| US8038177B2 (en) * | 2008-02-25 | 2011-10-18 | Oil States Industries, Inc. | Pressure isolation system for flexible pipe joints |
| US8016324B2 (en) * | 2008-02-25 | 2011-09-13 | Oil States Industries, Inc. | Two-element tandem flexible joint |
| WO2016028792A1 (en) * | 2014-08-20 | 2016-02-25 | Lord Corporation | Flexible joint and method of manufacturing flexible joint |
| PT3303897T (en) * | 2015-05-29 | 2019-05-23 | Oil States Ind Inc | Flexible pipe joint having an annular flexible boot thermally or chemically insulating an annular elastomeric flexible element |
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2021
- 2021-11-29 CN CN202111435611.5A patent/CN114407373B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB527406A (en) * | 1939-04-11 | 1940-10-08 | Arthur Edward Peel Milner | Improvements in and relating to appliances for moulding balls and similar hollow rubber articles |
| GB952739A (en) * | 1959-08-29 | 1964-03-18 | Dunlop Rubber Co | Improvements relating to flexible couplings for pipes |
| GB952738A (en) * | 1959-08-29 | 1964-03-18 | Dunlop Rubber Co | Improvements relating to flexible couplings for pipes |
| GB1016060A (en) * | 1963-10-09 | 1966-01-05 | Metalastik Ltd | Improvements in or relating to the manufacture of flexible joints or bearings |
| FR2339125A1 (en) * | 1976-01-20 | 1977-08-19 | Tubest Sa | Flexible knuckle joint for vehicle exhaust pipes - is made by pressing two pipes into shape one inside other |
| US4708758A (en) * | 1986-09-25 | 1987-11-24 | Morton Thiokol, Inc. | Method of making a flexible bearing |
| RU2118732C1 (en) * | 1996-11-26 | 1998-09-10 | Открытое акционерное общество Научно-производственное объединение "Искра" | Method of manufacture of movable joint |
| JPH11325358A (en) * | 1998-05-11 | 1999-11-26 | Toyo Tire & Rubber Co Ltd | Flexible joint and manufacture thereof |
| CN102918289A (en) * | 2010-05-28 | 2013-02-06 | 卡特彼勒公司 | Seal assembly and method for forming a seal assembly |
| CN202702630U (en) * | 2012-06-14 | 2013-01-30 | 湖北三江航天江北机械工程有限公司 | Hot bonding forming device for flexible joint of swing spray pipe |
| CN104552802A (en) * | 2015-01-29 | 2015-04-29 | 北京航空航天大学 | Flexible joint manufacturing mould device |
| CN106903901A (en) * | 2017-01-23 | 2017-06-30 | 湖北三江航天江北机械工程有限公司 | For the Low temperature-resistanflexible flexible joint forming method of solid propellant rocket |
| CN112339211A (en) * | 2020-11-10 | 2021-02-09 | 湖北三江航天江北机械工程有限公司 | Flexible joint forming method |
| CN216267690U (en) * | 2021-11-29 | 2022-04-12 | 中国海洋石油集团有限公司 | Flexible joint forming tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114407373A (en) | 2022-04-29 |
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